CN101482171A - Driven side pulley of v shaped belt type automatic transmission gear - Google Patents
Driven side pulley of v shaped belt type automatic transmission gear Download PDFInfo
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- CN101482171A CN101482171A CNA2009100020466A CN200910002046A CN101482171A CN 101482171 A CN101482171 A CN 101482171A CN A2009100020466 A CNA2009100020466 A CN A2009100020466A CN 200910002046 A CN200910002046 A CN 200910002046A CN 101482171 A CN101482171 A CN 101482171A
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Abstract
The invention provides a driven side pulley of V belt automatic speed changer, which endows an appropriate impulse force corresponding to the engine torque to a movable pulley from a driven pulley, to realize smooth automatic transmission during re-acceleration. The driven side pulley of V belt automatic speed changer is composed of a driven shaft, a fixed pulley half-body with a fixed hub, a clutch section rotating together with the fixed pulley half-body, a movable pulley half-body with a movable hub, and a torsion screw spring, wherein, a cam pin is formed at the peripheral of the fixed hub, and the movable hub forms a cam groove. The cam groove is formed in a tilt direction gradually close to the movable pulley surface side along the rotation direction of the movable hub, the fixed hub is inserted in the movable hub, and the cam pin penetrates the cam groove, the length direction end of the torsion screw spring is stopped and fixed at the movable pulley half-body, and the other end is stopped and fixed to the clutch section, under a state that the torsion screw spring is applied a torsion along the coiling direction to have an elastic restoring force beforehand.
Description
Technical field
The present invention relates to a kind ofly in the slave end belt wheel, give the suitable thrust corresponding to movable pulley, the slave end belt wheel of the V of the self-shifting smoothly belt automatic transimission when realizing quickening again with engine torque.
Background technique
General in the slave end belt wheel of V belt automatic transimission, exist to possess based on slave end movable pulley side cam and fixed pulley side pin and will change into the V belt automatic transimission (CVT) of mechanism's (torque cam mechanism) of axial push power with the part of transmission power, the spy opens flat 5-60192 communique and discloses a kind of mechanism of the two end part of thrust spring (helical spring) being fixed in clutch plate (clutch plate) and movable pulley respectively that constitutes.
Open in flat 5-60192 number the spy, when reduction speed ratio from high-speed region state (TOP) when low-speed region state (LOW) shifts, in the slave end belt wheel, the restoring force of the sense of rotation of torsion-coil spring, by the axial push power that produces that engages of the pin of the cam of movable pulley side and fixed pulley side, become the power that applies to the power (thrust) that movable pulley relative fixed belt wheel is relatively moved.Cam is to be formed at the hub portion of movable pulley and the slotted hole groove that forms of the axioversion shape of this hub portion relatively.From the high-speed region state to the process of low-speed region state transitions, movable pulley relative fixed belt wheel rotates relatively under the high-speed region state, flank of cam (inner peripheral surface) butt of the slotted eye shape of the pin of fixed pulley side and movable pulley side and the pushing thereon.
And from the high-speed region state during to the low-speed region state transitions, the axial pushing force by spring makes movable pulley to the fixed pulley side shifting.At this moment, flank of cam (inner peripheral surface) in aforementioned movable pulley side, be the axial power along hub portion from the pin joint component with power F axioversion that be subjected to of aforementioned fixed pulley side, promptly axial force F x becomes the power (with reference to Fig. 8 (C)) of movable pulley to the fixed pulley side shifting that makes.
Under the low-speed region state, helical spring two end part are fixed on clutch plate and movable pulley respectively, when from the low-speed region state during to the high-speed region state transitions, rotate relatively by movable pulley relative fixed belt wheel and clutch plate, can make helical spring accumulate the restoring force of reversing, this restoring force from the high-speed region state to the transfer action of low-speed region state, act on the sense of rotation identical, become the power that applies based on action of cam to the thrust of movable pulley with movable pulley.
In disclosed prior aries such as the spy opens flat 5-60192 number, there is problem points shown below.At first, for the shape of the cam 100a of movable pulley side, exist various examples, have with curve (circular arc) shape of the rectilinear form of the axioversion of the hub portion of movable pulley 100, same and axioversion or form the situation of broken line shape.In these examples, the relative F of axial force F x becomes small amount (with reference to Fig. 8 (C)).Therefore, in the cam 100a of the shape that forms above-mentioned example, the thrust of movable pulley 100 is often not enough, and the pushing force of its compression direction that need be by helical spring 200 in shortage is appended and compensated.But, because the pushing force of the compression direction of helical spring 200 and engine torque are irrelevant for constant, so, having relative engine torque in the pushing force is unnecessary portions, and this becomes the compression of friction between frictional loss, band and belt wheel, belt rubber, the reason of the unfavorable condition such as aging that causes of stretching.
And, and before being with 300 abrasion, V compares, abrasion backs V reduces with 7300 width, reduces (with reference to Fig. 8 (C)) at the roll diameter of driving side band.Therefore, at slave end, it is big that the roll diameter of band becomes, and at this moment, movable pulley is near fixed pulley, the result, and the state that is provided with of torsion-coil spring also changes.
Under the situation that V reduces because of abrasion with 300 width, in driving side belt wheel mechanism 500 since belt wheel do not narrow down at interval, so the V band diameter that joins with belt wheel reduces.Accompany with it, in the slave end belt wheel, make belt wheel narrow down at interval and V band diameter becomes big (with reference to Fig. 8 (B)) based on the axial push power (compression direction) of spring.That is, the cam of the movable pulley of slave end is further to the fixed pulley sideway swivel.And, when from the high-speed region state during to the low-speed region state transitions, the position of the low-speed region state before movable pulley 100 is positioned at the band abrasion, the power of the torsional direction of spring is 0.
Therefore, because in keeping out of the way width, movable pulley is to rotating in the opposite direction with the side of accumulating elastic restoring force, so, spring to reverse opposite direction expansion, accumulated negative restoring force.Thereby after the deceleration during to the low-speed region state transitions, the transmission capacity that can produce the slave end belt wheel reduces this unfavorable condition.
Summary of the invention
The objective of the invention is to, a kind of automatic speed changing smoothly when realizing quickening again is provided, can suppress again acceleration and reduce and in the slave end belt wheel, give the V belt automatic transimission of the suitable thrust corresponding with engine torque to movable pulley.
Given this, in order to solve above-mentioned problem, the inventor has carried out scrutinizing repeatedly, found that the invention by technological scheme 1 can solve above-mentioned problem, technological scheme 1 relates to a kind of slave end belt wheel of V belt automatic transimission, by driven shaft, fixed pulley half with stationary hub portion, movable pulley half with movable hub portion, the clutch portion of together rotating with the aforementioned fixation pulley half, constitute with torsion-coil spring, described stationary hub portion has formed cam pin in periphery, described movable hub portion has formed cam path, aforementioned cam path is formed on sense of rotation along aforementioned movable hub portion gradually to the near true dip direction of aforementioned movable pulley face side joint, the aforementioned fixation hub portion is inserted into aforementioned movable hub portion and aforementioned cam pin and inserts and lead in the aforementioned cam path, aforementioned torsion-coil spring reverses and has in advance under the state of elastic restoring force being applied in along coiling direction, length direction one end is blocked only is fixed on aforementioned movable pulley half, and the other end is blocked only is fixed on aforementioned clutch portion.
Invention by technological scheme 2 has solved above-mentioned problem, the invention of this technological scheme 2 relates to a kind of slave end belt wheel of V belt automatic transimission, in the above-described configuration, the diametric high-dipping that axially becomes close this movable hub portion of the aforementioned relatively movable hub portion of aforementioned cam path.Invention by technological scheme 3 has solved above-mentioned problem, the invention of this technological scheme 3 relates to a kind of slave end belt wheel of V belt automatic transimission, in the above-described configuration, aforementioned cam path becomes the axial gentle dip near aforementioned movable hub portion near the diametric high-dipping that becomes to axial in the zone of aforementioned movable pulley face side near this movable hub portion in the zone away from aforementioned movable pulley face side.
Invention by technological scheme 4 has solved above-mentioned problem, and the invention of this technological scheme 4 relates to a kind of slave end belt wheel of V belt automatic transimission, and in the above-described configuration, the high-dipping of aforementioned cam path zone is approximate broken line shape with the gentle dip zone.Invention by technological scheme 5 has solved above-mentioned problem, the invention of this technological scheme 5 relates to a kind of slave end belt wheel of V belt automatic transimission, in the above-described configuration, the high-dipping of aforementioned cam path zone forms the approximate circle arc shape continuously with the gentle dip zone.
In the invention of technological scheme 1, aforementioned torsion-coil spring is applied at the coiling direction of coil and reverses, under aforementioned fixation pulley half and immediate low-speed region state of movable pulley half or halted state, length direction one end of aforementioned torsion-coil spring is blocked only is fixed in aforementioned movable pulley half, and the other end is blocked only is fixed in aforementioned clutch portion.Thus, because aforementioned movable pulley half closer moves towards the aforementioned fixation pulley half, so, can be suppressed at from the high-speed region state when the low-speed region state transitions, torsion-coil spring reduces in the restoring force of the sense of rotation generation of aforementioned movable pulley half, descends thereby can suppress acceleration again.
If be described in detail above-mentioned effect, then before V band abrasion the high-speed region state, be that aforementioned movable pulley half is left from fixed pulley half under the state at interval, accumulate reversing and two elastic energys that the compression of coil causes of coiling direction in the aforementioned torsion-coil spring, produce elastic restoring force at sense of rotation equidirectional with movable pulley half.Like this, by apply the torsion-coil spring that produces by the movable pulley half under the aforementioned high-speed region state common reverse the elastic restoring force that causes and based on the aforementioned elastic restoring force of reversing of initially reversing setting that is applied in advance, the elastic force that can prevent torsion-coil spring reduces, and can carry out movable pulley half moving to fixed pulley half rapidly.
And, in the abrasion of V band broad ways and after attenuating, when movable pulley half arrival is regional with the portion of keeping out of the way near in moving of fixed pulley half, aforementioned torsion-coil spring is set the minimizing suppress the power that applies to the elasticity of the sense of rotation of movable pulley half by aforementioned initially reversing, and can keep out of the way movable pulley half the moving to the fixed pulley half side in the portion zone reliably.When the slave end belt wheel from the high-speed region state during to the low-speed region state transitions, the volume of the V band in the slave end belt wheel is hung diameter expansion, movable pulley half arrives keeps out of the way the portion zone, further near to the fixed pulley half side joint, produce the situation at the interval that must dwindle fixed pulley half and movable pulley half sometimes.Therefore, consider the further abrasion of V bandwidth direction, between fixed pulley half and movable pulley half, preestablished and kept out of the way the portion zone.
At this moment, for this shift action of keeping out of the way the movable pulley half in the portion zone, reversed the elastic restoring force of accumulating owing to exist aforementioned torsion-coil spring because of what the coiling direction at coil applied in advance, so, even the abrasion of the width direction of aforementioned V band fully make progress, also can remedy fully from the elastic restoring force deterioration of high-speed region state, and can prevent that again acceleration reduces to the torsion-coil spring of low-speed region state.
Invention according to technological scheme 2, the axial high-dipping that axially becomes this movable hub portion by the aforementioned relatively movable hub portion of aforementioned cam path, the face that makes the cam path of the cam pin of stationary hub portion side and movable hub portion side be in contact with one another at first approaches along the direction of the sense of rotation of movable hub portion, can make the component of cam path thus from the power of cam pin acceptance, even movable pulley half further increases to the power of the axis of fixed pulley half side shifting, can fully assist the elastic restoring force of aforementioned torsion-coil spring, carry out movable pulley half well to the moving of fixed pulley half side, thereby can extremely successfully carry out from of the transfer of high-speed region state to the low-speed region state.
Invention according to technological scheme 3, because aforementioned cam path becomes the diametric high-dipping near this movable hub portion to axial in the approaching zone of aforementioned movable pulley half, in zone, become axial gentle dip near aforementioned movable hub portion away from aforementioned movable pulley half, so, can not only carry out rapidly from of the transfer of high-speed region state to the low-speed region state, and can prevent applying to the unnecessary power of cam, therefore, can avoid with pushing force excessive, thereby improve acceleration when quickening again.
Above-mentioned effect is described as follows.When movable pulley half relative fixed pulley half is rotated relatively, the belt tension that V band makes the rotation of slave end belt wheel especially reduces the process from the middling speed zone state to the high-speed region state along with shifting and change to high-speed region state (TOP) to intermediate speed region state (MID) and then from the middling speed zone state from low-speed region state (LOW).By aforementioned cam path axially becoming in movable hub portion in the approaching zone of aforementioned movable pulley half near diametric high-dipping, can be rapidly from the high-speed region state to the intermediate speed region state transitions, compared with the pastly can further increase the power that cam path is accepted from cam pin.And, by in zone, becoming the axial gentle dip of aforementioned movable pulley away from aforementioned movable pulley half, can be lenitively from the middling speed zone state to the low-speed region state transitions, compared with the past, can prevent that the power that cam path is accepted from cam pin from becoming big.Therefore, can prevent that driven pulley from producing unnecessary band pushing force, can prevent with frictional loss and the compression of the friction between belt wheel, rubber, aging etc.
According to the invention of technological scheme 4, be approximate broken line shape by the high-dipping of aforementioned cam path is regional with the gentle dip zone, can carry out rapidly can promptly carrying out from of the transfer of high-speed region state to the intermediate speed region state, can make again acceleration good.According to the invention of technological scheme 5, can be continuously and successfully carry out the transfer of high-speed region state, intermediate speed region state, low-speed region state, can relax the impact of the variation that is accompanied by each speed change zone.
Description of drawings
Fig. 1 (A) is with by the V after the abrasion under the low-speed region state, make movable pulley half in keeping out of the way the portion zone with the summary view of the approaching state of fixed pulley half, (B) be by the band of the V before the abrasion under the low-speed region state, making the summary diagrammatic sketch of the approaching state of movable pulley half and fixed pulley half, (C) is the summary diagrammatic sketch under the high-speed region state.
Fig. 2 (A) be movable pulley half, torsion-coil spring and clutch portion slightly show stereogram, (B) be the amplification stereogram of movable side hub portion and torsion-coil spring, (C) be the plan view of torsion-coil spring.
Fig. 3 (A) is the summary diagrammatic sketch of the part section of slave end belt wheel, (B) is the stereogram of slave end belt wheel, (C) is the enlarged view of overlooking of cam path and cam pin position.
Fig. 4 (A)～(C) is the action diagram of torsion-coil spring.
Fig. 5 (A) is the stereogram of movable side hub portion, (B) be the amplification plan view of the cam path of high-dipping zone portion and the gentle dip zone portion mode of execution that forms polyline shaped, (C) be the amplification plan view that high-dipping zone portion and gentle dip zone portion form the cam path of circular-arc mode of execution.
Fig. 6 (A) is the vertical profile side view of slave end belt wheel, (B) is the major component enlarged view of (A).
Fig. 7 (A) is the plan view of support plate, (B) is the vertical profile side view of (A), (C) is the summary diagrammatic sketch that torsion-coil spring is supported the state of plate supporting.
Fig. 8 (A) is the summary diagrammatic sketch of the formation of prior art, (B) represents to roll up the summary diagrammatic sketch of hanging the state that changes because of the abrasion of V band, (C) is that diagrammatic sketch is omited in the amplification of the slave end belt wheel of prior art.
Description of reference numerals
1 fixed pulley half
12 stationary hub portions
13 cam pins
2 movable pulley half
22 movable hub portion
23 cam paths
3 driven shafts
4 clutch portions
5 torsion-coil springs
Embodiment
Below, the present invention will be described in conjunction with the accompanying drawings.Fig. 1 is the figure of expression driven pulley of the present invention mechanism.This driven pulley mechanism mainly is made of fixed pulley half 1, movable pulley half 2, clutch portion 4 and torsion-coil spring 5 shown in Fig. 1, Fig. 2 (A), Fig. 6 (A) etc.This fixed pulley half 1 is made of the stationary hub portion 12 and the cam pin 13 of flat cone shape fixing belt wheel face 11, hollow shape.Cam pin 13 is installed on aforementioned fixation hub portion 12.And movable pulley half 2 is made of the movable hub portion 22 and the cam path 23 of flat cone shape movable pulley face 21, hollow shape.This cam path 23 be formed slopely into the sense of rotation along aforementioned movable hub portion 22 near to aforementioned movable pulley face side joint.
The stationary hub portion 12 of this fixed pulley half 1 is rotated and is supported on driven shaft 3 freely as shown in Figure 6.Particularly, by bearings such as needle bearing and ball bearings, the stationary hub portion 12 of aforementioned fixation pulley half 1 is rotatably freely supported on aforementioned driven shaft 3.Aforementioned fixation hub portion 12 is inserted in the aforementioned movable hub portion 22 in the mode of axial unanimity, aforementioned movable pulley half 2 relative aforementioned fixation pulley half 1 are slided and are rotated freely mutually, according to movable pulley face 21 and aforementioned fixation belt wheel face 11 near and away from mode move, make two to enlarge at interval and dwindle freely.And, between fixed pulley half 1 and movable pulley half 2, set in advance and kept out of the way portion's region S.
This keeps out of the way portion's region S is to be with 7 in the width direction abrasion, when the width direction size shortens as V, in order to be with 7 with good this V of pressure clamping, and can make movable pulley half 2 to the zone of fixed pulley half 1 side shifting (with reference to Fig. 1, Fig. 3 (A)) by aforementioned fixation belt wheel face 11 and movable pulley face 21.This keep out of the way portion's region S be V cause because of abrasion with 7 sizes that the situation of abrasion or width direction take place be reduced to trace during in, the zone that aforementioned movable pulley face 21 does not enter.In the cam path 23 of aforementioned movable hub portion 22, insert the cam pin 13 of aforementioned fixation hub portion 12, movable pulley half 2 is rotated with cam path 23 relative aforementioned fixation pulley half 1 in the length range of cam path 23 relatively based on aforementioned cam pin 13, simultaneously according to moving axially near the mode that reaches away from aforementioned fixation pulley half 1 side.This is kept out of the way portion's region S and also is present in aforementioned cam path 23, is to be with 7 in the width direction abrasion, when the width direction size shortens, the zone that cam pin 13 moves as V.
Another distolateral clutch portion 4 (with reference to Fig. 6) that is equipped with in the stationary hub portion 12 of driven pulley.This clutch portion 4 is by formations such as clutch plate 41, clutch weight 42, support plate 43 and clutch outer members (clutch outer) 44.On aforementioned clutch sheet 41, respectively by pivot suspension pin 45 pivot suspensions of equal number link a plurality of clutch weights 42,42 are arranged ....Clutch outer member 44 is fixedly connected on the shaft end of aforementioned driven shaft 3.And aforementioned clutch sheet 41 is fixed in the shaft end of aforementioned fixation hub portion 12.The rotating force that is delivered to aforementioned fixation pulley half 1 is delivered to aforementioned clutch sheet 41 by aforementioned fixation hub portion 12, then, clutch weight 42,42 ... based on interior all sides butt of centrifugal force and clutch outer member 44, transmit rotating force to driven shaft 3 from this clutch outer member 44.
Be installed on relatively aforementioned clutch sheet 41 pivot suspension pin 45,45 ..., according to cover the clutch weight 42 that swing installs freely, the mode of 42... is equipped with support plate 43 (with reference to Fig. 6, Fig. 7).This support plate 43 by stop rings such as circlip or riveted joint etc. be fixed in the pivot suspension pin 45,45 that is installed on aforementioned clutch sheet 4 ... front end.This support plate 43 play to the clutch weight 42,42 that is installed in aforementioned clutch sheet 41 ... the effect of supporting.
Be formed with through hole 43a in the central position of aforementioned support plate 43, around through hole 43a, be formed with the 43b of spring-loaded portion.The 43b of this spring-loaded portion bloats towards aforementioned clutch sheet 41 sides and to form the approximate cylinder shape shown in Fig. 7 (B), surrounds the part of the helical portion 51 of aforementioned torsion-coil spring 5.Aforementioned clutch shell 44 is similar to cup-shaped shape as shown in Figure 6.The periphery of this clutch outer member 44 is the approximate circle tubular, be installed on swing clutch weight 42,42 ... lining and its in all contacts side surfaces.
The back side of the movable pulley face 21 of aforementioned movable pulley half 2, and the clutch plate 41 or support plate 43 of aforementioned clutch portion 4 between, torsion-coil spring 5 is installed.Particularly, the back side of aforementioned movable pulley face 21 and and aforementioned movable hub portion 22 between dispose aforementioned cap assembly 6, by this cap assembly 6 aforementioned torsion-coil spring 5 is installed.This torsion-coil spring 5 is formed with hook portion 52,52 at the length direction two ends of helical portion 51 shown in Fig. 2 (A), (B).
This hook portion 52 forms as near suitably crooked the end of the wire rod that constitutes helical portion 51, as to become near linear axle sheet, is formed on same direction as the hook portion 52 of this sheet and the flexible direction (length direction) of said spiral shape portion 51.Aforementioned hook portion 52 is formed on flexible direction (length direction) two ends of helical portion 51.Aforementioned cap assembly 6 is at cylindric 61 the length direction one distolateral spring carrier 62 that is formed with, and this spring carrier 62 is formed with flange shape 62a according to the mode of extending in aforementioned cylindric 61 diametric(al).
This torsion-coil spring 5 as shown in Figure 6, be configured in the outer circumferential side of cap assembly 6, the clutch plate 41 or support plate 43 butts of one distolateral and aforementioned clutch portion 4 of its helical portion 51, the distolateral hook portion 52 of one by block only be fixed on the perforation that is formed at aforementioned clutch sheet 41 or support plate 43 poroid etc. by hooking part 46.And spring carrier 62 butts of another distolateral and aforementioned cap assembly 6 of the length direction of torsion-coil spring 5, its another distolateral hook portion 32 by block only be fixed on the movable hub portion 22 that is formed at aforementioned movable pulley half 2 or movable pulley face 21 by hooking part 24.
Aforementioned torsion-coil spring 5 plays according to the mode elastic force-applying of movable pulley half 2 near aforementioned fixation pulley half 1, and makes this movable pulley half 2 to the direction identical with its sense of rotation effect of elastic force-applying rotationally.Here, the sense of rotation of the sense of rotation of aforementioned movable pulley half 2 and driven shaft 3 is same directions, and is the sense of rotation when accepting the rotation transmission by driving side belt wheel and V with 7.This sense of rotation is the corresponding direction of direction of advancing with cart.The fixing belt wheel face 11 of aforementioned fixation pulley half 1, and the movable pulley face 21 of aforementioned movable pulley half 2 between volume hang with V and be with 7, the slave end belt wheel is with 7 to be rotated transmission by driving side belt wheel and aforementioned V.
Then, according to Fig. 4 the effect of the torsion-coil spring among the present invention 5 and (also comprising cam pin 13) cam path 23 is described.In Fig. 4, a is that the V of low-speed region state (LOW) stops (fixing) position before with 7 abrasion, b is that the V of low-speed region state (LOW) stops (fixing) position after with 7 abrasion, C be high-speed region state (TOP) stop (fixing) position, d is the fixed position of the torsion-coil spring 5 of clutch portion 4 sides.
If the power that the applies production process to the thrust of 5 pairs of movable pulley half 2 of torsion-coil spring is described in detail, at first in Fig. 4 (A), be the process that shifts to low-speed region state (LOW) from high-speed region state (TOP) then.The position of the low-speed region state of movable pulley half 2 before V is with 7 abrasion, the caused elastic restoring force F1 that reverses that accepts from movable pulley half 2 is zero, but be the power that applies in advance before being provided with based on initially reversing the elastic restoring force F2 that sets T, non-vanishing.Therefore, if V with 7 abrasion in the scope of the portion of the keeping out of the way region S of cam path 23, then owing to rotating based on elastic restoring force F2, so, can not accumulate negative restoring force.Then, from the low-speed region state (LOW) of Fig. 4 (B) to the transfer of high-speed region state (TOP), accumulate positive elastic restoring force F1+F2.Then, from the high-speed region state (TOP) of Fig. 4 (C) to the transfer of low-speed region state (LOW), movable pulley half 2 is F1+F2 to the elastic restoring force of sense of rotation, can suppress to reduce to the power that applies of the thrust of movable pulley.
Below, the effect of torsion-coil spring 5 is described in detail.Aforementioned torsion-coil spring 5 is when being installed to the slave end belt wheel, and the coiling direction that is in said spiral shape portion 51 has applied the state that reverses in advance.This torsion-coil spring 5 has been applied in the state that reverses at coiling direction to be called initially to reverse and to set T.This initially reverses the torsional direction of setting among the T becomes the opposite direction of sense of rotation with aforementioned driven shaft 3 (and fixed pulley half 1, movable pulley half 2).That is, by setting reversing of T based on initially reversing, its elastic restoring force becomes the identical direction of sense of rotation with aforementioned driven shaft 3 (reaching fixed pulley half 1, movable pulley half 2).
Initially reverse the windup-degree θ of the torsion-coil spring 5 of setting T based on this, can according to the fixing belt wheel face 11 of aforementioned fixation pulley half 1, with the movable pulley face 21 of aforementioned movable pulley half 2 near state, and then consider to make aforementioned movable pulley half 2 decide with 7 in the width direction abrasion to the portion of the keeping out of the way region S of fixed pulley half 1 side shifting because of V.That is, aforementioned torsion-coil spring 5 being accumulated can make movable pulley half 2 keep out of the way the elastic restoring force of portion's region S towards fixed pulley half 1 side shifting.Therefore, be about 30 degree～45 degree as concrete windup-degree θ.
Be assembled into the clutch plate 41 or the support plate 43 of aforementioned movable pulley half 2 and clutch portion 4 by having applied the torsion-coil spring 5 that initially reverses setting T, even make this torsion-coil spring 5 when low-speed region state or halted state, also have the elastic restoring force F2 that rotates to the direction identical with the sense of rotation of driven shaft 3.When from the low-speed region state during to the high-speed region state transitions, aforementioned movable pulley half 2 relative aforementioned fixation pulley half 1 are relatively rotated, and accumulate the restoring force F1 that reverses in aforementioned torsion-coil spring 5.
And, owing in torsion-coil spring 5, accumulate the elastic restoring force F2 that sets T based on initially reversing arranged, so, from aforementioned movable pulley half 2 rotations when the high-speed region state transitions of low-speed region state, thereby can apply aforementioned elastic restoring force F1, the power that two restoring forces that aforementioned torsion-coil spring 5 accumulated reverse add up to, be restoring force (F1+F2), and, even V attenuates with 7 abrasion because of width direction, also can suppress movable pulley half 2 applies minimizing from power to the elasticity of sense of rotation.
And then, V attenuates with the 7 abrasion development because of width direction, the fixed pulley half 1 of low-speed region state and movable pulley half 2 usually near under the state, can't apply enough friction pressures with 7 to aforementioned V, portion's region S is kept out of the way in the mobile arrival of aforementioned in this case movable pulley half 2.Under this situation, the friction before V with 7 be under the low-speed region state by the caused restoring force F2 of reversing of torsion-coil spring 5, fixed pulley half 1 and movable pulley half 2 usually near being zero under the state, movable pulley half 2 can't carry out moving to the approaching of fixed pulley half 1 side in keeping out of the way portion's region S, but there is the restoring force F1 that is accumulated in advance by initially reversing setting T in the aforementioned torsion-coil spring 5, based on this restoring force F1, aforementioned movable pulley half 2 can be closely mobile to fixed pulley half 1 side joint in keeping out of the way portion's region S.
Then, the movable hub portion 22 of cam pin 13 and cam path 23 relative aforementioned movable pulley half 2 axially, form high-dipping in the diametric(al) of this movable hub portion 22.Movable pulley half 2 to fixed pulley half 1 near the process that moves in, the face that is in contact with one another at first by aforementioned cam pin 13 and aforementioned cam path 23 approaches along the direction of the sense of rotation of aforementioned movable hub portion 22, even cam path 23 is further increased to the power of fixed pulley half 1 side shifting from the component movable pulley half 2 of the power of cam pin 13 acceptance, can successfully carry out from of the transfer of high-speed region state to the low-speed region state.
By make cam path 23 with the approaching zone of aforementioned movable pulley half in be gentle dip zone portion 232 for high-dipping zone portion 231, in away from the zone of aforementioned movable pulley half 2, can promptly carry out from of the transfer of high-speed region state to the low-speed region state, and then can prevent applying of unnecessary power that cam pin 13 and cam path 23 cause, thus, can avoid excessive with 7 pushing force to V.In addition, when movable pulley half 2 relative fixed pulley half 1 were rotated relatively, V made the power F of driven pulley rotation along with shifting respectively and diminish (with reference to Fig. 5 (C)) to high-speed region state (FT) to intermediate speed region state (FL) and then from the middling speed zone state from the low-speed region state with 7.
Given this, in aforementioned cam path 23, by will forming high-dipping zone portion 231 with the approaching zone of aforementioned movable pulley half 2, can be rapidly from the high-speed region state to the intermediate speed region state transitions, compared with the past, can further increase the power Fx that cam path 23 is accepted from cam pin 13.In addition, by forming gentle dip zone portion 232 away from the zone of aforementioned movable pulley half 2, can be from the middling speed zone state lenitively to the low-speed region state transitions, the power Fx that cam path 23 receives from cam pin 13 is compared with the past can to prevent to become big (with reference to Fig. 8 (B), (C)).In sum, can carry out rapidly, and prevent the power that applies of the unnecessary power that cam path 23 and cam pin 13 cause, can avoid excessive with 7 pushing force thus V from of the transfer of high-speed region state to the low-speed region state.Therefore, can prevent with frictional loss, with the compression of the friction of belt wheel, rubber, aging etc.
In an embodiment of the present invention, the circumferential part 43b that has clutch support plate 43b by the helical portion 51 of relative torsion-coil spring 5, can prevent centrifugal force when helical portion 51 rotates because of the slave end belt wheel to the expansion of the diametric(al) of movable side hub portion 22, and the diametric center that can prevent torsion-coil spring 5 is from the driven shaft misalignment.Therefore, can reduce the vibration of slave end belt wheel.
Claims (5)
1, a kind of slave end belt wheel of V belt automatic transimission is characterized in that,
By driven shaft, fixed pulley half with stationary hub portion, movable pulley half with movable hub portion, the clutch portion of together rotating with the aforementioned fixation pulley half, constitute with torsion-coil spring, described stationary hub portion has formed cam pin in periphery, described movable hub portion has formed cam path, aforementioned cam path is formed on sense of rotation along aforementioned movable hub portion gradually to the near true dip direction of aforementioned movable pulley face side joint, the aforementioned fixation hub portion is inserted into aforementioned movable hub portion and aforementioned cam pin and inserts and lead in the aforementioned cam path, aforementioned torsion-coil spring reverses and has in advance under the state of elastic restoring force being applied in along coiling direction, length direction one end is blocked only is fixed on aforementioned movable pulley half, and the other end is blocked only is fixed on aforementioned clutch portion.
2, the slave end belt wheel of V belt automatic transimission according to claim 1 is characterized in that,
The aforementioned relatively movable hub portion of aforementioned cam path axially, become diametric high-dipping near this movable hub portion.
3, the slave end belt wheel of V belt automatic transimission according to claim 1 is characterized in that,
Aforementioned cam path becomes the axial gentle dip near aforementioned movable hub portion near the diametric high-dipping that becomes to axial in the zone of aforementioned movable pulley face side near this movable hub portion in the zone away from aforementioned movable pulley face side.
4, the slave end belt wheel of V belt automatic transimission according to claim 3 is characterized in that,
The high-dipping zone of aforementioned cam path is approximate broken line shape with the gentle dip zone.
5, the slave end belt wheel of V belt automatic transimission according to claim 3 is characterized in that,
The high-dipping zone of aforementioned cam path forms the approximate circle arc shape continuously with the gentle dip zone.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008005080 | 2008-01-11 | ||
| JP2008005080A JP4463858B2 (en) | 2008-01-11 | 2008-01-11 | V-belt type automatic transmission driven pulley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101482171A true CN101482171A (en) | 2009-07-15 |
Family
ID=40879406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100020466A Pending CN101482171A (en) | 2008-01-11 | 2009-01-08 | Driven side pulley of v shaped belt type automatic transmission gear |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4463858B2 (en) |
| CN (1) | CN101482171A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455251A (en) * | 2013-09-24 | 2015-03-25 | 现代自动车株式会社 | Belt tension adjustment apparatus for vehicles |
| CN105264268A (en) * | 2013-06-07 | 2016-01-20 | 丰田自动车株式会社 | Belt-type stepless transmission |
| WO2017036371A1 (en) * | 2015-08-28 | 2017-03-09 | 青岛海尔洗衣机有限公司 | Washing machine |
| CN104455251B (en) * | 2013-09-24 | 2018-08-31 | 现代自动车株式会社 | Vehicle belt tension-adjusting gear |
| TWI644043B (en) * | 2017-04-07 | 2018-12-11 | 光陽工業股份有限公司 | Pulley set for shifting mechanism |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013035086A (en) * | 2011-08-05 | 2013-02-21 | Tochio Yanagisawa | Belt grinder including belt with multiple projection parts for receiving grinding belt |
| CN106195176B (en) * | 2016-07-07 | 2018-04-24 | 常州东风无级变速器有限公司 | Cone disk type buncher |
| JP6605745B2 (en) * | 2016-09-27 | 2019-11-13 | 本田技研工業株式会社 | Drive pulley device for V-belt type automatic transmission |
-
2008
- 2008-01-11 JP JP2008005080A patent/JP4463858B2/en not_active Expired - Fee Related
-
2009
- 2009-01-08 CN CNA2009100020466A patent/CN101482171A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105264268A (en) * | 2013-06-07 | 2016-01-20 | 丰田自动车株式会社 | Belt-type stepless transmission |
| CN104455251A (en) * | 2013-09-24 | 2015-03-25 | 现代自动车株式会社 | Belt tension adjustment apparatus for vehicles |
| CN104455251B (en) * | 2013-09-24 | 2018-08-31 | 现代自动车株式会社 | Vehicle belt tension-adjusting gear |
| WO2017036371A1 (en) * | 2015-08-28 | 2017-03-09 | 青岛海尔洗衣机有限公司 | Washing machine |
| CN107923111A (en) * | 2015-08-28 | 2018-04-17 | 青岛海尔洗衣机有限公司 | Washing machine |
| EP3342920A4 (en) * | 2015-08-28 | 2019-04-10 | Qingdao Haier Washing Machine Co., Ltd. | Washing machine |
| CN107923111B (en) * | 2015-08-28 | 2020-02-07 | 青岛海尔洗衣机有限公司 | Washing machine |
| TWI644043B (en) * | 2017-04-07 | 2018-12-11 | 光陽工業股份有限公司 | Pulley set for shifting mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4463858B2 (en) | 2010-05-19 |
| JP2009168080A (en) | 2009-07-30 |
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| C06 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Open date: 20090715 |