JPS58206002A - Method of bonding lamp implement - 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 method of bonding a lens and a housing of an automobile lamp.

Conventional methods for bonding lamps include, for example, the methods shown in Figures 1 to 5.
There is something like the one shown in the figure. Lens l and housing, 2
There is a U-shaped groove around the housing 2 to secure it. After forming the housing 2 on the jig 6 and pouring hot melt adhesive into the groove 2a with the application nozzle 7, press the lens l in the direction of the arrow as shown in Figure 1. Put the lipstick into the adhesive 3 and glue it.9
is a positioning protrusion protruding from the lip T. In the figure, ``da'' indicates an umbrella body, and ``j'' indicates a seal gasket.

However, in such a conventional method of gluing a lamp, the adhesive 3 is applied to the housing 2 and then the lens l is attached.
Because it was a method of fixing
For lamps with a long length a, the temperature difference between the beginning and end of applying the adhesive 3 will be large, and at the beginning the adhesive 3 will harden and become difficult to adhere, and in some cases, it will not be possible to adhere. 0 Also, there is water and debris on the outside of the seal lip.
There was a problem that mud etc. got in there and it got dirty.

This invention was made to address these conventional problems.The lens and housing? The purpose is to solve the problem of J:K by applying adhesive after combining.

The present invention will be explained below based on the drawings.

FIG. 4 is a diagram showing the first embodiment of the present invention. First, to explain the assembly method, the lens io and the housing/
The adhesive groove /3 formed by the free end 10fL of the lens 10 and the stepped portion //a of the housing // is assembled by determining the position with the positioning protrusion /l protruding from the housing //.
．． The hot melt adhesive 12 is poured into the coating nozzle (not shown).The positioning protrusion l is provided in the adhesive groove 13 at a location where it will not be affected.

Next, the action will be explained.

In this method, since the positioning protrusion /U is located at a location other than the adhesive #1I13, the adhesive 12 is not scraped by the positioning protrusion IIt etc., so there is no breakage of the adhesive 12. lens 70
Since the housing and the housing // are pre-assembled and the adhesive #1/J is open to the outside, the length of the adhesive groove 13 is narrow (even if the length of the adhesive groove 13 is between the adhesive poured first and the adhesive poured after the ant). The conditions are the same as that of the adhesive 12, and therefore a stable adhesive effect can be obtained.Furthermore, since the adhesive @ t3 is provided near the outermost side of the lamp, there is no part where water, sludge, or mud can enter, so it does not get dirty.

FIG. 7 shows a second embodiment of the present invention.
1li/7 is made into a stepped shape, and the housing /l and the end inner surface /
A contact agent t2 is applied to the contact layer fg20 formed in relation to the contact layer fg20.lq is a positioning protrusion projected from the housing/l.

The figure shows a third embodiment of the present invention, in which an adhesive t2 is applied between the housing 2/ and the adhesive #13 formed by the positioning protrusion υ of the lens U.

FIG. 9 shows a first embodiment of the present invention, in which adhesive is applied and inserted into the adhesive groove 2g formed by the stepped part of the housing and the lens 27. Reference numeral 29 denotes a positioning projection protruding from the housing 2S.

FIG. 10 shows a fifth embodiment of the present invention. A V-shaped wrap 32 is formed by the lens 31 and the adhesive l.
is applied. Is 33 a housing? It is a positioning protrusion formed in O.

Figure 1/Figure 1 is the embodiment of the present invention;
The lens 36 is placed in the recess 33 of the housing ? Adhesion #I formed by μ and lens 36? 7. Adhesive agent/,
l is filled in.

Fig. 1 shows a seventh embodiment of the present invention, in which the end of the lens tio is brought into contact with the inner surface of the end 39, which is a positioning protrusion, of the housing 3g for positioning, and the lens tio protrudes from the end 1/. The adhesive 12 is applied between the adhesive grooves λ formed together with the nousing 31.

FIG. 73 shows the rth embodiment of the present invention, in which the nousing/
An adhesive l is applied to the adhesive groove j formed by the lens I and the end ++ of the lens element 3.

FIG. 1q shows a ninth embodiment of the present invention, in which the above-mentioned
An adhesive 12 is applied to the adhesive groove t from the end 4I7 of the lens II6.

As explained above, according to the present invention, a stable adhesion state with the following effects can be obtained. ■There is no part to get dirty as there is no intrusion of water, scum, mud, etc.

■No jigs or tools are required to hold the lens in place. ■、O that can be bonded under the same conditions even with large lamps.

[Brief explanation of the drawing]

Figures 1 to 5 show the bonding structure of a conventional lamp; Figure 1 is a sectional view of the lamp assembled on a car body; Figures 2 and 3 are explanatory diagrams of the order of assembling the lens to the nozzle; 5 and 5 are perspective views of the lens when the rib 1 is positioned and the protrusion 9 is formed, and a view corresponding to FIG. 1, and FIGS. 4 to a show the first to ninth embodiments of the present invention. FIG. 1 is a sectional view corresponding to FIG. /, 10. Noro, 2, 27. 3/,
36. Ilo, da3, 16...lens, 2. //, tza, 2/, ,2j, ? 0
．． M, 3K...Housing, 9. /hat lq, υ,
29.3J, 39. IIt...Positioning protrusion, 2a, /J, ,20. No41. :
1. T, 3 pieces, 17°#, 2. 4It, 4Ir
...adhesive groove, 3. /2・-Adhesive. i,′,,),:, ,,,t,,,. Answer 5 Illustration `` Recruitment 7 Illustration Jo S drawing etc. 9M Book 〃Medren 1 Zusento area

Claims (1)

[Claims] A positioning protrusion formed on one of the housing and the lens that comes into contact with the other to assemble the housing and the lens, and after the assembly, an adhesive groove that is formed by the housing and the lens and is spaced apart from the positioning protrusion. A method for bonding a lamp, characterized by solidifying a housing and a lens by pouring an adhesive into the lamp.