fastener

Abstract

The application discloses a buckle, which comprises a male buckle, a female buckle, a release operating member and a lever pivoted to the male buckle or the female buckle around a pivot center line, one of the male buckle and the female buckle is provided with a locking part, and the other of the male buckle and the female buckle is provided with a counter-locked part for cooperating with the locking part; the male buckle and the female buckle are counter-inserted in a direction close to each other to lock the locking part and the counter-locked part; the release operating member is movably arranged on the side wall of the male buckle or the female buckle where the lever is located; the pivot center line is located between the first end and the second end of the lever, the release operating member is connected with the first end of the lever, the second end of the lever is arranged in linkage with the locking part, and the lever is rotated around the pivot center line under the driving of the release operating member, and the locking part is disconnected from the locking of the counter-locked part under the linkage of the rotated lever. The buckle has the advantages of strong concealment of the release operating member, convenient release and simple structure.

Description

[0001] This application is a divisional application of Mingmen Swiss AG's invention patent application (filed on February 1, 2019, application number 201910106228.1, invention title "Fastener"). Technical Field

[0002] This invention relates to the field of infant and toddler vehicles, and more particularly to a fastener. Background Technology

[0003] With the continuous development of the economy and the continuous progress of science and technology, people's lives are provided with an extremely rich variety of material consumer goods, and infant and toddler vehicles are one of these many material consumer goods.

[0004] As we all know, braided straps are indispensable in infant and toddler vehicles; and fasteners are essential for the easy assembly and disassembly of different braided straps.

[0005] Currently, traditional buckles consist of a male buckle, a female buckle, and a button. The male and female buckles engage and secure each other, while the button releases them. The button is located either on the front or back of the male or female buckle, making it highly visible and easy to find and press. However, precisely because the button is so conspicuous, infants riding in infant vehicles can easily spot it and instinctively touch it, increasing the risk of accidental release. Furthermore, traditional buckles require significant force to release the button, making the release operation more difficult. Additionally, the button's location on both sides of the buckle increases the chance of it scraping against external objects, further increasing the risk of accidental release. While buckles with concealed buttons exist, their complex structure and inconvenient release operation make them less desirable.

[0006] Therefore, there is an urgent need for a fastener with a highly concealed and easy-to-operate release mechanism to overcome the above-mentioned defects. Summary of the Invention

[0007] The purpose of this invention is to provide a fastener with a highly concealed and convenient unlocking mechanism.

[0008] To achieve the above objectives, the fastener of the present invention includes a male buckle, a female buckle, a release operation member, and a lever pivotally connected to the male buckle or the female buckle about a pivot center line. One of the male buckle and the female buckle has a locking part, and the other of the male buckle and the female buckle has a mating locking part for engaging with the locking part; the male buckle and the female buckle are mated together in a direction close to each other so that the locking part and the mating locking part are locked; the release operation member is movably disposed on the side wall of the male buckle or the female buckle where the lever is located; the pivot center line is located between the first end and the second end of the lever, the release operation member is connected to the first end of the lever, the second end of the lever is linked to the locking part, and the lever rotates about the pivot center line under the drive of the release operation member, thereby disengaging the locking part from the mating locking part through the rotating lever.

[0009] Preferably, the locking part is an elastic structure or is arranged in a movable manner, and the lever-linked locking part can be elastically deformed or moved to disengage from the locking part of the mating locking part.

[0010] Preferably, the locking part includes a spring arm and a lock head for locking with the mating locking part. The lock head is connected to the spring arm, and the spring arm always has the tendency to drive the lock head and the mating locking part to lock together. The second end of the lever is connected to the spring arm.

[0011] Preferably, the pivot center line is arranged along the interlocking direction, and the lever linkage elastic arm undergoes elastic deformation along the interlocking direction.

[0012] Preferably, there are two locking parts arranged side by side at intervals along the interlocking direction, each locking part corresponding to a release operation and a lever, the release operation being located on the opposite side walls of the male or female buckle with the locking part.

[0013] Preferably, the fastener of the present invention further includes a first magnetic structure and a second magnetic structure. The first magnetic structure is disposed on the male buckle and the second magnetic structure is disposed on the female buckle. The first magnetic structure and the second magnetic structure magnetically attract or magnetically repel each other during the insertion process of the male buckle and the female buckle.

[0014] Preferably, the male buckle has a first recessed cavity, the female buckle has a second recessed cavity, the first magnetic structure is embedded in the first recessed cavity, and the second magnetic structure is embedded in the second recessed cavity.

[0015] Preferably, the first embedding cavity is aligned with the second embedding cavity along the insertion direction.

[0016] Preferably, one of the lever and the spring arm has an elongated linkage slot, and the other of the lever and the spring arm has a linkage protrusion that extends into and slides within the linkage slot.

[0017] Preferably, the linkage slot is an oblong slot, and the linkage protrusion is a columnar structure.

[0018] Preferably, the release mechanism is slidably inserted into the side wall of the male or female buckle with the locking part along the interlocking insertion direction.

[0019] Preferably, the fastener of the present invention further includes a reset member that provides a reset force for the release operation member.

[0020] Preferably, the reset member is an elastic member disposed between the release operation member and the male or female buckle with the locking part.

[0021] Preferably, the male or female buckle with the locking part has guide posts arranged in an alternating direction to the mating direction, and the elastic element is sleeved on the guide posts.

[0022] Preferably, the reset member includes a third magnetic structure mounted on a male or female buckle with a locking portion and a fourth magnetic structure mounted on the release operation member. The third magnetic structure and the fourth magnetic structure repel each other and always have a tendency to drive the release operation member to reset.

[0023] Preferably, it also includes a pivot shaft arranged along the insertion direction, with a first end of the pivot shaft mounted on the lever and a second end of the pivot shaft mounted on a male or female buckle with a locking part, and the pivot center line located on the pivot shaft.

[0024] Preferably, the male or female buckle with the locking part has a receiving cavity for accommodating the second end of the pivot shaft.

[0025] Ideally, the lever and the pivot axis together form an integrated structure.

[0026] Preferably, the mating locking part includes a locking structure and a pushing structure arranged sequentially along the mating direction away from the male or female buckle of the mating locking part. During the mating process, the pushing structure pushes the lock head to drive the spring arm to produce elastic deformation, causing the lock head to slide to the position where it is locked with the mating locking structure. The lever-linked spring arm performs elastic deformation, causing the lock head to disengage from the locking structure.

[0027] Preferably, the end of the push-pull structure has a first inclined structure that is inclined relative to the insertion direction, and the lock head has a second inclined structure that matches the first inclined structure; during the insertion process, the push-pull structure passes over the lock head and slides to the position where the locking structure and the lock head are locked by means of the push-pull structure of the first inclined structure pushing the second inclined structure.

[0028] Preferably, the lock head has a hook-shaped structure, and the matching lock structure is a hook groove.

[0029] Preferably, the male or female buckle with locking part includes an outer cover and a buckle body assembled inside the outer cover. The locking part is formed on the buckle body. The outer cover has a mating hole for the mating locking part to pass through and lock with the locking part. The unlocking operation member is provided on the side wall of the outer cover.

[0030] Preferably, at least one of the mating locking part and the male or female buckle with the locking part has a clearance space, which allows the mating locking part, after being locked with the locking part, to slide relative to the locking part to a bias position along a bias direction that is intersecting the mating direction; the male or female buckle with the locking part has a mating part corresponding to the bias position, and when the mating locking part is in the bias position, it also abuts against the mating part to prevent the male and female buckles from being pulled out of each other.

[0031] Preferably, the mating locking part includes a locking structure, and the clearance space on the mating locking part is a clearance groove. The sidewall of the clearance groove divides the locking structure into a first part for locking with the locking part and a second part for blocking with the mating part along the offset direction.

[0032] Preferably, the mating locking part further includes a pushing structure. The locking structure and the pushing structure are arranged sequentially along the mating direction away from the male or female buckle with the mating locking part. The pushing structure is separated from the clearance space of the mating locking part along the mating direction. During the mating process, the pushing structure causes the locking part to undergo elastic deformation or movement, causing the locking part to slide to the position where it locks with the first part. The lever-linked locking part undergoes elastic deformation or movement to disengage from the locking with the first part.

[0033] Compared with the prior art, the buckle of the present invention is pivotally connected to the male or female buckle by means of a lever around a pivot center line, and the pivot center line is located between the first end and the second end of the lever. Therefore, the first end and the second end of the lever can pivot synchronously around the pivot center line. Since the release operation member is connected to the first end of the lever and the second end of the lever is linked to the locking part, when the male and female buckles are locked and need to be released, the release operation member is operated. The release operation member pushes the first end to pivot around the pivot center line, and at the same time, the second end pivots synchronously around the pivot center line, thereby causing the locking part to disengage from the locking part of the mating locking part, so as to allow the male and female buckles to be pulled out of each other. The fastener of this invention utilizes the lever principle to achieve the actuation relationship between the release mechanism, lever, and locking part. This leverage principle allows for effortless and convenient operation over long distances, eliminating the need for a traditionally positioned release mechanism. By locating the release mechanism on the side wall of the male or female buckle where the lever is located, the fastener achieves excellent concealment, making it difficult for infants and young children to notice. This eliminates the safety hazard of accidental activation by infants due to curiosity caused by a conspicuous release mechanism. It also eliminates the safety hazard of traditional release mechanisms, which are often located on the front or back of the male or female buckle and easily unlocked by external objects. Therefore, the fastener of this invention, while ensuring excellent concealment of the release mechanism, also offers the advantages of convenient release operation and simple structure. Attached Figure Description

[0034] Figure 1This is a three-dimensional structural diagram of the fastener of the present invention viewed from the front.

[0035] Figure 2 This is a three-dimensional structural diagram of the fastener of the present invention viewed from the reverse side.

[0036] Figure 3 This is a three-dimensional exploded view of the fastener of the present invention from the front.

[0037] Figure 4 This is a three-dimensional exploded view of the fastener of the present invention from the reverse side.

[0038] Figure 5 This is a three-dimensional structural diagram of the fastener of the present invention, showing the male buckle detaching from the female buckle and viewed from the front.

[0039] Figure 6 This is a three-dimensional structural diagram of the fastener of the present invention, showing the male buckle detaching from the female buckle and viewed from the reverse side.

[0040] Figure 7 This is a three-dimensional structural diagram of the female buckle in the fastener of the present invention when the outer cover and the buckle body are separated from each other, viewed from the front.

[0041] Figure 8 This is a three-dimensional structural diagram of the female buckle in the buckle of the present invention, showing that the outer cover and the buckle body are separated and viewed from the reverse side.

[0042] Figure 9 yes Figure 7 A schematic diagram of the three-dimensional structure of the female buckle hidden behind the outer cover. Detailed Implementation

[0043] To illustrate the technical content and structural features of the present invention in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0044] Please see Figures 1 to 4 The fastener 100 of the present invention includes a male fastener 1, a female fastener 2, a release operation member 3, and a lever 4. The female fastener 2 has a locking part 5, and the male fastener 1 has a mating locking part 6 for engaging with the locking part 5; the male fastener 1 and the female fastener 2 are mated together in a direction close to each other (e.g., Figure 3The locking part 5 is locked to the mating locking part 6 in the direction indicated by the arrow P. Of course, in other embodiments, the male buckle 1 may have a locking part 5, and correspondingly, the female buckle 2 may have a mating locking part 6 for engaging with the locking part 5, which can also achieve locking of the male buckle 1 and the female buckle 2, so it is not limited to this. The lever 4 is pivotally connected to the female buckle 2 about a pivot center line L, and the release operation member 3 is movably provided on the side wall 21 of the female buckle 2. Of course, in other embodiments, the lever 4 may be pivotally connected to the male buckle 1 about a pivot center line L, and correspondingly, the release operation member 3 is movably provided on the side wall of the male buckle 1, so it is not limited to this. The pivot center line L is located between the first end 41 and the second end 42 of the lever 4, so that the first end 41 and the second end 42 of the lever 4 both pivot about the pivot center line L. The release operation component 3 is connected to the first end 41 of the lever 4, and the second end 42 of the lever 4 is linked to the locking part 5. The lever 4 rotates around the pivot center line L under the drive of the release operation component 3. The rotating lever 4 is linked to the locking part 5 to disengage from the locking part 6. That is to say, when the user operates the release operation component 3, the lever 4 is driven by the release operation component 3. Specifically, in this embodiment, the release operation member 3, lever 4, and locking part 5 are all located on the female buckle 2, making it easier for the release operation member 3 to drive the lever 4 to disengage the locking part 5 from the locking part 6. This results in more efficient space utilization and a simpler, more compact structure. Of course, in other embodiments, the carriers (male buckle 1 or female buckle 2) on which the release operation member 3 and lever 4 are located are different from those on which the locking part 5 is located. In these cases, the linkage protrusion 43 described below the lever 4 is inserted into the linkage slot 53 after the male buckle 1 and female buckle 2 are inserted. When the male buckle 1 and female buckle 2 are pulled apart, the linkage protrusion 43 is pulled out of the linkage slot 53. However, this also achieves the above effect, so it is not a limitation. To facilitate the assembly of the male buckle 1 and female buckle 2 with external braided straps, each of the male buckle 1 and female buckle 2 has an assembly end for assembling the braided strap. The assembly end has a through hole 14 for the braided strap to pass through, but this is not the only limitation. More specifically, as follows:

[0045] Please see Figures 3 to 4 ,as well as Figures 7 to 8The locking part 5 is an elastic structure. The lever 4 drives the locking part 5 to deform elastically and disengage from the locking part 6. Of course, depending on actual needs, the locking part 5 can be arranged movably, such as sliding or rotating, so that the locking part 5 can slide or rotate relative to its carrier (referring to the male buckle 1 or female buckle 2). This can also achieve the purpose of the lever 4 driving the locking part 4 to move and disengage from the locking part 6. Therefore, it is not limited to this. Specifically, the locking part 5 includes a spring arm 51 and a lock head 52 for locking with the mating locking part 6. The lock head 52 is connected to the spring arm 51, and the spring arm 51 always has a tendency to drive the lock head 52 to lock with the mating locking part 6. The second end 42 of the lever 4 is linked to the spring arm 51, so the lever 4 drives the spring arm 51 to elastically deform, causing the lock head 52 to disengage from the mating locking part 6. Preferably, the spring arm 51 also always has a tendency to drive the lever 4 to reset the release operation member 3. Therefore, when the release operation member 3 is released, the spring arm 51 returns to its original position, causing the lever 4 to pivot around the pivot center line L. The pivoted lever 4 then drives the release operation member 3 to reset, thus facilitating the user's next operation of the release operation member 3. More specifically, as shown in the figure... Figure 3 , Figure 4 and Figure 9 The spring arm 51 has an elongated linkage slot 53, and the lever 4 has a linkage protrusion 43 that extends into and slides within the linkage slot 53. The linkage slot 53 and the linkage protrusion 43 are used to achieve the linkage arrangement between the second end of the lever 4 and the spring arm 51. For example, the linkage slot 53 is an oblong slot, and the linkage protrusion 43 is a cylindrical structure, which is more conducive to the sliding of the linkage protrusion 43 within the linkage slot 53, and to the linkage between the second end of the lever 4 and the spring arm 51 during the sliding process of the linkage protrusion 43 within the linkage slot 53, but is not limited to this.

[0046] Please see Figure 9 The pivot center line L is arranged along the interpolation direction P. The lever 4 is linked to the elastic arm 51, which undergoes elastic deformation along the interpolation direction. For example, the elastic arm 51 along the interpolation direction... Figure 9 The double arrow M indicates that the elastic deformation facilitates the lever 4's linkage with the spring arm 51 to disengage the lock head 52 from the mating locking part 6. Specifically, in this embodiment, there are two locking parts 5 arranged side by side at intervals along the interlacing direction. Each locking part 5 corresponds to a release operation member 3 and a lever 4. The release operation members 3 are located on the opposite side walls 21 of the female buckle 2, which makes it easier for the operator to perform the pinching operation with two fingers of one hand. This not only makes the operation more convenient but also makes the locking part 5 and the mating locking part 6 more reliable. However, this is not the only advantage.

[0047] Please see Figures 3 to 5The mating locking part 6 includes a locking structure 62 and a pushing structure 61 arranged sequentially along the mating direction P1 away from the male buckle 1. During the mating process, the pushing structure 61 pushes the lock head 52 to drive the spring arm 51 to undergo elastic deformation, causing the lock head 52 to slide to a position where it is locked with the locking structure 62. The lever 4 then drives the spring arm 51 to undergo elastic deformation, causing the lock head 52 to disengage from the locking structure 62. Preferably, the end of the pushing structure 61 has a first part that is inclined relative to the mating direction P. An inclined structure 611 is provided, and the lock head 52 has a second inclined structure 521 that matches the first inclined structure 611. Therefore, during the insertion process, the pushing structure 61 is pushed by the first inclined structure 611 against the second inclined structure 521, causing the pushing structure 61 to pass over the lock head 52 and slide to the position where the locking structure 62 and the lock head 52 are locked. For example, the lock head 52 is a hook-shaped structure, and the locking structure 62 is a hook groove, so that the locking between the lock head 52 and the locking structure 62 is more reliable, but it is not limited to this.

[0048] Please see Figure 3 and Figure 4 The fastener 100 of the present invention further includes a pivot shaft 8 arranged along the insertion direction P. The first end of the pivot shaft 8 is mounted on the lever 4, and the second end of the pivot shaft 8 is mounted on the female buckle 2. The pivot center line L is located on the pivot shaft 8. Preferably, the lever 4 and the pivot shaft 8 together form an integral structure to facilitate the assembly of the lever 4 and the female buckle 2, but this is not a limitation. Specifically, the female buckle 2 has a receiving cavity 23 for accommodating the second end of the pivot shaft 8, so that the second end of the pivot shaft 8 can be assembled into the receiving cavity 23 of the female buckle 2.

[0049] like Figures 2 to 4 ,as well as Figures 8 to 9As shown, the fastener 100 of the present invention further includes a first magnetic structure 9 and a second magnetic structure 10. The first magnetic structure 9 is disposed on the male buckle 1, and the second magnetic structure 10 is disposed on the female buckle 2. The first magnetic structure 9 and the second magnetic structure 10 are magnetically attracted to each other during the insertion process of the male buckle 1 and the female buckle 2. On the one hand, this makes the fastening of the male buckle 1 and the female buckle 2 faster. On the other hand, even if the locking part 5 and the mating locking part 6 are disengaged, they remain engaged due to the mutual magnetic attraction of the first magnetic structure 9 and the second magnetic structure 10, thereby preventing accidental unlocking and ensuring the safety of the fastener 100 of the present invention. Of course, in other embodiments, the first magnetic structure 9 and the second magnetic structure 10 are magnetically repelled by each other during the insertion process of the male buckle 1 and the female buckle 2, so as to make unlocking more convenient. Therefore, this is not a limitation. Specifically, the male buckle 1 has a first embedding cavity 11, and the female buckle 2 has a second embedding cavity 24. A first magnetic structure 9 is embedded in the first embedding cavity 11, and a second magnetic structure 10 is embedded in the second embedding cavity 24. Preferably, the first embedding cavity 11 is aligned with the second embedding cavity 24 along the insertion direction to strengthen the attraction between the first magnetic structure 9 and the second magnetic structure 10, but this is not a limitation. Specifically, the second embedding cavity 24 of the female buckle 2 is directly opposite the space between the two lock heads 52 along the insertion direction, as shown in the diagram. Figure 4 As shown, the buckle 100 of the present invention makes reasonable use of space and is compact in size; of course, in other embodiments, the first embedding cavity 11 of the male buckle 1 is directly opposite the space between the two lock heads 52 along the insertion direction, so it is not limited thereto.

[0050] Please refer to Figures 3 to 4 ,as well as Figures 7 to 8The release operation member 3 is slidably inserted into the side wall 21 of the female buckle 2 having the locking part 5 along the interleaved insertion direction. For example, the release operation member 3 is slidably inserted into the side wall 21 of the female buckle 2 along the direction indicated by the double arrow M. Preferably, the side wall 21 is the side wall 21 of the female buckle 2 in the length direction. Of course, it is the side wall 21 in the width direction of the female buckle 2 according to actual needs, so it is not limited to this. Specifically, the fastener 100 of the present invention also includes a reset member that provides a reset force for the release operation member 3. The reset member provides a reset force for the reset of the release operation member 3, and cooperates with the elastic force of the spring arm 51, so that the reset of the release operation member 3 is faster and more reliable. For example, in this embodiment, the reset member is an elastic member 7 provided between the release operation member 3 and the female buckle 2. The elastic member 7 can be selected as a compression spring, a tension spring, or rubber, etc., but is not limited to this. To ensure reliable elastic deformation of the elastic element 7, the female buckle 2 has guide posts 22 arranged in a staggered direction relative to the insertion direction. For example, the guide posts 22 are arranged in the direction indicated by the double arrow M, and the elastic element 7 is sleeved on the guide posts 22, but this is not a limitation. It is understood that in other embodiments, the reset element may also include a third magnetic structure (not shown in the figure) mounted on the female buckle 2 and a fourth magnetic structure (not shown in the figure) mounted on the release operation element 3. The third magnetic structure and the fourth magnetic structure repel each other and always have a tendency to drive the release operation element 3 to reset, so this is not a limitation. In addition, it should be noted that since the release operation element 3 can be reset by the reset of the spring arm 51, the reset element can be deleted according to actual needs.

[0051] Please see Figures 3 to 9To improve the safety of the fastener 100 of the present invention in preventing accidental release, both the mating locking part 6 and the female buckle 2 with the locking part 5 are provided with a clearance space 12. When the male buckle 1 and / or the female buckle 2 are pulled, the clearance space 12 allows the mating locking part 6, after being locked with the locking part 5, to slide relative to the locking part 5 in a bias direction N that is intersecting the mating direction P to a bias position. Of course, depending on actual needs, the clearance space 12 can be provided by either the mating locking part 6 or the female buckle 2 with the locking part 5, which can also allow the mating locking part 6 to slide to the bias position after being locked with the locking part 5, so it is not limited to this. The female buckle 2 with locking part 5 is provided with a mating part (not shown in the figure) at a corresponding offset position. When the mating locking part 6 is in the offset position, it also abuts against the mating part to prevent the male buckle 1 and the female buckle 2 from being pulled out of each other. Of course, depending on actual needs, the male buckle 1 with locking part 5 may be provided with a mating part at a corresponding offset position, so it is not limited to this. Specifically, the clearance space 12 on the mating locking part 6 is a clearance groove, which allows the mating locking part 6 to slide smoothly to the offset position and abut against the mating part. The side groove wall 12a of the clearance groove divides the mating locking structure 62 into a first part 621 for locking with the locking part 5 and a second part 622 for abutting against the mating part 12 along the offset direction N. Preferably, there are two clearance grooves arranged opposite to each other on the mating locking part 6. That is, there are two clearance grooves, so that the side groove wall 12a of the clearance groove divides into two first parts 621 and two second parts 622. The two first parts 621 are arranged opposite to each other, and the two second parts 622 are arranged opposite to each other. This makes it convenient for the user not to spend too much time observing the mating positioning between the mating locking part 6 and the mating hole 251 described below during the mating process. However, the number of second parts 622 on the mating locking part 6 is not limited to this. More specifically, the push structure 61 is separated from the clearance space 12 of the mating locking part 6 along the parallel mating direction P. During the mating process, the push structure 61 pushes the spring arm 51 to undergo elastic deformation, causing the lock head 52 to slide to the position where it is locked with the first part 621. The lever 4 drives the spring arm 51 to undergo elastic deformation and disengage from the lock with the first part 621. Understandably, when the locking part 5 is considered as a whole, the pushing structure 61 pushes the locking part 5 during the insertion process, causing it to elastically deform and slide to a position where it locks with the first part 621. The lever 4 then causes the locking part 5 to elastically deform and disengage from the first part 621. Similarly, when the locking part 5 is movably arranged in the female buckle 2 or male buckle 1, the pushing structure 61 pushes the locking part 5 during the insertion process, causing it to slide to a position where it locks with the first part 621. The lever 4 then causes the locking part 5 to move and disengage from the first part 621. Therefore, this is not a limitation.

[0052] Please see Figures 3 to 4 ,as well as Figures 7 to 8The female buckle 2 with locking part 5 includes an outer cover 25 and a buckle body 26 assembled inside the outer cover 25. The locking part 5 is formed on the buckle body 26. The outer cover 25 has a mating hole 251 for the mating locking part 6 to pass through and lock with the locking part 5. The clearance space 12 on the female buckle 2 is a clearance hole located on the outer cover 25 and communicating with the mating hole 251. By communicating with the mating hole 251 through the clearance hole, the mating locking part 6 can slide to the offset position on the clearance hole when it passes through the mating hole 251 and locks with the locking part 5. The mating part is formed on the outer cover 25. Preferably, the mating part is located on the inner surface of the outer cover 25 adjacent to the hole wall 12b of the clearance hole. Therefore, when the mating locking part 6 slides to the offset position in the clearance hole, the second part 622 can quickly abut against the mating part, thereby having the advantages of quick prevention, simple and quick operation and more time saving.

[0053] Please see Figures 3 to 7 When the mating locking part 6 is in the offset position, the side wall 12a of the clearance groove is in close contact with the wall 12b of the clearance hole, and the mating locking part 6 also abuts against the mating part when it is in the offset position. Therefore, by means of the close contact between the side wall 12a of the clearance groove and the wall 12b of the clearance hole, the abutment between the second part 622 of the mating locking part 6 and the mating part is stronger and more effectively prevents accidental unlocking. Specifically, the surface of the side wall 12a of the clearance groove and the surface of the wall 12b of the clearance hole are both flat. Of course, depending on actual needs, the surface of the side wall 12a of the clearance groove and the surface of the wall 12b of the clearance hole can be mutually mating curved surfaces, so it is not limited to this. For example, the insertion hole 251 is an arc hole and the clearance hole is a rectangular hole. The arc hole and the rectangular hole intersect and connect, so that the insertion locking part 6 passes through the insertion hole 251 and then slides to the offset position on the clearance hole. Therefore, it is not limited to this.

[0054] Please see Figure 4 , Figure 7 and Figure 9 The buckle body 26 has a clearance notch 261 that corresponds to the clearance hole along the insertion direction P. The second part 622 slides into the clearance notch 261 during the process of the insertion locking part 6 sliding to the offset position. With the help of the clearance notch 261, the insertion locking part 6 will not be disturbed by obstacles inside the buckle body 26 during the process of sliding in the clearance hole, so that the second part 622 of the insertion locking part 6 can quickly reach the offset position and resist the mating part.

[0055] Referring to the accompanying drawings, the working principle of the fastener 100 of the present invention will be explained: The operator simultaneously squeezes the release operation piece 3 at both side walls 21, and each release operation piece 3 drives the corresponding lever 4 to rotate around the pivot center line L, thereby causing the rotating lever 4 to disengage the locking part 5 from the locking part 6; since the locking part 6 is still abutting against the mating part at this time, the male buckle 1 and the female buckle 2 cannot be pulled out; therefore, the operator needs to slide the locking part 6 away from the abutting position to allow the male buckle 1 and the female buckle 2 to be pulled out; since the first magnetic structure 9 and the second magnetic structure 10 are mutually attracted, the operator also needs to manually pull the male buckle 1 and the female buckle 2 out.

[0056] Compared with the prior art, the buckle 100 of the present invention is pivotally connected to the male buckle 1 or the female buckle 2 by means of a lever 4 around a pivot center line L, and the pivot center line L is located between the first end 41 and the second end 42 of the lever 4. Therefore, the first end 41 and the second end 42 of the lever 4 can pivot synchronously around the pivot center line L. Since the release operation member 3 is connected to the first end 41 of the lever 4 and the second end 42 of the lever 4 is linked to the locking part 5, when the male buckle 1 and the female buckle 2 are locked and need to be released, the release operation member 3 is operated. The release operation member 3 pushes the first end 41 to pivot around the pivot center line L, and at the same time, the second end 42 pivots synchronously around the pivot center line L, thereby linking the locking part 5 to disengage from the locking between it and the mating locking part 6, so as to allow the male buckle 1 and the female buckle 2 to be pulled out of each other. The buckle 100 of the present invention utilizes the lever principle to achieve the actuation relationship between the release operation component 3, the lever 4, and the locking part 5. This leverage principle provides advantages such as effortless and convenient long-distance operation, allowing the release operation component 3 to be positioned independently of traditional methods. By locating the release operation component 3 on the side wall of the male buckle 1 or female buckle 2 where the lever 4 is located, the buckle 100 achieves strong concealment, making it difficult for infants and young children to notice. This eliminates the safety hazard of accidental contact due to curiosity caused by the conspicuous release operation component 3, and also eliminates the safety hazard of accidental unlocking caused by the release operation component 3 being located on the front or back surface of the male buckle 1 or female buckle 2. Therefore, the buckle 100 of the present invention, while ensuring strong concealment of the release operation component 3, also has the advantages of convenient release operation and simple structure.

[0057] It is worth noting that the double arrow P mentioned above points in the vertical direction of the buckle 100 of the present invention, the double arrow M points in the width direction of the buckle 100, and the double arrow N points in the length direction of the buckle 100. Of course, depending on actual needs, the double arrow M can also point in the length direction of the buckle 100, and correspondingly, the double arrow N points in the width direction of the buckle 100, but it is not limited to this.

[0058] The above-disclosed examples are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are within the scope of the present invention.

Claims

1. A female buckle, comprising a locking part (5), wherein, The female buckle is provided with a lever (4) and a release operation member (3). The lever is pivotally connected to the female buckle, and the release operation member is movably provided on the female buckle. The release operation member is connected to the first end of the lever, and the second end of the lever is connected to the locking part.

2. The female buckle according to claim 1, characterized in that, The female buckle is used to engage with a male buckle, the male buckle has an interlocking locking part (6), the lever pivots under the action of the release operation, and the pivoting lever causes the locking part to disengage from the interlocking locking part.

3. The female buckle according to claim 2, characterized in that, The locking part is an elastic structure or is arranged in a movable manner. The lever causes the locking part to elastically deform or move, thereby disengaging from the locking part of the mating locking part.

4. The female buckle according to claim 1, characterized in that, The female buckle is used to engage with a male buckle. The male buckle has an interlocking locking part (6). The locking part includes a spring arm and a lock head. The lock head is connected to the spring arm. The lever drives the spring arm to elastically deform along the direction that is interlocked between the male buckle and the female buckle.

5. The female buckle according to claim 4, characterized in that, The pivot center line of the lever intersects with the direction of elastic deformation of the elastic arm.

6. The female buckle according to claim 1, characterized in that, The female buckle includes two locking parts arranged side by side with a gap between them. Each of the two locking parts corresponds to one of the release operation elements and one of the levers. The two release operation elements are located on two opposite side walls of the female buckle.

7. The female buckle according to claim 2, characterized in that, The male buckle is provided with a first magnetic structure, and the female buckle is provided with a second magnetic structure. The first magnetic structure and the second magnetic structure magnetically attract or repel each other during the insertion of the male buckle and the female buckle.

8. The female buckle according to claim 7, characterized in that, The male buckle has a first embedding cavity, and the female buckle has a second embedding cavity. The first magnetic structure is embedded in the first embedding cavity, and the second magnetic structure is embedded in the second embedding cavity.

9. The female buckle according to claim 8, characterized in that, The first embedding cavity is aligned with the second embedding cavity along the insertion direction.

10. The female buckle according to claim 4, characterized in that, One of the lever and the spring arm has a linkage slot, and the other of the lever and the spring arm has a linkage protrusion that extends into and slides within the linkage slot.

11. The female buckle according to claim 10, characterized in that, The linkage slot is an elongated slot, and the linkage protrusion is a cylindrical structure.

12. The female buckle according to claim 2, characterized in that, The release mechanism is slidably inserted into the side wall of the female buckle in a direction that alternates between the male buckle and the female buckle.

13. The female buckle according to claim 1, characterized in that, It also includes a reset element that provides a reset force for the release operation element.

14. The female buckle according to claim 13, characterized in that, The reset element is an elastic element located between the release operation element and the female buckle.

15. The female buckle according to claim 14, characterized in that, The female buckle has a guide post, and the elastic element is sleeved on the guide post.

16. The female buckle according to claim 13, characterized in that, The reset component includes a third magnetic structure mounted on the female buckle and a fourth magnetic structure mounted on the release operation component. The third magnetic structure and the fourth magnetic structure repel each other and always have a tendency to drive the release operation component to reset.

17. The female buckle according to claim 5, characterized in that, It also includes a pivot shaft arranged along the interlocking direction, with a first end of the pivot shaft mounted on the lever and a second end of the pivot shaft mounted on a male or female buckle having the locking part, and the pivot center line located on the pivot shaft.

18. The female buckle according to claim 17, characterized in that, The male or female buckle with the locking part has a receiving cavity for accommodating the second end of the pivot shaft.

19. The female buckle according to claim 17, characterized in that, The lever and the pivot shaft together form an integrated structure.

20. The female buckle according to claim 2, characterized in that, The female buckle includes an outer cover and a buckle body assembled inside the outer cover. The locking part is formed on the buckle body. The outer cover has a mating hole for the mating locking part to pass through and lock with the locking part. The unlocking operation member is provided on the side wall of the outer cover.

21. The female buckle according to claim 2, characterized in that, At least one of the interlocking locking part and the female buckle has an clearance space. The clearance space allows the interlocking locking part, after being locked with the locking part, to slide relative to the locking part to an offset position along an offset direction that is intersecting the interlocking directions of the male buckle and the female buckle. The female buckle has a mating part corresponding to the offset position. When the interlocking locking part is in the offset position, it also abuts against the mating part to prevent the male buckle and the female buckle from being pulled out of each other.

22. The female buckle according to claim 21, characterized in that, The interlocking locking part includes a locking structure, and the clearance space on the interlocking locking part is a clearance groove. The sidewall of the clearance groove divides the locking structure into a first part for locking with the locking part and a second part for blocking with the mating part along the offset direction.

23. The female buckle according to claim 22, characterized in that, The interlocking locking part further includes a pushing structure. The locking structure and the pushing structure are arranged sequentially along the interlocking direction away from the male buckle. The pushing structure is separated from the clearance space of the interlocking locking part along the interlocking direction. During the interlocking process, the pushing structure pushes the locking part to generate elastic deformation, causing the locking part to slide to a position where it locks with the first part. The lever causes the locking part to elastically deform or move, thus disengaging from the first part.

24. The female buckle according to claim 2, characterized in that, The locking part includes a lock head, the male buckle has a mating locking part (6), the mating locking part includes a locking structure, and the unlocking operation member moves laterally to move the lock head laterally and disengage from the locking structure.

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