Stopper and driver for steering apparatus having the same

Patent metadata

Field	Value
Publication number	US-12077223-B2
Application number	US-202217577452-A
Country	US
Kind code	B2
Filing date	Jan 18, 2022
Priority date	Feb 1, 2021
Publication date	Sep 3, 2024
Grant date	Sep 3, 2024

Abstract

The present disclosure is direction to a stopper disposed in a driver for a steering apparatus which includes a worm gear, a bearing supporting rotation of the worm gear, and a damper buffering an impact of the bearing is provided, the stopper including: an annular body having a through hole therein allowing one side of the worm gear to pass through; and a leg on the annular body to protrude toward the damper along an axial direction of the worm gear.

First claim

What is claimed is:

1. A driver for a steering apparatus providing an auxiliary torque of the steering apparatus, the driver comprising:
a driver housing in which an installation area is formed;
a worm gear disposed in the installation area;
a first bearing rotatably supporting one side of the worm gear;
a damper through which one side of the worm gear supported by the first bearing passes, the damper buffering an impact in an axial direction of the worm gear; and
a stopper through which one side of the worm gear passes, the stopper restricting movement of the damper in the axial direction of the worm gear,
wherein the stopper comprises:
an annular body having a through hole through which one side of the worm gear passes; and
a plurality of legs spaced apart from each other on the annular body,
wherein an interior portion of each of the plurality of legs surrounds an outer circumferential surface of one area of the damper and,
wherein the damper comprises:
a first damper support supporting a side surface of the bearing;
a second damper support supporting the stopper and spaced apart from the first damper support; and
a connector connecting the first damper support and the second damper support, and surrounded by the interior portion of each of the plurality of legs,
wherein the plurality of legs is spaced apart from the first damper support in the axial direction.

2. The driver for the steering apparatus of claim 1 , further comprising a snap ring supporting the stopper to the driver housing.

3. The driver for the steering apparatus of claim 2 , wherein the driver housing includes a snap ring recess formed concavely such that a portion of an outer circumference of the snap ring is inserted and supported.

4. The driver for the steering apparatus of claim 1 , wherein the damper is disposed between the bearing and the stopper.

5. The driver for the steering apparatus of claim 1 , wherein one side of the leg faces another surface of the first damper support which is opposite to one surface of the first damper support facing a side surface of the bearing.

6. The driver for the steering apparatus of claim 1 , further comprising:
a second bearing rotatably supporting another side of the worm gear; and
an auxiliary damper disposed between the driver housing and the second bearing and buffering an impact in the axial direction of the worm gear.

7. The driver for the steering apparatus of claim 1 , wherein the stopper comprises a plastic material.

8. The driver according to claim 1 ,
wherein the plurality of legs is formed to protrude toward a toothed area of the worm gear and surround one side of the worm gear passing through the annular body.

9. The driver according to claim 1 ,
wherein the bearing and axial ends of the plurality of legs of the stopper are spaced apart in the axial direction.

10. The driver according to claim 1 ,
wherein a diameter of an outer circumference of the connector is smaller than a diameter of an outer circumference of the first damper support.

11. The driver according to claim 10 .
wherein the diameter of the outer circumference of the connector is smaller than a diameter of an outer circumference of the second damper support.

12. The driver according to claim 11 ,
wherein the diameter of the outer circumference of the connector is equal to or smaller than a diameter of a circle formed by the interior portions of the plurality of legs.

Assignees

• Hl Mando Corp

Inventors

• Lee Kyeongho

Classifications

• B62D5/0403

  characterised by constructional features, e.g. common housing for motor and gear box · CPC title

• B60Y2306/09

  Reducing noise · CPC title

• F16H2057/0213

  Support of worm gear shafts · CPC title

• F16B21/183

  internal, i.e. with spreading action · CPC title

• F16C35/063

  Fixing them on the shaft (with interposition of an element F16C35/07) · CPC title