JPH079630Y2 - Mall with core material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a molding in which the surface of a metal core material is coated with a design material, and more particularly to the structure of the core material.

[Prior art]

A molding is attached to the side surface of the car body for decorative purposes and to protect the car body.

As the type of the molding, the molding is made entirely of synthetic resin or the core material 95 of a metal plate is used as shown in FIG. There is a molding that covers the design material 85.

In the latter molding, the design material 85 has a straight line portion 852 and design material terminal portions 851 and 853. And the straight line portion 8
The core material 95 is provided only on the lower surface of the 52, and the end portion of the design material
The core material 95 is not provided on the 851 and 853.

However, in this molding, since there is no core material in the design material end portions 851 and 853, the end portions are liable to be bent, bent, or deformed, and the external shape is not good.

Therefore, as shown in FIGS. 14 to 16, there is a molding with core material in which the end portion of the core material 91 is arranged up to the end portion of the design material 8 of the design material 8. That is, in the molding with core material,
As shown in Fig. 16, the core material 91 is composed of the design material end portions 81, 82, 83.
It has terminal parts 911, 912, 913 for supporting the back side of the. Further, the core material 91 has a straight general portion 914 for supporting the back side surface of the design material straight portion 84.

And conventionally, the core material 91 is made of a single metal plate or the like.
The terminal parts 911 to 913 and the general part 914 are continuously and integrally molded. That is, the core material 91 is an integrated product in which the end portion as well as the general portion is press-molded at the same time as the desired molding shape.

Further, in manufacturing a molding, this integral core material is put into a molding die, a design material is supplied, and the front surface of the core material is coated with the design material.

[Problems to be solved]

By the way, the design material 8 covering the core material 91 is shown in FIG.
As shown in Fig. 16, it is essentially required that the thickness be uniform. This is because, if the thickness of the design material 8 is partially different, sink marks, weld squeezing unevenness, and the like occur on the outer surface (front side surface) of the design material 8, and the appearance of the molding is impaired.

However, the terminal portions 911 to 913 of the core 91 are shown in FIG.
As shown in FIG. 16, it has a complicated step-like shape that rises from three directions toward the general portion 914. Also, the core material
The general portion 914 of 91 also has a complicated step-like shape that goes upward from both sides (Fig. 15). Therefore, integrally molding the core material 91 having such a shape by press molding or the like entails great difficulty in the design of the press mold and the press technology.

Therefore, in the conventional core material, as shown in FIG. 7, the central portion of the general portion 914 of the core material 91 has a concave shape along its longitudinal direction (compare with FIG. 15), or As shown in FIG. 18, the terminal parts 911 to 913 were sometimes deformed (compared with FIG. 16).

Then, as shown in FIGS. 17 and 18, the design material 8 covered with the deformed core material 91 has a partially different thickness. As a result, as described above, the design material 8
Partly caused sink marks and uneven squeezing, resulting in poor appearance.
The mall will be manufactured.

In view of such conventional problems, the present invention makes it possible to easily configure a core material made of a metal having a complicated shape, particularly even when the shape of the terminal portion is complicated, and has an excellent appearance. It is intended to provide a mall with a core material having a beautiful design.

[Means for solving problems]

The present invention is a molding with a core material, which is obtained by coating the front and side surfaces of a metal core material with a design material such as synthetic resin. The core material is prepared by separately preparing a general portion and a terminal portion in advance. A molding with a core is characterized in that the core is constructed by combining them and then combining them.

What is most noticeable in the present invention is that the general part and the end part of the metal core material are separately prepared, and then these are combined to form the core material.

The terminal portion is a portion that is located at the terminal portion of the mall and supports the design material of the portion. The general portion is a portion located between the terminal portions on both sides and is usually linear. The front side of the core material is the side facing the exterior design surface of the molding. Further, the core material is coated with the design material on the whole or a part of the front surface of the core material. The design material may also cover the back side of the core material.

Examples of the design material include soft PVC, rubber-modified polypropylene, synthetic resin such as thermoplastic elastomer, or rubber. Also, as the material for the core material, an aluminum plate,
A metal plate such as a steel plate or a stainless steel plate is used.

Also, the general part and the end part of the core material are manufactured separately, but since the general part has a relatively simple shape, it is molded by a molding method with a relatively small number of steps such as roll molding and press molding. be able to. On the other hand, since the terminal part has a complicated shape, it is manufactured by highly accurate press molding or the like.

Then, the general portion and the end portion are combined to form a core material. This combination is performed by welding, fitting, and adhering the combined portions of the general portion and the end portion to each other.

The core material combined as described above is placed in the mold,
The design material is supplied to cover the front surface of the core material with the design material.

[Action and effect]

In the present invention, the metal core material is prepared by separately preparing the general portion and the terminal portion in advance, and then combining the both to form the core material shape. Therefore, a general part having a relatively simple shape can be easily manufactured by a molding method with a relatively small number of steps such as roll molding and press molding.

Further, although the terminal portion has a complicated shape, only this portion is separately molded. Therefore, it is possible to easily produce an arbitrary complicated shape by press molding or the like. Further, the general portion and the terminal portion can be easily combined, and the core material having a desired shape can be accurately and easily constructed.

Further, since the core material having a desired shape can be accurately manufactured, the design material can be coated with a uniform thickness. Therefore, unlike the conventional case, there is no sink mark or uneven drawing on the surface of the design material, and the design material has an excellent appearance.

Therefore, according to the present invention, it is possible to easily provide a core material having a complicated shape and to provide a molding with a core material having an excellent appearance and design beauty.

〔Example〕

First Embodiment A mall with a core material according to an embodiment of the present invention
This will be described with reference to FIGS.

First, as shown in FIGS. 1 and 2, the molding of this example comprises a core material 1 and a design material 2 coated on the front side surface thereof.

The core material 1 includes a left end portion 11 and a right end portion 12
And a straight general portion 15 provided therebetween. The general part 15 and the terminal parts 11 and 12 are separately manufactured as three parts and are combined with each other to form a core, as described later.

The left end portion 11 has a tip portion 111, a middle step portion 112, an inclined portion 113, and an upper step portion 114, as shown in FIGS. 1 to 4.
And a rear end assembly portion 116, and the side sloped surface 110 (the third
Figure).

As shown in FIGS. 1, 2, 5, and 6, the terminal portion 12 on the right side has a tip inclined portion 121, an upper step portion 122,
It has a rear end assembly 126 and a side sloped surface 129 (Fig. 5).

The general portion 15 has a linear body having an inclined portion 152 and an upper step portion 153 provided in the width direction, as shown in FIGS. 1, 2, and 7. The left end of the general portion 15 has a combination fitting portion 151 that covers the surface of the rear end assembly portion 116 of the terminal portion 11. Further, at the right end of the general portion 15, there is a combination fitting portion 155 that covers the surface of the rear end assembly portion 126 of the terminal portion 11.

The terminal portion 11 has a rear end assembly portion 116 protruding rearward at a position lower than the upper step portion 114. The terminal portion 12 has a rear end assembling portion 126 that projects rearward at a position lower than the upper step portion 122.

Then, the end portions 11 and 12 are combined with the left and right ends of the general portion 15 to form a core material. In addition, the combination is a combination fitting part 151, 155 at both ends of the general part 15.
The rear end assembly parts 116 and 126 of the terminal parts 11 and 12 are fitted to each other and welded to each other.

Further, the upper step portions 114, 153 and 122 of the terminal portion 11, the general portion 15 and the terminal portion 12 and their side surfaces are on the same plane.

Further, as shown in FIGS. 1 and 2, on the front surface of the core material, the terminal portion 11, the general portion 15, and the terminal portion 12 are provided with a design material.
211, 212, 213, 214, 215, 218 are integrally covered. And all the said design materials are uniform thickness.

Next, a method for manufacturing the above molding will be described.

First, in manufacturing the core material, as shown in FIGS. 3 to 7, the left end portion 11, the right end portion 12, and the general portion 15 are separately manufactured.

The terminal portions 11 and 12 are made of stainless steel plate and press-formed into the above shape. The general portion 15 is made of stainless steel plate and roll-formed into the above shape.

Then, as shown in FIG. 8, the end portions 11 and 12 were combined with both ends of the general portion 15 and these were joined by resistance welding to manufacture the core material 1. The combination state has been described with reference to FIGS. 1 and 2.

Next, the core material 1 was set in an injection molding die composed of an upper die 3 and a lower die 4, as shown in FIG. The upper mold 3 has a cavity 31 for molding a design material and a synthetic resin injection path 32. Further, the lower mold 4 has a mold surface 41 along the back side surface of the core material 1.

Next, the synthetic resin for the design material is injected into the cavity 31 of the upper mold 3 through the injection path 32 in a soft state, and the core material 1
The design material is coated on the front surface of the.

As described above, the molding with core shown in FIGS. 1 and 2 was manufactured.

As described above, according to this example, the core material 1 is preliminarily provided with the end portion.
It is manufactured by separately manufacturing 11, 12 and the general part 15 and then combining them. Since the general portion 15 is linear, it can be easily manufactured by roll forming. The terminal parts 11 and 12 have a complicated shape, but the general part 1
Since it can be molded independently of 5, it can be easily manufactured in one step by press molding.

Therefore, the core material 1 can be easily manufactured into a predetermined shape, even though the end portions 11 and 12 thereof have complicated shapes.

Moreover, since the design material 2 is covered with the core material 1 having a predetermined shape, the thickness of the design material 2 can be made uniform. Therefore, the surface of the design material 2 does not have sink marks or uneven drawing, and has an excellent appearance.

Second Embodiment This embodiment shows an example of the combination and fixing means in the core material as shown in FIGS. 10A to 11.

That is, FIGS. 10A and 10B show the welding of the rear end portion 51 of the terminal portion 5 and the front end portion 61 of the general portion 6 via the contact plate 70. This welding is performed by resistance welding using the electrode rods 71 and 72.

Further, FIG. 11 shows a mode in which an L-shaped bent portion 52 is provided at the rear end of the terminal portion 5, the tip portion 61 of the general portion 6 is fitted in this portion, and both are directly resistance welded.

Third Embodiment This embodiment shows, as shown in FIGS. 12A to 12D, the combination and fixation of core materials by fitting.

That is, as shown in FIG. 12B, the terminal portion 5 has the insertion portion 55 at the rear end and is recessed in front of the insertion portion 55.
54, having an upper surface 53. The insertion portion 55 and the upper surface 53 are on the same plane, and the recess 54 is located at a position lower than these. The depth of the recess 54 is almost the same as the thickness of the general portion 6 (see FIG. 12C).

On the other hand, the general portion 6 has a tip portion 61 as shown in FIG. 12A.
A rectangular step portion 66 is provided slightly inside. The stepped portion 66 punches out a part of the general portion 6 in a U-shape (12th D).
(Refer to the drawing) and is pressed down by the plate thickness.
Therefore, above the step 66, a recess 65 having an opening 651 is provided.
Are formed.

When assembling the terminal portion 5 and the general portion 6, the insertion portion 55 of the terminal portion 5 is inserted through the opening 651 of the general portion 6. Then, the insertion part 55 is replaced by the general part 6
Located in the recess 65 above.

As a result, as shown in FIG. 12C, the recess 6 of the general portion 6 is
The insertion part 55 is inserted into the inside 5, while the tip part 61 of the general part 6 is formed into the recess 54 of the terminal part 5. Then, the general portion 6 and the terminal portion 5 are combined and fixed.

In the present example as well, after the above combination, the general portion 6 and the terminal portion 5 may be welded or bonded to each other to fix them.

Further, as shown in the figure, the general portion 6, the insertion portion 55, the tip portion 6
1, the upper surface of the upper surface 53 of the terminal portion is substantially flush with the same surface. In addition, these side faces are also on the same plane. In addition, these side faces are also on the same plane. Therefore, when the design material is coated on this, the surface of the design material is smooth and looks good.

[Brief description of drawings]

1 to 9 show a first embodiment, FIG. 1 is a partially cutaway perspective view of a molding with a core material, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIG. Is a perspective view of the left end portion, FIG. 4 is a sectional view taken along the line BB of FIG. 3, FIG. 5 is a perspective view of the right end portion, and FIG. 6 is a CC line of FIG. FIG. 7 is a perspective view of a general portion, FIG. 8 is a plan view of a core material in a state where both end portions and a general portion are combined, FIG. 9 is a sectional view of a molding die, and FIG. 10A to FIG. FIG. 11 shows the core material of the second embodiment, the first
0A is a sectional view taken along the line DD of FIG. 10B during welding,
FIG. 10B is a plan view of the core material, FIG. 11 is a sectional view showing a combination and welding state of other core materials, and FIGS. 12A to 12D show a core material combination process of the third embodiment. Fig. 12A is a sectional view of the tip of the general portion, Fig. 12B is a sectional view of the end portion,
12C is a sectional view taken along the line EE of FIG. 12D, FIG. 12D is a plan view, FIG. 13 is a sectional view of a conventional molding, and FIGS. 14 to 18 are other conventional core materials. FIG. 14 is a perspective view of the molding, FIG. 15 is a sectional view taken along the line FF of FIG. 14, and FIG.
14 is a sectional view taken along the line GG in FIG. 14, and FIGS. 17 and 18 are sectional views showing the conventional defects corresponding to FIGS. 15 and 16. 1 …… Core material, 11,12,5 …… Terminal part, 15,6 …… General part, 2
…… Design material, 3 …… Upper mold, 31 …… Cavity, 4 …… Lower mold, 7
……welding,

Claims (2)

[Scope of utility model registration request] 1. A molding with a core, comprising a metal core having front and side surfaces covered with a design material such as synthetic resin, the core having a general portion and a terminal portion separately prepared in advance. A molding with a core, characterized in that the core is formed by combining the two. 2. The molding with core material according to claim 1, wherein the general portion and the end portion of the core material are fixed to each other by welding, fitting, or bonding.