Trouser binding belt

Abstract

The utility model discloses a trouser binding belt which comprises a bottom plate, a rotary buckle and an elastic rope, and the rotary buckle is installed on the bottom plate. The elastic rope is partially rolled in the rotary buckle, and the elastic rope located outside the rotary buckle can be hung on the bottom plate or the rotary buckle and define a trouser binding hole. Wherein the rotary buckle can wind or release the elastic rope. When the trouser binding belt provided by the utility model is used, the elastic rope positioned outside the rotary buckle can be wound on the trouser legs and then is connected with the bottom plate or the rotary buckle in a hanging manner, so that the trouser legs are limited in the trouser binding holes, then the rotary buckle is operated to roll the elastic rope, and the trouser binding holes can be contracted, so that the trouser legs are tightly bound and fixed; if the tightness needs to be adjusted, only the rotary buckle needs to be wound or the elastic rope needs to be released, the process can be completed through one-hand operation, therefore, by the adoption of the arrangement, the trouser binding belt can achieve the trouser binding function without a hook-and-loop fastener, the problem that trousers are damaged by the hook-and-loop fastener is solved, and the tightness can be adjusted through one-hand operation, and convenience and simplicity are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of sports goods, in particular to a trouser belt. Background Art

[0002] When people ride bicycles, they usually use a trouser belt to tie up their trouser legs. The main body of the trouser belt currently on the market is a belt cut from elastic fabric, and Velcro is added to the head and tail of the belt. The belt is wrapped around people's trouser legs by utilizing the elasticity of the belt, and then the two ends of the belt are connected by utilizing the stickiness between the two Velcros to fix the trouser legs so that the trouser legs will not get stuck in the chain of the bicycle when riding. The Velcro of the existing trouser belt often sticks to the trousers, causing damage to the trousers. In addition, in the process of adjusting the tightness of the existing trouser belt, the two Velcros need to be separated first, and then the two ends of the trouser belt need to be pulled hard to make the two Velcros close together again. This process generally requires people to operate with both hands, and the tightness adjustment is inconvenient. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a trousers drawstring that can achieve the trousers drawstring function without Velcro, avoids the problem of Velcro damaging trousers, and the tightness can be adjusted by one hand, which is convenient and simple.

[0004] According to the embodiment of the utility model, the pants drawstring comprises a base plate, a buckle and an elastic cord, wherein the buckle is installed on the base plate; the elastic cord is partially rolled up in the buckle, and the elastic cord located outside the buckle can be hung on the base plate or the buckle and enclosed to form a pants drawstring hole; wherein the buckle can roll up or release the elastic cord; the buckle comprises a mounting shell, a take-up wheel and a rotary cover, wherein the mounting shell is mounted on the base plate, the rotary cover can be rotatably covered on the mounting shell, the rotary cover and the mounting shell enclose a accommodating cavity, the mounting shell is provided with a wire outlet hole connected to the accommodating cavity, the take-up wheel is rotatably installed in the accommodating cavity, the elastic cord is passed through the wire outlet hole and is connected to the The invention relates to a method of connecting the rotating cover to the take-up wheel, wherein a clutch assembly is arranged between the rotary cover and the take-up wheel, a first limiting structure is arranged between the mounting shell and the clutch assembly, and a locking structure is arranged between the clutch assembly and the rotary cover, wherein the first limiting structure can limit the clutch assembly from rotating in a second direction relative to the mounting shell, wherein when the rotary cover rotates in the first direction, the locking structure locks the relative position between the rotary cover and the clutch assembly, and the rotary cover drives the clutch assembly to connect with the take-up wheel, and when the rotary cover rotates in a second direction opposite to the first direction, the locking structure is unlocked, and the rotary cover drives the clutch assembly to disconnect the connection between the clutch assembly and the take-up wheel.

[0005] The trouser leg belt according to the embodiment of the utility model has at least the following beneficial effects: when the trouser leg belt provided by the utility model is in use, the elastic cord located outside the buckle can be wrapped around the trouser leg and then hung with the bottom plate or the buckle, so that the trouser leg is confined in the trouser hole, and then the buckle is operated to reel in the elastic cord, so that the trouser hole can be contracted, thereby binding and fixing the trouser leg tightly; after the trouser leg is bound, if the tightness needs to be adjusted, it is only necessary to reel in or release the elastic cord by the buckle, and this process can be completed with one hand. Therefore, by adopting the above-mentioned arrangement, the trouser leg belt provided by the utility model can realize the trouser binding function without Velcro, thus eliminating the problem of Velcro damaging the trousers, and the tightness can be adjusted with one hand, which is convenient and simple.

[0006] According to some embodiments of the utility model, an inner gear ring is provided at one end of the take-up wheel facing the rotary cover, the clutch assembly includes a mounting disk and at least two transmission members, one end of the mounting disk is rotatably inserted in the inner gear ring, at least two first sockets are provided on the outer periphery of one end of the mounting disk, the mounting disk is provided with a second socket facing the rotary cover, the second socket is connected to all the first sockets, all the transmission members are inserted in all the first sockets one by one, first meshing teeth are provided on the transmission member, the rotary cover is connected to a driving member, the driving member is inserted in the second socket, when the rotary cover rotates along the first direction, the driving member can push all the transmission members to move outward and make the first meshing teeth mesh with the inner gear ring, when the rotary cover rotates along the second direction, the transmission member can move inward and make the first meshing teeth disengage from the inner gear ring.

[0007] According to some embodiments of the utility model, the first limiting structure includes a ratchet structure arranged on the inner wall of the mounting shell and at least two pawls arranged on the mounting disk, the pawl includes an elastic connecting part, the free end of the elastic connecting part is provided with a ratchet tooth that cooperates with the ratchet structure, and the elastic connecting parts of all the pawls are vortex-distributed around the rotation axis of the mounting disk.

[0008] According to some embodiments of the utility model, the second limiting structure includes a first limiting portion arranged on the outer periphery of the driving member and two second limiting portions arranged on the mounting plate, the first limiting portion is located between the two second limiting portions, and the first limiting portion can rotate between the two second limiting portions.

[0009] According to some embodiments of the utility model, the locking structure includes an elastic buckle and a locking position, one of the elastic buckle and the locking position is set on the driving member, and the other is set on the mounting plate. When the elastic buckle is locked in the locking position, the rotary cover can drive the driving member to rotate along a first direction. When the rotary cover rotates along a second direction, the elastic buckle can disengage from the locking position.

[0010] According to some embodiments of the utility model, both ends of the elastic cord are rolled up in the buckle, the bottom plate is flexible, and a hook for hooking the elastic cord is provided on the bottom plate.

[0011] According to some embodiments of the utility model, a flexible clamping block is connected to the elastic cord, and when the hook hooks the elastic cord, the flexible clamping block is clamped on the hook.

[0012] According to some embodiments of the utility model, the flexible reflective member is provided with two wire passing holes along the width direction, and the two sides of the elastic cord are passed through the two wire passing holes in a one-to-one correspondence.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0015] Figure 1 A schematic diagram of a trouser drawstring according to an embodiment of the utility model;

[0016] Figure 2 for Figure 1 The schematic diagram of the use of the trouser belt shown;

[0017] Figure 3 for Figure 1 A cross-sectional view of a trouser belt is shown;

[0018] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0019] Figure 5 for Figure 1 An exploded view of the buckle of the trouser belt is shown;

[0020] Figure 6 for Figure 1 An exploded view of a clutch assembly of a trouser belt buckle is shown.

[0021] Reference numerals:

[0022] Bottom plate 100, hook 110, turn buckle 200, mounting shell 210, wire outlet hole 211, ratchet structure 212, take-up wheel 220, inner gear ring 221, rotary cover 230, driving member 240, elastic buckle 241, first limiting portion 242, clutch assembly 250, mounting plate 251, first plug hole 2511, second plug hole 2512, elastic connecting portion 2513, ratchet 2514, clamping position 2515, second limiting portion 2516, transmission member 252, first meshing tooth 2521, accommodating chamber 260, elastic cord 300, pants hole 310, flexible card block 400, flexible reflective member 500, wire passing hole 510. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0026] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0027] Reference Figures 1 to 3 According to the embodiment of the utility model, the trouser drawstring includes a base plate 100, a buckle 200 and an elastic cord 300, wherein the buckle 200 is installed on the base plate 100; the elastic cord 300 is partially rolled up in the buckle 200, and the elastic cord 300 outside the buckle 200 can be hung on the base plate 100 or the buckle 200 and enclosed to form a trouser drawstring hole 310; wherein the buckle 200 can roll up or release the elastic cord 300.

[0028] When the trouser leg is in use, the elastic cord 300 located outside the buckle 200 can be wrapped around the trouser leg and then hung with the bottom plate 100 or the buckle 200, so that the trouser leg is confined in the trouser hole 310, and then the buckle 200 is operated to reel in the elastic cord 300, so as to shrink the trouser hole 310, thereby binding and fixing the trouser leg. After the trouser leg is bound, if the tightness needs to be adjusted, the buckle 200 only needs to be reeled in or released, and this process can be completed with one hand. Therefore, by adopting the above-mentioned arrangement, the trouser leg provided by the utility model can realize the trouser binding function without Velcro, thereby eliminating the problem of Velcro damaging the trousers, and the tightness can be adjusted with one hand, which is convenient and simple.

[0029] In addition, the length of the elastic cord 300 of the trouser belt provided by the utility model can be designed to be longer, so that the trouser belt has the function of binding feet and tying objects: when it is necessary to bind the trouser legs, the excess length of the elastic cord 300 can be rolled up in the buckle 200 to bind the trouser legs; when it is necessary to tie objects, the buckle 200 can release the elastic cord 300 so that the length of the elastic cord 300 meets the length required for tying objects. At this time, the trouser belt can be used as a tie for tying objects, thereby making the trouser belt have more functions.

[0030] Reference Figures 3 to 6According to some embodiments of the utility model, the rotary button 200 includes a mounting shell 210, a take-up wheel 220 and a rotary cover 230. The mounting shell 210 is mounted on the bottom plate 100, and the rotary cover 230 is rotatably covered on the mounting shell 210. The rotary cover 230 and the mounting shell 210 are enclosed to form a receiving chamber 260. The mounting shell 210 is provided with a wire outlet hole 211 communicating with the receiving chamber 260. The take-up wheel 220 is rotatably installed in the receiving chamber 260. The elastic rope 300 is passed through the wire outlet hole 211 and connected to the take-up wheel 220. A clutch assembly 250 is arranged between the rotary cover 230 and the take-up wheel 220. A first limiting structure is arranged between the mounting shell 210 and the clutch assembly 250. A locking structure is arranged between the clutch assembly 250 and the rotary cover 230. The first limiting structure can limit the clutch assembly 250 from rotating relative to the mounting shell 210 in the second direction. When the rotary cover 230 rotates in the first direction, The locking structure locks the relative position between the rotary cover 230 and the clutch assembly 250, and the rotary cover 230 drives the clutch assembly 250 to connect with the take-up wheel 220. As a result, the rotary cover 230 can drive the take-up wheel 220 to rotate through the clutch assembly 250, so that the take-up wheel 220 can reel in the elastic cord 300, and the first limiting structure can limit the clutch assembly 250 and the take-up wheel 220 from rotating in the second direction, thereby preventing the take-up wheel 220 from automatically releasing the elastic cord 300; when the rotary cover 230 rotates in a second direction opposite to the first direction, the locking structure is unlocked, and the rotary cover 230 can drive the clutch assembly 250 to disconnect the connection between the clutch assembly 250 and the take-up wheel 220. At this time, the first limiting structure can only limit the clutch assembly 250 from rotating in the second direction but cannot limit the take-up wheel 220 from rotating. As a result, the elastic cord 300 can be released from the rotary buckle 200 under the action of external force. With the above arrangement, the rotary buckle 200 can be rolled up or the elastic cord 300 can be released by operating the rotary cover 230, which is simple and convenient to operate.

[0031] In the specific implementation process, after using the trousers belt for a period of time, if people find that the trouser legs are tied too tightly by the trousers belt and become uncomfortable, they can rotate the rotary cover 230 in the second direction. Since the trouser legs will exert an outward force on the trousers belt, the elastic cord 300 can be automatically released from the rotary buckle 200, so that the trousers belt will not be tied too tightly. If the trousers belt needs to be further loosened, the elastic cord 300 can be pulled out of the rotary buckle 200 by hand. When the trouser legs need to be further tightened, people can rotate the rotary cover 230 in the first direction to reel in a part of the elastic cord 300. With the above arrangement, the trousers belt can be adjusted in tension through the rotary buckle 200, and the rotary buckle 200 can be operated by one hand during the adjustment process, so the tension adjustment is convenient.

[0032] When the trouser belt needs to be removed, the rotary cover 230 can be rotated in the second direction, and then the elastic cord 300 is partially pulled out of the rotary buckle 200, and the connection between the elastic cord 300 and the base plate 100 or the rotary buckle 200 is released, and the trouser belt can be removed.

[0033] Reference Figures 4 to 6 According to some embodiments of the utility model, the end of the take-up wheel 220 facing the rotary cover 230 is provided with an inner gear ring 221, the clutch assembly 250 includes a mounting plate 251 and at least two transmission members 252, one end of the mounting plate 251 is rotatably inserted in the inner gear ring 221, the outer periphery of one end of the mounting plate 251 is provided with at least two first plug holes 2511, the mounting plate 251 is provided with a second plug hole 2512 facing the rotary cover 230, the second plug hole 2512 is connected with all the first plug holes 2511, all the transmission members 252 are inserted into all the first plug holes 2511 one by one, the transmission member 252 is provided with a first meshing tooth 2521, and the rotary cover 230 is connected with a driving Part 240, the driving part 240 is inserted into the second plug hole 2512, and when the rotary cover 230 rotates along the first direction, the driving part 240 can push all the transmission parts 252 to move outward and make the first meshing teeth 2521 mesh with the inner gear ring 221, thereby, the rotary cover 230 can drive the take-up wheel 220 to rotate along the first direction through the clutch assembly 250 to reel in the elastic rope 300; when the rotary cover 230 rotates along the second direction, the transmission part 252 can move inward and make the first meshing teeth 2521 disengage from the inner gear ring 221, thereby, the clutch assembly 250 disconnects the connection between the rotary cover 230 and the take-up wheel 220, and at this time, the take-up wheel 220 can rotate along the second direction.

[0034] In a specific implementation process, the first direction may be a clockwise direction, in which case the second direction is a counterclockwise direction; the first direction may also be a counterclockwise direction, in which case the second direction is a clockwise direction.

[0035] Reference Figures 5 and 6 According to some embodiments of the present invention, the first limiting structure includes a ratchet structure 212 disposed on the inner wall of the mounting shell 210 and at least two ratchets disposed on the mounting plate 251, the ratchets include an elastic connection portion 2513, the free end of the elastic connection portion 2513 is provided with ratchet teeth 2514 that cooperate with the ratchet structure 212, and the elastic connection portions 2513 of all the ratchets are vortex-distributed around the rotation axis of the mounting plate 251. With the above arrangement, the first limiting structure can limit the clutch assembly 250 from rotating in the second direction and allow the clutch assembly 250 to rotate in the first direction.

[0036] It should be noted that the above-mentioned first limiting structure can also be set in other ways. For example, the above-mentioned ratchet structure 212 can be replaced by a plurality of slots distributed circumferentially around the axis of the mounting shell 210. The mounting disk 251 is provided with at least two elastic snap-fit ​​plates spirally arranged around the rotation axis of the mounting disk 251. The rotation direction of the elastic snap-fit ​​plates is the same as the first direction. The free end of the elastic snap-fit ​​plate can be snapped into any one of the slots. Therefore, when the clutch assembly 250 has a tendency to rotate in the second direction, the elastic snap-fit ​​plate will be snapped into one of the slots to limit the clutch assembly 250 from rotating in the second direction. When the clutch assembly 250 rotates in the first direction, the elastic snap-fit ​​plate can automatically cross any one of the slots.

[0037] Reference Figures 5 and 6 According to some embodiments of the utility model, a second limiting structure is provided between the clutch assembly 250 and the rotary cover 230, and the second limiting structure is used to limit the range of rotation of the rotary cover 230 relative to the clutch assembly 250 in the second direction, so as to avoid the clutch assembly 250 and the take-up wheel 220 from being reconnected when the rotary cover 230 rotates too much in the second direction.

[0038] Reference Figures 5 and 6 According to some embodiments of the utility model, the second limiting structure includes a first limiting portion 242 arranged on the outer periphery of the driving member 240 and two second limiting portions 2516 arranged on the mounting disk 251. The first limiting portion 242 is located between the two second limiting portions 2516. The first limiting portion 242 can rotate between the two second limiting portions 2516, thereby limiting the range of relative rotation of the rotary cover 230 relative to the mounting disk 251.

[0039] Reference Figures 5 and 6 According to some embodiments of the utility model, the locking structure includes an elastic buckle 241 and a locking position 2515, one of which is disposed on the driving member 240, and the other is disposed on the mounting plate 251, and when the elastic buckle 241 is locked in the locking position 2515, the rotary cover 230 can drive the driving member 240 to rotate in a first direction, and when the rotary cover 230 rotates in a second direction, the elastic buckle 241 can be disengaged from the locking position 2515. With the above arrangement, the locking structure can prevent the rotary cover 230 from automatically rotating relative to the clutch assembly 250 in the second direction, and prevent the rotary cover 230 from automatically driving the clutch assembly 250 to disconnect from the take-up wheel 220.

[0040] Of course, it is conceivable that the above-mentioned locking structure may also be arranged in other ways. For example, the elastic buckle 241 may be replaced by a spring top bead that can automatically retract.

[0041] It should be noted that the above-mentioned turn button 200 can also be arranged in other ways. For example, the turn button 200 includes a mounting shell 210, a take-up wheel 220 and a rotary cover 230. The mounting shell 210 is mounted on the bottom plate 100, and the rotary cover 230 is rotatably covered on the mounting shell 210. The rotary cover 230 and the mounting shell 210 are enclosed to form a receiving cavity 260. The mounting shell 210 is provided with a wire outlet hole 211 connected to the receiving cavity 260. The take-up wheel 220 is rotated to mount the mounting shell 210. Installed in the accommodating cavity 260, the elastic cord 300 is passed through the outlet hole 211 and connected to the take-up wheel 220, the rotary cover 230 is fixedly connected to the take-up wheel 220, and a damping structure is arranged between the rotary cover 230 and the mounting shell 210 or between the take-up wheel 220 and the mounting shell 210. When people do not rotate the rotary cover 230, the damping structure can lock the position of the take-up wheel 220 to prevent the take-up wheel 220 from automatically rotating when people do not rotate the rotary cover 230. Among them, the damping structure can include a plurality of positioning tooth grooves arranged in an annular shape on the inner wall of the mounting shell 210 and a plurality of spring top beads arranged on the take-up wheel 220, and the spring top beads can be clamped on any one of the positioning tooth grooves. Therefore, when the rotary cover 230 of the rotary buckle 200 is rotated along the first direction, the elastic cord 300 can be rolled up, and when the rotary cover 230 is rotated along the second direction, the elastic cord 300 can be released. With the above arrangement, when adjusting the tightness of the trouser belt, it is only necessary to roll up or release the elastic cord 300. The entire adjustment process can be operated with one hand, and the adjustment is convenient and simple.

[0042] Reference Figure 1 According to some embodiments of the present invention, both ends of the elastic cord 300 are rolled up in the turn buckle 200, the bottom plate 100 is flexible, and a hook 110 for hooking the elastic cord 300 is provided on the bottom plate 100. With the above arrangement, the elastic cord 300 is U-shaped, and the hook 110 can just directly hook the elastic cord 300, wherein the elastic cord 300 has two edges for tying the trouser legs, which can reduce the stress concentration between the elastic cord 300 and the trouser legs and improve the overall strength of the trouser belt.

[0043] Reference Figure 1 and Figure 2 According to some embodiments of the present invention, a flexible clamping block 400 is connected to the elastic cord 300. When the hook 110 hooks the elastic cord 300, the flexible clamping block 400 is clamped on the hook 110 to prevent the elastic cord 300 from automatically detaching from the hook 110.

[0044] Reference Figure 1 and Figure 2 According to some embodiments of the present invention, the elastic cord 300 is provided with a flexible reflector 500. The flexible reflector 500 can reflect light at night to serve as a reminder to passing vehicles.

[0045] Reference Figure 1 and Figure 2 According to some embodiments of the utility model, the flexible reflector 500 is provided with two wire holes 510 along the width direction, and the two sides of the elastic cord 300 are correspondingly passed through the two wire holes 510. With the above arrangement, the flexible reflector 500 is easy to install, and the flexible reflector 500 can increase the contact area between the trouser belt and the trouser leg to avoid stress concentration. In addition, the flexible reflector 500 can also play a good decorative role.

[0046] Reference Figure 1 and Figure 2 According to some embodiments of the present invention, the cross section of the flexible reflector 500 is annular, and the middle of the flexible reflector 500 is sewn together, thereby dividing the internal space of the flexible reflector 500 to form two wire holes 510.

[0047] It is conceivable that in other embodiments, the elastic cord 300 mentioned above may also be arranged in other ways. For example, one end of the elastic cord 300 is rolled up in the buckle 200, and the other end is provided with a hanging portion, and the hanging portion is provided with a hanging hole. Then, the hook or buckle 200 on the base plate 100 can be inserted into the hanging hole to hook the elastic cord 300.

[0048] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The embodiment is described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiment, and various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the present purpose.

Claims

1. A trouser belt. It is characterized in that include: Bottom plate (100); A turn button (200) mounted on the bottom plate (100); An elastic cord (300) is partially rolled up in the buckle (200), and the elastic cord (300) outside the buckle (200) can be hung on the bottom plate (100) or the buckle (200) to enclose a trouser hole (310); Wherein, the rotary buckle (200) can reel in or release the elastic cord (300); The rotary buckle (200) comprises a mounting shell (210), a take-up wheel (220) and a rotary cover (230); the mounting shell (210) is mounted on the bottom plate (100); the rotary cover (230) is rotatably mounted on the mounting shell (210); the rotary cover (230) and the mounting shell (210) are combined to form a receiving cavity (260); the mounting shell (210) is provided with a wire outlet hole (211) communicating with the receiving cavity (260); the take-up wheel (220) is rotatably mounted in the receiving cavity (260); the elastic rope (300) is passed through the wire outlet hole (211) and is connected to the take-up wheel (220); a clutch assembly (250) is arranged between the rotary cover (230) and the take-up wheel (220); the mounting shell (210) and the clutch assembly are connected to each other. A first limiting structure is arranged between the clutch assembly (250), and a locking structure is arranged between the clutch assembly (250) and the rotary cover (230), wherein the first limiting structure can limit the clutch assembly (250) from rotating relative to the mounting shell (210) along a second direction, wherein when the rotary cover (230) rotates along the first direction, the locking structure locks the relative position between the rotary cover (230) and the clutch assembly (250), and the rotary cover (230) drives the clutch assembly (250) to connect with the take-up wheel (220), and when the rotary cover (230) rotates along a second direction opposite to the first direction, the locking structure is unlocked, and the rotary cover (230) drives the clutch assembly (250) to disconnect the connection between the clutch assembly (250) and the take-up wheel (220).

2. The trouser drawstring according to claim 1, It is characterized in that An inner gear ring (221) is arranged at one end of the take-up wheel (220) facing the rotary cover (230); the clutch assembly (250) comprises a mounting plate (251) and at least two transmission members (252); one end of the mounting plate (251) is rotatably inserted in the inner gear ring (221); at least two first plug holes (2511) are arranged on the outer periphery of one end of the mounting plate (251); the mounting plate (251) is provided with a second plug hole (2512) facing the rotary cover (230); the second plug hole (2512) is connected to all the first plug holes (2511); all the transmission members (252) are inserted in all the first plug holes (2511) in a one-to-one correspondence. A plug hole (2511), the transmission member (252) is provided with a first meshing tooth (2521), the rotary cover (230) is connected with a driving member (240), the driving member (240) is inserted into the second plug hole (2512), when the rotary cover (230) rotates in a first direction, the driving member (240) can push all the transmission members (252) to move outward and make the first meshing tooth (2521) and the inner gear ring (221) mesh with each other, when the rotary cover (230) rotates in a second direction, the transmission member (252) can move inward and make the first meshing tooth (2521) and the inner gear ring (221) disengage from each other.

3. The trouser drawstring according to claim 2, It is characterized in that The first limiting structure comprises a ratchet structure (212) arranged on the inner wall of the mounting shell (210) and at least two elastic connecting parts (2513) arranged on the mounting plate (251), and the free end of the elastic connecting part (2513) is provided with a ratchet tooth (2514) that cooperates with the ratchet structure (212), and all the elastic connecting parts (2513) are vortex-distributed around the rotation axis of the mounting plate (251).

4. The trouser belt according to claim 1, It is characterized in that A second limiting structure is provided between the clutch assembly (250) and the rotary cover (230), and the second limiting structure is used to limit the range of rotation of the rotary cover (230) relative to the clutch assembly (250) in a second direction.

5. The trouser drawstring according to claim 2, It is characterized in that The locking structure comprises an elastic buckle (241) and a locking position (2515); one of the elastic buckle (241) and the locking position (2515) is arranged on the driving member (240), and the other is arranged on the mounting plate (251); when the elastic buckle (241) is locked in the locking position (2515), the rotary cover (230) can drive the driving member (240) to rotate along a first direction; when the rotary cover (230) rotates along a second direction, the elastic buckle (241) can be disengaged from the locking position (2515).

6. The trouser drawstring according to claim 1, It is characterized in that Both ends of the elastic cord (300) are rolled up in the rotary buckle (200); the bottom plate (100) is flexible; and a hook (110) for hooking the elastic cord (300) is provided on the bottom plate (100).

7. The trouser drawstring according to claim 6, It is characterized in that The elastic cord (300) is connected to a flexible clamping block (400), and when the hook (110) hooks the elastic cord (300), the flexible clamping block (400) is clamped on the hook (110).

8. The trouser drawstring according to claim 6, It is characterized in that The elastic cord (300) is provided with a flexible reflective member (500).

9. The trouser drawstring according to claim 8, It is characterized in that The flexible reflective member (500) is provided with two wire-passing holes (510) along the width direction, and the two sides of the elastic cord (300) are passed through the two wire-passing holes (510) in a one-to-one correspondence.

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