JPH03236135A - Polarized electromagnetic relay - Google Patents

Abstract

PURPOSE:To obtain a realy which can be used for a monostable type and a bistable type, by providing a nonmagnetized plate capable of shifting perpendicularly to the facing direction of pole pieces, between an armature and a first or second pole piece, and enabling this to be shifted from outside. CONSTITUTION:A nonmagnetizing plate 6 capable of shifting perpendicularly to the facing direction of pole pieces 11 and 12 is provided between an armature 16 and a first pole piece 11 or a second pole piece 12, and the nonmagnetizing plate 6 is constituted to be shiftable from outside. The nonmagnetized plate 6 is provided between the armature 16 and the first pole piece 11, and one side of the nonmagnetized plate 6 consisting of, for example, a nickel silver plate is fixed to the top of the lever 7, which is held freely in sliding in the groove 51 provided in a cover 5, consequently when the lever 7 projecting outward is shifted along the groove 51, the nonmagnetized plate 6 fixed to the top shifts perpendicularly to the facing direction of the pole pieces 11 and 12. Therefore, an electromagnetic relay having a pole can be obtained, which is constituted of parts made in common so that they can be assembled by the facilities of a single system, and can be used for both a monostable type and a bistable type.

Description

[Detailed Description of the Invention] [Summary] Regarding electromagnetic relays used for controlling various electronic devices, especially polarized electromagnetic relays that have both monostable and bistable characteristics, they can be assembled with one system of equipment. The purpose of this invention is to provide a polarized electromagnetic relay that is composed of common parts and can be used as either a monostable type or a bistable type. It has a permanent magnet disposed between the halves and magnetized in opposite directions, a yoke having a hinge at one end and magnetically connected to a magnetic pole piece at the other end, and a coil and an armature passing through the coil. In a polarized electromagnetic relay in which one end of an armature is swingably supported by a hinge portion and the other end of the armature is located between magnetic pole pieces, the armature and the first magnetic pole piece or the second magnetic pole piece are connected to each other.
A non-magnetized plate movable at right angles to the opposing direction of the magnetic pole pieces is provided between the magnetic pole pieces, and the non-magnetized plate is configured to be movable from the outside.

[Industrial application field]

The present invention relates to an electromagnetic relay used for controlling various electronic devices, and more particularly to a polarized electromagnetic relay having both monostable and bistable characteristics.

In a polarized electromagnetic relay, one end of the armature is usually arranged between a pair of magnetic poles, and the contacts are opened and closed by moving the armature excited by the coil between the magnetic poles. They are roughly divided into two types depending on their operating characteristics.

In other words, when the armature is not energized, the armature is always at one magnetic pole, but when the coil is energized, an attractive force in the opposite direction is generated and the armature is attracted to the other magnetic pole, and when the coil excitation is stopped, the armature returns to its original state. One is the monostable type (monostable type), which recovers to the current state, and the other is the bistable type (bistable type), which is attracted and held by the magnetic pole that is attracted even if the coil excitation is stopped, and is attracted and held by the other magnetic pole by the excitation current of different polarity. (table type or latching type).

However, the current monostable and bistable polar electromagnetic relays are designed differently, making it difficult to share the same components, leading to a rise in manufacturing costs. Therefore, it is desired to realize a polarized electromagnetic relay that can be used as both a monostable type and a bistable type.

(Prior Art) FIG. 3 is a perspective view showing the structure of a conventional polarized electromagnetic relay.

As shown in the figure, a conventional polarized electromagnetic relay has a driving part 1 equipped with a coil 2 and a contact spring part 3 disposed on one or both sides of the driving part 1. The driving part 1 and the contact spring part 3 are connected to a base. 4
and is sealed inside the cover 5. In the figure, 2
1 is a coil bobbin, 22 is a drawer terminal inserted into the coil bobbin 21, and the winding start end and winding end of the coil 2 are fixed to the drawer terminal 22.

The drive unit l has a first pole piece 11 and a second pole piece 11 facing each other.
A magnetic pole piece 12, a permanent magnet 13 disposed between magnetic pole pieces 0 and 12 and magnetized in opposite directions, and a hinge part 14 at one end and magnetic pole pieces 11 and 12 at the other end are magnetically connected. The armature 16 is composed of a coil 2 and an armature 16 that passes through the coil 2. The armature 16 has a card 17 for driving a movable contact in the middle, and one end of the armature 16 swings by a hinge part 14. It is freely supported and the other end is inserted between the magnetic pole pieces 11 and 12.

Further, the contact spring section 3 includes a pair of movable contact springs 31 implanted in a box-shaped base 4 made of an insulator, each movable contact spring 31
Two pairs of fixed contact springs 3 arranged to sandwich the tips of the
2, and the pair of grooves 18 provided in the card 17 are configured to fit into the movable contact springs 31, respectively, when the drive unit l is combined with the contact spring unit 3.

[Problem to be solved by the invention]

In the above polarized electromagnetic relay, if the permanent magnets that provide polarity are arranged so that the attractive forces of both magnetic pole pieces are equal, it becomes a bistable polarized electromagnetic relay, and if they are arranged so that the attractive forces of the opposing magnetic pole pieces are different. In the case of a non-wJ magnet, it becomes a monostable polarized electromagnetic relay that is always attracted to the side with the stronger attraction. That is, by changing the characteristics of the magnetic circuit in a conventional polarized electromagnetic relay, it is possible to form both bistable and monostable electromagnetic relays.

However, with conventional technology, it is difficult to change the characteristics of a magnetic circuit composed of the same components, and monostable and bistable polarized electromagnetic relays are designed separately. As a result, the number of parts is large because the parts that make up the magnetic circuit are different for monostable and bistable types, and assembly equipment needs to be prepared for each type depending on the shape, resulting in high manufacturing costs and capital investment. There was the problem of inviting.

An object of the present invention is to provide a polarized electromagnetic relay that is composed of common parts so that it can be assembled by a single system of equipment, and that can be used as either a monostable type or a bistable type.

[Means for Solving the Problems] FIG. 1 is a perspective view showing a polarized electromagnetic relay according to the present invention. The same objects are represented by the same symbols throughout the figures.

The above problem is solved by the first magnetic pole piece 11 and the second magnetic pole piece facing each other.
A joint comprising a magnetic pole piece 12, a permanent magnet 13 disposed between the magnetic pole pieces 11 and 12 and magnetized in opposite directions, and a hinge part 14 at one end and a magnetic pole piece 1112 at the other end. iron 15, coil 2 and armature 1 passing through coil 2
6, one end of the armature 16 is swingably supported by the hinge portion 14, and the other end of the armature 16 is supported by the magnetic pole pieces 11.6.
In the polarized electromagnetic relay located between the armature 16 and the first magnetic pole piece 11 or the second magnetic pole piece 12, there is a non-magnetized element movable at right angles to the opposing direction of the magnetic pole pieces 11 and 12. This is achieved by the polarized electromagnetic relay of the present invention, which is provided with a plate 6 and configured so that the non-magnetized plate 6 can be moved from the outside.

[Function] In Fig. 1, a non-magnetized plate movable at right angles to the opposing direction of the magnetic pole pieces is provided between the armature and the first magnetic pole piece or the second magnetic pole piece, and the non-magnetized plate is removed from the outside. By configuring it so that it can be moved, for example, by moving the non-magnetized plate to a position other than the point where the armature and the magnetic pole piece contact, it can be used as a bistable polarized electromagnetic relay in which the attractive forces of both magnetic pole pieces are equal. When the non-magnetized plate is moved to the point where the armature and the magnetic pole pieces come into contact, a difference occurs in the attractive force between the two magnetic pole pieces, resulting in a monostable polarized electromagnetic relay. That is, it is possible to realize a polarized electromagnetic relay that is composed of common parts so that it can be assembled by one system of equipment, and that can be used as either a monostable type or a bistable type.

〔Example〕

Embodiments of the present invention will be described below in the attached sections. Note that FIG. 2 is a diagram showing the operating characteristics of the polarized electromagnetic relay according to the present invention.

The difference between the polarized electromagnetic relay according to the present invention shown in Part 1 and the conventional polarized electromagnetic relay is that the armature 16 and the first magnetic pole piece 11
Alternatively, a non-magnetized plate 6 movable at right angles to the opposing direction of the magnetic pole pieces 11 and 12 is provided between the second magnetic pole pieces 12, and the non-magnetized plate 6 is configured to be movable from the outside. .

That is, in the same figure, a non-magnetized plate 6 is provided between the armature 16 and the first magnetic pole piece 11, and a lever 7, which is slidably held in a groove 51 provided in the cover 5, has a non-magnetized plate 6, for example. One side of a non-magnetized plate 6 made of a nickel silver plate or the like is fixed. Therefore, when the lever 7 protruding to the outside is moved along the groove 51, the non-magnetized plate 6 fixed to the tip of the lever is moved to the magnetic pole piece 1.
1. Move perpendicular to the opposite direction of 12.

Figure 2 shows the operating characteristics of a polarized electromagnetic relay, that is, the characteristics of the magnetic circuit's attractive force on the armature. ). The driving section of the polarized electromagnetic relay according to the present invention is bistable as shown in FIG. 2(a), and corresponds to the state in which the non-magnetized plate is moved to a position other than the point where the armature and the magnetic pole piece contact.

When there is no coil excitation, the attractive force of both magnetic pole pieces becomes balanced at the center of the stroke of the armature and becomes zero, and the closer the armature is to the magnetic pole piece with this point as the center of symmetry, the more the attractive force in the direction of the magnetic pole piece increases. To increase. Therefore, the attraction force ■, which is the combination of the magnetic pole piece attraction force ■ and the coil excitation, overcomes the spring load force ■, and the armature is attracted to one of the magnetic pole pieces. Since it is larger, it will remain in that state. In this case, the coil is reversely excited to generate an attractive force (■) and reverse the rotation.

The drive section of the polarized electromagnetic relay according to the present invention is bistable as shown in FIG. ]), the equilibrium of the attractive forces is broken and the system becomes monostable.

In other words, because the difference between the attractive force (■) of the magnetic pole piece on the operating side and the spring load force (■) is small, the armature operates by excitation of the coil, but if the coil excitation is stopped, that state cannot be maintained, and the armature leaves the magnetic pole piece. It is attracted to the magnetic pole piece on the opposite side and recovers.

In this way, a non-magnetized plate movable at right angles to the opposing direction of the magnetic pole pieces is provided between the armature and the first magnetic pole piece or the second magnetic pole piece, and the non-magnetized plate is configured to be moved from the outside. For example, if the non-magnetized plate is moved to a position other than the point where the armature and the magnetic pole piece touch, it can be used as a bistable polarized electromagnetic relay in which the attractive forces of both magnetic pole pieces are equal, and the armature and magnetic pole piece are When the non-magnetized plate is moved to the point of contact, a difference occurs in the attractive force between the two magnetic pole pieces, resulting in a monostable polarized electromagnetic relay. That is, it is possible to realize a polarized electromagnetic relay that is composed of common parts so that it can be assembled by one system of equipment, and that can be used as either a monostable type or a bistable type.

(Effects of the Invention) As described above, according to the present invention, a polarized electromagnetic relay is constructed of common parts so that it can be assembled by one system of equipment, and can be used as either a monostable type or a bistable type. can be provided.

1 is a drive unit, 3 is a contact spring part, 5 is cover 7 is the lever 13 is a permanent magnet, 15 is a yoke, 17 is a card, 21 is a coil bobbin, 31 is a movable contact spring; 51 is a groove; respectively.

2 is a coil, 4 is the base, 6 is a non-magnetized plate, 11.12 is the magnetic pole piece, 14 is a hinge part; 16 is an armature; 18 is a groove; 22 is a pull-out terminal; 32 is a fixed contact spring;

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a polarized electromagnetic relay according to the present invention, Fig. 2 is a diagram showing the operating characteristics of a polarized electromagnetic relay according to the present invention, and Fig. 3 shows the structure of a conventional polarized electromagnetic relay. This is a perspective view. In the figure (α) Invention 1: 16 Polarized electrode a Sewing power supply 0 Operation characteristics 1 Characteristics 1 Figure 2 In the present invention

Claims (1)

[Claims] A first magnetic pole piece (11) and a second magnetic pole piece (12) facing each other, a permanent magnet (13) disposed between the magnetic pole pieces (11, 12) and magnetized in opposite directions; A yoke (15) having a hinge part (14) and having the magnetic pole pieces (11, 12) magnetically connected to the other end thereof, a coil (2), and an armature (2) passing through the coil (2). 16), one end of the armature (16) is swingably supported by the hinge portion (14), and the other end of the armature (16) is supported between the magnetic pole pieces (11, 12). In the polarized electromagnetic relay located at
1. A polarized electromagnetic relay comprising: a non-magnetized plate (6) movable perpendicularly to the opposing direction of the polarized electromagnetic relay;