JPS5825002A - Manufacture of lamp apparatus for vehicle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a novel method for manufacturing a vehicular lamp.

The idea is to manufacture vehicle lamps equipped with drainage holes, and the drainage hole can be hidden immediately after the lamp is assembled, and the drainage hole can then be formed with a simple operation. This is what we are trying to do.

2. Description of the Related Art In vehicle lamps, a water drain hole is often provided because it is necessary to drain water that has entered the lamp outside the lamp. Figure 7 shows the main parts of a conventional vehicular lamp having such a water drain hole. Reference numeral 6 denotes a lamp body, and an opening 7 is formed in the opening thereof. C is a lens arranged to cover the front surface of the lamp body.

d is a rim body interposed between the lamp body 6 and the lens 0, and a groove facing the front for attaching the lens C.
and a wall f projecting toward the 7th flange b of the lamp body 6. A notch is formed at an appropriate location on the rear edge of the wall f. A is a seat backing, which is attached to the 7 langes b of the lamp body S in an externally fitted manner. Thus, the rear edge of the lens C is fitted into the groove of the rim d and bonded with the adhesive j, and the rear end of the wall I of the rim d is inserted into the groove of the rim d through the sheet backing. It is in contact with the front surface of 7 langes b of the lamp body S, and is fixed to the lamp body by an appropriate means such as screw tightening or adhesion. Note that h is the vehicle body.

When the lamp is assembled as described above, there is a notch between the rim body d and the lamp body flange b! Thus, a drain hole is formed that communicates the inside and outside of the lamp space defined by the lamp body and the lens C. The water drain hole fK allows water that has entered the interior of the lamp to be drained out of the lamp.

However, on the other hand, airtightness tests are performed on vehicle lamps. In that case, if a drainage hole is formed, the airtightness inside the lamp will be impaired at that part, making it impossible to perform the airtightness test.

The present invention has been made in view of the above circumstances, and provides a nine-vehicle lamp comprising a lamp body, a lens that opens the front opening of the lamp body, and a rim body arranged to surround the lens. In manufacturing, the part that will become the water drain hole is made into a thin wall part in advance, and after the lamp is assembled, the Ki1* thin wall part is pierced to form the water drain hole.

Hereinafter, details of the method for manufacturing a vehicle lamp according to the present invention will be explained according to illustrated embodiments.

FIG. 2 is a sectional view of the main parts of a vehicle lamp manufactured by the method of the present invention immediately after assembly. / is a lamp body made of synthetic resin, and an outwardly protruding 7/jiko is integrally formed on the opening edge of the lamp body 1. 3
is a lens arranged to cover the front surface of the lamp body, and is made of transparent synthetic resin. The frame is a rim body made of synthetic resin, and a mounting hole opening toward the front is formed at a position closer to the inside, and a wall body 6 is integrally formed toward the rear. A thin portion 7 is formed at a suitable location on the rear edge of the wall 6, which is thinner than other portions and can be easily torn in the center. t is a seat backing, which is attached to the 7 range of the lamp body l in an externally fitted manner. 9 is the vehicle body.

This vehicle lamp is assembled as follows. The rear edge of the lens 3 is placed in the mounting groove j of the rim body, and is fixed with an adhesive 10K. Thereafter, the rear end of the wall 6 of the rim body is brought into contact with the front surface of the lamp body through the seat backing T, and in this state, the rim body is fixed to the lamp body I. Although not shown, the rim body DA may be fixed to the lamp body l by various suitable means such as screw tightening, caulking, adhesive, etc.

In the vehicle lamp assembled as described above,
The lamp body 11, the rim body 11, and the lens 3 are combined in a completely airtight state, so that they can be subjected to an airtightness test.

Then, for the vehicle lamp that has undergone the density test, a rod-shaped jig // having a diameter slightly smaller than the size of the thin-walled portion 7 formed on the rim body 4 is prepared, and the thin-walled portion is removed using this rod-shaped jig //. Break through hole 7 and use it as a drainage hole.

As is clear from the above description, in the method for manufacturing a vehicle lamp of the present invention, a lamp body, a lens that covers the front opening of the lamp body, and a rim body that distributes power so as to surround the front lens. In the manufacture of vehicle lighting equipment, the part that will become the water drain hole is made into a thin part in advance,
After assembling the light fixture, the thin core part is pierced to form a drain hole, so the light fixture can be subjected to an airtightness test immediately after assembly, and the drain hole can be easily created afterwards. I can do it.

Although nine embodiments have been described above in which the rim body is provided with a thin wall portion, the present invention is not limited to this, and it is of course possible to provide a thin wall portion that serves as a water drain hole on the lens or lamp body. It is.

[Brief explanation of the drawing]

FIG. 7 is a sectional view of the main parts of an example of a conventional vehicle lamp;
FIG. 2 is a sectional view of a main part showing an example of a vehicle lamp manufactured by the method of the present invention, and FIG. 3 is a perspective view showing a thin part. Explanation of symbols 1... Lamp body, 3... Lens, Reference... Rim body, 7... Thin wall part Figure 2

Claims (1)

[Claims] (c) In the manufacture of a vehicle lamp that includes a lamp body, a lens that covers the front opening of the lamp body, and a rim body that is arranged to surround the lateral lens, the part that will become the water drain hole is made in advance by forming a thin wall part. A method for manufacturing a vehicle lamp, characterized in that after the lamp is assembled, the thin wall portion is pierced to form a drain hole.