JPS5823122Y2 - mobile light - Google Patents

Description

[Detailed description of the invention] This invention relates to a portable light in which a conductive bottom cover is screwed to the battery exchange port at the bottom of the conductive cylindrical main body case that houses multiple batteries, and the main body has a particularly simple structure. The purpose of the present invention is to provide a portable electric lamp that ensures continuity between a case and a bottom cover.

Conventionally, in this type of portable electric lamp, the surface of the main body case, which serves as the gripping portion, is coated with vinyl chloride for decoration and rust prevention purposes, and the bottom cover is screwed onto this surface.

As a result, electrical continuity between the main body case and the bottom cover is lost, and generally, as shown in FIG.
It has a structure in which it is fixed and electrically connected to the inner surface of the main body case 50.

However, with this structure, if the eyelet 52 fixed to the root of the screw gets in the way and the bottom cover 53 cannot be screwed in smoothly, or if the eyelet is not fixed correctly, continuity will be lost. The manufacturing process was troublesome because it tended to be complete and required a caulking process.

This idea eliminates the above-mentioned drawbacks; a protrusion is provided on the end face of the battery exchange port at the bottom of the main body case, and a protrusion is provided on the inner surface of the bottom cover facing the protrusion, which is perpendicular to the screwing direction of the bottom cover. By arranging it, when the bottom cover is screwed into the battery exchange port,
This ensures electrical continuity between the main body case and the bottom cover.

An embodiment of this invention will be described below with reference to the drawings.

In Fig. 1, reference numeral 1 denotes a main body case formed into a cylindrical shape by overlapping both ends of a metal flat plate.A lighting section (not shown) is attached to the -blade side, and a bottom cover 2 is attached to the other side, that is, the bottom of the main body case. A threaded portion 1a for screwing together and a battery exchange port 1b for taking out the battery are provided.

A protrusion 1 is provided in the axial direction on the end surface of the overlapping portion of the battery exchange port 1b.
C is integrally formed.

The bottom cover 2 is a conductive cylindrical cover whose surface is plated with nickel chrome for rust prevention, and the inner surface facing the protrusion 1C provided at the end of the battery exchange port has a plate as shown in FIG. A large number of protrusions 2a are arranged in a direction perpendicular to the screwing direction of the bottom cover 2 (indicated by arrow P).

In the portable light having the above configuration, when the bottom cover 2 is screwed into the battery exchange port 1b at the bottom of the main body case, the tip of the protrusion IC provided on the end face of the battery exchange port 1b will be connected to the protrusion 2a on the inner surface of the bottom cover. The main body case 1 and the bottom cover 2 are electrically connected by contacting with each other.

In this case, as shown in FIG. 3a, the protruding body 1C is integrally provided on an elastic arm-shaped body S formed by continuously notching the end face of the battery exchange port 1b in the axial and radial directions. Providing elastic force in the axial direction (indicated by arrow Q) can provide a moderation effect when screwing together the bottom cover 2, and the elastic repulsive force of the elastic arm-like body S causes the tip of the protruding body 1C to reach the bottom. It makes stronger contact with the protrusion 2a on the inner surface of the lid.

In addition, if the elastic arm S is formed on the same straight line as the protruding body 1C by cutting out both sides of the protruding body 1C as shown in Figure 3, the elastic arm S will be the same when attached and when it is taken off. Gain moderation.

Furthermore, as shown in FIG. 4, the elastic arm-shaped body S may be pressed in advance into a 5-shaped metal plate that will become the main body case 1, and a pair of elastic protrusions K may be integrally provided therein.

FIG. 5 is an enlarged view of the essential parts of the bottom cover 2g, in which elongated holes 2b are bored along both sides of the protrusion 2a to impart elasticity to the protrusion 2a.

In this case, there is a moderating effect and the protrusion 2a does not deform inadvertently on the inner surface of the bottom cover 2.

FIG. 6 shows a modification of the bottom cover 2 shown in FIG.
d.

According to this invention having the above configuration, the protrusion 1C is provided on the end face of the battery exchange port 1b at the bottom of the main body case, and the protrusion 2a is provided on the inner surface of the bottom cover 2 facing the protrusion 1C. When the lid 2 is screwed onto the main body case 1, the conduction between the main body case 1 and the bottom lid 2 is ensured, and even if the protrusion 2a that is in constant contact with the bottom lid 2 is worn out by unscrewing the bottom lid 2, it can be screwed in even more firmly. A new protrusion 2a can be obtained.

Furthermore, since the protrusion 1C and the protrusion 2a are integrally formed on the main body case 1 and the bottom cover 2, the conventional grommet caulking process is not necessary.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional perspective view of the main parts of a portable electric lamp implementing this invention, Figure 2 is an enlarged view of the main parts of the bottom cover of the same embodiment, and Figures 3 a and l.
) and Fig. 4 are explanatory diagrams when the protrusion is made elastic, Figs. 5 and 6 are enlarged views of the main parts when the protrusion of the bottom cover is made elastic, and Fig. 7 is the conventional one. This is an example. 1...Body case, 1b...Battery exchange port, 1C...Protrusion, 2...Bottom cover, 2
a... Projection, 2b... Long hole, S...
...Elastic arm.

Claims (3)

[Scope of utility model registration request] (1) Screw the conductive bottom cover 2 into the battery exchange port 1b at the bottom of the conductive cylindrical main body case 1, and connect one electrode of the battery stored in the main body case 1 to the main body case through the bottom cover 2. In a portable electric lamp which is electrically connected to the side, a protrusion 1C is provided on the end face of the battery exchange port 1b, and a protrusion 1C is provided on the inner surface of the bottom cover 2 facing the protrusion 1C in a direction perpendicular to the screwing direction of the bottom cover 2. Projection 2
A portable light with many a. (2) Utility model registration claim 1 in which the protruding body 1C is constituted by an elastic arm-shaped body S integrally provided in the main body case 1
Portable lights listed in section. (3) The portable electric lamp according to claim 1, which is a utility model, in which elongated holes 2b are formed along both sides of the protrusion 2a, and the protrusion 2a has elasticity.