CN110230525A - Variable valve timing apparatus with vector cycloid gear - Google Patents
Variable valve timing apparatus with vector cycloid gear Download PDFInfo
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- CN110230525A CN110230525A CN201910527050.8A CN201910527050A CN110230525A CN 110230525 A CN110230525 A CN 110230525A CN 201910527050 A CN201910527050 A CN 201910527050A CN 110230525 A CN110230525 A CN 110230525A
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- cycloid
- ball
- camshaft
- limited block
- face
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- 238000009434 installation Methods 0.000 claims abstract description 21
- 230000033001 locomotion Effects 0.000 claims description 17
- 230000005611 electricity Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 5
- 125000004122 cyclic group Chemical group 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000037237 body shape Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/352—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using bevel or epicyclic gear
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2820/00—Details on specific features characterising valve gear arrangements
- F01L2820/03—Auxiliary actuators
- F01L2820/032—Electric motors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The present invention relates to the inlet valves of change engine, the opening and close timing technical field of exhaust valve, especially disclose a kind of variable valve timing apparatus with vector cycloid gear, including driving the inlet valve of engine or the camshaft of exhaust valve, the sprocket wheel rotated coaxially with camshaft and the motor for changing camshaft relative to the rotational phase difference of sprocket wheel, it is linked between the output shaft and camshaft of motor by gear, the gear includes the eccentric structure being arranged on the output shaft of motor, output section by the cycloid disc of eccentric structure eccentric drive and with cycloid disc linkage, the first ball fixation hole and expanded hole are provided between the face A of the cycloid disc and installation cavity, cycloid groove and the second ball fixation hole are provided between the face B of the cycloid disc and output section, between first ball fixation hole and expanded hole and second The first ball and the second ball are respectively arranged between ball fixation hole and cycloid groove.Component is few, small in size, rationally distributed.
Description
Technical field
The present invention relates to the opening and close timing technical fields of the inlet valve of change engine, exhaust valve.
Background technique
Currently, all the time, it is corresponding with the operational situation of automobile, for becoming the mixed gas of fuel to engine supply
Inlet valve, be opened and closed according to the actuating length of engine for the exhaust valve of burning gases to be discharged.Start to improve
The specific fuel consumption of machine inhibits exhaust gas, there is known the opening and close timing of these valves is set as variable, according to the operating shape of engine
Condition and the variable valve timing apparatus with vector cycloid gear changed.
As the variable valve timing apparatus, for example, as shown in Figures 9 and 10, there are following variable valve timing apparatus: will
Drive engine valve camshaft 41, with from engine transmit rotation and drive cam shaft 41 rotation sprocket wheel 42 can be opposite
Rotatably configure on the same axis, will be configured with camshaft 41 rotation of the output shaft 44 of electric motor 43 on the same axis via
Both deceleration mechanism 45 and link mechanism 46 are transmitted to camshaft 41, make camshaft 41 relative to 42 relative rotation of sprocket wheel, make
Rotational phase difference generates variation, to change the opening and close timing of valve.
The deceleration mechanism 45 is set as, and a part of the tooth of internal gear 47 and is set to and the integrated shell of sprocket wheel 42
The external gear 49 of body 48 engages, which is supported on the output shaft of electric motor 43 by bearing in a way freely spinning way
44 eccentric axial portion 44a, thus making output shaft, " when relative to 42 relative rotation of sprocket wheel, internal gear 47 is around eccentric axial portion 44a
It is rotated, the rotation of the internal gear 47 is transmitted to guide plate 50 by the deceleration mechanism 45, and then the rotation of guide plate 50 is passed through
The cam disc 41a rotated integrally with camshaft 41 is transmitted to by the link mechanism 46 being made of arm 46a, 46b, makes camshaft 41
Relative to 42 relative rotation of sprocket wheel.
By the relative rotation of the camshaft 41 relative to sprocket wheel 42, rotation of the camshaft 41 relative to crankshaft can be changed
The rotatable phase of phase inversion position, to change the timing of the opening and closing of the inlet valve or exhaust valve of engine.
DYN dynamic variable valve timing apparatus documented by above-mentioned passes the rotation of the output shaft 44 of electric motor 43
It is delivered to the mechanism of camshaft 41, forms the complicated structure of combined speed reducer structure 45 and link mechanism 46, existing cannot be compactly
The problem of designing device.
It is that cam is realized by RV speed reducer between sprocket wheel and camshaft in the CN102482955A that 2012 announce
Rotational phase difference between axis and sprocket wheel.
, there is the problems such as component is more, and installation procedure is cumbersome, and volume is big in comprehensive published technical solution at present.
Summary of the invention
For overcome the deficiencies in the prior art, the present invention provides a kind of component is few, small in size there is vector cycloid to become
The variable valve timing apparatus of fast mechanism.
To achieve the goals above, the technical solution adopted by the present invention is that: it is a kind of with vector cycloid gear can
Air valve variation advance/retard mechanism, including the sprocket wheel for driving the inlet valve of engine or the camshaft of exhaust valve and camshaft to rotate coaxially
And the motor for changing camshaft relative to the rotational phase difference of sprocket wheel, pass through speed change between the output shaft and camshaft of motor
Mechanism linkage, further includes position-limit mechanism, and rotational phase difference of the position-limit mechanism by the camshaft relative to the sprocket wheel limits
In the range of required angle, the installation cavity for gear installation is provided on the sprocket wheel, the gear includes setting
Set the eccentric structure on the output shaft of motor, the output by the cycloid disc of eccentric structure eccentric drive and with cycloid disc linkage
Portion, the axial ends face of the cycloid disc are respectively the face A and the face B, opposite with the face A on the face A of the cycloid disc and installation cavity
It is provided between opposite face around several circumferentially distributed the first ball fixation holes and expanded hole, the first ball fixation hole and expansion
Hole corresponds, and between the opposite face opposite with the face B is provided with cycloid groove on the face B of the cycloid disc and output section and around circumferential direction
Several the second ball fixation holes of distribution, between the first ball fixation hole and expanded hole and the second ball fixation hole and cycloid
The first ball and the second ball for so that cycloid disc is done cycloid motion are respectively arranged between slot, output section and camshaft linkage connect
It connects.
In above-mentioned technical proposal, only there are three components for gear, pass through ball between sprocket wheel, cycloid disc and output section
Transmission, component is few, and easy for installation, overall dimensions are thinning, and the bore of expanded hole is greater than the bulb diameter of the first ball, and sprocket wheel is equivalent to
The shell of gear, when the revolving speed of the revolving speed of motor and sprocket wheel is inconsistent, input shaft driving cycloid disc does eccentric motion, because
Sprocket wheel is relatively stationary, so cycloid disc is swung relative to sprocket wheel, the setting of expanded hole is exactly inclined in order to provide to cycloid disc
Space is moved, cycloid disc is enable to avoid putting there are gap between the outside circumference of cycloid disc and the inner wall of installation cavity in cycloid motion
Drum collides installation cavity wall when doing cycloid motion, is connected by key between output section and camshaft, rationally distributed.
As the further setting of the present invention, raised annular arc groove centered on the bottom surface of the expanded hole, the first rolling
Pearl can roll in annular arc groove.
In above-mentioned technical proposal, the bottom surface of enlarged body is also possible to planar, preferably annular arc groove, cyclic annular circular arc
The bottom of slot be it is arc-shaped, avoid the stress concentration phenomenon of point of a knife shape, strengthen the intensity of sprocket wheel or cycloid disc, and is cyclic annular
Arc groove further enhances the intensity of sprocket wheel or cycloid disc in radial not break-through, and the center of circle of each annular arc groove is surrounded by
One circle.
As the further setting of the present invention, the center line of the centre of sphere of first ball to annular arc groove it is vertical away from
From the eccentricity for being equal to input shaft.
In above-mentioned technical proposal, when the first ball is located in annular arc groove, the center line of annular arc groove to first
The distance between ball centre of sphere is the eccentricity of input shaft, is to roll cooperation in the first ball and annular arc groove, so that friction
Small, noise is small, and service wear is low, and the service life increases, and power consumption is few, saves driving electric energy.
As the further setting of the present invention, the sprocket wheel includes sprocket body and the ring that is fixedly connected with sprocket body
Shape cover board, the first ball fixation hole or expanded hole are arranged on the inner wall of sprocket body, and annular cover plate lid is located on output section real
Now cooperate with the axial limiting of output section.
In above-mentioned technical proposal, sprocket wheel is made of the sprocket body and annular cover plate of the setting that is harmonious, sprocket body and annular
Cover board passes through screw connection so that it is convenient to dismount, and also facilitates the installation of gear, has in sprocket body and be adapted to cycloid disc
Cylindrical portion, cylindrical portion be in traverse Z-shaped, both ends are corresponding with the outer peripheral surface of the outer peripheral surface of cycloid disc and input shaft respectively,
Middle part and the face A of cycloid disc are oppositely arranged, and the first ball fixation hole or expanded hole are arranged on the middle part inner wall of cylindrical portion, cylinder
It is provided with first bearing between portion end corresponding with input shaft and input shaft, is equipped between cycloid disc and the eccentric wheel of input shaft
Second bearing reduces friction, reduces the abrasion between component.
As the further setting of the present invention, the position-limit mechanism includes being separately positioned on annular cover plate and output section
The first limit block and the second limit block, the first limit block and the second limit block are construed as limiting output section relative to sprocket wheel through rotation
The abutting of rotational phase difference limits cooperation.
In above-mentioned technical proposal, because the folding of intake and exhaust valves has a certain range, so camshaft cannot be random
Rotation, the excessive structure that may be damaged intake and exhaust valves of slewing area, it is too small possibly can not fully open inlet valve and
Exhaust valve, the setting of the first limit block and the second limit block can avoid the limit cooperation between component, prolong the service life.
As the further setting of the present invention, first limited block is arranged on the inside circumference of annular cover plate, and number
Amount at least two, the second limited block are arranged in side of the output section towards camshaft, and quantity is at least one, and described second
Limited block is between two first limited blocks.
In above-mentioned technical proposal, the second limited block abuts to and another the first limit from one of them first limited block
This motion process that block abuts is the movement travel of the second limited block, because the second limited block is rotated with output section, institute
Angle rotatable with the second limited block is range of the output section relative to the rotational phase difference of sprocket wheel, preferred first limit
The quantity of block and the second limited block can be consistent, and is evenly distributed, and has one second between every adjacent two first limited block
Limited block is evenly distributed by the resistance that the first limit block and the second limit block are abutted and generated in this way, and resistance is big, limit effect
More preferably.
As the further setting of the present invention, first limited block is arranged on the inside circumference of annular cover plate, and number
Amount is at least one, and the second limited block is arranged in side of the output section towards camshaft, and quantity at least two, and described first
Limited block is between two second limited blocks.
In above-mentioned technical proposal, one of them second limited block and the first limited block abut to another first limited block with
This motion process that first limited block abuts is the movement travel of the second limited block, because the second limited block is turned with output section
Dynamic, so the angle rotatable of the second limited block is range of the output section relative to the rotational phase difference of sprocket wheel, preferably
The quantity of the first limit block and the second limit block can be consistent, and is evenly distributed, and has between every adjacent two second limited block
One the first limited block is evenly distributed by the resistance that the first limit block and the second limit block are abutted and generated in this way, and resistance is big,
Limit effect is more preferable.
The invention will be further described below in conjunction with the accompanying drawings.
Detailed description of the invention
Attached drawing 1 is specific embodiment of the invention overall structure cross-sectional view；
Attached drawing 2 is specific embodiment of the invention overall structure cross-sectional view；
Attached drawing 3 is the face the A schematic diagram of specific embodiment of the invention cycloid disc；
Attached drawing 4 is the face the B schematic diagram of specific embodiment of the invention cycloid disc；
Attached drawing 5 is the structure sectional view of specific embodiment of the invention sprocket wheel and output section；
Attached drawing 6 is the structure sectional view of specific embodiment of the invention cycloid disc；
Attached drawing 7 is specific embodiment of the invention partial enlarged view；
Attached drawing 8 is specific embodiment of the invention structural perspective；
Attached drawing 9 is the structure sectional view of the prior art；
Attached drawing 10 is the cross-sectional view along the line D-D of attached drawing 9.
Specific embodiment
Specific embodiments of the present invention as shown in figures 1-8, a kind of variable valve timing with vector cycloid gear
Device, including driving the inlet valve of engine or the camshaft 1 of exhaust valve, the sprocket wheel 2 that rotates coaxially with camshaft 1 and making convex
The motor 3 that wheel shaft 1 changes relative to the rotational phase difference of sprocket wheel 2, passes through speed change between the output shaft 31 and camshaft 1 of motor 3
Mechanism 4 links, and further includes position-limit mechanism 5, rotational phase difference of the position-limit mechanism 5 by the camshaft 1 relative to the sprocket wheel 2
It is limited in the range of required angle, the installation cavity 21 installed for gear 4, the variable-speed motor is provided on the sprocket wheel 2
Structure 4 include be arranged on the output shaft 31 of motor 3 eccentric structure, by eccentric structure eccentric drive cycloid disc 42 and with pendulum
The output section 43 that drum 42 links, the output shaft 31 and input shaft 41 of motor 3 are key connection, and the rotation direction of input shaft 41 can be just
Turn or reversion, velocity of rotation are equal to or higher than the velocity of rotation of sprocket wheel 2, eccentric structure includes connecting with the output shaft 31 of motor 3
The input shaft 41 connect and the eccentric wheel 411 being arranged on input shaft 41, eccentric wheel 411 is for driving cycloid disc 42 to do eccentric fortune
It is dynamic, it is provided on the axial face A 421 of the cycloid disc 42 on several circumferentially distributed expanded holes 423, installation cavity 21 and A
It is provided on the opposite opposite face 211 in face 421 around several circumferentially distributed the first ball fixation holes 212, the first ball is fixed
Hole 212 and expanded hole 423 correspond, naturally it is also possible to be cycloid disc 42 the axial face A 421 on be provided with around circumferentially distributed
Several the first ball fixation holes 212 are provided with around circumferentially distributed on installation cavity 21 on the opposite face 211 opposite with the face A 421
Several expanded holes 423, are provided with cycloid groove 424 on the axial face B 422 of the cycloid disc 42, on output section 43 with the face B 422
It is provided on opposite opposite face 431 around several circumferentially distributed the second ball fixation holes 432, naturally it is also possible to be cycloid disc
It is provided on the 42 axial face B 422 on several circumferentially distributed the second ball fixation holes 432, output section 43 and the face B 422
Cycloid groove 424 is provided on opposite opposite face 431, between the first ball fixation hole 212 and expanded hole 423 and the second ball
The first ball 44 and the second ball for so that cycloid disc 42 is done cycloid motion are respectively arranged between fixation hole 432 and cycloid groove 424
45, output section 43 is connected with camshaft 1.Gear 4 there are three component, sprocket wheel 2, cycloid disc 42 and output section 43 it
Between by Ball Transmission, component is few, and easy for installation, overall dimensions are thinning, and the bore of expanded hole 423 is greater than the first ball 44
Bulb diameter, sprocket wheel 2 are equivalent to the shell of gear 4, when the revolving speed of the revolving speed of motor 3 and sprocket wheel 2 is inconsistent, input shaft 41
Driving cycloid disc 42 does eccentric motion, because sprocket wheel 2 is relatively stationary, so cycloid disc 42 is swung relative to sprocket wheel 2, expanded hole
423 setting is exactly to enable cycloid disc 42 in cycloid motion, the outside of cycloid disc 42 to provide offset space to cycloid disc 42
There are gaps between circumferential surface and the inner wall of installation cavity 21, and cycloid disc 42 is avoided to be collided in installation cavity 21 when doing cycloid motion
Wall is connected by key between output section 43 and camshaft 1, rationally distributed.
The bottom surface of above-mentioned expanded hole 423 is the annular arc groove 4232 of 4231 protrusion of center, the height of 4231 protrusion of center
Very little, end face can be it is planar be also possible to pinnacle, the inner wall of annular arc groove 4232 is bonded with the first ball 44, first
Ball 44 can roll in annular arc groove 4232.The bottom of cyclic annular arc groove be it is arc-shaped, avoid the stress of point of a knife shape
Concentration phenomenon strengthens the intensity of sprocket wheel 2 or cycloid disc 42, and cyclic annular arc groove further enhances chain in radial not break-through
The center of circle of the intensity of wheel 2 or cycloid disc 42, each annular arc groove 4232 is surrounded by a circle.
The vertical range of center line of the centre of sphere of above-mentioned first ball 44 to annular arc groove 4232 is equal to input shaft 41
Eccentricity r.When the first ball 44 is located in annular arc groove 4232, the center line of annular arc groove 4232 to the first ball 44
The distance between centre of sphere is the eccentricity of input shaft 41, is rolling cooperation in the first ball 44 and annular arc groove 4232, so that
It rubs small, noise is small, and service wear is low, and the service life increases, and power consumption is few, saves driving electric energy.
Above-mentioned sprocket wheel 2 includes sprocket body 22 and the annular cover plate 23 being fixedly connected with sprocket body 22, the first ball
Fixation hole 212 or expanded hole 423 are arranged on the inner wall of sprocket body 22, annular cover plate 23 lid be located on output section 43 realize with
The axial limiting of output section 43 cooperates.Sprocket wheel 2 is made of the sprocket body 22 and annular cover plate of the setting that is harmonious, sprocket body 22 with
Annular cover plate 23 is connected by screw 24 so that it is convenient to dismount, and also facilitates the installation of gear 4, installation cavity 21 is located at sprocket wheel
In ontology 22, the first cylindrical cavity 221 that installation cavity 21 is coaxially disposed by two is connected to the second cylindrical cavity 222, the
The diameter of one cylindrical cavity 221 and the second cylindrical cavity 222 is different, so the first cylindrical cavity 221 and the second cylindrical cavity
222 junction forms an annular joint face 223, and the face A 421 of annular joint face 223 and cycloid disc 42 is oppositely arranged, installs
The opposite face 211 opposite with the face A of cycloid disc 42 is annular joint face 223, the first ball fixation hole 212 or expansion on chamber 21
Hole 423 is arranged on annular joint face 223, is provided with first bearing between the inner wall and input shaft 41 of the first cylindrical cavity 221
01, it is equipped with second bearing 02 between cycloid disc 42 and the eccentric wheel 411 of input shaft 41, is arranged between output section 43 and input shaft 41
There is 3rd bearing 03, first bearing 01 and second bearing 02 are ball bearing, and 3rd bearing 03 is successively enclosed by several rollers
It is constituted around cyclization, reduces friction, reduce the abrasion between component, cycloid disc 42 and output section 43 are located at the second cylindrical cavity 222
It is interior.
As shown in figure 8, above-mentioned position-limit mechanism 5 includes the first limit being separately positioned on annular cover plate 23 and output section 43
Block 231 and the second limited block 433, the first limited block 231 and the second limited block 433 through rotation be construed as limiting output section 43 relative to
The abutting of the rotational phase difference of sprocket wheel 2 limits cooperation.Because the folding of intake and exhaust valves has a certain range, so camshaft
1 cannot arbitrarily rotate, the excessive structure that may be damaged intake and exhaust valves of slewing area, too small possibly to fully open
The setting of intake and exhaust valves, the first limited block 231 and the second limited block 433 can avoid the limit cooperation between component, prolong
Long life.
Embodiment one, first limited block 231 is arranged on the inside circumference of annular cover plate 23, and quantity is at least two
A, output section 43 is arranged in towards the side of camshaft 1 in the second limited block 433, and quantity is at least one, second limit
Block 433 is between two first limited blocks 231.Second limited block 433 from one of them first limited block 231 abut to separately
This motion process that one the first limited block 231 abuts is the movement travel of the second limited block 433, because of the second limited block
433 are rotated with output section 43, so the angle rotatable of 433 central point of the second limited block is output section 43 relative to chain
The range of the rotational phase difference of wheel 2, preferred first limited block 231 can be consistent with the quantity of the second limited block 433, and in equal
Even distribution, per there is second limited block 433 between adjacent two first limited block 231, in this way by the first limited block 231 and the
The resistance that two limited blocks 433 are abutted and generated is evenly distributed, and resistance is big, and limit effect is more preferable.
Embodiment two, first limited block 231 is arranged on the inside circumference of annular cover plate 23, and quantity is at least one
A, output section 43 is arranged in towards the side of camshaft 1 in the second limited block 433, and quantity at least two, first limit
Block 231 is between two second limited blocks 433.One of them second limited block 433 and the first limited block 231 abut to another
This motion process that first limited block 231 is abutted with the first limited block 231 is the movement travel of the second limited block 433, because
Second limited block 433 is rotated with output section 43, so the angle rotatable of 433 central point of the second limited block is output section
The quantity of 43 range relative to the rotational phase difference of sprocket wheel 2, preferred first limited block 231 and the second limited block 433 can be with
Unanimously, it and is evenly distributed, has first limited block 231 between every adjacent two second limited block 433, in this way by the first limit
The resistance that position block 231 and the second limited block 433 are abutted and generated is evenly distributed, and resistance is big, and limit effect is more preferable.
The present invention is not limited to above-mentioned specific embodiment, and persons skilled in the art are disclosed interior according to the present invention
Hold, can be implemented using other a variety of specific embodiments of the invention or all using design structure and think of of the invention
Road does simple change or change, both falls within protection scope of the present invention.
Claims (7)
1. a kind of variable valve timing apparatus with vector cycloid gear, inlet valve or exhaust including driving engine
The camshaft of door, the sprocket wheel rotated coaxially with camshaft and the electricity for changing camshaft relative to the rotational phase difference of sprocket wheel
Machine is linked by gear between the output shaft and camshaft of motor, further includes position-limit mechanism, which will be described convex
Wheel shaft is limited in the range of required angle relative to the rotational phase difference of the sprocket wheel, it is characterised in that: is set on the sprocket wheel
Be equipped with for gear installation installation cavity, the gear include the eccentric structure being arranged on the output shaft of motor, by
The cycloid disc of eccentric structure eccentric drive and the output section linked with cycloid disc, the axial ends face of the cycloid disc is respectively
The face A and the face B are provided between the opposite face opposite with the face A on the face A of the cycloid disc and installation cavity around circumferentially distributed several
A first ball fixation hole and expanded hole, the first ball fixation hole and expanded hole correspond, the face B of the cycloid disc and output
Cycloid groove is provided in portion between the opposite face opposite with the face B and around several circumferentially distributed the second ball fixation holes, first
Between ball fixation hole and expanded hole and being respectively arranged between the second ball fixation hole and cycloid groove makes cycloid disc do cycloid
The first ball and the second ball, output section of movement are connected with camshaft.
2. the variable valve timing apparatus according to claim 1 with vector cycloid gear, it is characterised in that: institute
Raised annular arc groove centered on the bottom surface of expanded hole is stated, the first ball can roll in annular arc groove.
3. the variable valve timing apparatus according to claim 2 with vector cycloid gear, it is characterised in that: institute
The vertical range of center line for stating the centre of sphere of the first ball to annular arc groove is equal to the eccentricity of input shaft.
4. the variable valve timing apparatus according to claim 1 or 2 or 3 with vector cycloid gear, feature
Be: the sprocket wheel includes sprocket body and the annular cover plate that is fixedly connected with sprocket body, the first ball fixation hole or expansion
Macropore is arranged on the inner wall of sprocket body, and annular cover plate lid, which is located on output section, to be realized and the cooperation of the axial limiting of output section.
5. the variable valve timing apparatus according to claim 4 with vector cycloid gear, it is characterised in that: institute
Stating position-limit mechanism includes the first limit block and the second limit block being separately positioned on annular cover plate and output section, the first limited block
With the second limited block through rotating the abutting limit cooperation for being construed as limiting output section relative to the rotational phase difference of sprocket wheel.
6. the variable valve timing apparatus according to claim 5 with vector cycloid gear, it is characterised in that: institute
It states the first limited block to be arranged on the inside circumference of annular cover plate, and quantity at least two, the setting of the second limited block is exporting
Portion is towards the side of camshaft, and quantity is at least one, and second limited block is between two first limited blocks.
7. the variable valve timing apparatus according to claim 5 with vector cycloid gear, it is characterised in that: institute
It states the first limited block to be arranged on the inside circumference of annular cover plate, and quantity is at least one, the setting of the second limited block is exporting
Portion is towards the side of camshaft, and quantity at least two, and first limited block is between two second limited blocks.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910527050.8A CN110230525A (en) | 2019-06-18 | 2019-06-18 | Variable valve timing apparatus with vector cycloid gear |
| PCT/CN2019/098610 WO2020252854A1 (en) | 2019-06-18 | 2019-07-31 | Variable valve timing device having vector cycloidal transmission mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910527050.8A CN110230525A (en) | 2019-06-18 | 2019-06-18 | Variable valve timing apparatus with vector cycloid gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110230525A true CN110230525A (en) | 2019-09-13 |
Family
ID=67859773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910527050.8A Pending CN110230525A (en) | 2019-06-18 | 2019-06-18 | Variable valve timing apparatus with vector cycloid gear |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110230525A (en) |
| WO (1) | WO2020252854A1 (en) |
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| JP6338550B2 (en) * | 2015-04-22 | 2018-06-06 | 日立オートモティブシステムズ株式会社 | Deceleration mechanism and valve timing control device for internal combustion engine using the deceleration mechanism |
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| DE102016104287B3 (en) * | 2016-03-09 | 2017-02-16 | Pierburg Gmbh | Device for phase shifting a rotational angle of a drive part to a driven part |
| JP6740938B2 (en) * | 2017-03-15 | 2020-08-19 | 株式会社デンソー | Eccentric swing type reduction gear |
| JP6911571B2 (en) * | 2017-06-23 | 2021-07-28 | 株式会社アイシン | Valve opening / closing timing control device |
| CN208951235U (en) * | 2018-09-18 | 2019-06-07 | 海尚集团有限公司 | Vector cycloid variable-speed unit |
-
2019
- 2019-06-18 CN CN201910527050.8A patent/CN110230525A/en active Pending
- 2019-07-31 WO PCT/CN2019/098610 patent/WO2020252854A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010138735A (en) * | 2008-12-10 | 2010-06-24 | Hitachi Automotive Systems Ltd | Valve timing control device for internal combustion engine |
| CN102482955A (en) * | 2009-04-03 | 2012-05-30 | Ntn株式会社 | Variable valve timing device |
| CN108458058A (en) * | 2018-04-04 | 2018-08-28 | 海尚集团有限公司 | Vector cycloid speed changer |
| CN109139811A (en) * | 2018-09-18 | 2019-01-04 | 海尚集团有限公司 | Vector cycloid variable-speed unit |
| CN210134985U (en) * | 2019-06-18 | 2020-03-10 | 海尚集团有限公司 | Variable valve timing apparatus having vector cycloid speed change mechanism |
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| WO2020252854A1 (en) | 2020-12-24 |
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