JP2007326441A - Side collision load transmitting structure and method of automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a side collision load transmitting structure of an automobile capable of transmitting side collision load to a seat back without loss to be dispersed to a vehicle body side by burying a space between a cabin inside wall and the seat back, regardless of the position of the seat back. <P>SOLUTION: This structure is provided with a projecting part 2 provided on an outward side face of a cabin of the seat back 2 and a vehicle body side load receiving part 3 arranged at a portion opposed to the seat back 12 of a door 20 and having a rigid variable bag body 100 having a forward/rearward adjustable hard part by making the vehicle width direction distal end 3t position correspond to a vehicle width direction distal end 2t position of the projecting part 2. By detecting the position of the seat back 12 on which an occupant sits and setting the hardened rigid variable bag body 100 at a position opposed to the projecting part 2, the side collision load F can be dispersed without loss along the rigid variable bag body 100 and the projecting part 2 from the seat back 12 to a vehicle body floor 30. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a side impact load transmission structure and a side impact load transmission method for an automobile in which side impact loads are distributed to a vehicle body side via a seat back.

In a vehicle, when a side collision occurs, the side impact load at that time is efficiently distributed to the vehicle body side, so that the collapse of the inner wall of the vehicle body can be suppressed and the living space for the occupant can be easily secured. For this reason, conventionally, a reinforcing member in the vehicle width direction is provided on the seat, and a reinforcing member is provided on the console box facing the vehicle width direction on the center side of the passenger compartment, so that the side impact load is detected by the door, door armrest, seat. There is known one that is dispersed on the cross member of the vehicle body floor via the reinforcing member of the above and the reinforcing member of the console box (see, for example, Patent Document 1).
JP 2005-67427 A

  However, in the conventional side impact load transmission structure, in the process of transmitting the side impact load from the door to the seat, the space between the inner panel of the door and the door trim, which is the side wall of the vehicle interior, and the door armrest and the seat (seat back) ), And the space, the door trim, and the armrest itself are crushed, and a load transmission loss occurs while the side impact load is received by the seat back. There is a possibility that the door may greatly enter the passenger compartment.

  Therefore, the present invention can fill the space between the vehicle interior side wall and the seat back regardless of the position of the seat back, and can transmit the side impact load to the seat back without loss and disperse it to the vehicle body side. A side impact load transmission structure and a side impact load transmission method for an automobile are provided.

  The automobile side impact load transmission structure according to the present invention opposes the seat-side load receiving portion provided on the exterior side surface of the seat back reinforced at least in the vehicle width direction, and the seat back on the side wall of the interior of the vehicle. A vehicle body side load receiving portion that has a movable support portion that can be adjusted in the longitudinal direction with the vehicle width direction tip position corresponding to the vehicle width direction tip position of the seat side load receiving portion, and a seat on which an occupant is seated A controller that detects a back position and sets the movable support portion to a position facing the seat-side load receiving portion, and keeps the seat-side load receiving portion and the movable support portion in contact with each other at the time of a side collision. Doing is the main feature.

  Further, the vehicle side impact load transmission method according to the present invention provides a seat-side load receiving portion on the outer side surface of the seat back that is reinforced with respect to a load in the vehicle width direction, while the seat back on the side wall of the vehicle interior. A vehicle body side load receiving portion having a movable support portion that can be adjusted in the front-rear direction with the vehicle width direction front end position corresponding to the vehicle width direction front end position of the seat side load receiving portion is provided at a portion opposite to the vehicle seat. The movable support portion is set at a position facing the seat side load receiving portion according to the seat back position, and the seat side load receiving portion and the rigid support portion are held in contact with each other at the time of a side collision. To do.

  According to the vehicle side impact load transmission structure and the side impact load transmission method of the present invention, the movable support portion of the vehicle body side load receiving portion is set at a position facing the seat side load receiving portion regardless of the movement position of the seat back. The seat-side load receiving portion and the movable support portion are always in contact or close to each other because the vehicle width direction front end positions thereof correspond to each other, and the space between the vehicle interior side wall and the seat back is set in these spaces. It can be filled with the seat side load receiving portion and the movable support portion.

  Therefore, as the side wall of the vehicle interior is deformed to the vehicle interior side at the time of a side collision, the seat side load receiving portion and the movable support portion abut securely, and the side impact load is not lost and the movable support portion and the seat side load receiving portion are lost. It is possible to disperse from the seat back reinforced against the load in the vehicle width direction to the vehicle body floor on which the seat is installed. For this reason, the side impact load can be distributed to the vehicle body side without greatly crushing the side wall of the vehicle interior, and the occupant's living space can be efficiently secured.

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

  1 to 8 show a first embodiment of a vehicle side impact load transmission structure and a side impact load transmission method according to the present invention, and FIG. 1 is a perspective view of a vehicle interior side portion where the side impact load transmission structure is installed. 2 is a perspective view showing a frame structure of a seat back provided with a seat side load receiving portion, FIG. 3 is an exploded perspective view of a door showing an installation portion of the vehicle body side load receiving portion, and FIG. 4 is an enlarged view of the vehicle side load receiving portion. FIG. 5 is an explanatory diagram of a flowchart for controlling the controller, FIG. 6 is a map for determining the setting position of the movable support used in the flowchart of FIG. 5, and FIG. 7 is a normal state of the side impact load transmission structure. FIG. 8 is a sectional plan view of the side collision load transmission structure in a side collision state.

  The side impact load transmission structure 1 for an automobile according to the present embodiment is provided between a seat 10 including a seat cushion 11 and a seat back 12 and a door 20 as a vehicle interior side wall as shown in FIG. The projecting load transmission structure 1 includes a projecting portion 2 as a seat-side load receiving portion provided on the outer side surface of the seat back 12 reinforced at least in the vehicle width direction, and the seat back 12 of the door 20. Rigidity variable bag body 100 as a movable support portion (see FIG. 3) that is arranged at the opposite part and can be adjusted back and forth by making the position of the tip 3t in the vehicle width direction correspond to the position of the tip 2t in the vehicle width direction of the protrusion 2 ) And the position of the seat back 12 on which the occupant is seated, and the controller 4 for setting the variable stiffness bag body 100 to a position facing the protruding portion 2 (see FIG. 3). If the provided, it adapted to hold a protruding portion 2 and the rigidity changing bag 100 during a side collision in contact with each.

  The seat 10 is installed on a cross member 31 where a seat cushion 11 serves as a reinforcing portion of the vehicle body floor 30 via a known seat slider, and the seat back 12 is arranged via a known seat back recliner, like a general seat. The seat cushion 11 is tiltably connected.

  The seat 10 is configured as a belt-in seat in which a seat belt device 13 is incorporated. The seat belt device 13 is configured as a three-point seat belt including a shoulder belt 13a and a lap belt 13b. The seatback 12 is inserted into the upper part on the vehicle exterior side and wound by a built-in retractor, and the lower end portion of the shoulder belt 13a is inserted into the tongue 13c and continues to the lap belt 13b. The front end of the lap belt 13b is fixed to an anchor provided on the outer side of the seat cushion 11, and the tongue 13c is detachably locked to an inner buckle 13d provided on the center of the seat cushion 11. Is done.

  As shown in FIG. 2, the seat back 12 includes a seat back frame 12F serving as a skeleton. The seat back frame 12F includes a pair of left and right side frames 12Fa and 12Fb and between the upper ends of the side frames 12Fa and 12Fb. The upper frame 12Fc and the lower frame 12Fd connecting the lower end portions are formed in a rectangular shape. The side frame 12Fa arranged outside the passenger compartment projects upward from the other side frame 12Fb, and a through anchor 13e that passes through the upper end portion of the shoulder belt 13a is attached to the front end portion of the side frame 12Fa. In the seat back frame 12F, braces 12Fe serving as reinforcing members in the vehicle width direction are coupled from the upper part of the side frame 12Fa outside the passenger compartment to the lower part of the opposite side frame 12Fb.

  The end of the bracing 12Fe on the center side of the passenger compartment is set to a height position substantially the same as the floor-side reinforcing member provided at the required height in the floor tunnel at the center of the floor panel 30.

  As shown in FIG. 3, the door 20 covers the door inner panel 21 and is attached with a door trim 22. The door inner panel 21 is provided with a door inside handle 23, and the door trim 22 is integrally formed with an armrest 24. ing.

  The protrusion 2 is formed in a short columnar shape as shown in FIG. 2, and the protrusion 2 is an upper part of the outer surface of the side frame 12Fa outside the passenger compartment at a portion where the upper end of the brace 12Fe is coupled. The protrusions 2 are correspondingly connected and protrude by a predetermined amount in the vehicle width direction from the outer side surface of the seat back.

  On the other hand, as shown in FIGS. 3 and 4, the vehicle body side load receiving portion 3 is configured by arranging a plurality of variable stiffness bags 100 enclosing a magnetic fluid that hardens when energized in the vehicle longitudinal direction. The load receiving portion 3 is attached between the door inside handle 23 and the rear end of the door inner panel 21 at the upper portion of the door inner panel 21 from which the door trim 22 is removed, specifically, at the upper end portion of the door inner panel 21.

  The vehicle body side load receiving portion 3 will be described in detail. As shown in FIG. 4, the plurality (six in this embodiment) of variable stiffness bags 100, a mounting plate 101 for attaching these variable stiffness bags 100, As shown in FIG. 3, a flexible cover portion 102 provided on the door trim 22 and covering the variable stiffness bag body 100 is provided.

  The mounting plate 101 is formed in a rectangular shape that is elongated in the vehicle front-rear direction, and a plurality of the plurality of variable stiffness bags 100 are arranged in the vehicle front-rear direction and attached to the side surface of the vehicle interior. A bent portion 101a coupled to the front end wall surface 21a of the door inner panel 21 is formed at the rear end portion.

  Further, a controller 4 for controlling a change in rigidity of the variable stiffness bag body 100 is attached to a front end portion of the attachment plate 101 to which the variable stiffness bag body 100 is attached. Are connected by lead wires 5, respectively.

  The rigid variable bag 100 is in close contact with the inner surface of the cover portion 102 in the assembled state, and the vehicle width side front end 3t position of the vehicle body side load receiving portion 3 when viewed from the vehicle front-rear direction, that is, the cover portion 102. The position in the vehicle width direction on the side surface of the vehicle interior is opposed to the position 2t of the protrusion 2 in the vehicle width direction.

  In the present embodiment, as shown in FIG. 1, a slide position sensor 6 is provided on the seat slider of the seat 10, and a recliner angle sensor 7 is provided on the seat back recliner. The position of the seat back 12 is detected from each signal output to the controller 4.

  The controller 4 selects the variable stiffness bag body 100 facing the protruding portion 2 in accordance with the flowchart shown in FIG. 5 and controls the energization of the variable stiffness bag body 100. That is, when the control is started by turning on the ignition key, first, in step S1, the open / closed state of the door 20 is confirmed by a door switch (not shown). If the door 20 is closed and a predetermined time has elapsed, the seat slider in step S2. In step S3, the tilt angle (RE-y) of the seat back 12 by the seat back recliner is read.

  In step S4, the position Bn (= B1, B2,... B6) of the variable stiffness bag body 100 corresponding to the protrusion 2 is determined by the vehicle body side load receiving portion 3 from the map shown in FIG. 6, and the determined position is determined in step S5. Electricity is supplied to the variable stiffness bag body 100 of Bn (B4 in this embodiment).

  In the map, positions Bn corresponding to SL-x and RE-y are shown in a matrix, and one or two of the positions Bn facing the protrusion 2 are selected, that is, the protrusion 2 has two rigidity. If it is determined that the variable bag body 100 is straddled, two positions Bn are selected.

  Therefore, in the control by the controller 4, after a passenger sits on the seat 10 and closes the door 20, when the predetermined time, that is, the time for adjusting the seat slider and the seat back recliner elapses, the controller 4 By detecting the position of the seat back 12 and selecting the position Bn of the variable stiffness bag body 100 facing the protruding portion 2, the selected one or two variable stiffness bag bodies 100 are cured by energization to be rigid. Become.

  At this time, since the non-selected variable stiffness bag body 100 is not energized, the state of the soft bag body in which the liquid is simply sealed is maintained. That is, as shown in FIG. 4, the vehicle body side load receiving portion 3 includes a portion where the protruding portion 2 faces, that is, a portion other than the cured rigid variable bag body 100, that is, an uncured rigid variable bag body 100. 103.

  With the above configuration, according to the vehicle side impact load transmission structure and the side impact load transmission method of the present embodiment, after the occupant sits on the seat 10 and closes the door 20, the position of the seat cushion 11 and the seat back 12 When the tilt angle is adjusted, the variable stiffness bag body 100 facing the protruding portion 2 is cured.

  For this reason, the projecting portion 2 and the cured variable stiffness bag body 100 are in contact with each other as shown in FIG. The space S between the seat back 12 and the seat back 12 can be filled with the projecting portions 2 and the variable stiffness bag 100.

  Therefore, as shown in FIG. 8, when the door 20 is deformed to the vehicle interior side at the time of a side collision, the projecting portion 2 and the variable stiffness bag body 100 are surely brought into contact with each other with the cover portion 102 interposed therebetween. The side impact load F passes through the variable stiffness bag 100 and the projecting portion 2 without loss, and straddles from the seat back 12 reinforced in the vehicle width direction by the brace 12Fe at the side of the seat back 12 on the center side of the vehicle body. It can be dispersed to the vehicle body floor 30 via the reinforcing member on the vehicle body floor 30 side disposed at substantially the same height as the 12Fe end and the cross member 31 on which the seat 10 is installed. For this reason, the side impact load F can be distributed to the vehicle body side without greatly crushing the door 20, and the living space of the occupant M can be efficiently secured.

  Further, in the present embodiment, since a plurality of variable stiffness bags 100 in which the vehicle body side load receiving portion 3 is filled with a magnetic fluid that is cured by energization are arranged in the vehicle front-rear direction, the plurality of variable stiffness bags 100 are arranged. Since it hardens and becomes rigid when electrified by selecting one or two, there is no need to provide a movable part in the vehicle body side load receiving part 3 and the structure can be simplified and the durability is reduced with less failure. Can be improved.

  Furthermore, in the present embodiment, the vehicle body side load receiving portion 3 uses the non-hardened rigid variable bag body 100 other than the hardened rigid variable bag body 100 opposed to the protruding portion 2 as the shock absorbing portion 103. As shown, when the occupant M moves outward from the passenger compartment due to inertial force and interferes with the vehicle body side load receiving portion 3 during a side collision, the impact at that time can be mitigated.

  9 to 11 show a second embodiment of the present invention, in which the same components as those in the first embodiment are denoted by the same reference numerals and redundant description is omitted, and FIG. FIG. 10 is an exploded perspective view of the vehicle body side load receiving portion, and FIG. 11 is an operation state of the movable support portion of the vehicle body side load receiving portion in order of (a) and (b). FIG.

  As shown in FIG. 9, the side collision load transmission device 1 </ b> A of the present embodiment is a protrusion provided on the outer side surface of the passenger compartment of the seat back 12 reinforced at least against the load in the vehicle width direction, as in the first embodiment. 2 (see FIGS. 1 and 2) and a portion of the door 20 facing the seat back 12, with the vehicle width direction tip 3t position corresponding to the vehicle width direction tip 2t position of the protrusion 2. And a vehicle body side load receiving portion 3A having a slider 110 as a movable support portion that can be adjusted in the front-rear direction.

  Further, as shown in FIG. 9, the vehicle body side load receiving portion 3A has two points between the door inside handle 23 and the rear end of the door inner panel 21 at the upper end portion of the door inner panel 21 as in the first embodiment. The door trim 22 is provided with a flexible cover portion 102 at a portion corresponding to the vehicle body side load receiving portion 3A.

  As shown in FIG. 10, the slider 110 is movably mounted on a base plate 111 extending in the front-rear direction via a drive mechanism 112.

  The base plate 111 is generally formed in a rectangular shape that is elongated in the vehicle front-rear direction. On the vehicle interior side, rail portions 111b are provided with raised U-shaped locking portions 111a on both upper and lower sides. A flange portion 111c for attachment to the door inner panel 21 is provided on the outer side of the passenger compartment via a leg portion 111d, and an attachment space Sa for attaching the drive mechanism 112 is provided between the leg portions 111d.

  The slider 110 has a substantially E-shaped cross section, and the outer bent portion 110c formed at the tip of the both end bent portions 110a and 110b is locked to the U-shaped locking portion 111a of the base plate 111. The slider 110 is slidable in the front-rear direction of the vehicle along the rail portion 111b in a state in which separation is prevented.

  A central protrusion 110d of the slider 110 is movably inserted in a slit 111e formed along the length direction of the base plate 111 at a substantially central portion of the rail portion 111b.

  The drive mechanism 112 includes a step motor 113 attached to the front end portion of the rail portion 111b, a drive gear 114 disposed in the front end portion of the attachment space Sa and fixed to the rotating shaft 113a of the step motor 113, and its attachment. The slider 110, which is disposed in the rear end portion of the space Sa and includes a driven gear 116 pivotally supported by the support shaft 115, and a cog belt 117 that rotates around the drive gear 114 and the driven gear 116, is inserted from the slit 111e. The front end of the central projecting piece 110d is fixed to the lower side of the cog belt 117.

  A controller 4 is coupled to the lower side of the step motor 113, and the controller 4 controls the rotation direction and the number of rotations of the step motor 113, and the cog belt 117 is driven by a drive gear 114 that is rotated by the step motor 113. Rotates with the driven gear 116, and as a result, the slider 110 moves along the rail portion 111b as shown in FIGS. 11 (a) and 11 (b).

  Further, in the present embodiment, as shown in FIG. 11, the shock absorbing portion is inserted between the bent portions 110a, 110b of the slider 110 and the central projecting piece 110d separately over the substantially entire length of the base plate 111. A pair of upper and lower shock absorbers 118, 118a are attached.

  Therefore, according to the present embodiment, the controller 4 performs the process substantially similar to the flowchart of FIG. 5 similarly to the first embodiment to move the slider 110 to a position corresponding to the protruding portion 2 of the seat back 12. It has become.

  That is, in the present embodiment, in the flowchart of FIG. 5, steps S1 to S4 are executed in the same manner, and after the door 20 is closed, the protruding portion is determined from the slide position of the seat cushion 11 and the tilt angle of the seat back 12. A position Bn corresponding to 2 is selected.

  In this embodiment, instead of step S5 in FIG. 5, the rotation direction and the number of rotations of the step motor 113 are controlled in order to move the slider 110 to the determined position Bn.

  For this reason, even in the present embodiment, the slider 110 of the vehicle body side load receiving portion 3 can be moved to a position facing the protruding portion 2 of the seat back 12 in the seated state of the occupant M. The space S between the back 12 can be filled with the protrusion 2 and the slider 110.

  Therefore, when the door 20 is deformed to the vehicle interior side at the time of a side collision, the projecting portion 2 and the slider 110 are reliably brought into contact with the cover portion 102 with the deformation, and the side collision load F is applied in the vehicle width direction. The seat back 12 reinforced to the vehicle body floor 30 can be dispersed to the vehicle body floor 30, and the side impact load F can be distributed to the vehicle body side without smashing the door 20 so that the living space for the occupant M can be efficiently secured. it can.

  In this embodiment, since the slider 110 is movably mounted on the base plate 111 extending in the front-rear direction via the drive mechanism 112, the slider 110 can reliably support a larger side impact load F. .

  In addition, since the pair of upper and lower shock absorbers 118, 118a are attached over substantially the entire length of the base plate 111, the vehicle body side load receiving portion 3A is a portion other than the slider 110 serving as a shock absorbing portion. When M moves outward from the passenger compartment due to inertial force and interferes with the vehicle body side load receiving portion 3A, the impact at that time can be mitigated.

  By the way, the present invention has been described by taking the first and second embodiments as examples. However, the present invention is not limited to these embodiments, and various other embodiments can be adopted without departing from the gist of the present invention.

The perspective view of the vehicle interior side part which installed the side collision load transmission structure in 1st Embodiment of this invention. The perspective view which shows the frame structure of the seat back which provided the seat side load receiving part in 1st Embodiment of this invention. The disassembled perspective view of the door which shows the installation part of the vehicle body side load receiving part in 1st Embodiment of this invention. The expanded perspective view of the vehicle body side load receiving part in 1st Embodiment of this invention. Explanatory drawing of the flowchart for controlling the controller in 1st Embodiment of this invention. The map which determines the setting position of the movable support part used with the flowchart of FIG. 5 in 1st Embodiment of this invention. The cross-sectional top view in the normal state of the side collision load transmission structure in 1st Embodiment of this invention. The cross-sectional top view in the side collision state of the side collision load transmission structure in 1st Embodiment of this invention. The disassembled perspective view of the door which shows the installation part of the vehicle body side load receiving part in 2nd Embodiment of this invention. The disassembled perspective view of the vehicle body side load receiving part in 2nd Embodiment of this invention. The perspective view which shows the operation state of the movable support part of the vehicle body side load receiving part in 2nd Embodiment of this invention later on in order to (a), (b).

Explanation of symbols

1, 1A Side impact load transmission structure 2 Protruding part (seat side load receiving part)
2t Front end in the vehicle width direction of the projecting portion 3, 3A Car body side load receiving portion 3t Front end in the vehicle width direction of the movable support portion 4 Controller 6 Slide position sensor 7 Recliner angle sensor 10 Seat 11 Seat cushion 12 Seat back 20 Door (vehicle interior side wall)
100 Stiffness variable bag (movable support)
103 Shock absorber 110 Slider (movable support)
111 Base plate 112 Drive mechanism 118, 118a Shock absorber (shock absorber)

Claims (5)

A seat-side load receiving portion provided on the outer side of the passenger compartment of the seat back reinforced at least with respect to the load in the vehicle width direction;
A vehicle body side load having a movable support portion which is disposed at a portion of the vehicle interior side wall facing the seat back and can be adjusted in the front-rear direction with the vehicle width direction tip position corresponding to the vehicle width direction tip position of the seat side load receiving portion. A receiver,
A controller that detects a seat back position where an occupant is seated and sets the movable support portion to a position facing the seat-side load receiving portion;
A side impact load transmission structure for an automobile, wherein the seat side load receiving portion and the movable support portion are held in contact with each other at the time of a side collision.   The side impact load transmission structure for an automobile according to claim 1, wherein the movable support portion is a plurality of variable stiffness bags arranged in the vehicle front-rear direction so as to enclose a magnetic fluid that hardens when energized.   2. The side impact load transmission structure for an automobile according to claim 1, wherein the movable support portion is a slider movably mounted on a base plate extending in the front-rear direction via a drive mechanism.   The side impact load transmission structure for an automobile according to any one of claims 1 to 3, wherein the vehicle body side load receiving portion is a shock absorbing portion other than the movable support portion.   A seat-side load receiving portion is provided on the outer side surface of the seat back that is reinforced with respect to a load in the vehicle width direction, and the front end position in the vehicle width direction is set at a portion facing the seat back on the side wall of the vehicle interior. A vehicle body side load receiving portion having a movable support portion that can be adjusted in the front-rear direction corresponding to the vehicle width direction front end position of the seat side load receiving portion is provided, and the movable support portion is placed on the seat side load according to the seat back position where the passenger is seated. A side impact load transmission method for an automobile, wherein the seat side load receiving portion and the rigid support portion are held in contact with each other at a position opposed to the receiving portion at the time of a side collision.

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