JPH0747977A - Front skeleton structure of car body - Google Patents

Abstract

PURPOSE:To provide a front skeleton structure of a car body that is able to do the after-setting of an outrigger and to position an inner part of this outrigger at the front side to the full. CONSTITUTION:This skeleton structure is made up of the following procedures that one piece part 15a of a section L-shaped bracket 15 is connected to the sidepiece of a closing plate 12, and an inside end 18a of a vertical part 18 of an outrigger 16 is connected to the other piece part 15b of the bracket 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a front skeleton structure of a vehicle body.

[0002]

2. Description of the Related Art As a conventional front skeleton structure of a vehicle body, there is one shown in FIGS. 10 to 12 (for a similar structure, see Japanese Utility Model Laid-Open No. 59-142179). In the following description, A indicates the front, B indicates the rear, C indicates the outer side (with respect to the vehicle width center), and D indicates the inner side (vehicle width center side).

Reference numeral 1 is a front side member, which is provided on each of the left and right sides of the vehicle body along the front-rear direction (however, the figure shows only the left side member). Each of the front side members 1 has a cross-sectional shape in which the outside (in the left and right outside with respect to the vehicle width center) is opened, an upward flange 1a is formed at the upper end, and an outward flange 1b is formed at the lower end. Has been formed.

A closing plate 2 has flanges 2a and 2b corresponding to the flanges 1a and 1b of the front side member 1 at the upper end thereof, and the flanges 2a and 2b are provided on the front side member 1 side. A skeleton member 3 having a closed cross section is formed by connecting to 1a and 1b.

A reinforcing plate 4 having an L-shaped cross section is provided in the skeleton member 3. The reinforcing plate 4 has one piece joined to the inner surface of the front side member 1 and the other piece joined to the bottom surface of the front side member 1 to reinforce the skeleton member 3. A reinforcing patch 5 having a U-shaped cross section is also joined to the inner surface of the closing plate 2.

Next, an inner flange 8a of an outrigger 8 including a horizontal portion 6 and a vertical portion 7 is joined to the side surface of the closing plate 2. This outrigger 8
Is connected to a side sill (not shown) having a closed cross-section structure outside the skeleton member 3, and the outrigger 8 connects the skeletal member 3 and the side sill (not shown) to the vehicle body. It is intended to increase the overall rigidity of the.

[0007]

However, in such a conventional technique, the outrigger 8 cannot be attached after the skeleton member 3 is assembled due to the structure. That is, even if the outrigger 8 is to be retrofitted after the skeleton member 3 is assembled, the inner flange 8 of the outrigger 8 is
Since a is facing forward, the tip of the spot welding gun S inserted from the rear side of the skeleton member 3 interferes with the vertical portion 7 of the outrigger 8 and does not reach the inner flange 8a. It must be joined to the closing plate 2 in advance. Therefore, since the outrigger 8 which is such a large component must be attached to the closing plate 2 in advance, the handling of the closing plate 2 is troublesome, and the closing plate 2 with the outrigger 8 is joined to the front side member 1. Workability also deteriorates.

Further, in the case of this conventional structure, since the spot welding gun S cannot be inserted into the skeleton member 3 due to the outrigger 8, the L-shaped reinforcing plate 4 provided in the skeleton member 3 is unavoidable. It is attached to the inner corner of the. In order to increase the rigidity of the entire skeleton member 3 by the reinforcing plate 4, originally, the reinforcing plate 4 is as shown by an imaginary line in FIG.
It is desired to join the closing plate 2 and the front side member 1 to each other by joining to the outer corner of the skeleton member 3, but as described above, the spot welding gun S cannot be inserted in front of the outrigger 8, so that reinforcement is required. Such an advantageous joining structure of the plate 4 cannot be adopted conventionally. Further, since such a structure advantageous in strength cannot be obtained, an additional component such as the patch 5 for reinforcement is also required, resulting in an increase in the number of components and the number of working steps.

In addition, as the outrigger 8, in order to counteract the twisting force applied from the outer flange 8b, the inner flange 8a is originally as shown by an imaginary line in FIG.
Is desired to be located in front of the outer flange 8b. However, since the outrigger 8 has an overall shape including the horizontal portion 6 and the vertical portion 7 and the inner flange 8a is present at the inner end of the vertical portion 7, the inner flange 8a of the vertical portion 7 remains formed. In this state, there is a limit to the amount by which the inner portion of the vertical portion 7 can be squeezed to the front side, and in the end, the inner flange 8a cannot be positioned sufficiently to the front side.

The present invention was made by paying attention to such a conventional technique, and it is possible to retrofit the outrigger and to position the inner part of the outrigger sufficiently to the front side. Is provided.

[0011]

In order to achieve the above-mentioned object, the front skeleton structure of a vehicle body according to the present invention has a closing plate at the opening edge of a generally U-shaped front side member which is open outward. Connected to form a skeleton member having a closed cross section, a reinforcing plate having an L-shaped cross section joined to the bottom surface of the front side member and the closing plate is provided in the skeleton member, and an extension member is connected to the lower side of the skeleton member. And a front skeleton structure of a vehicle body in which an outrigger including a horizontal portion and a vertical portion is connected to the closing plate in an outward state, and one piece of a bracket having an L-shaped cross section is connected to a side surface of the closing plate. The inner end of the vertical portion of the outrigger is connected to the other piece.

[0012]

According to the vehicle body front skeleton structure according to the present invention,
Since one piece of the bracket having an L-shaped cross section is connected to the side surface of the closing plate and the outrigger is connected to the other side of the bracket, only the bracket is previously connected to the closing plate, and the skeleton member is assembled. You can install the outrigger at the last stage. At the first stage, since only the bracket is attached to the closing plate, the closing plate can be easily handled and the workability in assembling the skeleton member is improved.

Further, since only the bracket is attached to the closing plate and the spot welding gun can be sufficiently inserted into the frame member, it is possible to connect the reinforcing plate to the outer corner of the frame member. Becomes

Further, the presence of the bracket eliminates the need for an inner flange for joining at the inner end of the outrigger, so that the inner end of the outrigger can be formed sufficiently in front of the outer end and the outrigger can be twisted. The shape becomes highly rigid.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to FIGS.
It will be described based on.

Hereinafter, each member will be described in order. Front side member 9: The front side member 9 is
A vertical flange 9a is formed on the upper side, and a vertical flange 9b is formed on the lower side from the middle part to the vicinity of the rear end.
Further, an inclined flange 9c joined to a dash lower panel (not shown) is formed at a side end portion corresponding to the rear end opening (finally, the opening formed at the rearmost portion when the skeleton member 11 is assembled). Has been done. A semicircular cutout 9d for supporting a suspension bolt (not shown) is formed near the rear end of the bottom surface. Further, the rearmost end of the bottom surface of the front side member 1 is a rear end flange 9e.

Closing plate 12: An outward horizontal flange 12a is formed in the lower end of the closing plate 12 in a range corresponding to a portion other than the lower vertical flange 9b of the front side member 9. An inclined flange 12b joined to a dash lower panel (not shown) is formed at a terminal portion corresponding to the rear end opening 10 of the closing plate 12. The closing plate 12 and the front side member 9 form a skeleton member 11 having a closed cross section.

Reinforcing plate 13: This reinforcing plate 13
The main part has an L-shaped cross section so as to be joined to the bottom surface of the front side member 9 and the inner surface of the closing plate 12, and the front side member 9 is provided at the rear end thereof.
It has a rear end flange 13a joined to the rear end flange 9e. An inclined flange 13b joined to the inclined flange 12b of the closing plate 12 is also partially formed at the rear end of the vertical portion of the reinforcing plate 13. Furthermore, inside the reinforcing plate 13, ribs 13c for increasing the rigidity are also formed continuously along the longitudinal direction.

Extension member 14: The extension member 14 is connected to the lower side of the skeleton member 11. The rear side has an inverted hat cross-section having horizontal flanges 14a at both ends so as to be joined to the lower surface of the floor panel (not shown). The front end portions of both horizontal flanges 14a are partially inclined so as to be joined to the inclined flanges 9c and 12b. The inner side wall 14b extends to the front end, but the outer side wall 14c does not extend to the front end. Instead, a downward vertical flange 14d is formed on the front side of the outer side wall 14c. Further, a circular hole 14e corresponding to the cutout portion 9d is provided on the bottom surface of the extension member 14.

Bracket 15: The bracket 15 is for attaching an outrigger 16 described later to the closing plate 12, and has an L-shaped cross section including one piece portion 15a and another piece portion 15b. Further, it is formed of a large-thickness panel to reinforce the closing plate 12 and surely receive the input from the outrigger 16.

Outrigger 16: The outrigger 16 is
It has an L-shaped cross section consisting of a horizontal portion 17 and a vertical portion 18,
Inside the outrigger 16, an inner flange 16a is formed only on the horizontal portion 17 thereof, and is not formed on the inner end 18a of the vertical portion 18. The vertical portion 18 is in a state in which the inner end 18a side is inclined to the front side, and the inner end 18a is positioned sufficiently forward of the outer flange 16b. The reason why it can be molded in this way is that the inner flange 16a does not exist at the inner end 18a. That is, since it is not necessary to form the inner flange 16a at the same time, it is possible to sufficiently form the inner end 18a to the front side. The outer flange 16b is continuously formed from the vertical portion 18 to a part of the horizontal portion 17.

Assembly Procedure: Next, the assembly procedure of these members will be described.

A) Closing plate 12 + bracket
G 15: First, one piece 15 a of the bracket 15 is welded to the closing plate 12 in advance. This welding is easy to do with a spot welding gun as there is nothing in the way.

B) Front side member 9 + extension member
14: The inner side wall 14b of the extension member 14 is joined to the inner side surface of the front side member 9, and the inclined flange 9c inside the front side member 9 and the inclined front end portion of the horizontal flange 14a inside the extension member 14 are joined together. To do. Further, the upper surface of the front end portion of the extension member 14 is joined to the lower surface of the front end portion of the front side member 9. The joining work of these two is
This is easy because it is performed before the front side member 9 and the closing plate 12 are joined.

C) A + B: The bracket 1 is attached to the front side member 9 (B) to which the extension member 14 is attached.
The closing plate (5 above) to which 5 is attached is joined. That is, the upper end of the closing plate 12 is joined to the upper vertical flange 9a of the front side member 9, and the horizontal flange 1 on the front side of the closing plate 12 is joined.
2a is joined to the corresponding portion of the front end of the bottom surface of the extension member 14,
The lower end of the rear side of the closing plate 12 is extended member 1
4 to the downward facing vertical flanges 14d. Further, a part of the inclined flange 12b of the closing plate 12 is joined to the inclined front end portion of the horizontal flange 14a inside the extension member 14. The joining of A and B is
Since the portions protruding outward from each other are joined together, the welding operation is easy.

D) The C + Reinforcement Plate 13: Next, the reinforcement plate 13 is inserted from the rear end opening 10 of the skeleton member 11, the horizontal portion of the reinforcement plate 13 is joined to the bottom surface of the front side member 9, and the vertical portion is attached. It is joined to the inner surface of the closing plate 12. As shown in FIG. 9, since the outrigger 16 is not yet attached to the bracket 15, the spot welding gun S can be sufficiently inserted to the front side of the bracket 15, and it is possible to insert the spot welding gun S more than the bracket 15 which cannot be joined conventionally. Reinforcement plate 13 in the front part
And the closing plate 12 can be joined.

E) The bracket 15 of D and the outrigger
-16: While joining the inner end 18a of the vertical portion 18 of the outrigger 16 to the other piece 15b of the bracket 15,
The inner flange 16 a of the horizontal portion 17 is joined to the side surface of the closing plate 12. The attachment of the outrigger 16 completes all the assembly work.

Next, the advantages of the structure of this embodiment will be described. According to the structure of this embodiment, the reinforcing plate 13 is attached to the outer corner of the skeleton member 11, and the bottom surface of the front side member 9 and the inner surface of the closing plate 12 are connected by the reinforcing plate 13. The overall rigidity of the skeleton member 11 is improved as compared with the conventional one. Therefore, the input F applied from the outrigger 16 toward the inside can be sufficiently counteracted, and the conventionally provided reinforcing patch or the like is unnecessary.

At the first stage, the closing plate 12
Since the outrigger 16 is not attached to the closing plate 12, the closing plate 12 can be easily handled and the assembling workability is improved.

Since the inner end 18a of the outrigger 16 is located in front of the outer flange 16b, even if the input F from the outer flange 16b is applied in the twisting direction, it can sufficiently oppose it.

Since the outrigger 16 is connected to the closing plate 12 through the bracket 15, it is not necessary to increase the plate thickness of the outrigger 16 in order to increase the resistance to the input F. The resistance to the input F can be increased only by increasing the plate thickness of the bracket 15 that is intensively applied.

In the above description, assembling procedures A to E were described as an example. However, the bracket 15 is first joined to the closing plate 12, and the joining work by the spot welding gun S is completed within the closed cross-section structure. The procedure is not limited as long as the outrigger 16 is joined to the bracket 15 after the operation.

[0033]

The front skeleton structure of the vehicle body according to the present invention is
With the contents as described above, one piece of the bracket having the L-shaped cross section is connected to the side surface of the closing plate, and the outrigger is connected to the other piece of the bracket. You can attach out only and attach the outrigger at the last stage when the skeleton member is assembled. At the first stage, since the bracket is simply attached to the closing plate, the closing plate can be easily handled and the workability in assembling the skeleton member is improved.

Further, since only the bracket is attached to the closing plate, the spot welding gun can be sufficiently inserted into the skeleton member, and the reinforcing plate can be connected to the outer corner of the skeleton member. .

Further, since the inner edge of the outrigger does not need an inner flange for joining due to the existence of the bracket, it is possible to press the inner edge of the outrigger sufficiently to the front side of the outer edge and twist the outrigger. The shape becomes highly rigid.

[Brief description of drawings]

FIG. 1 is a perspective view showing a front skeleton structure of a vehicle body according to an embodiment of the present invention.

2 is a front view of the structure of FIG. 1. FIG.

FIG. 3 is a plan view of the structure of FIG.

FIG. 4 is a side view of the structure of FIG.

5 is a cross-sectional view taken along the line SA-SA shown in FIG.

6 is a cross-sectional view taken along the line SB-SB shown in FIG.

FIG. 7 is a cross-sectional view taken along the line SC-SC shown in FIG.

FIG. 8 is an exploded perspective view of the structure of FIG.

9 is a cross-sectional view of the structure of FIG.

FIG. 10 is a perspective view showing a front skeleton structure of a conventional vehicle body.

11 is a cross-sectional view taken along the line SD-SD shown by the arrow in FIG.

12 is a cross-sectional view taken along the line SE-SE shown in FIG.

[Explanation of symbols]

 9 Front Side Member 11 Skeleton Member 12 Closing Plate 13 Reinforcement Plate 14 Extension Member 15 Bracket 15a One Piece 15b Other One Piece 16 Outrigger 17 Horizontal Part 18 Vertical Part 18a Inner End of Vertical Part

Claims (1)

[Claims] 1. A skeleton member having a closed cross section is formed by connecting a closing plate to an opening edge of a generally U-shaped front side member having an outward opening, and a bottom surface of the front side member and the closing plate are formed in the skeleton member. A reinforcing plate having an L-shaped cross section joined to the front side of the vehicle body, an extension member connected to the lower side of the skeleton member, and an outrigger including a horizontal portion and a vertical portion connected to the closing plate in an outward state. A front skeleton of a vehicle body having a skeletal structure, wherein one side part of a bracket having an L-shaped cross section is connected to a side surface of the closing plate, and an inner end of a vertical part of an outrigger is connected to the other side part of the bracket. Construction.