CN110537805A

CN110537805A - Display rack

Info

Publication number: CN110537805A
Application number: CN201910913763.8A
Authority: CN
Inventors: 姚康水; 黄伟青; 梁建科; 肖飞
Original assignee: Comba Telecom Technology Guangzhou Ltd; Comba Telecom Systems China Ltd; Comba Telecom Systems Guangzhou Co Ltd; Tianjin Comba Telecom Systems Co Ltd
Current assignee: Comba Telecom Technology Guangzhou Ltd; Comba Telecom Systems Guangzhou Co Ltd
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2019-12-06
Anticipated expiration: 2039-09-25

Abstract

The invention provides a display rack which comprises a base and a turnover mechanism arranged on the base, wherein the turnover mechanism comprises an installation component, a worm wheel, a worm and a driving component, the installation component is arranged on the base, can rotate relative to the base and is used for installing a product to be displayed, the worm wheel is connected with the installation component, the worm is arranged on the base and is meshed with the worm wheel, and the driving component is circumferentially fixed with the end part of the worm. The turnover mechanism of the display rack provided by the invention can turn over the product to be displayed through the transmission of the worm wheel and the worm, and the worm wheel and the worm have a larger transmission ratio, so that the product to be displayed which is large in volume and heavy can be driven to turn over in a relatively labor-saving manner, and the product to be displayed can be kept in a hovering state at any angle through the self-locking performance that the worm wheel and the worm can not be reversely transmitted, so that the product to be displayed is prevented from rotating under the action of self weight or pushing and pressing by external force, the display effect is ensured, and the safety is ensured.

Description

display rack

Technical Field

The invention relates to the technical field of propaganda and display articles, in particular to a display stand.

Background

At present, when a process prototype of a base station antenna is displayed, the base station antenna is usually required to be placed on a display platform and can reach a proper display angle after actions such as manual carrying, overturning and the like, so that structures at different positions of the base station antenna and process bright spots of the base station antenna are displayed for customers.

However, for a base station antenna with a large size and a heavy weight, multiple persons are generally required to cooperate to complete the actions of moving, turning and the like of the base station antenna, and the base station antenna is difficult to support and fix after being turned to a proper display angle, so that the operation is very inconvenient, time and labor are wasted, and the display effect is not good. Secondly, through artifical upset adjustment show angle, can leave the fingerprint on the technology model machine of base station antenna, even cause the outward appearance of colliding with wearing and tearing base station antenna, and then influence the bandwagon effect.

Disclosure of Invention

The invention aims to provide a display stand with a conveniently-adjusted display angle.

In order to achieve the purpose, the invention provides the following technical scheme:

The utility model provides a show shelf, includes the base and locates tilting mechanism on the base, tilting mechanism is including locating on the base and can be relative the base rotates and is used for installing the installation component of treating the show product, with the worm wheel that the installation component is connected with locate on the base and with worm wheel meshing's worm, and with the drive assembly that the tip circumference of worm is fixed.

preferably, the mounting assembly comprises two connecting shafts which are coaxially arranged and are respectively arranged at the left end and the right end of the base, one end of each connecting shaft is connected with the base and can rotate relative to the base, and the other end of each connecting shaft is used for being connected with the product to be displayed; the worm wheel is sleeved on one of the connecting shafts and is fixed with the connecting shaft in the circumferential direction.

Preferably, the worm wheel is sleeved at the tail end of the connecting shaft, the turnover mechanism further comprises a fixing block abutted against the tail end of the connecting shaft and a fastener penetrating through the fixing block, and the fixing block is fixedly connected with the connecting shaft and the worm wheel through the fastener.

Preferably, the base comprises two support frames and a connecting mechanism which is arranged between the two support frames and can adjust the distance between the two support frames in a telescopic mode.

preferably, the connecting mechanism comprises a telescopic assembly and a locking assembly, the telescopic assembly comprises a first connecting pipe fixedly connected with the support frame, and a second connecting pipe which is nested with the first connecting pipe and can move along the axial direction of the first connecting pipe; the locking assembly is arranged at the joint of the first connecting pipe and the second connecting pipe and used for axially fixing the second connecting pipe relative to the first connecting pipe.

Preferably, be equipped with two side by side on the support frame flexible subassembly, locking Assembly includes two hoops, connecting rod and two nuts, two hoops overlap respectively and locate the junction of first connecting pipe and second connecting pipe in two flexible subassemblies, the both ends of connecting rod all are equipped with the external screw thread and wear to locate two respectively on the hoop, two nuts respectively with the both ends threaded connection of connecting rod can be relative the connecting rod is rotatory with the elasticity the hoop.

Preferably, the two nuts and the two hoops are integrally formed in a one-to-one correspondence mode, and the spiral directions of the external threads at the two ends of the connecting rod are opposite.

furthermore, the middle part of the connecting rod along the length direction is provided with a clamping part which is suitable for being clamped by a spanner.

Preferably, the hoop includes a first hoop end sleeved on the first connection pipe and a second hoop end sleeved on the second connection pipe, after the hoop is shrunk and clamped on the telescopic assembly, the inner diameter of the first hoop end is equal to the inner diameter of the first connection pipe, and the inner diameter of the second hoop end is equal to the inner diameter of the second connection pipe.

Preferably, the connecting mechanism further comprises a connector provided with a threaded connecting portion, and the connector is fixedly connected with the end portion of the first connecting pipe and is connected with the supporting frame through the threaded connecting portion.

Compared with the prior art, the scheme of the invention has the following advantages:

1. The turnover mechanism of the display rack provided by the invention can turn over the product to be displayed through the transmission of the worm wheel and the worm, and the worm wheel and the worm have a larger transmission ratio, so that the product to be displayed which is large in turnover volume and heavy can be driven to turn over to a better display angle in a labor-saving manner, and the product to be displayed can keep a hovering state at any angle through the self-locking performance of the non-reversible transmission of the worm wheel and the worm, thereby preventing the product to be displayed from rotating under the action of self weight or external force pushing, ensuring the display effect and ensuring the safety.

2. In the display rack provided by the invention, the distance between the two support frames can be changed through the telescopic adjustment of the connecting mechanism, so that the mounting space of the base can be adjusted according to requirements, the display rack can be adaptive to display products to be displayed with different sizes, and the practicability of the display rack is enhanced.

3. In the display rack provided by the invention, the connecting mechanism comprises two telescopic assemblies arranged side by side, the strength of the whole structure is improved while the two support frames are connected, the torque action on a product to be displayed when the product to be displayed is turned can be offset, the turning of the whole display rack is avoided, and the stability and the safety of the display rack are ensured.

4. In the display rack provided by the invention, the two ends of the connecting rod of the locking assembly are provided with the external threads with opposite spiral directions, so that the tightness of the two hoops can be synchronously adjusted by rotating the connecting rod, and the two telescopic assemblies are simultaneously locked or loosened, so that the adjustment of the telescopic assemblies is more convenient and faster. Secondly, through two flexible subassemblies are connected to the connecting rod, still can further promote overall structure's intensity, avoid two flexible subassemblies to take place to buckle the dislocation.

5. In the display rack provided by the invention, the hoop comprises the first hoop end and the second hoop end with different inner diameters, so that the first connecting pipe and the second connecting pipe with different outer diameters can be clamped simultaneously through one hoop, and the second connecting pipe is better axially fixed relative to the first connecting pipe.

6. According to the display rack provided by the invention, the first connecting pipe is fixedly connected with the supporting frame through the connector provided with the threaded connecting part, compared with the case that the threaded connecting part is directly arranged at the end part of the first connecting pipe, the problem that thread machining cannot be carried out through a common lathe due to the fact that the first connecting pipe is too long can be avoided, the connecting effect is ensured, and meanwhile, the manufacturing difficulty and the cost are reduced.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

the foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a reference view of a display shelf according to an embodiment of the present invention;

FIG. 2 is a perspective view of the display stand shown in FIG. 1;

FIG. 3 is an exploded view of the connection structure of the support frame and the mounting assembly of the display stand shown in FIG. 2;

FIG. 4 is an exploded view of a connection structure of a supporting frame and a turnover mechanism in the display shelf shown in FIG. 2;

FIG. 5 is an exploded view of the canting mechanism shown in FIG. 4;

FIG. 6 is a perspective view of a first connecting tube in the display stand shown in FIG. 2;

Fig. 7 is a perspective view of the locking assembly in the display stand shown in fig. 2.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.

It will be understood by those within the art that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.

fig. 1 to 7 collectively show the display shelf provided in the embodiment of the present invention, which is applicable to a process prototype for displaying a base station antenna, has a simple structure and strong practicability, can adjust the display angle of the base station antenna more conveniently and quickly, can realize a self-locking function after fixing, and reduces the cost of manpower and material resources when displaying products.

As shown in fig. 1 and fig. 2, the display rack 1000 includes a base 1 and a turnover mechanism 2 disposed on the base 1, where the turnover mechanism 2 is configured to fix the base station antenna 2000 on the base 1 for displaying and adjust a display angle of the base station antenna 2000.

Specifically, referring to fig. 3 and 4, the turnover mechanism 2 includes an installation component 21 for installing the base station antenna 2000, where the installation component 21 includes two connection shafts 211 coaxially disposed and respectively disposed at the left and right ends of the base 1, one end of each connection shaft 211 is connected to the base 1 and can rotate relative to the base 1, and the other end is used for being connected to the base station antenna 2000.

further, the connecting shaft 211 comprises a connecting end 2111, the connecting ends 2111 of the two connecting shafts 211 are arranged opposite to each other, the connecting ends 2111 are provided as threaded holes or threaded columns, the connecting shaft 211 can pass through the connecting end 2111 and pass through a preset connecting hole in the base station antenna 2000 and then be fastened by matching with a nut, so that the connecting shaft 211 is fixed relative to the base station antenna 2000, and one end of the connecting shaft 211, which is far away from the connecting end 2111, can pass through the preset connecting hole 111 in the base 1 and then be fixed by a first nut 212, so that the connecting shaft 211 is connected relative to the base 1.

Preferably, the connection end 2111 is provided with a flat position, and the connection end 2111 is circumferentially fixed relative to the base station antenna 2000 through the flat position, so as to prevent the base station antenna 2000 from rotating relative to the connection shaft 211 due to self weight or under the action of pushing by an external force when the fastening structure is not firm enough.

As shown in fig. 4 and 5, the turnover mechanism 2 further includes a worm wheel 22 sleeved on one end of the connecting shaft 211 penetrating through the base 1 and circumferentially fixed to the connecting shaft 211, a worm 23 arranged on the base 1 and engaged with the worm wheel 22, and a driving assembly 24 circumferentially fixed to an end of the worm 23. When the display angle of the base station antenna 2000 needs to be adjusted, the worm 23 can be driven by the driving component 24 to drive the worm wheel 22 to rotate, so as to drive the connecting shaft 211 to rotate, and further rotate the base station antenna 2000 fixedly connected with the connecting shaft 211, and the worm wheel 22 and the worm 23 have a large transmission ratio, so that the base station antenna 2000 with a large overturning volume and a large weight can be driven in a labor-saving manner, and can be overturned to a better display angle for displaying, and compared with manual carrying, a hand mark cannot be left on the base station antenna 2000, the appearance of the base station antenna 2000 is prevented from being collided and abraded, and the display effect is ensured.

Preferably, the lead angle of the worm 23 is smaller than the equivalent friction angle between the meshing wheel teeth of the worm wheel 22 and the worm 23, so that the worm 23 can drive the worm wheel 22 to rotate, but the worm wheel 22 cannot drive the worm 23 to rotate, and thus the base station antenna 2000 can maintain a hovering state at a specific angle through the self-locking performance of the non-reversible transmission of the worm wheel 22 and the worm 23, and the base station antenna 2000 is prevented from rotating due to self weight or under the pushing action of an external force, thereby further ensuring the display effect and ensuring safety.

As shown in fig. 5, the turnover mechanism 2 further includes a fixing block 25, the worm wheel 22 is sleeved on the end of the connecting shaft 211, the fixing block 25 abuts against the end of the connecting shaft 211, and the fixing block 25 is fixedly connected to the connecting shaft 211 and the worm wheel 22 through a fastening member 26, so that the worm wheel 22 is stably fixed on the connecting shaft 211, and the worm wheel 22 can be circumferentially and axially fixed with respect to the connecting shaft 211.

Preferably, the middle of one surface of the fixing block 25 abutting against the connecting shaft 211 is provided with a groove 251 for nesting the connecting shaft 211, the connecting shaft 211 is embedded in the groove 251, and the positioning effect of the groove 251 is convenient for assembling the fixing block 25 and enhancing the connecting strength of the connecting shaft 211 and the worm wheel 22.

Further, the connecting shaft 211 comprises a sleeve end 2112 for sleeving the worm wheel 22, a key groove is formed in the periphery of the sleeve end 2112 and the position corresponding to the inner side of the worm wheel 22, the turnover mechanism 2 further comprises a connecting key 27 embedded in the key groove, and the worm wheel 22 is further fixed relative to the connecting shaft 211 in the circumferential direction through the connecting key 27 so as to improve the torque transmission capacity of the connecting shaft 211.

Further, the turnover mechanism 2 further includes a connection block 28 having a connection hole 281, the connection block 28 can pass through a predetermined mounting hole on the base 1 through a screw and is fixed to the base 1 in the connection hole 281, the worm 23 is disposed on the connection block 28 in a penetrating manner and can rotate relative to the connection hole 28, that is, the worm 23 is fixed to the base 1 through the connection block 28.

the driving assembly 24 includes a handle 241 sleeved on an end of the worm 23 and circumferentially fixed to the worm 23, the end of the worm 23 is polygonal, the handle 241 is provided with a through hole 2411 adapted to the shape of the end of the worm 23, and after the end of the worm 23 passes through the through hole 2411, the handle 241 can be screwed to the worm 23 by a handle fastener 242 so as to be circumferentially fixed relative to the worm 23.

It should be appreciated that, in order to save cost and because of the large transmission ratio of the transmission structure of the worm wheel 22 and the worm 23, the base station antenna 2000 can be driven to rotate with less effort by manually turning the handle 241. However, in other embodiments, the driving component 24 may also be composed of a motor and a driving circuit related to the motor, and the operation of adjusting the display angle is more convenient, faster and more intelligent by controlling the motor to automatically drive the base station antenna 2000 to rotate.

Preferably, as shown in fig. 2, the base 1 includes two support frames 11 and a connection mechanism 12 disposed between the two support frames 11 and capable of adjusting the distance between the two support frames 11 in a telescopic manner, the two connection shafts 211 are disposed on the two support frames 11, the distance between the two support frames 11 can be changed by adjusting the telescopic adjustment of the connection mechanism 12, so as to adjust the distance between the two connection shafts 211, and further adjust the installation space of the base 1 according to the requirement, so that the display rack 1000 can adapt to the display requirements of the base station antennas 2000 with different styles and different sizes, thereby enhancing the practicability thereof.

Preferably, the connecting mechanism 12 includes a telescopic assembly 121 and a locking assembly 122, the telescopic assembly 121 includes a first connecting pipe 1211 and a second connecting pipe 1212 that are nested with each other, the first connecting pipe 1211 is fixedly connected to the supporting frames 11, each of the two supporting frames 11 is connected to one of the first connecting pipes 1211, and both ends of the second connecting pipe 1212 are respectively sleeved on the two first connecting pipes 1211 and can move along the axial direction of the first connecting pipe 1211, so that the distance between the two supporting frames 11 is adjusted by the axial movement of the second connecting pipe 1212 relative to the first connecting pipe 1211. The locking assembly 122 is disposed at a connection position of the first connection tube 1211 and the second connection tube 1212, and is used for axially fixing the second connection tube 1212 with respect to the first connection tube 1211, so that the locking assembly 122 locks and fixes the telescopic assembly 121 after the telescopic adjustment is completed, thereby ensuring structural stability of the display stand 1000 during use.

As shown in fig. 6, the connection mechanism 121 further includes a connection head 1213, the connection head 1213 is provided with a threaded connection portion 1213A, the threaded connection portion 1213A is a threaded hole or a threaded post, and the connection head 1213 is fixedly connected to the end of the first connection pipe 1211 and is connected to the support frame 11 through the threaded connection portion 1212A. As shown in fig. 3 and 4, the support frame 11 is provided with a second connection hole 112 at a position corresponding to the first connection pipe 1211, and the first connection pipe 1211 can be fastened by using a second nut 1214 after the connection head 1213 passes through the second connection hole 112. Since the large base station antenna 2000 needs to be adapted and displayed, the length of the first connection pipe 1211 is required to be large, and the first connection pipe 1211 cannot be fixed on a common lathe for thread machining of the end part after the length of the first connection pipe exceeds 500mm, and the manufacturing cost is greatly increased if a large lathe is used for machining, in this embodiment, the first connection pipe 1211 is fixedly connected with the support frame 11 through the connector 1213 provided with the thread connection portion 1213A, compared with the case that the thread connection portion is directly arranged at the end part of the first connection pipe 1211, the problem that the thread machining cannot be performed through the common lathe due to the fact that the first connection pipe 1211 is too long can be avoided, and the manufacturing difficulty and the cost are reduced while the connection effect is ensured.

further, the connecting head 1213 is provided with a first pin hole 1213B along a radial direction thereof, a second pin hole 1211A is provided at a position corresponding to the first pin hole 1213B at an end of the first connecting pipe 1211, and after the connecting head 1213 is inserted into the end of the first connecting pipe 1211, a structure of a pin or a bolt cooperating with a nut may be passed through the first pin hole 1213B and the second pin hole 1211A for fastening, so as to fixedly connect the connecting head 1213 to the first connecting pipe 1211.

Preferably, be equipped with two side by side on the support frame 11 flexible subassembly 121 to when connecting two support frames 11, promoted overall structure's intensity, and can offset the moment of torsion effect that base station antenna 2000 received when being overturned avoids resulting in whole show shelf 1000 to take place to overturn, guarantees show shelf 1000's stability and security.

Preferably, as shown in fig. 7, the locking assembly 122 includes two hoops 1221, a connecting rod 1222 and two nuts 1223, the two hoops 1221 are respectively sleeved at a connection portion of a first connecting pipe 1211 and a second connecting pipe 1212 of the two telescopic assemblies 121, two ends of the connecting rod 121 are respectively provided with an external thread and respectively penetrate through the two hoops 1221, the two nuts 1223 are respectively connected with two ends of the connecting rod 1222 through threads and can rotate relative to the connecting rod 1222 to tighten or loosen the hoops 1221, and the two hoops 1221 are connected by the connecting rod 1222, so that the strength of the overall structure can be further improved, and bending and dislocation of the two telescopic assemblies 121 can be avoided.

Preferably, the two nuts 1223 are respectively fixedly connected to the two hoops 1221, preferably, the two nuts 1223 and the two hoops 1221 are integrally formed in one-to-one correspondence, and the two nuts 1223 are located on one side of the two hoops 1221, which is relatively far away from each other, and the screw directions of the external threads at the two ends of the connecting rod 1222 are opposite, so that when the connecting rod 1222 is rotated, the two nuts 1223 are driven to move in opposite directions, and then the tightness of the two hoops 1221 can be synchronously adjusted by rotating the connecting rod 1222, and the two telescopic assemblies 121 are simultaneously locked or loosened, so that the adjustment of the telescopic assemblies 121 is more convenient and faster.

Further, the middle of the connecting rod 1222 along the length direction thereof is provided with a clamping portion 1222A adapted to be clamped by a wrench, and the clamping portion 1222A may be a polygonal column to facilitate the clamping by the wrench, so as to adjust the tightness of the two hoops 1221 by rotating the connecting rod 1222 through the driving of the wrench.

preferably, the hoop 1221 includes a first hoop end 1221A and a second hoop end 1221B coaxially disposed, the first hoop end 1221A is sleeved on the first connection tube 1211, the second hoop end 1221B is sleeved on the second connection tube 1212, and after the hoop 1221 is shrunk and clamped on the telescopic assembly 121, the inner diameter of the first hoop end 1221A is equal to the inner diameter of the first connection tube 1211, and the inner diameter of the second hoop end 1221B is equal to the inner diameter of the second connection tube 1212, and by changing the inner diameters of the two ends of the hoop 1221, the hoop can be simultaneously clamped on the first connection tube 1211 and the second connection tube 1212 having different outer diameters, and more preferably, the second connection tube 1212 is axially fixed relative to the first connection tube 1211.

Further, the inner diameter of the hoop 1221 may be gradually reduced or enlarged along the axial direction of the telescopic assembly 121 to form the first and second hoop ends 1221A and 1221B at both ends of the hoop 1221, respectively.

In addition, in the embodiment of the present invention, the base station antenna 2000 is taken as an example to explain the application of the display stand 1000, but the application cannot be taken as a limitation to the specific application of the display stand 1000, the display stand 1000 may also be used to display other large products to be displayed which are difficult to carry and fix, and the display stand 1000 can be used to drive and turn the products to be displayed to a better display angle and to be fixed in a self-locking manner with less effort, so as to improve the display effect.

The foregoing is only a partial embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a show shelf, its characterized in that includes the base and locates tilting mechanism on the base, tilting mechanism is including locating on the base and can be relative the base rotates and is used for installing the installation component of treating the show product, with the worm wheel that the installation component is connected with locate on the base and with worm wheel meshing's worm, and with the drive assembly that the tip circumference of worm is fixed.

2. The display stand according to claim 1, wherein the mounting assembly comprises two connecting shafts which are coaxially arranged and respectively arranged at the left end and the right end of the base, one end of each connecting shaft is connected with the base and can rotate relative to the base, and the other end of each connecting shaft is used for being connected with the product to be displayed; the worm wheel is sleeved on one of the connecting shafts and is fixed with the connecting shaft in the circumferential direction.

3. The display stand of claim 2, wherein the worm gear is sleeved on the end of the connecting shaft, the turnover mechanism further comprises a fixing block abutting against the end of the connecting shaft and a fastener penetrating the fixing block, and the fixing block is fixedly connected with the connecting shaft and the worm gear through the fastener.

4. The display stand of claim 1, wherein the base comprises two support frames and a connecting mechanism disposed between the two support frames and capable of telescopically adjusting the distance between the two support frames.

5. The display stand of claim 4, wherein the connection mechanism comprises:

The telescopic assembly comprises a first connecting pipe fixedly connected with the support frame and a second connecting pipe which is mutually nested with the first connecting pipe and can move along the axial direction of the first connecting pipe;

And the locking assembly is arranged at the joint of the first connecting pipe and the second connecting pipe and is used for axially fixing the second connecting pipe relative to the first connecting pipe.

6. The display rack according to claim 5, wherein the supporting frame is provided with two telescopic assemblies side by side, the locking assembly comprises two hoops, a connecting rod and two nuts, the two hoops are respectively sleeved on the connecting position of a first connecting pipe and a second connecting pipe of the two telescopic assemblies, the two ends of the connecting rod are respectively provided with an external thread and respectively penetrate through the two hoops, and the two nuts are respectively in threaded connection with the two ends of the connecting rod and can rotate relative to the connecting rod to tighten or loosen the hoops.

7. The display stand of claim 6, wherein the two nuts are integrally formed with the two hoops in a one-to-one correspondence, and the external threads at the two ends of the connecting rod are opposite in spiral direction.

8. The display stand of claim 7, wherein the connecting rod is provided with a clamping portion at a middle portion in a length direction thereof to be clamped by a wrench.

9. The display stand of claim 6, wherein the hoop includes a first hoop end disposed over the first connecting tube and a second hoop end disposed over the second connecting tube, the first hoop end having an inner diameter equal to an inner diameter of the first connecting tube and the second hoop end having an inner diameter equal to an inner diameter of the second connecting tube after the hoop is shrunk clamped onto the expansion assembly.

10. The display stand of claim 5, wherein the connecting mechanism further comprises a connector with a threaded connection portion, and the connector is fixedly connected with the end portion of the first connecting pipe and connected with the supporting frame through the threaded connection portion.