Locking device

Abstract

The invention relates to a locking device which comprises a female buckle provided with a containing cavity, the first side wall and the second side wall of the containing cavity are oppositely arranged in the first direction, the first side wall of the containing cavity is provided with a guide face, the second side wall of the containing cavity is provided with a first limiting part, and the female buckle is provided with a first magnet; the first magnet is arranged on the bottom wall of the accommodating cavity or close to the bottom wall of the accommodating cavity; the male buckle is provided with an insertion part corresponding to the containing cavity, one side of the insertion part is provided with a second limiting part, the insertion part is further provided with a second magnet corresponding to the first magnet, and the female buckle and the male buckle are connected in the second direction; the insertion part can slide along the guide surface so as to be inserted into the accommodating cavity; after being inserted into the containing cavity, the first limiting part and the second limiting part are mutually locked, and the first magnet and the second magnet are aligned in the second direction and attract each other; the first limiting part and the second limiting part are made of rigid materials. The male buckle and the female buckle can be locked in the first direction and the second direction, and therefore the connecting effect is improved.

Description

Technical Field

[0001] The present invention relates to a locking device. Background Art

[0002] Locking devices are usually used for the connection between two components, such as the connection of a child safety seat belt, the connection between a bike bag and a bicycle, etc.

[0003] The existing locking devices are not ideal in terms of connection effect. The structures with stable connection are usually complex and costly; while the structures with simple design usually have unreliable connection. Especially under the condition of frequent opening and closing or external force impact, the connection is likely to become loose, resulting in component detachment, bringing inconvenience and even potential safety hazards to users.

[0004] The information disclosed in the background part of the present invention is only intended to enhance the overall understanding of the present invention, and should not be regarded as an admission or any form of implication that this information constitutes the prior art already known to those of ordinary skill in the art. Summary of the Invention

[0005] The purpose of the present invention is to provide a locking device which is not only simple in structure but also reliable in connection.

[0006] To solve the above problems, the present invention provides a locking device, which includes: a female buckle having a receiving cavity, the first side wall and the second side wall of the receiving cavity being oppositely arranged in a first direction, the first side wall of the receiving cavity having a guiding surface, the second side wall of the receiving cavity having a first limiting portion, the female buckle being provided with a first magnet, the first magnet being arranged at the bottom wall of the receiving cavity or a position close to the bottom wall of the receiving cavity; and a male buckle having an insertion portion corresponding to the receiving cavity, one side of the insertion portion having a second limiting portion corresponding to the first limiting portion, the insertion portion further having a second magnet corresponding to the first magnet, and the female buckle and the male buckle being joined along a second direction; wherein, the insertion portion can slide along the guiding surface to insert into the receiving cavity; after being inserted into the receiving cavity, the first limiting portion and the second limiting portion are locked with each other, and the first magnet and the second magnet are aligned in the second direction and attract each other.

[0007] Preferably, the first limiting portion and the second limiting portion are of rigid structures.

[0008] Preferably, when the male buckle and the female buckle approach each other, a magnetic force is generated between the first magnet and the second magnet, so that the insertion portion contacts the guiding surface and slides along the guiding surface to a state where the insertion portion and the bottom wall of the receiving cavity are aligned.

[0009] Preferably, the first limiting portion extends inwardly from a position on the second sidewall of the receiving cavity that is away from the bottom wall of the receiving cavity to form a first clamping groove; the male buckle further includes a male buckle substrate, the insertion portion is located on the male buckle substrate, and the second limiting portion extends outwardly from a position on the sidewall of the insertion portion that is away from the male buckle substrate to form a second clamping groove; wherein, after the insertion portion is inserted into the receiving cavity, the second limiting portion is located in the first clamping groove, and the first limiting portion is located in the second clamping groove, so that the first limiting portion and the second limiting portion are locked to each other.

[0010] Preferably, the distance of the first clamping groove in the second direction is greater than the thickness of the second limiting portion in the second direction.

[0011] Preferably, the distance of the first clamping groove in the second direction is equal to the thickness of the second limiting portion in the second direction.

[0012] Preferably, a friction portion is provided on the contact surface between the first limiting portion and the second limiting portion.

[0013] Preferably, a plurality of the first magnets are provided and distributed in the third direction; the number of the second magnets is the same as that of the first magnets, and they are distributed in the third direction and are in one-to-one correspondence with the first magnets in the second direction.

[0014] Preferably, the female buckle includes: a female buckle substrate having the receiving cavity and a first mounting groove facing away from the receiving cavity, and the first magnet is mounted in the first mounting groove; and a female buckle cover plate mounted on a side of the female buckle substrate facing away from the receiving cavity.

[0015] Preferably, the male buckle has a second mounting groove that penetrates the male buckle substrate and extends to the inside of the insertion portion, and the second magnet is mounted in the second mounting groove; the male buckle further includes a male buckle cover plate mounted on a side of the male buckle substrate facing away from the insertion portion.

[0016] Preferably, the guiding surface is a plane or a curved surface.

[0017] The latching device of the present invention has the following beneficial effects:

[0018] (1) The first magnet and the second magnet generate mutually attractive magnetic forces in the second direction to lock the male buckle and the female buckle in the second direction. In addition, the magnetic forces can also limit the relative movement of the male buckle and the female buckle in the first direction.

[0019] (2) The first limiting portion and the second limiting portion with rigid structures can be locked to each other in the second direction to further lock the male buckle and the female buckle in the second direction, thereby improving the connection effect.

[0020] (3) The guiding surface can guide the insertion part into the accommodating cavity, and the magnetic force can assist the insertion part to be inserted into the accommodating cavity.

[0021] (4) It has a simple structure, is easy to generate and process, and is convenient to use with reliable connection.

[0022] The method and device of the present invention have other characteristics and advantages, which will be obvious from the accompanying drawings incorporated herein and the subsequent embodiments, or will be described in detail in the accompanying drawings incorporated herein and the subsequent embodiments. These drawings and embodiments are jointly used to explain the specific principles of the present invention. Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of the locking device according to the embodiment of the present invention;

[0024] Figure 2 is Figure 1 the cross-sectional view at A-A in

[0025] Figure 3A It is a schematic structural diagram of the female buckle substrate;

[0026] Figure 3B It is a schematic structural diagram of the female buckle substrate from another perspective;

[0027] Figure 3C It is a schematic structural diagram of the male buckle substrate;

[0028] Figure 3D It is a schematic structural diagram of the male buckle substrate from another perspective;

[0029] Figure 4 It is a schematic diagram of the female buckle and the male buckle not engaged;

[0030] Figure 5 It is a schematic diagram of the process of engaging the female buckle and the male buckle Figure 1 ;

[0031] Figure 6 It is a schematic diagram of the process of engaging the female buckle and the male buckle Figure 2 .

[0032] Description of the Reference Numerals:

[0033] 100, female buckle; 101, accommodating cavity; 102, first side wall; 103, second side wall; 104, guiding surface; 105, first limiting part; 106, bottom wall; 107, first installation groove; 108, first clamping groove; 180, female buckle substrate; 190, female buckle cover;

[0034] 200, male buckle; 201, insertion part; 202, second limiting part; 203, second card slot; 204, second installation slot; 280, male buckle substrate; 290, male buckle cover plate;

[0035] 300, first magnet;

[0036] 400, second magnet.

[0037] It should be understood that the drawings are not necessarily drawn to scale and instead present simplified representations of various features to illustrate the basic principles of the present invention. The specific design features disclosed in the present invention (including, for example, specific dimensions, directions, positions, and shapes) will be determined in part by the specific application and use environment.

[0038] In these figures, throughout the various figures of the drawings, the same reference numerals represent the same or equivalent parts of the present invention. Detailed Embodiments

[0039] The following will refer in detail to the various embodiments of the present invention, examples of which are presented in the drawings and described as follows. Although the present invention will be described in conjunction with exemplary embodiments, it should be understood that this specification is not intended to limit the present invention to these exemplary embodiments. On the contrary, the present invention is intended to cover not only these exemplary embodiments, but also various alternative forms, modifications, equivalent forms, and other embodiments that may be included within the spirit of the present invention and the scope defined by the appended claims.

[0040] To facilitate the introduction of the positional relationship between the various components, a first direction, a second direction, and a third direction are introduced herein. Among them, the first side wall 102 and the second side wall 103 of the accommodation cavity 101 are oppositely arranged in the first direction, and the female buckle 100 and the male buckle 200 are engaged along the second direction. The first direction is the width direction of the female buckle 100 and the male buckle 200, the second direction is the thickness direction of the female buckle 100 and the male buckle 200, and the third direction is the length direction of the female buckle 100 and the male buckle 200. The third direction is perpendicular to the first direction and the second direction. To more clearly illustrate the positional relationship of the various structures, a three-dimensional rectangular coordinate system is added to the drawings, with the first direction being the x-axis direction, the second direction being the y-axis direction, and the third direction being the z-axis direction.

[0041] The following will be combined with Figures 1 to 6 to illustrate the locking device according to the embodiments of the present invention.

[0042] As Figure 1 and Figure 3D shown, the locking device according to the embodiments of the present invention includes: a female buckle 100 and a male buckle 200.

[0043] The female buckle 100 has a receiving cavity 101. The first side wall 102 and the second side wall 103 of the receiving cavity 101 are oppositely arranged in the first direction (i.e., the x-axis direction). The first side wall 102 of the receiving cavity 101 has a guiding surface 104, and the second side wall 103 of the receiving cavity 101 has a first limiting portion 105. The female buckle 100 is equipped with a first magnet 300, and the first magnet 300 is arranged on the bottom wall 106 of the receiving cavity 101 or at a position close to the bottom wall 106 of the receiving cavity 101.

[0044] The male buckle 200 has an insertion portion 201 corresponding to the receiving cavity 101. One side of the insertion portion 201 has a second limiting portion 202 corresponding to the first limiting portion 105. The insertion portion 201 also has a second magnet 400 corresponding to the first magnet 300, and the female buckle 100 and the male buckle 200 are joined along the second direction (i.e., the y-axis direction).

[0045] Wherein, the insertion portion 201 can slide along the guiding surface 104 to insert into the receiving cavity 101.

[0046] After inserting into the receiving cavity 101, the first limiting portion 105 and the second limiting portion 202 are locked with each other, and the first magnet 300 and the second magnet 400 are aligned and attracted to each other in the second direction (i.e., the y-axis direction).

[0047] The first limiting portion 105 and the second limiting portion 202 are of rigid structures, that is, not easily elastically deformed.

[0048] The embodiments of the present invention have the following beneficial effects:

[0049] (1) The first magnet 300 and the second magnet 400 generate a mutually attracting magnetic force in the second direction to lock the male buckle 200 and the female buckle 100 in the second direction. In addition, the magnetic force can also limit the relative movement of the male buckle 200 and the female buckle 100 in the first direction.

[0050] (2) The first limiting portion 105 and the second limiting portion 202 of rigid structures can be locked with each other in the second direction to further lock the male buckle 200 and the female buckle 100 in the second direction, thereby improving the connection effect.

[0051] (3) The guiding surface 104 can guide the insertion portion 201 to insert into the receiving cavity 101, and the magnetic force can help the insertion portion 201 insert into the receiving cavity 101.

[0052] In one embodiment, as Figure 2 shown, the female buckle 100 includes: a female buckle base plate 180 and a female buckle cover plate 190.

[0053] As Figure 2 and Figure 3AAs shown, the female buckle base plate 180 has the above-mentioned accommodation cavity 101 and a first installation groove 107 facing away from the accommodation cavity 101, and the first magnet 300 is installed in the first installation groove 107.

[0054] The female buckle cover plate 190 is installed on the side of the female buckle base plate 180 facing away from the accommodation cavity 101 to cover the first installation groove 107 and prevent impurities such as dust from entering the first installation groove 107. In addition, the female buckle cover plate 190 and the female buckle base plate 180 are also used for the fixed installation of the female buckle 100, which can conveniently connect the female buckle 100 to the installation object. For example, the female buckle base plate 180 is provided at the bottom of the bicycle bag, and the female buckle cover plate 190 is provided inside the bicycle bag and connected to the female buckle base plate 180. In this way, the female buckle 100 can be installed on the bicycle bag.

[0055] In one embodiment, as Figure 2 shown, the first limiting portion 105 extends inward from a position on the second side wall 103 of the accommodation cavity 101 away from the bottom wall 106 of the accommodation cavity 101 to form a first clamping groove 108.

[0056] The male buckle 200 further includes a male buckle base plate 280. The insertion portion 201 is located on the male buckle base plate 280, and the second limiting portion 202 extends outward from a position on the side wall of the insertion portion 201 away from the male buckle base plate 280 to form a second clamping groove 203.

[0057] Among them, after the insertion portion 201 is inserted into the accommodation cavity 101, the second limiting portion 202 is located in the first clamping groove 108, and the first limiting portion 105 is located in the second clamping groove 203 so that the first limiting portion 105 and the second limiting portion 202 are locked to each other.

[0058] In one embodiment, as Figure 2 and Figure 3D shown, the male buckle 200 has a second installation groove 204. The second installation groove 204 penetrates through the male buckle base plate 280 and extends into the interior of the insertion portion 201, and the second magnet 400 is installed in the second installation groove 204.

[0059] The male buckle 200 further includes a male buckle cover plate 290. The male buckle cover plate 290 is installed on the side of the male buckle base plate 280 facing away from the insertion portion 201 to cover the second installation groove 204 and prevent impurities such as dust from entering the second installation groove 204. Similarly, the male buckle base plate 280 and the male buckle cover plate 290 are also used for fixed installation, which can conveniently install the male buckle 200 at the use location. For example, the male buckle base plate 280 and the male buckle cover plate 290 are respectively clamped on different sides of the installation location. After the male buckle base plate 280 and the male buckle cover plate 290 are fixedly connected, the male buckle 200 can be installed at the use location.

[0060] In Figure 2In an embodiment, the second magnet 400 does not penetrate through the bottom wall of the second mounting groove 204, and the first magnet 300 does not penetrate through the bottom wall 106 of the receiving cavity 101, that is, the second magnet 400 and the first magnet 300 are not in direct contact in the aligned state. In addition, the second magnet 400 can be arranged to penetrate through the bottom wall of the second mounting groove 204, and the first magnet 300 can be arranged to penetrate through the bottom wall of the receiving cavity 101, so that the second magnet 400 and the first magnet 300 are in direct contact in the aligned state.

[0061] In one embodiment, the S pole of the first magnet 300 faces the male buckle 200, and the N pole of the second magnet 400 faces the female buckle 100, so that an attractive magnetic force in the second direction is generated between the first magnet 300 and the second magnet 400.

[0062] In another embodiment, the N pole of the first magnet 300 faces the male buckle 200, and the S pole of the second magnet 400 faces the female buckle 100, so that an attractive magnetic force in the second direction is generated between the first magnet 300 and the second magnet 400.

[0063] Of course, the magnetic pole settings of the first magnet 300 and the second magnet 400 are arranged in such a way that they attract each other when the first magnet 300 and the second magnet 400 are close to each other, and it includes but is not limited to the above settings.

[0064] In one embodiment, there is 1 first magnet 300 and 1 second magnet 400.

[0065] In another embodiment, there are multiple first magnets 300, which are sequentially distributed in the third direction (i.e., the z-axis direction).

[0066] The number of the second magnets 400 is the same as that of the first magnets 300, and they are distributed in the third direction and are in one-to-one correspondence with the first magnets 300 in the second direction to further enhance the magnetic force of mutual attraction between the female buckle 100 and the male buckle 200.

[0067] In an exemplary embodiment, the first magnet 300 can be a permanent magnet. Here, the type of the first magnet 300 is not limited thereto, and it can be any form in the prior art as long as it can achieve the above functions.

[0068] In an exemplary embodiment, the second magnet 400 can be a permanent magnet. Here, the type of the second magnet 400 is not limited thereto, and it can be any form in the prior art as long as it can achieve the above functions.

[0069] In one embodiment, as Figure 2 shown, the guiding surface 104 is a plane.

[0070] In another embodiment, the guiding surface 104 is a curved surface.

[0071] In one embodiment, the contact surface between the first limiting portion 105 and the second limiting portion 202 is a plane or a curved surface.

[0072] The latching device of the present invention can be applied to the vehicle bar and the vehicle bag of a two-wheeled vehicle. The two-wheeled vehicle includes, but is not limited to, bicycles, electric bicycles, and motorcycles. The vehicle bag can be used to mount items such as mobile phones. The female buckle 100 can be provided on the vehicle bar, and the male buckle 200 can be provided on the vehicle bag. In addition, the male buckle 200 can be provided on the vehicle bar, and the female buckle 100 can be provided on the vehicle bag.

[0073] Of course, this is just one application scenario, and the latching device of the present invention can also be used in other scenarios.

[0074] The operation of the latching device according to the embodiment of the present invention will be described below in conjunction with the accompanying drawings. The application scenario is that the female buckle 100 is provided on the vehicle bag, and the male buckle 200 is provided on the vehicle bar, and the user needs to mount the vehicle bag on the vehicle bar.

[0075] When the male buckle 200 and the female buckle 100 are not locked, the insertion portion 201 of the male buckle 200 can be roughly aligned with the guiding surface 104 of the receiving cavity 101 of the female buckle 100 (for reference, see Figure 4 ).

[0076] When the male buckle 200 and the female buckle 100 approach each other, the insertion portion 201 of the male buckle 200 comes into contact with the guiding surface 104 (for reference, see Figure 5 ) and slides along the guiding surface 104 relative to the female buckle 100 in a direction closer to the female buckle 100 (the relative movement is between the female buckle 100 and the male buckle 200. If the female buckle 100 is fixed, the male buckle 200 moves; if the male buckle 200 is fixed, the female buckle 100 moves). Under the guidance of the guiding surface 104, while the insertion portion 201 moves relative to the female buckle 100 in the first direction, it also moves in the second direction until the insertion portion 201 fits against the bottom wall 106 of the receiving cavity 101 (for reference, see Figure 6 ).

[0077] During the process of the male buckle 200 sliding along the guiding surface 104 relative to the female buckle 100, the first magnet 300 and the second magnet 400 generate a mutually attracting magnetic force. Under the action of this magnetic force, the insertion portion 201 can slide along the guiding surface 104 in a direction closer to the female buckle 100, that is, during the process of sliding along the guiding surface 104 in a direction closer to the female buckle 100, the user no longer needs to apply a force to the male buckle 200 or the female buckle 100 that points to the female buckle 100 or the male buckle 200.

[0078] As shown in Figure 6As shown, when the insertion part 201 abuts against the bottom wall 106 of the receiving cavity 101, the second limiting part 202 of the insertion part 201 is aligned with the first card slot 108 in the first direction, and the first limiting part 105 of the female buckle 100 is aligned with the second card slot 203 of the male buckle 200 in the first direction.

[0079] After the insertion part 201 abuts against the bottom wall 106 of the receiving cavity 101, the second limiting part 202 of the male buckle 200 is inserted into the first card slot 108 of the female buckle 100, and the first limiting part 105 of the female buckle 100 is inserted into the second card slot 203 of the male buckle 200 (for reference, see Figure 2 ). At this time, the first limiting part 105 and the second limiting part 202 can limit each other in the second direction, thereby completing the mutual locking of the male buckle 200 and the female buckle 100 in the second direction.

[0080] When the second limiting part 202 of the male buckle 200 is inserted into the first card slot 108 of the female buckle 100, the first magnet 300 and the second magnet 400 are aligned in the second direction, and the magnetic force between them reaches the maximum and is along the second direction.

[0081] The magnetic force can also limit the relative movement of the male buckle 200 and the female buckle 100 in the first direction to prevent the second limiting part 202 of the male buckle 200 from disengaging from the first card slot 108 of the female buckle 100 due to shaking, and prevent the first limiting part 105 of the female buckle 100 from disengaging from the second card slot 203 of the male buckle 200.

[0082] In Figure 2 the implementation scheme, the distance of the first card slot 108 in the second direction is greater than the thickness of the second limiting part 202 in the second direction, so that when the insertion part 201 abuts against the bottom wall 106 of the receiving cavity 101 and the first magnet 300 and the second magnet 400 are aligned in the second direction, the first limiting part 105 and the second limiting part 202 do not contact, that is, there is a gap between the first limiting part 105 and the second limiting part 202.

[0083] When the external force along the second direction exceeds the magnetic force between the first magnet 300 and the second magnet 400, the male buckle 200 moves away from the female buckle 100, and the first limiting part 105 and the second limiting part 202 come into contact, thereby restricting the separation of the male buckle 200 and the female buckle 100. That is, although the first magnet 300 and the second magnet 400 have been separated at this time, the first limiting part 105 and the second limiting part 202 can still lock the male buckle 200 and the female buckle 100 in the second direction.

[0084] In another embodiment, the distance of the first card slot 108 in the second direction can be set to be adapted to the thickness of the second limiting portion 202 in the second direction, that is, the distance of the first card slot 108 in the second direction is equal to the thickness of the second limiting portion 202 in the second direction, so that the insertion portion 201 fits against the bottom wall 106 of the receiving cavity 101, and when the first magnet 300 and the second magnet 400 are aligned in the second direction, the first limiting portion 105 and the second limiting portion 202 are in contact. In this embodiment, a friction portion can be provided on the contact surface of the first limiting portion 105 and the second limiting portion 202 to increase the sliding friction force between the first limiting portion 105 and the second limiting portion 202 in the first direction and prevent them from no longer being locked to each other due to shaking. The friction portion can be in the form of a corrugation or a component with a relatively large coefficient of friction.

[0085] When it is necessary to separate the male buckle 200 and the female buckle 100, a force is applied to the male buckle 200 from the second side wall 103 of the receiving cavity 101 towards the insertion portion 201, or a force is applied to the female buckle 100 from the insertion portion 201 towards the second side wall 103, so that the second limiting portion 202 of the male buckle 200 disengages from the first card slot 108 of the female buckle 100, and the first limiting portion 105 of the female buckle 100 disengages from the second card slot 203 of the male buckle 200, thereby causing the second limiting portion 202 and the first limiting portion 105 not to limit each other in the second direction.

[0086] Then, a force is applied to the male buckle 200 away from the female buckle 100, or a force is applied to the female buckle 100 away from the male buckle 200, thereby achieving the separation of the male buckle 200 and the female buckle 100.

[0087] For the convenience of explanation and to precisely define the appended claims, the terms "upper", "lower", "inner", "outer", "above", "below", "upper", "lower", "upward", "downward", "front", "rear", "behind", "inner side", "outer side", "inward", "outward", "inside", "outside", "internal", "external", "internal", "external", "forward", "backward" are used to describe the features of the exemplary specific embodiments with reference to the positions of these features shown in the accompanying drawings.

[0088] The foregoing description of the specific exemplary embodiments of the present invention has been presented for purposes of illustration and description. The foregoing description is not intended to be exhaustive nor to limit the invention to the precise form disclosed, and obviously many changes and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the particular principles of the invention and its practical application so that others skilled in the art may implement and utilize the various exemplary embodiments of the invention and their various alternative forms and modifications. The scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A locking device, comprising: A female buckle, which has an accommodating cavity, wherein a first side wall and a second side wall of the accommodating cavity are arranged opposite to each other in a first direction, the first side wall of the accommodating cavity has a guiding surface, and the second side wall of the accommodating cavity has a first limiting portion, and the female buckle is installed with a first magnet, and the first magnet is arranged on the bottom wall of the accommodating cavity or at a position close to the bottom wall of the accommodating cavity; and A male buckle, which has an insertion portion corresponding to the accommodating cavity, a side of the insertion portion has a second limiting portion corresponding to the first limiting portion, the insertion portion also has a second magnet corresponding to the first magnet, and the female buckle and the male buckle are engaged along a second direction; Wherein, the insertion portion can slide along the guide surface to be inserted into the accommodating cavity; After being inserted into the accommodating cavity, the first limiting portion and the second limiting portion are locked with each other, and the first magnet and the second magnet are aligned in the second direction and attract each other.

2. The locking device according to claim 1, wherein: The first limiting portion and the second limiting portion are rigid structures.

3. The locking device according to claim 1, wherein: When the male buckle and the female buckle approach each other, a magnetic force is generated between the first magnet and the second magnet, so that the insertion portion contacts the guide surface and slides along the guide surface until the insertion portion and the bottom wall of the accommodating cavity are aligned.

4. The locking device according to claim 1, wherein: The first limiting portion extends inward from a position of the second side wall of the accommodating cavity away from the bottom wall of the accommodating cavity to form a first clamping groove; The male buckle further includes a male buckle substrate, the insertion portion is located on the male buckle substrate, and the second limiting portion extends outward from a position of a side wall of the insertion portion away from the male buckle substrate to form a second clamping groove; After the insertion portion is inserted into the accommodating cavity, the second limiting portion is located in the first card slot, and the first limiting portion is located in the second card slot, so that the first limiting portion and the second limiting portion are locked with each other.

5. The locking device according to claim 3, wherein: The distance of the first slot in the second direction is greater than or equal to the thickness of the second limiting portion in the second direction.

6. The locking device according to claim 5, wherein: A friction portion is disposed on the contact surface of the first limiting portion and the second limiting portion.

7. The locking device according to claim 1, wherein: The first magnets are provided in plurality and are distributed in sequence in the third direction; The number of the second magnets is the same as that of the first magnets, and the second magnets are distributed in the third direction and correspond one-to-one with the first magnets in the second direction.

8. The locking device according to claim 1, wherein: The female buckle comprises: a female buckle substrate, comprising the accommodating cavity and a first mounting groove facing away from the accommodating cavity, wherein the first magnet is mounted in the first mounting groove; and A female buckle cover plate is mounted to a side of the female buckle substrate facing away from the accommodating cavity.

9. The locking device according to claim 3, wherein: The male buckle has a second mounting groove, the second mounting groove penetrates the male buckle substrate and extends to the inside of the insertion portion, and the second magnet is mounted in the second mounting groove; The male buckle further includes a male buckle cover plate mounted to a side of the male buckle base plate facing away from the insertion portion.

10. The locking device according to claim 1, wherein: The guide surface is a plane or a curved surface.

Images