Abstract: A steering system includes: a first tooth member provided with a first tooth row that includes a plurality of first teeth each of which has a tooth trace extending in a lateral direction and which are aligned along a tilt direction, the first tooth row being elastically deformable in the lateral direction, and a second tooth member including a second tooth row that includes a plurality of second teeth each of which has a tooth trace extending in the lateral direction and which are aligned along the tilt direction, the second tooth member facing the first tooth member in the lateral direction. The first tooth member is supported by an upper bracket such that the first tooth row is disposed away from the upper bracket in the lateral direction. The second tooth member is movable in the tilt direction along with a column jacket.

Abstract: A steering system includes: a first tooth member provided with a first tooth row that includes a plurality of first teeth each of which has a tooth trace extending in a lateral direction and which are aligned along a tilt direction, the first tooth row being elastically deformable in the lateral direction, and a second tooth member including a second tooth row that includes a plurality of second teeth each of which has a tooth trace extending in the lateral direction and which are aligned along the tilt direction, the second tooth member facing the first tooth member in the lateral direction. The first tooth member is supported by an upper bracket such that the first tooth row is disposed away from the upper bracket in the lateral direction. The second tooth member is movable in the tilt direction along with a column jacket.

Abstract: A steering apparatus having a stationary bracket fixed to a vehicle body including a pair of first side plates; a receiving portion provided on the steering column for receiving one end of a conductive member; a pair of second side plates; a conductive cylindrical shaft secured between the pair of first side plates and inserted through the pair of the second side plates; and a plate-shaped conductive member interposed between the receiving portion and an outer peripheral surface of the cylindrical shaft. The conductive member includes first and second bow springs that fit the cylindrical shaft resiliently. The first bow spring is interposed between the second bow spring and the receiving portion, a first contact portion of the second bow spring is pressed to the outer peripheral surface of the cylindrical shaft, and a second contact portion of the first bow spring is pressed to the receiving portion.

Abstract: A steering apparatus having a stationary bracket fixed to a vehicle body including a pair of first side plates; a receiving portion provided on the steering column for receiving one end of a conductive member; a pair of second side plates; a conductive cylindrical shaft secured between the pair of first side plates and inserted through the pair of the second side plates; and a plate-shaped conductive member interposed between the receiving portion and an outer peripheral surface of the cylindrical shaft. The conductive member includes first and second bow springs that fit the cylindrical shaft resiliently. The first bow spring is interposed between the second bow spring and the receiving portion, a first contact portion of the second contact portion of the first bow spring is pressed to the receiving portion.

Abstract: A shaft body has an engagement portion with a slip-off preventing groove, and a positioning recess extending from the engagement portion. A shaft joint having an engagement groove to be engaged with the engagement portion and a bore facing the engagement groove is provided with a flexible member which is provided on an outer side in a longitudinal direction of the engagement groove to be engaged with the positioning recess. When an insufficient amount of engagement prevents engagement in the correct position, the engagement portion contacts with the flexible member and prevents the shaft body from engaging with the shaft joint. When canceling the coupling for maintenance, etc., the engagement of the flexible member with the positioning recess is cancelled by deflecting the flexible member in a width direction of the engagement groove. Consequently, the shaft body can be easily pulled out in a longitudinal direction of the engagement groove.

Abstract: A tilt steering assembly includes a support shaft extended along a tilt central axis. The support shaft is conductively assembled to a steering column and is unitarily rotated with the steering column during tilt adjustment. A resilient conductive member is interposed between a conductive end member provided at an end of the support shaft and a conductive fixed side plate including a support hole for supporting the support shaft. The steering column is grounded via the support shaft, the end member, the conductive member and the fixed side plate.

Abstract: A steering assembly includes a steering column including a column housing for retaining a column tube, and a reinforcing member for reinforcing an end of the column tube. The column housing includes a positioning portion, and a fitting hole having an aperture at the positioning portion. The column tube includes an end fitted in the fitting hole. The reinforcing member includes a sleeve having a first and a second end, and a flange extended radially outwardly from the first end of the sleeve. The sleeve is fixed as fitted on an outer periphery of an end of the column tube and inserted in the fitting hole at the second end thereof. The flange is abutted on the positioning portion of the column housing, for axially and/or radially positioning the column tube.

Abstract: The coupling structure includes: a shaft body 1 having an engagement portion 11 with a slip-off preventing groove; a shaft joint body 2 having an engagement groove 21 with which the engagement portion 11 is engaged and bores 22 and 23 facing the engagement groove 21; a locking body 3 press-fitted into the bore 23; and a plate body 5 having regulating tongues 51 for regulating movement of the shaft body 1, a supported portion 56 extending from the regulating tongues 51 and supported between the locking body 3 and the shaft joint body 2, and a projection 57 projecting from the supported portion 56. The shaft joint body 2 and/or the locking body 3 have a recessed portion 27 into which the projection 57 is fitted.

Abstract: A first housing rotatably supports a steering shaft having an end portion coupled to a steering wheel. A second housing engages with the first housing via two impact energy absorbing rings separate from each other in the axial direction. The first housing and the second housing are relatively movable in the axial direction. One of the first housing and the second housing has first and second impact energy absorbing protrusions projected from positions between the impact energy absorbing rings separately in the axial direction so as to contact with the circumferential surface of the other of the first housing and the second housing. The impact energy absorbing protrusions therefore reduce the load applied to the impact energy absorbing rings in usual steering. Further, the impact energy absorbing rings reduce the load due to frictional resistance in impact energy absorption.

Abstract: Engagement parts 52c of the locking device for a steering shaft are formed on a side face of a driven gear of a reduction gear mechanism which is fastened to a steering shaft 2. Since a locking part 6a is arranged near the reduction gear mechanism, elements related to a locking function can be removed from the key cylinder of the engine key, so that the key cylinder of the engine key can be downsized, or can be arranged in another position. Consequently, even in a state where a reduction gear mechanism, a steering assist motor and the like are arranged in the middle of the steering shaft, a longer stroke of the impact absorbing mechanism in comparison with conventional mechanisms can be ensured, utilizing a decrease in length of the downsized or reduced key cylinder in the axial direction of the steering shaft 2.

Abstract: A tilt steering assembly includes a support shaft extended along a tilt central axis. The support shaft is conductively assembled to a steering column and is unitarily rotated with the steering column during tilt adjustment. A resilient conductive member is interposed between a conductive end member provided at an end of the support shaft and a conductive fixed side plate including a support hole for supporting the support shaft. The steering column is grounded via the support shaft, the end member, the conductive member and the fixed side plate.

Abstract: A steering assembly includes a steering column including a column housing for retaining a column tube, and a reinforcing member for reinforcing an end of the column tube. The column housing includes a positioning portion, and a fitting hole having an aperture at the positioning portion. The column tube includes an end fitted in the fitting hole. The reinforcing member includes a sleeve having a first and a second end, and a flange extended radially outwardly from the first end of the sleeve. The sleeve is fixed as fitted on an outer periphery of an end of the column tube and inserted in the fitting hole at the second end thereof. The flange is abutted on the positioning portion of the column housing, for axially and/or radially positioning the column tube.

Abstract: A shaft body has an engagement portion with a slip-off preventing groove, and a positioning recess extending from the engagement portion. A shaft joint having an engagement groove to be engaged with the engagement portion and a bore facing the engagement groove is provided with a flexible member which is provided on an outer side in a longitudinal direction of the engagement groove to be engaged with the positioning recess. When an insufficient amount of engagement prevents engagement in the correct position, the engagement portion contacts with the flexible member and prevents the shaft body from engaging with the shaft joint. When canceling the coupling for maintenance, etc., the engagement of the flexible member with the positioning recess is cancelled by deflecting the flexible member in a width direction of the engagement groove. Consequently, the shaft body can be easily pulled out in a longitudinal direction of the engagement groove.

Abstract: The coupling structure includes: a shaft body 1 having an engagement portion 11 with a slip-off preventing groove; a shaft joint body 2 having an engagement groove 21 with which the engagement portion 11 is engaged and bores 22 and 23 facing the engagement groove 21; a locking body 3 press-fitted into the bore 23; and a plate body 5 having regulating tongues 51 for regulating movement of the shaft body 1, a supported portion 56 extending from the regulating tongues 51 and supported between the locking body 3 and the shaft joint body 2, and a projection 57 projecting from the supported portion 56. The shaft joint body 2 and/or the locking body 3 have a recessed portion 27 into which the projection 57 is fitted.

Abstract: A first housing 3 for rotatably supporting a steering shaft having an end portion coupled to a steering wheel, or a second housing 5 engaged with the first housing 3 via two impact energy absorbing rings 6 and 7 separated in the axial direction so as to be relatively movable in the axial direction, has first and second impact energy absorbing protrusions 8 and 9 projected from positions between the impact energy absorbing rings 6 and 7 separately in the axial direction so as to contact with the circumferential surface of the other of the first housing 3 and the second housing 5. The impact energy absorbing protrusions 8 and 9 therefore can reduce the load applied to the impact energy absorbing rings 6 and 7 in usual steering and the impact energy absorbing rings 6 and 7 can reduce the load due to frictional resistance in impact energy absorption.

Abstract: A covering member 13 is attached for covering a shaft coupling portion 10a of a yoke 10. Provided at the covering member 13 is an L-shaped salient tongue 13c which projects inwardly of the shaft coupling portion 10a. A groove portion 12f is formed at a bolt-width portion 12a of a pinion shaft 12. The groove portion 12f has a width in the axial direction with a center at a position which opposes the salient tongue 13c when the bolt-width portion 12a is arranged at a set position in the shaft coupling portion 10a. When the bolt-width portion 12a of the pinion shaft 12 is inserted through an opening portion 10g of the shaft coupling portion 10a, insertion is prohibited unless the salient tongue 13c is inserted into the groove portion 12f, so that a problem of poor insertion positioning of a shaft in a yoke is solved.

Abstract: Engagement parts 52c of the locking device for a steering shaft are formed on a side face of a driven gear of a reduction gear mechanism which is fastened to a steering shaft 2. Since a locking part 6a is arranged near the reduction gear mechanism, elements related to a locking function can be removed from the key cylinder of the engine key, so that the key cylinder of the engine key can be downsized, or can be arranged in another position. Consequently, even in a state where a reduction gear mechanism, a steering assist motor and the like are arranged in the middle of the steering shaft, a longer stroke of the impact absorbing mechanism in comparison with conventional mechanisms can be ensured, utilizing a decrease in length of the downsized or reduced key cylinder in the axial direction of the steering shaft 2.

Abstract: A ball spline joint interconnecting an inner shaft and an outer shaft in mutually loose-fitted relation as allowing the shafts to integrally rotate and relatively move from each other in an axial direction. Raceway grooves are respectively formed in the inner shaft and the outer shaft in face-to-face relation and are extended in the axial direction. A plurality of balls are interposed between the corresponding raceway grooves of the inner shaft and the outer shaft, forming an array along the axial direction. A resilient member biases an array-end ball in an angled direction relative to the axial direction.

Abstract: A shaft-and-yoke coupling structure includes a presser plate which covers outer surface of a U-shaped shaft insertion portion of a yoke and which has claws bent toward an inner surface of each end portion of the shaft insertion portion. The claws press the shaft inserted into the shaft insertion portion, and this pressing by the claws prevents the shaft from being axially decentered. Also, the shaft is temporarily secured to the yoke with the claws, a work for bolting the shaft is facilitated. Thus, the shaft-and-yoke coupling structure is superior in workability and capable of correct assembling shaft and yoke.

Abstract: An expansion shaft includes a first and a second shaft section aligned on the same axis. The second shaft section is inserted in a fit hole of the first shaft section while both the shaft sections are interconnected via a spline or serration. A resilient member is provided which possesses a single snap ring of C-shape fitted on a thin shaft portion of the second shaft section. An arm is axially extended from the snap ring. The arm resiliently presses against an inner circumferential surface of the fit hole for preventing the shaft sections from radially vibrating relative to each other.