JPH0347273Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an improvement in the attachment structure of an adapter for a small halogen light bulb.

(Prior art) The conventional mounting structure for an adapter for a halogen light bulb is to insert the pinch seal part of the halogen light bulb into a mounting hole drilled in the adapter, and use a pair of clamping pieces that hang vertically from the mounting hole. The pinch seal part was clamped and mounted, and the adapter was caulked and fixed to the upper opening of the housing body. Next, one external lead rod led out from the pinch seal part is connected to the terminal installed at the bottom center of the housing body, and the other external lead rod is connected to the outside through the opening on the top surface of the housing body or the notch groove provided in the adapter. It was then welded or soldered to the outer surface of the housing body or adapter.

(Problem to be solved by the invention) However, in this case, the adapter was larger than the external dimensions of the pinch seal part of the halogen light bulb, so it was not possible to drill the mounting hole with enough room. However, depending on the type, the pinch seal part of the halogen bulb and the inner diameter of the housing body may be almost the same, and in this case, it is not possible to provide a mounting hole in the adapter using the above method. However, it is necessary to use adhesive to embed the pinch seal part of the halogen bulb into the housing body, which has the disadvantage that the adhesive is exposed to the outside and that one of the external lead rods is attached to the rim of the housing body. Since it is welded to the surface, it has the disadvantage of poor appearance. In addition, there is a difference in the dimensions of the adapter and the halogen bulb, so if a mounting hole is drilled in the adapter and the pinch seal part is held between a pair of left and right connecting pieces hanging from the mounting hole, the dimensional accuracy may be affected. Because the structure was such that a low glass pinch seal part was held between independent connecting pieces, errors accumulated, the strength of the holding pieces was uneven, and the halogen bulbs sometimes tilted. The present invention was devised to address the drawbacks of the conventional examples, and its purpose is to accurately and firmly provide a compact halogen bulb in which the pinch seal part and the inner diameter of the housing body are almost the same. To provide a mounting structure for an adapter that can be mounted.

(Means for Solving the Problem) In order to achieve the above-mentioned object, the present invention arranges a pair of top plate halves 2 on the left and right through a clamping groove, and The locking piece 3 and the inner locking piece 4 are suspended, and a connecting piece 5 having a substantially U-shaped cross section is formed between the clamping grooves to form the top plate half 2.
The top plate half 2, the connecting piece 5, the outer locking piece 3, and the inner locking piece 4 constitute an adapter A.

Adapter A in which the pinch seal part 6 of the halogen bulb B is placed in the clamping groove, the pinch seal part 6 is sandwiched between the connecting pieces 5, and the halogen bulb B is attached.
Attach it to the top opening of the housing body.

The outer locking piece 3 is locked to the outer surface of the housing body, and the inner locking piece 4 is brought into contact with the inner side of the housing body, and the outer locking piece 3 and the inner locking piece 4 lock the top opening of the housing body. It employs a technical configuration called sandwiching.

(Function) A pinch seal portion 6 having an outer dimension approximately equal to the inner diameter of the housing body 17 is inserted into the clamping groove 1 formed across the top plate portion 12 of the adapter A, and a pinch seal portion 6 having an approximately U-shaped cross section is inserted. The pinch seal portion 6 is held between the connecting pieces 5. Next, attach the adapter A with the halogen bulb B attached to the upper opening of the housing body 17, and attach the outer locking piece 3 to the housing body 1.
At the same time, the inner locking piece 4 is brought into contact with the inner side of the housing body 17, and the upper opening of the housing body 17 is held between the outer locking piece 3 and the inner locking piece 4. .

(Example) An example of the present invention will be described below. A pair of top plate halves 2 are arranged on the left and right through the clamping groove,
These top plate halves 2 form a top plate portion 12.
Therefore, the holding groove is formed across the top plate portion 12. An outer locking piece 3 hangs down from the center of the outer peripheral edge of the top plate half 2, and inner locking pieces 4 hang down from both sides thereof. A pair of left and right outer locking pieces 3
The inner diameter between them is approximately equal to the outer diameter of the housing body 17, and the outer diameter of the inner locking pieces 4 on both sides thereof is approximately equal to the inner diameter of the housing body 17. A connecting piece 5 having a substantially U-shaped cross section is formed between the holding grooves 1, and the connecting piece 5 connects the top plate half 2 to one end or both ends of the holding groove 1. In the illustrated embodiment, one end is connected. Furthermore, the clamping groove 1
Clamping pieces are hung downward from the edges, and a welding piece 11 is suspended further down from one of the clamping pieces 10. The adapter A is composed of the pair of top plate halves 2, a connecting piece 5, an outer locking piece 3, an inner locking piece 4, a clamping piece 10, and a welding piece 11. The connecting piece 5 may be simply U-shaped, but
The stepped portion 7 may be configured to bulge outward as shown in the figure. In that case, the lower edge of the clamping piece 10 may coincide with the stepped portion 7. Housing body 17
The housing body 17 has a cylindrical shape with an open top, and a terminal 9 is provided at the center of the bottom, and a locking protrusion protrudes from the side surface of the housing body 17 for locking to an outlet. A pinch seal portion 6 is provided at the lower end of the halogen bulb B shown in this embodiment, and two internal lead rods 14 are erected from this pinch seal portion 6 into the bulb portion 13. 14, a filament 18 is installed between them, and an external lead rod 16 is led out from the pinch seal portion 6 via a molybdenum metal foil 15. The pinch seal portion 6 is formed with a bulging engaging portion 8 that matches the step portion 7 of the connecting piece 5 .

Then, slightly open the clamping groove 1 of the adapter A,
The pinch seal part 6 of the halogen bulb B is inserted, one external lead rod 16 of the halogen bulb B is bent and spot welded to the welding piece 11, and the excess is cut off. As a result, the connecting portion of the external lead rod 16 is not exposed to the outside, and the appearance is improved. Next, another external lead rod 16 is bent and placed so as to coincide with the center. After that, the clamping groove 1 is closed and the clamping piece 10 is closed.
In addition, the pinch seal portion 6 is held tightly between the connecting pieces 5. At this time, if a stepped portion 7 is formed on the connecting piece 5, the bulging engagement portion 8 of the pinch seal portion 6 will be pinched and engaged with the lower edge of this stepped portion 7 and the clamping piece 10. There is. Next, the external lead rod 16 at the center position is inserted into the terminal 9 of the housing body, the adapter A is attached to the upper opening of the housing body, the outer locking piece 3 is locked to the outer surface of the housing body, and the inner The locking piece 4 is brought into contact with the inner surface of the housing body, the outer locking piece 3 and the inner locking piece 4 sandwich the upper opening of the housing body, and finally the external lead rod 16 inserted into the terminal 9 is connected to the terminal. Solder or weld to 9 and cut off the excess to make the finished product. The halogen light bulb B with a base thus formed is used, for example, in a flashlight or a bicycle headlight.

(Effects) As described above, the present invention arranges a pair of top plate halves on the left and right through the clamping groove, and the outer locking piece and the inner locking piece are suspended from the outer peripheral edge of the top plate half. At the same time, a connecting piece with an approximately U-shaped cross section is formed between the clamping grooves to connect the top plate halves, so the clamping grooves are formed across the top plate and can be inserted into the housing body. If it is large enough, it has the advantage of being able to be attached to an adapter, and a connection piece with a roughly U-shaped cross section is formed between the clamping grooves to connect the top plate halves and connect the pinch seal part of the halogen light bulb. Since it is held between two pieces, the pinch seal part is held between the integrated connecting pieces, and the left and right balance is good.
As a result, it can be installed vertically to the adapter. Furthermore, the adapter is attached to the upper opening of the housing body, the outer locking piece is locked to the outer surface of the housing body, and the inner locking piece is brought into contact with the inner surface of the housing body, so that the outer locking piece and the inner locking piece are brought into contact with the inner surface of the housing body. Since the top opening of the housing body is held between the retaining pieces, even if the top plate half is supported at one end, once it is attached to the housing body, it is integrated into the housing body, making it stronger than conventional adapters. At first, there was nothing like it.

[Brief explanation of the drawing]

Fig. 1: A front view of an embodiment of the present invention, Fig. 2: A plan view of the top plate portion of the present invention, Fig. 3: XX sectional view of the adapter portion of the present invention, Fig. 4 . . . YY sectional view of the adapter portion of the present invention. A...Adapter, B...Halogen bulb, 1...
Clamping groove, 2... Top plate half, 3... Outer locking piece, 4
...Inner locking piece, 5...Connection piece, 6...Pinch seal portion, 7...Step portion, 8...Bulging engagement portion, 9...
Terminal, 10... Holding piece, 11... Welding piece, 12...
... Top plate section, 13 ... Tube section, 14 ... Internal lead rod, 15 ... Molybdenum metal foil, 16 ... External lead rod, 17 ... Housing body, 18 ... Filament.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A pair of top plate halves are arranged on the left and right through a clamping groove, and an outer locking piece and an inner locking piece are suspended from the outer peripheral edge of the top plate half, and Cross section approximately U between the clamping grooves
A letter-shaped connecting piece is formed to connect the top plate halves, and the top plate half, the connecting piece, the outer locking piece, and the inner locking piece constitute an adapter, and the pinch seal portion of the halogen light bulb is inserted into the clamping groove. Place the adapter inside the housing and pinch the pinch seal part with the connecting pieces, attach the adapter to the upper opening of the housing body, lock the outer locking piece to the outer surface of the housing body, and connect the inner locking piece to the housing body. A mounting structure for an adapter, characterized in that the upper opening of the housing body is held between an outer locking piece and an inner locking piece. (2) A request for registration of a utility model characterized in that the connecting piece has a stepped portion that bulges outward, and the bulging engagement portion formed on the pinch seal portion engages with the stepped portion of the connecting piece. Mounting structure of the adapter described in scope 1.