CN108506447A - A kind of contiuously variable transmission - Google Patents
A kind of contiuously variable transmission Download PDFInfo
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- CN108506447A CN108506447A CN201710102302.3A CN201710102302A CN108506447A CN 108506447 A CN108506447 A CN 108506447A CN 201710102302 A CN201710102302 A CN 201710102302A CN 108506447 A CN108506447 A CN 108506447A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 74
- 230000008859 change Effects 0.000 claims abstract description 136
- 230000007246 mechanism Effects 0.000 claims abstract description 37
- 238000003825 pressing Methods 0.000 claims abstract description 26
- 230000001360 synchronised effect Effects 0.000 claims description 14
- 230000006835 compression Effects 0.000 claims 1
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- 238000000034 method Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 13
- 230000008901 benefit Effects 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 8
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- 238000010586 diagram Methods 0.000 description 6
- 238000005096 rolling process Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/12—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/66—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/66—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings
- F16H2061/6604—Special control features generally applicable to continuously variable gearings
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- Mechanical Engineering (AREA)
- Friction Gearing (AREA)
Abstract
The present invention discloses a kind of contiuously variable transmission, which includes：Power transmission mechanism includes at least a power input part and a power output part；Speed change ring, around power transmission mechanism comprising：One ring center axis；And multiple conical shrapnels, it is set on ring center axis, multiple cone shrapnels can be rotated along ring center axis, around power transmission mechanism；Wherein, at least one conical shrapnel drives conical shrapnel to be rotated around power transmission mechanism by power input part；At least one cone shrapnel driving power output part rotation；And each conical shrapnel can be rotated centered on ring center axis；Variable-speed unit, including at least a pressing device, pressing device is set on the outside of speed change ring, and it is connected with speed change ring, it controls at least one conical shrapnel while rotated centered on by ring center axis, in the surface scrolls of power input part and/or power output part, to drive speed change ring to be moved along first direction.
Description
Technical field
The present invention relates to a kind of mechanical device contiuously variable transmissions can be applied to automobile and other passing powers.
Background technology
Automatic transmission mainly has electric-controlled mechanical automatic at present as automobile and the core component of other mechanical driving devices
Speed changer (AMT), hydraulic automatic speed variator (AT), double-clutch automatic gearbox (DCT), mechanical stepless automatic speed changer (CVT)
Four major class.Wherein, mechanical stepless automatic speed changer (CVT) is due to continuously variable, and power is sustainable in speed-change process
The features such as output, can make engine speed be maintained at most economical working region, realize automobile or similar under the same conditions
Oil consumption is minimum in type mechanical device, it is the gentlest and other effects to run.In addition, mechanical stepless automatic speed changer (CVT) also have than
Conventional transmissions are simple in structure, number of components is few, volume smaller, the advantages that weight is lighter.
Mechanical stepless automatic speed changer (CVT) mainly has V-type rubber belt type, V-type metal band type, multi-disc type, steel ball at present
A variety of constructions such as formula, idler wheel rotating disc type, chain-type.The mechanical stepless automatic speed changer (CVT) of mainstream is with band hydraulic pressure pressure at present
The V-type metal band type or chain-type of tight device, wherein what V-type metal tape or chain were conspired to create by multi-disc V-type steel disc or chain link.
However, existing mechanical stepless automatic speed changer (CVT) should be held due to V-type metal tape in speed-change process or chain
By tangential friction force to realize that power transmits, keep radial slidably to realize speed changing function again, to acting on steel disc or chain
Pressing force control on section is more demanding, therefore, is mainly used at present compared with low torque and with relatively low movenent performance requirement
In household vehicle.Can at least exist if in being applied to high torque and vehicle or instrument with higher motion performance requirement
Problems with：
1, transmission belt is easily damaged, therefore, more demanding to its material；
2, speed changer can not bear larger load；
3, transmission belt cannot be rapidly radially moved, therefore, it is impossible to meet the requirement of the quick speed change of vehicle；
4, the manufacturing process of speed changer is complicated.
Invention content
For the defects in the prior art, the object of the present invention is to provide a kind of contiuously variable transmissions.The contiuously variable transmission exists
Frictional resistance is small in speed-change process, quick speed change can be achieved.
A kind of contiuously variable transmission is provided according to an aspect of the present invention, and the contiuously variable transmission includes：Power transmission machine
Structure, the power transmission mechanism include at least a power input part and a power output part；Speed change ring, around the power
Transmission mechanism, and the speed change ring can move back and forth in a first direction, the speed change ring includes：One ring center axis；And
Multiple cone shrapnels, are set on the ring center axis, multiple conical shrapnels can along the ring center axis, around
The power transmission mechanism rotation；Wherein, at least one conical shrapnel is connected with the power input part, by institute
The power input part driving conical shrapnel is stated to rotate around the power transmission mechanism；At least one conical shrapnel
It is connected with the power output part, the power output part is driven to rotate；And each conical shrapnel can be with
It is rotated centered on the ring center axis；Variable-speed unit, the variable-speed unit include at least a pressing device, the pressing device
It is set on the outside of the speed change ring, and is connected with the speed change ring, at least one conical shrapnel of control is with institute
It is rolled while stating rotation centered on ring center axis, on the surface of the power input part and/or the power output part
It is dynamic, turned with the power output part for driving the speed change ring that the power transmission mechanism is moved, adjusted along the first direction
Speed.
Preferably, the variable-speed unit further includes：Speed change screw body is set on the outside of the speed change ring, the speed change
Screw body includes：Lead screw, the lead screw extend along the first direction；And feed screw nut, it is sheathed on the lead screw, and can
Move back and forth in a first direction along the lead screw；Speed changing control mechanism is connected with the lead screw, and the lead screw is driven to revolve
Turn, is moved in a first direction along the lead screw with controlling the feed screw nut；Wherein, the pressing device also with the lead screw
Nut is connected, and the pressing device can be with feed screw nut synchronizing moving in said first direction, to drive at least one
While a conical shrapnel rotates centered on by the ring center axis, in the power input part and/or institute
The surface scrolls for stating power output part drive the speed change ring to move in said first direction.
Preferably, the variable-speed unit includes two speed change screw bodies, two speed change screw body difference
The both sides of the speed change ring are set to, the lead screw of two speed change screw bodies is all connected with the speed changing control mechanism.
Preferably, the variable-speed unit includes two pressing devices, each pressing device include an idler wheel with
And a roller shaft, the roller housing are set on the roller shaft, each idler wheel and a feed screw nut and the change
Fast ring is connected, and can be moved along the roller shaft with the feed screw nut.
Preferably, each speed change screw body further includes a synchronous sprocket wheel, and the synchronous sprocket wheel is set to the change
The same end of fast screw body；The variable-speed unit further includes a silent chain for surrounding two synchronous sprocket wheels.
Preferably, the power input part includes an input shaft and the first cone pulley being sheathed on the input shaft,
First cone pulley is connected with the speed change ring, and at least drives at least one conical shrapnel rotation of the speed change ring；
The power output part includes an output shaft and the second cone pulley being sheathed on the output shaft, and described second
Cone pulley is connected with the speed change ring, and is rotated under speed change ring driving, wherein second cone pulley is bored with described first
Wheel is towards on the contrary.
Preferably, the size of first cone pulley is identical as the size of the second cone pulley, and the axis of first cone pulley
Line is parallel with the axis of the second cone pulley.
Preferably, the surface of first cone pulley and/or second cone pulley has groove.
Preferably, the contiuously variable transmission further includes a shell, the power transmission mechanism and variable-speed unit setting
In in the shell.
Compared with the prior art, contiuously variable transmission provided in an embodiment of the present invention controls speed change ring along the by variable-speed unit
The movement of one direction is to adjust the speed change that the rotating speed of the power output part of power transmission mechanism realizes contiuously variable transmission, wherein becomes
During speed, since speed change includes multiple conical shrapnels that can be rotated centered on ring center axis, speed change ring is
One direction is moved in the form of rolling on cone pulley (such as the first cone pulley, second cone pulley) surface during moving, compared to existing
Mechanical stepless automatic speed changer (CVT) steel band used in speed-change process slideably for, have frictional resistance compared with
It is small and the advantages that can realize quick speed change.Also, the speed change ring is also with contact area is big, service wear is small, lasts a long time
Advantage.In addition, the structure of the buncher is avoided using hydraulic compressing device complicated in existing contiuously variable transmission, thus
With manufacturing relatively simple, the advantages that cost is relatively low, and reliability is higher.
Description of the drawings
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon：
Fig. 1 is the cross section structure schematic diagram of the contiuously variable transmission of the embodiment of the present invention；
Fig. 2 is the cross section structure schematic diagram at A-A in Fig. 1；
Fig. 3 is the partial enlarged view at B in Fig. 2；
Fig. 4 is that the contiuously variable transmission of the present invention is being driven the movement locus with the conical shrapnel of speed change ring in speed-change process
Schematic diagram.
Reference numeral
1 power input part
11 input shafts
12 first cone pulleys
2 power output parts
21 output shafts
22 second cone pulleys
3 speed change rings
31 conical shrapnels
32 ring center axis
4 speed change screw bodies
41 lead screws
42 feed screw nuts
43 synchronous sprocket wheels
5 pressing devices
51 idler wheels
52 roller shafts
6 shells
Specific implementation mode
The technology contents of the present invention are described further with reference to the accompanying drawings and examples.
Please also refer to Fig. 1 to Fig. 4, which respectively show the cross section structures of the contiuously variable transmission of first embodiment of the invention
The movement locus signal of the conical shrapnel of speed change ring in schematic diagram, the partial enlarged view of speed change ring and transmission and speed-change process
Figure.Wherein, Fig. 2 is the cross section structure schematic diagram at A-A in Fig. 1；Fig. 3 is the partial enlarged view at B in Fig. 2.The present invention's
In preferred embodiment, the contiuously variable transmission includes mainly power transmission mechanism, speed change ring and variable-speed unit.
The power transmission mechanism includes at least a power input part and a power output part.In Fig. 1 and Fig. 2 institutes
In the embodiment shown, power input part 1 includes an input shaft 11 and the first cone pulley 12 being sheathed on input shaft 11.Power
Output block 2 includes an output shaft 21 and the second cone pulley 22 being sheathed on output shaft 21.Wherein, the first cone pulley 12 and input
Axis 11 is fixed to each other and can (rotation herein refers to drive of the input shaft 11 in equipment such as engines with 11 synchronous rotary of input shaft
The dynamic lower rotation carried out)；Second cone pulley 22 is fixed to each other with output shaft 21 and can be with output shaft 21 synchronous rotary (rotation herein
Turn to refer to synchronous rotation that output shaft 21 is carried out in the second cone pulley 22).As shown in Figure 1, the second cone pulley 22 of power output part 2
With the first cone pulley 12 of power input part 1 towards on the contrary, the smaller one end of the size of i.e. the second cone pulley 22 towards the first cone pulley
12 larger-size one end；Correspondingly, the size of the size of the first cone pulley 12 smaller one end towards the second cone pulley 22 is larger
One end.Further, in Fig. 1 and preferred embodiment shown in Fig. 2, the size phase of the first cone pulley 12 and the second cone pulley 22
Together, and the axis of the first cone pulley 12 is parallel with the axis of the second cone pulley 22.It is further preferred that the first cone pulley 12 and/or
The surface of two cone pulleys 22 has groove, and the groove is for reducing the phenomenon that skidding that speed change ring is likely to occur.
Speed change ring 3 is around the power transmission mechanism, and speed change ring 3 (X-direction in Fig. 1) can come up in a first direction
Return is dynamic.As shown in Figures 2 and 3, speed change ring 3 can be a steel loop conspired to create by conical shrapnel.Specifically, speed change ring 3
Including a ring center axis 32 and multiple conical shrapnels 31.Multiple cone shrapnels 31 are set on ring center axis 32.
Wherein, multiple conical shrapnels 31 can be rotated along ring center axis 31, around the power transmission mechanism.And each cone bullet
Piece 31 can be rotated centered on ring center axis 32, in turn, speed change ring 3 be made to be moved along first direction, realize variable speed
The form of rolling can be used during device speed change, compare the steel band of existing mechanical stepless automatic speed changer (CVT) in speed change
Use in the process slideably for, have many advantages, such as that frictional resistance is smaller and can realize quick speed change.
More specifically, at least one conical shrapnel and power input part in multiple conical shrapnels of speed change ring 3
It is connected, the cone shrapnel is driven to rotate by power input part.In Fig. 1 and embodiment shown in Fig. 2, speed change ring 3
At least one cone shrapnel is connected with the first cone pulley 12, and drives the cone shrapnel to be rotated by the first cone pulley 12.
Remaining conical shrapnel on speed change ring 3 can be pushed around power input part 1 and power output portion after cone shrapnel rotation
Part 2 rotates, and realizes the rotation of speed change ring 3.It should be noted that the connection of the first cone pulley 12 and conical shrapnel can be herein
Refer to the intermeshing between the first cone pulley 12 and multiple conical shrapnels, can also refer to only the first cone pulley 12 and multiple circular cones
Being bonded to each other between shape shrapnel.And the rotation of speed change ring 3 herein refers to that speed change ring 3 carries out under the driving of the first cone pulley 12
Rotation, for the structure based on above-mentioned conical shrapnel and ring center axis, it is understood that for multiple circles on speed change ring 3
The rotation that taper shrapnel 31 is carried out along ring center axis 32, around the power transmission mechanism.
At least one conical shrapnel of speed change ring 3 is also connected with the second cone pulley 22, after multiple cone shrapnel rotations
The second cone pulley 22 rotation (connection and rotation meaning herein is similar with above-mentioned first cone pulley 12) is driven, in turn, in this embodiment
In, it is realized the power transmission of power input part 1 to power output part 2 by speed change ring 3.
The variable-speed unit control speed change ring is moved along first direction to adjust the rotating speed of power output part.The speed change
Unit includes speed change screw body 4, pressing device 5 and speed changing control mechanism.It is described in Fig. 1 and embodiment shown in Fig. 2
Variable-speed unit includes two speed change screw bodies 4 and two pressing devices 5.Wherein, two speed change screw bodies 4 are respectively arranged at
The both sides (being the both sides up and down for being set to speed change ring 3 in Fig. 1 and Fig. 2) of speed change ring 3, two speed change screw bodies 4 are all connected with one
A speed changing control mechanism.It should be noted that, although with tool, there are two speed change lead screws in Fig. 1 and embodiment shown in Fig. 2
It is illustrated for the variable-speed unit of mechanism 4 and two pressing devices 5, but it is not limited to this, in the other embodiment of the present invention
In, the quantity of speed change screw body and pressing device can be adjusted according to the actual needs, such as tool there are three or four
Speed change screw body and pressing device etc., it will not be described here.
Since in this embodiment, two speed change screw bodies 4 are identical with the structure of two pressing devices 5, therefore, to scheme
Be set in 1 the top of speed change ring 3 speed change screw body 4 and pressing device 5 for illustrate.Specifically, speed change lead screw
Mechanism 4 is set to the outside of speed change ring 3, and speed change screw body 4 includes lead screw 41 and feed screw nut 42.As shown in Figure 1, lead screw 41
Extend along first direction (X-direction in Fig. 1).Feed screw nut 42 is sheathed on lead screw 41, and can be along lead screw 41 in first party
Move back and forth upwards.Wherein, feed screw nut 42 refers in 41 rotary course of lead screw, along 41 surface of lead screw along the movement of lead screw 41
Screw thread moved.
Pressing device 5 is set to 3 outside of speed change ring, is connected with feed screw nut 42 and speed change ring 3.Pressing device 5 can be with
The synchronizing moving in a first direction of feed screw nut 42 controls at least one conical shrapnel 31 centered on by ring center axis 32
While rotation, in power input part 1 and/or the surface scrolls of power output part 2, to drive speed change ring 3 in first party
It moves up, and pressing device 5 can play the role of crimp to the conical shrapnel 31 of speed change ring 3, make speed change ring 3
The first cone pulley 12 and the second cone pulley 22 are bonded in the form of elliptoid, to increase it between the first cone pulley 12 and the second cone pulley 22
Contact area, avoid stress concentration, have skidded, in turn, realize that effective power transmits.Specifically, in Fig. 1 and Fig. 2
Shown in embodiment, pressing device 5 includes an idler wheel 51 and a roller shaft 52.Idler wheel 51 is sheathed on roller shaft 52.Rolling
Wheel 51 is connected with the conical shrapnel 31 of feed screw nut 42 and speed change ring 3, and can with feed screw nut 42 along roller shaft 52 the
It is moved on one direction.
It is further preferred that having between the center line of roller shaft 52 and the first cone pulley 12 and the profile of the second cone pulley 22
Certain angle, the angle is smaller in the toe end (i.e. smaller one end of size) of the first cone pulley 12 and the second cone pulley 22, to
It realizes and deforms bigger when speed change ring 3 runs to the region, make it with the first cone pulley contact area also with regard to bigger, to reduce speed change
Ring 3 skids.
The speed changing control mechanism (being not shown in Fig. 1 and Fig. 2) is connected with lead screw 41, and driving lead screw 41 rotates, with this
Control feed screw nut 42 moves in a first direction along lead screw 41.
Further, in Fig. 1 and embodiment shown in Fig. 2, each speed change screw body 4 further includes a synchronous sprocket wheel
43.Two synchronous sprocket wheels 43 may be contained within the same end of speed change screw body 4.Variable-speed unit further includes one around two synchronous chains
The silent chain (being not shown in Fig. 1 and Fig. 2) of wheel 43.The rotating speed of the two can be made to keep one after two synchronous sprocket wheels 43 of tooth form chain link
It causes, in turn, the rotating speed of two lead screws 41 can be made to be consistent, two pressures can be made under the rotating speed unanimous circumstances of two lead screws 41
51 synchronizing moving of idler wheel of tight device 5, to ensure that the stability in 3 moving process of speed change ring.
In order to clearly be illustrated to the running orbit of the conical shrapnel of speed change ring, Fig. 4 shows the nothing of the present invention
Grade speed changer is being driven the movement locus schematic diagram with the conical shrapnel of speed change ring in speed-change process.Wherein, Fig. 4 is schematically
It is illustrated by taking a conical shrapnel 31 on speed change ring 3 as an example.
Further, in conjunction with shown in above-mentioned Fig. 1 to Fig. 4, contiuously variable transmission of the invention is during power transmission, and
One cone pulley 12 is fixed to each other with input shaft 11 and can drive the cone of speed change ring 3 afterwards with 11 synchronous rotary of input shaft (rotation)
The rotation that shrapnel 31 is carried out around the power transmission mechanism is (as shown in figure 4, conical shrapnel 31 is rotated along the directions D2, just
Generally speaking, can be regarded as speed change ring 3 and carried out rotation), due to the conical shrapnel 31 on speed change ring 3 also with the second cone pulley 22
It is connected, so the second cone pulley 22 can be driven to be rotated (rotation) after multiple cone shrapnel rotations, realizes the transmission of power.
Further, the embodiment in conjunction with shown in Fig. 1 to Fig. 4, the case where the contiuously variable transmission needs to carry out speed change
Under, first by 41 axial-rotation of lead screw (i.e. rotation) of speed changing control mechanism driving speed change screw body 4, lead screw 41 can after rotating
So that feed screw nut 42 moves up along first party, idler wheel 51 carries out first party under the drive of feed screw nut 42 along roller shaft 52
It is mobile to (axial direction of roller shaft 52).Idler wheel 51 pushes the conical shrapnel 31 of speed change ring 3 along centered on ring center axis 32
It is rotated, conical shrapnel 31 can be rolled while rotation in the first cone pulley 12 and 22 surface of the second cone pulley, in turn, real
Existing 3 moving along first direction of speed change ring, since the first cone pulley 12 and the second cone pulley 22 are rolled in speed change ring 3 along first direction
Diameter is different on dynamic path, it is thereby achieved that the deceleration or acceleration of contiuously variable transmission.In the embodiment shown in fig. 1, become
After fast ring 3 is rolled along the direction of X-axis, for the first cone pulley 12, due to the diameter of the first cone pulley 12 on the direction along X-axis
Become larger, therefore, in the case where the angular speed of its rotation is constant, the linear velocity for the position that is meshed with speed change ring 3 increases, with
This increases the rotating speed of speed change ring 3；And for the second cone pulley 22, due to the diameter of the second cone pulley 22 on the direction along X-axis
Become smaller, therefore, even if being continuously improved if the angular speed of second cone pulley 22 in the case where 3 rotating speed of speed change ring is constant, thus may be used
See, not only the rotating speed of speed change ring 3 improves on the direction along X-axis, but also the rotating speed of the second cone pulley 22 has also been obtained into one
The raising of step, to make the faster rotational speed of output shaft 21.On the contrary, speed change ring 3 can make after being rolled along the direction opposite with X-axis it is defeated
The rotating speed of shaft 21 is slack-off.
Further, in Fig. 1 and embodiment shown in Fig. 2, the contiuously variable transmission further includes a shell 6.Wherein, it moves
Force transmission mechanism, speed change ring and variable-speed unit may be contained in shell 6.
It should be noted that the structure of the contiuously variable transmission of the present invention is mainly used in the contiuously variable transmission of small torque drive
In, speed change ring is controlled by variable-speed unit and moves along first direction turning for power output part to adjust power transmission mechanism
Speed realizes the speed change of contiuously variable transmission, wherein in speed-change process, speed change ring (is referred to during moving in a first direction with rolling
The rolling of the conical shrapnel of speed change ring) form moved on cone pulley (such as the first cone pulley, second cone pulley) surface, compared to existing
Mechanical stepless automatic speed changer (CVT) steel band used in speed-change process slideably for, have frictional resistance compared with
It is small and the advantages that can realize quick speed change.Also, the speed change ring is also with contact area is big, service wear is small, lasts a long time
Advantage.In addition, the structure of the buncher is avoided using hydraulic compressing device complicated in existing contiuously variable transmission, thus
With manufacturing relatively simple, the advantages that cost is relatively low, and reliability is higher.
In conclusion the embodiment in conjunction with shown in above-mentioned Fig. 1 to Fig. 4, contiuously variable transmission provided in an embodiment of the present invention is logical
Cross the rotating speed realization for the power output part that variable-speed unit control speed change ring is moved along first direction to adjust power transmission mechanism
The speed change of contiuously variable transmission, wherein in speed-change process, since speed change includes multiple circles that can be rotated centered on ring center axis
Taper shrapnel, therefore, speed change ring move in a first direction during in the form of rolling in cone pulley (such as the first cone pulley,
Two cone pulleys) surface movement, compare the sliding that the steel band of existing mechanical stepless automatic speed changer (CVT) uses in speed-change process
For form, have many advantages, such as that frictional resistance is smaller and can realize quick speed change.Also, the speed change ring also has contact area
Greatly, service wear is small, the advantages that lasting a long time.In addition, the structure of the buncher is avoided using existing contiuously variable transmission
The hydraulic compressing device of middle complexity, to manufacturing relatively simple, the advantages that cost is relatively low, and reliability is higher.
Although the present invention is disclosed as above with preferred embodiment, it is not limited to the present invention.Belonging to the present invention
Those skilled in the art, without departing from the spirit and scope of the present invention, when various change and modification can be made.Therefore,
Protection scope of the present invention is subject to the range defined depending on claims.
Claims (9)
1. a kind of contiuously variable transmission, which is characterized in that the contiuously variable transmission includes：
Power transmission mechanism, the power transmission mechanism include at least a power input part and a power output part；
Speed change ring, around the power transmission mechanism, and the speed change ring can move back and forth in a first direction, the speed change ring
Including：
One ring center axis；And
Multiple cone shrapnels, are set on the ring center axis, and multiple conical shrapnels can be along the ring center
Axis is rotated around the power transmission mechanism；Wherein, at least one conical shrapnel is connected with the power input part
It connects, rotated around the power transmission mechanism by the power input part driving conical shrapnel；At least one circle
Taper shrapnel is connected with the power output part, the power output part is driven to rotate；And each conical bullet
Piece can rotate centered on the ring center axis；
Variable-speed unit, the variable-speed unit include at least a pressing device, and the pressing device is set on the outside of the speed change ring,
And be connected with the speed change ring, at least one conical shrapnel of control rotates centered on by the ring center axis
While, in the power input part and/or the surface scrolls of the power output part, to drive the speed change ring along institute
State the rotating speed of mobile, the adjusting power transmission mechanism the power output part of first direction.
2. contiuously variable transmission according to claim 1, which is characterized in that the variable-speed unit further includes：
Speed change screw body, is set on the outside of the speed change ring, and the speed change screw body includes：
Lead screw, the lead screw extend along the first direction；With
Feed screw nut is sheathed on the lead screw, and can in a first direction move back and forth along the lead screw；
Speed changing control mechanism is connected with the lead screw, drives the lead screw to rotate, to control the feed screw nut along the silk
Bar moves in a first direction；
Wherein, the pressing device is also connected with the feed screw nut, and the pressing device can be with the feed screw nut in institute
Synchronizing moving on first direction is stated, to drive at least one conical shrapnel to be rotated centered on by the ring center axis
While, in the power input part and/or the surface scrolls of the power output part, drive the speed change ring described
First party moves up.
3. contiuously variable transmission according to claim 2, which is characterized in that the variable-speed unit includes two speed change silks
Linkage, two speed change screw bodies are respectively arranged at the both sides of the speed change ring, two speed change screw bodies
Lead screw is all connected with the speed changing control mechanism.
4. contiuously variable transmission according to claim 3, which is characterized in that the variable-speed unit includes two compression dresses
It sets, each pressing device includes an idler wheel and a roller shaft, and the roller housing is set on the roller shaft, each described
Idler wheel is connected with a feed screw nut and the speed change ring, and can be moved along the roller shaft with the feed screw nut.
5. contiuously variable transmission according to claim 3, which is characterized in that each speed change screw body further includes together
Sprocket wheel is walked, the synchronous sprocket wheel is set to the same end of the speed change screw body；The variable-speed unit further includes one around two
The silent chain of a synchronous sprocket wheel.
6. contiuously variable transmission according to claim 1, which is characterized in that the power input part include an input shaft with
And it is sheathed on the first cone pulley on the input shaft, first cone pulley is connected with the speed change ring, and at least described in driving
At least one conical shrapnel rotation of speed change ring；
The power output part includes an output shaft and the second cone pulley being sheathed on the output shaft, second cone pulley
It is connected with the speed change ring, and is rotated under speed change ring driving, wherein second cone pulley and first cone pulley court
To opposite.
7. contiuously variable transmission according to claim 6, which is characterized in that the size of first cone pulley is bored with described second
The size of wheel is identical, and the axis of first cone pulley is parallel with the axis of the second cone pulley.
8. contiuously variable transmission according to claim 6, which is characterized in that first cone pulley and/or second cone pulley
Surface have groove.
9. according to the contiuously variable transmission described in claim 1 to 8, which is characterized in that the contiuously variable transmission further includes a shell,
The power transmission mechanism and the variable-speed unit are set in the shell.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710102302.3A CN108506447B (en) | 2017-02-24 | 2017-02-24 | Continuously variable transmission |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710102302.3A CN108506447B (en) | 2017-02-24 | 2017-02-24 | Continuously variable transmission |
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| CN108506447A true CN108506447A (en) | 2018-09-07 |
| CN108506447B CN108506447B (en) | 2024-04-16 |
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| CN201065924Y (en) * | 2007-07-11 | 2008-05-28 | 日本电产新宝(浙江)有限公司 | Speed-changing machine |
| US7803077B1 (en) * | 2009-02-23 | 2010-09-28 | Spaude Robert W | Constant torque input infinitely variable automatic transmission |
| KR20110105025A (en) * | 2010-03-18 | 2011-09-26 | 현대 파워텍 주식회사 | Cone-ring type continuous variable transmission |
| KR20130127744A (en) * | 2012-05-15 | 2013-11-25 | 현대자동차주식회사 | Automated manual transmission for vehicle |
| CN103807394A (en) * | 2014-01-27 | 2014-05-21 | 北京理工大学 | Internal contact conical ring type continuously-variable transmission |
| CN106438906A (en) * | 2016-10-18 | 2017-02-22 | 绍兴文理学院 | Conical band type automobile continuously variable transmission |
| CN206770545U (en) * | 2017-02-24 | 2017-12-19 | 蔡有建 | A kind of buncher |
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2017
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|---|---|---|---|---|
| CN201065924Y (en) * | 2007-07-11 | 2008-05-28 | 日本电产新宝(浙江)有限公司 | Speed-changing machine |
| US7803077B1 (en) * | 2009-02-23 | 2010-09-28 | Spaude Robert W | Constant torque input infinitely variable automatic transmission |
| KR20110105025A (en) * | 2010-03-18 | 2011-09-26 | 현대 파워텍 주식회사 | Cone-ring type continuous variable transmission |
| KR20130127744A (en) * | 2012-05-15 | 2013-11-25 | 현대자동차주식회사 | Automated manual transmission for vehicle |
| CN103807394A (en) * | 2014-01-27 | 2014-05-21 | 北京理工大学 | Internal contact conical ring type continuously-variable transmission |
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| CN206770545U (en) * | 2017-02-24 | 2017-12-19 | 蔡有建 | A kind of buncher |
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| Publication number | Publication date |
|---|---|
| CN108506447B (en) | 2024-04-16 |
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Effective date of registration: 20240419 Address after: 201800 unit 602, building 2, Lane 38, Zhangma Road, Jiading District, Shanghai Patentee after: SHANGHAI JIANLIN AUTOMOTIVE TECHNOLOGY CO.,LTD. Country or region after: China Address before: 201800 unit 602, building 2, Lane 38, Zhangma Road, Jiading District, Shanghai Patentee before: Cai Youjian Country or region before: China |