JPH08188178A - Lower body structure for automobile - Google Patents

Abstract

PURPOSE: To provide a lower body structure for automobile in which penetration of water into an engine room can be prevented, and in which an under cover can be commonly used in a vehicle having an engine mount member and a vehicle having no engine mount member by arranging a jack-up point part to a bracket for filling up an undercover gap. CONSTITUTION: This lower body structure for automobile has a lateral pair of under covers on the rear part side of a front cross member. The under covers 4 are mutually connected by a bracket 6. The bracket 6 has an extended part to be fixed to the lower surface of the front cross member 2, and the extended part has a jack-up point part 5 on the lower surface.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lower vehicle body structure of an automobile in which an undercover can be commonly used and a jack-up point portion is extended on a bracket forming a part of the undercover.

[0002]

2. Description of the Related Art In general, a so-called jack-up point portion is provided at a lower portion of a vehicle body for inspecting and repairing a lower portion of the vehicle body or repairing a puncture of a tire because the vehicle is jacked up.

9 to 12 show a jack-up point portion provided at a front portion of an automobile having a frame structure. 9 and 10
The jack-up point section 10 is shown in FIG.
1 is provided. Engine mount member 100
The front end portion is fixed to the substantially central portion of the front cross member 103 provided at the lower portion of the front end portion of the vehicle body 102 by joining or the like, and an inverted trapezoidal jack-up is formed on the lower surface side of the front end portion of the engine mount member 100. Point 1
01 is projected. On the rear side of the front cross member 103, a pair of under covers 104 are provided on both sides of the engine mount member 100 in order to protect devices such as a radiator in the engine room.

On the other hand, the engine mount member 100 may not be provided in the case of a rear engine type automobile or when the engine is mounted on the cross member. FIGS. 11 and 12 show an automobile of a type in which the engine mount member 100 is not provided, and the jack up point portion 105 is provided on the lower side of the front cross member 103. Both ends of the front cross member 103 are supported by an apron side member (not shown), and the jack-up point portion 10 is provided on the lower side of the front cross member 103.
An inverted trapezoidal bracket 106, which is No. 5, is joined.

In this case, since the pair of undercovers 107 arranged on the rear side of the front cross member 103 does not have the engine mount member 100, a gap 108 is formed between the undercovers 108, so that rainwater can be generated. May be blown into the engine room. Therefore, in order to close the gap 108 between the undercovers 107, it is necessary to join the undercovers 107 with each other by using separate parts or to extend one of the undercovers 107 to close the gap 108. 109 is a jack.

[0006]

As described above, according to the prior art, the structures of the undercovers 104 and 107 are different between a vehicle having the engine mount member 100 and a vehicle having no engine mount member 100. The engine mount member 100 cannot be used in common with a vehicle.

The present invention solves the above-mentioned problems, and by providing a jack-up point portion on a bracket that closes the gap of the under cover, it is possible to prevent water and the like from entering the engine compartment, and at the same time, for vehicles with an engine mount member. It is an object of the present invention to provide a lower vehicle body structure of an automobile in which the undercover can be commonly used in the case of 1) and the case of a vehicle having no engine mount member.

[0008]

In order to solve the above-mentioned problems, the present invention provides a lower vehicle body structure for an automobile in which a pair of left and right undercovers are provided on the rear side of a front cross member, and the undercovers are connected by brackets. Then
The bracket has an extension portion fixed to the lower surface of the front cross member, and the jack-up point portion is provided on the lower surface of the extension portion.

[0009]

[Function] The undercovers are connected to each other with a bracket. This bracket has an extension that is fixed to the lower surface of the front cross member, and the jack-up point is provided on the lower surface of this extension. By using it, the gap between the undercovers can be closed and a jack-up point portion can be provided.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. 1 and 2 show a lower body structure of an automobile according to the present invention. In FIGS. 1 and 2, reference numeral 1 is a vehicle body, 2 is a front cross member provided between apron side members 3 forming a frame of the vehicle body 1, and 4 is a left and right pair disposed on the rear side of the front cross member 2. A bracket 6 provided with a jack-up point portion 5 is provided between the undercovers 4. The jack-up point portion 5 is an under cover portion 9 of the bracket 6 which will be described later.
The front end of the front cross member 2 is provided with an extension portion that extends toward the lower surface side of the front cross member 2.

As shown in FIGS. 3 to 5, the bracket 6 is formed by pressing a plate 8 having an opening 7 formed in the center thereof. The bracket 6 is formed with a stepped portion such that the front portion is high and the rear portion is low, and the jack-up point portion 5 that is projected downward in an inverted trapezoidal shape is formed in an intermediate portion on the front side. A trapezoidal undercover portion 9 is formed on the upper side at an intermediate portion on the rear side. Flange portions 10 are provided on both sides of the bracket 6, and the screw holes 11 and 12 are formed in the flange portions 10.
Are formed. A nut 13 is welded to the plate surface of the flange portion 10 corresponding to the screw hole 12 on the rear side. The bracket 6 is screwed to the front cross member 2 by screwing a screw 14 and a nut 15 into the screw hole 11 in the front portion, and the screw 16 is inserted into the screw hole 12 in the rear portion and screwed into the nut 13. As a result, it is fixed to the left and right undercovers 4. A bead 17 is formed between the screw holes 11 in the jack-up point portion 5 of the bracket 6, and a bead 18 is formed in the front and rear directions on the left and right flange portions 10.

The bracket 6 is formed by pressing a rectangular plate 8 having an opening 7 formed in the center thereof as shown in FIG. 6, and the left and right vertical dimensions a and b are the same. I am using.

Next, the operation of the present invention having the above configuration will be described with reference to FIG.
The description will be made with reference to FIG. The undercover portion 9 of the bracket 6 is arranged between the left and right undercovers 4. Then, the screw holes of the under cover 4 and the screw holes 12 of the bracket 6 are aligned with each other, and the screw 1 is inserted into each screw hole.
6 is inserted and screwed into the nut 13. In this way, the gap between the undercovers 4 can be closed. Next, a screw 14 is inserted into a screw hole 11 in the front portion of the bracket 6 and a screw hole (not shown) of the front cross member 2 and is screwed into a nut 15 so that the front cross member 2 is attached to the front of the bracket 6. Screw the part. Thus, the undercover 4
And the front cross member 2 can be connected.

When the car is jacked up using the garage jack 19, the dish portion 20 of the garage jack 19 is inserted below the jack-up point portion 5,
The comb-shaped edge 21 is inserted into the opening 7 of the bracket 6. Thus, when the garage jack 19 is operated, the plate portion 2
By 0, the jack-up point portion 5 is lifted up, and the front portion of the vehicle body 1 can be raised.

According to the above embodiment, the gap between the undercovers 4 can be closed by the bracket 6, so that the gap between the undercovers 4 can be easily closed even in the case of a vehicle without an engine mount member. .
Further, since the jack-up point portion 5 is provided on the bracket 6, it is not necessary to provide the jack-up point portion 5 on the front cross member 2. Therefore, the under cover 4 can be commonly used in a vehicle having an engine mount member and a vehicle having no engine mount member. Further, the bracket 6 has a bead 17,
Since 18 is provided, the strength of the bracket 6 can be improved.

[0016]

As described above, according to the lower body structure of an automobile of the present invention, the following effects can be obtained. The lower vehicle body structure for an automobile according to claim 1, wherein a pair of left and right undercovers are provided on the rear side of the front crossmember. The undercovers are connected to each other by a bracket, and the bracket is fixed to the lower surface of the front crossmember. Since the extension portion is provided and the jack-up point portion is provided on the lower surface of the extension portion, it is possible to easily close the gap between the under covers even in the case of a vehicle without an engine mount member. Further, since the bracket has the jack-up point portion, it is not necessary to provide the front cross member with the jack-up point portion. Therefore, the undercover can be commonly used in the case of the vehicle having the engine mount member and the case of the vehicle having no engine mount member.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional conceptual view showing an embodiment of a lower body structure of an automobile according to the present invention.

FIG. 2 is a perspective view showing an under cover and a bracket of FIG.

3 is a perspective view showing the bracket of FIG. 1. FIG.

4 is a front view showing the bracket of FIG. 1. FIG.

FIG. 5 is a side view of FIG.

6 is an exploded view of the bracket of FIG.

FIG. 7 is a conceptual diagram showing the operation of the present invention.

FIG. 8 is a perspective view conceptually showing the operation of the present invention.

FIG. 9 is a conceptual diagram showing a jack-up method in the case of a vehicle having a conventional engine mount member.

FIG. 10 is a conceptual cross-sectional view showing a lower vehicle body structure of a front portion of a vehicle having a conventional engine mount member.

FIG. 11 is a conceptual diagram showing a conventional jack-up method for a vehicle without an engine mount member.

FIG. 12 is a conceptual cross-sectional view showing a lower vehicle body structure of a front portion of a vehicle without a conventional engine mount member.

[Explanation of symbols]

 1 Car Body 2 Front Cross Member 3 Apron Side Member 4 Under Cover 5 Jack Up Point 6 Bracket 7 Opening 8 Plate 9 Under Cover 10 Flange 11 Screw Hole 12 Screw Hole 13 Nut 14 Screw 15 Nut 16 Screw 17 Bead 18 Bead

Claims (1)

[Claims] 1. In a lower vehicle body structure of an automobile, wherein a pair of left and right undercovers are provided on the rear side of a front crossmember, the undercovers are connected to each other by a bracket, and the bracket is fixed to the lower surface of the front crossmember. A lower body structure of an automobile, characterized in that an extension part is provided, and a jack-up point part is provided on a lower surface of the extension part.