Slider for slide fastener

Abstract

Provided is a slider for a slide fastener in which a pull tab is easy to operate when the slide fastener is opened, and the pull tab has good swingability in the left-right direction. A slider is provided with a main body (2), a pull tab (6), a stop claw (9), and an elastic plate (8). The pull tab is provided with a shaft (62). The stopping claw is provided with a shaft pressing part (91) which presses the shaft from above and a claw (92) which extends downwards from the rear end of the shaft pressing part. The main body is provided with a front mounting part (30) and a rear mounting part (40) which protrude from the upper surface of an upper wing plate (21), and a guide part (50) which protrudes from the upper surface of the upper wing plate and guides the shaft from the rear. The guide portion is disposed on the inner side with respect to the left and right side surfaces of the rear mounting portion. The front surface (50f) of the guide part guides the shaft from the rear, is an inclined surface rising toward the rear, and is arranged on the front side relative to the front surface (40f) of the rear mounting part.

Description

Technical Field

[0001] This invention relates to a zipper pull having a stop claw that stops the movement of the main body. Background Technology

[0002] As described above, a known slider includes an upper flange, a leaf spring disposed above the upper flange, a pair of mounting posts protruding from the front of the upper surface of the upper flange, a pair of mounting posts protruding from the rear of the upper surface of the upper flange, and a pull tab connected to the leaf spring (Patent Document 1). One end of the leaf spring is a stop pawl. The lower part of the front surface of one of the rear pair of mounting posts is a guide surface for guiding the axis of the pull tab. The guide surface has a shape that rises towards the rear.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 11-127918 Summary of the Invention

[0006] When the zipper is open, the zipper pull is pulled, and the axis of the zipper moves backward and is guided upward by the guide surface. Compared with the structure without the guide surface, the zipper pull of Patent Document 1 is easier to operate.

[0007] Additionally, the pull tab can be made to swing left and right around the axis. Furthermore, the swingability of the pull tab refers to the ability of the rear end of the pull tab to swing left and right around the axis, based on the state where the pull tab extends straight backward from the axis.

[0008] The purpose of this invention is to utilize a structure different from the one described above, which makes it easy to operate the pull tab when the zipper is open, and allows the pull tab to swing well in the left and right directions.

[0009] The zipper pull of the present invention comprises: a main body having a zipper tooth path formed internally; a pull tab; a stop claw disposed above the main body and capable of stopping the movement of the main body; and an elastic plate for pressing the stop claw downward. The pull tab is rotatable in the front-back direction and oscillating in the left-right direction, and has an axis at one end of the pull tab serving as the center of rotation and oscillation. The stop claw comprises: an axis pressing portion capable of pressing the axis from above; and a claw extending downward from the rear end of the axis pressing portion and capable of moving up and down within the zipper tooth path. The main body comprises: an upper wing plate that divides the upper side of the zipper tooth path and has a claw hole through which the claw passes; a lower wing plate that divides the lower side of the zipper tooth path; a connecting post that connects the front part of the upper wing plate and the front part of the lower wing plate; a front mounting portion and a rear mounting portion that protrude from the upper surface of the upper wing plate at a front-back interval and are used to mount the stop claw; and a guide portion that protrudes from the upper surface of the upper wing plate and guides the axis from the rear. The guide portion is disposed inside the left and right sides of the rear mounting portion. The front surface of the guide section guides the shaft from the rear. It is a guide surface that rises towards the rear and is positioned on the front side relative to the front surface of the rear mounting section.

[0010] The shape of the guide surface is arbitrary. For example, the guide surface can be tilted at a certain angle. To facilitate operation of the pull tab when the zipper is open, it is desirable to design it as follows.

[0011] When viewed from the side, with the front and back directions as a reference, the front part of the guide surface is the first slope, and the rear part of the guide surface is the second slope, which is relatively gentler than the first slope.

[0012] The shape of the front surface of the rear mounting section can be anything. For example, it can be parallel to the vertical direction. However, in order to facilitate the operation of the pull tab when the zipper is open, it is desirable to design it as follows.

[0013] The lower part of the front surface of the rear mount is a slope that rises towards the rear. Furthermore, when viewed from the side, the guide surface protrudes forward from a position lower than the upper end of the lower part of the front surface of the rear mount.

[0014] When viewed from the side, the distance between the lower part of the rear surface of the front mounting part and the lower part of the front surface of the rear mounting part in the front-rear direction is not necessarily constant. However, for ease of operation of the pull tab, it is desirable to set it as follows.

[0015] When viewed from the side, the distance between the lower part of the rear surface of the front mounting part and the lower part of the front surface of the rear mounting part in the front-rear direction increases as it moves upward.

[0016] The shape of the shaft can be anything. For example, it can be set as follows.

[0017] The reference state for the pull tab is defined as its extension in a straight line relative to the axial direction. Based on this, when viewed from above, the axis is either an arc shape bulging forward or a straight line extending to the left and right.

[0018] The elastic plate and the stop claw can be integrated or not. Furthermore, the shape of the shaft pressing part is also flexible. However, it is desirable to design it as follows.

[0019] The spring plate and the stop pawl are a single leaf spring. Furthermore, the shaft pressing part is designed to descend as it moves rearward.

[0020] Invention Effects

[0021] Because the guide surface of the zipper pull of the present invention is located on the front side relative to the front surface of the rear mounting part, the guide surface guides the shaft at a position further forward than the front surface of the rear mounting part, making it easy to operate the zipper pull when the zipper is open. Furthermore, since the guide part is positioned inside the left and right sides of the rear mounting part, the center of the zipper pull's left and right swing is located on the front surface of the guide part. Compared to the case without the guide part, the shaft is less likely to contact the rear mounting part, thus providing good left and right swing capability for the zipper pull. Attached Figure Description

[0022] Figure 1 This is an exploded perspective view showing the pull head of the first embodiment.

[0023] Figure 2 This is a top view showing the pull head of the first embodiment.

[0024] Figure 3 This is a side view showing the pull head of the first embodiment.

[0025] Figure 4 yes Figure 2 Sectional view along line IV-IV.

[0026] Figure 5 yes Figure 2 VV-line sectional view.

[0027] Figure 6 yes Figure 2 Sectional view along line VI-VI.

[0028] Figure 7 This is a top view representing the main subject.

[0029] Figure 8 This is the front view representing the main subject.

[0030] Figure 9 This is a side view representing the main body.

[0031] Figure 10This is a top view showing the pull tab of the first modified example.

[0032] Figure 11 This is a top view showing the main body of the first variant example.

[0033] Figure 12 This is a side view showing the main body of the first variant example.

[0034] Figure 13 This is the front view representing the main body of the first variant example.

[0035] Figure 14 This is a top view showing the main body of the second variation.

[0036] Figure 15 This is a side view showing the main body of the second variation.

[0037] Figure 16 This is the front view representing the main body of the second variation.

[0038] Figure 17 This is an exploded perspective view showing the pull head of the second embodiment.

[0039] Figure 18 This is a cross-sectional view showing the pull head of the second embodiment.

[0040] Figure 19 This is a top view showing the main body of the second embodiment.

[0041] Figure 20 This is an exploded perspective view showing the pull head of the third embodiment.

[0042] Figure 21 This is a cross-sectional view showing the pull head of the third embodiment.

[0043] Figure 22 This is a top view showing the main body of the third embodiment.

[0044] Explanation of reference numerals in the attached figures

[0045] 1, 1a, 1b: Slider head; 2, 2a, 2b, 201, 202: Main body; 21: Upper wing plate; h1: Claw hole; 22: Lower wing plate; 23: Connecting post; 24: Flange; 26: Chain tooth path; 27: Groove; 30, 301, 302: Front mounting part; 303: Platform; 304: Protrusion; 31, 311: Front wall; 32, 321: Outer front wall; 30b, 31b, 311b, 32b, 33b, 301b, 302b: Rear surface; 30u, 32u, 33u, 35u, 40u, 4 4u: Upper surface; 33, 331: Inner front wall; 35: Protrusion; 371: First central wall; 372: Second central wall; 373: Recess; 40, 401, 402: Rear mounting portion; 40f, 401f, 402f, 41f, 411f, 412f, 413f, 42f, 43f: Front surface; 41, 411, 412, 413: Rear wall; 42, 421, 422: Outer rear wall; 43, 431, 432: Inner rear wall; 44: Protruding wall; 461: Third central wall; 50, 50a 50b, 501, 502: Guide section; 41u, 42u, 43u, 50u: Upper surface; 50f, 50f1, 50f2, 501f, 502f: Guide surface; 50s: First inclined surface; 50t: Second inclined surface; 50w: Ridge; 50z: Valley; 6, 6a: Pull tab; 61, 61a: Connecting part; 62, 62a: Shaft; 63, 63a: Arm; 64: First joint; 65, 65a: Operating part; 67: Connecting component; 68: Operating component; 69: Second joint; h2: Hole 7, 7b: Stopping component; 8, 8a, 8b: Elastic plate; 81: Upper plate; 82: Extending plate; 83: Rear plate; 84: Connecting plate; 9, 9a, 9b: Stopping claw; 91, 91a, 91b: Shaft pressing part; 911: Longitudinal piece; 912: Front piece; 913: Rear piece; h3: Hole; 92, 92a, 92b: Claw; 93: Front pressing part; 94: Rear pressing part; 95: Front part; 96: Rear part; 97: Hook part; 11, 11b: Cover; G, G1: Spacing; L1, L2: Baseline; P: Bending part. Detailed Implementation

[0046] As is well known, a zipper has a pair of zipper teeth and a slider to open and close the pair of zipper teeth. The pair of zipper teeth has a pair of opposing straps and a pair of teeth fixed to opposite side edges of the pair of straps.

[0047] The pull head is what engages and disengages a pair of chain teeth. Figure 1 The first embodiment of the zipper pull 1 is shown. The zipper pull 1 includes a main body 2 for engaging and disengaging a pair of chain teeth, a pull tab 6 for operating the main body 2, and a stop member 7 for stopping the movement of the main body 2 by elastic force.

[0048] The orientation is determined below, with the zipper placed on a flat surface as a reference.

[0049] "Back-to-back direction" refers to the direction in which the zipper pull 1 moves. "Back-to-back direction" also refers to the direction in which the pull tab 6 rotates above the main body 2 when the zipper teeth open and close. "Forward direction" refers to the direction in which the zipper pull 1 moves when the zipper is closed. Figure 2 In the diagram, "forward direction" refers to the upward direction. "Backward direction" refers to the direction in which the zipper pull 1 moves when the zipper is opened. Figure 2 In the middle, "backward direction" is the downward direction.

[0050] "Left and right directions" refers to the opposite direction of a pair of chain teeth. "Left direction" is... Figure 2 The left direction is consistent with the right direction. Figure 2 The rightward direction is consistent with the leftward direction. Furthermore, the left-right direction is orthogonal to the front-back direction. The left-right direction is the direction in which the pull tab 6 swings above the main body 2.

[0051] The "up-down direction" is a direction orthogonal to the front-back and left-right directions. Figure 2 The direction perpendicular to the paper in the diagram. "Up direction" is the direction perpendicular to the paper. Figure 2 The direction orthogonal to the paper in the middle is the direction facing closer to the front. "Downward direction" and... Figure 2 The direction that is orthogonal to the paper in the middle is the direction that faces inward.

[0052] In addition, in each diagram, the forward direction is represented by F, the backward direction by B, the left direction by L, the right direction by R, the up direction by U, and the down direction by D.

[0053] "Radial direction" is as follows Figure 3 The direction of the straight line connecting the center of the semicircle to a point on the semicircle is based on the imaginary semicircle when the pull tab 6 rotates forward and backward as shown.

[0054] like Figures 1-3 As shown, the pull tab 6 has a connecting part 61 that is connected to the stop member 7, and an operating part 65 that is pinched during operation.

[0055] The operating part 65 extends outward in the radial direction from the connecting part 61. The inner end of the operating part 65 in the radial direction cooperates with the connecting part 61 to form a ring.

[0056] The connecting part 61 includes a shaft 62 extending in a straight line from left to right, and a pair of arms 63 that engage the left and right ends of the shaft 62 with the operating part 65. The pair of arms 63 extend in a radial direction.

[0057] Shaft 62 is the center of rotation and oscillation of pull tab 6. The state in which pull tab 6 extends backward in a straight line relative to shaft 62 is defined as the reference state of pull tab 6. In the reference state, pull tab 6 is placed on body 2.

[0058] like Figures 6-9 As shown, the main body 2 includes: an upper wing plate 21 and a lower wing plate 22 that are vertically opposite each other; a connecting post 23 that connects the front part of the upper wing plate 21 and the front part of the lower wing plate 22 at the middle part in the left-right direction; a flange 24 that protrudes from the left and right edges of the upper wing plate 21 and the lower wing plate 22 in a direction that narrows the distance between them in the left-right direction; a front mounting part 30 and a rear mounting part 40 that protrude from the upper surface of the upper wing plate 21 at a distance from front to back and are used to mount the stop member 7; and a pair of guide parts 50 that protrude from the upper surface of the upper wing plate 21 between the front mounting part 30 and the rear mounting part 40.

[0059] The main body 2, as its internal space, includes a tooth path 26 through which a pair of tooth rows pass, and a pair of belt grooves 27 communicating with the tooth path 26 and through which the belt passes. The tooth path 26 is divided vertically by an upper flange 21 and a lower flange 22, and horizontally by left and right flanges 24 of the upper flange 21 and the lower flange 22. The tooth path 26 extends through the front and rear. The front side of the tooth path 26 consists of a pair of branch paths that branch left and right relative to the connecting post 23. The rear side of the tooth path 26 consists of a merging path that is a straight path extending rearward from the connecting post 23, where the pair of branch paths converge. The belt grooves 27 are formed between the pair of upper and lower opposing flanges 24.

[0060] The front mounting portion 30 includes a pair of front walls 31 that protrude from the upper surface of the upper wing plate 21 and are opposite each other, and a protrusion 35 that protrudes from the upper surface of the upper wing plate 21 between the pair of front walls 31 (see reference). Figure 5 The protrusion 35 is located on the front side before a pair of front walls 31. The pair of front walls 31 have a pair of outer front walls 32 facing each other on the left and right, and a pair of inner front walls 33 facing each other on the left and right sides inside the pair of outer front walls 32. The front walls 31 are in the form of joining the inner front walls 33 relative to the outer front walls 32 on the left and right inner sides (central side).

[0061] like Figure 4 , Figure 5As shown, the upper surface 32u of the outer front wall 32 is positioned above the upper surface 33u of the inner front wall 33 in a layered manner. The upper surface 33u of the inner front wall 33 is positioned above the upper surface 35u of the protrusion 35. The rear surface 32b of the outer front wall 32 is positioned rearward compared to the rear surface 33b of the inner front wall 33. In a side view, the outer front wall 32 obscures the rear surface 33b of the inner front wall 33. In this embodiment, in a side view, the rear surface 32b of the outer front wall 32 is the rear surface 31b of the front wall 31, which is the rear surface 30b of the front mounting portion 30. In a side view, the upper part of the rear surface 31b of the front wall 31 is approximately parallel to the vertical direction. The lower part of the rear surface 31b of the front wall 31 is inclined relative to the vertical direction in a manner that faces rearward as it faces downward. The lower part of the rear surface 31b of the front wall 31 is the lower part of the rear surface 30b of the front mounting portion 30.

[0062] like Figure 7 , Figure 8 As shown, the rear mounting portion 40 has a pair of left-right opposing rear walls 41. Each pair of rear walls 41 has a pair of left-right opposing outer rear walls 42 and a pair of left-right opposing inner rear walls 43 on the inner sides of the outer rear walls 42. The rear mounting portion 40 is configured to join the inner rear walls 43 to the rear portions of the outer rear walls 42 on the left-right inner sides. Figure 7 The inner rear wall 43 (right side) has an inner side extending to the left and right at a position further forward than the rear end. Figure 7 The protruding wall 44 extends from the left side of the middle.

[0063] like Figure 4 , Figure 5 As shown, the upper surface 42u of the outer rear wall 42 is positioned above the upper surface 43u of the inner rear wall 43 in a layered manner. The front surface 42f of the outer rear wall 42 is positioned in front of the front surface 43f of the inner rear wall 43. In a side view, the outer rear wall 42 obscures the front surface 43f of the inner rear wall 43. In this embodiment, in a side view, the front surface 42f of the outer rear wall 42 is the front surface 41f of the rear wall 41, and is the front surface 40f of the rear mounting portion 40. In a side view, the upper part of the front surface 41f of the rear wall 41 is approximately parallel to the vertical direction. The lower part of the front surface 41f of the rear wall 41 is inclined relative to the vertical direction in a form that faces forward as it moves downward. In other words, the lower part of the front surface 40f of the rear mounting portion 40 is an inclined surface that rises as it moves rearward.

[0064] like Figure 9As shown, the lower part of the front surface 41f of the rear wall 41 is an inclined plane that slopes approximately in a straight line with the front-rear direction as a reference. With the front-rear direction as a reference, the inclination angle θ0 of the lower part of the front surface 41f of the rear wall 41 is 45 degrees to 65 degrees. The lower part of the front surface 41f of the rear wall 41 is the lower part of the front surface 40f of the rear mounting part 40. The distance G between the lower part of the front surface 40f of the rear mounting part 40 and the lower part of the rear surface 30b of the front mounting part 30 in the front-rear direction increases as it faces upwards.

[0065] A pair of guides 50 guide the shaft 62 from the rear. For example... Figure 7 As shown, a pair of guide portions 50 are positioned opposite each other and are arranged inside the left and right sides of the rear mounting portion 40. Regarding the left side of the main body 2, the guide portion 50 is formed to engage with the front portion and the inner left and right sides (right side) of the outer rear wall 42. Similarly, regarding the right side of the main body 2, the guide portion 50 is formed to engage with the front portion and the inner left and right sides (left side) of the outer rear wall 42. Figure 7 In this diagram, a pair of first reference lines L1 and a pair of second reference lines L2 are shown as imaginary lines parallel to the front-rear direction. The pair of first reference lines L1 are straight lines extending from the outermost ends of the left and right sides of the rear mounting portion 40. Specifically, the pair of first reference lines L1 are straight lines extending from the leftmost end of the left side of the left rear wall 41 and from the rightmost end of the right side of the right rear wall 41. The pair of second reference lines L2 are straight lines extending from the leftmost end of the left side of the left guide portion 50 and from the rightmost end of the right side of the right guide portion 50. The pair of second reference lines L2 are located inside the pair of first reference lines L1 in the left-right direction.

[0066] like Figure 4 As shown, the upper surface 50u of the guide portion 50 is lower than the upper surface 40u of the rear mounting portion 40 and the upper surface 30u of the front mounting portion 30. More specifically, the upper surface 50u of the guide portion 50 is lower than the upper surface 33u of the inner front wall 33 and the upper surface 43u of the inner rear wall 43. With the pull tab 6 in the reference state, the upper surface 50u of the guide portion 50 is lower than the upper end of the shaft 62.

[0067] like Figure 4 , Figure 5 , Figure 9As shown, the front surface of the guide portion 50 is a guide surface 50f that guides the shaft 62 from the rear. The guide surface 50f is positioned in front of the front surface 40f (front surface 41f of the rear wall 41) of the rear mounting portion 40. That is, the left and right guide portions 50 have portions that protrude forward compared to the rear mounting portion 40. In addition, relative to the portions of the left and right guide portions 50 that protrude forward compared to the front surface 40f of the rear mounting portion 40, no portion protrudes upward from the upper wing plate 21 on the outer side in the left and right directions, meaning there is space provided. When the pull tab 6 is not operated, the shaft 62 is positioned between the pair of guide surfaces 50f and the front mounting portion 30. The guide surfaces 50f rise towards the rear. In a side view, based on the front-to-back direction, the guide surfaces 50f are inclined surfaces. The guide surfaces 50f have a first inclined surface 50s located at the front and a second inclined surface 50t located at the rear. Both the first inclined plane 50s and the second inclined plane 50t are inclined planes with approximately a straight line relative to the front-back direction. The first inclined plane 50s and the second inclined plane 50t are continuous. The first inclined plane 50s is located below the second inclined plane 50t. The second inclined plane 50t is a gentler slope relative to the first inclined plane 50s. Using the front-back direction as a reference, the inclination angle θ1 of the first inclined plane 50s is 40 degrees to 60 degrees. The inclination angle θ2 of the second inclined plane 50t is 30 degrees to 50 degrees. For example... Figure 9 As shown, the inclination angle θ1 of the first inclined surface 50s is larger than the inclination angle θ2 of the second inclined surface 50t, and smaller than the inclination angle θ0 of the lower part of the front surface 41f of the rear wall 41. The gap G1 between the guide surface 50f and the lower part of the rear surface 31b of the front wall 31 forms the space for receiving the shaft 62. For example, compared to the case where the entire guide surface 50f is formed with the inclination angle θ2 of the second inclined surface 50t, this gap G1 is larger corresponding to the fact that the first inclined surface 50s is a steeper inclined surface than the second inclined surface 50t.

[0068] like Figures 4-7 As shown, the upper wing plate 21 guides the upper surface of a pair of chain teeth. The lower wing plate 22 guides the lower surface of a pair of chain teeth. The upper wing plate 21 and the lower wing plate 22 are configured such that the front extends to the left and right relative to the rear. A claw hole h1 is formed in the upper wing plate 21, extending through in the vertical direction. The claw hole h1 is located between a pair of rear walls 41, offset to the left or right relative to the left and right center of the upper wing plate 21. The claw hole h1 is located between the guide portion 50 and the inner rear wall 43 in the front-rear direction.

[0069] The stop component 7 is a leaf spring. The stop component 7 includes a spring plate 8 extending in the front-rear direction and a stop claw 9 extending from and located below the spring plate 8. The stop component 7 is a single component that integrates the spring plate 8 and the stop claw 9. A pair of rear walls 41 are arranged on the left and right sides relative to the stop claw 9.

[0070] The elastic plate 8 presses the stop claw 9 downwards. The elastic plate 8 includes: an upper plate 81 that is long in the front-rear direction; a pair of protruding plates 82 that extend to the left and right from the middle portion of the upper plate 81 in the front-rear direction; a rear plate 83 that extends downwards from the rear end of the upper plate 81; and a connecting plate 84 that extends downwards from the front end of the upper plate 81. The pair of protruding plates 82 are positioned between the outer front wall 32 and the outer rear wall 42 on their corresponding left and right sides. The upper plate 81 is placed on the pair of inner front walls 33 and the pair of inner rear walls 43, and the elastic plate 8 is installed on the front mounting portion 30 and the rear mounting portion 40 by plastically deforming the upper ends of the pair of outer front walls 32 and the pair of outer rear walls 42 in a manner that narrows the left and right interval. The connecting plate 84 extends from the left and right center portions of the front end of the upper plate 81. The rear plate 83 is configured to cover the rear surface of the protruding wall 44 from the rear. As a result, the rear plate 83 hooks onto the protruding wall 44. When viewed from the side, the connecting plate 84 is C-shaped with an opening facing rearward. The stop claw 9 is continuous with the lower end of the connecting plate 84.

[0071] The front portion of the stop pawl 9 is disposed between a pair of front walls 31 with a gap. The rear portion of the stop pawl 9 is disposed between a pair of rear walls 41 with a gap. In this state, the stop pawl 9 is mounted on the front mounting portion 30 and the rear mounting portion 40. The stop pawl 9 enables the main body 2 to stop and move relative to the chain teeth. The stop pawl 9 is elastic and can move up and down with the engaging plate 84 as a fulcrum. After the stop pawl 9 is displaced upward, it is pressed downward by the elastic plate 8 with the engaging plate 84 as a fulcrum. The stop pawl 9 includes: a shaft pressing portion 91 extending rearward from the engaging plate 84 and capable of pressing the shaft 62 from above; and a pawl 92 extending downward from the rear end of the shaft pressing portion 91.

[0072] The shaft pressing part 91 is positioned below the upper plate 81. The left-right width of the shaft pressing part 91 is narrower than that of the upper plate 81. The rear end of the shaft pressing part 91 is located in front of the rear end of the upper plate 81. The shaft pressing part 91 includes a front pressing part 93 extending rearward from the connecting plate 84 and a rear pressing part 94 extending rearward from the front pressing part 93 and reaching the claw 92. The rear pressing part 94 extends to the left and right relative to the front pressing part 93. In a side view, the front pressing part 93 and the rear pressing part 94 are continuous in a curved form. In the reference state of the pull tab 6, when the stop claw 9 is viewed from the side, both the front pressing part 93 and the rear pressing part 94 are inclined relative to the front-back direction. The inclination of the front pressing part 93 is such that it decreases as it moves forward. The inclination of the rear pressing part 94 is such that it decreases as it moves rearward. The rear pressing part 94 is the part that presses the shaft 62 from above. In other words, when viewed from the side, the shaft pressing part 91 is in a form where the portion pressing the shaft 62 descends towards the rear. More specifically, when viewed from the side, the rear pressing part 94 is curved. The curved portion P of the rear pressing part 94 is opposite to the upper surface 50u of the guide portion 50. The front portion 95 of the rear pressing part 94 is located in front of the curved portion P. The rear portion 96 of the rear pressing part 94 is located in rear of the curved portion P. Based on the front-to-back direction, the rear portion 96 of the rear pressing part 94 descends at a steeper angle towards the rear compared to the front portion 95 of the rear pressing part 94.

[0073] Claw 92 passes through claw hole h1. The tip (lower end) of claw 92 is offset to the left or right compared to the center of shaft pressing part 91. In the reference state of pull tab 6, the tip of claw 92 is located at chain tooth path 26, and stops the pull head 1 by contacting the chain tooth row. That is to say, claw 92 can move up and down in chain tooth path 26.

[0074] The zipper pull 1 of the first embodiment has the following effects. The guide surface 50f is an inclined surface that rises towards the rear. The guide surface 50f is located in front of the front surface 40f (the front surface 41f of the pair of rear walls 41) of the rear mounting portion 40, thus guiding the shaft 62 at a position further forward than the front surface 41f of the pair of rear walls 41. As a result, the zipper pull 1 of the first embodiment is easier to operate when opening the zipper than when there is no guide surface 50. Moreover, since the guide surface 50 is disposed inside the left and right sides of the rear mounting portion 40, the center of the zipper pull 6 when swinging left and right is located at the guide surface 50f, and compared with the case without the guide surface 50, the shaft 62 is less likely to contact the pair of rear walls 41, thus the zipper pull 6 has good left and right swinging ability.

[0075] Since the front part of the guide surface 50f is the first inclined surface 50s, which is steeper than the second inclined surface 50t, the gap G1 between the guide surface 50f and the lower part of the rear surface 31b of the front wall 31 is larger than that of the case where the entire guide surface 50f is formed with an inclined surface at the same angle as the second inclined surface 50t, thus stably accommodating the shaft 62. When the zipper is open, pulling the pull tab backward causes the shaft 62 to move backward. Since the rear part of the guide surface 50f is the second inclined surface 50t, which is gentler than the first inclined surface 50t, the force of pulling the pull tab 6 backward is easily converted directly into the backward movement of the shaft 62 compared to the case where the second inclined surface 50t is as steep as the first inclined surface 50t. As a result, it is easy to operate the pull tab 6.

[0076] The pull tab is pulled further rearward. As a result, since the guide surface 50f protrudes forward from a position lower than the upper end of the lower part of the front surface 40f of the rear mounting portion 40 (the front surface 41f of the pair of rear walls 41), the shaft 62 is guided from the second inclined surface 50t to the lower part of the front surface 41f of the pair of rear walls 41. Because the lower part of the front surface 41f of the pair of rear walls 41 is an inclined surface that rises towards the rear, the shaft 62 easily rises. As a result, the claw 92 easily rises and easily separates from the chain teeth.

[0077] When viewed from the side, the distance G in the front-to-back direction between the lower part of the rear surface 30b of the front mounting part 30 and the lower part of the front surface 40f of the rear mounting part 40 increases as it moves upward. Therefore, if the shaft 62 is displaced upward, it is easy to move forward and backward, and it is easy to operate the pull tab 6.

[0078] Figure 10 The pull tab 6a of the first modified example is shown. The pull tab 6a of the first modified example has a connecting part 61a and an operating part 65a.

[0079] The connecting part 61a has a shaft 62a and a pair of arms 63a.

[0080] Compared to the reference state of the pull tab 6a, the shaft 62a, when viewed from above, is an arc shape that bulges forward. This forward bulge refers to the shape that extends forward from both ends of the shaft 62a towards its center. Because the shaft 62a is arc-shaped, it is easier to swing the pull tab 6 to the left and right compared to a straight line.

[0081] Furthermore, the pull tab 6a is formed by integrating the connecting member 67, which includes the connecting part 61a, and the operating member 68, which includes the operating part 65a.

[0082] The connecting member 67 includes a connecting portion 61a and a first joint portion 64 extending outward in a radial direction from the connecting portion 61a.

[0083] The operating component 68 includes an operating portion 65a and a second engaging portion 69 extending from the operating portion 65a toward the inner side in the radial direction.

[0084] The first joint 64 engages with the second joint 69. The engagement is, for example, insert molding. The operating part 68 is injection molded by setting the connecting part 67 as an insert and injecting resin into the mold. To ensure a firm engagement, a through hole h2 in the vertical direction is formed in the first joint 64 in the figure.

[0085] like Figures 11-13 As shown, the main body 2a of the first modified example differs from the main body 2 described earlier in that the guide portion 50a is different. The guide portion 50a is disposed between a pair of outer rear walls 42 with a gap in the left-right direction.

[0086] The guide portion 50a is a triangular pyramid. It has a base and a top (upper surface 50u). Viewed from above, the base is triangular. The left and right sides of the base slope outwards relative to the front-back direction as it faces backwards. The guide portion 50a is bilaterally symmetrical. Viewed from above, the top 50u is elliptical and is located further back than the center of the base. Viewed from the side, the guide surface 50f1 is a straight inclined surface. The inclination angle θ4 of the guide surface 50f is between 30 and 60 degrees.

[0087] like Figures 14-16 As shown, the main body 2b of the second modification is the same as the main body 2a of the first modification in terms of the guide portion 50b. However, when viewed from above, the guide portion 50b has a bottom surface with a rectangular side recess, a top (upper part 50u) that is elongated to the left and right, a pair of ridges 50w extending from the left and right ends of the top 50u toward a pair of corners on the front side of the bottom, and a valley 50z between the pair of ridges 50w.

[0088] On the bottom surface, the left and right sides are parallel to the front and back, the back side is parallel to the left and right, and the center of the front side is concave to the rear in an arc shape. The concavity of the front side is such that it protrudes forward from the center of the left and right sides towards the two ends of the left and right sides.

[0089] The top 50u is concave in an arc shape when viewed from the rear. The top 50u rises from the center on the left and right sides toward the two ends on the left and right.

[0090] The front surface of the ridge 50w is the guide surface 50f2. When viewed from the side, the guide surface 50f2 is the same as the guide surface 50f1 in the first modified example. The valley 50z also rises in the rearward direction. The valley 50z is concave in the left-right direction, decreasing in height from both ends towards the center.

[0091] like Figures 17-19 As shown, the zipper pull 1a of the second embodiment, in addition to the main body 201 and the pull tab 6, also has a stop claw 9a and an elastic plate 8a as separate components instead of the stop member 7, and also has a cover 11, which are different from the zipper pull 1 of the first embodiment.

[0092] In the main body 201, the front mounting part 301 and the rear mounting part 401 are different from the front mounting part 30 and the rear mounting part 40 of the first embodiment, and the position of the guide part 501 in the left-right direction is different from the guide part 50 of the first embodiment.

[0093] The front mounting portion 301 includes a pair of opposing front walls 311, a first central wall 371 that joins the front portions of the pair of front walls 311 together, and a second central wall 372 that joins the rear portions of the pair of front walls 311 together. The first central wall 371 and the second central wall 372 protrude from the upper surface of the upper wing plate 21. An upwardly opening recess 373 is formed by the first central wall 371, the second central wall 372, the pair of front walls 311, and the upper wing plate 21. That is, a recess 373 is formed on the upper surface of the front mounting portion 301.

[0094] The front wall 311 includes an outer front wall 321 and an inner front wall 331. The inner front wall 331 extends in the front-rear direction. The outer front wall 321 extends laterally from the rear of the inner front wall 331. The rear surface of the outer front wall 321 is located rearward compared to the rear surface of the inner front wall 331. In a side view, the rear surface of the outer front wall 321 is the rear surface 311b of the front wall 311, which is the rear surface 301b of the front mounting portion 301.

[0095] The rear mounting portion 401 includes a pair of rear walls 411 and 412 facing each other on the left and right sides at the front, and a third central wall 461 extending from the rear end of one of the rear walls 411 toward the center on the left and right sides. The third central wall 461 protrudes from the upper surface of the upper wing plate 21 at a position rearward of the claw hole h1. The right rear wall 412 is located to the right of the claw hole h1. The left rear wall 411 extends rearward from the left side of the claw hole h1 compared to the right rear wall 412. Specifically, the left rear wall 411 includes an outer rear wall 421 and an inner rear wall 431. The inner rear wall 431 is longer than the outer rear wall 421 in the front-rear direction. The outer rear wall 421 extends to the left from the front of the inner rear wall 431.

[0096] The right rear wall 412 has the same shape as the left outer rear wall 421. That is, the right rear wall 412 is formed only by the outer rear wall 421. The front surface of the outer rear wall 421 and the front surface of the right rear wall 412 are the front surface 401f of the rear mounting portion 401. The front surface 401f of the rear mounting portion 401 is the front surface 411f of the left rear wall 411 and the front surface 412f of the right rear wall 412, and has the same shape as the front surface 40f of the rear mounting portion 40 in the first embodiment.

[0097] The guide portion 501 protrudes forward from the inner rear wall 431. Therefore, the guide portion 501 is positioned inside the left and right sides of the rear mounting portion 40. As a result, a pair of second reference lines L2 are located inside the pair of first reference lines L1. In a side view, the guide surface 501f is identical to the guide surface 50f1 of the first modified example.

[0098] The elastic plate 8a is a flat leaf spring. Viewed from above, the front end of the elastic plate 8a is U-shaped and opens forward, while the rear end is U-shaped and opens backward. The elastic plate 8a is fixed to the inner surface of the cover 11. Therefore, portions that fix the front and rear ends of the elastic plate 8a are formed on the front and rear parts of the inner surface of the cover 11.

[0099] The cover 11 is hollow and opens downwards. When viewed from the side, the cover 11 is a U-shaped opening opening downwards. The cover 11 covers the front mounting portion 301 from top, front, left, and right on the front side of one pair of outer front walls 321, and covers the rear mounting portion 401 from top, rear, left, and right on the rear side of one pair of outer rear walls 421. In this state, the front and rear portions of the cover 11 are plastically deformed respectively, and fixed to the front mounting portion 301 and the rear mounting portion 401. The front mounting portion 301 and the rear mounting portion 401 are located below the elastic plate 8a.

[0100] In addition to the shaft pressing part 91a and the claw 92a, the stop claw 9a also has a hook part 97 extending downward from the front end of the shaft pressing part 91a. The thickness direction of the stop claw 9a is the left-right direction. The stop claw 9a is a rigid body that cannot elastically deform in the vertical direction. The hook part 97 is received in the recess 373. When the stop claw 9a is pressed downward by the elastic plate 8a, it can swing up and down in the vertical direction with the hook part 97 as the fulcrum. As a result, the claw 92a can move up and down.

[0101] The zipper pull 1b of the third embodiment differs from the zipper pull 1 of the first embodiment in that, in addition to the main body 202 and the pull tab 6, it also has a stop member 7b and a cover 11b.

[0102] In the main body 202, the front mounting part 302 and the rear mounting part 402 are different from the front mounting part 30 and the rear mounting part 40 of the first embodiment, and the pair of guide parts 502 are different from the pair of guide parts 50 of the first embodiment.

[0103] The front mounting section 302 includes: a platform 303 that protrudes upward from the upper surface of the upper wing plate 21 and mounts the stop member 7b; and a protrusion 304 that protrudes from the upper surface of the platform 303 and is used to position the stop member 7b. In a side view, the rear surface of the platform 303 is the rear surface 302b of the front mounting section 302.

[0104] The rear mounting portion 402 includes a pair of rear walls 413 and a third central wall 461 that joins the rear portions of the pair of rear walls 413 to each other. Each rear wall 413 includes an outer rear wall 422 and an inner rear wall 432. The inner rear wall 432 extends in the front-rear direction. The outer rear wall 422 extends laterally from the front portion of the inner rear wall 432. The front surface of the outer rear wall 422 is the front surface 413f of the rear wall 413, and is the front surface 402f of the rear mounting portion 402. The front surface 402f of the rear mounting portion 402 has the same shape as the front surface 40f of the rear mounting portion 40 in the first embodiment.

[0105] The guide portion 502 protrudes forward from the front surface of the inner rear wall 432 and extends inward to the left and right sides. A pair of guide portions 502 are positioned inward relative to the left and right sides of the rear mounting portion 402. As a result, a pair of second reference lines L2 are located inward relative to a pair of first reference lines L1. In a side view, the guide surface 502f is identical to the guide surface 50f1 of the first modified example.

[0106] The stop component 7b is a leaf spring. The stop component 7b includes a stop pawl 9b and a spring plate 8b. When viewed from the side, the stop pawl 9b is L-shaped. The stop pawl 9b includes a shaft pressing part 91b and a pawl 92b.

[0107] Viewed from above, the shaft pressing portion 91b is an elongated ring in the front-to-back direction. A through hole h3 is formed on the inner surface of the shaft pressing portion 91b in the vertical direction. The shaft pressing portion 91b includes a pair of opposing longitudinal pieces 911, a front piece 912 that joins the front ends of the pair of longitudinal pieces 911, and a rear piece 913 that joins the rear ends of the pair of longitudinal pieces 911. The front piece 912 and the rear piece 913 extend downwards from the longitudinal pieces 911. That is, the front piece 912 and the rear piece 913 are bent relative to the longitudinal pieces 911. As a result, viewed from the side, the shaft pressing portion 91b is a downwardly opening U-shape. A protrusion 304 is inserted through the hole h3, hooking the front piece 912 onto the front surface of the protrusion 304, thereby positioning the front part of the shaft pressing portion 91b.

[0108] Claw 92b extends downward from the middle of the left and right sides of the rear piece 913.

[0109] The elastic plate 8b is an elongated sheet extending in the front-rear direction. The elastic plate 8b extends upward from the shaft pressing part 91b as it moves forward from the middle of the left and right sides of the rear piece 913. The front end of the elastic plate 8b is pressed from above by the inner surface of the cover 11b, thereby pressing the claw 92 downward.

[0110] This invention is not limited to the above-described embodiments and can be appropriately modified without departing from its spirit. For example, when viewed from the side, the guide surface can also be a convex, arc-shaped slope, as long as it rises towards the rear.

Claims

1. A puller for a slide fastener, characterized by comprising: a main body (2, 2a, 2b, 201, 202) in which a chain tooth path (26) is formed inside; a pull tab (6, 6a); a stopper pawl (9, 9a, 9b) disposed above the main body (2, 2a, 2b, 201, 202) and capable of stopping movement of the main body (2, 2a, 2b, 201, 202); and an elastic plate (8, 8a, 8b) that presses the stopper pawl (9, 9a, 9b) downward, the pull tab (6, 6a) is rotatable in a front-rear direction and swingable in a left-right direction, and an axis (62, 62a) that serves as a center of rotation and swing is provided at one end portion of the pull tab (6, 6a), the stopper pawl (9, 9a, 9b) includes an axis pressing portion (91, 91a, 91b) that can press the axis (62, 62a) from above, and a pawl (92, 92a, 92b) that extends downward from a rear end of the axis pressing portion (91, 91a, 91b) and is movable up and down within the chain tooth path (26), the main body (2, 2a, 2b, 201, 202) includes an upper wing plate (21) that divides an upper side of the chain tooth path (26) and in which a pawl hole (hi) through which the pawl (92, 92a, 92b) passes is formed, a lower wing plate (22) that divides a lower side of the chain tooth path (26), a link column (23) that links a front portion of the upper wing plate (21) and a front portion of the lower wing plate (22), a front mounting portion (30, 301, 302) and a rear mounting portion (40, 401, 402) that protrude from an upper surface of the upper wing plate (21) at intervals in a front-rear direction and are used to mount the stopper pawl (9, 9a, 9b), and a guide portion (50, 50a, 50b, 501, 502) that protrudes from the upper surface of the upper wing plate (21) and guides the axis (62, 62a) from the rear, the guide portion (50, 50a, 50b, 501, 502) is disposed inward with respect to side surfaces of the left and right of the rear mounting portion (40, 401, 402), a front surface of the guide portion (50, 50a, 50b, 501, 502) that guides the axis (62, 62a) from the rear is a guide surface (50f, 50f1, 50f2, 501f, 502f) that rises toward the rear, and is disposed forward with respect to a front surface (40f, 401f, 402f) of the rear mounting portion (40, 401, 402).

2. The puller for a slide fastener according to claim 1, characterized in that, in a side view, a front portion of the guide surface (50f) is a first inclined surface (50s) with respect to a front-rear direction, and a rear portion of the guide surface (50f) is a second inclined surface (50t) that is relatively gentle with respect to the first inclined surface (50s).

3. The puller for a slide fastener according to claim 1 or 2, characterized in that, ​ The lower portion of the front surface (40f, 401f, 402f) of the rear mounting portion (40, 401, 402) is a slope that rises toward the rear, The guide surface (50f, 50f1, 50f2, 501f, 502f) protrudes forward from a position lower than the upper end of the lower portion, in a side view.

4. The slider for a fastener according to claim 3, wherein The lower portion of the rear surface (30b, 301b, 302b) of the front mounting portion (30, 301, 302) and the lower portion of the front surface (40f, 401f, 402f) of the rear mounting portion (40, 401, 402) are spaced apart in the front-rear direction, in a side view, and the spacing (G) between the lower portions increases toward the upper side.

5. The slider for a fastener according to claim 4, wherein A state in which the pull tab (6a) extends rearward in a straight line with respect to the shaft (62a) is defined as a reference state of the pull tab (6a), The shaft (62a) is a circular arc shape that bulges toward the front, in a plan view.

6. The slider for a fastener according to claim 4, wherein A state in which the pull tab (6) extends rearward in a straight line with respect to the shaft (62) is defined as a reference state of the pull tab (6), The shaft (62) is a straight line shape that extends left and right.

7. The slider for a fastener according to claim 4, wherein The elastic plate (8, 8b) and the stopper pawl (9, 9b) are an integral plate spring, The shaft pressing portion (91, 91b) is a form that descends toward the rear.

Images