JPH10202155A - Painting mask jig - Google Patents

Abstract

(57) [Problem] To apply paint to a part of a lens of an automotive lamp equipped with a seal leg, the paint does not adhere to the lens surface by sewing a gap between the coating mask jig and the lens. To do. SOLUTION: The seal leg cover 7 covers the seal leg 3 of the lens 1 and the lens surface cover 6 covers the lens surface, and the seal leg cover has a cross-sectional shape that is slightly larger than the cross-sectional shape of the seal leg. A recessed portion 8 is provided, and a cushioning material 9 is provided at the inner side of the recessed portion to be in contact with the end surface of the seal leg.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating mask jig used for applying a coating to a part of a lens of an automotive lamp provided with a sealing leg. The present invention relates to a coating mask jig capable of sewing a gap between the coatings to prevent the paint from adhering to a lens surface.

[0002]

2. Description of the Related Art Some automotive lamps have a seal leg which is fitted into a lens installation groove formed on the periphery of the opening of the lamp body.

[0003] Such a lens with a seal leg is
For the purpose of concealing the inside of the periphery of the lens when it is attached to the lamp body, or for giving a sense of unity with the body of the automobile, the inner portion of the lens and the outer portion of the sealing leg (hereinafter referred to as the , Referred to as “the inner peripheral edge of the lens”.)
May be painted.

FIGS. 4 to 6 show an example of a coating mask jig b used for coating the inner peripheral portion of a lens a for such a vehicle lamp.

[0005] The lens a has an annular seal leg d projecting rearward and formed integrally with the lens body c at a position on the inner surface of the lens body c slightly inward from the periphery thereof. When such a lens a is attached to a lamp body (not shown), the seal leg d is fitted into a lens mounting groove formed on the periphery of the opening of the lamp body. .

[0006] A coating is applied to the inner peripheral edge of the lens a. Such coating of the lens a on the inner peripheral edge of the lens a is performed on the inner peripheral edge of the lens (a portion to be coated).
The other parts are covered with a coating mask jig b and sprayed with a spray gun.

That is, the coating mask jig b has a size slightly smaller than the inner surface of the lens a, and a groove e for fitting the seal leg d of the lens a is formed in a peripheral portion thereof.

Then, the coating mask jig b is positioned from the inner surface side of the lens a such that the groove e is fitted to the seal leg d of the lens a, and the inner surface of the lens a is sealed with the seal leg d. Cover with.

In this state, a spray gun is used to spray paint on the inner peripheral edge of the lens a to apply the paint.

[0010]

However, such a coating mask jig b damages the lens surface when it comes into direct contact with the inner surface of the lens. Therefore, a gap is formed between the two while the inner surface of the lens is masked. The coating is performed while the coating mask jig b is held slightly floating from the lens surface.

Further, since such a coating mask jig b is used for coating a large number of lenses a having the same shape, the shape of the groove e is changed in consideration of the dimensional error of the lens a.
Must be formed larger than the seal leg d.

When the paint is sprayed on the inner peripheral surface of the lens a while the inner surface of the lens a is covered with the coating mask jig b, a gap between the lens a and the coating mask jig b is formed. There is a problem that the mist-like paint flows from the gap to the inner surface of the lens a, and the paint adheres to an unexpected portion.

[0013]

According to the present invention, there is provided a coating mask jig comprising a seal leg cover for covering a lens seal leg and a lens surface cover for covering a lens surface. The seal leg covering portion has a concave portion having a cross-sectional shape slightly larger than the cross-sectional shape of the seal leg, and a cushioning material is provided at a deep portion of the concave portion to be in contact with an end surface of the seal leg.

Therefore, according to the coating mask jig of the present invention, the coating material does not come into contact with the lens surface when the coating mask jig does not come into direct contact with the lens surface and when the coating is performed by spraying. No paint adheres to unnecessary portions of the coating.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the coating mask jig of the present invention will be described below with reference to the embodiments shown in the accompanying drawings.

FIG. 1 shows a first embodiment of a coating mask jig according to the present invention. In the drawing, reference numeral 1 denotes a lens, and the lens 1 is an inner surface of a lens body 2 slightly from the periphery thereof. An annular sealing leg 3 protruding rearward at a position closer to the inside.
Are formed integrally with the lens body 2. The lenses used in the embodiments of the present invention are the same as those shown in the above-mentioned conventional example, and a part of them is shown in the drawings as a cross section.

The portion of the lens 1 outside the seal leg 3 on the inner surface thereof (the peripheral portion of the inner surface of the lens) is coated.

Reference numeral 5 denotes a coating mask jig, which has a lens surface cover 6 having a size slightly smaller than the inner surface of the lens 1 and is opened at the periphery of the lens surface cover 6 in a direction perpendicular to the lens surface. A seal leg cover 7 having a U-shaped cross section is formed integrally, and the seal leg 3 of the lens 1 is fitted into the recess 8 of the seal leg cover 7 with a margin. Note that such a coating mask jig 5 is formed by, for example, electrodepositing a metal (for example, nickel) on a model one size larger than the lens 1 by an electroforming method.

A cushioning material 9 made of, for example, a silicone resin is adhered to the inner surface of the concave portion 8 of the seal leg cover 7 formed on the periphery of the coating mask jig 5 by an adhesive. When the lens 1 is covered with the coating mask jig 5, the surface of the cushioning material 9 comes into contact with the end surface of the seal leg 3 of the lens 1. The contact is made over the entire circumference of the end face of the seal leg 3, so that the cushioning material 9 is slightly crushed when the contact is made in consideration of the dimensional error of the lens 1. It is preferable to keep the size as small as possible.

Incidentally, the cushioning material 9 is not limited to silicone resin.
It may be formed of urethane resin, rubber, or the like. In short, any material may be used as long as it is slightly crushed when pressed by the rear end surface of the seal leg 3. Further, any porous material such as a sponge may be used as long as it does not allow the mist (gas) paint to pass through when the paint is sprayed. However, in order to wash the paint adhered to the coating mask jig 5, for example, when metalene chloride is used, it is preferably formed of a silicone resin or a urethane resin.

When the coating mask jig 5 is positioned so that the sealing leg 3 of the lens 1 fits into the recess 8, the lens surface of the lens 1 is covered by the lens cover 6, The lens 3 is covered with the seal leg cover 7 and the lens 1
Is masked on the inner surface side. At this time, the cushioning material 9 adhered to the inner surface of the concave portion 8 is in contact with the end surface of the seal leg 3 over the entire circumference.

In this state, the paint is sprayed on the inner peripheral edge portion 4 of the seal leg 3 of the lens 1. At this time, the paint in the form of a mist (gas) is applied not only to the peripheral portion 4 of the inner surface of the lens but also to the outer peripheral surface of the seal leg 3. It does not penetrate into the inner surface, so that the lens 1
The paint does not adhere to the inside of the lens surface.

FIG. 2 shows a second embodiment of the coating mask jig of the present invention.

The second embodiment is different from the first embodiment in that the cross-sectional shape of the concave portion of the seal leg cover of the coating mask jig and the inner portion of the concave portion are attached to the concave portion. Since only the cross-sectional shape of the cushioning material is shown, only the main parts are shown in the drawing,
In addition, the description will be made only for the above-mentioned differences, and the other portions will be given the same reference numerals as those of the same portions in the coating mask jig according to the first embodiment. The description is omitted.

Reference numeral 10 denotes a coating mask jig. A concave portion 12 formed in the seal leg cover portion 11 on the peripheral edge thereof has a concave portion 12 at the inner portion thereof.
4 is formed on the inclined surface 13a so as to be displaced in a direction away from the surface 4 (see FIG. 2).

The cushioning material 15 attached to the recess 12 is
The cross-sectional shape is almost the same as the cross-sectional shape of the inner part of the recess 12, and the cushioning material 15 is fitted almost exactly to the inner part of the recess 12.

Then, such a coating mask jig 10
In this case, the same effect as that of the coating mask jig 5 shown in the first embodiment can be obtained, and the cushioning material 15
Has the effect of not being easily detached from the concave portion 12 by being hooked on the inclined surface 13a of the peripheral wall 13 on the inner side of
There is no need to bond the cushioning material 15 to the inner surface of the recess 12.

FIG. 3 shows a third embodiment of the coating mask jig of the present invention.

The third embodiment differs from the first embodiment only in the sectional shape of the seal leg cover of the coating mask jig. Show,
In addition, the description will be made only for the above-mentioned differences, and the other portions will be given the same reference numerals as those of the same portions in the coating mask jig according to the first embodiment. The description is omitted.

Reference numeral 16 denotes a coating mask jig, and a concave portion 18 formed in a seal leg cover portion 17 on the peripheral edge thereof has
At 9, the width is formed to be wide, whereby step portions 20 and 21 are formed between the inner portion and the remaining portion (see FIG. 3).

The cushioning material 22 attached to the recess 18 is
The cross-sectional shape is almost the same as the cross-sectional shape of the internal space 19 at the back of the concave portion 18, and the cushioning material 22 is fitted into the internal space 19 almost exactly.

Then, such a coating mask jig 16 is used.
In this case, the same effect as that of the coating mask jig 5 shown in the first embodiment can be obtained, and the cushioning material 22 can
There is an effect that the cushioning material 22 is not easily detached from the concave portion 18 by being hooked on 0 and 21, and it is not necessary to adhere the cushioning material 22 to the inner surface of the concave portion 18.

[0033]

As is apparent from the above description, according to the first aspect of the present invention, the coating mask jig is applied by spraying without directly contacting the lens surface. Occasionally, the paint does not reach the lens surface, and the paint does not adhere to unnecessary portions of the paint.

According to the second aspect of the present invention, the cushioning material can be attached to the deep portion of the concave portion of the seal leg cover without using an adhesive.

It should be noted that the specific shape and structure of each part shown in each of the above-described embodiments are merely examples of the embodiment for carrying out the present invention, and the technical and technical features of the present invention will be described below. The scope should not be construed as limiting.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view of a main part showing a first embodiment of a coating mask jig of the present invention.

FIG. 2 is an enlarged sectional view of a main part showing a second embodiment of the coating mask jig of the present invention.

FIG. 3 is an enlarged sectional view of a main part showing a third embodiment of the coating mask jig of the present invention.

FIG. 4 shows an example of a conventional coating mask jig together with FIGS. 5 and 6, and is a perspective view showing a state before the lens is covered with the coating mask jig.

FIG. 5 is a perspective view showing a state where the lens is covered with a coating mask jig.

FIG. 6 is a sectional view showing a state where the lens is covered with a coating mask jig.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Lens, 3 ... Seal leg, 4 ... Outer base periphery, 5 ... Mask jig for coating, 6 ... Lens surface cover, 7 ... Seal leg cover, 8 ... Depression, 9 ... Buffer material, 10 ... Painting Mask jig,
11 ... seal leg cover, 12 ... concave, 13a ... step (inclined surface), 15 ... cushioning material, 16 ... coating mask jig, 17 ...
Seal leg cover, 18 recess, 20 step, 21 step,
22 ... cushioning material

Claims (2)

[Claims] 1. A coating mask jig for use in applying a coating to an inner surface of a lens of an automotive lamp having a sealing leg fitted into a lens mounting groove of a lamp body and a portion outside the sealing leg. And a seal leg covering portion covering the sealing leg of the lens and a lens surface covering portion covering the lens surface surrounded by the sealing leg, wherein the sealing leg covering portion is slightly larger than the cross-sectional shape of the sealing leg. A mask jig for painting, comprising a concave portion having a cross-sectional shape, and a cushioning material abutting on an end face of a seal leg is provided in a deep portion of the concave portion. 2. The coating mask jig according to claim 1, wherein a step portion for preventing the buffer material from coming off is formed in a deep portion of the concave portion of the seal leg covering portion.