CN212136358U

CN212136358U - Electromagnetic relay

Info

Publication number: CN212136358U
Application number: CN202020963478.5U
Authority: CN
Inventors: 孙文化; 陈辉; 陈浩文
Original assignee: Dewei Electric Technology Shenzhen Co ltd
Current assignee: Dewei Electric Technology Shenzhen Co ltd
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2020-12-11
Anticipated expiration: 2030-05-29

Abstract

An electromagnetic relay relates to the technical field of circuit breakers. It comprises the following steps: a coil bobbin; a coil winding; the spring is assembled in the inner cavity of the coil framework; the plugging block is assembled at one end of the inner cavity of the coil framework (1) and is provided with a through hole in the axial direction; the ejector pins sequentially penetrate through the through hole and the spring; the limiting block is arranged on the thimble and close to one end of the blocking block; the movable magnet is fixedly assembled on the thimble and close to one end of the spring, and part of the movable magnet is accommodated in the inner cavity; when the coil winding is electrified, the movable magnet moves towards one side of the blocking block to drive the thimble to push the tripping mechanism; when the coil winding is powered off, the movable magnet resets under the action of the spring and the limiting block. By adopting the technical scheme, the device has the advantages of high sensitivity, simple structure and convenience in assembly.

Description

Electromagnetic relay

Technical Field

The utility model relates to a residual current circuit breaker technical field, concretely relates to electromagnetic relay.

Background

Electric leakage breaker: a switch which can automatically act when the leakage current in the circuit exceeds a preset value. The conventional leakage circuit breaker is classified into a voltage type and a current type, and the current type is classified into an electromagnetic type and an electronic type. The earth leakage circuit breaker is used for preventing human body from electric shock and is selected according to different requirements of direct contact and indirect contact electric shock protection.

Most of the existing electronic leakage circuit breakers in China are electronic leakage circuit breakers, the type of leakage circuit breakers has a direct relation with the voltage of an auxiliary power supply, leakage action current needs to be generated under the condition of low voltage (50V-), and the leakage circuit breakers can also act. Therefore, the electromagnetic system of the tripping device of the leakage circuit breaker has high requirements, and the electromagnetic system of the leakage circuit breaker is required to rapidly drive the tripping mechanism to trip. However, the electromagnetic system of the existing leakage release has poor sensitivity and slow release speed, and therefore, the improvement is needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art's defect and not enough, provide an electromagnetic relay, have the advantage that sensitivity is high, the structure is succinct, the assembly of being convenient for.

In order to achieve the above object, the utility model adopts the following technical scheme: an electromagnetic relay comprising: a coil bobbin; a coil winding; the spring is assembled in the inner cavity of the coil framework; the plugging block is assembled at one end of the inner cavity of the coil framework and is provided with a through hole in the axial direction; the ejector pins sequentially penetrate through the through hole and the spring; the limiting block is arranged on the thimble and close to one end of the blocking block; the movable magnet is fixedly assembled on the thimble and close to one end of the spring, and part of the movable magnet is accommodated in the inner cavity; when the coil winding is electrified, the movable magnet moves towards one side of the blocking block to drive the thimble to push the tripping mechanism; when the coil winding is powered off, the movable magnet resets under the action of the spring and the limiting block.

And pins are fixedly assembled on the coil framework, and two ends of the coil winding are assembled on the pins.

The ejector pin is made of brass.

The blocking block (3) is annular.

After the technical scheme is adopted, the utility model discloses beneficial effect does: through the moving magnet of part assembly in coil skeleton inner chamber one end, coil winding internal magnetic field to attract moving magnet, under the superimposed magnetic field of moving magnet and circular telegram coil winding, moving magnet acts fast, and moves to sprue one end, thereby drives the thimble and stretches out, pushes away and makes tripping device move and trip. In addition, through assembling in the pin on the coil skeleton, changed the connected mode between original wire and the coil winding for it is more convenient to connect, and the structure is succinct, has the advantage that sensitivity is high, the structure is succinct, the assembly of being convenient for.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a cross-sectional view taken along line a-a of fig. 1.

Description of reference numerals: 1. a coil bobbin; 2. a coil winding; 3. blocking; 4. a spring; 5. a thimble; 6. a limiting block; 7. a moving magnet; 8. and (7) a pin.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment as required without making a contribution, but all the embodiments are protected by the patent law within the scope of the claims of the present invention.

This embodiment relates to for realizing above-mentioned purpose, the utility model discloses a technical scheme is: an electromagnetic relay, which is applied to the technical field of relays, as shown in fig. 1, comprises: the coil comprises a coil framework 1, a coil winding 2, a blocking block 3, a spring 4, a thimble 5, a limiting block 6 and a moving magnet 7.

Wherein, coil winding 2 is around establishing on coil skeleton 1, is equipped with the communicating appearance chamber of axial in the coil skeleton 1, and sprue 3 is the column, and sprue 3 fixed assembly is in the one end that holds the chamber. A through hole for the thimble 5 to penetrate through is arranged in the axial direction of the block 3; spring 4 holding is in the inner chamber, and thimble 5 passes through the through-hole in proper order and spring 4 welds on moving magnet 7, and thimble part protrusion coil skeleton 1, and is equipped with stopper 6 on the outstanding part, and initial condition, stopper 6 butt under the effect of spring 4 on blockking block 3 with the length of injecing thimble 5 entering appearance intracavity. Preferably, the stopper 6 is annular. The moving magnet 7 is partially accommodated in the inner cavity and partially protrudes out of the coil framework 1. When the coil is electrified, the moving magnet 7 moves towards one side of the blocking block 3 to drive the thimble 5 to enable the tripping mechanism to act to trip; when the coil is powered off, the moving magnet 7 is reset under the action of the spring 4 and the limiting block 6.

For making electromagnetic relay's assembly more convenient, fixed assembly has pin 8 on coil skeleton 1, and coil winding 2's both ends are around locating on pin 8 to through welded fastening, when the coil needs connecting wire, directly with the power cord around establishing and weld on pin 8 alright, the operation is very simple and convenient, and the structure is succinct. In order to improve the durability of the thimble 5, the thimble 5 is made of brass. The number of turns of the coil winding 2 is 1000.

The working principle of the utility model is as follows: when current flows through the coil winding 2, the magnetic field in the coil winding 2 attracts the moving magnet 7, and under the superimposed magnetic field of the moving magnet 7 and the electrified coil winding 2, the moving magnet 7 rapidly moves towards one end of the blocking block 3, so that the ejector pin 5 is driven to extend out, and the tripping mechanism is pushed to trip. After the coil winding 2 is powered off, the magnetic field around the coil winding disappears, the moving magnet 7 resets under the action of the spring 4 and the limiting block 6, and the magnetic coil winding has the advantages of high sensitivity, simple structure and convenience in assembly.

The above description is only for the purpose of illustration and not limitation, and other modifications or equivalent replacements made by those skilled in the art to the technical solution of the present invention should be covered by the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. An electromagnetic relay comprising: coil skeleton (1), coil winding (2) and holding in spring (4) of coil skeleton (1) inner chamber, its characterized in that, electromagnetic relay still includes:

the plugging block (3) is assembled at one end of the inner cavity of the coil framework (1) and is provided with a through hole in the axial direction;

the ejector pins sequentially penetrate through the through hole and the spring (4);

a limiting block (6) assembled on the thimble (5) and close to one end of the blocking block (3); and the number of the first and second groups,

a moving magnet (7) which is assembled on the thimble (5) and close to one end of the spring (4) and is partially accommodated in the inner cavity;

when the coil winding (2) is electrified, the moving magnet (7) moves towards one side of the blocking block (3) to drive the thimble (5) to push the tripping mechanism; when the coil winding (2) is powered off, the moving magnet (7) resets under the action of the spring (4) and the limiting block (6).

2. The electromagnetic relay according to claim 1, characterized in that the coil bobbin (1) is fixedly fitted with pins (8), and both ends of the coil winding (2) are fitted with the pins (8).

3. The electromagnetic relay according to claim 1 or 2, characterized in that the ejector pin (5) is made of brass.

4. An electromagnetic relay according to claim 3, characterized in that the block (3) is ring-shaped.