JP4945922B2 - Steering device - Google Patents

Description

  The present invention relates to a steering device, and more particularly to a technique for absorbing a load when an occupant moves forward in a frontal collision of a vehicle.

  Conventionally, as a means for absorbing the load when the occupant moves forward in the case of a vehicle frontal collision, an airbag device that absorbs the load behind the vehicle rather than the steering wheel, or the steering shaft strokes in the axial direction by the load from the occupant A collapsible mechanism that absorbs a load is known.

  Furthermore, a steering device is known in which the steering member is divided into a fixed member and a movable member that can be moved relative to each other, and energy is absorbed between the two to improve energy absorption performance. That is, in this steering device, the steering member that supports the steering column is divided into a fixed member that is fixed to the vehicle body and a movable member that is movable with respect to the fixed member and supports the steering member. A guide means is provided between the movable member and the fixed member for guiding the movable member to slide forward with a predetermined load or more (see, for example, Patent Document 1).

In this conventional steering device, when a load ahead of the vehicle is input to the steering wheel, the movable member of the steering member is slidably guided forward of the vehicle by the guide means with respect to the fixed member. Absorbs the horizontal component of.
JP 2002-284018 A

  In such a conventional steering device, in order to further enhance the load absorption performance, the distance between the steering wheel at the front end of the steering shaft and the dash panel at the front end of the passenger compartment is increased, and the stroke amount of the steering wheel toward the front of the vehicle is increased. Need to expand.

  However, if the steering wheel is arranged away from the dash panel in order to increase the stroke amount in this way, the passenger space is reduced.

  Therefore, it is difficult to ensure both load absorption performance and passenger space in a limited space.

  Accordingly, an object of the present invention is to provide a steering device capable of ensuring both load absorption performance and occupant space in a limited space.

  The present invention has been made in view of the above circumstances, and at the time of a vehicle collision determination, at least the steering shaft is moved rearward of the vehicle, and the steering accompanying the load absorption by the first absorption means and the second absorption means. A steering device characterized in that a load absorption stroke amount of a wheel is increased.

  According to the present invention, when the collision of the vehicle is determined, the steering column is moved and fixed to the rear of the vehicle together with the steering shaft and the steering wheel, and the load absorption stroke amount of the steering wheel is increased.

  Therefore, during normal times, the steering wheel is arranged at a position where the passenger space can be secured, and when the vehicle collides, the steering wheel is moved to the rear of the vehicle as compared with the normal time, and the load absorption start point of the first absorbing means is arranged at the rear of the vehicle. In addition, the load absorption start point of the second absorption means is arranged at the rear of the vehicle, and the load absorption stroke amount can be increased to improve the load absorption performance.

  Therefore, in the limited space, it is possible to achieve both the securing of the passenger space and the improvement of the load absorption performance.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  The steering apparatus according to this embodiment includes a steering shaft 2 having a steering wheel 1 at a tip on the vehicle rear side, a steering column 4 that rotatably supports the steering shaft 2, and a support that supports the steering column 4 on a vehicle body. Means 5, first absorbing means (driver airbag device 12) that is provided on the steering wheel 1 and absorbs the occupant's forward moving load at the time of a frontal collision of the vehicle, and steering ahead of the steering wheel 1. A steering device that is provided on the shaft 2 and includes a second absorbing means (load absorbing portion 2c) that absorbs the vehicle forward moving load, and at least the steering shaft 2 is moved to the rear of the vehicle when a vehicle collision is determined. The load is absorbed by the first absorption means and the second absorption means. A steering device is characterized in that so as to enlarge the load absorbing stroke amount of the steering wheel 1 due to.

  A steering apparatus according to Example 1 of the best mode of the present invention will be described with reference to FIGS.

  First, in terms of configuration, the steering wheel 1 shown in FIG. 1 is supported at the front end of the steering shaft 2 shown in FIG.

  The steering shaft 2 is configured such that the upper shaft 2a and the lower shaft 2b are constrained in the rotational direction by, for example, spline coupling, and can be moved in the reduction direction in the axial direction.

  And between the upper shaft 2a and the lower shaft 2b, the load absorption part (2nd absorption means) 2c generally called a collapsible steering mechanism is provided. That is, the load absorbing portion 2c shortens and absorbs the load when a forward load is input from the occupant to the steering wheel 1 at the time of a vehicle front collision.

  The lower shaft 2b is connected to a steering gear box (not shown) located in front of the dash panel 3 (see FIG. 7) via a universal joint (not shown). In each figure, the arrow FR indicates the front of the vehicle, the arrow UP indicates the upper side of the vehicle, and the arrow R indicates the right direction in the vehicle width direction.

  The upper shaft 2 a of the steering shaft 2 is rotatably supported by the steering column 4.

  Further, the steering column 4 is supported by a dash panel 3 as a vehicle body by a support means 5. In the first embodiment, the support means 5 includes a support bracket 51, a steering member 52, and a mount member 53.

  That is, the steering member 52 is a metal cylindrical member, and extends in the vehicle width direction, and both ends in the vehicle width direction are provided with mount members 53, 53 via the rear moving means 6 described later. It is supported by.

  These mount members 53, 53 extend in the vehicle front-rear direction and support portions 53a, 53a for supporting the steering member 52, and a mounting panel 53b coupled to the vehicle front end portion of the support portions 53a, 53a, 53b. The support portion 53a is formed in a channel shape formed in a substantially U-shaped cross section by a metal upper plate 53c, a side plate 53d, and a lower plate 53e. The mounting panel 53b is coupled to the end of the support portion 53a by welding or the like, and is fixed to the dash panel 3 by bolts / nuts or welding.

  The steering member 52 supports an instrument panel and an air conditioner (not shown), and a knee protector bracket 9 constituting a knee protector. This knee protector bracket 9 absorbs a load that moves forward of the vehicle by receiving the knee portion when the occupant moves forward from the driver seat and front passenger seat, not shown, during a frontal collision of the vehicle. At the vehicle front position of the driver's seat and the passenger seat, it is arranged inside the instrument panel (not shown) (vehicle front).

  Further, the steering device of the first embodiment is provided with a driver seat airbag device 12 and a passenger seat airbag device 13 (see FIG. 3). The driver's seat airbag device 12 is first absorbing means that first absorbs the movement of the occupant forward of the vehicle due to a frontal vehicle collision at a position behind the steering wheel 1 relative to the steering wheel 1. It is a well-known configuration that is provided and deploys the bag by gas pressure by the inflator 12a. The passenger-seat airbag device 13 is disposed in the vehicle front position of the passenger seat on the instrument panel (not shown), and the passenger-seat occupant moves forward to the vehicle in the same manner as the driver-seat airbag device 12. The bag which expand | deploys with the gas pressure of the inflator 13a is absorbed.

  Next, the backward movement means 6 provided between the steering member 52 and the mount member 53 in the support means 5 will be described.

  The rearward movement means 6 is for moving the steering member 52 and the steering column 4 supported thereby to the rear of the vehicle with respect to the mount member 53 fixed to the dash panel 3 as the vehicle body.

  The rearward movement means 6 includes a movable member 61, a slide guide means 62, an inflator 63 as a driving means, and an inflator receiving member 64.

  The movable member 61 is formed in a substantially square cylindrical shape by an upper plate 61a, side plates 61b and 61b, and a lower plate 61c made of a metal plate, and the side plates 61b and 61b on the center side of the vehicle are at the vehicle width direction end of the steering member 52. It is fixed. And it is supported by the support part 53a as a fixing member of the back movement means 6 so that a slide movement is possible in the vehicle front-back direction.

  The slide guide means 62 guides the slide direction when the movable member 61 slides with respect to the support portion 53a toward the rear of the vehicle, and includes a slide guide hole 62a and a guide pin 62b. The slide guide hole 62a is formed in a long hole shape extending in the vehicle front-rear direction on the upper plate 53c and the lower plate 53e of the support portion 53a. As shown in FIG. 4, the guide pin 62b protrudes from the upper plate 61a and the lower plate 61c toward the vehicle lower side and the vehicle upper side in the movable member 61, and is slidably inserted into the slide guide hole 62a. Therefore, the movable member 61 can slide in the vehicle front-rear direction within a range in which the guide pin 62b is regulated by the slide guide hole 62a.

  As shown in FIGS. 1 and 3, the inflator 63 is disposed and attached inside the movable member 61 in the remaining space portion in which the support portion 53 a is inserted into the movable member 61, and from an end surface facing the front of the vehicle. A driving force is applied to the movable member 61 by ejecting gas. This gas can be generated by using a pre-filled high-pressure gas, by using chemicals, or by jetting a combination of both.

  As shown in FIGS. 3 to 6, the inflator receiving member 64 is a metal plate fixed to the support portion 53a, receives the gas ejected from the inflator 63, and applies the propulsion reaction force to the movable member 61 side.

  Further, the movable member 61 is held on the support portion 53a with a predetermined clamping force by the simple holding means 7 including the clamping clip 71 and the bolt 72 shown in FIGS. That is, U-shaped cutouts 53f and 53f that open to the rear of the vehicle are formed at the vehicle rear side end portions of the upper plate 53c and the lower plate 53e of the support portion 53a, and the upper plate 61a and the upper plate 61a of the movable member 61 The lower plate 61c is also formed with a U-shaped cutout 61f similar to the cutout 53f. The notch portions 51f and 61f are sandwiched between the upper plate 61a and the upper plate 53c at positions where the clip clips 71 and 71 overlap the notch portions 51f and 61f, and the lower plate 61c and the lower plate 53e are sandwiched therebetween. It is fastened with a bolt 72 having a through hole. This fastening force is set to a fastening force that does not come off when a load is applied to the steering member 52 in a normal state, and that comes off when the driving force of the inflator 63 is applied to the movable member 61.

  Further, between the movable member 61 and the support portion 53a, a fixing means 100 for fixing the steering column 4 at a predetermined position when the steering column moves rearward of the vehicle, and forward of the vehicle acting on the movable member 61. The load absorbing means 200 for absorbing the load is provided.

  The fixing means 100 and the load absorbing means 200 are provided between the upper plate 53c of the support portion 53a and the upper plate 61a of the movable member 61. The fixing means 100 includes an engaging pin 102 and a lock hole 101 as engaging means. On the other hand, the load absorbing means 200 includes an absorption long hole 201 formed continuously with the lock hole 101.

  The lock hole 101 is a circular hole formed at a position adjacent to the notch 53f in the vehicle width direction on the upper plate 53c of the support 53a.

  The absorption long hole 201 extends from the lock hole 101 to the front of the vehicle and is formed in parallel with the slide guide hole 62a.

  The engagement pin 102 is formed on a holding clip 271 that holds the upper plate 61a of the movable member 61 and the upper plate 53c of the support portion 53a. As shown in FIGS. 8 to 10, the holding clip 271 has an approximately U-shaped cross-section, and extends to the front of the vehicle along the lower side of the absorbing long hole 201 of the upper plate 53 c. 271a. A part of the tip of the extension arm 271a is bent upward in the vehicle to form an engagement pin 102 that is a plate-like pin. Further, the dimension of the engagement pin 102 in the vehicle width direction is smaller than the diameter of the lock hole 101, but is larger than the width dimension of the absorption long hole 201.

  Further, the bolt 103 penetrating the sandwiching clip 271 in the vertical direction is inserted into the engagement hole 61g formed in the upper plate 61a of the movable member 61 so that the sandwiching clip 271 is integrated with the movable member 61 in the front-rear direction of the vehicle. To move in the direction.

  The drive of the inflator 63 is controlled by the drive control device 8. This drive control device 8 detects a frontal collision of a vehicle that requires occupant protection based on an input from an acceleration sensor that detects vehicle longitudinal acceleration or a sensor group 81 that includes a load sensor that detects a load input to the vehicle. This inflator 63 is driven immediately before or when a collision occurs, and at the same time, the inflators 12a and 13a of the driver airbag device 12 and the passenger airbag device 13 are driven.

  Next, the operation of the steering apparatus according to the first embodiment will be described.

  At the time of detecting a front collision of the vehicle, the drive control device 8 drives each inflator 12, 13, 63. Thus, the airbag is deployed in the driver airbag device 12 and the passenger airbag device 13.

  When the inflator 63 is driven, a driving force is applied to the movable member 61 in the rearward direction of the vehicle, the fastening by the simple holding means 7 is released, and the movable member 61 is moved to the slide guide means 62 by the slide guide hole 62a and the guide pin 62b. It is guided and moves to the vehicle rear (arrow RR direction) along the support part 53a. That is, in the movable member 61, the guide pin 62b slides as shown in FIGS. 4 and 6 from the position where the guide pin 62b is arranged at the vehicle front end portion of the slide guide hole 62a as shown in FIGS. The guide hole 62a moves to a position arranged at the vehicle rear end.

  As the movable member 61 moves toward the rear of the vehicle, the steering member 52 moves toward the rear of the vehicle. Further, the steering wheel 1, the knee protector bracket 9, and the instrument panel (not shown) supported by the movable member 61 also move toward the rear of the vehicle. Moving.

  FIG. 7 shows changes in the positions of the steering wheel 1, the steering member 52, and the knee protector bracket 9, (bf) is added before driving the rearward moving means 6, and (mb) is added. The position when the movable member 61 is moved to the position shown in FIGS. 4 and 6 by driving the rearward moving means 6 is indicated by (af). The position when re-moving is shown.

  As described above, the steering wheel 1, the knee protector bracket 9, and the instrument panel (not shown) move toward the rear of the vehicle, so that the airbags of the airbag devices 12 and 13 To absorb the load that the occupant moves to the front of the vehicle. Similarly, the knee protector bracket 9 also restrains the occupant in the retracted position and absorbs the load.

  Further, when the above-described backward movement means 6 is driven, the fixing means 100 performs the following operation.

  In a normal time before the rearward moving means 6 is driven, the engaging pin 102 is disposed below the absorption slot 201 as shown in FIG. At this time, since the engaging pin 102 has a larger dimension in the vehicle width direction than the absorption elongate hole 201, the engagement pin 102 is not inserted into the absorption elongate hole 201 and abuts against the lower surface of the upper plate 53c of the support portion 53a. ing.

  On the other hand, when the rearward moving means 6 is driven and the movable member 61 moves rearward with respect to the support portion 53a, the holding clip 271 moves to the rear of the vehicle integrally with the movable member 61. The provided engagement pin 102 moves along the lower surface of the upper plate 53c of the support portion 53a, reaches the lock hole 101, and is engaged by being engaged as shown in FIG. Due to the engagement between the engagement pin 102 and the lock hole 101, the movable member 61 is temporarily fixed to the support portion 53a. Accordingly, the steering column 4 is prevented from moving forward of the vehicle, and the reaction force when the driver seat airbag device 12 as the first absorbing means and the load absorbing portion 2c as the second absorbing means absorb the load. Secure.

  At this time, since the engaging pin 102 is wider than the absorption long hole 201, the engaging pin 102 is engaged with the lock hole 101. However, the load input from the occupant to the steering wheel 1 exceeds a predetermined value. Then, the engaging pin 102 on the movable member 61 side moves along the absorption hole 201 that continues to the front of the lock hole 101 with the deformation of both 102 and 201, and the steering member 52 moves forward of the vehicle. Moving. At this time, the load is absorbed by the deformation of the engaging pin 102 and the absorbing long hole 201 described above.

  The position at which the steering member 52, the steering wheel 1, and the knee protector bracket 9 are moved forward by the vehicle load input from the occupant is the position indicated by (af) in FIG. 7, and the load absorbing portion 2c. As shown in the figure, there may be a case where the vehicle moves forward from the position before driving the rearward moving means 6 as shown in the figure.

  As described above, in the steering apparatus according to the first embodiment, the steering member 52 is moved backward with respect to the vehicle body by the backward movement means 6 at the time of a vehicle front collision. The steering wheel 1, the knee protector bracket 9 and the instrument panel (not shown) once retracted. Therefore, the restraint position of the occupant by the driver seat airbag device 12, the passenger seat airbag device 13, and the knee protector bracket 9 is retracted more than before the rear moving means 6 is driven. In addition, when the steering member 52 is moved backward, it is temporarily fixed at that position by the fixing means 100. For this reason, the stroke amount which these 9, 12, 13 and the load absorption part 2c absorb a load expands, and load absorption performance improves.

  Therefore, during the normal time before driving the rearward movement means 6, the steering wheel 1, the instrument panel (not shown), and the knee protector bracket 9 are arranged in front of the vehicle to secure the passenger space and to move backward than when the load is input. When the means 6 is driven, it is possible to improve the load absorption performance by disposing these at the rear of the vehicle as compared with the normal time. Therefore, it is possible to achieve both the securing of the passenger space and the improvement of the load absorption performance in a limited space.

  Furthermore, in the fixing means 100, since the load input from the steering wheel 1 etc. is absorbed by the load absorbing means 200, the load absorbing performance is further improved.

  In addition, since the airbag device 12 for the driver's seat and the airbag device 13 for the passenger's seat are close to the occupant when the airbag is deployed, the restraining performance of the occupant is enhanced and the airbag can be downsized. It becomes.

  In addition, the steering member 52 is moved to the rear of the vehicle by the rear moving means 6. The steering member 52 supports an instrument panel, an air conditioner, etc. (not shown) and has a large mass. For this reason, when a secondary load to the front of the vehicle is input via the steering wheel 1 or the knee protector bracket 9, the steering member 52 having a large mass is moved to the front of the vehicle. Only the load absorption performance is increased.

  Further, since the inflator 63 that ejects gas is used as the driving means for the backward movement means 6, the operation responsiveness is higher than that of using a mechanical driving means such as a spring, and the above load absorption performance is improved. You can definitely get it.

  Moreover, since the movable member 61 is held on the support portion 53a as the fixed member by the simple holding means 7, the movable member 61 is moved when the rearward moving means 6 is operated while ensuring the support rigidity of the steering wheel 1 in a normal state. Thus, the quality of the steering device can be improved.

  In addition, since the slide guide means 62 is provided between the movable member 61 and the support portion 53a, the movable member 61 can be reliably moved when the movable member 61 moves to the rear of the vehicle and thereafter returns to the front of the vehicle. A guide in the moving direction can be provided so that the locking hole 101 and the engaging pin 102 in the fixing means 100 can be engaged with each other reliably.

  In addition, when the fixing means 100 and the load absorbing means 200 are provided, the absorbing long hole 201 and the lock hole 101 constituting them are formed in the support portion 53a as a fixing member, and the engaging pin 102 is the holding clip 71. Therefore, in providing the fixing means 100 and the load absorbing means 200, the number of parts does not increase, and the cost can be reduced and the space efficiency can be improved.

  11 and 12 illustrate a steering apparatus according to Embodiment 2 of the embodiment of the present invention.

  Parts that are the same as or equivalent to those of the first embodiment are given the same reference numerals, and different parts will be mainly described.

  In the steering apparatus according to the second embodiment, the backward movement means 301 is provided between the steering member 302 and the steering column 4 so that the backward movement means 301 moves the steering column 4 to the rear of the vehicle with respect to the steering member 302. I have to.

  As shown in FIG. 11, the steering member 302 is formed in a cylindrical shape as in the first embodiment. In addition, although not shown, both ends of the steering member 302 in the vehicle width direction are fixed to the dash panel 3 or a front pillar outside the figure.

  The backward moving means 301 includes a fixed bracket 303 as a fixed member, a movable panel 304 as a movable member, and an inflator 305 (see FIG. 12) as a drive means.

  The fixed bracket 303 is fixed to the steering member 302 to support the steering column 4 similarly to the support bracket 51 shown in the first embodiment, and has a substantially rectangular fixed panel 303a. A stud bolt 303b is protruded downward and fixed at a place.

  The movable panel 304 is fixed to the steering column 4 by welding or the like, and is disposed in contact with the lower surface of the fixed panel 303a. Further, the movable panel 304 is formed with a holding hole 304a into which a stud bolt 303b is inserted and a slide guide hole 304b, which are cut out in a substantially U shape from an end portion in the vehicle longitudinal direction.

  The stud bolts 303b, the holding holes 304a, and the slide guide holes 304b constitute a slide guide means 362 that maintains the movable panel 304 held by the fixed panel 303a and guides the relative slide between them. Although not shown in the drawings, the stud bolt 303b and the holding hole 304a provided at the vehicle front side end portions of the fixed panel 303a and the movable panel 304 are simply held as in the first embodiment. Means shall be provided.

  The inflators 305 and 305 are provided at both ends of the movable panel 304 in the vehicle width direction, and eject gas as with the inflator 63 of the first embodiment. Although not shown, the fixed bracket 303 is provided with a receiving surface for receiving the gas ejection of the inflator 305. The receiving surface can be formed of a metal plate similar to that of the first embodiment, and can be a piston. It is also possible to adopt a structure for receiving a flow pressure resistance such as a cylinder.

  Further, a fixing means 310 and a load absorbing means 320 are provided between the fixed panel 303a and the movable panel 304. As in the first embodiment, the fixing means 310 includes an engaging pin 312 and a lock hole 313, and the load absorbing means 320 includes an engaging pin 312 and an absorbing long hole 314.

  That is, an arm member 311 similar to the extension arm 271a shown in the first embodiment extends in the vehicle front-rear direction on the vehicle upper side of the movable panel 304, and the vehicle rear side end portion of the arm member 311 is connected to the movable panel 304. It is fixed to the vehicle rear side end face by bolting or welding. An engagement pin 312 that protrudes downward from the vehicle is formed at the end of the arm member 311 on the vehicle front side.

  On the other hand, the fixing panel 303a is formed with a lock hole 313 and an elongated oblong hole 314 extending continuously forward of the vehicle.

  Next, the operation of the steering device according to the second embodiment will be described.

  In the event of a frontal collision of the vehicle, both inflators 305 and 305 are driven, and the movable panel 304 is guided by the slide guide means 362 with respect to the fixed panel 303a fixed to the vehicle body via the steering member 302. As shown, the vehicle moves rearward and obliquely upward. As a result, the steering column 4 to which the movable panel 304 is coupled and the steering wheel 1 supported by the movable column 304 move rearward of the vehicle.

  Then, the engaging pin 312 as the fixing means 310 and the lock hole 313 engage with each other, and the movable panel 304 is fixed at the position moved rearward.

  Therefore, the driver's seat airbag device 12 provided on the steering wheel 1 that is deployed simultaneously with the driving of the inflator 305 restrains the occupant and absorbs the load that moves the occupant forward of the vehicle in this retracted position.

  Further, when the load input to the steering wheel 1 exceeds a predetermined value, the engagement pin 312 moves through the absorption long hole 314 with deformation of both to absorb the load. Therefore, in the steering device of the second embodiment, the stroke amount for absorbing the load is increased and the load absorbing performance is improved.

  Therefore, during normal times before driving the inflator 305, the steering wheel 1 is arranged in front of the vehicle to secure passenger space, and when driving the inflator 305, these are arranged at the rear of the vehicle as compared with normal time to load absorbing performance. Thus, it is possible to achieve both the securing of passenger space and the improvement of load absorption performance in a limited space.

  In addition, since the airbag device 12 for the driver's seat approaches the occupant when the airbag is deployed, the occupant's restraining performance is enhanced, and the airbag can be downsized.

  The embodiment of the present invention and Example 1 and Example 2 have been described in detail above with reference to the drawings, but the specific configuration is limited to this embodiment and each Example 1 and Example 2. First, design changes that do not depart from the gist of the present invention are included in the present invention.

  That is, in the steering device of the first embodiment, the slide guide means 62 is provided with the slide guide hole 62a in the support portion 53a of the mount member 53 on the vehicle body side and the guide pin 62b on the movable member 61 on the steering member 52 side. On the contrary, the guide pin 62b may be provided in the support portion 53a, and the slide guide hole 62a may be provided in the movable member 61.

  The position where the rear moving means is provided is not limited to the position shown in the first and second embodiments as long as the steering column 4 can be moved rearward with respect to the vehicle body. For example, the mount member 53 may be provided to move backward with respect to the vehicle body. Alternatively, the steering member 52 is divided into a fixed member that is fixed to the vehicle body side, and a movable member that can move to the rear of the vehicle with respect to the fixed member and supports the steering column 4, and the rearward moving means is movable. The member may be moved rearward of the vehicle.

  Further, in the first and second embodiments, the inflators 63 and 305 for ejecting gas are shown as driving means for the backward movement means. However, the inflators 63 and 305 are not limited to this, and are driven by a mechanical spring or the like. A thing may be used.

  In the first embodiment, the knee protector bracket 9 is shown as the knee protector supported by the steering member 52. However, the shape, number, and installation position of the knee protector are not limited to those illustrated.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a steering apparatus according to a first embodiment of the best mode for carrying out the invention. It is a side view which shows the steering column 4 of the steering apparatus of Example 1 of embodiment of this invention. It is explanatory drawing containing the cross-sectional view which shows the time of the non-drive of the back movement means 6 of the steering apparatus of Example 1 of embodiment of this invention. It is a cross-sectional view which shows at the time of the drive of the back movement means 6 of the steering apparatus of Example 1 of embodiment of this invention. It is a longitudinal cross-sectional view which shows the time of the non-drive of the back movement means 6 of the steering apparatus of Example 1 of embodiment of this invention. It is a longitudinal cross-sectional view which shows at the time of the drive of the back movement means 6 of the steering apparatus of Example 1 of embodiment of this invention. It is operation | movement explanatory drawing of the steering apparatus of Example 1 of embodiment of this invention. The main part at the time of the non-drive of the back movement means 6 is shown in the steering apparatus of Example 1 of embodiment of this invention, (a) is sectional drawing seen from the side, (b) was seen from the downward direction It is a bottom view. The main part at the time of the drive of the back movement means 6 is shown in the steering apparatus of Example 1 of embodiment of this invention, (a) is sectional drawing seen from the side, (b) is the bottom face seen from the bottom FIG. The main part at the time of load input is shown in the steering apparatus of Example 1 of an embodiment of the invention, (a) is a sectional view seen from the side, and (b) is a bottom view seen from the lower part. It is a longitudinal cross-sectional view which shows the principal part of the steering apparatus of Example 2 of embodiment of this invention, (a) shows before the inflator 305 drives, (b) shows after the drive of the inflator 305. . It is the bottom view seen from the vehicle lower part which shows the principal part of the steering device of Example 2 of an embodiment of the invention, (a) shows before the inflator 305 drives, (b) after the drive of inflator 305 Is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Steering wheel 2 Steering shaft 2c Load absorption part (2nd absorption means)
3 Dash panel (vehicle body)
4 Steering column 5 Support means 6 Backward movement means 7 Simple holding means 12 Driver's seat airbag device (first absorption means)
52 Steering member 53 Mount member (vehicle body)
53a Supporting part (fixing member)
61 Movable member 62 Slide guide means 62a Slide guide hole 62b Guide pin 63 Inflator (drive means)
DESCRIPTION OF SYMBOLS 100 Fixing means 101 Lock hole 102 Engagement pin 200 Load absorption means 201 Absorption long hole 271 Holding clip 271a Extension arm 301 Backward movement means 302 Steering member 303 Fixing bracket 303a Fixing panel (fixing member)
304 Movable panel (movable member)
304b slide guide hole 305 inflator (drive means)
310 Fixing means 312 Engaging pin 313 Lock hole 314 Absorption slot 320 Load absorbing means 362 Slide guide means

Claims (11)

A steering shaft having a steering wheel at the tip on the vehicle rear side;
A steering column that rotatably supports the steering shaft;
Support means for supporting the steering column on the vehicle body;
A first absorbing means provided on the steering wheel for absorbing a vehicle front moving load at the time of a frontal collision of the vehicle;
Second absorbing means provided in front of the vehicle from the steering wheel and absorbing the vehicle forward moving load;
A steering device comprising:
The second absorption means includes a rearward movement means for moving the steering column to the rear of the vehicle with respect to the vehicle body from a position where the support means normally supports;
Fixing means for fixing the steering column at a predetermined position where the steering column has moved rearward of the vehicle,
When determining a vehicle collision, at least the steering shaft is moved rearward of the vehicle to increase the load absorption stroke amount of the steering wheel accompanying the load absorption by the first absorption means and the second absorption means. Steering device characterized. The support means includes a steering member for supporting the steering column;
The steering apparatus according to claim 1, wherein the rearward movement means is means for moving the steering column rearward of the vehicle relative to the steering member. The support means includes a steering member for supporting the steering column;
The steering apparatus according to claim 1, wherein the rearward movement means moves the steering column together with the steering member to the rear of the vehicle with respect to the vehicle body.   The steering apparatus according to claim 3, wherein the steering member supports a knee protector.   The rearward movement means is a fixed member fixed to the vehicle body side, a movable member fixed to the steering column side and supported by the fixed member so as to be movable rearward of the vehicle, and directed toward the rear of the vehicle with respect to the movable member The steering device according to any one of claims 1 to 4, further comprising: a driving unit that provides a driving force of   The steering apparatus according to claim 5, wherein the driving unit includes an inflator that ejects gas and applies a driving force to the movable member.   The fixing means is an engaging means that engages when the movable member performs the backward movement with respect to the fixed member and restricts the movable member from moving forward relative to the fixed member. The steering apparatus according to claim 5, wherein the steering apparatus is provided. The rear moving means, holds the movable member to the stationary member, and a steering according to claim 7 you characterized by comprising a simple retaining means for releasing the holding by the driving force of said driving means apparatus. The simple holding means includes a holding clip that holds the movable member and the fixed member with a predetermined holding force and is engaged with the movable member so as to move backward together with the movable member;
9. The steering apparatus according to claim 8, wherein the engaging member on the movable member side is formed integrally with the holding clip.   The steering according to any one of claims 7 to 9, wherein the engaging means is provided with a load absorbing means for absorbing a forward load acting on the movable member in the engaged state. apparatus.   A slide guide hole having a long hole shape provided in one of the movable member and the fixed member and extending in the vehicle front-rear direction, and provided in one of the movable member and the fixed member, and the slide guide The steering device according to any one of claims 5 to 10, further comprising: a guide pin that has a guide pin inserted into the hole and that guides relative sliding of both.