JPH0582000A - Relay - Google Patents

Abstract

PURPOSE:To return the control state of load to a central processing unit in a remote monitoring control system by providing an auxiliary contact block and utilizing the auxiliary contact block. CONSTITUTION:An auxiliary contact block C is provided on the side of a main contact block B. The auxiliary contact block C is simultaneously controlled according to the opening and closing of the main contact block B. Thus, by use of the auxiliary contact block C, the control state of the load controlled by the main contact block B is monitored. The contact output of the auxiliary contact block C is returned to a central processing unit within the return waiting period of return signal. Thus, this relay can be used in a remote monitoring control system.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Generally, a remote supervisory control system receives a transmission signal, which is time-division-multiplexed and transmitted through a signal line, from a central control unit on the terminal side and coincides with a preset own unique address. Is configured to control the load based on the control data following the address data, and to return the monitored state of the load to the central control unit within the return waiting period following the control data.

A conventional relay used on the terminal side of the above system generally has a coil frame around which a coil is wound, an iron core projecting from both ends in the coil frame, and a magnetic pole face of the iron core. It is composed of an armature, a yoke for magnetically coupling with the armature, a main contact block opened and closed by the rotation of the armature, and the like.

[0004]

In such a conventional example, although there is a main contact block for controlling the load,
When the load state is monitored and the control state of the load is returned to the central control unit, there is a problem that the relay cannot be returned because the relay is only the main contact block.

The present invention has been provided in view of the above-mentioned points, and in the remote monitoring control system, the auxiliary contact block is provided, and by utilizing this auxiliary contact block, the control state of the load to the central control unit is controlled. The purpose is to provide a relay that can be sent back.

[0006]

According to the present invention, when a transmission signal, which is time-division-multiplexed and transmitted through a signal line, is received by a terminal device from a central control unit and the received signal coincides with a preset own unique address. Is a remote control monitoring system in which the load is controlled based on the control data following the address data and the monitoring status of the load is returned to the central control unit within the return waiting period following the control data. In the relay for controlling the load installed on the main block, main contact blocks that are opened and closed by movable blocks that are driven by coil excitation etc. are arranged on both sides of the coil block, and the main contact blocks are opened and closed at the same time. An auxiliary contact block that opens and closes is provided.

[0007]

Thus, an auxiliary contact block that opens and closes at the same time as the opening and closing of the main contact block is provided, and by using this auxiliary contact block, the control state of the load can be returned to the central control unit.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. First, before describing the remote control relay itself, a schematic configuration of a remote monitoring control device using this remote control relay and performing monitoring control by time division multiplex transmission will be described. FIG. 4 shows a schematic configuration of a remote monitoring control system using a remote control relay according to the present invention.
A plurality of monitoring terminals 2 for setting the unique addresses and monitoring the switches S _{1 to} S ₄ , a control terminal 3 for controlling the loads L _{1 to} L ₄ , a wireless relay terminal 7, an external interface terminal 8 and The selector switch terminal 9 is connected by a pair of signal lines 4.

The transmission signal Vs sent from the central control unit 1 to the signal line 4 is, as shown in FIG. 5A, a start pulse signal ST indicating the start of signal transmission, a mode data signal MD indicating the signal mode, and a terminal. vessels 2, 3, address data signal AD for transmitting 8-bit address data for calling the 7-9, the control data signal CD for transmitting the control data for controlling the load L ₁ ~L _4, check sum data signal CS and the terminal device It is a multi-pole (± 24 V) time division multiplex signal composed of a return standby signal WT for setting a return period from 2, 3, 7 to 9, and data is transmitted by pulse width modulation.

In each of the terminals 2, 3, 7-9, when the address data of the transmission signal Vs received via the signal line 4 and its own unique address data match, the transmission signal V
s control data is taken in, and the monitoring data signal is returned as a current mode signal (a signal sent by short-circuiting between the signal lines 4 via an appropriate low impedance) in synchronization with the return standby signal WT of the transmission signal Vs. It is supposed to do.

In the central control unit 1, dummy signal transmitting means for constantly transmitting a dummy transmission signal in which the mode data signal MD is set to a dummy mode, any monitoring terminal device 2 or wireless relay terminal device 7, and the external device. When the interrupt signal Vi returned from the interface terminal device 8 and the selector switch terminal device 9 as shown in FIG. 5B is received, the interrupt generation terminal devices 2, 7 to 9 are detected and the terminal device 2, An interrupt processing means for accessing 7 to 9 to return the monitoring data is provided.

Further, in the central controller 1, as described above,
Then, the monitoring terminal 2 or the wireless relay terminal 7,
External interface terminal 8, selector switch terminal
Based on the monitoring data returned from the device 9 to the central control unit 1.
Corresponding load L₁~ L_FourControl terminal 3 for controlling
Create the control data to be transmitted and
Data to the control terminal device 3 via the signal line 4 by time division multiplexing.
Transmit and load L₁~ L _FourTo control.

The wireless relay terminal device 7 is a terminal device for relaying data of an optical wireless system including an optical wireless transmitter X, an optical wireless receiver Y and a wireless signal line 4a, and is transmitted from the optical wireless transmitter X. The optical wireless receiver Y receives the received optical signal, the received data is received via the wireless signal line 4a, and the data is transferred to the central controller 1.

The external interface terminal 8 is
The selector switch terminal 9 is a terminal that performs data transmission with the external control device 8a, and is a terminal that centrally controls a large number of loads. Incidentally, the monitoring terminal 2 and the control terminal 3 arranged in the distribution board 6 or the relay control board 6a have a distribution board agreement size, and the control output thereof causes a remote control relay for load control. (Latching relay that can be turned on / off by a hand switch) 5 is controlled.

Next, the remote control relay used in the control terminal 3 will be described. 6 shows an exploded perspective view of the control terminal device 3, and FIG. 7 shows a block diagram. Here, the remote control relays are represented by Ry ₁ to Ry ₄ . The transmission module 59 includes a signal processing circuit including a microcomputer, an address setting unit 58 formed by an EEPROM, a photodiode PD, a light emitting diode LD, and the like.

As shown in FIG. 7, four sets of output sides of the transmission module 59 are connected to remote control relays Ry _{1 to} Ry _{4 which} are two-winding latching relays each having a set winding S and a reset winding R. I am doing it. Each relay Ry ₁ ~
Ry ₄ has main contacts R _{1 to} R ₄ and auxiliary contacts r _{1 to} r ₄ , and a load is connected between the main contacts R ₁ ...
The contact outputs ₁ ... Are input to the signal processing circuit of the transmission module 59 and returned to the central controller as a monitoring signal.

Normally, arbitrary relays Ry ₁ ... Are driven based on control data transmitted from the central control unit to control on / off of the load connected to the main contacts R _1. However, in this embodiment, the relays Ry ₁ ...
The switches SW ₁ and SW ₂ for directly turning on and off the power source and turning the load on and off are provided. The switch SW ₁ is a switch for collectively turning on the relays Ry ₁ ... And the switch SW ₂ is a relay Ry.
It is a switch that turns off ₁ ...

Now, the transmission signal Vs transmitted through the signal line 4 is input to the signal processing circuit of the transmission module 59, and the unique address data set in the address setting section 58 and the received transmission signal are received. The relay Ry ₁ ... Corresponding to the designated load is determined by determining the match with the Vs address data and taking in the control data (dimming control data in the embodiment) that is transmitted subsequently when the address matches.
To control.

Here, the relays Ry ₁ ... Energize the reset winding R or the set winding S of the relay Ry ₁ by the signal output from the transmission module 59, and the main contact R.
Control ₁ off or on. The load is controlled to be turned on or off by turning on / off the main contact R ₁ . The load state is created as a monitoring signal indicating the operating state of the load by inputting the contact output of the auxiliary contact r ₁ of the relay Ry _{1 to} the transmission module 59. A return signal V _B for returning the monitoring data to be returned to the central controller 1 as a current mode signal (a resistor R having a low resistance value is inserted between the signal lines 4) is sent to the signal line 4. ..

On the other hand, the EE forming the address setting unit 58
Writing data to the PROM is performed by the transmission module 59.
Signal processing circuit. Figure 6
As shown in FIG. 2, the terminal case 60 is formed in a module size of two pieces of the distribution board agreement size.
Reference numeral 0 is composed of a body 60a and a cover 60b, and the body 60a and the cover 60b are assembled and coupled by a fixing screw 73.

The printed circuit board block 61 is composed of upper and lower two printed circuit boards 61a and 61b. The upper printed circuit board 61a has a signal processing circuit composed of a microcomputer and an address setting section 58 composed of an EEPROM.
And a photodiode P for transmitting and receiving an optical wireless signal
D and a light emitting diode LD, a light receiving diode LDc for confirmation of reception, and switches SW ₁ and SW ₂ for collective control are mounted. Further, relays Ry _{1 to} Ry ₄ are mounted on the lower printed circuit board 61b.

The upper printed circuit board 61a is provided on the back surface of the cover 60b with screws 72, and the opening 62a corresponding to the light emitting diode LD and the photodiode PD is provided on the front surface of the terminal case 60, that is, one end side of the cover 60b.
And an opening 62 corresponding to the confirmation light emitting diode LDc.
b are provided respectively, and a filter 63 for cutting unnecessary infrared rays is provided in the opening 62a for transmitting and receiving the optical wireless signal.

Further, the light emitting diode LDc is provided with an opening 62.
The translucent nameplate 70 is attached to the concave portion 67 of the cover 60b having the opening 62b and the filter 63. The nameplate 70 has switches SW ₁ and SW
A notch 70a is formed to expose the _second operation portion.
In the case of a non-transparent nameplate, the opening 62b and the filter 63 may be cut out.

At one end of the cover 60b are provided four sets of connection terminals 74 for outputting contact outputs of the main contacts R ₁ ... Provided with lead wires 75. These connection terminals 74 are screwed with screws 78. It is covered with the attached terminal cover 79. Also,
A signal terminal 7 to which a signal line is connected to the other end of the cover 60b
7 and are provided. Each terminal 74, 77 is composed of a terminal plate and a terminal screw.

In the circuit of FIG. 7, terminals T _{1 to} T
₈ corresponds to the connection terminal 74, and the signal terminal 77 corresponds to the terminals T ₉ and T ₁₀ . On the other hand, terminal case 6
No. 0 body 60a is provided with a mounting groove 66 to which a connecting plate or a DIN rail mounting adapter is mounted. Next, the remote control relay which is the gist of the present invention will be described. This remote control relay corresponds to the remote control relays Ry ₁ ... Also, the main contact R
₁ corresponds to the main contact block B, and auxiliary contacts r ₁ ... correspond to the auxiliary contact block C.

FIG. 1 is an exploded perspective view of the whole, FIG. 2 is a perspective view, and FIG. 3 is a plan view. The coil block A is arranged in the center of the upper surface of the base 11 made of an insulating material, the main contact blocks B are arranged outside the two partition walls 12 projecting integrally from the base 11, and the auxiliary contact block is arranged on the other side. C is provided. First, the main contact block B will be described. Two main contact blocks B are formed, but since they have the same structure, one main contact block B will be described. That is, the base portion of the conductive leaf spring 14 is fixed to the upper end portion of the conductive terminal plate 13,
Is inserted into the hole 11a formed in the base 11 and the base 11
It is supposed to be placed in. The movable contact 15 is fixed to one surface of the tip of the leaf spring 14, and the conductor plate 16 is fixed to the other surface. Then, the movable contact 15 and the leaf spring 14
The conductor plate 16 is fixed in three layers. That is, the leaf spring 14 and the conductor plate 16 are simultaneously caulked and fixed by the movable contact 15.

An iron piece 17 is fixed to the lower part of the conductor plate 16. A flexible braided conductor 18 is spot-welded and connected between the lower portion of the conductor plate 16 and the central portion of the terminal plate 13 in parallel with the leaf spring 14. A fixed contact 20 facing the movable contact 15 is fixed to the upper end of a conductive terminal plate 19 arranged in the hole 11b of the base 11, and a substantially U-shaped iron piece 21 is provided in the center. ing.

The auxiliary contact block C arranged outside one of the main contact blocks B is constructed as follows.
That is, the fixed contact 23 is fixed to the upper end of the auxiliary terminal plate 22 that is inserted through the hole of the base 11, and the base of the leaf spring 25 having the movable contact 26 facing the fixed contact 23 is fixed to the tip. It is fixed to the upper end of the auxiliary terminal plate 24. Then, the auxiliary terminal plate 24 is arranged to be inserted into the hole of the base 11.

Next, the base 1 between the two main contact blocks B
The coil block A arranged in the center of the upper surface of No. 1 will be described. A square hole 27a is formed in one piece of the yoke 27 bent into an L shape, and magnetic pole pieces 28 are erected so as to face each other from both ends of the other piece. A substantially T-shaped iron core 29 is inserted through the inside of the coil frame 31, and a projection 29a at the tip is fitted into a hole 27a of the yoke 27 and fixed by caulking or the like.
9 is fixed to the yoke 27. At this time, the iron core 29 is located in the central portion of the yoke 27 to form a T-shaped electromagnet portion.

The end portion of the iron core 29 extends from the coil frame 31, and both side surfaces serve as magnetic pole surfaces 30. A coil 32 is wound around the outer peripheral surface of the coil frame 31, and one thick walled flange portion 33 of the coil frame 31 has three coil terminals 34 connected to the ends of the coil 32 embedded therein. A protrusion 33a is formed on the upper surface of the collar portion 33, and a substantially circular recess 48 is formed in the protrusion 33a, and a rotary shaft 35 is protruded at the center of the recess 48.

The movable block D disposed above the coil block A includes a movable frame 36 and two armatures 37 (3
7a, 37b) and a permanent magnet 38 and the like. The recess 48 is formed at one end of the movable frame 36 made of an insulator.
A boss 49 that fits into the boss 49 is provided in a protruding manner, and a shaft hole 40 into which the rotary shaft 35 is inserted is bored in the boss 49. The shaft hole 40 is pivotally supported by the rotating shaft 35 of the coil frame 31, and the movable frame 36 is rotatable. Two armatures 37 sandwiching a permanent magnet 38 are arranged on the lower surface of the other end of the movable frame 36, and arm portions 41, 50 for driving the leaf springs 14 are formed on both sides of the movable frame 36.

Protrusions 4 formed on both arm portions 41 and 50, respectively.
The leaf springs 14 of both main contact blocks B are arranged in the slits 44 between 2 and 43. Further, a projection 51 for urging the leaf spring 25 of the auxiliary contact block C is provided at the tip of the arm 50 so as to project. A cover 46 made of an insulating material having a box-shaped lower surface is provided on the base 11 on which the above-mentioned members are arranged. When the movable block D is arranged on the coil block A, The leaf spring 14 of the contact block B is housed in the slit 44 of the movable frame 36, and the protrusion 51 is positioned inside the leaf spring 25 of the auxiliary contact block C. Both armatures 37 are positioned between a pair of voids formed between the magnetic pole surface 30 of the iron core 29 and the magnetic pole piece 28. In this way, the movable block D is arranged above the coil block A to form a polar electromagnet block.

Then, by exciting and reverse exciting the coil 32, the inner surface of the armature 37 is alternated with the magnetic pole surface 30 of the iron core 29.
And the magnetic pole piece 28 of the yoke 27 is attracted to the movable frame 36.
By rotating the main contact block B and the auxiliary contact block C
I am trying to drive. By the way, the coil 32 has 2
Although it is a winding and is connected to the coil terminal 34 as described above, one coil terminal 34 is a common terminal 34c and the other is a set terminal 34a for turning on the main contact and a reset terminal 34b for turning off the main contact. Is. Now, in the non-excited state, one armature 37a is attracted to the iron core 29 and the magnetic pole piece 28 of the other armature 37b is attracted by the magnetic flux of the permanent magnet 38, so that both contacts 15 and 20 of the main contact block B are in the open state. is there.

Since the movable frame 36 is biased in the counterclockwise direction, the projection 51 of the movable frame 36 elastically contacts the leaf spring 25 of the auxiliary contact block C to open both contacts 23, 26. . Then, the set terminal 34a and the common terminal 3
When a voltage is applied (set) to 4c, the coil 32 is excited and one armature 37b moves to the magnetic pole surface 30 of the iron core 29.
In addition, the other armature 37a is attracted to the magnetic pole pieces 28, respectively, and the movable frame 36 rotates clockwise about the rotation shaft 35 to be in the ON state.

That is, when the movable frame 36 is rotated clockwise, the leaf springs 14 of the main contact block B are urged by the arms 41 and 50 to close both contacts 15 and 20, and When the protrusion 51 is separated from the leaf spring 25 and is restored by the restoring force of the leaf spring 25 itself, both contacts 23 and 26 are closed. In this state, when a voltage is applied to the reset terminal 34b and the common terminal 34c, the original state is restored.

In this way, the auxiliary contact block C which is turned on at the time of setting is provided, and as a signal for monitoring the state of the load that controls the contact output of this auxiliary contact block C, it is sent to the central control unit within the waiting period for returning the transmission signal. By returning it, this relay can be used in a remote monitoring and control system. Here, in the main contact block B of the main contact,
Since the braided conductor 18 is connected in parallel with the leaf spring 14,
When a large current such as a short-circuit current flows, the current is shunted between the leaf spring 14 and the braided conductor wire 18 to prevent melting of the leaf spring 14 and reduce heat generation of the leaf spring 14. It also prevents melting of the arm portions 41 and 50, which are spring driving portions of the frame 36.

When a short circuit current flows, the conductor plate 16
The iron pieces 17 and 21 provided on the terminal plate 19 generate a suction force to prevent electromagnetic repulsion of the contacts. still,
In order to increase the current withstanding capacity of the leaf spring 14, the cross-sectional area of the leaf spring 14 itself may be increased, but in this case, the spring load becomes large, and matching with the attraction force of the electromagnet of the movable block D becomes difficult. turn into.

However, in this embodiment, since only the leaf spring 14 having a small cross-sectional area is pushed, the spring load similar to that of the conventional relay can be obtained. Although the braided conductor 18 is attached to the conductor plate 16 in this embodiment, the braided conductor 18 may be directly connected to the back surface of the movable contact 15 or the like. In the embodiment of the present invention, the main contact side is the flexure and the auxiliary contact side is the lift-off type, but the invention is not limited to this. Further, on the auxiliary contact side, in order to improve reliability, the contacts 23 and 26 are plated with gold or the like.

[0039]

As described above, according to the present invention, when the terminal device receives the transmission signal which is time-division-multiplexed transmitted through the signal line from the central control unit and coincides with the preset own unique address. Is a remote control monitoring system in which the load is controlled based on the control data following the address data, and the monitoring status of the load is returned to the central control unit within the return waiting period following the control data. In the relay for controlling the load installed on the main block, main contact blocks that are opened and closed by movable blocks that are driven by coil excitation etc. are arranged on both sides of the coil block, and the main contact blocks are opened and closed at the same time. Since the auxiliary contact block that opens and closes is provided, an auxiliary contact block that opens and closes simultaneously according to the opening and closing of the main contact block is provided, and this auxiliary contact block is used. It is possible to return the control state of the load to the central control unit, this relay in which an effect that can be used for remote monitoring and control system.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention.

FIG. 2 is an overall perspective view of the above relay.

FIG. 3 is a plan view of the above relay.

FIG. 4 is a schematic system diagram of a remote control system using the present relay.

5 is an operation explanatory diagram of FIG. 4;

FIG. 6 is an exploded perspective view of a control terminal device.

FIG. 7 is a block circuit diagram of a control terminal device.

[Explanation of symbols]

 1 Central Control Unit 2 Monitoring Terminal 3 Control Terminal 4 Signal Line 32 Coil A Coil Block B Main Contact Block C Auxiliary Contact Block D Movable Block

Claims (1)

[Claims] 1. The control data following the address data when a transmission signal time-division-multiplex-transmitted via a signal line is received from the central control unit at the terminal side and coincides with a preset own unique address. It is a remote control monitoring system that controls the load based on the control data and returns the monitoring status of the load to the central control unit within the return waiting period following the control data, and is provided on the terminal side to control the load. In the relay, main contact blocks that are opened and closed by movable blocks that are driven by coil excitation, etc. are arranged on both sides of the coil block, and auxiliary contact blocks that are opened and closed simultaneously according to the opening and closing of the main contact block are provided. A relay characterized by that.