JPS5852605Y2 - polarized relay - Google Patents

Description

[Detailed description of the invention] The present invention relates to polarized relays. Conventionally, in polarized relays, it has been difficult to attach a movable iron plate, and the shock or noise generated when the movable iron plate and the permanent magnet are attracted is large. Met.

The present invention aims to provide a polarized relay that eliminates the above-mentioned drawbacks.

The present invention will be explained below with reference to the drawings.

1 to 3, reference numeral 1 denotes a cylindrical coil bobbin around which a coil 2 is wound, and has a first protrusion 3 for fixing a yoke on one end surface, and second protrusions 4, 4 for fixing a permanent magnet. , third protrusions 5, 5 for fixing the buffer rubber, and the third protrusions 5,
5, and spring contacts 6, 6 formed on the outer edges thereof and connected to both ends of the coil 2, respectively.

Reference numeral 7 denotes a U-shaped yoke in which one wing is fitted and fixed to the first protrusion 3 of the coil bobbin 1 through a fixing groove 8, and the base is disposed on the outer peripheral side of the coil 2 wound around the coil bobbin 1. The other portion extends along the other end surface of the coil bobbin.

Reference numeral 9 denotes a movable iron plate inserted into the hole 10 of the coil bobbin 1, one end of which extends near the side surface of the free end 11 of one wing of the yoke 7, which is bent and extended in the axial direction of the coil bobbin 1, and a part of which extends near the side surface of the free end 11 of one wing of the yoke 7, which is bent and extended in the axial direction of the coil bobbin 1. 1 is bent in a direction away from the protruding end 11 and folded back toward the base, and the other end is bent and engaged in the bending groove 12 of the other part of the yoke l.

13 is a cylindrical rod disposed in the bent groove portion 12;
After the other end of the movable iron plate 9 is engaged, the gap created between the coil bobbin 1, the yoke l, and the other end of the movable iron plate 9 is filled, and the swinging movement of the movable iron plate 9 is made smooth. Moreover, the extraction is stopped.

14 is a permanent magnet whose negative pole face is located on the second coil bobbin.
The free end 1 of one wing of the yoke 7 is brought into contact with the projections 4, 4 of the yoke 7.
The movable iron plate 9 is opposed to the side surface of the movable iron plate 9 via the movable iron plate 9, and the other pole face is opposed to a folded portion of a part of one end of the movable iron plate 9.

Reference numeral 15 denotes a buffer rubber, which is inserted between the other pole surface of the permanent magnet 14 and the third protrusions 5, 5, and has a notch corresponding to the folded part of one end of the movable iron plate 9. There is.

Reference numeral 16 designates a storage box main body, which has locking grooves 18, 18 formed on the inner side of the mutually opposing wall surfaces into which protrusions 17, 17 protruding from both side edges of the base of the yoke 7 are fitted, and the bottom surface thereof A recess 19 to be fitted into the outer surface of the bent groove 12 and a rib 20 protruding between the locking grooves 18, 18 and the recess 19 and abutting the other outer surface of the yoke 7 are formed. ing.

Reference numeral 21 denotes an insulating plate, which is fitted into the opening of the storage box main body 16.

22 is a movable frame, and protrusions 23 and 24 are respectively connected to the insulating plate 21.
is extended to both sides of the protrusion 26 at one end of the movable iron plate 9 through the hole 25 of the movable iron plate 9, and as the movable iron plate 9 swings, the permanent magnet 14 near the side surface of the insulating plate 21.

Reference numerals 28, 28, 29, and 29 are movable contacts disposed on the movable frame 22, and the opening of the storage box main body 16 is caused by the swinging of the movable iron plate 9 and the swinging of the movable frame 22. A fixed contact disposed on the cover 30 fitted on the cover 30 is contacted.

Contact springs 31 and 32 apply appropriate contact pressure to the movable contacts 28, 28 and 29, 29 in the movable frame 22.

Fixed terminals 33, 33, 34, and 34 project outward from the cover 30, respectively, and are connected to fixed contacts provided on the cover 30.

Coil terminals 35 and 35 are respectively projected outward from the cover 30 and are pressed into contact with the spring contacts 6 and 6 through holes 36 and 36 in the insulating plate 21.

Reference numeral 37 denotes a hole bored in the side wall of the cover 30 to prevent a portion of the movable frame 22 from colliding with the side wall of the cover 30 during swinging.

38, 38 and 39, 39 are E rings, respectively, which are attached to the storage box main body 1 after fitting the cover 30 to the storage box main body 16.
6 and the engaging protrusion formed on the side surface of the cover 30 are engaged and fixed with each other.

When an exciting current is applied to the coil 2, the movable iron plate 9 is moved to the side surface of the free end 11 of the yoke 7.

As the movable iron plate 9 moves, the movable frame 22 is moved in the A direction.

As a result, the movable contacts 28, 28, 29 of the movable frame 22
．． 29 is brought into contact with a fixed contact of the cover 30.

On the other hand, when the excitation current of the coil 2 is cut off, the movable iron plate 9 is attracted and moved to one pole surface of the permanent magnet 14.

In conjunction with the movement of the movable iron plate 9, the movable frame 22 is moved in the B direction.

As a result, the movable contacts 28, 28, 29 of the movable frame 22
．． 29 is spaced apart from the fixed contact of the cover 30.

As mentioned above, the polarized relay of the present invention has the following features: (a) One bent end of the movable iron plate and the cylindrical rod are inserted into the bent groove of the other part of the yoke, making it easier to attach the movable iron plate and preventing it from being removed. can be suitably achieved.

(b) The yoke-blade fixing groove is fitted and fixed to the first protrusion of the coil bobbin, and the permanent magnet facing the free end of the yoke-blade is fixed in contact with the second protrusion of the coil bobbin. , the distance between the free end of the yoke-blade and the permanent magnet can be set and ensured at a predetermined value.

(c) Since the buffer rubber is inserted between the permanent magnet and the third protrusion of the coil bobbin, the shock received by the permanent magnet due to the swinging of the movable iron plate is absorbed by the buffer rubber, and the permanent Damage to the magnet can be suitably prevented.

(d) Since a part of the other end of the movable iron plate is extended and folded back to surround the permanent magnet, magnetic efficiency can be increased and miniaturization can be achieved.

Furthermore, (e) a notch is formed in the buffer rubber to allow the extension folded portion of the other end of the movable iron plate to pass through, and a notch is formed in the free end of the yoke-blade to allow the protrusion of the movable frame to pass through; Miniaturization can be achieved.

Achieve practical effects such as

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of an embodiment of the polarized relay of the present invention, FIG. 2 is a sectional view of the same, and FIG. 3 is a top view of the same. 1... Coil bobbin, 2... Coil,
3,4.5...Protrusion, 6...Spring contact, 7...Yoke, 8...Fixing groove, 9
・・・・・・Movable iron plate, 10... Hole, 11...
...One free end of the yoke, 12...The other bent groove of the yoke, 13...Cylindrical rod, 14...
...Permanent magnet, 15...Buffer rubber, 16...
... Storage box body, 17 ... Protrusion, 18 ...
... Locking groove, 19 ... Recess, 20 ...
...Rib, 21...Insulation plate, 22...
Movable frame, 23゜24...Students, 25...
- Hole, 26... Protrusion on one end of the movable iron plate, 27 on the other end
...Notch, 28.29...Movable contact, 30...Cover, 31.32...Contact spring, 33.34...・Fixed terminal, 35
...... Coil terminal, 36... Hole, 37.
...Hole, 38゜39...E ring.

Claims (1)

[Scope of utility model registration request] A coil is wound around a cylindrical coil bobbin, a yoke is disposed between both openings of the cylindrical coil bobbin via the outer peripheral side of the coil, and a fixing groove is bored in one wing of the yoke,
The fixing groove is fitted into a first protrusion formed on one end surface of the coil bobbin, and one wing free end of the yoke is bent and extended in the axial direction of the coil bobbin, and the other part has a bent groove. The other end of the movable iron plate inserted into the hole of the cylindrical coil bobbin and the cylindrical rod are engaged in the bent groove of the other part, and the cylindrical rod is inserted into one wing of the yoke through one end of the movable iron plate. The second. formed on one end surface of the coil bobbin. a permanent magnet inserted and fixed between the third protrusions and one pole face of the permanent magnet of the buffer body are made to face each other, and a part of one end of the movable iron plate is extended and folded back to face the other pole face of the permanent magnet; A polarized relay formed by engaging a protrusion at one end of the movable iron plate with a movable frame.