Limiting clamp

Abstract

The utility model provides a limiting clamp which comprises a bearing piece, a left clamping plate, a right clamping plate and a pressing piece, and the left clamping plate is rotatably connected with the bearing piece; the middle part of the right clamping plate is rotatably connected with the bearing piece; the pressure applying piece is arranged above the bearing piece and is connected with the bearing piece through a threaded connecting piece; wherein the left side of the pressure applying piece abuts against the left clamping plate, the right side of the pressure applying piece abuts against the right clamping plate, and the bottom of the left clamping plate and the bottom of the right clamping plate are both located below the bearing piece; when the threaded connecting piece drives the pressure applying piece to get close to the bearing piece, the left clamping plate and the right clamping plate rotate under the abutting action of the pressure applying piece, so that the distance between the bottom of the left clamping plate and the bottom of the right clamping plate is shortened, and the bottom of the left clamping plate and the bottom of the right clamping plate are clamped on a rail.

Description

Technical Field

[0001] The utility model relates to the technical field of track limiting, in particular to a limiting clip. Background Art

[0002] When sliding windows and sliding doors are in use, it is often necessary to limit the position of the doors and windows. Generally, a limit lock is set on the door and window slide rail to limit the position of the doors and windows.

[0003] Most of the existing limit locks lock the limit lock from the side of the track. For example, the utility model patent with the application number CN202122108662.9 discloses an anti-slip sliding window limit lock, which includes a sliding window lock catch with an N-shaped structure. A screw hole is provided in the middle of the side of the sliding window lock catch. The anti-slip locking screw is installed in the screw hole of the sliding window lock catch. The sliding window lock catch is locked by rotating the anti-slip locking screw, so as to achieve the purpose of limiting the position of the sliding window. However, since the locking screw is operated from the side and the space on the side of the track is limited, it is inconvenient for installation. Moreover, this scheme locks by the anti-slip locking screw pressing against the side of the track, which is easy to damage the side of the track.

[0004] The utility model patent with the application number CN202122472136.0 discloses a pliers-type clamping sliding window limit lock. The lock catch pressing plate is stuck on the sliding window lock catch and the distance can be adjusted. The locking plate is installed in the slot hole of the sliding window lock catch through a locking screw. The locking plate is adjusted up and down by rotating the locking screw, so that the sliding window lock catch and the locking plate form a lever pliers type to clamp the sliding window track, so as to achieve the effect of limiting the position of the sliding window. The advantage of this scheme is that the locking screw can be operated from above, which is more convenient. Moreover, the lock catch pressing plate can adjust the distance on the sliding window lock catch to adapt to tracks of different thicknesses. In addition, by clamping the track with the locking plate, damage to the side of the track can be avoided. However, since there are screw holes on the locking plate, the locking plate is relatively wide. And the locking plate needs to abut against the side of the track to clamp the track. Therefore, this scheme is not applicable to thicker tracks, and the manufacturing cost of this scheme is relatively high. Summary of the Utility Model

[0005] An object of the utility model is to provide a limiting clip. When the pressing member approaches the supporting member, the pressing member enlarges the distance between the upper parts of the left clamping plate and the right clamping plate, so that the distance between the bottom parts of the left clamping plate and the right clamping plate is reduced. Thus, the bottom parts of the left clamping plate and the right clamping plate are clamped on the track to block the sliding of the window.

[0006] Another object of the utility model is to provide a limiting clip. Not only can the threaded connecting member be operated from above, making the operation more convenient, but also it can be applicable to thicker tracks, with a wider application range. And because the movement principle of this scheme is simpler, it is beneficial to design an embodiment with a low manufacturing cost.

[0007] Another object of the present utility model is to provide a limit clip, wherein the left clamping plate and the right clamping plate are supported by a supporting member to prevent them from falling downward, and the supporting member supports the rotation of the left clamping plate and the right clamping plate.

[0008] Another object of the present utility model is to provide a limit clip, wherein compared with the conventional rotating connection method of a rotating shaft, the present embodiment adopts a method of clamping connection with a strip-shaped hole to achieve rotatable connection, which not only simplifies the structure, but also reduces the number of parts, improves the assembly efficiency, and reduces the manufacturing cost.

[0009] Another object of the present utility model is to provide a limit clip, wherein the length of the second strip-shaped hole is less than the width of the abutting portion. After the abutting portion passes through the second strip-shaped hole, it is clamped by the second strip-shaped hole, and the abutting portion is not easily separated from the second strip-shaped hole downward and is supported by the supporting member.

[0010] Another object of the present utility model is to provide a limit clip, which satisfies the condition: (L1 - L3) / 2 < L2 - L3, so that the abutting portion can be supported by the supporting member after obliquely passing through the second strip-shaped hole.

[0011] Another object of the present utility model is to provide a limit clip, wherein the shape of the abutting portion is set to be trapezoid-like with a smaller upper part and a larger lower part, so as to ensure that the width of the lower edge of the abutting portion is as wide as possible on the premise that the abutting portion smoothly passes through the second strip-shaped hole, thereby preventing the abutting portion from separating from the second strip-shaped hole.

[0012] Another object of the present utility model is to provide a limit clip, wherein the pressing member is configured as a trapezoidal block with a larger upper part and a smaller lower part. When the pressing member moves downward driven by a threaded connecting member, the left and right side surfaces of the pressing member respectively press against the top of the left clamping plate and the top of the right clamping plate, so that the distance between the top of the left clamping plate and the top of the right clamping plate is enlarged, and the left clamping plate and the right clamping plate rotate under the supporting action of the supporting member, so that the distance between the bottom of the left clamping plate and the bottom of the right clamping plate is reduced, thereby achieving the effect of clamping the track.

[0013] Another object of the present utility model is to provide a limit clip, wherein chamfers are respectively provided on the sides of the tops of the left clamping plate and the right clamping plate facing the pressing member, so as to reduce the friction force between the pressing member and the left clamping plate and the right clamping plate, make the up and down movement of the pressing member smoother, not easily get stuck, and can reduce the contact stress to prevent the pressing member from being damaged.

[0014] Another object of the present utility model is to provide a limit clip, wherein the upper ends of the left clamping plate and the right clamping plate are inclined outward slopes. When the pressing member moves downward, the two sides of the pressing member press against the left clamping plate and the right clamping plate, so that the distance between the upper ends of the left clamping plate and the right clamping plate is increased, and the distance between the bottom of the left clamping plate and the bottom of the right clamping plate is reduced, and then the limit clip is clamped to the window track to block the sliding of the window.

[0015] Another object of the present utility model is to provide a limiting clip, wherein both the left clamping plate and the right clamping plate are bent twice, and the connecting portion is bent inward relative to the clamping portion, so that the distance between the first strip-shaped hole and the second strip-shaped hole is narrowed on the premise of keeping the L4 unchanged, thereby enabling the supporting member to be narrowed while ensuring that the structural strength meets the requirements, so as to avoid interference with the adjacent window screen frame.

[0016] Another object of the present utility model is to provide a limiting clip, wherein shaft limiting is adopted to make the left clamping plate and the right clamping plate rotate more smoothly based on the shaft; and since the left clamping plate and the right clamping plate will not separate from the supporting member under the limiting action of the shaft, it is not necessary to worry about the left clamping plate and the right clamping plate falling off during the installation of the limiting clip on the track, and the installation is more convenient.

[0017] To achieve at least one of the above objects, the present utility model provides a limiting clip, which includes a supporting member, a left clamping plate, a right clamping plate and a pressing member. The left clamping plate is rotatably connected to the supporting member; the right clamping plate is rotatably connected to the supporting member; the pressing member is arranged above the supporting member and is connected to the supporting member through a threaded connector; wherein, the left side of the pressing member abuts against the left clamping plate, and the right side abuts against the right clamping plate. The bottoms of the left clamping plate and the right clamping plate are both located below the supporting member; when the threaded connector drives the pressing member to approach the supporting member, the left clamping plate and the right clamping plate rotate under the pressing action of the pressing member, so that the distance between the bottom of the left clamping plate and the bottom of the right clamping plate is reduced.

[0018] In some embodiments, the supporting member is configured as a plate-like structure. A first strip-shaped hole is formed on the left side of the supporting member. The left clamping plate passes through the first strip-shaped hole and is supported by the supporting member. The left clamping plate can rotate in the first strip-shaped hole to realize the rotatable connection between the left clamping plate and the supporting member; a second strip-shaped hole is formed on the right side of the supporting member. The right clamping plate passes through the second strip-shaped hole and is supported by the supporting member. The right clamping plate can rotate in the second strip-shaped hole to realize the rotatable connection between the right clamping plate and the supporting member.

[0019] Furthermore, both the left clamping plate and the right clamping plate include a clamping portion arranged at the bottom, a butting portion arranged at the top, and a connecting portion connecting the butting portion and the clamping portion. The width of the connecting portion is smaller than the width of the butting portion. The length of the second strip-shaped hole is smaller than the width of the butting portion. The connecting portion passes through the second strip-shaped hole, and the butting portion is supported by the supporting member.

[0020] Further, the width of the connecting portion is set as L3, the width of the abutting portion is set as L1, and the length of the second strip-shaped hole is set as L2, and the condition is satisfied: (L1 - L3) / 2 < L2 - L3, so that the abutting portion can pass through the second strip-shaped hole obliquely and then be supported by the supporting member.

[0021] Further, the shape of the abutting portion is set to be trapezoid-like with a smaller upper part and a larger lower part.

[0022] In some embodiments, a first rotating shaft is arranged on the left side of the supporting member, and a second rotating shaft is arranged on the right side. The first rotating shaft limits the middle part of the left clamping plate, and the left clamping plate can rotate based on the first rotating shaft; the second rotating shaft limits the middle part of the right clamping plate, and the right clamping plate can rotate based on the second rotating shaft.

[0023] In some embodiments, the pressing member is configured as a trapezoidal block with a larger upper part and a smaller lower part, and both sides of the pressing member respectively abut against the top of the left clamping plate and the top of the right clamping plate.

[0024] Further, both the left clamping plate and the right clamping plate are straight plates, and the left clamping plate and the right clamping plate are symmetric structures; a chamfer or a rounded corner is arranged on the side of the top of the left clamping plate facing the pressing member, and a chamfer or a rounded corner is arranged on the side of the top of the right clamping plate facing the pressing member.

[0025] In some embodiments, the pressing member is configured as a plate-like structure, and both the left clamping plate and the right clamping plate are bent plate structures. When the lower end of the left clamping plate is in a vertical state, the upper end of the left clamping plate is in a state of inclining outwards; when the lower end of the right clamping plate is in a vertical state, the upper end of the right clamping plate is in a state of inclining outwards.

[0026] In some embodiments, the pressing member is configured as a plate-like structure, and both the left clamping plate and the right clamping plate are bent plate structures and are symmetrically arranged; both the left clamping plate and the right clamping plate are bent twice. Among them, the connecting portion is bent inwards relative to the clamping portion, and the abutting portion is bent outwards relative to the connecting portion. When the clamping portion is in a vertical state, the abutting portion is in a state of inclining outwards; the position where the abutting portion of the left clamping plate is bent relative to the connecting portion is located at the corresponding position of the first strip-shaped hole.

[0027] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present invention. The above various technical features of the present invention can be combined arbitrarily, and these and other objects of the present invention will be fully embodied by the following detailed description and the drawings.

[0028] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present invention. Brief Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0030] Figure 1 is a schematic structural diagram of the limit clip of the first embodiment of the present invention clamped on the track;

[0031] Figure 2 is an exploded view of the limit clip of the first embodiment of the present invention;

[0032] Figure 3 is a schematic structural diagram of the supporting member and the right clamping plate of the first embodiment of the present invention;

[0033] Figure 4 is a schematic diagram of the assembly process of the right clamping plate of the first embodiment of the present invention;

[0034] Figure 5 is a cross-sectional view of the limit clip when the pressing member is in different positions in the first embodiment of the present invention;

[0035] Figure 6 is an assembly schematic diagram of the clamping gasket in the first embodiment of the present invention;

[0036] Figure 7 is a schematic structural diagram of the limit clip of the second embodiment of the present invention;

[0037] Figure 8 is an exploded view of the limit clip of the second embodiment of the present invention;

[0038] Figure 9 is an assembly schematic diagram of the supporting member and the right clamping plate of the second embodiment of the present invention;

[0039] Figure 10 is a cross-sectional view of the limit clip when the pressing member is in different positions in the second embodiment of the present invention;

[0040] Figure 11 is a schematic structural diagram of the limit clip of the third embodiment of the present invention;

[0041] Figure 12 is an exploded view of the limit clip of the third embodiment of the present invention;

[0042] Figure 13 is an assembly schematic diagram of the supporting member and the right clamping plate of the third embodiment of the present invention;

[0043] Figure 14 It is a cross-sectional view of the limit clip and the track when the pressing member of the third embodiment of the present utility model is in different positions;

[0044] Figure 15 It is a schematic structural view of the limit clip of the fourth embodiment of the present utility model;

[0045] Figure 16 It is an exploded view of the limit clip of the fourth embodiment of the present utility model;

[0046] Figure 17 It is a cross-sectional view of the limit clip when the pressing member of the fourth embodiment of the present utility model is in different positions.

[0047] Reference numerals:

[0048] 100, limit clip; 200, track; 1, supporting member; 11, first elongated hole; 12, second elongated hole; 13, threaded connection hole; 14, top plate; 15, first connecting plate; 151, connecting through hole; 16, second connecting plate; 161, threaded hole; 17, shoulder screw; 171, first rotating shaft; 172, second rotating shaft; 21, left clamping plate; 22, right clamping plate; 23, clamping portion; 24, abutting portion; 25, connecting portion; 26, arc-shaped depression; 3, pressing member; 31, counterbore; 32, through hole; 4, threaded connecting piece; 5, clamping gasket. Specific embodiments

[0049] In the description of the present utility model, the orientation or positional relationship indicated by the terms "inner", "outer", "horizontal", "vertical", "upper", "lower", "top", "bottom", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model rather than requiring the present utility model to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0050] In the description of the specification of the present utility model, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0051] In the description of the specification of the present utility model, unless otherwise clearly defined and limited, terms such as "connection" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or a connection that allows mutual communication; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0052] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. The technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those skilled in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0053] The locking screw of the existing limit lock needs to be operated from the side, but the space on the side of the track is limited, which brings inconvenience to installation. The utility model patent with the application number CN202122472136.0 discloses a pliers-type clamping sliding window limit lock. Although the locking screw can be operated from above, since there are screw holes provided on its locking plate, the locking plate is relatively wide, and the locking plate needs to abut against the side of the track to clamp the track. Therefore, this solution is not applicable to thicker tracks, and the manufacturing cost of this solution is relatively high.

[0054] To solve the problems that the existing sliding window limit lock is not applicable to thicker tracks and has a relatively high manufacturing cost, etc., the present utility model provides a limit clip 100. Please refer to Figures 1 - 17 , and the limit clip 100 provided by the present utility model will be specifically explained. Among them, Figures 1 - 6 is the first embodiment of the present utility model, Figures 7 - 10 is the second embodiment of the present utility model, Figures 11 - 14 is the third embodiment of the present utility model, Figures 15 - 17 is the fourth embodiment of the present utility model. As Figure 5 , Figure 10 , Figure 14 and Figure 17As shown in the figure, the limit clip 100 includes a supporting member 1, a left clamping plate 21, a right clamping plate 22 and a pressing member 3. The left clamping plate 21 is rotatably connected to the supporting member 1; the right clamping plate 22 is rotatably connected to the supporting member 1; the pressing member 3 is arranged above the supporting member 1 and is connected to the supporting member 1 through a threaded connector 4. Among them, the left side of the pressing member 3 abuts against the left clamping plate 21, and the right side abuts against the right clamping plate 22. The bottoms of the left clamping plate 21 and the right clamping plate 22 are both located below the supporting member 1. When the threaded connector 4 drives the pressing member 3 to approach the supporting member 1, the left clamping plate 21 and the right clamping plate 22 rotate under the pressing action of the pressing member 3, so that the distance between the bottom of the left clamping plate 21 and the bottom of the right clamping plate 22 is reduced. Among them, the left clamping plate 21 and the right clamping plate 22 can be straight plates, bent plates or similar plate-like structures. The inner sides of the left clamping plate 21 and the right clamping plate 22 are pressed by the pressing member 3, so that the distance between the left clamping plate 21 and the right clamping plate 22 above the supporting member 1 is enlarged, the left clamping plate 21 and the right clamping plate 22 rotate, and the distance between the left clamping plate 21 and the right clamping plate 22 below the supporting member 1 is reduced. That is, the middle positions of the left clamping plate 21 and the right clamping plate 22 close to each other are rotatably connected to the supporting member 1, and the movement of the left clamping plate 21 and the right clamping plate 22 is similar to the movement of a seesaw. The rotatable connection includes a shaft connection, a snap connection or other rotatable connection methods. The threaded connector 4 can be a connecting component with threads, such as a bolt, etc. The threaded connector 4 driving the pressing member 3 to approach the supporting member 1 can be understood as the threaded connector 4 abutting against the upper surface of the pressing member 3. When the threaded connector 4 is tightened, the threaded connector 4 pushes the pressing member 3 to approach the supporting member 1.

[0055] For the limit clip 100 provided by the present utility model, the movement of the left clamping plate 21 and the right clamping plate 22 is similar to the movement of a seesaw. The left side of the pressing member 3 abuts against the upper part of the left clamping plate 21, and the right side abuts against the upper part of the right clamping plate 22. When the pressing member 3 approaches the supporting member 1, the pressing member 3 enlarges the distance between the upper part of the left clamping plate 21 and the upper part of the right clamping plate 22, so that the distance between the bottom of the left clamping plate 21 and the bottom of the right clamping plate 22 is reduced, so that the bottom of the left clamping plate 21 and the bottom of the right clamping plate 22 are clamped to the track 200 to block the sliding of the window. Compared with the existing sliding window limit lock, this solution can not only operate the threaded connector 4 from above, making the operation more convenient, but also be applicable to thicker tracks 200, with a wider application range. And because the movement principle of this solution is simpler, it is beneficial to design an embodiment with a low manufacturing cost.

[0056] In some embodiments, such as Figures 1 - 14As shown, the supporting member 1 is configured as a plate-like structure. A first strip-shaped hole 11 is provided on the left side of the supporting member 1. The left clamping plate 21 passes through the first strip-shaped hole 11 and is supported by the supporting member 1. The left clamping plate 21 can rotate within the first strip-shaped hole 11 to achieve a rotatable connection between the left clamping plate 21 and the supporting member 1. A second strip-shaped hole 12 is provided on the right side of the supporting member 1. The right clamping plate 22 passes through the second strip-shaped hole 12 and is supported by the supporting member 1. The right clamping plate 22 can rotate within the second strip-shaped hole 12 to achieve a rotatable connection between the right clamping plate 22 and the supporting member 1. Herein, the being supported by the supporting member 1 can be understood as the left clamping plate 21 and the right clamping plate 22 being supported by the supporting member 1 to prevent them from falling downward, and the supporting member 1 supports the rotation of the left clamping plate 21 and the right clamping plate 22. Compared with the conventional rotating connection method using a rotating shaft, the present embodiment uses a strip-shaped hole clamping method to achieve a rotatable connection, which not only simplifies the structure, but also reduces the number of parts, improves the assembly efficiency, and reduces the manufacturing cost.

[0057] Further, as Figures 3 - 4 , Figure 9 and Figure 13 shown, both the left clamping plate 21 and the right clamping plate 22 include a clamping portion 23 provided at the bottom, an abutting portion 24 provided at the top, and a connecting portion 25 connecting the abutting portion 24 and the clamping portion 23. The width of the connecting portion 25 is smaller than the width of the abutting portion 24. The length of the second strip-shaped hole 12 is smaller than the width of the abutting portion 24. The connecting portion 25 passes through the second strip-shaped hole 12, and the abutting portion 24 is supported by the supporting member 1. Herein, since the length of the second strip-shaped hole 12 is smaller than the width of the abutting portion 24, when the abutting portion 24 passes through the second strip-shaped hole 12, it is clamped by the second strip-shaped hole 12, and the abutting portion 24 is not easily detached downward from the second strip-shaped hole 12 and is supported by the supporting member 1. Further, as Figure 4 shown, the width of the connecting portion 25 is set as L3, the width of the abutting portion 24 is set as L1, and the length of the second strip-shaped hole 12 is set as L2, then the condition is satisfied: (L1 - L3) / 2 < L2 - L3, so that the abutting portion 24 can be supported by the supporting member 1 after passing through the second strip-shaped hole 12 obliquely. Herein, the L1, L2, and L3 have been marked in Figure 4 . As shown in the first figure of Figure 4 , the right clamping plate 22 is inserted into the second strip-shaped hole 12 from bottom to top. Since the width L1 of the abutting portion 24 is greater than the length L2 of the second strip-shaped hole 12, the abutting portion 24 can only be inserted into the second strip-shaped hole 12 obliquely; as Figure 4As shown in the second figure, the abutting portion 24 is inserted into the second strip-shaped hole 12 obliquely upward to the right. When the right edge of the connecting portion 25 abuts against the right edge of the second strip-shaped hole 12, the left end of the abutting portion 24 rotates upward. Since (L1 - L3) / 2 < L2 - L3, at this time, the length L2 of the second strip-shaped hole 12 allows the left end of the abutting portion 24 to pass through; as Figure 4 As shown in the third figure, after the abutting portion 24 completely passes through the second strip-shaped hole 12, move the abutting portion 24 to the left so that the center of the abutting portion 24 is aligned with the center of the supporting member 1; as Figure 4 shown in the fourth figure and Figure 3 As shown, after the center of the abutting portion 24 is aligned with the center of the supporting member 1, the abutting portion 24 is supported by the walls on both sides of the second strip-shaped hole 12, thus preventing the abutting portion 24 from falling downward. Moreover, the walls on both sides of the second strip-shaped hole 12 provide a rotation fulcrum for the right clamping plate 22, enabling the right clamping plate 22 to rotate.

[0058] Furthermore, the first strip-shaped hole 11 and the second strip-shaped hole 12 have the same size and are symmetrically arranged on the left and right sides of the supporting member 1. The left clamping plate 21 and the right clamping plate 22 have a left-right symmetrical structure. Therefore, the technical details of the first strip-shaped hole 11 and the left clamping plate 21 will not be elaborated here.

[0059] Furthermore, as Figure 4 shown in the second figure of Figure 9 and Figure 13 As shown, according to the process of the abutting portion 24 passing through the second strip-shaped hole 12 described above, it can be seen that the upper left corner and the upper right corner of the abutting portion 24 are prone to interference, resulting in the abutting portion 24 being unable to pass through the second strip-shaped hole 12. For this reason, in the embodiment of the present invention, as Figure 3 Figure 9 and Figure 13 As shown, the shape of the abutting portion 24 is set to be similar to a trapezoid with a smaller upper part and a larger lower part, so as to ensure that on the premise that the abutting portion 24 smoothly passes through the second strip-shaped hole 12, the width of the lower edge of the abutting portion 24 is as wide as possible, thereby preventing the abutting portion 24 from detaching from the second strip-shaped hole 12. Furthermore, the abutting portions 24 of the left clamping plate 21 and the right clamping plate 22 are both similar to trapezoids with a smaller upper part and a larger lower part. Among them, the similar trapezoid includes but is not limited to a common trapezoid, a trapezoid with rounded corners, a trapezoid with an arc-shaped edge, an asymmetric trapezoid, or other shapes similar to a trapezoid, etc. In a specific embodiment, as Figure 4 shown, the abutting portion 24 is configured as a trapezoid with arc-shaped left and right sides. In another embodiment, as Figure 9 shown, the abutting portion 24 is a trapezoid with rounded corners.

[0060] In some embodiments, as Figures 1 - 6As shown, the pressure member 3 is constructed as a trapezoidal block with a larger upper portion and a smaller lower portion, and the two sides of the pressure member 3 are respectively in contact with the top of the left clamping plate 21 and the top of the right clamping plate 22. Figure 5 As shown, since the side surface of the pressure piece 3 is an inclined slope, when the pressure piece 3 moves downward driven by the threaded connection piece 4, the left and right side surfaces of the pressure piece 3 respectively press against the top of the left clamp plate 21 and the top of the right clamp plate 22, so that the distance between the top of the left clamp plate 21 and the top of the right clamp plate 22 is enlarged, and the left clamp plate 21 and the right clamp plate 22 rotate under the support of the supporting member 1, so that the distance between the bottom of the left clamp plate 21 and the bottom of the right clamp plate 22 is reduced, thereby achieving the effect of clamping the rail 200.

[0061] Further, Figure 5 It includes two states: the pressure member 3 is in the upper limit position and the lower limit position, such as Figure 5 As shown in the left figure in the figure, when the threaded connector 4 is screwed to the end and connected to the supporting member 1, if the threaded connector 4 continues to be screwed upward, it will be detached from the supporting member 1. At this time, the pressure member 3 is in the upper limit position, and the distance between the bottom of the left clamp 21 and the bottom of the right clamp 22 is the largest. The R&D personnel can design the length of the threaded connector 4 so that when the pressure member 3 is in the upper limit position, that is, when the distance between the left clamp 21 and the right clamp 22 is the largest, the lower end of the left clamp 21 and the lower end of the right clamp 22 are both in a vertical state, thereby ensuring that when the limit clamp 100 is clamped, the left clamp 21 and the right clamp 22 form a "V" shape, the limit clamp is more difficult to fall off the track, and the clamping stability is better.

[0062] like Figure 5 As shown in the right side figure in the figure, when the lower surface of the pressure piece 3 is in contact with the upper surface of the supporting member 1, the pressure piece 3 cannot move downward. At this time, the pressure piece 3 is in the lower limit position. In this state, the inclination angle of the left clamp 21 and the right clamp 22 is smaller than the inclination angle of the side of the pressure piece 3, so that the side of the pressure piece 3 abuts against the top of the left clamp 21 and the right clamp 22, thereby ensuring that the force application point of the pressure piece 3 is always located at the top of the left clamp 21 and the right clamp 22 during the up and down movement. According to the principle of lever, applying pressure on the top of the left clamp 21 and the right clamp 22 can enable the limit clamp 100 to obtain the maximum clamping force and better clamping stability.

[0063] Furthermore, if Figure 5 As shown, the width of the first strip hole 11 and the second strip hole 12 are adapted to the thickness of the left clamping plate 21 and the right clamping plate 22, so that the left clamping plate 21 and the right clamping plate 22 have a certain swing space. When the pressure member 3 moves to the lower limit position, the first strip hole 11 and the second strip hole 12 will not interfere with the left clamping plate 21 and the right clamping plate 22.

[0064] Furthermore, if Figure 5As shown, both the left clamping plate 21 and the right clamping plate 22 are straight plates, and the left clamping plate 21 and the right clamping plate 22 are symmetrical structures; a chamfer or a rounded corner is provided on one side of the top of the left clamping plate 21 facing the pressing member 3, and a chamfer or a rounded corner is provided on one side of the top of the right clamping plate 22 facing the pressing member 3, so as to reduce the friction between the pressing member 3 and the left clamping plate 21 and the right clamping plate 22, making the up and down movement of the pressing member 3 smoother and not easily stuck. Moreover, since the pressing member 3 is made of plastic, while the left clamping plate 21, the right clamping plate 22 and the supporting member 1 are all formed by stamping sheet metal parts, when the pressure on the side of the pressing member 3 is relatively large, it is easily damaged by extrusion. Setting a chamfer or a rounded corner at the parts of the left clamping plate 21 and the right clamping plate 22 in contact with the pressing member 3 can reduce the contact stress and prevent the pressing member 3 from being damaged. In a specific embodiment, chamfers are respectively provided on one side of the tops of the left clamping plate 21 and the right clamping plate 22 facing the pressing member 3. In addition, in this embodiment, both the left clamping plate 21 and the right clamping plate 22 are straight plates, which can reduce the manufacturing cost; and since the left clamping plate 21 and the right clamping plate 22 are symmetrical structures, during the manufacturing process, the left clamping plate 21 and the right clamping plate 22 are made of the same material, and only by producing the same part twice can the left clamping plate 21 and the right clamping plate 22 be obtained, further reducing the manufacturing cost. In other embodiments, the left clamping plate 21 and the right clamping plate 22 can also be bent plates.

[0065] Further, as Figure 1 and Figure 2 shown, two of the threaded connectors 4 are provided in the extending direction of the pressing member 3. The pressing member 3 is respectively provided with counterbores 31 at positions corresponding to the threaded connectors 4, and the supporting member 1 is respectively provided with threaded connection holes 13 at positions corresponding to the threaded connectors 4. The threaded connectors 4 pass through the counterbores 31 and are connected to the threaded connection holes 13. Among them, the advantage of using two threaded connectors 4 is that it can ensure that the downward pressing amplitudes at both ends of the pressing member 3 are the same, avoiding the pressing member 3 from being skewed, so that the clamping force distribution of the limit clamp 100 in the extending direction of the track 200 is uniform. In other embodiments, the number of the threaded connectors 4 can be one, three or other numbers.

[0066] Further, as Figure 6 shown, in order to enable the limit clamp 100 to be applicable to thinner tracks 200, detachable clamping gaskets 5 are sleeved on the bottoms of the left clamping plate 21 and the right clamping plate 22. The clamping gaskets 5 are arranged inside the left clamping plate 21 and the right clamping plate 22, and the clamping gaskets 5 are provided with back clips which are clamped outside the left clamping plate 21 and the right clamping plate 22. After installing the clamping gaskets 5, the gap between the left clamping plate 21 and the right clamping plate 22 is reduced, so as to be adapted to thinner tracks 200. The thickness of the clamping gaskets 5 has multiple specifications to be selected, so that the limit clamp 100 can be adapted to tracks 200 with more thicknesses.

[0067] Further, different thicknesses of clamping gaskets 5 are used for the left clamping plate 21 and the right clamping plate 22. When the limit clamp 100 is clamped on the track 200, the limit clamp 100 deflects to the left or right. As a result, the width of the limit clamp 100 on one side of the track 200 is narrower, and the width on the other side of the track 200 is wider. When fitting the track 200 with a window screen, since the window screen is very close to the window, the limit clamp 100 may interfere with the adjacent window screen frame. At this time, the narrower side of the limit clamp 100 can be oriented towards the window screen frame to avoid interference with the window screen frame.

[0068] Further, the clamping gasket 5 can also be applicable to Figures 7 - 17 the embodiment of Figures 7 - 17 which is not shown in the figure. Its technical details are similar to those of this embodiment and will not be elaborated here.

[0069] In some embodiments, as Figures 7 - 10 shown, the pressing member 3 is configured as a plate-like structure, and both the left clamping plate 21 and the right clamping plate 22 are bent plate structures. When the lower end of the left clamping plate 21 is in a vertical state, the upper end of the left clamping plate 21 is in an outwardly inclined state; when the lower end of the right clamping plate 22 is in a vertical state, the upper end of the right clamping plate 22 is in an outwardly inclined state. Among them, since the upper ends of the left clamping plate 21 and the right clamping plate 22 are outwardly inclined slopes, when the pressing member 3 moves downward, the two sides of the pressing member 3 press against the left clamping plate 21 and the right clamping plate 22, causing the distance between the upper ends of the left clamping plate 21 and the right clamping plate 22 to increase and the distance between the bottom of the left clamping plate 21 and the bottom of the right clamping plate 22 to decrease. Further, the limit clamp 100 is clamped to the window track 200 to block the sliding of the window. Compared with Figures 1 - 6 the embodiment shown, the pressing member 3, the supporting member 1, the left clamping plate 21, and the right clamping plate 22 in this embodiment are all formed by stamping sheet metal parts, with higher reliability.

[0070] Further, as Figure 7 and Figure 8 shown, two threaded connectors 4 are provided on the pressing member 3 in the extending direction of the track 200. Through holes 32 are respectively provided on the pressing member 3 at positions corresponding to the threaded connectors 4, and threaded connection holes 13 are respectively provided on the supporting member 1 at positions corresponding to the threaded connectors 4. The threaded connectors 4 pass through the through holes 32 and are connected to the threaded connection holes 13. Among them, the advantage of using two threaded connectors 4 is that it can ensure that the downward pressing amplitudes at both ends of the pressing member 3 are consistent, avoiding the skewing of the pressing member 3, so that the clamping force distribution of the limit clamp 100 in the extending direction of the track 200 is uniform.

[0071] Further, as Figure 10As shown, the bending angles of the left clamping plate 21 and the right clamping plate 22 are between 20° and 45°, making the clamping effect of the limiting frame better. In a preferred embodiment, as Figure 10 shown, the bending angles of both the left clamping plate 21 and the right clamping plate 22 are 33°.

[0072] Furthermore, as Figure 9 shown, since the right clamping plate 22 is a bent plate, when assembling the right clamping plate 22, the right clamping plate 22 needs to be rotated by a certain angle first to adjust the abutting portion 24 to a vertical state, and then the abutting portion 24 is passed through the second strip-shaped hole 12 from bottom to top. The steps are similar to those Figure 4 shown and will not be elaborated here.

[0073] As Figure 5 and Figure 10 shown, when the left clamping plate 21 and the right clamping plate 22 are pressed by the pressing member 3, the supporting member 1 plays the role of a fulcrum and needs to provide a supporting force towards the inside for the left clamping plate 21 and the right clamping plate 22. When the clamping force is large, this supporting force will also be large. To prevent the supporting member 1 from cracking under the reaction force of the supporting force, the supporting member 1 needs to have a certain thickness outside the first strip-shaped hole 11 and the second strip-shaped hole 12. However, this also results in a relatively wide width L5 of the supporting member 1. When the limiting clip 100 is installed on the track 200, it may interfere with the adjacent screen window frame. But if the overall size of the limiting clip 100 is reduced proportionally, the distance L4 between the left clamping plate 21 and the right clamping plate 22 will become smaller, thereby narrowing the width of the adapted track 200.

[0074] Therefore, in order to narrow the width of L5 while keeping L4 unchanged, in some embodiments, as Figures 11 - 14 shown, the pressing member 3 is configured as a plate-like structure, and both the left clamping plate 21 and the right clamping plate 22 are bent plate structures and are symmetrically arranged; both the left clamping plate 21 and the right clamping plate 22 are bent twice. Among them, the connecting portion 25 is bent inward relative to the clamping portion 23, and the abutting portion 24 is bent outward relative to the connecting portion 25. When the clamping portion 23 is in a vertical state, the abutting portion 24 is in an outwardly inclined state; the position where the abutting portion 24 of the left clamping plate 21 is bent relative to the connecting portion 25 is located at the corresponding position of the first strip-shaped hole 11. The difference between this embodiment and the Figures 7 - 10 embodiment is that both the left clamping plate 21 and the right clamping plate 22 are bent twice, and the connecting portion 25 is bent inward relative to the clamping portion 23, so that the distance between the first strip-shaped hole 11 and the second strip-shaped hole 12 is narrowed while keeping L4 unchanged, thereby enabling the supporting member 1 to be narrowed while ensuring that the structural strength meets the requirements, so as to avoid interference with the adjacent screen window frame.

[0075] Furthermore, asFigure 14 As shown, the length of the threaded connector 4 is extended so that when the limit clip 100 is placed on the track 200, the threaded connector 4 can abut against the upper surface of the track 200. The technical details of other structures in this embodiment are the same as those of Figures 7 - 10 the embodiment shown, which will not be elaborated here.

[0076] In Figure 5 , Figure 10 and Figure 14 the embodiments shown, for example, Figure 14 in the embodiment shown, when the limit clip 100 is placed on the track 200, the threaded connector 4 abuts against the top surface of the track 200. As the threaded connector 4 is tightened, the left clamping plate 21 and the right clamping plate 22 gradually clamp the track 200. After clamping the track 200, when the threaded connector 4 is further screwed, the abutting force between the threaded connector 4 and the track 200 will increase, and the frictional force between the threaded connector 4 and the track 200 becomes larger, thereby enhancing the limiting performance of the limit clip 100.

[0077] In some embodiments, as Figures 15 - 17 shown, a first rotating shaft 171 is provided on the left side of the supporting member 1, and a second rotating shaft 172 is provided on the right side. The first rotating shaft 171 limits the middle part of the left clamping plate 21, and the left clamping plate 21 can rotate based on the first rotating shaft 171; the second rotating shaft 172 limits the middle part of the right clamping plate 22, and the right clamping plate 22 can rotate based on the second rotating shaft 172. Among them, the connection manner between the first rotating shaft 171 and the left clamping plate 21 can be shaft-hole fit connection, rotatable clamping connection or other connection manners, etc. The movements of the left clamping plate 21 and the right clamping plate 22 are similar to the movement of a seesaw. The middle part can be understood as a relatively large interval near the middle position, including but not limited to the upper-middle section, the middle section or the lower-middle section. The advantage of using rotating shaft limiting in this embodiment is that it makes the left clamping plate 21 and the right clamping plate 22 rotate more smoothly based on the rotating shaft; and since the left clamping plate 21 and the right clamping plate 22 will not separate from the supporting member 1 under the limiting action of the rotating shaft, when the limit clip 100 is installed on the track 200, there is no need to worry about the left clamping plate 21 and the right clamping plate 22 falling off, and the installation is more convenient.

[0078] In a specific embodiment, as Figure 16As shown, the first rotating shaft 171 and the second rotating shaft 172 are set as the smooth shafts of the shoulder screw 17. The supporting member 1 includes a top plate 14, and a first connecting plate 15 and a second connecting plate 16 respectively arranged on the front and rear sides of the top plate 14. Connecting through holes 151 are respectively formed on the left and right sides of the first connecting plate 15, and threaded holes 161 are respectively formed on the left and right sides of the second connecting plate 16. The diameter of the connecting through hole 151 is adapted to the smooth shaft of the shoulder screw 17, the threaded hole 161 is adapted to the thread of the shoulder screw 17, the distance between the first connecting plate 15 and the second connecting plate 16 is adapted to the length of the shoulder screw 17, and the shoulder screw 17 passes through the connecting through hole 151 and is connected to the threaded hole 161.

[0079] It is worth mentioning that since the shoulder screw 17 is a standard part, using the shoulder screw 17 as a rotating shaft in this embodiment can effectively reduce the manufacturing cost.

[0080] As Figure 16 shown, circular arc-shaped protrusions are stamped in the middle of the left clamping plate 21 and the right clamping plate 22. The circular arc protrusions extend along the extending direction of the track 200. The back of the circular arc protrusion is a circular arc-shaped depression 26. The diameter of the circular arc-shaped depression 26 is adapted to the diameters of the first rotating shaft 171 and the second rotating shaft 172. The left and right sides of the first connecting plate 15 and the second connecting plate 16 of the supporting member 1 protrude from the top plate 14. During assembly, first place the left clamping plate 21 and the right clamping plate 22 between the first connecting plate 15 and the second connecting plate 16 from the left and right sides of the supporting member 1. When the left clamping plate 21 and the right clamping plate 22 reach the predetermined position, install the shoulder screw 17. The shoulder screw 17 passes through the circular arc-shaped depression 26 and is connected to the second connecting plate 16, and the assembly is completed.

[0081] As Figure 17 shown, after the assembly is completed, the left clamping plate 21 is jointly limited by the first rotating shaft 171 and the left side surface of the top plate 14, so that the left clamping plate 21 cannot break away from the first rotating shaft 171. The right clamping plate 22 is jointly limited by the second rotating shaft 172 and the right side surface of the top plate 14, so that the right clamping plate 22 cannot break away from the second rotating shaft 172. The distance between the first connecting plate 15 and the second connecting plate 16 is adapted to the widths of the left clamping plate 21 and the right clamping plate 22, so that the left clamping plate 21 and the right clamping plate 22 are limited between the first connecting plate 15 and the second connecting plate 16.

[0082] Further, as Figure 17As shown, since the first rotating shaft 171 and the second rotating shaft 172 are arranged at the end of the supporting member 1, and the left clamping plate 21 and the right clamping plate 22 are both provided with an arc-shaped recess 26, the first rotating shaft 171 and the second rotating shaft 172 are embedded in the arc-shaped recess 26. These structures are beneficial to expanding the distance L4 between the left clamping plate 21 and the right clamping plate 22. Therefore, this embodiment can ensure that the width L5 of the bearing member is narrowed as much as possible under the premise that the distance L4 between the left clamping plate 21 and the right clamping plate 22 meets the requirements, so as to avoid the interference of the limit clamp 100 with the adjacent screen window frame.

[0083] Furthermore, if Figure 15 and Figure 17 As shown, the pressure member 3 is constructed as a trapezoidal block with a larger upper portion and a smaller lower portion, and its side surface is an inclined slope. The two sides of the pressure member 3 are respectively in contact with the top of the left clamping plate 21 and the top of the right clamping plate 22. When the pressure member 3 moves downward driven by the threaded connector 4, the left and right side surfaces of the pressure member 3 respectively press the top of the left clamping plate 21 and the top of the right clamping plate 22, so that the distance between the top of the left clamping plate 21 and the top of the right clamping plate 22 is expanded, and the left clamping plate 21 and the right clamping plate 22 rotate based on the first rotating shaft 171 and the second rotating shaft 172 respectively, so that the distance between the bottom of the left clamping plate 21 and the bottom of the right clamping plate 22 is reduced, so as to achieve the effect of clamping the track 200.

[0084] Further, Figure 17 It includes two states: the pressure member 3 is in the upper limit position and the lower limit position, such as Figure 17 As shown in the left figure in the figure, when the threaded connector 4 is screwed to the end and connected to the supporting member 1, if the threaded connector 4 continues to be screwed upward, it will be detached from the supporting member 1. At this time, the pressure member 3 is in the upper limit position, and the distance between the bottom of the left clamp 21 and the bottom of the right clamp 22 is the largest. The R&D personnel can design the length of the threaded connector 4 so that when the pressure member 3 is in the upper limit position, that is, when the distance between the left clamp 21 and the right clamp 22 is the largest, the lower end of the left clamp 21 and the lower end of the right clamp 22 are both in a vertical state, thereby ensuring that when the limit clamp 100 is clamped, the left clamp 21 and the right clamp 22 form a "V" shape, the limit clamp is more difficult to fall off the track, and the clamping stability is better.

[0085] like Figure 17As shown in the right figure in [reference], when the lower surface of the pressing member 3 fits against the upper surface of the supporting member 1, the pressing member 3 cannot move downward. At this time, the pressing member 3 is in the lower limit position. In this state, the inclination angles of the left clamping plate 21 and the right clamping plate 22 are smaller than the inclination angle of the side surface of the pressing member 3, so that the side surface of the pressing member 3 abuts against the tops of the left clamping plate 21 and the right clamping plate 22. Furthermore, it can be ensured that during the up and down movement of the pressing member 3, the force application point is always located at the tops of the left clamping plate 21 and the right clamping plate 22. According to the lever principle, applying pressure at the tops of the left clamping plate 21 and the right clamping plate 22 can enable the limit clamp 100 to obtain the maximum clamping force, and the clamping stability is better.

[0086] Furthermore, as Figure 16 shown, the number of the threaded connectors 4 can be one or more. In this embodiment, the number of the threaded connectors 4 is one. A counterbore 31 is provided at the corresponding position of the pressing member 3 for the threaded connector 4, and a threaded connection hole 13 is provided at the corresponding position of the top plate 14 of the supporting member 1 for the threaded connector 4. The threaded connector 4 passes through the counterbore 31 and is connected to the threaded connection hole 13.

[0087] Furthermore, chamfers are provided on the sides of the tops of the left clamping plate 21 and the right clamping plate 22 facing the pressing member 3 to reduce the contact stress on the side surface of the pressing member 3 and prevent the pressing member 3 from being damaged.

[0088] In addition, it should be noted that the above-mentioned embodiments can be combined with each other. For the same or similar concepts or processes, they may not be described in some embodiments. That is, the technical solutions disclosed in the subsequent (in the order of recording in the text) embodiments should include the technical solutions recorded in this embodiment and the technical solutions in all the embodiments before this embodiment.

[0089] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A limit clamp, characterized in that: include: Supporting parts; A left clamping plate rotatably connected to the supporting member; a right clamping plate, rotatably connected to the supporting member; A pressure member, disposed above the supporting member and connected to the supporting member via a threaded connector; Among them, the left side of the pressure member abuts against the left clamping plate, and the right side abuts against the right clamping plate, and the bottom of the left clamping plate and the bottom of the right clamping plate are both located below the supporting member; when the threaded connecting member drives the pressure member to approach the supporting member, the left clamping plate and the right clamping plate rotate under the pressing action of the pressure member, so that the distance between the bottom of the left clamping plate and the bottom of the right clamping plate is reduced.

2. The limit clamp according to claim 1, characterized in that: The supporting member is constructed as a plate-like structure, and a first strip hole is opened on the left side of the supporting member. The left clamping plate is supported by the supporting member after passing through the first strip hole, and the left clamping plate can rotate in the first strip hole to realize the rotatable connection between the left clamping plate and the supporting member; A second strip hole is opened on the right side of the supporting member, and the right clamping plate is supported by the supporting member after passing through the second strip hole. The right clamping plate can rotate in the second strip hole to realize the rotatable connection between the right clamping plate and the supporting member.

3. The limiting clamp according to claim 2, characterized in that: The left clamping plate and the right clamping plate both include a clamping portion arranged at the bottom, an abutting portion arranged at the top, and a connecting portion connecting the abutting portion and the clamping portion, the width of the connecting portion is smaller than the width of the abutting portion, the length of the second strip hole is smaller than the width of the abutting portion, the connecting portion passes through the second strip hole, and the abutting portion is supported by the supporting member.

4. The limiting clamp according to claim 3, characterized in that: The width of the connecting portion is set to L3, the width of the abutting portion is set to L1, and the length of the second strip hole is set to L2, then the condition is satisfied: (L1-L3) / 2<L2-L3, so that the abutting portion can be supported by the supporting member after obliquely passing through the second strip hole.

5. The limiting clamp according to claim 4, characterized in that: The shape of the abutting portion is set to be a trapezoidal shape with a small upper part and a large lower part.

6. The limiting clamp according to claim 1, characterized in that: A first rotating shaft is arranged on the left side of the supporting member, and a second rotating shaft is arranged on the right side. The first rotating shaft limits the middle part of the left splint, and the left splint can rotate based on the first rotating shaft; the second rotating shaft limits the middle part of the right splint, and the right splint can rotate based on the second rotating shaft.

7. The limiting clamp according to any one of claims 1 to 6, characterized in that: The pressure member is constructed as a trapezoidal block that is larger at the top and smaller at the bottom, and two sides of the pressure member are respectively in contact with the top of the left clamping plate and the top of the right clamping plate.

8. The limiting clamp according to claim 7, characterized in that: The left clamping plate and the right clamping plate are both straight plates, and the left clamping plate and the right clamping plate are symmetrical structures; A chamfer or a rounded corner is provided on the top of the left clamping plate facing the pressure member, and a chamfer or a rounded corner is provided on the top of the right clamping plate facing the pressure member.

9. The limiting clamp according to any one of claims 1 to 6, characterized in that: The pressure piece is constructed as a plate-like structure, and the left and right clamps are both bent plate structures. When the lower end of the left clamp is in a vertical state, the upper end of the left clamp is in an outwardly inclined state; when the lower end of the right clamp is in a vertical state, the upper end of the right clamp is in an outwardly inclined state.

10. The limiting clamp according to any one of claims 3 to 5, characterized in that: The pressure member is a plate-shaped structure, and the left clamping plate and the right clamping plate are both bent plate structures and are symmetrically arranged; The left clamping plate and the right clamping plate are both bent twice, wherein the connecting portion is bent inwardly relative to the clamping portion, and the abutting portion is bent outwardly relative to the connecting portion, and when the clamping portion is in a vertical state, the abutting portion is in an outwardly inclined state; The portion of the abutting portion of the left clamping plate bent relative to the connecting portion is located at a position corresponding to the first strip-shaped hole.

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