Fastener and child safety seat

Abstract

The utility model discloses a buckle. The buckle comprises a male buckle and a female buckle which can be inserted and matched with each other, the female buckle is connected with a first magnet, the male buckle is connected with a second magnet, the buckle further comprises a first button and a second button, the first button is arranged to operably prevent the second button from being actuated, and the second button is arranged to operably prevent the second button from being actuated. The second button is arranged to be capable of being actuated so that the male buckle and the female buckle can be unlocked. The buckle provided by the utility model can be automatically clamped, and is simple to operate and good in safety.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of child safety products, and in particular to a magnetic buckle. BACKGROUND

[0002] Child safety seats usually secure a child in the child safety seat by a five-point harness. To prevent the child's shoulders from escaping from the shoulder straps of the harness, some child safety seats are provided with a chest buckle. The male and female buckles of the chest buckle are fixed on the two shoulder straps respectively. After the buckles of the five-point harness are buckled, the male and female buckles of the chest buckle are buckled. In this way, the child can be more securely fixed in the child safety seat.

[0003] However, the existing chest buckle needs the operator to manually align the male and female buckles and then force them to engage in order to fix the male and female buckles to each other, which is inconvenient to use. Moreover, the existing chest buckle is prone to misoperation when unlocking, or the operation is complex. In addition, the existing buckle may have problems of being not firm and stable when buckling. Other buckles of child safety seats, buckles of other child carriers (such as slings, strollers, high chairs, and soothing chairs) also have similar problems. SUMMARY

[0004] It is an object of the present application to provide a buckle in which the male and female buckles can be automatically engaged when aligned with each other.

[0005] It is an object of the present application to provide a buckle which is simple to operate and has good safety.

[0006] It is an object of the present application to provide a buckle which is firm, stable, and has little noise and vibration during buckling.

[0007] To achieve the above objects, in one aspect, the present application provides a buckle comprising a male buckle and a female buckle which can be mated, the female buckle being connected with a first magnet, the male buckle being connected with a second magnet, the buckle further comprising a first button and a second button, the first button being arranged to operably block the second button from being actuated, the second button being arranged to be actuated to unlock the male buckle from the female buckle.

[0008] In one embodiment, the first magnet and the second magnet attract each other.

[0009] In one embodiment, the first button and the second button are slidingly arranged on the female buckle.

[0010] In one embodiment, the first button and the second button are arranged on opposite sides of the female buckle respectively.

[0011] In one embodiment, the buckle further comprises a blocking member operable to block the second button from being actuated.

[0012] In one embodiment, the first button has a first slope thereon, the blocking member has a second slope thereon cooperating with the first slope, movement of the first button in a first direction causes the blocking member to move in a second direction through cooperation of the first slope and the second slope.

[0013] In one embodiment, the second button has an abutting portion, the blocking member and the abutting portion abut to block the second button from being actuated.

[0014] In one embodiment, the male buckle is insertedly fitted with the female buckle in a third direction.

[0015] In one embodiment, the first direction, the second direction and the third direction are staggered with each other.

[0016] In one embodiment, the second button is actuated in a fourth direction opposite to the first direction.

[0017] In one embodiment, the male buckle is provided with a locking portion, the female buckle is provided with a clamping member, the clamping member clamps the locking portion to realize locking of the male buckle and the female buckle.

[0018] In one embodiment, the second button is actuated to drive the clamping member to disengage from the locking portion.

[0019] In one embodiment, the clamping member moves away from the locking portion in the fourth direction, the first magnet moves away from the second magnet in the fourth direction to separate the male buckle and the female buckle.

[0020] In one embodiment, the female buckle further comprises a sliding seat, the clamping member is arranged on the sliding seat and the sliding seat is connected with the second button, the second button is actuated to drive the sliding seat and the clamping member to move in the fourth direction, and the clamping member elastically deforms by abutting the locking portion during movement in the fourth direction.

[0021] In one embodiment, the male buckle further comprises a cooperating portion, the locking portion is connected with the cooperating portion.

[0022] In one embodiment, a limiting rib is formed on the cooperating portion, a limiting recess is formed on the female buckle, when the male buckle is insertedly fitted with the female buckle, the limiting rib cooperates with the limiting recess to limit the position of the male buckle relative to the female buckle.

[0023] In one embodiment, the limiting rib comprises a first rib portion and a second rib portion, the limiting recess comprises a first recess portion cooperating with the first rib portion and a second recess portion cooperating with the second rib portion, the first rib portion extends along a second direction, and the second rib portion extends along a first direction.

[0024] In one embodiment, the cooperating portion has a ring-shaped hole and a connecting arm, the locking portion is located in the ring-shaped hole and connected to the cooperating portion by the connecting arm.

[0025] In one embodiment, the locking portion comprises a clamping portion, when the male buckle is inserted into the female buckle, an actuating slope on the clamping portion presses the clamping member to deform the clamping member.

[0026] In one embodiment, when the male buckle is locked with the female buckle, the locking portion moves in a third direction to press the clamping member to deform the clamping member, so that the locking portion is clamped with the clamping member, and when the male buckle is unlocked with the female buckle, the clamping member moves in a fourth direction to be released from the clamping of the locking portion to be unlocked, the third direction and the fourth direction are staggered with each other.

[0027] In one embodiment, the locking portion is formed in a cylindrical shape, and the clamping portion surrounds a part of the outer periphery of the locking portion.

[0028] In one embodiment, the locking portion comprises an abutting surface, the abutting surface is at least partially surrounded by the clamping portion, and when the male buckle is inserted into the female buckle, the abutting surface is located between the first magnet and the second magnet.

[0029] In one embodiment, the abutting surface is recessed relative to the clamping portion, or the abutting surface is flush with one end of the clamping portion facing the sliding seat.

[0030] In one embodiment, a limiting rib is formed on the cooperating portion, a limiting protrusion is formed on the female buckle, when the male buckle is inserted into the female buckle, the limiting rib cooperates with the limiting protrusion to limit the position of the male buckle relative to the female buckle.

[0031] In one embodiment, the locking portion contains the second magnet, the sliding seat contains the first magnet, and when the male buckle is inserted into the female buckle, the first magnet faces the second magnet.

[0032] In one embodiment, the first magnet is sealed in the sliding seat by a first cover clamped with the sliding seat, and the second magnet is sealed in the locking portion by a second cover clamped with the locking portion.

[0033] In one embodiment, the engaging member includes a first engaging piece and a second engaging piece, the first engaging piece being arranged spaced apart from the second engaging piece such that a distance between the first engaging piece and the second engaging piece is smaller than an outer diameter of the engaging portion.

[0034] In one embodiment, the engaging member is formed of a piece of iron.

[0035] In one embodiment, a first return member is provided between the first button and the second button, the first return member applying a pushing force to the first button and the second button away from each other.

[0036] In one embodiment, a second return member is provided between the blocking member and the female housing, the second return member applying a force to the blocking member to move toward a position to block the second button.

[0037] In one embodiment, the male buckle includes a first connection hole, and the female buckle includes a second connection hole, the first connection hole and the second connection hole extending laterally from the male buckle and the female buckle, respectively, and being used to connect a safety belt.

[0038] In one embodiment, the first connection hole is provided at a bottom of the male buckle, the second connection hole is provided at a bottom of the female buckle, or the first connection hole is provided at a side wall of the male buckle, and the second connection hole is provided at a side wall of the female buckle.

[0039] In another aspect, the present application provides a child safety seat, wherein the child safety seat includes the buckle as described above.

[0040] In another aspect, the present application provides a buckle including a male buckle and a female buckle, the male buckle having a protruding lock portion, the female buckle having a female housing with a mating hole for the lock portion to be inserted, and an engaging member including a first engaging member and a second engaging member, the first engaging member and the second engaging member being operable to lock or unlock with the lock portion inserted into the mating hole, wherein the second engaging member is unlocked by being moved away from the lock portion along a first direction, and the first engaging member is unlocked by being spread apart along a second direction to release the lock portion.

[0041] In one embodiment, the female buckle further includes a first button movably provided at one side of the female housing, a second button movably provided at another side of the female housing, a blocking member preventing movement of the second button when the first button is not actuated, and allowing movement of the second button when the first button is actuated, and a sliding seat moving in synchronization with the second button, wherein the second button is actuated to drive the engaging member to be unlocked with the lock portion through the sliding seat.

[0042] In one embodiment, the first engaging member is fixed on the female buckle housing, and the second engaging member is fixed on the sliding seat.

[0043] In one embodiment, the first engaging member includes a first engaging piece and a second engaging piece, the second engaging member includes a third engaging piece and a fourth engaging piece, the mating portion includes an engaging slot, and the first engaging piece, the second engaging piece, the third engaging piece and the fourth engaging piece lock the engaging member with the mating portion by extending into the engaging slot.

[0044] In one embodiment, when the second button is actuated, the first engaging piece and the second engaging piece are disengaged from the engaging slot in a direction intersecting with a direction in which the third engaging piece and the fourth engaging piece are disengaged from the engaging slot.

[0045] In one embodiment, the first engaging piece and the second engaging piece each have a driving block, the sliding seat has a first recess, one side of the first recess forms a driving slope, and the sliding seat actuates the first engaging piece and the second engaging piece by cooperation of the driving slope and the driving blocks.

[0046] In one embodiment, at least one of the first engaging piece, the second engaging piece, the third engaging piece and the fourth engaging piece is coated with plastic.

[0047] In one embodiment, the female buckle housing includes a female buckle lower cover and a female buckle upper cover, the female buckle lower cover has a first positioning block and a second positioning block, the first positioning block and the second positioning block are arranged at intervals along a first direction, and a portion of the first engaging member is located between the first positioning block and the second positioning block to be positioned by the first positioning block and the second positioning block.

[0048] In one embodiment, the female buckle has a first magnet, the male buckle has a second magnet, when the male buckle and the female buckle are locked with each other, the first magnet and the second magnet are at least partially aligned with each other, when the male buckle and the female buckle are unlocked with each other, the first magnet moves relative to the second magnet to be staggered with each other, and the first magnet and the second magnet attract each other.

[0049] In one embodiment, the first magnet is arranged on the sliding seat.

[0050] In one embodiment, the first button has a pushing portion on one side along the second direction, the first button is actuated along the first direction so that the pushing portion pushes the blocking member to move along the second direction, the first direction intersects with the second direction, and the second button is actuated along a direction opposite to the first direction.

[0051] In one embodiment, the push portion has a first stop portion formed on a side thereof close to one side of the female buckle housing in the first direction, and the female buckle housing prevents the first button from sliding out of the female buckle housing by abutting against the first stop portion; and / or the second button has an abutting portion on a side thereof in the second direction, the blocking member prevents the second button from moving by abutting against the abutting portion, the abutting portion has a second stop portion formed on a side thereof close to one side of the female buckle housing in the first direction, and the female buckle housing prevents the second button from sliding out of the female buckle housing by abutting against the second stop portion.

[0052] In one embodiment, the male buckle has a fitting portion which overlaps the female buckle housing when the male buckle and the female buckle are locked with each other.

[0053] In one embodiment, the locking portion is arranged on the fitting portion, and a connecting recess is formed between the locking portion and the fitting portion, and the female buckle housing has a connecting protrusion which is fitted with the connecting recess when the male buckle and the female buckle are locked with each other.

[0054] In one embodiment, the first direction is perpendicular to the second direction.

[0055] In another aspect, the application provides a buckle, comprising a male buckle and a female buckle, the male buckle has a protruding locking portion, the female buckle has a female buckle housing having a mating hole for the locking portion to be inserted into, and a blocking member comprising a second blocking piece, the second blocking piece is operable to lock or unlock with the locking portion inserted into the mating hole; wherein the second blocking piece is unlocked with the locking portion in a first direction and a second direction.

[0056] In one embodiment, the second blocking piece comprises a third blocking piece and a fourth blocking piece, the locking portion comprises a blocking groove, the third blocking piece and the fourth blocking piece lock the blocking member with the locking portion by extending into the blocking groove.

[0057] In one embodiment, the female buckle further has a second button movably arranged on the female buckle housing, and the second button moves synchronously with the second blocking piece.

[0058] In one embodiment, the female buckle housing has a driving inclined groove, and the second blocking piece has a driving protrusion formed thereon, and the driving protrusion is located in the driving inclined groove.

[0059] In one embodiment, the female buckle housing has two driving inclined grooves, each of which has an inclined surface, and each of the third and fourth engaging pieces is formed with a driving protrusion, and when the second engaging piece moves away from the mating portion along the first direction, the inclined surfaces of the two driving inclined grooves drive the driving protrusions of the third and fourth engaging pieces respectively, so that the third and fourth engaging pieces of the second engaging piece are spread apart.

[0060] In one embodiment, the driving inclined groove has a triangular shape, and the driving protrusion is formed as a cylindrical protrusion.

[0061] In one embodiment, the second engaging piece further comprises a second horizontal portion, one side of the third and fourth engaging pieces is connected by the second horizontal portion, and the driving protrusion is formed on the other side of the third and fourth engaging pieces.

[0062] In one embodiment, the second engaging piece moves away from the mating portion along the first direction and is spread apart along the second direction to be unlocked from the mating portion.

[0063] In another aspect, the present application provides a child safety seat comprising the buckle as described above.

[0064] The buckle of the present application has at least the following beneficial technical effects:

[0065] 1. By fixedly arranging a first magnet on the male buckle and a second magnet on the female buckle, the male buckle and the female buckle will be automatically engaged under the action of the two magnets as long as the engaging structure of the male buckle and the female buckle is aligned, which is simple to operate and convenient to use.

[0066] 2. The female buckle is further provided with a first button and a second button, and only after the first button is pressed can the second button be pressed, so that the buckle is safer and prevents accidental release, and at the same time, the user can press the first button and the second button with two fingers during the release operation, which is convenient to force and use.

[0067] 3. The female buckle has two engaging pieces, which engage with the mating portion from different directions, so that the engagement of the male buckle and the female buckle is more firm and stable.

[0068] 4. The engaging piece is covered with plastic on the engaging piece, so that the contact between the engaging piece and the mating portion remains silent and reduces vibration, and at the same time, the repeated friction between the engaging piece and the mating portion can be avoided to cause part wear and tear and increase the strength of the engaging piece. BRIEF DESCRIPTION OF DRAWINGS

[0069] The various objectives, features, and advantages of this invention will become more apparent from the following detailed description of preferred embodiments in conjunction with the accompanying drawings. The drawings are merely illustrative illustrations of the invention and are not necessarily drawn to scale. In the drawings, the same reference numerals always denote the same or similar parts. Wherein:

[0070] Figure 1 This is a perspective view of a fastener according to an embodiment of this application;

[0071] Figure 2 yes Figure 1 A perspective view of the fastener in the embodiment from another angle;

[0072] Figure 3 yes Figure 1 A perspective view of the male buckle of the embodiment;

[0073] Figure 4 yes Figure 1 A perspective view of the fastener in the embodiment, wherein the male and female fasteners are separate;

[0074] Figure 5 yes Figure 1 A cross-sectional view of the fastener in the embodiment, wherein part A of the cross-sectional view is enlarged;

[0075] Figure 6 yes Figure 1 A cross-sectional view of the fastener in the embodiment, wherein the male and female fasteners are separate;

[0076] Figure 7 yes Figure 1 A perspective view of the female buckle cover of the embodiment;

[0077] Figure 8 yes Figure 1 A perspective view of the fastener in the embodiment, wherein the female buckle cover is removed and the first and second buttons are not actuated;

[0078] Figure 9 yes Figure 1 A perspective view of the fastener in the embodiment, wherein the female buckle cover is removed and the first and second buttons are actuated;

[0079] Figure 10 yes Figure 1 An exploded perspective view of the female buckle of the embodiment;

[0080] Figure 11 yes Figure 1 A perspective view of the female buckle of the embodiment, wherein the lower cover of the female buckle is removed;

[0081] Figure 12 yes Figure 1Bottom view cross-sectional view of the buckle of the embodiment, where the first button and the second button are not actuated;

[0082] Figure 13 is a perspective view of a buckle of an embodiment of the present application; Figure 1 Bottom view cross-sectional view of the buckle of the embodiment, where the first button and the second button are actuated;

[0083] Figure 14 is a perspective view of a buckle of an embodiment of the present application;

[0084] Figure 15 is a perspective view of a catch of a buckle of an embodiment of the present application;

[0085] Figure 16 is a cross-sectional view of a buckle of an embodiment of the present application, where portion B of the cross-sectional view is enlarged;

[0086] Figure 17 is a perspective view of a male buckle of a buckle of an embodiment of the present application;

[0087] Figure 18 is a perspective view of a female buckle of a buckle of an embodiment of the present application; Figure 17

[0088] is a perspective view of a buckle of an embodiment of the present application; Figure 19A

[0089] is a perspective view of a buckle of an embodiment of the present application; Figure 19B Figure 19A is a side view of a buckle of an embodiment of the present application;

[0090] Figure 20 Figure 19A is a perspective view of a buckle of an embodiment of the present application from another angle;

[0091] Figure 21A is a plan view of a female buckle of a buckle of an embodiment of the present application; Figure 19A

[0092] is a side view of a female buckle of a buckle of an embodiment of the present application; Figure 21B Figure 19A is a perspective view of a male buckle of a buckle of an embodiment of the present application;

[0093] Figure 22 Figure 19A is a perspective view of a male buckle of a buckle of an embodiment of the present application;

[0094] Figure 23 is a cross-sectional view of a buckle of an embodiment of the present application and a partial enlarged view thereof; Figure 19A

[0095] is a perspective view of a buckle of an embodiment of the present application and a partial enlarged view thereof, where neither the first button nor the second button is pressed and part of the components are removed to show the internal structure; Figure 24 Figure 19A is a perspective view of a buckle of an embodiment of the present application and a partial enlarged view thereof, where neither the first button nor the second button is pressed and part of the components are removed to show the internal structure;​​​​​

[0096] Figure 25 is Figure 19A Perspective view of the buckle of the embodiment with the first button being pressed and the second button not being pressed and with parts removed to show internal structure;

[0097] Figure 26 is Figure 19B Cross-sectional view taken along line A-A;

[0098] Figure 27 is Figure 19A Perspective view of the female buckle lower cover of the buckle of the embodiment;

[0099] Figure 28 is Figure 19B Cross-sectional view taken along line B-B with both the first button and the second button being pressed;

[0100] Figure 29 is Figure 19A Perspective view of the catch of the buckle of the embodiment;

[0101] Figure 30 is Figure 19A Another perspective view of the catch of the buckle of the embodiment;

[0102] Figure 31 is Figure 21B Cross-sectional view taken along line C-C with both the first button and the second button not being actuated;

[0103] Figure 32A is Figure 19A Perspective view of the sliding seat of the buckle of the embodiment;

[0104] Figure 32B is Figure 19A Another perspective view of the sliding seat of the buckle of the embodiment;

[0105] Figure 33 is Figure 19A Perspective view of the female buckle of the buckle of the embodiment with both the first button and the second button not being actuated and with parts removed to show internal structure;

[0106] Figure 34 is Figure 19A Cross-sectional view of the female buckle of the embodiment;

[0107] Figure 35 is Figure 19A Perspective view of the female buckle upper cover of the buckle of the embodiment;

[0108] Figure 36 is Figure 19A Perspective view of the female buckle of the embodiment with parts removed to show internal structure;

[0109] Figure 37 is a perspective view of a female buckle of a buckle of an embodiment of the present application, with parts removed to show internal structure;

[0110] Figure 38 is Figure 37 is a perspective view of a female buckle of a buckle of an embodiment of the present application, with parts removed to show internal structure;

[0111] Figure 39 is Figure 37 is a perspective view of a female buckle of a buckle of an embodiment of the present application, with parts removed to show internal structure; and

[0112] Figure 40 is Figure 37 is a perspective view of a female buckle of a buckle of an embodiment of the present application, with parts removed to show internal structure.

[0113] List of Reference Signs:

[0114] 1 buckle

[0115] 10 male buckle

[0116] 11 male buckle housing

[0117] 111 first connection hole

[0118] 12 lock fitting portion

[0119] 121 engagement portion

[0120] 1211 actuation ramp

[0121] 122 abutment face

[0122] 123 second magnet receiving portion

[0123] 124 body portion

[0124] 125 second cover

[0125] 127 engagement slot

[0126] 13 mating portion

[0127] 131 stop rib

[0128] 1311 first rib portion

[0129] 1312 second rib portion

[0130] 132 encircling hole

[0131] 133 connection arm

[0132] 14 reinforcing portion

[0133] 20 female buckle

[0134] 21 female buckle housing

[0135] 211 second connecting hole

[0136] 212 limiting recess

[0137] 2121 first recess

[0138] 2122 second recess

[0139] 213 docking hole

[0140] 214 female buckle lower cover

[0141] 2141 positioning piece

[0142] 215 female buckle upper cover

[0143] 216 limiting protrusion

[0144] 22 first button

[0145] 221 first inclined surface

[0146] 222 first stop portion

[0147] 23 second button

[0148] 231 abutting portion

[0149] 24 blocking piece

[0150] 241 second inclined surface

[0151] 243 limiting hole

[0152] 245 receiving slot

[0153] 25 clamping piece

[0154] 251 first clamping piece

[0155] 252 second clamping piece

[0156] 253 horizontal portion

[0157] 254 limiting piece

[0158] 26 sliding seat

[0159] 261 first magnet accommodating portion

[0160] 262 clamping cavity

[0161] 263 first cover

[0162] 2631 clamping protrusion

[0163] 30 first magnet

[0164] 40 second magnet

[0165] 50 first reset piece

[0166] 60 second reset member

[0167] 1S buckle

[0168] 10S male buckle

[0169] 11S male buckle housing

[0170] 111S first connecting hole

[0171] 12S lock portion

[0172] 121S actuating slope

[0173] 122S engaging groove

[0174] 123S second magnet accommodating portion

[0175] 13S mating portion

[0176] 133S connecting recess

[0177] 14S second cover

[0178] 20S female buckle

[0179] 21S female buckle housing

[0180] 211S second connecting hole

[0181] 213S counter-bore

[0182] 214S female buckle lower cover

[0183] 2141S positioning member

[0184] 2142S connecting hole

[0185] 2143S first positioning block

[0186] 2144S second positioning block

[0187] 2145S driving inclined slot

[0188] 2146S slope

[0189] 215S female buckle upper cover

[0190] 2151S connecting finger

[0191] 2152S limiting rib

[0192] 2153S mounting post

[0193] 2154S reinforcing rib

[0194] 216S connecting flange

[0195] 22S first button

[0196] 220S pushing portion

[0197] 221S first inclined surface

[0198] 222S first stop portion

[0199] 23S second button

[0200] 231S abutting portion

[0201] 232S second stop portion

[0202] 24S blocking piece

[0203] 241S second inclined surface

[0204] 243S limiting hole

[0205] 2431S notch

[0206] 245S receiving groove

[0207] 25S clamping piece

[0208] 251S first clamping piece

[0209] 2511S first clamping sheet

[0210] 2512S second clamping sheet

[0211] 2513S first horizontal portion

[0212] 2514S driving block

[0213] 252S second clamping piece

[0214] 2521S third clamping sheet

[0215] 2522S fourth clamping sheet

[0216] 2523S second horizontal portion

[0217] 2524S driving block

[0218] 2525S driving convex portion

[0219] 2526S hook portion

[0220] 26S sliding seat

[0221] 261S first magnet accommodating portion

[0222] 264S first recess

[0223] 2641S driving inclined surface

[0224] 265S second recess

[0225] 266S protrusion

[0226] 267S spring positioning portion

[0227] 268S hook portion avoiding groove

[0228] 30S first magnet

[0229] 40S second magnet

[0230] 50S first reset member

[0231] 60S second reset member DETAILED DESCRIPTION

[0232] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail with reference to the accompanying drawings.

[0233] It should be noted that in the following description, many specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in other ways different from those described herein, and therefore, the scope of the present application is not limited to the specific embodiments disclosed below.

[0234] In addition, in the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or component referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0235] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, can be fixedly connected, can be detachably connected, or can be integrated; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two components or the interaction relationship between two components. However, it is noted that direct connection means that the connection between the two main bodies does not form a connection relationship through an excessive structure, but is connected only through a connection structure to form a whole. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0236] In the present application, unless specifically stated and limited otherwise, a first feature is "on" or "under" a second feature can mean that the first and second features are in direct contact, or the first and second features are in indirect contact with an intermediate medium. In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific feature, structure, material or characteristic being described is included in at least one embodiment or example of the present application. The illustrative representations of the above terms in the specification do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0237] The buckle 1 of the present application can be used in child safety products, such as child safety seats, child safety baskets, baby strollers, and the like.

[0238] An embodiment of the present application will be described below.

[0239] Referring to Figure 1 and Figure 2 , the buckle 1 can include a male buckle 10 and a female buckle 20 that can be insertedly fitted. The male buckle 10 and the female buckle 20 can be disposed opposite each other in a Y direction (when not specifically mentioned, the Y direction includes a positive Y direction and a negative Y direction, wherein the "positive Y direction" means the Y direction as shown in Figure 1 , and the "negative Y direction" means the direction opposite to the Y direction as shown in Figure 1 , and the same applies to the X direction and the Z direction). The female buckle 20 can include a first button 22 and a second button 23. In the present application, the positive X direction can be referred to as a first direction, the positive Y direction can be referred to as a second direction, the positive Z direction can be referred to as a third direction, and the negative X direction can be referred to as a fourth direction, but the present application is not limited thereto. The X direction, the Y direction, and the Z direction can be alternately interchanged with each other. Preferably, the X direction, the Y direction, and the Z direction can be perpendicular to each other.

[0240] The first button 22 and the second button 23 can be respectively located on opposite sides of the buckle 1 in the X direction. The first button 22 can be pressed in the positive X direction. The second button 23 can be pressed in the negative X direction. The male buckle 10 can be formed with first connection holes 111 on both sides thereof in the X direction. The female buckle 20 can be formed with second connection holes 211 on both sides thereof in the X direction. That is, the first connection holes 111 and the second connection holes 211 can respectively extend laterally from the male buckle 10 and the female buckle 20. The first connection holes 111 and the second connection holes 211 can be used to connect, for example, shoulder straps or safety belts (not shown) of a child safety seat. In the present embodiment, the first connection holes 111 can be provided at the bottom of the male buckle 10, and the second connection holes 211 can be provided at the bottom of the female buckle 20.

[0241] In another embodiment, the male buckle 10 can include a first button 22 and a second button 23.

[0242] In another embodiment, the male buckle 10 can be formed with other number of first connecting holes 111, for example, one first connecting hole 111, which can be disposed at the end of the male buckle 10 along the Y direction.

[0243] In another embodiment, the female buckle 20 can be formed with other number of second connecting holes 211, for example, one second connecting hole 211, which can be disposed at the end of the female buckle 20 along the Y direction.

[0244] Referring to Figure 3 The male buckle 10 can have a male buckle housing 11. The male buckle housing 11 can form at least a portion of the appearance of the male buckle 10. The male buckle 10 can further include a mating portion 13. The mating portion 13 can protrude from the male buckle housing 11 along the Y direction. The mating portion 13 can be formed in the shape of a substantially flat plate, but the present application is not limited thereto. The male buckle 10 can further include a lock fitting portion 12. The lock fitting portion 12 can be connected with the mating portion 13. The mating portion 13 can be formed with a limiting rib 131. The limiting rib 131 can be formed at the edge of the mating portion 13. The limiting rib 131 can include a first rib portion 1311 and a second rib portion 1312. The first rib portion 1311 can extend along the Y direction. The second rib portion 1312 can extend along the X direction. The first rib portion 1311 and the second rib portion 1312 can be integrally formed and perpendicular to each other. The mating portion 13 can have a surrounding hole 132 and a connecting arm 133. The lock fitting portion 12 can be located within the surrounding hole 132 and connected with the mating portion 13 by means of the connecting arm 133. The surrounding hole 132 can surround a substantial portion of the outer periphery of the mating portion 13. The surrounding hole 132 can be formed as one whole, or as a plurality of independent portions. The mating portion 13 can have one or more connecting arms 133, and the present application is not limited to the number of connecting arms 133. The position where the mating portion 13 is connected with the male buckle housing 11 can be formed with a reinforcing portion 14, so as to strengthen the connection between the mating portion 13 and the male buckle housing 11, and avoid the mating portion 13 from being damaged by external force. The reinforcing portion 14 can be formed on both sides of the position where the mating portion 13 is connected with the male buckle housing 11.

[0245] Referring to Figure 4 The male buckle 10 and the female buckle 20 can be buckled to each other along the Z direction. In another embodiment, the male buckle 10 and the female buckle 20 can be buckled to each other along the Y direction. The female buckle 20 can include a clamping member 25. The clamping member 25 can be a piece of iron, but the present application is not limited thereto. The clamping member 25 can be clamped with the lock fitting portion 12 to achieve the locking of the male buckle 10 and the female buckle 20. The female buckle 20 can include a limiting recess 212 (see Figure 4 and Figure 5). The limit recess 212 can be formed in a surface facing the male coupling 10. When the male coupling 10 is fitted into the female coupling 20, the limit rib 131 can cooperate with the limit recess 212 to limit the position of the male coupling 10 with respect to the female coupling 20. That is, the cooperation of the limit rib 131 and the limit recess 212 can prevent the male coupling 10 and the female coupling 20 from moving with respect to each other in the X direction and the Y direction. The limit recess 212 can include a first recess 2121 cooperating with the first rib 1311 and a second recess 2122 cooperating with the second rib 1312.

[0246] Referring to Figures 5 to 6 , the lock fitting portion 12 can include a fitting portion 121, a mating surface 122, and a body portion 124. The body portion 124 can be formed in a cylindrical shape, and a second magnet receiving portion 123 can be formed inside thereof to receive the second magnet 40. The lower side (negative Z direction) of the second magnet receiving portion 123 is open to facilitate the insertion of the second magnet 40 thereinto. The second magnet 40 can be connected to the male coupling 10 with an adhesive, or engaged with the male coupling 10, or connected to the male coupling 10 with a positioning member. The fitting portion 121 is formed at the outer periphery of the upper portion of the body portion 124. The fitting portion 121 can be formed to surround all or a part of the outer periphery of the body portion 124. The outer periphery of the fitting portion 121 is greater than that of the body portion 124, so that the lower surface (facing the negative Z direction) of the fitting portion 121 can block the movement of the engaging member 25 in the positive Z direction, thereby achieving the locking between the male coupling 10 and the female coupling 20. The uppermost end of the fitting portion 121 constitutes the uppermost end of the lock fitting portion 12. An actuation slope 1211 can be formed on the fitting portion 121. In some examples, the fitting portion 121 can be formed in a tapered shape that gradually narrows from the lower side to the upper side (in the positive Z direction), and one slope of the tapered shape forms the actuation slope 1211, but is not limited thereto. The mating surface 122 is formed on the inner side of the fitting portion 121, and is recessed with respect to the fitting portion 121. The mating surface 122 can be at least partially surrounded by the fitting portion 121. When the male coupling 10 is fitted into the female coupling 20, the mating surface 122 is positioned between the first magnet 30 and the second magnet 40. The mating surface 122 can be formed in a flat surface.

[0247] The engaging member 25 can include a first engaging piece 251 and a second engaging piece 252. The first engaging piece 251 can be disposed apart from the second engaging piece 252 such that the distance between the first engaging piece 251 and the second engaging piece 252 is less than the outer diameter of the fitting portion 121. When the male coupling 10 is fitted into the female coupling 20, the actuation slope 1211 can press the first engaging piece 251 and the second engaging piece 252 of the engaging member 25 to deform the engaging member 25 such that the distance between the first engaging piece 251 and the second engaging piece 252 is greater than or equal to the outer diameter of the fitting portion 121, thereby allowing the lock fitting portion 12 to pass through the gap between the first engaging piece 251 and the second engaging piece 252 to achieve the locking.

[0248] Referring to Figure 5 andFigure 10 The female buckle 20 can include a sliding seat 26. The clamping member 25 can be arranged on the sliding seat 26 and fixedly connected with the sliding seat 26. Specifically, referring to Figure 11 The clamping member 25 can include a first clamping piece 251, a second clamping piece 252, and a cross portion 253 connected between the first clamping piece 251 and the second clamping piece 252. At least a portion of the cross portion 253 can be bent relative to the first clamping piece 251 and the second clamping piece 252. The cross portion 253 can be clamped and fixed with the sliding seat 26, so that the clamping member 25 can slide with the sliding seat 26, but the application does not limit the connection manner of the clamping member 25 and the sliding seat 26. The clamping member 25 can be deformed or opened under force during sliding. Specifically, the cross portion 253 can be bent and deformed during sliding, and the first clamping piece 251 and the second clamping piece 252 can be opened under force during sliding. The clamping member 25 can further include a limiting piece 254. The limiting piece 254 can be formed on the outer side of the first clamping piece 251 and the second clamping piece 252, respectively, to limit the minimum gap between the first clamping piece 251 and the second clamping piece 252. The sliding seat 26 is connected with the second button 23. The sliding seat 26 can form a first magnet accommodating portion 261 and a clamping cavity 262. The first magnet accommodating portion 261 can accommodate the first magnet 30. The first magnet accommodating portion 261 is open at the top, so as to facilitate the placement of the first magnet 30 therein. A first cover 263 can be used to seal and position the first magnet 30 in the first magnet accommodating portion 261. The first cover 263 can be clamped in the first magnet accommodating portion 261 of the sliding seat 26. The first cover 263 can be made of plastic. The outer periphery of the first cover 263 can form a clamping protrusion 2631. The clamping protrusion 2631 can be formed in the shape of a ring surrounding the first cover 263, or in the shape of multiple parts separated from each other surrounding the first cover 263. The first cover 263 can be fixedly connected with the corresponding recess on the female buckle 20 through the clamping protrusion 2631. The clamping cavity 262 can be formed on the outer periphery of the lower part of the first magnet accommodating portion 261. The clamping cavity 262 can accommodate the clamping portion 121, so that the radially inner side portion of the clamping cavity 262 of the sliding seat 26 can abut against the abutting face 122 of the locking portion 12, so that the clamping portion 121 entering the clamping cavity 262 can surround a part of the first magnet 30. The first magnet 30 and the second magnet 40 are opposite to each other and repel each other, so that the male buckle 10 and the female buckle 20 can be automatically clamped and connected with each other under the attraction between the first magnet 30 and the second magnet 40. In other words, the attraction between the first magnet 30 and the second magnet 40 is large enough to cause the actuating inclined face 1211 of the locking portion 12 to press and deform the clamping member 25. In another embodiment, the first magnet 30 and the second magnet 40 can repel each other.

[0249] Referring to Figure 5 and Figure 6The female buckle 20 can include a female buckle housing 21. The female buckle housing 21 can form at least a portion of the appearance of the female buckle 20. The female buckle housing 21 can include a female buckle upper cover 215 and a female buckle lower cover 214 (see Figure 10 ). The female buckle upper cover 215 can be fixedly connected to the female buckle lower cover 214 by means of a screw, but the present application is not limited thereto.

[0250] Referring to Figure 10 , the female buckle 20 can further include a blocking piece 24. The blocking piece 24 is operable to block the second button 23 from being actuated. The second button 23 can have an abutting portion 231 thereon, which abuts against the blocking piece 24 when the buckle 1 is in the locked state, to block the second button 23 from being operated. In some embodiments not shown, the blocking piece 24 can also block the sliding seat 26 to block the second button 23 from being operated. In some embodiments, the first button 22 can have a first inclined surface 221 thereon. The blocking piece 24 can have a second inclined surface 241. The second inclined surface 241 is configured to cooperate with the first inclined surface 221 to cause the blocking piece 24 to move in the Y direction. The female buckle lower cover 214 can have a docking hole 213 thereon, which can allow the lock fitting portion 12 to be inserted therein.

[0251] Referring to Figures 8 to 10 , the first button 22 is configured to operably block the second button 23 from being actuated, for example, the first button 22 is configured to prevent the second button 23 from being actuated when it is not actuated. The second button 23 is configured to be actuated to unlock the male buckle 10 from the female buckle 20. The first button 22, the second button 23, the blocking piece 24 and the sliding seat 26 are all slidably arranged on the female buckle housing 21. The first button 22 and the second button 23 can slide in the X direction. The blocking piece 24 can slide in the Y direction.

[0252] When the first button 22 is actuated in the positive X direction, the first inclined surface 221 can abut against the second inclined surface 241 of the blocking piece 24, thereby pushing the blocking piece 24 to move in the Y direction and away from the abutment with the abutting portion 231, thereby removing the blockage of the second button 23. In some embodiments, in particular, the first inclined surface 221 can be formed on the side of the first button 22 close to the blocking piece 24, for example, the side of the first button 22 in the Y direction. In some embodiments, a first return piece 50 can be arranged between the first button 22 and the second button 23. The first return piece 50 applies a pushing force to the first button 22 and the second button 23 away from each other. In particular, as Figure 8 and Figure 11In the illustrated embodiment, one end of the first reset member 50 can abut against the first button 22, and the other end of the first reset member 50 can abut against the sliding seat 26. Since the second button 23 and the sliding seat 26 slide together, the abutment of the first reset member 50 against the sliding seat 26 can also reset the sliding seat 26 to drive the second button 23. The first reset member 50 can apply a reset force to the first button 22 to return the first button 22 to the initial state before being actuated. In some embodiments, the first button 22 can have a first stop portion 222. The first stop portion 222 can be formed on one side of the first button 22, for example, the side of the first button 22 along the Y direction. The first stop portion 222 can abut against the female buckle housing 21 to limit the sliding of the first button 22 to avoid the first button 22 from sliding out of the female buckle housing 21 and separating from the female buckle housing 21.

[0253] In some embodiments, the female buckle lower cover 214 can have a positioning member 2141, and the blocking member 24 can have a limiting hole 243 (see Figures 8 to 10 ). The positioning member 2141 can be inserted into the limiting hole 243 of the blocking member 24 to limit the sliding range of the blocking member 24. In some embodiments, the blocking member 24 and the female buckle housing 21 can be provided with a second reset member 60. The second reset member 60 can apply a force to the blocking member 24 to move towards the position of blocking the second button 23. Specifically, in some embodiments, the blocking member 24 can have a receiving groove 245, and the second reset member 60 can be arranged between the female buckle lower cover 214 and the receiving groove 245. An abutment portion 231 can be formed on the side of the second button 23 close to the blocking member 24, for example, the side of the second button 23 along the Y direction. When the blocking member 24 is not actuated by the first button 22, the blocking member 24 abuts against the abutment portion 231 to prevent the second button 23 from being actuated in the negative X direction. The second reset member 60 applies a reset force to the blocking member 24 to tend to restore the blocking member 24 to the initial position before being actuated by the first button 22. Optionally, the female buckle lower cover 214 can have a structure to guide the sliding of the blocking member 24.

[0254] The second button 23 can be actuated to drive the sliding seat 26 and the clamping member 25 to move in the negative X direction. Referring to Figures 11 to 13 , the first clamping piece 251 and the second clamping piece 252 of the clamping member 25 abut against the locking portion 12 and are elastically deformed during the movement. Specifically, the gap between the first clamping piece 251 and the second clamping piece 252 corresponds to the shape of the body portion 124 of the locking portion 12. When the second button 23 drives the sliding seat 26 and the clamping member 25 to move in the negative X direction, the distance between the first clamping piece 251 and the second clamping piece 252 at one end along the positive X direction is smaller than the diameter of the body portion 124, so that the first clamping piece 251 and the second clamping piece 252 are squeezed by the body portion 124 and are opened.

[0255] The operation of the buckle 1 will be described below.

[0256] When the male buckle 10 and the female buckle 20 are buckled to each other, the male buckle 10 and the female buckle 20 are moved closer to each other along the Z direction at the position as shown in FIG. 1. The mating portion 12 enters the female buckle housing 21 through the abutting hole 213. Then, the first magnet 30 and the second magnet 40 attract each other to move the male buckle 10 and the female buckle 20 closer to each other. At this time, referring to FIG. 2, the actuating slope 1211 of the engaging portion 121 pushes the first engaging piece 251 and the second engaging piece 252 radially outward to elastically deform the engaging member 25. After the engaging portion 121 passes through the engaging member 25, it enters the engaging cavity 262. Then, the first engaging piece 251 and the second engaging piece 252 return to the state that the engaging member 25 is not deformed. The first engaging piece 251 and the second engaging piece 252 that return to the state that the engaging member 25 is not deformed are located below the engaging portion 121, thereby locking the engaging portion 121 in the engaging cavity 262. As shown in FIG. 3, when the buckle 1 is in the locked state, the blocking member 24 abuts against the abutting portion 231 of the second button 23, so the second button 24 cannot be moved, and the buckle 1 cannot be unlocked. Figure 6 Figure 5 Figure 8

[0257] When it is necessary to unlock, the first button 22 is first pressed along the X direction. The first slope 221 of the first button 22 cooperates with the second slope 241 of the blocking member 24 to push the blocking member 24 along the Y direction, so that it is disengaged from the abutting portion 231 of the second button 23. Then, the second button 23 is pushed along the negative X direction to unlock the buckle 1. When the buckle 1 is unlocked, the movement of the second button 23 along the negative X direction drives the sliding seat 26 and the engaging member 25 to move. The body portion 124 of the mating portion 12 pushes the first engaging piece 251 and the second engaging piece 252 to open the first engaging piece 251 and the second engaging piece 252, and makes the engaging member 25 misaligned with the mating portion 12 in the Z direction, and the engaging piece 251 disengaged from the mating portion 12. In this way, the engaging member 25 no longer prevents the engaging portion 121 from moving along the negative Z direction. At this time, the first magnet 30 is also misaligned with the second magnet 40, so that the attractive force between the first magnet 30 and the second magnet 40 is weakened. That is, the second magnet 40 can move along with the sliding seat 26 away from the first magnet 30, so that the attractive force between the first magnet 30 and the second magnet 40 is weakened. Finally, the male buckle 10 and the female buckle 20 are separated from each other along the Z direction.

[0258] When it is necessary to unlock, the first button 22 is first pressed along the X direction. The first slope 221 of the first button 22 cooperates with the second slope 241 of the blocking member 24 to push the blocking member 24 along the Y direction, so that it is disengaged from the abutting portion 231 of the second button 23. Then, the second button 23 is pushed along the negative X direction to unlock the buckle 1. When the buckle 1 is unlocked, the movement of the second button 23 along the negative X direction drives the sliding seat 26 and the engaging member 25 to move. The body portion 124 of the mating portion 12 pushes the first engaging piece 251 and the second engaging piece 252 to open the first engaging piece 251 and the second engaging piece 252, and makes the engaging member 25 misaligned with the mating portion 12 in the Z direction, and the engaging piece 251 disengaged from the mating portion 12. In this way, the engaging member 25 no longer prevents the engaging portion 121 from moving along the negative Z direction. At this time, the first magnet 30 is also misaligned with the second magnet 40, so that the attractive force between the first magnet 30 and the second magnet 40 is weakened. That is, the second magnet 40 can move along with the sliding seat 26 away from the first magnet 30, so that the attractive force between the first magnet 30 and the second magnet 40 is weakened. Finally, the male buckle 10 and the female buckle 20 are separated from each other along the Z direction. ​​​

[0259] An embodiment of the present application will be described below. The same parts as those of the foregoing embodiments will be omitted to avoid repetition.

[0260] Referring to Figure 14 In the present embodiment, the first connecting hole 111 can be provided on the sidewall of the male buckle 10, and the second connecting hole 211 can be provided on the sidewall of the female buckle 20.

[0261] Referring to Figure 16 The locking portion 12 can include a clamping portion 121, a mating face 122, and a body portion 124. The body portion 124 can be formed in a cylindrical shape, and a second magnet accommodating portion 123 can be formed inside the body portion 124 to accommodate the second magnet 40. The second magnet accommodating portion 123 is open downward (in the negative Z direction) to facilitate the placement of the second magnet 40 therein. The second magnet 40 can be sealed within the locking portion 12 by means of a second cover 125 clamped with the locking portion 12. The second cover 125 can be made of plastic and fixedly connected with the male buckle 10 by means of a concave-convex fit.

[0262] A limiting rib 131 can be formed on the fitting portion 13 of the male buckle 10. A limiting protrusion 216 can be formed on the female buckle 20. When the male buckle 10 is inserted into the female buckle 20, the limiting rib 131 cooperates with the limiting protrusion 216 to limit the position of the male buckle 10 relative to the female buckle 20. That is, the cooperation of the limiting rib 131 and the limiting protrusion 216 can prevent the male buckle 10 and the female buckle 20 from moving relative to each other in the X direction and the Y direction.

[0263] A clamping groove 127 can be formed on the body portion 124. The clamping groove 127 surrounds the body portion 124 and is used to limit the first clamping piece 251 and the second clamping piece 252. The mating face 122 is flush with one end of the clamping portion 121 facing the sliding seat 26.

[0264] The operation of the buckle 1 will be described below.

[0265] When the male buckle 10 and the female buckle 20 are buckled with each other, the male buckle 10 and the female buckle 20 are moved closer to each other in the Z direction. The locking portion 12 enters the female buckle housing 21 through the mating hole 213. The first magnet 30 and the second magnet 40 attract each other to further close the male buckle 10 and the female buckle 20. At this time, the actuating inclined surface 1211 of the clamping portion 121 pushes the first clamping piece 251 and the second clamping piece 252 radially outward. After the clamping portion 121 passes through the clamping member 25, it enters the clamping cavity 262. Then, the first clamping piece 251 and the second clamping piece 252 return to the state where the clamping member is not deformed. The returned first clamping piece 251 and the second clamping piece 252 are clamped in the clamping groove 127 (as shown in FIG. 9B), and the male buckle 10 and the female buckle 20 are locked with each other. Figure 16As shown), the engaging part 121 is locked in the engaging cavity 262. When the fastener 1 is in the locked state, the blocking member 24 abuts against the abutting part 231 of the second button 23, so the second button 23 cannot move and the fastener 1 cannot be released.

[0266] When unlocking is required, firstly press the first button 22 in the X direction. The first inclined surface 221 of the first button 22 engages with the second inclined surface 241 of the blocking member 24 to push the blocking member 24 in the Y direction, thereby disengaging it from the abutment portion 231 of the second button 23. Then, push the second button 23 in the negative X direction to release the locking fastener 1. When releasing the locking fastener 1, the movement of the second button 23 in the negative X direction causes the sliding seat 26 and the engaging member 25 to move. The body portion 124 of the locking part 12 pushes the first engaging piece 251 and the second engaging piece 252 to open the first engaging piece 251 and the second engaging piece 252, and causes the engaging member 25 to be misaligned with the locking part 12 in the Z direction. In this way, the engaging member 25 disengages from the engaging groove 127 and no longer prevents the engaging part 121 from moving in the negative Z direction. At this time, the first magnet 30 is also misaligned with the second magnet 40, thereby weakening the attraction between the first magnet 30 and the second magnet 40. Finally, the male buckle 10 and the female buckle 20 separate from each other along the Z direction.

[0267] In general, the fastener 1 of this application may include a male fastener 10 and a female fastener 20. The male fastener 10 and the female fastener 20 can be engaged or disengaged. The female fastener 20 is also provided with a first magnet 30, and the male fastener 10 is provided with a second magnet 40. The magnetic poles of the two magnets are opposite. When the male fastener 10 and the female fastener 20 are engaged, no manual engagement is required. They only need to be aligned, and they will engage under the mutual attraction of the magnets. The female fastener 20 is also provided with a first button 22, a second button 23, and a blocking member 24. The second button 23 is used to release the fastener 1. Under normal conditions, the blocking member 24 prevents the movement of the second button 23. Only by pushing the first button 22 first, causing the first button 22 to move the blocking member 24 away from the second button 23, can the fastener 1 be released. It can be understood that when releasing, the first button 22 and the second button 23 can be pressed simultaneously to achieve release, thereby shortening the time required for release.

[0268] like Figure 17 As shown, in some embodiments, the locking part 12 may also be a boss provided on the mating part 13. That is, the mating part 13 may not have the surrounding hole 132 and the connecting arm 133. The locking part 12 may have an engaging groove 127. The mating part 13 may not have a limiting rib 131. Correspondingly, as Figure 18As shown, the female buckle 20 can be formed with a limiting recess 212, and the limiting recess 212 can surround the outer periphery of the fitting portion 13. That is, the limiting recess 212 surrounds the outer periphery of the fitting portion 13 in the positive X direction, the negative X direction, and the Y direction. It can be understood that in the present embodiment, the male buckle 10 and the female buckle 20 can be buckled to each other by approaching each other in the Z direction, or can be buckled to each other by approaching each other in the Y direction.

[0269] As shown, in some embodiments, the surface of the clamping member 25 can be coated with plastic to avoid part wear caused by repeated friction between the clamping member 25 and the clamping portion 121 when clamping, and to increase the strength of the clamping member 25. Figure 15

[0270] The buckle 1S of an embodiment of the present application can be used in children's safety products, such as child safety seats, child safety baskets, baby strollers, etc.

[0271] An embodiment of the present application will be described below.

[0272] Referring to Figures 19A to 20 , the buckle 1S can include a male buckle 10S and a female buckle 20S that can be insertedly fitted. The male buckle 10S and the female buckle 20S can be disposed opposite to each other in the Y direction. The female buckle 20S can include a first button 22S and a second button 23S. The first button 22S and the second button 23S can be partially exposed to the outside of the female buckle 20S. The first button 22S and the second button 23S can be disposed on both sides of the female buckle 20S in the X direction. The first button 22S and the second button 23S can be opposite to each other. The male buckle 10S can include a first connection hole 111S that can be used to be connected to a belt (not shown). In some embodiments, the first connection hole 111S can be located below the male buckle 10S. The female buckle 20S can include a second connection hole 211S that can be used to be connected to another belt (not shown). In some embodiments, the second connection hole 211S can be located below the female buckle 20S. In some embodiments, the male buckle 10S can have the first connection hole 111S on both sides in the X direction. The female buckle 20S can have the second connection hole 211S on both sides in the X direction.

[0273] Referring to Figure 21A and Figure 21B ​The female buckle 20S can have a female buckle housing 21S. The female buckle housing 21S forms the appearance of the female buckle 20S, and has a certain accommodation space inside. A first button 22S and a second button 23S can be pressed in the X direction to the inside of the female buckle housing 21S. The bottom of the female buckle housing 21S can have a docking hole 213S leading to the accommodation space of the female buckle housing 21S. The docking hole 213S can allow the mating lock portion 12S (particularly, in the Z direction) to be inserted therein. The docking hole 213S can be formed in a circular shape, but the present application is not limited thereto. The female buckle 20S can have a clamping member 25S. The clamping member 25S can be a metal sheet, but the present application is not limited thereto. The clamping member 25S can be clamped with the mating lock portion 12S to achieve locking of the male buckle 10S and the female buckle 20S. That is, the clamping member 25S can be operatively locked or unlocked with the mating lock portion 12S inserted into the docking hole 213S. In some embodiments, the female buckle housing 21S can have a connection flange 216S thereon. The connection flange 216S can be provided on the lower surface of the female buckle housing 21S (the surface on which the docking hole 213S is located), and protrude in the Z direction from the lower surface of the female buckle housing 21S. The connection flange 216S can surround the docking hole 213S by one turn or a portion thereof.

[0274] Referring to Figure 22 In an embodiment, the male buckle 10S can include a male buckle housing 11S and a fitting portion 13S. The fitting portion 13S can protrude in the Y direction from the male buckle housing 11S. The thickness (dimension in the Z direction) of the fitting portion 13S can be smaller than that of the male buckle housing 11S. The fitting portion 13S can be formed in a substantially flat plate shape, and the bottom of the fitting portion 13S can be flush with the bottom of the male buckle housing 11S, but the present application is not limited thereto. The fitting portion 13S can have the mating lock portion 12S provided thereon. The mating lock portion 12S can be connected with the fitting portion 13S via a connection recess 133S. The connection recess 133S can surround the mating lock portion 12S by one turn to be formed in a ring shape, but the present application is not limited thereto. When the male buckle 10S and the female buckle 20S are locked with each other, the connection recess 133S can cooperate with the connection flange 216S. This can increase the fitting strength and stability of the male buckle 10S and the female buckle 20S. The mating lock portion 12S can be formed in a cylindrical shape, but the present application is not limited thereto.

[0275] The outer periphery of the top of the mating lock portion 12S can form an actuating slope 121S. The mating lock portion 12S can further have a clamping groove 122S formed thereon. The clamping groove 122S can receive the clamping member 25S to be locked (this will be described in detail below).

[0276] Referring to Figure 23The female buckle 20S can have a first magnet 30S, and the male buckle 10S can have a second magnet 40S. The first magnet 30S and the second magnet 40S can attract each other. When the male buckle 10S and the female buckle 20S are buckled to each other, the first magnet 30S and the second magnet 40S can approach and align with each other along the Z direction. The male buckle 10S and the female buckle 20S can further approach and lock to each other under the attraction of the first magnet 30S and the second magnet 40S.

[0277] The inside of the matching portion 12S can have a second magnet accommodating portion 123S. The second magnet 40S is arranged in the second magnet accommodating portion 123S. In an embodiment, the second magnet accommodating portion 123S can be formed as a cavity open at the lower side. The second cover 14S is removably arranged at the lower side of the second magnet accommodating portion 123S. The second cover 14S can be a plastic cover which is connected with the second magnet accommodating portion 123S through a concave-convex fit, thereby positioning the second magnet 40S in the second magnet accommodating portion 123S.

[0278] The female buckle 20S can include a sliding seat 26S. The sliding seat 26S is slidably arranged on the female buckle housing 21S, and the second button 23 can be actuated to drive the sliding seat 26S to slide. See Figure 24 and Figure 25 In an embodiment, the sliding seat 26S can move synchronously with the second button 23S. The first magnet 30S can be arranged on the sliding seat 26S.

[0279] A first reset member 50S can be arranged between the first button 22S and the second button 23S. The first reset member 50S applies a pushing force to the first button 22S and the second button 23S away from each other. Specifically, see Figure 24 and Figure 25 In an embodiment, a first reset member 50S can be arranged between the first button 22S and the sliding seat 26S. The first reset member 50S applies a pushing force to the first button 22S and the sliding seat 26S away from each other. After the release is completed and the male buckle 10S and the female buckle 20S are separated from each other, the first button 22S and the second button 23S are released, and the elastic restoring force of the first reset member 50S pushes the first button 22S or the second button 23S to the un-actuated position along the X direction, respectively. The first reset member 50S can be a coil spring, but the application is not limited thereto.

[0280] One side of the first button 22S along the Y direction can have a pushing portion 220S. The pushing portion 220S can be formed as a triangle, but the application is not limited thereto. The pushing portion 220S is close to one side of the female buckle housing 21S along the X direction Figure 24 or Figure 25The side of the second button 23S close to the first button 22S (or the upper side in the drawing) can form a first stop 222S. The first stop 222S can abut against the female buckle housing 21S to limit the first button 22S, so as to avoid the first button 22S from sliding out of the female buckle housing 21S and separating from the female buckle housing 21S. In another embodiment, both sides of the first button 22S along the Y direction can have the first stop 222S.

[0281] The oblique side of the triangle formed by the pushing part 220S can form a first inclined surface 221S. The first inclined surface 221S can be inclined relative to the X direction.

[0282] The second button 23S can have an abutting part 231S. The abutting part 231S can be formed on one side of the second button 23S along the Y direction. Specifically, in an embodiment, the abutting part 231S and the first inclined surface 221S can be formed on the same side of the second button 23S and the first button 22S.

[0283] The female buckle 20S can include a blocking piece 24S. The blocking piece 24S can be arranged in the female buckle housing 21S and can slide a certain distance along the Y direction. The blocking piece 24S can have a second inclined surface 241S. The second inclined surface 241S can be formed on the part of the blocking piece 24S close to the first inclined surface 221S, and the second inclined surface 241S is parallel to the first inclined surface 221S. When the first button 22S is not actuated along the X direction, the blocking piece 24S abuts against the abutting part 231S in the X direction to block the second button 23S from moving in the direction of the first button 22S (i.e., along the X direction). When the first button 22S is actuated along the X direction, the second inclined surface 241S cooperates with the first inclined surface 221S to push the blocking piece 24S away from the first button 22S and the second button 23S along the Y direction, so that the blocking piece 24S no longer blocks the abutting part 231S in the X direction. When the blocking piece 24S no longer blocks the abutting part 231S in the X direction, the second button 23S can be actuated along the X direction towards the first button 22S, so as to unlock the engaging piece 25S from the mating part 12S (which will be described in detail below).

[0284] In an embodiment, since the first magnet 30S is fixedly connected with the sliding seat 26S, when the second button 23S is actuated along the X direction, the first magnet 30S also moves along the X direction.

[0285] The side of the abutting part 231S close to the female buckle housing 21S (or the lower side in the drawing) can form a second stop 232S. The female buckle housing 21S can prevent the second button 23S from sliding out of the female buckle housing 21S by abutting against the second stop 232S. Figure 24 or Figure 25 The side of the abutting part 231S close to the female buckle housing 21S (or the lower side in the drawing) can form a second stop 232S. The female buckle housing 21S can prevent the second button 23S from sliding out of the female buckle housing 21S by abutting against the second stop 232S.

[0286] The female buckle housing 21S can have a female buckle lower cover 214S and a female buckle upper cover 215S. The female buckle lower cover 214S can have a positioning piece 2141S thereon. The blocking piece 24S can have a limiting hole 243S. The limiting hole 243S has a length along the Y direction. The positioning piece 2141S can pass through the limiting hole 243S along the Z direction, thereby limiting the sliding distance of the blocking piece 24S along the Y direction.

[0287] The second reset piece 60S can be arranged between the blocking piece 24S and the female buckle housing 21S. The second reset piece 60S can exert a force on the blocking piece 24S to move towards the first button 22S and the second button 23S. The second reset piece 60S can be a spiral spring, but the present application is not limited thereto. In an embodiment, the blocking piece 24S can have a receiving groove 245S. The receiving groove 245S can be formed at an end of the blocking piece 24S away from the first button 22S and the second button 23S. The second reset piece 60S can be arranged between the female buckle lower cover 214S and the receiving groove 245S.

[0288] Referring to Figure 26 The engagement piece 25S can include a first engagement piece 251S and a second engagement piece 252S. The sliding seat 26S can drive the first engagement piece 251S and the second engagement piece 252S to be unlocked from the key part 12S at the same time. The first engagement piece 251S can be fixed or positioned on the female buckle housing 21S. The second engagement piece 252S can be fixed or positioned on the sliding seat 26S, thereby moving together with the sliding seat 26S. The second engagement piece 252S can be unlocked by moving away from the key part 12S along the X direction. The first engagement piece 251S can be unlocked by being pried open along the Y direction to release the key part 12S.

[0289] The first engagement piece 251S can include a first engagement sheet 2511S, a second engagement sheet 2512S, and a first horizontal part 2513S.

[0290] The second engagement piece 252S can include a third engagement sheet 2521S, a fourth engagement sheet 2522S, and a second horizontal part 2523S. In an embodiment, the first engagement piece 251S and the second engagement piece 252S can have the same structure.

[0291] The first engagement piece 251S can be arranged at a side of the first magnet 30S close to the second button 23S. The second engagement piece 252S can be arranged at a side of the first magnet 30S close to the first button 22S.

[0292] The first engaging piece 251S, the second engaging piece 2512S, the third engaging piece 2521S and the fourth engaging piece 2522S of the first engaging member 251S and the second engaging member 252S collectively surround the lock portion 12S, and are locked with the lock portion 12S at four different positions. The first engaging piece 2511S, the second engaging piece 2512S, the third engaging piece 2521S and the fourth engaging piece 2522S can respectively surround approximately one quarter of the circumference of the lock portion 12S, and collectively surround approximately the entire circumference, but the present application is not limited thereto.

[0293] In other embodiments, the first engaging member 251S and / or the second engaging member 252S can have only one engaging piece.

[0294] Referring to Figures 33 to 36 , the female buckle lower cover 214S and the female buckle upper cover 215S are combined with each other to form the female buckle housing 21S. A plurality of connecting holes 2142S can be formed on the female buckle lower cover 214S. A plurality of connecting fingers 2151S can be formed on the female buckle upper cover 215S. The plurality of connecting fingers 2151S and the plurality of connecting holes 2142S are formed at corresponding positions and cooperate with each other to snap fit the female buckle lower cover 214S and the female buckle upper cover 215S.

[0295] Referring to Figure 35 , the female buckle upper cover 215S can be provided with a limiting rib 2152S. The limiting rib 2152S is used to cooperate with the first button 22S to limit the movement stroke of the first button 22S, thereby preventing the first button 22S from being pressed excessively. If the first button 22S is pressed excessively, the first button 22S will occupy the movement space of the second button 23S, so that the second button 23S cannot be pressed sufficiently, thereby causing the engaging member 25S to be unlocked incompletely with the lock portion 12S. Moreover, if the first button 22S is pressed excessively, the push portion 220S on the first button 22S can be blocked by the blocking member 24S and cannot be reset. In an embodiment, the female buckle upper cover 215S can also be provided with a mounting column 2153S. The mounting column 2153S can cooperate with the positioning member 2141S to fix the female buckle upper cover 215S and the female buckle lower cover 214S to each other. The mounting column 2153S can extend into the limiting hole 243S and cooperate with the limiting hole 243S to limit the movement stroke of the blocking member 26S. The two sides of the mounting column 2153S have reinforcing ribs 2154S. The reinforcing ribs 2154S can improve the strength of the mounting column 2153S. The limiting hole 243S can have notches 2431S (see Figure 31 、 Figure 33 and Figure 36 ).

[0296] Referring to Figure 26 and Figure 27The female buckle lower cover 214S can have a first positioning block 2143S and a second positioning block 2144S. The first positioning block 2143S and the second positioning block 2144S can be arranged at intervals along the X direction. A portion of the first clamping member 251S can be located between the first positioning block 2143S and the second positioning block 2144S to be positioned by the first positioning block 2143S and the second positioning block 2144S. Specifically, the first transverse portion 2513S can be located between the first positioning block 2143S and the second positioning block 2144S. The first positioning block 2143S can be located between the first clamping piece 2511S and the second clamping piece 2512S and in contact with the first clamping piece 2511S and the second clamping piece 2512S.

[0297] In another embodiment, the first clamping member 251S can be collectively positioned by the sliding seat 26S and the female buckle lower cover 214S. Specifically, the first clamping member 251S is positioned between the sliding seat 26S and the female buckle housing 21S along the Z direction, while being blocked by the first transverse portion 2513S by the first positioning block 2143S, thereby limiting the movement of the first clamping member 251S in the X direction, and the second positioning block 2144S functions to prevent the first clamping member 251S from moving in a direction away from the first positioning block 2143S. Of course, in other embodiments, the first transverse portion 2513S of the first clamping member 251S can also be directly fixed on the female buckle housing 21S, and the present application is not limited thereto.

[0298] In another embodiment, the second positioning block 2144S can be omitted.

[0299] Referring to Figure 29 and Figure 30 Since the first clamping member 251S and the second clamping member 252S have the same structure (the first clamping piece 2511S is the same as the third clamping piece 2521S, and the second clamping piece 2512S is the same as the fourth clamping piece 2522S), only the structure of the first clamping member 251S will be described in detail below. The first clamping member 251S can be formed by bending a metal sheet. For example, the first clamping member 251S can be at least partially formed of a metal sheet (e.g., an iron sheet). The first clamping piece 2511S and the second clamping piece 2512S are symmetrically formed and located on both sides of the first clamping member 251S. The first clamping piece 2511S and the second clamping piece 2512S are connected by the first transverse portion 2513S. At least one of the first clamping piece 2511S, the second clamping piece 2512S, the third clamping piece 2521S, and the fourth clamping piece 2522S can be covered with plastic, so that when the first clamping piece 2511S, the second clamping piece 2512S, the third clamping piece 2521S, and / or the fourth clamping piece 2522S come into contact with the clamping groove 122S of the key part 12S, it is quieter and vibrates less.

[0300] The first engaging member 251S can have a driving block 2514S on one side close to the sliding seat 26S. In one embodiment, the first engaging piece 2511S and the second engaging piece 2512S can have a driving block 2514S respectively.

[0301] Two driving blocks 2514S can be formed at the outer side edges of the first engaging piece 2511S and the second engaging piece 2512S, and the outer side of the driving block 2514S is formed in a straight line shape and the inner side of the driving block 2514S is formed in a circular arc shape, but the present application is not limited thereto.

[0302] The second engaging member 252S can have a driving block 2524S on one side close to the sliding seat 26S. The third engaging piece 2521S and the fourth engaging piece 2522S can have a driving block 2524S respectively.

[0303] The sliding seat 26S can have a driving slope 2641S. When the sliding seat 26S moves along the X direction, the sliding seat 26S drives the first engaging piece 2511S to move along the Y direction through the driving slope 2641S to unlock the mating lock portion 12S. When the sliding seat 26S moves along the X direction, the sliding seat 26S drives the second engaging piece 2512S to move along the Y direction through the driving slope 2641S to unlock the mating lock portion 12S.

[0304] Referring to Figure 32A and Figure 32B , the sliding seat 26S can have a first recess 264S, and the inner side of the first recess 264S can form the driving slope 2641S. Specifically, the sliding seat 26S has one first recess 264S on each side. Referring to Figure 28 and Figure 31 , the driving blocks 2514S on the first engaging piece 2511S and the second engaging piece 2512S of the first engaging member 251S respectively extend into the two first recesses 264S. The two driving blocks 2514S on the first engaging piece 2511S and the second engaging piece 2512S respectively are located in the two first recesses 264S, and abut against the driving slope 2641S in the two first recesses 264S.

[0305] The sliding seat 26S can also have a second recess 265S. Specifically, the sliding seat 26S has one first recess 264S and one second recess 265S on each side. The first recess 264S and the second recess 265S can be arranged along the X direction. The first recess 264S and the second recess 265S can have different shapes from each other, but the present application is not limited thereto. The driving blocks 2524S on the third engaging piece 2521S and the fourth engaging piece 2522S of the second engaging member 252S respectively extend into the two second recesses 265S. The driving blocks 2524S on the third engaging piece 2521S and the fourth engaging piece 2522S are respectively located in the two second recesses 265S.

[0306] Referring to Figure 36 , the second horizontal portion 2523S of the second engaging member 252S can abut against the top (one end in the X direction) of the sliding seat 26S, so that when the sliding seat 26S moves in the X direction, the sliding seat 26S pushes the second engaging member 252S away from the mating portion 12S of the male buckle 10S through the second horizontal portion 2523S. Meanwhile, referring to Figure 31 , when the sliding seat 26S moves in the X direction, the driving slope 2641S drives the first engaging piece 2511S and the second engaging piece 2512S to move in the Y direction to the two sides to be unlocked from the mating portion 12S.

[0307] Referring to Figure 32B and Figure 36 , the sliding seat 26S can also be provided with a protruding portion 266S. The protruding portion 266S can be located between the third engaging piece 2521S and the fourth engaging piece 2522S to limit the position. In an embodiment, the sliding seat 26S can also be provided with a spring positioning portion 267S. The spring positioning portion 267S can protrude in the X direction towards the first button 22S and be connected to the first reset member 50S.

[0308] In some embodiments not shown, the second engaging member 252S can also be fixed or positioned on the female buckle housing 21S like the first engaging member 251S. In this way, when the sliding seat 26S moves in the X direction, the third engaging piece 2521S can be driven in the Y direction by the corresponding slope on the sliding seat 26S to move in the Y direction to be unlocked from the mating portion 12S. When the sliding seat 26S moves in the X direction, the fourth engaging piece 2522S can be driven in the Y direction by the corresponding slope on the sliding seat 26S to move in the Y direction to be unlocked from the mating portion 12S.

[0309] In some embodiments not shown, when the sliding seat 26S moves in the X direction, the second engaging member 252S can be pushed apart in the Y direction by the slope on the sliding seat 26S (for example, the slope at the position of the second recess 265S) to be unlocked from the mating portion 12S.

[0310] The operation process of the buckle 100S will be described below.

[0311] Referring to Figure 23 and Figure 26When the male buckle 10S and the female buckle 20S are engaged, they are brought closer together along the Z-direction. The locking part 12S enters the female buckle housing 21S through the mating hole 213S. The first magnet 30S and the second magnet 40S attract each other to bring the male buckle 10S and the female buckle 20S closer together. At this time, the actuating inclined surface 121S of the locking part 12S can push the first engaging piece 2511S and the second engaging piece 2512S to move radially outward (outward along the plane containing the X and Y directions). After the actuating inclined surface 121S passes the engaging member 25S, the first engaging piece 2511S and the second engaging piece 2512S return to their state of not moving radially outward and extend into the engaging groove 122S, so that the first engaging member 251S and the locking part 12S are locked together. In some embodiments, the first engaging member 251S returns to its undeformed state.

[0312] Furthermore, the actuating inclined surface 121S of the locking part 12S can radially outward (outward along the plane containing the X and Y directions) push the third engaging piece 2521S and the fourth engaging piece 2522S to move. After the actuating inclined surface 121S passes the engaging member 25S, the third engaging piece 2521S and the fourth engaging piece 2522S return to their state of not moving radially outward and extend into the engaging groove 122S, thereby locking the second engaging member 252S and the locking part 12S together. In some embodiments, the second engaging member 252S returns to its undeformed state.

[0313] like Figure 24 As shown, when the buckle 1S is in the locked state, the blocking member 24S abuts against the abutting part 231S of the second button 23S, so the second button 24S cannot move and the buckle 1S cannot be released.

[0314] See Figure 25 , Figure 26 , Figure 28 and Figure 31 When it is necessary to release the lock, firstly press the first button 22S inward along the X direction. The first inclined surface 221S of the first button 22S engages with the second inclined surface 241S of the blocking member 24S to push the blocking member 24S away from the first button 22S along the Y direction, thereby disengaging the blocking member 24S from its contact with the abutment portion 231S of the second button 23S. Then, press the second button 23S in the opposite direction to the movement direction of the first button 22S to release the lock 1S.

[0315] When the locking device is released for 1S, the movement of the second button 23S toward the first button 22 in the X direction causes the first magnet 30S to move. The movement of the first magnet 30S causes the first magnet 30S and the second magnet 40S to move away from each other in the X direction and no longer align with each other (i.e., they are offset from each other), thereby eliminating or reducing the attraction between the first magnet 30S and the second magnet 40S.

[0316] When the release catch 1S is released, the movement of the second button 23S along the X direction towards the first button 22 drives the movement of the sliding seat 26S. The movement of the sliding seat 26S causes the driving blocks 2514S on the first and second engaging pieces 2511S and 2512S to move relative to the driving slope 2641S of the sliding seat 26S, and the first and second engaging pieces 2511S and 2512S are pried open (open to both sides) by the driving slope 2641S to disengage from the engaging groove 122S.

[0317] When the release catch 1S is released, the movement of the second button 23S along the X direction towards the first button 22 drives the movement of the second engaging member 252S. The movement of the second engaging member 252S causes the third and fourth engaging pieces 2521S and 2522S to disengage from the engaging groove 122S. That is, when the second button 23S is actuated, the directions in which the first and second engaging pieces 2511S and 2512S disengage from the engaging groove 122S intersect with the directions in which the third and fourth engaging pieces 2521S and 2522S disengage from the engaging groove 122S. In this way, the first, second, third and fourth engaging pieces 2511S, 2512S, 2521S and 2522S are all disengaged from the engaging groove 122S, thereby causing the male buckle 10S to be unlocked from the female buckle 20S. Finally, the male buckle 10S and the female buckle 20S are separated from each other along the Z direction.

[0318] After the release is completed and the male buckle 10S and the female buckle 20S are separated from each other, the first button 22S and the second button 23S can be released respectively or simultaneously, and the first button 22S and the second button 23S are respectively pushed along the X direction to the un-actuated positions. The second reset member 60S pushes the blocking member 24S along the Y direction to the position un-actuated by the first button 22S, and blocks the movement of the second button 23 along the X direction again. In the process of the movement of the second button 23S to the un-actuated position, the sliding seat 26S, the second engaging member 252S and the first magnet 30S move together with the second button 23S to the initial position. As the sliding seat 26S moves towards the initial position, the driving slope 2641S on the sliding seat 26S gradually disengages from the abutment with the driving blocks 2514S on the first and second engaging pieces 2511S and 2512S, so that the first and second engaging pieces 2511S and 2512S return to the un-pried state under the action of the elastic restoring force of themselves.

[0319] Finally, the first, second, third and fourth engaging pieces 2511S, 2512S, 2521S and 2522S extend into the docking hole 213S for engagement with the locking portion 12S of the male buckle 10S. The first magnet 30S is aligned with the docking hole 213S to be aligned with the second magnet 40S and attracted to each other when the male buckle 10S and the female buckle 20S are mated.

[0320] An embodiment of the present application is described below.

[0321] Referring to Figure 37 and Figure 38 , the female buckle 20S can include a first button 22S and a second button 23S. The first button 22S and the second button 23S can be partially exposed to the outside of the female buckle 20S. The first button 22S and the second button 23S can be disposed on both sides of the female buckle 20S along the X direction. In some embodiments, the first button 22S and the second button 23S can be opposite to each other. The female buckle 20S can have a female buckle housing 21S. The female buckle 20S can have a clamping piece 25S. The clamping piece 25S can be clamped with the lock portion 12S (which can be referred to Figure 22 ) to achieve the locking of the male buckle 10S (which can be referred to Figure 22 ) and the female buckle 20S. The clamping piece 25S can be a metal sheet, but the present application is not limited thereto.

[0322] In some embodiments, the clamping piece 25S can be considered as an integral structure, that is, compared with the foregoing embodiments, the first clamping piece 251S and the second clamping piece 252S of the foregoing embodiments can be considered as being integrally formed.

[0323] The female buckle 20S can include a sliding seat 26S. The sliding seat 26S can be slidably disposed on the female buckle housing 21S, and the second button 23 can be actuated to drive the sliding seat 26S to slide.

[0324] In some embodiments, the sliding seat 26S can move synchronously with the second button 23S. A first return piece 50S can be disposed between the first button 22S and the spring positioning portion 267S of the sliding seat 26S. The first return piece 50S applies a pushing force away from each other to the first button 22S and the sliding seat 26S. The first return piece 50S can be a coil spring, but the present application is not limited thereto. The female buckle housing 21S can have a female buckle lower cover 214S and a female buckle upper cover 215S.

[0325] Referring to Figure 38 and Figure 39 , the female buckle lower cover 214S can have a docking hole 213S. The docking hole 213S can allow the lock portion 12S to be inserted therein. The docking hole 213S can be formed in a circular shape, but the present application is not limited thereto.

[0326] The female buckle 20S can have a slope 2146S. When the clamping piece 25S moves away from the lock portion 12S along the X direction with the sliding seat 26S, the slope 2146S can drive the clamping sheet of the clamping piece 25S to move away from the docking hole 213S along the Y direction to be unlocked with the lock portion 12S.

[0327] The female buckle 20S can have a driving inclined groove 2145S. Specifically, the female buckle lower cover 214S can have two driving inclined grooves 2145S, and the two driving inclined grooves 2145S are located on both sides of the docking hole 213S. The driving inclined groove 2145S can have an approximately triangular shape, specifically, can have a right triangle shape, but the present application is not limited thereto. The distance of the driving inclined groove 2145S from the center of the docking hole 213S along the Y direction gradually increases along the moving direction of the sliding seat 26S (e.g. Figure 39 upward along the X direction).

[0328] Referring to Figure 40 , the clamping piece 25S can only include the second clamping piece 252S. In other words, the clamping piece 25S is formed by the second clamping piece 252S, or the clamping piece 25S is equivalent to the second clamping piece 252S. The second clamping piece 252S can be formed by bending a metal sheet. For example, the second clamping piece 252S can be at least partially formed by a metal sheet (e.g., an iron sheet).

[0329] The second clamping piece 252S, for example, has a ring embracing structure. The side of the third clamping sheet 2521S and the fourth clamping sheet 2522S close to each other can form an arc shape, thereby matching the profile of the clamping groove 122S.

[0330] The second clamping piece 252S can include a third clamping sheet 2521S, a fourth clamping sheet 2522S, and a second cross portion 2523S. The third clamping sheet 2521S and the fourth clamping sheet 2522S are symmetrically formed and located on both sides of the second clamping piece 252S. One side of the third clamping sheet 2521S and the fourth clamping sheet 2522S is connected by the second cross portion 2523S. The second cross portion 2523S of the second clamping piece 252S can abut against the top (one end along the X direction) of the sliding seat 26S, so that when the sliding seat 26S moves along the X direction, the sliding seat 26S pushes the second clamping piece 252S to move along the X direction synchronously through the second cross portion 2523S. At least one of the third clamping sheet 2521S and the fourth clamping sheet 2522S can be covered with plastic, so that when the third clamping sheet 2521S and / or the fourth clamping sheet 2522S contact the clamping groove 122S (see Figure 22 ) of the lock portion 12S, it is quieter and has less vibration.

[0331] The difference between the present embodiment and the foregoing embodiments is that a driving protrusion 2525S can be formed on the clamping piece 25S. When the second button 23S is pressed to drive the clamping piece 25S to move along the X direction, the driving protrusion 2525S moves along the inclined surface 2146S, thereby being pushed outward by the two inclined surfaces 2146S.

[0332] In some embodiments, the third and fourth engaging pieces 2521S and 2522S can be formed with driving protrusions 2525S, respectively. When the sliding seat 26S moves away from the mating portion 12S along the X direction, the two inclined surfaces 2146S drive the driving protrusions 2525S of the third and fourth engaging pieces 2521S and 2522S to move away from each other along the Y direction, so that the third and fourth engaging pieces 2521S and 2522S of the second engaging member 252S are spread apart. That is, the second engaging member 252S is unlocked from the mating portion 12S along the X and Y directions.

[0333] In some embodiments, the driving protrusions 2525S are arranged at the lower end (the end close to the second button 23S along the X direction) of the second engaging member 252S. Specifically, the two driving protrusions 2525S can be arranged at the other side of the second engaging member 252S (the third and fourth engaging pieces 2521S and 2522S) away from the second horizontal portion 2523S.

[0334] Specifically, the two driving protrusions 2525S can be formed at one corner of the third and fourth engaging pieces 2521S and 2522S, respectively. The driving protrusions 2525S can be formed as cylindrical protrusions, but the present application is not limited thereto.

[0335] The driving protrusions 2525S on the third and fourth engaging pieces 2521S and 2522S are located in the two driving inclined grooves 2145S of the female buckle lower cover 214S, respectively. When the sliding seat 26S is moved along the X direction by pressing the second button 23S, the distance between the driving protrusions 2525S on the third and fourth engaging pieces 2521S and 2522S gradually increases, so that the engaging member 25S is spread apart along the Y direction.

[0336] The side of the third and fourth engaging pieces 2521S and 2522S away from the second horizontal portion 2523S can have a hook portion 2526S, respectively. The hook portion 2526S can extend from the third or fourth engaging piece 2521S or 2522S and be bent to form a shape similar to the letter "L". The sliding seat 26S can have two hook portion avoiding grooves 268S. The two hook portions 2526S can be located in the hook portion avoiding grooves 268S, respectively, to avoid the sliding seat 26S blocking the movement of the third and fourth engaging pieces 2521S and 2522S. The hook portion 2526S can be used for mold positioning. In some embodiments not shown, the hook portion 2526S can be omitted.

[0337] Referring to Figure 37 and Figure 39The second engaging member 252S can be driven to be unlocked from the mating portion 12S. The second engaging member 252S is provided on the sliding seat 26S. The third engaging piece 2521S and the fourth engaging piece 2522S of the second engaging member 252S can surround the mating portion 12S, so as to be locked with the mating portion 12S.

[0338] In some embodiments, the female buckle 20S has only one engaging member (the second engaging member 252S) which surrounds the largest diameter part of the mating portion 12S of the male buckle 10S. If the second engaging member 252S is moved away from the mating portion 12S in the X direction, the lower end of the second engaging member 252S has to pass the largest diameter part. If the lower end of the second engaging member 252S (the end close to the second button 23S in the X direction) cannot be stretched, it is difficult for the second engaging member 252S to move away from the mating portion 12S. Therefore, some embodiments can ensure that the male buckle 10S and the female buckle 20S are stably and reliably locked with each other by using only one engaging member. In the unlocking process, when the second engaging member 252S can be moved in the X direction with the sliding seat 26S, the third engaging piece 2521S and the fourth engaging piece 2522S are stretched by driving the two driving inclined grooves 2145S provided on the female buckle lower cover 214S, so as to quickly and reliably unlock the male buckle 10S and the female buckle 20S.

[0339] The operation process of the buckle 100S in some embodiments will be described below.

[0340] Referring to Figure 37 and Figure 39 , when the male buckle 10S and the female buckle 20S are buckled with each other, the male buckle 10S and the female buckle 20S are moved close to each other in the Z direction (refer to Figure 21A , Figure 21B and Figure 22 ). The mating portion 12S enters the female buckle shell 21S through the docking hole 213S. The first magnet 30S and the second magnet 40S attract each other to move the male buckle 10S and the female buckle 20S close to each other (refer to Figure 23 ). At this time, the actuating slope 121S of the mating portion 12S pushes the third engaging piece 2521S and the fourth engaging piece 2522S to move radially outward. After the actuating slope 121S passes the engaging member 25S, the third engaging piece 2521S and the fourth engaging piece 2522S return to the state of not moving radially outward and extend into the engaging groove 122S, so that the engaging member 25S and the mating portion 12S are locked with each other. In some embodiments, the second engaging member 252S returns to the state of not being deformed.

[0341] When the lock needs to be released, the first button 22S is first pressed inward along the X direction. The first inclined surface 221S of the first button 22S cooperates with the second inclined surface 241S of the blocking piece 24S to push the blocking piece 24S away from the first button 22S along the Y direction, so that the blocking piece 24S is disengaged from the abutment with the abutment part 231S of the second button 23S (see Figure 24 and Figure 25 ). Then, the second button 23S is pressed in the direction opposite to the moving direction of the first button 22S. When the second button 23S moves along the X direction, the second button 23S pushes the sliding seat 26S and the sliding seat 26S moves along the X direction together with the second button 23S. The movement of the sliding seat 26S further causes the second clamping piece 252S to move away from the lock part 12S along the X direction by pushing the second transverse part 2523S. The movement of the second clamping piece 252S causes the third clamping sheet 2521S and the fourth clamping sheet 2522S to move away from the clamping groove 122S along the X direction. At the same time, the two driving protrusions 2525S move along the inclined surfaces 2146S of the two driving inclined grooves 2145S, and are pushed outward by the two inclined surfaces 2146S, so that the third clamping sheet 2521S and the fourth clamping sheet 2522S are pried open along the Y direction and away from the clamping groove 122S. That is, when the second button 23S is actuated, the third clamping sheet 2521S and the fourth clamping sheet 2522S move away from the clamping groove 122S both along the X direction and along the Y direction. Finally, the male buckle 10S and the female buckle 20S are separated from each other along the Z direction.

[0342] In the releasing operation, the first button 22S and the second button 23S can be pressed simultaneously to release the lock, so that the time required for the releasing operation can be reduced, and the user operation is facilitated.

[0343] Figure 37 Other contents of the embodiments can be referred to the relevant descriptions of the foregoing embodiments.

[0344] In the present application, the X direction, the Y direction and the Z direction can be interchanged two by two. Preferably, the X direction (the first direction), the Y direction (the second direction) and the Z direction (the third direction) can be perpendicular two by two.

[0345] Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the present application cover any and all variations of the application that come within the scope of the general inventive concepts described herein and including all the technical equivalents or substitutions of means for performing the same function that are known to those skilled in the art from the description and practice of the present application. The specification and examples are to be considered exemplary only, with the true scope and spirit of the application indicated by the following claims.

[0346] While the application has been described with reference to exemplary embodiments, the description is illustrative and is not a limitation on the scope of the application. It is to be understood that changes and modifications can be practiced without departing from the spirit or scope of the application, which is defined by the following claims and their equivalents.

Claims

1. A fastener, characterized by, The coupling includes a male coupling element and a female coupling element, the female coupling element is connected with a first magnet, the male coupling element is connected with a second magnet, the coupling further includes a first button and a second button, the first button is arranged to operatively block the second button from being actuated, the second button is arranged to be actuated to unlock the male coupling element from the female coupling element.

2. The clasp of claim 1, wherein, The first button and the second button are slidingly arranged on the female coupling element.

3. The clasp of claim 1, wherein, The coupling further includes a blocking element, the blocking element is arranged to operatively block the second button from being actuated, movement of the first button in a first direction causes movement of the blocking element in a second direction.

4. The clasp of claim 3, wherein, The first button has a first inclined surface, the blocking element has a second inclined surface matched with the first inclined surface, movement of the first button in the first direction causes movement of the blocking element in the second direction through matching of the first inclined surface and the second inclined surface.

5. The clasp of claim 3, wherein, The male coupling element is arranged to be inserted into the female coupling element in a third direction.

6. The clasp of claim 5, wherein, The second button is actuated in a fourth direction opposite to the first direction.

7. The clasp of claim 6, wherein, The male coupling element is provided with a locking part, the female coupling element is provided with a clamping element, the clamping element is clamped with the locking part to realize locking of the male coupling element and the female coupling element. The second button is actuated to drive the clamping element to be disengaged from the locking part.

8. The clasp of claim 7, wherein, Movement of the clamping element in the fourth direction disengages the locking part, movement of the first magnet in the fourth direction away from the second magnet separates the male coupling element from the female coupling element.

9. The clasp of claim 7, wherein, The female coupling element further includes a sliding seat, the clamping element is arranged on the sliding seat and the sliding seat is connected with the second button, the second button is actuated to drive the sliding seat and the clamping element to move in the fourth direction, and the clamping element elastically deforms by abutting against the locking part during movement in the fourth direction.

10. The clasp of claim 7, wherein, The locking part includes a clamping part, when the male coupling element is inserted into the female coupling element, an actuating inclined surface on the clamping part extrudes the clamping element to deform the clamping element.

11. The clasp of claim 7, wherein, When the male coupling element is inserted into the female coupling element, the locking part moves in the third direction to extrude the clamping element to deform the clamping element, so that the locking part is clamped with the clamping element, and when the male coupling element is unlocked from the female coupling element, the clamping element moves in a fourth direction to be disengaged from the clamping of the locking part to be unlocked, the third direction and the fourth direction are staggered with each other.

12. The clasp of claim 9, wherein, The locking part contains the second magnet, the sliding seat contains the first magnet, when the male coupling element is inserted into the female coupling element, the first magnet faces the second magnet.

13. The clasp of claim 10, wherein, The clamping element includes a first clamping piece and a second clamping piece, the first clamping piece and the second clamping piece are arranged at intervals, so that the distance between the first clamping piece and the second clamping piece is less than the outer diameter of the clamping part.

14. The clasp of claim 1, wherein, A first reset element is arranged between the first button and the second button, the first reset element applies a pushing force to the first button and the second button away from each other.

15. The clasp of claim 3, wherein, The female coupling element includes a female coupling shell, a second reset element is arranged between the blocking element and the female coupling shell, the second reset element applies a force to the blocking element to move towards a position to block the second button.

16. A child safety seat comprising: The child safety seat comprises a buckle as claimed in any one of claims 1 to 15.

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