JP2896715B2 - Lower body structure of car - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lower body structure of an automobile,
In particular, the present invention relates to a vehicle body structure having a deck portion that is open toward the passenger compartment near a lower portion of a dash lower panel.

[0002]

2. Description of the Related Art As a member constituting a lower part of a cabin of an automobile body, a dash lower panel constituting a lower front part of the cabin (including a part of a front part of the cabin floor) and a floor part of the cabin are formed. There are floor panels. 2. Description of the Related Art Conventionally, there is a dash lower panel or a floor panel in which a hollow deck portion bulging into a vehicle compartment is formed, and the inside of the deck portion is used as a storage space.

As one mode of such a vehicle body structure, for example, as disclosed in Japanese Patent Application Laid-Open No. 63-240480, a deck portion bulging toward the passenger compartment is formed on a floor panel, and the interior of the deck portion is provided with an engine. It is known that the storage space is used as a part of a storage space, and an opening portion that can be opened and closed is provided in a deck portion so that maintenance and inspection of an engine can be performed from a vehicle compartment side.

[0004]

In the above-described vehicle body structure having a deck portion swelling toward the passenger compartment, an opening is provided in the deck portion so that the storage space in the deck portion can be increased from the passenger compartment side. Make it available.

[0005] By the way, it is conceivable that the rigidity of the deck portion itself is weakened when the opening portion is provided in the deck portion as described above. Even when the deck is provided with an opening so that the deck is not deformed as much as possible even when a strong impact is applied to the vehicle body, it is desirable that the rigidity of the deck be maintained high.

In view of the above problems, the present invention makes it possible to maintain a high rigidity of a deck portion even if an opening is provided in a hollow deck portion formed on a dash lower panel or a floor panel and protruding toward the passenger compartment. It is an object of the present invention to provide a lower body structure of an automobile.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a lower body structure of a vehicle according to the present invention comprises a dash lower panel constituting a lower front part of a vehicle body of a vehicle body, and a vehicle fixed to a lower edge of the dash lower panel. A floor panel forming a front part of a room floor surface; and a front frame forming a frame of the floor panel, wherein the dash lower panel or the floor panel bulges toward a passenger compartment having an opening facing the passenger compartment. In the lower body structure of an automobile having a hollow deck portion, a reinforcement for reinforcing the opening is provided around the periphery of the opening of the deck portion, and the reinforcement is provided around the opening. Are fixed directly to the front frame or indirectly via another member.

[0008]

As described above, in the lower body structure of an automobile according to the present invention, the reinforcement provided on the periphery of the opening provided in the hollow deck portion bulging toward the cabin strengthens the opening. This reinforcement is fixed to the front frame while increasing the rigidity of the deck, so even if the deck receives a strong impact through the vehicle body, such as during an automobile collision, the front frame supports the impact, and the deck Deformation and displacement can be effectively suppressed.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a lower vehicle body structure of an automobile according to the present invention.

FIG. 1 is a perspective view showing a deck portion provided in a lower body structure of an automobile according to an embodiment of the present invention.
2 is an overall perspective view, FIG. 2B is a partially enlarged view of FIG.
1 is a cross-sectional view of the deck portion, FIG. 1 (a) is a cross-sectional view taken along the line IIa-IIa in FIG. 1, and FIG.
FIG. 3 (c) is a sectional view taken along the line IIc-IIc in FIG. 1, FIG. 3 is a perspective view showing components of the deck portion, and FIG. 4 is a vehicle according to an embodiment of the present invention. FIG. 2 is a perspective view showing the entire configuration of the lower vehicle body structure of FIG.

As shown in FIG. 4, the lower vehicle body structure of the vehicle according to the present embodiment includes a dash lower panel 2 forming a lower part of the front of a vehicle body of a vehicle body 1, a floor panel 3 forming a front part of a vehicle floor, and a floor. And a front frame 4 extending in the front-rear direction of the vehicle body and constituting a skeleton of the panel 3.

The dash lower panel 2 and the floor panel 3 are welded to each other such that the lower edges of the dash lower panel 2 are vertically overlapped with each other along a joining line 2a extending in the vehicle width direction. On the upper part of the frame 4, a front up frame extending in the front-rear direction of the vehicle body
4 a is welded along the front frame 4. A hollow engine deck portion 5 bulging toward the passenger compartment is formed substantially at the center of the dash lower panel in the vehicle width direction. The engine deck portion 5 has an opening 6 facing rearward in the passenger compartment. I have.

As shown in FIG. 3, an opening 7 is formed substantially at the center of the dash lower panel 2, and the engine deck 5 is welded to a peripheral edge 7a of the opening 7. A part of the engine installed on the back side of the dash lower panel 2 is housed in the engine deck 5, and the engine is inspected and maintained from the passenger compartment side by an opening 6 provided in the engine deck 5. be able to.

As shown in FIGS. 1 and 3, a dash lower panel 2 is provided on the periphery 7a of the opening 7 of the dash lower panel 2.
A dash lower reinforcement 8 is welded from the back side of the engine deck 5 and the periphery of the opening 6 of the engine deck 5.
6a, engine deck reinforcements 9a and 9b are welded from the back side of the engine deck portion 5, respectively. Also, each reinforcement 8, 9a, 9b is shown in FIG.
They are welded to each other as shown in FIG. And FIG.
As shown in (a) to (c), each reinforcement 8,
9a and 9b form a closed cross section with the opening edge 6a of the engine deck 5 or the opening edge 7a of the dash lower panel 2, respectively. Also, as shown in FIG. 1 (a), the engine deck reinforcement 9b includes a front up frame 4a.
Is welded to.

With the above construction, the opening portions 6a and 7a of the engine deck portion 5 are reinforced by the respective reinforcements 8, 9a and 9b, and are fixed to the front frame 4 via the front up frame 4a. , Its rigidity is increased.

Although the lower vehicle body structure of the vehicle according to the present invention has been described based on one embodiment, the lower vehicle body structure of the vehicle according to the present invention is not limited to this embodiment. For example, in the above-described embodiment, the engine deck 5 for accommodating a part of the engine has been described as the deck, but the deck of the present invention is not limited to the one accommodating the engine. A cover for opening and closing the opening may be arbitrarily attached to the opening provided in the deck.

In the above-described embodiment, the engine deck 5 is formed on the dash lower panel 2. However, the deck may be formed on the floor panel 3 or may be formed on the dash lower panel 2 and the floor panel 3. Even if
Further, it may be formed over the dash lower panel 2 and the floor panel 3.

In the above embodiment, each of the reinforcements 8, 9a, 9b and the engine deck 5 are welded. However, they can be fixed to each other by other methods such as bolting. The method can be based on other methods that do not constitute a closed section.

[0019]

According to the lower vehicle body structure of the automobile according to the present invention, the opening is formed around the periphery of the opening provided in the hollow deck formed on the dash lower panel or the floor panel and protruding toward the cabin. Reinforcing reinforcement is installed around the front frame, and the reinforcement is fixed to the front frame. Since the frame supports and can suppress deformation and displacement of the deck portion, the rigidity of the deck portion can be maintained high even if an opening is provided in the deck portion.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a deck portion provided in a lower body structure of an automobile according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a deck portion provided in a lower body structure of an automobile according to an embodiment of the present invention.

FIG. 3 is a perspective view showing constituent members of a deck portion provided in a lower body structure of an automobile according to an embodiment of the present invention.

FIG. 4 is a perspective view showing the entire configuration of a lower body structure of an automobile according to one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Car body 2 Dash lower panel 3 Floor panel 4 Front frame 5 Deck part 6,7 Opening 6a, 7a Opening periphery 8,9a, 9b Reinforcement

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-240480 (JP, A) JP-A-59-149401 (JP, U) JP-A-56-3077 (JP, U) JP-A-4-30 86586 (JP, U) Actually open 63-155780 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) B62D 25/08 B62D 25/20

Claims (1)

(57) [Claims] 1. A dash lower panel forming a lower part of a front surface of a vehicle body of a vehicle body, a floor panel fixed to a lower edge portion of the dash lower panel to form a front part of a vehicle floor, and a front frame forming a framework of the floor panel. In the lower body structure of an automobile, wherein the dash lower panel or the floor panel is formed with a hollow deck portion bulging toward the passenger compartment having an opening facing the passenger compartment side, A lower vehicle body structure for an automobile, wherein a reinforcement for reinforcing the opening is provided at a periphery of the opening, and the reinforcement is fixed to the front frame.