JPH052967A - Relay - Google Patents

Abstract

PURPOSE:To facilitate unbalance spring load curve coordination of a main contact block and an aux. contact block, CONSTITUTION:A magnetic pole piece 28 is formed at one side of, the other end of a yoke 27, and confronting this mag. pole piece 28 a piece 28a is formed which is shorter than it. A pair of armatures 37 are furnished, one of which is positioned confronting the mag. pole piece 28 while the other 37 is arranged not confronting the shorter piece 28a. Thus the attraction force curve can easily be made out of balancing.

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 relay of this type is driven by an iron core around which a coil is wound, an armature attracted to a magnetic pole surface of the iron core, a yoke magnetically coupled to the iron core, and a rotation of the armature. It is composed of a main contact block and an auxiliary contact block.

[0003]

In such a conventional example, one end of the yoke and one end of the iron core are connected to each other, and the other end of the yoke is formed in a U shape so that each piece serves as a magnetic pole piece. Further, both sides of the other end of the iron core are used as pole faces to face the pole pieces of the yoke. Further, a pair of amateurs with a permanent magnet interposed between the magnetic pole piece and the magnetic pole surface are respectively located, and the armature is attracted to the magnetic pole piece and the magnetic pole surface to rotate the amateur, and the main contact block and the auxiliary contact point. The block is opened and closed.

However, conventionally, both magnetic pole pieces of the yoke are formed in a U-shape, and the magnetic pole pieces respectively face the armature. Therefore, when the main contact block and the auxiliary contact block are arranged on both sides of the armature, the main contact block is arranged on one side of the amateur, and the main contact block and the auxiliary contact block are arranged on the other side. If so, it is necessary to make the attraction force characteristics unbalanced according to the respective spring loads, but there was a problem that this spring load characteristics could not be easily matched.

The present invention has been made in view of the above points, and provides a relay for the purpose of facilitating matching of unbalanced spring load characteristics between a main contact block and an auxiliary contact block. Is.

[0006]

According to the present invention, one of a pair of magnetic pole pieces formed opposite to the other end of a yoke is a short piece shorter than the other, and the short piece and the armature are not opposed to each other.

[0007]

Thus, one of a pair of magnetic pole pieces formed opposite to the other end of the yoke is made into a short piece shorter than the other, and the short piece and the amateur are made not to face each other, and the attraction force characteristic is unbalanced, and the main contact point is formed. This makes it easy to match the unbalanced spring load characteristics of the block and auxiliary contact block.

[0008]

Embodiments of the present invention will now be described with reference to the drawings.
To do. First, before explaining the remote control relay itself, this
Mokon relay is used, and monitoring control is performed by time division multiplex transmission.
A schematic configuration of a remote monitoring control device for controlling will be described. Figure
10 is a remote monitoring system using the remote control relay according to the present invention.
The central control unit 1 shows the schematic configuration of the control system.
And a unique address is set and switch S₁~ S _FourMonitor
Multiple monitoring terminals 2, load L₁~ L_FourTo control
Control terminal 3, wireless relay terminal 7, external in
Interface terminal 8 and selector switch terminal 9
And are 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. 11A, 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
Also, it is a multi-pole (± 24V) time division multiplex signal composed of a return standby signal WT for setting a return period from the terminals 2, 3, 7 to 9, and data is transmitted by pulse width modulation. There is.

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 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. 11B 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. 12 shows an exploded perspective view of the control terminal 3, and FIG. 13 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. 13, 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 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 1
As shown in FIG. 2, the terminal device case 60 is formed in a module size of two distribution board contract dimensions, and the terminal device 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 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 shown in FIG. 13, 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. 1 is an exploded perspective view of the whole, FIG. 2 is a perspective view, and FIG. 3 is a plan view. A coil block A is arranged at 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 side opposite to 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 main contact block B and the auxiliary contact block C and the partition wall 12 at the center of the upper surface of the base 11 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 the pole piece 2 is formed from one edge of the other piece.
8 are set up. Here, as shown in FIGS. 1 and 4, a short piece 28a shorter than the magnetic pole piece 28 is formed in a portion facing the magnetic pole piece 28. As shown in FIG. 5, this short piece 28a is not opposed to an amateur 37 described later.
The magnetic pole piece 28 is arranged so as to face the other armature 37.

Further, the substantially T-shaped iron core 29 has a coil frame 31.
Through the inside, the projection 29a at the tip is fitted into the hole 27a of the yoke 27 and fixed by caulking, and the iron core 29 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. The coil 32 is wound around the outer peripheral surface of the coil frame 31.
One thick walled collar portion 33 is embedded with three coil terminals 34 connected to the ends of the coil 32. The lower portions of the coil terminals 34 are inserted into the holes 11 _{1 of the} base 11, respectively. The protrusion 33a is provided on the upper surface of the collar portion 33 of the coil frame 31.
Is formed, and the rotary shaft 35 is provided so as to protrude from 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 shaft hole 40 is formed at one end of a movable frame 36 made of an insulator, and the rotary shaft 3 of the coil frame 31 is inserted into the shaft hole 40.
5 is inserted and pivotally 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 a lower surface opening, 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.

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. In addition, the magnetic pole surface 30 of the iron core 29
And the armatures 37 are positioned between a pair of gaps formed between the pole piece 28 and the short piece 28a of the yoke 27. However, the short piece 28a and the amateur 37 are vertically offset and do not face each other. 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 alternated with the magnetic pole surface 30 of the iron core 29 by exciting and non-exciting the coil 32.
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 remote control relay is a latching relay, and the coil 32 has two windings. Although the coil 32 is connected to the coil terminal 34 as described above, as shown in FIGS.
4, one 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, FIG. 3 shows a non-excited state, and as shown in FIG. 5A, one armature 37b is in the magnetic pole surface 30 of the iron core 29, and the magnetic pole piece 28 of the other armature 37a is in the magnetic flux of the permanent magnet 38. Each of the terminals 15 and 20 of the main contact block B is attracted and is 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 by the slit of the protrusion 45 of the movable frame 36, and both terminals 23,
26 is in an open state. And the set terminal 34b
When a voltage is applied to the common terminal 34a and the coil 32, the coil 32 is excited and, as shown in FIG.
7a is attracted to the magnetic pole surface 30 of the iron core 29, and the other armature 37b is attracted to the short piece 28a side.
Turns clockwise about the turning shaft 40 and is turned on.

That is, when the movable frame 36 is rotated clockwise, the leaf spring 14 of the main contact block B is urged by the arm portion 41 to close both terminals 15 and 20, and the projecting portion The leaf spring 25 is driven by the slit of 45 so that both terminals 23, 26
Closes. In this ON state, if a voltage is applied to the reset terminal 34c and the common terminal 34a, the state shown in FIG. 3 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 a suction 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.

In the present invention, as described above, the yoke 2 is used.
6, the magnetic pole piece 28 and the short piece 28a are formed, and the short piece 28a and the armature 37 are arranged so as not to face each other.
As shown in, the suction force characteristics can be unbalanced. Therefore, it is possible to easily match the unbalanced spring loads of the main contact block B and the auxiliary contact block C as in this embodiment.

Particularly, when the spring load of the leaf spring 25 of the auxiliary contact block C is extremely small, the armature 37 on the auxiliary contact block C side and the magnetic pole surface of the yoke 27 are not opposed to each other, so that the leaf spring 25 is aligned with the same. It can be done easily. 7 to 9 have two sets of main contact blocks B,
This embodiment shows what is called a double-sided cutting type. That is, the partition walls 12 are formed on both sides of the base 11, the main contact blocks B having the same structure as the previous embodiment are arranged outside the partition walls 12, and one of the main contact blocks B is further arranged.
Auxiliary contact block C is arranged on the outer side of. Further, in this embodiment, the leaf spring 25 of the auxiliary contact block C is
It is fixedly arranged on the upper portion of the auxiliary terminal plate 24 fixed to the base 11.

In addition, the protrusion 33 of the flange 33 of the coil frame 31
A semi-circular recess 48 is formed in a.
A rotary shaft 35 is provided at the center of 8. In addition, the movable frame 3
A boss 49 that fits in the recess 48 is provided at one end of the shaft 6, and the shaft hole 4 into which the rotary shaft 35 is inserted is inserted into the boss 49.
0 is drilled. Since the main contact blocks B are arranged on both sides, the arm portions 41, 50 are formed on both sides of the movable frame 36 in the present embodiment, and between the protrusions 42, 43 formed on the both arm portions 41, 50, respectively. The leaf springs 14 of both the main contact blocks B are arranged in the slits 44. 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.

Incidentally, the pole piece 28 and the short piece 28a of the yoke 27.
The configuration of is the same as that of the previous embodiment. Also, the operation is the same as in the previous embodiment, and since the two main contact blocks B are only opened and closed at the same time, the description thereof will be omitted.

[0044]

As described above, according to the present invention, one of the pair of magnetic pole pieces formed opposite to the other end of the yoke is a short piece shorter than the other, and the short piece and the armature are not opposed to each other. , One of a pair of magnetic pole pieces formed opposite to the other end of the yoke is made into a short piece shorter than the other, the short piece and the amateur are made not to face each other, the attraction force characteristics are made unbalanced, and the main contact block and the auxiliary contact block This has the effect of facilitating matching of unbalanced spring load characteristics.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an entire relay according to an embodiment of the present invention.

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

FIG. 3 is a plan view of a relay.

FIG. 4 is an enlarged perspective view of a yoke.

5A is a diagram showing a non-excited state, and FIG. 5B is a diagram showing an excited state.

FIG. 6 is an operation characteristic diagram of a relay.

FIG. 7 is an exploded perspective view of another embodiment.

FIG. 8 is a perspective view of the entire relay.

FIG. 9 is a plan view of the relay.

FIG. 10 is a schematic system diagram of a remote control system using the present relay.

11 is an explanatory diagram of the operation of FIG.

FIG. 12 is an exploded perspective view of a control terminal device.

FIG. 13 is a block circuit diagram of a control terminal.

[Explanation of symbols]

 27 yoke 28 magnetic pole piece 28a short 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] 0034

[Correction method] Change

[Correction content]

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 remote control relay is a latching relay, and the coil 32 has two windings. Although the coil 32 is connected to the coil terminal 34 as described above, as shown in FIGS.
4, one 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, FIG. 3 shows a non-excited state, and as shown in FIG. 5A, one armature 37b is in the magnetic pole surface 30 of the iron core 29, and the magnetic pole piece 28 of the other armature 37a is in the magnetic flux of the permanent magnet 38. Both of the main contact block B are sucked respectively.
The contacts 15 and 20 are in the open state.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0035

[Correction method] Change

[Correction content]

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 by the slit of the protrusion 45 of the movable frame 36, so that both contacts 23,
26 is in an open state. And the set terminal 34b
When a voltage is applied to the common terminal 34a and the coil 32, the coil 32 is excited and, as shown in FIG.
7a is attracted to the magnetic pole surface 30 of the iron core 29, and the other armature 37b is attracted to the short piece 28a side.
Rotates clockwise about the rotary shaft 35, and is turned on.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0036

[Correction method] Change

[Correction content]

That is, by rotating the movable frame 36 in the clockwise direction, the arm spring 41 urges the leaf spring 14 of the main contact block B to close both the contacts 15 and 20, and the protruding portion. The leaf spring 25 is driven by the slit of 45 so that both contacts 23, 26
Closes. In this ON state, if a voltage is applied to the reset terminal 34c and the common terminal 34a, the state shown in FIG. 3 is restored.

[Procedure Amendment 5]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 7

[Correction method] Change

[Correction content]

[Figure 7]

[Procedure Amendment 6]

[Document name to be corrected] Drawing

[Correction target item name] Figure 8

[Correction method] Change

[Correction content]

[Figure 8]

Claims (1)

Claim: What is claimed is: 1. An armature, which is attracted to a magnetic pole surface of an iron core around which the coil is wound by exciting or non-exciting the coil, and a yoke to which one end of the iron core is connected, and the other end of the yoke. Amateurs are attracted to the pole pieces facing each other and the magnetic pole surface of the iron core,
In the relay that opens and closes the contacts of the main contact block and the auxiliary contact block, one of the pair of magnetic pole pieces formed facing the other end of the yoke is a short piece shorter than the other, and the short piece and the armature are not opposed to each other. Characterized relay.