JPH06329030A - Steering column device - Google Patents

Abstract

PURPOSE:To provide a steering column device capable of preventing the backlash of a steering wheel and securing the rigidity without executing complicated works such as the shim adjustment. CONSTITUTION:A steering column device 1 is provided with an upper main shaft 11 where a steering wheel W is mounted, a lower main shaft 15 to be connected to the upper main shaft 11, a fixed bracket 21 to be fixed to the lower main shaft 15 side, a movable plate 23 which is mounted on the inner side of the fixed bracket 21 and movable in the direction of the telescopic movement, and an upper bracket 27 to be mounted in a tiltable manner on the inner side of this movable plate 23. A long plate-shaped connecting member 21h is fixed to wall parts 21a, 21b on each side of the fixed bracket 21, and the fixed position can be changed, and this constitution allows the adjustment of the clearance between the wall parts 21a, 21b on each side so that no excessive clearance may be provided at the part where the movable plate 23 is brought into contact with the wall parts 21a, 21b on each side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steering column device mounted on an automobile or the like, and can prevent rattling of a steering wheel and secure rigidity without particularly performing complicated work such as shim adjustment. The present invention relates to a steering column device.

[0002]

2. Description of the Related Art Conventionally, a steering column device mounted on an automobile or the like performs a tilting operation for tilting a steering wheel in a vertical direction and a telescopic operation for moving a steering wheel forward and backward in an axial direction of a steering shaft. It has been known.

For example, a steering column device P1 shown in FIG. 11 (FIG. 11A is a plan view thereof, and FIG. 11B is a side view thereof) is capable of tilting operation, and a steering wheel W is attached. Upper main shaft P3, a lower main shaft P7 connected to the upper main shaft P3 via a universal joint P5, an upper bracket P9 fixed to the upper main shaft P3 side, and a lower main shaft P7 fixed. And a fixed bracket P11. Then, the side wall portions P9a and P9b of the upper bracket P9 are respectively tilt center bolts P1 with respect to the side wall portions P11a and P11b of the fixed bracket P11.
3 and a bearing P15 (see FIG. 11B) are tiltably assembled, and when the upper main shaft P3 side is driven by a drive mechanism (not shown) including a drive motor and the like, FIG. As shown in b), with the tilt center bolt P13 as a fulcrum, the upper bracket P
9 and eventually the upper main shaft P3 is indicated by the arrow A or A.
The tilting operation of the steering wheel W is performed by tilting in the ‘direction.

By the way, as shown in the exploded view of FIG. 11 (c), when the upper bracket P9 and the fixed bracket P11 are assembled, the dimension A between the side wall portions P9a and P9b of the upper bracket P9 and the upper bracket P9 When the fit between the side wall portions P11a and P11b and the dimension B is not good, that is, when the dimension B is larger than A, the upper bracket P9 and the fixed bracket P1.
There is a large extra gap in the assembled portion of No. 1, which causes problems such as backlash in tilt operation and deterioration (rattle) of the rigidity of the steering wheel W.

Therefore, in the conventional steering column device, the accuracy of the above-mentioned dimensions (A and B) is increased to manufacture the upper bracket P9 and the fixed bracket P11, or the assembled portion of the upper bracket P9 and the fixed bracket P11 is assembled. Shims were adjusted by appropriately changing the thickness and number of shims (thin plate materials) to be sandwiched.

[0006]

However, if the dimensional accuracy of the fixed bracket or the like is increased in manufacturing, there is a problem that the cost is significantly increased. Also, when performing shim adjustment, trial and error must be repeated in order to determine the optimum thickness and number of shims, which makes adjustment work extremely complicated and causes a cost increase.

The present invention has been made in order to solve the above-mentioned problems, and eliminates complicated work such as shim adjustment, prevents rattling of the steering wheel and secures rigidity without increasing cost. It is an object of the present invention to provide a steering column device that can be used.

[0008]

The invention according to claim 1 for achieving the above object comprises an upper main shaft which is movably connected to a lower main shaft in a direction of a tilt motion and / or a telescope motion. In a steering column device provided with the lower main shaft side, a lower shaft side member provided with two mounting wall portions provided at a predetermined interval from each other, and fixed to the upper main shaft side with An upper shaft side member that is movably attached to both mounting wall portions of the lower shaft side member in the direction of tilt operation and / or telescope operation, and is fixed to both mounting wall portions of the lower shaft side member. A connecting member that connects the two mounting wall portions, and the fixing position of the connecting member and the two mounting wall portions is And gist steering column apparatus, characterized in that both said mounting wall portion can be changed in a direction approaching or isolation.

According to a second aspect of the present invention, there is provided a steering column device including an upper main shaft movably connected to a lower main shaft in a direction of a tilt operation and / or a telescope operation. Fixed to the upper shaft side member having two mounting wall portions provided at a predetermined distance from each other, and both mounting wall portions of the upper shaft side member fixed to the lower main shaft side. With respect to the lower shaft side member that is movably mounted in the direction of tilt operation and / or telescope operation, and a connecting member that is fixed to both mounting wall parts of the upper shaft side member and connects the both mounting wall parts. With and
A gist of a steering column device is characterized in that fixed positions of the connecting member and the both mounting wall portions can be changed in a direction in which the both mounting wall portions approach or are separated from each other.

[0010]

In the steering column device having the above structure, the fixing positions of the connecting member provided on the lower shaft side member and both mounting wall portions can be changed in a direction in which both mounting wall portions approach or are separated from each other. Therefore, the distance between both mounting wall portions can be adjusted to a desired value according to the molding size of the upper shaft side member. Therefore, it is possible to easily eliminate the extra gap between the upper shaft side member and the mounting portion of both the mounting wall portions to obtain a good mounting state, improve the dimensional accuracy of the lower shaft side member and the upper shaft side member, and reduce the complexity. It is possible to suppress the rattling of the tilt operation and the telescopic operation and to secure the rigidity of the steering wheel without performing the shim adjustment.

Further, in the steering column device according to the second aspect, the fixing positions of the connecting member provided on the upper shaft side member and both mounting wall portions can be changed in the direction in which both mounting wall portions approach or are separated. The distance between both mounting wall portions can be adjusted to a desired value according to the molding size of the lower shaft side member. Therefore, similarly to the steering column device according to the first aspect, it is possible to easily eliminate an extra gap generated in the mounting portions of both the mounting wall portions of the lower shaft side member and the upper shaft side member, and to prevent tilting or telescoping. It can prevent rattling and ensure the rigidity of the steering wheel.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. First, a first embodiment of the present invention will be described. here,
FIG. 1 is a plan view of a steering column device 1 of the first embodiment, and FIG. 2 is a side view of the same.

As shown in FIG. 1, the steering column device 1 of this embodiment includes an upper main shaft 11 to which a steering wheel W is attached, and a lower main shaft 15 connected to the upper main shaft 11 via a universal joint 13. And an operating mechanism 16 connected to the shafts 11 and 15 for performing a tilt operation and a telescope operation (hereinafter, abbreviated as telescopic operation).

Then, the lower main shaft 15
Is composed of a first lower shaft 15a on the side of the universal joint 13 and a second lower shaft 15b which is rotatably locked to the lower tube 17 by a bearing or the like, and both lower shafts 15a and 15b are arranged in the rotational direction. Is fitted (serration fit) so that it can slide in the axial direction without slipping.

Therefore, during tilting, the upper main shaft 11 tilts and the steering wheel W tilts in the direction of arrow A or A'with the universal joint 13 as a fulcrum, as shown in FIG. On the other hand, during the telescopic operation, the upper main shaft 11 and the first lower shaft 15a move in the axial direction of the lower shaft 15, and the steering wheel W moves in the direction of arrow B or B '.

Further, as shown in FIG. 1, the operating mechanism 16 for performing such tilting and telescoping operations has a fixing bracket 2 fixed to the lower main shaft 15 side.
1, a movable plate 23 mounted inside the fixed bracket 21 and movable in the direction of the telescopic movement (that is, the axial direction of the lower shaft 15), and the movable plate 23.
A driving unit 29 including an upper bracket 27 that is tiltably mounted on the inner side of the tilt center bolt 25 as a fulcrum, and a drive motor M1 that is mounted below the fixed bracket 21 and that drives the upper bracket 27 in the telescoping direction. Is equipped with.

The respective components of the operating mechanism 16 will be sequentially described in detail below. First, as for the fixed bracket 21, FIG. 1 and FIG. 3 (FIG. 3A is a side view of the fixed bracket 21,
As shown in (b) is the same plan view, it is integrated with the lower tube 17 (fixed to the vehicle body side by the vehicle body fixing portion 17a), and both side wall portions 21a to which the moving plate 23 is assembled. , 21b and a bottom wall portion 21c to which the drive unit 29 is attached, and both side wall portions 21a, 21b
A vehicle body fixing portion 21d fixed to the vehicle body side is provided on the upper portion of b so as to project outward. And both side wall portions 21
The a and 21b are provided with a round hole 21f into which a telescopic lock bolt 25, which will be described later, is inserted, and an elongated hole 21g into which the tilt center bolt 25 is inserted.

Then, both side wall portions 2 of the fixing bracket 21.
A long plate-shaped connecting member (reinforcement bracket) 21h, which is an essential part of the present embodiment, is fixed to 1a and 21b. Both ends of the connecting member 21h are fixed to both vehicle body fixing portions 21d by bolts 21g in the following manner. That is, as shown in the AA sectional view of FIG.
The shaft portion 21i of the bolt 21g is the round hole 2 of the vehicle body fixing portion 21d.
1 j, and the tip portion of the shaft portion 21 i is screwed with the connecting member 21 h. And this vehicle body fixing portion 21d
The hole diameter of the round hole 21j is larger than the shaft diameter of the shaft portion 21i of the bolt 21g, and the vehicle body fixing portion 21d of the side wall portion 21a can be fixed by appropriately shifting in the arrow D or D'direction. That is, as shown in FIG. 3, it is possible to change the fixing position of the connecting member 21h and the side wall portion 21a in a direction in which the side wall portions 21a and 21b approach or separate (that is, the arrow D or D'direction). , Moving plate 23 and both side walls 21
The distance E between the side wall portions 21a and 21b can be adjusted so that an unnecessary gap does not occur at the portion where the a and 21b come into contact with each other.

Next, the moving plate 23 is used as shown in FIGS.
As shown in (side view showing the moving plate 23), there are a pair of left and right plate-like members each having a substantially V-shape, and an elongated hole 23 a attached to the fixed bracket 21 and an upper bracket 27.
Are provided with round holes 23b and 23c. Then, the moving plate 23 is provided on both side wall portions 2 of the fixed bracket 21 so as to be movable in the direction of the telescopic operation.
It is assembled on the inner surface side of 1a, 21b.

Then, as shown in FIG. 1, there is a telescopic lock nut 33 on the side wall portion 21b of the fixed bracket 21.
To tighten the moving plate 23 to the fixed bracket 21
There is provided a telescopic lock motor M2 for fixing to the. The telescopic lock motor M2 is provided with a worm wheel 34 via a reduction mechanism such as a worm (not shown).
Is rotated to tighten or loosen the telescopic lock nut 33 integrated with the worm wheel 34. Therefore, when the telescopic lock nut 33 is not tightened, the moving plate 23 has the elongated hole 23a.
Can be moved in the direction (direction of arrow B or B '),
When the telescopic nut 33 is tightened, the moving plate 23 is sandwiched between the side walls 21a and 21b of the fixed bracket 21 and the collar 32, and its movement is fixed.

Next, as shown in FIGS. 1 and 6 (FIG. 6A is a side view of the upper bracket 27, and FIG. 6B is a plan view of the same), the upper bracket 27 has an upper tube 18 (upper part). The main shaft 11 is inserted therethrough and is fixed rotatably by a bearing or the like), and has side wall portions 27a and 27b assembled with the moving plate 23. As shown in FIG. 6, bearings 35 are provided on the side wall portions 27a and 27b.
Is press-fitted and is tiltably attached to the moving plate 23 as follows. That is, FIG. 1 and FIG.
As shown in (enlarged view of the mounting portion of the bearing 35), the collar 37 is externally fitted to the elongated hole 21g of the fixed bracket 21, the round hole 23b of the moving plate 23 and the bearing hole 35a of the upper bracket 27. The tilt center bolt 25 is inserted and screwed with the nut 39 inside the upper bracket 27. Therefore, the moving plate 23 and the bearing 35 of the upper bracket 27 are
It is sandwiched between the collar 37 and the nut 39.

Further, as shown in FIG. 6, the upper tube 1 of the side wall portions 27a and 27b of the upper bracket 27.
Elongated holes 27c and 27d extending along an arc centered on the bearing hole 35a are provided in the lower portion near the 8th, and as shown in FIG. 1, with respect to the round hole 23c of the moving plate 23, It is assembled by the tilt lock bolt 41 and the tilt lock nut 43.

A tilt lock motor M3 similar to the above-mentioned telescopic lock motor M2 is provided on the outer surface side of the lower portion of the moving plate 23. The tilt lock motor M3 rotates the worm wheel 44 to tighten or loosen the tilt lock nut 43. In the state where the tilt lock nut 43 is not tightened, the upper bracket 27 has the elongated holes 27c ,.
The tilt center bolt 25 can be tilted while being restricted in the direction of 27d, but when the tilt lock nut 43 is tightened, the upper bracket 27 is fixed to the moving plate 23 and cannot be tilted.

Further, as shown in FIG. 6, an elongated plate 51 is attached by welding below the bearings 35 of both side wall portions 27a and 27b of the upper bracket 27. A pin 53 having a convex cross-section is press-fitted in the lower center of the plate 51, and the pin 53 is fitted into a drive nut 61 of the drive unit 29 described in detail below.

The drive unit 29 is shown in FIGS. 2 and 8 (FIG. 8A).
Is a side view of the drive unit 29, and (b) is a plan view of the drive unit 29. As shown in FIG. 4B, the drive unit bracket 57 is screwed to the bottom wall portion 21c of the fixed bracket 21 with the rubber sheet 55 sandwiched therebetween. The drive motor M1 is attached to the drive bracket 57.
Is attached. Further, in the central portion of the drive portion bracket 57, a screw shaft 59 that is rotated by the drive of the drive motor M1 and the screw shaft 5
9 and a drive nut 61 screwed together. Then, as shown in FIG. 8A, the plate 51 of the upper bracket 27 described above is provided on the upper portion of the drive nut 61.
The pin 53 of the drive nut 61 and the plate 51
And are integrated. Therefore, when the drive motor M1 is driven to rotate the screw shaft 59, the drive nut 61 moves in the direction of arrow C or C ′, and the plate 51
Moves to drive the upper bracket 27.

Then, the operation mechanism 16 having the above-mentioned structure is assembled as follows. That is, first, the connecting member 2
The moving plate 23 is assembled to the fixed bracket 21 without fixing 1h to both side wall portions 21a and 21b of the fixed bracket 21. Next, the dimension E (see FIG. 3B) between the side wall portions 21a and 21b of the fixed bracket 21 is larger than the dimension F (see FIG. 1) between the two moving plates 23, and the side wall portions are large. If there is an extra gap between the moving plates 23 and 21a and 21b, both side wall portions 21
By pressing a and 21b toward the moving plate 23, that is, by tightening them inward, this extra gap is eliminated. Then, after confirming that the movable plate 23 operates favorably in a telescopic manner without rattling in this state, the connecting member 21h is fixed to the both side wall portions 21 of the fixed bracket 21 by the bolt 21g.
a, 21b (that is, both vehicle body fixing portions 21d).

The steering column device 1 assembled as described above operates as follows. First,
When performing telescopic operation, telescopic lock motor M2
Is driven to release the tightening of the telescopic lock nut 33. On the other hand, the tilt lock nut 43 is kept in a tightened state, and the upper bracket 27 is moved to the moving plate 2
It is fixed to 3. Then, the drive motor M1 is driven to move the drive nut 61 in the telescopic operation direction. Then, the plate 51 of the upper bracket 27 is driven by the drive nut 61, and the moving plate 23 and the upper bracket 27 are integrated into the plate 23.
It moves in the direction regulated by the elongated hole 23a (direction of arrow B or B'in the figure). Therefore, the upper main shaft 11
And the first lower shaft 15a also moves accordingly,
Telescoping operation is performed.

When performing the tilt operation, the tilt lock motor M3 is driven to release the tightening of the tilt lock nut 43. On the other hand, telescopic lock motor M2
Is driven to tighten the telescopic lock nut 33 to fix the moving plate 23 to the fixed bracket 21. Then, similarly to the above-described telescopic operation, when the drive motor M1 is driven, the upper bracket 27 is restricted by the long hole 27d through which the tilt lock bolt 41 is inserted,
The tilt center bolt 37 is tilted as a fulcrum. Therefore,
The upper main shaft 11 has an arrow A as shown in FIG.
Alternatively, the tilting operation is performed by tilting in the A ′ direction.

As described above, in the steering column device 1 of the first embodiment, both side wall portions 21a of the fixed bracket 21 are
21b is provided with a connecting member 21h.
Since the fixing position of h and the side wall portions 21a, 21b can be changed in the direction in which the side wall portions 21a, 21b approach, the side wall portions 21a, 21 toward the moving plate 23.
b can be tightened. Therefore, it is possible to eliminate an extra gap between the fixed bracket 21 and the movable plate 23 without increasing the dimensional accuracy of the parts or performing a complicated shim adjustment work, etc., without increasing the cost. This has the effect of suppressing rattling of the telescopic operation and ensuring the rigidity of the steering wheel W.

Next, a second embodiment of the present invention will be described. Here, FIG. 9 is a steering column device 81 of the second embodiment.
FIG. The steering column device 81 is the first
This corresponds to the steering column device 1 of the embodiment in which the steering wheel W is attached to the lower main shaft 15 side and the upper bracket 27 and the upper tube 18 are fixed to the vehicle body side.

That is, as shown in FIG. 9, in the steering column device 81, the upper main shaft 83 to which the steering wheel W is attached is the first upper shaft 83a and the second upper shaft 83b (both upper shafts 83a and 83b are serrated). The second upper shaft 83b is connected to the lower main shaft 85 via a universal joint (not shown) as in the first embodiment.

This steering column device 81 includes a fixed bracket 89 (first block) fixed to a lower tube 87.
(It has the same structure as the upper bracket 27 of the embodiment.)
A tilting plate 91 (having the same structure as the moving plate 23) and a moving bracket 93 (the fixed bracket 2).
7), and the moving bracket 93 is provided with a connecting member 9 for connecting both side wall portions in the same manner as in the first embodiment.
3h is provided. Then, the fixed bracket 89, the tilting plate 89 and the moving bracket 93 are
It is assembled in the same manner as in the first embodiment. Therefore,
The tilting plate 91 is tiltable with respect to the fixed bracket 89 with the tilt center bolt 95 as a fulcrum, and the moving bracket 93 is in the axial direction of the upper main shaft 83 with respect to the tilting plate 91 (that is, the telescopic movement direction).
Can be moved to. Further, a drive unit 97 having a drive motor M4 and the like is provided under the moving bracket 93 as in the first embodiment, and a telescopic lock motor M5 for fixing the moving bracket 93 to the tilting plate 91 during the tilting operation. , And a tilt lock motor M6 for fixing the tilting plate 23 to the fixed bracket 89 during the telescopic operation.

Also in the steering column device of the second embodiment, the moving bracket 93 and the tilting plate 9 are provided by the connecting member 93h provided on the moving bracket 93.
The extra gap 1 can be eliminated, and the same effect as the first embodiment can be obtained. Next, a third embodiment of the present invention will be described. Here, FIG. 10 is a plan view of the steering column device 111 of the third embodiment.

Steering column device 11 of the third embodiment
In the first embodiment, the steering column device 1 of the first embodiment is simplified so that only the tilting operation is performed.
That is, an upper bracket 119 fixed to the upper main shaft 113 side to which the steering wheel W is attached and a fixed bracket 121 fixed to the lower main shaft 117 side are provided, and the fixed bracket 121 has the same structure as that of the first embodiment. Similarly, both side wall portions 121a,
A connecting member 121h that connects 121b is provided. Then, the side wall portion 119 of the upper bracket 119
a and 119b are the side wall portions 121 of the fixing bracket 121, respectively, in the same manner as in the case of the first embodiment (see FIG. 7).
The tilt center bolt 123 and a bearing (not shown) are attached to the a and 121b so as to be tiltable.
Therefore, a drive mechanism including a drive motor (not shown)
When the upper main shaft 113 side is driven by, the movable bracket 119 and thus the upper main shaft 113 tilts around the tilt center bolt 123 as a fulcrum, and the tilting operation of the steering wheel W is performed.

Also in the steering column device of the third embodiment, similar to the first and second embodiments, the dimensional accuracy of both brackets 119 and 121 is not increased, and complicated shim adjustment work is not performed. It has an advantage that rattling of the tilting operation can be suppressed and the rigidity of the steering wheel W can be secured.

The embodiment of the present invention has been described above.
The present invention is not limited to the above-mentioned embodiments, and it goes without saying that it can be implemented in various modes. For example, the fixing positions of the connecting member and the both side wall portions may be changed in the direction in which the both side wall portions are expanded. That is, for example, in the third embodiment, both side wall portions 1 of the upper bracket 119 are formed.
A connecting member 121h may be provided on 19a and 119b, and both side wall portions 119a and 119b may be expanded to the outside so as to eliminate the gap between the assembled parts.

[0037]

As described above, in the steering column device according to the first aspect of the present invention, the fixing positions of the connecting member provided on the lower shaft side member and both mounting wall portions are close to or separated from each other. You can change the direction to
It is possible to eliminate an extra gap between the upper shaft side member and the lower shaft side member assembling portion without increasing the dimensional accuracy of the parts or performing complicated work such as shim adjustment. Therefore, it is possible to suppress the rattling of the tilt operation and the telescopic operation and to secure the rigidity of the steering wheel without increasing the cost.

Also, in the steering column device according to the second aspect, the fixing positions of the connecting member provided on the upper shaft side member and both mounting wall portions can be changed in the direction in which both mounting wall portions approach or are separated. Similar to the steering column device according to the first aspect, it is possible to suppress the rattling of the tilt operation and the telescopic operation and secure the rigidity of the steering wheel without performing a complicated work such as shim adjustment.

[Brief description of drawings]

FIG. 1 is a plan view of a steering column device according to a first embodiment.

FIG. 2 is a side view of the steering column device according to the first embodiment.

3A and 3B show a fixing bracket provided with a connecting member of the first embodiment, FIG. 3A is a side view thereof, and FIG. 3B is a plan view thereof.

FIG. 4 is a sectional view showing a fixed state of the connecting member of the first embodiment.

FIG. 5 is a side view of the moving plate according to the first embodiment.

FIG. 6 shows the upper bracket of the first embodiment,
(A) is the side view, (b) is the top view.

FIG. 7 is an enlarged cross-sectional view showing the mounting structure of the moving plate and the upper bracket of the first embodiment.

8A and 8B show a drive unit of the first embodiment, FIG. 8A is a side view thereof, and FIG. 8B is a plan view thereof.

FIG. 9 is a side view showing a steering column device according to a second embodiment.

FIG. 10 is a plan view showing a steering column device according to a third embodiment.

FIG. 11 is an explanatory diagram showing a conventional technique.

[Explanation of symbols]

1 ... Steering column device 11 ... Upper main shaft 15 ... Lower main shaft 21 ... Fixing bracket 21h ... Connecting member 23 ... Movement plate 27 ... Upper bracket W ... Steering wheel

Claims (2)

[Claims] 1. A steering column device comprising an upper main shaft movably connected to a lower main shaft in a direction of tilt operation and / or telescope operation, the steering column device being fixed to the lower main shaft side and being mutually fixed. A lower shaft side member having two mounting wall portions provided at a predetermined interval, and being fixed to the upper main shaft side,
An upper shaft side member movably attached to both mounting wall portions of the lower shaft side member in a direction of tilt operation and / or telescope operation, and fixed to both mounting wall portions of the lower shaft side member, A steering comprising: a connecting member that connects the two mounting wall portions, and a fixing position of the connecting member and the two mounting wall portions can be changed in a direction in which the two mounting wall portions approach or are separated from each other. Column device. 2. A steering column device comprising an upper main shaft movably connected to a lower main shaft in a direction of tilt operation and / or telescope operation, the steering column device being fixed to the upper main shaft side,
An upper shaft side member having two mounting wall portions provided at a predetermined distance from each other, and a tilting operation with respect to both mounting wall portions of the upper shaft side member, which are fixed to the lower main shaft side. And / or a lower shaft side member that is movably mounted in the direction of telescope operation, and is fixed to both mounting wall portions of the upper shaft side member,
A steering comprising: a connecting member that connects the two mounting wall portions, and a fixing position of the connecting member and the two mounting wall portions can be changed in a direction in which the two mounting wall portions approach or are separated from each other. Column device.