JPS6026437Y2 - fuse holder - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a fuse holder.

Conventional fuse holders have a structure in which a non-slip surface is formed on the circumferential surface of the cap by means of irregularities or the like, and the cap can be easily rotated and removed by pinching the cap with the fingers.

However, with this type of structure, there is a risk of electric shock if your fingers touch live parts, which has been a problem for some time.

The present invention was made to improve this drawback, and includes a slip ring rotatably fitted on the circumferential surface of the cap.
In addition to preventing the cap from being rotated by fingers, the head of the cap is provided with a socket for a tool so that the cap can be rotated and removed only with a suitable jig.

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a front sectional view thereof, and FIG. 2 is an assembled view.

In the figure, 1 is a holder body, and 2 is a cap. The cap 2 is composed of a metal part 20 having a threaded part 21 that is screwed into the holder body 1, and a plastic part 22 that covers the entire upper part of this metal part 20. ing.

The metal part 20 is inserted and bonded to the plastic part 22 when it is formed.

A large diameter portion 24 is formed in a band shape on the circumferential side 23 of the plastic portion 22.
is formed, and a slip ring 4 is rotatably fitted into this circumferential side 23.

The upper edge of the slip ring 4 has a protrusion 4 that protrudes toward the center.
0 is formed, and this protruding portion 40 is in contact with the upper end of the large diameter portion 24.

Pull-out stops 41 are also formed at a plurality of locations on the lower inner peripheral surface of the slip ring 4, and the pull-out stops 41 abut against the lower end of the large diameter portion 24 to prevent the slip ring 4 from coming off.

A tool socket 3 is provided at the head of the cap 2.

In this embodiment, the groove is for a Phillips or flathead screwdriver, but the groove is not limited to this, and may be used as a socket for any tool.

Further, a special dedicated tool may be used, for example, a think screw may be used.

In the above-described configuration, even if an attempt is made to turn the cap 2 with a finger when attaching or removing the cap 2 to or from the holder main body, the slip ring 4 rotates idly and the cap 2 does not rotate.

Therefore, the cap 2 can be removed using a tool through the tool socket 3.
It will not be possible to install or remove it unless you rotate it.

Other embodiments are shown in FIGS. 3 and 4.

In this embodiment, a plurality of retainers 26 are provided above the circumferential surface 23 of the cap 2, and a locking protrusion 25 for locking the slip ring 4 is provided below.

The slip ring 4 is fitted between the locking projection 25 and the removal stop 26.

Next, FIGS. 5 and 6 show an example in which a plastic part and a metal part are fixed by a slip ring.

In this embodiment, a cross-shaped groove 201 is formed on the head of the metal part 20.
At the same time, a cross-shaped fitting protrusion 221 is formed on the lower surface of the plastic part 22, and this protrusion 221 is fitted into the groove 201.

Furthermore, the height of the slip ring 4 is increased, and its protruding portion 40 is
is locked to the upper end of the plastic part 22, and a pull-out stopper 41 is locked to the lower end of the metal part 20, so that the plastic part 22 and the metal part 20 are combined.

As explained above, the fuse holder of the present invention has the effect of effectively preventing accidents such as electric shock because the cap can only be attached and removed using a tool.

[Brief explanation of the drawing]

Fig. 1 is a front cross-sectional view of one embodiment of the present invention, Fig. 2 is an assembled view thereof, Fig. 3 is a front cross-sectional view showing another embodiment of the present invention, Fig. 4 is an assembled view thereof, and Fig. 5 is a front cross-sectional view of an embodiment of the present invention. The figure is a front sectional view showing still another embodiment, and FIG. 6 is an assembled view thereof. 1...Holder body, 2...Cap,
3... Tool socket, 4... Slip ring, 20... Metal part, 21... Threaded part, 22... Plastic Part, 23...
・Peripheral side, 24...Large diameter part, 25...
Locking protrusion, 26... Prevents removal, 40...
・Protruding part, 41... Do not remove, 201...
... Groove, 221... Fitting protrusion.

Claims (1)

[Scope of utility model registration request] a hole-shaped housing part provided with a threaded part at the opening end, into which the cylindrical fuse is inserted in the axial direction to support one end side of the fuse;
a holder body having one terminal connected to one end of the fuse and the other terminal to be connected to the other end of the fuse; a holder body having a housing portion corresponding to the housing portion of the holder body; A threaded portion provided on the surface is screwed into the threaded portion of the holder body, thereby cooperating with the holder body to elastically hold the fuse and connect the other end of the fuse to the other terminal of the holder body. a metal part to be connected, a cap made of an insulating material that has a tool socket at its tip and is integrally formed on the top of the metal part and has a large diameter part on the circumferential side; A fuse holder equipped with a slip ring that is rotatably fitted in the part.