CN1142579A - Centrifugal clutch - Google Patents

Abstract

a centrifugal clutch, which is characterized by loosing transmission shock at the time of setting off a clutch, and comparatively reducing transmission operation force in a centrifugal clutch which connects an input side to an output side in accordance with rotational speed at an input side is a specified value or more, comprises a drive plate for the input member, a sealed liquid chamber which is formed between a drive plate of an input member and a relatively unrotatable drive outer, a trochoild pump which is structured by housing an inner rotor and an outer rotora, in a pump casing composed of the drive plate, the output member, the rotor case connected to the drive outer, which introducing operation liquid inside the closed liquid chamber is closed by a centrifugal control valve according to enlargement of the centrifugal force.

Description

Centrifugal clutch

The present invention relates to the centrifugal clutch that a kind of revolution corresponding to input side reaches more than the specified value, input side and outlet side are combined.

In the past, the technology of relevant of this sort centrifugal clutch is opened on the clear 62-67333 communique and was introduced as, Ceng Zaite.In the technology in the past, be to utilize plural pieces to drive frictional fit between clutch disk and the passive clutch disk of plural pieces relative, carry out the transmission of power between input side and the outlet side with it.But the speed change when clutch is disconnected is impacted bigger, and needs bigger variable speed operation power.The size of speed change impact force can be determined by following formula: the inertial mass * revolution of slave end when clutch disconnects.In the technology in past, leave than distant positions along radial direction from the spin axis of input link, be equipped with the passive clutch disk of plural pieces, so the inertial mass that produces is bigger, in the process of carrying out variable speed operation, then need in addition with bigger force compresses clutch spring.

The present invention proposes in view of above problem, and its purpose is to provide a kind of such centrifugal clutch, in the time of speed change impact force when promptly relaxing clutch and disconnecting, can also obtain less variable speed operation power.

Based on above-mentioned purpose, the characteristics of the described centrifugal clutch of the 1st scheme are that it comprises according to the present invention: with the perpendicular plane of spin axis in, have and be driver blade one, that be disc-shape, be connected in the input link of input side; With around the same axis of rotational axis of input link, can be disc-shape in relative rotation, its axial the other end is slidingly connected on another face of driver blade, and the output link that is connected with outlet side; Can not be connected on this input link with respect to aforementioned input link with relatively rotating, constitute the outer transmission body of sealing liquid chamber again with a face of above-mentioned driver blade; The excircle that has with output link forms the inner circumference of eccentric shape and is surrounded on the cylindrical part of output link, and is connected the rotor shell on the outer transmission body; In the pump chamber in the pump case of forming by above-mentioned driver blade, output link and rotor shell, the internal gear of the pump that accommodating can not be rotationally with respect to output link, combine with output link and with the cylindrical part of rotor shell rotatably tabling and with the internal gear of the pump external gear of the pump of interlock mutually, suction port in the exhaust port of the drain that simultaneously, pump chamber come out guiding sealing liquid chamber and the working liquid body guiding pump chamber that sealing liquid is indoor is set on the driver blade and the trochoid gear pump that constitutes; Become big corresponding to the centrifugal force that produces along with the rotation of driver blade, can make to close to suck oral-lateral and move, and be supported near the centrifugal control valve on the face of the driver blade at place, sealing liquid chamber.

The described characteristic feature of an invention of the present invention's the 2nd scheme is: on the formation of the described invention of above-mentioned the 1st scheme, also have: opening on the direction of suction port, can drive a kind of clutch separation operation equipment of above-mentioned centrifugal control valve.

Invention described in the present invention's the 3rd scheme is on the basis of the 1st, the 2 described inventions of scheme, also has: outer driving medium can relatively move within the limits prescribed along spin axis, and links together with driver blade.

According to the described structure of the 1st scheme of the present invention, though the driver blade of input link is accompanyed or follow the rotating power of input side and is rotated, but the revolution at this driver blade is in low state, the centrifugal force that acts on centrifugal control valve does not reach and can allow centrifugal control valve close the action of suction port one side, under this state, rotate with driver blade corresponding to rotor shell, change in turn with the engaging position of the internal gear of pump external gear, though trochoid gear pump produces the effect of pump, but because suction port and exhaust port all are in open mode, the flow resistance of working liquid body is very little, and trochoid gear pump is in idling conditions, and its power does not pass to output link.On the other hand, the rotating power that comes along with input side strengthens, the become higher speed rotation of the driver blade of input link makes the centrifugal force that acts on centrifugal control valve become big, and centrifugal thus control valve is operated in suction port and closes a side, along with the increase of the discharge capacity of trochoid pump, close suction port, because the increasing of the flow resistance of working liquid body, the pressure of pump chamber will increase, because reaction, power will pass to the internal gear of pump, i.e. output link.

The described invention structure of the 2nd scheme according to the present invention when utilizing the clutch separation operation equipment, when opening the centrifugal control valve of suction port one side drive, owing to reduce liquid flowing resistance, is blocked the rotating power that passes to output link one side.

Invention structure according to the present invention described in the 3rd scheme, the driver blade of input link, along with the increasing of the rotating power of input side with higher speed rotation, in this state, the pressure of sealing liquid chamber, to increase according to the discharge capacity increase and the closing of suction port of trochoid pump, outer driving medium is a rotor shell, with respect to driver blade, within the limits prescribed, the direction of edge axle can relatively move, the high pressure that rotor shell is indoor according to sealing liquid, moving,, the rotating power that passes to the output link side is increased owing to the surface friction drag that this promotion produces along the direction of pushing the internal gear and the external gear of pump to driver blade, simultaneously, make the internal gear of pump and the gap smaller between external gear and the driver blade, working solution spill minimizing, thereby improved the working efficiency of pump.

Fig. 1 represents the sectional arrangement drawing of centrifugal clutch,

2-2 line amplification profile in Fig. 2 presentation graphs 1,

Fig. 3 represents the part back elevation of trochoid gear pump,

The profile of being looked along arrow 4 in Fig. 4 presentation graphs 3.

Below, the embodiment that present invention will be described in detail with reference to the accompanying uses in automotive bicycle.

Fig. 1-Fig. 4 represents one embodiment of the invention.

Earlier with reference to Fig. 1, clutch outer member body 5 is installed in a side of motor (not shown), in the clutch chamber 6 that in this clutch outer member body 5, forms, take in the bent axle 7 of motor and can relatively rotate around this bent axle 7, and be bearing in the output gear 8 on the bent axle 7 and be arranged on overrunning clutch 9 and centrifugal clutch 10 between bent axle 7 and output gear 8 indirectly, output gear 8 is engaged on the reduction gear 11 that is connected with the gearbox (not shown).

On the bent axle 7, columnar bearing shell 12 is housed, one end and the bearing shell 12 that will be arranged on the lug boss 13a cylindraceous on the input link 13 of the component part that belongs to centrifugal clutch 10 by spline join like that, lug boss 13a is incorporated on the bent axle 7, in the end of bent axle 7, with nut 14 lug boss 13a is clamped in and bearing shell 12 between, output gear 11 is by bearing shell 12, be supported on the bent axle 7, and bent axle 7 rotates freely relatively.

With reference to accompanying drawing 1,2, overrunning clutch 9 has: the lug boss 13a of input link 13; And gear 15 that with output gear 11 be meshed coaxial with lug boss 13a is the columnar output link 16 of a shape; Along a plurality of roller bearing keys 17 that dispose on the circumferencial direction between lug boss 13a and the output link 16 separated by a certain intervally; Be installed in the spring 18 on the outer edge side of each roller bearing key 17.

On the circumferencial direction of the outer peripheral surface of lug boss 13a, be provided with a plurality of recesses 29 inward at intervals.The outer peripheral surface of the inner peripheral surface of output link 16 and lug boss 13a joins, and on the inner peripheral surface of this output link 16, is provided with and recess 19 corresponding a plurality of recesses 20 outward inward.

Recess 19 inward is made of the engaging piece inward 21 and the plane of inclination inward 22 that can be meshed with the inboard of roller bearing key 17.Wherein an end of plane of inclination 22 and inward engaging piece 21 is connected, simultaneously from circumferencial direction one side (downside of Fig. 2) towards lug boss 13a, to foreign side position towards radial direction, inner engaging piece 21, can join with the outer surface of the about quarter turn in inboard of roller bearing key 17, and form circular-arc.

Outer recess 20 is to be connected with by the accommodation section 23 that roller bearing key 17 integral body all can be taken in into and an end and accommodation section 23, from circumferencial direction one side towards lug boss 13a, to towards the radial direction inner side, and the outer lateral incline 24 that tilts with roller bearing key 17 can be held under the arm into external engagement portion 25 formations 21 in inner mesh portion, that be connected with mutually with the other end of outer lateral incline 24.For avoiding roller bearing key 17 to contact with the outer peripheral surface of lug boss 13a, then the shape of accommodation section 23 has adopted and can accommodate the into whole shape of roller bearing key.25 of the engaging pieces in the outside adopted can and inner mesh portion 21 between hold the same arc shape of roller bearing key 17 under the arm.

On the periphery of the axial intermediate portion of each roller bearing key 17, what be provided with ring-type respectively is solid ditch 26.Spring 18 is spring wire to be bent under the free state of no external force effect two ends almost be connected to become circular shape, from the outside be solid be in the solid ditch 26 at all roller bearing keys 17.When spring is solid on all roller bearing keys 17 time, spring 18 is in a kind of state that two ends are left, and the spring under this state is being brought into play and allowed each roller bearing key 17 be closely attached on elastic force effect on the inner recess 19.

On output link 16,, on the inner peripheral surface of output link 16, have the annular groove 27 of taking in spring 18 for allowing the change in location that moves the spring 18 that produces of corresponding roller bearing key 17.

According to such overrunning clutch 9, when direction shown in the arrow 28 is rotated in Fig. 2, when the direction that promptly allows output link 16 be meshed with roller bearing key 17 along the outside engaging piece 25 that makes outer recess 20 is rotated, the revolution of output link 16, under the state below the revolution of determining by the elastic force of spring 18, roller bearing key 17 is clamped between the inner mesh portion 21 of the outside engaging piece 25 of outer recess 20 and inner recess 19, and power is transmitted between the lug boss 13a with relative bent axle 7 in relative rotation at output link 16.That is, overrunning clutch is in the transferring power state.When bent axle 7, be lug boss 13a, when beginning to rotate with the rotating speed that exceeds output link 16, each roller bearing key 17, to overcome the elastic force of spring 18, taken in the accommodation section 23 of outer recess 20, thereby cut off the transmission of power between output link 16 and lug boss 13a, the rotation of corresponding bent axle 7, lug boss 13a dallies.

With reference to accompanying drawing 1, centrifugal clutch 10 is made of following part: is the input link 13 that bent axle 7 links to each other by lug boss 13a with outlet side; Being connected in outlet side is the output link 16 of output gear 8; Input link 13 relatively, relatively move within the limits prescribed along axial direction, but can not make in relative rotation the outer transmission body 30 that is connected with input link 13 around axis; The rotating part housing 31 that is connected with outer transmission body 30; Be arranged on the trochoid gear pump 32 between input link 13 and the output link 16; The revolution of corresponding input link 13 increases and improves the centrifugal control valve 33 of the flow resistance of the working solution that flows to trochoid gear pump 32; Can force to drive the clutch separation operation equipment 34 of this centrifugal control valve 33.

Input link 13 is made up of following part: be fixed on the lug boss 13a on the bent axle 7; In the plane of the spin axis that is orthogonal to bent axle 7, be disc-shape, the driver blade 13b that is connected as a single entity with the end of lug boss 13a; The outstanding intermediate portion that is arranged on this driver blade 13b is located, and becomes the cylindrical part 13c of opposition side position with lug boss 13a.One end of input link 13 and driver blade 13b one side promptly become the face of opposition side to be slidingly connected with the position of cylindrical part 13c.

Outer transmission body 30 is by connecting board 30d, the cardinal extremity of the cardinal extremity of the cardinal extremity of the 30a of urceolus portion, inner cylinder portion 30b and the 30c of intermediate cylinder portion between 30a of urceolus portion and the inner cylinder portion 30b is combined and constitutes.On the most advanced and sophisticated side (left end side among Fig. 2) of the 30c of intermediate cylinder portion, be provided with chimeric recess 30f by the stepped part 30e that closes on driver blade 13b.The cylindrical part 13b energy seal fluid ground of inner cylinder portion 30b and input link 13 is chimeric, and the outer circumference portion of driver blade 13b can cooperate on seal fluid ground with the chimeric recess 30f of the 30c of intermediate cylinder portion.Therefore, between the inner cylinder portion 30b of outer transmission body 30 and the 30c of intermediate cylinder portion and between driver blade 13b and the outer transmission body 30, formed the sealing liquid chamber 35 of a ring-type.One end of the one or more connection shafts 29 that parallel with the axis of bent axle 7 is pressed into and is fixed in the driver blade 13b, the other end of this coupling shaft 29 can be outside axial direction be embedded in slidably the connection board 30d of transmission body 30.Therefore, outer transmission body 30 though can not relatively rotate, can relatively move along axial direction, and be connected on the driver blade 13b.

Rotating part housing 31 is discoideus, the outer circumferential face of inner circumferential surface and output link 16 is slidingly connected, cooperating of the end of the outer circumference portion of rotating part housing 31 and the 30a of urceolus portion of outer transmission body 30, adopt the liquid seal formula to cooperate, and, rotating part housing 31 and outer transmission body 30 are coupled together by a plurality of bolts 36.

On the rotating part housing 31, be the chimeric recess 30f that is provided with the 30c of intermediate cylinder portion that is embedded in outer transmission body 30 integratedly, and have near and be opposite to the cylindrical part 31a of the face of driver blade 13b, this cylindrical part 31a have one with the outer circumferential face of output link 16 or the inner peripheral surface of eccentric shape, and around output link 16.With respect to the driver blade 13b of outer transmission body 30 and rotating part housing 31, along the displacement of axial direction, in the scope that two faces that are limited in driver blade 13b and the cylindrical part of the end difference 30e of outer transmission body 30 and rotating part housing 31 are joined.

The pump case 37 of trochoid gear pump 32 is made up of driver blade 13b, output link 16 and rotating part housing 31.By reading in the pump chamber 38 that pump case 37 constituted, accommodate can not relative conjugate pump pivotally with output link 16 internal gear 39 and with the cylindrical part 31a of rotating part housing 31 can be relatively pivotally in conjunction with and the external gear 40 of the pump that is meshed with the internal gear 39 of pump.

Internal gear 39 along pump is slightly thicker than the axial length of the cylindrical part 31a that is positioned at rotating part housing 31 with the thickness of the spin axis direction of the external gear 40 of pump.

In conjunction with reference to accompanying drawing 3,4.Another side at driver blade 13b promptly is close on the face of sealing liquid chamber 35, be provided with the action that utilizes trochoid pump 32, the trickle of pump chamber 38 be directed to the exhaust port 41 of sealing liquid chamber 35 and the working liquid body of sealing liquid chamber 35 sent into the suction port 42 of pump chamber 38.

The shape of suction port 42, having adopted the spin axis with driver blade 13b is the circular shape at center.The shape of centrifugal control valve 33, the flat circular shape that has then adopted a face with driver blade 13b to be slidingly matched.One end of centrifugal control valve 33 is by 29 revolutions of the coupling shaft between driver blade 13b and the outer transmission body 30 supporting possibly.Centrifugal control valve 33 shown in Fig. 3 solid line, can rotate between position of opening suction port 42 and the position of closing suction port 42 as shown in phantom in Figure 3.On coupling shaft 29, rotatably support has valve lever 43, and valve lever 43 has plate portion 43a, and this plate portion 43a is relative with the outer side surface of the inner cylinder portion 30b of outer transmission body 30, joins in the end of tossing about with centrifugal control valve 33 of inner cylinder portion 30b simultaneously.Valve lever 43 and outside be provided with the torsion spring 44 that is wrapped on the pin 29 between the inner cylinder portion 30b of transmission body.This torsion spring 44 can add to valve lever with power, makes centrifugal control valve 33 along opening suction port 42 1 side shiftings, allows simultaneously as the 43a of fishplate bar portion, towards the direction of the outside that deviates from inner core 30b, is bringing into play the resilient force of this spring.

The outer side surface of rotor 30 is combined with its part is embedded in frame 45 in the inner cylinder portion 30b outside.

Clutch separation operation equipment 34 is made of following part: with the outer end facing to valve lever 43 as the 43a of fishplate bar portion, when passing inner cylinder portion 30b and frame 45, have the push strut 46 of the compression face 46a that tilts to the inner along its radial direction with can move freely; Bearing 47 with foreign steamer 47a, foreign steamer 47a contacts with compression face 46a, simultaneously can be chimeric with frame 45 movably along axial direction; By bearing 47, can move vertically and can around rotational be supported in separating plate 48 on the frame 45; Be arranged on and the operating device (not shown) between cam mechanism 49.

Cam mechanism 49 comprises: be in same axis with bent axle 7 and be installed in adjustment bolt 50 on the clutch outer member body 5; Lug boss 51a is screwed together in the stationary cam dish 51 of adjusting bolt 50; The movable cam dish 52 that is being supported rotationally by lug boss 51a; Be inserted in the thrust ball 55 between the recess vis-a-vis 53,54 of two raised plate 51,52.In order to stop the rotation of stationary cam dish 51, the standstill locking pin 56 that cardinal extremity is fixed on the stationary cam dish 51 is embedded on the clutch outer member 5.In addition, movable raised plate 52 coincides with separating plate 48, and for preventing to relatively rotate between separating plate 48 and the movable cam dish 52, the pin 57 that cardinal extremity is fixed in separating plate 48 is embedded on the movable cam dish 52.

According to such clutch separation operation equipment 34, as allow only in accordance with regulations the angle rotation of movable cam dish 52 of cam mechanism 49, relatively rotating then along with two cam disks 51,52, thrust ball 55 will be climbed along the inclined-plane of two recesses 53,54, with movable cam dish 52, towards the direction pushing of leaving stationary cam dish 51.Therefore, the compression face 46a of the foreign steamer 47a of bearing 47 pushing push strut 46 makes push strut 46 side shifting outside axially.Valve lever 43 is pushed depression bar 46 and pushes away thus, makes to be positioned at the centrifugal control valve 33 of closing under suction port 42 states and to rotate along the direction of opening suction port 42.

Below, relevant this embodiment's effect is described.Utilize rotatablely moving that the kick-type starter (not shown) obtains, by output gear 8, shown in arrow among Fig. 2 28, pass to the output link 16 of overrunning clutch 9 like that, then with output link 16 together, the internal gear 39 of trochoidal curve 32 rotates, though the pump of trochoid pump 32 can be worked, but centrifugal control valve 33, elastic force effect because of torsion spring 44, be in the position of opening suction port 42, the flow resistance of the working solution that pump chamber 38 and sealing liquid chamber are 35 a little less than because the pressure in the pump chamber 38 is less, trochoid pump 42 will be in idling conditions.On the other hand, output link 16 makes the outside engaging piece 25 of its outer recess 20, along rotating with the direction of roller bearing key 17 engagements, state below the regulation revolution of determining by the elastic force of spring 18, roller bearing key 17 will be held under the arm between the inside engaging piece 21 of the outer gearing portion 25 of outer recess 20 and inner recess 19, thereby power obtains transmitting between output link 16 and relative bent axle 7 can not the lug boss 13a of counterrotating input link 13.Be the state of overrunning clutch 9 in transferring power, the power of above-mentioned kick-type starter is passed to bent axle 7, makes engine start.

After the engine start, when bent axle 7 is that the rotating speed of the lug boss 13a of input link 13 is when beginning to surpass the rotating speed of output link 16, each roller bearing key 17 will overcome the elastic force of spring 18, accommodated in the accommodation section 23 of outer recess 20, thereby cut off transmission of power by overrunning clutch 9, at this moment, come the power of free axis 7 will not be passed to output link 16.

At this moment, though can make the driver blade 13b rotation of input link 13 by the power of bent axle 7 outputs, but be in low state below the idle revolutions at the revolution of driver blade 13b, act on the elastic force of the centrifugal force of centrifugal control valve 33 less than torsion spring 44, suction port 42 is in open mode, under this state, along with rotating part housing 31 rotates simultaneously with driver blade 13b, outside transmission body 40 changes successively to the engaging position of inner transmission body 39, by trochoid pump pump is had an effect, because suction port 42 and exhaust port 41 all are in open mode, the flow resistance of working solution is very little, trochoid pump 32 change idling conditions, power will not pass to output link 16.

When the revolution of motor reaches idle revolutions when above, along with the driver blade 13b of the driver blade 13b of input link 13 rotates with higher revolutions, the centrifugal force that acts on centrifugal control valve 33 increases, and control valve 33 will overcome the elastic force of spring 44, rotates to closing suction port 42 1 sides.Thus, along with the discharge capacity increase of pump 32, suction port 42 is closed, the increase of the flow resistance of working solution raises the pressure of pump chamber 38 and sealing liquid chamber 35, because reaction force, rotating power is passed to the internal gear 39 of pump, be output link 16, make automotive bicycle begin starting.

When the rotating speed of motor further improves, increase along with centrifugal force, centrifugal control valve 33 will move the position of Close All suction port 42, because the discharge capacity of pump 32 increases and the full cut-off of suction port 42, the pressure of liquid sealing chamber 35 increases, outer transmission body 30, it is rotating part frame 31, relative driver blade 13b, within the limits prescribed, can relatively move along axial direction, and, because that the length of the cylindrical part 31a of rotating part frame 31 is set to is only more a little bit smaller than the thickness of the internal gear 39 of pump and external gear 40, so utilize the high pressure in the sealing liquid chamber 35, rotating part housing 31 will move to the direction of the internal gear 39 of pump and external gear 40 being pushed to driver blade 13b one side, because the surface friction drag effect that this thrust produces, the power of passing to output link 16 increases.Along with the internal gear 39 and the external gear 40 of pump is pushed to driver blade 13b one side, the gap between internal gear 39 and external gear 40 and driver blade 13b disappears, thereby the Vent that has reached working solution leaks and reduces the purpose that the working efficiency of pump improves.

The revolution of the ratio of revolutions of output link 16 regulation will be low state under during engine braking, along with overrunning clutch 9 becomes power delivery status, load acts on motor, can obtain the state of engine braking.In addition, when the revolution of output link 16 is crossed above motor system under the regulation revolution, because centrifugal control valve 33 is in the valve position that closes of closing suction port 42, the flow resistance of working solution is higher, therefore, rely on the very high reaction force that brings of pressure in the pump chamber 38, from internal gear 39,, drive bent axle 7 by external gear 40, rotating part housing 31, driver blade 13b and lug boss 13a with output link 16 rotating pumps, in view of the above, can obtain the engine braking state.

Further, when when automotive bicycle is walked, carrying out variable speed operation,, centrifugal control valve 33 is worked on the direction of opening suction port 42 according to clutch separation operation equipment 34.Promptly when centrifugal control valve 33 is in the position of Close All suction port 42,, the outer end that be opposite to push strut 46 approaching of valve lever 43 as the 43a of fishplate bar portion, connect board 43a by pushing away, make centrifugal control valve 33 to the direction revolution of opening suction port 42 with push strut 46.In view of the above, along with reducing of the flow resistance of working solution, the pressure in the pump chamber 38 reduce, and along with reaction force reduces, trochoid pump 32 becomes idle running, and the transmission of power of the trochoid pump 32 by 16 of bent axle 7 and output links then is cut off.In addition, in overrunning clutch 9, rely on centrifugal force, roller bearing key 17 is taken in the accommodation section 23, thereby be in the state that cuts off transmission of power, so the transmission of power between bent axle 7 and the output link 16 is cut off, thereby the speed change work of speed changer can be carried out sleekly.

In this centrifugal clutch 10, because trochoid gear pump constitutes compactly in the position near the spin axis of input link 13, its inertial mass is diminished, so the speed change can relax variable speed operation the time is impacted.And when variable speed operation, getting final product, so the steering force can reduce variable speed operation the time because of rotation only drives a centrifugal control valve 33.

More than embodiments of the invention are described, certainly the present invention never only only limits to the foregoing description, in not breaking away from the claim scope of present patent application, can carry out various design alterations.

In sum, be input link according to the present invention program's 1 described characteristic feature of an invention Driver blade and can not be connected between the outer transmission body on the input link structure with relatively rotating Become the sealing liquid chamber, by driver blade, output link and be connected rotor on the outer transmission body In the pump chamber of the pump case that shell forms, taken in output link and can not connect with relatively rotating The pump internal gear that is integrated and can relatively rotate ground rotor shell tabling be engaged in pump in External gear on the gear is because the centrifugal force change greatly can when rotating along with driver blade Closing the liquid that sealing liquid is indoor delivers to the centrifugal control valve of the suction inlet of pump chamber and is supported On driver blade, so can with trochoid pump, be arranged at compactly in the rotation of input link Near the heart, make the inertia mass when reducing variable speed operation, reach and alleviate speed change and produce Impact become possibility owing to during speed change, only rotate the centrifugal control valve of operation and get final product, so can Required operating physical force when reducing speed change.

According to the present invention program's 2 described characteristic feature of an inventions be, owing to can utilize the clutch branch Drive above-mentioned centrifugal control valve from operating means in the direction of opening suction inlet, so use Very light operating physical force just can obtain the clutch separation state at an easy rate.

That outer transmission body is along rotating shaft according to the present invention program's 3 described characteristic feature of an inventions Can be connected on the driver blade in the scope of line direction defined, so when passing with relatively moving When moving plate rotated at a relatively high speed, the high pressure indoor according to sealing liquid was along with internal gear Reach external gear and push to move back to the transfer part housing on driver blade one side direction, therefore, can increase Pass to the rotary power of output link aspect.

Claims (3)

1. centrifugal clutch is characterized in that it comprises:

With with the perpendicular plane of spin axis in be disc-shape driver blade (13b) constitute one and be connected the input link (13) of input side; Can rotate around identical spin axis with input link (13), and cylindrical shape, be slidingly connected at an end of axle and a face of driver blade (13b), and the output link that is connected with outlet side (16); Relatively input link (13) can not relatively rotate, and with input link (13) when being connected, and forms the outer transmission body (30) of sealing liquid chamber (35) between the another side of driver blade (13b); Have the interior week that becomes eccentric state with the periphery of output link (16), and have cylindrical part (31a), and be connected the rotating part housing (31) on the outer transmission body (30) around output link (16); By driver blade (13b), in the pump chamber (38) in the pump case (37) that output link (16) and rotating part housing (31) are formed, held the internal gear (39) that can not be connected the pump on the output link (16) with relatively rotating and with the cylindrical part (31a) of rotating part housing (31) tabling rotatably, and the external gear (40) of the pump that is meshed with the internal gear (39) of pump, will deliver to the drain that comes out by pump chamber (38) exhaust port (41) of sealing liquid chamber (35) and the suction port (42) that the working solution of sealing liquid chamber (35) is delivered to 38 li of pump chambers will be arranged at that driver blade (13b) is gone up and the trochoid gear pump (32) that constitutes; It is big that the centrifugal force of the corresponding generation effect in company with the rotation of driver blade (13b) becomes, and can produce action in the side that close suction port (42), and be supported near the centrifugal control valve (33) on the face of the driver blade (13b) of sealing liquid chamber (35).

2. centrifugal clutch according to claim 1 is characterized in that, it also has on the direction of opening suction port (42), can drive the clutch separation operation equipment (34) of centrifugal control valve (33).

3. centrifugal clutch according to claim 1 and 2 is characterized in that: outer transmission body (30) along being connected in driver blade (13b) in the predetermined range of its axial direction with relatively moving.