JP5218255B2 - Steering device - Google Patents

Description

  The present invention relates to a steering device, and more particularly to a steering device that adjusts a telescopic position of a steering wheel by fitting an outer column and an inner column so as to be relatively slidable in an axial direction.

  There is a steering device that adjusts the telescopic position of a steering wheel by fitting an outer column and an inner column so as to be relatively slidable in an axial direction.

  In such a steering device, an axial slit (column slit) is formed in the outer column, the fastening rod is fastened to the vehicle body mounting bracket, and the clamp member of the outer column is elastically deformed at the slit portion by the side plate of the vehicle body mounting bracket. In general, a structure in which the outer column is telescopically clamped so as not to be slidable with respect to the inner column during a normal driving operation is generally used.

  A steering device having a slit formed in the outer column has an advantage that the outer column can be easily elastically deformed at the slit portion and the inner column can be clamped reliably. However, since the distance between the closed end of the slit and the axis of the clamping rod changes depending on the telescopic position, the lever of the operation lever necessary to elastically deform the outer column by a predetermined dimension is used on the lever principle. The operating force changes. Accordingly, since the operation force of the operation lever for clamping the outer column to the inner column differs depending on the telescopic position, it is difficult to clamp the outer column to the inner column with a stable telescopic clamping force.

  In addition, a steering device of a type in which the axis of the tightening rod is disposed between the axis of the outer column and the body mounting surface of the body mounting bracket, the shaft center of the tightening rod and the body mounting bracket are arranged depending on the tilt position. Since the distance from the vehicle body mounting surface changes, the lever operating force required for elastically deforming the side plate of the vehicle body mounting bracket by a predetermined dimension changes according to the lever principle. Therefore, since the operating force of the operating lever for clamping the outer column to the vehicle body mounting bracket differs depending on the tilt position, it is difficult to clamp the outer column to the vehicle body mounting bracket with a stable tilt clamping force.

  When the telescopic clamping force reaches a predetermined clamping force, the steering device shown in Patent Document 1 stops the inner surface of the clamp member in contact with the outer surface of the spacer, so that the upper limit of the telescopic clamping force is a predetermined magnitude. Can be regulated. However, since the number of parts increases in the steering device of Patent Document 1, there are problems that the parts cost is increased and the number of assembling steps is increased.

JP 2008-195180 A

  The present invention does not increase the number of parts, and suppresses fluctuations in the operating force of the operating lever that clamps the outer column to the inner column depending on the telescopic position, and enables steering with a stable telescopic clamping force. It is an object to provide an apparatus. In addition, the present invention does not increase the number of parts, suppresses fluctuations in the operating force of the operating lever that clamps the outer column to the body mounting bracket depending on the tilt position, and enables clamping with a stable tilt clamping force. It is an object of the present invention to provide a steering device.

The above problem is solved by the following means. That is, the first invention is an inner column, a hollow outer column externally fitted on the outer peripheral surface of the inner column so that the telescopic position can be adjusted, and a column slit formed in the outer column over a predetermined length in the axial direction. The outer column is formed so as to be able to approach and separate from each other through the column slit, and the inner peripheral surface of the outer column is expanded and contracted to clamp the outer peripheral surface of the inner column at a predetermined telescopic adjustment position. / A pair of clamping members to be unclamped, a vehicle body mounting bracket having a pair of left and right side plates that can be attached to the vehicle body and that touches the outer surface of the pair of clamping members and sandwiches the outer surface, and the side plate and clamp of the vehicle body mounting bracket The pair of clamp parts are inserted through the member and tighten the side plate of the vehicle body mounting bracket. A tightening rod for moving the vehicle mounting brackets toward and away from each other, and a contact portion with the side plate of the vehicle body mounting bracket is formed so as to make the side plate of the vehicle body mounting bracket difficult to bend as the telescopic adjustment length is increased. The clamping rod has an axial center disposed between the outer column axial center and the vehicle body mounting bracket body mounting surface, and the contact surface is more than the clamping rod axial center. The steering device is characterized in that it is formed on the axial center side of the outer column and protrudes outward in the vehicle width direction from the outer surface of the clamp member in the vicinity of the axial center of the clamping rod.

The second invention is a steering apparatus of the first aspect, the outer column is sandwiched in tilt position adjustable on the side plates of the mounting bracket, the end face of the vehicle body upper side of the side plates of the mounting bracket Is a steering device characterized in that a side plate slit formed so as to be inclined rearward of the vehicle body with respect to the vehicle body mounting surface of the vehicle body mounting bracket is formed.

  In the steering device of the present invention, on the outer surface of the clamp member, the contact surface on which the contact portion with the side plate of the vehicle body mounting bracket fluctuates so that the side plate of the vehicle body mounting bracket becomes difficult to bend as the telescopic adjustment length is increased. It has. Therefore, when the telescopic adjustment length is long, the side plate of the vehicle body mounting bracket is less likely to bend, so the operating force of the operating lever necessary to elastically deform the side plate and the clamp member by a predetermined dimension is almost constant. Maintained. Therefore, it can clamp with the stable telescopic clamping force.

  In the steering device of the present invention, a side plate slit formed to be inclined rearward of the vehicle body with respect to the vehicle body mounting surface of the vehicle body mounting bracket is formed on the end surface of the vehicle body mounting bracket on the vehicle body upper side. Accordingly, since the side plate of the vehicle body mounting bracket is easily bent when the tilt position is at the upper end, the operation force of the operation lever necessary to elastically deform the side plate by a predetermined dimension is maintained substantially constant. Therefore, it is possible to perform clamping with a stable tilt clamping force.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view showing a part of a steering apparatus according to the present invention and a part of the steering apparatus, and shows an embodiment applied to an electric power steering apparatus having a steering assist unit. It is a side view which shows the vehicle body mounting bracket periphery of the Example of this invention, and shows the state when the tilt position of a steering wheel is the upper end and the telescopic position is the shortest. It is an AA expanded sectional view of FIG. It is a perspective view which shows the outer column single-piece | unit of the Example of this invention. It is a side view which shows the vehicle body mounting bracket periphery of the Example of this invention, and shows the state when the tilt position of a steering wheel is the upper end and the telescopic position is the longest. It is BB expanded sectional drawing of FIG. It is a side view which shows the vehicle body mounting bracket periphery of the Example of this invention, and shows the state when the tilt position of a steering wheel is a lower end and the telescopic position is the shortest. It is CC sectional drawing of FIG. It is a side view which shows the vehicle body mounting bracket periphery of the Example of this invention, and shows the state when the tilt position of a steering wheel is the lower end and the telescopic position is the longest. It is DD expanded sectional drawing of FIG.

  In the following embodiment, an example will be described in which the present invention is applied to a tilt / telescopic steering device in which both the tilt position and the telescopic position can be adjusted. FIG. 1 shows the entire steering apparatus of the present invention, and is a side sectional view of a part thereof, showing an embodiment applied to an electric power steering apparatus having a steering assisting portion.

  As shown in FIG. 1, the steering device of the present invention includes a steering shaft 12 on which a steering wheel 121 can be mounted on the rear side of the vehicle body (the right side in FIG. 1), a column 1 inserted through the steering shaft 12, and the steering shaft. An assist device (steering assisting portion) 20 for applying an assist torque to the steering wheel 12 and a steering gear 27 connected to the front side of the vehicle body of the steering shaft 12 (left side in FIG. 1) via a rack / pinion mechanism (not shown). And.

  The steering shaft 12 is spline-fitted between a female steering shaft 12A and a male steering shaft 12B so as to be able to transmit rotational torque and to be relatively movable in the axial direction. Therefore, when the female steering shaft 12A and the male steering shaft 12B collide, the spline fitting portion moves relative to each other so that the total length can be shortened.

  Further, the cylindrical column 1 through which the steering shaft 12 is inserted combines the outer column 11 and the inner column 10 so that they can be telescopically moved. It has a so-called collapsible structure in which the entire length is reduced while absorbing.

  The vehicle body front side end portion of the inner column 10 is press-fitted and fixed to the vehicle body rear side end portion of the gear housing 21. Further, the front end portion of the male steering shaft 12B on the vehicle body is passed through the inside of the gear housing 21 and connected to the rear end portion of the assist device 20 on the rear side of the input shaft (not shown).

  An intermediate portion of the column 1 is supported on a part of the vehicle body 18 such as a lower surface of the dashboard by the vehicle body mounting bracket 3. In addition, when a locking portion (not shown) is provided between the vehicle body mounting bracket 3 and the vehicle body 18 and the vehicle body mounting bracket 3 is subjected to an impact in the direction toward the front side of the vehicle body, It is disengaged from the locking portion and moves to the front side of the vehicle body.

  The upper end portion of the gear housing 21 is also supported on a part of the vehicle body 18. In this embodiment, the height position of the steering wheel 121 and the longitudinal position of the vehicle body can be freely adjusted by providing a tilt mechanism and a telescopic mechanism.

  The output shaft 23 protruding from the end face on the front side of the vehicle body of the gear housing 21 is connected to the rear end portion of the intermediate shaft 16 via the universal joint 15. An input shaft 28 of the steering gear 27 is connected to the front end portion of the intermediate shaft 16 via another universal joint 17. The intermediate shaft 16 is fitted on the vehicle body front side of the male intermediate shaft (male shaft) 16A on the vehicle body rear side of the female intermediate shaft (female shaft) 16B, so that rotational torque can be transmitted and relative movement in the axial direction is possible. Is fitted.

  A pinion (not shown) is coupled to the input shaft 28. A rack (not shown) fitted in the steering gear 27 so as to be reciprocally slidable meshes with the pinion, and the rotation of the steering wheel 121 moves the tie rod 29 to steer a wheel (not shown).

  A case 261 of an electric motor 26 is fixed to the gear housing 21 of the assist device 20, and a worm is coupled to a rotating shaft (not shown) of the electric motor 26. A worm wheel (not shown) is attached to the output shaft 23, and the worm of the rotating shaft of the electric motor 26 is engaged with the worm wheel.

  A torque sensor (not shown) is provided around an intermediate portion of the axial length of the output shaft 23. The direction and magnitude of torque applied from the steering wheel 121 to the steering shaft 12 is detected by a torque sensor.

  The electric motor 26 is driven according to the detected value of the torque sensor, and auxiliary torque is generated in a predetermined direction in a predetermined direction on the output shaft 23 via a speed reduction mechanism composed of a worm and a worm wheel.

  FIG. 2 is a side view showing the periphery of the vehicle body mounting bracket according to the embodiment of the present invention, and shows a state when the tilt position of the steering wheel is the upper end and the telescopic position is the shortest. FIG. 3 is an AA enlarged sectional view of FIG. FIG. 4 is a perspective view showing a single outer column according to an embodiment of the present invention.

  As shown in FIGS. 2 to 4, the column 1 includes a hollow cylindrical outer column (upper column) 11 and an inner slidably fitted in the left side (front side of the vehicle body) of the outer column 11 so as to be slidable in the axial direction. It is composed of a column (lower column) 10.

  A vehicle body mounting bracket 3 is attached to the outer column 11 so as to sandwich the outer column 11 from both the left and right sides. The vehicle body mounting bracket 3 is detachably attached to the front side of the vehicle body via a capsule 37 made of aluminum alloy or the like fixed to the vehicle body 18.

  When the driver collides with the steering wheel 121 during the secondary collision and a large impact force acts, the outer column 11 disengages the vehicle body mounting bracket 3 from the capsule 37 toward the front side of the vehicle body and absorbs the impact energy at the time of the collision.

  The vehicle body mounting bracket 3 includes an upper plate 32 and side plates 33 and 34 extending downward from the upper plate 32. A pair of clamp members 41 </ b> A and 41 </ b> B are integrally formed on the outer column 11 so as to protrude above the vehicle body of the outer column 11 (upward in FIG. 3). That is, the clamp members 41 </ b> A and 41 </ b> B are formed on the vehicle body upper side than the axis of the steering shaft 12. The outer surfaces 42A, 42B of the clamp members 41A, 41B are slidably in contact with the inner surfaces 331, 341 of the side plates 33, 34 of the vehicle body mounting bracket 3.

  In the embodiment of the present invention, the outer column 11 is an integrally molded product made of aluminum die casting, but may be one in which clamp members 41A and 41B are welded to a steel pipe. Further, for the purpose of weight reduction, it may be made of magnesium die casting.

  Tilt adjusting long grooves 35 and 36 are formed in the side plates 33 and 34 of the vehicle body mounting bracket 3. The clamp members 41A and 41B are formed with telescopic adjustment long grooves 43A and 43B extending in the left-right direction in FIG. 3 and extending in parallel with the direction of the axis 112 of the outer column 11.

The round rod-shaped tightening rod 5 is inserted from the left side of FIG. 3 through the tilt adjusting long grooves 35 and 36 and the telescopic adjusting long grooves 43A and 43B. A cylindrical head 51 is formed at the left end of the clamping rod 5. Between the outer surface 332 of the side plate 33 and the head 51, a fixed cam 53, a movable cam 54, and an operation lever 55 are fitted on the outer periphery of the left end of the tightening rod 5 in this order. The shaft center 52 of the clamping rod 5 is disposed between the shaft center 112 of the outer column 11 and the vehicle body mounting surface 31 of the vehicle body mounting bracket 3.

  A rotation preventing portion (not shown) having a rectangular cross section is formed on the outer periphery of the right end of the fixed cam 53. This detent portion fits into the tilt adjusting long groove 35 to prevent the fixed cam 53 from rotating with respect to the vehicle body mounting bracket 3 and along the tilt adjusting long grooves 35 and 36 when the tilt position of the outer column 11 is adjusted. The fixed cam 53 and the tightening rod 5 are slid.

  Complementary inclined cam surfaces are formed on opposite end surfaces of the fixed cam 53 and the movable cam 54 and mesh with each other. When the operation lever 55 connected to the left side surface of the movable cam 54 is operated by hand, the movable cam 54 rotates with respect to the fixed cam 53.

  On the outer periphery of the right end of the clamping rod 5, a thrust bearing 56 and a nut 57 are fitted in this order in contact with the outer surface 342 of the side plate 34, and a female screw formed on the inner diameter portion of the nut 57 is connected to the clamping rod 5. Is screwed into a male screw 58 formed at the right end of the.

  As shown in FIGS. 3 to 4, a column slit 44 penetrating from the outer peripheral surface 11 </ b> A of the outer column 11 to the inner peripheral surface 11 </ b> B is formed on the upper surface of the outer column 11 in parallel with the axial direction of the outer column 11. Yes. The column slit 44 has a T-shaped slit 442 cut in a direction perpendicular to the axis of the outer column 11 in the vicinity of the vehicle body front side end surface 111 of the outer column 11, and has a certain width from the T-shaped slit 442. An arcuate closed end portion 441 is formed at a substantially intermediate position in the axial direction of the outer column 11, extending in parallel to the vehicle body rear side, passing through the vehicle body rear side end surfaces 45A and 45B of the clamp members 41A and 41B. . An open end portion opened to the vehicle body front side end surface 111 of the outer column 11 may be formed on the vehicle body front side of the column slit 44.

  When the operation lever 55 is rotated in the clamping direction, the clamp members 41A and 41B are elastically deformed inward, and the width of the column slit 44 narrows with the closed end 441 as a fulcrum. Therefore, the inner peripheral surface 11B of the outer column 11 is reduced in diameter, and the outer peripheral surface 10A of the inner column 10 is clamped (telescopic clamp).

  When the telescopic position shown in FIG. 2 is the shortest, the distance between the axis 52 of the tightening rod 5 and the closed end 441 is small, so that the clamp members 41A and 41B are not easily elastically deformed. Further, when the telescopic position shown in FIG. 5 is the longest, the distance between the shaft center 52 of the tightening rod 5 and the closed end 441 is large, and therefore the clamp members 41A and 41B are easily elastically deformed by the lever principle. Become.

  As shown in FIGS. 2 and 3, side plate slits 38, 38 are formed in end surfaces 333, 343 on the vehicle body upper side of the side plates 33, 34 of the vehicle body mounting bracket 3. In FIG. 2, only the side plate slit 38 on the side plate 33 side is visible. The side plate slits 38, 38 are formed on the vehicle body front side with respect to the tilt adjusting long grooves 35, 36, and are inclined with respect to the vehicle body attachment surface 31 toward the vehicle body rear side. The inclination angle is preferably approximately 45 degrees, but is not limited to 45 degrees and may be any number of times. When the tilt position shown in FIG. 2 is at the upper end, the side plate slits 38 and 38 easily bend the side plates 33 and 34 of the vehicle body mounting bracket 3 when the operation lever 55 is rotated in the clamping direction and the vehicle body mounting bracket 3 is tightened. doing.

  As shown in FIG. 4 with hatching, contact surfaces 46A and 46B are formed on the outer surfaces 42A and 42B of the clamp members 41A and 41B. In FIG. 4, only the contact surface 46A on the one outer surface 42A side is visible. The contact surfaces 46A and 46B are formed closer to the shaft center 112 side (vehicle body lower side) of the outer column 11 than the telescopic adjustment long grooves 43A and 43B (the shaft center 52 of the tightening rod 5), and the inner surface 331 of the vehicle body mounting bracket 3 is formed. , 341 can be contacted. Further, the contact surfaces 46A, 46B are formed so as to protrude by a length L (see FIG. 4) outward in the vehicle width direction from the outer surfaces 42A, 42B at the peripheral edges of the telescopic adjustment long grooves 43A, 43B. If the inner side surfaces 331 and 341 of the vehicle body mounting bracket 3 and the contact surfaces 46A and 46B can contact when the operation lever 55 is rotated in the clamping direction and the vehicle body mounting bracket 3 is tightened, the contact surfaces 46A and 46B are The outer side surfaces 42A and 42B may not protrude outward in the vehicle width direction.

  As shown by hatching in FIG. 2, when the tilt position is the upper end (tilt angle α1) and the telescopic position is the shortest, the contact area between the inner side surfaces 331 and 341 of the vehicle body mounting bracket 3 and the contact surfaces 46A and 46B is It is small and is in contact at a position separated from the axial center 52 of the tightening rod 5 toward the front side of the vehicle body. As the telescopic adjustment length is increased from the shortest telescopic position in FIG. 2, the contact portions between the inner side surfaces 331 and 341 of the vehicle body mounting bracket 3 and the contact surfaces 46A and 46B vary.

  As shown by hatching in FIG. 5, when the tilt position is the upper end and the telescopic position is the longest, the inner side surfaces 331 and 341 and the contact surfaces 46 A and 46 B of the vehicle body mounting bracket 3 are connected to the shaft center 52 of the tightening rod 5. They are touching at the same longitudinal position. Therefore, when the telescopic position shown in FIG. 5 is the longest, the side plates 33 and 34 of the vehicle body mounting bracket 3 are most hardly bent when the operation lever 55 is rotated in the clamping direction and the vehicle body mounting bracket 3 is tightened.

  When the operation lever 55 is rotated in the clamping direction, the mountain of the inclined cam surface of the movable cam 54 rides on the mountain of the inclined cam surface of the fixed cam 53, and at the same time the pulling rod 5 is pulled to the left in FIG. Push to the right in FIG.

  The right side plate 34 is pushed to the left by the left end surface of the thrust bearing 56 to deform the side plate 34 inward. Then, the inner side surface 341 of the side plate 34 is strongly pressed against the outer side surface 42B of the clamp member 41B.

  At the same time, the left side plate 33 is pushed to the right by the right end surface of the fixed cam 53 to deform the side plate 33 inward. Then, the inner surface 331 of the side plate 33 is strongly pressed against the outer surface 42A of the clamp member 41A. As a result, the inner surfaces 331 and 341 of the side plates 33 and 34 are strongly pressed against the outer surfaces 42A and 42B of the clamp members 41A and 41B, and the clamp members 41A and 41B are tilt-clamped to the vehicle body mounting bracket 3.

  At the same time, the clamp members 41A and 41B are elastically deformed inward with the closed end 441 of the column slit 44 as a fulcrum, and the width of the column slit 44 is narrowed. Therefore, the inner peripheral surface 11B of the outer column 11 is reduced in diameter, and the outer peripheral surface 10A of the inner column 10 is clamped (telescopic clamp).

  When the tilt position shown in FIGS. 2 and 3 is the upper end and the telescopic position is the shortest, the distance between the axial center 52 of the clamping rod 5 and the closed end 441 of the column slit 44 (the distance in the vehicle longitudinal direction) is small. By the lever principle, the clamp members 41A and 41B are not easily elastically deformed. Further, since the distance between the shaft center 52 of the tightening rod 5 and the vehicle body attachment surface 31 (distance in the vertical direction of the vehicle body) is small, the side plates 33 and 34 of the vehicle body attachment bracket 3 are hardly elastically deformed by the lever principle.

  However, as shown by hatching in FIG. 2, the inner side surfaces 331 and 341 of the vehicle body mounting bracket 3 and the contact surfaces 46A and 46B are in contact with each other at a position spaced further to the front side of the vehicle body than the axis 52 of the tightening rod 5. . Further, side plate slits 38 are formed in the side plates 33 and 34.

  Accordingly, since the side plates 33 and 34 of the vehicle body mounting bracket 3 are easily bent, the operation force of the operation lever necessary to elastically deform the side plates 33 and 34 and the clamp members 41A and 41B by a predetermined dimension is substantially constant. Maintained. Accordingly, it is possible to perform clamping with a stable tilt clamping force and telescopic clamping force.

  When the tilt position shown in FIGS. 5 and 6 is the upper end and the telescopic position is the longest, the distance between the axial center 52 of the clamping rod 5 and the closed end 441 of the column slit 44 is the largest. The clamp members 41A and 41B are most easily elastically deformed.

  However, as shown by hatching in FIG. 5, the inner side surfaces 331 and 341 and the contact surfaces 46 </ b> A and 46 </ b> B of the vehicle body mounting bracket 3 are in contact with the axial center 52 of the fastening rod 5 at the same position in the longitudinal direction of the vehicle body. Accordingly, since the side plates 33 and 34 of the vehicle body mounting bracket 3 are difficult to bend, the operation force of the operation lever necessary for elastically deforming the side plates 33 and 34 and the clamp members 41A and 41B by a predetermined dimension is substantially constant. Maintained. Accordingly, it is possible to perform clamping with a stable tilt clamping force and telescopic clamping force.

  When the tilt position shown in FIGS. 7 and 8 is the lower end (tilt angle α2) and the telescopic position is the shortest, the distance between the axial center 52 of the tightening rod 5 and the closed end 441 of the column slit 44 is small, so that the clamp The members 41A and 41B are not easily elastically deformed.

  However, as shown in FIG. 7, the inner side surfaces 331 and 341 of the vehicle body mounting bracket 3 are not in contact with the contact surfaces 46A and 46B. Therefore, since the side plates 33 and 34 of the vehicle body mounting bracket 3 are easily bent, the operation force of the operation lever necessary for elastically deforming the side plates 33 and 34 and the clamp members 41A and 41B by a predetermined dimension is substantially constant. Maintained. Accordingly, it is possible to perform clamping with a stable tilt clamping force and telescopic clamping force.

  When the tilt position shown in FIGS. 9 and 10 is the lower end and the telescopic position is the longest, the distance between the shaft center 52 of the clamping rod 5 and the closed end 441 of the column slit 44 is large. The members 41A and 41B are easily elastically deformed.

  However, as shown by hatching in FIG. 9, the inner side surfaces 331 and 341 of the vehicle body mounting bracket 3 are in contact with the contact surfaces 46A and 46B and are in contact with the axial center 52 of the tightening rod 5 at the same position in the longitudinal direction of the vehicle body. Accordingly, since the side plates 33 and 34 of the vehicle body mounting bracket 3 are difficult to bend, the operation force of the operation lever necessary for elastically deforming the side plates 33 and 34 and the clamp members 41A and 41B by a predetermined dimension is substantially constant. Maintained. Accordingly, it is possible to perform clamping with a stable tilt clamping force and telescopic clamping force.

  In the above embodiment, the example in which the present invention is applied to the tilt / telescopic steering apparatus has been described. However, the present invention may be applied to a telescopic steering apparatus in which only the telescopic position can be adjusted.

DESCRIPTION OF SYMBOLS 1 Column 10 Inner column 10A Outer peripheral surface 11 Outer column 11A Outer peripheral surface 11B Inner peripheral surface 111 Car body front side end surface 112 Axis 12 Steering shaft 12A Female steering shaft 12B Male steering shaft 121 Steering wheel 15 Universal joint 16 Intermediate shaft 16A Male intermediate shaft 16B Female intermediate shaft 17 Universal joint 18 Car body 20 Assist device 21 Gear housing 23 Output shaft 26 Electric motor 261 Case 27 Steering gear 28 Input shaft 29 Tie rod 3 Car body mounting bracket 31 Car body mounting surface 32 Upper plate 33, 34 Side plates 331, 341 Side surface 332, 342 Outer side surface 333, 343 End face 35, 36 on the upper side of the vehicle body 35, 36 Tilt adjustment long groove 37 Capsule 38 Side plate slit 41A, 41B Class Pump member 42A, 42B Outer side surface 43A, 43B Telescopic adjustment long groove 44 Column slit 441 Closed end 442 T-shaped slit 45A, 45B Car body rear side end surface 46A, 46B Contact surface 5 Tightening rod 51 Head 52 Axle 53 Fixed cam 54 Movable cam 55 Operation lever 56 Thrust bearing 57 Nut 58 Male thread

Claims (2)

Inner column,
A hollow outer column that is externally fitted to the outer peripheral surface of the inner column so that the telescopic position can be adjusted,
A column slit formed in the outer column over a predetermined length in the axial direction;
The outer column is formed so as to be able to approach and separate from each other via the column slit, and the inner peripheral surface of the outer column is expanded and contracted to clamp the outer peripheral surface of the inner column at a predetermined telescopic adjustment position. A pair of clamping members to be unclamped,
A vehicle body mounting bracket having a pair of left and right side plates that are attachable to the vehicle body, contact the outer surface of the pair of clamp members, and sandwich the outer surface;
A clamping rod that is inserted into the side plate and the clamp member of the vehicle body mounting bracket, tightens the side plate of the vehicle body mounting bracket, and moves the pair of clamp members closer to and away from each other;
A contact surface is formed on the outer surface of the clamp member, and the contact portion with the side plate of the vehicle body mounting bracket fluctuates so as to make the side plate of the vehicle body mounting bracket difficult to bend as the telescopic adjustment length increases.
The shaft center of the tightening rod is disposed between the shaft center of the outer column and the vehicle body mounting surface of the vehicle body mounting bracket,
The contact surface is formed on the axial center side of the outer column with respect to the axial center of the clamping rod, and is formed to protrude outward in the vehicle width direction from the outer surface of the clamp member near the axial center of the clamping rod. The steering apparatus characterized by being made. The steering apparatus according to claim 1 , wherein
The outer column is sandwiched between the side plates of the vehicle body mounting bracket so that the tilt position can be adjusted,
The steering device according to claim 1, wherein a side plate slit formed to be inclined rearward of the vehicle body with respect to the vehicle body mounting surface of the vehicle body mounting bracket is formed on an end surface of the vehicle body mounting bracket on the vehicle body upper side.

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