One-touch zipper
The hook mechanism with a spring-biased locking claw and hook release key simplifies the attachment and detachment of components, addressing the access issue in conventional one-touch fasteners, enhancing assembly efficiency and reducing drilling complexity.
Patent Information
- Application Number
- JP2022007737
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2022-01-21
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2042-01-21
Smart Images
Figure 0007786960000001 
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Abstract
Description
[Technical Field]
[0001] The present invention relates to a one-touch fastener used to join two or more members. [Background technology]
[0002] The inventor of the present application previously proposed a one-touch fastener in Patent Document 1 that is useful for quickly and simply joining two or more members together.
[0003] The one-touch fastener (one-touch fastener) in Document 1 comprises a mounting plate having a plane larger than the mounting hole of one of the members, a pair of bearing plates that protrude parallel to the plane of the mounting plate, leaving the entire peripheral edge of the plane as a flange so that they can be inserted into each mounting hole of each member, a pair of claw plates that have a rotation center on the edge of one end and an arc-shaped edge on the other end that forms a claw portion from one side edge to the other edge, and are rotatably supported between the pair of bearing plates via a pair of shafts inserted on both sides of the protruding end of each bearing plate, with the claw portions arranged so that they can be protruded from and retracted from both side edges of each bearing plate, and a spring member that is interposed between the pair of claw plates or between each claw plate and the bearing plate and rotates and biases each claw plate so that it can protrude from both side edges of each bearing plate in a normal state, and the pair of bearing plates together with each claw plate are passed through the mounting holes of the two members with one push, and each claw plate is engaged with the edge of the mounting hole of the other member.
[0004] In this way, this one-touch fastener allows two components to be joined quickly and easily by simply passing a pair of bearing plates through the mounting holes of the two components with a single push, a simple manual process that does not require any tools. [Prior art documents] [Patent documents]
[0005] [Patent Document 1] Japanese Patent Publication No. 2020-034155 Summary of the Invention [Problem to be solved by the invention]
[0006] However, in the above-mentioned conventional one-touch fastener, a pair of bearing plates together with each claw plate are passed through the respective mounting holes of two members with one push, and each claw plate is engaged with the edge of the mounting hole of the other member. Therefore, if it becomes necessary to remove this one-touch fastener after it has been attached to the mounting holes of two members, the one-touch fastener can be pulled out from one member while pressing each claw plate into the pair of bearing plates on the other member side, but this removal operation cannot be performed unless the hand reaches the other member side.
[0007] The present invention solves these problems of the past and aims to provide a one-touch fastener of this type that can join two or more components with a simple installation procedure of passing the fastener through the mounting holes of each component with one push, without using tools; to provide mounting holes in each component with a simple shape, thereby reducing the cost required for drilling holes; and to enable the one-touch fastener to be easily removed after being attached between components. [Means for solving the problem]
[0008] In order to achieve the above object, the present invention provides: a hook mechanism comprising: a head; a shaft extending from the head; and a hook in a groove formed on the circumferential surface of the shaft, one end of which is rotatably supported via an axis with the other end of the hook facing the tip of the shaft and the other end facing the head, the other end of which is incorporated as a locking claw so as to be able to protrude into and out of the groove of the shaft, the hook being normally biased to rotate by a spring member within the groove of the shaft, so that the locking claw elastically protrudes from the groove of the shaft; wherein one mounting hole formed in one of at least two members is aligned with the other mounting hole formed in the other, the shaft is passed from the one mounting hole to the other mounting hole, and the locking claw of the hook is elastically engaged with or around the edge of the other mounting hole, thereby attaching one of at least two members to the other, a hook release port formed in the head in the shape of a small hole and facing the one end of the hook in the groove of the shaft; a hook release key that is an accessory of the hook mechanism and has an elongated pin that can be inserted into the hook release port and can press the one end of the hook within the shaft; 、 Equipped with When removing the one-touch fastener from the two components, the pin of the hook release key is passed through the hook release opening of the head and into the groove of the shaft, and the pin presses the one end of the hook, causing the locking claw of the hook to retract into the shaft and releasing the elastic engagement between the locking claw of the hook and the edge or periphery of the edge of the other mounting hole. The gist of this is as follows.
[0009] In addition, this one-touch fastener: The shaft is formed with a groove from the tip end surface toward the head, with both sides of the groove opening into the circumferential surface of the shaft, the shaft being composed of a pair of split shafts, the groove forming a hook assembly portion with a spring member arranged at the tip end side, and the hook mechanism is formed in a substantially plate or block shape with one side disposed along one side of the groove opening into the circumferential surface of the shaft so as to be fittable into the hook assembly portion, and has shaft insertion portions near one end corresponding to the respective bearings of the respective split shafts. It is preferable that the hook has an arc-shaped end with the center of the circle closer to the one end than the shaft insertion portion and closer to the other side opposite the one side, and the area from the one side to the other end serves as a locking claw, and is rotatably supported by the hook assembly portion via the shaft so that the locking claw can be moved in and out from one side of the groove, and that the spring member is arranged in the spring member arrangement portion and operatively connected to the hook, and normally urges the one end of the hook to rotate toward the other side of the groove, causing the locking claw to elastically protrude outward from one side of the groove.
[0010] In this case, the spring material is a coil spring. Gu Preferably, the spring member arranging portion is located on the tip end side of the groove, in a direction perpendicular to the axial direction of the shaft and perpendicular to the space between the pair of bearings, and the other end of the groove is opened on the circumferential surface of the shaft so that the coil spring can be inserted therethrough, and one end of the groove is formed as a spring bearing portion for the coil spring, with one end of the groove being a bottom near the circumferential surface of the shaft and serving as a spring bearing portion for the coil spring, and is formed in a substantially bottomed cylindrical shape, and one end of the hook protrudes toward the other end side of the spring member arranging portion to form the spring bearing portion for the coil spring, and the coil spring is interposed between the spring bearing portion of the spring member arranging portion and the spring bearing portion of the hook, and a stopper is provided at the other end of the spring member arranging portion so that the spring bearing portion of the hook can come into impact with it, and engagement between the spring bearing portion of the hook and the stopper restricts rotation of one end of the hook toward the other side of the groove, and the coil spring is compressed between the spring bearing portions.
[0011] In this case, it is desirable that the stopper at the other end of the spring member placement portion be formed by crimping the other end of the spring member placement portion.
[0012] In this case, the spring member is a coil spring. Gu a spring member arranging portion provided at a tip end of the groove in a direction perpendicular to the axial direction of the shaft and perpendicular to the space between the pair of bearings, the other end of the groove being open to the circumferential surface of the shaft so that the coil spring can be inserted therethrough, and one end of the groove being formed as a bottom near the circumferential surface of the shaft, so that the groove is formed into a substantially cylindrical shape with a bottom, and a spring receiving portion and a front end of the spring member arranging portion provided at the bottom of the one end of the spring member arranging portion. Notes It is preferable that a stopper is disposed having a hook rotation restricting engagement portion extending from a spring receiving portion along one side of the groove so as to be able to engage with one end of the hook, a spring receiving portion of the coil spring is formed at one end of the hook protruding toward the other end side of the spring member arranging portion, and a rotation restricting engaged portion is formed at one end of the hook at one end side of the spring member arranging portion so as to be able to engage with the hook rotation restricting engagement portion, the coil spring is interposed between the spring receiving portion of the stopper of the spring member arranging portion and the spring receiving portion of the hook, and the rotation of one end of the hook toward the other side of the groove is restricted by engagement between the rotation restricting engagement portion of the stopper and the rotation restricting engaged portion of the hook, and the coil spring is compressed between the spring receiving portions.
[0013] Furthermore, in this case, the spring member is provided with a coil spring. GuThe spring member arrangement portion of the groove is formed in a generally bottomed cylindrical shape with one end opening to the tip end surface of the shaft on the tip end side of the groove, so that the coil spring can be inserted between the inner surfaces of the pair of split shafts in the axial direction, and the other end is the bottom, and one end of the hook is formed in a two-sided shape with a V-shaped cross section so that a part of the top side can protrude from the other end of the spring member arrangement portion to the spring member arrangement portion when the locking claw of the hook is sunk into the hook assembly portion, and one surface between the top and one side of the hook forms a flat surface at the other end of the spring member arrangement portion when the locking claw of the hook protrudes from the hook assembly portion, and the end of one side of the hook on the one surface is inserted into the spring It is preferable that the spring member arrangement portion is formed in a convex shape so as to be able to protrude slightly into the member arrangement portion, and that a stopper consisting of a flat plate is arranged at the other end of the spring member arrangement portion, which forms a spring receiving portion for the coil spring and engages with the convex shape of one end of the hook to form a rotation regulating portion for the hook, the coil spring is attached between the stopper at the other end and one end of the spring member arrangement portion, and a stopper is provided at one end of the spring member arrangement portion to hold the coil spring in a manner that allows it to be pressed, and the rotation of one end of the hook in the other direction of the groove is restricted by the engagement between the convex shape of one end of the hook and the stopper at the other end of the spring member arrangement portion, and the coil spring is compressed between the stoppers.
[0014] In this case, it is desirable that the stopper at one end of the spring member placement portion be formed by crimping one end of the spring member placement portion.
[0015] It is preferable that the head of this one-touch fastener be formed in a disk shape and the shaft be formed in a cylindrical shape. [Effects of the Invention]
[0016] The one-touch fastener of the present invention, due to the above-mentioned configurations, exhibits the following unique and exceptional effects. (1) The one-touch fastener can be inserted into the mounting holes of at least two components with a single push without using any tools, simplifying the installation process and enabling the two components to be joined more quickly and easily than ever before. (2) The head is made slightly larger than the mounting hole of one of the two components, and the shaft is large enough (diameter) to fit into each mounting hole of the two components and has a predetermined length to pass through each mounting hole.The shaft can be a simple shape such as a cylinder or a prism, so the mounting holes of the two components can be made simple in shape, and the cost of drilling can be kept low. (3) When removing this one-touch fastener from a two-part bond, if one can directly reach the engagement point between the hook's locking claw and the edge or periphery of the mounting hole of the other part, one can easily remove the one-touch fastener from the two parts by pushing each hook directly onto the shaft with one's fingers at the edge or periphery of the mounting hole of the other part, thereby releasing the engagement between the hook and the edge or periphery of the mounting hole of the other part, and pulling the one-touch fastener out of each mounting hole of each part. (4) When removing this one-touch fastener from two components, if it is not possible to reach the engagement position between the hook's locking claw and the edge or periphery of the mounting hole of the other component and the hook cannot be directly pushed in by hand around the edge or periphery of the mounting hole of the other component, a hook release key can be used to pass a pin through the hook release opening in the head into the shaft, and by pressing one end of the hook with the pin, the hook's locking claw is retracted into the shaft, releasing the elastic engagement between the hook's locking claw and the edge or periphery of the mounting hole of the other component, and the one-touch fastener can be easily removed from the two components by pulling it out of each mounting hole of the two components. [Brief explanation of the drawings]
[0017] [Figure 1] 1A and 1B are diagrams showing the overall configuration of a one-touch fastener according to a first embodiment of the present invention ((a) is a rear view, (b) is a side view, (c) is a side view in a direction different from (b), and (d) is a front view). [Figure 2]A diagram showing the configuration of the head and shaft of the one-touch fastener ((a) is a side view, (b) is a front view, (c) is a rear cross-sectional view, (d) is a side cross-sectional view, and (e) is a side cross-sectional view in a different direction from (d)). [Figure 3] 1A and 1B are diagrams showing the configuration of a stopper provided on the shaft of the one-touch fastener ((a) is a rear view, and (b) is a side view). [Figure 4] A diagram showing the configuration of the axis provided on the shaft of the one-touch fastener ((a) is an end view, (b) is a side view, and (c) is a other end view). [Figure 5] A diagram showing the hook configuration of the one-touch fastener ((a) is a side view, and (b) is a side view in a different direction from (a)). [Figure 6] FIG. 10 is a side view showing the configuration of the hook release key used in the one-touch fastener. [Figure 7] A diagram showing an example of using the one-touch fastener [Figure 8] 1A and 1B are diagrams showing the overall configuration of a one-touch fastener according to a second embodiment of the present invention ((a) is a rear view, (b) is a side view, (c) is a side view in a direction different from (b), and (d) is a front view). [Figure 9] 1A and 1B are diagrams showing the configuration of a stopper provided on the shaft of the one-touch fastener ((a) is a side view, and (b) is a side view in a different direction from (a)). [Figure 10] A diagram showing the hook configuration of the one-touch fastener ((a) is a side view, and (b) is a side view in a different direction from (a)). [Figure 11] A diagram showing an example of using the one-touch fastener [Figure 12] 10A and 10B are diagrams showing the overall configuration of a one-touch fastener according to a third embodiment of the present invention ((a) is a side view, (b) is a side cross-sectional view, and (c) is a side cross-sectional view taken in a different direction from (b)). [Figure 13] 1A and 1B are diagrams showing the configuration of a stopper provided on the shaft of the one-touch fastener ((a) is a side view, and (b) is a side view in a different direction from (a)). [Figure 14] A diagram showing the hook configuration of the one-touch fastener ((a) is a side view, and (b) is a side view in a different direction from (a)). [Figure 15] A diagram showing an example of using the one-touch fastener DETAILED DESCRIPTION OF THE INVENTION
[0018] Next, an embodiment of the present invention will be described with reference to the drawings. Figures 1 to 5 show the first embodiment. Figure 1 shows the overall configuration of the one-touch fastener, and Figures 2, 3, 4, and 5 show the configuration of each part of the one-touch fastener. Figure 6 shows the configuration of the hook release key used in common in each of the first to third embodiments. In the following description of each embodiment, the term "component" refers to, for example, a panel that constitutes an assembled rack, cabinet, etc. Furthermore, the component referred to here may be made of metal or synthetic resin.
[0019] As shown in Figure 1, the one-touch fastener F1 is composed of a head 1, a shaft 2 extending from the head 1, and a hook mechanism M3 in which a hook 3 is rotatably supported in a groove 20 on the circumferential surface of the shaft 2 with one end 301 facing the tip of the shaft 2 and the other end 302 facing the head 1 via an axis 4, and the other end 302 side is incorporated as a locking claw 31 so that it can be inserted into and removed from the groove 20 on the circumferential surface of the shaft 2, and the hook 3 is normally biased to rotate within the groove 20 of the shaft 2 by a spring member 5, so that the locking claw 31 of the hook 3 elastically protrudes from the groove 20 on the circumferential surface of the shaft 2.
[0020] In this one-touch fastener F1 (hereinafter sometimes simply referred to as fastener F1), a groove 20 is formed from the tip surface 2T of the shaft 2 toward the head 1, with both sides of the groove 20 (one side 201, the other side 202) opening onto the circumferential surface of the shaft 2, the shaft 2 consisting of a pair of split shafts 21, 21, and the groove 20 forms a hook assembly portion with a spring member arrangement portion 20T on the tip side (hereinafter sometimes referred to as groove 20 or hook assembly portion 20).
[0021] As shown in FIG. 1, in this fastener F1, the head 1 is formed in a disk shape. The shaft 2 is formed in a cylindrical shape and is divided into two parts with a groove 20 in between, consisting of a pair of split shafts 21. As shown in FIG. 2, in this case, the periphery of the shaft 2 of the head 1 is flanged. The groove 20 of the shaft 2 is formed from the diameter of the circular tip surface 2T of the shaft 2 toward the head 1 with a width slightly larger than the thickness of the hook 3, and has a long U-shaped cross section in side view. Both longitudinal sides 201 and 202 of the groove 20 open on the outer peripheral surface of the shaft 2, and each split shaft 21 has an arc-shaped outer peripheral surface, a flat inner surface, and a tip surface that is approximately D-shaped in plan view (tip surface view). As described above, the groove 20 between each split shaft 21 is a hook installation portion. A predetermined range from the tip opening surface to the tip opening surface closer to the tip opening surface than a pair of bearings 211 (described later) is a spring member arrangement portion 20T, and the area behind it to the bottom of the groove 20 is a hook arrangement portion 20R. The portion between the bottom of groove 20 and head 1 is the portion that is passed through and left in place between two components when the one-touch fastener F1 is in use, and the length of this portion is set according to the thickness between the two components when the one-touch fastener F1 is in use, and several types of one-touch fasteners F1 with different lengths are available.
[0022] As shown in FIG. 1, the hook mechanism M3 is configured to include a shaft 4, a hook 3, and a spring member 5.
[0023] The shaft 4 is disposed between the axially intermediate portions of the pair of split shafts 21 via a pair of bearings 211. In this case, as shown in FIG. 2, the pair of bearings 211 are formed by drilling holes in the longitudinally intermediate portion of the pair of split shafts 21, more specifically, in the widthwise center of each split shaft 21, slightly closer to the tip than the longitudinal center. In these bearings 211, the diameters of the holes in each split shaft 21 are different, one being a small-diameter cylindrical hole and the other a large-diameter cylindrical hole. As shown in FIG. 4, the shaft 4 is formed by a cylindrical pin, and corresponding to the pair of bearings 211, one end that passes through one of the small-diameter holes in the pair of bearings 211 is a small-diameter portion, and the other end that passes through the other large-diameter hole is a large-diameter portion.
[0024] As shown in FIG. 1, the hook 3 is formed in a generally plate-like shape, with one side portion 303 (see FIG. 5) disposed along one side 201 of a groove opened in the circumferential surface of the shaft 2 so as to be fittable into the hook assembly portion 20. The specific shape of the hook will be described later. As shown in FIG. 5, the hook 3 has shaft insertion portions 30 corresponding to the bearings 211 of the pair of split shafts 21, between both side portions 305, 306, near one end 301. In this case, the shaft insertion portions 30 are formed in both side portions 305, 306 of the hook 3 facing the inner surface of the groove 20, which is the hook assembly portion 20, near one end 301, approximately at the center in the width direction of the one end 301, and are cylindrically shaped and have approximately the same diameter as one of the large-diameter holes forming the bearing 211 of one of the split shafts 21, penetrating between the both side portions 305, 306. Moreover, the other end 302 of the hook 3 is formed in an arc shape with the center of the circle (imaginary circle) closer to one end 301 of the hook 3 than to the shaft insertion portion 30 and at a predetermined position closer to the other side 304 of the hook 3, opposite the one side 303. Thus, in this hook 3, the locking claw 31 extends from the one side 303 to the other end 302. In this way, as shown in FIG. 1 , the hook 3 is rotatably supported via the shaft 4 on (the hook arrangement portion 20R of) the hook assembly portion 20 of the shaft 2, and the locking claw 31 is arranged so as to be able to appear and disappear from one side 201 of the groove of the shaft 2. After the hook 3 is assembled, the end of the large diameter portion of the shaft 4 passed through each bearing 211 of the pair of split shafts 21 is crimped against the outer opening surface of the large diameter hole that forms the bearing 211 of the other split shaft 21 to prevent it from coming out, and the shaft 4 is attached between the pair of bearings 211.
[0025] Furthermore, although some of the description will be repeated, this hook 3 has the following configuration and shape. As shown in Fig. 5, one side portion 303 is formed with a narrow, linear cross section so as to be able to fit into one side 201 of a groove opened in the circumferential surface of shaft 2, and the entire surface is a rectangle elongated toward both ends 301, 302. One end 301, that is, the portion between one end of one side portion 303 and one end of the other side portion 304, has a semicircular cross section as a basic shape. In this case, the cross section is formed from one end of one side portion 303 to a substantially semicircular shape with the center of the shaft insertion portion 30 as the center of the circle, and a spring seat 32 is formed on this cross section, as will be described later. The other side portion 304, which is opposite to one side portion 303, is formed from the other end of one end 301 via a step portion 307, more inward than the other end of one end 301 and substantially parallel to one side portion 303, and the entire surface is a rectangle elongated toward both ends 301, 302. Furthermore, step portion 307 between the other end of one end portion 301 and other side portion 304 is formed at a substantially right angle to other side portion 304, and this step portion 307 serves as a pin engagement portion (hereinafter sometimes referred to as pin engagement portion 307) for receiving pin 61 of hook release key 6, which will be described later. As already described, other end portion 302, that is, the portion between the other end of one side portion 303 and the other end of other side portion 304, has an arc-shaped cross section and is an elongated rectangle. Furthermore, both side surface portions 305, 306 between one side portion 303 and other side portion 304 of hook 3 have a composite shape with one end basically semicircular and having spring seat portion 32, and the other end is arc-shaped, with the entire surface being a substantially rectangle that is long in both direction.
[0026] In this way, the hook mechanism M3 is arranged in the hook assembly portion 20 of the shaft 2 with one end 301 facing the tip of the shaft 2 and the other end 302 facing the head 1, the shaft insertion portion 30 on the one end 301 side is aligned between a pair of bearings 21 of the shaft 2, the shaft 4 is passed between these bearings 21 and the shaft insertion portion 30 and is supported rotatably, and the locking claw 31 on the other end 302 side is assembled so as to be able to protrude and retract from the hook assembly portion 20 of the shaft 2.
[0027] As shown in FIG. 1, the spring member 5 is arranged in the spring member arrangement portion 20T of the hook assembly portion 20, and is operatively connected to the hook 3 so that, in a normal state, one end portion 301 of the hook 3 is rotated and biased toward the other side 202 of the groove, causing the locking claw 31 (only) to elastically protrude outward from one side 201 of the groove (predetermined protruding state).
[0028] In this case, a coil spring (hereinafter referred to as coil spring 5) is used as the spring member 5.
[0029] As shown in Figure 2, the spring member arrangement portion 20T is located at the tip side of the groove 20, perpendicular to the axial direction of the shaft 2 and perpendicular to the space between the pair of bearings 211, and the other end on the other side 202 of the groove is open so that the coil spring 5 can be inserted into the circumferential surface of the shaft 2, and one end on one side 201 of the groove is formed as a spring receiving portion 22 for the coil spring 5, with the bottom located near the circumferential surface of the shaft 2, and is formed in an approximately cylindrical shape with a bottom.
[0030] 5, the spring bearing portion 32 of the hook 3 is formed at one end 301 of the hook 3 so as to protrude toward the other end side of the spring member arrangement portion 20T. In this case, the spring bearing portion 32 extends in an elongated trapezoidal cross section, and each face forming the tip surface and peripheral surface is a substantially rectangular flat surface, and the flat surface facing the spring bearing portion 22 of the spring member arrangement portion 20T is parallel to one side portion 303 of the hook 3 or is slightly inclined from parallel to one end 301 of the hook 3; in this case, it is the latter, and this surface serves as a spring bearing for the coil spring 5. Thus, the coil spring 5 is interposed between the spring bearing portion 22 of the spring member arrangement portion 20T and the spring bearing portion 32 of the hook 3. After the coil spring 5 is mounted on the spring member arrangement portion 20T, as shown in Fig. 3, a stopper 23 is provided at the other end of the spring member arrangement portion 20T so that the spring receiving portion 32 of the hook 3 can come into contact with the stopper 23. In this case, the stopper 23 is formed by crimping the tip surface 2T side of the shaft 2 at the other end of the spring member arrangement portion 20T. In this manner, the engagement between the spring receiving portion 32 of the hook 3 and the stopper 23 restricts the rotation of one end 301 of the hook 3 toward the other side 202 of the groove, and the coil spring 5 is compressed between the spring receiving portions 22, 32. As described above, the locking claw 31 of the hook 3 elastically protrudes (to a predetermined protruding state) from one side 201 of the groove of the shaft 2 in a normal state (i.e., unless the locking claw 31 of the hook 3 in a predetermined protruding state is pressed toward one side 201 of the groove).
[0031] In this way, with this one-touch fastener F1, the mounting hole formed in one member is aligned with the mounting hole formed in the other member, and then the shaft 2 is passed from the mounting hole of one member to the mounting hole of the other member, and the locking claw 31 of the hook 3 is elastically engaged with the edge of the other mounting hole, thereby attaching at least one of the two members to the other.
[0032] 1, the one-touch fastener F1 is further provided with a hook release function 6 for releasing the hook 3 engaged with the edge of the mounting hole of the other of the two components. As shown in Fig. 2, the hook release function 6 comprises a hook release opening 60 drilled in the head 1, and a hook release key 61 (see Fig. 6) that passes through the hook release opening 60 to rotate the hook 3.
[0033] As shown in FIG. 2, the hook release port 60 is opened in the head 1 in the form of a small hole opposite one end 301 of the hook 3 in the shaft 2. In this case, the hook release port 60 is formed by drilling a small circular hole of a predetermined diameter from a position on the tip side of the head 1 opposite one end 301 of the hook 3 in the shaft 2 (in other words, from one end of the bottom of the groove 20 in the shaft 2 (the end on the other side 202 of the groove)) to one end of the rear end face (bottom surface) of the head 1 (the end on the other side 202 of the groove). As shown in FIG. 6, the hook release key 61 is provided as an accessory to the hook mechanism M3, and comprises an elongated pin 611 that can be inserted into the hook release port 60 and can press one end 301 of the hook 3 in the shaft 2, and a grip 612 that is thicker than the pin 611 and is concentrically connected to the base end of the pin 611. In this case, the pin 611 is cylindrical and has a diameter approximately the same as or slightly smaller than the inner diameter of the hook release port 60, and has a length that includes the length from the head 1 to one end 301 of the hook 3 inside the shaft 2, plus the distance by which one end 301 of the hook 3 is pushed and rotated to push the locking claw 31 of the hook 3 from one side 201 of the groove in the shaft 2 into the hook assembly portion 20, plus the length for inserting and fixing the pin 611 inside the grip 612. The grip 612 has a diameter and length that is easy to hold in the hand, and has a connecting port having a predetermined diameter and length from the center of the tip to the base end for fixing the pin 611, and is cylindrical and tapered toward the tip. The pin 611 and the grip 612 are connected by inserting and fixing the base end of the pin 611 into the connecting port of the grip 612, and the pin 611 protrudes a predetermined length from the tip of the grip 612.
[0034] In this way, when removing this one-touch fastener F1 from the two components, the pin 611 of the hook release key 61 is passed through the hook release port 60 of the head 1 and into the shaft 2, and the tip of the pin 611 is used to press one end 301 of the hook 3, in this case the stepped portion 307 of the one end 301, i.e., the pin engagement portion 307, thereby rotating the hook 3 and causing the locking claw 31 of the hook 3 to sink from one side 201 of the groove into the shaft 2, thereby releasing the elastic engagement between the locking claw 31 of the hook 3 and the edge of the other mounting hole of the two components.
[0035] An example of the use of the one-touch fastener F1 is shown in Figure 7. In this case, the head 1 is disc-shaped and the shaft 2 is cylindrical, so that circular mounting holes O of approximately the same diameter as or slightly larger than the shaft 2 are drilled in the two members P1 and P2 to accommodate the fastener F1.
[0036] When attaching one of the two members P1 and P2 to the other, first assemble the two members P1 and P2 and align the mounting holes O and O of each member P1 and P2. Next, align the shaft 2 of the one-touch fastener F1 with the mounting hole O of one member P1, and insert and push it into the mounting holes O and O of each member P1 and P2 (one push).
[0037] 7(1), the shaft 2 of the one-touch fastener F1 slides from the tip to the middle and then from the middle to the base along the edges of the mounting holes O, O of the members P1, P2, passing through the mounting holes O, O of the members P1, P2. During this time, the locking pawl 31 of the hook 3 protruding outward from one side 201 of the groove of the shaft 2 comes into contact with and is pressed against the edges of the mounting holes O, O of the members P1, P2, compressing the coil spring 5 in the spring member arrangement portion 20T, while being rotated from one side 201 of the groove of the shaft 2 towards the hook assembly portion 20 inside the shaft 2 and sinking into one side 201 of the groove. Then, when the locking claw 31 is completely sunk into the hook assembly portion 20 from one side 201 of the groove of the shaft 2 and the shaft 2 has completely passed through each of the mounting holes O, O of each of the members P1, P2, the head 1 (flange) abuts against the entire peripheral edge of the mounting hole O of one of the members P1, and the locking claw 31 of the hook 3 sunk into one side 201 of the groove of the shaft 2 is caused to protrude outward to a predetermined protruding state from one side 201 of the groove by the biasing force of the coil spring 5 in the spring member arrangement portion 20T (elastic return of the coil spring 5) as the external pressure is released, and it elastically engages with the edge of the mounting hole O of the other member P2. 5, in this one-touch fastener F1, the rotation center of the hook 3 is located on one end 301 side of the hook 3, approximately in the center of the width of the one end 301, and the other end 302 of the hook 3 is formed in an arc shape with the center of the circle located closer to the one end 301 of the hook 3 and closer to the other side 304 than the rotation center of each hook 3, so that as the locking claws 31 of the hook 3 rotate outward, the arc-shaped portions of the locking claws 31 protrude toward the edge of the mounting hole 62 and bite into the edge of the mounting hole O, thereby being elastically locked. As a result, the shaft 2 is pulled from the mounting hole O of one member P1 toward the mounting hole O of the other member P2, and the flange of the head 1 is pressed against the entire peripheral edge of the mounting hole O of one member P1, and the two members P1 and P2 are fastened and joined between the head 1 and the hook 3. Therefore, even if there is some variation in the thickness of the two members P1 and P2, the members P1 and P2 can be reliably joined without any rattle. Note that Fig. 7(2-1) illustrates an example in which the thicknesses of the two members P1 and P2 are large, and Fig. 7(3) illustrates an example in which the thicknesses of the two members P1 and P2 are small.In the case of FIG. 7(3), the thickness between the two members P1 and P2 is small, so to compensate for this, a washer (nylon washer) 7 is interposed between the head 1 and one of the members P1.
[0038] Furthermore, after joining two members P1 and P2 with the one-touch fastener F1, if it is necessary to remove this one-touch fastener F1 from the two members P1 and P2, the fastener F1 can be removed in the following manner.
[0039] 6 is held in one hand, the head 1 is grasped with the other hand, the pin 611 of the hook release key 6 is passed through the hook release opening 60 of the head 1 into the shaft 2, the tip of the pin 611 is brought into contact with the pin engagement portion 307 between the one end 301 and the other side 304 of the hook 3, and the tip of the pin 611 is used to press the one end 301 of the hook 3. In this way, the hook 3 is rotated from the other side 202 of the groove toward the one side 201 of the groove, and the locking claw 31 of the hook 3 is rotated from the outside of the one side 201 of the groove toward the one side 201 of the groove, opposite to the one end 301 of the hook 3, and is inserted from the one side 201 of the groove into the hook assembly portion 20 inside the shaft 2, and the elastic engagement between the locking claw 31 of the hook 3 and the edge of the mounting hole O of the other member P2 is released. This allows the one-touch fastener F1 to be removed from the mounting holes O, O of the members P1, P2. That is, the head 1 can be pulled out by using one hand on one side. In this way, the fastener F1 can be easily removed from the two members P1, P2 by simply using the hook release key 61 to push in one end 301 of the hook 3, pinching the head 1 and pulling out the fastener F1.
[0040] Furthermore, when removing the one-touch fastener F1 from the two members P1 and P2, if your hands can reach the position where the locking claw 31 of the hook 3 engages with the edge of the mounting hole O of the other member P2, you can grasp the head 1 on the mounting hole O side of one member P1 with one hand, and with the other hand press the hook 3 on the mounting hole O side of the other member P2 toward one side 201 of the groove in the shaft 2, while pulling the head 1 with one hand on either side, and you can then pull out the fastener F1. This also makes it easy to remove the fastener F1.
[0041] As explained above, with this one-touch fastener F1, two components can be fastened together with the head 1 and hook 3 simply by passing the shaft 2 through the mounting holes of the two components with a single push, making it possible to easily join the two components without using any tools. Moreover, because this fastener F1 is bolt-shaped with the circular head 1 and cylindrical shaft 2, it is easy to hold in the hand like a regular bolt, and the work of joining two components can be carried out more quickly and reliably than ever before.
[0042] On the other hand, head 1 is made slightly larger than the mounting hole of one of the two members, shaft 2 is made to have a size (diameter) that can be fitted into each mounting hole of the two members, and a predetermined length that can pass through each mounting hole, and its cross-sectional shape can be a simple shape such as circular, so each mounting hole of the two members can be made to have a simple shape such as circular. This makes the drilling work easier and reduces the cost required for drilling.
[0043] With this one-touch fastener F1, when it is necessary to remove the fastener F1 that has been passed through and fixed between two members and it is not possible to reach the engagement position between the locking claw 31 of the hook 3 and the edge of the mounting hole of the other member and therefore it is not possible to directly push the hook 3 into the edge of the mounting hole of the other member by hand, it is possible to use the hook release key 61 to pass the pin 611 through the hook release port 60 of the head 1 into the shaft 2 and press one end 301 of the hook 3 with the tip of the pin 611, thereby causing the locking claw 31 of the hook 3 to retract into the shaft 2 and release the elastic engagement between the locking claw 31 of the hook 3 and the edge of the mounting hole of the other member, therefore the fastener F1 can be easily removed from the two members by pressing one end 301 of the hook 3 with the hook release key 61, while pinching the head 1 and pulling the fastener F1 out of each of the mounting holes of the two members.
[0044] 8 to 10 show a second embodiment. In this embodiment (one-touch fastener F2), the configuration of the spring member arrangement portion 20T and the hook 3 differs from that of the first embodiment. In the description of this embodiment, the same reference numerals as in the first embodiment are used for the components common to the first embodiment, and redundant explanations will be omitted, while new reference numerals are used for the components different from the first embodiment, and additional explanations will be provided.
[0045] 8, the spring member arrangement portion 20T itself, as in the first embodiment, is formed in a substantially cylindrical shape with a bottom, with the tip end side of the groove 20 being open in a direction perpendicular to the axial direction of the shaft 2 and perpendicular to the space between the pair of bearings 211, with the other end on the other side 202 of the groove being open so that the coil spring 5 can be inserted into the circumferential surface of the shaft 2, and one end on the one side 201 of the groove being formed as a bottom near the circumferential surface of the shaft 2 (in front of the one side 201 of the groove as seen from the other side 202 of the groove).Unlike the first embodiment, a stopper 24 is arranged at the bottom of one end of this spring member arrangement portion 20T.
[0046] 9, the stopper 24 has a spring receiving portion 241 fitted to the bottom of the spring member disposing portion 20T, and a hook rotation restricting engagement portion 242 extending from the spring receiving portion 241 along one side 201 of the groove so as to be able to engage with one end 301-2 of the hook 3. In this case, the stopper 24 is composed of a circular flat plate portion 241 and two rectangular flat plate portions 242 extending a predetermined length in two diametrically opposed directions from two diametrically opposed positions on the outer periphery of the circular flat plate portion 241. The circular flat plate portion 241 is formed to be able to fit to the bottom of the spring member disposing portion 20T and serves as the spring receiving portion 241, and one of the two rectangular flat plate portions 242 extends along one side 201 of the groove and is formed to a predetermined length and width so as to be able to engage with one end 301 of the hook 3 and serves as the hook rotation restricting engagement portion 242. Such a stopper 24 is attached by arranging the spring receiving portion 241 at the bottom of the spring member arranging portion 20T and arranging the hook rotation restricting engagement portion 242 along one side 201 of the groove.
[0047] 10, the hook 3 has one end 301-2 having a basic semicircular cross section, and in this case, the cross section is formed to be approximately semicircular from (a position of) a little inside one end of one side portion 303 with the center of the shaft insertion portion 30 as the center of the circle, and a rotation restricting engaged portion 33 and a spring receiving portion 34 are formed on this, as will be described later. In this case, the step portion 307 between the one end 301-2 and the other side portion 304, i.e., the pin engaging portion 307, is formed in approximately the same manner as in the first embodiment (that is, the pin engaging portion 307 is formed in the same manner as in the first embodiment, and this one end 301-2 has a composite shape including a part of the shape of the first embodiment).
[0048] The rotation restricting engaged portion 33 is formed at one end 301-2 of the hook 3 on one end side of the spring member arrangement portion 20T so as to be able to engage with the hook rotation restricting engaging portion 242 of the stopper 24. In this case, the rotation restricting engaged portion 33 is formed in the shape of a rectangular inclined surface in a plan view (a surface sloping downward from one end of the one end 301-2 to one end of the one side 303 of the hook 3) between one end of the one side 303 and one end of the one end 301-2 of the hook 3 so that the rotation restricting engaging portion 242 of the stopper 24 can engage with it (i.e., so as to come into contact with the protruding end of the rectangular flat plate) when the locking claw 31 of the hook 3 protrudes from the hook assembly portion 20 to a predetermined protruding state, and so as to be able to release the engagement with the rotation restricting engaging portion 242 of the stopper 24 (i.e., so as to move away from the protruding end of the rectangular flat plate) when the locking claw 31 of the hook 3 is pressed and rotated toward the hook assembly portion 20.
[0049] The spring bearing portion 34 is formed at one end 301-2 of the hook 3 so as to protrude toward the other end side of the spring member arrangement portion 20T. In this case, the spring bearing portion 34 extends from approximately half of the other end side of the one end 301-2 of the hook 3 into an elongated trapezoidal cross section, and each face forming the tip end surface and peripheral surface is an approximately flat quadrangle, and the plane facing the spring bearing portion 241 of the stopper 24 of the spring member arrangement portion 20T is parallel to one side portion 303 of the hook 3 or is slightly inclined from parallel to one end 301-2 of the hook 3; in this case, it is the latter, and this face serves as a spring bearing for the coil spring 5.
[0050] 11(a), the coil spring 5 is interposed between the spring receiving portion 241 of the stopper 24 of the spring member disposing portion 20T and the spring receiving portion 34 of the hook 3. In this manner, the engagement between the rotation restricting engaging portion 242 of the stopper 24 and the rotation restricting engaged portion 33 of the hook 3 restricts the rotation of one end 301-2 of the hook 3 toward the other side 202 of the groove, and the coil spring 5 is compressed between the spring receiving portions 241, 34, so that, as described above, in the normal state (that is, unless the locking claw 31 of the hook 3 is pressed toward the one side 201 of the groove as shown in FIG. 11(b)), the locking claw 31 of the hook 3 elastically protrudes from the one side 201 of the groove of the shaft to the outside of the one side 201 of the groove in a predetermined protruding state. FIG. 11(c-1) illustrates an example in which the thicknesses of the two members P1 and P2 are large, and FIG. 11(c-2) illustrates an example in which the thicknesses of the two members P1 and P2 are small.
[0051] Even in this case, it can be used in the same manner as the first embodiment, and the same effects as those of the first embodiment can be achieved.
[0052] 12 to 15 show a third embodiment. In this embodiment (one-touch fastener F3), the configurations of the spring member arrangement portion 20T-3 and the hook 3 differ from those of the first embodiment. In the description of this embodiment, the same reference numerals as in the first embodiment are used for the components common to the first embodiment, and redundant explanations will be omitted, while new reference numerals are used for the components different from the first embodiment, and additional explanations will be provided.
[0053] 12, spring member arrangement portion 20T-3 is formed in a generally cylindrical shape with one end opening to the tip surface of shaft 2 on the tip side of groove 20, and the other end forming a bottom so that coil spring 5 can be inserted axially between the inner surfaces of the pair of split shafts 21, 21. Stopper 25 is disposed at the bottom of the other end of spring member arrangement portion 20T-3.
[0054] 13, the stopper 25 is made of a flat plate that forms the spring receiving portion 251 of the coil spring 5 and that engages with a convex portion 354 of one end 301-3 of the hook 3 (described later) to form a hook rotation restricting engagement portion 253. In this case, the stopper 25 is made of a circular flat plate portion 251, an arc-shaped flat plate portion 252 that protrudes in an arc-like shape of a predetermined length and width from a part of the outer circumferential edge of the circular flat plate portion 251 in the direction extending outward in the diameter direction, and a U-shaped recessed edge portion 253 that is cut out in a part of the outer circumferential edge of the circular flat plate portion 251 opposite the arc-shaped flat plate portion 252 and has a predetermined length and width toward the arc-shaped flat plate portion 252. The circular flat plate portion 251 is formed so as to be able to be fitted and placed on the bottom of the spring member arrangement portion 20T-3, thereby forming the spring receiving portion 251. This arc-shaped flat plate portion 252 is formed so as to be insertable into the other side 202 of the groove of the shaft 2, and serves as an engaging portion 252 with the other side 202 of the groove. Then, this concave edge portion 253 is formed so as to be engageable with the convex portion 354 of the hook 3, and serves as a hook rotation restricting engaging portion 253.
[0055] 14 and 15(b), the hook 3 has one end 301-3 formed into a two-sided shape 35 with a V-shaped cross section so that a portion of the top 351 side can protrude a predetermined length from the other end (bottom) of the spring member arrangement section 20T-3 toward the spring member arrangement section 20T-3 when the locking claw 31 of the hook 3 is recessed in the hook assembly section 20. Additionally, one surface 352 between the top 351 of this two-sided shape 35 and one side 303 of the hook 3 is formed to be flat at the other end (bottom) of the spring member arrangement section 20T-3 when the locking claw 31 of the hook 3 protrudes a predetermined amount from the hook assembly section 20, as shown in FIGS. 14 and 15(a). The end of this one surface 352 on the side of the one side 303 of the hook 3 is formed into a convex shape 354 so that it can protrude slightly toward the spring member arrangement section 20T-3. In this case, the two faces 352, 353 of the two-face shape 35 of the one end 301-3 form a substantially right angle, and the apex 351 is rounded. In this way, when the locking claw 31 of the hook 3 protrudes to a predetermined protrusion state from the hook assembly portion 20, the one face 352 forms a plane parallel to the other end of the spring member arrangement portion 20T-3 (in other words, a plane perpendicular to the axial direction of the shaft 2) at the other end of the spring member arrangement portion 20T-3. In this case, the apex 351 does not protrude into the spring member arrangement portion 20T-3. Also, in this case, the other face 353 forms a plane parallel to the outer circumferential surface of the shaft 2 on the other side 202 of the groove, within the outer circumferential surface of the shaft 2. In addition, the convex shape 354 of one end 301-3 of the hook 3 protrudes in a small, approximately trapezoidal shape from the end on one side 303 of the one end 301-3, and the surface facing the other side 202 of the groove of the shaft 2 is parallel to the axial direction of the shaft 2 when the hook 3 protrudes to a predetermined protruding state from one side 201 of the groove of the shaft 2, and forms a hook rotation restricting engaged portion 354 that can engage with the hook rotation restricting engaging portion 253 of the stopper 25.
[0056] 12, the coil spring 5 is attached between one end of the spring member arrangement portion 20T-3 and the spring receiving portion 251 of the stopper 25 at the other end of the spring member arrangement portion 20T-3. After the coil spring 5 is mounted in the spring member arrangement portion 20T-3, a stopper 26 is provided at one end of the spring member arrangement portion 20T-3 to hold the coil spring 5 in a manner that allows it to be pressed. In this case, the stopper 26 is formed by crimping one end of the spring member arrangement portion 20T-3, i.e., the opening edge portion of the tip end surface 2T of the shaft 2. In this way, as shown in Figure 15(a), the convex shape 354 on one end 301-3 of the hook 3, i.e., the hook rotation restricting engaged portion 354, engages with the concave edge portion 253 of the stopper 25 at the other end of the spring member arranging portion 20T-3, i.e., the hook rotation restricting engaging portion 253, thereby restricting the rotation of one end 301-3 of the hook 3 toward the other side 202 of the groove, and the coil spring 5 is compressed between the stoppers 25, 26 at both ends of the spring member arranging portion 20T-3, so that, as described above, in the normal state (i.e., as long as the locking claw 31 of the hook 3 is not pressed toward the one side 201 of the groove, as shown in Figure 15(b)), the locking claw 31 of the hook 3 elastically protrudes from the one side 201 of the groove of the shaft 2 to the outside of the one side 201 of the groove to a predetermined protruding state. FIG. 15(c-1) illustrates an example in which the thicknesses of the two members P1 and P2 are large, and FIG. 15(c-2) illustrates an example in which the thicknesses of the two members P1 and P2 are small.
[0057] Even in this case, it can be used in the same manner as the first embodiment, and the same effects as those of the first embodiment can be achieved.
[0058] In the above embodiments, the hook 3 is formed in a generally plate-like shape so as to be able to fit into the hook assembly portion 20, but if the fastener F1 is formed relatively large and the hook assembly portion is formed wide, the hook may be formed in a generally block-like shape so as to be able to fit into this hook assembly portion. The spring member arrangement portions 20T, 20T-3 are formed in a generally cylindrical shape with a bottom on the tip side of the groove 20, but they may also be formed in a rectangular shape. The locking claw 31 of the hook 3 is formed to elastically engage with the edge of the other mounting hole of the two members, but the locking claw 31 of the hook 3 may also elastically engage around the edge of the other mounting hole of the two members. Even in this case, the same effects as those of the above-described embodiments can be achieved.
[0059] Furthermore, in each of the above embodiments, the coil spring 5 is used as the spring member, but a torsion spring or a leaf spring may be adopted as the spring member and operatively connected to the hook. Even in this case, the same effects as those of the above-described embodiments can be achieved.
[0060] Furthermore, in each of the above embodiments, the one-touch fasteners F1-F3 are used to join two members, but it goes without saying that they can also be applied when another member is interposed between the two members or when three or more members are stacked and joined. [Explanation of symbols]
[0061] F1 One-touch fastener 1 head 2 shafts 2T tip surface 20 Groove (hook mounting area) 201 (Ditch) One Side 202 (the other side of the groove) 20T spring member placement section 20R hook placement section 21 Split shaft 211 Bearings 22 Spring holder 23 Stopper M3 hook mechanism 3 Hooks 301 One end 302 Other end 303 One side 304 Other side 305 Side part 306 Side part 307 Stepped part (pin engagement part) 30 Shaft insertion part 31 Locking claw 32 Spring holder 4th axis 5 Spring material (coil spring) 6 Hook release function part 60 Hook release port 61 Hook release key 611 pins 612 Grip 7 Washers F2 One-touch fastener 24 Stopper 241 Spring holder 242 Hook rotation restriction engagement part 301-2 One end 33 Hook rotation restricting engaged portion 34 Spring support F3 One-touch fastener 25 Stopper 251 Spring holder 252 Engagement part 253 Hook rotation restriction engagement part 26 Stopper 301-3 One end 35 2-sided shape 351 Top 352 One Side 353 The Other Side 354 Convex (hook rotation restriction engaged part) P1 (one side) member P2 (other) member O Mounting holes
Claims
1. a hook mechanism comprising: a head; a shaft extending from the head; and a hook in a groove formed on the circumferential surface of the shaft, one end of which is rotatably supported via an axis with the other end of the hook facing the tip of the shaft and the other end facing the head, the other end of which is incorporated as a locking claw so as to be able to protrude into and out of the groove of the shaft, the hook being normally biased to rotate by a spring member within the groove of the shaft, so that the locking claw elastically protrudes from the groove of the shaft; wherein one mounting hole formed in one of at least two members is aligned with the other mounting hole formed in the other, the shaft is passed from the one mounting hole to the other mounting hole, and the locking claw of the hook is elastically engaged with or around the edge of the other mounting hole, thereby attaching one of at least two members to the other, a hook release port formed in the head in the shape of a small hole and facing the one end of the hook in the groove of the shaft; a hook release key, which is an accessory of the hook mechanism and has an elongated pin that can be inserted into the hook release port and can press the one end of the hook within the shaft; Equipped with When removing the one-touch fastener from the two components, the pin of the hook release key is passed through the hook release opening of the head and into the groove of the shaft, and the pin presses the one end of the hook, causing the locking claw of the hook to retract into the shaft and releasing the elastic engagement between the locking claw of the hook and the edge or periphery of the edge of the other mounting hole. A one-touch fastener characterized by:
2. The shaft is formed with a groove from the tip end surface toward the head, with both sides of the groove opening onto the circumferential surface of the shaft, and the shaft is composed of a pair of split shafts, and the groove forms a hook assembly portion with a spring member arrangement portion on the tip side, and the hook mechanism is formed in a substantially plate-like or block-like shape with one side disposed along one side of the groove that opens onto the circumferential surface of the shaft so as to be fittable into the hook assembly portion, and has a shaft insertion portion near one end corresponding to each of the bearings of each of the split shafts, and the other end is circular. a hook formed in an arc shape with its center closer to the one end than the shaft insertion portion and closer to the other side opposite the one side, with a locking claw extending from the one side to the other end, the hook being rotatably supported by the hook assembly portion via the shaft so that the locking claw can appear and disappear from one side of the groove; and a spring member disposed in the spring member positioning portion and operatively connected to the hook, which normally urges the one end of the hook to rotate toward the other side of the groove, causing the locking claw to elastically protrude outward from one side of the groove.
3. 3. The one-touch fastener according to claim 2, wherein a coil spring is used as the spring member, and the spring member arrangement portion is opened at the tip end of the groove in a direction perpendicular to the axial direction of the shaft and perpendicular to the space between the pair of bearings, with the other end of the groove being open on the circumferential surface of the shaft so that the coil spring can be inserted therethrough, and one end of the groove is formed as a spring receiving portion for the coil spring, with one end of the groove being a bottom near the circumferential surface of the shaft and formed as a spring receiving portion for the coil spring, and is formed in a substantially bottomed cylindrical shape, and one end of the hook protrudes toward the other end side of the spring member arrangement portion to form a spring receiving portion for the coil spring, and the coil spring is interposed between the spring receiving portion of the spring member arrangement portion and the spring receiving portion of the hook, and a stopper is provided at the other end of the spring member arrangement portion so that the spring receiving portion of the hook can come into impact with it, and engagement between the spring receiving portion of the hook and the stopper restricts rotation of one end of the hook toward the other side of the groove, and the coil spring is compressed between the spring receiving portions.
4. 4. The one-touch fastener according to claim 3, wherein the stopper at the other end of the spring member arrangement portion is formed by crimping the other end of the spring member arrangement portion.
5. A coil spring is used as the spring member, and the spring member arrangement portion is formed on the tip end side of the groove in a direction perpendicular to the axial direction of the shaft and perpendicular to the space between the pair of bearings, with the other end of the groove being open on the circumferential surface of the shaft so that the coil spring can be inserted therethrough, and one end of one side of the groove is formed as a bottom near the circumferential surface of the shaft, so that the groove is formed into a substantially cylindrical shape with a bottom, and a stopper is arranged on the bottom of one end of the spring member arrangement portion, the stopper having a spring receiving portion fitted to the bottom and a hook rotation restricting engaging portion extending from the spring receiving portion along one side of the groove so as to be able to engage with one end of the hook, and one end of the hook is forwardly attached to the other end side of the spring member arrangement portion. A one-touch fastener as described in claim 2, wherein a spring receiving portion of the coil spring is formed protruding toward the other end side of the spring member arrangement portion, and a rotation-restricting engaged portion is formed at one end of the hook on one end side of the spring member arrangement portion so as to be engageable with the hook rotation-restricting engaging portion, the coil spring is interposed between the spring receiving portion of the stopper of the spring member arrangement portion and the spring receiving portion of the hook, and the rotation of one end of the hook toward the other side of the groove is restricted by the engagement between the rotation-restricting engaging portion of the stopper and the rotation-restricting engaged portion of the hook, and the coil spring is compressed between the spring receiving portions.
6. A coil spring is used as the spring member, and the spring member arrangement portion of the groove is formed in a generally bottomed cylindrical shape with one end opening at the tip end surface of the shaft on the tip end side of the groove, so that the coil spring can be inserted between the inner surfaces of the pair of split shafts in the axial direction, with the other end serving as the bottom. One end of the hook is formed in a two-sided shape with a V-shaped cross section so that a part of the top side can protrude from the other end of the spring member arrangement portion to the spring member arrangement portion when the locking claw of the hook is sunk into the hook assembly portion, and one surface between the top and one side of the hook forms a flat surface at the other end of the spring member arrangement portion when the locking claw of the hook protrudes from the hook assembly portion, and the end of one side of the hook on the one surface is formed in a flat surface at the other end of the spring member arrangement portion and is connected to the hook.
3. A one-touch fastener as described in claim 2, wherein a stopper consisting of a flat plate is disposed at the other end of the spring member arrangement portion, the stopper being formed in a convex shape so as to be able to protrude slightly toward the spring member arrangement portion, the stopper forming a spring receiving portion for the coil spring and engaging with the convex shape of one end of the hook to form a portion for restricting the rotation of the hook, the coil spring being attached between the stopper at the other end and one end of the spring member arrangement portion, and a stopper for holding the coil spring in a manner that allows it to be pressed is provided at one end of the spring member arrangement portion, and the engagement between the convex shape of one end of the hook and the stopper at the other end of the spring member arrangement portion restricts the rotation of one end of the hook in the direction of the other side of the groove, and the coil spring is compressed between the stoppers.
7. 7. The one-touch fastener according to claim 6, wherein the stopper at one end of the spring member placement portion is formed by crimping one end of said spring member placement portion.
8. 8. The one-touch fastener according to claim 1, wherein the head is formed in a disk shape and the shaft is formed in a cylindrical shape.
Citation Information
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