CN202746449U - Permanent magnet automobile clutch with multiple small air gaps - Google Patents

Abstract

A permanent magnet automobile clutch with multiple small air gaps comprises a driving shaft, a driving disc, a driven shaft, a magnet yoke, a driven disc, a magnetic conduction disc, magnetic poles, a flywheel and a clutch housing, wherein the driving disc is fixed on the flywheel, driving disc teeth are fixed on the driving disc, the magnet yoke is a circular ring in shape, is arranged inside an outer ring of the magnetic conduction disc through guide teeth, and can slide along the axial direction, a plurality of pairs of magnetic poles are fixed on the magnet yoke, the driven disc is in a multi-ring shape, teeth of the same number as the magnetic poles are manufactured on the driven disc, and the air gaps form between the driving disc teeth and the magnetic poles. According to the working principle, when the clutch is not stepped on, the force of a spring enables the magnet yoke and the magnetic poles to be at the right position, a closed magnetic circuit is formed among the magnet yoke, the magnetic poles, the driven disc and the driving disc, the motive power of the flywheel is transmitted to the driven disc through magnetic force, and the situation is equivalent to 'closing' of the clutch. When the clutch is stepped on, a shifting fork enables the magnet yoke and the magnetic poles to be at the left, the magnetic poles and the magnetic conduction disc form a closed magnetic circuit, the magnetic force between the magnetic poles of the driven disc and the driving disc teeth is enabled to be removed, and the situation is equivalent to 'opening' of the clutch.

Description

Many small air gaps permanent-magnet clutch for automobile

Technical field

The utility model relates to the clutch in a kind of car transmissions.

Background technique

Clutch all is housed between car combustion engine and the speed changer, generally adopts friction type; But this clutch wear and tear in use than very fast, the life-span is shorter.For this reason, people have designed magnetic gear; The general mode of mobile magnetic conductive disk that adopts realizes clutch, and because magnetic gap is larger, the magnet consumption is large, makes the manufacture cost of magnetic gear be higher than friction type; And inconvenience is adjusted in dismounting.

The model utility content

The purpose of this utility model provides a kind of many small air gaps permanent-magnet clutch for automobile; This clutch changes the magnetic force between driven disc and the driving disc by changing the position of magnetic pole and yoke.Because the air gap between magnetic pole and driven disc is very little, and forms a plurality of air gaps; Thereby greatly reduce at the condition lower magnet consumption that transmits identical moment; And the magnetic force when dismounting and maintenance are adjusted between driven disc and the driving disc disappears, so dismounting and keep in repair very convenient.

Structure of the present utility model is comprised of driving shaft, driven shaft, driving disc, driven disc, magnetic conductive disk, yoke, magnetic pole, release bearing, shift fork, separator levers, spring, flywheel, clutch housing.Wherein flywheel is disc, is fixed on the driving shaft.Driving disc is ring, is fixed on the flywheel; Use the non-magnet material manufacturing, be shaped with the driving disc tooth that a few equate with pole number on it, the interior toothrow is made gear ring.Magnetic conductive disk is dual torus, and outer shroud is screwed on flywheel, and its inwall is shaped with the guiding tooth; Be used to yoke guiding and carry-over moment; Interior ring matches with magnetic pole and consists of the magnetic closed magnetic circuit.Yoke is ring, is loaded in the magnetic conductive disk outer shroud by the guiding tooth, and can slides vertically; Fix many to magnetic pole on the yoke.Pull bar one end is fixed on the yoke, and the other end is made groove type.Driving shaft is the bent axle of internal-combustion engine, and flywheel is contained on the bent axle; Driven disc is used the non-magnet material manufacturing for how annular, is shaped with the driven disc tooth that equates with pole number on each ring.Driven disc is loaded on the driven shaft by spline, and its axial position is limited by positioning retainer ring; The driven disc tooth is corresponding with driving disc tooth and magnetic pole, and and driving disc tooth and magnetic pole between form air gap.Driven shaft on flywheel, which is provided with positioning retainer ring by bearings, and accurately position is arranged when being used for making driven disc work.The separator levers support is contained on the magnetic conductive disk, and separator levers is contained on the separator levers support by bearing pin; One end places in the pull bar groove, and the other end matches with release bearing.Spring is torsion spring, is enclosed within on the bearing pin; Spring force makes yoke, magnetic pole be in right position by separator levers, pull bar.Shift fork is bearing on the clutch housing, is used for release bearing is moved right; Make yoke, magnetic pole be in left position by separator levers, pull bar.

Working principle: during internal combustion engine, driving shaft drives driving disc, magnetic conductive disk and yoke and rotates together; When not stepping on clutch, spring makes yoke be in right position by separator levers, pull bar, forms closed magnetic circuit between yoke, magnetic pole, driven disc tooth and the driving disc tooth.Magnetic force between magnetic pole, driven disc tooth and the dish tooth is large, and the power of flywheel passes on the driven disc by magnetic force, is equivalent to clutch and " closes ".When stepping on clutch, shift fork promotes release bearing makes yoke, magnetic pole be in left position by separator levers, and the interior ring on magnetic pole and the magnetic conductive disk forms closed magnetic circuit; Magnetic force between magnetic pole and the master and slave Moving plate tooth is disappeared, and the power of flywheel can not pass on the driven disc, be equivalent to clutch " from ".

Owing to form a plurality of small air gaps between many small air gaps permanent-magnet clutch for automobile driven disc tooth and magnetic pole and the driving disc tooth, can greatly reduce the consumption of magnet.

Description of drawings

Accompanying drawing is tectonic maps of the present utility model, and 1 separator levers support, 2 release bearings, 3 shift forks, 4 splines, 5 spline housings, 6 positioning retainer rings, 7 springs, 8 separator levers, 9 clutch housings, 10 magnetic conductive disks, 11 flywheels, 12 driven disc teeth, 13 internal combustion (IC) engine airframe, 14 bearings, 15 driving shafts, 16 driving discs, 17 driving disc teeth, 18 driven discs, 19 guiding teeth, 20 gear rings, 21 magnetic poles, 22 yokes, 23 pull bars, 24 are adjusted screw, 25 driven shafts among the figure.

Embodiment

Driving disc in the accompanying drawing (16) is fixed on the flywheel (11), fixing driving disc tooth (17) on it, and magnetic conductive disk (10) is fixed on the flywheel (11); Yoke (22) is loaded in the magnetic conductive disk (10), fixed magnetic pole on it (21); Driven disc (18) is loaded on the driven shaft (25) by spline (4); Driven shaft (25) passes clutch housing (9), is bearing on the flywheel (11) by bearing (14).

Claims (1)

1. small air gap permanent-magnet clutch for automobile more than a kind, it is characterized in that: the structure of many small air gaps permanent-magnet clutch for automobile is comprised of driving shaft, driven shaft, driving disc, driven disc, magnetic conductive disk, yoke, magnetic pole, release bearing, shift fork, separator levers, spring, flywheel, clutch housing; Wherein flywheel is disc, is fixed on the driving shaft; Driving disc is ring, is fixed on the flywheel, uses the non-magnet material manufacturing, is shaped with the driving disc tooth that a few equate with pole number on it, and the interior toothrow is made gear ring; Magnetic conductive disk is dual torus, and outer shroud is screwed on flywheel, and its inwall is shaped with the guiding tooth, and interior ring matches with magnetic pole and consists of the magnetic closed magnetic circuit; Yoke is ring, is loaded in the magnetic conductive disk outer shroud by the guiding tooth, and can slides vertically, fixes many to magnetic pole on the yoke; Pull bar one end is fixed on the yoke, and the other end is made groove type; Driving shaft is the bent axle of internal-combustion engine, and flywheel is contained on the bent axle; Driven disc is used the non-magnet material manufacturing for how annular, is shaped with the driven disc tooth that equates with pole number on each ring; Driven disc is loaded on the driven shaft by spline, and its axial position is limited by positioning retainer ring; The driven disc tooth is corresponding with driving disc tooth and magnetic pole, and and driving disc tooth and magnetic pole between form air gap; Driven shaft on flywheel, which is provided with positioning retainer ring by bearings, and accurately position is arranged when being used for making driven disc work; The separator levers support is contained on the magnetic conductive disk, and separator levers is contained on the separator levers support by bearing pin, and an end places in the pull bar groove, and the other end matches with release bearing; Spring is torsion spring, is enclosed within on the bearing pin, and spring force makes yoke, magnetic pole be in right position by separator levers, pull bar; Shift fork is bearing on the clutch housing, is used for release bearing is moved right; Make yoke, magnetic pole be in left position by separator levers, pull bar.

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