CN2400631Y

CN2400631Y - Centrifugal clutch

Info

Publication number: CN2400631Y
Application number: CN99258205U
Authority: CN
Inventors: 李靖; 刘四喜; 王�琦; 荣斌
Original assignee: TIANJIN MACHINE TOOL ELECTRICAL EQUIPMENT FACTORY
Current assignee: TIANJIN MACHINE TOOL ELECTRICAL EQUIPMENT FACTORY
Priority date: 1999-12-30
Filing date: 1999-12-30
Publication date: 2000-10-11
Anticipated expiration: 2009-12-30

Abstract

The utility model relates to a centrifugal clutch. The utility model is characterized in that clamping plates are welded on both end surfaces of the big end of a shaft sleeve, and a driving block is sheathed on a pin shaft which is penetrated between the clamping plates; friction blocks and a fly block are arranged on the driving block, a tension spring with a hook ring is arranged in an annular groove which is formed from a groove on each friction block, and the friction block and the fly block can be surrounded and held by the tension spring; a belt pulley is supported on the shaft sleeve through a bearing, and a protecting cover is arranged at the big end of the belt pulley. The utility model has the advantages of convenient installation and manufacture, low driving noise, high operational reliability, higher capability in transferring torque, and long service life.

Description

Centrifugal clutch

The utility model belongs to F16D class technology, particularly relates to a kind of centrifugal clutch that is used for car air conditioner.

Present known centrifugal clutch, because this body structure limits, such as wherein each brake pad in the structure extension spring control is arranged all, so just generation makes the pulling force of each extension spring inconsistent, therefore also have deficiency, functional reliability is low and the generation noise is bigger.

The purpose of this utility model is to overcome the deficiency in the known technology and provides a kind of functional reliability the high and little centrifugal clutch of noise.

The purpose of this utility model is achieved in that

Clamping plate respectively have been welded on the both ends of the surface of the big end of the utility model Intermediate shaft sleeve, between two clamping plate, install the bearing pin that is set with a pair of above drive block on it, be equipped with on the drive block equate with drive block quantity and be shaped on it and the match brake pad of groove of drive block shape, between brake pad and brake pad, also be equipped with and fly piece, on each brake pad, all have the groove of U-shaped, in by the formed annular recess of each brake pad upper groove, install one with all brake pads with fly piece around the extension spring of embracing that has shackle, bearing by the back-up ring location also is installed on axle sleeve, by bearings belt pulley is arranged on the axle sleeve, the inwall of its belt pulley and brake pad constitute a pair of friction pair, outward edge at the big end of belt pulley is shaped on annular groove, at the big end of belt pulley the protective housing that the axle sleeve endoporus is exposed is housed by this groove.

The endoporus of above-mentioned Intermediate shaft sleeve can be made the singly-bound hole, also can make splined hole.

The piece that flies in above-mentioned is made cylindrical body.

The utility model has following accompanying drawing:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is the structural representation of brake pad 6 among Fig. 1;

Fig. 4 is the B-B sectional view of Fig. 3.

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail:

See figures.1.and.2, master end of the present utility model structure is, present embodiment is selected two pairs of drive blocks 11 for use, be enclosed within on the bearing pin 12, the endoporus of present embodiment axle sleeve 5 is elected the singly-bound hole as, the clamping plate 9 that respectively have been welded on the both ends of the surface of the big end of axle sleeve connect the bearing pin that is set with drive block and are loaded between two clamping plate, and drive block can turn an angle flexibly around bearing pin.On two pairs of above-mentioned drive blocks, be equipped with its quantity equate, promptly also be two pairs brake pad 6, with reference to Fig. 3 and Fig. 4, on brake pad and face that drive block contacts, be shaped on the groove 14 that matches with the drive block shape, what also be placed with cylindrical shape between brake pad and the brake pad flies piece 10, for with brake pad with fly piece and embrace in the lump, the corresponding groove 15 that is shaped on U-shaped on brake pad, the extension spring 7 that has shackle is installed in the groove of U-shaped, therefore reach brake pad by extension spring and fly the purpose that piece is embraced, have contact steadily and the little characteristics of noise.Connecing above-mentioned slave end of the present utility model is belt pulley 4, concrete linkage structure is, belt pulley is to be supported on the axle sleeve 5 by bearing 3, and the inwall of belt pulley and brake pad form a pair of friction pair, and described Internal and external cycle at the axle sleeve upper bearing (metal) is to block and prevent that it from axially jumping with back-up ring 1,2.In addition, at the big end of belt pulley the protective housing 8 that the axle sleeve endoporus exposes is housed.

Working principle of the present utility model is: directly controlled combination of the present utility model and separate by rotating speed, when the axle sleeve low-speed running of master end, centrifugal force is less than spring force, make brake pad can not with wall friction in the belt pulley, therefore non-moment produces, and when rotating speed was brought up to a certain value, centrifugal force just overcame spring force, and will fly piece and press to the belt pulley inwall together with brake pad and produce moment, institute so that slave end rotate.

Advantage and the good effect that the utlity model has are:

Since organically be combined into overall structure of the present utility model, therefore installation, easily manufactured, the transmission noise is little, the functional reliability height, and the transmitting torque ability is also higher, corresponding raising in service life.

Claims

1. centrifugal clutch, be by axle sleeve, bearing, belt pulley, protective housing, clamping plate, bearing pin, drive block, brake pad, extension spring, flying piece forms, it is characterized in that: clamping plate respectively have been welded on the both ends of the surface of the big end of axle sleeve, between two clamping plate, install the bearing pin that is set with a pair of above drive block on it, be equipped with on the drive block equate with drive block quantity and be shaped on it and the match brake pad of groove of drive block shape, between brake pad and brake pad, also be equipped with and fly piece, on each brake pad, all have the groove of U-shaped, in by the formed annular recess of each brake pad upper groove, install one with all brake pads with fly piece around the extension spring of embracing that has shackle, bearing by the back-up ring location also is installed on axle sleeve, by bearings belt pulley is arranged on the axle sleeve, the inwall of its belt pulley and brake pad constitute a pair of friction pair, outward edge at the big end of belt pulley is shaped on annular groove, at the big end of belt pulley the protective housing that the axle sleeve endoporus is exposed is housed by this groove.

2. centrifugal clutch according to claim 1 is characterized in that: the endoporus of above-mentioned Intermediate shaft sleeve can be made the singly-bound hole, also can make splined hole.

3. centrifugal clutch according to claim 1 and 2 is characterized in that: the piece that flies in above-mentioned is made cylindrical body.