JPH0619128Y2 - High voltage connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a high-voltage connector used as a measuring instrument for insulation characteristic test of electrical equipment for high voltage such as cable, transformer, and rotator. .

[Prior Art] For example, high-voltage electrical equipment is required to have high-level insulation resistance, insulation withstand voltage, and other insulation characteristics. It is known that at the initial stage of deterioration of these insulation characteristics, a corona discharge of an extremely minute charge called partial discharge is generated at an electrical weak point during application of a specified high voltage. Property monitoring methods have become widely used in recent years. The lead wire for partial discharge measurement is required to withstand a high voltage applied to the electrical device under test and faithfully transmit a pulsed signal due to a minute corona discharge.

However, the end of the lead wire to which a high voltage is applied requires a considerably long creepage distance to satisfy sufficient withstand voltage characteristics even if it is a lead wire for measurement, and when using a bushing. Has a disadvantage that it has a large volume and requires a long time for attachment and detachment.

Therefore, as the lead wire terminal portion for measurement, it is advantageous to use a connector type that can be quickly attached and detached and is convenient to handle, but in that case, a small structure having a small area on the panel surface is desirable.

However, in this case, the lead wire is connected to the connection terminal by soldering from the viewpoint of connection resistance and reliability, but since the connection terminal is generally sufficiently covered with an insulating material, the soldering Will be difficult.

[Object of the Invention] In view of the above-mentioned problems, an object of the present invention is to provide a small high-voltage connector that facilitates solder connection of a lead wire to a connection terminal.

[Summary of the Invention] The gist of the present invention for achieving the above-mentioned object is to provide a cylindrical receiving and connecting terminal having a solder connecting end at a rear end and a solder connecting end fitted to the receiving and connecting terminal. A plug-like receptacle for accommodating the pin-shaped plug-in connection terminal and a receptacle surrounded by a metal member, and the plug has a plurality of electrical terminals for holding the plug-in connection terminal. A plug insulating member including a cylindrical portion made of an insulating member,
As the metal member, a cylindrical plug guide sleeve made of a plurality of metal members spaced apart from each other around the cylindrical portion of the plug insulating member is provided, and the receptacle is provided with the plug-in connection terminal. A receptacle insulating member comprising a plurality of electrically insulating members for holding a cylindrical portion of the plug insulating member, the cylindrical portion of which is arranged at intervals around which the cylindrical portion of the plug insulating member is inserted, As a metal member, a cylindrical receptacle guide sleeve made of a metal member is provided around the receptacle insulating member with a space for inserting the plug guide sleeve, and solder of the connection terminal of each insulating member is provided. It is a high-voltage connector characterized in that a portion covering a connection end is configured to be removable.

[Embodiment of the Invention] The present invention will be described in detail based on the illustrated embodiment.

In the drawings, 1 is a plug for attaching a lead wire, 2 is a receptacle to be attached to the panel side, each having, for example, four cylindrical socket contacts 3 and pin-shaped pin contacts 4. . On the plug 1 side, an insulating member 5 made of synthetic resin having electric insulation for sandwiching and fixing the socket contact 3 and made of three separate members is provided. That is, this insulating member 5 is a cylindrical first insulating member 5a into which the socket contact 3 is inserted, and a plate-shaped second insulating member which is connected to the rear portion of the first insulating member 5a and fixes the pin contact 4. 5b, and further connected to the rear portion of the second insulating member 5b to cover the lead wire connecting portion 3a of the socket contact 3 3
It is composed of a cylindrical third insulating member 5c which is a separate member.

Then, a first guide sleeve 6 made of metal is circumferentially provided around the first insulating member 5a and the second insulating member 5b in a spaced manner.
Further, a metal second guide sleeve 7 is attached to the rear end of the first guide sleeve 6 by screwing.
A metal coupling nut 8 is rotatably attached to the outside of the front end portion of the second guide sleeve 7, and a clamp 9 for fixing a lead wire is provided at the rear end portion.

On the other hand, on the side of the receptacle 2 is made of a synthetic resin material like the plug 1 for holding and fixing the pin contact 4,
An insulating member 10 composed of three separate members is provided, that is, the connecting member 10 has a fourth cylindrical portion in which the pin contact 4 is inserted and which is fitted around the first insulating member 5a of the plug 1. The insulating member 10a and the fourth insulating member 10
a plate-shaped fifth insulating member 10b attached to the rear portion of a for fixing the pin contact 4, and further the fifth insulating member 1
0b around the lead contact 4a of the pin contact 4
And a cylindrical sixth insulating member 10c that covers the. Around the insulating member 10, a flange 11a for fixing the receptacle 2 to the panel is provided, and a third metal guide sleeve 11 located outside the first guide sleeve 6 of the plug 1 is surrounded. It is set up.

In this case, for example, the same number of lead wires are connected to the plurality of socket contacts 3 in the plug 1 by soldering, but the third insulating member 5c
It is extremely difficult to work with the attached. Therefore, before attaching the second guide sleeve 7, the third insulating member 5
After inserting c into the lead wire, the lead wire is soldered to the lead wire connecting portions 3a of the plurality of socket contacts 3 fixed to the first and second insulating members 5a and 5b. After that, the third insulating member 5c is replaced with the second insulating member 5b.
And the second guide sleeve 7 may be attached.

By doing so, the lead wire can be easily connected to the plurality of socket contacts 3 in the narrow space surrounded by the third insulating member 5c. This also applies to the receptacle 2, and the sixth insulating member 10c is removed from the fifth insulating member 10b before the pin contact 4
The lead wire may be connected to the lead wire connecting member 4a.

The plug 1 and the receptacle 2 configured as described above are fitted together, and the coupling nut 8 tightens the second guide sleeve 7 and the third guide sleeve 11 to complete the connection. At this time, the pin contact 4 is fitted into the socket contact 3, and the first insulating member 5a, the fourth insulating member 10a, the first guide sleeve 6, and the third guide sleeve are outwardly provided around the fitting portions. 11 are sequentially arranged, and the first insulating member 5a and the fourth insulating member 1
With 0a, a sufficient creepage distance can be obtained, and mechanically sufficient strength can be obtained.

[Advantages of the Invention] As described above, in the high-voltage connector according to the present invention, a part of the insulating member surrounding the lead wire connection portion of the connection terminal can be removed, so that the lead wire connection terminal can be soldered. It will be easy. Further, since the plug and the insulating member guide sleeves of the receptacle are superposed on each other at the time of coupling, a sufficient creepage distance can be obtained, the size can be reduced, and a sufficient mechanical strength can be obtained. Furthermore, since the insulating member and the guide sleeve are divided, the defective parts can be individually replaced, and the cost for repair can be reduced.

[Brief description of drawings]

The drawings show an embodiment of a high voltage connector according to the present invention,
FIG. 1 is a vertical cross-sectional view with a part thereof as a cross-section, and FIG. 2 is a rear view of the receptacle. Reference numeral 1 is a plug, 2 is a receptacle, 3 is a socket contact, 4 is a pin contact, 5 and 10 are insulating members,
Reference numerals 6, 7, and 11 are guide sleeves, and 8 is a coupling nut.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Shigeru Tanaka 1008 Shinbori, Kumagaya-shi, Saitama Mitsubishi Cable Industries, Ltd. Kumagaya Manufacturing Co., Ltd. (72) Tsuneo Mori 16-9 Wakamatsucho, Shinjuku-ku, Tokyo Shinri Kogyo Co., Ltd. In-company (72) Inventor Teruzou Araki 16-9 Wakamatsu-cho, Shinjuku-ku, Tokyo Shinri Kogyo Co., Ltd. In-company (56) References: 58-36577 (JP, U) 61-99376 (JP) , U) Actually open 61-99977 (JP, U) Actually open 45-5575 (JP, Y1)

Claims (1)

[Scope of utility model registration request] 1. A cylindrical receiving / connecting terminal having a solder connecting end at a rear end thereof and a pin-like inserting / connecting terminal fitted to the receiving / connecting terminal and having a solder connecting end at a rear end thereof. A plug insulating member having a columnar portion composed of a plurality of electrically insulating members for holding the receiving and connecting terminals, the plug insulating member having a plug and a receptacle surrounded by a metal member. A cylindrical plug guide sleeve composed of a plurality of metal members spaced apart from each other around the cylindrical portion of the plug insulating member is provided as the metal member, and the plug-in connection is provided in the receptacle. A receptacle insulating member including a plurality of electric insulating members for holding terminals, and including cylindrical portions arranged around the plug-in connecting terminal at intervals so that a cylindrical portion of the plug insulating member can be inserted; A cylindrical receptacle guide sleeve made of a metal member is provided as the metal member around the receptacle insulating member with a space for inserting the plug guide sleeve, and the connecting terminals of the insulating members are provided. A high-voltage connector characterized in that a portion covering a solder connection end is configured to be removable.