MALE MEMBER OF SNAP FASTENER AND SNAP FASTENER

Abstract

This male member of a snap fastener is provided with a first portion and a second portion, wherein the first portion is composed of a plastic material, and the second portion is composed of a metal portion. In addition, the male member of the snap fastener has an engaging protrusion part working together with an eyelet of a female member, and a cover which at least partially covers the engaging protrusion part is provided to a side of the male member, the side facing the female member.

Claims

1. A male member of a snap fastener, the male member comprising: a first portion made of a plastic material; and a second portion made of a metallic material and having a ring-like washer shape; wherein the second portion is configured to be disposed between the first portion and a holding unit that is configured to hold the male member on a support, and wherein the holding unit is configured to contact a side of the second portion, the side facing a female member of the snap fastener when the male member is engaged with the female member.

2. The male member of the snap fastener according to claim 1, wherein the first portion includes an engagement protruding portion that cooperates with an eyelet of the female member of the snap fastener.

3. The male member of the snap fastener according to claim 2, wherein the engagement protruding portion has flexibility.

4. The male member of the snap fastener according to claim 2, wherein the engagement protruding portion is configured to be deformed so as to expand.

5. The male member of the snap fastener according to claim 1, wherein the second portion is sandwiched between the holding unit and the first portion.

6. The male member of the snap fastener according to claim 1, wherein the holding unit is a rivet.

7. A snap fastener including the male member according to claim 1 and the female member as a counterpart of the male member, wherein a wall of the female member that forms an eyelet into which the engagement protruding portion of the male member is inserted has no flexibility.

8. The snap fastener according to claim 7, wherein the wall is made of a metallic material.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0038] FIG. 1 is an exploded cross-sectional view of a snap fastener including a male member according to a first embodiment of the present invention.

[0039] FIG. 2 is a cross-sectional view illustrating an open state of the snap fastener in FIG. 1 attached to a fabric.

[0040] FIG. 3 is a cross-sectional view of the snap fastener in FIG. 2 in a closed state.

[0041] FIG. 4 is an exploded cross-sectional view of a snap fastener including a male member according to a second embodiment of the present invention.

[0042] FIG. 5 is a cross-sectional view illustrating an open state of the snap fastener in FIG. 4 attached to a fabric.

[0043] FIG. 6 is a cross-sectional view of the snap fastener in FIG. 5 in a closed state.

DESCRIPTION OF EMBODIMENTS

First Embodiment

[0044] First, a first embodiment of a male member of a snap fastener according to the present invention and a snap fastener including the male member are described with reference to FIGS. 1 to 3.

[0045] The snap fastener illustrated in FIGS. 1 to 3 includes a male member 10 and a female member 12 as a counterpart of the male member 10. The male member 10 includes a main body (a first portion) 10A and a cover (a second portion) 11. The main body 10A is made of a plastic material such as polyoxymethylene (POM). The cover 11 and the female member 12 are made of a metallic material such as brass. The snap fastener includes rivets (holding units) 14, 16 used to attach the male member 10 and the female member 12 to fabrics (supports) 18, 20, respectively.

[0046] The main body 10A of the male member 10 includes an engagement protruding portion 22 that cooperates with an eyelet 24 of the female member 12. The engagement protruding portion 22 has a sleeve shape and includes a bulging portion 26 on an outer surface in a radial direction. The bulging portion 26 cooperates with a wall 28 that forms the eyelet 24 for snap engagement of the male member 10 and the female member 12. Further, the engagement projection 22 has flexibility and can elastically expand and deform.

[0047] The cover 11 serves to attach the main body 10A to the fabric 18 since a rivet shaft portion 15 of the rivet 14 abuts against the cover 11 and the cover 11 abuts against the main body 10A of the male member 10. In other words, the cover 11 is sandwiched between the rivet shaft portion 15 and the main body 10A. Thus, since the rivet shaft portion 15 does not directly abut against the main body 10A, it is possible to prevent the main body 10A from damages due to the abutment of the rivet shaft portion 15.

[0048] Since the cover 11 is made of a metallic material, it is less susceptible to be damaged than a plastic material, particularly for mechanical damages such as scratches that may occur during use and washing. Therefore, the main body 10A of the male member 10 can be protected from being damaged by the cover 11.

[0049] The cover 11 may be supplied as a separate component or may be fixed to the main body 10A of the male member 10 by, for example, bonding and welding.

[0050] Since the main body 10A of the male member 10 is made of a plastic material, the engagement protruding portion 22 of the main body 10A is easily moved radially inward, particularly during snap engagement. Further, it is easy to provide the bulging portion 26 on the engagement protruding portion 22 by the injection molding process.

[0051] Further, in the present embodiment, since the cover 11 has a ring-like washer shape, it is easy to manufacture the cover 11.

[0052] Further, since the main body 10A of the male member 10 can have sufficient flexibility to ensure an easy snap engagement procedure, the female member 12 does not need to have flexibility for the snap engagement procedure. Therefore, it is easy to manufacture the female member 12.

[0053] As illustrated in FIGS. 2 and 3, the snap fastener in the present embodiment has an extremely flat structure since attachment of a snap is performed at an edge of the snap rather than a center of the snap. Thus, there is no need to provide, in height of the snap, space for both snap operation and attachment of the male member and the female member to each piece of material made in the same area as the snap operation.

[0054] Finally, it should be noted that the rivets 14, 16 are attachment units but not parts or members of the snap fastener.

[0055] Features of the present invention disclosed in the above specification, claims, and drawings may be essential to realization of the present invention in various individual embodiments and any combination of these embodiments.

Second Embodiment

[0056] First, a second embodiment of a male member of a snap fastener according to the present invention and a snap fastener including the male member are described with reference to FIGS. 4 to 6.

[0057] The snap fastener illustrated in FIGS. 4 to 6 includes the male member 10 and the counterpart female member 12 of the male member 10. The male member 10 of the present embodiment is made of a plastic material such as polyoxymethylene (POM). The female member 12 of the present embodiment is made of a metal such as aluminum, brass, and steel (stainless steel), or a metal alloy. The snap fastener includes the rivets (the holding units) 14, 16 used to attach the male member 10 and the female member 12 to the fabrics (the supports) 18, 20, respectively.

[0058] The male member 10 includes an engagement protruding portion 22 that cooperates with the eyelet 24 of the female member 12. The engagement protruding portion 22 is provided in a sleeve shape or a hollow cylindrical shape such as a pipe shape, and includes the bulging portion 26 on an outer surface in a radial direction. The bulging portion 26 cooperates with the ring-shaped curved wall 28 that forms the eyelet 24 for snap engagement of the male member 10 and the female member 12.

[0059] The male member 10 includes a base 30 formed in a sleeve shape. The engagement protruding portion 22 is concentrically disposed around the base 30. Further, as viewed from a side facing the female member 12, a ring-shaped space 32 is arranged between the base 30 and the engagement protruding portion 22. The space 32 is provided so that the engagement protruding portion 22 is movable radially inward at a time of snap engagement with the female member 12.

[0060] The male member 10 is provided with a cover 34 at least partially covering the engagement protruding portion 22 on the side facing the female member 12 when the male member 10 is engaged with the female member 12. The cover 34 includes an outer flange 36 disposed radially outward, an inner flange 38 disposed radially inward, and a side wall 40 axially connecting the outer flange 36 and the inner flange 38. The cover 34 is formed in a sleeve shape. The cover 34 may have a hollow cylindrical shape such as a pipe shape.

[0061] The outer flange 36 of the cover 34 is held so as to abut against one axial end surface (an upper end surface in FIG. 4) of the base 30. Further, the outer flange 36 is expanded radially outward beyond the space 32 to at least partially cover the engagement protruding portion 22. A gap 42 is provided between the outer flange 36 and one axial end surface (an upper end surface in FIG. 4) of the engagement protruding portion 22. Accordingly, the outer flange 36 and the engagement protruding portion 22 are not in direct contact with each other. The gap 42 is caused due to the matter that the base 30 is formed higher than the engagement protruding portion 22. Accordingly, the outer flange 36 of the cover 34 does not interfere or prevent movement of the engagement protruding portion 22 during snap engagement. The movement of the engagement protruding portion 22 during snap engagement is a radial inward movement.

[0062] The rivet 14 abuts against the inner flange 38 of the cover 34 on the side facing the female member 12. The inner flange 38 abuts against a radially inner part of the male member 10. Thus, the inner flange 38 serves to attach the male member 10 to the fabric 18. Since the inner flange 38 is disposed between the rivet 14 and the male member 10 so that the rivet 14 does not directly abut against the male member 10, it is possible to prevent the radially inner part of the male member 10 from damages due to the abutment of the rivet 14.

[0063] The side wall 40 of the cover 34 is provided in a sleeve shape. Radially outer circumferential surface of the side wall 40 abuts against the base 30 of the male member 10. The side wall 40 functions as a blocking unit used to prevent movement of the male member in a lateral direction with respect to an engaging direction by abutting against the base 30, and the side wall 40 serves to fix the male member 10 to the fabric 18.

[0064] The cover 34 of the present embodiment is made of a metal such as aluminum, brass, and steel (stainless steel) or a metal alloy. Therefore, it is less susceptible to be damaged than a plastic material, particularly for mechanical damages such as scratches that may occur during use and washing. Therefore, the male member 10 including the base 30, and particularly the engagement protruding portion 22, can be protected from being damaged by the cover 34.

[0065] Further, the cover 34 covers an upper part of the space 32 of the male member 10 to protect the space 32. As a result, it is possible to prevent any foreign matter from falling into the space 32, thereby preventing snap engagement of the engagement protruding portion 22 from being hindered.

[0066] In addition, the metallic cover 34 contributes to achieving an attractive appearance of the snap fastener. Since it is easy to apply each decorative element to a metal surface, design, logo, and other aesthetic feature can be easily assembled on the cover 34. Further, since the space 32 is covered by the cover 34 and cannot be seen, visual appearances of the male member 10 and the snap fastener can be improved.

[0067] The cover 34 may be supplied as a separate component or may be fixed to the male member 10 by, for example, bonding and welding.

[0068] The snap fastener illustrated in the figures has a circular profile in a top view and a bottom view.

[0069] As illustrated in FIGS. 5 and 6, the snap fastener in the present embodiment has an extremely flat structure since attachment of a snap is performed at an edge of the snap rather than a center of the snap. Thus, there is no need to provide, in height of the snap, space for both snap operation and attachment of the male member and the female member to each piece of material made in the same area as the snap operation.

[0070] Finally, it should be noted that the rivets 14, 16 are attachment units and not parts or members of the snap fastener.

[0071] Features of the present invention disclosed in the above specification, claims, and drawings may be integral to realizations of the present invention in various embodiments individually as well as in any combination.

[0072] The present application is based on German Federal Communications Patent Application (102016012899.2) filed on Oct. 28, 2016, and German Federal Communications Patent Application (102016012901.8) filed on Oct. 28, 2016, contents of which are incorporated herein by reference.

TABLE-US-00001 DESCRIPTION OF REFERENCE NUMERALS (First Embodiment) 10 male member 10 main body (first portion) 11 cover (second portion) 12 female member 14, 16 rivet (holding unit) 15 rivet shaft portion 18, 20 fabric (support) 22 engagement protruding portion 24 eyelet 26 bulging portion 28 wall (Second Embodiment) 10 male member 12 female member 14, 16 rivet (holding unit) 18, 20 fabric (support) 22 engagement protruding portion 24 eyelet 26 bulging portion 28 curved wall 30 base 32 space 34 cover 36 outer flange 38 inner flange 40 side wall (blocking unit) 42 gap