CN110495685B - Fastener - Google Patents

Abstract

The unlocking part and the functional part are arranged in the buckle, and the unlocking part can scoop two parts attracted by magnetic force to enable the two parts to be separated by a certain distance so as to weaken the magnetic attraction force, thereby being convenient for the separation of the two parts; the functional part can force the lock hole to expand, so that the lock hole part is prevented from being pressed and can not be expanded outwards in time when the locking force is overlarge. The functional part arranged inside the lock bolt can ensure that the lock hole is smoothly expanded outwards during unlocking, so that the lock bolt is ensured to be smoothly separated from the lock hole for unlocking. The buckle disclosed by the invention is humanized in operation, small in opening force required during unlocking, labor-saving in operation, capable of avoiding unlocking faults, high in practicability and suitable for large-scale popularization. The buckle of the invention can be widely applied to the parts of the child safety seat, the child push chair, the backpack, the case and the like which need to be connected in a variable state, and is particularly applicable to infant braces.

Description

Fastener

[ field of technology ]

The present invention relates to a buckle, and more particularly, to an ergonomic buckle with easy operation.

[ background Art ]

Some components of child items such as child carts, child safety seats, infant harnesses are typically connected or maintained in a state by fasteners, e.g., infant harnesses are connected and disconnected, which allows for such variable state connection by fasteners. In general, most fasteners are plug-in type safety fasteners, and the plug-in type safety fasteners require users to align and lock the male fastener and the female fastener which are matched with each other by using two hands to realize safe connection. However, in reality, a user needs to hold a child in one hand and operate the safety buckle in the other hand, so that the pluggable safety buckle is inconvenient to operate, and cannot meet the use requirements of various scenes, and therefore, the buckle is gradually used to solve the problem.

The buckle is a buckle which is locked by magnetic attraction and generally comprises a buckle seat and a buckle, wherein magnets are respectively arranged in the buckle seat and the buckle, and when the buckle seat and the buckle are mutually close to each other, the buckle can realize position correction under the attraction effect of the magnetic force and can be quickly combined together. The buckle is guided and attracted by the magnetic force, so that the buckle can be operated by a single hand of a user without alignment, and is more convenient and quick to use. The positioning and locking of the buckles are realized by utilizing the guiding action of magnetic force during locking, but the attractive force action between the magnets also makes the magnetic force to be counteracted during unlocking.

The existing buckle has various unlocking modes, for example, the unlocking is carried out in a pressing lifting mode, when the buckle is unlocked, the unlocking piece is pressed firstly to unlock the buckle, then one side of the buckle is lifted upwards to enable one ends of the magnets to be spaced apart, and after the attraction force between the magnets is weakened, the whole buckle is separated. The buckle needs to be pressed hard when being unlocked, either needs to be unlocked by two hands or can apply pressing force on the body of a passenger, and the buckle is unlocked in a lifting mode, and the buckle needs to be lifted up by overcoming magnetic force when being lifted up, so that the buckle is inconvenient to operate and labor-saving.

Another conventional unlocking method is to make the magnet misplacement by sliding and then separate the lock catch, on one hand, the lock catch needs to provide space for the magnet misplacement, so that the volume is large and the aesthetic property is required to be improved; on the other hand, the operation mode of pressing the unlocking mode is the most familiar in the daily life of the masses, but the operation mode of misplacing the magnet through sliding does not accord with the daily use habit of the masses for unlocking, and for the users who use the magnets for the first time, the users are difficult to know how to unlock, so potential safety hazards may exist in certain scenes.

To solve the above problems, the applicant has developed a magnetic buckle for facilitating unlocking by weakening the magnetic attraction force by pressing the magnets in both directions at a certain distance, and has filed a patent application No. 2019101477947. With this structure, the operation is simple, but the applicant found in practice that when the external pulling force is large, the problem that the locking bolt 21 is caught in the locking hole 17 and cannot be rapidly separated occurs occasionally, which is mainly because the size of the locking hole 17 is changed by the adjusting portion 144 being expanded outwards, the locking bolt 21 is overlapped on the adjusting portion 144 in the locked state, and when the external pulling force is large, the adjusting portion 144 may be pressed by the locking bolt 21, at this time, the elastic deformation of the connecting arm 143 and the elastic arm 146 is insufficient to expand the adjusting portion 144, and when the adjusting portion 144 is not smoothly expanded outwards, the locking hole 17 is not expanded, so that the locking bolt 21 cannot be separated from the locking hole 17 for unlocking. Therefore, with such a magnetic buckle, a problem that the lock hole 17 catches the lock tongue 21 may occur occasionally.

[ invention ]

The invention aims to solve the problems and provides the buckle which is simple and labor-saving in operation and can avoid unlocking faults.

In order to solve the above problems, the present invention provides a buckle, which includes a buckle seat component and a latch component, wherein the latch component can be inserted into the buckle seat component to lock the buckle, a lock hole into which the latch component can be inserted is provided on the buckle seat component, and a lock tongue which can be inserted into the lock hole is provided on one side of the latch component facing the buckle seat component, wherein a first magnet is provided in the buckle seat component, a second magnet whose position corresponds to the lock tongue is provided in the latch component, a movable portion which can move along a direction different from a locking direction of the buckle is provided on the buckle seat component, an unlocking portion which is linked by the movable portion and a functional portion which is linked by the movable portion to force the lock hole to expand are provided in the buckle seat component, and the unlocking portion faces the lock hole; when the lock tongue of the lock catch assembly is close to the lock hole of the lock catch seat assembly, the first magnet and the second magnet are attracted to guide the lock tongue to enter the lock hole to realize locking; when the movable part is moved to unlock, the functional part forces the lock hole to expand to assist the lock tongue and the lock hole to be separated from locking, and the unlocking part moves towards the combined part of the lock tongue and the buckle seat assembly to separate the combined part of the lock tongue and the buckle seat assembly so as to reduce the suction force between the first magnet and the second magnet to be beneficial to separating the buckle seat assembly from the buckle assembly.

The movable part is symmetrically arranged outside two sides of the buckle seat assembly, the movable part comprises a first movable part and a second movable part, first connecting arms are symmetrically arranged on two sides of the first movable part, and the first connecting arms and the first movable part are integrally formed; second connecting arms are symmetrically arranged on two sides of the second movable part, and the second connecting arms and the second movable part are integrally formed; the first connecting arm and the second connecting arm are in a disconnection relationship, and the connecting arms with symmetrical structures are formed; the first movable part, the first connecting arm, the second connecting arm and the second movable part are enclosed.

The movable parts are symmetrically arranged outside two sides of the buckle seat assembly, each movable part comprises a first movable part and a second movable part, the first movable parts are connected with the second movable parts through connecting arms, and the first movable parts, the connecting arms and the second movable parts are integrally formed or integrally connected and are connected in a ring shape and have elasticity.

The buckle seat assembly is provided with a baffle part, the baffle part is arranged between the first connecting arm and the second connecting arm, and the baffle part separates the first connecting arm from the second connecting arm; when the first movable part or the second movable part is pressed independently, one end of the first connecting arm or the second connecting arm presses the separation part to partially expand the lock hole so as not to unlock the lock hole; when the first movable part and the second movable part are pressed simultaneously, the two ends of the first connecting arm and the second connecting arm simultaneously press the separation part to uniformly expand the lock hole so as to be used for unlocking.

The connecting arms are respectively provided with an adjusting part capable of adjusting the size of the lock hole, the adjusting parts are in a surrounding shape, and an adjusting hole which is open and can be used for adjusting the size of the lock hole is formed between the adjusting parts; elastic arms are respectively arranged between the connecting arms and the adjusting parts, the elastic arms are arch-shaped and elastic, one ends of the elastic arms are connected with the connecting arms, and the other ends of the elastic arms are connected with the adjusting parts.

The adjusting part is provided with a pressed part, the connecting arm is provided with a pressing part, the pressed part and the pressing part form the functional part, and when the movable part is pressed in opposite directions to unlock, the end part of the pressing part acts on the pressed part to press the pressed part so as to force the adjusting part to expand outwards, thereby forcing the lock hole to expand.

The compression part is provided with a compression surface; the compression parts are symmetrically arranged on the adjusting parts, and the extrusion parts are symmetrically arranged on the connecting arms.

The extrusion part is positioned between the elastic arm and the unlocking part; the elastic arm, the extrusion part and the unlocking part are respectively positioned at the periphery of the adjusting part.

A limiting part for limiting the moving direction of the moving part is arranged on the buckle seat component, the unlocking part is provided with a limiting hole arranged along the moving direction of the moving part, and the limiting hole is matched with the limiting part.

The lock hole is internally provided with a guide part which can prevent the lock tongue from inclining relative to the locking direction.

The buckle seat assembly comprises a base, a fixing through hole is formed in the base, the adjusting hole is opposite to the fixing through hole, the adjusting hole and the fixing through hole form a lock hole, and when in a default state, the inner diameter of the adjusting hole is smaller than that of the fixing through hole; when the movable part is pressed in opposite directions, the adjusting part expands outwards to enable the inner diameter of the adjusting hole to be larger than the inner diameter of the fixed through hole.

A plurality of guide parts are arranged on the inner wall of the base facing the adjusting hole, the guide parts are distributed on the periphery of the fixing through hole, and the end parts of the guide parts face the fixing through hole; the guide part is integrally formed with the base, protrudes out of the inner wall of the base, is circumferentially distributed along the fixing through hole, and is flush with the circumferential wall of the fixing through hole.

The top of the guide part is provided with a magnet fixing part which is integrally formed or integrally connected with the guide part, and the magnet fixing part is opposite to the fixing through hole and is spaced from the fixing through hole; the magnet fixing part is provided with a first magnet mounting groove, and the first magnet is arranged in the first magnet mounting groove.

The present invention has an advantageous contribution in that it effectively solves the above-mentioned problems. The unlocking part and the functional part which are linked with the movable part are arranged in the buckle, and the unlocking part can scoop out two parts attracted by magnetic force so that the two parts are separated by a certain distance to weaken the magnetic attraction force, thereby being convenient for the separation of the two parts; the functional part can force the lock hole to expand, so that the lock hole part is prevented from being pressed and can not be expanded outwards in time when the locking force is overlarge. The functional part arranged inside the lock bolt can ensure that the lock hole is smoothly expanded outwards during unlocking, so that the lock bolt is ensured to be smoothly separated from the lock hole for unlocking. In addition, the key linkage piece is divided into two parts, so that the problem of single-side unlocking can be solved, unlocking is avoided when one side is pressed, and the use safety can be greatly improved. The buckle disclosed by the invention is humanized in operation, small in opening force required during unlocking, labor-saving in operation, capable of avoiding unlocking faults, high in practicability and suitable for large-scale popularization. The buckle of the invention can be widely applied to the parts of the child safety seat, the child push chair, the backpack, the case and the like which need to be connected in a variable state, and is particularly applicable to infant braces.

[ description of the drawings ]

Fig. 1 is a schematic overall structure of embodiment 1.

Fig. 2 is an exploded view of the overall structure of embodiment 1.

Fig. 3 is a schematic cross-sectional view of example 1.

Fig. 4 is a schematic cross-sectional view of example 1.

Fig. 5 is a schematic longitudinal section of example 1.

Fig. 6 is a schematic longitudinal section of example 1.

Fig. 7 is a schematic structural diagram of a key linkage of embodiment 1.

Fig. 8 is a schematic plan view of the key linkage of embodiment 1.

Fig. 9 is an exploded view of the overall structure of embodiment 2.

Fig. 10 is a schematic cross-sectional view of example 2.

Fig. 11 is a schematic longitudinal section of example 2.

Fig. 12 is a schematic longitudinal section of example 2.

Fig. 13 is a schematic diagram of the structure of the key linkage key of embodiment 2.

The buckle seat assembly 10, the base 11, the fixing through hole 111, the guide portion 112, the limit portion 113, the blocking portion 114, the guide plate 115, the magnet fixing portion 116, the upper cover 12, the magnet fixing seat 13, the first magnet mounting groove 131, the third guide inclined surface 132, the claw buckle portion 133, the support arm 134, the key linkage 14, the first key linkage 14A, the second key linkage 14B, the movable portion 141, the first movable portion 141A, the second movable portion 141B, the unlocking portion 142, the first unlocking portion 142A, the second unlocking portion 142B, the first cam surface 1421, the second cam surface 1422, the limit hole 1423, the connecting arm 143, the first connecting arm 143A, the second connecting arm 143B, the adjusting portion 144, the first adjusting portion 144A, the second adjusting portion 144B, the lap joint plane 1441, the first guide inclined surface 1442, the adjusting hole 145, the elastic arm 146A, the second elastic arm 146B, the pressing portion 148, the pressed portion 149, the pressing portion 1491, the key press portion 15, the first locking hole 16, the first locking hole 17, the second locking hole 21, the second locking hole 212.

[ detailed description ] of the invention

The following examples are further illustrative and supplementary of the present invention and are not intended to limit the invention in any way.

As shown in fig. 1 to 13, the main point of the buckle of the present invention is that the buckle is unlocked by opposite pressing on both sides, and the unlocking part 142 inside the buckle can be inserted between the two components attracted by the magnet to separate the two components when pressing, so as to weaken the magnetic force action of the magnet, and the functional part inside the buckle can force the lock hole 17 to expand, thereby unlocking conveniently and avoiding the occurrence of faults such as jamming. In addition, another point is that the key linkage 14 is divided into two parts, and the blocking part 114 is used for blocking, so that unlocking cannot be performed when the key linkage is pressed in one direction, and unlocking can be performed only when the key linkage is pressed in two directions, and thus, the unlocking is prevented from being pressed by mistake, so that the safety is improved.

Specifically, as shown in fig. 1 and 9, the buckle of the present invention includes a buckle seat assembly 10 and a buckle assembly 20. The following is a detailed description of various embodiments:

example 1

As shown in fig. 1 to 8, the buckle seat assembly 10 includes a base 11, an upper cover 12, a magnet fixing seat 13, and a key linkage 14.

As shown in fig. 1 to 8, the base 11 and the upper cover 12 are connected to each other in a butt joint manner, and an installation space is formed therebetween. The shapes of the base 11 and the upper cover 12 can be set according to the requirement. The base 11 and the upper cover 12 may be connected by fastening or screwing according to known techniques. In this embodiment, the base 11 and the upper cover 12 are connected by screw involution. For convenience of pressing in opposite directions, key holes 15 are respectively formed on opposite sides of the base 11 and the upper cover 12, so that the movable portion 141 of the key linkage 14 extends out of the base 11 and the upper cover 12 to facilitate pressing by a user. For easy connection of the webbing, a first webbing aperture 16 is provided in the base 11 or the upper cover 12. In this embodiment, the first webbing hole 16 is provided in the base 11. In order to facilitate locking the locking bolt 21, a fixing through hole 111 is provided on the base 11. The size and shape of the fixing through hole 111 may be set according to needs, and in this embodiment, the fixing through hole 111 is preferably a circular hole. The fixing through hole 111 is a part of the lock hole 17.

As shown in fig. 2, in order to prevent the latch 21 from tilting when moving, a guide 112 is provided on the inner side surface of the base 11. In this embodiment, the guide portion 112 is integrally formed with the base 11, and protrudes from a surface of the base 11 facing the upper cover 12. The guide parts 112 are distributed on the periphery of the fixing through holes 111, and the end parts of the guide parts 112 face the fixing through holes 111, so that a block is formed on the inner side of the fixing through holes 111, and the inclined state when the lock tongue 21 is inserted and separated is avoided, so that locking and unlocking are facilitated. In this embodiment, as shown in fig. 2, the guiding portion 112 is in a convex strip shape, which is circumferentially spaced around the periphery of the fixing through hole 111, and the end of the guiding portion 112 is flush with the circumferential inner wall of the fixing through hole 111.

As shown in fig. 2 to 8, the magnet fixing base 13 is used for providing a first magnet 18, which is disposed between the base 11 and the upper cover 12. The magnet fixing base 13 is provided with a first magnet mounting groove 131, the first magnet mounting groove 131 is opposite to the fixing through hole 111, and the opening direction of the first magnet mounting groove is opposite to the fixing through hole 111. A first magnet 18 is provided in the first magnet mounting groove 131. The shape and size of the first magnet 18 preferably coincide with the fixing through hole 111, in this embodiment, the first magnet mounting groove 131 is preferably a circular hole, and the first magnet 18 is preferably a circular magnet. In this embodiment, the magnet fixing base 13 is fixedly connected with the base 11 by a screw fixing manner. In other embodiments, the magnet fixing base 13 may be formed integrally with the upper cover 12 or the base 11, or fixed on the upper cover 12 or the base 11. In order to facilitate the insertion of the unlocking portion 142 between the coupling portion of the latch 21 and the buckle seat assembly 10 during unlocking to reduce the attraction between the magnets, a third guiding inclined surface 132 is provided on the outer wall of the first magnet mounting groove 131. The third guide inclined surface 132 may be annular or may be partially spaced apart from the outer wall of the first magnet mounting groove 131. In this embodiment, a third guide slope 132 is provided at a portion of the first magnet mounting groove 131 facing the unlocking portion 142. The third guide slope 132 is provided to incline the outer wall of the first magnet mounting groove 131 toward the fixing through hole 111.

As shown in fig. 2, in order to enable the first magnet 18 to have a certain degree of freedom of movement, in this embodiment, the first magnet mounting slot 131 is fixedly connected to the base 11 through the support arm 134. The support arms 134 are symmetrically arranged, and 4 support arms are provided, which are respectively formed by extending outwards and bending downwards the outer wall of the first magnet mounting groove 131. The support arm 134 arches the first magnet mounting groove 131 at the center thereof, and the support arm 134 is constructed such that it can be elastically deformed to some extent, so that the first magnet mounting groove 131 can be slightly displaced in the locking direction.

In order to facilitate the displacement and the resetting of the first magnet 18, a claw fastening portion 133 is provided on the magnet fixing base 13. In this embodiment, the claw fastening portion 133 is symmetrically disposed, and has one end connected to the outer wall of the first magnet mounting groove 131, and the other end extending outward to form a free end, so that it has a certain elasticity. The claw fastening portion 133 is arch-shaped, and the arch portion thereof abuts against the upper cover 12, thereby facilitating the restoration of the first magnet mounting groove 131. When the first magnet mounting groove 131 is pressed, the first magnet mounting groove 131 and the first magnet 18 are slightly displaced toward the upper cover 12, and at this time, the claw button part 133 is pressed; when the first magnet mounting groove 131 loses the external pressing force, the elastic force of the claw catch 133 can push the first magnet mounting groove 131 and the first magnet 18 to reset in a direction away from the upper cover 12, so that the first magnet 18 is close to the lock hole 17.

As shown in fig. 2 to 8, the key linkage 14 is disposed between the magnet fixing base 13 and the base 11, and includes a movable portion 141, an unlocking portion 142, a connecting arm 143, an adjusting portion 144, an elastic arm 146, and a functional portion. The movable portion 141, the connecting arm 143, the adjusting portion 144, the unlocking portion 142, the elastic arm 146, and the functional portion may be integrally formed, or may be fixedly connected together, and the specific materials may be set as required, for example, they may be plastic materials, or metal materials. In this embodiment, the movable portion 141, the connecting arm 143, the adjusting portion 144, the unlocking portion 142, the elastic arm 146 and the functional portion are preferably integrally formed, and are made of plastic materials.

As shown in fig. 1 to 8, the movable parts 141 are provided for the user to press, and are provided in two opposite directions, and extend to the outside through the key holes 15 on both sides of the base 11 and the upper cover 12, respectively, for pressing. The movable portion 141 may be shaped and sized as desired. To indicate how the user operates, an indication icon may be provided on the surface of the movable portion 141, as indicated by an arrow of the pressing direction.

As shown in fig. 1 to 8, the connecting arm 143 is connected between the movable portions 141, and the connecting arm 143 is connected to the movable portions 141 in a ring shape and has a certain elasticity so as to be elastically deformable. The connecting arms 143 are symmetrically connected between the movable portions 141, that is, the two connecting arms 143 have the same shape and are symmetrically positioned. Further, the connecting arms 143 are also symmetrically configured, so that the connecting arms 143 can synchronously deform outwards when the movable parts 141 are pressed towards each other; when the movable portion 141 is released, the connection arm 143 is reset to reset the synchronous outward movement of the movable portion 141. In this embodiment, the connecting arm 143 is arcuate with an opening facing inward.

As shown in fig. 1 to 8, the adjusting portion 144 is used for adjusting the size of the lock hole 17 to perform locking and unlocking. The adjusting part 144 is provided inside the connecting arm 143, and in this embodiment, four adjusting parts are provided. In other embodiments, the number may be set as desired. For example, it may be provided in two. The adjusting parts 144 are spaced from each other, and are integrally enclosed in a ring shape, and the adjusting holes 145 are enclosed in the adjusting parts, so that the size of the adjusting ring is convenient. In this embodiment, the adjusting portion 144 is symmetrically disposed with respect to a central line of the movable portion 141. The adjusting hole 145 is open and faces the fixing hole 111, and forms the lock hole 17 together with the fixing hole 111. In a default state, the inner diameter of the adjustment hole 145 is smaller than the inner diameter of the fixing through hole 111. In order to facilitate clamping the lock tongue 21, the adjusting portion 144 is in a step shape, and an overlapping plane 1441 capable of overlapping the protruding edge 212 of the lock tongue 21 is provided. In order to facilitate the locking tongue 21 to enter the adjusting hole 145, a first guiding inclined plane 1442 with a flaring shape towards the direction of the fixing through hole 111 is provided at the edge of the adjusting part 144, which has a guiding function, so that the locking tongue 21 slides into the adjusting hole 145 along the first guiding inclined plane 1442.

As shown in fig. 2 to 8, in order to facilitate the smooth entry of the locking bolt 21 into the adjusting hole 145 due to the magnetic attraction, the adjusting hole 145 should be better adapted to the extrusion of the locking bolt 21, if the adjusting portion 144 is harder and requires a larger force to be extruded, the locking bolt 21 may not smoothly enter the adjusting hole 145 under the action of the magnetic force, and in order to avoid this, in this embodiment, an elastic arm 146 is further provided between the connecting arm 143 and the adjusting portion 144, so as to provide a certain free displacement space for the adjusting portion 144, so as to be adaptable to the extrusion of the locking bolt 21. The elastic arms 146 are connected between the respective connecting arms 143 and the adjusting portion 144, respectively, and are arched to have a certain elasticity. In this embodiment, the elastic arms 146 are provided with two groups, each group of elastic arms 146 is symmetrically distributed, and each group of elastic arms 146 is respectively connected between the connecting arm 143 and the adjusting portion 144. Wherein, two elastic arms 146 of each group of elastic arms 146 are spaced apart a certain distance, and are respectively connected with one adjusting part 144. In other words, in the present embodiment, each of the spaced adjustment portions 144 is connected to the connecting arm 143 via one elastic arm 146. The elastic arm 146 may be connected to the middle of the adjusting portion 144 or may be connected to an end of the adjusting portion 144. In the present embodiment, 2 elastic arms 146 of each set of elastic arms 146 are respectively connected to the ends of the adjusting portion 144, which are close to each other. The specific shape and number of the elastic arms 146 may be set as required, which may enable the adjusting portion 144 to have a certain elastic displacement. In this embodiment, the elastic arm 146 is V-shaped, U-shaped, V-like, or U-like, and has an opening facing the fixing hole 111, one end connected to the connecting arm 143, and the other end connected to the adjusting portion 144. The elastic arm 146 may be integrally formed with the connecting arm 143 and the adjusting portion 144, or may be fixedly connected to each other, and in this embodiment, it is preferably integrally formed.

Further, as shown in fig. 2 to 8, the spaced portions between the two elastic arms 146 in each set of elastic arms 146 respectively correspond to the claw fastening portions 133 of the magnet fixing base 13, so that the claw fastening portions 133 are located between the two elastic arms 146, and thus the claw fastening portions 133 can also provide a restraining effect, so that when the connecting arms 143 are elastically deformed, the elastic arms 146 can move along the direction of the claw fastening portions 133, and the direction of the elastic deformation of the elastic arms 146 is ensured.

As shown in fig. 2, 3 and 4, in order to avoid that the adjusting portion 144 for adjusting the size of the lock hole 17 is pressed and cannot be smoothly expanded to expand the lock hole 17 during unlocking, a functional portion linked by the movable portion 141 is provided on the elastic arm 146, and the functional portion is used for forcing the adjusting portion 144 to be expanded to assist in expanding the lock hole 17 during unlocking, so as to facilitate the lock tongue 21 to be separated from the lock hole 17. The functional portion includes a pressed portion 149 and a pressing portion 148. The pressing portion 149 is provided on the regulating portion 144, the pressing portion 148 is connected to the connecting arm 143, and an end of the pressing portion 148 faces the pressing portion 149. In a default state, the end of the pressing portion 148 is spaced apart from the pressed portion 149. When the movable portion 141 is pressed toward each other, the connecting arm 143 expands outward, so that the end of the pressing portion 148 acts on the surface of the pressed portion 149, thereby pressing the pressed portion 149 to move the pressed portion 149 outward, and further driving the adjusting portion 144 to expand outward, thereby assisting in expanding the lock hole 17. The pressure receiving portion 149 may be integrally formed with the adjusting portion 144 or may be fixed to the adjusting portion 144, in this embodiment, the pressure receiving portion 149 is integrally formed with the adjusting portion 144, a pressure receiving portion 149 is provided on a surface of each adjusting portion 144, the pressure receiving portion 149 protrudes from the adjusting portion 144, a pressing surface 1491 having a guiding function is provided on the pressure receiving portion 149, and the pressing surface 1491 may act with the pressing portion 148 so that the pressing portion 148 may push the pressure receiving portion 149. The pressing portion 148 may be integrally formed with the connection arm 143, or may be fixed to the connection arm 143. In this embodiment, the pressing portion 148 and the connecting arm 143 are integrally formed, and are symmetrically disposed on the connecting arm 143 and located between the unlocking portion 142 and the elastic arm 146, and in other embodiments, the pressing portion 148 may be disposed at another location, and may press the pressed portion 149 to force the adjusting portion 144 to expand.

As shown in fig. 2 to 8, the unlocking portion 142 is used for separating the joint between the latch 21 and the buckle seat assembly 10, i.e. the bottoms of the latch 21 and the first magnet mounting groove 131, so as to weaken the attractive force between the first magnet 18 and the second magnet 22 to facilitate unlocking. The unlocking part 142 is provided on the inner side wall of the movable part 141, and is linked by the movable part 141. In this embodiment, at least two unlocking portions 142 are provided, which protrude from the inner wall of the movable portion 141, and are spaced apart from each other. The unlocking portion 142 faces the adjustment hole 145. The free end of the unlocking part 142 is provided with a wedge surface, which has a guiding function and is used for conveniently entering between the lock tongue 21 and the bottom of the first magnet mounting groove 131, so that the lock tongue 21 is separated from the first magnet mounting groove 131 by a certain distance to reduce the suction force between the first magnet 18 and the second magnet 22. The cam surfaces include a first cam surface 1421 and a second cam surface 1422, and the first cam surface 1421 and the second cam surface 1422 have opposite inclination directions and are collinear, so that the free end of the unlocking portion 142 is sharp, and has two inclined cam surfaces, thereby facilitating insertion. The inclination angle of the first inclined wedge surface 1421 is related to the inclination angle of the third guiding inclined surface 132 on the outer wall of the first magnet mounting groove 131, and the inclination angle of the first inclined wedge surface 1421 is such that it can press the third guiding inclined surface 132 to push the magnet fixing base 13 along the direction of the upper cover 12, so that the first magnet 18 can slightly move upwards. The inclination angle of the second cam surface 1422 is related to the inclination angles of the first guide inclined surface 1442 and the second guide inclined surface 213.

As shown in fig. 2 to 8, the base 11, the upper cover 12, the magnet fixing base 13, the key linkage 14, and the first magnet 18 form the fastener seat assembly 10, the base 11 is provided with a fixing through hole 111, the key linkage 14 is provided with an adjusting hole 145 with a default size smaller than the fixing through hole 111, and the fixing through hole 111 and the adjusting hole 145 form a lock hole 17. The first magnet 18 is arranged inside the buckle seat assembly 10 through the magnet fixing seat 13, is opposite to the lock hole 17, and is spaced from the lock hole 17 by a certain thickness through the magnet fixing seat 13. The movable portion 141 of the key linkage 14 is located at the outside for pressing, and the connecting arm 143 and the elastic arm 146 can be changed, so that the size and displacement of the adjusting hole 145 can be adjusted. In a default state, the adjusting hole 145 is smaller than the fixing hole 111, and the connecting arm 143 and the elastic arm 146 can be elastically changed, so that the lock tongue 21 can be extruded into the lock hole 17 and be clamped by the adjusting part 144 to realize locking; when the movable portion 141 is pressed in opposite directions, the connecting arm 143 is synchronously arched outwards, and under the action of the functional portion, the adjusting portion 144 is ensured to be expanded outwards to expand the lock hole 17, so that the lock tongue 21 can be released from the lock hole 17 to unlock, and at the same time, the unlocking portion 142 moves in opposite directions to be inserted between the lock tongue 21 and the bottom of the first magnet mounting groove 131 to separate a certain distance, so that the lock tongue 21 can be released from the lock hole 17.

As shown in fig. 2, 5 and 6, the latch assembly 20 is provided with a latch 21, and the latch 21 may be integrally formed with the latch assembly 20 or fixedly connected with the latch assembly. In this embodiment, the latch 21 is integrally formed on a surface of the latch assembly 20 facing the lock hole 17. The lock tongue 21 includes a cylindrical portion 211 and a protruding edge portion 212. The columnar portion 211 protrudes from the surface of the latch assembly 20, and the protruding edge portion 212 is disposed on a free end of the columnar portion 211 and is integrally formed with the columnar portion 211. The outer dimension of the flange 212 is larger than the outer diameter of the columnar portion 211, so that a step for clamping is formed between the flange 212 and the columnar portion 211. In this embodiment, the columnar portion 211 has a cylindrical shape, and an outer diameter thereof is smaller than an inner diameter of the fixing through hole 111. The outer diameter of the flange 212 is smaller than the inner diameter of the fixing hole 111 and larger than the inner diameter of the adjusting hole 145 in a default state. In order to facilitate the lock tongue 21 entering the lock hole 17, a second guiding inclined plane 213 with a reduced shape is provided at the free end of the protruding edge 212 of the lock tongue 21, which has guiding function. The second guiding inclined surface 213 is configured such that the convex edge 212 is integrally formed in a truncated cone shape. The inclination angle of the second guiding inclined surface 213 is identical or substantially identical to the inclination angle of the first guiding inclined surface 1442 and the second inclined wedge surface 1422. For facilitating the connection of the webbing, a second webbing aperture 23 is provided in the locking assembly 20. The structure of the second webbing aperture 23 may be provided as required.

As shown in fig. 2, 5 and 6, in order to install the second magnet 22, in this embodiment, the inside of the lock tongue 21 is hollow to form a second magnet 22 installation groove. The second magnet 22 is circular, and is fixedly installed in the installation groove of the second magnet 22.

The fastener seat assembly 10 and the fastener assembly 20 form the fastener of the present invention. When the lock tongue 21 of the latch assembly 20 approaches the lock hole 17 of the latch base assembly 10, the first magnet 18 and the second magnet 22 attract each other, so that the lock tongue 21 can be rapidly pushed into the lock hole 17. Since the connecting arm 143 and the elastic arm 146 of the key linkage 14 are elastically deformable, the size of the adjusting hole 145 is adjustable, and when the latch 21 is attracted by the first magnet 18, the latch 21 can be pushed into the lock hole 17 by the second guide inclined surface 213 pressing the first guide inclined surface 1442 of the adjusting portion 144. When the lock tongue 21 is pushed into the lock hole 17 under the action of magnetic attraction, the connecting arm 143 elastically resets to reduce the adjusting hole 145 to a default size, so that the adjusting portion 144 can be clamped at the step between the columnar portion 211 and the protruding edge portion 212 of the lock tongue 21, and the overlapping plane 1441 of the protruding edge portion 212 and the adjusting portion 144 is overlapped and cannot be actively separated from the lock hole 17, thereby achieving the locking effect.

When unlocking is needed, the movable portion 141 is pressed in opposite directions, at this time, the unlocking portion 142 moves in opposite directions along with the movable portion 141 to contact the third guiding inclined plane 132 of the first magnet mounting groove 131, the first wedge surface 1421 of the unlocking portion 142 presses the third guiding inclined plane 132 to slightly move the magnet fixing base 13 toward the upper cover 12, the first magnet 18 attracts the second magnet 22, when the magnet fixing base 13 slightly moves toward the upper cover 12, the lock tongue 21 slightly moves synchronously under the attraction of magnetic force, and the lock tongue 21 moves along the upper cover 12 to separate the convex edge 212 from the overlapping plane 1441 of the adjusting portion 144, so that the adjusting portion 144 moves more freely. While the user presses the movable portion 141 in opposite directions, the connecting arm 143 expands synchronously to drive the adjusting portion 144 to expand synchronously, and at the same time, the interaction between the pressing portion 148 and the pressed portion 149 can assist the expanding movement of the adjusting portion 144, so that the adjusting portion 144 can expand smoothly and not be pressed, and the adjusting hole 145 can be easily enlarged to prevent the protruding edge portion 212 of the lock tongue 21 from being blocked; along with the continued displacement of the unlocking portion 142, the unlocking portion 142 is squeezed into the space between the lock tongue 21 and the bottom of the first magnet mounting groove 131, so that the lock tongue 21 and the bottom of the first magnet mounting groove 131 are spaced a certain distance, the attraction between the first magnet 18 and the second magnet 22 is greatly reduced, and the lock tongue 21 can be easily separated from the lock hole 17, so as to realize the unlocking effect.

For the buckle of the present invention, the movable parts 141 are symmetrically arranged, so that a user can press the buckle in opposite directions, and the operation of the buckle is ergonomic and the operation is simple. In addition, the connecting arm 143 and the elastic arm 146 are arranged, so that the adjusting portion 144 can expand radially outwards and can displace axially, and the bolt 21 can easily press the adjusting portion 144 to enter the lock hole 17 under the action of small magnetic attraction, so that the requirement on the magnetic strength of the first magnet 18 and the second magnet 22 can be reduced. In addition, the inclined wedge surface of the unlocking portion 142 is disposed, so that the unlocking portion can be squeezed between the lock tongue 21 and the bottom of the first magnet mounting groove 131 to separate the lock tongue 21 from the bottom of the first magnet mounting groove 131, thereby greatly reducing the magnetic attraction effect, and the first magnet 18 can be moved in a direction away from the lock hole 17 to drive the lock tongue 21 to move upwards, so that the lock tongue 21 does not press the adjusting portion 144 to facilitate the expansion of the adjusting portion 144 to expand the adjusting hole 145 for unlocking, and thus the opening force can be greatly reduced. The buckle disclosed by the invention is simple to operate, labor-saving in operation and high in practicability.

Example 2

As shown in fig. 9 to 13, the buckle seat assembly 10 includes a base 11, an upper cover 12, and a key linkage 14; the key linkage 14 includes a first key linkage 14A and a second key linkage 14B that are split into two.

As shown in fig. 9 to 13, the base 11 and the upper cover 12 are connected to each other in a butt joint manner, and an installation space is formed therebetween. The shapes of the base 11 and the upper cover 12 can be set according to the requirement. The base 11 and the upper cover 12 may be connected by fastening or screwing according to known techniques. In this embodiment, the base 11 and the upper cover 12 are connected by screw involution. For convenience of pressing in opposite directions, key holes 15 are respectively formed on opposite sides of the base 11 and the upper cover 12, so that the movable portion 141 of the key linkage 14 extends out of the base 11 and the upper cover 12 to facilitate pressing by a user. For easy connection of the webbing, a first webbing aperture 16 is provided in the base 11 or the upper cover 12. In this embodiment, the first webbing hole 16 is provided in the base 11. In order to facilitate locking the locking bolt 21, a fixing through hole 111 is provided on the base 11. The size and shape of the fixing through hole 111 may be set according to needs, and in this embodiment, the fixing through hole 111 is preferably a circular hole. The fixing through hole 111 is a part of the lock hole 17.

As shown in fig. 9, in order to prevent the latch 21 from tilting when moving, a guide 112 is provided on the inner side surface of the base 11. In this embodiment, the guide portion 112 is integrally formed with the base 11, and protrudes from a surface of the base 11 facing the upper cover 12. The guide parts 112 are distributed on the periphery of the fixing through holes 111, and the end parts of the guide parts 112 face the fixing through holes 111, so that a block is formed on the inner side of the fixing through holes 111, and the inclined state when the lock tongue 21 is inserted and separated is avoided, so that locking and unlocking are facilitated. In this embodiment, as shown in fig. 9, the guiding portions 112 are circumferentially spaced apart from the outer periphery of the fixing through hole 111, and the end portions of the guiding portions 112 are flush with the circumferential inner wall of the fixing through hole 111.

As shown in fig. 9, in order to restrict the movement direction of the key linkage 14, a stopper 113 is provided on the base 11. The limiting portion 113 is in a strip shape, protrudes from the surface of the base 11, and is integrally formed with the base 11. In this embodiment, the two limiting portions 113 are symmetrically disposed on two sides of the fixing through hole 111 and located on the connecting line of the symmetrically disposed key holes 15. The limiting part 113 is used for playing a limiting and guiding role so as to ensure that the key linkage 14 keeps moving linearly along the setting direction of the limiting part 113. In this embodiment, one end of the limiting portion 113 faces the key hole 15, and the other end thereof is integrally connected or formed with the guiding portion 112. In other embodiments, the limiting portion 113 may be spaced apart from the guiding portion 112.

As shown in fig. 9, in order to prevent unlocking from being performed on one side and avoid unlocking by misoperation, the buckle of the present embodiment is configured such that the pressing portions on both sides need to be pressed simultaneously to unlock, and accordingly, in order to achieve this purpose, a blocking portion 114 is provided on the base 11. The blocking portion 114 is configured to separate and abut the first key linkage 14A and the second key linkage 14B. The baffle 114 is plate-shaped and protrudes from the surface of the base 11. The blocking part 114 is perpendicular to the moving direction of the pressing part, in this embodiment, the blocking part 114 is perpendicular to the limiting part 113, and two blocking parts are provided and symmetrically distributed on two sides of the fixing through hole 111. The end of the blocking portion 114 may be integrally formed with the guide portion 112, or may be spaced apart from the guide portion 112 by a certain distance, and in this embodiment, the blocking portion 114 is integrally formed with the guide portion 112.

In order to facilitate the installation of the first magnet 18, a magnet fixing portion 116 is provided at the top of the guide portion 112. The magnet fixing portion 116 is integrally formed or integrally connected with the guide portion 112, and faces the fixing through hole 111 with a certain distance from the fixing through hole 111. The magnet fixing portion 116 is provided with a first magnet mounting groove 131, and the first magnet mounting groove 131 is located opposite to the fixing through hole 111, and the opening direction of the first magnet mounting groove is opposite to the fixing through hole 111. A first magnet 18 is provided in the first magnet mounting groove 131. The shape and size of the first magnet 18 preferably coincide with the fixing through hole 111, in this embodiment, the first magnet mounting groove 131 is preferably a circular hole, and the first magnet 18 is preferably a circular magnet.

In addition, in order to prevent the key linkage 14 from being blocked in the key hole 15 and not being separated when being pressed, guide plates 115 are respectively arranged at two sides of the key hole 15, and the length of each guide plate 115 is slightly larger than that of the pressing part, so that when the pressing part is pressed in place, two sides of the pressing part are both restrained by the guide plates 115 and not blocked, thereby avoiding faults.

As shown in fig. 9 to 13, the key linkage 14 is disposed between the base 11 and the upper cover 12, and includes a first key linkage 14A and a second key linkage 14B that are split into two.

As shown in fig. 9 to 13, the first key linkage 14A and the second key linkage 14B are symmetrical, and are combined to form the key linkage 14.

As shown in fig. 9 to 13, the first key linkage 14A includes a first movable portion 141A, a first unlocking portion 142A, a first connecting arm 143A, a first adjusting portion 144A, a first elastic arm 146A, and a first functional portion, which are integrally formed. The second key linkage 14B includes a second movable portion 141B, a second unlocking portion 142B, a second connecting arm 143B, a second adjusting portion 144B, a second elastic arm 146B, and a second functional portion.

The first movable portion 141A and the second movable portion 141B form a movable portion 141 according to the present invention.

The first unlocking portion 142A and the second unlocking portion 142B form an unlocking portion 142 according to the present invention.

The first connecting arm 143A and the second connecting arm 143B form the connecting arm 143 according to the present invention.

The first adjusting portion 144A and the second adjusting portion 144B form an adjusting portion 144 according to the present invention.

The first resilient arm 146A and the second resilient arm 146B form a resilient arm 146 according to the present invention.

The first functional portion and the second functional portion form a functional portion according to the present invention.

The specific materials of the movable portion 141, the connecting arm 143, the adjusting portion 144, the unlocking portion 142, the elastic arm 146, and the functional portion may be any materials, such as plastic materials and metal materials. In this embodiment, it is made of plastic material.

As shown in fig. 9 to 13, the first movable portion 141A and the second movable portion 141B respectively pass through the key holes 15 on both sides of the base 11 and the upper cover 12 and protrude to the outside for pressing. The first movable portion 141A and the second movable portion 141B may be shaped and sized as desired. To indicate how the user operates, an indication icon may be provided on the surface of the movable portion 141, as indicated by an arrow of the pressing direction.

As shown in fig. 9 to 13, the first connecting arms 143A are symmetrically disposed on both sides of the first movable portion 141A; the first connecting arm 143A and the first movable portion 141A form a semi-annular structure; the second connecting arms 143B are symmetrically arranged at two sides of the second movable portion 141B, and the second connecting arms 143B and the second movable portion 141B form a semi-annular structure; when the first connecting arm 143A is aligned with the second connecting arm 143B, the first movable portion 141A, the first connecting arm 143A, the second connecting arm 143B, and the second movable portion 141B may be formed in a ring shape. The first and second connection arms 143A and 143B are arcuate, so that they have a certain amount of elastic deformation, which can be used for press deformation. When the end of the first connecting arm 143A or the second connecting arm 143B is blocked by the blocking portion 114, the first connecting arm 143A or the second connecting arm 143B is deformed by pressing the first movable portion 141A or the second movable portion 141B; when the first movable portion 141A or the second movable portion 141B is released, the first connecting arm 143A or the second connecting arm 143B is reset so that the first movable portion 141A or the second movable portion 141B is synchronously moved outward to be reset.

As shown in fig. 9 to 13, the adjusting portion 144 is used for adjusting the size of the lock hole 17 to perform locking and unlocking. The adjusting portion 144 is provided inside the connecting arm 143: the first adjusting portion 144A is provided inside the first connecting arm 143A, and the second adjusting portion 144B is provided inside the second connecting arm 143B. In this embodiment, four first adjusting portions 144A and two second adjusting portions 144B are provided. In other embodiments, the number of adjustment portions 144 may be set as desired. For example, it may be provided in two. The adjusting parts 144 are spaced from each other, and are integrally enclosed in a ring shape, and the adjusting holes 145 are enclosed in the adjusting parts, so that the size of the locking holes 17 can be conveniently adjusted. In this embodiment, the adjusting portion 144 is symmetrically disposed: the first adjusting portions 144A and the second adjusting portions 144B are symmetrical, and at the same time, the two first adjusting portions 144A are symmetrically disposed with respect to a central line of the movable portion 141, and the two second adjusting portions 144B are symmetrically disposed with respect to a central line of the movable portion 141. The adjusting hole 145 is open and faces the fixing hole 111, and forms the lock hole 17 together with the fixing hole 111. In a default state, the inner diameter of the adjustment hole 145 is smaller than the inner diameter of the fixing through hole 111. In order to facilitate clamping the lock tongue 21, the adjusting portion 144 is in a step shape, and an overlapping plane 1441 capable of overlapping the protruding edge 212 of the lock tongue 21 is provided. In order to facilitate the locking tongue 21 to enter the adjusting hole 145, a first guiding inclined plane 1442 with a flaring shape towards the direction of the fixing through hole 111 is provided at the edge of the adjusting part 144, which has a guiding function, so that the locking tongue 21 slides into the adjusting hole 145 along the first guiding inclined plane 1442.

As shown in fig. 9 to 13, in order to facilitate the smooth entry of the locking bolt 21 into the adjusting hole 145 due to the magnetic attraction, the adjusting hole 145 should be better adapted to the extrusion of the locking bolt 21, if the adjusting portion 144 is hard and needs a large force to be extruded, the locking bolt 21 may not smoothly enter the adjusting hole 145 under the action of the magnetic force, and in order to avoid this, in this embodiment, an elastic arm 146 is further provided between the connecting arm 143 and the adjusting portion 144, so as to provide a certain free displacement space for the adjusting portion 144, so as to be adaptable to the extrusion of the locking bolt 21. Specifically, a first elastic arm 146A is provided between the first connecting arm 143A and the first adjusting portion 144A, and a second elastic arm 146B is provided between the second connecting arm 143B and the second adjusting portion 144B. The elastic arm 146 is connected between the connecting arm 143 and the adjusting portion 144, and has a certain elasticity in an arch shape. In this embodiment, the elastic arms 146 are symmetrically disposed, that is, the first elastic arm 146A and the second elastic arm 146B are symmetrical, and the first elastic arm 146A and the second elastic arm 146B are also symmetrically distributed. The number of the elastic arms 146 may be set according to the need, in this embodiment, the number of the elastic arms 146 is the same as the number of the adjusting parts 144, that is, 4 elastic arms 146,2 are first elastic arms 146A and 2 second elastic arms 146B, wherein the 2 first elastic arms 146A are respectively connected between the first adjusting part 144A and the first connecting arm 143A; the 2 second elastic arms 146B are connected between the second adjusting portion 144B and the second connecting arm 143B, respectively. The elastic arm 146 may be connected to the middle of the adjusting portion 144 or may be connected to an end of the adjusting portion 144. In this embodiment, the elastic arms 146 are respectively connected to the ends of the adjusting portion 144. The specific shape and number of the elastic arms 146 may be set as required, which may enable the adjusting portion 144 to have a certain elastic displacement. In this embodiment, the elastic arm 146 is V-shaped, U-shaped, V-like, or U-like, and has an opening facing the fixing hole 111, one end connected to the connecting arm 143, and the other end connected to the adjusting portion 144. The elastic arm 146 may be integrally formed with the connecting arm 143 and the adjusting portion 144, or may be fixedly connected to each other, and in this embodiment, it is preferably integrally formed.

As shown in fig. 9 and 10, in order to avoid that the adjusting portion 144 for adjusting the size of the lock hole 17 is pressed and cannot be smoothly expanded to expand the lock hole 17 during unlocking, a functional portion linked by the movable portion 141 is provided on the key linkage 14, and the functional portion is used for forcing the adjusting portion 144 to be expanded to assist the expansion of the lock hole 17 during unlocking, so as to facilitate the lock tongue 21 to be separated from the lock hole 17. Specifically, the first key linkage 14A is provided with a first functional portion, and the second key linkage 14B is provided with a second functional portion.

The first and second functional portions include a pressed portion 149 and a pressed portion 148, respectively. The pressing portion 149 is provided on the regulating portion 144, the pressing portion 148 is connected to the connecting arm 143, and an end of the pressing portion 148 faces the pressing portion 149. In a default state, the end of the pressing portion 148 is spaced apart from the pressed portion 149. When the movable portion 141 is pressed, the end portion of the connecting arm 143 expands, and the portion close to the movable portion 141 moves inward, so that the end portion of the pressing portion 148 may act on the surface of the pressed portion 149, thereby pressing the pressed portion 149 to move the pressed portion 149 outward, and further driving the adjusting portion 144 to expand, thereby assisting in expanding the lock hole 17. The pressure receiving portion 149 may be integrally formed with the adjusting portion 144 or may be fixed to the adjusting portion 144, in this embodiment, the pressure receiving portion 149 is integrally formed with the adjusting portion 144, a pressure receiving portion 149 is provided on a surface of each adjusting portion 144, the pressure receiving portion 149 protrudes from the adjusting portion 144, a pressing surface 1491 having a guiding function is provided on the pressure receiving portion 149, and the pressing surface 1491 may act with the pressing portion 148 so that the pressing portion 148 may push the pressure receiving portion 149. The pressing portion 148 may be integrally formed with the connection arm 143, or may be fixed to the connection arm 143. In this embodiment, the pressing portion 148 and the connecting arm 143 are integrally formed, and are symmetrically disposed on the connecting arm 143 and located between the unlocking portion 142 and the elastic arm 146, and in other embodiments, the pressing portion 148 may be disposed at another location, and may press the pressed portion 149 to force the adjusting portion 144 to expand.

As shown in fig. 9 to 13, the unlocking portion 142 is configured to separate the joint between the latch 21 and the buckle seat assembly 10, that is, the bottoms of the latch 21 and the first magnet mounting groove 131, so as to weaken the attractive force between the first magnet 18 and the second magnet 22, so as to facilitate unlocking. The unlocking part 142 is provided on the inner side wall of the movable part 141, and is linked by the movable part 141. Specifically, a first unlocking portion 142A is provided on the inner wall of the first movable portion 141A, and a second unlocking portion 142B is provided on the inner wall of the second movable portion 141B. The first unlocking portion 142A protrudes from the inner wall of the first movable portion 141A, the second unlocking portion 142B protrudes from the second movable portion 141B, and the first unlocking portion 142A and the second unlocking portion 142B are spaced apart from each other. The first unlocking portion 142A and the second unlocking portion 142B face the adjustment hole 145, respectively. Wedge surfaces are respectively arranged on the free ends of the first unlocking part 142A and the second unlocking part 142B, and have guiding function and are used for conveniently entering between the lock tongue 21 and the bottom of the first magnet mounting groove 131, so that the lock tongue 21 is separated from the first magnet mounting groove 131 by a certain distance to reduce the suction force between the first magnet 18 and the second magnet 22. In addition, in order to restrict the movement direction of the first key linkage 14A and the second key linkage 14B, a limiting hole 1423 is provided in each of the first unlocking portion 142A and the second unlocking portion 142B. The limiting hole 1423 is arranged along the moving direction of the moving part 141, and the shape and the size of the limiting hole 1423 are matched with those of the limiting part 113 on the base 11; in this embodiment, the limiting hole 1423 is a strip-shaped hole, which divides the first unlocking portion 142A and the second unlocking portion 142B into two portions with parallel intervals. In other embodiments, the limiting hole 1423 may be provided as an elongated groove, which may also match the limiting portion 113 to perform a limiting guiding function. For the assembled buckle, the limiting part 113 of the base 11 is positioned in the limiting hole 1423, so as to play a role in micro-guiding.

As shown in fig. 9 to 13, the base 11, the upper cover 12, the key linkage 14, and the first magnet 18 form the fastener seat assembly 10: the base 11 is provided with a fixing through hole 111, the key linkage 14 is provided with an adjusting hole 145 with a default size smaller than that of the fixing through hole 111, and the fixing through hole 111 and the adjusting hole 145 form a lock hole 17. The first magnet 18 is disposed inside the buckle seat assembly 10 and faces the lock hole 17, and is spaced from the lock hole 17 by a certain thickness through the magnet fixing portion 116. The movable portion 141 of the key linkage 14 is located at the outside for pressing, and the connecting arm 143 and the elastic arm 146 can be changed, so that the size and displacement of the adjusting hole 145 can be adjusted. In a default state, the adjusting hole 145 is smaller than the fixing hole 111, and the connecting arm 143 and the elastic arm 146 can be elastically changed, so that the lock tongue 21 can be extruded into the lock hole 17 and be clamped by the adjusting part 144 to realize locking; when the first movable portion 141A and the second movable portion 141B are pressed against each other, the ends of the first connecting arm 143A and the second connecting arm 143B are abutted against the blocking portion 114, the first connecting arm 143A and the second connecting arm 143B are elastically deformed by the blocking of the blocking portion 114, and the adjusting portion 144 is ensured to expand the lock hole 17 under the action of the functional portion, so that the lock tongue 21 can be released from the lock hole 17 to unlock, and at the same time, the unlocking portion 142 is moved against each other to be inserted between the lock tongue 21 and the bottom of the first magnet mounting groove 131 to separate a certain distance, so that the lock tongue 21 can be released from the lock hole 17. When the first movable portion 141A or the second movable portion 141B is pressed separately, one end of the first connecting arm 143A or the second connecting arm 143B abuts against the blocking portion 114, while the other end is kept stationary, at this time, only one of the first connecting arm 143A and the second connecting arm 143B is deformed, while the other part is kept stationary, so that the lock hole 17 is only partially enlarged, while the other part is still in the state of the lock tongue 21, so that the entire lock tongue 21 cannot be released for unlocking; therefore, by providing the key linkage 14 as two parts divided into two, the problem of single-side unlocking can be effectively avoided, so that the buckle can be unlocked only when the first movable portion 141A and the second movable portion 141B are simultaneously pressed.

The structure of the latch assembly 20 is the same as that of the embodiment, and thus will not be described in detail.

The fastener seat assembly 10 and the fastener assembly 20 form the fastener of the present invention. When the lock tongue 21 of the latch assembly 20 approaches the lock hole 17 of the latch base assembly 10, the first magnet 18 and the second magnet 22 attract each other, so that the lock tongue 21 can be rapidly pushed into the lock hole 17. Since the connecting arm 143 and the elastic arm 146 of the key linkage 14 can elastically change, the size of the adjusting hole 145 can be adjusted, and when the lock tongue 21 is attracted by the first magnet 18, the lock tongue 21 can press the adjusting portion 144 to be pushed into the lock hole 17. When the lock tongue 21 is pushed into the lock hole 17 under the action of magnetic attraction, the connecting arm 143 is elastically reset to reduce the adjusting hole 145 to a default size, so that the adjusting portion 144 can be clamped at the step between the columnar portion 211 and the protruding edge portion 212 of the lock tongue 21, thereby achieving the locking effect.

When unlocking is needed, the first movable part 141A and the second movable part 141B are pressed simultaneously, at this time, the ends of the first connecting arm 143A and the second connecting arm 143B are abutted against the blocking part 114, the unlocking part 142 moves towards the joint part between the first magnet 18 and the second magnet 22 along with the opposite movement of the movable part 141, the connecting arm 143 expands synchronously to drive the adjusting part 144 to expand synchronously, and meanwhile, the pressing part 148 interacts with the pressing part 149 to assist the expanding movement of the adjusting part 144, so that the adjusting part 144 can expand smoothly and not be pressed, and the adjusting hole 145 can be easily enlarged to be incapable of clamping the convex edge part 212 of the lock tongue 21; along with the continued displacement of the unlocking portion 142, the unlocking portion 142 is squeezed into the space between the lock tongue 21 and the bottom of the first magnet mounting groove 131, so that the lock tongue 21 and the bottom of the first magnet mounting groove 131 are spaced a certain distance, the attraction between the first magnet 18 and the second magnet 22 is greatly reduced, and the lock tongue 21 can be easily separated from the lock hole 17, so as to realize the unlocking effect.

For the buckle of the present invention, the movable parts 141 are symmetrically arranged, so that a user can press the buckle in opposite directions, and the operation of the buckle is ergonomic and the operation is simple. In addition, the connecting arm 143 and the elastic arm 146 are arranged, so that the adjusting part 144 can expand radially outwards, and the bolt 21 can easily press the adjusting part 144 to enter the lock hole 17 under the action of small magnetic attraction, so that the requirement on the magnetic strength of the first magnet 18 and the second magnet 22 can be reduced. In addition, the unlocking part 142 can be arranged to conveniently scoop out the joint part of the first magnet 18 and the second magnet 22, thereby reducing the magnetic force effect to facilitate unlocking; the magnet mounting groove is fixedly formed on the guide part 112, and the distance between the magnet mounting groove and the lock hole 17 is constant, so that the magnet mounting groove does not press the adjusting part 144 to obstruct the expansion of the adjusting part 144, and the problem that the adjusting part 144 is blocked and cannot be unlocked is avoided; the key linkage member 14 is divided into two parts, so that the problem of single-side unlocking can be effectively avoided, the first movable part 141A or the second movable part 141B cannot be unlocked when being pressed in one direction, and the unlocking can be performed only by pressing at the same time, so that the safety can be improved. The buckle disclosed by the invention is simple to operate, labor-saving in operation, high in safety and high in practicability.

Although the present invention has been disclosed by the above embodiments, the scope of the present invention is not limited thereto, and each of the above components may be replaced with similar or equivalent elements known to those skilled in the art without departing from the spirit of the present invention.

Claims (11)

1. A buckle comprising a buckle seat component (10) and a buckle component (20), wherein the buckle component (20) can be inserted into the buckle seat component (10) to lock the buckle, a lock hole (17) into which the buckle component (20) can be inserted is formed in the buckle seat component (10), a lock tongue (21) which can be inserted into the lock hole (17) is formed on one side, facing the buckle seat component (10), of the buckle component (20), the buckle is characterized in that a first magnet (18) is arranged in the buckle seat component (10), a second magnet (22) which is positioned corresponding to the lock tongue (21) is arranged in the buckle component (20), a movable part (141) which can move along a direction different from the locking direction of the buckle is arranged on the buckle seat component (10), an unlocking part (142) which is linked by the movable part (141) and a functional part (142) which is linked by the movable part (141) to force the lock hole (17) are arranged in the buckle seat component (10), and the unlocking part (142) is expanded towards the lock hole (17); when the lock tongue (21) of the lock catch assembly (20) is close to the lock hole (17) of the buckle seat assembly (10), the first magnet (18) and the second magnet (22) are attracted to guide the lock tongue (21) to enter the lock hole (17) to realize locking; when the movable part (141) is moved to unlock, the functional part forces the lock hole (17) to expand to assist the lock tongue (21) to be disengaged from the lock hole (17), the unlocking part (142) moves towards the position where the lock tongue (21) is combined with the buckle seat assembly (10) to separate the position where the lock tongue (21) is combined with the buckle seat assembly (10) from each other, and the suction force between the first magnet (18) and the second magnet (22) is reduced to facilitate the separation of the buckle seat assembly (10) from the buckle assembly (20);

The movable part (141) is symmetrically arranged outside two sides of the buckle seat assembly (10), the movable part (141) comprises a first movable part (141A) and a second movable part (141B), the two sides of the first movable part (141A) are symmetrically provided with first connecting arms (143A), and the two sides of the second movable part (141B) are symmetrically provided with second connecting arms (143B); -said first connecting arm (143A) and said second connecting arm (143B) are in a disconnected relationship;

a blocking part (114) is arranged on the buckle seat assembly (10), the blocking part (114) is arranged between the first connecting arm (143A) and the second connecting arm (143B), and the blocking part (114) separates the first connecting arm (143A) from the second connecting arm (143B); when the first movable part (141A) or the second movable part (141B) is pressed independently, one end of the first connecting arm (143A) or the second connecting arm (143B) presses the baffle part (114) to locally expand the lock hole (17) so as not to unlock; when the first movable part (141A) and the second movable part (141B) are pressed simultaneously, the two ends of the first connecting arm (143A) and the second connecting arm (143B) simultaneously press the baffle part (114) to uniformly expand the lock hole (17) for unlocking.

2. The fastener according to claim 1, characterized in that the first connecting arm (143A) is integrally formed with the first movable portion (141A); the second connecting arm (143B) and the second movable part (141B) are integrally formed; the first connecting arm (143A) and the second connecting arm (143B) form a connecting arm (143) with a symmetrical structure; the first movable part (141A), the first connecting arm (143A), the second connecting arm (143B) and the second movable part (141B) are enclosed.

3. The fastener according to claim 2, wherein the connecting arms (143) are respectively provided with adjusting parts (144) capable of adjusting the size of the lock holes (17), the adjusting parts (144) are in a surrounding shape, and an adjusting hole (145) which is in an open shape and can be used for adjusting the size of the lock holes (17) is formed between the adjusting parts; elastic arms (146) are respectively arranged between the connecting arms (143) and the adjusting parts (144), the elastic arms (146) are arch-shaped and elastic, one ends of the elastic arms (146) are connected with the connecting arms (143), and the other ends of the elastic arms are connected with the adjusting parts (144).

4. A fastener according to claim 3, characterized in that a pressure receiving portion (149) is provided on the adjusting portion (144), a pressing portion (148) is provided on the connecting arm (143), the pressure receiving portion (149) and the pressing portion (148) form the functional portion, and when the movable portion (141) is pressed toward each other to unlock, an end portion of the pressing portion (148) acts on the pressure receiving portion (149) to press the pressure receiving portion (149) to force the adjusting portion (144) to expand outward, thereby forcing the lock hole (17) to expand.

5. The fastener according to claim 4, characterized in that a pressing surface (1491) is provided on the pressed portion (149); the compression part (149) is symmetrically arranged on the adjusting part (144), and the extrusion part (148) is symmetrically arranged on the connecting arm (143).

6. The clasp of claim 4, wherein the compression portion (148) is located between the resilient arm (146) and the unlocking portion (142); the elastic arm (146), the pressing part (148) and the unlocking part (142) are respectively positioned at the periphery of the adjusting part (144).

7. The fastener according to claim 1, wherein a limiting portion (113) for restricting the moving direction of the moving portion (141) is provided on the fastener seat assembly (10), and a limiting hole (1423) provided along the moving direction of the moving portion (141) is provided on the unlocking portion (142), and the limiting hole (1423) is matched with the limiting portion (113).

8. The fastener according to claim 1, characterized in that a guide (112) is provided in the lock hole (17) for preventing the lock tongue (21) from tilting relative to the locking direction.

9. A fastener according to claim 3, wherein the fastener seat assembly (10) comprises a base (11), a fixing through hole (111) is formed in the base (11), the adjusting hole (145) is opposite to the fixing through hole (111), the adjusting hole (145) and the fixing through hole (111) form the lock hole (17), and in a default state, the inner diameter of the adjusting hole (145) is smaller than the inner diameter of the fixing through hole (111); when the movable portion (141) is pressed toward each other, the regulating portion (144) expands outward so that the inner diameter of the regulating hole (145) is larger than the inner diameter of the fixing through hole (111).

10. The fastener according to claim 9, characterized in that a plurality of guide portions (112) are provided on the inner wall of the orientation adjustment hole (145) of the base (11), the guide portions (112) are distributed on the periphery of the fixing through hole (111), and the end portions of the guide portions (112) face the fixing through hole (111); the guide part (112) and the base (11) are integrally formed, the guide part protrudes out of the inner wall of the base (11) and is circumferentially distributed along the fixing through hole (111), and the end part of the guide part (112) is flush with the circumferential wall of the fixing through hole (111).

11. The fastener according to claim 10, characterized in that a magnet fixing portion (116) integrally formed or connected with the guide portion (112) is provided at the top of the guide portion, the magnet fixing portion (116) facing the fixing through hole (111) and being spaced apart from the fixing through hole (111); the magnet fixing part (116) is provided with a first magnet mounting groove (131), and the first magnet (18) is mounted in the first magnet mounting groove (131).