KR101517078B1 - Torque transmitting apparatus for telescopic steering shaft of vehicle - Google Patents
Torque transmitting apparatus for telescopic steering shaft of vehicle Download PDFInfo
- Publication number
- KR101517078B1 KR101517078B1 KR1020140116077A KR20140116077A KR101517078B1 KR 101517078 B1 KR101517078 B1 KR 101517078B1 KR 1020140116077 A KR1020140116077 A KR 1020140116077A KR 20140116077 A KR20140116077 A KR 20140116077A KR 101517078 B1 KR101517078 B1 KR 101517078B1
- Authority
- KR
- South Korea
- Prior art keywords
- ball
- steering shaft
- support
- block
- torque
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/16—Steering columns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/001—Mechanical components or aspects of steer-by-wire systems, not otherwise provided for in this maingroup
- B62D5/005—Mechanical components or aspects of steer-by-wire systems, not otherwise provided for in this maingroup means for generating torque on steering wheel or input member, e.g. feedback
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2306/00—Other features of vehicle sub-units
- B60Y2306/03—Lubrication
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2306/00—Other features of vehicle sub-units
- B60Y2306/09—Reducing noise
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2410/00—Constructional features of vehicle sub-units
- B60Y2410/102—Shaft arrangements; Shaft supports, e.g. bearings
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Steering Mechanism (AREA)
- Steering Controls (AREA)
Abstract
The present invention is characterized in that a cylindrical protrusion is formed on a cylinder-shaped body constituting a torque transmission device so as to support both sides of the ball in a circumferential direction, and an outer support block (Neighboring support blocks) are connected to each other. Therefore, when the steering shaft is rotated (steering operation), not only the torque transmitted from the circumferential direction of the ball can be accurately transmitted but also the ball or the body The durability of the steering shaft can be improved, and particularly, the rigidity of the steering shaft can be sufficiently sustained.
Particularly, the present invention makes it possible to contain oil, grease or the like in a predetermined amount on a surface which is substantially in contact with the ball, such as a ball supporting hole and an outer supporting block, thereby absorbing the friction smoothly between the ball and the steering shaft So that a smooth steering operation can be performed together with suppression of noise generation.
In addition, the present invention proposes an outer supporting block formed on both sides of a ball in the longitudinal direction of the body as a block shape having a frontal shape of a polygonal shape, so that a stretching force generated when the variable- The rotation can be sufficiently stably supported.
Description
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a torque transmitting device for a variable steering shaft for a vehicle, and more particularly, The supporting protrusions can stably support the ball in the circumferential direction to transmit the torque and form the outer supporting block in the longitudinal direction of the body with respect to the ball supporting hole, So that the length of the steering shaft can be stably controlled by connecting the support blocks to each other.
Generally, a steering wheel used for turning the vehicle is connected to the steering shaft between the steering gear box and the steering gear box. At this time, the steering shaft rotates the gear in the steering gear box by the amount of rotation in which the driver rotates the steering wheel by hand, thereby returning the vehicle to the predetermined direction.
The length of the steering shaft is basically determined according to the type of the vehicle. In recent years, however, a variable steering shaft (Telescopic) capable of adjusting the angle and length of the steering shaft with reference to the steering gear box, Steering Shaft). Patent Literature 1 and Patent Literature 2 disclose a technique relating to a telescopic shaft in which the length of such a steering shaft can be expanded and contracted.
Patent Document 1 relates to a torque transmitting device for a telescopic shaft of a steering apparatus for a vehicle having an inner shaft which slides relative to each other along a common axis direction and a hollow outer shaft into which the inner shaft is inserted, The torque transmission of the telescopic shaft of the steering apparatus of the vehicle is improved so that the sliding load of the inner and outer shafts is kept constant at all times by regulating a decrease in the operation feeling of the steering apparatus as the sliding load of the inner and outer shafts becomes unstable according to the occurrence Device. ≪ / RTI >
Patent Document 2 relates to a telescopic bushing for realizing a telescopic function of a steering column of an automobile. The telescopic bushing is for reducing the clearance between the inner jacket and the outer jacket of the telescopic steering column and is a cylindrical shape that is disposed between the outer circumferential surface of the inner jacket and the inner circumferential surface of the outer jacket. And a plurality of elastic members provided on the body to elastically support the inner peripheral surface of the outer jacket.
However, the torque transmitting device (bushing) mounted on a conventional steering shaft (column) has the following problems.
(1) The ball is not supported on both portions of the (electrically powered) ball portion that transmit torque as the substantially variable steering shaft is rotated, that is, both sides in the circumferential direction with respect to the ball.
(2) This is a structure in which the ball is not supported in the circumferential direction but supported only in a direction in which the torque transmitting device (bushing) is fitted to the steering shaft (column), in a state where the ball is mounted on the torque transmitting device .
(3) However, the length of the torque transmission device (bushing) is also important, but the original function of the steering shaft (column) is more frequent when the vehicle rotates the steering wheel for turning, such as turning left or right. A strong torque is applied between the ball and the portion in contact with the circumferential portion on both sides of the hole.
(4) Thus, the torque applied in the circumferential direction may deform the ball to make it impossible to perform the original function or to break the hole for mounting the ball, resulting in damage to the torque transmitting device (bushing).
(5) In order to prevent breakage of the hole for mounting the ball and the ball, the body of the torque transmitting device (bushing) should be made thicker or made of a material stronger than the conventional one.
(6) This not only requires a great deal of cost to manufacture a torque transmitting device (bushing), but also increases the overall weight of the vehicle, which results in one factor that increases the fuel consumption of the vehicle.
(7) In addition, the portion formed in the longitudinal direction for supporting the ball can not secure sufficient rigidity and serves as a factor that can not stably support the ball.
(8) If the steering shaft is stretched or contracted according to the driver's body shape, the ball does not perform a smooth rolling action due to the rolling action, and noise is generated when the length of the steering shaft is adjusted.
SUMMARY OF THE INVENTION The present invention has been made in view of this point, and it is an object of the present invention to provide a torque transmission device in which a cylindrical body is formed with supporting protrusions so as to support both sides of the balls in the circumferential direction, (Steering operation), it is possible not only to accurately transmit the torque received from the circumferential direction of the ball, but also to transmit the torque to the ball or the body It is an object of the present invention to provide a torque transmitting device for a variable steering shaft for a vehicle which is capable of improving durability by preventing breakage of a steering shaft,
Particularly, the present invention makes it possible to contain oil, grease or the like in a predetermined amount on a surface which is substantially in contact with the ball, such as a ball supporting hole and an outer supporting block, thereby absorbing the friction smoothly between the ball and the steering shaft So that a smooth steering operation can be performed in addition to the suppression of the occurrence of noise. Another object of the present invention is to provide a torque transmitting device for a variable steering shaft for a vehicle.
In addition, the present invention proposes an outer supporting block formed on both sides of a ball in the longitudinal direction of the body as a block shape having a frontal shape of a polygonal shape, so that a stretching force generated when the variable- Another object of the present invention is to provide a torque transmitting device for a variable steering shaft for a vehicle which can rotate and support the steering shaft sufficiently stably.
In order to accomplish the above object, the present invention provides a torque transmitting device for a variable steering shaft for a vehicle, comprising: at least two grooves S1, S2) are disposed between an inner steering shaft (I) and an outer steering shaft (O), which are formed in parallel to each other in the longitudinal direction, and the cylinder-shaped body (100) having a predetermined thickness And at least two rows of
Particularly, each of the
Further, the
The outer supporting
Finally, an
The torque transmitting device for a variable steering shaft for a vehicle according to the present invention has the following effects.
(1) By further forming a support protrusion along the circumferential direction between the ball support holes formed adjacent to each other in the circumferential direction, the circumferential torque applied to the ball as the steering shaft is turned for changing the direction of the vehicle is supported The ball can be supported through the projection to accurately transmit the torque.
(2) Since the torque applied to the ball in the circumferential direction is dispersed and supported, the ball supporting hole for supporting the ball or the deformation of the ball can be prevented from being broken, thereby enhancing the durability of the torque transmitting device.
(3) In particular, it is possible to easily manufacture a support protrusion by supporting a ball circumferentially on the surface of a body to transmit a torque, and to improve the durability of the torque transmission device while minimizing manufacturing cost Effect can be expected.
(4) By forming the oil pockets so that oil, grease, or the like can be stored in a predetermined amount so that the rolling action of the ball can be well performed on the surfaces of the ball supporting hole and the outer supporting block, When the length of the variable steering shaft is adjusted, the ball smoothly rolls, and the lubricating action is smoothly performed between the shafts. This not only improves the durability by reducing the abrasion phenomena occurring between them, but also reduces noise that may be caused by friction between the components, thereby creating a pleasant driving environment.
(5) The outer supporting block and the inner supporting block, which support the ball in the longitudinal direction of the body, are formed into a polygonal front face shape so that the formed area of the outer supporting block formed in the clearance between the inner steering shaft and the outer steering shaft The contact area with the ball is widened and the ball can be stably supported.
(6) As the contact area between the ball and the outer support block and the inner support block is increased, the outer support block and the inner support block are stable and stable against the stretching force generated by adjusting the length of the shaft. So that the durability of the torque transmitting device can be enhanced.
(7) Since the adjacent outer supporting blocks are connected to each other, even if the ball is subjected to the stretching force generated when the length of the variable steering shaft is adjusted, the stretching forces can be sufficiently supported by the outer supporting blocks connected to each other.
(8) It is possible to prevent deformation or breakage of the ball support hole and the outer support block and the inner support block, thereby further enhancing the durability of the torque transmitting device.
1 is an exploded perspective view showing an example of an inner steering shaft to which a torque transmitting device for a variable steering shaft for a vehicle according to Embodiment 1 of the present invention is applied.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a steering torque transmitting apparatus, and more particularly,
3 is a perspective view showing a state where a ball is mounted on a ball support hole of a torque transmitting device according to Embodiment 1 of the present invention.
4 is a front view for showing a configuration of a body according to Embodiment 1 of the present invention.
5 is a partially enlarged perspective view of a torque transmitting device according to a second embodiment of the present invention.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should properly define the concept of the term to describe its invention in the best possible way The present invention should be construed in accordance with the spirit and scope of the present invention.
Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention. Thus, various equivalents And variations may be present.
1 to 4, a torque transmitting device for a variable steering shaft for a vehicle according to a first embodiment of the present invention includes a body (not shown) having a cylinder shape and configured such that a plurality of
Particularly, since the outer supporting
Hereinafter, this configuration will be described in more detail as follows.
As shown in Figs. 1 and 2, the torque transmitting device according to the present invention is used for a variable steering shaft, in which the variable steering shaft is in the form of a double tube, in which the inner steering shaft I is fitted to the outer steering shaft O, As shown in FIG. Each of the inner steering shaft I and the outer steering shaft O has grooves S1 and S2 formed at predetermined intervals along the longitudinal direction on the surfaces thereof facing each other, The torque transmission device according to the present invention is inserted into the torque transmission device and the torque transmission device is fitted along the grooves S1 and S2 to adjust the length of the shaft along the rolling axis. ) To constitute a
The
1 to 4, the
At least two rows of the
Meanwhile, each of the
In the preferred embodiment of the present invention, the
The supporting
Therefore, in the present invention, the
Particularly, the
The support protrusions 120 are formed on the outer surface of the
1 to 4, the outer support blocks 130 are formed in pairs in the longitudinal direction of the
In particular, the outer supporting
In the preferred embodiment of the present invention, the outer supporting
Further, in the preferred embodiment of the present invention, it is preferable that the outer supporting
In the preferred embodiment of the present invention, it is preferable that the outer supporting
The inner supporting
In the preferred embodiment of the present invention, the inner supporting
The present invention as described above can accurately transmit torque generated by rotating the variable steering shaft for turning of the vehicle through the support protrusions, and particularly to the stretching force generated by adjusting the length of the variable steering shaft, Since the blocks are connected to one another, they can withstand this stretching force sufficiently to prevent breakage of balls or bodies caused by such torques or stretching forces.
As shown in FIG. 5, the torque transmission device for a variable steering shaft for a vehicle according to the second embodiment of the present invention further includes an
5, the torque transmitting device according to the second embodiment is formed with an
Further, the
As described above, according to the present invention, oil or grease can be supplied from the oil pocket to smoothly operate the ball when the ball is rolling, such as the length of the variable steering shaft through the oil pocket, The steering shaft can be operated smoothly and smoothly.
100: Body
110: Hole heat
111: Ball
112: Ball supporting hole
120: support projection
130: Outer support block
140: Inner support block
Claims (5)
At least two rows of holes 110 are formed on the outer surface of the cylindrical body 100 having a predetermined thickness at predetermined intervals in parallel with each other in the longitudinal direction of the body 100, , At least two ball support holes 112 are formed at predetermined intervals and inserted and inserted into the balls 111,
The support protrusions 120 are protruded to support the ball 111 when the balls 111 are received in the circumferential direction by connecting the two ball support holes 112 adjacent to each other along the circumference on the outer surface, The outer supporting blocks (111, 112) are rotatably supported in contact with the balls (111) so that the outer ends of the balls (111) are exposed to the outside on both sides of the longitudinal direction of the body 130);
And an inner supporting block 140 protruding from the inner surface of the inner supporting block 140 to abut the ball 111 at a position corresponding to the outer supporting block 130,
The outer supporting blocks 130 are connected to each other by a connecting part 131 having a smaller size than the two outer supporting blocks 130 in the longitudinal direction of the body 100 And the torque transmission mechanism of the variable steering shaft for a vehicle.
Each of the ball support holes 112 formed in the two hole rows 110 formed adjacent to each other is formed to face each other on the imaginary circumference formed on the body 100 or to be offset from each other. Shaft torque transfer device.
Wherein the outer support block (130) and the inner support block (140) are each formed as a polygonal block having a frontal shape.
Wherein an oil pocket (141) is further formed on the inner surface of the ball support hole (112) in contact with the ball (111) and on the surface of the outer support block (130).
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020140116077A KR101517078B1 (en) | 2014-09-02 | 2014-09-02 | Torque transmitting apparatus for telescopic steering shaft of vehicle |
PCT/KR2015/001675 WO2016035951A1 (en) | 2014-09-02 | 2015-02-23 | Torque transmitting apparatus for variable steering shaft of vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020140116077A KR101517078B1 (en) | 2014-09-02 | 2014-09-02 | Torque transmitting apparatus for telescopic steering shaft of vehicle |
Publications (1)
Publication Number | Publication Date |
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KR101517078B1 true KR101517078B1 (en) | 2015-05-06 |
Family
ID=53393703
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020140116077A KR101517078B1 (en) | 2014-09-02 | 2014-09-02 | Torque transmitting apparatus for telescopic steering shaft of vehicle |
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KR (1) | KR101517078B1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101639036B1 (en) * | 2016-04-25 | 2016-07-12 | 서한산업(주) | Telescopic Shaft |
KR101750684B1 (en) * | 2016-04-08 | 2017-06-27 | 태림산업(주) | Intermediate shaft |
KR20190031379A (en) | 2017-09-15 | 2019-03-26 | 태림산업(주) | Separable torque transmitting apparatus |
US11091189B2 (en) * | 2017-10-19 | 2021-08-17 | Thyssenkrupp Presta Ag | Steering shaft for a motor vehicle |
US11318982B2 (en) * | 2020-01-17 | 2022-05-03 | Jtekt Corporation | Steering column device and manufacturing method for the same |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20080110220A (en) * | 2007-06-15 | 2008-12-18 | 현대모비스 주식회사 | Telescopic structure of steering column |
KR20100022831A (en) * | 2008-08-20 | 2010-03-03 | (주)화백엔지니어링 | Device and method for forming oil pocket of minute configuration on a curved friction surface |
KR100972759B1 (en) * | 2008-09-02 | 2010-08-03 | 남양공업주식회사 | Apparatus for transferring torque between telescopic shafts of automobile |
-
2014
- 2014-09-02 KR KR1020140116077A patent/KR101517078B1/en active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20080110220A (en) * | 2007-06-15 | 2008-12-18 | 현대모비스 주식회사 | Telescopic structure of steering column |
KR20100022831A (en) * | 2008-08-20 | 2010-03-03 | (주)화백엔지니어링 | Device and method for forming oil pocket of minute configuration on a curved friction surface |
KR100972759B1 (en) * | 2008-09-02 | 2010-08-03 | 남양공업주식회사 | Apparatus for transferring torque between telescopic shafts of automobile |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101750684B1 (en) * | 2016-04-08 | 2017-06-27 | 태림산업(주) | Intermediate shaft |
KR101639036B1 (en) * | 2016-04-25 | 2016-07-12 | 서한산업(주) | Telescopic Shaft |
KR20190031379A (en) | 2017-09-15 | 2019-03-26 | 태림산업(주) | Separable torque transmitting apparatus |
US11091189B2 (en) * | 2017-10-19 | 2021-08-17 | Thyssenkrupp Presta Ag | Steering shaft for a motor vehicle |
US11318982B2 (en) * | 2020-01-17 | 2022-05-03 | Jtekt Corporation | Steering column device and manufacturing method for the same |
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