Pull tab for slide fastener and slider for slide fastener

Abstract

A pull tab (3, 3A) for a slide fastener is attached to a slider main body (2) so as to be rotatable within a prescribed angular range. The pull tab includes: a shaft portion 31 serving as a rotation center; a pair of connecting rods 32 that extend from the shaft section to the outside in the radial direction centered on the shaft section, and that face each other in the axial direction of the shaft section; a lifting knob part 33 connected with the pair of connecting rods on the side opposite to the shaft part; and an opening (35) formed on the inner side of a portion where the shaft portion, the pair of connecting rods, and the lifting knob portion are annularly joined. In addition, the pull tab includes tabs (34, 34A) that protrude from the shaft portion to the outside in the radial direction centered on the shaft portion between the pair of connecting rods in the range in the axial direction. The tab is a synthetic resin plate spring that is elastically deformable in a rotational direction centered on the shaft portion. The tab prevents the pull tab from shaking in the rotational direction.

Description

Technical Field

[0001] The present invention relates to a pull tab for a zipper and a slider for a zipper. Background Art

[0002] The pull tab of a zipper is attached to the main body of the zipper so that it can rotate within a specified angle range. If an external force such as vibration is applied to the product to which the zipper is attached, the pull tab will shake in the direction of rotation and repeatedly collide with the main body of the zipper, producing a sound with each collision.

[0003] Patent document 1 discloses an example of a slider for preventing such shaking. This slider includes: a pull tab called a knob, a pointer for engaging and disengaging a pair of chain element rows, and a buckle fixed to the upper surface of the pointer. A window for passing the buckle is formed on the pull tab. In addition, the pull tab has an end portion that serves as a rotation center. Moreover, a notch is formed in the left and right central portions of the end portion, which is recessed toward the side opposite to the window. For ease of explanation, the space formed between the upper surface of the pointer and the buckle is referred to as an axial hole, and the portion extending from the left and right side portions of the end portion along the left and right sides of the window is referred to as a pair of connecting rods. In addition, bosses protrude upward and downward on the left and right side portions of the end portion so as to thicken the thickness of the pull tab. The left and right side portions of the end portion protrude toward the side opposite to the window through the notch. In more detail, the left and right side portions of the end portion are formed within the range of each connecting rod with respect to the range in the axial direction that serves as the center when the end portion rotates.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent No. 3050409 Summary of the Invention

[0007] Problems to be solved by the invention

[0008] The left and right side portions or bosses of the end portion are designed to position the pull tab in a desired position based on the vertical dimension of the shaft hole.

[0009] With respect to the extension line of the connecting rod extending left and right along the window, the dimensions of the left and right side portions of the end portion are longer than the dimensions of the shaft hole in the vertical direction. The end portion is formed of an elastic plastic material so that the pull tab can rotate relative to the buckle regardless of this dimension. As a result, when the pull tab is operated, the pull tab is maintained in an upright position relative to the upper surface of the main body or returns to a lying position, depending on the release posture of the pull tab at the end of the operation. In addition, when the pull tab is in a lying position, the vertical dimension after adding the end portion and the boss is designed to be longer than the vertical dimension of the shaft hole, so that the pull tab in the lying position will not shake in the rotation direction.

[0010] The present invention is created in consideration of the above-mentioned actual situation, and uses a structure different from that of Reference 1 to prevent the pull-tab from shaking in the rotation direction.

[0011] Technical means to solve the problem

[0012] The pull tab for a zipper of the present invention is mounted on the slider body in a manner that allows it to rotate within a specified angular range. The pull tab includes: a shaft portion serving as a rotation center; a pair of connecting rods extending from the shaft portion to the outside in the radial direction with the shaft portion as the center and facing each other in the axial direction of the shaft portion; a button portion connected to the pair of connecting rods on the side opposite to the shaft portion; an opening formed on the inner side of the portion where the shaft portion, the pair of connecting rods, and the button portion are annularly joined; and a protrusion protruding from the shaft portion to the outside in the radial direction with the shaft portion as the center, between the pair of connecting rods, in terms of the range in the axial direction. Moreover, the protrusion is a leaf spring made of synthetic resin that can be elastically deformed in the rotation direction with the shaft portion as the center. The above are the characteristics of the pull tab for a zipper of the present invention.

[0013] The thickness of the protrusion is not limited. Moreover, an example of a specific direction in which the protrusion protrudes is as follows. That is, the protrusion protrudes toward the side opposite to the opening and is made thinner than the thickness of the shaft.

[0014] In addition, another example of a specific direction in which the protruding piece protrudes is as follows: That is, the protruding piece protrudes toward the opening portion.

[0015] The shape of the protrusion is not limited. Moreover, when the pull tab is mounted on the slider body, in order to effectively play the function of the protrusion as a leaf spring, it is ideal to be as follows.

[0016] That is, the front portion of the protrusion faces one direction of the rotation direction centered on the shaft portion as it moves away from the shaft portion.

[0017] In addition, the zipper slider of the present invention includes the pull tab and a slider body, wherein the slider body is used to engage and disengage a pair of chain element rows extending in the front-to-back direction and facing left and right, and is equipped with the pull tab. The slider body includes: a main body for engaging and disengaging the pair of chain element rows; a mounting portion that passes through an opening above the main body to mount the pull tab and is fixed to the main body; and an axial hole formed between the upper surface of the main body and the mounting portion and through which the axial portion passes. At least a portion of the pull tab is made of synthetic resin, and a pair of connecting rods are arranged left and right with the mounting portion as the center. The pull tab can be shifted into: a lying position (a lying position) on the upper surface of the main body; and a standing position (a standing position) relative to the upper surface of the main body. The axial hole at least partially accommodates the axial portion and the protrusion. In the standing position, the protrusion is pressed against the inner surface of the axial hole in an elastically deformed state. The above are the characteristics of the zipper slider of the present invention.

[0018] The shaft hole can accommodate the shaft portion and the protruding piece together without a gap. However, in order to facilitate elastic deformation of the protruding piece, it is desirable to do as follows.

[0019] That is, the shaft hole accommodates the shaft portion and the protruding piece with a gap therebetween.

[0020] The size of the shaft hole is not limited, and a specific example is described below.

[0021] That is, the dimension of the shaft hole in the front-rear direction is made longer than the dimension in the up-down direction.

[0022] The dimensions of the protruding piece are not limited, but in order to facilitate elastic deformation of the protruding piece as a leaf spring, the following is preferable.

[0023] That is, when the handle is in the lying position, the dimension of the protruding piece in the front-back direction is longer than the dimension of the shaft portion in the front-back direction.

[0024] The relative rigidity between the shaft and the tab is not limited, but the following is desirable in order to allow the shaft to rotate with the rotation of the handle and to facilitate elastic deformation of the tab.

[0025] That is, the shaft portion has higher rigidity than the protruding piece and can rotate while being accommodated in the shaft hole.

[0026] Effects of the Invention

[0027] When the pull tab of the present invention is attached to the slider body, the shaft and tab are at least partially accommodated in the shaft hole of the slider body. This allows the pull tab to be rotated by the tab when an external force, such as vibration, is applied to the slider while the pull tab is in a collapsed position. This makes the pull tab less susceptible to rotational movement than, for example, a slider without a tab. Furthermore, because the tab is elastically deformable, the slider of the present invention can be operated from a collapsed position to an upright position. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] [ Figure 1 ] (A) to (E) are a perspective view, a plan view, a front view, and a right side view showing a slider for a slide fastener according to a first embodiment of the present invention. Figure 1 (B) EE line cross-section.

[0029] [ Figure 2 ] (A) to (D) are a perspective view, a plan view, a front view, and a right side view showing the slider for the slide fastener according to the first embodiment.

[0030] [ Figure 3 ] (A) shows the lying posture of the handle of the first embodiment. Figure 2(C) is a cross-sectional view taken along line III(A)-III(A), and (B) is a cross-sectional view showing the upright posture of the handle according to the first embodiment.

[0031] [ Figure 4 ] (A) to (E) are a perspective view, a plan view, a front view, and a right side view showing a slider for a slide fastener according to a second embodiment of the present invention. Figure 4 (B) EE line cross-section.

[0032] [ Figure 5 ] (A) to (D) are a perspective view, a plan view, a front view, and a right side view showing a slider for a slide fastener according to a second embodiment.

[0033] [ Figure 6 ] (A) shows the lying posture of the handle of the second embodiment Figure 5 (C) is a cross-sectional view taken along line VI(A)-VI(A), and (B) is a cross-sectional view showing the upright posture of the handle according to the second embodiment. DETAILED DESCRIPTION

[0034] Although not shown, the slide fastener includes a pair of tapes facing each other on a plane, element rows fixed along facing side edges of the pair of tapes, and a slider that engages and disengages the pair of element rows.

[0035] like Figure 2 As shown, the slider 1 includes a slider body 2 and a pull tab 3 mounted on the slider body 2. By operating the pull tab 3, the slider body 2 moves along a pair of chain element rows, and the zipper is opened or closed.

[0036] The so-called "front-back direction" is the direction in which the slider body 2 moves, and is the direction in which the pull tab 3 rotates when it is operated. In addition, the so-called "front-back direction" is also the direction in which the belt and the chain element row extend. The so-called "front direction" is the direction in which the slider body 2 moves when the zipper is closed. Figure 2 In (B), the "front direction" is the upward direction. The "rear direction" is the direction in which the slider body 2 moves when the zipper is opened. Figure 2 In (B), the so-called "rear direction" is the downward direction.

[0037] The so-called "left-right direction" is the direction in which a pair of fastener teeth are facing each other. In addition, the "left-right direction" is perpendicular to the front-back direction. Figure 2 The left and right directions in (B) are consistent.

[0038] The so-called "up and down direction" refers to the direction perpendicular to the front and back direction and the left and right direction, and is Figure 2 (B) The direction perpendicular to the paper surface. The so-called "upward direction" is the direction toward the front side in the direction perpendicular to the paper surface, and is perpendicular to the paper surface. Figure 2 (B) The direction toward the back in the direction perpendicular to the paper surface.

[0039] The slider body 2 includes a body portion 4 for engaging and disengaging a pair of element rows, and a mounting portion 5 fixed to the upper surface of the body portion 4 and for mounting the pull tab 3 .

[0040] The main body 4 includes: an upper plate 41 and a lower plate 42 that are spaced apart and facing each other, a column 43 that connects the upper plate 41 and the lower plate 42 in the middle part in the left and right directions on the front side of each other, and a flange 44 that protrudes from the left and right ends of the upper plate 41 and the lower plate 42 in a direction to reduce the facing distance between the upper plate 41 and the lower plate 42.

[0041] The main body 4 also includes a tooth path 45 through which a pair of tooth rows pass, and a pair of belt grooves 46, which communicate with the tooth path 45 and allow the belt to which the tooth rows are fixed, to pass as its internal space. The tooth path 45 is divided into upper and lower parts by the upper plate 41 and the lower plate 42, and is divided into left and right parts by the left and right flanges 44 of the upper plate 41 and the lower plate 42. The front side of the tooth path 45 is a pair of branch paths that branch left and right from the column 43. The rear side of the tooth path 45 is a confluence where the pair of branch paths merge and extend straight from the column 43 toward the rear.

[0042] When viewed from above, the mounting portion 5 is disposed in the middle portion of the upper plate 41 in the left-right direction. Figure 3 As shown, the mounting portion 5 protrudes from the upper surface of the upper plate 41 and extends rearward. The mounting portion 5 extends in a rod-like shape in the front-to-back direction. Both ends of the mounting portion 5 in the front-to-back direction are bent toward the upper surface of the upper plate 41. The mounting portion 5 includes a front end portion 51 extending upward from the front portion of the upper surface of the upper plate 41, a central portion 52 extending rearward from the upper end of the front end portion 51 and facing the upper surface of the upper plate 41, and a rear end portion 53 extending downward from the rear end of the central portion 52 and approaching the rear portion of the upper surface of the upper plate 41.

[0043] In addition to the main body 4 and the mounting portion 5, the slider body 2 also includes an axial hole 6 for passing the shaft portion 31 of the pull tab 3, which will be described later. The axial hole 6 is formed between the upper surface of the main body 4 and the mounting portion 5 and is a space portion that passes through in the left-right direction.

[0044] The inner surface of the shaft hole 6 limits the range of forward, backward, and vertical movement of the shaft portion 31. It is an annular surface formed by the upper surface of the upper plate 41 and three surfaces of the mounting portion 5: the rear surface of the front end portion 51, the lower surface of the central portion 52, and the front surface of the rear end portion 53. The inner surface of the shaft hole 6 does not include the gap formed between the lower surface of the rear end portion 53 and the upper surface of the upper plate 41. Furthermore, the shaft hole 6 has a longitudinal dimension 6L (maximum dimension) greater than the vertical dimension 6H (maximum dimension). 6L>6H.

[0045] like Figure 1 As shown, the pull tab 3 includes: a shaft portion 31 serving as the center of rotation, a pair of connecting rods 32 extending from the shaft portion 31 to the outside in a radial direction centered on the shaft portion 31, a button portion 33 connected to the pair of connecting rods 32 on the side opposite to the shaft portion 31, and a protrusion 34 protruding from the shaft portion 31.

[0046] The straight line representing the center of the shaft portion 31 is referred to as the axis 31L. The direction in which the axis 31L extends is referred to as the axial direction. When the pull tab 3 is mounted on the slider body 2, the axial direction coincides with the left-right direction. The radial direction centered on the shaft portion 31 is the direction when viewed from the axial direction. When viewed from the axial direction, a straight line is used to connect the center point of the shaft portion 31 and a point away from the center point. The direction in which this straight line extends is the radial direction centered on the shaft portion 31. When two different points on a straight line extending in the radial direction are selected, the two points are referred to as the first point and the second point. The first point is closer to the center point of the shaft portion 31 than the second point. The second point is further away from the center point of the shaft portion 31 than the first point. The so-called outer side in the radial direction centered on the shaft portion 31 is the second point side relative to the first point.

[0047] The pair of connecting rods 32 face each other in the axial direction of the shaft portion 31. The pair of connecting rods 32, the shaft portion 31, and the button portion 33 are joined in an annular shape. An opening 35 is formed inside the annular shape, into which the mounting portion 5 is inserted. The opening 35 extends through the handle 3 in a direction perpendicular to both the direction in which the connecting rods 32 extend from the shaft portion 31 and the axial direction. Regarding the portion of the handle 3 located in the axial direction, the portion within the opening 35, in other words, the portion facing the opening 35, constitutes the shaft portion 31, while the portion outside the opening 35 constitutes a portion of the connecting rod 32.

[0048] The tab 34 projects radially outward from the pair of connecting rods 32 and the shaft 31 toward the side opposite the opening 35. The tab 34 is formed within a range that coincides with the left and right ends of the pair of connecting rods 32 in the axial (left-right) direction. More specifically, the tab 34 is formed continuously within the range between the pair of connecting rods 32 and within each connecting rod 32 in the axial (left-right) direction. The tab 34 includes an end portion on the shaft 31 side, two axial ends, namely the left and right ends, and a distal end, which is radially outward (opposite to the shaft 31) from the shaft 31. The end portion on the shaft 31 side of the tab 34 is fixed to the shaft 31, while the distal end is displaceable.

[0049] like Figure 3As shown, when mounted on the slider body 2, the pull tab 3 can rotate within a predetermined angle range around the shaft 31 when viewed from the axial direction. Figure 3 As shown in (B), when the pair of element rows are opened and closed (the button portion 33 is operated), the pull tab 3 becomes an upright posture relative to the upper surface of the main body 4 (hereinafter referred to as "upright posture"). Figure 3 As shown in (A), when the pair of element rows are not opened or closed, the pull tab 3 is positioned with the button portion 33 positioned rearward relative to the shaft portion 31, in a position lying flat on the upper surface of the main body 4 (hereinafter referred to as the "lying position"). Furthermore, when the pull tab 3 is in the lying position, the pair of connecting rods 32 are placed on the upper surface of the upper plate 41, arranged left and right with the mounting portion 5 as the center. Furthermore, when the pull tab 3 is in the lying position, the button portion 33 extends further rearward than the upper plate 41. Furthermore, when the pull tab 3 is in the lying position, the tab 34 protrudes forward from the shaft portion 31.

[0050] The handle 3 is an integrally molded part. Furthermore, the handle 3 is made of a synthetic resin, such as thermoplastic polyurethane elastomer. Thermoplastic polyurethane elastomer combines the soft elasticity of rubber with the strength of hard plastic. The shaft 31, the pair of connecting rods 32, and the knob 33 are less elastically deformable than the tab 34.

[0051] The protrusion 34 is capable of elastically deforming in the direction of rotation centered on the shaft 31 and is a leaf spring. In other words, the protrusion 34 is plate-shaped and can be elastically deformed in the thickness direction of the plate. The so-called rotation direction centered on the shaft 31 is the direction in which the pull-tab 3 rotates around the shaft 31 when the pull-tab 3 is changed from the lying position to the standing position or when the pull-tab 3 is changed from the standing position to the lying position. The rotation direction of the pull-tab 3 when the pull-tab 3 is changed from the lying position to the standing position is Figure 3 (A) is indicated by arrows. The rotation direction of the handle 3 when the handle 3 is changed from the upright position to the inverted position is Figure 3 The thickness direction of the protrusion 34 is a direction perpendicular to both the protrusion direction from the shaft portion 31 and the axial direction. When the handle 3 is in the inverted position, the thickness direction of the protrusion 34 is the vertical direction.

[0052] The protruding piece 34 includes a plate portion 36 protruding from the shaft portion 31 toward the side opposite to the opening 35 , and a pair of side piece portions 37 extending from the plate portion 36 toward the side opposite to the shaft portion 31 .

[0053] The thickness of the plate portion 36 is the same as the thickness of the side sheet portion 37 .

[0054] The left and right interval 37W between the pair of side pieces 37 is slightly wider than the left and right width 51W of the front end 51 of the mounting portion 5. 37W>51W. When the handle 3 is in the lying position, the pair of side pieces 37 extend forward from the left and right sides of the front end of the plate portion 36.

[0055] The length of the protrusion 34 in the direction in which it protrudes from the shaft portion 31 is longer than the length of the shaft portion 31 in the same direction. Figure 1 As shown in (E), when the handle 3 is in the fallen position, the following relationship exists. The front-to-back dimension (maximum dimension) L1 of the tab 34 is longer than the front-to-back dimension (maximum dimension) L2 of the shaft portion 31, and the front-to-back dimension (maximum dimension) L3 of the plate portion 36 is also longer than the front-to-back dimension L2 of the shaft portion 31. L1>L2, L3>L2. The front-to-back dimension 6L of the shaft hole 6 is shorter than the dimension L1+L2 (the sum of the front-to-back dimension L1 of the tab 34 and the front-to-back dimension L2 of the shaft portion 31), and slightly longer than the dimension L2+L3 (the sum of the front-to-back dimension L2 of the shaft portion 31 and the front-to-back dimension L3 of the plate portion 36). L2+L3<6L<L1+L2.

[0056] When the handle 3 is in the inverted position, the following relationship also exists. The thickness T1 (maximum dimension in the vertical direction) of the tab 34 is thinner than the thickness T2 (maximum dimension in the vertical direction) of the shaft portion 31. T1 < T2. Moreover, as the thickness increases, the rigidity increases, so in terms of rigidity, the shaft portion 31 is higher than the tab 34. In addition, the thickness T2 of the shaft portion 31 is thinner than the thickness T3 (maximum dimension in the vertical direction) of the front end portion of the connecting rod 32 and is shorter than the dimension L3 of the plate portion 36 in the front-to-back direction. T2 < T3, T2 < L3. In addition, the lower end of the front end portion of the connecting rod 32 is located below the lower end of the shaft portion 31, and the upper end of the front end portion of the connecting rod 32 is located above the upper end of the shaft portion 31.

[0057] In the connecting rod 32, the thickness T3 of the front end is approximately the same as the maximum vertical dimension of the adjacent portions on both sides of the opening 35. The thickness T2 of the shaft portion 31 is shorter than the vertical dimension 6H of the shaft hole 6, shorter than the sum of the longitudinal dimension L2 of the shaft portion 31 and the longitudinal dimension L3 of the plate portion 36 (L2 + L3), and shorter than the longitudinal dimension L3 of the plate portion 36. T2 < 6H, T2 < L2 + L3, T2 < L3. The vertical dimension 6H of the shaft hole 6 is longer than the longitudinal dimension L2 of the shaft portion 31 and shorter than the sum of the longitudinal dimension L2 of the shaft portion 31 and the longitudinal dimension L3 of the plate portion 36 (L2 + L3). L2 < 6H < L2 + L3.

[0058] like Figure 2 、 Figure 3 As shown, the axial hole 6 accommodates the shaft portion 31 and a portion of the tab 34 directly below the mounting portion 5. As described above, when the handle 3 is in the inverted position, the axial hole 6's longitudinal dimension 6L is slightly longer than the sum of the longitudinal dimension L2 of the shaft portion 31 and the longitudinal dimension L3 of the plate portion 36 (L2 + L3). 6L > L2 + L3. Because the shape of the axial hole 6 is not a rectangle parallel to the longitudinal and vertical directions when viewed from the side, even if 6L > L2 + L3, in this embodiment, when the handle 3 is in the inverted position, the lateral center portion of the plate portion 36 of the tab 34 is accommodated within the axial hole 6, with little elastic deformation and unable to move in the longitudinal direction. Furthermore, when the handle 3 is in the inverted position, the axial hole 6 accommodates the shaft portion 31 and the tab 34 with a gap 7 in the vertical direction. When the pull tab 3 is changed from the lying position to the standing position, the protrusion 34 is pressed against the inner surface of the shaft hole 6 in an elastically deformed state, and the shaft portion 31 rotates inside the shaft hole 6 against the restoring force generated by the elastic deformation of the protrusion 34. That is, the shaft portion 31 can rotate while being accommodated in the shaft hole 6.

[0059] The slider 1 and tab 3 of the first embodiment have the following effects. When an external force, such as vibration, is applied to the slider 1 of the first embodiment, which places the tab 3 in a lying position, the tab 34 hinders the displacement of the tab 3 in the rotational and front-to-back directions. Compared to a slider without the tab 34, for example, the tab 3 is less likely to shake in the rotational and front-to-back directions, thereby suppressing the generation of sound. In addition, because the tab 34 is elastically deformable, the slider 1 can operate the tab 3 from a lying position to an upright position. More specifically, when the tab 3 is moved from a lying position to an upright position, the shaft portion 31 rotates a predetermined angle from the lying position within the shaft hole 6, and the plate portion 36 presses against the inner surface of the shaft hole 6 in an elastically deformed state. This elastic deformation generates a restoring force in the tab 3 that returns it from the upright position to the lying position.

[0060] In addition, since the shaft portion 31 and the plate portion 36 are housed together in the shaft hole 6 with a gap 7 in the up and down directions, compared with a slider in which the shaft portion 31 and the protrusion 34 are housed together in the shaft hole 6 without a gap 7, the protrusion 34 can be easily elastically deformed using the gap 7, and the user can operate the pull tab 3 from a lying position to an upright position with a light force.

[0061] In addition, when the pull tab 3 is in the lying position, the dimension L1 of the protrusion 34 in the front-to-back direction or the dimension L3 of the plate portion 36 in the front-to-back direction is longer than the dimension L2 of the shaft portion 31 in the front-to-back direction (L1>L2, L3>L2). Therefore, compared with a slider in which, for example, the dimension L1 of the protrusion 34 in the front-to-back direction or the dimension L3 of the plate portion 36 in the front-to-back direction is the same as the dimension L2 of the shaft portion 31 in the front-to-back direction (L1=L2, L3=L2), the protrusion 34 is easily elastically deformed, and the user can operate the pull tab 3 from the lying position to the upright position with a light force.

[0062] Furthermore, because the shaft portion 31 is more rigid than the tab 34 and can rotate while housed in the shaft hole 6, the shaft portion 31 of the slider 1 of the first embodiment is less likely to twist with the rotation of the pull tab 3, making it less susceptible to damage, compared to sliders having similar rigidity, for example. Furthermore, since the shaft portion 31 is less likely to twist, the user can easily rotate the pull tab 3. Furthermore, because the left-right spacing 37W between the pair of side pieces 37 is slightly wider than the left-right width 51W of the front end 51 of the mounting portion 5 (37W>51W), the pull tab 3 is substantially less likely to shift left-right relative to the mounting portion 5.

[0063] like Figures 4 to 6 As shown, the slider 1A of the second embodiment of the present invention has a slider body 2 identical to the slider body 2 of the first embodiment, but a pull tab 3A different from the pull tab 3 of the first embodiment. The pull tab 3A includes a shaft 31, a pair of connecting rods 32, a button 33, a tab 34A, and an opening 35. The structures of the shaft 31, the pair of connecting rods 32, the button 33, and the opening 35 are identical to those of the shaft 31 of the first embodiment. The structure of the tab 34A differs from that of the tab 34 of the first embodiment.

[0064] The tab 34A protrudes outward in the radial direction centered on the shaft 31 from one side of the shaft 31 toward the opening 35. In addition, in the state before the pull tab 3A is installed on the slider body 2, that is, when it is alone, the front portion 39 of the tab 34A faces one direction of the rotation direction centered on the shaft 31 as it moves away from the shaft 31. In more detail, the tab 34A includes: a base 38 extending in a straight line from the shaft 31 toward the button portion 33 inside the opening 35, and a front portion 39 extending in a straight line from the base 38 toward the button portion 33 inside the opening 35 and inclined relative to the base 38. In further detail, as Figure 4As shown in (E), when the handle 3A is in the presumably inverted position, the base 38 of the tab 34A extends rearward from the shaft 31. Furthermore, the front portion 39 of the tab 34A extends upward as it moves rearward from the rear end of the base 38. In other words, the front portion 39 of the tab 34A is inclined with respect to the front-to-back direction. The width of the front portion 39 of the tab 34A in the left-right direction tapers as it moves away from the base 38 (as it moves rearward).

[0065] The thickness T1 of the tab 34A is the same as the thickness T2 of the shaft 31. T1 = T2. Despite the same thickness, the tab 34A has greater rigidity than the tab 34A because the axial ends of the shaft 31 are bridged by the pair of connecting rods 32. Furthermore, because the tab 34A is positioned within the opening 35, it is positioned between the pair of connecting rods 32 in terms of the axial direction, and is separated from the pair of connecting rods 32 to the left and right.

[0066] Furthermore, when the handle 3A is in the inverted position, the following relationship holds. The front-to-back dimension L1 of the tab 34A is longer than the front-to-back dimension L2 of the shaft portion 31. L1 > L2. The sum of the front-to-back dimension L1 of the tab 34A and the front-to-back dimension L2 of the shaft portion 31 (L1 + L2) is slightly longer than the front-to-back dimension 6L of the shaft hole 6. L1 + L2 > 6L. Furthermore, in this embodiment, the front-to-back dimension 6L of the shaft hole 6 is also longer than the vertical dimension 6H of the shaft hole 6. 6L > 6H. The thickness T2 of the shaft portion 31 is shorter than the vertical dimension 6H of the shaft hole 6. T2 < 6H. At a position directly to the side with respect to the rear end portion 53 of the mounting portion 5, the left-to-right spacing 32W (minimum dimension) of the pair of connecting rods 32 is slightly wider than the left-to-right width 53W (maximum dimension) of the rear end portion 53. 32W > 53W.

[0067] In addition, if Figure 4 、 Figure 5 As shown, when the handle 3A is in the inverted position, the top ends of the pair of connecting rods 32 (where the shaft 31 is mounted) each include an upwardly projecting protrusion 321. When the handle 3 is rotated forward, the protrusions 321 collide with the top surface of the upper plate 41. This collision defines the forward limit position of the handle 3's rotational range.

[0068] When convex portion 321 is present, thickness T3 of the distal end portion of connecting rod 32 is equal to the thickness (maximum vertical dimension) of the portion of connecting rod 32 located near opening 35. Furthermore, thickness T3 of the distal end portion of connecting rod 32 is greater than thickness T2 of shaft portion 31. T3 > T2.

[0069] like Figure 6As shown in (A), the slider 1A of the second embodiment, when the pull tab 3A is in the inverted position, the front portion 39 of the tab 34A is elastically deformed by being pressed downward by the inner surface of the shaft hole 6. Furthermore, due to the restoring force of the elastic deformation, the pull tab 3A is pressed against the upper surface of the main body 4, preventing it from swinging in the direction of rotation centered on the shaft 31. Furthermore, when the pull tab 3A is in the inverted position, the shaft 31 and the tab 34A are housed within the shaft hole 6, virtually unable to move in the front-to-back direction. Furthermore, the shaft hole 6 accommodates the entire shaft 31 and the tab 34A, with a gap 7 in the vertical direction. In addition, when the pull tab 3A is in a lying position, since the left and right intervals 32W of the pair of connecting rods 32 are slightly wider than the left and right widths 53W of the rear end portion 53 at the side position relative to the rear end portion 53 of the mounting portion 5 (32W>53W), the pair of connecting rods 32 almost clamp the rear end portion 53 from the left and right, and therefore the pull tab 3 can hardly be displaced left and right relative to the mounting portion 5.

[0070] In addition, if Figure 6 As shown in (B), when the handle 3A is in the upright position, the front portion 39 of the protrusion 34A is elastically deformed compared to the case of the lying position. And, the handle 3A tends to return to the lying position due to the restoring force of the elastically deformed protrusion 34A.

[0071] The present invention is not limited to the above-described embodiments, and can be appropriately modified within the scope of the present invention.

[0072] For example, in the embodiment described above, the slider body 2 is formed by integrally molding the main body 4 and the mounting portion 5. However, the present invention is not limited to this. The main body 4 and the mounting portion 5 may also be formed separately and then fixed together to form an integral whole. The so-called separate molding of the main body 4 and the mounting portion 5 refers to, for example, a case where the mounting portion 5 is a cover, and the main body 4 has protrusions on the front and rear surfaces of the upper surface of the upper plate 41. The cover is then fixed to the front and rear protrusions, thereby forming the slider. In this slider, an axial hole 6 is formed between the lower surface of the cover and the upper surface of the main body 4.

[0073] In addition, the handle 3 is made of synthetic resin in the above embodiment, but the present invention is not limited thereto. The tab may be made of synthetic resin, and the tab may be made of a material different from the tab, such as metal.

[0074] Explanation of Figure Numbers

[0075] 1.1A: Slider

[0076] 2: Slider body

[0077] 3.3A: pull tab

[0078] 4: Main body

[0079] 5: Installation

[0080] 6: Shaft hole

[0081] 6L: Dimensions in the front-to-back direction

[0082] 6H: Dimensions in the vertical direction

[0083] 7: Gap

[0084] 31: Shaft

[0085] T2: thickness of the shaft

[0086] 31L: Axis

[0087] 32: Connecting rod

[0088] T3: Thickness of the front end of the connecting rod

[0089] 32W: The distance between the left and right of a pair of connecting rods

[0090] 321: convex part

[0091] 33: Button

[0092] 34, 34A: tabs

[0093] L1: The dimension of the tab in the front-to-back direction

[0094] L2: The dimension of the shaft in the front-to-back direction

[0095] L3: The dimension of the plate in the front-to-back direction

[0096] T1: Thickness of the tab

[0097] 35: Opening

[0098] 36: Board

[0099] 37: Side panel

[0100] 37W: The left and right intervals of a pair of side panels

[0101] 38: Base

[0102] 39: Front

[0103] 41: On the board

[0104] 42: Lower board

[0105] 43: column

[0106] 44: flange

[0107] 45: Chain Tooth Road

[0108] 46: with slot

[0109] 51: Front end

[0110] 51W: Width of the left and right sides of the front end

[0111] 52: Central Department

[0112] 53: rear end

[0113] 53W: Width of the left and right sides of the rear end

Claims

1. A zipper pull tab (3, 3A), mounted on a slider body (2) in a manner capable of rotating within a predetermined angle range, the zipper pull tab (3, 3A) comprising: a shaft portion (31) serving as a rotation center; a pair of connecting rods (32) extending from the shaft portion (31) toward the outside in a radial direction centered on the shaft portion (31) and facing each other in an axial direction of the shaft portion (31); a button portion (33) connected to the pair of connecting rods (32) on a side opposite to the shaft portion (31); an opening portion (35) formed inside a portion where the shaft portion (31), the pair of connecting rods (32), and the button portion (33) are annularly joined; and protrusions (34, 34A) protruding from the shaft portion (31) toward the outside in a radial direction centered on the shaft portion (31) between the pair of connecting rods (32) in terms of the range in the axial direction. The protrusion (34) is a leaf spring made of synthetic resin that can be elastically deformed in the rotation direction centered on the shaft (31).

2. The pull tab (3) for a zipper according to claim 1, characterized in that: The protrusion (34) protrudes toward the side opposite to the opening (35), and its thickness (T1) is thinner than the thickness (T2) of the shaft (31).

3. The slide fastener puller (3A) according to claim 1, characterized in that: The protrusion (34A) protrudes toward the opening (35).

4. The slide fastener puller (3A) according to claim 3, characterized in that: The front portion (39) of the protrusion (34A) faces one direction of the rotation direction centered on the shaft portion (31) as it moves away from the shaft portion (31).

5. A slider (1, 1A) for a zipper, characterized in that: The invention comprises a pull tab (3, 3A) for a zipper according to any one of claims 1 to 4 and a slider body (2), wherein the slider body (2) is used for engaging and disengaging a pair of chain element rows extending in the front-back direction and facing left and right and is provided with the pull tab (3, 3A). The slider body (2) comprises: a main body (4) for engaging and disengaging a pair of chain teeth; a mounting portion (5) above the main body (4) through the opening (35) to mount the pull tab (3, 3A) and fix it to the main body (4); and an axial hole (6) formed between the upper surface of the main body (4) and the mounting portion (5) and for the axial portion (31) to pass through. At least a portion of the pull tab (3, 3A) is made of synthetic resin, and a pair of connecting rods (32) are arranged left and right with the mounting portion (5) as the center. The pull tab (3, 3A) can be shifted into: a posture lying on the upper surface of the main body (4), that is, a lying posture; and a posture standing relative to the upper surface of the main body (4), that is, a standing posture. The shaft hole (6) at least partially accommodates the shaft portion (31) and the protrusion (34, 34A). The protrusion (34, 34A) is pressed against the inner surface of the shaft hole (6) in an elastically deformed state when in an upright position.

6. The slider (1, 1A) for a zipper according to claim 5, characterized in that: The shaft hole (6) accommodates the shaft portion (31) and the protrusion (34, 34A) together with a gap (7).

7. The slider (1, 1A) for a zipper according to claim 6, characterized in that: In the shaft hole (6), the dimension (6L) in the front-back direction is longer than the dimension (6H) in the up-down direction.

8. The slider (1, 1A) for a zipper according to claim 7, characterized in that: When the pull tab (3) is in a lying position, a dimension (L1) of the protrusion (34, 34A) in the front-to-back direction is longer than a dimension (L2) of the shaft portion (31) in the front-to-back direction.

9. The slider (1, 1A) for a zipper according to claim 8, characterized in that: The shaft portion (31) has higher rigidity than the protruding piece (34) and is rotatable while being accommodated in the shaft hole (6).

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