JP2013103602A - Steering device - Google Patents

Abstract

A steering device is provided in which a pressing cam of a lock mechanism can be reliably pressed against an inner tube.
In a steering apparatus, a tilt bolt having a shaft portion 35b rotatably supported by a column side bracket and a vehicle body side bracket, and an operation lever that rotates integrally with the tilt bolt 35 are rotated. Thus, a cam ring 52 is provided which is pressed against the inner tube 26 and restricts relative displacement between the inner tube 26 and the outer tube 24. The steering device is provided with a tube contact portion 27 and a cam contact portion 53 each having a planar shape at each portion where the inner tube 26 and the cam ring 52 are in contact with each other, and each contact between the tube contact portion 27 and the cam contact portion 53 is provided. The surfaces are formed in parallel.
[Selection] Figure 3

Description

  The present invention relates to a steering apparatus provided with a telescopic mechanism.

2. Description of the Related Art Conventionally, there is a steering device that includes a telescopic mechanism that adjusts the front-rear position of a steering wheel according to the physique of a driver (see, for example, Patent Document 1).
Such a steering device can be expanded and contracted in the axial direction by inserting the inner tube into the outer tube. The steering device includes a vehicle body side bracket that is fixed to the vehicle body, a column side bracket that is fixed to a steering column that rotatably supports the steering shaft, and a shaft member that connects these brackets. The column side bracket is formed with a telescopic elongated hole extending in a telescopic direction that is substantially the front-rear direction of the vehicle. As a result, the column side bracket can move relative to the vehicle body side bracket within the telescopic slot, and the front and rear positions of the steering wheel can be adjusted within the same range.

  The steering device is provided with a tightening mechanism for fixing the position of the column side bracket with respect to the vehicle body side bracket after adjusting the position of the steering wheel. The tightening mechanism is tightly tightened by tightening the vehicle body side bracket and the column side bracket in the axial direction of the shaft member by the turning operation of the operation lever.

  Further, the tightening mechanism restricts the movement of the inner tube with respect to the outer tube by the cam-shaped pressure-contact cam provided on the outer periphery of the shaft member being pressed against the cylindrical inner tube by rotating the operation lever. A locking mechanism is provided.

JP 2009-154789 A

  By the way, in the lock mechanism of the steering device described in the above-mentioned Patent Document 1, as shown in FIG. 6, the contact surface 150 a of the press cam 150 is an arc surface in the axial cross section so as to coincide with the outer peripheral surface of the inner tube 126. ing. For this reason, the position of the press cam 150 in the axial direction of the shaft member 135 is shifted with respect to the inner tube 126, and the outer peripheral surface of the inner tube 126 and the contact surface 150 a of the press cam 150 do not coincide with each other, that is, the normal line of the inner tube 126. If N does not pass through the center position of the pressure cam 150 in the width direction, there is a possibility that the pressure cam 150 and the inner tube 126 are only partially contacted and cannot be reliably pressed. At the time of assembly, attention must be paid to the position of the pressure contact cam 150 with respect to the inner tube 126, and work efficiency is poor. Therefore, there has been a demand for a steering device in which the pressure-contact cam of the lock mechanism can be securely pressed against the inner tube.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a steering device in which a press-contact cam of a lock mechanism can be reliably pressed against an inner tube.

Hereinafter, means for achieving the above-described object and its operation and effects will be described.
According to the first aspect of the present invention, there is provided an inner tube that rotatably accommodates a lower shaft therein, an upper shaft that is linked to the lower shaft, a housing that rotatably accommodates the upper shaft therein, and an axial length thereof. An outer tube having a through-hole that is attached to the outer periphery of the inner tube so as to be adjustable and opens in the axial direction in a portion overlapping with the inner tube, and a bracket that is attached to the vehicle body so that the outer tube can advance and retreat in the axial direction A shaft member having a shaft portion rotatably supported by the bracket, an operation lever for rotating the shaft member, and a radial dimension in the circumferential direction. And the inner tube and the outer tube are pressed against the inner tube by rotating the operation lever. A pressure contact cam that regulates the relative displacement of the inner contact tube and the pressure contact cam, each of the portions where the inner tube and the pressure contact cam are in contact with each other are provided with a tube contact portion and a cam contact portion having a planar shape, The gist is that the contact surfaces of the tube contact portion and the cam contact portion are formed in parallel.

  According to this configuration, the contact surface of the tube contact portion provided in the inner tube and the contact surface of the cam contact portion provided in the press contact cam have a planar shape and are formed in parallel. For this reason, even if the press cam is displaced from its original position in the axial direction of the shaft member, the distance between the contact surfaces of the cam contact portion of the press cam and the tube contact portion of the inner tube is the same over the entire surface. Therefore, when the operating lever is rotated in the regulation direction and the press cam contacts the inner tube, the cam contact portion of the press cam and the tube contact portion of the inner tube do not come into contact with each other as in the prior art. A reliable contact can be made.

  According to a second aspect of the present invention, in the steering apparatus according to the first aspect, the contact surfaces of the tube contact portion and the cam contact portion are formed in parallel with the axis of the shaft portion of the shaft member. The gist of this is.

  According to this configuration, since the contact surfaces of the tube contact portion and the cam contact portion are formed in parallel with the axis of the shaft portion of the shaft member, the press contact cam is displaced from the original position in the axial direction of the shaft member. Even so, the distance between the contact surfaces of the cam contact portion of the pressure contact cam and the tube contact portion of the inner tube is the same over the entire surface, and the distance between the contact surfaces does not change due to deviation. Therefore, when the operation lever is rotated in the regulation direction and the pressure contact cam presses the inner tube, the cam contact portion of the pressure contact cam and the tube contact portion of the inner tube can be more reliably brought into contact with each other.

  According to a third aspect of the present invention, in the steering device according to the first or second aspect, the width of the cam contact portion is set larger than the width of the tube contact portion in the axial direction of the shaft portion of the shaft member. That is the gist.

  According to the same configuration, the cam contact portion is set to be wider than the tube contact portion in the axial direction of the shaft portion of the shaft member. Therefore, it is assumed that the press cam is displaced from the original position in the axial direction of the shaft member. In addition, the tube contact portion of the inner tube is included in the width of the contact surface of the cam contact portion of the press contact cam in the axial direction of the shaft member. Therefore, when the operation lever is rotated in the regulation direction and the pressure contact cam presses the inner tube, the cam contact portion of the pressure contact cam and the tube contact portion of the inner tube can be more reliably brought into contact with each other.

  According to a fourth aspect of the present invention, in the steering device according to the first or second aspect, the width of the tube contact portion is set larger than the width of the cam contact portion in the axial direction of the shaft portion of the shaft member. That is the gist.

  According to this configuration, the width of the tube contact portion is set larger than the width of the cam contact portion in the axial direction of the shaft portion of the shaft member, so that the press cam is displaced from the original position in the axial direction of the shaft member. In addition, the cam contact portion of the press contact cam in the axial direction of the shaft member is included in the width of the contact surface of the tube contact portion of the inner tube. Therefore, when the operation lever is rotated in the regulation direction and the pressure contact cam presses the inner tube, the cam contact portion of the pressure contact cam and the tube contact portion of the inner tube can be more reliably brought into contact with each other.

  The gist of the fifth aspect of the present invention is the steering apparatus according to any one of the first to fourth aspects, wherein the tube contact portion is formed by denting the inner tube radially inward. It is said.

  According to this configuration, since the tube contact portion is formed by denting the inner tube radially inward, the outer diameter of the inner tube can be reduced at the portion where the pressure contact cam is provided, and thus the inner tube and the outer tube can be reduced. The physique of the mechanism that regulates can be reduced.

  According to the present invention, in the steering apparatus, the press-contact cam of the lock mechanism can be reliably pressed against the inner tube.

The longitudinal cross-sectional view which shows the structure of a steering device. The cross-sectional view which shows the structure of a steering device. The enlarged view of FIG. 2 which shows the structure of a steering device. The cross-sectional view which shows the structure of a steering device. The cross-sectional view which shows the structure of a steering device. The cross-sectional view which shows the structure of the conventional steering device.

Hereinafter, an embodiment in which the present invention is embodied in a steering apparatus having a telescopic mechanism will be described with reference to FIGS.
As shown in FIG. 1, the steering apparatus includes a column shaft 3 that constitutes a part of a steering shaft 2 to which a steering wheel (not shown) is connected, and the upper side of the column shaft 3, that is, the rear side of the vehicle. It is supported by the upper support mechanism 29. The upper support mechanism 29 is provided with a tilt mechanism 8 that adjusts the height position of the steering wheel and a telescopic mechanism 9 that adjusts the front-rear position of the steering wheel.

  The column shaft 3 is rotatably accommodated in the steering column 5. A steering wheel is fixed to a rear end (right side in FIG. 1) of the vehicle in the column shaft 3. On the other hand, an intermediate shaft is connected to the front end (left side in FIG. 1) of the column shaft 3 via a universal joint (not shown), and rotation (steering torque) associated with the steering operation is rack and pinion. The steering angle of the steered wheels is changed by being transmitted to a steering mechanism such as a mechanism. The column shaft 3 is mounted on the vehicle in an inclined state so that the front side end portion is positioned on the lower side in the vertical direction of the vehicle.

  The column shaft 3 includes a hollow upper shaft 21 to which a steering wheel is fixed, and an axial lower shaft 22 that can be moved relative to the upper shaft 21 in the axial direction by spline fitting to the upper shaft 21. It has. On the other hand, the steering column 5 includes an outer tube 24 that accommodates and supports the upper shaft 21, and an inner tube 26 that is fixed to the vehicle body and accommodates the lower shaft 22.

  As shown in FIG. 2, the upper support mechanism 29 includes a vehicle body side bracket 31 fixed to the vehicle body, a column side bracket 33 fixed to the steering column 5 (outer tube 24), and the vehicle body side bracket 31. A tilt bolt 35 as a shaft member for connecting the column side bracket 33 is provided.

  The vehicle body side bracket 31 includes two flat side plates 31a and 31b. The pair of left side plate 31a and right side plate 31b of the vehicle body side bracket 31 are respectively formed with tilt long holes 32 extending in the tilt direction.

  The column side bracket 33 is formed in a substantially U-shape upward in the axial direction of the steering shaft 2. The column side bracket 33 is provided with a pair of left side plate 33a and right side plate 33b. Telescopic long holes 34 extending in the telescopic direction are formed in the pair of left side plate 31a and right side plate 31b of the vehicle body side bracket 31, respectively. The upper ends of the side plates 33a and 33b are bent inward and fixed to the steering column 5 (outer tube 24) by welding or the like.

  The tilt bolt 35 includes a head portion 35a and a shaft portion 35b, and the shaft portion 35b is inserted into the tilt long hole 32 and the telescopic long hole 34 in a state where the column side bracket 33 is disposed inside the vehicle body side bracket 31. The The nut 36 is screwed onto the tip of the tilt bolt 35 (the right side in FIG. 2), thereby connecting the vehicle body side bracket 31 and the column side bracket 33. Thereby, the column side bracket 33 can move relative to the vehicle body side bracket 31 in the tilt direction within the range where the tilt long hole 32 is formed, and the vehicle side is within the range where the telescopic long hole 34 is formed. The bracket 31 can be moved relative to the telescopic direction.

  Further, the steering device is provided with a tightening mechanism 40 for holding the height position and the front-rear position of the steering wheel. An operation lever 41 is provided between the head portion 35a of the tilt bolt 35 and the left side plate 31a of the vehicle body side bracket 31 so as to be rotatable integrally with the tilt bolt 35 about the axis of the tilt bolt 35. . The tightening mechanism 40 is configured so that the side plates 31a and 31b are connected to the side plates 33a and 33b of the column side bracket 33 and the axis of the tilt bolt 35 with respect to the side plates 31a and 31b of the vehicle body side bracket 31 according to the rotation position of the operation lever 41. A cam mechanism 42 is provided that applies force in the axial direction so as to be sandwiched from both sides in the direction. The cam mechanism 42 includes a first cam member 43 that rotates integrally with the tilt bolt 35, and a second cam member 44 that can rotate relative to the first cam member 43, and the first cam according to the relative rotation position thereof. The member 43 and the second cam member 44 are in contact with and away from each other.

  Then, the tightening mechanism 40 rotates the operation lever 41 in the tightening direction, whereby the left side plates 33a and 31a and the right side plates 33b and 31b are frictionally engaged by the cam mechanism 42, and the steering column 5 The locked state is maintained. On the other hand, the tightening mechanism 40 rotates the operation lever 41 in the tightening release direction to release the frictional engagement between the left side plates 33a and 31a and between the right side plates 33b and 31b. Is unlocked.

  The steering device of the present embodiment is provided with a lock mechanism 50 that fixes the relative movement of the column side bracket 33 with respect to the inner tube 26 by rotating the operation lever 41 in the tightening direction of the tightening mechanism 40. ing. The lock mechanism 50 further restricts the displacement of the outer tube 24 with respect to the inner tube 26 when the vehicle body side bracket 31 and the column side bracket 33 are tightened by the tightening mechanism 40.

  A cylindrical pole 51 accommodated between both side plates 33 a and 33 b of the column side bracket 33 is serrated and fitted to the outer periphery of the shaft portion 35 b of the tilt bolt 35. An eccentric convex portion 51a that is eccentric so as to protrude most toward the steering column 5 when the operation lever 41 is rotated to the tightening position is formed at the axial center of the outer peripheral surface of the pole 51. A ring-shaped cam ring 52 is slidably fitted on the outer periphery of the convex portion 51a. The tilt bolt 35, the pole 51, and the cam ring 52 are integrally rotated by the rotation operation of the operation lever 41. The pole 51 and the cam ring 52 constitute a pressure cam.

  A through hole 25 is formed in a portion of the outer tube 24 that overlaps the inner tube 26 and faces the tilt bolt 35. When the operation lever 41 is turned to the tightening position, the cam ring 52 is pressed against the inner tube 26 to fix the relative movement of the column side bracket 33 with respect to the inner tube 26.

  Here, as shown in FIG. 3, the contact surfaces of the inner tube 26 and the cam ring 52 of this example are formed to be flat and parallel to each other. That is, a tube contact portion 27 that extends in the axial direction and is formed in a flat surface instead of a curved surface is provided at a portion of the outer peripheral surface of the inner tube 26 facing the cam ring 52. The tube contact portion 27 is formed to protrude outward in the radial direction. Further, the outer peripheral surface of the cam ring 52 is a cylindrical surface, and a cam contact portion 53 formed in a flat surface is formed at a portion that presses against the inner tube 26 of the cam ring 52 when the operation lever 41 is rotated to the tightening position. Is provided. The tube contact portion 27 and the cam contact portion 53 are formed so that their planes are parallel to each other. Further, the contact surfaces of the tube contact portion 27 and the cam contact portion 53 are formed in parallel with the axis P of the shaft portion 35 b of the tilt bolt 35. Further, the width W2 of the cam contact portion 53 is set larger than the width W1 of the tube contact portion 27 in the axial direction of the shaft portion 35b of the tilt bolt 35. Even if the cam ring 52 is displaced from the original position in the axial direction of the tilt bolt 35, the tube contact portion 27 of the inner tube 26 in the axial direction of the tilt bolt 35 has the width of the contact surface of the cam contact portion 53 of the cam ring 52. included.

  Next, the operation of the lock mechanism 50 of the steering apparatus configured as described above will be described with reference to FIG. In FIG. 3, the position of the cam ring 52 in the press contact state in which the operation lever 41 is rotated in the tightening direction and the cam ring 52 is in pressure contact with the inner tube 26 is indicated by a solid line, and the operation lever 41 is rotated in the tightening release direction. The position of the cam ring 52 in a non-pressure contact state where the cam ring 52 is not pressed against the inner tube 26 is indicated by a two-dot chain line.

  As shown in FIG. 3, when the operation lever 41 is operated to the restriction position, the cam ring 52 rotates together with the tilt bolt 35, and the solid line from the non-pressure contact state indicated by the two-dot chain line with respect to the inner tube 26 is obtained. The pressure contact state shown is changed.

  At this time, the entire surface of the cam contact portion 53 of the cam ring 52 and the tube contact portion 27 of the inner tube 26 are in pressure contact with each other over the axial direction of the tilt bolt 35 and are in reliable contact. For example, even if the tube contact portion 27 and the cam contact portion 53 are relatively displaced in the axial direction of the tilt bolt 35, the distance between the contact surfaces of the cam contact portion 53 and the tube contact portion 27 is the same over the entire surface. In addition, the distance between the contact surfaces does not change due to misalignment. Therefore, when the operation lever 41 is rotated in the regulating direction and the cam ring 52 presses the inner tube 26, the cam contact portion 53 and the tube contact portion 27 are reliably in contact with each other without hitting them as in the prior art. In addition, the relative displacement between the inner tube 26 and the outer tube 24 can be reliably regulated. Further, the allowable range of misalignment during assembly is increased, and the assembly work of the cam ring 52 and the pole 51 to the inner tube 26 is facilitated.

As described above, according to the embodiment described above, the following effects can be obtained.
(1) The contact surface of the tube contact portion 27 provided on the inner tube 26 and the contact surface of the cam contact portion 53 provided on the cam ring 52 have a planar shape and are formed in parallel. For this reason, even if the cam ring 52 is displaced from its original position in the axial direction of the tilt bolt 35, the distance between the contact surfaces of the cam contact portion 53 and the tube contact portion 27 is the same over the entire surface. Therefore, when the operation lever 41 is rotated in the regulation direction and the cam ring 52 presses the inner tube 26, the cam contact portion 53 and the tube contact portion 27 do not come into contact with each other as in the prior art. Can touch.

  (2) Since the contact surfaces of the tube contact portion 27 and the cam contact portion 53 are formed in parallel with the axis P of the shaft portion 35b of the tilt bolt 35, the cam ring 52 is in its original position in the axial direction of the tilt bolt 35. Even if they deviate from each other, the distance between the contact surfaces of the cam contact portion 53 and the tube contact portion 27 is the same over the entire surface, and the distance between the contact surfaces does not change due to the positional deviation. Therefore, when the operation lever 41 is rotated in the regulation direction and the cam ring 52 presses against the inner tube 26, the cam contact portion 53 and the tube contact portion 27 can be more reliably brought into contact with each other.

  (3) The width W2 of the cam contact portion 53 is set larger than the width W1 of the tube contact portion 27 in the axial direction of the shaft portion 35b of the tilt bolt 35. Therefore, even if the cam ring 52 is displaced from its original position in the axial direction of the tilt bolt 35, the tube contact portion 27 is included in the width of the contact surface of the cam contact portion 53 in the axial direction of the tilt bolt 35. Therefore, when the operation lever 41 is rotated in the regulation direction and the cam ring 52 presses against the inner tube 26, the cam contact portion 53 and the tube contact portion 27 can be more reliably brought into contact with each other.

  (4) When the operation lever 41 is rotated in the regulating direction, in addition to the regulation by the pressure contact between the cam contact portion 53 and the tube contact portion 27, the vehicle body side bracket 31 and the column side bracket 33 by the tightening mechanism 40 are Since it is tightened, the relative displacement between the inner tube 26 and the outer tube 24 can be reliably controlled.

In addition, the said embodiment can be implemented with the following forms which changed this suitably.
In the above embodiment, the tube contact portion 27 is formed by projecting the inner tube 26 radially outward. However, as shown in FIG. 4, the tube contact portion is recessed by recessing the inner tube 26 radially inward. 27 may be formed. In this way, the outer diameter of the inner tube 26 can be reduced at the portion where the cam ring 52 is provided, and as a result, the size of the mechanism that regulates the inner tube 26 and the outer tube 24 can be reduced. Further, the width W1 of the tube contact portion 27 in the axial direction of the shaft portion 35b of the tilt bolt 35 may be set larger than the width W2 of the cam contact portion 53. Therefore, even if the cam ring 52 is displaced from its original position in the axial direction of the tilt bolt 35, the tube contact portion 27 is included in the width of the contact surface of the cam contact portion 53 in the axial direction of the tilt bolt 35. Therefore, when the operation lever 41 is rotated in the regulation direction and the cam ring 52 presses the inner tube 26, the cam contact portion 53 of the cam ring 52 and the tube contact portion 27 of the inner tube 26 are more reliably in contact with each other. Can do.

  In the above embodiment, the contact surfaces of the tube contact portion 27 and the cam contact portion 53 are formed in parallel with the axis P of the shaft portion 35b of the tilt bolt 35, but are parallel to the axis P of the shaft portion 35b of the tilt bolt 35. It does not have to be formed. For example, as shown in FIG. 5, the contact surfaces of the tube contact portion 27 and the cam contact portion 53 are formed with an angle rather than parallel to the axis P of the shaft portion 35 b of the tilt bolt 35. In this way, even if the cam ring 52 is displaced from the original position in the axial direction of the tilt bolt 35, the distance between the contact surfaces of the cam contact portion 53 and the tube contact portion 27 is the same over the entire surface. Therefore, when the operation lever 41 is rotated in the regulation direction and the cam ring 52 presses against the inner tube 26, the cam contact portion 53 of the cam ring 52 and the tube contact portion 27 of the inner tube 26 are separated as in the prior art. It is possible to make contact without fail.

  In the above embodiment, the operation lever 41 and the tightening mechanism 40 are provided on the left side, but the operation lever 41 and the tightening mechanism 40 may be provided on the right side. Further, the operation lever 41 and the tightening mechanism 40 may be provided separately.

In the above embodiment, the pole 51 and the cam ring 52 are separate members, but the pole 51 and the cam ring 52 may be integrally formed.
In the above embodiment, the tilt bolt 35 is disposed on the lower side of the outer tube 24. However, the tilt bolt 35 may be disposed on the upper side of the outer tube 24.

In the above embodiment, a configuration in which the tilt mechanism 8 is omitted may be employed.
Next, a technical idea that can be grasped from the above embodiment will be described together with its effects.
(A) In the steering apparatus according to any one of claims 1 to 4, the shaft member is a tightening member that tightens the vehicle body side bracket and the column side bracket when the operation lever is rotated. A steering device characterized in that an attaching mechanism is provided.

  According to this configuration, when the operation lever is rotated in the regulation direction, the body side bracket and the column side bracket are tightened by the tightening mechanism in addition to the regulation by the press contact between the cam contact portion and the tube contact portion. The relative displacement between the inner tube and the outer tube can be reliably regulated.

  2 ... Steering shaft, 3 ... Column shaft, 5 ... Steering column, 8 ... Tilt mechanism, 9 ... Telescopic mechanism, 21 ... Upper shaft, 22 ... Lower shaft, 24 ... Outer tube, 25 ... Through hole, 26 ... Inner tube, 27 ... Tube contact portion, 29 ... Upper support mechanism, 31 ... Car body side bracket, 31a ... Left side plate, 31b ... Right side plate, 32 ... Tilt slot, 33 ... Column side bracket, 33a ... Left side plate, 33b ... Right side plate, 34 ... Telescopic slot, 35 ... Tilt bolt, 35a ... Head, 35b ... Shaft, 36 ... Nut, 40 ... Tightening mechanism, 41 ... Operation lever, 42 ... Cam mechanism, 43 ... First cam member, 44 ... 2nd cam member, 50 ... lock mechanism, 51 ... pole, 51a ... convex part, 52 ... cam ring, 53 ... cam contact part, P ... axis, W1, W2 ... width.

Claims (5)

An inner tube that rotatably accommodates the lower shaft, an upper shaft that is linked to the lower shaft, and an upper shaft that is rotatably accommodated in the inner shaft so that the axial length can be adjusted. An outer tube that is mounted on the outer periphery and has a through-hole that opens along the axial direction in a portion that overlaps the inner tube, a bracket that is attached to the vehicle body so that the outer tube can be moved forward and backward in the axial direction, A shaft member having a supported shaft portion, an operation lever that rotates the shaft member, and an eccentric shape that is provided on the shaft portion of the shaft member and whose radial dimension gradually changes along the circumferential direction. Then, when the operation lever is rotated, the pressure is pressed against the inner tube and the relative displacement between the inner tube and the outer tube is regulated. A steering apparatus comprising a cam, a,
Each part where the inner tube and the pressure contact cam are in contact with each other is provided with a flat tube contact part and a cam contact part, and the contact surfaces of the tube contact part and the cam contact part are formed in parallel. A steering device characterized by that. The steering apparatus according to claim 1, wherein
Each contact surface of the said tube contact part and the said cam contact part is formed in parallel with the axis line of the said shaft part of the said shaft member. The steering device characterized by the above-mentioned. The steering apparatus according to claim 1 or 2,
The steering device according to claim 1, wherein a width of the cam contact portion is set larger than a width of the tube contact portion in an axial direction of the shaft portion of the shaft member. The steering apparatus according to claim 1 or 2,
A steering device, wherein a width of the tube contact portion is set larger than a width of the cam contact portion in an axial direction of the shaft portion of the shaft member. In the steering device according to any one of claims 1 to 4,
The said tube contact part is formed by denting the said inner tube to radial inside. The steering device characterized by the above-mentioned.

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