Standard module device for an adjustment in height of base of a seat

• US 4,850,561 A
• Filed: 12/19/1986
• Issued: 07/25/1989
• Est. Priority Date: 12/23/1985
• Status: Expired due to Term

• Current Assignee: A & M Cousin Etablissements Cousin Freres Le BOIS de Flers
• Original Assignee: A & M Cousin Establissements Cousin Freres
• Inventors: Droulon, Georges, Pipon, Yves
• Primary Examiner(s): CHIN SHUE, ALVIN C
• Application Number:
  US06/943,809
• Time in Patent Office: 949 Days
• Field of Search: 248/421, 248/419, 248/394, 248/396, 248/422
• US Class Current: 248/421
• CPC Class Codes: B60N 2/161 Rods
• CPC Class Codes: B60N 2/1655 Cycloidal or planetary mechanism
• CPC Class Codes: B60N 2/1675 with weight compensating means

Abstract

The device comprises longitudinal adjustment slides for the seat. Each of the slides has a mobile element with an upper face carrying L-shaped supports with vertical wing portions. The vertical wing portion carries at least one mechanism having a control shaft for driving a rocking lever in rotation having a front end which cooperates with an intermediate part rigidly connected to a side portion of a framework of the seat. The rear end of the rocking lever cooperates with a front portion of a second rocking lever which is articulated on the vertical wing portion and has a rear portion which is mounted in a rear portion of the framework of the seat.

Claims

1. A standard module device for an adjustment in height of a base of a seat comprising:

longitudinal adjustment slides for the seat, each of said slides having a mobile element with an upper face carrying at least two L-shaped supports having vertical wing portions which are used as supports for pivoting points;

a unitary rocking lever having a front end which is rigidly connected to a pin and cooperates with a first button hole formed in an intermediate part which is rigidly connected to a side portion of a framework of the seat, a rear end of said rocking lever having a second button hole;

at least one mechanism supported on one of the vertical wing portions for driving in rotation the unitary rocking lever;

a second rocking lever having a pin rigidly connected to a front portion thereof and extending through said second button hole of the rear part of said unitary rocking lever, a central portion which is articulated on a fixed pin mounted on another one of said vertical wing portions, and a rear portion which holds a pin mounted in a rear portion of the framework of the seat;

a shaft for rotating the mechanism providing movement of the unitary rocking lever, said shaft having a control means; and

a mechanism for providing a continuous circular motion comprising said mechanism for driving in rotation the rocking lever.

2. A device according to claim 1, wherein said control shaft of said mechanism is driven by a reducing gear motor unit.

3. A device according to claim 1, wherein said mechanism is a continuous mechanism with an irreversible blocking toothing.

4. A device according to claim 1, wherein said mechanism is provided for a continuous circular motion and is a 0°

discontinuous principle module having one of a manual and motorized control means.

5. A device according to claim 4, wherein at least one spring, calibrated for a user'"'"'s minimum weight, facilitates lifting of the seat base.

6. A device according to claim 5, wherein a lever aids the user to move upward or downward, according to whether his weight exceeds or is less than the calibrated force of the of least one lifting spring.

7. A device according to claim 2, wherein the reducing gear motor unit is controlled by a switch placed on said lever for adjustment of the lifting system.

8. A device according to claim 1, wherein the standard module device includes an electronic means with a memory and/or a microprocessor.

9. A device according to claim 1, wherein said control means is a manual control means.