JPS6035121Y2 - Portable light bulb mounting device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an improvement of a zero bulb attachment device for a portable electric light.

As shown in Fig. 4, this type of conventional device has a rear end cylindrical mouth of a reflecting mirror that is connected to a cylindrical metal fitting, and a white bulb E that is attached to a base flange of a white bulb on its inner edge 2 to a cylindrical metal fitting. The outer circumferential thread of the white ball holder was screwed onto the thread provided on the base.

Therefore, when attaching the white ball holder, the white ball holder tube holder must be screwed on, which has the disadvantage that the screwing operation is troublesome.

In this case, to make this screwing operation easier, add one screw.
Although it is made of strips, the disadvantage of having one strip is that the white ball holder can easily come off.

Furthermore, even if the white ball holder tube is removed when replacing the white ball H, the white ball H remains inside the cylindrical metal fitting H, and the white ball H must be taken out again.

The present invention has been devised in view of these points, and one embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

In FIG. 1, reference numeral 1 is a reflecting mirror and is attached to the main body case 4 by screwing the front ring 3 together with the lens body 2 to the opening edge 5 of the main case 4.

This reflecting mirror 1 has a rear end cylindrical part 6, and a base flange part 9 of a white bulb 8 is locked to the inner edge 7 of the tip thereof.

Reference numeral 10 denotes a zero-ball holder according to the present invention, which is formed by, for example, bending a sheet metal.

The holder 10 includes an elastic inner cylinder 12 with a C-shaped cross section that fits into the base 11 of the white bulb 8, and an elastic inner cylinder 12 that projects outward from the tip 14 of the inner cylinder and presses against the inner peripheral surface of the rear end cylinder part 6. It consists of a C-shaped outer cylinder 13 with a C-shaped cross section, and an operating piece 15° 15 that is provided opposite the tip of the outer cylinder and protrudes rearward from the rear end cylinder part 6 when the holder 10 is installed. It is press-fitted between the cylindrical portion 6 and the base 11 of the white ball 8 inserted into the cylindrical portion.

Further, the holder 10 is inserted into the rear end cylinder portion 6 with the white ball 8 fitted into the inner cylinder 12.

In this case, since the outer cylinder 13 comes into pressure contact with the inner circumferential surface of the rear end cylinder part 6, the pressing force is applied to the inner cylinder 12 as a reaction force, and the diameter of the inner cylinder 12 is reduced to firmly hold the white ball 8.

Therefore, even if the holder 10 is inserted in a state where the holder 10 does not reach the innermost end of the rear end cylinder part 6, the white ball 8 will be held, and unlike the conventional device, one part of the holder will be inserted into the rear end cylinder part. It is possible to prevent the white ball from shaking which occurs when the ball is not inserted all the way to the innermost part of the mouth.

Further, the tip 14 of the outer tube 13 is in pressure contact with the inner circumferential surface of the rear end tube 6, and in the direction in which the holder 10 is pulled out, the tip 14 bites into the inner circumferential surface of the rear end tube 6. 10
is prevented from being pulled out.

Next, when replacing the white bulb 8, by pulling out the operation piece 15°15, the diameter of the outer cylinder 13 is reduced, and the contact between the outer cylinder 13 and the inner circumferential surface of the rear end cylinder part 6 is eliminated, and the holder 10 is pulled out. In this case, a diameter reducing force is applied to the inner tube 12 by the pinching force of the operating pieces 15, 15, and the white ball 8 is held by the inner tube 12 and pulled out.

As described above, according to the configuration of the present invention, the conventional cylindrical metal fitting C and the white ball holder tube can be used as one part of the 0-ball holder 10, and there is no need to provide a thread on the holder 10. Therefore, the structure is inexpensive and the operation for attaching and detaching the holder 10 becomes easy.

In addition, when the holder 10 is attached to the rear end cylinder part 6 of the reflector 1, the diameter of the inner cylinder 12 is reduced by the reaction force of the pressure contact force of the outer cylinder 13 to firmly hold the white ball 8. Even if it is not inserted to the innermost part of the part 6, the white ball 8 can be prevented from shaking, and the tip of the outer cylinder 13 will bite into the rear end cylinder part 6 in the direction in which the holder 10 is pulled out.
This prevents the holder 10 from falling off.

Furthermore, since the diameter of the inner tube 12 is reduced to hold the white bulb 8 by operating the knobs 15 and 15 of the holder 10, the white bulb 8 can be easily taken out, which has great practical effects.

[Brief explanation of drawings]

Figures 1 to 3 show an embodiment of the present invention, with Figure 1 being a cross-sectional view of the main parts of a portable light, Figures 2 and 3 being a cross-sectional view and right side view of a zero-ball holder, FIG. 4 is a sectional view of a main part of a conventional device. 1...Reflector, 6...Rear end tube part, 8...
... White ball, 9 ... Mouthpiece flange, 10 ...
... 0 ball holder 11 ... Base, 12 ...
...Inner cylinder, 13...Outer cylinder, 15,15...
...Operation piece.

Claims (1)

[Scope of utility model registration request] A base flange of a white ball inserted into a rear-end cylindrical portion of the reflector is locked to an inner edge of the cylindrical portion, and a 0-ball holder is detachably attached to the inner periphery of the cylindrical portion, wherein the 0-ball holder is an elastic inner cylinder with a C-shaped cross section that fits into the cap of the white ball; and an elastic inner cylinder with a C-shaped cross section that projects outward from the tip of the inner cylinder and is pressed against the inner peripheral surface of the cylinder part. The device comprises an elastic outer cylinder and an operating piece provided at the tip of the outer cylinder and protruding from the cylinder part, and the holder holding the white ball is removed by reducing the diameter of the inner and outer cylinders by pinching the operating piece. A white bulb mounting device for portable light bulbs.