Inserting buckle

Abstract

The utility model discloses an inserting buckle, which relates to the technical field of accessories of clothes and bags and comprises a male buckle and a female buckle. The male buckle is provided with a pair of elastic arms, the elastic arms are connected with pins, first clamping parts are arranged at the positions, close to the elastic arms, of the pins, the first clamping parts are located on the end faces of the pins in the vertical direction, and first clamping blocks are further arranged on the outer side faces of the pins; the female buckle is provided with a pair of buckle frames, the buckle frames are provided with buckle grooves for the pins to be clamped in, clamping grooves for the first clamping blocks to pass through are formed in the buckle grooves, and the buckle frames are provided with first clamping faces and second clamping faces; and when the male buckle is buckled with the female buckle, the first clamping part is clamped with the first clamping surface, and the first clamping block is clamped with the second clamping surface. The plug-in buckle, the male buckle and the female buckle are mutually wrapped and embedded, six clamping positions are formed on the left side and the right side when the male buckle and the female buckle are clamped, and therefore firm connection is achieved. The male buckle can be inserted conveniently through guiding, and user operation is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of clothing and bag accessories technology, and in particular to a buckle. Background Technology

[0002] Buckles are a common detachable connection structure used for binding and securing. They are frequently found in applications such as shoulder straps, waist belts, and seat belts. Common buckles also consist of a male and a female buckle, but they often offer a less than ideal user experience.

[0003] In existing snap fasteners, the male and female buckles are prone to loosening under external force after being engaged, resulting in an unstable connection and failing to effectively prevent detachment. Therefore, existing technologies still have shortcomings and deficiencies. How to provide a new type of snap fastener with a secure connection is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this utility model is to provide a snap fastener that solves the technical problem in the prior art where, after the male and female snap fasteners are engaged, they are prone to loosening under external force, resulting in an unstable connection between the male and female snap fasteners and an inability to effectively prevent them from separating.

[0005] To achieve the above objectives, this utility model provides a snap fastener, including a male snap fastener and a female snap fastener;

[0006] The male buckle is provided with a pair of elastic arms, the elastic arms are connected to the pins, the pins are provided with a first retaining part near the elastic arms, the first retaining part is located on the end face of the pin in the vertical direction, and the outer side of the pin is also provided with a first retaining block;

[0007] The female buckle is provided with a pair of buckle frames, each buckle frame having a buckle groove for the pin to be snapped into, the buckle groove having a slot for the first buckle block to pass through, and the buckle frame having a first retaining surface and a second retaining surface;

[0008] When the male buckle and the female buckle are engaged, the first holding part engages with the first holding surface, and the first holding block engages with the second holding surface.

[0009] Preferably, there are two first holding parts, which are located on the upper and lower sides of the pin respectively; the buckle frame is provided with two second buckle blocks, which are located on the upper and lower sides of the buckle groove, and the two second buckle blocks define the buckle groove, and the first holding surface is the end face of the second buckle block;

[0010] The buckle frame has a second holding part on the side near the second card block, and the second holding surface is the end face of the second holding part.

[0011] Preferably, a male latch is provided between a pair of pins, and a female latch is provided between a pair of snap-fit ​​frames. One end of the male latch is concave, and the end of the female latch that is used to cooperate with the male latch is protruding. When the male latch and the female latch are engaged, the protruding end of the female latch engages with the concave end of the male latch.

[0012] Preferably, the male buckle head has a first front guide surface at its concave end and a second front guide surface at its convex end. When the male buckle is inserted into the female buckle, the first front guide surface and the second front guide surface fit together for guidance.

[0013] Preferably, the male buckle head has a first side guide surface at its concave end, which is located on both sides of the first front guide surface. The female buckle head has a second side guide surface at its convex end, which is located on both sides of the first side guide surface. When the male buckle is inserted into the female buckle, the first side guide surface and the second side guide surface fit together for guidance.

[0014] Preferably, the male buckle head is provided with a V-shaped guide surface, and the female buckle's snap-fit ​​frame is provided with a guide bevel for cooperating with the V-shaped guide surface. The V-shaped guide surface and the guide bevel are used to guide the male buckle when it is inserted into the female buckle.

[0015] Preferably, the elastic arm of the male buckle has two first protrusions located away from the pin. The two first protrusions are located on the upper and lower sides of the elastic arm. When the male buckle is fastened to the female buckle, the first protrusions contact and engage with the guide bevel of the buckle's snap-fit ​​frame.

[0016] Preferably, a second protrusion is provided at one concave end of the male buckle head, and a fixed plane is formed at the connection between the female buckle head and the buckle frame. When the male buckle and the female buckle are fastened, the second protrusion contacts and engages with the fixed plane.

[0017] Preferably, the female latch head is provided with limiting inclined surfaces on both sides, and the two limiting inclined surfaces on the same side of the female latch head form a V-shaped structure. A guiding inclined surface is also provided on one side of the limiting inclined surface.

[0018] Preferably, the inner side of the pin is provided with a protrusion, and the protrusion and the first locking block are respectively located on both sides of the pin.

[0019] Compared to the aforementioned background technology, the buckle provided by this utility model has a pin inserted into the snap-fit ​​groove of the snap-fit ​​frame. When the male and female buckles are engaged, the first retaining parts on the upper and lower sides of the male pin engage with the first retaining surface of the female buckle snap-fit ​​frame to form a limiting block, and the first retaining block of the male pin engages with the second retaining surface of the female buckle snap-fit ​​frame to form a limiting block. At this time, a total of six retaining positions are formed on the left and right sides, thereby achieving a reliable connection, preventing the male and female buckles from moving, and avoiding the male and female buckles from separating. By setting multiple retaining positions, the force distribution is more even when the male and female buckles are engaged, and it can withstand greater force. The connection between the male and female buckles is firm, which can effectively prevent the male and female buckles from separating. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the buckle structure provided in an embodiment of the present utility model;

[0022] Figure 2 This is a structural schematic diagram of the buckle provided in another embodiment of the present utility model;

[0023] Figure 3 This is one of the structural schematic diagrams of the female buckle in the snap fastener provided in the embodiments of this utility model;

[0024] Figure 4 This is the second schematic diagram of the structure of the female buckle in the snap fastener provided in the embodiment of this utility model;

[0025] Figure 5 This is the third schematic diagram of the structure of the female buckle in the snap fastener provided in this embodiment of the utility model;

[0026] Figure 6 This is the fourth schematic diagram of the structure of the female buckle in the snap fastener provided in the embodiment of this utility model;

[0027] Figure 7 This is one of the structural schematic diagrams of the buckle in the embodiment of the present utility model;

[0028] Figure 8 This is the second schematic diagram of the structure of the buckle provided in this embodiment of the utility model;

[0029] Figure 9 This is the third schematic diagram of the structure of the buckle provided in this embodiment of the utility model;

[0030] Figure 10 This is the fourth structural schematic diagram of the buckle provided in this embodiment of the utility model;

[0031] Figure 11 This is a schematic diagram of the female buckle being inserted into the female buckle according to an embodiment of the present utility model;

[0032] Figure 12 This is a schematic diagram showing another angle at which the female buckle is inserted into the female buckle, as provided in an embodiment of this utility model.

[0033] Figure 13 This is a schematic diagram illustrating the buckle release process provided in an embodiment of this utility model.

[0034] Figures 1 to 13 Chinese reference numerals: 1. Male buckle; 101. Elastic arm; 1011. First protrusion; 1012. Side protrusion; 102. Pin; 1021. First holding part; 1022. First locking block; 1023. Protrusion; 103. Male buckle lock head; 1031. First front guide surface; 1032. First side guide surface; 1033. V-shaped guide surface; 1034. Second protrusion; 104. First fixing part; 2. Female buckle; 201. Buckle frame; 2011. Second locking block; 2012. Second holding part; 2013. Guide bevel; 2014. Entrance guide surface; 202. Female buckle lock head; 2021. Second front guide surface; 2022. Second side guide surface; 2023. Fixing plane; 2024. Limiting bevel; 2025. Guide bevel; 203. Second fixing part. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] This utility model provides a snap fastener that, through multiple interlocking locking mechanisms, makes the male snap fastener 1 and the female snap fastener 2 more securely fastened, and makes the fastening and unfastening operations convenient and quick.

[0038] Please refer to this as well. Figures 1 to 12 The buckle provided by this utility model includes a male buckle 1 and a female buckle 2.

[0039] The male buckle 1 is provided with a pair of elastic arms 101, the elastic arms 101 are connected to the pins 102, the pins 102 are provided with a first holding part 1021 near the elastic arms 101, the first holding part 1021 is located on the end face of the pins 102 in the vertical direction, and the outer side of the pins 102 is also provided with a first locking block 1022.

[0040] The female buckle 2 is provided with a pair of buckle frames 201. The buckle frame 201 is provided with a buckle groove for the pin 102 to be snapped into. The buckle groove is provided with a slot for the first snap block 1022 to pass through. The buckle frame is provided with a first snapping surface and a second snapping surface.

[0041] When male buckle 1 and female buckle 2 are engaged, the first holding part 1021 engages with the first holding surface, and the first holding block 1022 engages with the second holding surface.

[0042] In use, the pin 102 is inserted into the snap-fit ​​slot of the snap-fit ​​frame 201. When the male snap-fit ​​1 and the female snap-fit ​​2 are engaged, the first holding parts 1021 on the upper and lower sides of the male snap-fit ​​pin 102 engage with the first holding surface of the female snap-fit ​​frame 201 to form a limiting block. At the same time, the first holding block 1022 of the male snap-fit ​​pin 102 engages with the second holding surface of the female snap-fit ​​frame 201 to form a limiting block. At this time, multiple holding positions are formed on the left and right sides, thereby achieving a secure connection, preventing the male snap-fit ​​1 and the female snap-fit ​​2 from moving, and avoiding the male snap-fit ​​1 from separating from the female snap-fit ​​2.

[0043] With this design, by setting multiple holding positions, the force distribution is more even when the male buckle 1 and female buckle 2 are engaged compared to existing buckles, and it can withstand greater force. The connection between the male buckle 1 and female buckle 2 is firm, which can effectively prevent the problem of the male buckle 1 and female buckle 2 coming apart.

[0044] Please refer to this as well. Figures 3 to 12 Two first holding parts 1021 are provided, and the two first holding parts 1021 are located on the upper and lower sides of the plug 102 respectively; the buckle frame is provided with two second buckle blocks 2011, and the two second buckle blocks 2011 are located on the upper and lower sides of the buckle groove. The two second buckle blocks 2011 define and form a buckle groove, and the first holding surface is the end face of the second buckle block 2011.

[0045] The buckle frame 201 has a second holding part 2012 on the side near the second buckle block 2011, and the second holding surface is the end face of the second holding part 2012.

[0046] Please refer to this as well. Figures 3 to 12 A male latch head 103 is provided between a pair of pins 102, and a female latch head 202 is provided between a pair of latch frames 201. One end of the male latch head 103 is concave, and the end of the female latch head 202 that is used to cooperate with the male latch head 103 is protruding. When the male latch 1 and the female latch 2 are engaged, the protruding end of the female latch head 202 is engaged with the concave end of the male latch head 103.

[0047] When male buckle 1 and female buckle 2 are engaged, the prong 102 of male buckle 1 has a roughly convex structure, while the internal snap-fit ​​groove of the snap-fit ​​frame 201 of female buckle 2 has a concave structure. When the prong 102 is inserted into the snap-fit ​​groove, the snap-fit ​​frame 201 of female buckle 2 wraps around the prong 102 to achieve a fitting. By setting male buckle lock head 103 and female buckle lock head 202, when the prong 102 is inserted into the snap-fit ​​groove, the convex end of female buckle lock head 202 engages with the concave end of male buckle lock head 103, and the concave end of male buckle lock head 103 wraps around the convex end of female buckle lock head 202 to achieve a fitting.

[0048] With this configuration, male buckle 1 and female buckle 2 wrap around and interlock with each other, ensuring connection strength. Under the condition of the same material, the force can be distributed to multiple points, thus it can withstand greater external force and effectively prevent male buckle 1 from separating from female buckle 2.

[0049] Please refer to this as well. Figures 3 to 12 The male buckle 103 has a first front guide surface 1031 at its concave end and a second front guide surface 2021 at its convex end. When the male buckle 1 is inserted into the female buckle 2, the first front guide surface 1031 and the second front guide surface 2021 fit together for guidance.

[0050] Please refer to this as well. Figures 3 to 12 The male buckle 103 is recessed at one end and is provided with a first side guide surface 1032. The first side guide surface 1032 is located on both sides of the first front guide surface 1031. The female buckle 202 is protruding at one end and is provided with a second side guide surface 2022. The second side guide surface 2022 is located on both sides of the first side guide surface 1032. When the male buckle 1 is inserted into the female buckle 2, the first side guide surface 1032 and the second side guide surface 2022 fit together for guidance.

[0051] When the male latch 1 is inserted into the female latch 2, the protruding end of the female latch head 202 is embedded into the concave end of the male latch head 103. The first front guide surface 1031 of the male latch head 103 and the second front guide surface 2021 of the female latch head 202 are in contact for guidance. At the same time, the first side guide surface 1032 of the male latch head 103 and the second side guide surface 2022 of the female latch head 202 are in contact for guidance. Through the above guidance, the user can use it more easily and conveniently. When the male latch 1 and the female latch 2 are engaged, the first front guide surface 1031 and the second front guide surface 2021 form a limit, and at the same time, the first side guide surface 1032 and the second side guide surface 2022 form a limit, ensuring the connection strength between the female latch head 202 and the female latch head 202, thereby ensuring that the male latch 1 and the female latch 2 are securely fixed and preventing them from separating.

[0052] Please refer to this as well. Figures 3 to 12The male buckle 103 is provided with a V-shaped guide surface 1033, and the female buckle 2's buckle frame 201 is provided with a guide bevel 2013 for cooperating with the V-shaped guide surface 1033. The V-shaped guide surface 1033 and the guide bevel 2013 are used to guide the male buckle 1 when it is inserted into the female buckle 2.

[0053] When male buckle 1 is inserted into female buckle 2, the V-shaped guide surface 1033 of male buckle lock head 103 conforms to the guide bevel 2013 of female buckle 2's buckle frame 201 for guidance, facilitating the insertion of male buckle 1. When male buckle 1 and female buckle 2 are engaged, the V-shaped guide surface 1033 and guide bevel 2013 form a limit, ensuring the connection strength between female buckle lock heads 202 and female buckle lock heads 202, making the engagement of male buckle 1 and female buckle 2 more stable and secure.

[0054] Please refer to this as well. Figures 3 to 12 The elastic arm 101 of the male buckle 1 is provided with two first protrusions 1011 away from the pin 102. The two first protrusions 1011 are located on the upper and lower sides of the elastic arm 101. When the male buckle 1 and the female buckle 2 are fastened, the first protrusions 1011 contact and engage with the guide bevel 2013 provided on the buckle frame 201 of the female buckle 2.

[0055] In addition, the side of the elastic arm 101 is provided with a side protrusion 1012, which is located on the side of the elastic arm 101 away from the male latch head 103.

[0056] By setting the first protrusion 1011, when the male buckle 1 and the female buckle 2 are fastened, the first protrusion 1011 on the upper and lower sides of the elastic arm 101 contacts the guide inclined edge 2013 set on the buckle frame 201 of the female buckle 2 to form an interference fit, which prevents shaking and thus avoids shaking after the male buckle 1 and the female buckle 2 are fastened.

[0057] Please refer to this as well. Figures 3 to 12 A second protrusion 1034 is provided at the concave end of the male latch head 103. A fixed plane 2023 is formed at the connection between the female latch head 202 and the latch frame 201. When the male latch 1 and the female latch 2 are engaged, the second protrusion 1034 contacts and engages with the fixed plane 2023. Specifically, there are two second protrusions 1034, located on the upper and lower sides of the concave end of the male latch head 103.

[0058] By setting the second protrusion, when the male latch head 103 and the female latch head 202 are engaged, the second protrusion 1034 on the upper and lower sides of the concave end of the male latch head 103 contacts the aforementioned fixed plane 2023 to form an interference fit, which serves to prevent shaking and avoids shaking after the male latch head 103 and the female latch head 202 are engaged, thereby preventing the latch from shaking.

[0059] Please refer to this as well. Figures 3 to 12The female latch head 202 has limiting slopes 2024 on both sides, and the two limiting slopes 2024 on the same side of the female latch head 202 form a V-shaped structure. In addition, a guide slope 2025 is provided on one side of the limiting slope 2024, and the guide slope 2025 is located at the connection between the female latch head 202 and the latch frame 201.

[0060] Please refer to this as well. Figures 3 to 12 The entrance of the snap-fit ​​frame 201 is provided with an entrance guide surface 2014. By setting the entrance guide surface 2014, the interior of the snap-fit ​​frame 201 gradually narrows from the entrance of the snap-fit ​​frame 201 to the inner wall of the snap-fit ​​frame 201. The entrance guide surface 2014 serves to guide the pin 102 into the interior of the snap-fit ​​frame 201.

[0061] Please refer to this as well. Figures 3 to 12 The inner side of the pin 102 is provided with a protrusion 1023, and the protrusion 1023 and the first locking block 1022 are located on both sides of the pin 102.

[0062] Please refer to this as well. Figures 3 to 12 The male buckle 1 has a first fixing part 104 for fixing the webbing at the end away from the female buckle 2, and the female buckle 2 has a second fixing part 203 for fixing the webbing at the end away from the male buckle 1.

[0063] By providing a first fixing part 104 and a second fixing part 203, it is convenient for the webbing to pass through the first fixing part 104 and be fixed to the male buckle 1, and pass through the second fixing part 203 and be fixed to the female buckle 2 when in use.

[0064] Please refer to this as well. Figures 1 to 13 The specific usage process of the buckle provided by this utility model is as follows:

[0065] When male buckle 1 and female buckle 2 are engaged: male buckle 1 is inserted into female buckle 2 along the insertion direction. The male buckle 1 prong 102 enters the buckle frame 201 along the entrance guide surface 2014 of the female buckle 2 buckle frame 201. Under the action of the inner wall of the buckle frame 201, the male buckle 1 prong 102 undergoes elastic deformation due to friction with the inner wall of the buckle frame 201 and retracts inward. The guide slope 2013 of the female buckle 2 buckle frame 201 and the V-shaped guide surface 1033 of the male buckle 1 form a limiting guide area, guiding the male buckle 1 into place. At the same time, the male buckle locks. The first front guide surface 1031 of the head 103 fits against the second front guide surface 2021 of the female latch head 202 for guidance, and the first side guide surface 1032 of the male latch head 103 fits against the second side guide surface 2022 of the female latch head 202 for guidance, ensuring guidance in the front, back, left, right, up and down directions, providing a large margin of error for the insertion of the male latch 1, so that the male latch 1 can be easily inserted, especially for scenarios where users have inconvenient hands and feet or blind spots, improving the stability and efficiency of insertion;

[0066] During insertion, the male buckle 1 pin 102 contacts the inclined surface of the second locking block 2011 inside the female buckle 2 locking frame 201, and is further compressed and deformed inward. As the male buckle 1 pin 102 continues to be inserted, the first holding part 1021 of the pin 102 passes over the second locking block 2011 of the female buckle 2, so that the compression originally subjected to the male buckle 1 pin 102 is released. The male buckle 1 pin 102 and the elastic arm 101 return to their original shape, so that the first holding part 1021 of the male buckle 1 pin 102 and the second locking block 2011 of the female buckle 2 form a blocking limit. At the same time, the second holding part 2012 of the female buckle 2 locking frame 201 and the first locking block 1022 of the male buckle 1 pin 102 form a blocking limit. At this time, a total of six locking positions are formed on the left and right sides, which firmly lock the male buckle 1 and the female buckle 2, prevent the male buckle 1 and the female buckle 2 from moving, and prevent the male buckle 1 from separating from the female buckle 2.

[0067] The male latch head 103 and the female latch head 202 fit together to form a stable structure. The fixing plane 2023 at the female latch head 202 fits into the wall surface at the concave end of the male latch head 103 to limit and fix the latch in the vertical direction. At the same time, the V-shaped guide surface 1033 fits into the guide bevel 2013, which achieves a second fixation of the male and female latches 2 in the left and right directions. The female latch 2 is fixed in the inner wall of the latch frame 201 and the elastic arm 101 of the male latch 1. Based on the first fixation in the left and right directions, the male latch 1 and the female latch 2 are now fully locked together in all directions, ensuring the strength of the latches in all directions and forming a state in which the male latch 1 and the female latch 2 fit together.

[0068] When unfastening: The user uses their fingers or knuckles to pinch the pins 102 on both sides of the male buckle 1 and squeeze them inward (F1 force). This causes the pins 102 to bend and deform along the elastic arm 101. On the one hand, this causes the first holding part 1021 of the male buckle 1 pin 102 to disengage from the second holding block 2011 of the female buckle 2. On the other hand, the end of the male buckle 1 pin 102 contacts the guide slope 2025 and guides the pin 102 out. The end of the male buckle 1 pin 102 rubs against the guide slope 2025, and the F1 force is converted into the F2 force. That is, the pin 102 slides out along the direction of the F2 force until the male buckle 1 disengages from the female buckle 2. At the same time, the protrusion 1023 on the inner side of the male buckle 1 pin 102 contacts the limiting slope 2024 due to bending deformation, allowing the male buckle 1 to pop out smoothly along the slope direction, thus achieving the purpose of unfastening. This makes the male buckle 1 easier and more reliable to unfasten.

[0069] The buckle provided by this utility model has a male buckle 1 and a female buckle 2 that wrap around and fit together, ensuring connection strength. Under the condition of the same material, the force can be distributed to multiple points, thus withstanding greater external forces. When the male buckle 1 is inserted into the female buckle 2, the V-shaped guide surface 1033 of the male buckle lock head 103 fits against the guide bevel 2013 of the female buckle 2's buckle frame 201 for guidance. The first front guide surface 1031 of the male buckle lock head 103 fits against the second front guide surface 2021 of the female buckle lock head 202 for guidance. Simultaneously, the first side guide surface 1032 of the male buckle lock head 103 fits against the second side guide surface of the female buckle lock head 202. The surface 2022 is fitted to guide the male buckle 1, facilitating its insertion and user operation. When the male buckle 1 and female buckle 2 are engaged, six holding positions are formed on both sides, ensuring a secure connection and preventing the male buckle 1 and female buckle 2 from moving or separating. The second protrusions 1034 on the upper and lower sides of the recessed end of the male buckle lock head 103 contact the aforementioned fixed plane 2023 to form an interference fit. The first protrusions 1011 on the upper and lower sides of the elastic arm 101 contact the guide bevel 2013 of the buckle frame 201 of the female buckle 2 to form an interference fit, which prevents shaking and avoids shaking after the male buckle 1 and female buckle 2 are engaged.

[0070] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0071] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A snap fastener, characterized in that, Includes male buckle (1) and female buckle (2); The male buckle (1) is provided with a pair of elastic arms (101), the elastic arms (101) are connected to pins (102), the pins (102) are provided with a first holding part (1021) near the elastic arms (101), the first holding part (1021) is located on the end face of the pins (102) in the vertical direction, and the outer side of the pins (102) is also provided with a first locking block (1022); The female buckle (2) is provided with a pair of buckle frames (201), the buckle frame (201) is provided with a buckle groove for the pin (102) to be snapped into, the buckle groove is provided with a slot for the first buckle block (1022) to pass through, and the buckle frame is provided with a first holding surface and a second holding surface; When the male buckle (1) and the female buckle (2) are engaged, the first holding part (1021) engages with the first holding surface, and the first card block (1022) engages with the second holding surface.

2. The buckle according to claim 1, characterized in that, Two first retaining parts (1021) are provided, and the two first retaining parts (1021) are located on the upper and lower sides of the pin (102) respectively; the buckle frame is provided with two second buckle blocks (2011), and the two second buckle blocks (2011) are located on the upper and lower sides of the buckle groove. The two second buckle blocks (2011) define the buckle groove, and the first retaining surface is the end face of the second buckle block (2011); The buckle frame (201) has a second holding part (2012) on the side near the second card block (2011), and the second holding surface is the end face of the second holding part (2012).

3. The buckle according to claim 1 or 2, characterized in that, A male latch head (103) is provided between a pair of the aforementioned pins (102), and a female latch head (202) is provided between a pair of the aforementioned buckle frames (201). One end of the male latch head (103) is concave, and the end of the female latch head (202) that is used to cooperate with the male latch head (103) is convex. When the male latch (1) and the female latch (2) are engaged, the convex end of the female latch head (202) is engaged with the concave end of the male latch head (103).

4. The buckle according to claim 3, characterized in that, The male buckle (103) has a first front guide surface (1031) at its concave end and a second front guide surface (2021) at its convex end. When the male buckle (1) is inserted into the female buckle (2), the first front guide surface (1031) and the second front guide surface (2021) fit together for guidance.

5. The buckle according to claim 4, characterized in that, The male buckle lock head (103) is further provided with a first side guide surface (1032) at one concave end. The first side guide surface (1032) is located on both sides of the first front guide surface (1031). The female buckle lock head (202) is further provided with a second side guide surface (2022) at one convex end. The second side guide surface (2022) is located on both sides of the first side guide surface (1032). When the male buckle (1) is inserted into the female buckle (2), the first side guide surface (1032) and the second side guide surface (2022) fit together for guidance.

6. The buckle according to claim 5, characterized in that, The male buckle lock head (103) is provided with a V-shaped guide surface (1033), and the buckle frame (201) of the female buckle (2) is provided with a guide bevel (2013) for cooperating with the V-shaped guide surface (1033). The V-shaped guide surface (1033) and the guide bevel (2013) are used to guide the male buckle (1) when it is inserted into the female buckle (2).

7. The buckle according to claim 1, characterized in that, The male buckle (1) has two first protrusions (1011) on its elastic arm (101) away from the pin (102). The two first protrusions (1011) are located on the upper and lower sides of the elastic arm (101). When the male buckle (1) is fastened to the female buckle (2), the first protrusions (1011) contact and engage with the guide bevel (2013) of the buckle frame (201) of the female buckle (2).

8. The buckle according to claim 3, characterized in that, The male buckle lock head (103) has a second protrusion (1034) at one concave end. The female buckle lock head (202) and the buckle frame (201) form a fixed plane (2023). When the male buckle (1) and the female buckle (2) are fastened, the second protrusion (1034) contacts and engages with the fixed plane (2023).

9. The buckle according to claim 3, characterized in that, The female latch head (202) has limiting slopes (2024) on both sides. The two limiting slopes (2024) on the same side of the female latch head (202) form a V-shaped structure. A guiding slope (2025) is also provided on one side of the limiting slope (2024).

10. The snap fastener according to claim 1 or 2, characterized in that, The inner side of the pin (102) is provided with a protrusion (1023), and the protrusion (1023) and the first locking block (1022) are respectively located on both sides of the pin (102).

Images