CN220456314U

CN220456314U - Multi-contact cooperative switching relay

Info

Publication number: CN220456314U
Application number: CN202321923481.4U
Authority: CN
Inventors: 汪卫华; 王卫锋
Original assignee: Zhejiang Fanhua Electronic Co ltd
Current assignee: Zhejiang Fanhua Electronic Co ltd
Priority date: 2023-07-21
Filing date: 2023-07-21
Publication date: 2024-02-06
Anticipated expiration: 2033-07-21

Abstract

The utility model discloses a multi-contact cooperative switching relay which comprises an electromagnetic driving assembly, an armature assembly, a pushing card, a reset reed, a plurality of moving sheets and static sheets which are arranged in pairs, wherein the armature assembly and the reset reed respectively drive the pushing card to linearly move and reset, and the movable ends of all the moving sheets are sequentially fixed on the pushing card along the moving direction of the pushing card and synchronously move with the pushing card. According to the utility model, the movable ends of the plurality of moving plates are fixed along the movement direction of the pushing card, so that the requirement on the synchronism of the movement of each moving plate is reduced, the processing and assembling precision of products can be reduced, and the cost is reduced; the contact sets are separated, the interference between the contact sets is small, the moving plates are fixed through the pushing card and simultaneously act or reset, and when the bonding fault occurs between a single movable contact and a fixed contact, the other contact sets can be ensured to be in an open state; and the contact gap is larger, so that the reliability of the direct-push electromagnetic relay is improved, and the safety use requirement is met.

Description

Multi-contact cooperative switching relay

Technical Field

The utility model relates to the technical field of electromagnetic relays, in particular to a multi-contact cooperative switching relay.

Background

Relays are a common type of electrical switching apparatus, typically consisting of an electromagnet and contacts. When the electromagnet is electrified, the generated magnetic field attracts the contacts to be closed, so that current can be conducted through the relay; when the electromagnet is powered off, the contacts are opened and current cannot pass through the relay. The relay is widely applied to an automatic control system, can control the on-off of large current by controlling small current, and is used for realizing the functions of switching, protecting, adjusting and the like of a circuit.

With the improvement of the multi-point control requirement of the relay, the multi-point control electromagnetic relay has appeared in the market at present, and the product is basically realized by arranging a plurality of moving sheets side by side on a moving plate on the basis of the existing single-way control. The drawbacks of this type of design are: (1) Because the moving plate and the static plate are respectively arranged on a plane, the product is required to have high manufacturing and assembling precision and high production cost in order to ensure that all the moving contacts can reliably contact with the static contacts; (2) Once the moving plate or the moving plate fails, all the moving contacts and the fixed contacts may not be reliably contacted, and in some occasions, the reliability of the relay may be greatly reduced.

Disclosure of Invention

In order to overcome the defects of the conventional multipoint control electromagnetic relay, the utility model provides a multi-contact cooperative switching relay.

The technical scheme adopted by the utility model is as follows: the utility model provides a multiunit contact cooperatees switching formula relay, includes electromagnetic drive subassembly, armature subassembly, promotes card and reed that resets, still includes a plurality of moving plates and the quiet piece that set up in pairs, be provided with the movable contact on the moving plate, be provided with on the quiet piece with the stationary contact that the movable contact corresponds, armature subassembly with the reed that resets drives respectively promote card linear motion and reset, all the moving end of moving plate is followed promote the direction of motion of card and fix in proper order promote on the card, and with promote card synchronous motion.

Preferably, the electromagnetic driving assembly, the armature assembly, the pushing card, the reset spring, the moving plate and the static plate are all arranged on the base.

Preferably, a sliding groove is formed in the central axis of the pushing card, and a sliding rail is arranged on the base corresponding to the sliding groove.

Preferably, the pushing clamp is provided with a moving plate socket at two sides of the chute corresponding to the moving end of the moving plate.

Preferably, an armature socket is arranged at one end of the pushing card, which is close to the armature assembly.

Preferably, the upper end of the reset reed is connected with the push card, and the lower end is connected with the base.

Preferably, the moving plate and the static plate are respectively connected with a moving spring foot and a static spring foot which extend to the outside of the base.

Preferably, the electromagnetic driving assembly comprises a coil frame, a coil and an iron core which are integrally arranged, wherein L-shaped yokes are symmetrically arranged at two ends of the iron core; the armature assembly comprises a support, ferromagnetic blocks and permanent magnets, wherein the support is of a lever structure, the middle of the support is hinged to the base, the ferromagnetic blocks are arranged on one side, facing the yoke, of the support, the permanent magnets are arranged on the middle of the ferromagnetic blocks, the outer surfaces of the ferromagnetic blocks form magnetic pole faces, and the permanent magnets are arranged in gaps between the two yokes.

Preferably, a magnetic shielding sheet is provided on a surface of the ferromagnetic block facing the yoke.

Preferably, at least one group of normally closed structures and one group of normally open structures are arranged in the moving plate and the static plate.

The utility model has the following beneficial effects: according to the utility model, the movable ends of the movable pieces are fixed along the movement direction of the pushing card, so that the requirement on the synchronism of the actions of each movable piece is reduced, the processing and assembling precision of products can be reduced, and the cost is reduced; the contact sets are separated, the interference between the contact sets is small, the moving plates are fixed through the pushing card, the moving plates can act and reset simultaneously, and when the movable contact and the fixed contact of a single normally-open or normally-closed contact set have bonding faults, the other normally-closed or normally-open contact sets can be ensured to be in an open state; and the contact gap of the product is larger, so that the reliability of the direct-push electromagnetic relay is improved, and the safety use requirement is met.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present utility model.

Fig. 2 is an assembly schematic of an embodiment of the present utility model.

Fig. 3 is a schematic diagram of an armature assembly in accordance with an embodiment of the utility model.

Fig. 4 is a schematic diagram of a push card in an embodiment of the utility model.

An electromagnetic drive assembly 1, a coil frame 101, a coil 102, an iron core 103, a yoke 104, and a coil foot 105; armature assembly 2, bracket 201, ferromagnetic block 202, permanent magnet 203, magnetic barrier sheet 204; push card 3, chute 301, rotor slot 302, armature slot 303; resetting the reed 4; a rotor 5; a static plate 6; a movable contact 7; a stationary contact 8; a base 9, a slide rail 901; a movable spring leg 10; and a static spring leg 11.

Detailed Description

The utility model will be further described with reference to examples and drawings.

In the embodiment, as shown in fig. 1-4, the relay is a multi-group contact collaborative switching type relay, and comprises a base 9, wherein an electromagnetic driving assembly 1, an armature assembly 2, a push card 3 and a reset reed 4 are installed on the base 9, a plurality of moving plates 5 and static plates 6 which are arranged in pairs are also installed on the base 9, a movable contact 7 is arranged on the moving plates 5, a static contact 8 corresponding to the movable contact 7 is arranged on the static plates 6, the armature assembly 2 and the reset reed 4 respectively drive the push card 3 to linearly move and reset, and the movable ends of all the moving plates 5 are sequentially fixed on the push card 3 along the movement direction of the push card 3 and synchronously move with the push card 3. According to the embodiment, the movable ends of the movable pieces 5 are fixed along the movement direction of the pushing card 3, so that the requirement on the synchronization of the actions of each movable piece 5 is reduced, the processing and assembling precision of products can be reduced, and the cost is reduced; the contact sets are separated, the interference between the contact sets is small, the moving plates 5 are fixed through the pushing card 3, the moving plates can act and reset simultaneously, and when the movable contact 7 and the fixed contact 8 of a single normally open or normally closed contact set have bonding faults, the other normally closed or normally open contact sets can be ensured to be in an open state; and the contact gap of the product is larger, so that the reliability of the direct-push electromagnetic relay is improved, and the safety use requirement is met.

In the embodiment, as shown in fig. 2 and 4, a sliding groove 301 is disposed at a central axis position of the push card 3, and a sliding rail 901 is disposed on the base 9 corresponding to the sliding groove 301. The pushing card 3 is installed with the sliding rail 901 of the base 9 through the sliding groove 301, so that sliding fit with the base 9 is realized, and the pushing card has the advantages of simple structure and convenience in disassembly and assembly.

In the embodiment, as shown in fig. 2 and 4, the pushing card 3 is provided with a movable piece socket 302 at two sides of the chute 301 corresponding to the movable end of the movable piece 5. The movable plate socket 302 is used for fixing the upper end of the movable plate 5, and the position of the movable plate socket 302 is determined according to relays of different types. The movable plate socket 302 is a rectangular opening, and two opposite inner walls are provided with protruding parts, so as to play a role in clamping and fixing the movable plate 5.

In the embodiment shown in fig. 2 and 4, the end of the pusher card 3 near the armature assembly 2 is provided with an armature socket 303. The armature socket 303 is in plug-in fit with a plug-in part of the armature assembly 2 assembly, so that the push card 3 and the armature assembly 2 are linked.

In the embodiment, as shown in fig. 2, the upper end of the reset reed 4 is connected with the push card 3, and the lower end is connected with the base 9. The reset reed 4 is arranged at the middle position of the pushing card 3 in the axial direction, so that the acting force on the pushing card 3 is relatively stable and uniform, and the situation that the pushing card 3 is inclined or blocked is reduced.

In the embodiment, as shown in fig. 2, the moving plate 5 and the static plate 6 are respectively connected with a moving spring leg 10 and a static spring leg 11 extending to the outside of the base 9. The static plate 6 and the static spring leg 11 do not need frequent bending and deformation, so that the pure copper can be adopted to be made into an integral structure. The rotor 5 needs to have a certain elasticity so as to generate enough force to be attracted or broken when current flows, so that copper alloy with better elasticity and toughness is generally selected to better bear frequent bending and deformation; the movable spring pin 10 is still made of pure copper so as to ensure good electric conductivity. Therefore, the moving plate 5 and the moving spring leg 10 are two independent members, and are connected by caulking, welding, or the like.

In the embodiment, as shown in fig. 2, the electromagnetic driving assembly 1 includes a coil frame 101, a coil 102 and an iron core 103 which are integrally installed, and L-shaped yokes 104 which are symmetrically installed at both ends of the iron core 103; the armature assembly 2 comprises a bracket 201, a ferromagnetic block 202 and a permanent magnet 203, wherein the bracket 201 is in a lever structure, the middle part of the bracket 201 is hinged on the base 9, the ferromagnetic block 202 is arranged on one side of the bracket 201 facing the yoke 104, the permanent magnet 203 is arranged on the middle part of the ferromagnetic block 202, the outer surface of the ferromagnetic block 202 forms a magnetic pole surface, and the permanent magnet 203 is arranged in a gap between the two yokes 104. The permanent magnet 203 in this embodiment can provide an additional magnetic field in cooperation with the yoke 104 to enhance the magnetic force of the electromagnetic coil, so that the electromagnetic coil can be attracted or disconnected more reliably and more rapidly, and the working efficiency and reliability of the relay are improved.

In the embodiment, as shown in fig. 3, the ferromagnetic piece 202 is provided with a magnetism blocking piece 204 on the side facing the yoke 104. The direct contact of the ferromagnetic block 202 and the yoke 104 produces a loud noise, which is effectively reduced by the provision of the magnetic separator sheet 204, and the magnetic sticking phenomenon is eliminated and reduced to some extent. In addition, the magnetism isolating sheet 204 can also play a role in protecting against excessive wear between the ferromagnetic block 202 and the yoke 104, and improving the service life.

In the embodiment, as shown in fig. 1 and 2, at least one set of normally closed structures and one set of normally open structures are arranged in the moving plate 5 and the static plate 6. In this embodiment, six sets of moving plates 5 and static plates 6 are provided, as shown in fig. 2, in which one set is a normally closed contact and the other set is a normally open contact. Of course, the number of normally closed contacts and normally open contacts can be adjusted by replacing the push card 3, the corresponding moving sheet 5 and the corresponding static sheet 6 according to the requirements of the use scene, so that the product has good applicability and universality.

It is apparent that the above examples of the present utility model are merely illustrative of the present utility model and are not limiting of the embodiments of the present utility model. Other obvious variations or modifications which are extended by the spirit of the present utility model are within the scope of the present utility model.

Claims

1. The utility model provides a multiunit contact cooperatees switching formula relay, its characterized in that, includes electromagnetic drive subassembly (1), armature subassembly (2), promotes card (3) and reed (4) that resets, still includes a plurality of moving plate (5) and stationary blade (6) that set up in pairs, be provided with moving contact (7) on moving plate (5), be provided with on stationary blade (6) with moving contact (7) corresponding stationary contact (8), armature subassembly (2) with reed (4) that resets drive respectively promote card (3) linear motion and reset, all moving end of moving plate (5) are followed the direction of motion of promotion card (3) is fixed in proper order promote card (3) on, and with promote card (3) synchronous motion.

2. The multi-contact cooperative switching relay according to claim 1, further comprising a base (9), wherein the electromagnetic driving assembly (1), the armature assembly (2), the push card (3), the reset spring (4), the moving plate (5) and the static plate (6) are all mounted on the base (9).

3. The multi-contact cooperative switching relay according to claim 2, wherein a sliding groove (301) is arranged at the central axis position of the push card (3), and a sliding rail (901) is arranged on the base (9) corresponding to the sliding groove (301).

4. A relay according to claim 3, wherein the push card (3) is provided with a movable piece socket (302) at both sides of the chute (301) corresponding to the movable end of the movable piece (5).

5. A multi-contact cooperative switching relay according to claim 3, characterized in that the push card (3) is provided with an armature socket (303) at an end close to the armature assembly (2).

6. A multi-contact cooperative switching relay according to claim 3, wherein the upper end of the reset reed (4) is connected with the push card (3), and the lower end is connected with the base (9).

7. The multi-contact cooperative switching relay according to claim 2, wherein the moving plate (5) and the static plate (6) are respectively connected with a moving spring leg (10) and a static spring leg (11) which extend to the outside of the base (9).

8. The multi-contact cooperative switching relay according to claim 2, wherein the electromagnetic driving assembly (1) comprises a coil frame (101), a coil (102) and an iron core (103) which are integrally installed, wherein both ends of the iron core (103) are symmetrically provided with L-shaped yokes (104); the armature assembly (2) comprises a support (201), a ferromagnetic block (202) and a permanent magnet (203), wherein the support (201) is of a lever structure, the middle of the support (201) is hinged to the base (9), the ferromagnetic block (202) is installed on one side, facing the yoke (104), of the support (201), the permanent magnet (203) is installed in the middle of the ferromagnetic block (202), a magnetic pole face is formed on the outer surface of the ferromagnetic block (202), and the permanent magnet (203) is arranged in a gap between the two yokes (104).

9. The multi-contact cooperative switching relay according to claim 8, wherein a side of the ferromagnetic block (202) facing the yoke (104) is provided with a magnetism blocking sheet (204).

10. The multi-contact cooperative switching relay according to claim 1, wherein at least one of the moving plate (5) and the stationary plate (6) has a normally closed structure and a normally open structure.