KR20200050263A - Rack Bar Supporting Device of Steering Apparatus for Vehicle - Google Patents

Abstract

The present embodiments relate to a rack bar support device for a vehicle steering device, which prevents noise generated by an increase in gap due to the wear of a support yoke or noise caused by a shock that is reversely input from a road surface, provides a comfortable steering feel to a driver when steering, shortens an assembly process when being assembled to the vehicle, and prevents misassembly or loss of parts.

Description

Rack Bar Supporting Device of Steering Apparatus for Vehicle}

The present embodiments relate to a rack bar support device for an automobile steering system. In more detail, in a rack bar support device of a rack pinion steering system of a vehicle, noise generated due to an increase in play due to wear of a support yoke, or noise generated by a shock that is reversely input from a road surface is prevented and comfortable to a driver during steering. The present invention relates to a rack bar support device for an automobile steering device that can provide a steering feeling and also prevents mis-assembly or loss of each component as well as shortening the assembly process when assembling the vehicle.

In general, the steering device of a vehicle is a device for changing a vehicle's driving direction at the will of the driver, and is a device that assists the driver to advance the vehicle in a desired direction by arbitrarily changing a rotation center that the vehicle's front wheel turns. .

The steering device of the vehicle is equipped with a rack bar and pinion gear that converts the rotational force received from the steering shaft into a linear motion when the driver's steering wheel is operated, and the rack bar is moved in the pinion gear direction so that the engagement between the rack bar and the pinion gear is well achieved. A supporting rack bar support device is provided.

However, such a conventional rack bar support device causes a deviation in the support force between the left and right sides when sliding the left and right sides of the rack bar, and decreases the steering feeling of the driver, and increases the clearance due to the wear of the support yoke and the rack bar, so that the rack bar cannot be properly supported. There was a problem that rattle noise was generated in the support yoke and the yoke plug due to a problem and an increase in clearance.

In addition, when the support yoke is more or less durable, there is a problem in that unevenness is generated in the supporting force of the rack bar as a result of uneven wear on either side, thereby deteriorating steering stability.

These embodiments are devised from the above-mentioned background and prevent steering caused by an increase in play due to abrasion of the support yoke in a rack bar support device of an automobile steering apparatus, or noise generated by an impact that is reversely input from a road surface. The purpose is to provide a comfortable steering feel to the driver.

In addition, in the rack bar support device of an automobile steering device, an assembly process is shortened during assembly, and its purpose is to prevent mis-assembly or loss of each part.

In addition, the purpose of the present embodiments is not limited to this, and other objects not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve this object, the present embodiments include a support yoke inserted into the gearbox to support the rack bar, and a plug module supporting the support yoke in the rack bar direction, wherein the plug module supports the support yoke and circumferentially A spring cam member having an elastic support portion with an increased amount of separation from the back of a support yoke, a rotating cam member with an inclined surface with an increase in the amount of axial projection in a circumferential direction corresponding to the elastic support portion, a rotating cam member And a spring cam member, which is fixed to the gearbox and provides a rack bar support device for a vehicle steering system including a yoke plug connected to a rotating cam member and a torsion spring.

In addition, the present embodiments include a first module that is inserted into the gearbox and supports the rack bar, and a second module that supports the first module in the rack bar direction, wherein the first module supports the rack bar in the pinion gear direction. The support yoke, the support yoke, and a spring cam member having an elastic support portion formed to increase the amount of separation from the rear surface of the support yoke as it goes in the circumferential direction, and the second module moves in the circumferential direction to a position corresponding to the elastic support portion. Provides a rack bar support device for an automobile steering system including a rotating cam member having an inclined surface that increases the amount of protrusion in the axial direction, a rotating cam member built in and fixed to the gear box, and a yoke plug connected to the rotating cam member and a torsion spring. do.

According to the present exemplary embodiments, it is possible to prevent noise generated due to an increase in play due to wear of the support yoke or generated by an impact that is reversely input from the road surface, and to provide a comfortable steering feeling to the driver during steering. have.

In addition, the assembly process is shortened when assembling the vehicle, and it is possible to prevent incorrect assembly or loss of each component.

1 is a schematic diagram schematically showing a vehicle steering system in the present embodiments,
2 to 5 is an exploded perspective view showing a rack bar support device of a vehicle steering apparatus according to the present embodiment,
Figure 6 is a plan view and a side view showing a part of the rack bar support device of the vehicle steering apparatus according to the present embodiment,
7 and 8 is a cross-sectional view showing a rack bar support device of a vehicle steering apparatus according to the present embodiment,
9 to 12 is an exploded perspective view showing a rack bar support device of a vehicle steering apparatus according to the present embodiment,
13 and 14 are cross-sectional views showing a rack bar support device of an automobile steering apparatus according to the present embodiments.

Hereinafter, some embodiments of the present embodiments will be described in detail through exemplary drawings. It should be noted that in adding reference numerals to the components of each drawing, the same components have the same reference numerals as possible even though they are displayed on different drawings. In addition, in describing the present embodiments, when it is determined that detailed descriptions of related well-known configurations or functions may obscure the gist of the present embodiments, detailed descriptions thereof will be omitted.

Further, in describing the components of the present embodiments, terms such as first, second, A, B, (a), and (b) may be used. These terms are only for distinguishing the component from other components, and the nature, order, or order of the component is not limited by the term. When a component is described as being "connected", "coupled" or "connected" to another component, the component may be directly connected to or connected to the other component, but another component between each component It will be understood that elements may be "connected", "coupled" or "connected".

1 is a schematic view schematically showing an automobile steering apparatus in the present embodiments, FIGS. 2 to 5 are exploded perspective views showing a rack bar support apparatus of an automobile steering apparatus according to the present embodiments, and FIG. 6 is an exploded perspective view of the embodiments. Top and side views showing a part of the rack bar support device of the vehicle steering system by, and FIGS. 7 and 8 are cross-sectional views showing the rack bar support device of the vehicle steering system according to the present embodiments, and FIGS. 9 to 12 are shown in the present embodiments. An exploded perspective view showing a rack bar support device of an automobile steering apparatus, and FIGS. 13 and 14 are cross-sectional views showing a rack bar support apparatus of an automobile steering apparatus according to the present embodiments.

First, referring to Figures 1 to 8, the rack bar support device of the vehicle steering apparatus according to the present embodiment, the support yoke 260 is inserted into the gear box 130 to support the rack bar 140, and the support yoke It includes a plug module 210 for supporting the 260 in the direction of the rack bar 140, the plug module 210 supports the support yoke 260, and the amount of separation from the back of the support yoke 260 toward the circumferential direction Spring cam member 250 having an elastic support portion 251 is formed, a rotating cam member having an inclined surface 241 with an increase in the axial direction as it goes circumferentially at a position corresponding to the elastic support portion 251 (240), a rotating cam member 240 and a spring cam member 250 are built in and fixed to the gearbox 130, and includes a yoke plug 220 connected to the rotating cam member 240 and the torsion spring 230 do.

In the detailed description of the present embodiments, unless otherwise specified, for convenience of explanation, the direction of the rack bar 140, which is the front side of the support yoke 260, is directed to the front and the opposite direction is designated to the rear to be described.

As shown in FIG. 1, the vehicle steering device includes a steering wheel 100 disposed in the driver's seat, a steering shaft 105 connected thereto, and a steering column 103 and a steering shaft 105 to fix the steering shaft to the vehicle body. The rack box 110 provided with the rack gear 110 and the pinion gear 120 for converting the rotational force input from the linear motion to the linear motion, the rack bar 140 having the inner ball joint 135 at both ends, the inner ball joint ( 135) and a tie rod 150 formed integrally with the ball.

Then, the tie rod 150 is connected to the outer ball joint 155 and transmits power to the knuckles (Knuckle, 159) to steer the tire 158.

The rack bar 140 meshes with the pinion gear 120 to convert the rotational motion into a linear motion. On the rear surface of the rack bar 140, the rack bar 140 so that the rack bar 140 and the pinion gear 120 mesh well. Rack pin support device for supporting the pinion gear 120 in the direction is provided.

Here, the rack bar support device in the present embodiment is composed of a support yoke 260 and a plug module 210, as shown in Figures 2 to 8, the plug module 210 to the gear box 130 It is fixed and supports the support yoke 260 toward the rack bar 140.

The support yoke 260 supports the rear surface of the rack bar 140 via a yoke seat (not shown) provided on the front surface and is coupled to the gear box 130, and an elastic ring ( 211) is coupled to prevent rattle noise during shock and vibration transmitted from the road surface through the rack bar 140.

Here, since the elastic ring 211 is required to be formed of a material capable of absorbing vibration and noise and having predetermined bending, elasticity, and rigidity, NR (Natural Rubber), NBR (Nitrile Butadiene) having such properties Rubber, CR (Chloroprene Rubber), EPDM (Ethylene Propylene Terpolymer), FPM (Fluoro Rubber), SBR (Styrene Butadine Rubber), CSM (Chlorosulphonated Polyethylene), urethane, silicone, etc.

The plug module 210 supports the support yoke 260, and the spring cam member 250 and the elastic support portion (250) are formed with an elastic support portion 251 that increases in the circumferential direction to increase the distance from the rear surface of the support yoke 260. 251), the rotating cam member 240, the rotating cam member 240 and the spring cam member 250 are formed with a sloped surface 241, which increases in the axial direction as the circumferential direction increases to a position corresponding to the gear. It is fixed to the box 130 and includes a yoke plug 220 connected to the rotating cam member 240 and the torsion spring 230.

Therefore, the assembly and transportation can be performed in units of the plug module 210, thereby shortening the assembly process and preventing incorrect assembly or loss of each component.

In addition, the plug module 210 may include a provisional coupling member 201 that integrally couples the spring cam member 250, the rotating cam member 240, and the yoke plug 220.

That is, the first hole 222 formed in the yoke plug 220, the second hole 242 formed in the rotating cam member 240, the provisional coupling member 201 to the coupling hole 252 formed in the spring cam member 250 ) Is fastened to form the plug module 210 integrally, and the provisional coupling member 201 can be separated after the plug module 210 is assembled to the gear box 130.

The yoke plug 220 has a first receiving portion 221 in which a spring cam member 250 is accommodated on an inner circumferential surface of one end portion, and a fixed protrusion protruding in a radial direction on the inner circumferential surface of the first receiving portion 221 ( 225) is formed.

In addition, a fixing groove 256 into which the fixing protrusion 225 of the yoke plug 220 is inserted is formed on the outer circumferential surface of the spring cam member 250, so that the rotating cam member 240 is rotated by the torsion spring 230 Even if the spring cam member 250 can be fixed without being rotated.

The yoke plug 220 has a second receiving portion 223 in which a rotating cam member 240 is accommodated at an inner end of the first receiving portion 221 and a torsion spring at an inner end of the second receiving portion 223. The third receiving portion 224 in which the 230 is accommodated is formed, so that the rotating cam member 240 is supported by the torsion spring 230 inside the yoke plug 220 and can be combined.

In addition, the second receiving portion 223 is formed with a support protrusion 224b protruding in the axial direction, and a first stepped portion 243a supported by the support protrusion 224b is formed on the rotating cam member 240, When the rotating cam member 240 and the torsion spring 230 are coupled to the yoke plug 220, the rotating cam member 240 can rotate only in one direction.

In addition, the third receiving portion 224 has a locking groove 224a is formed so that one end 231a of the torsion spring 230 is seated and supported on the locking groove 224a, and the rotating cam member 240 has a torsion. A second stepped portion 243b on which the other end 231b of the spring 230 is supported is formed, so that the torsion spring 230 is elastically compressed and coupled.

The yoke plug 220 is formed with a screw portion 229 on the outer circumferential surface, so that it can be screwed to the inside of the gearbox 130, and the outer end portion can be formed with a mounting portion 227 to which a tool is coupled during assembly and gear. On the outside of the box 130, the lock nut (unsigned) is prevented from being loosened and fixed.

The spring cam member 250 allows the rotating cam member 240 to be supported while rotating, compensating for the axial play of the support yoke 260, and at the same time, when the vehicle is driving, when a shock load is generated from the road surface, the rotating cam member It absorbs the impact load transmitted in the axial direction between the 240 and the support yoke 260.

That is, when an impact load is transmitted from the road surface during driving of the vehicle, the spring cam member 250 is an elastic support portion 251 supported on the inclined surface 241 of the rotating cam member 240 while the elastic deformation is performed in the axial direction to transmit the impact. It is supposed to absorb the load.

The spring cam member 250 is supported by the support yoke 260 and is provided with a body portion 253 to be seated, and an elastic support portion 251 to an extension portion 255 extending in the radial direction from the outer circumferential surface of the body portion 253 ) Is formed in the circumferential direction.

The body portion 253 of the spring cam member 250 is formed in an annular shape with a coupling hole 252 formed in the center, and is seated and supported on the rear surface of the support yoke 260. The plug module 210 is mounted on the gearbox 130. After assembling to), separating the provisional coupling member 201, the coupling hole 252 is supported by the central protrusion 261 located at the center of the rear surface of the support yoke 260 to support the center.

In addition, an extension portion 255 extending in a radial direction is provided on one side of the outer circumferential surface of the body portion 253 formed in an annular shape, and a fixing protrusion 225 of the yoke plug 220 is inserted on the outer circumferential side of the extension portion 255. The fixed groove 256 is formed so that even if the rotating cam member 240 is rotated by the torsion spring 230, the spring cam member 250 can be fixed without being rotated.

In addition, the extension portion 255 is provided with an elastic support portion 251 connected in the circumferential direction with the extension portion 255 is supported on the inclined surface 241 of the rotating cam member 240, as described above, elastically deformed in the axial direction As this is done, the impact load transmitted from the road surface is absorbed.

In the spring cam member 250, the elastic support portions 251 are spaced apart in the circumferential direction, and two or more can be disposed, and each elastic support portion 251 has one end connected in the circumferential direction with the extension portion 255 and at one end. It is formed to extend spirally to the other end, and in the present exemplary embodiment, three elastic support portions 251 are provided.

Here, the elastic force of the elastic support portion 251 is formed larger than the elastic force of the torsion spring 230.

That is, when the clearance compensation due to wear of the support yoke 260 is supported, the elastic support portion 251 is supported without being elastically deformed in the axial direction to support the rotation of the rotating cam member 240, but as the impact load transmitted from the road surface When transferring a large load, the elastic support portion 251 absorbs the impact load while the elastic deformation is performed in the axial direction.

In addition, the rotating cam member 240 connected to the yoke plug 220 and the torsion spring 230 has an inclined surface 241 that increases in the axial direction as the circumferential direction of the front surface opposite to the spring cam member 250 increases. This is formed, and these inclined surfaces 241 may be provided in two or more positions corresponding to the elastic support portion 251, respectively.

That is, when the clearance increases due to wear of the support yoke 260, the rotating cam member 240 is rotated by the torsion spring 230 while being rotated in the axial direction by the difference in the protrusion amount of the inclined surface 241 supported by the elastic support 251. While supporting, the spring cam member 250 and the support yoke 260 are pushed to compensate for the clearance.

And, the inclined surface 241 and the inclined surface 241 are connected in the circumferential direction, and the stepped portion 245, which is a stepped portion in the axial direction, is supported on the end portion of the elastic support portion 251, so that the plug module 210 is temporarily approved. When combined with the combining member 201, the rotating cam member 240 does not rotate and the torsion spring 230 is elastically compressed and combined.

After the plug module 210 integrally coupled to the provisional coupling member 201 is assembled to the gear box 130, the temporary coupling member 201 can be separated as shown in FIG. The cap member 203 may be coupled to the one hole 222 to prevent foreign substances from entering the outside.

That is, it is irrelevant even if the temporary coupling member 201 remains fixed so that the torsion spring 230 does not loosen before the play occurs due to the endurance, so the operator may remove the temporary coupling member 201 immediately after assembly. , After the endurance has progressed to some extent, the temporary coupling member 201 may be removed to compensate for the clearance between the support yoke 260 and the rack bar 140.

On the other hand, the present embodiment shown in Figures 9 to 14, the first module 320 is inserted into the gear box 130 to support the rack bar 140, and the first module 320 in the direction of the rack bar 140 It is provided with a second module 310 to support.

Here, the same configurations as the above-described configurations of FIGS. 1 to 8 will be omitted and detailed configurations will be mainly described.

The first module 320 supports the support yoke 260 and the support yoke 260 which support the rack bar 140 in the pinion gear 120 direction, and the distance from the rear of the support yoke 260 toward the circumferential direction It includes a spring cam member 250 having an elastic support portion 251 is increased.

In addition, the second module 310, the rotating cam member 240, the rotating cam member is formed with an inclined surface 241 that increases in the axial direction as the circumferential direction increases in a position corresponding to the elastic support 251 240 is built in and fixed to the gear box 130 and includes a yoke plug 220 connected to the rotating cam member 240 and the torsion spring 230.

That is, the first hole 320 formed in the yoke plug 220, the rotating cam member 240, so that the first module 320 is integrally coupled and the second module 310 is integrally combined and assembled, respectively. A second hole 242 formed in, a coupling hole 252 formed in the spring cam member 250, a fixing hole 265 is formed in the support yoke 260, respectively, the first module 320 and the second module 310 ).

Accordingly, the operator can assemble and transport in units of the first module 320 and the second module 310, thereby reducing the process during assembly and preventing incorrect assembly or loss of each component.

Here, the first module 320 may include a fastening member 271 that integrally couples the support yoke 260 and the spring cam member 250.

That is, the fastening member 271 is coupled to the coupling hole 252 and the fixing hole 265 to form the first module 320 integrally with the spring cam member 250 and the support yoke 260, the first hole The temporary coupling member 201 is fastened to the 222 and the second hole 242 to form the yoke plug 220 and the rotating cam member 240 as the second module 310.

The temporary coupling member 201 forming the second module 310 may be separated after the second module 310 is assembled to the gear box 130.

First, looking at the first module 320, the spring cam member 250 allows the rotating cam member 240 to be supported while rotating to compensate for the axial play of the support yoke 260 and at the same time When an impact load is generated from the road surface during driving, the impact load transmitted in the axial direction between the rotating cam member 240 and the support yoke 260 is absorbed.

That is, when an impact load is transmitted from the road surface during driving of the vehicle, the spring cam member 250 is an elastic support portion 251 supported on the inclined surface 241 of the rotating cam member 240 while the elastic deformation is performed in the axial direction to transmit the impact. It is supposed to absorb the load.

Here, the spring cam member 250 may be combined with the support yoke 260 without a fastening member as shown in FIG. 12.

That is, the spring cam member 250 is supported on the support yoke 260 and is provided with a body portion 253 that is seated, a coupling hole 252 is formed in the body portion 253, and the support yoke 260 has a coupling hole ( The coupling protrusion 267 coupled to the 252 may be formed so that the spring cam member 250 and the support yoke 260 are press-fitted or fixed after being pressed and cocked.

In addition, a locking groove 258 is formed in the coupling hole 252 of the spring cam member 250, and a locking protrusion 269 is formed in the coupling protrusion 267 of the support yoke 260, so that the locking protrusion 269 is caught. It can be supported and coupled to the groove 258, it may be caulking portion of the engaging projection 269 as described above.

Spring cam member 250 is provided with an extension portion 255 extending in the radial direction on one side of the outer circumferential surface of the body portion 253 formed in an annular shape, the fixing projection of the yoke plug 220 on the outer circumferential side of the extension portion 255 The fixing groove 256 into which the 225 is inserted is formed so that even if the rotating cam member 240 is rotated by the torsion spring 230, the spring cam member 250 can be fixed without being rotated.

In addition, the extension portion 255 is provided with an elastic support portion 251 connected in the circumferential direction with the extension portion 255 is supported on the inclined surface 241 of the rotating cam member 240, as described above, elastically deformed in the axial direction As this is done, the impact load transmitted from the road surface is absorbed.

In the spring cam member 250, two or more elastic support portions 251 are spaced apart in the circumferential direction, and one side end of each elastic support portion 251 is connected in the circumferential direction with the extension portion 255. It is formed to extend spirally from the other end.

In addition, the rotating cam member 240 connected to the yoke plug 220 and the torsion spring 230 has an inclined surface 241 that increases in the axial direction as the circumferential direction of the front surface opposite to the spring cam member 250 increases. This is formed, and these inclined surfaces 241 may be provided in two or more positions corresponding to the elastic support portion 251, respectively.

That is, when the clearance increases due to wear of the support yoke 260, the rotating cam member 240 is rotated by the torsion spring 230 while being rotated in the axial direction by the difference in the protrusion amount of the inclined surface 241 supported by the elastic support 251. While supporting, the spring cam member 250 and the support yoke 260 are pushed to compensate for the clearance.

In addition, the stepped portion 245, which is a portion where the inclined surface 241 and the inclined surface 241 are connected in the circumferential direction and is stepped in the axial direction, is supported on the end portion of the elastic support portion 251, so that the second module 310 is When combined with the provisional coupling member 201, the rotating cam member 240 does not rotate, and the torsion spring 230 is elastically compressed and combined.

The yoke plug 220 has a first receiving portion 221 in which a spring cam member 250 is accommodated on an inner circumferential surface of one end portion, and a fixing protrusion 225 protruding in a radial direction on the inner circumferential surface of the first receiving portion 221 Is formed, a fixing groove 256 into which the fixing protrusion 225 is inserted is formed on the outer circumferential surface of the extension portion 255.

And, the yoke plug 220 is formed on the inner end of the first receiving portion 221, the second receiving portion 223 is formed on the rotating cam member 240 is accommodated, the inner end of the second receiving portion 223 A third receiving portion 224 in which the torsion spring 230 is accommodated is formed.

The second receiving portion 223 is formed with a support protrusion 224b protruding in the axial direction, and a first stepped portion 243a supported by the support protrusion 224b is formed on the rotating cam member 240, so that the yoke plug is formed. When the rotating cam member 240 and the torsion spring 230 are coupled to the 220, the rotating cam member 240 can rotate only in one direction.

In addition, a locking groove 224a is formed in the third receiving portion 224 so that one end 231a of the torsion spring 230 is seated on the locking groove 224a, and the rotating cam member 240 has a torsion spring ( A second stepped portion 243b in which the other end portion 231b of 230 is supported is formed, so that one end portion 231a and the other end portion 231b of the torsion spring 230 are elastically compressed and combined.

In addition, the rotating cam member 240 connected to the yoke plug 220 and the torsion spring 230 has an inclined surface 241 that increases in the axial direction as the circumferential direction of the front surface opposite to the spring cam member 250 increases. This is formed, and these inclined surfaces 241 may be provided in two or more positions corresponding to the elastic support portion 251, respectively.

That is, when the clearance increases due to wear of the support yoke 260, the rotating cam member 240 is rotated by the torsion spring 230 while being rotated in the axial direction by the difference in the protrusion amount of the inclined surface 241 supported by the elastic support 251. While supporting, the spring cam member 250 and the support yoke 260 are pushed to compensate for the clearance.

In addition, the stepped portion 245, which is a portion in which the inclined surface 241 and the inclined surface 241 are connected in a circumferential direction and is stepped in the axial direction, is supported at the end portion of the elastic support portion 251, so that the plug module is coupled to the provisional assembly member. When the rotating cam member 240 does not rotate, the torsion spring 230 is elastically compressed and combined.

After the second module 310 integrally coupled to the provisional coupling member 201 is assembled to the gear box 130, the provisional coupling member 201 can be separated, as shown in FIG. A cap member may be coupled to the first hole 222 to prevent foreign substances from entering the outside.

According to the present embodiments having such a structure and shape, it prevents noise generated due to an increase in play due to wear of the support yoke or caused by an impact that is reversely input from the road surface, and provides a comfortable steering feeling to the driver during steering. It has the effect of being able to.

In addition, the assembly process is shortened when assembling the vehicle, and it is possible to prevent incorrect assembly or loss of each component.

In the above, even if all components constituting the present embodiments are described as being combined or operated as one, the present embodiments are not necessarily limited to these embodiments. That is, within the scope of the objectives of the present embodiments, all of the components may be selectively combined and operated.

In addition, the terms "include", "consist" or "have" as described above means that the corresponding component can be inherent, unless specifically stated otherwise, to exclude other components. It should not be interpreted as being able to further include other components. All terms, including technical or scientific terms, unless defined otherwise, have the same meaning as commonly understood by a person skilled in the art to which this embodiment belongs. Commonly used terms, such as predefined terms, should be interpreted as being consistent with the meaning in the context of the related art, and are not to be interpreted as ideal or excessively formal meanings unless explicitly defined in the present embodiments.

The above description is merely illustrative of the technical spirit of the embodiments, and those skilled in the art to which the embodiments pertain may have various modifications and variations without departing from the essential characteristics of the embodiments. will be. Accordingly, the disclosed embodiments are not intended to limit the technical spirit of the present embodiments, but to explain them, and the scope of the technical spirit of the present embodiments is not limited by these embodiments. The scope of protection of the present embodiments should be interpreted by the claims below, and all technical spirits within the scope equivalent thereto should be interpreted as being included in the scope of rights of the present embodiments.

130: gearbox 140: rack bar
210: plug module 220: yoke plug
230: Torsion spring 240: Rotary cam member
250: spring cam member 260: support yoke
310: second module 320: first module

Claims (20)

It includes a support yoke inserted into the gear box to support the rack bar, and a plug module for supporting the support yoke in the direction of the rack bar,
The plug module,
A spring cam member that supports the support yoke and is formed with an elastic support portion that increases in a distance from the rear surface of the support yoke in a circumferential direction;
A rotating cam member having an inclined surface in which an amount of protrusion in the axial direction increases in a circumferential direction at a position corresponding to the elastic support portion;
A yoke plug in which the rotating cam member and the spring cam member are built-in and fixed to the gear box and connected to the rotating cam member by a torsion spring;
Rack bar support device of a vehicle steering apparatus comprising a. According to claim 1,
The plug module is a rack bar support device of an automobile steering apparatus including a spring cam member and a rotating cam member and a provisional coupling member that integrally couples the yoke plug. According to claim 1,
A rackbar support device for a vehicle steering system, characterized in that a first receiving portion in which the spring cam member is accommodated is formed on an inner circumferential surface of one end of the yoke plug, and a fixing protrusion protruding in a radial direction is formed on an inner circumferential surface of the first receiving portion. . The method of claim 3,
A rack bar support device for an automobile steering device, characterized in that a fixing groove into which the fixing protrusion is inserted is formed on an outer circumferential surface of the spring cam member. The method of claim 3,
The yoke plug is characterized in that a second accommodating portion in which the rotating cam member is accommodated is formed at an inner end of the first accommodating portion, and a third accommodating portion in which the torsion spring is accommodated is formed at an inner end of the second accommodating portion. Rackbar support device for automobile steering system. The method of claim 5,
A rack bar support device for an automobile steering apparatus, characterized in that a support protrusion protruding in an axial direction is formed in the second accommodating part, and a first stepped part supported by the support protrusion is formed in the rotating cam member. The method of claim 5,
A rack bar supporting device for a vehicle steering apparatus, wherein a locking groove is formed in the third receiving portion and one end of the torsion spring is seated and supported on the locking groove. The method of claim 7,
A rack bar support device for an automobile steering device, wherein the rotating cam member is formed with a second stepped part that supports the other end of the torsion spring. According to claim 1,
The spring cam member is supported by the support yoke and is provided with a body portion to be seated, and the elastic support portion is formed in a circumferential direction in an extension portion extending in a radial direction from the outer peripheral surface of the body portion. . The method of claim 9,
The spring cam member is a vehicle characterized in that the elastic support is spaced apart in the circumferential direction and two or more are disposed, and each elastic support is connected in one circumferential direction with the extension part and extends spirally from one end to the other. Rackbar support for steering. A first module is inserted into the gear box to support the rack bar, and a second module to support the first module in the rack bar direction,
The first module,
A support yoke supporting the rack bar in a pinion gear direction;
Supporting the support yoke and includes a spring cam member formed with an elastic support portion that increases in the circumferential direction as the distance from the rear of the support yoke increases,
The second module,
A rotating cam member having an inclined surface in which an amount of protrusion in the axial direction increases in a circumferential direction at a position corresponding to the elastic support portion;
A rack bar support device for an automobile steering apparatus including a yoke plug in which the rotating cam member is built in and fixed to the gear box and connected to the rotating cam member by a torsion spring. The method of claim 11,
The first module is a rack bar support device of a vehicle steering apparatus including a fastening member for integrally coupling the support yoke and the spring cam member. The method of claim 11,
The spring cam member is supported by the support yoke and is provided with a body portion to be seated, a coupling hole is formed in the body portion, and the support yoke is provided with a coupling protrusion that is coupled to the coupling hole. Support device. The method of claim 13,
The engaging hole is formed in the engaging hole, the engaging projection is formed in the engaging projection rack bar support device of a vehicle steering apparatus, characterized in that supported by the engaging groove. The method of claim 13,
The spring cam member is a rack bar support device of a vehicle steering apparatus, characterized in that the elastic support portion is formed in a circumferential direction in an extension portion extending in the radial direction from the outer circumferential surface of the body portion. The method of claim 15,
The spring cam member is a vehicle characterized in that the elastic support portions are spaced apart in the circumferential direction, and two or more are disposed, and each elastic support portion is circumferentially connected to the extension portion and extends spirally from one end to the other. Rackbar support for steering. The method of claim 15,
On the inner circumferential surface of one end of the yoke plug, a first accommodating portion for receiving the spring cam member is formed, and on the inner circumferential surface of the first accommodating portion, a fixing protrusion protruding in a radial direction is formed, and the fixing projection is inserted into the outer circumferential surface of the extension portion. Rack bar support device of a vehicle steering system, characterized in that the fixing groove is formed. The method of claim 17,
The yoke plug is characterized in that a second accommodating portion in which the rotating cam member is accommodated is formed at an inner end of the first accommodating portion, and a third accommodating portion in which the torsion spring is accommodated is formed at an inner end of the second accommodating portion. Rackbar support device for automobile steering system. The method of claim 18,
A rack bar support device for an automobile steering apparatus, characterized in that a support protrusion protruding in an axial direction is formed in the second accommodating part, and a first stepped part supported by the support protrusion is formed in the rotating cam member. The method of claim 18,
An automobile characterized in that a locking groove is formed in the third receiving portion, an end portion of the torsion spring is seated in the locking groove, and a second stepped portion is formed in the rotating cam member to support the other end of the torsion spring. Rackbar support for steering.

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