CN217153550U - Support frame - Google Patents

Abstract

A bracket comprises a first clamping plate, a second clamping plate, a connecting plate and a handle; the connecting plate is detachably connected with the first clamping plate, the second clamping plate is positioned on the inner side of the connecting plate, the handle is provided with a guide rod extending axially, one end of the guide rod is connected with the second clamping plate, the other end of the guide rod is fixed with the handle, and the guide rod penetrates through the through hole in the connecting plate and is in clearance fit with the through hole; an elastic piece is arranged between the second clamping plate and the connecting plate and sleeved on the guide rod, one end of the elastic piece abuts against the outer side wall of the second clamping plate, and the other end of the elastic piece abuts against the inner side of the connecting plate; the elastic piece is used for abutting against the second clamping plate so that the upright post is clamped between the first clamping plate and the second clamping plate. The method has the advantages of no need of screwing modes such as threads and the like, simple and convenient operation, saving of height positioning time and no need of tools.

Description

Support frame

Technical Field

The application relates to the technical field of electronic equipment supporting structures, in particular to a support.

Background

With the continuous development of the biometric technology, more and more electronic devices realize the identification function by the biometric technology; in particular, the face recognition electronic equipment developed in recent years can be used for temperature measurement, attendance checking and card punching and the like, and has high accuracy and strong recognition capability; in order to match with the height requirement of a human body, the devices need to be placed on the supporting rods for supporting, so that the face of a person can be conveniently identified, and the detection can be quickly completed.

In order to fix and contact the electronic device and the support rod well, a support device is generally designed to complete the fixing; however, the existing supporting device mostly adopts a screw and a handle to screw to clamp the supporting structure and the supporting rod, but the screwing process needs to consume too long time, or needs to be locked and locked firmly by means of a tool, which brings much inconvenience to the operation; in addition, in order to ensure the clamping firmness, the screwing mode needs to apply larger acting force, so that more requirements are made on operators; in the screwing process and before tight clamping, the supporting structure is separated from the supporting rod, so that the supporting structure needs to be supported by one hand and the handle needs to be screwed by the other hand, and the operation is very inconvenient; in addition, because the screwing is carried out in a threaded mode, the screwing strength cannot be controlled, and the phenomenon that the clamping plate falls off can be caused if the clamping plate is rotated and transited.

SUMMERY OF THE UTILITY MODEL

The utility model provides a to the above-mentioned not enough of prior art, provide a height control process and need not adopt screw thread etc. to revolve wrong mode, easy operation is convenient, save high positioning time, also need not the support with the help of the instrument.

In order to solve the technical problem, the technical scheme adopted by the application is as follows: a bracket comprises a first clamping plate, a second clamping plate, a connecting plate and a handle; the connecting plate is detachably connected with the first clamping plate, the second clamping plate is positioned on the inner side of the connecting plate, the handle is provided with a guide rod extending axially, one end of the guide rod is connected with the second clamping plate, the other end of the guide rod is fixed with the handle, and the guide rod penetrates through the through hole in the connecting plate and is in clearance fit with the through hole; an elastic piece is arranged between the second clamping plate and the connecting plate and sleeved on the guide rod, one end of the elastic piece abuts against the outer side wall of the second clamping plate, and the other end of the elastic piece abuts against the inner side of the connecting plate; the elastic piece is used for abutting against the second clamping plate so that the upright post is clamped between the first clamping plate and the second clamping plate.

By adopting the structure, the first clamping plate and the second clamping plate are mutually clamped under the elastic action of the elastic piece, so that the upright post is clamped between the first clamping plate and the second clamping plate, and the connection between the supporting device and the upright post is realized; due to the adoption of the elastic part, the clamping operation is not required to be carried out in a threaded screwing mode like the prior art, the time for clamping is saved, and the clamping is carried out through the elastic relaxation force of the elastic part per se, so that the clamp plate can not fall off or be damaged due to excessive screwing; in the structure, when the height of the supporting device on the stand column needs to be adjusted, the handle is pulled outwards only by one hand, the guide rod is in clearance fit with the connecting plate, the connecting plate is connected with the first clamping plate, the relative positions of the connecting plate and the first clamping plate are fixed, the handle drives the elastic piece and the guide rod to stretch outwards along the connecting plate, and the elastic piece between the second clamping plate and the connecting plate shrinks under the mutual extrusion of the second clamping plate and the connecting plate, so that the second clamping plate is separated from the stand column under the driving of the guide rod, the vertical adjustment of the supporting device along the height of the stand column can be realized, and once the height is adjusted, the handle is loosened, the elastic piece relaxes again to enable the second clamping plate to lean against the stand column for clamping, and the position fixation is realized; whole operation process singlehanded can realize, perhaps in order to prevent that the stand from empting the most with the foot step on the stand lower extreme can, the operation is very convenient.

Furthermore, the guide rod is in threaded connection with the second clamping plate; by adopting the structure, the length of the guide rod can be adjusted by screwing the threads, and the length of the guide rod directly influences the elastic relaxation force of the elastic part between the connecting plate and the second clamping plate, so that the adjustment of the relaxation force is realized through the structure, and the adjustment of the clamping force of the whole supporting device is also realized; in addition, the threaded connection mode can meet the clamping of columns with different diameters.

Furthermore, the detachable connection between the connecting plate and the first clamping plate is bolt connection or fastening connection; by adopting the structure, the flexible disassembly between the elastic piece and the second clamping plate can be realized, meanwhile, the relative position between the fixed connecting plate and the first clamping plate can be conveniently fixed, and the better work of the elastic piece and the second clamping plate is ensured.

Furthermore, anti-skid sheets are arranged on the inner sides of the first clamping plate and/or the second clamping plate and are used for being attached to the outer side wall of the upright post; by adopting the structure, the clamping force of the supporting device to the upright post can be further enhanced, and the problem that the height positioning is unstable due to the sliding of the supporting device relative to the upright post is prevented.

Furthermore, an anti-slip sheet is arranged on the inner side of the second clamping plate; adopt this structure, because the second grip block will be to the pressfitting of the repeated a lot of post or break away from relatively, have certain striking dynamics, set up the antiskid ribbed tile in this side and both can improve the stability of high location, can also play the cushioning effect, effectively protect stand and second grip block not receive the damage.

Furthermore, a first bulge which is outward in the radial direction is arranged on the outer side wall of the second clamping plate, a first groove is formed in the first bulge, and one end of the elastic piece abuts against the first groove; adopt this structure, can effectively fix the position of elastic component on the second grip block, realize accurate the dynamics of leaning on.

Furthermore, a second bulge which is outward in the radial direction is arranged on the outer side wall of the connecting plate, the second bulge covers the through hole, a second groove is formed in the second bulge, and one end of the elastic piece abuts against the second groove; by adopting the structure, one end of the elastic piece can be limited on the connecting plate, and the dislocation between the elastic piece and the connecting plate is prevented.

Furthermore, a step groove is formed in the end, close to the elastic piece, of the through hole in the connecting plate, and the step groove is used for abutting against the elastic piece; by adopting the structure, the end of the elastic piece is abutted against the stepped groove, so that the effective positioning between the elastic piece and the connecting plate is realized, and the dislocation of the elastic piece and the connecting plate is prevented.

Furthermore, when the first clamping plate is detachably connected with the connecting plate, the elastic piece is in a deformation state; by adopting the structure, when the first clamping plate is detachably connected with the connecting plate, the elastic piece can be always kept in a state of jacking force on the second clamping plate, so that the stand column between the first clamping plate and the second clamping plate is ensured to have the clamping force effect, the height positioning stability is improved, and the elastic piece is prevented from losing efficacy and sliding.

Furthermore, the first bulge is positioned in the middle of the second clamping plate, and the second bulge is positioned in the middle of the connecting plate; by adopting the structure, more balanced and stable elasticity can be realized, and more stable clamping effect can be realized.

Further, the bending arc length of the second clamping plate is smaller than that of the first clamping plate; by adopting the structure, the second clamping plate can be provided with looser radial stroke, and the clamping requirements of stand columns with different diameters are met.

Further, the elastic part is a spring; simple structure, elasticity is stable.

Drawings

Fig. 1 is a structural diagram illustrating a stent in a use state according to the present application.

FIG. 2 is a schematic structural view of a stent assembly of the present application.

FIG. 3 is a schematic view of a first angle configuration of the stent of the present application.

FIG. 4 is a second angle schematic view of the stent of the present application.

Fig. 5 is a partial structural schematic view of a stent of the present application.

Fig. 6 is a schematic structural view of the connection plate of the present application.

Fig. 7 is a schematic view of the structure of the web and the second projection of the present application.

Fig. 8 is a schematic structural view of a second clamping plate of the present application.

FIG. 9 is a schematic structural diagram of an embodiment of a connection mode of the connection plate and the first clamping plate.

As shown in the attached drawings: 1. the electronic device comprises a first clamping plate, a second clamping plate, a first protrusion, a first groove, a connecting plate, a through hole, a second protrusion, a second groove, a step groove, a handle, a guide rod, an elastic piece, an upright post, an anti-skid sheet and an electronic device, wherein the first clamping plate is 2, the second clamping plate is 21, the first protrusion is 22, the first groove is 3, the connecting plate is 31, the through hole is 32, the second protrusion is 33, the second groove is 34, the step groove is 34, the handle is 4, the guide rod is 5, the elastic piece is 6, the upright post is 7, the anti-skid sheet is 8, and the electronic device is 9.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments, and it is obvious that the described embodiments are only preferred embodiments, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention;

further, it is to be noted that: when an element is referred to as being "secured to" (and other means included similarly to "being secured to") another element, it can be directly on the other element or intervening elements may also be present, secured by the intervening elements. When an element is referred to as being "connected" (and its equivalents are included as "connected") to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" (and other manners of "disposed on" that are similarly intended) another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The inner side and the outer side mentioned in the application are the inner side close to the upright post and the outer side far away from the upright post.

As shown in the attached drawings 1-2, the technical scheme adopted by the application is as follows: a bracket comprises a first clamping plate 1, a second clamping plate 2, a connecting plate 3 and a pull handle 4 (which can be in a pull ring form or a cylindrical structure in the drawing and can be conveniently applied by an operator); the connecting plate 3 is detachably connected with the first clamping plate 1 (the first clamping plate and the connecting plate can be disconnected in a non-use state and detachably connected with each other when in use), the second clamping plate 2 is positioned on the inner side of the connecting plate 3, the handle 4 is provided with a guide rod 5 extending axially, one end of the guide rod 5 is connected with the second clamping plate 2, the other end of the guide rod 5 is fixed with the handle 4, and the guide rod 5 penetrates through a through hole 31 on the connecting plate 3 and is in clearance fit with the through hole 31; an elastic part 6 is arranged between the second clamping plate 2 and the connecting plate 3, the elastic part 6 is sleeved on the guide rod 5, one end of the elastic part 6 is abutted against the outer side wall of the second clamping plate 2, and the other end of the elastic part is abutted against the inner side of the connecting plate; the elastic member 6 is used for abutting against the second clamping plate 2, so that the pillar 7 is clamped between the first clamping plate 1 and the second clamping plate 2 (namely, the elastic member is used for abutting against the second clamping plate, and the pillar is clamped between the first clamping plate and the second clamping plate).

By adopting the structure, the first clamping plate and the second clamping plate are mutually clamped under the elastic action of the elastic piece, so that the upright post is clamped between the first clamping plate and the second clamping plate, and the connection between the supporting device and the upright post is realized; due to the adoption of the elastic piece, the clamping operation is not required to be carried out in a threaded screwing mode like the prior art, and the positioning of the circumferential knob is converted into the positioning by simply stretching in the radial direction, so that the time for clamping the upright column is saved; the clamping is carried out through the elastic relaxation force of the elastic piece, and the clamping plate can not fall off or other parts can not be damaged due to excessive screwing; in the structure, when the height of the supporting device on the stand column needs to be adjusted, the handle is pulled outwards only by one hand, the guide rod is in clearance fit with the connecting plate, the connecting plate is connected with the first clamping plate, the relative positions of the connecting plate and the first clamping plate are fixed, the handle drives the elastic piece and the guide rod to stretch outwards along the connecting plate, and the elastic piece between the second clamping plate and the connecting plate shrinks under the mutual extrusion of the second clamping plate and the connecting plate, so that the second clamping plate is separated from the stand column under the driving of the guide rod, the vertical adjustment of the supporting device along the stand column can be realized, and once the height is adjusted, the handle is loosened, the elastic piece relaxes again to enable the second clamping plate to lean against the stand column for clamping, and the position fixation is realized; whole operation process singlehanded can realize, perhaps in order to prevent that the stand from empting the most with the foot step on the stand lower extreme can, the operation is very convenient.

As shown in fig. 2, the guide rod 5 and the second clamping plate 2 are in threaded connection (fig. 2 shows that a thread is arranged at the end of the guide rod, and correspondingly, as shown in fig. 8, a threaded hole (which can not penetrate through the thickness of the second clamping plate and prevent multiple extrusion on the anti-slip sheet or the upright post) is arranged in the side wall of the second clamping plate along the thickness direction and is used for being in threaded connection with the guide rod, so that the linkage between the handle and the second clamping plate is realized); by adopting the structure, in the process of connecting the guide rod and the second clamping plate, the length of the guide rod between the second clamping plate and the handle can be adjusted by screwing the threads, and the length of the guide rod directly influences the elastic relaxation force of the elastic part between the connecting plate and the second clamping plate, so that the adjustment of the relaxation force is realized through the structure, and the adjustment of the clamping force of the whole supporting device is also realized; in addition, foretell this kind of threaded connection mode can also satisfy the centre gripping of the stand of different diameters, when the stand diameter is great relatively, reduces guide bar length, when the stand diameter is little relatively, then can prolong the guide bar length, guarantees that the elastic component can have the top thrust all the time to the stand.

By way of example, the detachable connection between the connection plate 3 and the first clamping plate 1 is a bolt connection or a buckle connection; specifically, as shown in fig. 1 and 3, the connection is a snap-fit connection, that is, two sides of the first clamping plate are provided with snap-fit holes, and two corresponding ends of the connecting plate are provided with buckles (specifically provided with radially outward protruding portions), so that the buckles pass through the snap-fit holes, expand towards the two ends under the elastic force of the connecting plate, and then the radially outward protruding portions are snapped with the walls of the snap-fit holes; when the connecting plate is disassembled, the two ends of the connecting plate are slightly pressed towards the middle, and the convex parts are separated from the wall and slide out of the buckling holes, so that the disassembly is completed; specifically, as shown in fig. 9, the first clamping plate is provided with threaded holes at both sides thereof, and the connecting plate is provided with threaded holes at both sides thereof, and the first clamping plate and the connecting plate are connected by bolts (nuts); by adopting the detachable structure, the flexible detachment between the first clamping plate and the second clamping plate can be realized, and meanwhile, the relative position between the fixed connecting plate and the first clamping plate can be conveniently fixed, so that the better work of the elastic piece and the second clamping plate can be ensured.

The inner side of the first clamping plate 1 and/or the second clamping plate 2 is provided with a antiskid sheet 8, and the antiskid sheet 8 is used for being attached to the outer side wall of the upright post 7; namely, the inner side walls of the first clamping plate 1 and the second clamping plate 2 are simultaneously provided with anti-skid sheets, or alternatively provided with anti-skid sheets; by adopting the structure, the clamping force of the supporting device to the upright post can be further enhanced, and the problem of unstable height positioning caused by the sliding of the supporting device relative to the upright post is prevented; the antiskid sheets of the application can be fixed on the inner wall of the clamping plate through bonding, welding or other modes.

As an example, as shown in fig. 1 to 5, the inner side of the second clamping plate 2 is provided with a skid-proof sheet 8; adopt this structure, because the second grip block will be to the pressfitting of a lot of that the stand is repeated or break away from mutually, there is certain striking dynamics to the stand under the effort of elastic component, set up the antiskid ribbed tile in this side and both can improve the stability of high location, can also play the cushioning effect, effectively protect stand and second grip block not receive the damage.

As shown in fig. 2, 4 and 8, a first protrusion 21 is disposed on an outer side wall of the second clamping plate 2, the first protrusion 21 is disposed with a first groove 22, and one end of the elastic element 6 abuts against the first groove 22; adopt this structure, can effectively fix the position of elastic component on the second grip block, realize accurate the dynamics of leaning on.

As an embodiment, as shown in fig. 2, 4 and 7, a second protrusion 32 is disposed on an outer side wall of the connecting plate 3, and the second protrusion covers the through hole 31 (i.e., the second protrusion is along the radial direction of the connecting plate and the through hole is an axis, so that a guide rod can pass through the through hole from the second protrusion), a second groove 33 is disposed in the second protrusion 32, and one end of the elastic element 6 abuts against the second groove 33; specifically, referring to fig. 7, a step surface is arranged in the second groove, the step surface is used for allowing the elastic member to pass through the through hole and then abut against the step surface, and the second protrusion is also provided with a through hole (ensuring that the guide rod slides smoothly back and forth along the radial direction) for allowing the guide rod to pass therethrough so as to be associated with the connecting plate; by adopting the structure, one end of the elastic piece can be limited on the connecting plate, so that the dislocation between the elastic piece and the connecting plate is prevented; the second bulge and the connecting plate can be arranged in an integrated structure, or the second bulge is fixed on the connecting plate in a welding mode, a bonding mode and the like; fig. 7 is a view showing the second groove, which is separated from the connecting plate, for better viewing of the internal structure of the second groove.

As an embodiment, as shown in fig. 6, a step groove 34 is provided at an end of the through hole 31 of the connecting plate 3 close to the elastic element 6, and the step groove 34 is used for abutting against the elastic element 6 (i.e. an end of the elastic element abuts against a bottom surface of the step groove); here, the step groove is provided on the wall of the connecting plate, not in the second groove; at the moment, the outer wall of the re-connecting plate can be simultaneously provided with a second bulge to prolong the sliding formation of the guide rod and ensure the sliding stability of the guide rod; by adopting the structure, the end of the elastic piece is abutted against the stepped groove, so that the effective positioning between the elastic piece and the connecting plate is realized, and the dislocation of the elastic piece and the connecting plate is prevented.

In the application, when the first clamping plate 1 is detachably connected with the connecting plate 3, the elastic part 6 is in a deformation state, namely after the first clamping plate is detachably connected with the connecting plate, the elastic part is positioned between the second clamping plate and the connecting plate and is always in a deformation state; by adopting the structure, when the first clamping plate is detachably connected with the connecting plate, the elastic piece can be always kept in a state of jacking force on the second clamping plate, so that the stand column between the first clamping plate and the second clamping plate is ensured to have the clamping force effect, the height positioning stability is improved, and the elastic piece is prevented from losing efficacy and sliding.

As an example, the first protrusion 21 is located in the middle of the second clamping plate 2, and the second protrusion 32 is located in the middle of the connecting plate 3 (i.e. each is located in the center of the plate); by adopting the structure, more balanced and stable elasticity can be realized, and more stable clamping effect can be realized.

As an example, as shown in fig. 3 to 4, the bending arc length of the second clamping plate 2 is smaller than that of the first clamping plate 1; adopt this structure, can give the second grip block more loose radial stroke, its degree of opening and shutting between and the first grip block promptly satisfies the centre gripping requirement of different diameter stands.

As a specific embodiment, as shown in fig. 2, the elastic member 6 is a spring; simple structure, elasticity is stable.

The first clamping plate, the second clamping plate and the connecting plate can adopt an arc-shaped bent plate structure as a specific implementation mode, and can be conveniently attached to a cylindrical stand column more stably; the arc lengths of the first clamping plate and the connecting plate are larger than that of the second clamping plate, the second clamping plate is arranged between the first clamping plate and the second clamping plate, radial stretching and retracting actions are realized, and clamping and height adjustment of the stand column are realized; the guide rod is connected with the second clamping plate in a threaded connection mode, the guide rod and the second clamping plate are connected stably, the length of the guide rod can be adjusted, the guide rod moves back and forth along the radial direction of the second clamping plate under the action of the handle, compression and relaxation of the elastic piece are achieved, and therefore the stand column is clamped or height-adjusted; the elastic piece of this application will satisfy and to have sufficient relaxation dynamics, guarantees that strutting arrangement can be supported and leaned on the stand.

The specific working principle and process of the support device are as follows: firstly, a guide rod penetrates through a through hole of a connecting plate, then an elastic part is sleeved on the guide rod, and the front end of the guide rod is connected with a second clamping plate (a threaded connection mode is adopted here); then the first clamping plate is connected with the connecting plate (both bolts and fasteners can be used); the anti-slip sheet is bonded on the inner side surface of the second clamping plate according to requirements; then pulling the handle outwards in the radial direction, indirectly enlarging the space between the first clamping plate and the second clamping plate at the moment, sleeving the upright column between the first clamping plate and the second clamping plate, loosening the handle, pushing the second clamping plate towards the first clamping plate under the action of the elastic part, clamping the upright column, and realizing the fixation of the height; when the height needs to be adjusted, the handle is pulled outwards in the radial direction again to adjust the height, and the height can be fixed again by loosening the handle; the operation is convenient and fast, and the time is saved; as shown in fig. 1-2, an electronic device 9 (such as a face recognition attendance machine) of the present application is connected to a support frame of a first holding plate (the rear end face of the first holding plate of the support frame extends out for mounting the electronic device), so that the height of the electronic device can be adjusted up and down along with the whole support device to meet the use requirements of different heights; the application discloses the relaxation dynamics of elastic component can satisfy the bearing dynamics that needs whole electronic equipment and strutting arrangement.

Claims (13)

1. A stent, characterized by: the device comprises a first clamping plate (1), a second clamping plate (2), a connecting plate (3) and a handle (4); the connecting plate (3) is detachably connected with the first clamping plate (1), and the second clamping plate (2) is positioned on the inner side of the connecting plate (3); the handle (4) is provided with a guide rod (5) extending axially, one end of the guide rod (5) is connected with the second clamping plate (2), the other end of the guide rod (5) is fixed with the handle (4), and the guide rod (5) penetrates through a through hole (31) in the connecting plate (3) and is in clearance fit with the through hole (31); an elastic part (6) is arranged between the second clamping plate (2) and the connecting plate (3), the elastic part (6) is sleeved on the guide rod (5), one end of the elastic part (6) abuts against the outer side wall of the second clamping plate (2), and the other end of the elastic part abuts against the inner side of the connecting plate (3); the elastic piece (6) is used for abutting against the second clamping plate (2) so that the upright post (7) is clamped between the first clamping plate (1) and the second clamping plate (2).

2. The bracket of claim 1, wherein: the guide rod (5) is in threaded connection with the second clamping plate (2).

3. The bracket of claim 1, wherein: the detachable connection between the connecting plate (3) and the first clamping plate (1) is bolt connection or buckling connection.

4. The bracket of claim 1, wherein: the inner sides of the first clamping plate (1) and/or the second clamping plate (2) are provided with anti-skidding sheets (8), and the anti-skidding sheets (8) are used for being attached to the outer side wall of the upright post (7).

5. The bracket of claim 4, wherein: and an anti-skid sheet (8) is arranged on the inner side of the second clamping plate (2).

6. The bracket of claim 1, wherein: the outer side wall of the second clamping plate (2) is provided with a first protrusion (21) which is outward in the radial direction, a first groove (22) is formed in the first protrusion (21), and one end of the elastic piece (6) abuts against the first groove (22).

7. The bracket of claim 1, wherein: the outer side wall of the connecting plate (3) is provided with a second protrusion (32) which is outward in the radial direction, the second protrusion (32) covers the through hole (31), a second groove (33) is formed in the second protrusion (32), and one end of the elastic piece is abutted to the second groove.

8. The bracket of claim 1, wherein: the through hole (31) on the connecting plate (3) is provided with a step groove (34) at the end close to the elastic part (6), and the step groove (34) is used for abutting against the elastic part (6).

9. The bracket of claim 1, wherein: when the first clamping plate (1) is detachably connected with the connecting plate (3), the elastic piece (6) is in a deformation state.

10. The bracket of claim 6, wherein: the first bulge (21) is positioned in the middle of the second clamping plate (2).

11. The bracket of claim 7, wherein: the second bulge (32) is positioned in the middle of the connecting plate (3).

12. The bracket of claim 1, wherein: the bending arc length of the second clamping plate (2) is smaller than that of the first clamping plate (1).

13. The bracket of claim 1, wherein: the elastic piece (6) is a spring.

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