Fastener for fastening elongate object

• US 4,840,334 A
• Filed: 02/17/1988
• Issued: 06/20/1989
• Est. Priority Date: 02/17/1987
• Status: Expired due to Term

• Current Assignee: Nifco Incorporated
• Original Assignee: Nifco Incorporated
• Inventors: Kikuchi, Akio
• Primary Examiner(s): CHIN SHUE, ALVIN C
• Application Number:
  US07/156,630
• Time in Patent Office: 489 Days
• Field of Search: 248/73, 248/74.2, 248/74.5, 248/74.3, 24/453, 24/297, 24/616, 24/325, 24/305, 174/138 D, 292/DIG. 38, 411/508-510
• US Class Current: 248/73
• CPC Class Codes: F16L 3/13 and engaging it by snap action F16L3/1203 takes precedence
• CPC Class Codes: Y10T 24/42 Independent, headed, aperture pass-through fastener

Abstract

A plastic one-piece molding fastener for an elongated object includes a holding portion for holding an elongated object, first and second leg portions depending from the holding portion, first and second elastic locking portions extending from the ends of the respective first and second leg portions toward the bottom of the holding portion so as to define therewith substantially U-shaped members, locking shoulders provided on the first and second elastic locking portions for being engaged with the edge and undersurface of a mounting hole of a mounting plate within which the elongated object is to be secured, and first and second lever portions extending in opposite directions from upper portions of the elastic locking portions and perpendicular to the axial direction of the fastened elongated object and inclined downwardly with respect to the bottom of the holding portion. The first and second leg portions are serially arranged or aligned in the axial direction of the fastened elongated object and are staggered with respect to each other in a perpendicular direction with respect to the axial direction of the fastened elongated object. The first and second elastic locking portions project outwardly in directions perpendicular to the axial direction of the fastened elongated object and are disposed upon opposite sides of the longitudinal axis of the fastener.

Claims

1. A plastic one-piece molded fastener for mounting an elongated object upon a support panel having an aperture defined therein for reception of a portion of said fastener, comprising:

means for holding said elongated object, having a longitudinal axis defined therein, such that said longitudinal axis of said elongated object extends in a predetermined axial direction with respect to said holding means so as to define an axial plane within said fastener;

first, substantially U-shaped leg means having a first leg portion thereof having one end fixedly secured to an undersurface portion of said holding means which is disposed upon a first side of said axial plane of said fastener, and a second leg portion thereof, cantilevered from the other end of said first leg portion so as to be resiliently flexible with respect to said first leg portion thereof and thereby permit entrance of said first substantially U-shaped leg means into said aperture defined within said support panel, having means thereon for engaging undersurface and upper surface portions of said support panel when said first substantially U-shaped leg means of said fastener is disposed within said aperture defined within said support panel, said second leg portion of said first substantially U-shaped leg means being disposed upon a second opposite side of said axial plane of said fastener such that a hollow portion of said first substantially U-shaped leg means as defined between said first and second leg portions thereof is disposed substantially within said axial plane of said fastener; and

second, substantially U-shaped leg means having a first leg portion thereof having one end fixedly secured to an undersurface portion of said holding means which is disposed upon said second opposite side of said axial plane of said fastener, and a second leg portion thereof, elastically fixed to said first leg portion thereof so as to be resiliently flexible with respect to said first leg portion thereof and thereby permit entrance of said second substantially U-shaped leg means into said aperture defined within said support panel, having means thereon for engaging undersurface and upper surface portions of said support panel when said second substantially U-shaped leg means of said fastener is disposed within said aperture defined within said support panel, said second leg portion of said second subtantially U-shaped leg means being disposed upon said first side of said axial plane of said fastener such that a hollow portion of said second substantially U-shaped leg means as defined between said first and second leg portions thereof is disposed substantially within said axial plane of said fastener whereby said hollow portions of said first and second substantially U-shaped leg means, and said first and second substantially U-shaped leg means, are substantially co-axially disposed with respect to each other along said axial plane of said fastener.

2. A fastener as set forth in claim 1, wherein said means disposed upon said second leg portion of said first and second substantially U-shaped leg means for engaging said undersurface and upper surface portions of said support panel, comprises:

cantilevered lever means integrally formed with an upper end portion of said second leg portion of each of said first and second substantially U-shaped leg means for flexibly engaging said upper surface portions of said support panel; and

shoulder means provided upon an external surface portion of said second leg portion of each of said first and second substantially U-shaped leg means at a position beneath and spaced from said lever means for engaging said undersurface portions of said support panel such that said support panel is interposed between said lever means and said shoulder means.

3. A fastener as set forth in claim 2, wherein:

said lever means project outwardly from said upper end portion of each second leg portion in a direction substantially perpendicular to said axial plane of said fastener.

4. A fastener as set forth in claim 2, wherein:

said lever means are provided at free end portions thereof with substantially L-shaped finger-engaging means for facilitating movement of said second leg portions of said first and second substantially U-shaped leg means in a direction which will permit disengagement of said fastener from said support panel.

5. A fastener as set forth in claim 1, wherein said holding means comprises:

a base portion having a substantially semi-circular cross-sectional configuration for supporting a lower surface portion of said elongated object.

6. A fastener as set forth in claim 5, further comprising:

upstanding sidewalls projecting upwardly from opposite sides of said base portion; and

means projecting inwardly from said sidewalls, and toward each other, for engaging upper surface portions of said elongated object whereby said inwardly projecting means cooperate with said base portion for confining said elongated object therebetween.

7. A fastener as set forth in claim 6, wherein:

said inwardly projecting means are inclined downwardly and are flexibly integral with said sidewalls so as to permit entry of said elongated object past said inwardly projecting means and into a hollow cavity defined by said base portion and said inwardly projecting means.

8. A fastener as set forth in claim 7, wherein:

free end portions of said inwardly projecting means comprise arcuate engagement means for engaging said elongated object and for defining said cavity with said base portion so as to have a substantially circular configuration as viewed in cross-section.

9. A fastener as set forth in claim 1, wherein:

said first leg portions of said first and second substantially U-shaped leg means have predetermined axial lengths extending in said axial direction; and

a transversely disposed web means interconnects a downstream end portion of said first leg portion of said first substantially U-shaped leg means with an upstream end portion of said first leg portion of said second substantially U-shaped leg means as viewed in said axial direction.

10. A fastener as set forth in claim 9, wherein:

said web means is integral with said first leg portions of said first and second substantially U-shaped leg means.

11. A fastener as set forth in claim 9, wherein:

said web means is disposed substantially perpendicular to said axial plane of said fastener.

12. A fastener as set forth in claim 1, wherein:

external peripheral surfaces of said first and second leg portions of said first and second substantially U-shaped leg means have substantially rectangular configurations in cross-section so as to be accommodated within a substantially rectangularly configured aperture defined within said support panel.

13. A fastener as set forth in claim 1, wherein:

external peripheral surfaces of said first and second leg portions of said first and second substantially U-shaped leg means have substantially arcuate configurations in cross-section so as to be accommodated within a substantially circularly configured aperture defined within said support panel.

14. A fastener as set forth in claim 2, wherein:

said lever means project downwardly toward said shoulder means in an inclined manner so as to flexibly accommodate support panels of different thickness dimensions.