JPH02114422A - Remote control relay - Google Patents

Abstract

PURPOSE:To enhance the endurance for eventual shortcircuiting current or any other overcurrent by allowing such current to flow divergently to a contact spring and a flexible conductor. CONSTITUTION:A flexible conductor 13 is furnished in parallel with a contact spring 14 of a main contact block B, and current is allowed to flow divergently to the contact spring 14 and flexible conductor 13 in case a large current flows such as shortcircuiting current or any other overcurrent. This prevents the contact spring 14 from blowing off and precludes a movable block D for driving the contact spring 14 from fusion. This enables forming of a relay with large endurance against shortcircuiting without changing the operating characteristics of the relay.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application 1] The present invention relates to a remote control relay.

[Conventional technology] In recent years, various systems have been developed with the aim of saving energy and manpower to monitor and control loads, but the relays used in these systems are not only capable of controlling loads, but also of monitoring loads.
1 ability is also required.

In addition, in recent years, various systems have been developed to monitor and control loads in buildings and factories.
installed inside the system.

[Problem to be solved by the invention 1] Conventionally, in the former case, the control relay was used for load control,
Relays have been developed separately for signal control, and there are very few relays that have contact devices for both load control and signal control.

In the latter case, it is necessary to consider coordination with molded circuit breakers in the wiring system. In other words, when an overcurrent occurs, conventional small relays do not have the ability to withstand it.
I had to replace the terminal itself.

The present invention has been provided in view of the above points, and is a remote control relay that has both a load control contact and a signal control contact, that is, an auxiliary contact, and has a large amount of short circuit current and overcurrent. The purpose is to provide the following.

[Means for Solving the Problems 1] The present invention has an iron core around which a coil is wound, and magnetic pole pieces that face parallel to each other on both sides of a magnetic pole face formed on one end of the iron core,
A movable structure in which a yoke magnetically coupled to the iron core at the other end of the iron core and two armatures with a permanent magnet sandwiched between them are respectively placed in a pair of gaps formed between the iron core and the magnetic pole piece of the yoke. a movable block, a main contact block placed on one side of the coil for opening and closing a relatively large capacity current, and an auxiliary contact block placed on the opposite side of the coil for R-closing the signal current and interlocking with the main contact block. and a flexible conductor that is provided in parallel with the contact spring of the main contact block and shunts a current to the contact spring, so that both contact blocks are driven in accordance with the operation of the movable block. It is something.

[Operation 1] Therefore, the present invention has a main contact block that opens and closes a current with a relatively large capacity, and an auxiliary contact block that is placed on the opposite side of the coil and opens and closes a signal current, and that operates in conjunction with the main contact block. A load control contact and an auxiliary contact are provided, and a main contact, an α block, and an auxiliary contact block are provided on both sides of the coil to ensure insulation between the two, and the main contact The block and the auxiliary contact block are linked so that the state of the main contact block can be detected on the auxiliary contact block side. Furthermore, when a large current such as a short-circuit current or an overcurrent flows, the current is divided between the contact spring and the flexible conductor.

[Embodiment J] Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, before explaining the remote control relay itself, a schematic configuration of a remote monitoring and control device that uses this remote control relay and performs monitoring and control by time division multiplex transmission will be explained. In FIGS. 5 and 6, a central control unit ffl, a plurality of monitoring terminals 2 each having a unique address set therein and monitoring operation switches S Its 2, and loads L2, . . . A control terminal 3 to control, a wireless relay terminal 7,
An external interface terminal 8 and a pattern setting terminal 9 are connected by a pair of signal lines 4. The transmission signal Vs sent from the central control device 1 to the signal line 4 is
As shown in Figure (a), a start pulse signal ST indicates the start of signal transmission, and a mode data signal MD indicates the signal mode.
, an address data signal AD for transmitting 8-bit address data for calling terminals 2.3.7 to 9, a load, .
A bipolar (±24V) consisting of a control data signal CD1 for transmitting 111m data controlling L2..., a checksum data signal C8, and a return standby signal WT for setting the return period of the terminals 2.3.7 to 9. ) is a time-division multiplexed signal in which data is transmitted using pulse width modulation.

In each terminal device 2, 3, 7 to 9, when the 7 address data of the transmission signal Vs received via the signal line 4 matches its own unique address data, it takes in the control data of the transmission signal Vs, and also takes in the control data of the transmission signal Vs. , transmission A, the monitoring data signal is sent back as a current mode signal (a signal sent by short-circuiting signal #i4 through an appropriate low impedance) in synchronization with the return standby signal WT of tJifvs. There is. The central control device 1 also includes gummy signal transmitting means for constantly sending out a gummy transmission signal in which the mode data signal MD is in gummy mode, one of the monitoring terminals 2 or wireless relay terminals 7, and an external interface. No. 6 returned from the terminal device 8 and the pattern setting terminal device 9
When an interrupt signal Vi as shown in Figure (b) is received, an interrupt is generated that detects the terminals 2, 7 to 9 where the entrapment has occurred, accesses the terminals 2, 7 to 9, and returns the monitoring data. processing means are provided.

In addition, in the central control device fffl, the monitoring data sent back to the central control device 1 from the monitoring terminal device 2 or the wireless relay terminal device 7, the external interface terminal device 8, and the pattern setting terminal device 9 as described above. Based on this, control data to be transmitted to the control terminal device 3 that controls the corresponding load L I t L 2 . Loads , L, . . . are controlled by dividing and multiplexing the transmission.

The wireless relay terminal 7 includes an optical wireless transmitter X1, an optical wireless receiver Y, and a wireless signal #i 4 a
This is a terminal device that relays data in an optical wireless system consisting of: an optical wireless receiver Y receives an optical signal transmitted from an optical wireless transmitter X, and transmits the received data via a wireless signal @4a At the same time, this data is sent to the central control 1fCf? It is designed to be transferred to ff1l.

In addition, the external interface 7ice terminal 8 is connected to the external control 'A
The pattern setting terminal device 9 is a terminal device that performs data transmission in the dark with the We 8 a, and the pattern setting terminal device 9 is a terminal device that transfers pattern control data inputted from the data manual section 9a to the central control device 1. In addition, the distribution board 6 or relay control board 6
The monitoring terminal device 2 and the control terminal device 3 installed in a are of the dimensions agreed upon by the distribution board, and their control outputs control a remote control relay for load control, which will be described later. There is.

Next, a remote control relay, which is the gist of the present invention, will be explained. FIG. 1 shows an exploded perspective view of the whole, and FIG. 2 shows a perspective view. A coil block 8 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 on the outside of a partition wall 12 that projects integrally from the base 11, and an auxiliary contact block C is arranged on the other side. be done. The base of a conductive leaf spring 14 is fixed to the upper end of the conductive terminal plate 13, and the terminal plate 13 has a hole 21 drilled in the base 11.
aj: It is designed to be inserted and placed on the base 11. A movable contact 15 is fixed to one surface of the tip of a leaf spring 14, which is a contact spring, and a conductor plate 16 is fixed to the other surface.

These movable contacts 15, leaf springs 14, and conductor plates 1
6 is fixed in three layers. That is, the leaf spring 14 and the conductive 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 conductive plate 16.

A flexible lead wire [18] is spot-welded and connected between the lower part of the conductor plate 16 and the center portion of the terminal plate 13 in parallel with the leaf spring 14.

Conductive terminal plate 19 arranged in hole 11b of base 11
After fixing, α20 is fixed to the upper end portion facing the movable contact 15, and a substantially U-shaped iron piece 21 is provided in the medium heat portion. This main contact block B is designed to open and close a relatively large current.

The auxiliary contact block C disposed on the opposite side of the main contact block B and 1 is configured as follows.

That is, a fixed contact 23 is fixed to the upper end of the auxiliary terminal plate 22 inserted through the hole lie of the base 11, and a movable contact 26 facing the fixed contact 23 is fixed to the tip of the base of the leaf spring 25. is fixed to the upper end of the auxiliary terminal plate 24. Then, the auxiliary terminal board 24 is connected to the hole 1 of the base 11.
1d. This auxiliary contact block C is used to open and close the signal current.

Next, the coil block A is placed in the center of the upper surface of the dark base 11 between the main contact block B and the auxiliary rear block C.
I will explain about it. A square hole 27a is bored in one piece of the yoke 27 bent into an L shape, and magnetic pole pieces 28 are erected from both ends of the other piece, facing each other. A substantially T-shaped iron core 29 is inserted through the inside of the coil frame 31 to form a protrusion 29 at the tip.
a is fixed to the hole 27a of the yoke 27 by caulking or the like, and the iron core 29 is magnetically coupled and fixed to the yoke 27.

The ends of the iron core 29 protrude from the coil frame 31, and both sides thereof serve as magnetic pole faces 30. A coil 32 is wound around the outer circumferential surface of the coil frame 31, and three coil terminals 34 connected to the ends of the fill 32 are embedded in one thickened flange 33 of the coil frame 31. A protrusion 33 is placed on the upper surface of the crocodile part 33.
A is formed in the protrusion 33a, and a circular shaft hole 35 is formed in the upper surface of the protrusion 33a. The main contact block B and the auxiliary contact block C are arranged on both sides of the coil block A, thereby making it easy to ensure insulation between the blocks B and C.

The movable block D arranged above the coil block A includes a movable frame 36, two armatures 37 and a permanent magnet 38.
It is composed of etc. A rotating shaft 40 is vertically installed at one end of the movable frame 36 made of an insulator, and this rotating shaft 40 is supported in the shaft hole 35 of the coil frame 31, allowing the movable frame 36 to rotate. ing. A third
As shown in the figure, two armatures 37 sandwiching a permanent magnet 38 are arranged and fixed, and an arm 41 for driving the leaf spring 14 is formed from one side of the movable frame 36.

As shown in FIGS. 1 and 3, this arm portion 41 constituting the card has protrusions 42 and 43 formed diagonally with gaps between them, and a plate is inserted into the slit 44 between the surface protrusions 42 and 43. Spring 1
4 are installed.

This slit 44 is open at the bottom and sides, so that the leaf spring 14 can be easily placed in the slit 44. Further, a protrusion 45 is integrally provided on the opposite side of the arm portion 41, and the plate spring 25 of the auxiliary contact block C is driven by this protrusion 45.

The base 11 on which the above-mentioned members are arranged is covered with a box-shaped cover 46 made of an insulating material with an opening on the bottom surface, and when the movable block D is arranged on the coil block A, the As shown in Figure 3, the leaf spring 1 of the main contact block B
4 is housed in the slit 44 of the movable frame 36, and the protrusion 45 is positioned inside the leaf spring 25 of the auxiliary contact block C. Further, both 77 and 737 are positioned between a pair of gaps formed between the magnetic pole face 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 polarized electromagnet block. Then, the inner surface of the armature 37 is alternately attracted to the magnetic pole surface 30 of the iron core 29 and the magnetic pole piece 28 of the yoke 27 by the excitation of the coil 32 and the non-Pih magnetism, and the movable frame 36 is rotated. It is designed to drive the auxiliary contact pro-nk C.

By the way, the coil 32 has two windings and is connected to the fill terminal 34 as described above, but the coil terminal 34 has one winding.
The main terminal is a common terminal 34a, and the others are a set terminal 34b that turns on the main contact and a reset terminal 34e''t' that turns off the main contact.
bru. Now, FIG. 3 shows a non-excited state, with one armature 37a attached to the iron core 29 and the other armature 37a attached to the iron core 29. b are attracted to the magnetic pole piece 28 by the magnetic flux of the permanent magnet 38, and both terminals 15 and 20 of the main contact block B are in an open state.

Furthermore, since the movable frame 36 is biased counterclockwise,
After the protrusion 45 of the movable frame 36 assists, it comes into elastic contact with the plate spring 25 of the α block C to open both terminals 23*26. When a voltage is applied to the set terminal 34b and the common terminal 34a, the coil 32 is excited, and one armature 37b is attracted to the magnetic pole face 30 of the iron core 29, and the other armature 37a is attracted to the magnetic pole piece 28. Movable frame 3
6 rotates clockwise about the rotation shaft 40, and enters the on state as shown in Fig. m4. In other words, as the movable frame 36 rotates clockwise, the main contact block B
The leaf spring 14 is biased to close both terminals 15.20, and the protrusion 845 is separated from the leaf spring 25 and returned by the restoring force of the leaf spring 25 itself, thereby closing both terminals 23.26. C closes. If a voltage is applied to the reset terminal 34e and the common terminal 34a in the state shown in FIG. 4, the state shown in FIG. 3 will be restored. In this way, with the movable block D,
Since the main contact block B and the auxiliary contact block C are driven in conjunction with each other, the state of the main contact block B can be detected from the output of the auxiliary contact block C.

Here, braided conductor #i18 is connected to the main contact block B of the main contact in parallel with the leaf spring 14, so when a large current such as a short circuit current flows, the current flows between the leaf spring 14 and the main contact block B. By dividing the flow into the braided conductor #+118, it is possible to prevent the leaf spring 14 from fusing and to reduce the heat generation of the leaf spring 14, thereby preventing the arm RIBS 41, which is the spring driving portion of the movable frame 36, from melting. In addition, if 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 IN of the leaf spring 14, the leaf panel 14
It is possible to increase the cross-sectional area of the zero body, but in this case, the spring load increases, making it difficult to match it with the attractive force of the electromagnet of the movable block D.

However, in this embodiment, since only the leaf spring 14 having a small cross-sectional area is pushed, the spring load can be the same as that of a conventional relay. Further, in this embodiment, the conductor plate 16
Although the braided conductor 18 is attached to the movable contact 15, the braided conductor 18 may be directly connected to the back surface of the movable contact 15 or the like.

In addition, in the embodiment of the present invention, the main contact side is 7 lexiers,
Although the auxiliary contact side is of the 97 to 7 type, it is not particularly limited to this.

In addition, in order to improve the reliability of the auxiliary contact drive, contact 2
3.26 has gold plating etc.

[Effect of the Invention 1 As described above, the present invention has an iron core around which a coil is wound, and magnetic pole pieces that face parallel to each other on both sides of a magnetic pole face formed on one end of the iron core, A movable movable block in which a yoke magnetically coupled to an iron core and two armatures each having a permanent magnet sandwiched therebetween are arranged in a pair of gaps formed in the darkness between the iron core and the magnetic pole piece of the yoke; The main contact block is arranged on one side of the coil and opens and closes a relatively large capacity current, and the auxiliary contact block is arranged on the opposite side of the coil and opens and closes a signal current, and is interlocked with the main contact block. Since both contact blocks are driven according to the operation of the block, there is a main contact block which opens and closes a relatively large capacity current, and a main contact block which is placed on the opposite side of the coil and which opens and closes a signal current. It has an auxiliary contact block interlocked with the block, and a load control contact and an auxiliary contact can be provided, and the main contact drive,
The auxiliary contact drive can be easily performed, and by providing the main contact block and the auxiliary contact block on both sides of the fill, it is easy to ensure insulation between the two, and the main contact block and the auxiliary contact block By linking these, the state of the main contact block can be detected on the auxiliary contact block side. Therefore, the main contact block can control the load, and the auxiliary contact block has the FI function of sending a signal for load monitoring, making it possible to realize a remote control relay compatible with the system. Furthermore, by providing a visible conductor that is installed in parallel with the contact springs of the main contact block to shunt current to the contact springs, it is possible to prevent large currents such as short-circuit currents or overcurrents from flowing. By dividing current between the contact spring and the flexible conductor, it is possible to prevent the contact spring from melting, and also to prevent the movable block that drives the contact spring from melting. Therefore, it is possible to prevent the melting of the movable block that drives the contact spring. This has the effect of realizing a small, light and short-circuited relay without changing the operating characteristics.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of the entire embodiment of the present invention, FIG. 2 is a perspective view of the same as the above, and FIG. 3 is a sectional view showing the same as the above in an OFF state.
FIG. 4 is a sectional view showing the on state of the same as above, FIG. 5 is a schematic configuration diagram of the remote monitoring and control device of the above, and FIG. 6 is an explanatory diagram of the operation of the above. 18 is a braided conductor, 27 is a yoke, 28 is a magnetic pole piece, 29 is an iron core, 30 is a magnetic pole face, 32 is a coil, 37 is an armature, 38 is a permanent magnet, B is a main contact block, C is an auxiliary contact block, and D is It is a movable block. Agent Patent Attorney Ishi 1) Ai Figure 7 2

Claims (1)

[Claims] (1) Between an iron core around which a coil is wound and a yoke that has magnetic pole pieces facing parallel to each other on both sides of a magnetic pole face formed on one end of the iron core and magnetically coupled to the iron core on the other end of the iron core. A movable block has two armatures sandwiching a permanent magnet in a pair of air gaps formed between the iron core and the magnetic pole pieces of the yoke, and a movable armature arm with a relatively large capacity is disposed on one side of the coil. A main contact block that opens and closes a large current, an auxiliary contact block that is placed on the opposite side of the coil and that opens and closes a signal current and works in conjunction with the main contact block, and a contact spring that is provided in parallel with the contact spring of the main contact block. and a flexible conductor for shunting current, the remote control relay having both contact blocks driven in response to the operation of the movable block.