Slider for slide fasteners

Abstract

To provide a slider for a slide fastener, capable of reliably pushing back a control claw downward by the restoring force of a cover even when the control claw is displaced upward on a body, and capable of controlling the slider to be movable or immovable. [Solution] A slider (100) for a slide fastener includes a cover (4) in which an upper plate (41) and a side plate (43) cover a control claw (3) from above and from the sides, and which is attached to a front mounting post (15) and a rear mounting post (16) so as to be swingable up and down, and the upper plate (41) pushes the control claw (3) downward by the restoring force of a leaf spring (42) extending from the front end of the upper plate (41) along the front surface of the front mounting post (15). The upper surface of the control claw (3) rearward of the center in the fore-and-aft direction can come into contact with the upper plate (41).

Description

[Technical Field]

[0001] The present invention relates to a slider for a slide fastener. [Background technology]

[0002] As an example of a conventional slider equipped with a stopping function, Patent Document 1 discloses a slider S, as shown in Figures 7(a) and 7(b), which is composed of four parts: a body 10, a pull tab 20 for operating the body 10, a control claw 30 for controlling whether the body 10 can move or cannot move, and a cover 40 for covering a portion of the pull tab 20 and for attaching the pull tab to the body 10 so that it can rotate.

[0003] The cover 40 of the slider S has an upper wall 410 extending in the front-to-rear direction and a side wall 430 extending downward from the side end of the upper wall 410. The cover 40 also has a leaf spring 420 that generates a restoring force by elastic deformation that causes a part of the control pawl 30 to protrude into the body 10.

[0004] The cover 40 is attached to the body 10 so as to be able to swing up and down. More specifically, the cover 40 has the front portion of the side wall 430 as the center of swing, and the rear portion of the side wall 430 as a displacement portion that displaces (swings) up and down. When the pull tab 20 is operated and the rear portion of the cover 40 is displaced upward via the control claw 30, the leaf spring 420 of the cover 40 elastically deforms, generating a restoring force that pushes the rear portion of the cover 40 downward. When the pull tab 20 is released, the restoring force automatically displaces both the rear portion of the cover 40 and the control claw 30 downward, causing the control claw 30 to penetrate deep into the body, rendering the body immovable (stopped) relative to the pair of element rows. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] International Publication No. 2019 / 016900 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in the slider S described in Patent Document 1, when the pull tab 20 is operated, the rear of the control claw 30 is displaced upward, which causes the protrusion 330 formed at the front of the control claw 30 and inserted into the recess 150a of the body 10 to rotate within the recess 150a, which may cause the control claw 3 to get caught on the inner wall of the recess 150a.

[0007] If the control claw 30 gets caught on the inner wall of the recess 150a, even if the operator releases the pull tab 20, the restoring force of the cover 40 will not be able to push the control claw 30 back, and the function of immobilizing the slider S may not be performed.

[0008] The present invention was made in consideration of the above problems, and its purpose is to provide a slider for a slide fastener that can reliably push the control claw back downward by the restoring force of the cover even if the control claw is displaced upward on the body, and can control the slider to be movable or immovable. [Means for solving the problem]

[0009] The above object of the present invention is achieved by the following configuration. [1] A fuselage (1) having an element passage (1a) penetrating in the front-rear direction and a claw hole (11a) leading upward to the element passage (1a) formed therein, wherein a front mounting post (15) and a rear mounting post (16) protrude from the upper surface of an upper blade (11) covering the upper part of the element passage (1a); a pull tab (2) that is rotatable in the front-rear direction and has a shaft portion (21) that serves as the center of rotation and is disposed on the upper blade (11); a control claw (3) that is placed on the shaft (21) between the front mounting post (15) and the rear mounting post (16) and controls the body (1) so that it can move or cannot move, the control claw (3) controlling the movement of the body (1) by changing the protrusion length of the claw portion (32) that protrudes from the claw hole (11a) into the element path (1a) depending on the vertical position of the shaft (21); a cover (4) in which an upper plate portion (41) and a side plate portion (43) cover the control pawl (3) from above and from the sides, and which is attached to the front mounting column (15) and the rear mounting column (16) so as to be swingable in the up and down direction, and the upper plate portion (41) presses the control pawl (3) downward by the restoring force of a leaf spring portion (42) extending from the front end of the upper plate portion (41) along the front surface of the front mounting column (15); The control claw (3) has an upper surface rearward of the center in the front-rear direction of the control claw (3) that can come into contact with the upper plate portion (41). A slider (100) for a slide fastener, characterized by: [Effects of the Invention]

[0010] According to this invention, even if the control claw is displaced upward on the body, the restoring force of the cover can reliably push the control claw back downward, thereby providing a slider for a slide fastener that can be controlled to move or not move. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a perspective view showing an exploded state of a slider for a slide fastener according to a first embodiment. [Figure 2] FIG. 2 is a perspective view showing the assembled state of the slider for the slide fastener according to the first embodiment. [Figure 3] FIG. 3 is a cross-sectional view of the slider for the slide fastener according to the first embodiment. [Figure 4] FIG. 4 is a cross-sectional view of the slider for a slide fastener according to the first embodiment in a state where the pull tab is rotated. [Figure 5]FIG. 5 is a cross-sectional view of a slider for a slide fastener according to the second embodiment. [Figure 6] FIG. 6 is a cross-sectional view of the slider for a slide fastener according to the second embodiment in a state where the pull tab is pulled. [Figure 7] Figure 7(a) is a cross-sectional view of a slider for a slide fastener according to a conventional example, and Figure 7(b) is a cross-sectional view of a slider for a slide fastener according to a conventional example. DETAILED DESCRIPTION OF THE INVENTION

[0012] (First embodiment) Fig. 1 is a perspective view showing a disassembled state of the slide fastener slider according to the first embodiment. Fig. 2 is a perspective view showing an assembled state of the slide fastener slider according to the first embodiment. Fig. 3 is a cross-sectional view of the slide fastener slider according to the first embodiment. Fig. 4 is a cross-sectional view of the slide fastener slider according to the first embodiment with the pull tab rotated.

[0013] The slider 100 for a slide fastener according to this embodiment is provided to open and close a pair of fastener stringers (not shown). The fastener stringers include an element row and a fastener tape, and the element row is inserted into an element path 1a in the body 1 of the slider 100 (described below). Hereinafter, the slider 100 for a slide fastener will be referred to as the slider 100.

[0014] The slider 100 comprises a body 1, a pull tab 2 that is disposed on the body 1 and is rotatable back and forth, a control claw 3 that is placed on the body 1 and controls the body 1 so that it can move or not move depending on the state of the pull tab 2, and a cover 4 that covers the control claw 3 and connects the pull tab 2 and control claw 3 to the body 1, the cover 4 being rotatable up and down. Hereinafter, the rotation of the pull tab 2 refers to the movement of the pull tab 2 when it is operated to rotate back and forth when opening and closing a pair of fastener stringers using the slider 100. Hereinafter, each part will be described based on the slider 100 in a state in which the control claw 3 controls the body 1 so that it cannot move.

[0015] Hereinafter, the movement direction of the slider 100 when opening and closing the fastener stringer will be referred to as the front-to-rear direction. The front-to-rear direction is the direction indicated by the double-headed arrow FB in each drawing, and the forward direction is the direction indicated by the arrow F in each drawing. The rearward direction is the direction indicated by the arrow B in each drawing. The direction perpendicular to the front-to-rear direction will be referred to as the left-to-right direction or the width direction of the slider 100. The left-to-right direction is the direction indicated by the double-headed arrow LR in each drawing, and is the direction in which a pair of fastener stringers face each other. With respect to the left-to-right direction, the left is the direction indicated by the arrow L in each drawing. The right is the direction indicated by the arrow R in each drawing. The direction perpendicular to both the front-to-rear direction and the left-to-right direction will be referred to as the up-to-down direction. The up-to-down direction is the direction indicated by the double-headed arrow UD in each drawing, and the upward direction is the direction indicated by the arrow U in each drawing. The downward direction is the direction indicated by the arrow D in each drawing. Note that the up-to-down direction does not necessarily mean the vertical direction (the direction of gravity). For example, when the longitudinal direction of the slide fastener is arranged in the vertical direction, the up-down direction with respect to the slider 100 is included in the horizontal direction (perpendicular to the vertical direction). The directions referred to in this specification are unrelated to the vertical direction.

[0016] As shown in Figure 1, pull tab 2 extends radially when rotated, and has a shaft 21 at one radial end that serves as the center of rotation, and a grip 22 at the other radial end for gripping pull tab 2. More specifically, pull tab 2 has a through hole 23 on one radial side through which cover 4 passes. The portion on the other radial side of through hole 23 is grip 22, and the portion of the frame that forms through hole 23 that faces grip 22 in the radial direction is shaft 21. Shaft 21 is disposed on body 1, and control pawl 3 is disposed on shaft 21.

[0017] The shaft 21 according to this embodiment includes a cam 24 that cooperates with the control pawl 3. The cam 24 protrudes from the outer circumferential surface of the shaft 21 toward the knob 22. By rotating the pull tab 2 forward on the body 1, the control pawl 3 is displaced upward, rendering the body 1 movable. Furthermore, by tilting the pull tab 2 backward, the rotation of the cam 24 displaces the control pawl 3 downward, rendering the body 1 immovable. Thus, the slider 100 according to this embodiment is a slider with a so-called semi-automatic stop function. The cam 24 is formed so that its left-right position is offset from that of the inner plate 17 (described later) so as not to interfere with the inner plate 17 when the pull tab 2 rotates.

[0018] The control claw 3 includes a base 31 that extends forward and backward above the shaft 21 and is pushed up by the cam portion 24 of the shaft 21, a claw portion 32 that extends downward from the rear of the base 31, and a protrusion 33 that extends downward from the front of the base 31.

[0019] The cover 4 includes an upper plate portion 41 facing the upper surface of the body 1, a leaf spring portion 42 extending downward from the front end of the upper plate portion 41, and a pair of side plate portions 43, 43 extending downward from the left and right side ends of the upper plate portion 41. The cover 4 is formed by bending a metal plate using a press process. The thickness of the cover 4 (side plate portions 43) is thinner than the thickness of the control claw 3 in the left-right direction. Details of the cover 4 will be explained later.

[0020] The body 1 is for engaging and separating the elements. As shown in Figures 1 to 3, the body 1 has element passages 1a that penetrate in the front and rear directions as a space portion and through which a pair of element rows pass on its front and rear surfaces, and tape grooves 1b that penetrate in the front and rear directions and through which a pair of fastener tapes pass on its left and right side surfaces. The front of the element path 1a is a space partitioned into left and right. In other words, the front of the element path 1a consists of two branching paths, one to the left and one to the right, and the rear of the element path 1a consists of two branching paths that join together to form a single path leading rearward.

[0021] In order to form the element path 1a and the tape groove 1b, the fuselage 1 is provided with an upper blade 11 that covers the upper part of the element path 1a, a lower blade 12 that faces the upper blade 11 at a distance below and covers the lower part of the element path 1a, flanges 13, 13 that protrude upward or downward to narrow the vertical gap between the upper blade 11 and the lower blade 12 and protrude from the left and right ends of at least one of the upper blade 11 and the lower blade 12 (in the illustrated example, four flanges 13, ... protruding from both the left and right ends), a pillar 14 that connects the upper blade 11 and the lower blade 12 at the front and middle part in the left-right direction, and front mounting pillars 15 and rear mounting pillars 16 that protrude upward from the front and rear of the upper surface of the upper blade 11 at the middle part in the left-right direction and to which the cover 4 is attached.

[0022] The upper blade 11 and the lower blade 12 are plates whose thickness direction is the vertical direction. The upper blade 11 has a claw hole 11a between the front mounting post 15 and the rear mounting post 16 and located near the rear mounting post 16, for inserting the claw portion 32 into the element path 1a. The claw hole 11a penetrates the upper blade 11 in the vertical direction, which is its thickness direction. The upper blade 11 also has a mounting portion 11b between the front mounting post 15 and the rear mounting post 16 and adjacent to the claw hole 11a at the rear, on which the mounting portion 31b of the base 31 of the control claw 3 is placed. The mounting portion 11b is recessed around its periphery in a stepped shape compared to the area other than the claw hole 11a. When the mounting portion 31b of the base 31 is placed on the mounting portion 11b, the claw portion 32 protrudes from the claw hole 11a into the element path 1a. Therefore, the recessed state (vertical position) of the placement portion 11b determines the maximum length of the claw portion 32 that protrudes from the claw hole 11a into the element path 1a.

[0023] In addition to the upper wing 11, lower wing 12, flange 13, columns 14, front mounting column 15, and rear mounting column 16, the fuselage 1 also includes an inner plate 17 (see FIG. 1) that protrudes from the top surface of the upper wing 11 between the front mounting column 15 and the rear mounting column 16 and forward of the rear mounting column 16. More specifically, the inner plate 17 protrudes forward from the rear mounting column 16 to the side of the claw hole 11a and the mounting portion 11b, and is positioned inside the pair of side plate portions 43, 43 of the cover 4, along one of the side plate portions 43. The top surface of the inner plate 17 is inclined so that it approaches the top surface of the upper wing 11 as it moves forward.

[0024] The body 1 positions the control claw 3 between the front mounting column 15 and the rear mounting column 16 in the front-to-back and left-to-right directions and accommodates it so that it can swing up and down. The body 1 has a recess 15a formed in the front of the body 1. The recess 15a fits vertically with the protrusion 33 of the control claw 3, thereby positioning the front of the control claw 3 as the center of its swing. The swing recess 15a is formed in the middle part of the top surface of the front mounting column 15 in the left-to-right direction and has a shape that is concave downward.

[0025] The body 1 accommodates the leaf spring portion 42 by positioning it front to back and left to right along the front surface of the front mounting column 15. To this end, the body 1 and the leaf spring portion 42 have the following configuration. The leaf spring portion 42 includes a first spring piece 42a extending forward from the front end of the upper plate portion 41, and a second spring piece 42b extending downward from the front end of the first spring piece 42a. The front mounting pillar 15 of the body 1 includes a recess 15b for the leaf spring portion 42 in its middle portion in the left-right direction, extending from the top surface to the front surface.

[0026] The cover 4 is attached to the body 1 so as to be swingable as follows. As shown in Figures 1 and 2, the side plate portion 43 of the cover 4 includes a side plate main body portion 43a extending downward from the left and right side ends of the upper plate portion 41, a front protruding piece portion 43b protruding forward from the lower part of the side plate main body portion 43a, and a rear protruding piece portion 43c protruding rearward from the side plate main body portion 43a. The front protruding piece 43b serves as the center when the cover 4 swings, and the rear protruding piece 43c serves as a displacement portion when the cover 4 swings. Therefore, the front portion of the side plate portion 43 serves as the center of swing, and the rear portion of the side plate portion 43 serves as a displacement portion that displaces up and down due to swing. Furthermore, when the rear portion of the cover 4 is displaced upward, the leaf spring portion 42 elastically deforms and bends, generating a large restoring force that pushes the rear portion of the cover 4 downward together with the control pawl 3. The laterally facing portions of the pair of side panel main bodies 43a, 43a each have a through-hole 43d that penetrates from left to right and opens downward. This through-hole 43d is a hole through which the shaft 21 of the pull tab 2 passes and which supports the pull tab 2 rotatably. The fuselage 1 is provided with front storage sections 15e at the lower left and right side surfaces of the front mounting pillar 15, which store the left and right front protruding pieces 43b so that they cannot be displaced up and down, and with rear storage sections 16e at the lower left and right side surfaces of the rear mounting pillar 16, which store the rear protruding pieces 43c so that they can be displaced up and down. The front storage section 15e is recessed in the side surface of the front mounting pillar 15 and opens rearward. The vertical dimension of the front storage section 15e is slightly longer than the vertical dimension of the front protruding piece 43b. The portion of the side surface of the front mounting pillar 15 above the front storage section 15e is a front protruding section 15f that protrudes in a stepped manner from the front storage section 15e. The front protruding section 15f prevents the front protruding piece 43b stored in the front storage section 15e from displacing upward. The rear storage section 16e is recessed in the side surface of the rear mounting pillar 16 and opens forward. The vertical dimension of the rear storage section 16e is sufficiently longer than the vertical dimension of the rear protruding piece 43c. The portion of the side surface of the rear mounting pillar 16 above the rear storage section 16e is a rear protruding section 16f that protrudes in a stepped manner from the rear storage section 16e. The rear protruding section 16f determines the upper limit position of the movement range of the rear protruding piece 43c, which can be displaced in the vertical direction.

[0027] The shape of the control claw 3 according to this embodiment will be described in detail below, as shown in Figures 1 and 3. As described above, the control claw 3 includes a base 31 extending in the front-to-rear direction, a claw portion 32 extending downward from the rear of the base 31, and a protrusion 33 extending downward from the front of the base 31. Here, the center of the control claw 3 in the front-to-rear direction is indicated by dashed line C. In this embodiment, dashed line C also coincides with the center of the base 31 in the front-to-rear direction and corresponds to the position where the underside of the base 31 is bent.

[0028] In particular, the rear portion of the base 31 is composed of an expanded portion 31a, which is formed so that its thickness increases in the vertical direction from the center of the base 31 in the front-to-rear direction toward the rear, and a mounting portion 31b formed behind the expanded portion 31a. The underside of the expanded portion 31a is inclined downward toward the rear, and is pushed upward by contact with the shaft portion 21. In addition, a claw portion 32 protruding downward is connected to the rear end of the underside of the expanded portion 31a. Since the control claw 3 has the expanded portion 31a, the upper surface of the control claw 3 faces closely to the cover 4 and contacts the cover 4 when the pull tab 2 is rotated. In addition, the lower surface of the mounting portion 31b is flat, and by contacting the mounting portion 11b, the claw portion 32 is inserted into the element path 1a through the claw hole 11a, while restricting the downward movement of the control claw 3. The widened portion 31a may be formed across the center of the base 31 in the front-rear direction, or may be formed rearward of the center of the base 31 in the front-rear direction.

[0029] Here, the upper surface of the control claw 3 is composed of a first upper surface 31c extending rearward from the front end of the base 31, a second upper surface 31d connected to the first upper surface 31c so as to bend rearward, and a third upper surface 31e connected to the rear of the second upper surface 31d. The second upper surface 31d includes the upper surface of the widened portion 31a at the rear, and the third upper surface 31e is flush with the upper surface of the placement portion 31b. As will be described later, when the pull tab 2 is rotated, the second upper surface 31d can come into contact with the upper plate portion 41 of the cover 4, but the third upper surface 31e does not come into contact with the upper plate portion 41.

[0030] More specifically, in this embodiment, first top surface 31c and second top surface 31d are each formed flat and connected to bend at bent portion 31f. When receiving portion 31b is placed on placing portion 11b, first top surface 31c is inclined relative to upper plate portion 41 so as to be positioned downward as it moves forward from bent portion 31f. Second top surface 31d is inclined relative to upper plate portion 41 so as to be positioned downward as it moves rearward from bent portion 31f. In other words, bent portion 31f is formed to protrude upward. Furthermore, third top surface 31e is smoothly connected to the rear of second top surface 31d and curved in an arc.

[0031] The bent portion 31f is formed forward of the center portion of the control claw 3 in the front-to-rear direction, and when the placement portion 31b of the control claw 3 is placed on the placement portion 11b, the bent portion 31f is in contact with the lower surface of the upper plate portion 41 or is close to the lower surface with a slight vertical gap. In addition, at this time, the first upper surface 31c and the second upper surface 31d are not in contact with the lower surface of the upper plate portion 41.

[0032] Next, we will explain the operation of the control pawl 3 and cover 4 when the pull tab 2 is rotated. As shown in Figures 3 and 4, when the pull tab 2 is rotated in the front-to-rear direction, the cam portion 24 displaces the base portion 31 of the control pawl 3 upward. As a result, the base portion 31 pushes up the upper plate portion 41, causing the leaf spring portion 42 of the cover 4 to elastically deform, and the rear portion of the cover 4 is displaced upward.

[0033] More specifically, as shown in FIG. 3 , when the pull tab 2 is slightly rotated forward from its reclined position, the bent portion 31f of the control pawl 3 comes into contact with the underside of the upper plate portion 41. At this time, the pawl portion 32 engages with an element (not shown), immobilizing the body 1, until it displaces upward by a certain amount. The bent portion 31f is located forward (closer to the leaf spring portion 42) of the contact point 24a between the cam portion 24 of the pull tab 2 and the control pawl 3. In other words, when the body 1 is immobilized, the contact position between the cover 4 and the control pawl 3 is closer to the leaf spring portion 42 (the bent portion 31f) than the contact point 24a between the cam portion 24 and the control pawl 3. This makes it easier to bias the control pawl 3 downward by the elastic force of the cover 4, making it easier to immobilize the body 1 and prevent the pull tab 2 from dangling.

[0034] 4, when the pull tab 2 is further rotated forward, the control claw 3 is displaced upward, allowing the body 1 to move. At this time, the control claw 3 rotates relative to the cover 4 around the bent portion 31f. As a result, the second upper surface 31d, which extends rearward beyond the center of the control claw 3 in the front-to-rear direction, comes into contact with the lower surface of the upper plate portion 41.

[0035] In particular, when the control pawl 3 is displaced upward by the rotation of the pull tab 2 and the engagement between the pawl 32 and the element is released, that is, when the shaft 21 is in contact with the upper blade 11 and the fuselage 1 is movable, the second upper surface 31d is in contact with the upper plate 41 at a position that overlaps with the front-rear position of the shaft 21. In the example shown in Fig. 4, with respect to the front-rear position, an area A where the second upper surface 31d and the upper plate 41 are in surface contact overlaps with the entire area of the area B where the shaft 21 is formed.

[0036] The shaft 21 of the pull tab 2 displaces the control claw 3 upward via the cam 24, indirectly pushing up the cover 4. At this time, the contact position (area A) between the control claw 3 and the cover 4 and the contact point 24a between the cam 24 and the control claw 3, which is included in area B, overlap in the front-to-rear direction, and because these contact positions overlap when viewed from above and below, the force of the cam 24 that displaces the cover 4 upward can be efficiently transmitted via the control claw 3.

[0037] Furthermore, the second upper surface 31d, which extends rearward from the center of the control pawl 3 in the front-to-rear direction, comes into contact with the underside of the upper plate portion 41, so that the contact position between the control pawl 3 and the cover 4 is located away from the leaf spring portion 42 in the front-to-rear direction. This allows the leaf spring portion 42 to be elastically deformed with a weak force, making it easier to rotate the pull tab 2.

[0038] Furthermore, since the widened portion 31a is formed so that its thickness in the vertical direction increases toward the rear, the rotation of the pull tab 2 makes it easier for the control claw 3 to rotate relative to the cover 4 around the bent portion 31f. This makes it easier for the second upper surface 31d to come into contact with the upper plate portion 41 when the claw portion 32 is raised to an extent that allows the body 1 to move.

[0039] Furthermore, since the second upper surface 31d is in surface contact with the upper plate portion 41 in the region A, the contact between the control claw 3 and the upper plate portion 41 can be stabilized.

[0040] Furthermore, if the pull tab 2 is pulled upward with great force, the rear protruding piece 43c of the cover 4 comes into contact with the rear overhang 16f of the rear mounting post 16, stopping the upward displacement of the cover 4. At this time, the cover 4 is in its uppermost position. Even in this state, the second upper surface 31d of the control claw 3 and the lower surface of the upper plate 41 are in contact in area A. Thus, when the cover 4 is in its uppermost position, the control claw 3 and the cover 4 come into contact at a position overlapping the front-rear position of the contact point 24a between the shaft 21 and the control claw 3, and at a position rearward of the contact point 24a. This prevents the control claw 3 from rotating relative to the cover 4 and the body 1, even if the pull tab 2 is pulled upward excessively. Note that the control claw 3 and the cover 4 need only be in contact at least at a position overlapping the front-rear position of the contact point 24a, but it is preferable that they be in contact at a position rearward of the contact point 24a.

[0041] For example, if the control claw 3 rotates excessively relative to the cover 4 or the body 1, the protrusion 33 may get caught inside the recess 15a, causing the control claw 3 to become stuck in a largely rotated state. As described above, when the control claw 3 and the cover 4 are displaced upward, the second upper surface 31d, which extends rearward from the center of the control claw 3 in the front-to-back direction, comes into contact with the cover 4, making it difficult for the control claw 3 to rotate relative to the cover 4. Furthermore, particularly when the cover 4 is positioned at its uppermost position and does not displace further upward, it is necessary to reliably suppress the rotation of the control claw 3 relative to the cover 4. However, the control claw 3 can be effectively prevented from rotating by contacting the upper plate 41 at a position overlapping the contact point 24a between the shaft 21 and the control claw 3 in the front-to-back direction and / or at a position rearward of the contact point 24a. This allows the restoring force of the cover 4 to reliably push the control claw 3 downward, immobilizing the body 1.

[0042] (Second embodiment) The slider for a slide fastener according to the second embodiment will be described below. Note that explanations of the same configuration as in the first embodiment will be omitted in principle. Fig. 5 is a cross-sectional view of the slider for a slide fastener according to the second embodiment. Fig. 6 is a cross-sectional view of the slider for a slide fastener according to the second embodiment with the pull tab pulled.

[0043] As shown in Figures 5 and 6, in the slider 100 for a slide fastener (hereinafter referred to as slider 100) according to this embodiment, no cam portion 24 is formed on the shaft portion 21 of the pull tab 2. In the example shown, the cross section of the shaft portion 21 is circular. When the pull tab 2 is pulled by an operator, it is displaced upward as it slides up the upper surface of the inclined inner plate 17, displacing the control pawl 3 and the rear portion of the cover 4 upward.

[0044] When the operator releases the pull tab 2 according to this embodiment, the rear part of the cover 4 and the control claw 3 are automatically displaced downward by a restoring force, and the claw portion 32 penetrates deep into the body 1, making it impossible for the body 1 to move relative to the pair of element rows. In other words, the slider 100 according to this embodiment is a slider with a so-called automatic stop function.

[0045] In this embodiment, when the control pawl 3 and cover 4 are displaced upward, the second upper surface 31d, which extends rearward from the center of the control pawl 3 in the front-to-rear direction, comes into contact with the cover 4, making it difficult for the control pawl 3 to rotate relative to the cover 4. Furthermore, when the cover 4 is in its uppermost position and does not displace further upward, the control pawl 3 comes into contact with the upper plate 41 at a position overlapping with the contact point 21a between the shaft 21 and the control pawl 3 in the front-to-rear direction, and / or at a position rearward of the contact point 21a, thereby effectively preventing rotation of the control pawl 3. This allows the restoring force of the cover 4 to reliably push the control pawl 3 downward, making it possible to control the body 1 to be immobile.

[0046] In the above embodiment, the first and second upper surfaces 31c and 31d of the control pawl 3 are flat, and the third upper surface 31e is curved. However, the first and second upper surfaces 31c and 31d may have gently curved shapes. The third upper surface 31e may also be flat. Even in this case, excessive rotation of the control pawl 3 can be prevented by, for example, the rear end of the second upper surface 31d or the third upper surface 31e coming into contact with the upper plate portion 41 of the cover 4 at a position rearward of the center of the control pawl 3 in the front-to-rear direction.

[0047] The present invention is not limited to the above-described embodiment, and can be modified as appropriate within the scope of the invention.

[0048] As described above, the present specification discloses the following: [1] A fuselage (1) having an element passage (1a) penetrating in the front-rear direction and a claw hole (11a) leading upward to the element passage (1a) formed therein, wherein a front mounting post (15) and a rear mounting post (16) protrude from the upper surface of an upper blade (11) covering the upper part of the element passage (1a); a pull tab (2) that is rotatable in the front-rear direction and has a shaft portion (21) that serves as the center of rotation and is disposed on the upper blade (11); a control claw (3) that is placed on the shaft (21) between the front mounting post (15) and the rear mounting post (16) and controls the body (1) so that it can move or cannot move, the control claw (3) controlling the movement of the body (1) by changing the protrusion length of the claw portion (32) that protrudes from the claw hole (11a) into the element path (1a) depending on the vertical position of the shaft (21); a cover (4) in which an upper plate portion (41) and a side plate portion (43) cover the control pawl (3) from above and from the sides, and which is attached to the front mounting column (15) and the rear mounting column (16) so as to be swingable in the up and down direction, and the upper plate portion (41) presses the control pawl (3) downward by the restoring force of a leaf spring portion (42) extending from the front end of the upper plate portion (41) along the front surface of the front mounting column (15); The control claw (3) has an upper surface rearward of the center in the front-rear direction of the control claw (3) that can come into contact with the upper plate portion (41). A slider (100) for a slide fastener, characterized by: With this configuration, even if the control claw is displaced upward on the body, the restoring force of the cover can reliably push the control claw back downward, providing a slider for a slide fastener that can control the slider to be movable or immovable.

[0049] [2] When the cover (4) is at its uppermost position, the upper surface of the control claw (3) can come into contact with the upper plate portion (41) at a position that overlaps with the front-rear position of the contact point between the shaft portion (21) and the control claw (3) in the front-rear direction, and / or at a position rearward of the front-rear position of the contact point between the shaft portion (21) and the control claw (3). The slider (100) for a slide fastener according to [1]. This configuration prevents the control pawl from rotating relative to the cover and the body, even if the pull tab is pulled excessively upward.

[0050] [3] The control pawl (3) has an enlarged portion (31a) extending in the front-rear direction above the shaft portion (21) and formed so that its thickness in the up-down direction increases toward the rear, The lower surface of the widened portion (31a) is inclined downward toward the rear. The slider (100) for a slide fastener according to [1] or [2]. With this configuration, when the rear of the control pawl is raised, the control pawl is more likely to come into contact with the upper plate of the cover, which prevents the control pawl from rotating relative to the cover and the body.

[0051] [4] The upper surface of the widened portion (31a) is formed in a flat shape and is capable of surface contact with the upper plate portion (41). The slider (100) for a slide fastener according to [3]. This configuration stabilizes contact between the control pawl and the upper plate portion of the cover.

[0052] [5] When the body (1) is immovable, the upper surface of the control claw (3) can come into contact with the upper plate portion (41) forward of the position of the contact point between the shaft portion (21) and the control claw (3) in the front-rear direction. A slider (100) for a slide fastener according to any one of [1] to [4]. With this configuration, the control pawl can be easily biased downward by the elastic force of the cover, making it easier to control the body so that it cannot move.

[0053] [6] The upper surface of the control claw (3) has a bent portion (31f) bent so as to protrude upward and forward from the front-rear direction position of the contact point between the shaft portion (21) and the control claw (3). The slider (100) for a slide fastener according to [5]. With this configuration, the control pawl rotates slightly relative to the cover with the bent portion as a fulcrum, making it easier for the widened portion of the control pawl to come into contact with the upper plate portion of the cover.

[0054] [7] The shaft portion (21) has a cam portion (24) that contacts the control pawl (3) and cooperates with the control pawl (3). A slider (100) for a slide fastener according to any one of [1] to [6]. This configuration prevents the handle from swinging.

[0055] [8] When the body (1) is movable and the shaft portion (21) is in contact with the upper blade (11), the upper surface of the control claw (3) can come into contact with the upper plate portion (41) at a position that overlaps the longitudinal position of the shaft portion (21). The slider (100) for a slide fastener according to [7]. According to this configuration, the cam portion can efficiently transmit the force that displaces the cover upward via the control pawl. [Explanation of symbols]

[0056] 1. Torso 1a Element Path 1b Tape groove 2 Pull handles 3 Control Claws 4 Cover 11 Upper wing plate 11a Claw hole 11b Placement section 12 Lower wing plate 13 Flange 14 pillars 15 Front mounting pillar 15a Recess 15b Recess 15e Front storage area 15f front overhang 16 Rear mounting column 16e Rear storage area 16f Rear overhang 17 Inner plate 21 Shaft 22 Knob 23 through hole 24 Cam section 24a Contact point 31 Base 31a Widening section 31b Placement part 31c 1st top surface 31d 2nd top surface 31e 3rd top surface 31f bent part 32 Claw 33 Convex part 41 Upper plate 42 Leaf spring part 42a First spring piece 42b Second spring piece 43 Side plate part 43a Side plate main body 43b Front protruding piece 43c Rear protruding piece 43d Penetration 100 Slider for Slide Fastener (Slider)

Claims

1. a fuselage (1) having an element passage (1a) penetrating in the front-to-rear direction and a claw hole (11a) leading upward to the element passage (1a) formed therein, the fuselage (1) having a front mounting post (15) and a rear mounting post (16) protruding from the upper surface of an upper blade (11) covering the upper side of the element passage (1a); A pull tab (2) that is rotatable in the front-rear direction and has a shaft portion (21) that serves as the center of rotation and is disposed on the upper blade (11); a control claw (3) that is placed on the shaft (21) between the front mounting post (15) and the rear mounting post (16) and controls the body (1) so that it can move or not, the control claw (3) controlling the movement of the body (1) by changing the protrusion length of the claw portion (32) that protrudes from the claw hole (11a) into the element path (1a) depending on the vertical position of the shaft (21); a cover (4) in which an upper plate portion (41) and a side plate portion (43) cover the control claw (3) from above and from the sides, and which is attached to the front mounting column (15) and the rear mounting column (16) so as to be swingable in the vertical direction, and the upper plate portion (41) pushes the control claw (3) downward by the restoring force of a leaf spring portion (42) extending from the front end of the upper plate portion (41) along the front surface of the front mounting column (15); The control claw (3) has an upper surface rearward of the center in the front-rear direction of the control claw (3) that can come into contact with the upper plate portion (41). A slider (100) for a slide fastener.

2. When the cover (4) is at its uppermost position, the upper surface of the control claw (3) can come into contact with the upper plate portion (41) at a position that overlaps with the front-rear position of the contact point between the shaft portion (21) and the control claw (3) and / or at a position rearward of the front-rear position of the contact point between the shaft portion (21) and the control claw (3). A slider (100) for a slide fastener according to claim 1, characterized in that:

3. The control pawl (3) has a widened portion (31a) extending in the front-rear direction above the shaft portion (21) and formed so that its thickness in the up-down direction increases toward the rear, The lower surface of the widened portion (31a) is inclined downward toward the rear. A slider (100) for a slide fastener according to claim 2, characterized in that:

4. The upper surface of the widened portion (31a) is formed in a flat shape and is capable of surface contact with the upper plate portion (41). A slider (100) for a slide fastener according to claim 3, characterized in that:

5. When the body (1) is immovable, the upper surface of the control claw (3) can come into contact with the upper plate portion (41) in front of the position of the contact point between the shaft portion (21) and the control claw (3) in the front-rear direction. A slider (100) for a slide fastener according to claim 4.

6. The upper surface of the control claw (3) has a bent portion (31f) bent so as to protrude upward and forward from the front-rear direction position of the contact point between the shaft portion (21) and the control claw (3). A slider (100) for a slide fastener according to claim 5.

7. The shaft portion (21) has a cam portion (24) that contacts the control pawl (3) and cooperates with the control pawl (3). A slider (100) for a slide fastener according to any one of claims 1 to 6.

8. When the fuselage (1) is movable and the shaft portion (21) is in contact with the upper blade (11), the upper surface of the control claw (3) can come into contact with the upper plate portion (41) at a position that overlaps with the longitudinal position of the shaft portion (21). A slider (100) for a slide fastener according to claim 7, characterized in that:

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