JPH0124872Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a pin plug used for connecting and disconnecting electrical circuits.

[Conventional technology]

If an oxide film or the like is formed on the metal pin-type terminal of a pin plug, the voltage-current characteristics will deteriorate. For this reason, it is desirable to periodically clean the metal pin-shaped terminal of the pin plug, and cleaning is generally performed with a cotton swab or gauze impregnated with a cleaning liquid.

[The problem that the idea attempts to solve]

However, cleaning using a cleaning member such as a cotton swab or gauze is complicated, and the cleaning member must always be prepared. In addition, there is a risk of losing the cleaning member, which is disadvantageous and inconvenient because when you need it, you may not have it on hand and have to look for it.

The purpose of this invention is to eliminate such disadvantages and to facilitate cleaning of the metal pin-shaped terminal of the pin plug.

[Means to solve the problem]

The pin plug of this invention has an insulating cover 2 on its surface, as shown in FIGS. 1 and 3, for example.
It is assumed that the pin plug body P has a metal pin type terminal 4 disposed inside the metal cylindrical terminal 3 coated with 6 at all times. As a permanent means for the cleaning body 6, a flexible string 5 is integrally extended from the insulating cover 2, the cleaning body 6 is attached to the free end side of the string 5, and the cleaning body 6 is attached to a pin plug. Metal pin type terminal 4 of main body P,
Alternatively, it can be attached to and detached from the insulating cover 2 or the like.

[Effect]

In such a case, since the cleaning body 6 is always kept in the pin plug main body P and is always easily visible, its cleaning is encouraged.

When cleaning, the metal pin terminal 4 can be cleaned by detaching the cleaning body 6 from the pin plug body P while being connected to the string 5. At this time, the cleaning body 6 remains connected with the string 5,
Since the string 5 is flexible, it can be moved freely relative to the metal pin-shaped terminal 4 of the cleaning body 6, making cleaning easy.

After cleaning, the cleaning body 6 is attached to the pin plug main body P while being connected with the string 5, so that the cleaning body 6 is never lost or lost.

[Effect of idea]

According to the pin plug of this invention, the cleaning body 6 for cleaning the metal pin type terminal 4 is attached to the free end side of the flexible string 5 integrally extending from the insulating cover 2, and Since it is detachable from the pin plug main body P, the cleaning body 6 catches the eye whenever the pin plug is used, thus calling attention to the cleaning of the metal pin type terminal 4. Not only does this eliminate the problem of losing the cleaning body 6, but it is also easy to use and convenient for cleaning.

〔Example〕

An embodiment of the pin plug according to this invention will be explained based on FIGS. 1 and 2. The pin plug main body P includes a plastic insulating cover 2 attached to the end of a cord 1, and a metal cylindrical terminal 3 whose surface is integrally covered with the insulating cover 2.
and a metal pin-shaped terminal 4 which is arranged at the center inside the metal cylindrical terminal 3 and projects forward of the metal cylindrical terminal 3, and both terminals 3 and 4 are connected to the end of the cord 1. A cleaning body 6 is permanently attached to this pin plug body P with a flexible string 5. The cleaning body 6 is formed into a cylindrical shape from a cleaning liquid-absorbing material such as felt, non-woven fabric, porous rubber material, or porous synthetic resin (for example, elastic sintered polyethylene), and has a cylindrical shape at the center of its tip surface. It has a hole 7 with an inner diameter smaller than the outer diameter of the metal pin-shaped terminal 4, and its outer diameter is slightly larger than the inner diameter of the metal cylindrical terminal 3. Further, a cap 8 is externally attached to the rear end of the cleaning body 6. On the other hand, string 5
One end of the string 5 is integrally fixed to a part of the surface of the insulating cover 2, and the other free end of the string 5 is attached to the cleaning body 6.
It is connected to the cap 8 of.

In such a case, insert the cleaning body 6 into the metal cylindrical terminal 3, insert the metal pin type terminal 4 into the hole 7 of the cleaning body 6, and rotate the cleaning body 6 or take it in and out by picking the cap 8 with your fingers. As a result, the oxide film and dirt formed on the circumferential surface of the metal pin-shaped terminal 4 and the inner circumferential surface of the metal cylindrical terminal 3 could be removed.

In addition to using a dry method to remove oxide films and dirt by simply rubbing the cleaning body 6 on the circumferential surface of the metal pin-type terminal 4 and the inner circumferential surface of the metal cylindrical terminal 3, the cleaning body 6 also has a cleaning agent. It is also possible to use a wet method in which the cleaning is performed by impregnating a liquid (for example, isopropyl alcohol, tetralead carbon liquid, etc.).

It is advantageous for rust prevention if the cleaning body 6 is inserted into the metal pin type terminal 4 of the pin plug body P when not in use.

Note that cleaning the inner circumferential surface of the metal cylindrical terminal 3 is not necessarily required, and it is sufficient if at least the metal pin type terminal 4 can be cleaned.

[Another example]

FIG. 3 shows another modified embodiment of the above-mentioned cleaning body, in which a flat cleaning body 6 made of the same material as the above-mentioned cleaning body 6 is constructed, and this is attached to the insulating cover 2 of the pin plug body P. It is attached to the free end side of a flexible string 5 extending from a part of the surface, and is releasably joined to the recess 9 on the surface of the insulating cover 2.

In such a case, peel off the cleaning body 6 from the recess 9 of the insulating cover 2 of the pin plug body P, and remove the cleaning body 6.
By wrapping it around the metal pin type terminal 4 and rubbing and rotating it, the oxide film and dirt formed on the circumferential surface of the metal pin type terminal 4 could be removed. After cleaning, if the cleaning body 6 is joined to the recess 9,
It does not get in the way when inserting and removing from the pin jack.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the pin plug according to this invention, and FIG. 2 is a sectional view of the pin plug in a cleaning state. FIG. 3 is a perspective view showing another embodiment of the pin plug according to this invention, and FIG. 4 is a diagram showing the cleaning body in use. P...Pin plug body, 2...Insulating cover,
3...Metal cylindrical terminal, 4...Metal pin type terminal, 6
...Cleaning body.

Claims (1)

[Claim for Utility Model Registration] Cleaning the pin plug main body P, which has a metal pin type terminal 4 inside the metal cylindrical terminal 3 whose surface is covered with an insulating cover 2, and the metal pin type terminal 4. The cleaning body 6 is attached to the free end side of a flexible string 5 integrally extending from the insulating cover 2, and is detachable from the pin plug body P. A pin plug characterized by: