JP2020172202A - Electric steering column and manufacturing method of electric steering column - Google Patents

Abstract

To obtain an electric steering column having a novel constitution in which looseness of a main housing can be restricted, and a manufacturing method of the electric steering column.SOLUTION: An electric steering column of an embodiment comprises: a main housing supported on a vehicle body so that a tilt angle can be changed; and a tilt mechanism for changing the tilt angle of the main housing relative to the vehicle body. The tilt mechanism includes: a shaft extending along a width direction of the main housing; a pair of swing arms that are positioned on both sides in the width direction of the main housing, and that are fixed to the shaft and capable of swinging about the center of rotation of the shaft; and a pair of bearing members that are members different from the main housing, and that are supported to be swingable about the center of rotation of the shaft and to be movable in the axial direction of the shaft, and that are fixed to the main housing in a state of abutting on the swing arms respectively in the axial direction.SELECTED DRAWING: Figure 1

Description

The present invention relates to an electric steering column and a method for manufacturing the electric steering column.

Conventionally, a pair of a main housing that is supported by the vehicle body so that the tilt angle can be changed, a tilt mechanism that changes the tilt angle of the main housing with respect to the vehicle body, and a pair of fixed arms located on both sides of the main housing in the width direction. An electric steering column including a spring member interposed between a fixed arm and a main housing is known (see, for example, Patent Document 1).

JP-A-2015-223974

In this type of electric steering column, it would be beneficial if, for example, a new configuration capable of suppressing rattling of the main housing without using a spring member could be obtained.

Therefore, one of the problems of the present invention is to obtain, for example, a method for manufacturing an electric steering column and an electric steering column having a new configuration capable of suppressing rattling of the main housing.

The electric steering column according to the embodiment of the present invention includes, for example, a main housing supported by a vehicle body so that the tilt angle can be changed, and a tilt mechanism for changing the tilt angle of the main housing with respect to the vehicle body. Is a pair of swings that are located on both sides of the main housing in the width direction and are fixed to the shaft and can swing around the center of rotation of the shaft. The moving arm and the main housing are separate members, and are supported by the shaft so as to be swingable around the center of rotation and movable in the axial direction of the shaft, in each of the swing arms and in the axial direction. It has a pair of bearing members fixed to the main housing in contact with each other.

According to such a configuration, for example, by making the bearing member a member different from the main housing, the main is in a state where the axial (width direction) gap between the bearing member and the swing arm is made smaller. The bearing member can be integrated with the main housing by fixing to the housing. Therefore, for example, the rattling of the main housing can be suppressed, and the labor and cost required for manufacturing the electric steering column can be easily reduced as compared with the conventional structure using the spring member.

Further, in the electric steering column, for example, the bearing member extends from the first wall facing the swing arm and the side opposite to the swing arm from the first wall and is fixed to the main housing by welding. It has a second wall, and a sliding member interposed between the first wall and the swing arm.

According to such a configuration, for example, the welded portion between the bearing member and the main housing can be further separated from the sliding member by the second wall, so that the heat influence on the sliding member can be suppressed.

Further, in the electric steering column, for example, the bearing member has a pair of the second walls provided at intervals in the longitudinal direction of the main housing.

According to such a configuration, for example, since the cross-sectional coefficient of the bearing member is increased by the pair of second walls, the rigidity and strength of the bearing member are likely to be further increased.

Further, the second wall has an end face that faces the side opposite to the swing arm and is inclined so as to approach the swing arm as the distance from the main housing increases.

According to such a configuration, for example, by inserting a tapered jig between the end faces of a pair of bearing members, the bearing members are guided to slide on both sides in the axial direction and approach the swing arm. Will be done. Therefore, for example, the pair of bearing members can be fixed to the main housing more easily, more smoothly, or more accurately in a state of being in axial contact with each of the swing arms.

Further, in the method for manufacturing an electric steering column according to the embodiment of the present invention, for example, a shaft extending along the width direction of the main housing and a shaft located on both sides of the main housing in the width direction and fixed to the shaft. A pair of swing arms that can swing around the center of rotation of the shaft and a member that is separate from the main housing and that can swing around the center of rotation and move in the axial direction of the shaft. A step of assembling a subassembly by integrating the pair of bearing members to be formed, a step of positioning the subassembly in the main housing, and a jig being inserted between the pair of bearing members to assemble the bearing member. It has a step of fixing each of the swing arms to the main housing in a state of being in contact with each other in the axial direction.

According to such a configuration, for example, by making the bearing member a member different from the main housing, the main is in a state where the axial (width direction) gap between the bearing member and the swing arm is made smaller. The bearing member can be integrated with the main housing by fixing to the housing. Therefore, for example, the rattling of the main housing can be suppressed, and the labor and cost required for manufacturing the electric steering column can be easily reduced as compared with the conventional structure using the spring member.

FIG. 1 is an exemplary and schematic perspective view of the electric steering column of the embodiment. FIG. 2 is an exemplary and schematic exploded perspective view of the electric steering column of the embodiment. FIG. 3 is an exemplary and schematic side view of the electric steering column of the embodiment. FIG. 4 is a sectional view taken along line IV-IV of FIG. FIG. 5 is an enlarged view of the bearing member of FIG. FIG. 6 is an exemplary and schematic perspective view illustrating a method of manufacturing the electric steering column of the embodiment. FIG. 7 is an exemplary and schematic perspective view illustrating a method of manufacturing the electric steering column of the embodiment, and is a diagram showing a state after FIG. 6. FIG. 8 is an exemplary and schematic perspective view of a modified electric steering column. FIG. 9 is an exemplary and schematic front view illustrating a method of manufacturing a modified electric steering column. FIG. 10 is an exemplary and schematic front view illustrating a method of manufacturing an electric steering column of a modified example, and is a view showing a state after FIG. 9. FIG. 11 is an exemplary and schematic front view of the electric steering column of another modification.

Hereinafter, exemplary embodiments and modifications of the present invention will be disclosed. The configurations of the embodiments and modifications shown below, and the actions and effects brought about by the configurations, are examples. The present invention can also be realized by configurations other than those disclosed in the following embodiments and modifications. Further, according to the present invention, it is possible to obtain at least one of various effects (including derivative effects) obtained by the configuration.

In addition, the embodiments and modifications disclosed below include similar components. Therefore, in the following, common reference numerals are given to these similar components, and duplicate explanations are omitted. In this specification, the ordinal number is used only for distinguishing parts, members, parts, positions, directions, etc., and does not indicate the order or priority.

Further, in the following description, in each drawing, the arrow X indicates the direction away from the steering wheel (not shown) in the longitudinal direction of the steering shaft 13 (hereinafter, referred to as the direction X), and the arrow Y indicates the electric steering column. Of the vehicle width directions of 10, the right side (hereinafter referred to as the direction Y) in the state of facing the front of the vehicle is shown, and the arrow Z indicates a direction orthogonal to the direction X and the direction Y and toward the upper side of the vehicle. Shown. Direction X, direction Y, and direction Z are orthogonal to each other. Normally, in the vehicle-mounted state of the electric steering column 10, the direction X is tilted with respect to the vehicle front-rear direction, and the direction Z is tilted with respect to the vehicle vertical direction.

In the following, for convenience, unless otherwise specified, the direction X is simply referred to as the front, the opposite direction of the direction X is simply referred to as the rear, the direction Y is simply referred to as the right, and the opposite direction of the direction Y is simply referred to as the left. The direction Z is simply referred to as upward, and the direction opposite to the direction Z is simply referred to as downward. Further, the direction X and the opposite direction are simply referred to as the longitudinal direction, the direction Y and the opposite direction are simply referred to as the width direction or the axial direction of the shaft 22, and the direction Z and the opposite direction are simply referred to as the height direction. ..

FIG. 1 is a perspective view of the electric steering column 10, FIG. 2 is an exploded perspective view of the electric steering column 10, and FIG. 3 is a side view of the electric steering column 10. As shown in FIGS. 1 to 3, the electric steering column 10 is attached to brackets 1 and 2 fixed to vehicle body components such as a cross member, and includes a main housing 11, a movable housing 12, and a steering shaft. 13 and a tilt mechanism 20 are provided.

The main housing 11 is swingably supported by brackets 1 and 2 so that the angle in the longitudinal direction with respect to the vehicle front-rear direction, that is, the tilt angle can be changed. Specifically, the front end of the main housing 11 is rotatably supported by the front bracket 1 around the first rotation center Ax1 (see FIG. 3) extending in the width direction.

Further, the rear end of the main housing 11 is rotatably supported by the rear ends of the swing arms 21L and 21R around the second rotation center Ax2 extending in the width direction, and the swing arms 21L and 21R are supported. The front end is rotatably supported by the rear bracket 2 around the third rotation center Ax3 extending in the width direction. Therefore, the main housing 11 rotates about the first rotation center Ax1 with respect to the bracket 1, and the swing arms 21L and 21R rotate about the third rotation center Ax3 with respect to the bracket 2, and the main housing As the 11 rotates around the second rotation center Ax2 with respect to the swing arms 21L and 21R, the main housing 11 and thus the electric steering column 10 rotate with respect to the brackets 1 and 2.

In such a configuration, when the swing arms 21L and 21R rotate around the second rotation center Ax2 with respect to the main housing 11, the electric steering column 10 rotates with respect to the brackets 1 and 2 and eventually to the vehicle body. .. In this embodiment, the swing arms 21L and 21R form a part of the tilt mechanism 20.

As shown in FIG. 2, the main housing 11 extends in the longitudinal direction, and includes a pair of upper and lower upper walls 11a and lower walls 11b, a pair of left and right left walls 11c and right walls 11d, and a pair of front and rear front walls 11e. And a rear wall 11f. The upper wall 11a and the lower wall 11b have a rectangular and plate-like shape, extend in the longitudinal direction at a constant height, and are substantially parallel to each other.

The left wall 11c and the right wall 11d have a rectangular and plate-like shape, extend in the longitudinal direction with a constant width, and are substantially parallel to each other. The front wall 11e and the rear wall 11f have a quadrangular and plate-like shape, and are provided substantially parallel to each other at intervals in the longitudinal direction. In the main housing 11, a hollow portion 11g (space) extending in the longitudinal direction is provided by the upper wall 11a, the lower wall 11b, the left wall 11c, the right wall 11d, the front wall 11e, and the rear wall 11f. ..

The movable housing 12 extends in the longitudinal direction and is housed in the hollow portion 11g of the main housing 11. The movable housing 12 is configured to be movable in the longitudinal direction with respect to the main housing 11 by a telescopic mechanism (not shown). In the present embodiment, the movable housing 12 and the steering shaft 13 move in the longitudinal direction with respect to the main housing 11, so that the electric steering column 10 expands and contracts.

Further, the movable housing 12 is provided with a hollow portion 12a extending in the longitudinal direction. The steering shaft 13 penetrates the hollow portion 12a of the movable housing 12 in the longitudinal direction. The steering shaft 13 can rotate around the rotation center C0 (see FIG. 3) in response to the operation of the steering wheel (not shown). The center of rotation C0 is an example of the central axis.

As shown in FIG. 2, the tilt mechanism 20 includes, for example, swing arms 21L and 21R, a shaft 22, and bearing members 23L and 23R. The shaft 22 is located above the main housing 11 and extends along the width direction. Bearing members 23L and 23R, which will be described later, are inserted into the shaft 22 from both sides in the axial direction.

Further, both ends 22a of the shaft 22 in the axial direction are coupled to the swing arms 21L and 21R by, for example, welding or caulking. Both end portions 22a are formed in a quadrangular shape along the edges of the openings 21a of the swing arms 21L and 21R. As a result, the relative rotation of the shaft 22 and the swing arms 21L and 21R is restricted.

The swing arms 21L and 21R are located on both sides of the main housing 11 in the width direction. The swing arm 21L has a substantially rectangular shape and a plate shape, and the swing arm 21R has a substantially triangular shape and a plate shape.

The swing arms 21L and 21R are provided with an opening 21a into which the shaft 22 is inserted and an opening 21b into which the coupling tool 29 (see FIG. 3) to be fastened together with the bracket 2 is inserted. The openings 21a and 21b are through holes that penetrate the swing arms 21L and 21R in the axial direction (width direction). The swing arms 21L and 21R are rotatably supported around the third rotation center Ax3 of the coupling tool 29.

Further, at the lower end of the swing arm 21R, an opening 21c to be coupled with the rotation linear motion conversion mechanism 25 (see FIG. 3) is provided. The swing arms 21L and 21R are integrally connected via the shaft 22 and are fixed to the upper wall 11a at the rear end of the main housing 11 to the bearing members 23L and 23R described later, which are the second rotation centers of the shaft 22. It is supported so as to be swingable around Ax2. The second rotation center Ax2 is an example of the rotation center.

In such a configuration, when the rotation linear motion conversion mechanism 25 moves forward (X direction), the swing arms 21L and 21R rotate around the third rotation center Ax3 with respect to the bracket 2 in the counterclockwise direction in FIG. Along with this rotation, the main housing 11 and the bearing members 23L and 23R rotate counterclockwise in FIG. 3 around the first rotation center Ax1 with respect to the bracket 1, and the electric steering column with respect to the horizontal direction in the vehicle-mounted state. The tilt angle of 10, that is, the tilt angle becomes smaller.

On the other hand, when the rotation linear motion conversion mechanism 25 moves rearward, the swing arms 21L and 21R rotate clockwise with respect to the bracket 2 around the third rotation center Ax3 in the clockwise direction in FIG. 3, and the main housing 11 is accompanied by this rotation. The bearing members 23L and 23R rotate clockwise with respect to the bracket 1 around the first rotation center Ax1 in the clockwise direction in FIG. 3, and the tilt angle becomes large. The tilt-up and tilt-down in the tilt mechanism 20 are switched according to the rotation direction of the electric motor (not shown).

FIG. 4 is a sectional view taken along line IV-IV of FIG. 3, and FIG. 5 is an enlarged view of the bearing member 23R of FIG. As shown in FIGS. 4 and 5, the bearing members 23L and 23R have, for example, an end wall 23a, a pair of side walls 23b, and a sliding member 24, respectively. The end wall 23a has a quadrangular and plate-like shape, and faces the swing arms 21L and 21R. The end wall 23a is provided with an opening 23a1 into which the shaft 22 is inserted in the axial direction. The end wall 23a is an example of the first wall.

The pair of side walls 23b have a quadrangular and plate-like shape, and are provided substantially parallel to each other at intervals in the longitudinal direction. The side wall 23b extends from the end wall 23a to the side opposite to the swing arms 21L and 21R, that is, to the central portion side in the axial direction of the shaft 22. Of the pair of side walls 23b, the rear side wall 23b (see FIG. 1) is located at the rear end of the upper wall 11a. The side wall 23b is an example of the second wall.

As shown in FIG. 5, the sliding member 24 has, for example, a base portion 24a and a surface layer 24b. The surface layer 24b is coated on the inner surface of the base portion 24a. The base portion 24a and the surface layer 24b are made of rubber or a synthetic resin material (for example, Teflon (registered trademark) or the like). The sliding member 24 is also referred to as a bush, a bearing member, or the like.

Further, the sliding member 24 has, for example, a tubular portion 24c and a flange portion 24d. The tubular portion 24c is formed in a cylindrical shape along the edge portion of the opening 23a1 and is interposed between the edge portion and the outer peripheral surface of the shaft 22. The tubular portion 24c prevents direct contact between the shaft 22 and the end wall 23a, and slides with the relative rotation of the shaft 22 and the bearing members 23L and 23R.

The flange portion 24d is formed in an annular shape and a plate shape extending from the tubular portion 24c along the radial direction of the shaft 22. The flange portion 24d is interposed between the outer surface 23a2 of the end wall 23a and the swing arms 21L and 21R. The flange portion 24d prevents contact between the swing arms 21L and 21R and the end wall 23a, and slides with the relative rotation of the swing arms 21L and 21R and the bearing members 23L and 23R.

Next, a method of manufacturing the electric steering column 10 will be described. FIG. 6 is a perspective view illustrating a method of manufacturing the electric steering column 10. FIG. 7 is a perspective view illustrating a method of manufacturing the electric steering column 10, and is a view showing a state after FIG.

As shown in FIG. 6, first, the swing arm 21L, 21R, the shaft 22, and the bearing members 23L, 23R are integrated to assemble the subassembly 50 (S1). S1 is an example of the first step.

In S1, a step of inserting bearing members 23L and 23R into the shaft 22 from both sides in the axial direction, a step of fixing both ends 22a of the shaft 22 in the axial direction and the swing arms 21L and 21R by caulking, welding, etc. Is included. When the shaft 22 and the swing arms 21L and 21R are fixed by welding, the sliding members 24 are welded by welding the bearing members 23L and 23R apart from the swing arms 21L and 21R in the axial direction. The thermal effect on the bearing can be suppressed.

Next, as shown in FIG. 7, the subassembly 50 is positioned in the longitudinal direction and the height direction with respect to the main housing 11 (S2). S2 is an example of the second step.

In S2, for example, a step of mounting the bearing members 23L and 23R on the upper wall 11a, a step of pressing the swing arms 21L and 21R with jigs from both sides in the width direction, and a step of pressing the swing arms 21L and 21R with jigs in the openings 21b of the swing arms 21L and 21R. The process of inserting the positioning pin and the like are included.

Then, a jig 60 (see FIG. 9) is inserted between the pair of bearing members 23L and 23R from above, and the bearing members 23L and 23R are brought into axial contact with each of the swing arms 21L and 21R. Is fixed to the main housing 11 (S3). S3 is an example of the third step.

In S3, for example, a step of axially compressing the flange portion 24d (see FIG. 5) between the end wall 23a and the swing arms 21L and 21R by a jig 60, and a pair of side walls of the bearing members 23L and 23R. A step of fixing the 23b to the upper wall 11a by laser welding and the like are included. The method of fixing the bearing members 23L and 23R is not limited to this example, and may be fixed by, for example, a fitting such as a bolt, welding other than laser welding, or the like.

As described above, in the present embodiment, for example, the tilt mechanism 20 is located on both sides of the shaft 22 extending along the width direction (Y direction) of the main housing 11 and the width direction of the main housing 11, and the shaft 22. A pair of swing arms 21L and 21R that are fixed to the shaft 22 and swing around the second rotation center Ax2 (rotation center), and the shaft 22 swings around the second rotation center Ax2. It has a pair of bearing members 23L and 23R that are movably supported in the axial direction (Y direction) of 22 and fixed to the main housing 11 in a state of being in contact with each of the swing arms 21L and 21R in the axial direction. are doing.

According to such a configuration, for example, by making the bearing members 23L, 23R a member different from the main housing 11, the axial direction (width direction) between the bearing members 23L, 23R and the swing arms 21L, 21R ) Can be fixed to the main housing 11 in a state where the gap is smaller, and the bearing members 23L and 23R can be integrated with the main housing 11. Therefore, for example, rattling of the main housing 11 can be suppressed, and by extension, the labor and cost required for manufacturing the electric steering column 10 can be easily reduced as compared with the conventional structure using the spring member. Further, for example, the thermal influence on the sliding member 24 can be suppressed as compared with the case where the swing arms 21L and 21R are moved to the central portion side in the axial direction and fixed by welding with respect to the main housing 11. ..

Further, in the present embodiment, for example, the bearing members 23L, 23R are opposite to, for example, the end wall 23a (first wall) facing the swing arm 21L, 21R and the swing arm 21L, 21R from the end wall 23a. It has a side wall 23b (second wall) extending to the side and fixed to the main housing 11 by welding, and a sliding member 24 interposed between the end wall 23a and the swing arms 21L and 21R. ..

According to such a configuration, for example, the welded portion between the bearing members 23L and 23R and the main housing 11 can be further separated from the sliding member 24 by the side wall 23b, so that the heat effect on the sliding member 24 is suppressed. be able to.

Further, in the present embodiment, for example, the bearing members 23L and 23R have a pair of side walls 23b provided at intervals in the longitudinal direction (X direction) of the main housing 11, for example.

According to such a configuration, for example, since the cross-sectional coefficients of the bearing members 23L and 23R are increased by the pair of side walls 23b, the rigidity and strength of the bearing members 23L and 23R are likely to be further increased.

[Modification example]
FIG. 8 is a perspective view of the electric steering column 10A of this modified example. The electric steering column 10A has the same configuration as the electric steering column 10 of the above embodiment. Therefore, the electric steering column 10A can obtain the same operations and effects as those in the above embodiment based on the same configuration.

However, in this modification, as shown in FIG. 8, the end faces 23b1 of the side wall 23b opposite to the swing arms 21L and 21R are along the inclined surface 60a of the tapered jig 60 (see FIG. 9). It differs from the above embodiment in that it is inclined. For example, the end surface 23b1 is inclined so as to approach the swing arms 21L and 21R on both sides in the axial direction as the distance from the upper wall 11a increases.

FIG. 9 is a front view illustrating a method of manufacturing the electric steering column 10A. FIG. 10 is a front view for explaining a method of manufacturing the electric steering column 10A, and is a view showing a state after FIG. 9. In FIGS. 9 and 10, the jig 60 is hatched for convenience. The jig 60 is provided with an escape hole for a shaft 22 that is recessed upward from the lower tip surface.

As shown in FIG. 9, also in this modification, first, the swing arm 21L, 21R, the shaft 22, and the bearing members 23L, 23R are integrated to assemble the subassembly 50 (S1). Next, the subassembly 50 is positioned in the longitudinal direction and the height direction with respect to the main housing 11 (S2).

Then, as shown in FIG. 10, a jig 60 is inserted between the pair of bearing members 23L and 23R from above, and the bearing members 23L and 23R are brought into contact with the swing arms 21L and 21R in the axial direction. It is fixed to the main housing 11 in this state (S3). In S3, for example, a step of compressing the flange portion 24d axially between the end wall 23a and the swing arms 21L and 21R by a jig 60, and fixing the pair of side walls 23b to the upper wall 11a by laser welding. The process etc. are included.

As described above, according to this modification, for example, by inserting the tapered jig 60 between the end faces 23b1 of the bearing members 23L and 23R, the bearing members 23L and 23R slide on both sides in the axial direction. It is guided to approach the swing arms 21L and 21R. Therefore, for example, it is possible to fix the pair of bearing members 23L, 23R to the main housing 11 in a state of being in axial contact with each of the swing arms 21L, 21R more easily, more smoothly, or more accurately. it can.

The shapes of the end surface 23b1 and the inclined surface 60a are not limited to this example, and are formed in a smooth curved shape (R shape) in the line of sight in the longitudinal direction, for example, as in the other modified examples shown in FIG. May be done. According to such a configuration, for example, wear of the end surface 23b1 and the inclined surface 60a can be suppressed.

Although the embodiments and modifications of the present invention have been illustrated above, the above-described embodiments and modifications are examples, and the scope of the invention is not intended to be limited. The above-described embodiment and modification can be implemented in various other forms, and various omissions, replacements, combinations, and changes can be made without departing from the gist of the invention. In addition, specifications such as each configuration and shape (structure, type, direction, type, size, length, width, thickness, height, number, arrangement, position, material, etc.) are changed as appropriate. Can be carried out.

10, 10A ... Electric steering column, 11 ... Main housing, 20 ... Tilt mechanism, 21L, 21R ... Swing arm, 22 ... Shaft, 23L, 23R ... Bearing member, 23a ... End wall (first wall), 23b ... Side wall (Second wall), 23b1 ... End face, 24 ... Sliding member, Ax2 ... Second center of rotation (center of rotation), Y ... Width direction (axial direction).

Claims (5)

The main housing, which is supported by the body so that the tilt angle can be changed,
A tilt mechanism that changes the tilt angle of the main housing with respect to the vehicle body,
With
The tilt mechanism
A shaft extending along the width direction of the main housing and
A pair of swing arms that are located on both sides of the main housing in the width direction, are fixed to the shaft, and can swing around the center of rotation of the shaft.
A state in which the member is separate from the main housing, is supported by the shaft so as to be swingable around the center of rotation and movable in the axial direction of the shaft, and is in contact with each of the swing arms in the axial direction. With the pair of bearing members fixed to the main housing
An electric steering column with. The bearing member is
The first wall facing the swing arm and
A second wall extending from the first wall to the side opposite to the swing arm and fixed to the main housing by welding.
A sliding member interposed between the first wall and the swing arm,
The electric steering column according to claim 1. The electric steering column according to claim 2, wherein the bearing member has a pair of the second walls provided at intervals in the longitudinal direction of the main housing. The electric steering column according to claim 2 or 3, wherein the second wall faces the side opposite to the swing arm and has an end face inclined so as to approach the swing arm as the distance from the main housing increases. A shaft extending along the width direction of the main housing, a pair of swing arms located on both sides of the main housing in the width direction, fixed to the shaft, and swingable around the center of rotation of the shaft. A step of assembling a subassembly by integrating a pair of bearing members which are members different from the main housing and are supported on the shaft so as to be swingable around the center of rotation and movable in the axial direction of the shaft. ,
The process of positioning the subassembly to the main housing and
A step of inserting a jig between the pair of bearing members and fixing the bearing members to the main housing in a state of being in contact with each of the swing arms in the axial direction.
A method of manufacturing an electric steering column.

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