Buckle

Abstract

The present application discloses a buckle (100), which comprises a male buckle assembly (1) with a locking portion (11) and a female buckle assembly (2) with a locking hole (226), wherein the locking portion (11) can be inserted into the locking hole (226) to enable the male buckle assembly (1) and the female buckle assembly (2) to form a magnetic connection. The female buckle assembly (2) comprises a seat body (22), a pressing element (24) and a lock-in element (25). The lock-in element (25) is engaged with the locking portion (11) at the locking hole (226). The pressing element (24) comprises a pressing portion (241) and a first elastic portion (242). The pressing portion (241) is pressed in a first direction to push the lock-in element (25) to disengage from the locking portion (11). A projection of the first elastic portion (242) and a projection of the pressing portion (241) along the first direction do not overlap with each other.

Description

BUCKLETECHNICAL FIELD

[0001] The present application relates to a buckle, and in particular, to a magnetic buckle.BACKGROUND

[0002] The magnetic buckle is a device that assists in the connection and separation of the buckle with magnetism. The magnetic buckle is widely used in products such as strollers, child safety seats, infant carriers and so on. In a product of infant carrier, the magnetic buckle may quickly and conveniently connect and separate two components, thus facilitating the putting on and taking off of the infant carrier. When meeting the connection strength and use stability requirements, the demand of users for magnetic buckle products with small volume, light weight and simple structure is particularly obvious. In addition, the applicant also expects the buckle to have good strength and a beautiful appearance.

[0003] Therefore, there is a need to develop a buckle that can solve the above problems.SUMMARY

[0004] A purpose of the present application is to provide a buckle with a small volume and a light weight.

[0005] A purpose of the present application is further to provide a buckle that is convenient to operate and stable in operation.

[0006] A purpose of the present application is further to provide a buckle with high structural strength.

[0007] In order to achieve the above purposes, on one hand, a buckle is provided. The buckle includes a male buckle assembly with a locking portion and a female buckle assembly with a locking hole, wherein the locking portion can be inserted into the locking hole to form a magnetic connection between the male buckle assembly and the female buckle assembly, and the female buckle assembly includes a seat body, a pressing element and a lock-in element, wherein the lock-in element is engaged with the locking portion at the locking hole. The pressing element includes a pressing portionand a first elastic portion, wherein the pressing portion is pressed in a first direction to push the lock-in element to disengage from the locking portion, and a projection of the first elastic portion and a projection of the pressing portion along the first direction do not overlap with each other.

[0008] In one embodiment, the pressing element includes two pressing portions which are symmetrically arranged on two sides of the seat body, and the first elastic portion is located between the two pressing portions and integrally formed with the two pressing portions.

[0009] In one embodiment, the first elastic portion connects the two pressing portions to each other on two sides of the two pressing portions respectively.

[0010] In one embodiment, the first elastic portion tends to make the two pressing portions move away from each other.

[0011] In one embodiment, the female buckle assembly includes two lock-in elements, each lock-in element is integrally formed and includes a second elastic portion, and the second elastic portion is located at a side portion of the lock-in element and provided in a second direction.

[0012] In one embodiment, the pressing element includes a pushing end and the lock-in element includes an abutting end, and the pressing portion pushes the abutting end by means of the pushing end to push the lock-in element to move in the second direction and disengage from the locking portion, wherein the second direction intersects the first direction.

[0013] In one embodiment, the lock-in element includes an engaging portion, and the lock-in element is engaged with or disengaged from the locking portion through the engaging portion.

[0014] In one embodiment, an end of the second elastic portion is connected to the abutting end, a connecting hole is formed at the other end of the second elastic portion, a connecting post is formed on the seat body, and the connecting hole is sleeved on the connecting post.

[0015] In one embodiment, a first connecting end is formed on the seat body, and a first notch is formed on the pressing portion, and the first connecting end is slidably engaged with the first notch, so that the first connecting end guides the pressing portion to move in the first direction.

[0016] In one embodiment, a second connecting end is formed on the seat body, and a second notch is formed on the engaging portion, and the second connecting end is slidably engaged with the second notch, so that the second connecting end guides the engaging portion to move in a second direction.

[0017] In one embodiment, the male buckle assembly includes a locking element and a fixing element engaged with each other, the locking element forms a concave cavity, and the fixing elementseals the concave cavity to accommodate a first magnet.

[0018] In one embodiment, the seat body has a mounting portion for mounting a second magnet, and the first connecting end and the second connecting end are connected to the mounting portion.

[0019] In one embodiment, the first connecting end and the second connecting end are both formed as strip-shaped protrusions.

[0020] In one embodiment, a first limiting portion is formed on the seat body, and the first limiting portion is formed as two strip-shaped protrusions which are parallel to each other and extend in the second direction to limit a moving direction of the lock-in element.

[0021] In one embodiment, a locking slot is formed on the locking portion, and the engaging portion extends into the locking slot to prevent the locking portion from leaving the locking hole.

[0022] In one embodiment, the pressing element is provided with a connecting arm in the first direction, the pressing element and the lock-in element are integrally formed and connected through the connecting arm, and the pressing element and the lock-in element are respectively located on two sides of the locking hole in the first direction.

[0023] In one embodiment, the pressing element includes two pressing portions and two connecting arms, the lock-in element includes two engaging portions, the two pressing portions and the two engaging portions are symmetrically arranged on two sides of the locking hole in the first direction, and two ends of the first elastic portion are respectively connected to the two pressing portions.

[0024] In one embodiment, a fixed end is formed on the seat body, a first end of the first elastic portion is connected to the connecting arm, and a second end of the first elastic portion is capable of being detachably connected to the fixed end.

[0025] In one embodiment, an extension portion is formed at an end of the connecting arm close to the pressing portion connected with the connecting arm, the extension portion extends in a second direction, and the first end of the first elastic portion is connected to the extension portion.

[0026] In one embodiment, the extension portion extends away from the locking hole, and the first elastic portion is connected to an end of the extension portion away from the connecting arm.

[0027] In one embodiment, the limiting end includes a first limiting end and a second limiting end, wherein the first limiting end is matched with the extension portion to limit the position, and the second limiting end is matched with the pressing portion to limit the position, and the first limiting end and the second limiting end respectively limit the position at two ends of the pressing portionmoving in the first direction.

[0028] In one embodiment, the second limiting end includes a first limiting surface, and the pressing portion is matched with the first limiting surface for limiting the position; and / or the second limiting end includes a second limiting surface, and the connecting arm is matched with the second limiting surface for limiting the position.

[0029] In one embodiment, the pressing element includes a first pressing portion and a second pressing portion which are respectively located on two sides of the locking hole, and a first connecting arm and a second connecting arm which are respectively located on two sides of the locking hole, and the lock-in element includes a first engaging portion and a second engaging portion which are respectively located on two sides of the locking hole. The first connecting arm is connected with the first pressing portion and the first engaging portion, and the first pressing portion and the first engaging portion are located on two sides of the locking hole respectively. The second connecting arm is connected with the second pressing portion and the second engaging portion, and the second pressing portion and the second engaging portion are located on two sides of the locking hole respectively. The first elastic portion is located between the first pressing portion and the second engaging portion, and / or the first elastic portion is located between the second pressing portion and the first engaging portion.

[0030] In one embodiment, an end of the first pressing portion and / or the second pressing portion has a protruding clamping end, and a limiting end corresponding to the clamping end is formed on the seat body, and the clamping end is located at an inner side of the limiting end.

[0031] In one embodiment, the two connecting arms are located one two sides of the two pressing portions in a second direction, and the second direction intersects the first direction.

[0032] In one embodiment, ends of the two pressing portions are provided with two opposite clamping ends, and the first elastic portion is provided between the two clamping ends of the two pressing portions in the first direction.

[0033] In one embodiment, a first notch is formed on each of the two engaging portions, a first protrusion matched with the first notch is formed on the seat body, and the first notch and / or the first protrusion extend in the first direction.

[0034] In one embodiment, a second notch is formed on the first elastic portion, and a second protrusion matched with the second notch is formed on the seat body, and the second notch and thesecond protrusion extend in a second direction.

[0035] In one embodiment, a second limiting portion is formed on the seat body, and the second limiting portion is formed as two strip-shaped protrusions which are parallel to each other and extend in the first direction to limit a moving direction of the two connecting arms.

[0036] In one embodiment, a second limiting portion is formed on the seat body, and the second limiting portion is formed as two strip-shaped protrusions which are parallel to each other and extend in the first direction, and a third limiting portion is formed on the seat body, and the third limiting portion is formed on a side of the second limiting portion close to the locking hole.

[0037] In one embodiment, the third limiting portion is formed as two strip-shaped protrusions and is parallel to the second limiting portion.

[0038] In one embodiment, the pressing element is provided with a connecting arm in the first direction, and the connecting arm is located between the third limiting portion and the second limiting portion.

[0039] In one embodiment, a length of the third limiting portion is smaller than a length of the second limiting portion.

[0040] In one embodiment, the first elastic portion is provided with a positioning post, the seat body is provided with a positioning hole, and the positioning post is located in the positioning hole.

[0041] In one embodiment, the first elastic portion includes two bending portions, and the positioning post is provided between the two bending portions.

[0042] In one embodiment, the buckle includes a mounting portion separated from the seat body, the seat body is provided with a first magnet receiving portion, and the mounting portion is buckled on an outer side of the first magnet receiving portion.

[0043] In one embodiment, a convex rib is formed on the outer side of the first magnet receiving portion.

[0044] In one embodiment, a rib is formed on the outer side of the first magnet receiving portion, a concave portion is formed on an inner side of the mounting portion, and the rib is slidably provided in the concave portion.

[0045] In one embodiment, the buckle includes a mounting portion separated from the seat body. A fourth limiting portion is provided on an outer side of the mounting portion, and the lock-in element includes an engaging portion. The lock-in element is engaged with or disengaged from the lockingportion through the engaging portion. The fourth limiting portion limits a movement of the engaging portion in a third direction, and the third direction is perpendicular to the first direction.

[0046] In one embodiment, the pressing portion has a third notch, and the fourth limiting portion is matched with the third notch.

[0047] In one embodiment, a fifth limiting portion is formed on the female buckle assembly, and the fifth limiting portion extends in a third direction to prevent the connecting arm from moving in the third direction.

[0048] In another aspect, a buckle is provided. The buckle includes a male buckle assembly and a female buckle assembly, wherein the male buckle assembly is partially inserted into the female buckle assembly to be locked by the female buckle assembly. The female buckle assembly includes a cover body, a seat body, a pressing element and a lock-in element. The cover body and the seat body are fixed to each other and at least partially surround the pressing element and the lock-in element. The pressing element is linked with the lock-in element. The cover body and the seat body are combined with each other by ultrasonic welding.

[0049] In one embodiment, the pressing element includes a pressing portion and an elastic portion, and a movement of the pressing portion in a first direction causes the lock-in element and the male buckle assembly unlocking in the first direction. The elastic portion provides an elastic force to make the lock-in element tend to be locked with the male buckle assembly, and a projection of the elastic portion and a projection of the pressing portion along the first direction do not overlap with each other, and / or the pressing element includes two pressing portions, two elastic portions and two connecting arms. The female buckle assembly includes two lock-in elements. An end of each of the two connecting arms is connected with one of the two pressing portions, and the other end of each of the two connecting arms is connected with one of the two lock-in elements.

[0050] In one embodiment, a protruding connecting post is formed on an inner side of one of the seat body and the cover body, and a protruding connecting cylinder is formed on an inner side of the other of the seat body and the cover body, and the connecting post is inserted into the connecting cylinder; and / or one of the cover body and the seat body has an elastic finger, and the other of the cover body and the seat body has a snap hole, wherein the elastic finger is matched with the snap hole to make the cover body engage with the seat body.

[0051] In one embodiment, the buckle meets at least one of the following requirements: theconnecting post is ultrasonically welded with the connecting cylinder; an outer peripheral edge of the cover body is ultrasonically welded with an outer peripheral edge of the seat body; and the elastic finger is ultrasonically welded with the snap hole.

[0052] In one embodiment, the seat body has two connecting posts, and the cover body has two connecting cylinders corresponding to the two connecting posts, and the two connecting posts are respectively formed on two sides of the lock-in element in a second direction, and the second direction is perpendicular to the first direction.

[0053] In one embodiment, the cover body and the seat body are combined with each other in a third direction, which is perpendicular to the first direction and the second direction, and a size of the cover body in the third direction is smaller than a size of the seat body in the third direction.

[0054] In one embodiment, the elastic portion has two bending portions, and a positioning post is provided between the two bending portions.

[0055] In one embodiment, a protruding connecting post is formed on an inner side of one of the seat body and the cover body, and the connecting post is located between the two bending portions.

[0056] In one embodiment, a plurality of limiting portions are formed on the cover body and the seat body to guide a movement of the pressing element and the lock-in element in a first direction and prevent a movement of the pressing element and the lock-in element in a second direction and a third direction, and wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0057] In one embodiment, an outer peripheral edge of the cover body has a first step, a second step and a third step, and an outer peripheral edge of the seat body has a first welding surface and a second welding surface, and the first step and the second step are ultrasonically welded with the second welding surface, and the third step is ultrasonically welded with the first welding surface, and / or the cover body and the seat body form an ultrasonic welding area, wherein the ultrasonic welding area is located on two sides of the female buckle assembly in the second direction, and the pressing element comprises a pressing portion, wherein the pressing portion is located on two sides of the female buckle assembly in the first direction.

[0058] In one embodiment, the first welding surface is perpendicular to the second welding surface.

[0059] The elastic portion of the buckle in the present application is provided at the side portion of the pressing portion and is not at the same horizontal position as the pressing direction, so that theinternal movable space is reduced, and the space utilization rate inside the buckle is improved, so that the volume of the buckle can be reduced and the buckle can be installed conveniently.

[0060] The buckle of the present application adopts the ultrasonic welding, so that the overall appearance of the buckle is beautiful, the parts can be seamlessly butted, and the overall strength of the buckle is good.BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Various objects, features and advantages of the present invention will become more apparent by considering the following detailed description of preferred embodiments of the present invention in conjunction with the accompanying drawings. The accompanying drawings are only exemplary illustrations of the present invention and are not necessarily drawn to scale. In the accompanying drawings, the same reference numerals refer to the same or similar parts throughout; in which:

[0062] FIG. 1 is a perspective view of a buckle according to a first embodiment of the present application, in which a male buckle assembly is connected with a female buckle assembly;

[0063] FIG. 2 is a perspective view of the buckle according to the first embodiment of the present application, in which the male buckle assembly is separated from the female buckle assembly;

[0064] FIG. 3 is a perspective view of the buckle according to the first embodiment of the present application, in which a cover body is removed to show an internal structure;

[0065] FIG. 3A is a plan view of the buckle according to the first embodiment of the present application, in which the cover body is removed to show the internal structure;

[0066] FIG. 4 is a sectional view of the buckle according to the first embodiment of the present application along a line A-A in FIG. 1 ;

[0067] FIG. 4A is a sectional view of the buckle according to the first embodiment of the present application along a line A-A in FIG. 1 from another angle;

[0068] FIG. 5 is a perspective view of the buckle of the first embodiment of the present application, in which the cover body is removed to show the internal structure and a pressing portion is in a pressed state;

[0069] FIG. 6 is a sectional view of the buckle according to the first embodiment of the present application, in which a sectioning method may refer to a line Al -Al in FIG. 5, and the pressing portion is in the pressed state;

[0070] FIG. 7 is a perspective view of a female buckle assembly of the buckle according to the first embodiment of the present application, in which some parts are removed to show a shielded structure;

[0071] FIG. 8 is a perspective view of the female buckle assembly of the buckle according to the first embodiment of the present application, in which some parts are removed to show the shielded structure;

[0072] FIG. 9 is an exploded perspective view of the buckle according to the first embodiment of the present application;

[0073] FIG. 10 is a perspective view of the buckle according to a second embodiment of the present application, in which a male buckle assembly is connected with a female buckle assembly;

[0074] FIG. 11 is a perspective view of the buckle according to the second embodiment of the present application, in which the male buckle assembly is separated from the female buckle assembly;

[0075] FIG. 12 is a plan view of the buckle according to the second embodiment of the present application, in which a cover body is removed to show an internal structure;

[0076] FIG. 13 is a sectional view of the buckle according to the second embodiment of the present application along a line A2-A2 in FIG. 10;

[0077] FIG. 14 is a plan view of the buckle according to the second embodiment of the present application, in which the cover body is removed to show the internal structure and a pressing portion is in a pressed state;

[0078] FIG. 15 is a sectional view of the buckle according to the second embodiment of the present application along the line A2-A2 in FIG. 10, in which the pressing portion is in the pressed state;

[0079] FIG. 16 is an exploded perspective view of the buckle according to the second embodiment of the present application;

[0080] FIG. 17 is a plan view of the buckle according to a third embodiment of the present application, in which a cover body is removed to show an internal structure;

[0081] FIG. 18 is a plan view of a female buckle assembly of the buckle according to the third embodiment of the present application, in which the cover body is removed to show the internal structure;

[0082] FIG. 19 is a plan view of a buckle according to a fourth embodiment of the present application, in which a cover body is removed to show an internal structure;

[0083] FIG. 20 is a plan view of a female buckle assembly of the buckle according to the fourthembodiment of the present application, in which the cover body is removed to show the internal structure;

[0084] FIG. 21 is a perspective view of a buckle according to a fifth embodiment of the present application, in which a male buckle assembly is separated from a female buckle assembly;

[0085] FIG. 22 is an exploded perspective view of the buckle according to the fifth embodiment of the present application;

[0086] FIG. 23 is a plan view of the buckle according to the fifth embodiment of the present application, in which a cover body is removed to show an internal structure;

[0087] FIG. 24 is a perspective view of the buckle according to the fifth embodiment of the present application, in which the cover body is removed to show the internal structure;

[0088] FIG. 25 is a perspective view of a pressing element and a lock-in element of the buckle according to the fifth embodiment of the present application;

[0089] FIG. 26 is a perspective view of a seat body of the buckle according to the fifth embodiment of the present application;

[0090] FIG. 27 is a sectional view of a buckle according to a sixth embodiment of the present application in a first direction, in which a sectioning method may refer to a line A3-A3 in FIG. 24, and a pressing portion is in an unpressed state;

[0091] FIG. 28 is an exploded perspective view of the buckle according to the sixth embodiment of the present application;

[0092] FIG. 29 is a plan view of the buckle according to the sixth embodiment of the present application, in which a cover body is removed to show an internal structure;

[0093] FIG. 30 is a perspective view of a pressing element and a lock-in element of the buckle according to the sixth embodiment of the present application;

[0094] FIG. 31 is a perspective view of a seat body of the buckle according to the sixth embodiment of the present application;

[0095] FIG. 32 is a perspective view of the cover body of the buckle according to the sixth embodiment of the present application;

[0096] FIG. 33 is a perspective view of the pressing element and lock-in element of the buckle according to the sixth embodiment of the present application from another view;

[0097] FIG. 34 is a sectional view in a second direction of the buckle according to the sixthembodiment of the present application, in which a sectioning method may refer to a line A4-A4 in FIG. 24;

[0098] FIG. 35 is a perspective view of a buckle according to a seventh embodiment of the present application;

[0099] FIG. 36 is another perspective view of the buckle according to the seventh embodiment of the present application;

[0100] FIG. 37 is yet another perspective view of the buckle according to the seventh embodiment of the present application.

[0101] FIG. 38 is a side view of a female buckle assembly according to the seventh embodiment of the present application;

[0102] FIG. 39 is a front view of the female buckle assembly according to the seventh embodiment of the present application;

[0103] FIG. 40 is a perspective view of a seat body of the female buckle assembly according to the seventh embodiment of the present application;

[0104] FIG. 41 is a perspective view of a pressing element and a lock-in element according to the seventh embodiment of the present application;

[0105] FIG. 42 is a perspective view of a cover body of the female buckle assembly according to the seventh embodiment of the present application;

[0106] FIG. 43 is a perspective view of the female buckle assembly according to the seventh embodiment of the present application, in which the cover body is removed to show an internal structure;

[0107] FIG. 44 is a perspective view of a male buckle assembly according to the seventh embodiment of the present application;

[0108] FIG. 45 is a perspective view of a buckle according to an eighth embodiment of the present application;

[0109] FIG. 46 is another perspective view of the buckle according to the eighth embodiment of the present application;

[0110] FIG. 47 is a plan view of a female buckle assembly of the eighth embodiment according to the present application, in which a cover body is removed to show an internal structure;

[0111] FIG. 47A is an exploded perspective view of the buckle according to the eighth embodimentof the present application;

[0112] FIG. 47B is another exploded perspective view of the buckle according to the eighth embodiment of the present application;

[0113] FIG. 48 is a perspective view of the female buckle assembly according to the eighth embodiment of the present application, in which the cover body is removed to show the internal structure;

[0114] FIG. 49 is a perspective view of a seat body of the female buckle assembly according to the eighth embodiment of the present application;

[0115] FIG. 50 is a perspective view of the cover body of the female buckle assembly according to the eighth embodiment of the present application;

[0116] FIG. 51 is a sectional view taken along line A5-A5 of FIG. 45; and

[0117] FIG. 52 is another perspective view of the cover body of the female buckle assembly according to the eighth embodiment of the present application.List of reference numerals:100 buckle1 male buckle assembly10 locking element11 locking portion12 locking slot13 first connecting portion14 concave cavity15 fixing element2 female buckle assembly21 cover body211 first magnet receiving portion212 convex rib213 rib214 fifth limiting portion22 seat body201 clamping slot202 elastic finger221 opening222 limiting end222a first limiting end222b second limiting end222b 1 first limiting surface222b2 second limiting surface223 first limiting portion223a second limiting portion223b positioning hole223c third limiting portion224 first connecting end224a first protrusion225 second connecting end225a second protrusion226 locking hole227 connecting post228 mounting portion2281 forth limiting portion2282 concave portion229 fixed end second connecting portion pressing element241 pressing portion2411 first notch2412 third notch2413 elongated groove2414 stopper242 first elastic portion2421 positioning end2422 positioning post2423 bending portion243 pushing end244 clamping end245 connecting arm2451 extension portion2452 limiting inclined surface246 fixed end25 lock-in element251 engaging portion2511 second notch252 abutting end253 second elastic portion2531 connecting hole first magnet second magnet ckle male buckle assemblyIls locking portion12s engaging slot female buckle assembly21s cover body201s first step202s second step203 s third step204s abutting rib211s first magnet receiving portion212s convex rib213s rib214s fifth limiting portion215s connecting cylinder216s inner docking portion217s edge docking portion218s elastic finger219s reinforcing rib22s seat body221s first welding surface222s second welding surface223as first limiting portion223bs positioning hole223cs second limiting portion224as protrusion226s locking hole227s connecting post228s clamping slot23 s second connecting portion24s pressing element241s pressing portion242s first elastic portion2422s positioning post2423 s bending portion245 s connecting arm25 s lock-in element5 s beltDETAILED DESCRIPTION

[0118] In order to explain the whole concept of the present application more clearly, the following detailed description will be made by way of example with reference to the accompanying drawings of the specification.

[0119] It should be noted that in the following description, many specific details are set forth in order to fully understand the present application. However, the present application can be implemented in other ways different from those described here. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0120] In addition, in the description of the present application, it should be understood that the terms “center”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “axial”, “radial”, “circumferential”, “two sides”, etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the indicated device or component must have a specific orientation, or must be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present application.

[0121] Directions such as “first direction”, “second direction”, “third direction”, “up and down direction" and “left and right direction” recorded in the specification are defined in order to clearly express the position relationship, and are used to distinguish different directions, rather than referring to a specific direction.

[0122] In the present application, unless otherwise specified and limited, the terms “installed”, “connected”, “coupled” and “fixed” should be understood broadly, for example, may be fixed, detachable or integrated; or may be directly connected or indirectly connected through an intermediate medium, and may be in an internal communication of two components or an interaction between two components. However, direct connection means that two connected subjects do not build a connection relationship through excessive structure, but only form an integrated part through a connection structure. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0123] In the present application, unless otherwise specified and limited, a first feature “on” or “under” a second feature may be in direct contact between the first and second features, or in indirect contact between the first and second features through an intermediate medium. In the description of this specification, the description referring to the terms “an embodiment”, “some embodiments”, “example”, “specific example” or “some examples” means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included inat least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0124] The buckle 100 of the present application may be applied to products such as strollers, child safety seats, infant carriers and the like. In the following embodiments, only the application of the buckle 100 to an infant carrier is taken as an example, but the present application is not limited to this.

[0125] A first embodiment of the present application will be described below.

[0126] Referring to FIGS. 1 and 2, the buckle 100 of the present application may include a male buckle assembly 1 and a female buckle assembly 2. The male buckle assembly 1 may have a first connecting portion 13. The first connecting portion 13 may be a groove to facilitate fixing (e.g., sewing) the male buckle assembly 1 to the corresponding part of the infant carrier. The male buckle assembly 1 may also have a locking portion 11. The female buckle assembly 2 may have a locking hole 226 (see FIG. 8). The locking portion 11 may be inserted into the locking hole 226 so that the male buckle assembly 1 and the female buckle assembly 2 form a connection. The connection formed by the male buckle assembly 1 and the female buckle assembly 2 may be a magnetic connection (described in detail below). The locking portion 11 may be a cylinder protruding from the male buckle assembly 1, and an annular locking slot 12 may be formed on the locking portion 11. The female buckle assembly 2 may include a cover body 21 and a seat body 22 combined with each other. A locking hole 226 may be formed on the seat body 22. A second connecting portion 23 may be formed on a lower side of the female buckle assembly 2, and the second connecting portion 23 may be connected with a webbing. For example, the female buckle assembly 2 may be connected to the infant carrier or a safety belt, etc. The present application is not limited to this. In this embodiment, two through holes may be formed on the second connecting portion 23 (i.e., “8”-shaped buckle), but the present application is not limited to this. Two sides of the female buckle assembly 2 may have pressing portions 241 respectively. The two pressing portions 241 may be symmetrically arranged on two sides of the seat body 22 in a first direction (a left-right direction in FIG. 4). The pressing portion 241 is used to operate the connection and separation of the male buckle assembly 1 and the female buckle assembly 2. Openings 221 may be formed on two sides of the cover body 21 and the seat body 22 (see FIG. 7). The pressing portion 241 may pass through the opening 221.

[0127] Referring to FIGS. 3 and 9, the female buckle assembly 2 may further include a pressing element 24 and a lock-in element 25. The pressing element 24 may actuate the lock-in element 25, so that the lock-in element 25 can operatively engage the locking portion 11 of the male buckle assembly 1. The lock-in element 25 may engage with the locking portion 11 at the locking hole 226. The pressing portion 241 may be pressed in the first direction to push the lock-in element 25 being disengaged with the locking portion 11.

[0128] The pressing element 24 may be integrally formed. Alternatively, the pressing element 24 may be multiple parts independent of each other. The pressing element 24 may include a pressing portion 241 and a first elastic portion 242. The first elastic portion 242 may be provided at upper and lower sides of the pressing portion 241 and connect the two pressing portions 241 together. The first elastic portion 242 is located between the two pressing portions 241 and integrally formed with the two pressing portions 241. Alternatively, the first elastic portion 242 and the two pressing portions241 may be independent of each other. A projection of the first elastic portion 242 and a projection of the pressing portion 241 along the first direction do not overlap with each other. The first elastic portion 242 may have a curved shape and provide an elastic force to separate the two pressing portions 241 from each other by elastic deformation. Two ends of the first elastic portion 242 may form a pushing end 243 to push an abutting end 252 of the lock-in element 25. A clamping end 244 may be formed between the pushing end 243 and the pressing portion 241. An outer side of the clamping end 244 may abut against a limiting end 222 on the seat body 22 to prevent the pressing portion 241 from being pushed out of the seat body 22 by the first elastic portion 242. The limiting end 222 may cooperate with the clamping end 244 to facilitate the quick installation of the pressing element 24 and limit the movable stroke. The number of the limiting end 222 may correspond to the number of the clamping end 244. In this embodiment, two sides of the pressing portion 241 in a second direction are provided with the limiting end 222 and the clamping end 244. In another embodiment, one side of the pressing portion 241 in the second direction is provided with the limiting end 222 and the clamping end 244. It should be noted that the projection of the first elastic portion242 and the pressing portion 241 along the first direction means that the first elastic portion 242 and the pressing portion 241 are projected along the first direction onto the plane perpendicular to the first direction (that is, the plane where the second direction lies).

[0129] Since the first elastic portion 242 is located at one side or both sides of the pressing portion241 in the second direction, the first elastic portion 242 will not hinder the movement of the pressing portion 241, so that the two pressing portions 241 may be set closer to each other, thereby reducing a width of the buckle 100 (in the present application, the width may refer to a dimension of a moving direction of the pressing portion 241).

[0130] Referring to FIGS. 3 to 4A, the seat body 22 may have a mounting portion 228. The mounting portion 228 may accommodate a first magnet 3. The cover body 21 may cooperate with the seat body 22 to seal the first magnet 3.

[0131] Referring to FIG. 9, the male buckle assembly 1 may include a locking element 10 and a fixing element 15 matched with each other. Referring to FIGS. 4 and 4A, the locking element 10 may form a concave cavity 14 for accommodating a second magnet 4. The fixing element 15 may be inserted into the concave cavity 14 to cooperate with the locking element 10 to seal the first magnet 3. The first magnet 3 and the second magnet 4 may be positioned at positions opposite to each other. The first magnet 3 and the second magnet 4 may be provided to attract each other. When the lock-in portion 10 enters the locking hole 226, the male buckle assembly 1 and the female buckle assembly 2 are connected together due to an attractive force between the first magnet 3 and the second magnet 4. Alternatively, the first magnet 3 and the second magnet 4 may be provided to repel each other.

[0132] Referring to FIGS. 3 to 6, the lock-in element 25 may have the engaging portion 251, the abutting end 252 and the second elastic portion 253. When the male buckle assembly 1 is engaged with the female buckle assembly 2, the engaging portion 251 enters the locking hole 226 and enters the locking slot 12 on the locking portion 11 located in the locking hole 226. At this time, the engaging portion 251 abuts against the locking portion 11, so that the male buckle assembly 1 cannot be disengaged from the female buckle assembly 2. The abutting end 252 is linked with the engaging portion 251, and the abutting end 252 may have an approximately triangular shape so as to form inclined surfaces on both sides. When the pressing portion 241 is actuated inward (as shown by a solid arrow in FIG. 5), the pushing end 243 and the first elastic portion 242 press the inclined surfaces of the abutting end 252, so that the engaging portions 251 of the two lock-in elements 25 move away from the locking hole 226 respectively (as shown by the dashed arrow in FIG. 5). When the engaging portion 251 leaves the locking slot 12, the male buckle assembly 1 and the female buckle assembly 2 may be separated from each other by overcoming the attractive force between the first magnet 3 and the second magnet 4, that is, the male buckle assembly 1 and the female buckle assembly 2 aredisengaged from each other.

[0133] Referring to FIGS. 7 to 9, the second elastic portion 253 may have a curved shape and provide an elastic force to push the engaging portion 251 toward the locking hole 226 through elastic deformation. An end of the second elastic portion 253 is connected to the abutting end 252, and the other end of the second elastic portion 253 forms a connecting hole 2531. A connecting post 227 may be formed on the seat body 22. The connecting hole 2531 is sleeved on the connecting post 227. It should be noted that one of the other end of the second elastic portion 253 and the seat body 22 is provided with the connecting post and the other is provided with a connecting hole to realize the connection. Therefore, in another embodiment, the connecting post is formed on the other end of the second elastic portion 253, and the connecting hole is formed on the seat body 22. The connecting hole 2531 may be sleeved on the connecting post 227. The second elastic portion 253 may be located below the first elastic portion 242 (a lower part in FIG. 4 or FIG. 4A), so that the movements of the first elastic portion 242 and the second elastic portion 253 do not interfere with each other, which may reduce a volume of the buckle 100.

[0134] The seat body 22 may have a first connecting end 224 and a second connecting end 225. The first connecting end 224 may be formed on the left and right sides (both sides in the first direction) of the mounting portion 228, and the second connecting end 225 may be formed on the upper and lower sides (both sides in the second direction) of the mounting portion 228. Both the first connecting end 224 and the second connecting end 225 may be formed in a convex shape.

[0135] In some embodiments, an end of the second elastic portion 253 may be connected to the center of the abutting end 252 (i.e., aligned with the second connecting end 225 in the second direction), and the abutting end 252 and the second connecting end 225 may be centrally provided relative to the seat body 22. The connection hole 2531 and the connection post 227 may be aligned with the second connecting end 225 in the second direction. That is, two ends of the second elastic portion 253 in the second direction are aligned in the second direction, and two ends of the second elastic portion 253 in the second direction are centrally provided on the seat body 22. In this way, the second elastic portion 253 can exert an elastic force in the second direction without generating an elastic force pointing in other directions except the second direction.

[0136] A first notch 2411 may be formed on the pressing portion 241. A second notch 2511 may be formed on the engaging portion 251. The first notch 2411 may be movably matched with the firstconnecting end 224 to ensure the stability of the pressing element 24 during the movement of the pressing element 24. The second notch 2511 may be movably matched with the second connecting end 225 to limit and guide the engaging portion 251 and ensure the stability of the locking process.

[0137] A first limiting portion 223 may be formed on the seat body 22. The first limiting portion 223 may be formed as two strip-shaped protrusions which are parallel to each other and extend in the second direction (the up and down direction). The lock-in element 25 may be positioned between the two strip-shaped protrusions, so that the first limiting portion 223 may limit the moving direction of the lock-in element 25. The first limiting portion 223 may guide the lock-in element 25 to ensure the stability of movement and engagement. Two lock-in elements 25 may be respectively provided on the upper side and the lower side of the mounting portion 228, and each lock-in element 25 is respectively limited by the first limiting portion 223.

[0138] As shown in FIGS. 3 and 3 A, the first elastic portion 242 is formed to have two bending portions. As can be seen from FIGS. 3, 3 A and 5, when the buckle 100 is in a locked state and an unlocked state, a boundary point between the two bending portions of the first elastic portion 242 will move in the second direction. Alternatively, the first elastic portion 242 is formed to have one, three or four bending portions. The shape of the first elastic portion 242 listed above is only an example, and the specific structure of the first elastic portion 242 is not limited in the present application.

[0139] In the present application, the first direction may intersect the second direction. The term “intersect” means that the first direction and the second direction are not parallel to each other, and may be approximately perpendicular or perpendicular to each other.

[0140] A second embodiment of the present application will be described below. The same parts in the second embodiment as those in the first embodiment will be omitted.

[0141] Referring to FIGS. 10 and 11, in the second embodiment, the second connecting portion 23 may have only one through hole, but the present application is not limited to this. Alternatively, the second connecting portion 23 may have two through holes.

[0142] Referring to FIGS. 12 and 13, in the second embodiment, the pressing element 24 is integrally formed with the lock-in element 25. Alternatively, the pressing element 24 and the lock-in element 25 may be independent of each other and connected together. Specifically, the female buckle assembly 2 may have two pressing elements 24 and two lock-in elements 25. Either of the two pressing elements 24 may be integrally formed with one lock-in element 25. Each pressing element 24may include a pressing portion 241, a first elastic portion 242 and a connecting arm 245. Each lock-in element 25 may include an engaging portion 251. The connecting arm 245 extends in the first direction.

[0143] Referring to FIG. 12, the pressing portion 241 on the left side may be referred to as a first pressing portion, the pressing portion 241 on the right side may be referred to as a second pressing portion, the connecting arm 245 on the left side may be referred to as a first connecting arm (the first connecting arm is located above the locking portion 11), the connecting arm 245 on the right side may be referred to a second connecting arm (the second connecting arm is located below the locking portion 11), the engaging portion 251 on the left side may be referred to a second engaging portion, and the engaging portion 251 on the right side may be referred to a first engaging portion. The first connecting arm may connect the first pressing portion and the first engaging portion, and the second connecting arm may connect the second pressing portion and the second engaging portion. When the two pressing portions 241 are pressed, the two engaging portions 251 on opposite sides may be pushed to move away from the locking portion 11 by the two connecting arms 245 respectively.

[0144] A fixed end 229 may be formed on the seat body 22. A first end of the first elastic portion 242 is connected to the connecting arm 245, and a second end (a positioning end 2421) of the first elastic portion 242 is fixed to the fixed end 229. The first magnet 3 may be fixedly provided within the cover body 21.

[0145] An extension portion 2451 is formed at an end of the connecting arm 245 close to the pressing portion 241 connected with it. The extension portion 2451 may extend from the connecting arm 245 in the second direction and toward a direction away from the locking hole 226. The first elastic portion 242 is connected with the connecting arm 245 through the extension portion 2451, so that a first end of the first elastic portion 242 is connected to an end of the connecting arm 245 close to the pressing portion 241. That is, the first end of the first elastic portion 242 is connected to the extension portion 2451. Specifically, the first elastic portion 242 is connected to an end of the extension portion 2451 away from the connecting arm 245. Specifically, in this embodiment, there are two extension portions 2451, which are respectively provided on the two connecting arms 245 at the upper and lower sides and extend away from each other in the second direction. The fixed end 229 and the extension portion 2451 are provided opposite to each other in the first direction, that is, the extension portion 2451 is provided at the end of the connecting arm 245 close to the pressing portion241, and the fixed end 229 is provided on the seat body 22 close to a side of the connecting arm 245 connected with the lock-in element 25.

[0146] In this embodiment, the extension portion 2451 makes the projection of the pressing portion 241 along the first direction and the projection of the first elastic portion 242 along the first direction not overlap with each other, thereby reducing the arrangement space and further reducing the volume of the buckle 100. It should be noted that the projection of the first elastic portion 242 and the pressing portion 241 along the first direction means that the first elastic portion 242 and the pressing portion 241 are projected along the first direction onto the plane perpendicular to the first direction (that is, the plane where the second direction lies). The fixed end 229 is arranged opposite to the extension portion 2451, so that the first elastic portion 242 is arranged in the first direction, and the elastic action of the first elastic portion 242 may make the lock-in element 25 easier to keep in a locked position, so as to enhance the engagement strength between the engaging portion 251 and the male buckle assembly 1, and realize the small volume and high strength of the buckle 100.

[0147] Secondly, the extension portion 2451 has a position-limiting function, and the extension portion 2451 may abut against the seat body 22 so as to keep the pressing element 24 and the lock-in element 25 stable in the locked position shown in FIG. 12.

[0148] In other embodiments not shown, in addition to the position shown in FIG. 12, the extension portion 2451 may also be provided at an end of the connecting arm 245 close to the lock-in element 25, and the fixed end 229 may be provided on the seat body 22 close to the side wherein the connecting arm 245 is connected with the pressing portion 241. That is, directions of the extension portion 2451 and the direction of the fixed end 229 may be interchanged, and at this time, the first elastic portion 242 may be a tensile elastic element.

[0149] In this embodiment, as shown in FIG. 12, taking the pressing portion 241 on the left side as an example, the connecting arm 245 and the first elastic portion 242 connected with the pressing portion 241 are respectively provided on a side of the pressing portion 241 in the second direction, that is, the connecting arm 245 and the first elastic portion 242 are both provided on the upper side of the pressing portion 241 on the left side, and the present application is not limited to this. In other embodiments not shown, the first elastic portion 242 and the connecting arm 245 connected with the pressing portion 241 may be respectively provided on two opposite sides of the pressing portion 241 in the second direction. For example, the connecting arm 245 is provided on the upper side of thepressing portion 241, and the lower side of the pressing portion 241 may be connected with an end of the second elastic portion 253 through the extension portion 2451, and the other end of the second elastic portion 253 is connected with the fixed end 229.

[0150] Referring to FIGS. 12 and 14, a first limiting end 222a and a second limiting end 222b may be formed on the seat body 22. Specifically, two first limiting ends 222a and two second limiting ends 222b may be formed on the seat body 22. The first limiting end 222a and the second limiting end 222b may be located at inner sides of the two pressing portions 241 in the first direction, respectively.

[0151] The first limiting end 222a may extend inward in the first direction from an outer edge of the seat body 22. The second limiting end 222b may extend inward from the outer edge of the seat body 22 for a certain distance in the first direction, and then extend a certain distance in the second direction toward a direction close to the locking portion 11. The distance that the second limiting end 222b extends in the first direction may be longer than the distance that the first limiting end 222a extends in the first direction, but the present application is not limited to this.

[0152] The first limiting end 222a may be matched with the extension portion 2451. Specifically, an inner side of the first limiting end 222a in the first direction may abut against an outer side of the extension portion 2451 in the first direction, thereby preventing the first elastic portion 242 from pushing the pressing element 24 out of the cover body 21 and the seat body 22.

[0153] The second limiting end 222b may be matched with the pressing portion 241 and / or the connecting arm 245. Specifically, the second limiting end 222b includes a first limiting surface 222b 1, and the pressing portion 241 is matched with the first limiting surface 222b 1 for limiting the position; and / or, the second limiting end 222b includes a second limiting surface 222b2, and the connecting arm 245 is matched with the second limiting surface 222b2 for limiting the position. Referring to FIG. 12, a first limiting surface 222b 1 and a second limiting surface 222b2 may be formed on two sides of the second limiting end 222b in the first direction, the first limiting surface 222b 1 is provided on a side close to the pressing portion 241 in the first direction, and the second limiting surface 222b2 is provided on a side close to the connecting arm 245 in the first direction. Taking the pressing element 24 on the left side in FIG. 12 as an example, the pressing portion 241 is matched with the first limiting surface 222b 1 to limit the moving stroke of a side (the lower side in FIG. 12) of the pressing portion 241 in the first direction. A limiting inclined surface 2452 on the connecting arm 245 is matched with the second limiting surface 222b2 to limit the moving stroke of the other side (the upper side in FIG.12, that is, a side connected with the connecting arm 245 in the second direction) of the pressing portion 241 in the first direction. In some embodiments, only the first limiting surface 222b 1 may be provided, and the first limiting surface 222b 1 may abut against the inner side of the pressing portion 241 in the first direction, thereby limiting a maximum distance that the pressing portion 241 can be pressed. Alternatively, only the second limiting surface 222b2 may be provided, and the second limiting surface 222b2 may abut against the limiting inclined surface 2452 of the connecting arm 245, thereby limiting the maximum distance that the pressing portion 241 can be pressed. It can be understood that at least one of the first limiting surface 222b 1 and the second limiting surface 222b2 has an abutting function, which may limit the maximum distance that the pressing portion 241 can be pressed. Of course, when the first limiting surface 222b 1 and the second limiting surface 222b2 abut against the pressing portion 241 and the connecting arm 245 respectively, the forces on both sides of the pressing element 24 are balanced, thus having better running quality. The second limiting surface 222b2 may not only limit the connecting arm 245; in addition, the second limiting surface 222b2 may also avoid the connecting arm 245, so as to avoid interference with the connecting arm 245. In other embodiments not shown, the second limiting surface 222b2 may also be matched with an inclined surface on the engaging portion 251 to achieve limiting, that is, the limiting inclined surface 2452 may be provided on the engaging portion 251, and the present application is not limited to this.

[0154] Two first limiting ends 222a may be provided at the left upper part and the right lower part of the buckle 100, and two second limiting ends 222b may be provided at the left lower part and the right upper part of the buckle 100, but the present application is not limited to this. Alternatively, the two first limiting ends 222a may be provided at the left lower part and the right upper part of the buckle 100, and the two second limiting ends 222b may be provided at the left upper part and the right lower part of the buckle 100. Each pressing element 24 may be limited by one first limiting end 222a and one second limiting end 222b, so that both ends of each pressing element 24 moving in the first direction are limited, thereby preventing the pressing portion 241 from moving excessively in the first direction.

[0155] Referring to FIG. 14 and FIG. 15, when the pressing portion 241 is actuated inward (as shown by the solid arrow in FIG. 14), the two engaging portions 251 are pushed by the connecting arm 245 to leave the locking hole 226 and the locking slot 12 on the locking portion 11, respectively, so that the male buckle assembly 1 is disengaged from the female buckle assembly 2. In this process,the first elastic portion 242 is further compressed in the first direction (as shown by the dashed arrow in FIG. 14). When the pressing portion 241 is released, the elastic force of the first elastic portion 242 pushes the connecting arm 245 back, so that the two engaging portions 251 enter the locking hole 226 again, that is, the pressing element 24 and the lock-in element 25 move from the unlocked state shown in FIG. 14 to the locked state shown in FIG. 12.

[0156] Referring to FIGS. 12 and 16, a first notch 2411 may be formed on each of the two engaging portions 251. A first protrusion 224a matching with the first notch 2411 may be formed on the seat body 22. The first notch 2411 and the first protrusion 224a extend in the first direction to ensure the stability of the pressing element 24 and the lock-in element 25 during movement.

[0157] A third embodiment of the present application will be described below. The same parts of the third embodiment as those of the second embodiment will be omitted.

[0158] Referring to FIGS. 17 and 18, in the third embodiment, different from the second embodiment, both ends of the first elastic portion 242 are connected to the engaging portion 251 and the pressing portion 241, respectively, to apply a pushing force. One engaging portion 251 is connected to one pressing portion 241 through the first elastic portion 242, and the engaging portion 251 is connected to the other pressing portion 241 through one connecting arm 245. In this way, the two pressing portions 241, the two connecting arms 245 and the two engaging portions 251 are formed as an integrated structure through the first elastic portion 242. Alternatively, the two pressing portions 241, the two connecting arms 245, the two engaging portions 251 and the first elastic portion 242 may be components that are respectively independent of each other. An end of each pressing portion 241 may have a clamping end 244 protruding upward and / or downward, respectively. A limiting end 222 may be formed on the seat body 22. The limiting end 222 may protrude inward from an outer periphery of the seat body 22. The limiting end 222 is located at an outer side of the clamping end 244 (that is, the clamping end 244 is located at an inner side of the limiting end 222), thereby limiting a limit distance for the pressing portion 241 to move outward and enabling the pressing portion 241 to be stably stopped.

[0159] In this embodiment, both ends of each pressing portion 241 in the second direction have clamping ends 244 (that is, there are four clamping ends 244 in total), and correspondingly, four limiting ends 222 may be formed on the seat body 22.

[0160] In another embodiment, an end of each pressing portion 241 in the second direction has aclamping end 244 (that is, there are two clamping ends 244 in total), and correspondingly, two limiting ends 222 may be formed on the seat body 22. The number of clamping ends is not limited to this.

[0161] Specifically, the pressing element 24 may include two pressing portions 241 and two connecting arms 245 respectively located at two sides of the locking hole 226, and the lock-in element 25 may include two engaging portions 251 respectively located at two sides of the locking hole 226. As shown in FIG. 17, a pressing portion 241 on the left side may be referred to a first pressing portion, a pressing portion 241 on the right side may be referred to a second pressing portion, a connecting arm 245 on the left side may be referred to a first connecting arm, a connecting arm 245 on the right side may be referred to a second connecting arm, an engaging portion 251 on the left side may be referred to a second engaging portion, and an engaging portion 251 on the right side may be referred to a first engaging portion. The first connecting arm may connect the first pressing portion and the first engaging portion, and the second connecting arm may connect the second pressing portion and the second engaging portion. The first elastic portion 242 may be located between the first pressing portion and the second engaging portion, and / or between the second pressing portion and the first engaging portion.

[0162] Referring to FIG. 18, a first notch 2411 may be formed on each of the two engaging portions 251. A first protrusion 224a (not shown) matched with the first notch 2411 may be formed on the seat body 22. The first notch 2411 and the first protrusion 224a extend in the first direction to ensure the stability of the pressing element 24 and the lock-in element 25 during the movement process.

[0163] Specifically, an end of the first elastic portion 242 may be connected with the engaging portion 251, and the other end of the first elastic portion 242 may be provided on the body of the pressing portion 241 or at the clamping end 244, so that the projection of the first elastic portion 242 and the projection of the pressing portion 241 along the first direction do not overlap, thereby improving the space utilization rate. It should be noted that the projection of the first elastic portion 242 and the pressing portion 241 along the first direction means that the first elastic portion 242 and the pressing portion 241 are projected along the first direction onto the plane perpendicular to the first direction (that is, the plane where the second direction lies).

[0164] In other embodiments not shown, an end of the first elastic portion 242 may be connected with the connecting arm 245, and the other end of the first elastic portion 242 may be connected withT1the body of the pressing portion 241, or provided at the clamping end 244.

[0165] A fourth embodiment of the present application will be described below. The same parts of the fourth embodiment as those of the third embodiment will be omitted.

[0166] Referring to FIGS. 19 and 20, the pressing element 24 is integrally formed with the lock-in element 25. Alternatively, the pressing element 24 and the lock-in element 25 may be components independent of each other and may be connected together. The pressing element 24 is provided with a connecting arm 245 in the first direction. The pressing portion 241 and the lock-in element 25 are connected to each other through the connecting arm 245. There are two pressing elements 24, and each pressing element 24 is provided with one connecting arm 245, and the two connecting arms 245 are located on the upper and lower sides of the two pressing portions 241. The lock-in element 25 may be composed of two engaging portions 251. The pressing portion 241 on the left side of the locking portion 11 is connected with the engaging portion 251 on the right side of the locking portion 11 through the connecting arm 245 above the locking portion 11, and the pressing portion 241 on the right side of the locking portion 11 is connected with the engaging portion 251 on the left side of the locking portion 11 through the connecting arm 245 below the locking portion 11. When the two pressing portions 241 are pressed, the two engaging portions 251 on opposite sides may be pushed to move away from the locking portion 11 through the connecting arm 245. In the fourth embodiment, the connecting arm 245 may be L-shaped.

[0167] In the fourth embodiment, both ends of each of the two pressing portions 241 have protruding clamping ends 244, respectively. The first elastic portion 242 is located between two clamping ends 244 on the same side of the two pressing portions 241 in the second direction, and both ends of the first elastic portion 242 are connected to the two clamping ends 244 respectively. The first elastic portion 242 may exert a pushing force on the clamping end 244. A plurality of limiting ends 222 may be formed on the seat body 22, and the clamping end 244 may be located at the inner side of the plurality of limiting ends 222. The outer side of the clamping end 244 may abut against the limiting end 222 to prevent the pressing portion 241 from being pushed out of the seat body 22 by the first elastic portion 242. The limiting end 222 may be matched with the clamping end 244 to facilitate the quick installation of the pressing element 24 and limit the movable stroke. In this embodiment, the first elastic portion 242 may have a bend, but the present application is not limited to this.

[0168] The setting of the clamping end 244 may not only play a limiting function, and the clampingend 244 extending toward a direction away from the pressing portion 241 along the second direction also makes the projection of the first elastic portion 242 and the projection of the pressing portion 241 along the first direction not overlap, thus reducing the volume of the buckle 100. It should be noted that the projection of the first elastic portion 242 and the pressing portion 241 along the first direction means that the first elastic portion 242 and the pressing portion 241 are projected along the first direction onto the plane perpendicular to the first direction (that is, the plane where the second direction lies).

[0169] A fifth embodiment of the present application will be described below. The same parts of the fifth embodiment as those of the fourth embodiment will be omitted.

[0170] Referring to FIG. 23, the pressing element 24 is integrally formed with the lock-in element 25. Alternatively, the pressing element 24 and the lock-in element 25 may be components independent of each other and may be connected together. The pressing element 24 is provided with a connecting arm 245 in the first direction. The pressing portion 241 and the lock-in element 25 are connected to each other through the connecting arm 245. There are two pressing elements 24, and each pressing element 24 is provided with one connecting arm 245, and the two connecting arms 245 are located on the upper and lower sides of the two pressing portions 241. The lock-in element 25 may be composed of two engaging portions 251. The pressing portion 241 on the left side of the locking portion 11 is connected with the engaging portion 251 on the right side of the locking portion 11 through a connecting arm 245 above the locking portion 11, and the pressing portion 241 on the right side of the locking portion 11 is connected with the engaging portion 251 on the left side of the locking portion 11 through a connecting arm 245 below the locking portion 11. When the two pressing portions 241 are pressed, the two engaging portions 251 on opposite sides may be pushed to move toward a direction away from the locking portion 11 through the connecting arm 245.

[0171] The first elastic portion 242 may be respectively provided on the upper side and the lower side of the two pressing portions 241 and located between the two pressing portions 241. An upper end and a lower end of each pressing portion 241 may form a clamping end 244. The clamping end 244 extends away from the pressing portion 241 in the second direction. The first elastic portion 242 extends in a bending manner in the first direction to have elasticity. Two ends of the first elastic portion 242 are respectively connected with one clamping end 244. The first elastic portion 242 may apply an outward pushing force in the first direction to the two pressing portions 241. In thisembodiment, the two pressing portions 241, the first elastic portion 242, the two engaging ends 244 and the two engaging portions 251 may be integrally formed. In another embodiment, the two pressing portions 241, the first elastic portion 242, the two clamping ends 244 and the two engaging portions 251 can be components independent of each other.

[0172] Since the clamping end 244 extends away from the pressing portion 241 in the second direction, and the first elastic portion 242 is provided between the two clamping ends 244 in the first direction, the projections of the first elastic portion 242 and the pressing portion 241 along the first direction do not overlap with each other, thus reducing the volume of the buckle 100. It should be noted that the projection of the first elastic portion 242 and the pressing portion 241 along the first direction means that the first elastic portion 242 and the pressing portion 241 are projected along the first direction onto the plane perpendicular to the first direction (that is, the plane where the second direction lies).

[0173] Referring to FIGS. 21 to 26, in the fifth embodiment, a first notch 2411 may be formed on each of the two engaging portions 251. A second notch 2511 may be formed on the first elastic portion 242. A first protrusion 224a matched with the first notch 2411 and a second protrusion 225a matched with the second notch 2511 may be formed on the seat body 22. The second notch 2511 and / or the second protrusion 225a may be called as a first elastic portion limiting structure. The first elastic portion 242 is limited to the seat body 22 by the first elastic portion limiting structure to ensure the stationarity in the deformation. It can be understood that the first elastic portion limiting structure may be other structures other than the second notch 2511 and the second protrusion 225a. The directions of the first protrusion 224a and the second protrusion 225a intersect each other. The first protrusion 224a extends in the first direction to ensure the stability of the engaging portion 251 during the horizontal movement. The second protrusion 225a extends in the second direction to ensure the stability of the first elastic portion 242 during the deformation of the vertical movement. As shown in FIG. 23, in the fifth embodiment, the first elastic portion 242 may have two bending portions, but the application is not limited to this.

[0174] A second limiting portion 223a may be formed on the seat body 22. The second limiting portion 223a is formed as two strip-shaped protrusions which are parallel to each other and extend in the first direction to limit the moving direction of the two connecting arms 245, that is, the two connecting arms 245 and the two pressing portions 241 can only move in the first direction. Thesecond limiting portion 223a may be connected with the second protrusion 225a. As shown in FIG. 26, the second limiting portion 223a and the second protrusion 225a may be connected with each other to form a T-shaped arrangement. Referring to FIG. 24, the second limiting portion 223a may limit a compressed state of the first elastic portion 242 by abutting against the first elastic portion 242.

[0175] The cover body 21 and the seat body 22 may be engaged and fixed with each other. Specifically, as shown in FIGS. 22 and 26, an elastic finger 202 may be formed on the cover body 21. A clamping slot 201 may be formed on the seat body 22. The elastic fingers 202 may cooperate with the clamping slot 201 to fix the cover body 21 and the seat body 22 to each other.

[0176] In another embodiment, which is not shown, the seat body 22 and the cover body 21 may be respectively formed with a clamping slot 201 and an elastic finger 202. In this way, the clamping slot 201 and the elastic finger 202 on the cover body 21 may be respectively matched with the elastic finger 202 and the clamping slot 201 on the seat body 22 to fix the cover body 21 and the seat body 22 to each other.

[0177] The above structures of the cover body 21 and the seat body 22 may be applied to other embodiments, but the present application does not limit the connection mode of the cover body 21 and the seat body 22.

[0178] A sixth embodiment of the present application will be described below. The same parts of the sixth embodiment as those of the fifth embodiment will be omitted.

[0179] Referring to FIG. 28, the buckle 100 may include a male buckle assembly 1 and a female buckle assembly 2 (see FIG. 2 for the overall structure of the female buckle assembly 2). The female buckle assembly 2 may include a cover body 21, a seat body 22, a mounting portion 228 and a pressing element 24. A second connecting portion 23 for being connected with the webbing can be formed on the seat body 22. The lock-in element 25 is integrally formed on the pressing element 24 (see FIG. 29). Alternatively, the pressing element 24 and the lock-in element 25 may be components independent of each other and may be connected together.

[0180] Referring to FIG. 32, a first magnet receiving portion 211 may be formed on the cover body 21. The first magnet receiving portion 211 may be formed in a substantially cylindrical shape. A convex rib 212 may be formed on the outer side of the first magnet receiving portion 211. The convex rib 212 may extend in the circumferential direction of the first magnet receiving portion 211. The convex rib 212 may be matched with the mounting portion 228, so that the mounting portion 228 maybe firmly buckled on the outer side of the first magnet receiving portion 211 to jointly form a space for receiving the first magnet 3. An extending length of the convex rib 212 may not exceed half of the circumference of the first magnet receiving portion 211, but the present application is not limited to this. Two convex ribs 212 may be symmetrically formed on the first magnet receiving portion 211, but the present application is not limited to this. A rib 213 may also be formed on the outer side of the first magnet receiving portion 211. The rib 213 may extend in an axial direction of the first magnet receiving portion 211. The rib 213 may be used to guide the process of buckling the mounting portion 228 to the first magnet receiving portion 211. Two ribs 213 may be symmetrically formed on the first magnet receiving portion 211, but the present application is not limited to this.

[0181] With continued reference to FIG. 28, the mounting portion 228 may be matched with the cover body 21 to receive and seal the first magnet 3. The mounting portion 228 may be formed in a substantially circular shape. The mounting portion 228 may be formed with a fourth limiting portion 2281 and a concave portion 2282. The fourth limiting portion 2281 may be formed as an arm extending radially outward from the outer surface of the mounting portion 228. The fourth limiting portion 2281 may extend linearly. The fourth limiting portion 2281 may limit the movement of the engaging portion 251 (described in detail below). The concave portion 2282 may be formed as a depression radially outward from the inner surface of the mounting portion 228. The mounting portion 228 may be formed with two fourth limiting portions 2281 opposite to each other, but the present application is not limited thereto. The mounting portion 228 may be formed with two concave portions 2282 opposite to each other, but the present application is not limited thereto. When the cover body 21 is matched with the mounting portion 228, each rib 213 may be inserted into the corresponding concave portion 2282, so that the concave portion 2282 guides the process of combining the mounting portion 228 with the cover body 21. Due to the cooperation between the concave portion 2282 and the rib 213, an extending direction of the fourth limiting portion 2281 after the mounting portion 228 is mounted to the cover body 21 may be determined.

[0182] Although in this embodiment, the fourth limiting portion 2281 is provided on the mounting portion 228, in another embodiment, the fourth limiting portion 2281 may be provided on the cover body 21.

[0183] Referring to FIGS. 27 and 28, the fourth limiting portion 2281 extends outward from both sides of the mounting portion 228 in the horizontal direction (e.g., the first direction). The fourthlimiting portion 2281 may be located above the engaging portion 251 to limit the movement of the engaging portion 251 in the vertical direction (the third direction), so as to improve the stability of the engagement and locking between the male buckle assembly 1 and the female buckle assembly 2.

[0184] Referring to FIGS. 29 and 30, the pressing element 24 may be provided with a connecting arm 245 in the first direction. The pressing portion 241 and the lock-in element 25 are connected to each other through the connecting arm 245. There may be two pressing elements 24, and each pressing element 24 is respectively provided with one connecting arm 245, and the two connecting arms 245 are respectively located at the upper and lower sides of the two pressing portions 241 (see FIG. 29). Referring to FIG. 29, the lock-in element 25 may be composed of two engaging portions 251. The pressing portion 241 on the left side of the locking portion 11 is connected with the engaging portion 251 on the right side of the locking portion 11 through a connecting arm 245 above the locking portion 11, and the pressing portion 241 on the right side of the locking portion 11 is connected with the engaging portion 251 on the left side of the locking portion 11 through a connecting arm 245 below the locking portion 11. When the two pressing portions 241 are pressed, the two engaging portions 251 on opposite sides may be pushed to move away from the locking portion 11 through the connecting arm 245.

[0185] The first elastic portion 242 may be respectively provided on the upper side and the lower side of the two pressing portions 241 and located between the two pressing portions 241. The upper end and the lower end of each pressing portion 241 may form a clamping end 244. The clamping end 244 extends away from the pressing portion 241 in the second direction. The first elastic portion 242 extends in a bending manner in the first direction to have elasticity. Two ends of the first elastic portion 242 are respectively connected with a clamping end 244. The first elastic portion 242 may be formed in a shape similar to “M”. That is, from one end to the other end of the first elastic portion 242, it is bent three times (or in other words, two bending portions 2423 are formed). One of the first elastic portion 242 and the seat body 22 may be provided with a positioning post 2422. The other one of the first elastic portion 242 and the seat body 22 may be provided with a positioning hole 223b. The positioning post 2422 and / or the positioning hole 223b may be called as a first elastic portion limiting structure. The first elastic portion 242 is limited to the seat body 22 by the first elastic portion limiting structure to ensure the stationarity in the deformation. It can be understood that the first elastic portion limiting structure may be other structures other than the positioning post 2422 and thepositioning hole 223b. The positioning post 2422 may be located within the positioning hole 223b. See FIGS. 29 and 30, the positioning post 2422 may be formed at the second bend of the first elastic portion 242. The seat body 22 may be provided with a positioning hole 223b. The positioning post 2422 may be located at the middle position in the length of the first elastic portion 242, so that there is one bending portion 2423 on each side of the positioning post 2422. The positioning post 2422 may extend downward (downward in the vertical direction shown in FIG. 27) to exceed the dimension of the first elastic portion 242 in the vertical direction. It should be noted that in other embodiments not shown, from one end of the first elastic portion 242 to the other end of the first elastic portion 242, the first elastic portion may be bent multiple times (for example, more than three times), and the present application does not limit to this. Optionally, a positioning post 2422 or a positioning hole 223b may be formed at the bent positions of the first elastic portion 242. The number of the positioning posts 2422 or positioning holes 223b is not limited, and one, two or more of them may be set according to the number of bends.

[0186] Referring to FIG. 31, a locking hole 226 may be formed in the seat body 22. A second limiting portion 223a may be formed on the seat body 22. The second limiting portion 223a may be formed as two strip-shaped protrusions. The specific structure of the second limiting portion 223a may be referred to the description in the fifth embodiment. A positioning hole 223b may be formed at a side of the second limiting portion 223a away from the locking hole 226. Two positioning holes 223b may be formed in the seat body 22. Each positioning post 2422 may be inserted into a corresponding positioning hole 223b (see FIGS. 30 and 31). The positioning hole 223b may restrict the movement of the positioning post 2422, thus making the elastic deformation process of the first elastic portion 242 more stable. In other words, since a middle part of the first elastic portion 242 is fixedly connected to the seat body 22, the stability of elastic support of the pressing portions 241 at both sides in the horizontal direction may be ensured.

[0187] Referring to FIGS. 29 and 31, a third limiting portion 223c may be further formed on the seat body 22. The third limiting portion 223c may be parallel to the second limiting portion 223a. The third limiting portion 223c is located between the second limiting portion 223a and the locking hole 226. A distance between the third limiting portion 223c and the second limiting portion 223a may correspond to a width of the connecting arm 245. When the pressing portion 241 is pressed, the connecting arm 245 moves between the third limiting portion 223c and the second limiting portion223a. The limiting effect of the third limiting portion 223c and the second limiting portion 223a on the connecting arm 245 makes the movement of the connecting arm 245 more stable and prevents the connecting arm 245 from waggling when it is engaged. Third limiting portions 223c may be formed at upper and lower sides of the locking hole 226. A length of the third limiting portion 223c in the first direction may be smaller than a length of the second limiting portion 223a in the first direction, but the present application is not limited to this. The third limiting portion 223c may be provided offset in the first direction relative to the second limiting portion 223a to avoid interfering with the position wherein the engaging portion 251 is connected with the connecting arm 245. The seat body 22 and the fifth limiting portion 214 jointly limit the movement of the connecting arm 245 in the vertical direction, and the second limiting portion 223a and the third limiting portion 223c jointly limit the movement of the connecting arm 245 in the second direction, so that the connecting arm 245 can move in the first direction more smoothly, and then the engaging portion 251 can be pushed to unlock more smoothly when the pressing portion 241 is pressed. For other structures of the seat body 22, refer to the fifth embodiment.

[0188] In the present application, the first direction and the second direction are perpendicular to each other and jointly define a horizontal plane (that is, both the first direction and the second direction belong to the horizontal direction), and the vertical direction (the third direction) is perpendicular to the horizontal plane, but the present application is not limited to this.

[0189] Referring to FIGS. 30 and 33, the pressing portion 241 may have an elongated groove 2413. The elongated groove 2413 may have a third notch 2412. Both the elongated groove 2413 and the third notch 2412 may be formed at the inner side of the pressing portion 241 (a side facing the other pressing portion 241). The size of the elongated groove 2413 in the second direction is larger than that of the third notch 2412 in the second direction. Bottoms of the elongated groove 2413 and the third notch 2412 may have a stopper 2414. The elongated groove 2413 may cooperate with the engaging portion 251, thus providing an escape space for the unlocking of the engaging portion 251. Each fourth limiting portion 2281 may be inserted into a corresponding third notch 2412, so that the stroke of the pressing portion 241 moving in the first direction is limited by the stopper 2414. The third notch 2412 may cooperate with the fourth limiting portion 2281 to prevent interference with the movement of the pressing element 24.

[0190] Referring to FIGS. 32 and 34, a fifth limiting portion 214 may be formed on the femalebuckle assembly 2 (specifically, e.g., the cover body 21). The fifth limiting portion 214 may extend in the vertical direction (the third direction) to prevent the connecting arm 245 from moving in the vertical direction, thus making the movement of the connecting arm 245 in the horizontal direction (specifically, the first direction) more stable. Two fifth limiting portions 214 may be symmetrically formed on the cover body 21. The two fifth limiting portions 214 may be located at two sides of the magnet receiving portion 211, respectively. The fifth limiting portion 214 may have an annular shape, and a reinforcing rib may be provided in the annular shape, but the present application is not limited to this.

[0191] A seventh embodiment of the present application will be described below.

[0192] Referring to FIGS. 35 to 39, the buckle 100s of the seventh embodiment of the present application may include a male buckle assembly Is and a female buckle assembly 2s. The male buckle assembly Is may be partially inserted into the female buckle assembly 2s to be locked by the female buckle assembly 2s. The male buckle assembly Is may be connected with a belt 5s. The belt 5s may fix the male buckle assembly Is to a corresponding part of an infant carrier, a restraint strap of a baby stroller, a restraint strap of a dining chair, a backpack and other possible articles. The male buckle assembly Is may also have a protruding locking portion Ils (see FIG. 44). As shown in FIG. 44, an engaging slot 12s may be formed in the locking portion Ils. The engaging slot 12s may surround a columnar locking portion Ils for one circle, but it is not limited thereto. Although it is shown in FIG. 44 that the male buckle assembly Is is formed in a circular shape, in an embodiment not shown, the male buckle assembly Is may be formed in a rectangular shape or other shapes. The female buckle assembly 2s may have a locking hole 226s (see FIG. 37). The locking portion Ils may be inserted into the locking hole 226s in a third direction Z, so that the male buckle assembly Is and the female buckle assembly 2s are connected with each other.

[0193] Referring to FIGS. 35, 37 and 41, the female buckle assembly 2s may include a cover body 21s, a seat body 22s, a second connecting portion 23 s, a pressing element 24s and a lock-in element 25 s which are combined with each other.

[0194] The cover body 21s and the seat body 22s may be fixed to each other and at least partially surround the pressing element 24s and the lock-in element 25 s. Specifically, the cover body 21s and the seat body 22s may be combined with each other in the third direction Z. In the present application, the third direction Z may be perpendicular to the first direction X and the second direction Y. The sizeof the cover body 21s in the third direction Z may be smaller than the size of the seat body 22s in the third direction Z. The cover body 21s and the seat body 22s may be combined with each other by ultrasonic welding (described in detail below). Ultrasonic welding is a process of combining two or more objects with each other through high-frequency vibration.

[0195] A side of the female buckle assembly 2s may have a second connecting portion 23 s. The second connecting portion 23s may be connected with a webbing (not shown).

[0196] The pressing element 24s may include a pressing portion 241s, a first elastic portion 242s and a connecting arm 245s. Each side of the female buckle assembly 2s may have one pressing portion 241s respectively. The two pressing portions 241s may be symmetrically provided on both sides of the seat body 22s in the first direction X, and exposed to the outside of a space surrounded by the cover body 21s and the seat body 22s. The pressing portion 241s is used to operate the locking and unlocking of the male buckle assembly Is and the female buckle assembly 2s. Openings for the pressing portion 241s to pass through may be formed on both sides of the cover body 21s and the seat body 22s.

[0197] The pressing element 24s may be linked with the lock-in element 25s. The pressing element 24s may actuate the lock-in element 25 s, so that the lock-in element 25 s can operatively engage the locking portion 1 Is of the male buckle assembly Is. The lock-in element 25 s may be engaged with the locking portion Ils at the locking hole 226s. The pressing portion 241s may be pressed in the first direction X to push the lock-in element 25 s out of engagement with the locking portion Ils in the first direction X. Alternatively, the pressing element 24s and the lock-in element 25s are integrally formed, but the present application is not limited thereto. Optionally, the pressing elements 24s and the lock-in elements 25 s may be components independent of each other and may be connected together.

[0198] The pressing element 24s may be integrally formed. Alternatively, the pressing element 24s may be composed of multiple components that are independent of each other. Two sides of the two pressing portions 241s of the pressing element 24s in the second direction Y are respectively connected with the two ends of the two first elastic portions 242s, so that the two pressing portions 241s and the two first elastic portions 242s form a ring shape, but the present application is not limited to this. Projections of the first elastic portion 242s and the pressing portion 241s along the first direction X do not overlap with each other. It should be noted that the projection of the first elastic portion 242s and the pressing portion 241s along the first direction means that the first elastic portion242s and the pressing portion 241s are projected along the first direction onto the plane perpendicular to the first direction (that is, the plane where the second direction lies). The first elastic portion 242s may have a curved shape, and provide an elastic force to keep the two pressing portions 241s away from each other through elastic deformation. Two connecting arms 245s respectively extend out of one side of the two pressing portions 241s in the first direction X. Each connecting arm 245s is connected to one lock-in element 25s at an end away from the pressing portion 241s. The two connecting arms 245 s extend inside the two first elastic portions 242s. The inner side of the lock-in element 25s may be rounded, so as to lock the cylindrical locking portion Ils.

[0199] In other embodiments, the pressing element 24s may include one pressing portion 241s and / or one connecting arm 245 s. In other embodiments, the female buckle assembly 2s may include one lock-in element 25s. In other embodiments, the pressing element 24s may include one first elastic portion 242s.

[0200] The first elastic portion 242s may have two bending portions 2423 s. There may be a positioning post 2422s between the two bending portions 2423 s. Specifically, the first elastic portion 242s may be composed of two bending portions 2423 s and one positioning post 2422s. The first elastic portion 242s may be formed in a shape similar to the letter “M”, but the present application is not limited thereto.

[0201] Referring to FIGS. 40 and 43, a first limiting portion 223as may be formed on the seat body 22s. The first limiting portion 223as may be formed as two strip-shaped protrusions. The two strip-shaped protrusions are parallel to each other and extend in the first direction X to limit the moving direction of the two connecting arms 245 s, that is, the two connecting arms 245 s and the two pressing portions 241s may only move in the first direction X. The first limiting portion 223as may limit the compressed state of the first elastic portion 242s by abutting against the first elastic portion 242s. A positioning hole 223bs may be formed at a side of the first limiting portion 223as away from the locking hole 226s. Two positioning holes 223bs may be formed on the seat body 22s. Each positioning post 2422s may extend along the third direction Z and be inserted into a corresponding positioning hole 223bs along a side of the third direction Z (see FIGS. 40 and 41). The positioning hole 223bs may restrict the movement of the positioning post 2422s, thus making the elastic deformation process of the first elastic portion 242s more stable. In other words, since the middle part of the first elastic portion 242s is fixedly connected to the seat body 22s, the stability of elasticsupport of the pressing portions 241s at both sides in the horizontal plane (the plane formed by the first direction X and the second direction Y) can be ensured.

[0202] A second limiting portion 223cs may also be formed on the seat body 22s. The second limiting portion 223cs may be parallel to the first limiting portion 223as. The second limiting portion 223cs may be located at an edge of the locking hole 226s. A distance between the second limiting portion 223cs and the first limiting portion 223as may correspond to a width of the connecting arm 245s. When the pressing portion 241s is pressed, the connecting arm 245s slides between the second limiting portion 223cs and the first limiting portion 223as. The limiting action of the second limiting portion 223cs and the first limiting portion 223as on the connecting arm 245s makes the movement of the connecting arm 245s more stable. Two second limiting portions 223cs may be respectively formed at both sides of the locking hole 226s in the second direction Y. A length of the second limiting portion 223cs in the first direction X may be smaller than a length of the first limiting portion 223as in the first direction X, but the present application is not limited to this. The second limiting portion 223cs may be provided offset in the first direction X relative to the first limiting portion 223as to avoid interfering with a position wherein the engaging element 25 s is connected with the connecting arm 245s. The protrusion 224as may be formed on two sides of the locking hole 226s in the first direction X, respectively. The protrusion 224as may be parallel to the second limiting portion 223cs. The protrusion 224as may cooperate with the lock-in element 25s to guide the movement of the lock-in element 25s in the first direction X.

[0203] Referring to FIGS. 40 and 42, a protruding connecting post 227s may be formed on the inner side of the seat body 22s. A protruding connecting cylinder 215s may be formed on the inner side of the cover body 21s. In another embodiment, a protruding connecting cylinder 215s may be formed on the inner side of the seat body 22s, and a protruding connecting post 227s may be formed on the inner side of the cover body 21s. When the seat body 22s is combined with the cover body 21s, the connecting post 227s is inserted into the connecting cylinder 215s, and then the connecting post 227s and the connecting cylinder 215s are fixed together by ultrasonic welding. The ultrasonic welding may be formed on the connecting post 227s and the connecting cylinder 215s. Alternatively, the ultrasonic welding may also be formed in an area around the connecting post 227s and the connecting cylinder 215s, for example, may be formed in a circumferential edge area wherein the seat body 22s and the cover body 21s are matched, and the present application is not limited to the setting positiondescribed in this case.

[0204] By ultrasonic welding, a gap between the seat body 22s and the cover body 21s may be reduced. Ultrasonic welding may ensure that when a torque of 100 N is applied to the buckle 100, there will be no opening larger than 0.5 mm.

[0205] In one embodiment, the seat body 22s has connecting posts 227s at both sides in the second direction Y, respectively. Specifically, the seat body 22s may have two connecting posts 227s. The cover body 21s may have two connecting cylinders 215s corresponding to two connecting posts. Two connecting posts 227s are respectively formed on both sides of the lock-in element 25s in the second direction Y. Accordingly, two connecting cylinders 215s are formed on both sides of the lock-in element 25 s in the second direction Y, respectively.

[0206] Referring to FIG. 42, a first magnet receiving portion 211s may be formed on the cover body 21s. The first magnet receiving portion 211s may be formed in a substantially cylindrical shape. A convex rib 212s may be formed on the outer side of the first magnet receiving portion 211s. The convex rib 212s may extend in a circumferential direction of the first magnet receiving portion 211s. The first magnet receiving portion 211s may be used to receive a magnet. An extended length of the convex rib 212s may not exceed half of the circumference of the first magnet receiving portion 211s, but the present application is not limited to this. Two convex ribs 212s may be symmetrically formed on the first magnet receiving portion 211s, but the present application is not limited to this. A rib 213s may also be formed on the outer side of the first magnet receiving portion 211s. The rib 213s may extend in the axial direction of the first magnet receiving portion 211s. Two ribs 213s may be symmetrically formed on the first magnet receiving portion 211s, but the present application is not limited to this.

[0207] A fifth limiting portion 214s may be formed on the cover body 21s. The fifth limiting portion 214s may extend in the third direction Z to prevent the connecting arm 245 s from moving in the third direction Z, thus making the movement of the connecting arm 245 s in the first direction X more stable. Two fifth limiting portions 214s may be symmetrically formed on the cover body 21s. The two fifth limiting portions 214s may be located at two sides of the first magnet receiving portion 211s in the second direction Y, respectively. The fifth limiting portion 214s may have an annular shape, and a reinforcing rib 219s may be provided in the annular shape, but the present application is not limited to this.

[0208] Referring to FIGS. 42 and 43, one of the cover body 21s and the seat body 22s may have an elastic finger (snap arm) 218s, and the other of the cover body 21s and the seat body 22s may have a clamping slot 228s. In this embodiment, the cover body 21s may have the elastic finger 218s, and the seat body 22s may have the clamping slot 228s. In another embodiment, the cover body 21s may have the clamping slot 228s, and the seat body 22s may have the elastic finger 218s. The elastic finger 218s is matched with the clamping slot 228s to make the cover body 21s engage with the seat body 22s or to provide at least a part of the bonding force between the cover body 21s and the seat body 22s. Optionally, the elastic finger 218s is ultrasonically welded with the clamping slot 228s. The cover body 21s may have four elastic fingers 218s, and the seat body 22s may correspondingly have four snap holes 228s, but the present application is not limited to this.

[0209] The cover body 21s may have edge docking portions 217s at both ends in the second direction Y, respectively. That is, the edge docking portion 217s is formed at an outer peripheral edge of the cover body 21s. The edge docking portion 217s may be shaped as a long strip extending in the first direction X, but the present application is not limited thereto. Alternatively, the edge docking portion 217s is ultrasonically welded with an outer peripheral edge of the seat body 22s.

[0210] The cover body 21s may have an inner docking portion 216s at a position corresponding to the positioning post 2422s. That is, both sides of the first magnet receiving portion 211s in the second direction Y respectively have one inner docking portion 216s. The position of the docking portion 216s corresponds to the position of the positioning post 2422s, and the butting and matching of the two portions may make the positioning post 2422s better match with the first limiting portion 223as, so as to limit the movement of the positioning post 2422s in the third direction Z, prevent the positioning post 2422s from disengaging from the first limiting portion 223as, and enhance the strength of the cover body 21s. Alternatively, a side of each positioning post 2422s facing the cover body 21s in the third direction Z may be ultrasonically welded with the inner docking portion 216s, and / or the positioning post 2422s may be ultrasonically welded with the first limiting portion 223as.

[0211] When it is necessary to lock the male buckle assembly Is and the female buckle assembly 2s, the male buckle assembly Is is inserted into the female buckle assembly 2s in the third direction Z, so that the locking portion Ils enters into the locking hole 226s. When the locking portion Ils enters into the locking hole 226s, the movement of the locking portion Ils in the third direction Z pushes the lock-in element 25 s to move to both sides in the first direction X, thereby allowing the locking portionIls to further enter into the locking hole 226s. Then, under the elastic force of the first elastic portion 242s, the lock-in element 25 s returns to a position wherein it has not been pushed, and enters into an engaging slot on the locking portion Ils, thereby realizing locking. That is, the first elastic portion 242s may provide an elastic force to make the lock-in element 25s tend to be locked with the male buckle assembly Is.

[0212] When it is necessary to unlock the male buckle assembly Is and the female buckle assembly 2s, the two pressing portions 241s are pressed at the same time, so that the lock-in element 25s moves to both sides in the first direction X and leaves the engaging slot 12s on the locking portion Ils. Then, the male buckle assembly Is is moved to leave the locking hole 226s in the third direction Z, so that the male buckle assembly Is is separated from the female buckle assembly 2s.

[0213] An eighth embodiment of the present application will be described below.

[0214] Referring to FIGS. 45 to 47, the buckle 100s of the eighth embodiment of the present application may include a male buckle assembly Is and a female buckle assembly 2s. The male buckle assembly Is may be partially inserted into the female buckle assembly 2s to be locked by the female buckle assembly 2s. The male buckle assembly Is may be connected with a belt 5s. The belt 5s may fix the male buckle assembly Is to the corresponding part of the infant carrier, the restraint strap of the baby stroller, the restraint strap of the dining chair, the backpack and other possible articles.

[0215] Referring to FIGS. 45 and 48, the female buckle assembly 2s may include a cover body 21s, a seat body 22s, a second connecting portion 23s, a pressing element 24s (refer to FIG. 41) and a lock-in element 25 s which are combined with each other.

[0216] Referring to FIGS. 47 to 47B, the female buckle assembly 2s may have a mounting portion 228s. The mounting portion 228s may include a first magnet receiving portion 211s. The first magnet receiving portion 211s may accommodate the first magnet 3s. The cover body 21s may cooperate with the mounting portion 228s to seal the first magnet 3s.

[0217] The first magnet receiving portion 211s may be centrally located on the mounting portion 228s. The first magnet receiving portion 211s may be formed as a cylindrical wall, and the inner side of the first magnet receiving portion 211s may have convex ribs 2285s. The convex ribs 2285s may be used to fix the first magnet 3s. The inner side of the first magnet receiving portion 211s may have four evenly distributed convex ribs 2285s, but the present application is not limited thereto.

[0218] The female buckle assembly 2s may include a pressing element 24s. The pressing element24s may include a pressing portion 241s, a first elastic portion 242s, and a connecting arm 245 s. The first elastic portion 242s may include a positioning post 2422s. The pressing portion 241s is connected to the engaging portion 251s through the connecting arm 245s. For the specific structure of the pressing element 24s, reference may be made to the pressing element 24s in the seventh embodiment.

[0219] The two sides of the mounting portion 228s along the first direction X may respectively have a fourth limiting portion 2281s. The fourth limiting portion 2281s may have a “T”-shaped cross-section. That is to say, the fourth limiting portion 2281s may be formed as a flat plate with convex ribs formed on it. The fourth limiting portion 2281s may limit the movement of the engaging portion 25 Is in the third direction Z.

[0220] The two sides of the mounting portion 228s along the second direction Y may respectively have holes 2283s. The holes 2283s may allow the fifth limiting portion 214s on the cover body 21s to be inserted therein, so that the mounting portion 228s and the cover body 21s are positioned relative to each other.

[0221] The mounting portion 228s may have a groove 2284s on a side of the hole 2283s away from the first magnet receiving portion 211s. The groove 2284s may make way for the positioning post 2422s provided on the first elastic portion 242s of the pressing element 24s.

[0222] Referring to FIGS. 48 and 49, a first limiting portion 223as may be formed on the seat body 22s. The pressing element 24s may include two pressing portions 241s, two first elastic portions 242s and two connecting arms 245s. The first limiting portion 223as may be formed as two strip-shaped protrusions. The two strip-shaped protrusions are parallel to each other and extend in the first direction X to limit the moving direction of the two connecting arms 245 s, that is, the two connecting arms 245s and the two pressing portions 241s can only move in the first direction X. The first limiting portion 223as may limit a compressed state of the first elastic portion 242s by abutting against the first elastic portion 242s.

[0223] A second limiting portion 223cs may also be formed on the seat body 22s. The second limiting portion 223cs may be parallel to the first limiting portion 223as. The female buckle assembly 2s may have a locking hole 226s. The locking hole 226s may be located in the center of the seat body 22s. The second limiting portion 223cs may be located at an edge of the locking hole 226s. A distance between the second limiting portion 223cs and the first limiting portion 223as may correspond to a width of the connecting arm 245s. When the pressing portion 241s is pressed, the connecting arm245s slides between the second limiting portion 223cs and the first limiting portion 223as. The limiting action of the second limiting portion 223cs and the first limiting portion 223as on the connecting arm 245s makes the movement of the connecting arm 245s more stable. Specifically, two second limiting portions 223cs may be formed on the seat body 22s. Two second limiting portions 223cs may be respectively formed at both sides of the locking hole 226s in the second direction Y. The second limiting portion 223cs may be offset in the first direction X relative to the first limiting portion 223as to avoid interfering with a position wherein the engaging element 25s is connected with the connecting arm 245 s.

[0224] A positioning hole 223bs may be formed at a side of the first limiting portion 223as away from the locking hole 226s. Two positioning holes 223bs may be formed on the seat body 22s. Each first elastic portion 242s may have a positioning post 2422s. Each positioning post 2422s may extend in the third direction Z, and be inserted into a corresponding positioning hole 223bs at a side close to the positioning hole 223bs in the third direction Z. The positioning post 2422s extends beyond other parts of the first elastic portion 242s on both sides along the third direction Z. The positioning hole 223bs may restrict the movement of the positioning post 2422s, thus making the elastic deformation process of the first elastic portion 242s more stable. In other words, since the middle part of the first elastic portion 242s is fixedly connected to the seat body 22s, the stability of elastic support of the pressing portions 241s at both sides in the horizontal plane (the plane formed by the first direction X and the second direction Y) can be ensured.

[0225] Referring to FIGS. 49 and 50, a protruding connecting post 227s may be formed on the inner side of the seat body 22s. A protruding connecting cylinder 215s may be formed on the inner side of the cover body 21s. When the seat body 22s is combined with the cover body 21s, the connecting post 227s is inserted into the connecting cylinder 215s, and then the connecting post 227s and the connecting cylinder 215s may be fixed together by ultrasonic welding. The seat body 22s may have two connecting posts 227s, and the cover body 21s may have two connecting cylinders 215s.

[0226] Both sides of the seat body 22s in the second direction Y may have a first welding surface 221s and a second welding surface 222s. The first welding surface 221s faces the cover body 21s (i.e., faces the third direction Z). The second welding surface 222s faces the inner side of the seat body 22s (i.e., faces a direction in a plane formed by the first direction X and the second direction Y). That is, the first welding surface 221s and the second welding surface 222s may be perpendicular to eachother, but the present application is not limited to this. In other embodiments, the first welding surface 221s and the second welding surface 222s may be at an angle with each other. Both the first welding surface 221s and the second welding surface 222s may have curved shapes along a contour of the outer peripheral edge of the seat body 22s.

[0227] A fifth limiting portion 214s may be formed on the cover body 21s. The fifth limiting portion 214s may extend in the third direction Z to prevent the connecting arm 245 s from moving in the third direction Z, thus making the movement of the connecting arm 245 s in the first direction X more stable. Two third limiting portions 214s may be formed on the cover body 21s. Different from the seventh embodiment, the fifth limiting portion 214s of this embodiment may be formed in a cylindrical shape, and two third limiting portions 214s and two connecting cylinders 215s may be located in a straight line, but the present application is not limited to this. There may be an abutting rib 204s between the fifth limiting portion 214s and the connecting cylinder 215s which are close to each other. A side of the positioning post 2422s away from the positioning hole 223bs may abut against the abutting rib 204s along the third direction Z, and the present application is not limited to this.

[0228] Referring to FIGS. 50 and 52, both sides of the cover body 21s along the second direction Y may have a first step 201s, a second step 202s and a third step 203 s. The first step 201s, the second step 202s and the third step 203s may face the outer side of the cover body 21s. The first step 201s, the second step 202s and the third step 203 s may be separated from each other along the third direction Z. The first step 201s, the second step 202s and the third step 203s may all be curved shapes along a contour of the outer peripheral edge of the cover body 21s.

[0229] Referring to FIG. 51, the first step 201s, the second step 202s and the third step 203 s are fixed to the first welding surface 221s and the second welding surface 222s by ultrasonic welding. The first step 201s and the second step 202s may be ultrasonically welded with the second welding surface 222s, and the third step 203s may be ultrasonically welded with the first welding surface 221s. Ultrasonic welding between the first step 201s, the second step 202s and the third step 203 s and the first welding surface 221s and the second welding surface 222s may improve the bonding strength between the cover body 21s and the seat body 22s. It can be understood that the first welding surface 221s and the second welding surface 222s are located on both sides of the seat body 22s along the second direction Y, and the first step 201s, the second step 202s and the third step 203 s are located on both sides of the cover body 21s along the second direction Y, so that the cover body 21s and the seatbody 22s are combined with each other by ultrasonic welding, and an ultrasonic welding area is formed. That is, the cover body 21s and the seat body 22s form the ultrasonic welding area, which is located on both sides of the female buckle assembly 2s along the second direction Y, and the pressing portions 24s are located on both sides of the female buckle assembly 2s in the first direction X. Specifically, the ultrasonic welding area may be located at an outer peripheral edge of the two sides of the female buckle assembly 2s along the second direction Y, and spaces are reserved at the positions of the two sides of the female buckle assembly 2s in the first direction X to set the pressing portions 24s, which makes the structure more compact. Other contents of the eighth embodiment may be found in the seventh embodiment, and will not be described here.

[0230] The first limiting portion 223as, the second limiting portion 223cs and the fifth limiting portion 214s may be collectively referred to as limiting portions.

[0231] The features in the seventh embodiment and the eighth embodiment may be cross-combined without conflict. For example, structures of the first welding surface 221s and the second welding surface 222s as well as the first step 201s, the second step 202s and the third step 203 s in the eighth embodiment may also be applied to the seventh embodiment. The present application does not explain all the combination solutions, but embodiments obtained by cross-combining the features of the seventh embodiment and the eighth embodiment also belongs to the content contained in the specification of the present application.

[0232] Those skilled in the art will easily think of other embodiments of the present application after considering the specification and practicing the present disclosure as mentioned above. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present disclosure and include common knowledge or common technical means in the technical field that are not disclosed in the present application. Also, the specification and embodiments are to be regarded as examples only, and the scope and spirit of the present application are indicated by the claims of the present disclosure.

[0233] Although the present application has been described with reference to the examples of typical embodiments, the terms used are illustrative and exemplary, rather than restrictive. Since the present application may be embodied in various forms without departing from the spirit and essence of the present application it should be understood that the above-mentioned embodiments are not limited to any of the foregoing details, but should be interpreted in the broadest sense within the scopedefined by the claims, so all changes that fall within the scope of the claims or their equivalents should be covered by the claims.

Claims

WHAT IS CLAIMED IS:

1. A buckle, comprising: a male buckle assembly with a locking portion and a female buckle assembly with a locking hole, wherein the locking portion is capable of being inserted into the locking hole to enable the male buckle assembly and the female buckle assembly to form a magnetic connection; the female buckle assembly comprises a seat body, a pressing element and a lock-in element, wherein the lock-in element is engaged with the locking portion at the locking hole; and the pressing element comprises a pressing portion and a first elastic portion, wherein the pressing portion is pressed in a first direction to push the lock-in element to disengage from the locking portion, and a projection of the first elastic portion and a projection of the pressing portion along the first direction do not overlap with each other.

2. The buckle according to claim 1, wherein the pressing element comprises two pressing portions, and wherein the two pressing portions are symmetrically arranged on both sides of the seat body, and the first elastic portion connects the two pressing portions and is integrally formed with the two pressing portions.

3. The buckle according to claim 1 or 2, wherein the pressing element comprises a pushing end, and the lock-in element comprises an abutting end, and the pressing portion pushes the abutting end by means of the pushing end to push the lock-in element to move in a second direction and disengage from the locking portion, wherein the second direction intersects with the first direction.

4. The buckle according to any one of claims 1 to 3, wherein the lock-in element comprises an engaging portion, and the lock-in element is engaged with or disengaged from the locking portion through the engaging portion.

5. The buckle according to any one of claims 1 to 3, wherein the lock-in element comprises a second elastic portion, and the second elastic portion is located at a side portion of the lock-in element and provided in the second direction; an end of the second elastic portion is connected to the abutting end, a connecting hole is formed on one of the other end of the second elastic portion and the seat body, a connecting post is formed on the other one of the other end of the second elastic portion and the seat body, and the connecting hole is sleeved on the connecting post.

6. The buckle according to claim 4, wherein the buckle meets at least one of the following: a first connecting end is formed on the seat body, and a first notch is formed on the pressingportion, and the first connecting end is slidably engaged with the first notch, so that the first connecting end guides the pressing portion to move in the first direction; a second connecting end is formed on the seat body, and the engaging portion has a second notch, and the second connecting end is slidably engaged with the second notch, so that the second connecting end guides the engaging portion to move in a second direction; a first limiting portion is formed on the seat body, and the first limiting portion is formed as two strip-shaped protrusions which are parallel to each other and extend in the second direction to limit a moving direction of the lock-in element.

7. The buckle according to any one of claims 1 to 6, wherein the locking hole is formed on the seat body.

8. The buckle according to any one of claims 1 to 7, wherein a second limiting portion is formed on the seat body, and the second limiting portion is formed as two strip-shaped protrusions which are parallel to each other and extend in the first direction, optionally, a third limiting portion is formed on the seat body, and the third limiting portion is formed on a side of the second limiting portion close to the locking hole, wherein the third limiting portion is formed as two strip-shaped protrusions and is parallel to the second limiting portion.

9. The buckle according to claim 8, wherein the pressing element is provided with a connecting arm in the first direction, and the connecting arm is located between the third limiting portion and the second limiting portion.

10. The buckle according to any one of claims 1 to 9, wherein the first elastic portion and the seat body are respectively provided with a first elastic portion limiting structure that fits into each other for positioning; optionally the first elastic portion limiting structure comprising a positioning post and a positioning hole, one of the first elastic portion and the seat body is provided with the positioning post, the other one of the first elastic portion and the seat body is provided with the positioning hole, and the positioning post is located in the positioning hole.

11. The buckle according to claim 10, wherein the first elastic portion includes two bending portions, and the first elastic portion limiting structure provided at the first elastic portion is provided between the two bending portions.

12. The buckle according to any one of claims 1 to 11, wherein the buckle comprises a mountingportion separated from the seat body, the seat body is provided with a first magnet receiving portion, and the mounting portion is buckled on an outer side of the first magnet receiving portion; or wherein the buckle comprises a mounting portion separated from the seat body, and the mounting portion is provided with a first magnet receiving portion.

13. The buckle according to any one of claims 1 to 12, wherein the pressing element is provided with a connecting arm in the first direction, the pressing element and the lock-in element are connected through the connecting arm, and the pressing element and the lock-in element are respectively located at two sides of the locking hole in the first direction, wherein the pressing element is pressed in the first direction so as to unlock the lock-in element in the first direction.

14. The buckle according to any one of claims 1 to 13, wherein the female buckle assembly comprises a cover body, wherein the cover body and the seat body are fixed to each other and at least partially surround the pressing element and the lock-in element, and the pressing element is linked with the lock-in element, and wherein the cover body and the seat body are combined with each other by ultrasonic welding.

15. The buckle according to claim 14, wherein a protruding connecting post is formed on an inner side of one of the seat body and the cover body, and a protruding connecting cylinder is formed on an inner side of the other one of the seat body and the cover body, and the connecting post is inserted into the connecting cylinder; and / or one of the cover body and the seat body has an elastic finger, and the other one of the cover body and the seat body has a snap hole, wherein the elastic finger is matched with the snap hole to make the cover body engage with the seat body.

16. The buckle according to claim 15, wherein the buckle meets at least one of the following three requirements: the connecting post is ultrasonically welded with the connecting cylinder; at least a portion of an outer peripheral edge of the cover body is ultrasonically welded with at least a portion of an outer peripheral edge of the seat body; and the elastic finger is ultrasonically welded with the snap hole.

17. The buckle according to claim 14, wherein an outer peripheral edge of the cover body has a first step, a second step and a third step, and an outer peripheral edge of the seat body has a first welding surface and a second welding surface, and the first step and the second step are ultrasonically welded with the second welding surface, and the third step is ultrasonically welded with the firstwelding surface, and / or the cover body and the seat body form an ultrasonic welding area, wherein the ultrasonic welding area is located on two sides of the female buckle assembly in the second direction, and the pressing element comprises a pressing portion, wherein the pressing portion is located on two sides of the female buckle assembly in the first direction.

18. A buckle, comprising: a male buckle assembly with a locking portion and a female buckle assembly with a locking hole, wherein the locking portion is capable of being inserted into the locking hole to enable the male buckle assembly and the female buckle assembly to form a magnetic connection; the female buckle assembly comprises a seat body, a pressing element and a lock-in element, wherein the lock-in element is engaged with the locking portion at the locking hole; the pressing element is provided with a connecting arm in the first direction, the pressing element and the lock-in element are connected through the connecting arm, and the pressing element and the lock-in element are respectively located at two sides of the locking hole in the first direction; and the pressing element comprises two pressing portions and a first elastic portion, and two ends of the first elastic portion are respectively connected to the two pressing portions.

19. The buckle according to claim 18, wherein ends the two pressing portions are provided with two opposite clamping ends, and the first elastic portion is provided between the two clamping ends of the two pressing portions in the first direction.

20. The buckle according to claim 18 or 19, wherein a first notch is formed on the engaging portion, a first protrusion matched with the first notch is formed on the seat body, and the first notch and / or the first protrusion extend in the first direction, and / or a second notch is formed on the first elastic portion, a second protrusion matched with the second notch is formed on the seat body, and the second notch and / or the second protrusion extend in a second direction.

21. The buckle according to claim 18, wherein a fifth limiting portion is formed on the female buckle assembly, and the fifth limiting portion extends in a third direction to prevent the connecting arm from moving in the third direction.

22. A buckle, comprising: a male buckle assembly with a locking portion and a female buckle assembly with a locking hole, wherein the locking portion is capable of being inserted into the locking hole to enable the male buckle assembly and the female buckle assembly to form a magneticconnection; the female buckle assembly comprises a seat body, a pressing element and a lock-in element, wherein the lock-in element is engaged with the locking portion at the locking hole; and the pressing element comprises a pressing portion and a first elastic portion; the pressing element is provided with a connecting arm in the first direction, the pressing element and the lock-in element are connected through the connecting arm, and the pressing element and the lock-in element are respectively located at two sides of the locking hole in the first direction; and a fixed end is formed on the seat body, a first end of the first elastic portion is connected to the connecting arm, and a second end of the first elastic portion is capable of being detachably connected to the fixed end.

23. The buckle according to claim 22, wherein an extension portion is formed at an end of the connecting arm close to the pressing portion connected with the connecting arm, the extension portion extends in a second direction, and the first end of the first elastic portion is connected to the extension portion, optionally, the extension portion extends in a direction away from the locking hole, and the first elastic portion is connected to an end of the extension portion away from the connecting arm.

24. The buckle according to claim 23, wherein a limiting end is formed on the seat body, and the limiting end comprises a first limiting end and a second limiting end, wherein the first limiting end is matched with the extension portion to limit the position, and the second limiting end is matched with the pressing portion to limit the position, and the first limiting end and the second limiting end respectively limit the position at two ends of the pressing portion moving in the first direction, optionally, the second limiting end comprises a first limiting surface, and the pressing portion is matched with the first limiting surface for limiting the position; and / or the second limiting end includes a second limiting surface, and the connecting arm is matched with the second limiting surface for limiting the position.

25. A buckle, comprising: a male buckle assembly with a locking portion and a female buckle assembly with a locking hole, wherein the locking portion is capable of being inserted into the locking hole to enable the male buckle assembly and the female buckle assembly to form a magnetic connection; the female buckle assembly comprises a seat body, a pressing element and a lock-in element, wherein the lock-in element is engaged with the locking portion at the locking hole; the pressing element comprises a first pressing portion and a second pressing portion which arerespectively located on two sides of the locking hole, and a first connecting arm and a second connecting arm which are respectively located on two sides of the locking hole, and the lock-in element comprises a first engaging portion and a second engaging portion which are respectively located on two sides of the locking hole; the first connecting arm is connected with the first pressing portion and the first engaging portion, and the first pressing portion and the first engaging portion are located on two sides of the locking hole respectively; and the second connecting arm is connected with the second pressing portion and the second engaging portion, and the second pressing portion and the second engaging portion are located on two sides of the locking hole respectively; and the pressing element further comprises a first elastic portion, wherein the first elastic portion is located between the first pressing portion and the second engaging portion, and / or the first elastic portion is located between the second pressing portion and the first engaging portion.

26. The buckle according to claim 25, wherein an end of the first pressing portion and / or the second pressing portion has a protruding clamping end, a limiting end corresponding to the clamping end is formed on the seat body, and the clamping end is located at an inner side of the limiting end.

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