fastener

Abstract

The fastener includes double-sided fastener tapes (6), sliders (4), inserts (1), fixed pins (2), and movable pins (3). Elements (5) are provided on the fastener tapes (6) on either side, the sliders (4) are used to operate the elements (5) on both sides to engage or separate, the fixed pin (2) is provided on the fastener tape (6) on the first side, the inserts (1) are provided on the fastener tape (6) on the first side and can be fitted into the fixed pin (2), and the movable pin (3) is provided on the fastener tape (6) on the second side, and the movable pin (3) is inserted into the inserts (1) and engaged with the fixed pin (2), thereby enabling the elements (5) on both sides to engage after the slider (4) is pulled. A pawl portion is provided on the side of the movable pin (3) facing the fixed pin (2), and the pawl portion is provided with a pawl surface (31). The pawl surface (31) abuts against the first side element (5) when the movable pin (3) is not inserted in the predetermined position, and is used to prevent the slider (4) from going beyond the pawl portion. In addition, the pawl surface (31) and the movable pin (3) are connected via a transition surface (32), which prevents the first side element (5) from engaging with the movable pin (3).

Description

[Technical Field]

[0001] This application claims priority from a Chinese patent application for a utility model entitled "Fastener" filed with the China Patent Office on April 19, 2023, bearing application number 202320916685.9, the entire contents of which are incorporated herein by reference.

[0002] This application relates to the technical field of fasteners, and more particularly to fasteners. [Background technology]

[0003] Currently, existing fasteners on the market do not have a function to prevent mis-insertion. Referring to Figure 1, a prior art fastener includes an insertion portion 1, a fixed pin 2, and a movable pin 3, with the movable pin 3 having a recess 30. If the movable pin 3 is not fully inserted into the insertion portion 1 or is not inserted to the correct position, when the slider is pulled upward with force, the element can easily be inserted into the recess 30 of the movable pin due to the force. At the same time, the movable pin 3 can easily be inserted or inserted incorrectly between the elements, causing the elements of the fastener to become misaligned and interlocked. In this situation, the fastener is highly susceptible to rupture. Furthermore, because the movable pin 3 is strong and tends to be packed between the elements, the elements are easily deformed, causing the elements to distort. After one mis-insertion, the probability of mis-insertion increases significantly, significantly impacting the user's experience. Summary of the Invention [Problem to be solved by the invention]

[0004] Therefore, how to avoid the situation where conventional fasteners are highly susceptible to mis-insertion is a technical problem that those skilled in the art currently need to solve. [Means for solving the problem]

[0005] The present application aims to provide a fastener that has a function of preventing erroneous insertion, and that prevents elements from interlocking when the slider is pulled when the movable pin is not inserted in the specified position.

[0006] In order to achieve the above object, the present application provides a fastener, a double-sided fastener tape, the double-sided fastener tape having elements on either side of the fastener tape; a slider for manipulating the engagement or separation of the elements on both sides; a fixing pin provided on the first side fastener tape; an insertion portion provided on the first fastener tape and capable of being fitted onto the fixing pin; a movable pin provided on the second fastener tape, the movable pin being inserted into the insertion portion and engaged with the fixed pin to realize the engagement of the elements on both sides after the slider is pulled; A pawl portion is provided on the side of the movable pin facing the fixed pin, and the pawl portion is provided with a pawl surface. The pawl surface abuts against the first side element when the movable pin is not inserted in the specified position, thereby preventing the slider from going beyond the pawl portion. In addition, the pawl surface and the movable pin are connected via a transition surface, thereby preventing the first side element from engaging with the movable pin.

[0007] In some embodiments, the fixed pin has a boss on the side facing the movable pin, and the boss overlaps the pawl.

[0008] In some embodiments, the pawl is a pawl protrusion; a contact surface is further provided on the fixed pin on a side facing the movable pin, the contact surface being used to contact the pawl surface of the pawl protrusion when the movable pin is inserted into a predetermined position; The boss portion is provided with a first engagement surface, and the movable pin is provided with a second engagement surface, and the first engagement surface and the second engagement surface come into contact and engage with each other, thereby improving the smoothness when the movable pin is inserted into the insertion portion.

[0009] In some embodiments, the pawl portion is a pawl tilt rod, the movable pin further has first slots located on both sides of the pawl tilt rod, and the fixed pin further has second slots located between the two bosses, so that when the movable pin is inserted into position, the pawl tilt rod is engaged in the second slot, and the two bosses are respectively engaged in the two first slots.

[0010] In some embodiments, the movable pin further includes an arcuate surface on a side facing the fixed pin, the arcuate surface being coupled to the pawl surface.

[0011] In some embodiments, the movable pin has a cutting surface that contacts and engages with the sidewall of the slider to improve smoothness when the movable pin is inserted into the insert.

[0012] In some embodiments, the pawl has a hooking tooth at the top, which is used to hook the element.

[0013] In some embodiments, the top of the movable pin is provided with a receiving groove, which is used to receive the element.

[0014] In some embodiments, the pawl is integrally molded onto the movable pin.

[0015] In some embodiments, the insert is a box, and the box and the fixing pin are integrally formed; or The insertion portion and the slider are combined to form a double slider unit.

[0016] In contrast to the background art, the present application provides a fastener comprising two fastener tapes, a slider, an insert, a fixed pin, and a movable pin, wherein elements are provided on both fastener tapes, the slider is used to engage or separate the elements on both sides, the fixed pin is provided on the first fastener tape, the insert is provided on the first fastener tape and is engageable with the fixed pin, and the movable pin is provided on the second fastener tape, the movable pin is inserted into the insert and engages with the fixed pin to engage the elements on both sides after the slider is pulled. Furthermore, a pawl is provided on the movable pin on the side facing the fixed pin, and the pawl is provided with a pawl surface. The pawl surface abuts against the element on the first side when the movable pin is not inserted in a predetermined position, thereby preventing the slider from passing over the pawl, and the pawl surface and the movable pin are connected via a transition surface to prevent the element on the first side from engaging with the movable pin. Here, a fastener using the above-mentioned installation method has the function of preventing incorrect insertion. Specifically, when the movable pin is not inserted in the specified position, the slider will not go beyond the pawl, which prevents the element from engaging with the movable pin, and the pawl of the movable pin will not be incorrectly inserted or engaged between the elements. This prevents the elements of the fastener from shifting position and interlocking after the slider is pulled, preventing the zipper from bursting after incorrect insertion and improving the user experience of the fastener.

[0017] In order to clearly explain the technical solutions of the embodiments of the present application or the prior art, the following briefly introduces the drawings necessary for the description of the embodiments or the prior art. The drawings described below are only embodiments of the present application, and those skilled in the art may obtain other drawings based on the provided drawings on the premise that they do not perform any work worthy of inventive step. [Brief explanation of the drawings]

[0018] [Figure 1]FIG. 1 is an exploded view of a fastener structure according to the prior art. [Figure 2] 1 is a schematic diagram of the overall structure of a single zipper according to a first embodiment of the present application; [Figure 3] FIG. 3 is an exploded view of the single fastener shown in FIG. 2. [Figure 4] 4 is a structural schematic diagram of a movable pin in the single fastener shown in FIG. 3. [Figure 5] FIG. 5 is a schematic front view of the movable pin shown in FIG. [Figure 6] FIG. 5 is a schematic rear view of the movable pin shown in FIG. [Figure 7] FIG. 5 is a side view of the movable pin shown in FIG. [Figure 8] 4 is a schematic diagram of the structure of the fastening pin and the fitting portion of the single fastener shown in FIG. 3.

[0023] FIG. [Figure 9] 9 is a front view showing the attachment of the fixing pin and the inserting portion shown in FIG. 8. FIG. [Figure 10] 9 is a schematic rear view of the attachment of the fixing pin and the inserting portion shown in FIG. 8. FIG. [Figure 11] 9 is a side view of the attachment of the fixing pin and the inserting portion shown in FIG. 8. FIG. [Figure 12] 1 is a front view of a single fastener according to an embodiment of the present application after the slider has been pulled. [Figure 13] 1 is a schematic diagram of the back surface of a single fastener in an embodiment of the present application after the slider has been pulled. [Figure 14] 10 is a schematic diagram of the insertion process of the movable pin after the slider of the single zipper in the embodiment of the present application has reached a predetermined position. [Figure 15] 10 is a schematic diagram showing the slider being pulled up when the movable pin of the single fastener in the embodiment of the present application is not inserted into the predetermined position. FIG. [Figure 16] FIG. 2 is a schematic diagram of a movable pin of a single fastener according to a second embodiment of the present application. [Figure 17] FIG. 10 is a structural diagram illustrating the attachment of the fixing pin and the inserting portion of the single fastener in the second embodiment of the present application. [Figure 18] 10 is another schematic diagram of a single fastener according to an embodiment of the present application, in which the movable pin is engaged with the fixed pin and the inserting portion. FIG. [Figure 19] FIG. 10 is an exterior view of a double fastener in an embodiment of the present application in which the movable pin is not inserted into a predetermined position. [Figure 20] FIG. 10 is an inside view of a double zipper in an embodiment of the present application in which the movable pin is not inserted into a predetermined position. DETAILED DESCRIPTION OF THE INVENTION

[0019] The following clearly and completely describes the technical solutions of the embodiments of this application, combined with the drawings of the embodiments of this application, and the described embodiments are not all of the embodiments, but only some of the embodiments of this application. Based on the embodiments in this application, all other embodiments obtained by a person skilled in the art without any inventive effort fall within the scope of protection of this application.

[0020] In order to enable those skilled in the art to better understand the solution of the present application, the following will further describe the present application in detail in combination with drawings and specific embodiments.

[0021] Note that the positional terms such as "top end, bottom end, left side, right side" described below are all defined based on the drawings.

[0022] 2 and 3, the fastener provided in the embodiment of the present application includes an insert 1, a fixed pin 2, a movable pin 3, a slider 4, and two zipper tapes 6. Each zipper tape 6 is provided with an element 5. The slider 4 is used to control the engagement or separation of the elements 5 on both sides. The fixed pin 2 is provided on the first zipper tape 6. The insert 1 is provided on the first zipper tape 6 and can be engaged with the fixed pin 2. The movable pin 3 is provided on the second zipper tape 6. The movable pin 3 is inserted into the insert 1 and engages with the fixed pin 2, thereby enabling the elements 5 of the zipper tapes 6 to engage with each other after the slider 4 is pulled.

[0023] Furthermore, a pawl portion is provided on the side of the movable pin 3 facing the fixed pin 2, and the pawl portion is provided with a pawl surface 31. The pawl surface 31 is used to abut against the first side element 5 when the movable pin 3 is not inserted in a predetermined position, preventing the slider 4 from going beyond the pawl portion. Specifically, by increasing the width of the upper half structure of the movable pin 3, the width where the pawl portion abuts against the first side element 5 is made larger than the width inside the cavity of the slider 4. This prevents the slider 4 from being pulled upward when the movable pin 3 is not inserted in a predetermined position, preventing the occurrence of incorrect insertion. At the same time, the pawl surface 31 and the movable pin 3 have a transitional The transition surface 32 is connected to the first element 5 via a surface 32 to prevent the first element 5 from being engaged with the movable pin 3. Specifically, the transition surface 32 may be an arc surface with a certain curvature, or a plane that sequentially connects the pawl surface 31 with the inner surface of the lower half of the movable pin 3. Here, whether the transition surface 32 is an arc surface or a plane, it must be ensured that the transition surface 32 is non-concave. Compared with the prior art installation in which a concave structure 30 is adopted at this position, the installation of the present application adopting a non-concave transition surface 32 prevents the first element 5 from being engaged with the movable pin 3 due to the action of force, thereby preventing the occurrence of incorrect insertion or rupture due to the engagement of the element 5.

[0024] Here, a fastener using the above-mentioned installation method has the function of preventing incorrect insertion. Specifically, when the movable pin 3 is not inserted in the specified position, the slider 4 will not go beyond the latch, which prevents the first element 5 from engaging with the movable pin 3, and the latch of the movable pin 3 will not be incorrectly inserted or locked between the first elements 5. This prevents the fastener element 5 approaching the bottom latch end after the slider 4 is pulled from shifting position and engaging, preventing the fastener from bursting after incorrect insertion and improving the user experience of the fastener.

[0025] 4 to 15, in order to ensure that the fastener has a certain anti-jumping function when the fastener is in an engaged state, a boss portion 21 is provided on the side of the fixed pin 2 facing the movable pin 3, and the boss portion 21 overlaps with the pawl portion.

[0026] Here, the so-called overlapping means that after the movable pin 3 is fully inserted into the insertion portion 1, the pawl portion of the movable pin 3 and the boss portion 21 of the fixed pin 2 at least partially overlap and have overlapping portions, which provides a certain degree of prevention of popping out when the fastener is in an engaged state.

[0027] In some embodiments, referring also to Figures 4 to 13, the pawl portion is a pawl protrusion 311, that is, the pawl portion is a protrusion structure in which the side facing the fixed pin 2 protrudes, and an adhesion surface 22 is provided on the side of the fixed pin 2 facing the movable pin 3, and when the movable pin 3 is inserted into a predetermined position, the adhesion surface 22 comes into close contact with the pawl surface 31 of the pawl protrusion 311, and at the same time, a first engagement surface 211 is provided on the boss portion 21, and a second engagement surface 3111 is provided on the movable pin 3, and the first engagement surface 211 and the second engagement surface 3111 come into contact and engage with each other, thereby improving the smoothness of insertion of the movable pin 3 into the insertion portion 1.

[0028] The first engagement surface 211 and the second engagement surface 3111 include any structure that is advantageous for improving the smoothness of insertion of the movable pin 3 into the insertion portion 1, such as, but not limited to, an arcuate surface or a slope. Preferably, the first engagement surface 211 is a protruding arcuate surface, and the second engagement surface 3111 may accordingly have a certain degree of arc. Here, the second engagement surface 3111 may be an engagement surface formed by cutting or cutting out one side of the pawl portion, that is, on the movable pin 3, the pawl portion can be considered to have an outwardly protruding structure, and the second engagement surface 3111 may be an inwardly recessed engagement surface, and the second engagement surface 3111 has a certain degree of arc, in which case the contact engagement between the second engagement surface 3111 and the first engagement surface 211 during insertion of the insert pin improves the smoothness of insertion of the insert pin.

[0029] Here, in the thickness direction of the movable pin 3, the sum of the dimension of the second engagement surface 3111 and the dimension of the pawl surface 31 is equal to the thickness dimension of the movable pin 3.

[0030] Furthermore, the contact surface 22 may be a contact surface 22 formed by cutting or cutting out one side of the boss portion 21, that is, in the fixed pin 2, the boss portion 21 can be regarded as an outwardly protruding structure, and the contact surface 22 may be an inwardly concave contact surface 22, or the contact surface 22 may be a curved or arcuate surface, and the structure of the contact surface 22 is fitted into the structure of the latch surface 31, so that after the movable pin 3 is inserted into a predetermined position, the latch surface 31 can be tightly attached to the contact surface 22.

[0031] Here, in the thickness direction of the fixing pin 2 , the sum of the dimension of the contact surface 22 and the dimension of the boss portion 21 is equal to the thickness dimension of the fixing pin 2 .

[0032] Referring also to Figure 14, when the slider 4 is pulled to a predetermined position, during the insertion process of the movable pin 3, the front end portion of the fixed pin 2 (i.e., the first engagement surface 211) engages with the second engagement surface 3111 of the movable pin 3, and since the total width of the movable pin 3 and the first side element 5 is within the width range of the inner cavity of the slider 4, the movable pin 3 can be inserted and removed normally and smoothly.

[0033] Referring also to Figure 15, when the movable pin 3 is not fully inserted into the predetermined position, the slider 4 is pulled upward, reducing the width of the cavity of the slider 4. In this case, the movable pin 3 and the first element 5 are pressed by the slider 4, but the combined width of the two is still greater than the width of the cavity of the slider 4 that they come into contact with at this time, preventing the slider 4 from being pulled up. At the same time, the upper pawl of the movable pin 3 and the movable pin 3 are connected as a whole arc. Even when pressed by force, the first element 5 will not engage into the movable pin 3, and the pawl of the movable pin 3 will not engage between the first element 5. This ensures that the slider 4 will not be pulled up when the movable pin 3 is not inserted into the predetermined position.

[0034] 16 and 17, in some embodiments, the pawl portion may be a pawl tilt rod 312, and the movable pin 3 further has first slots 3121 located on both sides of the pawl tilt rod 312, and the fixed pin 2 further has a second slot 23 located between the two bosses 21. When the movable pin 3 is inserted into a predetermined position, the pawl tilt rod 312 is engaged in the second slot 23, and the two bosses 21 are respectively engaged in the two first slots 3121.

[0035] That is, when the movable pin 3 is not inserted into the predetermined position, the ratchet tilt rod 312 comes into contact with the first element 5, thereby preventing the slider 4 from passing over the ratchet tilt rod 312, and providing a certain degree of prevention of incorrect insertion. At the same time, the fixed pin 2 is provided with two protruding structures (i.e., bosses 21), and the open structure between the two bosses 21 is the second slot 23, which is for engaging with the ratchet tilt rod 312 of the movable pin 3, and the first slots 3121 are for engaging with the bosses 21 respectively.

[0036] Here, when the movable pin 3 is not inserted into the specified position, the slider 4 is pulled upward, and the two boss portions 21 on the fixed pin 2 also abut against the lower half of the movable pin 3, which, together with the abutting effect of the latch inclined rod 312 against the first side element 5, jointly generate a certain resistance force against the upward pulling of the slider 4, so that the slider 4 cannot be pulled upward, thereby achieving the purpose of preventing incorrect insertion.

[0037] In some embodiments, the movable pin 3 further comprises an arcuate surface 33 on the side facing the fixed pin 2 , the arcuate surface 33 being connected to the pawl surface 31 .

[0038] The arc-shaped surface 33 is the inner arc-shaped edge of the movable pin 3, and the entire inner surface of the movable pin 3 includes an upper inner surface and a lower inner surface, with the arc-shaped surface 33 being the lower inner surface and the pawl surface 31 being part of the upper inner surface (in the first embodiment, the pawl surface 31 and the second engagement surface 3111 are combined together to form the upper inner surface, and in the second embodiment, the pawl surface 31 is located at the middle position of the entire upper inner surface). Furthermore, the purpose of making the arc-shaped surface 33 arc-shaped is to allow it to come into contact with and slide against the fixed pin 2 or the element 5 when the movable pin 3 is inserted or removed, and it has a certain transition effect to improve the smoothness of insertion and removal.

[0039] In some embodiments, the movable pin 3 is provided with a cutting surface 34, which contacts and engages with the side wall of the slider 4 to improve the smoothness of insertion of the movable pin 3 into the insertion portion 1. The cutting surface 34 may be a sloped or arced surface, and the curvature left in the cutting surface 34 better matches the curvature of the side wall of the slider 4 when the movable pin 3 is inserted, thereby improving the smoothness of insertion and removal of the movable pin 3.

[0040] In some embodiments, for nylon zippers, the top of the pawl is provided with a hooking tooth 35, which is used to hook the first element 5.

[0041] At the same time, a receiving groove 36 is provided at the top of the movable pin 3, and the receiving groove 36 is used to receive the element 5. After the movable pin 3 is fully inserted into the insertion portion 1, the first element 5 on the same side as the fixed pin 2 can be just fitted into the receiving groove 36.

[0042] In some embodiments, referring also to FIG. 18, for the bottom stop of a metal zipper, the first tooth does not need to be hooked, but is limited in position by the step of the movable pin 3. Therefore, compared to a nylon zipper, by removing the hooking tooth portion 35 located at the top of the stop portion of the movable pin 3, a step terrace 37 is formed at the top of the movable pin 3, providing space for arranging the first tooth 5.

[0043] In some embodiments, the pawl is integrally molded onto the movable pin 3, which may be integrally formed by injection molding.

[0044] It is understood that the pawl portion is a structure that blocks the element 5 when the movable pin 3 is inserted into the insertion portion 1, and in this application, the length of the pawl portion is increased and connected to the body of the movable pin 3 to form an overall structure, the purpose of which is to pull the slider 4 upward when the movable pin 3 is not inserted in the specified position, so that the element 5 will not engage into the movable pin 3 due to the pressing force of the slider 4, thereby blocking the entry of the element 5, and at the same time, the total width of the pawl portion and the element 5 is greater than the width of the lower end inner cavity of the slider 4, making it difficult for the slider 4 to slip out and engage upward, thereby avoiding incorrect insertion.

[0045] As shown in Figures 1 to 18, the insertion portion 1 in the embodiments of the present application may have a box structure, i.e., the fastener is a single fastener, and of course, as shown in Figures 19 and 20, the insertion portion 1 may have a slider structure, i.e., the fastener is a double fastener.

[0046] When the insert 1 is a box, the fixing pin 2 and the box have an integrally molded structure, for example, they are integrally molded by injection molding. Referring to Figures 19 and 20, when the insert 1 has a slider structure, the insert 1 and the slider 4 are combined to form a double slider unit. For the installation of the double zipper, reference can be made to the contents of the prior art, and no further details will be provided here.

[0047] When the insertion part 1 is a box, the present application further shortens the length of the box, and the effect is to shorten the insertion stroke of the movable pin 3 inside the box. When the insertion space is shortened, the insertion stroke of the movable pin 3 is also shortened. At the same time, due to the series of smoothness improving effects designed previously, the probability that the movable pin 3 will not be inserted into the designated position inside the box is further reduced.

[0048] As mentioned above, the structure of the conventional movable pin 3 leaves a large gap or step at the protruding part where it hooks the element 5, and when force is applied, the element 5 is easily forced to leave a gap for insertion, and the conventional pawl is also engaged between the elements 5, so that the combined width of the two is smaller than the width of the lumen of the slider 4, causing incorrect insertion and subsequent engagement, resulting in bursting. Based on this, the present application uses an innovative structural design to give the fastener an anti-misinsertion function, i.e., to avoid the situation where the slider 4 cannot be pulled upward when force is applied when the movable pin 3 is not fully inserted into the inserting portion 1 or not inserted to the specified position, and the slider 4 comes out and engages the element 5 upward when the movable pin 3 is not inserted to the specified position. Furthermore, by improving the fine structural parts of the movable pin 3 and fixed pin 2 of the zipper, the guide function for inserting the movable pin 3 is increased, the smoothness of insertion of the movable pin 3 is improved, and the movable pin 3 is more easily inserted into the insertion portion 1 and into the specified position, improving the user experience of the zipper in many ways.

[0049] The fasteners provided by this application may be single fasteners or double fasteners.

[0050] It should be noted that in this specification, relational terms such as "first" and "second" are used merely to distinguish one entity from other entities and do not necessarily require or imply any such actual relationship or order between those entities.

[0051] The above is a detailed introduction to the fastener provided by this application. Specific examples are used in this specification to explain the principles and embodiments of this application, and the description of the above examples is merely used to understand the solution and gist of this application. Those skilled in the art may make some improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the scope of protection of the claims of this application. [Explanation of symbols]

[0052] 1. Insertion part 2 Fixing pin 21 Boss part 211...1st engagement surface 22 Contact surface 23 Second slot 3. Movable pin 30...concave structure 31 Pawl surface 311 Pawl protrusion 3111...Second engagement surface 312 Pawl tilt rod 3121 First slot 32 Transition Surface 33...Arc-shaped surface 34...cutting surface 35 Hooking teeth 36 Storage groove 37 Step Terrace 4 Slider 5 Elements 6. Zipper tape

Claims

1. a double-sided fastener tape, the double-sided fastener tape having elements on either side of the fastener tape; a slider for manipulating the engagement or separation of the elements on both sides; a fixing pin provided on the fastener tape on the first side; a fitting portion provided on the fastener tape on the first side and capable of fitting onto the fixing pin; a movable pin provided on the fastener tape on the second side, the movable pin being inserted into the insertion portion and engaged with the fixed pin to realize the elements on both sides being engaged with each other after the slider is pulled, A pawl portion is provided on the side of the movable pin facing the fixed pin, and a pawl surface is provided on the pawl portion. The pawl surface abuts against the element on the first side when the movable pin is not inserted in a predetermined position, thereby preventing the slider from going beyond the pawl portion. In addition, the pawl surface and the movable pin are connected via a transition surface, thereby preventing the element on the first side from engaging with the movable pin. A fastener characterized by:

2. a boss portion is provided on a side of the fixed pin facing the movable pin, and the boss portion overlaps with the pawl portion; 2. The fastener according to claim 1.

3. the pawl portion is a pawl protrusion, a contact surface is further provided on the fixed pin on a side facing the movable pin, the contact surface being used to contact the pawl surface of the pawl protrusion when the movable pin is inserted into a predetermined position; The boss portion is provided with a first engagement surface, and the movable pin is provided with a second engagement surface, and the first engagement surface and the second engagement surface come into contact and engage with each other, thereby improving smoothness when the movable pin is inserted into the insertion portion.

3. The fastener according to claim 2.

4. the pawl portion is a pawl tilt rod, the movable pin further has first slots located on both sides of the pawl tilt rod, and the fixed pin further has second slots located between the two boss portions, and when the movable pin is inserted into a predetermined position, the pawl tilt rod is engaged with the second slot, and the two boss portions are respectively engaged with the two first slots; 3. The fastener according to claim 2.

5. The movable pin further has an arcuate surface on a side facing the fixed pin, the arcuate surface being connected to the pawl surface. The fastener according to any one of claims 1 to 4.

6. The movable pin has a cutting surface, which contacts and engages with a side wall of the slider, thereby improving smoothness when the movable pin is inserted into the insertion portion. The fastener according to any one of claims 1 to 4.

7. A hook tooth portion is provided at the top of the pawl portion, and the hook tooth portion is used to hook the element. The fastener according to any one of claims 1 to 4.

8. A receiving groove is provided at the top of the movable pin, and the receiving groove is used to receive the element. The fastener according to any one of claims 1 to 4.

9. The pawl portion is integrally formed with the movable pin. The fastener according to any one of claims 1 to 4.

10. The insertion portion is a box, and the box and the fixing pin are integrally molded, or The insertion portion and the slider are combined to form a double slider unit. The fastener according to any one of claims 1 to 4.

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