Push nut and method for producing the same

• US 5,897,281 A
• Filed: 06/13/1997
• Issued: 04/27/1999
• Est. Priority Date: 07/22/1996
• Status: Expired due to Fees

• Current Assignee: Topy Fasteners Ltd. (TOPY Industries Limited), Ichikoh Industries Limited (Valeo SE)
• Original Assignee: Topy Fasteners Ltd. (TOPY Industries Limited), Ichikoh Industries Limited (Valeo SE)
• Inventors: Haga, Yoshiaki, Katsuno, Yoshinobu, Nakazima, Fumio, Miyoshi, Ken'ichi
• Primary Examiner(s): Saether, Flemming
• Application Number:
  US08/874,482
• Time in Patent Office: 683 Days
• Field of Search: 411/525-527, 411/502, 411/521, 411/174, 411/175
• US Class Current: 411/525
• CPC Class Codes: F16B 37/02 made of thin sheet material fastening to surfaces F16B37/04 ; used as lock-nuts F16B39/14
• CPC Class Codes: F16B 37/0842 fastened to the threaded bolt with snap-on-action, e.g. push-on nuts for stud bolts F16B37/0857 takes precedence; snap-on-action of a pin, spigot, shaft or the like and a member surrounding it F16B21/06

Abstract

A push nut having a washer member and a push spring with radial blade pieces arranged like a truncated cone serves to firmly retain a shaft or rod onto a frame or chassis of an electrical appliance or the like. The push nut, comprising the washer member and the push spring connected by one or more connectors, can easily be formed in one body by cutting or punching out an elastic plate into an elementary flat plate and folding the elementary flat plate so as to place the push spring and washer member one on another. The push nut having the united push spring and washer member is easy to handle and produce.

Claims

1. A push nut comprising:

a push spring including an annular rim and a plurality of radial blade pieces extending aslant centripetally from an inner periphery of said annular rim such that said radial blade pieces define a central push hole;

a washer member having a central hole arranged coaxially with said central push hole of said push spring;

a connector for securing said push spring to said washer member; and

a plurality of retaining tongues extending from an outer circumferential edge of said washer member toward said push spring, wherein said tabs are positioned so as to maintain coaxial alignment of said central push hole with said central hole of said washer member.

2. The push nut as claimed in claim 1, wherein said washer member is substantially flat.

3. The push nut as claimed in claim 1, wherein said push spring, said washer member, and said connector define an integral one-piece unit.

4. A push nut for being pushed on a rod or shaft, said push nut comprising:

an annular plate defining a through hole having a central axis;

a plurality of blade pieces, said blade pieces being connected to a peripheral edge of said through hole of said annular plate, wherein said blade pieces extend at an angle outwardly from said annular plate in a direction toward said central axis of said through hole so as to define a push hole; and

an annular washer member connected to said annular plate and having a through hole, wherein said washer member is disposed relative to said annular plate so that said washer member through hole is coaxial with said annular plate through hole;

a connector for connecting said annular plate to said washer member; and

a plurality of retaining tongues extending perpendicularly from an outer peripheral ed portion of said washer member an in a direction toward said annular plate, wherein said retaining tongues are positioned so as to maintain said through hole of said annular plate and said through hole of said annular washer member in substantially coaxial alignment.

5. The push nut as claimed in claim 4, wherein said annular plate and said washer member are connected together at only a single location.