JP2008279974A - Collision energy absorber of vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a collision energy absorber of a vehicle capable of surely transmitting a collision load from a pillar to a seat without sacrificing a living space in a cabin and the easiness of getting-on/off. <P>SOLUTION: The side collision load inputted from the side of a vehicle body to the center pillar 2 is supported by the seat 3. The seat 3 has a hinge shaft 8 extending in the lateral direction of the vehicle and functioning as a strengthening member. A load transmission arm 10 is rotatably connected to the hinge shaft 8. A cam member 12 tilted forward downward is secured to the center pillar 2. The load transmission arm 10 is biased in the direction of being brought into contact with the cam member 12 by a coiled spring 11. When the seat 3 is longitudinally slid and displaced, an angle of the load transmission arm 10 is changed according to the displacement, and the input load from the center pillar 2 is transmitted to the seat 3. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a collision energy absorbing device for a vehicle that absorbs collision energy input to a side surface of the vehicle.

  A collision energy absorbing device has been developed in which a load input to a pillar on the side of a vehicle body is received by a seat on which an occupant is seated in a side collision of a vehicle (see, for example, Patent Document 1).

In this collision energy absorbing device, a load transmission member facing the side surface of the seat back frame is fixed to the side surface of the pillar or door in the vehicle interior, and the load input to the pillar or door is applied to the load transmission member at the side collision of the vehicle. To the seat back frame. Further, the seat back frame of this apparatus is provided with a reinforcing member extending in the vehicle width direction, and a collision load input through the load transmitting member is received by the reinforcing member.
JP-A-9-188215

  However, in this conventional collision energy absorbing device, the load transmission member has a structure that is fixed at a fixed position on the side of the vehicle interior of the pillar or door, so regardless of the front / rear position adjustment or the inclination adjustment of the seat, etc. In order to always allow a collision load to be transmitted from the pillar or door to the seat back through the load transmission member, the load transmission member fixed to the pillar or door must be enlarged. And if the load transmission member fixed to a pillar or a door enlarges, while the living space in a vehicle interior is compressed, it will cause troubles, such as a passenger | crew's getting on / off property falling.

  SUMMARY OF THE INVENTION Accordingly, the present invention is intended to provide a vehicle collision energy absorbing device capable of reliably transmitting a collision load from a pillar to a seat without sacrificing a living space in the passenger compartment or getting on and off.

The invention according to claim 1, which solves the above-described problem, is a pillar (for example, a strength member of a vehicle body side) on the side of the rear side of a seat (for example, a seat 3 in an embodiment described later) on which a passenger sits. In a collision energy absorbing device for a vehicle provided with a center pillar 2) in an embodiment described later and absorbing a collision load input to the pillar from the side of the vehicle body by the seat, the seat extends in the vehicle width direction. A cross member (for example, a hinge shaft 8 in an embodiment described later), and a load transmission mechanism (for example, a load transmission mechanism 13 in an embodiment described later) for transmitting a collision load from the pillar to the cross member, The cross member and the pin are displaced so that the load transmitting portion (for example, a side surface of the load transmitting arm 10 in an embodiment described later) is displaced according to the displacement of the seat. Characterized in that provided between the over.
Thereby, when the side collision load input to the pillar is transmitted to the load transmission mechanism, the load is transmitted to the cross member of the seat through the load transmission portion of the mechanism. In addition, when the front / rear position of the seat is adjusted, the load transmission portion of the load transmission mechanism is displaced according to the displacement of the seat, and the side collision load input to the pillar is surely applied to the cross member of the seat through the load transmission portion. Will be transmitted to.

According to a second aspect of the present invention, in the vehicle collision energy absorbing device according to the first aspect, the seat is provided so as to be slidable in the vehicle front-rear direction, and the load transmission mechanism is rotated by the cross member. A load transmission member (for example, a load transmission arm 10 in an embodiment to be described later) connected to the pillar, and fixed to the pillar, abuts on the load transmission member, and the load transmission member according to the slide position of the seat A cam member (for example, a cam member 12 in an embodiment described later) and a biasing member (for example, a torsion spring 11 in an embodiment described later) for constantly urging the load transmitting member in the cam member direction. And.
Thus, when the seat is slid and adjusted in the vehicle front-rear direction, the load transmitting member is urged by the urging member and rotates with respect to the cross member of the seat while maintaining a contact state with the cam member. The movement locus of the load transmitting member at this time is determined by the shape of the contact surface of the cam member, the movement position of the seat, and the like. Therefore, when the side collision load is input to the pillar, the pillar abuts on the load transmission member that is rotated and adjusted by the cam member as described above, and the collision load is transmitted from the load transmission member to the cross member of the seat. become.

According to a third aspect of the present invention, in the vehicle collision energy absorbing device according to the first aspect, the seat is provided so as to be slidable in the vehicle front-rear direction, and the load transmission mechanism is rotated by the cross member. A load transmission member (for example, a load transmission arm 10 in an embodiment described later) connected to the pillar, a guide groove (for example, a guide groove 41 in an embodiment described later) provided in the pillar, and the load transmission member A fitting portion (for example, a fitting portion 40 in an embodiment described later) that is provided and fitted in the guide groove to rotate and displace the load transmission member according to the slide position of the seat. It is characterized by being.
Thereby, when the seat is slid and adjusted in the vehicle front-rear direction, the load transmission member rotates with respect to the cross member of the seat while the fitting portion is guided by the guide groove on the pillar side. The movement trajectory of the load transmitting member at this time is determined by the shape of the guide groove and the movement position of the sheet. Therefore, when the side collision load is input to the pillar, the pillar abuts on the load transmission member that is rotated and adjusted by the guide groove as described above, and the collision load is transmitted from the load transmission member to the cross member of the seat. become.

According to a fourth aspect of the present invention, in the vehicle collision energy absorbing device according to the first aspect, the seat is provided so as to be slidable in the longitudinal direction of the vehicle, and the load transmission mechanism is fixed to the pillar. A load transmission member (for example, a load transmission arm 51 in an embodiment described later), a guide groove (for example, a guide groove 52 in an embodiment described later) provided in the load transmission member, and the cross member are provided integrally. A load receiving projection that is fitted in the guide groove and displaces in the guide groove according to the slide position of the sheet and receives a load through the bottom of the guide groove (for example, the bottom 52a in the embodiment described later). (For example, a load receiving projection 50 in an embodiment described later).
As a result, when the seat is slide-adjusted in the vehicle front-rear direction, the load protrusion integrated with the cross member of the seat displaces in the guide groove of the load transmitting member. Therefore, when the side collision load is input to the pillar, the collision load is transmitted from the load transmission member integrated with the pillar to the seat cross member through the bottom of the guide groove and the contact portion of the load receiving projection.

  According to the first aspect of the present invention, since the load transmission mechanism is provided between the cross member and the pillar of the seat so that the load transmission portion is displaced according to the displacement of the seat, the displacement of the seat is reduced. Regardless of this, the side collision load can always be reliably transmitted from the pillar to the seat cross member, and the load transmitting portion is displaced according to the displacement of the seat, thereby sacrificing the living space in the vehicle cabin and the ease of getting on and off. There is no need to make it.

  According to the second aspect of the present invention, the load transmitting member connected to the cross member so as to be rotatable is brought into contact with the cam member on the pillar side, whereby the load transmitting member is changed to the pillar when the seat slide position is changed. Therefore, the side collision load can always be reliably transmitted from the pillar to the cross member of the seat with a simple structure.

  According to the third aspect of the present invention, the load transmission member rotatably connected to the cross member is provided with a fitting portion, and the fitting portion is fitted into the guide groove on the pillar side, thereby When the slide position is changed, the load transmitting member can be changed to an appropriate position that can contact the pillar, so that the side collision load is always transmitted from the pillar to the seat cross member with a simple structure. be able to.

  According to the fourth aspect of the present invention, the guide groove is provided in the load transmission member fixed to the pillar, and the load receiving projection provided integrally with the cross member of the seat is fitted into the guide groove, thereby Since the load receiving projection can be displaced in the guide groove when the slide position is changed, the side collision load can always be reliably transmitted from the pillar to the cross member of the seat with a simple structure.

Next, embodiments of the present invention will be described with reference to the drawings. In each embodiment described below, the same portions are denoted by the same reference numerals, and the description of the overlapping portions is omitted. Further, in the following description, “upper”, “lower”, “front”, and “rear” refer to the upper and lower sides and the front and rear of the vehicle body unless otherwise specified.
First, a first embodiment of the present invention shown in FIGS. 1 to 4 will be described.
FIG. 1 is a diagram schematically showing a vehicle C that employs the collision energy absorbing device 1 according to the present invention and another vehicle C ′ that collides with the side surface of the vehicle C. In FIG. Center pillars (pillars) 3 disposed between front and rear side doors (not shown) in the vehicle body side portion are front seats on which the occupant m is seated. The collision energy absorbing device 1 according to the present invention is provided between each seat 3 on the front seat side and the center pillar 2 adjacent thereto.

  2 and 4 are side views corresponding to the arrow A in FIG. 1, and FIG. 3 is a partial sectional front view corresponding to the arrow B in FIG. As shown in these drawings, the seat 3 includes a seat cushion 4 that supports the occupant's buttocks, and a seat back 5 that supports the waist and back of the occupant, and the seat back 5 is provided at the rear end of the seat cushion 4. The seat cushion 4 is attached to the vehicle body floor 7 via the seat rail 6 so as to be slidable in the front-rear direction.

  A hinge shaft 8 also serving as a cross member extending in the vehicle width direction is provided at the rear end portion of the seat cushion 4, and the lower end of the seat back 4 is rotatably supported by the hinge shaft 8. An end portion of the hinge shaft 8 on the outer side in the vehicle width direction is an extension portion 9 protruding from the side portion of the seat 3, and the extension portion 9 has a substantially L-shaped block having a bent wall 10a at the tip portion. The load transmission arm 10 (load transmission member) which consists of is attached so that rotation is possible. The load transmission arm 10 is rotatably supported at its base portion by the extension 9 of the hinge shaft 8. The load transmission arm 10 is urged to rotate in one direction between the load transmission arm 10 and the seat 3. A torsion spring 11 (biasing member) is provided. Specifically, the load transmission arm 10 is basically assembled to the hinge shaft 8 so that the tip end side thereof is inclined downward from the upper side of the vehicle body, and is urged downward by the torsion spring 11 toward the lower side of the vehicle body. Has been.

On the other hand, a plate-like cam member 12 that is inclined obliquely downward toward the vehicle body front side is attached to the side surface of the center pillar 2 in the vehicle interior. A load transmitting arm 10 biased by the torsion spring 11 is always in contact with the upper surface side of the cam member 12. The shape, size, inclination angle, and the like of the load transmission arm 10 and the cam member 12 are set so that the load transmission arm 10 is rotationally displaced along a predetermined locus in accordance with the front and rear sliding positions of the seat 3. Specifically, when the seat 3 is in the sliding position on the rear end side, as shown in FIG. 2, the load transmission arm 10 abuts the cam member 12 on the lower surface near the root portion, thereby When the seat 3 rises so as to be substantially within the width in the longitudinal direction of the vehicle body and, conversely, when the seat 3 is in the sliding position on the front end side, the load transmission arm 10 is placed on the lower surface of the bending wall 10a on the front end side as shown in FIG. By abutting on the cam member 12, it is inclined so as to be directed substantially horizontally toward the rear side of the vehicle body, and at least the bent wall 10 a is positioned within the width of the center pillar 2 in the longitudinal direction of the vehicle body.
As will be described later, the center pillar 2 comes into contact with the side surface of the load transmission arm 10 at the time of a side collision of the vehicle. Therefore, in this embodiment, the side surface of the load transmission arm 10 constitutes a load transmission portion, and the load transmission arm 10, the torsion spring 11, the cam member 12 and the like constitute the load transmission mechanism 13 of the collision energy absorbing device 1. It has become.

  In the above configuration, when the seat 3 is displaced to the slide position on the rear end side as shown in FIG. 2, the load transmitting arm 10 is displaced in the rising direction by being guided by the cam member 12, and the outer side surface thereof is centered. The pillar 2 faces the inner surface in the vehicle width direction. In this state, the load transmission arm 10 does not substantially protrude from the width of the center pillar 2 in the longitudinal direction of the vehicle body, so the load transmission arm 10 compresses the living space on the rear seat side or the passenger gets on and off the rear seat. There is no hindrance.

  In this way, when the seat 3 is slid to the end position and the side collision load is input, the center pillar 2 is displaced inward in the vehicle width direction and comes into contact with the side surface of the load transmission arm 10 to transmit the load. The collision load is transmitted to the hinge shaft 8 of the seat 3 at the base portion of the arm 10. Thereby, the fall of the center pillar 2 comes to be supported by the seat 3 through the load transmission arm 10, and the collision energy is sufficiently absorbed during this time.

  On the other hand, when the seat 3 is displaced to the sliding position on the front end side as shown in FIG. 4, the load transmitting arm 10 is guided by the cam member 12 and is directed substantially horizontally toward the rear side of the vehicle body. The side faces the inner side in the vehicle width direction of the center pillar 2. Also in this case, since the load transmission arm 10 does not protrude rearward from the center pillar 2, the living space on the rear seat side is not compressed, and no obstacles to getting on and off are caused.

  In this way, when the seat is slid to the front end position and the side collision load is input, the center pillar 2 is displaced inward in the vehicle width direction and comes into contact with the side surface on the front end side of the load transmission arm 10. The collision load is transmitted to the hinge shaft 8 of the seat 3 at the base portion of the load transmission arm 10. Accordingly, also in this case, the center pillar 2 is reliably supported by the seat 3.

  In the above description, the case where the seat 3 is adjusted to the rear end position and the front end position has been described. However, the load transmission can be performed even when the seat 3 is adjusted to an arbitrary position between the rear end position and the front end position. The arm 10 does not protrude to the rear side of the center pillar 2, and at least a part of the side surface faces the inner side surface of the center pillar 2 in the vehicle width direction. For this reason, even if the seat 3 is adjusted to any position in the front and rear, the center pillar 2 is allowed to fall over the load transmission arm 10 without sacrificing the living space on the rear seat side and the ease of getting on and off. It can be supported by.

  In this embodiment, the hinge shaft 8 of the seat 3 is used as a cross member. However, a cross member is provided on the seat 3 separately from the hinge shaft 8, and the load transmission arm 10 can be rotated on the cross member. You may make it connect. However, when the hinge shaft 8 is used as a cross member as in this embodiment, there is an advantage that the number of parts can be reduced and the load transmission arm 10 is not affected by the tilting operation of the seat back 5.

  Further, in the first embodiment, the load transmission arm 10 is configured by a thick block. However, as in the second embodiment shown in FIGS. 5 and 6, the load transmission arm 110 is arranged in the vehicle width direction. It is good also as a corrugated board shape in which the bead 20 along several was formed. In this case, since the load transmission arm 110 is provided with a plurality of beads 20 along the vehicle width direction, when a side collision load is input from the center pillar 2 to the load transmission arm 110, the adjacent beads 20, 20 are provided. It is possible to effectively prevent the load transmitting arm 110 from being crushed by the shear stress acting in between. Therefore, in this embodiment, the side collision load can be reliably transmitted to the seat 3 without causing an increase in the thickness of the load transmission arm 110.

  However, when the load transmitting arm 110 is formed in a corrugated plate shape in this way, the occupied width in the vehicle width direction of the load transmitting arm 110 is increased and the living space of the rear seat is reduced. If the vehicle width direction inner side region facing the rear seat side of the load transmission arm 210 is formed in a substantially right triangle shape that is substantially arc-like, as in the third embodiment shown in FIG. be able to. In FIG. 7, n represents an image of the occupant's knees seated in the rear seat.

  Further, the load transmission arm is formed in a box-shaped closed cross-sectional shape as in the fourth embodiment shown in FIG. 8 (in FIG. 8, the load transmission arm is indicated by reference numeral 310), or as shown in FIG. A plurality of ribs 30 along the vehicle width direction may be provided as in the fifth embodiment (the load transmission arm is denoted by reference numeral 410 in the figure).

Next, the sixth embodiment shown in FIGS. 10 and 11 will be described.
As in the first embodiment, the collision energy absorbing device 501 of this embodiment is provided with a hinge shaft 8 at the rear end of the seat cushion 4 that is slidably mounted on the vehicle body floor 7, and the hinge shaft 8 ( A load transmission arm 10 is rotatably attached to an extension portion 9 of the cross member), and a roller-shaped fitting portion 40 protrudes from a side surface of the center pillar 2 of the load transmission arm 10 facing the vehicle interior side surface. A long-hole-shaped guide groove 41 is formed on the side surface of the center pillar 2 where the fitting portion 40 is slidably or slidably fitted. This guide groove 41 has a function corresponding to the cam member 12 and the torsion spring 11 in the first embodiment, and adjusts the posture of the load transmission arm 10 to a predetermined value according to the slide position of the seat 3, specifically, Adjustment is made so that the tip end side of the load transmission arm 10 is always within the width of the center pillar 2 in the longitudinal direction of the vehicle body.
In this embodiment, the bottom 41a of the guide groove 41 on the center pillar 2 side and the fitting portion 40 on the load transmission arm 10 constitute a load transmission portion, and the load transmission arm 10, the fitting portion 40, and the guide groove are formed. 41 and the like constitute a load transmission mechanism 513 of the collision energy absorbing device 501.

  Also in the case of the collision energy absorbing device 501, when the front / rear position of the seat 3 is slid and adjusted, the fitting portion 40 is guided in the guide groove 41 and the front end portion side of the load transmission arm 10 is the width in the longitudinal direction of the center pillar 2 in the vehicle body. Since the posture is adjusted so as to be almost within the seat, even if the side collision load is input when the seat 3 is in any position, the side collision load is input from the center pillar 2 through the load transmission arm 10 to the seat 3. Can be reliably transmitted to the hinge shaft 8. Therefore, when the side collision load is input, the center pillar 2 can be reliably tilted by the seat 3 and the collision energy can be efficiently absorbed by the vehicle body.

Finally, a seventh embodiment shown in FIGS. 12 and 13 will be described.
In the collision energy absorbing device 601 of this embodiment, a hinge shaft 8 that also serves as a cross member is provided at the rear end of a seat cushion 4 that is slidably mounted on the vehicle body floor 7, and the end of the hinge shaft 8 is the vehicle width. A load transmission arm 51 is fixed to an inner side surface of the center pillar 2 in the vehicle width direction and protrudes to the front side of the vehicle body. A guide groove 52 is formed on the side of the vehicle interior of the load transmission arm 51 along the longitudinal direction of the vehicle body. A load receiving projection 50 on the seat 3 side is slidably fitted in the guide groove 52. The load receiving projection 50 is displaced in the guide groove 52 in accordance with the longitudinal displacement of the seat 3 and comes into contact with the bottom 52 a of the guide groove 52 so that a side collision load is transmitted from the load transmission arm 51. ing.
In this embodiment, the bottom 52a of the guide groove 52 of the load transmission arm 51 and the load receiving projection 50 constitute a load transmitting portion, and the load transmitting arm 51, the guide groove 52, the load receiving projection 50, etc. absorb the collision energy. The load transmission mechanism 613 of the device 601 is configured.

  When the seat 3 is displaced to an arbitrary slide position, the load receiving projection 50 on the rear end side of the seat 3 moves in the guide groove 52 of the load transmitting arm 51 to a position corresponding to the displacement, and at that position. The end face of the load receiving projection 50 faces the bottom 52a of the guide groove 52. Therefore, when the seat 3 is in any sliding position, the end face of the load receiving projection 50 always faces the bottom 52a of the guide groove 52 of the load transmitting arm 51, and a side collision load is input to the center pillar 2. The bottom 52a of the guide groove 52 of the load transmission arm 51 abuts against the load receiving projection 50, and the load is reliably supported by the hinge shaft 8 of the seat 3. As a result, the fall of the center pillar 2 is regulated by the seat 3, and the collision energy is efficiently absorbed by the entire vehicle body.

  In the case of the collision energy absorbing device 601, when the front and rear slide positions of the seat 3 are adjusted, the relative positions of the load receiving projection 50 and the guide groove 52 change, but the load transmission arm in which the guide groove 52 is formed. Since 51 is fixed to the center pillar 2 in a state of extending to the front side of the vehicle body, there is no sacrifice in the comfortability of the rear seat and the ease of getting on and off.

  In addition, this invention is not limited to said embodiment, A various design change is possible in the range which does not deviate from the summary.

The schematic diagram which shows the 1st Embodiment of this invention and shows a mode when the vehicle to which the collision energy absorption apparatus concerning this invention is applied collides with the side surface of another vehicle. The side view corresponding to A arrow of FIG. 1 which shows the same embodiment. The fragmentary sectional front view corresponding to B arrow of FIG. 2 which shows the same embodiment. The side view corresponding to A arrow of FIG. 1 which shows the same embodiment. The perspective view which shows 2nd Embodiment of this invention. The perspective view which shows the same embodiment. The top view which shows the 3rd Embodiment of this invention. The perspective view which shows 4th Embodiment of this invention. The perspective view which shows 5th Embodiment of this invention. The 6th Embodiment of this invention is shown, The side view corresponding to A arrow of FIG. The fragmentary sectional front view corresponding to C arrow of FIG. 10 which shows the same embodiment. The 7th Embodiment of this invention is shown, The side view corresponding to A arrow of FIG. The fragmentary sectional front view corresponding to D arrow of Drawing 12 showing the embodiment.

Explanation of symbols

1,501 ... Collision energy absorber 2 ... Center pillar (pillar)
3 ... Seat 8 ... Hinge shaft (cross member)
10, 110, 210, 310, 410 ... load transmission arm (load transmission member)
11 ... Torsion spring (biasing member)
DESCRIPTION OF SYMBOLS 12 ... Cam member 13,513 ... Load transmission mechanism 40 ... Fitting part 41 ... Guide groove 50 ... Load receiving protrusion 51 ... Load transmission arm (load transmission member)
52 ... Guide groove 52a ... Bottom

Claims (4)

A collision energy absorbing device for a vehicle, in which a pillar, which is a strength member of a vehicle body side portion, is provided on a side of a rear portion of a seat on which a passenger is seated, and a collision load input to the pillar from the side of the vehicle body is absorbed by the seat. In
A cross member extending in the vehicle width direction is provided on the seat,
A vehicle is characterized in that a load transmission mechanism for transmitting a collision load from the pillar to the cross member is provided between the cross member and the pillar so that the load transmission portion is displaced according to the displacement of the seat. Impact energy absorber. The seat is provided to be slidable in the vehicle longitudinal direction,
The load transmission mechanism is
A load transmitting member rotatably connected to the cross member;
A cam member fixed to the pillar, abutting on the load transmission member, and rotating the load transmission member according to a slide position of the seat;
A biasing member that constantly biases the load transmitting member toward the cam member;
The vehicle collision energy absorbing device according to claim 1, further comprising: The seat is provided to be slidable in the vehicle longitudinal direction,
The load transmission mechanism is
A load transmitting member rotatably connected to the cross member;
A guide groove provided in the pillar;
A fitting portion provided on the load transmission member, fitted in the guide groove, and configured to rotate and displace the load transmission member according to a slide position of the seat;
The vehicle collision energy absorbing device according to claim 1, further comprising: The seat is provided to be slidable in the vehicle longitudinal direction,
The load transmission mechanism is
A load transmitting member fixed to the pillar;
A guide groove provided in the load transmission member;
A load receiving projection provided integrally with the cross member, fitted in the guide groove, displaced in the guide groove according to the slide position of the seat, and receiving a load through the bottom of the guide groove;
The vehicle collision energy absorbing device according to claim 1, further comprising:

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