zipper

Abstract

The utility model provides a zipper which can reduce the sliding resistance of the puller. The puller (40) has: a first wing plate (43) which guides a first chain row (50); and a second wing plate (44) which is opposite to the first wing plate (43) and guides a second chain row (60), the first wing plate (43) extends substantially in parallel with the up-down direction, the second wing plate (44) is inclined in a direction away from the first wing plate (43) as it goes upwards, the first chain row (50) has a plurality of first chain teeth (53) arranged at regular intervals in the up-down direction, each first chain tooth (53) has a first protrusion (57) which protrudes upwards, the second chain row (60) has a plurality of second chain teeth (63) arranged at regular intervals in the up-down direction, each second chain tooth (63) has a second protrusion (67) which protrudes downwards and engages with the first protrusion (57).

Description

Technical Field

[0001] This utility model relates to zippers. Background Technology

[0002] Patent Document 1 discloses a self-sealing closure system. (For example, Patent Document 1...) Figure 1 and Figure 2 As schematically shown, the self-sealing closure system includes a first part 01 for interconnection with the second part 02, and each part 01, 02 includes a plurality of geometrically arranged nodules 03. Each nodule 03 has a bulbous upper surface 04 and a planar lower surface 05 that coincides with a common mating surface 14. Under the action of an applied relative compressive force C, the corresponding nodules 03, 03' of each part 01, 02 narrow through the corresponding receiving openings 13, 13' and elastically expand within their respective receiving bodies 06, 06', causing the first part 01 to move in conjunction with the second part 02, and each nodule 03 to be rolled into the corresponding receiving body 06. Thus, the first part 01 and the second part 02 can be fastened together.

[0003] While parts 1 (01) and 2 (02) can engage with normally aligned but not yet connected parts by applying a normal compressive force, such as pressure between the thumb and forefinger, they can also be engaged using a vernier 20 that slides along the length direction. (See Patent Document 1.) Figure 4 A~ Figure 4 As indicated by D, the vernier 20 includes: an inlet chamber 21 having walls 22 aligned in the longitudinal direction; a partition rod 23 that separates into individual inlet slots for the respective portions 01 and 02; a chamber 24 for pressing nodules 03 and 03' into their respective respective receiving openings 13 and 13', the chamber 24 tapering at its apex in the longitudinal direction; an outlet chamber 26 terminating at a chamfered opening 27; and a pull tab 30 and a thumb tab 33 for applying opening and closing forces A and B in the longitudinal direction.

[0004] When the vernier 20 is guided in the longitudinal direction A, the nodules 03 of each part 01 and 02 are pressed sequentially through their respective container openings 13, and then the nodules 03 are fully pressed into their corresponding containers 06 in an elastic expansion manner. When the vernier 20 is guided in the opposite longitudinal direction B, each part 01 and 02 is separated sequentially by the separator 23.

[0005] Existing technical documents

[0006] Patent documents

[0007] Patent Document 1: U.S. Patent Application Publication No. 2021 / 267321 Utility Model Content

[0008] Problems to be solved by utility models

[0009] In the vernier 20 described in Patent Document 1 above, the dimension in the dial direction increases as it moves from the outlet chamber 26 to the inlet chamber 21 in the length direction. Here, the dial wing plate of the vernier 40 that guides part 01 ( Figure 4 The upper plate in A) tilts towards the surface as it goes toward the entrance chamber 21, and the back wing plate of the vernier 40 that guides part 02 ( Figure 4 The lower plate in A tilts towards the back as it moves toward the entrance chamber 21. In this structure, when the front part 01 and the back part 02 are engaged, both parts 01 and 02 need to bend in the front-back direction, resulting in greater bending resistance. Therefore, the sliding resistance of the vernier 40 increases.

[0010] This invention was made in view of the above-mentioned problems, and its purpose is to provide a zipper that can reduce the sliding resistance of the zipper pull.

[0011] Solution for solving the problem

[0012] To solve the above problems, this utility model can be achieved through the following structure.

[0013] [1] A zipper comprising: a pair of first zipper tapes and a second zipper tape, which are elongated in the vertical direction;

[0014] The first zipper tooth row is located at one end of the first zipper tape in the left-right direction;

[0015] The second zipper tooth row is located at one end of the second zipper tape in the left-right direction and is opposite to the first zipper tooth row; and

[0016] A zipper pull, configured to slide vertically, engages the first and second chain teeth by sliding the pull head upwards, and disengages the first and second chain teeth by sliding the pull head downwards, characterized in that...

[0017] The slider has:

[0018] A first wing plate that guides the first chain tooth row; and

[0019] The second wing plate, which is opposite to the first wing plate and guides the second chain teeth,

[0020] The first wing extends approximately parallel to the vertical direction.

[0021] The second wing plate tilts away from the first wing plate as it moves upward.

[0022] The first chain tooth row has a plurality of first chain teeth arranged at predetermined intervals in the vertical direction.

[0023] Each of the first chain teeth has a first protrusion that projects upwards.

[0024] The second chain tooth row has a plurality of second chain teeth arranged at predetermined intervals in the vertical direction.

[0025] Each of the second chain teeth has a second protrusion that protrudes downward and engages with the first protrusion.

[0026] [2] The zipper according to [1] is characterized in that,

[0027] The pull head has a pull tab on the first wing plate.

[0028] Effects of the utility model

[0029] The zipper according to this invention can reduce the sliding resistance of the zipper pull. Attached Figure Description

[0030] Figure 1 This is a perspective view of the first embodiment of the zipper of this utility model.

[0031] Figure 2 This is a 3D view of the first zipper tooth.

[0032] Figure 3 It is a cross-sectional view of the zipper in a direction roughly perpendicular to the left and right direction.

[0033] Figure 4 This is a cross-sectional view of the zipper in the first comparative example.

[0034] Figure 5 This is a cross-sectional view of the zipper in the second comparative example.

[0035] Figure 6 This is a cross-sectional view of the zipper in the third comparative example.

[0036] Figure 7 This is a cross-sectional view of the zipper in the fourth comparative example.

[0037] Figure 8 This is a graph showing the sliding resistance relative to the sliding distance of the zipper head in the zippers of this embodiment and the second to fourth comparative examples.

[0038] Explanation of reference numerals in the attached figures

[0039] 1. Zipper; 3. First zipper tooth; 5. Second zipper tooth; 10. First zipper tape; 11. Back side; 13. Surface; 20. Second zipper tape; 21. Back side; 23. Surface; 40. Slipper pull; 41. Main body; 42. Slip tab mounting part; 43. Back flap (first flap); 43a. Right flange; 44. Front flap (second flap); 44a. Left flange; 45. Connecting post; 45a. Back side; 45b. Surface; 46. Lower opening; 47. First upper opening; 48. Second upper opening; 49a, 49b. Gap; 50. First zipper tooth row; 51. First base; 52. First engagement gap; 53. First zipper tooth row. Teeth; 53A, 1st row; 53B, 2nd row; 53C, 3rd row; 53D, 4th row; 54, 1st recess groove; 55, 1st central line; 56a, 1st inner wall; 56b, 1st outer wall; 56c, 1st intermediate wall; 57, 1st protrusion; 58, 1st base; 60, 2nd chain tooth row; 61, 2nd base; 62, 2nd engagement gap; 63, 2nd chain tooth; 63A, 1st row; 63B, 2nd row; 63C, 3rd row; 63D, 4th row; 64, 2nd recess groove; 66a, 2nd inner wall; 66b, 2nd outer wall; 66c, 2nd intermediate wall; 67, 2nd protrusion; 68, 2nd base; 70, chain tooth guide path. Detailed Implementation

[0040] The zipper of the present invention will now be described in detail with reference to the accompanying drawings.

[0041] Furthermore, in this instruction manual, regarding zippers, "up and down direction" refers to the sliding direction of the zipper head, and also to the length direction of the zipper. In particular, the direction in which the zipper head slides to engage the left and right zipper teeth is defined as "up," and the direction in which the zipper head slides to disengage the left and right zipper teeth is defined as "down."

[0042] Additionally, regarding zippers, "left and right direction" refers to the direction in which a pair of chain teeth are arranged, which is perpendicular to the sliding direction of the zipper pull, and can also be referred to as the width direction of the zipper.

[0043] Furthermore, regarding zippers, "front and back direction" refers to a direction orthogonal to the up-down and left-right directions, and can also be referred to as the thickness direction of the zipper tape or the height direction of the zipper teeth. In addition, in the figure, the side with the back flap 43 where the zipper mounting part 42 described later is installed is referred to as the "back side", but this is not intended to limit the "front and back direction" in actual use. When the zipper 1 is installed on clothing or the like, the side with the back flap 43 where the zipper mounting part 42 is installed is called the "front side (outer side)".

[0044] Figure 1 This is a perspective view of the first embodiment of the zipper according to this utility model. (See attached image.) Figure 1As shown, the zipper 1 of this embodiment includes: a pair of left and right first zipper teeth straps 3 and second zipper teeth straps 5; and a zipper pull 40, which is capable of opening and closing the pair of left and right first zipper teeth straps 3 and second zipper teeth straps 5. As will be described later, the first zipper teeth 50 and the second zipper teeth 60 are engaged by sliding the zipper pull 40 upward, and the first zipper teeth 50 and the second zipper teeth 60 are disengaged by sliding the zipper pull 40 downward.

[0045] Figure 2 This is a perspective view of the first zipper tooth strap. Furthermore, aside from the vertical projection of the first zipper tooth 53 and the second zipper tooth 63, the second zipper tooth strap 5 is approximately point-symmetrical in shape to the first zipper tooth strap 3 after rotating it 180° relative to the vertical axis; therefore, the perspective view of the second zipper tooth strap 5 is omitted. Figure 1 and Figure 2 As shown, the left and right pairs of first zipper tooth chain straps 3 and second zipper tooth chain straps 5 include: a pair of left and right first zipper straps 10 and second zipper straps 20, which are elongated in the vertical direction and have back surfaces 11, 21 and surfaces 13, 23 on opposite sides of the back surfaces 11, 21 respectively; a first chain tooth row 50, which is provided at one end of the first zipper strap 10 in the left and right direction ( Figure 1 The right end); and the second chain tooth row 60, which is located at one end of the second zipper tape 20 in the left-right direction ( Figure 1 (The left end). The side of the first zipper tape 10 and the second zipper tape 20 with the first chain tooth row 50 and the second chain tooth row 60 in the left and right directions is defined as one end side in the left and right directions, and the other side is defined as the other end side in the left and right directions.

[0046] The first zipper tape 10 and the second zipper tape 20 are made of fabric or woven material such as polyester yarn, and have excellent softness. In addition, the material of the first zipper tape 10 and the second zipper tape 20 is not particularly limited, and can also be resin or non-woven fabric.

[0047] Figure 3 This is a cross-sectional view of the zipper relative to a direction roughly perpendicular to the left and right directions. For example... Figures 1-3 As shown, the first chain tooth row 50 and the second chain tooth row 60 may each have a first base 51 and a second base 61, respectively, and the first base 51 and the second base 61 include a surface and a back surface opposite to the surface. The surface of the first base 51 and the back surface of the second base 61 are arranged opposite to each other in the surface-back direction.

[0048] The first tooth row 50 has a plurality of first teeth 53, 53 extending from the surface of the first base 51 toward the surface side. The second tooth row 60 has a plurality of second teeth 63, 63 extending from the back side of the second base 61 toward the back side side. The plurality of first teeth 53 and the plurality of second teeth 63 are arranged at predetermined intervals in the vertical direction. In the illustrated example, there are four rows of the plurality of first teeth 53 and four rows of the plurality of second teeth 63 arranged in the vertical direction in the horizontal direction.

[0049] Each pair of first teeth 53 and each pair of second teeth 63 adjacent in the vertical direction are separated by a tooth spacing distance P. Each pair of first teeth 53 and each pair of second teeth 63 adjacent in the vertical direction forms a first engagement gap 52 and a second engagement gap 62 between them. The second tooth row 60 is configured such that when the back surface of the second tooth row 60 faces and approaches the surface of the first tooth row 50, it is fastened to the first tooth row 50. The plurality of first engagement gaps 52, 52 of the first tooth row 50 are sized to accommodate the plurality of second teeth 63, 63 of the second tooth row 60 in a way that allows for easy engagement. Furthermore, the plurality of second engagement gaps 62, 62 of the second tooth row 60 are sized to accommodate the plurality of first teeth 53, 53 of the first tooth row 50 in a way that allows for easy engagement. The assembly thickness T of the first tooth row 50 and the second tooth row 60, which are assembled integrally, is shown in [the figure]. Figure 3 .

[0050] A plurality of first recessed grooves 54 are formed on the back side of the first base 51 of the first tooth row 50, and a plurality of second recessed grooves 64 are formed on the surface of the second base 61 of the second tooth row 60. The first recessed grooves 54 are recessed towards the surface side, and the second recessed grooves 64 are recessed towards the back side. The first recessed grooves 54 and the second recessed grooves 64 extend transversely through the first base 51 and the second base 61 in the left-right direction, respectively. The plurality of first recessed grooves 54 and the plurality of second recessed grooves 64 are formed in the vertical direction at positions substantially aligned with the first tooth 53 and the second tooth 63. When "substantially aligned", at least a portion of the vertical position of each first recessed groove 54 and the second recessed groove 64 overlaps with the vertical position of the first tooth 53 and the second tooth 63. More preferably, in the vertical direction, the centers of the first retraction groove 54 and the second retraction groove 64 are aligned with the centers of the first chain tooth 53 and the second chain tooth 63. By providing the first retraction groove 54 and the second retraction groove 64 in this way, bending of the first chain tooth row 50 and the second chain tooth row 60 is permitted.

[0051] As shown in the attached figures, the first base 51 and a plurality of first chain teeth 53, 53 can be integrally formed with each other. Similarly, the second base 61 and a plurality of second chain teeth 63, 63 can be integrally formed with each other. In addition, the first chain tooth row 50 formed by the first base 51 and the plurality of first chain teeth 53, 53 can be integrally formed with the first zipper tape 10. Similarly, the second chain tooth row 60 formed by the second base 61 and the plurality of second chain teeth 63, 63 can be integrally formed with the second zipper tape 20. In a modified example, the first chain tooth row 50 and the second chain tooth row 60 can be formed independently of the first zipper tape 10 and the second zipper tape 20, and the independent first chain tooth row 50 and the second chain tooth row 60 can be connected to the first zipper tape 10 and the second zipper tape 20.

[0052] like Figure 2 As shown, the first zipper chain strap 3 can divide a first central line 55 that is orthogonal to the back surface direction and passes through the center between the back surface 11 and the surface 13 of the first zipper chain strap 10. Similarly, although not shown, the second zipper chain strap 5 can divide a second central line that is orthogonal to the back surface direction and passes through the center between the back surface 21 and the surface 23 of the second zipper chain strap 20. In this embodiment, the first zipper chain strap 3 and the second zipper chain strap 5 are approximately point-symmetrical except for the vertical projection directions of the first chain tooth 53 and the second chain tooth 63. Therefore, Figure 2 The first zipper tooth chain 3 can also be said to show the general structure of the second zipper tooth chain 5.

[0053] Furthermore, the first chain tooth row 50 and the second chain tooth row 60 each include: a first inner wall 56a and a second inner wall 66a, which connect the first base 51 and the second base 61 to the first zipper tape 10 and the second zipper tape 20; a first outer wall 56b and a second outer wall 66b, which are located away from the first inner wall 56a and the second inner wall 66a; and a first intermediate wall 56c and a second intermediate wall 66c, which are located between the first inner wall 56a and the second inner wall 66a and the first outer wall 56b and the second outer wall 66b. That is, the first outer wall 56b and the second outer wall 66b, the first intermediate wall 56c and the second intermediate wall 66c, and the first inner wall 56a and the second inner wall 66a are respectively provided at one end in the left-right direction, the middle part in the left-right direction, and the other end in the left-right direction of the first base 51 and the second base 61.

[0054] Furthermore, in the illustrated example, a first zipper tape 10 is connected to the top end (outer side end) of the first inner wall 56a, and a second zipper tape 20 is connected to the top end (back side end) of the second inner wall 66a. A first base 51 is connected to the base end (back side end) of the first inner wall 56a, and a second base 61 is connected to the base end (outer side end) of the second inner wall 66a. Therefore, the first base 51 is located on the back side of the first zipper tape 10, and the second base 61 is located on the outer side of the second zipper tape 20.

[0055] like Figure 2 As shown, the first intermediate wall 56c can be configured to extend from the first base 51 in the outward direction and terminate at the first central line 55. Conversely, the second intermediate wall 66c can be configured to extend from the second base 61 in the backward direction and terminate at the second central line (not shown). In this case, when the first chain tooth 50 and the second chain tooth 60 engage, the first intermediate wall 56c and the second intermediate wall 66c abut against each other in the outward direction, or face each other with a small gap in the outward direction.

[0056] Furthermore, it can be configured such that the first intermediate wall 56c is shorter than the length terminating at the first central line 55, and the second intermediate wall 66c is shorter than the length terminating at the second central line (not shown). In this case, when the first chain tooth 50 and the second chain tooth 60 are engaged, the first intermediate wall 56c and the second intermediate wall 66c are opposite each other with a gap in the front-back direction.

[0057] The presence of these walls (first inner wall 56a and second inner wall 66a, first outer wall 56b and second outer wall 66b, first intermediate wall 56c and second intermediate wall 66c) enhances the lateral strength of the first zipper tooth belt 3 and the second zipper tooth belt 5. That is, even under lateral loads, the likelihood of accidental disengagement of the engagement between the first zipper tooth belt 3 and the second zipper tooth belt 5 is reduced.

[0058] like Figure 1 and Figure 2 As shown, the first chain tooth row 50 includes four rows of multiple first chain teeth 53, 53 along the longitudinal direction. The four rows of first chain teeth 53 are named 1st row 53A, 2nd row 53B, 3rd row 53C, and 4th row 53D in order from the side of the first inner wall 56a (the other end in the left-right direction) toward the side of the first outer wall 56b (one end in the left-right direction). The first row 53A and the second row 53B are arranged between the first inner wall 56a and the first intermediate wall 56c, and the other two rows are arranged between the first outer wall 56b and the first intermediate wall 56c.

[0059] The first teeth 53 of each of columns 1 through 4 (53A and 53D) are roughly the same in the vertical direction. Therefore, the first teeth 53 of each of columns 1 through 4 (53D) are arranged to be adjacent in the horizontal direction. There is a horizontal gap between the first teeth 53 of column 1 (53A) and the first teeth 53 of column 2 (53B). Similarly, there is also a horizontal gap between the first teeth 53 of column 3 (53C) and the first teeth 53 of column 4 (53D). The presence of the aforementioned walls (first inner wall 56a, first outer wall 56b, and first intermediate wall 56c) restricts the movement of the second tooth row 60 relative to the first tooth row 50. Furthermore, the horizontal gaps reduce the necessity for precise alignment between the first tooth row 50 and the second tooth row 60 in the horizontal direction.

[0060] There is also a left-right gap between the first chain tooth 53 of column 2 53B and the first chain tooth 53 of column 3 53C, but a first intermediate wall 56c is provided in this gap.

[0061] like Figure 1 As shown, the second chain tooth row 60 comprises four rows of multiple second chain teeth 63, 63 along the longitudinal direction. The four rows of second chain teeth 63 are named, in order from the second inner wall 66a side (the other end in the left-right direction) towards the second outer wall 66b side (one end in the left-right direction), as row 1 63A, row 2 63B, row 3 63C, and row 4 63D. Row 1 63A and row 2 63B are positioned between the second inner wall 66a and the second intermediate wall 66c, while the other two rows are positioned between the second outer wall 66b and the second intermediate wall 66c.

[0062] The second teeth 63 of each of columns 1 to 4 (63A to 63D) are roughly the same in the vertical direction. Therefore, the second teeth 63 of each of columns 1 to 4 (63A to 63D) are arranged to be adjacent in the horizontal direction. There is a horizontal gap between the second teeth 63 of column 1 (63A) and the second teeth 63 of column 2 (63B). Similarly, there is also a horizontal gap between the second teeth 63 of column 3 (63C) and the second teeth 63 of column 4 (63D). The presence of the aforementioned walls (second inner wall 66a, second outer wall 66b, and second intermediate wall 66c) restricts the movement of the first tooth row 50 relative to the second tooth row 60. On the other hand, the horizontal gaps reduce the necessity for accurate alignment between the first tooth row 50 and the second tooth row 60 in the horizontal direction.

[0063] There is also a left-right gap between the second chain tooth 63 of column 2 63B and the second chain tooth 63 of column 3 63C, but a second intermediate wall 66c is provided in this gap.

[0064] The first chain tooth 53 and the second chain tooth 63 can be composed of any number of columns. In the above embodiment, the first chain tooth 53 and the second chain tooth 63 each have 4 columns, but for example, they can also have 1 to 3 columns, or even 5 or more columns. By increasing the number of columns, the engagement strength and lateral strength of the first chain tooth column 50 and the second chain tooth column 60 can be improved.

[0065] The first zipper tape 10 and the second zipper tape 20 are substantially arranged on the same plane when the first zipper tooth row 50 and the second zipper tooth row 60 engage with each other. More specifically, the first center line 55 of the first zipper tape 10 (refer to...) Figure 2 The second zipper tape 20 and the second central line (not shown) are substantially arranged on the same plane.

[0066] like Figure 3 As shown, each first chain tooth 53 has a first protrusion 57 protruding upward from its tip (surface end). Additionally, each second chain tooth 63 has a second protrusion 67 protruding downward from its tip (back end). The first protrusion 57 and the second protrusion 67 bulge in the vertical direction relative to the first base 58 of the first chain tooth 53 and the second base 68 of the second chain tooth 63, having a hook shape as illustrated in the example. The first chain tooth row 50 and the second chain tooth row 60 are engaged by the hook shape of the first protrusion 57 and the hook shape of the second protrusion 67. When the first chain tooth row 50 and the second chain tooth row 60 are engaged, the first protrusion 57 is received in the second engagement gap 62, and the second protrusion 67 is received in the first engagement gap 52.

[0067] The pull head 40 engages and disengages the left and right pairs of first chain teeth 50 and second chain teeth 60. For example... Figure 1 and Figure 3 As shown, the zipper pull 40 includes a main body 41, a pull tab mounting portion 42 provided on the back of the main body 41, and a pull tab (not shown) mounted on the pull tab mounting portion 42. Furthermore, by moving the zipper pull 40 upwards, a pair of first chain teeth 50 and second chain teeth 60 engage; by moving the zipper pull 40 downwards, the pair of first chain teeth 50 and second chain teeth 60 disengage. Additionally, the zipper 1 may also include an upper stop portion and a lower stop portion (not shown). Alternatively, an opening member having a base bar and a base body may be provided instead of the lower stop portion.

[0068] The main body 41 of the zipper pull 40 includes: a back wing plate 43 serving as a first wing plate, which guides the first chain teeth 50; a front wing plate 44 serving as a second wing plate, which is opposite to the back wing plate 43 in the front-back direction and guides the second chain teeth; a right flange portion 43a extending from the right end of the back wing plate 43 toward the front side; a left flange portion 44a extending from the left end of the front wing plate 44 toward the back side; and a connecting post 45 connecting the upper end of the right flange portion 43a and the upper end of the left flange portion 44a in the left-right direction.

[0069] A gap 49a exists in the back direction between the top end (back side end) of the left flange 44a and the back flap 43. This gap 49a functions as a groove for the first zipper tape 10 of the first zipper tooth tape 3 to slide. A gap 49b exists in the back direction between the top end (front side end) of the right flange 43a and the flap 44. This gap 49b functions as a groove for the second zipper tape 20 of the second zipper tooth tape 5 to slide.

[0070] like Figure 3 As shown, at the lower end of the main body 41, a lower opening 46 is formed between the back wing plate 43, the front wing plate 44, the right flange portion 43a, and the left flange portion 44a. At the upper end of the main body 41, a second upper opening 48 and a first upper opening 47 are provided on the back of the connecting post 45. The first upper opening 47 is formed between the back wing plate 43, the connecting post 45, the right flange portion 43a, and the left flange portion 44a. The second upper opening 48 is formed between the front wing plate 44, the connecting post 45, the right flange portion 43a, and the left flange portion 44a.

[0071] Inside the main body 41, there is a chain tooth guide path 70 that connects the lower opening 46 with the first upper opening 47 and the second upper opening 48. The chain tooth guide path 70 has one passage extending from the lower opening 46 to the position of the connecting post 45, and two passages branching from the connecting post 45 to the back of the watch and extending to the second upper opening 48 and the first upper opening 47, forming an overall shape of approximately Y.

[0072] The first chain tooth row 50 is guided by the back-side passage in the chain tooth guide path 70, and the second chain tooth row 60 is guided by the front-side passage in the chain tooth guide path 70. For example, when the slider 40 is slid upward, the first chain tooth row 50 and the second chain tooth row 60 are guided from the first upper opening 47 and the second upper opening 48 toward the lower opening 46, approaching and engaging each other in the front-back direction. Conversely, when the slider 40 is slid downward, the first chain tooth row 50 and the second chain tooth row 60 are guided from the lower opening 46 toward the first upper opening 47 and the second upper opening 48, and the engagement is disengaged.

[0073] Here, the back flap 43 extends approximately parallel to the vertical direction. In the illustrated example, the back flap 43 is a planar shape approximately perpendicular to the direction of the back of the zipper. Here, when the back flap 43 is "approximately parallel to the vertical direction," the back flap 43 is approximately parallel to the surface of the zipper 1 in the engaged state, which is lower than the slider 40; that is, it is approximately parallel to the direction in which the first and second sets of meshing teeth 50 extend. Figure 3As shown, the back wing plate 43 extends approximately parallel to the direction D extending relative to the first chain tooth row 50 and the second chain tooth row 60 engaging with the assembly thickness T, without tilting relative to direction D in the front / back direction or the left / right direction. To match the shape of the back wing plate 43, the back surface 45a of the connecting post 45 is also approximately parallel to the vertical direction. In the illustrated example, the back surface of the connecting post 45 is a planar shape approximately perpendicular to the front / back direction. Therefore, the path guiding the back side of the first chain tooth row 50 in the chain tooth guide path 70 becomes approximately straight. Furthermore, the first chain tooth row 50, guided by the back wing plate 43 and the connecting post 45 within the chain tooth guide path 70, extends approximately parallel to the vertical direction, without tilting relative to direction D in the front / back direction or the left / right direction, maintaining an approximately straight shape.

[0074] The watch wing plate 44 does not extend approximately parallel to the vertical direction, but instead tilts upwards towards the surface, away from the back wing plate 43. That is, the watch wing plate 44 tilts relative to the aforementioned direction D in the watch back direction. To match the shape of the watch wing plate 44, the surface 45b of the connecting post 45 also tilts upwards towards the surface, away from the back wing plate 43. Therefore, the path guiding the surface of the second chain tooth row 60 in the chain tooth guide path 70 becomes an inclined path that tilts upwards towards the surface. Furthermore, the second chain tooth row 60, guided by the watch wing plate 44 and the connecting post 45 within the chain tooth guide path 70, is formed into a shape that curves upwards towards the surface.

[0075] Thus, through such Figure 3 The shapes of the back wing plate 43 and front wing plate 44 that constitute the slider 40, as shown, when the first chain tooth 50 and the second chain tooth 60 are engaged, the first chain tooth 50 maintains a roughly straight shape, while only the second chain tooth 60 flexes and engages. Therefore, the bending resistance of the first chain tooth 50 and the second chain tooth 60 as a whole can be reduced, and the sliding resistance of the slider 40 can be reduced.

[0076] Figure 4 This is a cross-sectional view of the zipper in the first comparative example. Figure 4 In the first comparative example shown, the back wing plate 43 and the front wing plate 44 are inclined relative to the back surface direction, moving away from each other as they go upwards. In this comparative example, when the first chain tooth 50 and the second chain tooth 60 engage, both the first chain tooth 50 and the second chain tooth 60 need to flex in the back surface direction. Therefore, the bending resistance of the first chain tooth 50 and the second chain tooth 60 as a whole increases, and the sliding resistance of the slider 40 increases.

[0077] In addition, Figure 3In the embodiment shown, the first protrusion 57 of the first chain tooth 53, which maintains a generally straight shape during engagement, protrudes upward (in the direction in which the pull head 40 slides during engagement), while the second protrusion 67 of the second chain tooth 63, which bends during engagement, protrudes downward (in the direction in which the pull head 40 slides when disengaged). Thus, compared with the reference... Figure 5 Compared to the second comparative example described later, when the first protrusion 57 and the second protrusion 67 engage, the interference between the first protrusion 57 and the second protrusion 67 can be reduced, and the engagement of the first chain tooth row 50 and the second chain tooth row 60 becomes smoother.

[0078] Figure 5 This is a cross-sectional view of the zipper in the second comparative example. Figure 5 In the second comparative example shown, the first protrusion 57 of the first chain tooth 53 protrudes downward, and the second protrusion 67 of the second chain tooth 63 protrudes upward, which is similar to... Figure 3 The implementation shown is different. Observation Figure 5 As shown by reference numeral A in the attached diagram, in this structure, the first protrusion 57 and the second protrusion 67 will interfere and engage strongly with each other, thus generating vibration during engagement, which may cause the user to feel a clicking or clattering vibration. Furthermore, if the interference force between the first protrusion 57 and the second protrusion 67 is too strong, it may result in improper engagement between the first protrusion 57 and the second protrusion 67, and increased sliding resistance of the slider 40, among other problems.

[0079] in addition, Figure 3 In the embodiment shown, the zipper head 40 has a zipper mounting portion 42 on the back wing plate 43 that extends substantially parallel to the vertical direction, and a zipper is provided in the zipper mounting portion 42. Therefore, when the zipper head 40 is moved in the vertical direction by pulling the zipper, the rotation of the zipper head 40 can be suppressed, and the sliding resistance of the zipper head 40 can be reduced.

[0080] Figure 6 This is a cross-sectional view of the zipper in the third comparative example. Figure 6 The third comparative example shown is similar to the one shown in that it has a pull tab mounting part 42 on the wing plate 44 with an inclined shape. Figure 3 This embodiment differs from the one shown. In this third comparative example, when the pull tab is pulled and the pull head 40 moves in the vertical direction, since the pull tab mounting portion 42 is provided on the inclined wing plate 44, pressure is applied to the pull head 40. Figure 6 The force that rotates clockwise or counterclockwise on the paper surface. As a result, the sliding resistance of the pull head 40 increases, which may make it difficult to slide smoothly.

[0081] Figure 7 This is a cross-sectional view of the zipper in the fourth comparative example. Figure 7 In the fourth comparative example shown, it is similar to the example in the following aspects. Figure 3The embodiment shown differs in that the first protrusion 57 of the first chain tooth 53 protrudes downward, the second protrusion 67 of the second chain tooth 63 protrudes upward, and a pull tab mounting portion 42 is provided on the inclined watch face plate 44. In this fourth comparative example, because the first protrusion 57 and the second protrusion 67 strongly interfere with and engage with each other, vibration is generated during engagement, which may cause the user to feel a clicking vibration. Moreover, when the pull tab is pulled and the pull head 40 moves in the vertical direction, the pull tab mounting portion 42 on the inclined watch face plate 44 will apply pressure to the pull head 40. Figure 6 The force that rotates clockwise or counterclockwise on the paper surface. As a result, the sliding resistance of the pull head 40 increases, which may make it difficult to slide smoothly.

[0082] Figure 8 This is a graph showing the sliding resistance relative to the sliding distance of the zipper head in the zippers of this embodiment and the second to fourth comparative examples. The inventor of this utility model has made adjustments to this embodiment (see reference 2). Figures 1-3 ), the second comparative example (refer to) Figure 5 ), 3rd Comparative Example (refer to) Figure 6 ) and the 4th comparative example (refer to) Figure 7 The sliding resistance of the slider 40 when it slides upward was measured. The measurement results are shown below. Figure 8 .like Figure 8 As shown, it can be seen that in the zipper 1 of this embodiment, the sliding resistance is very low compared with the second to fourth comparative examples, and smooth engagement can be achieved.

[0083] Furthermore, this utility model is not limited to the contents illustrated in the above embodiments, and can be appropriately modified within the scope of the spirit of this utility model.

[0084] In the above embodiment, a so-called longitudinally engaged zipper is described, in which the first chain tooth row 50 and the second chain tooth row 60 are opposite each other in the front-back direction and the first chain tooth 53 and the second chain tooth 63 mesh in the front-back direction. However, the present invention is not limited to the above embodiment. For example, the first chain tooth row 50 and the second chain tooth row 60 can also be a so-called transversely engaged zipper, in which the first chain tooth 53 and the second chain tooth 63 are opposite each other in the left-right direction and mesh in the left-right direction. In this case, the zipper pull 40 and the first chain tooth row 50 and the second chain tooth row 60 become... Figures 1-3The shape shown is rotated 90° compared to the embodiment described above. Furthermore, the first wing plate of the zipper head 40, which guides the first set of teeth 50, extends approximately parallel to the vertical and front / back directions (and approximately perpendicular to the left / right direction), while the second wing plate of the zipper head 40, which guides the second set of teeth 60, tilts in a left / right direction away from the first wing plate as it moves upwards. When this invention is applied to a zipper with lateral engagement, the same effect as the embodiment described above can be achieved.

[0085] As stated above, the following matters are disclosed in this specification.

[0086] [1] A zipper comprising:

[0087] A pair of first zipper tapes (10) and second zipper tapes (20) on the left and right sides, which are long strips in the vertical direction;

[0088] The first zipper tooth row (50) is located at one end of the first zipper tape (10) in the left-right direction;

[0089] The second zipper tooth row (60) is located at one end of the second zipper tape (20) in the left-right direction and is opposite to the first zipper tooth row (50); and

[0090] A slider (40) configured to slide vertically, wherein sliding the slider (40) upward engages the first chain tooth row (50) with the second chain tooth row (60), and sliding the slider (40) downward disengages the first chain tooth row (50) from the second chain tooth row (60), characterized in that...

[0091] The slider (40) has:

[0092] The first wing plate (43) guides the first chain tooth row (50); and

[0093] The second wing plate (44), which is opposite to the first wing plate (43) and guides the second chain tooth row (60),

[0094] The first wing plate (43) extends approximately parallel to the vertical direction.

[0095] The second wing plate (44) tilts away from the first wing plate (43) as it moves upward.

[0096] The first chain tooth row (50) has a plurality of first chain teeth (53) arranged at predetermined intervals in the vertical direction.

[0097] Each of the first chain teeth (53) has a first protrusion (57) that protrudes upward.

[0098] The second chain tooth row (60) has a plurality of second chain teeth (63) arranged at predetermined intervals in the vertical direction.

[0099] Each of the second chain teeth (63) has a second protrusion (67) that protrudes downward and engages with the first protrusion (57).

[0100] According to this structure, the first wing plate (43) of the pull head that guides the first chain tooth (50) extends parallel to the vertical direction, and the second wing plate (44) of the pull head that guides the second chain tooth (60) tilts away from the first wing plate (43) as it moves upward. Therefore, when the first chain tooth (50) and the second chain tooth (60) engage, the first chain tooth (50) maintains a roughly straight shape, while only the second chain tooth (60) flexes and engages. This reduces the overall bending resistance of the first chain tooth (50) and the second chain tooth (60), and also reduces the sliding resistance of the pull head (40).

[0101] Furthermore, since the first protrusion (57) of the first tooth (53) protrudes upward and the second protrusion (67) of the second tooth (63) protrudes downward, the resistance when the first protrusion (57) and the second protrusion (67) engage can be reduced, and the meshing of the first tooth row (50) and the second tooth row (60) becomes smoother. Conversely, if the first protrusion (57) of the first tooth (53) is configured to protrude rearward and the second protrusion (67) of the second tooth (63) protrudes forward, the first protrusion (57) and the second protrusion (67) will interfere and engage more strongly, which may hinder the meshing of the first tooth row (50) and the second tooth row (60).

[0102] [2] According to the zipper described in [1], the zipper head (40) is provided with a pull tab on the first wing plate (43).

[0103] According to this structure, since the first wing plate (43) which extends approximately parallel to the vertical direction is provided with a pull tab, when the pull tab is pulled to move the pull head (40) in the vertical direction, the rotation of the pull head (40) can also be suppressed, and the sliding resistance of the pull head (40) can be reduced.

Claims

1. A zipper comprising: a pair of first zipper tapes (10) and a second zipper tape (20) on the left and right sides, which are elongated in the vertical direction; The first zipper tooth row (50) is located at one end of the first zipper tape (10) in the left-right direction; The second zipper tooth row (60) is located at one end of the second zipper tape (20) in the left-right direction and is opposite to the first zipper tooth row (50); and A slider (40) configured to slide vertically, wherein sliding the slider (40) upward engages the first chain tooth row (50) with the second chain tooth row (60), and sliding the slider (40) downward disengages the first chain tooth row (50) from the second chain tooth row (60), characterized in that... The slider (40) has: The first wing plate (43) guides the first chain tooth row (50); and The second wing plate (44), which is opposite to the first wing plate (43) and guides the second chain tooth row (60), The first wing plate (43) extends approximately parallel to the vertical direction. The second wing plate (44) tilts away from the first wing plate (43) as it moves upward. The first chain tooth row (50) has a plurality of first chain teeth (53) arranged at predetermined intervals in the vertical direction. Each of the first chain teeth (53) has a first protrusion (57) that protrudes upward. The second chain tooth row (60) has a plurality of second chain teeth (63) arranged at predetermined intervals in the vertical direction. Each of the second chain teeth (63) has a second protrusion (67) that protrudes downward and engages with the first protrusion (57).

2. The zipper according to claim 1, characterized in that, The pull head (40) has a pull tab on the first wing plate (43).

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