Zipper tooth connection belt

Abstract

A fastener stringer is provided. The main body part (71, 81) of one element (70, 80) has a first convex part (72, 82) extending from the first front and back surface (71B, 81A) side of the first top and bottom surface (71C, 81C) toward the adjacent element (70, 80), the main body part (71, 81) of the adjacent element (70, 80) has a second convex part (76, 86) extending from the second front and back surface (71A, 81B) side of the second top and bottom surface (71D, 81D) toward the one element (70, 80), and the first convex part (72, 82) and the second convex part (76, 86) overlap when viewed from the front and back directions.

Description

Technical Field

[0001] This invention relates to zipper teeth linkage. Background Technology

[0002] Traditionally, zippers with opening and closing mechanisms such as swivels and inserts have been widely used to allow opening and closing of the left and right sides of clothing. These zippers are primarily used for long coats or ski suits. To improve the functionality and design of clothing, a type of zipper is known that allows the engaged teeth of the left and right zippers to be separated from both the top and bottom of the zipper chain. Such zippers, which allow the engaged teeth to be separated from both ends, are called double-ended zippers. An example of such a bidirectional zipper is disclosed in Japanese Patent Application Publication No. 2008-99975 (Patent Document 1).

[0003] In the zipper of Patent Document 1, it is described that, for example, the left and right pairs of zipper teeth are engaged from the open (separated) state of the left and right pairs of zipper teeth, thereby closing the zipper teeth and zipper tapes together.

[0004] First, slide the pair of upper and lower sliders on the zipper teeth of one of the zipper belts to the lower end of the base bar. Next, insert the insert bar relative to the pair of upper and lower sliders that have moved to the lower end. During this insertion, the insert bar is inserted from the shoulder of the upper slider into the tooth guide of both the upper and lower sliders. Furthermore, the locking portion of the base bar is received in the insert bar receiving portion, and the insert bar is fully inserted deep into the tooth guide of the lower slider, thus completing the insertion operation. Afterward, by sliding the upper slider upward along the tooth row, the left and right tooth rows can be engaged to close the zipper.

[0005] Existing technical documents

[0006] Patent documents

[0007] Patent Document 1: Japanese Patent Application Publication No. 2008-99975 Summary of the Invention

[0008] In the zipper described in Patent Document 1, when the left and right zipper teeth are separated, i.e., in the so-called single-tooth zipper state, the rigidity in the front and back directions is not very high and it is easy to bend, which makes it difficult to insert the insert bar.

[0009] Furthermore, as mentioned above, when the zipper bar is fully inserted, the left and right zipper teeth can be closed by moving the zipper head upwards. However, if the zipper head is moved upwards when the zipper bar is not fully inserted, improper engagement may occur. To prevent such improper engagement, the inventors of this application conceived of a way to improve the zipper head's actuation speed: preferably, when the zipper bar is fully inserted, the zipper head automatically pulls upwards, and the engagement of the first zipper tooth on the socket side with the zipper bar begins.

[0010] The present invention was made in view of the above-mentioned problems, and provides a zipper tooth belt with excellent operability.

[0011] To address the aforementioned issues, the present invention is implemented through the following configuration.

[0012] [1] A zipper tooth tape, comprising:

[0013] Zipper tape (5a, 5b); and

[0014] Multiple zipper teeth (70, 80) are arranged and installed on the inner edge (6a, 6b) of the zipper tape (5a, 5b) in the width direction in the vertical direction.

[0015] The zipper teeth (3A, 3B) are characterized in that,

[0016] The zipper teeth (70, 80) include: a main body (71, 81) mounted on the inner edge (6a, 6b) in the width direction of the zipper tape (5a, 5b); and an engaging head (73, 83) extending from the main body (71, 81) toward the inner side in the width direction.

[0017] The main body portion (71, 81) of the chain teeth (70, 80) has: a first back face (71B, 81A) facing the front or back direction; a second back face (71A, 81B) facing in the opposite direction to the first back face (71B, 81A); a first upper or lower face (71C, 81C) facing upward or downward; and a second upper or lower face (71D, 81D) facing in the opposite direction to the first upper or lower face (71C, 81C).

[0018] The main body portion (71, 81) of one of the chain teeth (70, 80) has a first protrusion (72, 82) that extends from the first back face (71B, 81A) side of the first upper and lower surfaces (71C, 81C) toward the adjacent chain teeth (70, 80).

[0019] The main body portion (71, 81) of the adjacent chain teeth (70, 80) has a second protrusion (76, 86) that extends from the second upper and lower surfaces (71D, 81D) toward the second back surface (71A, 81B) side toward one of the chain teeth (70, 80).

[0020] The first protrusion (72, 82) and the second protrusion (76, 86) overlap when viewed from the back of the watch.

[0021] Invention Effects

[0022] According to the present invention, a zipper tooth belt with excellent operability can be provided. Attached Figure Description

[0023] Figure 1 This is a front view of the double-ended zipper according to the first embodiment of the present invention.

[0024] Figure 2 This is a diagram showing the state of the insert rod before it is pulled up and down and inserted, with the protrusion of the insert rod passing over the protrusion of the base rod, as viewed from the side.

[0025] Figure 3 This is a diagram showing the state of the insertion rod protrusion extending beyond the base rod protrusion, as observed from the side.

[0026] Figure 4 This is a diagram showing the first zipper tooth with insert bar viewed from the side.

[0027] Figure 5 This is a diagram showing the first zipper tooth with insert bar viewed from the back side.

[0028] Figure 6 This is a diagram showing the first zipper tooth with insert bar viewed from the inside (right) side in a left-right direction.

[0029] Figure 7 This is a diagram showing the second zipper tooth strap with the seat bar viewed from the side.

[0030] Figure 8 This is a diagram showing the second zipper tooth strap with the seat bar viewed from the back side.

[0031] Figure 9 This is a diagram showing the second zipper tooth belt with the seat bar viewed from the inside (left side) in the left-right direction.

[0032] Figure 10 This is a diagram of the first zipper tooth belt with insert bar viewed from the front side in the second embodiment.

[0033] Figure 11 This is a diagram of the first zipper tooth belt with insert bar viewed from the back side in the second embodiment.

[0034] Figure 12 This is a diagram of the first zipper tooth belt with insert bar viewed from the inside (right side) in the left-right direction after the second embodiment.

[0035] Figure 13 This is a diagram of the second zipper tooth belt with a seat bar viewed from the front side in the second embodiment.

[0036] Figure 14 This is a diagram of the second zipper tooth belt with a seat bar viewed from the back side after the second embodiment.

[0037] Figure 15 This is a diagram of the second zipper tooth belt with a seat bar, viewed from the inside (left side) in the left-right direction in the second embodiment.

[0038] Explanation of reference numerals in the attached figures

[0039] 1 Double-ended zipper

[0040] 3A and 3B zipper teeth

[0041] 5a, 5b zipper straps

[0042] Inner edge of 6a and 6b in the width direction

[0043] 10A pull-up head

[0044] 10B pull-down head

[0045] 11a, 11b Slipper Head Main Body

[0046] 12a and 12b film strainer

[0047] 13a, 13b Exterior Wings

[0048] 14a, 14b back wing plates

[0049] 15a and 15b guide pillars

[0050] 16a, 16b Film Holding Part

[0051] 17a, 17b chain guide

[0052] 18a, 18b back mouth

[0053] 19a, 19b shoulder opening

[0054] 21a, 21b Back wing flange

[0055] 21c, 21d Straight flange

[0056] 21e, 21f inclined flange

[0057] 40 insert rod

[0058] 40A surface (back of the second table)

[0059] 40B back (back of the first sheet)

[0060] 40C Left and right inner sides

[0061] 40D outer side

[0062] 40E upper side (first top and bottom)

[0063] 40F lower side (second top and bottom)

[0064] 41 Locking recess

[0065] 42 Drum section

[0066] 42a Inner side in the left and right direction

[0067] 43 Meshing protrusions

[0068] 44. Inclined surface at the lower end

[0069] 45. Insert rod protrusion

[0070] 47. Surface inclined surface

[0071] 48 lower part

[0072] 49. Storage Department

[0073] 51 First convex part

[0074] 52 First recess

[0075] 60 seat sticks

[0076] 60A surface (back of the first table)

[0077] 60B back (second table back)

[0078] 60C Left and right inner sides

[0079] 60D left and right outer sides

[0080] 60E upper side (first top and bottom)

[0081] 60F lower side (second top and bottom)

[0082] 61 Locking convex part

[0083] 61a bevel

[0084] 62a, 62b stop sections

[0085] 65 seat rod protrusion

[0086] 66 First convex part

[0087] 67 First recess

[0088] 70 chain teeth

[0089] 71 Main Body

[0090] 71A surface (back of the second table)

[0091] 71B back (back of the first watch)

[0092] 71C upper side (first top and bottom)

[0093] 71D lower side (second top and bottom)

[0094] 72 First convex part

[0095] 73 Engaging head

[0096] 74 First recess

[0097] 75 Neck

[0098] 76 Second convex part

[0099] 77 Shoulders

[0100] 78 Second recess

[0101] 80 chain teeth

[0102] 81 Main Body

[0103] 81A surface (back of first gauge, back of second gauge)

[0104] 81B back (back of first form, back of second form)

[0105] Top side of 81C (first top and bottom)

[0106] 81D lower side (second top and bottom surface)

[0107] 82 First convex part

[0108] 83 Engaging head

[0109] 84 First recess

[0110] 85 Neck

[0111] 86 Second convex part

[0112] 87 Shoulders

[0113] 88 Second recess

[0114] 90 socket

[0115] 91 Socket Body

[0116] 91a Insertion Hole Detailed Implementation

[0117] Hereinafter, the zipper teeth of various embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0118] In addition, in this instruction manual, "up and down direction" refers to the sliding direction of the zipper pull, the length direction of the zipper and zipper teeth, and the insertion and removal direction of the insert bar relative to the zipper pull and the base bar. "Up and down direction" is... Figure 1 The vertical direction. In particular, the direction in which the pull-up head slides to engage the left and right chain teeth is set as "up," and the direction in which the pull-up head slides to disengage the left and right chain teeth is set as "down." Similarly, the direction in which the pull-down head slides to engage the left and right chain teeth is "down," and the direction in which the pull-down head slides to disengage the left and right chain teeth is "up."

[0119] Additionally, "left-right direction" refers to the direction in which a pair of chain teeth are arranged, which is orthogonal to the sliding direction of the zipper pull. It can also be interpreted as the width direction of the zipper, zipper teeth, chain teeth, insert bar, and base bar. "Left-right direction" is... Figure 1 The left and right directions.

[0120] Additionally, "back direction" refers to the direction orthogonal to the up / down and left / right directions, and can also be translated as the thickness direction of the zipper, zipper teeth, chain strap, chain teeth, insert bar, and base bar. "Back direction" is... Figure 1 The depth direction of the paper.

[0121] [First Implementation Method]

[0122] Hereinafter, the zipper tooth tape of the first embodiment of the present invention will be specifically described with reference to the accompanying drawings. The left and right pair of zipper tooth tapes of this embodiment are suitable for double-ended zippers. However, as described in the second embodiment, the zipper tooth tape of the present invention can be used not only for double-ended zippers but also for straight-opening zippers.

[0123] Figure 1 This is a front view of the double-ended zipper according to the first embodiment of the present invention. Figure 1 The double-ended zipper 1 shown is an opening and closing mechanism that allows for the opening and closing of the left and right front panels of items such as short jackets or long coats. Figure 1As shown, the double-ended zipper 1 includes: a pair of first and second zipper teeth (hereinafter, the zipper teeth are also referred to as "toothed zipper") 3A and 3B; a plurality of teeth 70 and 80 (hereinafter, also referred to as "tooth") arranged opposite to each other on the inner edges of the first and second zipper teeth 3A and 3B in the left and right directions; a bar 40 and a seat bar 60 arranged opposite to each other at the lower ends of the inner edges of the first and second zipper teeth 3A and 3B in the left and right directions; and an upper pull head 10A and a lower pull head 10B arranged facing each other in the vertical direction at their rear openings 18a and 18b for opening and closing the first and second zipper teeth 3A and 3B.

[0124] The first and second zipper belts 3A and 3B each include: a strip-shaped zipper belt (hereinafter referred to as "belt") 5a and 5b that are long in the vertical direction; a plurality of zipper teeth 70 and 80 installed along the inner edge 6a and 6b of the opening and closing side of each belt 5a and 5b in the width direction; and an upper stop 33 installed on the upper part of the inner edge 6a and 6b of each belt in the width direction and restricting the upward movement of the upper zipper pull 10A.

[0125] From now on, the belt 5a constituting the first toothed chain belt 3A having the insert bar 40 is sometimes referred to as the first belt, and the belt 5b constituting the second toothed chain belt 3B having the seat bar 60 is referred to as the second belt. In this embodiment, the first and second belts 5a and 5b are made of polyamide fiber, polyester fiber, polypropylene fiber, etc., but are not limited to these.

[0126] Figure 2 and Figure 3 The timing diagram shows the state in which the insert rod 40 is inserted into the pull-up and pull-down heads 10A and 10B when the pull-up and pull-down heads 10A and 10B are slid to the lower end. Figure 2 This is a diagram showing the state of the insert rod before it is pulled up and down and inserted, with the protrusion of the insert rod passing over the protrusion of the base rod, as viewed from the side. Figure 3 This is a diagram showing the state of the insertion rod protrusion extending beyond the base rod protrusion, as observed from the side.

[0127] like Figure 1 As shown, the upper and lower sliders 10A and 10B respectively include slider bodies 11a and 11b and slider tabs 12a and 12b connected to the slider bodies 11a and 11b. (See also...) Figure 2 and Figure 3The zipper pull bodies 11a and 11b each have a front wing plate 13a and 13b disposed on the front side of the first and second chain straps 3A and 3B, and a back wing plate 14a and 14b disposed on the back side of the first and second chain straps 3A and 3B. The front wing plates 13a and 13b and the back wing plates 14a and 14b are connected at the shoulder openings 19a and 19b and at the center in the left-right direction by guide posts 15a and 15b extending in the front-back direction. By providing the guide posts 15a and 15b, Y-shaped chain tooth guide paths 17a and 17b, forming two strands towards the shoulder openings 19a and 19b, are defined between the front wing plates 13a and 13b and the back wing plates 14a and 14b inside the upper and lower zipper pulls 10A and 10B. The shoulder openings 19a and 19b of the upper and lower zipper pulls 10A and 10B are located on the side of the upper and lower zipper pulls 10A and 10B that moves to engage the zipper teeth of zipper 1 (the side where zipper 1 is closed). That is, shoulder opening 19a is located at the upper part of the upper zipper pull 10A, and shoulder opening 19b is located at the lower part of the lower zipper pull 10B. The rear openings 18a and 18b of the upper and lower zipper pulls 10A and 10B are located on the side of the upper and lower zipper pulls 10A and 10B that moves to disengage the zipper teeth of zipper 1 (the side where zipper 1 is open). That is, rear opening 18a is located at the lower part of the upper zipper pull 10A, and rear opening 18b is located at the upper part of the lower zipper pull 10B.

[0128] Figure 1 Reference numbers 16a and 16b are pull tab holding parts for connecting pull tabs 12a and 12b, and pull tab holding parts 16a and 16b protrude from the watch flaps 13a and 13b.

[0129] exist Figure 1 With the lower ends of the first and second chain straps 3A and 3B connected via the insert bar 40 and seat bar 60 (described in detail later), if the user squeezes the pull tab 12a and moves the upper pull head 10A upward, the left and right chain teeth 70 and 80 pass through the chain tooth guide 17a between the watch back flaps 13a and 14a and engage, closing the first chain strap 3A and the second chain strap 3B. If the upper pull head 10A is moved downward, the engagement of the left and right chain teeth 70 and 80 is disengaged, opening the first chain strap 3A and the second chain strap 3B. Conversely, if the user squeezes the pull tab 12b and moves the lower pull head 10B upward, the engagement of the left and right chain teeth 70 and 80 is disengaged, opening the first chain strap 3A and the second chain strap 3B. If the pull-down head 10B is moved downwards, the left and right chain teeth 70 and 80 pass through the chain tooth guide 17b between the back wing plates 13b and 14b and engage, closing the first chain belt 3A and the second chain belt 3B.

[0130] The outer wing plates 13a, 13b or the back wing plates 14a, 14b are provided with flange portions extending in the direction of the outer wing plate in the left and right directions. The flange portions in this embodiment include outer wing plate flange portions (not shown) that protrude from the outer wing plates 13a, 13b in the left and right directions toward the back wing plates 14a, 14b (back side), and back wing plate flange portions 21a, 21b that protrude from the outer wing plates 14a, 14b in the left and right directions toward the outer wing plates 13a, 13b (outer side).

[0131] The back wing flange portions 21a and 21b include: straight flange portions 21c and 21d, which are disposed on the rear openings 18a and 18b and extend in a straight line in the vertical direction; and inclined flange portions 21e and 21f, which are connected to the straight flange portions 21c and 21d and are inclined outward in the left-right direction towards the shoulder openings 19a and 19b. Although not shown, the outer wing flange portions have a shape that is substantially symmetrical to the back wing flange portions 21a and 21b in the outer-back direction. Therefore, the outer wing flange portions, like the back wing flange portions 21a and 21b, include: a straight flange portion (not shown), which is disposed on the rear openings 18a and 18b and extends in a straight line in the vertical direction; and an inclined flange portion (not shown), which is connected to the straight flange portion and is inclined outward in the left-right direction towards the shoulder openings 19a and 19b.

[0132] In this embodiment, the upper and lower pull tabs 10A and 10B are approximately the same shape. If the upper pull tab 10A is rotated 180° in a plane orthogonal to the direction of the watch back, it becomes the shape of the lower pull tab 10B. Therefore, in such a case... Figure 2 When the upper and lower pull heads 10A and 10B come into contact with each other, the chain tooth guides (rear openings 18a and 18b) of the upper and lower pull heads 10A and 10B are connected to each other.

[0133] Furthermore, the straight flange portion of the watch wing plate flange faces the straight flange portions 21c and 21d of the back wing plate flange portions 21a and 21b in the watch back direction with a gap, and the inclined flange portion of the watch wing plate flange faces the inclined flange portions 21e and 21f of the back wing plate flange portions 21a and 21b in the watch back direction with a gap. The gap in the watch back direction between these watch wing plate flange portions and the back wing plate flange portions 21a and 21b is the minimum interval between the watch wing plates 13a and 13b and the back wing plates 14a and 14b. This minimum interval is smaller than the maximum thickness in the watch back direction of the chain teeth 70 and 80, the insert bar 40, and the seat bar 60, and larger than the thickness of the first and second bands 5a and 5b. Therefore, it is possible to prevent the left and right chain teeth 70, 80, insert bar 40 and seat bar 60 from falling off the chain tooth guides 17a, 17b of the upper and lower pull heads 10A, 10B, and the upper and lower pull heads 10A, 10B can slide on the back of the first and second belts 5a, 5b.

[0134] Next, the insert rod 40 and the seat rod 60 will be described. The insert rod 40 and the seat rod 60 are formed, for example, by injection molding or extrusion molding of thermoplastic resins such as polyoxymethylene, polyamide, polypropylene, and polybutylene terephthalate relative to the lower ends of the left and right inner edges of the left and right strips 5a and 5b. Furthermore, the lower ends of the left and right strips 5a and 5b for which the insert rod 40 and the seat rod 60 are formed can also be provided as reinforcing sections reinforced with thermoplastic resin. The reinforcing sections are formed by cladding a thermoplastic resin film such as polyamide or polyethylene relative to the lower ends of the left and right strips 5a and 5b using ultrasonic processing or by impregnating and curing a thermoplastic resin liquid onto the lower ends of the left and right strips 5a and 5b.

[0135] Insert rod 40 and seat rod 60 can be connected and disconnected from each other. Figure 1 The diagram shows the disconnected state of the insertion rod 40 and the seat rod 60. Figure 3 The enlarged view shows the connection state of the insert bar 40 and the seat bar 60 within the chain tooth guide paths 17a and 17b of the upper and lower pull heads 10A and 10B.

[0136] like Figure 1 As shown, the lower end of the insert bar 40 is positioned below the zipper tooth 70 on the inner edge of the first zipper tooth belt 3A in the left-right direction, forming a slender rod shape along the first belt 5a. In order to facilitate insertion from the obliquely upward relative to the zipper tooth guides 17a and 17b of the upper and lower zipper pulls 10A and 10B, the upper and lower ends of the insert bar 40 are bent to the left (opposite to the base bar 60), and the insert bar 40 as a whole becomes arc-shaped when viewed from the back of the watch.

[0137] Figure 4 This is a diagram showing the first zipper tooth with insert bar viewed from the side. Figure 5 This is a diagram showing the first zipper tooth with insert bar viewed from the back side. Figure 6 This is a diagram showing the first zipper tooth with insert bar viewed from the inside (right) side in a left-right direction.

[0138] like Figures 4-6 As shown, the insert 40 has a surface 40A and a back surface 40B that are generally flat, left and right inner sides 40C (sides on the left and right center sides of the zipper 1) and left and right outer sides 40D, and an upper side 40E and a lower side 40F. That is, the insert 40 of this embodiment has: a back surface 40B that is a first back surface facing the back direction; a surface 40A that is a second back surface facing the opposite direction to the back surface 40B; an upper side 40E that is a first upper and lower surface facing upward; and a lower side 40F that is a second upper and lower surface facing the opposite direction to the upper side 40E.

[0139] The left and right outer sides 40D of the insert bar 40 are the parts that allow the flanges (front wing plate flanges and back wing plate flanges 21a and 21b) of the upper and lower pull heads 10A and 10B to slide in contact when the insert bar 40 is inserted into the chain tooth guides 17a and 17b of the upper and lower pull heads 10A and 10B.

[0140] A recessed locking recess 41 is formed on the upper part of the back surface 40B of the left and right inner side surfaces 40C of the insertion rod 40. This locking recess 41 is used for, for example... Figure 2 and Figure 3 When the insert rod 40 is inserted into the chain tooth guide 17a, 17b of the lower pull heads 10A, 10B located at the bottom, it engages with the locking protrusion 61 of the seat rod 60 described later, causing the insert rod 40 to stop at the bottom.

[0141] On the upper part of the left and right inner sides 40C of the insert rod 40, on the surface 40A of the locking recess 41, a bulge 42 protruding in the left and right directions is formed. The bulge 42 is roughly triangular in shape when viewed from the back. The left and right inner sides 42a of the bulge 42 are tapered in shape, with their width gradually increasing upwards. Thus, the left and right inner sides 42a of the bulge 42 function as a guide surface that slides into contact with the guide post 15b of the pull-down head 10B when the pull-down head 10B slides upwards from its lowest point, thereby opening the insert rod 40 in the left direction.

[0142] A meshing protrusion 43 is formed on the inner side of the upper side 40E of the insert bar 40 in the left-right direction, which meshes with the meshing head 83 of the first zipper tooth 80 located at the lowermost end of the second zipper tooth belt 3B.

[0143] A lower end inclined surface 44 is formed at the lower end of the surface 40A of the insertion rod 40, such that the surface 40A gradually slopes towards the back surface 40B as it faces downward. When the insertion rod 40 is inserted into the pull-up heads 10A and 10B, the foremost lower end inclined surface 44 functions as a guide surface, thus enabling smooth insertion. The surface-back dimension of the lower portion 48 of the insertion rod 40 decreases as it approaches the base rod 60 (inner left-right direction). Here, the lower portion 48 of the insertion rod 40 refers to the portion located below the insertion rod protrusion 45 described later. By cutting out the inner left-right direction (right side) of the surface portion 48 of the insertion rod 40 to provide a surface inclined surface 47, the surface-back dimension of the lower portion of the insertion rod 40 decreases as it approaches the base rod 60. Therefore, when the insertion rod 40 is inserted from the lower portion 48 side, the lower portion 48 is less likely to come into contact with the base rod protrusion 65 described later, thus ensuring good insertion of the insertion rod 40.

[0144] like Figure 1As shown, the lower end of the base bar 60 is positioned below the chain teeth 80 on the inner edge of the second zipper tooth strip 3B in the left-right direction, forming a slender rod shape along the second strip 5b. In order to facilitate the insertion of the chain tooth guides 17a and 17b of the upper and lower zipper pulls 10A and 10B from an obliquely upward position relative to the base bar 60, the upper and lower ends of the base bar 60 are bent to the right (opposite to the insertion bar 40), forming an arc shape as a whole.

[0145] like Figure 2 and Figure 3 As shown, the base bar 60 can position the pull-down head 10B at the lowest end of the second zipper tooth chain 3B, and can connect the insert bar 40, which is inserted into the tooth guides 17a and 17b of the upper and lower pull heads 10A and 10B located at the lowest end, to the lowest end for positioning. Furthermore, the pull-down head 10B is positioned on the side of the insert bar 40 and the base bar 60 compared to the upper pull head 10A. Additionally, the upper and lower pull heads 10A and 10B are arranged with their rear openings 18a and 18b facing each other.

[0146] Figure 7 This is a diagram showing the second zipper tooth strap with the seat bar viewed from the side. Figure 8 This is a diagram showing the second zipper tooth strap with the seat bar viewed from the back side. Figure 9 This is a diagram showing the second zipper tooth belt with the seat bar viewed from the inside (left side) in the left-right direction.

[0147] like Figures 7-9 As shown, the base bar 60 has a surface 60A and a back surface 60B that are generally flat, left and right inner side surfaces 60C (side surfaces on the left and right center sides of the zipper 1) and left and right outer side surfaces 60D, and an upper side surface 60E and a lower side surface 60F. That is, the base bar 60 of this embodiment has: a surface 60A that is a first back surface facing the watch direction; a back surface 60B that is a second back surface facing the direction opposite to the surface 60A; an upper side surface 60E that is a first upper and lower surface facing upward; and a lower side surface 60F that is a second upper and lower surface facing the direction opposite to the upper side surface 60E.

[0148] The left and right outer sides 60D of the base bar 60 are the parts that allow the flanges (front wing flange and back wing flange 21a, 21b) of the upper and lower pull heads 10A and 10B to slide into contact when the upper and lower pull heads 10A and 10B are slid to the lowest position of the end position of the base bar 60.

[0149] Stops 62a and 62b protruding toward the back of the watch are provided at the lower ends of the surface 60A and back 60B of the base rod 60, respectively. These stops 62a and 62b abut against the watch wing plate 13b and back wing plate 14b of the pull-down head 10B to prevent the pull-down head 10B from falling off from below.

[0150] The left and right inner sides 60C of the base bar 60 are located on the opposite side to the left and right outer sides 60D and opposite to the insert bar 40. On the back side 60B of the upper end of the left and right inner sides 60C, a triangular locking protrusion 61 protrudes to the left (towards the insert bar 40) when viewed from the back of the watch. The locking protrusion 61 is used to engage with the locking recess 41 of the insert bar 40 when the insert bar 40 is inserted into the chain tooth guides 17a and 17b of the lowermost pull tabs 10A and 10B, thereby stopping the insert bar 40 at the lowermost end. Therefore, the locking protrusion 61 of the base bar 60 and the locking recess 41 of the insert bar 40 have similar shapes to each other.

[0151] The inclined surface 61a opposite to the insert bar 40 has a shape in which the width of the locking protrusion 61 gradually increases upward. Moreover, the inclined surface 61a functions as an inclined guide surface that slides into contact with the guide post 15b of the pull-down head 10B when the pull-down head 10B slides upward from the bottom end, thereby opening the seat bar 60 to the right.

[0152] Next, the insertion protrusion 45 of the insertion rod 40 and the seat protrusion 65 of the seat rod 60 will be described.

[0153] like Figures 4-6 As shown, the insert rod 40 has insert rod protrusions 45 protruding towards the base rod 60 on its left and right inner sides 40C. The insert rod protrusions 45 are provided on the surface 40A side of the left and right inner sides 40C, but not on the back side 40B side. Therefore, when the insert rod 40 is inserted into the pull-up and pull-down heads 10A and 10B, the insert rod protrusions 45 will not interfere with the locking protrusions 61 provided on the back side 60B side at the upper end of the base rod 60.

[0154] On the insert 40, a receiving portion 49 is provided at a position above the insert protrusion 45, capable of accommodating the seat protrusion 65. In this embodiment, the receiving portion 49 is provided in the portion on the surface 40A side of the left and right inner side surfaces 40C, in a range above the insert protrusion 45 and below the bulge 42. Figure 3 As shown, when the insertion of the insertion rod 40 is completed, after the insertion rod protrusion 45 passes over the seat rod protrusion 65, the seat rod protrusion 65 is received in the receiving portion 49 of the insertion rod 40. In the illustrated example, the receiving portion 49 is generally planar, but the shape of the receiving portion 49 is not particularly limited as long as it can substantially receive the seat rod protrusion 65; for example, it can also be concave.

[0155] like Figures 7-9 As shown, the left and right inner sides 60C of the base rod 60 are provided with base rod protrusions 65 that protrude toward the insertion rod 40. The base rod protrusions 65 are located on the surface 60A side of the left and right inner sides 60C.

[0156] Since the insertion protrusion 45 is located on the surface 40A side of the insertion rod 40 as described above, the seat protrusion 65 is also located on the surface 60A side. Furthermore, when the insertion rod 40 is inserted, the insertion protrusion 45 and the seat protrusion 65 overlap at least partially when viewed from the vertical direction, which is the insertion / removal direction of the insertion rod 40. Therefore, when the insertion rod 40 is inserted, the insertion protrusion 45 contacts the seat protrusion 65. In addition, the insertion protrusion 45 and the seat protrusion 65 press against each other in both the vertical and horizontal directions, thus they never overlap in the back view (they do not overlap when viewed from the back view).

[0157] also, Figure 3 The image shows the completed insertion state of the insertion rod 40. The insertion process of the insertion rod 40 by pulling up and down the heads 10A and 10B will be referred to Figure 2 and Figure 3 The following will describe the situation. In this fully inserted state, the top of the seat bar protrusion 65 is positioned vertically at the same location as a portion of the straight flange portions 21c and 21d of the upper and lower pull heads 10A and 10B. The top of the seat bar protrusion 65 is positioned at the narrowest straight portion of the chain guides 17a and 17b, thus ensuring reliable contact between the insert protrusion 45 and the seat bar protrusion 65, resulting in a click-like feel. Furthermore, while obtaining a click-like feel requires the seat bar protrusion 65 to be sized to reliably contact the insert protrusion 45, since the top of the seat bar protrusion 65 is positioned at the narrowest straight portion of the chain guides 17a and 17b, it also has the advantage that the size of the seat bar protrusion 65 does not need to be increased beyond what is necessary.

[0158] Next, the chain teeth 70 and 80 will be described. Chain teeth 70 and 80 are installed by injection molding, for example, using synthetic resins such as polyamide, polyoxymethylene, polypropylene, and polybutylene terephthalate, on the inner edges 6a and 6b in the width direction of the first and second strips 5a and 5b. The thickness dimension of the inner edges 6a and 6b in the width direction of the first and second strips 5a and 5b is larger than that of other parts, making it difficult for the installed chain teeth 70 and 80 to detach from the zipper tape 20.

[0159] like Figures 4-9 As shown, the chain teeth 70 and 80 include: main body portions 71 and 81, which are mounted on the inner edges 6a and 6b of the first and second belts 5a and 5b in the width direction; engagement heads 73 and 83, which extend from the main body portions 71 and 81 toward the inner side in the width direction (the first and second belts 5a and 5b on opposite sides) and engage with the chain teeth 70 and 80 on opposite sides; necks 75 and 85, which are formed between the main body portions 71 and 81 and the engagement heads 73 and 83, and are narrower in the vertical direction compared to the engagement heads 73 and 83; and a pair of shoulders 77 and 87, which extend from the necks 75 and 85 in the vertical direction.

[0160] The vertical dimensions of the necks 75 and 85 are smaller than the vertical dimensions of the meshing heads 73 and 83 and the main body portions 71 and 81. When the left and right chain teeth 70 and 80 are engaged, the meshing heads 73 and 83 of one side of the chain teeth 70 and 80 are positioned between the necks 75 and 85 of two adjacent chain teeth 70 and 80 in the vertical direction on the other side, and mesh with them.

[0161] The dimensions of the main body parts 71 and 81 in the back direction are set to be slightly smaller than the dimensions of the chain tooth guides 17a and 17b of the upper and lower pull heads 10A and 10B in the back direction. The upper and lower pull heads 10A and 10B move while sliding in contact with the back of the main body parts 71 and 81.

[0162] like Figures 4-6 As shown, the main body 71 of the chain tooth 70 constituting the first chain band 3A includes a surface 71A, a back surface 71B, an upper side surface 71C, and a lower side surface 71D. That is, the chain tooth 70 of this embodiment has: a back surface 71B as a first back surface facing the back direction; a surface 71A as a second back surface facing the opposite direction to the back surface 71B; an upper side surface 71C as a first upper and lower surface facing upward; and a lower side surface 71D as a second upper and lower surface facing the opposite direction to the upper side surface 71C.

[0163] At least one of the plurality of chain teeth 70 constituting the first chain band 3A has a first protrusion 72 extending from the back side 71B (first face back side) of the upper side 71C (first upper and lower surface) toward the adjacent chain tooth 70 (i.e., toward upward). Here, when the nth chain tooth 70 counting from the bottom (n is a natural number) is referred to as the nth chain tooth, the first and second chain teeth have the first protrusion 72. Moreover, the chain teeth 70 after the third chain tooth do not have the first protrusion 72.

[0164] The first protrusion 72 has a tapered shape at the top, which is deformed in both the left-right direction and the back-side direction as it faces upward, and the top end has rounded corners. In addition, the first protrusion 72 contacts the inner edge 6a of the first band 5a in the width direction in the back-side direction.

[0165] The main body portion 71 of the chain tooth 70 adjacent to the chain tooth 70 having the first protrusion 72 has a second protrusion 76 extending from the surface 71A (second back surface) of the lower side surface 71D (second upper side surface) toward the chain tooth 70 having the first protrusion 72 (i.e., downward). In this embodiment, the chain teeth 70 having the second protrusion 76 are the first to third chain teeth. Moreover, the chain teeth 70 after the fourth chain tooth do not have the second protrusion 76.

[0166] The second protrusion 76 has a tapering shape at the top, which decreases in both the left-right direction and the back-side direction as it faces downwards, and the top end has rounded corners. Furthermore, the second protrusion 76 contacts the inner edge 6a of the first band 5a in the width direction in the back-side direction.

[0167] like Figure 6 As shown, the first protrusion 72 and the second protrusion 76 are configured to overlap when viewed from the back of the zipper, with the inner edge 6a of the first zipper tooth 5a sandwiched between these first protrusions 72 and second protrusions 76 in the width direction. By arranging the first protrusions 72 and second protrusions 76 of adjacent zipper teeth 70, 70 in such an overlapping position when viewed from the back of the zipper, the rigidity of the first zipper tooth zipper strip 3A in the back of the zipper is increased, making it less prone to bending. Therefore, the insertion of the insert 40 becomes easier during the opening operation, improving the operability of the zipper.

[0168] The main body portion 71 of the chain tooth 70 having a first protrusion 72 has a first recess 74, which extends from the surface 71A (second back surface) of the upper side 71C (first upper and lower surface) toward the adjacent chain tooth 70 having a second protrusion 76 (i.e., toward downwards). Here, the chain teeth 70 having the first recess 74 are the first and second chain teeth. Moreover, the chain teeth 70 after the third chain tooth do not have the first recess 74.

[0169] The first recess 74 has a shape corresponding to the second protrusion 76, so as to accommodate the second protrusion 76. Specifically, the first recess 74 is tapered at the top, decreasing in both the left-right and front-back directions as it faces downwards, and has rounded corners at the bottom. A slight gap exists between the first recess 74 and the second protrusion 76 in the vertical direction.

[0170] The main body portion 71 of the chain tooth 70 having the second protrusion 76 has a second recess 78, which extends from the back side 71B (first back side) of the lower side surface 71D (second upper side surface) toward the chain tooth 70 having the first protrusion 72 (i.e., toward upward). In this embodiment, the chain teeth 70 having the second recess 78 are the first to third chain teeth. Moreover, the chain teeth 70 after the fourth chain tooth do not have the second recess 78.

[0171] The second recess 78 has a shape corresponding to the first protrusion 72, so as to accommodate the first protrusion 72. Specifically, the second recess 78 is tapered at the top, decreasing in both the left-right and front-back directions as it faces upwards, and has rounded corners at the bottom. A slight gap exists between the second recess 78 and the first protrusion 72 in the vertical direction.

[0172] Because a second recess 78 for receiving the first protrusion 72 and a first recess 74 for receiving the second protrusion 76 are provided, the first protrusion 72 and the second protrusion 76 can be extended in such a way that they enter the main body 71 of the zipper tooth 70, thereby increasing the area of ​​overlap between the first protrusion 72 and the second protrusion 76 in the front and back directions. This further improves the rigidity of the first tooth zipper belt 3A. Consequently, the insertion of the insert 40 becomes easier during the opening operation, improving the operability of the zipper.

[0173] Furthermore, as described above, there are slight gaps in the vertical direction between the first recess 74 and the second protrusion 76, and between the second recess 78 and the first protrusion 72, and adjacent chain teeth 70, 70 are not connected to each other and are separated. In addition, assuming that adjacent chain teeth 70, 70 are connected to each other and integrated, there is a possibility that the rigidity becomes too high and the flexibility of the first chain band 3A is lost.

[0174] like Figures 4-6 As shown, the insert 40 constituting the first tooth chain 3A has a first protrusion 51 extending from the back side 40B (first table back side) of the upper side 40E (first upper and lower surface) toward the adjacent first chain tooth 70 (i.e., upward).

[0175] The first protrusion 51 has a tapered shape that decreases in size in both the left-right direction and the back-side direction as it faces upwards, and the top end has rounded corners. Furthermore, the first protrusion 51 contacts the inner edge 6a of the first band 5a in the width direction in the back-side direction.

[0176] The main body 71 of the first chain tooth 70 adjacent to the insert 40 has a second protrusion 76 extending from the surface 71A (second back side) of the lower side 71D (second upper side) toward the insert 40 with the first protrusion 51 (i.e. downward).

[0177] like Figure 6 As shown, the first protrusion 51 of the insert bar 40 and the second protrusion 76 of the first chain tooth 70 are arranged to overlap when viewed from the back of the zipper, with the inner edge 6a of the first strip 5a in the width direction sandwiched between these first protrusions 51 and second protrusions 76. By arranging the first protrusions 51 and second protrusions 76 of adjacent insert bars 40 and first chain teeth 70 in such an overlapping position when viewed from the back of the zipper, the rigidity around the insert bar 40, which is crucial for insert insertion, is improved, making it less prone to bending. Therefore, inserting the insert bar 40 becomes easier during the opening operation, improving the operability of the zipper.

[0178] The insert 40 has a first recess 52 extending from the surface 40A (second back face) of its upper side 40E (first upper and lower surface) toward the opposite direction (i.e., downward) of the adjacent first chain tooth 70. The first recess 52 has a shape corresponding to the second protrusion 76, capable of accommodating the second protrusion 76 of the first chain tooth 70. Specifically, the first recess 52 is tapered at the top, decreasing in both the left-right and back face directions as it faces downward, and has rounded corners at the bottom. A slight gap exists between the first recess 52 and the second protrusion 76 in the vertical direction.

[0179] The main body 71 of the first chain tooth 70 adjacent to the insert 40 has a second recess 78 extending from the back side 71B (first table back side) of the lower side 71D (second upper side) toward the insert 40 having the first protrusion 51 in the opposite direction (i.e., toward upward).

[0180] Because the first recess 78 of the first tooth 70, which accommodates the first protrusion 51 of the insert bar 40, and the first recess 52 of the insert bar 40, which accommodates the second protrusion 76 of the first tooth 70, are provided, the first protrusion 51 and the second protrusion 76 can be extended to enter the main body 71 of the first tooth 70 or the insert bar 40, thereby increasing the overlapping area of ​​the first protrusion 51 and the second protrusion 76 in the front and back directions. This further improves the rigidity of the first tooth chain band 3A around the insert bar 40, which is crucial when the insert bar is inserted. Therefore, insertion of the insert bar 40 becomes easier during the opening operation, improving the operability of the zipper.

[0181] like Figures 7-9 As shown, the main body 81 of the chain tooth 80 constituting the second chain band 3B includes a surface 81A, a back surface 81B, an upper side surface 81C, and a lower side surface 81D. That is, the chain tooth 80 of this embodiment has: a surface 81A as a first back surface facing the watch direction; a back surface 81B as a second back surface facing the opposite direction to the surface 81A; an upper side surface 81C as a first upper and lower surface facing upward; and a lower side surface 81D as a second upper and lower surface facing the opposite direction to the upper side surface 81C.

[0182] At least one of the plurality of chain teeth 80 constituting the second chain band 3B has a first protrusion 82 extending from the surface 81A (first back surface) of the upper side 81C (first upper and lower surface) toward the adjacent chain tooth 80 (i.e., upward). Here, when the nth chain tooth 80 counting from the bottom (n is a natural number) is referred to as the nth chain tooth, the first to second chain teeth have the first protrusion 82. Moreover, the chain teeth 80 after the third chain tooth do not have the first protrusion 82.

[0183] The first protrusion 82 has a tapered shape that decreases in size in both the left-right direction and the back-side direction as it faces upwards, and the top end has rounded corners. Furthermore, the first protrusion 82 contacts the inner edge 6b of the second band 5b in the width direction in the back-side direction.

[0184] The main body portion 81 of the chain tooth 80 adjacent to the chain tooth 80 having the first protrusion 82 has a second protrusion 86 extending from the back side 81B (second back side) of the lower side surface 81D (second upper side surface) toward the chain tooth 80 having the first protrusion 82 (i.e., downward). In this embodiment, the chain teeth 80 having the second protrusion 86 are the first to third chain teeth. Moreover, the chain teeth 80 after the fourth chain tooth do not have the second protrusion 86.

[0185] The second protrusion 86 has a tapered shape at the top, which decreases in both the left-right direction and the back-side direction as it faces downwards, and the top has rounded corners. Furthermore, the second protrusion 86 contacts the inner edge 6b of the second band 5b in the width direction in the back-side direction.

[0186] like Figure 9 As shown, the first protrusion 82 and the second protrusion 86 are configured to overlap when viewed from the back of the zipper, with the inner edge 6b of the second zipper tooth 5b sandwiched between them in the width direction. By arranging the first protrusion 82 and the second protrusion 86 of adjacent zipper teeth 80, 80 in such an overlapping position when viewed from the back of the zipper, the rigidity of the second zipper tooth zipper band 3B in the back of the zipper is increased, making it less prone to bending. Therefore, the insertion of the insert 40 becomes easier during the opening operation, improving the operability of the zipper.

[0187] The main body 81 of the chain tooth 80 having the first protrusion 82 has a first recess 84 extending from the back side 81B (second back side) of the upper side surface 81C (first upper and lower surface) toward the adjacent chain tooth 80 having the second protrusion 86 in the opposite direction (i.e., toward downward). Here, the chain teeth 80 having the first recess 84 are the first and second chain teeth. Moreover, the chain teeth 80 after the third chain tooth do not have the first recess 84.

[0188] The first recess 84 has a shape corresponding to the second protrusion 86, so as to accommodate the second protrusion 86. Specifically, the first recess 84 is tapered at the top, decreasing in both the left-right and front-back directions as it faces downwards, and has rounded corners at the bottom. A slight gap exists between the first recess 84 and the second protrusion 86 in the vertical direction.

[0189] The main body 81 of the chain tooth 80 having the second protrusion 86 has a second recess 88 extending from the surface 81A (first back face) of the lower side surface 81D (second upper side surface) toward the chain tooth 80 having the first protrusion 82 in the opposite direction (i.e., toward upward). In this embodiment, the chain teeth 80 having the second recess 88 are the first to third chain teeth. Moreover, the chain teeth 80 after the fourth chain tooth do not have the second recess 88.

[0190] The second recess 88 has a shape corresponding to the first protrusion 82, so as to accommodate the first protrusion 82. Specifically, the second recess 88 is tapered at the top, decreasing in both the left-right and front-back directions as it faces upwards, and has rounded corners at the bottom. A slight gap exists between the second recess 88 and the first protrusion 82 in the vertical direction.

[0191] Because a second recess 88 for receiving the first protrusion 82 and a first recess 84 for receiving the second protrusion 86 are provided, the first protrusion 82 and the second protrusion 86 can be extended in such a way that they enter the main body 81 of the zipper tooth 80, thereby increasing the area of ​​overlap between the first protrusion 82 and the second protrusion 86 in the front and back directions. This further improves the rigidity of the second tooth zipper belt 3B. Consequently, the insertion of the insert 40 becomes easier during the opening operation, improving the operability of the zipper.

[0192] Furthermore, as described above, there are slight gaps in the vertical direction between the first recess 84 and the second protrusion 86, and between the second recess 88 and the first protrusion 82, and adjacent chain teeth 80, 80 are not connected to each other and are separated. In addition, assuming that adjacent chain teeth 80, 80 are connected to each other and integrated, there is a possibility that the rigidity becomes too high and the flexibility of the second chain band 3B is lost.

[0193] like Figures 7-9 As shown, the base bar 60 constituting the second chain strap 3B has a first protrusion 66 extending from the surface 60A (first back face) of the upper side 60E (first upper and lower surface) toward the adjacent first chain tooth 80 (i.e., upward). The first protrusion 66 has a tapered shape that decreases in both the left-right direction and the back face direction as it faces upward, and the top end has rounded corners. In addition, the first protrusion 66 contacts the inner edge 6b of the second strap 5b in the width direction in the back face direction.

[0194] The main body 81 of the first chain tooth 80 adjacent to the base bar 60 has a second protrusion 86 extending from the back side 60B (second back side of the table) of the lower side 60F (second upper side) toward the base bar 60 with the first protrusion 66 (i.e. downward).

[0195] like Figure 9As shown, the first protrusion 66 of the base bar 60 and the second protrusion 86 of the first chain tooth 80 are arranged to overlap when viewed from the back side, with the inner edge 6b of the second band 5b sandwiched between these first protrusions 66 and second protrusions 86 in the width direction. By arranging the first protrusions 66 and second protrusions 86 of adjacent base bars 60 and first chain teeth 80 in such an overlapping position when viewed from the back side, the rigidity of the base bar 60 periphery, which is crucial for the insertion of the zipper bar, is improved, making it less prone to bending. Therefore, the insertion of the zipper bar 40 becomes easier during the opening operation, improving the operability of the zipper.

[0196] The seat bar 60 has a first recess 67 extending from the back side 60B (second back side) of the upper side 60E (first upper and lower surface) toward the opposite direction (i.e. downward) of the adjacent first chain tooth 80.

[0197] The first recess 67 has a shape corresponding to the second protrusion 86, so as to accommodate the second protrusion 86. Specifically, the first recess 67 is tapered at the top, decreasing in both the left-right and front-back directions as it faces downwards, and has rounded corners at the bottom. A slight gap exists between the first recess 67 and the second protrusion 86 in the vertical direction.

[0198] The main body portion 81 of the first chain tooth 80 adjacent to the base bar 60 has a second recess 88 extending from the surface 81A (first back side) of the lower side 81D (second upper side) toward the direction opposite to the base bar 60 (i.e., toward upward).

[0199] Because the first tooth 80 has a second recess 88 that accommodates the first protrusion 66 of the base bar 60, and a first recess 67 that accommodates the second protrusion 86 of the first tooth 80, the first protrusion 66 and the second protrusion 86 can be extended to enter the main body 81 of the first tooth 80 or the base bar 60, increasing the overlapping area of ​​the first protrusion 66 and the second protrusion 86 in the front and back directions. This further improves the rigidity of the second tooth chain band 3B. Therefore, the insertion of the insert bar 40 becomes easier during the opening operation, improving the operability of the zipper.

[0200] Next, refer to Figure 2 and Figure 3 This will illustrate the connection between the insert 40 and the base 60.

[0201] When connecting the insert 40 to the base 60, firstly, as follows: Figure 2As shown, pull down the upper and lower zipper pulls 10A and 10B to their lowest positions. In this state, the base bar 60 is located within the zipper tooth guides 17a and 17b of the upper and lower zipper pulls 10A and 10B. Furthermore, the top of the base bar protrusion 65 protrudes towards the insertion bar 40 relative to the left-right center of the zipper 1. In this state, with the lower side 40F as the front, the insertion bar 40 is inserted from the shoulder opening 19a of the upper zipper pull 10A.

[0202] If the insert rod 40 is continued to be inserted, the insert rod protrusion 45 contacts the seat rod protrusion 65, which protrudes towards the insert rod 40 relative to the center in the left-right direction. Here, as described above, the seat rod protrusion 65 protrudes towards the insert rod 40 relative to the center in the left-right direction of the zipper 1. Therefore, compared to the case where the insert rod protrusion 45 protrudes towards the seat rod 60 relative to the center in the left-right direction of the zipper 1, the insertion and removal of the insert rod 40 can be performed smoothly. For example, if the insert rod protrusion 45 protrudes towards the seat rod 60 relative to the center in the left-right direction of the zipper 1, the insert rod protrusion 45 needs to be formed relatively large, therefore, during the insertion and removal of the insert rod 40, there is a possibility of it getting caught on the guide post 15a of the upper zipper 10A, etc. Furthermore, in Figure 3 In the inserted state shown, the top of the insertion protrusion 45 is located on the side of the insertion protrusion 40 relative to the left-right center of the zipper 1. This allows for smooth insertion and removal of the insertion protrusion 40. Furthermore, the left-right width of the seat protrusion 65 is greater than that of the insertion protrusion 45. With this structure, compared to a case where the insertion protrusion 45 protrudes significantly more laterally than the seat protrusion 65, the insertion and removal of the insertion protrusion 40 can be performed more smoothly.

[0203] If from Figure 2 If the state continues to be further modified by inserting the plug 40, then as follows: Figure 3 As shown, the protrusion 45 of the insert rod passes over the protrusion 65 of the base rod, and the contact state is released or reduced, transitioning to the state where the protrusion 65 of the base rod is stored in the storage portion 49. Therefore, through the resistance or sound of the protrusion 45 of the insert rod passing over the protrusion 65 of the base rod, the user can obtain an insertion feeling or click, like a quick insertion, and can properly identify that the insert rod 40 has been inserted into the base rod 60. Furthermore, in the illustrated example, the state where the protrusion 65 of the base rod is stored in the storage portion 49 is roughly equivalent to the state where the insert rod 40 is inserted to its lowest point. The protrusion 45 of the insert rod and the protrusion 65 of the base rod never coincide in the direction of the back of the watch face from the beginning of the insertion of the insert rod 40 to the state of insertion completion. That is to say, the protrusion 45 of the insert rod and the protrusion 65 of the base rod can reliably push against each other in the vertical or horizontal direction to obtain a click feeling.

[0204] As described above, in this embodiment, the first protrusions 72 and 76 of adjacent chain teeth 70, the first protrusions 82 and 86 of adjacent chain teeth 80, the first protrusions 51 and 76 of adjacent insert bars 40 and first chain teeth 70, and the first protrusions 66 and 86 of adjacent seat bars 60 and first chain teeth 80 are respectively arranged in overlapping positions when viewed from the back side. This increases the rigidity around the insert bars 40 and seat bars 60. Therefore, the first and second chain straps 3A and 3B are difficult to bend within the upper and lower pull tabs 10A and 10B, thus maintaining a straight shape.

[0205] Therefore, as Figure 3 As shown, when the insert 40 is inserted into the upper and lower zipper pulls 10A and 10B, if the first and second zipper belts 3A and 3B are to maintain a straight shape, stresses Fa and Fb are generated towards the center and upward of the zipper 1 in the left and right directions. These stresses Fa and Fb act on the guide post 15a of the upper zipper pull 10A. The upper zipper pull 10A, which is subjected to stresses Fa and Fb, moves upward. Figure 3 The image shows the state where the pull-up head 10A has moved upward a distance a.

[0206] By simply inserting the insert bar 40 as described above, the pull-up head 10A automatically rises to a position a distance 'a' away from the pull-down head 10B. Therefore, the engagement protrusion 43 of the insert bar 40 is approximately engaged with the engagement head 83 of the first chain tooth 80 at the lowermost end of the second chain belt 3B. By guiding the engagement of the insert bar 40 with the first chain tooth 80 during insertion, the pull-up head 10A can be smoothly activated subsequently, improving operability.

[0207] Furthermore, from the viewpoint of improving insertion performance by increasing rigidity and improving the startability of the upper pull head 10A by increasing stresses Fa and Fb, it is considered to provide first protrusions 72, 82 and second protrusions 76, 86 on all the teeth 70, 80 of the first and second toothed chain belts 3A, 3B. However, in such a structure, the flexibility of the first and second toothed chain belts 3A, 3B is compromised, raising concerns about extremely poor operability.

[0208] Therefore, in this embodiment, in order to achieve both flexibility and operability of the first and second toothed chain belts 3A and 3B, the first protrusion 72 and 82 and the second protrusion 76 and 86 are provided only on the chain teeth 70 and 80 near the insert bar 40 or the seat bar 60.

[0209] More specifically, the preferred structure is as follows: when n is set to a natural number satisfying 2≤n≤5, and when the nth chain tooth 70 or 80 from the bottom is referred to as the nth chain tooth 70 or 80, the first chain tooth 70 or 80 to the (n-1)th chain tooth 70 or 80 from the bottom has a first protrusion 72 or 82 and a first concave portion 74 or 84 on the upper side surface 71C or 81C, and the first chain tooth 70 or 80 to the nth chain tooth 70 or 80 are on the lower side... Surfaces 71D and 81D have second protrusions 76 and 86 and second recesses 78 and 88. The nth and subsequent chain teeth 70 and 80 from the bottom do not have first protrusions 72 and 82 and first recesses 74 and 84 on the upper side surface 71C and 81C. The (n+1)th and subsequent chain teeth 70 and 80 from the bottom do not have second protrusions 76 and 86 and second recesses 78 and 88 on the lower side surface 71D and 81D.

[0210] In the above embodiment, n = 3, but n can also be any natural number within the range of 2 ≤ n ≤ 5. By setting it to 2 ≤ n ≤ 5, the flexibility and operability of the first and second chain straps 3A and 3B can be achieved simultaneously. Furthermore, to improve operability, it is sufficient that the periphery held by fingers is difficult to bend when the insert is inserted; even if other areas are difficult to bend, the contribution to improving operability is not significant. From this perspective, it is also preferable to set it to 2 ≤ n ≤ 5. Moreover, it is more preferable to satisfy 2 ≤ n ≤ 3. In order to minimize changes in appearance while improving operability, it is preferable to set n ≤ 3 to the extent that the chain teeth 70 and 80 with the first protrusions 72 and 82 and the second protrusions 76 and 86 are retracted into the pull-down head 10B when the opening part is operated.

[0211] [Second Implementation]

[0212] The zipper tooth tape of the first embodiment described above is used for double-ended zippers, but the zipper tooth tape of the present invention is not limited to double-ended zippers, and can also be used for example for straight-opening zippers. Figures 10-12 The first zipper tooth tape 3A for a front-opening zipper is shown in the figure. Figures 13-15 The image shows the second zipper tooth strip 3B used for the front-opening zipper.

[0213] Figure 10 This is a diagram showing the first zipper tooth with insert bar viewed from the side. Figure 11 This is a diagram showing the first zipper tooth with insert bar viewed from the back side. Figure 12 This is a diagram showing the first zipper tooth with insert bar viewed from the inside (right) side in a left-right direction. Figure 13 This is a diagram showing the second zipper tooth strap with the seat bar viewed from the side. Figure 14 This is a diagram showing the second zipper tooth strap with the seat bar viewed from the back side. Figure 15This is a diagram showing the second zipper tooth belt with the seat bar viewed from the inside (left side) in the left-right direction.

[0214] like Figures 10-12 As shown, the structure of the main parts of the insert bar 40 and the plurality of chain teeth 70 constituting the first zipper chain belt 3A in the second embodiment is similar to... Figures 4-6 The first embodiment shown is largely the same, therefore the same reference numerals are used, thus simplifying or omitting its description. Additionally, as... Figures 13-15 As shown, the structure of the main parts of the seat bar 60 and the plurality of chain teeth 80 constituting the second zipper chain belt 3B in the second embodiment is similar to that of the second embodiment. Figures 7-9 The first embodiment shown is substantially the same, therefore the same reference numerals are used, thereby simplifying or omitting its description.

[0215] like Figures 13-15 As shown, in the second embodiment, the second zipper tooth strip 3B has a socket 90 at the lower end of its inner edge in the width direction. The socket 90 has: a socket body 91, which has a plug hole 91a in its left half for inserting and removing the plug 40 in the vertical direction; and a base bar 60, which protrudes upward from the right half of the upper surface of the socket body 91. The lower side 60F of the base bar 60 is connected to the socket body 91, and the base bar 60 and the socket body 91 are integrated. The connection is achieved by inserting the plug 40 into the plug hole 91a of the socket body 91, and the connection is released by pulling the plug 40 out of the plug hole 91a of the socket body 91.

[0216] like Figures 10-12 As shown, the positions of the first protrusion 72, the first recess 74, the second protrusion 76, and the second recess 78 of the chain tooth 70 constituting the first zipper chain band 3A within the main body 71 are as follows: Figures 4-6 The first embodiment shown is the same, so the description is omitted.

[0217] On the other hand, such as Figures 13-15 As shown, in the main body 81 of the chain tooth 80 constituting the second zipper tooth belt 3B, the positions of the first protrusion 82, the first recess 84, the second protrusion 86, and the second recess 88 are as follows: Figures 7-9 The first embodiment shown is flipped in the reverse direction, so it will be described below.

[0218] like Figures 13-15 As shown, the main body 81 of the chain tooth 80 constituting the second chain band 3B has: a back surface 81B as a first back surface facing the back direction; a surface 81A as a second back surface facing the opposite direction to the back surface 81B; an upper side surface 81C as a first upper and lower surface facing upward; and a lower side surface 81D as a second upper and lower surface facing the opposite direction to the upper side surface 81C.

[0219] Furthermore, the first to second chain teeth 80, counting from the bottom, have a first protrusion 82 on the back surface 81B (back surface of the first watch) of the upper side surface 81C (first upper and lower surface), and a first recess 84 on the surface 81A (back surface of the second watch) of the upper side surface 81C. Additionally, the first to third chain teeth 80 have a second protrusion 86 on the surface 81A (back surface of the second watch) of the lower side surface 81D (second upper and lower surface), and a second recess 88 on the back surface 81B (back surface of the first watch) of the lower side surface 81D.

[0220] Even in the first and second zipper teeth 3A and 3B of such a second embodiment, the same effect as in the first embodiment can be achieved.

[0221] Various embodiments have been described above with reference to the accompanying drawings, but the present invention is undoubtedly not limited to such examples. It will be apparent to those skilled in the art that various modifications or alterations will occur within the scope of the claims, and these will also fall within the technical scope of the present invention. Furthermore, the constituent elements of the above embodiments can be combined arbitrarily without departing from the spirit of the invention.

[0222] In the above embodiment, the first chain teeth 70, 80 to the second chain teeth 70, 80 from the bottom have first protrusions 72, 82 and first recesses 74, 84, and the first chain teeth 70, 80 to the third chain teeth 70, 80 have second protrusions 76, 86 and second recesses 78, 88. However, the chain teeth 70, 80 with these protrusions and recesses need to be at least two chain teeth 70, 80 that are adjacent in the vertical direction among the plurality of chain teeth 70, 80, and do not need to be the chain teeth 70, 80 near the lower end of the insert bar 40 and the seat bar 60.

[0223] In addition, in the above-described embodiments, both the chain teeth 70 and the insert bar 40 constituting the first chain belt 3A and the chain teeth 80 and the seat bar 60 constituting the second chain belt 3B are provided with concave and convex portions (concave portions 52, 67, 74, 78, 84, 88 and convex portions 51, 66, 72, 76, 82, 86), but it is also possible to provide concave and convex portions only on one of the first and second chain belts 3A and 3B.

[0224] As stated above, the following matters are disclosed in this specification.

[0225] [1] A zipper tooth tape, comprising:

[0226] Zipper tape (5a, 5b); and

[0227] Multiple zipper teeth (70, 80) are arranged and installed on the inner edge (6a, 6b) of the zipper tape (5a, 5b) in the width direction in the vertical direction.

[0228] The zipper teeth (3A, 3B) are characterized in that,

[0229] The zipper teeth (70, 80) include: a main body (71, 81) mounted on the inner edge (6a, 6b) in the width direction of the zipper tape (5a, 5b); and an engaging head (73, 83) extending from the main body (71, 81) toward the inner side in the width direction.

[0230] The main body portion (71, 81) of the chain teeth (70, 80) has: a first back face (71B, 81A) facing the front or back direction; a second back face (71A, 81B) facing in the opposite direction to the first back face (71B, 81A); a first upper or lower face (71C, 81C) facing upward or downward; and a second upper or lower face (71D, 81D) facing in the opposite direction to the first upper or lower face (71C, 81C).

[0231] The main body portion (71, 81) of one of the chain teeth (70, 80) has a first protrusion (72, 82) that extends from the first back face (71B, 81A) side of the first upper and lower surfaces (71C, 81C) toward the adjacent chain teeth (70, 80).

[0232] The main body portion (71, 81) of the adjacent chain teeth (70, 80) has a second protrusion (76, 86) that extends from the second upper and lower surfaces (71D, 81D) toward the second back surface (71A, 81B) side toward one of the chain teeth (70, 80).

[0233] The first protrusion (72, 82) and the second protrusion (76, 86) overlap when viewed from the back of the watch.

[0234] [2] According to the zipper tooth tape described in [1], wherein,

[0235] The main body portion (71, 81) of one of the chain teeth (70, 80) has a first recess (74, 84), which is recessed from the second back surface (71A, 81B) side of the first upper and lower surfaces (71C, 81C) in a direction opposite to that of the adjacent chain teeth (70, 80).

[0236] The second protrusion (76, 86) can be accommodated in the first recess (74, 84).

[0237] The main body portion (71, 81) of the adjacent chain teeth (70, 80) has a second recess (78, 88), which is recessed from the first back face (71B, 81A) side of the second upper and lower surfaces (71D, 81D) in a direction opposite to that of one of the chain teeth (70, 80).

[0238] The first protrusion (72, 82) can be accommodated in the second recess (78, 88).

[0239] [3] According to the zipper toothed belt described in [1] or [2], wherein,

[0240] It also includes a plug (40) or a seat (60), which is installed at the lower end of the inner edge (6a, 6b) in the width direction of the zipper tape (5a, 5b).

[0241] The insert (40) or base (60) has: a first back face (40B, 60A) facing the face direction or back direction; a second back face (40A, 60B) facing the opposite direction to the first back face (40B, 60A); a first upper and lower face (71C, 81C) facing upward or downward; and a second upper and lower face (71D, 81D) facing the opposite direction to the first upper and lower face (71C, 81C).

[0242] The insert (40) or the base (60) has a first protrusion (51, 66) that extends from the first back face (40B, 60A) side of the first upper and lower surfaces (71C, 81C) toward the first chain tooth (70, 80) counting from the bottom, i.e., the first chain tooth.

[0243] The first chain tooth adjacent to the insert (40) or the base (60) has a second protrusion (76, 86) that extends from the second upper and lower surfaces (71D, 81D) toward the second back surface (71A, 81B) side toward the insert (40) or the base (60).

[0244] The first protrusion (51, 66) of the insert (40) or the base (60) overlaps with the second protrusion (76, 86) of the first chain tooth (70, 80) when viewed from the back of the watch.

[0245] [4] According to the zipper tooth tape described in [3], wherein,

[0246] The insert (40) or the base (60) has a first recess (52, 67) that is recessed from the second back side (40A, 60B) of the first upper and lower surfaces (71C, 81C) in a direction opposite to the first chain teeth (70, 80).

[0247] The second protrusion (76, 86) of the first chain tooth (70, 80) can be received in the first recess (52, 67) of the insert (40) or the seat (60).

[0248] The main body portion (71, 81) of the first chain tooth (70, 80) has a second recess (78, 88), which is recessed from the side of the first back face (71B, 81A) of the second upper and lower surfaces (71D, 81D) in a direction opposite to the insert (40) or the base (60).

[0249] The first protrusion (51, 66) of the insert (40) or the seat (60) can be received in the second recess (78, 88) of the first chain tooth (70, 80).

[0250] [5] The zipper toothed belt according to any one of [1] to [4], wherein,

[0251] When n is set to a natural number satisfying 2≤n≤5, the nth chain tooth (70, 80) counting from the bottom among the plurality of chain teeth (70, 80) is called the nth chain tooth.

[0252] The first chain tooth to the (n-1)th chain tooth have the first protrusion (72, 82) and the first concave portion (74, 84) on the upper side surface (71C, 81C).

[0253] The first to the nth chain teeth have the second protrusion (76, 86) and the second recess (78, 88) on their lower side surfaces (71D, 81D).

[0254] The nth chain tooth (70, 80) from the bottom in the plurality of chain teeth (70, 80) does not have the first protrusion (72, 82) and the first recess (74, 84) on the upper side surface (71C, 81C).

[0255] The (n+1)th and subsequent chain teeth (70, 80) from the bottom do not have the second protrusion (76, 86) and the second recess (78, 88) on their lower side surfaces (71D, 81D).

Claims

1. A zipper tooth tape, comprising: Zipper tape (5a, 5b); and Multiple chain teeth (70, 80) are arranged and installed on the inner edge (6a, 6b) of the zipper tape (5a, 5b) in the width direction in the vertical direction; The zipper teeth (3A, 3B) are characterized in that, The zipper teeth (70, 80) include: a main body (71, 81) mounted on the inner edge (6a, 6b) in the width direction of the zipper tape (5a, 5b); and an engaging head (73, 83) extending from the main body (71, 81) toward the inner side in the width direction. The main body portion (71, 81) of the chain teeth (70, 80) has: a first back face (71B, 81A) facing the front or back direction; a second back face (71A, 81B) facing in the opposite direction to the first back face (71B, 81A); a first upper or lower face (71C, 81C) facing upward or downward; and a second upper or lower face (71D, 81D) facing in the opposite direction to the first upper or lower face (71C, 81C). The main body portion (71, 81) of one of the chain teeth (70, 80) has a first protrusion (72, 82) that extends from the first back face (71B, 81A) side of the first upper and lower surfaces (71C, 81C) toward the adjacent chain teeth (70, 80). The main body portion (71, 81) of the adjacent chain teeth (70, 80) has a second protrusion (76, 86) that extends from the second upper and lower surfaces (71D, 81D) toward the second back surface (71A, 81B) side toward one of the chain teeth (70, 80). The first protrusion (72, 82) and the second protrusion (76, 86) overlap when viewed from the back of the watch.

2. The zipper tooth tape according to claim 1, characterized in that, The main body portion (71, 81) of one of the chain teeth (70, 80) has a first recess (74, 84), which is recessed from the second back surface (71A, 81B) side of the first upper and lower surfaces (71C, 81C) in a direction opposite to that of the adjacent chain teeth (70, 80). The second protrusion (76, 86) can be accommodated in the first recess (74, 84). The main body portion (71, 81) of the adjacent chain teeth (70, 80) has a second recess (78, 88), which is recessed from the first back face (71B, 81A) side of the second upper and lower surfaces (71D, 81D) in a direction opposite to that of one of the chain teeth (70, 80). The first protrusion (72, 82) can be accommodated in the second recess (78, 88).

3. The zipper tooth tape according to claim 1 or 2, characterized in that, It also includes a plug (40) or a seat (60), which is installed at the lower end of the inner edge (6a, 6b) in the width direction of the zipper tape (5a, 5b). The insert (40) or base (60) has: a first back face (40B, 60A) facing the face direction or back direction; a second back face (40A, 60B) facing the opposite direction to the first back face (40B, 60A); a first upper and lower face (71C, 81C) facing upward or downward; and a second upper and lower face (71D, 81D) facing the opposite direction to the first upper and lower face (71C, 81C). The insert (40) or the base (60) has a first protrusion (51, 66) that extends from the first back face (40B, 60A) side of the first upper and lower surfaces (71C, 81C) toward the first chain tooth (70, 80) counting from the bottom, i.e., the first chain tooth. The first chain tooth adjacent to the insert (40) or the base (60) has a second protrusion (76, 86) that extends from the second upper and lower surfaces (71D, 81D) toward the second back surface (71A, 81B) side toward the insert (40) or the base (60). The first protrusion (51, 66) of the insert (40) or the base (60) overlaps with the second protrusion (76, 86) of the first chain tooth (70, 80) when viewed from the back of the watch.

4. The zipper tooth tape according to claim 3, characterized in that, The insert (40) or the base (60) has a first recess (52, 67) that is recessed from the second back side (40A, 60B) of the first upper and lower surfaces (71C, 81C) in a direction opposite to the first chain teeth (70, 80). The second protrusion (76, 86) of the first chain tooth (70, 80) can be received in the first recess (52, 67) of the insert (40) or the seat (60). The main body portion (71, 81) of the first chain tooth (70, 80) has a second recess (78, 88), which is recessed from the side of the first back face (71B, 81A) of the second upper and lower surfaces (71D, 81D) in a direction opposite to the insert (40) or the base (60). The first protrusion (51, 66) of the insert (40) or the seat (60) can be received in the second recess (78, 88) of the first chain tooth (70, 80).

5. The zipper tooth tape according to any one of claims 1 to 4, characterized in that, When n is set to a natural number satisfying 2≤n≤5, the nth chain tooth (70, 80) counting from the bottom among the plurality of chain teeth (70, 80) is called the nth chain tooth. The first chain tooth to the (n-1)th chain tooth have the first protrusion (72, 82) and the first concave portion (74, 84) on the upper side surface (71C, 81C). The first to the nth chain teeth have the second protrusion (76, 86) and the second recess (78, 88) on their lower side surfaces (71D, 81D). The nth chain tooth (70, 80) from the bottom in the plurality of chain teeth (70, 80) does not have the first protrusion (72, 82) and the first recess (74, 84) on the upper side surface (71C, 81C). The (n+1)th and subsequent chain teeth (70, 80) from the bottom do not have the second protrusion (76, 86) and the second recess (78, 88) on their lower side surfaces (71D, 81D).

Images