JP4479153B2 - Crossbar structure for seat mounting - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a seat mounting crossbar structure, and more particularly to a seat mounting crossbar structure applied to a vehicle such as an automobile.
[0002]
[Prior art]
Conventionally, in a seat mounting crossbar structure applied to a vehicle such as an automobile, a floor-side lock portion of a locking mechanism is provided on the seat mounting crossbar, and the seat mounting crossbar extends to both left and right ends of the vehicle. And the structure connected with the chassis frame is known (for example, refer patent document 1).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 2001-213359
[Problems to be solved by the invention]
However, in such a configuration, since the cross member has a linear shape, the seat mounting crossbar itself has no energy absorbing portion. As a result, in order to improve the support rigidity of the seat, it is necessary to dispose a vertical member that reinforces the floor panel in the vicinity of the floor-side lock portion, which significantly increases the weight of the vehicle body.
[0005]
In view of the above-described facts, an object of the present invention is to provide a seat mounting crossbar structure capable of improving seat supporting rigidity without significantly increasing the weight of the vehicle body.
[0006]
[Means for Solving the Problems]
According to the first aspect of the present invention, there is provided a fixed portion that is disposed along the vehicle width direction and is attached to the floor panel, a bent portion that is bent downward in the vehicle width direction at a predetermined interval, and the fixed portion. A portion between the bent portions located below the vehicle, a main cross bar provided,
A linear sub cross bar arranged along the vehicle width direction;
A connecting member installed between the bent portion of the main cross bar and the sub cross bar;
A striker for connecting a seat , which is fixed to a portion between the bent portions of the main crossbar and has an engaging portion engageable with a leg portion of the seat;
It is characterized by having.
[0007]
Accordingly, the load input from the seat via the seat connecting striker in which the engaging portion that can be engaged with the leg portion of the seat is formed is disposed along the vehicle width direction and is fixed to the floor panel. And a bending portion that is bent downward in the vehicle width direction with a predetermined interval, a portion between the bending portion that is positioned below the vehicle relative to the fixed portion, and a main cross bar that is directly provided, and a connecting member It also acts from the main crossbar to the sub crossbar via. Further, the vertical load input from the seat through the seat connecting striker is supported by a bent portion bent downward in the vehicle formed in the vehicle width direction on the main cross bar disposed along the vehicle width direction. be able to. Further, the vehicle width direction load inputted from the seat through the seat connecting striker can be supported by a linear sub cross bar arranged along the vehicle width direction. As a result, the strength of the main cross bar and the sub cross bar can be secured against the load input from the seat via the seat connection striker, so There is no need to provide a reinforcing member for improving the load bearing capacity. For this reason, the support rigidity of the seat can be improved without significantly increasing the vehicle body weight. In addition, since the striker for seat connection is fixed at a position between the bent portions located below the vehicle in the main crossbar, it is possible to set the hip point of the occupant seated on the seat downward Become.
[0008]
The present invention according to claim 2 is a main cross bar formed along the vehicle width direction, and formed with a bent portion that is bent downward in the vehicle width direction with a predetermined interval therebetween.
A linear sub cross bar arranged along the vehicle width direction;
A connecting member installed between the bent portion of the main cross bar and the sub cross bar;
A striker for connecting a seat , which is fixed to both the portion between the bent portions of the main crossbar and the connecting member, and has an engaging portion engageable with a leg portion of the seat;
It is characterized by having.
[0009]
Therefore, the load input from the seat through the striker for connecting the seats, which is fixed to both the main crossbar and the connecting member and is formed with an engaging portion engageable with the leg portion of the seat, is applied to the main crossbar. And also acts from the main crossbar to the sub crossbar via the connecting member. Further, the vertical load input from the seat through the seat connecting striker is supported by a bent portion bent downward in the vehicle formed in the vehicle width direction on the main cross bar disposed along the vehicle width direction. be able to. Further, the vehicle width direction load inputted from the seat through the seat connecting striker can be supported by a linear sub cross bar arranged along the vehicle width direction. As a result, the strength of the main cross bar and the sub cross bar can be secured against the load input from the seat via the seat connection striker, so There is no need to provide a reinforcing member for improving the load bearing capacity. For this reason, the support rigidity of the seat can be improved without significantly increasing the vehicle body weight. Further, a load input from the seat via the striker for connecting the seats acts on the sub crossbar via the main crossbar and the connecting member, and acts on the sub crossbar only through the connecting member. As a result, the load on the joint between the main crossbar and the assist plate can be reduced, and the load input from the seat via the seat connection striker can be distributed to the main crossbar and the assist plate by the assist plate. The durability of the seat can be improved and the torsional rigidity of the vehicle can also be improved.
According to a third aspect of the present invention, there is provided the seat mounting crossbar structure according to the first or second aspect, for storing a tire in which a portion between the bent portion of the main crossbar is formed on the floor panel. It is characterized by being inserted into the recess.
Therefore, in addition to the operation of the first or second aspect, the portion between the bent portion of the main cross bar is inserted into the recess for storing the tire formed in the floor panel. Space can be used effectively.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of a seat mounting crossbar structure according to the present invention will be described with reference to FIGS.
[0011]
In the figure, the arrow FR indicates the vehicle body front direction, the arrow UP indicates the vehicle body upward direction, and the arrow IN indicates the vehicle width inside direction.
[0012]
As shown in FIG. 6, in the present embodiment, a recess 12 for storing a tire is formed in the rear portion of a floor panel 10 of an automobile body, and a deck panel 14 is disposed above the recess 12 for storing a tire. It is arranged. Further, the deck panel 14 is divided into a front portion 14A and a rear portion 14B, and can be removed.
[0013]
A notch 16 is formed at the front edge of the rear portion 14B of the deck panel 14 along the vehicle longitudinal direction with a predetermined interval in the vehicle width direction. A vehicle rear inner leg portion 20 of a dive seat 18 that can be stored by rotating forward in the vehicle can be inserted into the notches 16.
[0014]
In addition, a main cross bar 24 is disposed along the vehicle width direction at the rear of the floor panel 10 so as to straddle the recessed portion 12 for storing the tire. A sub cross bar 26 is disposed along the direction.
[0015]
As shown in FIG. 4, the main cross bar 24 is composed of a pipe material having an oval cross-sectional shape with the longitudinal direction of the vehicle being the longitudinal direction, and the sub cross bar 26 is composed of a pipe material having a circular cross-sectional shape. Yes.
[0016]
As shown in FIG. 5, the main cross bar 24 has both end portions 24 </ b> A and 24 </ b> B in the vehicle width direction fixed to the upper surface 10 </ b> A of the floor panel 10 by bolts 30 and nuts 32. A well-known floor size domain bar 33 is disposed along the rear side of the vehicle on the lower surface 10B side. Further, bent portions 24C, 24D bent downward in the vehicle are formed in the vicinity of both ends 24A, 24B in the vehicle width direction of the main cross bar 24, and the vehicle is a portion between the bent portion 24C and the bent portion 24D. The width direction intermediate portion 24 </ b> E is inserted into the tire storage recess 12 of the floor panel 10. The bent portions 24C and 24D of the main cross bar 24 are inclined from the upper side in the vehicle width direction toward the lower side in the vehicle width direction.
[0017]
As shown in FIG. 3, similarly to the main cross bar 24, the sub cross bar 26 has both ends 26A and 26B in the vehicle width direction fixed to the upper surface 10A of the floor panel 10 by bolts 30 and nuts (not shown). Yes.
[0018]
A pair of left and right assist plates 40 as connecting members are disposed along the vehicle front-rear direction in the vehicle width direction intermediate portion 24E of the main cross bar 24. The assist plates 40 are connected to the main cross bar 24. The vehicle width direction intermediate portion 24E and the sub cross bar 26 are installed.
[0019]
As shown in FIG. 2, the assist plate 40 has a U-shaped cross section with the opening facing upward, and a U-shaped recess 42 is formed above the front of both side portions 40A. A flange 40B is formed at the upper end edge of both side portions 40A of the assist plate 40 toward the outside of the opening, and a flange 40C extending forward of the vehicle is formed at the front end edge of the assist plate 40. .
[0020]
As shown in FIG. 4, an arcuate cutout 44 is formed from above at the rear edge of the assist plate 40, and the inner peripheral portion of the cutout 44 is welded to the sub cross bar 26. Further, the upper surface 24F of the vehicle width direction intermediate portion 24E of the main cross bar 24 is welded to the front portion of the lower surface 40D of the assist plate 40, and the lower surface 24G of the vehicle cross direction intermediate portion 24E of the main cross bar 24 is attached to the lower surface 24G. The lower part 48A of the striker 48 for sheet connection is welded. Note that both end portions in the vehicle width direction of the engaging portion 48 </ b> B formed on the upper portion of the striker 48 are welded to the concave portion 42 of the assist plate 40.
[0021]
As shown in FIG. 5, the engagement portion 48 </ b> B of the striker 48 is engageable with the vehicle rear inner leg portion 20 in the dive seat 18, and is locked by a well-known lock mechanism (not shown). The striker 48 and the leg portion 20 are held in a state where they cannot be removed. Further, the vehicle rear outer leg portion 50 in the dive seat 18 is in contact with the upper surface 14C of the rear portion 14B of the deck panel 14, and is supported by the deck panel 14.
[0022]
Next, the operation of this embodiment will be described.
[0023]
In the present embodiment, the load input from the dive type seat 18 via the seat connection striker 48 directly acts on the main crossbar 24 and also from the main crossbar 24 to the sub crossbar 26 via the assist plate 40. Also works.
[0024]
In addition, the vertical load input from the dive seat 18 via the seat connection striker 48 is bent portions 24C and 24D of the main cross bar 24 disposed along the vehicle width direction and bent substantially downward in the vehicle. Can be supported.
[0025]
Further, the vehicle width direction load input from the dive seat 18 via the seat connection striker 48 can be supported by a linear sub cross bar 26 disposed along the vehicle width direction.
[0026]
As a result, in this embodiment, the strength of the main cross bar 24 and the sub cross bar 26 can be secured against the load input from the dive seat 18 via the striker 48 for connecting the seats. In addition, there is no need to provide a reinforcing member for improving the load resistance against the load from the dive type sheet 18 on the floor panel 10 to which the sub bar 26 is fixed. For this reason, the support rigidity of the dive seat 18 can be improved without significantly increasing the vehicle body weight.
[0027]
Further, in the present embodiment, since the engaging portion 48B formed on the upper portion of the striker 48 is welded to the concave portion 42 of the assist plate 40, it is input from the dive seat 18 via the striker 48 for connecting the seats. The load acting on the sub cross bar 26 via the main cross bar 24 and the assist plate 40 and acting on the sub cross bar 26 only via the assist plate 40. As a result, the load on the joint between the main cross bar 24 and the assist plate 40 can be reduced.
[0028]
In the present embodiment, the load input from the dive seat 18 via the sheet connecting striker 48 can be distributed to the main cross bar 24 and the sub cross bar 26 by the assist plate 40. As a result, the durability of the dive seat 18 can be improved and the torsional rigidity of the vehicle can also be improved.
[0029]
Further, in the present embodiment, since the striker 48 for sheet connection is welded to the intermediate portion 24E in the vehicle width direction between the bent portion 24C and the bent portion 24D of the main cross bar 24 bent downward in the vehicle, the dive seat 18 The hip point of the occupant seated in can be set downward.
[0030]
In the present embodiment, the bent portions 24C and 24D of the main cross bar 24 and the vehicle width direction intermediate portion 24E are inserted into the tire storage recess 12 of the floor panel 10. As a result, as shown in FIG. 5, the mounting position of the main cross bar 24 on the floor panel 10 and the concave portion are avoided by avoiding interference between the tire 60 accommodated in the concave portion 12 for storing the tire and the main cross bar 24. The distance H to the bottom 12A of the 12 can be shortened, and the vehicle interior space can be used effectively.
[0031]
Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to such embodiments, and various other embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art. For example, in the above-described embodiment, the seat mounting crossbar structure of the present invention is applied to the dive seat 18, but the seat mounting crossbar structure of the present invention is not limited to the dive seat and can be detached from the vehicle body. It can also be applied to other sheets such as an auxiliary sheet.
[0032]
【The invention's effect】
According to the first aspect of the present invention, there is provided a fixed portion that is disposed along the vehicle width direction and is attached to the floor panel, a bent portion that is bent downward in the vehicle width direction at a predetermined interval, and the fixed portion. A portion between the bent portions located below the vehicle, a main cross bar provided, a linear sub cross bar disposed along the vehicle width direction, and a portion between the bent portions of the main cross bar and the sub A connecting member erected on the cross bar, and a seat connecting striker that is fixed to a portion between the bent portions of the main cross bar and has an engaging portion that can be engaged with a leg portion of the seat. In addition, it has an excellent effect that the support rigidity of the seat can be improved without significantly increasing the weight of the vehicle body. It has an excellent effect that the hip point of the occupant seated on the seat can be set downward.
[0033]
According to a second aspect of the present invention, there is provided a main cross bar that is disposed along the vehicle width direction and has a bent portion that is bent downward in the vehicle width direction with a predetermined interval, and along the vehicle width direction. Both of the linear sub-crossbars arranged in the direction of the main crossbar, the connecting member between the bent portion of the main crossbar and the connecting member laid on the subcrossbar, and the connecting member between the bent portion of the main crossbar and the connecting member. And a seat-connecting striker formed with an engaging portion that can be engaged with the leg portion of the seat, so that the support rigidity of the seat can be improved without significantly increasing the vehicle body weight. It has the effect.
According to a third aspect of the present invention, there is provided the seat mounting crossbar structure according to the first or second aspect, wherein the bent portion of the main crossbar is formed in a recess for storing a tire formed on the floor. Therefore, in addition to the effect of the first or second aspect, the vehicle interior space can be effectively used.
[Brief description of the drawings]
FIG. 1 is a perspective view of a seat mounting crossbar structure according to an embodiment of the present invention, as viewed from the front of a vehicle.
FIG. 2 is an exploded perspective view showing a seat mounting crossbar structure according to an embodiment of the present invention, as seen from the oblique front of the vehicle.
FIG. 3 is a plan view showing a seat mounting crossbar structure according to an embodiment of the present invention.
4 is an enlarged cross-sectional view taken along line 4-4 of FIG.
FIG. 5 is a cross-sectional view of the rear part of the vehicle body to which the seat mounting crossbar structure according to one embodiment of the present invention is applied, as viewed from the front of the vehicle.
FIG. 6 is a perspective view of the rear part of the vehicle body to which the seat mounting crossbar structure according to one embodiment of the present invention is applied, as viewed from the obliquely rearward side of the vehicle.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Floor panel 12 Recess for tire storage of floor panel 18 Dive seat 20 Dive seat leg 24 Main cross bar 26 Sub cross bar 24C Main cross bar bent portion 24D Main cross bar bent portion 24E Main cross bar Middle part in the vehicle width direction (part between the bent parts)
40 Assist plate (connecting member)
48 Striker for connecting seats

Claims (3)

A fixed portion that is disposed along the vehicle width direction and is attached to the floor panel, a bent portion that is bent downward in the vehicle width direction at a predetermined interval, and the bent portion that is positioned below the vehicle relative to the fixed portion. And the main crossbar provided,
A linear sub cross bar arranged along the vehicle width direction;
A connecting member installed between the bent portion of the main cross bar and the sub cross bar;
A striker for connecting a seat , which is fixed to a portion between the bent portions of the main crossbar and has an engaging portion engageable with a leg portion of the seat;
A crossbar structure for mounting a seat, comprising: A main cross bar formed along the vehicle width direction and formed with a bent portion that is bent downward in the vehicle width direction at a predetermined interval;
A linear sub cross bar arranged along the vehicle width direction;
A connecting member installed between the bent portion of the main cross bar and the sub cross bar;
A striker for connecting a seat , which is fixed to both the portion between the bent portions of the main crossbar and the connecting member, and has an engaging portion engageable with a leg portion of the seat;
A crossbar structure for mounting a seat, comprising:   The seat mounting crossbar according to claim 1 or 2, wherein a portion between the bent portion of the main crossbar is inserted into a recess for storing a tire formed in a floor panel. Construction.

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