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KR-102963241-B1 - STEERING APPARATUS FOR VEHICLE

KR102963241B1KR 102963241 B1KR102963241 B1KR 102963241B1KR-102963241-B1

Abstract

The present embodiments provide an automobile steering device comprising: a lead bar having a fastening hole on its outer surface and reciprocating linearly in the axial direction; a sensor holder having a support hole communicating with the fastening hole on the inner surface facing a first sensor holder and a second sensor holder separated symmetrically from each other, and coupled to the lead bar and reciprocating linearly in the axial direction together; a housing in which the lead bar and the sensor holder are housed and both sides of the sensor holder are supported on the inner surface; and a support member coupled to the fastening hole and the support hole to support the first sensor holder and the second sensor holder with the housing and the lead bar.

Inventors

  • 배승현

Assignees

  • 에이치엘만도 주식회사

Dates

Publication Date
20260512
Application Date
20230608

Claims (10)

  1. A lead bar having a fastening hole on its outer surface and reciprocating linearly in the axial direction; A sensor holder having a support hole communicating with the fastening hole on the facing inner surface of a first sensor holder and a second sensor holder separated symmetrically from each other, and coupled to the lead bar to reciprocate linearly in the axial direction together; A housing in which the above lead bar and sensor holder are embedded, and both sides of the sensor holder are supported on the inner surface; A support member coupled to the above fastening hole and support hole to support the first sensor holder and the second sensor holder with the housing and lead bar; Includes, The above support member is, A body part screw-coupled to the above fastening hole; A head portion provided with a tool groove and seated in the support hole; Includes, The above support hole is, A small diameter portion into which the above body portion is inserted; An inclined portion formed on the upper part of the above-mentioned small portion with a gradually increasing diameter, on which the head portion of the above-mentioned support member is supported; Includes, The above support member is provided with a connecting inclined surface at the lower part of the head portion, the outer circumferential diameter of which is reduced and which is connected to the body portion and supported by the inclined portion. An automobile steering device in which the above-mentioned support member is screw-coupled to the above-mentioned fastening hole and moves, while the above-mentioned connecting inclined surface supports the above-mentioned inclined portion to support the first sensor holder and the second sensor holder toward both housings.
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  4. In Article 1, An automobile steering device in which the above support hole further includes a large diameter portion in which the diameter is enlarged at the upper part of the inclined portion and the head portion is accommodated.
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  6. In Article 1, An automobile steering device characterized by a ring-shaped elastic support member being coupled between the body portion of the support member and the connecting inclined surface.
  7. In Article 6, The above support hole is, An automobile steering device further comprising a stepped portion formed with a step difference between the above-mentioned narrow portion and inclined portion, into which the above-mentioned elastic support member is inserted.
  8. In Article 7, An automobile steering device characterized in that the outer surface diameter of the elastic support member is formed to be larger than the inner surface diameter of the stepped portion.
  9. In Article 1, An automobile steering device characterized by having a projection protruding in a direction facing each other on one of the inner surfaces of the first sensor holder and the second sensor holder facing each other, and an insertion groove into which the projection is inserted on the other side.
  10. In Article 9, An automobile steering device characterized in that the above-mentioned protrusions and insertion grooves are provided in pairs on the outer sides of both the first sensor holder and the second sensor holder.

Description

Vehicle Steering Apparatus The present embodiments relate to an automobile steering system. More specifically, the invention relates to an automobile steering system that increases the precision of steering angle measurement and maintains high durability while minimizing noise and vibration caused by play even after the transmission of shocks and vibrations from the road surface. Generally, a vehicle steering system is equipped with hydraulic devices, motors, reduction gears, etc., to perform the function of steering the wheels of a vehicle according to the driving conditions, and it is common for it to operate on the rear wheels of a standard vehicle or on the front and rear wheels of a steer-by-wire system. In an automotive steering system, the axial movement of the lead bar is measured by a sensor that detects the movement of the magnet; the sensor measures the displacement of an object undergoing linear reciprocating motion, and the electronic control unit stably controls the rotation of the vehicle based on this. However, these conventional automotive steering systems had a problem of reduced steering angle measurement precision because they could not accurately measure changes in the axial displacement of the lead bar due to reasons such as the mounting structure of the magnet, sensor, and surrounding components, and the clearance between the lead bar and the housing. In addition, as the durability of the vehicle progresses due to the transmission of shocks and vibrations from the road surface during driving, noise and vibration increase and the measurement precision of the steering angle decreases sharply, so research was being conducted to improve durability. Accordingly, the present embodiments are conceived from the aforementioned background and aim to provide an automobile steering system that can improve durability by accurately measuring the change in axial displacement of a lead bar to increase the precision of steering angle measurement, and by minimizing noise and vibration caused by play and maintaining the precision of steering angle measurement even after the durability period during which shocks and vibrations are transmitted from the road surface has progressed. In one aspect, the present embodiments may provide an automobile steering device comprising: a lead bar having a fastening hole on its outer surface and reciprocating linearly in the axial direction; a sensor holder having a support hole communicating with the fastening hole on the inner surface facing a first sensor holder and a second sensor holder separated symmetrically from each other, and coupled to the lead bar and reciprocating linearly in the axial direction together; a housing in which the lead bar and the sensor holder are housed and both sides of the sensor holder are supported on the inner surface; and a support member coupled to the fastening hole and the support hole to support the first sensor holder and the second sensor holder with the housing and the lead bar. In addition, in the embodiments, the support member may include a body portion screw-coupled to a fastening hole, and a head portion having a tool groove and seated in a support hole. In addition, in the present embodiments, the support hole may include a small diameter portion into which the body portion is inserted, and an inclined portion formed at the upper part of the small diameter portion with a gradually increasing diameter and in which the head portion of the support member is supported. In addition, in these embodiments, the support hole may further include a large-diameter portion in which the diameter is enlarged at the upper part of the inclined portion and the head portion is accommodated. In addition, in these embodiments, the support member may be provided with a connecting inclined surface at the lower part of the head portion, which is connected to the body portion and supported by the inclined portion, with the outer surface diameter being reduced. In addition, in these embodiments, a ring-shaped elastic support member may be coupled between the body portion and the connecting inclined surface of the support member. In addition, in the present embodiments, the support hole may further include a stepped portion formed with a step difference between the small diameter portion and the inclined portion, into which an elastic support member is inserted. In addition, in these embodiments, the outer surface diameter of the elastic support member may be formed to be larger than the inner surface diameter of the stepped portion. In addition, in the embodiments, one of the inner surfaces of the first sensor holder and the second sensor holder facing each other may be provided with a projection protruding in a direction facing each other, and the other side may be provided with an insertion groove into which the projection is inserted. In addition, in these embodiments, a pair of protrusions and insertion grooves may be provided on the outer side