CN1287929A - Slepless transmission arrangement - Google Patents
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- CN1287929A CN1287929A CN 00124482 CN00124482A CN1287929A CN 1287929 A CN1287929 A CN 1287929A CN 00124482 CN00124482 CN 00124482 CN 00124482 A CN00124482 A CN 00124482A CN 1287929 A CN1287929 A CN 1287929A
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Abstract
This invention provides a bearing structure of a continuously variable transmission holding bearing members of a primary shaft and asecondary shaft in regular positions against the tensile force of a belt, keeping an appropriate belt alignment, and improving the durability of the continuously variable transmission. A rotation shift mechanism 6 is stored in a housing member 8 fixed in a casing 1, an input end of a primary shaft 3 is connected to the rotation shift mechanism 6, the primary shaft 3 is rotatably supported to the housing member 8 via a bearing member 11, and radial positioning means 1b, 8b are provided between the housing member 8 and the easing 1 so as to be positioned on the outer circumference of the bearing member 11, so that the tensile force of the belt 17 is directly received by the positioning means 1b, 8b.
Description
The present invention relates to have the continuously variable unit of forward-reverse switching mechanism.
As the technology relevant, can enumerate for example belt-drive variable-speed transmission described in the flat 10-274319 communique of Japanese Patent Publication Laid-Open with this continuously variable unit.The speed-changing mechanism of this continuously variable unit, elementary axle of configured in parallel and secondary axle in housing, a chain of shape belt of extension between the elementary belt pulley and the secondary belt pulley that is located on secondary that are located on this elementary axle and constituting.Elementary belt pulley and secondary belt pulley are made of fixing wheel disc and movable wheel disc respectively, and movable wheel disc can lean on actr to move vertically.And wait the interval of adjusting each wheel disc by the oil pressure that supplies to actr, can infinitely change converter speed ratio.
And the propulsive effort of driving engine is successively via tor-con, as the input shaft of S. A., and by the forward-reverse switching mechanism that the planetary gear train of the outgoing side that is connected in input shaft is formed, above-mentioned speed-changing mechanism, differential gears etc. are delivered to driven wheel side.
From the rotation of the turbine of tor-con output, a side who switches to selectively in positive veer (working direction of vehicle) and the reverse direction (direction of retreat of vehicle) by the forward-reverse switching mechanism outputs to elementary.
Moreover concrete being constructed as follows.At first connecting input shaft on this turbine, this input shaft has sun wheel on its outgoing side periphery.Comprise miniature gears, tooth rest and gear ring in addition in planetary gear train, miniature gears is meshed with above-mentioned sun wheel, and this tooth rest is connected to the input side of elementary axle.Wherein, tooth rest can disconnect mutually via power-transfer clutch with input shaft and being connected, and the rotation of tooth rest can be limited by drg in addition.And can be the hand of rotation of tooth rest with respect to input shaft by individually controlling these power-transfer clutchs and brakeage, the hand of rotation of just elementary axle switches to positive veer or reverse direction.
Continuously variable unit described in the above-mentioned communique as shown in Figure 5, combines formation housing 101 to main casing 101a and sub-shell 101b.It is in the cup-shaped drg supporting base 104 at center that above-mentioned forward-reverse switching mechanism 102 is packed into elementary axle 103, and this drg supporting base 104 is configured in the main casing 101a under the state that is bearing in by bolt 105 on the sub-shell 101b.The input end of elementary axle 103 is connected in the tooth rest of forward-reverse switching mechanism 102, and can supported rotatably via bearing 106 by drg supporting base 104.
; as is generally known in belt-drive variable-speed transmission; in order to prevent slipping of the belt belt pulley is applied very strong gripping power; become so the tension force of belt must increase and on elementary belt pulley and secondary belt pulley, to act on, support on elementary axle or the secondary bearing and also acting on very big load along the power of direction of closing mutually.On the other hand, as can be seen from the figure, though support elementary axle 103 an end (right-hand member among the figure) bearing 106 via drg supporting base 104 by sub-shell 101b cantilever supporting, but because above-mentioned belt tension, drg supporting base 104 is out of shape and the location dislocation of bearing 106, the result produces the deviation that belt aligns and the monolateral contact of belt takes place, and exists the early stage such problem of deterioration of the conical surface (belt contact surface) of belt or belt pulley.
In addition, this belt-drive variable-speed transmission becomes input shaft and is shared by two members on its structure.As concrete being constructed as follows.At first as shown in Figure 5, the reaction axle bearing seat 101c that is connected in sub-shell 101b extends to unillustrated tor-con side (right side among the figure) along the outside face of input shaft 107, and is supporting the stator of tor-con.And an end of input shaft 107 (right-hand member among the figure) is supported by sub-shell 101b via the unillustrated bearing that reacts axle bearing seat 101c and be located between this reaction axle bearing seat 101c and the input shaft 107.The other end of input shaft 107 (left end among the figure) is supported by drg supporting base 104 via bearing 106, elementary axle 103 and the bearing 27 that is located between this elementary axle 103 and the input shaft 107 in addition.
Here, above-mentioned reaction axle bearing seat 101c and drg supporting base 104 have been realized the location to sub-shell 101b.But because of bearing at an end (right-hand member among the figure) that supports input shaft 107, support the bearing 106 of an end (right-hand member among the figure) of elementary axle 103, be located on the bearing 27 between elementary axle 103 and the input shaft 107, in certain allowed band, comprising element precision error or assembly error, so these line of centers is inconsistent, the accuracy of alignment that exists input shaft 107 worsens such problem.Moreover in common assembling operation, be difficult to make the line of centers of these bearings consistent accurately mutually, always in the raising of the accuracy of alignment of input shaft 107, exist one restriction.
The object of the present invention is to provide a kind of tension force that can overcome belt and the bearing components of elementary axle or secondary axle is remained in the tram, by keeping the bearing arrangement that suitable belt aligns the continuously variable unit that improves durability, particularly belt-drive variable-speed transmission.Be to provide a kind of continuously variable unit that can guarantee the accuracy of alignment of S. A. in addition high-levelly.
To achieve these goals, the invention of claim 1, continuously variable unit is being accommodated in housing: comprise the elementary belt pulley that is located on the elementary axle, be located at secondary belt pulley on the secondary axle, hang and be connected between two belt pulleys and make the transmission of power between two belt pulleys become possible belt, the groove width that can make elementary belt pulley and secondary belt pulley relatively changes and infinitely adjusts the stepless speed changing mechanism of converter speed ratio; And a certain side who is connected in elementary axle or secondary axle, can disconnect bonded assembly power disconnecting mechanism to the input side element of power and outgoing side element, it is characterized in that wherein having: be fixed in the housing and and accommodate power disconnecting mechanism, can support the box component of an above-mentioned side's who is connected with power disconnecting mechanism axle via bearing components rotatably in inside; And vertical and comprising on the line of bearing components or its vicinity with a side axle, and be located between box component and the housing, bear the load-carrying unit of power of the opposing party's side effect of elementary axle in the box component or secondary.
Because on elementary axle or secondary axle, acting on the tension force of the belt of continuously variable unit, so on the box component of their side's of supporting axle, also acting on the power of pointing to the opposing party's a side from a side beam warp by bearing components.Therefore on this box component, need be enough to overcome the tension force of belt and the rigidity that bearing components remained in the tram.The power on this box component of acting on is by vertical and comprising on the line of bearing components or its vicinity with a side axle, and the load-carrying unit that is located between box component and the housing directly bears, and preventing the distortion of box component and bearing components is remained in the tram becomes possibility.
In addition, the invention of claim 2 is characterised in that load-carrying unit is formed at the position facing to the opposing party's axle one side at least.
Thereby, be connected in the occasion of elementary axle at rotary switching mechanism, though on the box component that supports this elementary axle via bearing components, acting on the power of pointing to secondary axle one side, but because load-carrying unit is formed at the position facing to secondary axle one side at least, so positively block the power that acts on secondary axle one side in the box component by load-carrying unit, can remain in the tram to bearing components.In addition, be connected in the occasion of secondary axle at rotary switching mechanism, load-carrying unit is formed at the position facing to elementary axle one side at least, blocks the power that acts on elementary axle one side in the box component by load-carrying unit equally, can remain in the tram to bearing components.
In addition, the invention of claim 3 is characterised in that, load-carrying unit is made of the peripheral part of the interior perimembranous of housing and the box component that cooperates with perimembranous in this.
Thereby, can other part be set and constitute load-carrying unit simply.
In addition, the invention of claim 4, continuously variable unit has: accept propulsive effort and the S. A. that rotates from drive source; The train of gears that is connected in aforementioned S. A. is arranged, by this train of gears can the switching controls output shaft the rotary switching mechanism of hand of rotation; And from aforementioned drive source drives power speed change and be delivered to the speed-changing mechanism of output shaft infinitely, it is characterized in that wherein possessing: a distolateral supporting member of aforementioned S. A. is supported in rotation freely; Accommodate aforementioned rotary switching mechanism, and another distolateral housing member of aforementioned S. A. is supported in rotation freely; And be located between aforementioned supporting member and the aforementioned housing member, realize of the installation of aforementioned supporting member, and realize the retaining element of its location aforementioned housing member.
Thereby because supporting member directly locatees box component, so along with the installation of supporting member, can make bearing center consistent accurately by these two members, the accuracy of alignment of S. A. greatly improves.Can also reduce to be connected in the meshing error of the train of gears (forward-reverse switching mechanism) of S. A. in addition whereby.Moreover preferably, for example can using as retaining element, seam connects (sleeve is connected with seam) or locating dowel pin combination.
The present invention has following effect:
As above explanation according to the continuously variable unit of the invention of claim 1, since vertical with a side of elementary axle or secondary axle and comprise support this side spool bearing components on interior line or its vicinity, and between box component and housing, load-carrying unit is set, so the distortion of the drg supporting base 8 that produces owing to belt tension is inhibited, can remain in the tram to supporting member, keep suitable belt and align, thereby improve the durability of continuously variable unit.
In addition, according to the continuously variable unit of the invention of claim 2,, bearing components is remained in the tram so can overcome the tension force of belt because load-carrying unit is formed at the position facing to the opposite side of elementary axle or secondary axle at least.
In addition, according to the continuously variable unit of the invention of claim 3,, constitute load-carrying unit simply so can other part be set because load-carrying unit is directly fixed on the interior perimembranous of housing to the casing peripheral part.
In addition,, only depend on the installation exercise of housing member and supporting member just can improve the accuracy of alignment of S. A. greatly, be suitable for its batch manufacturing according to the continuously variable unit of the invention of claim 4.Improve the accuracy of mesh that is connected the train of gears on the S. A. in addition, exist the advantage of the generation that can also suppress its abnormal sound.
Brief description of drawings
Fig. 1 is the cutaway view of the continuously variable unit of expression embodiment.
Fig. 2 is the partial enlarged drawing of the continuously variable unit among Fig. 1.
Fig. 3 is the part sectional view that is illustrated in the assembled state of the drg supporting base in the housing.
Fig. 4 is the instruction diagram of formation position of the circumferencial direction of expression seam peripheral part.
Fig. 5 is the part sectional view of assembled state of drg supporting base of the belt-drive variable-speed transmission of expression prior art.
15 level belt pulleys of perimembranous (load-carrying unit) 2 power shaft 3 elementary axle 6 forward-reverse switching mechanisms (power disconnecting mechanism), 7 elementary belt pulley 8 brake supporting base (box component) 8b seam peripheral parts (load-carrying unit), 9 reaction 14 level axles of axle bearing seat (supporting member) 11 bearings (bearing components), 17 metal belts, 26,27 bearings 43 insert bead (retaining element) L0 vertical line L 1 the 1st imaginary line L2 the 2nd imaginary line in the explanation 1 housing 1 b seam of label
The following describes the embodiment that the present invention specializes as the belt-type continuously variable unit that is used for FF (front engine front drive) vehicle.
Fig. 1 illustrates the section of belt-drive variable-speed transmission, and this continuously variable unit is connecting tor-con 4 at input side (right side among the figure), and unillustrated known pump impeller is connected in the bent axle 5 of driving engine.
In the housing 1 of continuously variable unit, accommodating above-mentioned tor-con 4, one end (right-hand member among the figure) spline is connected in the input shaft (S. A.) 2 of the unillustrated turbine of this tor-con 4, be connected in the other end (left end among the figure) of this input shaft 2, forward-reverse switching mechanism 6 as the power disconnecting mechanism that hereinafter addresses, be connected in the efferent of this forward-reverse switching mechanism 6, elementary axle 3 with input shaft 2 arranged coaxial, be configured in the elementary belt pulley 7 on this elementary axle 3, secondary axle 14 with elementary axle 3 configured in parallel, be configured in the secondary belt pulley 15 on the secondary axle 14, and extension is connected in the endless metal belt 17 between elementary belt pulley 7 and the secondary belt pulley 15 etc.
Aforementioned forward-reverse switching mechanism 6 as shown in Figure 2, have double-pinion type planetary gear train 31, power-transfer clutch 32 and drg 33, have the function that the rotation of input shaft 2 is switched to one of positive veer or reverse direction and output to elementary axle 3, and as the input shaft 2 of the input side element of power with as disconnection bonded assembly function between the elementary axle 3 of the outgoing side element of power.
On the other end (right-hand member among the figure) of input shaft 2, form the sun wheel 34 that constitutes planetary gear train 31, on this sun wheel 34, meshing a side miniature gears 35.The opposing party's miniature gears 36 miniature gears 35 and gear ring 37 therewith is meshed, and the tooth rest 38 of these miniature gearss 35,36 of swivel bearing is incorporated into an end (right-hand member among the figure) of above-mentioned elementary axle 3.Tooth rest 38 can disconnect via 32 pairs of input shafts of power-transfer clutch 2 and connecting in addition.The 39th, accommodate the power-transfer clutch guard ring of 32 the unillustrated piston of operating the clutch, constitute clutch actuator with piston.
Here the forward-reverse switching mechanism 6, are housed in as formation to be fixedly installed in the drg supporting base 8 of box component of the columnar housing member substantially in the housing 1, and above-mentioned drg 33 is installed between the inner peripheral surface and gear ring 37 of drg supporting base 8.Gear ring 37 is fixed with respect to drg supporting base 8 by the action of drg 33, and its rotation is limited.
Therefore, drg supporting base 8 supports an end (right-hand member among the figure) side of elementary axle 3 via ball-bearing casing 11, and the other end (left end among the figure) portion of supporting input shaft 2 via ball-bearing casing 11, elementary axle 3 and bearing 27.
This external contractring brake supporting base 8 is installed with the reaction axle bearing seat (supporting member) 9 that will seal this opening towards the tor-con casing 1c opening of accommodating tor-con 4 on drg supporting base 8.
Reaction axle bearing seat 9 oriented above-mentioned clutch actuators are supplied with the hydraulic circuit that hydraulic oil is used, and an end (right-hand member among the figure) side of input shaft 2 is being supported in rotation freely on the other hand.As concrete being constructed as follows.At first react axle bearing seat 9 and form the through hole 40 that input shaft 2 was inserted in the central, and have an end (left end among the figure) to be matched with to form the inner peripheral surface of this through hole 40 and be projected into axle sleeve 25 in the tor-con casing 1c along the outside face of input shaft 2.Moreover on the periphery of this axle sleeve 25, connecting the stator (all not drawing) of tor-con 4 via free-wheel clutch.And between interior week of axle sleeve 25 and input shaft 2, clamping bearing 26.Just react axle bearing seat 9 and supporting an end (right-hand member among the figure) side of input shaft 2 via axle sleeve 25 and bearing 26.
As shown in fig. 1, elementary belt pulley 7 is by constituting with the elementary axle 3 integrally formed fixedly wheel disc 7a and the movable wheel disc 7b that can be provided with movably on elementary axle 3, movable wheel disc 7b make can lean on hydraulic actuator 13 with respect to fixing wheel disc 7a approaching away from.Secondary belt pulley 15 and aforementioned elementary belt pulley 7 are same, by constituting with the secondary axle 14 integrally formed fixedly wheel disc 15a and the movable wheel disc 15b that can on secondary axle 14, be provided with movably, movable wheel disc 15b make can lean on hydraulic actuator 16 with respect to fixing wheel disc 15a approaching away from.
Extension is connected in endless metal belt 17 between elementary belt pulley 7 and the secondary belt pulley 15 and is clamped in the groove 18 of the vee shape that fixedly forms between wheel disc 7a, the 15a and movable wheel disc 7b, 15b, and the rotation of elementary belt pulley 7 is delivered to secondary belt pulley 15.Movable wheel disc 7b, the 15b of elementary belt pulley 7 and secondary belt pulley 15 driven all the time mutually in reverse direction by separately hydraulic actuator 13,16, and the opposing party's effective diameter reduces to follow a side's of elementary belt pulley 7 and secondary belt pulley 15 effective diameter to increase simultaneously with it.When the effective diameter of elementary belt pulley 7 is bigger than the effective diameter of secondary belt pulley 15, converter speed ratio is to high speed (overdriving) side shifting, want hour than the effective diameter of secondary belt pulley 15 at the effective diameter of elementary belt pulley 7 on the contrary, converter speed ratio is to low speed one side shifting.In the present embodiment, constitute stepless speed changing mechanism by elementary belt pulley 7, secondary belt pulley 15 and metal belt 17.
Connecting transmission driven wheel 20 at secondary axle 14 upper splines, this transmission driven wheel 20 is connected in as the transfer driven gear 22 on the transmission shaft 21 of output shaft with spline and is meshed.The whole output gear 21a that forms on transmission shaft 21, this output gear 21a is meshed with the final gear 23a of box of tricks 23, and box of tricks 23 is connected with unillustrated left and right sidesing driving wheel via axle drive shaft 24.
On the other hand, the assembled state of 8 pairs of housings 1 of drg supporting base shown in Figure 3, shown in the figure like this, drg supporting base 8 forms flange portion 8a on tor-con one side (right side among the figure) periphery, this flange portion 8a is overlapped with the peripheral part 9a of reaction axle bearing seat 9, is fixed in installation portion 1a in the housing 1 jointly by bolt 10.
Form the seam peripheral part 8b of flange-shaped on elementary belt pulley 7 one sides (left side among the figure) periphery of above-mentioned drg supporting base 8, it is vertical and comprise bearing 11 on interior line L0 that this seam peripheral part 8b is configured in line of centers with elementary axle 3.In other words, seam peripheral part 8b is configured in and comprises bearing 11 on the line of centers vertical surface of interior elementary axle 3.Moreover vertical line L 0 is set in the scope between the axial two ends of bearing 11.This outer stopper peripheral part 8b also can not be configured on the vertical line L 0, also can be configured in vertical line L 0 near.
Fig. 4 illustrates the formation position of the circumferencial direction of the front shape of drg supporting base 8 and seam peripheral part 8b, and the formation position of seam peripheral part 8b is described according to this figure.At first from axially, suppose that the line of the centre of gration of centre of gration by elementary axle 3 and secondary axle 14 is the 1st imaginary line L1.Then supposition is vertical with the line of centers of elementary axle 3 with this imaginary line L1, and the line of the centre of gration by elementary 3 is the 2nd imaginary line L2.If one the 2nd imaginary line L2 is divided into secondary axle 14 1 sides and anti-secondary axle 14 1 sides to the periphery of drg supporting base 8 thus, then seam peripheral part 8b crosses over the gamut of anti-secondary axle 14 1 sides and forms, and extends to secondary axle 14 1 sides by angle [alpha] and angle beta.
That is to say that seam peripheral part 8b forms on the position facing to secondary axle 14 1 sides by angle [alpha] and angle beta.
And this seam peripheral part 8b matches with perimembranous 1b in the seam that forms on the inwall of housing 1, shown in shade line among Fig. 4, in this seam perimembranous 1b in a circumferential direction with the corresponding position of seam peripheral part 8b on form.In the present embodiment, the seam portion that is made up of perimembranous 1b in these seam peripheral part 8b and the seam constitutes load-carrying unit.
In belt-drive variable-speed transmission, all the time belt pulley 7,15 is applied very strong gripping power in order to prevent that metal belt 17 from skidding by hydraulic actuator 13,16, the tension force of metal belt 17 is along elementary axle 3 and secondary axle 14 mutual approaching directive effects whereby.And, act on the drg supporting base 8 via bearing 11 so point to the above-mentioned belt tension of secondary axle 14 1 sides because an end (right-hand member among the figure) portion of above-mentioned elementary axle 3 is supported by drg supporting base 8 via bearing 11.Therefore the rigidity that on drg supporting base 8, requires to be enough to overcome the tension force of metal belt 17 and bearing 11 is remained in the tram.
Here the seam peripheral part 8b of drg supporting base 8 as mentioned above, under the state that secondary axle 14 1 sides are extended, matching, resist along the tension force of the metal belt 17 of secondary axle 14 directive effects by this extendible portion (part of angle [alpha] and angle beta) with perimembranous 1b in the seam of housing 1 one sides from the 2nd imaginary line L2.
That is to say in the present embodiment, the drg supporting base 8 not only flange portion 8a of tor-con 4 one sides is fixed in installation portion 1a in the housing 1, and by on bearing 11 by can supporting elementary axle 3 rotatably and the vertical line L 0 vertical with the line of centers of elementary axle 3 and housing 1 between the seam peripheral part 8b that forms be positioned housing 1.That is to say that the seam portion that perimembranous 1b forms in the seam peripheral part 8b and seam thus locatees an end wall 8c of drg supporting base 8 along radial direction.Therefore the belt tension of the secondary axle of sensing 14 directions that acts on an end (right-hand member among the figure) portion of elementary axle 3 is blocked by this seam portion via an end wall 8c of bearing 11 and drg supporting base 8, and the distortion of a drg supporting base 8 so a belt tension is inhibited.
Therefore the occasion that only is fixed in sub-shell 101b on tor-con one side cantilever ground compared with the routine drg supporting base 104 like that of the prior art of Fig. 5 is come, the rigidity of drg supporting base 8 improves by leaps and bounds and its distortion is inhibited, can positively remain in the tram to bearing 11, the result keeps suitable belt all the time and aligns, prevent because the problem that the monolateral contact of metal belt 17 causes, the early stage deterioration of the conical surface of metal belt 17 or belt pulley 7,15 for example, and then can improve the durability of stepless speed changing mechanism.
Because as shown in fig. 1, the other end (left end among the figure) of elementary axle 3 is bearing in housing 1 one sides via bearing 31 on the other hand, so be necessary to be that benchmark is located an end (right-hand member among the figure) of elementary axle 3 along radial direction with housing 1 also.In the present embodiment, because as mentioned above by the 1b of seam portion, 8b is directly 8 pairs of housings of drg supporting base, 1 location, so via sub-shell 101b the occasion of 104 couples of main casing 101a of drg supporting base (housing 1 that is equivalent to present embodiment) location is come like that compared with the prior art example shown in Fig. 5, the positional precision of drg supporting base 8 improves, one end (right-hand member among the figure) of elementary axle 3 is that benchmark is located along radial direction with housing 1, the two ends of the elementary axle 3 of result are that benchmark is located with housing 1 all, the accuracy of alignment of elementary axle 3 improves, and also has above-mentioned belt to align and can further optimize such effect.
In addition in the present embodiment as shown in Figure 3, the installation of reaction axle bearing seat 9 pairs of drg supporting bases 8 is by the cooperation to the open end of drg supporting base 8, and just seam connects (retaining element) and carries out.As concrete being constructed as follows.At first on reaction axle bearing seat 9, with the face-off face of drg supporting base 8 on form the insertion bead 43 of annular, the opening edge of drg supporting base 8 forms and inserts mouthful.And the insertion bead 43 of reaction axle bearing seat 9 matches with the opening edge of drg supporting base 8.
If connect 9 pairs of drg supporting base 8 combinations of reaction axle bearing seat by seam as mentioned above, then along with its installation, also realize simultaneously these location.Thereby, can make the center 0 of an end side of the elementary axle 3 that supports by drg supporting base 8 by this location
1End side center 0 with the input shaft 2 that supports by reaction axle bearing seat 9
2Consistent accurately.The accuracy of alignment of input shaft 2 greatly improves whereby owing to can reduce and the meshing error of the integrally formed sun wheels 34 of input shaft 2 and miniature gears 35, so can realize aspect the reduction of the bad abnormal sound that causes of these engagement more favourable.
Though in the present embodiment, specialize as for motor vehicle continuously variable unit of FF, but the vehicle form of utilization does not add qualification, can for example specialize in the bearing arrangement of for motor vehicle continuously variable unit of FR (front engine rear drive) yet.
Moreover stepless change machine of the present invention is not limited to vehicle usefulness, can certainly apply to other purposes.
Though in addition in the above-described embodiments, be taken as the gamut from anti-secondary axle 14 1 sides extends to secondary axle 14 1 sides by angle [alpha] and angle beta from the 1b of seam portion, the 8b of drg supporting base 8 bearing loads, an extension assigns to block the formation of the tension force of metal belt 17 thus, but in a word if this seam 1b of portion, 8b at least from the 2nd imaginary line L2 to the 14 1 side settings of secondary axle, just on position, be provided with, just can obtain and above-mentioned same action effect facing to secondary axle 14 1 sides.Thereby, also can be for example shown in long and two-short dash line among Fig. 4, form notch part 41 and partly remove seam peripheral part 8b in anti-secondary axle 14 1 sides of seam peripheral part 8b.If constitute like this, then can also obtain to realize the expendable weight of drg supporting base 8, and then realize the such effect of expendable weight of continuously variable unit.
During the seam that drg supporting base 8 and reaction axle bearing seat 9 are combined of this external the foregoing description is connected, forms on which of drg supporting base 8 and reaction axle bearing seat 9 and insert mouthful, insertion bead 43 is arbitrarily, does not add special qualification.And then this seam connects also and can also can be realized by screwing in by the locating dowel pin realization.
Though moreover be illustrated with regard to belt-drive variable-speed transmission in the above-described embodiments, but the seam bonded assembly structure between above-mentioned drg supporting base 8 and the reaction axle bearing seat 9 is not limited to belt-drive variable-speed transmission, promptly be used in other forms of continuously variable unit, for example also can obtain same action effect on cycloid formula continuously variable unit etc.
Though and then enumerated the forward-reverse switching mechanism 6 of the handoff functionality of disconnection linkage function with input shaft 2 and elementary axle or hand of rotation in the above-described embodiments as power disconnecting mechanism, also can be taken as and for example only have as start clutch the formation of disconnection linkage function between the input side element of power and the outgoing side element.Moreover also can constitute this forward-reverse switching mechanism 6 with step change mechanism with a plurality of fixedly gears.Forward-reverse switching mechanism 6 is not limited to the planetary gear train 31 of embodiment in addition, also can be the switching mechanism of single pinion type or synchromesh.
Though in the above-described embodiments forward-reverse switching mechanism 6 is located at the input side of elementary axle 3 in addition, support the input end of elementary axle 3 by drg supporting base 8, but also can be taken as the outgoing side (right side among the figure) that for example forward-reverse switching mechanism 6 is located at secondary axle 14, support the mouth of secondary axle 14 by the drg supporting base of accommodating this forward-reverse switching mechanism 6 via bearing.
Though the propulsive effort that is taken as in the above-described embodiments in addition from driving engine is delivered to 6 bonded assembly input shafts 2 of forward-reverse switching mechanism via tor-con 4, but for example also can be taken as from the propulsive effort of driving engine and be delivered to the formation of input shaft 2, also can be taken as the formation of carrying out transmission of power via tor-con 4 via magnetic clutch.In this occasion also be, as long as accommodating forward-reverse switching mechanism 6 and can supporting rotatably via bearing 11 between the drg supporting base 8 and housing 1 of box component of input end of elementary axle 3, be provided as 8 pairs of housings 1 of drg supporting base just passablely, can obtain the action effect same with the foregoing description along the seam portion of the setting element of radial direction location.
The explanation of embodiment though more than be through with, form of the present invention is not limited thereto an embodiment.
Claims (4)
1. continuously variable unit, this continuously variable unit contains in housing:
Comprise the elementary belt pulley that is located on the elementary axle, be located at secondary belt pulley on the secondary axle, hang and be connected between two belt pulleys and make the transmission of power between two belt pulleys become possible belt, the groove width that can make aforementioned elementary belt pulley and aforementioned secondary belt pulley relatively changes and infinitely adjusts the stepless speed changing mechanism of converter speed ratio, and
Be connected in a certain side of above-mentioned elementary axle or above-mentioned secondary axle, can disconnect bonded assembly power disconnecting mechanism to the input side element of power and outgoing side element,
It is characterized in that wherein having:
Be fixed in the above-mentioned housing and accommodate above-mentioned power disconnecting mechanism in inside, can support the box component of an above-mentioned side's who is connected with above-mentioned power disconnecting mechanism axle rotatably via bearing components, and
Comprising on the line of above-mentioned bearing components or its vicinity with an above-mentioned side's the vertical while of axle, and be located between above-mentioned box component and the above-mentioned housing, bear the load-carrying unit of power of the opposing party's side effect of above-mentioned elementary axle in the above-mentioned box component or above-mentioned secondary axle.
2. the continuously variable unit described in claim 1 is characterized in that wherein
Described load-carrying unit is formed at the position facing to above-mentioned the opposing party's axle one side at least.
3. the continuously variable unit described in claim 1 is characterized in that wherein
Described load-carrying unit is made of the peripheral part of the interior perimembranous of above-mentioned housing and the above-mentioned box component that cooperates with perimembranous in this.
4. continuously variable unit has:
Accept propulsive effort and the S. A. that rotates from drive source,
The train of gears that is connected in aforementioned S. A. is arranged, by this train of gears can the switching controls output shaft the rotary switching mechanism of hand of rotation, and
From aforementioned drive source drives power speed change and be delivered to the speed-changing mechanism of above-mentioned output shaft infinitely, it is characterized in that wherein possessing:
A distolateral supporting member of aforementioned S. A. is supported in rotation freely,
Accommodate aforementioned rotary switching mechanism, and rotate another the distolateral housing member that supports aforementioned S. A. freely, and
Be located between aforementioned supporting member and the aforementioned housing member, realize of the installation of aforementioned supporting member, and realize the retaining element of its location aforementioned housing member.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP257676/99 | 1999-09-10 | ||
| JP25767699A JP3700757B2 (en) | 1999-09-10 | 1999-09-10 | Continuously variable transmission |
| JPNO11-257676 | 1999-09-10 | ||
| JP283935/99 | 1999-10-05 | ||
| JPNO11-283935 | 1999-10-05 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101023996A Division CN100376824C (en) | 1999-09-10 | 2000-09-08 | Continuously variable transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1287929A true CN1287929A (en) | 2001-03-21 |
| CN1265109C CN1265109C (en) | 2006-07-19 |
Family
ID=17309568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00124482 Expired - Lifetime CN1265109C (en) | 1999-09-10 | 2000-09-08 | Slepless transmission arrangement |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3700757B2 (en) |
| CN (1) | CN1265109C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315121A (en) * | 2014-09-25 | 2015-01-28 | 洛阳睿能传动科技有限公司 | Box body of continuously variable transmission (CVT) of fuel vehicle |
| CN107869568A (en) * | 2016-09-23 | 2018-04-03 | 丰田自动车株式会社 | Variable v-belt drive for vehicle |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5274198B2 (en) * | 2008-10-20 | 2013-08-28 | アイシン・エィ・ダブリュ株式会社 | Belt type continuously variable transmission |
-
1999
- 1999-09-10 JP JP25767699A patent/JP3700757B2/en not_active Expired - Fee Related
-
2000
- 2000-09-08 CN CN 00124482 patent/CN1265109C/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315121A (en) * | 2014-09-25 | 2015-01-28 | 洛阳睿能传动科技有限公司 | Box body of continuously variable transmission (CVT) of fuel vehicle |
| CN107869568A (en) * | 2016-09-23 | 2018-04-03 | 丰田自动车株式会社 | Variable v-belt drive for vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3700757B2 (en) | 2005-09-28 |
| CN1265109C (en) | 2006-07-19 |
| JP2001082564A (en) | 2001-03-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20060719 |