JPS58181227A - Polarized electromagnetic 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 electromagnetic relays [7, particularly current-holding type relays]
m transfer 1! &E equipment PC related.

Conventionally, a U-shaped yoke 1゜2 and a U-shaped iron core 4 as shown in FIG. In an electromagnetic relay having a multi-magnet structure in which force and magnetic repulsion act in the same direction, the iron core 4 has the function of configuring the magnetic flux path of the magnet 3 into a closed magnetic path. Although it is easy to obtain so-called self-holding relays that are held by residual magnetic attraction, it is structurally difficult to obtain so-called current-holding relays that are held only when heavy driving pressure is applied and current flows through the coil. There were many.

In view of the above-mentioned drawbacks, the present invention has two U-shaped yokes, one large and one small, facing each other through magnets so that magnetic poles of VC14 are generated at both ends of each yoke. In a magnetic system arranged to be inserted between different magnetic poles generated at both ends of the yoke, the attractive force held on the other side is greater than the attractive force held on the designated magnetic pole side. A magnetic system is configured to create a difference in the magnetic attraction force, and a contact spring is configured so that the recovery force from the contact spring acting in the recovery direction is greater than the magnetic attraction force on the designated side. The present invention attempts to provide a current-holding type relay that is configured with a current flow system and is restored only when a 1' current flows into the drive coil.

The present invention will be described below based on embodiments shown in the drawings.

Figure ta2 is an example of an electromagnet structure used in the polarized electromagnetic relay of the present invention. In the figure, 1 and 2 are yokes for a pair of large and small magnetic poles, and 3 is a magnet held between these yokes 1 and 2. S by yoke 1 and 2 magnets 3
The pole 52 is formed by bending both ends magnetized to N poles into a U-shape so that the direction of magnetic flux from each N & to each S pole is perpendicular to the line connecting the magnetic poles of the magnet 3. . Reference numeral 4 denotes an iron core, and both ends of the iron core 4 are bent in the same way as the yoke 1.2 and are sandwiched between the magnetic pole parts of the yoke 1.2. Further, a coil 5 is wound around the iron core 4.

Furthermore, each yoke 1.2 has a magnetic pole face on the designated side of the magnetic pole part, which is made smaller so that a magnetic gap is formed on the magnetic pole face where the yokes 1, 2 and the iron core 4 are in contact with each other.
2 is installed.

Next, the principle of operation of the embodiment shown in FIG. 2 will be explained with reference to FIG. FIGS. 2 and 3 show an embodiment in which the iron core 4 and the coil 5 are fixed, and the armature consisting of the h1 magnet 3 and the yoke 1.2 is displaced. FIG. 3(a) shows a state in which a current is applied to the coil 5 in the same direction as the polarity of the yokes 1 and 2 to which both ends of the iron core 40 are attracted. As a result, the repulsive force between the same poles acts on both ends of the iron core 4, and the attraction force between the different poles decreases by υ0, so that the attraction force overcomes the load of the contact spring 23 and causes the armature to move as shown in the figure. Move in the direction of displacement.

Figure 3(b) shows the state after the moved armature is attracted and displaced by the other magnetic pole, and the four excitation fluxes from the coil 5 and the magnetic flux from the magnet 3 are combined, so a large magnetic attraction force is generated. can get. When the current in the coil 50 is cut off, the four excitation fluxes are demagnetized, and the contact area attempts to be held only by the residual attractive force of the magnet 3. However, since the magnetic pole area is small and there is a magnetic gap due to the reciprocal 22, The armature is bent by the load of the contact spring 23 and returns to the state shown in FIG. 3(a). FIG. 5 shows the relationship between the load on the contact spring 23 and the magnetic attraction force during this operation.

FIG. 4 shows another embodiment of the present invention, in which the yokes 1, 2 and 3 magnets are fixed, and the iron core 4 moves within the coil 5. Since the force relationship during operation in this embodiment is relative, it is the same as the description of the embodiment shown in FIGS. 2 and 3. Therefore, the explanation will be omitted.

FIG. 6 shows a half-sectional view of an embodiment of an INN vertical relay device having switching contacts for four circuits, using the basic structure of the present invention. In order to make it easier to understand the Fi structure in this figure, the armature is shown without moving, but the armature in a normal state is at both ends 4A of the iron core 4.

4B are the flesh ends IA, IB, 2A, 2 of the large and small yokes 1 and 2.
Of B, it is in contact with 2A and IB, which have a large magnetic attraction force, and is held by a residual magnetic attraction force of 3 magnetic force.

Hereinafter, this electromagnetic relay will be specifically explained based on FIGS. 6 and 7. The base 7 has switching signal terminals 16, 18 and common signal terminal 17 with 4 IP! The circuit, drive coil terminal 19, and recovery coil terminal 20 are fixed. The center m of the iron core 4 is fixed to the base 7 and inserted into a spool 8 around which the outer VC drive/recovery coil 5 is fully wound. Signal terminal 1
6.17.18 have movable contact springs 9 and 10.1, respectively.
1 are provided, and these mouth 1 moving contact springs 9, 10, 11
At the other end, contacts 12, 13, and 14 are fixed with bath contacts, etc.
I'm here. Movable contact spring 10 supported by common signal terminal 17. Movable contact spring 9 supported by Fi switching signal terminal.
11, and is penetrated and fixed by a spring support part 24 of a mold 6, which has a distal end part 15ri and an armature part 21 integrated therein. In this manner, the movable contact spring 10 is connected to the contact pole @2.
1, and as a result supports the armature portion 21' in a freely movable manner. The mold 6 has the yoke 1.2 and the magnet 3 all integrated. When a current flows through the coil 5, the armature portion 21Vi moves to the center axis of the coil 5 in the 36th row according to the operating principle described above, collides with the yoke 1.2, and is attracted and held. At this time, the contact 13 is completely displaced by the contact 12r Q4, and the contact is changed into conduction by the spring pressure of the movable contact spring 9,0υ. Note that Figure m7 is a model diagram of an example of the configuration of the movable contact spring and the armature mold 6 for easy understanding. Movable contact spring 10V! Since it is fixed by the spring support part 24 of the mold 6, the armature s21 can be displaced by the magnetic attraction force in the direction in which the magnetic attraction force acts.
I wonder if it's a one-sided hit phenomenon at the magnetic poles.

Wood brother #! As described above, A generates tiiim at both ends of two large and small U-shaped yokes set opposite each other using magnets VtJ, and creates a U-shaped yoke so that both ends of the iron core can be inserted between the magnetic poles at both ends of the yokes. By arranging the iron core, the attractive force and repulsive force are fully applied to the armature at two locations between the magnetic poles at both ends, and the combined force of the attractive force and repulsive force is in the same direction, resulting in a large magnetic attractive force. be able to. Also,
By creating a difference between the magnetic attraction forces generated at both ends of the iron core, and increasing the recovery force of the contact spring load from the side with the smaller magnetic attraction force, it is possible to create a polarized electromagnetic relay of the current holding type with a relatively large contact opening/closing capacity. Obtainable. Furthermore, York,
By making the iron core U-shaped, the suction contact surface becomes a sacrificial blood, so variations in suction force can be almost ignored.

Furthermore, by making one end of the contact spring into an integrated structure, the armature part can move parallel to the direction in which the magnetic attraction force acts. Therefore, stable magnetic attraction characteristics can be obtained.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a conventional 1 magnet structure, FIG. 2 is a perspective view of a basic electromagnet structure 81 according to an embodiment of the present invention, and FIG. 3 is a 1! magnet structure in which the yoke moves. An explanatory diagram of the operating principle using a cross-sectional view of an example of the magnet structure, Figure 4 shows the iron core moving! An explanatory diagram of the operating principle using a cross-sectional diagram of an example of horizontal magnet construction, Figure M5 is a characteristic diagram showing an example of the magnetic attraction force characteristics and repulsive negative characteristic of the vertical relay according to the present invention, and Figure 6 is the basic diagram. FIG. 7 is an explanatory diagram showing a specific structural example of an electromagnetic relay using an example of a magnet MIH; FIG. 7 is a schematic diagram showing an embodiment of a movable contact spring load system. 1.2...Yoke IA, IB, 2A
, 2B...Magnetic pole 3...Magnet 4...Iron core
4A, 4B... Core end 5... Coil 6...
Mold 7...Base 8...Spool 9,
10.11...n pivoting contact spring 12.13.14...
・Contact 16.18...Switching signal terminal 17...
・Common signal terminal 19.20...Coil i-coil 21
... Arming part 22 ... Religious 23.
・Contact spring Fig. 3 Fig. 4 Fig. 7 Fig. 24

Claims (1)

[Claims] (11) Both ends of a U-shaped iron core are arranged in magnetic pole parts formed at both ends of two large and small U-shaped yokes that hold magnets,
a multi-magnet structure that generates a magnetic attraction force and a magnetic repulsion force in the same direction in the magnetic pole part by a coil wound around the U-shaped iron core; and a contact spring group each having at least two or more sets of contacts. v4I has a spring structure that is supported on a single base, insulated and integrally provided with each contact spring terminal of the contact spring group, and further opens and closes the contacts by displacing the contact spring group. ! ! *In the ei relay, the U-shaped yoke and the U-shaped iron core have a difference in the magnetic attraction force generated when the magnetic pole m is fully displaced, and the spring recovery force of the contact spring group is equal to the magnetic attraction force. A polarized electromagnetic relay in which a magnetic gap is formed at the end of the U-shaped yoke and the U-shaped iron core written by Fl+I, and a small VC magnetic gap is formed at the end of the bracket so that the force is larger than that of a smaller one. (2) The U-shaped yoke and 8+J mIX! Claim 1, wherein a magnet is provided integrally with the spring structure.
Polarized electromagnetic relay as described in section. (3) The polarized electromagnetic relay according to item 1, wherein the iron core is fixed to the spring structure.