CN219282170U

CN219282170U - Mounting structure and damping toggle system

Info

Publication number: CN219282170U
Application number: CN202320077922.7U
Authority: CN
Inventors: 许姜德
Original assignee: Guangdong OPK Smart Home Technology Co Ltd
Current assignee: Guangdong OPK Smart Home Technology Co Ltd
Priority date: 2023-01-10
Filing date: 2023-01-10
Publication date: 2023-06-30
Anticipated expiration: 2033-01-10

Abstract

The utility model provides a mounting structure and a damping toggle system, wherein the mounting structure comprises: a base; the clamping piece is movably arranged on the base body; and a driving member acting on the clamping member so that the clamping member can be away from the base body in the width direction of the base body. The base body and the clamping block of the mounting structure are of split design, the material of the clamping block can be freely selected, the probability of structural abrasion is low when the mounting structure is used, the clamping piece is not easy to deform when impacted, the mounting position of the assembled structural member can be ensured not to deviate, and meanwhile, the clamping piece is convenient to replace, so that the assembly firmness and the safety of the mounting structure can be effectively improved.

Description

Mounting structure and damping toggle system

Technical Field

The utility model relates to the technical field of hardware accessories, in particular to a mounting structure and a damping toggle system.

Background

When current hardware is assembled, independent parts are fixedly installed through screws or bolts, corresponding holes or screw holes are usually required to be formed in the connected piece for the assembly of the matched screws and bolts, so that the structural strength of the hardware to be fixedly installed is reduced, and the production cost is increased.

Chinese patent publication No. CN217842280U discloses a quick mounting structure comprising a support base; an expansion and contraction member; a pushing member; the expanding and contracting piece and the pushing piece are both arranged on the supporting seat; the pushing piece acts on the expanding and contracting piece to expand the expanding and contracting piece in the width direction and is locked in the installation cavity for installing the expanding and contracting piece; the pushing piece acts on the expandable expansion piece, so that when the expansion piece is assembled in the mounting cavity, other mounting structures are not needed, and the damage to the mounting cavity is avoided; when the action of the pushing piece on the expanding and contracting piece is released, the expanding and contracting piece can be quickly detached from the mounting cavity.

In the above patent, the expansion member is forced by the pushing member, and the expansion member and the assembled structural member assembled to the expansion member are correspondingly and rapidly assembled in the installation cavity by utilizing the material property, namely the elastic deformation, of the expansion member itself, thereby realizing the size increase in the width direction. However, with the lapse of the service time, that is, after long-term use, there is a possibility that the expansion member is worn out due to the elastic deformation capability and the installation firmness is poor, and in particular, in the process of use, the expansion member is further deformed due to gravity of the assembled structural member or vibration impact during movement, etc., so that there is a possibility that the installation position of the assembled structural member is offset in this case.

In view of this, the present application is specifically proposed.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide a mounting structure which is firm in structure and can realize quick mounting.

It is a further object of the present utility model to provide a damped toggle system which is easy to assemble.

The embodiment of the utility model is realized by the following technical scheme:

a mounting structure, comprising: a base; the clamping piece is movably arranged on the base body; and a driving member acting on the clamping member so that the clamping member can be away from the base body in the width direction of the base body.

According to a preferred embodiment, the mounting structure further comprises a restoring element which acts on the clamping element, so that the clamping element can always have a movement tendency in the width direction of the base body close to the base body.

According to a preferred embodiment, the clamping element is slidingly connected to the base body; the working end of the driving piece is positioned between the base body and the clamping piece.

According to a preferred embodiment, the base body is provided with a containing groove, and the clamping piece is arranged in the containing groove in a sliding manner; the working end of the driving piece is positioned in the accommodating groove and can act on the clamping piece, so that the clamping piece slides in the accommodating groove along the width direction of the base body.

According to a preferred embodiment, the driving member comprises at least a driving portion having a cylindrical shape; the driving part is in threaded connection with the base body, a driving included angle is formed between the axial direction of the driving part and the width direction of the base body, and the driving included angle is 60-120 degrees.

According to a preferred embodiment, the clamping piece is provided with a first driving surface, and the working end of the driving piece can be in sliding abutting connection with the first driving surface; or the working end of the driving piece is provided with a second driving surface, and the clamping piece can be in sliding abutting connection with the second driving surface; or the clamping piece is provided with a first driving surface, the working section of the driving piece is provided with a second driving surface, and the first driving surface can be in sliding abutting connection with the second driving surface.

According to a preferred embodiment, the clamping piece is provided with a first driving surface, and the working end of the driving piece can be in sliding abutting connection with the first driving surface; the first driving surface is a conical surface or an inclined surface.

According to a preferred embodiment, the base body is provided with an adjusting hole, and the adjusting hole is communicated with the accommodating groove; the driving part is embedded in the adjusting hole and is in threaded connection with the adjusting hole.

According to a preferred embodiment, the base body is provided with a containing groove, and the clamping piece is arranged in the containing groove in a sliding manner; the resetting piece is a magnet assembly, the magnet assembly comprises a first magnet and a second magnet, the first magnet is arranged on the clamping piece, and the second magnet is arranged on the base body; when the clamping piece is positioned in the accommodating groove, the first magnet and the second magnet can attract each other.

According to a preferred embodiment, the substrate is provided with two accommodating grooves, and the two accommodating grooves are correspondingly arranged on two sides of the width direction of the substrate; the two clamping pieces are arranged in the two accommodating grooves in a one-to-one corresponding sliding manner; the resetting piece is a magnet assembly, and the magnet assembly comprises a first magnet which is arranged on the clamping piece; when the clamping pieces are positioned in the accommodating grooves, the first magnet on one clamping piece and the first magnet on the other clamping piece can attract each other.

According to a preferred embodiment, the two receiving grooves penetrate through each other in the width direction of the base body, and the mounting structure further comprises a limiting block, wherein the limiting block is located in the receiving groove and used for limiting the clamping piece in the width direction of the base body.

A damping toggle system comprises a mounting piece and the mounting structure; the mounting piece is provided with a mounting groove, the base body is arranged in the mounting groove, and the clamping piece can be abutted to the inner wall of the mounting groove.

The technical scheme of the embodiment of the utility model has at least the following advantages and beneficial effects:

the base body and the clamping block of the mounting structure are of split design, the material of the clamping block can be freely selected, the probability of structural abrasion is low when the mounting structure is used, the clamping piece is not easy to deform when impacted, the mounting position of the assembled structural member can be ensured not to deviate, and meanwhile, the clamping piece is convenient to replace, so that the assembly firmness and the safety of the mounting structure can be effectively improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of a mounting structure according to an embodiment of the present utility model;

FIG. 2 is a schematic view of an exploded view of a mounting structure according to an embodiment of the present utility model;

FIG. 3 is an enlarged schematic view of a portion of the structure shown at A in FIG. 2;

FIG. 4 is a schematic bottom view of the mounting structure according to the embodiment of the present utility model without the driving member;

FIG. 5 is a schematic cross-sectional view of section B-B of FIG. 4;

FIG. 6 is a schematic view of the structure of FIG. 5 after assembly of the driving member;

fig. 7 is a schematic bottom view of a mounting structure according to an embodiment of the present utility model;

FIG. 8 is a schematic cross-sectional structural view of section C-C of FIG. 7;

FIG. 9 is a schematic view of a first assembly structure of a mounting structure and a mounting member according to an embodiment of the present utility model;

FIG. 10 is a schematic view of a second assembly structure of a mounting structure and a mounting member according to an embodiment of the present utility model;

fig. 11 is a schematic cross-sectional structure of a mounting member in a length direction thereof according to an embodiment of the present utility model.

Icon: 100-mounting structure, 110-base body, 111-avoidance hole, 112-holding groove, 113-limiting block, 114-adjusting hole, 120-clamping piece, 121-half hole, 1211-first driving surface, 122-clamping groove, 1221-dismounting groove, 130-driving piece, 131-second driving surface, 140-first magnet, 200-mounting piece, 210-mounting groove and 220-chute.

Detailed Description

For a better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.

In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

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 utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Referring to fig. 1 to 11, a mounting structure 100 is applied to the assembly of hardware, i.e. the present assembly structure and a channel member, such as the assembly of a sliding door, a window, a damping member, etc. and a guide rail channel, or the application of other components assembled into the channel member by the mounting structure 100 is also applicable. In this embodiment, as shown in fig. 9, 10 and 11, the trough-shaped member is a mounting member 200, in which a mounting groove 210 is provided, and a chute 220 communicating with the mounting groove 210 is provided at the bottom. Note that, the width of the chute 220 is smaller than the width of the mounting groove 210. Of course, the channel member in this embodiment is illustrative, and in other embodiments, the channel member may take other forms and is not limited to the mount 200 shown in this embodiment.

Specifically, the mounting structure 100 includes a base 110, a clamping member 120, a driving member 130, and a restoring member, wherein: the clamping piece 120 is movably arranged on the base 110; the driving member 130 acts on the engaging member 120 so that the engaging member 120 can be separated from the base 110 in the width direction (specifically, the left and right directions as viewed in fig. 6) of the base 110; the restoring member acts on the catching member 120 so that the catching member 120 can always have a movement tendency close to the base 110 in the width direction of the base 110. As shown in fig. 2, 5 and 6, the base 110 is a main body member constituting the present mounting structure 100; the clamping piece 120 is used for moving in the width direction of the base 110 to realize the adjustment of the dimension of the base 110, namely the whole width direction of the installation structure 100, so as to be matched and correspondingly clamped into a groove-shaped component with corresponding dimension, thereby realizing the rapid installation of the base 110 and the groove-shaped component, and further realizing the indirect assembly of a part fixed on the base 110 and the groove-shaped component; as shown in fig. 9 and 10, the clamping member 120 may abut against the inner wall of the groove-shaped member after the clamping member 120 moves in the width direction of the base 110, and the friction force generated between the clamping member and the inner wall may be fixed, or the clamping member 120 may be limited by the groove-shaped member in the longitudinal direction after the clamping member moves in the width direction of the base 110, and may be a combination of the two fixed assembly modes.

When in use, the driving member 130 applies a force to the clamping member 120, the clamping member 120 moves outwards in the width direction of the base 110 against the movement trend provided by the action of the resetting member, so that the overall width of the base 110, namely the mounting structure 100, is increased, the clamping member 120 can be abutted to the inner wall of the mounting groove 210, and meanwhile, the overall width of the mounting structure 100 is larger than the width of the sliding groove 220, so that the base 110 and the components mounted on the base 110 can be quickly assembled with the mounting member 200; when the disassembly is required, the action of the driving member 130 on the clamping member 120 is removed, so that the clamping member 120 is retracted under the action of the resetting member, or moves inwards in the width direction of the base 110, so that the overall width of the base 110, i.e. the mounting structure 100, is reduced, and in particular, the overall width of the mounting structure 100 is smaller than the width of the sliding groove 220, so that the base 110 and the components mounted on the base 110 can be disassembled from the mounting member 200. The base body 110 and the clamping blocks are in split design, the material of the clamping blocks can be freely selected, the probability of structural abrasion during use is low, the clamping pieces 120 are not easy to deform during impact, the installation positions of assembled structural members can be guaranteed not to deviate, meanwhile, the clamping pieces 120 are convenient to replace, the reset pieces which are independently designed can guarantee the reset requirement of the clamping pieces 120 for a long time, so that the assembly firmness of the installation structure 100 and the reset capability of the clamping pieces 120 during disassembly after long-time use can be guaranteed, the use is convenient, and the service life of the installation structure 100 can be effectively prolonged.

As shown in fig. 2, in the present embodiment, two accommodating grooves 112 are provided on the base 110, and the two accommodating grooves 112 are correspondingly provided on two sides of the width direction of the base 110; the two clamping pieces 120 are slidably arranged in the two accommodating grooves 112 in a one-to-one correspondence manner; the resetting piece is a magnet assembly, the magnet assembly comprises a first magnet 140, and the first magnet 140 is arranged on the clamping piece 120; when the clamping members 120 are positioned in the accommodating groove 112, the first magnet 140 on one clamping member 120 and the first magnet 140 on the other clamping member 120 can attract each other. In this embodiment, alternatively, the two clamping members 120 are symmetrically disposed about the base 110, and in use, as shown in fig. 8, the two clamping members 120 extend outwards at the same time, so as to improve the assembly efficiency of the mounting structure 100 and the mounting member 200; and the structural design of the two clamping pieces 120 can improve the structural strength of the assembled mounting structure 100, so that the safety is high. The first magnet 140 here may be a permanent magnet. The opposite sides of the first magnets 140 of the two opposite clamping members 120 have opposite magnetic poles, and in use, the first magnets 140 of the two clamping members 120 attract each other, so that the two clamping members 120 approach each other without the application of force by the driving member 130, as shown in fig. 5 and 6, in which the mounting structure 100 is conveniently assembled into the mounting groove 210 or disassembled from the mounting groove 210 through the sliding groove 220.

Further, the two receiving grooves 112 penetrate each other in the width direction of the base 110, and the mounting structure 100 further includes a stopper 113, where the stopper 113 is located in the receiving groove 112 for limiting the clamping member 120 in the width direction of the base 110. Alternatively, the stopper 113 is disposed at a half cross section of the base 110 in the width direction, and when the driving member 130 does not apply a force to the engaging members 120, it is ensured that the two engaging members 120 are still symmetrically disposed with respect to the base 110 after abutting against the stopper 113.

In another embodiment, the reset element further includes a second magnet (not shown) disposed on the base 110, i.e. disposed in the receiving groove 112, and the first magnet 140 and the second magnet are capable of attracting each other when the clamping element 120 is disposed in the receiving groove 112. In this embodiment, the number of the engaging members 120 may be one, and accordingly, the number of the receiving grooves 112 is one, that is, provided at one side of the base 110 in the width direction thereof.

In this embodiment, as shown in fig. 2 and 3, a clamping groove 122 for clamping the first magnet 140 is provided on the inner side surface of the clamping member 120, and the first magnet 140 is embedded in the clamping groove 122. The clamping groove 122 here is adapted to the contour of the first magnet 140. Further, in order to facilitate the disassembly of the first magnet 140, a plurality of disassembly grooves 1221 are provided at the outer edge of the clamping groove 122, and the disassembly grooves 1221 are communicated with the clamping groove 122. In this embodiment, after the first magnet 140 is embedded in the clamping groove 122, the first magnet 140 can be at least partially exposed out of the clamping groove 122 through the dismounting groove 1221, so as to facilitate the dismounting of the first magnet 140.

In other embodiments, the restoring member may also be a tension spring (not shown) having one end connected to the clamping member 120 and the other end connected to the base 110.

In this embodiment, the clamping member 120 is slidably connected to the base 110, that is, the clamping member 120 is slidably assembled with the accommodating groove 112; the working end of the driving member 130 is located between the base 110 and the clamping member 120. The driving member 130 may be a telescopic member, such as an electric push rod, where the external dimensions allow. At this time, the fixed end of the electric push rod is connected to the accommodating groove 112, and the telescopic end, i.e. the working end, is connected to the clamping member 120.

In this embodiment, specifically, the driving member 130 includes at least a driving portion, the driving portion is cylindrical, and the working end of the driving member 130 is disposed at one end of the driving portion; the driving part is in threaded connection with the base body 110, a driving included angle is formed between the axial direction of the driving part and the width direction of the base body 110, and the driving included angle is 60-120 degrees; the clamping piece 120 is slidably disposed in the accommodating groove 112; the working end of the driving member 130 is located in the accommodating groove 112 and can act on the clamping member 120, so that the clamping member 120 slides in the accommodating groove 112 along the width direction of the base 110. Further, the base 110 is provided with an adjusting hole 114, and the adjusting hole 114 is communicated with the accommodating groove 112; the driving portion is embedded in the adjustment hole 114 and is screwed thereto. In this embodiment, the driving member 130 is a screw. Preferably, the driving angle between the axial direction of the driving member 130, i.e. the screw, and the width direction of the base 110 is 90 °, and the adjusting hole 114 is disposed on one half of the cross section of the base 110 in the width direction, i.e. the adjusting hole 114 is located on the symmetry plane of the base 110 in the width direction, at this time, the same driving member 130 can drive two clamping members 120 symmetrically disposed with respect to the base 110, which is efficient; the position of the limiting block 113 and the position of the adjusting hole 114 in the width direction of the base 110 are consistent, so that the driving member 130 can be ensured to synchronously drive the two clamping members 120 to move outwards. In other embodiments, the drive angle may also be 80 ° or 100 °, in which case the adjustment aperture 114 is an angled aperture. In this embodiment, the clamping member 120 on one side of the base 110 corresponds to at least one driving member 130 for controlling the same.

Further, a half hole 121 is formed in the inner side surface of the clamping member 120. The inner side surface here refers to the side surface of the engaging piece 120 facing the base 110. When the clamping member 120 is assembled to the accommodating chamber, the half hole 121 corresponds to the adjustment hole 114. Further, the clamping member 120 is provided with a first driving surface 1211, and the working end of the driving member 130 can slidably abut against the first driving surface 1211; or the working end of the driving piece 130 is provided with a second driving surface 131, and the clamping piece 120 can be in sliding abutting joint with the second driving surface 131; or the clamping piece 120 is provided with a first driving surface 1211, the working section of the driving piece 130 is provided with a second driving surface 131, and the first driving surface 1211 can be in sliding contact with the second driving surface 131. As shown in fig. 5 and 6, in the present embodiment, the clamping member 120 is provided with a first driving surface 1211, and the working section of the driving member 130 is provided with a second driving surface 131. The working end of the driver 130 can slidably abut the first driving surface 1211, i.e., the first driving surface 1211 and the second driving surface 131 can slidably abut; the first driving surface 1211 is here a conical surface or an inclined surface. The first driving surfaces 1211 are disposed at both ends of the half hole 121. In use, by rotating the driving member 130, the driving member is threaded with the adjusting hole 114 and moves upwards, and at this time, the first driving surface 1211 and the second driving surface 131 are in sliding fit, and as the driving member 130 continues to move upwards, the second driving surface 131 and the first driving surface 1211 slide relatively, so as to drive the clamping member 120 to slide outwards in the width direction of the base 110. As shown in fig. 6, the first driving surface 1211 and the second driving surface 131 are preferably tapered surfaces.

In other embodiments, the second driving surface 131 may not be disposed on the working end of the driving member 130, where the diameter of the working end of the driving member 130 is required to be smaller than the maximum distance between the first driving surfaces 1211 of the two opposite clamping members 120, and the diameter of the working end of the driving member 130 is required to be larger than the minimum distance between the first driving surfaces 1211 of the two opposite clamping members 120.

Likewise, in further embodiments, the working end of the driving member 130 is provided with a second driving surface 131. Specifically, the working end of the driving member 130, that is, the upper end of the screw rod, is provided with a conical portion, and the second driving surface 131 is a circumferential surface of the conical portion, where the diameter of the small end of the conical portion is required to be smaller than the maximum distance between the upper half holes 121 of the two opposite clamping members 120, that is, the small end of the conical portion can be embedded into the gap between the two half holes 121. In this embodiment, the small end of the conical portion is disposed upward.

In this embodiment, as shown in fig. 1, the base 110 is provided with avoiding holes 111 corresponding to the adjusting holes 114 one by one. Preferably, the relief hole 111 is coaxial with its corresponding adjustment hole 114. The relief hole 111 is used here to prevent interference with the driver 130.

The embodiment also provides a damping toggle system which is applied to a suspended sliding door or window and comprises a mounting piece 200 and the mounting structure 100; the mounting member 200 is provided with a mounting groove 210, the base 110 is disposed in the mounting groove 210, and the clamping member 120 can be abutted against the inner wall of the mounting groove 210. The damping toggle system is convenient to disassemble and assemble.

The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims

1. A mounting structure, characterized by comprising:

a base (110);

the clamping piece (120) is movably arranged on the base body (110); and

and a driving member (130) acting on the engaging member (120) so that the engaging member (120) can be away from the base body (110) in the width direction of the base body (110).

2. The mounting structure according to claim 1, further comprising a return member that acts on the engaging member (120) so that the engaging member (120) can always have a movement tendency close to the base body (110) in the width direction of the base body (110).

3. The mounting structure according to claim 1, wherein the clip (120) is slidably connected to the base (110);

the working end of the driving piece (130) is positioned between the base body (110) and the clamping piece (120).

4. A mounting structure according to any one of claims 1-3, wherein the base body (110) is provided with a receiving groove (112), and the clamping member (120) is slidably disposed in the receiving groove (112);

the working end of the driving piece (130) is positioned in the accommodating groove (112) and can act on the clamping piece (120) so that the clamping piece (120) slides in the accommodating groove (112) along the width direction of the base body (110).

5. The mounting structure according to claim 4, wherein the driving member (130) includes at least a driving portion having a cylindrical shape;

the driving part is in threaded connection with the base body (110), and a driving included angle is formed between the axial direction of the driving part and the width direction of the base body (110), and is 60-120 degrees.

6. The mounting structure according to claim 5, characterized in that the clamping member (120) is provided with a first driving surface (1211), and the working end of the driving member (130) is capable of sliding abutment with the first driving surface (1211); or alternatively

The working end of the driving piece (130) is provided with a second driving surface (131), and the clamping piece (120) can be in sliding abutting connection with the second driving surface (131); or alternatively

The clamping piece (120) is provided with a first driving surface (1211), the working section of the driving piece (130) is provided with a second driving surface (131), and the first driving surface (1211) can be in sliding abutting connection with the second driving surface (131).

7. The mounting structure according to claim 5, characterized in that the clamping member (120) is provided with a first driving surface (1211), and the working end of the driving member (130) is capable of sliding abutment with the first driving surface (1211);

the first driving surface (1211) is a conical surface or an inclined surface.

8. The mounting structure according to claim 5, characterized in that the base body (110) is provided with an adjustment hole (114), the adjustment hole (114) being in communication with the accommodation groove (112);

the driving part is embedded in the adjusting hole (114) and is in threaded connection with the adjusting hole.

9. The mounting structure according to claim 2, wherein the base body (110) is provided with a receiving groove (112), and the clamping member (120) is slidably disposed in the receiving groove (112);

the resetting piece is a magnet assembly, the magnet assembly comprises a first magnet (140) and a second magnet, the first magnet (140) is arranged on the clamping piece (120), and the second magnet is arranged on the base body (110);

when the clamping piece (120) is positioned in the accommodating groove (112), the first magnet (140) and the second magnet can attract each other.

10. The mounting structure according to claim 2, wherein two accommodating grooves (112) are provided on the base (110), the two accommodating grooves (112) being provided on both sides in the width direction of the base (110) in correspondence;

the two clamping pieces (120) are arranged in the two accommodating grooves (112) in a one-to-one corresponding sliding manner;

the resetting piece is a magnet assembly, the magnet assembly comprises a first magnet (140), and the first magnet (140) is arranged on the clamping piece (120);

when the clamping pieces (120) are positioned in the accommodating grooves (112), the first magnet (140) on one clamping piece (120) and the first magnet (140) on the other clamping piece (120) can attract each other.

11. The mounting structure according to claim 10, wherein the two receiving grooves (112) penetrate each other in a width direction of the base body (110), the mounting structure further comprising a stopper (113), the stopper (113) being located in the receiving groove (112) for restricting the engaging piece (120) in the width direction of the base body (110).

12. A damped toggle system, characterized by comprising a mount (200) and a mounting structure (100) according to any one of claims 1-11;

the mounting piece (200) is provided with a mounting groove (210), the base body (110) is arranged in the mounting groove (210), and the clamping piece (120) can be abutted to the inner wall of the mounting groove (210).