Fastener

Abstract

A fastener comprises a first fastener, a second fastener and a third fastener. The first fastener comprises a body and a first through hole, and the first through hole is formed in the body in a penetrating mode. The second fastener is matched with the first fastener and comprises a seat body, an extension body and a second through hole, the extension body is formed by extending outwards from the seat body, and the second through hole is formed in the seat body in a penetrating mode; the third fastener is arranged in the second fastener and comprises a base part, a plurality of tooth parts and a plurality of grooves, the tooth parts are formed by extending outwards from two opposite side faces of the base part, and the grooves are defined by the tooth parts in a surrounding mode; wherein the seat body is provided with two arc guide surfaces, and each arc guide surface has a curvature.

Description

Technical Field

[0001] The present disclosure relates to a buckle, and more particularly to a buckle with a plurality of teeth. Background Art

[0002] Most of the existing rope buckles disclosed in CN217390120U are two-piece structures, for example, comprising a male buckle and a female buckle assembled with each other, wherein the male buckle and the female buckle can clamp and fix the rope by the resilience of the elastic section.

[0003] However, the total length of this two-piece structure is long and the product feasibility is low. In addition, the bite section extending from the elastic section for fixing the rope is in a straight line, and the compression area of ​​the rope is easily affected by the elastic force of the elastic section, resulting in poor retention and instability. Utility Model Content

[0004] The purpose of the present invention is to provide a buckle to solve at least one of the above problems.

[0005] The present disclosure provides a fastener, comprising: a first fastener, comprising a main body, a first accommodating space and a first through hole, the first accommodating space is formed inside the main body, the first through hole is formed through the main body and connected to the first accommodating space; a second fastener, assembled with the first fastener, and comprising a base, an extension body, a second accommodating space and a second through hole, the base body is located on one side of the main body and away from the first through hole, the extension body is formed by extending outward from the base body, the second accommodating space is defined by the base body and the extension body, the second through hole is formed through the base body and connected to the second accommodating space, wherein the base body has at least one arc guide surface, and the arc guide surface has a curvature; and a third fastener, arranged in the second accommodating space, and comprising a base, a plurality of teeth and a plurality of grooves, the teeth are formed by extending outward from two opposite side surfaces of the base, and the grooves are respectively defined by the teeth.

[0006] As in the aforementioned clip, the tooth portion corresponds to the arc guide surface according to the curvature.

[0007] As in the aforementioned buckle, the grooves arrange the teeth in an array.

[0008] As in the aforementioned buckle, the main body, the seat, the extension body and the teeth respectively constitute a first rope threading channel and a second rope threading channel, and the first rope threading channel and the second rope threading channel respectively allow a rope body to pass from the second through hole to the first through hole. The first rope threading channel and the second rope threading channel located at the first through hole have a first width, and the first rope threading channel and the second rope threading channel located at the second through hole have a second width, and the second width is greater than the first width.

[0009] As in the aforementioned buckle, it also includes an elastic member arranged in the second accommodating space, the bottom surface of the base is recessed with a blind hole, one end of the elastic member abuts against the extension body, and the other end of the elastic member is accommodated in the blind hole.

[0010] As in the aforementioned buckle, the buckle can be transformed between a first release state, a second release state and a locked state. When in the first release state and the second release state, the extension body and the base jointly compress the elastic member and move the base away from the seat body, thereby the rope body can move in the first rope threading channel and the second rope threading channel. When in the locked state, the base is adjacent to the seat body, and the rope body is clamped by the teeth and the seat body and cannot move in the first rope threading channel and the second rope threading channel.

[0011] As in the aforementioned buckle, the extension body has four extension columns, a connecting portion and a positioning column, the extension columns are extended outward from the base body and are spaced apart from each other, the connecting portion is connected to the end of the extension column, the positioning column is extended outward from the connecting portion and faces the second through hole, and one end of the elastic member is sleeved on the positioning column and abuts the connecting portion.

[0012] As in the aforementioned fastener, the first fastener also includes two snap blocks, which are protruded from the main body and face the first accommodating space. The third fastener also includes two guide columns and two snap parts, and the guide columns are respectively extended outward from the bottom surface of the base and are spaced apart from each other and are respectively located on opposite sides of the connecting part. The snap parts are respectively extended outward from the sides of the guide columns.

[0013] As in the aforementioned buckle, the main body has two abutting surfaces, and the seat body has two contact surfaces, and the abutting surfaces correspond to the contact surfaces respectively.

[0014] As in the aforementioned buckle, the connecting portion has two opposite inclined surfaces, and the main body has two opposite guiding surfaces, and the inclined surfaces correspond to the guiding surfaces respectively.

[0015] As in the aforementioned clip, when the clip changes from the locked state to the second released state, the first fastener moves along the first direction, and the buckle blocks respectively contact the buckle parts and simultaneously pull the third fastener, at this time, the abutment surfaces are respectively separated from the contact surfaces, the inclined surfaces are respectively away from the guide surfaces, the blind hole and the connecting part jointly compress the elastic part, and the teeth are respectively away from the arc guide surfaces.

[0016] As in the aforementioned clip, when the clip changes from the second release state to the locking state, the first fastener moves along the second direction and the elastic member rebounds, thereby making the teeth adjacent to the arc guide surface and the inclined surface adjacent to the guide surface until the abutment surfaces contact the contact surfaces respectively.

[0017] As in the aforementioned clip, when the clip changes from the locked state to the first released state, the first fastener moves along the second direction, the snap blocks are respectively disengaged from the snap parts, and the first fastener contacts the contact surfaces with the abutment surfaces respectively and pushes the second fastener at the same time. At this time, the blind hole and the connecting part jointly compress the elastic part, and the teeth are respectively away from the arc guide surfaces.

[0018] As in the aforementioned clip, when the clip changes from the first release state to the locking state, the first fastener moves in the first direction and the elastic member rebounds, thereby making the teeth respectively adjacent to the arc guide surfaces until the buckle blocks respectively contact the buckle parts.

[0019] As in the aforementioned buckle, the first rope threading channel and the second rope threading channel are respectively formed by the space surrounded and defined by the tooth portion and the arc guide surface and the space surrounded and defined by the inclined surface and the guide surface.

[0020] As in the aforementioned buckle, the connecting portion has an H-shaped cross-section.

[0021] As in the aforementioned buckle, the elastic member is a compression spring.

[0022] As in the aforementioned buckle, the body is a hollow tapered structure.

[0023] In summary, the buckle disclosed in the present invention has multiple teeth on the third buckle so that the multiple teeth can hook the rope body, and the pressure area of ​​the rope body is not easily affected by the elastic force of the elastic member, thereby increasing the fixing force of the rope body and maintaining a stable retention force. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an overall schematic diagram of the buckle disclosed in the present invention.

[0025] Figure 2 It is a schematic diagram of the exploded view of the buckle disclosed in the present invention.

[0026] Figure 3 It is a schematic diagram of a first fastener in the fastener disclosed in the present invention from one perspective.

[0027] Figure 4 It is a schematic diagram of the bottom view of the second fastener in the fastener disclosed in the present invention.

[0028] Figure 5 It is a schematic diagram of the third fastener in the fastener disclosed in the present invention.

[0029] Figure 6 for Figure 1 Schematic diagram along the AA section.

[0030] Figure 7 and Figure 8Schematic diagram of different cross-sections of the buckle of the present invention in a locked state.

[0031] Fig. 9 and Fig.10 Schematic diagram of different cross-sections of the buckle of the present invention in a first release state.

[0032] Fig.11 and Fig.12 Schematic diagram of different cross-sections of the buckle of the present invention in the second release state.

[0033] Fig.13 The figure is a test result diagram of the buckle disclosed in the present invention and the buckle of the prior art.

[0034] The reference numerals are as follows:

[0035] 100 Buckles

[0036] 1 First fastener

[0037] 11 body

[0038] 111 abutment surface

[0039] 112 Guide surface

[0040] 12. First storage space

[0041] 13 First through hole

[0042] 14 snap block

[0043] 2 Second fastener

[0044] 21 base

[0045] 211 contact surface

[0046] 212 Arc guide surface

[0047] 22 Extension

[0048] 221 Extension Column

[0049] 222 Connection

[0050] 2221 Incline

[0051] 223 Positioning column

[0052] 23 Second storage space

[0053] 24 Second through hole

[0054] 3 Third fastener

[0055] 31 base

[0056] 311 Blind hole

[0057] 32 Guide column

[0058] 33 Buckle

[0059] 34 Teeth

[0060] 35 Grooves

[0061] 4 Elastic parts

[0062] 5 First Rope Passage

[0063] 6 Second Rope Passage

[0064] 7,8 rope body

[0065] 91,92 curve

[0066] F1 First External Force

[0067] F2 Second external force

[0068] W1 First Width

[0069] W2 Second width

[0070] X1 First direction

[0071] X2 Second direction DETAILED DESCRIPTION

[0072] See also Figure 1 and Figure 2 In the first embodiment, the buckle 100 of the present disclosure includes a first buckle 1, a second buckle 2, a third buckle 3 and an elastic member 4. The first buckle 1 and the second buckle 2 can be assembled with each other, the third buckle 3 is arranged in the second buckle 2, and the elastic member 4 is arranged between the second buckle 2 and the third buckle 3. The structure of each component and the connection relationship between them will be described in detail below.

[0073] Please also see Figure 3 The first fastener 1 includes a main body 11, a first accommodating space 12, a first through hole 13 and two snap blocks 14. The main body 11 is roughly a hollow tapered structure, for example, a hollow cone whose cross section is roughly trapezoidal. One side of the main body 11 (for example, corresponding to the longer bottom side in the trapezoidal cross section) has two abutment surfaces 111 spaced from each other, and the inner side of the main body 11 has two opposite guide surfaces 112. The first accommodating space 12 is formed inside the main body 11. The first through hole 13 is formed through the other side of the main body 11 (for example, corresponding to the shorter bottom side in the trapezoidal cross section, that is, away from the two abutment surfaces 111) and connects to the first accommodating space 12. The two snap blocks 14 are respectively protruded from the inner side of the main body 11 and face the first accommodating space 12, and are respectively located between the two guide surfaces 112.

[0074] Please also refer to Figure 4 The second fastener 2 includes a seat body 21, an extension body 22, a second accommodating space 23 and a second through hole 24. The seat body 21 is roughly a hollow square plate, located on one side of the main body 11 and away from the first through hole 13 (that is, adjacent to the two abutting surfaces 111). The top of the seat body 21 has two contact surfaces 211 corresponding to the two abutting surfaces 111, and the two contact surfaces 211 are spaced apart from each other. The inner side of the seat body 21 also has two opposite arc guide surfaces 212, and each arc guide surface 212 has a curvature. The extension body 22 is accommodated in the first accommodating space 12, and has four extension columns 221, a connecting portion 222 and a positioning column 223. The four extension columns 221 extend outward from the top of the seat body 21 and are spaced apart from each other. The connecting portion 222 is connected to the ends of the four extension columns 221 and has an H-shaped cross-section. The connecting portion 222 has two inclined surfaces 2221, and the two inclined surfaces 2221 correspond to the two guiding surfaces 112. The positioning column 223 extends outward from the connecting portion 222 and faces the second through hole 24, so that the positioning column 223 and the connecting portion 222 have a roughly arrow-shaped cross section (such as Figure 6 The second accommodation space 23 is surrounded and defined by the base body 21 and the extension body 22 . The second through hole 24 is formed through the base body 21 and communicates with the second accommodation space 23 .

[0075] Please also read Figure 5 The third fastener 3 is disposed in the second accommodating space 23, and includes a base 31, two guide posts 32, two buckle parts 33, a plurality of teeth 34 and a plurality of grooves 35. A circular blind hole 311 is recessed in the bottom surface of the base 31, and the size of the base 31 is smaller than the second through hole 24 and can be inserted into the second through hole 24. The two guide posts 32 are respectively extended outward from the bottom surface of the base 31 and are spaced apart from each other, and are respectively located on opposite sides of the connecting portion 222. The two buckle parts 33 are respectively extended outward from the side surfaces of the two guide posts 32. The plurality of teeth 34 are respectively extended outward from the two opposite side surfaces of the base 31 and are spaced apart from each other. The plurality of grooves 35 are respectively surrounded and defined by the plurality of teeth 34.

[0076] In the present embodiment, seven teeth 34 are formed on two opposite sides of the base 31, and grooves 35 are defined between each tooth 34. For example, three teeth 34 are formed on the left side of one side of the base 31, and three teeth 34 are formed on the right side. One tooth 34 is formed between the three teeth 34 on the left and right sides. Two grooves 35 can be defined between each of the three teeth 34, and one groove 35 can be defined around the three teeth 34 on the left / right sides and the tooth 34 in the middle. The above description is based on seven teeth 34 as an example, but the present disclosure is not limited to this number. As long as the grooves 35 make the teeth 34 arranged in an array, for example, the teeth 34 are in the form of an array of 3 rows and 4 lines, and there are 2 rows and 3 lines of grooves 35. Furthermore, the cross section of the teeth 34 can be roughly triangular, and the tips of the teeth 34 can correspond to the arc guide surface 212 according to the curvature of the arc guide surface 212.

[0077] The elastic member 4 is disposed in the second accommodation space 23, one end of which is sleeved on the positioning column 223 and abuts against the connecting portion 222, and the other end is accommodated in the blind hole 311. In this embodiment, the elastic member 4 is a compression spring.

[0078] The following describes the operation of the buckle 100 disclosed in the present invention. The buckle 100 can be in a locked state ( Figure 7 and Figure 8 ), the first release state ( Fig. 9 and Fig.10 ) and the second release state ( Fig.11 and Fig.12 ) and can be used for the rope bodies 7 and 8 to pass through, wherein, Figure 7 , Fig. 9 and Fig.11 Refer to the following for a brief description: Figure 1 The schematic diagram of the cross section of different states formed by the position of the AA section line, and Figure 8 , Fig.10 and Fig.12 Refer to the following for a brief description: Figure 1 Schematic diagram of cross-sections in different states formed by the position of the BB section line.

[0079] See also Figure 6 The space defined by the tooth portion 34 and the two arc guide surfaces 212 and the space defined by the two inclined surfaces 2221 and the two guide surfaces 112 can respectively form a first rope threading channel 5 and a second rope threading channel 6. Figure 7 and Figure 8, the first rope passage 5 is for the rope body 7 to pass through, and the second rope passage 6 is for the rope body 8 to pass through. The rope bodies 7 and 8 are respectively clamped by the teeth 34 and the two arc guide surfaces 212, and the rope bodies 7 and 8 are also hooked by the sharp edges of the tips of the teeth 34, and cannot move in the first rope passage 5 and the second rope passage 6. At this time, the buckle 100 is in a locked state, and the elastic force provided by the elastic member 4 to the connecting portion 222 and the base 31 can allow the teeth 34 and the two arc guide surfaces 212 to clamp the rope bodies 7 and 8, so that the second fastener 2 and the third fastener 3 will not be separated from each other, and the base 31 can be correspondingly located in the second through hole 24 and adjacent to the seat body 21. In addition, the two buckle blocks 14 are also buckled in the two buckle portions 33, so that the first fastener 1 and the third fastener 3 will not be separated from each other.

[0080] In one embodiment, the rope bodies 7 and 8 can be three-strand cotton ropes, braided cotton ropes or ribbons, but are not limited thereto.

[0081] Please also see Fig. 9 and Fig.10 When the buckle 100 changes from the locking state to the first release state, a first external force F1 is applied to the first buckle 1, so that the first buckle 1 moves along the second direction X2, and the two abutting surfaces 111 contact the two contact surfaces 211 respectively and push the second buckle 2 to move in the second direction X2 at the same time, the two buckle blocks 14 are separated from the two buckle parts 33 respectively, the blind hole 311 and the connecting part 222 jointly compress the elastic member 4, and the teeth 34 are respectively away from the two arc guide surfaces 212. In other words, the base 31 is away from the seat 21 and is not correspondingly located in the second through hole 24, so that the space surrounded and defined by the teeth 34 and the two arc guide surfaces 212 becomes larger, and the rope bodies 7 and 8 are not clamped, so that the rope bodies 7 and 8 can move in the first rope threading channel 5 and the second rope threading channel 6.

[0082] When the first external force F1 is removed, the first fastener 1 can be moved in the first direction X1 by the rebound of the elastic member 4, and the second fastener 2 can also be moved in the first direction X1, and the base 31 is close to the seat 21, that is, the tooth portion 34 is close to the two arc guide surfaces 212 respectively, until the two buckle blocks 14 respectively contact the two buckle portions 33, at which time the buckle 100 will change from the first release state to the locking state. Since the space surrounded and defined by the tooth portion 34 and the two arc guide surfaces 212 becomes smaller, the rope bodies 7 and 8 can be clamped, so that the rope bodies 7 and 8 cannot move in the first rope threading channel 5 and the second rope threading channel 6.

[0083] See also Fig.11 and Fig.12When the buckle 100 changes from the locking state to the second release state, a second external force F2 is applied to the first buckle 1, so that the first buckle 1 moves along the first direction X1, and the two buckle blocks 14 contact the two buckle parts 33 respectively and pull the third buckle 3 to move in the first direction X1 at the same time. At this time, the two abutting surfaces 111 are separated from the two contact surfaces 211 respectively, and the two inclined surfaces 2221 are respectively away from the two guide surfaces 112. The blind hole 311 and the connecting part 222 jointly compress the elastic member 4, and the tooth portion 34 is respectively away from the two arc guide surfaces 212. In other words, the base 31 is away from the seat 21 and is not correspondingly located in the second through hole 24, so that the space surrounded and defined by the tooth portion 34 and the two arc guide surfaces 212 becomes larger, and the rope bodies 7 and 8 are not clamped. In addition, since the two inclined surfaces 2221 are also away from the two guide surfaces 112 respectively, the space surrounded and defined by the two inclined surfaces 2221 and the two guide surfaces 112 becomes larger. Therefore, the rope bodies 7 and 8 can move in the first rope threading channel 5 and the second rope threading channel 6. In this embodiment, since the two inclined surfaces 2221 are also respectively far away from the two guide surfaces 112 in the second release state, the friction force caused by the two inclined surfaces 2221 and the two guide surfaces 112 on the rope bodies 7 and 8 in the second release state is smaller than that in the first release state, and the rope bodies 7 and 8 can move more easily. In other words, the space of the first rope threading channel 5 and the second rope threading channel 6 in the second release state is larger than that in the first release state, so the clamping force on the rope bodies 7 and 8 in the second release state is smaller than that in the first release state.

[0084] When the second external force F2 is removed, the first fastener 1 can be moved in the second direction X2 by the rebound of the elastic member 4, and the third fastener 3 can also be moved in the second direction X2, and the base 31 is close to the seat body 21, that is, the tooth portion 34 is close to the two arc guide surfaces 212 respectively, and the two inclined surfaces 2221 are also close to the two guide surfaces 112 respectively, until the two abutting surfaces 111 are respectively in contact with the two contact surfaces 211, at which time the buckle 100 will change from the second release state to the locking state. Because the space surrounded and defined by the tooth portion 34 and the two arc guide surfaces 212 becomes smaller, the rope bodies 7 and 8 can be clamped, so that the rope bodies 7 and 8 cannot move in the first rope threading channel 5 and the second rope threading channel 6.

[0085] The buckle 100 disclosed in the present invention can be arranged on a shoe, and can be passed through the rope bodies 7 and 8 arranged on the shoe. The first direction X1 can be the direction in which the buckle 100 moves away from the tongue of the shoe, and the second direction X2 can be the direction in which the buckle 100 moves toward the tongue of the shoe. The user can adjust the position of the buckle 100 on the shoe to determine the tightness. There is a first width W1 between the first rope threading channel 5 and the second rope threading channel 6 located at the first through hole 13, and there is a second width W2 between the first rope threading channel 5 and the second rope threading channel 6 located at the second through hole 24. Since the first buckle 1 is a hollow tapered structure, the second width W2 is greater than the first width W1. This allows the rope bodies 7 and 8 to be parallel to each other after passing through the first through hole 13, effectively improving the appearance. However, the present disclosure is not limited to the above, and the buckle 100 disclosed in the present invention can also be applied to ropes around the openings of clothes.

[0086] See also Fig.13 The shoelace fixing force was tested by passing the buckle 100 of the present invention and the buckle with a linear engagement section in the prior art through a 6 mm flat shoelace at a test speed of 100 mm / min. Fig.13 It can be clearly seen that the fixing force of the curve 91 of the buckle 100 of the present invention is significantly greater than that of the curve 92 of the buckle of the prior art, which shows that the shoelace fixing force of the buckle 100 of the present invention is strong and stable.

[0087] In summary, the buckle disclosed in the present invention has multiple teeth on the third buckle so that the multiple teeth can hook the rope body, and the pressure area of ​​the rope body is not easily affected by the elastic force of the elastic member, thereby increasing the fixing force of the rope body and maintaining a stable retention force.

Claims

1. A buckle, characterized in that: include: The first fastener comprises a body, a first accommodating space and a first through hole, wherein the first accommodating space is formed inside the body, and the first through hole is formed through the body and communicates with the first accommodating space; A second fastener is assembled with the first fastener and comprises a seat, an extension, a second accommodation space and a second through hole, wherein the seat is located at one side of the main body and away from the first through hole, the extension is formed by extending outward from the seat, the second accommodation space is surrounded and defined by the seat and the extension, the second through hole is formed through the seat and communicates with the second accommodation space, wherein the seat has at least one arc guide surface, and the arc guide surface has a curvature; and The third fastener is disposed in the second accommodating space and comprises a base, a plurality of teeth and a plurality of grooves. The teeth are formed by extending outward from two opposite side surfaces of the base, and the grooves are respectively defined by the teeth.

2. The buckle according to claim 1, characterized in that: The tooth portion corresponds to the arc guide surface according to the curvature.

3. The buckle according to claim 1, characterized in that: The grooves arrange the teeth in an array.

4. The buckle according to claim 1, characterized in that: The main body, the seat, the extension body and the teeth respectively constitute a first rope threading channel and a second rope threading channel, and the first rope threading channel and the second rope threading channel are respectively used for a rope body to pass from the second through hole to the first through hole. The first rope threading channel and the second rope threading channel located at the first through hole have a first width, and the first rope threading channel and the second rope threading channel located at the second through hole have a second width, and the second width is greater than the first width.

5. The buckle according to claim 4, characterized in that: The buckle also includes an elastic member arranged in the second accommodating space. The bottom surface of the base is recessed with a blind hole. One end of the elastic member abuts against the extension body, and the other end of the elastic member is accommodated in the blind hole.

6. The buckle according to claim 5, characterized in that: The buckle can be transformed between a first release state, a second release state and a locked state. When in the first release state and the second release state, the extension body and the base jointly compress the elastic member and move the base away from the seat body, thereby the rope body can move in the first rope threading channel and the second rope threading channel. When in the locked state, the base is adjacent to the seat body, and the rope body is clamped by the teeth and the seat body and cannot move in the first rope threading channel and the second rope threading channel.

7. The buckle according to claim 6, characterized in that: The extension body has four extension columns, a connecting portion and a positioning column. The extension columns extend outward from the base body and are spaced apart from each other. The connecting portion is connected to the end of the extension column. The positioning column extends outward from the connecting portion and faces the second through hole. One end of the elastic member is sleeved on the positioning column and abuts against the connecting portion.

8. The buckle according to claim 7, characterized in that: The first fastener also includes two snap blocks, which are protruded from the main body and face the first accommodating space. The third fastener also includes two guide columns and two snap parts. The guide columns are respectively extended outward from the bottom surface of the base and are spaced apart from each other and are respectively located on opposite sides of the connecting part. The snap parts are respectively extended outward from the sides of the guide columns.

9. The buckle according to claim 8, characterized in that: The main body has two abutting surfaces, and the seat body has two contact surfaces, and the abutting surfaces correspond to the contact surfaces respectively.

10. The buckle according to claim 9, characterized in that: The connecting portion has two opposite inclined surfaces, and the main body has two opposite guiding surfaces, and the inclined surfaces correspond to the guiding surfaces respectively.

11. The buckle according to claim 10, characterized in that: When the fastener changes from the locked state to the second released state, the first fastener moves along the first direction, and the buckle blocks contact the buckle parts respectively and pull the third fastener at the same time. At this time, the abutment surfaces are separated from the contact surfaces respectively, the inclined surfaces are away from the guide surfaces respectively, the blind hole and the connecting part jointly compress the elastic part, and the teeth are away from the arc guide surfaces respectively.

12. The buckle according to claim 10, characterized in that: When the clip changes from the second release state to the locking state, the first fastener moves along the second direction and the elastic member rebounds, thereby making the teeth adjacent to the arc guide surface and the inclined surface adjacent to the guide surface until the abutment surfaces contact the contact surfaces respectively.

13. The buckle according to claim 10, characterized in that: When the fastener changes from the locked state to the first released state, the first fastener moves along the second direction, the buckle blocks are respectively separated from the buckle parts, and the first fastener contacts the contact surfaces with the abutment surfaces and pushes the second fastener at the same time. At this time, the blind hole and the connecting part jointly compress the elastic part, and the teeth are respectively away from the arc guide surfaces.

14. The buckle according to claim 10, characterized in that: When the clip is transformed from the first release state to the locking state, the first fastener moves in the first direction and the elastic member rebounds, thereby making the teeth respectively adjacent to the arc guide surface until the buckle blocks respectively contact the buckle parts.

15. The buckle according to claim 10, characterized in that: The first rope threading channel and the second rope threading channel are respectively formed by a space defined by the tooth portion and the arc guide surface and a space defined by the inclined surface and the guide surface.

16. The buckle according to claim 7, characterized in that: The connecting portion has an H-shaped cross section.

17. The buckle according to claim 5, characterized in that: The elastic member is a compression spring.

18. The buckle according to claim 1, characterized in that: The main body is a hollow tapered structure.

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