Lock catch

Abstract

The embodiment of the utility model discloses a lock catch which has a locking state and an unlocking state and comprises a female buckle, a clamping assembly and a male buckle, the female buckle is provided with a containing cavity and a groove, and the groove is located in the cavity wall of the containing cavity; the clamping assembly is telescopically arranged in the groove; the male buckle comprises a locking piece and an unlocking piece, the unlocking piece is arranged on the locking piece, and the locking piece and the unlocking piece can relatively move in the axial direction of the male buckle; the lock catch piece is used for stretching into the containing cavity to be connected with the clamping assembly stretching into the containing cavity from the groove in a clamped mode, so that the lock catch is in a locked state. The unlocking piece is used for stretching into the containing cavity to make contact with the clamping assembly and making the clamping assembly contract into the groove from the containing cavity so that the lock catch can be in an unlocked state. The lock catch is convenient to unlock and miniaturized.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to a fastener. Background Art

[0002] A fastener is generally an object used to fasten two items, and it is widely used in the fields of clothing, luggage, electronic products, etc. In these fields, the use of fasteners brings convenience to people's lives. A magnetic fastener is a type of fastener that includes a male fastener and a female fastener, and the male fastener and the female fastener are tightly attracted by magnetism. In the related art, in order to open the tightly attracted magnetic fastener, it is necessary to additionally provide a pressing and unlocking structure on the outside of the fastener, and the fastener is unlocked by pressing the pressing and unlocking structure. The arrangement of the pressing and unlocking structure on the outside of the fastener makes the overall volume of the fastener relatively large, resulting in limitations in its later installation design. Summary of the Utility Model

[0003] The technical problem to be solved by the embodiments of the utility model is that the volume of the fastener is relatively large and it needs to be unlocked by pressing an external pressing and unlocking structure.

[0004] To solve the above problems, the embodiments of the utility model provide a fastener, which can be miniaturized, making the later installation design relatively simple.

[0005] The utility model provides a fastener, which has a locked state and an unlocked state, and includes:

[0006] A female fastener, having a receiving cavity and a groove, and the groove is located on the cavity wall of the receiving cavity;

[0007] A clamping component, telescopically arranged in the groove;

[0008] A male fastener, including a locking member and an unlocking member, the unlocking member is arranged on the locking member, and the locking member and the unlocking member can move relative to each other along the axial direction of the male fastener;

[0009] Wherein, the locking member is used to extend into the receiving cavity and be clamped with the clamping component extending into the receiving cavity from the groove, so that the fastener is in the locked state; the unlocking member is used to extend into the receiving cavity and contact the clamping component, and make the clamping component contract from the receiving cavity into the groove, so that the fastener is in the unlocked state.

[0010] In a possible implementation manner, the clamping component includes:

[0011] An elastic member, located in the groove;

[0012] A clamping member is movably disposed in the groove, and the clamping member has a first end and a second end connected to each other, the first end being connected to the elastic member; the second end is used to extend from the groove into the accommodating cavity and clamp with the locking member, or to be retracted into the groove under the push of the unlocking member.

[0013] In a possible implementation manner, the first end portion has a connecting groove, and the elastic member extends into the connecting groove and is connected to the clamping member.

[0014] In one possible embodiment, the second end portion has a snap-fit surface and a sloped surface, the snap-fit surface and the sloped surface are connected, the snap-fit surface is used to snap-fit with the locking member and is parallel to the contact surface of the locking member; the sloped surface is used to contact the unlocking member, and the sloped surface gradually increases its distance from the axial center of the male buckle along the direction from the locking member to the unlocking member.

[0015] In a possible embodiment, the female buckle includes a first main body and a first protrusion that are connected to each other, the accommodating cavity and the groove are located in the first main body, and the first protrusion protrudes from a side of the first main body away from the accommodating cavity.

[0016] In a possible embodiment, the locking member includes a locking portion, a second main body portion, and a second protrusion connected in sequence, and the second main body portion is connected between the locking portion and the second protrusion; the locking portion is arranged in the accommodating cavity and is used to engage with the snap-fit assembly; the unlocking member is movably arranged on the second main body portion; the second protrusion is movably inserted into the accommodating cavity, and at least a portion of the second protrusion extends out of the accommodating cavity.

[0017] In a possible implementation manner, the unlocking member is movably sleeved on the second main body portion, and an outer peripheral wall of the unlocking member is an inclined surface.

[0018] In a possible embodiment, the outer diameter d1 of the unlocking member, the outer diameter d2 of the locking portion, and the inner diameter d3 of the accommodating cavity satisfy the following conditions: <d1≤d3。

[0019] In a possible implementation, the lock further includes:

[0020] A first magnetic member is disposed in the accommodating cavity and connected to a cavity wall of the accommodating cavity;

[0021] The second magnetic component is provided on the locking component, and the magnetism of the second magnetic component is opposite to that of the first magnetic component.

[0022] In a possible implementation manner, the first magnetic component is elastically connected to the cavity wall of the accommodating cavity.

[0023] Compared with the prior art, the technical effects that can be achieved by the embodiments of the present utility model include:

[0024] The buckle provided by the present utility model has a locked state and an unlocked state. The buckle includes a female buckle, a clamping component, and a male buckle. The female buckle has a receiving cavity and a groove, and the groove is located on the cavity wall of the receiving cavity; the clamping component is telescopically arranged in the groove; the male buckle includes a locking member and an unlocking member, the unlocking member is arranged on the locking member, and the locking member and the unlocking member can move relative to each other along the axial direction of the male buckle; wherein, the locking member is used to extend into the receiving cavity and be clamped with the clamping component extending from the groove into the receiving cavity, so that the buckle is in the locked state; the unlocking member is used to extend into the receiving cavity and contact the clamping component, and make the clamping component contract from the receiving cavity into the groove, so that the buckle is in the unlocked state. In the above technical solution, the unlocking member is arranged on the locking member, and the locking member and the unlocking member can move relative to each other along the axial direction of the male buckle, so that the space of the receiving cavity of the female buckle can be effectively utilized to integrate the unlocking member on the male buckle, and when unlocking is required, only one of the male buckle or the female buckle needs to be pressed, so that the male buckle or the female buckle generates relative movement. At this time, the locking member is driven to push the clamping component to contract into the groove to complete unlocking, that is, the present utility model can realize the convenient switching of the buckle between the locked state and the unlocked state, and can be unlocked without additionally setting a pressing and unlocking structure, which is beneficial to the miniaturization of the buckle to simplify the later installation design of the buckle. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present utility model, and are used together with the specification to explain the principles of the present utility model.

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings. These exemplary illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, unless otherwise stated, and the drawings in the drawings do not constitute a proportional limitation.

[0028] Figure 1 Shows a schematic cross-sectional structure diagram of the buckle provided by the embodiment of the present utility model when in the locked state;

[0029] Figure 2shows Figure 1 Schematic cross-sectional structure diagram after the male buckle is hidden;

[0030] Figure 3 Schematic cross-sectional structure diagram of the buckle provided by the embodiment of the present invention when it is in the unlocked state.

[0031] Reference numerals

[0032] 10 - Buckle;

[0033] 100 - Female buckle;

[0034] 110 - Accommodating cavity;

[0035] 120 - Groove;

[0036] 130 - First main body part;

[0037] 140 - First protruding part;

[0038] 200 - Clamping component;

[0039] 210 - Elastic member;

[0040] 220 - Clamping part;

[0041] 221 - First end part;

[0042] 2211 - Connection groove;

[0043] 222 - Second end part;

[0044] 2221 - Clamping surface;

[0045] 2222 - Inclined surface;

[0046] 300 - Male buckle;

[0047] 310 - Locking part;

[0048] 311 - Locking portion;

[0049] 312 - Second main body part;

[0050] 313 - Second protruding part;

[0051] 320 - Unlocking part;

[0052] 400 - First magnetic member;

[0053] 500 - Second magnetic member. Specific implementation manner

[0054] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Similar component numbers in the drawings represent similar components. Obviously, the embodiments to be described below are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0055] It should be understood that when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0056] It should also be understood that the terms used in the specification of the embodiments of the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present utility model. As used in the specification of the embodiments of the present utility model and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are intended to include the plural forms.

[0057] Please refer to Figures 1-3 As shown, the present utility model provides a buckle, the buckle 10 has a locked state and an unlocked state, and includes a female buckle 100, a clamping component 200, and a male buckle 300. The female buckle 100 has a receiving cavity 110 and a groove 120, and the groove 120 is located on the cavity wall of the receiving cavity 110; the clamping component 200 is telescopically arranged in the groove 120; the male buckle 300 includes a locking member 310 and an unlocking member 320, the unlocking member 320 is arranged on the locking member 310, and the locking member 310 and the unlocking member 320 can move relative to each other along the axial direction of the male buckle 300; wherein, the locking member 310 is used to extend into the receiving cavity 110 and be clamped with the clamping component 200 extending from the groove 120 into the receiving cavity 110, so that the buckle 10 is in the locked state; the unlocking member 320 is used to extend into the receiving cavity 110 and contact the clamping component 200, and make the clamping component 200 contract from the receiving cavity 110 into the groove 120, so that the buckle 10 is in the unlocked state.

[0058] In the buckle 10 provided by the present utility model, the locking member 310 of the male buckle 300 extends into the receiving cavity 110 and contacts the clamping assembly 200 to squeeze the clamping assembly 200 to retract into the groove 120. As the locking member 310 continues to extend into the receiving cavity 110 and disengages from the clamping assembly 200, the clamping assembly 200 extends into the receiving cavity 110 again to clamp the locking member 310, thereby restricting the male buckle 300 from falling out of the receiving cavity 110 of the female buckle 100. At this time, the buckle 10 is in the locked state. When an axial external force is applied to the male buckle 300 and / or the female buckle 100, relative movement occurs between the male buckle 300 and the female buckle 100, and the unlocking member 320 can contact the clamping assembly 200 to squeeze the clamping assembly 200 to retract into the groove 120 and then abut against the clamping assembly 200. At this time, the locking member 310 and the unlocking member 320 can move relative to each other along the axial direction of the male buckle 300, so that the male buckle 300 can be withdrawn from the receiving cavity 110 of the female buckle 100, and the buckle 10 is switched from the locked state to the unlocked state.

[0059] Therefore, in the buckle 10 provided by the present utility model, by arranging the unlocking member 320 on the locking member 310 and enabling the locking member 310 and the unlocking member 320 to move relative to each other along the axial direction of the male buckle 300, the space of the receiving cavity 110 of the female buckle 100 can be effectively utilized to integrate the unlocking member 320 on the male buckle 300. While facilitating the switching of the buckle 10 between the locked state and the unlocked state, it is also beneficial to the miniaturization of the buckle 10 to simplify the later installation design of the buckle 10.

[0060] In the buckle provided by the present utility model, the clamping assembly 200 is telescopically arranged in the groove 120, enabling the buckle 10 to be switched between the locked state and the unlocked state. Therefore, by optimizing the structure and / or material of the clamping assembly 200, the clamping assembly 200 can be simplified, and the manufacturing cost of the buckle 10 can be reduced.

[0061] Please refer to Figure 2As shown, in some embodiments, the snap - fit component 200 includes an elastic member 210 and a snap - fit member 220. The elastic member 210 is located within the groove 120, and the snap - fit member 220 is movably disposed within the groove 120. The snap - fit member 220 has a first end 221 and a second end 222 that are connected to each other. The first end 221 is connected to the elastic member 210, and the second end 222 is used to extend from the groove 120 into the receiving cavity 110 to engage with the locking member 310. The elastic member 210 is located within the groove 120 and is connected to the first end 221 of the snap - fit member 220. When the snap - fit member 220 is squeezed, the snap - fit member 220 will compress the elastic member 210 and then shrink into the groove 120; when the snap - fit member 220 is not squeezed, the elastic member 210 will return to its original shape and then push the snap - fit member 220 from the groove 120 into the receiving cavity 110. Through the arrangement of the elastic member 210 and the snap - fit member 220, the structure of the snap - fit component 200 can be simplified, making it reliable in use and convenient for maintenance.

[0062] In the above - mentioned embodiment, the structure of the snap - fit member 220 can be further optimized to improve its use stability and unlocking efficiency.

[0063] Please continue to refer to Figure 2 As shown, in some embodiments, the first end 221 has a connection groove 2211, and the elastic member 210 extends into the connection groove 2211 to be connected to the snap - fit member 220. The setting of the connection groove 2211 makes the connection between the elastic member 210 and the snap - fit member 220 more reliable, and thus more stable during the telescopic process.

[0064] Please also continue to refer to Figure 2 As shown, in some embodiments, the second end 222 has a latching surface 2221 and an inclined surface 2222. The latching surface 2221 and the inclined surface 2222 are connected. The latching surface 2221 is used to engage with the locking member 310 and is parallel to the contact surface of the locking member 310. The inclined surface 2222 is used to contact the unlocking member 320, and the distance from the axis of the male buckle 300 of the inclined surface 2222 gradually increases along the direction from the locking member 310 to the unlocking member 320. The parallel setting of the latching surface 2221 and the contact surface of the locking member 310 and the setting of the inclined surface 2222 can further improve the unlocking efficiency.

[0065] In the lock provided by the present utility model, the number of the snap - fit components 200 can be selected according to actual application requirements, such as more than 2 snap - fit components 200.

[0066] In some embodiments, the lock 10 may include 2 snap - fit components 200, and the female buckle 100 has 2 grooves 120. The 2 grooves 120 are oppositely arranged on the cavity wall of the receiving cavity 110, and one snap - fit component 200 is correspondingly arranged in each groove 120. This can further improve the snap - fit stability and contribute to enhancing the reliability of the lock in the locked state.

[0067] In other embodiments, the lock buckle 10 may also include three snap-fit components 200, and the female buckle 100 has three grooves 120, with a corresponding snap-fit component 200 being arranged in each groove 120, wherein the distance between adjacent grooves 120 may be equal or unequal.

[0068] In the above embodiments, the elastic member 210 can be any elastic and recoverable part known in the art, such as a spring. The size of the clip 220 can be adapted to the size of the groove 120, thereby reducing shaking during the extension and retraction process and further improving its reliability.

[0069] In the lock buckle provided by the present invention, the structures of the female buckle 100 and the male buckle 300 can be optimized to make their switching between the locked state and the unlocked state easier.

[0070] See also Figure 3 As shown, in some embodiments, the female snap 100 includes a first main body 130 and a first protrusion 140 connected to each other, with the accommodating cavity 110 and the recess 120 located in the first main body 130. The first protrusion 140 protrudes from the side of the first main body 130 facing away from the accommodating cavity 110. By pressing or pushing the first protrusion 140, the first main body 130 and the male snap 300 can be switched between a locked state and an unlocked state more easily.

[0071] Please continue reading Figure 3 As shown, in some embodiments, the locking member 310 includes a locking portion 311, a second main portion 312, and a second protrusion 313, which are connected in sequence. The second main portion 312 is connected between the locking portion 311 and the second protrusion 313. The locking portion 311 is disposed within the accommodating cavity 110 and is configured to engage with the snap assembly 200. The unlocking member 320 is disposed on the second main portion 312. The second protrusion 313 is movably inserted into the accommodating cavity 1100, with at least a portion of the second protrusion 313 extending outside the accommodating cavity 1100. By pressing or pushing the second protrusion 313, the locking portion 311, the unlocking member 320, and the female snap 100 can be easily switched between a locked and unlocked state.

[0072] In the above - mentioned embodiment, one end of the second main body portion 312 away from the second protruding portion 313 can extend outward along its circumference to form a locking portion 311. In this way, the second main body portion 312 and the locking portion 311 can be integrally formed, improving the structural strength of the locking member 310. In addition, the locking portion 311 has a contact surface that abuts against the clamping surface 2221, and a mating groove is formed by inward depression of the surface of the contact surface close to the second main body portion 312. And the unlocking member 320 has a protruding portion that mates with the mating groove. This can help the locking member 310 and the unlocking member 320 to be withdrawn from the receiving cavity 110 together, further improving the unlocking efficiency.

[0073] In some embodiments, the unlocking member 320 is movably sleeved on the second main body portion 312, and the outer peripheral wall of the unlocking member 320 is an inclined surface. The unlocking member 320 is arranged to move along the axial direction of the second main body portion 312. It can be understood that the unlocking member 320 is sleeved on the second main body portion 312, that is, there is a clearance fit between the unlocking member 320 and the second main body portion 312. During the unlocking process, by pushing either the male buckle 300 or the female buckle 100, the unlocking member 320 can be made to squeeze the clamping assembly 200 to retract into the groove 120 and abut against the clamping assembly 200. At this time, the second end portion of the clamping member abuts against a position above the inclined surface of the unlocking member 320. At this time, by pushing the female buckle 100 in the outward direction of the receiving cavity 110, the locking portion 311 can drive the unlocking member 320 to disengage from the receiving cavity 110 to achieve unlocking.

[0074] In some embodiments, the outer diameter d1 of the unlocking member 320, the outer diameter d2 of the locking portion 311, and the inner diameter d3 of the receiving cavity 110 satisfy: d2 < d1 ≤ d3. This can be conducive to improving the unlocking efficiency. Among them, the outer diameter d2 of the locking portion 311 refers to the maximum radial dimension of the locking portion 311.

[0075] Please continue to refer to Figure 3 As shown, in some embodiments, the lock 10 further includes a first magnetic member 400 and a second magnetic member 500. The first magnetic member 400 is disposed in the receiving cavity 110 and is connected to the cavity wall of the receiving cavity 110; the second magnetic member 500 is disposed on the locking member 310, and the magnetism of the second magnetic member 500 is opposite to that of the first magnetic member 400. Through the arrangement of the first magnetic member 400 and the second magnetic member 500, the reliability of the lock 10 in the locked state can be further improved, and it can also withstand a considerable tensile force.

[0076] In the above - mentioned embodiment, the first magnetic member 400 can be a permanent magnet (usually a neodymium - iron - boron magnet), and the second magnetic member 500 can be a soft magnet. Among them, the permanent magnet has extremely strong magnetism, and the soft magnet has certain elasticity and plasticity.

[0077] In some embodiments, the first magnetic member 400 is elastically connected to the cavity wall of the accommodation cavity 110. The elastic connection between the first magnetic member 400 and the cavity wall of the accommodation cavity 110 can help maintain the stability of the magnetic force of the first magnetic member 400.

[0078] In the above embodiments, the descriptions of the various embodiments have their own emphases. For the parts not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0079] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0080] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more, unless otherwise specifically defined.

[0081] In the present invention, unless otherwise clearly defined and limited, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0082] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0083] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0084] Obviously, those skilled in the art can make various changes and modifications to the present utility model without departing from the spirit and scope of the present utility model. Thus, provided that these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and their equivalent technologies, the present utility model also intends to include these changes and modifications therein.

[0085] As described above, this is the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A buckle, characterized in that, The lock buckle has a locked state and an unlocked state, including: A female buckle having a receiving cavity and a groove, wherein the groove is located on the cavity wall of the receiving cavity; A clamping assembly, telescopically arranged in the groove; A male buckle, comprising a locking member and an unlocking member, wherein the unlocking member is provided on the locking member, and the locking member and the unlocking member are movable relative to each other along the axial direction of the male buckle; In which, the locking member is used to extend into the accommodating cavity and engage with the snap-fit assembly extending from the groove into the accommodating cavity, so that the lock is in the locked state; the unlocking member is used to extend into the accommodating cavity and contact the snap-fit assembly, and retract the snap-fit assembly from the accommodating cavity to the groove, so that the lock is in the unlocked state.

2. The buckle according to claim 1, wherein The clamping assembly comprises: an elastic member, located in the groove; A clamping member is movably disposed in the groove, and the clamping member has a first end and a second end connected to each other, the first end being connected to the elastic member; the second end is used to extend from the groove into the accommodating cavity and clamp with the locking member, or to be retracted into the groove under the push of the unlocking member.

3. The buckle according to claim 2, characterized in that, The first end portion has a connecting groove, and the elastic member extends into the connecting groove and is connected to the clamping member.

4. The buckle according to claim 2 or 3, characterized in that, The second end portion has a snap-fit surface and an inclined surface, the snap-fit surface and the inclined surface are connected, the snap-fit surface is used to snap-fit with the locking member and is parallel to the contact surface of the locking member; the inclined surface is used to contact the unlocking member, and the distance between the inclined surface and the axis of the male buckle gradually increases along the direction from the locking member to the unlocking member.

5. The buckle according to claim 1, characterized in that, The female buckle includes a first main body and a first protrusion that are connected to each other. The accommodating cavity and the groove are located in the first main body. The first protrusion protrudes from a side of the first main body away from the accommodating cavity.

6. The buckle according to claim 1, characterized in that, The locking member includes a locking portion, a second main body portion and a second protrusion connected in sequence, and the second main body portion is connected between the locking portion and the second protrusion; the locking portion is arranged in the accommodating cavity and is used to be engaged with the snap-fit assembly; the unlocking member is movably arranged on the second main body portion; the second protrusion is movably inserted into the accommodating cavity, and at least a portion of the second protrusion extends out of the accommodating cavity.

7. The buckle according to claim 6, characterized in that, The unlocking member is movably sleeved on the second main body portion, and the outer peripheral wall of the unlocking member is an inclined surface.

8. The buckle according to claim 6, characterized in that, The outer diameter d1 of the unlocking member, the outer diameter d2 of the locking portion and the inner diameter d3 of the accommodating cavity satisfy: d2 <d1≤d3。 9. The buckle according to claim 1, characterized in that The lock buckle also includes: A first magnetic member is disposed in the accommodating cavity and connected to a cavity wall of the accommodating cavity; The second magnetic component is provided on the locking component, and the magnetism of the second magnetic component is opposite to that of the first magnetic component.

10. The buckle according to claim 9, characterized in that, The first magnetic component is elastically connected to the cavity wall of the accommodating cavity.

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