JPH08115647A - Remote control relay - Google Patents

Abstract

PURPOSE: To enable an operation test to be conducted at hand by connecting a test switch, having a normal mode and a test mode in which it can be forcibly turned on and off, to both an input circuit leading to a latching relay and to the power circuit of a large-capacity relay. CONSTITUTION: A latching relay LR is operated by an input signal from an input terminal 1 connected to a remote-control switch, and holds a contact until a reverse pulse is applied. In the relay LR, when power is transmitted to S the (a) contact of a first contact KLR1 is held, while when power is transmitted to R the (b) contact of the contact KLR1 is held. A second contact KLR2 also operates in combination with and in the same manner as the contact KLR1 . The contact D1 of a normally excited relay X makes and breaks a circuit between L-pole input terminals 2, 2 and an L-pole output terminal 3. In the normal mode of a switch SW, the contacts KLR1 and KLR2 of the relay LR are switched from one to the other in response to an input from the remote- control switch, and the contact KX of the normally excited relay X operates to turn on and off an output to the terminal 3. When the test switch SW is switched from the normal mode to a test mode, the large-capacity relay X can be turned on and off at hand.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control relay for performing remote control of electric equipment.

[0002]

2. Description of the Related Art A remote control relay for controlling household electrical equipment with a remote control switch has been conventionally known, but in order to confirm whether or not it operates normally, a remote control remote is located. There was a problem that it was necessary to turn the switch on and off, and the test took time.

[0003]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the prior art and to provide a remote control relay capable of performing an operation test without turning on / off a remote control switch at a remote position. It is a thing.

[0004]

SUMMARY OF THE INVENTION The present invention made to solve the above problems includes a latching relay that is turned on and off by a remote control switch, and a large capacity relay that is turned on and off in conjunction with the latching relay. It is characterized in that a test switch having a normal mode and a test mode capable of forced on / off is connected to an input circuit to the relay and a power supply circuit of the large capacity relay.

[0005]

In the remote control relay of the present invention, a test switch having a normal mode and a test mode capable of forced on / off is connected to the input circuit to the latching relay and the power circuit of the large capacity relay.
If this test switch is set to the normal mode, the large-capacity relay can be turned on / off by interlocking the latching relay by turning on / off the remote control switch. Further, by switching to the test mode at the time of the test, the large capacity relay can be forcibly turned on and off by hand, and the operation test can be easily performed.

[0006]

The present invention will be described below in more detail with reference to the illustrated embodiments. FIG. 1 is a circuit diagram of a remote control relay of the embodiment, and FIG. 2 is an external view thereof.

In FIG. 1, LR is operated by an input signal from an input terminal 1 connected to a remote control switch,
It is a latching relay that holds a contact until a reverse pulse is applied, where K _LR1 is its first contact and contact K _LR2 is its second contact. In this latching relay LR, the a contact of the first contact K _LR1 is held when S is energized,
When the R is energized, the b contact of the first contact K _LR1 is held. The second contact K _LR2 is also the first
It operates in the same way as the contact K _{LR1 of} .

A diode bridge DB and a constant excitation relay X which is a large capacity relay are connected to the second contact K _LR2 . The contact K _X of this constantly exciting relay _X is
The L-pole input terminals 2 and 2 and the L-pole output terminal 3 are turned on and off. Therefore, when the test switch SW described below is in the normal mode, when there is an input from the remote control switch, the second contact K _{LR2 as} well as the first contact K _LR1 of the latching relay LR is switched, and the constant excitation relay X The contact K _{X of} is operated to turn on / off the output to the L pole output terminal 3. The diode bridge DB is adopted here because the excitation relay X is always operated by direct current to prevent the beat.

As shown in FIG. 2, a test switch SW is provided at the center of the upper surface of the case. The test switch SW has two sets of three contacts 4, 5, and 6 as shown in FIG. One set of the contacts of the test switch SW is provided in the input circuit from the input terminal 1 to the latching relay LR, and the other set is in the power supply circuit from the N pole input terminal 7 to the large capacity relay X. It is provided. These two sets of contacts work in tandem in conjunction.

Of these contacts, the upper contact 4 is for normal mode. When the test switch SW is in this normal mode, as described above, the latching relay LR is operated by the remote control switch to activate the contact K _X of the constant excitation relay X to turn on / off the output to the L pole output terminal 3. can do.

The middle contact 5 and the lower contact 6 of the test switch SW are contacts for the test mode.
That is, when the test switch SW is put in the middle contact 5, the power supply circuit to the large capacity relay X is forcibly turned on regardless of the state of the second contact K _LR2 of the latching relay LR, and the L pole output terminal 3 Output to.

Further, if the test switch SW is inserted in the lower contact 6, the power supply circuit to the large capacity relay X is forcibly turned off regardless of the state of the second contact K _LR2 of the latching relay LR, and the L pole output is produced. No output to terminal 3 occurs.

As described above, by switching the test switch SW from the normal mode to the test mode, the large capacity relay X can be forcibly turned on and off at hand, and the operation test can be easily performed. In FIG. 1, DR _a and DR _b are diodes, LD _a and LD _b are light emitting diodes that indicate the operating state of the latching relay LR, and DK _a and DK _b are kickback prevention diodes.

[0014]

As described above, the remote control relay of the present invention is a test switch having a normal mode and a test mode capable of forced on / off in the input circuit to the latching relay and the power circuit of the large capacity relay. By connecting, there is an advantage that an operation test can be performed at hand.

[Brief description of drawings]

FIG. 1 is a circuit diagram of a remote control relay according to an embodiment.

FIG. 2 is an external view of a remote control relay of the embodiment.

[Explanation of symbols]

1 remote control signal input terminal 2 L pole input terminal 3 L pole output terminal 4 test switch SW normal mode contact 5 test switch SW test mode contact 6 test switch SW test mode contact LR latching relay K _LR1 latching relay 1st contact of K _LR2 2nd contact of latching relay DB diode bridge X Always energizing relay which is a large capacity relay K _X Contact of energizing relay SW test switch DR _a diode DR _b diode LD _a light emitting diode LD _b light emitting diode DK _a kickback prevention diode DK _b kickback prevention diode

Claims (1)

[Claims] 1. A latching relay that is turned on / off by a remote control switch, and a large capacity relay that is turned on / off in conjunction with this are provided, and an input circuit to the latching relay and a power supply circuit of the large capacity relay are provided with a normal mode, A remote control relay characterized by connecting a test switch equipped with a test mode that allows forced on / off.