A zipper

Abstract

The utility model relates to zip fastener structure technical field especially relates to a zip fastener, include: the first chain belt and the second chain belt of opposite setting, first chain tooth row and second chain tooth row are arranged respectively on the first chain belt and the second chain belt of opposite setting, make the first chain tooth row and the second chain tooth row occlusion or separate puller, still include: the first upper stop piece is located the first chain tooth row's upper end and is arranged on the first chain belt, the second upper stop piece is located the second chain tooth row's upper end and is arranged on the second chain belt, the first upper stop piece and the second upper stop piece prevent puller from the upper end of first chain tooth row and second chain tooth row and come off when making the first chain tooth row and the second chain tooth row occlusion, the first upper stop piece can make puller come off or install the upper end of first chain tooth row, and the second chain tooth row is equipped with the come-off piece that can make puller come off or install the second chain tooth row, can realize the puller of lower stop piece closed state and dismantle and install.

Description

Technical Field

[0001] This utility model relates to the field of zipper structure technology, and in particular to a zipper. Background Technology

[0002] Typically, zipper pulls have stops at both ends of the chain teeth to prevent the zipper pull from detaching from either end of the chain teeth. Depending on the application, zippers used in clothing often have an openable stop at the bottom of the chain teeth to allow separation of the two chain teeth; zippers used in bags and pockets typically have a closed stop at the bottom of the chain teeth. Zipper pulls require recycling and replacement. Existing technology includes designs for zipper products with openable stop mechanisms that allow the zipper pull to detach from the chain teeth, as seen in patent documents GB2327978A and US5860193A. However, these designs require the stop to be open and the two chain teeth to be separated before the zipper pull can detach from one side of the chain teeth. This is not applicable to zipper products with closed stop mechanisms. For zipper products where the lower stop remains closed, there is currently a lack of solutions that allow for the removal and installation of the zipper pull from the zipper teeth. Utility Model Content

[0003] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a zipper that can detach and install the zipper head from the zipper teeth while the lower stop is closed.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] This utility model provides a zipper, comprising: a first chain belt and a second chain belt disposed opposite to each other; a first chain tooth row and a second chain tooth row disposed opposite to each other and respectively disposed on the first chain belt and the second chain belt; a zipper pull for engaging or disengaging the first chain tooth row and the second chain tooth row; further comprising: a first upper stop member disposed on the first chain belt and located at the upper end of the first chain tooth row; a second upper stop member disposed on the second chain belt and located at the upper end of the second chain tooth row; the first upper stop member and the second upper stop member prevent the zipper pull from disengaging from the upper ends of the first chain tooth row and the second chain tooth row when the first chain tooth row and the second chain tooth row are engaged; the first upper stop member allows the zipper pull to disengage or be inserted into the upper end of the first chain tooth row, and the second chain tooth row is provided with a disengagement member for disengaging or inserting the zipper pull into the second chain tooth row.

[0006] Preferably, the ejector includes a base and a first ejector portion connected to the upper end face of the base, wherein the thickness of the first ejector portion is reduced relative to the thickness of the base to a thickness that allows the pull head to deflect through.

[0007] Preferably, the first upper stop includes a stop portion and a second disengaged portion connected to the upper end surface of the stop portion, wherein the thickness of the second disengaged portion is reduced relative to the thickness of the stop portion to a thickness that allows the pull head to deflect through.

[0008] Preferably, the side of the upper end face of the stop portion away from the second chain is a first inclined surface that extends obliquely from bottom to top toward the second chain.

[0009] Preferably, the ejector is located at the lower part of the second chain tooth row.

[0010] Preferably, the ejector is located between the teeth of the second chain tooth row or at the bottom of the second chain tooth row.

[0011] Preferably, the ejector occupies the positions of two adjacent teeth in the second chain tooth row and can engage with the teeth in the corresponding first chain tooth row.

[0012] Preferably, the lower end face of the first tooth of the second chain row adjacent to the first disengaged portion, away from the first chain row, is a second inclined surface extending from top to bottom toward the first chain row.

[0013] Preferably, the upper end face of the base away from the first chain tooth row is a third inclined surface that extends obliquely from bottom to top toward the first chain tooth row.

[0014] Preferably, the ejector can engage with the second and third chain teeth of the corresponding first chain tooth row through the first ejection part. The back side of the second chain tooth is recessed towards the front side to form a first notch for the lower part of the first ejector to be inserted, and the front side of the lower part of the third chain tooth is recessed towards the back side to form a second notch for the upper part of the first ejector to be inserted.

[0015] Preferably, it further includes a lower stop, which is disposed on the first chain belt and the second chain belt and located at the lower end of the first chain tooth row and the second chain tooth row. The lower stop prevents the pull head from disengaging from the lower end of the first chain tooth row and the second chain tooth row when the first chain tooth row and the second chain tooth row are separated.

[0016] Preferably, the lower stop includes a first lower stop and a second lower stop that can be engaged or disengaged, the first lower stop and the second lower stop being respectively disposed on the first chain belt and the second chain belt and respectively located at the lower end of the first chain tooth row and the second chain tooth row.

[0017] Compared with the prior art, this utility model has significant progress:

[0018] The zipper of this utility model allows the zipper head to be disassembled or installed at the upper end of the first chain tooth row via a first upper stop member at the upper end of the first chain tooth row. At the same time, a disassembly member is provided on the second chain tooth row for the zipper head to be disassembled or installed in the second chain tooth row. This enables the zipper head to be disassembled and installed while the lower stop member is in a closed state, which facilitates the recycling, reuse, disassembly and replacement of the zipper head when the lower stop member is closed. Attached Figure Description

[0019] Figure 1 This is a perspective view of the zipper according to an embodiment of the present utility model.

[0020] Figure 2 This is a front view of the zipper according to an embodiment of the present invention.

[0021] Figure 3 This is a top view of the zipper according to an embodiment of the present invention.

[0022] Figures 4 to 6 This is a diagram illustrating the disassembly process of the zipper pull in an embodiment of this utility model.

[0023] Figure 7 This is a perspective view of the lower part of the second chain strap in the zipper of this utility model embodiment.

[0024] Figure 8 yes Figure 7 Front side view.

[0025] Figure 9 yes Figure 7 Rear side view.

[0026] Figure 10 This is a perspective view of the lower part of the first chain strap in the zipper of this utility model embodiment.

[0027] Figure 11 yes Figure 10 Front side view.

[0028] Figure 12 yes Figure 10 Rear side view.

[0029] The reference numerals in the attached figures are explained as follows:

[0030] 1a. First chain belt; 1b. Second chain belt; 2a. First chain tooth row; 2b. Second chain tooth row; 3. Pull head; 31. Center post; 32. Side plate; 4. Lower stop; 41. First lower stop; 42. Second lower stop; 43. Buckle groove; 44. Buckle hook; 5. First upper stop; 51. Stop part; 52. Second disengaged part; 53. First inclined surface; 6. Second upper stop; 7. Disengaged part; 71. Base; 72. First disengaged part; 73. Third inclined surface; 81. First chain tooth; 811. Second inclined surface; 82. Second chain tooth; 821. First notch; 83. Third chain tooth; 831. Second notch. Detailed Implementation

[0031] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. These embodiments are only used to illustrate this utility model and are not intended to limit it.

[0032] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0035] Figures 1 to 12 An embodiment of the zipper provided by this utility model is shown. In the description of this utility model, for the zipper, the upper side refers to... Figure 2 The top and bottom sides of the paper refer to Figure 2 The bottom side of the paper, the vertical direction of the zipper is also called the length direction; the left side refers to... Figure 2 The left and right sides of the paper refer to Figure 2The right side of the paper, and the left and right directions of the zipper, are also called the width direction; the front side refers to... Figure 2 The outer side of the paper, the back side refers to... Figure 2 The inside of the paper surface, the front and back direction of the zipper, is also called the thickness direction.

[0036] like Figures 1 to 3 As shown, the zipper in this embodiment includes: a first chain belt 1a, a second chain belt 1b, a first chain tooth row 2a, a second chain tooth row 2b, a zipper pull 3, a lower stop 4, a first upper stop 5, and a second upper stop 6.

[0037] The first chain belt 1a and the second chain belt 1b are arranged opposite each other from left to right, and both the first chain belt 1a and the second chain belt 1b are fabric belts. The first chain tooth row 2a and the second chain tooth row 2b are respectively provided on the opposite side edges of the first chain belt 1a and the second chain belt 1b. The first chain tooth row 2a and the second chain tooth row 2b are also arranged opposite each other from left to right, and each of the first chain tooth row 2a and the second chain tooth row 2b includes a plurality of chain teeth arranged in a row along the vertical direction. The zipper head 3 engages or disengages the first chain teeth 2a and the second chain teeth 2b. The zipper head 3 is movably mounted on the first chain teeth 2a and the second chain teeth 2b. The interior of the zipper head 3 is provided with a central post 31 that separates the first chain teeth 2a and the second chain teeth 2b. Y-shaped guide grooves for accommodating the first chain teeth 2a and the second chain teeth 2b are formed on the left and right sides of the central post 31. Side plates 32 are provided on the left and right sides of the zipper head 3 to regulate the movement of the first chain teeth 2a and the second chain teeth 2b. A gap is provided in the middle of the side plates 32 to accommodate the fabric tape. By moving the zipper head 3 up and down, the first chain teeth 2a and the second chain teeth 2b engage or disengage.

[0038] The lower stop 4 is disposed on the first chain belt 1a and the second chain belt 1b and located at the lower end of the first chain teeth 2a and the second chain teeth 2b. The lower stop 4 prevents the zipper pull 3 from disengaging from the lower end of the first chain teeth 2a and the second chain teeth 2b when it moves downward and separates. When the zipper is used in applications such as bags and pockets, the lower stop 4 remains closed. When the zipper pull 3 moves downward and separates the first chain teeth 2a and the second chain teeth 2b, the zipper pull 3 moves down until the central post 31 of the zipper pull 3 contacts the closed lower stop 4. The central post 31 is blocked by the closed lower stop 4 and cannot move further downward, thereby preventing the zipper pull 3 from disengaging from the lower end of the first chain teeth 2a and the second chain teeth 2b. Preferably, the lower stop 4 includes a first lower stop 41 and a second lower stop 42 that can be engaged or disengaged. The first lower stop 41 is disposed on the first chain belt 1a and located at the lower end of the first chain tooth row 2a, and the second lower stop 42 is disposed on the second chain belt 1b and located at the lower end of the second chain tooth row 2b. When the first lower stop 41 and the second lower stop 42 are engaged, the lower stop 4 remains in a closed state. The first lower stop 41 and the second lower stop 42 are designed to be disengaged, which facilitates the separate manufacturing of the first chain belt 1a and the second chain belt 1b, thereby facilitating the manufacturing and forming of the first chain tooth row 2a and the second chain tooth row 2b on the first chain belt 1a and the second chain belt 1b respectively. The engaging or disengaging structure of the first lower stop 41 and the second lower stop 42 is not limited. Preferably, interlocking grooves 43 and hooks 44 can be provided on the facing sides of the first lower stop 41 and the second lower stop 42 respectively.

[0039] The first upper stop 5 is disposed on the first chain belt 1a and located at the upper end of the first chain tooth row 2a, and the second upper stop 6 is disposed on the second chain belt 1b and located at the upper end of the second chain tooth row 2b. The first upper stop 5 and the second upper stop 6 prevent the pull head 3 from disengaging from the upper end of the second chain tooth row 2b when the first chain tooth row 2a and the second chain tooth row 2b are engaged. When the zipper 3 moves upward to engage the first chain teeth 2a and the second chain teeth 2b, the zipper 3 moves upward to the first upper stop 5 and the second upper stop 6. The first upper stop 5 and the second upper stop 6 enter the Y-shaped guide groove from the left and right sides of the upper part of the Y-shaped guide groove of the zipper 3, respectively. Under the constraint of the zipper 3, they move downward towards the lower part of the Y-shaped guide groove while approaching each other. The lower channel of the Y-shaped guide groove of the zipper 3 is relatively narrow, which does not allow the first upper stop 5 and the second upper stop 6, which are close to each other, to pass through at the same time. Thus, the first upper stop 5 and the second upper stop 6 prevent the zipper 3 from coming off from the upper end of the first chain teeth 2a and the second chain teeth 2b.

[0040] The first upper stop 5 can cause the slider 3 to disengage or be inserted into the upper end of the first chain tooth row 2a, that is, the first upper stop 5 can pass through the Y-shaped guide groove of the slider 3 alone.

[0041] In this embodiment, as Figure 1 and Figure 2As shown, the second chain tooth 2b is provided with a release member 7, which allows the pull head 3 to be released or inserted into the second chain tooth 2b.

[0042] In this embodiment, when the lower stop 4 is in the closed state, if it is necessary to remove the zipper pull 3, such as... Figure 4 , Figure 5 and Figure 6 As shown, the slider 3 is first disengaged from the second chain tooth 2b by the disengagement member 7 on the second chain tooth 2b, thus separating the slider 3 from the second chain tooth 2b and allowing the slider 3 to remain on the first chain tooth 2a. Then, the slider 3 is disengaged from the upper end of the first chain tooth 2a by the first upper stop member 5, thus separating the slider 3 from the first chain tooth 2a, thereby completing the disassembly of the slider 3. When it is necessary to install the slider 3, the disassembly of the slider 3 is reversed. First, the slider 3 is inserted from the upper end of the first chain tooth 2a by the first upper stop member 5, thus installing the slider 3 into the first chain tooth 2a. Then, the slider 3 is inserted into the second chain tooth 2b by the disengagement member 7 on the second chain tooth 2b, thus installing the slider 3 into the second chain tooth 2b, thereby completing the installation of the slider 3. Therefore, the zipper in this embodiment enables the disassembly and installation of the zipper head 3 while the lower stop 4 remains closed, which facilitates the recycling, reuse, disassembly, and replacement of the zipper head 3 when the lower stop 4 is closed.

[0043] like Figure 7 , Figure 8 and Figure 9 As shown, in this embodiment, preferably, the ejector 7 includes a base 71 and a first ejector portion 72. The first ejector portion 72 is located at the upper end of the base 71 and is connected to the upper end surface of the base 71. The thickness of the first ejector portion 72 is reduced relative to the thickness of the base 71 to a thickness that allows the slider 3 to deflect and pass through. That is, the thickness of the first ejector portion 72 is smaller than the gap size in the middle of the side plate 32 of the slider 3, allowing the side plate 32 of the slider 3 to be introduced. A space is formed between the base 71 and the first chain tooth 81 adjacent to the first ejector portion 72, allowing the side plate 32 of the slider 3 to pass through. The side plate 32 of the slider 3 can deflect and pass through this space to eject or insert into the second chain tooth row 2b.

[0044] like Figure 1 and Figure 2As shown, in this embodiment, preferably, the first upper stop 5 includes a stop portion 51 and a second disengagement portion 52. The second disengagement portion 52 is connected to the upper end surface of the stop portion 51. The thickness of the second disengagement portion 52 is reduced relative to the thickness of the stop portion 51 to a thickness that allows the slider 3 to deflect and pass through. That is, the thickness of the second disengagement portion 52 is smaller than the gap size in the middle of the side plate 32 of the slider 3, meaning that the second disengagement portion 52 can pass through the gap in the middle of the side plate 32 of the slider 3. Thus, a space is formed above the stop portion 51 for the side plate 32 of the slider 3 to pass through. The side plate 32 of the slider 3 can deflect and pass through this space to disengage or be inserted into the upper end of the first chain tooth row 2a. When the zipper is installed on clothing or bags, the part of the first chain strap 1a located at the upper end of the first upper stop 5 is sewn to the fabric, so that the upper end of the first upper stop 5 is blocked by the fabric and cannot allow the zipper head 3 to pass through. Without disassembling the zipper, by deflecting the zipper head 3, the side plate 32 of the zipper head 3 is introduced into the second disengagement part 52 of the first upper stop 5. The side plate 32 of the zipper head 3 can move along the second disengagement part 52, so that the zipper head 3 can be disengaged through the second disengagement part 52 or inserted into the upper end of the first chain tooth row 2a.

[0045] Preferably, the upper end face of the stop portion 51 away from the second chain belt 1b (left side) is a first inclined surface 53 extending from bottom to top towards the second chain belt 1b (to the right side). The first inclined surface 53 can guide the deflection of the pull head 3 and the introduction of the side plate 32 into the second disengagement portion 52.

[0046] When disassembling the slider 3 using the first upper stop 5 in this embodiment, the slider 3, which has already separated from the second chain tooth 2b and is resting on the first chain tooth 2a, is moved upwards to the upper end of the first chain tooth 2a. At the first upper stop 5, the slider 3 is deflected to the right relative to the first chain 1a. The upper end of the left side plate 32 of the slider 3 is introduced into the second disengagement part 52 through the first inclined surface 53, and the left side plate 32 of the slider 3 continues to deflect to the right along the second disengagement part 52 until the lower end of the left side plate 32 of the slider 3 disengages from the second disengagement part 52. The slider 3 then disengages from the first upper stop 5 and disengages from the upper end of the first chain tooth 2a. The reverse operation completes the insertion of the slider 3 into the upper end of the first chain tooth 2a.

[0047] like Figure 1 and Figure 2 As shown, in this embodiment, preferably, the ejector 7 occupies the positions of two adjacent chain teeth of the second chain tooth row 2b and can engage with the chain teeth of the corresponding first chain tooth row 2a. Thus, the ejector 7 also constitutes part of the second chain tooth row 2b. Its engagement with the chain teeth corresponding to the first chain tooth row 2a can ensure the integrity of the engagement state of the first chain tooth row 2a and the second chain tooth row 2b, and will not produce a gap area.

[0048] Preferably, the ejector 7 is located at the lower part of the second chain tooth row 2b, which helps to increase the operability of the zipper pull 3 in disassembly and assembly, as well as the overall appearance and manufacturing convenience of the zipper.

[0049] like Figure 5 and Figure 6 As shown, preferably, the ejector 7 is located at the bottom of the second chain tooth row 2b, thereby achieving optimal operability for detaching and assembling the zipper pull 3, as well as the overall appearance and manufacturing convenience of the zipper. In other embodiments, the ejector 7 may also be located between the teeth of the second chain tooth row 2b, and the zipper pull 3 can be detached or inserted into the second chain tooth row 2b at the ejector 7.

[0050] like Figure 7 , Figure 8 and Figure 9 As shown, preferably, the lower end face of the first tooth 81 of the second chain tooth row 2b adjacent to the first disengagement portion 72, away from the first chain tooth row 2a (right side), is a second inclined surface 811 extending from top to bottom towards the first chain tooth row 2a (to the left). This increases the space between the first chain tooth 81 and the base 71 for the side plate 32 of the pull head 3 to pass through, and avoids interference between the side plate 32 of the pull head 3 and the first chain tooth 81 when the side plate 32 of the pull head 3 is deflected and introduced into the first disengagement portion 72.

[0051] Preferably, the upper end face of the base 71 away from the first chain tooth row 2a (right side) is a third inclined surface 73 extending from bottom to top towards the first chain tooth row 2a (to the left). The third inclined surface 73 can guide the deflection of the side plate 32 of the pull head 3 and its introduction into the first disengagement part 72.

[0052] When disassembling the pull head using the release component 7 in this embodiment, as follows: Figure 5 As shown, the slider 3 is moved down until its central post 31 abuts against the closed lower stop 4. Then, the second chain 1b is deflected to the right relative to the slider 3, and the upper end of the right side plate 32 of the slider 3 is introduced into the first disengagement part 72 of the disengagement member 7 through the third inclined surface 73. Then, the slider 3 is moved up while the second chain 1b continues to deflect to the right relative to the slider 3. This allows the right side plate 32 of the slider 3 to deflect along the first disengagement part 72 through the space between the base 71 of the disengagement member 7 and the first chain tooth 81 until the lower end of the right side plate 32 of the slider 3 disengages from the first disengagement part 72, at which point the slider 3 disengages from the second chain tooth row 2b. The reverse operation completes the insertion of the slider 3 into the second chain tooth row 2b.

[0053] like Figure 1 and Figure 2As shown, in this embodiment, preferably, the ejector 7 engages with the second chain tooth 82 and the third chain tooth 83 of the corresponding first chain tooth row 2a via the first ejection portion 72. Since the ejector 7 is located at the bottom of the second chain tooth row 2b, the second chain tooth 82 and the third chain tooth 83 of the first chain tooth row 2a corresponding to the first ejection portion 72 of the ejector 7 are the two bottommost chain teeth of the first chain tooth row 2a. The second chain tooth 82 is located below the third chain tooth 83 and above the first lower stop member 41 of the lower stop member 4.

[0054] like Figure 10 , Figure 11 and Figure 12 As shown, the back side of the second chain tooth 82, near the right side of the second chain tooth row 2b, is recessed towards the front to form a first notch 821, which allows the lower part of the first disengagement portion 72 of the disengagement member 7 to be inserted. The lower part of the third chain tooth 83, near the right side of the second chain tooth row 2b, is recessed towards the back to form a second notch 831, which allows the upper part of the first disengagement portion 72 of the disengagement member 7 to be inserted. The first notch 821 and the second notch 831 have a gap in the thickness direction that is not less than the thickness of the first disengagement portion 72, for accommodating the first disengagement portion 72. Thus, the first disengagement portion 72 can be embedded between the second chain tooth 82 and the third chain tooth 83, forming an engagement with the second chain tooth 82 and the third chain tooth 83. The upper part of the third chain tooth 83 engages with the lower part of the first chain tooth 81 of the first disengagement portion 72 of the disengagement member 7 adjacent to the second chain tooth row 2b.

[0055] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A zipper, comprising: The first chain band (1a) and the second chain band (1b) are set relative to each other; The first chain tooth row (2a) and the second chain tooth row (2b) are arranged opposite to each other and respectively disposed on the first chain belt (1a) and the second chain belt (1b); A puller (3) that engages or disengages the first chain teeth (2a) and the second chain teeth (2b); Its characteristic is that it further includes: The first upper stop (5) is disposed on the first chain (1a) and located at the upper end of the first chain tooth row (2a); The second upper stop (6) is disposed on the second chain (1b) and located at the upper end of the second chain tooth row (2b); the first upper stop (5) and the second upper stop (6) prevent the pull head (3) from disengaging from the upper ends of the first chain tooth row (2a) and the second chain tooth row (2b) when the first chain tooth row (2a) and the second chain tooth row (2b) are engaged; The first upper stop (5) enables the pull head (3) to be disengaged or inserted into the upper end of the first chain tooth row (2a), and the second chain tooth row (2b) is provided with a disengagement member (7) that enables the pull head (3) to be disengaged or inserted into the second chain tooth row (2b).

2. The zipper according to claim 1, characterized in that, The ejector (7) includes a base (71) and a first ejector portion (72) connected to the upper end face of the base (71), the thickness of the first ejector portion (72) being reduced relative to the thickness of the base (71) to a thickness that allows the pull head (3) to deflect through.

3. The zipper according to claim 1, characterized in that, The first upper stop (5) includes a stop (51) and a second disengagement part (52) connected to the upper end surface of the stop (51). The thickness of the second disengagement part (52) is reduced relative to the thickness of the stop (51) to a thickness that allows the pull head (3) to deflect through.

4. The zipper according to claim 3, characterized in that, The upper end face of the stop (51) away from the second chain (1b) is a first inclined surface (53) that extends obliquely from bottom to top toward the second chain (1b).

5. The zipper according to claim 1, characterized in that, The ejector (7) is located at the lower part of the second chain tooth row (2b).

6. The zipper according to claim 1, characterized in that, The ejector (7) is located between the teeth of the second chain tooth row (2b) or at the bottom of the second chain tooth row (2b).

7. The zipper according to claim 1, characterized in that, The ejector (7) occupies the position of two adjacent teeth of the second chain tooth row (2b) and can engage with the corresponding teeth of the first chain tooth row (2a).

8. The zipper according to claim 2, characterized in that, The lower end face of the first tooth (81) of the second chain tooth row (2b) adjacent to the first disengaged part (72) away from the first chain tooth row (2a) is a second inclined surface (811) that extends obliquely from top to bottom toward the first chain tooth row (2a).

9. The zipper according to claim 2, characterized in that, The upper end face of the base (71) away from the first chain tooth row (2a) is a third inclined surface (73) that extends obliquely from bottom to top toward the first chain tooth row (2a).

10. The zipper according to claim 2, characterized in that, The ejector (7) can engage with the second chain tooth (82) and the third chain tooth (83) of the corresponding first chain tooth row (2a) through the first ejector part (72). The back side of the second chain tooth (82) is recessed towards the front side near the second chain tooth row (2b) to form a first notch (821) into which the lower part of the first ejector part (72) can be inserted. The front side of the lower part of the third chain tooth (83) is recessed towards the back side near the second chain tooth row (2b) to form a second notch (831) into which the upper part of the first ejector part (72) can be inserted.

11. The zipper according to claim 1, characterized in that, It also includes a lower stop (4), which is disposed on the first chain (1a) and the second chain (1b) and located at the lower end of the first chain tooth row (2a) and the second chain tooth row (2b). The lower stop (4) prevents the pull head (3) from disengaging from the lower end of the first chain tooth row (2a) and the second chain tooth row (2b) when the first chain tooth row (2a) and the second chain tooth row (2b) are separated.

12. The zipper according to claim 11, characterized in that, The lower stop (4) includes a first lower stop (41) and a second lower stop (42) that can be engaged or disengaged. The first lower stop (41) and the second lower stop (42) are respectively disposed on the first chain (1a) and the second chain (1b) and are respectively located at the lower ends of the first chain tooth row (2a) and the second chain tooth row (2b).

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