KR101528837B1

KR101528837B1 - Torque sensor apparatus for steering apparatus

Info

Publication number: KR101528837B1
Application number: KR1020080090841A
Authority: KR
Inventors: 이두형
Original assignee: 현대모비스 주식회사
Priority date: 2008-09-16
Filing date: 2008-09-16
Publication date: 2015-06-16
Also published as: KR20100031953A

Abstract

An invention for a torque sensor device of a steering apparatus is disclosed. A torque sensor device of a steering apparatus of the present invention comprises: an input shaft; a torque sensor on which an output shaft is mounted; A housing surrounding the torque sensor; And a movement preventing part provided on the torque sensor and preventing movement of the torque sensor.

The present invention eliminates the need to add additional components such as O-rings and outer ears washers to secure the torque sensor, simplifying the assembly process and reducing manufacturing costs.

Vehicle, Steering Device, Torque Sensor

Description

TECHNICAL FIELD [0001] The present invention relates to a torque sensor device for a steering device,

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a torque sensor apparatus for a steering apparatus, and more particularly, to a torque sensor apparatus for a steering apparatus which prevents fluctuations in the position of a torque sensor provided in a housing, To a torque sensor device of a steering apparatus capable of reducing the assembling failure of the torque sensor.

BACKGROUND ART [0002] Generally, an automobile steering apparatus is a device for changing a traveling direction of a vehicle according to a driver's will, and is a device for assisting a driver to advance a vehicle in a desired direction by arbitrarily changing a turning center of a front wheel of the vehicle to be.

1 is a perspective view schematically showing a torque sensor device of a general steering apparatus.

Referring to Fig. 1, the torque sensor device 1 includes an input shaft 10, an output shaft 20, and a torque sensor 25.

A torque sensor 25 is coupled to the center of the torque sensor 25 and a torque sensor 25 is coupled to the torque sensor 25. The torque sensor 25 is connected to an upper plate (not shown) and an output shaft disk (not shown) (Not shown) provided with a lower plate (not shown). An input shaft (10) coupled with the upper plate and an output shaft (20) coupled with the lower plate are provided on the outer circumferential surface of the torsion bar.

The input shaft 10 connected to the wheel and the output shaft 20 connected to the wheel are twisted by the wheel to rotate and the wheel to keep the position on the ground for turning the vehicle.

The torque sensor 25 measures the twist generated by the wheel and the wheel. The measurement of the torsion is measured in accordance with the amount of rotation change in which the input shaft disk and the output shaft disk, which are respectively engaged with the input shaft 10 and the output shaft 20 and formed with a gap therebetween, are rotated together with the input shaft and the output shaft.

The angular change due to the twist is very small. When the position of the upper plate and the lower plate changes due to the vibration of the vehicle, control becomes difficult due to a signal error, and the upper plate and the lower plate must be fixed to the housing (not shown).

An O-ring 30 is provided on the outer circumferential surface of the torque sensor 25 to prevent the sensor 25 from moving right and left and the outer ebwasher 40 is provided on the top of the torque sensor 25. [ So as to prevent vertical movement.

When the torque sensor is inserted into the housing to assemble the torque sensor device of the steering apparatus, friction occurs due to the O-ring, and the torque sensor is not horizontally seated, and eccentricity or excessive force is applied thereto to cause breakage or noise do. Therefore, there is a need to improve this.

It is an object of the present invention to provide a torque sensor device for a steering apparatus which is capable of reducing assembling defects and does not require additional components.

A torque sensor device of a steering apparatus according to the present invention comprises: a torque sensor on which an input shaft and an output shaft are mounted; a housing surrounding the torque sensor; And a movement preventing part provided on the torque sensor and preventing movement of the torque sensor.

In one embodiment, the movement preventing portion includes a first movement preventing member that is press-fitted into the housing to prevent radial movement of the torque sensor.

In one embodiment, the first movement preventing member is formed so as to protrude from the outer periphery of the torque sensor.

In one embodiment, the first movement preventing member has a half-moon shape.

In one embodiment, the movement preventing portion includes a second movement preventing member for preventing movement of the torque sensor in the rotating direction, and the housing has a press-fit groove into which the second movement preventing member is press-fitted.

In one embodiment, the second movement preventing member is formed to protrude from the outer periphery of the torque sensor.

In one embodiment, the second movement preventing member is U-shaped with the outside open.

In one embodiment, the movement preventing portion is injection molded integrally with the torque sensor.

The torque sensor device of the steering apparatus according to the present invention eliminates the need to add additional parts such as an O-ring and an outer eccentric washer to fix the torque sensor, thereby simplifying the assembling process and reducing the manufacturing cost.

In addition, the present invention allows the torque sensor to be mounted horizontally, thereby reducing assembly defects and noise.

Hereinafter, an embodiment of a torque sensor device of a steering apparatus according to the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 2 is a perspective view showing a torque sensor device of a steering apparatus according to an embodiment of the present invention, and FIG. 3 is a perspective view illustrating a torque sensor of a steering apparatus according to an embodiment of the present invention.

2 and 3, the torque sensor device 100 of the steering apparatus includes a torque sensor 150 on which the input shaft 110 and the output shaft 120 are mounted, a housing (not shown) surrounding the torque sensor 150 And a movement preventing unit 160 provided in the torque sensor 150 and preventing movement of the torque sensor 150. [

A torsion bar (not shown) passes through the center of the torque sensor 150, and the torsion bar is press-fitted to the input shaft 110 and the output shaft 120 by the fixing rings 111 and 121.

An upper plate (not shown) to which the input shaft 110 is coupled, and a lower plate (not shown) to which the output shaft 120 is coupled. An input shaft disk (not shown) coupled to the input shaft 110 and an output shaft disk (not shown) coupled to the output shaft 120 are provided inside the upper and lower plates.

A gap is formed between the input shaft disk and the output shaft disk, and the input shaft 110 and the output shaft 120 are rotated together during rotation, and the distortion is measured according to the amount of rotation of the input shaft disk.

The torque sensor 150 is prevented from moving within the housing 170 by the movement preventing portion 160 in order to prevent a signal error generated in the torque sensor 150 when the torque sensor 150 measures twist .

The movement preventing portion 160 is injection-molded integrally with the torque sensor 150. Therefore, it is not necessary to add additional parts such as O-ring and outer eccentric washer to fix the torque sensor 150, and the assembling process is simplified and the manufacturing cost is reduced.

The movement preventing portion 160 includes a first movement preventing member 161 that is press-fitted into the housing 170 to prevent the torque sensor 150 from moving in the radial direction. The first movement preventing member 161 is formed to protrude from the outer periphery of the torque sensor 150. The first movement preventing member 161 is preferably formed in a semicircular shape.

The first movement preventing member 161 is formed between the torque sensor 150 and the housing 170 so that the shortest distance from the outer circumferential surface of the torque sensor 150 to the inner circumferential surface of the housing 170 is pressed into the housing 170 Is formed longer than the shortest distance of the gap. The end portion of the first movement preventing member 161 is pressed against the inner circumferential surface of the housing 170 and the torque sensor 150 is fixed in the housing 170 as if it is a tight fit so as to prevent the torque sensor 150 from moving up and down .

The movement preventing portion 160 includes a second movement preventing member 163 for preventing the torque sensor 150 from moving in the rotational direction and the housing 170 is provided with a press- Grooves 171 are formed. The second movement preventing member 163 is formed to protrude from the outer periphery of the torque sensor 150. It is preferable that the second movement preventing member 163 is formed in a U-shape with an open outside.

The width of the second movement preventing member 163 is larger than the width of the press fitting groove 171. The second movement preventing member 163 is extended in the press fitting groove 171, 2 movement preventing member 163 is pressed.

The end of the second movement preventing member 163 is caught by the press-fit groove 171 to prevent the torque sensor 150 from being displaced due to vibrations of the vehicle or the like.

Hereinafter, the assembly and operation of the torque sensor device of the steering apparatus according to the embodiment of the present invention will be described with reference to the accompanying drawings.

The input shaft 110 and the output shaft 120 are press-fitted into the upper and lower portions of the torsion bar. An upper plate and a lower plate are provided at respective end portions where the input shaft 110 and the output shaft 120 are opposed to each other. The torque sensor 150 is integrally projected with the movement preventing portion 160 and slidingly coupled from the upper portion to the lower portion to be coupled to the housing 170.

The movement preventing portion 160 protruding from the inner circumferential surface of the housing 170 is press-fitted and slides inside the housing 170. For example, the movement preventing portion 160, which is injection-molded by plastic, is pressed to be engaged with the housing 170, and then is seated in the housing 170 and fixed by being restored to the original state.

Unlike a general torque sensor, the torque sensor device 100 of the steering apparatus according to an embodiment of the present invention does not include an O-ring, so that when the torque sensor 150 is seated on the housing 170, And noise generation is reduced.

When the input shaft 110 is rotated by the operation of the wheel rotated to change the direction of the vehicle, the output shaft 120 and the torsion occur. The input shaft disk rotates in conjunction with the rotation of the input shaft 110, and the torque sensor 150 measures the twist by converting the amount of light transmitted through the output shaft disk, whose position is not changed, into a current signal do.

The torque sensor 150 is provided on the outer side of the torque sensor 150 so that the torque sensor 150 is fixed within the housing 170. The movement preventing portion 160 includes a first movement preventing member 161 that is press-fitted into the housing to prevent the torque sensor 150 from being moved up and down, And a second movement preventing member 163 which is seated on the second movement preventing member 163.

The torque sensor 150 is pressed into the housing 170 by the first movement preventing member 161 to prevent vertical movement and the second moving member is caught in the press fit groove 171 and rotated in the housing 170 . Thus, the movement prevention unit 160 reduces the error rate of the torque sensor 150.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand. Accordingly, the true scope of protection of the present invention should be defined by the following claims.

1 is a perspective view schematically showing a torque sensor device of a general steering apparatus,

2 is a perspective view showing a torque sensor device of a steering apparatus according to an embodiment of the present invention,

3 is a perspective view showing a torque sensor of the steering apparatus according to an embodiment of the present invention.

Description of the Related Art [0002]

100 ... Torque sensor device of steering device 110 ... input shaft

120 ... Output shaft 150 ... Torque sensor

160 .... movement preventing portion 161 ... first movement preventing member

163 ... second movement preventing member 170 ... housing

Claims

An input shaft, a torque sensor on which the output shaft is mounted;

A housing surrounding the torque sensor; And

And a movement preventing part provided on the torque sensor and preventing movement of the torque sensor,

Wherein the movement preventing portion includes a first movement preventing member that is press-fitted into the housing to prevent movement of the torque sensor in the radial direction,

The first movement preventing member is formed to protrude from the outer circumferential surface of the torque sensor,

Wherein the movement preventing portion includes a second movement preventing member that prevents movement of the torque sensor in the rotation direction, wherein the housing has a press-fit groove into which the second movement preventing member is press-

Wherein the first movement preventing member is hollow and has a hollow shape, and is press-fitted into the housing while being elastically deformed.

delete

The method according to claim 1,

Wherein the first movement preventing member has a half-moon shape.

delete

The method according to claim 1,

And the second movement preventing member is formed to protrude from the outer periphery of the torque sensor.

The method according to claim 6,

And the second movement preventing member is U-shaped with the outside open.

The method of any one of claims 1, 4, 6, and 7,

And the movement preventing portion is injection-molded integrally with the torque sensor.