JPH11278303A - Side panel structure of cab - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve stiffness of a side panel structure of a cab, improve a welding work efficiency and a welding reliability, reduce a mold cost, and improve yield. SOLUTION: A cross sectional form of a back side cant rail 7b' of a cant rail portion 7 in an integrally formed lateral outer panel 1" is formed substantially identical to a cross sectional form of closing front pillar panel 2. The closing front pillar panel 2 removed a portion corresponding to a back side closing front pillar panel 2b and being composed of only a front side closing pillar panel 2a, and a cant rail panel 3 are welded to the lateral outer panel 1" to form a closed cross section.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side panel structure for forming around a side door of a cab of, for example, a vehicle having a chassis frame, and more particularly to an improvement in rigidity, a reduction in press man-hours, an improvement in yield, and a press die. The present invention relates to a cab side panel structure for reducing costs.

[0002]

2. Description of the Related Art There are various types of cab side panel structures in a vehicle having a chassis frame or the like, but a split type structure shown in FIG. 7 has been conventionally adopted due to a molding die. That is, as shown in FIG. 7, the conventional side panel is a split-type side outer panel 1a.
And a front pillar panel 16, and reinforcements 17, 18 and the like as reinforcing members interposed between the side outer panel 1a and the closing front pillar panel 16 and welded thereto. In addition,
The side outer panel 1a includes a front pillar 19, a cant rail 20, a center pillar 21, a rocker panel 22, and the like, and their joints are welded.

[0003]

In order to make the side panel structure highly rigid, reinforces 17 and 18 are used. In particular, front pillars 19 and cantilever 20 are used.
As shown in FIG. 8, the portion where the reinforce 17 intervenes to reinforce the connecting portion with the
Is formed. That is, the reinforce 17 and the closing front pillar panel 16 overlap the overlapping portion 25 (FIG. 7) of the front pillar 19 and the cant rail 20, and the overlapping portions 23 and 24 are formed. Therefore, it is difficult to weld the overlapped portions 23 and 24, and the welding strength tends to be insufficient. Therefore, it is necessary to perform special welding, and there is a problem that the welding efficiency is reduced and the cost is increased.

On the other hand, Japanese Patent Application Laid-Open No. 1-115780 discloses a vehicle body structure, which is disclosed in FIG. 3 and FIG.
For example, there is disclosed a three-piece mating structure of a joint portion between a rear roof rail portion and a front roof rail portion. There is no particular problem in welding because this part is three-piece alignment, but the front pillar part, roof pillar part, quarter pillar part, etc. are each divided, the welding work time is long, and the welding strength of the joint part is low. May be insufficient.

[0005] The present invention has been made in view of the above circumstances, and while maintaining sufficient rigidity required as a side panel, improvement of welding operation efficiency and improvement of welding reliability can be achieved, and An object of the present invention is to provide a cab side panel structure capable of reducing the number of press steps, reducing the cost of a press die, and improving the yield of pressed parts.

[0006]

According to the present invention, in order to achieve the above object, a pillar portion, a cant rail portion, a center pillar portion, and a rocker panel portion forming a contour around a side door are integrally formed. And a closing front pillar panel and a cant rail panel having an integrally formed structure which are welded to a part of the pillar portion of the side outer panel and a vehicle compartment side and an outside of the cant rail portion to form a closed cross section. It constitutes a side panel structure of the cab. Further, of the cantilever portions of the side outer panel, a cross-sectional shape of the cantilever portion behind the center pillar portion is made the same as a cross-sectional shape of the closing front pillar panel, and the rear portion of the cantilever portion behind the center pillar portion. The present invention is characterized in that only the cant rail panel is superposed and welded to the can rail portion.

The rigidity of the side outer panel is improved by making it integral. Further, since it is not a split type, welding of the joint portion is not required, so that the efficiency of welding work and the yield can be improved. The side panel structure is formed with high rigidity by connecting the closing front pillar panel and the cant rail panel to the integrally formed side outer panel from inside and outside to form a closed cross section of a three-piece structure. Further, unlike the prior art, there is no overlapped portion of four sheets, and reliable welding can be performed by a normal welding method. In addition, by forming the side panel structure into an integrally molded structure, the cost of the mold can be reduced. Furthermore, by making the cantilever portion on the rear side of the side outer panel the same shape as the closing front pillar panel, the closing front pillar panel in this part becomes unnecessary, and the yield of the used parts as it is without secondary processing of the side outer panel Can be improved.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the cab side panel structure of the present invention will be described below in detail with reference to the drawings. FIG.
FIG. 1 is a configuration diagram showing a schematic structure of components of a cab side panel structure of the present invention. The side panel structure includes a side outer panel 1 having an integrally molded structure, a closing front pillar panel 2, a cante rail panel 3, and reinforcement members 4 and 5, which are reinforcement members.

The side outer panel 1 comprises a pillar portion 6, a cantilever portion 7, a center pillar portion 8, a rocker panel portion 9, and the like, which are separately molded. As shown in FIG. 2, for convenience of explanation, the cantilever section 7 is provided with a front cantilever section 7a between the pillar section 6 and the center pillar section 8 and a rear cant rail section 7b behind the center pillar section 8. And divided into The closing front pillar panel 2 and the cant rail panel 3 are formed by welding the main part of the side outer panel 1 mainly to the upper side of the pillar part 6 and the cantilever part 7 inside and outside the cabin to form a closed cross section. Also, Reinforce 4
Is a reinforcing member housed in the closed cross section at a predetermined location of the can rail section 7, and the reinforce 5 reinforces the pillar section 6 of the side outer panel 1. Also,
The side outer panel 1, the closing front pillar panel 2, and the cant rail panel 3 are all formed of an integrally formed structure and are press-formed into a predetermined shape.

The side panel structure is not formed by welding the components in the state shown in FIG. 1 as it is, but is actually formed by welding the components having the shape shown in FIG. That is, the side outer panel 1 'actually used cuts the rear cantilever portion 7b of the side outer panel 1 having the shape shown in FIG. 1, and has a closing length substantially the same as that of the can outer rail portion 7 of the side outer panel 1 before cutting. Front pillar panel 2 and cant rail panel 3
And the cut side outer panel 1 'are welded to each other to form a closed section.

FIG. 3 is an enlarged sectional view taken along line AA in FIG. In this portion, the can front rail portion 7b of the side outer panel 1 'does not exist, so that only the closing front pillar panel 2 and the can front rail panel 3 are welded as shown. That is, the flange portions 12 and 13 of the closing front pillar panel 2 and the flange portions 10 and 11 of the cant rail panel 3 are brought into contact with each other and welded to each other to form a closed cross section.

FIG. 4 is a side view of the side outer panel 1 'of FIG.
4 shows an enlarged cross section taken along line -B. At this location, the closing front pillar panel 2 and the cant rail panel 3 are welded to the front cantilever portion 7a of the side outer panel 1 'to form a closed cross section. That is, the flange portions 12 and 13 of the closing front pillar panel 2 are overlapped with the flange portions 14 and 15 of the front cantilever portion 7a of the side outer panel 1 ', and the flange portions 10 and 11 of the cant rail panel 3 are further attached. The side outer panel 1 'overlaps the flange portions 14 and 15 of the front cantilever portion 7a on the vehicle outer side, and these flange portions 1
A predetermined closed cross section is formed by welding three pieces of 0, 14, 12 and the flange portions 11, 15, 13 together. As described above, a side panel structure having a highly rigid closed cross section is formed.

As described above, the side panel structure described with reference to FIGS. 2 to 4 is formed by cutting the portion of the rear cantilever portion 7b of the side outer panel 1 shown in FIG. There is also waste material. The side outer panel 1 formed in the shape shown in FIG. 1 is preferably a press mold having a structure shown in FIG. 1 as a molding die structure, and a side outer panel obtained by cutting a portion of the rear cantilever portion 7b. The structure has a problem in terms of balance with the rocker panel portion 9 and molding accuracy.

FIG. 5 shows another embodiment of the cab side panel structure of the present invention which has solved the above-mentioned problems. In this example, the press structure of the side outer panel 1 "is different from that shown in Fig. 1. That is, the cross sectional shape of the front cantilever portion 7a of the side outer panel 1" is the same as that described above, but the rear cante rail. The cross-sectional shape of the part 7b 'is different from that described above. That is, as shown in FIG. 6, the cross section of the rear cantilever portion 7b 'is formed to be substantially the same as the cross section of the closing front pillar panel 2. Accordingly, the cantilever portion 7 of the side outer panel 1 ″ has a shape that smoothly changes from the front cantilever portion 7a having the cross-sectional shape shown in FIG. 4 to the rear cantilever portion 7b ′ having the cross-sectional shape shown in FIG. Consist of things.

As shown in FIG. 5, the closing front pillar panel 2 extends from the upper end of the front pillar portion 6 to the position of the center pillar 8, and extends rearward from the center pillar 8. When divided from the rear closing front pillar panel 2b, the closing front pillar panel 2 of this example is used.
Is formed by removing the rear closing front pillar panel 2b. Therefore, the portion of the rear closing front pillar panel 2b must be cut. However, it is not necessary to cut and remove the rear closing front pillar panel 2b by previously forming the closing front pillar panel 2 except for the part corresponding to the rear closing front pillar panel 2b. That is, by forming the closing front pillar panel 2 using a molding die without the rear closing front pillar panel 2b, the rear cantilever section 7 is formed.
The waste of cutting and discarding b 'is eliminated.

FIG. 6 is an enlarged view taken along line CC of FIG. 5, and shows a side outer panel 1 ″ having a cross-sectional shape substantially the same as the cross-sectional shape of the closing front pillar panel 2.
Flange portions 14 and 15 of rear cantilever portion 7b '
And the flange portions 10 and 11 of the cantilever panel 3 are overlapped and welded to form a highly rigid side panel structure. These are two-piece alignment and are easily and reliably welded. As described above, the size of the closing front pillar panel 2 can be reduced, and the rear closing front pillar panel 2b is not required, so that the die cost can be reduced and the yield can be improved.

In the above description, the shapes of the side outer panels 1, 1 ', 1 "are shown in the figure, and the shapes of the closing front pillar panel 2 and the cant rail panel 3 are shown in the drawings. It is not limited.

[0018]

1) According to the cab side panel structure according to the first aspect of the present invention, the side outer panel is of an integrally molded structure, and the same integrally molded structure is provided on the vehicle interior side and the vehicle exterior side. In order to form a closed section by welding the front pillar panel and the cant rail panel,
A highly rigid side panel structure can be formed. In addition, because of the integrally formed structure, the efficiency of welding work and the reliability of welding are improved, and the yield of parts is also improved. 2) According to the cab side panel structure according to claim 2 of the present invention, the side outer panel uses an integrally molded product as it is, and there is no waste of the molded product such as partial cutting or disposal, and the closing front pillar panel. Is also shortened, so that the mold cost and the number of sheet metal work steps are reduced, resulting in cost reduction.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a schematic structure of components of a side panel structure of the present invention.

FIG. 2 is a schematic configuration diagram illustrating an embodiment of a side panel structure of the present invention.

FIG. 3 is an enlarged sectional view taken along line AA of FIG. 2;

FIG. 4 is an enlarged sectional view taken along line BB of FIG. 2;

FIG. 5 is a schematic configuration diagram illustrating another embodiment of the side panel structure of the present invention.

FIG. 6 is an enlarged sectional view taken along line CC of FIG. 5;

FIG. 7 is a schematic configuration diagram of a conventional side panel structure.

FIG. 8 is an enlarged sectional view taken along line DD of FIG. 7;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 side outer panel 1 ′ side outer panel 1 ″ side outer panel 2 closing front pillar panel 2 a front closing front pillar panel 2 b rear closing front pillar panel 3 cant rail panel 4 reinforce 5 reinforce 6 pillar 7 cant rail 7 a front cant rail 7 b Rear cantilever section 7b 'Rear cant rail section 8 Center pillar section 9 Rocker panel section 10 Flange section 11 Flange section 12 Flange section 13 Flange section 14 Flange section 15 Flange section

Claims (2)

[Claims] A side outer panel formed by integrally forming a pillar portion, a cant rail portion, a center pillar portion, and a rocker panel portion forming a contour around a side door;
A part of the pillar portion of the side outer panel and a closing front pillar panel and a cant rail panel having an integrally formed structure which are welded to the vehicle interior side and the vehicle exterior side of the cant rail portion to form a closed cross section. Cab side panel structure. 2. A cross-sectional shape of the cantilever portion of the side outer panel, which is behind the center pillar portion, is the same as a cross-sectional shape of the closing front pillar panel. 2. The cab side panel structure according to claim 1, wherein only the cant rail panel is overlapped and welded to the rear cantilever portion. 3.