JP2009051353A - Position adjusting type steering device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a position adjusting type steering device with less vibration. <P>SOLUTION: This steering device 1 is provided with inner tube 12 and outer tube 11 relatively slidably fitted in an axial direction to rotatably support a steering shaft 4, and a pressing member 21 rotating according to a rotation operation of an operating lever 22. When the operating lever 22 is rotated and operated in a prescribed direction, the pressing member 21 presses an outer periphery of the inner tube 12 through an opening part 49 of the outer tube 11. The pressing member 21 has a plurality of pressing parts 54 to press the outer periphery of the inner tube 12 at a plurality of positions at intervals in a peripheral direction Y1 of the inner tube 12. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a position-adjustable steering apparatus that can adjust the position of a steering member.

As a position-adjustable steering device, the tilt steering device that adjusts the height of the steering wheel by changing the tilt angle of the steering shaft, and the height of the steering wheel by adjusting the steering shaft and steering column in the axial direction A telescopic steering device is known.
For example, in Patent Document 1 below, an inner tube and an outer tube that are fitted so as to be slidable relative to each other in the axial direction and rotatably support a steering shaft, and a pressing member that rotates as the operating lever rotates (backlash removal). A position-adjustable steering device including a cam) is disclosed. In the position-adjustable steering device described in Patent Document 1, the pressing member presses the outer periphery of the inner tube in accordance with the turning operation of the operating lever, whereby the inner tube is pressed against the outer tube. The play between the inner tube and the outer tube can be removed.
JP 2001-322552 A

However, in the position-adjustable steering device described in Patent Document 1, there is a risk that the vibration of the steering column will increase during idling, for example.
The present invention has been made based on such a background, and an object thereof is to provide a position-adjustable steering apparatus with less vibration.

In the above prior art, the inventor of the present invention has low support rigidity as the entire steering column because the pressing member is in contact with the inner tube at one location in the circumferential direction of the inner tube, and as a result, the resonance of the entire steering column is reduced. We thought that the frequency was low and the vibration during idling was large.
The present invention has been made based on such knowledge, and the present invention is an inner tube that is fitted so as to be slidable relative to the axial direction (X1) for telescopic adjustment and rotatably supports the steering shaft (4). (12) and an outer tube (11), an outer bracket (18) having a pair of side plates (30) and being fixed to the vehicle body (13), and a pair of side plates (23) being fixed to the outer tube. An inner bracket (17), a support shaft (38) that penetrates the side plates of both brackets, an operation lever (22) that is rotated around the axis of the support shaft, A locking mechanism (19) for releasably locking the inner bracket by pressing the corresponding side plates of the bracket together, and a pressing member (21) provided so as to be able to rotate together with the support shaft. The pressing member is configured to press the outer periphery of the inner tube through the opening (49) provided in the outer tube when the inner bracket is locked in accordance with the turning operation of the operation lever. In the position-adjustable steering device (1), the pressing member includes a plurality of pressing portions (54) capable of pressing the inner tube at positions spaced apart in the circumferential direction (Y1) of the inner tube. is there.

  According to the present invention, the inner tube can be pressed against the outer tube at a plurality of positions spaced apart in the circumferential direction of the inner tube by the plurality of pressing portions of the pressing member, so that the inner tube and the pressing member are in contact with each other. In this state, the backlash between the inner tube and the outer tube can be removed, and the support rigidity for the entire steering column including the inner tube can be improved to increase the resonance frequency. Therefore, in a state where the inner tube and the pressing member are in contact with each other, it is possible to prevent the steering column (a member for supporting the steering shaft including the inner tube and the outer tube) from resonating during idling, for example.

  In the above description, the alphanumeric characters in parentheses represent reference numerals of corresponding components in the embodiments described later, but the scope of the claims is not limited by these reference numerals.

Embodiments of the present invention will be specifically described below with reference to the drawings.
FIG. 1 is a schematic diagram showing a schematic configuration of a position-adjustable steering apparatus 1 according to an embodiment of the present invention.
Referring to FIG. 1, a position-adjustable steering apparatus 1 includes a steering member 2 such as a steering wheel, and a steering mechanism 3 that steers steered wheels (not shown) in conjunction with the steering of the steering member 2. ing. As the steering mechanism 3, for example, a rack and pinion mechanism is used.

  The steering member 2 and the steering mechanism 3 are mechanically connected via a steering shaft 4, an intermediate shaft 5, and the like. The rotation of the steering member 2 is transmitted to the steering mechanism 3 via the steering shaft 4 and the intermediate shaft 5. Further, the rotation transmitted to the steering mechanism 3 is converted into an axial movement of a rack shaft (not shown). Thereby, a steered wheel is steered.

  The steering shaft 4 has a cylindrical upper shaft 6 and a lower shaft 7 which are fitted so as to be able to slide relative to each other by, for example, spline fitting or serration fitting. The steering member 2 is connected to the upper end portion of the upper shaft 6. Further, the steering shaft 4 can expand and contract in the axial direction X1. The steering shaft 4 is inserted through the inner periphery of a cylindrical steering column 8 and is rotatably supported by the steering column 8 via a plurality of bearings 9 and 10.

The steering column 8 has an outer tube 11 as an upper tube fitted so as to be relatively slidable, and an inner tube 12 as a lower tube. The steering column 8 can be expanded and contracted in the axial direction.
The outer tube 11 rotatably supports the upper shaft 6 via the bearing 9 and is connected to the upper shaft 6 via the bearing 9 so as to be able to move along the axial direction X1 of the steering shaft 4.

Further, on the outer periphery of the inner tube 12, a lower bracket 16 that is rotatably supported via a tilt support shaft 15 is fixed to a fixed bracket 14 that is fixed to the vehicle body 13. The steering column 8 and the steering shaft 4 are rotatable about a tilting support shaft 15 as a fulcrum.
The height of the steering member 2 can be adjusted (so-called tilt adjustment) by rotating the steering shaft 4 and the steering column 8 with the tilting support shaft 15 as a fulcrum. Further, the height of the steering member 2 can be adjusted by expanding and contracting the steering shaft 4 and the steering column 8 in the axial direction X1 (so-called telescopic adjustment).

  A column side bracket 17 is fixed to the outer tube 11, and the column side bracket 17 and the vehicle body side bracket 18 fixed to the vehicle body 13 are connected by a lock mechanism 19, so that the position of the steering column 8 is the vehicle body. 13 and the position of the steering member 2 is fixed. In this embodiment, the column side bracket 17 functions as an inner bracket, and the vehicle body side bracket 18 functions as an outer bracket.

Further, the lock mechanism 19 includes a pressing member 21 having a cam-like protruding portion 20, and the inner tube 12 is pressed against the outer tube 11 by rotating the pressing member 21 by the operation of the operation lever 22. An inner tube 12 is fixed to the tube 11.
FIG. 2 is a schematic cross-sectional view of the position-adjustable steering apparatus 1 along the line II-II in FIG. FIG. 3 is a schematic external view of a part of the position-adjustable steering apparatus 1 as viewed from the direction of arrow III in FIG. FIG. 4 is a front view of the column side bracket 17, and FIG. 5 is a front view of the vehicle body side bracket 18. FIG. 6 is an enlarged view of a part of FIG.

  Referring to FIG. 2, the column side bracket 17 is a groove-shaped member that opens upward, and is symmetric in FIG. That is, the column side bracket 17 includes a pair of side plates 23 that face each other in the left-right direction in FIG. 2 and a connecting plate 24 that connects the lower ends of the pair of side plates 23. Each side plate 23 and the connecting plate 24 are continuously connected to each other via the lower curved portion 25.

  Referring to FIGS. 2 and 3, each side plate 23 has a substantially rectangular shape as shown in FIG. 3, and a telescopic slot 26 that is elongated in the axial direction X1 is formed at the lower end portion thereof. ing. The steering shaft 4 and the steering column 8 can be expanded and contracted within the range of the axial length of the long hole 26. As shown in FIG. 2, the long holes 26 formed in the side plates 23 face each other.

  Further, as shown in FIG. 2, the upper end portion of each side plate 23 is bent inside the column side bracket 17 to form a bent portion 27. Each side plate 23 includes a bent portion 27 and a main body portion 28. Each side plate 23 has a bent portion 27 fixed to the outer peripheral surface of the outer tube 11. The bent portion 27 and the main portion 28 are continuously connected via the upper curved portion 29. The main body 28 is a portion corresponding to between the lower bending portion 25 and the upper bending portion 29 (a portion corresponding to between the two-point difference line L1 and the two-point difference line L2 shown in FIG. 3).

  As shown in FIG. 2, the outer surface 28a of the main body 28 of each side plate 23 is inclined in a tapered shape so that the distance between the outer surfaces 28a, 28a becomes narrower as it goes downward. That is, as shown in FIG. 4, the distance between the outer surfaces 28 a and 28 a of the main body 28 is continuously narrowed toward the lower side, and between the outer surfaces 28 a and 28 a at the upper end 281 of the main body 28. The first interval W1 is a predetermined amount wider than the second interval W2 that is the interval between the outer surfaces 28a, 28a at the lower end 282 of the main body 28.

  2 and 3, the vehicle body side bracket 18 is a generally groove-shaped member that opens downward as shown in FIG. 2, and a pair of side plates 30 facing each other in the left-right direction in FIG. The connecting plate 31 includes a connecting plate 31 that connects the upper ends of the pair of side plates 30 and a plate-like mounting stay 32 that is fixed to the upper surface of the connecting plate 31 and extends substantially in the left-right direction. The steering shaft 4, the steering column 8, and the column side bracket 17 are arranged between a pair of side plates 30 of the vehicle body side bracket 18 in FIG. The vehicle body side bracket 18 is fixed to the vehicle body 13 via a pair of attachment bodies 33 connected to the attachment stay 32.

  Each mounting body 33 and the mounting stay 32 are connected by a breakable synthetic resin pin 34 that penetrates the mounting stay 32 in the vertical direction, and each mounting body 33 is fixed to the vehicle body 13 by a fixing bolt 35. Has been. As shown in FIG. 3, the mounting stay 32 is formed with a pair of notches 36 extending from the end on the steering member 2 side along the axial direction X1. The heads of the pair of fixing bolts 35 are respectively disposed in the corresponding notches 36.

  Further, as shown in FIG. 2, each side plate 30 has an inner side surface 30b facing the outer side surface of the corresponding side plate 23 of the column side bracket 17, and a lower end of the side plate 30 has a longitudinally long tilt. A circular arc-shaped long hole 37 is formed. The arc-shaped long holes 37 formed in the side plates 30 face each other. Further, as shown in FIG. 3, each side plate 30 is disposed such that the arc-shaped long hole 37 intersects the long hole 26 of the side plate 23 corresponding to the side plate 30. As shown in FIG. 2, the support shaft 38, which is a part of the lock mechanism 19, passes through a pair of telescopic long holes 26 and a pair of tilted arc-shaped long holes 37 in the left-right direction.

  Referring to FIG. 2, the lock mechanism 19 sandwiches the vehicle body side bracket 18 in the left-right direction in FIG. 2 to hold the column side bracket 17 on the vehicle body side bracket 18 and presses the inner tube 12 to For fixing the inner tube 12 to the tube 11, the support shaft 38, a nut 39 screwed into a threaded portion formed at one end of the support shaft 38, and the outer periphery of the support shaft 38 An annular cam 40 and an annular cam follower 41 that are fitted to each other, and a pressing member 21 for pressing the inner tube 12 are included.

  The cam 40 and the cam follower 41 are disposed on the head 38a side of the support shaft 38, and the end portion 42 of the cam 40 and the end portion 43 of the cam follower 41 on which a plurality of cam protrusions are formed face each other. The pressing member 21 is coupled between the pair of side plates 23 of the column side bracket 17 so as to be able to rotate along with the axially intermediate portion of the shaft portion 38 b of the support shaft 38. An intervening member 44 such as a needle bearing or a washer is interposed between the nut 39 and the pressing member 21.

The interposition member 44 is in contact with the outer surface 30a of one side plate 30 (the right side plate 30 in FIG. 2) of the vehicle body side bracket 18, and the contact surface 44a of the interposition member 44 in contact with the outer surface 30a is illustrated in FIG. 2 is a substantially vertical annular surface. The contact surface 44a of the interposition member 44 functions as a clamping surface for clamping the vehicle body side bracket 18.
The cam 40 is coupled to the support shaft 38 so as to be able to rotate together. When the support shaft 38 is rotated about its central axis by the operation of the operation lever 22, the cam 40 is rotated accordingly. The cam 40 is disposed between the other side plate 30 (the left side plate 30 in FIG. 2) of the vehicle body side bracket 18 and the head portion 38 a of the support shaft 38.

The cam follower 41 is fitted to the outer periphery of the shaft portion 38b of the support shaft 38 so as to be relatively rotatable. The cam follower 41 is restricted from rotating by engaging with a long hole 26 formed in one side plate 23 (the left side plate 23 in FIG. 2) of the column side bracket 17.
The cam follower 41 is in contact with the outer side surface 30a of the other side plate 30 of the vehicle body side bracket 18, and the contact surface 41a of the cam follower 41 in contact with the outer side surface 30a is a substantially vertical annular surface in FIG. Yes. The contact surface 41 a of the cam follower 41 functions as a clamping surface for clamping the vehicle body side bracket 18. That is, in the present embodiment, the contact surface 44a of the interposition member 44 and the contact surface 41a of the cam follower 41 function as a pair of sandwiching surfaces that sandwich the vehicle body side bracket 18.

  Also, as shown in FIG. 6, annular grooves 45 and 46 are formed on the inner circumferences of the end portions 42 and 43 of the cam 40 and the cam follower 41 that face each other. The pair of annular grooves 45, 46 communicate with each other, and an annular elastic member 47 is interposed between the pair of annular grooves 45, 46 and the outer periphery of the shaft portion 38 b of the support shaft 38. As the elastic member 47, for example, an O-ring, a rubber tube, a synthetic resin member, or the like can be used.

  The elastic member 47 urges the cam 40 and the cam follower 41 in the axial direction and the radial direction of the support shaft 38 in a state where the cam 40 and the cam follower 41 are not engaged or in a state where the engagement is loosened. Does not vibrate. Thereby, generation | occurrence | production of the noise resulting from the vibration of the cam 40 and the cam follower 41 is prevented. Further, by disposing the elastic member 47 between the pair of annular grooves 45 and 46 and the outer periphery of the shaft portion 38b of the support shaft 38, the engagement between the cam 40 and the cam follower 41 is not hindered.

  Referring to FIG. 2, the inner tube 12 includes a metal tube 50 made of, for example, a metal, and a resin tube 51 made of, for example, a synthetic resin fitted to the outer periphery of the metal tube 50. A plurality of convex portions 52 are formed in the resin tube 51 at intervals in the circumferential direction. Although not shown, the plurality of convex portions 52 are formed at a plurality of locations spaced in the axial direction of the resin tube 51. The convex portion 52 may be formed on the metal tube 50.

Further, the pressing member 21 includes a cylindrical portion 48 and a cam-like protruding portion 20 that is formed to project from the intermediate portion in the axial direction of the cylindrical portion 48. The pressing member 21 is, for example, serration-fitted or spline-fitted to the shaft portion 38b of the support shaft 38, whereby the pressing member 21 is connected to the support shaft 38 so as to be able to rotate together.
The cam-like protrusion 20 protrudes from a part of the cylindrical portion 48 in the circumferential direction, and the upper end of the cam-like protrusion 20 enters the outer tube 11 through the opening 49 formed in the outer tube 11. ing. The upper end surface of the cam-shaped protrusion 20 is an arc-shaped surface in which the distance from the center of the tubular portion 48 continuously changes in the circumferential direction of the tubular portion 48 (see FIG. 1).

  Specifically, a concave portion 53 having a rectangular cross section is formed at the upper end portion of the cam-like projection portion 20, and the left and right sides of the concave portion 53 serve as pressing portions 54. The upper end surface of each pressing portion 54 is an arc-shaped surface corresponding to the shape of the outer peripheral surface of the metal tube 50 with respect to the axial direction of the tubular portion 48, and the metal is changed according to the operation of the operation lever 22. It contacts or leaves the outer peripheral surface of the tube 50.

  When the operation lever 22 is rotated in a predetermined direction, the support shaft 38 and the cam 40 are rotated accordingly, and the cam 40 pushes the cam follower 41 toward the right in FIG. 2, and the cam follower 41 moves to the right. . As a result, the pair of side plates 30 of the vehicle body side bracket 18 are clamped in the left-right direction by the lock mechanism 19. As a result, the vehicle body side bracket 18 is elastically bent so that the distance between the pair of side plates 30 is narrowed. When the amount of bending of the vehicle body side bracket 18 exceeds a predetermined value, the side plates 30 of the vehicle body side bracket 18 are pressed against the corresponding side plates 23 of the column side bracket 17. That is, the pair of side plates 23 of the column side bracket 17 is sandwiched between the pair of side plates 30 of the vehicle body side bracket 18, the column side bracket 17 is held by the vehicle body side bracket 18, and the column side bracket 17 is locked.

  Further, at this time, when the operation lever 22 is rotated in a predetermined direction, the support shaft 38 and the pressing member 21 are rotated accordingly, and a pair of the levers 22 are spaced apart in the circumferential direction Y1 of the inner tube 12. The pressing portions 54 come into contact with the outer peripheral surface of the metal tube 50. When each of the pair of pressing portions 54 comes into contact with the outer peripheral surface of the metal tube 50, each pressing portion 54 presses the inner tube 12, and as a result, the inner tube 12 comes into contact with the outer tube 11. It is like that.

  In the present embodiment, the pressing surface can be increased by pressing the inner tube 12 at a plurality of positions spaced apart in the circumferential direction Y1 of the inner tube 12 by the pair of pressing portions 54 of the pressing member 21. In the state where the tube 12 and the pressing member 21 are in contact with each other, the backlash between the inner tube 12 and the outer tube 11 can be removed, and the support rigidity for the entire steering column 8 can be improved to increase the resonance frequency. Therefore, when the inner tube 12 and the pressing member 21 are in contact with each other, it is possible to prevent the steering column 8 from resonating, for example, during idling.

  Further, by rotating the operation lever 22 in a predetermined direction, the position of the steering column 8 is fixed with respect to the vehicle body 13, and the tilt adjustment and telescopic adjustment are restricted. At this time, the operation force applied to the operation lever 22 functions as a force by which the vehicle body side bracket 18 clamps the column side bracket 17, that is, a holding force of the column side bracket 17 by the vehicle body side bracket 18.

On the other hand, when the position of the steering column 8 is fixed to the vehicle body 13 and the operation lever 22 is rotated in the direction opposite to the predetermined direction to return the position of the operation lever 22 to the original position, The position of the steering column 8 is unlocked, and the tilt adjustment and telescopic adjustment can be performed.
In a state where the column side bracket 17 is sandwiched between the vehicle body side brackets 18, a part of each side plate 30 of the vehicle body side bracket 18 follows the shape of the corresponding side plate 23 of the column side bracket 17. The outer side surface 28a of the main body portion 28 of each side plate 23 and the inner side surface 30b of the side plate 30 of the vehicle body side bracket 18 opposed thereto are in contact with each other.

  That is, as shown in FIG. 5, in a state where the vehicle body side bracket 18 is not tightened by the lock mechanism 19, the pair of side plates 30 of the vehicle body side bracket 18 has an interval between the inner side surfaces 30b and 30b extending in the vertical direction. A fourth distance W3 that is constant or a distance between the inner side surfaces 30b and 30b of the lower end portion 302 of the side plate 30 is a fourth interval W3 that is a distance between the inner side surfaces 30b and 30b of the upper end portion 301 of the side plate 30. The interval W4 is slightly wider (W3 ≧ W4).

  On the other hand, when the vehicle body side bracket 18 is tightened by the lock mechanism 19, the pair of side plates 30 are elastically bent so that the distance between each other becomes narrow, but the pair of side plates 23 of the column side bracket 17 are arranged inside thereof. Therefore, when the amount of deflection exceeds a predetermined value, each of the side plates 23 contacts the pair of side plates 23 of the column side bracket 17, and the shape of the inner side surface 30b follows the shape of the corresponding outer side surface of the side plate 23. Thereby, the inner side surface 30b of each side plate 30 of the vehicle body side bracket 18 and the outer side surface 28a of the main body portion 28 of each side plate 23 of the column side bracket 17 facing each other are in contact with each other (in FIG. Hatched). That is, in this embodiment, a sufficient contact area between the column side bracket 17 and the vehicle body side bracket 18 is ensured.

  As described above, in this embodiment, since a sufficient contact area between the column side bracket 17 and the vehicle body side bracket 18 is ensured, the holding force of the column side bracket 17 by the vehicle body side bracket 18 is sufficiently ensured. The rigidity of the contact portion between the side bracket 17 and the vehicle body side bracket 18 is improved. Thereby, for example, it is possible to prevent the steering column 8 from resonating due to the vibration of the vehicle during idling.

  In the present embodiment, the distance between the outer surfaces 28a of the main body 28 is set to become narrower as it goes downward, so that not only the operating force applied to the operating lever 22 but also the column side The force due to the weight of the bracket 17 and the steering column 8 can be applied as the force by which the vehicle body side bracket 18 clamps the column side bracket 17, that is, the holding force of the column side bracket 17 by the vehicle body side bracket 18.

  Specifically, the pair of side plates 30 of the vehicle body side bracket 18 is changed from the pair of side plates 23 of the column side bracket 17 to the pair of side plates 30 of the vehicle body side bracket 18 by the force due to the weight of the column side bracket 17 and the steering column 8. Thus, the side plate 23 of the column side bracket 17 can be further pressed into contact with the corresponding side plate 30 of the vehicle body side bracket 18 by applying a force that pushes the distance between them.

Therefore, in the position adjustment type steering apparatus 1 according to this embodiment, the holding force of the column side bracket 17 by the vehicle body side bracket 18 can be improved without increasing the operation force applied to the operation lever 22.
Further, in the present embodiment, the difference between the upper side and the lower side of the interval between the outer surfaces 28a, 28a of the main body 28 (the difference between the first interval W1 and the second interval W2) is set to a predetermined value. Therefore, it is possible to prevent an excessive bending stress from being applied to the support shaft 38 and a member such as the interposition member 44 and the cam follower 41 from being loosened.

  That is, the contact surface 44a of the interposition member 44 and the contact surface 41a of the cam follower 41 are each a vertical surface in FIG. 2, and the outer surface 30a of the side plate 30 that contacts this is an inclined surface. If the difference between the upper side and the lower side is too large, an excessive bending stress acts on the interposed member 44 and the cam follower 41 when the locking mechanism 19 tightens the vehicle body side bracket 18, and this stress is transmitted to the support shaft 38. There is a case.

  If the difference between the upper side and the lower side is too large, the contact surface 44a of the interposition member 44 and the contact surface 41a of the cam follower 41 and the outer side surface 30a of the side plate 30 in contact with the contact surface 44a are in point contact or line contact. Since the frictional force acting between the interposition member 44 and the cam follower 41 and the side plate 30 in contact with the interposition member 44 and the cam follower 41 becomes small, members such as the interposition member 44 and the cam follower 41 may turn and become loose. Therefore, the predetermined value is a value that exhibits the effect of the present embodiment due to the difference between the upper side and the lower side, and is set to a value that does not cause the above problem due to the difference being too large. Good.

Thus, as in the present embodiment, by restricting the difference between the upper side and the lower side to a predetermined value, these problems are prevented from occurring, and the column side bracket 17 and the vehicle body side bracket 18 are further prevented. A sufficient contact area can be ensured.
In the present embodiment, the case where the concave portion 53 having a rectangular cross section is formed at the upper end portion of the cam-like protrusion 20 has been described. However, the cross sectional shape of the concave portion 53 is not limited to this, and FIG. It may be a V shape as shown, an arc shape as shown in FIG. 7B, or another shape. Moreover, the press part 54 is not restricted to a pair.

  Moreover, this invention is not limited to the content of the above embodiment, A various change is possible within the range of a claim statement.

It is a mimetic diagram showing a schematic structure of a position adjustment type steering device concerning one embodiment of the present invention. FIG. 2 is a schematic cross-sectional view of the position-adjustable steering device along the line II-II in FIG. 1. FIG. 3 is a schematic external view of a part of the position-adjustable steering device as viewed from the direction of arrow III in FIG. 2. It is a front view of a column side bracket. It is a front view of a vehicle body side bracket. It is the figure which expanded a part of FIG. It is a figure which shows the other shape of a recessed part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Position adjustment type steering device, 4 ... Steering shaft (steering shaft), 11 ... Outer tube, 12 ... Inner tube, 13 ... Vehicle body, 17 ... Column side bracket (inner Bracket), 18 ... car body side bracket (outer bracket), 19 ... lock mechanism, 21 ... pressing member, 22 ... operating lever, 23 ... side plate (side plate of inner bracket), ..Side plate (side plate of outer bracket), 38 ... support shaft, 49 ... opening, 54 ... pressing portion, X1 ... axial direction, Y1 ... circumferential direction (circumferential direction of the inner tube) )

Claims (1)

An inner tube and an outer tube that are fitted so as to be slidable relative to each other in the axial direction for telescopic adjustment, and rotatably support the steering shaft;
An outer bracket having a pair of side plates and fixed to the vehicle body;
An inner bracket having a pair of side plates and fixed to the outer tube;
A spindle that penetrates the side plates of both brackets;
An operation lever that is rotated around the axis of the support shaft;
A lock mechanism that releasably locks the inner bracket by pressing the corresponding side plates of both brackets together with the rotation of the operation lever;
A pressing member provided so as to be able to rotate along with the support shaft,
The pressing member is configured to press the outer periphery of the inner tube through an opening provided in the outer tube when the inner bracket is locked in accordance with the turning operation of the operation lever.
The position-adjustable steering apparatus according to claim 1, wherein the pressing member includes a plurality of pressing portions capable of pressing the inner tube at positions spaced apart in the circumferential direction of the inner tube.

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