Zipper puller and zipper

Abstract

The present invention provides a slider for a zipper and a zipper. In a slider for a zipper and a zipper used in a back side with a tape stop function, the sliding resistance of the slider is reduced as much as possible. The slider for a zipper (3) includes an upper ridge portion (15) extending along the front-rear direction on the lower surface of the upper wing plate (11) of the body (10) on the rear side with respect to the connecting column (13); and a groove portion (11d) guiding the opposite side edge portions of a pair of tapes (4). In addition, a pawl hole (H) is provided in the body, which penetrates the upper wing plate and the upper ridge portion up and down and guides the pawl (32) to be movable up and down. Furthermore, within a range (R) directly beside the pawl hole, the left and right ends of the groove portion are located outward with respect to the left and right ends of the connecting column, and the left and right ends of the upper ridge portion are located inward with respect to the left and right ends of the connecting column. According to this positional relationship, the width of the upper ridge portion is narrowed, the edge portions of the tapes can be accommodated in the groove portion, and the sliding resistance of the slider is reduced.

Description

Technical Field

[0001] This invention relates to a zipper commonly known as a back-side zipper with a stop function and a zipper pull for use with the zipper. Background Technology

[0002] The zipper has a pair of teeth fixed on one side of the tape in the thickness direction. Furthermore, a zipper used on the back side means that, when the buyer observes a product with a zipper installed on the fabric, the teeth are positioned on the back side (lower surface side) of the tape, and the teeth are only visible from the front side between the two tapes.

[0003] Patent Document 1 discloses a zipper for use on the back side and equipped with a stop function. The zipper pull includes: an upper flap; a locking claw disposed on the upper flap; a raised rib extending downward from the center of the width of the lower surface of the upper flap; and a claw hole penetrating the upper flap and the raised rib vertically. The zipper pull causes the claw tip of the locking claw to protrude from the claw hole toward the underside of the raised rib and contact a pair of chain teeth, stopping the zipper pull in place. Furthermore, a groove is formed behind the raised rib, through which the opposite side edges of the zipper tape can pass.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: International Publication No. 2021 / 181632 Summary of the Invention

[0007] The problem the invention aims to solve

[0008] However, when the slider is moved, a pair of chain teeth move inside the slider, thus creating friction between the chain teeth and the slider during this movement. The difficulty in moving the slider due to this friction is called the sliding resistance of the slider. If the sliding resistance is low, the slider can be moved with less force.

[0009] The aforementioned pull head is a pull head with grooves on the lower surface of the upper wing plate that reduces sliding resistance, but research on the reduction of sliding resistance of the pull head is insufficient.

[0010] Incidentally, there is a positional relationship where the opposite side edges of the belt easily come into contact with the protrusions extending from the lower surface of the upper wing plate. Therefore, when contact occurs, this creates sliding resistance. Furthermore, the aforementioned pull handle has a stop function, and claw holes are formed in the protrusions. Therefore, compared to pull handles without a stop function, the width of the protrusions is wider, making it easier for the belt to come into contact, and thus increasing the sliding resistance. Additionally, in the aforementioned pull handle, within the range directly next to the claw holes, the left and right ends of the groove are located inside the left and right ends of the connecting post.

[0011] The present invention was made in consideration of the above-mentioned actual situation, and its purpose is to minimize the sliding resistance of the zipper pull in the zipper pull and zipper with a stop function and used on the back side.

[0012] Solution for solving the problem

[0013] The zipper pull of the present invention is based on opening and closing a pair of zipper teeth, which comprises: a pair of strips facing each other left and right and extending front and back; and a pair of zipper teeth fixed to opposing side edges on the lower surfaces of the pair of strips. Furthermore, the zipper pull of the present invention comprises: a body that guides the pair of zipper teeth to engage and disengage; a stop claw connected to the body on its upper side relative to the internal space of the body and used to stop the position of the body relative to the pair of zipper teeth, wherein a claw at one end of the stop claw descends within the internal space of the body and contacts the pair of zipper teeth; and a pull tab that operates the body and the stop claw. The body includes: upper and lower wing plates opposite each other; a connecting post connecting the upper and lower wing plates at the front; a pair of flanges projecting upward from the left and right side edges of the lower wing plate; an upper bulge rising downward from the lower surface of the upper wing plate and extending in the front-rear direction relative to the connecting post; and claw holes penetrating the upper wing plate and the upper bulge vertically, guiding the claws to move vertically. The upper wing plate has a groove recessed in its lower surface, used to guide the opposing side edges of a pair of straps. The groove has a pair of narrow grooves extending rearward from the left and right sides of the upper bulge. Furthermore, within the area directly beside the claw holes, the left and right ends of the groove are located outward relative to the left and right ends of the connecting post, and the left and right ends of the upper bulge are located inward relative to the left and right ends of the connecting post.

[0014] If the width of the raised section is narrowed, the belt will be difficult to contact, thus reducing the sliding resistance of the pull head. The desired outcome is as follows.

[0015] That is, when viewed from the lower surface of the upper wing plate, the claw hole has a pointed portion that becomes tapered from the left and right sides toward the left and right inward as it moves rearward. Furthermore, in the area rearward from the pointed portion, the upper bulge has a pointed portion that becomes tapered from the left and right sides toward the left and right inward as it moves rearward.

[0016] In addition, to reduce the sliding resistance of the slider, the following is desired.

[0017] That is, within the range of front and back relative to the front end of the claw hole, the upper ridge has a first strip-shaped portion that extends straight back and forth.

[0018] Regardless of whether the upper bulge is symmetrical from left to right. As a specific example, it looks like this.

[0019] That is, the upper bulge is asymmetrical.

[0020] Regardless of the relationship between the left and right centers of the claw hole and the left and right centers of the upper wing plate. As a specific example, it is as follows.

[0021] That is, the left and right centers of the claw hole are offset to the left and right relative to the left and right centers of the upper wing plate.

[0022] When the left and right centers of the claw holes are eccentrically offset to the left and right relative to the left and right centers of the upper wing plate, it doesn't matter whether the claw holes are formed in the area including the left and right centers of the upper wing plate. However, if the claw holes are formed offset from the area including the left and right centers of the upper wing plate in the case of such eccentricity, the upper bulge is significantly eccentrically offset to the left and right relative to the left and right centers of the upper wing plate, and the upper bulge easily contacts the belt on the eccentric side. Therefore, in order to reduce the sliding resistance of the pull head, the following is desirable.

[0023] When the left and right centers of the claw hole are eccentric to the left or right relative to the left and right centers of the upper wing plate, the claw hole is formed in the region including the left and right centers of the upper wing plate.

[0024] Within the range directly next to the claw hole, regardless of the relationship between the widths of the pair of slots, the desired arrangement is as follows, so that the upper ridge and the belt are as difficult to contact as possible on the side opposite to the eccentric side.

[0025] That is, within the range directly next to the claw hole, the width of the groove on the side opposite to the eccentric side of a pair of grooves is wider than the width of the groove on the eccentric side.

[0026] Regardless of the shape of the groove, the desired arrangement is as follows, in order to increase the amount of material that can be accommodated on the opposite side edge of the belt and to make it as difficult as possible for the upper bulge to come into contact with the belt.

[0027] That is, within the range directly next to the rear end of the claw hole, a pair of slots each have a slot bottom with a plane orthogonal to the vertical direction.

[0028] Regardless of the shape of the groove, the desired result is to house the tape within the groove to minimize deformation of the opposite side edges and reduce the sliding resistance of the pull head, as shown below.

[0029] That is, within the range directly next to the claw hole, the left and right sides of the upper ridge are inclined planes relative to the vertical direction, and the inclination angle of the side opposite to the eccentric side is greater than the inclination angle of the side on the eccentric side.

[0030] To improve the durability of the claw, a wider claw is desirable. However, if the claw width is increased, the width of the upper bulge also increases accordingly, thus increasing the sliding resistance of the slider. On the other hand, if, as described in the present invention, the width of the upper bulge is narrower than the width between the left and right ends of the connecting post, the width of the claw hole also narrows accordingly, approaching the width of the claw. If the width of the claw hole is so close to the width of the claw, the claw may collide with the claw hole during its up-and-down movement, hindering movement and increasing the likelihood that the locking (the stopped state of the slider) will become unstable.

[0031] To prevent such a situation, it is desirable to stop the claws and carcass from behaving as follows.

[0032] That is, the stop claw includes: a stop claw body portion, which is connected to a pull tab on its upper side relative to the internal space of the body; and a claw, which extends downward from the stop claw body portion. The body has a pair of side guide portions that guide the stop claw body portion from the left and right sides to enable it to move up and down. The left and right gap formed between the side guide portion on the eccentric side and the stop claw body portion is smaller than the left and right gap formed between the claw and the claw hole on the eccentric side.

[0033] As an example, a pair of side guides look like this.

[0034] That is, the pair of side guides includes: a pair of guide posts that protrude from the upper surface of the upper wing plate on the left and right sides of the claw hole; and a positioning protrusion that extends from the guide post on the eccentric side toward the guide post on the side opposite to the eccentric side, and is capable of contacting the side of the stop claw body. The guide posts at least have the function of guiding the stop claw body to move up and down from the left and right (the guiding function), regardless of whether they have the function of mounting the pull tab. Therefore, in order to play the guiding function without playing the function of mounting the pull tab, the guide posts may also protrude from the upper surface of the upper wing plate near the stop claw body. In this case, in order to support the pull tab to be rotatable, a pair of pull tab mounting posts, different from the pair of guide posts, protrude from the upper surface of the upper wing plate, thereby connecting the pull tab and the body; or, without the pair of pull tab mounting posts protruding from the upper surface of the upper wing plate, the stop claw is connected to the pull tab alone, or other components (such as a cover member covering the stop claw from the top) cooperate with the stop claw to connect to the pull tab.

[0035] As an example, the positioning protrusion looks like this.

[0036] That is, the positioning protrusion extends downward toward the guide post on the side opposite to the eccentric side.

[0037] As an example, a claw looks like this.

[0038] That is, the end of the claw on the claw side of the stopping claw body extends downward from a position that is more inward than the left and right ends of that end.

[0039] The zipper of the present invention includes the aforementioned zipper pull and a pair of chain teeth that are opened and closed by the zipper pull. Furthermore, the pair of chain teeth comprises: a pair of strips that are opposite each other on the left and right sides and extend forward and backward; and a pair of chain teeth fixed to opposite side edges on the lower surfaces of the pair of strips.

[0040] The effects of the invention

[0041] In this invention, within the range directly next to the claw hole, the left and right ends of the groove portion are located on the outer side relative to the left and right ends of the connecting post, and the left and right ends of the upper bulge portion are located on the inner side relative to the left and right ends of the connecting post. Therefore, the width of the upper bulge portion is narrowed. Furthermore, a pair of fine groove portions of the groove portion are formed in the range on the inner and outer sides of the left and right sides relative to the left and right ends of the connecting post. The opposite side edges of the belt can be accommodated in the pair of fine groove portions within the range. The upper bulge portion is difficult to contact the belt, resulting in a reduction in the sliding resistance of the pull head. Attached Figure Description

[0042] Figure 1 This is a top view showing the zipper according to the first embodiment of the present invention.

[0043] Figure 2 This is a view of the zipper of the first embodiment viewed from the lower surface direction, and is a partial cross-sectional view showing the state of the zipper teeth inside the zipper head.

[0044] Figure 3 This is a cross-sectional view of the zipper of the first embodiment, cut in the vertical direction.

[0045] Figure 4 This is a left-side view showing the zipper pull of the first embodiment.

[0046] Figure 5 yes Figure 7 VV-line sectional view.

[0047] Figure 6 yes Figure 4 The VI-VI line section view is a section view corresponding to the lower surface of the upper flange of the pull head.

[0048] Figure 7 yes Figure 4 The sectional view along line VII-VII is a sectional view corresponding to the lower surface of the upper ridge.

[0049] Figure 8 yes Figure 4 The cross-sectional view along line VIII-VIII, and the orientation of the view is aligned with... Figure 7 Opposite sectional view.

[0050] Figure 9 yes Figure 6 The IX-IX line cross-sectional view shows the stop claw of the puller head in the raised state.

[0051] Figure 10 yes Figure 6 XX-line sectional view.

[0052] Figure 11 This is a cross-sectional view showing the stop pawl of the puller head in the lowered state.

[0053] Figure 12 This is a top view showing the torso of the puller.

[0054] Explanation of reference numerals in the attached figures

[0055] 1. Zipper; 2. Zipper tooth tape; 3. Zipper pull; 4. Tape; 4a. Core thread; 4s. Stitch; 5. Zipper tooth row; 5a. Zipper tooth; 5c. Continuous zipper tooth section; 6. Front stop; 7. Rear stop; 10. Body; 10a. Zipper tooth passage; 10b. Tape groove; 10d. Hook and hook section (left side, right side); 10h. Mounting hole; 10s. Internal space; 11. Upper wing plate; 11a. Inner part; 11b. Outer part; 11d. Groove section; 11e. 11f, Fine groove; 11h, Coarse groove; 11p, Width; 11r, 11s, Bottom surface (bottom of fine groove); 11u, Flat surface; 11w1, 11w2, Width; 12, Lower flange; 13, Connecting post; 13w, Width; 14, Flange; 15, Upper bulge; 15a, First strip-shaped portion; 15b, Tapered portion; 15j, Side side opposite to the eccentric side; 15k, Side side of the eccentric side; 15c, Second strip-shaped portion; 15u, Lower surface Surface; 15w, width; θ1, θ2, angles; θ3, θ4, tilt angles; H, claw hole; H1, pointed hole; R, range directly beside; 16, lower bulge; 16u, upper surface; 18, mounting post; 18a, front post; 18b, rear post (guide post); 19, positioning protrusion; 19a, side; 21, side guide; G1, G2, G3, G4, clearance; 30, stop claw; 31, stop claw main body; 31a, front piece; 3 1b. Upper part; 31c. Rear part; 31h. Left side part; 31i. Right side part; 31j. Edge part; 31k. Edge part; 32. Claw; 32a, 32b. Side edge part; 32c. Slanted edge part; 32d. Lower edge part; 50. Pull tab; 51. Gripper part; 52. Pull tab connecting part; 53. Shaft part; C1, C2, C3. Center line; L1. Baseline (single-dot dashed line); L2, L3. Single-dot dashed line; L6. Track; P1, P2. Contact point. Detailed Implementation

[0056] like Figure 1As shown, the zipper 1 includes: a pair of chain teeth 2, which are opposite to each other and extend back and forth; and a slider 3, which can move back and forth on opposite side edges of the pair of chain teeth 2 and is used to open and close the pair of chain teeth 2. Furthermore, the term "opposite side edges" refers to the right edge in the case of the left chain tooth 2 and the left edge in the case of the right chain tooth 2.

[0057] With zipper 1 placed on a flat surface, determine the orientation as follows.

[0058] "Forward direction" refers to the direction in which the pair of chain teeth 2 close. Figure 1 The middle direction is upward.

[0059] "Backward direction" refers to the direction in which the pair of chain teeth 2 open. Figure 1 The middle direction is downward.

[0060] "Left and right direction" refers to the orientation of a pair of chain teeth 2. Figure 1 The center is the direction perpendicular to the front and back directions. The "left direction" is... Figure 1 "Middle" refers to the left direction. "Right direction" refers to... Figure 1 "Center" refers to the right direction.

[0061] "Up-down direction" refers to the direction orthogonal to the front-back and left-right directions, also known as the thickness direction. "Up direction" refers to... Figure 1 The direction perpendicular to the paper (the direction perpendicular to the front-back and left-right directions) is the direction facing forward. "Down direction" refers to... Figure 1 The direction that is perpendicular to the paper and faces inwards.

[0062] A pair of chain teeth 2 includes: a pair of belts 4 facing each other; a pair of chain teeth 5, which are respectively fixed to the lower surfaces of the opposite side edges of the pair of belts 4; and a pair of front stop blocks 6 and rear stop blocks 7, which are used to determine the range of forward and backward movement of the pull head 3 relative to the pair of chain teeth 5.

[0063] The front stop 6 is fixed to the opposite side edge of the pair of belts 4 on the front side relative to the pair of chain teeth 5. The rear stop 7 is fixed to the opposite side edge of the pair of belts 4 on the rear side relative to the pair of chain teeth 5. Furthermore, the slider 3 collides with either the front stop 6 or the rear stop 7, thereby determining the forward and backward movement range of the slider 3.

[0064] Belt 4 is a strip that is longer front to back, and its thickness is in the vertical direction. When viewed from above, the opposing side edges of the chain tooth row 5 extend to the left or right from the opposing side edges of belt 4. Furthermore, regarding the fixing of belt 4 to chain tooth row 5, as... Figure 2 The stitches are used as shown in the diagram for 4 seconds.

[0065] The chain tooth row 5 is composed of a plurality of chain teeth 5a arranged in a row in the front-back direction. In this embodiment, the chain tooth row 5 is composed of a continuous chain tooth portion 5c of the plurality of chain teeth 5a in the front-back direction.

[0066] The continuous chain tooth section 5c is a single synthetic resin filament bent in three dimensions (up / down, left / right, front / back). Each filament is formed by continuously forming a unit of chain teeth 5a that engages with an opposing filament. Furthermore, the chain teeth 5a of the continuous chain tooth section 5c can engage and disengage with the chain teeth 5a of other opposing continuous chain tooth sections 5c. The filament is helical or serrated. Corresponding to its bent shape, the filament is sometimes referred to as a coil chain tooth or a serrated chain tooth. Incidentally, in this embodiment, the filament is a coil chain tooth, such as... Figure 3 As shown, it becomes a shape that is wound around the core wire 4a, which extends in a straight line in the front-back direction.

[0067] The zipper 3 has a so-called stop function, such as Figure 1 , 4 As shown, it includes: a body 10 that guides a pair of chain teeth 5 into an engaging and separable configuration; a stop pawl 30 that is connected to the body 10 on its upper side relative to the internal space 10s of the body 10 and is used to stop the position of the body 10 relative to the pair of chain teeth 5; and a pull tab 50 that operates the body 10 and the stop pawl 30.

[0068] like Figure 5 , 10 As shown, the stop claw 30 includes: a stop claw body 31, which is connected to the body 10 on its upper side relative to the internal space 10s of the body 10, and is connected to the pull tab 50; and a claw 32, which extends downward from the stop claw body 31. The claw 32, as one end of the stop claw 30, descends into the internal space 10s of the body 10 and contacts a pair of chain teeth 5, thereby stopping the position of the body 10 relative to the pair of chain teeth 5 using the pull head 3. Details of the stop claw 30 will be discussed later.

[0069] The pull tab 50 can rotate back and forth. Rotation refers to the movement of the pull tab 50 when it is operated to open and close a pair of chain teeth 2 using the pull head 3. For example... Figure 1 As shown, the pull tab 50 includes: a gripper portion 51; and a pull tab connecting portion 52, which extends from the gripper portion 51 and is connected to the body 10. The pull tab connecting portion 52 is annular, and a portion of the annular shape serves as a shaft portion 53 that acts as the center when the pull tab 50 rotates.

[0070] If the pull tab 50 is pulled upwards, the stop claw body 31 of the stop claw 30 moves upwards, and the claw 32 moves to a position above the chain teeth 5, so that the carcass 10 can move relative to the pair of chain teeth 5. If the pull tab 50 is laid down on the carcass 10, the stop claw body 31 moves downwards, and the claw 32 descends and contacts the chain teeth 5a, so that the carcass 10 stops relative to the pair of chain teeth 5.

[0071] like Figures 3-5 As shown, the body 10 includes: an upper wing plate 11 and a lower wing plate 12 facing each other vertically; a connecting post 13 that connects the upper wing plate 11 and the lower wing plate 12 on the front side and guides a pair of chain teeth 5; a pair of flanges 14 that protrude upward from the left and right side edges of the lower wing plate 12 toward the upper wing plate 11; an upper bulge 15 that bulges downward from the lower surface of the upper wing plate 11 and extends in the front-rear direction relative to the connecting post 13; a lower bulge 16 that bulges upward from the upper surface of the lower wing plate 12 and extends in the front-rear direction relative to the connecting post 13; and a claw hole H that passes vertically through the upper wing plate 11 and the upper bulge 15 and guides the claw 32 to move vertically.

[0072] When viewed from the lower surface of the upper wing 11, as Figure 7 As shown, the claw hole H has a pointed aperture H1 that tapers from the left and right sides toward the left and right inward as it faces rearward. The pointed aperture H1 is located at the rear end of the claw hole H. The left and right centers of the claw hole H are in a left-right direction relative to the left and right centers of the upper wing plate 11. Figure 7 The center is offset to the left. The claw hole H is formed in the region encompassing the center of the upper wing plate 11 on both the left and right sides. Figure 7 The diagram shows center lines C1 indicating the left and right centers of the upper wing plate 11 and C2 indicating the left and right centers of the claw hole H. Hereafter, "eccentric side" will be used based on the relationship between the left and right centers of the claw hole H and the left and right centers of the upper wing plate 11. Furthermore, as... Figure 12 As shown, the claw hole H on the upper surface of the upper wing plate 11 is rectangular in shape, parallel to the front, back, left, and right sides. The rectangle is indicated by thin lines. Furthermore, the diameter of the claw hole H narrows towards its center as it faces downwards. Moreover, at the lower end of the claw hole H, the front part is rectangular in shape, parallel to the front, back, left, and right sides, while the rear part is trapezoidal in shape, parallel to the left and right sides, and tapering towards the left and right inwards as it faces backwards.

[0073] In addition to the above, such as Figure 12As shown, the body 10 includes: a pair of mounting posts 18 that protrude from the upper surface of the upper wing plate 11 on the left and right sides of the claw hole H and are used to mount the pull tab 50; and a positioning protrusion 19 that extends from the mounting post 18 on the eccentric side toward the mounting post 18 on the side opposite to the eccentric side and can contact the side of the stop claw body 31.

[0074] like Figure 9 As shown, a connecting post 13 extending in the vertical direction is provided between the lower surface of the upper wing plate 11 and the upper surface of the lower wing plate 12, on their respective front sides. In this embodiment, for the upper surface of the upper wing plate 11, the portion corresponding to the pair of mounting posts 18, in other words, the left and right inner portions 11a relative to the pair of mounting posts 18, are set as a lower step portion that is stepped down from the left and right outer portions 11b relative to the pair of mounting posts 18. The lower step portion is a horizontal plane orthogonal to the vertical direction. Furthermore, for the upper surface of the upper wing plate 11, the left and right inner portions 11a relative to the pair of mounting posts 18 may be set with a shape different from that in this embodiment. For example, they may be set at the same height position or higher than the left and right outer portions 11b relative to the pair of mounting posts 18, or the left and right inner portions 11a may be set as a slope that decreases towards the central side on the left and right.

[0075] In addition, such as Figure 3 , 9 As shown, the carcass 10 has an internal space 10s therein. The internal space 10s includes: a chain tooth passage 10a that extends in the front-to-back direction; and a belt groove 10b that communicates with the chain tooth passage 10a and is open on the left or right. A pair of chain teeth 5 pass through the chain tooth passage 10a, and the belt 4 on the corresponding side passes through each belt groove 10b. In addition, the front part of the chain tooth passage 10a branches into two strands to the left and right relative to the connecting post 13, and the rear part of the chain tooth passage 10a extends rearward relative to the connecting post 13.

[0076] like Figure 5 As shown, the stop pawl 30 is supported so that it can swing in the vertical direction with the portion forward of the pawl hole H serving as the fulcrum and the portion rearward of the fulcrum serving as the swing end. Furthermore, a downward pressing force is constantly applied to the stop pawl 30 from the elastic member. In this embodiment, the stop pawl 30 is also an elastically deformable member, more specifically, a leaf spring.

[0077] The stop pawl 30, as described above, includes a stop pawl body 31 and a pawl 32. The stop pawl body 31 is mounted on the torso 10 with its front portion serving as a pivot point for swinging. The pawl 32 is located at the rear end of the stop pawl body 31 and moves up and down according to the swinging motion of the stop pawl body 31. More details are as follows.

[0078] The stop claw main body 31 includes: a front plate 31a extending vertically along the front side of the carcass 10; an upper plate 31b extending rearward from the upper end of the front plate 31a; and a rear plate 31c extending downward from the rear end of the upper plate 31b and connecting to the claw 32. Additionally, the stop claw main body 31 includes a pair of mounting plates (not shown) extending laterally from the lower end of the front plate 31a and mounted on the carcass 10. The pair of mounting plates and the rear plate 31c form an inverted T-shape at the lower front of the stop claw main body 31.

[0079] like Figure 5 As shown, a mounting hole 10h for mounting the main body 31 of the stop claw is formed at the front of the body 10. The mounting hole 10h is a through hole extending vertically from the upper surface of the upper wing plate 11 to the lower surface of the lower wing plate 12 at the location of the connecting post 13. The diameter of the upper part of the mounting hole 10h decreases as it faces downwards. Conversely, the diameter of the lower part of the mounting hole 10h widens as it faces downwards. Figure 12 As shown, the middle portion of the mounting hole 10h in the vertical direction is T-shaped when viewed from above. That is, the left and right portions 10d of the rear surface at the middle portion of the mounting hole 10h in the vertical direction protrude forward relative to the left and right center portions of the rear surface. These left and right portions 10d are a pair of hook portions 10d for hooking a pair of mounting pieces.

[0080] The pair of mounting plates of the stop claw body 31 are hooked onto the lower surface of the pair of hook portions 10d, thereby stopping the claw body 31 from being installed in the mounting hole 10h. In this installed state, the front plate 31a is as follows: Figure 5 As shown, it is tilted so that it faces forward as it moves upward, with its upper end near the front surface of the mounting hole 10h in contact. This contact point becomes the fulcrum for the swinging of the stop claw 30 in this embodiment.

[0081] like Figure 9 As shown, the claw 32 extends downward from one end of the claw 32 side of the stop claw body 31, which is located on the left and right inner side of the left and right ends of that end.

[0082] The lower end of the stop claw body 31, on the claw 32 side, i.e., the lower end of the rear plate 31c, has a left side portion 31h and a right side portion 31i relative to the claw 32. In this embodiment, the right side portion 31i is inclined in the left-right direction as it faces downward from the right end toward the left. The left side portion 31h has a first side portion 31j that extends straight from the left end to the right, and a second side portion 31k that is arc-shaped and recessed as it faces downward from the right end of the first side portion 31j toward the right. Furthermore, in this embodiment, the portion (second side portion 31k and right side portion 31i) located below the first side portion 31j of the stop claw body 31 is housed in the upper part of the claw hole H that guides the claw 32 to move up and down when the claw 32 is in the lower limit position. Therefore, in this embodiment, the shape of the upper part of the claw hole H corresponds to the shape of the lower end portion of the stop claw body 31.

[0083] Furthermore, the width of the claw 32 at the top (bottom) narrows downwards, and the left end (the end opposite to the eccentric side) is inclined downwards towards the right end (eccentric side). More specifically, in this embodiment, the claw 32 has a right end (eccentric side) that is a side portion 32a extending straight in the vertical direction, an upper part of the left end (the end opposite to the eccentric side) that is parallel to the right end, a lower part of the left end that is an inclined side portion 32c that extends downwards towards the right end (eccentric side), and a lower end that extends straight left and right 32d.

[0084] Furthermore, the hypotenuse 32c is bent. The lower part of the hypotenuse 32c is inclined at a near-horizontal angle compared to the upper part of the hypotenuse 32c.

[0085] The left side 32b of the claw 32 and the first side 31j of the left side 31h of the stop claw body 31 are positioned on two tangent lines that are respectively arranged on the two ends of the arc of the second side 31k of the left side 31h.

[0086] The right side portion 32a of the claw 32 is continuous with the right side portion 31i of the lower end of the stop claw body portion 31 at an obtuse angle.

[0087] like Figure 7As shown, the upper bulge 15 extends along the front-rear direction from the middle portion in the left-right direction of the upper wing plate 11. More specifically, the upper bulge 15 is formed in a front-rear range with the claw hole H as the center on the rear side relative to the connecting post 13. In this embodiment, the upper bulge 15 is formed in the range between the rear end of the upper wing plate 11 and the rear end of the connecting post 13. In addition, the upper bulge 15 includes: a first strip-shaped portion 15a, which extends straight back-rear relative to the connecting post 13; a pointed portion 15b, which becomes pointed from the left and right sides toward the left and right inward as it moves rearward from the rear end of the first strip-shaped portion 15a; and a second strip-shaped portion 15c, which extends straight rearward from the rear end of the pointed portion 15b.

[0088] The first strip 15a is formed in the front and rear range relative to the front end of the claw hole H.

[0089] The pointed portion 15b is formed in the rear region starting from the pointed orifice H1 of the claw hole H. "Starting from the pointed orifice H1" means that the pointed orifice H1 is included in the entire length of the upper raised portion 15 in the front-rear direction, with the pointed orifice H1 as the starting point.

[0090] The upper ridge is asymmetrical around 15 degrees. More specifically, as... Figure 6 As shown, the pointed portion 15b of the upper bulge 15 will... Figure 6 The left side (the eccentric side 15k) is set as an inclined plane tilted at an angle θ1 relative to the front-back direction. Figure 6 The right side (side 15j, the side opposite to the eccentric side) is designed as an inclined plane at an angle θ2 relative to the front-rear direction. Angles θ1 and θ2 are both acute angles and are different angles. Furthermore, angle θ1 is larger than angle θ2. The upper bulge 15 is thus asymmetrical. Incidentally, the upper wing 11, lower wing 12, connecting post 13, a pair of flanges 14, and lower bulge 16 are symmetrical.

[0091] exist Figure 7 In the ideal zipper configuration, the dashed line represents the trajectory L6 through which the opposite sides of the tape pass. This ideal zipper differs from the zipper of the present invention and is used on the so-called back side, but without a stop function. The upper bulge is symmetrical and the tape does not contact the zipper. The trajectory L6 is Y-shaped and substantially symmetrical. Theoretically, with the upper bulge forming a V-shape relative to the Y-shaped trajectory L6 on the inner side, the upper bulge and tape are not in contact. However, in the first embodiment, the claw hole H is formed eccentrically on one side of the V-shape of the trajectory L6. Therefore, in the case of the so-called back-side zipper 1 with a stop function, the upper bulge 15 and tape 4 are in contact. Incidentally, for Figure 7The trajectory L6, when a pair of belts 4 are closed, has the opposite side edges of the pair of belts 4 in contact. However, when a pair of belts 4 are closed, the opposite side edges of the pair of belts 4 are sometimes configured with a small gap between them.

[0092] also, Figure 6 and Figure 7 The height positions of the cut carcass 10 are different. Figure 6 It is a cross-sectional view of the torso 10 when it is cut horizontally (in a direction orthogonal to the vertical direction) corresponding to the lower surface of the upper wing plate 11, and continuously showing the cross-section of the upper end of the upper bulge 15 and the cross-section of the connecting column 13. Figure 7 This is a cross-sectional view of the carcass 10 when it is cut horizontally below the upper ridge 15.

[0093] Within the area R directly next to the claw hole H, and the area before and after it (the first strip 15a and the tip 15b) (see reference). Figure 6 , 7 The left side (side 15j on the opposite side to the eccentric side) and the right side (side 15k on the eccentric side) of the upper raised portion 15 are as follows: Figure 10 As shown, the slope is shaped such that it slopes downwards from both sides toward the left and right inwards. Furthermore, within the area R directly next to the claw hole H, the left and right sides 15j and 15k of the upper bulge 15 are slopes that are inclined relative to the vertical direction. The inclination angle θ3 of the side 15j on the side opposite to the eccentric side is greater than the inclination angle θ4 of the side 15k on the eccentric side.

[0094] Within the area R directly beside the claw hole H, including the area before and after it (the first strip-shaped portion 15a and the pointed portion 15b), the upper raised portion 15 has left and right side surfaces 15j and 15k and a lower surface 15u. The lower surface 15u of the upper raised portion 15 is a plane orthogonal to the vertical direction. Furthermore, the claw hole H is formed on the lower surface 15u of the upper raised portion 15. In other words, the claw hole H is formed in the upper raised portion 15 at a position further to the left and right than the left and right side surfaces 15j and 15k. And, as... Figure 3 As shown, chain teeth 5a are arranged with a small gap between the lower surface 15u of the upper ridge 15 and the upper surface 16u of the lower ridge 16. Therefore, the opposite edges of the belt 4 are unlikely to come into contact with the claw 32 protruding downward from the claw hole H, thus preventing damage to the belt 4. Furthermore, the vertical distance between the upper ridge 15 and the lower ridge 16 is narrower than the vertical distance between the upper wing plate 11 and the lower wing plate 12 on the left and right sides relative to the upper ridge 15 and the lower ridge 16. In addition, the upper ridge 15 and the lower ridge 16 position the tops (engaging portions) of a pair of chain teeth 5 in the vertical direction within the pull head 3, stabilizing the engagement posture of the left and right chain teeth 5a.

[0095] Lower bulge 16 Figure 8 As shown, it is symmetrical from left to right. The left and right centers of the lower bulge 16 coincide with the left and right centers of the lower wing 12. Incidentally, in a top view, the centerline C3 of the lower wing 12 coincides with the centerline C1 of the upper wing 11. Figure 8 The diagram shows the centerline C3, indicating the left and right centers of the lower wing 12. Additionally, in... Figure 8 The upper ridge 15, which should not be shown, is represented by a double-dotted line, and the area R directly next to the claw hole H is represented by a single-dotted line.

[0096] The lower bulge 16 extends from the rear end of the lower wing plate 12 toward the connecting post 13. More specifically, the left and right ends of the lower bulge 16 extend in a straight line in the front-rear direction from the range R directly next to the claw hole H. Furthermore, for the lower bulge 16, the front end of the range R directly next to the claw hole H is located on the left and right inner sides relative to the left and right ends of the first strip-shaped portion 15a of the upper bulge 15, and the rear end of the lower bulge 16 is located on the left and right outer sides relative to the left and right ends of the second strip-shaped portion 15c of the upper bulge 15. In addition, at the front end of the tip 15b of the upper bulge 15, the left and right ends of the lower bulge 16 are located on the inner sides relative to the left and right ends of the upper bulge 15, and at the rear end of the tip 15b of the upper bulge 15, the left and right ends of the lower bulge 16 are located on the outer sides relative to the left and right ends of the upper bulge 15.

[0097] like Figure 6 As shown, the upper wing plate 11 has a groove 11d, which is recessed on the lower surface of the upper wing plate 11 and is used to guide the opposing side edges of a pair of straps 4.

[0098] The groove portion 11d includes: a pair of fine groove portions 11e and 11f, which are adjacent to the upper raised portion 15 on the left and right sides and extend back and forth; and a coarse groove portion 11h, in which the pair of fine groove portions 11e and 11f converge at their respective rear ends, and the coarse groove portion 11h extends rearward to the rear end of the upper wing plate 11. The left and right ends of the groove portion 11d extend straight in the back-forward direction. The portion of the lower surface of the upper wing plate 11 adjacent to the pair of fine groove portions 11e and 11f on the left or right is a planar portion 11u orthogonal to the vertical direction. The planar portion 11u is located at the same height as the lower end of the upper raised portion 15 (at... Figure 6 (The height position shown in the cross-section). In addition, the planar portion 11u is formed separately to the left and right, with the connecting post 13 and the groove portion 11d as the boundary. Furthermore, the planar portion 11u is formed on the portion of the upper wing plate 11 other than the peripheral portion.

[0099] like Figure 9 As shown, within the range R directly next to the claw hole H, on the side opposite to the eccentric side ( Figure 9 The width 11w2 of the groove 11f on the left side is greater than that on the eccentric side (in the middle). Figure 9 The width 11w1 of the groove portion 11e (on the right side) is [width]. The widths of the pair of groove portions 11e and 11f are determined based on the same plane as the flat portion 11u. In addition, the left and right ends of the upper raised portion 15 are also determined based on the same plane as the flat portion 11u.

[0100] The widths 11w1 and 11w2 of the pair of grooves 11e and 11f narrow laterally as they face upwards. In other words, the left and right sides of the pair of grooves 11e and 11f are inclined surfaces that slope upwards from the left and right sides toward the center. Additionally, the eccentric side ( Figure 9 The groove 11e on the right side of the claw hole H is in an inverted V-shape directly beside the front end of the claw hole H. More specifically, in the front-rear direction, the eccentric groove 11e is in an inverted V-shape within the range directly beside the front end of the claw hole H and directly beside the area between the claw hole H and the connecting post 13, and has left and right sides. Additionally, as... Figure 10 As shown, the eccentric groove 11e, in addition to having left and right side surfaces, also has a bottom surface 11r in the range directly next to and behind the rear end of the claw hole H.

[0101] In addition, the groove 11f on the side opposite to the eccentric side has a bottom surface 11s in addition to the left and right sides in the area directly next to the claw hole H and in front of and behind it.

[0102] In other words, in addition to having left and right side surfaces, the pair of groove portions 11e and 11f also have bottom surfaces 11r and 11s respectively in the range directly beside and behind the rear end of the claw hole H (more specifically, the pointed hole portion H1) and the range 11e and 11f respectively. These bottom surfaces 11r and 11s are the bottoms 11r and 11s of the grooves in planes orthogonal to the vertical direction.

[0103] Within a range R directly beside the claw hole H, to reduce the sliding resistance of the pull head 3, the positional relationship between the groove portion 11d, the connecting post 13, and the upper protrusion 15 is determined with reference to the left and right ends of the connecting post 13. Furthermore, the left and right ends of the connecting post 13 are determined as follows, using references for the vertical position and the front-back position.

[0104] The reference point for the vertical position is set at the point where the zipper tooth 5a contacts the connecting post 13. The zipper tooth 5a extends to the left or right from the opposite side edge of the belt 4. The top of the protruding side of the zipper tooth 5a contacts the connecting post 13. Incidentally, the cross-section of the middle portion of the connecting post 13 in the vertical direction is the same at any height position when cut along a direction orthogonal to the vertical direction. Therefore, when it is difficult to determine the contact point of the zipper tooth 5a, the left and right ends of the connecting post 13 are determined based on the midpoint in the vertical direction between the upper wing plate 11 and the lower wing plate 12. Furthermore, cases where it is difficult to determine the contact point include situations where the zipper pull 3 is sold as a single item, or when the zipper 1 is not in use, etc.

[0105] Furthermore, the reference for the position in the front-to-back direction is premised on satisfying the reference for the position in the vertical direction. And, as... Figure 6 As shown, in the cross-section at the reference position in the vertical direction of the connecting column 13, the reference position in the front-back direction is set to the position where the maximum value of the width 13w of the connecting column 13 is reached. Incidentally, in this embodiment, in the cross-section at the reference position in the vertical direction of the connecting column 13, the left and right sides are parallel to the front-back direction. Figure 6 Draw a single-dotted line L1 extending in a straight line from the position where the width 13w of the connecting post 13 reaches its maximum value, that is, from the left and right ends of the connecting post 13. This pair of single-dotted lines L1 represents the reference lines L1 at the left and right ends of the connecting post 13. Additionally, in Figure 6 In the diagram, dashed lines L2 and L3, parallel to the reference lines L1, are drawn on the left and right inner and outer sides, respectively. The interval between the dashed lines L2 on the left and right outer sides relative to the reference lines L1, within a range R directly next to the claw hole H, is the width 11p of the groove portion 11d. The interval between the dashed lines L3 on the left and right inner sides relative to the reference lines L1, within a range R directly next to the claw hole H, is the width 15w of the upper protrusion 15. Furthermore, the width 11p of the groove portion 11d and the width 15w of the upper protrusion 15 are the maximum values ​​within the range R directly next to the claw hole H.

[0106] Furthermore, within the range R directly next to the claw hole H, the left and right ends of the groove portion 11d (a pair of single-dot dashed lines L2) are located on the outer side relative to the left and right ends of the connecting post 13 (a pair of reference lines L1), and the left and right ends of the upper protrusion portion 15 (a pair of single-dot dashed lines L3) are located on the inner side relative to the left and right ends of the connecting post 13 (a pair of reference lines L1).

[0107] In addition, in this embodiment, such as Figure 7As shown, the rear surface of the connecting post 13 has a tapered shape that tapers from both sides toward the left and right inwards as it faces rearwards. In this tapered shape, the points (hereinafter referred to as "contact points") where the chain teeth 5a contact the connecting post 13 are slightly rearwards from the left and right end points of the rear surface of the connecting post 13, and slightly inwards to the left and right relative to a pair of reference lines L1, respectively. Furthermore, in Figure 7 The shape of the upper raised portion 15, which is not normally indicated, is shown by a double-dotted line. Figure 6 (The cross-sectional shape of the upper raised portion 15 in the middle).

[0108] Furthermore, in this embodiment, within the range R directly next to the claw hole H, the left and right ends of the groove portion 11d (a pair of single-dot dashed lines L2) are located on the outer side relative to the left and right contact points P1 and P2 between the connecting post 13 and the chain tooth 5a, and the left and right ends of the upper protrusion portion 15 (a pair of single-dot dashed lines L3) are located on the inner side relative to the left and right contact points P1 and P2 between the connecting post 13 and the chain tooth 5a.

[0109] like Figure 4 , 5 As shown in Figure 12, the mounting post 18 has a front post 18a and a rear post 18b that are spaced apart from each other. The front post 18a and the rear post 18b approach each other as they face upwards. The front post 18a and the rear post 18b cooperate to support the shaft portion 53 of the pull tab 50 so that it can rotate.

[0110] Additionally, a pair of mounting posts 18 are positioned to the left and right of the claw hole H. The pair of mounting posts 18 are located directly beside the range of vertical movement of the stop claw body 31. The opposing sides of the pair of mounting posts 18, and more specifically, the opposing sides of the pair of rear posts 18b, are configured as inclined surfaces that slope inwards to the left and right as they face downwards.

[0111] Furthermore, the body 10 has a positioning protrusion 19 that extends from the mounting post 18 on the eccentric side toward the mounting post 18 on the side opposite to the eccentric side, and can contact the side of the stop claw body 31.

[0112] like Figure 9 As shown, the positioning protrusion 19 is formed in a stepped manner on the lower part of the rear post 18b in the eccentric mounting post 18. The positioning protrusion 19 extends downward toward the mounting post 18 on the side opposite to the eccentric side. Furthermore, the side surface 19a of the positioning protrusion 19 is an inclined surface with respect to the vertical direction.

[0113] A pair of rear posts 18b of a pair of mounting posts 18 cooperate with positioning protrusions 19 to form a pair of side guides 21 that guide the stop claw body 31 from the left and right to move vertically. Thus, a pair of side guides 21 are formed on the body 10. In this embodiment, the rear posts 18b cooperate with the front posts 18a opposite to the rear posts 18b on the front side of the rear posts 18b to form mounting posts 18, thus serving to mount the pull tab 50, and cooperating with the other rear posts 18b to guide the stop claw body 31 from the left and right to move vertically (the guiding function). In this way, if the relationship with the front posts 18a is ignored, the rear posts 18b only serve a guiding function, and therefore are also guide posts 18b.

[0114] There exists a relationship where the lateral gap G1 formed between the eccentric side guide portion 21 (the positioning protrusion 19 extending from the eccentric side guide post 18b) and the stop pawl body portion 31 is smaller than the lateral gap G2 formed between the pawl 32 and the pawl hole H on the eccentric side. This relationship exists when the gap G1 formed between the eccentric side guide portion 21 and the stop pawl body portion 31 is 0 (when the eccentric side guide portion 21 and the stop pawl body portion 31 are in contact), the lateral gap G2 formed between the pawl 32 and the pawl hole H on the eccentric side is larger than 0.

[0115] Furthermore, the lateral gap G3 formed between the side guide portion 21 (guide post 18b on the opposite side of the eccentric side) and the stop claw body 31 is smaller than the lateral gap G4 formed between the claw 32 and the claw hole H on the opposite side of the eccentric side. This relationship exists such that when the gap G3 between the side guide portion 21 and the stop claw body 31 on the opposite side of the eccentric side is 0 (when the side guide portion 21 on the opposite side of the eccentric side is in contact with the stop claw body 31), the lateral gap G4 formed between the claw 32 and the claw hole H on the opposite side of the eccentric side is larger than 0.

[0116] The relationship between these gaps G1 to G4 is satisfied within the range of the vertical movement of the stop pawl body 31. Therefore, even in situations such as Figure 9 As shown, even if the upper limit of the lower end of the claw 32 is located above the lower end of the claw hole H within the range of its vertical movement, the claw 32 will not contact the claw hole H and thus will not hinder its vertical movement. Furthermore, as... Figure 11 As shown, the lower limit of the lower end of the claw 32 within the range of its up-and-down movement is located below the lower end of the claw hole H and within the internal space 10s of the carcass 10.

[0117] The "left-right gap G1" and "left-right gap G3" refer to the left-right interval at the contact points between the main body 31 of the stop claw and the side guide 21.

[0118] In this embodiment, the left and right sides of the portion of the stop claw main body 31 disposed between the pair of side guides 21 are set as straight surfaces in the vertical direction. On the other hand, the opposing sides of the pair of side guides 21 are set as inclined surfaces that slope inwards to the left and right as they face downwards. Thus, the lower end of the claw 32 side of the stop claw main body 31 becomes a portion that can contact the pair of side guides 21. Furthermore, "left and right gap G1" and "left and right gap G3" refer to the left and right intervals between the lower end of the claw 32 side of the stop claw main body 31 and the side guides 21.

[0119] On the other hand, "left and right gap G2" and "left and right gap G4" refer to the left and right intervals at the full height position within the range where the claw 32 and the claw hole H are opposite each other.

[0120] For the zipper 1 of the first embodiment described above, within the range R directly next to the claw hole H, the left and right ends of the groove portion 11d (a pair of single-dot lines L2) are located on the outer side relative to the left and right ends of the connecting post 13 (a pair of reference lines L1), and the left and right ends of the upper bulge portion 15 (a pair of single-dot lines L3) are located on the inner side relative to the left and right ends of the connecting post 13 (a pair of reference lines L1). Therefore, the width of the upper bulge portion 15 is narrowed, and the groove portion 11d... The pair of grooves 11e and 11f of d are formed on the inner and outer sides of the left and right ends (a pair of reference lines L1) of the connecting post 13. The opposite side edges of the belt 4 can be accommodated in the pair of grooves 11e and 11f within the range. When the zipper 3 slides, the opposite side edges of the belt 4 are accommodated (avoided) in the grooves 11e and 11f, and the upper protrusion 15 is difficult to contact the belt 4. As a result, friction is reduced and the sliding resistance of the zipper 1 is reduced.

[0121] Furthermore, in the zipper 1 of the first embodiment, the claw hole H has a pointed hole H1, and the upper bulge 15 has a pointed tip 15b. Therefore, the width of the pointed tip 15b of the upper bulge 15 is narrowed corresponding to the shape of the pointed hole H1, which can reduce the size of the upper bulge 15 and increase the size of the grooves 11e and 11f. As a result, the opposite side edges of the belt 4 can avoid contact with the grooves 11e and 11f, making it difficult to contact the upper bulge 15, and reducing the sliding resistance of the zipper 1.

[0122] Furthermore, in the zipper 1 of the first embodiment, the upper bulge 15 has a first strip 15a in the range before and after the front end of the claw hole H. Therefore, compared with the upper bulge, which has a shape that bulges outward to the left and right relative to the first strip 15a, the sliding resistance of the zipper 3 is smaller.

[0123] Furthermore, in the zipper 1 of the first embodiment, the left and right centers of the claw holes H are offset to the left and right relative to the left and right centers of the upper wing plate 11. Since the claw holes H are formed in a region including the left and right centers of the upper wing plate 11, compared to a zipper pull where the claw holes H are formed in a region offset from the left and right centers of the upper wing plate 11 and are significantly offset to the left and right relative to the left and right centers of the upper wing plate 11, the upper protrusion 15 can be reduced in size. As a result, the grooves 11e and 11f can be increased, and the opposing side edges of the belt 4 can avoid the grooves 11e and 11f, thus reducing the sliding resistance of the zipper 1.

[0124] Furthermore, in the zipper 1 of the first embodiment, within the range R directly next to the claw hole H, the width 11w2 of the groove portion 11f on the side opposite to the eccentric side is wider than the width 11w1 of the groove portion 11e on the eccentric side. Therefore, the upper bulge 15 can be made smaller on the side opposite to the eccentric side. As a result, the groove portion 11f can be increased, and the opposite side edge of the belt 4 can avoid the groove portion 11f, making it difficult to contact the upper bulge 15, thus reducing the sliding resistance of the zipper 1.

[0125] Furthermore, in the zipper 1 of the first embodiment, within a range R directly next to the rear end of the claw hole H, a pair of groove portions 11e and 11f each have groove bottoms 11r and 11s that are perpendicular to the vertical direction. Therefore, compared with groove portions without groove bottoms 11r and 11s, the capacity of the opposite side edges of the belt 4 is increased, and the opposite side edges of the belt 4 can avoid the groove portions 11e and 11f, making it difficult to contact the upper protrusion 15, thus reducing the sliding resistance of the zipper 1.

[0126] Furthermore, for the zipper 1 in the first embodiment, within the range R directly next to the claw hole H, the left and right sides 15j and 15k of the upper bulge 15 are inclined surfaces relative to the vertical direction. Moreover, the inclination angle θ3 of the side opposite to the eccentric side is larger than the inclination angle θ4 of the side opposite to the eccentric side. Therefore, the groove 11f can be increased on the side opposite to the eccentric side, and the opposite side edge of the belt 4 can be accommodated in the groove 11f without deforming as much as possible, thus reducing the sliding resistance of the zipper head 3.

[0127] Furthermore, in the zipper 1 of the first embodiment, although the sliding resistance of the zipper head 3 is reduced, the lateral gap G1 formed between the side guide portion 21 on the eccentric side and the stop claw body portion 31 is smaller than the lateral gap G2 formed between the claw 32 and the claw hole H on the eccentric side. Therefore, the claw 32 does not contact the claw hole H when it moves up and down, allowing the claw 32 to move up and down reliably. Moreover, by extending the positioning protrusion 19 downwards toward the mounting post 18 on the side opposite to the eccentric side, the impact when the stop claw body portion 31 contacts the positioning protrusion 19 can be mitigated, allowing for smooth up and down movement of the claw 32.

[0128] Furthermore, in the zipper 1 of the first embodiment, the claw 32 extends downward from the claw 32 side of the stop claw body 31 at a position closer to the left and right sides than the left and right ends of that end. Moreover, the left and right centers of the claw 32 are offset to the left and right relative to the left and right centers of the stop claw body 31. Since the claw 32 is formed in a region including the left and right centers of the stop claw body 31, compared to a zipper pull where the claw 32 is formed in a region offset from the left and right centers of the stop claw body 31 and is significantly offset to the left and right relative to the left and right centers of the stop claw body 31, the upper protrusion 15 can be reduced in size. As a result, the grooves 11e and 11f can be increased, and the opposing side edges of the belt 4 can avoid contact with the upper protrusion 15, thus reducing the sliding resistance of the zipper 1.

[0129] This invention is not limited to the above-described embodiments, and appropriate modifications can be made without departing from its spirit. For example, the zipper pull in the above-described embodiments is a zipper pull commonly known as a semi-automatic zipper pull, but this invention is not limited to this and can also use a zipper pull commonly known as an automatic zipper pull.

[0130] In detail, there are two types of zipper pulls with a stop function. One type is an automatic zipper pull. Although not illustrated, this type switches the contact and separation of the stop claw relative to a pair of chain teeth depending on whether the pull tab is pulled. This switching restricts or releases the movement of the torso in the forward and backward direction. More specifically, the automatic zipper pull has two functions. The first function is as follows: when the hand leaves the pull tab, the stop claw automatically contacts the pair of chain teeth, thus locking the forward and backward position of the zipper pull, making it difficult for the zipper pull to move. The second function is as follows: when the pull tab is pulled, the stop claw separates from the pair of chain teeth, thus unlocking the zipper pull and making it easy for the zipper pull to move.

[0131] Another type is a semi-automatic zipper. This is as described in the above embodiment: the zipper switches the contact and separation of the stop pawl 30 with respect to the pair of chain teeth 5 based on the posture of the zipper tab 50 relative to the body 10. More specifically, the semi-automatic zipper functions as follows: regardless of the pulling operation on the zipper tab 50, it locks the front and rear positions of the zipper 3 when the zipper tab 50 is in a folded position relative to the body 10, and releases the lock when the zipper tab 50 is in an upright position relative to the body 10.

Claims

1. A zipper pull (3) for opening and closing a pair of zipper teeth (2), said pair of zipper teeth (2) comprising: a pair of straps (4) facing each other left and right and extending back and forth; and a pair of zipper teeth (5) fixed to opposite side edges of the lower surfaces of the pair of straps (4), the zipper pull (3) being characterized in that, The zipper pull (3) has the following features: The carcass (10) guides a pair of said chain teeth (5) to be able to engage and disengage; A stop claw (30), which is connected to the carcass (10) on its upper side relative to the internal space (10s) of the carcass (10), and for stopping the carcass (10) relative to the pair of chain teeth (5), a claw (32) at one end of the stop claw (30) descends in the internal space (10s) of the carcass (10) and contacts the pair of chain teeth (5); and Pull tab (50), which operates the carcass (10) and the stop claw (30). The body (10) includes: an upper wing plate (11) and a lower wing plate (12) facing each other vertically; a connecting post (13) that connects the upper wing plate (11) and the lower wing plate (12) at the front; a pair of flanges (14) that protrude upward from the left and right side edges of the lower wing plate (12); an upper bulge (15) that bulges downward from the lower surface of the upper wing plate (11) and extends in the front-rear direction relative to the connecting post (13); and a claw hole (H) that passes vertically through the upper wing plate (11) and the upper bulge (15) and guides the claw (32) to move vertically. The upper wing plate (11) has a groove (11d) recessed on the lower surface of the upper wing plate (11) and used to guide the opposing side edges of the pair of straps (4). The groove (11d) has a pair of narrow grooves (11e, 11f) extending to the left and right rearward of the upper raised portion (15). Within the range (R) directly beside the claw hole (H), the left and right ends of the groove (11d) are located on the outer side relative to the left and right ends of the connecting post (13), and the left and right ends of the upper ridge (15) are located on the inner side relative to the left and right ends of the connecting post (13). The left and right centers of the claw hole (H) are offset to the left and right relative to the left and right centers of the upper wing plate (11). The stop claw (30) comprises: a stop claw body (31) which is connected to the pull tab (50) on its upper side relative to the internal space (10s) of the carcass (10); and a claw (32) which extends downward from the stop claw body (31). The carcass (10) has a pair of side guides (21) that guide the main body (31) of the stop claw from the left and right to move up and down. The left-right gap (G1) formed between the side guide portion (21) on the eccentric side and the stop claw body portion (31) is smaller than the left-right gap (G2) formed between the claw (32) and the claw hole (H) on the eccentric side.

2. The zipper pull (3) according to claim 1, characterized in that, When viewed from the lower surface of the upper wing plate (11), the claw hole (H) has a pointed hole portion (H1) that becomes pointed from the left and right sides toward the left and right inward as it moves toward the rear. Within the range behind the pointed hole (H1), the upper protrusion (15) has a pointed tip (15b) that becomes pointed from the left and right sides toward the left and right inner sides as it moves toward the rear.

3. The zipper pull (3) according to claim 1 or 2, characterized in that, Within a range relative to the front end of the claw hole (H), the upper ridge (15) has a first strip (15a) that extends straight back and forth.

4. The zipper pull (3) according to claim 1 or 2, characterized in that, The upper raised portion (15) is asymmetrical.

5. The zipper pull (3) according to claim 1, characterized in that, The claw holes (H) are formed in the region including the left and right centers of the upper wing plate (11).

6. The zipper pull (3) according to claim 1, characterized in that, Within the range (R) directly next to the claw hole (H), the width (11w2) of the groove (11f) on the side opposite to the eccentric side of the pair of grooves (11e, 11f) is wider than the width (11w1) of the groove (11e) on the eccentric side.

7. The zipper pull (3) according to claim 1, characterized in that, Within a range directly next to the rear end of the claw hole (H), each of the pair of groove portions (11e, 11f) has a groove bottom (11r, 11s) on a plane orthogonal to the vertical direction.

8. The zipper pull (3) according to claim 1, characterized in that, Within the range (R) directly next to the claw hole (H), the left and right sides of the upper ridge (15) are inclined surfaces relative to the vertical direction, and the inclination angle (θ3) of the side opposite to the eccentric side is greater than the inclination angle (θ4) of the side on the eccentric side.

9. The zipper pull (3) according to claim 1, characterized in that, The pair of side guides (21) includes: a pair of guide posts (18b) that protrude from the upper surface of the upper wing plate (11) on the left and right sides of the claw hole (H); and a positioning protrusion (19) that extends from the guide post (18b) on the eccentric side toward the guide post (18b) on the side opposite to the eccentric side, and is capable of contacting the side of the stop claw body (31).

10. The zipper pull (3) according to claim 9, characterized in that, The positioning protrusion (19) extends downward toward the guide post (18b) on the side opposite to the eccentric side.

11. The zipper pull (3) according to claim 9 or 10, characterized in that, The claw (32) extends downward from the end of the stop claw body (31) on the claw (32) side from a position closer to the left and right sides of the end.

12. A zipper (1), characterized in that, The zipper (1) comprises a zipper head (3) as described in any one of claims 1 to 11 and a pair of chain teeth (2) that are opened and closed by the zipper head (3). A pair of said chain teeth (2) comprises: a pair of belts (4) which are opposite to each other and extend back and forth; and a pair of chain teeth (5) which are fixed to opposite side edges of the lower surfaces of the pair of said belts (4).

Images