JP2015003536A - Steering device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a steering device in variation in a control force of a control lever during tilt adjustment can be suppressed, and a rigidity in a tilt direction at the time of secondary collision can be assured.SOLUTION: A slit 38, which extends in a direction Z crossing a tilt direction Y, is provided in first side plates 28, 29 of a tilt bracket 21 which have a long hole 36 for tilt. a fitted part 39 of a fitted member (friction plate unit 41 for tilt) is fitted into the slit 38 with a slight gap G therebetween. At the time of secondary collision of a vehicle (see Fig. 6(b)), the fitted part 39 is sandwiched between a pair of opposite marginal parts 381, 382 of the slit 38, whereby rigidity in the tilt direction Y of the first side plates 28, 29 can be increased.

Description

  The present invention relates to a steering device.

  A steering device has been proposed in which the column side bracket is pressed against the vehicle body side bracket via a multi-plate friction engagement mechanism at the time of tilt tightening, and the vehicle body side bracket is detached from the column side bracket at the time of a secondary collision (for example, a patent). Reference 1).

Japanese Unexamined Patent Publication No. 2000000814837

  By the way, as a vehicle body side bracket, the thing provided with a pair of side plate extended from the top plate and the top plate is common. The pair of side plates are elastically deformed with an end on the top plate side as a fulcrum. Therefore, in the side plate, the amount of elastic deformation differs between a portion near the top plate and a portion far from the top plate. Therefore, the operating force of the operating lever required to elastically deform the side plate by a predetermined dimension varies depending on the tilt position.

Therefore, the side plate is provided with a notch at a position close to the top plate so that the entire side plate can be easily bent, thereby maintaining a constant operating force of the operating lever required to elastically deform the side plate by a predetermined dimension. Can be considered.
However, if a large load is applied upward in the tilt direction at the time of the secondary collision of the vehicle, the side plate having the slit may be deformed, and the rigidity of the steering device may be reduced.

  An object of the present invention is to provide a steering device that can suppress variations in operating force of an operating lever during tilt adjustment and can ensure rigidity in the tilt direction during a secondary collision.

  In order to achieve the object, the invention of claim 1 includes a top plate (24) held by a vehicle body side member (18) and a pair of first side plates (28, 29) extended from the top plate. A tilt bracket (21) having a groove shape, a cylindrical steering column (8) rotatably supporting the steering shaft (4), and inner surfaces of the pair of first side plates fixed to the steering column A column bracket (22) having a pair of second side plates (30, 31) along each of the first side plates, a tilting long hole (36) of both first side plates, and a tightening shaft insertion hole (37) of both second side plates. A tightening shaft (32) to be inserted, an operation lever (33) rotated around the central axis (C1) of the tightening shaft, and a tightening member (50, 54) supported by the tightening shaft. The operation lever rotates in the direction of the tightening axis of the tightening member (K And a movement converting mechanism (34) that converts the movement into a movement of the first side plate by the fastening member, and a mounted portion attached to the first side plate. A mounted member (41), and at least one first side plate extends above the tilt slot (Y) and extends in a direction crossing the tilt direction, and has a slit (one end opened). 38), and the attached portion is attached to the slit with a gap (G), and the slit is deformed due to a secondary collision of the vehicle, and a pair of slits is formed. Provided is a steering device configured such that the attached portion is sandwiched between opposing edges (381, 382).

  According to a second aspect of the present invention, the lock mechanism includes a friction engagement mechanism (35) interposed between the first side plate in which the slit is formed and the tightening member. A tilting friction plate (40) interposed between the first side plate in which the slit is formed and the fastening member, and the mounting portion provided at an end of the tilting friction plate. A tilt friction plate unit (41) as a member, and an interposition member (53) interposed between the tilt friction plate and the first side plate in which the slit is formed may be included.

According to a third aspect of the present invention, the attached portion may be integrally formed with the tilting friction plate and a single material.
According to a fourth aspect of the present invention, the mounted portion includes an orthogonal plate portion (58) bent orthogonally from the tilt friction plate, and an orthogonal plate portion extending from the orthogonal plate portion and bent into an annular shape. And a plate piece portion (59) which is abutted against the plate portion and forms a closed cross-section structure (SB) in cooperation with the orthogonal plate portion.

  According to the first aspect of the present invention, the first side plate is provided with the slit extending in the direction crossing the tilt direction, and the attached portion of the attached member is attached with the gap provided in the slit. Therefore, the slit works to suppress variations in the tightening rigidity between the upper and lower portions of the first side plate in the tilt direction during tilt adjustment, thereby suppressing variations in operating force of the operating lever due to differences in tilt position. Can do. Further, in the event of a secondary collision of the vehicle, the attached portion of the attached member is sandwiched between a pair of opposing edge portions of the slit of the first side plate, thereby improving the rigidity in the tilt direction of the first side plate, As a result, the rigidity is improved.

According to the invention of claim 2, since the element (the friction plate unit for tilting) of the friction engagement mechanism also serves as the attached member, the structure can be simplified.
According to the invention of claim 3, an inexpensive friction engagement mechanism can be obtained.
According to the fourth aspect of the present invention, the structural strength of the attached portion can be increased by using the plate material integrated with the tilting friction plate.

1 is a partially cutaway schematic side view of a steering device according to an embodiment of the present invention, showing a schematic configuration of the steering device. It is sectional drawing which follows the II-II line | wire of FIG. It is the schematic of the 1st side plate of a tilt bracket. It is a perspective view of the friction plate unit for tilt of a friction engagement mechanism. FIG. 4 is a development view of the friction plate unit for tilt, and corresponds to a plan view of an intermediate for manufacturing the friction plate unit for tilt. It is the schematic which shows the positional relationship of the slit of the 1st side plate of a tilt bracket, and the to-be-attached part attached to the slit. (A) shows a normal state such as tilt adjustment, and (b) shows a secondary collision state.

FIG. 1 is a schematic diagram showing a schematic configuration of a position adjustment type steering apparatus according to an embodiment of the present invention. Referring to FIG. 1, a steering device 1 includes a steering member 2 such as a steering wheel, and a steering mechanism 3 that steers steered wheels (not shown) in conjunction with the steering of the steering member 2. As the steering mechanism 3, for example, a rack and pinion mechanism is used.
The steering member 2 and the steering mechanism 3 are mechanically connected via a steering shaft 4, an intermediate shaft 5, and the like. The rotation of the steering member 2 is transmitted to the steering mechanism 3 via the steering shaft 4, the intermediate shaft 5, and the like. Further, the rotation transmitted to the steering mechanism 3 is converted into an axial movement of a rack shaft (not shown). Thereby, a steered wheel is steered.

  The steering shaft 4 has a cylindrical upper shaft 6 and a lower shaft 7 which are fitted so as to be able to slide relative to each other by, for example, spline fitting or serration fitting. The steering member 2 is connected to one end of the upper shaft 6. Further, the steering shaft 4 can be expanded and contracted in the axial direction X thereof. The steering shaft 4 is inserted into a cylindrical steering column 8 and is rotatably supported by the steering column 8 via a plurality of bearings 9 and 10.

The steering column 8 has an upper jacket 11 that is an outer jacket and a lower jacket 12 that is an inner jacket. Both jackets 11 and 12 are fitted so as to be slidable relative to each other in the axial direction X. Thereby, the steering column 8 can be expanded and contracted in the axial direction, and telescopic adjustment described later can be performed.
The upper jacket 11 rotatably supports the upper shaft 6 via the bearing 9. Further, the upper jacket 11 is connected to the upper shaft 6 via the bearing 9 so as to be able to move in the axial direction X of the steering shaft 4.

A lower column bracket 13 is fixed to the outer periphery of the lower jacket 12. The lower column bracket 13 is rotatably supported by a lower fixing bracket 15 fixed to the vehicle body side member 14 via a tilt center shaft 16. The steering column 8 and the steering shaft 4 can be rotated around the tilt center axis 16.
The position of the steering member 2 in the height direction can be adjusted by rotating the steering shaft 4 and the steering column 8 around the tilt center axis 16 (so-called tilt adjustment). Further, by extending and retracting the steering shaft 4 and the steering column 8 in the axial direction X, the position in the axial direction and the position in the height direction of the steering member 2 can be adjusted (so-called telescopic adjustment). The steering device 1 includes a lock mechanism 17 for achieving a tilt lock and a telescopic lock in order to fix the position of the steering member 2 whose height has been adjusted.

Further, the steering device 1 includes an upper fixing bracket 19 fixed to the vehicle body side member 18 (for example, a cross member), a tilt bracket 21 suspended from the upper fixing bracket 19 via a suspension mechanism 20, and the upper jacket 11. The upper column bracket 22 is fixed to the upper column bracket 22.
By the upper column bracket 22 being fastened and fixed to the tilt bracket 21 by the lock mechanism 17, tilt lock and telescopic lock are achieved. As a result, the position of the jacket 8 is fixed with respect to the vehicle body side member 18, and the position of the steering member 2 is fixed.

The suspension mechanism 20 is provided on the upper fixing bracket 19 and has a long groove 23 formed of a through groove extending in a column moving direction (corresponding to a direction parallel to the axial direction X) at the time of a secondary collision, and a top plate 24 of the tilt bracket 21. A suspension bolt 27 is provided which is inserted into a bolt insertion hole 25 provided in the nut and is coupled to a nut 26.
Although not shown in FIG. 1, the upper fixing bracket 19 and the top plate 24 of the tilt bracket 21 are connected via a resin pin 47 (see FIG. 2) that is broken at the time of a secondary collision of the vehicle. When the resin pin 47 breaks at the time of the secondary collision, the tilt bracket 21, the upper column bracket 22, the upper jacket 11, and the like that have been detached from the predetermined position of the upper fixing bracket 19 move in the column moving direction.

  Referring to FIG. 1 again, the lock mechanism 17 includes a pair of first side plates 28 and 29 (only one first side plate 28 is shown in FIG. 1) of the upper fixing bracket 19 and a pair of upper column brackets 22. A fastening shaft 32 penetrating through the second side plates 30 and 31 (only one second side plate 31 is shown in FIG. 1), an operation lever 33 rotatable around the central axis C1 of the fastening shaft 32, and A cam mechanism 34 as a motion conversion mechanism for tightening the first side plates 28, 29 to the second side plates 30, 31 and a friction engagement mechanism 35 are provided according to the rotation operation of the operation lever 33.

In the first side plates 28 and 29, a tilting slot 36 extending in the tilt direction Y through which the fastening shaft 32 is inserted (arranged behind the tilt slot 42 of the tilt friction plate 40 described later in FIG. 1). Is formed). The second side plates 30 and 31 are formed with telescopic elongated holes 37 through which the fastening shaft 32 is inserted and extending in parallel with the axial direction X.
In addition, a slit 38 extending in a direction intersecting with the tilt direction Y is formed in at least one of the first side plates 28 and 29 (both first side plates 28 and 29 in the present embodiment). The slit 38 extends generally from the end of the first side plates 28 and 29 on the vehicle rear side (steering member 2 side) toward the front of the vehicle.

  As shown in FIG. 2, which is a schematic cross-sectional view taken along the line II-II in FIGS. 1 and 1, a pair of friction engagement mechanisms 35 having a common specification are provided and arranged symmetrically. . Each friction engagement mechanism 35 is a mounted member having a mounted portion 39 attached to the slit 38 of the corresponding first side plate 28, 29 and a tilt friction plate 40 extending from the mounted portion 39. A tilting friction plate unit 41 is provided. The tilting friction plate 40 has a tilting long hole 42 extending in the tilting direction Y and through which the fastening shaft 32 is inserted.

Referring to FIG. 2, upper column bracket 22 is a groove-shaped member that opens upward, and is formed symmetrically. That is, the upper column bracket 22 includes a pair of second side plates 30 and 31 each having one end fixed to the outer periphery of the upper jacket 11, and a connecting plate 43 that connects between the other ends of the pair of second side plates 30 and 31. It has.
The tilt bracket 21 is a generally groove-shaped member that opens downward, and includes a top plate 24 and a pair of first side plates 28 and 29 and is formed symmetrically. The side plates 30 and 31 of the upper column bracket 22 are along the inner side surfaces 28 a and 29 a of the corresponding side plates 28 and 29 of the tilt bracket 21.

The upper fixing bracket 19 includes a main plate 44 having a pair of long grooves 23 extending in a column moving direction (a direction orthogonal to the paper surface), and a pair of mounting plates 45 extending outward from the main plate 44. . The upper fixing bracket 19 is fixed to the vehicle body side member 18 by the fixing screws 46 inserted through the mounting plates 45 being screwed into the vehicle body side member 18.
A pair of suspension mechanisms 20 are provided, and the suspension bolts 27 of the suspension mechanisms 20 are respectively screwed into the nuts 26 through the corresponding long grooves 23 and bolt insertion holes 25.

  A resin pin 47 is inserted into an insertion hole provided in the main plate 44 of the upper fixing bracket 19 and the top plate 24 of the tilt bracket 21, and the tilt bracket 21 is attached to the predetermined portion of the upper fixing bracket 19 by the resin pin 47. Fixed in position. At the time of the secondary collision of the vehicle, the resin pin 47 is broken, so that the tilt bracket 21 released from the predetermined position of the upper fixing bracket 19 moves in the column moving direction (direction perpendicular to the paper surface).

The lock mechanism 17 is fitted to the outer periphery of the tightening shaft 32, the nut 48 that is screwed to the screw portion formed at one end of the tightening shaft 32, and the vicinity of the other end of the tightening shaft 32. A cam mechanism 34 (motion conversion mechanism) including a first cam 49 and a second cam 50 (tightening member) is provided.
A head 321 is provided at the other end of the fastening shaft 32. The head 321 of the fastening shaft 32 and the first cam 49 are coupled to the operation lever 33 so as to be integrally rotatable. A sleeve 51 is connected to the outer periphery of the intermediate portion in the axial direction of the fastening shaft 32 so as to be integrally rotatable by spline fitting. A pressing portion 52 formed of a cam-like protrusion is provided on the outer periphery of the intermediate portion in the axial direction of the sleeve 51 so as to be integrally rotatable. The pressing portion 52 can press the lower jacket 12 through the opening 11 a provided in the upper jacket 11.

  That is, when the sleeve 51 is rotated by the operation of the operation lever 33, the pressing portion 52 pushes up the lower jacket 12 (inner tube). As a result, the lower jacket 12 is pressed in the radial direction against the upper jacket 11 (outer tube), and the backlash in the radial direction of the lower jacket 12 with respect to the upper jacket 11 is suppressed.

  The first cam 49 and the second cam 50 of the cam mechanism 34 form cam protrusions on their contact surfaces. Along with the relative rotation of the first cam 49 and the second cam 50, the first cam 49 moves the second cam 50 in the tightening axis direction K1 (the axial direction of the tightening shaft 32), and the second cam The first side plates 28 and 29 of the tilt bracket 21 are connected to the second column 22 of the upper column bracket 22 between 50 (clamping member) and a first interposed member 54 (clamping member) described later on one end side of the clamping shaft 32. It functions to fasten to the side plates 30 and 31.

  The second cam 50 (clamping member) has an annular first portion 501 and a boss-like second portion 502 extending in the axial direction from the inner diameter portion of the first portion 501. Between the first portion 501 of the second cam 50 and the outer surface 28b of one of the first side plates 28, there is a friction plate 40 for a tilt of one friction engagement mechanism 35 and an annular washer 53 as an interposed member. Intervene. The tilting friction plate 40 is disposed along the first portion 501 of the second cam 50 so as to be capable of frictional engagement. The washer 53 is interposed between the tilting friction plate 40 and one of the first side plates 28.

  The second portion 50 of the second cam 50 includes a tilting long hole 36 in one of the first side plates 28 of the tilt bracket 21, a tilting long hole 42 in the tilting friction plate 40, a washer 53, and the upper column bracket 22. Is inserted into the telescopic slot 37 of the second side plate 30 of the second side plate 30. The second portion 502 of the second cam 50 is fitted in the long holes 36, 42, 37 so as to be able to move along with the washer 53 along the direction in which the long holes 36, 42, 37 extend. Further, the rotation of the second portion 502 is regulated by the long slot for tilting 36 by forming a two-sided width or the like in a portion that fits into the long slot for tilting 36 of the first side plate 28.

Between the nut 48 screwed into one end of the fastening shaft 32 and the other first side plate 29 of the tilt bracket 21, a first interposed member 54 (tightening member) and a second interposed member 55 are interposed. doing. The first interposed member 54 includes an annular first portion 541 and a boss-like second portion 542 extending in the axial direction from the inner diameter portion of the first portion 541.
Between the first portion 541 of the first interposing member 54 and the outer side surface 29b of the other first side plate 29 of the tilt bracket 21, the tilt friction plate 40 of the other friction engagement mechanism 35 and the annular member as the interposing member are provided. The washer 53 is interposed. The tilting friction plate 40 is fitted along the first portion 541 of the first interposed member 54 so as to be capable of frictional engagement. The washer 53 is interposed between the tilt friction plate 40 and the other first side plate 29.

  The second portion 542 of the first interposing member 54 includes a tilt long hole 36 in the other first side plate 29 of the tilt bracket 21, a tilt long hole 42 in the tilt friction plate 40, a washer 53, and an upper column bracket. 22 is inserted into the telescopic slot 37 of the other second side plate 31. The second portion 542 of the first interposed member 54 is fitted to each of the long holes 36, 42, and 37 so as to be able to move along with the washer 53 along the direction in which the long holes 36, 42, and 37 extend. Further, the rotation of the second portion 542 is restricted by the long slot for tilting 36 by forming a two-sided width or the like in the portion of the first side plate 29 that fits into the long slot for tilting 36.

  The second interposed member 55 is interposed between the thrust washer 56 interposed between the first portion 541 of the first interposed member 54 and the nut 48, and between the thrust washer 56 and the first portion 541 of the first interposed member 54. And a needle roller bearing 57 for thrust. Due to the action of the second interposed member 55 including the needle roller bearing 57, the nut 48 can rotate smoothly together with the tightening shaft 32.

  As the operation lever 33 rotates, the first cam 49 rotates relative to the second cam 50, whereby the second cam 50 is moved in the tightening axis direction K1, and the second cam 50 (tightening member). The first portion 501 of the tilt bracket 21 and the first portion 541 of the first interposed member 54 (clamping member) respectively correspond to the corresponding first side plate 28 of the tilt bracket 21 via the corresponding friction plate 40 for the tilt and the washer 53, respectively. 29 is clamped and tightened. Thereby, the first side plates 28 and 29 of the tilt bracket 21 are pressed against the corresponding second side plates 30 and 31 of the upper column bracket 22 to achieve tilt lock and telescopic lock.

  As shown in FIG. 3, the slits 38 provided in the first side plates 28 and 29 of the tilt bracket 21 extend in a direction Z that intersects the tilt direction Y. The attached portion 39 of the friction plate unit 41 for tilt shown in FIG. 4 is inserted and held between a pair of opposing edge portions 381 and 382 of the slit 38. At the opening end of the slit 38, a retaining protrusion 383 that protrudes from at least one of the edges 381 and 382 is formed. The retaining projection 383 functions to prevent the attached portion 39 of the tilting friction plate unit 41 inserted into the slit 38 from being pulled out from the opening end of the slit 38.

  Referring to FIG. 4, the attached portion 39 of the tilt friction plate unit 41 and the tilt friction plate 40 are integrally formed of a single material. Specifically, the mounted portion 39 is orthogonally bent from the tilting friction plate 40 in an orthogonal shape, and is extended from the orthogonal plate portion 58 and bent into an annular shape so as to abut against the orthogonal plate portion 58. And a pair of plate piece portions 59 that form a hollow structure SB having a closed cross section in cooperation with the orthogonal plate portion 58.

  FIG. 5 shows a manufacturing intermediate 41 </ b> M of the tilting friction plate unit 41. In the intermediate plate for manufacturing 41M, the orthogonal plate portion 58M at the stage before bending is continuous on the same plane as the tilting friction plate 40 via the planned bending line BL1. Each plate piece part 59M in the stage before bending is continuous on the same plane on both sides of the orthogonal plate part 58M in the stage before folding via the planned folding line BL2.

As shown in FIG. 6 (a), in the normal state (when the vehicle is not in a secondary collision and corresponds to the tilt lock state or the tilt lock release state for tilt adjustment), the attached portion 39 Is attached to the slit 38 with a minute gap G.
As shown in FIG. 6B, upon a secondary collision of the vehicle, the slit 38 is deformed by receiving a thrust force (indicated by a white arrow) upward in the tilt direction Y1, and a pair of the slits 38 oppose each other. The attached portion 39 is sandwiched between the edge portions 381 and 382.

  According to the present embodiment, the first side plates 28 and 29 of the tilt bracket 21 are provided with the slits 38 extending in the direction Z intersecting with the tilt direction Y, and the attached member (the friction plate unit 41 for tilting) is provided in the slit 38. ) To be mounted 39 with a small gap G. Therefore, the slit 38 prevents the tightening rigidity from varying between the upper part and the lower part in the tilt direction Y of the first side plates 28 and 29 during the tilt adjustment, and the operation force of the operation lever 33 against the difference in the tilt position. Can be suppressed. Further, since the gap G is provided, the tilting friction plate 40 can move in the left-right direction (tightening axis direction K1) when unlocking, so that a smooth tilt operation and telescopic operation can be performed. .

Further, at the time of the secondary collision of the vehicle, the mounted portion 39 of the mounted member (tilting friction plate unit 41) is sandwiched between the pair of opposed edge portions 381, 382 of the slit 38 of the first side plates 28, 29. Thus, the rigidity in the tilt direction Y of the first side plates 28 and 29 is improved, and the rigidity as a whole is improved.
In addition, the friction engagement mechanism 35 is interposed between the first side plates 28 and 29 in which the slits 38 are formed and the corresponding fastening members (first cam 49 and first interposed member 54), and the friction plate 40 for tilt is interposed. And a tilting friction plate unit 41 as a mounted member including the mounted portion 39. Therefore, since the element (the friction plate unit 41 for tilting) of the friction engagement mechanism 35 also serves as the attached member, the structure can be simplified.

Further, since the attached portion 39 is integrally formed with the tilting friction plate 40 from a single material, an inexpensive friction engagement mechanism 35 can be obtained.
In addition, in the mounted portion 39, an orthogonal plate portion 58 bent orthogonally from the tilting friction plate 40, and a plate piece extending from the orthogonal plate portion 58 and bent into an annular shape and abutted against the orthogonal plate portion 58 Together with the part 59, a closed cross-section structure SB is formed. Therefore, when a plate material integral with the tilt friction plate 40 is used, even if a thin plate material is used, the structural strength of the attached portion 39 can be increased.

  The present invention is not limited to the above embodiment. For example, in the above-described embodiment, the slits 38 are formed in both the pair of side plates 28 and 29 of the tilt bracket 21, but either one of the slits 38 is abolished and only the other slit 38 is attached to the attached member ( The attached portion 39 of the tilting friction plate unit 41) may be attached. The direction in which the slit 38 extends (direction Z intersecting with the tilt direction Y) is not limited to the direction orthogonal to the tilt direction Y, and is the tilt direction Y that maintains the tightening rigidity during tilt adjustment uniformly. Any direction that intersects may be used.

Moreover, in the said embodiment, although the to-be-attached part 39 is hollow, the to-be-attached part 39 may be solid. Moreover, in the said embodiment, although the to-be-attached member is the friction plate unit 41 for a tilt, as long as it is a member attached to a slit, another thing may be sufficient.
In the embodiment, the washer 53 as an interposed member is interposed between the friction plate for tilt 40 and the first side plates 28 and 29 of the tilt bracket 21. On the other hand, instead of the washer 53, a telescopic friction plate (not shown) attached to the second side plates 30 and 31 of the upper column bracket 22 may be used as the interposed member.

  In addition, the present invention can be variously modified within the scope of the claims.

  DESCRIPTION OF SYMBOLS 1 ... Steering device, 2 ... Steering member, 3 ... Steering shaft, 8 ... Steering column, 11 ... Upper jacket, 12 ... Lower jacket, 16 ... Tilt center axis, 17 ... Lock mechanism, 18 ... Car body side member, 19 ... Upper Fixed bracket, 20 ... suspension mechanism, 21 ... tilt bracket, 22 ... upper column bracket, 23 ... long groove, 27 ... suspension bolt, 28, 29 ... first side plate, 30, 31 ... second side plate, 32 ... tightening Axis 33, operating lever 34, cam mechanism (motion conversion mechanism) 35, friction engagement mechanism 36, long hole for tilt 37, long hole for telescopic, 38, slit, 39, attached portion 40, Friction plate for tilt, 41... Friction plate unit for tilt (attached member), 42... Long hole for tilt, 49... First cam, 50. ... Washers (intervening members), 54 ... first interposing members (clamping members), 58 ... orthogonal plate portions, 59 ... plate pieces, C1 ... center axis, K1 ... clamping axial direction, G ... gap, SB ... structure Body, X ... axial direction, Y ... tilt direction, Y1 ... upward in the tilt direction

Claims (4)

A tilt bracket having a groove shape with a top plate held by the vehicle body side member and a pair of first side plates extending from the top plate;
A cylindrical steering column that rotatably supports the steering shaft;
A column bracket having a pair of second side plates fixed to the steering column and extending along inner surfaces of the pair of first side plates;
A tightening shaft that passes through the long slots for tilting of both first side plates and a tightening shaft insertion hole of both second side plates, an operating lever that is rotated around a central axis of the tightening shaft, and the tightening shaft And a motion conversion mechanism that converts the rotation of the operation lever into a motion in the tightening axis direction of the tightening member, and the first side plate is moved to the second side plate by the tightening member. A locking mechanism to tighten
A mounted member including a mounted portion attached to the first side plate,
At least one of the first side plates forms a slit that extends in a direction intersecting the tilt direction and is open at one end above the tilt long hole,
The attached portion is attached to the slit with a gap,
A steering device configured such that the slit is deformed in accordance with a secondary collision of the vehicle, and the attached portion is sandwiched between a pair of opposing edges of the slit. In Claim 1, the lock mechanism includes a friction engagement mechanism interposed between the first side plate in which the slit is formed and the fastening member,
The friction engagement mechanism includes a tilt friction plate interposed between the first side plate in which the slit is formed and the fastening member, and the attached portion provided at an end of the tilt friction plate. A steering device comprising: a friction plate unit for tilt as a member to be mounted, and an interposition member interposed between the friction plate for tilt and the first side plate in which the slit is formed.   3. The steering apparatus according to claim 2, wherein the attached portion is integrally formed with the tilt friction plate from a single material.   In Claim 3, the said to-be-attached part is orthogonally bent from the said friction plate for tilts, the orthogonal plate part extended from the said orthogonal plate part, bend | folded cyclically | annularly, and is abutted on the said orthogonal plate part And a plate piece portion that forms a closed cross-section structure in cooperation with the orthogonal plate portion.

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