JPS6036051B2 - Transfer type electromagnetic relay - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electromagnetic appliance in which a contact component is enclosed in a sealed container, and more particularly to an electromagnetic relay that performs transfer operation.

Conventionally, as this type of electromagnetic relay, Japanese Patent Application Laid-Open No. 50-8585
2 has the configuration described.

Here, this electromagnetic relay will be explained with reference to the drawings. The electromagnetic appliance shown in Figure 1 consists of three parallel terminal legs 1
02, 104, 105, and the upper part of the terminal leg 102 in the center of these terminal legs, and when tilted to the left or right using this contact part as a fulcrum, the upper part of the left terminal leg 104 or the right terminal leg A technical pole element 101 is provided on the upper part of the terminal element 105, and one of the terminal legs has a coil 103 as an iron core provided on the outer periphery.
One terminal leg or the above-mentioned pole piece of the other outer terminals is made of a permanent magnet, or the terminal leg is made of a magnetic material that is magnetized by a permanent magnet placed close to it;
A unit that changes the direction of movement of the armature 101 by creating a difference in magnetic attraction force between each end of the armature 101 and the opposite terminal chest depending on the direction of the current in the coil 103 or the presence or absence of the current. A plurality of relays are enclosed in an enclosure 113 such that the lower part of each terminal leg of the relay protrudes airtightly outside the enclosure 113, and the coil 103 is disposed outside the enclosure 113. It is. However, such a configuration causes wear on the contact portion with the center terminal leg 102 due to the impulse of the winding pole 101, and the contact 106, which is the fulcrum of the impulse of the winding pole 101 and through which electrical signals pass, , 107 causes the contact resistance to fluctuate, so use at a high number of operations cannot be guaranteed.

In order to solve the problems in the above-described configuration, an electromagnetic relay using a movable contact spring as shown in FIG. 3 has also been proposed.

The configuration of this electromagnetic relay is shown in FIG. As shown in FIGS. 2 and 3, the movable contact spring 117 has contact members 108, 110 fixed to both ends thereof, and has a twill pole holding portion 118 bent in a U-shape in the center. Furthermore, a cut groove 119 is provided on the upper side of the pole holding portion 118.

The movable contact spring 117 is in contact with the upper end of the central terminal leg 102, which is an iron core, at its center. In addition, the U-shaped reinforcement element holding portion 118 of the movable contact spring 117 inserts the central part of the reinforcement element 101 made of a permanent magnet, and the cut groove 11
V formed in the center of the armature 101 by bending it on both sides of the armature 9.
It is held by engaging with the shaped groove. In FIG. 2, the same members as those shown in FIG. 1 are indicated using the same reference numerals. Further, reference numerals 109 and 111 are contact members;
114 is a metal substrate, 115 is glass as an insulator, and 16 is a metal lid. An electromagnetic relay using a movable contact spring as shown in Fig. 2 is effective for use with a high number of operations, but on the other hand, the magnetic force of the permanent magnet and coil that moves the pole against the stiffness of the movable contact spring. Requires driving power.

Furthermore, in the electromagnetic relays configured as shown in Figures 1 and 2, an iron core is used as part of the magnetic flux path to maintain the contact state due to the movement of the brushed pole. When reversing the dynamic state, it is necessary to generate a reverse magnetic flux that cancels the magnetic flux from the permanent magnet passing through the iron core.

This results in an increase in the driving power to be supplied to the coil, and a decrease in operating sensitivity. The purpose of the present invention is to
A diaphragm spring made of sensitive magnetic material is used to support the support pole element, and two of the three outer terminal legs are made of L-shaped sensitive magnetic material. By arranging a permanent magnet at the top of the horizontal plate, the central terminal chest, which serves as the iron core, is prevented from forming part of the magnetic circuit for maintaining the contact state, making it possible to achieve high sensitivity and use with a high number of operations. Our objective is to provide effective transfer-type electromagnetic appliances.

Another object of the present invention is to provide a transfer type electromagnetic relay having an arbitrary number of contacts by combining a plurality of unit contact switching elements including a contact component and an iron core enclosed in a closed container. be.

The transfer-type electromagnetic appliance according to the present invention has a first core having an iron core and having an excitation winding wound around the outer periphery and penetrating through a resin cliff body.
a terminal leg, L-shaped second and third terminal legs integrally formed with the pupil body on both sides of the first terminal leg, and a diaphragm spring connected to the upper end of the chest of the first terminal. a square pole having movable contact portions at both ends thereof that selectively contact fixed contact members formed on the horizontal plate portions of the second and third terminal legs that are fixed to each other and pass through the weight body; a permanent magnet disposed on at least one of the horizontal slopes of the second and third terminal legs; and an enclosure joined to the cliff body to airtightly house the self-supporting pole element and the permanent magnet. and a lid body constituting the excitation winding, and depending on the direction of the magnetic flux generated by the excitation winding or the presence or absence of this magnetic flux, a difference in magnetic attractive force between the opposing terminal legs in each weaving part of the enforcing pole element is generated, and the enforcing pole element is The present invention is characterized in that it includes at least one unit contact switching element that switches contacts by changing the direction of pivoting.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 4 is a sectional structural view showing a first embodiment of the electromagnetic relay according to the present invention, which constitutes a self-holding type electromagnetic relay having one transfer contact set.

Referring to FIG. 4, a flat plate-shaped support pole element 2 made of a magnetic material is attached to the upper end of an iron core (center terminal leg) 201 made of a European magnetic material.
02 is attached via a diaphragm spring 203.

This pole pole 202 pivots from side to side using the upper end of the iron core 201 as a fulcrum. On both sides of the iron core 201, L-shaped flat signal terminals 204a and 204b, which also serve as part of the yoke, are arranged. Signal terminals 204a, 204 made of European magnetic material
b allows electrical signals and magnetic flux to pass through, and the bush pole element 20
Fixed contacts 205a and 205b that come into contact with and separate from the support pole element 202 are provided at the upper end portions facing the support pole element 202, respectively. Furthermore, permanent magnets 206a and 206b having magnetic poles in opposite directions are fixed to the signal terminals 204a and 204b, respectively. Movable contacts 207a, 207b are fixed to both ends of the bush pole 202, which are spaced apart from the fixed contacts 205a, 205b. Iron core 201 and signal terminals 204a, 20
4b is integrally formed with a cliff body 208 made of synthetic resin. Furthermore, an excitation winding 210 wound around a winding frame 209 is arranged around the iron core 201 . Further, the contact forming members (the bush pole 202, fixed contacts 205a and 205b, etc.) arranged on the upper part of the cliff body 208 are sealed with a lid body 211 made of synthetic resin. Note that the reference numeral 212 is a winding terminal, which is molded on the winding frame 209. moreover,
Reference numeral 213 is a yoke attached to the winding frame 209. Next, the operation of the electromagnetic relay configured as described above will be explained. When the twill pole 202 is in contact with the fixed contact 205a and this state is magnetically maintained by the permanent magnet 206a,
Electric signals can pass through the iron core 201 and the signal terminal 204a as a signal path. On the other hand, the path on the signal terminal 204b side is in an open state. Now, when a current is supplied to the excitation winding 2101 to generate a magnetic flux J passing through the iron core 201, both ends of the bush pole element 202 are magnetized into "S" poles. As a result, the bush pole element 202 receives the repulsive force from the signal terminal 204a and the attractive force from the signal terminal 204b, and the fixed contact 205
Switch to side b. Then, the iron core 201 and the signal terminal 204
The path between a is open, and the iron core 201 and the signal terminal 204
Electrical signals can pass through to the path side where b serves as a signal terminal. This state is magnetically maintained by the permanent magnet 206b even if the current to the excitation winding 210 is stopped. In addition, when a current in the opposite direction is supplied to the excitation winding 210', magnetic flux in the opposite direction passes through the iron core 201, so the shunt pole element 202
performs a switching operation and comes into contact with the fixed contact 205a. Similarly, this state is maintained by permanent magnet 206a. As described above, the first embodiment of the present invention realizes a transfer type Kasumi-Shige relay having a self-holding function. FIG. 5 is a cross-sectional structural view showing a second embodiment of the electromagnetic relay according to the present invention, which is a current holding type, whereas the structure described in the first embodiment is a self-holding type.

In FIG. 5, the same components as those in the first embodiment shown in FIG. 4 are designated by the same reference numerals. That is, a permanent magnet 206a is arranged above a signal terminal 204a made of a soft magnetic material, but a permanent magnet is not arranged on the signal terminal 204b side. The electromagnetic relay according to this embodiment operates as follows.

As shown in FIG.
05a, and this state is magnetically maintained by a permanent magnet 206a. At this time, iron core 201 and signal terminal 20
Electric signals can pass through using 4a as a signal terminal. Now, the current is supplied to the excitation winding 210', and the magnetic flux passing through the iron core 201 is 3
When this occurs, both ends of the bush pole element 202 are magnetized into "S" poles.

As a result, the winding pole 202 moves to the fixed contact 20 by the total force from the signal terminal 204a and the magnetizing force of the winding pole 202 itself.
Switch to the 5b side. Due to this switching operation, iron iD201
The path between the terminal 201 and the signal terminal 204a is open, and an electric signal can pass through to the path between the iron terminal D201 and the signal terminal 204b.
This state can be maintained by maintaining the current supply to the excitation winding 210. Further, when the current to the excitation winding 210 is stopped, the bush pole element 202 contacts the fixed contact 205a due to the attractive force from the signal terminal 204a. This state is maintained by a permanent magnet 206. Next, with reference to FIG. 6, the joining shapes of the auxiliary pole element, diaphragm spring, and iron core in the electromagnetic relays having the configurations described in the first and second embodiments will be described.

For example, a diaphragm spring 203 having a spiral movable portion as shown in FIG. 6 is placed on the flat rear pole element 202 and welded at point a. The supporting pole element 202 and the diaphragm spring 203 in this state are combined into a cliff body 20 made of synthetic resin.
It is welded to the upper end of the iron core 201 fixed to the iron core 8. Thereby, the twill pole element 202 is configured to be able to tilt left and right using the iron core 201 as a fulcrum. Especially the diaphragm spring 203
Since the rear pole element 202 is arranged only in the vicinity of the joint with the iron core 201, the stiffness with which the rear pole element 202 resists pivoting becomes small. In addition, both ends 202a of the supporting pole element 202
, 202b to be smaller than the width of the central portion, the magnetic flux passing through the saddle pole element 202 can be effectively guided to the signal terminal. The first and second embodiments of the transfer type electromagnetic relay according to the present invention have been described above in detail. By fixing the permanent magnet to the upper part of the L-shaped signal terminal from which the fixed contact member is derived, the contact structure is By arranging it together with the magnet in a closed container, the iron core is not used as a magnetic path for maintaining the contact state, so it is possible to reduce the driving power required to reverse the troublesome state of the bush pole. Figure 7 is the third example of this invention.
FIG.

This embodiment requires a multi-transfer type lightning relay by assembling the contact switching elements of the one-transfer type electromagnetic relay shown in Figs. 4 and 5 on a common excitation winding and winding frame. The structure can be configured according to the number of contacts required. That is, as shown in FIG. 7, when four contact sets are required, a unit including contact constituent members, iron core 201, etc. sealed in an airtight container consisting of a pupil body 208 and a lid body 211 is used. Miss point switching element 300
4 pieces are prepared, and these point switching elements 300 are connected to the excitation winding 3.
10 is mounted on the common winding frame 309 and assembled. With this configuration, an electromagnetic relay having multiple contacts can be easily provided by simply preparing a winding frame suitable for the required number of contacts. As explained above, according to this invention,
A transfer type electromagnetic relay that is highly sensitive and effective for use with a high number of operations can be obtained, and the power consumption required for driving can be significantly reduced.

Further, according to the present invention, it is possible to easily provide a dew relay having a contact set as required.

[Brief explanation of drawings]

Figures 1 and 2 are partially cutaway perspective views showing an example of a secondary transfer type electromagnetic relay, and Figure 3 is a perspective view of a movable contact spring used in the Shigeru Kasumi relay shown in Figure 2. . 4 and 5 are cross-sectional configuration diagrams showing the first and second embodiments of the transfer type electromagnetic relay according to the present invention, and FIG.
The figure is a perspective view for explaining the joining shape of the rear pole element and the diaphragm spring, and FIG. 7 is a partially cutaway perspective view showing a third embodiment of the transfer type electromagnetic relay according to the present invention. In the diagram, 201... Iron core, 202...
Support pole, 203...Diaphragm spring, 204a, 20
4b... Signal terminal, 205a, 205b... Fixed contact, 206a, 206b... Permanent magnet, 207
a, 207b... Movable coin point, 208... Housing, 209, 309... Winding frame, 210, 31
0... Excitation winding, 211... Lid body, 212
...Winding terminal, 213...Yoke.茅】kuzutaichi 3 zutsutomu ノ zuhatsu 〆zuta〆zu＊J Prisoner Tsutomu? figure

Claims (1)

[Claims] 1. A first terminal leg with an excitation winding wound around its outer periphery to form an iron core and pass through a resin casing, and L-shaped second terminal legs integrally molded with the casing on both sides of the first terminal leg. and a third terminal leg, and the second and third terminal legs fixed to the upper end of the first terminal leg via a diaphragm spring and penetrating the housing.
an armature having movable contact members at both ends that selectively contact fixed contact members formed on the horizontal plate portions of the second and third terminal legs; a permanent magnet disposed in at least one of the excitation windings, and a lid member that is joined to the housing and constitutes an enclosure that airtightly accommodates the armature and the permanent magnets, and A unit that changes the tilting direction of the armature and switches contacts by creating a difference in magnetic attractive force between opposing terminal legs at each end of the armature depending on the direction of magnetic flux or the presence or absence of this magnetic flux. A transfer type electromagnetic relay comprising at least one contact switching element.