Automatic belt body clamping device and shoe using same
By designing automatic card tight devices, the cooperation of the shell, inner set and card parts is used to solve the tedious operation of traditional band adjustment methods, and realize the simple, fast adjustment and fixing of the band.
Patent Information
- Application Number
- CN202420566329.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-22
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-03-22
AI Technical Summary
The traditional belt body adjustment method is cumbersome, the adjustment efficiency is low, and the user requires the operation to fix the belt body, which is complicated.
Design a type of automatic card tight device. Through the cooperation between the shell, the inner set, and the card, just move the case to the required position, you can adjust and fix the band body, which is simpler and faster.
The simple, fast adjustment and fixing of the band, more convenient operation, avoiding complex operations in traditional methods.
Smart Images
Figure CN222397256U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of winding devices, in particular to an automatic belt clamping device and also to a pair of shoes using the automatic belt clamping device. Background Art
[0002] In daily life, it is very common to adjust and fix the length of straps, including shoelaces, wrist straps, waistbands, bag drawstrings, etc.
[0003] Traditional belt adjustment methods usually rely on physical structures such as buckles and knots, which are cumbersome to operate and have low adjustment efficiency. In addition, some new adjustment methods, such as rotational fixing, press-type fixing, buckle fixing, etc., require the user to fix the belt, and the operation is still relatively complicated. Summary of the invention
[0004] The purpose of the utility model is to overcome the above-mentioned defects in the prior art and provide an automatic belt clamping device. Through the cooperation between the outer shell, the inner sleeve and the clamping member, the purpose of adjusting and fixing the belt body can be achieved by simply moving the outer shell to the desired position, and the operation is simpler and faster.
[0005] To achieve the above-mentioned purpose, the utility model provides an automatic clamping device for a belt body, comprising a shell, one end of the shell is a wire inlet, and the other end is a wire outlet, an inner sleeve and a clamping piece are installed in the shell, the shell can drive the inner sleeve to move toward the wire inlet, and the shell can drive the clamping piece to move toward the wire outlet; a clamping structure is formed between the inner sleeve and the clamping piece, and a reset piece is abutted between the inner sleeve and the clamping piece.
[0006] In the above technical solution, the inner sleeve includes an inner sleeve body, and the interior of the inner sleeve body forms an inner cavity with two ends passing through; the clamp includes a clamp body, and the clamp body is installed in the inner cavity, and the two sides of the clamp body and the inner wall of the inner cavity jointly define two first channels.
[0007] In the above technical solution, one or more clamping steps are provided on opposite sides of the inner chamber, one or more clamping teeth are provided on the protrusions on both sides of the clamping body, the top of the clamping teeth is located on one side of the clamping steps, and the clamping teeth and the clamping steps are combined to form the clamping structure. The setting of the clamping steps increases the friction force of the belt body moving toward the wire inlet, so that when the outer shell is not moved directly, the purpose of adjusting the length of the belt body by only pulling the belt body outside the wire inlet to indirectly drive the automatic clamping device of the belt body cannot be achieved.
[0008] In the above technical solution, one or more release steps are provided on the opposite sides of the inner chamber, and the release steps are lower than the clamping steps based on the inner side wall of the inner sleeve body, and the release steps are located between the clamping steps and the wire outlet, and the clamping teeth are located between the clamping steps and the release steps; one or more release teeth may also be raised on both sides of the clamp body, and the release teeth are lower than the clamping teeth based on the axis of the clamp, and the release teeth are located between the clamping teeth and the wire inlet.
[0009] In the above technical solution, the bottom of the inner sleeve body is protruded toward the inlet and is provided with a linkage convex edge that abuts against the bottom edge of the outer shell; the top of the accommodating cavity of the clamp is open and is provided with a slot, and the inner wall of the top of the outer shell is protruded with a linkage protrusion that is movable in the slot. The linkage convex edge enables the outer shell to drive the inner sleeve to move toward the inlet; the linkage protrusion enables the outer shell to drive the clamp to move toward the outlet.
[0010] In the above technical solution, a limit plate is extended at the bottom of the inner sleeve body toward the wire outlet, and a retaining wall is provided on the protruding end of the limit plate; the clamp body is provided with a accommodating cavity with a rectangular cross-section toward the wire outlet, the bottom of the accommodating cavity is open and adapted to the limit plate, and the accommodating cavity is open at one end relative to the clamp body and adapted to the retaining wall; the two outer side walls of the accommodating cavity and the inner side wall of the outer shell jointly define two second channels, and the two second channels are respectively connected to the two first channels.
[0011] In the above technical solution, the resetting member is installed in the accommodating cavity, and the resetting member is an elastic member that can restore deformation, one end of the resetting member abuts against the inner wall of the accommodating cavity, and the other end abuts against the retaining wall. The setting of the resetting member enables the automatic belt clamping device of the utility model to automatically return to the state of clamping the belt when it stops moving.
[0012] In the above technical solution, the reset member is a spring; the inner wall of the retaining wall is provided with a first positioning column, and the inner wall of the end of the accommodating cavity connected to the clamp body is provided with a second positioning column; one end of the spring is sleeved outside the first positioning column and abuts against the retaining wall, and the other end is sleeved outside the second positioning column and abuts against the inner wall of the accommodating cavity. Selecting a spring as the reset member can effectively reduce production costs; the provision of the first positioning column and the second positioning column makes the direction of the spring restoring deformation more stable, thereby stabilizing the cooperation between the inner sleeve and the clamp.
[0013] In the above technical solution, the bottom protrusion of the clamp body near one end of the wire inlet is provided with a guide block, and the bottom inner wall of the inner sleeve body is provided with a guide groove adapted to the guide block. This structure enables the clamp to move in the inner sleeve along the direction of the guide groove, better defines the moving track of the clamp, and makes the movement of the clamp more stable and reliable.
[0014] The utility model also provides a pair of shoes, comprising the above-mentioned belt body automatic clamping device and shoelaces installed therein.
[0015] Compared with the prior art, the beneficial effects of the utility model are:
[0016] 1. The automatic belt clamping device of the utility model can achieve the purpose of adjusting and fixing the belt body by cooperating between the outer shell, the inner sleeve and the clamping piece, only by moving the outer shell to the required position, without additional action of fixing the belt body, and the operation is simpler and faster.
[0017] 2. When the automatic belt clamping device of the utility model is in a clamping state, the automatic belt clamping device cannot be moved only by pulling the belt outside the wire inlet. In other words, the automatic belt clamping device is continuously moved toward the wire inlet until the belt outside the wire inlet exerts a pulling force on both sides of the automatic belt clamping device. When the automatic belt clamping device is released, the pulling force will not move the automatic belt clamping device, and the automatic belt clamping device is still in a clamping state. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 This is a schematic diagram of the structure of the automatic belt clamping device provided by the utility model. Figure 1 ;
[0020] Figure 2 This is a schematic diagram of the structure of the automatic belt clamping device provided by the utility model. Figure 2 ;
[0021] Figure 3 It is a schematic diagram of the structure decomposition of the belt body automatic clamping device provided by the utility model;
[0022] Figure 4 This is a schematic diagram of the combined structure of the inner sleeve and the clamp provided by the utility model;
[0023] Figure 5It is a structural schematic diagram of the card provided by the utility model;
[0024] Figure 6 It is a cross-sectional view of the belt body automatic clamping device provided by the utility model;
[0025] Figure 7 It is a cross-sectional view of the belt automatic clamping device provided by the utility model in a static state;
[0026] Figure 8 It is a cross-sectional view of the belt body automatic clamping device provided by the utility model in the moving state;
[0027] Fig. 9 The utility model is a schematic diagram of the structure of a shoe using the automatic belt clamping device provided by the utility model.
[0028] The markings in the accompanying drawings are: 1. outer shell; 11. outer chamber; 12. wire inlet; 13. wire outlet; 14. linkage protrusion; 2. inner sleeve; 21. inner sleeve body; 211. inner chamber; 212. boss; 213. guide groove; 2121. clamping step; 2122. release step; 22. limit plate; 221. retaining wall; 2211. first positioning column; 23. linkage protrusion; 3. clamping member; 31. clamping member body; 311. clamping tooth; 312. release tooth; 313. guide block; 32. accommodating cavity; 321. second positioning column; 322. slot; 4. reset member; 5. first channel; 6. second channel; 7. shoelaces. DETAILED DESCRIPTION
[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0030] refer to Figure 1-8 As shown, the embodiment of the utility model provides an automatic belt clamping device, which includes an outer shell 1, an inner sleeve 2, a clamping member 3 and a reset member 4, wherein:
[0031] The outer shell 1 is formed with an outer chamber 11 with two ends passing through it. One end of the outer chamber 11 is the inlet 12, and the other end is the outlet 13. The inner sleeve 2 and the clamp 3 are installed in the outer chamber 11. A clamping structure is formed between the inner sleeve 2 and the clamp 3, and a reset member 4 is abutted between the inner sleeve 2 and the clamp 3. When the outer shell 1 moves toward the inlet 12, the outer shell 1 drives the inner sleeve 2 to move toward the inlet 12, and at the same time, the inner sleeve 2 compresses the reset member 4, and the reset member 4 restores its deformation to drive the clamp 3 to move toward the inlet 12; when the outer shell 1 moves toward the outlet 13, the outer shell 1 drives the clamp 3 to move toward the outlet 13, and at the same time, the clamp 3 compresses the reset member 4, and the reset member 4 restores its deformation to drive the inner sleeve 2 to move toward the outlet 13.
[0032] The inner sleeve 2 includes an inner sleeve body 21, the outer wall of the inner sleeve body 21 is adapted to the inner wall of the outer shell 1, so that the inner sleeve body 21 can slide smoothly in the outer shell 1; the inner sleeve body 21 is installed in the outer chamber 11, and is close to the side of the inlet 12. The inner sleeve body 21 is formed with an inner chamber 211 with two ends passing through it. The inner chamber 211 is connected with the outer chamber 11, and the openings at both ends of the inner chamber 211 are respectively arranged corresponding to the inlet 12 and the outlet 13. The clamp 3 includes a clamp body 31, which is installed in the inner chamber 211 of the inner sleeve body 21. The clamp body 31 separates the inner chamber 211 into two first channels 5 for the belt body to pass through, and a clamping structure for clamping the belt body is provided in the first channel 5.
[0033] Two opposite inner side walls of the inner sleeve body 21 are protruded to form two opposite bosses 212 , and the two sides of the clamp body 31 and the two bosses 212 define two first channels 5 for the belt to pass through. One or more clamping steps 2121 are provided on the opposite side of the two bosses 212, and the clamping steps 2121 increase the friction force of the belt body moving toward the wire inlet 12. Specifically, the step surface of the clamping step 2121 is arranged toward the wire outlet 13. When the belt body is bent and pressed against the clamping step 2121 under force, the movement of the belt body toward the wire inlet 12 is restricted; one or more clamping teeth 311 are provided on the protrusions on both sides of the clamping body 31, and the tooth tops of the clamping teeth 311 are located on one side of the clamping steps 2121. The clamping teeth 311 and the clamping steps 2121 are combined to form a clamping structure for clamping the belt body; when the automatic clamping device for the belt body of the utility model is in the clamping state, the clamping teeth 311 exert force on the belt body, so that the belt body is bent and pressed against the clamping step 2121, thereby restricting the belt body from moving toward the wire inlet 12.
[0034] One or more release steps 2122 are further provided on the opposite side of the two bosses 212. Taking the inner side wall of the inner sleeve 21 as a reference, the release step 2122 is lower than the clamping step 2121. The release step 2122 is located between the clamping step 2121 and the wire outlet 13. The clamping tooth 311 is located between the clamping step 2121 and the release step 2122. When the clamping member 3 moves toward the wire outlet 13, the clamping tooth 311 moves away from the clamping step 2121 and approaches the release step 2122. Then, the distance between the boss 212 and the first channel 5 between the clamping member 3 becomes wider, and the belt body is released and loosened, so that the belt body can move smoothly in the first channel 5. One or more release teeth 312 may also be raised on both sides of the clamp body 31. With the axis of the clamp 3 as a reference, the release teeth 312 are lower than the clamping teeth 311. The release teeth 312 are arranged between the clamping teeth 311 and the wire inlet 12. When the clamp 3 moves toward the wire outlet 13, the release teeth 312 approach the clamping step 2121, and the distance between the boss 212 and the first channel 5 of the clamp 3 becomes wider, and the belt body is released and loosened, so that the belt body can move smoothly in the first channel 5.
[0035] The bottom of the inner sleeve body 21 extends toward the outlet 13 with a limit plate 22, and the end of the limit plate 22 is protruding with a retaining wall 221 for the reset member 4 to abut against. The clamp body 31 is provided with a accommodating cavity 32 with a rectangular cross section toward the outlet 13. The bottom of the accommodating cavity 32 is open and adapted to the limit plate 22. The accommodating cavity 32 is open at one end relative to the clamp body 31 and adapted to the retaining wall 221, so that the accommodating cavity 32 can be installed on both sides of the limit plate 22 and move along the limit plate 22 toward the outlet 13 or the inlet 12. The two outer side walls of the accommodating cavity and the inner side wall of the outer shell 1 jointly define two second channels 6 for the belt body to pass through, and the two second channels 6 are respectively connected to the two first channels 5.
[0036] The inner wall of the accommodating cavity 32, the limit plate 22 and the retaining wall 221 together define a space for accommodating the reset member 4. Specifically, one end of the reset member 4 abuts against the retaining wall 221, and the other end abuts against the inner wall of the accommodating cavity 32. When the belt automatic clamping device of the utility model is subjected to external force, the clamp 3 will move relative to the inner sleeve 2 toward the outlet 13, and the belt will be released. When it is not subjected to external force, the reset member 4 restores the deformation to act on the clamp 3 or the inner sleeve 2, so that the clamp 3 and the inner sleeve 2 return to their initial relative positions, and the belt is clamped. The reset member 4 is an elastic member that can restore the deformation. In the utility model, the reset member 4 is a spring. A first positioning column 2211 is provided on the inner wall of the retaining wall 221, and a second positioning column 321 is provided on the inner wall of the end of the accommodating cavity 32 connected to the clamp body 31. One end of the spring is sleeved outside the first positioning column 2211 and abuts against the retaining wall 221, and the other end is sleeved outside the second positioning column 321 and abuts against the inner wall of the accommodating cavity 32.
[0037] The bottom of the inner sleeve body 21 is protruded toward the line inlet 12 and is provided with a linkage convex edge 23 that abuts against the bottom edge of the outer shell 1; the top of the accommodating cavity 32 of the clamp 3 is open and provided with a slot 322, and the inner wall of the top of the outer shell 1 is protruded with a linkage protrusion 14 that is movable in the slot 322. When the outer shell 1 moves toward the line inlet 12, the linkage convex edge 23 drives the inner sleeve 2 to move toward the line inlet 12, and the linkage protrusion 14 in the outer shell 1 leaves the end of the slot 322, and the linkage protrusion 14 moves in the slot 322; when the outer shell 1 moves toward the line outlet 13, the linkage protrusion 14 acts on the end of the slot 322 to drive the clamp 3 to move toward the line outlet 13, and the bottom edge of the outer shell 1 leaves the linkage convex edge 23.
[0038] A guide block 313 is provided on the bottom protrusion of the card body 31 near the wire inlet 12, and a guide groove 213 adapted to the guide block 313 is provided on the bottom inner wall of the inner sleeve body 21, so that the card 3 can move in the inner sleeve 2 along the direction of the guide groove 213, thereby better limiting the movement trajectory of the card 3 and making the movement of the card 3 more stable and reliable.
[0039] In the present invention, the inner sleeve body 21, the linkage convex edge 23, the limit plate 22 and the retaining wall 221 are integrally formed; the clamp body 31, the guide block 313 and the accommodating cavity 32 are integrally formed.
[0040] refer to Figure 7 , Figure 8As shown, the working principle of the automatic clamping device for the belt of the utility model is as follows: ① after the two belts are inserted into the first channel 5 and the second channel 6, when the automatic clamping device for the belt is no longer moved, the initial state of the automatic clamping device for the belt is the clamping state; ② when it is necessary to shorten the clamped length of the belt, the outer shell 1 is moved toward the wire inlet 12, and the outer shell 1 drives the inner sleeve 2 to move toward the wire inlet 12 through the linkage convex edge 23, and the clamping step 2121 and the releasing step 2122 move toward the wire inlet 12, that is, the clamping step 2121 moves away from the clamping tooth 311 and approaches the releasing tooth 312, and the releasing step 2122 approaches the clamping tooth 311, the distance of the first channel 5 becomes wider, the belt is released, and the belt The automatic clamping device can move smoothly to the position where the belt body needs to be locked; ③ When the automatic clamping device of the belt body stops moving, the spring restores its deformation and drives the clamping member 3 to move toward the inlet port 12, until the slot 322 on the clamping member 3 abuts against the linkage protrusion 14 of the shell 1, and the clamping tooth 311 presses the belt body against the clamping step 2121. At this time, the automatic clamping device of the belt body returns to the clamping state; ④ When the clamped length of the belt body needs to be extended, the shell 1 is moved toward the outlet port 13, and the shell 1 drives the clamping member 3 to move toward the outlet port 13 through the linkage protrusion 14, and the clamping tooth 311 and the release tooth 312 move toward the outlet port 13, that is, the clamping tooth 311 moves away from the clamping step 2121 and approaches the release step 2 122, and the release tooth 312 is close to the clamping step 2121, the distance of the first channel 5 becomes wider, the belt body is released, and the automatic clamping device of the belt body can move smoothly to the position where the belt body needs to be extended; ⑤ When the automatic clamping device of the belt body stops moving, the spring restores its deformation and drives the inner sleeve 2 to move toward the outlet 13 until the linkage convex edge 23 of the inner sleeve 2 abuts against the bottom edge of the outer shell 1, and the clamping tooth 311 presses the belt body against the clamping step 2121. At this time, the automatic clamping device of the belt body returns to the clamping state; ⑥ When no force is directly applied to the automatic clamping device of the belt body, the belt body outside the inlet 12 is pulled to both sides, and the belt body exerts an effect on the position of the edge of the side wall of the inner sleeve body 21 in the direction of the outlet 13 At the same time, due to the setting of the clamping step 2121, the belt body is restricted from moving in the direction of the wire inlet 12, so that the belt body generates a force on the clamping step 2121 and the clamping tooth 311 in the direction of the wire inlet 12, that is, the belt body generates a force on the inner sleeve 2 and the clamping member 3 in the direction of the wire inlet 12, and the clamping member 3 generates a force on the outer shell 1 in the direction of the wire inlet 12 through the linkage protrusion 14, and the outer shell 1 then generates a force on the inner sleeve 2 in the direction of the wire inlet 12 through the linkage protrusion 23. That is to say, when the belt body outside the wire inlet 12 is pulled to both sides, the force generated in the direction of the wire inlet 12 will offset the force generated in the direction of the wire outlet 13, so that the automatic clamping device of the belt body will not move and is still in a clamped state.
[0041] In summary, the automatic belt clamping device of the utility model, through the cooperation between the outer shell, the inner sleeve and the clamping piece, only needs to move the outer shell to the desired position, without any additional action to fix the belt body, so as to achieve the purpose of adjusting and fixing the belt body, and the operation is simpler and faster.
[0042] refer to Fig. 9 As shown, the embodiment of the utility model further provides a shoe, which includes a shoelace 7 and the above-mentioned automatic belt clamping device arranged on the shoelace 7. When in use, two shoelaces 7 are passed through the automatic belt clamping device, and then the shoelace 7 is held by one hand, and the automatic belt clamping device is moved to the position where the shoelace 7 needs to be clamped by the other hand, and the shoelace 7 and the automatic belt clamping device are released. Without applying external force, the automatic belt clamping device automatically clamps the shoelace 7; the device can quickly and conveniently adjust the tightness of the shoelace, and reliably lock the shoelace 7, thereby improving the convenience and stability of wearing.
[0043] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.
Claims
1. An automatic belt clamping device, characterized in that: The invention comprises a shell (1), one end of the shell (1) being a line inlet (12), and the other end being a line outlet (13); an inner sleeve (2) and a clamping member (3) are arranged inside the shell (1); the shell (1) can drive the inner sleeve (2) to move toward the line inlet (12), and the shell (1) can drive the clamping member (3) to move toward the line outlet (13); a clamping structure is formed between the inner sleeve (2) and the clamping member (3), and a reset member (4) is abutted between the inner sleeve (2) and the clamping member (3).
2. The belt automatic clamping device according to claim 1, characterized in that: The inner sleeve (2) comprises an inner sleeve body (21), the inner sleeve body (21) is formed with an inner chamber (211) passing through at both ends; the clamp (3) comprises a clamp body (31), the clamp body (31) is installed in the inner chamber (211), and two sides of the clamp body (31) and the inner wall of the inner chamber (211) together define two first channels (5).
3. The automatic belt clamping device according to claim 2, characterized in that: One or more clamping steps (2121) are provided on opposite sides of the inner chamber (211), and one or more clamping teeth (311) are provided on protrusions on both sides of the clamping body (31), and the tooth tops of the clamping teeth (311) are located on one side of the clamping steps (2121), and the clamping teeth (311) and the clamping steps (2121) are combined to form the clamping structure.
4. The automatic belt clamping device according to claim 3, characterized in that: One or more release steps (2122) are further provided on opposite sides of the inner chamber (211); with the inner side wall of the inner sleeve body (21) as a reference, the release steps (2122) are lower than the clamping steps (2121); the release steps (2122) are located between the clamping steps (2121) and the line outlet (13); the clamping teeth (311) are located between the clamping steps (2121) and the release steps (2122); and one or more release teeth (312) may also be provided protrudingly on both sides of the clamping member body (31); with the axis of the clamping member (3) as a reference, the release teeth (312) are lower than the clamping teeth (311); the release teeth (312) are located between the clamping teeth (311) and the line inlet (12).
5. The automatic belt clamping device according to claim 4, characterized in that: The bottom of the inner sleeve body (21) is protruded toward the line inlet (12) and is provided with a linkage convex edge (23) that abuts against the bottom edge of the outer shell (1); the top of the accommodating cavity (32) of the clamp (3) is open and provided with a slot (322); the inner wall of the top of the outer shell (1) is protruded and provided with a linkage protrusion (14) that is movably provided in the slot (322).
6. The automatic belt clamping device according to claim 5, characterized in that: A limit plate (22) is extended at the bottom of the inner sleeve body (21) in the direction of the wire outlet (13), and a retaining wall (221) is provided at the end of the limit plate (22); a receiving cavity (32) is provided in the direction of the wire outlet (13), the bottom of the receiving cavity (32) is open and adapted to the limit plate (22), and one end of the receiving cavity (32) relative to the card body (31) is open and adapted to the retaining wall (221); two outer side walls of the receiving cavity (32) and the inner side wall of the outer shell (1) jointly define two second channels (6), and the two second channels (6) are respectively connected to the two first channels (5).
7. The automatic belt clamping device according to claim 6, characterized in that: The resetting member (4) is installed in the accommodating cavity (32); the resetting member (4) is an elastic component capable of restoring deformation; one end of the resetting member (4) abuts against the inner wall of the accommodating cavity (32), and the other end abuts against the retaining wall (221).
8. The automatic belt clamping device according to claim 7, characterized in that: The reset member (4) is a spring; a first positioning column (2211) is provided on the inner wall of the retaining wall (221); a second positioning column (321) is provided on the inner wall of the accommodating cavity (32) at one end connected to the clamping body (31); one end of the spring is sleeved outside the first positioning column (2211) and abuts against the retaining wall (221), and the other end is sleeved outside the second positioning column (321) and abuts against the inner wall of the accommodating cavity (32).
9. The automatic belt clamping device according to any one of claims 2 to 8, characterized in that: A guide block (313) is provided on a bottom protrusion of one end of the clamp body (31) close to the wire inlet (12), and a guide groove (213) adapted to the guide block (313) is provided on the bottom inner wall of the inner sleeve body (21).
10. A shoe, characterized in that: It comprises the automatic belt clamping device as claimed in any one of claims 1 to 9 and a shoelace (7) installed therein.