CN110432596B - Fastener - Google Patents

Abstract

The lock of the invention is provided with the unlocking linkage piece, which is linked by the unlocking operation piece, and the limitation on the lock tongue is relieved by staggering the elastic adjusting hole and the fixing hole, so that the lock tongue can freely enter and exit the lock hole to release the lock. Furthermore, the guide part is provided with a guide surface capable of guiding the lock tongue to move in a direction away from the second connecting module, and the guide surface can further assist the first connecting module to be separated from the second connecting module. Furthermore, the invention is also provided with a third magnet, when the elastic adjusting hole is staggered with the fixing hole, the third magnet can move to the position corresponding to the first magnet to generate a repulsive action on the first magnet, so that the lock tongue can be used for being repelled from the lock hole to separate the first connecting module from the second connecting module.

Description

Fastener

[ field of technology ]

The present invention relates to buckles, and more particularly, to an ergonomic buckle that is easy to operate.

[ 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 problem is solved by gradually using the magnetic buckle.

The magnetic buckle is a buckle for locking through magnetic attraction, and generally comprises a second connecting module and a first connecting module, wherein magnets are respectively arranged in the second connecting module and the first connecting module, and when the second connecting module and the first connecting module are close to each other, the position can be guided under the attraction effect of the magnetic force, and the second connecting module and the first connecting module can be combined together quickly. The magnetic hasp is guided and attracted by the magnetism, so that the magnetic hasp can be operated by a single hand of a user without alignment of the user, and is more convenient and quick to use. The magnetic buckle realizes positioning and locking among the buckles by utilizing the guiding action of magnetic force during locking, but the attraction action among the magnets also makes the magnetic force to be resisted during unlocking.

The existing magnetic hasp has various unlocking modes, for example, unlocking is carried out in a pressing lifting mode, when unlocking is carried out, an unlocking piece is pressed firstly to unlock the first connecting module, then one side of the first connecting module 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 first connecting module is separated. The magnetic hasp needs to be pressed hard when being unlocked, either needs to be unlocked through two hands operation or can apply pressing force on the body of a passenger, and the magnetic hasp is unlocked in a lifting mode, and when the magnetic hasp is lifted, the magnetic hasp needs to be lifted with large force to unlock, so that the magnetic hasp is inconvenient to operate and is laborious.

In summary, the conventional buckle is convenient to lock, but the unlocking mode of the conventional buckle needs to be improved to more conform to the daily use habit of the public, and is more labor-saving and easy to operate.

[ invention ]

The present invention is directed to solving the above-mentioned problems, and provides a buckle that is convenient to use and ergonomic.

In order to achieve the above object, the present invention provides a buckle, comprising:

the first connecting module is provided with a convex lock tongue;

The second connecting module is provided with a fixing hole for the lock tongue to freely go in and out;

the unlocking operation piece is arranged on the second connection module and can move along a direction different from the locking direction so as to unlock the first connection module and the second connection module;

wherein the first connecting module and the second connecting module can be locked together and released by the unlocking operation piece,

characterized in that it further comprises:

the unlocking linkage piece is arranged on the second connecting module and is linked by the unlocking operation piece; an elastic adjusting hole is formed in the unlocking linkage piece, and the elastic adjusting hole can deform along a direction different from the locking direction; under the linkage of the unlocking operation piece, the unlocking linkage piece at least has a first position state and a second position state,

when in a first position state, the elastic adjusting hole corresponds to the position of the fixing hole, and the lock tongue can be extruded into the elastic adjusting hole to lock the first connecting module and the second connecting module;

when the elastic adjusting hole is in a second position state, the elastic adjusting hole is staggered with the fixing hole, and the locking can freely enter and exit the fixing hole to release and lock the first connecting module and the second connecting module.

Further, a first magnet is arranged in the first connecting module, a second magnet is arranged in the second connecting module, the position of the first magnet corresponds to the position of the lock tongue, and the position of the second magnet corresponds to the position of the fixing hole; when the lock tongue is close to the fixing hole, the first magnet and the second magnet attract each other to guide the lock tongue to enter the fixing hole and the elastic adjusting hole.

Further, the unlocking linkage piece and the unlocking operation piece are integrally formed or are connected together in a linkage way.

Further, at least one elastic arm group is arranged on the unlocking linkage piece, the elastic arm group comprises a first elastic arm and a second elastic arm which are arranged at intervals, a first clamping table is arranged on the first elastic arm, a second clamping table is arranged on the second elastic arm, the first clamping table and the second clamping table are opposite to form a clamping table with an opening, and the elastic adjusting hole is formed in the clamping table.

Further, a movable space for the lock tongue to freely go in and out is arranged outside the clamping table, the movable space is communicated with the elastic adjusting hole through the opening, when the unlocking linkage piece is changed from the first position state to the second position state, the elastic adjusting hole moves to a position staggered from the fixing hole, and the movable space moves towards the lock tongue to a position corresponding to the fixing hole.

Further, the movable space is formed between the first elastic arm and the second elastic arm, a guiding part is arranged at the position, opposite to the opening, of the movable space, a guiding surface is arranged on the guiding part, the guiding surface is spaced from the opening and faces the opening, and the guiding surface can guide the lock tongue in a direction far away from the second connecting module.

Furthermore, the first clamping table and the second clamping table are respectively provided with an introduction surface capable of guiding the lock tongue into the elastic adjusting hole.

Further, a third magnet is arranged on the unlocking linkage piece, and the position of the third magnet is staggered with the position of the fixing hole in the first position state; in the second position state, the third magnet corresponds to the position of the fixing hole; when the first position state is changed to the second position state, the third magnet and the first magnet repel each other to discharge the lock tongue from the fixing hole so as to separate the first connecting module from the second connecting module.

Further, the unlocking operation member rotates or slides to change from the first position state to the second position state in linkage with the unlocking linkage member.

Further, the unlocking linkage piece comprises at least two connecting arms, one ends of the connecting arms are integrally formed to form a connecting portion, the other ends of the connecting arms are spaced to form free ends, the free ends of the connecting arms are respectively provided with an elastic arm group, the connecting portion is rotationally connected with the second connecting module through a first rotating shaft, an acting portion is arranged on one side, deviating from the connecting arms, of the connecting portion, and the unlocking operation piece can act on the acting portion to drive the unlocking linkage piece to rotate around the first rotating shaft to enable the unlocking linkage piece to change from a first position state to a second position state.

Further, the unlocking operation piece comprises a first operation piece and a second operation piece, the first operation piece and the second operation piece are arranged on two sides of the second connection module, the first operation piece is opposite to the second operation piece, the first operation piece is movably connected with the end part of the action part, the second operation piece is abutted to the side wall of the action part, and when the first operation piece and the second operation piece are pressed in opposite directions, the unlocking linkage piece rotates around the first rotating shaft and is changed from a first position state to a second position state.

Further, the unlocking operation piece is arranged on one side of the second connection module, the unlocking operation piece is movably connected with the end part of the action part, and when the unlocking operation piece is pressed, the unlocking linkage piece rotates around the first rotating shaft.

Further, the unlocking operation member and the unlocking linkage member are integrally formed, a push-pull part is arranged on the unlocking operation member, the unlocking operation member can slide along the direction perpendicular to the locking direction, and when the unlocking operation member is pushed to slide, the unlocking linkage member is changed from the first position state to the second position state.

The present invention has an advantageous contribution in that it effectively solves the above-mentioned problems. The lock of the invention is provided with the unlocking linkage piece, which is linked by the unlocking operation piece, and the limitation on the lock tongue is relieved by staggering the elastic adjusting hole and the fixing hole, so that the lock tongue can freely enter and exit the lock hole to release the lock. Furthermore, the guide part is provided with a guide surface capable of guiding the lock tongue to move in a direction away from the second connecting module, and the guide surface can further assist the first connecting module to be separated from the second connecting module. Furthermore, the invention is also provided with a third magnet, when the elastic adjusting hole is staggered with the fixing hole, the third magnet can move to the position corresponding to the first magnet to generate a repulsive action on the first magnet, so that the lock tongue can be used for being repelled from the lock hole to separate the first connecting module from the second connecting module. The buckle disclosed by the invention is novel in unlocking principle, small in required opening force, convenient for a user to operate, ergonomic, simple and labor-saving in operation, strong in practicality and suitable for being widely popularized, and has the characteristics of convenience in use. The buckle of the invention can be widely applied to the parts of the child safety seat, the baby carriage, the high dining chair, the bicycle trailer, the bicycle child seat and the like which need to be connected in a variable state, and is particularly applicable to the baby carriage and the child push chair.

[ description of the drawings ]

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

Fig. 2 is a schematic exploded view of the structure of embodiment 1.

Fig. 3 is a schematic exploded view of the structure of embodiment 1.

Fig. 4 is a schematic structural view of the unlocking link of embodiment 1.

Fig. 5 is a schematic overall structure of embodiment 2.

Fig. 6 is a schematic exploded view of the structure of embodiment 2.

Fig. 7 is a schematic exploded view of the structure of embodiment 2.

Fig. 8 is a schematic overall structure of embodiment 3.

Fig. 9 is a schematic exploded view of the structure of embodiment 3.

Fig. 10 is a schematic exploded view of the structure of embodiment 3.

Fig. 11 is a schematic structural view of the unlocking linkage and unlocking operation member of embodiment 3.

Fig. 12 is a schematic partial structure of embodiment 4.

Fig. 13 is a partial schematic view in a first position state.

Fig. 14 is a partial schematic view in a second position state.

The first connection module 10, the latch 11, the column portion 111, the flange portion 112, the guide slope 113, the first magnet 12, the first groove 13, the second connection module 20, the unlocking operation piece 21, the first operation piece 211, the first pressing head 2111, the first link 2112, the second rotation shaft 2113, the second operation piece 212, the second pressing head 2121, the second link 2122, the push-pull portion 213, the unlocking link 22, the elastic adjustment hole 221, the connection arm 222, the connection portion 223, the rotation shaft hole 2231, the acting portion 224, the connection hole 2241, the elastic arm group 225, the first elastic arm 2251, the second elastic arm 2252, the holding table 226, the first holding table 2261, the second holding table 2262, the opening 227, the guide surface 228, the guide wall 229, the movable space 2210, the guide portion 2211, the first support rod 2212, the second support rod 2213, the housing 23, the first housing 231, the second housing 232, the button hole 233, the fixing hole 234, the first rotation shaft 235, the limit portion 236, the limit portion 24, the third magnet 25.

[ 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 14, the buckle of the present invention includes a first connection module 10 and a second connection module 20. The second connection module 20 includes an unlock operation member 21 and an unlock linkage 22.

As shown in fig. 1 to 14, the first connection module 10 and the second connection module 20 may be locked, the first connection module 10 is provided with a protruding lock tongue 11, the second connection module 20 is provided with a lock hole, the lock hole includes a fixing hole 234 and an elastic adjusting hole 221, the fixing hole 234 may allow the lock tongue 11 to freely go in and out, and the elastic adjusting hole 221 may be elastically deformed and may clamp the lock tongue 11, so as to be used for locking the first connection module 10 and the second connection module 20.

As shown in fig. 1 to 14, the second connection module 20 can be used for a locking connection with at least one first connection module 10. The number of the first connection modules 10 may be set as required, and may be two, three, four, five or more. The number of the bolts 11 on the first connection module 10 may be set according to needs, and at least one bolt 11 is disposed on each first connection module 10. Typically, a first connecting module 10 is provided with a locking tongue 11. In some cases, a plurality of bolts 11 may also be provided on one first connecting module 10 to lock with the second connecting module 20.

As shown in fig. 1 to 14, the number of locking holes on the second connection module 20 is identical to the total number of locking tongues 11 of the first connection module 10. When only one lock tongue 11 is provided on the first connection module 10, the number of lock holes is identical to that of the first connection module 10. When the first connecting module 10 is provided with a plurality of bolts 11, the number of the lock holes is several times that of the first connecting module 10.

As shown in fig. 1 to 14, the unlocking operation member 21 is for operating unlocking, which is movable in a direction different from the locking direction to unlock the first connection module 10 and the second connection module 20. The unlocking operation member 21 may be operated in a sliding manner, a pressing manner, or a rotating manner.

As shown in fig. 1 to 14, the unlock link 22 is linked by an unlock operation member 21, and is provided on the second connection module 20. The unlocking linkage 22 is provided with the elastic adjusting hole 221. The unlocking linkage 22 is integrally formed with the unlocking operation member 21, or is linked together. The unlocking link 22 is interlocked with the unlocking operation member 21 to change the position state under the action of the unlocking operation member 21. The unlocking linkage 22 has at least a first position state and a second position state.

As shown in fig. 13, the first position state is a locked state, which is a default state. In this state, the elastic adjustment hole 221 corresponds to the position of the fixing hole 234, and at this time, the latch 11 of the first connection module 10 may press the elastic adjustment hole 221 to be pushed into the elastic adjustment hole 221 and be clamped, thereby locking the first connection module 10 and the second connection module 20.

As shown in fig. 14, the second position state is a lock release state, in which the elastic adjustment hole 221 is offset from the fixing hole 234, and at this time, the locking tongue 11 of the first connection module 10 loses the holding restriction and can freely enter and exit in the fixing hole 234, so that the first connection module 10 and the second connection module 20 can be released.

As shown in fig. 1 to 14, in order to facilitate the locking of the first connection module 10 and the second connection module 20, a first magnet 12 is provided in the first connection module 10, and a second magnet 24 is provided in the second connection module 20. The position of the first magnet 12 corresponds to the position of the locking tongue 11, and the position of the second magnet 24 corresponds to the position of the fixing hole 234. When the lock tongue 11 approaches the fixing hole 234, the first magnet 12 and the second magnet 24 attract each other, and the magnetic attraction force can guide the lock tongue 11 to enter the lock hole, so that the first connection module 10 and the second connection module 20 are conveniently and quickly locked together.

Further, as shown in fig. 12, in order to facilitate the ejection of the first connection module 10 from the second connection module 20 during unlocking, a third magnet 25 is provided on the unlocking link 22. In the first position, i.e., the locked position, the third magnet 25 is offset from the fixing hole 234, so that the third magnet 25 cannot interact with the first magnet 12. In the second position, i.e. the release position, the third magnet 25 corresponds to the position of the fixing hole 234, so that the third magnet 25 can interact with the first magnet 12; when the unlocking linkage 22 is changed from the first position to the second position, the third magnet 25 moves from a position away from the first magnet 12 to a position corresponding to the fixing hole 234, and the third magnet repels the first magnet 12 to repel the lock tongue 11 from the fixing hole 234, so as to separate the first connecting module 10 and the second connecting module 20, thereby improving the unlocking effect.

As shown in fig. 4 and 11, at least one elastic arm group 225 is provided on the unlocking link 22. The elastic arm group 225 and the lock release linkage are integrally formed. The number of spring arms 225 is related to the number of locking holes. A set of resilient arms 225 corresponds to a locking aperture. The elastic arm group 225 includes a first elastic arm 2251 and a second elastic arm 2252, which are disposed at intervals, respectively. The first elastic arm 2251 and the second elastic arm 2252 have a certain length, which are all in cantilever shape, in other words, one ends of the first elastic arm 2251 and the second elastic arm 2252 are connected with the unlocking linkage 22 to form a fixed end, and the other ends thereof are extended to form a free end to form a moving end, so that the first elastic arm 2251 and the second elastic arm 2252 can perform small-amplitude elastic swinging with the fixed end as a fulcrum, and can be used for adjusting the size of the elastic adjusting hole 221.

As shown in fig. 4 and 11, a first catch 2261 is provided on the first elastic arm 2251, a second catch 2262 is provided on the second elastic arm 2252, and the first catch 2261 and the second catch 2262 are opposed to each other to form a catch 226 having an opening 227.

As shown in fig. 4 and 11, the first catch 2261 is integrally formed with the first elastic arm 2251, the second catch 2262 is integrally formed with the second elastic arm 2252, and the first elastic arm 2251 and the second elastic arm 2252 are integrally formed with the unlocking link 22.

As shown in fig. 4 and 11, the elastic adjustment hole 221 is formed in the holding base 226. The shape of the elastic adjustment hole 221 is matched with the shape of the locking bolt 11, and the locking bolt 11 is generally cylindrical, so the elastic adjustment hole 221 is preferably a circular hole. Because the first elastic arm 2251 and the second elastic arm 2252 can elastically swing, and the clamping platform 226 is provided with the opening 227, the clamping platform 226 can be extruded to expand outwards, so that the elastic adjusting hole 221 is enlarged to facilitate the extrusion of the locking bolt 11.

As shown in fig. 4 and 11, the number of the openings 227 of the clamping table 226 may be set according to needs, and at least one opening 227 is provided to facilitate the extrusion deformation of the elastic adjustment hole 221. In this embodiment, the holding stand 226 is provided with two openings 227 formed by spacing the ends of the first holding stand 2261 and the second holding stand 2262. In other embodiments, the first clamping table 2261 and/or the second clamping table 2262 may be provided with an opening 227, so that the clamping table 226 formed by combining the first clamping table 2261 and the second clamping table 2262 has the opening 227, thereby achieving similar technical effects.

In the default state, the inner diameter of the holding stand 226 is smaller than the outer diameter of the locking bolt 11. When the lock tongue 11 is to be inserted into the lock hole, the lock tongue 11 presses the clamping table 226 to expand the clamping table 226, so that the lock tongue 11 can be extruded into the elasticity adjusting hole 221 and clamped by the clamping table 226, and the lock tongue 11 cannot be separated from the lock hole along the direction opposite to the locking direction, thereby realizing the locking connection of the first connection module 10 and the second connection module 20.

As shown in fig. 4 and 11, in order to facilitate the locking and squeezing into the elastic adjustment hole 221, the first locking stand 2261 and the second locking stand 2262 are respectively provided with an introduction surface 228, and the introduction surface 228 is inclined, has a certain angle with the locking direction, and has a certain angle with the radial direction of the elastic adjustment hole 221, so that the inlet direction of the locking stand 226 is flared, and the locking tongue 11 is convenient to squeeze the locking stand 226 and squeeze into the elastic locking hole.

As shown in fig. 4 and 11, in order to facilitate the disengagement of the locking bolt 11 from the locking hole without tilting, a guide wall 229 is provided on a side of the retaining base 226 facing away from the entrance direction. The guide wall 229 is integrally formed with the catch 226. The guiding wall 229 is perpendicular to the retaining table 226 and is in a surrounding shape, and is parallel to the locking direction, so as to prevent the locking bolt 11 from tilting relative to the locking direction, and prevent the locking bolt 11 from being askew and being hooked in the retaining table 226 to prevent the locking from being released.

As shown in fig. 4 and 11, in order to facilitate the locking bolt 11 to release from the locking hole, a movable space 2210 is provided outside the holding table 226 for the locking bolt 11 to freely go in and out. The movable space 2210 cannot limit the lock tongue 11, so that the lock tongue 11 can freely enter and exit the lock hole to release the lock. The movable space 2210 is communicated with the elasticity adjusting hole 221 through the opening 227. In the first position, the movable space 2210 is offset from the fixed hole 234. In the second position, the movable space 2210 faces the fixed hole 234. When the unlocking linkage 22 is changed from the first position to the second position, the elastic adjusting hole 221 moves to a position offset from the fixing hole 234, the movable space 2210 moves toward the lock tongue 11 to a position corresponding to the fixing hole 234, and at this time, the lock tongue 11 corresponds to the movable space 2210, so that the lock tongue 11 can freely enter and exit the lock hole to release the first connection module 10 and the second connection module 20.

In this embodiment, the movable space 2210 is formed between the first elastic arm 2251 and the second elastic arm 2252. The first elastic arms 2251, the second elastic arms 2252, the clamping table 226 and the unlocking link 22 form a blank space surrounded by them, so as to form the movable space 2210.

As shown in fig. 4 and 11, when the first connection module 10 and the second connection module 20 are attracted by the first magnet 12 and the second magnet 24 to perform guide locking, a guide portion 2211 is provided at a position of the movable space 2210 opposite to the opening 227 for convenience of releasing the locking and reducing a force at the time of releasing the locking. The guiding portion 2211 can scoop out the combined position of the first magnet 12 and the second magnet 24, weaken the attraction force between the first magnet 12 and the second magnet 24, and guide the lock tongue 11 to move away from the second connection module 20, so as to facilitate releasing the lock and reduce the unlocking force.

As shown in fig. 4 and 11, the guide portion 2211 is provided with a guide surface which is spaced from the opening 227 and faces the opening 227. The guiding-out surface is inclined, a certain angle is formed between the guiding-out surface and the locking direction, and a certain angle is formed between the guiding-out surface and the radial direction of the elastic adjusting hole 221, so that one end of the guiding portion 2211 facing the opening 227 is sharp, and the guiding portion 2211 is conveniently extruded into the attraction position of the first magnet 12 and the second magnet 24, so as to shovel the first magnet 12 and the second magnet 24 and reduce the attraction force between the first magnet and the second magnet 24; meanwhile, the inclined surface of the guiding surface can guide the lock tongue 11 to move towards the direction of the first connecting module 10, so that the lock tongue 11 can be conveniently separated from the lock hole to release the lock.

The unlocking linkage 22 works according to the following principle:

as shown in fig. 13, in the first position state, the elastic adjustment hole 221 on the unlocking link 22 is opposite to the fixing hole 234; the size of the elastic adjusting hole 221 is adjustable; when the lock tongue 11 is inserted into the fixing hole 234 in the locking direction, the end of the lock tongue 11 presses the guiding surface 228 on the clamping table 226, so that the clamping table 226 expands outwards, and the lock tongue 11 can be extruded into the elastic adjusting hole 221; when the lock tongue 11 is pushed into the elastic adjusting hole 221, the retaining table 226 is restored to limit the lock tongue 11, so that the lock tongue 11 cannot be separated from the direction opposite to the locking direction, and the first connection module 10 and the second connection module 20 are locked together.

As shown in fig. 14, when the unlock operation member 21 is operated, the unlock linkage 22 is changed from the first position state to the second position state; in this process, the elastic adjusting hole 221 on the unlocking linkage 22 moves to a position offset from the fixing hole 234, so that the locking table 226 cannot lock the locking bolt 11; at the same time, the movable space 2210 moves toward the latch bolt 11 to a position corresponding to the fixing hole 234, and during this movement, the end of the guide portion 2211 is pressed into the portion where the first magnet 12 and the second magnet 24 are attracted to each other to weaken the attraction between the first magnet 12 and the second magnet 24; when the attractive force between the lock tongue 11 and the second magnet 24 is weakened, the lock tongue 11 moves away from the second connection module 20 under the guiding action of the guiding surface, so that the lock tongue 11 can be separated from the fixing hole 234 along the direction opposite to the locking direction, and the first connection module 10 and the second connection module 20 are released.

For a more detailed description of the technical solution of the invention, the following description is given by way of different examples:

example 1

As shown in fig. 1 to 4, the buckle of the present embodiment includes two first connection modules 10 and one second connection module 20; the first connection module 10 includes a latch 11 and a first magnet 12. The second connection module 20 includes a housing 23, an unlocking operation member 21, an unlocking linkage 22, and a second magnet 24. The unlock operation member 21 includes a first operation member 211 and a second operation member 212.

As shown in fig. 1 to 4, the first connection module 10 may be configured as required, and each of the first connection modules may have a protruding tongue 11. The locking tongue 11 may be integrally formed with the housing 23 of the first connection module 10 or may be fixedly connected together. The structure of the locking bolt 11 may refer to the known art, and generally includes a pillar portion 111 and a flange portion 112. The columnar portion 111 protrudes from the surface of the first connection module 10, and the protruding edge portion 112 is provided on an end portion of the columnar portion 111 and is integrally formed with the columnar portion 111. The outer dimension of the flange 112 is larger than the outer diameter of the columnar portion 111, so that a step for clamping is formed between the flange 112 and the columnar portion 111. In this embodiment, the columnar portion 111 has a cylindrical shape, and an outer diameter thereof is smaller than an inner diameter of the fixing hole 234 and a dimension of the elastic adjustment hole 221 in a default state. The outer diameter of the flange 112 is smaller than the inner diameter of the fixing hole 234 and larger than the size of the elastic adjustment hole 221 in a default state. In order to facilitate the spring bolt 11 entering the elastic adjusting hole 221, a guiding inclined plane 113 with a reduced shape is provided at the free end of the protruding edge 112 of the spring bolt 11, which has guiding function. The guide inclined surface 113 is disposed such that the convex edge 112 is entirely in a truncated cone shape.

As shown in fig. 1 to 4, a first magnet 12 is provided in the tongue 11. The first magnet 12 may be fixedly disposed in the latch 11 in a known manner. In this embodiment, a first groove 13 is disposed on a side of the first connection module 10 facing away from the lock tongue 11, and the first groove 13 faces the lock tongue 11. The first magnet 12 is fixedly embedded in the first groove 13 in a known manner.

As shown in fig. 1 to 4, the second connection module 20 is provided with a housing 23, and the housing 23 includes a first housing 231 and a second housing 232 which are connected to each other in a butt joint. An installation space is formed between the first housing 231 and the second housing 232. Key holes 233 for mounting the first and second operating members 211 and 212 are provided at both sides of the first and second housings 231 and 232, respectively. A plurality of fixing holes 234 for connecting the second connection module 20 are provided on the first housing 231. The number of the fixing holes 234 is identical to the number of the first connection modules 10, and 2 are provided in total.

As shown in fig. 1 to 4, a vertical first shaft 235 is provided on an inner side surface of the second housing 232, and the first shaft 235 is cylindrical and is rotatably connected to the unlocking link 22. The first shaft 235 and the second housing 232 are integrally formed or fixedly connected together.

As shown in fig. 1 to 4, the second housing 232 is provided with a second magnet 24, and the second magnet 24 corresponds to the position of the fixing hole 234. In this embodiment, a second groove is provided on an outer side surface of the second housing 232 facing away from the first housing 231, and a position of the second groove corresponds to a position of the fixing hole 234. The second magnet 24 is embedded in the second groove.

As shown in fig. 1 to 4, the unlocking linkage 22 includes an integrally formed connecting arm 222, a connecting portion 223, an acting portion 224, and an elastic arm group 225.

As shown in fig. 2 and 4, the number of the connecting arms 222 is equal to the number of the fixed holes 234, and in this embodiment, two connecting arms 222 are provided. One end of the two connecting arms 222 is integrally formed to form the connecting portion 223, and the other ends of the two connecting arms 222 are spaced apart to form free ends. A set of elastic arm sets 225 are provided on the free ends of the connecting arms 222, respectively. The action portion 224 is provided on a side of the connection portion 223 facing away from the connection arm 222.

As shown in fig. 2 and 4, the connecting portion 223 is configured to be rotatably connected to the housing 23, a shaft hole 2231 having a shape matching that of the first shaft 235 is formed in the connecting portion 223, and the unlocking linkage 22 is sleeved on the first shaft 235 through the shaft hole 2231 to form a rotational connection with the second housing 232, so that the unlocking linkage 22 can rotate around the first shaft 235.

As shown in fig. 2 and 4, the acting portion 224 is configured to be connected to the unlocking operation member 21, so as to drive the unlocking linkage 22 to rotate about the first rotation axis 235. A connection hole 2241 is provided in the working portion 224, and the connection hole 2241 is used to connect the first operation member 211.

As shown in fig. 2 and 4, the elastic arm groups 225 provided on the free ends of the connecting arms 222 are respectively located on the same side of the connecting arms 222. When the unlocking linkage 22 rotates around the first rotating shaft 235, the elastic arm group 225 synchronously rotates in the same direction.

As shown in fig. 2 and 4, the elastic arm group 225 includes a first elastic arm 2251 and a second elastic arm 2252 disposed at intervals, respectively. The first elastic arm 2251 and the second elastic arm 2252 have a certain length, which are all in cantilever shape, in other words, one ends of the first elastic arm 2251 and the second elastic arm 2252 are connected with the unlocking linkage 22 to form a fixed end, and the other ends thereof are extended to form a free end to form a moving end, so that the first elastic arm 2251 and the second elastic arm 2252 can perform small-amplitude elastic swinging with the fixed end as a fulcrum, and can be used for adjusting the size of the elastic adjusting hole 221.

As shown in fig. 2 and 4, the elastic arm set 225 and the connecting arm 222 form an angle, and in this embodiment, the elastic arm set 225 is approximately perpendicular to the connecting arm 222, so that the connection between the elastic arm set 225 and the connecting arm 222 is "7".

As shown in fig. 2 and 4, a first catch 2261 is provided on the first elastic arm 2251, a second catch 2262 is provided on the second elastic arm 2252, and the first catch 2261 and the second catch 2262 are opposed to each other to form a catch 226 having an opening 227.

In this embodiment, the first catch 2261 is integrally formed with the first elastic arm 2251, the second catch 2262 is integrally formed with the second elastic arm 2252, and the first elastic arm 2251 and the second elastic arm 2252 are integrally formed with the unlocking link 22.

As shown in fig. 2 and 4, the elastic adjustment hole 221 is formed inside the holding base 226. The shape of the elastic adjustment hole 221 is matched with the shape of the locking bolt 11, and the locking bolt 11 is generally cylindrical, so the elastic adjustment hole 221 is preferably a circular hole.

As shown in fig. 2 and 4, since the first elastic arm 2251 and the second elastic arm 2252 can elastically swing, and the clamping platform 226 is provided with an opening 227, the clamping platform 226 can be pressed to expand outwards, so that the elastic adjusting hole 221 is increased to facilitate the insertion of the locking bolt 11.

As shown in fig. 2 and 4, the number of the openings 227 of the clamping table 226 may be set according to needs, and at least one opening 227 is provided to facilitate the deformation of the elastic adjustment hole 221. In this embodiment, the holding stand 226 is provided with two openings 227 formed by spacing the ends of the first holding stand 2261 and the second holding stand 2262. In other embodiments, the first clamping table 2261 and/or the second clamping table 2262 may be provided with an opening 227, so that the clamping table 226 formed by combining the first clamping table 2261 and the second clamping table 2262 has the opening 227, thereby achieving similar technical effects.

In a default state, the inner diameter of the retaining base 226, that is, the diameter of the elastic adjusting hole 221 is smaller than the outer diameter of the flange 112 of the locking bolt 11 and larger than the outer diameter of the pillar 111 of the locking bolt 11. When the locking bolt 11 is to be inserted into the locking hole, the guiding inclined plane 113 of the locking bolt 11 presses the clamping table 226 to expand the clamping table 226, so that the locking bolt 11 can be extruded into the elastic adjusting hole 221 and clamped by the clamping table 226, and the locking bolt 11 cannot be separated from the locking hole along the direction opposite to the locking direction, so that the locking connection of the first connection module 10 and the second connection module 20 is realized.

As shown in fig. 2 and 4, in order to facilitate the spring bolt 11 to be extruded into the elastic adjustment hole 221, the first clamping table 2261 and the second clamping table 2262 are respectively provided with an introduction surface 228, and the introduction surface 228 is inclined, has a certain angle with the locking direction, and has a certain angle with the radial direction of the elastic adjustment hole 221, so that the inlet direction of the clamping table 226 is flared, and the spring bolt 11 is conveniently extruded into the clamping table 226 to be extruded into the elastic adjustment hole 221.

In order to facilitate the disengagement of the locking tongue 11 from the locking hole without tilting, a guide wall 229 is provided on a side of the retaining base 226 facing away from the entrance direction, as shown in fig. 2 and 4. The guide wall 229 is integrally formed with the catch 226. The guiding wall 229 is perpendicular to the retaining table 226 and is in a surrounding shape, and is parallel to the locking direction, so as to prevent the locking bolt 11 from tilting relative to the locking direction, and prevent the locking bolt 11 from being askew and being hooked in the retaining table 226 to prevent the locking from being released.

As shown in fig. 2 and 4, in order to facilitate the locking bolt 11 to release from the locking hole, a movable space 2210 is provided outside the retaining table 226 for the locking bolt 11 to freely go in and out. The movable space 2210 cannot limit the lock tongue 11, so that the lock tongue 11 can freely enter and exit the movable space 2210 and the fixing hole 234 to release the lock.

As shown in fig. 2 and 4, the movable space 2210 is communicated with the elastic regulating hole 221 through the opening 227. The direction of the path between the elastic adjusting hole 221 and the movable space 2210 is consistent with the moving direction of the elastic arm group 225. In the first position, i.e., the default position, the movable space 2210 is offset from the fixed hole 234. In the second position, i.e., when the lock is released, the movable space 2210 is opposite to the fixed hole 234. When the unlocking linkage 22 is changed from the first position to the second position, the elastic adjusting hole 221 moves to a position offset from the fixing hole 234, the movable space 2210 moves toward the lock tongue 11 to a position corresponding to the fixing hole 234, and at this time, the lock tongue 11 corresponds to the movable space 2210, so that the lock tongue 11 can freely enter and exit the lock hole to unlock the first connection module 10 and the second connection module 20.

As shown in fig. 2 and 4, in the present embodiment, the movable space 2210 is formed between the first elastic arm 2251 and the second elastic arm 2252. The first elastic arms 2251, the second elastic arms 2252, the clamping table 226 and the unlocking link 22 form a blank space surrounded by them, so as to form the movable space 2210.

As shown in fig. 2 and 4, when the first connection module 10 and the second connection module 20 are attracted by the first magnet 12 and the second magnet 24 to perform guide locking, a guide portion 2211 is provided at a position of the movable space 2210 opposite to the opening 227 for convenience of releasing the locking and reducing a force at the time of releasing the locking. The guiding portion 2211 can scoop out the combined position of the first magnet 12 and the second magnet 24, weaken the attraction force between the first magnet 12 and the second magnet 24, and guide the lock tongue 11 to move away from the second connection module 20, so as to facilitate releasing the lock and reduce the unlocking force.

As shown in fig. 2 and 4, the guide portion 2211 is provided with a guide surface which is spaced from the opening 227 and faces the opening 227. The guiding-out surface is inclined, a certain angle is formed between the guiding-out surface and the locking direction, and a certain angle is formed between the guiding-out surface and the radial direction of the elastic adjusting hole 221, so that one end of the guiding portion 2211 facing the opening 227 is sharp, and the guiding portion 2211 is conveniently extruded into the attraction position of the first magnet 12 and the second magnet 24, so as to shovel the first magnet 12 and the second magnet 24 and reduce the attraction force between the first magnet and the second magnet 24; meanwhile, the inclined surface of the guiding surface can guide the lock tongue 11 to move towards the direction of the first connecting module 10, so that the lock tongue 11 can be conveniently separated from the lock hole to release the lock.

As shown in fig. 2 and 4, the elastic arm group 225, the holding table 226, the connecting arm 222, the connecting portion 223, and the acting portion 224 form the unlocking link 22. The unlocking linkage 22 is rotatably connected to the first rotating shaft 235 of the second housing 232, and can rotate around the first rotating shaft 235 to change between a first position state and a second position state.

As shown in fig. 2 and 4, the unlock operation member 21 includes a first operation member 211 and a second operation member 212. The first operating member 211 and the second operating member 212 are respectively disposed in the button holes 233 on two sides of the housing 23, and one ends of the first operating member 211 and the second operating member 212 extend out of the housing 23, and one ends of the first operating member 211 and the second operating member 212 are disposed in the housing 23 and are respectively connected with the action portions 224 of the unlocking linkage 22 at the ends of the housing 23.

Specifically, as shown in fig. 2 and 4, the first operating member 211 includes a first pressing head 2111, a first link 2112 and a second rotating shaft 2113. The second operating member 212 includes a second pressing head 2121 and a second link 2122. The first pressing head 2111 and the second pressing head 2121 are located in the button holes 233 on both sides of the housing 23. The first link 2112 is perpendicular to the first compression head 2111 and is integrally formed with the first compression head 2111, extending to the apply portion 224 of the unlocking linkage 22. The second rotating shaft 2113 is connected to the proximal end portion of the first link 2112, and is sleeved in the connecting hole 2241 of the acting portion 224 to form a rotating connection with the unlocking link 22. The second link 2122 is perpendicular to the second pressing head 2121 and is integrally formed with the second pressing head 2121, and extends to the action portion 224 of the unlocking link 22. The end portions of the first link 2112 and the second link 2122 are respectively abutted against two sides of the acting portion 224, and when the first pressing head 2111 and the second pressing head 2121 are pressed in opposite directions, the first link 2112 and the second link 2122 generate a torsion moment on the acting portion 224, so that the unlocking linkage 22 rotates around the first rotating shaft 235, and the unlocking linkage 22 is changed from a first position state to a second position state to release the lock.

For easy resetting, an elastic member (not shown) is provided in the housing 23, and is used for resetting the unlocking linkage 22, so that the unlocking linkage 22 is reset from the second position state to the first position state when the external force is lost. The elastic member may be a torsion spring or the like, and the present embodiment is not limited thereto.

Thus, the buckle of the embodiment is formed: the first connection module 10 is provided with a lock tongue 11, and the lock tongue 11 can be inserted into a lock hole of the second connection module 20 along the locking direction to be locked with the second connection module 20. The second connection module 20 includes a first housing 231 and a second housing 232 connected in a butt joint, and an unlocking link 22 rotatable about a first rotation axis 235 is provided between the first housing 231 and the second housing 232; the first and second operating members 211 and 212 are symmetrically disposed on two sides of the first and second housings 231 and 232, respectively, and the first and second operating members 211 and 212 form the unlocking operation member 21, which acts on the acting portion 224 of the unlocking linkage 22 to drive the unlocking linkage 22 to rotate about the first rotation shaft 235. The connecting arm 222 of the unlocking linkage 22 is respectively provided with an elastic arm group 225 and a guide portion 2211, and the elastic arm group 225 is respectively provided with an elastic adjusting hole 221 with adjustable size and a movable space 2210 for the lock tongue 11 to freely go in and out. In the default state, i.e. the first position state, the elastic adjusting hole 221 on the unlocking linkage member 22 is opposite to the fixing hole 234, and the movable space 2210 is staggered from the fixing hole 234.

The locking principle of the first connection module 10 and the second connection module 20 of the buckle of the present embodiment is as follows:

when the latch 11 of the first connection module 10 approaches the fixing hole 234 of the second connection module 20, the first magnet 12 and the second magnet 24 attract each other, and under the attraction of the magnets, the latch 11 of the first connection module 10 enters the fixing hole 234 toward the locking direction and presses the guiding surface 228 of the holding platform 226 through the guiding inclined surface 113 of the latch 11, so that the holding platform 226 with elastic deformation capability expands outwards, and the latch 11 can be pushed into the elastic adjusting hole 221 (as shown in fig. 11). When the latch 11 is pushed into the elastic adjustment hole 221, the retaining table 226 is restored, and at this time, since the outer diameter of the protruding edge 112 of the latch 11 is larger than the size of the elastic adjustment hole 221, the latch 11 is limited in the elastic adjustment hole 221 and cannot be pulled out from the direction opposite to the locking direction, so that the first connection module 10 and the second connection module 20 are locked together (as shown in fig. 11). During this locking process, the attraction force of the first magnet 12 and the second magnet 24 can guide the latch 11 to squeeze into the elastic adjusting hole 221, which has a guiding function and facilitates the locking connection of the first connection module 10 and the second connection module 20.

The unlocking principle of the first connection module 10 and the second connection module 20 is as follows:

when the first and second operating members 211 and 212 are pressed toward each other, the first and second operating members 211 and 212 apply torque to the acting portion 224 of the unlocking link 22, thereby driving the unlocking link 22 to rotate about the first rotation shaft 235. When the unlocking linkage 22 rotates around the first rotating shaft 235, the elastic adjusting hole 221 on the unlocking linkage 22 moves to a position staggered from the fixing hole 234, so that the locking table 226 cannot lock the lock tongue 11 (as shown in fig. 14); at the same time, the movable space 2210 on the unlocking link 22 moves toward the lock tongue 11 to a position corresponding to the fixing hole 234, and at this time, the lock tongue 11 corresponds to the movable space 221, so that the lock tongue 11 can freely enter and exit the movable space 221 and the fixing hole 234. In addition, during the movement of the movable space 2210 toward the latch bolt 11, the end of the guide portion 2211 is pressed into the portion where the first magnet 12 and the second magnet 24 are combined to separate them, so that the attraction force between the first magnet 12 and the second magnet 24 is weakened; when the attractive force between the lock tongue 11 and the second magnet 24 is weakened, the lock tongue 11 moves away from the second connection module 20 under the guiding action of the guiding surface, so that the lock tongue 11 can be separated from the fixing hole 234 along the direction opposite to the locking direction, and the first connection module 10 and the second connection module 20 are released.

Example 2

As shown in fig. 5 to 7, the structure of the present embodiment 1 is basically the same as that of embodiment 1, except that the unlocking operation member 21 includes only the first operation member 211, and does not include the second operation member 212. The unlocking operation member 21 is disposed on one side of the housing 23, and when in use, the unlocking operation member 21 is pressed in one direction, which can drive the unlocking linkage member 22 to rotate around the first rotation shaft 235, so that the unlocking linkage member 22 can be changed from the first position state to the second position state, so as to unlock the first connection module 10 and the second connection module 20 which are connected together in a locking manner.

Example 3

As shown in fig. 8 to 11, the buckle of the present embodiment includes a plurality of first connection modules 10 and a second connection module 20; the first connection module 10 includes a latch 11 and a first magnet 12, respectively. The second connection module 20 includes a housing 23, an unlocking operation member 21, an unlocking linkage 22, and a second magnet 24. Wherein the unlocking operation member 21 is integrally formed with the unlocking linkage 22, which is physically present as one piece.

As shown in fig. 8 to 11, the first connecting modules 10 may be formed and arranged in number according to need, and each of the first connecting modules may be provided with a protruding tongue 11. The locking tongue 11 may be integrally formed with the housing 23 of the first connection module 10 or may be fixedly connected together. The structure of the locking bolt 11 may refer to the known art, and generally includes a pillar portion 111 and a flange portion 112. The columnar portion 111 protrudes from the surface of the first connection module 10, and the protruding edge portion 112 is provided on an end portion of the columnar portion 111 and is integrally formed with the columnar portion 111. The outer dimension of the flange 112 is larger than the outer diameter of the columnar portion 111, so that a step for clamping is formed between the flange 112 and the columnar portion 111. In this embodiment, the columnar portion 111 has a cylindrical shape, and an outer diameter thereof is smaller than an inner diameter of the fixing hole 234 and a dimension of the elastic adjustment hole 221 in a default state. The outer diameter of the flange 112 is smaller than the inner diameter of the fixing hole 234 and larger than the size of the elastic adjustment hole 221 in a default state. In order to facilitate the spring bolt 11 entering the elastic adjusting hole 221, a guiding inclined plane 113 with a reduced shape is provided at the free end of the protruding edge 112 of the spring bolt 11, which has guiding function. The guide inclined surface 113 is disposed such that the convex edge 112 is entirely in a truncated cone shape.

As shown in fig. 8 to 11, a first magnet 12 is provided in the tongue 11. The first magnet 12 may be fixedly disposed in the latch 11 in a known manner. In this embodiment, a first groove 13 is disposed on a side of the first connection module 10 facing away from the lock tongue 11, and the first groove 13 faces the lock tongue 11. The first magnet 12 is fixedly embedded in the first groove 13 in a known manner.

As shown in fig. 8 to 11, the second connection module 20 includes a first housing 231 and a second housing 232 connected to each other in a butt joint. An installation space is formed between the first housing 231 and the second housing 232. A key hole 233 is provided in the first housing 231 for pushing the unlocking operation member 21 to release the lock.

As shown in fig. 8 to 11, a plurality of fixing holes 234 for connecting the first connection module 10 are provided in the first housing 231. The number of the fixing holes 234 is identical to the number of the first connection modules 10. In this embodiment, the first housing 231 is provided with 4 fixing holes 234 spaced apart from each other.

As shown in fig. 8 to 11, the second housing 232 is provided with a second magnet 24, and the second magnet 24 corresponds to the position of the fixing hole 234. In this embodiment, 4 second grooves are provided on the outer side surface of the second housing 232 facing away from the first housing 231, and the positions of the second grooves respectively correspond to the positions of the fixing holes 234. The second magnet 24 is embedded in the second groove.

As shown in fig. 8 to 11, the unlocking link 22 is integrally formed with the unlocking operation member 21, and is physically formed as one component having both the function of the unlocking link 22 and the function of the unlocking operation member 21. In other embodiments, the unlocking linkage 22 and the unlocking operation member 21 may be fixedly connected together by two parts.

As shown in fig. 8 to 11, the unlock operation member 21 is provided between the first housing 231 and the second housing 232 in a block shape, and is slidable in the first housing 231 and the second housing 232. In order to ensure the sliding effect of the unlocking operation member 21, a strip-shaped limiting portion 236 is provided on the second housing 232, and the limiting portion 236 can restrict the unlocking operation member 21 to slide along the length direction of the limiting portion 236. The sliding direction of the unlocking manipulating member 21 is perpendicular to the locking direction.

As shown in fig. 8 to 11, in order to push the unlocking operation member 21, a push-pull portion 213 is provided on the unlocking operation member 21, and the push-pull portion 213 corresponds to the position of the key hole 233, and is exposed at the key hole 233, so that the user can operate conveniently. In this embodiment, the push-pull portion 213 is a groove, which is convenient for a user to push by putting a finger therein. The push-pull portion 213 is formed by the concave surface of the unlock operation member 21. In other embodiments, the push-pull portion 213 may be configured to protrude from the button hole 233 for facilitating pushing by a user.

As shown in fig. 8 to 11, the unlocking link 22 is integrally formed at one end of the unlocking operation piece 21 facing the fixing hole 234. A plurality of sets of resilient arms 225 are provided on the unlocking linkage 22. The number of the elastic arm groups 225 is identical to the number of the fixing holes 234, and in this embodiment, 4 elastic arm groups 225 are provided in total.

As shown in fig. 8 to 11, in order to facilitate the installation of the elastic arm group 225, a first support rod 2212 extending in the sliding direction of the unlocking operation member 21 is provided at an end of the unlocking linkage 22. The first support rod 2212 is integrally formed with the unlocking link 22. A transverse second support bar 2213 is provided on an end of the first support bar 2212. The second support rod 2213 is integrally formed with the first support rod 2212. The shape of the second support rod 2213 may be set according to needs, and in this embodiment, the second support rod 2213 has an arc shape.

As shown in fig. 8 to 11, the second support bar 2213 is provided with 4 elastic arm groups 225, and the elastic arm groups 225 are parallel to the sliding direction of the unlock operation member 21. In this embodiment, the elastic arm groups 225 are disposed on the side of the second support rod 2213 facing the first support rod 2212, and the elastic arm groups 225 are uniformly spaced.

As shown in fig. 8 to 11, the elastic arm group 225 includes a first elastic arm 2251 and a second elastic arm 2252 that are disposed at intervals, respectively. The first elastic arm 2251 and the second elastic arm 2252 have a certain length, which are all in cantilever shape, in other words, one ends of the first elastic arm 2251 and the second elastic arm 2252 are connected with the second support rod 2213 to form a fixed end, and the other ends thereof extend to form a free end to form a movable end, so that the first elastic arm 2251 and the second elastic arm 2252 can perform small-amplitude elastic swinging with the fixed end as a fulcrum, and can be used for adjusting the size of the elastic adjusting hole 221. In this embodiment, the first elastic arm 2251 and the second elastic arm 2252 are integrally formed in approximately parallel with the sliding direction of the unlock operation member 21.

As shown in fig. 8 to 11, a first catch 2261 is provided on the first elastic arm 2251, a second catch 2262 is provided on the second elastic arm 2252, and the first catch 2261 and the second catch 2262 are opposed to each other to form a catch 226 having an opening 227.

As shown in fig. 8 to 11, the first catch 2261 is integrally formed with the first elastic arm 2251, the second catch 2262 is integrally formed with the second elastic arm 2252, and the first elastic arm 2251 and the second elastic arm 2252 are integrally formed with the unlocking link 22.

As shown in fig. 8 to 11, the elastic adjustment hole 221 is formed in the holding base 226. The shape of the elastic adjustment hole 221 is matched with the shape of the locking bolt 11, and the locking bolt 11 is generally cylindrical, so the elastic adjustment hole 221 is preferably a circular hole. Because the first elastic arm 2251 and the second elastic arm 2252 can elastically swing, and the clamping platform 225 is provided with the opening 227, the clamping platform 226 can be extruded to expand outwards, so that the elastic adjusting hole 221 is enlarged to facilitate the extrusion of the bolt.

As shown in fig. 8 to 11, the number of the openings 227 of the clamping table 226 may be set according to needs, and at least one opening 227 is provided to facilitate the extrusion deformation of the elastic adjustment hole 221. In this embodiment, the catch 226 is provided with two openings 227 formed by spacing the ends of the first catch 2261 and the second catch 2262, and the line connecting the openings 227 is parallel to the sliding direction of the unlocking operation member 21. In other embodiments, the first clamping table 2261 and/or the second clamping table 2262 may be provided with an opening 227, so that the clamping table 226 formed by combining the first clamping table 2261 and the second clamping table 2262 has the opening 227, thereby achieving similar technical effects.

In a default state, the inner diameter of the retaining base 226, that is, the diameter of the elastic adjusting hole 221 is smaller than the outer diameter of the flange 112 of the locking bolt 11 and larger than the outer diameter of the columnar portion 111 of the locking bolt 11. When the locking bolt 11 is to be inserted into the locking hole, the guiding inclined plane 113 of the locking bolt 11 presses the clamping table 226 to expand the clamping table 226, so that the locking bolt 11 can be extruded into the elastic adjusting hole 221 and clamped by the clamping table 226, and the locking bolt 11 cannot be pulled out of the locking hole along the direction opposite to the locking direction, so that the locking connection of the first connection module 10 and the second connection module 20 is realized.

As shown in fig. 8 to 11, in order to facilitate the spring bolt 11 to be pushed into the elastic adjustment hole 221, the first clamping table 2261 and the second clamping table 2262 are respectively provided with an introduction surface 228, and the introduction surfaces 228 are inclined, have a certain angle with the locking direction and have a certain angle with the radial direction of the elastic adjustment hole 221, so that the inlet direction of the clamping table 226 is flared, and the spring bolt 11 is conveniently pushed into the elastic adjustment hole 221 by extruding the clamping table 226.

As shown in fig. 8 to 11, in order to facilitate the disengagement of the locking tongue 11 from the locking hole without tilting, a guide wall 229 is provided on a side of the retaining base 226 facing away from the entrance direction. The guide wall 229 is integrally formed with the catch 226. The guiding wall 229 is perpendicular to the retaining table 226 and is in a surrounding shape, and is parallel to the locking direction, so as to prevent the locking bolt 11 from tilting relative to the locking direction, and prevent the locking bolt 11 from being askew and being hooked in the retaining table 226 to prevent the locking from being released.

As shown in fig. 8 to 11, in order to facilitate the release of the locking bolt 11 from the locking hole, a movable space 2210 is provided outside the holding table 226 for the locking bolt 11 to freely go in and out. The movable space 2210 cannot limit the lock tongue 11, so that the lock tongue 11 can freely enter and exit the movable space 2210 and the fixing hole 234 to release the lock. The movable space 2210 is communicated with the elastic regulating hole 221 through the opening 227, and a path direction between the movable space 2210 and the elastic regulating hole 221 is parallel to a sliding direction of the unlocking operation member 21.

In the default state, i.e., the first position state (as shown in fig. 13), the movable space 2210 is offset from the fixed hole 234. In the unlocking state, i.e., in the second position (as shown in fig. 14), the movable space 2210 is opposite to the fixed hole 234. When the unlocking linkage 22 is changed from the first position state to the second position state, the elastic adjusting hole 221 moves to a position staggered from the fixing hole 234, the movable space 2210 moves towards the lock tongue 11 to a position corresponding to the fixing hole 234, and at this time, the lock tongue 11 corresponds to the movable space 2210, so that the lock tongue 11 can freely go in and go out to unlock the first connection module 10 and the second connection module 20.

As shown in fig. 8 to 11, in the present embodiment, the movable space 2210 is formed between the first elastic arm 2251 and the second elastic arm 2252. The first elastic arms 2251, the second elastic arms 2252, the clamping table 226 and the unlocking link 22 form a blank space surrounded by them, so as to form the movable space 2210.

As shown in fig. 8 to 11, when the first connection module 10 and the second connection module 20 are attracted by the first magnet 12 and the second magnet 24 to perform guide locking, a guide portion 2211 is provided at a position of the movable space 2210 opposite to the opening 227 for convenience of releasing the locking and reducing a force at the time of releasing the locking. The guiding portion 2211 can scoop out the combined position of the first magnet 12 and the second magnet 24, weaken the attraction force between the first magnet 12 and the second magnet 24, and guide the lock tongue 11 to move away from the second connection module 20, so as to facilitate releasing the lock and reduce the unlocking force.

As shown in fig. 8 to 11, the guide portion 2211 is provided with a guide surface which is spaced from the opening 227 and faces the opening 227. The guiding-out surface is inclined, a certain angle is formed between the guiding-out surface and the locking direction, and a certain angle is formed between the guiding-out surface and the radial direction of the elastic adjusting hole 221, so that one end of the guiding portion 2211 facing the opening 227 is sharp, and the guiding portion 2211 is conveniently extruded into the attraction position of the first magnet 12 and the second magnet 24, so as to shovel the first magnet 12 and the second magnet 24 and reduce the attraction force between the first magnet and the second magnet 24; meanwhile, the inclined surface of the guiding surface can guide the lock tongue 11 to move towards the direction of the first connecting module 10, so that the lock tongue 11 can be conveniently separated from the lock hole to release the lock.

For easy resetting, an elastic member (not shown) is provided in the housing 23, and is used for resetting the unlocking linkage 22 and/or the unlocking operation member 21, so that the unlocking linkage 22 is reset from the second position state to the first position state when the external force is lost. The elastic member may be configured by a known spring, etc., and may abut between the housing 23 and the unlocking operation member 21, and may elastically deform in the sliding direction of the unlocking operation member 21 to assist the unlocking operation member 21 to return, so as to return the unlocking linkage member 22.

Thus, the buckle of the embodiment is formed: the first connection module 10 is provided with a lock tongue 11, and the lock tongue 11 can be inserted into a lock hole of the second connection module 20 along the locking direction to be locked with the second connection module 20. The second connection module 20 includes a first housing 231 and a second housing 232 connected in a butt joint, and a slidable unlock operation member 21 and an unlock linkage 22 are provided between the first housing 231 and the second housing 232. The unlocking operation member 21 is integrally formed with the unlocking linkage member 22, and a push-pull portion 213 is provided on the unlocking operation member 21, which is convenient for a user to push the unlocking operation member 21. An elastic arm group 225 is provided at an end of the unlocking linkage 22 opposite to the unlocking operation member 21, and an elastic adjusting hole 221 with an adjustable size, a movable space 2210 for the locking bolt 11 to freely go in and out, and a guide portion 2211 for separating the joint between the first magnet 12 and the second magnet 24 are provided on the elastic arm group 225. In the default state, i.e. the first position state, the elastic adjusting hole 221 on the unlocking linkage member 22 is opposite to the fixing hole 234, and the movable space 2210 is staggered from the fixing hole 234.

The locking principle of the first connection module 10 and the second connection module 20 in this embodiment is as follows:

when the latch 11 of the first connection module 10 approaches the fixing hole 234 of the second connection module 20, the first magnet 12 and the second magnet 24 attract each other, and under the attraction of the magnets, the latch 11 of the first connection module 10 enters the fixing hole 234 toward the locking direction and presses the guiding surface 228 of the holding table 226 through the guiding inclined surface 113 of the latch 11, so that the holding table 226 with elastic deformation capability expands outwards, and the latch 11 can be extruded into the elastic adjusting hole 221. When the latch 11 is pushed into the elastic adjustment hole 221, the retaining table 226 is restored, and at this time, since the outer diameter of the protruding edge 112 of the latch 11 is larger than the size of the elastic adjustment hole 221, the latch 11 is limited in the elastic adjustment hole 221 and cannot be pulled out from the direction opposite to the locking direction, so that the first connection module 10 and the second connection module 20 are locked together (as shown in fig. 13). During this locking process, the attraction force of the first magnet 12 and the second magnet 24 can guide the latch 11 to squeeze into the elastic adjusting hole 221, which has a guiding function and can facilitate the connection of the first connection module 10 and the second connection module 20.

The unlocking principle of the first connection module 10 and the second connection module 20 of the present embodiment is as follows:

when the unlocking operation member 21 is pushed, the unlocking linkage member 22 moves synchronously, and the elastic adjusting hole 221 on the unlocking linkage member 22 moves to a position staggered from the fixing hole 234, so that the locking table 226 cannot lock the lock tongue 11; meanwhile, the movable space 2210 on the unlocking linkage 22 moves towards the direction of the lock tongue 11 to a position corresponding to the fixed hole 234, that is, the movable space 2210 corresponds to the position of the lock tongue 11, so that the lock tongue 11 can freely go in and out without being limited (as shown in fig. 14); in addition, during the movement of the movable space 2210 toward the latch bolt 11, the end of the guide portion 2211 is pressed into the portion where the first magnet 12 and the second magnet 24 are attracted to each other to separate them, so that the attraction force between the first magnet 12 and the second magnet 24 is weakened; when the attractive force between the lock tongue 11 and the second magnet 24 is weakened, the lock tongue 11 moves away from the second connection module 20 under the guiding action of the guiding surface, so that the lock tongue 11 can be separated from the fixing hole 234 along the direction opposite to the locking direction, and the first connection module 10 and the second connection module 20 are released.

Example 4

As shown in fig. 12, the basic structure of this embodiment is the same as that of embodiment 3, except that in this embodiment, a third magnet 25 is further provided on the second connection module 20. The number of the third magnets 25 is equal to the number of the fixing holes 234, and in this embodiment, four magnets are provided.

The third magnet 25 is provided on the unlocking link 22 at a distance from the first magnet 12. The distance between the third magnet 25 and the first magnet 12 is consistent with the path that the elastic adjustment hole 221 needs to move when changing from the first position state to the second position state, so that: in the first position state, the elastic adjusting hole 221 corresponds to the fixing hole 234, and the third magnet 25 is staggered from the fixing hole 234; in the second position state, the elastic adjustment hole 221 is offset from the fixing hole 234, and the third magnet 25 corresponds to the fixing hole 234.

In this embodiment, a third groove is disposed on a side of the unlocking link 22 facing away from the fixing hole 234, and the third groove corresponds to the position of the guiding portion 2211. The third magnet 25 is embedded in the third groove.

The third magnet 25 is repulsive to the first magnet 12. When the unlocking link 22 is changed from the first position state to the second position state, the third magnet 25 moves to a position corresponding to the first magnet 12 to generate a repulsive force with the first magnet 12, which can repel the latch tongue 11 from the fixing hole 234 to separate the first connection module 10 and the second connection module 20.

The third magnet 25 is provided to separate the first connection module 10 and the second connection module 20 more conveniently when releasing the lock.

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 (13)

1. A fastener, comprising:

a first connection module (10) provided with a protruding tongue (11);

a second connection module (20) provided with a fixing hole (234) for the lock tongue (11) to freely go in and out;

an unlocking operation member (21) provided on the second connection module (20) and movable in a direction different from the locking direction to unlock the first connection module (10) and the second connection module (20);

wherein the first connecting module (10) and the second connecting module (20) can be locked together and released by the unlocking operation piece (21),

characterized in that it further comprises:

an unlocking linkage member (22) which is provided on the second connection module (20) and is linked by the unlocking operation member (21); at least one group of elastic arm groups (225) is arranged on the unlocking linkage piece (22), an elastic adjusting hole (221) is arranged on the elastic arm groups (225), and the elastic adjusting hole (221) can deform along a direction different from the locking direction; under the linkage of the unlocking operation piece (21), the unlocking linkage piece (22) at least has a first position state and a second position state,

In a first position state, the elastic adjusting hole (221) corresponds to the position of the fixing hole (234), and the lock tongue (11) can be extruded into the elastic adjusting hole (221) to lock the first connecting module (10) and the second connecting module (20);

when the state of the first position is changed to the state of the second position, the elastic arm group (225) moves towards the same direction to enable the elastic adjusting hole (221) to be staggered from the position of the fixing hole (234), and the lock tongue (11) can freely enter and exit the fixing hole (234) to release the first connecting module (10) and the second connecting module (20).

2. The fastener according to claim 1, characterized in that a first magnet (12) is provided in the first connection module (10), a second magnet (24) is provided in the second connection module (20), the position of the first magnet (12) corresponds to the position of the lock tongue (11), and the position of the second magnet (24) corresponds to the position of the fixing hole (234); when the lock tongue (11) is close to the fixing hole (234), the first magnet (12) and the second magnet (24) attract each other to guide the lock tongue (11) to enter the fixing hole (234) and the elastic adjusting hole (221).

3. The buckle according to claim 1, characterized in that the unlocking linkage (22) is integrally formed with the unlocking operation member (21) or is linked together.

4. The buckle according to claim 1, wherein at least one elastic arm set (225) is provided on the unlocking linkage member (22), the elastic arm set (225) includes a first elastic arm (2251) and a second elastic arm (2252) that are disposed at intervals, a first clamping table (2261) is provided on the first elastic arm (2251), a second clamping table (2262) is provided on the second elastic arm (2252), the first clamping table (2261) and the second clamping table (2262) are opposite to form a clamping table (226) having an opening (227), and the elastic adjustment hole (221) is formed inside the clamping table (226).

5. The buckle according to claim 4, wherein a movable space (2210) through which the lock tongue (11) can freely enter and exit is provided outside the holding table (226), the movable space (2210) is communicated with the elastic adjustment hole (221) through the opening (227), when the unlocking linkage (22) is changed from the first position state to the second position state, the elastic adjustment hole (221) moves to a position offset from the fixing hole (234), and the movable space (2210) moves toward the lock tongue (11) to a position corresponding to the fixing hole (234).

6. The buckle according to claim 5, wherein the movable space (2210) is formed between the first elastic arm (2251) and the second elastic arm (2252), a guide portion (2211) is provided at a position of the movable space (2210) opposite to the opening (227), the guide portion (2211) is provided with a guide surface, which is spaced from the opening (227) and faces the opening (227), and the guide surface guides the lock tongue (11) in a direction away from the second connection module (20).

7. The buckle according to claim 4, wherein the first catch (2261) and the second catch (2262) are each provided with an introduction surface (228) for guiding the tongue (11) into the elasticity adjustment hole (221).

8. The fastener according to claim 2, characterized in that a third magnet (25) is provided on the unlocking link (22), the third magnet (25) being displaced from the fixing hole (234) in the first position; in a second position state, the third magnet (25) corresponds to the position of the fixing hole (234); when the first position state is changed to the second position state, the third magnet (25) and the first magnet (12) repel each other, and the lock tongue (11) is discharged from the fixing hole (234) so as to separate the first connection module (10) and the second connection module (20).

9. The buckle according to claim 1, characterized in that the unlocking operation member (21) rotates or slides the unlocking linkage member (22) to change from the first position state to the second position state.

10. The buckle according to claim 4, wherein the unlocking linkage member (22) comprises at least two connecting arms (222), one ends of the connecting arms (222) are integrally formed to form a connecting portion (223), the other ends of the connecting arms (222) are spaced to form free ends, the free ends of the connecting arms (222) are respectively provided with the elastic arm groups (225), the connecting portion (223) and the second connecting module (20) are rotatably connected through a first rotating shaft (235), an acting portion (224) is arranged on one side, away from the connecting arms (222), of the connecting portion (223), and the unlocking operation member (21) can act on the acting portion (224) to rotate the unlocking linkage member (22) around the first rotating shaft (235) so as to enable the unlocking linkage member (22) to change from a first position state to a second position state.

11. The buckle according to claim 10, wherein the unlocking operation member (21) comprises a first operation member (211) and a second operation member (212), the first operation member (211) and the second operation member (212) are disposed on two sides of the second connection module (20), the first operation member (211) and the second operation member (212) are opposite, the first operation member (211) is movably connected with an end portion of the action portion (224), the second operation member (212) is abutted against a side wall of the action portion (224), and when the first operation member (211) and the second operation member (212) are pressed towards each other, the unlocking linkage member (22) rotates around the first rotation shaft (235) to change from a first position state to a second position state.

12. The buckle according to claim 10, wherein the unlocking operation member (21) is provided on one side of the second connection module (20), the unlocking operation member (21) is movably connected with an end portion of the action portion (224), and the unlocking linkage member (22) rotates about the first rotation shaft (235) when the unlocking operation member (21) is pressed.

13. The buckle according to claim 4, wherein the unlocking operation member (21) is integrally formed with the unlocking linkage member (22), a push-pull portion (213) is provided on the unlocking operation member (21), the unlocking operation member (21) is slidable in a direction perpendicular to the locking direction, and when the unlocking operation member (21) is pushed to slide, the unlocking linkage member (22) is changed from the first position state to the second position state.