JPS5842129A - Relay - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel type of relay in which contacts are switched using rotation of an iron core constituting an electromagnet.

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. 1 to 5 show a relay according to a first embodiment of the present invention, in which an iron core 12 is passed through a tH coil 11, and both ends of an iron core 120 are exposed from inside the coil 11 to the outside. The core 12 is rotatably supported within the coil (C) by a supporting portion ('f''' not shown) formed in the case 9, which will be described later, while each end of the core 12 is supported by a roughly V-shaped magnetic member. The armatures 2 and 2' configured by
The armatures 2 and 2' are arranged on the inner side of both ends so as to face each other. Reference numeral 3' denotes a magnetic piece disposed in parallel with the electromagnet 1 on the opposite side from the magnetic piece 3. Reference numeral 4 denotes a common terminal which vertically fixes the base 5, fixed contacts 41 and 42 are fixed on the horizontal piece 43, and the tip of the vertical piece 44 penetrates the base 5 and leads out to the outside. Reference numeral 1.6 designates a normally open terminal which is also fixed upright on the base 5 and is integrally formed with a normally open contact piece 62 made of an elastic conductive member and having a movable contact 61 fixed to its tip.

Note that the contact point 61 is provided at a portion opposite to the contact point 42 .

7 is a base 8 [normally closed contact piece 7 made of an elastic conductive member with a movable contact 71 fixed to the tip when fixed upright]
The contact 71 is a normally closed terminal integrally formed with the contact 71 and the contact 41.

8 is a coil terminal, and 9 is a case made of a transparent or opaque insulating material.

Next, the operation of the relay constructed as described above will be explained with reference mainly to FIGS. 1, 4, and 5.

For convenience of explanation, it is assumed that both ends of the magnetic piece 3 are magnetized by the permanent magnet 31 in the polarity shown in FIG. Therefore, in such a device, in a normal state (usually a state in which the electromagnet 1 is demagnetized), the permanent magnet 31
That is, due to the attractive force of the magnetic piece 3, the armatures 2 and 2' at both ends of the iron core 12 are attracted by the left side piece 21. 111 has stopped rotating at the position facing the magnetic piece 30. (Refer to Fig. 5 (A) Therefore, in this state, there is always an edge on the right side piece 22 of the armature 2 as shown in Fig. 1. When the open contact piece 621fi is lifted upward, the contact 61 is held open with respect to the contact 42.On the other hand, since the left piece 21ij is located opposite the magnetic piece 3, the elasticity of the normally closed contact piece 72 Contact point 7
1ij contact 41 is in press contact state. Therefore, when the electromagnet 1 is excited so that the armature 2, 2' has the same polarity as the opposing magnetic piece 3 as shown in FIG. As shown in (A),
A repulsive force acts on the Gs side and pulls.

Ti suction occurs on the G2 side, and the armatures 2, 2' are rotated clockwise and stopped at the position shown in FIG. 5(B). The armature 2.2' thus has its right-hand piece 22 lowered, while its left-hand piece 21 is raised. Therefore, the contact 61 of the normally open contact piece 62 presses into contact with the contact 42, while the normally closed contact piece 72 is lifted upward by the left side piece 21, and the contact 71 and the contact 41 are brought into contact with each other. It becomes open. Next, when the electromagnet 1 is de-energized, the armature 2.2' is moved by the attractive force of the permanent magnet 31, that is, the magnetic piece 3, as shown in FIG.
) from the position in the counterclockwise direction to return to the original state, that is, the state shown in FIG. 5(A). Note that in the above configuration, the elasticity of the normally closed contact piece 72 acts effectively when the armature 2 returns. In this manner, the normally open and normally closed movable contacts 61 and 71 are switched relative to the fixed contacts 41 and 42 in accordance with the excitation and demagnetization of the electromagnet 1.

Figures 6 and 7 are books for explaining the second embodiment of this invention, so some configurations may be added to the first embodiment.
Therefore, this is an example in which the present invention is applied to a latching relay. That is, in the previous embodiment, the magnetic piece 3 is placed between the electromagnet 1
The only difference is that a permanent magnet 31' is held in the center of a magnetic piece 3' arranged in parallel on the opposite side. Next, its operation will be briefly explained. In this case, the permanent magnet 31.3
1' is set so that the polarities in the same direction are opposite to each other. For convenience of explanation, both ends of the magnetic pieces 3 and 3' are magnetized with the polarity shown in FIG. 6, and in the initial state, the armature 2
．． The case where 2' is in the position shown in FIG. 7(A), that is, the left piece 21 of the armature 2 is positioned opposite to the magnetic piece 3 will be explained. When the electromagnet 1 is energized from the demagnetized state with the polarity of the armatures 2 and 2' shown in FIG. 2
1 are both magnetized to N polarity, a repulsive force is generated on the Q+ side, and an attractive force is generated on the G2 side, so the armature 2 rotates clockwise and moves to the right side as shown in Fig. 7 (B) K. The piece 22 stops at a position opposite the magnetic piece 3'. When the electromagnet 1 is de-energized in this state, it is attracted by the permanent magnet 31' of the magnetic piece 3' of the right side 22Fi and remains in a stopped state. Next, in the positional relationship shown in FIG. 7(B), the electromagnet is excited so that the polarity is opposite to that described above. In other words, when the armature 2 is magnetized to S polarity, an attractive force is generated on the GK side, but a repulsive force is generated on the G2 side, so the armature 2
is rotated counterclockwise and stopped at the position shown in Fig. 7 fA). When the electromagnet 1 is demagnetized in this state, the armature 2 is attracted to the magnetic piece 3 due to the attractive force of the permanent magnet 13 for the same reason as described above, and thus the stopped state is maintained. That is, this is how a latching relay is obtained.

As detailed above, according to the relay according to the present invention,
The armature 2, 2' and the magnetic pieces 3, 3' are held without contact with each other, and the armature 2 held in this way is
．． 2' is used to switch the contacts, so that there is no impact during operation. In other words, it eliminates the shortcomings of conventional electromagnetic relays, such as shortened lifespan due to mold build-up between the movable contact piece and the fixed iron core that occurs when switching contacts, malfunction due to pounding of the movable contact piece, and shortened lifespan due to contact wear, etc. This book allows you to create a relay with a new configuration that has a long life and fewer malfunctions.

By configuring the armature 2.2' so that the lance rests on the iron core 12, it is possible to provide a relay with excellent impact resistance and vibration resistance.

[Brief explanation of the drawing]

The drawings, of course, show embodiments of the invention.
The figure is a front view of the relay according to the first embodiment of the present invention, and the second figure is a front view of the relay according to the first embodiment of the present invention.
The figure is a plan view with the case in Figure 1 removed, Figure 3 is a side view, Figure 4 is a schematic representation of the main parts of the relay, and Figures 5 (A) and CB) are the same parts. FIG. 6 is a diagram schematically showing the main parts of the relay according to the second embodiment of the present invention, and FIGS. . 1...Electromagnet, 2.2'-Ha armature, 3.3'-
・Magnetic piece, 31.31'...Permanent magnet, 4...
・・Common terminal, 41.42・e...Fixed contact, 6・φ・ψ
e base, lit, 71・e・-movable contact, 6・・・・
Normally open terminal, 82--Normally closed contact, 7... Normally closed terminal, 72-- Normally closed contact, 8... Coil terminal.

Claims (1)

[Scope of Claims] Armatures are formed at both ends of the iron core of the electromagnet, and the armatures are positioned to face magnetic pieces disposed on both sides of the electromagnet, and a permanent magnet is attached to at least one of the magnetic pieces. The armature is integrally formed and rotatably supports the iron core, and in a normal state, the armature is either a normally closed contact piece or a normally open contact piece of the relay. By rotating the armature by excitation and demagnetization of the electromagnet, and reversing the state of contact between the armature and the normally closed contact piece or the normally open contact piece,
A relay characterized by being configured to switch the contact state of the relay.