JPS5926099B2 - 4-gap polar relay - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a four-gap poled relay in which an armature rotates within a coil frame, and contacts are opened and closed by the rotation of the armature.

Conventional 4-gap polarized magnetic circuits in which the armature is rotated within a coil frame are known for their high efficiency and have been realized as polarized relays, but conventional 4-gap polarized relays are The central part of the polarized relay is supported by a rotating shaft inside the frame, and the contacts are rotated around this rotating shaft, so it is necessary to arrange and support the rotating shaft within the coil frame. Therefore, it is difficult to obtain a support structure for this rotating shaft, and even if a rotating shaft is provided, the armature may be damaged due to deformation of the coil frame due to external force when the coil wire is wound around the coil frame. This solves the problem that it is difficult to maintain the center of rotation at a highly accurate position relative to the yoke magnetic pole surface, the contact of the armature with the magnetic pole surface becomes poor, the contact stroke varies, and it is difficult to stably obtain the attractive force. had.

The present invention has been provided in view of the above-mentioned points, and a primary object of the present invention is to provide a four-gap polarized relay that can stably obtain armature attraction force and contact stroke, is easy to configure, and is inexpensive. The first object of the present invention is to provide a four-gap polarized relay that can obtain a wiping action of the contacts, thereby improving the welding resistance of the contacts and reducing chatter when making the contacts. The third objective is to provide a 4-gap polarized relay that uses common parts with the latching type and can easily realize single operation by adding some parts. .

Hereinafter, the present invention will be explained in detail with reference to embodiment figures.

Reference numeral 1 denotes a coil frame integrally molded from a synthetic resin material, on which a coil terminal 13 is integrally implanted, and a coil 14 is wound around this coil frame 1.

Reference numeral 2 denotes an armature made of a magnetic material, which is inserted into the coil frame 1 in the shape of an iron core and is rotatable within the coil frame 1.The armature 2 is equipped with a movable spring. 4 is fixed through.

One end of the movable spring 4 is fixed to the common terminal 5 on the base end 4a side by welding, and the free end 4b of the movable spring 4 is provided with contacts 6, 6 on both sides thereof.

Reference numeral 3 denotes a yoke, which is formed in a substantially U-shape, and is a pair of yokes 3 and 30 disposed opposite to each other, with the opposing surfaces of both leg ends being magnetic pole surfaces, and these magnetic pole surfaces are respectively opposed to the magnetic pole surfaces on both sides of both ends of the armature 2. A permanent magnet 16 is disposed between the upper sides of the yokes 3, 3.

Reference numerals 7 and 8 denote fixed terminals, and fixed contacts 9 and 10 are respectively fixed to opposing surfaces of the coil frame 1.
Fit the upper and lower parts of the fixed terminals 7 and 8 into the sulins N7 and 17 and the grooves 18 and 18 provided in a, respectively, and arrange both fixed contacts 9 and 10 in the contact arrangement part 1a, and then connect the free end of the movable spring 4. 4b is arranged between these fixed contacts 9 and 10 so that the contacts can be exchanged freely, and the common terminal 5 to which the base end 4a of the movable spring 4 is fixed is connected to the spring of the coil frame 1 in the same way as above. It is fixed to the fixed part 1b.

19 is a case, and 20 is an insulating cover.

The four-gap poled relay of the present invention is assembled as shown in the horizontal sectional view of FIG. 2 and the longitudinal sectional view of FIG.
The magnetic pole surfaces on both ends of the armature 2 are alternately attracted to the magnetic pole surfaces located diagonally to each other on the yoke 3, and as a result, the movable spring 4
The free end 4b side of moves alternately between fixed contacts 9 and 10,
This is how the contacts are replaced.

By the way, in the above embodiment, two armature pieces 2a,
The armature 2 and the movable spring 4 are integrated by sandwiching the movable spring 4 between the opposing protrusions of the armature 2b, but as shown in FIG. 4 may be fixed through the hole.

FIG. 5 shows a projection 1 for regulating the armature rotation position inside the coil frame 1 corresponding to the rotation center position of the armature 20 in the present invention.
1.11 is provided in a protruding manner, and this is an embodiment in which the operation adjustment of the armature 2 and the movable spring 4 is facilitated.

That is, in the embodiment shown in FIG. 5, when adjusting the operation, it is not possible to adjust the contact spring for this operation adjustment because it does not have an independent contact spring. The operating sensitivity is adjusted by twisting the base end 4a of the movable spring 4 as shown in FIG. Since the work is difficult, the projections 11, 11 . is provided to restrict the rotational position of the armature 2.

However, in this embodiment, the balance of impressions can be easily adjusted, and the spring characteristics of the free end side of the movable spring 4, such as contact pressure, do not change during adjustment, and the operating characteristics are stabilized.

In addition, in the above-mentioned embodiment, there is a protrusion 11 inside the coil frame 1.
．． 11 is provided, however, a protrusion 11.11 may be provided protruding from the armature 2 side as shown in the exploded perspective view of FIG. 7 to restrict the rotational position of the armature 2. In the embodiment shown in FIG. 7, projections 11.11 are formed extending from the upper and lower ends of the movable spring 4 which is held between the armature pieces 2at and 2b.

FIGS. 8 to 10 show an embodiment in which a movable spring 4 is passed through an armature 2 formed in a cylindrical shape, and the movable spring 4 is fixed to the armature 2 by narrowing the middle position of the armature 2. In the illustrated embodiment, a circular or oval cylindrical armature 2 is provided.

Therefore, in the illustrated embodiment, since the armature 2 has an integral structure, the magnetic resistance of the armature itself is reduced and the operating efficiency is improved, and since the armature 2 is formed in a cylindrical shape, manufacturing is easy. It is easy to obtain dimensional accuracy and can be manufactured at low cost.

Furthermore, if the armature 2 is formed into a round pipe or an oval pipe shape as in the illustrated embodiment, the area facing the magnetic poles will be in an arc shape, the magnetic resistance in the air gap will be small, and an efficient magnet structure will be obtained. The frame 1 can be made into a cylindrical shape, which increases the coil constant and further improves efficiency, and the inclination of the armature 2 within the coil frame 1 requires precision, which improves ease of assembly. .

The schematic diagram in FIG. 11 and the operational explanatory diagrams in FIGS. In the four-gap polarized relay of the embodiment according to the first invention shown in FIGS. 10 to 10, a difference is provided between the spring force on the base end 4a side of the movable spring 4 and the spring force on the free end 4b side It is something.

Therefore, in this embodiment, when the armature 2 is operated by excitation of the coil 14, the armature 2 portion on the base end 4a side of the movable spring 4 starts operating first, and then the armature 2 portion on the free end 4b side starts operating. The wiping operation is performed before the contact opens and after the contact is closed.

That is, in FIG. 12, the coil 14 is
When is not energized, the armature 2 is self-held at the position shown in the figure by the magnetic force of the permanent magnet 16 against the spring force of the contacts of the movable spring 4.

Next, when the coil 14 is energized, the spring force on the base end 4a side is made larger than the spring force on the free end 4b side as shown in the figure, so the 2 parts of the armature on the base end side start operating. However, the fixed contact 9 and the contact 6 are not yet separated, and a wiping operation is performed from side to side.

After this, when the armature 2 portion on the base end 4a side separates from the magnetic pole surface on the yoke 3 side, the attractive force of the armature 2 portion on the free end 4b side to the yoke 3 magnetic pole surface decreases rapidly, as shown in Figure C. However, the armature 2 is moved by the spring force of the movable spring 4, and the contacts 9 and 6 are opened and separated.

Next, the armature 2 is attracted to the magnetic pole surface of the yoke 3 opposite to the attracted magnetic pole surface and continues to rotate, but at this time, since the spring force of the movable spring 4 on the free end 4b side is small, As shown in figure d, the armature 2 portion on the free end 4b side is first attracted to the magnetic pole surface of the yoke 3, and at the same time, the space between the fixed contact 10 and the contact 6 is closed to perform contact making.

As described above, when the portion of the armature 2 on the free end 4b side hits the magnetic pole surface of the yoke 3, the attractive force on the base end 4a side of the armature 20 increases rapidly, and the force on the base end 4a side of the movable spring 4 increases. The base end 4a side of the armature 20 also contacts the magnetic pole surface of the yoke 3 against the spring force.
The contact is suctioned and the operation is completed as shown in FIG.

Even if the excitation of the coil 14 is cut off in the state shown in FIG. 13e, this state is maintained.

In the embodiments shown in FIGS. 11 and 12, configurations such as those shown in the embodiments shown in FIGS. 5 to 10 may be adopted.

13 to 15 atb show an embodiment according to the third aspect of the present invention as set forth in claim 7, and are similar to the embodiment shown in FIGS. 1 to 10. This is a single-action type 4-gap polarized relay.

However, in the embodiment of the third invention, the armature 2
One end of the auxiliary spring 12 is fixed to the auxiliary spring 12, and the other end of the auxiliary spring 12 is brought into contact with the magnetic pole surface of the yoke 3 on the base end 4a side of the movable spring 4.

Further, in this embodiment, the further extending portion 12a of the other end of the auxiliary spring 12 is brought into contact with the cut and raised piece 5a of the common terminal 5,
The spring force of the auxiliary spring 12 is adjusted by the cut and raised piece 5a.

However, in a single lever action type four-gap polarized relay, the auxiliary spring 12 is connected to the armature 2 on the base end 4a side of the movable spring 4.
The armature 2 is pressed against the spring force of the movable spring 4 to apply a rotational force in the counterclockwise direction in FIG. 15, so that the contact 6 contacts the fixed contact 10 on the NC side and maintains this state. ing.

Next, when the coil 14 is energized, the magnetic force exerts a driving force to rotate the armature 2 clockwise in the figure, and the contact 6 comes into inverted contact with the fixed contact 9 on the NO side.

After that, when the excitation of the coil 14 is cut off, a first
As shown in Figure 5, since the auxiliary spring 12 is interposed, the magnetic resistance passing through this part is large, and the magnetic attraction force decreases rapidly when the excitation is cut off. When the armature 2 portion on the end 4a side moves counterclockwise in the figure and approaches the magnetic pole surface on the opposite side of the yoke 30, the armature 2 portion on the movable spring 4 free end 4b side of the armature 2 moves counterclockwise in the figure. This part becomes the same polarity in the permanent magnet 16 as the magnetic pole surface of the yoke 3 to which this part is attracted, and due to the moment due to this repulsive force, the spring force on the free end 4b side of the movable spring 4, and the spring force of the auxiliary spring 12, counterclockwise in the figure a in Fig. 15.
The state will be restored.

As described above, in the present invention, an armature is disposed within a coil frame, a coil is wound around the outer periphery of the central shaft in the longitudinal direction of the coil frame, a pair of yokes are attached to the coil frame, and each yoke is The magnetic pole surfaces provided at both ends are positioned at both ends in the longitudinal direction within the coil frame, so that the magnetic pole surfaces of the yoke and the magnetic pole surfaces on both sides of the armature at both longitudinal ends are opposed, and a permanent magnet is placed between the pair of yokes. The proximal end of the movable spring, which is fixed through the armature in the longitudinal direction, is fixed outside the coil frame and connected to the common terminal, and a contact is provided at the free end of the movable spring to fix the fixed terminal side. Since the contacts are arranged between the contacts so that they can be replaced freely, there is no need to support the armature by a rotating shaft, and there is no need for accuracy of the shaft or center hole of the armature, so the component configuration is simple. In addition to being inexpensive, the attraction force and stroke do not change due to external forces such as deformation of the coil frame, resulting in stable relay operation, and there is no need for a separate contact spring. This has the effect of making it more compact.

Further, in the second invention, since a difference is provided between the spring force on the proximal end side and the spring force on the free end side of the movable spring, a wiping operation is performed when the contact opens and closes. Moreover, it has the effect of improving welding resistance and reducing chatter when making contacts.

Furthermore, in the third invention, a single action type relay can be constructed by simply adding an auxiliary spring to a latching type four-gap polarized relay, and most of the necessary parts can be shared, making it possible to reduce the cost. It is easy to manufacture, and has the effect of maintaining high magnetic efficiency because the area facing the armature is not changed.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of one embodiment of the present invention, FIG. 2 is a horizontal sectional view of the same, FIG. 3 is a vertical sectional view of the same, and FIG. 4 is a perspective view of another embodiment of the armature of the same. , FIG. 5 is a horizontal sectional view of another embodiment same as above, FIG. 6 is a schematic diagram of the embodiment shown in FIG. 5, and FIG.
FIG. 8 is an exploded perspective view of yet another embodiment of the same, FIG. 9 is a horizontal sectional view of the same, and FIG. 10 is a longitudinal sectional view of the same. FIG. 11 is a schematic diagram of an embodiment according to the second invention of the present invention, and FIG. 12 a "-'
Fig. 13 is an exploded perspective view of the embodiment according to the third aspect of the present invention, Fig. 14 is a horizontal sectional view of the same, and Fig. 15 a and b are explanatory views of the same as the above. Yes, 1 is the coil frame, 2 is the armature, 3 is the yoke, 4 is the movable spring, 4a
is the base end, 4b is the free end, 5 is the common terminal, 6 is the contact point, 7,
Numerals 8 and 10 are fixed terminals, 9 and 10 are fixed contacts, 11 is a protrusion, and 12 is an auxiliary spring.

Claims (1)

[Scope of Claims] 1. An armature is arranged within a coil frame, a coil is wound around the outer periphery of the central shaft in the longitudinal direction of the coil frame, a pair of yokes are attached to the coil frame, and both ends of each yoke are attached to the coil frame. The magnetic pole surfaces provided on the yokes are located at both longitudinal ends of the coil frame, so that the magnetic pole surfaces of the yoke and the magnetic pole surfaces on both sides of the armature at both longitudinal ends are opposed, and a permanent magnet is placed between the pair of yokes. The proximal end of a movable spring that is installed and fixed to the armature through the armature in the longitudinal direction is fixed outside the coil frame and connected to the common terminal, and a contact is provided at the other end of the movable spring to connect the fixed contact on the fixed terminal side. A four-gap polarized relay characterized by having contacts arranged in between so that they can be exchanged freely. 2. 4 of Claim 1, characterized in that a protrusion for regulating the rotational position of the armature is provided protruding from the armature side or inside the coil frame in correspondence with the rotational center position of the armature. Air gap polarized relay. 3. The movable spring is inserted into a cylindrical armature, and the movable spring is fixed to the armature by narrowing the middle position of the armature. Air gap polarized relay. 4 Arrange the armature in the coil frame, wind the coil around the outer circumference of the longitudinal center shaft of the coil frame, attach a pair of yokes to the coil frame, and attach the magnetic pole surfaces provided at both ends of each yoke. A permanent magnet is installed between the pair of yokes, with the magnetic pole surface of the yoke facing the magnetic pole surfaces of both longitudinal ends of the armature at both longitudinal ends of the coil frame. The proximal end of the movable spring fixedly penetrated in the longitudinal direction is fixed outside the coil frame and connected to the common terminal, and a contact is provided at the free end of the movable spring so that the contact can be exchanged freely between the fixed contacts on the fixed terminal side. A four-gap polarized relay characterized in that the spring force on the proximal end side and the spring force on the free end side of the movable spring are different from each other. 5. A projection according to claim 4, characterized in that a protrusion for regulating rotational movement of the armature is provided on the armature side or inside the coil frame in a manner corresponding to the rotational center position of the armature. Air gap polarized relay. 6. The movable spring is inserted into a cylindrical armature, and the movable spring is fixed to the armature by narrowing the middle position of the armature. Air gap polarized relay. 7 Arrange the armature in the coil frame, wind the coil around the outer circumference of the center shaft in the longitudinal direction of the coil frame, attach a pair of yokes to the coil frame, and attach the magnetic pole surfaces provided at both ends of each yoke. A permanent magnet is installed between the pair of yokes, with the magnetic pole surface of the yoke facing the magnetic pole surfaces of both longitudinal ends of the armature at both longitudinal ends of the coil frame. The proximal end of the movable spring that is fixed through the coil in the longitudinal direction is fixed outside the coil frame and connected to the common terminal, and a contact is provided at the other end of the movable spring so that the contact can be exchanged freely between the fixed contacts on the fixed terminal side. A four-gap polar relay characterized in that the auxiliary spring is arranged so that one end is fixed to an armature and the other end of the auxiliary spring is in contact with a magnetic pole surface of a yoke on the base end side of the movable spring. 8. 4 of Claim 7, characterized in that a protrusion for regulating rotational movement of the armature is provided protruding from the armature side or inside the coil frame in correspondence with the rotational center position of the armature. Air gap polarized relay. 9. 4 as set forth in claim 7, characterized in that an operating spring is inserted into a cylindrical armature, and is fixed to the armature as a movable spring by tightening the intermediate position of the armature. Air gap polarized relay.