CN201180750Y

CN201180750Y - Plate type friction clutch of engine

Info

Publication number: CN201180750Y
Application number: CNU2008200979854U
Authority: CN
Inventors: 刘珍利
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-04-03
Filing date: 2008-04-03
Publication date: 2009-01-14
Anticipated expiration: 2018-04-03

Abstract

The utility model discloses a chip friction clutch of an engine. The outer housing of the clutch is a circumferential wall which is formed by drawing and stamping a steel plate, and has the structure comprising a plurality of axially extending inner and outer flutes; the inner and the outer flutes are arranged at intervals on the circumferential wall of outer housing; the outer flutes are arranged on an end surface of one end of the outer housing opening, the end surface is formed by drawing and stamping and is a connecting rib used for increasing the strength; an external tooth formed on the circumference of a driving disc and an external tooth formed on the circumference of a driving friction plate of a friction set assembly are inserted in the inner flutes of the outer housing, thereby forming the circumferential location fit with the outer housing; and an end cover which is formed by drawing and stamping a steel plate is fixedly connected with the outer housing through a fastener. In the chip friction clutch, the tensile strengths of the outer housing and the end cover, as well as the firmness of the connection, are improved, thereby preventing the clutch from bursting under the condition of rotating at a high speed.

Description

The plate clutch of motor

Technical field

The utility model relates to a kind of clutch, particularly a kind of plate clutch of motor.

Background technique

The outer cover of the plate clutch of motor in the past and clutch end cap, usually all be to form by aluminium alloy compression casting, for reaching certain intensity, the thickness of outer cover and end cap is all relative thicker, its cost of material and fabricating cost are than higher, and deadweight is heavier relatively, is unfavorable for alleviating of engine weight.And because the tensile strength of aluminum alloy is lower, general tensile strength is 240N/MM ², specific elongation is 1%, the phenomenon of mashed tooth often takes place in the tapped hole that is connected with the clutch end cap on the clutch housing; Because the tensile strength of aluminum alloy is lower, clutch in the course of the work high speed rotating following time of situation and the phenomenon of explosion takes place, gently then damage the motor associated components, heavy then cause personal injury accidents; Former clutch also because radiating structure is bad, causes friction material temperature drift in the clutch working procedure, and the phenomenon of scaling loss takes place friction plate often.

Summary of the invention

The purpose of this utility model provides a kind of plate clutch of motor, this clutch adopts stamping forming outer cover of thin steel sheet pull and stretch and end cap, both are fixedly connected by fastening piece, the tensile strength of clutch housing and end cap and the soundness that is connected are improved, can prevent that clutch from the phenomenon of explosion taking place under the situation of high speed rotating.

The purpose of this utility model is achieved in that the driving disc of clutch, the friction pair combination, centering sliding sleeve combine and assemble is in outer cover, the combination of centering sliding sleeve cooperates with the intersegmental crack of axially extended axle sleeve of driving disc, making up at the centering sliding sleeve of friction pair combination from the movable friction plate spline fitted, described outer cover be the stamping forming peripheral wall of steel plate pull and stretch have a plurality of axially extended in, the structure of outer groove, in described, the alternate outer cover peripheral wall that is positioned at of outer groove, the end face that outer groove is positioned at outer cover mouth one end is the stamping forming connecting tendon that is used to gain in strength of pull and stretch, the external tooth of the active friction plate circumference setting of the external tooth of driving disc circumference setting and friction pair combination is inserted in the inner groovy of outer cover, form circumferential location with outer cover and cooperate, one is that the stamping forming end cap of steel plate pull and stretch is fixedlyed connected with outer cover by fastening piece.

Owing to adopted such scheme, adopt the stamping forming structure of steel plate pull and stretch to have the following advantages respectively outer cover, the end cap of clutch:

1. tensile strength and the specific elongation owing to cold rolled sheet is bigger than aluminum alloy, can reach tensile strength usually to be 〉=290N/MM ²Specific elongation is 〉=55%, adopt the tensile strength and the specific elongation of stamping forming outer cover of slim cold rolled sheet pull and stretch and end cap to be significantly improved, tensile strength improves can avoid the recurrent bad tooth phenomenon of tapped hole that is connected with the clutch end cap on the aluminum alloy outer cover of former clutch, and the raising of specific elongation can be avoided the recurrent bursting accident of aluminum alloy outer cover of former clutch.

2. because outer cover and end cap all adopt the stamping forming structure of steel plate pull and stretch, can use the thin steel plate of 0.8～2mm to make, can reduce the cost of material and the fabricating cost of outer cover and end cap greatly.

3. the peripheral wall pull and stretch impact briquetting of outer cover has a plurality of axially extended inside and outside grooves, inner groovy is used for driving disc, active friction plate are circumferentially located transmitting torque, outer groove makes the external frame of outer cover form impeller shape, can make in rotation the machine oil in the motor oil sump is splashed, machine oil is splashed on the casing of motor, also heat is taken on the casing of motor simultaneously, contact the heat radiation of booster engine by tank surface with atmosphere.

4. the end face that outer groove is positioned at outer cover mouth one end is made as the stamping forming connecting tendon that is used to gain in strength of pull and stretch, and the intensity and the rigidity of outer cover mouth one end that adopts relatively thin steel plate making are strengthened, and can not produce distortion.

5. have because the depression of paper washer is installed at the end face forming of the stamping forming end cap of described pull and stretch towards outer cover, can be spacing to paper washer, avoid paper washer under the effect of high speed centrifugation power, to be thrown out of because of being subjected to machine oil corrosion back, make this place leakage of oil occur, cause the crankshaft-link rod oil-feed bad and abnormal sound takes place and burn phenomenon to death.

The utility model is described in further detail below in conjunction with drawings and Examples.

Description of drawings

Fig. 1 is a kind of embodiment's of the utility model clutch an assembly structure schematic representation;

Fig. 2 is the cross-sectional view of the driving disc of clutch;

Fig. 3 is a kind of embodiment's schematic representation of outer cover;

Fig. 4 is another kind of embodiment's schematic representation of outer cover;

Fig. 5 is the cross-sectional view of end cap.

In the accompanying drawing, 1 is bent axle, and 2 is gear, and 3 is axle sleeve, 4 is the driven tooth cover, and 5 is elastic collar, and 6 is driven disc, and 7 is block plate, 8 is back-up ring, and 9 is from movable friction plate, and 10 is active friction plate, and 11 is push-plate, 12 is driving disc, and 12a is the driving disc external tooth, and 12b is a spring mounting hole, and 12c is a cylinder, 13 is outer cover, and 13a is outer groove, and 13b is an inner groovy, 13c is a connecting tendon, and 13d is a spring mounting seat, and 13e is the limit of turning back, 14 is pressure spring, and 15 is screw, and 16 is paper washer, 17 is end cap, and 17a is depression, and 18 is centrifugal, 19 are the cam disk combination, and 20 are the snubber combination, and 21 is spring, 22 are the cam disk combination, and 23 for regulating bolt, and 24 is plain washer, 25 is right case lid, and 26 is nut, and 27 is oil pipe, 28 is the oil pipe spring, and 29 is bearing, and 30 is round nut, 31 is saucer washer, and 32 is floor clip, and 33 is centrifugal, 34 is pressure spring, and 35 is wavy spring, and 36 is damping spring.

Embodiment

Referring to Fig. 1,2,3,5, the driving disc of this clutch, friction pair combination, centering sliding sleeve combine and assemble are in outer cover 13.Described centering sliding sleeve combination is made up of driven tooth cover 4 and driven disc 6, driven disc 6 circumferentially is fixed on the driven tooth cover 4 by spline fitted or tight key cooperation, driven tooth cover 4 is provided with elastic collar 5,35 pairs of driven discs of wavy spring 6 carry out axial limiting, one end of the axis hole of driven tooth cover 4 is provided with internal tooth, the axis hole of driven tooth cover 4 cooperates with the intersegmental crack of axially extended axle sleeve of driving disc 12, the friction pair combination from movable friction plate 9 spline fitted on the driven disc 6 that the sliding sleeve of feeling relieved makes up.Described outer cover 13 has the structure of a plurality of axially extended inside and outside grooves for the stamping forming peripheral wall of steel plate pull and stretch, the inner groovy 13b of present embodiment, outer groove 13a are made as 8 respectively, 8 alternate outer cover 13 peripheral wall that are positioned at of inner groovy 13b, outer groove 13a, the end face that outer groove 13a is positioned at outer cover mouth one end is the stamping forming connecting tendon 13c that is used to gain in strength of pull and stretch, the stamping forming connecting tendon 13c that is used to gain in strength is axial perpendicular to outer cover for this pull and stretch, and it extends to continuous outer cover 13 peripheral wall in limit of notch.Driving disc 12 circumference are provided with and form among 4 inner groovy 13b that 4 external tooth 12a are inserted in outer cover 13 respectively circumferentially that the location cooperates, and active friction plate 10 circumference of friction pair combination are provided with and form circumferentially among 8 inner groovy 13b that 8 external tooths are inserted in outer cover 13 respectively that the location cooperates.Be provided with push-plate 11 between one axial end of driving disc 12 and friction pair combination, these push-plate 11 circumference are provided with and form among the inner groovy 13b that 8 external tooths are inserted in outer cover 13 circumferentially that the location cooperates, block plate 7 axial limitings that another axial end of friction pair combination is circumferentially located by the inner groovy 13b by 8 external tooths and outer cover 13, block plate 7 is used to separate the pressure spring 34 of friction pair between push-plate 11 and block plate 7 by being stuck in outer cover 13 covers mouthful interior back-up ring 8 axially locating, being provided with in the inner groovy 13b of outer cover 13.Axial end is provided with on the driving disc 12, and 4 cylinder 12c and outer cover 13 are fastenedly connected by screw 15, be with pressure spring 14 respectively on 4 cylinder 12c, pressure spring 14 is being subjected to the situation lower compression of end thrust, driving disc 12 can be produced together with outer cover 13 move axially.Be hinged with at least 4 centrifugal 33 on the driving disc 12, contact with push-plate 11 for centrifugal 33, promoting push-plate 11 for centrifugal 33 under the centrifugal action that clutch rotation produces moves axially the friction pair combination is compressed transmitting torque, after centrifugal force disappears, under the tension force effect of the pressure spring 34 between push-plate 11 and the block plate 7, the active friction plate 10 of friction pair combination with separate from movable friction plate 9, cut off the torque break transmission of power.Be evenly equipped with several spring mounting hole 12b on the driving disc 12, damping spring 36 1 ends are packed in the spring mounting hole 12b of driving disc 12, the other end snaps in the damping spring fitting seat 13d of outer cover 13, the vibrations that produce between driving disc 12 in the time of can reducing the clutch rotation by damping spring 36 and the outer cover 13.Axle sleeve 3 of Spielpassung on the bent axle 1 of motor, Spielpassung one is used for the gear 2 of transferring power on the axle sleeve 3, and this gear 2 meshes with the internal tooth of the driven tooth cover 4 of clutch centering axle sleeve, accepts the power of clutch transmits.Bent axle 1 passes through spline fitted with driving disc 12, and transferring power is given driving disc 12.Load onto floor clip 32, saucer washer 31 on the bent axle 1 successively, fastening with round nut 30, driving disc 12 axial limitings on bent axle 1, and are formed the mount of clutch and motor.One is that the stamping forming end cap 17 of steel plate pull and stretch is fixedlyed connected with outer cover 13 by fastening piece rivet or bolt, described end cap 17 is useful on the depression that paper washer 16 is installed towards the end face pull and stretch drawing of outer cover 13, paper washer 16 is spacing in the depression 17a of end cap 17, between end cap 17 and outer cover 13, be used for the matching gap of end cover 17 and outer cover 13.The axial end wall outer surface of perhaps described outer cover 13 forms the depression that is used to install paper washer, paper washer 16 is spacing in the depression of outer cover 13, between outer cover 13 and end cap 17, the matching gap that is used for end cover 17 and outer cover 13, can reach sealing equally and prevent that paper washer 16 is subjected to the effect that machine oil corrosion back is thrown out of under the effect of high speed centrifugation power, stop thus because of leakage of oil appears in this place, cause the bad and abnormal sound that takes place of crankshaft-link rod oil-feed and burn phenomenon to death.The bearing 29 of in the counterbore of the center of circle of end cap 17, packing into, oil pipe combination 27 is engaged in the circle center hole of bearing 29, spring 28 is located in the oil pipe, oil pipe combination 27 is connected with cam disk, be provided with snubber assembly 20 between first cam disk 19 of cam disk combination and second cam disk 22, be provided with spring 21 between first cam disk 19 and the snubber assembly 20, second cam disk 22 is connected with the right case lid 25 of motor by regulating bolt 23, regulate bolt 23 and put plain washer 24, cam disk is made up the right case lid 25 that is fastenedly connected at motor by nut 26.

Referring to Fig. 4, it is axial perpendicular to outer cover 13 that the outer groove 13a of described outer cover 13 is positioned at the stamping forming connecting tendon 13c that is used to gain in strength of pull and stretch of outer cover mouth one end, and this connecting tendon 13c also can be made as the limit 13e that turns back that its limit of extending the outer cover circumference forms continuous ring outer cover circumference.

When engine operation, bent axle begins to rotate, the driving disc that drives clutch rotates, because 4 external tooths of driving disc are circumferentially located with the inner groovy of outer cover and are cooperated, so driving clutch housing rotates, because the external tooth of push-plate, active friction plate, block plate is circumferentially located with 8 inner groovies of outer cover and is cooperated, so outer cover band push-plate, active friction plate, block plate rotation.When motor is in idling conditions, the centrifugal force of centrifugal generation on the driving disc is not enough to overcome the resistance of the pressure spring between clutch push-plate and the block plate, the clutch push pedal can not move axially, so friction pair combination can not form impaction state, and this moment, clutch was in separated state.When opening the throttle gradually, increase along with engine speed, the centrifugal force of centrifugal generation on the driving disc increases gradually, overcome the resistance of pressure spring, promoting the clutch push pedal moves axially, make friction pair make up driving and driven friction plate and compress transmitting torque, by giving the combination of centering sliding sleeve with transmission of power from movable friction plate, the driven tooth cover that drives the combination of centering sliding sleeve rotates, the driven tooth cover drives the gear of Spielpassung on bent axle and rotates, and by this gear the driven gear that transmission of power is engaged with is finished transmission of power.

Above-mentioned is one of embodiment of the present utility model; the utility model is except that being used for the multidisc centrifugal tyep automatic clutch; also be applicable to any other multidisc clutch, in the spirit of this claim, do a little change, all belong to protection domain of the present utility model.

Claims

1. the plate clutch of a motor, the driving disc of clutch, the friction pair combination, centering sliding sleeve combine and assemble is in outer cover, the combination of centering sliding sleeve cooperates with the intersegmental crack of axially extended axle sleeve of driving disc, making up at the centering sliding sleeve of friction pair combination from the movable friction plate spline fitted, it is characterized in that: described outer cover be the stamping forming peripheral wall of steel plate pull and stretch have a plurality of axially extended in, the structure of outer groove, in described, the alternate outer cover peripheral wall that is positioned at of outer groove, the end face that outer groove is positioned at outer cover mouth one end is the stamping forming connecting tendon that is used to gain in strength of pull and stretch, the external tooth of the active friction plate circumference setting of the external tooth of driving disc circumference setting and friction pair combination is inserted in the inner groovy of outer cover, form circumferential location with outer cover and cooperate, one is that the stamping forming end cap of steel plate pull and stretch is fixedlyed connected with outer cover by fastening piece.

2. the plate clutch of motor according to claim 1, it is characterized in that: the stamping forming connecting tendon that is used to gain in strength of described pull and stretch is axial perpendicular to outer cover, and it extends to the continuous outer cover peripheral wall in limit of notch.

3. the plate clutch of motor according to claim 1, it is characterized in that: the stamping forming connecting tendon that is used to gain in strength of described pull and stretch is axial perpendicular to outer cover, and its limit of extending the outer cover circumference forms the limit of turning back of continuous ring outer cover circumference.

4. the plate clutch of motor according to claim 1 is characterized in that: the stamping forming end cap of described pull and stretch is useful on the depression that paper washer is installed towards the end face forming of outer cover.

5. the plate clutch of motor according to claim 1, it is characterized in that: the axial end wall outer surface of described outer cover forms the depression that is used to install paper washer.

6. the plate clutch of motor according to claim 1 is characterized in that: described centering sliding sleeve combination is made up of driven tooth cover and driven disc, and driven disc circumferentially is fixed on driven tooth and puts, and an end of the axis hole that driven tooth is overlapped is provided with internal tooth.