JPH06247101A - Wheel cover for automobile and its manufacture - Google Patents

Abstract

PURPOSE:To satisfy functional and design requirements concurrently and to utilize a recycle resource, by forming a core and a surface out of a hard synthetic resin material and a soft synthetic resin material respectively, and integrating them. CONSTITUTION:To the core 2 of a wheel cover H, a hard synthetic resin material made from the recycle material of a wheel cover, a bumper, and the like is used so as to secure the strength, while a soft synthetic resin material good in appearance is used for a surface 1. The surface 1 is formed by an injection molding, and set to a die of the core 2, and the core 2 is integrated by an insert molding and the like. Consequently, the functional characteristics and the designing property of the wheel cover H are improved, the recycle material can be utilized, and the process number and the cost can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile wheel cover and a method for manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, a plastic automobile wheel cover is integrally formed by integral molding, and the molding is usually performed by an injection molding method. And as the forming material thereof, M-PPO, PA
Only a limited number of synthetic resin materials such as / PPO alloy and PA have been used. Further, the surface is usually coated so as to improve the appearance after molding.

[0003]

As described above, the conventional plastic wheel cover forming materials for automobiles are limited to several kinds of materials, which are integrally molded, and have strength and heat resistance as a wheel cover. , A material with hardness is used because it requires weather resistance,
As a result, the feel of the surface of the wheel cover cannot be softened, and it does not always give a favorable impression to the user. Furthermore, once there was no room to consider using recycled materials. In this invention, different materials are used for the core and the skin of the wheel cover, that is, a hard material having excellent strength and physical properties is used for the core, and the skin has a soft texture and weather resistance and chipping resistance. Use materials superior to. It also utilizes recycled synthetic resin material once used for vehicles such as wheel covers and bumpers, especially in the core, while the skin has a soft, nice-looking, touch-friendly, weather-resistant, By using a synthetic resin material having chipping resistance, it is intended to satisfy the functional and design aspects of the wheel cover at the same time, and to obtain a wheel cover that meets recent demands for utilization of recycled resources.

[0004]

[Means for Solving the Problems] An automobile wheel cover and a core portion, wherein a core portion is formed of a hard synthetic resin material, a skin portion is formed of a soft synthetic resin material, and these are integrated. Characterized in that it is formed of a hard recycled material, the automobile wheel cover described above, a number of projections integrally formed on the skin, fit into the hole provided in the core to match The above-mentioned automobile wheel cover, which is combined by being attached,
An automobile wheel cover as described above, characterized in that a skin portion formed of a soft material is configured to be extended to the surface of the tire, and a core portion and a skin portion using different synthetic resin materials. The next molding is characterized in that the skin is molded by injection molding with a soft material, then it is set in a mold for molding the core, and the core of the hard material is insert-molded and integrated. Manufacturing method of automobile wheel cover, core part made of hard material is injection-molded as primary molded product, and it is molded by mold clamping, injection, pressure holding, cooling, mold opening process, and then this core part is fixed mold side A method for manufacturing an automobile wheel cover is characterized in that the outer skin part made of a soft material is molded and integrated by mold clamping, injection, pressure holding, cooling, and mold opening while being held.

[0005]

The wheel cover of the present invention is different in the synthetic resin material forming the skin and the core, and is made of a soft material for the skin and a hard material for the core. The wheel cover obtained according to the present invention has a soft skin portion that does not cause scratches when pebbles hit during traveling, does not cause injury even when touched by hands during attachment / detachment, and protects the skin portion. By making it larger than the steel wheel, the gap between the tire and the tire can be filled, and the entire wheel cover can be enlarged to improve the appearance, and at the same time, the air resistance during traveling can be reduced. By using different materials for the core and skin in this way,
Each property of those materials can be utilized. In particular, in terms of design, it is difficult to use in terms of appearance and appearance, but once the recycled material used in the wheel cover etc. is used as the core material in the core part,
Utilizing the advantages of strength and physical properties that they have,
On the other hand, a soft material that is difficult to use for the core material in terms of strength and physical properties,
By applying it to the skin portion, the surface texture of the wheel cover is improved, and the material is a wheel cover for automobiles in which those materials are skillfully combined. The molding is performed by separately molding the core portion, the skin portion, or the skin portion and the core portion, and then integrating them in the mold.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 (a) shows a wheel cover (H) of the present invention.
1A shows the entire surface of FIG. 1A, and FIG.
It is an A'line section. That is, this wheel cover (H)
As shown in FIG. 1 (b), is composed of a skin portion (1) and a core portion (2). In the figure, (h) is an opening. Here, the wheel cover (H) needs to be fixed to the steel wheel (W) [see FIGS. 3 and 4 described below], the core portion.
(2) requires the use of a hard material, which ensures the required strength. These skin (1) and core (2)
Is preferably formed of a combination of materials that have good adhesion to each other, but due to the different synthetic resin materials forming the skin (1) and core (2), mutual bonding is not possible. When there is a possibility that it will be sufficient, the skin (1) and the core (2) are integrally formed on the skin (1) at 10 to 20 places as shown in FIG. The protrusions (a) may be fitted and fitted in the holes (b) provided in the core portion (2) so as to match the protrusions (a). Especially when using recycled material that has been molded and used once for the core (2) as a wheel cover, bumper, etc., when the first time it is used, the paint pieces applied to the surface of the wheel cover etc. Due to the mixture, it tends to be deposited on the molding surface and deteriorate the adhesion to the surface material, but even in such a case, the bonding as shown in FIG. 2 is effective.

The above-mentioned recycled material, even if it is used as it is as a material for forming a wheel cover,
It is difficult to use in terms of appearance and appearance. However, once used as a core material in the core, the recycled material used as a vehicle part of the same kind such as a wheel cover and a bumper, the strength and physical property advantages they have are known, and It is quite reasonable to make the best use of. Further, when a recycled material is produced, there is an advantage that the step of removing the coating applied to the recycled material can be omitted and pelletized. On the other hand, even a soft material that is difficult to use as a core material in terms of strength and physical properties can be utilized well by applying it to the skin portion. Since the surface of the wheel cover (H) of the present invention (1) is formed of a soft material with a good appearance, surface coating or plating is not required after molding unlike conventional products. There is also a great feature of the present invention.

Next, a method for manufacturing the wheel cover (H) of the present invention will be described. As mentioned above, the core (2) and the skin (1)
Using different materials, mold the skin (1) as a primary molded product by injection molding, then set it in the mold for molding the core (2) and insert the core (2). Mold and integrate. Alternatively, the skin (1) may be injection-molded into the core (2).
May be integrated with. In the process, the core part (2) is first obtained by injection molding as a primary molded product by the steps of mold clamping, injection, pressure holding, cooling and mold opening. Next, with the core part (2) held on the fixed mold side, the movable mold is used to mold the skin part (1) in the order of mold clamping, injection, holding pressure, cooling, mold opening, and product removal. To do. The wheel cover (H) of the present invention thus obtained
Differ in the synthetic resin material that forms the skin (1) and core (2), which uses a soft material for the skin (1)
A hard material is used for (2).

FIG. 3 shows a state in which a wheel cover (H ') formed of a conventional ordinary hard material is attached to a steel wheel (W) side equipped with a tire (T).
This shows a state in which a recess (r) is present between the peripheral end of the wheel cover (H ') and the tire (T). As shown in FIG. 4, the wheel cover (H) of the present invention is made large in size by extending the skin portion (1) made of a soft material to the surface of the tire (T), thereby making the tire ( The concave portion (r) generated between T) is covered to reduce the air resistance during traveling and improve the appearance in terms of design.

[0010]

EFFECTS OF THE INVENTION The wheel cover obtained according to the present invention does not get scratched by pebbles hitting it during traveling due to the soft skin portion (improvement of chipping property), and can be touched by hand during attachment / detachment. No injuries (improved safety) and the gap between the tires is filled by making the skin larger than steel wheels.
The entire wheel cover can be made large and good in appearance (improved in functionality and design). As described above, the wheel cover of the present invention uses various soft materials for the outer skin portion, and as the hard material for the core portion, among others, the wheel cover, the bumper, and the like, in vehicle parts, once, the same kind of recycled material used, Alternatively, a glass-reinforced material is used, and a combination thereof is used to provide a new wheel cover that has not existed in the past. In addition, since the surface skin part is molded and covered with a soft material with a good appearance, it is not necessary to apply surface coating and plating after integral molding as in the conventional product, so that The number of steps is reduced and the cost is greatly reduced.

[Brief description of drawings]

FIG. 1 is a front view and a sectional view of a wheel cover of the present invention.

FIG. 2 is a partial cross-sectional view of another embodiment of the wheel cover of the present invention.

FIG. 3 is a diagram illustrating a mounting state of a conventional wheel cover.

FIG. 4 is a diagram illustrating a mounted state of the wheel cover of the present invention.

[Explanation of symbols]

 (1) Skin (2) Core (H) Wheel cover (H ') Wheel cover (h) Open hole (a) Protrusion (b) Hole (T) Tire (W) Steel wheel (r) Recess

Claims (6)

[Claims] 1. A wheel cover for an automobile, wherein the core portion is formed of a hard synthetic resin material, the skin portion is formed of a soft synthetic resin material, and these are integrated. 2. The wheel cover for an automobile according to claim 1, wherein the core portion is formed of a hard recycled material. 3. A plurality of protrusions formed integrally with the skin portion are fitted and fitted into holes provided in the core portion so as to match the protrusions, and are joined together. The automobile wheel cover described in 2. 4. The wheel cover for an automobile according to claim 1, 2, or 3, wherein a skin portion made of a soft material is extended to a surface of the tire. 5. A synthetic resin material having different core and skin is used, and the skin is molded by injection molding with a soft material as a primary molded product, and then it is set in a mold for molding the core. Then, a manufacturing method of an automobile wheel cover, characterized in that the core portion of the hard material is insert-molded and integrated. 6. A core made of a hard material is injection-molded into a primary molded product, which is molded by the steps of mold clamping, injection, pressure holding, cooling, and mold opening, and then the core is held on the fixed mold side. A method for manufacturing an automobile wheel cover, characterized in that a movable material is used to mold and integrate a soft-skin skin portion by mold clamping, injection, pressure holding, cooling, and mold opening.