JPH09142160A - Damage preventive structure for on-vehicle molding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To protect the lower face of a molding body from pebbles or the like jumped up by a tire without increasing the number of part items and fitting man-hours by providing the lower face of the molding body with a plurality of protective ribs integrally and protrusively at appropriate spaces apart in the longitudinal direction of a vehicle. SOLUTION: In a battery case 11 mounted at the lower part of an electric vehicle, the lower face of a bottom plate part 13 of a case body 12 is provided with a plurality of protective ribs 14 integrally and protrusively at constant height and at constant spaces in a longitudinal direction. One or both of the front and rear side faces of each protective rib 14 are provided with a plurality of reinforcing ribs integrally in an orthogonal direction to the protective rib 14. there reinforcing ribs 15 are integrally connected to one side face of the protective rib 14 and the lower face of a bottom plate face 13 and formed into approximately right-angled triangle or rectangular shape from the side view. Pebbles or the like made jump up by a tire 2a are thereby stopped by the protective ribs 14 so as not to come in direct contact with the lower face of the bottom plate part 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molded article mounted on a lower portion of a vehicle, such as an electric vehicle, for molding a molded article such as a battery case or a battery tray for holding a large number of batteries. The present invention relates to a structure for preventing damage to a molded product for mounting on a vehicle, which protects a small stone or the like from which a tire bounces.

[0002]

2. Description of the Related Art As a molded article mounted on the lower portion of a vehicle, those disclosed in, for example, Japanese Patent Laid-Open No. 5-193366 and Japanese Utility Model Laid-Open No. 5-12232 are known. Further, since such a molded product is a synthetic resin molded product and is exposed and mounted on the lower part of the vehicle, pebbles or the like from which the tire (front wheel) bounces up against the lower surface of the molded product when the vehicle is running, The molded product may be damaged. Therefore, the lower surface of the molded product is protected by attaching an undercover having impact resistance, which is separate from the molded product, or by attaching a tape to the lower surface of the molded product. Was common.

[0003]

By the way, in the conventional one in which an undercover is attached to the lower surface of the molded product mounted on the lower part of the vehicle or a tape is attached to protect the lower surface of the molded product, There has been a problem that the number of parts and the number of assembling steps increase, resulting in high cost. In view of the above-mentioned conventional problems, the object of the present invention is to protect the lower surface of the molded product body from the pebbles from which the tire bounces off the vehicle without increasing the number of parts and the number of assembly steps. It is to provide a prevention structure.

[0004]

In order to achieve the above object, a structure for preventing breakage of a molded product for vehicle mounting according to the invention of claim 1 is a molded product to be mounted on a lower portion of a vehicle. On the lower surface, a plurality of protection ribs for preventing small stones or the like from which the tire of the vehicle bounces directly hit the lower surface of the molded article body, are integrally formed at appropriate intervals in the front-rear direction of the vehicle. Is projected on. Therefore, the pebbles or the like that the vehicle tire bounces up can be received by the protective rib without directly hitting the lower surface of the molded article body.

Further, the structure for preventing damage to a molded product for mounting on a vehicle according to the invention of claim 2 is the structure for preventing damage to a molded product for mounting on a vehicle according to claim 1, wherein the protection rib is the protection rib. Reinforcing ribs are integrally provided in a direction orthogonal to the. Therefore, the impact resistance of the protective rib is efficiently enhanced by reinforcing the protective rib with the reinforcing rib.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION

(Embodiment 1) FIGS. 1 to 3 show Embodiment 1 of the present invention.
It is explained according to. In the first embodiment,
A case where the vehicle is an electric vehicle using a motor as a drive source and the molded product for mounting on the vehicle is a battery case will be exemplified. 1 to 3, a battery case 11 is mounted on the lower portion of the electric vehicle 1 between the front wheels 2 and the rear wheels 3. The battery case 11 is a synthetic resin molded product formed by injection molding or blow molding of synthetic resin, and integrally includes a case body 12 and a protection rib 14.

The case body 12 is formed in the shape of a rectangular box having a battery storage chamber in which a large number of batteries are vertically and horizontally arranged and stored. As shown in FIG. It is mounted in an exposed state. The bottom surface of the bottom plate portion 13 of the case body 12 is mainly for preventing small stones or the like from the tire 2a of the front wheel 2 of the electric vehicle 1 from directly hitting the bottom surface of the bottom plate portion 13 of the case body 12. Multiple protective ribs 14
Are provided integrally with each other in the front-rear direction of the electric vehicle 1 at regular intervals with a constant height.

In addition, in the first embodiment, one or both of the front and rear side surfaces of each of the protection ribs 15 has a plurality of reinforcing ribs in a direction orthogonal to the protection ribs 15.
15 are provided integrally. As shown in FIG. 2, the reinforcing ribs 15 are integrally connected to one side surface of the protection rib 15 and the lower surface of the bottom plate portion 13 of the case body 12, respectively, and are formed into a substantially right-angled triangular side surface. Alternatively, it may be formed in a rectangular shape that is respectively connected to the opposing surfaces of the adjacent protection ribs 15 and the lower surface of the bottom plate portion 13 of the case body 12.

In the first embodiment configured as described above, the pebbles or the like which the tire 2a of the front wheel 2 jumps up when the electric vehicle 1 is running, as shown by the arrow in FIG. As it advances toward the lower surface of the bottom plate portion 13, the pebbles and the like are received by the protection ribs 14,
The small stones do not directly contact the lower surface of the bottom plate portion 13. In addition, the bottom rib of the case body 12 is provided by the protective ribs 14.
The rigidity of the battery case 11 can be increased by increasing the rigidity of the battery case 11.

(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIG. 4. In the second embodiment, the angle of flipping up of a small stone or the like that the tire 2a of the front wheel 2 jumps up is Considering that the lower surface of the bottom plate portion 13 of the case body 12 gradually decreases from the front side to the rear side, a protection rib 14 provided on the lower surface of the bottom plate portion 13 of the case body 12 is provided.
The projecting height of the case body 12 is gradually reduced from the front side to the rear side of the case body 12. Therefore,
The lower surface of the bottom plate portion 13 of the case body 12 can be efficiently protected by the respective protection ribs 14 and the molding material for the protection ribs 14 can be reduced.

(Third Embodiment) Next, a third embodiment of the present invention will be described with reference to FIG. 5. In the third embodiment, the lower surface of the bottom plate portion 13 of the case body 12 is provided so as to project. In the plurality of protective ribs 14, the protruding heights from the lower surface of the bottom plate portion 13 of the case body 12 are substantially the same, and the arrangement intervals thereof are gradually increased from the front side to the rear side of the case body 12. It was done. This reduces the number of protective ribs 14,
The molding material can be reduced.

Also in the second and third embodiments, reinforcing ribs are provided in the direction orthogonal to the protective ribs 14 as needed. Further, in the first, second and third embodiments, the case where the respective protection ribs 14 projecting from the lower surface of the bottom plate portion 13 of the case body 12 are provided linearly in the left-right direction has been exemplified. For example, each protection rib 14 may be formed in an arc shape centered around the rear side of the ground contact surface of the tire 2a of the front wheel 2 or may be formed in a wavy shape. Further, the molded product mounted on the lower portion of the vehicle is not limited to the battery case 11.

[0013]

As described above, according to the present invention,
The lower surface of the molded product body can be protected by the protective ribs without increasing the number of parts and the number of assembly steps, and the product can be provided at low cost.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a battery case showing a first embodiment of the present invention.

FIG. 2 is a perspective view showing the bottom surface of the battery case in the same manner.

FIG. 3 is an explanatory view showing a state in which a battery case is mounted on a lower portion of an electric vehicle in the same manner.

FIG. 4 is a side sectional view of a battery case showing Embodiment 2 of the present invention.

FIG. 5 is a side sectional view of a battery case showing a third embodiment of the present invention.

[Explanation of symbols]

 1 Electric Vehicle (Vehicle) 2 Front Wheel 2a Tire 11 Battery Case (Molded Product) 12 Case Body (Molded Product Body) 13 Bottom Plate 14 Protective Rib 15 Reinforcing Rib

Claims (2)

[Claims] 1. A molded article to be mounted on a lower portion of a vehicle, wherein a plurality of pebbles or the like on the lower surface of the molded article body are provided to prevent the pebbles or the like from which the tire of the vehicle bounces from directly hitting the lower surface of the molded article body. 2. The structure for preventing damage to a vehicle-mounted molded article, wherein the protective ribs are integrally provided so as to project in the front-rear direction of the vehicle at appropriate intervals. 2. The structure for preventing damage to a molded product for vehicle mounting according to claim 1, wherein the protective rib is integrally provided with a reinforcing rib in a direction orthogonal to the protective rib. A structure for preventing damage to molded products that are mounted on vehicles.