Telescopic buckle capable of switching use states

Abstract

The utility model discloses a telescopic buckle capable of switching use states, which comprises a shell, a winding wheel, a coil spring, a telescopic rope, a gear and a locking component, and the winding wheel is rotatably mounted in the shell; the two ends of the coil spring are connected to the shell and the winding wheel respectively, the telescopic rope is wound around the winding wheel, one end of the telescopic rope penetrates out of the shell and is connected with a connector, and the gear is arranged on one side of the winding wheel. A first pawl and a second pawl of the locking assembly are respectively and adjustably arranged in the shell, so that the gear and the winding wheel can be limited to rotate along a first rotating direction by adjusting the first pawl to be clamped between gear teeth of the gear; the first rotation direction is different from the second rotation direction, so that the telescopic buckle has a plurality of different use states, a user can switch the states according to the use requirements, the functions are rich and diversified, and the telescopic buckle is convenient to use. The use is flexible and changeable.

Description

Technical Field

[0001] This utility model relates to the field of telescopic buckle technology, and in particular to a telescopic buckle with switchable usage states. Background Technology

[0002] Telescopic buckles can be used as locks, keychains, live fish clips, fishing hooks, etc. When used as keychains, they are exquisitely small and come in a variety of shapes, making them a common everyday item. Telescopic buckles are typically hung on trouser belts. Keys or other items are hung on a key ring and connected to the buckle via a telescopic cord. To use a key, simply extend the cord; after use, a spring reel inside the buckle automatically retracts the cord, allowing the entire key and key ring to be retrieved.

[0003] When using the attached items, the spring reel's elastic winding action causes the spring reel to wind up any loose or excess retractable cord that is loosened between the item and the belt buckle. Existing retractable buckles generally lack a locking mechanism for the extended state of the retractable cord, leaving it constantly taut. This makes it inconvenient to use items freely for extended periods, resulting in a poor user experience and limited functionality. Utility Model Content

[0004] The purpose of this invention is to provide a telescopic buckle with switchable usage states, aiming to solve at least one of the technical problems existing in the prior art.

[0005] To achieve the above objectives, the present invention provides a telescopic buckle with switchable usage states, comprising:

[0006] case;

[0007] A take-up reel is rotatably mounted inside the housing;

[0008] A coil spring, the two ends of which are respectively connected to the housing and the winding wheel, the coil spring being used to apply a force to the winding wheel in a first rotation direction or a second rotation direction;

[0009] A telescopic rope, which is wound around the take-up reel, and one end of the telescopic rope passes through the housing and is connected to a connector;

[0010] A gear, the gear being disposed on one side of the take-up reel;

[0011] The locking assembly includes a first pawl and a second pawl, which are respectively movably disposed within the housing. By adjusting the first pawl to engage between the teeth of the gear, the gear and the winding wheel can be restricted to rotate in a first rotation direction. By adjusting the second pawl to engage between the teeth of the gear, the gear and the winding wheel can be restricted to rotate in a second rotation direction. The first rotation direction and the second rotation direction are different.

[0012] Furthermore, the locking assembly also includes a first elastic element and a second elastic element. The first elastic element is disposed between the first pawl and the inner wall of the housing, and the first elastic element is used to apply a force to the first end of the first pawl in the direction of approaching the gear teeth. The second elastic element is disposed between the second pawl and the inner wall of the housing, and the second elastic element is used to apply a force to the first end of the second pawl in the direction of approaching the gear teeth.

[0013] Furthermore, the first pawl and the second pawl are rotatably disposed within the housing, and the first pawl has a first receiving groove, the first elastic element is disposed within the first receiving groove, the second pawl has a second receiving groove, and the second elastic element is disposed within the second receiving groove.

[0014] Furthermore, the first receiving groove is an arc-shaped groove extending around the rotation axis of the first pawl, and the second receiving groove is an arc-shaped groove extending around the rotation axis of the second pawl. The inner wall of the housing is provided with a first positioning post and a second positioning post. The first positioning post is located in the first receiving groove, and the second positioning post is located in the second receiving groove. The two ends of the first elastic member abut against the inner wall of the first positioning post and the first receiving groove, respectively, and the two ends of the second elastic member abut against the inner wall of the second positioning post and the second receiving groove, respectively.

[0015] Furthermore, it also includes a first toggle key and a second toggle key, which are movably disposed on the outer side of the housing, and the side wall of the housing is provided with a first through groove and a second through groove. One end of the first toggle key passes through the first through groove and is correspondingly disposed with the first pawl, so that by adjusting the first toggle key, the first pawl is driven to engage between the teeth of the gear. One end of the second toggle key passes through the second through groove and is correspondingly disposed with the second pawl, so that by adjusting the second toggle key, the second pawl is driven to engage between the teeth of the gear.

[0016] Furthermore, the first toggle key and the second toggle key are slidably disposed on the outside of the housing. One end of the first toggle key is provided with a first pusher, which abuts against the second end of the first pawl. One end of the second toggle key is provided with a second pusher, which abuts against the second end of the second pawl.

[0017] Furthermore, the side wall of the housing is provided with a first guide groove and a second guide groove, the inner side of the first toggle key is provided with a first guide post, the first guide post is slidably embedded in the first guide groove, and the inner side of the second toggle key is provided with a second guide post, the second guide post is slidably embedded in the second guide groove.

[0018] Furthermore, a first positioning component is provided between the inner side of the first toggle button and the housing, so that the first toggle button can be positioned in a first position for locking the first pawl and a second position for unlocking the first pawl through the first positioning component. A second positioning component is provided between the inner side of the second toggle button and the housing, so that the second toggle button can be positioned in a third position for locking the second pawl and a fourth position for unlocking the second pawl through the second positioning component.

[0019] Further, the first positioning component includes a first positioning bead and a first spring. A first receiving groove is formed on the outer side of the housing, and the first positioning bead is partially received within the first receiving groove. The first spring abuts against the inner wall of the first receiving groove and the first positioning bead. The first toggle key has two first positioning holes spaced apart along its sliding direction, so that the first toggle key is positioned at a first position and a second position respectively by the first positioning bead being received in the two first positioning holes; and / or

[0020] The second positioning component includes a second positioning bead and a second spring. A second receiving groove is provided on the outer side of the housing. The second positioning bead is partially received in the second receiving groove. The second spring abuts against the inner wall of the second receiving groove. The second toggle key is provided with two second positioning holes at intervals along its sliding direction, so that the second toggle key can be positioned in the third position and the fourth position respectively by the second positioning bead being received in the two second positioning holes respectively.

[0021] Furthermore, the gear is a gear ring structure, with multiple teeth evenly arranged on its inner circumference. The first and second pawls are both located on the inner ring of the gear. A receiving space is provided on the other side of the take-up reel, and a shaft is provided inside the housing. The take-up reel is sleeved on the shaft. The coil spring is housed within the receiving space, with one end of the coil spring secured to the inner wall of the receiving space and the other end secured to the shaft; and / or

[0022] The bottom of the housing has a through-groove extending along its width, and one end of the telescopic rope passes through the through-groove, exiting from the housing and connecting to a connector.

[0023] As can be seen from the above technical solution, the telescopic buckle of this utility model, by adjusting the first pawl to engage between the teeth of the gear, can restrict the rotation of the gear and the winding wheel in the first rotation direction. In this way, the winding wheel is locked and cannot rotate to wind up the telescopic rope. This ensures that the telescopic rope is not always taut when stretched, allowing for free use of the hung items for extended periods. It is convenient to use and provides a good user experience. Moreover, the winding wheel can rotate in the second rotation direction at this time, allowing the telescopic rope to be stretched at will for use, making it even more convenient to use. Alternatively, by adjusting the second pawl to engage between the teeth of the gear, the gear and the winding wheel can be restricted to rotate in the second rotation direction. In this case, the winding wheel cannot rotate in the second rotation direction, and the telescopic rope cannot be stretched. This design allows the telescopic buckle to have multiple different usage states, which users can switch according to their needs. It is functionally diverse and flexible in use.

[0024] To make the technical concept, other objectives, advantages, features and functions of this utility model clearer and easier to understand, preferred embodiments will be specifically described in the following detailed description, and will be illustrated in conjunction with the accompanying drawings. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of a telescopic buckle with switchable usage states provided in an embodiment of this application;

[0027] Figure 2 This is a schematic diagram of another perspective of the telescopic buckle with switchable usage states provided in an embodiment of this application;

[0028] Figure 3 This is an exploded view of the structure of a telescopic buckle with switchable usage states provided in an embodiment of this application;

[0029] Figure 4 This is an exploded view of another aspect of the structure of a telescopic buckle with switchable usage states provided in an embodiment of this application;

[0030] Figure 5 This is a structural schematic diagram of the first usage state of a telescopic buckle with switchable usage states provided in an embodiment of this application;

[0031] Figure 6This is a structural schematic diagram of the second usage state of a telescopic buckle with switchable usage states provided in an embodiment of this application;

[0032] Figure 7 This is a structural schematic diagram of the third usage state of a telescopic buckle that can be switched between usage states, provided in an embodiment of this application.

[0033] The above figures include the following reference numerals:

[0034] 100, Housing; 110, First through groove; 120, Second through groove; 130, First guide groove; 140, Second guide groove; 150, First positioning post; 160, Second positioning post; 170, Shaft; 180, Strip groove;

[0035] 200. Winding reel; 300. Coil spring; 400. Telescopic rope; 500. Gear;

[0036] 610. First pawl; 611. First receiving groove; 612. First elastic element;

[0037] 620. Second pawl; 621. Second receiving groove; 622. Second elastic element;

[0038] 710. First toggle key; 711. First pusher; 712. First guide post; 713. First positioning hole;

[0039] 720. Second toggle key; 721. Second pusher; 722. Second guide post; 723. Second positioning hole;

[0040] 810. First positioning component; 811. First positioning bead; 820. Second positioning component; 821. Second positioning bead. Detailed Implementation

[0041] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0042] Please refer to the following: Figures 1 to 7This embodiment provides a telescopic buckle with switchable usage states, including a housing 100, a take-up reel 200, a coil spring 300, a telescopic rope 400, a gear 500, and a locking assembly. The take-up reel 200 is rotatably mounted inside the housing 100. The two ends of the coil spring 300 are respectively connected to the housing 100 and the take-up reel 200. The coil spring 300 applies a force to the take-up reel 200 in a first rotation direction or a second rotation direction, the specific direction depending on how the coil spring 300 is configured. The telescopic rope 400 passes around the take-up reel 200, and one end of the telescopic rope 400 extends out of the housing 100 and is connected to a connector. The gear 500 is located at the take-up reel 200. One side of the winding reel 200; the locking assembly includes a first pawl 610 and a second pawl 620. The first pawl 610 and the second pawl 620 are respectively movably disposed within the housing 100 so that by adjusting the first pawl 610 to engage between the teeth of the gear 500, the gear 500 and the winding reel 200 can be restricted to rotate in a first rotation direction. By adjusting the second pawl 620 to engage between the teeth of the gear 500, the gear 500 and the winding reel 200 can be restricted to rotate in a second rotation direction. The first rotation direction and the second rotation direction are different. When the first rotation direction is forward, the second rotation direction is reverse.

[0043] As can be seen, the telescopic buckle in this embodiment, by adjusting the first pawl 610 to engage between the teeth of the gear 500, can restrict the rotation of the gear 500 and the winding wheel 200 along the first rotation direction. This locks the winding wheel 200, preventing it from rotating to wind up the telescopic rope 400. Thus, the telescopic rope 400 is not constantly taut when stretched, allowing for extended use of the hung items. This is convenient and provides a good user experience. Furthermore, the winding wheel 200... The telescopic rope 400 can be rotated in the second rotation direction, allowing it to be stretched at will for easier use. Alternatively, by adjusting the second pawl 620 to engage between the teeth of the gear 500, the gear 500 and the winding wheel 200 can be restricted from rotating in the second rotation direction. In this case, the winding wheel 200 cannot rotate in the second rotation direction, and the telescopic rope 400 cannot be stretched. This design allows the telescopic buckle to have multiple different usage states, which users can switch according to their needs. It is versatile and flexible in use.

[0044] In this embodiment, the locking assembly further includes a first elastic element 612 and a second elastic element 622. The first elastic element 612 is disposed between the first pawl 610 and the inner wall of the housing 100. The first elastic element 612 is used to apply a force to the first end of the first pawl 610 in the direction of approaching the teeth of the gear 500. The second elastic element 622 is disposed between the second pawl 620 and the inner wall of the housing 100. The second elastic element 622 is used to apply a force to the first end of the second pawl 620 in the direction of approaching the teeth of the gear 500.

[0045] Specifically, the first pawl 610 and the second pawl 620 are rotatably disposed within the housing 100. The first pawl 610 has a first receiving groove 611 and a first elastic member 612 is disposed within the first receiving groove 611. The second pawl 620 has a second receiving groove 621 and a second elastic member 622 is disposed within the second receiving groove 621.

[0046] Furthermore, the first receiving groove 611 is an arc-shaped groove extending around the rotation axis of the first pawl 610, and the second receiving groove 621 is an arc-shaped groove extending around the rotation axis of the second pawl 620. The inner wall of the housing 100 is provided with a first positioning post 150 and a second positioning post 160. The first positioning post 150 extends into the first receiving groove 611, and the second positioning post 160 extends into the second receiving groove 621. The two ends of the first elastic member 612 abut against the inner wall of the first positioning post 150 and the first receiving groove 611, respectively, and the two ends of the second elastic member 622 abut against the inner wall of the second positioning post 160 and the second receiving groove 621, respectively.

[0047] In this embodiment, the telescopic buckle further includes a first toggle key 710 and a second toggle key 720. The first toggle key 710 and the second toggle key 720 are respectively movably disposed on the outer side of the housing 100, and the side wall of the housing 100 is provided with a first through groove 110 and a second through groove 120. One end of the first toggle key 710 passes through the first through groove 110 and is correspondingly disposed with the second end of the first pawl 610, so that by adjusting the first toggle key 710, the first pawl 610 is driven to engage between the teeth of the gear 500. One end of the second toggle key 720 passes through the second through groove 120 and is correspondingly disposed with the second end of the second pawl 620, so that by adjusting the second toggle key 720, the second pawl 620 is driven to engage between the teeth of the gear 500.

[0048] Specifically, the first toggle key 710 and the second toggle key 720 are slidably disposed on the outside of the housing 100. One end of the first toggle key 710 is provided with a first pusher 711, which abuts against the second end of the first pawl 610. One end of the second toggle key 720 is provided with a second pusher 721, which abuts against the second end of the second pawl 620.

[0049] Furthermore, the side wall of the housing 100 is provided with a first guide groove 130 and a second guide groove 140. The inner side of the first toggle key 710 is provided with a first guide post 712, which is slidably embedded in the first guide groove 130. The inner side of the second toggle key 720 is provided with a second guide post 722, which is slidably embedded in the second guide groove 140.

[0050] The housing 100 includes a left housing and a right housing that interlock. A first guide post 712 is threadedly connected to a first toggle key 710. The diameter of the end of the first guide post 712 is greater than the width of the first guide groove 130, so that the end of the first guide post 712 abuts against the inner side of the housing 100. This prevents the first guide post 712 of the first toggle key 710 from disengaging from the first guide groove 130. A second guide post 722 is threadedly connected to a second toggle key 720. The diameter of the end of the second guide post 722 is greater than the width of the second guide groove 140, so that the end of the second guide post 722 abuts against the inner side of the housing 100. This prevents the second guide post 722 of the second toggle key 720 from disengaging from the second guide groove 140.

[0051] In this embodiment, a first positioning component 810 is provided between the inner side of the first toggle key 710 and the housing 100, so that the first toggle key 710 can be positioned in a first position locking the first pawl 610 and a second position unlocking the first pawl 610 by means of the first positioning component 810. A second positioning component 820 is provided between the inner side of the second toggle key 720 and the housing 100, so that the second toggle key 720 can be positioned in a third position locking the second pawl 620 and a fourth position unlocking the second pawl 620 by means of the second positioning component 820.

[0052] Specifically, the first positioning component 810 includes a first positioning bead 811 and a first spring. A first receiving groove is provided on the outer side of the housing 100. The first positioning bead 811 is partially received in the first receiving groove. The first spring abuts between the first positioning bead 811 and the inner wall of the first receiving groove. The first toggle key 710 is provided with two first positioning holes 713 at intervals along its sliding direction, so that the first toggle key 710 is positioned at the first position and the second position respectively by the first positioning bead 811 being received in the two first positioning holes 713 respectively. The second positioning component 820 includes a second positioning bead 821 and a second spring. A second receiving groove is provided on the outer side of the housing 100. The second positioning bead 821 is partially received in the second receiving groove. The second spring abuts between the second positioning bead 821 and the inner wall of the second receiving groove. The second toggle key 720 is provided with two second positioning holes 723 at intervals along its sliding direction, so that the second toggle key 720 is positioned at the third position and the fourth position respectively by the second positioning bead 821 being received in the two second positioning holes 723 respectively.

[0053] Furthermore, gear 500 has a gear ring structure, with multiple teeth evenly arranged on its inner circumference. The first pawl 610 and the second pawl 620 are both located on the inner ring of gear 500. A receiving space is provided on the other side of the take-up wheel 200, and a shaft 170 is provided inside the housing 100. The take-up wheel 200 is sleeved on the shaft 170. A coil spring 300 is housed within the receiving space, with one end of the coil spring 300 engaged with the inner wall of the receiving space. The other end of the coil spring 300... The end is clamped on the shaft 170; the bottom of the housing 100 extends through a strip groove 180 along its width direction, one end of the telescopic rope 400 passes through the strip groove 180 from inside the housing 100 and is connected to a connector (not shown in the figure). The diameter of the connector is larger than the width of the strip groove 180 so that the telescopic rope 400 can move left and right along the strip groove 180, increasing the activity space of the end of the telescopic rope 400 and the connector, which can be conveniently used in some applications.

[0054] like Figure 7 In the usage state shown, the first pawl 610 is in the locked state and the second pawl 620 is in the unlocked state. At this time, the winding wheel 200 cannot rotate counterclockwise to wind up the telescopic rope 400, but the winding wheel 200 can rotate clockwise to release the telescopic rope 400. The telescopic rope 400 can be stretched. When the user pulls the telescopic rope 400, the winding wheel 200 rotates clockwise and can push the first pawl 610 to swing clockwise and compress the first elastic element 612.

[0055] like Figure 6In the usage state shown, the first pawl 610 is in the unlocked state and the second pawl 620 is in the locked state. At this time, the winding wheel 200 cannot rotate clockwise to release the telescopic rope 400, but the winding wheel 200 can be driven to rotate counterclockwise by the coil spring 300 to wind up the telescopic rope 400. The winding wheel 200 rotates counterclockwise and can push the second pawl 620 to swing counterclockwise and compress the second elastic element 622. This usage state can be used in scenarios such as fishing hooks.

[0056] like Figure 5 In the usage state shown, the first pawl 610 is locked and the second pawl 620 is locked. At this time, the winding wheel 200 can neither rotate clockwise nor counterclockwise. That is, the winding wheel 200 can neither release the telescopic rope 400 nor wind up the telescopic rope 400. The length of the telescopic rope 400 is fixed and can be used in some specific usage scenarios.

[0057] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0058] The telescopic buckle of this utility model restricts the rotation of the gear 500 and the winding wheel 200 in the first rotation direction by engaging the first pawl 610 between the teeth of the gear 500. This locks the winding wheel 200, preventing it from rotating to wind up the telescopic rope 400. This ensures that the telescopic rope 400 is not constantly taut when stretched, allowing for extended use of the hung items. It is convenient and provides a good user experience. Furthermore, the winding wheel 200 can rotate in the second rotation direction, allowing the telescopic rope 400 to be stretched freely, making it even more convenient. Alternatively, by engaging the second pawl 620 between the teeth of the gear 500, the gear 500 and the winding wheel 200 can be restricted to rotate in the second rotation direction. In this case, the winding wheel 200 cannot rotate in the second rotation direction, and the telescopic rope 400 cannot be stretched. This design allows users to switch the telescopic buckle's usage state according to their needs, offering a variety of functions and flexible application.

[0059] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0060] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0061] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0062] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0063] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0064] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" in this article describes another type of relationship between related objects, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the related objects before and after it are in an "or" relationship.

[0065] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A telescopic buckle with switchable usage states, characterized in that, include: case; A take-up reel is rotatably mounted inside the housing; A coil spring, the two ends of which are respectively connected to the housing and the winding wheel, the coil spring being used to apply a force to the winding wheel in a first rotation direction or a second rotation direction; A telescopic rope, which is wound around the take-up reel, and one end of the telescopic rope passes through the housing and is connected to a connector; A gear, the gear being disposed on one side of the take-up reel; The locking assembly includes a first pawl and a second pawl, which are respectively movably disposed within the housing. By adjusting the first pawl to engage between the teeth of the gear, the gear and the winding wheel can be restricted to rotate in a first rotation direction. By adjusting the second pawl to engage between the teeth of the gear, the gear and the winding wheel can be restricted to rotate in a second rotation direction. The first rotation direction and the second rotation direction are different.

2. The telescopic buckle with switchable usage states according to claim 1, characterized in that, The locking assembly further includes a first elastic element and a second elastic element. The first elastic element is disposed between the first pawl and the inner wall of the housing, and the first elastic element is used to apply a force to the first end of the first pawl in the direction of approaching the gear teeth. The second elastic element is disposed between the second pawl and the inner wall of the housing, and the second elastic element is used to apply a force to the first end of the second pawl in the direction of approaching the gear teeth.

3. The telescopic buckle with switchable usage states according to claim 2, characterized in that, The first pawl and the second pawl are rotatably disposed within the housing, and the first pawl has a first receiving groove, the first elastic element is disposed within the first receiving groove, the second pawl has a second receiving groove, and the second elastic element is disposed within the second receiving groove.

4. The telescopic buckle with switchable usage states according to claim 3, characterized in that, The first receiving groove is an arc-shaped groove extending around the rotation axis of the first pawl, and the second receiving groove is an arc-shaped groove extending around the rotation axis of the second pawl. The inner wall of the housing is provided with a first positioning post and a second positioning post. The first positioning post is located in the first receiving groove, and the second positioning post is located in the second receiving groove. The two ends of the first elastic member abut against the inner wall of the first positioning post and the first receiving groove, respectively, and the two ends of the second elastic member abut against the inner wall of the second positioning post and the second receiving groove, respectively.

5. The telescopic buckle with switchable usage state according to any one of claims 1 to 4, characterized in that, It also includes a first toggle key and a second toggle key, which are movably disposed on the outer side of the housing, and the side wall of the housing is provided with a first through groove and a second through groove. One end of the first toggle key passes through the first through groove and is correspondingly disposed with the first pawl, so that by adjusting the first toggle key, the first pawl is driven to engage between the teeth of the gear. One end of the second toggle key passes through the second through groove and is correspondingly disposed with the second pawl, so that by adjusting the second toggle key, the second pawl is driven to engage between the teeth of the gear.

6. The telescopic buckle with switchable usage states according to claim 5, characterized in that, The first toggle key and the second toggle key are slidably disposed on the outside of the housing. One end of the first toggle key is provided with a first pusher, which abuts against the second end of the first pawl. One end of the second toggle key is provided with a second pusher, which abuts against the second end of the second pawl.

7. The telescopic buckle with switchable usage states according to claim 6, characterized in that, The side wall of the housing is provided with a first guide groove and a second guide groove. A first guide post is provided on the inner side of the first toggle key and is slidably embedded in the first guide groove. A second guide post is provided on the inner side of the second toggle key and is slidably embedded in the second guide groove.

8. The telescopic buckle with switchable usage states according to claim 5, characterized in that, A first positioning component is provided between the inner side of the first toggle button and the housing, so that the first toggle button can be positioned in a first position for locking the first pawl and a second position for unlocking the first pawl through the first positioning component. A second positioning component is provided between the inner side of the second toggle button and the housing, so that the second toggle button can be positioned in a third position for locking the second pawl and a fourth position for unlocking the second pawl through the second positioning component.

9. The telescopic buckle with switchable usage states according to claim 8, characterized in that, The first positioning component includes a first positioning bead and a first spring. A first receiving groove is formed on the outer side of the housing. The first positioning bead is partially received within the first receiving groove. The first spring abuts against the inner wall of the first receiving groove. The first toggle key has two first positioning holes spaced apart along its sliding direction, so that the first toggle key can be positioned at a first position and a second position respectively by the first positioning bead being received in the two first positioning holes; and / or The second positioning component includes a second positioning bead and a second spring. A second receiving groove is provided on the outer side of the housing. The second positioning bead is partially received in the second receiving groove. The second spring abuts against the inner wall of the second receiving groove. The second toggle key is provided with two second positioning holes at intervals along its sliding direction, so that the second toggle key can be positioned in the third position and the fourth position respectively by the second positioning bead being received in the two second positioning holes respectively.

10. The telescopic buckle with switchable usage state according to any one of claims 1 to 4, characterized in that, The gear is a gear ring structure, with multiple teeth evenly arranged on its inner circumference. The first and second pawls are both located on the inner ring of the gear. A receiving space is provided on the other side of the take-up reel, and a shaft is provided inside the housing. The take-up reel is sleeved on the shaft. The coil spring is housed within the receiving space, with one end of the coil spring secured to the inner wall of the receiving space and the other end secured to the shaft; and / or The bottom of the housing has a through-groove extending along its width, and one end of the telescopic rope passes through the through-groove and is connected to a connector.

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