Multiple turn mechanism for manual lumbar support adjustment
AssigneeSchukra of North America, Ltd.
InventorJintao Liu
Life of this patent
Estimating the term…
Abstract
An actuator is disclosed. The actuator includes: an output gear, a pinion, a drive shaft, a housing, and a spring. The output gear is adapted to receive a traction element. The pinion is in driving communication with the output gear. The drive shaft is interconnected with the pinion. The housing is adapted to receive the output gear and the drive shaft. The coil spring is circumjacent the drive shaft and located in a position intermediate the drive shaft and the housing, whereby rotation of the drive shaft causes the coil spring to frictionally disengage from the housing such that the output gear may rotate.
Claims17
An actuator comprising:
- a. an output gear having a circumferentially extending groove for directly receiving an end portion of a wire of a Bowden cable, said output gear having a wire end stop mount for receiving installation of an end stop of the end portion of the wire of the Bowden cable whereby rotation of said output gear in a direction pulls the wire;
- b. a pinion in driving communication with said output gear such that rotation of said pinion rotates said output gear;
- c. a drive shaft interconnected with said pinion such that rotation of said drive shaft rotates said pinion;
- d. a housing adapted to receive said output gear and said drive shaft;
- e. a coil spring circumjacent said drive shaft and located in a position intermediate said drive shaft and said housing, whereby rotation of said drive shaft causes said coil spring to frictionally disengage from said housing such that said output gear may rotate;
- wherein said output gear has a circumference, wherein a portion of said circumference is geared and said geared portion has gear teeth engaging with gear teeth of said pinion such that rotation of said pinion rotates said output gear, and wherein the other portion of said circumference is non-geared such that when said pinion encounters said non-geared portion said non-geared portion prevents said pinion and said output gear from further rotating.
An ergonomic device actuator comprising:
- a. a gear directly drawing a first end portion of a wire of a Bowden cable, said gear having a circumferentially extending groove for directly receiving said first end portion of said wire of said Bowden cable, said gear having a wire end stop mount for receiving installation of an end stop of said first end portion of said wire of said Bowden cable whereby rotation of said gear in a direction pulls said wire;
- b. a pinion in driving communication with said gear such that rotation of said pinion rotates said gear;
- c. a drive shaft interconnected with said pinion such that rotation of said drive shaft rotates said pinion;
- d. a housing adapted to receive said gear and said drive shaft;
- e. a spring circumjacent said drive shaft and located in a position intermediate said drive shaft and said housing, whereby rotation of said drive shaft causes said spring to frictionally disengage from said housing such that said gear may rotate;
- f. said wire of said Bowden cable having a second end portion adapted for engagement of an ergonomic device;
- wherein said gear has a circumference, wherein a portion of said circumference is geared and said geared portion has gear teeth, engaging with gear teeth of said pinion such that rotation of said pinion rotates said output gear, and wherein the other portion of said circumference is non-geared such that when said pinion encounters said non-geared portion said non-geared portion prevents said pinion and said gear from further rotating.
Dependencies are inferred from the claim text.