JP6198042B2 - Steering device - Google Patents

Description

  The present invention relates to a steering device.

When the vehicle hits an obstacle such as another vehicle, a secondary collision in which the driver hits the steering wheel (steering member) may occur following the primary collision at that time. In the steering device, various structures have been proposed in which a part of the steering column is detached from the vehicle body and moved in the column axial direction (front of the vehicle body) in order to absorb the impact at the time of the secondary collision.
For example, in the steering column support device of Patent Document 1, a pair of locking notches extending in parallel to the column axial direction is provided on the vehicle body side bracket fixed to the vehicle body (see FIG. 9 of Patent Document 1). . One locking capsule is fitted into each locking notch, and each locking capsule is positioned with respect to the vehicle body side bracket by a plurality of locking pins. And the column side bracket holding a steering wheel is connected with each latching capsule with the volt | bolt.

  At the time of a secondary collision, each of the locking capsules is released from the vehicle body side bracket due to the breaking of the plurality of locking pins, and moves along the locking notch together with the column side bracket. Thereby, the impact at the time of the secondary collision is absorbed.

JP 2012-121538 A

  A steering member such as a steering wheel may be provided with a horn switch. In the steering column support device of Patent Document 1, a configuration in which this switch is grounded via the column side bracket, the vehicle body side bracket, and the vehicle body is conceivable. In this configuration, the column side bracket is stable and stable in the event of a secondary collision while ensuring electrical conductivity (for grounding) between the column side bracket and the vehicle body side bracket, which are separate parts and relative to each other. It is preferable that smooth movement can be achieved. Further, it is more preferable that the cost related to this configuration can be reduced.

The present invention has been made under such a background, and in a configuration having a pair of members that move relative to each other for impact absorption at the time of a secondary collision, while ensuring electrical conductivity between these members, The main object is to provide a steering device capable of achieving stable and smooth relative movement of these members during a secondary collision.
Another object of the present invention is to provide a steering device capable of reducing the cost.

According to the first aspect of the present invention, there is connected an electrically conductive fixed bracket (23) fixed to the vehicle body (13) and an electrically conductive ground wire of a switch (89) for sounding a horn. A movable bracket (24) that is connected to the steering member (2) and is movable relative to the fixed bracket toward the downstream side in a predetermined movement direction along with the steering member during a secondary collision; An upstream slide member (78) having electrical conductivity and attached to the fixed bracket, which is inserted between the upstream portion (322) of the movable bracket and the fixed bracket in the moving direction. An upstream slide member that slides on the movable bracket only between the upstream portion and the fixed bracket at the time of a secondary collision; Provided in a portion of rubbing (46A) to said movable bracket in wood, conductive friction reducing material to reduce friction between the upstream sliding member and said movable bracket at a secondary collision and (100), conductive A downstream slide member (77) attached to the movable bracket and inserted between the downstream portion (321) of the movable bracket in the moving direction and the fixed bracket; during a secondary collision, seen including and a downstream sliding member rubbing the fixed bracket only in between the fixing bracket and the downstream portion, rubbing the fixed bracket in the downstream sliding member portion ( 45A), in order to reduce friction between the fixed bracket and the downstream slide member at the time of a secondary collision, Wherein the Kishirube conductive friction reducing material is provided, a steering system (1).

  According to a second aspect of the present invention, the upstream slide member is disposed between the upstream first portion (46) disposed between the upstream portion and the fixing bracket, and the upstream first portion. An upstream installation part (50) installed between the upstream second part (49) sandwiching the fixed bracket and the upstream edge of each of the upstream first part and the upstream second part in the moving direction. The steering device according to claim 1, wherein the steering device has a U-shaped cross section including

According to a third aspect of the present invention, the downstream slide member is disposed between the downstream first portion (45) disposed between the downstream portion and the fixing bracket, and the downstream first portion. A downstream construction part (47) constructed between the downstream second part (47) sandwiching the downstream part and the downstream edge of each of the downstream first part and the downstream second part in the movement direction ( 48) The steering device according to claim 1 or 2 , wherein the steering device has a U-shaped cross section including

  In addition, in the above, the numbers in parentheses represent reference numerals of corresponding components in the embodiments described later, but the scope of the claims is not limited by these reference numerals.

According to the first aspect of the present invention, the upstream slide member inserted between the upstream portion of the movable bracket and the fixed bracket and the portion that slides on the movable bracket in the upstream slide member at the time of a secondary collision are provided. With the conductive friction reducing material thus formed, it is possible to ensure electrical conductivity between the fixed bracket on the vehicle body side and the movable bracket on the steering member side.
Here, at the time of a secondary collision, the upstream slide member slides on the movable bracket only between the upstream portion of the movable bracket and the fixed bracket. Further, a conductive friction reducing material is provided on a portion of the upstream slide member that slides on the movable bracket. For this reason, the upstream slide member is unlikely to hinder the movement of the movable bracket (relative movement with respect to the fixed bracket) for absorbing the impact during the secondary collision.

In this way, stable and smooth relative movement between the fixed bracket and the movable bracket can be achieved at the time of a secondary collision while ensuring the electrical conductivity between the fixed bracket and the movable bracket .

Also, and the downstream sliding member inserted between the fixing bracket and the downstream portion of the movable bracket, the secondary collision on the downstream side slide conductivity provided in a portion rubbing the fixing bracket in member friction reducing material Thus, it is possible to ensure the electrical conductivity between the vehicle body side fixed bracket and the steering member side movable bracket. In other words, the electrical conductivity between the fixed bracket and the movable bracket is doubled by two energization paths, that is, an upstream slide member (including a conductive friction reducing material) and a downstream slide member (including a conductive friction reducing material). Therefore, it is possible to reliably ensure the electrical conductivity between the fixed bracket and the movable bracket.

  Here, at the time of a secondary collision, the downstream slide member slides on the fixed bracket only between the downstream portion of the movable bracket and the fixed bracket. Further, a conductive friction reducing material is provided on a portion of the downstream slide member that rubs against the fixed bracket. Therefore, the downstream slide member is unlikely to hinder the movement of the movable bracket (relative movement with respect to the fixed bracket) for absorbing the impact at the time of the secondary collision, like the upstream slide member.

In this way, stable and smooth relative movement between the fixed bracket and the movable bracket can be achieved at the time of a secondary collision while further ensuring the electrical conductivity between the fixed bracket and the movable bracket.
According to invention of Claim 2, an upstream slide member can be made into the simple shape which has a U-shaped cross section. Thereby, the assembly | attachment property of the upstream slide member in a steering device can be improved. Further, the cost of manufacturing the steering device can be reduced by the upstream slide member having a simple shape and improved assembling ability.
According to invention of Claim 3 , a downstream slide member can be made into the simple shape which has a U-shaped cross section. Thereby, the assembly | attachment property of the downstream slide member in a steering device can be improved. Further, the cost of manufacturing the steering device can be reduced by the downstream slide member having a simple shape and improved assemblability.

FIG. 1 is a schematic side view of a steering device 1 according to an embodiment of the present invention, and shows a schematic configuration of the steering device 1. FIG. 2 is a schematic cross-sectional view of the steering device 1 of FIG. 1 and shows a cross section taken along the line II-II of FIG. FIG. 3 is an exploded perspective view of the steering device 1 of FIG. FIG. 4 is a partially broken schematic plan view of the fixing bracket 23, the pair of suspension mechanisms T1 and T2, and the connection / release mechanism R1. FIG. 5 is a cross-sectional view in a connected state of the first plate 30 of the fixed bracket 23 and the second plate 32 of the movable bracket 24, and shows a cross-section in the front-rear direction including the axis of the pin 61. FIG. 6 is a cross-sectional view of the first plate 30 and the second plate 32 at the time of the secondary collision, and the second plate 32 is detached from the state of FIG. 5 to the downstream side in the predetermined moving direction Z1 due to the shearing of the pin 61. Shows the state. FIG. 7 is a cross-sectional view taken along the line VII-VII in FIG. FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. 2, and shows a cross section of the second plate 32 and the coupling / detaching mechanism R1. FIG. 9 shows an application of the downstream slide member 77 and the upstream slide member 78 according to the embodiment of the present invention in FIG. FIG. 10 shows an application of the downstream slide member 77 and the upstream slide member 78 according to the embodiment of the present invention in FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a schematic side view of a steering device 1 according to an embodiment of the present invention, and shows a schematic configuration of the steering device 1. The left side in FIG. 1 is the steering device 1 and the front side of the vehicle body (to which the steering device 1 is attached), and the right side in FIG. 1 is the steering device 1 and the rear side of the vehicle body. 1 is the upper side of the steering device 1 and the vehicle body, and the lower side in FIG. 1 is the lower side of the steering device 1 and the vehicle body.

  Referring to FIG. 1, a steering device 1 includes a steering shaft 3 that is connected to a steering member 2 such as a steering wheel and extends in the front-rear direction, an intermediate shaft 5 that is connected to the steering shaft 3 via a universal joint 4, A pinion shaft 7 connected to the intermediate shaft 5 through a universal joint 6, a rack shaft 8, and a steering column 15 are mainly provided. Note that at least a part of the steering member 2 is formed of a conductive material such as metal.

  A pinion 7 a is provided in the vicinity of the end (lower end) of the pinion shaft 7 and meshes with the rack 8 a of the rack shaft 8. A steering mechanism A1 is configured by a rack and pinion mechanism including the pinion shaft 7 and the rack shaft 8. The rack shaft 8 is supported by a housing 10 fixed to a vehicle body side member (a vehicle body itself or a member fixed to the vehicle body, the same applies hereinafter) 9. The rack shaft 8 is movable in the vehicle width direction that is the width direction of the vehicle (the direction orthogonal to the paper surface). Each end of the rack shaft 8 is connected to steered wheels (wheels) via tie rods and knuckle arms (not shown).

  The entire steering shaft 3 is formed of a conductive material such as steel. The steering shaft 3 includes, for example, an upper shaft 11 and a lower shaft 12 that are connected so as to be able to rotate together and to be relatively movable in the axial direction X1 by using, for example, spline coupling. The steering shaft 3 is rotatably supported by a steering column 15 fixed to the vehicle body side members 13 and 14 via metal bearings (upper bearing 75 and lower bearing 76).

  The steering column 15 includes a cylindrical upper jacket 16 and a lower jacket 17 that are fitted so as to be relatively movable in the axial direction X1 of the steering shaft 3, and a housing 18 that is connected to one end (lower end) of the lower jacket 17 in the axial direction X1. And. In the steering shaft 3, a midway portion between a front end portion (also a lower end portion) and a rear end portion (also an upper end portion) is accommodated in the steering column 15. In the steering column 15, at least the upper jacket 16 is formed of a conductive material such as metal. The housing 18 is connected to the lower shaft 12 via a lower bearing 76. The upper jacket 16 is connected to the upper shaft 11 via an upper bearing 75 and can move in the axial direction X1 along with the upper shaft 11. The upper jacket 16 is moved in the axial direction X1 with respect to the lower jacket 17. By making the relative movement, telescopic adjustment (telescopic adjustment) of the steering column 15 and the steering shaft 3 becomes possible.

The housing 18 houses a speed reduction mechanism 20 that decelerates the power of the steering assisting electric motor 19 and transmits it to the lower shaft 12. The speed reduction mechanism 20 includes a drive gear 21 that is connected to a rotating shaft (not shown) of the electric motor 19 so as to be able to rotate along with the driven shaft 22 and a driven gear 22 that meshes with the drive gear 21 and rotates along with the lower shaft 12. Yes.
When steering is performed by rotating the steering member 2, the rotation of the steering member 2 is transmitted in this order to the steering shaft 3, the universal joint 4, the intermediate shaft 5, the universal joint 6, and the pinion shaft 7. It is converted into linear movement in the vehicle width direction. Thereby, the turning of a steered wheel is achieved. Further, if necessary, the electric motor 19 is driven to assist the rotation of the steering shaft 3, so that the steering of the steering member 2 is assisted.

As described above, in the present embodiment, the steering apparatus 1 is described based on an example in which the steering apparatus 1 is applied to an electric power steering apparatus. However, the present invention is not limited to manual steering with the electric motor 19. You may apply to an apparatus.
The lower bracket 59 fixed to the vehicle body side member 14 supports the tilt center shaft 36 that is a pivot shaft. The tilt center shaft 36 supports the entire steering column 15 through the housing 18 of the steering column 15 so as to be swingable around the tilt center shaft 36. Tilt adjustment is possible by swinging the steering column 15. Note that the present invention can be applied not only to a steering apparatus having both a telescopic adjustment function and a tilt adjustment function, but also to a steering apparatus having only one of the adjustment functions.

Next, the periphery of the vehicle body side member 13 in the steering device 1 will be described. Here, in addition to the front-rear and up-down directions and the axial direction X1, the description will be made using the left-right direction Y1 (same as the vehicle width direction described above) orthogonal to the axial direction X1.
As shown in FIG. 2 which is a schematic cross-sectional view, the steering device 1 includes a fixed bracket 23 fixed to the vehicle body side member 13, a movable bracket 24 connected to the upper jacket 16, and a pair of suspension mechanisms T1, T2. And further. The fixed bracket 23 suspends the movable bracket 24 (in other words, the upper jacket 16 connected to the movable bracket 24) via the suspension mechanisms T1 and T2.

Next, the fixed bracket 23, the movable bracket 24, the suspension mechanisms T1, T2, and the like will be described with reference to FIG. 3 which is an exploded perspective view of the steering device 1. In FIG. 3, the upper left side is the front side of the steering device 1, and the lower right side is the rear side of the steering device 1.
The fixed bracket 23 is also referred to as an upper bracket, and is formed of a conductive material such as a sheet metal. That is, the fixing bracket 23 has conductivity. The fixed bracket 23 extends downward from a flat plate-like first plate 30 extending along both the axial direction X1 and the left-right direction Y1, and a pair of side edges (outer edges in the left-right direction Y1) of the first plate 30. A pair of side plates 37 and a pair of attachment plates 38 respectively extending outward (in the left-right direction Y1) from the pair of side plates 37 are provided. Each mounting plate 38 is fixed to the vehicle body side member 13 by a metal fixing bolt 40 (see FIG. 4) inserted from below into a screw insertion hole 39 formed in each mounting plate 38 (see FIG. 4). 2). Thereby, the fixing bracket 23 is fixed to the vehicle body side member 13.

  The movable bracket 24 is also referred to as a tilt bracket, and is formed of a conductive material such as a sheet metal like the fixed bracket 23. That is, the movable bracket 24 has conductivity. The movable bracket 24 includes a flat plate-like second plate 32 extending in parallel with the first plate 30, and a pair of side plates 41 extending downward from a pair of side edges (outer edges in the left-right direction Y1) of the second plate 32. And has a U-shape that is upside down. The movable bracket 24 is located directly below the fixed bracket 23, and the second plate 32 of the movable bracket 24 is disposed so as to face the first plate 30 of the fixed bracket 23 from below. The connection part of the 2nd board 32 and each side board 41 may be formed in the curved shape protruded to the outward in the left-right direction Y1, as shown in FIG.

  As shown in FIGS. 1 and 2, the steering device 1 includes a lock mechanism 29. Briefly described, the lock mechanism 29 is configured such that the position of the column jacket 26 (and thus the upper jacket) is moved via the movable bracket 24 by a tightening shaft 28 that moves in the left-right direction Y1 in accordance with the operation of the operation lever 27 by a driver or the like. 16 and the position of the steering member 2 are locked or unlocked.

  In relation to the lock mechanism 29, as shown in FIG. 2, the above-described column jacket 26 is fixed to the upper jacket 16 of the steering column 15. The column jacket 26 is made of a conductive material such as sheet metal. The column jacket 26 has a U-shape including a pair of side plates 71 that face the side plates 41 inside the pair of side plates 41 in the movable bracket 24 and a connecting plate 72 that connects the lower ends of the pair of side plates 71. ing.

  The above-described tightening shaft 28 is composed of a metal bolt that penetrates the movable bracket 24 and the side plates 41 and 71 of the column jacket 26 in the left-right direction Y1. Therefore, the column jacket 26 fixed to the upper jacket 16 and the movable bracket 24 are connected via the fastening shaft 28. Further, as described above, the steering member 2 is connected to the upper shaft 11 and the upper jacket 16 is connected to the upper shaft 11 (via the upper bearing 75) (see FIG. 1). The upper jacket 16 is connected. Therefore, it can be seen that the movable bracket 24 is connected to the steering member 2. Since the steering member 2, the upper shaft 11, the upper bearing 75, the upper jacket 16, the column jacket 26, the fastening shaft 28 and the movable bracket 24 are formed of a conductive material such as metal as described above, the movable bracket 24. Between the steering member 2 and the steering member 2 is ensured.

  Then, by rotating the nut 73 screwed to the tightening shaft 28 by the rotation operation of the operation lever 27, the both side plates 41, 71 are placed between the bolt head 28 </ b> A and the nut 73 on the tightening shaft 28. Tighten and lock both side plates 41, 71. Thereby, the position of the steering member 2 after telescopic adjustment and tilt adjustment can be locked. On the other hand, when the operation lever 27 is rotated in the opposite direction, the fastening (locking) of the side plates 41 and 71 is released, so that telescopic adjustment and tilt adjustment are possible.

  As shown in FIG. 3, a long groove 31 extending linearly along the axial direction X1 (front-rear direction) is formed in the first plate 30 of the fixed bracket 23 by stamping or cutting in press working. On the other hand, an insertion hole 33 is formed in the second plate 32 of the movable bracket 24. Each of the long groove 31 and the insertion hole 33 is provided in a pair corresponding to the pair of suspension mechanisms T1 and T2.

  The pair of long grooves 31 penetrates the first plate 30 in the plate thickness direction, and are arranged in parallel with each other at an interval in the left-right direction Y1. In a plan view of the steering device 1 as viewed from above, both end portions (both the front end portion 31A and the rear end portion 31B) of each long groove 31 in the axial direction X1 are rounded in an arc shape. An R chamfered portion 80 is provided on the edge 31 </ b> C of each long groove 31 on the upper surface 30 a of the first plate 30.

  In addition, the first plate 30 is integrally provided with a boundary portion 35 that partitions the pair of long grooves 31. The boundary portion 35 extends as a part of the fixing bracket 23 between the pair of long grooves 31 in a belt shape along the axial direction X1. A first through hole 66 that penetrates the boundary portion 35 (first plate 30) in the thickness direction is formed at one end portion (rear end portion) of the boundary portion 35 in the axial direction X1. The space | interval in the left-right direction Y1 of the 1st through-hole 66 and each long groove 31 is equal.

  The pair of insertion holes 33 are round holes that penetrate the second plate 32 in the plate thickness direction, and are arranged at intervals in the left-right direction Y1, and are formed in a part of the long groove 31 at the same position in the left-right direction Y1. On the other hand, it is facing from below. That is, one pair of insertion holes 33 is opposed to each of the pair of long grooves 31. In the second plate 32, a second through hole 67 that penetrates the second plate 32 in the plate thickness direction is formed between the pair of insertion holes 33 in the left-right direction Y1. The distance between the second through hole 67 and each insertion hole 33 in the left-right direction Y1 is equal. In addition, the 1st through-hole 66 and the 2nd through-hole 67 are holes in which the pin 61 mentioned later is penetrated, and it mentions later in detail.

In a normal state other than at the time of the secondary collision, the pair of insertion holes 33 (in the movable bracket 24) is in relation to the respective one end portions (rear end portions 31B) of the pair of long grooves 31 (in the fixed bracket 23). One by one (see FIG. 1).
Each of the suspension mechanisms T1 and T2 includes a suspension member 25, a plate spring 42 such as a disc spring, a nut 34, and a slide plate 43. Each of the suspension member 25, the leaf spring 42, and the nut 34 is provided in pairs (two) according to the suspension mechanisms T1, T2, and is arranged side by side in the left-right direction Y1.

  The suspension member 25 is a bolt that extends vertically and has a head 52 at the upper end. Each suspension member 25 is inserted one by one from above into the rear end portion 31B of the long groove 31 (of the first plate 30) and the insertion hole 33 (of the second plate 32) which are in an opposing state. Then, the lower end portion of each suspension member 25 is screwed into the nut 34. Thus, each suspension member 25 is connected to the first plate 30 and the second plate 32 in cooperation with the nut 34, and the movable bracket 24 (in other words, the column jacket 26 and the upper jacket 16) is fixed to the fixed bracket. 23 (see FIG. 2).

  Further, referring to FIG. 1, each suspension member 25 is moved along the long groove 31 at the time of a secondary collision, along with the movable bracket 24, the column jacket 26, the upper jacket 16, the upper shaft 11, and the steering member 2. It is possible to move forward in the axial direction X1. At this time, the long groove 31 guides the movement of the suspension member 25 at the time of the secondary collision. At this time, the movable bracket 24 moves relative to the fixed bracket 23 toward the front side along the axial direction X1 along with the steering member 2. Here, if the reference sign “Z1” is given to the moving direction of the movable bracket 24 at the time of the secondary collision, the axial direction X1 and the moving direction Z1 are parallel to each other, and the front side in the axial direction X1 is a predetermined value. This is the downstream side in the moving direction Z1. Note that the housing 18 of the steering column 15 may be detached from the lower bracket 59 on the vehicle body side as necessary so that the suspension member 25 and the movable member can move smoothly.

  The above-described slide plate 43 is a thin plate that is long in the left-right direction Y1, and as shown in FIG. 2, the plate spring 42 and the first plate 30 are in a state where the plate thickness direction coincides with the first plate 30. It is interposed between the upper surface 30a. At least the entire surface of the slide plate 43 on the first plate 30 side (the lower surface, referred to as the sliding surface 43A) is provided with a friction reducing material 81 such as fluororesin or tetrafluoroethylene resin. (See also FIGS. 5 and 6 to be described later). The friction reducing material 81 in this embodiment is Drymet (registered trademark) manufactured by Oiles Kogyo Co., Ltd. and has non-conductivity. Further, the entire slide plate 43 may be formed of the friction reducing material 81, or only the sliding surface 43 </ b> A of the slide plate 43 may be covered with the friction reducing material 81. In the slide plate 43, one second insertion hole 44 penetrating the slide plate 43 in the plate thickness direction is provided at a position facing each of the pair of insertion holes 33 in the movable bracket 24 (the same position in the left-right direction Y1). (A total of one pair) is formed. These second insertion holes 44 are arranged in the left-right direction Y1.

  Referring to FIG. 3, flanges 43 </ b> B that are bent at substantially right angles so as to be separated from the upper surface 30 a of the first plate 30 are provided at both ends of the slide plate 43 in the axial direction X <b> 1. . These flanges 43B are a part of the slide plate 43, and are formed by bending both ends of the slide plate 43 (the entire region in the left-right direction Y1) in the same direction (upward). Therefore, these flanges 43B are bent in the same direction. The sliding surface 43A, which is the lower surface of the slide plate 43, is a side surface opposite to the side (upper side) where the flange 43B is bent in the slide plate 43. On the sliding surface 43A of the slide plate 43, an R chamfered portion 82 is provided at and around the boundary between each flange 43B and the main body portion 43C other than the flange 43B. The R chamfered portion 82 is an arc surface (curved surface at the base of the flange 43B) that smoothly connects the flange 43B and the main body portion 43C.

  Each suspension member 25 includes an annular leaf spring 42, a corresponding second insertion hole 44 in the slide plate 43 (in the same position in the left-right direction Y1), a corresponding long groove 31 in the first plate 30, and a second plate. The corresponding insertion holes 33 of 32 are inserted from above in this order and screwed into the nuts 34 below the second plate 32. Thereby, each suspension member 25 suspends the movable bracket 24.

  At the time of the secondary collision, the suspension member 25 moves together with the movable bracket 24 along the long groove 31 of the fixed bracket 23. At this time, the slide plate 43 slides forward (downstream in the movement direction Z1) with respect to the fixed bracket 23. It can move together with the pair of suspension members 25 by moving. In the slide plate 43, the above-described sliding surface 43 </ b> A slides with respect to the upper surface 30 a of the first plate 30 of the fixing bracket 23.

  Here, the edge 31C of the long groove 31 in the fixed bracket 23 and the sliding portion (sliding surface 43A) that slides on the slide plate 43 with respect to the edge 31C of the long groove 31 include the R chamfered portion 80 as described above. , 82 are provided. Therefore, the slide plate 43 can slide smoothly with respect to the edge 31 </ b> C of the long groove 31 in the R chamfered portions 80 and 82. In other words, the sliding resistance between the members that move relative to each other to absorb the impact in the secondary collision (between the edge 31C of the long groove 31 and the slide plate 43) can be kept small.

  Further, between the first plate 30 of the fixed bracket 23 and the second plate 32 of the movable bracket 24, a first interposed plate 45 as a downstream first portion and a second interposed plate as an upstream first portion. 46 is inserted. The first interposition plate 45 and the second interposition plate 46 are thin in the vertical direction and have a plate shape that is long in the left-right direction Y1, and the movable bracket 24 is in front of the fixed bracket 23 in the secondary collision (downstream in the movement direction Z1). It works to reduce the sliding resistance when moving to. For convenience of explanation, there are some drawings in which the first interposed plate 45 and the second interposed plate 46 are omitted (FIG. 1 and the like).

Below, with reference to FIG. 5 and FIG. 6, the 1st interposition board 45 and the 2nd interposition board 46 are demonstrated. 5 and 6, the left side of the drawing is the front side (downstream side in the movement direction Z1), and the right side of the drawing is the rear side (upstream side in the movement direction Z1) (in FIGS. 9 and 10 described later). The same).
Referring to FIG. 5, the first interposed plate 45 moves between the first plate 30 and the downstream portion 321 that is the downstream end in the moving direction Z1 of the second plate 32 (movable bracket 24). It is inserted (arranged) from the downstream side (front side) in the direction Z1. The first interposed plate 45 in this state is along the upper surface 32 a and the lower surface 30 b of the first plate 30 in the downstream portion 321.

The first interposed plate 45 constitutes a part of a groove-shaped (U-shaped cross section) downstream slide member 77 that is locked to the downstream portion 321. The downstream slide member 77 is a part of the steering device 1 and is attached (fixed) to the movable bracket 24 from the downstream side in the movement direction Z1.
The downstream slide member 77 is formed of a conductive material (metal or the like). That is, the downstream slide member 77 has conductivity. The downstream slide member 77 having the U-shaped cross section described above follows the lower surface 32b of the second plate 32 while sandwiching the downstream portion 321 between the first interposed plate 45 and the first interposed plate 45. It includes an opposing plate 47 (downstream second portion) and a connecting plate 48 (downstream construction portion) that abuts on the downstream end edge (front end edge) in the movement direction Z1 of the second plate 32. The connecting plate 48 extends in the thickness direction of the second plate 32, and is spanned between the respective downstream end edges (front end edges) of the first interposed plate 45 and the counter plate 47 in the moving direction Z1.

The upper surface 45A of the first interposed plate 45, the lower surface 47A of the opposing plate 47, and the front surface 48A of the connecting plate 48 constitute an outer surface 77A of the downstream slide member 77, and the lower surface 45B of the first interposed plate 45 and the opposing plate 47 The upper surface 47 </ b> B and the rear surface 48 </ b> B of the connecting plate 48 constitute an inner surface 77 </ b> B of the downstream slide member 77.
Here, at least the upper surface 45A of the first interposed plate 45 is covered with the friction reducing material 81 described above. However, in this embodiment, the entire outer surface 77 </ b> A of the downstream slide member 77 is covered with the friction reducing material 81. However, the inner surface 77B of the downstream slide member 77 is not covered with the friction reducing material 81 and is in direct contact with the downstream portion 321 of the second plate 32 with the ground surface exposed. In the downstream slide member 77, the upper surface 45 </ b> A of the first interposed plate 45 is in contact with the lower surface 30 b of the first plate 30 of the fixed bracket 23 from below through the friction reducing material 81. That is, the downstream slide member 77 (including the friction reducing material 81) is in contact with the fixed bracket 23 only between the downstream portion 321 and the fixed bracket 23 (first plate 30).

  On the other hand, the second interposed plate 46 includes an upstream portion 302 that is an upstream end portion in the moving direction Z1 of the first plate 30 (fixed bracket 23) and an upstream portion in the moving direction Z1 of the second plate 32 (movable bracket 24). It is inserted (arranged) from the upstream side (rear side) in the movement direction Z1 between the upstream side portion 322 which is the side end portion. The second interposed plate 46 in this state is along the upper surface 32a of the second plate 32 (upstream portion 322) and the lower surface 30b of the first plate 30 (upstream portion 302).

The second interposed plate 46 constitutes a part of the upstream slide member 78 that is locked to both the upstream portion 302 of the first plate 30 and the upstream portion 322 of the second plate 32. The upstream slide member 78 is a part of the steering device 1 and is attached (fixed) to the fixed bracket 23 from the upstream side in the movement direction Z1.
The upstream slide member 78 is made of a conductive material (metal or the like). That is, the upstream slide member 78 has conductivity. The upstream slide member 78 is a counter plate 49 (along the upper surface 30a of the first plate 30 while sandwiching the upstream portion 302 of the first plate 30 between the second interposed plate 46 and the second interposed plate 46. Upstream second portion). Further, the upstream slide member 78 connects the second interposed plate 46 and the counter plate 49 and contacts the upstream portion 302 of the first plate 30 and the normal state described above. And a hook-like hooking claw 51 hooked on the upstream portion 322 of the second plate 32. The connecting plate 50 extends in the plate thickness direction of the first plate 30 and is bridged between the upstream end edges (rear end edges) of the second interposed plate 46 and the counter plate 49 in the moving direction Z1. The second intervening plate 46, the opposing plate 49, and the connecting plate 50 have a U-shaped cross section inclined 90 degrees toward the front side. The lower surface 46A of the second interposed plate 46, the upper surface 49A of the opposing plate 49, and the rear surface 50A of the connecting plate 50 constitute an outer surface 78A of the upstream slide member 78, and the upper surface 46B of the second interposed plate 46 and the opposing plate 49 The lower surface 49B and the front surface 50B of the connecting plate 50 constitute an inner surface 78B of the upstream slide member 78.

  The locking claw 51 extends downward from the center of the connecting plate 50 in the left-right direction Y1 and then bends forward (see FIG. 3), and its tip 51A protrudes to the front upper side. In relation to the locking claw 51, the second plate 32 is placed in the plate thickness direction slightly forward of the end edge (rear end edge 322 </ b> A) of the upstream portion 322 of the second plate 32 and behind the second through hole 67. A through-hole 88 that penetrates through is formed. In a normal state other than at the time of the secondary collision, as shown in FIG. 5, the locking claw 51 is along the rear end edge 322A and the lower surface 32b of the upstream portion 322, and the front end 51A of the locking claw 51 is a through hole. 88 is fitted from below.

  In the upstream slide member 78, at least a surface (lower surface 46 </ b> A) on the second plate 32 side of the second interposed plate 46 is covered with the friction reducing material 81. In this embodiment, the entire area of the outer surface 78A of the upstream slide member 78 and the outer surface of the locking claw 51 (the surface continuing to the rear surface 50A of the connecting plate 50) 51B is covered with the friction reducing material 81. On the other hand, the inner surface 78B of the upstream slide member 78 is not covered with the friction reducing material 81, and is in direct contact with the upstream portion 302 of the first plate 30 with the ground surface exposed. In addition, the inner surface 51C hooked on the upstream portion 322 (the edge of the through hole 88) of the second plate 32 in the locking claw 51 is also not covered with the friction reducing material 81, and the ground is exposed. The second plate 32 (lower surface 32b) is in direct contact. By such an upstream slide member 78, in the normal state, the electrical conductivity between the first plate 30 (fixed bracket 23) and the second plate 32 (movable bracket 24) is ensured.

  Here, the steering member 2 is provided with a switch 89 for sounding a horn (not shown) (see FIG. 1). A ground wire (not shown) of the switch 89 is connected to the metal portion of the steering member 2. The energization path K for grounding the switch 89 is the steering member 2, the upper shaft 11, the upper bearing 75, the upper jacket 16, the column jacket 26, the movable bracket 24, the upstream slide member 78, the fixing bracket 23, and the fixing bolt. 40 and a vehicle body side member 13 (vehicle body) (see FIGS. 1, 2 and 5).

  Next, the suspension member 25 will be described in detail with reference to FIG. 3. Each suspension member 25 includes the above-described flange-shaped head 52, a large-diameter portion 53 that is continuous with the head 52, and has a smaller diameter than the head 52. A small-diameter portion 54 connected to the large-diameter portion 53 and having a smaller diameter than the large-diameter portion 53, a step portion 55 formed between the large-diameter portion 53 and the small-diameter portion 54, and a screw portion 56 provided in the small-diameter portion 54 I have. The head 52 is provided with a tool engaging portion 57 having a hexagonal hole shape, for example.

  In a normal state other than the time of the secondary collision, as shown in FIG. 2, in each suspension member 25, the head 52 is engaged with the leaf spring 42 from above. In each suspension member 25, the large-diameter portion 53 is inserted from above into the hollow portion of the leaf spring 42, the second insertion hole 44 of the slide plate 43, and the rear end portion 31 </ b> B of the long groove 31. . Thus, the slide plate 43 is interposed between the head 52 of each suspension member 25 and the fixing bracket 23 (the edge 31C of the long groove 31). The step portion 55 contacts the upper surface 32a of the second plate 32 and is received by the upper surface 32a. The second plate 32 is sandwiched between the step portion 55 and the nut 34, and the suspension member 25 and the second plate 32 are fixed.

  The distance H1 between the head 52 and the stepped portion 55 (corresponding to the axial length of the large diameter portion 53) is the plate thickness (or the first thickness) of the first interposed plate 45 interposed between the first plate 30 and the second plate 32. 2 plate thickness), the plate thickness of the first plate 30, the plate thickness of the slide plate 43 along the upper surface 30a of the first plate 30, and the plate thickness of the leaf spring 42 at the time of the most compression. It is also slightly larger. Thus, the leaf spring 42 elastically biases the first plate 30 toward the second plate 32 via the slide plate 43.

In the normal state described above, each suspension member 25 is located at the rear end 31B of the long groove 31 (see FIG. 4). The position of the movable bracket 24 (second plate 32) at this time in the axial direction X1 (movement direction Z1) is referred to as an initial position (see FIGS. 1, 2, 5, and 9).
Then, the steering device 1 connects the first plate 30 of the fixed bracket 23 and the second plate 32 of the movable bracket 24, and when the secondary collision occurs, the second plate 32 is moved from the initial position (see FIGS. 5 and 9). As shown in FIG. 6 (also FIG. 10), a connecting / disconnecting mechanism R1 is provided that disengages (relatively moves) from the first plate 30 toward the front side in the axial direction X1 (downstream side in the moving direction Z1).

  As shown in FIG. 2 and FIG. 4 which is a partially broken schematic plan view, the connection / disengagement mechanism R1 is between the pair of suspension mechanisms T1, T2 (that is, the first plate 30 of the fixing bracket 23) in the left-right direction Y1. Between the pair of long grooves 31). Specifically, the connecting / disconnecting mechanism R1 is disposed at the center position between the pair of long grooves 31 (that is, between the pair of suspension members 25) in the left-right direction Y1. The connecting / disconnecting mechanism R1 includes a resin-made pin 61 that shears (breaks) at the time of a secondary collision, and a cylindrical metal collar 62 that is fitted to a part of the pin 61 in the axial direction. Instead of the metal collar 62, a color such as high hardness resin or ceramic may be used.

Referring to FIG. 5, the pin 61 of the connection / detachment mechanism R <b> 1 includes, for example, a head 63 having a circular cross section and a columnar shaft 64 having a smaller diameter than the head 63. The cylindrical metal collar 62 is fitted on the outer periphery of the shaft portion 64. The outer diameter of the metal collar 62 is equal to the outer diameter of the head 63 of the pin 61.
In the normal state described above, the first through hole 66 of the first plate 30 of the fixed bracket 23 and the second through hole 67 of the second plate 32 of the movable bracket 24 are in the axial direction X1 (moving direction Z1) and the left-right direction Y1. In the same position, and face each other vertically. At this time, the head 63 of the pin 61 and most of the metal collar 62 are inserted into the first through hole 66 of the first plate 30 of the fixing bracket 23. A part of the metal collar 62 protrudes downward from the first through hole 66. A portion of the shaft portion 64 of the pin 61 that protrudes from the metal collar 62 is inserted into the second through hole 67 of the second plate 32 of the movable bracket 24. That is, the pin 61 is inserted over the first through hole 66 and the second through hole 67 that are in the opposing state. Accordingly, the pin 61 positions the movable bracket 24 with respect to the fixed bracket 23.

The first end portion 621 (the upper end portion in FIG. 5) of the metal collar 62 in contact with the head 63 of the pin 61 and the second end portion 622 in the axial direction of the metal collar 62 (lower end portion in FIG. 5). Is received by the upper surface 32 a of the second plate 32. As a result, the pin 61 and the metal collar 62 are prevented from dropping below the second plate 32.
On the other hand, the slide plate 43 is disposed so as to cover the top of the head portion 63 of the pin 61, so that the pin 61 is prevented from falling off. In addition, a peep hole 65 smaller than the outer diameter of the head 63 is formed in the slide plate 43 so as to face the head 63 of the pin 61. By visually recognizing the head 63 of the pin 61 through the viewing hole 65 of the slide plate 43 after assembling the connecting / disconnecting mechanism R1, it is possible to easily determine a work defect such as forgetting to attach the pin 61.

As shown in FIG. 7 which is a cross section taken along line VII-VII in FIG. 2, the first through hole 66 of the first plate 30 is located at the center position between the long grooves 31 for the suspension mechanisms T1, T2 in the left-right direction Y1. One is arranged in each. That is, the pin 61 is disposed at the center position between the pair of suspension members 25 in the left-right direction Y1.
Further, each first through hole 66 of the first plate 30 is formed in a horizontally long hole that is long in the left-right direction Y1. Thereby, gaps S1 and S2 are provided between the outer periphery of the metal collar 62 and the inner periphery of the first through hole 66 in the left-right direction Y1.

As shown in FIG. 8, which is a cross section taken along line VIII-VIII in FIG. 2, the second through-hole 67 of the second plate 32 of the movable bracket 24 is located at the center position between the pair of insertion holes 33 in the left-right direction Y1. One is arranged. The second through hole 67 is formed by a circular hole having an inner diameter that is the same as or slightly larger than the outer diameter of the shaft portion 64 of the pin 61.
At the time of the secondary collision, as shown in FIG. 6, the first through hole 66 and the second through hole 67 are displaced. The shaft 64 of the pin 61 is positioned at a position between the first through hole 66 and the second through hole 67 due to the displacement of the mating surface between the second end 622 of the metal collar 62 and the second plate 32. Sheared (broken). The shear blade constituted by the inner peripheral edge of the second end 622 of the metal collar 62 has an arc shape (see FIG. 7), and the shear blade constituted by the edge of the second through hole 67 of the second plate 32 is also used. The arc shape (see FIG. 8).

  At the time of the secondary collision, the movable bracket 24 is released from the fixed bracket 23 due to the breakage of the pin 61 and, as described above, from the initial position (see FIG. 5) to the front side in the axial direction X1 (moving direction) as shown in FIG. Leave to the downstream side in Z1. That is, at the time of a secondary collision, the pin 61 breaks between the first through hole 66 and the second through hole 67 that are displaced from each other, thereby permitting relative movement of the movable bracket 24 with respect to the fixed bracket 23 in the axial direction X1. . Thereby, the impact in the secondary collision is absorbed.

  Further, at the time of the secondary collision, the downstream slide member 77 fixed to the movable bracket 24 moves to the downstream side in the movement direction Z1 together with the movable bracket 24. At this time, the downstream slide member 77 is moved to the lower surface 30b of the first plate 30 of the fixed bracket 23. Rub. Specifically, in the downstream slide member 77, the surface (upper surface 45 </ b> A) on the first plate 30 side of the first interposed plate 45 rubs against the fixed bracket 23 via the friction reducing material 81. On the other hand, the upstream slide member 78 fixed to the fixed bracket 23 mainly slides against the upper surface 32a of the second plate 32 of the movable bracket 24 that moves. Specifically, in the upstream slide member 78, the surface (lower surface 46 </ b> A) on the second plate 32 side of the second interposed plate 46 rubs against the movable bracket 24 via the friction reducing material 81.

  Further, immediately after the break of the pin 61 in the secondary collision, as shown in FIG. 6, the locking claw 51 in the upstream slide member 78 is deformed in response to the movable bracket 24 starting to be released to the front side. The movable bracket 24 is disengaged from the through hole 88 of the second plate 32. Thereby, the electrical conductivity between the upstream side slide member 78 and the movable bracket 24 is lost, and the above-described energization path K (see FIG. 5) is interrupted.

  The deformation of the latching claw 51 immediately after the break of the pin 61 may cause the separation load of the movable bracket 24 (the load necessary for separation from the initial position) to vary. Further, in the case where such a locking claw 51 is provided, by forming the locking claw 51 by bending, the shape and manufacturing process of the upstream slide member 78 become complicated, and only the amount of the locking claw 51 is provided. Since the material cost is high, the manufacturing cost of the upstream slide member 78 is inevitably increased. Furthermore, a through hole 88 for fitting the locking claw 51 must be formed in the second plate 32 of the movable bracket 24.

  Therefore, in the present invention, the locking claw 51 is eliminated from the upstream slide member 78 as shown in FIG. Therefore, the upstream slide member 78 is composed only of the second intervening plate 46, the opposing plate 49, and the connecting plate 50 described above, and has a U-shape straddling the upstream portion 302 of the first plate 30 from the rear side up and down. Has a cross section. Therefore, in the normal state shown in FIG. 9, in the upstream slide member 78, only the lower surface 46 </ b> A of the second interposed plate 46 is in contact with the upstream portion 322 of the second plate 32 from above. That is, the upstream slide member 78 in the normal state is in contact with the movable bracket 24 (second plate 32) only between the upstream portion 322 of the second plate 32 and the fixed bracket 23. In this case, at the time of the secondary collision, the lower surface 46A of the second interposed plate 46 slides on the movable bracket 24 (via a conductive friction reducing material 100 described later) (see FIGS. 9 and 10). That is, at the time of the secondary collision, the upstream slide member 78 slides on the movable bracket 24 only between the upstream portion 322 of the movable bracket 24 and the fixed bracket 23. On the other hand, the downstream slide member 77 slides on the fixed bracket 23 only between the downstream portion 321 of the movable bracket 24 and the fixed bracket 23 at the time of a secondary collision.

  In the present invention, a friction reducing material 100 having conductivity (hereinafter referred to as a conductive friction reducing material) 100 is used instead of the non-conducting friction reducing material 81 (see FIG. 5 and the like). The conductive friction reducing material 100 in this embodiment is a current-carrying resin coating metal called Techmet (registered trademark) manufactured by Oiles Kogyo Co., Ltd. The conductive friction reducing material 100 is included in the steering device 1. The conductive friction reducing material 100 is provided on the upstream slide member 78 at least on a portion that slides on the movable bracket 24 (the lower surface 46A of the second interposed plate 46). In this embodiment, the conductive friction reducing material 100 is provided over the entire area of the outer surface 78A of the upstream slide member 78 (including the lower surface 46A of the second interposed plate 46). The conductive friction reducing material 100 provided on the upstream slide member 78 can be regarded as a part of the upstream slide member 78. Further, the entire upstream slide member 78 can be formed of the conductive friction reducing material 100.

  As a result, even with the upstream slide member 78 having an inexpensive structure that is not complicated in shape (the shape having the locking claw 51 described above), the fixed bracket 23 and the movable bracket 24 can be moved in the normal state described above (see FIG. 9). The above-described energization path K can be configured while ensuring the conductivity between them. Further, the conductive friction reducing material 100 can reduce the friction between the movable bracket 24 and the upstream slide member 78 when the upstream slide member 78 rubs against the movable bracket 24 at the time of a secondary collision ( (See FIG. 10).

  Further, the conductive friction reducing material 100 is also provided on a portion (the upper surface 45A of the first interposed plate 45) that slides on the fixed bracket 23 in the downstream slide member 77. In this embodiment, the conductive friction reducing material 100 is provided over the entire inner surface 77B (including the upper surface 45A of the first interposed plate 45) of the downstream slide member 77. Here, the conductive friction reducing material 100 reduces the friction between the fixed bracket 23 and the downstream slide member 77 when the downstream slide member 77 rubs against the fixed bracket 23 during the secondary collision. The conductive friction reducing material 100 provided on the downstream slide member 77 can be regarded as a part of the downstream slide member 77. Further, the entire downstream slide member 77 can be formed of the conductive friction reducing material 100.

As described above, as shown in FIG. 9, the conductive friction provided on the upstream slide member 78 and the portion of the upstream slide member 78 that slides on the movable bracket 24 (the lower surface 46 </ b> A of the second interposed plate 46). With the reducing material 100, it is possible to ensure electrical conductivity between the fixed bracket 23 on the vehicle body side and the movable bracket 24 on the steering member 2 side.
Further, the vehicle body side fixing is performed by the downstream slide member 77 and the conductive friction reducing material 100 provided on the portion (the upper surface 45A of the first interposed plate 45) that slides on the fixing bracket 23 in the downstream slide member 77. Energization between the bracket 23 and the movable bracket 24 on the steering member 2 side can be ensured. In other words, the electrical conductivity between the fixed bracket 23 and the movable bracket 24 is referred to as an upstream slide member 78 (including the conductive friction reducing material 100) and a downstream slide member 77 (including the conductive friction reducing material 100). Two energization paths K (see reference numerals “K1” and “K2” in FIG. 9) can be ensured twice. Thereby, the electrical conductivity between the fixed bracket 23 and the movable bracket 24 can be reliably ensured. After the secondary collision, as shown in FIG. 10, the upstream slide member 78 is separated from the movable bracket 24, so that the energization path K <b> 1 (see FIG. 9) on the upstream slide member 78 side is blocked. . However, since the downstream slide member 77 on the movable bracket 24 side continues to contact the fixed bracket 23, the energization path K2 on the downstream slide member 77 side continues to exist.

  Here, in the normal state, as shown in FIG. 9, the upstream slide member 78 is in contact with the movable bracket 24 only between the upstream portion 322 of the movable bracket 24 and the fixed bracket 23. The upstream slide member 78 slides on the movable bracket 24 only between the upstream portion 322 of the movable bracket 24 and the fixed bracket 23 at the time of a secondary collision. Further, the conductive friction reducing material 100 is provided on a portion (the lower surface 46A of the second interposed plate 46) that slides on the movable bracket 24 in the upstream slide member 78. Therefore, the upstream slide member 78 is unlikely to hinder the movement of the movable bracket 24 (relative movement with respect to the fixed bracket 23) for absorbing the impact at the time of the secondary collision.

  Further, the downstream slide member 77 is in contact with the fixed bracket 23 only between the downstream portion 321 of the movable bracket 24 and the fixed bracket 23. The downstream slide member 77 slides on the fixed bracket 23 only between the downstream portion 321 of the movable bracket 24 and the fixed bracket 23 at the time of a secondary collision. Further, a conductive friction reducing material 100 is provided on a portion (upper surface 45A of the first interposed plate 45) that slides on the fixed bracket 23 in the downstream slide member 77. Therefore, similarly to the upstream slide member 78, the downstream slide member is unlikely to hinder the movement of the movable bracket 24 (relative movement with respect to the fixed bracket 23) for shock absorption at the time of the secondary collision.

As described above, in the normal state (see FIG. 9), the electrical conductivity between the fixed bracket 23 and the movable bracket 24 is ensured, and at the time of the secondary collision (see FIG. 10), the fixed bracket 23 and the movable bracket 24 are used. Stable and smooth relative movement can be achieved.
Moreover, both the upstream side slide member 78 and the downstream side slide member 77 can be made into the simple shape which has a U-shaped cross section. Thereby, the assembling property in each of the upstream slide member 78 and the downstream slide member 77 in the steering device 1 can be improved. Further, the upstream slide member 78 and the downstream slide member 77 that have a simple shape and improved assembling performance can reduce the cost of manufacturing the steering device 1.

  The present invention is not limited to the embodiment described above, and various modifications can be made within the scope of the claims.

DESCRIPTION OF SYMBOLS 1 ... Steering device, 2 ... Steering member, 13 ... Car body side member, 23 ... Fixed bracket, 24 ... Movable bracket, 45 ... 1st interposed plate, 45A ... Upper surface, 46 ... 2nd interposed plate, 46A ... Lower surface, 47 ... Counter plate, 48 ... connecting plate, 49 ... counter plate, 50 ... connecting plate, 77 ... downstream slide member, 78 ... upstream slide member, 100 ... conductive friction reducing material, 321 ... downstream portion, 322 ... upstream side Part, Z1 ... direction of movement

Claims (3)

A fixing bracket having conductivity and fixed to the vehicle body;
It is conductive and is connected to a steering member to which a ground wire of a switch for ringing a horn is connected. In the event of a secondary collision, the fixed member is directed toward the downstream side in a predetermined movement direction with the steering member. A movable bracket movable relative to the bracket;
An upstream slide member that has electrical conductivity and is attached to the fixed bracket, and is inserted between the upstream portion of the movable bracket in the moving direction and the fixed bracket, and at the time of a secondary collision, An upstream slide member that slidably rubs against the movable bracket only between the upstream portion and the fixed bracket;
Conductive friction reduction that has conductivity and is provided in a portion that slides on the movable bracket in the upstream slide member, and reduces friction between the movable bracket and the upstream slide member during a secondary collision. Material,
A downstream slide member having electrical conductivity and attached to the movable bracket, which is inserted between the downstream portion of the movable bracket in the moving direction and the fixed bracket, and at the time of a secondary collision, A downstream slide member that slidably rubs against the fixed bracket only between the downstream portion and the fixed bracket;
Only including,
The conductive friction reducing material is provided on a portion of the downstream slide member that slides on the fixed bracket in order to reduce friction between the fixed bracket and the downstream slide member at the time of a secondary collision. A steering apparatus, characterized in that   The upstream slide member includes an upstream first portion disposed between the upstream portion and the fixing bracket, and an upstream second portion sandwiching the fixing bracket between the upstream first portion and the upstream sliding portion. And a U-shaped cross section including an upstream installation portion constructed between the upstream end edges of the upstream first portion and the upstream second portion in the moving direction. The steering apparatus according to claim 1, wherein the steering apparatus is characterized. The downstream slide member includes a downstream first portion disposed between the downstream portion and the fixing bracket, and a downstream second portion sandwiching the downstream portion between the downstream first portion. And a U-shaped cross section that includes a downstream construction portion constructed between the downstream end edges of the downstream first portion and the downstream second portion in the moving direction. The steering apparatus according to claim 1 or 2 , characterized by the above.

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