JPH0331003Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the modification of the assembly structure of a halogen lamp, and more specifically, the inner surface of the cylindrical base body 1 whose upper surface is open is inclined toward the bottom and has elasticity. An outer flange 3 is provided horizontally to protrude from the outer surface of the cap body 1, and is inclined from the outer surface of the cap body 1 toward the outer flange 3, and has elasticity. A clamping tongue piece 4 is provided protrudingly, a through hole 6 larger than the outer diameter of the mouthpiece body 1 is bored in the position adjustment plate 5, and the mouthpiece body 1 is inserted into the through hole 6 so that the edge of the through hole 6 is aligned. The lamp is clamped between the outer flange 3 and the clamping tongue 4, the position adjustment plate 5 is fixed to the outer flange 3, the pinch seal part 7 that protrudes from the bulb body A is inserted into the opening 8 of the base body 1, and the lamp is clamped. This relates to an assembly structure of a halogen lamp characterized in that a pinch seal portion 7 is held between a projection piece 2.

In the _H3 halogen lamp for automobiles, the height from the position adjustment plate 5' to the filament (not shown) of the bulb body A' is determined, and the height of the position adjustment plate 5' is determined based on the focal position. There are constraints such that the filament must be located in the center.
Therefore, as shown in FIG. 6, in the conventional example, two protruding ridges 9' are projected inward from the mouthpiece body 1' in parallel along the longitudinal direction on both sides of the mouthpiece body 1'. Light bulb inserted into opening 8' of 1'
It was designed to hold the pinch seal portion 7' of A'. However, since the pinch seal portion 7' of the bulb body A' is formed into a plate shape by heating the glass tube to a high temperature and pressing and crushing it with a pincher, there may be variations in size and shape, and there may be some variation in the ridge portion 9'. If the thickness of the pinch seal part 7' is large due to lack of elasticity, it will be difficult to insert it into the mouthpiece body 1', and conversely, if the thickness of the pinch seal part 7' is small, the ridge will The holding force of the pinch seal portion 7' by the mouthpiece body 1' became weak, and there were variations in the holding force of the pinch seal portion 7' by the mouthpiece body 1'. Further, as mentioned above, the filament must be located at the center of the position adjustment plate 5' due to the focal point, but in order to do so, the position adjustment plate 5' must be moved back and forth, right and left, and the filament and the position adjustment plate 5' must be moved in the same direction. Once the relative position has been determined, the outer flange 3' of the base body 1' must be spot welded to the hole edge of the position adjustment plate 5'. However, if the position adjustment plate 5' is completely free from the mouthpiece body 1' (in other words, if there is no mechanism for temporarily fixing the position adjustment plate 5' to the mouthpiece body 1'), it is impossible to keep both in the welding position until welding is complete. The disadvantage is that the work is very difficult because the positioning plate 5' must be held in place, and the positioning plate 5' may tilt depending on the way the clamping force is applied to the positioning plate 5' and the outer flange 3' during spot welding. There were some drawbacks as well.

The present invention was devised in view of the drawbacks of the conventional examples, and its purpose is to make it possible to easily and uniformly attach the bulb body to the cap body and adjust the position, and to use the position adjustment plate during spot welding. To provide an assembly structure for a halogen lamp that does not cause the lamp to tilt.

The present invention will be described in detail below with reference to illustrated embodiments.
As shown in Fig. 1, the cap body 1 is made by bending the edges of both halves of a long and thin plate to form a substantially U-shape, and also bending the center part into a U-shape. It is formed into a cylindrical shape with an opening at the top and a bottom. On both sides of the upper half of the cap body 1, there are lamp holding protrusions 2 facing inward.
It has been carved out. . The tip of the lamp holding protrusion 2 is formed to be sloped downward toward the bottom. The lamp holding protrusion 2 has elasticity, and as shown in Fig. 3b, one corner of the tip is formed at an obtuse angle, the other corner is formed at a right angle, and the tip is slightly thinner than the base. It has been formed. In this embodiment, the lamp holding protrusions 2 are formed at four locations on one side, but of course the number is not limited to this, and the number may be one on each side, two on the top and bottom, or more. As shown in FIG. 3b, the lamp holding protrusion 2 is engaged with the ear portion 11 of the pinch seal portion 7. An outer flange 3 is provided below the lamp holding protrusion 2 to protrude outward. Further, a clamping tongue piece 4 is cut and raised on the outside of the cap body 1 between the outer flange 3 and the lamp clamping protrusion 2, and the tip of this clamping tongue piece 4 extends downward toward the outer flange 3. It is formed on a slope,
Like the lamp holding protrusion 4, it has elasticity. In this embodiment, the clamping tongue piece 4 is provided on the outer flange 3, but of course it is not limited to this, and may be provided under the outer flange 3, and in that case, the clamping tongue piece 4 is also provided. It is formed in an upward slope so that the tip faces the outer flange 3. A first through hole 1 into which a welding electrode (not shown) is inserted is formed on the side surface of the lower half of the base body 1.
2. A second through hole 13 and a third through hole 14 are bored, and a part of the side surface of the cap body 1 is cut inward in an L-shape in line with the third through hole 14. A welding tongue piece 15 is formed, and a part of the side surface of the mouthpiece body 1 is provided inwardly to protrude in alignment with the first through hole 12 to form a welding protrusion 16. be. Also,
A cord lead-out hole 17 is provided at the bottom of the base body 1. In this embodiment, the position adjustment plate 5 has a simple disk shape, and has a rectangular through hole 6 bored in the center.
In this embodiment, the short side of the through hole 6 is formed to be approximately equal to the short side of the base body 1, and the long side of the through hole 6 is formed to be larger than the long side of the base body 1, so that the base body 1 can be passed through. Although the cap body 1 is designed not to open when inserted into the hole 6, it is of course not limited to this.
The short side of the through hole 6 may be made larger than the short side of the base body 1. The lower end of the light bulb A is pinch-sealed, and a molybdenum metal foil 18 is embedded in the pinch-sealed portion 7. The molybdenum metal foil 18 has an internal lead rod 19 and an external lead rod 20.
A filament is installed on the inner lead rod 19, and the outer lead rod 20 is led out from the pinch seal portion 7. As can be seen from FIG. 3, the pinch seal part 7 has large thick ears 11 on both side edges, and the lamp holding protrusion 2 is fitted between the ears 11. The bulb body A can be moved linearly using the portion 11 as a guide. Then, insert the cap body 1, which is bent into a rectangular tube shape, into the through hole 6 of the position adjustment plate 5, and use the outer flange 3 and the clamping tongue piece 4 to adjust the opening of the through hole 6 of the position adjustment plate 5. Grasp the edges and temporarily secure. After doing this, determine the insertion depth of the pinch seal part 7 into the mouthpiece body 1, adjust the height from the position adjustment plate 5 to the filament to the specified value, and at the same time slide the position adjustment plate 5. Adjust so that the filament is located at the center of the position adjustment plate 5. During this time, the position adjustment plate 5 is held by the elastic force of the holding tongues 4. Once the relative position between the filament and the position adjustment plate 5 is determined, the outer flange 3 and the position adjustment plate 5 are spot welded. Next, one side of the external lead rod 20 is an L-shaped welding tongue piece 15.
The other external lead rod 20 is spot welded to a metal ring 21 coated on the tip of a pull-out cord 22. This pull-out cord 22 is further spot-welded to a welding protrusion 16 formed on the inner surface of the base body 1, so that the external force applied to the pull-out cord 22 is not applied to the external lead wire.

As described above, in the present invention, a lamp holding protrusion that is inclined toward the bottom and has elasticity is provided on the inner surface of the cylindrical cap body whose top surface is open, so that the pinch seal part When inserted, the lamp-holding protrusion bends, allowing for easy insertion. Even if there is a difference in the thickness of the pinch seal part, it will be absorbed by the elasticity of the lamp-holding protrusion,
It has the advantage that it can be clamped with the same force, and the height of the filament from the position adjustment plate can be adjusted simply by adjusting the insertion distance of the pinch seal part, making height adjustment extremely easy. In addition, elastic clamping tongues are protruded toward the outer flange that protrudes from the outer surface of the cap body, so when the position adjustment plate's through hole is inserted into the cap body, the clamping tongues will be removed. The edge of the through hole of the bending and position adjusting plate can be elastically temporarily fixed by the clamping tongue piece and the outer flange. Then, the cap body is inserted into the through hole drilled in the position adjustment plate in this way, and the outer flange and the clamping tongue piece grip the edge of the through hole in the position adjustment plate, making it easy to open the position adjustment plate. Once the relative position of the position adjustment plate to the filament has been determined, the elastic force of the clamping tongues will temporarily hold it in place, and it is necessary to hold both together until the next welding operation. It has the advantage that everything from positioning to welding can be done easily and accurately, and since the position adjustment plate is held between the outer flange and the holding tongue, there is a difference in holding force during spot welding. Another advantage is that the position adjustment plate does not tilt even when the position is adjusted.

[Brief explanation of drawings]

Fig. 1: An external perspective view of the present invention; Fig. 2: A partially cutaway perspective view showing the attached state of the pull-out cord of the present invention; Fig. 3a: a front view showing the pinch seal portion of the present invention in a clamped state; Figure 3b...Front view showing the state of engagement between the ear part of the present invention and the lamp holding protrusion, Figure 4...A partial front view of the base body of the present invention, Figure 5...Pinch seal of the present invention a cross-sectional view showing the clamping state of the parts;
FIG. 6: A perspective view of a portion of a conventional cap. 1...Cap body, 2...Lamp holding protrusion, 3
... Outer tsuba, 4 ... Clamping tongue piece, 5 ... Position adjustment plate, 6 ... Through hole.

Claims (1)

[Scope of utility model registration request] A cylindrical base body with an opening at the top has an inner surface that is inclined toward the bottom and has an elastic lamp holding protrusion protruding from the outer surface of the base body, and an outer flange that protrudes horizontally from the outer surface of the base body. An elastic clamping tongue protruding from the outer surface of the cap body is inclined toward the outer flange, and a through hole larger than the outer diameter of the cap body is bored in the position adjustment plate.
Insert the cap body into the through hole, clamp the hole edge of the through hole between the outer flange and the clamping tongue, fix the position adjustment plate to the outer flange, and insert the pinch seal part that protrudes from the bulb body into the opening of the cap body. An assembly structure for a halogen lamp, characterized in that the pinch seal part is inserted into the lamp clamping part and the pinch seal part is clamped by a lamp clamping protrusion.