CN220081854U - Novel buckle for mounting electronic and electrical equipment and using structure thereof - Google Patents

Abstract

The utility model provides a novel buckle for electronic and electrical equipment installs and structure of using thereof, including buckle support base, buckle activity cardboard and elasticity fastener, buckle support base's one end is provided with the buckle fixation hook of inwards buckling, buckle fixation hook and the looks block of mounting base upper ledge, the other end is provided with draw-in hole and pothook connecting plate, form one end confined second draw-in groove between pothook connecting plate and the buckle support base, be provided with spacing separation blade on the buckle activity cardboard, draw-in bar and holder, the buckle activity cardboard passes through the cooperation of draw-in bar and second draw-in groove and connects on buckle support base, spacing separation blade falls into the card downthehole, elasticity fastener sets up in the draw-in hole, utilize elastic deformation power of elasticity fastener to push the holder on the buckle activity cardboard to clip the opposite side of mounting base. The utility model has simple structure, easy implementation, simple and convenient connection operation between the buckle and the mounting base, stable connection structure and convenient disassembly and assembly.

Description

Novel buckle for mounting electronic and electrical equipment and using structure thereof

Technical Field

The utility model relates to the technical field of electronic and electrical equipment installation, in particular to a novel buckle for electronic and electrical equipment installation and a using structure thereof.

Background

With the rapid development of modern electronic technology, the problem of installation and fixation of electronic and electric equipment is more and more important, and if the installation and fixation of the electronic and electric equipment are not good, the stability and the safety of the work of the electronic and electric equipment are directly affected. At present, an electronic and electric device is generally installed on a mounting base (such as a guide rail) and other structures by adopting a clamping structure which is integrated with or separated from the electronic and electric device, but the common problems are that: the installation of a plurality of screws leads to more accessories, difficult and complicated assembly and disassembly; the electronic and electrical equipment is easy to shake after clamping, and the stability is poor.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and provides a novel buckle with simple structure, high connection stability and convenient disassembly and assembly, and a using structure of the novel buckle, which can be used for installing electronic and electrical equipment on installation bases such as guide rails with edges, installation frames, installation plates and the like.

The utility model is realized by the following technical scheme:

the utility model provides a novel buckle for electronic and electrical equipment installs, including buckle support base, buckle activity cardboard and elasticity fastener, buckle support base is used for the connection fixed of electronic and electrical equipment, and fix novel buckle on the installation base that has protruding border under the cooperation of buckle activity cardboard and elasticity fastener, thereby realize the location fixed of electronic and electrical equipment on the installation base, buckle support base is provided with buckle fixed hook along length direction's one end, the both sides of installation base (like the guide rail) generally can extend protruding border, buckle fixed hook inwards buckles, form first draw-in groove with buckle support base between, first draw-in groove and the protruding border looks adaptation of installation base, buckle fixed hook is through the cooperation looks block of protruding border on first draw-in groove and the installation base on with one side of installation base, be provided with draw-in hole and pothook connecting plate on the other end of buckle support base, the draw-in hole with elasticity fastener looks adaptation, form the second draw-in groove of perpendicular to installation base direction between pothook and the buckle support base; the novel clamping device is characterized in that a limiting baffle plate, a sliding strip and a clamping piece are arranged on the clamping movable clamping plate, the sliding strip is matched with the second clamping groove, the clamping movable clamping plate is connected to the clamping support base through the matching of the sliding strip and the second clamping groove, the clamping piece is arranged at one end close to the clamping fixing hook, the limiting baffle plate bends towards one side of the clamping support base, when the sliding strip slides in the second clamping groove, the limiting baffle plate falls into the clamping hole on the clamping support base, the elastic clamping piece is arranged in the clamping hole, one end of the elastic clamping piece abuts against the clamping hole and is far away from the inner side face of one side of the clamping fixing hook, the other end of the elastic clamping piece abuts against the side face of the limiting baffle plate, which is far away from one side of the clamping fixing hook, and the elastic clamping piece pushes the limiting baffle plate to approach the mounting base through elastic deformation force, so that the clamping piece clamps the other side of the mounting base, and the clamping fixing hook and the clamping piece are matched to enable the novel positioning and fixing on the mounting base.

Further, the elastic clamping piece is an elastic frame and comprises a linear edge and an arc edge which are oppositely arranged, the arc edge protrudes outwards, a clamping block is arranged in a clamping hole on the clamping support base, a clamping piece clamping groove which is matched with the linear edge of the elastic clamping piece is formed between the clamping block and the inner wall of the clamping hole, the elastic clamping piece is clamped in the clamping piece clamping groove through the linear edge of the elastic clamping piece, one end of the elastic clamping piece is fixed and is abutted to the inner side surface of one side, far away from the clamping fixing hook, of the clamping hole, the arc edge of the elastic clamping piece is abutted to the side surface, far away from one side of the clamping fixing hook, of the limiting blocking piece, and the limiting blocking piece is pushed by utilizing elastic deformation force of the arc edge, so that the clamping piece is extruded to clamp the mounting base.

Further, the holder includes a plurality of parallel arrangement's grip block, when draw-bar and second draw-in groove cooperation form the fit clearance between grip block and the buckle support base, fit clearance and the protruding border looks adaptation of installation base, works as when the elasticity fastener promotes the holder to be close to the installation base, the protruding border of installation base stretches into in the fit clearance, the top of grip block supports and leans on the side of installation base, realizes novel buckle and the location between the installation base is fixed.

Further, the top of grip block has arc guide limit, makes things convenient for the cooperation between the protruding border of grip block and installation base, the grip block has four of parallel arrangement.

Further, a plurality of screw mounting holes are formed in the buckle support base, and the buckle support base is fixedly connected with the electronic and electric equipment through the screw mounting holes. The second clamping groove on the buckle support base is provided with a closed end along the length direction, the closed end is located on the second clamping groove and is close to one end of the installation base, and when the buckle movable clamping plate slides on the buckle support base through the cooperation of the sliding strip and the second clamping groove, the buckle movable clamping plate is limited through the closed end on the second clamping groove.

Further, the clamping piece comprises four clamping plates which are arranged in parallel, the four clamping plates are divided into a left group and a right group, and an avoidance groove is formed between the two groups of clamping plates for screw installation operation of screw installation holes.

Further, two clamping hook connecting plates are arranged on two sides of the clamping buckle support base respectively, each clamping hook connecting plate is provided with two second clamping grooves, the number and the positions of the sliding strips are corresponding to those of the second clamping grooves, and a clamping inlet is formed between the two sliding strips on the same side, so that clamping fit between the clamping buckle support base and the clamping buckle movable clamping plate is facilitated.

Further, the limiting baffle plate is arranged at the middle position of the buckle movable clamping plate, and the limiting baffle plate and the clamping piece are sequentially arranged along the direction close to the mounting base.

Further, the sliding strips are integrally arranged on two sides of the buckle movable clamping plate through the side connecting plates respectively. The movable clamping plate of the buckle is provided with a handle at one end far away from the clamping piece, so that the movable clamping plate of the buckle is convenient to operate, and the novel buckle is fixed and separated from the installation base in a positioning manner.

The utility model provides a use structure for novel buckle of electronic and electrical equipment installation, the installation base is the guide rail, the protruding border is located the both sides of guide rail, buckle fixed hook and the protruding border looks lock of guide rail one side, the holder is used in on protruding border and the side of guide rail opposite side to realize novel buckle and the location of guide rail fixed.

The novel buckle comprises the buckle bracket base, the buckle movable clamping plate and the elastic clamping piece, and only the buckle movable clamping plate is required to slide during installation, adjustment and disassembly, so that the novel buckle is simple in structure, reasonable in design and easy to implement; the elastic sliding lock catch structure is adopted, the connection operation between the elastic sliding lock catch structure and the installation base (such as a guide rail) with the protruding edge is simple and convenient, the pressing effect of the elastic clamping piece on the movable clamping plate of the buckle is utilized, the connection stability of the buckle and the installation base is improved, and meanwhile, the elastic sliding lock catch structure is convenient to install, detach and replace in installation positions and is suitable for the installation of various electronic and electric equipment.

Drawings

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

Fig. 2 is an exploded view of an embodiment of the present utility model.

Fig. 3 is an exploded view of another view of an embodiment of the present utility model.

Fig. 4 is a schematic side view of an embodiment of the present utility model.

Fig. 5 is a schematic structural diagram of a movable clip board of a buckle in an embodiment of the utility model.

Fig. 6 is a schematic diagram of a top view of an embodiment of the present utility model.

Fig. 7 is an exploded view of the structure of fig. 6.

Fig. 8 is a schematic view of the overall installation structure of the embodiment of the present utility model.

Reference numerals: 1-a buckle bracket base; 2-a buckle movable clamping plate; 3-an elastic clamping piece; 4-mounting a base; 5-an electronic electrical device; 11-a snap-fit securing hook; 12-a first clamping groove; 13-a clamping hook connecting plate; 14-a second clamping groove; 15-closed end; 16-clamping holes; 17-clamping blocks; 18-clamping piece clamping grooves; 19-a screw mounting hole; 21-side connection plates; 22-slide bar; 23-limiting baffle plates; 24-clamping plates; 25-handle; 26-avoiding grooves; 27-a snap-fit inlet; 28-fit clearance; 31-straight edges; 32-arc edges; 41-projecting edge.

Detailed Description

The utility model provides a novel buckle for electronic and electrical equipment installation, as shown in fig. 1-4, including buckle support base 1, buckle activity cardboard 2 and elastic clamping piece 3, buckle support base 1 is used for the connection fixed of electronic and electrical equipment 5, and fix novel buckle on the installation base 4 that has protruding border 41 under the cooperation of buckle activity cardboard 2 and elastic clamping piece 3, thereby realize the location fixed of electronic and electrical equipment 5 on installation base 4, buckle support base 1 is provided with buckle fixed hook 11 along length direction's one end, the both sides of installation base 4 (such as the guide rail) generally can extend protruding border 41, buckle fixed hook 11 inwards buckle, form first draw-in groove 12 with buckle support base 1 between, first draw-in groove 12 and the protruding border 41 looks adaptation of installation base 4, buckle fixed hook 11 is through the cooperation of first draw-in groove 12 with the one side looks block of installation base 4 on the protruding border 41, be provided with card hole 16 and hook connecting plate 13 on the other end of buckle support base 1, card hole 16 and elastic clamping piece 3 looks adaptation, buckle 13 and the second draw-in groove 14 that the second end 14 is close to the second end 14 that the direction of installation base 14 is close to it along length direction that the second draw-in groove 14 is formed between the second base 14; be provided with spacing separation blade 23, draw runner 22 and holder on the buckle activity cardboard 2, draw runner 22 with second draw-in groove 14 looks adaptation, buckle activity cardboard 2 passes through draw runner 22 is connected with the cooperation of second draw-in groove 14 on the buckle support base 1, and pass through blind end 15 on the second draw-in groove 14 is spacing, the holder setting is being close to the one end of buckle fixation hook 11, spacing separation blade 23 bends to one side of buckle support base 1, when draw runner 22 slides in the second draw-in groove 14 limit separation blade 23 falls into on the buckle support base 1 in the draw-in hole 16 internal motion along with the slip of draw runner 22, elastic clamping member 3 set up in the draw-in hole 16, elastic clamping member 3's one end support is kept away from in the draw-in hole 16 on the medial surface of buckle fixation hook 11 one side, the other end support is kept away from on limit separation blade 23 on the side of fixation hook 11, elastic clamping member 3 is through its elastic deformation push 23 to promote in the draw-in groove 16 in motion in groove 16, and then moves the clamp 4 at the clamping base 4, thereby makes the clamp of the novel clamping board to install to the clamp and fix the clamp to the base to the clamp and fix the clip 2. Simultaneously, the elastic clamping piece 3 is deformed by pulling the movable clamping plate 2 of the buckle, so that the stress between the clamping piece and the mounting base 4 (guide rail) is loosened, and the mounting position of the novel buckle on the mounting base 4 can be conveniently and rapidly adjusted and the novel buckle can be detached.

As one embodiment, as shown in fig. 3, the elastic clamping member 3 is an elastic frame, which includes a straight edge 31 and an arc edge 32 that are disposed opposite to each other, the two opposite sides are also straight edges 31, and the arc edge 32 protrudes outwards, so that a certain elastic deformation force can be given to the elastic clamping member 3, and in particular, the arc edge 32 can provide a certain elastic force. As shown in fig. 6 and 7, a clamping block 17 is disposed in a clamping hole 16 on the clamping bracket base 1, the clamping block 17 is connected to the clamping bracket base 1, a clamping piece clamping groove 18 adapted to a linear edge 31 of the elastic clamping piece 3 is formed between the clamping block 17 and an inner wall of the clamping hole 16, the elastic clamping piece 3 is clamped into the clamping piece clamping groove 18 through the linear edge 31 thereof to fix and realize that one end of the elastic clamping piece 3 abuts against an inner side surface of the clamping hole 16, which is far away from the clamping fixed hook 11, and an arc edge 32 of the elastic clamping piece 3 abuts against a side surface of the limiting blocking piece 23, which is far away from the clamping fixed hook 11, so that the limiting blocking piece 23 is pushed by using elastic deformation force of the arc edge 32, and the clamping piece is extruded to clamp the mounting base 4. The elastic clamping member 3 may be made of a metal material, and in this embodiment, is a metal frame structure.

As one embodiment, as shown in fig. 5, the clamping member includes a plurality of clamping plates 24 arranged in parallel, when the sliding strip 22 is matched with the second clamping groove 14, a fit gap 28 is formed between the clamping plates 24 and the buckle bracket base 1, the fit gap 28 is matched with a protruding edge 41 of the installation base 4, when the sliding strip 22 abuts against the closed end 15 of the second clamping groove 14, the protruding edge 41 of the installation base 4 stretches into the fit gap 28, and the top end of the clamping plate 24 abuts against the side surface of the installation base 4, so that positioning and fixing between the novel buckle and the installation base 4 are realized.

In this embodiment, the top end of the clamping plate 24 has an arc guiding edge, which can be designed into an arc triangle-like shape as shown in the figure, so as to facilitate the cooperation between the clamping plate 24 and the protruding edge 41 of the mounting base 4, and the clamping plate 24 has four parallel arranged clamping plates.

As shown in fig. 1 and 8, the fastening bracket base 1 is provided with a plurality of screw mounting holes 19, and the fastening bracket base 1 is fixedly connected with the electronic and electrical equipment 5 through the screw mounting holes 19. In order to make the distribution of a plurality of screw mounting holes 19 reasonable, the position department of grip block 24 also is provided with screw mounting hole 19, and for this reason, divide into two left and right sides two by two with four grip block 24, be provided with between two sets of grip blocks 24 and dodge groove 26, dodge the groove 26 and the position of screw mounting hole 19 is relative, makes things convenient for the screw installation operation of screw mounting hole 19.

As one embodiment, as shown in fig. 3, two hook connecting plates 13 are respectively disposed on two sides of the buckle bracket base 1, each hook connecting plate 13 is provided with two second clamping grooves 14 having closed ends 15, the number and positions of the sliding strips 22 correspond to those of the second clamping grooves 14, and a clamping inlet 27 is formed between the two sliding strips 22 on the same side, so as to facilitate the clamping fit between the buckle bracket base 1 and the buckle movable clamping plate 2.

In this embodiment, the limiting baffle 23 is disposed at the middle position of the movable clamping plate 2, and the limiting baffle 23 and the clamping member are sequentially disposed along the direction close to the mounting base 4. The sliding strips 22 are integrally arranged on two sides of the buckle movable clamping plate 2 through the side connecting plates 21 respectively, and the sliding strips 22 can be bent inwards. The two clamping hook connecting plates 13 and the clamping blocks 17 are uniformly and integrally arranged on the clamping bracket base 1.

In this embodiment, for convenient operation, buckle activity cardboard 2 is kept away from be provided with handle 25 on the one end of holder, exert the power of keeping away from installation base 4 to buckle activity cardboard 2 through grabbing handle 25, make elastic clamping piece 3 deformation, buckle activity cardboard 2 loosen installation base 4 to realize the breaking away from of novel buckle and installation base 4.

The utility model provides a use structure for novel buckle of electronic and electrical equipment installation, the installation base 4 is the guide rail, protruding border 41 is located the both sides of guide rail, buckle fixation hook 11 and the protruding border 41 looks lock of guide rail one side, the holder is used in on protruding border 41 and the side of guide rail opposite side to realize novel buckle and the location of guide rail is fixed.

When the novel buckle is assembled, the buckle bracket base 1 and the buckle movable clamping plate 2 are mutually matched, the sliding strips 22 on the two sides of the buckle movable clamping plate 2 slide into the second clamping groove 14, the limiting baffle piece 23 falls into the clamping hole 16 on the buckle bracket base 1, the elastic clamping piece 3 is placed in the clamping hole 16 on the buckle bracket base 1 when the sliding strips 22 are abutted and limited on the closed end 15 of the second clamping groove 14, one end of the elastic clamping piece 3 abuts against the inner side surface of the clamping hole 16, and the other end abuts against the outer side surface of the limiting baffle piece 23, so that the novel buckle is assembled.

Taking the installation base 4 as a guide rail as an example, when the utility model is used, the electronic and electric equipment 5 is fixed on the buckle bracket base 1 through a screw, and then the buckle bracket base 1 spans the guide rail 4, so that the buckle fixing hook 11 is clamped with the convex edge 41 at one side of the guide rail 4; then grasp handle 25 and pull buckle activity cardboard 2 to the direction of keeping away from guide rail 4, make elastic clamping piece 3 elastic deformation, after guide rail 4 put in place, loosen handle 25 and reset, the opposite side of guide rail 4 is cliied to the clamping piece under the extrusion effect of elastic clamping piece 3, the protruding border 41 of this side of guide rail 4 falls into the cooperation clearance 28 between clamping piece and the buckle support base 1, the top of grip block 24 supports and leans on the side of guide rail 4, in this way, the protruding border 41 of guide rail 4 both sides is centre gripping respectively in first draw-in groove 12 and cooperation clearance 28, and press from both sides tightly through elastic clamping piece 3, novel buckle just realized with the guide rail 4 between the location fix.

When the electronic and electric equipment 5 needs to be moved at the installation position on the guide rail 4, the handle 25 is only required to be pulled, the movable clamping plate 2 of the buckle slides a little in the direction away from the guide rail 4, the elastic clamping piece 3 is extruded and deformed, the clamping piece loosens one side of the guide rail 4, after the movable clamping plate 2 of the buckle is loosened after the clamping piece is moved to a proper position on the base 1 of the buckle bracket, the elastic clamping piece 3 extrudes the movable clamping plate 2 of the buckle to move towards the guide rail 4 under the action of the elastic deformation force, the clamping piece and the fixed clamping hook 11 of the buckle clamp tightly clamp the guide rail 4 again, and the novel buckle is fixed on the guide rail 4 again.

When the electronic and electric equipment 5 needs to be disassembled, the handle 25 is only required to be pulled, the movable clamping plate 2 of the buckle slides in the direction away from the guide rail 4, and the convex edges 41 on the two sides of the guide rail 4 are separated from the first clamping groove 12 and the clamping piece respectively.

When the mounting base 4 is not a guide rail, the method is the same as above, and only the protruding edges 41 on two sides of the mounting base 4 need to be clamped.

The foregoing detailed description is directed to embodiments of the utility model which are not intended to limit the scope of the utility model, but rather to cover all modifications and variations within the scope of the utility model.

Claims (10)

1. The novel buckle for mounting the electronic and electric equipment is characterized by comprising a buckle support base, a buckle movable clamping plate and an elastic clamping piece, wherein the buckle support base is used for connecting and fixing the electronic and electric equipment, one end of the buckle support base in the length direction is provided with a buckle fixing hook which is bent inwards, a first clamping groove is formed between the buckle fixing hook and the buckle support base, the first clamping groove is matched with the protruding edge of the mounting base, the buckle fixing hook is matched with one side of the mounting base through the matching of the first clamping groove and the protruding edge of the mounting base, the other end of the buckle support base is provided with a clamping hole and a clamping hook connecting plate, the clamping hole is matched with the elastic clamping piece, and a second clamping groove perpendicular to the mounting base is formed between the clamping hook connecting plate and the buckle support base; the novel buckle is characterized in that a limiting baffle plate, a sliding strip and a clamping piece are arranged on the buckle movable clamping plate, the sliding strip is matched with the second clamping groove, the buckle movable clamping plate is connected to the buckle support base through the matching of the sliding strip and the second clamping groove, the clamping piece is arranged at one end close to the buckle fixing hook, the limiting baffle plate bends towards one side of the buckle support base, when the sliding strip slides in the second clamping groove, the limiting baffle plate falls into the clamping hole on the buckle support base, the elastic clamping piece is arranged in the clamping hole, one end of the elastic clamping piece abuts against the clamping hole and is far away from the inner side face of one side of the buckle fixing hook, the other end of the elastic clamping piece abuts against the limiting baffle plate and is far away from the side face of one side of the buckle fixing hook, and the elastic clamping piece pushes the clamping piece to clamp the other side of the installation base through elastic deformation force, so that the novel buckle is positioned and fixed on the installation base.

2. The novel fastener for mounting electronic and electrical equipment according to claim 1, wherein the elastic fastener is an elastic frame, the elastic frame comprises a linear edge and an arc edge which are oppositely arranged, the arc edge protrudes outwards, a clamping block is arranged in a clamping hole on the fastener support base, a fastener clamping groove matched with the linear edge of the elastic fastener is formed between the clamping block and the inner wall of the clamping hole, the elastic fastener is clamped into the fastener clamping groove through the linear edge of the elastic fastener to fix and enable one end of the elastic fastener to abut against the inner side surface of the clamping hole, which is far away from one side of the fastener fixing hook, the arc edge of the elastic fastener abuts against the side surface of the limiting baffle, which is far away from one side of the fastener fixing hook, and the limiting baffle is pushed by utilizing elastic deformation force of the arc edge, so that the clamping piece is extruded to clamp the mounting base.

3. The novel buckle for mounting electronic and electrical equipment according to claim 1, wherein the clamping piece comprises a plurality of clamping plates which are arranged in parallel, a fit gap is formed between the clamping plates and the buckle bracket base when the sliding strip is matched with the second clamping groove, the fit gap is matched with the protruding edge of the mounting base, when the elastic clamping piece pushes the clamping piece to approach the mounting base, the protruding edge of the mounting base stretches into the fit gap, and the top end of the clamping plate abuts against the side surface of the mounting base, so that positioning fixation between the novel buckle and the mounting base is realized.

4. A novel buckle for mounting electronic and electrical equipment according to claim 3, wherein the top end of the clamping plate is provided with an arc-shaped guiding edge, so that the clamping plate is convenient to be matched with the convex edge of the mounting base, and the clamping plate is provided with four clamping plates which are arranged in parallel.

5. The novel buckle for mounting electronic and electrical equipment according to claim 1, wherein a plurality of screw mounting holes are formed in the buckle support base, and the buckle support base is fixedly connected with the electronic and electrical equipment through the screw mounting holes; the second clamping groove is provided with a closed end along the length direction, the closed end is located on the second clamping groove and close to one end of the mounting base, and the buckle movable clamping plate is limited through the closed end on the second clamping groove when sliding on the buckle support base.

6. The novel buckle for mounting electronic and electrical equipment according to claim 5, wherein the clamping member comprises four clamping plates which are arranged in parallel, the four clamping plates are divided into a left group and a right group, and an avoidance groove is formed between the two groups of clamping plates for screw mounting operation of the screw mounting holes.

7. The novel fastener for mounting electronic and electrical equipment according to claim 1, wherein two clamping hook connecting plates are respectively arranged on two sides of the fastener bracket base, each clamping hook connecting plate is provided with two second clamping grooves, the number and the positions of the sliding strips correspond to those of the second clamping grooves, and a clamping inlet is formed between the two sliding strips on the same side, so that clamping fit between the fastener bracket base and the movable clamping plate of the fastener is facilitated.

8. The novel buckle for mounting electronic and electrical equipment according to claim 7, wherein the limiting baffle is arranged at the middle position of the movable clamping plate of the buckle, and the limiting baffle and the clamping piece are sequentially arranged along the direction close to the mounting base.

9. The novel fastener for mounting electronic and electrical equipment according to claim 1, wherein the sliding strips are integrally arranged on two sides of the movable clamping plate of the fastener through side connecting plates respectively; the movable clamping plate of the buckle is provided with a handle at one end far away from the clamping piece, so that the movable clamping plate of the buckle is convenient to operate.

10. A use structure of a novel buckle for installation of electronic and electric equipment according to any one of claims 1 to 9, wherein the installation base is a guide rail, the convex edges are positioned on two sides of the guide rail, the buckle fixing hooks are buckled with the convex edges on one side of the guide rail, and the clamping pieces act on the convex edges and the side surfaces on the other side of the guide rail, so that positioning and fixing of the novel buckle and the guide rail are realized.