Two-piece clockspring with lock and wire harness assembly

• US 5,429,517 A
• Filed: 08/02/1994
• Issued: 07/04/1995
• Est. Priority Date: 02/14/1994
• Status: Expired due to Term

• Current Assignee: Methode Electronics Incorporated
• Original Assignee: Methode Electronics Incorporated
• Inventors: Bolen, Patrick A.
• Primary Examiner(s): Paumen, Gary F.
• Application Number:
  US08/285,021
• Time in Patent Office: 336 Days
• Field of Search: 439/15, 439/164
• US Class Current: 439/164
• CPC Class Codes: B60R 16/027 between relatively movable parts of the vehicle, e.g. between steering wheel and column devices for measuring, signalling or controlling tyre pressure or temperature specially adapted for mounting on vehicles B60C23/00
• CPC Class Codes: H01R 35/025 having a flexible conductor wound around a rotation axis

Abstract

A clockspring interconnector comprising a housing defining a chamber and a rotor cover attached to the housing. A coiled flat cable carried within the chamber surrounding the rotor cover. The flat cable having a first end attached to a first connector location of the rotor cover and a second end attached to a second connector location of the housing. The rotor cover includes an inner wall defining a central aperture having a top opening and a bottom opening. The inner wall having integral flanges extending from the rotor cover adjacent to the bottom opening. The housing having a center hole having a rim at its external diameter. The rotor cover snap fits to the housing via the flanges having angled surfaces to slide past the rim and a protruding surface to engage the rim of the housing. The first and second end of the flat cable including a backbone to receive the end of the flat cable. A backbone protrudes from the rotor cover at a first connection location and a second connection location. The backbone including parallel channels for positioning the conductors of the flat cable. Conductors welded to uninsulated end portions of external wires and secured by a backbone cover having a strain relief means. An automatic unlocking means included in the rotor cover. The unlocking means includes a depressed or unlocked position and an undepressed or locked position. Upon assembly of the clockspring onto a steering column, the unlocking means is depressed disengaging a detente of the locking means from the recess of the housing allowing the rotor top to rotate. Further, an externally exposed locking means limits rotation of the rotor cover to 350° and may be permanently removed after assembly of the clockspring to a steering assembly. In addition, a nonreplaceable lock is provided for limiting rotation to approximately 180° during final assembly of the clockspring to a steering assembly and providing a means for prohibiting replacement of the lock after removal.

Claims

1. A clockspring connector comprising:

a housing defining a chamber;

a rotor cover attached to said housing;

a flat conductor cable coiled within said chamber having a first and a second end;

said first end attached to said first rotor cover;

said second end attached to said housing; and

a nonreplaceable locking means allowing limited rotation of the rotor cover less than 180 degrees, having a securement tab which is severed during removal of the nonreplaceable locking means so as to remain within a slot of the clockspring connector.

2. The clockspring interconnector of claim 1 wherein:

said nonreplaceable locking means is attached to said rotor cover.

3. The clockspring interconnector of claim 2 comprising:

a lip protruding from said housing;

a projection protruding from said housing a specified distance from said lip; and

a stop tab attached to said nonreplaceable locking means which will abut said lip when rotated in a first direction and said projection when rotated in a second direction.

4. The clockspring interconnector of claim 3 comprising:

a gripping member attached to said nonreplaceable locking means.

5. The clockspring interconnector of claim 4 wherein said gripping member, said stop tab and said securement tab are integrally connected.

6. The clockspring interconnector of claim 1 wherein said securement tab includes a means for separation of said securement tab from said nonreplaceable locking means.

7. The clockspring interconnector of claim 6 wherein said means for separating includes a indentation for allowing the ripping separation of the nonreplaceable locking means from said securement tab.

8. The clockspring interconnector of claim 1 wherein removal of said nonreplaceable locking means allows said rotor cover to rotate more than 180°

.