JPH05155358A - Car side body structure - Google Patents

Abstract

(57) [Abstract] [Purpose] The weight and weight of the cross member, which is placed on the top surface of the floor panel and gives the required strength and rigidity to the vehicle body, is reduced, and the strength and rigidity of the side portion of the vehicle body are improved. The harnesses arranged on the panel side edge can be favorably arranged while avoiding interference with other arrangement members, and the sealing work for the joint between the floor panel side edge and the side sill is easy. The purpose is to be able to do. [Structure] A step portion 5b is formed on a floor panel side edge portion 5a, and an end face of the step portion 5b is joined to a vertical wall surface 3c of a side sill inner panel 3 which constitutes a side sill 1, and
The end surface 6b of the side edge portion 6a of the cross member 6 arranged on the upper surface of the floor panel 5 is joined to the step portion 5b,
Further, the side edge portion 6a of the cross member 6 and the side sill inner panel 3 are connected by a thick plate member 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a side body structure of an automobile,
In particular, the present invention relates to a side vehicle body structure in the vicinity of a joint between a side edge portion of a floor panel having a cross member extending in the vehicle width direction arranged on an upper surface thereof and a side sill having a closed cross section extending forward and backward below a side portion of the vehicle body.

[0002]

2. Description of the Related Art For example, as shown in Japanese Utility Model Laid-Open No. 3-40287, a closed cross section is provided below a side portion of an automobile body in a front-rear direction in order to impart required strength and rigidity to the automobile body. A side sill having a shape is arranged, and a side edge portion of a floor panel is joined to a wall surface of the side sill on the vehicle inner side.
Further, in order to enhance the strength and rigidity of the vehicle body, a cross member forming a closed cross section with the floor panel may be arranged on the upper surface of the floor panel in the vehicle width direction.

[0003]

By the way, with respect to the cross member arranged on the floor panel as described above, within a range in which required strength and rigidity can be secured,
There is a demand to reduce the weight of the vehicle body by setting the plate thickness as thin as possible. Among the cross members arranged on the floor panel, especially the pillars where both sides form the door opening periphery. For the cross member that is joined to the parts and contributes to strength and rigidity against impact load when opening and closing the door and torsional load that acts on the vehicle body, reduce the plate thickness for the purpose of reducing the vehicle body weight. There is concern that the adverse effect of such a reduction may be difficult, and thus it is difficult to reduce the plate thickness.

On the other hand, harnesses are arranged at the side edge of the floor panel joined to the inner wall surface of the side sill that extends forward and backward below the side of the vehicle body.
These harnesses are projected on the floor panel, which is an obstacle when arranging other mounting members on the floor panel.

Further, in the vehicle body side portion where the side edge of the floor panel and the side sill are joined, rainwater and the like from the outside of the vehicle are prevented from intruding along the joint portion of the two to prevent airtightness inside the vehicle. Although a seal is applied in order to increase the height, the joint between the side edge of the floor panel and the vertical wall surface on the vehicle interior side of the side sill is usually flush with each other. When applying a sealant along a part, the sealant hangs down from the joint part and it becomes difficult to form a good seal layer on the part, and the workability at the time of sealing work and the sealability are deteriorated. It was.

Therefore, the present invention is directed to an automobile in which a cross member is provided on the upper surface of a floor panel to form a closed cross section between the floor panel and the floor panel, thereby imparting required strength and rigidity to the vehicle body. While improving the strength and rigidity of the side portion of the vehicle body while reducing the weight of the vehicle, and arranging the harnesses arranged on the side edge portion of the floor panel satisfactorily while avoiding interference with other arrangement members. It is an object of the present invention to provide a side vehicle body structure that can perform a sealing operation for a joint portion between a side edge of a floor panel and a side sill while being able to do so.

[0007]

In order to solve the above problems, the present invention is characterized in that it is configured as follows.

First, the invention according to claim 1 of the present application (hereinafter,
According to a first invention), a side edge portion of a floor panel is joined to a side sill having a closed cross section that extends forward and backward below a side portion of a vehicle body, and is closed on the upper surface of the floor panel with the floor panel. In a side vehicle body structure of an automobile in which cross members forming a cross section are arranged in a vehicle width direction, side edges of the floor panel are formed in a step shape that descends downward, and an end surface of the step portion is an inside of the side sill. The side sill inner panel constituting the vertical wall surface of the cross member, the side edge end surface of the cross member is joined to the stepped portion of the floor panel side edge, and the side edge of the cross member and the side sill inner panel are joined together. It is characterized in that they are connected by a thick plate member arranged above the step portion.

The invention according to claim 2 of the present application (hereinafter,
The second invention) is characterized in that, in addition to the constitution of the first invention, the lower surface of the side end portion of the thick plate member is joined to a step portion formed on the side sill inner panel and protruding toward the vehicle inner side.

The invention according to claim 3 of the present application (hereinafter,
A third invention) is characterized in that a sheet mounting portion is formed on the thick plate member in the first and second inventions.

[0011]

According to the first aspect of the invention, the side edge portion of the cross member which is arranged on the floor panel and forms a closed cross section with the floor panel, and the side sill formed in the closed cross section have a longitudinal length inside the vehicle. Since the side sill inner panel forming the wall surface is connected by the thick plate member, by the thick plate member,
The strength and rigidity around the joint between the side edge of the floor panel and the side sill that forms the side part of the vehicle body are improved, which ensures the required strength and rigidity of the cross member. The cross member can be reduced within the range that can be obtained, and the cross member can be reduced in weight and the vehicle body weight can be reduced. Particularly, when the side sill inner panel to which the ends of the thick plate member are joined forms a part of the pillar portion forming the periphery of the door opening, the pillar portion and the side edge portion of the cross member are thick. Since they are connected by the plate member, even if the plate thickness of the cross member is reduced, the strength and rigidity of the periphery of the pillar portion are not reduced.

Further, since a step portion which descends downward is formed at the edge portion on the side of the floor panel, by disposing the harnesses along the step portion, the harnesses can be projected onto the floor panel. Is prevented, and the harnesses can be favorably arranged while avoiding interference with other arrangement members.

Furthermore, since the end face of the step portion is joined to the side sill inner panel, a corner portion is formed at the joint portion of both, and the sealant is applied along the corner portion. Only by doing so, it is possible to prevent the sealing agent from dripping or breaking, and to form the sealing layer favorably, which facilitates the sealing operation and improves the sealing property.

In particular, according to the second aspect of the invention, since the side sill inner panel is formed with a step and the lower surface of the side end of the thick plate member is joined to this step, the thick plate member and the side sill inner panel are joined. The joint strength between the joint and the joint is further strengthened, and the strength and the rigidity of the joint are further improved.

Further, according to the third invention, the first and second
Similar to the invention, the thick plate member connected to the side edge of the cross member and the side sill inner panel enhances the strength and rigidity of the periphery of the joint between the side edge of the floor panel and the side sill, and at the same time, increases the strength and rigidity. Since the seat attachment portion is formed on the thick plate member that constitutes the periphery of the increased joint portion, the attachment strength of the seat is further improved.

[0016]

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

FIG. 1 is a perspective view of a first embodiment of a side vehicle body structure according to the present invention as seen from the front inside the vehicle, and FIG. 2 is an enlarged cross-sectional view of the main parts thereof. A side sill 1 extending in the front-rear direction is arranged below the side portion of the vehicle body. The side sill 1 is composed of a side sill outer panel 2 located outside the vehicle and a side sill inner panel 3 located inside the vehicle. The flanges 2a, 3a and 2b, 3b formed at the upper and lower ends of the are joined together to form a closed cross section (a) by the panels 2 and 3, and the side sill 1 extends in the vertical direction of the vehicle body. Pillars 4 that extend to form the periphery of the door opening are joined. The pillar portion 4 is composed of an outer panel 4a and an inner panel 4b, and a closed cross section (b) is formed by both panels 4a and 4b. The lower end of the outer panel 4a is joined to the side sill outer panel 2 and
The lower end of the inner panel 4b is extended into a closed cross section (a) formed by the side sill outer panel 2 and the side sill inner panel, and is joined between the flange portions 2b and 3b of both panels 2 and 3 to form the inner panel 4b. By the lower end of and the vertical wall surface 3c of the side sill inner panel 3,
As shown in FIG. 2, a closed cross section (C) is formed.

Then, the side edge portion 5a of the floor panel 5 which constitutes the floor surface portion of the vehicle body is joined to the side sill inner panel 3 which constitutes the side sill 1, and the side edge portion 5a is located below the side edge portion 5a. An inclined step portion 5b is formed at the end, and the end surface of the step portion 5b is bent and extended downward, and is joined and fixed to the vertical wall surface 3c of the side sill inner panel 3 by an appropriate means such as welding.

Further, a cross member 6 extending in the vehicle width direction is arranged on the upper surface of the floor panel 5, and the cross member 6 and the floor panel 5 form a closed cross section (d) as shown in FIG. ) Is formed, the end surface 6b of the side edge portion 6a of the cross member 6 is inclined downward, and its lower end is joined to the upper surface of the step portion 5b formed on the floor panel side edge portion 5a. There is.

Further, above the step portion 5b, the side sill inner panel 3 is joined with the inner panel 4b constituting the pillar portion 4 from the side edge portion 6a of the cross member 6.
The thick plate member 7 is arranged over the flange portion 3a of the cross member 6. The thick plate member 7 has a front wall portion 7a, an upper wall portion 7b, and a rear wall portion 7c, and has the same shape as the cross member 6. In addition, one side portion on the inside of the vehicle is joined to the side edge portion 6a of the cross member 6, and each flange portion 7d, 7e, 7f formed on the other side portion is joined to the flange portion 3a of the side sill inner panel 3. Has been done.

Further, a step portion 3d protruding inwardly of the vehicle is formed on an upper portion of the vertical wall surface 3c of the side sill inner panel 3, and the front wall portion 7 of the thick plate member 7 is formed at the step portion 3d.
a and the flanges 7 formed integrally with the rear wall portion 7c
a 'and 7c' are joined.

A seal layer 8 is formed at the joint between the step portion 5b formed on the side edge portion 5a of the floor panel and the vertical wall surface 3c of the side sill inner panel 3.

As shown in FIG. 2, a bracket 9 is fixedly mounted on the lower surface of the floor panel 5, and is fixedly mounted on the bracket 9 and a chassis frame (not shown) forming the skeleton of the vehicle body. A mount member 11 connected to the frame-side bracket 10 is disposed between the frame-side bracket 10 and the frame-side bracket 10. The mount member 11 allows the entire upper body including the side sill 1 and the floor panel 5 to be attached to the chassis. It is elastically supported by the frame.

According to the above construction, the side edge portion 6a of the cross member 6 arranged on the floor panel 5 and forming a closed cross section with the floor panel 5, and the side sill 1 formed in the closed cross section shape. Since the side sill inner panel 3 constituting the side sill is connected by the thick plate member 7, the strength and rigidity around the joint between the floor panel side edge portion 5a constituting the vehicle body side portion and the side sill 1 are improved. As a result, the plate thickness of the cross member 6 can be reduced within a range in which required strength and rigidity can be secured, the cross member 6 can be made lighter, and the vehicle body weight can be reduced. Will be. Particularly, the pillar portion 4 forming the periphery of the door opening is joined to the side sill inner panel 3 to which the end portion of the thick plate member 7 is joined, and the side edge portion 6a of the pillar portion 4 and the cross member 6 is joined. Since and are connected by the thick plate member 7, even when the plate thickness of the cross member 6 is reduced, the strength and rigidity of the peripheral portion of the pillar portion 4 are not reduced.

Further, since the step portion 5b inclined downward is formed on the edge portion 5a on the floor panel side, by arranging harnesses (not shown) along the step portion 5b, the harness can be provided. The harnesses can be prevented from projecting onto the floor panel 5, and the harnesses can be satisfactorily arranged while avoiding interference with other arranging members.

Further, since the end face of the step portion 5b is joined to the side sill inner panel 3, an upward-opening acute-angled corner portion is formed at the joint portion between the two. By only applying the sealant along the corners, the sealant can be prevented from sagging and discontinuity, and the seal layer 8 can be satisfactorily formed. As a result, the sealing operation becomes extremely easy and the sealability is improved. Will be improved.

Particularly, the side sill inner panel 3 has a step portion 3
d is formed and the flange portions 7a ', 7c' of the thick plate member 7 are joined to the stepped portion 3d, so that the joining strength of the joining portion between the thick plate member 7 and the side sill inner panel 3 is further improved. It becomes strong, and the strength and rigidity of the portion are further improved.

Next, a second embodiment of the side vehicle body structure according to the present invention will be described with reference to FIGS. 3 and 4. Also in this embodiment, as in the first embodiment, the lower side portion of the vehicle body is lowered. The side sill outer panel 22 located outside the vehicle.
And a side sill inner panel 23 located inside the vehicle, a side sill 21 having a closed cross section (a) is arranged in the front-rear direction, and the side sill 21 extends in the vehicle body vertical direction and surrounds the door opening. The pillars 24 constituting the above are joined together. This pillar portion 24 is used for the outer panel 2
4a and the inner panel 24b, both panels 24a,
24b forms a closed cross section (b), the lower end of the outer panel 24a is joined to the side sill outer panel 22, and the lower end of the inner panel 24b is formed by the side sill outer panel 22 and the side sill inner panel 23. It extends in the cross section (a) and is joined between both panels 22 and 23, and the lower end of the inner panel 24b and the vertical wall surface 2 of the side sill inner panel 23 are joined together.
As shown in FIG. 4, a closed cross section (C) is formed by 3c.

A step portion 25b inclined downward to a side edge portion 25a of the floor panel 25 constituting the floor surface portion of the vehicle body.
Is formed, the end face of the step portion 25b is bent and extended downward, and the side sill inner panel 2
It is joined and fixed to the vertical wall surface 23c of No. 3 by an appropriate means such as welding.

Further, on the upper surface of the floor panel 25,
A cross member 26 extending in the vehicle width direction is arranged,
As shown in FIG. 3, a closed cross section (d) is formed by the cross member 26 and the floor panel 25, and the end surface 26b of the side edge portion 26a of the cross member 26 is inclined downward and the lower end thereof is formed. Is the edge 2 on the floor panel side
It is joined to the upper surface of the step portion 25b formed in 5a.

Above the step portion 25b, the thick plate member 27 extends from the side edge portion 26a of the cross member 26 to the flange portion 23a of the side sill inner panel 23 to which the inner panel 24b constituting the pillar portion 24 is joined.
Are arranged, and the thick plate member 27 has a front wall portion 27a.
And the upper wall portion 27b and the rear wall portion 27c, and has the same shape as the cross member 26, one side portion on the vehicle interior side is joined to the side edge portion 26a of the cross member 26, and the other side. Each flange portion 27d, 27e, 2 formed in the portion
7f is a flange portion 23a of the side sill inner panel 23
Is joined to.

Further, on the upper portion of the vertical wall surface 23c of the side sill inner panel 23, a step portion 23d protruding inward of the vehicle is formed.
Is formed on the stepped portion 23d.
The front wall portion 27a and the rear wall portion 27c are integrally joined to the respective flanges 27a 'and 27c'.

The inclined surface portion 25b formed on the side edge portion 25a of the floor panel and the side sill inner panel 2
The seal layer 28 is provided at the joint portion with the vertical wall surface 23c in FIG.
Are formed.

In the second embodiment, a seat mounting portion 27g protruding upward is integrally formed with the upper wall portion 27b of the thick plate member 27, and the seat mounting portion 27g is mounted with the seat mounting portion 27g. A hole 29 is formed, and a nut 30 is fixed in advance on the back side of the hole 29. As shown by a chain line in FIG. 4, a slide rail 31 for supporting a front seat (not shown) so as to be movable back and forth. The rear end can be attached.

According to the above construction, as in the first embodiment, the floor panel 2 is arranged on the floor panel 25.
5, the side edge portion 26a of the cross member 26 that forms a closed cross section with the side member 5 and the side sill inner panel 23 that forms the side sill 21 that has a closed cross section are connected by the thick plate member 27. The strength and rigidity around the joint between the floor panel side edge portion 25a forming the side portion and the side sill 21 are improved, whereby the strength and rigidity required for the plate thickness of the cross member 26 is secured. The cross member 26 can be lightened and the vehicle body weight can be reduced. Particularly, the pillar portion 24 forming the periphery of the door opening is joined to the side sill inner panel 23 to which the end portion of the thick plate member 27 is joined, and the pillar portion 24 and the side edge portion 26 a of the cross member 26. Since and are connected by the thick plate member 27, even if the plate thickness of the cross member 26 is reduced, the strength and rigidity of the peripheral portion of the pillar portion 24 are not reduced.

Further, since the floor panel side edge portion 25a is formed with a step portion 25b which descends downward, by disposing harnesses (not shown) along the step portion 25b, the harnesses are provided. Is prevented from protruding above the floor panel 25, and the harnesses can be satisfactorily arranged while avoiding interference with other arranging members.

Further, an upwardly-opening acute-angled corner is formed at the joint between the end face of the step 25b and the side sill inner panel 23, and a sealant is applied along the corner. Only by applying, it is possible to prevent the sealing agent from dripping and breaking, and to form the sealing layer 28 satisfactorily. This makes the sealing work extremely easy and improves the sealing property.

A step portion 23d is formed on the side sill inner panel 23, and the thick plate member 27 is formed on the step portion 23d.
Since the flange portions 27a 'and 27c' are joined, the joining strength is further strengthened, and the strength and rigidity of these portions are further improved.

Particularly, in the second embodiment, as in the first embodiment, the thick plate member 27 connected to the cross member side edge portion 6a and the side sill inner panel 23 allows the floor panel side edge portion 25a. The strength and rigidity of the periphery of the joint between the side sill 21 and the side sill 21 are enhanced, and the sheet mounting portion 27g is formed in the thick plate member 27 that constitutes the periphery of the joint where the strength and rigidity are enhanced. The strength will be further improved.

[0040]

As described above, according to the first aspect of the present invention, the thickness for connecting the side edge portion of the cross member arranged on the floor panel and the side sill inner panel forming the vertical wall surface on the vehicle interior side of the side sill. The plate member improves the strength and rigidity of the periphery of the joint between the side edge of the floor panel and the side sill forming the side part of the vehicle body. As a result, the plate member of the cross member has the required strength and rigidity. The cross member can be reduced in weight and the weight of the vehicle body can be reduced. Particularly, when the side sill inner panel to which the ends of the thick plate member are joined forms a part of the pillar portion forming the periphery of the door opening, the pillar portion and the side edge portion of the cross member are thick plates. Because it will be connected by members,
Even when the thickness of the cross member is reduced, the strength and rigidity of the peripheral portion of the pillar portion are not reduced.

Further, since the step portion which descends downward is formed at the edge portion on the side of the floor panel, by disposing the harnesses along the step portion, the harnesses can be projected onto the floor panel. Is prevented, and the harnesses can be satisfactorily arranged while avoiding interference with other arranging members.

Furthermore, since the end of the step is joined to the side sill inner panel, a corner is formed at the joint between the two, and the sealant is applied along the corner. Only by doing so, the sealing agent can be prevented from dripping or being interrupted, and the sealing layer can be formed well, whereby the sealing work becomes extremely easy and the sealing property is improved.

Particularly, according to the second aspect of the invention, since the side sill inner panel is formed with the step portion and the lower surface of the side end portion of the thick plate member is joined to the step portion, the thick plate member and the side sill inner panel are joined. The joint strength of the joint portion with and is further strengthened, and the strength and rigidity of the joint portion can be further improved.

According to the third invention, the first and second
Similar to the invention, the thick plate member connected to the side edge of the cross member and the side sill inner panel enhances the strength and rigidity of the periphery of the joint between the side edge of the floor panel and the side sill, and at the same time, increases the strength and rigidity. Since the seat attachment portion is formed on the thick plate member that constitutes the periphery of the increased joint portion, the attachment strength of the seat is further improved.

[Brief description of drawings]

FIG. 1 is a perspective view of a first embodiment of a side body structure of an automobile according to the present invention, as viewed from the front inside the vehicle.

FIG. 2 is an enlarged sectional view of an essential part showing a side vehicle body structure of the first embodiment.

FIG. 3 is a perspective view of the side vehicle body structure of the second embodiment as viewed from the front inside the vehicle.

FIG. 4 is an enlarged sectional view of an essential part showing a side vehicle body structure of a second embodiment.

[Explanation of symbols]

 1, 21 Side sill 2,22 Side sill outer panel 3,23 Side sill inner panel 3c, 23c Vertical wall surface 3d, 23d Step 5,25 Floor panel 5a, 25a Side edge 5b, 25b Step 6,6 Cross member 6a, 26a side Edge 7,27 Thick plate member 27g Seat mounting part

Claims (3)

[Claims] 1. A side edge portion of the floor panel is joined to a side sill having a closed cross-section shape extending forward and backward below a side portion of the vehicle body, and a closed cross section is formed on the upper surface of the floor panel with the floor panel. The cross member to be formed is a side body structure of an automobile arranged in the vehicle width direction, and the side edge portion of the floor panel is formed in a step shape that is lowered downward,
An end surface of the step portion is joined to a side sill inner panel forming a vertical wall surface on the vehicle interior side of the side sill, a side edge portion end surface of the cross member is joined to a step portion of a floor panel side edge portion, and A side vehicle body structure of an automobile, wherein a side edge portion of a cross member and the side sill inner panel are connected by a thick plate member arranged above a step portion. 2. A side edge portion of the floor panel is joined to a side sill having a closed cross-sectional shape extending forward and backward below a side portion of the vehicle body, and a closed cross section is formed on the upper surface of the floor panel with the floor panel. The cross member to be formed is a side body structure of an automobile arranged in the vehicle width direction, and the side edge portion of the floor panel is formed in a step shape that is lowered downward,
An end surface of the step portion is joined to a side sill inner panel forming a vertical wall surface on the vehicle interior side of the side sill, a side edge portion end surface of the cross member is joined to a step portion of a floor panel side edge portion, and The side edge portion of the cross member and the side sill inner panel are connected by a thick plate member arranged above the step portion, and the lower surface of the side end of the thick plate member is formed on the side sill inner panel and protrudes to the inside of the vehicle. A side body structure of an automobile characterized by being joined to a step portion. 3. The side vehicle body structure for an automobile according to claim 1, wherein the thick plate member is formed with a seat attachment portion.