JPS6330113Y2 - - Google Patents

Description

[Detailed description of the invention] Generally, the filament position accuracy of a halogen bulb is poor, and there are considerable variations in the vertical, front-back, and left-right directions. However, when this halogen bulb is mounted in a holder and attached to a reflector, the filament must always be at a constant position relative to the reflector due to the focal point of the reflector. Therefore, although the holder section is provided with an adjustment allowance for adjusting the mounting position of the halogen bulb body with respect to the holder section, there are drawbacks in that it is complicated and the accuracy thereof is insufficient. Also, if an adjustment allowance is provided for the halogen lamp itself, for example, when used in an automobile, the vibration will cause the halogen bulb to shift, causing the focal point of the reflector to shift from the position of the filament, making it unusable. The drawback was that it disappeared.

Furthermore, since the holder portion of the conventional halogen bulb was assembled from a large number of parts, processing and assembly were time-consuming and the assembly accuracy was also poor.

The present invention was devised in view of the drawbacks of the conventional examples, and its purpose is to eliminate the need for position adjustment of the halogen bulb body and the fear of misalignment due to vibration, and to assemble and process it in one step. Our goal is to provide extremely high-precision halogen lamps.

Hereinafter, the present invention will first be described in detail according to a first embodiment shown in FIG. The halogen bulb body 6 is, for example, an automobile bulb called H4, and has two filaments 12 and a reflector 13, and is supported by three balls 14, and the pole 14 is fixed with a pinch seal part 15. has been done. Three plug blades 10 are provided corresponding to the poles 14, and are approximately in the shape of an inverted L. The reflecting mirror 7 is a concave mirror, and has a through hole 16 bored in its center, and a mounting cylinder part 8 formed on the convex side of the edge of the through hole 16. A notch 17 is provided in a part of the mounting tube 8, into which a rotation preventing protrusion 18 provided on the holder 3, which will be described later, is fitted. Thus, the drawn-out portion of the pole 14 of the halogen bulb body 6 and the plug blade 10 are connected with the lead wires 11, respectively. Next, the plug blades 10 are attached to a split mold (not shown) for molding the holder part 3 at predetermined positions and intervals, and the filament 12 is
Align the positions of the plug blades 10 with these plug blades 10 and attach them to the split mold in the same manner to set the split mold for molding. Then, a space for molding the holder part is created between the plug blade 10 and the halogen bulb body 6, and a molding material is injected into the space to mold the holder part 3. In addition, at this time, it is necessary to make the lead wires 11 long enough so that they do not come into contact with each other. When the holder part 3 is molded and taken out, the halogen bulb body 6 is placed on the top of the holder part 3, and the plug blade 10 is placed on the top of the holder part 3.
is planted on the bottom, making it an integrated object.
As shown in the figure, the holder part 3 has a shape in which a protrusion 2 having a smaller diameter than the base 1 protrudes from the center of the top surface of a base 1 having a large diameter, and the periphery of the protrusion 2 forms a step 5 for positioning. Further, as shown in FIG. 5, a semicircular anti-rotation protrusion 18 is protruded from one corner of the positioning step 5. Here, the split mold is formed so that the distance from the upper surface of the base 1 to the filament 12 is a predetermined dimension L. Further, the halogen bulb body 6 is positioned so that the center line 21 passing through the filament 12 also coincides with the center line 21' of the holder portion 3. Furthermore, a groove 19 is formed in the outer periphery of the base 1, and an O-ring 20 is fitted into the groove 19. Then, insert the protrusion 2 of the holder part 3 into the mounting cylinder part 8 of the reflector 7 so that the halogen bulb body 6 is located on the concave side, fit the anti-rotation protrusion 18 into the cutout part 17, and then insert the protrusion 2 into the mounting cylinder part 8. The abutting part 9, which is the edge of the opening 8, is brought into contact with the positioning step part 5 to keep the insertion distance 5 constant.
This automatically determines the relationship between the reflecting mirror 7 and the filament 12. Next, the plug blade 10 is inserted into the external socket 4 against the pressure of the O-ring 20, and the plug blade 10 is inserted into the receiving blade 2.
Insert into 2. When electricity is applied, the halogen bulb body 6 lights up, and the light is reflected by the reflecting mirror 7 to accurately illuminate a predetermined position. Furthermore, when the vehicle is driven in the rain, the O-ring 20 prevents rainwater or muddy water from entering the external socket 4.

Further, an O-ring 23 may be interposed between the protrusion 2 and the mounting cylinder 8, and in this case, rainwater or muddy water will not enter into the reflecting mirror 7. Like this O
It is preferable that the rings 20 and 23 be interposed in both of them, but it is of course possible to use only one of them. FIG. 2 shows an example using the adapter 24.
The pinch seal portion 15 of the halogen bulb body 6 is attached and fixed to the adapter 24, and the holder portion 3 is insert-molded in the same manner as described above. FIG. 3 shows another embodiment in which an abutting portion 9 is formed by cutting off the inner circumferential surface of the mounting tube portion 8 of the reflecting mirror 7, and this abutting portion 9 is brought into contact with the positioning step portion 5. The insertion distance S is determined using the method shown in FIG. Also, a recess 25 is provided at the base of the holder part 3.
An external socket 4 is fitted into the recess, and an O-ring 23 is used to make it waterproof.

In addition, as mentioned above, since the halogen bulb body 6 and the plug blade 10 are integrally implanted in the holder part 3, water cannot enter into the current-carrying part, and this itself is extremely waterproof. Moreover, the groove 1 for the O-rings 20 and 23 whose holder part 3 is made of molded material
It is also an advantage that 9 is extremely easy to form.

As mentioned above, in this invention, the halogen bulb body and plug blade connected by lead wires are implanted in the integrally molded holder part, so the halogen bulb can be made by ordinary insert molding. , parts processing and assembly work can be completely omitted, resulting in a significant cost reduction.At the same time, since the halogen bulb body is integrally implanted in the holder, it has the advantage that it will not go awry even when exposed to external vibrations. be. Furthermore, adjust the distance between the top surface of the base and the filament to a predetermined dimension, place the halogen bulb body on the top surface of the protrusion, and place the halogen bulb body on the concave side of the reflector in the mounting tube of the reflector. The socket part is inserted into the mounting cylinder part, and the abutment part provided on the mounting cylinder part is brought into contact with the positioning step part, so as long as the abutment part is brought into contact with the positioning step part, the reflector and filament are automatically connected. This has the advantage that the relative positional relationship between the two is determined and high-precision assembly can be realized without position adjustment work.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of the first embodiment of the present invention, and the second
The figure is a partial longitudinal sectional view of the example shown in Fig. 1 with an adapter attached, Fig. 3 is a longitudinal sectional view of the second embodiment of the present invention, and Fig. 4 is a partial longitudinal sectional view of the example shown in Fig. 3 with an adapter attached. A partial vertical cross-sectional view of the example, and FIG. 5 is a cross-sectional view taken along the line X-X in FIG. , 6 is a halogen light bulb body, 7 is a reflecting mirror, 8 is a mounting cylinder, 9 is an abutment, 10 is a plug blade, 11 is a lead wire, 12 is a filament, and 16 is a through hole.

Claims (1)

[Scope of utility model registration request] A protrusion with a smaller diameter than the base is integrally protruded on the top surface of the base to form a holder part for attaching an external socket, and the top surface of the base is used as a positioning stepped part to connect the top surface of the base and the filament. A halogen bulb body whose spacing is adjusted to a predetermined size is planted on the top surface of the protrusion, a through hole is bored in the center of the concave reflector, a mounting tube is provided protruding from the edge of the hole on the convex side, and a holder section is installed. An abutment part is formed on the mounting cylinder part to determine the insertion distance into the mirror, and the holder part is inserted into the mounting cylinder part so that the halogen bulb is positioned on the concave side of the reflector.A step part for positioning is attached to the abutment part. A halogen lamp characterized in that the plug blade, which is placed in contact with the base of the base to determine the insertion allowance of the holder part, and the halogen bulb body are connected by a lead wire.