Male snap button

Abstract

To provide a male type snap button which can expand a range of an applicable fabric thickness and can reduce a load required in attaching to a fabric.SOLUTION: A male type snap button 10 including an engaging part 11 for detachably engaging a female type snap button includes a shell 20 which is the engaging part 11, and an eyelet 30 in which one end side in an axial direction is assembled to the inside of the shell 20 and the other end side in the axial direction protrudes to the outside of the shell 20. The eyelet 30 includes a cylindrical fastening part 12 which protrudes to the outside of the shell 20 and is a part on the other end side in the axial direction. While the male type snap button 10 is attached to a fabric F1, only the shell 20 that is the engaging part 11 is exposed on one surface side of the fabric F1. The fastening part 12 is plastically deformed after penetrating the fabric F1 in attaching the male type snap button 10 to the fabric F1.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a male snap button, and more particularly to a male snap button that releasably engages with a female snap button. [Background technology]

[0002] Male snap buttons (also called studs) and female snap buttons (also called sockets), which can be connected and disconnected from each other, are widely used in clothing, bags, etc. Male snap buttons generally include a male snap body including an engagement portion for attaching and detaching the male snap body to the fabric of clothing, etc., and a rivet (button attachment member) for attaching the male snap body to the fabric of clothing, etc. An example of such a male snap button is disclosed in KR101180898B1 (Patent Document 1). The male snap button of Patent Document 1 includes a male snap body forming an engagement portion and a rivet, and the male snap body is attached to the fabric by passing the shank of the rivet through the fabric and then tightening the shank inside the male snap body.

[0003] As described above, in conventional male snap buttons, the male snap body is attached to the fabric by tightening the rivet shaft within the male snap body as required. In this case, the tightening amount of the rivet shaft varies depending on the fabric thickness, so there is a limit to the fabric thickness at which the male snap body can be securely attached. In other words, rivets with shaft lengths that differ for each fabric thickness are required. Furthermore, a relatively large load is required to tighten the rivet shaft, and this load may cause unintended deformation or variation in the male snap body when it is attached to the fabric. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] KR101180898B1 Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention has been made in consideration of the above-mentioned problems, and its object is to provide a male snap button that can be used with a wider range of fabric thicknesses and that reduces the load required when attaching it to the fabric. [Means for solving the problem]

[0006] In order to solve the above problems, according to the present invention, there is provided a male snap button having an engagement portion that can be detachably engaged with a female snap button, the engagement portion being a shell, and an eyelet having one axial end side assembled inside the shell and the other axial end side protruding to the outside of the shell, the eyelet including a tubular fastening portion that is the portion on the other axial end side that protrudes to the outside of the shell, wherein when the male snap button is attached to a fabric, only the shell serving as the engagement portion is exposed on one side of the fabric, and the fastening portion is plastically deformed after penetrating the fabric when the male snap button is attached to the fabric.

[0007] The male snap button according to the present invention is constructed by combining two parts, a shell and an eyelet, in advance. The shell is an engaging part that is detachably engaged with the engaged part of the female snap button. Referring to FIG. 5, when the male snap button is attached to the fabric, only the shell 20, which is the engaging part 11, is exposed on one side (upper side) of the fabric F1. In a conventional male snap button, the base part and the flange part, which are parts other than the engaging part, are exposed on one side of the fabric together with the engaging part, but in the present invention, only the engaging part appears on one side of the fabric. The eyelet includes a tubular fastening part that penetrates the fabric on the opposite side to the shell and plastically deforms it when the male snap button is attached to the fabric. Referring to FIG. 5, the fastening part 12 penetrates the fabric F1 downward on the opposite side to the shell 20, and then is crimped radially outward in a C-shape, and the end of the fastening part 12 is received by a washer 40. The tubular fastening part allows the amount of plastic deformation (crimping) of the fastening part to be relatively flexibly adjusted according to the fabric thickness, so that the range of fabric thickness to which the male snap button can be attached can be expanded. In addition, the load required to tighten the tubular fastening portion is smaller than the load required to tighten the rivet shaft, which reduces the possibility of unintended deformation or variation in the male snap button of the present invention when it is attached to fabric.

[0008] In the present invention, the shell and eyelets can be made from metals such as, but not limited to, aluminum, aluminum alloys, copper, and copper alloys.

[0009] In one embodiment of the present invention, the shell includes a disk portion, a circumferential side portion extending from the periphery of the disk portion toward the fastening portion, and an opening opening in the axially opposite direction to the disk portion, and the circumferential side portion is inclined at an angle less than 90 degrees and not less than 45 degrees, preferably not more than 86 degrees and not less than 78 degrees, with respect to the disk portion. In the shell, the disk portion and the circumferential side portion define an engagement portion. By inclining the circumferential side portion at the above angle with respect to the disk portion, the outer diameter of the circumferential side portion decreases from the disk portion side to the side away from the disk portion, and a large diameter portion (see 22a in FIG. 3) with the largest outer diameter is generated on the disk portion side. By hooking the large diameter portion of the engagement portion on a spring or the like of the engaged portion of the female snap button, the engagement portion can be engaged with the engaged portion of the female snap button.

[0010] In one embodiment of the present invention, the eyelet includes a cylindrical eyelet body and a folded-back portion folded back from one axial end of the eyelet body toward the radially outward and the other axial end of the eyelet body. The folded-back portion of the eyelet serves to support the disk portion of the shell from the inside.

[0011] In one embodiment of the present invention, the ratio of the axial length of the male snap button to the axial length of the shell is 1.5 to 3: 1. That is, by setting the ratio of H:h in Fig. 3 to 1.5 to 3: 1, it is possible to ensure the thickness required for the engagement part while fully securing the range of fabric thickness that the fastening part can accommodate.

[0012] In one embodiment of the present invention, the peripheral portion of the shell includes a pressing portion extending radially inward from the other axial end side, and the folded portion of the eyelet is accommodated between the disk portion of the shell and the pressing portion. Also, in one embodiment of the present invention, the folded portion of the eyelet includes a pressed portion extending radially outward from the other axial end side, and the pressing portion of the shell presses against the pressed portion. Effect of the Invention

[0013] In the male snap button of the present invention, the cylindrical fastening part at the other end of the eyelet, one end of which is pre-assembled inside the shell, allows the amount of plastic deformation (crimping) when attaching the male snap button to fabric to be adjusted relatively flexibly according to the fabric thickness. This makes it possible to expand the range of fabric thicknesses to which the male snap button can be attached. In addition, the load required to crimp the fastening part is smaller than the load required to crimp the shank of the rivet. This makes it possible to reduce the possibility of unintended deformation or variation occurring in the male snap button of the present invention when it is attached to fabric. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a perspective view showing a male snap button according to one embodiment of the present invention. [Diagram 2] FIG. 2 is a side view of the male snap button of FIG. [Diagram 3] FIG. 3 is a cross-sectional view of the male snap button of FIG. [Figure 4] FIG. 4 is a bottom view of the male snap button of FIG. [Diagram 5] FIG. 5 is a cross-sectional view showing a male snap button attached to a fabric. [Figure 6] FIG. 6 is a cross-sectional view showing a state in which the male snap button is engaged with the female snap button. [Figure 7] FIG. 7 is a cross-sectional view of a male snap button according to a first modified example of the present invention. [Figure 8] FIG. 8 is a cross-sectional view showing a state in which a male snap button according to the first modified example is attached. [Figure 9] FIG. 9 is a cross-sectional view of a male snap button according to a second modified example of the present invention. [Figure 10] FIG. 10 is a cross-sectional view showing a state in which a male snap button according to the second modified example is attached. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, an embodiment of the present invention will be described with reference to the drawings, but the present invention is not limited to such an embodiment. FIG. 1 is a perspective view of a male snap button 10 according to one embodiment of the present invention. FIGS. 2 to 4 are a side view, a cross-sectional view, and a bottom view of the male snap button 10. The male snap button 10 is composed of two parts, a shell 20 and an eyelet 30 that is previously assembled integrally with the shell 20. Both the shell 20 and the eyelet 30 are made of metal such as brass, and are formed by drawing a metal plate. In the following description of the male snap button 10, the top and bottom are based on the paper plane of FIGS. 2 and 3. Note that in the paper plane of FIGS. 2 and 3, the top is one axial end side, and the bottom is the other axial end side.

[0016] The shell 20 is cylindrical with a top and includes a disk portion 21 that corresponds to the top plate of the cylinder, and a peripheral side portion 22 that corresponds to the side wall of the cylinder extending downward from the periphery of the disk portion 21, i.e., the radially outer end. The peripheral side portion 22 includes an annular pressing portion 23 that extends slightly radially inward at its lower end. The radially inner end of the pressing portion 23 defines an opening 24. The internal space S of the shell 20 opens downward to the outside through the opening 24. The pressing portion 23 is curved so that its cross section is slightly convex downward. The disk portion 21 is a perfect circle, but may be an ellipse.

[0017] The circumferential side portion 22 is inclined at an angle θ with respect to the disk portion 21. The angle θ is smaller than 90 degrees and equal to or greater than 45 degrees, and preferably equal to or less than 86 degrees and equal to or greater than 78 degrees. In this embodiment, the angle θ is approximately 83 degrees. As a result, the outer diameter of the circumferential side portion 22 gradually decreases from top to bottom. The circumferential side portion 22 has a large diameter portion 22a at the approximate upper end where the outer diameter is maximum, and a small diameter portion 22b at the base end of the pressing portion 23 at the lower end side where the outer diameter is minimum. In this embodiment, the circumferential side portion 22 excluding the pressing portion 23 has a linear cross section, and it can also be said that the section between the large diameter portion 22a and the small diameter portion 22b is linear.

[0018] The disk portion 21 and the peripheral side portion 22 of the shell 20 define the engaging portion 11 of the male snap button 10. In other words, the disk portion 21 and the peripheral side portion 22 of the shell 20 are the engaging portion 11. The engaging portion 11 is a portion that is attached to and detached from the engaged portion 51 of the female snap button 50 (see FIG. 6). In this embodiment, the entire portion of the male snap button 10 attached to the fabric F1 (see FIG. 5) that is exposed above the fabric F1 becomes the engaging portion 11. In other words, when the male snap button 10 is attached to the fabric F1, only the disk portion 21 and the peripheral side portion 22 of the shell 20, which are the engaging portion 11, are exposed on the upper surface side of the fabric F1.

[0019] The eyelet 30 comprises a cylindrical eyelet body 31 and a folded portion 32 that is folded diagonally downward and radially outward from the upper end of the eyelet body 31. The folded portion 32 includes an annular pressed portion 33 that extends slightly radially outward from its lower end almost horizontally. The eyelet 30 is directly assembled concentrically to the shell 20 without any other parts. The axis of the shell 20 and the eyelet body 31 is the axis of the male snap button 10.

[0020] In the male snap button 10, the upper part of the eyelet body 31, the folded part 32 and the pressed part 33 are housed in the internal space S of the shell 20. In contrast, the lower part of the eyelet body 31 is exposed downward from the opening 24 of the shell 20. In this specification, the part of the eyelet body 31 exposed downward from the opening 24 of the shell 20 is called the fastening part 12. The fastening part 12 is a part that is plastically deformed into a curved shape, i.e., swaged, when the male snap button 10 is attached to the fabric F1 (see FIG. 5) of clothing or the like. In the male snap button 10, the upper end, which is the boundary part between the eyelet body 31 and the folded part 32, contacts the lower surface of the disk part 21 of the shell 20. In addition, the pressed part 33 of the eyelet 30 is pressed by the pressing part 23 of the shell 20. Furthermore, the radially outer end of the pressed portion 33 of the eyelet 30 contacts or is close to the vicinity of the base end of the pressing portion 23 on the inner surface of the peripheral side portion 22 of the shell 20. In this way, the folded portion 32 including the pressed portion 33 of the eyelet 30 is restrained within the shell 20, and the shell 20 and the eyelet 30 are integrated.

[0021] 5 is a cross-sectional view showing a male snap button 10 attached to fabric F1 of clothing or the like. The male snap button 10 is attached to fabric F1 by placing a washer 40 below the fabric F1. The washer 40 includes a cylindrical portion 41, a base portion 42 extending radially inward from the upper end of the cylindrical portion 41, and a flange portion 43 extending horizontally radially outward from the lower end of the cylindrical portion 41 and then curving upward and radially inward in a C-shape. The base portion 42 has an opening 44 in the center. The opening 44 is larger than the outer diameter of the fastening portion 12 of the male snap button 10.

[0022] When attaching the male snap button 10 to the fabric F1, the fastening portion 12 is passed through the fabric F1 from top to bottom, and then through the opening 44 of the washer 40. The lower end of the fastening portion 12 that has passed through the fabric F1 is plastically deformed (crimped) by a die (not shown) so as to be curved radially outward and upward. At this time, the end of the crimped fastening portion 12 is received by the base 42 of the washer 40. This prevents the crimped end of the fastening portion 12 from coming into contact with the fabric F1 and damaging the fabric F1. In addition, since the male snap button 10 is integrally provided with the fastening portion 12, it can be attached to the fabric F1 without using a separate button attachment member such as a rivet. Note that the washer 40 is not a button attachment member, but an auxiliary member for preventing the crimped end of the fastening portion 12 from coming into contact with the fabric F1.

[0023] The fastening portion 12 of the male snap button 10 can flexibly respond to various thicknesses of the fabric F1 by changing the amount of fastening. Therefore, the range of thicknesses of the fabric F1 to which the male snap button 10 can be attached can be expanded. Furthermore, the force required to deform the fastening portion 12 when attaching the male snap button 10 to the fabric F1 is smaller than the force required to fasten the shank of a rivet. Therefore, when attaching the male snap button 10 to the fabric F1, there is almost no possibility that a part of the male snap button 10 will be deformed by the fastening load of the fastening portion 12. Therefore, the eyelet 30 can be directly assembled to the shell 20 without using other parts such as a buffer material for the fastening load.

[0024] 3, the ratio of the axial length H of the male snap button 10 to the axial length h of the engagement portion 11 of the male snap button 10, i.e., the shell 20, is preferably set to 1.5 to 3:1. This makes it possible to ensure the necessary thickness for the engagement portion 11 while fully securing the range of thicknesses of the fabric F1 that the fastening portion 12 can accommodate.

[0025] FIG. 6 is a cross-sectional view showing a state in which the male snap button 10 is engaged with the female snap button 50. The female snap button 50 is an example of a female snap button to which the male snap button 10 is attached and detached. In FIG. 6, the male snap button 10 is shown upside down from FIG. 3, and for convenience, it is shown in a state in which it is not attached to the fabric. In FIG. 6, the female snap button 50 is attached to the fabric F2 by a rivet 60. The rivet 60 has a shaft portion 61, and the female snap button 50 is attached to the fabric F2 by tightening the shaft portion 61 inside the female snap button 50. The female snap button 50 has an engaged portion 51 that detachably receives the engaging portion 11 of the male snap button 10. A ring-shaped or C-shaped spring 52 is housed in the engaged portion 51. In the engaged state of Figure 6, the large diameter portion 22a of the engaging portion 11 of the male snap button 10 passes beyond the axial midpoint of the spring 52 of the female snap button 50 (the point where the inner diameter of the spring 52 is smallest), thereby causing the engaging portion 11 to engage with the engaged portion 51 of the female snap button 50.

[0026] 7 and 8 show a male snap button 10H according to a first modified example of the present invention. The male snap button 10H according to the first modified example differs from the male snap button 10 according to one embodiment of the present invention in that a flange 25 that protrudes in the circumferential direction (radially outward) of the disk portion 21 is provided at the end of the peripheral side portion 22 of the shell 20 opposite (lower) the disk portion 21; the other parts are substantially the same. The flange 25 is curved in a C-shape in cross section, and encases the pressed portion 33 of the eyelet 30.

[0027] By providing the flange 25, after the male snap button 10H is attached to a thick fabric, the fabric around the male snap button 10H can be prevented from rising due to elasticity and covering a part of the peripheral side portion 22. As a result, the male snap button and the female snap button can be more securely engaged. Also, when attaching the male snap button 10H to a thin fabric, the contact area of ​​the male snap button 10H with the fabric increases, dispersing the load on the fabric and making the fabric less likely to tear.

[0028] 9 and 10 show a male snap button 10I according to a second modification of the present invention. The male snap button 10I according to the second modification differs from the male snap button 10 according to the first modification of the present invention in that the fastening portion 12 has an eyelet 30I that is a closed, hollow, substantially cylindrical shape without an opening, tapering toward the lower tip. Furthermore, when attaching to the fabric, an attachment member 40I having a shell 48 and an eyelet 49 is used instead of the washer 40 as an attachment member. The other parts are substantially the same. The second modification of the present invention does not necessarily have to have the flange 25. By forming the eyelet 30I in a shape without an opening, it is possible to prevent the curved plastically deformed portion of the eyelet 30I from touching and scratching the skin after the male snap button 10I is attached to the fabric. Also, by using the attachment member 40I having the shell 48 and the eyelet 49, it is possible to prevent the curved plastically deformed portion of the eyelet 30I from physically touching the skin. Also, the shell 48 of the attachment member 40I can be given decorative features such as logos, painting, plating, etc., to impart an excellent aesthetic feel. [Explanation of symbols]

[0029] 10, 10H, 10I Male snap button 11 Engagement part 12 Fastening 20 Shell 21 Disc section 22 Side 23 Holding part 24 Aperture 25 Flange θ Inclination angle of the peripheral side relative to the disc part S-shell interior space 30, 30I eyelet 31 Eyelet body 32 Folded section 33 Pressed part F1 Fabric 40 Washer 40I Mounting material 48 Shell 49 Eyelet 50 Female snap button 51 Engaged part 52 Spring

Claims

1. A male snap button (10) having an engagement portion (11) for releasably engaging with a female snap button (50), the engaging portion (11) is a shell (20); and an eyelet (30) whose one axial end side is assembled inside the shell (20) and whose other axial end side protrudes outside the shell (20), The shell (20) and the eyelet (30) are made of metal; The eyelet (30) includes a tubular fastening portion (12) which is a portion on the other axial end side that protrudes to the outside of the shell (20), The eyelet (30) includes a cylindrical eyelet body (31) and a folded-back portion (32) folded back from one axial end of the eyelet body (31) toward the radially outward and other axial end, The shell (20) includes a disk portion (21), The boundary between the eyelet body (31) and the folded-back portion (32) is an end portion on one axial end side that contacts the disk portion (21) of the shell (20), When the male snap button (10) is attached to the fabric (F1), only the shell (20) which is the engagement portion (11) is exposed on one side of the fabric (F1); The male snap button is characterized in that the fastening portion (12) is plastically deformed after penetrating the fabric (F1) when the male snap button (10) is attached to the fabric (F1).

2. 2. A male snap button as claimed in claim 1, wherein the shell (20) includes a peripheral side portion (22) extending from the periphery of the disc portion (21) towards the fastening portion (12) and an opening (24) opening in the axially opposite direction to the disc portion (21), and the peripheral side portion (22) is inclined at an angle (θ) less than 90 degrees and equal to or greater than 45 degrees with respect to the disc portion (21).

3. 3. A male snap button according to claim 2, wherein said peripheral side portion (22) is inclined at an angle (θ) with respect to said disk portion (21) which is less than 86 degrees and greater than 78 degrees.

4. A male snap button as claimed in any one of claims 1 to 3, wherein the ratio of the axial length (H) of the male snap button (10) to the axial length (h) of the shell (20) is 1.5 to 3:

1.

5. 3. A male snap button as described in claim 2, wherein the peripheral side portion (22) of the shell (20) includes a pressing portion (23) extending radially inward from the other axial end side, and the folded-back portion (32) of the eyelet (30) is accommodated between the disk portion (21) of the shell (20) and the pressing portion (23).

6. 6. A male snap button as described in claim 5, wherein the folded portion (32) of the eyelet (30) includes a pressed portion (33) extending radially outward from the other axial end side, and the pressing portion (23) of the shell (20) presses against the pressed portion (33).

7. 4. A male snap button as claimed in claim 2 or 3, wherein a flange (25) protruding in the circumferential direction of the disc portion (21) is provided at an end of the peripheral side portion (22) of the shell (20) opposite the disc portion (21).

8. The male snap button according to any one of claims 1 to 7, wherein the eyelet (30) has a hollow, generally cylindrical shape with no opening, with the fastening portion (12) tapering toward the tip on the other axial end side.

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