JP2013018471A - Steering device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a steering device with reduced vehicle-lateral dimension and reduced number of parts, configured to prevent a column from moving in telescopic and tilt directions upon a secondary collision, while facilitating design of an impact absorbing mechanism.SOLUTION: Upon a vehicle collision, first rockable friction plates 5, 5 are compressed and bent between a pin 51 and a clamping rod 4, to increase a clamping axial force of a clamping rod 4, thereby increasing a clamping force for clamping a distance bracket 13 to a body attachment bracket 3. An outer column 11 does not start moving forward from the bracket 3 against the clamping force, due to a forward impact load upon a secondary collision. The body attachment bracket 3 is smoothly detached from the body by a predetermined collapse load, thereby stabilizing impact absorbing performance.

Description

  The present invention relates to a steering device, and more particularly, to a tilt / telescopic steering device capable of adjusting a tilt position and a telescopic position of a steering wheel in accordance with a driver's physique and driving posture.

  There is a steering device called a tilt / telescopic steering device as a device for adjusting both the vertical position and the front / rear position of the steering wheel in accordance with the physique and driving posture of the driver. In such a steering device, after the adjustment of the tilt position and the telescopic position is completed, the operation lever is operated, the side plate of the vehicle body mounting bracket is tightened to the column by the tightening rod, and the column is tilted with respect to the vehicle body mounting bracket. And it is clamped so that it cannot move telescopically. In addition, the vehicle body mounting bracket is detached from the vehicle body when the predetermined impact load is applied, and moves in a collapsed manner toward the front side of the vehicle body, thereby reducing the impact load applied to the driver.

  In such a steering device, when the tightening force of the tightening rod is loose, the column moves in the telescopic direction and the tilt direction at the time of the secondary collision in which the driver collides with the steering wheel, and the vehicle body mounting bracket is Since the collapse load that separates from the surface changes, it may be difficult to design the shock absorbing mechanism.

  Therefore, the clamping device that clamps the column to the body mounting bracket requires that the steering device has high rigidity at the time of clamping, that the clamping force is stable, and that the unclamping operation is easy. In some cases, a structure (Patent Document 1) is employed in which a column is fastened and clamped to a side plate of a vehicle body mounting bracket.

  As described in Patent Document 1, the clamp device using such a friction plate fixes a friction plate for tilt that is long in the tilt position adjustment direction to the body mounting bracket side, and is long for telescopic position adjustment. The friction plate is fixed to the column side, and a washer is interposed between the friction plates to increase the number of friction surfaces and increase the friction force. Therefore, the washer interposed between the friction plates increases the size and the number of parts of the steering device in the vehicle width direction, and increases the weight of the steering device.

  In addition, since the conventional long groove for tilt adjustment is formed in an arc shape centering on a pivot pin that serves as a fulcrum for pivoting the column, an impact load on the front side of the vehicle body is applied to the steering wheel at the time of a secondary collision. If this occurs, the column may move upward along the tilt adjusting long groove, and the airbag may not be able to effectively receive the driver. Further, since the impact load to the front side of the vehicle body does not act smoothly at the time of the secondary collision, the vehicle body mounting bracket may not be smoothly detached from the vehicle body, and the shock absorption performance may not be stable.

  As a steering apparatus for preventing the column from moving upward in the tilt at the time of such a secondary collision, there is a steering apparatus disclosed in Patent Document 2. The long groove for tilt adjustment of the steering device of Patent Document 2 is formed so as to be inclined with respect to a plane perpendicular to the central axis of the column by an angle larger than the inclination angle of the central axis of the column with respect to the longitudinal direction of the vehicle body. It is formed longer in the direction away from the central axis of the column as it goes forward, and prevents the column from moving upward on the tilt. However, the steering device of Patent Document 2 is not applied to a steering device that clamps a column by clamping a column to a side plate of a vehicle body mounting bracket via a friction plate.

JP 10-35511 A JP 2010-52639 A

  It is an object of the present invention to provide a steering device that has a small vehicle width direction and a small number of parts, that makes it difficult for a column to move in a telescopic direction and a tilt direction during a secondary collision, and that can easily design an impact absorbing mechanism. .

  The above problem is solved by the following means. That is, the first invention is a vehicle body mounting bracket that can be mounted on a vehicle body, and the vehicle body mounting bracket is supported so that the telescopic position can be adjusted, and a steering shaft equipped with a steering wheel is pivotally supported. A column, a telescopic adjustment long groove formed in the column in the telescopic position adjustment direction, a through-hole formed in a side plate of the vehicle body mounting bracket, and disposed on the outside of the column. A first rocking friction plate supported so as to be rockable by the first telescopic friction plate, inserted into the telescopic adjustment long groove and the through-hole for clamping the column to the vehicle body mounting bracket at a desired telescopic position; A tightening rod for tightening the column to the vehicle body mounting bracket via the oscillating friction plate, the first Is formed on the oscillating friction plate, a steering device, characterized in that the clamping rod is provided with a first longitudinal groove is inserted.

  According to a second aspect, in the steering apparatus according to the first aspect, the first long groove is formed long along a straight line connecting the first swing support portion and the tightening rod. It is a steering device.

  According to a third aspect of the present invention, in the steering device of the second aspect, the first long groove is formed on the first rocking friction plate so that the first long groove is easily plastically deformed at the time of a secondary collision. A third long groove having substantially the same length as the first long groove is formed along the steering wheel.

  A fourth invention is a steering device according to the third invention, wherein the first long groove and the third long groove are formed in an arc shape.

  A fifth invention is a steering device according to the third invention, wherein a notch is formed at an end of the first long groove.

  According to a sixth aspect, in the steering apparatus according to the first aspect, the first long groove is formed to be inclined with respect to a straight line connecting the first swing support portion and the tightening rod. Is a steering device.

  A seventh invention is the steering device of the second invention, wherein the steering device is supported on the side plate of the vehicle body mounting bracket so as to be swingable by a second swing support portion, and is fastened to the vehicle body mounting bracket by the tightening rod. A second long groove formed in the second rocking friction plate and the second rocking friction plate, formed long along a straight line connecting the second rocking support portion and the tightening rod, and through which the tightening rod is inserted. A steering apparatus including the steering apparatus.

  According to an eighth aspect of the present invention, in the steering apparatus according to the seventh aspect, the first long groove is formed on the first rocking friction plate so that the first long groove is easily plastically deformed at the time of a secondary collision. A third long groove having substantially the same length as that of the first long groove is formed along the second rocking friction plate so that the second long groove is easily deformed plastically during a secondary collision. A steering device is characterized in that a fourth long groove having substantially the same length as the second long groove is formed along the second long groove.

  According to a ninth aspect, in the steering device according to the eighth aspect, the first long groove, the third long groove, the second long groove, and the fourth long groove are formed in an arc shape. It is a steering device.

  A tenth aspect of the present invention is the steering apparatus according to the eighth aspect of the present invention, wherein notches are formed at ends of the first long groove and the second long groove.

  An eleventh aspect of the present invention is a vehicle body mounting bracket that can be mounted on a vehicle body, a column that is pivotally supported by the vehicle body mounting bracket and that has a tilt position that can be adjusted and a steering shaft on which a steering wheel is mounted. A second swing on the through hole formed in the column, the long groove for tilt adjustment formed in the side plate of the vehicle body mounting bracket, the inner surface of the side plate of the vehicle body mounting bracket, or the outer surface of the side plate of the vehicle body mounting bracket A second oscillating friction plate supported swayably by a support portion; inserted into the through hole and the tilt adjusting long groove to clamp the column to the vehicle body mounting bracket at a desired tilt position; A tightening rod for tightening the column to the vehicle body mounting bracket via the two oscillating friction plates and the second oscillating friction plate. It is a steering device characterized by comprising a second long groove which the clamping rod is inserted.

  According to a twelfth aspect of the invention, in the steering apparatus according to the eleventh aspect of the invention, the second long groove is formed long along a straight line connecting the second swing support portion and the tightening rod. It is a steering device.

  In a thirteenth aspect of the steering device according to the twelfth aspect of the present invention, the second long groove is formed on the second rocking friction plate so that the second long groove is easily plastically deformed at the time of a secondary collision. Is a fourth long groove having substantially the same length as the second long groove.

  A fourteenth aspect of the invention is the steering apparatus according to the thirteenth aspect of the invention, wherein the second long groove and the fourth long groove are formed in an arc shape.

  A fifteenth aspect of the present invention is the steering apparatus according to the thirteenth aspect of the present invention, wherein a notch is formed at an end of the second long groove.

  According to a sixteenth aspect, in the steering apparatus according to the eleventh aspect, the second long groove is formed to be inclined with respect to a straight line connecting the second swing support portion and the tightening rod. Is a steering device.

  A seventeenth aspect of the invention is the steering device according to any one of the first to sixteenth aspects, wherein the tilt adjusting long groove is a plane orthogonal to a straight line connecting the pivot center of the column and the center of the clamping rod. In contrast, the steering apparatus is characterized by being inclined toward the rear side of the vehicle body.

  In the steering apparatus of the present invention, the first swing friction plate disposed outside the column and supported by the column so as to be swingable by the first swing support portion, and the column mounted on the vehicle body mounting bracket at a desired telescopic position. Are clamped to the body mounting bracket through the first swing friction plate and the first swing friction plate. The tightening rod is inserted into the telescopic adjustment long groove and the through hole. A first long groove to be inserted is provided.

  Therefore, when the vehicle body collides and the driver collides with the steering wheel, since there is the first swing friction plate, the friction surface that slides at the time of the collision increases, the clamping force increases, and the first swing friction plate is the first swing friction plate. Therefore, the tightening axial force of the tightening rod increases and the clamping force of the vehicle body mounting bracket tightening the column increases. As a result, the vehicle body mounting bracket is smoothly detached from the vehicle body with a predetermined collapse load, so that the shock absorbing performance is stabilized. Further, since it is not necessary to interpose a washer between the first swing friction plate and the vehicle body mounting bracket, the size and the number of parts of the steering device in the vehicle width direction can be reduced, and an increase in the weight of the steering device can be suppressed.

  In addition, since the tilt adjustment long groove is formed to be inclined to the rear side of the vehicle body, even if an impact force directed to the upper side of the vehicle body is input to the column, the collapse load in the column axial direction to the front side of the vehicle body that acts simultaneously On the other hand, the column has to be retracted to the rear side of the vehicle body in the column axial direction, the column can be prevented from moving upward, and the air bag can effectively catch the driver.

1 is an overall perspective view showing a state in which a steering device according to an embodiment of the present invention is attached to a vehicle. It is a front view of the principal part which shows the steering device of Example 1 of this invention. (A) is an enlarged front view of the vicinity of the vehicle body mounting bracket of FIG. 2, and (b) is a cross-sectional view taken along the line AA of (a). It is BB sectional drawing of FIG. It is an enlarged front view which shows the state which moved the outer column to the vehicle body front side moving end of a telescopic direction, and is an enlarged front view which abbreviate | omitted the vehicle body attachment bracket. It is an enlarged front view which shows the state which moved the outer column to the vehicle body rear side movement end of a telescopic direction, and is an enlarged front view which abbreviate | omitted the vehicle body attachment bracket. FIG. 6 is an enlarged front view showing the vicinity of a vehicle body mounting bracket of a steering device according to a second embodiment of the present invention, and showing an outer column moved to a vehicle body lower side movement end in a tilt direction. It is CC sectional drawing of FIG. It is an enlarged front view which shows the state which moved the outer column to the vehicle body upper side movement end of the tilt direction. It is sectional drawing which shows the steering apparatus of Example 3 of this invention, and is FIG. 8 equivalent figure of Example 2. FIG. It is a front view of the principal part which shows the steering device of Example 4 of this invention. FIG. 12 is an enlarged front view of the vicinity of the vehicle body mounting bracket of FIG. 11. It is DD sectional drawing of FIG. It is a front view of the principal part which shows the steering apparatus of Example 5 of this invention. It is an enlarged front view of the vicinity of the vehicle body mounting bracket of the steering device according to the sixth embodiment of the present invention. FIG. 16 is an enlarged front view showing a state in which the outer column is moved to the vehicle body front side moving end in the telescopic direction in FIG. 15, and is an enlarged front view in which the vehicle body mounting bracket is omitted. FIG. 16 is an enlarged front view showing a state in which the outer column is moved to the vehicle body rear side moving end in the telescopic direction in FIG. 15, and is an enlarged front view in which the vehicle body mounting bracket is omitted. FIG. 16 is an enlarged front view showing a state in which the outer column is moved to an intermediate position in the telescopic direction in FIG. FIG. 6 is an enlarged front view showing a state in which the outer column has a secondary collision at an intermediate position in the telescopic direction and the first long groove is plastically deformed, and is an enlarged front view in which a vehicle body mounting bracket is omitted. FIG. 10 is an enlarged front view of the vicinity of a vehicle body mounting bracket of a steering device according to a seventh embodiment of the present invention, and shows an enlarged front view showing a state in which an outer column is moved to a vehicle body lower side moving end in a tilt direction. FIG. 21 is an enlarged front view showing a state in which the outer column is moved to the vehicle body upper side movement end in the tilt direction in FIG. 20. It is an enlarged front view which shows the state which carried out the secondary collision and the 2nd long groove plastically deformed in the state which moved the outer column to the intermediate position of the tilt direction in Example 7 of this invention. It is a front view of the principal part which shows the steering apparatus of Example 8 of this invention. It is an enlarged front view which shows the state which moved the outer column to the intermediate position of the telescopic direction in Example 9 of this invention, and is the enlarged front view which abbreviate | omitted the vehicle body attachment bracket. FIG. 25 is an enlarged front view showing a state in which the outer column is moved to the rear end of the vehicle body in the telescopic direction in FIG. 24, and is an enlarged front view in which the vehicle body mounting bracket is omitted. It is a front view of the principal part which shows the steering apparatus of Example 10 of this invention. FIG. 15 is an enlarged front view showing the vicinity of a vehicle body mounting bracket of a steering device according to an eleventh embodiment of the present invention, and showing an outer column moved to a vehicle body lower side moving end in a tilt direction. It is an enlarged front view which shows the state which moved the outer column to the intermediate position of the tilt direction in FIG. It is an enlarged front view which shows the state which moved the outer column to the vehicle body front side moving end of the telescopic direction in the steering apparatus of Example 12 of this invention, and is the enlarged front view which abbreviate | omitted the vehicle body attachment bracket. It is an enlarged front view which shows the state which moved the outer column to the intermediate position of a telescopic direction in FIG.

    Embodiments 1 to 12 of the present invention will be described below with reference to the drawings.

  FIG. 1 is an overall perspective view showing a state in which a steering device of the present invention is attached to a vehicle. As shown in FIG. 1, a hollow cylindrical column 101 is attached to a vehicle body, and a steering shaft 103 is pivotally supported on the column 101 so as to be rotatable. A steering wheel 102 is attached to the steering shaft 103 at the right end (rear side of the vehicle body), and an intermediate shaft 105 is connected to the left end (front side of the vehicle body) of the steering shaft 103 via a universal joint 104.

  The intermediate shaft 105 includes a solid intermediate inner shaft 105a in which a male spline is formed and a hollow cylindrical intermediate outer shaft 105b in which a female spline is formed. The male spline of the intermediate inner shaft 105a is connected to the intermediate outer shaft. It is fitted to the female spline 105b so as to be extendable (slidable) and capable of transmitting rotational torque.

  Furthermore, the vehicle body rear side of the intermediate outer shaft 105 b is connected to the universal joint 104, and the vehicle body front side of the intermediate inner shaft 105 a is connected to the universal joint 106. A pinion that meshes with a rack (not shown) of the steering gear 107 is connected to the universal joint 106.

  When the driver rotates the steering wheel 102, the rotational force is transmitted to the steering gear 107 through the steering shaft 103, the universal joint 104, the intermediate shaft 105, and the universal joint 106, and the tie rod is transmitted through the rack and pinion mechanism. 108 can be moved to change the steering angle of the steering wheel 109.

  2 is a front view of an essential part showing the steering apparatus according to the first embodiment of the present invention, FIG. 3A is an enlarged front view in the vicinity of the vehicle body mounting bracket in FIG. 2, and FIG. 3B is a view in FIG. It is AA sectional drawing. 4 is a cross-sectional view taken along line BB in FIG. FIG. 5 is an enlarged front view showing a state in which the outer column is moved to the vehicle body front side moving end in the telescopic direction, and is an enlarged front view in which the vehicle body mounting bracket is omitted. FIG. 6 is an enlarged front view showing a state in which the outer column has been moved to the vehicle body rear side moving end in the telescopic direction, and is an enlarged front view in which the vehicle body mounting bracket is omitted.

  As shown in FIGS. 2 to 6, an outer column 11 is fitted on the outer periphery of the inner column 10 disposed on the front side of the vehicle body so as to be slidable in the axial direction. An upper steering shaft 103A is rotatably supported on the outer column 11, and a steering wheel 102 in FIG. 1 is fixed to the right end (rear side of the vehicle body) of the upper steering shaft 103A. In the embodiment of the present invention, the outer column 11 is an integrally molded product made of aluminum die casting, but may be a steel pipe welded with a distance bracket. Further, for the purpose of weight reduction, it may be made of magnesium die casting.

  On the left side (front side of the vehicle body) of the outer column 11, the vehicle body mounting bracket 3 is attached 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 (not shown) made of aluminum alloy or the like fixed to the vehicle body (not shown).

  When a driver collides with the steering wheel 102 during a secondary collision and a large impact force is applied, the vehicle body mounting bracket 3 is detached from the capsule toward the front side of the vehicle body, and the outer column 11 is guided by the inner column 10 to the front side of the vehicle body. Moves to collapse and absorbs impact energy.

  A lower bracket 21 is integrally fixed to the vehicle body front side (left side) of the inner column 10. The lower bracket 21 is supported on the vehicle body via a pivot pin 22 so as to be tiltable. A lower steering shaft 103B is rotatably supported on the inner column 10, and the vehicle body rear side of the lower steering shaft 103B is spline-engaged with the vehicle body front side of the upper steering shaft 103A. The lower steering shaft 103B is connected to the steering gear 107 via the intermediate shaft 105, and can change the steering angle of the wheel.

  As shown in FIGS. 3 and 4, 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 distance bracket 13 is integrally formed on the outer column 11 so as to protrude below the outer column 11. The side surfaces 14 and 15 of the distance bracket 13 are slidably in contact with the inner side surfaces 331 and 341 of the side plates 33 and 34 of the vehicle body mounting bracket 3. As shown in FIG. 4, the outer column 11 is formed with a slit 12 communicating with the inner peripheral surface 111 of the outer column 11.

  Tilt adjusting long grooves 35 and 36 are formed in the side plates 33 and 34 of the vehicle body mounting bracket 3. The tilt adjusting long grooves 35 and 36 are formed in an arc shape centered on the pivot pin 22. A round hole (through hole) may be formed instead of the tilt adjusting long grooves 35 and 36, and the present invention may be applied to a steering device that can only adjust the telescopic direction.

  The distance bracket 13 is formed with telescopic adjustment long grooves 16 and 17 extending parallel to the central axis 112 of the outer column 11 on the lower side of the vehicle body than the central axis 112 of the outer column 11. The round rod-shaped fastening rod 4 is inserted from the left side of FIG. 4 through the long grooves 35 and 36 for tilt adjustment and the long grooves 16 and 17 for telescopic adjustment.

  On the outer peripheral surface 113 of the outer column 11, the first swing friction plates 5, 5 are swingably supported by pins (first swing support portions) 51 on the left and right sides of the outer column 11 in the vehicle width direction. ing. The first swing friction plates 5 and 5 are sandwiched between the inner side surfaces 331 and 341 of the side plates 33 and 34 of the vehicle body mounting bracket 3 and the side surfaces 14 and 15 of the distance bracket 13.

  The pin 51 is disposed on the central axis 112 of the outer column 11 on the vehicle body upper side than the telescopic adjustment long grooves 16 and 17. The pin 51 may be arranged on the vehicle body lower side than the telescopic adjustment long grooves 16 and 17. The first oscillating friction plates 5 and 5 are rectangular thin plates formed elongated along a straight line connecting the pin 51 and the fastening rod 4, and are formed long along a straight line connecting the pin 51 and the fastening rod 4. One long groove 52 is provided. The first long groove 52 may be formed to be inclined with respect to a straight line connecting the pin 51 and the fastening rod 4. The tightening rod 4 is inserted into the first long grooves 52 and 52. The first long groove 52 is not limited to a linear shape, and may be an arc shape. The position of the pin 51 is not limited to the center axis 112 of the outer column 11, and may be above or below the center axis 112, and more than the rear end of the telescopic adjustment long grooves 16, 17 in the vehicle body. It may be on the vehicle body rear side or on the vehicle body front side with respect to the vehicle body front ends of the telescopic adjustment long grooves 16 and 17.

  A fixed cam (not shown), a movable cam (not shown), and an operation lever 41 are fitted on the left end of the clamping rod 4 in this order on the outside of the outer surface 332 of the side plate 33. Further, a female screw (not shown) formed on the inner diameter portion of the nut 42 is screwed into a male screw (not shown) formed on the right end of the tightening rod 4, and the left end surface of the nut 42 is connected to the outer surface 342 of the side plate 34. It is in contact.

  Complementary inclined cam surfaces are formed on the opposing end surfaces of the fixed cam and the movable cam and mesh with each other. When the operation lever 41 is operated by hand, the movable cam rotates with respect to the fixed cam. When the operation lever 41 is rotated in the clamping direction, the mountain of the inclined cam surface of the movable cam rides on the mountain of the inclined cam surface of the fixed cam, pulling the clamping rod 4 to the left side of FIG. Push to the right. The tightening rod 4 is disposed on the vehicle body lower side than the central axis 112 of the outer column 11, but may be disposed on the vehicle body upper side than the central axis 112. In that case, the arrangement of the first oscillating friction plates 5 and 5 and the pin 51 is upside down with respect to FIG.

  The side plate 33 is pushed rightward by the right end surface of the fixed cam, the side plate 33 is deformed inward, and the inner side surface 331 of the side plate 33 is strongly pressed against the side surface 14 of the distance bracket 13 via the first swing friction plate 5. . At the same time, the right nut 42 presses the outer side surface 342 of the side plate 34 to deform the side plate 34 inward, and the inner side surface 341 of the side plate 34 is connected to the side surface 15 of the distance bracket 13 via the first rocking friction plate 5. Press strongly against. That is, the first rocking friction plates 5 and 5 are configured such that the outer column 11 is attached to the vehicle body mounting bracket by the frictional force generated between the inner side surfaces 331 and 341 of the side plates 33 and 34 and the side surfaces 14 and 15 of the distance bracket 13. Tighten to 3 firmly.

  In this manner, the distance bracket 13 of the outer column 11 can be firmly fastened to the vehicle body mounting bracket 3. Then, the width of the slit 12 of the outer column 11 is reduced, the inner peripheral surface 111 of the outer column 11 is reduced in diameter, the inner peripheral surface 111 of the outer column 11 is tightened to the outer peripheral surface of the inner column 10, and the outer column 11 is The relative movement with respect to the inner column 10 is prevented. Accordingly, the outer column 11 is fixed to the vehicle body mounting bracket 3, and displacement of the outer column 11 in the tilt direction and the telescopic direction is prevented.

  Next, when the driver rotates the operation lever 41 in the tightening release direction, the side plate 33 of the vehicle body mounting bracket 3 in which the interval in the free state is set wider than the outer width of the first rocking friction plates 5, 5. , 34 elastically return in the direction opposite to the clamping direction.

  Therefore, the outer column 11 is free with respect to the side plates 33 and 34 of the vehicle body mounting bracket 3. Accordingly, the tilting direction of the outer column 11 (the steering wheel 102) can be arbitrarily adjusted by displacing the tightening rod 4 in the tilting direction while guiding the tightening rod 4 to the long grooves 35 and 36 for tilt adjustment. When the outer column 11 is adjusted in the tilt direction, the first rocking friction plates 5 and 5 are swung clockwise or counterclockwise by being pushed by the tightening rod 4. The tightening rod 4 moves along the first long groove 52 in a direction approaching the pin 51 or away from the pin 51, and the movement along the tilt adjusting long grooves 35 and 36 of the tightening rod 4 and the first swing friction plate. The difference between the trajectories of the swing motions 5 and 5 is absorbed.

  Further, the telescopic adjustment of the steering wheel 102 can be arbitrarily performed by displacing the outer column 11 in the telescopic direction while guiding the telescopic adjustment long grooves 16 and 17 to the tightening rod 4.

  As shown in FIG. 5, when the outer column 11 is moved to the front side of the vehicle body in the telescopic direction (left side in FIG. 5), the first rocking friction plates 5 and 5 are swung counterclockwise by being pushed by the tightening rod 4. To do. The tightening rod 4 moves along the first long groove 52 in a direction approaching the pin 51, and absorbs the difference between the linear motion of the tightening rod 4 and the locus of the swing motion of the first swing friction plates 5, 5. As shown in FIG. 6, when the outer column 11 is moved to the rear side of the vehicle body in the telescopic direction (right side in FIG. 6), the first rocking friction plates 5 and 5 are swung clockwise by being pulled by the tightening rod 4. To do. The clamping rod 4 moves along the first long groove 52 in a direction away from the pin 51, and absorbs the difference between the linear movement of the clamping rod 4 and the locus of the swinging motion of the first swinging friction plates 5 and 5.

  When the vehicle body collides in a state where the distance bracket 13 of the outer column 11 is firmly clamped and clamped to the vehicle body mounting bracket 3 via the first rocking friction plates 5 and 5, the driver uses the inertial force to drive the steering wheel 102. Collide with. Then, an impact force to the front side of the vehicle body acts on the tilt adjusting long grooves 35 and 36 via the outer column 11 and the tightening rod 4. Then, since the first rocking friction plates 5 and 5 are compressed and bent between the pin 51 and the tightening rod 4, the tightening axial force of the tightening rod 4 is increased, and the distance bracket 13 is fastened to the vehicle body mounting bracket 3. Clamping force increases.

  Therefore, the outer column 11 does not start moving from the vehicle body mounting bracket 3 to the vehicle body front side against the tightening force due to the impact load applied to the vehicle body front side at the time of the secondary collision. As a result, the vehicle body mounting bracket 3 is smoothly detached from the vehicle body with a predetermined collapse load, so that the shock absorbing performance is stabilized. Further, since it is not necessary to interpose a washer between the first swing friction plate 5 and the vehicle body mounting bracket 3, the size and the number of parts of the steering device in the vehicle width direction can be reduced, and an increase in the weight of the steering device is suppressed. it can. The first rocking friction plates 5 and 5 are provided between the outer surface 332 of the side plate 33 of the vehicle body mounting bracket 3 and the right end surface of the fixed cam, and the outer surface 342 of the side plate 34 of the vehicle body mounting bracket 3 and the left end of the nut 42. It may be sandwiched between the surfaces.

  Next, a second embodiment of the present invention will be described. FIG. 7 is an enlarged front view showing the vicinity of the vehicle body mounting bracket of the steering device according to the second embodiment of the present invention, and is an enlarged front view showing a state in which the outer column is moved to the vehicle body lower side moving end in the tilt direction. 8 is a cross-sectional view taken along the line CC of FIG. 7, and FIG. 9 is an enlarged front view showing a state in which the outer column has been moved to the vehicle body upper side movement end in the tilt direction. In the following description, only structural parts different from the above-described embodiment will be described, and redundant description will be omitted. Further, the same parts will be described with the same numbers. The second embodiment is an example in which a second swing friction plate that swings following the movement of the outer column 11 in the tilt direction is attached.

  As shown in FIGS. 7 to 9, second rocking friction plates 6, 6 are provided on the outer surfaces 332, 342 of the side plates 33, 34 of the vehicle body mounting bracket 3 by pins (second rocking support portions) 61. It is supported so that it can swing. The second rocking friction plates 6, 6 are provided between the outer surface 332 of the side plate 33 of the vehicle body mounting bracket 3 and the right end surface of the fixed cam, and the outer surface 342 of the side plate 34 of the vehicle body mounting bracket 3 and the left end of the nut 42. It is sandwiched between the faces.

  The pin 61 is disposed on the upper side of the vehicle body relative to the upper ends of the tilt adjusting long grooves 35 and 36. The pin 61 may be disposed on the vehicle body lower side than the lower ends of the tilt adjusting long grooves 35 and 36. The second oscillating friction plates 6, 6 are rectangular thin plates formed elongated along a straight line connecting the pin 61 and the clamping rod 4, and are formed long along a straight line connecting the pin 61 and the clamping rod 4. Two long grooves 62 are provided. The second long groove 62 may be formed to be inclined with respect to a straight line connecting the pin 61 and the fastening rod 4. The tightening rod 4 is inserted into the second long grooves 62 and 62. The second long groove 62 is not limited to a linear shape, and may be an arc shape.

  When the operation lever 41 is rotated in the clamping direction, the mountain of the inclined cam surface of the movable cam rides on the mountain of the inclined cam surface of the fixed cam, pulling the fastening rod 4 to the left side of FIG. Push to the right. The second swing friction plate 6 is pushed to the right by the right end surface of the fixed cam, the second swing friction plate 6 and the side plate 33 are deformed inward, and the inner side surface 331 of the side plate 33 is brought into contact with the side surface 14 of the distance bracket 13. Strongly pressed. At the same time, the right nut 42 presses the outer surface 342 of the side plate 34 via the second rocking friction plate 6 to deform the side plate 34 inward, and the inner side surface 341 of the side plate 34 becomes the side surface 15 of the distance bracket 13. Press firmly.

  That is, the second oscillating friction plates 6 and 6 cause the outer column 11 to move by the friction force generated between the outer side surfaces 332 and 342 of the side plates 33 and 34, the right end surface of the fixed cam, and the left end surface of the nut 42. Tighten to the body mounting bracket 3 firmly. In this manner, the distance bracket 13 of the outer column 11 can be firmly fastened to the vehicle body mounting bracket 3.

  Then, the width of the slit 12 of the outer column 11 is reduced, the inner peripheral surface 111 of the outer column 11 is reduced in diameter, the inner peripheral surface 111 of the outer column 11 is tightened to the outer peripheral surface of the inner column 10, and the outer column 11 is The relative movement with respect to the inner column 10 is prevented. Accordingly, the outer column 11 is fixed to the vehicle body mounting bracket 3, and displacement of the outer column 11 in the tilt direction and the telescopic direction is prevented.

  Next, when the driver rotates the operation lever 41 in the tightening release direction, the side plate 33 of the vehicle body mounting bracket 3 in which the interval in the free state is set wider than the outer width of the side surfaces 14 and 15 of the distance bracket 13, 34 elastically return in the direction opposite to the clamping direction.

  Therefore, the outer column 11 is free with respect to the side plates 33 and 34 of the vehicle body mounting bracket 3. Therefore, the tilt direction of the steering wheel 102 can be arbitrarily adjusted by displacing the tightening rod 4 in the tilt direction while guiding the tightening rod 4 to the long grooves 35 and 36 for tilt adjustment. Further, the telescopic adjustment of the steering wheel 102 can be arbitrarily performed by displacing the outer column 11 in the telescopic direction while guiding the telescopic adjustment long grooves 16 and 17 to the tightening rod 4. A round hole (through hole) may be formed in place of the telescopic adjustment long grooves 16 and 17, and the present invention may be applied to a steering apparatus that can only adjust the tilt direction.

  FIG. 7 shows the vehicle body lower side moving end of the outer column 11 in the tilt direction. When the outer column 11 is moved to the upper side of the vehicle body in the tilt direction (upper side in FIG. 7) from this state, the second rocking friction plates 6 and 6 are pushed counterclockwise by being pushed by the tightening rod 4 as shown in FIG. Rocks. The tightening rod 4 moves along the second long groove 62 in a direction approaching the pin 61, and the movement of the tightening rod 4 along the tilt adjusting long grooves 35 and 36 and the swing motion of the second swing friction plates 6 and 6. Absorbs the difference in trajectory.

  When the vehicle body collides in a state where the distance bracket 13 of the outer column 11 is firmly clamped and clamped to the vehicle body mounting bracket 3 via the second rocking friction plates 6, 6, the driver uses the inertial force to drive the steering wheel 102. Collide with. Then, an impact force to the upper side of the vehicle body acts on the second swing friction plates 6 and 6 via the outer column 11 and the tightening rod 4. Then, since the first rocking friction plates 6 and 6 are compressed and bent between the pin 61 and the tightening rod 4, the tightening axial force of the tightening rod 4 increases, and the distance bracket 13 is tightened to the vehicle body mounting bracket 3. Clamping force increases.

  Therefore, the outer column 11 does not start moving from the vehicle body mounting bracket 3 to the vehicle body upper side against the tightening force due to the impact load on the vehicle body upper side at the time of the secondary collision. As a result, the vehicle body mounting bracket 3 is smoothly detached from the vehicle body with a predetermined collapse load, so that the shock absorbing performance is stabilized. In addition, since it is not necessary to interpose a washer between the second rocking friction plate 6 and the vehicle body mounting bracket 3, the size and the number of parts of the steering device can be reduced, and an increase in the weight of the steering device is suppressed. it can.

  Next, a third embodiment of the present invention will be described. FIG. 10 is a cross-sectional view showing a steering apparatus according to a third embodiment of the present invention, which corresponds to FIG. In the following description, only structural parts different from the above-described embodiment will be described, and redundant description will be omitted. Further, the same parts will be described with the same numbers. Example 3 is an example in which the second rocking friction plate is attached to the inner surface of the side plate.

  As shown in FIG. 10, second rocking friction plates 6, 6 can be swung by pins (second rocking support portions) 61 on the inner surfaces 331, 341 of the side plates 33, 34 of the vehicle body mounting bracket 3. It is supported by. The second swing friction plates 6 and 6 are sandwiched between the inner side surfaces 331 and 341 of the side plates 33 and 34 of the vehicle body mounting bracket 3 and the side surfaces 14 and 15 of the distance bracket 13.

  The pin 61 is disposed on the upper side of the vehicle body relative to the upper ends of the tilt adjusting long grooves 35 and 36. The second oscillating friction plates 6, 6 are rectangular thin plates formed elongated along a straight line connecting the pin 61 and the clamping rod 4, and are formed long along a straight line connecting the pin 61 and the clamping rod 4. 2 long grooves (not shown). The tightening rod 4 is inserted into the second long groove.

  When the operating lever 41 is rotated in the clamping direction, the crest of the inclined cam surface of the movable cam rides on the crest of the inclined cam surface of the fixed cam and pulls the clamping rod 4 to the left side of FIG. Push to the right. The side plate 33 is pushed rightward by the right end surface of the fixed cam, the side plate 33 is deformed inward, and the inner side surface 331 of the side plate 33 is strongly pressed against the side surface 14 of the distance bracket 13 via the second oscillating friction plate 6. . At the same time, the right nut 42 presses the outer side surface 342 of the side plate 34 to deform the side plate 34 inward, and the inner side surface 341 of the side plate 34 is connected to the side surface 15 of the distance bracket 13 via the second swing friction plate 6. Press strongly against.

  In this manner, the distance bracket 13 of the outer column 11 can be firmly fastened to the vehicle body mounting bracket 3. Then, the width of the slit 12 of the outer column 11 is reduced, the inner peripheral surface 111 of the outer column 11 is reduced in diameter, the inner peripheral surface 111 of the outer column 11 is tightened to the outer peripheral surface of the inner column 10, and the outer column 11 is The relative movement with respect to the inner column 10 is prevented. Accordingly, the outer column 11 is fixed to the vehicle body mounting bracket 3, and displacement of the outer column 11 in the tilt direction and the telescopic direction is prevented.

  Next, a fourth embodiment of the present invention will be described. 11 is a front view of an essential part showing a steering apparatus according to a fourth embodiment of the present invention, FIG. 12 is an enlarged front view of the vicinity of the vehicle body mounting bracket of FIG. 11, and FIG. 13 is a sectional view taken along the line DD of FIG. In the following description, only structural parts different from the above-described embodiment will be described, and redundant description will be omitted. Further, the same parts will be described with the same numbers. Example 4 is an example in which both the first swing friction plate and the second swing friction plate are attached.

  As shown in FIGS. 11 to 13, on the outer peripheral surface 113 of the outer column 11, first swing friction plates 5 and 5 are provided with pins (first swing support) on the left and right sides of the outer column 11 in the vehicle width direction. Part) 51 so as to be swingable. The first swing friction plates 5 and 5 are sandwiched between the inner side surfaces 331 and 341 of the side plates 33 and 34 of the vehicle body mounting bracket 3 and the side surfaces 14 and 15 of the distance bracket 13.

  The pin 51 is disposed on the central axis 112 of the outer column 11 on the vehicle body upper side than the telescopic adjustment long grooves 16 and 17. The pin 51 may be arranged on the vehicle body lower side than the telescopic adjustment long grooves 16 and 17. The first oscillating friction plates 5 and 5 are rectangular thin plates formed elongated along a straight line connecting the pin 51 and the fastening rod 4, and are formed long along a straight line connecting the pin 51 and the fastening rod 4. One long groove 52 is provided. The first long groove 52 may be formed to be inclined with respect to a straight line connecting the pin 51 and the fastening rod 4. The tightening rod 4 is inserted into the first long grooves 52 and 52. The first long groove 52 is not limited to a linear shape, and may be an arc shape. The position of the pin 51 is not limited to the center axis 112 of the outer column 11, and may be above or below the center axis 112, and more than the rear end of the telescopic adjustment long grooves 16, 17 in the vehicle body. It may be on the vehicle body rear side or on the vehicle body front side with respect to the vehicle body front ends of the telescopic adjustment long grooves 16 and 17.

  Second swing friction plates 6, 6 are supported by pins (second swing support portions) 61 on the outer surfaces 332, 342 of the side plates 33, 34 of the vehicle body mounting bracket 3 so as to be swingable. The second rocking friction plates 6, 6 are provided between the outer surface 332 of the side plate 33 of the vehicle body mounting bracket 3 and the right end surface of the fixed cam, and the outer surface 342 of the side plate 34 of the vehicle body mounting bracket 3 and the left end of the nut 42. It is sandwiched between the faces.

  The pin 61 is disposed on the upper side of the vehicle body relative to the upper ends of the tilt adjusting long grooves 35 and 36. The pin 61 may be disposed on the vehicle body lower side than the lower ends of the tilt adjusting long grooves 35 and 36. The second oscillating friction plates 6, 6 are rectangular thin plates formed elongated along a straight line connecting the pin 61 and the clamping rod 4, and are formed long along a straight line connecting the pin 61 and the clamping rod 4. Two long grooves 62 are provided. The second long groove 62 may be formed to be inclined with respect to a straight line connecting the pin 61 and the fastening rod 4. The tightening rod 4 is inserted into the second long grooves 62 and 62. The second long groove 62 is not limited to a linear shape, and may be an arc shape. One of the first long groove 52 and the second long groove 62 may be linear, and the other may be arcuate. Further, both the first long groove 52 and the second long groove 62 may be linear, or both may be arcuate.

  The positions of the first swing friction plates 5 and 5 and the second swing friction plates 6 and 6 are interchanged, and the first swing friction plates 5 and 5 are disposed on the outer surfaces 332 and 342 of the side plates 33 and 34. The two oscillating friction plates 6 and 6 may be disposed between the inner side surfaces 331 and 341 of the side plates 33 and 34 and the side surfaces 14 and 15 of the distance bracket 13. Further, both the first rocking friction plates 5 and 5 and the second rocking friction plates 6 and 6 are connected to the outer surfaces 332 and 342 of the side plates 33 and 34 or the inner surfaces 331 and 341 of the side plates 33 and 34, respectively. You may arrange | position between the side surfaces 14 and 15 of the bracket 13. FIG.

  When the operation lever 41 is rotated in the clamping direction, the mountain of the inclined cam surface of the movable cam rides on the mountain of the inclined cam surface of the fixed cam, pulling the tightening rod 4 to the left side of FIG. Push to the right.

  The second oscillating friction plate 6 is pushed rightward by the right end surface of the fixed cam, the side plate 33 is deformed inward, and the inner side surface 331 of the side plate 33 is connected to the side surface 14 of the distance bracket 13 via the first oscillating friction plate 5. Strongly pressed against. At the same time, the right nut 42 presses the outer side surface 342 of the side plate 34 via the second swing friction plate 6 to deform the side plate 34 inward, and the inner side surface 341 of the side plate 34 is changed to the first swing friction plate. 5 and strongly pressed against the side surface 15 of the distance bracket 13.

  In this manner, the distance bracket 13 of the outer column 11 can be firmly fastened to the vehicle body mounting bracket 3. Then, the width of the slit 12 of the outer column 11 is reduced, the inner peripheral surface 111 of the outer column 11 is reduced in diameter, the inner peripheral surface 111 of the outer column 11 is tightened to the outer peripheral surface of the inner column 10, and the outer column 11 is The relative movement with respect to the inner column 10 is prevented. Accordingly, the outer column 11 is fixed to the vehicle body mounting bracket 3, and displacement of the outer column 11 in the tilt direction and the telescopic direction is prevented. In Embodiment 4 of the present invention, the first swing friction plate 5 and the second swing friction plate 6 are disposed in combination, so that the outer column 11 can be firmly tightened by the vehicle body mounting bracket 3.

  Next, when the driver rotates the operation lever 41 in the tightening release direction, the side plate 33 of the vehicle body mounting bracket 3 in which the interval in the free state is set wider than the outer width of the first rocking friction plates 5, 5. , 34 elastically return in the direction opposite to the clamping direction.

  Therefore, the outer column 11 is free with respect to the side plates 33 and 34 of the vehicle body mounting bracket 3. Therefore, the tilt direction of the steering wheel 102 can be arbitrarily adjusted by displacing the tightening rod 4 in the tilt direction while guiding the tightening rod 4 to the long grooves 35 and 36 for tilt adjustment. Further, the telescopic adjustment of the steering wheel 102 can be arbitrarily performed by displacing the outer column 11 in the telescopic direction while guiding the telescopic adjustment long grooves 16 and 17 to the tightening rod 4.

  When the vehicle body collides in a state where the distance bracket 13 of the outer column 11 is firmly clamped and clamped to the vehicle body mounting bracket 3 via the first rocking friction plates 5, 5 and the second rocking friction plates 6, 6, The driver collides with the steering wheel 102 by the inertia force. Then, an impact force to the front side of the vehicle body acts on the tilt adjusting long grooves 35 and 36 via the outer column 11 and the tightening rod 4. Then, since the first rocking friction plates 5 and 5 are compressed and bent between the pin 51 and the tightening rod 4, the tightening axial force of the tightening rod 4 is increased, and the distance bracket 13 is fastened to the vehicle body mounting bracket 3. Clamping force increases.

  Therefore, the outer column 11 does not start moving from the vehicle body mounting bracket 3 to the vehicle body front side against the tightening force due to the impact load applied to the vehicle body front side at the time of the secondary collision. Further, when an impact force on the upper side of the vehicle body acts on the second swing friction plates 6, 6 via the outer column 11 and the tightening rod 4, the first swing friction plates 6, 6 are connected to the pin 61 and the tightening rod 4. Therefore, the tightening axial force of the tightening rod 4 increases, and the clamping force for tightening the distance bracket 13 to the vehicle body mounting bracket 3 increases.

  Therefore, the outer column 11 does not start moving from the vehicle body mounting bracket 3 to the vehicle body upper side against the tightening force due to the impact load on the vehicle body upper side at the time of the secondary collision. As a result, the vehicle body mounting bracket 3 is smoothly detached from the vehicle body with a predetermined collapse load, so that the shock absorbing performance is stabilized. Further, since it is not necessary to provide a washer between the first swing friction plate 5 and the vehicle body mounting bracket 3 and between the second swing friction plate 6 and the vehicle body mounting bracket 3, the vehicle width of the steering device can be reduced. The direction dimension and the number of parts can be reduced, and an increase in the weight of the steering device can be suppressed.

  Next, a fifth embodiment of the present invention will be described. FIG. 14 is a front view of an essential part showing a steering apparatus according to Embodiment 5 of the present invention. In the following description, only structural parts different from the above-described embodiment will be described, and redundant description will be omitted. Further, the same parts will be described with the same numbers. The fifth embodiment is an example in which the first swing friction plate is attached and the long grooves 35 and 36 for tilt adjustment are inclined and formed on the rear side of the vehicle body with respect to the arc centered on the pivot pin 22.

  As shown in FIG. 14, tilt adjustment long grooves 35 and 36 are formed in the side plates 33 and 34 of the vehicle body mounting bracket 3. The tilt adjusting long grooves 35 and 36 are formed so as to be inclined toward the vehicle rear side from the vehicle body lower side toward the vehicle body upper side. In other words, the long grooves 35 and 36 for tilt adjustment are formed so as to be inclined toward the rear side of the vehicle body with respect to the arc 114 centered on the pivot pin 22. That is, the long slots 35 and 36 for tilt adjustment are inclined toward the rear side of the vehicle body by an inclination angle α with respect to a plane 116 orthogonal to a straight line 115 connecting the center of the pivot pin 22 (the pivot center) and the center of the clamping rod 4. Is formed.

  The distance bracket 13 is formed with telescopic adjustment long grooves 16 and 17 extending parallel to the central axis 112 of the outer column 11 on the lower side of the vehicle body than the central axis 112 of the outer column 11. The round rod-shaped fastening rod 4 is inserted from the front side perpendicular to the paper surface of FIG. 14 through the long grooves 35 and 36 for tilt adjustment and the long grooves 16 and 17 for telescopic adjustment.

  On the outer peripheral surface of the outer column 11, first swing friction plates 5, 5 are swingably supported by pins (first swing support portions) 51 on the left and right sides of the outer column 11 in the vehicle width direction. Yes. The first swing friction plates 5 and 5 are sandwiched between the inner side surfaces of the side plates 33 and 34 of the vehicle body mounting bracket 3 and the side surface of the distance bracket 13.

  The pin 51 is disposed on the central axis 112 of the outer column 11 on the vehicle body upper side than the telescopic adjustment long grooves 16 and 17. The pin 51 may be arranged on the vehicle body lower side than the telescopic adjustment long grooves 16 and 17. The first oscillating friction plates 5 and 5 are rectangular thin plates formed elongated along a straight line connecting the pin 51 and the fastening rod 4, and are formed long along a straight line connecting the pin 51 and the fastening rod 4. One long groove 52 is provided. The first long groove 52 may be formed to be inclined with respect to a straight line connecting the pin 51 and the fastening rod 4. The tightening rod 4 is inserted into the first long grooves 52 and 52. The first long groove 52 is not limited to a linear shape, and may be an arc shape. The position of the pin 51 is not limited to the center axis 112 of the outer column 11, and may be above or below the center axis 112, and more than the rear end of the telescopic adjustment long grooves 16, 17 in the vehicle body. It may be on the vehicle body rear side or on the vehicle body front side with respect to the vehicle body front ends of the telescopic adjustment long grooves 16 and 17.

  When the vehicle body collides in a state where the distance bracket 13 of the outer column 11 is firmly clamped and clamped to the vehicle body mounting bracket 3 via the first rocking friction plates 5 and 5, the driver uses the inertial force to drive the steering wheel 102. Collide with. Then, an impact force to the front side of the vehicle body acts on the tilt adjusting long grooves 35 and 36 via the outer column 11 and the tightening rod 4. Then, since the first rocking friction plates 5 and 5 are compressed and bent between the pin 51 and the tightening rod 4, the tightening axial force of the tightening rod 4 is increased, and the distance bracket 13 is fastened to the vehicle body mounting bracket 3. Clamping force increases.

  Therefore, the outer column 11 does not start moving from the vehicle body mounting bracket 3 to the vehicle body front side against the tightening force due to the impact load applied to the vehicle body front side at the time of the secondary collision. Further, the tilt adjusting long grooves 35 and 36 are formed so as to be inclined to the rear side of the vehicle body by an inclination angle α with respect to a plane 116 orthogonal to a straight line 115 connecting the center of the pivot pin 22 and the center of the clamping rod 4. Yes. Therefore, even if an impact force directed to the upper side of the vehicle body is input to the outer column 11, the outer column 11 is disposed on the rear side of the vehicle body in the column axial direction against the collapse load in the column axial direction toward the front side of the vehicle body that acts simultaneously. The rear column must be retreated, the outer column 11 can be prevented from moving upward, and the airbag can effectively catch the driver.

  Next, a sixth embodiment of the present invention will be described. 15 is an enlarged front view in the vicinity of the vehicle body mounting bracket of the steering device according to the sixth embodiment of the present invention. FIG. 16 is an enlarged front view showing a state in which the outer column is moved to the vehicle body front side moving end in the telescopic direction in FIG. FIG. 3 is an enlarged front view in which a vehicle body mounting bracket is omitted. FIG. 17 is an enlarged front view showing a state in which the outer column is moved to the vehicle body rear side moving end in the telescopic direction in FIG. 15, and is an enlarged front view in which the vehicle body mounting bracket is omitted. FIG. 18 is an enlarged front view showing a state where the outer column is moved to an intermediate position in the telescopic direction in FIG. 15, and is an enlarged front view in which the vehicle body mounting bracket is omitted.

  FIG. 19 is an enlarged front view showing a state in which the outer column has a secondary collision at an intermediate position in the telescopic direction and the first long groove is plastically deformed, and is an enlarged front view in which the vehicle body mounting bracket is omitted. In the following description, only structural parts different from the above-described embodiment will be described, and redundant description will be omitted. Further, the same parts will be described with the same numbers. Example 6 is an example in which a third long groove is formed along the first long groove in order to facilitate plastic deformation of the first long groove during a secondary collision.

  As shown in FIGS. 15 to 19, tilt adjustment long grooves 35 and 36 are formed in the side plates 33 and 34 of the vehicle body mounting bracket 3. The tilt adjusting long grooves 35 and 36 are formed in an arc shape centered on the pivot pin. The long slots 35 and 36 for tilt adjustment are not limited to the arc shape, but may be a rectangular shape in which the tightening rod 4 can move in an arc.

  The distance bracket 13 is formed with telescopic adjustment long grooves 16 and 17 extending parallel to the central axis 112 of the outer column 11 on the lower side of the vehicle body than the central axis 112 of the outer column 11. The round rod-shaped fastening rod 4 is inserted from the front side perpendicular to the paper surface of FIG. 15 through the tilt adjusting long grooves 35 and 36 and the telescopic adjusting long grooves 16 and 17.

  On the outer peripheral surface of the outer column 11, first swing friction plates 7, 7 are swingably supported by pins (first swing support portions) 71 on the left and right sides of the outer column 11 in the vehicle width direction. Yes. The first rocking friction plates 7 and 7 are sandwiched between the inner side surfaces of the side plates 33 and 34 of the vehicle body mounting bracket 3 and the side surface of the distance bracket 13.

  The pin 71 is disposed on the central axis 112 of the outer column 11 on the vehicle body upper side than the telescopic adjustment long grooves 16 and 17. The pin 71 may be disposed on the vehicle body lower side than the telescopic adjustment long grooves 16 and 17. The first oscillating friction plate 7 according to the sixth embodiment is a substantially rectangular thin plate that is elongated along a straight line connecting the pin 71 and the clamping rod 4, and is formed long along a straight line connecting the pin 71 and the clamping rod 4. The first long groove 72 is formed. The first long groove 72 may be formed to be inclined with respect to a straight line connecting the pin 71 and the fastening rod 4. The tightening rod 4 is inserted into the first long groove 72. The first long groove 72 is not limited to a linear shape, and may be an arc shape. The position of the pin 71 is not limited to the center axis 112 of the outer column 11, and may be above or below the center axis 112, and more than the rear end of the telescopic adjustment long grooves 16, 17 in the vehicle body. It may be on the vehicle body rear side or on the vehicle body front side with respect to the vehicle body front ends of the telescopic adjustment long grooves 16 and 17.

  The first rocking friction plate 7 of the sixth embodiment is slightly different from the first rocking friction plate 5 of the first embodiment, and the side 74 on the rear side of the vehicle body is formed in an arc shape that is convex on the rear side of the vehicle body. ing. A third long groove 73 having substantially the same length as the first long groove 72 is formed along the first long groove 72 on the vehicle body rear side of the first long groove 72.

  Therefore, the tilting direction of the outer column 11 can be arbitrarily adjusted by displacing the tightening rod 4 in the tilting direction while guiding the tightening rod 4 to the long grooves 35 and 36 for tilting adjustment. When the outer column 11 is adjusted in the tilt direction, the first rocking friction plates 7 and 7 are swung clockwise or counterclockwise by being pushed by the tightening rod 4. The tightening rod 4 moves along the first long groove 72 in a direction approaching the pin 71 or away from the pin 71, and the movement along the tilt adjusting long grooves 35 and 36 of the tightening rod 4 and the first swing friction plate. Absorbs the difference between the trajectories of the swing motions 7 and 7.

  As shown in FIG. 16, when the outer column 11 is moved to the front side of the vehicle body in the telescopic direction (left side in FIG. 16), the first rocking friction plates 7 and 7 are swung counterclockwise by being pushed by the tightening rod 4. To do. The tightening rod 4 moves along the first long groove 72 in a direction approaching the pin 71 and absorbs the difference between the linear motion of the tightening rod 4 and the locus of the swing motion of the first swing friction plates 7 and 7. As shown in FIG. 17, when the outer column 11 is moved to the rear side of the vehicle body in the telescopic direction (right side in FIG. 17), the first rocking friction plates 7 and 7 are swung clockwise by being pulled by the tightening rod 4. To do. The clamping rod 4 moves along the first long groove 72 in the direction away from the pin 71, and absorbs the difference between the linear movement of the clamping rod 4 and the locus of the swinging motion of the first swinging friction plates 7 and 7.

  At a middle position in the telescopic direction of the outer column 11 shown in FIG. 18, the distance bracket 13 of the outer column 11 is firmly tightened and clamped to the vehicle body mounting bracket 3 via the first swing friction plates 7 and 7. In this state, when the vehicle body collides, the driver collides with the steering wheel 102 by the inertial force. Then, an impact force to the front side of the vehicle body acts on the tilt adjusting long grooves 35 and 36 via the outer column 11 and the tightening rod 4.

  Then, a large impact force to the rear side of the vehicle body acts on the tightening rod 4 by the reaction force from the long grooves 35 and 36 for tilt adjustment. Since the first long groove 72 has the third long groove 73, the deformation to the third long groove 73 side is easily formed by the load on the rear side of the vehicle body. Accordingly, as shown in FIG. 19, the first long groove 72 is plastically deformed to the third long groove 73 side by a large impact force acting on the tightening rod 4 toward the rear side of the vehicle body.

  As a result, the pressure angle θ1 at the contact position between the tightening rod 4 and the first long groove 72 becomes large, and the tightening rod 4 becomes difficult to move along the first long groove 72. The pressure angle θ <b> 1 is an angle formed by the common normal line 75 of the contact position between the tightening rod 4 and the first long groove 72 and the moving direction 76 of the tightening rod 4. The first rocking friction plate 7 of the sixth embodiment is formed in an arc shape in which a side 74 on the rear side of the vehicle body is convex toward the rear side of the vehicle body. Therefore, the first rocking friction plate 7 has a wide width on the vehicle body rear side of the third long groove 73 and can support a large impact force on the vehicle body rear side acting on the tightening rod 4.

  Therefore, the outer column 11 does not start moving from the vehicle body mounting bracket 3 to the vehicle body front side against the tightening force due to the impact load applied to the vehicle body front side at the time of the secondary collision. As a result, the vehicle body mounting bracket 3 is smoothly detached from the vehicle body with a predetermined collapse load, so that the shock absorbing performance is stabilized. The first rocking friction plates 7 and 7 are provided between the outer surface of the side plate 33 of the vehicle body mounting bracket 3 and the right end surface of the fixed cam, and between the outer surface of the side plate 34 of the vehicle body mounting bracket 3 and the left end surface of the nut. It may be sandwiched between them.

  Next, a seventh embodiment of the present invention will be described. FIG. 20 is an enlarged front view showing the vicinity of the vehicle body mounting bracket of the steering device according to the seventh embodiment of the present invention, and is an enlarged front view showing a state where the outer column is moved to the vehicle body lower side moving end in the tilt direction. FIG. 21 is an enlarged front view showing a state where the outer column is moved to the vehicle body upper side movement end in the tilt direction in FIG. FIG. 22 is an enlarged front view showing a state in which the second long groove is plastically deformed by a secondary collision in a state where the outer column is moved to the intermediate position in the tilt direction in the seventh embodiment of the present invention.

  In the following description, only structural parts different from the above-described embodiment will be described, and redundant description will be omitted. Further, the same parts will be described with the same numbers. In the seventh embodiment, a second rocking friction plate that rocks following the movement of the outer column in the tilt direction is attached, and in order to facilitate plastic deformation of the second long groove during a secondary collision, It is the example which formed the 4th long slot along.

  As shown in FIGS. 20 to 22, tilt adjustment long grooves 35 and 36 are formed in the side plates 33 and 34 of the vehicle body mounting bracket 3. The tilt adjusting long grooves 35 and 36 are formed in an arc shape centered on the pivot pin. A round rod-shaped fastening rod 4 is inserted from the near side perpendicular to the paper surface of FIG. 20 through the long slots 35 and 36 for tilt adjustment.

  On the outer side surfaces of the side plates 33 and 34 of the vehicle body mounting bracket 3, second swing friction plates 8 and 8 are swingably supported by pins (second swing support portions) 81 and 81. The pin 81 is disposed on the vehicle body upper side than the upper ends of the tilt adjusting long grooves 35 and 36. The pin 81 may be disposed on the vehicle body lower side than the lower ends of the tilt adjusting long grooves 35 and 36. The second oscillating friction plate 8 of the seventh embodiment is a substantially rectangular thin plate that is elongated along a straight line connecting the pin 81 and the clamping rod 4, and is formed long along a straight line connecting the pin 81 and the clamping rod 4. The second long groove 82 is provided. The second long groove 82 may be formed to be inclined with respect to a straight line connecting the pin 81 and the tightening rod 4. The tightening rod 4 is inserted into the second long groove 82. The second long groove 82 is not limited to a linear shape, and may be an arc shape.

  The second rocking friction plate 8 of the seventh embodiment has a slightly different shape from the second rocking friction plate 6 of the second embodiment, and the side 84 on the rear side of the vehicle body is formed in an arc shape that is convex on the rear side of the vehicle body. Yes. The side 84 on the vehicle body rear side may be linear. A fourth long groove 83 having substantially the same length as the second long groove 82 is formed along the second long groove 82 on the vehicle body rear side of the second long groove 82.

  FIG. 20 shows the vehicle body lower side moving end in the tilt direction of the outer column 11. When the outer column 11 is moved to the upper side of the vehicle body in the tilt direction (upper side in FIG. 20) from this state, as shown in FIG. 21, the second rocking friction plates 8 and 8 are pushed counterclockwise by being pushed by the tightening rod 4. Rocks. The tightening rod 4 moves along the second long groove 82 in a direction approaching the pin 81, and the movement of the tightening rod 4 along the tilt adjusting long grooves 35 and 36 and the swing motion of the second swing friction plates 8 and 8. Absorbs the difference in trajectory.

  At a middle position of the outer column 11 in the tilt direction, the distance bracket 13 of the outer column 11 is firmly clamped and clamped to the vehicle body mounting bracket 3 via the second swing friction plates 8 and 8. In this state, when the vehicle body collides, the driver collides with the steering wheel 102 by the inertial force. Then, an impact force to the upper side of the vehicle body acts on the second swing friction plates 8 and 8 via the outer column 11 and the tightening rod 4.

  Since the second long groove 82 has the fourth long groove 83, the second long groove 82 is easily deformed to the fourth long groove 83 side by a load on the vehicle body upper side. Accordingly, as shown in FIG. 22, the second long groove 82 is plastically deformed toward the fourth long groove 83 due to a large impact force acting on the tightening rod 4 toward the upper side of the vehicle body.

  As a result, the pressure angle θ2 at the contact position between the tightening rod 4 and the second long groove 82 becomes large, and it becomes difficult for the tightening rod 4 to move along the second long groove 82. The pressure angle θ <b> 2 is an angle formed by the common normal line 85 of the contact position between the tightening rod 4 and the second long groove 82 and the moving direction 86 of the tightening rod 4. The second oscillating friction plate 8 of the seventh embodiment is formed in a circular arc shape with a side 84 on the vehicle body rear side convex to the vehicle body rear side. Therefore, the second rocking friction plate 8 has a wide width on the vehicle rear side of the fourth long groove 83 and can support a large impact force on the vehicle body upper side acting on the tightening rod 4.

  Therefore, the outer column 11 does not start moving from the vehicle body mounting bracket 3 to the vehicle body upper side against the tightening force due to the impact load on the vehicle body upper side at the time of the secondary collision. As a result, the vehicle body mounting bracket 3 is smoothly detached from the vehicle body with a predetermined collapse load, so that the shock absorbing performance is stabilized.

  Next, an eighth embodiment of the present invention will be described. FIG. 23 is a front view of an essential part showing a steering apparatus according to an eighth embodiment of the present invention. In the following description, only structural parts different from the above-described embodiment will be described, and redundant description will be omitted. Further, the same parts will be described with the same numbers. Example 8 is an example in which both the first rocking friction plate of Example 6 and the second rocking friction plate of Example 7 are attached.

  As shown in FIG. 23, on the outer peripheral surface of the outer column 11, first swing friction plates 7, 7 are provided by pins (first swing support portions) 71 on the left and right sides of the outer column 11 in the vehicle width direction. It is supported so that it can swing. The first rocking friction plates 7 and 7 are sandwiched between the inner side surfaces of the side plates 33 and 34 of the vehicle body mounting bracket 3 and the side surface of the distance bracket 13. The first rocking friction plates 7 and 7 have the same shape as that of the sixth embodiment, and the first long groove 72 and the third long groove 73 are formed, and plastic deformation of the first long groove 72 is easily formed. Yes.

  Second swing friction plates 8 and 8 are supported on the outer surfaces of the side plates 33 and 34 of the vehicle body mounting bracket 3 so as to be swingable by pins (second swing support portions) 81. The second rocking friction plates 8 and 8 have the same shape as that of the seventh embodiment, the second long groove 82 and the fourth long groove 83 are formed, and the plastic deformation of the second long groove 82 is easily formed. Yes. In the eighth embodiment of the present invention, the first swing friction plate 7 and the second swing friction plate 8 are disposed in combination, so that the outer column 11 can be firmly tightened by the vehicle body mounting bracket 3.

  When the vehicle body collides in a state where the distance bracket 13 of the outer column 11 is firmly clamped and clamped to the vehicle body mounting bracket 3 via the first rocking friction plates 7 and 7 and the second rocking friction plates 8 and 8, The driver collides with the steering wheel 102 by the inertia force. Then, an impact force to the front side of the vehicle body acts on the tilt adjusting long grooves 35 and 36 via the outer column 11 and the tightening rod 4.

  The reaction force from the tilt adjusting long grooves 35, 36 causes a large impact force to the rear side of the vehicle body to act on the tightening rod 4, and the first long groove 72 of the first rocking friction plates 7, 7 becomes the third long groove 73. The pressure angle at the contact position between the tightening rod 4 and the first long groove 72 increases, and the tightening rod 4 becomes difficult to move along the first long groove 72. Therefore, the outer column 11 does not start moving from the vehicle body mounting bracket 3 to the vehicle body front side against the tightening force due to the impact load applied to the vehicle body front side at the time of the secondary collision.

  Further, when an impact force on the upper side of the vehicle body acts on the second swing friction plates 8 and 8 via the outer column 11 and the tightening rod 4, the second long groove 82 of the second swing friction plates 8 and 8 becomes the second long groove 82. 4 is deformed plastically toward the long groove 83 side. As a result, the pressure angle at the contact position between the tightening rod 4 and the second long groove 82 becomes large, and it becomes difficult for the tightening rod 4 to move along the second long groove 82. Therefore, the outer column 11 does not start moving from the vehicle body mounting bracket 3 to the vehicle body upper side against the tightening force due to the impact load on the vehicle body upper side at the time of the secondary collision. As a result, the vehicle body mounting bracket 3 is smoothly detached from the vehicle body with a predetermined collapse load, so that the shock absorbing performance is stabilized.

  The positions of the first rocking friction plates 7 and 7 and the second rocking friction plates 8 and 8 are exchanged, and the first rocking friction plates 7 and 7 are arranged on the outer surfaces of the side plates 33 and 34, so The dynamic friction plates 8 and 8 may be disposed between the inner side surfaces of the side plates 33 and 34 and the side surface of the distance bracket 13. Further, both the first swing friction plates 7 and 7 and the second swing friction plates 8 and 8 are connected to the outer surface of the side plates 33 and 34, or the inner surface of the side plates 33 and 34 and the side surface of the distance bracket 13. You may arrange | position between.

  Next, a ninth embodiment of the present invention will be described. FIG. 24 is an enlarged front view showing a state in which the outer column is moved to the intermediate position in the telescopic direction in the ninth embodiment of the present invention, and is an enlarged front view in which the vehicle body mounting bracket is omitted. FIG. 25 is an enlarged front view showing a state in which the outer column is moved to the vehicle body rear side moving end in the telescopic direction in FIG. 24, and is an enlarged front view in which the vehicle body mounting bracket is omitted. In the following description, only structural parts different from the above-described embodiment will be described, and redundant description will be omitted. Further, the same parts will be described with the same numbers. Example 9 is an example in which the plastic deformation of the first long groove at the time of the secondary collision is stably performed regardless of the adjustment position of the outer column in the telescopic direction.

  As shown in FIGS. 24 to 25, the distance bracket 13 is formed with telescopic adjustment long grooves 16 and 17 extending parallel to the central axis 112 of the outer column 11 on the lower side of the vehicle body than the central axis 112 of the outer column 11. Has been. The round rod-shaped fastening rod 4 is inserted from the front side perpendicular to the paper surface of FIGS. 24 and 25 through the telescopic adjustment long grooves 16 and 17.

  On the outer peripheral surface of the outer column 11, first swing friction plates 9 and 9 are swingably supported by pins (first swing support portions) 91 on the left and right sides of the outer column 11 in the vehicle width direction. Yes. The first swing friction plates 9 and 9 are sandwiched between the inner side surface of the side plate of the vehicle body mounting bracket (not shown) and the side surface of the distance bracket 13.

  The pin 91 is disposed on the central axis 112 of the outer column 11 on the vehicle body upper side than the telescopic adjustment long grooves 16 and 17. The pin 91 may be disposed on the vehicle body lower side than the telescopic adjustment long grooves 16 and 17. The first oscillating friction plate 9 of the ninth embodiment is a substantially rectangular thin plate that is elongated along a straight line connecting the pin 91 and the clamping rod 4, and is formed long along the straight line connecting the pin 91 and the clamping rod 4. The first long groove 92 is provided. The tightening rod 4 is inserted into the first long groove 92. The position of the pin 91 is not limited to the central axis 112 of the outer column 11, and may be above or below the central axis 112, and more than the rear end of the telescopic adjustment long grooves 16, 17 in the vehicle body. It may be on the vehicle body rear side or on the vehicle body front side with respect to the vehicle body front ends of the telescopic adjustment long grooves 16 and 17.

  As in the first swing friction plate 7 of the sixth embodiment, the first swing friction plate 9 of the ninth embodiment has a side 94 on the rear side of the vehicle body that is formed in a convex arc shape on the rear side of the vehicle body. Further, the shape is different from that of the first rocking friction plate 7 of the sixth embodiment, and the side 95 on the front side of the vehicle body is formed in an arc shape that is convex on the front side of the vehicle body. The first long groove 92 of the ninth embodiment is formed in an arc shape with a convex front side of the vehicle body. The first long groove 92 may be formed in an arc shape with a convex rear side of the vehicle body. The first long groove 92 may be formed in an arc shape inclined with respect to a straight line connecting the pin 91 and the tightening rod 4. A third long groove 93 having substantially the same length as the first long groove 92 is formed along the first long groove 92 on the vehicle body rear side of the first long groove 92. The third long groove 93 of the ninth embodiment is also formed in an arc shape with a convex front side of the vehicle body. Further, a notch 96 having a narrow groove width is formed at the end of the first long groove 92 on the vehicle body front side. The notch 96 can also be applied to the first long groove 72 of the sixth embodiment, the second long groove 82 of the seventh embodiment, the first long groove 72 of the eighth embodiment, and the second long groove 82. .

  FIG. 24 shows a state in which the outer column 11 has been moved to an intermediate position in the telescopic direction, and FIG. 25 shows a state in which the outer column 11 has been moved to the vehicle body rear side movement end in the telescopic direction. As described above, the first long groove 92 of the ninth embodiment is formed in an arc shape with a convex front side of the vehicle body. Therefore, the angle between the tangent line 97 at the contact position between the tightening rod 4 and the first long groove 92 and the central axis 112 of the outer column 11 is β1 in the state of FIG. 24, β2 in the state of FIG. And β2 are maintained substantially constant. As a result, when the vehicle body collides and an impact force on the rear side of the vehicle body acts on the clamping rod 4, a substantially constant load is applied to the first long groove 92 regardless of the adjustment position of the outer column 11 in the telescopic direction. Therefore, plastic deformation of the first long groove 92 toward the third long groove 93 is stably performed.

  Further, as shown in FIG. 25, when the vehicle body collides with the outer column 11 moved to the vehicle body rear side moving end in the telescopic direction, an impact force to the vehicle body rear side acts on the tightening rod 4, and the first long groove A load on the rear side of the vehicle body acts on 92. Since the position where this load acts is the end of the first long groove 92 on the vehicle body front side, the bending moment acting on the first long groove 92 is reduced. However, since the notch 96 is formed at the front end of the vehicle body in the first long groove 92, stress concentrates on the notch 96, and the first long groove 92 is on the third long groove 93 side. It can be easily plastically deformed. The notch 96 may be formed at the end of the first long groove 92 on the vehicle body rear side. Further, the notch 96 may be formed at both the front end of the first long groove 92 and the end of the rear of the vehicle.

  Next, a tenth embodiment of the present invention will be described. FIG. 26 is a front view of an essential part showing the steering apparatus according to the tenth embodiment of the present invention. In the following description, only structural parts different from the above-described embodiment will be described, and redundant description will be omitted. Further, the same parts will be described with the same numbers. The tenth embodiment is an example in which the first swing friction plate of the sixth embodiment is attached and the tilt adjusting long grooves 35 and 36 are inclined and formed on the rear side of the vehicle body with respect to the arc centered on the pivot pin 22. .

  As shown in FIG. 26, tilt adjustment long grooves 35 and 36 are formed in the side plates 33 and 34 of the vehicle body mounting bracket 3. The tilt adjusting long grooves 35 and 36 are formed so as to be inclined toward the vehicle rear side from the vehicle body lower side toward the vehicle body upper side. In other words, the long grooves 35 and 36 for tilt adjustment are formed so as to be inclined toward the rear side of the vehicle body with respect to the arc 114 centered on the pivot pin 22. That is, the long slots 35 and 36 for tilt adjustment are inclined toward the rear side of the vehicle body by an inclination angle α with respect to a plane 116 orthogonal to a straight line 115 connecting the center of the pivot pin 22 (the pivot center) and the center of the clamping rod 4. Is formed.

  The distance bracket 13 is formed with telescopic adjustment long grooves 16 and 17 extending parallel to the central axis 112 of the outer column 11 on the lower side of the vehicle body than the central axis 112 of the outer column 11. The round rod-shaped fastening rod 4 is inserted from the front side perpendicular to the paper surface of FIG. 26 through the tilt adjusting long grooves 35 and 36 and the telescopic adjusting long grooves 16 and 17.

  On the outer peripheral surface of the outer column 11, first swing friction plates 7, 7 are swingably supported by pins (first swing support portions) 71 on the left and right sides of the outer column 11 in the vehicle width direction. Yes. The first rocking friction plates 7 and 7 are sandwiched between the inner side surfaces of the side plates 33 and 34 of the vehicle body mounting bracket 3 and the side surface of the distance bracket 13.

  The pin 71 is disposed on the central axis 112 of the outer column 11 on the vehicle body upper side than the telescopic adjustment long grooves 16 and 17. The first oscillating friction plates 7, 7 are thin and substantially rectangular thin plates formed along a straight line connecting the pin 71 and the clamping rod 4, and are formed long along a straight line connecting the pin 71 and the clamping rod 4. A first long groove 72 is provided. The tightening rod 4 is inserted into the first long grooves 72 and 72. In order to facilitate plastic deformation of the first long groove 72 on the vehicle body rear side of the first long groove 72, a third groove having substantially the same length as the first long groove 72 is formed along the first long groove 72. A long groove 73 is formed. The position of the pin 71 is not limited to the central axis 112 of the outer column 11, and may be on the rear side of the vehicle body with respect to the rear ends of the telescopic adjustment long grooves 16 and 17.

  When the vehicle body collides in a state where the distance bracket 13 of the outer column 11 is firmly clamped and clamped to the vehicle body mounting bracket 3 via the first swing friction plates 7, 7, the driver uses the inertial force to drive the steering wheel 102. Collide with. Then, an impact force to the front side of the vehicle body acts on the tilt adjusting long grooves 35 and 36 via the outer column 11 and the tightening rod 4. Then, the first long groove 72 is plastically deformed to the third long groove 73 side by a large impact force acting on the tightening rod 4 toward the rear side of the vehicle body. As a result, the pressure angle at the contact position between the tightening rod 4 and the first long groove 72 becomes large, and it becomes difficult for the tightening rod 4 to move along the first long groove 72.

  Therefore, the outer column 11 does not start moving from the vehicle body mounting bracket 3 to the vehicle body front side against the tightening force due to the impact load applied to the vehicle body front side at the time of the secondary collision. Further, the tilt adjusting long grooves 35 and 36 are formed so as to be inclined to the rear side of the vehicle body by an inclination angle α with respect to a plane 116 orthogonal to a straight line 115 connecting the center of the pivot pin 22 and the center of the clamping rod 4. Yes. Therefore, even if an impact force directed to the upper side of the vehicle body is input to the outer column 11, the outer column 11 is disposed on the rear side of the vehicle body in the column axial direction against the collapse load in the column axial direction toward the front side of the vehicle body that acts simultaneously. The rear column must be retreated, the outer column 11 can be prevented from moving upward, and the airbag can effectively catch the driver.

  Next, Example 11 of the present invention will be described. FIG. 27 is an enlarged front view showing the vicinity of the vehicle body mounting bracket of the steering device according to the eleventh embodiment of the present invention, and is an enlarged front view showing a state where the outer column is moved to the vehicle body lower side moving end in the tilt direction. FIG. 28 is an enlarged front view showing a state where the outer column is moved to an intermediate position in the tilt direction in FIG. In the following description, only structural parts different from the above-described embodiment will be described, and redundant description will be omitted. Further, the same parts will be described with the same numbers. Example 11 is an example in which the second long groove is formed to be inclined with respect to a straight line connecting the second swing support portion and the tightening rod.

  As shown in FIGS. 27 to 28, tilt adjustment long grooves 35 and 36 are formed in the side plates 33 and 34 of the vehicle body mounting bracket 3. The tilt adjusting long grooves 35 and 36 are formed in an arc shape centered on the pivot pin. The round rod-shaped fastening rod 4 is inserted from the near side perpendicular to the paper surface of FIG. 27 through the tilt adjusting long grooves 35 and 36.

  On the outer surfaces of the side plates 33 and 34 of the vehicle body mounting bracket 3, second swing friction plates 87 and 87 are supported by pins (second swing support portions) 871 and 871 so as to be swingable. The pin 871 is disposed on the vehicle body upper side than the upper ends of the tilt adjusting long grooves 35 and 36. The second oscillating friction plate 87 of the eleventh embodiment is a thin plate in which the side 873 on the front side of the vehicle body is linear and the side 874 on the rear side of the vehicle body is formed in an arc shape convex to the rear side of the vehicle body. The second rocking friction plate 87 is formed with a second long groove 872, and the second long groove 872 is formed so as to be inclined toward the rear side of the vehicle body with respect to a straight line connecting the pin 871 and the fastening rod 4. ing. The tightening rod 4 is inserted into the second long groove 872.

  FIG. 27 shows the vehicle body lower side moving end in the tilt direction of the outer column 11. When the outer column 11 is moved to the upper side of the vehicle body in the tilt direction (upper side in FIG. 27) from this state, as shown in FIG. 28, the second rocking friction plates 87 and 87 are counterclockwise pushed by the tightening rod 4. Rocks. The tightening rod 4 moves along the second long groove 872 in a direction approaching the pin 871, and the movement along the tilt adjusting long grooves 35 and 36 of the tightening rod 4 and the rocking motion of the second rocking friction plates 87 and 87. Absorbs the difference in trajectory. That is, even if the second long groove 872 is not formed along the straight line connecting the pin 871 and the tightening rod 4, the movement along the tilt adjusting long grooves 35 and 36 of the tightening rod 4 and the second swing friction plate The difference between the trajectories of the swing motions 87 and 87 can be absorbed.

  Next, a twelfth embodiment of the present invention will be described. FIG. 29 is an enlarged front view showing a state in which the outer column is moved to the vehicle body front side moving end in the telescopic direction in the steering device according to the twelfth embodiment of the present invention, and is an enlarged front view in which the vehicle body mounting bracket is omitted. FIG. 30 is an enlarged front view showing a state where the outer column is moved to an intermediate position in the telescopic direction in FIG. In the following description, only structural parts different from the above-described embodiment will be described, and redundant description will be omitted. Further, the same parts will be described with the same numbers. Example 12 is an example in which the first long groove is formed to be inclined with respect to a straight line connecting the first swing support portion and the tightening rod.

  As shown in FIGS. 29 to 30, the distance bracket 13 is formed with telescopic adjustment long grooves 16 and 17 extending parallel to the central axis 112 of the outer column 11 on the lower side of the vehicle body than the central axis 112 of the outer column 11. Has been. The round rod-shaped fastening rod 4 is inserted from the front side perpendicular to the paper surface of FIG. 29 through the telescopic adjustment long grooves 16 and 17.

  On the outer peripheral surface of the outer column 11, first swing friction plates 77 and 77 are swingably supported by pins (first swing support portions) 771 on the left and right sides of the outer column 11 in the vehicle width direction. Yes. The first swing friction plates 77 and 77 are sandwiched between the inner side surface of the side plate of the vehicle body mounting bracket 3 and the side surface of the distance bracket 13.

  The pin 771 is disposed on the vehicle body upper side than the telescopic adjustment long grooves 16 and 17. The first oscillating friction plate 77 of the twelfth embodiment is a thin plate in which a side 773 on the front side of the vehicle body is a circular arc convex toward the front side of the vehicle body, and a side 774 on the rear side of the vehicle body is formed in a straight line. The first rocking friction plate 77 is formed with a first long groove 772, and the first long groove 772 is formed so as to be inclined forward of the vehicle body with respect to a straight line connecting the pin 771 and the fastening rod 4. Yes. The tightening rod 4 is inserted into the first long groove 772.

  Therefore, when the outer column 11 is moved to the rear side of the vehicle body in the telescopic direction (the right side in FIG. 29), the first swing friction plates 77 and 77 are swung in the clockwise direction by being pushed by the tightening rod 4. The clamping rod 4 moves along the first long groove 772 in a direction away from the pin 771, and absorbs the difference between the linear movement of the clamping rod 4 and the locus of the swinging motion of the first swinging friction plates 77 and 77. That is, even if the first long groove 772 is not formed along the straight line connecting the pin 771 and the tightening rod 4, the movement of the tightening rod 4 along the telescopic adjustment long grooves 16, 17 and the first swing friction plate The difference between the trajectories of the swing motions 77 and 77 can be absorbed.

  In the above embodiment, the first swing friction plate and the second swing friction plate are formed on both the left and right sides in the vehicle width direction, but may be formed only on one side in the vehicle width direction. In the above embodiment, an example in which the inner column 10 is applied to a steering device in which the inner column 10 is disposed on the front side of the vehicle body and the outer column 11 is disposed on the rear side of the vehicle body has been described. You may apply to the steering device arrange | positioned at the front side. Further, in order to increase the frictional force of the first and second oscillating friction plates, it is possible to form file-like irregularities on the surface of the friction plate, or to apply a coating or plating process with a large friction coefficient. Good.

DESCRIPTION OF SYMBOLS 101 Column 102 Steering wheel 103 Steering shaft 103A Upper steering shaft 103B Lower steering shaft 104 Universal joint 105 Intermediate shaft 105a Middle inner shaft 105b Middle outer shaft 106 Universal joint 107 Steering gear 108 Tie rod 109 Steering wheel 10 Inner column 11 Outer column 111 Inner circumference Surface 112 central axis 113 outer peripheral surface 114 arc 115 straight line 116 orthogonal plane 12 slit 13 distance bracket 14, 15 side surface 16, 17 telescopic adjustment long groove 21 lower bracket 22 pivot pin 3 vehicle body mounting bracket 32 upper plate 33, 34 side plate 331 , 341 Inner side 332, 342 Outer side 35, 36 Tilt adjustment long groove 4 Tighten Rod 41 Operation lever 42 Nut 5 First swing friction plate 51 Pin (first swing support part)
52 1st long groove 6 2nd rocking | fluctuation friction board 61 pin (2nd rocking | fluctuation support part)
62 second long groove 7 first swing friction plate 71 pin (first swing support portion)
72 First long groove 73 Third long groove 74 Side of vehicle body rear side 75 Common normal 76 Movement direction of tightening rod 4 77 First swing friction plate 771 Pin (first swing support portion)
772 First long groove 773 Car body front side 774 Car body rear side 8 Second rocking friction plate 81 Pin (second rocking support)
82 Second long groove 83 Fourth long groove 84 Side on the rear side of the vehicle body 85 Common normal line 86 Movement direction of the clamping rod 4 87 Second rocking friction plate 871 Pin (second rocking support part)
872 Second long groove 873 Side on the front side of the vehicle body 874 Side on the rear side of the vehicle body 9 First swing friction plate 91 Pin (first swing support portion)
92 First long groove 93 Third long groove 94 Side on the rear side of the vehicle body 95 Side on the front side of the vehicle body 96 Notch portion 97 Tangent line

Claims (17)

Body mounting bracket that can be mounted on the body,
A column in which the telescopic position is supported by the vehicle body mounting bracket so as to be adjustable, and a steering shaft on which a steering wheel is mounted is pivotally supported,
Telescopic adjustment long groove formed in the column in the telescopic position adjustment direction,
A through hole formed in a side plate of the vehicle body mounting bracket;
A first oscillating friction plate disposed on the outside of the column and supported on the column by a first oscillating support portion;
In order to clamp the column to the vehicle body mounting bracket at a desired telescopic position, a clamping rod is inserted through the telescopic adjustment long groove and through hole and tightens the column to the vehicle body mounting bracket via the first swing friction plate. ,
A steering apparatus comprising a first long groove formed in the first rocking friction plate and into which the tightening rod is inserted. The steering apparatus according to claim 1, wherein
The steering apparatus according to claim 1, wherein the first long groove is formed long along a straight line connecting the first swing support portion and the tightening rod. The steering apparatus according to claim 2, wherein
The first rocking friction plate includes a third long groove having substantially the same length as the first long groove along the first long groove in order to facilitate plastic deformation of the first long groove during a secondary collision. A steering apparatus characterized in that is formed. In the steering apparatus according to claim 3,
The steering apparatus according to claim 1, wherein the first long groove and the third long groove are formed in an arc shape. In the steering apparatus according to claim 3,
A steering device, wherein a notch is formed at an end of the first long groove. The steering apparatus according to claim 1, wherein
The steering apparatus according to claim 1, wherein the first long groove is formed to be inclined with respect to a straight line connecting the first swing support portion and the tightening rod. The steering apparatus according to claim 2, wherein
A second oscillating friction plate supported by the side plate of the vehicle body mounting bracket so as to be swingable by a second swing support portion and fastened to the vehicle body mounting bracket by the tightening rod;
A second long groove formed on the second rocking friction plate and formed long along a straight line connecting the second rocking support portion and the tightening rod and having the tightening rod inserted therethrough is provided. Steering device. The steering apparatus according to claim 7, wherein
The first rocking friction plate includes a third long groove having substantially the same length as the first long groove along the first long groove in order to facilitate plastic deformation of the first long groove during a secondary collision. Formed,
The second rocking friction plate includes a fourth long groove having substantially the same length as the second long groove along the second long groove so that the second long groove is easily plastically deformed at the time of a secondary collision. A steering apparatus characterized in that is formed. The steering apparatus according to claim 8, wherein
The steering device according to claim 1, wherein the first long groove, the third long groove, the second long groove, and the fourth long groove are formed in an arc shape. The steering apparatus according to claim 8, wherein
A steering apparatus, wherein notches are formed at ends of the first long groove and the second long groove. Body mounting bracket that can be mounted on the body,
A column in which the tilt position is supported by the body mounting bracket so as to be adjustable, and a steering shaft on which a steering wheel is mounted is pivotally supported.
A through hole formed in the column,
A long groove for tilt adjustment formed in the side plate of the vehicle body mounting bracket,
A second oscillating friction plate supported by the second oscillating support portion on the inner side surface of the side plate of the vehicle body mounting bracket or on the outer side surface of the side plate of the vehicle body mounting bracket;
In order to clamp the column to the vehicle body mounting bracket at a desired tilt position, a clamping rod is inserted through the through hole and the tilt adjusting long groove and tightens the column to the vehicle body mounting bracket via the second swing friction plate. ,
A steering apparatus comprising a second long groove formed in the second rocking friction plate and into which the tightening rod is inserted. The steering apparatus according to claim 11, wherein
The steering apparatus according to claim 1, wherein the second long groove is formed long along a straight line connecting the second swing support portion and the tightening rod. The steering apparatus according to claim 12, wherein
The second rocking friction plate includes a fourth long groove having substantially the same length as the second long groove along the second long groove so that the second long groove is easily plastically deformed at the time of a secondary collision. A steering apparatus characterized in that is formed. The steering apparatus according to claim 13, wherein
The steering apparatus according to claim 2, wherein the second long groove and the fourth long groove are formed in an arc shape. The steering apparatus according to claim 13, wherein
A steering apparatus, wherein a notch is formed at an end of the second long groove. The steering apparatus according to claim 11, wherein
The steering apparatus according to claim 1, wherein the second long groove is formed to be inclined with respect to a straight line connecting the second swing support portion and the tightening rod. The steering apparatus according to any one of claims 1 to 16,
The steering apparatus according to claim 1, wherein the tilt adjusting long groove is formed to be inclined rearward of the vehicle body with respect to a plane orthogonal to a straight line connecting the pivot center of the column and the center of the clamping rod.

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