JPH10203426A - Structure of front seat cross member for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the degree of being pressed into the cabin side to the side collision force by providing inner and outer flanges of a cross member of a front seat by a square box structure, and grooves in longitudinal and transverse direction to increase the strength, a recessed part in the forward side and a stepped part on the rear side. SOLUTION: A cross member 30 is of integrated square box structure, an inner flange 36 and an outer flange 34 are horizontally projected on the inner side and on the outer side of a bottom part respectively, and welded to a center floor panel 20. Members 33a, 33b are formed on a forward part and a rear part. The member 33a secures the working space of a seat while the member 33b secures a foot space of passengers in rear seat as a foot rest. An inclined support part 35 is formed in an inner peripheral surface, and grooves 38 in the longitudinal and transverse direction are formed to increase the strength. The safety in side collision is secured thereby.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an integrated structure of a front seat cross member, and more particularly, to a conventional seat structure which supports a side wall so as to reduce a ratio of a side sill pushed into a room in a side collision of a vehicle. -The number of parts of the member bracket for mounting is integrally formed from three parts into one part to reduce the number of parts, and the strength is increased and transmitted directly to the passengers in the room. The present invention relates to a structure of a front seat cross member for a vehicle invented so as to secure a passenger's safety by minimizing an impact amount and to reduce a manufacturing cost by simplifying a number of parts and a work process.

[0002]

2. Description of the Related Art An example of the structure of a conventional front sheet cross member will be described with reference to FIGS. FIG. 5 is a plan view, FIG. 6 is a sectional view taken along the line AA of FIG. 5, and reference numeral 20 denotes a center floor panel.

[0003] One side of the center floor panel 20 is
The side sill 10 is formed on the center floor square tunnel portion 25 and is connected to the other side. This side sill 10
Is formed by an outer panel 11 and an inner panel 13. A mounting rear bracket 22 is provided on the side sill 10, and a mounting center bracket 23 is provided on the center floor square tunnel portion 25, and the front seat cross number 21 is provided between the brackets 22, 23.

[0004]

Therefore, usually, the front sheet cross member 2 for supporting the inner panel 13 of the side sill 10 while the front sheet is mounted.
1 and the mounting rear bracket 22 when the double collision wall 14 (see FIG.
There is a phenomenon that the rate at which the side sill 10 is pushed into the room increases.

Therefore, the front seat cross member 2
1 and the side edges of the mounting rear bracket 22 are severely deformed, so that the amount of direct impact applied to the passengers in the cabin increases, and the pervis value corresponding to the pelvis in the middle of the obstacle value of the human body increases. Also, the front sheet cross member 2 is used to mount the front sheet.
1. The use of the three parts, the mounting rear bracket 22 and the mounting center bracket 23, requires a large number of parts, and causes an increase in the number of working steps, which causes a problem of an increase in cost.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to fix a front sheet cross member on a center floor by deforming a sectional structure of an integrated rectangular box. It is easy to install, and by supporting the rear part of the side sill against the side impact force applied in the event of a vehicle collision, the ratio of being pushed into the room is reduced, and the man-hour of the vehicle can be reduced. -To provide a structure of the cross member.

[0007]

According to a first aspect of the present invention, there is provided a front seat cross member for an automobile, wherein the cross member has a rectangular box structure and an inner side thereof. An inner flange and an outer flange are provided on the bottom surface on the outside and a side sill support portion is provided on one of the left and right sides of the upper surface, and a tunnel support portion is horizontally protruded on the other. The side sill support is connected to the side sill, and the tunnel support is connected to the center flange square tunnel of the center floor panel.

According to a second aspect of the present invention, there is provided a front seat cross member for an automobile, wherein the cross member is provided with a horizontal groove and a vertical groove for increasing strength. It is characterized by being.

According to a third aspect of the present invention, there is provided a front seat cross member for an automobile, wherein the cross member has a recess as a seat operating space at a front side and a rear side at a rear side. It is characterized in that a step portion is provided as a footrest for placing a foot on a passenger of a seat.

Further, the structure of the front seat cross member for an automobile according to claim 4 of the present invention is characterized in that the integral molding of the cross member is drawer molding.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view showing one embodiment of the present invention, FIG. 2 is a plan view showing one embodiment of the present invention, FIG. 3 is a sectional view taken along line BB of FIG. 2, and FIG. FIG. 2 is a schematic perspective view showing the same components, and the same reference numerals as those in the conventional example denote the same components, and redundant description will be omitted.

In FIG. 1, reference numeral 20 denotes a center floor panel, and reference numeral 30 denotes a cross member. Cross member 30
Has a rectangular box structure integrally formed by drawer molding. An inner flange 36 is provided on the inner side on the bottom side, and an outer flange 34 is provided on the outer side in a horizontal direction. It is connected to the center floor panel 20 by welding or the like.

The cross member 30 is provided with a side sill support portion 31 on one of the left and right sides of the upper surface, and a tunnel portion support portion 32 protruding in the horizontal direction on the other. The side sill support portion 31 is connected to the side sill 10, and the tunnel portion support portion 32 is connected to the square tunnel portion 25 of the center floor panel 20. In this embodiment, holes 31a, 31b, 32 for front seat mounting are provided.
a, 32b are drilled, and the holes 31a, 31b, 3
They are joined by welding using 2a and 32b.

Further, at the front and rear of the cross member 30,
The recesses (steps) 33a and 33b are formed by bending. The concave portion 33a is a deformation section for securing a working space of the sheet and increasing the strength, and the concave portion (step portion) 33b serves as a footrest as a footrest for a passenger in a rear seat. This is a deformation section to be secured.

Further, the inner peripheral surface of the cross member 30 is formed on an inclined support portion 35 having an inclined surface, and the cross member 30 has a vertical groove 38 and a horizontal groove 38 formed thereon. , The strength is increased. This ensures safety in a side collision.

[0016]

According to the present invention, as described in detail above, the following effects can be obtained. (1) The front sheet cross member of the present invention is integrally formed as a whole and is connected to the side sill and the center floor panel, so that the cost can be reduced by reducing the number of other parts.

(2) Further, according to the present invention, the strength of the cross member is increased, and the connection between the side sill and the center floor panel is strengthened. It has the effect of reducing the amount of direct and indirect impacts applied to the human body, thereby reducing the pelvis value corresponding to the pelvis during the human body damage value.

(3) Since the cross member is provided with the horizontal groove and the vertical groove, the strength is increased.

(4) Further, since the cross member is formed with a step portion for foot placement, it can be conveniently used as a footrest.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a plan view showing one embodiment of the present invention.

FIG. 3 is a sectional view taken along line BB of FIG. 2;

FIG. 4 is a schematic perspective view showing a body frame.

FIG. 5 is a plan view showing a conventional example.

FIG. 6 is a sectional view taken along line AA of FIG. 5;

[Explanation of symbols]

 Reference Signs List 10 side sill 20 center floor panel 30 front sheet cross member 31 side sill support 32 tunnel support 33a recess 33b recess (step) 34 outer flange 35 inclined support 36 inner flange 37 vertical groove 38 lateral glue −

Claims (4)

[Claims] 1. A structure of a front seat cross member, wherein the cross member has a rectangular box structure, and has an inner flange and an outer flange provided on inner and outer bottom surfaces thereof,
Also, a side sill support portion is protruded horizontally on one of the left and right sides of the upper surface, and a tunnel support portion is horizontally formed on the other, and the inner and outer flanges are formed on the center floor panel, the side sill support portion is formed on the side sill, and the tunnel portion is formed. The support part is in the center flange square tunnel part of the center floor panel,
A structure of a front seat cross member for an automobile, wherein the cross member is connected to each other. 2. The structure of a front seat cross member for an automobile according to claim 1, wherein the cross member is provided with a horizontal groove and a vertical groove for increasing strength. 3. The cross member is provided with a concave portion as a seat operating space on the front side and a step portion as a footrest for a foot of a passenger in a rear seat on the rear side. The structure of an automobile front seat cross member according to claim 1, wherein: 4. The structure of an automobile front seat cross member according to claim 1, wherein said cross member is integrally formed by drawer molding.