TELESCOPIC DEVICE OF STEERING COLUMN FOR VEHICLE

• US 20140290424A1
• Filed: 03/28/2014
• Published: 10/02/2014
• Est. Priority Date: 03/29/2013
• Status: Active Grant

• Current Assignee: HL Mando Corporation (Halla Holdings Corporation)
• Original Assignee: Mando Corporation (Halla Holdings Corporation)
• Inventors: KWON, HYUN BI
• Granted Patent: US 9,079,610 B2
• Time in Patent Office: Days
• US Class Current: 74/493
• CPC Class Codes: B62D 1/184 Mechanisms for locking columns at selected positions
• CPC Class Codes: B62D 1/185 adjustable by axial displacement, e.g. telescopically B62D1/183, B62D1/187, B62D1/19 take precedence
• CPC Class Codes: B62D 1/187 with tilt adjustment; with tilt and axial adjustment B62D1/183, B62D1/19 takes precedence
• CPC Class Codes: B62D 1/189 the entire column being tiltable as a unit

Abstract

A telescopic device of a steering column for a vehicle includes an internal tube (200) connected to a vehicle body and formed in a lengthwise direction, a telescopic bush (250) provided around the internal tube (200) and having a fixing hole (252), through which a tilt bolt (300) of a tilt device enabling a steering column to have a tilt motion passes, so as to fix the tilt bolt (300), and an external tube (100) provided to enclose an outer side of the internal tube (200) and to move in a telescopic motion in the lengthwise direction of the internal tube (200) and having a guide hole (120) formed in the lengthwise direction so that the telescopic bush (250) is inserted therein and protrudes.

Claims

1. A telescopic device of a steering column for a vehicle, comprising:

an internal tube (200) connected to a vehicle body and formed in a lengthwise direction;

a telescopic bush (250) provided around the internal tube (200) and having a fixing hole (252), through which a tilt bolt (300) of a tilt device enabling a steering column to have a tilt motion passes, so as to fix the tilt bolt (300); and

an external tube (100) provided to enclose an outer side of the internal tube (200) and to move in a telescopic motion in the lengthwise direction of the internal tube (200) and having a guide hole (120) formed in the lengthwise direction so that the telescopic bush (250) is inserted therein and protrudes.

2. The telescopic device of claim 1, wherein, in the external tube (100), a through-hole (110) through which the tilt bolt (300) passes so as to guide a moving range of the external tube (100) is formed at both sides of the guide hole (120), and

the telescopic bush (250) fixes the tilt bolt (300) in a predetermined height so that the tilt bolt (300) is not in contact with an inner surface of the through-hole (110).

3. The telescopic device of claim 1, wherein an upper portion of the fixing hole (252) of the telescopic bush (250) is formed to be open.

4. The telescopic device of claim 1, wherein a connection part 256 fixed to the internal tube 200 is formed at a lower portion of the telescopic bush 250.

5. The telescopic device of claim 4, wherein a front and rear directional cross section of the connection part (256) is in multi-point contact with the internal tube (200).

6. The telescopic device of claim 4, wherein a right and left directional cross-sectional curvature of the connection part (256) is formed to be the same as a curvature of the internal tube (200).

7. The telescopic device of claim 4, wherein a right and left directional cross-sectional curvature of the connection part (256) is formed to be different from a curvature of the internal tube (200).