TWI587807B - Zipper slide - Google Patents

Description

Zipper slider

The present invention relates to a slider for a zipper of the type having a main body, a pull tab and a locking pin.

As an example of the slider, there is a main body including a main body having a sprocket guiding path therein and a pair of tab mounting posts on the upper surface, and a pull tab rotatably supported by the pair of tabs a shaft for mounting the column, a cam protruding toward the outer circumference of the shaft, a grip portion separated from the shaft, a pair of arms joining the both ends of the shaft and the grip portion, and a locking pin mounted to the main body and by the cam And elastic deformation (Patent Documents 1, 2).

In the sliding members of Patent Documents 1 and 2, when the pull tab is in a fallen state with respect to the main body, the claw of the lock pin protrudes to the element guide path, so that the slider cannot move relative to the pair of element rows. On the other hand, the sliders are when the tab is in a standing state with respect to the main body, in other words, when the tab is grasped with a finger and the tab is lifted, the claw does not protrude to the element guide path in the main body, The slider can move forward and backward with respect to a pair of chain teeth.

Moreover, when the pull tab is in the upright state, the relationship between the upper surface of the main body and the pull tab is as follows. The slider of Patent Document 1 has a gap between the end surface on the axial side of the pair of arms and the upper surface of the main body. Further, in the sliding member of Patent Document 2, the front portion of the end surface on the axial side of each arm is in contact with the upper surface of the main body, and a gap exists between the rear portion of the end surface on the axial side of each arm and the upper surface of the main body. More specifically, the slider of Patent Document 2 is attached to the upper surface of the main body and a pair of groove portions are formed on the outer side in the width direction of the pair of tab mounting posts, after the groove portion is in the end surface of the arm side. There is a gap between the portion and the upper surface of the body.

As described above, in the sliders of Patent Documents 1 and 2, when the pull tab is in the standing state, the end faces on the axial side of the pair of arms are in an unstable state. Moreover, when the pull tab is in the upright state, the locking pin is elastically deformed by the cam, and a returning force is generated on the locking pin. Therefore, if the finger is pulled away from the pull tab, the pull tab is pulled up by the returning force of the locking pin. status.

Prior technical literature Patent literature

Patent Document 1: Japanese Patent Laid-Open Publication No. 2013-31691

Patent Document 2: WO2014-064753

However, if it is possible to stably maintain the upright state of the pull tab, it is convenient. For example, when one of the zippers is attached to the zipper chain, if the pull tab is in the upright state, the claw does not protrude to the sprocket guide, so that a pair of sprocket rows can be easily inserted into the sprocket guide road. In particular, when the sliding member is passed through a pair of element rows by the automatic machine, the pulling piece can be kept in an upright state to facilitate the installation of the slider.

In the case where the pull-tab is a die-cast molded product, the end surface of the shaft side of each arm is viewed from the extending direction of the shaft toward both ends of the thickness direction of the pull-tab toward the center portion. The gradually protruding shape, that is, the V shape, or the convex portion is provided at the central portion in the thickness direction of the tab. The V shape is formed by the inclination of the mold for the die casting mold. On the other hand, the convex portion is formed using a material filled into a gate of a die-casting mold.

However, if the end faces of the axial sides of the arms are formed in such a shape, the arms are to be held in an upright state so that the end faces of the axial sides of the arms are in contact with the upper surface of the body, and the arms are attached thereto. The V-shaped front end portion or the convex portion in the intermediate portion in the thickness direction is in contact with the upper surface of the main body, and the gap between the both end portions in the thickness direction and the upper surface of the main body is unstable.

The present invention has been made in consideration of the above-described actual circumstances, and its purpose is to stabilize the standing state of the pull tab.

The slider of the zipper of the present invention comprises a main body, a pull tab and a locking pin. The main body comprises: an upper wing plate and a lower wing plate, which are equal to the upper and lower opposite directions; the connecting column connects the upper wing plate and the lower wing plate to the upper end of the lower wing plate; the pair of pull tab mounting columns are equal to the upper wing The upper surface of the plate is erected in a state of being opposite to the right and left; the sprocket guiding path is branched into two by the connecting column between the upper wing and the lower wing; and a pair of shaft holes, etc. It is formed on a pair of tab mounting posts and penetrates left and right. The pull piece includes a grip portion, a shaft rotatably supported by the pair of shaft holes, a cam protruding from the outer circumference of the shaft, and a pair of arms that engage the left and right end portions of the shaft with the grip portion. The locking pin includes: a locking pin body portion mounted on an upper surface of the upper blade and colliding with the cam; and a claw facing downward from an end of the locking pin body portion opposite to an end portion mounted to the upper blade extend. Further, the upper blade has a claw hole that penetrates up and down and the claw enters the element guide path; a pair of first groove portions equal to the upper surface of the upper blade and the left and right direction with respect to the pair of shaft holes And a pair of contact portions, which are equal to the end surface of the upper side of the upper blade and the end faces of the arm sides of the arms in the upper and lower positions of the first groove portion.

When the center of the front and rear widths of the pair of first groove portions is the center point L, it is not necessary to determine whether or not the center point L is located directly below the center line passing through the center of each of the pair of shaft holes. However, in order to stably contact the end faces of the arms before and after the first groove portion when the pull-tab is in the standing state, it is preferable to set it as follows.

That is, the center point L which is the center of the front and rear widths of the pair of first groove portions is located directly below the center line passing through the center of each of the pair of shaft holes.

In the upper surface of the upper blade, the outer side of the pair of tab mounting posts may have a shape in which only the first groove portion is recessed. However, in order to stabilize the upright state of the tab, it is preferable to set it as follows.

In other words, the pair of contact portions are attached to the upper surface of the upper blade and are recessed before and after the first groove portion and are smaller than the first groove portion.

When the pull tab is in the upright state, the cam is in contact with the locking pin body portion. Provisions. However, in order to stabilize the erected state of the pull tab, it is desirable to set it as follows.

That is, the cam and the lock pin main portion respectively have flat portions that face each other when the pull tab is in the upright state.

According to the slider of the present invention, when the pull tab is in the upright state, the end faces of the axial sides of the arms are in contact with each other before the first groove portion, and the pull tabs are prevented from falling toward the front side and the rear side. Therefore, the erected state of the pull tab is stable.

Further, the center point L, which is the center of the front and rear widths of the pair of first groove portions, is located immediately below the center line passing through the center of each of the pair of shaft holes, and the pair of first groove portions. When the center of the width is offset from the center line of the pair of shaft holes, the end face of each arm is more stable after the first groove portion. Contact, and the pull-up is stable.

Further, according to the case where the pair of contact portions are the second recessed portion which is recessed on the upper surface of the upper blade and is shallower than the first groove portion, the end of the axial side of each arm when the pull tab is in the upright state The surface is housed in the second groove portion, and the erected state of the pull tab is more stable.

Further, according to the case where the cam and the lock pin main portion respectively have a flat portion in which the flat portions are in surface contact when the pull tab is in the upright state, when the pull tab is in the upright state, the returning force of the lock pin main portion is perpendicular to each arm The ground is applied to the upper wing, and the upright state of the pull tab is more stable.

1‧‧‧Sliding parts

2‧‧‧ Subject

2a‧‧‧Upper wing

2a1‧‧‧keeping slot

2a2‧‧‧1st groove

2a3‧‧‧2nd groove

2a4‧‧‧Front groove (contact)

2a5‧‧‧ rear groove (contact)

2a6‧‧‧ bottom part

2a7‧‧‧Bevel

2a8‧‧‧ bottom part

2a9‧‧‧Bevel

2b‧‧‧lower wing

2c‧‧‧ Linked Column

2d‧‧‧Flange

2e‧‧‧ pull tab mounting post

2e1‧‧‧ front pillar

2e2‧‧‧ rear column

2e3‧‧‧Axis containment department

2e4‧‧‧ shaft hole

2f‧‧‧ Uplift

2g‧‧‧ compression department

2h‧‧‧Protruding

2s‧‧‧ accommodating groove

2t‧‧‧ claw hole

3‧‧‧ Pulling

3a‧‧‧ grasping part

3b‧‧‧Axis

3c‧‧‧arm

3c1‧‧‧Surface

3c2‧‧‧Flat Department

3d‧‧‧ cam

3d1‧‧‧ end face of the cam (planar part)

3e‧‧‧ convex

3f‧‧‧through hole

4‧‧‧Lock pin

4a‧‧‧Lock pin body

4b‧‧‧Cap

4b1‧‧‧Central Film

4b2‧‧‧Front film

4b3‧‧‧After

4b11‧‧‧The middle part of the central piece (planar part)

4c‧‧‧Installation Department

4d‧‧‧ claw

21‧‧‧Sprocket guide

22‧‧‧Chain groove

C0‧‧‧ Center (shaft housing department)

C1‧‧ Center

L‧‧‧ center point (1st groove)

L0‧‧‧ Straight line

L1‧‧‧ center line

R1‧‧‧ diameter

T1‧‧‧Deep dimension of the first groove

t2‧‧‧Deep dimension of the second groove

W1‧‧‧Maximum size of the front and rear width of the front end of the arm

Fig. 1 is an exploded perspective view showing a state of a slider according to a first embodiment of the present invention before assembly.

Fig. 2 is a perspective view showing the slider of the first embodiment.

Fig. 3 is a plan view showing the slider of the first embodiment.

Figure 4 is a plan view showing the main body of the slider before the tab is attached.

Figure 5 is a view showing the shape of the slider of the first embodiment before assembly from the right direction. A cross-sectional view of the state.

Figure 6 is a cross-sectional view taken along line VI-VI of Figure 3.

Figure 7 is a cross-sectional view taken along line VII-VII of Figure 3.

Figure 8 is a cross-sectional view taken along line VIII-VIII of Figure 3.

Figure 9 is a cross-sectional view showing the relationship between the cam and the locking pin when the tab is in an inclined state.

Figure 10 is a cross-sectional view showing the relationship between the tab and the upper blade when the tab is in an inclined state.

Figure 11 is a cross-sectional view showing the state of the lock pin when the pull tab is in the upright state.

Figure 12 is a cross-sectional view showing the relationship between the tab and the upper blade when the tab is in the upright state.

Fig. 13 is an enlarged cross-sectional view showing an example of the relationship between the tab and the upper blade when the tab is in the upright state.

The zipper is provided with: a pair of zipper chain belts having a pair of sprocket rows on opposite side edges of the pair of chain fabrics; and a slider moving along a pair of sprocket rows; and forming a pair of sprocket rows The plurality of sprocket teeth are engaged or disengaged by the movement of the slider.

The directions used in the following description are based on Figure 3. The moving direction of the slider 1 is referred to as the front-rear direction, which is the upper-lower direction of FIG. The front direction refers to the direction in which the fastener elements are meshed in the moving direction of the slider 1, and is the upward direction of FIG. The rear direction refers to a direction in which the fastener elements are separated in the moving direction of the slider 1, and is a downward direction in FIG. The width direction of the slider 1 is referred to as the left-right direction, and is the direction in which the pair of fastener elements are opposed to each other in the slider 1. The left direction refers to the left direction of FIG. 3, and the right direction refers to the right direction of FIG. The height direction of the slider 1 is referred to as an up-and-down direction, and is a direction orthogonal to the plane of the paper of FIG. In addition, the upper direction means the front direction in the direction orthogonal to the paper surface of FIG. 3, and the downward direction means the depth direction in the direction orthogonal to the paper surface of FIG.

As shown in FIGS. 1 to 3, the slider 1 according to the first embodiment of the present invention includes a main body 2 having a sprocket guide path 21 therein, and a pull tab 3 slidably coupled to the main body 2; The pin 4 has a claw 4d that enters the element guide path 21 and is attached to the body 2. The main body 2, the pull tab 3, and the lock pin 4 are not required to be materials, but are preferably made of a metal material such as an aluminum alloy, a zinc alloy, or a copper alloy. More preferably, the main body 2 and the pull tab 3 are die-cast molded articles, and the lock pin 4 is a press-molded product.

The pull tab 3 includes a grip portion 3a that is gripped by a finger, a shaft 3b that extends in the left-right direction at a position spaced apart from the grip portion 3a, and a pair of arms 3c that engage the left and right end portions of the shaft 3b with the grip portion 3a. 3c, a cam 3d that protrudes outward in the radial direction of the shaft 3b from the intermediate portion in the left-right direction of the shaft 3b, and a convex portion 3e that protrudes from the end surface on the side of the shaft 3b of each arm 3c. Further, the pull tab 3 has a rectangular plate shape as a whole, and a through hole 3f penetrating in the thickness direction is formed in the vicinity of one side.

The cam 3d protrudes from the shaft 3b toward the gripping portion 3a, and the end surface 3d1 is a flat portion 3d1 which is a horizontal plane when the tab 3 is in the standing state as shown in Figs.

As shown in Figs. 7 and 12, each of the arms 3c is linearly elongated in the radial direction of the shaft 3b when viewed in the width direction. More specifically, when viewed in the width direction, each arm 3c is extended from the grip portion 3a toward the shaft 3b, and its front end portion is extended to be farther from the grip portion 3a than the shaft 3b. Moreover, the end surface which is the end surface of the front end of each arm 3c is the end surface opposite to the grip part 3a, and is the lower surface when the handle 3 is set to the upright state. Further, when the pull tab 3 is in the standing state, when the end faces of the respective arms 3c are viewed in the width direction, the front and rear end portions (both corner portions) are formed to protrude in an arc shape toward the respective ends. The pair of curved surface portions 3c1 and 3c1 that have been raised in this manner are the front and rear intermediate portions of the end surface as the flat portion 3c2. The flat portion 3c2 is a surface that is substantially orthogonal to the direction in which the arm 3c extends when viewed in the width direction, and becomes a horizontal plane when the tab 3 is in the upright state. A convex portion 3e is formed to protrude from the intermediate portion in the front-rear direction and the intermediate portion in the width direction of the flat portion 3c2.

Further, as shown in Fig. 12, the convex portion 3e is convex in a semicircular shape when viewed in the width direction. The shape.

The main body 2 has the following parts as a main part: an upper wing 2a; a lower wing 2b which is spaced apart from below the upper wing 2a; and a connecting post 2c which connects the upper wing 2a and the lower wing 2b to each other The front end portion and the intermediate portion in the width direction are vertically connected; the pair of flanges 2d and 2d are in the width direction of at least one of the upper blade 2a and the lower blade 2b (both in the illustrated example). The both end portions protrude in a direction in which the upper and lower intervals are narrowed; and a pair of tab mounting posts 2e, 2e which are equal to the upper surface of the upper blade 2a and the intermediate portion in the width direction rises in a state in which the left and right are spaced apart from each other . Further, the main body 2 includes a pair of raised portions 2f and 2f in addition to the upper blade 2a, the lower blade 2b, the connecting post 2c, the flanges 2d, 2d, and the like, and the like. And a pair of the tab mounting posts 2e, 2e are further on the front side and are more outwardly widened than the locking pin 4 in the width direction; a pair of pressing portions 2g, 2g which are equal to the upper surface of the upper flap 2a and a pair of ridges The portions 2f, 2f are further covered on the front side by the two sides from the width direction to cover the locking pin 4 from above; and a pair of protruding portions 2h, 2h which are equal to the rear portion of the upper surface of the upper wing 2a and the rear side The pull tab 3 of the state is in contact.

Further, the main body 2 includes, as its internal space, a fastener guide path 21 through which a pair of fastener elements pass, and a chain groove 22 through which the fastener passes.

The element guide path 21 is partitioned from the upper blade 2a and the lower blade 2b in the upper and lower directions, and the intermediate portion in the width direction of the front side is partitioned by the connecting post 2c, and is inserted in the front-rear direction and the front side is branched into two branches. The shape, in other words, is Y-shaped.

Further, each of the chain grooves 22 is formed in the illustrated example, and the end portions of the upper blade 2a and the lower blade 2b in the width direction are separated by the upper and lower flanges 2d and 2d, and the inner sides in the width direction are connected. The element guide path 21 is opened to the outside in the width direction.

As shown in Fig. 2, each of the tab mounting posts 2e includes a post 2e1 and a rear post 2e2 before being protruded from the upper surface of the upper flap 2a in a state of being opposed to each other. The front pillar 2e1 and the rear pillar 2e2 are separated as shown in Figs. 1 and 5 at a stage before the pull tab 3 is mounted, and are separated back and forth at a portion other than the lower end portions of each other, and are continuous at the lower end portions of each other, and the continuous portion thereof is continuous. The upper surface is set to be wide It is arc-shaped when viewed in the direction of the direction. Therefore, the front pillar 2e1 and the rear pillar 2e2 are attached to the shaft accommodating portion 2e3 which is recessed in a U shape when viewed in the width direction, before the attachment of the pull tab 3. Further, as shown in FIG. 7, the front pillar 2e1 and the rear pillar 2e2 are formed to have the shaft hole 2e4 by deforming the upper portions thereof in the front-rear direction at the stage after the tabs 3 are attached.

As shown in Fig. 7, each of the shaft holes 2e4 has a substantially circular shape when viewed in the width direction, and its diameter (front and rear width) R1 is as shown in Fig. 11, which is not only slightly longer than the diameter of the shaft 3b, but also slightly longer than the standing state. The maximum dimension W1 of the front and rear widths of the front end of each arm 3c. Further, each of the shaft holes 2e4 penetrates the corresponding tab mounting post 2e in the left-right direction. Further, as shown in FIG. 3, the pair of shaft holes 2e4 and 2e4 are opposed to each other, and the center lines C1 and C1 of the respective axes are aligned in the left-right direction, and the center lines of the linear shaft holes 2e4 connecting the centers C1 and C1 of each other are connected. L1. Further, the shaft accommodating portion 2e3 has an arc shape when viewed from the lower side in the width direction. Therefore, as shown in Fig. 4, the center C0 of the arc is present. Further, the straight line L0 connecting the centers C0 and C0 of the pair of shaft housing portions 2e3 and 2e3 coincides with the center line L1 of the shaft hole 2e4.

As shown in FIG. 4, the upper blade 2a has one of the holding grooves 2a1 and 2a1 in the upright state in which the pull tab 3 is held on the upper surface and on the outer side in the width direction of the pair of pull tab mounting posts 2e and 2e. Incidentally, in the upper surface of the upper blade 2a, the pair of the tab mounting posts 2e and 2e are disposed on the outer side in the width direction, and the portions other than the pair of holding grooves 2a1 and 2a1 are set as a horizontal plane.

As shown in FIGS. 4, 12, and 13, the pair of holding grooves 2a1 and 2a1 are one of the outer sides in the width direction (left-right direction) of the pair of shaft holes 2e4 and 2e4, in other words, the pull-tab 3 is in the standing state. The arms 3c, 3c are exactly recessed just below. Each of the holding grooves 2a1 is provided with a first groove portion 2a2 which is recessed right below the center line L1 of the shaft hole 2e4, and has a depth dimension from the upper surface (horizontal plane) of the upper blade 2a as t1; The groove portion 2a3 is recessed before and after the first groove portion 2a2, and has a depth dimension from the upper surface (horizontal plane) of the upper blade 2a to t2.

The first groove portion 2a2 is a portion that accommodates the convex portion 3e of the arm 3c on the corresponding side when the tab 3 is in the upright state, and is recessed deeper than the second groove portion 2a3, and is formed as viewed in the width direction. Arc shape. The relationship between the depth dimensions becomes t2 < t1. Further, as shown in FIG. 13, the center point L which is the center of the front and rear widths of each of the first groove portions 2a2 is located directly below the center line L1 passing through the centers C1 and C1 of the pair of shaft holes 2e4 and 2e4.

The second groove portion 2a3 is formed so as to be shallower than the first groove portion 2a2 when the end surface of the arm 3c on the corresponding side is in contact with the convex portion 3e before the tab 3 is in the upright state. More specifically, the second groove portion 2a3 includes a groove portion 2a4 on the front side of the first groove portion 2a2 and a groove portion 2a5 on the rear side. The front groove portion 2a4 and the rear groove portion 2a5 are a pair of contact portions.

Further, as shown in Fig. 12, when the pull tab 3 is in the upright state, the convex portion 3e of the arm 3c on the corresponding side is in contact with the first groove portion 2a2, and the end surface of the arm 3c on the corresponding side is opposite to the convex portion. 3e is in contact with the second groove portion 2a3 (front groove portion 2a4, rear groove portion 2a5) before and after. In other words, each of the holding grooves 2a1 is in a state in which the three portions are in contact with the end faces of the arms 3c on the corresponding sides.

Further, in the example of Fig. 13, the front groove portion 2a4 includes a bottom surface portion 2a6 which is horizontally extended from the first groove portion 2a2 toward the front, and a slope portion 2a7 which gradually becomes higher toward the front from the front end portion of the bottom surface portion 2a6. . The rear groove portion 2a5 includes a bottom surface portion 2a8 that is symmetrical with respect to the front groove portion 2a4 and that extends horizontally rearward from the first groove portion 2a2, and a slope portion 2a9 that gradually faces from the rear end portion of the bottom surface portion 2a8 toward the rear. Becomes high. When the pull tab 3 is in the upright state, each of the holding grooves 2a1 is in contact with the convex portion 3e in the first groove portion 2a2, and is in contact with the arm 3c before and after the second groove portion 2a3 (the front groove portion 2a4 and the rear groove portion 2a5). The rear end portion (both corners) before the end face. More specifically, in this case, the shape of the first groove portion 2a2 is such that only the top (lower portion) of the convex portion 3e can be accommodated. Therefore, the front end of the convex portion 3e is in contact with the first groove portion 2a2, and the convex portion is formed. The root portion (upper portion) of 3e is exposed from the first groove portion 2a2. Therefore, the flat portion 3c2 of each arm 3c does not come into contact with the bottom surface portions 2a6, 2a8 before and after the second groove portion 2a3, and the curved surface portions 3c1, 3c1 before and after the respective arm portions 3c contact the oblique portion before and after the second groove portion 2a3. 2a7, 2a9.

Further, as shown in FIGS. 4 and 6, the upper blade 2a has a pair of holding grooves 2a1 and 2a1 on its upper surface, and a receiving groove portion 2s for accommodating the front portion of the locking pin 4, and is provided with a locking pin. 4 The claw 4d of the rear portion is inserted into the claw hole 2t.

The accommodating groove portion 2s is recessed in a stepped manner with respect to the upper surface of the upper blade 2a. Further, the accommodation groove portion 2s is formed in the intermediate portion, more specifically, between the pair of pressing portions 2g and 2g and between the pair of tab mounting posts 2e and 2e in the width direction. Further, the accommodating groove portion 2s is formed in a range between the pair of pressing portions 2g and 2g and between the pair of tab mounting posts 2e and 2e in the front-rear direction, and more specifically, the front end of the accommodating groove portion 2s. It is located at substantially the same position as the front end of the pressing portion 2g, and the rear end of the receiving groove portion 2s is located further forward than the shaft hole 2e4. Further, the accommodation groove portion 2s is recessed deeper from the front end portion with respect to the rear end portion from the front and rear intermediate portions thereof.

The claw hole 2t is formed to penetrate vertically above the upper blade 2a, and is formed between the pair of handle mounting posts 2e, 2e in the width direction, more specifically, between the pair of rear pillars 2e2, 2e2, and in the front-rear direction The upper surface is formed behind the accommodating groove portion 2s and is closer to the rear side than the shaft hole 2e4.

The pair of protruding portions 2h, 2h are formed at intervals behind the upper surface of the upper blade 2a at intervals in the width direction, and contact the lower surfaces of the pair of arms 3c, 3c when the tab 3 is in a state of falling toward the rear side .

Each of the raised portions 2f is protruded upward from the reference surface of the upper blade 2a so that the lock pin 4 is not visible from the width direction before and after the tab attachment post 2e and the pressing portion 2g.

The pair of pressing portions 2g and 2g are attached to the locking pin 4 from the intermediate portion in the width direction of the upper surface of the upper blade 2a so as to face upward from the left and right intervals. At the subsequent stage, the inner side in the width direction is pressed toward the front end of each other, and the end portion of the lock pin 4 opposite to the claw 4d is restricted from moving upward.

As shown in FIGS. 1, 5, and 6, the lock pin 4 is a plate of a specific shape that is elastically deformable, and is attached to the upper surface of the upper blade 2a and collides with the cam 3d when the pull tab 3 is in the upright state. The lock pin main body portion 4a and the claws 4d extending downward from one end of the cam 3d side of the lock pin main body portion 4a in a state where the pull tab 3 is laid down toward the rear side.

The lock pin main body portion 4a includes a cover portion 4b that covers the upper side and the front and rear of the shaft 3b at a position of the cam 3d, and a mounting portion 4c that extends forward from the front lower end portion of the cover portion 4b and It is attached to the receiving groove portion 2s of the upper blade 2a.

The attachment portion 4c is elongated in the front-rear direction and has a shape in which the front end portion is bent downward.

The lid portion 4b is U-shaped downwardly open, and includes a center piece 4b1 extending forward and backward, a front piece 4b2 extending downward from a front end of the center piece 4b1, and a rear piece 4b3 extending from the center piece 4b1 The end is extended downward. In the lid portion 4b, the lower surface of the intermediate portion 4b11 in the front-rear direction of the center piece 4b1 is a flat portion 4b11 which is in surface contact with the end surface 3d1 of the cam 3d when the tab 3 is in the standing state. Further, the lower end of the rear side of the lid portion 4b (the lower end of the rear sheet 4b3) becomes a continuous portion with the claw 4d.

The claw 4d is extended from the rear end of the sheet 4b3 from the lid portion 4b toward the lower side.

The slider 1 of the above-described first embodiment is as follows when the tab 3 is in a state of being laid down toward the rear side. As shown in Fig. 6, the cam 3d is separated from the cover portion 4b of the lock pin 4, and the claw 4d protrudes from the claw hole 2t to the element guide path 21, and the front end of the claw 4d will be one of a pair of fastener element rows not shown. The side sprocket is pressed in while being held such that the slider 1 does not move relative to the pair of sprocket rows. Further, as shown in Fig. 7, the shaft 3b is rotatably supported by the shaft holes 2e4, 2e4 of the pair of tab mounting posts 2e, 2e, and a part of the lower surface of the pair of arms 3c, 3c is formed by a pair of projections. 2h, 2h support. Further, as shown in Fig. 8, the pair of arms 3c, 3c are not in contact with the upper surface of the upper blade 2a at portions other than the pair of protruding portions 2h, 2h.

Moreover, the slider 1 of the first embodiment is as follows when the tab 3 is inclined obliquely rearward. As shown in Fig. 9, the cam 3d collides with the lid portion 4b, and pushes the lid portion 4b slightly upward. Thereby, the lock pin 4 is elastically deformed, and the force of pressing the shaft 3b downward is generated on the shaft 3b by the returning force of the lock pin 4. Further, as shown in FIG. 10, the rear end portion (the curved surface portion 3c1) of the end surface of the arm 3b on the side of the shaft 3b is pressed against the first groove portion 2a2. At this time, the pull tab 3 comes into contact with the upper blade 2a at two points by the pair of arms 3c and 3c, and the returning force of the lock pin 4 acts to be in a state of falling toward the rear side. In addition, if it is assumed that the first groove portion 2a2 and the curved surface portion 3c1 are not present, the rear end portions of the respective arms 3c become right angles when viewed in the width direction. Therefore, during the transition from the state in which the pull tab 3 has fallen rearward to the standing state, the upper surface of the upper blade 2a is rubbed with a strong force. However, since the slider 1 of the first embodiment has the first groove portion 2a2 and the curved surface portion 3c1, it is lighter during the transition period than when the first groove portion 2a2 and the curved surface portion 3c1 are not present. The force rubs against the corner portion on the rear side of each arm 3c and the upper surface of the upper blade 2a, and when the pull tab 3 is brought to the standing state from the state of falling backward, the slider 3 can be rotated with a light force. Further, for the same reason, when the pull tab 3 is changed from the state of being pulled forward to the standing state, the handle 3 can be rotated with a light force. Further, in a state where the pull tab 3 is laid down toward the front, the arms 3c are placed on the raised portion 2f, and the pull tab 3 is not in contact with the mounting portion 4c of the lock pin 4.

Moreover, the slider 1 of the first embodiment is as follows when the tab 3 is in the standing state. As shown in Fig. 11, the cam 3d pushes up the lid portion 4b upward, and the claw 4d does not protrude to the element guide path 21, but is accommodated in the claw hole 2t, and is separated from the pair of element rows. At this time, the end surface 3d1 (planar portion) of the cam 3d is in surface contact with the flat portion 4b11 of the center piece 4b1 of the lid portion 4b. Therefore, the returning force of the lock pin 4 becomes a downward force and is transmitted to the cam 3d. Further, the downward force is applied perpendicularly from the arms 3c to the upper blade 2a via the cam 3d and the shaft 3b, and the upright state of the tab 3 is stabilized.

Further, as shown in FIG. 12, the front end portion of the arm 3c is accommodated in the holding groove 2a1, in other words, the front end portion of each arm 3c enters the first and second groove portions 2a2, 2a3, and the upright state of the pull tab 3 is stabilized. Further, the convex portion 3e of the arm 3c is in contact with the first groove portion 2a2, and the end surface of the arm 3c is in contact with the front groove portion 2a4 and the rear groove portion 2a5 before and after the convex portion 3e. In other words, the end surface of the arm 3c on the corresponding side is in contact with each of the holding grooves 2a1 at three locations. In other words, when the convex portion 3e does not completely enter the first groove portion 2a2, the end surface of the arm 3c is in contact with the first groove portion 2a2. Incidentally, in the case where the tab 3 of the convex portion 3e is not present or the protruding length of the convex portion 3e is shorter than the illustrated example, the end surface of the arm 3c is two positions before the first groove portion 2a2. It is in contact with each of the holding grooves 2a1. Since the end faces of the arms 3c are in contact with the respective retaining grooves 2a1 at at least two locations, the tabs 3 can be prevented. The front side and the rear side are tilted, and the pull tab 3 is in a stable state.

Further, since the center point L, which is the center of the front and rear widths of the pair of first groove portions 2a2, 2a2, is located directly below the center line L1 passing through the centers C1, C1 of the pair of shaft holes 2e4, 2e4, and the center point L When the pull tab 3 is in the upright state, the end face of each arm 3c is stably contacted before and after the first groove portion 2a2, as compared with the case where the center line L1 of the pair of the shaft holes 2e4, 2e4 is directly deviated. The upright state of the pull tab 3 is stable.

The present invention is not limited to the above-described embodiments, and can be appropriately modified without departing from the spirit and scope of the invention. For example, in the present embodiment, the arm 3c is a configuration of the required convex portion 3e. However, the present invention is not limited thereto, and in the present invention, the convex portion 3e may not be formed. Further, in the present embodiment, the upper blade 2a is a configuration in which the second groove portion 2a3 is required. However, the present invention is not limited thereto. In the present invention, the second groove portion 2a3 may not be formed. At the same time, the end faces of the arms 3c are brought into contact with the upper surface of the upper blade 2a before and after the first groove portion 2a2. Further, in the present embodiment, one of the upper surfaces of the upper blade 2a is formed in a plane other than the holding groove 2a1 in the width direction of the handle mounting posts 2e and 2e, but the present invention is not limited thereto. In the present invention, for example, a surface having irregularities may be used.

1‧‧‧Sliding parts

2‧‧‧ Subject

2a‧‧‧Upper wing

2a1‧‧‧keeping slot

2a2‧‧‧1st groove

2a3‧‧‧2nd groove

2a4‧‧‧Front groove (contact)

2a5‧‧‧ rear groove (contact)

2b‧‧‧lower wing

2e4‧‧‧ shaft hole

2h‧‧‧Protruding

3‧‧‧ Pulling

3b‧‧‧Axis

3c‧‧‧arm

3c1‧‧‧Surface

3c2‧‧‧Flat Department

3e‧‧‧ convex

C1‧‧ Center

L1‧‧‧ center line

Claims (5)

A slider for a zipper, characterized by comprising: a main body (2) comprising upper and lower opposing upper and lower wings (2a) and (2b), said upper wing (2a) and said lower wing (2b) a connecting post (2c) connected to the front end of each of the upper and lower sides, and a pair of pull tab mounting posts (2e, 2e) on the upper surface of the upper flap (2a) in a state of being opposed to each other a pair of sprocket guiding paths (21) branched into two by the connecting post (2c) between the upper wing plate (2a) and the lower wing plate (2b), and formed on the pair of pulls a sheet mounting post (2e, 2e) and a pair of shaft holes (2e4, 2e4) extending to the left and right; a pull tab (3) including a grip portion (3a) rotatably supported by a pair of the above shaft holes (2e4) a shaft (3b) of 2e4), a cam (3d) projecting from the outer circumference of the shaft (3b), and a pair of arms (3c) for engaging the left and right end portions of the shaft (3b) with the grip portion (3a) And 3c); and a locking pin (4) comprising a locking pin body portion (4a) mounted on an upper surface of the upper blade (2a) and colliding with the cam (3d), and a locking pin body portion ( 4a) is the end opposite to the end attached to the upper wing plate (2a) a claw (4d) extending downward; and the upper blade (2a) is provided with a claw hole (2t) penetrating up and down and for feeding the claw (4d) into the element guide path (21); a first groove portion (2a2, 2a2) equal to an upper surface of the upper blade (2a) and recessed outward in a left-right direction with respect to a pair of the shaft holes (2e4, 2e4); and a pair of contact portions (2a4, 2a5) Is equal to the above-mentioned axis (3b) of each of the above-mentioned arms (3) in the above-mentioned pull-up state (3) of the upper surface of the upper blade (2a) and before and after each of the first groove portions (2a2) The end faces of the sides are in contact with each other; the pair of the first groove portions (2a2, 2a2) are located directly below the center line (L1) passing through the center of each of the pair of the above-mentioned shaft holes (2e4, 2e4). A slider for a zipper of claim 1, wherein a pair of said first groove portions (2a2, 2a2) are preceded The center point (L) of the rear width is located directly below the center line (L1) passing through the center of each of the pair of the above-mentioned shaft holes (2e4, 2e4). A slider for a zipper according to claim 1 or 2, wherein said pair of contact portions (2a4, 2a5) are attached to an upper surface of said upper blade (2a) and said first groove portion (2a2) is recessed before and after said The first groove portion (2a2) is a shallow second groove portion (2a3). The slide fastener of claim 2, wherein the cam (3d) and the lock pin main portion (4a) respectively have flat portions (3d1, 4b11) that face each other when the pull tab (3) is in an upright state. . The slide fastener of claim 3, wherein the cam (3d) and the lock pin main portion (4a) respectively have flat portions (3d1, 4b11) that face each other when the pull tab (3) is in an upright state. .