Power steering device
AssigneeKYB Corporation
InventorTakaya Yagyu
Life of this patent
Estimating the term…
Abstract
A power steering device includes a bearing rotatably supporting the tip side of a worm shaft, a gear case provided with the housing hole for housing the worm shaft and a holder housing the bearing. The holder includes a first holder holding the bearing, a second holder having the guide part configured to guide a movement of the second bearing toward a worm wheel, and a spring provided in a compressed state between the first holder and the second holder and configured to bias the first holder toward the worm wheel. The second holder includes a holder opening part configured to allow the bearing and the first holder to pass through thereof in the guiding direction of the guide part to guide the bearing, and the first holder faces an inner peripheral surface of the housing hole through the holder opening part.
Claims14
A power steering device, comprising:
- a worm shaft configured to rotate as an electric motor is driven;
- a worm wheel meshed with the worm shaft;
- a bearing configured to rotatably support a tip side of the worm shaft;
- a gear case provided with a housing hole configured to house the worm shaft;
- and
- a holder housed in the housing hole, the holder housing the bearing,
- wherein:
- the holder includes:
- a first holder configured to hold the bearing;
- a second holder having a guide part configured to guide a movement of the bearing toward the worm wheel;
- and
- a biasing member provided in a compressed state between the first holder and the second holder, the biasing member biasing the first holder toward the worm wheel,
- the second holder includes a holder opening part configured to allow the bearing and the first holder to pass through thereof in a guiding direction of the guide part to guide the bearing, the guiding direction being perpendicular to a center axis of the worm shaft, and
- the first holder faces an inner peripheral surface of the housing hole through the holder opening part.
A power steering device, comprising:
- a worm shaft configured to rotate as an electric motor is driven;
- a worm wheel meshed with the worm shaft;
- a bearing configured to rotatably support a tip side of the worm shaft;
- a gear case provided with a housing hole configured to house the worm shaft;
- and
- a holder housed in the housing hole, the holder housing the bearing,
- wherein:
- the holder includes:
- a first holder configured to hold the bearing;
- a second holder having a guide part configured to guide a movement of the bearing toward the worm wheel;
- and
- a biasing member provided in a compressed state between the first holder and the second holder, the biasing member biasing the first holder toward the worm wheel,
- the second holder includes a holder opening part configured to allow the bearing and the first holder to pass through thereof in a guiding direction of the guide part to guide the bearing,
- the first holder faces an inner peripheral surface of the housing hole through the holder opening part,
- the holder further includes a locking member configured to lock the first holder and the second holder,
- the locking member elastically holds the holder in the housing hole,
- the second holder is biased in a direction separating from the worm wheel and pressed against the inner peripheral surface of the housing hole by the locking member.
A power steering device, comprising:
- a worm shaft configured to rotate as an electric motor is driven;
- a worm wheel meshed with the worm shaft;
- a bearing configured to rotatably support a tip side of the worm shaft;
- a gear case provided with a housing hole configured to house the worm shaft;
- and
- a holder housed in the housing hole, the holder housing the bearing,
- wherein:
- the holder includes:
- a first holder configured to hold the bearing;
- a second holder having a guide part configured to guide a movement of the bearing toward the worm wheel;
- and
- a biasing member provided in a compressed state between the first holder and the second holder, the biasing member biasing the first holder toward the worm wheel,
- the second holder includes a holder opening part configured to allow the bearing and the first holder to pass through thereof in a guiding direction of the guide part to guide the bearing,
- the first holder faces an inner peripheral surface of the housing hole through the holder opening part,
- the holder further includes a locking member configured to lock the first holder and the second holder,
- the locking member elastically holds the holder in the housing hole,
- the second holder includes an arcuately extending groove part in an outer peripheral surface, and
- the locking member is an arcuate clip to be housed into the groove part.
Dependencies are inferred from the claim text.