JPH03184281A - Connector - Google Patents

Abstract

PURPOSE:To prevent semiconductor element from destruction even though a probe incorporating it is fitted or removed with the power supply for a signal processing part held in ON condition, by installing the tips of terminal pins or sockets for connection of the hot side and earth side of the power supply in positions ahead the other terminal pins or sockets. CONSTITUTION:The tips of terminal pins 1-5 or sockets 21-25 at which the hot side and earth side of the power supply are connected, are located ahead the other terminal pins or sockets. When a connector 33 is connected, therefore, the power line is first connected, followed by connection of signal line. To disconnect the connector 33, the signal line is first disconnected, followed by disconnection of the power line. Because this causes temporary connecting of the power line even though the signal line is shut open, electric charges are discharged from the side or earth side of the power supply even in the case of excessive charges are loaded on the semiconductor element, which is thus prevented from electrostatic destruction.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a connector, and particularly to a connector suitable for connecting semiconductor elements such as CCDs.

[Conventional technology]

In a conventional connector equipped with a plug having a plurality of terminal pins and a jack having a plurality of sockets that fit with the terminal pins, the tips of the terminal pins and the tips of the sockets are spatially on the same plane. It was formed as if it were inside. Therefore, when connecting a plug and a jack, it has been common practice to connect a plurality of terminal pins and sockets at the same time.

[Problem to be solved by the invention]

When connecting a semiconductor element such as a CCD using such a conventional connector, the semiconductor element may be destroyed when the connector is attached or detached.

That is, for example, the probe section 31 and processor section 32 of an electronic endoscope apparatus as shown in FIG.
Considering the case of connecting with the conventional connector 33, since the electronic endoscope apparatus is often used while changing the probe part 31 to a different type of probe part while the power of the processor part 32 is in the ON state. When connecting or disconnecting the connector 33, the power line may be connected after the signal line is connected, or the power line may be disconnected before the signal line, and the signal line may be disconnected later. Occurs. In such a case, for example, if a CCD is used as the semiconductor element, the CC
A case may occur where D is destroyed. That is, if the power supply line is cut off and only the signal line is connected while charges are accumulated in the CCD, an excessive current will flow from the processor section 32 to the CCD of the probe section 31, and the CCD may be destroyed by the excessive current. The CCD may be damaged by static electricity due to more and more charge being charged inside the CCD, or the P inside the CCD may
A phenomenon in which the NPN structure operates, that is, a latch-up phenomenon may occur.

In addition, a switch is provided on the jack side to turn on and off the power.
There have also been attempts to make the power line operate ○N after the signal line is connected, and disconnect the signal line after the power line is operated OFF (Japanese Patent Application Laid-Open No. 6
3-276885), in order to install such a switch in an outlet, the structure of the outlet must be complicated, and if the power line is intermittently turned off on the signal line, one side of the outlet If a semiconductor element is connected to the semiconductor element, destruction of the semiconductor element, latch-up phenomenon, etc. may occur.

The present invention was made in order to eliminate the drawbacks of such conventional connectors, and when connecting a semiconductor element such as a CCD, it is possible to use the semiconductor element while the power of the signal processing section is in the ON state. It is an object of the present invention to provide a connector that does not destroy semiconductor elements even when a probe part is attached or detached.

[Means to solve the problem]

The connector of the present invention includes a plug having a plurality of terminal bins and a jack having a plurality of sockets that fit with the terminal bins, wherein the terminal pin connects the hot side and the ground side of a power source. Alternatively, the tip of the socket is located in front of other terminal bins or sockets.

[Effect]

In the connector of the present invention, the tip of the terminal bin or socket that connects the hot side and the ground side of the power source is placed in front of other terminal bins or sockets, so when connecting the connector, the power line are connected first, then the signal lines are connected. Further, when disconnecting the connector, the signal line is first disconnected, and then the power line is disconnected. Therefore, even if the signal line is cut off, the power line is temporarily connected, so
Even if a semiconductor element is charged with an excessive amount of electric charge, the electric charge is discharged from the hot side of the power supply or the ground side, so the semiconductor element will not be damaged by static electricity. No current flows to the semiconductor element, and no latch-up phenomenon occurs.

〔Example〕

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

FIG. 1 is a sectional view showing an embodiment of the plug of the connector of the present invention, and FIG. 2 is a sectional view showing an embodiment of the jack used together with the plug of FIG.

In FIG. 1, terminal bin 1. 2. 3. 4. 5
are fixed to the stator 6, and lead wires 7, 8, 9, 10, 11 are connected to the rear end of each terminal bin.

The tips of terminal bins 1 and 5 are connected to other terminal bins 2. 3
．． It is arranged at a position in front of the tip of 4. The hot side of the power supply is supplied to the lead 7 connected to the terminal bin 1, and the ground side of the power supply is supplied to the lead 11 connected to the terminal bin 5.

In FIG. 2, a plurality of sockets 21, 22, 23, 24, 25 are installed in the stator 26 of the jack 20, and each of the sockets 21, 22, 23, 24, 25 has a terminal pin 1. 2. 3. 4. Fits with 5. The tip positions of each socket 21, 22, 23.24° 25 are in the same plane, and each socket 21.22.23.24.25
Lead wires 27, 28, 29, 30, 31 are connected to the rear end of the.

When connecting the plug 12 having the structure shown in FIGS. 1 and 2 to the jack 20, the terminal bin 1 and the terminal bin 5, which are connected to the hot side and the ground side of the power source, respectively, are connected to the other terminal bin 2. 3. 4 hours faster than socket 21
and socket 25, respectively, and then the terminal pins 2. 3. 4 are connected to sockets 22, 23, and 24. When disconnecting the jack 20 from the plug 12,
Conversely, terminal pin 2. 3. 4 is terminal pin 1. The terminal pin 1.5 leaves the socket 22, 23, 24 before the terminal pin 1.5 leaves the socket 21.25. Thus, the lead wires 7.11 supplied with the hot side and the ground side of the power supply, respectively, are connected to the lead wire 27.31, and the lead wires 8, 9.10 of the signal line are connected to the lead wire 28.2.
It will be electrically connected and disconnected at 9.30, and the lead wire 2
This protects the semiconductor elements connected to the terminals 8, 29, and 30 from phenomena such as electrostatic damage or destruction due to excessive current.

〔Effect of the invention〕

In the connector of the present invention, the tip of the terminal pin or socket that connects the hot side and the ground side of the power source is arranged in a position before other terminal pins or sockets, so that
When plugs and jacks are connected and disconnected, the signal line is always connected while the power line is connected, and when a semiconductor element is connected to the signal line, the semiconductor element is protected from destruction due to excessive current or electrostatic damage. Moreover, a phenomenon such as latch-up of the semiconductor element does not occur.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of the connector plug of the present invention, FIG. 2 is a cross-sectional view showing an embodiment of the connector jack of the present invention, and FIG. 3 is an overview of the electronic endoscope device. FIG. 1, 2. 3. 4. 5...Terminal pin, 6.26
...Stator, 12...Plug, 20...Jack, 21,
22. 23. 24. 25... socket, 31
...probe section, 32...processor section, 33.
··connector.

Claims (1)

[Claims] 1. In a connector equipped with a plug having multiple terminal pins and a jack having multiple sockets that fit with the terminal pins, the tips of the terminal pins or sockets that connect the hot side and the ground side of the power source are A connector characterized in that it is arranged in a position before other terminal pins or sockets.