CN202391545U

CN202391545U - Three-speed electromagnetic fan clutch

Info

Publication number: CN202391545U
Application number: CN201120478306XU
Authority: CN
Inventors: 冉礼泽; 陶根喜
Original assignee: JIAXING NEWMAN MACHINERY CO Ltd
Current assignee: JIAXING NEWMAN MACHINERY CO Ltd
Priority date: 2011-11-22
Filing date: 2011-11-22
Publication date: 2012-08-22
Anticipated expiration: 2021-11-22

Abstract

The utility model discloses a three-speed electromagnetic fan clutch. The structure of the three-speed electromagnetic fan clutch is as follows: a core shaft is supported in an inner hole of an electromagnetic iron core by two rolling bearings, and a drive disc and the core shaft are fixed together to rotate by connection of keys. The three-speed electromagnetic fan clutch is characterized in that a permanent magnet fixing disc is supported on a rolling bearing; a soft iron ring is arranged in the permanent magnet fixing disc; a permanent magnet is enchased at the corresponding position; a small friction disc is indirectly connected to the inner side of the permanent magnet fixing disc by a small spring piece; a fan mounting disc is supported on the core shaft by double rows of angular contact ball bearings; a large friction disc is indirectly installed on three claw platforms extending out of the outer circle of the fan mounting disc by a large spring piece; and screws for installing the fan are pressed in and fixed from the inner side of the fan mounting disc. The three-speed electromagnetic fan clutch can realize the flexible connection of the fan when the fan starts and operates at low speed, provides large suction torque during high-speed operation, and meets the work requirements of large-power fans, so that the three-speed electromagnetic fan clutch has the advantages of large suction torque, small impact force and convenience in assembly and disassembly of the fans.

Description

Three-speed electromagnetic fan clutch

Technical field

The utility model relates to car engine cooling system, relates in particular to a kind of three-speed electromagnetic fan clutch.

Background technique

At present; Structure at the sort of three speed clutch of the basically all similar LINNIG of the three-speed electromagnetic fan clutch of usefulness; Be that its fan mounting disc is between permanent magnetism fixed tray, induction drive plate and friction disk assembly; Need the induction drive plate of front end be disassembled respectively with the permanent magnetism fixed tray when fan is installed fan could be installed, install and maintenance inconvenience extremely, and the drive plate of the responding to installation phenomenon that causes unexpected tribological failure not in place is often arranged.This influences three-speed electromagnetic fan clutch being widely used on high-powered automobiles.

The model utility content

It is big that the purpose of the utility model provides a kind of adhesive moment of torsion, can be directly from the three-speed electromagnetic fan clutch of front end installation and removal fan.

For the technological scheme that reaches above-mentioned effect the utility model is: mandrel passes through two roller bearings at the electromagnetic core endoporus; Rotation that drive plate connects through key and mandrel is fixed together; It is characterized in that: the permanent magnetism fixed tray is supported on the rolling bearing; Be provided with the soft iron ring in the permanent magnetism fixed tray, inlay permanent magnet on the corresponding position, the friction dish is connected permanent magnetism fixed tray inboard indirectly through the submissile reed; The fan mounting disc is supported on the mandrel through double-row angular contact bal bearing, and big friction disk is installed on three pawl platforms that fan mounting disc cylindrical stretches out through the big spring sheet indirectly; The screw that fan is installed is pressed into fixing from fan mounting disc inboard.

The interior soft iron ring of soft iron ring in the described permanent magnetism fixed tray and permanent magnet and fan mounting disc is corresponding.

Described fan mounting disc is inlaid with the soft iron ring on the outer ring, and the outside of fan mounting disc and inboard outer ring have radial radiating fin of many convexities evenly to distribute.

This model utility is owing to adopt technique scheme; Realize the method for three grades of transmissions; The powerful fan requirements of one's work are satisfied in the requirement that flexibly connects, provides when running up big adhesive moment of torsion in the time of can realizing starting fan and low-speed running, thereby it is big to have an adhesive moment of torsion; Impact force is little, the advantage of fan easy installation and removal.

Description of drawings

Fig. 1 is the structural representation of three-speed electromagnetic fan clutch;

Fig. 2 is the plan view of permanent magnet fixed tray assembly;

Fig. 3 is the rotation diagram of the A-A section of Fig. 2;

Fig. 4 is the plan view of fan mounting disc;

Fig. 5 is the sectional view of Fig. 4.

Among the figure, 1, fan; 2, double-row angular contact bal bearing; 3, screw; 4, soft iron ring; 5, key; 6, permanent magnet; 7, soft iron ring; 8, big friction disk; 9, drive plate; 10, friction dish; 11, big electromagnetic core; 12, electromagnetic core; 13, little electromagnetic core; 14, mandrel; 15, rolling bearing; 16, belt pulley; 17, fan mounting disc; 18, permanent magnetism fixed tray; 19, big spring sheet; 20, submissile reed; 21. electromagnet plug connector.

Embodiment

Below in conjunction with embodiment the utility model is done further to describe.

Fig. 1 to Fig. 5 is the structural representation of three-speed electromagnetic fan clutch.From figure, find out that three-speed electromagnetic fan clutch is to be supported on electromagnetic core 12 endoporus at mandrel 14 through two rolling bearings 15, rotation that drive plate 9 connects through key and mandrel 14 is fixed together; Permanent magnetism fixed tray 18 is supported on the rolling bearing, is provided with soft iron ring 7 in the permanent magnetism fixed tray 18, inlays permanent magnet 6 on the corresponding position, and friction dish 10 is connected permanent magnetism fixed tray 18 inboards indirectly through submissile reed 20; Fan mounting disc 17 is supported on the mandrel 14 through double-row angular contact bal bearing 2; The exterior edge face of fan mounting disc 17 is fixed with fan 1; Big friction disk 8 is installed on three pawl platforms that fan mounting disc 17 cylindricals stretch out through big spring sheet 19 indirectly; The outside of fan mounting disc 17 and inboard outer ring have radial radiating fin of many convexities evenly to distribute, and a soft iron ring 4 is inlayed in fan mounting disc 17 outer rings, and be corresponding with permanent magnet 6 with soft iron ring 7 in the permanent magnetism fixed tray 18; The screw 3 that fan is installed is pressed into fixing from fan mounting disc 17 inboards.

During work, first grade: two coils are no electric circuit all, and engine drives belt pulley 16 connects 9 rotations of drive drive plate with mandrel 14 rotations, mandrel 14 through key 5, and fan mounting disc 17 slowly runs through the frictional force of double-row angular contact bal bearing 2.Second grade: when water temperature is elevated to setting temperature (as 85 ℃); Engine ECU (or temperature controller or thermal switch) is given little electromagnetic core 13 energisings; Generate an electromagnetic field and to drive plate 9, rotate 10 adhesives of friction dish synchronously, friction dish 10 drives permanent magnetism fixed trays 18 rotation synchronously through submissile reed 20, and the soft magnetism ring 4 in the fan mounting disc 17 is with regard to cutting magnetic line; Produce foucault current; Fan mounting disc 17 flexibly connects with permanent magnetism fixed tray 18 under the effect of magnetic force, and suitably air-cooled effect is played in the middling speed rotation; When water temperature is lower than setting temperature (as 78 ℃), Engine ECU (or temperature controller or thermal switch) is broken off the power supply of little electromagnetic core 13.Third gear: when water temperature is elevated to setting temperature (as 93 ℃); Engine ECU (or temperature controller or thermal switch) is given big electromagnetic core 11 energisings; Generate an electromagnetic field and to drive plate 9, rotate big friction disk 8 adhesives synchronously; Big friction disk 9 drives fan mounting disc 17 rotation synchronously through big spring sheet 19, reaches powerful air-cooled effect; When water temperature is lower than setting temperature (as 84 ℃), Engine ECU (or temperature controller or thermal switch) is broken off the power supply of big electromagnetic core 11.So go round and begin again, can make the water temperature of motor remain at running in the optimal setting temperature range, thus the life-span of improving motor.

Claims

1. three-speed electromagnetic fan clutch; Mandrel passes through two roller bearings at the electromagnetic core endoporus; Rotation that drive plate connects through key and mandrel is fixed together, it is characterized in that: the permanent magnetism fixed tray is supported on the rolling bearing, is provided with the soft iron ring in the permanent magnetism fixed tray; Inlay permanent magnet on the corresponding position, the friction dish is connected permanent magnetism fixed tray inboard indirectly through the submissile reed; The fan mounting disc is supported on the mandrel through double-row angular contact bal bearing, and big friction disk is installed on three pawl platforms that fan mounting disc cylindrical stretches out through the big spring sheet indirectly; The screw that fan is installed is pressed into fixing from fan mounting disc inboard.

2. three-speed electromagnetic fan clutch according to claim 1 is characterized in that the interior soft iron ring of soft iron ring and permanent magnet and fan mounting disc in the described permanent magnetism fixed tray is corresponding.

3. three-speed electromagnetic fan clutch according to claim 1 is characterized in that being inlaid with the soft iron ring on the described fan mounting disc outer ring, and the outside of fan mounting disc and inboard outer ring have radial radiating fin of many convexities evenly to distribute.