阅读说明：本技术 四面翻广告门 (Four-side turning advertisement door ) 是由 刘建国 陈森 于 2021-08-25 设计创作，主要内容包括：本发明涉及一种四面翻广告门,包括主立柱组件、门体机构和副立柱组件,门体机构安装在主立柱组件上,主立柱组件内部设置机芯,机芯可控制门体机构整体的开门和关门,门体机构包括上横梁、下横杆和门框组件,门框组件为一个固定框架结构,在上横杆和下横杆之间设置一排菱形叶片组件,菱形叶片组件包括多组依次排列的菱形叶片单元,每组菱形叶片单元包括横截面为菱形结构的叶片主体和设置在叶片主体下端的连接转轴组件,叶片主体的四个面均贴设广告画面,叶片主体的一个内角度数记为α度,90°≤α＜180°,叶片翻转机构可同步驱动多组菱形叶片单元以α度和-α度正反向往复旋转,实现广告门正反两个展示面的各两幅广告画面的交替展示。(The invention relates to a four-side turning advertising door, which comprises a main upright post component, a door body mechanism and an auxiliary upright post component, wherein the door body mechanism is arranged on the main upright post component, a machine core is arranged in the main upright post component and can control the door opening and closing of the whole door body mechanism, the door body mechanism comprises an upper cross beam, a lower cross beam and a door frame component, the door frame component is of a fixed frame structure, a row of rhombic blade components are arranged between the upper cross beam and the lower cross beam, each rhombic blade component comprises a plurality of groups of rhombic blade units which are sequentially arranged, each group of rhombic blade units comprises a blade main body with a rhombic structure in cross section and a connecting rotating shaft component arranged at the lower end of the blade main body, advertising pictures are pasted on four sides of the blade main body, one internal angle of the blade main body is recorded as alpha, alpha is more than or equal to 90 degrees and less than 180 degrees, the blade turning mechanism can synchronously drive the plurality of rhombic blade units to reversely rotate in a reciprocating mode at the alpha degree and-alpha degree, the alternative display of two advertisement pictures on the front and back display surfaces of the advertisement door is realized.)

1. Four-side turning advertisement door, comprising a main upright post component (1), a door body mechanism (2) and an auxiliary upright post component (3), wherein the door body mechanism (2) is installed on the main upright post component (1), a machine core is arranged in the main upright post component (1), the machine core can control the door body mechanism (2) to integrally open and close the door, the door body mechanism (2) comprises an upper cross beam (201), a lower cross beam (203) and a door frame component (204), the door frame component (204) is a fixed frame structure, the upper cross beam (201) and the lower cross beam (203) are arranged in the door frame component (204), the four-side turning advertisement door is characterized in that a row of diamond-shaped blade components (202) are arranged between the upper cross beam (201) and the lower cross beam (203), each diamond-shaped blade component (202) comprises a plurality of groups of diamond-shaped blade units which are arranged in sequence, each group of diamond-shaped blade units comprises a blade main body (221) with a diamond-shaped cross section and a connecting rotating shaft component arranged at the lower end of the blade main body (221), the four surfaces of the blade main body (221) are all provided with advertisement pictures, one internal angle of the blade main body (221) is recorded as alpha, alpha is more than or equal to 90 degrees and less than 180 degrees, the blade turnover mechanism can synchronously drive a plurality of groups of rhombic blade units to rotate forward and backward in a reciprocating mode at alpha and-alpha degrees, and alternate display of two advertisement pictures on the forward and backward display surfaces of the advertisement door is realized.

2. The four-sided advertising door as claimed in claim 1, wherein a light-transmitting fixed door (207) is provided outside the door frame assembly (204) where the diamond blade assembly (202) is disposed and the front and back display surfaces are disposed.

3. The four-side-turning advertising door as claimed in claim 1 or 2, wherein the connecting rotary shaft assembly comprises a lower connecting base (222), a lower rotary shaft (223), a plug (224) and a pressure spring (225), the lower connecting base (222) is provided at the lower end of the blade body (221), one end of the lower rotary shaft (223) is inserted into the lower connecting base (222) and can slide up and down relative thereto, the other end thereof is inserted into an upper lower rotary base (226) of the lower cross bar assembly (203), and a dust cover is provided on the lower rotary base; the plug (224) is connected with the lower connecting seat (222) through a snap fastener mechanism; the pressure spring (225) is arranged in the lower connecting seat (222), one end of the pressure spring is pressed at the lower end of the plug (224), the other end of the pressure spring is pressed on the lower rotating shaft (223), and the lower rotating shaft (223) is always tightly propped against the lower rotating seat (226) of the lower cross rod assembly (203) under the action of the rebounding force of the pressure spring (225).

4. The four-side turning advertising door as claimed in claim 3, wherein the blade turning mechanism is a geneva gear mechanism, the geneva gear mechanism is arranged in the upper cross bar (201) and comprises a power mechanism (212), a long rotating shaft (211) and a plurality of geneva gear mechanism units connected to the long rotating shaft (211), each geneva gear mechanism unit is connected with one diamond-shaped blade unit; the power mechanism (212) is fixed at the end part of the upper cross rod (201), an output shaft of the power mechanism is connected with a long rotating shaft (211), and a plurality of groups of long keys are arranged on the long rotating shaft (211); the sheave drive mechanism unit includes a primary engagement sheave (213), a primary engagement sheave holder (214), and a secondary engagement sheave (215); the main meshing wheel disc seat (214) is arranged in the upper cross rod (201), a plurality of groups of main meshing wheel discs (213) are sequentially arranged on the long rotating shaft (211) in a penetrating mode and are clamped through a long key of the long rotating shaft (211), and the lower end of the auxiliary meshing wheel (215) is connected with the upper end of the rhombic blade unit; the main meshing wheel disc (213) is provided with a disc with an opening, the opening of the disc is provided with a convex tooth, the auxiliary meshing sheave (215) comprises a base and a groove part which is arranged on the base and provided with two wings, the center of the groove part is provided with a groove, two sides of the groove part are limiting vertical surfaces, and the convex tooth of the main meshing wheel disc (213) extends into the groove to drive the auxiliary meshing sheave (215) to rotate; when the rotation angle of the auxiliary meshing sheave (215) is larger than alpha degrees, the disc of the main meshing wheel disc (213) is clamped with the limiting vertical surface, and at the moment, the main meshing wheel disc (213) cannot rotate continuously.

5. The four-side turning advertising door as claimed in claim 3, wherein the blade turning mechanism is a rack and pinion transmission structure, which is arranged in the upper cross bar (201) and comprises a power mechanism (212), a passive rack (216), a transmission rack (217), a connecting bar (218) and a plurality of sets of passive gear assemblies (219); the power mechanism (212) is fixed at the end part of the upper cross rod (201), the driven rack (216) is connected with the transmission rack (217) through the connecting strip (218), the power mechanism (212) drives the driven rack (216) to further drive the transmission rack (217) to move left and right, a plurality of groups of driven gear assemblies (219) are sequentially arranged on one side of the transmission rack (217), each driven gear assembly (219) comprises a gear seat (2101), a driven gear (2102), a driven rotating shaft and two bearings, the driven rotating shaft is fixedly arranged in the center of the driven gear (2102), the lower end of the driven rotating shaft is connected with the upper end of the rhombic blade unit, the driven rotating shaft is installed on the gear seat (2101) through the upper bearing and the lower bearing, the driven gear (2102) is meshed with the transmission rack (217), and the driven gear (2102) is driven to rotate through the movement of the transmission rack (217).

6. The four-side turning advertising door as claimed in claim 3, wherein the blade turning mechanism is a bevel gear transmission mechanism, the bevel gear transmission mechanism is arranged in the upper cross bar (201), and comprises a power mechanism (212), a transmission shaft (2105), a driving bevel gear (2106) and a driven bevel gear assembly (2107); the power mechanism (212) is fixed at the end part of the upper cross rod (201) and drives the transmission shafts (2105) to rotate, a plurality of driving bevel gears (2106) are respectively arranged on one transmission shaft (2105), the lower ends of the driven bevel gear assemblies (2107) are connected with the upper ends of the rhombic blade units, and each driving bevel gear (2106) is meshed with one group of driven bevel gear assemblies (2107).

7. The four-side turning advertising door as claimed in claims 3-5, wherein a telescopic rod assembly (205) is arranged on one side of the door frame assembly (204), an electromagnetic lock (206) is arranged on the telescopic rod assembly (205), the electromagnetic lock (206) can be attracted with the auxiliary upright post assembly (3), and a card reader for controlling the electromagnetic lock (206) is arranged on the auxiliary upright post assembly (3).

Technical Field

The invention belongs to the technical field of banisters, and particularly relates to a four-side turning advertising door.

Background

Along with the continuous development and progress of society, the living standard of people is improved, and advertising companies move traditional ground media to residential districts and commercial blocks in the development and propagation of new media, so that advertising doors are produced; due to the advantages of strong consumption capability of audiences, strong visual impact of advertisement pictures, mandatory display and the like, the advertisement picture is widely applied in recent years.

At present, the most common advertising doors in the market are advertising doors with fixed pictures, the advertising pictures are still, visual fatigue is easy to occur to people, only two advertisements can be pasted on the front side and the rear side of each advertising door at a time, and the number of advertising propaganda is small.

Disclosure of Invention

The invention provides a four-side-turning advertising door, which solves the problems that the advertising door in the prior art has few advertising display surfaces, a complex transmission mechanism of the advertising door, easy failure and the like.

The technical scheme adopted by the invention is as follows:

a four-side turning advertising door comprises a main upright post component, a door body mechanism and an auxiliary upright post component, wherein the door body mechanism is arranged on the main upright post component, a machine core is arranged in the main upright post component and can control the door body mechanism to integrally open and close, the door body mechanism comprises an upper cross beam, a lower cross beam and a door frame component, the door frame component is of a fixed frame structure, the upper cross beam and the lower cross beam are arranged in the door frame component, a row of rhombic blade components are arranged between the upper cross beam and the lower cross beam, each rhombic blade component comprises a plurality of groups of rhombic blade units which are sequentially arranged, each group of rhombic blade units comprises a blade main body with a rhombic cross section and a connecting rotating shaft component arranged at the lower end of the blade main body, advertising pictures are pasted on four sides of the blade main body, one inner angle of the blade main body is marked as alpha, alpha is more than or equal to 90 degrees and less than or equal to 180 degrees, and the blade turning mechanism can synchronously drive the plurality of rhombic blade units to rotate in a forward and reverse reciprocating manner, the alternative display of two advertisement pictures on the front and back display surfaces of the advertisement door is realized.

Furthermore, a transparent fixed door is arranged outside the door frame assembly where the front display surface and the back display surface of the diamond-shaped blade assembly are located.

Furthermore, the connecting rotating shaft assembly comprises a lower connecting seat, a lower rotating shaft, a plug and a pressure spring, the lower connecting seat is arranged at the lower end of the blade main body, one end of the lower rotating shaft is inserted into the lower connecting seat and can slide up and down relative to the lower connecting seat, the other end of the lower rotating shaft is inserted into a lower rotating seat arranged on the lower cross rod assembly, and a dust cover is arranged on the lower rotating seat; the plug is connected with the lower connecting seat through a snap fastener mechanism; the pressure spring is arranged in the lower connecting seat, one end of the pressure spring is pressed at the lower end of the plug, the other end of the pressure spring is pressed on the lower rotating shaft, and the lower rotating shaft is always tightly propped against the lower rotating seat of the lower cross rod assembly under the action of the rebounding force of the pressure spring.

Furthermore, the blade turnover mechanism is a sheave transmission mechanism, the sheave transmission mechanism is arranged in the upper cross rod and comprises a power mechanism, a long rotating shaft and a plurality of groups of sheave driving mechanism units connected to the long rotating shaft, and each group of sheave driving mechanism units is connected with one group of rhombic blade units; the power mechanism is fixed at the end part of the upper cross rod, an output shaft of the power mechanism is connected with a long rotating shaft, and a plurality of groups of long keys are arranged on the long rotating shaft; the sheave driving mechanism unit comprises a main meshing wheel disc, a main meshing wheel disc seat and an auxiliary meshing sheave; the main meshing wheel disc seat is arranged in the upper cross rod, a plurality of groups of main meshing wheel discs sequentially penetrate through the long rotating shaft and are clamped through a long key of the long rotating shaft, and the lower end of the auxiliary meshing sheave is connected with the upper end of the rhombic blade unit; the main meshing wheel disc is provided with a disc with an opening, the opening of the disc is provided with a convex tooth, the auxiliary meshing sheave comprises a base and a groove part with two wings, the groove part is arranged on the base, the center of the groove part is provided with a groove, two sides of the groove part are limiting vertical surfaces, and the convex tooth of the main meshing wheel disc extends into the groove to drive the auxiliary meshing sheave to rotate; when the rotation angle of the auxiliary meshing grooved wheel is larger than alpha degrees, the disc of the main meshing wheel disc is clamped with the limiting vertical surface, and at the moment, the main meshing wheel disc cannot rotate continuously.

Furthermore, the blade turnover mechanism is a gear and rack transmission structure, the gear and rack transmission structure is arranged in the upper cross rod and comprises a power mechanism, a driven rack, a transmission rack, a connecting strip and a plurality of groups of driven gear assemblies; the end part of the upper transverse rod is fixed by the power mechanism, the driven rack is connected with the transmission rack through the connecting strip, the power mechanism drives the driven rack to move left and right through driving the driven rack, a plurality of groups of driven gear assemblies are sequentially arranged on one side of the transmission rack, each driven gear assembly comprises a gear seat, a driven gear, a driven rotating shaft and two bearings, the driven rotating shaft is fixedly arranged in the center of the driven gear, the lower end of the driven rotating shaft is connected with the upper end of the rhombic blade unit, the driven rotating shaft is installed on the gear seat through the upper bearing and the lower bearing, the driven gear is meshed with the transmission rack, and the driven gear is driven to rotate through the movement of the transmission rack.

Furthermore, the blade turnover mechanism is a bevel gear transmission structure, the bevel gear transmission mechanism is arranged in the upper cross rod and comprises a power mechanism, a transmission shaft, a driving bevel gear and a driven bevel gear assembly; the power mechanism is fixed at the end part of the upper cross rod and drives the transmission shafts to rotate, a plurality of driving bevel gears are arranged on one transmission shaft respectively, the lower ends of the driven bevel gear assemblies are connected with the upper ends of the rhombic blade units, and each driving bevel gear is meshed with one group of driven bevel gear assemblies.

Furthermore, a telescopic rod assembly is arranged on one side of the door frame assembly in a penetrating mode, an electromagnetic lock is arranged on the telescopic rod assembly, the electromagnetic lock can be attracted with the auxiliary stand column assembly, and a card swiping device for controlling the electromagnetic lock is arranged on the auxiliary stand column assembly.

Compared with the prior art, the invention has the following beneficial effects:

1. the blade unit has a rhombic cross section and comprises four adhered advertisement surfaces, the blade turnover mechanism drives the row of blade assemblies to intermittently rotate in a forward and reverse reciprocating manner, the effect of alternately displaying four advertisement pictures of the row of rhombic blade assemblies is realized, and the problems that the existing advertisement door is few in display surface and only has two fixed advertisement pictures at the front and the back are solved.

2. The blade turnover mechanism comprises three groups of different driving forms, and the blade turnover mechanism has the advantages of simple structure, convenience in mounting and dismounting, stability and reliability in operation, convenience in mounting and maintenance, lower manufacturing and using cost and very high practical value.

Drawings

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

FIG. 2 is a perspective assembly view of the present invention;

FIG. 3 is a schematic cross-sectional view of a diamond blade assembly according to the present invention;

fig. 4 is a perspective assembly schematic of a sheave transmission structure according to embodiment 1 of the present invention;

FIG. 5 is a schematic diagram of a sheave drive according to embodiment 1 of the present invention;

fig. 6 is an assembled sectional view of a sheave drive structure according to embodiment 1 of the present invention;

fig. 7 is a schematic structural view of a secondary engagement sheave of the present invention;

FIG. 8 is a schematic cross-sectional view of a blade body of the present invention;

FIG. 9 is a schematic diagram illustrating the rotation of the diamond blade assembly according to the present invention;

FIG. 10 is a schematic view of a rack and pinion driven upper crossbar assembly of embodiment 2 of the present invention;

fig. 11 is a gear rack drive schematic diagram of embodiment 2 of the invention;

fig. 12 is a schematic structural view of a bevel gear transmission according to embodiment 3 of the present invention;

fig. 13 is a schematic view of the bevel gear structure and the diamond-shaped blade assembly according to embodiment 3 of the present invention.

In the figure, the position of the upper end of the main shaft,

1-a main upright post assembly;

2-a door body mechanism;

201-upper cross bar, 202-diamond blade assembly, 203-lower cross bar, 204-doorframe assembly, 205-telescopic rod assembly, 206-electromagnetic lock, 207-light-transmitting fixed door;

211-a long rotating shaft, 212-a power mechanism, 213-a primary meshing wheel disc, 214-a primary meshing wheel disc seat, 215-a secondary meshing sheave, 216-a driven rack, 217-a transmission rack, 218-a connecting strip, 219-a driven gear assembly;

2101-gear seat, 2102-driven gear, 2105-transmission shaft, 2106-driving bevel gear, 2107-driven bevel gear assembly;

221-a blade main body, 222-a lower connecting seat, 223-a lower rotating shaft, 224-a plug, 225-a pressure spring and 226-a lower rotary seat;

3-auxiliary column component.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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.

The basic idea of the invention is to realize the alternate display of four advertisement pictures on both sides of the advertisement door through the design of the diamond-shaped blades.

Example 1:

grooved wheel transmission type four-side turning advertising door

As shown in fig. 1, the four-side-turning advertising door of the present invention comprises a main pillar assembly 1, a door body mechanism 2 and an auxiliary pillar assembly 3, wherein the main pillar assembly 1 is a power output part, and is connected with the wide door body mechanism 2, such that the door body mechanism 2 can rotate relative to the main pillar assembly 1 to complete door opening and closing actions; the auxiliary stand column component 3 plays a door closing limiting role, the door body mechanism 2 is closed in place and then is attracted with the door body mechanism, the door is prevented from being opened by external force, the card reader for controlling the electromagnetic lock 206 is arranged on the auxiliary stand column component 3, and the identity of people who come in and go out is convenient to confirm.

As shown in fig. 2, the door body mechanism 2 includes an upper cross bar 201, a row of diamond-shaped blade assemblies 202, a lower cross bar 203, a door frame assembly 204, a telescopic rod assembly 205 and an electromagnetic lock 206; the door frame assembly 204 is a fixed frame structure and is connected with the main upright post assembly 1, and the door body mechanism 2 can rotate relative to the main upright post assembly 1 to complete door opening and closing actions; an upper cross rod 201 is fixedly arranged at the upper end in the door frame assembly 204, a lower cross rod 203 is fixedly arranged at the lower end in the door frame assembly 204, and two ends of the rhombic blade assembly 202 are respectively connected with the upper cross rod 201 and the lower cross rod assembly 203; one side of the door frame component 204 is penetrated with the telescopic rod component 205, and the width of the door can be adjusted according to the width of the channel; a light-transmitting fixed door 207 is arranged outside the door frame assembly 204 on both sides of the display surface of the diamond-shaped blade assembly 202; the rhombic blade assembly 202 comprises a plurality of groups of rhombic blade units which are sequentially arranged, each group of rhombic blade units comprises a blade main body 221 with a rhombic cross section and a connecting rotating shaft assembly arranged at the lower end of the blade main body 221, the blade main body 221 is of a hollow rhombic column structure, the cross section of the blade main body is rhombic, and advertisement pictures are attached to four surfaces of the blade main body; one inner angle degree of the blade main body 221 is recorded as alpha degree, alpha is more than or equal to 90 degrees and less than 180 degrees, in the embodiment, alpha is 120 degrees, the blade overturning mechanism can synchronously drive a plurality of groups of rhombic blade units to rotate forward and backward in 120 degrees and-120 degrees in a reciprocating manner, and the alternate display of four advertisement pictures on two display surfaces of the advertisement door is realized.

As shown in fig. 3, the diamond-shaped blade assembly 202 includes a plurality of diamond-shaped blade units, each of which includes a blade main body 221, a lower connecting seat 222, a lower rotating shaft 223, a plug 224, a pressure spring 225 and a lower rotating seat 226; the lower connecting seat 222 is arranged at the lower end of the blade main body 221, one end of the lower rotating shaft 223 is inserted into the lower connecting seat 222 and can slide up and down relative to the lower connecting seat 222, the other end of the lower rotating shaft 223 is inserted into a lower rotating seat 226 arranged on the lower cross rod assembly 203, and the plug 224 is connected with the lower connecting seat 222 through a snap fastener mechanism; the compression spring 225 is arranged in the lower connecting seat 222, one end of the compression spring 225 is pressed at the lower end of the plug 224, the other end of the compression spring is pressed on the lower rotating shaft 223, and the lower rotating shaft 223 is always tightly pressed against the lower rotating seat 226 of the lower cross rod assembly 203 under the action of the rebounding force of the compression spring 225, so that the disassembly, assembly and maintenance are convenient.

A plurality of round holes are formed in the lower cross rod assembly 203, the lower swivel bases 226 are arranged in the round holes, and the lower swivel shafts 223 are always tightly propped against the lower swivel bases 226 under the action of the elastic force of the pressure springs 225, so that the rhombic blade units are prevented from falling off due to the change of the distance between the upper cross rods 201 and the lower cross rod assembly 203.

As shown in fig. 4, the blade turning mechanism is a sheave transmission mechanism, is arranged in the upper cross bar 201, and comprises a power mechanism 212, a long rotating shaft 211 and a plurality of sheave drive mechanism units connected to the long rotating shaft 211, wherein each sheave drive mechanism unit is connected to a diamond-shaped blade unit; the power mechanism 212 is fixed at the end of the upper cross bar 201, the output shaft thereof is connected with the long rotating shaft 211, and a plurality of groups of long keys are arranged on the long rotating shaft 211; the sheave drive mechanism unit includes a primary engagement sheave 213, a primary engagement sheave holder 214, and a secondary engagement sheave 215; the main meshing wheel disc seat 214 is arranged in the upper cross rod 201, and a plurality of groups of main meshing wheel discs 213 sequentially penetrate through the long rotating shaft 211 and are clamped by a long key of the long rotating shaft 211 to synchronously rotate along with the long rotating shaft 211; the lower end of the secondary meshing sheave 215 is connected with the upper end of the rhombic blade unit, and the upper end thereof is connected with the main meshing wheel disc seat 214 and can rotate relative to the main meshing wheel disc seat; referring to fig. 5 to 7, the primary engagement wheel disc 213 is provided with a disc with an opening, a convex tooth is provided at the opening of the disc, the secondary engagement sheave 215 includes a disc-shaped base and a groove member with two wings, which is provided on the base, a groove is provided at the center of the groove member, two sides of the groove member are limit vertical surfaces, and the convex tooth of the primary engagement wheel disc 213 can extend into the groove to drive the secondary engagement sheave 215 to rotate; when the rotation angle of the disc of the primary engagement wheel disc 213 reaches α degrees (120 degrees in this embodiment) at the secondary engagement sheave 215, the disc is parallel to the limit plane of the secondary engagement sheave 215, that is, switching of advertisement pictures is required; when the rotation angle of the secondary engagement sheave 215 is greater than α degrees (120 degrees in this embodiment), the disc of the primary engagement sheave 213 is locked to the vertical limiting surface, and at this time, the primary engagement sheave 213 cannot rotate continuously, but the power mechanism 212 rotates in the reverse direction by the reverse driving force.

Referring to fig. 8, the cross section of the blade body 901 is a rhombus, the obtuse angle of the blade body is α (in this embodiment, α is 120 degrees), the acute angle adjacent to the obtuse angle is 180- α, the front and rear display surfaces of the blade are A, B surfaces, and the display surface hidden inside is C, D surfaces; referring to fig. 9(a), the power mechanism 212 drives the rhombic blade assembly 9 to rotate by α degrees, referring to fig. 9(b), and the front and rear display surfaces are switched to C, D surfaces;

similarly, the power mechanism drives the blade to rotate in the reverse direction by alpha degrees, and the front and rear display surfaces are switched back to A, B surfaces; in this way, the power mechanism 212 intermittently drives the moving blade to rotate forward and backward by α degrees, so as to realize the alternate display of four advertisement pictures.

Example 2:

gear rack transmission type four-side turning advertisement door

As shown in fig. 10, unlike embodiment 1, a rack and pinion driven blade overturning mechanism is provided in the upper cross bar 201, and includes a power mechanism 212, a driven rack 216, a driving rack 217, a connecting bar 218, and a plurality of sets of driven gear assemblies 219; the power mechanism 212 is fixed at the end of the upper cross bar 201, the driven rack 216 is connected with the transmission rack 217 through the connecting strip 218, the power mechanism 212 drives the driven rack 216 to further drive the transmission rack 217 to move left and right in a reciprocating manner, and a plurality of groups of driven gear assemblies 219 are sequentially arranged on one side of the transmission rack 217.

As shown in fig. 11, the driven gear assembly 219 includes a gear seat 2101, a driven gear 2102, a driven rotating shaft, and two bearings, the driven rotating shaft is fixedly disposed in the center of the driven gear 2102, the lower end of the driven rotating shaft is connected with the upper end of the rhombic vane unit, the driven rotating shaft is mounted on the gear seat 2101 through the upper and lower bearings, and the driven gear 2102 is engaged with the transmission rack 217.

The movement of the driving rack 217 can drive the driven gear 2102 to rotate intermittently by α degrees and- α degrees (in this embodiment, α is 120 degrees), so that the four advertisement pictures can be alternately displayed.

Example 3:

bevel gear transmission type four-side turning advertisement door

As shown in fig. 12, unlike embodiment 1, a bevel-gear-driven blade turning mechanism is provided in the upper cross bar 201, and includes a power mechanism 212, a transmission shaft 2105, a driving bevel gear 2106, and a driven bevel gear assembly 2107; the power mechanism 212 is fixed at the end of the upper cross bar 201 and drives the transmission shafts 2105 to rotate, and a plurality of driving bevel gears 2106 are respectively arranged on one transmission shaft 2105.

As shown in fig. 13, the lower end of the passive bevel gear assembly 2107 is connected to the upper end of the diamond-shaped blade unit, and each passive bevel gear assembly 2107 is engaged with one driving bevel gear 2106 to drive the diamond-shaped blade unit to rotate by α degrees and- α degrees (in this embodiment, α is 120 degrees) each time, so that the four advertisement pictures can be alternately displayed.

The above are specific embodiments of the present invention, but the structural features of the present invention are not limited thereto, and the present invention can be applied to similar products, and any changes or modifications within the scope of the present invention by those skilled in the art are covered by the claims of the present invention.