JP3004016U - Rotating fulcrum type polarized relay - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a highly reliable rotary fulcrum type polarized relay that is easy to assemble and follow contacts. [Composition] Contact spring block 2 and polarized electromagnet block 3
The fulcrum type polarized relay 1 in which the body block 4 provided with the side wall upper surface 4A formed to be lower than the bottom of the fixed contact 15A (and 13A) by a predetermined distance d is assembled in one direction and covered with the 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, and particularly to a rotary fulcrum type polarized relay in which follow adjustment of movable contacts is easy.

[0002]

[Prior art]

 As disclosed in Japanese Unexamined Patent Publication No. Hei 5-325764, a conventional rotary fulcrum type polarized relay has two recessed grooves for jig pressing on both side surfaces of a molded portion of an armature block and a base side wall. A jig insertion recess corresponding to the jig pressing recess is provided in the upper part, and when the armature block is assembled into the relay, the jig is inserted from the outside through the jig insertion recess and the jig pressing recess is inserted. It is known that the armature block is set in position by pressing it to four and fixing it at the same time.

In the conventional rotary fulcrum type polarized relay configured as described above, the armature block is arranged and fixed at a regular position with respect to the base by setting the position of the armature block with a jig. It is said that the armature block does not rub against the inner surface of the base and can swing smoothly.

[0004]

[Problems to be solved by the device]

 The conventional rotary fulcrum type polarized relay has a jig insertion recess for inserting a position setting jig in the upper wall of the base side to set the position of the armature block. Not only setting, but when inserting the adjustment jig from the outside of the base for the purpose of adjusting the movable contact position after relay assembly, etc., the inside cannot be observed if the adjustment jig is inserted into the jig insertion recess. However, there is a problem that adjustment is not easy.

Further, as the rotary fulcrum type polarized relay is miniaturized, there is a problem that the jig insertion concave portion becomes small and the adjustment work becomes difficult.

Further, when further miniaturizing the rotary fulcrum type polarized relay, the distance between the movable contact and the fixed contact is narrowed, the insulation distance around the contact is shortened, and the breakdown voltage between the contacts is reduced. There is a problem that adjustment of contact follow becomes extremely difficult.

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 has a high withstand voltage between contacts and is easy to adjust contact follow.

[0008]

[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 upper surface of the side wall of the body block is formed lower than the fixed contact.

[0009]

[Action]

 In this invention, the rotary fulcrum type polarized relay has the upper surface of the side wall of the body block formed lower than the fixed contact, so that the contact particles are attached to the side wall by the spark between the movable contact of the contact spring block and the fixed contact of the body block. As a result, it is possible to prevent a decrease in the dielectric strength voltage between the contacts that occurs.

Further, in the rotary fulcrum type polarized relay according to the present invention, since the movable contact point and the fixed contact can be seen from the outside of the body block, the contact follow can be adjusted by inserting the adjusting jig.

[0011]

【Example】

 An embodiment of the present invention will be described below with reference to the accompanying drawings. 1 to 3 show the configuration of a rotary fulcrum type polarized relay according to the present invention. FIG. 1 is a block diagram of a body block of a rotary fulcrum type polarized relay according to the present invention, FIG. 2 is an assembly diagram 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. The whole block diagram of a relay is shown.

FIG. 1 shows a state in which the polar electromagnet block 3 is inserted and fixed in the body block 4, and the contact spring block 2 is mounted on the polar electromagnet block 3. In the state where the contact spring block 2 is fixed to the body block 4, the four sets of contact springs 8A arranged at both ends in the longitudinal direction of the contact spring block 2 have movable contacts 8B provided at the tips at the four corners of the body block 4. It is configured to electrically switch connection with the fixed contact 15A (and fixed contact 13A in FIG. 2) provided.

The side wall upper surface 4A provided around the fixed contacts 15A (and 13A) is formed so that the longitudinal direction and the width direction of the body block 4 are lower than the bottom of the fixed contacts 15A (and 13A) by a predetermined distance d. 3, the movable contact 8B and the fixed contact 15A (and 13A) can be observed from the outside of the body block 4 with the cover 5 in FIG. 3 removed.

Since the movable contact 8B and the fixed contact 15A (and 13A) are formed only by a space, and the withstand voltage between the contacts is determined by the potential difference between the contacts and the spatial distance, the sparks between the contacts cause the contact particles to separate. Even if the particles are scattered around, the arrangement is such that the withstand voltage between contacts is not affected.

Further, the contact adjustment jig 17 is inserted from the outside of the body block 4 from the longitudinal direction of the body block 4 as shown in FIG. 1, and the simple operation of adjusting the contact spring 8A while observing from the width direction is performed. Therefore, it is possible to suppress the variation of the contact follower due to the variation of the contact spring 8A and the like, and obtain an appropriate contact follow.

As described above, since the upper surface 4A of the side wall of the body block 4 is formed at a position lower than the bottom of the fixed contact 15A (and 13A), the withstand voltage between the contacts can be improved. Further, since the contact follow-up is adjusted by using the contact adjusting jig 17 and the touching voltage and open-circuit voltage characteristics of the rotary fulcrum type polarized relay 1 can be optimally set, stable relay operation can be secured.

Next, the configuration of the rotary fulcrum type polarized relay will be described based on the assembly drawing shown in FIG. The rotary fulcrum type polarized relay 1 comprises a contact spring block 2, a polarized electromagnet block 3, a body block 4 and a cover 5 shown in FIG. 3, 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 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 the case of a single-stable type polar electromagnet, and the recess 11A is formed asymmetrically with respect to the center of the flat yoke 11 and the magnetic resistance is increased on the opposite side of the recess 11A. 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 flat plate yoke 11 between the opposing magnetic poles 12a and 12b of the iron core 12B, the flat plate 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 has 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 makes contact with four movable contacts 8A of contact spring block 2 to form a break contact of two circuits, and fixed contact 15A and fixed contact 13A that forms 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 fixing 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 fixing portion 8C and the fixing 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 8 C 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 the cover 5 is covered to form the rotary fulcrum type polarized relay 1 shown in FIG.

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 to form a single stable type relay. 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 12 A 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 is in the longitudinal direction. Rotating with the center 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 adjusting portion 11B) -Rectangular permanent magnet 10-armature 6-end 6B of the armature 6-magnet pole 12b-iron core 12B forms a magnetic circuit for generating magnetic flux in the loop, and the end 6B of the armature 6 serves as the magnetic pole 12b. Contact and maintain this stable state 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 plate 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.

[0034]

[Effect of device]

 As described above, in the rotary fulcrum type polarized relay 1 according to the present invention, the upper surface of the side wall portion of the body block is formed lower than the fixed contact, and the insulation between the movable contact of the contact spring block and the fixed contact of the body block is isolated. Since the breakdown voltage can be maintained at the initial value, it is possible to obtain stable operating characteristics with little change over time and being unaffected by the operating frequency.

Further, in the rotary fulcrum type polarized relay 1 according to the present invention, the movable contact and the fixed contact can be seen from the outside of the body block, and the contact follow can be easily adjusted by inserting the adjusting jig. , It is possible to set the excitement and opening characteristics of the relay to the optimum.

Therefore, it is possible to provide a highly reliable rotary fulcrum type polarized relay which is easy to assemble and adjust the contact follow.

[Brief description of drawings]

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

FIG. 2 is an assembly drawing of a rotary fulcrum type polarized relay according to the present invention.

FIG. 3 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
... polarized electromagnet block, 4 ... body block, 4A ... side wall upper surface, 5 ... cover, 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, 11
B ... Magnetic resistance adjusting unit, 12 ... Coil block, 12A ...
Coil, 12B ... Iron core, 12a, 12b ... Magnetic pole, 13
A, 15A ... Fixed contact, 13B, 15B ... Fixed contact terminal, 14 ... Fixing piece, 14B ... Common terminal, 16A, 16B
… Power supply terminal, 17… Contact adjustment jig.

Claims (1)

[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 upper surface of the side wall of the body block is formed lower than a fixed contact. Over.