JPH031885Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a modification of the welding structure of a pull-out cord of a halogen lamp.More specifically, the bulb body A is attached to the base body 1, and one end of the metal piece 10 is attached to the pull-out cord 22. At the same time, the other end is extended, and this extended portion is used as the welding piece part 10a, and the welding piece part 1
This relates to a lead-out cord welding structure for a halogen lamp, characterized in that a lead wire 0a is welded to a part B to be welded such as a base body 1 or an external lead rod 20.

Conventionally, _H3 halogen lamps for automobiles were
As shown in the figure, the pull-out cord 22' was inserted through the metal ring 21' and welded together with the pull-out cord 22' to a welding protrusion 16' formed on the base body 1'.

In this case; because the pull-out cord 22' is inserted through the metal ring 21' and because the metal ring 21' is ring-shaped, the electrodes that sandwich the metal ring 21' and the welding protrusion 16' are held together. The force is not sufficiently transmitted to the joint between the two.

Since the metal ring 21' is ring-shaped, the welded portion becomes a line, and the contact area with the welding protrusion 16' becomes extremely small, resulting in a disadvantage that welding defects may occur. .

The present invention was developed in view of the drawbacks of the conventional examples, and its purpose is to create a halogen lamp that can be completely attached to parts to be welded, such as the base body of the drawer cord or the external lead rod. The drawer cord is to provide welded structure.

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 rectangular tube shape with an opening on the top and a bottom. Lamp holding protrusions 2 are cut and raised inward on both sides of the upper half of the cap body 1. The tip of the lamp clamping protrusion 2 is formed to be inclined downward toward the bottom, and an outer flange 3 is provided below the lamp clamping protrusion 2 to protrude outward. Furthermore, a clamping tongue piece 4 is cut and raised outwardly from 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 in an inclined manner and has elasticity like the lamp holding tongue piece 4. A first through hole 12, a second through hole 13, and a third through hole into which a welding electrode (not shown) is inserted are formed on the side surface of the lower half of the base body 1.
A through hole 14 is bored, and a part of the side surface of the cap body 1 is turned inward so as to be aligned with the third through hole 14.
A welding tongue piece 15 is formed by cutting and raising it in a letter shape,
A part of the side surface of the base body 1 is provided to protrude inwardly so as to coincide with the first through hole 12 to form a welding protrusion 16. Further, 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. 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 inner lead rod 19 and an outer lead rod 2.
0 is welded to the inner lead rod 19, 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 portion 7 has thick ears on both sides, and the lamp clamping protrusion 2 is fitted between these ears. The cap body 1 is bent into a rectangular tube shape.
is inserted into the through hole 6 of the position adjustment plate 5, and the edge of the through hole 6 of the position adjustment plate 5 is held between the outer flange 3 and the clamping tongue piece 4 and temporarily fixed. 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. The filament is adjusted to be located at the center of the position adjustment plate 5, and the outer flange 3 and the position adjustment plate 5 are spot welded. As shown in FIG. 2, one end of two metal pieces 10 is wound around the pull-out cord 22, and the other end of the metal piece 10 extends, and this extended portion becomes a welding piece 10a. One of the external lead rods 20 is spot welded to the L-shaped welding tongue piece 15, and the other external lead rod 20 is spot welded to one of the energizing welding pieces 10a. This pull-out cord 22 is further fixed to the base body, and this is done by spot welding another welding piece 10a for fixing to the welding protrusion 16 formed on the inner surface.
External force applied to the pull-out cord 22 is prevented from being applied to the external lead rod 20. Here, the external lead rod 20 and the welding protrusion 16 become the welded part B.

As described above, the present invention involves attaching a light bulb body to a base body, winding one end of a metal piece around a pull-out cord, extending the other end, and using this extended part as a welding piece. is welded to the parts to be welded such as the mouthpiece body and external lead rod, so the welding piece that joins to the parts to be welded is flat, and the welding area is larger than conventional ones, and the welding part Even if an external force is applied in the direction of twisting or peeling, the welded part will not be damaged, and in addition, the clamping force of the electrode that clamps the welding piece and the mouthpiece body will be applied directly to the joint part, and the pressing force will be reduced. It is sufficient and does not cause poor bonding.

[Brief explanation of the drawing]

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. 3: Front view showing the pinching state of the pinch seal portion of the present invention. Figure 4: A partial front view of the main body of the present invention; Figure 5: A cross-sectional view showing the pinch seal portion of the present invention in a pinched state; Figure 6: A partial perspective view of the conventional mouthpiece. FIG. 7 is a cross-sectional view showing how a conventional pull-out cord is attached. A... Bulb body, B... Part to be welded, 1... Cap body, 2... Lamp clamping piece, 3... Outer flange, 4...
... Clipping tongue piece, 5 ... Position adjustment plate, 6 ... Through hole,
16...Protrusion for welding, 19...External lead rod,
22...Withdrawal code.

Claims (1)

[Scope of utility model registration request] Attach the light bulb body to the base body, wrap one end of the metal piece around the lead cord, extend the other end, use this extended part as a welding piece, and use the welded piece to attach to the base body, external lead rod, etc. A welding structure for a halogen lamp pull-out cord, which is characterized by being welded to a part to be welded.