JP4142320B2 - 2-pole remote control relay - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to miniaturization of a remote control relay that turns on and off a contact by an external control signal.
[0002]
[Prior art]
Conventionally, as shown in FIG. 4, the above-mentioned remote control relay has a contact device composed of a set of movable contact 1 and fixed contact 2, an electromagnetic drive device 3 for rolling and holding the movable contact in an on or off state, and an input of the contact. Current direction control means 4 for selecting and restricting the drive direction of the electromagnetic drive device in the current direction according to the cut-off state is provided, and terminals 5 and 6 and control terminals 7 and 8 of the main circuit are added to the inside of one housing 9 The one-pole one housed in the was common. In the figure, 10 is a remote control transformer installed outside the remote control relay, and 11 is a switch for controlling the remote control relay to constitute an external control circuit.
[0003]
In FIG. 4, the coil portion 31 of the electromagnetic drive device 3 is held in the right direction of the drawing relative to the permanent magnet device 32, and the current direction limiting means 4 is arranged on the c side according to the position of the coil portion 31. The contact is open and the d-side contact is closed. Therefore, current flows only in the coil portion 31 in a polarity limited by the diode on the d side. At this time, the switch 11 is not connected to either a nor b, the coil portion 31 is held at the position shown in the figure by the electromagnet 32, and the contact device is held in the cut state.
[0004]
Next, to turn on the main circuit contact device, the switch 11 is brought into contact with the a side. At this time, since the direction of the diode on the a side of the switch 11 coincides with the direction of the diode on the d side of the current direction limiting means 4, if the winding direction of the coil unit 31 is properly selected, the coil unit 31 moves to the left in the figure. The movable contact 1 contacts the fixed contact 2. Even when the switch 11 is opened, the coil part 31 is held in position by the permanent magnet part 32 and the contact is kept on, and the current direction limiting means 4 is in a state where the c-side contact is closed and the d-side contact is opened. It will be retained. In the above description, even if the aforementioned switch 11 is mistakenly operated to the b side, the direction of the diode on the d side of the current direction control means 4 is reversed, so the coil portion 31 does not move.
[0005]
In the above, the thickness of the housing 9 is governed by the thicknesses of the contact devices 1 and 2 and the electromagnetic drive device 3, and the contact devices 1 and 2 and the electromagnetic drive device 3 have substantially the same thickness. It was finally possible to have a contact device for one pole inside.
[0006]
Therefore, for example, when the control circuit is used for a single-phase three-wire 200V circuit, and if two-pole contacts are required, it is necessary to mount two one-pole remote control relays side by side, which increases the size. Since the electromagnetic drive device 3 is required for each pole contact device, there is a drawback that the use efficiency of the members is poor.
[0007]
The invention of the present invention is to provide a two-pole remote control relay having a single pole size in the above-described remote control relay, and to provide a two-pole remote control relay that is miniaturized and has good member use efficiency.
[0008]
[Means for Solving the Problems]
In view of this, the present invention provides a rotating frame having a rotating shaft and each pole that is insulated and held by the rotating frame and extends radially in the opposite direction from the rotating shaft of the rotating frame . The movable contact member, two fixed contact members that come in contact with and away from the movable contact member by rolling of the rotating frame body, and the electromagnetic drive that holds the rotating frame body in the contact-on state or the contact-off state and switches the state. Current direction restricting means for selectively restricting the direction of operation current of the electromagnetic drive means in a state of holding contact or holding contact, and one of the movable contact members and one of the movable contact members The terminal of the 1st pole connected to the fixed contact member arrange | positioned facing a contact member is provided in the one end side of a container, and opposes the other movable contact member and this other movable contact member. A second contact connected to the fixed contact member disposed Is obtained by providing a two-pole remote control relay, characterized in that the terminal is configured provided on the other end of the device body.
[0009]
Thereby, since the two movable contact members are held so as to extend radially from the rotating frame, the two-pole contact device can be accommodated in the same case with the thickness of one movable contact member. A two-pole remote control relay can be constructed with a pole thickness.
[0010]
According to a second aspect of the present invention, the electromagnetic driving means is composed of a polarized electromagnet that is held in two positions. As a result, a two-pole remote control relay having a high operating speed from on to off or vice versa can be configured.
[0011]
According to a third aspect of the present invention, the electromagnetic drive means is constituted by a DC motor having a speed reduction means. This makes it possible to configure a two-pole remote control relay that can sufficiently take the contact pressure of the contact while using a small DC motor.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a conceptual diagram of the present invention corresponding to FIG. In the figure, the electromagnetic drive means 3, current limiting means 4, remote control transformer 10, and switch 11 are the same as those in FIG. Reference numeral 16 denotes a rotating frame that rolls about the shaft 161 and rotates counterclockwise or clockwise in conjunction with the movement of the coil portion 31 of the electromagnetic driving means 3. Two movable contact members 18 and 19 are insulated from each other about the rotation shaft 161 and held radially extending alternately on the rotary frame 16. 17 and 20 are fixed contact members, and 17 and 18 constitute one set of contact devices, 19 and 20 constitute another set of contact devices, and 12 and 13 are main circuit connections connected to the contact devices composed of 17 and 18. Terminals 14 and 15 are main circuit connection terminals connected to a contact device composed of 19 and 20.
[0013]
FIG. 1 shows a state in which the fixed contact member 17 and the movable contact member 18 and the fixed contact member 20 and the movable contact member 19 are turned off. By operating the switch 11 to the a side, the coil member 31 is shown in FIG. , The rotating member 16 rotates counterclockwise in the figure, and 17, 18, 19, and 20 come into contact with each other, so that the main circuit terminals of 12, 13, 14, and 15 are brought into an on state. Become.
[0014]
The relationship between the operation of the switch 11 and the operation of the current direction limiting means 4 and the electromagnetic driving means 3 is the same as that described with reference to FIG.
[0015]
FIG. 2 shows an embodiment in which FIG. 1 is embodied more realistically, and the same reference numerals are used. In FIG. 2, the main circuit terminals 12 to 15, the control terminals 7 to 8, the fixed contact members 17 and 20, and the permanent magnet portion 32 are fixed to the housing 9. The rotating shaft 161 is also supported on the housing 9. The coil portion 31 is supported and fixed by an open arm portion of a Y-shaped arm portion that integrally extends from the rotary frame body 16, and the coil portion 31 rotates to the left and right in the drawing with respect to the permanent magnet portion 32. By moving, the rotating frame 16 rolls counterclockwise and clockwise, and the contacts 17 and 18, 19 and 20 are turned on and off. Both ends of the Y-shape are protruding, and are configured to be located at the contacts c and d of the current direction limiting means, respectively, and open the contacts c or d according to the on / off position of the main circuit contact. Yes. In the embodiment shown in FIG. 2, since the polarized electromagnet is used for the electromagnetic drive device, the on / off state can be switched instantaneously.
[0016]
FIG. 3 is a diagram illustrating only the motor and the periphery of the rotating frame when the DC motor 101 is used in the electromagnetic drive device 100. In the figure, reference numeral 102 denotes a speed reduction means using a gear, and the rotation of the motor rotates the rotating frame body 200 through the worm gear device 103. The switches c and d of the current direction limiting means are operated by moving the switching member 300 interlocking with the rolling of the rotating frame body 200 in the left-right direction in the figure. When a motor as shown in FIG. 3 is used for an electromagnetic drive, switching between on and off takes a little time compared to that of FIG. 2, but the operating force of the rotating frame can be increased by the action of the speed reduction means. Therefore, the contact pressure of the contacts 17 and 18, 19 and 20 can be increased.
[0017]
【The invention's effect】
The two-pole remote control relay configured as described above has an effect that a two-pole contact device can be incorporated into the thickness of one contact device and a small two-pole remote relay can be formed with a small thickness.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram of a two-pole remote control relay according to the present invention. FIG. 2 is a diagram of a first embodiment according to the present invention. FIG. 3 is a diagram of a second embodiment according to the present invention. Conceptual diagram of remote control relay [Explanation of symbols]
3 .. Electromagnetic driving device 4... Current direction limiting means 16... Rotating frame 161 .. Rotating shafts 17 and 20 .. Fixed contact members 18 and 19.

Claims (3)

Rotating frame having a rotating shaft, movable contact members of respective poles that are insulated from each other by the rotating frame and extend radially in the opposite direction from the rotating shaft of the rotating frame, Two fixed contact members that come in contact with and move away from the movable contact member by rolling of the frame body, an electromagnetic drive means for holding the rotating frame body in a contact-on state or a contact-off state, and switching driving the state; It includes a current direction limiting means for selectively limiting the direction of the operation current of the electromagnetic drive means in a state of contact switching holding, while the movable contact member of said movable contact member, to face the movable contact member of the one A terminal of a first pole connected to the fixed contact member to be disposed is provided on one end side of the vessel body, the other movable contact member, and the fixed contact member disposed to face the other movable contact member the other end of the second pole terminal device body of which is connected to the bets 2-pole remote control relay, characterized in that it is configured provided. 2. The two-pole remote control relay according to claim 1, wherein the electromagnetic driving means is a two-positioned polarized electromagnet. 2. The two-pole remote control relay according to claim 1, wherein the electromagnetic drive means is a direct current motor having a speed reduction means.

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