JPS641905Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Technical Field> The present invention relates to a wing-shaped spoiler made of synthetic resin that is attached to the rear of an automobile.

<Prior art> A device installed at the rear of a car, etc., for the purpose of suppressing the lift generated on the car during high-speed driving, or applying a downward force to the car body to improve running stability and wheel contact friction. There is a wing-shaped spoiler.

Conventionally, this type of spoiler has been manufactured by inserting a steel plate insert with a simple plate-like structure and integrally molding it with urethane resin, etc., and also has a certain level of rigidity and elasticity, as well as uniform hardness over the entire surface. However, due to the use of a steel plate insert with a simple plate-like structure, the thickness of the coating layer such as urethane resin is uneven throughout the spoiler, and the thick part of the coating layer is soft, and the thin part of the coating layer is soft. There was a problem with some parts becoming hard. Therefore, it is possible to accurately manufacture a steel plate insert so that it approximately approximates the overall shape of the spoiler and has a predetermined rigidity, but such inserts made of steel plate are heavy, and it is not possible to improve fuel efficiency. In addition to impeding the weight reduction of automobiles, there was also the problem that the number of man-hours required to manufacture the inserts increased, resulting in higher manufacturing costs.

<Purpose of the invention> The present invention was developed in consideration of the above points.
To provide an automobile spoiler which can make the thickness of a coating layer uniform to make the hardness of the spoiler surface uniform, has necessary elasticity and rigidity, and can be manufactured at low cost and lightweight.

<Structure of the invention> To this end, the present invention is a wing-shaped spoiler for an automobile in which a synthetic resin coating layer is formed around the insert, and the insert is made of synthetic resin by blow molding to form a wing-shaped spoiler at approximately the center in the longitudinal direction. It is divided into two parts and formed into a hollow shape that approximates the external shape of the spoiler, and the hollow part is provided with ribs in the thickness direction of the insert, so that the hollow inserts that are divided into two parts are fitted and connected at the split point. It is composed of

<Example> Hereinafter, an example of the present invention will be described based on the drawings.

Figure 1 shows a front view of a wing-shaped spoiler installed on the rear of a car, and Figure 2 shows a plan view of the same. 1 is the main body of the spoiler, which has an almost flat horizontal part in the center, and both ends. It is gently bent downward, and a support member 2 is attached to the lower center. Third
4, the main body 1 is integrally molded with foamed urethane resin, etc., with inserts 3 and 4 having shapes that approximate the external shape of the main body 1 and are slightly smaller than the main body 1, and the inserts A covering layer 6 is formed around 3 and 4. The insert is blow-molded from, for example, ABS resin to form hollow parts 3a and 4a inside, and is divided into two parts approximately at the center in the longitudinal direction, molded separately, and the divided parts are fitted and connected. That is, the above-mentioned insert is divided into an insert 3 and an insert 4 and blow-molded separately, and an insertion hole is made at the divided part of one insert 3 by using the hollow part 3a, and the divided part of the other insert 4 is made by using the hollow part 3a. An insertion part 4 that is closed and can be further fitted into the insertion hole.
b is provided protrudingly. On the other hand, four ribs 5 are provided in the hollow parts 3a and 4a of the inserts 3 and 4 in the thickness direction.
are provided, and the hollow parts 3a, 4a are connected to these ribs 5.
The inserts are divided into three parts in the width direction, thereby giving the elongated inserts 3 and 4 bending elasticity in the longitudinal direction and a certain degree of rigidity. Ribs 5 provided inside such hollow parts 3a, 4a
is formed by creating a groove-like recess in the longitudinal direction on the underside of the inserts 3, 4. Inserts 3 and 4 made separately by blow molding
The insertion part 4b of the insert 4 is fitted into the insertion hole of the insert 3, and then the boss 7 is passed from above and tightened to connect the main body 1.
Since the support member 2 is attached to the center of the support member 2 to support the connecting portion, there is no problem with strength.

In this way, since the inserts 3 and 4 are blow molded independently and separately, the molding machine can be made smaller compared to when molding long inserts, and the tip of the blow molded product can be made smaller than when molding long inserts. The inserts can be molded accurately with high dimensional accuracy without causing deformation such as the wall thickness being thinner at the base and becoming thicker towards the base. Furthermore, a covering layer 6 is formed around the fitted and connected inserts 3 and 4 into a predetermined shape using foamed urethane resin, etc., and the inserts 3 and 4 are formed to have approximately the same overall shape as the main body 1. Therefore, the coating layer 6 has a uniform thickness, and the surface hardness of the spoiler is almost uniform throughout.

Then, the strut member 2 is fixed to the molded main body 1 using mounting brackets, nuts, etc. that have been attached to the inserts 3 and 4 in advance, and further, using both ends of the strut member 2 and the main body 1, This spoiler is fixed on the rear of the car. A spoiler constructed in this manner is significantly lighter in weight than a conventional spoiler with a steel plate insert, has a predetermined elasticity and rigidity, and has a surface of uniform hardness.

Note that a reinforcing metal plate can also be attached to the lower side of the inserts 3, 4 along the longitudinal direction thereof. This metal plate is fixed to the bottom surface of the inserts 3, 4 with screws or the like so that the bent both ends thereof are inserted into the recesses made on the bottom side of the inserts 3, 4 to provide the ribs 5, and then the spoiler body is fixed. can increase the rigidity of In addition, by attaching this metal plate, it is possible to fill in the recesses created on the bottom surfaces of the inserts 3 and 4, so the thickness of the coating layer does not increase in these areas, which prevents sink marks that tend to occur during molding. .

<Effects of the Invention> As explained above, according to the automotive spoiler of the present invention, the insert is formed into a hollow shape that approximates the external shape of the spoiler and is divided into two approximately at the center in the longitudinal direction by blow molding of synthetic resin. Further, a rib is provided in the hollow part in the thickness direction of the insert, the hollow insert is divided into two parts, and the hollow insert is fitted and connected at the divided part, and a covering layer made of synthetic resin is provided around the insert. It was configured as follows. Therefore, since a long insert is divided into two parts and blow molded separately, inserts with uniform wall thickness, little deformation, and high dimensional accuracy can be easily manufactured using a small molding machine, and manufacturing costs can be reduced. Furthermore, since the spoiler is formed by forming a coating layer on an insert with high dimensional accuracy, the thickness of the coating layer can be made uniform and the hardness of the spoiler surface can be made uniform. It is possible to significantly reduce the weight compared to the spoiler used, and it is possible to give the spoiler the necessary elasticity and rigidity, making it possible to manufacture a spoiler with an excellent structure at a low cost.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Fig. 1 is a front view of the spoiler, Fig. 2 is a plan view thereof, Fig. 3 is an enlarged sectional view taken along line A-A in Fig. 1, and Fig. 4 is a view of the spoiler in Fig. 2. It is a BB enlarged sectional view. 1...Main body, 3, 4...Insert, 3a, 4
a... Hollow part, 4b... Insertion part, 5... Rib, 6... Covering layer.

Claims (1)

[Scope of utility model registration request] A wing-shaped automobile spoiler with a synthetic resin coating layer formed around the insert,
The insert is made by blow molding synthetic resin.
It is divided into two parts approximately in the center in the longitudinal direction and is formed into a hollow shape that approximates the external shape of the spoiler, and the hollow part is provided with ribs in the thickness direction of the insert, and the hollow insert that is divided into two parts is formed at the dividing point. An automobile spoiler characterized by being connected in a fitted manner.