JP3003916U - Rotating fulcrum type polarized relay - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a rotary fulcrum type polarized relay 1 which has a simple structure, is easy to assemble, and is highly resistant to impact and has high reliability. [Composition] Contact spring block 2 and polarized electromagnet block 3
And the body block 4 is assembled in one direction and provided with a stopper 5A facing the center portion in the depth direction inside, and is configured to face both ends of the armature 6 of the contact spring block 2 with a predetermined gap (distance do). A rotating fulcrum type polarized relay 1 covered with a cover 5.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rotary fulcrum type polarized relay having a rotary fulcrum portion on an armature.

[0002]

[Prior art]

 As disclosed in Japanese Patent Laid-Open No. 5-298997, a conventional rotary fulcrum type polarized relay has a fulcrum part of an armature that rotates in contact with a permanent magnet, and a part of the fulcrum part protrudes from the armature. It is known that the metal part and the remaining part are formed of a resin part on the armature so that the heights of the resin part and the metal part are substantially on the same plane.

In the conventional rotary fulcrum type polarized relay configured as described above, the fulcrum part of the armature contacts the permanent magnet, and the metal part of the fulcrum part and the permanent magnet form a part of the magnetic circuit. Since the metal part of the fulcrum part and the resin part of the fulcrum part contact the permanent magnet to form the fulcrum of the armature, compared to the rotating fulcrum type polarized relay in which the fulcrum part is entirely made of metal, According to the company, the loss is minimized, the wear of the fulcrum is alleviated, the change in the magnetic resistance of the magnetic circuit is reduced, and the change over time in the relay operation is improved to stabilize the operation.

Further, in the conventional rotary fulcrum type polarized relay, a hinge spring piece of a contact spring block in which an armature and a contact spring having a plurality of sets of movable contacts are integrated is fixed to a fixing piece of a case, and The fulcrum portion in contact with the magnet is configured to rotate about the fulcrum.

[0005]

[Problems to be solved by the device]

 Since the conventional rotary fulcrum type polarized relay is configured to be fixed only by the hinge spring piece of the contact spring block and the fixing piece of the case, if a strong force acts in the longitudinal direction of the armature due to drop or impact, the contact spring block Is deformed beyond the elastic deformation range, and there is a problem that the impression and the opening characteristics change significantly.

The present invention has been made to solve such a problem, and an object thereof is to provide a rotary fulcrum type polarized relay which is resistant to impact and which suppresses deformation of a contact point block within an elastic deformation range. is there.

[0007]

[Means for Solving the Problems]

 In order to solve the above problems, the rotary fulcrum type polarized relay according to the present invention is characterized in that the cover is provided with a stopper for preventing deformation of the spring block.

In addition, the rotary fulcrum type polarized relay according to the present invention is characterized in that the stopper is formed integrally with the cover and is opposed to both ends of the armature at a predetermined interval.

[0009]

[Action]

 In the rotary fulcrum type polarized relay according to the present invention, since the cover is provided with the stopper, it is possible to prevent the spring block from being deformed by an impact.

Further, in the rotary fulcrum type polarized relay according to the present invention, the stopper is formed integrally with the cover, and the both ends of the armature are opposed to each other at a predetermined interval. Can be suppressed within the elastic deformation range.

[0011]

【Example】

 An embodiment of the present invention will be described below with reference to the accompanying drawings. 1 to 4 show the structure of a rotary fulcrum type polarized relay according to the present invention. FIG. 1 is a block diagram of a cover of a rotary fulcrum type polarized relay according to the present invention, FIG. 2 is a sectional view of a rotary fulcrum type polarized relay according to the present invention, and FIG. 3 is a rotary fulcrum type polarized relay according to the present invention. Fig. 4 shows the overall configuration of the rotary fulcrum type polarized relay according to the present invention.

In FIGS. 1 and 2, the cover 5 includes a pair of stoppers 5 A facing the central portion in the depth direction inside, and a predetermined gap (distance do) is provided at both ends of the armature 6 of the contact spring block 2. ) Are configured to face each other.

When the rotary fulcrum type polarized relay 1 receives a large force due to a drop or impact in the A direction (longitudinal direction of the armature 6), the stopper 5A is biased in the A direction and the contact spring block. The gap do is set so as to prevent the second movable contact block 8 from being deformed beyond the elastic deformation range. The pair of stoppers 5 facing each other are formed integrally with the cover 5.

Next, the configuration of the rotary fulcrum type polarized relay 1 will be described with reference to the assembly view of FIG. The rotary fulcrum type polarized relay 1 is composed of a contact spring block 2, a polarized electromagnet block 3, a body block 4 and a cover 5 of FIG. 4, and the contact spring block 2, the polarized electromagnet block 3 and the body block 4 are connected to each other. After assembling in one direction of the arrow, cover with the cover 5.

The contact spring block 2 includes an armature 6, a movable contact block 8 having four contact springs 8 A, and a contact spring support portion 9 for supporting the contact spring 8 A. The movable contact block 8 is integrally formed.

The armature 6 is formed of a plate-shaped magnetic metal, and the ends 6 A and 6 B at both ends in the longitudinal direction are respectively formed by the substantially U-shaped iron core 12 B of the polar electromagnet block 3. It is configured to contact the magnetic pole 12a and the magnetic pole 12b.

The contact spring support portion 9 is formed of a resin molded product, supports four sets of contact springs 8A having a contact 8B formed of a good electric conductor such as silver palladium on the tip, and is integrally formed with the armature 6. To do. Two sets of contact springs 8A, which are arranged on both sides in the longitudinal direction of the armature 6, are integrated with a fixed portion 8C that is electrically connected, and are fixed to the fixing piece 14 of the body block 4 by laser welding or the like. , With electrical continuity.

The polarized electromagnet block 3 is fixed by press-fitting it between the coil block 12 in which the coil 12A is wound around the substantially U-shaped iron core 12B and the magnetic poles 12a and 12b of the coil block 12 to fix the iron core. It is composed of a flat plate yoke 11 that forms a magnetic bypass circuit with 12B, and a rectangular permanent magnet 10 that is mounted in a recess 11A provided in the flat plate yoke 11.

The flat yoke 11 shows a case of a single-stable type polar electromagnet, and the recess 11A formed asymmetrically with respect to the center of the flat yoke 11 and the magnetic resistance on the opposite side of the recess 11A has a large magnetic resistance. In order to achieve a stable state, the flat yoke 11 is provided with a magnetic resistance adjusting portion 11B formed by cutting out a part thereof, and the end portion 6A of the armature 6 is always in contact with the magnetic pole 12a side in a non-excited state. Configured to form. Further, the recessed portion 11A is formed symmetrically with respect to the center of the flat plate yoke 11 and the magnetic resistance adjustment portion 11B is not provided, whereby a latching type polarized electromagnet that forms a bistable state is formed. You can also

By press-fitting the plate-shaped yoke 11 between the magnetic poles 12a and 12b of the iron core 12B that face each other, the plate-shaped yoke 11 forms a magnetic bypass circuit between the rectangular permanent magnet 10 and the iron core 12B. Forming and applying a power source whose polarity is determined in advance to the coil block 12, the polarities (N, S poles) of the magnetic poles 12a, 12b corresponding to the direction of the current flowing in the coil 12A (law of the right thumb) are set, On the other hand, a magnetic flux that is proportional to the product of the number of turns of the coil 12A and the value of the current flowing through the coil 12A (magnetomotive force) and is inversely proportional to the resistance (magnetic resistance) of the magnetic circuit is generated.

The rectangular permanent magnet 10 is formed according to the shape of the recess 11A so as to be housed in the recess 11A provided in the flat yoke 11, and the surface side in contact with the bottom surface of the recess 11A is the S pole, Magnetize so that the opposite surface side becomes the N pole.

The body block 4 constitutes a case for accommodating the polar electromagnet block 3, and also includes two sets of power supply terminals (+) 16 A and a power supply for applying power to the coil 12 A of the polar electromagnet block 3. Terminal (-) 16B, fixed contact 13A that contacts the four movable contacts 8A of the contact spring block 2 to form a break contact of two circuits, and fixed contact 15A and fixed contact 13A that form a make contact of two circuits. Two fixed contact terminals 13B that are in conduction with each other, two fixed contact terminals 15B that are in conduction with the fixed contact 15A, two fixed pieces 14 that are in conduction with the fixed portion 8C of the contact spring block 2, and the common The terminal 14B is provided.

The fixed portion 8C of the contact spring block 2 is fixed to the fixed piece 14 of the body block 4 by laser welding or the like, and the movable contact 8B of the contact spring block 2 and the body block 4 are fixed via the fixed portion 8C and the fixed piece 14. The common contact terminal 14B of is in a state of being electrically conducted.

The polar electromagnet block 3 is inserted and fixed in the body block 4, the contact spring block 2 is arranged on the rectangular permanent magnet 10 of the polar electromagnet block 3, and the fixed portion 8C of the contact spring block 2 is fixed. Can be assembled in one direction by fixing it to the fixing piece 14 of the body block 4 by laser welding or the like, and is covered with the cover 5 to form the rotary fulcrum type polarized relay 1 shown in FIG.

Stoppers 5A are provided on both sides of the cover 5 so as to face the ends 6A and 6B of the armature 6 at a predetermined distance do, and within the elastic deformation range of the contact spring block 2 even when an impact in the A direction is applied. Therefore, a stable rotary fulcrum type polarized relay 1 with little fluctuation in operating characteristics (for example, impression, open-circuit voltage characteristic) is configured.

Since the rotary fulcrum type polarized relay 1 thus assembled in one direction has the rectangular permanent magnets 10 biased toward the magnetic pole 12a side and constitutes a single stable relay, it has a polarized electromagnet. In a non-excited state in which power is not applied to the coil 12A of the block 3, the armature 6 of the contact spring block 2 is in a state where the end 6A is in contact with the magnetic pole 12a due to the magnetizing action of the rectangular permanent magnet 10. Shape Permanent magnet 10-Armor 6-End 6A of armature 6-Magnetic pole 12a-Flat yoke 11-Rectangular permanent magnet 10 A magnetic circuit for generating magnetic flux is formed by the loop, and the end of armature 6 is formed. 6A keeps contact with the magnetic pole 12a and maintains a stable state (single stable).

In the monostable state, the movable contact 8B arranged on the end 6A side of the armature 6 of the contact spring block 2 comes into contact with the fixed contact 13A of the body block 4 and, as a result, the fixed contact of the body block 4. The terminal 13B and the common contact terminal 14B form an electrically conductive state.

On the other hand, in the excited state in which the coil 12A of the polar electromagnet block 3 is applied with a power source having a preset polarity, the polar electromagnet block 3 forms an electromagnet, and the armature 6 shown in FIG. Rotating with the center in the longitudinal direction as a fulcrum, the end 6A of the armature 6 separates from the magnetic pole 12a, the end 6B of the armature 6 contacts the magnetic pole 12b, and the iron core 12B-flat plate yoke 11 (magnetic resistance adjustment 11B) -rectangular permanent magnet 10-armature 6-end 6B of armature 6B-magnetic pole 12b-iron core 12B forms a magnetic circuit for generating magnetic flux in the loop, and the end 6B of the armature 6 is a magnetic pole. 12b, and this stable state is maintained as long as power is applied to the coil 12A.

In this state, the movable contact 8B arranged on the end 6A side of the armature 6 of the contact spring block 2 is separated from the fixed contact 13A of the body block 4 and arranged on the end 6B side of the armature 6. The movable contact 8B contacts the fixed contact 15A of the body block 4, and as a result, the fixed contact terminal 13B of the body block 4 and the common contact terminal 14B are electrically insulated (break state), and the fixed contact terminal 15B and the common contact terminal 15B. 14B forms an electrically conductive state (make state).

From this state, when the power source applied to the coil 12A of the polarized electromagnet block 3 is removed, the armature 6 reverses and returns to the initial non-excitation state, and the fixed contact terminal 13B of the body block 4 and the common contact The terminal 14B returns to a stable state where it forms an electrical conduction state.

Although the rotary fulcrum type polarized relay 1 has been described as a single stable type, as described above, only the concave portion 11A symmetrical to the center (rotation axis) is formed in the flat yoke 11 of the polarized electromagnet block 3. By providing, for example, in the non-excited state, the fixed contact terminal 13B of the body block 4 and the common contact terminal 14B form an electrically conductive state, and in the excited state, the fixed contact terminal 15B and the common contact terminal 14B electrically conduct. It is also possible to construct a latching (bistable) type relay that maintains the same state even when the state is formed and the non-excitation state is generated from this state.

[0032]

[Effect of device]

 As described above, in the rotary fulcrum type polarized relay 1 according to the present invention, the cover is provided with the stopper to prevent the spring block from being deformed by the impact, so that the excitement and opening characteristics of the relay should be kept within the specified range. You can

In addition, in the rotary fulcrum type polarized relay 1 according to the present invention, a stopper is formed integrally with the cover, and both ends of the armature are opposed to each other at a predetermined interval to absorb an impact force and to be a spring block. Since the deformation of can be suppressed within the elastic deformation range, stable relay operation can be guaranteed.

Therefore, it is possible to provide the rotation fulcrum type polarized relay 1 which has a simple structure, is easy to assemble, and is highly resistant to impact.

[Brief description of drawings]

FIG. 1 is a block diagram of a cover of a rotary fulcrum type polarized relay according to the present invention.

FIG. 2 is a sectional view of a rotary fulcrum type polarized relay according to the present invention.

FIG. 3 is an assembly diagram of a rotary fulcrum type polarized relay according to the present invention.

FIG. 4 is an overall configuration diagram of a rotary fulcrum type polarized relay according to the present invention.

[Explanation of symbols]

1 ... Rotating fulcrum type polarized relay, 2 ... Contact spring block, 3
... polar electromagnet block, 4 ... body block, 5 ... cover, 5A ... stopper, 6 ... armature, 6A, 6B ... end,
8 ... Movable contact block, 8A ... Contact spring, 8B ... Movable contact, 8C ... Fixed part, 9 ... Contact spring support part, 10 ... Rectangular permanent magnet, 11 ... Flat plate yoke, 11A ... Recessed part, 11B ...
Magnetic resistance adjusting section, 12 ... Coil block, 12A ... Coil, 12B ... Iron core, 12a, 12b ... Magnetic pole, 13A, 1
5A ... Fixed contact, 13B, 15B ... Fixed contact terminal, 14
... fixing piece, 14B ... common terminal, 16A, 16B ... power supply terminal.

Claims (2)

[Scope of utility model registration request] 1. A coil block, in which a coil is wound around an approximately U-shaped iron core and opposite ends of which form a magnetic pole, and a flat plate which is inserted and fixed between the opposing magnetic poles to form a magnetic bypass circuit. -Shaped yoke and a polar electromagnet block, which is mounted in a recess provided in the flat yoke and is composed of rectangular permanent magnets magnetized to have polarities different from each other in the thickness direction, in contact with the rectangular permanent magnet, A contact spring block composed of an armature that rotates due to an electromagnet action of a polarized electromagnet block and comes into contact with the magnetic pole, and a movable contact, a body block that houses the polarized electromagnet block to form a case, and the body block. A rotary fulcrum type polarized relay having a cover for covering and sealing, wherein the cover is provided with a stopper for preventing deformation of the spring block. Pole relay. 2. The rotary fulcrum type polarized relay according to claim 1, wherein the stopper is formed integrally with the cover, and is opposed to both ends of the armature at a predetermined interval.