JPH06243771A - Relay - Google Patents

Abstract

PURPOSE:To position a movable frame horizontally and to reduce a friction force with a coil frame so as to stabilize an actuation by providing a projection, which supports a movable frame opening/closing a contact by the rotation, on both sides of a rotary shaft in a flange part, of a coil frame. CONSTITUTION:An iron core is arranged in the inside of a coil frame 31, in which a coil is wound up, and an armature, which is positioned between an opposed pole face of the iron core and a magnetic pole piece tip forming a magnetic circuit and is attracted and driven, is provided. The armature is installed on a rotary shaft 35, which is projectingly arranged in a flange part 33 of the coil frame 31, freely rotationally and is fixed in a movable frame 36, which opens/closes a contact by its rotation. Projections 52 are arranged on the upper faces of the flange part 33 on both sides of the shaft 35 so that the frame 36 is supported by two points and positioned without any inclination horizontally. The contact area between the coil frame 31 and the movable frame 36 is reduced so as to reduce the friction force, so that the movable frame 36 is stably operated.

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 A conventional relay of this type is shown in FIG.
A main contact block B and an auxiliary contact block C are arranged on both sides of the base 11, and a coil block A including a yoke 27, an iron core 29, a coil frame 31 around which a coil 32 is wound, and the like is arranged in the center. . A movable block D including a movable frame 36, an armature 37, and a permanent magnet 38 is rotatably arranged in the coil block A. A cover 46 is provided on the base 11.

A rotary shaft 35 is projected from the flange portion 33 of the coil frame 31, and a shaft hole 40 axially supporting the rotary shaft 35 is formed at the end of the movable frame 36. Movable frame 36
By inserting the rotating shaft 35 of the coil frame 31 into the shaft hole 40, the movable frame 36 is rotatable about the rotating shaft 35.

[0004]

The shaft supporting structure of the movable frame 36 in the conventional example has a structure as shown in FIG. 13, and the lower surface of the boss 49 of the movable frame 36 forming the shaft hole 40 is The movable frame 36 is positioned by contacting the bottom surface of the recess 48 provided with the rotary shaft 35 protruding therefrom. In this case, boss 4
Since the movable frame 36 is positioned on the lower surface of 9, the positioning of the movable frame 36 becomes unstable.

FIG. 14 shows another conventional example, in which the boss 4 is used.
The lower surface of 9 is floated from the bottom surface of the recess 48, and the lower surface of the movable frame 36 is brought into contact with the upper surface of the flange portion 33 of the coil frame 31 to position the movable frame 36. In this case, since the lower surface of the movable frame 36 is in contact with the entire upper surface of the flange 33, there is a problem that the frictional force increases and the operation becomes unstable.

The present invention has been provided in view of the above points, and an object of the present invention is to position a movable frame, reduce a frictional force acting between the movable frame and a coil frame, and obtain a stable operation. It is intended to provide a relay.

[0007]

SUMMARY OF THE INVENTION The present invention is directed to an iron core inserted in a coil frame around which a coil is wound, a yoke forming a magnetic circuit with the iron core, a magnetic pole surface of the iron core facing each other, and a magnetic pole of the yoke. It is equipped with an armature that is located between the two and is driven by suction, and a movable frame that is fixed to the armature and that is pivotally supported by a rotating shaft that projects from the flange of the coil frame. In a relay that is configured to open and close, protrusions that support a movable frame are provided on both sides of a rotary shaft in a collar portion of a coil frame.

[0008]

The movable frame is positioned horizontally without tilting by the two-point support by the projections on both sides of the rotary shaft, and the contact area between the movable frame and the coil frame is reduced to reduce the frictional force. The movable frame can be operated stably.

[0009]

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. 8 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. 9A, 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.

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 2 or wireless relay terminal 7, and an external unit. When the interrupt signal Vi returned from the interface terminal device 8 and the selector switch terminal device 9 as shown in FIG. 9B 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 controller 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.

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, the remote control relay used in the control terminal 3 will be described. 10 shows an exploded perspective view of the control terminal device 3, and FIG. 11 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. 11, the transmission module
The output side of each of the four sets of rule 59 is set winding S and reset respectively.
Remote control which is a two winding latching relay with winding R
Relay Ry₁~ Ry_FourIs connected. Each relay Ry₁
~ Ry_FourIs the main contact R₁~ R _FourAnd auxiliary contact r₁~ R_FourTo
Has and main contact point R₁... Auxiliary contact with load connected between
r₁The contact output of ... Is the signal processing of the transmission module 59.
It is input to the circuit and sent back to the central controller as a monitoring signal.
It is supposed to be done.

Normally, arbitrary relays Ry ₁ ... Are driven on the basis of control data transmitted from the central control unit to control ON / OFF of loads 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 via the signal line 4 is inputted 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. 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, 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 which constitutes the address setting unit 58
Writing data to the PROM is performed by the transmission module 59.
Signal processing circuit. Figure 1
As shown in FIG. 0, the terminal case 60 is formed in a module size of two distribution board contract dimensions, and the terminal case 60 is composed of a body 60a and a cover 60b, and the body 60a and the cover 60b are different from each other. It is 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 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.

At one end of the cover 60b are provided four sets of connection terminals 74 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. 11, terminals T ₁ ...
T ₈ corresponds to the connection terminal 74, and the signal terminal 77 corresponds to the terminal T.
₉ and T ₁₀ correspond to each other. On the other hand, the terminal device case 60
The body 60a is provided with a mounting groove 66 into 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
... correspond to the main contact block B, and the auxiliary contacts r ₁ ... correspond to the auxiliary contact block C.

FIG. 2 is an exploded perspective view of the whole, FIG. 3 is a perspective view, and FIG. 4 is a plan view. A coil block A is arranged in the center of the upper surface of a base 11 made of an insulating material, a main contact block B is arranged outside the partition wall 12 that is integrally projected from the base 11, and an auxiliary contact is provided on the other insulating wall 12a. A block C is provided. Conductive terminal board 1
The base of the conductive leaf spring 14 is fixed to the upper end of 3,
The terminal plate 13 is inserted into a hole 11 a formed in the base 11 and arranged on the base 11. Leaf spring 14
The movable contact 15 is fixed to one surface of the tip of the and the conductor plate 16 is fixed to the other surface. Then, these movable contacts 15,
The leaf spring 14 and the conductor plate 16 are 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 central portion. ing.

The auxiliary contact block C arranged on the opposite side of the main contact block B is constructed as follows. That is, the base portion of the leaf spring 25 having the fixed contact 23 fixed to the upper end of the auxiliary terminal plate 22 and the movable contact 26 facing the movable contact 26 fixed to the tip is inserted into the hole 11c of the insulating wall 12a. The auxiliary terminal plate 22 is also inserted and arranged in the hole of the insulating wall 12a.

Next, the coil block A arranged between the partition wall 12 at the center of the upper surface of the base 11 between the main contact block B and the auxiliary contact block C and the insulating wall 12a 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. The substantially T-shaped iron core 29 is inserted through the inside of the coil frame 31, and the projection 29a at the tip is fitted into the hole 27a of the yoke 27 and fixed by caulking or the like.
9 is fixed to the yoke 27.

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. The lower portions of the coil terminals 34 are inserted into the holes 11 _{1 of the} base 11, respectively. A protrusion 33a is formed on the upper surface of the flange 33 of the coil frame 31, and a recess 48 in which the rotary shaft 35 is provided is formed on the protrusion 33a.

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. A boss 49 is formed at one end of the movable frame 36 made of an insulator, and a shaft hole 40 is formed in the boss 49. The rotary shaft 35 of the coil frame 31 is inserted through the shaft hole 40 and is axially supported, and the movable frame 36 is rotatable. On the lower surface of the other end of the movable frame 36, two armatures 37 sandwiching a permanent magnet 38 are arranged, and an arm portion 41 for driving the leaf spring 14 is formed from one side portion of the movable frame 36.

The arm portion 41 constituting the card is formed with a slit 44 having an opening on the lower surface, and the leaf spring 14 is arranged in this slit 44. The slit 44 has an opening on the lower surface and lateral sides, so that the leaf spring 14 can be easily arranged in the slit 44. Further, a protrusion 45 is integrally provided on the side opposite to the arm 41, and the protrusion 45
The leaf spring 25 of the auxiliary contact block C is arranged in the slit formed on the lower surface of the leaf spring 25 to drive the leaf spring 25.

Next, the gist of the present invention will be described. Figure 1
As shown in FIG. 3, a protrusion 52 is provided on the upper surface of the collar portion 33 on both sides of the rotary shaft 35, and the movable frame 3 is protruded by the protrusion 52.
I receive 6 and support it. Therefore, the movable frame 36 is positioned in the horizontal direction without tilting by the two-point support of the two protrusions 52 provided on the coil frame 31, and the contact area between the movable frame 36 and the coil frame 31 is reduced to reduce the frictional force. The movable frame 36 can be operated stably.

A box-like cover 46 made of an insulating material having a lower surface 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, Is the main contact block B as shown in FIG.
The leaf spring 14 is housed in the slit 44 of the movable frame 36, and the leaf spring 25 of the auxiliary contact block C is housed in the slit of the protrusion 45. 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 magnetic pole surface 30 of the iron core 29 is alternately formed on the inner surface of the armature 37 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 remote control relay is a latching relay, and the coil 32 has two windings. The coil 32 is connected to the coil terminal 34 as described above, but as shown in FIGS.
4 has one common terminal 34c, and the other has a set terminal 34a for turning on the main contact and a reset terminal 34b for turning off the main contact.
Is. Now, FIG. 4 shows a non-excited state, in which one armature 37a is attracted to the magnetic pole surface 30 of 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, and both of the main contact block B are attracted. The contacts 15 and 20 are in the open state.

Further, since the movable frame 36 is biased in the counterclockwise direction, the leaf spring 25 of the auxiliary contact block C is elastically contacted with the slits of the protrusion 45 of the movable frame 36 so that the contact points 23,
26 is in an open state. Then, the set terminal 34a
When a voltage is applied to the common terminal 34c and the coil 32, the coil 32 is excited, and the armature 37b on one side causes the pole face 3 of the iron core 29 to move.
0 and the other armature 37a are attracted to the magnetic pole pieces 28, respectively, and the movable frame 36 rotates clockwise about the rotary shaft 35 to be in the ON state.

That is, by rotating the movable frame 36 in the clockwise direction, the leaf spring 14 of the main contact block B is urged by the arm portion 41 to close both the contacts 15 and 20, and the protruding portion The leaf spring 25 is driven by the slit of 45, and both contacts 23, 26
Closes. When a voltage is applied to the reset terminal 34b and the common terminal 34c in this ON state, the state shown in FIG. 4 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. The melting of the arm portion 41, which is the spring driving portion of the frame 36, is also prevented.

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 same spring load as 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.

FIGS. 5 to 7 show an embodiment in which two sets of main contact blocks B are provided to form a so-called double cut type.
That is, the partition walls 12 are formed on both sides of the base 11,
Main contact blocks B having the same structure as the previous embodiment are arranged outside the partition walls 12, and auxiliary contact blocks C are arranged outside one main contact block B. Further, in this embodiment, the leaf spring 2 of the auxiliary contact block C is used.
5 is fixedly arranged on the upper portion of the auxiliary terminal plate 24 fixed to the base 11.

Since the main contact blocks B are arranged on both sides, the arm portions 41 and 50 are formed on both sides of the movable frame 36 in this embodiment, and the protrusions formed on both arm portions 41 and 50, respectively. The leaf springs 14 of both main contact blocks B are arranged in the slit 44 between the portions 42 and 43. Furthermore, the protrusion 5 for urging the leaf spring 25 of the auxiliary contact block C is provided at the tip of the arm 50.
1 is projected.

[0044]

As described above, according to the present invention, an iron core inserted into a coil frame around which a coil is wound, a yoke forming a magnetic circuit with the iron core, a magnetic pole surface of the iron core facing each other, and a magnetic pole of the yoke. It is equipped with an armature that is located between the two and is driven by suction, and a movable frame that is fixed to the armature and that is pivotally supported by a rotating shaft that projects from the flange of the coil frame. In the relay that is configured to open and close, the protrusions that support the movable frame on both sides of the rotating shaft are provided on the flange portion of the coil frame, so that the movable frame is horizontally supported by the two-point support by the protrusions on both sides of the rotating shaft. The positioning is performed without tilting, the contact area between the movable frame and the coil frame is reduced, the frictional force is reduced, and the movable frame can be stably operated.

[Brief description of drawings]

1A and 1B are a perspective view and a cross-sectional view of a main part of an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the entire relay described above.

FIG. 3 is a perspective view of the entire relay.

FIG. 4 is a plan view of a relay.

FIG. 5 is an exploded perspective view of another embodiment.

FIG. 6 is a perspective view of the entire relay.

FIG. 7 is a plan view of a relay.

FIG. 8 is a schematic system diagram of a remote control system using the present relay.

9 is an operation explanatory diagram of FIG. 8;

FIG. 10 is an exploded perspective view of a control terminal.

FIG. 11 is a block circuit diagram of a control terminal device.

FIG. 12 is an exploded perspective view of a conventional relay.

FIG. 13 is a cross-sectional view of a main part of a conventional example.

FIG. 14 is a cross-sectional view of another conventional example.

[Explanation of symbols]

 27 yoke 28 magnetic pole piece 29 iron core 30 magnetic pole surface 31 coil frame 32 coil 33 collar 35 rotary shaft 36 movable frame 37 armature 40 shaft hole 52 protrusion

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[Procedure amendment]

[Submission date] October 14, 1991

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0036

[Correction method] Change

[Correction content]

Then, the inner surface of the armature 37 is alternated with the magnetic pole surface 30 of the iron core 29 by the excitation and reverse excitation of 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 remote control relay is a latching relay, and the coil 32 has two windings. The coil 32 is connected to the coil terminal 34 as described above, but as shown in FIGS.
4 has one common terminal 34c, and the other has a set terminal 34a for turning on the main contact and a reset terminal 34b for turning off the main contact.
Is. Now, FIG. 4 shows a non-excited state, in which one armature 37a is attracted to the magnetic pole surface 30 of 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, and both of the main contact block B are attracted. The contacts 15 and 20 are in the open state.

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 5

[Correction method] Change

[Correction content]

[Figure 5]

Claims (1)

[Claims] 1. An iron core that is inserted and arranged in a coil frame around which a coil is wound, a yoke that forms a magnetic circuit with the iron core, and a magnetic pole surface of the iron core and a magnetic pole piece of the yoke that face each other. With the amateur driven by suction and fixing the amateur,
A relay having a movable frame pivotally supported by a rotary shaft protrudingly provided on a flange portion of a coil frame, and having a contact opened / closed by rotation of the movable frame, a projection for supporting the movable frame on both sides of the rotary shaft. A relay characterized by being provided on the collar portion of the coil frame.