JP2009018781A - Steering column device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent generation of catching abnormal sound on side faces of side brackets due to inclination of a fixed cam when adjusting tilting. <P>SOLUTION: A lock bolt is inserted into elongated holes 16a and 16b for telescoping formed in a distance bracket 16 and elongated holes 13a and 14a for tilting formed in a pair of side brackets 13 and 14. The fixed cam 20 regulated in rotation is inserted into the lock bolt 17. A movable cam 23 for pressing the fixed cam 20 is inserted into the lock bolt 17. An operation lever 21 is connected to the movable cam 23 via a lock nut 24. A pair of resin tubes 27a and 27b to reduce shock when internal surface walls at both ends of the elongated holes 16a and 16b collide with each other are inserted into the lock bolt 17. A spring 30 for pressing is provided between the resin tubes 27a and 27b. The resin tubes 27a and 27b are held in the elongated holes 16a and 16b. An end part of the one resin tube 27a is made to abut on a projecting part 20b of the fixed cam 20. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a steering column device, and prevents a noise from being generated due to a member constituting a locking pressing means being caught on a side surface of a side bracket when a steering wheel is tilt-adjusted after unlocking a jacket. Is.

  A steering column device for a vehicle is provided with a tilt mechanism that adjusts the vertical position of the steering wheel and a telescopic mechanism that adjusts the axial position of the steering wheel in order to keep the occupant's driving posture in an optimum state.

  As a conventional steering column device having a tilt mechanism and a telescopic mechanism, for example, the one described in Patent Document 1 is known. In this steering column device, a distance bracket coupled to the lower part of the jacket is sandwiched between a pair of fixing members on the left and right sides that are coupled to the vehicle body, and formed in a vertical bracket and a distance bracket formed in the pair of fixing members. Insert the lock bolt into the axially elongated hole, operate the operation lever to rotate the movable cam to press the fixed cam, tighten the lock bolt to lock the distance bracket and jacket, To unlock.

When performing tilt adjustment or telescopic adjustment, loosen the lock bolt by operating the operation lever and unlock the lock bolt, and place the jacket within the range where the lock bolt can move within the long holes formed in the left and right fixing members. Move the distance bracket that has the long hole relative to the lock bolt within the range of the long hole in the axial direction, and then operate the operation lever again to tighten the lock bolt and lock it. To do.
JP 2006-182062 A

  However, when telescopic adjustment is performed, if the operation lever is operated to release the pressing of the fixed cam by the movable cam, the lock bolt is released, so the weight on the side where the operation lever is provided in the length direction of the lock bolt is reduced. When the tilt adjustment is performed by moving the lock bolt up and down inside the long holes formed in the left and right fixing members as described above, the lock bolt tilts and the fixing cam tilts with respect to the fixing member. The tilted fixed cam is caught on the side surface of the fixed member, and the vibration generated at that time is transmitted to the tilt lever to generate noise such as chatter noise. Therefore, a leaf spring is interposed between the fixed cam and the fixed member, but when performing tilt adjustment, the leaf spring is inserted through the lock bolt and moves together with the fixed cam. Sliding occurs between the members, and no noise can be eliminated.

  On the other hand, to suppress the generation of abnormal noise, an elastic member is interposed between the fixed cam and the movable cam, and the fixed cam is forcibly brought into contact with the fixed member when the lock is released to avoid the inclination of the fixed cam. However, the sliding resistance increases during tilt adjustment, resulting in poor operability.

  Therefore, an object of the present invention is to provide a steering column device that solves the above-described problems.

  According to a first aspect of the present invention, there is provided a lower jacket coupled to a vehicle body and rotatably supporting a lower shaft, and an upper jacket provided rotatably relative to the lower jacket in the axial direction and rotatably supporting the upper shaft. A pair of side brackets coupled to the vehicle body on the left and right sides, a distance bracket disposed between the pair of side brackets and coupled to the upper jacket, and a telescopic slot formed in the distance bracket along the axial direction A long slot for tilt formed in the pair of side brackets along the vertical direction, a lock bolt inserted through the long slot for tilt and the long hole for telescopic, and provided at one end of the lock bolt. Press one side of the pair of side brackets in the axial direction of the lock bolt to A pressing means for locking or unlocking the upper jacket by sandwiching the distance bracket, and an operating lever for operating the pressing means, and inner walls at both ends of the telescopic elongated hole collide with the lock bolt. In the steering column device in which an elastic cylinder for reducing impact is inserted into the lock bolt, the elastic cylinder is divided, and the pair of elastic cylinders are mutually connected between the divided elastic cylinders. Pressure-contact biasing means for biasing the elastic cylinders in the direction away from each other and holding the ends of the respective elastic cylinders inside the respective telescopic elongated holes, and providing one end of the pair of elastic cylinders for the tilting. It is made to pass through a long hole and is made to contact | abut to the end surface of the said press means.

  According to the present invention, the pair of elastic cylinders are urged toward each other outward by the pressing urging means, and one end of the pair of elastic cylinders passes through the telescopic elongated hole to the end surface of the pressing means. Even if the pressing by the pressing means is released by releasing the lock and the pressing means becomes free, the pressing means is urged toward the operation lever via the elastic cylinder by the pressing urging means. Therefore, the lock bolt is prevented from being tilted by the weight of the operation lever. For this reason, the pressing means is not inclined with respect to the side bracket, and a gap is generated between the pressing means and the side bracket. Therefore, when the tilt is adjusted, the pressing means is not caught on the side surface of the side bracket, and no abnormal noise such as chatter is generated.

  In addition, when moving the distance bracket together with the upper jacket in the axial direction to release the lock and adjust the telescopic adjustment, the telescopic elongated holes move relative to the lock bolt, so that the telescopic elongated holes are positioned at both ends. Even if the face wall collides with the lock bolt, the elastic cylinder is interposed between the inner wall and the lock bolt, so that the impact at the time of the collision is alleviated. As described above, even when the pressing by the pressing means disappears due to the unlocking, the end of one elastic cylinder is always in contact with the end face of the pressing means, and the inner walls at both ends of the long hole are always attached to the elastic cylinder. It will collide with the lock bolt.

  According to a second aspect of the present invention, in the steering column device according to the first aspect, as the pressing means, a fixed cam inserted through the lock bolt and constrained to rotate, and a rotation inserted through one end of the lock bolt. In this case, a cam mechanism including a movable cam that pushes out the fixed cam is provided, and the operation lever is provided on the movable cam.

  According to the present invention, when the lock is released, the fixed cam is urged toward the movable cam via the elastic cylinder by the pressing urging means. Therefore, the fixed cam does not get caught on the side surface of the side bracket during tilt adjustment, and no abnormal noise such as chatter noise is generated.

  According to a third aspect of the present invention, in the steering column device according to the first aspect, as the pressing means, a nut member screwed into one end of the lock bolt, and between the nut member and one of the pair of side brackets. And the operation lever is provided on the nut member.

  According to the present invention, when the lock is released, the collar is urged toward the nut member by the pressure contact urging means via the elastic cylinder. Therefore, the collar is not caught by the side surface of the side bracket during the tilt adjustment, and abnormal noise such as chatter noise is not generated.

  According to the steering column device of the first aspect, since the pair of elastic cylinders sandwiching the pressing urging means are inserted through the lock bolt, the pair of elastic cylinders are directed outward by the pressing urging means. The one end of the pair of elastic cylinders passes through the telescopic elongated hole and comes into contact with the end surface of the pressing means. When the lock is released, the pressing by the pressing means is released and the pressing means becomes free. Even so, the pressing means is maintained in a state where it is urged toward the operation lever by the pressure urging means via the elastic cylinder, and the lock bolt is prevented from being inclined due to the weight of the operation lever. For this reason, the pressing means is not inclined with respect to the side bracket, and a gap is generated between the pressing means and the side bracket. Therefore, when the tilt is adjusted, the pressing means is not caught on the side surface of the side bracket, and no abnormal noise such as chatter is generated.

  In addition, the end of each elastic cylinder is held inside each telescopic elongated hole, and the inner wall of both ends of the telescopic elongated hole is mitigated when the collision occurs with the lock bolt. When moving the distance bracket together with the upper jacket in the axial direction to release and adjust the telescopic adjustment, the telescopic elongated holes move relative to the lock bolt, and the inner walls of both ends of the telescopic elongated holes are locked. Even if it collides with the bolt, the elastic cylinder is interposed between the inner wall and the lock bolt, so that the impact at the time of collision is reduced. As described above, even when the pressing by the pressing means disappears due to the unlocking, the end of one elastic cylinder is always in contact with the end face of the pressing means, and the inner walls at both ends of the long hole are always attached to the elastic cylinder. It will collide with the lock bolt.

  According to the steering column device of the second aspect, as the pressing means, the fixed cam inserted through the lock bolt and restrained from rotating, and the movable cam that is inserted through one end of the lock bolt and rotates to push the fixed cam. Since the movable cam is provided with an operation lever, when the lock is released, the fixed cam is biased toward the movable cam via the elastic cylinder by the biasing biasing means. The Therefore, the fixed cam does not get caught on the side surface of the side bracket during tilt adjustment, and no abnormal noise such as chatter noise is generated.

  According to the steering column device of the third aspect, as the pressing means, a nut member screwed into one end of the lock bolt and a collar disposed between the nut member and one of the pair of side brackets are provided. Since the operation lever is provided on the nut member, the collar is urged toward the nut member via the elastic cylinder by the urging means for press contact when unlocking. Therefore, the collar is not caught by the side surface of the side bracket during the tilt adjustment, and abnormal noise such as chatter noise is not generated.

Embodiments of a steering column apparatus according to the present invention will be described below.
(A) Embodiment 1
First, the first embodiment will be described. In this steering column device, the tilt mechanism portion is locked and unlocked, and the telescopic mechanism portion is locked and unlocked by a single operating lever.

  As shown in FIG. 5, a bush 11 is attached to an insertion hole 2 a formed in the dash panel 2, and the steering column device 1 is coupled to the vehicle body via the bush 11 and the attachment portion 3. As shown in FIG. 4, a jacket 6 for covering the steering shaft 5 is composed of a right upper jacket 6a and a left lower jacket 6b provided so as to be relatively movable so as to cover a lower portion of the upper jacket 6a. It is configured. The left lower jacket 6b includes a right first lower jacket 6c and a second lower jacket 6d inserted on the left side of the first lower jacket 6c. The first lower jacket 6c and the second lower jacket 6d are formed with a protruding portion 7a projecting from the inner peripheral surface on the left side of the first lower jacket 6c, and the second lower jacket 6c inside the left side of the first lower jacket 6c. The right side of the jacket 6d is press-fitted and integrated.

  The steering shaft 5 is provided inside the jacket 6. The steering shaft 5 includes a hollow upper shaft 5a to which a steering wheel is attached at the right end, and a solid lower shaft 5b that is slidably coupled in the axial direction to the left side of the upper shaft 5a via a spline coupling portion (not shown). It is composed of The upper shaft 5a is rotatably supported inside the upper jacket 6a via a bearing 8a disposed on the right side and a bearing 8b disposed on the left side. On the other hand, the lower shaft 5b is rotatably supported inside the second lower jacket 6d via a bearing 8c disposed on the left side. Resin sleeves 9 and 10 shown in FIG. 3 are provided between the upper jacket 6a and the first lower jacket 6c and between the upper jacket 6a and the second lower jacket 6d so that the telescopic operation can be performed smoothly. Yes. The resin sleeves 9 and 10 are formed with slits 9a and 10a, and the diameter can be freely reduced. A convex portion 9b that protrudes to the left and right is formed on the outer peripheral surface of the resin sleeve 9, and the convex portion 9b projects to the outside from an insertion hole 7b formed in the first lower jacket 6c.

  A tilt / telescopic mechanism 12 is provided so that the steering wheel can be tilted in the vertical direction together with the right upper shaft 5a and the upper jacket 6a or telescopic in the axial direction. Details will be described below.

  As shown in FIG. 3, in order to support the jacket 6 on the vehicle body, a pair of side brackets 13 and 14 are provided on the left and right. That is, the mounting seat 15 is coupled to the vehicle body via a bolt (not shown) inserted through the hole 15 a of the mounting seat 15, and the side brackets 13 and 14 are detachably attached to the mounting seat 15.

  The side brackets 13 and 14 are formed in a substantially inverted L shape, and inner peripheral edges 13c and 14c are formed in the horizontal portions of the side brackets 13 and 14, respectively. On the other hand, a slide groove 15 b is formed around the mounting seat 15. The inner peripheral edges 13c and 14c of the side brackets 13 and 14 are inserted into the slide groove 15b from the left side which is the front of the vehicle body. Resin holes 15c are formed in the mounting seat 15, while resin holes 13d and 14d are formed in the side brackets 13 and 14, and mounting is performed by pouring molten resin into the resin holes 15c and the resin holes 13d and 14d. The seat 15 and the side brackets 13 and 14 are coupled.

  An energy absorbing member 34 is disposed on the lower surface of the mounting seat 15, and the energy absorbing member 34 is attached together with the mounting seat 15 by inserting the bolts for mounting the mounting seat 15 into holes 34 a of the energy absorbing member 34. It is connected to the car body. In this way, the engagement portion 34b in the front of the vehicle body in the energy absorbing member 34 coupled to the vehicle body is engaged with the notches 13e and 14e on the front side of the side brackets 13 and 14. When an excessive load is applied to the side brackets 13 and 14 toward the left, which is the front of the vehicle body, due to the secondary collision, the resin flowing into the resin holes 15c and the resin holes 13d and 14d is sheared, and the side brackets 13 and 13 are sheared. , 14 move toward the left side. Then, since the engaging part 34b is pulled to the left side, the energy absorbing member 34 is torn along the guide line 34c, and the impact due to the secondary collision is absorbed.

  A jacket 6 that supports the steering shaft 5 is disposed between the side brackets 13 and 14. The jacket 6 is configured by inserting the left side of the upper jacket 6a into the right side of the first lower jacket 6c in the lower jacket 6b via the resin sleeve 9, and the inserted portions slide on each other. It is a movable superposition part. And the said convex part 9b which protrudes outside from the insertion hole 7b of the 1st lower jacket 6c is contact | abutting to the inner surface of the side brackets 13 and 14. FIG.

  The rear side of the vehicle body of the distance bracket 16 having a substantially U-shaped cross section is welded to the lower surface of the upper jacket 6a in FIG. On both sides of the distance bracket 16, telescopic long holes 16a and 16b are formed along the axial direction, which is the length direction of the steering shaft 5, as shown in FIG. On the other hand, the pair of side brackets 13 and 14 are formed with long slots for tilt 13a and 14a along the vertical direction. A lock bolt 17 is inserted into the telescopic long holes 16a and 16b and the tilt long holes 13a and 14a. A pressing means 18 is provided for pressing one of the pair of side brackets 13 and 14 in the axial direction of the lock bolt 17 and holding the distance bracket 16 by the pair of side brackets 13 and 14 to lock or unlock the upper jacket 6a. It has been.

  The configuration of the pressing means 18 will be described below. In order to hold the distance bracket 16 between the side brackets 13 and 14, a cam mechanism 22 constituting the pressing means 18 is provided at the tip of the lock bolt 17 passing through the side brackets 13 and 14 on the side opposite to the head 17 a. Is provided. As shown in FIG. 1, the cam mechanism 22 is inserted in the vicinity of the tip of the lock bolt 17 so as to be movable in the axial direction of the lock bolt 17, and is loosely fitted into the tilt long hole 14 a to restrict the rotation. 20 and a movable cam 23 inserted in the vicinity of the tip of the lock bolt 17 and rotatable. The fixed cam 20 is formed with a cam surface 20a formed by alternately forming a plurality of pairs in the circumferential direction along the circumferential direction, the lower portion and the higher portion, and a slope that smoothly connects the lower portion and the higher portion. Yes. On the other hand, the movable cam 23 is formed with a cam surface 23a in which a plurality of sets of protrusions that slide with respect to the low, inclined, and high portions of the cam surface 20a are formed along the circumferential direction. When the movable cam 23 is rotated relative to the fixed cam 20, the fixed cam 20 is pressed toward the side bracket 14 along the lock bolt 17.

  On the opposite side of the fixed cam 20 from the cam surface 20a, the length of the tilt is restricted so that the rotation of the fixed cam 20 is restricted and the fixed cam 20 can move in the vertical direction along the long slot for tilt 14a. A guide protrusion 20b having a width slightly smaller than the width of the hole 14a is integrally formed. That is, the portion of the guide convex portion 20b is slidably accommodated inside the tilt long hole 14a, and when performing tilt adjustment, the guide convex portion 20b extends along the tilt long hole 14a. And move up and down together with the lock bolt 17.

  A pair of resin cylinders 27 a and 27 b are inserted into the lock bolt 17 as elastic cylinders in order to reduce the impact when the inner walls of both ends of the telescopic elongated holes 16 a and 16 b collide with the lock bolt 17. . The pair of resin cylinders 27a and 27b are urged in a direction away from each other between the pair of resin cylinders 27a and 27b, and the end portions of the respective resin cylinders 27a and 27b are connected to the respective telescopic elongated holes. A pressure contact spring 30 is provided as pressure contact urging means held inside 16a and 16b. As shown in FIG. 1, the ends of one resin cylinder 27a are arranged so that the respective resin cylinders 27a, 27b are surely interposed between the inner wall of both ends of the telescopic elongated holes 16a, 16b and the lock bolt 17. The telescopic long hole 16b is inserted into the guide cam 20b, which is the end face of the fixed cam 20, and the other end of the resin tube 27b is inserted into the telescopic long hole 16a. It is in contact with the inner surface of the.

  As shown in FIG. 3, a convex portion 23 b is formed at the axial center position of the movable cam 23 opposite to the cam surface 23 a, and the convex portion 23 b is shaped into a shaft hole 21 a formed in the operation lever 21. Has been. The tip of the lock bolt 17 passes through the position of the shaft hole 21 a of the operation lever 21, and a lock nut 24 is screwed into the lock bolt 17. In order to couple the lock nut 24 to the operation lever 21 and adjust the relative rotational position of the operation lever 21 with respect to the lock nut 24, a lock plate 25 having a hexagonal hole 25a into which the lock nut 24 is fitted is formed. The lock plate 25 is formed with an arc-shaped long hole 25b centered on the hexagonal hole 25a. A bolt 26 inserted through the long hole 25 b is screwed into the screw hole 21 b of the operation lever 21.

  As shown in FIGS. 1 and 3, a support bracket 28 is coupled to the lower surface of the upper portion of the first lower jacket 6c. A hook portion 28a is formed on the right side of the support bracket 28. The hook portion 28a extends obliquely downward toward the front and extends in the lateral direction. A round hole for inserting the lock bolt 17 into the base end portion of the hook portion 28a. 28b is formed. As shown in FIG. 1, the hook part 28a is sandwiched between the side bracket 13 and the distance bracket 16, and between the hook part 13b and the hook part 28a formed on one side bracket 13, A support spring 29 that supports the jacket 6 is provided.

  Next, the operation of the steering column device will be described.

  When the protrusion of the cam surface 23 a of the movable cam 23 is positioned at the high portion of the cam surface 20 a of the fixed cam 20 by rotating the operation lever 21, the movable cam 23 moves the fixed cam 20 to the lock bolt 17. In order to press toward the head 17a side, one side bracket 14 is pressed by the cam mechanism 22. As a result, the pair of side brackets 13 and 14 sandwich the distance bracket 16, the distance bracket 16 is restricted in the axial direction to be in a telescopic lock state, and the distance bracket 16 is restricted in the vertical direction to be in a tilt lock state. .

  On the other hand, when the operation lever 21 is rotated to position the protrusion of the cam surface 23a of the movable cam 23 at the lower portion of the cam surface 20a of the fixed cam 20, the pressing by the cam mechanism 22 is released, and the fixed cam The force which presses 20 toward the head 17a side of the lock bolt 17 is lost. For this reason, the distance bracket 16 is released from the side brackets 13 and 14, whereby the distance bracket 16 can be moved in both the axial direction and the vertical direction, and telescopic adjustment and tilt adjustment are possible. At this time, the urging force of the pressure contact spring 30 acts on the fixed cam 20 via the one resin cylinder 27 a, so that the fixed cam 20 is urged toward the movable cam 23.

  When the telescopic adjustment is performed with the distance bracket 16 opened as described above, the distance bracket 16 is moved in the axial direction between the pair of side brackets 13 and 14 to adjust the steering wheel 4 in the front-rear direction. At this time, since the distance bracket 16 moves in the axial direction, the lock bolt 17 relatively moves in the length direction of the telescopic elongated holes 16a and 16b inside the telescopic elongated holes 16a and 16b.

  On the other hand, when the tilt adjustment is performed with the distance bracket 16 opened as described above, the distance bracket 16 is moved vertically between the pair of side brackets 13 and 14 to adjust the height of the steering wheel 4. . At this time, the lock bolt 17 moves in the vertical direction inside the elongated slots 13a and 14a, and the jacket 6 swings around the bush 11 in FIG.

  According to the present invention, the pair of resin cylinders 27a and 27b are urged toward each other outward by the pressure contact spring 30, and the end of one elastic cylinder 27a passes through the telescopic elongated hole 16b and is fixed to the fixed cam 20. Therefore, the fixed cam 20 is urged toward the movable cam 23 by the pressure contact spring 30 even when the pressing by the cam mechanism 22 is released by releasing the lock and the fixed cam 20 becomes free. As a result, the lock bolt 17 is prevented from being tilted by the weight of the operation lever 21. Therefore, the fixed cam 20 is not inclined with respect to the side bracket 14, and a gap is generated between the fixed cam 20 and the side bracket 14. Therefore, the fixed cam 20 is not caught on the side surface of the side bracket 14 during tilt adjustment, and no abnormal noise such as chatter is generated.

Further, when the distance bracket 16 is moved in the axial direction together with the upper jacket 6a in order to release the lock and perform telescopic adjustment, the telescopic elongated holes 16a and 16b move relative to the lock bolt 17 so as to be telescopic. Even if the inner walls at both ends of the long holes 16a and 16b collide with the lock bolt 17, since the resin cylinders 27a and 27b are interposed between the inner wall and the lock bolt 17, the impact at the time of the collision is reduced. The Even when the fixed cam 20 is no longer pressed by unlocking as described above, the end of one resin cylinder 27a is always in contact with the end surface of the fixed cam 20, and the inner walls of both ends of the long hole are always in contact with each other. It will collide with the lock bolt 17 via the resin cylinders 27a, 27b.
(B) Embodiment 2
Next, the second embodiment will be described with reference to FIGS. In this embodiment, the cam mechanism as the pressing means in the first embodiment is simply changed to a nut member constituting the screw mechanism. Therefore, the same parts as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted. Only the different parts will be described.

  In this embodiment, as the pressing means 18, a lock nut 24 as a nut member is screwed into one end of the lock bolt 17, and a collar 32 is provided between the lock nut 24 and one of the pair of side brackets 14. Is provided. As shown in FIG. 7, a female screw 24 a is formed on the inner peripheral surface of the lock nut 24. The lock nut 24 is provided with an operation lever 21. That is, the operation lever 21 is formed with a shaft hole 21 a for allowing the lock bolt 17 to pass therethrough. The operation lever 21 is interposed between the lock nut 24 and the collar 32 in a state where the lock bolt 17 is passed through the shaft hole 21 a. Is arranged. Further, similarly to the first embodiment, the lock nut 24 and the operation lever 21 are integrally coupled by a lock plate 25 and a bolt 26.

  Since the lock nut 24 is used as the pressing means 18 in this way, when the operation lever 21 is rotated in one direction, the pair of side brackets 14 are tightened via the collar 32 to be locked, and the other direction The pair of side brackets 14 are loosened to the unlocked state by rotating to the right.

  According to the present invention, when the lock is released, the collar 32 is urged toward the lock nut 24 by the pressure contact spring 30 via the resin cylinder 27a. Accordingly, the collar 32 is not caught on the side surface of the side bracket 14 during the tilt adjustment, and abnormal noise such as chatter noise does not occur.

  Other structural actions are the same as those in the first embodiment, and thus the description thereof is omitted.

  In the present embodiment, the case where the pressing means is a cam mechanism and the case of a screw mechanism is shown, but other configurations may be employed. Furthermore, although the resin cylinder is provided as the elastic cylinder, a rubber cylinder or the like may be used.

The block diagram which shows the locked state of a steering column apparatus (Embodiment 1). The block diagram which shows the lock release state of a steering column apparatus (Embodiment 1). 1 is an exploded perspective view of a steering column device (Embodiment 1). FIG. The front view of a steering column apparatus (Embodiment 1). 1 is an overall configuration diagram of a steering column device (Embodiment 1). The block diagram which shows the locked state of a steering column apparatus (Embodiment 2). The disassembled perspective view of the principal part of a steering column apparatus (Embodiment 2).

Explanation of symbols

5a ... Upper shaft 5b ... Lower shaft 6a ... Upper jacket 6b ... Lower jacket 13,14 ... Side brackets 13a, 14a ... Tilt holes 16 ... Distance brackets 16a, 16b ... Telescopic holes 17 ... Lock bolts 18 ... Pressing means DESCRIPTION OF SYMBOLS 20 ... Fixed cam 21 ... Operation lever 22 ... Cam mechanism 23 ... Movable cam 24 ... Lock nut (nut member)
27a, 27b ... Resin cylinder (elastic cylinder)
30 ... Pressure contact spring (pressure contact biasing means)

Claims (3)

A pair of a lower jacket that is coupled to the vehicle body and rotatably supports the lower shaft, an upper jacket that is provided so as to be relatively movable in the axial direction with respect to the lower jacket, and that rotatably supports the upper shaft. Side brackets, and a distance bracket disposed between the pair of side brackets and coupled to the upper jacket,
A telescopic slot formed in the distance bracket along the axial direction, a tilt slot formed in the pair of side brackets along the vertical direction, the tilt slot and the telescopic slot The inserted lock bolt, and one of the pair of side brackets provided at one end of the lock bolt is pressed in the axial direction of the lock bolt, and the distance bracket is sandwiched between the pair of side brackets to hold the upper jacket. A pressing means for locking or unlocking, and an operating lever for operating the pressing means,
In the steering column device in which an elastic cylinder that relaxes an impact when the inner wall of both ends of the telescopic elongated hole collides with the lock bolt is inserted into the lock bolt,
The elastic cylinder is divided, and the pair of elastic cylinders are urged in a direction away from each other between the divided elastic cylinders, and the ends of the respective elastic cylinders are used for the telescopes. An urging means for press contact is provided inside the elongated hole, and one end of the pair of elastic cylinders is passed through the elongated slot for tilting to be in contact with the end surface of the pressing means. Steering column device. In the steering column device according to claim 1,
As the pressing means, there is provided a cam mechanism including a fixed cam inserted through the lock bolt and constrained in rotation, and a movable cam that is inserted into one end of the lock bolt and rotates to push the fixed cam. A steering column device, wherein the movable cam is provided with the operation lever. In the steering column device according to claim 1,
As the pressing means, a nut member screwed into one end of the lock bolt and a collar disposed between the nut member and one of the pair of side brackets are provided, and the operation lever is provided on the nut member. Steering column device characterized by being made.

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