JPH0781465A - Seat mounting structure for automobile - Google Patents

Abstract

PURPOSE:To surely prevent the occupant's head from collision against the roof side part by providing a moving means for moving the seat to keep the head away from the roof side part in the side impact on the seat. CONSTITUTION:A cross member 14 is fixedly joined to the upper surface of a floor panel 4 and provided with a moving means 15 for moving a front seat inward of a car body in the side impact. That is, when impact load acts on the cross member 14 from a side sill 11 in the side impact, the cross member 14, while crushing a crush space 14a of the moving means 15, is deformed movably inside the car body. A bolt-like member 7 of a lower rail 6a outside the car body is slid in a second inserting hole 14d of a slider part 16 to move upward the lower rail 6a along an inclined surface part 14b and move a front seat 5 inside the car body so that the occupant's head Xa is kept away from a roof side rail 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile seat mounting structure, and more particularly to a measure for protecting an occupant's head during a side collision.

[0002]

2. Description of the Related Art Generally, in an automobile, as disclosed in, for example, Japanese Patent Application Laid-Open No. 3-65432, a door panel including an inner panel and an outer panel and an inner upper portion of the inner panel are provided. The inner reinforcement that forms a closed cross section that extends in the front-rear direction of the door panel together with the panel, the door trim that is attached to the inner side of the inner panel, and the opening formed in the inner panel penetrates the inner reinforcement to the vicinity of the inner reinforcement. Arranged between the inner reinforcement and the door trim so as to be arranged, and provided with a thick shock-absorbing material inward and outward of the door panel for alleviating the impact on the shoulder of the occupant that acts during a side collision. It has been known.
In this case, when the outer panel is deformed and the inner reinforcement is deformed by the impact applied at the time of the side collision, the impact cushioning material is projected through the opening of the inner panel to the vehicle interior side with the door trim, and The impact cushioning material that protrudes to the side protects the shoulder portion of the occupant during a side collision.

[0003]

By the way, in recent years, there has been a demand for protecting the head of an occupant during a side collision. In that case, since a roof side portion that extends in the front-rear direction of the vehicle body is normally provided on the outer side of the head of the occupant seated on the seat, an impact load is applied from the outer side of the vehicle body via the vehicle body member during a side collision. At this time, the head of the occupant comes into contact with the roof side.

The present invention has been made in view of the above points, and an object of the present invention is to provide means for positively moving the occupant's head away from the roof side portion during a side collision,
The purpose is to reliably prevent the head of an occupant from contacting the roof side.

[0005]

[Means for Solving the Problems] To achieve the above object, the means for solving the problems according to the invention as set forth in claim 1 is a seat mounting structure for an automobile, which is located outside the head of an occupant seated on the seat. A roof side portion that extends in the vehicle front-rear direction is provided. Then, when the seat receives a shock load from the outside of the vehicle body via the vehicle body member in a side collision, there is a moving means for moving the seat so as to keep the head of the occupant away from the roof side portion. While installing on the car body,
The moving means is configured to move the seat in conjunction with the deformation of the vehicle body member toward the inside of the vehicle body during a side collision.

Further, the solution means taken by the invention of claim 2 specifies the moving means of the invention of claim 1, and a cross extending in the vehicle width direction for supporting the seat through a pair of inner and outer slide mechanisms. A fragile crash space provided between the member and the cross member located between the slide mechanisms and crushing the cross member in the vehicle width direction during a side collision between the slide mechanisms, and a slide mechanism outer side on the vehicle body outer side. And a sloped surface provided on the upper surface of the cross member located on the outer side of the vehicle body so that the slide mechanism on the outer side of the vehicle body can be moved diagonally upward and outward of the vehicle body.

Further, the solution means taken by the invention of claim 3 specifies the moving means of the invention of claim 1, and is provided on the upper surface of the cross member extending in the vehicle width direction so as to be peelable, and the sheet A rigid member extending in the vehicle width direction supported through a pair of inner and outer slide mechanisms and a rigid member located on the inner side of the slide mechanism on the inner side of the vehicle body are provided on the inner side of the slide mechanism when a side collision occurs. And a fragile crash space that crushes in the vehicle width direction.

Further, the solution means taken by the invention of claim 4 specifies the moving means of the invention of claim 1, and slides on the outer side of the vehicle body of the pair of inner and outer slide mechanisms for supporting the seat. The tilt mechanism is provided in the mechanism and tilts the slide mechanism on the outer side of the vehicle body inward and downward in a side collision, and the slide mechanism on the inner side of the vehicle body. It is configured to include a falling means for lowering downward.

Further, the solution means taken by the invention of claim 5 specifies the moving means of the invention of claim 1 and extends in the vehicle width direction so as to support the seat through a pair of inner and outer slide mechanisms. A rigid body member that is rotatably supported upward through a shaft extending in the vehicle body front-rear direction at the vehicle body inside end position, and is arranged to face the vehicle body outside end position of the rigid body member,
A vehicle body member having an inclined surface that inclines toward the outer side of the vehicle body as it goes upward, and an inclined surface of the vehicle body member that is provided at the vehicle body outer end of the rigid body member and that rotates the rigid body member upward when a side collision occurs. And a sliding surface that slides upwards.

Further, the solution means taken by the invention of claim 6 specifies the moving means of the invention of claim 1, is provided on a cross member extending in the vehicle width direction, and a seat is provided with a pair of inner and outer sliding mechanisms. And a slide means for slidably supporting the inner side of the vehicle body via at least one of the slide mechanisms, and receives an impact load from the outer side of the vehicle body via the vehicle body member during a side collision. As described above, the auxiliary frame which is movable in the vehicle width direction and whose outer end is located at the outer end of the vehicle body is provided.

Further, the solution means taken by the invention of claim 7 specifies the moving means of the invention of claim 1, and slides on the inner side of the vehicle body of the pair of inner and outer slide mechanisms for supporting the seat. A tunnel portion to which the mechanism is attached and which extends in the front-rear direction of the vehicle body, and a slide mechanism which extends outwardly of the vehicle body in an inclined state forming an acute angle with respect to the tunnel portion and is attached to the vehicle body outer side are attached. And a floor panel that bends the vicinity of the slide mechanism so as to be lifted upward.

Further, the solution means taken by the invention of claim 8 specifies the moving means of the invention of claim 1,
A moving member that is provided between the seat and a pair of inner and outer slide mechanisms that support the seat and that moves the seat by an inertial force that acts on the seat when an impact load is applied from the outside of the vehicle body during a side collision. It is configured.

[0013]

With the above construction, in the invention according to claim 1,
The seat is designed so that passengers seated on the seat are interlocked with the deformation of the vehicle body members such as side doors, side sills, cross members and floor panels toward the inside of the vehicle body when an impact load is applied from the outside of the vehicle body during a side collision. The head will be moved away from the roof side. As a result, the distance between the occupant's head on the seat and the roof side portion is increased at the time of a side collision, and contact of the occupant's head with the roof side portion is reliably avoided.

According to the second aspect of the present invention, when an impact load acts on the cross member via the vehicle body member during a side collision, the cross member is interlocked with the deformation operation of the vehicle body member toward the inside of the vehicle body. It will be deformed and moved inward while crushing the crash space. Due to the deformation movement of the cross member, the slide mechanism on the outer side of the vehicle body slides outward along the inclined surface, that is, the head of the occupant seated on the seat is moved away from the roof side portion. The outer slide mechanism is moved upward along the inclined surface to move the seat inward of the vehicle body. As a result, the seat moves inward of the vehicle body in conjunction with the deformation of the vehicle body member during a side collision, and the distance between the head of the occupant seated on the seat and the roof side portion. Are effectively separated from each other, and contact of the head of the occupant with the roof side is reliably prevented.

According to the third aspect of the present invention, when an impact load is applied from the outside of the vehicle body through the vehicle body member during a side collision, the rigid body member is interlocked with the deformation operation of the vehicle body member toward the inside of the vehicle body. It is peeled off from the cross member and deforms and moves toward the inside of the car body while crushing the fragile crash space, and the deformation movement of this cross member moves the seat occupant's head away from the roof side. Each of the slide mechanisms positively moves to the inner side of the vehicle body, and the distance between the head of the occupant on the seat and the roof side is effectively separated, and the head of the occupant with respect to the roof side is separated. The contact of the parts is reliably prevented.

Further, in the invention according to claim 4, when the impact load acts on the body member at the time of a side collision and deforms, the slide mechanism on the outer side of the vehicle body is tilted downward by the tilting means toward the inner side of the vehicle body. The slide mechanism on the inner side of the vehicle body is moved downward by the downward movement means. As a result, the seat tilts inwardly and downwardly of the vehicle body in conjunction with the deformation of the vehicle body member so that the occupant's head on the seat is moved away from the roof side portion. The distance between the occupant's head and the roof side portion is effectively separated, and the contact of the occupant's head with the roof side portion is reliably prevented.

According to the fifth aspect of the present invention, when the impact load acts on the vehicle body member during a side collision to cause a deformation operation, the sliding surface of the rigid body member is on the inclined surface of the vehicle body member due to the deformation operation of the vehicle body member. Is slid upward and pushed up, and the rigid body member rotates upward with the shaft at the inner end position of the vehicle body as a fulcrum. As a result, the seat tilts inwardly and downwardly of the vehicle body in conjunction with the deformation operation of the vehicle body member so that the head of the occupant seated on the seat is moved away from the roof side portion. The distance between the upper occupant's head and the roof side is effectively separated,
The contact of the occupant's head with the roof side is reliably prevented.

According to the sixth aspect of the present invention, when the impact load acts on the vehicle body member during a side collision to cause a deformation operation, the auxiliary frame is pushed toward the inside of the vehicle body due to the deformation operation of the vehicle body member and moves. , Each slide mechanism is moved inward by the slide means. As a result, the seat moves inwardly of the vehicle body in conjunction with the deformation operation of the vehicle body member so that the head of the occupant seated on the seat is moved away from the roof side portion. The distance between the occupant's head and the roof side portion is effectively separated, and contact of the occupant's head with the roof side portion is reliably prevented.

According to the seventh aspect of the present invention, when the impact load acts on the vehicle body member during a side collision to cause a deformation operation, the floor panel is pushed inward by the deformation operation of the vehicle body member, and the tunnel portion is pushed. On the other hand, the outer end portion is deformed upward with the inner end portion of the floor panel having an acute angle as a fulcrum. As a result, the slide mechanism on the outer side of the vehicle body is lifted upward, and the seat tilts inward and downward of the vehicle body so that the head of the occupant seated on the seat is moved away from the roof side portion. The distance between the upper occupant's head and the roof side is effectively separated,
The contact of the occupant's head with the roof side is reliably prevented.

Further, according to the invention of claim 8, the seat has a head portion of the occupant seated on the seat and a roof side portion due to an inertial force applied when an impact load is applied from the outside of the vehicle body during a side collision. Since the moving member positively moves it away from the vehicle, the distance between the occupant's head on the seat and the roof side is increased during a side collision, and the occupant's head abuts against the roof side. Are similarly avoided.

[0021]

As described above, according to the seat mounting structure for an automobile in the first aspect of the invention, the seat is moved in association with the deformation operation of the body member toward the inner side of the body at the time of a side collision, and the seat is moved. Since the seat is moved so that the upper occupant's head is moved away from the roof side portion, it is possible to reliably prevent the occupant's head from contacting the roof side portion during a side collision.

According to the vehicle seat mounting structure of the second aspect of the invention, the seat is moved to the inner side of the vehicle body due to the deformation movement of the cross member which is interlocked with the deformation operation of the vehicle body member at the time of a side collision. Therefore, the head of the occupant on the seat can be effectively separated from the roof side portion at the time of a side collision to reliably prevent the contact with the roof side portion.

According to the seat mounting structure for an automobile in the third aspect of the invention, the seat is moved to the inner side of the vehicle body along with the deformation movement of the rigid body member which is interlocked with the deformation operation of the vehicle body member at the time of a side collision. Therefore, the head of the occupant on the seat can be effectively separated from the roof side portion at the time of a side collision to reliably prevent the contact with the roof side portion.

Further, according to the vehicle seat mounting structure of the invention of claim 4, the slide mechanism on the outer side of the vehicle body, which interlocks with the deformation operation of the vehicle body member at the time of a side collision, is tilted inward and downward of the vehicle body. Since the seat is tilted downward inward of the vehicle body due to the downward fall of the slide mechanism on the inward side of the vehicle body, the head of the occupant on the seat is effectively separated from the roof side during a side collision, and the roof side It is possible to reliably prevent contact with the portion.

According to the vehicle seat mounting structure of the fifth aspect of the present invention, the rigid body member, which is interlocked with the deformation operation of the body member at the time of a side collision, is rotated upward with the axis of the inner end position of the body member as a fulcrum. Since the seat is tilted downward inward of the vehicle body in accordance with the movement, the head of the occupant on the seat can be effectively separated from the roof side portion at the time of a side collision, and the contact with the roof side portion can be reliably prevented.

Further, according to the automobile seat mounting structure of the sixth aspect of the present invention, each slide mechanism associated with the movement of the auxiliary frame inward of the vehicle body is interlocked with the deformation operation of the vehicle body member at the time of a side collision. Since the seat is moved to the inside of the vehicle by moving to the inside of the vehicle, the head of the occupant on the seat is effectively separated from the roof side during a side collision to ensure contact with the roof side. Can be prevented.

Further, according to the automobile seat mounting structure of the invention, the upper end of the floor panel, which is interlocked with the deformation operation of the vehicle body member at the time of a side collision, is set above the outer end of the floor panel. Since the seat is tilted downward inward of the vehicle body in accordance with the deformation operation, the head of the occupant on the seat can be effectively separated from the roof side portion in the case of a side collision, and the contact with the roof side portion can be reliably prevented. .

Further, according to the vehicle seat mounting structure of the present invention, the occupant's head is moved away from the roof side portion by the inertial force when an impact load is applied from the outside of the vehicle body during a side collision. Since the seat is moved to the front, it is possible to reliably prevent the head of the occupant from coming into contact with the roof side portion at the time of a side collision.

[0029]

Embodiments of the present invention will be described below with reference to the drawings.

1 and 2 show a left passenger seat portion of an automobile to which a seat mounting structure according to a first embodiment of the present invention is applied, and 1 is a roof panel of a vehicle body A on the side of the roof panel 1. At the end, the cab side inner panel 2a
A roof side rail 2 as a roof side portion formed in a closed cross-sectional shape by the cab side outer panel 2b is provided. The roof side rail 2 is arranged so as to extend in the front-rear direction of the vehicle body outside the upper part of a front seat 5 (seat) mounted on a floor panel 4 forming the floor surface of the vehicle compartment 3. The front seats 5 are left and right (inside and outside)
A seat cushion 5a supported so as to be slidable in the vehicle front-rear direction via a pair of slide mechanisms 6, 6, a seat back 5b supported so as to be reclining with respect to the seat cushion 5a, and an upper end of the seat back 5b. And a headrest 5c provided in the section. In this case, the upper part of the front seat 5 corresponds to the headrest 5c, and the roof side rail 2 is arranged outside the headrest 5c.

Each of the slide mechanisms 6 has a lower rail 6a having a substantially inverted hat-shaped cross section extending in the longitudinal direction of the vehicle body.
And fixed to the lower surface of the seat cushion 5a via seat brackets 5d, 5d, and each of the lower rails 6a.
And an upper rail 6b having a substantially C-shaped cross section which is slidably supported with respect to. In addition, each lower rail 6a
The lower rail 6 is attached to the floor panel 4 of
It is configured by bolt-shaped members 7, ... Which project downward from the front and rear ends of a.

Further, at the side end of the floor panel 4,
A side sill 11 is provided, which is formed by a side sill inner panel 11a and a side sill outer panel 11b and has a closed cross section. Between the side sill inner panel 11a and the side sill outer panel 11b, a closed cross section by both panels 11a and 11b is provided. A reinforcement 11c for partitioning inward and outward is provided. The side sill 11 is arranged so as to extend in the vehicle front-rear direction at the outer lower end position of the front seat 5. A door opening 13 opened and closed by the side door 12 is provided between the roof side rail 2 and the side sill 11.
The side end of the floor panel 4 is joined and fixed to the upper end of the side sill inner panel 11a of the side sill 11.

On the upper surface of the floor panel 4 corresponding to the front and rear ends of each of the lower rails 6a, a cross member 14 having a quadrangular cross section as a vehicle body member extending in the lateral direction of the vehicle body.
The lower surface (only the front side is shown in the figure) is bonded and fixed,
The cross member 14 is bonded and fixed to the side sill inner panel 11a together with the floor panel 4 at the outer end thereof, and conforms to the cross-sectional shape of the tunnel portion 4a extending in the vehicle front-rear direction and projecting from the floor panel 4 at the center of the vehicle body. It is formed in a convex shape. In addition, the cross member 14
When the vehicle receives a shock load from the outside of the vehicle body (outside of the vehicle body) via a vehicle body member during a side collision, the headrest 5c of the front seat 5 moves away from the roof side rail 2 and the front seat 5 A moving unit 15 that positively moves toward the inside of the body is provided.

The moving means 15 is, as shown in FIG.
A fragile crash space 14a which is provided in the middle of the cross member 14 corresponding to each of the lower rails 6a, 6a, the cross-sectional shape of the cross member 14 is locally reduced, and is crushed by an impact load from the outside of the vehicle body. An inclined surface portion 14b as an inclined surface integrally formed at an end position on the upper surface of the cross member 14 located on the vehicle outer side of the crash space 14a and inclined so as to be located higher as it goes outward of the vehicle body. A slider portion 16 which is provided to project slightly above the inclined surface portion 14b and is elongated inward and outward in the vehicle body, and a substantially elliptical slider portion 16 and an upper surface inner side position of the cross member 14, which is opened at the vehicle body inner side. A circular first insertion hole 14c into which the bolt-shaped member 7 of 6a is inserted, and the slider portion 16 (inclined surface portion 14b).
The second insertion hole which is open in the inner and outer directions of the vehicle body and which is inserted so that the bolt-shaped member 7 of the lower rail 6a on the outer side of the vehicle body is slidably movable in the inner and outer direction of the vehicle body. 14d and. In this case, the lower surface of the lower rail 6a on the outer side of the vehicle body is
It is in sliding contact with the slider portion 16, and the bolt-shaped member 7 slides by slidingly moving in the second insertion hole 14d of the slider portion 16.

The seat bracket 5d on the outer side of the vehicle body
Is a slide mechanism 6 that is inclined on the outer side of the vehicle body.
The cross section is formed in a substantially triangular shape in front and rear view of the vehicle body so as to absorb an angle formed by the lower surface of the seat cushion 5a.

Therefore, in the above embodiment, the impact load is applied via the side sill 11 to the cross member 14 at the time of side collision.
As shown in FIG. 2, the cross member 14 is deformed toward the inner side of the vehicle body while crushing the crash space 14a. Due to this deformation of the cross member 14, the bolt-shaped member 7 of the lower rail 6a on the outer side of the vehicle body slides outward in the second insertion hole 14d of the slider portion 16, that is, the seat cushion 5a of the front seat 5. Head Xa of occupant X sitting on top
Is moved away from the roof side rail 2, the lower rail 6a on the outer side of the vehicle body is moved upward along the inclined surface portion 14b to move the front seat 5 to the inner side of the vehicle body (inner side of the vehicle body). As a result, the front seat 5 moves inwardly of the vehicle body in conjunction with the deformation of the cross member 14 at the time of a side collision, and the head of the occupant X seated on the seat cushion 5a of the front seat 5. Xa
And the roof side rail 2 are effectively separated from each other, so that the head Xa of the occupant X can be reliably prevented from contacting the roof side rail 2.

In the first embodiment, the moving means 15
The cross member 1 between the lower rails 6a, 6a.
4. The front seat 5 is moved to the inner side of the vehicle body by the deforming operation toward the inner side of the vehicle body while crushing the crash space 14a in which the closed cross section in the middle is locally made small. As shown in FIGS. In addition, the rigid member 17 having a substantially hat-shaped cross section is formed on the upper surface of the cross member 14 disposed between the side sill 11 and the tunnel portion 4a so that the wavy surface of the central portion is easily peeled off by an impact load at the time of a side collision. In addition to joining and fixing at sparse intervals, the lower rails 6a, 6a are attached to the rigid member 17, and a wavy fragile crash space 17a provided between the lower rail 6a on the inner side of the vehicle body and the tunnel portion 4a causes a side collision. When an impact load is applied from the outside of the vehicle body via the side door 12 via the side sill 11 and the side door 12, the side sill 11 and the support The rigid member 17 is peeled off from the cross member 14 in association with the deformation of the door 12 toward the inside of the vehicle body, deforms and moves toward the inside of the vehicle body while crushing the crash space 17a, and the deformation movement of the cross member 14 causes The head Xa of the occupant X seated on the front seat 5 (seat cushion 5a) is attached to the roof side rail 2
Install the front seat 5 on each lower rail 6 to keep it away from
It may be configured to positively move the inside of the vehicle a to the inside. In this case, the outer end of the rigid member 17 is extended upward and overlaps the lower end of the side door 12, and the side door 1 when the impact load at the time of a side collision acts.
The deformation operation of No. 2 is easily transmitted to the rigid member 17. In addition, in FIG. 4, a cross mark indicated by a broken line indicates a joining portion.

Next, a second embodiment of the present invention will be described with reference to FIGS. In the second embodiment, the front seat is moved in association with the deformation operation of the side door (note that the same parts as those in the above embodiment are designated by the same reference numerals and their detailed description will be given). Omitted).

That is, in this example, the moving mechanism 15 is a tilting mechanism 21 as a tilting means for tilting the lower rail 6a on the vehicle outside by the deformation operation of the side door 12 toward the vehicle inside. And a lowering mechanism 22 as a lowering means for lowering the lower rail 6a on the inner side of the vehicle body in accordance with the tilting of the lower rail 6a on the outer side of the vehicle body by the tilting mechanism 21.

The tilting mechanism 21 is provided by extending the inside of the side sill inner panel 11a in the front-rear direction of the vehicle body, and has a seat guide bar 23 having an annular cross section and rotatable about its axis, and the seat guide bar 23. A tilting member 24 having a substantially L-shaped cross section, the lower surface of the outer end of which is fixedly attached to the outer peripheral surface of which and the lower rail 6a on the outer side of the vehicle body is attached to the inner end thereof. The seat guide bar 23 has an outer end portion of the cross member 14 fixed to the upper surface of the floor panel 4,
Behind it is rotatably supported in a suspended state between the inner side surface of the side sill inner panel 11a and the energy absorbing box 25 fixed to the side end portion of the floor panel 4, and the side surface between the both 14 and 25. It also has a function as an impact bar that absorbs the impact load from the side door 12 at the time of collision by the deformation toward the inner side of the vehicle body as shown by the phantom line (dashed line) in FIG. Further, the tilting member 24 is fixed to the outer peripheral surface of the seat guide bar 23 via ribs 24a, 24a that are integrally formed in a substantially triangular shape in a vehicle front-rear view so as to be sandwiched from the vehicle left-right direction. A protrusion 24b is provided at a position above the outer end of the tilting member 24 so as to be opposed to a door reinforcing rib 12a that connects the lower end position inside the side door 12 inward and outward. It is integrally formed. Incidentally, 14e and 25a are rubbers for sealing the front and rear ends of the sheet guide bar 23 to the through hole 14f of the cross member 14 and the through hole 25b of the energy absorbing box 25. Also, 23a, 23a
Attach the front and rear ends of the sheet guide bar 23 to the cross member 14
It is a stopper pin for supporting the inside and the energy absorbing box 25.

On the other hand, the lowering mechanism 22 has a bracket 26 having a substantially hat-shaped cross section, the upper and lower ends of which are joined and fixed to the slope of the tunnel portion 4a of the floor panel 4 and which extends in the vehicle front-rear direction.
And a slide mechanism 27 provided at the front and rear ends of the lower rail 6a on the inner side of the vehicle body to slide the lower rail 6a inward and outward of the vehicle body (only the front side of the vehicle body is shown in the figure), and the lower side of the slide mechanism 27. A support member 28 having a fixing portion 28a for fixing a rail 27b (described later) on a flat plate-shaped outer portion, and supporting the slide mechanism 27 on the bracket 26 by an inner portion formed in a substantially U-shaped cross section; A notch hole 28b formed in the inner surface of the inner portion of the support member 28 and opened upward is inserted through a washer 29a, and a weld nut 26a fixed to the bottom of the bracket 26 is inserted through a through hole 26b. And a bolt member 29 that is screwed together. The slide mechanism 27 is fixed to the lower rail 6a on the inner side of the vehicle body, and has an upper rail 27a extending inward and outward from the vehicle body and the upper rail 2a.
And a lower rail 27b slidably supported inward and outward with respect to 7a.

In this case, when an impact load acts on the side door 12 during a side collision, the side door 12 is pushed inward of the vehicle body and deforms. By this deformation operation of the side door 12, the projection 24b is pushed inward of the vehicle body, and the tilting member 24 is tilted around the seat guide bar 23 downward inward of the vehicle body. At that time, the load for tilting the tilting member 24 downward inward of the vehicle body is applied to the seat cushion 5.
By being transmitted to the lower rail 6a on the inner side of the vehicle body via a, as shown by a virtual line (two-dot chain line) in FIG.
The bolt member 29 is disengaged from the notch hole 28a of the support member 28, and the lower rail 6a on the inner side of the vehicle body is moved downward by the slide mechanism 27 while being moved to the inner side of the vehicle body.
Smoothly incline downward toward the inside of the vehicle. As a result, the front seat 5 tilts inwardly and downwardly of the vehicle body in conjunction with the deformation operation of the side door 12 so that the head Xa of the occupant X on the seat cushion 5a is moved away from the roof side rail 2. At the time of a side collision, the head Xa of the occupant X seated on the front seat 5 and the roof side rail 2
Effectively separate the distance between the roof side rail 2
It is possible to reliably prevent the head Xa of the occupant X from coming into contact with the vehicle.

Next, a third embodiment of the present invention will be described with reference to FIGS. 11 to 13. In the third embodiment, the front seat is moved by the deformation operation of the side sill.

That is, in this example, the moving means 15 is pivotally supported by the rigid member 31 extending between the side sill 11 and the tunnel portion 4a in the cross member 14, and the inner end portion of the rigid member 31. The side sill inner panel 11a of the side sill 11 as a vehicle body member that is disposed to face the vehicle body front-rear axis 32 and the rigid body member 31 at the vehicle body outer end position.
And an inclined surface 11d which is formed on the outer side of the rigid member 31 and is located at the upper side as it goes outward of the vehicle body. A slidable sliding surface 31a that slidably contacts,
A mount portion 31 that is provided so as to project from the upper surface of the rigid member 31 and that secures the end portions of the lower rails 6a through opening holes 14g and 14g that open to the upper surface of the cross member 14.
b and 31b. The outer end portion of the rigid member 31 is connected by simple joining in a state where the sliding surface 31a is slidably contacting the inclined surface 11d of the side sill inner panel 11a, and both of them are impacted by a side impact. The joint (connection) is designed to come off. A crash space 14a is provided at the outer end of the cross member 14 (outside the outer opening 14g) so as to be crushed by an impact load during a side collision.

In this case, when an impact load acts on the side sill 11 at the time of a side collision, the side sill 11 is pushed inward of the vehicle body and deforms. Then, as shown in FIG. 12, the sliding surface 31a of the rigid member 31 is deformed by the deforming operation of the side sill 11 to the side sill inner panel 1.
The rigid member 31 is pushed up so as to slide upward on the inclined surface 11d of the la, and the rigid member 31 projects the mount portion 31b from each opening hole 14g while crushing the crash space 14a of the cross member 14 and fulcrums the vehicle body front-rear shaft 32. It will rotate upwards. This allows the front seat 5
Is the head Xa of the occupant X seated on the front seat 5.
In order to move the vehicle away from the roof side rail 2, the side sill 11 is interlocked with the deformation operation of the side sill 11 to incline downward toward the inside of the vehicle body, and the head Xa of the occupant X on the front seat 5 and the roof side rail during a side collision. The distance between the head side Xa of the occupant X and the roof side rail 2 can be reliably prevented from coming into contact with the roof side rail 2.

Next, a fourth embodiment of the present invention will be described with reference to FIGS. In the fourth embodiment, the front seat is moved by the deformation operation of the side sill and the side door.

That is, in this example, the front side moving means 41 for moving the front side of the front seat 5 to the inner side of the vehicle body by moving the moving means 15 to the inner side of the vehicle body at the front end of each lower rail 6a by the deformation operation of the side sill 11. And rear side moving means 42 for moving the rear side of the front seat 5 to the inner side of the vehicle body by moving the rear end of each lower rail 6a to the inner side of the vehicle body by the deformation operation of the side door 12.

The front side moving means 41 is constituted by each lower rail 6
a Long holes 14h, 14h, which are provided on the upper surface of the cross member 14 having a substantially hat-shaped cross-section corresponding to the front end of the cross member, and through which the bolts 43 for mounting the front ends of the lower rails 6a are inserted and which have a long diameter inward and outward of the vehicle body. And a front auxiliary frame 44 having a substantially hat-shaped cross section that is joined to the lower surface of the floor panel 4 and extends in the vehicle front-rear direction between the side sill 11 and the tunnel portion 4a, and the position immediately after the cross member 14 of the front auxiliary frame 44. The seat bracket 45 attached to the front end of the lower rail 6a on the inner side of the vehicle body is fastened and fixed to the front end position by the bolt 43. The inner branch portion 44a and the front side auxiliary frame 44 are branched to the outer side at the position immediately after the cross member 14 and the side. Ruin'napaneru 11a and outer branch portion 44 through the side sill reinforcement 11c are bonded secured to the side sill outer panel 11b
and b. The bolt 43 for mounting the lower rail 6a on the inner side of the vehicle body is inserted into a spacer 46 penetrating the front auxiliary frame 44, the floor panel 4, the cross member 14 and the seat bracket 45, respectively, and is fastened and fixed by a nut 47. There is. The bolt 43 for mounting the lower rail 6a on the outer side of the vehicle body is fastened and fixed by a nut (not shown) only through the elongated hole 14h of the cross member 14. Then, the cross member 14
An elliptical rubber 48 having an insertion hole 48a that opens so as to hold each of the bolts 43 at the vehicle outer end position inside the elongated hole 14h is fitted into each elongated hole 14h.

On the other hand, the rear side moving means 42 is arranged so as to extend inwardly and outwardly of the vehicle body below the rear end position of each lower rail 6a, and the inner end is fixed to the upper surface of the tunnel portion 4a and has a substantially U-shaped cross section. And a side collision energy absorption bar 53 having a closed cross-section, the outer end of which is joined and fixed to an inner pillar 52a of a center pillar 52 which is erected at a substantially intermediate position of the side sill 11 in the vehicle longitudinal direction. The side impact energy absorbing bar 53 is slidably provided inward and outward of the vehicle body, the inner end of which is pierced and supported by the outer surface of the support member 51, while the outer end of the center pillar 52 is provided. The inner end surface of the side door 12 which is supported by the inner pillar 52a, the pillar reinforcement 52c, and the outer pillar 52b in a penetrating manner and whose outer end overlaps with the center pillar 52. A movable bar 54 as an auxiliary frame extending to a side position, bolt-shaped seat brackets 55, 55 fixed to the movable bar 54 and having rear ends of the lower rails 6a attached thereto, and the side impact energy absorbing bar 53. Elongated holes 53a, 53a are provided on the upper side, respectively, and serve as moving means having a long diameter inward and outward of the vehicle body through which the seat brackets 55 are inserted. Further, the seat brackets 55 are provided in the elongated holes 53a of the side collision energy absorbing bar 53, respectively.
An elliptical rubber 56 having an insertion hole 56a opened so as to be held at the outer end position of the vehicle body in a is fitted.

In this case, when an impact load acts on the side sill outer panel 11b during a side collision, the side sill outer panel 11b is pushed inward of the vehicle body and deforms. And this side sill outer panel 11
By the deforming operation of b, the outer branch portion 44b of the front auxiliary frame 44 is pushed to the inner side of the vehicle body together with the inner branch portion 44a, and the bolts 43 for mounting the front ends of the lower rails 6a deform the rubber 48 and inside the elongated hole 14h. Move to the inner end position of the car body. On the other hand, when an impact load acts on the side door 12 that overlaps the center pillar 52 during a side collision, the side door 12 is pushed toward the inside of the vehicle body and deforms. 5
4 is pushed and slides inside the side impact energy absorption bar 53 toward the inner side of the vehicle body, and the seat bracket 55 for attaching the rear end of each lower rail 6a deforms the rubber 56 and the elongated hole 53.
Move to the inner end position of the vehicle in a.

As a result, the front and rear ends of the front seat 5 are positioned at the head Xa of the occupant X seated on the front seat 5.
So as to move away from the roof side rails 2, the side sill outer panel 11b and the side door 12 are interlocked with the deformation operations of the side sill outer panel 11b and the side door 12, respectively, so that the head X of the occupant X on the front seat 5 during a side collision occurs.
The distance between a and the roof side rail 2 can be effectively separated to surely prevent the head Xa of the occupant X from contacting the roof side rail 2.

In the fourth embodiment, the front moving means 4
Although the moving means 15 configured to move the front and rear ends of the front seat 5 to the inner side of the vehicle body is constituted by 1 and the rear side moving means 42, the moving means is constituted by a single front side moving means or rear side moving means. You may do it.

Next, a fifth embodiment of the present invention will be described with reference to FIG. In the fifth embodiment, the front seat is moved by the deformation operation of the floor panel.

That is, in this example, the moving means 15 is provided with a tunnel portion 4a extending in the vehicle front-rear direction, in which the vertical surface adjacent to the central portion of the floor panel 4 is inclined so that the lower side is located inward of the vehicle body. The front seat 5 extends outwardly of the vehicle body in an inclined state of being positioned downward as it approaches the tunnel portion 4a side so as to form an acute angle with the vertical surface of the tunnel portion 4a.
The floor panel 4 having an inclined surface forming a portion located below the vehicle and the lower rail 6a on the outer side of the vehicle body.
An outer seat bracket 61 that supports the upper outer end position,
The lower rail 6a on the inner side of the vehicle body is constituted by an inner seat bracket 62 that supports the lower rail 6a at the upper end position of the vertical surface of the tunnel portion 4a.

In this case, when a shock load is exerted on the floor panel 4 through the side sill 11 as a vehicle body member at the time of a side collision, the floor panel 4 is pushed toward the inside of the vehicle body and a phantom line (two-dot chain line) is shown in FIG. ), The tunnel section 4
The outer end (outer seat bracket 61) is deformed upward with the inner end (inner seat bracket 62) of the floor panel, which is an acute angle to a, as a fulcrum. As a result, the lower rail 6a on the outer side of the vehicle body is lifted up, and the head X of the occupant X seated on the front seat 5 is lifted.
The front seat 5 tilts inwardly and downwardly of the vehicle body so as to move away a from the roof side rail 2, and the distance between the roof side rail 2 and the head Xa of the occupant X on the front seat 5 at the time of a side collision is reduced. Can be effectively separated.

Next, a sixth embodiment of the present invention will be described with reference to FIGS. In the sixth embodiment, the structure of the moving means is changed.

That is, in this example, the moving means 15 is constituted by the slide mechanism 6 and the seat cushion 5 of the front seat 5.
The front on the floor panel 4 is placed by the inertial force when an impact load is applied from the outside of the vehicle body through the vehicle body members such as the side sill 11 and the side door 12 at the time of a side collision, which are arranged at the front and rear positions with respect to a. An inertial force moving member 71 (only the front side is shown in the figure) as a moving member that is long inward and outward of the vehicle body for moving the seat 5 inward of the vehicle body.

Since the inertial force moving members 71 have the same structure, only the front side member shown in the figure will be described. However, the substantially box-shaped projecting members 72, 72 fixed to the front side positions of the upper surfaces of the upper rails 6b will be described. Pin 7 protruding from the front
The seat cushion 5 has a slide guide groove 74 for supporting the 3a and 73b so as to be slidably guided inward and outward from the vehicle body.
The front side position of the lower surface of a is extended and fixed inward and outward in the vehicle body. The sliding guide groove 74 includes the pins 73a,
Horizontal parts 74 for supporting 73b respectively in normal times
a and 74b, and a horizontal portion 74a that supports the pin 73a on the inner side of the vehicle body are continuously provided on the inner side of the vehicle body. A curved portion 74c that curves inward and a horizontal portion 74b that supports the pin 73b on the outer side of the vehicle body are continuously provided on the inner side of the vehicle body, and the pin 73a on the inner side of the vehicle body that slides on the curved portion 74c. Accordingly, a substantially concave bent portion 74d, which is recessed downward from the horizontal portion 74b in a stepwise manner, is integrally formed continuously.

In this case, when an impact load is applied via the side sill 11 and the side door 12 during a side collision, this impact load is applied via the floor panel 4 to the front seat 5.
Inertia force is applied to. At that time, the movement of the front seat 5 to the inner side of the vehicle body due to the inertial force from the outer side of the vehicle body that acts at the time of a side collision is such that the end portion of the horizontal portion 74b on the outer side of the vehicle body in a normal state (before the side collision). That is, the front seat 5 is regulated by the pin 73b on the vehicle body outer side located at the end of the sliding guide groove 74 on the vehicle body outer side, and the movement of the front seat 5 to the vehicle body inward side due to its inertial force is regulated. As shown in FIG. 21, the pin 73a on the inner side of the vehicle body is swung back toward the inside.
So that the head portion Xa of the occupant X seated on the front seat 5 is moved away from the roof side rail 2 by sliding the vehicle side toward the curved portion 74c and the outer side pin 73b toward the bent portion 74d. , To more effectively separate the distance between the roof side rail 2 and the head Xa of the occupant X on the front seat 5 at the time of a side collision by tilting the seat cushion 5a of the front seat 5 inward of the vehicle body. You can

In the sixth embodiment, the horizontal portion 74
Although the a and 74b, the curved portion 74c and the bent portion 74d are integrally formed, the sliding guide groove is provided for each pin so that the horizontal portion and the curved portion or the bent portion of each pin are individually formed. It may be divided into two parts.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional front view of the vicinity of a front seat showing a normal state of a seat mounting structure according to a first embodiment.

FIG. 2 is a vertical sectional front view of the vicinity of a front seat showing a side collision state according to the first embodiment.

FIG. 3 is a plan view around a cross member according to the first embodiment.

FIG. 4 is a perspective view around an inner end portion of a cross member according to a modification of the first embodiment.

FIG. 5 is a vertical cross-sectional front view of an outer end portion of a cross member according to a modification of the first embodiment.

FIG. 6 is a vertical sectional front view of the vicinity of a tilting mechanism according to a second embodiment.

FIG. 7 is a perspective view according to FIG.

FIG. 8 is a vertical sectional side view in the vicinity of a sheet guide bar according to a second embodiment.

FIG. 9 is a perspective view of a lowering mechanism and its vicinity according to a second embodiment.

FIG. 10 is a vertical cross-sectional front view of the falling mechanism according to the second embodiment cut near the bolt.

FIG. 11 is a view corresponding to FIG. 1 according to the third embodiment.

FIG. 12 is a view corresponding to FIG. 2 according to the third embodiment.

FIG. 13 is a view corresponding to FIG. 3 according to the third embodiment.

FIG. 14 is a vertical cross-sectional front view of the vicinity of an outer branch portion of the front auxiliary frame according to the fourth embodiment.

FIG. 15 is a bottom view of the vicinity of the rear portion of the front auxiliary frame according to the fourth embodiment.

FIG. 16 is a perspective view of front-side moving means and rear-side moving means according to the fourth embodiment.

FIG. 17 is a vertical cross-sectional side view near the lower rail mounting bolt on the inner side of the vehicle body according to the fourth embodiment.

FIG. 18 is a vertical cross-sectional front view of the rear side moving means according to the fourth embodiment.

FIG. 19 is a view corresponding to FIG. 1 according to the fifth embodiment.

FIG. 20 is a view corresponding to FIG. 1 according to the sixth embodiment.

FIG. 21 is a view corresponding to FIG. 2 according to the sixth embodiment.

FIG. 22 is a perspective view of moving means according to the sixth embodiment.

[Explanation of reference numerals] 2 roof side rail (roof side part) 4 floor panel (body member) 4a tunnel part 5 front seat (seat) 6 sliding mechanism 11 side sill (body member) 11d inclined surface 12 side door (body member) 14 Cross member (car body member) 14a Crash space 14b Sloping surface portion (slope surface) 14h Long hole (sliding means) 15 Moving means 17 Rigid member 17a Crash space 21 Tilting mechanism (tilting means) 22 Falling mechanism (falling means) 31 Rigid body member 31a Sliding surface 44 Front auxiliary frame 53a Long hole (sliding means) 54 Moving bar (auxiliary frame) 71 Inertial force moving member (moving member) X Occupant Xa Head

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mitsuru Fujinaka 3-1, Shinchi, Fuchu-cho, Aki-gun, Hiroshima Mazda Motor Corporation

Claims (8)

[Claims] 1. A roof side portion extending in the front-rear direction of the vehicle body is provided on the outer side of the head of an occupant seated on the seat, and the seat is impacted from the outer side of the vehicle body via a vehicle body member during a side collision. When a load is applied, the vehicle has a moving means for moving the seat so as to move the head of the occupant away from the roof side portion, and the moving means is attached to the vehicle body. A seat mounting structure for an automobile, characterized in that the seat is moved in association with an inward deformation of the vehicle body. 2. The moving means is provided on a cross member extending in the vehicle width direction for supporting the seat via a pair of inner and outer slide mechanisms, and a cross member located between the slide mechanisms, and between the slide mechanisms. The fragile crash space that crushes the cross member in the vehicle width direction in the event of a side collision, and the slide mechanism on the outer side of the vehicle body. The seat mounting structure for an automobile according to claim 1, further comprising: an inclined surface that is movable obliquely upward. 3. The moving means is provided on the upper surface of a cross member extending in the vehicle width direction so as to be peelable, and supports a seat via a pair of inner and outer slide mechanisms. The rigid member extends in the vehicle width direction and the inner side of the vehicle body. The rigid body member located on the inner side of the slide mechanism is provided with a fragile crash space for crushing the rigid body member in the vehicle width direction at the time of a side collision on the inner side of the slide mechanism. Seat mounting structure for the vehicle described. 4. The moving means is provided on a slide mechanism on an outer side of the vehicle body of a pair of inner and outer slide mechanisms for supporting a seat, and the slide mechanism on the outer side of the vehicle body is tilted downward toward the inner side of the vehicle body when a side collision occurs. 2. The vehicle seat according to claim 1, further comprising: tilting means for causing the sliding mechanism on the inner side of the vehicle body, and lowering means for lowering the sliding mechanism on the inner side of the vehicle body in the event of a side collision. Mounting structure. 5. The moving means extends in the vehicle width direction so as to support the seat through a pair of inner and outer slide mechanisms, and is rotatably supported upward at an inner end position of the vehicle body via a shaft extending in the vehicle front-rear direction. A rigid body member, a vehicle body member having an inclined surface that is disposed to face the vehicle body outer end position of the rigid body member and inclines toward the vehicle outer side as it goes upward, and a side surface provided on the vehicle body outer end of the rigid body member. The seat mounting structure for an automobile according to claim 1, further comprising: a sliding surface that slides upward on an inclined surface of the vehicle body member so as to rotate the rigid member upward in a collision. 6. The moving means is provided on a cross member extending in the vehicle width direction, and supports the seat so as to be slidably movable inward of the vehicle body through a pair of inner and outer slide mechanisms, and each of the slide mechanisms. An auxiliary frame that is movable in the vehicle width direction with its outer end located at the outer end of the vehicle body so as to receive an impact load from the outside of the vehicle body via the vehicle body member in the event of a side collision. The vehicle seat mounting structure according to claim 1, further comprising: 7. The moving means has a tunnel portion extending in the vehicle body front-rear direction, to which a slide mechanism on the inner side of the vehicle body of a pair of inner and outer slide mechanisms for supporting a seat is attached, and an acute angle with respect to the tunnel portion. It is provided with a floor panel that extends to the outside of the vehicle body in an inclined state and has a slide mechanism on the outer side of the vehicle body attached, and bends to lift up the vicinity of the slide mechanism on the outer side of the vehicle body in the event of a side collision. The seat mounting structure for an automobile according to claim 1. 8. The moving means is provided between a seat and a pair of inner and outer sliding mechanisms that support the seat, and is driven by an inertial force acting on the seat when an impact load is applied from the outside of the vehicle body during a side collision. The seat mounting structure for an automobile according to claim 1, further comprising a moving member for moving the seat.