CLUTCH DEVICE FOR A SEAT LIFTING APPARATUS OF A VEHICLE

• US 20070108826A1
• Filed: 11/13/2006
• Published: 05/17/2007
• Est. Priority Date: 11/17/2005
• Status: Abandoned Application

• Current Assignee: Aisin Seiki Co., Ltd. (Aisin Corp.)
• Original Assignee: Aisin Seiki Co., Ltd. (Aisin Corp.)
• Inventors: Yamada, Yukifumi, Kojima, Yasuhiro
• Application Number:
  US11/559,074
• Publication Number:
  US 20070108826A1
• Time in Patent Office: Days
• US Class Current: 297/374
• CPC Class Codes: B60N 2/1615 Parallelogram-like structure
• CPC Class Codes: B60N 2/165 Gear wheel driven mechanism
• CPC Class Codes: B60N 2/167 Ratchet mechanism
• CPC Class Codes: B60N 2/168 and provided with braking systems

Abstract

A clutch device for a seat lifting apparatus of a vehicle includes a friction brake portion for transmitting rotation of an operational lever to an output shaft, an output gear provided at the output shaft, a biasing force receiving portion provided at the output shaft for receiving a biasing force which assists a rotation of the output shaft, a first bearing portion provided at one side of the biasing force receiving portion and the output gear and a second bearing portion provided at the other side of the biasing force receiving portion and the output gear. The first bearing portion and the second bearing portion rotatably support the output shaft at both sides of the biasing force receiving portion and the output gear.

Claims

1. A clutch device for a seat lifting apparatus of a vehicle, comprising:

a friction brake portion for transmitting rotation of an operational lever to an output shaft;

an output gear provided at the output shaft;

a biasing force receiving portion provided at the output shaft for receiving a biasing force which assists a rotation of the output shaft;

a first bearing portion provided at one side of the biasing force receiving portion and the output gear; and

a second bearing portion provided at the other side of the biasing force receiving portion and the output gear, the first bearing portion and the second bearing portion rotatably supporting the output shaft at both sides of the biasing force receiving portion and the output gear.

2. A clutch device for a seat lifting apparatus of a vehicle according to claim 1, further comprising a base frame rotatably supporting the output shaft, an auxiliary frame attachable to the base frame and a spiral spring provided between the first bearing portion and the second bearing portion for supplying the biasing force to the output gear and the biasing force receiving portion, the first bearing portion and the second bearing portion being provided on the auxiliary frame and the base frame respectively.

3. A clutch device for a seat lifting apparatus of a vehicle according to claim 2, wherein the biasing force receiving portion includes a bush having an engaging groove, the bush is fitted into the output shaft so as to prevent a relative rotation between the output shaft and the bush and the engaging groove is able to be engaged with the one end of the spiral spring.

4. A clutch device for a seat lifting apparatus of a vehicle according to claim 2, further comprising a supporting shaft served as a supporting point of the biasing force generated by the spiral spring, the supporting shaft being arranged between the auxiliary frame and the base frame.