A buckle with an anti-mis-touch unlocking function

Abstract

The buckle with the mistaken touch unlocking function includes a first fastener and a second fastener, the second fastener is provided with a locking piece, the locking piece is provided with a locking part, and the locking part can be switched between a first position and a second position; when the locking part is in the first position, the locking part is in an unlocking state, and the locking piece can be moved in an unlocking direction to unlock the first fastener and the second fastener; when the locking part is in the second position, the locking part is in a locking state, and the locking piece is locked and cannot be moved in the unlocking direction. The locking part is added to the locking piece, and the traditional single one-way unlocking action is upgraded to the double linkage mechanism of'switching the state first and then unlocking by displacement'. Before the locking part is actively operated to the unlocking state, the locking piece is in the locking state and cannot be moved to unlock. This design can effectively resist unexpected external force touch and prevent the buckle from being unlocked accidentally.

Description

Technical Field

[0001] This invention relates to the field of fasteners, and more particularly to a fastener with an anti-accidental unlocking function. Background Technology

[0002] Buckles (such as snap fasteners and safety buckles) are a common type of connection and fastening component, widely used in outdoor backpacks, seat belts, pet supplies, and child seats. Traditional buckles typically consist of a male and a female buckle. The male buckle's locking tongue inserts into the female buckle's locking hole, and the female buckle's internal locking mechanism engages with the locking tongue's locking groove to achieve locking. When unlocking is needed, the user usually only needs to operate (such as pressing or pulling) the operating part on the locking part in the unlocking direction to disengage the locking part from the locking groove, thus achieving quick unlocking. However, this traditional single-operation unlocking structure has significant safety hazards in actual use. Because the operating part is usually exposed and the unlocking path is singular, the buckle is easily subjected to accidental impacts or pressure from foreign objects in complex real-world application scenarios (such as squeezing during outdoor sports, collisions from running pets, or unintentional grabbing by children). This accidental unidirectional external force can easily trigger the operating part, causing the buckle to automatically unlock and disengage unexpectedly. In many situations requiring high security, the accidental disconnection of fasteners could lead to equipment falling, pets breaking free, or even personal injury accidents.

[0003] Therefore, how to design a buckle that is simple in structure, reliable in transmission, and can effectively prevent accidental unlocking due to accidental contact is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] The present invention aims to solve the above problems and provide a buckle with simple structure, reliable transmission, and effective prevention of accidental unlocking due to accidental contact.

[0005] To address the above problems, the present invention provides a fastener with an anti-accidental unlocking function, characterized in that it comprises:

[0006] A first fastener, the first fastener having a protruding locking tongue, the locking tongue having a locking groove; and

[0007] The second fastener is provided with a locking hole and a locking element, wherein the locking element includes a locking part;

[0008] The locking tongue can be inserted into the lock hole, and the locking part can be engaged with the locking groove in the first direction to achieve the locking of the first fastener and the second fastener;

[0009] The locking component is provided with a locking element, which can be switched between a first position and a second position;

[0010] When the locking member is in the first position, the locking member is in the unlocked state. The locking member can move along the unlocking direction so that the locking part disengages from the locking groove to achieve unlocking.

[0011] When the locking member is in the second position, the locking member is in a locked state and cannot move in the unlocking direction.

[0012] Furthermore, the locking member switches between the first position and the second position by moving along the second direction, and the second direction is perpendicular to the unlocking direction.

[0013] Furthermore, the second fastener is provided with a housing, the housing having a clearance portion, and the locking member having a locking portion;

[0014] When the locking member is in the second position, the locking part interferes with the housing to restrict the movement of the locking member along the unlocking direction;

[0015] When the locking member is in the first position, the locking part corresponds to the clearance part, and the locking member can pass into the clearance part in the unlocking direction so that the locking member can move in the unlocking direction.

[0016] Furthermore, the locking member and the latching member are mutually limiting and cooperating, so that the locking member can be selectively and stably held in the first position or the second position.

[0017] Furthermore, the locking member is provided with a protruding first limiting part, and the inner wall of the locking member is provided with a second limiting part;

[0018] When the locking member is in the second position, the second limiting part is located on the side of the first limiting part near the avoidance part, and the second limiting part abuts against the first limiting part to restrict the locking member from moving to the first position;

[0019] When the locking member is in the first position, the second limiting part is located on the side of the first limiting part away from the avoidance part, and the second limiting part abuts against the first limiting part to restrict the locking member from moving to the second position.

[0020] Furthermore, the locking component is provided with a sliding groove extending along the second direction.

[0021] The locking component also includes a pushing part (2212) and a guiding part;

[0022] The guide portion is partially movably mounted in the slide groove, the push portion (2212) is at least partially exposed on the surface of the locking member, and the locking portion protrudes from the side of the guide portion opposite to the push portion (2212).

[0023] Furthermore, the locking member is provided with a first limiting block and a second limiting block for limiting the movement stroke of the locking member; the first limiting block, the second limiting block and the inner wall of the locking member are spaced apart to define the sliding groove;

[0024] The locking part is located between the first limiting block and the second limiting block;

[0025] When the locking member moves from the second position to the first position, the locking part abuts against the first limiting block to restrict the locking member from continuing to move. At this time, the locking part is precisely aligned with the clearance part.

[0026] When the locking member moves from the first position to the second position, the locking part abuts against the second limiting block to restrict the locking member from continuing to move. At this time, the locking part interferes with the second fastener housing.

[0027] Furthermore, the first limiting portion is located at the end of the guide portion.

[0028] Furthermore, the locking component includes an operating part, a connecting part, and a force transmission part;

[0029] The connecting part is connected between the operating part and the force transmission part;

[0030] The operating part has a through first hole and a second hole, and the locking part is movably disposed in the first hole; the locking part passes through the second hole and faces the second fastener; the size of the second hole in the second direction is larger than the size of the clearance part in the second direction, and the projection of the second hole in the second direction at least partially overlaps with the projection of the clearance part in the second direction.

[0031] Furthermore, the housing is provided with a connecting hole for the connecting part to pass through, and the clearance part is constructed as a recessed structure formed on the edge of the connecting hole, and the clearance part and the connecting hole are spatially interconnected.

[0032] Furthermore, the connecting portion is provided with a recessed limiting channel, the locking portion is partially disposed in the limiting channel, the limiting channel and the second hole are connected and aligned in the second direction, the size of the limiting channel in the second direction is equal to the size of the second hole in the second direction, the limiting channel is connected to the avoidance portion, and a portion of the limiting channel corresponds to the avoidance portion in the unlocking path.

[0033] Furthermore, the force transmission part is formed as a frame-shaped enclosure structure, the locking part is disposed on the force transmission part and located on the end structure of the force transmission part away from the avoidance part, and the locking part and the avoidance part are configured to be spaced apart.

[0034] Furthermore, the locking part is constructed as an independent structure and located to the side of the force transmission part; the mating surface between the force transmission part and the locking part is provided with an oblique guide structure to convert the displacement applied by the operating part along the unlocking direction into a horizontal displacement perpendicular to the unlocking direction, so as to drive the locking part to move along a path parallel to the second direction in a coordinated manner.

[0035] This invention upgrades the traditional single-direction unlocking action to a dual-linkage mechanism of "switching states first, then moving to unlock" by adding a locking element to the locking mechanism. The locking mechanism remains locked and cannot be moved to the unlocked state until the locking element is actively operated. This design overcomes the shortcomings of traditional buckles with a single unlocking path, effectively resisting unexpected external force contact such as outdoor squeezing or accidental collisions, fundamentally eliminating the risk of accidental unlocking. Furthermore, the locking element is directly mounted on the operating part of the locking mechanism, achieving a high degree of integration and modularity between the locking and unlocking execution units. During actual operation, the user's finger triggers the switching of the locking element simultaneously with touching the operating part, allowing the "unlocking" and "press / pull-down unlocking" actions to be completed consecutively. While ensuring extremely high safety protection density, it does not significantly increase the user's operational complexity, achieving a perfect balance between high safety and an excellent user experience. The transmission logic is simple and direct, which helps reduce the failure rate and extend service life. By directly "locking / releasing" the movement path of the operating part through the locking component, the purely mechanical limiting mechanism results in an extremely short overall transmission chain, a stable structure, and extremely high mechanical stability and a longer service life. Attached Figure Description

[0036] Figure 1 : Schematic diagram of the fastener structure.

[0037] Figure 2 : A schematic diagram of the cross-section of the fastener when the locking element is in the second position.

[0038] Figure 3 : A schematic diagram of the cross-section of the fastener when the locking element is in the first position.

[0039] Figure 4 : A schematic diagram of the cross-section of the buckle when the locking element is in the first position and the buckle is unlocked.

[0040] Figure 5 : Schematic diagram of the second fastener structure.

[0041] Figure 6 Schematic diagram of the shell structure.

[0042] Figure 7 : Schematic diagram of the locking mechanism.

[0043] Figure 8 Schematic diagram of the locking mechanism (excluding the locking element) Figure 1 .

[0044] Figure 9 Schematic diagram of the locking mechanism (excluding the locking element) Figure 2 .

[0045] Figure 10 : Schematic diagram of the locking component.

[0046] Illustration:

[0047] First fastener 10, locking tongue 11, locking groove 111, second fastener 20, housing 21, lock hole 211, clearance part 212, connecting hole 213, locking member 22, locking member 221, locking part 2211, pushing part 2212, guiding part 2213, first limiting part 22131, operating part 222, first limiting block 2221, second limiting block 2222, second limiting part 2223, first hole part 2224, second hole part 2225, connecting part 223, limiting channel 2231, force transmission part 224, locking part 2241. Detailed Implementation

[0048] The following embodiments are further explanations and supplements to the present invention and do not constitute any limitation on the present invention.

[0049] like Figures 1-10 As shown, a fastener with an anti-accidental unlocking function includes a first fastener 10 and a second fastener 20. The first fastener 10 has a protruding latch 11 with a locking groove 111. Correspondingly, the second fastener 20 has a locking hole 211 and a locking member 22, the locking member 22 including a locking portion 2241 for engaging with the locking groove 111. When the first fastener 10 and the second fastener 20 need to be locked together, the latch 11 of the first fastener 10 is aligned with the locking hole 211 of the second fastener 20 and inserted into the locking hole 211. The locking part 2241 engages with the locking groove 111 along the first direction, restricting the locking tongue 11 from disengaging from the lock hole 211, thereby achieving the locking of the first fastener 10 and the second fastener 20; by operating the locking member 22, the locking member 22 moves and drives the locking part 2241 to disengage from the locking groove 111, thereby unlocking the first fastener 10 and the second fastener 20.

[0050] To prevent accidental movement of the locking mechanism 22 due to accidental activation in complex external environments, a movable locking element 221 is specially provided on the locking mechanism 22. The locking element 221 can switch between a first position and a second position according to the user's operation.

[0051] When the locking member 221 is in the first position, the locking member 22 is in the unlocked state. By operating the locking member 22 to move it in the unlocking direction, the locking part 2241 can be disengaged from the locking groove 111, thereby unlocking the first fastener 10 and the second fastener 20.

[0052] When the locking member 221 is in the second position, the locking member 22 is in a locked state and cannot move in the unlocking direction. In this state, since the locking member 221 provides reliable physical restraint in the second position, even if the locking member 22 is subjected to external force, it cannot move in the unlocking direction; the locking part 2241 remains stably locked in the locking groove 111, thereby effectively preventing accidental unlocking of the first fastener 10 and the second fastener 20 due to accidental contact with the locking member 22.

[0053] Furthermore, the unlocking direction is specifically the direction in which the locking member 22 is moved as a whole; the first direction is specifically the direction in which the locking part 2241 enters and exits the locking groove 111; the unlocking direction and the first direction can be parallel or intersecting. In this embodiment, the first direction and the unlocking direction are parallel.

[0054] Because the first fastener 10 and the second fastener 20 rely on the cooperation of the locking part 2241 and the locking groove 111 to achieve a locking connection, that is, during the locking process of the first fastener 10 and the second fastener 20, the locking part 2241 needs to move to the locking groove 111. When the first fastener 10 and the second fastener 20 are locked from the separated state, the locking member 221 is in the first position to ensure that the locking member 22 can move.

[0055] When it is necessary to lock the first fastener 10 and the second fastener 20 from their separated state, it must be ensured that the locking member 221 is in the first position, allowing the locking member 22 to move. At this time, the latch 11 is inserted into the lock hole 211. During the insertion of the latch 11, the locking member 22 moves smoothly, and its locking portion 2241 engages with the locking groove 111 of the latch 11 along the first direction. Through the mutual engagement of the locking portion 2241 and the locking groove 111, the latch 11 is prevented from disengaging from the lock hole 211, ultimately achieving a reliable lock between the first fastener 10 and the second fastener 20. Then, the locking member 221 is moved to the second position to ensure that the locking member 22 will not move due to accidental contact.

[0056] When it is necessary to actively separate the locked first fastener 10 and second fastener 20, the movable locking member 221 is first operated to drive it to shift from its original second position to the first position. At this time, the locking member 22 is allowed to move in the unlocking direction. Then, an operating force is applied to operate the locking member 22. At this time, the locking member 22 can move smoothly in the unlocking direction, and during the movement, it drives the locking part 2241 to completely disengage from the locking groove 111. Thus, the bolt 11 is no longer blocked by the locking part 2241, and the bolt 11 can be smoothly pulled out from the key hole 211, finally realizing the unlocking and separation of the first fastener 10 and the second fastener 20.

[0057] Furthermore, to achieve rapid locking of the first fastener 10 and the second fastener 20, the first fastener 10 is provided with a first magnet, and the second fastener 20 is provided with a second magnet. Specifically, the latch 11 has a first magnet groove inside, and the first magnet is located in the first magnet groove; the bottom back of the lock hole 211 (inside the second fastener 20) has a second magnet groove, and the second magnet is located in the second magnet groove. The first magnet and the second magnet are used to generate an attraction when the first fastener 10 and the second fastener 20 approach each other, thereby assisting in the locking between the first fastener 10 and the second fastener 20. Specifically, when the first fastener 10 and the second fastener 20 approach each other, the first magnet and the second magnet attract each other, causing the first fastener 10 and the second fastener 20 to approach each other under the magnetic attraction, thereby guiding the latch 11 to move toward the lock hole 211 and inserting the latch 11 into the lock hole 211. When the latch 11 is fully or partially inserted into the lock hole 211, the locking member 22 is at least partially engaged in the locking groove 111, keeping the first fastener 10 and the second fastener 20 locked. With this structure, the user only needs to bring the first fastener 10 close to the second fastener 20 to achieve quick locking of the first fastener 10 and the second fastener 20 with the assistance of magnetic attraction.

[0058] Furthermore, to actuate the locking member 22 and cause the locking part 2241 to engage in the locking groove 111, the locking member 22 is provided with a third magnet. When the first fastener 10 and the second fastener 20 are separated, the locking member 221 is located in the first position. Under the magnetic force of the second magnet and the third magnet, the locking part 2241 is usually not within the range of the lock hole 211 (depending on the set magnetic force, the locking part 2241 may also be within the range of the lock hole 221; this embodiment is described with the locking part 2241 defaulting to not being within the range of the lock hole 211 as an example). When the first fastener 10 and the second fastener 20 are brought close together along the locking direction, the magnetic attraction between the first magnet and the second magnet will cause the locking tongue 11 of the first fastener 10 to be aligned with the lock hole 211 of the second fastener 20 and inserted. Since the locking part 2241 is outside the range of the lock hole 211, the latch 11 can directly enter the lock hole 211 without pushing the locking part 2241 during insertion, which is particularly beneficial for the insertion of the first fastener 10 into the second fastener 20. Furthermore, during the insertion of the latch 11 into the lock hole 211, the first magnet and the third magnet interact, ultimately attracting the third magnet to move towards the latch 11, thereby causing the locking part 2241 to move towards the latch 11 and laterally engage with the locking groove 111 of the latch 11, thus locking the first fastener 10 and the second fastener 20 together. Then, the locking member 221 is moved to the second position to ensure that the anti-accidental unlocking effect of the locking member 22 is effective.

[0059] In daily use, if the second fastener 20 is accidentally touched, the force will typically act directly on the exposed locking member 22. At this time, since the spatial position of the locking member 221 remains unchanged, it remains in the second position, and the locking member 22 is locked, unable to move in the unlocking direction. Therefore, under such accidental contact, regardless of how much external force presses on the locking member 22 in the unlocking direction, it cannot move in any direction due to the restriction of the locking member 221. Since the locking member 22 does not move, its locking portion 2241 cannot disengage from the locking groove 111. This completely avoids accidental unlocking of the first fastener 10 and the second fastener 20 due to accidental contact with the locking member 22, effectively ensuring the safe and stable connection of the first fastener 10 and the second fastener 20.

[0060] When it is necessary to separate the first fastener 10 and the second fastener 20, an external operating force is first applied to the movable locking member 221, driving the locking member 221 to shift from its original second position to the first position. When the locking member 221 is in the first position, it is in the unlocked state, and the locking member 22 is allowed to move. With the locking member 221 accurately and stably held in the first position, an operating force is then applied to operate the locking member 22. At this time, the locking member 22 can move smoothly along the unlocking direction and successfully drive the locking part 2241 to completely disengage from the locking groove 111. Thus, the latch 11 of the first fastener 10 can be pulled out from the lock hole 211 of the second fastener 20, successfully completing the active unlocking and separation of the first fastener 10 and the second fastener 20.

[0061] This invention upgrades the traditional buckle, which only requires a single operation of the locking element 22 to unlock, to a system where the locking element 221 must first be switched from the second position to the first position before the locking element 22 can move in the unlocking direction. This improvement in the unlocking process does not reduce the smoothness of the user's active operation, while providing a safety guarantee against accidental activation of the buckle.

[0062] Furthermore, to enhance the anti-accidental unlocking effect of the locking member 22, the locking member 221 switches between the first position and the second position by moving along the second direction, and the second direction is perpendicular to the unlocking direction. Setting the direction of movement of the locking member 221 between the unlocked state corresponding to the first position and the locked state corresponding to the second position to be different from the unlocking direction of the locking member 22, especially two mutually perpendicular directions, can completely decouple the movement trajectories of different operating actions from a spatial geometric dimension. This better avoids situations where an unexpected external impact from a single direction simultaneously triggers the locking member 221 to switch between the unlocked and locked states, and the locking member 22 to move along the unlocking direction. Specifically, this design, which sets the movement direction of the locking member 221 between the unlocked and locked states and the unlocking direction of the locking member 22 in two mutually perpendicular directions, ensures that any accidental touch in any unexpected direction can only physically activate the movement possibility in one direction at most, and absolutely cannot cause the locking member 221 to switch between the first and second positions and the locking member 22 to move in the unlocking direction at the same time, significantly enhancing the anti-accidental unlocking effect of the locking member 22.

[0063] Furthermore, the second fastener 20 is provided with a housing 21, and the housing 21 is provided with a clearance portion 212, and the locking member 221 is provided with a locking portion 2211; the lock hole 211 is provided on the housing 21.

[0064] When the locking member 221 is in the second position, the locking portion 2211 on the locking member 221 is not spatially aligned with the abutment portion 212 on the second fastener 20. The locking portion 2211 interferes with the housing 21 of the second fastener 20, thus restricting the movement of the locking member 22 along the unlocking direction. Specifically, when the locking member 221 is in the second position, the line connecting the locking portion 2211 and the abutment portion 212 intersects the unlocking direction, rather than being parallel to it. In this state, if the locking member 22 is operated along the unlocking direction, the locking member 22 will attempt to move along the unlocking direction. However, since the locking member 221 is mounted on the locking member 22, once the locking member 22 shows a tendency to move along the unlocking direction, its locking portion 2211 will immediately and rigidly interfere with the housing 21 of the second fastener 20. This interference directly locks out any possible displacement of the locking member 221 along the unlocking direction. Because the locking member 221 cannot move in the unlocking direction, the entire locking member 22 connected to the locking member 221 is firmly locked and cannot move at all in the unlocking direction. Since the locking member 22 does not move, the locking part 2241 cannot disengage from the locking groove 111 of the first fastener 10. This utilizes the rigid interference between the locking part 2211 and the housing 21 of the second fastener 20 to completely prevent the possibility of accidental disengagement of the fastener due to accidental contact in its physical structure.

[0065] When the locking member 221 is in the first position, the locking part 2211 corresponds to the clearance part 212, and the locking member 221 can pass through the clearance part 212 in the unlocking direction, allowing the locking member 22 to move in the unlocking direction. When an unlocking operation is required, the locking member 221 is first operated in the second direction, moving it from the second position to the first position corresponding to the unlocked state. When the locking member 221 is in the first position, the locking part 2211 is exactly aligned with the clearance part 212 on the second fastener 20, that is, at this time, the line connecting the locking part 2211 and the clearance part 212 is parallel to the unlocking direction, and the presence of the clearance part 212 provides the conditions for the movement of the locking part 2211. At this time, the interference between the locking member 22 and the housing 21 of the second fastener 20 disappears. Then, the locking member 22 is operated in the unlocking direction. As the locking member 22 moves along the unlocking direction, the locking member 221 also moves synchronously along the unlocking direction. At this time, the locking part 2211 can smoothly pass directly into the relief part 212 on the second fastener 20 along the unlocking direction. During the entire movement of the locking part 2211 into the relief part 212, the housing 21 no longer obstructs or interferes with the locking part 2211, so the locking member 22 can move smoothly. With the movement of the locking member 22, it successfully drives the locking part 2241 to disengage from the locking groove 111 of the first fastener 10. Thus, the locking tongue 11 of the first fastener 10 can be smoothly pulled out from the lock hole 211 of the second fastener 20, and finally the unlocking and separation of the first fastener 10 and the second fastener 20 are successfully achieved.

[0066] The clearance portion 212 is a hole-like structure provided on the housing 21, which can be a blind hole or a through hole.

[0067] Furthermore, to ensure that the locking member 221 will not unexpectedly shift between the first and second positions when subjected to unexpected external forces such as daily vibration and gravity, a stable structure is provided between the locking member 221 and the locking member 22 to ensure that the locking member 221 can be stably maintained in the first or second position. Furthermore, the locking member 221 has a protruding first limiting portion 22131, and the locking member 22 has a second limiting portion 2223 on its inner wall. In this embodiment, the first limiting portion 22131 and the second limiting portion 2223 protrude along a second direction. When the locking member 221 is in the second position, the second limiting part 2223 is located on the side of the first limiting part 22131 near the avoidance part 212, and the second limiting part 2223 abuts against the first limiting part 22131 to restrict the locking member 221 from moving to the first position. If an unexpected external force attempts to drive the locking member 221 away from the second position to move to the first position corresponding to the unlocked state, the first limiting part 22131 will immediately interfere with the second limiting part 2223. This abutting relationship can play a reliable physical barrier role, restricting and blocking the locking member 221 from unexpected displacement to the first position, thereby ensuring that the locking member 221 can be anchored in the second position and preventing the locking member 221 from displacing from the second position to the first position.

[0068] When the locking member 221 is in the first position, the second limiting part 2223 is located on the side of the first limiting part 22131 away from the avoidance part 212, and the second limiting part 2223 abuts against the first limiting part 22131 to restrict the locking member 221 from moving to the second position. This effectively restricts and prevents the locking member 221 from retracting or spontaneously rebounding to the second position without external force. This ensures that the locking member 221 can be stably anchored in the first position. The user does not need to press the locking member 221 while pressing the locking member 22, and even if the finger is released from the locking member 221, the locking member 221 will not slide back to the second position on its own. This greatly facilitates the unlocking of the first buckle 10 and the second buckle 20, achieving an excellent operating experience.

[0069] Furthermore, to ensure that the presence of the first limiting part 22131 and the second limiting part 2223 does not affect the switching of the locking member 221 between the first position and the second position, the cross-sections of the first limiting part 22131 and the second limiting part 2223 are both arc-shaped structures. When the switching operation force applied by the user to the locking member 221 reaches a certain level, it can cause the locking member 221 to undergo local elastic deformation, thereby allowing the first limiting part 22131 to pass over the second limiting part 2223 and reach its other side. Further, to provide a clear and rigid boundary for the reciprocating movement of the locking member 221 in the second direction, ensuring that the locking member 221 can accurately reach the first position and the second position, the locking member 22 is specifically provided with a first limiting block 2221 and a second limiting block 2222 for limiting the travel of the locking member 221. The first limiting block 2221 and the second limiting block 2222 are kept isolated from each other on the locking member 22, and the locking part 2211 is partially located between the first limiting block 2221 and the second limiting block 2222 in space. The two limiting blocks provide bidirectional limiting of the reciprocating movement of the locking part 2211, ensuring that the locking member 221 can accurately switch between the first position and the second position. When the locking member 221 moves from the second position to the first position, the locking part 2211 abuts against the first limiting block 2221, thereby restricting and preventing the locking member 221 from continuing to move in that direction. Under this rigid abutment, the locking member 221 is ensured to accurately stop at the first position, at which point the locking part 2211 is precisely aligned with the avoidance part 212 in space. When the locking member 221 moves from the first position to the second position, the locking part 2211 abuts against the second limiting block 2222, thereby restricting and preventing the locking member 221 from moving further. In this rigid abutment state, the locking member 221 is ensured to accurately stop at the second position. At this time, an interference fit is formed between the locking part 2211 and the housing 21 of the second fastener 20, and the anti-accidental unlocking mechanism is activated.

[0070] Furthermore, to provide an extremely stable and non-biased movement path for the reciprocating movement of the locking member 221 in the second direction, a groove is formed by the inner wall of the locking member 22, the first limiting block 2221, and the second limiting block 2222. The locking member 221 also includes a pushing part 2212 and a guiding part 2213. In terms of spatial assembly, the guiding part 2213 of the locking member 221 is partially movably mounted in the groove. The first limiting block 2221 and the second limiting block 2222 are located on one side of the guide portion 2213, and the inner wall of the locking member 22 is located on the other side of the guide portion 2213, constraining the guide portion 2213 in the slide groove, that is, constrained between the first limiting block 2221, the second limiting block 2222 and the inner wall of the locking member 22. This ensures that the locking member 22 can reciprocate along the second direction but cannot approach the inner wall of the locking member 22 or the first limiting block 2221 and the second limiting block 2222 along the unlocking direction, ensuring that the locking member 22 and the locking member 221 move simultaneously along the unlocking direction. This constraint completely eliminates the possibility of lateral swaying or torsional tilting of the locking member 221 when it moves, and mechanically ensures that the locking member 221 can switch back and forth between the first position corresponding to the unlocked state and the second position corresponding to the locked state extremely smoothly, accurately and without jamming.

[0071] To facilitate blind operation by the user, the pushing part 2212 of the locking member 221 is designed to at least partially protrude from the surface of the locking member 22. The locking part 2211 protrudes from the side of the guide part 2213 opposite to the pushing part 2212 and extends along the unlocking direction. This spatial layout, which sandwiches the guide part 2213 in the middle and distributes the pushing part 2212 and the locking part 2211 in a front-to-back orientation on both sides of the guide part 2213, ensures that each part performs its function and the transmission axis is extremely clear. This makes the overall mechanism not only extremely compact in appearance but also maximizes the accuracy and high reliability of the locking member 221 in switching between the first and second positions from a physical structure perspective.

[0072] Furthermore, the first limiting part 22131 is located at the end of the guide part 2213.

[0073] The locking component 22 includes an operating part 222, a connecting part 223, and a force transmission part 224. The operating part 222 is located outside the housing 21, and the force transmission part 224 is located inside the housing 21. The locking part 2241 is directly or indirectly connected to the force transmission part 224. The housing 21 is provided with a connecting hole 213, and the connecting part 223 passes through the connecting hole 213, connecting the operating part 222 and the force transmission part 224. By operating the operating part 222, the operating part 222 drives the force transmission part 224 through the connecting part 223, thereby causing the locking part 2241 to disengage from the locking groove 111.

[0074] Preferably, the operating part 222, the connecting part 223, and the force transmission part 224 are integrally formed; in other embodiments, they may be fixedly connected.

[0075] In this embodiment, the avoidance part 212 is specifically a recessed structure formed in part of the edge of the connecting hole 213, and the avoidance part 212 and the connecting hole 213 are spatially interconnected.

[0076] The operating part 222 has a first hole 2224 and a second hole 2225. The pushing part 2212 and the guiding part 2213 are movably disposed in the first hole 2224. The locking part 2211 passes through the second hole 2225 and faces the second fastener 20. The size of the second hole 2225 in the second direction is larger than the size of the clearance part 212 in the second direction, and the projection of the second hole 2225 in the second direction partially overlaps with the projection of the clearance part 212 in the second direction. More specifically, the projection of the second hole 2225 in the second direction covers the projection of the clearance part 212 in the second direction. The reciprocating movement range of the locking part 2211 in the second direction is limited within the second hole 2225. Regardless of whether the locking member 221 is located in the first position or the second position, the locking part 2211 is always within the second hole 2225.

[0077] Furthermore, in some embodiments, based on the aforementioned provision of the first limiting block 2221 and the second limiting block 2222, the first hole 2224 includes the groove, that is, the groove is part of the first hole 2224. The first hole 2224 includes a groove for mounting the guide portion 2213, and also includes a hole structure for the operating portion 222 to pass through to the outside of the locking member 22. The second hole 2225 includes the space between the first limiting block 2221 and the second limiting block 2222. That is, the inner space between the first limiting block 2221 and the second limiting block 2222 can constitute the second hole 2225, or it can constitute a part of the second hole 2225.

[0078] In this embodiment, the space between the first limiting block 2221 and the second limiting block 2222 forms part of the second hole 2225. The distance between the first limiting block 2221 and the second limiting block 2222 is equal to the dimension of other parts of the second hole 2225 in the second direction, and the space between the first limiting block 2221 and the second limiting block 2222 is aligned with other parts of the second hole 2225. With the above structure, in terms of movement, when the locking member 221 moves from the second position to the first position, the locking part 2211 simultaneously abuts against one edge of the first limiting block 2221 and the second hole 2225; similarly, when the locking member 221 moves from the first position to the second position, the locking part 2211 simultaneously abuts against the other edge of the second limiting block 2222 and the second hole 2225.

[0079] Furthermore, as a refined structure of the operating part 222, in this embodiment, the operating part 222 includes a main body and a cover plate, with the main body and the connecting part 223 forming an integral structure. The main body and the cover plate are assembled by a mating connection, and their interiors enclose a cavity structure. Specifically, a first limiting block 2221 and a second limiting block 2222 protrude from the side of the cover plate facing the main body; a notch is formed on the side wall of the main body near the connecting part 223, and this notch corresponds spatially to the space between the first limiting block 2221 and the second limiting block 2222. When the cover plate and the main body are assembled, the first limiting block 2221 and the second limiting block 2222 extend into the interior of the main body, and both are spaced apart from the inner wall of the main body. Based on the above-mentioned spatial enclosure relationship after mating, the aforementioned first hole 2224 and second hole 2225 are thus defined within the cavity structure of the operating part 222.

[0080] To allow sufficient travel for the locking mechanism 22 during unlocking, the operating part 222 and the housing 21 are spaced a certain distance apart in the unlocking direction when the locking state is engaged. At this time, a portion of the connecting part 223 connected to the operating part 222 is exposed, extending beyond the housing 21. Based on this spatial distance and extended configuration, when the locking mechanism 221 switches to the unlocked state (i.e., the first position), the user can press the operating part 222 to move it inwards towards the housing 21, thereby smoothly driving the entire locking mechanism 22 to displace in the unlocking direction to achieve unlocking.

[0081] Furthermore, as an overall morphological feature of the operating part 222 and the connecting part 223, in an optional embodiment, the combined structure of the operating part 222 and the connecting part 223 resembles a "T" shape. Specifically, both ends of the operating part 222 extend outward in the second direction, so that both ends of the operating part 222 extend outward from the outside of the connecting part 223. This "T"-shaped widening design effectively increases the outer surface area of ​​the operating part 222, facilitating the user's finger pressing operation and improving the comfort and stability of the unlocking operation. On the other hand, when the operating part 222 mates to form a cavity, the widened end structure provides more ample space for the first hole 2224, the second hole 2225, and the first limiting block 2221 and the second limiting block 2222, thereby facilitating structural design.

[0082] Furthermore, the connecting portion 223 is provided with a recessed limiting channel 2231, and the locking portion 2211 is partially disposed in the limiting channel 2231. The limiting channel 2231 and the second hole 2225 are connected, and the dimension of the limiting channel 2231 in the second direction is equal to the dimension of the second hole 2225 in the second direction, and the limiting channel 2231 and the second hole 2225 are aligned. Based on the layout where the clearance portion 212 is formed as a notch structure on the edge of the connecting hole 213 and the two are connected, the limiting channel 2231 can be connected to the clearance portion 212. At the same time, a portion of the limiting channel 2231 corresponds to the clearance portion 212 as a notch in the unlocking path.

[0083] In this structure, the locking part 2211 works as follows: When the locking member 221 is in the second position, the free end of the locking part 2211 located in the limiting channel 2231 is spatially misaligned with the avoidance part 212. If an attempt is made to move the locking member 22, the free end of the locking part 2211 will interfere with the housing 21, thus restricting the locking member 22 from moving in the unlocking direction. When the locking member 221 is switched to the first position by external force, the locking part 2211 moves in the second direction, thereby driving its free end to move precisely into the space corresponding to the limiting channel 2231 and the avoidance part 212. At this time, the interference is released. As the locking member 22 is pressed in the unlocking direction, the free end of the locking part 2211 can smoothly pass through the limiting channel 2231 and into the avoidance part 212 connected to it, so that the locking member 22 can smoothly complete the unlocking stroke.

[0084] It is worth noting that the limiting channel 2231 is not an essential structure in some embodiments. In another optional implementation, the connecting portion 223 is not provided with the limiting channel 2231. At this time, after the locking portion 2211 entirely or partially passes through the second hole portion 2225, the side surface or the free end of the locking portion 2211 directly abuts against the outer surface of the connecting portion 223. Under this structure, when the locking member 221 moves from the second position to the first position, or from the first position to the second position, the locking portion 2211 directly slides and switches on the surface of the connecting portion 223. When unlocking, the locking portion 2211 abutting against the surface of the connecting portion 223 directly displaces together with the connecting portion 223 in the unlocking direction, and selectively interferes with and is blocked by the housing 21 according to its current position, or directly smoothly penetrates into the corresponding avoiding portion 212. This channel-free design can further simplify the overall processing technology of the latching member 22 and reduce the complexity of mold manufacturing.

[0085] In this embodiment, the force transmission portion 224 is formed as a frame-shaped enclosed structure, specifically, it may present a structure similar to a "square" shape. The latching portion 2241 is disposed on the force transmission portion 224, and the latching portion 2241 is specifically located on the end structure of the force transmission portion 224 away from the avoiding portion 212. Through this spatial layout, the latching portion 2241 and the avoiding portion 212 maintain a spaced and opposite arrangement state. At this time, the moving direction of the latching portion 2241, that is, the first direction, is parallel to the unlocking direction.

[0086] Further, in another optional implementation, the force transmission portion 224 may also be a non-frame-shaped structure, presenting a structure similar to a "U" shape. At this time, the latching portion 2241 is configured as an independent structure and located at the side of the force transmission portion 224. In terms of transmission cooperation, through the oblique guiding action (for example, mutually matched inclined surfaces or chutes) provided on the matching surfaces of the two, the displacement applied by the operating portion 222 along the unlocking direction can be converted into a horizontal displacement perpendicular to the unlocking direction, so as to drive the latching portion 2241 to move in a linked manner. In this process, the moving direction of the latching portion 2241 is perpendicular to the unlocking direction, and is parallel to the second direction in which the locking member 221 performs state switching.

[0087] Although the present invention is disclosed through the above embodiments, the scope of the present invention is not limited thereto. Without departing from the concept of the present invention, the above components can be replaced with similar or equivalent elements known to those skilled in the art.

Claims

1. A fastener with anti-accidental unlocking function, characterized in that, include: A first fastener (10) is provided with a protruding locking tongue (11), and the locking tongue (11) is provided with a locking groove (111); and The second fastener (20) is provided with a locking hole (211) and a locking member (22), the locking member (22) including a locking part (2241); The locking tongue (11) can be inserted into the lock hole (211), and the locking part (2241) can be locked into the locking groove (111) in the first direction to realize the locking of the first fastener (10) and the second fastener (20); The locking member (22) is provided with a locking member (221), which can be switched between a first position and a second position; When the locking member (221) is in the first position, the locking member (22) is in the unlocked state. The locking member (22) can move along the unlocking direction so that the locking part (2241) disengages from the locking groove (111) to achieve unlocking. When the locking member (221) is in the second position, the locking member (22) is in a locked state, and the locking member (22) is locked and cannot move in the unlocking direction.

2. The fastener with anti-accidental unlocking function as described in claim 1, characterized in that, The locking member (221) switches between the first position and the second position by moving along the second direction, and the second direction is perpendicular to the unlocking direction.

3. A fastener with anti-accidental unlocking function as described in claim 1, characterized in that, The second fastener (20) is provided with a housing (21), the housing (21) is provided with a clearance part (212), and the locking member (221) is provided with a locking part (2211) arranged in the unlocking direction. When the locking member (221) is in the second position, the locking part (2211) interferes with the housing (21) to restrict the movement of the locking member (22) along the unlocking direction; When the locking member (221) is in the first position, the locking part (2211) corresponds to the avoidance part (212), and the locking member (221) can pass into the avoidance part (212) in the unlocking direction so that the locking member (22) can move in the unlocking direction.

4. A fastener with anti-accidental unlocking function as described in claim 3, characterized in that, The locking member (221) and the locking member (22) are mutually limited and cooperate to enable the locking member (221) to be selectively and stably held in the first position or the second position.

5. A fastener with anti-accidental unlocking function as described in claim 4, characterized in that, The locking member (221) is provided with a protruding first limiting part (22131), and the inner wall of the locking member (22) is provided with a second limiting part (2223). When the locking member (221) is in the second position, the second limiting part (2223) is located on the side of the first limiting part (22131) near the avoidance part (212), and the second limiting part (2223) abuts against the first limiting part (22131) to restrict the locking member (221) from moving to the first position; When the locking member (221) is in the first position, the second limiting part (2223) is located on the side of the first limiting part (22131) away from the avoidance part (212), and the second limiting part (2223) abuts against the first limiting part (22131) to restrict the locking member (221) from moving to the second position.

6. A fastener with anti-accidental unlocking function as described in claim 3, characterized in that, The locking member (22) is provided with a sliding groove extending along the second direction. The locking member (221) also includes a pushing part (2212) and a guiding part (2213). The guide portion (2213) is movably mounted in the slide groove, the push portion (2212) is at least partially exposed on the surface of the locking member (22), and the locking portion (2211) protrudes from the guide portion (2213) on the side opposite to the push portion (2212).

7. A fastener with anti-accidental unlocking function as described in claim 6, characterized in that, The locking member (22) is provided with a first limiting block (2221) and a second limiting block (2222) for limiting the movement of the locking member (221); the first limiting block (2221), the second limiting block (2222) and the inner wall of the locking member (22) are spaced apart to define the sliding groove; The locking part (2211) is located between the first limiting block (2221) and the second limiting block (2222); When the locking member (221) moves from the second position to the first position, the locking part (2211) abuts against the first limiting block (2221) to restrict the locking member (221) from continuing to move. At this time, the locking part (2211) is aligned with the avoidance part (212). When the locking member (221) moves from the first position to the second position, the locking part (2211) abuts against the second limiting block (2222) to restrict the locking member (221) from continuing to move. At this time, the locking part (2211) interferes with the housing (21) of the second fastener (20) and is misaligned with the avoidance part (212).

8. A fastener with anti-accidental unlocking function as described in claim 7, characterized in that, The first limiting part (22131) is located at the end of the guide part (2213).

9. A fastener with anti-accidental unlocking function as described in claim 3, characterized in that, The locking component (22) includes an operating part (222), a connecting part (223), and a force transmission part (224). The operating part (222) is located outside the housing (21), and the force transmission part (224) is located inside the housing (21); the connecting part (223) connects the operating part (222) and the force transmission part (224); The operating part (222) is provided with a through first hole (2224) and a second hole (2225). The locking member (221) is partially movably provided in the first hole (2224). The locking part (2211) passes through the second hole (2225) and faces the second fastener (20). The size of the second hole (2225) in the second direction is larger than the size of the clearance part (212) in the second direction, and the projection of the second hole (2225) in the second direction at least partially overlaps with the projection of the clearance part (212) in the second direction.

10. A fastener with anti-accidental unlocking function as described in claim 9, characterized in that, The housing (21) is provided with a connecting hole (213) through which the connecting part (223) passes. The clearance part (212) is constructed as a recessed structure formed on the edge of the connecting hole (213), and the clearance part (212) and the connecting hole (213) are spatially interconnected.

11. A fastener with anti-accidental unlocking function as described in claim 10, characterized in that, The connecting part (223) is provided with a recessed limiting channel (2231), and the locking part (2211) is partially provided in the limiting channel (2231). The limiting channel (2231) and the second hole (2225) are connected and aligned in the second direction. The size of the limiting channel (2231) in the second direction is equal to the size of the second hole (2225) in the second direction. The limiting channel (2231) is connected to the avoidance part (212), and a part of the limiting channel (2231) corresponds to the avoidance part (212) on the unlocking path.

12. A fastener with anti-accidental unlocking function as described in claim 9, characterized in that, The force transmission part (224) is formed as a frame-shaped enclosure structure. The locking part (2241) is integrally formed on the force transmission part (224) and located on the end structure of the force transmission part (224) away from the avoidance part (212). The locking part (2241) and the avoidance part (212) are arranged at a distance from each other.

13. A fastener with anti-accidental unlocking function as described in claim 9, characterized in that, The locking part (2241) is constructed as an independent structure and is located on the side of the force transmission part (224); the mating surface of the force transmission part (224) and the locking part (2241) is provided with an oblique guide structure, which is used to convert the displacement applied by the operation part (222) along the unlocking direction into a horizontal displacement perpendicular to the unlocking direction, so as to drive the locking part (2241) to move along a path parallel to the second direction in a coordinated manner.

Images