阅读说明：本技术 一种音乐教学用便于携带的辅助设备 (Music teaching is with portable's auxiliary assembly ) 是由 韩琨 毛百川 韩垆瑾 于 2021-09-08 设计创作，主要内容包括：本发明涉及音乐教育技术领域,且公开了一种音乐教学用便于携带的辅助设备,包括底座,所述底座的上表面竖杆,所述竖杆的顶端固定连接有活塞,所述竖杆的外侧位于所述底座的上方套设有套筒,所述套筒的内侧壁与所述活塞的外侧壁相贴合,且与所述活塞滑动连接,所述套筒为下表面开口的中空长方体结构,所述套筒的上表面开设有贯穿式的通气孔；本发明通过设置的竖杆、活塞和套筒,方便调整顶座和底座之间的距离,从而可以根据使用者的需求不同对放置板的高度进行调整,使用时通过活塞在套筒内滑动,达到调整高度的作用,通过橡胶塞塞住通气孔,使得套筒密封,从而使得活塞不会在套筒内滑动,达到定位的效果。(The invention relates to the technical field of music education, and discloses portable auxiliary equipment for music teaching, which comprises a base, wherein a vertical rod is arranged on the upper surface of the base, a piston is fixedly connected to the top end of the vertical rod, a sleeve is sleeved on the outer side of the vertical rod and positioned above the base, the inner side wall of the sleeve is attached to the outer side wall of the piston and is in sliding connection with the piston, the sleeve is of a hollow cuboid structure with an opening on the lower surface, and a through type air vent is formed in the upper surface of the sleeve; according to the invention, the distance between the top seat and the base can be conveniently adjusted through the vertical rod, the piston and the sleeve, so that the height of the placing plate can be adjusted according to different requirements of users, the piston slides in the sleeve to achieve the effect of adjusting the height when the positioning device is used, the vent hole is plugged through the rubber plug, the sleeve is sealed, and therefore, the piston cannot slide in the sleeve, and the positioning effect is achieved.)

1. The utility model provides a music teaching is with auxiliary assembly of portable, includes base (1), its characterized in that: upper surface montant (2) of base (1), top fixedly connected with piston (3) of montant (2), the outside of montant (2) is located the top cover of base (1) is equipped with sleeve (4), the inside wall of sleeve (4) with the outside wall of piston (3) is laminated mutually, and with piston (3) sliding connection, sleeve (4) are lower surface open-ended cavity cuboid structure, air vent (5) of run-through are seted up to the upper surface of sleeve (4), the inner wall block of air vent (5) has rubber buffer (6), the top fixedly connected with footstock (7) of sleeve (4), the upper surface of footstock (7) is located set up run-through's mounting groove (8), the bottom of mounting groove (8) with the top of air vent (5) is linked together, the top of rubber buffer (6) is located the inner wall fixedly connected with closing cap (9) of mounting groove (8) A through movable groove (10) is arranged on the front surface of the sealing cover (9), a movable block (11) is connected to the inner part of the movable groove (10) in a sliding manner, a first spring (12) is fixedly connected between the opposite sides of the two movable blocks (11), a rotating rod (13) is connected to the inner wall of the mounting groove (8) in a rotating manner, the right end of the rotating rod (13) penetrates through the right side of the top seat (7) and is fixedly connected with a connecting plate (14), a handle (15) is fixedly connected to the right side of the connecting plate (14), the outer side wall of the rotating rod (13) is positioned on a cam (16) fixedly connected to the inner wall of the mounting groove (8), connecting grooves (17) are formed in the left side and the right side of the cam (16), a movable sleeve (18) is symmetrically fixed to the inner wall of the mounting groove (8), and two U-shaped rods (19) are connected to the inner wall of the movable sleeve (18) in a sliding manner, a first connecting rod (20) is integrally formed at the top of the U-shaped rod (19), a concave connecting piece (21) is fixedly connected to the top end of the first connecting rod (20), rollers (22) are symmetrically rotated on the inner wall of the concave connecting piece (21), the two rollers (22) are respectively positioned inside the two connecting grooves (17) and are respectively in sliding connection with the two connecting grooves (17), two ends of the bottom of the U-shaped rod (19) are positioned below the movable sleeve (18) and are respectively and rotatably connected with an L-shaped abutting rod (23) through a rotating shaft, two opposite ends of the bottom of the L-shaped abutting rod (23) are respectively positioned inside the movable groove (10) and are respectively and fixedly connected with the opposite sides of the two movable blocks (11), a mounting plate (24) is fixedly connected to the front surface of the top seat (7), a first groove (25) and a second groove (26) are sequentially formed on the front surface of the mounting plate (24) from top to bottom, the inner part of the first groove (25) is symmetrically and fixedly provided with inclined rods (27), the outer side wall of each inclined rod (27) is connected with a first sliding sleeve (28) in a sliding manner, the outer side wall of each first sliding sleeve (28) is fixedly connected with a connecting strip (29), the front end of each connecting strip (29) is fixedly connected with a first concave rotating piece (30), the inner part of each first concave rotating piece (30) is rotatably connected with a fixed block (31) through a rotating shaft, the front surfaces of the two fixed blocks (31) are fixedly connected with a placing plate (32) together, the lower part of the rear surface of the placing plate (32) is symmetrically and fixedly connected with a second concave rotating piece (33), the inner part of the second groove (26) is symmetrically and fixedly connected with rotating blocks (34), two opposite sides of the rotating blocks (34) are rotatably connected with a supporting plate (35), and T-shaped sliding grooves (36) are formed in the two sides of the supporting plate (35), the inside sliding connection of T shape spout (36) has T shape slider (37), two the equal fixedly connected with in the back of the body side of T shape slider (37) the spill rotates two (33), two liang front and back relative spill rotates between two (33) and rotates jointly and be connected with a connecting rod two (38).

2. A portable aid for music teaching according to claim 1 and further comprising: four corners of the lower surface of the base (1) are fixedly connected with universal wheels (40).

3. A portable aid for music teaching according to claim 1 and further comprising: limiting grooves (41) are symmetrically formed in the inner side wall of the vent hole (5), through grooves (42) are respectively formed in the outer side wall of the rubber plug (6) close to the two limiting grooves (41), round openings (43) are formed in the lower surface of the rubber plug (6), the two opposite sides of the through grooves (42) are communicated with the inside of the round openings (43), a hopper disc (44) is movably connected to the inside of the round openings (43), a first push rod (45) is fixedly connected to the top of the hopper disc (44), a second push rod (46) is symmetrically rotated at the top end of the first push rod (45) through a rotating shaft, a third push rod (47) is rotatably connected to the top ends of the two second push rods (46) through a rotating shaft, a limiting block (49) is fixedly connected to the back of the two third push rods (47) in the two through grooves (42), and the limiting block (49) is slidably connected with the through grooves (42), two the looks downside of stopper (49) all is provided with spring leaf (50), the strip groove of run-through (51), two are all seted up to the front surface of spring leaf (50) the back of the body side of stopper (49) is located two the equal fixedly connected with location nail (52) in inboard of strip groove (51), run-through's strip groove two (53), two are seted up on the right side of push rod three (47) the equal sliding connection in inboard of strip groove two (53) has cylinder (54), the both ends of cylinder (54) respectively with the inboard fixed connection of round mouth (43).

4. A portable aid for music teaching according to claim 1 and further comprising: the inner side wall of the mounting groove (8) is clamped with a clamping block (55), and the top of the clamping block (55) is located above the top seat (7) and fixedly connected with a filter screen (56).

5. A portable aid for music teaching according to claim 1 and further comprising: two ends of the inner side wall of the movable groove (10) are respectively and fixedly connected with a stop block (57).

6. A portable aid for music teaching according to claim 1 and further comprising: the outer side wall of the handle (15) is fixedly connected with a sponge sleeve (58).

7. A portable aid for music teaching according to claim 1 and further comprising: the bottom of the front surface and the bottom of the rear surface of the cam (16) are fixedly connected with balancing weights (59).

8. A portable aid for music teaching according to claim 1 and further comprising: the sliding rod (60) is fixedly connected to the upper portion of the front surface of the placing plate (32), a second sliding sleeve (61) slides symmetrically on the outer side wall of the sliding rod (60), and a pressing strip (62) is fixedly connected to the lower surface of the second sliding sleeve (61).

9. A portable aid for music teaching according to claim 1 and further comprising: the bottom of the front surface of the placing plate (32) is fixedly connected with an L-shaped bottom strip (63).

10. A portable aid for music teaching according to claim 1 and further comprising: the rear surface of the placing plate (32) is provided with a plurality of tooth grooves (39), and the top of the abutting plate (35) is integrally formed with a rack (48).

Technical Field

The invention relates to the technical field of music education, in particular to portable auxiliary equipment for music teaching.

Background

Music education means that all education which influences thought emotion, thinking quality and knowledge and skills of people through music mainly means that school music education is organized, planned and purposefully performed according to certain social requirements, but along with the development of the era, the music education is not limited to the interior of a school, a plurality of music education can be developed outdoors, therefore, auxiliary tools for teaching which are convenient to carry are needed frequently, music score teaching is used as a basis in the music teaching, corresponding music scores are placed on a specified placing device, teaching demonstration or practice is performed according to the music scores, and therefore the music score placing device is often used for the purpose.

The device is put to current music book is inconvenient to be adjusted the show angle according to user's user demand, and most adjustment is troublesome, and leads to the music book to place the unstability easily after the adjustment to inconvenient going to adjust the show height according to user's demand, and inconvenient carrying, we propose a music teaching with portable's auxiliary assembly for this.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides portable auxiliary equipment for music teaching, and solves the problems in the background.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a music teaching is with auxiliary assembly who conveniently carries, includes the base, the upper surface montant of base, the top fixedly connected with piston of montant, the outside of montant is located the top cover of base is equipped with the sleeve, the inside wall of sleeve with the outside wall of piston is laminated mutually, and with piston sliding connection, the sleeve is lower surface open-ended hollow cuboid structure, the upper surface of sleeve is seted up through-going air vent, the inner wall block of air vent has the rubber buffer, the top fixedly connected with footstock of sleeve, the upper surface of footstock is located set up through-going mounting groove, the bottom of mounting groove with the top of air vent is linked together, the top of rubber buffer is located the inner wall fixedly connected with closing cap of mounting groove, the front surface of closing cap is seted up through-going movable groove, the inner part of the movable groove is symmetrically and slidably connected with movable blocks, a first spring is fixedly connected between the opposite sides of the two movable blocks, the inner wall of the mounting groove is rotatably connected with a rotating rod, the right end of the rotating rod penetrates through the right side of the top seat and is fixedly connected with a connecting plate, the right side of the connecting plate is fixedly connected with a handle, the outer side wall of the rotating rod is positioned on the inner wall of the mounting groove and is fixedly connected with a cam, the left side and the right side of the cam are both provided with a connecting groove, the inner wall of the mounting groove is symmetrically and fixedly provided with movable sleeves, the inner walls of the two movable sleeves are jointly and slidably connected with a U-shaped rod, the top of the U-shaped rod is integrally formed with a first connecting rod, the top end of the first connecting rod is fixedly connected with a concave connecting piece, the inner wall of the concave connecting piece is symmetrically rotated with rollers, and the two rollers are respectively positioned inside the two connecting grooves, the connecting device is respectively connected with the two connecting grooves in a sliding manner, the two ends of the bottom of the U-shaped rod are positioned below the movable sleeve and are respectively connected with an L-shaped supporting rod in a rotating manner through a rotating shaft, the opposite ends of the bottom of the two L-shaped supporting rods are positioned in the movable groove and are respectively fixedly connected with the opposite sides of the two movable blocks, the front surface of the top seat is fixedly connected with a mounting plate, the front surface of the mounting plate is sequentially provided with a first groove and a second groove from top to bottom, the inner part of the first groove is symmetrically and fixedly provided with an inclined rod, the outer side wall of the inclined rod is slidably connected with a first sliding sleeve, the outer side wall of the first sliding sleeve is fixedly connected with a connecting strip, the front end of the connecting strip is fixedly connected with a first concave rotating piece, the inner part of the first concave rotating piece is rotatably connected with a fixed block through a rotating shaft, and the front surfaces of the two fixed blocks are fixedly connected with a placing plate together, the concave rotating pieces II are symmetrically and fixedly connected to the lower portion of the rear surface of the placing plate, the rotating blocks are symmetrically and fixedly connected to the inner portion of the groove II, the two opposite sides of the rotating blocks are rotatably connected with one abutting plate, T-shaped sliding grooves are formed in the two sides of the abutting plate, T-shaped sliding blocks are slidably connected to the inner portions of the T-shaped sliding grooves, the concave rotating pieces II are fixedly connected to the opposite sides of the two T-shaped sliding blocks, and two front and back opposite concave rotating pieces II are rotatably connected with one connecting rod II.

Preferably, four corners of the lower surface of the base are fixedly connected with universal wheels.

Preferably, the inner side wall of the vent hole is symmetrically provided with limiting grooves, the outer side wall of the rubber plug is respectively provided with a through groove near the two limiting grooves, the lower surface of the rubber plug is provided with a round opening, the opposite sides of the two through grooves are communicated with the inside of the round opening, the inside of the round opening is movably connected with a hopper disc, the top of the hopper disc is fixedly connected with a first push rod, the top end of the first push rod is symmetrically rotated by a rotating shaft to form a second push rod, the top ends of the two second push rods are respectively rotatably connected with a third push rod by a rotating shaft, the opposite ends of the two third push rods are positioned inside the two through grooves and are fixedly connected with limiting blocks, the limiting blocks are slidably connected with the through grooves, the opposite sides of the two limiting blocks are respectively provided with a spring piece, the front surface of the spring piece is provided with a first penetrating type strip-shaped groove, and the opposite sides of the two limiting blocks are positioned inside the two first strip-shaped grooves and are fixedly connected with positioning nails, the right side of the third push rod is provided with a second penetrating bar-shaped groove, two columns are connected to the inner sides of the second bar-shaped groove in a sliding mode, and two ends of each column are fixedly connected with the inner sides of the round openings respectively.

Preferably, the inside wall block of mounting groove has the block, the top of block is located the top fixedly connected with filter screen of footstock.

Preferably, both ends of the inner side wall of the movable groove are fixedly connected with check blocks respectively.

Preferably, the outer side wall of the handle is fixedly connected with a sponge sleeve.

Preferably, the bottom of the front surface and the bottom of the rear surface of the cam are both fixedly connected with balancing weights.

Preferably, a sliding rod is fixedly connected to the upper portion of the front surface of the placing plate, a sliding sleeve II is symmetrically arranged on the outer side wall of the sliding rod in a sliding mode, and pressing strips are fixedly connected to the lower surface of the sliding sleeve II.

Preferably, the bottom of the front surface of the placing plate is fixedly connected with an L-shaped bottom strip.

Preferably, the rear surface of the placing plate is provided with a plurality of tooth grooves, and the top of the abutting plate is integrally formed with a rack.

(III) advantageous effects

The invention provides portable auxiliary equipment for music teaching, which has the following beneficial effects:

(1) the invention can conveniently adjust the distance between the top seat and the base through the vertical rod, the piston and the sleeve, thereby adjusting the height of the placing plate according to different requirements of users, when in use, the piston slides in the sleeve to achieve the function of adjusting the height, the rubber plug plugs the vent hole to seal the sleeve, thereby preventing the piston from sliding in the sleeve, achieving the positioning effect, when adjusting the height, the handle is rotated to the upper part through holding the handle, the rotating rod in the installing groove is driven to rotate through the connection of the connecting plate, thereby driving the cam to rotate, wherein the concave connecting piece is connected with the connecting groove arranged on the cam through the inner roller, when the cam rotates, the U-shaped rod is driven to move upwards through the connection of the connecting rod I, thereby the L-shaped abutting rod which is connected with the lower part in a rotating way can be pulled upwards along the movable sleeve, make the L shape simultaneously to support the bottom of pole and can stimulate the movable block to slide along the movable groove, spring one is in tensile state this moment, thereby drive the rubber buffer of closing cap below and deviate from in the venthole, make the sleeve be in the state of ventilating, hold the handle at this moment and upwards carry out lifting or press the sleeve downwards, can reach the problem of adjustment height, the handle is loosened after the adjustment is accomplished, can stimulate the movable block to reset under the effect of spring one, thereby can stimulate L shape to support the pole decline, promote the rubber buffer block back vent hole of closing cap below, carry out the shutoff location.

(2) The invention is convenient to install the placing plate on the top seat by arranging the installing plate, thereby being convenient to place music scores, and the angle of the placing plate can be adjusted according to the requirement of a user, when the angle is adjusted, the placing plate is firstly lifted upwards along the inclined rod in the first groove by the sliding sleeve connected with the connecting strip, at the moment, the concave rotating piece II in the second groove is lifted upwards together with the T-shaped sliding block by the T-shaped sliding groove, after the placing plate is pulled to a certain distance, the resisting plate in the second groove can rotate by the rotating block and can be rotationally connected with the fixed block by the concave rotating piece I, and the placing plate is rotationally connected with the connecting rod II by the concave rotating piece II, thereby adjusting the inclination of the placing plate, then the resisting plate is propped against the rear part of the placing plate, thereby playing the role of supporting and positioning after the angle of the placing plate is adjusted, and the supporting mode is stable, the device is not easy to shake, and the components are convenient to store, so that the attractiveness is not affected.

(3) The invention utilizes the vertical rod, the piston and the sleeve, after the distance between the base and the top seat is adjusted, the rubber plug is plugged into the vent hole for blocking, thereby ensuring that the sleeve is in a sealing state without changing the telescopic state of the vertical rod and the sleeve, the round opening is arranged in the rubber plug, the funnel disc capable of sliding is arranged, when the top of the device is pressed by force carelessly, the funnel disc slides in the rubber plug to push the first push rod, the second push rod and the third push rod, because the push rod is limited by the cylinder through the second strip-shaped groove, the limit block can be horizontally pushed to move along the through groove, thereby the limit block is conveniently pushed to the inside of the limit groove, the rubber plug is limited, the top of the device is prevented from being pressed, the rubber plug is easily extruded by the air pressure in the sleeve, the problem of height change is caused, and after the limit block is clamped into the limit groove, the spring leaf can carry out elastic deformation through the slip between the bar groove one that sets up and the location nail to after the power that the device top was pressed disappears, the spring leaf can recover, thereby reverse promotion stopper, and because the weight of funnel dish self, make hopper dish, push rod one, push rod two and push rod three etc. resume original state, convenient next use.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of a vertical cross-sectional side view configuration of the present invention;

FIG. 3 is a schematic side view in vertical section of the piston and closure of the present invention;

FIG. 4 is a schematic front view of the stopper and the spring plate of the present invention;

FIG. 5 is a schematic view showing a coupling structure of the female coupling member and the drum according to the present invention;

FIG. 6 is an enlarged view of the structure at A of FIG. 2 according to the present invention;

fig. 7 is an enlarged view of the structure at B of fig. 2 according to the present invention.

In the figure: 1. a base; 2. a vertical rod; 3. a piston; 4. a sleeve; 5. a vent hole; 6. a rubber plug; 7. a top seat; 8. mounting grooves; 9. sealing the cover; 10. a movable groove; 11. a movable block; 12. a first spring; 13. rotating the rod; 14. a connecting plate; 15. a grip; 16. a cam; 17. connecting grooves; 18. a movable sleeve; 19. a U-shaped rod; 20. a first connecting rod; 21. a female connector; 22. a drum; 23. an L-shaped support rod; 24. mounting a plate; 25. a first groove; 26. a second groove; 27. a diagonal bar; 28. a first sliding sleeve; 29. a connecting strip; 30. a first concave rotating part; 31. a fixed block; 32. placing the plate; 33. a second concave rotating part; 34. rotating the block; 35. a resisting plate; 36. a T-shaped chute; 37. a T-shaped slider; 38. a second connecting rod; 39. a tooth socket; 40. a universal wheel; 41. a limiting groove; 42. a through groove; 43. a round mouth; 44. a funnel tray; 45. a first push rod; 46. a second push rod; 47. a third push rod; 48. a rack; 49. a limiting block; 50. a spring plate; 51. a first strip-shaped groove; 52. positioning nails; 53. a strip-shaped groove II; 54. a cylinder; 55. a clamping block; 56. a filter screen; 57. a stopper; 58. a sponge sleeve; 59. a balancing weight; 60. a slide bar; 61. a second sliding sleeve; 62. layering; 63. an L-shaped bottom strip.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 7, the present invention provides a technical solution: a portable auxiliary device for music teaching comprises a base 1, an upper surface vertical rod 2 of the base 1, a piston 3 is fixedly connected to the top end of the vertical rod 2, a sleeve 4 is sleeved on the outer side of the vertical rod 2, which is positioned above the base 1, the inner side wall of the sleeve 4 is attached to the outer side wall of the piston 3 and is in sliding connection with the piston 3, the sleeve 4 is of a hollow cuboid structure with an open lower surface, a through type vent hole 5 is formed in the upper surface of the sleeve 4, a rubber plug 6 is clamped on the inner wall of the vent hole 5, a top seat 7 is fixedly connected to the top of the sleeve 4, an upper surface of the top seat 7 is positioned in a through type mounting groove 8, the bottom of the mounting groove 8 is communicated with the top of the vent hole 5, a sealing cover 9 is fixedly connected to the inner wall of the top end of the rubber plug 6, which is positioned on the mounting groove 8, a through type movable groove 10 is formed in the front surface of the sealing cover 9, and a movable block 11 is symmetrically and slidably connected to the inside of the movable groove 10, fixedly connected with spring 12 between the opposite side of two movable blocks 11, the inner wall of mounting groove 8 rotates and is connected with dwang 13, the right-hand member of dwang 13 runs through the right side of footstock 7, and fixedly connected with connecting plate 14, the right side fixedly connected with handle 15 of connecting plate 14, the lateral wall of dwang 13 is located the inner wall fixedly connected with cam 16 of mounting groove 8, spread groove 17 has all been seted up on cam 16's left side and right side, the inner wall symmetry of mounting groove 8 is fixed with movable sleeve 18, the common sliding connection of the inner wall of two movable sleeves 18 has a U-shaped pole 19, the top integrated into one piece of U-shaped pole 19 has connecting rod 20, the top fixedly connected with spill connecting piece 21 of connecting rod 20, the inner wall symmetry of spill connecting piece 21 rotates there is cylinder 22, two cylinders 22 are located the inside of two spread grooves 17 respectively, and respectively with two spread groove 17 sliding connection, the bottom both ends of U-shaped pole 19 are located the below of movable sleeve 18 and all are connected with L shape through the pivot rotation and are supported pole 23 The opposite ends of the bottoms of the two L-shaped abutting rods 23 are respectively positioned in the movable groove 10 and are respectively fixedly connected with the opposite sides of the two movable blocks 11, the front surface of the top seat 7 is fixedly connected with a mounting plate 24, the front surface of the mounting plate 24 is sequentially provided with a first groove 25 and a second groove 26 from top to bottom, the inner part of the first groove 25 is symmetrically and fixedly provided with an inclined rod 27, the outer side wall of the inclined rod 27 is slidably connected with a first sliding sleeve 28, the outer side wall of the first sliding sleeve 28 is fixedly connected with a connecting strip 29, the front end of the connecting strip 29 is fixedly connected with a first concave rotating piece 30, the inner part of the first concave rotating piece 30 is rotatably connected with a fixed block 31 through a rotating shaft, the front surfaces of the two fixed blocks 31 are jointly and fixedly connected with a placing plate 32, the lower part of the rear surface of the placing plate 32 is symmetrically and fixedly connected with a second concave rotating piece 33, the inner part of the second groove 26 is symmetrically and fixedly connected with a rotating block 34, and a abutting plate 35 is rotatably connected between the opposite sides of the two rotating blocks 34, the two sides of the abutting plate 35 are respectively provided with a T-shaped sliding groove 36, the T-shaped sliding grooves 36 are connected with a T-shaped sliding block 37 in a sliding manner, the opposite sides of the two T-shaped sliding blocks 37 are respectively fixedly connected with a concave rotating piece two 33, and a connecting rod two 38 is connected between every two opposite concave rotating pieces two 33 in a rotating manner, the distance between the top seat 7 and the base 1 can be conveniently adjusted through the vertical rod 2, the piston 3 and the sleeve 4, so that the height of the placing plate 32 can be adjusted according to different requirements of users, when the height adjusting device is used, the piston 3 slides in the sleeve 4 to achieve the height adjusting effect, the rubber plug 6 plugs the vent hole 5 to seal the sleeve 4, so that the piston 3 can not slide in the sleeve 4 to achieve the positioning effect, when the height is adjusted, the handle 15 rotates to rotate to the upper side through holding the handle 15, the rotating rod 13 in the mounting groove 8 is driven to rotate through the connection of the connecting plate 14, thereby driving the cam 16 to rotate, wherein the concave connecting piece 21 is connected with the connecting groove 17 arranged on the cam 16 through the inner roller 22, when the cam 16 rotates, the connecting rod one 20 is connected to drive the U-shaped rod 19 to move upwards, thereby pulling the L-shaped abutting rod 23 which is connected with the lower part in a rotating way upwards along the movable sleeve 18, simultaneously, the bottom end of the L-shaped abutting rod 23 can pull the movable block 11 to slide along the movable groove 10, at the moment, the spring one 12 is in a stretching state, thereby driving the rubber plug 6 below the sealing cover 9 to be separated from the vent hole 5, causing the sleeve 4 to be in a ventilation state, at the moment, the handle 15 is held by hand to lift upwards or press the sleeve 4 downwards, thereby achieving the problem of height adjustment, after the adjustment is completed, the handle 15 is released, the spring one 12 can contract, the movable block 11 can be pulled to reset under the action of the spring one 12, thereby pulling the L-shaped abutting rod 23 to descend, the rubber stopper 6 below the sealing cover 9 is pushed to be clamped back to the vent hole 5 for plugging and positioning, the mounting plate 24 is arranged, the placing plate 32 is conveniently mounted on the top seat 7, so that a music book is conveniently placed, the angle of the placing plate 32 can be adjusted according to the requirements of a user, when the angle is adjusted, the placing plate 32 is lifted upwards along the inclined rod 27 in the first groove 25 through the first sliding sleeve 28 connected with the connecting strip 29, at the moment, the second concave rotating piece 33 in the second groove 26 can upwards move together through the T-shaped sliding groove 36 and the T-shaped sliding block 37, after the certain distance is pulled, the abutting plate 35 in the second groove 26 can rotate through the rotating block 34, meanwhile, the first concave rotating piece 30 can be rotatably connected with the fixed block 31, and the placing plate 32 is rotatably connected with the second connecting rod 38 through the second concave rotating piece 33, so that the gradient of the placing plate 32 can be adjusted, then support the rear of placing board 32 through supporting board 35 to can be after placing board 32 and transferring the angle, play the effect that supports the location, this kind of support mode is firm, is difficult for rocking, and conveniently accomodates the part, does not influence pleasing to the eye scheduling problem.

Further, the four equal fixedly connected with universal wheels 40 of corner of base 1's lower surface make things convenient for the whole shift position of device to conveniently carry.

Further, the inner side wall of the vent hole 5 is symmetrically provided with limiting grooves 41, the outer side wall of the rubber stopper 6 is provided with through grooves 42 near the two limiting grooves 41, the lower surface of the rubber stopper 6 is provided with round openings 43, the opposite sides of the two through grooves 42 are both communicated with the inside of the round openings 43, the inside of the round openings 43 is movably connected with a hopper disc 44, the top of the hopper disc 44 is fixedly connected with a first push rod 45, the top end of the first push rod 45 is symmetrically rotated by a rotating shaft to form a second push rod 46, the top ends of the second push rod 46 are both rotatably connected with a third push rod 47 by a rotating shaft, the opposite ends of the third push rods 47 are both fixedly connected with limiting blocks 49 inside the two through grooves 42, the limiting blocks 49 are slidably connected with the through grooves 42, the opposite sides of the two limiting blocks 49 are both provided with spring pieces 50, the front surfaces of the spring pieces 50 are both provided with penetrating type bar grooves 51, the opposite sides of the two limiting blocks 49 are both fixedly connected with positioning nails 52 inside the two bar grooves 51, the right side of the third push rod 47 is provided with a penetrating type strip-shaped groove II 53, the inner sides of the two strip-shaped grooves II 53 are both connected with a cylinder 54 in a sliding manner, two ends of the cylinder 54 are respectively fixedly connected with the inner side of the round opening 43, after the distance between the base 1 and the top seat 7 is adjusted by utilizing the vertical rod 2, the piston 3 and the sleeve 4, the vent hole 5 is plugged in through the rubber plug 6 to block, so that the sleeve 4 is ensured to be in a sealing state, the telescopic state of the vertical rod 2 and the sleeve 4 cannot be changed, the round opening 43 is arranged in the rubber plug 6, a slidable funnel disc 44 is arranged, when the top of the device is pressed forcibly carelessly, the funnel disc 44 slides inwards to push the first push rod 45, the second push rod 46 and the third push rod 47, and the third push rod 47 is limited by the cylinder 54 through the strip-shaped groove II 53, so that the limit block 49 can be pushed horizontally to move along the through groove 42, thereby conveniently promote stopper 49 to limiting groove 41 inside, thereby play limiting displacement to rubber buffer 6, prevent that the device top from receiving to press, easily lead to the inside atmospheric pressure of sleeve 4 to extrude rubber buffer 6, thereby lead to the problem of high change, and after stopper 49 card goes into limiting groove 41, the slip between strip shape groove 51 and the locating nail 52 of spring leaf 50 through setting up, elastic deformation can carry out, thereby after the power that the device top was pressed disappears, spring leaf 50 can recover, thereby reverse promotion stopper 49, and because the weight of hopper dish 44 self, make hopper dish 44, push rod 45, original state is resumeed such as push rod two 46 and push rod three 47, make things convenient for next use.

Further, the inside wall block of mounting groove 8 has block 55, and the top of block 55 is located the top fixedly connected with filter screen 56 of footstock 7, through block 55 block in the inboard of mounting groove 8 to can make things convenient for the dismantlement and the installation of filter screen 56, utilize filter screen 56 to filter dust etc. prevent that the dust from getting into mounting groove 8, and filter screen 56 is netted, does not influence the intercommunication of mounting groove 8 and external.

Furthermore, the both ends of the inner side wall of the movable groove 10 are fixedly connected with the stop blocks 57 respectively, so that the movable block 11 is prevented from being separated from the movable groove 10, and a blocking effect is achieved.

Furthermore, the sponge sleeve 58 is fixedly connected to the outer side wall of the handle 15, so that the handle is convenient to hold, and the hand is comfortable to hold and is not easy to slip.

Further, the equal fixedly connected with balancing weight 59 in front surface bottom and the rear surface bottom of cam 16 increases the weight of cam 16 bottom, ensures that the bottom of cam 16 can rotate to the state down under the normal condition, and cooperates one 12 pulling L shape of spring to support 23 and support closing cap 9, and the increase is to the conflict dynamics of closing cap 9, guarantees the block that rubber buffer 6 can stabilize in the inboard of air vent 5.

Further, place the front surface top fixedly connected with slide bar 60 of board 32, the lateral wall symmetry of slide bar 60 slides and has two 61 of sliding sleeve, and the lower fixed surface of two 61 of sliding sleeve is connected with layering 62, and two layering 62 can be through the slide bar 60 and the two 61 of sliding sleeve that set up, the adjustment interval to the size after convenient more music book is opened is adjusted, pushes down the music book both sides respectively through two layering 62, makes things convenient for the music book to expand and supplies the user to watch the use.

Further, the front surface bottom fixedly connected with L shape end strip 63 of placing board 32 contacts with the music book bottom of placing on board 32, plays the effect of bearing to the music book, prevents the music book landing.

Furthermore, a plurality of tooth sockets 39 are formed in the rear surface of the placing plate 32, a rack 48 is integrally formed at the top of the abutting plate 35, and when the abutting plate 35 abuts against the rear surface of the placing plate 32 and supports the placing plate 32 to be inclined, the bottom abutting plate 35 is more stably supported through the matching of the rack 48 and the tooth sockets 39, so that the problem of slipping is not easily caused during supporting.

In conclusion, the working process of the invention is as follows: the invention can conveniently adjust the distance between the top seat 7 and the base 1 through the vertical rod 2, the piston 3 and the sleeve 4, thereby adjusting the height of the placing plate 32 according to different requirements of users, when in use, the piston 3 slides in the sleeve 4 to achieve the effect of adjusting the height, the vent hole 5 is plugged by the rubber plug 6, the sleeve 4 is sealed, thereby the piston 3 can not slide in the sleeve 4, thereby achieving the effect of positioning, when in height adjustment, the handle 15 is rotated by holding the handle 15, the handle 15 is rotated to the upper part, the rotating rod 13 in the mounting groove 8 is driven to rotate through the connection of the connecting plate 14, thereby driving the cam 16 to rotate, wherein the concave connecting piece 21 is connected with the connecting groove 17 arranged on the cam 16 through the inner roller 22, when the cam 16 rotates, the U-shaped rod 19 is driven to move upwards through the connection of the connecting rod one 20, thereby pulling the L-shaped abutting rod 23 which is connected with the L-shaped abutting rod in a rotating way downwards upwards along the movable sleeve 18, simultaneously pulling the movable block 11 to slide along the movable groove 10 by the bottom end of the L-shaped abutting rod 23, at the moment, the first spring 12 is in a stretching state, thereby driving the rubber plug 6 below the sealing cover 9 to be separated from the vent hole 5, leading the sleeve 4 to be in a ventilation state, holding the handle 15 by hand at the moment, lifting upwards or pressing the sleeve 4 downwards, thereby achieving the problem of height adjustment, loosening the handle 15 after the adjustment is finished, contracting the first spring 12, pulling the movable block 11 to reset under the action of the first spring 12, thereby pulling the L-shaped abutting rod 23 to descend, pushing the rubber plug 6 below the sealing cover 9 to be clamped back to the vent hole 5 for plugging and positioning, and further arranging the mounting plate 24 to facilitate mounting the placing plate 32 on the top seat 7, thereby facilitating placing of music scores, and adjusting the angle of the placing plate 32 according to the requirements of users, when the angle is adjusted, the first sliding sleeve 28 connected with the placing plate 32 through the connecting strip 29 is lifted upwards along the inclined rod 27 in the first groove 25, at the moment, the second concave rotating piece 33 in the second groove 26 can move upwards together through the T-shaped sliding groove 36 and the T-shaped sliding block 37, after the certain distance is pulled, the abutting plate 35 in the second groove 26 can rotate through the rotating block 34, meanwhile, the first concave rotating piece 30 and the fixed block 31 can be rotatably connected, the placing plate 32 is rotatably connected with the second connecting rod 38 through the second concave rotating piece 33, the inclination of the placing plate 32 can be adjusted, and then the abutting plate 35 abuts against the rear side of the placing plate 32, so that the supporting and positioning effects can be achieved after the angle of the placing plate 32 is adjusted, the supporting mode is stable and not prone to shaking, the components are convenient to be stored, and the problems of attractiveness and the like are not affected.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.