JP2009029224A - Tilt-telescopic steering device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that the assembling of tilt friction plates and telescopic friction plates alternately is complicated. <P>SOLUTION: A main sleeve 10 is provided that has an angularly cylindrical part 10a of a roughly quadrangle shape which are made to pass through both tilt oval holes 5d of the tilt friction plates 5 and telescopic oval holes 6d of the telescopic friction plates 6 superimposed in a roughly cross-shaped state, and a pair of locking parts 10b, 10c which protrude outside in the radial direction from both ends of the angular cylindrical part 10a. Through-holes 5a, 6a are formed at least near lower ends of the tilt friction plates 5 and at least near front ends of the telescopic friction plates 6. Auxiliary sleeves 11 are made to pass through these through-holes to constitute a friction plate unit 9. A pressure member 12 which has a jam cylindrical part 12a which is made to pass through the inside of the angularly cylindrical part 10a and a pressure flange 12b which presses the friction plate unit 9, is provided while making a lock bolt 7 pass therethrough. Support pins 3e, 4e are provided vertically on a side bracket 3 and a distance bracket 4. The auxiliary sleeves 11 are made to pass through the support pins 3e, 4e. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a tilt / telescopic steering device, which improves the workability of assembly work.

  The steering device includes a tilt / telescopic steering device including a tilt mechanism that adjusts the vertical position of the steering wheel according to the physique and posture of the driver, and a telescopic mechanism that adjusts the front and rear position of the steering wheel. Such a tilt mechanism or telescopic mechanism includes a plurality of friction plates so that the steering column does not move upward or forward when the vehicle collides and the driver collides with the steering wheel. Are alternately clamped and clamped firmly.

As a conventional tilt / telescopic steering device using a plurality of friction plates, for example, the one described in Patent Document 1 is known. In this steering apparatus, the friction plate for tilting and the friction plate for telescopic insertion are alternately inserted into the tightening rod to increase the friction resistance between the tightening rod and the side plate and the friction resistance between the column and the tightening rod.
JP 2006-117120 A

  However, in the steering device described in Patent Document 1, when assembling the steering device, the tilt friction plate and the telescopic friction plate are alternately inserted into the tightening rod, and the end of the tilt friction plate is crimped to the side plate. The ends of the telescopic friction plate must be connected to the column via the fastening bolts, and the workability of the assembly work is poor.

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

  In the invention according to claim 1, the lower end of the upper jacket is movably inserted into the upper end of the lower jacket to constitute a jacket, and the telescopic steering shaft is rotatably supported inside the jacket. A pair of side brackets are coupled to the vehicle body, the upper jacket is disposed between the pair of side brackets, a distance bracket is integrally provided on a lower surface of a lower end portion of the upper jacket, and at least one side of the side bracket is provided. , One or two or more and the other two or more of the tilt friction plates and the telescopic friction plates are alternately superposed in a crossing direction so as to be overlapped in a substantially cross shape, and at least the lower side of the tilt friction plate While being connected to the side bracket, at least the front of the telescopic friction plate is at the distance. A lock bolt is connected to the bracket, and a bolt for tilting formed in each of the pair of side brackets and the tilt friction plate, and a telescopic slot formed in each of the distance bracket and the telescopic friction plate. In the steering column device provided with tightening means for tightening the lock bolt, the tilting long hole of the tilting friction plate and the telescopic longing hole of the telescopic friction plate arranged in a substantially cross-shaped manner. There is provided a main sleeve having a substantially quadrangular square tube portion inserted through both sides and a pair of retaining portions projecting radially outward from both ends of the square tube portion, and at least the vicinity of the lower end of the tilt friction plate and the telescopic A pair of through-holes formed at least near the front end of the friction plate, and projecting radially outward from both ends of the cylindrical portion and the cylindrical portion in the through-hole. An auxiliary sleeve having a retaining portion is inserted to constitute a friction plate unit, and a rotation prevention cylinder portion having a substantially rectangular cross section inserted into the rectangular tube portion and a pressing flange portion that presses the friction plate unit. The pressing member is provided by being inserted through the lock bolt, while a support pin is erected on the side bracket and the distance bracket, and the auxiliary sleeve is inserted through the support pin.

  According to the present invention, the friction plate unit is assembled in advance by assembling the tilt friction plate and the telescopic friction plate in a substantially cross-shaped manner and inserting and binding the main sleeve and the auxiliary sleeve, thereby assembling the steering device. In this case, a portion of the auxiliary sleeve mounted on the tilt friction plate of the friction plate unit is inserted into a support pin erected on the side bracket, and the telescopic friction is inserted on the support pin erected on the distance bracket. A portion of the auxiliary sleeve mounted on the plate is inserted, a rotation-preventing cylinder portion of the pressing member is inserted into the main sleeve, a lock bolt is inserted into the pressing member, and a portion of the friction plate unit is inserted. Include. Since both the tilt friction plate and the telescopic friction plate are bundled at two locations in the length direction by the main sleeve and the auxiliary sleeve, the handling is easy even before the friction plate unit is assembled and the workability is good. Further, if the main sleeve is formed of a material such as resin, one retaining portion of the square tube portion of the main sleeve is located inside the tilt long hole, so that the lock bolt extends to the end inside the tilt long hole. When moving and colliding with the side wall of the long slot for tilting, the main sleeve exhibits a buffering function and the hitting sound is eliminated.

  According to a second aspect of the present invention, in the tilt / telescopic steering device according to the first aspect, an escape recess is formed in the pressing flange portion of the pressing member into which one of the retaining portions of the main sleeve enters. And

  According to this invention, when the lock bolt is tightened by the tightening means, the retaining portion of the main sleeve is not compressed between the pressing member and the friction plate unit, and the pressing member directly contacts and presses the friction plate unit. To do. Accordingly, the frictional force between the tilt friction plate and the telescopic friction plate is increased, and tilt sliding that is sliding in the tilt direction and telescopic sliding that is sliding in the telescopic direction do not occur.

  According to a third aspect of the present invention, in the tilt / telescopic steering device according to the first or second aspect, the main sleeve and the auxiliary sleeve form a slit for reducing the diameter along the axial direction on one end side of the cylindrical portion. In addition, the retaining portions are formed at both radial positions sandwiching the diameter-reducing slit on one end side.

  According to the present invention, for example, when the main sleeve is inserted into the tilting long hole of the tilt friction plate and the telescopic long hole of the telescopic friction plate, one end side of the square tube portion of the main sleeve is pressed radially inward. Let them pass through. Then, since the diameter of the rectangular tube portion is reduced, the retaining portion can be moved inward and the main sleeve can be inserted. When the pressing is released, the square tube portion returns to the original position, and the retaining portion functions to prevent the main sleeve from being detached from the tilt long hole and the telescopic long hole. In addition, after inserting the non-rotating cylinder part and support pin into the main sleeve and auxiliary sleeve, it is impossible to reduce the diameter of the square cylinder part and cylinder part, so the tilt friction plate and telescopic friction plate are the main sleeve and auxiliary sleeve. The retaining effect for preventing the slipping out of the container is improved.

  According to the tilt and telescopic steering device according to claim 1, the friction plate unit is configured by superposing and arranging the tilt friction plate and the telescopic friction plate in a substantially cross-shaped manner, and inserting and binding the main sleeve and the auxiliary sleeve. Therefore, when assembling the friction plate unit in advance and assembling the steering device, insert the portion of the auxiliary sleeve attached to the tilt friction plate of the friction plate unit into the support pin erected on the side bracket. A portion of the auxiliary sleeve mounted on the telescopic friction plate is inserted through a support pin standing on the bracket, and a non-rotating tube portion of the pressing member is inserted into the main sleeve, and a lock bolt is inserted into the pressing member. Insert and incorporate parts of the friction plate unit. Since both the tilt friction plate and the telescopic friction plate are bundled at two locations in the length direction by the main sleeve and the auxiliary sleeve, the handling is easy even before the friction plate unit is assembled and the workability is good. Further, if the main sleeve is formed of a material such as resin, one retaining portion of the square tube portion of the main sleeve is located inside the tilt long hole, so that the lock bolt extends to the end inside the tilt long hole. When moving and colliding with the side wall of the long slot for tilting, the main sleeve exhibits a buffering function and the hitting sound is eliminated.

  According to the tilt / telescopic steering device according to claim 2, since the relief recess into which one of the retaining portions of the main sleeve enters the pressing flange portion of the pressing member, when the lock bolt is tightened by the tightening means, the pressing member The retaining portion of the main sleeve is not compressed between the friction plate unit and the friction plate unit, and the pressing member directly contacts and presses the friction plate unit. Accordingly, the frictional force between the tilt friction plate and the telescopic friction plate is increased, and tilt sliding that is sliding in the tilt direction and telescopic sliding that is sliding in the telescopic direction do not occur.

  According to the tilt / telescopic steering device of the third aspect, the main sleeve and the auxiliary sleeve form a diameter-reducing slit along the axial direction on one end side of the cylindrical portion, and the diameter-reducing slit on one end side is formed. Since the retaining portions are formed on both sides of the sandwiched radial direction, for example, when the main sleeve is inserted into the tilt long hole of the tilt friction plate and the telescopic long hole of the telescopic friction plate, the rectangular tube portion of the main sleeve One end side of each is inserted while being pressed radially inward. Then, since the diameter of the rectangular tube portion is reduced, the retaining portion can be moved inward and the main sleeve can be inserted. When the pressing is released, the square tube portion returns to the original position, and the retaining portion functions to prevent the main sleeve from being detached from the tilt long hole and the telescopic long hole. In addition, after inserting the non-rotating cylinder part and support pin into the main sleeve and auxiliary sleeve, it is impossible to reduce the diameter of the square cylinder part and cylinder part, so the tilt friction plate and telescopic friction plate are the main sleeve and auxiliary sleeve. The retaining effect for preventing the slipping out of the container is improved.

Embodiments of a tilt / telescopic steering apparatus according to the present invention will be described below.
(A) Embodiment 1
First, the first embodiment will be described.

  As shown in FIGS. 2 to 4, the jacket 1 is configured such that the lower end of the upper jacket 1 b is movably inserted into the upper end of the lower jacket 1 a so as to cover the upper end of the lower jacket 1 a. An expandable / contractible steering shaft 2 is rotatably supported in the jacket 1. The steering shaft 2 is configured to be extendable and contractable by serration-connecting a lower shaft 2a and a hollow upper shaft 2b.

  A vehicle body side bracket 3 for attaching the jacket 1 is coupled to the vehicle body. The vehicle body side bracket 3 includes an attachment portion 3a attached to the vehicle body and an inverted U-shaped holding portion 3b for holding the upper jacket 1b. A pair of side brackets 3c are formed at both ends of the sandwiching portion 3b.

  The upper jacket 1b is disposed between the pair of side brackets 3c, and both end portions of a substantially U-shaped distance bracket 4 are integrally coupled to the lower surface of the lower end portion of the upper jacket 1b by welding. The pair of side brackets 3c are provided so as to sandwich the distance bracket 4.

  Friction plates are disposed on both sides of the side bracket 3c. That is, the three tilt friction plates 5 and the three telescopic friction plates 6 are superposed alternately in the vertical direction, which is the direction in which the three friction friction plates 6 intersect, and the longitudinal direction of the vehicle body. The telescopic friction plate 6 is inserted into the distance bracket 4 while the lower part of the telescopic friction plate 6 is inserted into the side bracket 3c.

  Tilt long holes 3d and 5d formed in the pair of side brackets 3c and the tilt friction plate 5, respectively, and telescopic long holes 4d formed in the distance bracket 4 and the telescopic friction plate 6 respectively. A lock bolt 7 is inserted through 6d, and tightening means 8 for tightening the lock bolt 7 is provided.

  Since the work of superposing and arranging the three tilt friction plates 5 and the three telescopic friction plates 6 in a substantially cross-shaped manner is complicated, in the present invention, these are assembled in advance as the friction plate unit 9, A steering device is configured by assembling the friction plate unit 9 as one part. The configuration of the friction plate unit 9 will be described below.

  As shown in FIG. 5, a substantially rectangular square tube that is inserted through both of the tilting long hole 5 d of the tilt friction plate 5 and the telescopic long plate 6 d of the telescopic friction plate 6 arranged in a substantially cross-shaped manner. A resin main sleeve 10 having a portion 10a and a pair of retaining portions 10b, 10c projecting radially outward from both ends of the rectangular tube portion 10a is provided. The retaining portion 10b has a flange-shaped portion that protrudes outward in the radial direction. On the other hand, the retaining portion 10c is configured as follows in order to allow the main sleeve 10 to be inserted into the long slot for tilt 5d and the long hole for telescopic 6d. A pair of diameter-reducing slits 10d are formed on one end side of the rectangular tube portion 10a along the axial direction, and the insertion side is formed with a tapered surface at both radial positions sandwiching the diameter-reducing slit 10d on one end side. Further, the retaining portion 10c is formed to protrude.

As shown in FIG. 1, through holes 5a and 6a are formed in the vicinity of the lower end of the tilt friction plate 5 and in the vicinity of the front end of the telescopic friction plate 6, respectively, and a resin-made auxiliary sleeve 11 is inserted into the through holes 5a and 6a. ing. In the present embodiment, a through hole 5a is also formed near the upper end of the tilt friction plate 5, and a cylindrical auxiliary sleeve 11 is inserted into the through hole 5a. As shown in the perspective view of FIG. 1 and the cross-sectional view of FIG. 4, the auxiliary sleeve 11 includes a cylindrical portion 11a and a pair of retaining portions 11b and 11c protruding radially outward from both ends of the cylindrical portion 11a. Composed. The retaining portion 11b is formed in a flange-shaped portion that protrudes radially outward, and the retaining portion 11c is inserted in the through hole 5a or the through hole 6a in a radial direction at a position orthogonal to the pair of reduced diameter slits 11d. A portion protruding outward is formed, and a tapered surface for facilitating insertion is formed on the end surface on the side to be inserted first during insertion. Thus, the tilt friction plate 5 and the telescopic friction plate 6 are bound together by the main sleeve 10 and the three auxiliary sleeves 11 to constitute the friction plate unit 9. The friction plate units 9 are provided on both sides of the left and right side brackets 3c, respectively.

  A pressing member 12 is inserted into the main sleeve 10 constituting each of the friction plate units 9. In FIG. 1, the right pressing member 12 is a single product, and the left pressing member 12 is integrally formed with a fixed cam 13a. The single article pressing member 12 will be described. As shown in FIGS. 4 to 6, the pressing member 12 includes a non-rotating cylinder portion 12 a having a substantially square cross section inserted into the rectangular tube portion 10 a of the main sleeve 10 and a pressing flange portion 12 b that presses the friction plate unit 9. And have. The pressing member 12 is provided by being inserted through the lock bolt 7. On the surface of the pressing flange portion 12b facing the one retaining portion 10b of the main sleeve 10, an escape recess 12c into which the retaining portion 10b enters is provided in the direction of the elongated slots 3d and 5d and the telescopic elongated holes 4d, It is formed at four locations with the 6d direction. Since the pressing member 12 formed integrally with the fixed cam 13a has the same configuration, the description thereof is omitted.

  On the other hand, support pins 3e and 4e are erected on the side bracket 3c and the distance bracket 4, and the auxiliary sleeve 11 is inserted into the support pins 3e and 4e, respectively. Note that the auxiliary sleeve 11 provided in the vicinity of the upper end of the tilt friction plate 5 is not supported by the support pins, and merely binds the tilt friction plates 5 together.

  The configuration of the fastening means 8 will be described. A cam mechanism 13 including a fixed cam 13a and a movable cam 13b is inserted through the head of the lock bolt 7. As shown in FIG. 1, the fixed cam 13a is integrally formed with the pressing member 12, and a surface facing the movable cam 13b is formed with a high portion, a bottom portion, and a tapered portion connecting them. On the other hand, the movable cam 13b is formed with a protruding portion that presses the high portion, the bottom portion, and the tapered portion on the surface facing the fixed cam 13a. A shaft portion projects from the opposite surface of the movable cam 13 b, and the shaft portion is deformed into a hole formed in the base end portion of the operation lever 14.

  When the operation lever 14 is rotated and the movable cam 13b is rotated, the outer peripheral surface of the lower jacket 1a is pressed upward, and the upper surface of the lower jacket 1a is pressed to the inner peripheral surface of the upper jacket 1b. In order to hold back between the two, the following configuration is adopted.

  In order to rotate the lock bolt 7 integrally with the operation lever 14, a circular hole 15a is formed at one end of the lock plate 15, and a serration is formed on the inner peripheral surface of the circular hole 15a. The circular hole 15a is fitted with a head 7a of a lock bolt 7 on which serrations are formed, and a hole 15b is formed on the other end of the lock plate 15. Then, the bolt 16 inserted through the hole 15 b is screwed into a screw hole 14 a formed in the vicinity of the base end portion of the operation lever 14.

  Further, the cylinder 17 is inserted into the lock bolt 7 in the distance bracket 4, and the inner periphery of the cylinder 17 and the lock bolt 7 are rotated so that the cylinder 17 rotates integrally with the lock bolt 7. Serrations 7b and 17b are formed on the outer peripheral surface.

  As shown in FIGS. 1 and 4, an arc-shaped protrusion 17a is formed on the outer peripheral surface of the cylindrical body 17 to press the lower jacket 1a, and an insertion hole 1c for inserting the protrusion 17a is formed. Is formed on the lower surface of the lower end portion of the upper jacket 1b.

  On the other hand, a nut 19 is screwed into the distal end portion of the lock bolt 7 via a collar 18, and the nut 19 is fixed by caulking. A thrust bearing 20 is provided between the collar 18 and the pressing flange portion 12 b of the pressing member 12.

  Reference numeral 22 in the figure denotes a holding spring, which is provided to hold the jacket 1 so that it does not fall under its own weight when the operating lever 14 is rotated to loosen the lock bolt 7.

  Next, the operation of the tilt / telescopic steering device will be described.

  When tilt adjustment or telescopic adjustment is performed, the operation lever 14 is rotated and the movable cam 13b is rotated. Then, the protruding portion of the movable cam 13b moves from the high portion of the fixed cam 13a to the low portion via the tapered portion, and the fixed cam 13a approaches the movable cam 13b. Therefore, the lock bolt 7 is loosened, and the lock bolt 7 can be moved along the elongated tilt holes 3d and 5d in FIG. At this time, the tilt friction plate 5 slightly swings around the support pin 3e. Further, by moving the distance bracket 4 relative to the lock bolt 7 along the axial direction, the upper jacket 1b can be moved along the axial direction for telescopic adjustment. At this time, the telescopic friction plate 6 moves along the axial direction. When the tilt adjustment and telescopic adjustment are completed, the operation lever 14 is rotated in the opposite direction to the above, and the lock bolt 7 is tightened. At this time, the cylindrical body 17 is rotated together with the lock bolt 7, and the projecting portion 17a formed in the cylindrical body 17 presses the upper lower jacket 1a from the insertion hole 1c of the upper jacket 1b, and the upper surface of the lower jacket 1a is It is pressed against the inner peripheral surface of the upper jacket 1b and serves as a backlash presser between the two. Since the tilt friction plate 5 and the telescopic friction plate 6 are superposed in a substantially cross-shaped manner, the number of friction plates in frictional contact is large. Therefore, even when the driver has a secondary collision with a steering wheel not shown, the frictional resistance is large. There is no risk of tilt sliding or telescopic sliding.

  According to the present invention, the friction plate unit 9 is assembled in advance by superposing the tilt friction plate 5 and the telescopic friction plate 6 in a substantially cross-shaped manner and inserting and binding the main sleeve 10 and the auxiliary sleeve 11. When assembling the steering device, the portion of the auxiliary sleeve 11 mounted on the tilt friction plate 5 of the friction plate unit 9 is inserted into the support pin 3e provided upright on the side bracket 3c, and the stand bracket 4 is installed upright. The portion of the auxiliary sleeve 11 mounted on the telescopic friction plate 6 is inserted into the support pin 4e, and the rotation-preventing cylinder portion 12a of the pressing member 12 is inserted into the main sleeve 10 to lock the pressing member 12 inside. The bolt 7 is inserted, and the friction plate unit 9 is assembled. Since both the tilt friction plate 5 and the telescopic friction plate 6 are bundled at two locations in the length direction by the main sleeve 10 and the auxiliary sleeve 11, it is easy to handle both before and after the friction plate unit 9 is assembled. Good sex. Further, since the main sleeve 10 is formed of resin, one retaining portion 10c of the rectangular tube portion 10a in the main sleeve 10 is positioned inside the tilt long hole 3d, and the lock bolt 7 is placed inside the tilt long hole 3d. When the sleeve moves to the end and collides with the side wall of the tilting long hole 3d, the main sleeve 10 exhibits a buffering function and the hitting sound is eliminated.

  According to the present invention, when the lock bolt 7 is tightened by the cam mechanism 13, the retaining portion 10b of the main sleeve 10 is not compressed between the pressing member 12 and the friction plate unit 9 as shown in FIG. The member 12 directly contacts and presses the friction plate unit 9. Accordingly, the frictional force between the tilt friction plate 5 and the telescopic friction plate 6 is increased, and tilt sliding that is sliding in the tilt direction and telescopic sliding that is sliding in the telescopic direction do not occur.

  According to the present invention, for example, when the main sleeve 10 is inserted into the tilt long hole 5d of the tilt friction plate 5 and the telescopic long hole 6d of the telescopic friction plate 6, one end side of the rectangular tube portion 10a of the main sleeve 10 is provided. Is inserted while pressing inward in the radial direction. Then, since the diameter of the rectangular tube portion 10a is reduced, the retaining portion 10c can move inward and the main sleeve 10 can be inserted. When the pressing is released, the rectangular tube portion 10a returns to the original position, and the retaining portion 10c functions to prevent the main sleeve 10 from being detached from the tilting long hole 5d and the telescopic long hole 6d. In addition, after inserting the non-rotating cylindrical portion 12a and the support pins 3e and 4e into the main sleeve 10 and the auxiliary sleeve 11, it is impossible to reduce the diameter of the rectangular cylindrical portion 10a and the cylindrical portion 11a. The retaining effect for preventing the telescopic friction plate 6 from coming off the main sleeve 10 and the auxiliary sleeve 11 is improved.

Although three each of the tilt friction plates 5 and the telescopic friction plates 6 are provided as shown in FIG. 6, another telescopic friction plate 6 is added outside the tilt friction plate 5 as shown in FIG. It is also possible to combine 3 and 4 sheets. This increases the frictional resistance.
(B) Embodiment 2
Next, a second embodiment will be described. Since this embodiment is obtained by changing a part of the first embodiment, the description of the same part is omitted, and only a different part will be described.

  A drawing corresponding to FIG. 6 is shown in FIG. In the first embodiment, there are three tilt friction plates 5 and telescopic friction plates 6, but in this embodiment there is only one tilt friction plate 5 and the other two are provided. A flat washer 21 is used for the part.

In this case, when a load acts in the tilt direction, the telescopic friction plates 6 on both sides of the fixed tilt friction plate 5 move upward. Accordingly, the frictional resistance is generated at two places on both sides of the tilted friction plate 5, and the frictional resistance is smaller than that in the first embodiment. On the other hand, when a load acts in the telescopic direction, it is the one tilt friction plate 5 and the two flat washers 21 that move in the axial direction with respect to the three telescopic friction plates 6 fixed. Since the washer 21 functions in the same manner as the tilt friction plate 5, it functions in the same manner as when three tilt friction plates 5 and three telescopic friction plates 6 are provided.
(C) Embodiment 3
Next, Embodiment 3 will be described. Since this embodiment is also obtained by changing a part of the first embodiment, the description of the same part is omitted, and only a different part will be described.

  A drawing corresponding to FIG. 5 is shown in FIG. In the first embodiment, the retaining portion 10b of the main sleeve 10 has a portion protruding outward in the radial direction approximately every 90 degrees. However, in this embodiment, there are two upwards and two downwards. It is provided, not to the side. For this reason, the escape recessed part 12c which is provided in the press flange part 12b of the press member 12 and into which the retaining part 10b is inserted is only vertically.

  In this embodiment, the friction plate units are provided on both sides of the side bracket, but may be provided only on one side. Also, the case of using three friction plates for tilt and three friction plates for telescopic use, and the case of using one friction plate for tilting and three friction plates for telescopic use are shown. As for a board, one should be 1 or 2 and the other should just be 2 or more. Furthermore, although the cam mechanism is employed as the fastening means, the present invention is not limited to such a configuration, and a screw mechanism may be employed, or both the cam mechanism and the screw mechanism may be employed, and various configurations are conceivable. Furthermore, although the auxiliary sleeve is provided above and below the tilting friction plate, it is sufficient that the auxiliary sleeve is provided at least in the lower part.

FIG. 3 is an exploded perspective view of the tilt / telescopic steering device (embodiment). 1 is a front view of a tilt / telescopic steering device (Embodiment 1). FIG. 1 is a plan view of a tilt / telescopic steering device (Embodiment 1). FIG. An axial sectional view of a tilt and telescopic steering device (Embodiment 1). FIG. 3 is a perspective view of a main part of the tilt / telescopic steering device (Embodiment 1). Sectional drawing of the principal part of a tilt and telescopic steering device (Embodiment 1). Sectional drawing of the principal part of a tilt and telescopic steering device (Embodiment 2). The principal part perspective view of a tilt and telescopic steering device (Embodiment 3). Cross-sectional view of the main part of the tilt / telescopic steering device (Embodiment 4)

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Jacket 1a ... Lower jacket 1b ... Upper jacket 2 ... Steering shaft 3c ... Side bracket 3d, 5d ... Tilt long hole 3e, 4e ... Support pin 4 ... Distance bracket 4d, 6d ... Telescopic long hole 5 ... Tilt friction plate 6 ... Telescopic friction plate 7 ... Lock bolt 8 ... Tightening means 9 ... Friction plate unit 10 ... Main sleeve 10a ... Square tube portion 10b ... Retaining portion 10d ... Diameter reducing slit 11 ... Auxiliary sleeve 11a ... Tube portion 11b ... Retaining device Part 12: Pressing member 12a: Non-rotating cylindrical part 12b ... Pressing flange part 12c ... Relief recess 13 ... Cam mechanism

Claims (3)

A lower end portion of the upper jacket is movably inserted into an upper end portion of the lower jacket to constitute a jacket, and an extendable steering shaft is rotatably supported inside the jacket,
A pair of side brackets are coupled to the vehicle body, the upper jacket is disposed between the pair of side brackets, a distance bracket is integrally provided on a lower surface of a lower end portion of the upper jacket, and at least one side of the side bracket is provided. , One or two or more and the other two or more of the tilt friction plates and the telescopic friction plates are alternately superposed in a crossing direction so as to be overlapped in a substantially cross shape, and at least the lower side of the tilt friction plate While coupled to the side bracket, at least the front of the telescopic friction plate is coupled to the distance bracket,
A lock bolt is inserted through the long slot for tilt formed in each of the pair of side brackets and the tilt friction plate, and the long telescopic hole formed in each of the distance bracket and the telescopic friction plate, In the steering column device provided with tightening means for tightening the lock bolt,
From the both ends of the substantially square-shaped square tube part inserted through both the elongated slot for tilting of the tilted friction plate and the telescopic elongated hole of the telescopic friction plate arranged in a substantially cross-shaped manner. A main sleeve having a pair of retaining portions protruding radially outward is provided, a through hole is formed at least near the lower end of the tilt friction plate and at least near the front end of the telescopic friction plate, and a cylindrical portion is formed in the through hole. And an auxiliary sleeve having a pair of retaining portions protruding radially outward from both ends of the cylindrical portion to constitute a friction plate unit,
A pressing member having a rotation prevention cylinder part having a substantially square cross section inserted into the rectangular cylinder part and a pressing flange part pressing the friction plate unit is provided by being inserted through the lock bolt, while the side bracket and the A tilt / telescopic steering apparatus, wherein a support pin is erected on a distance bracket, and the auxiliary sleeve is inserted through the support pin. The tilt / telescopic steering device according to claim 1,
A tilt / telescopic steering device, wherein a relief recess into which one of the retaining portions of the main sleeve enters is formed in the pressing flange portion of the pressing member. The tilt / telescopic steering device according to claim 1 or 2,
The main sleeve and the auxiliary sleeve form a diameter-reducing slit on one end side of the cylindrical portion along the axial direction, and the retaining portion is located at both radial positions sandwiching the diameter-reducing slit on one end side. A tilt and telescopic steering device characterized by forming

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