JPS6113415Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an undercover mounting structure for an engine in an automobile.

Conventionally, this type of undercover has a plurality of mounting holes formed around it, and bolt holes corresponding to the mounting holes of the undercover are formed in the side members and cross members that make up the underbody of the automobile. The undercover is fixed to the side member and cross member via bolts.

By the way, since the undercover is fixed so as to extend over the lower surface of each member, in the above-described conventional mounting structure, when fixing each member of the undercover, the undercover does not have to be inserted into the lower part of the car body, for example. , the bolts must be screwed while supporting the cover with one hand;
Therefore, there were problems in that fixing the cover was extremely difficult and time consuming, and moreover, the number of bolts used was inevitably increased.

Furthermore, if the mounting position of the cross member installed on the side member is misaligned, the conventional mounting structure does not allow the mounting holes provided in the cover to communicate with the bolt holes provided in each member. This caused problems such as the bolt becoming difficult to insert.

The present invention has been devised in view of the above-mentioned circumstances, and its purpose is to make it extremely easy to attach the undercover to each of the members, and to make it possible to attach the undercover to the side members. Even if there is some deviation in the mounting position of the cross member, the cover can be fixed to each member without any problem, and for example, in the event of a frontal collision of the vehicle, a part of the under cover will be removed from the cross member. It is an object of the present invention to provide an under cover mounting structure for an engine in an automobile that will not be accidentally detached.

In order to achieve the above object, the present invention includes forming a cross member that is located at the rear of the undercover mounting position and holds the engine into a closed cross-section and has a welded flange that extends forward on the front side of the cross member. , a plurality of mounting holes are provided around the undercover, and among these mounting holes, the mounting hole provided at the rear of the undercover is a cutout that is open to the rear, and the mounting parts on both sides of the cutout are arranged in the upper and lower directions. These mounting parts are elastically clamped and fixed by the welded flanges of the cross member.

The configuration of the present invention will be explained below according to the embodiment shown in the drawings.

In the figure, 1 and 1 are side members constituting the underbody of the automobile, 2 is a first cross member installed on the front side of the side members 1 and 1, and 3 is the side member 1,
A second cross member 3 has a welded flange 31 installed on the rear side in the traveling direction of the automobile, the second cross member 3 constitutes a support member for supporting an engine (not shown), and the second cross member 3 constitutes a support member for supporting an engine (not shown). A pair of dish-shaped single members having the flanges 31 are overlapped and welded to form a mid-shaped cross section as shown in FIG. Further, bolt holes 10 are formed in each of these members at positions corresponding to mounting holes 5, 5 formed in the undercover 4, which will be described later.

4 is an undercover made of synthetic resin that protects the lower surface of the engine, and a plurality of mounting holes 5, 5... are formed around the cover 4, and bolts are inserted into the mounting holes 5, 5... 8, 8... are further inserted into the bolt holes 10 of each member, and the insertion ends of the bolts 8, 8... are screwed into the nuts 81, 81... to attach the under cover 4 to the side member 1. , 1 and both cross members 2, 3
It is as if it were fixed to . Incidentally, it is appropriate that the nuts 81, 81, . . . are welded to the respective members in advance.

Reference numeral 7 denotes a notch formed in the undercover 4 through which the oil pan of the engine is exposed downward.

What is shown in the drawing is one of the mounting holes 5, 5 formed in the cover 4, which is located on the second cross member 3 side, in the undercover 4 having the above structure. Part 5a of
is a cut portion 5b that opens outward, in other words, toward the rear in the direction of travel of the automobile, and of the mounting portions 6a and 6b on both sides of the cut portion 5b, one of the mounting portions 6a is bent diagonally downward. By displacing it, both the attachment parts 6a and 6b are elastically held by the welding flange 31 of the second cross member 3.

The present invention is constructed as described above, and in order to fix the undercover 4 to each member, first, the attachment parts 6a and 6b on both sides sandwiching the cutout part 5b which is open to the outside are installed. , as shown in FIG. 4, one end of the cover 4 is fixed to the second cross member 3 by being elastically clamped to the flange 31 of the second cross member 3, and then formed around the under cover 4. Other mounting holes 5,
5 and the bolt hole 10 formed in each member, and after inserting the bolt 8 into the mounting hole 5 and the bolt hole 10, the insertion end of the bolt 8 is screwed into the nut 81. , the undercover 4 is fixed to the side members 1, 1 and both cross members 2, 3.

In the above explanation, only one of the mounting holes 5a located at the rear of the undercover 4 is opened rearward and is elastically clamped by the welding flange 31 of the second cross member 3. All mounting holes 5 and 5a located at the rear of cover 4
The welding flange 31 may be elastically clamped as a cut portion open to the rear.

As explained above, the undercover mounting structure of the undercover according to the present invention has a cross member which is located at the rear of the undercover mounting position and holds the engine, and has a closed cross section with a welded flange extending forward on the front side of the cross member. On the other hand,
A plurality of mounting holes are provided around the undercover, and among these mounting holes, the mounting hole provided at the rear of the undercover is a cutout that is open to the rear, and the mounting parts on both sides of the cutout are arranged in the vertical direction. Since these mounting parts are elastically clamped and fixed by the welded flanges of the cross member, when the under cover is fixed to each member, the mounting parts on both sides of the cut part are moved to the cross member. Of course, the rear part of the undercover can be easily attached to the cross member by simply clamping it to the welded flange at the front part of the member. Since the mounting parts on both sides are elastically clamped to the welding flange, the mounting parts can be easily moved relative to the flange, and therefore the mounting holes formed in the undercover and other members can be easily moved. The alignment is easy, and overall the work of fixing the undercover can be done extremely efficiently.Also, since the number of mounting holes formed in the cross member can be reduced accordingly, the rigidity of the cross member that holds the engine can be improved. There is no such thing as reducing the

Further, according to the present invention, the cut portion formed at the rear portion of the undercover is opened rearward, and the mounting portions on both sides of the cut portion are sandwiched between welded flanges of a cross member located at the rear portion of the undercover. Therefore, even in the event of a frontal collision of the vehicle, the welding flange will not be inadvertently disengaged from the attachment portion, and the undercarriage, which is particularly susceptible to the effects of the heat of the engine held on the cross member, will not be inadvertently released. Since the attachment hole at the rear of the cover is a cutout, expansion of the undercover due to engine heat can be absorbed by the cutout, and there is little risk of the undercover bending due to heat.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a perspective view of the undercover, FIG. 2 is a plan view showing the undercover installed state, and FIG. 3 is an enlarged end view taken along the - line in FIG. FIG. 4 is an enlarged end view taken along the - line in FIG. 2. DESCRIPTION OF SYMBOLS 1... Side member, 2... First cross member, 3... Second cross member, 31... Flange-shaped portion, 4... Under cover, 5... Mounting hole, 5b... Cutting part, 6a, 6b ...Mounting part.

Claims (1)

[Scope of utility model registration request] In a mounting structure in which an engine undercover made of synthetic resin is attached to a side member and a cross member of an automobile, the cross member, which is located at the rear of the mounting position of the undercover and holds the engine, is extended forward to the front side of the cross member. The undercover is formed into a closed cross-sectional shape with a welded flange, and a plurality of mounting holes are provided around the undercover,
Among these mounting holes, the mounting hole provided at the rear of the undercover is a cutout open to the rear, and the mounting parts on both sides of the cutout are displaced in the vertical direction, and these mounting parts are attached to the welded flange of the cross member. An undercover mounting structure for an engine in an automobile, characterized in that it is elastically clamped and fixed.