Lock catch

Abstract

The utility model discloses a lock catch which comprises a first fastener, a second fastener and a lock ring. The first fastener is of a C-shaped structure and comprises a connecting end and a clamping end; one end of the second fastener is rotatably connected to the connecting end, and the other end of the second fastener can be clamped with the clamping end; the clamping end is movably sleeved with the locking ring, and the locking ring can move to the joint of the second fastener and the clamping end so as to limit rotation of the second fastener clamped to the clamping end. When the lock catch is used, the second fastener is rotated to open and close the lock catch, so that the lock catch forms a closed annular structure, and then the lock ring can be moved to the joint of the second fastener and the first fastener, so that the second fastener cannot rotate due to the limitation of the lock ring, and the safety of the lock catch is improved; therefore, the safety buckle is simple in structure, convenient to use and capable of effectively achieving the protection effect of safe buckling.

Description

Technical Field

[0001] The utility model relates to the technical field of lock buckles, in particular to a lock buckle. Background Art

[0002] Locking mechanisms are widely used in various fields, from everyday consumer goods to industrial manufacturing and high-end fields such as aerospace. Locking mechanisms have become indispensable due to their ability to provide fast and reliable connection and fixation. However, existing locking mechanisms often have limitations, such as complex installation, high cost, large size, and complicated operation. These issues have, to a certain extent, limited the scope and efficiency of locking mechanisms.

[0003] Therefore, how to provide a lock that is simple in structure, easy to use, and has a protective effect of secure buckling is a technical problem that those skilled in the art currently need to solve. Utility Model Content

[0004] The utility model aims to provide a lock buckle which has a simple structure, is easy to use and has a protective effect of safe buckling.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A lock buckle, comprising:

[0007] The first fastener has a C-shaped structure and includes a connecting end and a locking end;

[0008] A second fastener, one end of which is rotatably connected to the connecting end, and the other end of the second fastener is capable of being engaged with the engaging end;

[0009] The locking ring is movably sleeved on the engaging end, and the locking ring can be moved to the connection between the second fastener and the engaging end to limit the rotation of the second fastener engaged with the engaging end.

[0010] Preferably, a positioning groove is provided at the engaging end, a return spring is installed in the positioning groove, a first pin is passed through the side wall of the locking ring close to the positioning groove, and the first pin abuts against one end of the return spring, and the return spring moves close to the connecting end.

[0011] Preferably, a positioning column for fixing the reset spring is provided on the inner side wall of the positioning groove in a direction away from the engaging end, and the positioning column is inserted into an end of the reset spring away from the first pin shaft.

[0012] Preferably, a first limiting protrusion is provided at the end of the engaging end, and a second limiting protrusion that engages with the first limiting protrusion is provided at the end of the second fastener away from the connecting end.

[0013] Preferably, a U-shaped groove is provided at the end of the second fastener facing away from the second limiting protrusion, and the connecting end is located in the U-shaped groove.

[0014] Preferably, the first fastener and the second fastener are rotatably connected via a second pin shaft, a retaining spring is sleeved on the circumference of the second pin shaft, a first limiting portion is provided in the U-shaped groove, and a second limiting portion is provided at the connecting end, and the first limiting portion and the second limiting portion respectively abut against the two ends of the retaining spring, so that the second fastener tends to rotate toward the engaging end.

[0015] Preferably, a blocking portion is provided at the connecting end, and the blocking portion is located between the first pin shaft and the retaining spring to reduce wear on the retaining spring.

[0016] Preferably, a limiting step is provided in the U-shaped groove for limiting the rotation of the second fastener.

[0017] Preferably, the cross-sectional shape of the first fastener and the second fastener is the same as the cross-sectional shape of the through hole inside the lock ring.

[0018] Preferably, the first fastener and the second fastener are made of metal, and the lock ring is integrally formed by injection molding.

[0019] Compared with the above-mentioned background technology, the lock provided by the present invention includes: a first fastener, a second fastener and a locking ring; the first fastener has a C-shaped structure, including a connecting end and a clamping end; the second fastener has one end rotatably connected to the connecting end, and the other end of the second fastener can be clamped with the clamping end; the locking ring is movably mounted on the clamping end, and the locking ring can be moved to the connection between the second fastener and the clamping end to limit the rotation of the second fastener clamped to the clamping end.

[0020] Specifically, the present invention increases the safety of the lock buckle by providing a movable locking ring. When in use, the second fastener is rotated to open the opening of the first fastener so that it is connected to the target rope ring. Then the second fastener is rotated so that the second fastener is engaged with the first fastener to form a closed ring structure. The locking ring can then be moved to the connection between the second fastener and the first fastener. In this way, due to the restriction of the locking ring, the second fastener will not be able to rotate, thereby improving the safety of the lock buckle. In this way, the present invention has a simple structure, is easy to use, and can also effectively provide a protective effect of safe fastening. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0022] Figure 1A schematic diagram of the lock structure provided by an embodiment of the present utility model;

[0023] Figure 2 A schematic diagram of the locking state structure of the lock provided by an embodiment of the present utility model;

[0024] Figure 3 This is a schematic diagram of the lock in unlocked state provided by an embodiment of the present utility model;

[0025] Figure 4 An exploded view of the lock structure provided by an embodiment of the present utility model;

[0026] Figure 5 A partial cross-sectional view of a lock provided in an embodiment of the present utility model.

[0027] in:

[0028] 100 - first fastener, 110 - connecting end, 111 - second limiting portion, 112 - blocking portion, 120 - engaging end, 121 - positioning groove, 122 - return spring, 123 - positioning column, 124 - first limiting protrusion;

[0029] 200 - second fastener, 210 - second limiting protrusion, 220 - U-shaped groove, 221 - first limiting portion, 222 - limiting step, 230 - second pin shaft;

[0030] 300-locking ring, 310-first pin;

[0031] 400-circlip. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0034] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left" and "right" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the positions or elements referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limitations of the present invention.

[0035] The utility model aims to provide a lock buckle which has a simple structure, is easy to use and has a protective effect of safe buckling.

[0036] To achieve the above objectives, the present invention provides the following technical solutions:

[0037] See also Figures 1 to 5 , this embodiment provides a lock, including: a first fastener 100, a second fastener 200 and a locking ring 300; the first fastener 100 has a C-shaped structure, including a connecting end 110 and a locking end 120; the second fastener 200, one end of which is rotatably connected to the connecting end 110, and the other end of the second fastener 200 can be locked with the locking end 120; the locking ring 300 is movably mounted on the locking end 120, and the locking ring 300 can be moved to the connection between the second fastener 200 and the locking end 120 to limit the rotation of the second fastener 200 locked with the locking end 120.

[0038] In this embodiment, the first fastener 100 is a C-shaped structure as a whole, that is, a ring structure with a notch. The two ends of the first fastener 100 are respectively a connecting end 110 and a snap-fit ​​end 120, wherein the connecting end 110 is used to connect with the second fastener 200. The second fastener 200 is a rod-shaped structure, one end of which is rotatably connected to the connecting end 110 of the first fastener 100, and the other end can be snapped with the snap-fit ​​end 120 of the first fastener 100, so that the lock can be opened and closed.

[0039] Furthermore, in order to prevent the lock from being accidentally opened during use and causing a safety accident, this embodiment is provided with a movable lock ring 300 on the outer periphery of the locking end 120. When the lock is in a closed state, the lock ring 300 can be moved to the locking point between the second fastener 200 and the locking end 120, that is, the lock ring 300 is simultaneously mounted on the outer periphery of both. In this way, even if an external force acts on the second fastener 200, the second fastener 200 cannot rotate, and the lock cannot be opened. When the lock needs to be opened, it is only necessary to push the lock ring 300 back to the outer periphery of the locking end 120, and then press the second fastener 200 again to complete the opening of the lock. This arrangement can greatly improve the safety of the lock during use.

[0040] That is to say, the present invention increases the safety of the lock buckle by providing a movable locking ring 300. When in use, the second fastener 200 is rotated to open the opening of the first fastener 100 so that it is connected to the target rope ring. Then the second fastener 200 is rotated so that the second fastener 200 is engaged with the first fastener 100 to form a closed ring structure. The locking ring 300 can then be moved to the connection between the second fastener 200 and the first fastener 100. In this way, due to the restriction of the locking ring 300, the second fastener 200 will not be able to rotate, thereby improving the safety of the lock buckle. In this way, the present invention has a simple structure, is easy to use, and can also effectively provide a protective effect of safe fastening.

[0041] Furthermore, the locking end 120 is provided with a positioning groove 121, and a return spring 122 is installed in the positioning groove 121. A first pin shaft 310 is passed through the side wall of the locking ring 300 close to the positioning groove 121, and the first pin shaft 310 abuts against one end of the return spring 122, and the return spring 122 moves close to the connecting end 110.

[0042] In this embodiment, in order to increase the safety of the lock, the lock ring 300 can move back toward the connecting end 110 each time the external force is removed. A square positioning groove 121 is dug in the upper end surface of the engaging end 120, and a return spring 122 is installed inside the positioning groove 121. At the same time, a through hole is provided on the upper side wall of the lock ring 300, and a first pin shaft 310 is vertically penetrated inside the through hole. The first pin shaft 310 extends downward and extends into the positioning groove 121, and the first pin shaft 310 also abuts against one end of the return spring 122. Specifically, as shown in FIG. Figure 4 and Figure 5 As shown, the return spring 122 is horizontally installed inside the positioning groove 121, and its right end abuts against the inner wall of the positioning groove 121, and the first pin shaft 310 passes through the locking ring 300 and abuts against the left end of the return spring 122. In this way, when the locking ring 300 moves to the right, it will also drive the first pin shaft 310 to move, and the first pin shaft 310 will compress the return spring 122 to the right. At this time, the return spring 122 will accumulate elastic potential energy. When the external force is removed, the return spring 122 releases the elastic force, driving the first pin shaft 310 and the locking ring 300 to move to the left, so that the locking ring 300 can automatically lock the first fastener 100 and the second fastener 200.

[0043] It should be noted that in order to ensure that the locking ring 300 can lock the second fastener 200 and the engaging end 120, when setting the position of the positioning groove 121, it is first necessary to ensure that in the absence of external force, the first pin shaft 310 will be pressed to the leftmost end by the return spring 122, and it is also necessary to ensure that the position of the locking ring 300 is exactly at the connection between the second fastener 200 and the engaging end 120.

[0044] Furthermore, a positioning column 123 for fixing the return spring 122 is provided on the inner side wall of the positioning groove 121 in a direction away from the engaging end 120 . The positioning column 123 is inserted into an end of the return spring 122 away from the first pin shaft 310 .

[0045] Specific as Figure 4 As shown, a protruding positioning column 123 is provided on the rightmost inner wall of the positioning groove 121. When installing the return spring 122, the right end of the return spring 122 can be sleeved on the outer circumference of the positioning column 123 to prevent the return spring 122 from popping out of the positioning groove 121 when being compressed.

[0046] In this embodiment, a first limiting protrusion 124 is provided at the end of the engaging end 120 , and a second limiting protrusion 210 engaging with the first limiting protrusion 124 is provided at the end of the second fastener 200 away from the connecting end 110 .

[0047] Specific as Figure 3 As shown, in this embodiment, in order to facilitate the use of the lock, the second fastener 200 will rotate inside the first fastener 100, and in order to prevent the second fastener 200 from rotating outward, a first limiting protrusion 124 is provided on the outside of the end of the engaging end 120, and at the same time, a second limiting protrusion 210 is provided on the inner side of the free end of the second fastener 200. When the second fastener 200 rotates outward, the second fastener 200 will not be able to continue to rotate until the second limiting protrusion 210 abuts against the first limiting protrusion 124. At this time, the lock is closed, and then the locking ring 300 will automatically move toward the connecting end 110, and be sleeved on the outer periphery of the first limiting protrusion 124 and the second limiting protrusion 210, thereby completing the locking of the lock.

[0048] Preferably, a U-shaped groove 220 is provided at the end of the second fastener 200 away from the second limiting protrusion 210 , and the connecting end 110 is located in the U-shaped groove 220 .

[0049] In this embodiment, if Figure 4 and Figure 5 As shown, in order to make the connection between the first fastener 100 and the second fastener 200 more beautiful and more integrated, a U-shaped groove 220 is provided in the middle of the end of the second fastener 200 away from the second limiting protrusion 210, and correspondingly, the connecting end 110 of the first fastener 100 is provided with a flat shape so that it can be embedded in the U-shaped groove 220.

[0050] Furthermore, the first fastener 100 and the second fastener 200 are rotatably connected through the second pin shaft 230, and a retaining spring 400 is sleeved on the circumference of the second pin shaft 230. A first limiting portion 221 is provided in the U-shaped groove 220, and a second limiting portion 111 is provided at the connecting end 110. The first limiting portion 221 and the second limiting portion 111 are respectively abutted against the two ends of the retaining spring 400, so that the second fastener 200 has a tendency to rotate toward the engaging end 120.

[0051] Specific as Figure 4 and Figure 5 As shown, after the first fastener 100 and the second fastener 200 are installed to corresponding positions, a second pin shaft 230 is vertically passed through the overlapping position of the U-shaped groove 220 and the connecting end 110, thereby completing the rotational connection between the second fastener 200 and the first fastener 100. Of course, the connection method of the second fastener 200 can also be selected according to actual conditions, and this article does not make specific restrictions; in addition, in order to enable the lock to automatically engage after pressing and ensure stability after engagement, in this embodiment, a retaining spring 400 is sleeved on the second pin shaft 230, and the two end legs of the retaining spring 400 are engaged with the first limiting portion 221 of the U-shaped groove 220, and the other end legs are engaged with the second limiting portion 111 of the connecting end 110, and the retaining spring 400 in this embodiment always has the tendency to make the second fastener 200 rotate outward. In this way, in the absence of external force, the second fastener 200 will rotate outward until the first limiting protrusion 124 abuts against the second limiting protrusion 210. Even if the lock needs to be opened and closed, the lock can be automatically closed, which greatly improves the convenience of using the lock.

[0052] Preferably, the connection end 110 is provided with a blocking portion 112 , and the blocking portion 112 is located between the first pin shaft 310 and the retaining spring 400 to reduce wear on the retaining spring 400 .

[0053] Specific as Figure 4 As shown, a blocking portion 112 with an annular structure having an opening is provided on the upper side of the plane of the connecting end 110 located in the U-shaped groove 220. The setting of the blocking portion 112 first facilitates the positioning of the second pin shaft 230 and facilitates the assembly of the lock. Secondly, the blocking portion 112 is located between the retaining spring 400 and the first pin shaft 310, which can effectively prevent serious wear between the retaining spring 400 and the first pin shaft 310. Finally, the outer diameter of the blocking portion 112 is matched with the inner diameter of the retaining spring 400 in this embodiment, so that the retaining spring 400 is limited by the blocking portion 112 to prevent the retaining spring 400 from shaking at will.

[0054] Preferably, a limiting step 222 is further provided in the U-shaped groove 220 for limiting the rotation of the second fastener 200 .

[0055] like Figure 4As shown, it can be understood that in order to make the connection integrity between the U-shaped groove 220 and the connecting end 110 better, a limiting step 222 is provided on the basis of the first limiting portion 221. The step surface will fit the end face of the connecting end 110, and the step surface will limit the outward rotation of the second fastener 200, so that it can only rotate to a maximum level with the connecting end 110 of the first fastener 100.

[0056] Preferably, the cross-sectional shape of the first fastener 100 and the second fastener 200 is the same as the cross-sectional shape of the internal through hole of the locking ring 300 .

[0057] In this embodiment, the cross-sections of the first fastener 100 and the second fastener 200 are both quadrilaterals with rounded corners, and the cross-sectional dimensions of the two are exactly the same. Therefore, the through hole in the locking ring 300 in this embodiment is also set to be a quadrilateral with rounded corners, and its size is slightly larger than the cross-sectional dimensions of the first fastener 100 and the second fastener 200, so as to ensure that the locking ring 300 can move on the first fastener 100 and the second fastener 200, and also ensure that the locking ring 300 will not shake arbitrarily during the movement.

[0058] Preferably, the first fastener 100 and the second fastener 200 are made of metal, and the lock ring 300 is integrally formed by injection molding.

[0059] In this embodiment, the first fastener 100 and the second fastener 200 are preferably made of metal to increase the service life of the lock and ensure the overall strength of the lock. The force borne by the lock ring 300 is relatively small. Therefore, in order to reduce the production cost and difficulty of the lock, the lock ring 300 is formed by injection molding.

[0060] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0061] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0062] The above is a detailed introduction to the embodiments provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only intended to help understand the method and core concept of the present invention. It should be noted that, for those skilled in the art, without departing from the principles of the present invention, various improvements and modifications may be made to the present invention, and such improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. A lock buckle, characterized in that: include: A first fastener (100) has a C-shaped structure and includes a connecting end (110) and a locking end (120); A second fastener (200), one end of which is rotatably connected to the connecting end (110), and the other end of the second fastener (200) is capable of being engaged with the engaging end (120); A locking ring (300) is movably mounted on the engaging end (120), and the locking ring (300) can be moved to the connection between the second fastener (200) and the engaging end (120) to limit the rotation of the second fastener (200) engaged with the engaging end (120).

2. The lock buckle according to claim 1, characterized in that: The engaging end (120) is provided with a positioning groove (121), a return spring (122) is installed in the positioning groove (121), a first pin (310) is passed through the side wall of the locking ring (300) close to the positioning groove (121), and the first pin (310) abuts against one end of the return spring (122), and the return spring (122) drives the first pin (310) to move close to the connecting end (110).

3. The lock buckle according to claim 2, characterized in that: A positioning column (123) for fixing the return spring (122) is provided on the inner side wall of the positioning groove (121) in a direction away from the engaging end (120), and the positioning column (123) is inserted into an end of the return spring (122) away from the first pin shaft (310).

4. The lock buckle according to claim 3, characterized in that: The end of the engaging end (120) is provided with a first limiting protrusion (124), and the end of the second fastener (200) facing away from the connecting end (110) is provided with a second limiting protrusion (210) that is engaged with the first limiting protrusion (124).

5. The lock buckle according to claim 4, characterized in that: The end of the second fastener (200) facing away from the second limiting protrusion (210) is provided with a U-shaped groove (220), and the connecting end (110) is located in the U-shaped groove (220).

6. The lock buckle according to claim 5, characterized in that: The first fastener (100) and the second fastener (200) are rotatably connected via a second pin shaft (230); a retaining spring (400) is sleeved on the circumference of the second pin shaft (230); a first limiting portion (221) is provided in the U-shaped groove (220); a second limiting portion (111) is provided at the connecting end (110); the first limiting portion (221) and the second limiting portion (111) respectively abut against the two ends of the retaining spring (400), so that the second fastener (200) tends to rotate toward the engaging end (120).

7. The lock buckle according to claim 6, characterized in that: The connection end (110) is provided with a blocking portion (112), and the blocking portion (112) is located between the first pin shaft (310) and the clamping spring (400) to reduce wear on the clamping spring (400).

8. The lock buckle according to claim 7, characterized in that: A limiting step (222) for limiting the rotation of the second fastener (200) is also provided in the U-shaped groove (220).

9. The lock buckle according to claim 1, characterized in that: The cross-sectional shape of the first fastener (100) and the second fastener (200) is the same as the cross-sectional shape of the internal through hole of the locking ring (300).

10. The lock buckle according to claim 1, characterized in that: The first fastener (100) and the second fastener (200) are specifically made of metal, and the lock ring (300) is integrally formed by injection molding.

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