JPH11321722A - Side member structure of automobile body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a side member structure for a body capable of attaining simplification of the structure, lightening of weight, etc., on condition that body rigidity strength is ensured. SOLUTION: A side outer 1, side inner 2, and a locker inner 4 are connected to each other, a closed section is constituted of these members. The side outer 1 is formed of panel material of high yield point. The side outer 1 is formed of panel material of thick plate. And/or the side inner 2 is arranged in a side of the side outer 1 in the closed section.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side member of a body of a vehicle such as a passenger car, and more particularly to a structure of a rocker.

[0002]

2. Description of the Related Art In a vehicle body side member structure of this kind, a side outer panel,
Reinforce and side inner panels are provided. FIG. 10 shows an example of arrangement of members around side members in a conventional body structure. In the figure, 1 is a side outer panel, and 2 is a side inner panel. Side outer panel 1 and side inner panel 2
In between, a reinforce member including the rocker reinforcement 3, the rocker inner panel 4, and the bulkhead 5 is arranged.

In FIG. 10, a front pillar reinforcement 6 and a center pillar reinforcement 7 are further provided between the side outer panel 1 and the side inner panel 2.
And a roof side rail reinforce 8 above them is arranged and configured.

In the above-mentioned side member structure, the main configuration of the rocker portion includes a side outer panel 1, a side inner panel 2, a rocker reinforcement 3, and a rocker inner panel 4, as shown in FIG. In this rocker portion, a closed cross section as shown in FIG. 12 is formed, and outer and inner side outer panels 1 in this closed cross section are formed.
The rocker reinforcement 7 and the side inner panel 2 are arranged between the rocker inner panel 8 and the rocker inner panel 8.

[0005]

By the way, in the conventional body side member structure, the ratio of the side outer panel 1, the side inner panel 2, and the reinforce members between them, which contribute to the body rigidity, is 20%.
%, 40% and 40%. That is, the side outer panel 1 is significantly smaller than the strength contributions of the other side inner panels 2 and the reinforcement members.
In this structure, the strength is particularly given to the reinforce member, so that the number of components is increased, and there is room for improvement in the arrangement configuration of the member or weight reduction.

The present invention has been made in view of the above points, and has a structure in which a necessary and sufficient body rigidity is ensured and a structure thereof is effectively simplified.
An object of the present invention is to provide a side member structure of a body that can achieve weight reduction and the like.

[0007]

According to a first aspect of the present invention, there is provided a vehicle body side member structure in which a side outer, a side inner, and a rocker inner are joined to each other, and a closed cross-section is formed by these members. A side member structure, wherein the side outer is formed of a panel material having a high yield point. In the side member structure for an automobile body according to the present invention, preferably, the side outer may be formed of a thick panel material. Further, the invention according to claim 3 is a side member structure of a body in which a side outer, a side inner, and a rocker inner are joined to each other, and a closed section is formed by these members. Has a rocker portion arranged on the side outer side.

According to the present invention, in the side member structure, the rigidity of the side outer is strengthened by increasing the thickness of the panel material of the side outer, and sufficient rigidity is achieved while reducing the weight by optimally arranging the reinforce and the like. Can be secured. Further, in particular, by devising the arrangement configuration of the rocker portion and adopting a configuration in which the side inner is disposed on the side outer side, the rocker reinforcement can be abolished, and the structure can be simplified and the weight can be reduced. .

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS. 1 to 9, the same reference numerals are used for substantially the same or corresponding members in the conventional example, and a preferred embodiment of the side member structure of the automobile body according to the present invention is shown. The form will be described. FIG. 1 shows an example of an arrangement configuration of members around a side member in the body structure according to this embodiment. In the drawing, a reinforcement member including a rocker inner panel 4 and a bulkhead 5 is arranged between a side outer panel 1 and a side inner panel 2.

In FIG. 1, the side outer panel 1
A front pillar reinforce 6, a center pillar reinforce 7, and the like are arranged between the side inner panel 2 and the side inner panel 2. In this case, in particular, the conventional rock reinforce (FIG. 10) is abolished, and the structure is simplified and the weight is reduced.

In the present invention, in particular, the side outer panel 1 is formed of a panel material having a high yield point. In this case, the side outer panel 1 is formed of a thick panel material. That is, by increasing the rigidity of the side outer panel 1, the ratio of contributing to the rigidity of the body is improved. In this example, the conventional value is about 20%, but this is greatly improved, and preferably about 40%.

In this way, by increasing the rigidity of the side outer panel 1 and arranging the reinforcement members and the like optimally, it is possible to secure sufficient rigidity while reducing the weight. In addition, in the path of the vibration that enters the room from the external vibration source, the rigidity of the side outer panel 1 is enhanced, so that the vibration can be suppressed by the side outer panel 1 closer to the vibration source. By suppressing the vibration from the vibration source, noise entering the room can be effectively reduced.

FIG. 2 shows another embodiment of the side member structure of the body according to the present invention. In this example, the side outer panel 1, the side inner panel 2, and the rocker inner panel 4 are joined to each other, and a closed section is formed by these members. As shown in FIG. 3, there is a rocker portion in which the side inner panel 2 is arranged on the side outer panel 1 side in this closed cross section.

By arranging the arrangement of the rocker portion, that is, by arranging the side inner panel 2 on the side outer 1 side, the function of a reinforce member is provided. As a result, the conventional rock reinforce (FIG. 10) can be abolished, the number of parts can be reduced, and the structure can be simplified and the weight can be reduced. In the above case, it is preferable to increase the plate thickness of the side outer panel 1 or the rocker inner panel 4 to secure rigidity.

FIGS. 4 to 8 show some modified examples of the side inner panel 2 and sectional structures corresponding to the modified examples. (B) of each drawing shows a cross-sectional configuration in each aspect of the side inner panel 2.

By arranging the side inner panel 2 on the side outer 1 side in each of the embodiments, a role of a reinforce member can be provided similarly to the case of the example of FIG. it can.

As shown in FIG. 9, the side member structure having the rocker portion can be connected to the floor 9 or the cross member 10.

[0018]

As described above, according to the present invention, the rigidity of the side outer is particularly enhanced in the side member structure, or the arrangement of the members around the rocker portion is devised to secure a predetermined rigidity. However, simplification and weight reduction of the structure can be effectively realized. According to the novel side member structure, there is an advantage that the cost can be substantially reduced by reducing the number of parts.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an example of an arrangement configuration of members around a side member in a body structure according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing an example of an arrangement configuration of members around side members in a body structure according to another embodiment of the present invention.

FIG. 3 is a sectional view taken along the line A'-A 'or the line B'-B' of FIG.

4 is a diagram showing a modified example of the side inner panel according to the embodiment of FIG. 2 and a cross-sectional configuration corresponding to the modified example.

5 is a diagram showing another modified application example of the side inner panel according to the embodiment of FIG. 2 and a cross-sectional configuration corresponding thereto.

6 is a diagram showing another modified application example of the side inner panel according to the embodiment of FIG. 2 and a cross-sectional configuration corresponding thereto.

FIG. 7 is a diagram showing still another modified application example of the side inner panel according to the embodiment of FIG. 2 and a cross-sectional configuration corresponding thereto.

8 is a diagram showing still another modified application example of the side inner panel according to the embodiment of FIG. 2 and a cross-sectional configuration corresponding thereto.

FIG. 9 is a cross-sectional view showing a connection relationship between a side member structure according to the present invention and a floor or a cross member.

FIG. 10 is an exploded perspective view showing an example of an arrangement configuration of members around a side member in a conventional body structure.

FIG. 11 is an exploded perspective view showing a main configuration of a rocker portion in a conventional body structure.

FIG. 12 is a sectional view taken along line AA or BB in FIG. 11;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Side outer panel 2 Side inner panel 4 Rocker inner panel 5 Bulkhead 6 Front pillar reinforce 7 Center pillar reinforce

Claims (3)

[Claims] 1. A side member structure of an automobile body in which a side outer, a side inner and a rocker inner are joined to each other, and a closed section is formed by these members, wherein the side outer is a panel material having a high yield point. A side member structure of an automobile body characterized by being formed by: 2. The vehicle body side member structure according to claim 1, wherein the side outer is formed of a thick panel material. 3. A side member structure of an automobile body in which a side outer, a side inner, and a rocker inner are joined to each other, and a closed section is formed by these members, wherein the side inner is located on the side outer side in the closed section. A side member structure of an automobile body, having a rocker portion to be disposed.