Transmission amplifier assembly for a bowden cable and method of using the same
AssigneeSchukra Geratebau AG
InventorsRobert Kopetzky, Veit Stobel
Life of this patent
Estimating the term…
Abstract
A bowden cable transmission device (10′) is provided between the bowden cable actuator (16) and the lumbar support member (14) of an adjustable lumbar support assembly (12). The bowden cable transmission device converts movement of a first wire portion (52) of a bowden cable (18) attached to the bowden cable actuator (16) into movement of a second wire portion (26) attached to the lumbar support member (14) in accordance with a predetermined transmission ratio such that a movement or adjustment of the second wire portion (26) is facilitated.
Claims17
An adjustable lumbar support assembly, comprising:
- an adjustable lumbar support member;
- a Bowden cable actuator for actuating a Bowden cable having a first wire portion and a second wire portion;
- and
- a transmission amplifier assembly for the Bowden cable, the transmission amplifier assembly comprising a rotary member being supported rotatably, the Bowden cable with the first wire portion being connected between the Bowden cable actuator and the transmission amplifier assembly and with the second wire portion being connected between the transmission amplifier assembly and the adjustable lumbar support member, and the first wire portion and the second wire portion of the Bowden cable being both coupled to the rotary member such that movement of the first wire portion imparts rotation of the rotary member and thereby movement of the second wire portion in accordance with a predetermined transmission ratio, the movement of the second wire portion being facilitated compared to the movement of the first wire portion by the predetermined transmission ratio.
A method of adjusting a lumbar support member, comprising the steps:
- causing motion of a first wire portion of a Bowden cable relative to a sleeve of the Bowden cable via a Bowden cable actuator;
- converting the motion of the first wire portion into motion of a second wire portion in accordance with a predetermined transmission ratio, the conversion being such that the motion of the second wire portion being facilitated compared to the motion of the first wire portion by the predetermined transmission ratio;
- adjusting the lumbar support member in response to the motion of the second wire portion.
Dependencies are inferred from the claim text.