JPH0482178A - Connector - Google Patents

Abstract

PURPOSE:To reduce the generation frequency of sparks and have a safe connector with inexpensive constitution and long service life by arranging signal connection terminals to both end parts of connector, interposing power connection terminals between the signal connection terminals, and insulating the parts between the terminals and the outer parts. CONSTITUTION:In a connector where there are signal terminals and power connection terminals in plural numbers respectively, and the signal connection terminals 51 are arranged at both ends while power connection terminals 52 are interposed therebetween. With the constitution, when a case 8 where the parts between the respective, terminals and the outer parts thereof to be touched by hand are insulated is inserted in a case 9 incompletely or slantly, connection of the terminals 51 is released prior to that of the terminals 52, so that current supply to a heat generation wires 4 is interrupted. It is thus possible to prevent generation of sparks, heat generation and burning damage at the power connection terminals 52 are prevented to thereby provide a safe and inexpensive connector.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Use This invention relates to connectors for electric carpets, electric kotatsus, and other electric heating appliances through which a large current flows.

BACKGROUND OF THE INVENTION The prior art related to carpet connectors will be explained with reference to FIG.

■ is a commercial power source. Reference numeral 2 denotes a carpet body, on which a temperature detection line 3 and a heat generation line 4 are arranged.

10 is a connector, and 51 is a signal connection terminal for transmitting a temperature signal from the temperature detection line 3 to a control circuit 6 that controls the temperature and detects disconnection.The relay 7 is controlled by the control signal from the control circuit 6. , when the relay contact 71 opens and closes, the current to the heating wire 4 flows to the connector 10.
The power is supplied or stopped through the power connection terminal 52 of the power supply. At this time, the signal connection terminals 51 were connected so as not to come to both ends of the connector 10.

Problems to be Solved by the Invention With such a conventionally configured connector, the power output from 3 amperes to 20 amperes
Power connection terminal 5 of connector 10 through which amperage of current flows
If the connector 10 is stepped on or subjected to vibration when the connector 10 is not fully inserted or inserted at an angle, the contact resistance at the connection part increases due to repeated contact and non-contact and the generation of sparks. This could lead to heat generation and burnout. If the current is less than 3 amperes, there is almost no chance of burnout, and if the current exceeds 20 amperes, it is dangerous to connect with a connector and it is rarely used.

The present invention solves the above-mentioned problems and provides a safe connector with an inexpensive construction and a longer lifespan.

Means for Solving the Problems In order to achieve the above object, the present invention arranges signal connection terminals at both ends of a connector, and arranges power connection terminals inside thereof! It is something to do.

According to the above-described structure, the signal connection terminal is located outside the power connection terminal, so the connection of the signal connection terminal is lost before the power connection terminal, which reduces the frequency of sparks and extends the service life. Furthermore, it is also possible to prevent heat generation and burnout from the connector by detecting that there is no temperature signal and stopping the current supply.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIGS. 1 and 2.

FIG. 1 shows one embodiment of the present invention, and FIG. 2 is an actual view of the connector 5 shown in FIG. 1.

Components with the same numbers in FIG. 1 and FIG. 3 are the same and have the same functions, so a description thereof will be omitted.

The connector 5 has signal connection terminals 51 arranged at both ends, and a power connection terminal 52 arranged inside thereof. With this configuration, when the case 8, which insulates the terminals of the connector 5 and the outer part that is touched by hands, is inserted into the case 9 halfway or diagonally, the signal is connected before the power connection terminal 52. When the terminal 51 is disconnected, the temperature control and disconnection detection control circuit 6 detects the disconnection, stops the relay 7, and opens the relay contact 71, cutting off the current supply to the heating wire 4.

In this embodiment, a relay is used, but instead of the relay, a semiconductor element such as a triac may be used to perform power control based on the output from the control circuit 6.

Effects of the Invention When there are multiple signal connection terminals and multiple power connection terminals of 3 amperes or more and 20 amperes or less, by arranging the signal connection terminals at both ends, the signal connection terminal becomes open before the power connection terminal, and the power Since the current supply to the connection terminal is cut off and the generation of sparks, heat generation, and burnout at the power connection terminal is prevented, an inexpensive and safe connector can be obtained, which is highly effective.

4. Brief description of the drawings The opening is on the use side 1 of a conventional connector.

5...Connector, 8.9...Case,
51...Signal connection terminal, 52...Power connection terminal.

Name of agent: Patent attorney Shigetaka Awano (1 person) Figure 2 8.9---ke I

Claims (1)

[Claims] It has a plurality of signal connection terminals and a plurality of power connection terminals of 3 amperes or more and 20 amperes or less, the signal connection terminals are arranged at both ends, and the case insulates the terminals from each other and the outer part that is touched by hands. connector.