JPH06260071A - Relay - Google Patents

Abstract

PURPOSE:To provide a relay having a small size in the lateral direction by forming an electromagnet section into a T-shape, and arranging contact sections on both sides of the electromagnet section. CONSTITUTION:An iron core 29 is fixed to a U-shaped yoke 27 to constitute a T-shaped electromagnet section. The other piece 27c of the yoke 27 is arranged below a coil 32. Main contact blocks B are arranged on both sides of the yoke 27 respectively. A relay having a small size in the lateral direction can be provided.

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 This type of relay is generally driven by an iron core around which a coil is wound, an armature attracted to the magnetic pole surface of the iron core, a yoke for magnetically coupling the armature, and a rotation of the armature. It is composed of contact points etc.

[0003]

In such a conventional example, there is a problem that the consideration for reducing the lateral dimension is not taken into consideration so much. The present invention has been made in view of the above points, and provides a relay having a T-shaped electromagnet portion and contact portions provided on both sides of the electromagnet portion and having a small lateral dimension. It is intended for.

[0004]

According to the present invention, the yoke is substantially L-shaped.
Formed in a mold, one piece of the yoke and the iron core are connected to form a substantially T-shaped electromagnet portion, the other piece of the yoke is disposed on the lower surface of the coil, and contact portions are provided on both sides of the electromagnet portion. It is arranged.

[0005]

Then, the yoke is formed in a substantially L shape, and one piece of the yoke is connected to the iron core to form a substantially T-shaped electromagnet portion.
The other piece of the yoke is arranged on the lower surface of the coil, and the contact portions are arranged on both sides of the electromagnet portion, thereby realizing a relay having a small lateral dimension and having two contact portions.

[0006]

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 multiplexing 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 transmitted 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 (± 24V) 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
The control data of s is taken in and the monitoring data signal is returned as a current mode signal (a signal which is short-circuited 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.

Further, the central control unit 1 is provided with a dummy signal transmitting means for constantly transmitting a dummy transmission signal in which the mode data signal MD is a dummy mode, any one of the monitoring terminal device 2 or the wireless relay terminal device 7, the outside. 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 generating 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 control unit 1, as described above,
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.

Further, 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. The monitoring terminal 2 and the control terminal 3 arranged in the distribution board 6 or the relay control panel 6a have a distribution board agreement size, and a remote control relay for load control is provided by the control output. (Latching relay that can be turned on and off also by a hand switch) 5 is controlled.

Next, a remote control relay used in the control terminal 3 will be described. FIG. 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.

Further, 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 of 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 the present embodiment, the relay 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 unit 58 and the received transmission signal are received. It is determined whether the data matches the address data of Vs, and the control data (dimming control data in the embodiment) that is transmitted subsequently when the address matches is taken in, and the relay Ry ₁ ...
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 to make 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 which constitutes 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. 6, 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 two upper and lower 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 receiving confirmation, 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 the 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 provided with the opening 62b and the filter 63. The nameplate 70 has switches SW ₁ and SW
A cutout portion 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.

Four sets of connection terminals 74 are provided at one end of the cover 60b for outputting the 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 are provided. Each terminal 74, 77 is composed of a terminal plate and a terminal screw.

In the circuit shown in 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 integrally projecting 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 of the conductive leaf spring 14 is fixed to the upper end of the conductive terminal board 13,
Is inserted into the hole 11a formed in 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.

Further, 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 central portion. ing.

The auxiliary contact block C arranged outside the one main contact block B is constructed as follows.
That is, the base of the leaf spring 25 having the fixed contact 23 fixed to the upper end of the auxiliary terminal plate 22 inserted through the hole of the base 11 and the movable contact 26 facing the fixed contact 23 at the tip is It is fixed to the upper end of the auxiliary terminal plate 24. The auxiliary terminal plate 24 is arranged so as 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 at the center of the upper surface of No. 1 will be described. A square hole 27a is formed in one piece 27b 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. Almost T-shaped iron core 29
Is inserted through the inside of the coil frame 31, and the protrusion 29a at the tip is fitted into the hole 27a of the yoke 27 and fixed by caulking or the like.
The iron core 29 is fixed to the yoke 27. At this time, iron core 2
9 is located in the central portion of the yoke 27 and constitutes a T-shaped electromagnet portion.

The end 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 recess 48 is formed at one end of the movable frame 36.
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 other piece 27c of the yoke 27 is arranged below the coil 32. The movable block D arranged above the coil block A includes a movable frame 36, two armatures 37, a permanent magnet 38, and the like. Movable frame 36 made of an insulator
A boss 49 which fits into the recess 48 is provided at one end of the shaft hole 40 into which the rotary shaft 35 is inserted.
Has been drilled. 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 box-shaped cover 46 made of an insulating material having a lower opening 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 air gaps formed between the magnetic pole surface 30 of the iron core 29 and the magnetic pole pieces 28. In this way, the movable block D is arranged above the coil block A to form a polar electromagnet block.

Then, the inner surface of the armature 37 is alternately turned on and off by exciting and non-exciting the coil 32.
And the magnetic pole piece 28 of the yoke 27 attracts 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 34a, and the other is a set terminal 34b for turning on the main contact and a reset terminal 34c 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 terminals 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 protrusion 51 of the movable frame 36 elastically contacts the leaf spring 25 of the auxiliary contact block C to open both terminals 23, 26. . Then, the set terminal 34b and the common terminal 3
When a voltage is applied to 4a, the coil 32 is excited and the one armature 37b is brought into contact with the magnetic pole surface 30 of the iron core 29, and
The other armature 37a is attracted by the magnetic pole pieces 28, respectively, and the movable frame 36 rotates clockwise about the rotation shaft 40 to be in the ON state.

That is, when the movable frame 36 rotates clockwise, the arm springs 41 and 50 urge the leaf spring 14 of the main contact block B to close both terminals 15 and 20, and Both terminals 23 and 26 are closed by the protrusion 51 separating from the leaf spring 25 and returning by the restoring force of the leaf spring 25 itself. In this state, when a voltage is applied to the reset terminal 34c and the common terminal 34a, the original state is restored.

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 18 to prevent the leaf spring 14 from melting and reduce the 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 an attractive force to prevent electromagnetic repulsion of the contacts. still,
In order to increase the current withstanding capacity of the leaf spring 14, it is sufficient to increase the cross-sectional area of the leaf spring 14 itself, 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 the present 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.

[0037]

As described above, according to the present invention, the yoke is formed in a substantially L shape, and one piece of the yoke is connected to the iron core to form a substantially T-shaped electromagnet portion, and the other piece of the yoke is coiled. Since the contact portions are arranged on the lower surface of the electromagnet portion and the contact portions are arranged on both sides of the electromagnet portion, a relay having a small lateral dimension and two contact portions can be realized.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of another embodiment.

FIG. 2 is a perspective view of the entire relay.

FIG. 3 is a plan view of a 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]

 27 Yoke 27b One piece 27c Other piece 28 Magnetic pole piece 29 Iron core 30 Magnetic pole surface 32 Coil 37 Amateur

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[Procedure amendment]

[Submission date] September 9, 1991

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0031

[Correction method] Change

[Correction content]

Then, by exciting and reverse exciting the coil 32, the inner side surface of the armature 37 is alternately alternated with the magnetic pole surface 30 of the iron core 29.
And the magnetic pole piece 28 of the yoke 27 attracts 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 34a, and the other is a set terminal 34b for turning on the main contact and a reset terminal 34c 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.

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] 0032

[Correction method] Change

[Correction content]

Further, 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 34b and the common terminal 3
When a voltage is applied to 4a, the coil 32 is excited and the one armature 37b is brought into contact with the magnetic pole surface 30 of the iron core 29, and
The other armature 37a is attracted by the magnetic pole pieces 28, respectively, and the movable frame 36 turns clockwise about the rotary shaft 35 to be turned on.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0033

[Correction method] Change

[Correction content]

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 34c and the common terminal 34a, the original state is restored.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

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

[Procedure Amendment 7]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 2

[Correction method] Change

[Correction content]

[Fig. 2]

Claims (1)

[Claims] 1. An armature that is attracted to a magnetic pole surface of an iron core around which a coil is wound by exciting or deexciting a coil, a yoke that magnetically couples with the armature, and a contact portion that is driven to open and close by rotating the armature. In a relay with
The yoke is formed in a substantially L shape, one piece of the yoke is connected to the iron core to form a substantially T-shaped electromagnet portion, and the other piece of the yoke is disposed on the lower surface of the coil, and both sides of the electromagnet portion are arranged. A relay characterized in that a contact portion is provided on each of the relays.