puller

Abstract

The puller (1) has a puller main body (10) and a pull tab (40), a pull tab mounting portion (22) and two claw holes (23) are arranged on the upper wing plate (20) of the puller main body (10), the pull tab (40) has a mounting shaft portion (43) and a pair of claw portions (44), in the side view of the puller main body (10), when the size of the puller length direction from the front end position of the connecting column (11) to the rear end position is defined as the column length size (Lc), the first puller length size (L1) from the rear end position of the connecting column (11) to the rear end position of the upper wing plate (20) is less than 200% of the column length size (Lc), and the second puller length size (L2) from the rear end position of the connecting column (11) to the center position of the holding space of the pull tab mounting portion (22) is less than 50% of the column length size (Lc).

Description

Technical Field

[0001] This utility model relates to a zipper pull for zippers. Background Technology

[0002] Japanese Patent Application Publication No. 9-37818 (Patent Document 1) describes a zipper head having two parts: a zipper head body and a zipper pull. The zipper head body of Patent Document 1 has an upper wing plate and a lower wing plate arranged parallel to each other, and a connecting post connecting the front end of the upper wing plate and the front end of the lower wing plate.

[0003] A roughly Y-shaped guide path for the chain teeth is formed between the upper and lower wing plates of the slider body. The upper wing plate has left and right sidewalls that protrude upwards from the left and right edges of the upper wing plate, two claw holes that pass through the upper wing plate in the vertical direction, and shaft holes formed in each sidewall along the width direction of the slider.

[0004] Patent Document 1 describes a pull tab comprising: an elongated, thin plate-shaped pull tab body; two claws protruding from the pull tab body in the thickness direction of the pull tab; and a pair of left and right mounting shafts protruding from the pull tab body outward in the width direction of the pull tab. The pull tab body is formed as a part of the pull tab body and can be inserted into recesses provided between the left and right sidewalls of the pull head body for reception. The two claws of the pull tab are configured to be inserted and removed respectively relative to claw holes provided in the upper wing plate of the pull head body.

[0005] In the zipper pull of Patent Document 1, for example, when the zipper pull is stopped relative to the zipper chain teeth, the pull tab is tilted so that the two claws are at the bottom, causing each claw to protrude through the claw hole of the upper wing plate into the zipper pull body's chain tooth guide path.

[0006] Therefore, the claw of the zipper pull can engage with the zipper teeth within the guide path of the zipper head body, thus keeping the zipper head from moving from the stop position relative to the zipper teeth. This mechanism (function) that keeps the zipper head from moving from the stop position via the claw of the zipper pull is called a stop mechanism (stop function).

[0007] Existing technical documents

[0008] Patent documents

[0009] Patent Document 1: Japanese Patent Application Publication No. 9-37818

[0010] As described in Patent Document 1, in a slider body with two claw holes formed in the upper wing plate, the strength of the upper wing plate is easily reduced due to the formation of the claw holes. Therefore, in a slider body with two claw holes in the upper wing plate, by forming the upper wing plate longer in the front-rear direction to appropriately ensure the area of ​​the portion of the upper wing plate other than the claw holes, the strength of the slider body is improved, so that even if an external force is applied to the slider body (especially the upper wing plate), the upper wing plate will not deform or is difficult to deform.

[0011] On the other hand, for the zipper pulls used in zippers, in order to improve the operability of the zipper pulls and reduce the manufacturing cost of the zipper pulls, it is desirable to achieve a lightweight zipper pull body and a reduction in unit consumption (especially the material cost of the zipper pull body). Utility Model Content

[0012] This invention was made in view of the above-mentioned problems, and its purpose is to provide a zipper head that makes it difficult for the upper wing plate to deform even when an external force is applied to the zipper head body, and that makes the zipper head body lighter than the conventional one.

[0013] Methods for solving problems

[0014] To achieve the above objectives, the zipper pull of this utility model is a zipper pull, which has a zipper pull body and a pull tab mounted on the zipper pull body. The zipper pull body has an upper wing plate, a lower wing plate separately disposed from the upper wing plate, and a connecting post connecting the front end of the upper wing plate and the front end of the lower wing plate. The upper wing plate has a pull tab mounting part for mounting the pull tab and two claw holes penetrating the upper wing plate. The pull tab has a mounting shaft part held in the pull tab mounting part and a pair of claw parts that are pluggably disposed relative to the pair of claw holes. In a side view of the zipper pull body, when... The length of the pull head from the front end to the rear end of the connecting post is defined as the post length dimension. The length of the pull head from the rear end of the connecting post to the rear end of the upper wing plate is defined as the first pull head length dimension. The length of the pull head from the rear end of the connecting post to the center of the holding space of the mounting shaft of the pull tab mounting part is defined as the second pull head length dimension. In this case, the first pull head length dimension is less than 200% of the post length dimension, and the second pull head length dimension is less than 50% of the post length dimension.

[0015] In this utility model, preferably, the zipper head body has a pair of shoulders provided on both sides of the connecting post between the upper wing plate and the lower wing plate. In a downward view of the zipper head body, a retractable portion is provided at the end edge of the shoulder side in the lower wing plate, and the retractable portion is formed to be recessed towards the inner side of the lower wing plate.

[0016] Preferably, the lower wing plate has: a plate-shaped lower wing plate body portion, an outer peripheral rib disposed along the outer periphery of the lower wing plate body portion and protruding downward from the lower wing plate body portion, and a lower reinforcing portion protruding downward from the lower wing plate body portion. The dimension of the lower reinforcing portion relative to the pull head height direction of the lower wing plate body portion is set to be smaller than the dimension of the outer peripheral rib relative to the pull head height direction of the lower wing plate body portion. The lower reinforcing portion is configured to include a region on the lower surface of the lower wing plate body portion corresponding to the connection portion between the lower wing plate and the connecting post.

[0017] Preferably, the pull tab mounting portion has a pair of front and rear mounting posts disposed between the two claw holes in the width direction of the pull head and forming the retaining space. The pull tab has: a pull tab body portion, a pair of arm portions extending from the pull tab body portion and connecting the two ends of the mounting shaft portion, and an opening portion surrounded by the pull tab body portion, the pair of arm portions and the mounting shaft portion. In the length direction of the pull tab, when the end edge of the pull tab on the mounting shaft portion side is defined as the first end edge and the end edge of the pull tab on the side opposite to the first end edge is defined as the second end edge, one end of each claw portion is disposed between the first end edge of the pull tab and the center position of the mounting shaft portion, and the other end of each claw portion is disposed on the pull tab at a position closer to the second end edge than the opening portion.

[0018] Effects of the utility model

[0019] According to this invention, even when external force is applied to the zipper head body, the upper wing plate is unlikely to deform. Furthermore, compared to previous designs, the zipper head body is made lighter. Attached Figure Description

[0020] Figure 1 This is a perspective view schematically illustrating an embodiment of the present invention.

[0021] Figure 2 yes Figure 1 The side view of the pull head shown.

[0022] Figure 3 It is shown schematically. Figure 1 The top view of the zipper pull body shown.

[0023] Figure 4 Viewed from the oblique rear side Figure 3 The image shown is a 3D view of the zipper pull body.

[0024] Figure 5 This schematically shows a cut at the center in the height direction of the pull head. Figure 3 The diagram shows a cross-sectional view of the upper half of the slider body.

[0025] Figure 6 It is shown schematically. Figure 1 A three-dimensional view of the pull tab of the zipper puller shown.

[0026] Figure 7 yes Figure 6 The image shown is a bottom view of the pull tab.

[0027] Figure 8 yes Figure 6 The side view of the pull tab shown.

[0028] Explanation of reference numerals in the attached figures

[0029] 1. Pull head

[0030] 10. Pull-out body

[0031] 11 Connecting Posts

[0032] 12 Upper flange portion

[0033] 13 Lower flange portion

[0034] 14 Column Reinforcement Section

[0035] 15 Chain guide

[0036] 20 Upper Wing

[0037] 21 Lateral protrusions

[0038] 22. Tape Mounting Section

[0039] 22a Mounting Column

[0040] 23 Claw Holes

[0041] 24. Protrusions

[0042] 25 Upper Segment

[0043] 26 Containment recess

[0044] 30 Lower wingplate

[0045] 31 Lower wingplate body section

[0046] 32 Lower Segment

[0047] 33 Peripheral ribs

[0048] 34 Lower side reinforcement

[0049] 35 Retraction section

[0050] 40 Film Pull

[0051] 40a First edge

[0052] 40b Second edge

[0053] 41 Pull tab body part

[0054] 41a pull tab recess

[0055] 41b Pull-up protrusion

[0056] 42 Arm

[0057] 43 Mounting Shaft

[0058] 44 claws

[0059] 44a Front end (top part)

[0060] 46 First opening

[0061] 47 Second opening

[0062] Lc column length dimension

[0063] L1 First slider length dimension

[0064] L2 Second slider length dimension Detailed Implementation

[0065] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0066] Figure 1 This is a perspective view schematically showing the pull head of this embodiment. Figure 2 This is a side view of the pull head in this embodiment. Figure 3 , Figure 4 , Figure 5 These are, respectively, a top view, a perspective view, and a cross-sectional view of the pull head body of this embodiment. Figure 6 , Figure 7 , Figure 8 These are, respectively, a perspective view, a bottom view, and a side view of the pull tab in this embodiment.

[0067] In the following description related to the zipper pull 1, the front-back direction is the length direction of the zipper pull and the direction along which the zipper pull 1 slides in the zipper. In particular, the direction in which the zipper pull 1 moves to engage the left and right rows of zipper teeth is defined as the front (shoulder side direction), and the direction in which the zipper pull 1 moves to disengage the rows of zipper teeth is defined as the rear (rear opening side direction).

[0068] The vertical direction refers to the height direction of the slider, which can be described as the direction orthogonal to the upper wing plate 20 and lower wing plate 30 of the slider body 10. In this case, the orientation of the slider body 10 on which the slider 40 is installed is set to upward, and the orientation of its opposite side is set to downward.

[0069] The left and right directions are the width direction of the slider, which is orthogonal to the length and height directions of the slider.

[0070] The zipper pull 1 of this embodiment is used for zippers having a pair of left and right zipper straps, each pair of zipper straps having multiple zipper teeth mounted on the zipper tape. In this case, the zipper tape is formed from a long, thin, woven strip-shaped component.

[0071] Multiple zipper teeth are formed by winding synthetic resin monofilaments into coils or bending them into serrations. Furthermore, these coil-shaped or serrated zipper teeth are sewn to the side edge of the zipper tape using a sewing machine. Thus, a row of teeth is formed along the length of the zipper tape.

[0072] The zipper pull 1 of this embodiment can be slidably mounted on the teeth rows of the left and right zipper belts. The zipper pull 1 is formed by two parts: a zipper pull body 10 and a pull tab 40. The zipper pull body 10 and the pull tab 40 are formed by die casting of metals such as zinc alloy. It should be noted that the materials of the zipper pull body 10 and the pull tab 40 are not particularly limited in this invention.

[0073] The zipper pull 1 is equipped with a stopping mechanism that tilts the pull tab 40 relative to the zipper pull body 10, thereby enabling the two claws 44 (described later) of the pull tab 40 to stop. Using this stopping mechanism, by tilting the pull tab 40 backward while the zipper pull 1 is stopped relative to the zipper teeth, the two claws 44 of the pull tab 40 can protrude into the zipper tooth guide 15 within the zipper pull body 10 and engage with the zipper teeth. This allows the zipper pull 1 to remain in the stopped position relative to the zipper teeth.

[0074] like Figures 1-5 As shown, the zipper head body 10 has: a plate-shaped upper wing plate 20, a lower wing plate 30 separately disposed from the upper wing plate 20, a connecting post 11 connecting the front end (shoulder side end) of the upper wing plate 20 and the front end (shoulder side end) of the lower wing plate 30, left and right upper flange portions 12 provided on the left and right side edges of the upper wing plate 20, and left and right lower flange portions 13 provided on the left and right side edges of the lower wing plate 30.

[0075] like Figures 6-8 As shown, the pull tab 40 has: a pull tab body 41 that can be pinched by a user with their fingers, a pair of left and right arms 42 extending from the pull tab body 41, a mounting shaft 43 connected to the front ends of the left and right arms 42, and two claws 44 protruding from the pull tab body 41 and the arms 42 along the thickness direction of the pull tab. A first opening 46 is formed at one end of the pull tab 40 in the pull tab length direction, and the first opening 46 is formed by the pull tab body 41, the left and right arms 42, and the mounting shaft 43.

[0076] At the front end of the zipper pull body 10, a connecting post 11 is sandwiched in the middle to form left and right shoulders. A rear opening is formed at the rear end of the zipper pull body 10. A roughly Y-shaped tooth guide 15 is formed between the upper wing plate 20 and the lower wing plate 30 of the zipper pull body 10, connecting the left and right shoulders and the rear opening. The teeth of the left and right zipper straps are inserted into the tooth guide 15.

[0077] The left and right side edges of the zipper head body 10 are provided with zipper tape insertion gaps for inserting the zipper tape. Each zipper tape insertion gap is formed between the upper flange 12 and the lower flange 13 of the zipper head body 10 and communicates with the zipper tooth guide 15.

[0078] The upper wing plate 20 of the zipper pull body 10 is arranged in a direction orthogonal to the vertical direction. The upper wing plate 20 includes: a pair of left and right side protrusions 21 protruding upwards from the left and right side edges of the upper wing plate 20; a pull tab mounting portion 22 located in the center of the upper wing plate 20 in the left-right direction; two claw holes 23 penetrating the upper wing plate 20 in the vertical direction; a small protrusion 24 located at the front end of the upper wing plate 20; and an upper dividing portion 25 protruding downwards from the lower surface (chain tooth guide surface) of the upper wing plate 20. The left and right side protrusions 21, the pull tab mounting portion 22, the protrusion 24, and the upper dividing portion 25 are integrally formed with the upper wing plate 20.

[0079] The left and right side protrusions 21 are arranged separately from each other in the left-right direction and have a shape that is symmetrical to each other in the left-right direction. Between the left and right side protrusions 21, a receiving recess 26 is formed straight in the front-back direction to receive a portion of the pull tab 40. Each side protrusion 21 has: an outer surface disposed on the outer side of the side protrusion 21 in the left-right direction, an inner surface disposed on the inner side of the side protrusion 21 in the left-right direction, and an upper surface facing upward.

[0080] The outer surface of the side protrusion 21 is smoothly and continuously formed with the side surface of the upper flange 20. The outer surface of the side protrusion 21, the side surface of the upper flange 20, and the outer surface of the upper flange 12 form a smooth surface without boundaries. The inner surfaces of the left and right side protrusions 21 are formed by a plane along the front-rear direction.

[0081] The ridge portion between the upper surface and the inner surface of the side protrusion 21 is formed as a curved surface that smoothly bends from the upper surface toward the inner surface, or as an inclined surface that slopes downward toward the inner surface in the left-right direction. By forming the ridge portion of the side protrusion 21 as a curved surface or an inclined surface, for example, when performing a coating process to form a film on the zipper head 1 of this embodiment, the paint can easily flow into the receiving recess 26 between the left and right side protrusions 21. Therefore, the receiving recess 26 of the zipper head body 10 can also be coated stably.

[0082] By providing the left and right side protrusions 21 as described above on the upper surface of the upper wing plate 20, when the pull tab 40 is tilted forward or backward relative to the pull head body 10, it is possible to prevent the pull tab 40 from moving loosely and freely in the left and right directions. It should be noted that, in this utility model, the pull head body 10 may also be formed without providing the left and right side protrusions 21.

[0083] The pull tab mounting section 22 has a pair of front and rear mounting posts 22a. Before the pull tab 40 is installed on the pull head body 10, the front and rear mounting posts 22a extend upwards from the upper surface of the upper wing plate 20 and are arranged separately from each other. The front and rear mounting posts 22a have a shape that is symmetrical to each other in the front-rear direction. A gap is formed between the front mounting post 22a and the rear mounting post 22a to allow the mounting shaft portion 43 of the pull tab 40 to be inserted.

[0084] When installing the mounting shaft 43 of the pull tab 40 into the pull tab mounting section 22, firstly, the mounting shaft 43 of the pull tab 40 is inserted and housed between the front and rear mounting posts 22a. Next, the upper ends of the front and rear mounting posts 22a are pressed towards the mounting post 22a on the opposite side to plastically deform them, so that the front ends of the front and rear mounting posts 22a are in contact with each other or are arranged close to each other with a small gap. Thus, the pull tab 40 is installed onto the pull head body 10. In addition, the mounting shaft 43 of the pull tab 40 is held in a rotatable position by the upper flange 20 and the front and rear mounting posts 22a.

[0085] A claw hole 23 is formed on each of the left and right sides of the pull tab mounting part 22. In other words, the pull tab mounting part 22 is arranged between the two claw holes 23 in the left-right direction.

[0086] Two claw holes 23 are formed on the upper wing plate 20, each positioned and sized to allow the corresponding claw portion 44 of the pull tab 40 to be inserted when the pull tab 40 is mounted on the pull head body 10. For example, in this embodiment, the two claw holes 23 are formed in a shape that is symmetrical to each other in the left-right direction. Each claw hole 23 is provided in the left-right direction between the pull tab mounting portion 22 and the side protrusion 21.

[0087] The claw hole 23 extends vertically through the upper wing plate 20 and connects with the chain tooth guide 15 of the slider body 10. (When viewed from above, the slider body 10...) Figure 3 Each claw hole 23 has a rectangular shape that is longer in the front-rear direction. In addition, each claw hole 23 is provided at a position that does not coincide with the connecting post 11, the post reinforcement 14 (described later), and the upper partition 25 in the upper wing plate 20, with a size that does not coincide with the connecting post 11, the post reinforcement 14 (described later), and the upper partition 25 in the upper wing plate 20.

[0088] The front edge of the rectangular claw hole 23 is positioned forward of the center of the two mounting posts 22a in the front-rear direction. The rear edge of the claw hole 23 is positioned in the front-rear direction within a range parallel to the left and right upper flange portions 12 (or the left and right side edges of the upper wing plate 20). The left-right dimension of the claw hole 23 is set to be more than 10% and less than 40% of the left-right dimension at the rear end of the upper wing plate 20. It should be noted that in this utility model, the shape and size of the claw hole 23 are not particularly limited as long as the claw portion 44 of the pull tab 40 mounted on the zipper head body 10 can be inserted and removed relative to the claw hole 23.

[0089] The protrusion 24 of the upper wing plate 20 protrudes slightly from the upper surface of the upper wing plate 20 and is disposed at the center of the front end of the upper wing plate 20 in the left-right direction. The outer peripheral surface of the protrusion 24 is formed into a spherical or substantially spherical shape. It should be noted that in this utility model, the shape and size of the protrusion 24 are not particularly limited.

[0090] By providing such a protrusion 24 on the upper surface of the upper wing plate 20, when the pull tab 40 is tilted relative to the pull head body 10 toward the shoulder side (front side), the pull tab 40 can be held by contacting the protrusion 24 and being supported by the protrusion 24, thus allowing the pull tab 40 to be held away from the upper surface of the upper wing plate 20.

[0091] Therefore, for example, after the zipper head 1 has been coated, it is possible to prevent the zipper tab 40 from being glued to the upper wing plate 20 by the paint. It should be noted that in the zipper head 1 of this embodiment, by providing the zipper tab recess 41a (described later) in the zipper tab body portion 41, even if the zipper tab 40 is tilted relative to the zipper head body 10 towards the rear opening side (rear side), the zipper tab 40 is difficult to glue to the upper wing plate 20. Therefore, the protrusion 24 is not provided at the rear end of the upper wing plate 20.

[0092] The upper segment 25 of the upper wing plate 20 is formed vertically along the front-rear direction on the lower surface of the upper wing plate 20. The front end of the upper segment 25 is connected to the connecting post 11 (see reference). Figure 5 The upper dividing part 25 is positioned between the left and right claw holes 23, at a position that moves inward from the left and right claw holes 23 in the left and right directions.

[0093] By providing the upper dividing portion 25 and the lower dividing portion 32 (described later), the upper dividing portion 25 and the lower dividing portion 32 contact the left and right zipper teeth within the zipper tooth guide 15 of the zipper head body 10, thus enabling the zipper teeth to be stably held in an appropriate posture. Consequently, within the zipper tooth guide 15, the engagement and disengagement of the left and right zipper teeth can proceed smoothly.

[0094] The lower wing plate 30 of the zipper pull body 10 is disposed away from the upper wing plate 20 and is disposed parallel or substantially parallel to the upper wing plate 20. The lower wing plate 30 has: a thin plate-shaped lower wing plate body portion 31 disposed in a direction orthogonal to the vertical direction; a lower dividing portion 32 protruding upward from the upper surface (chain tooth guide surface) of the lower wing plate body portion 31; an outer peripheral rib 33 provided along the outer peripheral edge of the lower wing plate body portion 31 on the lower surface of the lower wing plate body portion 31; and a lower reinforcing portion 34 protruding downward from the lower wing plate body portion 31.

[0095] The lower wing plate body 31 is formed with a smaller height dimension (vertical dimension) than the upper wing plate 20. This helps to reduce the weight of the slider body 10 and reduce material costs.

[0096] The lower segment 32 of the lower wing plate 30 is formed vertically along the front-rear direction on the upper surface of the lower wing plate 30. The front end of the lower segment 32 is connected to the connecting post 11.

[0097] The outer peripheral rib 33 of the lower wing plate 30 protrudes downward from the lower wing plate body portion 31. The outer peripheral rib 33 is provided around the entire circumference of the outer peripheral edge of the lower wing plate body portion 31, with the height of the outer peripheral rib 33 from the lower surface of the lower wing plate body portion 31 set to a fixed size. By providing this outer peripheral rib 33, the strength of the lower wing plate 30 can be improved. Furthermore, for example, after the slider body 10 has been painted, the lower wing plate 30 of the slider body 10 is less likely to suffer from problems such as adhesion to other components due to the paint.

[0098] The lower reinforcing portion 34 is formed to bulge downward from the lower surface of the lower wingplate body portion 31. The lower reinforcing portion 34 is formed in a generally triangular shape inside the outer peripheral rib 33. The front end of the lower reinforcing portion 34 is connected to the outer peripheral rib 33. In addition, the lower reinforcing portion 34 and the outer peripheral rib 33 are formed together to cover the corresponding area on the lower surface of the lower wingplate body portion 31 corresponding to the connecting portion that connects to the lower wingplate 30 and the connecting post 11, or to include the corresponding area inside.

[0099] The distance from the lower reinforcing portion 34 to the lower wingplate body portion 31 is smaller than the distance from the outer peripheral rib 33 to the lower wingplate body portion 31. In this case, the distance from the lower reinforcing portion 34 to the lower wingplate body portion 31 is the vertical dimension from the lower surface of the lower wingplate body portion 31 to the lower end of the lower reinforcing portion 34. The distance from the outer peripheral rib 33 to the lower wingplate body portion 31 is the vertical dimension from the lower surface of the lower wingplate body portion 31 to the lower end of the outer peripheral rib 33.

[0100] By providing the lower reinforcing part 34, the strength of the front portion of the lower flange 30 and the connection portion between the lower flange 30 and the connecting post 11 can be improved. Therefore, even if an external force is applied to the slider body 10, the connecting post 11 (especially the lower end of the connecting post 11) and the lower flange 30 are less likely to deform. It should be noted that text or numbers indicating the material and model of the slider 1, for example, can be marked in the circular recess provided in the lower reinforcing part 34. Alternatively, the lower reinforcing part 34 may be formed without the circular recess.

[0101] The lower wing plate 30 of this embodiment has left and right recessed portions 35 provided on the left and right shoulder-side end edges. In a bottom view (not shown) of the slider body 10 viewed from below, each of the left and right recessed portions 35 has a concave shape, for example, curved inwards towards the lower wing plate 30 compared to the shape of the upper wing plate 20. By providing such concave recessed portions 35 on the shoulder-side end edges of the lower wing plate 30, compared to the case where the upper wing plate 20 is formed in a convex shape, curved outwards from the left and right shoulder-side end edges, the slider body 10 can be made lighter. Furthermore, the unit consumption of the slider body 10 can be reduced.

[0102] It should be noted that in this invention, the left and right recessed portions provided on the lower wing plate may not be bent into a concave shape, but rather formed into a shape that is inclined relative to the front-back direction. For example, when viewed from below, the inclined recessed portions are formed inwardly recessed compared to the shape of the upper wing plate, and are formed straight along the direction of inclination from the front-back direction.

[0103] The connecting post 11 of the pull head body 10 is formed vertically in the vertical direction to connect the upper wing plate 20 and the lower wing plate 30. The connecting post 11 is formed in such a way that the cross section of the connecting post 11 orthogonal to the vertical direction has a fixed shape throughout the vertical direction of the connecting post 11.

[0104] Column reinforcement portions 14 are provided at the upper end (upper root portion) of the connecting column 11 that connects to the upper flange 20 and at the lower end (lower root portion) that connects to the lower flange 30. The upper and lower column reinforcement portions 14 have a shape that is symmetrical to each other in the vertical direction. For example, the upper and lower column reinforcement portions 14 are... Figure 5 As shown, within the forming range of the upper wing plate 20 or the lower wing plate 30, it is formed in such a way that it surrounds the outer periphery of the connecting post 11 and extends outward from the outer periphery of the connecting post 11.

[0105] Furthermore, in each column reinforcement 14, when observing the cross section of the column reinforcement 14 orthogonal to the vertical direction, the cross section of the column reinforcement 14 is formed in the following shape: the closer to the chain tooth guide surface of the upper wing plate 20 or the lower wing plate 30, the more it gradually expands from the outer peripheral surface of the connecting column 11 toward the outer side in the direction orthogonal to the vertical direction.

[0106] By providing such column reinforcement portions 14 at the upper and lower ends of the connecting column 11, the strength of the connection portion connecting the connecting column 11 to the upper flange 20 or the lower flange 30 can be improved. Furthermore, during the die-casting of the slider body 10, the molten metal material (molten metal liquid) can easily flow from the connecting column 11 toward the upper flange 20 and / or the lower flange 30, or from the upper flange 20 and / or the lower flange 30 toward the connecting column 11. Therefore, a slider body 10 with a predetermined shape can be stably formed.

[0107] The left and right upper flange portions 12 of the upper wing plate 20 are formed to extend from the left and right side edges of the upper wing plate 20 toward the lower wing plate 30 in the vertical direction. The left and right upper flange portions 12 have a shape that is symmetrical to each other in the left and right direction.

[0108] The left and right lower flange portions 13 are formed to extend from the left and right side edges of the lower wing plate 30 toward the upper wing plate 20 in the vertical direction. The left and right lower flange portions 13 have a shape that is symmetrical to each other in the left and right direction. In addition, in this embodiment, the upper flange portion 12 and the lower flange portion 13 have a shape that is symmetrical to each other in the vertical direction.

[0109] In this embodiment, the slider body 10 is formed to achieve weight reduction and a decrease in unit consumption (especially material cost). For example, compared to the conventional slider body with two claw holes described in Patent Document 1, the length dimension (dimension in the front-to-back direction) of the slider body 10 is minimized. In particular, the length dimension of the portion of the slider body 10 that is rearward from the connecting post 11 is reduced.

[0110] For example, in this embodiment, the zipper pull body 10 is formed to be smaller in the front-to-back direction, such that the maximum value of the length dimension of the zipper pull body 10 (i.e., the length dimension at the center of the zipper pull body 10 in the left-to-right direction) is less than 200% of the width dimension of the interval between the left and right upper flange portions 12. It should be noted that, in order to smoothly perform the engagement and disengagement of the left and right zipper teeth within the zipper tooth guide 15 of the zipper pull body 10, it is preferable to set the maximum value of the length dimension of the zipper pull body 10 to be larger than the maximum value of the width dimension of the zipper pull body 10. Specifically, in this embodiment, the maximum value of the length dimension of the zipper pull body 10 is less than 120% of the maximum value of the width dimension of the zipper pull body 10, preferably about 114%.

[0111] On the other hand, in the zipper pull body 10 of this embodiment, as described above, the upper wing plate 20 is provided with two claw holes 23 for inserting and removing the two claw portions 44 of the pull tab 40. In this case, for example, when compared with a conventional zipper pull body like the one described in Patent Document 1, the top view of the zipper pull body 10 ( Figure 3 In this embodiment, the area of ​​the upper wing plate 20 is reduced, therefore, the ratio of the total area of ​​the two claw holes 23 to the area of ​​the upper wing plate 20 becomes larger.

[0112] Thus, when the ratio of the total area of ​​the two claw holes 23 to the area of ​​the upper wing plate 20 increases, the strength of the upper wing plate 20 will decrease. As a result, the following problems may occur: for example, when an external force is applied to the zipper body 10 from the pull tab 40 or the zipper chain teeth, the upper wing plate 20 may deform, causing the rear end of the upper wing plate 20 to separate from the lower wing plate 30 (i.e., the opening problem).

[0113] Regarding the issue of such openings, the inventors of this invention discovered that by increasing the length of the connecting post 11, the aforementioned deformation of the upper wing plate 20 can be made less likely. Furthermore, through intensive research and repeated exploration into the relationship between the length of the upper wing plate 20 and the connecting post 11 and the strength of the upper wing plate 20, a zipper puller that simultaneously satisfies the requirements of lightweighting the zipper pull body 10, reducing unit consumption, and ensuring the strength of the upper wing plate 20 has been achieved.

[0114] Below, referring to the pull head 1 of this embodiment... Figure 2 The dimensional relationships of the slider body 10, which can simultaneously satisfy the requirements of lightweighting of the slider body 10 and ensuring the strength of the upper wing plate 20, will be explained.

[0115] Here, a side view of the slider body 10 in this embodiment ( Figure 2 In this designation, the length of the pull head from the front end to the rear end of the connecting post 11 is defined as "post length dimension Lc". The length of the pull head from the rear end of the connecting post 11 to the rear end of the upper wing plate 20 is defined as "first pull head length dimension L1". The length of the pull head from the rear end of the connecting post 11 to the center of the holding space of the holding mounting shaft portion 43 of the pull tab mounting portion 22 is defined as "second pull head length dimension L2".

[0116] In this case, the slider body 10 of this embodiment is formed such that the first slider length dimension L1 is less than 200% of the column length dimension Lc, and the second slider length dimension L2 is less than 50% of the column length dimension Lc. Furthermore, it is preferable that the ratio of the first slider length dimension L1 to the column length dimension Lc is 100% or more and 180% or less. It is also preferable that the ratio of the second slider length dimension L2 to the column length dimension Lc is 20% or more and 45% or less.

[0117] In this way, by increasing the column length dimension Lc of the connecting column 11 so that the size of "L1 / Lc" is less than 2.0 and the size of "L2 / Lc" is less than 0.5 (that is, by forming the connecting column 11 to be longer in the front-to-back direction), the strength of the upper flange 20 can be effectively improved.

[0118] Therefore, even when the upper wing plate 20 has two claw holes 23 and the length of the slider body 10 is smaller than that of the rear portion of the connecting post 11, the upper wing plate 20 is less prone to deformation when external force is applied to the slider body 10 from the pull tab 40 and the chain teeth. As a result, the aforementioned opening problem can be prevented or suppressed.

[0119] It should be noted that, in this embodiment, by forming the slider body 10 such that the ratio of the first slider length dimension L1 to the column length dimension Lc is 100% or more and the ratio of the second slider length dimension L2 to the column length dimension Lc is 20% or more, it is possible to prevent the connecting column 11 from being too long in the front-to-back direction and to prevent the portion of the slider body 10 that is rearward from the rear end position of the connecting column 11 from being too small.

[0120] like Figures 6-8 As shown, the pull tab body 41 of the pull tab 40 has a thin and elongated shape. The pull tab body 41 has an upper surface (first surface) and a lower surface (second surface). The upper surface (first surface) faces upward when the pull tab 40 is tilted rearward relative to the pull head body 10, and the lower surface (second surface) faces upward when the pull tab 40 is tilted forward relative to the pull head body 10.

[0121] The pull tab body 41 has: a second opening 47 extending from the upper surface of the pull tab to the lower surface of the pull tab; a pull tab recess 41a provided on the lower surface of the pull tab; and a pull tab protrusion 41b provided at one end of the pull tab body 41 on the side of the second opening 47. By providing the second opening 47 and the pull tab recess 41a in the pull tab body 41, the pull tab 40 can be made lighter. By providing the pull tab protrusion 41b in the pull tab body 41, the pull tab 40 can be easily pinched with fingers.

[0122] The left and right arms 42 of the pull tab 40 extend straight along the length of the pull tab, starting from the other end of the pull tab body 41. The left and right arms 42 are separated from each other and arranged parallel to each other.

[0123] The mounting shaft 43 of the pull tab 40 is arranged along the width direction (left-right direction) of the pull tab. Both ends of the mounting shaft 43 are connected to the front ends of the left and right arms 42, respectively. The mounting shaft 43 is formed such that the cross section of the mounting shaft 43 orthogonal to the width direction of the pull tab has a fixed shape throughout the width direction of the pull tab. The cross section of the mounting shaft 43 orthogonal to the width direction of the pull tab is formed into a circle or approximately a circle.

[0124] The two claws 44 of the pull tab 40 protrude from the lower surface of the pull tab body 41 and the arm 42 along the thickness direction of the pull tab, respectively. Each claw 44 is shown in a side view of the pull tab 40 (refer to...). Figure 8 It has a roughly triangular shape, with the front end (top part) 44a of the claw part 44 located at the position furthest from the arm part 42. The two claw parts 44 are staggered from each other in the length direction of the pull tab to form the position of the front end 44a of the claw part 44.

[0125] Here, in the length direction of the pull tab, the end edge on the mounting shaft portion 43 side of the pull tab 40 is defined as the first end edge 40a, and the end edge on the side opposite to the first end edge 40a of the pull tab 40 is defined as the second end edge 40b. In this case, when the pull tab 40 is viewed from the lower surface side of the pull tab (refer to...), Figure 7 One end of each claw portion 44, near the first end edge 40a, is positioned between the first end edge 40a of the pull tab 40 and the center position of the mounting shaft portion 43. The other end of each claw portion 44, away from the first end edge 40a, is positioned at a position further away from the first end edge 40a than the first opening 46 of the pull tab 40 (in other words, closer to the second end edge 40b).

[0126] By positioning one end of each claw 44 between the first end edge 40a of the pull tab 40 and the center position of the mounting shaft 43, during die casting of the pull tab 40, molten metal material (liquid metal) can easily flow from the arm 42 and claw 44 toward the mounting shaft 43, or from the mounting shaft 43 toward the arm 42 and claw 44. Therefore, a pull tab 40 with a predetermined shape can be stably formed.

[0127] By positioning the other end of each claw portion 44 at a position farther from the first end edge 40a than the first opening portion 46, the left and right claw portions 44 can be continuously arranged across the entirety of each arm portion 42 and a portion of the pull tab body portion 41. This increases the strength of the claw portions 44 and the arm portions 42. Therefore, when the pull tab 40 is subjected to a force, for example, in a direction of torsion relative to the pull head body 10, the claw portions 44 and arm portions 42 of the pull tab 40 are less likely to break.

[0128] In the swivel head 1 of this embodiment as described above, compared to the conventional swivel head body, the length of the swivel head body 10 is reduced, and in particular, the length of the portion of the swivel head body 10 that is further rearward than the connecting post 11 is reduced. Furthermore, in this embodiment, the swivel head body 10 is formed such that the first swivel head length L1 is less than 200% of the post length Lc, and the second swivel head length L2 is less than 50% of the post length Lc.

[0129] This allows for a lighter zipper pull body 10 and reduces the unit consumption of the zipper pull body 10. Furthermore, by increasing the strength of the zipper pull body 10, especially the upper wing plate 20, the upper wing plate 20 of the zipper pull body 10 is less prone to deformation even when external forces are applied to the zipper pull body 10 from the zipper chain teeth or pull tab 40. This prevents damage and malfunction of the zipper pull 1, ensuring its long-term stable use.

[0130] It should be noted that this utility model is not limited to the above-described embodiments. Any modifications can be made as long as the structure is substantially the same as that of this utility model and can perform the same function.

[0131] For example, the zipper head 1 of the above embodiment is formed by mounting a mounting shaft 43 provided between the arm portions 42 of the zipper 40 by a zipper mounting portion 22 provided in the center of the zipper head body 10.

[0132] However, the zipper pull of this invention is not limited to a structure in which the pull tab is mounted on the zipper pull body. In this invention, for example, the pull tab may have a pair of left and right mounting shaft portions protruding outward from the pull tab body portion in the width direction of the pull tab. In addition, the zipper pull body may not have the front and rear mounting posts 22a as described in the above embodiment, but instead has a holding space on the left and right side protrusions of the zipper pull body to hold the mounting shaft portions of the pull tab in a rotatable manner, thereby mounting the pull tab to the zipper pull body.

[0133] Furthermore, the zipper pull 1 of the above embodiment is used in zippers where the zipper teeth are formed by winding synthetic resin monofilaments into coils or bending them into serrations. However, this invention is not limited to this. The zipper pull of this invention can also be applied to, for example, zippers with metal zipper teeth installed on the zipper tape, and zippers where each zipper tooth is formed by injection molding of synthetic resin and has a shape independent of adjacent zipper teeth.

Claims

1. A zipper pull, comprising a zipper pull body (10) and a pull tab (40) mounted on the zipper pull body (10), the zipper pull body (10) having an upper wing plate (20), a lower wing plate (30) disposed separately from the upper wing plate (20), and a connecting post (11) connecting the front end of the upper wing plate (20) and the front end of the lower wing plate (30), characterized in that, The upper wing plate (20) is provided with a pull tab mounting part (22) for mounting the pull tab (40) and two claw holes (23) that penetrate the upper wing plate (20). The pull tab (40) has a mounting shaft portion (43) held in the pull tab mounting portion (22) and a pair of claw portions (44) respectively provided pluggably relative to a pair of claw holes (23). In a side view of the zipper head body (10), when the length of the zipper head from the front end to the rear end of the connecting post (11) is defined as the post length dimension (Lc), the length of the zipper head from the rear end of the connecting post (11) to the rear end of the upper wing plate (20) is defined as the first zipper head length dimension (L1), and the length of the zipper head from the rear end of the connecting post (11) to the center of the holding space of the mounting shaft portion (43) of the zipper tab mounting portion (22) is defined as the second zipper head length dimension (L2), the first zipper head length dimension (L1) is less than 200% of the post length dimension (Lc), and the second zipper head length dimension (L2) is less than 50% of the post length dimension (Lc).

2. The zipper pull as described in claim 1, characterized in that, The zipper head body (10) has a pair of shoulders disposed on both sides of the connecting post (11) between the upper wing plate (20) and the lower wing plate (30). In a downward view of the zipper head body (10), a retractable portion (35) is provided at the end edge of the shoulder side of the lower wing plate (30), and the retractable portion (35) is formed to be recessed towards the inner side of the lower wing plate (30).

3. The zipper pull as described in claim 1, characterized in that, The lower wing plate (30) has: a plate-shaped lower wing plate body portion (31), an outer peripheral rib (33) provided along the outer periphery of the lower wing plate body portion (31) and protruding downward from the lower wing plate body portion (31), and a lower reinforcing portion (34) protruding downward from the lower wing plate body portion (31). The dimension of the lower reinforcing part (34) relative to the lower wing plate body part (31) in the pull head height direction is set to be smaller than the dimension of the outer peripheral rib (33) relative to the lower wing plate body part (31) in the pull head height direction. The lower side reinforcement (34) is configured to include a region on the lower surface of the lower wing body part (31) corresponding to the connection portion of the lower wing plate (30) and the connecting post (11).

4. The zipper pull as described in claim 1, characterized in that, The pull tab mounting part (22) has a pair of front and rear mounting posts (22a) arranged between the two claw holes (23) in the width direction of the pull head and forming the holding space. The pull tab (40) has: a pull tab body portion (41), a pair of arms (42) extending from the pull tab body portion (41) and connecting the two ends of the mounting shaft portion (43), and an opening portion (46) surrounded by the pull tab body portion (41), the pair of arms (42) and the mounting shaft portion (43). In the length direction of the pull tab (40), when the end edge of the pull tab (40) on the side of the mounting shaft portion (43) is defined as the first end edge (40a) and the end edge of the pull tab (40) on the side opposite to the first end edge (40a) is defined as the second end edge (40b), one end of each claw portion (44) is disposed between the first end edge (40a) of the pull tab (40) and the center position of the mounting shaft portion (43), and the other end of each claw portion (44) is disposed on the pull tab (40) at a position closer to the second end edge (40b) than the opening portion (46).

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