JP6555741B2 - Vehicle rear seat structure - Google Patents

Description

  The present invention relates to a rear seat structure of a vehicle. In particular, the present invention relates to a vehicle rear seat structure that can effectively prevent an occupant from sliding on a rear seat cushion toward the vehicle front side in the event of a vehicle collision.

  The so-called submarine, which is mounted on the cushion pad of the seat cushion on the rear seat of an automobile, slides on the rear seat cushion to the front side of the vehicle and dive under the seat belt by stopping the passenger in the event of a vehicle collision. A slip regulating member for regulating the phenomenon is provided. For example, a rear seat slip regulating member (hard cushion material) shown in Patent Document 1 is mounted on a cushion pad (soft cushion seat) in a state of being placed on a substantially horizontal plane of a floor panel (vehicle floor). . The cushion pad is integrated with a frame-like cushion frame, and the cushion frame is fixed to the vehicle floor.

JP 2012-51439 A

  It is desired to effectively suppress the sliding of the occupant toward the vehicle front side at the time of a vehicle collision.

  In the above-described technology, the slip regulating member is only placed on the vehicle floor by fixing the cushion pad covering it to the vehicle floor. Therefore, there is a possibility that the submarine phenomenon of the occupant cannot be effectively suppressed by moving the cushion control member together with the cushion pad to the front side of the vehicle due to the impact of the occupant on the slip control member at the time of the vehicle collision.

  Therefore, in order to restrict the movement of the slip restricting member toward the front side of the vehicle, for example, it is conceivable to provide a stopper mechanism that is provided on the mutually facing surfaces of the slip restricting member and the floor panel and engages with each other. The stopper mechanism is composed of a projection provided on the floor panel and projecting from the floor panel to the vehicle upper side (slip regulating member side), and a recess formed on the slip regulating member and fitted with the projection. The form to do is mentioned.

  However, in this embodiment, it has been found that the movement of the slip regulating member toward the vehicle front side may not be effectively regulated. This is because when the vehicle collides, the floor panel is greatly deformed to the vehicle lower side, so that the fitting between the protruding portion and the recessed portion may be released. As a result, the slip regulation member moves together with the cushion pad toward the vehicle front side. The deformation of the floor panel is caused by the fact that the impact on the slip regulating member of the occupant at the time of the vehicle collision is concentrated on the place where the projected portion of the floor panel is provided via the slip regulating member due to the provision of the projecting portion. Conceivable.

  The present invention has been made in view of the above circumstances, and one of its purposes is to provide a vehicle rear seat structure that can effectively suppress an occupant from sliding on the vehicle front side on the rear seat cushion at the time of a vehicle collision. It is to provide.

  A rear seat structure for a vehicle according to an aspect of the present invention includes a cushion pad for a rear seat cushion of the vehicle, a slip regulating member, a floor panel, and a stopper mechanism. The slip restricting member is provided in the cushion pad and restricts the occupant from being slid to the front side of the vehicle on the rear seat cushion by being stopped by the cushion pad when the vehicle collides. A slip regulating member is placed on the floor panel. A stopper mechanism is provided in the mutually opposing surface of a slip control member and a floor panel, and controls the movement to the vehicle front side of a slip control member by fitting mutually. The floor panel includes a floor plane portion that supports the vehicle rear side of the slip regulating member, a floor inclined surface portion that is provided on the vehicle front side relative to the floor plane portion, and that is inclined downward toward the front of the vehicle, and the floor plane portion and the floor inclined surface portion. And a ridge line portion connecting the two. The stopper mechanism is provided on the floor panel so as to overlap the ridge line portion, and has a protruding portion that protrudes toward the vehicle upper side, and a concave portion that is formed on the slip regulating member and into which the protruding portion is fitted.

  According to the vehicle rear seat structure described above, it is possible to effectively suppress the occupant from sliding on the rear seat cushion toward the vehicle front side when the vehicle collides. The ridge line part has higher rigidity than the floor plane part. In addition, since the ridge line part is adjacent to the floor inclined surface part, even if the impact to the occupant's slip restricting member at the time of the collision of the vehicle acts on the protruding part overlapping the ridge line part via the slip restricting member, The impact can be received at the floor inclined surface. Therefore, compared with the above-mentioned form which provides a protrusion part in a floor plane part, the location which provided the protrusion part of the floor panel cannot change easily to the vehicle downward side. Therefore, the fitting state between the protrusion and the recess can be maintained without the fitting between the protrusion and the recess, and the movement of the slip restricting member toward the vehicle front side can be restricted.

1 is a partial cross-sectional view illustrating an outline of a rear seat structure of a vehicle according to a first embodiment.

  Embodiment 1 of a vehicle rear seat structure according to the present invention will be described below with reference to FIG. FIG. 1 is a view showing a rear seat structure (left side of a vehicle) of an automobile, and shows a state at the time of a collision. The black arrows in FIG. 1 indicate the impact (direction of displacement of the occupant 100) of the occupant 100 (in this case, a dummy) on the slip regulating member 32 via the cushion pad 31 at the time of collision.

Embodiment 1
[Vehicle rear seat structure]
The vehicle rear seat structure 1 </ b> A according to the first embodiment is mounted on the cushion pad 31 of the rear seat cushion 30 in the rear seat 20 and the cushion pad 31, and the occupant 100 slides on the rear seat cushion 30 toward the vehicle front side when the vehicle collides. And a slip restricting member 32 that suppresses the above. The slip regulating member 32 is placed on the floor panel 10. The main feature of the rear seat structure 1A of the vehicle is that it is provided at a specific location on the opposing surfaces of the slip regulating member 32 and the floor panel 10 and is fitted to each other so that the slip regulating member 32 faces the vehicle front side. It is in the point provided with the specific stopper mechanism 50 which controls a movement. The vehicle collision mainly includes a full-lap frontal collision (hereinafter, sometimes referred to as a front collision). That is, the movement toward the front side of the vehicle is a movement in the straight traveling direction. Details will be described below.

[Floor panel]
A rear seat cushion 30 is placed on the floor panel 10. The floor panel 10 is made of, for example, a steel plate formed into a predetermined shape. The floor panel 10 includes a floor plane portion 11, a floor inclined surface portion 12, and a ridge line portion 13 that connects the floor plane portion 11 and the floor inclined surface portion 12. The floor flat surface portion 11, the floor inclined surface portion 12, and the ridge line portion 13 are formed in series. Here, a part of a protruding part 51 constituting a stopper mechanism 50 described later is fixed to each of the floor flat surface part 11 and the floor inclined surface part 12, and the remaining part of the protruding part 51 overlaps with the ridge line part 13. doing.

  The floor flat portion 11 supports the vehicle rear side of the rear seat cushion 30, specifically, the vehicle rear side of the slip regulating member 32 and the vehicle rear side of the cushion pad 31. The floor plane part 11 is formed in a substantially horizontal shape. On the floor plane portion 11, the butt portion of the occupant 100 is disposed via the rear seat cushion 30 before the vehicle collision.

  The floor inclined surface portion 12 is provided on the vehicle front side of the floor plane portion 11 with the ridge line portion 13 interposed therebetween, and is inclined downward in the front of the vehicle. The floor inclined surface portion 12 is in contact with the vehicle front side of the slip regulating member 32. The inclination angle of the floor inclined surface portion 12 is preferably as much as possible along the displacement direction (direction in which the load acts) of the occupant 100 at the time of the front collision shown by the black arrow in FIG. If it does so, since it is easy to receive the impact to the floor panel 10 via the slip control member 32 of the passenger | crew 100 at the time of a front collision by the floor inclined surface part 12, the deformation | transformation to the vehicle downward side of the floor panel 10 by the impact is suppressed. It is easy. In particular, the floor inclined surface portion 12 is adjacent to the ridgeline portion 13 where the impacts are concentrated and easily acted by the protruding portions 51 being overlapped. It is easy to effectively suppress the deformation.

[rear seat]
The rear seat 20 includes a rear seat cushion 30 that serves as a seating surface of the occupant 100 to be seated, and a rear seat back 40 that supports the back of the occupant 100. The rear seat 20 can be fixed to the vehicle by fixing the seat cushion frame and the seat back frame (both not shown) forming the frame of the rear seat cushion 30 and the rear seat back 40 to the vehicle (here, the floor panel 10). The rear seat 20 is a fixed type that cannot slide the rear seat cushion 30 in the vehicle front-rear direction.

(Rear seat cushion)
The rear seat cushion 30 includes a cushion pad 31 and a slip regulating member 32.

<Cushion pad>
The cushion pad 31 constitutes a seating surface of the rear seat cushion 30 and suppresses transmission of vehicle vibration or the like to the occupant 100 to enhance the sitting comfort of the occupant 100. The cushion pad 31 is fixed to the seat cushion frame, and is fixed to the floor panel 10 via the seat cushion frame. The cushion pad 31 covers the entire area other than the lower surface of the slip regulating member 32. A seat cover (not shown) that covers the surface of the cushion pad 31 is provided. The occupant 100 contacts the cushion pad 31 via the seat cover. The material of the cushion pad 31 can be appropriately selected according to the sitting comfort and durability of the occupant 100, and examples thereof include a material having lower rigidity than the slip regulating member 32, such as urethane foam.

<Slip control member>
The slip restricting member 32 restricts the occupant 100 from sliding on the rear seat cushion 30 to the front side of the vehicle by hitting and stopping the occupant 100 via the cushion pad 31 at the time of a vehicle collision. When the vehicle collides, the occupant 100 sinks to the lower front side of the cushion pad 31 as indicated by the black arrow in FIG. At that time, the butt portion of the occupant 100 is abutted against the slip regulating member 32 via the cushion pad 31. Thus, in a state where the occupant 100 is wearing the seat belt 200 (for example, a continuous three-point type), it is possible to suppress sliding movement (so-called submarine phenomenon) under the seat belt 200 (lap belt crossing around the abdomen). .

  The slip regulating member 32 may be made of a material or structure having higher rigidity than the cushion pad 31, for example, a hard cushion material such as foamed polypropylene or foamed polystyrene, or a metal material having a honeycomb structure. Examples of the metal include aluminum and its alloys. These metals are suitable in that they are lightweight while ensuring high rigidity.

  It is preferable that the slip regulating member 32 and the cushion pad 31 are fixed so as not to be separated from each other. The slip regulation member 32 and the cushion pad 31 may be fixed by, for example, press-fitting the slip regulation member 32 into the cushion pad 31, or may be performed by adhesion or fastening. Alternatively, the slip restriction member 32 may be placed on the seat cushion frame, and the slip restriction member 32 may be sandwiched between the cushion pad 31 and the seat cushion frame. A wire is spanned inside the frame of the seat cushion frame, and the slip regulating member 32 is placed on the spanned wire so that the slip regulating member 32 is sandwiched between the wire and the cushion pad 31. . The slip regulating member 32 is not fixed to the floor panel 10.

  The lower surface of the slip regulating member 32 is not covered with the cushion pad 31 as described above, and is in contact with the floor panel 10 by fixing the cushion pad 31 to the floor panel 10. On the lower surface of the slip regulating member 32, a recess 52 into which a protrusion 51 described later is fitted is formed. The recess 52 constitutes the stopper mechanism 50 together with the protrusion 51. The stopper mechanism 50 having the protrusions 51 and the recesses 52 will be described in detail later. By fitting the recesses 52 and the protrusions 51, the movement of the slip restriction member 32 to the front side of the vehicle at the time of the front collision is restricted. it can.

  The arrangement position of the slip regulating member 32 in the cushion pad 31 may be the vehicle front side of the rear seat cushion 30. If it does so, when the passenger | crew 100 sinks into the cushion pad 31 at the time of a collision as shown by the black arrow of FIG. This is because the slip regulating member 32 usually has at least a portion located on the front side of the butt portion of the occupant 100 when the occupant 100 sits on the rear seat cushion 30. Here, the slip regulating member 32 is disposed from the position substantially corresponding to the butt portion of the occupant 100 in the rear seat cushion 30 of the floor plane portion 11 to the vehicle front side from the floor inclined surface portion 12 beyond the ridge line portion 13. Yes.

  The shape of the slip regulating member 32 is preferably a shape having an upward inclined surface from the rear of the vehicle to the front on the upper surface side. By having the inclined surface on the upper surface side, when the occupant 100 sinks when the vehicle collides, it is easy to receive the occupant 100, so that the occupant 100 can be easily stopped. The shape of the slip restricting member 32 is a shape having a surface along the floor inclined surface portion 12 from the floor flat surface portion 11 toward the lower surface side from the rear of the vehicle to the front. Here, the slip regulation member 32 is configured by a triangular prism-shaped block body whose height increases from the vehicle rear side toward the vehicle front side.

[Stopper mechanism]
The stopper mechanism 50 restricts the movement of the slip restriction member 32 toward the vehicle front side. This restriction is performed by fitting the protrusion 51 and the recess 52 provided on the opposing surfaces of the floor panel 10 and the slip restriction member 32 to each other.

(Protruding part)
The protrusion 51 protrudes from the floor panel 10 side to the vehicle upper side and fits into the recess 52. Since the protruding portion 51 protrudes upward in the vehicle and is orthogonal to the moving direction of the slip restricting member 32 toward the vehicle front side, it can effectively resist the above movement of the slip restricting member 32. It is easy to restrict the movement of the slip regulating member 32. The above-described movement restriction of the slip restriction member 32 is more easily performed as the ratio of the width of the protruding portion 51 to the width of the slip restriction member 32 (length along the vehicle width direction) is larger. The number of the protrusions 51 with respect to the slip restriction member 32 may be singular or plural. In the case of a plurality, adjacent protrusions 51 are provided intermittently with a predetermined interval. The specific width (the total width in the case of a plurality of protrusions) of the protrusion 51 is preferably more than half of the total width of the slip regulating member 32, and more preferably substantially the full width. When providing the some protrusion part 51, one can be comprised with a comparatively short short material. It is preferable that the arrangement part of the protrusion part 51 in the vehicle width direction is a region including the center of the slip restriction member 32 in the width direction. Here, the protruding portion 51 is formed of a single long material that is provided in a region including the center in the width direction of the slip regulating member 32 and has a length extending over most of the width of the slip regulating member 32. The protruding portion 51 may be formed of a single long material having a length that extends over the entire width of the rear seat cushion 30. In this case, one protrusion 51 is provided for the plurality of slip regulating members 32 arranged at predetermined intervals in the width direction of the rear seat cushion 30. The protruding portion 51 may be configured by a member different from the floor panel 10. Examples of the material of the protruding portion 51 include a metal having high rigidity, such as steel. Here, the protrusion 51 is formed by appropriately bending a steel plate.

  The protrusion 51 is provided at an insertion portion 510 at least a part of which is inserted into the recess 52, and a front fixing portion 512 that is provided on each of the vehicle front side and the vehicle rear side of the insertion portion 510 and is fixed to the floor panel 10. And a rear fixing portion 513. These insertion portion 510 and both fixing portions 512 and 513 are formed in series. Here, the cross-sectional shape of the projecting portion 51 taken along the vehicle front-rear direction is a hat shape. That is, the cross-sectional shape of the insertion portion 510 is formed in an inverted U shape that opens on the vehicle lower side. The cross-sectional shape of the insertion portion 510 is preferably a shape having an orthogonal surface orthogonal to the vehicle front-rear direction (floor plane portion 11) on the vehicle rear side of the insertion portion 510. If it does so, since it is easy to enlarge resistance with respect to the movement of the slip control member 32 to the vehicle front side, it is easy to control the movement of the slip control member 32 to the vehicle front side. The front fixing portion 512 and the rear fixing portion 513 are respectively formed in a flange shape extending from the opening edge of the insertion portion 510 on the vehicle front side and the vehicle rear side to the vehicle front side and the vehicle rear side, respectively.

  An arrangement location of the protruding portion 51 in the vehicle front-rear direction may be a position overlapping the ridge line portion 13 of the floor panel 10. The protruding portion 51 overlaps the ridge line portion 13 when (1) the protruding portion 51 straddles at least a part of the ridge line portion 13 and (2) the protruding portion 51 does not straddle the ridge line portion 13. The case where at least one part is being fixed to the ridgeline part 13 is included.

(1) When the projecting part 51 straddles at least a part of the ridge line part 13 At least a part of the insertion part 510 is disposed above the ridge line part 13, and the front fixing part 512 is at least one of the ridge line part 13 and the floor inclined surface part 12. It means that the rear fixing part 513 is fixed to at least a part of the ridge line part 13 and the floor plane part 11. As a typical form, the insertion portion 510 straddles the entire area of the ridge line portion 13 in the vehicle front-rear direction, the front fixing portion 512 is fixed to the floor inclined surface portion 12, and the rear fixing portion 513 is fixed to the floor flat surface portion 11. The form etc. are mentioned.

(2) When the protruding portion 51 does not straddle the ridge line portion 13 and at least a part of the protruding portion 51 is fixed to the ridge line portion 13 The insertion portion 510 is not disposed above the ridge line portion 13 and the floor inclined surface portion 12 or the floor It is arranged adjacent to the ridge line part 13 above any one of the plane parts 11 and means that one of the front fixing part 512 and the rear fixing part 513 is fixed to at least the ridge line part 13. As a representative form, the insertion portion 510 is disposed adjacent to the ridge line portion 13 of the floor inclined surface portion 12, the front fixing portion 512 is fixed to the floor inclined surface portion 12, and the rear fixing portion 513 is fixed to the ridge line portion 13. The insertion portion 510 is disposed adjacent to the ridge line portion 13 in the floor plane portion 11, the front fixing portion 512 is fixed to the ridge line portion 13, and the rear fixing portion 513 is fixed to the floor plane portion 11. The form etc. are mentioned.

  Here, the insertion portion 510 straddles the entire area of the ridge line portion 13 in the vehicle front-rear direction, the front fixing portion 512 is fixed to the floor inclined surface portion 12, and the rear fixing portion 513 is fixed to the floor flat surface portion 11.

  The fixing of the protrusion 51 to the floor panel 10 is not particularly limited as long as both can be firmly fixed. For example, a fastening member such as a bolt can be used, but it is preferably performed by welding. If it does so, since it is easy to fix the protrusion part 51 to the floor panel 10 firmly, peeling from the floor panel 10 of the protrusion part 51 by the impact at the time of a front collision is easy to be suppressed, and fitting of the protrusion part 51 and the recessed part 52 is carried out. Easy to maintain state. Here, the fixing of the front fixing portion 512 to the floor inclined surface portion 12 and the fixing of the rear fixing portion 513 to the floor flat surface portion 11 are performed by welding.

(Concave)
The protrusion 51 is fitted into the recess 52. The recess 52 is formed on the lower surface of the slip regulating member 32 as described above. The outline shape of the recessed part 52 is made into the shape along the external shape of the insertion part 510 of the protrusion part 51.

[Function and effect]
In the vehicle rear seat structure 1A according to the first embodiment described above, even if the impact acting on the slip regulating member 32 via the cushion pad 31 of the occupant 100 is concentrated on the protruding portion 51 overlapping the ridge line portion 13 during the front collision. Further, it is possible to suppress the vicinity of the ridge line portion 13 from being deformed to the vehicle lower side. This is because the rigidity of the ridge portion 13 over which the insertion portion 510 of the protruding portion 51 fitted with the concave portion 52 of the slip regulating member 32 straddles is higher than that of the floor plane portion 11. In particular, the floor inclined surface portion 12 can easily receive the impact because the inclination angle of the floor inclined surface portion 12 to which the front fixing portion 512 of the protruding portion 51 is fixed is along the displacement direction of the occupant 100 at the time of the front collision. Therefore, the fitting state between the protrusion 51 and the recess 52 can be maintained without being disengaged, and the movement of the slip restricting member 32 toward the front side of the vehicle can be effectively restricted. Therefore, it is possible to effectively suppress the occupant 100 from sliding on the rear seat cushion 30 toward the vehicle front side.

  The present invention is not limited to these exemplifications, but is defined by the scope of the claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of the claims. For example, the collision of the vehicle is not limited to a frontal collision, and even when an occupant moves in an oblique direction inclined with respect to the straight traveling direction of the vehicle at the time of an offset frontal collision, the slip regulating member moves toward the vehicle front side and the vehicle front diagonal direction. Can be expected to be regulated. Further, it can be expected that the movement of the slip restricting member to the front side of the vehicle can be restricted even when the occupant moves to the rear side at the time of a rear collision and moves to the front side of the vehicle due to the reaction that collides with the rear seat back.

  The vehicle rear seat structure according to the present invention can be suitably used for an automobile in which it is desired to effectively suppress the movement of the occupant toward the vehicle front side in the event of a collision.

DESCRIPTION OF SYMBOLS 1A Vehicle rear seat structure 10 Floor panel 11 Floor plane part 12 Floor inclined surface part 13 Edge line part 20 Rear seat 30 Rear seat cushion 31 Cushion pad 32 Slip control member 40 Rear seat back 50 Stopper mechanism 51 Protrusion part 510 Insertion part 512 Front fixing part 513 Back fixing Part 52 Concave part 100 Crew (dummy)
200 seat belt

Claims (1)

A cushion pad for the rear seat cushion of the vehicle;
The cushion pad is made of a material or structure having higher rigidity than the cushion pad, and is mounted on the cushion pad. When the vehicle collides, an occupant is stopped by the cushion pad and slides on the rear seat cushion toward the front side of the vehicle. A slip regulating member that regulates,
A floor panel on which the slip regulating member is placed;
A stopper mechanism that is provided on the mutually opposing surfaces of the slip regulating member and the floor panel and that regulates the movement of the slip regulating member to the vehicle front side by being fitted to each other;
The floor panel is
A floor plane portion supporting the vehicle rear side of the slip regulating member;
A floor inclined surface portion that is provided on the vehicle front side of the floor flat portion and inclines downward in the front of the vehicle;
Having a ridge line part connecting the floor plane part and the floor inclined surface part,
The stopper mechanism is
Protruding portions that are provided on the floor panel so as to overlap the ridge line portions, and protrude to the vehicle upper side,
A vehicle rear seat structure having a recess formed in the slip regulating member and into which the protrusion is fitted.

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