JPH0425427Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to the improvement of the front structure of a vehicle body, particularly the connection structure of each member in the vicinity of the cowl.

(Prior Art) Recent passenger cars use a vehicle body with an integral structure in which a body and a chassis frame are integrally formed by joining thin plates. This type of integrated structure has the characteristics of being light in weight, high rigidity, and being able to lower the cabin floor surface, but it also reduces stress by propagating external forces applied to load application points throughout the vehicle body. It is important to make these uniform in order to improve the rigidity of the vehicle body. Therefore, it is necessary to provide a strong structure to the parts where the shape of the vehicle body changes and the parts around large openings. An example of such a portion is a cowl portion 3 that forms a boundary between the front vehicle body 1 and the passenger compartment 2, as shown in FIG. This cowl part 3 is attached to the left and right front pillars 4,
4 is combined to form the lower peripheral edge of the windshield, and serves to bear the stress applied to the vehicle body and improve the torsional rigidity of the vehicle body. A steering column is attached to the cowl portion 3, contributing to safety in the event of a collision and suppression of steering resonance during high-speed driving.

On the other hand, the front suspension of current passenger cars is of the strut type, which has the characteristics of a simple structure, light weight, and space saving, and a large vertical stroke. The suspension towers 5 and 5 are the cowl part 3 for
Suspension tower 5,5
A suspension mounting portion 6 is provided at the upper end of the holder. Therefore, it is necessary to support the front wheel reaction force acting on the suspension mounting part, and the cowl part 3
It is increasingly desired to improve the rigidity of the cowl portion 3 and the joint portion between the cowl portion 3 and the suspension tower 5.

Therefore, the present applicant proposed a structure for increasing the strength of the corner portion adjacent to the front pillar 4 on the side of the cowl portion 3, as disclosed in Japanese Utility Model Application Publication No. 59-157975.

By the way, as shown in the above-mentioned publication, the joint between the cowl part 3 and the front pillar 4 and the joint between the cowl part 3 and the suspension tower 5 have conventionally had a closed cross-sectional structure.

That is, as shown in FIG. 7, the front pillars 4, 4 form a closed cross section 9 with the outer panel 7 and the inner panel 8, and the front pillars 4, 4 extend in the vehicle width direction between the pillars 4, 4, and are partitioned from the passenger compartment 2. A vertical wall portion 10a of the dart upper panel 10 (provided above the dart lower panel 11) forming the cowl portion 3 is joined to the front end of the front pillar 4, and this vertical wall portion 10a has a cross-sectional shape. The rear ends of the cowl plate upper 12 and the wheel apron reinforcement 13, which are formed into a "shaped" shape, are joined to each other. , a closed section 14 is formed together with a horizontal wall section 10b which is bent from the vertical wall section 10a of the dash upper panel 10 and extends forward, and the front end of this closed section 14 is connected to the suspension tower 5, and the wheel apron rain is connected to the suspension tower 5. A cowl side panel 15 is joined below the reinforcement 13 to ensure the strength of the front side portion of the vehicle body.

However, it was necessary to further improve the rigidity of the corner portion on the side of the cowl portion 3 that contacts the front pillar 4.

(Purpose of the invention) In view of the above-mentioned circumstances, the present invention is an automobile front body structure in which the joints of the cowl parts in contact with the front pillars are strengthened to increase the rigidity of the car body, thereby improving the car body vibration characteristics. The purpose is to provide

(Structure of the invention) In order to achieve the above-mentioned object, the present invention provides a windshield mount consisting of a mount member upper and a mount member lower that are joined to each other to form a second closed section extending in the vehicle width direction. The member connects the closed section to the first pillar of the front pillar.
A cowl is provided in such a manner that it is connected to a closed cross section of the cowl, and the end of the windshield mount member forms a third closed cross section that extends in the longitudinal direction of the vehicle body together with the dart upper panel and the wheel apron reinforcement. It is joined to the plate top. In this case, the end of the windshield mount member is joined to the cowl plate upper in such a manner that a fourth closed cross section, which is an extension of the second closed cross section, is formed on the upper surface of the cowl plate upper. , the second closed cross section and the third closed cross section are connected via the fourth closed cross section.

(Effect of the invention) According to the invention, the windshield mount member has a second closed section extending in the vehicle width direction formed by the mount member upper and the mount member lower, and the cowl panel and the dash. A third closed section extending in the longitudinal direction of the vehicle body formed by the upper panel and the wheel apron reinforcement is an extension of the second closed section formed on the upper surface of the cowl panel upper. Since the first closed cross section formed by the front pillar and the second and third closed cross sections are connected to each other through the fourth closed cross section, the torsional rigidity of the cowl portion is increased. can be improved.

(Embodiments) Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1, front pillars 4, 4 each having a closed cross section 9 are provided upright on the left and right sides of the front part of the vehicle body, as in FIG. A dart upper panel 10 extending in the vehicle width direction is disposed between them.
The needle upper panel 10 has a vertical wall portion 10a.
and a horizontal wall portion 10b bent from the lower end of the vertical wall portion 10a and extending forward, and the vertical wall portion 10a is joined to the front end of the front pillar 4 as in the case of FIG. A windshield mount member 21 for attaching a windshield 20 is bonded to the upper side of the vertical wall portion 10a of the dash upper panel 10. This windshield mount member 21 includes a mount member upper 23 and a mount member lower 2 that are joined to each other to form a closed cross section 22 extending in the vehicle width direction.
4, and both ends thereof are joined to the front pillar 4 in such a manner that the closed section 22 is connected to the closed section 9 of the front pillar 4.

As is clear from FIGS. 2 and 3, a cowl plate upper 12 is disposed above the left and right end portions of the dash upper panel 10 and extends in the longitudinal direction of the vehicle body. This cowl plate upper 12 has a side surface portion 1 whose lower end portion is joined to the horizontal wall portion 10b of the dash upper panel 10.
2a and the upper surface portion 12b have a cross-sectional shape. The upper end portion of the wheel apron reinforcement 13 is joined to the side end portion of the upper surface portion 12b.
The side end portion of the horizontal wall portion 10b of 0 is inclined downward, and an inclined flange 26 formed at the upper end of the cowl side panel 15 and inclined inward is joined to this inclined flange 25. The joint portion of the inclined flanges 25 and 26 is provided inside the wheel apron reinforcement 13, and
The lower end of the vertical wall surface 27 of the cowl side panel 15
is joined on top. In this way, the dash upper panel 10, the cowl plate upper 1
2. Wheel apron reinforcement 13
The cowl side panel 15 forms a closed section 14 that extends from the vertical wall portion 10a of the dash upper panel 10 toward the front of the vehicle body and reaches the suspension tower 5.

In the case of the configuration shown in FIGS. 1 to 3, the side end of the horizontal wall 10b of the dart upper panel 10 and the upper end of the cowl side panel 15 are inclined on the inside of the wheel apron reinforcement 13. They are joined by flanges 25 and 26, and as shown in FIG.
7 may be used.

On the other hand, the end portion of the windshield mount member 21, which forms a closed cross section 22 extending in the vehicle width direction between the mount member upper 23 and the mount member lower 24, is joined to the front pillar 4 and is connected to the front pillar 4. As is clear from FIG. 2, it is also joined to the cowl plate upper 12. In this case, the side end of the mount member lower 24 of the windshield mount member 21 is joined to the side surface 12a of the cowl plate upper 12, and the side end of the mount member upper 23 of the windshield mount member 21 is joined to the cowl plate upper. The mount member upper 23 is joined to the upper surface portion 12b of the par 12, and the closed cross section 30 of the closed cross section 22 extending in the vehicle width direction is connected to the mount member upper 23 and the cowl plate upper 12.
The cowl plate upper 12 is joined to the upper surface portion 12b in a manner formed between the upper surface portion 12b and the closed cross section 22 and the aforementioned closed cross section 14.
are connected via the closed cross section 30, and therefore,
The closed cross section 9 formed by the front pillar 4 and the closed cross sections 22 and 14 are connected to each other, thereby further increasing the torsional rigidity of the cowl portion 3. Further, the front end of the mount member upper 23 is joined to the rear end of a reinforcement 31 installed between the left and right cowl plate uppers 12, 12. This reinforcement 31
The front end of the cowl front panel 32 is connected to the upper end of the cowl front panel 32, which has both side ends joined between the left and right cowl plate uppers 12, 12 and whose lower end is joined to the horizontal wall 10b of the dash upper panel 10. It is joined. Incidentally, as shown in FIG. 5, the mount member lower 24 may be joined together with the mount member upper 23 onto the upper surface portion 12b of the cowl plate upper 12.

As is clear from the above description, according to the present invention, the rigidity of the vehicle body can be improved by increasing the strength of the cowl portion.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the vehicle body structure according to the present invention;
Figures 2 and 3 are cross-sectional views taken along lines - and - in Figure 1, Figure 4 is a cross-sectional view showing a modification of Figure 3, and Figure 5 is a cross-sectional view showing the table shape of Figure 2. 6 is a perspective view of the front body structure of an automobile to which the present invention is applied, and FIGS. 7 and 8 show the conventional front body structure along lines - and - in FIG. 6. FIG. 3...Cowl part, 4...Front pillar, 5...
...Suspension tower, 10...Dash upper panel, 12...Cowl plate upper panel,
13...Wheel apron reinforcement, 14...Closed section, 15...Cowl side panel, 21...Windshield mount member, 2
2...Closed section, 23...Mount member upper, 24...Mount member lower, 30...Closed section, 32...Cowl front panel.

Claims (1)

[Scope of Claim for Utility Model Registration] A darts upper that extends in the vehicle width direction between the left and right front pillars 4, 4 forming first closed sections 9, 9, respectively, and forming a cowl section partitioned from the passenger compartment. It consists of a panel 10, a mount member upper 23 and a mount member lower 24 that are joined to each other to form a second closed section 22 extending in the vehicle width direction, and both ends thereof are connected to the left and right front pillars 4, 4. Second
a windshield mount member 21 connected to the first closed section 9, 9 in such a manner as to connect the closed section 22 thereof to the first closed section 9, 9; and a wheel located outside the dash upper panel 10 and extending in the longitudinal direction of the vehicle body. an apron reinforcement 13; a side surface 12a whose lower end is joined to the horizontal wall 10b of the dash upper panel 10; and an upper surface whose side end is joined to the upper end of the wheel apron reinforcement 13. a cowl plate upper 12 having a Γ-shaped cross-sectional shape with a portion 12b and forming a third closed cross section 14 extending in the longitudinal direction of the vehicle body together with the dash upper panel 10 and the wheel apron reinforcement 13; The end of the windshield mount member 21 connects the cowl plate upper 12 with a fourth closed section 30 that is an extension of the second closed section 22 formed by the windshield mount member 21. It is joined to the cowl plate upper 12 in a manner formed on the upper surface, and the second closed section 22 and the third closed section 14 are connected via the fourth closed section 30. A front body structure of an automobile characterized by: