CN111863536A

CN111863536A - Driving structure of micro-miniature sealed electromagnetic relay

Info

Publication number: CN111863536A
Application number: CN202010770589.9A
Authority: CN
Inventors: 邹泽方
Original assignee: GUIZHOU TIANYI ELECTRICAL CO Ltd
Current assignee: GUIZHOU TIANYI ELECTRICAL CO Ltd
Priority date: 2020-08-04
Filing date: 2020-08-04
Publication date: 2020-10-30

Abstract

A driving structure of a microminiature sealing electromagnetic relay comprises a rear bracket, an electromagnet assembly, a front bracket, an armature assembly, a positioning block and an insulating gasket; the armature component consists of a long iron yoke, a short iron yoke and a rectangular armature; the long iron yoke, the short iron yoke and the rectangular armature are all processed by 1J50 iron-nickel soft magnetic alloy strips, the thickness is 1.1, and the Hc of the test piece is not more than 9.6A/m after annealing. The invention overcomes the technical problems of special structure, difficult processing, poor fit assembly with the iron yoke and difficult adjustment of the z-shaped armature and the rhombic armature; the design of the rectangular armature, the right-angle magnetic pole and the circular iron core is adopted, the size of the assembly is small, parts are easy to process, the assembly is simple and convenient, the sealing adjustment and the parameter adjustment are convenient, and the technical performance and the action reliability of an electromagnetic relay product are met; the rectangular armature is adopted, so that the processing is convenient, the small cylinder on the armature is easy to machine, the armature adopts a rectangular structure, the armature is well sealed with the iron yoke, and the assembly is easy to adjust.

Description

Driving structure of micro-miniature sealed electromagnetic relay

Technical Field

The invention relates to a driving structure of a miniature sealed electromagnetic relay, belonging to the technical field of manufacturing and assembling of miniature sealed electromagnetic relays.

Background

A relay product is a two-path switching subminiature balanced armature electromagnetic relay, the coil rated voltage is 27V DC, and the contact load resistance is 2A 28V DC.

The electromagnetic relay mainly comprises a driving assembly, a contact base plate assembly and an outer cover, wherein the driving assembly is a very important assembly in the miniature sealed relay, the driving assembly comprises an electromagnet assembly and a plurality of supporting structures (such as supports), and the design quality and the assembly quality of the assembly directly determine the technical performance and the action reliability of the whole product, so that higher technical requirements are provided for the detailed design of the electromagnet assembly.

The electromagnetic driving part of the product comprises an electromagnet assembly, an armature assembly, a bracket, a positioning block and the like.

The armature of the prior relay driving assembly mainly has the following two structural forms (see fig. 1 and 2):

the Z-shaped armature and the rhombic armature are adopted to be specially shaped, the processing is difficult, the close fit assembly with the iron yoke is poor, and the adjustment is difficult.

Disclosure of Invention

The invention aims to solve the problems existing in the prior art that: the armature structure is special-shaped, the processing is difficult, the close fit assembly with the iron yoke is poor, and the adjustment is difficult.

In order to solve the technical problems, the invention adopts the following technical scheme:

a driving structure of a microminiature sealing electromagnetic relay comprises a rear bracket 1, an electromagnet assembly 2, a front bracket 3,

The armature component 4, the positioning block 5 and the insulating washer 6; the method is characterized in that:

the armature component 4 consists of a long iron yoke 4.1, a short iron yoke 4.2 and a rectangular armature 4.3;

the long iron yoke 4.1 and the short iron yoke 4.2 are both made of 1J50 iron-nickel soft magnetic alloy strips, the thickness is 1.1, and the Hc of a test piece is not more than 9.6A/m after annealing;

the rectangular armature 4.3 is a 1J50 iron-nickel soft magnetic alloy strip with the thickness of 1.1, and Hc of the test piece is not more than 9.6A/m after annealing.

The invention has the beneficial effects that:

1. the invention overcomes the technical problems of special structure, difficult processing, poor fit assembly with the iron yoke and difficult adjustment of the z-shaped armature and the rhombic armature.

2. The invention adopts the design of the rectangular armature, the right-angle magnetic pole and the round iron core, has small assembly volume, easy part processing, simple and convenient assembly, convenient sealing adjustment and parameter adjustment, and meets the technical performance and the action reliability of electromagnetic relay products.

3. The armature adopts a rectangular structure, is well sealed with the iron yoke and is easy to assemble and adjust.

Drawings

Fig. 1 is a schematic diagram of a z-type armature structure of a conventional relay driving assembly.

Fig. 2 is a schematic diagram of a diamond armature structure of a conventional relay driving assembly.

Fig. 3 is a schematic structural diagram of the present invention.

Fig. 4 is a side view of fig. 3.

Fig. 5 is a view taken along direction a of fig. 3.

Fig. 6 is a schematic structural view of a long iron yoke according to the present invention.

Fig. 7 is a side view of fig. 6.

Fig. 8 is a schematic structural view of a short iron yoke according to the present invention.

Fig. 9 is a side view of fig. 8.

Fig. 10 is a schematic structural view of a rectangular armature of the present invention.

Fig. 11 is a bottom view of fig. 10.

FIG. 12 is a schematic diagram of the electromagnetic force calculation of the present invention.

In the figure: 1-rear support, 2-electromagnet component, 3-front support, 4-armature component, 4.1-long iron yoke, 4.2-short iron yoke, 4.3-rectangular armature, 5-positioning block and 6-insulating washer 6.

Detailed Description

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

As shown in fig. 3, 4 and 5, a driving structure of a micro-miniature sealed electromagnetic relay includes a rear bracket 1, an electromagnet assembly 2, a front bracket 3, an armature assembly 4, a positioning block 5 and an insulating washer 6;

as shown in fig. 6, 7, 8 and 9, the long iron yoke 4.1 and the short iron yoke 4.2 are both processed by 1J50 iron-nickel soft magnetic alloy strips, the thickness is 1.1, and the Hc of the test piece is less than or equal to 9.6A/m after the annealing of the parts; the main processing technology comprises the following steps: bending and punching;

as shown in fig. 10 and 11, the rectangular armature 4.3 is 1J50 iron-nickel soft magnetic alloy strip with the thickness of 1.1, and the Hc of the test piece is not more than 9.6A/m after the part is annealed; the main processing technology comprises the following steps: blanking, grinding, turning and heat treatment.

The electromagnetic driving structure is adopted, when the coil is electrified, the rectangular armature 4.3 is driven to rotate by the electromagnetic force, the push rod component on the rectangular armature 4.3 is driven to move, and the movable spring piece is pushed to be communicated with the static spring piece; when the coil is powered off, the push rod moves in the opposite direction by the counterforce of the return spring piece, and the movable spring piece is disconnected with the static spring piece.

Before the coil is electrified, the magnetic gap of the 4.3 initial position of the coil power-off rectangular armature is 4-6 degrees;

the contact force of the end of the rectangular armature 4.3 after actuation is designed to be 1N, and the contact force of the end of the rectangular armature 4.3 after actuation is ensured to be more than or equal to 1N.

The electromagnetic attraction of the invention is calculated as follows:

the rated coil magnetic potential of the product is IW ═ U/R × W ═ 27/700 × 5200 ═ 200 (ampere turns), the number of turns of the coil is 5200 turns, neglecting iron and non-working air gap magnetic resistance, the magnetic pressure drop U ═ 200/2 ═ 100, α ═ 5 ° -0.087 radian, a ═ 3.7mm, b ═ 3.5mm, R1 ═ 3.8mm, and R2 ═ 7.5 mm.

The electromagnetic moments generated by the two air gaps are:

Md＝2×1/2u²×b/α²ln R2/ R1＝100²×1.25×10^-6×3.5×10^-3/0.087²×ln7.5/3.8＝0.45×10^-2(n.m), the touch force F is 2 × 0.45 × 10^-2/7.5×10^-31.2(N), and meets the design requirement that the touch force is more than or equal to 1N.

Claims

1. A driving structure of a micro-miniature sealed electromagnetic relay comprises a rear bracket (1), an electromagnet assembly (2), a front bracket (3), an armature assembly (4), a positioning block (5) and an insulating gasket (6); the method is characterized in that:

the armature component (4) consists of a long iron yoke (4.1), a short iron yoke (4.2) and a rectangular armature (4.3);

the long iron yoke (4.1) and the short iron yoke (4.2) are both processed by 1J50 iron-nickel soft magnetic alloy strips, the thickness is 1.1, and the Hc of the test piece is not more than 9.6A/m after annealing;

the rectangular armature (4.3) is a 1J50 iron-nickel soft magnetic alloy strip with the thickness of 1.1, and Hc of the test piece is not more than 9.6A/m after annealing.