JP2019182008A - Steering column device - Google Patents

Abstract

To simplify structures of a lock mechanism and an energy absorption mechanism so as to reduce the number of components and reduce a manufacturing cost.SOLUTION: A steering column device 1 includes an outer jacket 3, an inner jacket 4 that is inserted into the outer jacket 3 movably in a tubular axis direction, and a lock mechanism 5 that joins the outer jacket 3 and the inner jacket 4. The lock mechanism 5 includes a cam member 23 that turns together with an operation shaft 20, a lock member 10 that is engaged with the cam member 23 and turned by the cam member 23, a locked part 24 that is put in the inner jacket 4, and a metallic member 25 interposed between the inner jacket 4 and the outer jacket 3. The metallic member 25 has one end detachably supported by the locked part 24. A region between the one end and the other end of the metallic member is wound about the periphery of a support 28 of the lock member 10.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a steering column device capable of telescopic operation.

  A conventional steering column device includes a vehicle body mounting bracket fixed to a vehicle body, a pair of side walls extending downward from the vehicle body mounting bracket, an outer jacket disposed between the pair of side walls, and the outer jacket. And an inner jacket that is slidably supported inwardly.

  The steering column device of Patent Document 1 includes a lock mechanism that fastens a vehicle body mounting bracket, an outer jacket, and an inner jacket, and an energy absorbing mechanism that absorbs impact energy during a secondary collision.

JP, 2006-185756, A

  In the steering column device as described above, the number of parts of the lock mechanism and the energy absorbing mechanism is relatively large, and there is a problem that the structure of these mechanisms becomes complicated and the manufacturing cost increases.

  Accordingly, an object of the present invention is to provide a steering column device capable of reducing the number of parts and reducing the manufacturing cost by simplifying the structure of the lock mechanism and the energy absorbing mechanism. .

  A steering column device according to the present invention is formed in a cylindrical shape, and is provided with an outer jacket disposed along a vehicle longitudinal direction, an inner jacket that is movably inserted into the outer jacket in the tube axis direction, and an outer jacket. A locking mechanism for fastening the inner jacket. The lock mechanism includes a cam member that is mounted on the outer peripheral surface of the operation shaft and rotates integrally with the operation shaft, and a support portion that is rotatably supported by the outer jacket. A lock member that is rotated by the inner member, a locked portion that is disposed in the inner jacket, and a metal member that extends between the inner jacket and the outer jacket. The metal member is supported such that one end portion in the extending direction can be engaged with and disengaged from the locked portion, and a portion between the one end portion and the other end portion in the extending direction is wound around the outer peripheral surface of the supporting portion of the locking member. Yes.

  According to the present invention, it is possible to provide a steering column device that can reduce the number of parts and the manufacturing cost by simplifying the structure of the lock mechanism and the energy absorbing mechanism.

It is a bottom view of the steering column apparatus which concerns on embodiment of this invention. It is sectional drawing along the AA line of FIG. 1 showing the time of locking by a locking mechanism. It is sectional drawing along the AA of FIG. 1 showing the time of lock release by a locking mechanism. It is sectional drawing along the BB line of FIG. It is a disassembled perspective view which shows the structure of a locking mechanism. It is a perspective view which shows a control member. It is a typical side view which shows a movement of a control member, (a) shows the state before a vehicle collision, (b) shows the state immediately after a vehicle collision, (c) shows the state of the latter half of a vehicle collision. .

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the front of the vehicle is indicated by FR, and the rear of the vehicle is indicated by RR.

  As shown in FIGS. 1 to 4, the steering column device 1 according to the present embodiment is of a manual type. The steering column device 1 is movable in the vehicle longitudinal direction, a vehicle body mounting bracket 2 fixed to the vehicle body, an outer jacket 3 supported by the vehicle body mounting bracket 2 so as to be swingable in the vehicle vertical direction (tilt position can be adjusted). An inner jacket 4 supported by the outer jacket 3 (the telescopic position can be adjusted).

  The steering column device 1 defines a lock mechanism 5 for fastening the vehicle body mounting bracket 2, the outer jacket 3, and the inner jacket 4, and an adjustment range of the position of the inner jacket 4 in the vehicle longitudinal direction (telescopic position) with respect to the outer jacket 3. And a telescopic position regulating mechanism 6. The lock mechanism 5 also has a function as an energy absorption mechanism for absorbing impact energy at the time of a secondary collision.

  The inner jacket 4 is inserted into the outer jacket 3 so as to be movable in the cylinder axis direction, and is configured to be capable of telescopic operation. Specifically, at the time of locking, the operation lever 11 is pushed up, and the front and rear positions of the inner jacket 4 with respect to the outer jacket 3 are locked (fastened and fixed) by the lock member 10. When unlocked (unlocked), the operation lever 11 can be pushed down to release the lock, and the front / rear position of the inner jacket 4 relative to the outer jacket 3 can be changed. When the front / rear position of the inner jacket 4 becomes an appropriate position, the front / rear position of the inner jacket 4 with respect to the outer jacket 3 is fixed by pushing up and locking the operation lever 11.

  The vehicle body mounting bracket 2 includes a front side fixing portion 12 and a rear side fixing portion 13 that are fixed to a steering member (not shown) of the vehicle body. The front side fixing portion 12 includes a shaft support portion 14 that pivotally supports the outer jacket 3 so that the outer jacket 3 can swing, and the rear side fixing portion 13 includes a pair of side walls 15 that hang from the left and right side edge portions. Tilt long holes 16 that define a tilt position adjustment range along the vehicle vertical direction (tilt direction) are opened in the side walls 15. The tilt long hole 16 is an arc-shaped long hole centered on the shaft support portion 14.

  The outer jacket 3 is formed in a cylindrical shape, and is disposed between the pair of side walls 15 of the vehicle body mounting bracket 2 along the vehicle front-rear direction. The outer jacket 3 is pivotally supported on the shaft support portion 14 of the front fixing portion 12 of the vehicle body mounting bracket 2 via a bolt. As a result, the rear end side of the outer jacket 3 swings in the vehicle vertical direction.

  As shown in FIGS. 1 and 2, the outer jacket 3 is provided with a slit 18 that penetrates the lower surface of the cylindrical wall 17 and extends from the rear end edge along the cylindrical axis direction. The dimension of the slit 18 in the cylinder axis direction is such that the inner jacket 4 inserted from the rear end of the outer jacket 3 is contracted most forward after absorbing the shock to the outer jacket 3 and moved forward. The outer jacket 3 is set so as to extend to the front end.

  As shown in FIGS. 1 and 2, a pair of clamp portions 19 are extended at both edge portions along the cylindrical axis direction of the slit 18. Both clamp portions 19 are located on the rear end side of the slit 18 and extend along the vehicle vertical direction at each portion facing the side wall 15 of the rear-side fixing portion 13. And both the clamp parts 19 penetrate the operation shaft 20 so as to be rotatable around the shaft. Further, a lock shaft 21 is disposed on both clamp portions 19 in parallel with the operation shaft 20.

  A regulating member 22 described later is held at the front end portions of both edges along the cylinder axis direction of the slit 18.

  The inner jacket 4 is formed in a cylindrical shape, and is inserted in the cylinder of the outer jacket 3 so as to be movable in the cylinder axis direction. A steering shaft 7 is supported in the cylinders of the inner jacket 4 and the outer jacket 3. The steering shaft 7 includes a lower shaft 7L accommodated in the outer jacket 3 and an upper shaft 7U accommodated in the inner jacket 4. By connecting the upper shaft 7U and the lower shaft 7L with a spline, the upper shaft 7U and the lower shaft 7L rotate integrally around the axis, and the upper shaft 7U can move relative to the lower shaft 7L in the axial direction. It is configured.

  As shown in FIGS. 1 to 5, the lock mechanism 5 includes an operation lever 11, an operation shaft 20, a lock shaft 21, a cam member 23, a lock member 10, a locked portion 24, and a metal member 25. And have. The lock mechanism 5 functions to fasten the vehicle body mounting bracket 2, the outer jacket 3, and the inner jacket 4, and also functions as an energy absorbing mechanism for absorbing impact energy at the time of a secondary collision.

  The operation shaft 20 has an axial shape, penetrates the tilt long holes 16 of the side walls 15 of the vehicle body mounting bracket 2 and the clamp portions 19 of the outer jacket 3 along the vehicle width direction, and extends around the shaft around the clamp portion 19. It is rotatably supported.

  The lock shaft 21 has a shaft shape, penetrates one of the clamp portions 19 of the outer jacket 3 along the vehicle width direction, and is supported by a hole formed in the other of the clamp portions 19. The lock shaft 21 is disposed behind the operation shaft 20 in parallel with the operation shaft 20.

  An operation lever 11 and a cam member 23 are disposed on the operation shaft 20.

  As shown in FIGS. 2, 3, and 5, the cam member 23 is formed in a cylindrical shape, and a drive cam portion 26 and an auxiliary cam portion 27 projecting in the radial direction are formed on the outer peripheral surface at the center in the axial direction. Has been. Further, the operation shaft 20 is inserted into the cam member 23 so as to rotate around the axis together with the operation lever 11.

  A lock member 10 is disposed on the lock shaft 21.

  As shown in FIGS. 2, 3, and 5, the lock member 10 is formed in a cylindrical shape and includes a support portion 28 that is rotatably supported by the lock shaft 21. On the outer peripheral surface at the center in the axial direction of the support portion 28, a driven cam portion 29 protruding in the radial direction and a lever portion 30 are formed. The driven cam portion 29 extends from the support portion 28 toward the cam member 23 side (the vehicle front side), and the distal end portion of the driven cam portion 29 is between the drive cam portion 26 and the auxiliary cam portion 27 of the cam member 23. Be placed. The lever portion 30 extends upward from the driven cam portion 29 toward the upper side of the vehicle, and a pair of upper and lower protrusions 31 disposed at intervals in the vehicle vertical direction is formed at the tip of the lever portion 30. Has been. A total of four protrusions 31 are formed at the front end of the lever portion 30 on both sides in the vehicle width direction. Further, ironing portions 32 are formed on the outer peripheral surfaces of both end portions of the support portion 28 in the axial direction, and the metal member 25 is ironed by the ironing portions 32 in the process of absorbing impact energy.

  As shown in FIGS. 2, 3, and 5, the locked portion 24 is directly formed on the outer peripheral surface of the inner jacket 4. Specifically, the locked portion 24 includes a pipe circumferential hole (through hole) 33 formed in the outer circumferential surface of the inner jacket 4 along the pipe circumferential direction, and both ends of the pipe circumferential hole 33 in the extending direction. And a tube axis direction notch (notch portion) 34 formed along the tube axis direction on the outer peripheral surface of the inner jacket 4. A plurality of such combinations of the tube circumferential direction hole 33 and the tube axis direction notch 34 are formed on the outer peripheral surface of the inner jacket 4 at intervals in the tube axis direction.

  As shown in FIGS. 2, 3, and 5, the metal member 25 is composed of a wire (for example, a steel wire), and is formed in a U shape in a side view by bending the wire at a plurality of locations. . Specifically, the metal member 25 is supported such that the locking portion 35 at one end is detachably supported by the locked portion 24 of the inner jacket 4, and a winding portion between the locking portion 35 and the other end portion. 36 is wound around the outer peripheral surface of the cam member 23 and the ironing portion 32 of the support portion 28 of the lock member 10, and the folded portion 37 at the other end is folded back outward in the vehicle width direction so as to be U-shaped in a side view. Is formed. Further, the auxiliary shaft 38 is arranged to be shifted downward with respect to the operation shaft 20 and the lock shaft 21, and the metal member 25 is arranged with respect to the vehicle vertical direction in the auxiliary shaft 38, the operation shaft 20, and the lock shaft 21. It is arranged to pass between.

  A protruding portion 39 that protrudes toward the inner jacket 4 is formed on the locking portion 35 of the metal member 25 disposed in front of the vehicle (see FIG. 5). The protruding portion 39 is formed in an inverted U shape when viewed from the front by bending the wire at a plurality of locations. By forming the protruding portion 39 as described above, after the locking portion 35 of the metal member 25 is inserted into the pipe circumferential hole 33 of the locked portion 24, the locking portion 35 is moved along the tube-axis-direction notch portion 34. Can be moved. On the other hand, the folded portion 37 of the metal member 25 disposed in front of the vehicle is disposed in the metal member insertion portion 40 (see FIG. 6) of the restriction member 22. Thereby, the folding | returning part 37 is wired along the cylinder axis direction, and is hold | maintained at the metal member insertion part 40 of the control member 22. FIG. The metal member 25 functions as an energy absorbing member that absorbs impact energy by bending deformation (plastic deformation) while being squeezed by the squeezing portion 32 when the inner jacket 4 is moved due to the secondary collision. To do.

  Hereinafter, an operation procedure of the lock mechanism 5 will be described.

  In order to fix the inner jacket 4 to a desired position, the following procedure is used. In a state where the outer jacket 3 and the inner jacket 4 shown in FIG. 3 are released, the inner jacket 4 is moved to a desired position in the tilt direction (vehicle up-down direction) and the telescopic direction (vehicle front-back direction). With the inner jacket 4 moved to a desired position, the operation lever 11 is operated to swing in the fastening direction. By operating the operation lever 11 to swing in the fastening direction, the operation shaft 20 rotates in the fastening direction around the axis.

  As a result, the clamp mechanism is operated, the side wall 15 of the vehicle body mounting bracket 2 and the clamp portion 19 are pressed against each other, and the outer jacket 3 is held at an arbitrary tilt position. At this time, the space between the pair of clamp portions 19 is narrowed, so that the outer jacket 3 is reduced in diameter and the inner jacket 4 is held at an arbitrary telescopic position.

  Further, when the operating shaft 20 rotates in the fastening direction, the cam member 23 on the operating shaft 20 rotates. Further, along with the rotation of the cam member 23, the lock member 10 on the lock shaft 21 also rotates and locks. The protruding portion 31 on the vehicle lower side of the member 10 presses the locking portion 35 of the metal member 25 against the locked portion 24. By pressing the locking portion 35 of the metal member 25 against the locked portion 24, the projecting portion 39 of the metal member 25 becomes one of the pipe circumferential direction hole 33 and the tube axial direction notch portion 34 of the locked portion 24. Is inserted.

  In order to adjust the position of the inner jacket 4 from the state shown in FIG. 2, the fastening between the outer jacket 3 and the inner jacket 4 is released. For this purpose, first, the operation lever 11 is operated so as to swing in the fastening release direction. By operating the operation lever 11 so as to swing in the fastening release direction, the operation shaft 20 rotates around the axis in the fastening release direction.

  As a result, the clamping by the clamping mechanism is released, the pressure contact between the side wall 15 of the vehicle body mounting bracket 2 and the clamp portion 19 is eliminated, and the outer jacket 3 can move in the tilt direction (the vehicle vertical direction) with respect to the vehicle body mounting bracket 2. It becomes. Further, the space between the pair of clamp portions 19 is expanded, so that the outer jacket 3 is expanded in diameter and the inner jacket 4 is movable in the telescopic direction (vehicle longitudinal direction).

  Further, as the operating shaft 20 rotates in the fastening release direction, the cam member 23 on the operating shaft 20 rotates. Further, as the cam member 23 rotates, the lock member 10 on the lock shaft 21 also rotates. The protrusion 31 on the vehicle upper side of the lock member 10 causes the locking portion 35 of the metal member 25 to be detached from the locked portion 24. The protrusion 39 of the metal member 25 is released from the tube circumferential direction hole 33 and the tube axis direction notch 34 of the locked portion 24, so that the lock is released.

  Hereinafter, the telescopic position regulating mechanism 6 (regulating member 22) will be described.

  As shown in FIGS. 2 and 3, the regulating member 22 is provided so as to be able to protrude and retract in the thickness direction of the tubular wall 17 through the tubular wall 17 at the lower part of the outer jacket 3, and on the telescopic contraction side of the inner jacket 4. The front end position is regulated and the outer jacket 3 is detachable. Specifically, as shown in FIG. 6, the restricting member 22 includes a lower holding portion 41 extending in the vehicle width direction, and a connection extending upward from the center portion of the lower holding portion 41 in the vehicle width direction. Part 42, upper holding part 43 connected to lower holding part 41 through connecting part 42, upper extending part 44 provided on upper holding part 43, and front end of upper extending part 44 The formed stopper part 45 is integrally formed. The stopper portion 45 is held by the cylindrical wall 17 at the lower part of the outer jacket 3. In addition, planar pressing surfaces 46 are formed on the upper surfaces of the lower holding portion 41 on both sides in the vehicle width direction, and abutting surfaces 47 are formed on the stopper portion 45 on the vehicle rear side. The abutting surface 47 restricts the front end position of the inner jacket 4 on the telescopic contraction side. That is, at the time of telescopic adjustment, the front-rear position where the lower portion of the front end of the inner jacket 4 abuts against the abutment surface 47 is the frontmost position on the telescopic contraction side. A pair of metal member insertion portions 40 through which the metal members 25 (wires) are inserted are formed on both sides of the connecting portion 42 in the lower holding portion 41 in the vehicle width direction. Note that a total of four triangular prism protrusions 48 extending in the vertical direction are provided on both sides in the vehicle width direction on the front surface of the lower holding portion 41 and on both sides in the vehicle width direction on the rear surface.

  Next, the movement of the regulating member 22 at the time of a vehicle collision will be described with reference to FIG.

  As shown in FIG. 7A, when the vehicle travels normally, the stopper portion 45 of the restricting member 22 protrudes to the inner peripheral side (upper side in FIG. 7) from the inner peripheral surface 49 of the cylindrical wall 17 of the outer jacket 3. Has been placed. Since the projection 48 of the triangular prism shown in FIG. 6 bites into the lower part of the outer jacket 3, the regulating member 22 is held by the outer jacket 3 and is not detached by its own weight.

  As shown in FIG. 7B, when an impact load equal to or greater than a set value is applied to the inner jacket 4 toward the front of the vehicle at the time of a vehicle collision, the inner jacket 4 moves together with one end portion (the locking portion 35) of the metal member 25. Move forward. Then, the winding part 36 of the metal member 25 moves backward around the support part 28 (the ironing part 32) of the lock member 10 while rotating counterclockwise in a side view. At the same time, the folded portion 37 of the metal member 25 moves backward while pushing down the metal member insertion portion 40 and the pressing surface 46 of the regulating member 22. As a result, the regulating member 22 is detached from the lower portion of the outer jacket 3 as shown in FIGS. 7B and 7C.

  Below, the effect by this embodiment is demonstrated.

  (1) The steering column device 1 according to the present embodiment is formed in a cylindrical shape, and is inserted into the outer jacket 3 movably in the tube axis direction, and the outer jacket 3 disposed along the vehicle longitudinal direction. An inner jacket 4 and a lock mechanism 5 for fastening the outer jacket 3 and the inner jacket 4 are provided. The lock mechanism 5 includes a cam member 23 that is mounted on the outer peripheral surface of the operation shaft 20 and rotates integrally with the operation shaft 20, and a support portion 28 that is rotatably supported by the outer jacket 3. The locking member 10 that is engaged with the cam member 23 and rotated by the cam member 23, the locked portion 24 disposed in the inner jacket 4, and a metal member extending between the inner jacket 4 and the outer jacket 3 25. The metal member 25 is supported such that one end portion in the extending direction (locking portion 35) is detachably supported by the locked portion 24, and a portion between the one end portion and the other end portion in the extending direction (folded portion 37). Is wound around the outer peripheral surface of the support portion 28 of the lock member 10.

  In the steering column apparatus 1 according to the present embodiment, the lock mechanism 5 serves as an energy absorbing mechanism for absorbing impact energy at the time of a secondary collision in addition to the function of fastening the outer jacket 3 and the inner jacket 4. It also has a function. That is, the structure of the lock mechanism 5 and the energy absorption mechanism is achieved by locking (fastening and fixing) the inner jacket 4 with respect to the outer jacket 3 and absorbing impact energy at the time of the secondary collision by one mechanism. Simplification can be achieved. For this reason, it is possible to reduce the number of parts of the steering column device 1 as a whole and to reduce the manufacturing cost of the steering column device 1.

  Therefore, according to the present embodiment, there is provided the steering column device 1 that can reduce the number of parts and the manufacturing cost by simplifying the structure of the lock mechanism 5 and the energy absorbing mechanism. be able to.

  (2) The lock member 10 has a pair of upper and lower projections 31 formed at intervals in the vehicle vertical direction, and a metal member 25 is passed between the pair of upper and lower projections 31. At the time of locking, the metal member 25 abuts on the protrusion 31 on the vehicle lower side and is pushed upward, and at the time of unlocking, the metal member 25 abuts on the protrusion 31 on the vehicle upper side and is pushed down on the vehicle. .

  The metal member 25 is passed between the pair of upper and lower protrusions 31, and the pair of upper and lower protrusions 31 moves one end portion (locking portion 35) of the metal member 25 in the vehicle vertical direction. Thus, the number of parts of the lock mechanism 5 can be reduced. Moreover, in order to make it easy to assemble the metal member 25 to the lock member 10, the tip ends of the pair of upper and lower protrusions 31 are open. Since the metal member 25 can be passed between the pair of upper and lower protrusions 31 from the front end side, the assembling property of the lock mechanism 5 can be improved.

  (3) The locked portion 24 communicates with the pipe circumferential direction hole 33 formed along the pipe circumferential direction on the outer circumferential surface of the inner jacket 4 and the end portion in the extending direction of the pipe circumferential direction hole 33. 4 has a tube-axis-direction notch 34 formed along the tube-axis direction on the outer peripheral surface of the tube 4.

  By forming the tube circumferential direction hole 33 and the tube axial direction notch 34 directly on the outer peripheral surface of the inner jacket 4, there is no need to arrange a separate member on the outer peripheral surface of the inner jacket 4. The number of points can be reduced. Further, by forming the tube axial direction notch portion 34 in addition to the tube circumferential direction hole 33 on the outer peripheral surface of the inner jacket 4, the metal member 25 can be more securely held by the locked portion 24. Become.

  (4) The metal member 25 has a protruding portion 39 that protrudes toward the inner jacket 4 at one end.

  By forming the protruding portion 39 at one end (the locking portion 35) of the metal member 25, the protruding portion 39 of the metal member 25 can be actively engaged with the locked portion 24 of the inner jacket 4. The metal member 25 can be more securely held on the locked portion 24. Further, since there is a distance in the vehicle front-rear direction between the protrusion 39 of the metal member 25 and the protrusion 31 of the lock member 10, the metal member 25 can be elastically deformed with the protrusion 31 as a fulcrum. When locking, the metal member 25 can be bent. For this reason, it is possible to prevent the lock mechanism 5 from being damaged due to the half lock. Furthermore, when a vehicle collision occurs during half-lock, when the inner jacket 4 moves in the tube axis direction, the projecting portion 39 fits into the tube circumferential hole 33 and the tube axis direction notch portion 34, so that energy absorption is ensured. Can do.

  By the way, the steering column device of the present invention has been described by taking the example of the above-described embodiment. However, the present invention is not limited to this embodiment, and various other embodiments can be adopted without departing from the gist of the present invention.

  In the above-described embodiment, the metal member is made of a wire (for example, a steel wire), but is not limited thereto. For example, the metal member may be composed of a plate (for example, a steel plate material).

DESCRIPTION OF SYMBOLS 1 Steering column apparatus 3 Outer jacket 4 Inner jacket 5 Lock mechanism 10 Lock member 20 Operation shaft 23 Cam member 24 Locked part 25 Metal member 28 Support part 31 Projection part 33 Pipe circumferential direction hole 34 Pipe axis direction notch part 39 Projection part

Claims (4)

An outer jacket formed in a cylindrical shape and disposed along the vehicle longitudinal direction;
An inner jacket which is inserted into the outer jacket so as to be movable in the direction of the tube axis;
A locking mechanism for fastening the outer jacket and the inner jacket,
The locking mechanism is
A cam member mounted on the outer peripheral surface of the operation shaft and rotated integrally with the operation shaft;
A lock member rotatably supported by the outer jacket, and a lock member that is engaged with the cam member and rotated by the cam member;
A locked portion disposed in the inner jacket;
A metal member extending between the inner jacket and the outer jacket,
The metal member is supported so that one end portion in the extending direction can be engaged with and disengaged from the locked portion, and a portion between the one end portion and the other end portion in the extending direction is an outer periphery of the supporting portion of the locking member. A steering column device that is wound around a surface. The lock member has a pair of upper and lower protrusions formed at intervals in the vehicle vertical direction,
The metal member is passed between the pair of upper and lower protrusions,
At the time of locking, the metal member abuts against the protrusion on the vehicle lower side and is pushed upward, and when unlocked, the metal member abuts on the protrusion on the vehicle upper side and is pushed down on the vehicle. The steering column apparatus according to claim 1, wherein The locked part is
A pipe circumferential hole formed along the pipe circumferential direction on the outer peripheral surface of the inner jacket;
The tube circumferential direction hole communicates with an end portion in the extending direction, and has a tube axis direction notch portion formed along the tube axis direction on the outer peripheral surface of the inner jacket. The steering column device according to claim 1 or 2.   The steering column device according to any one of claims 1 to 3, wherein the metal member has a protruding portion protruding toward the inner jacket at the one end portion.

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