Opening the insert

Abstract

The opening and separating insertion piece (1, 2) of the utility model has an insertion rod (30), a seat rod (50), a first puller (10a, 70a) for reverse opening and a second puller (10b, 70b) for normal opening, the first puller (10a, 70a) has a claw part (22, 82) capable of advancing and retreating relative to a chain tooth guide path (17), the seat rod (50) has a seat rod main body part (53) installed on a zipper tape and a bulging part (55) bulging from the seat rod main body part (53) toward the claw part of the first puller kept at a sliding limit position in a width direction.

Description

Technical Field

[0001] This utility model relates to an opening and closing insert for zippers. Background Technology

[0002] In the past, some zippers were equipped with a release insert so that when the zipper pull slids and the left and right zipper teeth are completely separated, the left and right zipper teeth can be pulled apart.

[0003] As for such zipper pulls, there are known types of zipper pulls that use a pusher bar, a base bar, a base body, and a zipper pull to connect and open the left and right zipper teeth, and double-ended zipper pulls that use a pusher bar, a base bar, and two zipper pulls to connect and open the left and right zipper teeth. Furthermore, the common type of zipper pull is sometimes referred to as a straight-opening type zipper pull.

[0004] An example of a zipper puller for use in zippers is described in, for example, Japanese Patent Application Publication No. 2002-136309 (Patent Document 1). In the zipper puller described in Patent Document 1, an inclined surface is provided on the upper surface of the pull bar, extending upwards from the tip of the pull bar towards the base of the pull bar. This prevents the claw portion provided on the cover of the zipper head from obstructing the insertion of the pull bar when it is inserted into the zipper pull. Therefore, the insertion of the pull bar can be performed smoothly.

[0005] Existing technical documents

[0006] Patent documents

[0007] Patent Document 1: Japanese Patent Application Publication No. 2002-136309 Utility Model Content

[0008] Problems to be solved by utility models

[0009] In the zipper described in Patent Document 1, the claw portion of the cover is configured to protrude into the guide path of the zipper teeth and engage with the zipper teeth, thereby forming a stopping mechanism. In such a stopping mechanism, when the zipper is stopped relative to the zipper teeth, the claw portion of the cover inserts into and engages with the zipper teeth, thus holding the zipper in its stopped position. In the following description, as in Patent Document 1, a zipper in which the claw portion is integrally provided with the cover and the cover is configured to swing up and down is sometimes referred to as a cover-movable zipper.

[0010] However, the stop mechanism installed on the zipper pull has been constructed in various ways depending on the purpose of the zipper and the shape of the zipper pull. In addition, the position of the claw protruding into the zipper teeth guide path of the zipper pull body and the size of the claw are mostly different between zipper pulls with different stop mechanism constructions.

[0011] Therefore, when using a puller with a stop mechanism to form an open / close insert, the open / close insert is usually formed taking into account the position and size of the insert bar, the base bar, and the claw of the puller.

[0012] However, when the insert and base of the release insert are formed in a manner corresponding to a zipper pull with a stop mechanism, and the release insert is formed using a zipper pull with a different type of stop mechanism, the insert may sometimes get caught on the claw of the zipper pull during insertion and removal operations. As a result, there is a problem that reduces the operability of the release insert (especially the operability of the insert).

[0013] This invention was made in view of the above-mentioned problems, and its purpose is to provide an opening and closing insert that prevents the insert from getting caught on the claw of the zipper when it is inserted into the zipper.

[0014] Solution for solving the problem

[0015] To achieve the above objectives, the zipper opening / closing insert provided by this utility model is a zipper opening / closing insert for zippers, wherein the zipper opening / closing insert includes: a insert bar disposed on the first zipper tooth strip of the zipper; a seat bar disposed on the second zipper tooth strip of the zipper; a first zipper pull for reverse opening; and a second zipper pull for forward opening. The seat bar is configured to hold the first zipper pull and the second zipper pull at a sliding limit position. The first zipper pull has a claw portion that can move forward and backward relative to the zipper tooth guide path. The seat bar has: a seat bar body portion mounted on the zipper strip of the second zipper tooth strip; and a bulge portion that protrudes in the width direction from the seat bar body portion toward the claw portion of the first zipper pull held at the sliding limit position.

[0016] In the opening and closing insert of this utility model, it is preferred that the bulge portion has a shape that approaches or contacts the claw portion of the first pull head which is held at the sliding limit position.

[0017] Alternatively, preferably, the insert bar has an insert bar body portion mounted on the zipper tape of the first zipper tooth, the insert bar body portion having: an upper surface that is disposed opposite to the upper wing plate of the first zipper head; and a lower surface that is disposed opposite to the lower wing plate of the first zipper head, the top end portion of the upper surface side of the insert bar body portion having an inclined surface that is inclined downward toward the corner portion of the top end portion disposed opposite to the seat bar.

[0018] Furthermore, preferably, the bulge has a protrusion that extends in the width direction beyond the width direction centerline of the first pull head held at the sliding limit position.

[0019] In this case, it is preferable that the protrusion has a shape that arranges the claw portion of the first pull head within the forming range of the protrusion in the sliding direction of the pull head.

[0020] In this invention, preferably, the bulge portion has a posture control portion that can abut against the top end of the insert rod inserted into the first pull head to control the posture of the insert rod.

[0021] Additionally, preferably, the bulge has a bulge tip portion disposed furthest from the main body portion of the seat bar in the width direction, and the bulge tip portion is disposed in the sliding direction of the zipper head at a position closer to the rear opening of the first zipper head than the claw portion of the first zipper head held at the sliding limit position.

[0022] Furthermore, preferably, the base bar has an inner edge opposite to the insert bar when viewed in plan view of the base bar, the inner edge of the base bar having: a bulging top portion, which is the portion of the bulging portion that is furthest from the main body of the base bar in the width direction; a first inclined portion that extends from the bulging top portion toward the base end of the base bar and is inclined relative to the sliding direction of the pull head; and a second inclined portion that extends from the bulging top portion toward the top portion of the base bar and is inclined relative to the sliding direction of the pull head, wherein the first inclined angle of the first inclined portion relative to the sliding direction of the pull head is larger than the second inclined angle of the second inclined portion relative to the sliding direction of the pull head.

[0023] In this invention, preferably, the chain tooth guide path of the first zipper has a narrow section. When the first zipper is held at the sliding limit position, at the narrow section, the width of the space where the insert bar can be inserted is limited by the bulge of the seat bar to be less than 50% of the width of the chain tooth guide path.

[0024] In this case, it is preferable that the chain tooth guide path of the first zipper has a wide section, in which the width of the space in the chain tooth guide path into which the insert bar can be inserted is larger than the width of the narrow section, and the wide section is positioned closer to the rear opening of the first zipper than the narrow section.

[0025] Effects of the utility model

[0026] According to the present invention, when a plug and a base are formed in correspondence with a zipper head having a stop mechanism, even if a different type of zipper head with a different stop mechanism is used for the plug and the base, the plug can be prevented from getting caught on the claw of the zipper head when it is inserted into the zipper head. Attached Figure Description

[0027] Figure 1 This is a partial cross-sectional view schematically illustrating an embodiment of the present invention.

[0028] Figure 2 It is a schematic representation Figure 1 The top view of the insert rod shown.

[0029] Figure 3 Viewed from the inside in the width direction. Figure 2 The side view of the insert shown.

[0030] Figure 4 yes Figure 2 A cross-sectional view of the insert at line IV-IV shown.

[0031] Figure 5 It is a schematic representation Figure 1 The top view of the seat bar for opening and closing the insert is shown.

[0032] Figure 6 yes Figure 5 The bottom view of the base rod shown.

[0033] Figure 7 Viewed from the outside in the width direction Figure 5 The side view of the base rod shown.

[0034] Figure 8 It is a schematic representation Figure 1 A partial perspective view of the first pull head used for opening and closing the insert.

[0035] Figure 9 This is an explanation Figure 1 This diagram illustrates the relationship between the seat bar in the release insert and the pull head body and claw of the first pull head.

[0036] Figure 10 This means that in Figure 1 The diagram shows the insertion of the insert bar relative to the first and second pull heads in the opening and closing insert.

[0037] Figure 11 This is a partial cross-sectional view schematically representing a modified example of an open-ended insert.

[0038] Explanation of reference numerals in the attached figures

[0039] 1, 2, Sliding insert; 10a, First sliding head; 10b, Second sliding head; 11, Sliding head body; 12, Upper wing plate; 13, Lower wing plate; 14, Connecting post; 15, Flange; 16, Cover mounting part; 16a, Protrusion; 17, Chain tooth guide path; 18, Claw hole; 20, Stop claw body; 21, Claw body; 21a, Mounting opening; 22, Claw part; 23, Elastic force application part; 25, Reference center line (center line in width direction); 26, Narrow path part; 27, Wide path part; 27a, First wide path part; 27b, Second wide path part 30. Insert rod; 30a. Upper half of insert rod; 30b. Lower half of insert rod; 31. Base end of insert rod (front end of insert rod); 32. Top end of insert rod (rear end of insert rod); 33. Main body of insert rod; 34. Extension of insert rod; 34a. Engaging recess; 34b. Engaging protrusion; 35. Engaging groove; 36. Base end protrusion; 37. Claw receiving recess; 38. Top inclined surface; 41. Forming recess; 42. Upper forming recess; 42a. Front recess; 42b. Rear recess; 43. Lower forming recess; 43a. Front recess; 43b. 44. Rear recess; 45. Front pin inclined surface; 50. Rear pin inclined surface; 50. Seat bar; 50a. Upper half of seat bar; 50b. Lower half of seat bar; 50c. Outer edge of seat bar; 50d. Inner edge of seat bar; 51. Base end of seat bar (front end of seat bar); 52. Top end of seat bar (rear end of seat bar); 53. Main body of seat bar; 54. Engaging protrusion; 54a. Connecting part; 55. Protrusion; 55a. Protruding top end; 55b. First inclined part (posture control part); 55c. Second inclined part; 55d. Protrusion; 55e. Forming Scope; 56, Sliding head stop part; 57, First claw receiving recess; 58, Second claw receiving recess; 61, Forming recess; 62, Upper forming recess; 63, Lower forming recess; 65, Imaginary straight line; 66, First base rod recess; 67, Second base rod recess; 70a, First cover movable type sliding head (First movable type sliding head); 70b, Second cover movable type sliding head (Second movable type sliding head); 71, Sliding head body; 73, Lower wing plate; 74, Connecting column; 75, Flange part; 82, Claw part; θ1, First tilt angle; θ2, Second tilt angle. Detailed Implementation

[0040] The following are examples and references to the appendix. Figure 1 The preferred embodiments of this utility model will be described below.

[0041] Figure 1 This is a schematic partial cross-sectional view illustrating the opening and closing of the insert in this embodiment. Figures 2-4 These are schematic top views, side views, and cross-sectional views of the insert rod that forms the opening and closing insert in this embodiment. Figures 5-7These are schematic top, bottom, and side views of the base rod forming the opening and closing insert in this embodiment. Furthermore, in this embodiment, in... Figure 1 And the following Figure 9 and Figure 10 In order to clearly and easily represent the features of this utility model, the first pull head and the second pull head are represented by the shape of a cross section orthogonal to the top and bottom, and the insert rod and the base rod are represented by the shape viewed from above, not by a cross section.

[0042] In the following description relating to the zipper and the zipper pull insert 1, the front-back direction is the direction along the length of the pair of first and second zipper teeth, and also the direction along the sliding direction of the first zipper pull 10a and the second zipper pull 10b. In this case, in the front-back direction, the direction in which the second zipper pull 10b slides to close the zipper for forward opening and the direction in which the first zipper pull 10a slides to open the zipper for reverse opening are defined as front, and the opposite direction is defined as rear.

[0043] The left-right direction is the direction along which a pair of zipper teeth move closer together and further apart. Alternatively, the left-right direction can be referred to as the width direction of the zipper teeth, insert bar 30, and base bar 50. In this case, in the left-right direction, the orientation of the zipper teeth closer to the target side is defined as the inner side of the left-right direction, and the orientation of the zipper teeth further away from the target side is defined as the outer side of the left-right direction. Similarly, the orientation of the insert bar 30 and base bar 50 of the insert 1 closer together is defined as the inner side of the left-right direction, and the orientation further apart is defined as the outer side of the left-right direction. Furthermore, in a cross-sectional view of the zipper teeth perpendicular to the front-back direction, the width direction is the direction perpendicular to the thickness of the zipper teeth (or along the surface or back side of the zipper teeth).

[0044] The up-down direction is orthogonal to the front-back and left-right directions mentioned above. Alternatively, the up-down direction can be referred to as the front-back direction of the zipper, or the thickness direction of the zipper tape, insert bar 30, and base bar 50. In this case, in the up-down direction, the orientation of the side where the stop claw body 20 (claw portion 22) of the zipper head is arranged relative to the chain teeth of the first and second zipper tapes is set as the upward side, and the orientation of the opposite side is set as the downward side.

[0045] Furthermore, specifically, in the case of the zipper and the opening / closing insert 1 in this embodiment, the front-to-back direction is... Figure 1 The vertical direction on the paper. The horizontal direction is... Figure 1 The left-right direction on the paper. The up-down direction is... Figure 1 The reverse side of the paper. In this case, the top is... Figure 1 The paper's front and back sides are facing downwards. Figure 1The orientation of the inside of the paper.

[0046] The zipper in this embodiment is provided with Figure 1 The double-ended type of zipper insert 1 is shown. This zipper insert 1 is located at the rear end of the zipper.

[0047] The zipper of this embodiment has a pair of first zipper tooth strips (not shown) and second zipper tooth strips (not shown). Additionally, the zipper includes: a first slider 10a and a second slider 10b, which are slidable along the tooth rows (not shown) provided in each zipper tooth strip; a stop member (not shown) disposed adjacent to the front end of the left and right tooth rows; a guide bar 30 disposed adjacent to the rear end of the tooth rows in the first zipper tooth strip; and a seat bar 50 disposed adjacent to the rear end of the tooth rows in the second zipper tooth strip.

[0048] The first zipper pull 10a is positioned further rearward than the second zipper pull 10b. The first zipper pull 10a is a reverse-opening zipper pull that separates the left and right chain teeth by sliding the first zipper pull 10a along the chain teeth in a direction away from the insert bar 30 and the base bar 50. The second zipper pull 10b is a forward-opening zipper pull that engages the left and right chain teeth by sliding the second zipper pull 10b along the chain teeth in a direction away from the insert bar 30 and the base bar 50.

[0049] The opening / closing insert 1 of this embodiment has the aforementioned insert bar 30, base bar 50, first pull head 10a, and second pull head 10b, forming a double-opening tail type opening / closing insert 1. The insert bar 30 and base bar 50 forming the opening / closing insert 1 may also differ from the first pull head 10a and second pull head 10b in their construction relative to the stopping mechanism (see reference). Figure 8 The stop mechanism is formed by combining the pull heads (e.g., the first cover movable pull head 70a and the second cover movable pull head 70b described later) to form a stop mechanism. Figure 11 The example shown is an example of an open / closed plug-in 2.

[0050] In the zipper of this embodiment, the first zipper tooth tape, the second zipper tooth tape, and the stop member are formed in essentially the same way as the left zipper tooth tape, the right zipper tooth tape, and the stop member used in conventional zippers with a double-ended type of open-end insert.

[0051] For example, in this embodiment, although the first zipper tooth belt disposed on the left and the second zipper tooth belt disposed on the right are not shown in the figure, they each have a longitudinally elongated zipper belt in the shape of a strip and a plurality of zipper teeth fixed to the zipper belt. Each zipper belt on the left and right has a belt body portion and a core wire portion formed on the inner side edge portion of the zipper belt. The core wire portion has a shape that bulges out relative to the belt body portion in the vertical direction.

[0052] Multiple zipper teeth are formed by injection molding synthetic resin onto the side edges of the zipper tape, including the core wire portion. These multiple zipper teeth are arranged at constant intervals along the length (front-to-back direction) of the zipper tape, thereby forming a tooth row for the zipper pull to be slidably mounted.

[0053] Each zipper tooth is fixed to the zipper tape by covering a portion of the upper surface (tape surface) and a portion of the lower surface (tape back) of the zipper tape in a manner that encloses the side edge of the zipper tape. Each zipper tooth has: a tooth body portion fixed to the zipper tape; a neck portion extending inward from the tooth body portion in a left-right direction; an engaging head portion extending further inward from the neck portion in a left-right direction; and a pair of shoulders portion protruding from the neck portion in a front-back direction.

[0054] The neck of the zipper tooth is necked in a shape that tapers in the front-to-back direction. The engaging head is generally oblong when viewed from above. An insertion recess is formed at the top of the engaging head (the inner end in the left-to-right direction) along the front-to-back direction for inserting into the shoulder of the zipper tooth to be engaged. Furthermore, in this invention, the zipper tape and zipper teeth are not particularly limited and can be varied depending on the application of the zipper.

[0055] A stop member (not shown) is provided adjacent to the front end of the zipper teeth on each of the left and right first and second zipper teeth. By providing the stop member, the sliding limit position in front of the second zipper pull 10b is set, and the first zipper pull 10a and the second zipper pull 10b are prevented from falling off from the front side of the zipper teeth.

[0056] As described above, the zipper puller 1 of this embodiment includes: a pull bar 30 disposed on the left side of the first zipper tooth strip (not shown); a base bar 50 disposed on the right side of the second zipper tooth strip (not shown); and a first zipper head 10a and a second zipper head 10b, which are slidably mounted on the tooth row of the second zipper tooth strip.

[0057] In the zipper puller 1 of this embodiment, when viewed from above, a pusher 30 is provided on the first zipper tooth on the left side, and a seat bar 50 is provided on the second zipper tooth on the right side. Therefore, the zipper puller 1 of this embodiment is formed as a right-insertion type zipper puller 1 such that when a zipper having the zipper puller 1 is installed on, for example, clothing, a person wearing the clothing operates the pusher 30 of the zipper puller 1 with their right hand.

[0058] In this right-insertion type of detachable insert 1, the first zipper pull 10a and the second zipper pull 10b are mounted in a manner that prevents them from being detached from the second zipper tooth row on the right side of the feed bar 50. Furthermore, the first zipper pull 10a and the second zipper pull 10b are formed with the same structure as each other, and are mounted in the zipper tooth row with their rear openings facing each other, as described later.

[0059] For example, such as Figure 8 As shown, the first slider 10a and the second slider 10b each have: a slider body 11; a stop claw 20 mounted on the slider body 11; a cover (not shown) that covers the stop claw 20 from above and is fixed to the slider body 11; and a pull tab (not shown) that is held in place by means of a shaft mounted between the slider body 11 and the cover. In the first slider 10a and the second slider 10b, the stop claw 20 is mounted on the slider body 11 in a swingable manner within the cover.

[0060] The zipper pull body 11 includes: an upper wing plate 12; a lower wing plate 13, which is separately disposed from the upper wing plate 12; a connecting post 14, which connects the front end (shoulder-side end) of the upper wing plate 12 and the front end (shoulder-side end) of the lower wing plate 13; upper and lower flange portions 15, which are disposed on the left and right side edges of the upper wing plate 12 and the lower wing plate 13; and front and rear cover mounting portions 16, which protrude upward from the upper wing plate 12. A protrusion 16a is provided at the upper end of the front cover mounting portion 16, which can be inserted into the mounting opening 21a (described later) of the stop claw body 20.

[0061] At the front end of the zipper pull body 11, left and right shoulder openings are formed to clamp the guide post in the middle. A rear opening is formed at the rear end of the zipper pull body 11. A roughly Y-shaped zipper tooth guide path 17 connecting the left and right shoulder openings and the rear opening is formed between the upper wing plate 12 and the lower wing plate 13. A claw hole 18 is provided in the zipper pull body 11, which passes through the upper wing plate 12 and the rear cover mounting portion 16 in the vertical direction. A through gap for the zipper tape to pass through is formed between the upper flange portion 15 and the lower flange portion 15 of the zipper pull body 11.

[0062] The stop claw body 20 is formed by stamping a metal sheet such as a copper alloy. The stop claw body 20 is sometimes referred to as a locking pin. The stop claw body 20 includes: a claw body 21, which has a generally C-shaped shape when viewed from the side; a claw portion 22, which extends from the rear end of the claw body 21 with a reduced width (left-right dimension); and an elastic force-applying portion 23, which branches upward from the claw body 21.

[0063] The claw body 21 is formed from its front end to its rear end with a constant width. The claw body 21 has a generally rectangular mounting opening 21a and a narrow opening extending rearward in a straight line from the mounting opening 21a. When the stop claw 20 is placed on the zipper head body 11, the protrusion 16a provided on the zipper head body 11 is inserted into the mounting opening 21a of the claw body 21.

[0064] The claw portion 22 of the stop claw body 20 extends downward from the rear end of the claw body portion 21. The claw portion 22 is configured to enter and exit via the claw hole 18 provided in the zipper head body 11 relative to the zipper tooth guide path 17 of the zipper head body 11. The claw portion 22 engages with the tooth row of the first zipper tooth chain or the second zipper tooth chain that passes through the zipper tooth guide path 17 by entering the zipper tooth guide path 17 of the zipper head body 11.

[0065] Thus, the stop mechanisms respectively provided on the first zipper pull 10a and the second zipper pull 10b function to lock the first zipper pull 10a and the second zipper pull 10b so as not to slide relative to the chain teeth. In this embodiment, the stop claw body 20 is installed on the zipper pull body 11 such that the claw portion 22 can move within a small range in the left-right direction within the chain tooth guide path 17.

[0066] By installing the stop claw 20 between the zipper head body 11 and the cover, the elastic force-applying part 23 of the stop claw 20 abuts against the top (upper wall) of the cover and elastically deforms close to the claw body 21. As a result, the elastic force-applying part 23 generates an elastic force that applies downward force to the claw body 21, so the claw 22 can be inserted into the chain tooth guide path 17 through the claw hole 18 of the zipper head body 11.

[0067] The cover of the zipper pull (not shown) has a box-shaped shape with an opening at the bottom. With the cover mounting portions 16 located at the front and rear of the zipper pull body 11 housed inside the cover, the cover is fixed to the cover mounting portions 16 at the front and rear of the zipper pull body 11 by partially pressing several parts of the cover toward the front and rear cover mounting portions 16 and plastically deforming them.

[0068] The first zipper pull 10a and the second zipper pull 10b can engage and disengage the chain teeth by sliding along the left and right chain teeth. The first zipper pull 10a can slide rearward to a position abutting against the zipper pull stop 56 (described later) provided on the base bar 50, and the sliding limit position of the rear side of the first zipper pull 10a is determined by the zipper pull stop 56. The second zipper pull 10b can slide rearward to a position contacting the first zipper pull 10a abutting against the zipper pull stop 56, and the sliding limit position of the rear side of the second zipper pull 10b is determined by the zipper pull stop 56 and the first zipper pull 10a.

[0069] The insert 30 of the zipper puller 1 is fixed across the upper and lower surfaces of the zipper pull by injection molding of synthetic resin into the zipper pull of the first zipper tooth belt. The insert 30 is arranged adjacent to the rear end of the tooth row in the first zipper tooth belt and continuous with the tooth row.

[0070] Relative to the first zipper pull 10a and the second zipper pull 10b, which are held at their rearmost sliding limit positions, the insert 30 can be inserted from the shoulder opening of the second zipper pull 10b into the chain tooth guide path 17 of the second zipper pull 10b and the chain tooth guide path 17 of the first zipper pull 10a. Alternatively, it can be pulled out from the chain tooth guide path 17 of the first zipper pull 10a and the second zipper pull 10b via the shoulder opening of the second zipper pull 10b.

[0071] In this embodiment, the insert bar 30 has an upper half 30a (first insert bar half) disposed on the upper surface side of the zipper tape and a lower half 30b (second insert bar half) disposed on the lower surface side of the tape, with the center position in the thickness direction of the zipper tape as the dividing point. The insert bar 30 has a base end portion (front end portion) 31 disposed on the side of the insert bar 30 near the zipper teeth and a tip portion (rear end portion) 32 disposed on the side of the insert bar 30 away from the zipper teeth in the front-back direction.

[0072] like Figures 2-4 As shown, the insert bar 30 of this embodiment includes: an insert bar body portion 33, which is installed on the zipper tape of the first zipper tooth belt; an insert bar extension portion 34, which extends from the front side portion of the insert bar body portion 33 toward the inner side in the left-right direction; an engaging groove portion 35, which is provided in the insert bar extension portion 34; a base end protrusion portion 36, which protrudes from the insert bar base end portion 31 of the insert bar body portion 33 toward the inner side in the left-right direction; and a claw receiving recess portion 37, which is provided in the middle portion in the front-rear direction of the insert bar body portion 33.

[0073] Additionally, the insert 30 has: a top inclined surface 38, which is provided at the top end 32 of the insert body 33; four shaped recesses 41, which have a shape that is recessed from the upper or lower surface of the insert body 33; a front pin inclined surface 44, which extends forward from one of the shaped recesses 41 on the upper surface side; and a rear pin inclined surface 45, which extends rearward from one of the shaped recesses 41 on the lower surface side.

[0074] The insert bar body 33 is elongated in the front-to-back direction and is fixed to the side edge of the zipper tape. For example, if the insert bar body 33 is divided into three equal parts in the front-to-back direction, the insert bar body 33 has a front part, a middle part, and a rear part sequentially from the side closest to the zipper teeth. The insert bar body 33 has a shape in which the middle part in the front-to-back direction is slightly bulging inward in the left-to-right direction. The insert bar body 33 has an upper insert bar surface (first surface) facing upward and a lower insert bar surface (second surface) facing downward.

[0075] When the insert rod body 33 is inserted into the first pull head 10a and the second pull head 10b, the upper surface of the insert rod body 33 faces the upper wing plate 12 of the first pull head 10a and the second pull head 10b. The upper surface of the insert rod has a flat surface orthogonal to the vertical direction and an inclined surface that slopes slightly downward toward the rear (see reference). Figure 3 and Figure 4 The flat surface of the upper surface of the insert extends from the base end 31 of the insert to a position in the insert 30 that is rearward from the center position in the front-rear direction. In order to facilitate the insertion of the insert 30 into the shoulder opening of the second pull head 10b, the inclined surface of the upper surface of the insert is provided in at least a portion of the rear half of the insert body 33.

[0076] When the insert bar body 33 is inserted into the first zipper pull 10a and the second zipper pull 10b, the lower surface of the insert bar body 33 is opposite to the lower wing plates 13 of the first zipper pull 10a and the second zipper pull 10b. The lower surface of the insert bar is formed by a flat surface orthogonal to the vertical direction. The thickness dimension (vertical dimension) between the flat surface of the upper surface of the insert bar body 33 and the lower surface of the insert bar is set to be the same as the thickness dimension of the zipper teeth.

[0077] The insertion rod extension 34 is integrally provided on the front side of the insertion rod body 33. The insertion rod extension 34 protrudes from the center or approximately the center of the insertion rod body 33 in the vertical direction with a constant or substantially constant thickness. An inner sidewall surface facing in the left and right direction is provided on the insertion rod extension 34 opposite to the base rod 50.

[0078] The front end of the insert bar extension 34 is provided with a rearwardly curved concave engaging recess 34a and a forward-protruding engaging protrusion 34b. When the left and right zipper teeth are engaged, the engaging recess 34a and the engaging protrusion 34b engage with the zipper teeth of the second zipper tooth belt on the right side. (The insert bar extension 34 is shown in a top view of the insert bar 30.) Figure 2 In addition to the engaging recess 34a and engaging protrusion 34b, the insert rod extension 34 has a roughly triangular shape in which the width dimension (dimension in the left and right direction) increases toward the front.

[0079] The engaging groove 35 of the insert rod 30 is disposed in the central part of the insert rod extension 34 in the vertical direction, corresponding to the engaging protrusion 54 of the base rod 50 (described later). Furthermore, it is formed such that it is recessed from the inner sidewall surface of the insert rod extension 34 in the horizontal direction toward the outer side in the horizontal direction. When the insert rod 30 is received in the chain tooth guide path 17 of the first zipper pull 10a and the second zipper pull 10b, the engaging groove 35 engages with the engaging protrusion 54 by inserting the base rod 50 into the engaging groove 35.

[0080] The claw receiving recess 37 of the insert rod 30 is used to... Figure 11 The claw portion 22 of the first cover movable pull head 70a shown is positioned in a manner corresponding to the middle portion of the insert body 33 in the front-rear direction, and has an opening on the outer side in the left-right direction. The claw receiving recess 37 has a bottom portion formed by a flat surface, a front end portion, a side edge portion, and a rear end portion provided in a manner surrounding the bottom portion.

[0081] The front end and side edge of the claw receiving recess 37 each have a stepped portion provided between the bottom surface of the claw receiving recess 37 and the upper surface of the insert body 33. The side edge of the claw receiving recess 37 is located inside the claw receiving recess 37 in the left-right direction. In addition, the side edge of the claw receiving recess 37 is inclined relative to the front-back direction with the rear end of the claw receiving recess 37 positioned further outward in the left-right direction than the front end of the claw receiving recess 37. The rear end of the claw receiving recess 37 has an inclined surface that slopes upward from the bottom surface of the claw receiving recess 37 toward the upper surface of the insert body 33.

[0082] The tip inclined surface 38 of the insert 30 is provided at the end of the upper surface portion 32 of the insert 30 in the left-right direction. The tip inclined surface 38 is formed by a plane that slopes downward from the vertex (corner) of the tip edge of the insert 30 in the left-right direction. Alternatively, the tip inclined surface 38 may be formed by a curved surface that slopes downward from the vertex.

[0083] By providing such a tip slope 38 at the tip 32 of the insert bar, the claw portion 22 of the first zipper 10a contacts the tip slope 38 of the insert bar 30 when the insert bar 30 is inserted into the chain tooth guide path 17 of the first zipper 10a (see reference). Figure 10 The claw 22 of the first pull head 10a can be lifted using the inclined surface 38 at the top, and / or the claw 22 of the first pull head 10a can be moved inward in the left-right direction. As a result, it is possible to prevent or suppress the situation where the tip of the insertion rod 30 is hooked on the claw 22 of the first pull head 10a and the insertion operation of the insertion rod 30 is hindered by the claw 22.

[0084] The forming recess 41 of the insert 30 is a pin indentation formed by pressing the zipper tape with a pin to position the zipper tape during injection molding of the insert 30 onto the zipper tape. In this embodiment, the forming recess 41 has two upper forming recesses 42 provided on the upper half 30a of the insert and two lower forming recesses 43 provided on the lower half 30b of the insert. The upper forming recesses 42 and the lower forming recesses 43 are positioned at corresponding positions on the upper half 30a and the lower half 30b of the insert 30.

[0085] The upper forming recess 42 has a front recess 42a provided on the front side portion in the front-rear direction of the insert body 33 and a rear recess 42b provided on the rear side portion in the front-rear direction of the insert body 33. The front recess 42a and the rear recess 42b of the upper forming recess 42 are identical in shape and are formed to be the same size. The front recess 42a and the rear recess 42b each have a shape that is recessed from the upper surface of the insert body 33 downward in the vertical direction. In addition, in the top view of the insert 30 ( Figure 2 It is circular (perfectly circular) when formed. A cylindrical space is formed in the upper recess 42.

[0086] The lower forming recess 43 has a front recess 43a located on the front side of the insert body 33 and a rear recess 43b located on the rear side of the insert body 33. The front recess 43a and the rear recess 43b of the lower forming recess 43 are identical in shape and size. The front recess 43a and the rear recess 43b are respectively recessed from the lower surface of the insert body 33 upwards along the vertical direction, and are circular (perfectly circular) when viewed from below (not shown). A cylindrical space is formed within the lower forming recess 43.

[0087] Furthermore, in this invention, the number, shape, and size of the forming recesses 41 (upper forming recess 42 and lower forming recess 43) provided on the insert 30 are not limited. For example, the forming recesses 41 may also be formed in shapes other than circles, such as ellipses or polygons, when the insert 30 is viewed from above or below.

[0088] A front pin inclined surface 44 is provided in the rear recess 42b of the upper formed recess 42, extending forward from the rear recess 42b. The front pin inclined surface 44 is inclined upward in such a way that the thickness dimension (vertical dimension) of the insert body 33 increases from the upper formed recess 42 towards the front. In other words, the front pin inclined surface 44 is inclined downward from the upper surface of the insert body 33 at a position closer to the rear recess 42b than the rear recess 42b.

[0089] The front pin inclined surface 44 is formed such that its width increases progressively towards the front. A stepped portion is provided between the front pin inclined surface 44 and the bottom surface of the rear recess 42b. Alternatively, in this invention, the front pin inclined surface 44 and the bottom surface of the rear recess 42b can also be formed smoothly and continuously without a stepped portion.

[0090] Here, the effect of the front pin inclined surface 44 will be briefly explained. For example, when the insert bar 30 and the seat bar 50 are combined with the first cover movable type pull head 70a (hereinafter referred to as the first movable type pull head 70a) and the second cover movable type pull head 70b (hereinafter referred to as the second movable type pull head 70b) to form a right-insertion type opening and closing insert 2, as will be described later, when the insert bar 30 is inserted from the shoulder opening of the second movable type pull head 70b (see example... Figure 11 In this embodiment, the positions of the claw portions 22 and 82 forming the stopping mechanism are different in the first zipper head 10a and the first movable zipper head 70a. Therefore, in the opening and closing insert 2, the claw portion 82 of the first movable zipper head 70a sometimes falls into the upper forming recess 42 (rear recess 42b).

[0091] In this case, by providing the aforementioned front pin inclined surface 44 on the insert rod 30, after the claw 82 falls into the upper forming recess 42, when the insert rod 30 is further inserted rearward, the claw 82 that has fallen into the upper forming recess 42 can be moved along the front pin inclined surface 44 while the claw 82 is lifted.

[0092] Therefore, it is possible to prevent or suppress the claw portion 82 of the first movable zipper 70a from hooking onto the upper shaped recess 42, thus allowing the insert bar 30 to be smoothly inserted into the chain tooth guide path of the first movable zipper 70a and the second movable zipper 70b. Furthermore, in this invention, a rear pin inclined surface extending rearward from the rear recess 42b can be provided for the rear recess 42b of the upper shaped recess 42 to replace the front pin inclined surface 44, or a rear pin inclined surface extending rearward from the rear recess 42b can be provided together with the front pin inclined surface 44.

[0093] In this embodiment, a rear pin inclined surface 45 extending rearward from the rear recess 43b of the lower formed recess 43 is provided (see reference). Figure 4 The rear pin inclined surface 45 is inclined upward in such a way that the thickness dimension (vertical dimension) of the insert body 33 increases from the rear recess 43b toward the rear.

[0094] The rear pin inclined surface 45 is formed such that its width increases rearward. A step is provided between the rear pin inclined surface 45 and the bottom surface of the lower formed recess 43. Alternatively, in this invention, the rear pin inclined surface 45 and the bottom surface of the lower formed recess 43 can also be formed smoothly and continuously without a step.

[0095] For example, when using the first movable zipper 70a and the second movable zipper 70b to form a left-insertion type opening and closing insert (not shown), when pulling out the insert 30 from the chain guide path of the first movable zipper 70a and the second movable zipper 70b, even if the claw 82 of the second movable zipper 70b falls towards the lower shaped recess 43 (rear recess 43b) of the insert 30, it can prevent or suppress the claw 82 from hooking into the lower shaped recess 43 and smoothly pull out the insert 30. Furthermore, in this invention, a front pin inclined surface extending forward from the rear recess 43b can be provided for the rear recess 43b of the lower shaped recess 43 to replace the rear pin inclined surface 45, or a front pin inclined surface extending forward from the rear recess 43b can be provided together with the rear pin inclined surface 45.

[0096] The mounting bar 50 for the zipper insert 1 is formed by injection molding of synthetic resin into the zipper tape of the second zipper tooth belt. The mounting bar 50 is arranged adjacent to and continuous with the zipper tooth row in the second zipper tooth belt. The mounting bar 50 is formed in such a way that it can hold the first zipper pull 10a and the second zipper pull 10b in the rearward sliding limit position.

[0097] The zipper bar 50 has an upper half (first zipper half) 50a disposed on the upper surface side of the zipper tape and a lower half (second zipper half) 50b disposed on the lower surface side of the tape, with the center position in the thickness direction of the zipper tape as the dividing point. The zipper bar 50 has a base end (front end) 51 disposed on the side of the zipper bar 50 near the zipper teeth and a top end (rear end) 52 disposed on the side of the zipper bar 50 away from the zipper teeth in the front-back direction.

[0098] like Figures 5-7 As shown, the zipper bar 50 includes: a zipper bar body 53, which is fixed to the zipper belt of the second zipper tooth belt; an engaging protrusion 54, which protrudes from the front side portion of the zipper bar body 53 in the front-rear direction toward the inner side in the left-right direction; a bulge 55, which bulges from the zipper bar body 53 toward the inner side in the left-right direction; four shaped recesses 61, which have a shape that is recessed from the upper or lower surface of the zipper bar body 53; a zipper stop portion 56, which is disposed at the top end portion (rear end portion) of the zipper bar body 53; and a first claw receiving recess 57 and a second claw receiving recess 58, which are disposed in the lower half 50b of the zipper bar.

[0099] The main body 53 of the seat bar has a shape that is longer in the front-to-back direction, and is also fixed to the side edge of the zipper tape. For example, in the top view of the seat bar 50 (see reference). Figure 5 When a connecting portion 54a is provided that passes through the rear end of the engaging protrusion 54 and connects to the main body portion 53 of the base rod, and extends along the front-rear direction along an imaginary straight line 65, the main body portion 53 of the base rod in this embodiment is positioned on the outer side in the left-right direction of the imaginary straight line 65. Figure 5 It is formed in the position of the right side and has a constant or approximately constant thickness.

[0100] Furthermore, for example, if the base bar of this utility model is formed without the engaging protrusion 54 as in this embodiment, the imaginary straight line dividing the main body of the base bar is set by a straight line that passes through the intersection of the base edge (front edge) in the base bar and the inner side edge in the left and right directions when the base bar is viewed from above, and extends along the front and back directions.

[0101] The zipper body 53 has an upper surface (first surface) facing upwards and a lower surface (second surface) facing downwards. Both the upper and lower surfaces of the zipper body 53 are formed by flat surfaces orthogonal to the vertical direction. When the first and second zipper pulls 10a and 10b are held in the zipper body 53, the upper and lower surfaces are respectively opposite to the upper and lower flanges 12 and 13 of the first and second zipper pulls 10a and 10b. The thickness between the upper and lower surfaces of the zipper body 53 is set to be the same as the thickness of the zipper teeth.

[0102] Top view of the seat bar 50 (see example) Figure 5 and Figure 9 When the lever 50 is in operation, it has an outer edge 50c of the lever 50 disposed on the outer side in the left-right direction. The outer edge 50c of the lever 50 has: a front outer edge that is bent into a concave shape away from the flange portion 15 of the first slider 10a and the flange portion 15 of the second slider 10b; a middle outer edge that extends from the rear of the front outer edge along the flange portion 15 of the first slider 10a; and a rear outer edge that extends from the rear of the middle outer edge away from the flange portion 15 of the first slider 10a.

[0103] The engaging protrusion 54 of the seat rod 50 protrudes inward from the center or approximately the center of the seat rod body 53 in the vertical direction, towards the left and right direction. The engaging protrusion 54 is shown in the top view of the seat rod 50. Figure 5 It has a roughly trapezoidal shape. The engaging protrusion 54 has a constant or substantially constant thickness that can be inserted into the engaging groove 35 provided in the insert 30.

[0104] like Figure 1 and Figure 9 As shown, the bulge 55 of the base bar 50 is formed such that when the base bar 50 is housed in a predetermined position in the chain guide path 17 of the first zipper pull 10a, it bulges from the base bar body 53 toward the claw portion 22 of the first zipper pull 10a (or toward the inner side in the left-right direction). The state in which the base bar 50 is housed in the predetermined position in the chain guide path 17 of the first zipper pull 10a can also be described as the state in which the first zipper pull 10a is held by the base bar 50 at its sliding limit position on the rear side.

[0105] In particular, the bulge 55 of this embodiment has a shape that approaches the claw portion 22 of the first slider 10a from the left and right directions. Furthermore, the bulge 55 has the same thickness as the main body portion 53 of the mounting bar. Additionally, in this invention, the bulge 55 of the mounting bar 50 may also have a shape that contacts the claw portion 22 of the first slider 10a from the left and right directions. The shape of the bulge 55 approaching the claw portion 22 refers to a shape in which the bulge 55 extends to a position very close to the claw portion 22, forming a small gap between the claw portion 22 and the bulge 55 (e.g., a gap smaller than the minimum width of the claw portion 22). The shape of the bulge 55 contacting the claw portion 22 refers to a shape in which no gap is formed between the claw portion 22 and the bulge 55, and the bulge 55 extends to a position where it directly contacts the claw portion 22.

[0106] The bulge 55 has a portion corresponding to the position of the claw portion 22 of the first pull head 10a in the front-rear direction, and its surrounding portion is shaped to be closest to the insert rod 30 in the left-right direction (width direction) of the bulge 55. The bulge 55 has a bulge tip portion 55a disposed furthest from the main body portion 53 (or imaginary line 65) in the width direction. This bulge tip portion 55a is located in the top view of the insert rod 50 ( Figure 5 When the inner edge 50d of the base rod 50 is located opposite to the insert rod 30, it is disposed in the base rod 50. In this case, the inner edge 50d of the base rod 50 is the side edge of the base rod 50 disposed on the inside in the width direction.

[0107] The inner edge 50d of the base bar 50 has: a bulging top portion 55a; a first inclined portion 55b extending from the bulging top portion 55a toward the base end portion 51 of the base bar and inclined relative to the front-back direction; and a second inclined portion 55c extending from the bulging top portion 55a toward the top portion 52 of the base bar and inclined relative to the sliding direction of the pull head. Furthermore, the bulging top portion 55a, the first inclined portion 55b, and the second inclined portion 55c are provided in the bulging portion 55.

[0108] By providing such a bulge 55 on the base bar 50, when the first pull head 10a and the second pull head 10b are held in the sliding limit position behind by the base bar 50, when the insert bar 30 is inserted from the shoulder opening of the second pull head 10b and moved to the insert bar receiving position, the range that the insert bar 30 can pass through in the chain tooth guide path 17 of the first pull head 10a can be limited, and the movement of the insert bar tip 32 (in particular, the tip inclined surface 38) is limited in such a way that it contacts the claw portion 22 of the first pull head 10a.

[0109] Therefore, the claw portion 22 of the first pull head 10a can be moved on the upper surface of the insert rod of the insert rod body 33 or between the insert rod 30 and the base rod 50 by using the inclined surface 38 at the top. Thus, the insert rod 30 can be stably and smoothly inserted into the insert rod receiving position without being easily hooked by the claw portion 22 of the first pull head 10a.

[0110] Furthermore, the insertion rod receiving position refers to the position in which the insertion rod 30 can be inserted into the innermost (rearward) side of the first pull head 10a and the second pull head 10b in the insertion direction of the insertion rod 30 inserted from the shoulder opening of the second pull head 10b. In addition, it also refers to the holding position of the insertion rod 30 that allows the second pull head 10b to slide forward.

[0111] like Figure 9 As shown, the protruding top end 55a of the protruding part 55 is positioned in the front-to-back direction at a position closer to the claw part 22 of the first pull head 10a (close to the rear opening of the first pull head 10a) than the claw part 22 of the first pull head 10a which is held in the rear sliding limit position.

[0112] The first inclined portion 55b of the bulge 55 is formed as a posture control portion (posture control surface) that can control the posture of the insert 30 by having the insert tip portion 32 of the insert 30 abut against it. By forming the bulge tip portion 55a and the first inclined portion (posture control portion) 55b in the bulge 55, the movement of the insert 30 to be inserted into the insert receiving position can be more appropriately restricted.

[0113] In the opening and closing insert 1 of this embodiment, the center line of the first pull head 10a held at the sliding limit position on the rear side in the left and right direction is defined as the reference center line (width direction center line) 25 (refer to). Figure 9 In this case, the bulge 55 of the base rod 50, when viewed from above, has a protrusion 55d that extends beyond the reference center line 25 and approaches the insert rod 30. This protrusion 55d includes a bulging tip portion 55a. Furthermore, in this embodiment, the bulge 55 has a claw portion 22 of the first pull head 10a, which is held at the sliding limit position, arranged in the front-rear direction within the forming range 55e of the protrusion 55d.

[0114] By providing the aforementioned protrusion 55d in the bulge 55, in the tooth guide path 17 of the first pull head 10a held at the sliding limit position, in the region in the front-back direction where the protrusion 55d is formed, the width of the space in the tooth guide path 17 into which the insert 30 can be inserted can be limited to less than 50% of the width of the tooth guide path 17 (i.e., the width between the left and right flanges 15).

[0115] Furthermore, the space in the chain guide path 17 of the first zipper pull 10a where the insert bar 30 can be inserted means that the insert bar 30 can pass through the chain guide path 17. In addition, in the first zipper pull 10a, the space (passage for the insert bar 30) that is restricted to less than 50% of the width dimension of the chain guide path 17 is defined as the narrow passage 26.

[0116] In this case, the tooth guide path 17 of the first zipper pull 10a has the aforementioned narrow section 26 and a wide section 27 whose width dimension is more than 50% of the width dimension of the tooth guide path 17, serving as a passage for the insert rod 30 (a space in which the insert rod 30 can be inserted). In addition, the wide section 27 of the tooth guide path 17 has a first wide section 27a located in front of the protruding top end 55a of the protruding section 55 (closer to the rear opening of the first zipper pull 10a) and a second wide section 27b located in rear of the protruding top end 55a (away from the rear opening of the first zipper pull 10a).

[0117] The zipper guide path 17 of the first zipper pull 10a has a narrow section 26 and a first wide section 27a when the base bar 50 is inserted into the zipper guide path 17. This ensures a large space for inserting the bar 30 in the region near the rear opening of the zipper guide path 17 of the first zipper pull 10a. Therefore, it is easy to insert the bar 30 from the zipper guide path 17 of the second zipper pull 10b into the zipper guide path 17 of the first zipper pull 10a. Afterwards, the narrow section 26 of the zipper guide path 17 restricts the movement of the bar 30 inserted into the zipper guide path 17 of the first zipper pull 10a, thus preventing the bar 30 from getting caught on the claw section 22 of the first zipper pull 10a.

[0118] Furthermore, with the second wide section 27b of the chain guide path 17, the first zipper head 10b, which is held at the sliding limit position, can be easily slid forward when the insert bar 30 and the seat bar 50 are inserted into the chain guide path 17 of the chain guide path 17.

[0119] In the seat rod 50 of this embodiment, the angle at which the first inclined portion 55b provided in the bulge portion 55 is inclined relative to the front-rear direction is defined as the first inclined angle θ1, and the angle at which the second inclined portion 55c is inclined relative to the front-rear direction is defined as the second inclined angle θ2 (refer to...). Figure 5 In this case, the bulge 55 is formed such that the first tilt angle θ1 is larger than the second tilt angle θ2. As a result, the first wide path portion 27a described above can be easily set at a position forward of the bulge tip portion 55a of the bulge 55 with a simple structure, and thus, the insertion of the insert rod 30 relative to the first pull head 10a can be easily performed.

[0120] Furthermore, in this invention, the first tilt angle θ1 and the second tilt angle θ2 are the tilt angles of the portion of the inner edge 50d of the base rod 50 that is tilted at an angle of 5° or more relative to the front-back direction (in other words, the first tilt angle θ1 and the second tilt angle θ2 are respectively set as tilt angles excluding the tilt angles of the portion of the inner edge 50d of the base rod 50 that is tilted at an angle of less than 5° relative to the front-back direction).

[0121] The base rod 50 has: a first base rod recess 66, which is positioned forward of the protruding tip 55a of the protruding portion 55 and is recessed outward in the left-right direction relative to the protruding tip 55a; and a second base rod recess 67, which is positioned rearward of the protruding tip 55a of the protruding portion 55 and is recessed outward in the left-right direction relative to the protruding tip 55a. That is, the protruding tip 55a of the protruding portion 55 is positioned between the first base rod recess 66 and the second base rod recess 67 in the front-back direction.

[0122] The forming recess 61 of the seat bar 50 is a pin indentation formed by pressing the zipper tape with a pin to position the zipper tape during injection molding of the seat bar 50 onto the zipper tape. In this embodiment, the forming recess 61 has two upper forming recesses 62 provided on the upper half 50a of the seat bar and two lower forming recesses 63 provided on the lower half 50b of the seat bar. The upper forming recesses 62 and lower forming recesses 63 are positioned at corresponding locations on the upper half 50a and lower half 50b of the seat bar 50. Each forming recess 61 of the seat bar 50 is formed substantially the same as the forming recess 41 provided on the insert bar 30. Furthermore, in this invention, the number, shape, and size of the forming recesses 61 provided on the seat bar 50 are not limited.

[0123] The pull-head stop portion 56 of the base bar 50 protrudes downward from the lower surface of the base bar body portion 53, such that the lower wing plate 13 of the first pull head 10a abuts against it. The pull-head stop portion 56 restricts the rearward sliding of the first pull head 10a by abutting against it. The rearward sliding limit position of the first pull head 10a is determined by this pull-head stop portion 56.

[0124] The first claw receiving recess 57 of the base rod 50 is formed in the central portion of the base rod body 53 in the front-rear direction, recessed upward from the lower surface of the base rod body 53. The first claw receiving recess 57 opens at the inner edge of the base rod body 53. When using, for example, the insert rod 30, base rod 50, first pull head 10a, and second pull head 10b of this embodiment to form a left-insertion type opening and closing insert (not shown), the claw 22 of the first pull head 10a, which is held at the sliding limit position, can be inserted into the first claw receiving recess 57 and received in the first claw receiving recess 57.

[0125] The second claw receiving recess 58 of the base rod 50 is formed in a position on the base rod body 53 that is forward of the first claw receiving recess 57 and outward in the left-right direction from the lower surface of the base rod body 53. When using, for example, the insert rod 30 and base rod 50 of this embodiment, and the first movable pull head 70a and the second movable pull head 70b described above to form a left-insertion type opening and closing insert (not shown), the claw portion 82 of the first movable pull head 70a, which is held at the sliding limit position, can be inserted into the second claw receiving recess 58 and received therein. Alternatively, in this invention, the base rod 50 may be formed without the second claw receiving recess 58.

[0126] Then, while referring to Figure 1 , Figure 9 as well as Figure 10 The operation of engaging the teeth of the first and second zipper teeth when using the opening and closing insert 1 of this embodiment will be explained.

[0127] First, pinch the pull tab (not shown) of the first zipper pull 10a and slide the first zipper pull 10a to a position where it contacts the zipper pull stop 56 of the base bar 50 (the rear sliding limit position), and hold the first zipper pull 10a in place on the base bar 50. Furthermore, when the operation of the first zipper pull 10a moving towards the sliding limit position by the pull tab ends, the elastic force of the elastic force application part 23 of the stop claw body 20 can be used to automatically cause the claw part 22 of the stop claw body 20 to protrude into the chain tooth guide path 17 of the zipper pull body 11.

[0128] At this time, as Figure 9As shown, the claw portion 22 of the first zipper pull 10a is positioned to the left (away from the base bar 50) within the chain tooth guide path 17 in the left-right direction. Furthermore, the claw portion 22 of the first zipper pull 10a is positioned between the connecting post 14 and the point where the spacing between the left and right flange portions 15 begins to increase rearward. Additionally, the claw portion 22 of the first zipper pull 10a is positioned close to or in contact with the protruding portion 55 of the base bar 50.

[0129] After the first slider 10a is held in the sliding limit position, the pull tab (not shown) of the second slider 10b is pinched and slid to the sliding limit position where the rear end of the second slider 10b contacts the rear end of the first slider 10a, thus holding the second slider 10b in place on the base 50. The claw portion 22 of the second slider 10b, held in the sliding limit position, rests on the upper surface of the base body portion 53 and / or the engaging protrusion 54 at the base end 51 of the base 50.

[0130] Next, the insert bar 30 of the release insert 1 is inserted into the chain guide path 17 from the shoulder opening on the right side of the second zipper head 10b. Furthermore, by moving the insert bar 30 rearward, it enters both the chain guide path 17 of the second zipper head 10b and the chain guide path 17 of the first zipper head 10a. At this time, because the first inclined portion 55b is provided on the inner edge 50d of the base bar 50, even when the base bar 50 with the protruding portion 55 is inserted into the chain guide path 17 of the first zipper head 10a, a relatively large space is ensured in the area near the rear opening of the first zipper head 10a for inserting the insert bar 30. Therefore, the tip portion 32 of the insert bar 30 can be smoothly and stably inserted from the chain guide path 17 of the second zipper head 10b into the chain guide path 17 of the first zipper head 10a.

[0131] Then, for the tip 32 of the insert rod inserted into the second pull head 10b, by moving the insert rod 30 further rearward, as... Figure 10 As shown, the inclined surface 38 at the tip of the insert rod 32 contacts the claw portion 22 of the first zipper pull 10a. At this time, as described above, a bulging tip portion 55a is provided on the bulge portion 55 of the base rod 50 at a position forward of the claw portion 22 of the first zipper pull 10a. This narrows the space in the chain guide path 17 of the first zipper pull 10a, restricting the passage of the insert rod tip portion 32. Therefore, the insert rod tip portion 32 of the insert rod 30 passes through this space, allowing the claw portion 22 of the first zipper pull 10a to maintain stable contact with the inclined surface 38 at the tip of the insert rod tip portion 32.

[0132] Furthermore, a first inclined portion (posture control portion) 55b extending forward from the bulge tip 55a is provided on the bulge portion 55 of the base bar 50. As a result, even if the tip 32 of the insert bar 30 is inserted close to the base bar body 53 in an area near the rear opening of the chain tooth guide path 17 of the first zipper pull 10a, for example, the tip 32 of the insert bar 30 is guided by the first inclined portion 55b of the bulge portion 55, thereby properly controlling the posture of the insert bar 30 and allowing the tip 32 of the insert bar 30 to pass smoothly through the gap (space) between the bulge tip 55a of the bulge portion 55 and the flange portion 15 on the left side of the first zipper pull 10a.

[0133] In the opening and closing insert 1 of this embodiment, by bringing the tip inclined surface 38 of the insert rod tip 32 into contact with the claw portion 22 of the first pull head 10a as described above, the claw portion 22 of the first pull head 10a can be lifted using the tip inclined surface 38, and / or the claw portion 22 of the first pull head 10a can be moved inward in the left-right direction using the tip inclined surface 38. This prevents or inhibits the insert rod tip 32 from hooking onto the claw portion 22 of the first pull head 10a and hindering the insertion operation of the insert rod 30.

[0134] After the tip 32 of the insert rod contacts the claw 22 of the first pull head 10a, the insert rod 30 is further inserted rearward, as... Figure 1 As shown, the insertion rod 30 can be moved toward the insertion rod receiving position of the first pull head 10a and the second pull head 10b and held in that position.

[0135] After the insert bar 30 is held in the insert bar receiving position of the first zipper pull 10a and the second zipper pull 10b, the front-opening second zipper pull 10b is slid forward. This allows the left and right zipper teeth to engage sequentially from the rear, thus closing the zipper. Furthermore, after closing the zipper by sliding the second zipper pull 10b forward, sliding the rear-opening first zipper pull 10a forward allows the left and right zipper teeth to disengage sequentially from the rear, opening the zipper from the rear.

[0136] On the other hand, when opening the zipper from a closed state by using the second zipper pull 10b to separate the left and right zipper teeth and pull apart the first and second zipper tooth strips, firstly, the second zipper pull 10b is slid along the tooth row to its sliding limit position where it abuts against the first zipper pull 10a. Next, the insert bar 30 is pulled out from the tooth guide path 17 of the first and second zipper pulls 10a and 10b. Thus, the first zipper tooth strip with the insert bar 30 and the second zipper tooth strip with the base bar 50 can be pulled apart.

[0137] As described above, in this embodiment, the zipper opening / closing insert 1 is a combination of the insert bar 30 and the base bar 50. Figure 8 The first zipper pull 10a and the second zipper pull 10b, as shown, are formed with a stop claw body 20. In this zipper pull 1, by providing a protruding portion 55 on the base bar 50, when the insert bar 30 is inserted from the shoulder opening of the second zipper pull 10b into the chain tooth guide path 17 of the second zipper pull 10b and the chain tooth guide path 17 of the first zipper pull 10a, as described above, the tip portion 32 of the insert bar 30 is less likely to snag on the claw portion 22 of the first zipper pull 10a.

[0138] In addition, the insertion rod 30 and the seat rod 50 in this embodiment can also be connected to... Figure 11 The combination of the first movable zipper head 70a and the second movable zipper head 70b shown replaces the combination of the first zipper head 10a and the second zipper head 10b in this embodiment to form a modified example of the opening and closing insert 2.

[0139] In this configuration, the first movable zipper head 70a and the second movable zipper head 70b are mounted facing each other toward the chain teeth with the rear opening of the zipper head body 11 in opposite directions. The first movable zipper head 70a is a reverse-opening zipper head that separates the left and right chain teeth by sliding the first movable zipper head 70a forward along the chain teeth. The second movable zipper head 70b is a forward-opening zipper head that engages the left and right chain teeth by sliding the second movable zipper head 70b forward along the chain teeth.

[0140] In the modified example of the detachable insert 2, the first movable zipper head 70a and the second movable zipper head 70b are formed in essentially the same way as the zipper head described in Patent Document 1.

[0141] For example, the first movable zipper pull 70a has: a zipper pull body 71; a cover (not shown) rotatably mounted on the zipper pull body 71; an elastic member (not shown) mounted inside the cover and applying force to the cover; and a pull tab (not shown) held between the zipper pull body 71 and the cover. The elastic member may be, for example, a spring member.

[0142] The slider body 71 includes: an upper wing plate (not shown); a lower wing plate 73; a connecting post 74 that connects the upper wing plate and the lower wing plate 73; upper and lower flange portions 75 disposed on the left and right side edges of the upper wing plate and the lower wing plate 73; and a cover mounting portion (not shown) that protrudes upward from the upper wing plate. A claw hole (not shown) is provided in the upper wing plate of the slider body 71, extending through the upper wing plate in the vertical direction.

[0143] The cover has: a main body having a generally box-shaped shape with an opening at the bottom; and a claw 82 protruding downward from the side wall of the main body. In a modified example, the elastic member is provided inside the cover in such a way that it applies force to the cover in the direction in which the claw 82 of the cover moves toward the chain tooth guide path 17 of the pull head body 71.

[0144] Compared to the claw portion 22 of the first zipper pull 10a in the embodiment, the claw portion 82 of the cover body is larger in size (especially the size of the cross section of the claw portion 82 orthogonal to the vertical direction). The cross section of the claw portion 82 orthogonal to the vertical direction has an elongated shape in the front-rear direction. The claw portion 82 has a first claw surface facing the connecting post 74 side of the zipper pull body 71 and a second claw surface facing the rear opening side.

[0145] When viewed from the left and right sides, the first surface of the claw 82 is formed by an inclined surface or a curved surface that is bent into a convex shape. When viewed from the left and right sides, the second surface of the claw 82 is formed by a plane along the vertical direction or approximately the vertical direction. Moreover, compared with the claw 22 of the first pull head 10a in the embodiment, the claw 82 of the cover is positioned closer to the rear opening in the front-rear direction and on the outer side in the left-right direction.

[0146] The second movable slider 70b is constructed in the same way as the first movable slider 70a.

[0147] In this modified example of the open / close insert 2, when the teeth of the first zipper tooth chain and the second zipper tooth chain are engaged, the first movable zipper head 70a and the second movable zipper head 70b slide to the rearward sliding limit position and remain at the sliding limit position on the base bar 50.

[0148] Next, the insert bar 30 of the release insert 2 is inserted into the chain guide path from the shoulder opening of the second movable zipper head 70b. Furthermore, by moving the insert bar 30 rearward, it enters both the chain guide path of the second movable zipper head 70b and the chain guide path of the first movable zipper head 70a. At this time, in the area near the rear opening of the first movable zipper head 70a, a first inclined portion 55b is provided on the inner edge 50d of the base bar 50, ensuring a relatively large space for inserting the insert bar 30. Therefore, the tip 32 of the insert bar 30 can be smoothly inserted from the chain guide path 17 of the second movable zipper head 70b into the chain guide path 17 of the first movable zipper head 70a.

[0149] Subsequently, by moving the insert bar 30 further rearward, the tip portion 32 of the insert bar contacts the claw portion 82 of the first movable pull head 70a. At this time, the tip portion 32 of the insert bar is provided with a tip inclined surface 38, and the edge portions of the tip portion 32 of the insert bar, except for the tip inclined surface 38, are formed into a curved surface with chamfering. Therefore, after the tip portion 32 of the insert bar contacts the claw portion 82, the insert bar 30 moves rearward, thereby allowing the claw portion 82 to be easily lifted onto the upper surface of the insert bar body portion 33 using the tip inclined surface 38 or the edge portions of the tip portion 32 of the insert bar.

[0150] Then, the insertion rod 30 moves backward, thus, as Figure 11 As shown, the claw 82 of the first movable pull head 70a reaches the shaped recess 41 (rear recess 42b) provided on the upper half 30a of the insert rod 30 and falls into the shaped recess 41. In this case, the insert rod 30 is provided with a front pin inclined surface 44 extending forward from the shaped recess 41. Therefore, even if the claw 82 falls into the shaped recess 41, the insert rod 30 moves backward, and the front pin inclined surface 44 can be used to easily lift the claw 82 to the upper surface of the insert rod body 33.

[0151] By inserting the zipper pull 30 to its deepest point within the first movable zipper pull 70a and the second movable zipper pull 70b, the zipper pull 30 moves to the zipper pull receiving position. At this time, the claw portion 82 of the first movable zipper pull 70a is inserted into and received within the claw receiving recess 37 of the zipper pull 30. After the zipper pull 30 has moved to and remained in the zipper pull receiving position, the front-opening second movable zipper pull 70b slides forward. As a result, the left and right zipper teeth can engage sequentially from the rear, thus enabling the zipper to close.

[0152] In this modified example of the detachable insert 2, although the stopping structures of the first movable zipper head 70a and the second movable zipper head 70b are different from those of the first zipper head 10a and the second zipper head 10b in the above embodiment, the tip 32 of the insert 30 is less likely to get caught on the claw portion 82 of the first movable zipper head 70a when the insert 30 is inserted into the first movable zipper head 70a and the second movable zipper head 70b.

[0153] That is, by using the aforementioned insert bar 30 and seat bar 50, even if different types of pull heads with different configurations of the combined stopping mechanism are used to form different release inserts 1 and 2, it is possible to prevent the insert bar 30 from getting caught on the claw portions 22 and 82 of the first pull head 10a and 70a when inserting it into the first pull head 10a and 70a and the second pull head 10b and 70b. Therefore, the operability of the release inserts 1 and 2 (especially the operability of the insert bar 30) can be improved in each release insert 1 and 2. Furthermore, the sliding and starting properties of the first pull head 10a and 70a and the second pull head 10b and 70b can be improved.

[0154] Furthermore, even when the aforementioned insert rod 30 and seat rod 50 are combined with the first pull head 10a and the second pull head 10b of the embodiment, or with the first movable pull head 70a and the second movable pull head 70b of the modified embodiment, they can form right-insertion type opening and closing inserts 1 and 2 that can be operated with the right hand.

[0155] Furthermore, as described above, a rear pin inclined surface 45 is provided on the lower half 30b of the insert rod 30, and a first claw receiving recess 57 and a second claw receiving recess 58 are provided on the lower half 50b of the seat rod 50. Therefore, even when the insert rod 30 and seat rod 50 are combined with the first pull head 10a and the second pull head 10b of the embodiment, or with the first movable pull head 70a and the second movable pull head 70b of the modified embodiment, a left-hand type open-close insert (not shown) can be formed for left-hand operation of the insert rod 30. Therefore, the versatility of the insert rod 30 and seat rod 50 in the open-close insert can be improved, thus reducing the cost of the open-close insert 1.

[0156] Moreover, as mentioned above, it is possible to form left-insertion type open-end inserts 1 and 2 (see reference). Figure 1 and Figure 11 This can also form a right-insertion type of open-end insert (not shown), thereby reducing the variety of pull heads required for open-end inserts. Therefore, it is possible to further reduce manufacturing costs, improve productivity and manufacturing efficiency, and simplify quality and process management.

[0157] Furthermore, this utility model is not limited to the embodiments and modifications described above. Various modifications can be made as long as the structure is substantially the same as that of this utility model and achieves the same effect.

[0158] For example, in the above description, it is shown that... Figures 2-4 The shown insert 30 and Figures 5-7 The illustrated base bar 50 is combined with the first pull head 10a and the second pull head 10b of the embodiment to form the opening and closing insert 1, and combined with the first movable pull head 70a and the second movable pull head 70b of the modified example to form the opening and closing insert 2.

[0159] However, in this invention, the insert rod 30 and the seat rod 50 can also be combined with two pull heads having a stop mechanism other than those in the embodiments and comparative examples to form an opening / closing insert. Furthermore, in an opening / closing insert, the first pull head for reverse opening and the second pull head for forward opening can also use pull heads with different stop mechanism structures.

[0160] Furthermore, in this invention, as long as the base rod has the aforementioned base rod body and bulge, the shapes of the insert rod and the base rod can be changed.

[0161] Furthermore, there are no particular limitations on the applications of the zipper with the opening and closing insert of this utility model.

Claims

1. A zipper insert, characterized in that, The zipper inserts (1, 2) include: a insert bar (30) disposed on the first zipper tooth of the zipper; a seat bar (50) disposed on the second zipper tooth of the zipper; a first zipper pull (10a, 70a) for reverse opening; and a second zipper pull (10b, 70b) for forward opening. The seat bar (50) is configured to hold the first pull head (10a, 70a) and the second pull head (10b, 70b) at the sliding limit position. The first zipper (10a, 70a) has claws (22, 82) that can move forward and backward relative to the chain tooth guide path (17). The saddle (50) has: a saddle body portion (53) which is mounted on the zipper tape of the second zipper tooth tape; and a bulge portion (55) which bulges in the width direction from the saddle body portion (53) toward the claw portion (22, 82) of the first zipper head (10a, 70a) which is held in the sliding limit position.

2. The open / closed insert according to claim 1, characterized in that, The bulge (55) has a shape that is close to or in contact with the claw (22, 82) of the first pull head (10a, 70a) which is held in the sliding limit position.

3. The open / closed insert according to claim 1, characterized in that, The insert (30) has an insert body (33) that is installed on the zipper tape of the first zipper tooth tape. The main body (33) of the insert rod has: an upper surface that is disposed opposite to the upper wing plate (12) of the first pull head (10a, 70a); and a lower surface that is disposed opposite to the lower wing plate (13, 73) of the first pull head (10a, 70a). The top end (32) of the upper surface side of the main body (33) of the insert has an inclined surface (38) that is inclined downward toward the corner of the top end (32) that is opposite to the seat bar (50).

4. The open / closed insert according to claim 1, characterized in that, The bulge (55) has a protrusion that extends in the width direction beyond the width direction centerline (25) of the first pull head (10a, 70a) which is held at the sliding limit position.

5. The open / closed insert according to claim 4, characterized in that, The protruding portion (55) has a shape in which the claw portions (22, 82) of the first zipper (10a, 70a) are arranged within the forming range (55e) of the protruding portion in the sliding direction of the zipper.

6. The open / closed insert according to claim 1, characterized in that, The bulge (55) has a posture control part that can abut against the top end (32) of the insert (30) inserted into the first pull head (10a, 70a) to control the posture of the insert (30).

7. The open / closed insert according to claim 1, characterized in that, The bulge (55) has a bulge tip (55a) that is located furthest away from the main body (53) in the width direction. The bulging tip (55a) is positioned in the sliding direction of the zipper at a position closer to the rear opening of the first zipper (10a, 70a) than the claw portion (22, 82) of the first zipper (10a, 70a) which is held at the sliding limit position.

8. The open / closed insert according to claim 1, characterized in that, The base rod (50) has an inner edge (50d) that is opposite to the insert rod (30) when viewed in a plane. The inner edge (50d) of the seat bar has: a bulging top portion (55a), which is the portion of the bulging portion (55) that is furthest from the main body portion (53) of the seat bar in the width direction; and a first inclined portion that extends from the bulging top portion (55a) toward the base end portion (51) of the seat bar and is inclined relative to the sliding direction of the pull head. And a second inclined portion (55c), which extends from the bulging top portion (55a) toward the top portion (52) of the seat rod, and is inclined relative to the sliding direction of the pull head. The first tilt angle (θ1) of the first tilted part relative to the sliding direction of the slider is larger than the second tilt angle (θ2) of the second tilted part (55c) relative to the sliding direction of the slider.

9. The open / closed insert according to claim 1, characterized in that, The first zipper (10a, 70a) has a narrow section (26) in its tooth guide path (17). When the first zipper (10a, 70a) is held in the sliding limit position, the width of the space in the narrow section (26) where the insert bar (30) can be inserted is limited by the bulge (55) of the seat bar (50) to be less than 50% of the width of the tooth guide path (17).

10. The open / closed insert according to claim 9, characterized in that, The chain tooth guide path (17) of the first zipper (10a, 70a) has a wide section (27a), where the width of the space in the chain tooth guide path (17) where the insert bar (30) can be inserted is larger than the width of the narrow section (26). The wide section (27a) is positioned closer to the rear opening of the first pull head (10a, 70a) than the narrow section (26).

Images