JP6854165B2 - Vehicle lamp cover - Google Patents

Description

The present invention relates to a technical field for a cover of a vehicle lamp to be welded to a lamp housing.

In order to join the cover to the lamp housing in a vehicle lamp, methods such as hot plate welding and vibration welding have been conventionally used.
In such a vehicle lamp, water droplets tend to adhere to the inner surface of the cover due to factors such as the inflow of moist air from the ventilation holes and the temperature difference between the inside and outside. The attached water droplets may affect the light distribution control, and may reduce the amount of light passing through the cover to reduce the visibility. Therefore, it is common practice to form a film on the inner surface of the cover. For example, Patent Document 1 discloses a technique of forming a film having an antifogging effect on the inner surface of a cover to prevent the adhesion of water droplets.

Further, when forming a film on the inner surface of the cover, the film may adhere to an unintended portion. Therefore, a technique is known in which a mask jig is used to cover a portion that does not require the formation of a film to prevent the film from adhering (see, for example, Patent Document 2).

Japanese Unexamined Patent Publication No. 2000-182410 Japanese Unexamined Patent Publication No. 10-20215

In recent years, laser welding may be used to join a cover and a lamp housing. The cover joined to the lamp housing by laser welding is provided with mounting legs having a welding surface.
However, if the film adheres to the welded surface when the film is formed on the inner surface of such a cover, there is a problem that the bondability due to laser welding is lowered. Since vehicle lamps are exposed to the external environment such as wind and rain, particularly good bondability is required for welding the cover and the lamp housing.

Therefore, an object of the present invention is to prevent the formation of a film on the welded surface and to ensure good bondability between the cover and the lamp housing.

The cover of the lamp fixture for a vehicle according to the present invention covers the opening of the lamp housing having an opening, and when the coating film is formed on the surface facing the lamp housing, the pressing surface of the mask jig formed by electric casting presses against the cover. A main body having a film-forming surface on which the coating is formed and a welding surface on which the lamp housing is welded, and a film-forming surface and the welding surface protruding from the main body. A protective wall formed between the two is provided, and the pressing surface is pressed against at least a part of the protective wall when the coating film is formed.

As a result, the space between the film forming surface and the welding surface is covered with the pressing surface, and the paint forming the film does not adhere to the welding surface.

In the cover of a vehicle lamp according to the present invention described above, the end surface in the protruding direction of the protective wall is formed as the mask surface, said pushing surface during formation of the film is pressed against the entire surface of the object mask surface Is desirable.

As a result, the pressing surface is pressed against the entire surface of the masked surface, and the paint forming a film does not adhere to the entire surface of the masked surface.

In the cover of the vehicle lamp according to the present invention described above, it is desirable that the width of the protective wall is smaller than the width of the welded surface in the alignment direction of the film forming surface, the protective wall, and the welded surface.

As a result, it becomes difficult for the molten resin to be merged at the portion where the protective wall is formed, and the generation of weld lines on the protective wall is suppressed.

In the vehicle lamp cover according to the present invention described above, it is desirable that an uneven portion is provided on the outer peripheral portion of the film forming surface.

This makes it difficult to see the paint that has entered the outer peripheral portion.

According to the present invention, since the paint forming the film does not adhere to the welded surface, the bondability to the welded surface due to laser welding does not deteriorate, and good bondability between the cover and the lamp housing can be ensured.

2 to 11 show an embodiment of the present invention, and this figure is a cross-sectional view of a vehicle lamp. It is an enlarged sectional view which shows a part of a cover and a part of a mask jig. FIG. 5 is an enlarged cross-sectional view showing a state in which the cushioning material of the mask jig is pressed against the welding surface and the outer peripheral portion of the film forming surface. It is an enlarged cross-sectional view which shows the state which the film | film is formed on the film formation surface of a cover. It is an enlarged cross-sectional view which shows the state which the cushioning material of a mask jig is pressed against the whole surface of a welding surface. A modified example is shown together with FIGS. 7 and 8, and this figure is an enlarged cross-sectional view showing a part of a cover and a part of a mask jig. It is an enlarged cross-sectional view which shows the state which the mask jig is pressed against the welding surface. It is an enlarged cross-sectional view which shows the state which the mask jig is fitted to the mounting leg. It is an enlarged sectional view which shows a part of a cover having a protective wall and a part of a mask jig. It is an enlarged cross-sectional view which shows the state which the mask jig is pressed against the protective wall. It is an enlarged cross-sectional view which shows the state which the film | film is formed on the film formation surface of a cover.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the accompanying drawings.

<Structure of vehicle lighting equipment>
First, a schematic configuration of a vehicle lamp provided with the cover of the present invention will be described with reference to FIG.

The vehicle lamps 1 are attached and arranged at both left and right ends of the rear end of the vehicle body, for example.

The vehicle lamp 1 includes a lamp housing 2 having an opening and a cover 3 for closing the opening of the lamp housing 2. The end surface on the opening side of the lamp housing 2 is formed as a joint surface 2a to which a part of the cover 3 is brought into contact with each other and joined. The lamp housing 2 and the cover 3 form a lamp outer housing 4, and the internal space of the lamp outer housing 4 is formed as a lamp chamber 5. A reflector 6 and a light source 7 are arranged in the light chamber 5.

<Cover configuration>
Next, the configuration of the cover 3 joined to the lamp housing 2 will be described with reference to FIGS. 1 and 2.

The cover 3 is made of a resin material that is transparent to laser light, such as polycarbonate or acrylic.

The cover 3 has a main body portion 10 and mounting legs 11 projecting from the entire circumference toward the outer periphery of the main body portion 10 toward the lamp housing 2.

The main body 10 is formed in a plate shape, and is formed one size larger than the opening of the lamp housing 2. The main body portion 10 may be formed in a curved surface shape, for example, may be formed in a shape that bulges gently in a convex shape in front of the lamp.

A part of the inner surface 12 which is the surface of the main body 10 facing the lamp housing 2 side is formed as the film forming surface 13. The film-forming surface 13 is a region inside the mounting legs 11, and is a portion on which a film such as an anti-fog film is formed.

The mounting legs 11 are portions that are joined to the lamp housing 2 by laser welding, which will be described later.

The mounting legs 11 are formed in a rectangular shape in a cross-sectional shape including the optical axis of the vehicle lamp 1, and the surface facing the lamp housing 2 is formed as a substantially flat welding surface 11a. The welded surface 11a is a surface that is melted during laser welding and welded to the lamp housing 2.

In the mounting legs 11, a surface located between the welding surface 11a and the film forming surface 13 is formed as an inner step surface 11b, and a surface opposite to the inner step surface 11b with the welding surface 11a interposed therebetween is used as an outer step surface 11c. It is formed.

<Procedure for film formation and laser welding>
The procedure of forming a film on the cover 3 and joining the cover 3 and the lamp housing 2 by laser welding will be described below.

First, a procedure for forming a film on the film-forming surface 13 of the cover 3 will be described (see FIGS. 2 to 4).

When forming a film on the film forming surface 13, a mask jig 50 for preventing the film from adhering to the welding surface 11a is used (see FIG. 2).

The mask jig 50 is formed in an annular shape and has a foundation portion 51, a holding portion 52 continuously provided on the foundation portion 51, and a cushioning material 53 attached to the holding portion 52. In the mask jig 50, the base portion 51 and the holding portion 52 are integrally formed of a metal material.

The base portion 51 is formed in a plate shape and projects outward from the outer peripheral surface of the holding portion 52.

The holding portion 52 is formed in a concave shape opened on one side, and the surface forming the concave portion is formed as the jig inner surface 52a.

The cushioning material 53 is made of an elastically deformable material, for example, a silicone resin, and is attached to the inner surface 52a of the jig. A part of the cushioning material 53 is projected from the holding portion 52, and the end surface in the projecting direction is formed as the pressing surface 53a. The material of the cushioning material 53 is not limited to silicon resin, and other materials capable of elastic deformation when pressed, for example, fluororesin, urethane resin, rubber, or the like may be used.

The mask jig 50 configured as described above is used by pressing the cushioning material 53 against the cover 3.

When the cushioning material 53 of the mask jig 50 is pressed against the cover 3, a part of the pressing surface 53a is first pressed against the inner peripheral portion of the welding surface 11a. When the mask jig 50 is further pressed against the cover 3, the cushioning material 53 is deformed by the pressing, and the other part of the pressing surface 53a is pressed against the outer peripheral portion 13a of the film forming surface 13.

That is, in a state where the cushioning material 53 is pressed against the cover 3, the pressing surface 53a is pressed across at least a part of the welding surface 11a and a part of the film forming surface 13 (outer peripheral portion 13a). (See Fig. 3). By pressing the pressing surface 53a against the outer peripheral portion 13a of the film forming surface 13, the cushioning material 53 is surely adhered to the entire circumference of the inner peripheral portion of the welding surface 11a.

In this state, the coating film 100 is formed on the film forming surface 13 other than the outer peripheral portion 13a by spraying the paint on the film forming surface 13.

After the film 100 is formed on the film forming surface 13 as described above, the mask jig 50 is moved and separated from the cover 3 (see FIG. 4).

In a state where the mask jig 50 is separated, a parting portion 13b is formed on the outer peripheral portion 13a of the film forming surface 13. The parting portion 13b is a region where the pressing surface 53a is pressed when the coating film 100 is formed and the coating film 100 is not formed. Therefore, the appearance of the cover 3 can be improved by forming the parting portion 13b as a substantially equal width boundary portion 13c existing on the outer peripheral side of the film forming surface 13.

Subsequently, the procedure of laser welding for joining the cover 3 and the lamp housing 2 will be described.

First, the cover 3 is positioned so as to cover the opening of the lamp housing 2, and the welding surface 11a is brought into contact with the joint surface 2a of the lamp housing 2.

Next, the laser beam is irradiated, and the joint surface 2a and the welding surface 11a are melted and welded. The cover 3 and the lamp housing 2 are joined by welding the joining surface 2a and the welding surface 11a.

By the above procedure, a coating film 100 is formed on the cover 3, and the cover 3 and the lamp housing 2 are joined to each other.

As described above, in the cover 3 of the vehicle lamp 1, when the coating film 100 is formed, the pressing surface 53a of the cushioning material 53 is pressed so as to straddle at least a part of the welding surface 11a and a part of the film forming surface 13. Be done. As a result, the cushioning material 53 is brought into close contact with the inner peripheral portion of the welding surface 11a over the entire circumference, and the paint forming the coating film 100 which may reduce the bondability due to laser welding does not adhere to the welding surface 11a. Therefore, good bondability between the cover 3 and the lamp housing 2 by laser welding can be ensured.

In the cover 3 of the vehicle lamp 1, the pressing surface 53a may be pressed against the entire surface of the welding surface 11a when the coating film 100 is formed (see FIG. 5). As a result, the cushioning material 53 is brought into close contact with the entire surface of the welding surface 11a, so that it is possible to reliably prevent the paint from adhering to the entire surface of the welding surface 11a.

Further, in the cover 3 of the vehicle lamp 1, the area of the pressing surface 53a may be larger than the area of the welding surface 11a (see FIG. 5). As a result, the pressing surface 53a has a size that allows contact with the entire welding surface 11a, and the cushioning material 53 can be reliably adhered to the entire surface of the welding surface 11a.

Further, as described above, the cushioning material 53 is made of, for example, a silicone resin. Silicone resin has excellent deformability, a large elastic deformation region, and high adhesion to the contact surface. Therefore, by using the silicone resin as the cushioning material 53, high adhesion of the cushioning material 53 to the inner surface 12 of the cover 3 is ensured, and the paint is effectively prevented from entering between the cushioning material 53 and the welding surface 11a. can do.

The outer peripheral portion 13a of the film forming surface 13 may be provided with an uneven portion 13x such as a grain (see FIG. 4). As a result, even if the paint enters between the cushioning material 53 and the outer peripheral portion 13a when the coating film 100 is formed, the paint that has entered due to the light diffusing action of the uneven portion 13x is made difficult to see, and the appearance of the cover 3 is improved. Can be prevented from being impaired. The uneven portion 13x is shown only in FIG. 4 as an example.

<Modification example>
Subsequently, a modified example in which the mask jig 60 is used when forming the coating film on the cover 3 will be described (see FIGS. 6 and 7).

The mask jig 60 is formed in an annular shape by electroplating a metal material onto a mold. As the metal material, for example, an alloy containing nickel, cobalt and the like is used.

The mask jig 60 has a foundation portion 61 and an action portion 62 provided continuously on the foundation portion 61 (see FIG. 6).

The base portion 61 is formed in a plate shape and projects outward from the outer peripheral surface of the working portion 62.

The working portion 62 is formed in a concave shape opened on one side, and the surface forming the concave portion is formed as the working surface 63. As for the working surface 63, the inner peripheral side surface is formed as the inner working surface 63a, and the outer peripheral side surface is formed as the outer working surface 63b. Further, the working surface 63 is formed as a pressing surface 63c between the inner working surface 63a and the outer working surface 63b. The area of the pressing surface 63c is larger than the area of the welding surface 11a of the mounting legs 11.

The working portion 62 is provided with a protruding portion having an inner working surface 63a as a shielding protrusion 64.

The mask jig 60 configured as described above is used with the working surface 63 pressed against the cover 3.

In pressing, the pressing surface 63c is pressed against the entire surface of the welding surface 11a (see FIG. 7). At this time, the pressing surface 63c formed larger than the welding surface 11a is positioned so that the inner peripheral portion faces the outer peripheral portion 13a of the film forming surface 13 and covers the outer peripheral portion 13a, and the outer peripheral portion is from the mounting leg 11. It covers the outer covering surface 14 located on the outer peripheral side and located on the outer peripheral side of the mounting legs 11. The shielding protrusion 64 is located inside the inner step surface 11b and covers at least a part of the inner step surface 11b.

In this state, by spraying paint or the like on the film-forming surface 13, the film 100 is formed on the film-forming surface 13 other than the outer peripheral portion 13a.

After the film 100 is formed on the film forming surface 13 as described above, the mask jig 60 is moved and separated from the cover 3.

In a state where the mask jig 60 is separated, a parting portion 13b is formed on the outer peripheral portion 13a of the film forming surface 13. The parting portion 13b is a region where the coating film 100 is not formed because the adhesion of the paint is blocked by the shielding protrusion 64 when the coating film 100 is formed. Therefore, the appearance of the cover 3 can be improved by forming the parting portion 13b as a substantially equal width boundary portion 13c existing on the outer peripheral side of the film forming surface 13.

After the coating film 100 is formed as described above, the cover 3 and the lamp housing 2 are joined by the above-mentioned laser welding procedure.

In the cover 3 of the vehicle lamp 1 in this modification, the pressing surface 63c of the mask jig 60 formed by electroforming at the time of forming the coating film 100 is pressed against the entire surface of the welding surface 11a. Electroplating is excellent in dimensional accuracy, and the mask jig 60 can be formed so that the pressing surface 63c is in close contact with the welding surface 11a over the entire circumference. As a result, the pressing surface 63c is brought into close contact with the welding surface 11a over the entire circumference, and the paint does not adhere to the welding surface 11a. Therefore, good bondability between the cover 3 and the lamp housing 2 by laser welding can be ensured.

In the cover 3 of the vehicle lamp 1 in this modification, at least a part of the inner step surface 11b is covered with the shielding protrusion 64 in a state where the pressing surface 63c is pressed against the welding surface 11a. (See Fig. 7). As a result, since the inner stepped surface 11b of the mounting leg 11 is covered from the film forming surface 13 side by the shielding protrusion 64, it is possible to suppress the spraying of paint between the welding surface 11a and the pressing surface 63c.

The outer peripheral portion 13a of the film forming surface 13 may be provided with, for example, a concavo-convex portion such as a grain similar to the concavo-convex portion 13x shown in FIG. As a result, even if the paint gets into the outer peripheral portion 13a when the coating film 100 is formed, it is difficult to see the paint that has entered due to the light diffusing action of the uneven portion, and the appearance of the cover 3 is prevented from being spoiled. Can be done.

Further, in the above modification, the area of the pressing surface 63c is larger than the area of the welding surface 11a, but the pressing surface 63c uses a mask jig 60A formed to have the same size as the welding surface 11a. It may be good (see FIG. 8). The mask jig 60A is formed in a size and shape in which the working portion 62A is fitted to the mounting leg 11. Therefore, in the mounting legs 11, the welding surface 11a is in close contact with the pressing surface 63c, the inner step surface 11b is in close contact with the inner working surface 63a, and the outer step surface 11c is in close contact with the outer working surface 63b. As a result, a gap through which the paint may enter is not formed between the mask jig 60 and the mounting legs 11, so that the paint can be reliably prevented from adhering to the welding surface 11a.

<Another variant>
Next, with reference to FIGS. 9 to 11, a modified example in which the cover 8 joined to the lamp housing 2 is provided with a protective wall will be described.

The cover 8 is made of a resin material that is transparent to laser light, such as polycarbonate or acrylic (see FIG. 9).

The cover 8 has a main body portion 20 and a protective wall 21 projecting from the main body portion 20 toward the lamp housing 2.

The main body 20 is formed in a plate shape, and is formed one size larger than the opening of the lamp housing 2. The main body 20 may be formed in a curved shape, for example, may be formed in a shape that gently bulges forward of the lamp.

A part of the inner surface 22 which is a surface of the main body 20 facing the lamp housing 2 side is formed as a film forming surface 23 and a welding surface 24.

The film-forming surface 23 is a region located inside the protective wall 21, and is a portion on which a film such as an anti-fog film is formed. An uneven portion 23b such as a knurl is provided on the outer peripheral portion 23a of the film forming surface 23.

The welding surface 24 is a region located outside the protective wall 21, and is a portion joined to the lamp housing 2 by laser welding, which will be described later.

The protective wall 21 is formed, for example, in a rectangular shape in a cross-sectional shape including the optical axis of the vehicle lamp 1. The width of the protective wall 21 is smaller than the width of the welding surface 24 in the arrangement direction of the film forming surface 23, the protective wall 21, and the welding surface 24. Further, the height of the protective wall 21 is higher than that of the welding surface 24 in the direction orthogonal to the alignment direction.

The end surface of the protective wall 21 on the lamp housing 2 side is formed as a masked surface 21a. The masked surface 21a is a surface on which a mask jig, which will be described later, is pressed when the film is formed. In the protective wall 21, the surface located between the masked surface 21a and the film forming surface 23 is formed as an inner wall surface 21b. The surface opposite to the inner wall surface 21b with the masked surface 21a sandwiched is formed as the outer wall surface 21c. The width of the masked surface 21a is smaller than the height of the inner wall portion 21b and the outer surface wall portion 21c, and the protective wall 21 is formed in a substantially rectangular shape in which the height is larger than the width in the cross-sectional shape including the optical axis.

The procedure for forming a film on the film-forming surface 23 of the cover 8 will be described below.

When forming a film on the film forming surface 23, a mask jig 70 for preventing the film from adhering to the welding surface 24 is used (see FIG. 9).

The mask jig 70 is formed in an annular shape by electroplating a metal material onto a mold. As the metal material, for example, an alloy containing nickel, cobalt and the like is used.

The mask jig 70 has a foundation portion 71, an action portion 72 continuously provided on the foundation portion 71, and a covering protrusion 73 continuously provided on the action portion 72 (see FIG. 9).

The base portion 71 is formed in a plate shape and projects outward from the outer peripheral surface of the working portion 72. One surface of the foundation portion 71 is formed as a protective surface 74.

The working portion 72 is formed in a concave shape opened on one side, and the surface forming the concave portion is formed as the working surface 75. The inner peripheral surface of the working surface 75 is formed as the inner surface 75a, and the outer peripheral surface is formed as the outer surface 75b. In the working surface 75, the surface located between the inner surface 75a and the outer surface 75b is formed as a pressing surface 75c.

The covering protrusion 73 projects inward from the inner peripheral surface of the working portion 72 opposite to the base portion 71. An uneven concave-convex fitting portion 73a is formed on one surface of the covering protrusion 73. The uneven fitting portion 73a is formed in a shape that fits with the uneven portion 23b of the cover 8.

The mask jig 70 configured as described above is used by pressing at least a part of each of the protective surface 74 and the working surface 75 against the cover 8.

In pressing, at least a part of the protective surface 74 is pressed against the welding surface 24, and at least a part of the working surface 75 is pressed against the protective wall 21. At this time, the pressing surface 75c is pressed against the masked surface 21a (see FIG. 10). The inner side surface 75a and the outer side surface 75b of the working surface 75 are in close contact with the inner wall surface 21b and the outer wall surface 21c of the protective wall 21, respectively.

Further, in pressing, the covering protrusion 73 is positioned so as to face the outer peripheral portion 23a of the film forming surface 23. At this time, the concave-convex fitting portion 73a is fitted to the concave-convex portion 23b.

In this state, by spraying paint or the like on the film-forming surface 23, the film 100 is formed on the film-forming surface 23 other than the outer peripheral portion 23a (see FIG. 11).

After the film 100 is formed on the film forming surface 23 as described above, the mask jig 70 is moved and separated from the cover 8.

In a state where the mask jig 70 is separated, a parting portion 23c is formed on the outer peripheral portion 23a of the film forming surface 23. The parting portion 23c corresponds to a region where the uneven portion 23b is provided, and is a region where the coating film 100 is not formed because the coating protrusion 73 blocks the adhesion of the paint when the coating film 100 is formed. Therefore, the appearance of the cover 8 can be improved by forming the parting portion 23c as a substantially equal width boundary portion 23d existing on the outer peripheral side of the film forming surface 23.

Subsequently, the procedure of laser welding for joining the cover 8 and the lamp housing 2 will be described.

First, the cover 8 is positioned so as to cover the opening of the lamp housing 2, and the welding surface 24 is brought into contact with the joint surface 2a of the lamp housing 2.

Next, the laser beam is irradiated to melt the joint surface 2a and the welded surface 24, and the joint surface 2a and the welded surface 24 are welded. The cover 8 and the lamp housing 2 are joined by welding the joining surface 2a and the welding surface 24.

By the above procedure, the film 100 is formed on the cover 8, and the cover 8 and the lamp housing 2 are joined to each other.

Although the configuration in which the concave-convex fitting portion 73a is fitted to the uneven portion 23b is shown above, the concave-convex fitting portion 73a is not fitted to the concave-convex portion 23b, and the outer peripheral portion is formed from the direction facing the outer peripheral portion 23a. It may be positioned so as to cover 23a.

Further, above, when the mask jig 70 is pressed against the cover 8, the inner side surface 75a and the outer side surface 75a of the working surface 75 are in close contact with the inner wall surface 21b and the outer wall surface 21c of the protective wall 21, respectively. However, the inner side surface 75a and the outer side surface 75b of the working surface 75 may be located on the side of the inner wall surface 21b and the outer wall surface 21c of the defense wall 21, respectively, and may be configured to cover the defense wall 21 from the side.

As described above, in the cover 8 of the vehicle lamp 1, the pressing surface 75c is pressed against at least a part of the protective wall 21 when the coating film 100 is formed. As a result, the space between the film forming surface 23 and the welding surface 24 is covered with the pressing surface 75c, and the paint forming the coating film 100 which may reduce the bondability due to laser welding does not adhere to the welding surface 24. Therefore, good bondability between the cover 8 and the lamp housing 2 by laser welding can be ensured.

Further, in the cover 8 of the vehicle lamp 1, the pressing surface 75c is pressed against the entire surface of the masked surface 21a of the protective wall 21 when the coating film 100 is formed (see FIG. 10). As a result, the pressing surface 75c is pressed against the entire surface of the masked surface 21a, and the paint forming a film does not adhere to the entire surface of the masked surface 21a. Therefore, the paint forming the coating film 100 is surely prevented from entering the welding surface 24 side through the gap between the mask jig 70 and the protective wall 21.

Further, in the cover 8 of the vehicle lamp 1, the width of the protective wall 21 is shorter than the width of the welded surface 24 in the arrangement direction of the film forming surface 23, the protective wall 21, and the welding surface 24. As a result, it becomes difficult for the molten resin to be merged at the portion where the protective wall 21 is formed during the molding of the cover 8, and the generation of weld lines on the protective wall 21 is suppressed.

Furthermore, an uneven portion 23b is provided on the outer peripheral portion 23a of the film forming surface 23. As a result, even if the paint gets into the outer peripheral portion 23a when the coating film 100 is formed, the paint that has entered is made difficult to see due to the light diffusing action of the uneven portion 23b, and the appearance of the cover 8 is prevented from being spoiled. be able to.

Although FIG. 9 shows an example in which the uneven portion 23b is formed on the cover 8, the uneven portion 23b may not be formed on the cover 8. In this case, the uneven fitting portion 73a is not formed on the covering protrusion 73. Therefore, the structure of the cover 8 and the mask jig 70 can be simplified, and the manufacturing cost of the cover 8 and the mask jig 70 can be reduced.

Further, in the cover 8 of the vehicle lamp 1, a welding table that protrudes from the welding surface 24 and is lower than the height of the welding surface 21 in a direction orthogonal to the alignment direction of the film forming surface 23, the protective wall 21, and the welding surface 24. May be formed. In this case, it becomes difficult for the molten resin to be merged at the portion where the welding table is formed during molding of the cover 8, and the generation of weld lines is suppressed also on the welding surface 24. As a result, good bondability between the cover 8 and the headlamp 2 can be ensured.

1 ... Vehicle lighting equipment, 2 ... Lamp housing, 3 ... Cover, 8 ... Cover, 11 ... Mounting leg, 11a ... Welding surface, 11b ... Inner step surface, 13 ... Film forming surface, 13a ... Outer circumference, 21 ... Defensive wall , 23 ... film forming surface, 23a ... outer peripheral part, 24 ... welding surface, 50 ... mask jig, 53a ... pressing surface, 60 ... mask jig, 63c ... pressing surface, 64 ... shielding protrusion, 60A ... mask jig , 70 ... Mask jig, 73 ... Shielding protrusion, 75c ... Pressing surface

Claims (4)

A cover for a vehicle lamp that covers the opening of a lamp housing having an opening and is pressed against a pressing surface of a mask jig formed by electric casting when a coating is formed on a surface facing the lamp housing.
A main body having a film-forming surface on which the film is formed and a welded surface on which the lamp housing is welded,
It is provided with a protective wall protruding from the main body and formed between the film forming surface and the welding surface.
A cover for a vehicle lamp in which the pressing surface is pressed against at least a part of the protective wall when the coating film is formed. The end face in the protruding direction of the protective wall is formed as a masked surface.
When the coating is formed, the pressing surface is pressed against the entire surface of the masked surface.
The cover for the vehicle lamp according to claim 1. The width of the protective wall was made smaller than the width of the welding surface in the alignment direction of the film forming surface, the protective wall, and the welding surface.
The cover for the vehicle lamp according to claim 1 or 2. An uneven portion is provided on the outer peripheral portion of the film forming surface.
The cover for the vehicle lamp according to claim 1, claim 2 or claim 3.

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