KR20110037573A

KR20110037573A - Pinion housing assembly for steering system

Info

Publication number: KR20110037573A
Application number: KR1020090095075A
Authority: KR
Inventors: 김종민; 박수보
Original assignee: 현대자동차주식회사
Priority date: 2009-10-07
Filing date: 2009-10-07
Publication date: 2011-04-13

Abstract

The present invention relates to a pinion housing assembly for a steering system, and even if the mounting angle of the pinion does not need to manufacture a new pinion housing 10, the pinion housing 10 can be used in common, thereby pinion housing In addition to reducing the mold cost and cost reduction for the production of (10), it is possible to greatly increase the degree of freedom of design when manufacturing the pinion housing (10).

Steering, Pinion Housing, Gearbox

Description

Pinion housing assembly for steering system

The present invention relates to a pinion housing assembly for a steering system which can be used in common regardless of the change of the mounting angle of the pinion.

In general, a steering system (steering system) provided in a vehicle is a device for converting the driving direction of a driving vehicle to the driver's will, and the driver directly steers the steering to transmit the steering force to each mechanism. An operating mechanism comprising a handle, a steering shaft, a column, and the like, a gear mechanism for increasing the operating force by reducing the rotation of the steering shaft and changing the direction of movement of the operating mechanism to the link mechanism, and transmitting the movement of the gear mechanism to the front wheel. It includes a link mechanism composed of a pitman arm, a drag link, a knuckle arm, a tie rod, and the like, in order to maintain the position of the right and left wheels at the same time as it is transmitted.

Among them, the gear mechanism generally means a gearbox device, which is provided at the lower end of the steering shaft and is installed in the pinion housing so as to be rotatable, and is installed to be engaged with the pinion to rotate the pinion. It is configured to include a rack bar in a linear motion.

Here, the pinion housing 1 in which the pinion is installed has a configuration in which a mounting unit 1a is integrally formed as shown in FIG. 1, and the mounting unit 1a is a subframe 3. ) Is fixedly installed through a fastening member 5 such as a bolt.

The pinion housing (1) is composed of a pinion mounting portion (1b) to which the pinion is mounted, and a rack bar mounting portion (1c) to which a rack bar is installed while being connected to the pinion mounting portion (1b), wherein the mounting portion (1a) It is a structure formed integrally with the rack bar mounting portion (1c).

On the other hand, the pinion may be changed in the mounting angle according to the position of the driver and steering gear mechanism for each vehicle type, in this case, the angle of the pinion mounting portion 1b should also be changed (M1 → M2).

However, when the angle of the pinion mounting portion 1b is changed in accordance with the change of the pinion mounting angle in the pinion housing 1 having the mounting portion 1a integrally, the mounting portion 1a also changes the angle. A problem arises in that the unit 1a cannot be fixed to the subframe 3 by mounting.

Therefore, in the related art, when the mounting angle of the pinion is changed according to the position of the driver and the steering gear mechanism of each vehicle type, a new pinion housing was manufactured and used, and thus, there was a problem in that mold cost and cost increased.

According to the present invention, the pinion housing and the mounting unit are dualized so that even if the mounting angle of the pinion is changed according to the position of the driver and the steering gear mechanism for each vehicle type, the pinion housing can be used in common, and thus the pinion housing can be used. It is an object of the present invention to provide a pinion housing assembly for a steering system that enables to reduce mold cost and cost, and to increase the degree of freedom in designing the pinion housing.

The pinion housing assembly for a steering system of the present invention for achieving the above object is composed of a pinion mounting portion on which a pinion provided on a steering shaft is mounted, and a rack bar mounting portion connected to the pinion mounting portion, and a rack bar mounting portion installed therein. Pinion housing and the anti-rotation projection is formed on the projection; And a mounting bracket in which the anti-rotation protrusion is formed, and a mounting bracket fixed to the subframe through the fastening member in a state in which the rack bar installation part is wrapped along the circumferential direction.

The pinion housing assembly according to the present invention does not need to manufacture a new pinion housing even if the mounting angle of the pinion is changed, so that the pinion housing can be used in common, thereby reducing mold cost and cost reduction for the production of the pinion housing. Not only can this be achieved, but also the design freedom at the time of manufacture of the pinion housing can be greatly improved.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention.

The steering system (steering system) provided in the vehicle includes a steering mechanism, a steering shaft, a column, and the like, and a link mechanism by increasing the operating force by decelerating the rotation of the steering shaft and changing the direction of movement of the operating mechanism. And a link mechanism composed of a pitman arm, a drag link, a knuckle arm, a tie rod, and the like, for transmitting the gear mechanism to the front wheel and maintaining the relation position between the left and right wheels while transmitting the movement of the gear mechanism to the front wheel. Among them, the gear mechanism is provided at the lower end of the steering shaft and is installed in the pinion housing and rotatably installed, and the rack bar is installed to engage with the pinion to perform a linear movement according to the rotational motion of the pinion. It is configured to include.

Here, the pinion housing assembly according to the present invention is a pinion housing 10 to which the pinion is mounted, as shown in Figures 2 to 6 and the mounting for fixing the pinion housing 10 to the subframe 20 It comprises a bracket 30 and the shock absorbing member 50 for the shock absorbing.

The pinion housing 10 is composed of a pinion mounting portion 11 on which a pinion provided at a lower end of a steering shaft is mounted, and a rack bar mounting portion 13 connected to the pinion mounting portion 11 to install a rack bar. The part 13 has a structure in which two rotation preventing protrusions 15 protrude integrally.

The mounting bracket 30 has a protrusion hole 31 through which the rotation preventing protrusion 15 is inserted and a fastening member 40 such as a bolt in a state in which the rack bar installation part 13 is wrapped along the circumferential direction. It is fixed to the subframe 20 via a medium.

That is, the mounting bracket 30, the projection hole 31 is formed and the arch portion 33 surrounding the rack bar mounting portion 13 in the circumferential direction by wrapping the shock absorbing member 20, It is a structure formed to have a pair of mounting portion 35 through which the fastening member 40 penetrates formed at both ends of the arch portion 33 to the outside and fixedly installed in the subframe 20.

In addition, the present invention is installed so as to be located between the rack bar installation portion 13 and the arch portion 33 of the mounting bracket 30 through the rack bar installation portion 13 and the anti-rotation protrusion 15 It further comprises a shock absorbing member 50 is formed with a projection hole 51 through which is inserted.

The shock absorbing member 50 is preferably formed of rubber in order to improve the shock absorbing performance is not limited thereto.

In addition, the protrusion hole 31 of the mounting bracket 30 and the protrusion hole 51 of the shock absorbing member 50 are formed in a shape corresponding to the shape and size of the anti-rotation protrusion 15.

Accordingly, the shock absorbing member 50 is installed through the rack bar mounting portion 13 so that the rotation preventing projection 15 penetrates the projection hole 51, and the rotation preventing projection penetrates the projection hole 51. After the mounting bracket 30 is wrapped along the circumferential direction of the rack bar mounting portion 13 so that the 15 continues to pass through the projection hole 31, the mounting portion 35 of the mounting bracket 30 is fastened to the fastening member ( 40 is fastened to the subframe 20 via the medium, the pinion housing 10 is completed installation.

The completed pinion housing 10 is rotated along the circumferential direction of the rack bar mounting portion 13 by the anti-rotation protrusion 15 penetrating the projection holes 31 and 51 and the longitudinal direction of the rack bar mounting portion 13. The linear movement along the line becomes impossible.

In addition, the pinion may be changed in the mounting angle according to the position of the driver and steering gear mechanism for each vehicle type, in which case the angle of the pinion mounting portion 11 should also be changed (M3 → M4).

When the angle of the pinion mounting portion 11 is changed, the angle of the anti-rotation protrusion 15 formed on the rack bar mounting portion 13 is also changed.

Therefore, when the new mounting bracket 30 and the shock absorbing member 50 having the projection holes 31 and 51 are formed in accordance with the angle of the anti-rotation protrusion 15 whose installation angle is changed, the rack bar mounting portion 13, The pinion housing 10 can be smoothly installed in the subframe 20.

That is, in the related art, when the mounting angle of the pinion is changed according to the position of the driver and the steering gear mechanism of each vehicle type, a new pinion housing should be manufactured by using a new mold, but the present invention rotates without new production of the pinion housing 10. If only the new mounting bracket 30 and the shock absorbing member 50 having the projection holes 31 and 51 whose positions are changed in accordance with the angle of the prevention protrusion 15 are replaced, the pinion housing 10 is transferred to the subframe 20. The installation can be completed smoothly.

Accordingly, the embodiment of the present invention can be used publicly without having to manufacture a new pinion housing 10 even if the mounting angle of the pinion is changed, and as a result, it is possible to reduce mold cost and cost for manufacturing the pinion housing 10. Not only can it be achieved, there is an advantage that can greatly increase the degree of freedom of design when manufacturing the pinion housing (10).

1 is a view for explaining a conventional pinion housing,

2 is a view for explaining the pinion housing assembly according to the invention,

3 is a cross-sectional view of the pinion housing assembly according to the present invention;

4 to 6 are views for explaining the pinion housing, the mounting bracket and the shock absorbing member.

10-pinion housing 11-pinion mounting

13-Rack bar mounting part 15-Anti-rotation protrusion

20-Subframe 30-Mounting Bracket

31,51-Protrusion hole 40-Fastening member

50-shock absorbing member

Claims

A pinion housing comprising a pinion mounting portion on which a pinion provided on a steering shaft is mounted and a rack bar mounting portion connected to the pinion mounting portion, and a rack bar mounting portion installed therein, wherein the anti-rotation protrusion is formed on the rack bar mounting portion;

A mounting bracket having a projection hole through which the rotation preventing projection is inserted, and fixed to the subframe by a fastening member with the rack bar installation part wrapped in a circumferential direction;

Pinion housing assembly for a steering system comprising a.

The shock absorbing member of claim 1, further comprising: a shock absorbing member which is penetrated by the rack bar mounting unit and positioned between the rack bar mounting unit and the mounting bracket, and has protrusion holes through which the rotation preventing protrusion is inserted;

Pinion housing assembly for a steering system further comprising.

The method according to claim 2, wherein the projection hole of the mounting bracket and the projection hole of the shock absorbing member is formed in a shape corresponding to the shape and size of the anti-rotation projection;

A pinion housing assembly for a steering system.

The method of claim 2, wherein the mounting bracket,

An arch portion which is formed with the protrusion hole and wraps the rack bar mounting portion in a circumferential direction by wrapping the shock absorbing member;

A pair of mounting portions which are formed to be bent outwardly from both ends of the arch portion and through which the fastening member penetrates and is fixed to the subframe;

Pinion housing assembly for a steering system, characterized in that it is formed to have.

The method of claim 2, wherein the shock absorbing member is formed of rubber;

A pinion housing assembly for a steering system.