JP6347244B2 - Vehicle seat structure - Google Patents

Description

  The present invention relates to a vehicle seat structure arranged such that a rear portion of a seat cushion of a seat provided in a vehicle is positioned above a dug portion formed on a vehicle floor.

  A vehicle in which a dug portion such as a spare tire pan for accommodating a spare tire is provided on a rear floor such as an SUV (Sport Utility Vehicle) or a minivan is generally popular. Among them, the vehicle disclosed in Patent Document 1 is used. As exemplified by the seat structure, there is known a seat cushion rear portion located above the dug portion.

  In the vehicle seat device of Patent Document 1, a tire accommodating recess 17 that is recessed downward is formed on the floor of the cargo compartment 5, and a spare tire 18 can be accommodated in the recess 17. Further, in the vehicle seat device of Patent Document 1, the cushion frame 21 that supports the seat cushion 3 of the rear seat, the rear portion of which is located above the concave portion 17, extends in the front-rear direction on both sides of the seat cushion 3 in the vehicle width direction. It is arranged so as to extend, and the cushion frame 21 ensures the support rigidity of the rear part of the seat cushion 3 located above the recess 17.

  By the way, in sedan and hatchback vehicles, in order to reduce the weight of the vehicle and save space in the vehicle, a seat of the type installed on the vehicle floor is provided without a cushion frame that supports the seat cushion at the lower part of the seat cushion. The ones provided are also known.

  However, in the layout, in the seat in which the rear portion of the cushion frame is arranged so as to overhang the digging portion, it is difficult to ensure the support rigidity of the rear portion of the seat cushion when the cushion frame is not provided. If a reinforcing member that reinforces the rear portion of the seat cushion is disposed in the dug portion in order to secure the support rigidity of the rear portion of the seat cushion, it is not possible to secure a space in which the baggage can be properly accommodated in the dug portion. There will be a problem.

  The above-described vehicle seat device of Patent Document 1 discloses a general seat cushion movable structure having a cushion frame, and has a layout in which the rear portion of the seat cushion overhangs the dug portion in terms of layout. However, there is room for further study in order to secure the support rigidity of the rear part of the seat cushion in a seat that does not have a cushion frame in order to reduce the weight and save space in the car by making the seat cushion non-movable. there were.

JP 2011-42368 A

  Therefore, according to the present invention, even if the seat is arranged so that the rear portion of the seat cushion overhangs the recessed portion such as the spare tire pan, a reinforcing member such as a seat cushion pan or a seat cushion frame is not disposed. An object is to secure the support rigidity of the rear portion of the seat cushion.

The present invention is a sheet cushion sheet frameless structure of a seat provided in a vehicle, a seat structure for a vehicle attached to the vehicle floor without using the seat frame, the front portion of the seat cushion the vehicle floor At the same time, the rear part is attached to the vehicle floor via a support member. The support member is attached to the vehicle floor at both ends thereof, and is positioned above the dug portion formed on the vehicle floor. has been no floating portion attached to the rear portion of the seat cushion is disposed so as to be positioned above the portion narrowing drilling the, the the floating portion, the said extending toward the seat cushion rear lower sheet support bracket in contact with the rear bottom surface of the cushion is provided in a cantilever manner, the occupant is wearing the seat cushion When the is one in which the load from the seat cushion rear lower surface is formed so that the support bracket can accept.

  According to the above-described configuration, the reinforcing member such as the seat cushion pan or the seat cushion frame is disposed even in the layout where the rear portion of the seat cushion is overlaid on the recessed portion such as the spare tire pan. In addition, the support rigidity of the rear portion of the seat cushion can be ensured.

  As an aspect of the present invention, the support bracket is extended to the lower surface of the support member and then coupled.

  According to the said structure, when a passenger | crew sits on a seat cushion, the support rigidity with respect to the moment which acts with the load from a seat cushion rear part can be improved.

  Further, as an aspect of the present invention, the support bracket extends to the rear of the support member, and is then folded and joined to the support member.

  According to the above configuration, since the coupling strength of the support bracket to the support member is improved, the support rigidity of the rear portion of the seat cushion can be improved.

  And according to the said structure, the linear body and cover body which fix the load accommodated in the dug part, the spare tire, and the tire after replacement | exchange to the back extension part from the said support member of the said support bracket. It is possible to engage the engaging portion provided in the fixing means formed by, for example. In other words, the rearward extending portion can be used as an engaged means for engaging the engaging portion provided in the fixing means with the support member. Therefore, such a means to be engaged can be used as a support bracket without providing the support member separately on the support member.

  Further, as an aspect of the present invention, the lower portion of the seat cushion has a high-rigidity portion configured to be higher in rigidity than the upper portion thereof, and the support bracket is at least a part of the high-rigidity portion when the occupant is seated. It is arranged at the position where the load is transmitted from.

  According to the above configuration, the high-rigidity portion can receive a load when the occupant is seated, and the support bracket is disposed at a position where the load is transmitted from at least a part of the high-rigidity portion when the occupant is seated. Thus, it is possible to reliably receive the load when the occupant is seated by the support bracket.

  According to the present invention, a reinforcing member such as a seat cushion pan or a seat cushion frame is disposed even if the seat has a layout in which the rear portion of the seat cushion is overhanging on a recessed portion such as a spare tire pan. In addition, the support rigidity of the rear portion of the seat cushion can be ensured.

The perspective view which looked at the principal part of the vehicles of this example from the left diagonal front side upper part inside the car Longitudinal sectional view corresponding to the middle part in the vehicle width direction of the right rear seat of the main part of the vehicle of this embodiment The perspective view which looked at the principal part of the sheet | seat structure of a present Example from the diagonally left rear lower part 1 is an enlarged view of a main portion of the perspective cross section taken along the line AA in FIG. 1 with the seat cushion removed. The principal part enlarged view of FIG. 2 which shows the support structure of a seat cushion A perspective sectional view showing the support structure of the seat cushion shown by sliding the seat cushion upward The perspective view which shows the vehicle body rear part containing the seat structure of a present Example Longitudinal sectional view showing how the spare tire and the tire after replacement are housed in the tire housing recess

An embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view of a main part of the seat structure of the present embodiment provided in the last row of the vehicle as viewed from the upper left front side of the vehicle. FIG. 2 is an orthogonal cross-sectional view in the vehicle width direction corresponding to the vehicle width direction intermediate portion of the right rear seat of the seat structure of the present embodiment corresponding to the cross section taken along line BB in FIG. FIG. 3 is a perspective view of the seat structure of the present embodiment as viewed from the lower left rear side, and is an enlarged view of a main part in which the upper part of the seat back is omitted. FIG. 4 is an enlarged view of a main part of the perspective cross-sectional view taken along line AA in FIG. 1 with the seat cushion removed. FIG. 5 is an enlarged view of a main part of FIG. 2 showing a seat cushion support structure via a support bracket of the support member. FIG. 6 is a structural explanatory diagram of the seat structure in which the seat cushion is slid upward in the enlarged view of the main portion of the perspective cross section seen from the upper left front side with respect to the section cut along the line CC in FIG. is there. FIG. 7 is a perspective view showing the rear portion of the vehicle body including the seat structure of the present embodiment. FIG. 8 is an orthogonal cross-section in the vehicle width direction of a portion corresponding to the center portion of the spare tire in the seat structure of the present embodiment, and FIG. 8 (a) shows the accommodation state of the spare tire in the tire accommodation recess, FIG. 8B shows the accommodation state of the tire after replacement in the tire accommodation recess.
1 shows only the frame structure of the rear seat, and the frame structure of the seat cushion and the seat back is omitted in FIGS. 2 and 4 to 6.

  In the following embodiments, in the drawings, arrow F indicates the front of the vehicle, arrow LE indicates the left in the vehicle width direction, arrow RI indicates the right in the vehicle width direction, and arrow U indicates the upper side of the vehicle.

  As shown in FIGS. 1 and 2, a rear floor panel 2 (a part of the floor panel) that forms the floor surface of the vehicle body is provided at the rear portion of the vehicle 1 of the present embodiment. The rear floor panel 2 is provided with a tire receiving recess 3 that is formed integrally or integrally in a concave shape at the rear and in the center in the vehicle width direction.

  The tire housing recess 3 is formed with a diameter slightly larger than the outer diameter of the spare tire 100 so that the spare tire 100 (see FIG. 2) is placed substantially horizontally on the bottom surface. It is formed in a concave shape deeper than the thickness. As shown in FIG. 8 (a), the spare tire 100 placed on the bottom surface of the tire housing recess 3 is inserted into an opening 101a at the center of the wheel portion 101 of the spare tire 100, as shown in FIG. A boss 81 having a screw hole 81 a screwed with the tip of the thumbscrew 82 is provided, and the spare tire 100 is fixed to the boss 81 by the thumbscrew 82.

  As shown in FIG. 2, a rear end panel 85 is erected and fixed to the rear end portion of the rear floor panel 2 described above. A rear end member 86 is joined to the upper front side of the rear end panel 85, and the rear end member 86. A rear end closed section 87 extending in the vehicle width direction is formed between the rear end panel 85 and the rear end panel 85. 2 is a trunk board, 89 is a spare tire cover, and the trunk board 88 and the spare tire cover 89 are not shown except for FIGS.

  As shown in FIGS. 1, 4 and 6, a rear side frame upper 4a formed in a cross-sectional hat shape is joined to the upper side portion of the rear floor panel 2 described above, and a lower side portion of the rear floor panel 2 is joined to the lower side portion of the rear floor panel 2. A rear side frame lower (not shown) formed in a hat shape in cross section is joined, and the vehicle 1 is arranged in the front-rear direction between the rear floor panel 2 and the rear side frame upper 4a and between the rear floor panel 2 and the rear side frame lower. A closed cross section extending in a straight line is formed.

  As shown in FIGS. 1, 2, 4 and 6, a rear cross member 5 (so-called No. 4 cross member) is provided on the front side of the tire receiving recess 3 and on the upper side of the rear floor panel 2, and the rear An upper rear cross member 5 a is provided above the rear floor panel 2 of the cross member 5, and a lower rear cross member 5 b is provided below the rear floor panel 2 of the rear cross member 5, and these upper rear cross members Both 5a and the lower rear cross member 5b (see FIG. 2) extend in the vehicle width direction and are formed in a hat shape in sectional view. A closed cross section extending in the vehicle width direction is formed between the rear floor panel 2 and the upper rear cross member 5a and between the rear floor panel 2 and the lower rear cross member 5b (see the same figure). . The upper rear cross member 5a supports the front end portion of the rear seat 10 arranged in the last row, which will be described later.

As shown in FIGS. 1, 3, 5, and 7, the last row (in the present embodiment, the third row) of the multiple rows of sheets arranged in front and back can be independently lying down in parallel on the left and right. A pair of left and right rear seats 10R, 10L comprising a rear seat 10R for the right rear seat occupant (referred to as "right rear seat 10R") and a rear seat 10L for the left rear seat occupant (referred to as "left rear seat 10L"). It has.
Note that the right rear seat 10R and the left rear seat 10L have the same configuration as each other, and therefore each will be described as the rear seat 10 except for the case where they are distinguished from each other.

  The rear seat 10 mainly includes a seat cushion 20 that forms a seating surface of the rear seat occupant, and a seat back 30 that forms a backrest surface of the rear seat occupant including the headrest 35, as shown in FIGS. A reclining device 60 (see FIG. 1) and a seat support structure 40 for supporting them are provided.

  As shown in FIG. 1, the seat back 30 includes a substantially rectangular seat back frame 31 made of a metal pipe material, and a pair of left and right rotational supports attached to lower portions of the left and right ends of the seat back frame 31. A bracket 32 and a cushion material (not shown) for covering the whole are provided.

  As shown in FIGS. 2, 3, and 5 to 7, the seat cushion 20 is integrally formed in a substantially rectangular shape in plan view, and a cushion spring (not shown) is provided on the outer periphery and the seat cushion 20 is seated. A low-rigidity portion 21 excellent in cushioning properties (flexibility) with which the heel portion abuts, and a high-rigidity made of urethane foam disposed below the low-rigidity portion 21 and configured to have higher rigidity than the low-rigidity portion 21 And a cushion foam portion 22 as a portion, and these surfaces are covered with a cushion cover (not shown).

  2, 5, and 6, reference numeral 20 a denotes a rear protruding piece that protrudes rearward from the rear end portion of the seat cushion 20, and the rear protruding piece 20 a includes the rear portion of the seat cushion 20 and the seat. The support member 41 is disposed above the support member 41 from the viewpoint of design so that the support member 41 is not visually recognized from between the lower portion of the back 30.

  As shown in FIGS. 1, 2, and 4, the front end portion of the seat cushion 20 is attached to the upper surface 5U of the upper rear cross member 5a by a front cushion attachment device 91. As shown in FIGS. 1 and 2, the front cushion mounting device 91 includes a striker 92 (see FIG. 3) that protrudes downward from an intermediate portion of the front end portion of the seat cushion 20 in the vehicle width direction, the striker 92, Correspondingly, the upper rear cross member 5a is configured by a latch 93 (resin clip) provided so that the striker 92 can be engaged. The latch 93 releases the engagement of the striker 92 by the latch 93. An operation unit 94 is attached.

That is, the front end portion of the seat cushion 20 is detachably attached to the upper rear cross member 5a via the front cushion mounting device 91. In other words, the front end portion of the seat cushion 20 is attached to the rear floor panel 2 via the upper rear cross member 5a.
The attachment of the rear portion of the seat cushion 20 to the vehicle body will be described later.

  Further, as shown in FIG. 1, the reclining device 60 described above is provided corresponding to each of the pair of left and right rear seats 10R, 10L at the lower rear end of the pair of left and right rear seats 10R, 10L and in the middle portion in the vehicle width direction. Yes. That is, the reclining device 60 is provided on both left and right outer sides of a rear end of an extending member 51 described later, and a rotation support bracket provided on the inner side in the vehicle width direction of the seat back 30 is provided on each of the reclining devices 60. There is provided a shaft support portion 60A that supports the shaft 32 around the vehicle width direction. In FIG. 1, only the shaft support 60A of the left rear seat 10L is illustrated.

  Although not shown, the reclining device 60 includes a mainspring spring that urges the seat back 30 to pivot forward (counterclockwise in the left side view of the vehicle) around the shaft support 60A, and the posture of the seat back 30. And a locking mechanism for locking. The locking mechanism includes a locked portion such as a ratchet and a locking claw that can be engaged and disengaged with the locked portion. The locking mechanism functions when the seat back 30 is in the standing posture and holds the seat back 30 in the standing posture.

  As shown in FIGS. 1 to 3, the seat support structure 40 includes a support member 41, a support bracket 7, an extending member 51, a vehicle width direction outer side support bracket 65, an upper connection bracket 42, and a lower connection bracket. 45 (see FIG. 3) and the like.

  As shown in FIGS. 1 to 7, the support member 41 has a vehicle width over the substantially entire length of the pair of left and right rear seats 10 </ b> R, 10 </ b> L at the lower rear end of the rear seat 10, that is, the rear end of the seat support structure 40. The metal square pipe extends in the direction (horizontal and straight), and both ends thereof are arranged in the vehicle width direction of the pair of left and right rear seats 10R and 10L, as shown in FIGS. It is attached to the rear side frame upper 4a by fastening bolts B1 (FIGS. 3 and 7) and nuts (not shown) via a vehicle width direction outer side support bracket 65 provided outside, and mainly supports the rear portion of the rear seat 10. .

Specifically, the outer support bracket 65 in the vehicle width direction is provided on the outer side in the vehicle width direction with respect to the support member mounting portion 65a for supporting the support member 41 from the outer side in the vehicle width direction. 30 is provided with a shaft support portion 65b that supports the rotation support bracket 32 provided on the outer side in the vehicle width direction around the vehicle width direction (see FIGS. 1, 3, 4, 6, and 7).
That is, the support member 41 is attached to the rear floor panel 2 via the vehicle width direction outer side support bracket 65 and the rear side frame upper 4a.

  As shown in FIGS. 1 to 5 and 7, the support member 41 is positioned above the tire accommodating recess 3 formed in the rear floor panel 2 and is horizontally mounted so as to straddle the tire accommodating recess 3 in the vehicle width direction. Has been.

  Therefore, at least the middle part between the vehicle width direction outer side support brackets 65, 65 on both sides of the support member 41 in the vehicle width direction is located above the tire accommodating recess 3 and is attached to the vehicle bottom surface such as the rear floor panel 2. It has a floating part 6 that is not possible.

  As shown in FIGS. 2, 3, and 5, the rear portion of the seat cushion 20 is supported by the support member 41 via the support bracket 7. Thereby, the rear part of the seat cushion 20 is arranged so as to overhang the tire accommodating recess 3 in terms of layout. Note that the upper connection bracket 42, the lower connection bracket 45, and the reclining device 60 are also provided in the floating portion 6 of the support member 41.

  The support bracket 7 is attached to the support member 41 and is formed into a shape as shown in FIGS. 1 and 3 to 7 by bending and deforming a metal wire so as to support the rear portion of the seat cushion 20. . Specifically, the support bracket 7 has an inner end piece 71 in the vehicle width direction on the inner side in the vehicle width direction, and an outer end piece 72 in the vehicle width direction on the outer side in the vehicle width direction. From the front ends of the vehicle width direction inner side end piece 71 and the vehicle width direction outer side end piece 72 toward the rear part of the seat cushion 20, that is, to be able to support the rear part of the seat cushion 20 diagonally forward and downward in parallel with each other and substantially the same length. It has a pair of front lower extension parts 73 and 73 which extend.

  Furthermore, it has the vehicle width direction connection part 75 which connects between the front ends (lower end) of a pair of front lower extension parts 73 and 73 via the concave bending part 74 in a vehicle width direction.

  The support bracket 7 has an intersection portion between the inner end piece 71 in the vehicle width direction, the outer end piece 72 in the vehicle width direction, the pair of front lower extending portions 73 and 73, the concave bent portion 74, and the connecting portion 75 in the vehicle width direction. Not integrally formed in a continuous line.

  The inner end piece 71 in the vehicle width direction has a length in the vertical direction of the front surface 41F and extends upward at a position corresponding to the front surface 41F of the support member 41 (FIGS. 1, 2, and 4 to 6). reference).

  Furthermore, as shown in FIG. 3, the vehicle width direction outer side end piece 72 has a lower surface mounting portion 721, a rearward extending portion 722, and a folded lower surface mounting portion 723, and the pair of front lower extending portions 73 described above. , 73 are integrally formed so that the respective ends are connected in a line from the rear end of the front lower extension 73 on the outer side in the vehicle width direction toward the outer end in the vehicle width direction.

  Specifically, the lower surface attachment portion 721 extends rearward from the rear end of the front lower extension portion 73 on the outer side in the vehicle width direction on the lower surface 41D of the support member 41, and the rear extension portion 722 is the rear end of the lower surface attachment portion 721. The support member 41 extends from the rear to the front of the vehicle and is formed in a substantially U shape. The lower surface attaching portion 723 extends forward from the outer end portion of the rear extending portion 722 in the vehicle width direction on the lower surface 41 </ b> D of the support member 41. That is, the lower surface mounting portion 721 and the folded lower surface mounting portion 723 described above have a length in the front-rear direction of the lower surface 41D at a position corresponding to the lower surface 41D of the support member 41, and extend in the front-rear direction in parallel to each other. Yes.

  The pair of front lower extending portions 73 and 73 have a length capable of supporting the cushion foam portion 22 from the low rigidity portion 21 to the cushion foam portion 22 at the rear portion of the seat cushion 20 and in the front lower direction. It has extended (refer FIGS. 1-6).

  The concave bent portion 74 is formed in a concave shape extending in the rear upward direction from the cushion foam portion 22 to the low-rigidity portion 21 between the pair of front lower extending portions 73 and 73 at a substantially intermediate portion in the vehicle width direction. (See FIGS. 1, 3, 4, and 6).

  In the support bracket 7 described above, the inner end piece 71 in the vehicle width direction is joined to the front surface 41F of the support member 41 by welding, and the lower surface mounting portion 721 and the folded lower surface mounting portion 723 of the outer end piece 72 in the vehicle width direction are L-shaped brackets. 49, and is joined to the lower surface 41D of the support member 41 by welding. The L-shaped bracket 49 is a reinforcing member that is joined to the rear surface and the lower surface 41D of the support member 41 and reinforces the support member 41.

  In this state, the support bracket 7 is configured on the same plane so that the pair of front lower extending portions 73, 73, the vehicle width direction connecting portion 75, and the concave bent portion 74 can support the rear portion of the seat cushion 20, It is arranged at a position where a load is transmitted from at least the rear portion of the cushion foam portion 22 when the occupant is seated.

  With the above-described configuration, the support bracket 7 is joined to the left and right sides of the intermediate portion in the vehicle width direction of the floating portion 6 of the support member 41 so as to correspond to the pair of left and right rear seats 10R and 10L. When the seat is seated, the seat cushion 20 is extended toward the rear portion so as to receive a load from the rear portion.

  As shown in FIGS. 1, 3, and 4, the extended member 51 is attached to the intermediate portion in the vehicle width direction (the intermediate portion in the longitudinal direction of the support member 41) of the floating member 6 of the support member 41 at the rear end. A front flange portion 53 is attached to the upper rear cross member 5a so as to extend linearly from the intermediate portion toward the front of the vehicle and beyond the tire receiving recess 3 at the front end thereof. Thereby, the extending member 51 extends substantially horizontally in the front-rear direction at the lower part of the pair of left and right rear seats 10R, 10L and in the middle part in the vehicle width direction, and the T-shaped frame in plan view extending in the vehicle width direction. Is configured.

That is, the rear end lower portion of the extending member 51 is joined to an intermediate portion in the vehicle width direction of the floating portion 6 of the support member 41 extending in the vehicle width direction to form a joint S1 (see the same reference 1).
Further, as shown in FIG. 3, in the joint portion S <b> 1 between the extended member 51 and the support member 41, the support member 41 and the extended member 51 are configured to hold the members 41 and 51 from behind and below. The above-described lower connection bracket 45 having a substantially L shape in side view is attached.

  The extending member 51 has a substantially cross-sectional structure in the front-rear direction except for the front flange portion 53 provided at the front end thereof, and corresponds to the left and right side walls of the rear portion of the extending member 51 and the left and right sides. The reclining device support bracket 61 (see FIG. 1) provided inside the reclining device 60 in the vehicle width direction is fastened with bolts and nuts (not shown).

  Then, as shown in FIG. 1, an upper connecting bracket 42 is attached to the upper portion of the rear portion of the extending member 51 so as to connect the joint portion S1 with the support member 41 as described above in the front-rear direction (see FIG. 1). ), The upper connecting bracket 42 supports the reclining devices 60 on the left and right sides from the inner side in the vehicle width direction.

  As shown in FIGS. 1, 3 and 4, the front flange portion 53 provided at the front end portion of the extending member 51 has a cross member upper surface contact surface portion 53U that contacts the upper surface 5U of the upper rear cross member 5a. And a cross member front surface contact surface portion 53F that is bent downward at a substantially right angle from the front end of the cross member upper surface contact surface portion 53U and extends downward, and contacts the front surface 5F of the upper rear cross member 5a.

  The cross member upper surface contact surface portion 53U and the upper surface 5U of the upper rear cross member 5a, and the cross member front surface contact surface portion 53F and the front surface 5F of the upper rear cross member 5a are joined by welding, respectively. The contact surface portion 53F and the front surface 5F of the upper rear cross member 5a are fastened by bolts B2 and nuts (not shown) (see FIGS. 1, 3, and 4).

  As shown in FIGS. 1 to 6, the seat structure 20 of the rear seat 10 provided in the vehicle 1 is configured so that the front portion thereof is an upper rear cross member 5a serving as a vehicle floor. The support member 41 is attached to a rear side frame upper 4a as a vehicle floor at both ends thereof, and is positioned above the tire accommodating recess 3 as the tire accommodating recess 3 formed in the rear floor panel 2 and the rear floor panel. 2, the rear portion of the seat cushion 20 is disposed so as to be positioned above the tire accommodating recess 3, and the floating portion 6 extends toward the rear portion of the seat cushion 20. When the support bracket 7 is provided and an occupant is seated on the seat cushion 20, A load from one in which the support bracket 7 is formed so as to be acceptable.

  According to the above configuration, the rear portion of the seat cushion 20 is located above the tire accommodating recess 3 and is in a state of floating from the rear floor panel 2. However, when the occupant is seated on the seat cushion 20, the load is applied to the seat cushion 20 Since the rear portion of the seat cushion 20 can be received by the support bracket 7, a reinforcing member such as a seat cushion pan or a seat cushion frame is disposed even if the rear portion of the seat cushion 20 is overhanging the tire accommodating recess 3 in terms of layout. Therefore, the support rigidity of the rear portion of the seat cushion 20 can be ensured so as to be able to cope with the load when the occupant is seated.

  Further, even if the rear seat 10 is arranged so as to overhang the tire accommodating recess 3 in terms of layout, the reinforcing member such as the seat cushion pan and the seat cushion frame and the support member that supports the floating portion 6 are used as described above. Since the support rigidity of the rear seat 10 can be ensured without being provided in the housing recess 3, the space for storing the spare tire 100 can be secured in the tire housing recess 3.

  According to this aspect of the present invention, the support bracket 7 extends to the lower surface 41D of the support member 41 and is coupled (see FIGS. 2, 3, 5, and 7).

  That is, according to the present embodiment, the support bracket 7 includes the vehicle width direction outer end piece 72 extending to the lower surface 41D of the support member 41, and the vehicle width direction outer end piece 72 is formed on the lower surface 41D of the support member 41. When the occupant is seated on the seat cushion 20 because of the joining, even if a counterclockwise moment as seen from the left side of the vehicle acts as shown by the arrow M in FIG. The moment can be directly supported by the support member 41, and the support rigidity against the moment can be improved.

  According to this aspect of the present invention, the support bracket 7 extends to the rear of the support member 41, and is then folded and joined to the support member 41 (FIGS. 2, 3, 5, and 5). 7).

  That is, according to the present embodiment, the support bracket 7 includes the lower surface mounting portion 721 that extends to the rear side of the support member 41 and the rear end 72 of the vehicle width direction provided in the support bracket 7 from the rear side of the support member 41. The rear extending portion 722 extends and is folded back, and the folded lower surface mounting portion 723 is coupled to the support member 41 (see the same figure).

According to the above configuration, the support bracket 7 has both the lower surface mounting portion 721 extending backward and the folded lower surface mounting portion 723 joined to the lower surface 41D of the support member 41. Can be improved.
In addition, according to the present embodiment, the support bracket 7 has the rear extending portion 722 provided on the outer end piece 72 in the vehicle width direction extending from the lower surface 41D of the support member 41 rearward in a U shape in plan view. (See FIGS. 3, 4, and 7).

  According to the above configuration, even if the tire 110 after replacement replaced with the spare tire 100 (the replacement target tire 110 (see FIG. 8B)) cannot be properly accommodated in the tire accommodating recess 3, Affixing means formed of a linear body, a cover body or the like is attached to the tire 110 after replacement, and an engaging portion such as a hook provided in the fixing means is extended rearward from the support member 41. The tire 110 after replacement can be fixed so as not to move.

  Specifically, as shown in FIG. 8A, the spare tire 100 can be fixed with the boss 81 and the thumbscrew 82 while being accommodated in the tire accommodating recess 3 in a substantially horizontal state. Even so, the spare tire 100 can be stably disposed in the tire housing recess 3.

  When the spare tire 100 accommodated in the tire accommodating recess 3 is replaced with the tire 110 to be replaced, the spare tire 100 is removed by loosening the thumbscrew 82 using a tool (not shown) such as a wheel wrench. be able to.

  However, when the spare tire 100 housed in the tire housing recess 3 is replaced with the tire 110 to be replaced and the tire 110 after replacement is housed in the tire housing recess 3, the tire 110 after replacement is shown in FIG. As shown in FIG. 8B, since the size (diameter, thickness, etc.) is usually larger than that of the spare tire 100, the tire housing recess 3 cannot be entirely accommodated and is disposed in an inclined posture. There is.

  For example, the front side of the tire 110 after replacement is arranged in a state in which the rear side cannot be accommodated in the tire accommodating recess 3 even when it can be accommodated in the lower side of the support member 41 and rides on the side edge on the rear side of the tire accommodating recess 3. Will be.

  In that case, the position of the opening 101a at the center of the wheel portion 101 of the tire 110 after replacement and the position of the boss 81 are not aligned, and the tire 110 after replacement can be appropriately fixed by the thumbscrew 82 and the boss 81. In addition, the vehicle travels in a tilted posture, and there is a possibility that stability cannot be ensured by, for example, inadvertent movement during traveling.

  On the other hand, the vehicle 1 according to the present embodiment includes a fixing means 150 having hooks 152 and 152 (engagement portions) at both ends of the wire 151 as shown in FIGS. 7 and 8B. The hooks 152 and 152 provided at both ends are engaged from the left and right sides of the support member 41 to the rear while being engaged with the edge of the opening by passing through an appropriate opening formed in the wheel portion 101 or the like. By engaging with the extending rearward extending portion 722, the tire 110 to be replaced can be fixed without being inadvertently moved even during traveling.

  Further, according to the vehicle seat structure of the present invention, the lower portion of the seat cushion 20 is more rigid than the low-rigidity portion 21 provided in the upper portion thereof, as shown in FIGS. 2, 3, 5, and 6. The cushion foam part 22 as a highly rigid part configured to be higher is provided, and the support bracket 7 is arranged at a position where a load is transmitted from at least a part (rear part) of the cushion foam part 22 when the occupant is seated. Is.

  According to the above configuration, the cushion foam portion 22 can receive the load when the occupant is seated, and the support bracket 7 is arranged at a position where the load is transmitted from at least the rear portion of the cushion foam portion 22 when the occupant is seated. By doing so, the support bracket 7 can reliably receive the load when the occupant is seated.

In the correspondence between the configuration of the present invention and the above-described embodiment, the vehicle floor corresponds to the upper rear cross member 5a, the rear side frame upper 4a, and the rear floor panel 2, and similarly,
The seat corresponds to the rear seat 10,
The digging portion corresponds to the tire receiving recess 3,
The rear extension part of the support bracket from the support member corresponds to the outer end piece 72 in the vehicle width direction,
The upper part of the seat cushion corresponds to the low-rigidity part 21,
Although the high rigidity portion corresponds to the cushion foam portion 22, the present invention is not limited only to the configuration of the above-described embodiment.

  For example, in the above-described embodiment, the rear floor panel 2 is interposed between the rear side frame upper 4a and the rear side frame lower (not shown), and between the upper rear cross member 5a and the lower rear cross member 5b. Although the rear floor panel 2 is interposed, the present invention is not limited to the structure including the rear floor panel 2 as described above. That is, in the present invention, the rear floor panel 2 can be provided between the rear side frame upper 4a and the rear side frame lower or between the upper rear cross member 5a and the lower rear cross member 5b as long as the load can be distributed from the rear seat 10. The structure which is not interposed may be sufficient.

  In the present embodiment, the tire accommodating recess 3 is formed on the rear side of the rear floor panel 2. However, the tire accommodating recess 3 is not limited to the tire accommodating recess 3, and a recess for accommodating luggage other than the spare tire 100 may be formed.

  As described above, the present invention is useful for a vehicle seat structure in which a rear portion of a seat cushion of a seat provided in a vehicle is positioned above a dug portion formed on a vehicle floor.

1 ... Vehicle 2 ... Rear floor panel (vehicle floor)
3 ... Tire housing recess (digging part)
4a ... Rear side frame upper (vehicle floor)
5a: Upper rear cross member (vehicle floor)
6 ... Floating part 7 ... Support bracket 10 ... Rear seat (seat)
20 ... Seat cushion 21 ... Low rigidity part (upper part of seat cushion)
22 ... Cushion foam part (high rigidity part)
41 ... support member 41D ... support member lower surface 72 ... vehicle width direction outer side end piece

Claims (4)

A seat cushion of a seat provided in a vehicle has a seat frameless structure, and is a vehicle seat structure that is attached to a vehicle floor without a seat frame,
Together with the front portion of the seat cushion is attached to the vehicle floor, the rear part is attached to the vehicle floor via the supporting member,
The support member is attached to the vehicle floor at both ends thereof, and has a floating portion that is located above the dug portion formed on the vehicle floor and cannot be attached to the vehicle floor.
The rear part of the seat cushion is arranged to be located above the dug part,
Wherein the floating portion, the support bracket in contact with the rear underside of the seat cushion is extended toward the seat cushion rear lower surface is provided in a cantilever, when the occupant to the seat cushion is seated, the seat A vehicle seat structure formed so that the support bracket can receive a load from the lower surface of the rear portion of the cushion. The vehicle seat structure according to claim 1, wherein the support bracket extends to a lower surface of the support member and is coupled. The vehicle seat structure according to claim 1, wherein the support bracket extends to the rear of the support member, and then is folded and joined to the support member. The lower portion of the seat cushion has a high rigidity portion configured to be higher in rigidity than the upper portion thereof, and the support bracket is a position where a load is transmitted from at least a part of the high rigidity portion when a passenger is seated. The vehicle seat structure according to any one of claims 1 to 3, wherein the vehicle seat structure is disposed on the vehicle.

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