阅读说明：本技术 一种便于扩展空间的宣传装置及其使用方法 (Propaganda device convenient for space expansion and use method thereof ) 是由 李明 杨菲 闫小斌 于 2021-08-24 设计创作，主要内容包括：本申请涉及一种便于扩展空间的宣传装置,包括主支撑座,所述主支撑座的侧端面上套设有副支撑座,所述副支撑座背离主支撑座的一侧面上套设有侧肋夹持组件,综上所述,通过设置的重心调控组件、联动组件、弧度调控组件以及限定组件等结构的互相配合下,即使在偏离中心的角度观看,效果也不错,曲面展示面板的弧度可以保证眼睛的距离均等,从而曲面展示面板能够带来更好的感官体验,还增大了学习人员的视野,避免因展示面积的增大而影响观看,而配重块的前移,用于调控整个设备的重心位置,有效保证了整个展示设备的稳定性,还实现了扩展教育宣传纸的单面展示面积,灵活度高,方面使用,便于根据需要提供适宜的展示面。(The application relates to a propaganda device convenient for space expansion, which comprises a main support seat, wherein an auxiliary support seat is sleeved on the side end face of the main support seat, a side rib clamping component is sleeved on a side face of the auxiliary support seat, which deviates from the main support seat, and the effects are good even if the propaganda device is watched at an angle deviating from the center under the mutual matching of structures such as a gravity center regulating component, a linkage component, a radian regulating component and a limiting component, the radian of a curved surface display panel can ensure the equal distance between eyes, so that the curved surface display panel can bring better sensory experience, the visual field of a learner is increased, the influence on watching due to the increase of the display area is avoided, the forward movement of a balancing weight is used for regulating and controlling the gravity center position of the whole equipment, the stability of the whole display equipment is effectively ensured, and the single-face display area of the education propaganda paper is also realized, the flexibility is high, and the convenient use is convenient for provide suitable show face as required.)

1. The utility model provides a propaganda device convenient to expand space, includes main tributary supporting seat (1), a serial communication port, be equipped with on the side of main tributary supporting seat (1) with vice supporting seat (2), be equipped with side rib centre gripping subassembly (3) on the side that vice supporting seat (2) deviate from main tributary supporting seat (1), be equipped with two bridge type coupling assembling (5) that are used for expanding space and supporting role on the rear side end face of side rib centre gripping subassembly (3), and the opposite face of two bridge type coupling assembling (5) is equipped with a plurality of spliced pole (6), be equipped with radian regulation and control subassembly (7) between spliced pole (6) and main tributary supporting seat (1), the below of bridge type coupling assembling (5) is equipped with focus regulation and control subassembly (9) to inside being equipped with of focus regulation and control subassembly (9) is used for regulating and controlling visual angle and focus linkage subassembly (12), focus regulation and control subassembly (9), Be equipped with same drive assembly (8) that are used for playing the regulation and control effect between bridge type coupling assembling (5) and radian regulation and control subassembly (7), the surface of drive assembly (8) is equipped with locating component (13) that have the function of shifting gears in the location.

2. The advertising device convenient for space expansion according to claim 1, wherein the main supporting seat (1) and the auxiliary supporting seat (2) are respectively clamped with a limiting component (4) for ensuring the stability of the promotional paper, the limiting component (4) comprises a passing connecting cylinder (401), three passing connecting cylinders (401) are clamped at the top of the main supporting seat (1) or two auxiliary supporting seats (2), the port at the top of the passing connecting cylinder (401) is hinged with the outer arc surface of the first outer connecting sleeve (402) through a pin shaft (403), the first outer connecting sleeve (402) is internally sleeved with a first inner telescopic frame (404), one end of the first inner telescopic frame (404) is fixedly connected with the end surface at the inner side of the first outer connecting sleeve (402) through a first supporting spring (405), the other end of the first inner telescopic frame (404) is fixedly connected with a first limiting wheel (406), the end part of the first outer connecting sleeve (402) is fixedly connected with a hemisphere (407), a lifting seat (408) is slidably connected with the position corresponding to the hemisphere (407) in the passing connecting cylinder (401), the bottom of the lifting seat (408) is fixedly connected with a first insection panel (409), one side, far away from the first outer connecting sleeve (402), of the lifting seat (408) is fixedly connected with a first sliding connecting seat (410), the first sliding connecting seat (410) is slidably connected in the first sliding connecting groove (411), a third supporting spring (412) is arranged between the first sliding connecting groove (411) and the first sliding connecting seat (410), two ends of the third supporting spring (412) are respectively fixedly connected with the bottom end of the first sliding connecting seat (410) and the inner wall of the first sliding connecting groove (411), and a fourth connecting groove (420) is meshed with the bottom of the first insection panel (409), the bottom of fourth linkage gear (420) meshes and has first linkage gear (413), the fixed interlude in middle part of fourth linkage gear (420) and first linkage gear (413) is equipped with second adapter cylinder (419), first linkage gear (413) and fourth linkage gear (420) are fixed respectively on the surface of two second adapter cylinders (419), the tip cover of second adapter cylinder (419) has second bearing (414), second bearing (414) joint is on the medial surface of passing connecting cylinder (401), first linkage gear (413) is kept away from on the one side of first insection panel (409) fixedly connected with second outer adapter sleeve (415), the inside wall of second outer adapter sleeve (415) passes through second supporting spring (417) and second inner telescopic bracket (416) and second limiting wheel (418) fixed connection, three second limiting wheel (418) and three first limiting wheel (406) roll connection are in main tributary supporting seat (1) or two vice supporting seats (1) The front end face of the support seat (2).

3. The advertising device convenient for space expansion according to claim 2, wherein the side rib clamping assembly (3) comprises a side rib clamping seat (301), a driving wheel (302) is rotatably arranged on one side of the side rib clamping seat (301) far away from the auxiliary supporting seat (2), a first adapter (303) is fixedly connected to the end of the driving wheel (302), a first bearing (304) is sleeved on the surface of the first adapter (303), and the first bearing (304) is clamped on the end surface of the inner side of the side rib clamping seat (301).

4. The propaganda device convenient for space expansion according to claim 3, wherein the bridge-type connecting assembly (5) comprises a connecting sleeve (501), a telescopic connecting frame (502) is slidably arranged inside the connecting sleeve (501), one end of the telescopic connecting frame (502) is fixedly connected to the rear end face of the side rib clamping seat (301), the other end of the telescopic connecting frame (502) is fixedly connected with a second toothed panel (503) located inside the connecting sleeve (501), a second coupling gear (504) is arranged between the two second toothed panels (503), the two second toothed panels (503) are respectively meshed with the two second coupling gears (504), the second coupling gear (504) is connected to the inner side end face of the connecting sleeve (501) in a driving manner through a third adapter cylinder (505) and a third bearing (506), and a first inner dense toothed line is arranged on the inner side wall of the third adapter cylinder (505) at a position corresponding to the first dense toothed line (803) (507).

5. The propaganda device convenient for space expansion according to claim 4, wherein the radian-adjusting component (7) comprises a bracket (706), the rear end face of the bracket (706) is fixedly connected to the front end face of the connecting column (6), a fourth bearing (702) is clamped to the front end face of the bracket (706), a first threaded barrel (703) is sleeved in the fourth bearing (702), a first threaded rod (704) is connected to the first threaded barrel (703) in a threaded manner, the first threaded rod (704) is fixedly connected to the opposite face of the main supporting seat (1), the radian-adjusting component (7) further comprises a driven bevel gear (705), a driving bevel gear (701) is engaged with the surface of the driven bevel gear (705), and the driving bevel gear (701) is fixedly connected to the surface of the driving shaft (801).

6. The propaganda device convenient for space expansion according to claim 5, wherein the center of gravity adjusting component (9) comprises a base (901), the base (901) is slidably connected with the bridge-type connecting component (5), a sliding connecting port (902) is formed at the top of the base (901), a second sliding connecting seat (903) is slidably connected with the sliding connecting port (902), a fourth adapter cylinder (905) is inserted into the bottom of the second sliding connecting seat (903), the fourth adapter cylinder (905) is rotatably connected with the second sliding connecting seat (903), a second threaded cylinder (909) is fixedly connected with the bottom of the fourth adapter cylinder (905), a second threaded rod (906) is connected with the second threaded cylinder (909) in a threaded manner, and the bottom of the second threaded rod (906) is fixedly connected with the top of the wedge-shaped seat (908) through a gas spring (907), the bottom of the wedge-shaped seat (908) is connected to the inclined plane of the counterweight block (10) in a sliding manner, and the counterweight block (10) is positioned in a passing connecting port (11) formed in the end face of the front side of the base (901).

7. The advertising device convenient for space expansion according to claim 6, wherein the linkage assembly (12) comprises a third insection panel (121), the top of the third insection panel (121) is fixedly connected to the bottom of the counterweight (10), the bottom of the third insection panel (121) is in transmission connection with the top of a fourth insection panel (125) through a third linkage gear (122), the fourth insection panel (125) is in sliding connection with a second sliding connection groove (126) formed in the bottom of the inner side of the base (901), the end surface of the inner side of the second sliding connection groove (126) is fixedly connected with a surface close to the fourth insection panel (125) through a fifth support spring (129), a sixth bearing (123) is clamped on the side end surface of the third linkage gear (122), and a fifth adapter cylinder (124) is sleeved in the sixth bearing (123), the end part of the fifth adapter cylinder (124) is fixedly connected to the end surface of the inner side of the base (901), the top part of the fourth insection panel (125) is fixedly connected with the outer arc surface of a seventh bearing (128) through a linkage frame (127), and the seventh bearing (128) is sleeved on the surface of a second threaded cylinder (909).

8. The propaganda device convenient to expand space of claim 7, wherein the drive assembly (8) comprises a drive shaft (801), an insertion connection port (802) is formed on an extrados surface of the top of the drive shaft (801), two first driving type dense insections (803) and one second driving type dense insection (804) are sequentially formed on the surface of the drive shaft (801) from top to bottom, a first inner dense insection (507) is formed on the inner side wall of the third adapter cylinder (505) at a position corresponding to the first driving type dense insection (803), and a second inner dense insection (910) is formed on the inner side wall of the fourth adapter cylinder (905) at a position corresponding to the second driving type dense insection (804).

9. The advertising device convenient for space expansion according to claim 8, wherein the positioning assembly (13) comprises an outer casing (131) sleeved on the surface of the driving shaft (801), the outer casing (131) is sleeved on the surface of the driving shaft (801), the surface of the driving shaft (801) is further fixedly connected with a first movable magnetic seat (132) located inside the outer casing (131), the inner side wall of the outer casing (131) is further fixedly connected with a first fixed magnetic seat (133), the surface of the driving shaft (801) is further fixedly connected with a second movable magnetic seat (134), the inner side end surface of the outer casing (131) is fixedly connected with a second fixed magnetic seat (135) at a position corresponding to the second movable magnetic seat (134), the surface of the driving shaft (801) is further sleeved with an adapter sleeve (136), and the inner side wall of the adapter sleeve (136) is provided with an adapter groove (138), the switching groove (138) is connected with a switching frame (137) in a rolling mode, the switching frame (137) is fixedly connected to the surface of the driving shaft (801), a fourth supporting spring (139) is sleeved on the surface of the switching sleeve (136), and the end portion of the fourth supporting spring (139) is fixedly connected to the inner side wall of the outer shell (131).

10. A method of using a promotional device to facilitate space expansion, comprising the steps of:

step S1: the lever is connected into the plug-in connecting port (802), the driving shaft (801) is lifted until the second movable magnetic base (134) is attracted with the second fixed magnetic base (135), at the moment, the first driving type close insection (803) is meshed with the first inner close insection (507), then the direction and the revolution of the lever are controlled according to the amplitude requirement of the expanded space, the driving shaft (801) utilizes the linkage effect between the first driving type close insection (803) and the first inner close insection (507) to apply the torsional force on the third adapter cylinder (505) in the rotating process, so that the third adapter cylinder (505) drives the second linkage gear (504) to rotate in the third bearing (506), and utilizes the transmission effect between the second linkage gear (504) and the second insection panel (503), therefore, the side rib clamping base (301) can be driven by the telescopic connecting and locking frame (502) to perform corresponding telescopic action in the interior of the interlocking sleeve (501), then, the combination of a single auxiliary supporting seat (2), a side rib clamping seat (301) and a main supporting seat (1) or the combination of a plurality of auxiliary supporting seats (2), side rib clamping seats (301) and main supporting seats (1) is realized in a butt joint mode, so that the single-side display area of the extended education propaganda paper is realized, the flexibility is high, the use is convenient, and a proper display surface is provided as required;

step S2: the transmission wheel (302) which rotates in the first bearing (304) through the first adapter cylinder (303) is arranged in the side rib clamping seat (301), on one hand, single-side education publicity paper display can be directly carried out on the front side end faces of the main supporting seat (1) and the auxiliary supporting seat (2), on the other hand, multiple groups of education publicity paper display can be carried out, transmission type replacement of the education publicity paper is carried out in a driving mode, and the smoothness of the education publicity paper in the transmission process is effectively guaranteed through the transmission wheel (302);

step S3: when the educational publicity paper is attached to the main supporting seat (1) and the auxiliary supporting seat (2), the first limiting wheel (406) is firstly moved upwards, the first outer connecting sleeve (402) rotates in the passing connecting cylinder (401) through the pin shaft (403) and is pressed on the lifting seat (408) through the hemispheroid (407), the lifting seat (408) pushes the first insection panel (409) to move downwards under the action of pressure, the second outer connecting sleeve (415) is driven to rotate in the second bearing (414) through the corresponding second switching cylinder (419) by utilizing the linkage relation among the first insection panel (409), the fourth linkage gear (420) and the first linkage gear (413), and the educational publicity paper can be connected to the front side end face of the main supporting seat (1) and the auxiliary supporting seat (2) after the first limiting wheel (406) and the second limiting wheel (418) are unfolded, then, the acting force acting on the first limiting wheel (406) is slowly removed, under the driving of the reset elastic force of the third supporting spring (412), the education rice paper is clamped and connected to the main supporting seat (1) and the auxiliary supporting seat (2) by utilizing the first limiting wheel (406) and the second limiting wheel (418), the first limiting wheel (406) can perform corresponding telescopic action in the first outer connecting sleeve (402) through the first inner telescopic frame (404), the second inner telescopic frame (416) performs corresponding telescopic action in the second outer connecting sleeve (415), the education rice paper with different thicknesses can be conveniently pasted on the main supporting seat (1) and the auxiliary supporting seat (2), and the first limiting wheel (406) and the second limiting wheel (418) have the rolling function;

step S4: after the educational and propaganda paper is pasted on the main supporting seat (1) and the auxiliary supporting seat (2), the driving shaft (801) is pressed downwards through the lever, the second movable magnetic seat (134) is separated from the second movable magnetic seat (134), the driving shaft (801) is supported by the fourth supporting spring (139), the driving bevel gear (701) and the driven bevel gear (705) are meshed at the moment, the driving shaft (801) is stirred to rotate, the first threaded cylinder (703) is driven to rotate in the fourth bearing (702) by utilizing the linkage effect between the driving bevel gear (701) and the driven bevel gear (705), under the combined effect of torsion and thread biting force, the first threaded rod (704) can displace in the first threaded cylinder (703), the central position of the main supporting seat (1) is pulled to be sunken towards the rear side to be matched with the auxiliary supporting seat (2), a complete curved surface display panel can be formed, according to the characteristics of curved surface display, the wide angle range of the education propaganda paper is effectively enlarged, the effect is good even if the education propaganda paper is viewed at an angle deviating from the center, the radian of the curved surface display panel can ensure that the distance between eyes is equal, and therefore the curved surface display panel can bring better sensory experience;

step S5: the driving shaft (801) is pressed again through the lever until the first movable magnetic base (132) is attracted with the first fixed magnetic base (133), at the moment, the second driving type dense insection (804) is meshed with the second inner dense insection (910), then the driving shaft (801) is twisted to drive the fourth adapter cylinder (905) to rotate in the fifth bearing (904), so that the second threaded rod (906) can be displaced in the second threaded cylinder (909), the wedge base (908) is controlled to descend after expansion by utilizing the mutual matching between the gas spring (907) and the fifth supporting spring (129), the wedge base (908) can be seen to be pushed forwards in the descending process, the counterweight block (10) can be pushed forwards according to the force decomposition principle, and the transmission effect among the third insection panel (121), the third linkage gear (122) and the fourth insection panel (125) can be utilized in the moving process of the counterweight block (10), and then just can drive main tributary supporting seat (1) and vice supporting seat (2) rethread through linkage (127), through making main tributary supporting seat (1) and vice supporting seat (2) rethread, effectively increased the field of vision of study personnel, avoid influencing because of the increase of show area and watch, and the antedisplacement of balancing weight (10) for the focus position of regulation and control whole equipment has effectively guaranteed the stability of whole show equipment.

Technical Field

The invention relates to the field of education and teaching, in particular to a propaganda device, and further relates to a propaganda device convenient for space expansion.

Background

However, the existing propaganda device for education mostly has a fixed structure body on the supporting surface, is not convenient for expanding the space, even if the function of expanding the space is realized, the center of gravity position of the propaganda visual angle and the whole display device can not be rapidly changed according to the use requirement, the stability is poor, and most of the propaganda device is of a simple plane structure, and the visual angle is very limited.

We have therefore improved this and have proposed a promotional device which facilitates space expansion.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: present propaganda device for education, its holding surface are fixed structure mostly, are not convenient for expand the space, even if realized the function in expansion space, also can't change propaganda visual angle and whole display device's focus position as required fast according to the use, poor stability, and be simple planar structure more, the very limited problem of visual angle.

(II) technical scheme

In order to accomplish the above object, the present invention provides a propaganda apparatus facilitating expansion of a space, comprising a main supporting base, the side end face of the main supporting seat is provided with an auxiliary supporting seat, one side face of the auxiliary supporting seat, which is far away from the main supporting seat, is provided with a side rib clamping assembly, two bridge-type connecting components for expanding space and supporting are arranged on the end face of the rear side of the side rib clamping component, and the opposite surfaces of the two bridge-type connecting components are provided with a plurality of connecting columns, a radian regulating component is arranged between the connecting columns and the main supporting seat, a gravity center regulating component is arranged below the bridge-type connecting components, and the inside linkage assembly that is used for regulating and control visual angle and focus that is equipped with of focus regulation and control subassembly, be equipped with the same drive assembly that is used for playing the regulation and control effect between focus regulation and control subassembly, bridge type coupling assembling and the radian regulation and control subassembly, drive assembly's surface is equipped with the locating component who has the function of shifting gears of location.

Wherein, the main supporting seat and the auxiliary supporting seat are respectively clamped with a limiting component for ensuring the stability of the publicity paper, the limiting component comprises a passing connecting cylinder, three passing connecting cylinders are clamped at the top of the main supporting seat or two auxiliary supporting seats, the port at the top of the passing connecting cylinder is hinged with the outer cambered surface of a first outer connecting sleeve through a pin shaft, a first inner telescopic frame is sleeved in the first outer connecting sleeve, one end of the first inner telescopic frame is fixedly connected with the end surface at the inner side of the first outer connecting sleeve through a first supporting spring, the other end of the first inner telescopic frame is fixedly connected with a first limiting wheel, the end part of the first outer connecting sleeve is fixedly connected with a hemisphere, the position corresponding to the hemisphere in the passing connecting cylinder is connected with a lifting seat in a sliding manner, the bottom of the lifting seat is fixedly connected with a first insection panel, one side of the lifting seat far away from the first outer connecting sleeve is fixedly connected with a first sliding connecting seat, the first sliding connection seat is connected in the first sliding connection groove in a sliding mode, a third supporting spring is arranged between the first sliding connection seat and the first sliding connection seat, two ends of the third supporting spring are fixedly connected with the bottom end of the first sliding connection seat and the inner wall of the first sliding connection groove respectively, a fourth linkage gear is meshed at the bottom of the first insection panel, a first linkage gear is meshed at the bottom of the fourth linkage gear, second transfer cylinders are fixedly inserted in the middle of the fourth linkage gear and the first linkage gear, the first linkage gear and the fourth linkage gear are fixedly connected to the surfaces of the two second transfer cylinders respectively, a second bearing is sleeved at the end of each second transfer cylinder and clamped on the inner side end face of each transfer cylinder, and a second outer connecting sleeve is fixedly connected to one face, far away from the first insection panel, of the first linkage gear, the inner side wall of the second outer connecting sleeve is fixedly connected with second limiting wheels through a second supporting spring and a second inner telescopic frame, and the three second limiting wheels and the three first limiting wheels are connected to the front side end face of the main supporting seat or the two auxiliary supporting seats in a rolling mode.

The side rib clamping assembly comprises a side rib clamping seat, a driving wheel is rotatably arranged on one side, away from the auxiliary supporting seat, of the side rib clamping seat, a first transfer cylinder is fixedly connected to the end portion of the driving wheel, a first bearing is sleeved on the surface of the first transfer cylinder, and the first bearing is clamped on the end face of the inner side of the side rib clamping seat.

The bridge type connecting assembly comprises a connecting sleeve, a telescopic connecting frame is arranged in the connecting sleeve in a sliding mode, one end of the telescopic connecting frame is fixedly connected to the rear end face of the side rib clamping seat, the other end of the telescopic connecting frame is fixedly connected to a second toothed panel located inside the connecting sleeve, a second connecting gear is arranged between the two second toothed panels, the two second toothed panels are meshed with the two second connecting gears respectively, the second connecting gear is connected to the inner side end face of the connecting sleeve in a rotating mode through a third switching cylinder and a third bearing, and a first inner dense toothed line is arranged at a position corresponding to a first driving dense toothed line on the inner side wall of the third switching cylinder.

The radian regulation and control assembly comprises a support, the rear end face of the support is fixedly connected to the front end face of the connecting column, a fourth bearing is clamped to the front end face of the support, a first threaded cylinder is sleeved in the fourth bearing, a first threaded rod is connected to the first threaded cylinder in an internal thread mode, the first threaded rod is fixedly connected with the opposite face of the main support seat, the radian regulation and control assembly further comprises a driven bevel gear, a driving bevel gear is meshed to the surface of the driven bevel gear, and the driving bevel gear is fixedly connected to the surface of the driving shaft.

Wherein, focus regulation and control subassembly includes the base to sliding connection between base and the bridge type coupling assembling, the connector that slides has been seted up at the top of base, it has the second to slide the connecting seat to slide in the connector, and the bottom that the second slided the connecting seat alternates and is equipped with a fourth switching section of thick bamboo, a fourth switching section of thick bamboo slides the connecting seat with the second and rotates and be connected, the bottom fixedly connected with second screw thread section of thick bamboo of a fourth switching section of thick bamboo, second screw thread section of thick bamboo female connection has the second threaded rod, the top fixed connection of air spring and wedge seat is passed through to the bottom of second threaded rod, the bottom sliding connection of wedge seat is on the inclined plane of balancing weight to the balancing weight is located the connector that walks that the base front side terminal surface was seted up.

The linkage assembly comprises a third insection panel, the top of the third insection panel is fixedly connected to the bottom of the balancing weight, the bottom of the third insection panel is connected with the top of a fourth insection panel in a transmission mode through a third linkage gear, the fourth insection panel is connected to the inside bottom of the base in a sliding mode and is connected to the inside bottom of the base in a sliding mode, the end face of the inside of the second sliding connecting groove is fixedly connected to the face, close to the fourth insection panel, of a fifth supporting spring, a sixth bearing is connected to the side end face of the third linkage gear in a clamping mode, a fifth adapter cylinder is sleeved in the sixth bearing, the end portion of the fifth adapter cylinder is fixedly connected to the end face of the inside of the base, the top of the fourth insection panel is fixedly connected to the outer arc face of the seventh bearing through a linkage frame, and the seventh bearing is sleeved on the surface of the second threaded cylinder.

The driving assembly comprises a driving shaft, an insertion type connecting port is formed in the outer arc surface of the top of the driving shaft, two first driving type dense insections and one second driving type dense insection are sequentially formed in the surface of the driving shaft from top to bottom, a first inner dense insection is formed in the position, corresponding to the first driving type dense insection, on the inner side wall of the third switching cylinder, a second inner dense insection is formed in the position, corresponding to the second driving type dense insection, on the inner side wall of the fourth switching cylinder.

Wherein, the positioning component comprises an outer shell sleeved on the surface of the driving shaft (801), the outer shell is sleeved on the surface of the driving shaft, the surface of the driving shaft is also fixedly connected with a first movable magnetic seat positioned in the outer shell, and the inner side wall of the outer shell is also fixedly connected with a first fixed magnetic seat, the surface of the driving shaft is also fixedly connected with a second movable magnetic seat, and the end surface of the inner side of the outer shell is fixedly connected with a second fixed magnetic seat at the position corresponding to the second movable magnetic seat, the surface of the driving shaft is also sleeved with a switching sleeve, the inner side wall of the switching sleeve is provided with a switching groove, the switching groove is internally connected with a switching frame in a rolling way, the switching frame is fixedly connected on the surface of the driving shaft, the surface of the adapter sleeve is sleeved with a fourth supporting spring, and the end part of the fourth supporting spring is fixedly connected to the inner side wall of the shell body.

The use method of the propaganda device convenient for space expansion comprises the following steps:

step S1: the lever is connected into the plug-in connecting port, the driving shaft is lifted until the second movable magnetic seat is attracted with the second fixed magnetic seat, at the moment, the first driving type dense insection and the first internal dense insection are meshed, then the direction and the revolution of the lever are controlled according to the amplitude requirement of the expanded space, the driving shaft utilizes the linkage effect between the first driving type dense insection and the first internal dense insection to exert the torsional force on the third adapter cylinder in the rotating process, the third adapter cylinder drives the second linkage gear to rotate in a third bearing, and the transmission effect between the second linkage gear and the second insection panel is utilized, so that the side rib clamping seat can be driven by the telescopic interlocking frame to perform corresponding telescopic action in the interior of the interlocking sleeve, and then the combination between the single auxiliary supporting seat and the side rib clamping seat as well as the main supporting seat or the combination between a plurality of auxiliary supporting seats and the side rib clamping seat as well as the main supporting seat are realized in an abutting mode, therefore, the single-side display area of the extended education propaganda paper is realized, the flexibility is high, the use is convenient, and a suitable display surface can be provided according to the requirement;

step S2: the transmission wheels which rotate in the first bearings through the first switching cylinders are arranged in the side rib clamping seats, on one hand, single-side education publicity paper can be directly displayed on the front side end faces of the main supporting seat and the auxiliary supporting seat, on the other hand, multiple groups of education publicity paper can be displayed, and transmission type replacement of the education publicity paper is performed in a driving mode, wherein the transmission wheels effectively guarantee the smoothness of the education publicity paper in the transmission process;

step S3: when the educational propaganda paper is attached to the main supporting seat and the auxiliary supporting seat, the first limiting wheel is firstly stirred upwards, the first outer connecting sleeve rotates in the passing connecting cylinder through the pin shaft and is pressed on the lifting seat through the hemispheroid, the lifting seat pushes the first insection panel to move downwards under the action of pressure, the educational propaganda paper can be attached and connected to the front end faces of the main supporting seat and the auxiliary supporting seat by utilizing the linkage relation among the first insection panel, the fourth linkage gear and the first linkage gear so as to drive the second outer connecting sleeve to rotate in the second bearing through the corresponding second switching cylinder, after the first limiting wheel and the second limiting wheel are unfolded, the educational propaganda paper can be attached and connected to the front end faces of the main supporting seat and the auxiliary supporting seat, then, the acting force acting on the first limiting wheel is slowly removed, and the educational propaganda paper can be clamped and connected to the main supporting seat and the auxiliary supporting seat by utilizing the first limiting wheel and the second limiting wheel under the driving of the resetting elasticity of the third supporting spring, the first limiting wheel can perform corresponding telescopic action in the first outer connecting sleeve through the first inner telescopic frame, the second inner telescopic frame performs corresponding telescopic action in the second outer connecting sleeve, so that education propaganda paper with different thicknesses can be conveniently pasted on the main supporting seat and the auxiliary supporting seat, and the first limiting wheel and the second limiting wheel have rolling functions;

step S4: after the educational propaganda paper is pasted on the main supporting seat and the auxiliary supporting seat, the driving shaft is pressed downwards through the lever, so that the second movable magnetic seat is separated from the second movable magnetic seat, the driving shaft is supported by the fourth supporting spring, the driving bevel gear and the driven bevel gear are meshed at the moment, the driving shaft is stirred to rotate, the first threaded cylinder is driven to rotate in the fourth bearing by utilizing the linkage effect between the driving bevel gear and the driven bevel gear, under the combined effect of the torque force and the thread occlusion force, the first threaded rod can displace in the first threaded cylinder, the central position of the main supporting seat is pulled to be sunken towards the rear side and is matched with the auxiliary supporting seat, a complete curved surface display panel can be formed, the wide-angle range of the educational propaganda paper is effectively enlarged according to the characteristic of curved surface display, even if the educational propaganda paper is viewed at an angle deviated from the center, the effect is good, and the radian of the curved surface display panel can ensure that the distance between eyes is equal, so that the curved surface display panel can bring better sensory experience;

step S5: the driving shaft is pressed again through the lever until the first movable magnetic base is attracted with the first fixed magnetic base, at the moment, the second driving type dense insection is meshed with the second inner dense insection, then the driving shaft is twisted to drive the fourth adapter cylinder to rotate in the fifth bearing, so that the second threaded rod can displace in the second threaded cylinder, the wedge-shaped base is controlled to descend after capacity expansion by utilizing the mutual matching between the air spring and the fifth supporting spring, the forward thrust can be seen to be applied to the balancing weight in the descending process of the wedge-shaped base according to the force decomposition principle, so that the balancing weight moves forwards, and the main supporting base and the auxiliary supporting base can be driven to move backwards through the linkage frame by utilizing the transmission effect among the third insection panel, the third linkage gear and the fourth insection panel in the moving process of the balancing weight, so that the main supporting base and the auxiliary supporting base can move backwards by enabling the main supporting base and the auxiliary supporting base to move backwards, effectively increased the field of vision of study personnel, avoided influencing because of the increase of show area and watch, and the antedisplacement of balancing weight for the focus position of regulation and control whole equipment has effectively guaranteed whole display device's stability.

(III) advantageous effects

The propaganda device convenient for space expansion provided by the invention has the beneficial effects that:

1. the lever is inserted into the plug-in connecting port through the arranged main supporting seat, the auxiliary supporting seat, the side rib clamping component and the bridge type connecting component, the driving shaft is lifted until the second movable magnetic seat is attracted with the second fixed magnetic seat, at the moment, the first driving type close insection is meshed with the first internal close insection, then the direction and the revolution of the lever are controlled according to the amplitude requirement of an expansion space, the driving shaft utilizes the linkage effect between the first driving type close insection and the first internal close insection to apply the torsional force on the third adapter cylinder in the rotating process, the third adapter cylinder drives the second linkage gear to rotate in the third bearing, the transmission effect between the second linkage gear and the second insection panel is utilized, so that the side rib supporting seat can be driven by the telescopic interlocking frame to perform corresponding telescopic action in the interlocking sleeve, and then the combination between the single auxiliary supporting seat, the side rib clamping seat and the main supporting seat is realized in a butt joint mode, or a plurality of auxiliary supporting seats are combined with the side rib clamping seats and the main supporting seat, so that the single-side display area of the education propaganda paper is expanded, the flexibility is high, the use is convenient, and a proper display surface can be provided according to the requirement;

2. through the arranged side rib clamping assembly, the driving wheel which rotates in the first bearing through the first adapter cylinder is arranged in the side rib clamping seat, on one hand, single-side education rice paper can be directly displayed on the front side end faces of the main supporting seat and the auxiliary supporting seat, on the other hand, multiple groups of education rice paper can be displayed, and transmission type replacement of the education rice paper is carried out in a driving mode, wherein the driving wheel effectively ensures the smoothness of the education rice paper in the transmission process;

3. through the limiting assembly, when the educational propaganda paper is attached to the main supporting seat and the auxiliary supporting seat, the first limiting wheel is firstly stirred upwards, the first outer connecting sleeve rotates in the passing connecting cylinder through the pin shaft and presses the lifting seat through the hemispheroid, the lifting seat pushes the first insection panel to move downwards under the action of pressure, the educational propaganda paper can be attached to and connected with the front end faces of the main supporting seat and the auxiliary supporting seat by utilizing the linkage relation among the first insection panel, the fourth linkage gear and the first linkage gear, and then the second outer connecting sleeve is driven to rotate in the second bearing through the corresponding second switching cylinder, after the first limiting wheel and the second limiting wheel are unfolded, the educational propaganda paper can be clamped and connected to the main supporting seat and the auxiliary supporting seat by utilizing the first limiting wheel and the second limiting wheel, then, the acting force acting on the first limiting wheel is slowly removed, and the educational propaganda paper can be clamped and connected to the main supporting seat and the auxiliary supporting seat under the driving of the reset elasticity of the third supporting spring, the first limiting wheel can perform corresponding telescopic action in the first outer connecting sleeve through the first inner telescopic frame, the second inner telescopic frame performs corresponding telescopic action in the second outer connecting sleeve, so that education propaganda paper with different thicknesses can be conveniently pasted on the main supporting seat and the auxiliary supporting seat, and the first limiting wheel and the second limiting wheel have rolling functions;

4. through the radian regulation and control assembly, after the education and publicity paper is pasted on the main supporting seat and the auxiliary supporting seat, the driving shaft is pressed downwards through the lever, so that the second movable magnetic seat is separated from the second movable magnetic seat, the driving shaft is supported by the fourth supporting spring, the driving bevel gear and the driven bevel gear are meshed at the moment, the driving shaft is stirred to rotate, the first threaded cylinder is driven to rotate in the fourth bearing by utilizing the linkage effect between the driving bevel gear and the driven bevel gear, under the combined action effect of the torque force and the thread occlusion force, the first threaded rod can displace in the first threaded cylinder, the central position of the main supporting seat is pulled to be sunken towards the rear side and matched with the auxiliary supporting seat, a complete curved surface display panel can be formed, and the wide angle range of the education and publicity paper is effectively enlarged according to the characteristic of curved surface display, even if the display is viewed at an angle deviating from the center, the effect is good, and the radian of the curved surface display panel can ensure that the distance between eyes is equal, so that the curved surface display panel can bring better sensory experience;

5. through the gravity center regulating and controlling component and the linkage component, the driving shaft is pressed again through the lever until the first movable magnetic base is attracted with the first fixed magnetic base, at the moment, the second driving type dense insection is meshed with the second internal dense insection, then the driving shaft is twisted to drive the fourth adapter cylinder to rotate in the fifth bearing, under the combined action effect of the torque force and the thread occlusion force, the second threaded rod can be displaced in the second threaded cylinder, the wedge-shaped base is controlled to descend after the capacity expansion by utilizing the mutual matching between the air spring and the fifth supporting spring, the wedge-shaped base can be seen to bear forward thrust in the descending process according to the force decomposition principle in the descending process, so that the balancing weight moves forwards, and because the driving effect among the third insection panel, the third driving gear and the fourth insection panel can also be utilized in the moving process of the balancing weight, the main supporting seat and the auxiliary supporting seat are driven to move backwards through the linkage frame, the field of vision of the study personnel is effectively increased by moving the main supporting seat and the auxiliary supporting seat backwards, the phenomenon that the watching is influenced due to the increase of the display area is avoided, the balancing weight moves forwards, the gravity center position of the whole display equipment is regulated and controlled, and the stability of the whole display equipment is effectively guaranteed;

to sum up, through the focus regulation and control subassembly that sets up, the linkage subassembly, under mutually supporting of radian regulation and control subassembly and limited subassembly isotructure, according to the characteristic of curved surface show, the wide angle scope of education publicity paper has effectively been increased, even watch at the angle of skew center, the effect is good yet, the distance that eyes can be guaranteed to the radian of curved surface show panel is impartial, thereby curved surface show panel can bring better sense organ experience, study personnel's field of vision has still been increased, avoid influencing the watch because of the increase of show area, and the antedisplacement of balancing weight, a barycenter position for regulating and control whole equipment, whole display equipment's stability has effectively been guaranteed, the single face show area of extension education publicity paper has still been realized, the flexibility ratio is high, the aspect is used, be convenient for provide suitable show face as required.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of a promotional device that facilitates space expansion according to the present application;

FIG. 2 is a schematic cross-sectional side view of a positioning assembly of a promotional device that facilitates space expansion according to the present application;

FIG. 3 is a schematic structural view of the propaganda device facilitating space expansion according to the present application after the separation of the position limiting assembly;

FIG. 4 is a schematic cross-sectional view of a left side view of a connecting cylinder of the promotional device for facilitating expansion of space provided herein;

fig. 5 is a schematic structural view of the propaganda device facilitating space expansion, after the main support seat and the auxiliary support seat are disassembled;

FIG. 6 is an enlarged schematic structural view of a promotional device for facilitating space expansion according to the present application;

FIG. 7 is a schematic top view cross-sectional view of a bridge connecting assembly of a promotional device that facilitates space expansion according to the present application;

fig. 8 is a schematic structural diagram of a combination of a third adapter cylinder and a second linkage gear in the propaganda device convenient for space expansion provided by the present application;

fig. 9 is a schematic structural view illustrating a fourth adapter tube and a second threaded tube of the propaganda device facilitating space expansion according to the present application;

FIG. 10 is a schematic cross-sectional view of a base of a promotional device for facilitating expansion of space according to the present application;

FIG. 11 is a schematic perspective view of a drive assembly of a promotional device that facilitates space expansion according to the present application;

FIG. 12 is a schematic perspective view of an arc adjustment assembly of a promotional device for facilitating space expansion according to the present application;

fig. 13 is an enlarged schematic structural diagram of a propaganda device B for facilitating space expansion according to the present application.

1. A main supporting seat; 2. an auxiliary supporting seat; 3. a side rib clamping assembly; 301. a side rib grip; 302. a driving wheel; 303. a first transfer drum; 304. a first bearing; 4. defining an assembly; 401. a connecting cylinder is penetrated; 402. a first outer connecting sleeve; 403. a pin shaft; 404. a first inner telescoping mast; 405. a first support spring; 406. a first limiting wheel; 407. a hemisphere; 408. a lifting seat; 409. a first insection panel; 410. a first sliding connection seat; 411. a first sliding connecting groove; 412. a third support spring; 413. a first linkage gear; 414. A second bearing; 415. a second outer connecting sleeve; 416. a second inner telescoping mast; 417. a second support spring; 418. a second limiting wheel; 419. a second adapter cylinder; 420. a fourth linkage gear; 5. a bridge-type connection assembly; 501. a linking sleeve; 502. a telescopic interlocking frame; 503. a second insection panel; 504. a second linkage gear; 505. a third adapter cylinder; 506. a third bearing; 507. a first inner dense insection; 6. connecting columns; 7. A radian regulation component; 701. a drive bevel gear; 702. a fourth bearing; 703. a first threaded barrel; 704. a first threaded rod; 705. a driven bevel gear; 706. a support; 8. a drive assembly; 801. a drive shaft; 802. a plug-in connector; 803. a first drive type dense insection; 804. a second drive type dense insection; 9. a center of gravity regulating assembly; 901. a base; 902. a sliding connecting port; 903. a second sliding connection seat; 904. a fifth bearing; 905. a fourth adapter cylinder; 906. a second threaded rod; 907. a gas spring; 908. a wedge seat; 909. a second threaded barrel; 910. a second inner dense insection; 10. a balancing weight; 11. a traversing connection port; 12. a linkage assembly; 121. a third insection panel; 122. a third driving gear; 123. a sixth bearing; 124. a fifth transfer cylinder; 125. a fourth insection panel; 126. a second sliding connecting groove; 127. a linkage frame; 128. a seventh bearing; 129. a fifth support spring; 13. a positioning assembly; 131. an outer housing; 132. a first movable magnetic base; 133. a first fixed magnetic base; 134. a second movable magnetic base; 135. a second fixed magnetic base; 136. a transfer sleeve; 137. a transfer rack; 138. a transfer groove; 139. and a fourth support spring.

Detailed Description

The following detailed description of the embodiments of the present invention is made with reference to the drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Example 1:

as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11, fig. 12, and fig. 13, the present embodiment provides a propaganda device convenient for space expansion, which includes a main supporting seat 1, an auxiliary supporting seat 2 is provided on a side end surface of the main supporting seat 1, a side rib clamping component 3 is provided on a side surface of the auxiliary supporting seat 2 away from the main supporting seat 1, two bridge-type connecting components 5 for space expansion and supporting are provided on a rear side end surface of the side rib clamping component 3, a plurality of connecting columns 6 are provided on opposite surfaces of the two bridge-type connecting components 5, an arc regulation component 7 is provided between the connecting columns 6 and the main supporting seat 1, a center-of gravity regulation component 9 is provided below the bridge-type connecting components 5, and a linkage component 12 for regulating a viewing angle and a center of gravity is provided inside the center regulation component 9, be equipped with same drive assembly 8 that is used for playing the regulation and control effect between focus regulation and control subassembly 9, bridge type coupling assembling 5 and the radian regulation and control subassembly 7, drive assembly 8's surface is equipped with the locating component 13 that has the function of shifting gears in the location.

Example 2:

the scheme of example 1 is further described below in conjunction with specific working modes, which are described in detail below:

as shown in fig. 1, 2, 3, 5, 6, 10 and 13, as a preferred embodiment, on the basis of the above manner, further, a limiting component 4 for ensuring the stability of the promotional paper is clamped on each of the main supporting seat 1 and the auxiliary supporting seat 2, the limiting component 4 includes a passing connecting cylinder 401, three passing connecting cylinders 401 are clamped on the top of the main supporting seat 1 or two auxiliary supporting seats 2, a port at the top of the passing connecting cylinder 401 is hinged to an outer arc surface of a first outer connecting sleeve 402 through a pin 403, a first inner telescopic frame 404 is sleeved inside the first outer connecting sleeve 402, one end of the first inner telescopic frame 404 is fixedly connected to an end surface inside the first outer connecting sleeve 402 through a first supporting spring 405, the other end of the first inner telescopic frame 404 is fixedly connected to a first limiting wheel 406, an end of the first outer connecting sleeve 402 is fixedly connected to a hemisphere 407, a lifting seat 408 is slidably connected to a position corresponding to the hemisphere 407 in the passing connecting cylinder 401, a first insection panel 409 is fixedly connected to the bottom of the lifting seat 408, a first sliding connecting seat 410 is fixedly connected to a side of the lifting seat 408 far from the first outer connecting sleeve 402, the first sliding connecting seat 410 is slidably connected to the first sliding connecting seat 411, a third supporting spring 412 is arranged between the first sliding connecting seat 411 and the first sliding connecting seat 410, two ends of the third supporting spring 412 are respectively fixedly connected to the bottom end of the first sliding connecting seat 410 and the inner wall of the first sliding connecting seat 411, a fourth interlocking gear 420 is engaged to the bottom of the first insection panel 409, a first interlocking gear 413 is engaged to the bottom of the fourth interlocking gear 420, and a second adapter cylinder 419 is fixedly inserted between the fourth interlocking gear 420 and the first interlocking gear 413, the first linkage gear 413 and the fourth linkage gear 420 are respectively and fixedly connected to the surfaces of two second adapter cylinders 419, the end part of each second adapter cylinder 419 is sleeved with a second bearing 414, the second bearing 414 is clamped on the inner side end surface of the corresponding traversing connection cylinder 401, one surface of the first linkage gear 413 far away from the first insection panel 409 is fixedly connected with a second outer connection sleeve 415, the inner side wall of the second outer connection sleeve 415 is fixedly connected with a second limiting wheel 418 through a second support spring 417 and a second inner telescopic frame 416, the three second limiting wheels 418 and the three first limiting wheels 406 are in rolling connection with the front side end surfaces of the main support base 1 or the two auxiliary support bases 2, when educational propaganda paper is attached to the main support base 1 and the auxiliary support bases 2, the first limiting wheels are firstly moved upwards, the first outer connection sleeve 402 rotates in the traversing connection cylinder 401 through a pin shaft 403, the hemisphere 407 presses the lifting seat 408, the lifting seat 408 pushes the first insection panel 409 to move downwards under the action of pressure, the linkage relationship among the first insection panel 409, the fourth linkage gear 420 and the first linkage gear 413 is utilized, so that the second outer connecting sleeve 415 is driven to rotate in the second bearing 414 through the corresponding second adapter tube 419, after the first limiting wheel 406 and the second limiting wheel 418 are unfolded, the educational publicity paper can be attached and connected to the front side end surfaces of the main supporting seat 1 and the auxiliary supporting seat 2, then the acting force acting on the first limiting wheel 406 is slowly removed, under the driving of the resetting elastic force of the third supporting spring 412, the educational publicity paper can be clamped and connected to the main supporting seat 1 and the auxiliary supporting seat 2 through the first limiting wheel 406 and the first inner telescopic frame 404, and corresponding telescopic action can be carried out in the first outer connecting sleeve 402 through the first limiting wheel 406, the second inner expansion bracket 416 performs corresponding expansion and contraction actions in the second outer connecting sleeve 415, so that education propaganda paper with different thicknesses can be pasted on the main supporting seat 1 and the auxiliary supporting seat 2 conveniently.

As shown in fig. 1, 3, 4, 5 and 6, in addition to the above-mentioned preferred embodiment, the side rib gripper assembly 3 further includes a side rib gripper 301, a driving wheel 302 is rotatably provided on a side of the side rib gripper 301 away from the sub-carriage 2, a first adapter 303 is fixedly connected to an end of the driving wheel 302, a first bearing 304 is sleeved on a surface of the first adapter 303, the first bearing 304 is engaged with an end surface of an inner side of the side rib gripper 301, the side rib gripper 301 is provided with the driving wheel 302 rotating in the first bearing 304 via the first adapter 303, on one hand, the educational single-sided promotional paper can be displayed directly on front side end surfaces of the main carriage 1 and the sub-carriage 2, on the other hand, multiple sets of educational promotional paper can be displayed, and the educational promotional paper can be replaced by driving, wherein the driving wheel 302 effectively ensures the fluency of the education propaganda paper in the driving process.

As shown in fig. 1, 7 and 8, in addition to the above-mentioned mode, as a preferred embodiment, the bridge-type connecting assembly 5 further includes a locking sleeve 501, a telescopic locking frame 502 is slidably disposed inside the locking sleeve 501, one end of the telescopic locking frame 502 is fixedly connected to a rear end face of the side rib clamping seat 301, the other end of the telescopic locking frame 502 is fixedly connected to a second toothed surface plate 503 disposed inside the locking sleeve 501, a second coupling gear 504 is disposed between the two second toothed surface plates 503, the two second toothed surface plates 503 are respectively engaged with the two second coupling gears 504, the second coupling gear 504 is connected to an inner end face of the locking sleeve 501 through a third adapter cylinder 505 and a third bearing 506, a first inner dense tooth 507 is disposed on an inner side wall 505 of the third adapter cylinder at a position corresponding to the first dense tooth 803, in the process of rotation of the driving shaft 801, a torsional force acts on the third adapter cylinder 505 by using a linkage effect between the first driving type dense insection 803 and the first inner dense insection 507, so that the third adapter cylinder 505 drives the second linkage gear 504 to rotate in the third bearing 506, and the transmission effect between the second linkage gear 504 and the second insection panel 503 is used, so that the side rib supporting seat can be driven by the telescopic locking frame 502 to perform corresponding telescopic actions inside the locking sleeve 501.

As shown in fig. 1, 11 and 12, as a preferred embodiment, in addition to the above-mentioned manner, the radian-adjusting member 7 includes a bracket 706, a rear end surface of the bracket 706 is fixedly connected to a front end surface of the connecting column 6, a front end surface of the bracket 706 is engaged with a fourth bearing 702, the fourth bearing 702 is sleeved with a first threaded cylinder 703, the first threaded cylinder 703 is connected with a first threaded rod 704 through a female thread, the first threaded rod 704 is fixedly connected to an opposite surface of the main support base 1, the radian-adjusting member 7 further includes a driven bevel gear 705, a driving bevel gear 701 is engaged with a surface of the driven bevel gear 705, the driving bevel gear 701 is fixedly connected to a surface of the driving shaft 801, after the educational propaganda paper is attached to the main support base 1 and the auxiliary support base 2, the driving shaft 801 is pressed downward by a lever, the second movable magnetic seat 134 is separated from the second movable magnetic seat 134, and the fourth support spring 139 supports the driving shaft 801, at this time, the driving bevel gear 701 is engaged with the driven bevel gear 705, the driving shaft 801 is stirred to rotate, and the first threaded cylinder 703 is driven to rotate in the fourth bearing 702 by using the linkage effect between the driving bevel gear 701 and the driven bevel gear 705, so that under the combined effect of the torsion and the thread engagement force, the first threaded rod 704 is displaced in the first threaded cylinder 703, the central position of the main support seat 1 is pulled to be recessed towards the rear side, and the main support seat 1 is matched with the auxiliary support seat 2, and a complete curved surface display panel can be formed.

As shown in fig. 1, 10 and 11, as a preferred embodiment, on the basis of the above manner, further, the center of gravity adjusting assembly 9 includes a base 901, and the base 901 is slidably connected with the bridge-type connecting assembly 5, a sliding connection port 902 is formed at the top of the base 901, a second sliding connection seat 903 is slidably connected in the sliding connection port 902, a fourth adapter 905 is inserted through the bottom of the second sliding connection seat 903, the fourth adapter 905 is rotatably connected with the second sliding connection seat 903, a second threaded cylinder 909 is fixedly connected at the bottom of the fourth adapter 905, a second threaded rod 906 is threadedly connected in the second threaded cylinder, the bottom of the second threaded rod 906 is fixedly connected with the top of a wedge 908 through a gas spring 907, the bottom of the wedge 908 is slidably connected on an inclined surface of the counterweight 10, and the counterweight 10 is located in the through connection port 11 formed on the front side end surface of the base 901, the driving shaft 801 is pressed through a lever until the first movable magnetic seat 132 and the first fixed magnetic seat 133 are attracted, at the moment, the second driving type dense tooth lines 804 are meshed with the second inner dense tooth lines 910, then the driving shaft 801 is twisted to drive the fourth adapter sleeve 905 to rotate in the fifth bearing 904, under the combined action effect of the torsion and the thread engagement force, the second threaded rod 906 can be displaced in the second threaded sleeve 909, the wedge base 908 is controlled to move downwards after expansion by utilizing the mutual matching between the air spring 907 and the fifth supporting spring 129, and the wedge base 908 can be seen to be pushed forwards by the counterweight block 10 in the descending process according to the decomposition principle of force.

As shown in fig. 10, as a preferred embodiment, in addition to the above-mentioned mode, the linkage assembly 12 further includes a third insection panel 121, a top of the third insection panel 121 is fixedly connected to a bottom of the counterweight 10, the bottom of the third insection panel 121 is in transmission connection with a top of a fourth insection panel 125 through a third linkage gear 122, the fourth insection panel 125 is slidably connected in a second sliding connection groove 126 formed in a bottom inside the base 901, an end surface inside the second sliding connection groove 126 is also fixedly connected to a surface close to the fourth insection panel 125 through a fifth support spring 129, a sixth bearing 123 is clamped on a side end surface of the third linkage gear 122, a fifth adapter cylinder 124 is sleeved inside the sixth bearing 123, an end of the fifth adapter cylinder 124 is fixedly connected to an end surface inside the base 901, a top of the fourth insection panel 125 is fixedly connected to an outer arc surface of the seventh bearing 128 through a linkage frame 127, the seventh bearing 128 is sleeved on the surface of the second threaded cylinder 909, and the counterweight 10 can further utilize the transmission effect among the third insection panel 121, the third driving gear 122 and the fourth insection panel 125 in the moving process, so that the main supporting seat 1 and the auxiliary supporting seat 2 can be driven to move backwards through the linkage frame 127, the field of vision of learners is effectively increased by moving the main supporting seat 1 and the auxiliary supporting seat 2 backwards, the influence on viewing due to the increase of the display area is avoided, and the counterweight 10 moves forwards to regulate and control the gravity center position of the whole equipment.

As shown in fig. 2, 11 and 12, as a preferred embodiment, based on the above manner, further, the driving assembly 8 includes a driving shaft 801, an insertion connection port 802 is formed on an outer arc surface of a top portion of the driving shaft 801, two first driving type dense insections 803 and one second driving type dense insection 804 are sequentially formed on a surface of the driving shaft 801 from top to bottom, a first inner dense insection 507 is formed on an inner side wall of the third adapter cylinder 505 at a position corresponding to the first driving type dense insection 803, a second inner dense insection 910 is formed on an inner side wall of the fourth adapter cylinder 905 at a position corresponding to the second driving type dense insection 804, the radian adjusting assembly 7 further includes a driven bevel gear 705, a driving bevel gear 701 is engaged with a surface of the driven bevel gear 705, the driving bevel gear 701 is fixedly connected to the surface of the driving shaft 801, and a lever is inserted into the insertion connection port 802, and the driving shaft 801 is lifted up until the second movable magnetic seat 134 is attracted to the second fixed magnetic seat 135, at this time, the first driving type dense insection 803 is meshed with the first inner dense insection 507, then the direction and the revolution of the toggle lever are controlled according to the amplitude requirement of the expanded space, and the driving shaft 801 applies a torsional force to the third adapter cylinder 505 by utilizing the linkage effect between the first driving type dense insection 803 and the first inner dense insection 507 in the rotating process.

As shown in fig. 2, as a preferred embodiment, based on the above manner, further, the positioning assembly 13 includes an outer shell 131 sleeved on the surface of the driving shaft 801, the outer shell 131 is sleeved on the surface of the driving shaft 801, the surface of the driving shaft 801 is further fixedly connected with a first movable magnetic seat 132 located inside the outer shell 131, the inner side wall of the outer shell 131 is further fixedly connected with a first fixed magnetic seat 133, the surface of the driving shaft 801 is further fixedly connected with a second movable magnetic seat 134, the inner side end surface of the outer shell 131 is fixedly connected with a second fixed magnetic seat 135 corresponding to the position of the second movable magnetic seat 134, the surface of the driving shaft 801 is further sleeved with an adapter sleeve 136, the inner side wall of the adapter sleeve 136 is provided with an adapter groove 138, the adapter frame 137 is connected to the surface of the driving shaft 801 in a rolling manner, the adapter frame 137 is fixedly connected to the surface of the driving shaft 801, the surface of the adapter sleeve 136 is sleeved with a fourth supporting spring 139, the end of the fourth supporting spring 139 is fixedly connected to the inner side wall of the outer shell 131, the driving shaft 801 is lifted up until the second movable magnetic seat 134 is attracted to the second fixed magnetic seat 135, at this time, the first driving type dense insections 803 are meshed with the first internal dense insections 507, and then the direction and the number of turns of the toggle lever are controlled according to the requirement of the amplitude of the expanded space.

Example 3:

the schemes of example 1 and example 2 are further described below in conjunction with specific working examples, which are described in detail below:

specifically, this propaganda device convenient to extension space when during operation/use:

step S1: the lever is connected into the plug-in connection port 802, the driving shaft 801 is lifted up until the second movable magnetic base 134 is attracted to the second fixed magnetic base 135, at this time, the first driving type dense insection 803 is meshed with the first internal dense insection 507, then the direction and the revolution of the lever are controlled according to the amplitude requirement of the expanded space, the driving shaft 801 uses the linkage effect between the first driving type dense insection 803 and the first internal dense insection 507 to apply the torsion force on the third adapter cylinder 505 in the rotating process, so that the third adapter cylinder 505 drives the second linkage gear 504 to rotate in the third bearing 506, and uses the transmission effect between the second linkage gear 504 and the second insection panel 503, so that the side rib clamping base 301 can be driven by the telescopic locking frame 502 to perform corresponding telescopic action inside the interlocking sleeve 501, and then the combination of the single auxiliary supporting base 2, the side rib clamping base 301 and the main supporting base 1 can be realized in a butt joint manner, or a plurality of auxiliary supporting seats 2 are combined with the side rib clamping seats 301 and the main supporting seat 1, so that the single-sided display area of the education propaganda paper is expanded, the flexibility is high, the use is convenient, and a suitable display surface can be provided according to the requirement;

step S2: the transmission wheel 302 which rotates in the first bearing 304 through the first transfer cylinder 303 is arranged in the side rib clamping seat 301, on one hand, single-side education propaganda paper can be displayed directly on the front side end faces of the main supporting seat 1 and the auxiliary supporting seat 2, on the other hand, multiple groups of education propaganda paper can be displayed, and transmission type replacement of the education propaganda paper is performed in a driving mode, wherein the transmission wheel 302 effectively ensures the fluency of the education propaganda paper in the transmission process;

step S3: when the educational publicity paper is attached to the main supporting seat 1 and the auxiliary supporting seat 2, the first limiting wheel 406 is firstly pulled upwards, the first outer connecting sleeve 402 will rotate in the passing connecting cylinder 401 through the pin 403 and is pressed on the lifting seat 408 through the hemisphere 407, the lifting seat 408 is pressed to push the first insection panel 409 to move downwards, the second outer connecting sleeve 415 will be driven to rotate in the second bearing 414 through the corresponding second switching cylinder 419 by utilizing the linkage relationship among the first insection panel 409, the fourth linkage gear 420 and the first linkage gear 413, after the first limiting wheel 406 and the second limiting wheel 418 are unfolded, the educational publicity paper can be attached to the front end surfaces of the main supporting seat 1 and the auxiliary supporting seat 2, then, the acting force on the first limiting wheel 406 is slowly removed, and under the driving of the reset elastic force of the third supporting spring 412, furthermore, the educational propaganda paper can be clamped and connected to the main supporting seat 1 and the auxiliary supporting seat 2 by utilizing the first limiting wheel 406 and the second limiting wheel 418, and the first limiting wheel 406 can perform corresponding telescopic action in the first outer connecting sleeve 402 through the first inner telescopic frame 404, and the second inner telescopic frame 416 performs corresponding telescopic action in the second outer connecting sleeve 415, so that educational propaganda paper with different thicknesses can be pasted on the main supporting seat 1 and the auxiliary supporting seat 2, and the first limiting wheel 406 and the second limiting wheel 418 both have rolling functions;

step S4: after the educational and propaganda paper is pasted on the main supporting seat 1 and the auxiliary supporting seat 2, the driving shaft 801 is pressed downwards through the lever, so that the second movable magnetic seat 134 is separated from the second movable magnetic seat 134, the driving shaft 801 is supported by the fourth supporting spring 139, the driving bevel gear 701 and the driven bevel gear 705 are engaged at the moment, the driving shaft 801 is stirred to rotate, the first threaded cylinder 703 is driven to rotate in the fourth bearing 702 by utilizing the linkage effect between the driving bevel gear 701 and the driven bevel gear 705, under the combined effect of the torsion and the thread biting force, the first threaded rod 704 displaces in the first threaded cylinder 703, the central position of the main supporting seat 1 is pulled to be recessed towards the rear side and matched with the auxiliary supporting seat 2, a complete curved surface display panel can be formed, according to the characteristics of curved surface display, the wide angle range of the education propaganda paper is effectively enlarged, the effect is good even if the education propaganda paper is watched at an angle deviating from the center, and the radian of the curved surface display panel can ensure that the distances between eyes are equal, so that the curved surface display panel can bring better sensory experience;

step S5: the driving shaft 801 is pressed again through the lever until the first movable magnetic base 132 is attracted to the first fixed magnetic base 133, at this time, the second driving type dense insection 804 is meshed with the second inner dense insection 910, then the driving shaft 801 is twisted to drive the fourth adapter tube 905 to rotate in the fifth bearing 904, so that the second threaded rod 906 is displaced in the second threaded tube 909, the wedge-shaped seat 908 is controlled to descend after the expansion by utilizing the mutual matching between the air spring 907 and the fifth supporting spring 129, and in the descending process of the wedge-shaped seat 908, the counterweight 10 can be pushed forward according to the force decomposition principle in the process of descending, so that the counterweight 10 moves forward, because the counterweight 10 can also utilize the transmission effect among the third insection panel 121, the third transmission gear 122 and the fourth insection panel 125 in the moving process, so that the main supporting base 1 and the auxiliary supporting base 2 are driven to move backward by the linkage frame 127, through making main supporting seat 1 and vice supporting seat 2 rethread, effectively increased the field of vision of study personnel, avoid influencing because of the increase of show area and watch, and the antedisplacement of balancing weight 10 for the focus position of regulation and control whole equipment has effectively guaranteed whole display device's stability.

The above embodiments are merely illustrative of the present invention and are not to be construed as limiting the invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims of the present invention.