WO2015008816A1 - ステアリング装置 - Google Patents
ステアリング装置 Download PDFInfo
- Publication number
- WO2015008816A1 WO2015008816A1 PCT/JP2014/068995 JP2014068995W WO2015008816A1 WO 2015008816 A1 WO2015008816 A1 WO 2015008816A1 JP 2014068995 W JP2014068995 W JP 2014068995W WO 2015008816 A1 WO2015008816 A1 WO 2015008816A1
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- WO
- WIPO (PCT)
- Prior art keywords
- resin pin
- collar
- plate
- hole
- insertion hole
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/16—Steering columns
- B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
- B62D1/19—Steering columns yieldable or adjustable, e.g. tiltable incorporating energy-absorbing arrangements, e.g. by being yieldable or collapsible
- B62D1/195—Yieldable supports for the steering column
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/16—Steering columns
- B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
- B62D1/187—Steering columns yieldable or adjustable, e.g. tiltable with tilt adjustment; with tilt and axial adjustment
- B62D1/189—Steering columns yieldable or adjustable, e.g. tiltable with tilt adjustment; with tilt and axial adjustment the entire column being tiltable as a unit
Definitions
- the present invention relates to a steering device.
- a secondary collision in which the driver hits the steering wheel occurs following a primary collision in which the vehicle hits another vehicle.
- 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.
- a pair of locking notches extending in parallel to the column axis direction is provided on the vehicle body side bracket fixed to the vehicle body.
- the column side bracket is supported via a pair of locking capsules held by a plurality of locking pins in each locking notch.
- Each locking capsule is coupled and fixed to the column side bracket via a bolt that passes through each locking notch.
- each locking capsule is detached from the corresponding locking notch, and the bolt, the locking capsule, the column bracket, Moves along the column axis.
- the attitude of the locking pin is not stable at the time of a secondary collision.
- the locking pin moves in the column moving direction.
- There is a risk of falling (so-called falling).
- the locking pin cannot be sheared smoothly, there is a possibility that a stable shock absorbing load cannot be obtained.
- the inventor first provided a slide plate that closes the top of the resin pin and moves in the column movement direction at the time of the secondary collision, and the elastic repulsion force is applied to the slide plate by an axial elastic protrusion provided on the resin pin. Thought to give.
- an object of the present invention is to provide a steering device capable of suppressing the axial elastic protrusion of the resin pin and the resin pin visual hole from being caught at the time of a secondary collision.
- the present invention provides a first resin pin insertion hole fixed to a vehicle body side member and a first bolt insertion hole comprising a long hole extending in a column moving direction at the time of a secondary collision.
- a fixed bracket including one plate, a movable jacket rotatably supporting a steering shaft having a steering member connected to one end thereof, and the movable jacket supported so as to move in the column moving direction together with the movable jacket in a secondary collision.
- a movable bracket including a second plate facing the lower surface of the first plate, the second plate having a second resin pin insertion hole and a second bolt insertion hole, and an upper surface of the first plate.
- the third bolt insertion hole, the first bolt insertion hole, and the second bolt insertion hole are sequentially inserted through the slide plate in which the third bolt insertion hole and the resin pin visual recognition hole are formed.
- 1 board and front A suspension bolt that suspends the movable jacket via the movable bracket by connecting the second plate, and a suspension mechanism that is movable in a column moving direction corresponding to a secondary collision, and the resin pin An axial end face that faces the viewing hole, and passes through the first resin pin insertion hole and the second resin pin insertion hole to connect the second plate to a predetermined position of the first plate;
- the resin plate is fitted to the resin pin in a state where it is received directly or indirectly by a resin pin for detaching the second plate from the predetermined position in the column moving direction at the time of a collision and a member suspended by the suspension mechanism.
- a collar having a hardness higher than that of the resin pin, and either the resin pin or the collar has secondary elastic protrusions protruding in the axial direction for directly or indirectly urging the slide plate.
- either the resin pin or the collar passes through the elastic protrusion in the axial direction that directly or indirectly biases the slide plate, and the resin pin viewing hole passes through the column moving direction in the event of a secondary collision. Since it is provided at a position that avoids this range, it is possible to suppress the axial elastic protrusion of the resin pin and the resin pin visual recognition hole from being caught at the time of a secondary collision. As a result, the influence on the detachment load caused by the catch (the detachment load increases) can be suppressed.
- the resin pin includes a shaft portion through which the collar is inserted, and a head flange connected to one end of the shaft portion, and the head flange is a first surface facing the slide plate.
- the second surface facing the end surface of the collar, and the elastic protrusion is disposed on the first surface of the head flange at a position avoiding the resin pin visual recognition hole,
- the resin pin includes a shaft portion through which the collar is inserted, and a head flange connected to one end of the shaft portion, and an inner periphery of the first resin pin insertion hole is formed on the head flange. It includes a flat portion that restricts rotation of the resin pin by engaging with a flat portion provided on the outer periphery, and the head flange faces the first surface facing the slide plate and the end surface of the collar. And the elastic protrusion may be arranged at a position avoiding the resin pin visual recognition hole on the first surface of the head flange.
- the resin pin includes a shaft portion through which the collar is inserted, and a head flange connected to one end of the shaft portion, and the head flange has a first surface facing the slide plate, A second surface facing the end surface of the collar, and the elastic protrusion may be provided on the second surface of the head flange.
- the head flange of the resin pin has the first surface facing the slide plate and the second surface facing the collar, and the axial elastic protrusion is not the first surface. , Provided on the second surface. It is impossible for the elastic protrusion in the axial direction to be caught in the resin pin visual recognition hole itself.
- the collar includes a first collar disposed in the first resin pin insertion hole and press-fitted to the resin pin, and a collar disposed in the second resin pin insertion hole and loosely fitted to the resin pin.
- the elastic protrusion may be provided on at least one of the opposing surfaces of the first collar and the second collar. According to the above configuration, since the elastic protrusion in the axial direction is provided on at least one of the opposing surfaces of the first collar and the second collar, the elastic protrusion cannot be caught in the resin pin visual recognition hole itself.
- the resin pin visual recognition hole may include a color visual recognition region where a part of the color can be visually recognized. According to the said structure, the presence or absence of the assembly
- FIG. 1 is a schematic side view of a steering device according to a first embodiment of the present invention, and shows a schematic configuration of the steering device.
- FIG. 2 is a schematic cross-sectional view of the steering device according to the first embodiment, showing a cross section taken along line II-II in FIG. 1. It is a disassembled perspective view of the steering device of a 1st embodiment. It is a partially broken schematic plan view of a fixed bracket, a pair of suspension mechanisms, and a connecting / disconnecting mechanism in the first embodiment.
- FIG. 5 is a partially broken schematic plan view of a fixing bracket, a pair of suspension mechanisms, and a connection / detachment mechanism, with a part of the slide plate of FIG. 4 broken away. It is the figure which expanded a part of FIG.
- connection state of the 1st board and 2nd board of 4th Embodiment It is sectional drawing of the connection state of the 1st board and 2nd board of 4th Embodiment, and has shown the cross section of the left-right direction (direction orthogonal to a column moving direction) containing the axis line of the resin pin. It is sectional drawing of the connection state of the 1st board and 2nd board of 5th Embodiment of this invention, and shows the cross section of the left-right direction (direction orthogonal to a column moving direction) containing the axis line of the resin pin.
- connection state of the 1st board and 2nd board of 6th Embodiment of this invention and the cross section of the left-right direction (direction orthogonal to a column moving direction) containing the axis line of the resin pin is shown.
- connection state of the 1st board and 2nd board of 7th Embodiment of this invention and the cross section of the left-right direction (direction orthogonal to a column moving direction) containing the axis line of the resin pin is shown.
- FIG. 1 is a schematic diagram showing a schematic configuration of a steering apparatus according to a first embodiment of the present invention.
- a steering apparatus 1 includes a steering shaft 3 connected to a steering member 2 such as a steering wheel, an intermediate shaft 5 connected to the steering shaft 3 via a universal joint 4, and an intermediate shaft 5.
- a pinion shaft 7 connected via a universal joint 6 and a rack shaft 8 as a steered shaft having a rack 8a meshing with a pinion 7a provided in the vicinity of the end of the pinion shaft 7 are provided.
- the steering mechanism A1 is constituted 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 the vehicle body side member 9 so as to be movable in an axial direction along the left-right direction of the vehicle (a direction orthogonal to the paper surface).
- each end of the rack shaft 8 is connected to a corresponding steered wheel via a corresponding tie rod and a corresponding knuckle arm.
- the steering shaft 3 includes an upper shaft 11 and a lower shaft 12 that are connected to each other so as to be able to rotate together and to be relatively movable in the axial direction 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 a bearing (not shown).
- the steering column 15 includes a cylindrical upper jacket 16 (movable jacket) fitted so as to be relatively movable in the axial direction, a cylindrical lower jacket 17, and a housing 18 connected to the lower axial end of the lower jacket 17. I have.
- 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 coupled to a rotation shaft (not shown) of the electric motor 19 so as to be able to rotate together with the drive gear 21 and a driven gear 22 that meshes with the drive gear 21 and rotates along with the lower shaft 12. .
- the steering apparatus 1 will be described based on an example in which the steering apparatus 1 is applied to an electric power steering apparatus.
- the present invention may be applied to a manual steering apparatus.
- the case where the steering device 1 is adjustable in tilt will be described.
- the present invention may be applied to a steering device that does not have a tilt adjustment function, and tilt adjustment is possible.
- the present invention may be applied to a steering device capable of telescopic adjustment.
- the steering apparatus 1 includes a pair of suspension mechanisms T ⁇ b> 1 and T ⁇ b> 2 that suspend the upper jacket 16 by a fixed bracket 23 via a tilt bracket 24 as a movable bracket. . That is, as shown in FIGS. 1 and 2, a tilt bracket 24 as a movable bracket is suspended from a fixed bracket 23 fixed to the vehicle body side member 13 as a suspension shaft of a pair of suspension mechanisms T1 and T2. It is suspended via a bolt 25. On the other hand, a column bracket 26 is fixed to the upper jacket 16 of the steering column 15.
- the steering device 1 has the position of the column bracket 26 after the tilt adjustment (and thus the upper jacket 16) via the tilt bracket 24 by the tightening shaft 28 according to the operation of the operation lever 27. And a lock mechanism 29 for locking and releasing the position of the steering member 2.
- the tilt bracket 24 includes a pair of side plates 41.
- the column bracket 26 has a pair of side plates 41 facing the pair of side plates 41.
- the groove plate is provided with a side plate 71 and a connecting plate 72 that connects the lower ends of the pair of side plates 71.
- the tightening shaft 28 includes bolts that penetrate the side plates 41 and 71 of the tilt bracket 24 and the column bracket 26.
- the both side plates 41 and 71 are tightened between the head of the bolt as the tightening shaft 28 and the nut 73, Both side plates 41 and 71 are locked. Thereby, the position of the steering member 2 after the tilt adjustment is locked to achieve the tilt lock.
- the steering device 1 connects the first plate 30 of the fixed bracket 23 and the second plate 32 of the tilt bracket 24, and the second plate 32 is moved to a predetermined position (see FIG. 9) of the first plate 30 at the time of a secondary collision.
- a connecting / disconnecting mechanism R1 for releasing in the column moving direction X1 is provided.
- the connection / disengagement mechanism R1 is between the pair of suspension mechanisms T1 and T2 in the direction Y1 perpendicular to the column movement direction X1. (In other words, it is arranged between a pair of first bolt insertion holes 31 described later on the first plate 30 of the fixing bracket 23).
- the connecting / disconnecting mechanism R1 is disposed at a central position between the pair of first bolt insertion holes 31 (that is, between the pair of hanging bolts 25) in the direction Y1 orthogonal to the column moving direction X1. Has been.
- the fixed bracket 23 includes a first plate 30 that is parallel to the column moving direction X1 (corresponding to the axial direction of the steering shaft 3) at the time of the secondary collision.
- the first plate 30 is formed with first bolt insertion holes 31 for the suspension mechanisms T1 and T2, which are long holes extending in parallel with the column moving direction X1.
- the tilt bracket 24 (movable bracket) includes a second plate 32 that faces the first plate 30.
- the second plate 32 is formed with a second bolt insertion hole 33 for the suspension mechanisms T1 and T2 that faces a part of the first bolt insertion hole 31.
- the suspension bolt 25 is constituted by a bolt that is inserted through the first bolt insertion hole 31 of the first plate 30 and the second bolt insertion hole 33 of the second plate 32 and screwed into the nut 34.
- a suspension bolt 25 that connects the first plate 30 and the second plate 32 in cooperation with the nut 34 suspends the upper jacket 16 (movable jacket) via the tilt bracket 24 (movable bracket) and the column bracket 26.
- the suspension bolt 25 is movable along the first bolt insertion hole 31 in the column movement direction X1 along with the tilt bracket 24 (movable bracket), the column bracket 26, and the upper jacket 16 at the time of the secondary collision.
- each suspension mechanism T1, T2 is composed of a suspension bolt 25, a leaf spring 42 made of, for example, a disc spring, a nut 34, and the like.
- the connecting / disconnecting mechanism R1 includes a resin pin 61 that shears at the time of a secondary collision, and a collar 62 that is fitted to a part of the resin pin 61 in the axial direction and has an outer shape that is, for example, an oblong shape. Yes.
- the material of the collar 62 a metal such as iron may be used, or a resin, ceramic, or the like having a hardness higher than that of the resin pin 61 may be used.
- the resin pin 61 may be formed of polyacetal resin (POM)
- the collar 62 may be formed of polyamide resin (PA) having a hardness higher than that of the polyacetal resin.
- the fixing bracket 23 includes a pair of side plates 37 extending downward from a pair of side edges of the first plate 30, and a pair of side plates 37 extending outward from the pair of side plates 37. And an attachment plate 38.
- the fixed bracket 23 is formed of, for example, a sheet metal.
- Each mounting plate 38 is fixed to the vehicle body side member 13 by a fixing bolt 40 (see FIG. 4) inserted through a screw insertion hole 39 (see FIGS. 3 and 4) provided in each mounting plate 38. Thereby, as shown in FIG. 1, the fixing bracket 23 is fixed to the vehicle body side member 13.
- the tilt bracket 24 (movable bracket) is formed of, for example, a sheet metal.
- the tilt bracket 24 includes a second plate 32 and a pair of side plates 41 extending downward from a pair of side edges of the second plate 32, and has a groove shape.
- the connection part between the second plate 32 and each side plate 41 may be formed in a curved shape as shown in FIGS.
- each suspension bolt 25 includes, for example, an annular leaf spring 42 made of a disc spring, a corresponding third bolt insertion hole 44 of the slide plate 43, a corresponding first bolt insertion hole 31 of the first plate 30, and a second.
- the corresponding second bolt insertion holes 33 of the plate 32 are sequentially inserted and screwed into the nuts 34. As a result, the suspension bolt 25 suspends the tilt bracket 24.
- the slide plate 43 is a long plate extending in the direction Y1 perpendicular to the column moving direction X1, and as shown in FIG. 2, the upper surfaces of the two plate springs 42 and the first plate 30 are formed. 30a. At least the surface on the first plate 30 side of the slide plate 43 is formed of a low friction material such as a fluororesin. That is, the entire slide plate 43 may be formed of a low friction material, or the surface of the slide plate 43 on the first plate 30 side may be covered with the low friction material.
- a low friction material such as a fluororesin
- the first interposition plate 45 and the second interposition plate 46 functioning to reduce the sliding resistance are interposed.
- the first interposed plate 45 constitutes a groove-shaped unit 45U that is locked to the first end 321 that is the end of the second plate 32 on the column moving direction X1 side. That is, the unit 45U includes a first interposed plate 45 along the upper surface 32a of the second plate 32 and the lower surface 30b of the first plate 30, and a counter plate facing the first interposed plate 45 and along the lower surface 32b of the second plate 32. 47, and a connecting plate 48 that connects the first interposition plate 45 and the opposing plate 47 and contacts the edge of the second plate 32 on the column moving direction X1 side.
- At least the surface on the first plate 30 side of the first interposed plate 45 is formed of a low friction material such as a fluororesin. That is, the first interposition plate 45 to the unit 45U may be formed of a low friction material, or the surface of the first interposition plate 45 on the first plate 30 side may be covered with the low friction material.
- the second intervening plate 46 is a second end 302 that is the end opposite to the column moving direction X1 of the first plate 30 and a second end that is opposite to the column moving direction X1 of the second plate 32. A unit 46U locked to the two end portions 322 is formed.
- the unit 46U includes a second interposed plate 46 along the upper surface 32a of the second plate 32 and the lower surface 30b of the first plate 30, and a counter plate that faces the second interposed plate 46 and extends along the upper surface 30a of the first plate 30. 49. Further, the unit 46U connects the second interposed plate 46 and the counter plate 49 and contacts the edge of the first plate 30 opposite to the column moving direction X1 and the second plate 32. For example, a hook-shaped hook 51 that is hooked and locked to the two end portions 322 is provided.
- each suspension bolt 25 includes a head 52, a large diameter portion 53 that is continuous with the head 52 and has a smaller diameter than the head 52, and a large diameter portion 53 that is continuous with the large diameter portion 53.
- a small diameter portion 54 having a small diameter, a step portion 55 formed between the large diameter portion 53 and the small diameter portion 54, and a screw portion 56 provided on the small diameter portion 54 are provided.
- the head 52 is provided with a tool engaging portion 57 having a hexagonal hole shape, for example.
- the large-diameter portion 53 is inserted through the annular leaf spring 42, the third bolt insertion hole 44 of the slide plate 43, and the first bolt insertion hole 31 of the first plate 30.
- 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 stepped portion 55 and the nut 34, and the suspension bolt 25 and the second plate 32 are fixed.
- the distance H1 between the head 52 and the stepped portion 55 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. Has also been enlarged. Accordingly, the leaf spring 42 elastically biases the first plate 30 toward the second plate 32 via the slide plate 43.
- the resin pin 61 for the connecting / disconnecting mechanism R1 of the first plate 30 is in the first bolt insertion hole 31 for the suspension mechanisms T1, T2 in the direction Y1 orthogonal to the column moving direction X1. It is arranged at the center position between. That is, the resin pin 61 is disposed at the center position between the pair of suspension bolts 25 in the direction Y1 orthogonal to the column moving direction X1.
- the first resin pin insertion hole 66 for the connecting / disengaging mechanism R1 of the first plate 30 is orthogonal to the column moving direction X1. It is formed in a horizontally long hole in the direction Y1. Thereby, clearances S1 and S2 are provided between the outer periphery of the collar 62 and the inner periphery of the first resin pin insertion hole 66 in the direction Y1 orthogonal to the column movement direction X1.
- FIG. 7 which is an exploded perspective view of the connecting / disconnecting mechanism R1
- FIG. 8 which is a cross-sectional view of the connecting / disconnecting mechanism R1 in the direction Y1 perpendicular to the column moving direction X1
- the resin pin 61 of R ⁇ b> 1 includes, for example, a head flange 63 having a circular cross section and a columnar shaft portion 64 having a smaller diameter than the head flange 63.
- the slide plate 43 is disposed so as to cover the top of the head flange 63 of the resin pin 61, thereby preventing the resin pin 61 from dropping off.
- a resin pin visualizing hole 65 smaller than the outer diameter of the head flange 63 is formed in the slide plate 43 so as to face the head flange 63 of the resin pin 61.
- the head flange 63 of the resin pin 61 and most of the collar 62 are inserted into the first resin pin insertion hole 66 for the connecting / disengaging mechanism R1 of the first plate 30 of the fixing bracket 23.
- a part of the collar 62 protrudes from the first resin pin insertion hole 66.
- a portion of the shaft portion 64 of the resin pin 61 that protrudes from the collar 62 is inserted into the second resin pin insertion hole 67 for the connecting / disengaging mechanism R1 of the second plate 32 of the tilt bracket 24 (movable bracket).
- the head flange 63 has a first surface 631 facing the slide plate 43 and a second surface 632 facing the first end surface 621 (upper end surface) of the collar 62. As shown in FIGS. 6 and 7, a plurality of elastic protrusions 81 protruding in the axial direction of the resin pin 61 are formed on the first surface 631 in the initial assembly state in the resin pin viewing hole 65 of the slide plate 43 in plan view.
- the resin pin visual recognition hole 65 is arranged at a position that does not interfere with the column movement direction X1 and avoids a range in which the resin pin visual recognition hole 65 passes through the column movement direction X1.
- the plurality of elastic protrusions 81 are arranged on the circumference surrounding the resin pin viewing hole 65 in a plan view so that they are arranged at equal intervals in the circumferential direction, and the phase thereof is visible when the secondary collision occurs.
- the holes 65 are arranged in an annular shape so as to avoid a range that passes through the column movement direction X1.
- the plurality of elastic protrusions 81 are in contact with the lower surface of the slide plate 43 in an elastically compressed state, and press and urge the slide plate 43 directly by an elastic repulsive force.
- the second surface 632 of the head flange 63 is provided with at least one rotation restricting convex portion 82 that protrudes toward the first end surface 621 side of the collar 62.
- the first end surface 621 of the collar 62 is provided with a rotation restriction recess 83 that engages with the rotation restriction protrusion 82.
- the outer periphery of the collar 62 has a horizontally long shape such as a long oval shape in the direction Y1 orthogonal to the column moving direction X1, and is orthogonal to the column moving direction X1 of the first plate 30.
- the first resin pin insertion hole 66 which is a horizontally long hole in the direction Y1, is fitted. Thereby, the rotation of the collar 62 is restricted by the first resin pin insertion hole 66. That is, the first resin pin insertion hole 66 regulates the rotation of the resin pin 61 around the central axis via the collar 62.
- the shaft portion 64 of the resin pin 61 is inserted into the center hole 623 of the collar 62.
- the outer diameter of the collar 62 is made larger than the outer diameter of the head flange 63 of the resin pin 61.
- the first end surface 621 in the axial direction of the collar 62 abuts against the head flange 63 of the resin pin 61, and the second end surface 622 in the axial direction of the collar 62 is caused by the suspension mechanisms T1 and T2. It is received by the upper surface 32a of the 2nd board 32 as a suspended member. Thereby, the resin pin 61 and the metal collar 62 are prevented from dropping down below the second plate 32.
- the resin is caused by the displacement of the mating surface between the second end surface 622 of the collar 62 and the second plate 32 as the second plate 32 moves with respect to the first plate 30.
- the shaft portion 64 of the pin 61 is sheared. That is, a part 641 of the shaft part 64 is separated from the remaining part.
- the shear blade configured by the inner peripheral edge of the second end surface 622 of the collar 62 has an arc shape, and the shear blade configured by the edge of the second resin pin insertion hole 67 of the second plate 32 also has an arc shape. .
- the resin pin 61 interferes with the resin pin visual recognition hole 65 in the initial assembly state of the axial elastic protrusion 81 that gives an elastic repulsive force (pressing biasing force) to the slide plate 43. Since the resin pin visualizing hole 65 is provided at a position avoiding the range where the resin pin visual recognition hole 65 passes through the column movement direction X1 in the secondary collision, the axial elastic protrusion 81 of the resin pin 61 in the secondary collision. And the resin pin visual recognition hole 65 can be prevented from being caught. As a result, it is possible to suppress the influence on the detachment load (the detachment load increases) caused by the axial elastic protrusion 81 of the resin pin 61 and the resin pin visual hole 65 being caught at the time of the secondary collision.
- the first resin pin insertion hole 66 and the outer periphery of the collar 62 that are fitted to each other have a horizontally long shape in a direction orthogonal to the column moving direction X1
- the first resin pin insertion The rotation of the collar 62 is restricted by the hole 66.
- the rotation of the resin pin 61 is regulated by the collar 62 by the engagement of the rotation regulating convex part 82 and the rotation regulating concave part 83. Therefore, at the time of the secondary collision, the resin pin 61 can be reliably prevented from rotating around its central axis and the elastic protrusion 81 being caught in the resin pin visual hole 65.
- the posture of the resin pin 61 at the time of the secondary collision can be stabilized as much as possible.
- FIG. 11 is an exploded perspective view of the resin pin 61A and the collar 62A of the connecting / disconnecting mechanism R1A according to the second embodiment of the present invention.
- FIG. 12 is a cross-sectional view of the connected state of the first plate 30 and the second plate 32 in the second embodiment, and shows a cross section in the front-rear direction (column movement direction X1) including the axis of the resin pin 61A. .
- the resin pin 61A includes a cylindrical shaft portion 64A that passes through the center hole 623A of the annular collar 62A, and a head flange 63A that is connected to one end of the shaft portion 64A. I have. As shown in FIG. 12, the head flange 63A has a first surface 63A1 that faces the slide plate 43, and an annular second surface 63A2 that faces the first end surface 62A1 of the collar 62A.
- the second surface 63A2 of the head flange 63A has a plurality of elastic protrusions 81A in the axial direction arranged annularly at equal intervals in the circumferential direction on the circumference surrounding the shaft portion 64A.
- the elastic protrusion 81A is in an elastically compressed state and is in contact with the first end face 62A1 of the collar 62A, and gives an elastic repulsive force to the collar 62A.
- the first surface 63A1 of the head flange 63 of the resin pin 61 is urged to the slide plate 43, and the second end surface 62A2 of the collar 62A is urged to the upper surface 32a of the second plate 32.
- the collar 62A is formed of a resin, ceramic, metal, or the like having a hardness higher than that of the resin pin 61A.
- the resin pin 61A may be formed of a polyacetal resin (POM), and the collar 62A may be formed of a polyamide resin (PA) having a hardness higher than that of the polyacetal resin.
- the head flange 63A of the resin pin 61A has the first surface 63A1 facing the slide plate 43 and the second surface 63A2 facing the collar 62A.
- the elastic protrusion 81A is provided not on the first surface 63A1 but on the second surface 63A2.
- the elastic protrusion 81A is in contact with the first surface 62A1 of the collar 62A, on which the second surface 62A2 is received by the second plate 32 (a suspended member), in an elastically compressed state.
- the elastic protrusion 81A indirectly applies a pressing force (elastic repulsive force) to the slide plate 43 via the first surface 63A1 of the head flange 63A of the resin pin 61A.
- FIG. 13 is an exploded perspective view of the resin pin 90 and the two-stage collar (first collar 91 and second collar 92) of the connecting / disconnecting mechanism R1B according to the third embodiment of the present invention.
- FIG. 14 is a cross-sectional view of the connection state between the first plate 30 and the second plate 32 in the third embodiment, and shows a cross section in the front-rear direction (column movement direction X1) including the axis of the resin pin 90. .
- the resin pin 90 has a cylindrical shape.
- the first collar 91 on the slide plate 43 side is press-fit to the resin pin 90, and the resin pin 90 and the first collar 91 can be moved integrally in the axial direction.
- the second collar 92 on the second plate 32 (suspended member) side is loose-fitted to the resin pin 90, and the resin pin 90 and the second collar 92 are relatively movable in the axial direction.
- the resin pin 90 has a first end surface 901 and a second end surface 902 that face each other in the axial direction. Both ends of the resin pin 90 may be formed in a tapered cone taper shape (not shown) so that the resin pin 90 can be easily inserted into the center holes 913 and 923 of both the collars 91 and 92. Both the first collar 91 and the second collar 92 have an annular shape.
- the first collar 91 has a first end surface 911 and a second end surface 912 that face each other in the axial direction.
- the second collar 92 has a first end surface 921 and a second end surface 922 that face each other in the axial direction.
- Both collars 91 and 92 are formed of a resin, ceramic, metal, or the like having a hardness higher than that of the resin pin 90.
- the resin pin 90 may be formed of polyacetal resin (POM), and the collars 91 and 92 may be formed of polyamide resin (PA) having a hardness higher than that of the polyacetal resin.
- POM polyacetal resin
- PA polyamide resin
- the first collar 91 is disposed in the first resin pin insertion hole 66
- the second collar 92 is disposed in the second resin pin insertion hole 67.
- the first end surface 911 in the axial direction of the first collar 91 and the first end surface 901 in the axial direction of the resin pin 90 are opposed to the slide plate 43.
- the first end surface 901 of the resin pin 90 may be flush with the first end surface 911 of the first collar 91, or may protrude from the first end surface 911 of the first collar 91 toward the slide plate 43. .
- a second end surface 912 in the axial direction of the first collar 91 faces the first end surface 921 of the second collar 92.
- An axial elastic protrusion 81 ⁇ / b> B provided on the second end surface 912 of the first collar 91 is in contact with the second end surface 921 of the second collar 92.
- a lower plate 93 is provided along the lower surface 32 b of the second plate 32.
- the lower plate 93 is fastened together with the slide plate 43 by suspension bolts of a suspension mechanism (corresponding to the suspension mechanisms T1 and T2 in FIG. 1) not shown in FIG.
- the lower plate 93 functions as a slide plate that slides in the column movement direction X1 together with the second plate 32 and the slide plate 43 at the time of the secondary collision.
- the lower plate 93 (corresponding to a member suspended by the suspension mechanisms T1 and T2) receives the lower end surface of the resin pin 90 and the second end surface 922 of the second collar 92, and the connecting / disconnecting mechanism R1B is Supports not to fall down.
- the same reference numerals as those of the components in the first embodiment in FIG. 9 are attached to the same components as in the first embodiment in FIG. is there.
- the first collar 91 press-fitted to the resin pin 90 arranged on the slide plate 43 side and the resin pin 90 arranged on the second plate 32 (suspended member) side.
- the second collar 92 loosely fitted to the second collar 92 is stacked in two stages in the axial direction of the resin pin 90, and the axial direction in which the first end face 921 of the second collar 92 is urged against the second end face 912 of the first collar 91.
- the elastic protrusion 81B is provided.
- the elastic protrusion 81 ⁇ / b> B indirectly applies a pressing urging force (elastic repulsive force) to the slide plate 43 via the first collar 91 and the first end surface 901 of the resin pin 90. Therefore, the posture of the resin pin 90 inserted through both the collars 91 and 92 is stabilized. Further, since the axial elastic protrusion 81B cannot be caught in the resin pin visual recognition hole 65 itself, it is possible to suppress the influence on the detachment load (the detachment load becomes large) due to the catch. it can.
- the elastic projection 81 ⁇ / b> B in the axial direction is provided on the second end surface 912 of the first collar 91.
- the shaft provided on the first end surface 921 of the second collar 92 is provided.
- An elastic protrusion (not shown) in the direction may be brought into contact with the second end surface 912 of the first collar 91.
- the second collar 92 is received by the lower plate 93 as a member suspended by the suspension mechanisms T1 and T2, but instead of this, the second plate 32 ( The second end face 922 of the second collar 92 is received by a step portion (not shown) provided on the inner periphery of the second resin pin insertion hole 67 of the suspension mechanism T1, T2).
- FIG. 15 is an exploded perspective view of the slide plate 43C, the resin pin 61 and the collar 62 of the connection / release mechanism R1 according to the fourth embodiment of the present invention.
- FIG. 16 is a cross-sectional view of the connection state between the first plate 30 and the second plate 32 in the fourth embodiment, and includes the left-right direction including the axis of the resin pin 61 (direction Y1 orthogonal to the column movement direction X1). The cross section of is shown.
- the fourth embodiment is different from the first embodiment of FIGS. 7 and 8 in the following. That is, in the first embodiment, the slide plate 43 is provided with a single resin pin visual hole 65 formed of a round hole, whereas in the fourth embodiment, the slide plate 43C is connected to the column moving direction X1. Forms a pair of resin pin visual recognition holes 65C and 65D consisting of elongated holes extending in the orthogonal direction Y1.
- the pair of resin pin visual recognition holes 65C and 65D are separated in a direction Y1 orthogonal to the column movement direction X1.
- the elastic protrusion 81 of the first surface 631 of the head flange 63 of the resin pin 61 is disposed at a position that avoids a range in which the pair of resin pin visual holes 65C and 65D pass through the column moving direction X1 in the event of a secondary collision. ing. Specifically, the elastic protrusion 81 passes between the pair of resin pin visual recognition holes 65C and 65D during the secondary collision.
- the collar 62 is longer than the head flange 63 of the resin pin 61 and protrudes from both sides of the head flange 63 in the lateral direction (direction Y1 orthogonal to the column moving direction X1).
- the pair of resin pin visual recognition holes 65C and 65D include color visual recognition areas 65C1 and 65D1 in which a part of the collar 62 can be visually recognized. That is, a part of the first surface 631 of the head flange 63 of the resin pin 61 and a part of the first end surface 621 of the collar 62 are visually recognized through the resin pin visual recognition holes 65C1 and 65D.
- the influence on the load (the separation load becomes large) can be suppressed.
- the resin pin visual recognition holes 65C and 65D including the color visual recognition areas 65C1 and 65D1 not only the presence / absence of the resin pin 61 (presence / absence of missing parts) but also the presence / absence of the collar 62 (presence / absence of missing parts) is confirmed. can do.
- a steering device with a low defect rate can be achieved.
- FIG. 17 is a cross-sectional view of the connection state of the first plate 30 and the second plate 32 in the fifth embodiment of the present invention, and includes the horizontal direction including the axis of the resin pin 61A (perpendicular to the column movement direction X1). The cross section in the direction Y1) is shown.
- the fifth embodiment of FIG. 17 is a modified form of the second embodiment of FIG. 12 showing a cross section in the column movement direction X1, and therefore, in the fifth embodiment, only the configuration different from the second embodiment will be described.
- the slide plate 43E forms a resin pin visual hole 65E composed of a long hole extending in the direction Y1 orthogonal to the column movement direction X1.
- the outer diameter of the collar 62A0 is larger than the outer diameter of the head flange 63A of the resin pin 61A.
- the resin pin visual recognition hole 65E includes a pair of color visual recognition regions 65E1 and 65E2 at which both ends of the longitudinal direction can visually recognize a part of the collar 62.
- the same reference numerals as those in the second embodiment in FIG. 12 are assigned to the same constituent elements as those in the second embodiment in FIG. is there.
- the axial elastic protrusion 81A provided on the second surface 63A2 not facing the slide plate 43E is caught in the resin pin visual hole 65E. Since it cannot occur, it is possible to suppress the influence on the separation load due to the catch (the separation load increases).
- the resin pin visual recognition hole 65E may be a long hole extending in the column moving direction X1. Any one of the pair of color visual recognition areas 65E1 and 65E2 of the resin pin visual recognition hole 65E may be eliminated.
- FIG. 18 is a cross-sectional view of the connection state of the first plate 30 and the second plate 32 in the sixth embodiment of the present invention, and includes the horizontal direction including the axis of the resin pin 90 (perpendicular to the column movement direction X1) The cross section in the direction Y1) is shown.
- the sixth embodiment of FIG. 18 is a modification of the third embodiment of FIG. 14 showing a cross section in the column movement direction X1, and therefore, in the sixth embodiment, only a configuration different from the third embodiment will be described.
- the slide plate 43F forms a resin pin visual hole 65F that is a long hole extending in a direction Y1 orthogonal to the column movement direction X1.
- the resin pin visual recognition hole 65F includes a pair of color visual recognition areas 65F1 and 65F2 in which a part of the first collar 91 can be visually recognized at both ends in the longitudinal direction. That is, a part of the first end surface 901 of the resin pin 90 and a part of the first end surface 911 of the first collar 91 are visually recognized through the resin pin visual recognition hole 65F including the color visual recognition regions 65F1 and 65F2.
- the same constituent elements as those in the third embodiment in FIG. 14 are denoted by the same reference numerals as the constituent elements in the third embodiment in FIG. is there.
- the axial elastic protrusion 81 ⁇ / b> B cannot be caught in the resin pin visual recognition hole 65 ⁇ / b> F itself.
- the influence on the separation load (the separation load increases) can be suppressed.
- the resin pin visual recognition hole 65F may be a long hole that is long in the column movement direction X1. Moreover, you may abolish any one of a pair of color visual recognition area
- FIG. 19 is a cross-sectional view of the connected state of the first plate 30 and the second plate 32 in the seventh embodiment of the present invention, and includes the horizontal direction including the axis of the resin pin 90 (perpendicular to the column movement direction X1). The cross section in the direction Y1) is shown.
- the seventh embodiment in FIG. 19 is a modification of the sixth embodiment in FIG. 18, in the seventh embodiment, only the configuration different from the sixth embodiment will be described.
- the outer diameter of the second collar 92 ⁇ / b> G is made larger than the outer diameter of the first collar 91.
- the second collar 92G includes a first end face 921G, a second end face 922G, and a center hole 923G corresponding to the first end face 921, the second end face 922, and the center hole 923 of the second collar 92 of the sixth embodiment of FIG. Have.
- the slide plate 43G forms a resin pin visual hole 65G composed of a long hole extending in the direction Y1 orthogonal to the column moving direction X1.
- the resin pin visual recognition hole 65G includes a pair of color visual recognition areas 65G1 and 65G2 in which a part of the first collar 91 and a part of the second collar 92G can be visually recognized at both ends in the longitudinal direction. That is, part of the first end face 901 of the resin pin 90, part of the first end face 911 of the first collar 91, and the second end of the second collar 92G are passed through the resin pin viewing hole 65G including the color viewing areas 65G1 and 65G2. A part of the first end surface 921G is visually recognized.
- the same reference numerals as those in the sixth embodiment in FIG. 18 are attached to the same constituent elements as those in the sixth embodiment in FIG. is there.
- the axial elastic protrusion 81B cannot be caught in the resin pin visual recognition hole 65G itself, and thus is caused by the catch.
- the influence on the separation load (the separation load increases) can be suppressed.
- the resin pin visual recognition hole 65G including the color visual recognition regions 65G1 and 65G2, not only the presence / absence of the resin pin 90 (presence / absence of missing parts) but also the presence / absence of the first color 91 and the second color 92G (shortage) Presence or absence) can also be confirmed. As a result, a steering device with a low defect rate can be achieved.
- the resin pin visual recognition hole 65G may be a long hole that is long in the column movement direction X1. Moreover, you may abolish any one of a pair of color visual recognition area
- FIG. 20 shows a schematic plan view of the connecting / disconnecting mechanism R1H in the eighth embodiment of the present invention. Since the eighth embodiment in FIG. 20 is a modification of the first embodiment in FIG. 6, only the configuration different from the first embodiment will be described in the eighth embodiment.
- head flange 63H of resin pin 61H has a quadrangular shape with four corners chamfered.
- the outer periphery of the head flange 63H is fitted in the first resin pin insertion hole 66 of the first plate 30 with a slight play in the rotational direction around the axis of the resin pin 61H.
- Elastic projections 81H in the axial direction are formed to project from the four corners of the first surface 63H1 of the head flange 63H.
- a pair of flat portions 101, 102 facing the column movement direction X ⁇ b> 1 is the first plate 30.
- the outer periphery of the collar 62H has a circular shape, and is engaged with the pair of flat portions 661 and 662 of the first resin pin insertion hole 66 of the first plate 30 in a rotatable state.
- the rotation of the collar 62H is not restricted by the first resin pin insertion hole 66 of the first plate 30.
- Notch recesses 111 to 114 are formed in the central portions of the flat portions 101 to 104 on the outer periphery of the head flange 63H.
- the pair of notch recesses 111 and 112 faces the column movement direction X1
- the other pair of notch recesses 113 and 114 faces the direction Y1 orthogonal to the column movement direction X1.
- the slide plate 43H includes a resin pin visual hole 65H that is a long hole extending in the column moving direction X1.
- the resin pin visual recognition hole 65H is passed through the pair of notch recesses 111 and 112 of the head flange 63H of the resin pin 61H at both ends in the longitudinal direction, respectively, so that the first end face 62H1 of the collar 62H can be visually recognized.
- the same constituent elements as those of the first embodiment of FIG. 6 are denoted by the same reference numerals as the constituent elements of the first embodiment of FIG. is there.
- the elastic protrusion 81 ⁇ / b> H in the axial direction cannot be caught in the resin pin visual recognition hole 65 ⁇ / b> H itself.
- the influence on the separation load (the separation load increases) can be suppressed.
- the resin pin visual recognition hole 65H including the color visual recognition areas 65H1 and 65H2 not only the presence / absence of the resin pin 61H (presence / absence of a missing part) but also the presence / absence of the collar 62H (presence / absence of a missing part) should be confirmed. Can do. As a result, a steering device with a low defect rate can be achieved. Further, since the rotation of the resin pin 61H is directly restricted by the first resin pin insertion hole 66 of the first plate 30, the resin pin 61 is interposed between the collar 62 and the resin pin 61 as in the first embodiment of FIG. It is not necessary to provide the rotation restricting elements (the rotation restricting convex portion 82 and the rotation restricting concave portion 83) for restricting the rotation, and the structure can be simplified.
- the resin pin visual recognition hole 65H is arranged at a position avoiding the range in which the resin pin visual recognition hole 65H passes the column movement direction X1 in the case of a secondary collision, the resin pin visual recognition hole 65H is May be a long hole extending in the direction Y1 perpendicular to the first end surface 62H1 of the collar 62H through the pair of cutout recesses 113 and 114. Moreover, you may abolish any one of a pair of color visual recognition area
- the shape of the resin pin visual recognition hole 65H may be a round hole or a polygonal hole instead of a long hole as long as a part of the resin pin 61H and a part of the collar 62H can be visually recognized.
- resin pin 901 ... first end face, 91 ... first collar, 912 ... second end face (opposing face), 92; 92G ... second collar, 921; 921G ... first end face (opposing face), 93 ... bottom Plates (members suspended by a suspension mechanism), 101 to 104: flat portion, 111 to 114: notched recess, R1; R1A; R1B; R1H ... coupling / detaching mechanism, T1, T2 Hanging mechanism, X1 ... column moving direction, a direction orthogonal to the Y1 ... column direction of movement
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- Mechanical Engineering (AREA)
- Steering Controls (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
Description
例えば、特許文献1の図9では、車体に固定された車体側ブラケットに、コラム軸方向に平行に延びる一対の係止切欠きが設けられている。各係止切欠きにそれぞれ複数の係止ピンにより保持された一対の係止カプセルを介して、コラム側ブラケットが支持されている。各係止カプセルは、各係止切欠きを挿通するボルトをそれぞれ介してコラム側ブラケットに結合固定されている。
本願発明者は、まず、樹脂ピンの上方を塞ぎ二次衝突時にコラム移動方向に移動するスライド板を設け、そのスライド板に対して、樹脂ピンに設けられた軸方向の弾性突起により弾性反発力を与えることを考えた。しかしながら、スライド板で樹脂ピンの上方を覆うと、製造時に、樹脂ピンの組み付けの有無を確認できなくなる。そこで、スライド板に樹脂ピンを視認するための樹脂ピン視認孔を設けることを考えた。しかしながら、二次衝突時に、軸方向の弾性突起を樹脂ピン視認孔が通過する際に弾性突起と樹脂ピン視認孔とが引っ掛り、離脱荷重に影響を及ぼす(大きくなる)という新たな課題の発生が予想されるという知見を得た。
上記構成によれば、樹脂ピンの頭部フランジが、スライド板に対向する第1面と、カラーに対向する第2面とを有しており、軸方向の弾性突起が、第1面ではなく、第2面に設けられている。軸方向の弾性突起が樹脂ピン視認孔に引っ掛ること自体が起こり得るべくもない。
上記構成によれば、第1カラーと第2カラーとの対向面の少なくとも一方に、軸方向の弾性突起を設けるので、弾性突起が樹脂ピン視認孔に引っ掛ること自体が起こり得るべくもない。
上記構成によれば、樹脂ピン視認孔を通して、樹脂ピンの組み付けの有無のみならずカラーの組み付けの有無を確認することができる。
(第1実施形態)
図1は本発明の第1実施形態のステアリング装置の概略構成を示す模式図である。図1を参照して、ステアリング装置1は、ステアリングホイール等の操舵部材2に連結されたステアリングシャフト3と、ステアリングシャフト3に自在継手4を介して連結された中間軸5と、中間軸5に自在継手6を介して連結されたピニオン軸7と、ピニオン軸7の端部近傍に設けられたピニオン7aに噛み合うラック8aを有する転舵軸としてのラック軸8とを備えている。
ステアリングコラム15は、軸方向に相対移動可能に嵌め合わされた筒状のアッパージャケット16(可動ジャケット)と、筒状のロアージャケット17と、ロアージャケット17の軸方向下端に連結されたハウジング18とを備えている。ハウジング18内には、操舵補助用の電動モータ19の動力を減速してロアーシャフト12に伝達する減速機構20が収容されている。減速機構20は、電動モータ19の回転軸(図示せず)と同行回転可能に連結された駆動ギヤ21と、駆動ギヤ21に噛み合いロアーシャフト12と同行回転する被動ギヤ22とを有している。
図2、図3に示すように、チルトブラケット24は、一対の側板41を備えており、図2に示すように、コラムブラケット26は、チルトブラケット24の一対の側板41にそれぞれ対向する一対の側板71と、一対の側板71の下端間を連結する連結板72とを備えた溝形をなしている。
図2並びに一部破断概略平面図である図4および図5に示すように、連結・離脱機構R1は、コラム移動方向X1とは直交する方向Y1に関して、一対の吊り下げ機構T1,T2の間(すなわち固定ブラケット23の第1板30の後述する一対の第1ボルト挿通孔31の間)に配置されている。具体的には、連結・離脱機構R1は、コラム移動方向X1とは直交する方向Y1に関して、一対の第1ボルト挿通孔31の間(すなわち一対の吊り下げボルト25の間)の中央位置に配置されている。
図2および図3に示すように、各吊り下げ機構T1,T2は、吊り下げボルト25と、例えば皿ばねからなる板ばね42と、ナット34等により構成されている。連結・離脱機構R1は、二次衝突時に剪断する樹脂ピン61と、樹脂ピン61の軸方向の一部に嵌合して外周が例えば長円形等の横長形状をなすカラー62とで構成されている。なお、カラー62の材質として、鉄等の金属を用いてもよいし、樹脂ピン61よりも高硬度の樹脂やセラミック等を用いてもよい。例えば、樹脂ピン61をポリアセタール樹脂(POM)で形成し、カラー62をポリアセタール樹脂よりも高硬度のポリアミド樹脂(PA)で形成してもよい。
図2、図3に示すように、チルトブラケット24(可動ブラケット)は、例えば板金により形成されている。チルトブラケット24は、第2板32と、第2板32の一対の側縁から下向きに延設された一対の側板41とを備えており、溝形をなしている。第2板32と各側板41との連結部は、図2、図3に示すように湾曲状に形成されていてもよい。
第1介在板45は、第2板32のコラム移動方向X1側の端部である第1端部321に係止された溝形のユニット45Uを構成している。すなわち、ユニット45Uは、第2板32の上面32aおよび第1板30の下面30bに沿う第1介在板45と、第1介在板45と対向し且つ第2板32の下面32bに沿う対向板47と、第1介在板45と対向板47とを連結し且つ第2板32のコラム移動方向X1側の端縁に当接する連結板48とを備えている。
第2介在板46は、第1板30のコラム移動方向X1とは反対側の端部である第2端部302および第2板32のコラム移動方向X1とは反対側の端部である第2端部322に係止されたユニット46Uを構成している。すなわち、ユニット46Uは、第2板32の上面32aおよび第1板30の下面30bに沿う第2介在板46と、第2介在板46に対向し且つ第1板30の上面30aに沿う対向板49とを備えている。また、ユニット46Uは、第2介在板46と対向板49とを連結し且つ第1板30のコラム移動方向X1とは反対側の端縁に当接する連結板50と、第2板32の第2端部322に引っ掛け係止される例えば鉤形フック状の係止部51とを備えている。
図2および図3に示すように、各吊り下げボルト25は、頭部52と、頭部52に連なり頭部52より小径の大径部53と、大径部53に連なり大径部53より小径の小径部54と、大径部53と小径部54との間に形成された段部55と、小径部54に設けられたねじ部56とを備えている。頭部52には、例えば六角孔形状の工具係合部57が設けられている。
図8に示すように、スライド板43が、樹脂ピン61の頭部フランジ63の上方を覆うように配置されることで、樹脂ピン61の上方への脱落が防止されている。また、スライド板43には、樹脂ピン61の頭部フランジ63に対向して、頭部フランジ63の外径よりも小さい樹脂ピン視認孔65が形成されている。連結・離脱機構R1の組立後に、スライド板43の樹脂ピン視認孔65を通して樹脂ピン61の頭部フランジ63を視認することにより、樹脂ピン61の組み付け忘れ等の作業不良を容易に判断することができる。
(第2実施形態)
次いで、図11は本発明の第2実施形態の連結・離脱機構R1Aの樹脂ピン61Aとカラー62Aの分解斜視図である。図12は、第2実施形態における、第1板30と第2板32との連結状態の断面図であり、樹脂ピン61Aの軸線を含む前後方向(コラム移動方向X1)の断面を示している。
カラー62Aは、樹脂ピン61Aよりも高硬度の樹脂、セラミック、金属等により形成されている。例えば樹脂ピン61Aをポリアセタール樹脂(POM)で形成し、カラー62Aを、ポリアセタール樹脂よりも高硬度のポリアミド樹脂(PA)で形成してもよい。
本第2実施形態によれば、樹脂ピン61Aの頭部フランジ63Aが、スライド板43に対向する第1面63A1と、カラー62Aに対向する第2面63A2とを有しており、軸方向の弾性突起81Aが、第1面63A1ではなく、第2面63A2に設けられている。弾性突起81Aは、第2板32(吊り下げられた部材)によって第2面62A2が受けられたカラー62Aの第1面62A1に対して、弾性的に圧縮された状態で接している。弾性突起81Aは、樹脂ピン61Aの頭部フランジ63Aの第1面63A1を介して間接的にスライド板43に押圧付勢力(弾性反発力)を付与している。
(第3実施形態)
次いで、図13は本発明の第3実施形態の連結・離脱機構R1Bの樹脂ピン90と2段のカラー(第1カラー91と第2カラー92)の分解斜視図である。図14は、第3実施形態における、第1板30と第2板32との連結状態の断面図であり、樹脂ピン90の軸線を含む前後方向(コラム移動方向X1)の断面を示している。
第1カラー91および第2カラー92は、ともに円環状をなしている。第1カラー91は、軸方向に対向する第1端面911と第2端面912とを有している。第2カラー92は、軸方向に対向する第1端面921と第2端面922とを有している。
図14に示すように、第1カラー91が第1樹脂ピン挿通孔66に配置され、第2カラー92が第2樹脂ピン挿通孔67に配置されている。第1カラー91の軸方向の第1端面911と樹脂ピン90の軸方向の第1端面901とが、スライド板43と対向している。樹脂ピン90の第1端面901は、第1カラー91の第1端面911と面一であってもよいし、第1カラー91の第1端面911よりもスライド板43側に突出していてもよい。第1カラー91の軸方向の第2端面912が、第2カラー92の第1端面921に対向している。第1カラー91の第2端面912に設けられた軸方向の弾性突起81Bが、第2カラー92の第2端面921に当接している。
本第3実施形態によれば、スライド板43側に配置された樹脂ピン90にプレスフィットされた第1カラー91と、第2板32(吊り下げられた部材)側に配置されて樹脂ピン90にルーズフィットされた第2カラー92とを、樹脂ピン90の軸方向に2段に積み重ね、第1カラー91の第2端面912に、第2カラー92の第1端面921を付勢する軸方向の弾性突起81Bを設けている。
また、図14の第3実施形態では、第2カラー92を、吊り下げ機構T1,T2により吊り下げられた部材としての下板93によって受けているが、これに代えて、第2板32(吊り下げ機構T1,T2により吊り下げられた部材に相当)の第2樹脂ピン挿通孔67の内周に設けられた段差部(図示せず)によって、第2カラー92の第2端面922を受けるようにしてもよい。
(第4実施形態)
次いで、図15は本発明の第4実施形態のスライド板43Cと、連結・離脱機構R1の樹脂ピン61とカラー62の分解斜視図である。図16は、第4実施形態における、第1板30と第2板32との連結状態の断面図であり、樹脂ピン61の軸線を含む左右方向(コラム移動方向X1とは直交する方向Y1)の断面を示している。
また、カラー視認領域65C1,65D1を含む樹脂ピン視認孔65C,65Dを通して、樹脂ピン61の組み付けの有無(欠品の有無)のみならず、カラー62の組み付けの有無(欠品の有無)も確認することができる。ひいては、不良率の少ないステアリング装置を達成することができる。
(第5実施形態)
次いで、図17は本発明の第5実施形態における、第1板30と第2板32との連結状態の断面図であり、樹脂ピン61Aの軸線を含む左右方向(コラム移動方向X1とは直交する方向Y1)の断面を示している。
また、カラー62A0の外径は、樹脂ピン61Aの頭部フランジ63Aの外径よりも大きくされている。また、樹脂ピン視認孔65Eは、長手方向の両端に、カラー62の一部を視認可能な一対のカラー視認領域65E1,65E2を含んでいる。すなわち、カラー視認領域65E1,65E2を含む樹脂ピン視認孔65Eを通して、樹脂ピン61Aの頭部フランジ63Aの第1面63A1の一部とカラー62A0の第1端面62A1の一部とが視認されることになる。
本第5実施形態によれば、図12の第2実施形態と同じく、スライド板43Eとは対向しない第2面63A2に設けられた軸方向の弾性突起81Aが樹脂ピン視認孔65Eに引っ掛ること自体が起こり得るべくもないので、前記引っ掛りに起因する離脱荷重への影響(離脱荷重が大きくなる)を抑制することができる。
なお、樹脂ピン視認孔65Eは、コラム移動方向X1に延びる長孔であってもよい。樹脂ピン視認孔65Eの一対のカラー視認領域65E1,65E2のうちの何れか一方を廃止してもよい。また、樹脂ピン視認孔65Eの形状は、樹脂ピン61Aの一部とカラー62A0の一部を視認できる形状であれば、長孔ではなくて、丸孔や多角形孔であってもよい。
(第6実施形態)
次いで、図18は本発明の第6実施形態における、第1板30と第2板32との連結状態の断面図であり、樹脂ピン90の軸線を含む左右方向(コラム移動方向X1とは直交する方向Y1)の断面を示している。
樹脂ピン視認孔65Fは、その長手方向の両端に、第1カラー91の一部を視認可能な一対のカラー視認領域65F1,65F2を含んでいる。すなわち、カラー視認領域65F1,65F2を含む樹脂ピン視認孔65Fを通して、樹脂ピン90の第1端面901の一部と第1カラー91の第1端面911の一部とが視認されることになる。
本第6実施形態によれば、図14の第3実施形態と同じく、軸方向の弾性突起81Bが樹脂ピン視認孔65Fに引っ掛ること自体が起こり得るべくもないので、前記引っ掛りに起因する離脱荷重への影響(離脱荷重が大きくなる)を抑制することができる。
なお、樹脂ピン視認孔65Fは、コラム移動方向X1に長い長孔であってもよい。また、樹脂ピン視認孔65Fの一対のカラー視認領域65F1,65F2のうちの何れか一方を廃止してもよい。また、樹脂ピン視認孔65Fの形状は、樹脂ピン90の一部と第1カラー91の一部とを視認できる形状であれば、長孔ではなくて、丸孔や多角形孔であってもよい。
(第7実施形態)
次いで、図19は本発明の第7実施形態における、第1板30と第2板32との連結状態の断面図であり、樹脂ピン90の軸線を含む左右方向(コラム移動方向X1とは直交する方向Y1)の断面を示している。
本第7実施形態によれば、図18の第6実施形態と同じく、軸方向の弾性突起81Bが樹脂ピン視認孔65Gに引っ掛ること自体が起こり得るべくもないので、前記引っ掛りに起因する離脱荷重への影響(離脱荷重が大きくなる)を抑制することができる。
なお、樹脂ピン視認孔65Gは、コラム移動方向X1に長い長孔であってもよい。また、樹脂ピン視認孔65Gの一対のカラー視認領域65G1,65G2のうちの何れか一方を廃止してもよい。また、樹脂ピン視認孔65Gの形状は、樹脂ピン90の一部と第1カラー91の一部と第2カラー92の一部とを視認できる形状であれば、長孔ではなくて、丸孔や多角形孔であってもよい。
(第8実施形態)
次いで、図20は本発明の第8実施形態における、連結・離脱機構R1Hの概略平面図を示している。図20の第8実施形態は、図6の第1実施形態の変更形態であるので、第8実施形態では、第1実施形態と異なる構成のみを説明する。
頭部フランジ63Hの外周の各平坦部101~104の中央部に、切欠き凹部111~114がそれぞれ形成されている。一対の切欠き凹部111,112は、コラム移動方向X1に対向しており、他対の切欠き凹部113,114はコラム移動方向X1とは直交する方向Y1に対向している。
本第8実施形態によれば、図6の第1実施形態と同じく、軸方向の弾性突起81Hが樹脂ピン視認孔65Hに引っ掛ること自体が起こり得るべくもないので、前記引っ掛りに起因する離脱荷重への影響(離脱荷重が大きくなる)を抑制することができる。
また、第1板30の第1樹脂ピン挿通孔66によって、樹脂ピン61Hの回転を直接規制するので、図7の第1実施形態のようにカラー62と樹脂ピン61との間に樹脂ピン61の回転を規制する回転規制要素(回転規制凸部82および回転規制凹部83)を設ける必要がなく、構造を簡素化することができる。
Claims (6)
- 車体側部材に固定され、第1樹脂ピン挿通孔と二次衝突時のコラム移動方向に延びる長孔からなる第1ボルト挿通孔とが形成された第1板を含む固定ブラケットと、
一端に操舵部材が連結されたステアリングシャフトを回転可能に支持する可動ジャケットと、
二次衝突時に前記可動ジャケットと共に前記コラム移動方向に移動するように前記可動ジャケットを支持し、前記第1板の下面に対向する第2板を含み、前記第2板に、第2樹脂ピン挿通孔と第2ボルト挿通孔とが形成された可動ブラケットと、
前記第1板の上面に沿い第3ボルト挿通孔と樹脂ピン視認孔とが形成されたスライド板と、前記第3ボルト挿通孔と前記第1ボルト挿通孔と前記第2ボルト挿通孔とを順次に挿通して前記第1板と前記第2板とを連結することで前記可動ブラケットを介して前記可動ジャケットを吊り下げる吊り下げボルトと、を含み、二次衝突時に対応するコラム移動方向に移動可能な吊り下げ機構と、
前記樹脂ピン視認孔に対向する軸方向端面を有し、前記第1樹脂ピン挿通孔と前記第2樹脂ピン挿通孔とを挿通して前記第2板を前記第1板の所定位置に連結し、二次衝突時に前記第2板を前記所定位置から前記コラム移動方向へ離脱させる樹脂ピンと、
前記吊り下げ機構により吊り下げられた部材によって直接または間接的に受けられた状態で前記樹脂ピンに嵌合された、前記樹脂ピンよりも高硬度のカラーと、を備え、
前記樹脂ピンまたは前記カラーの何れか一方は、前記スライド板を直接または間接的に付勢する軸方向に突出した弾性突起を二次衝突の際に樹脂ピン視認孔がコラム移動方向を通過する範囲を避けた位置に設ける
ステアリング装置。 - 前記第1樹脂ピン挿通孔の内周および前記カラーの外周が、前記コラム移動方向とは直交する方向に長い横長形状とされることにより、前記第1樹脂ピン挿通孔によって前記カラーの回転が規制され、
前記樹脂ピンは、前記カラーを挿通する軸部と、前記軸部の一端に連結された頭部フランジと、を含み、
前記頭部フランジは、前記スライド板に対向する第1面と、前記カラーの端面に対向する第2面と、を有し、
前記弾性突起は、前記頭部フランジの第1面において、前記樹脂ピン視認孔を避けた位置に配置され、
前記頭部フランジの第2面と前記カラーの端面との少なくとも一方に設けられた回転規制凸部が他方に設けられた回転規制凹部に嵌合することにより、前記樹脂ピンと前記カラーとの相対回転が規制される
請求項1記載のステアリング装置。 - 前記樹脂ピンは、前記カラーを挿通する軸部と、前記軸部の一端に連結された頭部フランジと、を含み、
前記第1樹脂ピン挿通孔の内周は、前記頭部フランジの外周に設けられた平坦部に係合することにより、前記樹脂ピンの回転を規制する平坦部を含み、
前記頭部フランジは、前記スライド板に対向する第1面と、前記カラーの端面に対向する第2面と、を有し、
前記弾性突起は、前記頭部フランジの第1面において、前記樹脂ピン視認孔を避けた位置に配置されている
請求項1記載のステアリング装置。 - 前記樹脂ピンは、前記カラーを挿通する軸部と、前記軸部の一端に連結された頭部フランジと、を含み、
前記頭部フランジは、前記スライド板に対向する第1面と、前記カラーの端面に対向する第2面と、を有し、
前記弾性突起は、前記頭部フランジの第2面に設けられている
請求項1記載のステアリング装置。 - 前記カラーは、前記第1樹脂ピン挿通孔に配置されて前記樹脂ピンにプレスフィットされた第1カラーと、前記第2樹脂ピン挿通孔に配置されて前記樹脂ピンにルーズフィットされた第2カラーと、を含み、
前記弾性突起は、前記第1カラーと前記第2カラーとの対向面の少なくとも一方に設けられている
請求項1記載のステアリング装置。 - 前記樹脂ピン視認孔は、前記カラーの一部を視認可能なカラー視認領域を含む
請求項1から5の何れか1項に記載のステアリング装置。
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CN201480040796.1A CN105392687B (zh) | 2013-07-18 | 2014-07-17 | 转向装置 |
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CN105392687B (zh) | 2017-04-19 |
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US9511792B2 (en) | 2016-12-06 |
EP3023319B1 (en) | 2017-10-25 |
JP2015037923A (ja) | 2015-02-26 |
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US20160176435A1 (en) | 2016-06-23 |
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