JP5135862B2 - Steering device - Google Patents

Description

  The present invention relates to a steering device, and more particularly to a steering device that can be detached from a vehicle body on the front side of a vehicle body along with a steering shaft in a secondary collision.

  To alleviate the impact when a car collides with another car and the driver collides with the steering wheel due to inertia, when the driver collides with the steering wheel, the column and the steering shaft There is a steering device that disengages from.

  In such a steering device, the vehicle body mounting bracket connected to the column is fixed to the vehicle body via a capsule made of aluminum alloy or the like, and the vehicle body mounting bracket is pulled out from the capsule by an impact load at the time of a secondary collision. Is adopted.

  The vehicle body mounting bracket of the conventional steering apparatus shown in Patent Document 1 has a substantially U-shaped notch groove that is open on the rear side of the vehicle body, and is formed on the inner surface of the notch groove on the outer surface of the capsule. A recessed groove is fitted. Furthermore, a resin pin is formed by injection molding in the through-holes formed in both the capsule and the vehicle body mounting bracket, and the resin pin is sheared at the time of a secondary collision to generate a separation load, so that the vehicle body mounting bracket (that is, the column) ) Comes out of the capsule integral with the car body.

  However, since the capsule of the above-described conventional steering device has the capsule and the vehicle body mounting bracket coupled with the resin pin, not only does the rigidity of the vehicle body mounting bracket to the vehicle body, particularly the rigidity against vibration, become insufficient, but also the vehicle body mounting. There is a problem that it takes time and effort to secure the electrical conductivity between the bracket and the vehicle body.

JP-A-8-301127

  An object of the present invention is to provide a steering device having a capsule that has a large coupling rigidity between the vehicle body mounting bracket and the vehicle body side, can ensure a current-carrying path, and can be easily attached to the vehicle body.

The above problem is solved by the following means. That is, the first invention includes a steering shaft on which a steering wheel can be mounted on the rear side of the vehicle body, a column that pivotally supports the steering shaft, and a flange portion having a notch groove opened on the rear side of the vehicle body. A vehicle body mounting bracket that is fixed to the vehicle body to support the column and that can be detached to the front side of the vehicle body during a secondary collision, a large-diameter flange portion that is larger in diameter than the groove width of the notch groove, and the notch groove A collar having a small-diameter cylindrical portion having an outer peripheral surface formed in the shape of an ellipse having a long axis in the longitudinal direction of the vehicle body, and an ellipse having a long axis in the longitudinal direction of the vehicle body. A through hole formed in a shape, and having an outer shape larger in diameter than the groove width of the notch groove, and having an elastically deformable ring formed with a hole through which the small diameter cylindrical portion can be inserted, and the flange portion Notch Around the sandwich a larger diameter flange portion and said ring of said collar, a steering device, characterized in that tightening the mounting bracket to the vehicle body by a bolt inserted through the above through hole.

A second invention is the steering device according to the first invention, wherein an outer periphery of the ring is bent in a direction away from a contact surface between the flange portion and the ring. .

A third invention is the steering device according to the first invention, wherein the collar is formed of a conductive material.

A fourth invention is the steering device according to the first invention, wherein a cylindrical bush inserted between the outer peripheral surface of the small-diameter cylindrical portion of the collar and the notch groove is formed on the upper end of the bush, A steering device comprising a claw for clamping a ring to a flange portion.

Fifth invention, the engagement in the steering apparatus of the fourth invention, the engaging groove formed on the outer peripheral surface of the small diameter cylinder portion of the collar, in the engaging groove formed on the inner peripheral surface of the bush A steering device having a possible engaging protrusion.

Sixth invention is a steering apparatus of the fourth aspect, formed on an outer peripheral surface upper end of the small diameter cylinder portion of the collar, further comprising an engaging engagement projections on the inner peripheral surface upper end of the bush A steering apparatus characterized by the above.

Seventh invention is a steering apparatus of the fourth invention, the bush is outside the outer circumference of the ring, abutment surface projecting on the vehicle body side than the contact surface between the flange portion and the ring A steering apparatus characterized by having

An eighth invention is the steering device according to the seventh invention, wherein the abutment surface is formed on the vehicle body rear side of the ring.

A ninth aspect of the present invention is the steering apparatus according to the seventh aspect, wherein the amount of protrusion of the contact surface toward the vehicle body is set larger than the plate thickness of the ring. is there.

  In the steering device of the present invention, a flange portion having a notch groove that is open on the rear side of the vehicle body is fixed to the vehicle body to support the column, and a vehicle body mounting bracket that can be detached to the front side of the vehicle body during a secondary collision, and a notch A collar having a large-diameter flange portion larger than the groove width of the groove, a small-diameter cylindrical portion that can be inserted into the notch groove, and an elliptical shape having a long axis in the longitudinal direction of the vehicle body formed at the axis of the small-diameter cylindrical portion A flange having a notch in the flange portion, and an elastically deformable ring having an outer shape larger than the groove width of the notch groove and having a hole through which the small diameter cylindrical portion can be inserted. The periphery of the groove is sandwiched between a large-diameter flange portion of the collar and a ring, and the vehicle body mounting bracket is fastened to the vehicle body with bolts inserted through the through holes.

  Therefore, when the body mounting bracket is attached to the vehicle body, the position of the collar and ring can be adjusted in the vehicle body longitudinal direction along the elliptical through hole. The manufacturing error of the vehicle body mounting bracket in the longitudinal direction of the vehicle body is absorbed, and the mounting becomes easy.

  In addition, since the elastic deformation part of the ring is elastically deformed and the body mounting bracket is attached to the vehicle body, even if there is an error in the height of the flange part, ring, and collar, these height errors are absorbed and fixed separation The vehicle body mounting bracket can be firmly attached to the vehicle body with a load. Further, since no resin pin is interposed, the vibration rigidity is high, and the energization path can be reliably ensured.

  In the following embodiments, an example in which the present invention is applied to a tilt-type steering device that can adjust the tilt angle of the steering wheel will be described.

  FIG. 1 is an overall side view of a steering apparatus according to the present invention. 2 is a cross-sectional view taken along the line AA in FIG. FIG. 3 is a plan view showing the upper vehicle body mounting bracket of FIG.

  As shown in FIGS. 1 to 3, a steering shaft 13 having a steering wheel 12 mounted on the rear side of the vehicle body is pivotally supported on an inner diameter portion of the outer column 11 by a bearing (not shown). The outer column 11 is externally fitted to the inner column 14 so as to be movable in the axial direction. A lower-side vehicle body mounting bracket 15 is pivotally supported on the vehicle body 3 by a pivot pin 16 on the front side of the vehicle body of the inner column 14. Yes.

  A distance bracket 4 (see FIG. 2) is fixed to the outer column 11 by welding. The left and right side plates 41 and 42 of the distance bracket 4 are sandwiched between the left and right side plates 23 and 24 of the upper-side vehicle body mounting bracket 2. Left and right flange portions 21, 22 that are bent outward in an L shape are integrally formed at the upper ends of the side plates 23, 24, and the flange portions 21, 22 are attached to the vehicle body 3.

  Long side grooves 231 and 241 for tilting are formed in the side plates 23 and 24. The long tilt grooves 231 and 241 are formed in an arc shape centered on the pivot pin 16 described above. Circular through holes 411 and 421 are formed in the left and right side plates 41 and 42 of the distance bracket 4 in the left and right direction of FIG.

  A round rod-shaped fastening rod 51 is inserted from the left side of FIG. 2 through the long slots for tilting 231 and 241 and the through holes 411 and 421. A cylindrical head 511 is formed at the left end of the clamping rod 51, and a non-rotating portion 512 having a rectangular cross section slightly narrower than the groove width of the long tilting groove 231 is formed at the right outer diameter portion of the head 511. Has been. The anti-rotation portion 512 is fitted into the long groove 231 for tilting to prevent the tightening rod 51 from rotating with respect to the upper-side vehicle body mounting bracket 2 and slides the tightening rod 51 along the long groove for tilt 231 when adjusting the tilt position. Move.

  A tightening nut 52, a washer 53, and an adjustment nut 54 are fitted on the outer periphery of the right end of the tightening rod 51 in this order. Are screwed into male threads 55 formed in

  An operation lever 56 is fixed to the right end surface of the tightening nut 52, and the left and right side plates 41, 42 of the distance bracket 4 can be clamped at a predetermined tilt position by the operation lever 56.

  When the operation lever 56 is rotated at the time of tilt tightening, the side nuts 23 and 24 are tightened by pushing the tightening nut 52 to the left side of FIG. 2 and simultaneously pulling the tightening rod 51 to the right side. The left and right side plates 41, 42 are fastened to the side plates 23, 24.

  When the tilt is released, the operation lever 56 is rotated in the reverse direction to release the force that pushes the tightening nut 52 to the left, and at the same time, the force that pulls the tightening rod 51 to the right is released, thereby separating the side plates 23 and 24 from each other. The tightening of the left and right side plates 41, 42 of the distance bracket 4 is released.

  As shown in FIG. 3, the left and right flange portions 21, 22 have substantially U-shaped cutout grooves 25 that are open on the rear side (right side in FIG. 3) and gradually widen toward the rear side of the vehicle body. The left and right flange portions 21 and 22 are detachably attached to the vehicle body 3 using the notch grooves 25 formed respectively. FIGS. 4 to 8 are Embodiment 1 showing a method of attaching the one flange portion 21 side to the vehicle body 3. Since the method of attaching the other flange portion 22 to the vehicle body 3 is the same as that for the one flange portion 21 side, description thereof is omitted.

  FIG. 4 is an enlarged plan view of the flange portion to which the capsule of Example 1 of the present invention is attached. 5 is an exploded perspective view of FIG. 6A is a cross-sectional view taken along the line B-B in FIG. 4, and is a cross-sectional view showing a state before bolt tightening, and FIG. 6B is an enlarged cross-sectional view of a portion P in FIG. FIG. 7 is a cross-sectional view taken along the line BB in FIG. 4 and is a cross-sectional view showing a state after bolt tightening. FIG. 8 is a cross-sectional view taken along the line CC of FIG. 4 and is a cross-sectional view showing a state before bolt tightening.

  As shown in FIGS. 4 to 8, the capsule for attaching the flange portion 21 to the vehicle body 3 includes a collar 7, a ring 8, a bush 6, and a bolt 75 (see FIG. 7). The collar 7 is formed of a conductive material, and has a large-diameter flange portion 71 having a diameter larger than the groove width W of the narrowest portion of the notch groove 25 and a groove width W of the notch groove 25. A small-diameter cylindrical portion 72 having a small outer diameter is formed, and a through-hole 73 for inserting a bolt 75 is formed in the axial center. The upper surface 71B of the large-diameter flange portion 71 can contact the lower surface 21A of the flange portion 21.

  The outer peripheral surface 77 of the small diameter cylindrical portion 72 is formed in a circular shape, the axial center through hole 73 is formed in an elliptical shape, and the elliptical long axis is formed in the longitudinal direction of the vehicle body (the lateral direction in FIG. 4). The shaft is formed in the left-right direction of the vehicle body (up-down direction in FIG. 4). As the material of the collar 7, low carbon steel, aluminum, magnesium, and the like are conceivable.

  The ring 8 has an outer shape larger than the groove width W of the notch groove 25, is formed from a conductive disc-like thin plate, and the disc-like thin plate is bent into a desired cross-sectional shape by a press. Are molded. The ring 8 is inserted between the upper surface 21B side of the flange portion 21 and the lower surface 3A of the vehicle body 3.

  A round hole 81 is formed at the center of the ring 8. The inner diameter of the round hole 81 is slightly larger than the outer diameter of the outer peripheral surface 67 of the bush 6. As a material for the ring 8, a stainless steel plate, a high-tensile steel plate, a rolled steel plate, and the like can be considered, but spring steel is most preferable. The material hardness of the ring 8 is preferably HRC35-40.

  The bush 6 has a hollow cylindrical shape on the front side of the vehicle body, and the outer diameter of the outer peripheral surface 67 is set to a dimension that fits exactly into the groove width W of the narrowest part of the notch groove 25. . The inner diameter dimension of the inner peripheral surface 68 of the bush 6 is set to a dimension that just fits the outer diameter of the outer peripheral surface 77 of the small diameter cylindrical portion 72 of the collar 7. The material of the bush 6 is preferably a resin such as polyacetal (POM) having a small friction coefficient or a metal coated with a low friction material.

  Fan-shaped claws 65 </ b> A and 65 </ b> B as shown in FIG. 4 are formed on the outer periphery of the upper end of the bush 6, and the claws 65 </ b> A and 65 </ b> B are formed to protrude radially outward from the inner diameter dimension of the round hole 81 of the ring 8. . An engagement protrusion 66 (see FIG. 6B) having a sawtooth cross section is formed on the inner peripheral surface 68 of the bush 6, and an engagement protrusion is formed on the outer peripheral surface 77 of the small-diameter cylindrical portion 72 of the collar 7. An annular engagement groove 76 that can be engaged with 66 is formed.

  The bush 6 is formed with a rear extension 61 extending toward the rear of the vehicle body. The rear extension 61 is formed with a groove 62 extending toward the rear of the vehicle at an intermediate position in the left-right direction of the vehicle. The front end of the vehicle body 62 communicates with the inner peripheral surface 68 of the bush 6.

  The width of the rear extension 61 in the left-right direction of the vehicle body is set to a dimension that fits exactly into the groove width W of the narrowest portion of the notch groove 25. Since the notch groove 25 is gradually widened toward the rear side of the vehicle body, the rear extension 61 of the bush 6 can be easily incorporated into the notch groove 25. The rear extension 61 is formed with a protruding portion 63 that protrudes toward the vehicle body 3 side rather than the upper surface 21B side of the flange portion 21 outside the outer periphery 83 of the ring 8.

  The width of the protrusion 63 is formed wider than the width of the widest portion of the notch groove 25, and a contact surface 64 facing the lower surface 3 </ b> A of the vehicle body 3 is formed on the upper surface of the protrusion 63. Yes. The contact surface 64 may be disposed outside the outer periphery 83 of the ring 8 and at a part of the outer periphery 83 of the ring 8, and the position of the contact surface 64 is most preferably on the rear side of the vehicle body. The ring 8 may be arranged on the entire circumference of the outer periphery 83.

  Accordingly, after the bush 6 is inserted into the notch groove 25 from the rear side of the vehicle body, the small diameter cylindrical portion 72 of the collar 7 is fitted into the bush 6 from the lower side of the vehicle body. The bush 6 and the collar 7 are coupled by the engagement groove 76 of the collar 7 engaging with the engagement protrusion 66 of the bush 6.

  Thereafter, when the ring 8 is pushed in from above the bush 6, the round hole 81 of the ring 8 comes into contact with the inclined surfaces 651A and 651B on the upper surfaces of the claws 65A and 65B, so that the width of the groove 62 is reduced and the bush 6 is reduced in diameter. Then, the round hole 81 of the ring 8 is fitted on the outer peripheral surface 67 of the bush 6. At the same time, the ring 8 is sandwiched between the upper surface 21B of the flange portion 21 and the lower surfaces of the claws 65A and 65B of the bush 6. As a result, the ring 8, the bush 6 and the collar 7 are joined.

  In this case, when the steering device is temporarily placed at the mounting position on the vehicle body before the bolt 75 is tightened, the ring 8, the bush 6 and the collar 7 do not come out to the vehicle body rear side of the notch groove 25. Since the temporary installation state of the steering device can be maintained, the attachment work to the vehicle body 3 is facilitated.

  Around the round hole 81 of the ring 8, an elastic deformation portion 82 having a cross-section curved in an annular shape is formed in an annular shape, and the apex 82 </ b> A side of the elastic deformation portion 82 faces the vehicle body 3 side. The points 82B and 82C face the flange portion 21 side. As shown in FIG. 8, in the state before bolt tightening, the height H1 from the lower surface 21A of the flange portion 21 to the peak apex 82A of the elastic deformation portion 82 is higher than the height H2 of the small diameter cylindrical portion 72. Is set to

  The height H3 from the lower surface 21A of the flange portion 21 to the contact surface 64 of the bush 6 is set to be lower than the height H2 of the small diameter cylindrical portion 72. The height H4 from the upper surface 21B of the flange portion 21 to the contact surface 64 of the bush 6 is set to be higher than the plate thickness T of the ring 8.

  In this state, the bolt 75 is inserted into the through hole 73 of the collar 7 and the bolt is screwed into the vehicle body 3. The through hole 73 of the collar 7 is formed in an oval shape with a long longitudinal direction of the vehicle body. Accordingly, the position of the collar 7, bush 6 and ring 8 can be adjusted in the longitudinal direction of the vehicle body by the gap between the outer diameter of the bolt and the through hole 73 during assembly. For this reason, it can be easily mounted by absorbing variations in the position of the bolt holes in the longitudinal direction of the vehicle body on the side of the vehicle body 3 and manufacturing errors in the longitudinal direction of the vehicle body between the lower body mounting bracket 15 and the upper body mounting bracket 2. Can do.

  When the bolt 75 is inserted into the through hole 73 of the collar 7 and the bolt is screwed into the vehicle body 3, the elastic deformation portion 82 of the ring 8 is crushed by the tightening force of the bolt. The bolt is tightened until the upper end surface 74 of the small diameter cylindrical portion 72 abuts against the lower surface 3A of the vehicle body 3, and the elastic deformation portion 82 of the ring 8 is crushed by the difference between the heights H1 and H2.

  As shown in FIG. 7, the flange portion 21 is fastened to the vehicle body 3 by the elasticity when the elastic deformation portion 82 of the ring 8 is crushed, and the separation load when the upper side vehicle body mounting bracket 2 is detached from the vehicle body 3 is Is set. At this time, the contact surface 64 of the bush 6 is opposed to the lower surface 3A of the vehicle body 3 with a slight gap.

  In this state, when the automobile collides with another automobile or the like, the driver collides with the steering wheel 12 due to inertia, and the impact force in the direction of raising the steering wheel 12 is applied, the flange portion 21 in FIG. The impact force acts in the direction of jumping up the rear side of the vehicle body. When the vehicle body rear side of the flange portion 21 is flipped up by this impact force, the vehicle body rear side of the elastic deformation portion 82 of the ring 8 is crushed, and the contact surface 64 of the bush 6 contacts the lower surface 3 </ b> A of the vehicle body 3.

  Therefore, in order to prevent the elastic deformation portion 82 of the ring 8 from being further crushed and increase the separation load, and to prevent the rear side of the vehicle body of the flange portion 21 from jumping up, the flange portion 21 is provided with the collar 7. The ring 8 and the bushing 6 are left on the vehicle body 3 side, and the ring 8 and the bush 6 are smoothly moved to the vehicle body front side, so that the impact during the secondary collision can be reduced.

  In the first embodiment described above, since the elastic deformation portion 82 is formed in an annular shape, it is not necessary to consider the phase of the ring 8 when the ring 8 is assembled. The part 82 may have a shape other than an annular shape, for example, a rectangle.

  Next, a second embodiment of the present invention will be described. FIG. 9 is an enlarged plan view of the flange portion to which the capsule of Example 2 of the present invention is attached. FIG. 10 is an exploded perspective view of FIG. 11A is a cross-sectional view taken along the line DD of FIG. 9 and is a cross-sectional view showing a state before bolt tightening. FIG. 11B is an enlarged cross-sectional view of a Q portion of FIG. In the following description, only structural parts different from the above-described embodiment will be described, and redundant description will be omitted. Further, the same parts will be described with the same numbers.

  Example 2 is an example in which both the through-hole 73 and the outer peripheral surface 77 of the axial center of the small-diameter cylindrical portion 72 of the collar 7 are formed in an elliptical shape. That is, as shown in FIGS. 9 to 11, in the second embodiment, the capsule for attaching the flange portion 21 to the vehicle body 3 is the collar 7, the ring 8, the bush 6, and the bolt 75 (see FIG. 11). ).

  The collar 7 is formed of a conductive material, and has a large-diameter flange portion 71 having a diameter larger than the groove width W of the narrowest portion of the notch groove 25 and a groove width W of the notch groove 25. It is composed of a small-diameter cylindrical portion 72 having a small outer diameter, and an elliptical through-hole 73 for inserting a bolt 75 is formed in the axial center.

  An outer peripheral surface 77A of the small-diameter cylindrical portion 72 is also formed in an elliptical shape, an axial through hole 73 and an elliptical long axis of the outer peripheral surface 77A are formed in the longitudinal direction of the vehicle body (the left-right direction in FIG. 9), and the short axis is the vehicle body. It is formed in the left-right direction (up-down direction in FIG. 9).

  Further, a U-shaped identification groove 79 (see FIG. 10) is formed on the outer periphery of the large-diameter flange portion 71 of the collar 7 on the extension of the elliptical long axis. Using this identification groove 79 as a mark, when the collar 7 is inserted into the notch groove 25, it can be assembled so that the direction of the long axis of the ellipse is accurately oriented in the longitudinal direction of the vehicle body.

  The ring 8 has an outer shape larger than the groove width W of the notch groove 25, is formed from a conductive disc-like thin plate, and the disc-like thin plate is bent into a desired cross-sectional shape by a press. Are molded. The ring 8 is inserted between the upper surface 21B side of the flange portion 21 and the lower surface 3A of the vehicle body 3.

  A round hole 81 </ b> A is formed at the center of the ring 8. The inner diameter of the round hole 81 </ b> A is slightly larger than the major axis of the elliptical outer peripheral surface 67 </ b> A of the bush 6.

  The bush 6 has a hollow oval cylindrical shape on the front side of the vehicle body, and the outer diameter of the oval outer peripheral surface 67A in the left-right direction of the vehicle body is just within the groove width W of the narrowest portion of the notch groove 25. The dimensions are set to fit. The inner diameter of the inner peripheral surface 68 </ b> A of the bush 6 is formed in an elliptical shape having a size that just fits the elliptical outer peripheral surface 77 </ b> A of the small-diameter cylindrical portion 72 of the collar 7.

  Fan-shaped claws 65A and 65B as shown in FIG. 9 are formed on the outer periphery of the upper end of the bush 6, and the claws 65A and 65B are formed so as to protrude in a circular shape radially outward from the inner diameter of the round hole 81A of the ring 8. ing. Further, an engagement protrusion 78 is formed on the outer periphery of the upper end of the outer peripheral surface 77A of the small diameter cylindrical portion 72 of the collar 7 so as to protrude radially outward from the inner peripheral surface 68A of the bush 6.

  The bush 6 is formed with a rear extension 61 extending toward the rear of the vehicle body. The rear extension 61 is formed with a groove 62 extending toward the rear of the vehicle at an intermediate position in the left-right direction of the vehicle. The front end of the vehicle body 62 communicates with the inner peripheral surface 68 </ b> A of the bush 6.

  The width of the rear extension 61 in the left-right direction of the vehicle body is set to a dimension that fits exactly into the groove width W of the narrowest portion of the notch groove 25. Since the notch groove 25 is gradually widened toward the rear side of the vehicle body, the rear extension 61 of the bush 6 can be easily incorporated into the notch groove 25. The rear extension 61 is formed with a protruding portion 63 that protrudes toward the vehicle body 3 side rather than the upper surface 21B side of the flange portion 21 outside the outer periphery 83 of the ring 8.

  The width of the protrusion 63 is formed wider than the width of the widest portion of the notch groove 25, and a contact surface 64 facing the lower surface 3 </ b> A of the vehicle body 3 is formed on the upper surface of the protrusion 63. Yes. The contact surface 64 is formed outside the outer periphery 83 of the ring 8.

  Accordingly, after the bush 6 is inserted into the notch groove 25 from the rear side of the vehicle body, the small diameter cylindrical portion 72 of the collar 7 is fitted into the bush 6 from the lower side of the vehicle body. The bush 6 and the collar 7 are coupled by the engagement protrusion 78 of the collar 7 engaging with an inclined surface 69 formed at the upper end of the inner peripheral surface 68 </ b> A of the bush 6.

  Thereafter, when the ring 8 is pushed in from above the bush 6, the round hole 81A of the ring 8 comes into contact with the inclined surfaces 651A and 651B on the upper surfaces of the claws 65A and 65B, so that the width of the groove 62 is reduced and the bush 6 is reduced in diameter. The round hole 81 </ b> A of the ring 8 is fitted on the outer peripheral surface 67 </ b> A of the bush 6. At the same time, the ring 8 is sandwiched between the upper surface 21B of the flange portion 21 and the lower surfaces of the claws 65A and 65B of the bush 6. As a result, the ring 8, the bush 6 and the collar 7 are joined.

  In this case, when the steering device is temporarily placed at the mounting position on the vehicle body before the bolt 75 is tightened, the ring 8, the bush 6 and the collar 7 do not come out to the vehicle body rear side of the notch groove 25. Since the temporary installation state of the steering device can be maintained, the attachment work to the vehicle body 3 is facilitated.

  Around the round hole 81A of the ring 8, an elastic deformation portion 82 having a mountain-shaped cross section is formed in an annular shape, the mountain-shaped apex 82A side of the elastic deformation portion 82 faces the vehicle body 3, and the mountain-shaped bottom The points 82B and 82C face the flange portion 21 side.

  In this state, the bolt 75 is inserted into the through hole 73 of the collar 7 and the bolt is screwed into the vehicle body 3. The through hole 73 of the collar 7 is formed in an oval shape with a long longitudinal direction of the vehicle body. Therefore, the position of the collar 7, bush 6, and ring 8 can be adjusted in the longitudinal direction of the vehicle body by the gap between the outer diameter of the bolt and the through hole 73 when assembled. The bolt holes can be easily mounted by absorbing variations in the positions of the bolt holes and manufacturing errors in the longitudinal direction of the vehicle body between the lower-side vehicle body mounting bracket 15 and the upper-side vehicle body mounting bracket 2.

  In the second embodiment, since both the through-hole 73 and the outer peripheral surface 77A of the collar 7 are formed in an elliptical shape, it is easier to mold the collar 7 than in the case where one is an elliptical shape. 7 can be reduced. Moreover, in the said Example 2, since the center of the ring 8 is not an elliptical hole but the round hole 81A is formed, when assembling the ring 8, it can be assembled without minding the phase of the ring 8.

  In the above embodiment, even if there is an error in the height of the flange portion 21, the ring 8, and the small-diameter cylindrical portion 72 of the collar 7, the ring 8 is crushed, so that the error in these heights is absorbed. Thus, the upper-side vehicle body mounting bracket 2 can be mounted to the vehicle body 3. In addition, since the mounting method does not involve a resin pin, vibration rigidity is high, and an energization path is reliably ensured.

  In the above embodiment, the elastic deformation portion 82 can be fastened to the vehicle body 3 and the flange portion 21 in a wider area when the elastic deformation portion 82 is away from the center of the ring 8. The rigidity is improved, which is preferable.

  In the above embodiment, the mountain-shaped apex 82A side of the elastic deformation portion 82 faces the vehicle body 3 side, and the mountain-shaped bottom points 82B, 82C face the flange portion 21 side. Depending on the size of the mounting area on the portion 21 side, the mountain-shaped apex 82A side may be the flange portion 21 side, and the mountain-shaped bottom points 82B and 82C may face the vehicle body 3 side.

  Furthermore, in the above embodiment, the ring 8 is inserted between the vehicle body 3 and the upper surface 21B of the flange portion 21 and the collar 7 is in contact with the lower surface 21A side of the flange portion 21. The collar 7 may be inserted between the upper surface 21B and the ring 8 may be brought into contact with the lower surface 21A side of the flange portion 21. Moreover, in the said Example, you may replace the material of the bush 6 with the material which coated metals, such as aluminum and iron, or a low friction material.

  In the above embodiment, the case where the present invention is applied to a tilt type steering apparatus capable of only tilt position adjustment has been described. However, a tilt / telescopic type steering apparatus capable of both tilt position adjustment and telescopic position adjustment is described. The present invention may be applied to.

1 is an overall side view of a steering apparatus according to the present invention. It is AA sectional drawing of FIG. It is a top view which shows the upper side vehicle body mounting bracket of FIG. It is an enlarged plan view of the flange part which attached the capsule of Example 1 of this invention. FIG. 5 is an exploded perspective view of FIG. 4. (1) is BB sectional drawing of FIG. 4, and sectional drawing which shows the state before volt | bolt tightening, (2) is the P section expanded sectional view of (1). It is BB sectional drawing of FIG. 4, and is sectional drawing which shows the state after bolt fastening. It is CC sectional drawing of FIG. 4, and is sectional drawing which shows the state before bolt fastening. It is an enlarged plan view of the flange part which attached the capsule of Example 2 of this invention. FIG. 10 is an exploded perspective view of FIG. 9. (1) is DD sectional drawing of FIG. 9, and sectional drawing which shows the state before bolt fastening, (2) is the Q section expanded sectional view of (1).

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Outer column 12 Steering wheel 13 Steering shaft 14 Inner column 15 Lower side vehicle body mounting bracket 16 Pivot pin 2 Upper side vehicle body mounting bracket 21, 22 Flange part 21A Lower surface 21B Upper surface 23, 24 Side plate 231,241 Long groove for tilt 25 Notch groove 3 Car body 3A Lower surface 4 Distance bracket 41, 42 Side plate 411, 421 Through hole 51 Tightening rod 511 Head 512 Non-rotating portion 52 Tightening nut 53 Washer 54 Adjustment nut 55 Male screw 56 Operation lever 6 Bush 61 Rear extension 62 Groove 63 Projection 64 Contact surface 65A, 65B Claw 651A, 651B Inclined surface 66 Engagement protrusion 67 Outer surface 67A Outer surface 68 Inner surface 68A Inner surface 69 Inclined surface 7 Color 71 Large diameter hula G portion 71B upper surface 72 small diameter cylindrical portion 73 through hole 74 upper end surface 75 bolt 76 engaging groove 77 outer peripheral surface 77A outer peripheral surface 78 engaging projection 79 identification groove 8 ring 81 round hole 81A round hole 82 elastic deformation portion 82A apex 82B, 82C Bottom 83 outer circumference

Claims (9)

Steering shaft that can be fitted with a steering wheel on the rear side of the vehicle body,
A column that pivotally supports the steering shaft,
A vehicle body mounting bracket that supports the column by fixing a flange portion having a notch groove that is open on the rear side of the vehicle body to the vehicle body, and that can be detached to the front side of the vehicle body at the time of a secondary collision,
A large-diameter flange portion having a diameter larger than the groove width of the notch groove, and a small-diameter cylindrical portion having an outer peripheral surface that is insertable into the notch groove and is formed in an elliptical shape having a longitudinal axis in the vehicle body direction. Having color,
A through-hole formed in the axis of the small-diameter cylindrical portion and formed in an elliptical shape with the longitudinal direction of the vehicle body being a long axis
It has an outer shape having a diameter larger than the groove width of the notch groove, and includes an elastically deformable ring in which a hole through which the small diameter cylindrical portion can be inserted is formed
A steering device characterized in that a periphery of a notch groove of the flange portion is sandwiched between the large-diameter flange portion of the collar and the ring, and the vehicle body mounting bracket is fastened to the vehicle body with a bolt inserted into the through hole. The steering apparatus according to claim 1, wherein
The steering device according to claim 1, wherein an outer periphery of the ring is bent in a direction away from a contact surface between the flange portion and the ring. The steering apparatus according to claim 1, wherein
A steering device, wherein the collar is formed of a conductive material. The steering apparatus according to claim 1, wherein
A cylindrical bush inserted between the outer peripheral surface of the small-diameter cylindrical portion of the collar and the notch groove;
A steering device comprising a claw formed at an upper end of the bush and sandwiching the ring with a flange portion. The steering apparatus according to claim 4 , wherein
An engagement groove formed on the outer peripheral surface of the small-diameter cylindrical portion of the collar,
A steering apparatus comprising an engagement protrusion formed on an inner peripheral surface of the bush and engageable with the engagement groove. The steering apparatus according to claim 4 , wherein
A steering apparatus comprising an engagement protrusion formed on an upper end of an outer peripheral surface of the small-diameter cylindrical portion of the collar and engageable with an upper end of an inner peripheral surface of the bush. The steering apparatus according to claim 4 , wherein
The said bush has the contact surface which protruded in the vehicle body side rather than the contact surface of the said flange part and a ring outside the outer periphery of the said ring, The steering device characterized by the above-mentioned. The steering apparatus according to claim 7 , wherein
The steering device according to claim 1, wherein the contact surface is formed on a vehicle body rear side of the ring. The steering apparatus according to claim 7 , wherein
The steering device according to claim 1, wherein a protrusion amount of the contact surface toward the vehicle body is set larger than a plate thickness of the ring.

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