CN201096009Y

CN201096009Y - Double speed electromagnetic fan clutch

Info

Publication number: CN201096009Y
Application number: CNU2007200267840U
Authority: CN
Inventors: 李磊
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-08-24
Filing date: 2007-08-24
Publication date: 2008-08-06
Anticipated expiration: 2017-08-24

Abstract

The utility model belongs to the technical field of vehicle cooling system, in particular relates to a clutch of a double-speed electromagnetic fan. The clutch is characterized in that a soft iron disc which is used for fixing a magnetic fixed disc is arranged at the lower end face of a fan fixed disc. A permanent magnet in the magnetic fixed disc is corresponding with a soft iron embedded in a heat radiation disc. A circle of magnetism isolating through grooves is arranged on a pull-in disc on the corresponding end face of another pull-in disc and a driving disc, and the end face of the driving disc is provided with two circles of magnetism isolating through grooves. The clutch has the advantages of simple structure, big pull-in torque, small recoil force and high reliability.

Description

The double speed electromagnetic fan clutch

Technical field: the utility model belongs to the automobile cooling system technical field, is specifically related to a kind of double speed electromagnetic fan clutch.

Background technique: at present, electromagnetic fan clutch all is a single speed, has only a circle magnet isolation tank on its used drive plate, and the adhesive moment of torsion that this structure produces is little; And because its single speed running, when drive plate engages with the adhesive dish, big to the recoil force of belt and engine spindle, thereby do not satisfy the needs of high power engine fan work, therefore on high-powered automobiles, the use of electromagnetic fan clutch still belongs to a blank.

Summary of the invention: the purpose of this utility model provides a kind of simple in structure, and the adhesive moment of torsion is big, and recoil force is little, the double speed electromagnetic fan clutch that reliability is high.

The technical solution of the utility model is: a kind of double speed electromagnetic fan clutch, and establish drive plate in main shaft one side and be connected with heat dissipation plate; Electromagnetic core, housing and bearing are established in the drive plate inboard; Establish bearings on the main shaft in the drive plate outside and connect fan fixed disk; Establishing soft iron dish support and connection magnet on the fan fixed disk lower end surface coils admittedly; Establish spring sheet support and connection adhesive dish below the soft iron dish, the adhesive dish is positioned on the end face of drive plate corresponding with the electromagnetic core position of drive plate inboard; It is characterized in that the magnet fixed disc fixed permanent magnet, permanent magnet is corresponding with the soft iron that is embedded in the heat dissipation plate; Establish a circle every the saturating groove of magnetic on the adhesive dish of adhesive dish and the corresponding end face of drive plate, the drive plate end face is provided with two circles every the saturating groove of magnetic.

Owing to adopt technique scheme, the method of two-stage transmission, flexibly connecting when realizing fan starting and low-speed running, the requirement of required big adhesive moment of torsion when running up, satisfied the needs of high power engine fan work, had simple in structurely, the adhesive moment of torsion is big, recoil force is little, the advantage that reliability is high.

Description of drawings: technical solutions of the utility model are described further below in conjunction with accompanying drawing and concrete enforcement.Accompanying drawing is a structural representation of the present utility model.

Embodiment: with reference to the accompanying drawings, a kind of double speed electromagnetic fan clutch is established drive plate 14 in main shaft 16 1 sides and is connected with heat dissipation plate 1; Electromagnetic core 18 housings 17 and bearing 15 are established in drive plate 14 inboards; Establish bearing 8 support and connection fan fixed disk 7 on the main shaft 16 in drive plate 14 outsides; Establish soft iron dish 5 support and connection magnet on fan fixed disk 7 lower end surfaces and coil 3 admittedly; Establish spring sheet 6 support and connection adhesive dishes 10 below the soft iron dish 5, adhesive dish 10 is positioned on the end face of drive plate 14 corresponding with electromagnetic core 18 positions of drive plate 14 inboards; It is characterized in that magnet fixed disc 3 fixed permanent magnets 4, permanent magnet 4 is corresponding with soft iron 2 in being embedded in heat dissipation plate 1; Establish a circle every the saturating groove 11 of magnetic on the adhesive dish 10 of adhesive dish 10 and drive plate 14 corresponding end faces, drive plate 14 end faces are provided with two circles every the saturating groove 12,13 of magnetic.。

During work, motor drives main shaft 16 rotations, and main shaft 16 drives drive plate 14, heat dissipation plate 1 rotation by woodruff key 9; Be embedded in the soft iron 2 in the heat dissipation plate 1, in the magnetic field that permanent magnet 4 and soft iron dish 5 form, rotate, cutting magnetic line, himself produces foucault current, foucault current produces new magnetic field, realize that under the effect of magnetic force permanent magnet 4, soft iron dish 5, magnet fixed disc 3 and fan fixed disk 7 flexibly connect low speed rotation with heat dissipation plate 1, play the effect of radiating and cooling.Along with water temperature is elevated to 85 ℃, circuit in the cooling-water temperature sensor will be connected electromagnetic core 18 and get, produce the suction-combining force, with 10 adhesives of adhesive dish to drive plate 14, and rotate synchronously with drive plate 14, adhesive dish 10 directly drives fan fixed disk 7 high speed rotating by spring sheet 6, reaches powerful cool effect.When water temperature dropped to 76 ℃, the circuit in the cooling-water temperature sensor disconnected, electromagnetic core 18 dead electricity, and suction disappears, and adhesive dish 10 will break away from drive plate 14 under the elastic force effect of spring sheet 6, and at this moment fan fixed disk again can be with a kind of speed low speed rotation of variation.

Claims

1, a kind of double speed electromagnetic fan clutch is established drive plate (14) and is connected with heat dissipation plate (1) on main shaft (16) one sides; Electromagnetic core (18) housing (17) and bearing (15) are established in drive plate (14) inboard; Establish bearing (8) support and connection fan fixed disk (7) on the main shaft (16) in drive plate (14) outside; Establish soft iron dish (5) support and connection magnet on fan fixed disk (7) lower end surface and coil (3) admittedly; Establish spring sheet (6) support and connection adhesive dish (10) below the soft iron dish (5), adhesive dish (10) is positioned on the end face of drive plate (14) corresponding with inboard electromagnetic core (18) position of drive plate (14); It is characterized in that magnet fixed disc (3) fixed permanent magnet (4), permanent magnet (4) is corresponding with the soft iron (2) that is embedded in the heat dissipation plate (1); Establish a circle every the saturating groove of magnetic (11) on the adhesive dish (10) of adhesive dish (10) and the corresponding end face of drive plate (14), drive plate (14) end face is provided with two circles every the saturating groove of magnetic (12) (13).