CN210134985U - Variable valve timing apparatus having vector cycloid speed change mechanism - Google Patents
Variable valve timing apparatus having vector cycloid speed change mechanism Download PDFInfo
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- CN210134985U CN210134985U CN201920919334.7U CN201920919334U CN210134985U CN 210134985 U CN210134985 U CN 210134985U CN 201920919334 U CN201920919334 U CN 201920919334U CN 210134985 U CN210134985 U CN 210134985U
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- 238000009434 installation Methods 0.000 claims abstract description 18
- 230000000670 limiting effect Effects 0.000 claims description 69
- 230000033001 locomotion Effects 0.000 claims description 15
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- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of changing the opening and closing timing of an inlet valve and an exhaust valve of an engine, in particular to a variable valve timing device with a vector cycloid speed change mechanism, which comprises a camshaft for driving the inlet valve or the exhaust valve of the engine, a chain wheel coaxially rotating with the camshaft and a motor for changing the rotation phase difference of the camshaft relative to the chain wheel, wherein the output shaft of the motor is linked with the camshaft through the speed change mechanism, the speed change mechanism comprises an eccentric structure arranged on an output shaft of the motor, a cycloid disc eccentrically driven by the eccentric structure and an output part linked with the cycloid disc, a first ball fixing hole and an enlarged hole are formed between the surface A of the cycloid disc and the installation cavity, a cycloid groove and a second ball fixing hole are formed between the surface B of the cycloid disc and the output portion, and a first ball and a second ball are arranged between the first ball fixing hole and the enlarged hole and between the second ball fixing hole and the cycloid groove respectively. The number of parts is small, the volume is small, and the layout is reasonable.
Description
Technical Field
The utility model relates to a switching technical field in right time of (air) intake valve, exhaust valve of change engine.
Background
Conventionally, an intake valve for supplying a fuel-air mixture to an engine and an exhaust valve for discharging a combustion gas are opened and closed according to an operation stroke of the engine in accordance with an operation condition of an automobile. In order to improve the fuel consumption rate of an engine and suppress exhaust gas, a variable valve timing device having a vector cycloid speed change mechanism is known, in which the opening/closing timing of the valves is made variable and is changed in accordance with the operating condition of the engine.
As this variable valve timing apparatus, for example, as shown in fig. 9 and 10, there is a variable valve timing apparatus as follows: a camshaft 41 for driving a valve of an engine and a sprocket 42 for transmitting rotation from the engine and driving the camshaft 41 to rotate are disposed coaxially in a relatively rotatable manner, and rotation of an output shaft 44 of an electric motor 43 disposed coaxially with the camshaft 41 is transmitted to the camshaft 41 via a speed reduction mechanism 45 and a link mechanism 46, so that the camshaft 41 is rotated relative to the sprocket 42, and the rotational phase difference between the two is changed, thereby changing the opening/closing timing of the valve.
The reduction mechanism 45 is configured such that a part of the teeth of the internal gear 47 meshes with an external gear 49 provided in a housing 48 integrated with the sprocket 42, the internal gear 47 is rotatably supported by an eccentric shaft portion 44a of an output shaft 44 of the electric motor 43 through a bearing, and when the output shaft "is relatively rotated with respect to the sprocket 42, the internal gear 47 rotates around the eccentric shaft portion 44a, the reduction mechanism 45 transmits the rotation of the internal gear 47 to the guide plate 50, and further transmits the rotation of the guide plate 50 to the cam plate 41a rotating integrally with the camshaft 41 via a link mechanism 46 constituted by arms 46a, 46b, and the camshaft 41 relatively rotates with respect to the sprocket 42.
By the relative rotation of the camshaft 41 with respect to the sprocket 42, the rotational phase of the camshaft 41 with respect to the rotational phase of the crankshaft can be changed, and the timing of opening and closing the intake valve or the exhaust valve of the engine can be changed.
The above-described electric variable valve timing apparatus has a problem that a mechanism for transmitting the rotation of the output shaft 44 of the electric motor 43 to the camshaft 41 has a complicated structure in which the speed reduction mechanism 45 and the link mechanism 46 are combined, and the apparatus cannot be designed compactly.
In CN102482955A published in 2012, a rotational phase difference between the camshaft and the sprocket is achieved between the sprocket and the camshaft by an RV reducer.
The technical scheme disclosed at present is integrated, and the problems of more parts, complex installation procedure, large volume and the like exist.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a variable valve timing device with a vector cycloid speed change mechanism, which has few parts and small volume.
In order to realize the purpose, the utility model discloses a technical scheme is: a variable valve timing device with a vector cycloid speed change mechanism comprises a camshaft for driving an inlet valve or an exhaust valve of an engine, a chain wheel coaxially rotating with the camshaft, and a motor for changing the rotation phase difference of the camshaft relative to the chain wheel, wherein an output shaft of the motor is linked with the camshaft through the speed change mechanism, the variable valve timing device also comprises a limiting mechanism for limiting the rotation phase difference of the camshaft relative to the chain wheel within the range of a required angle, the chain wheel is provided with an installation cavity for installing the speed change mechanism, the speed change mechanism comprises an eccentric structure arranged on the output shaft of the motor, a cycloid disc eccentrically driven by the eccentric structure and an output part linked with the cycloid disc, the two axial end surfaces of the cycloid disc are respectively an A surface and a B surface, and a plurality of first ball fixing holes and expanding holes which are circumferentially distributed are arranged between the A surface of the cycloid disc and an opposite surface opposite to the A surface on the installation cavity, first ball fixed orifices and enlarged footing one-to-one, be provided with the cycloid groove and around a plurality of second ball fixed orifices that circumference distributes on the B face of cycloid dish and the output between the opposite face relative with the B face, be provided with respectively between first ball fixed orifices and the enlarged footing and between second ball fixed orifices and the cycloid groove and make the cycloid dish do the first ball and the second ball of cycloid motion, the output is connected with the camshaft linkage.
Among the above-mentioned technical scheme, speed change mechanism is three parts only, the sprocket, all through ball transmission between cycloid dish and the output, the part is few, simple to operate, whole size attenuation, the bore of enlarged footing is greater than the ball diameter of first ball, the sprocket is equivalent to speed change mechanism's casing, when the rotational speed of motor is inconsistent with the rotational speed of sprocket, input shaft drive cycloid dish is eccentric motion, because of the sprocket is static relatively, so the cycloid dish is for the sprocket swing, the setting of enlarged footing is exactly for providing the skew space for the cycloid dish, make the drum pendulum can be the cycloid motion, there is the clearance between the outer global of cycloid dish and the inner wall of installation cavity, avoid the cycloid dish to collide the installation intracavity wall when doing cycloid motion, pass through the key-type connection between output and the camshaft, it is rationally distributed.
As a further configuration of the present invention, the bottom surface of the enlarged hole is a central convex annular arc groove, and the first ball can roll in the annular arc groove.
Among the above-mentioned technical scheme, the bottom surface of enlarged part also can be planar, and the preferred annular circular arc groove that is, the bottom of annular circular arc groove is convex, has avoided the stress concentration phenomenon of sword point form, has strengthened the intensity of sprocket or cycloid dish, and annular circular arc groove is radial not break through, has further strengthened the intensity of sprocket or cycloid dish, and the centre of a circle of each annular circular arc groove encloses into a circle.
As a further configuration of the present invention, the vertical distance from the center of the first ball to the center line of the annular arc groove is equal to the eccentric amount of the input shaft.
Among the above-mentioned technical scheme, when first ball was located annular arc inslot, the central line in annular arc groove was to the eccentric volume of first ball centre of sphere between, and first ball is the rolling cooperation with annular arc inslot for the friction is little, and the noise is little, and the loss of use is low, the increase of life-span, and power consumption is few, sparingly drives the electric energy.
As a further setting of the utility model, the sprocket includes the sprocket body and with sprocket body fixed connection's annular apron, first ball fixed orifices or enlarged footing sets up on the inner wall of sprocket body, annular apron lid is established and is realized the spacing cooperation of axial with the output on the output.
Among the above-mentioned technical scheme, the sprocket comprises the sprocket body and the annular apron that coincide and set up, the sprocket body passes through screwed connection with the annular apron, make things convenient for the dismouting like this, also make things convenient for speed change mechanism's installation, the drum portion that has on the sprocket body with the cycloid dish adaptation, the drum portion is horizontal Z style of calligraphy, its both ends correspond with the outer peripheral face of cycloid dish and the outer peripheral face of input shaft respectively, the middle part sets up with the A face of cycloid dish relatively, first ball fixed orifices or enlarged footing set up on the middle part inner wall of drum portion, be provided with first bearing between the tip that the drum portion corresponds with the input shaft and the input shaft, be equipped with the second bearing between the eccentric wheel of cycloid dish and input shaft, reduce friction, reduce the wearing and tearing between the part.
As a further setting of the utility model, stop gear is including setting up first stopper and the second stopper on annular apron and output portion respectively, and first stopper and second stopper constitute the butt spacing cooperation of the rotatory phase difference of restriction output portion for the sprocket through rotating.
Among the above-mentioned technical scheme, because of opening and shutting of (air) intake valve and exhaust valve has the certain limit, so the camshaft can not rotate at will, and the too big structure that can damage (air) intake valve and exhaust valve of rotation range, the (air) intake valve and exhaust valve can't be opened completely to the undersize, and the limit cooperation between the part can be avoided in the setting of first stopper and second stopper, increase of service life.
As a further setting of the utility model, first stopper sets up on annular apron's inboard is global, and quantity is two at least, and the second stopper sets up in one side of output part orientation camshaft, and quantity is one at least, the second stopper is located between two first stoppers.
Among the above-mentioned technical scheme, the second stopper is the motion stroke of second stopper from with one of them first stopper butt to this motion process with another first stopper butt, because of the second stopper is along with output portion pivoted, so the rotatable angle of second stopper is the scope of the rotatory phase difference of output portion for the sprocket promptly, the quantity of preferred first stopper and second stopper can be unanimous, and be evenly distributed, all have a second stopper between every two adjacent first stoppers, the resistance that produces by first stopper and second stopper butt like this distributes evenly, and the resistance is big, spacing effect is better.
As a further setting of the utility model, first stopper sets up on annular apron's inboard is global, and quantity is one at least, and the second stopper sets up in one side of output part orientation camshaft, and quantity is two at least, first stopper is located between two second stoppers.
Among the above-mentioned technical scheme, this motion process that one of them second stopper and first stopper butt to another first stopper and first stopper butt is the motion stroke of second stopper promptly, because of the second stopper is along with output portion pivoted, so the rotatable angle of second stopper is the scope of the rotatory phase difference of output portion relative to the sprocket promptly, the quantity of preferred first stopper and second stopper can be unanimous, and be evenly distributed, all have a first stopper between every two adjacent second stoppers, the resistance that produces by first stopper and second stopper butt like this distributes evenly, and the resistance is big, spacing effect is better.
The present invention will be further described with reference to the accompanying drawings.
Drawings
FIG. 1 is a sectional view of the overall structure of the embodiment of the present invention;
FIG. 2 is a sectional view of the overall structure of the embodiment of the present invention;
FIG. 3 is a schematic view of the A-side of the cycloid disc according to the embodiment of the present invention;
FIG. 4 is a schematic view of a surface B of the cycloid disc according to the embodiment of the present invention;
FIG. 5 is a sectional view of the sprocket and output section according to the embodiment of the present invention;
FIG. 6 is a sectional view of the cycloid disc according to the embodiment of the present invention;
FIG. 7 is an enlarged view of a portion of an embodiment of the present invention;
FIG. 8 is a perspective view of the structure of the embodiment of the present invention;
FIG. 9 is a cross-sectional view of a prior art structure;
fig. 10 is a sectional view taken along line D-D of fig. 9.
Detailed Description
The specific embodiment of the utility model is shown in fig. 1-8, a variable valve timing device with vector cycloid speed change mechanism, including camshaft 1 driving the intake valve or exhaust valve of the engine, sprocket 2 rotating coaxially with camshaft 1 and motor 3 making the camshaft 1 change relative to the rotational phase difference of sprocket 2, the output shaft 31 of motor 3 is linked with camshaft 1 through speed change mechanism 4, also including stop gear 5, this stop gear 5 limits the rotational phase difference of camshaft 1 relative to sprocket 2 within the range of the required angle, the sprocket 2 is provided with the installation cavity 21 for installing speed change mechanism 4, the speed change mechanism 4 includes the eccentric structure arranged on the output shaft 31 of motor 3, the cycloid disc 42 driven by the eccentric structure and the output part 43 linked with cycloid disc 42, the output shaft 31 of motor 3 is connected with the input shaft 41 by key, the rotation direction of the input shaft 41 can rotate forwards or backwards, the rotation speed of the input shaft 41 is equal to or higher than the rotation speed of the chain wheel 2, the eccentric structure comprises the input shaft 41 connected with the output shaft 31 of the motor 3 and an eccentric wheel 411 arranged on the input shaft 41, the eccentric wheel 411 is used for driving the cycloid disc 42 to do eccentric motion, a plurality of expanding holes 423 distributed around the circumferential direction are arranged on an axial A surface 421 of the cycloid disc 42, a plurality of first ball fixing holes 212 distributed around the circumferential direction are arranged on an opposite surface 211 opposite to the A surface 421 on the installation cavity 21, the first ball fixing holes 212 and the expanding holes 423 correspond one by one, of course, a plurality of first ball fixing holes 212 distributed around the circumferential direction can be arranged on the axial A surface 421 of the cycloid disc 42, a plurality of expanding holes 423 distributed around the circumferential direction are arranged on an opposite surface 211 opposite to the A surface 421 on the installation cavity 21, a cycloid groove 424 is arranged on an axial B surface 422 of the cycloid disc 42, a plurality of second ball fixing holes 432 distributed circumferentially are provided on an opposite surface 431 of the output portion 43 opposite to the B-surface 422, of course, a plurality of second ball fixing holes 432 distributed circumferentially may be provided on the axial B-surface 422 of the cycloid disc 42, a cycloid groove 424 is provided on the opposite surface 431 of the output portion 43 opposite to the B-surface 422, a first ball 44 and a second ball 45 for making the cycloid disc 42 perform cycloid movement are respectively provided between the first ball fixing hole 212 and the enlarged hole 423 and between the second ball fixing hole 432 and the cycloid groove 424, and the output portion 43 is linked with the camshaft 1. The speed change mechanism 4 only has three parts, the sprocket 2, all through ball transmission between cycloid dish 42 and the output portion 43, the part is few, simple to operate, whole size attenuation, the bore of enlarged hole 423 is greater than the ball diameter of first ball 44, the sprocket 2 is equivalent to the casing of speed change mechanism 4, when the rotational speed of motor 3 is inconsistent with the rotational speed of sprocket 2, input shaft 41 drives cycloid dish 42 and makes eccentric motion, because the sprocket 2 is relative static, cycloid dish 42 swings for sprocket 2, the setting of hole 423 is in order to provide the skew space for cycloid dish 42, make cycloid dish 42 can be cycloid motion, there is the clearance between the inner wall of installation cavity 21 and the global outside of cycloid dish 42, avoid cycloid dish 42 to collide the installation cavity 21 inner wall when making cycloid motion, connect through the key-type between output portion 43 and the camshaft 1, the overall arrangement is reasonable.
The bottom surface of the enlarged hole 423 is an annular arc groove 4232 with a center 4231 protruding, the height of the center 4231 protruding is small, the end surface of the annular arc groove 4232 can be planar or pointed, the inner wall of the annular arc groove 4232 is attached to the first ball 44, and the first ball 44 can roll in the annular arc groove 4232. The bottom of the annular arc groove is arc-shaped, so that the phenomenon of stress concentration of a cutter point shape is avoided, the strength of the chain wheel 2 or the cycloid disc 42 is enhanced, the annular arc groove is not penetrated in the radial direction, the strength of the chain wheel 2 or the cycloid disc 42 is further enhanced, and the circle center of each annular arc groove 4232 is encircled into a circle.
The vertical distance from the center of the first ball 44 to the center line of the circular arc groove 4232 is equal to the eccentric amount r of the input shaft 41. When the first ball 44 is located in the circular arc groove 4232, the distance between the center line of the circular arc groove 4232 and the center of the first ball 44 is the eccentric amount of the input shaft 41, and the first ball 44 and the circular arc groove 4232 are in rolling fit, so that the friction is small, the noise is small, the service loss is low, the service life is prolonged, the power consumption is low, and the driving electric energy is saved.
The chain wheel 2 comprises a chain wheel body 22 and an annular cover plate 23 fixedly connected with the chain wheel body 22, the first ball fixing holes 212 or the expanding holes 423 are formed in the inner wall of the chain wheel body 22, and the annular cover plate 23 is covered on the output portion 43 to achieve axial limiting matching with the output portion 43. The chain wheel 2 is composed of a chain wheel body 22 and an annular cover plate which are arranged in a matched mode, the chain wheel body 22 is connected with the annular cover plate 23 through screws 24, disassembly and assembly are convenient, and installation of the speed change mechanism 4 are also convenient, an installation cavity 21 is located in the chain wheel body 22, the installation cavity 21 is formed by communicating a first cylindrical cavity 221 and a second cylindrical cavity 222 which are coaxially arranged, the diameters of the first cylindrical cavity 221 and the second cylindrical cavity 222 are different, therefore, an annular connecting surface 223 is formed at the connecting position of the first cylindrical cavity 221 and the second cylindrical cavity 222, the annular connecting surface 223 is opposite to the A surface 421 of the cycloid disc 42, the opposite surface 211, opposite to the A surface of the cycloid disc 42, on the installation cavity 21 is the annular connecting surface 223, a first ball fixing hole 212 or an enlarged hole 423 is arranged on the annular connecting surface 223, a first bearing 01 is arranged between the inner wall of the first cylindrical cavity 221 and the input shaft 41, a second bearing 02 is arranged between the cycloid disc 42 and the eccentric wheel 411 of the input shaft 41, a third bearing 03 is arranged between the output part 43 and the input shaft 41, the first bearing 01 and the second bearing 02 are both ball bearings, the third bearing 03 is formed by a plurality of rollers which sequentially surround to form a ring, friction is reduced, abrasion between components is reduced, and the cycloid disc 42 and the output part 43 are located in the second cylindrical cavity 222.
As shown in fig. 8, the limiting mechanism 5 includes a first limiting block 231 and a second limiting block 433 respectively disposed on the annular cover plate 23 and the output portion 43, and the first limiting block 231 and the second limiting block 433 are rotated to form an abutting limiting fit for limiting a rotational phase difference of the output portion 43 with respect to the sprocket 2. Because of the intake valve has the certain limit with opening and shutting of exhaust valve, so camshaft 1 can not rotate at will, and the too big structure that can damage intake valve and exhaust valve of rotation range, intake valve and exhaust valve can't be opened completely to the undersize, and the limit cooperation between the part can be avoided in the setting of first stopper 231 and second stopper 433, increase of service life.
In the first embodiment, the first limiting blocks 231 are disposed on the inner peripheral surface of the annular cover plate 23, the number of the first limiting blocks is at least two, the second limiting blocks 433 are disposed on one side of the output portion 43 facing the camshaft 1, the number of the second limiting blocks 433 is at least one, and the second limiting blocks 433 are disposed between the two first limiting blocks 231. The second limiting block 433 is the movement stroke of the second limiting block 433 from the process that the second limiting block 231 abuts against one of the first limiting blocks 231, because the second limiting block 433 rotates along with the output portion 43, the rotatable angle of the central point of the second limiting block 433 is the range of the rotational phase difference of the output portion 43 relative to the sprocket 2, the number of the first limiting blocks 231 and the number of the second limiting blocks 433 are preferably equal and are uniformly distributed, one second limiting block 433 is arranged between every two adjacent first limiting blocks 231, so that the resistance generated by the abutting of the first limiting blocks 231 and the second limiting blocks 433 is uniformly distributed, the resistance is large, and the limiting effect is better.
In the second embodiment, the first limiting blocks 231 are disposed on the inner peripheral surface of the annular cover plate 23, the number of the first limiting blocks is at least one, the second limiting blocks 433 are disposed on one side of the output portion 43 facing the camshaft 1, the number of the second limiting blocks is at least two, and the first limiting blocks 231 are located between the two second limiting blocks 433. The moving process that one of the second limiting blocks 433 abuts against the first limiting block 231 to abut against the other first limiting block 231 against the first limiting block 231 is the moving stroke of the second limiting block 433, because the second limiting block 433 rotates along with the output part 43, the rotatable angle of the central point of the second limiting block 433 is the range of the rotational phase difference of the output part 43 relative to the chain wheel 2, the number of the first limiting blocks 231 and the number of the second limiting blocks 433 which are optimized can be consistent and are uniformly distributed, one first limiting block 231 is arranged between every two adjacent second limiting blocks 433, so that the resistance generated by the abutting of the first limiting blocks 231 and the second limiting blocks 433 is uniformly distributed, the resistance is large, and the limiting effect is better.
The utility model discloses do not confine the above-mentioned embodiment to, the general technical personnel in this field can adopt other multiple embodiments to implement according to the utility model discloses a, perhaps all adopt the utility model discloses a design structure and thinking do simple change or change, all fall into the utility model discloses a protection scope.
Claims (7)
1. A variable valve timing apparatus having a vector cycloid speed change mechanism, comprising a camshaft that drives an intake valve or an exhaust valve of an engine, a sprocket that rotates coaxially with the camshaft, and a motor that changes a rotational phase difference of the camshaft with respect to the sprocket, an output shaft of the motor being linked with the camshaft via the speed change mechanism, and a stopper mechanism that limits the rotational phase difference of the camshaft with respect to the sprocket within a range of a desired angle, characterized in that: the chain wheel is provided with an installation cavity for installing a speed change mechanism, the speed change mechanism comprises an eccentric structure arranged on an output shaft of the motor, a cycloid disc eccentrically driven by the eccentric structure and an output part linked with the cycloid disc, the axial two end surfaces of the cycloid disc are respectively an A surface and a B surface, a plurality of first ball fixing holes and expanding holes which are distributed circumferentially are arranged between the A surface of the cycloid disc and the opposite surface of the installation cavity opposite to the A surface, the first ball fixing holes and the expanding holes are in one-to-one correspondence, a cycloid groove and a plurality of second ball fixing holes distributed circumferentially are arranged between opposite faces, opposite to the face B, on the face B and the output portion of the cycloid disc, a first ball and a second ball which enable the cycloid disc to do cycloid movement are arranged between the first ball fixing hole and the expansion hole and between the second ball fixing hole and the cycloid groove respectively, and the output portion is in linkage connection with a camshaft.
2. The variable valve timing device with a vector cycloid speed change mechanism according to claim 1, characterized in that: the bottom surface of the enlarged hole is an annular arc groove with a convex center, and the first ball can roll in the annular arc groove.
3. The variable valve timing device with a vector cycloid speed change mechanism according to claim 2, characterized in that: and the vertical distance from the center of the first ball to the center line of the annular arc groove is equal to the eccentric amount of the input shaft.
4. The variable valve timing device with a vector cycloid speed change mechanism according to claim 1, 2 or 3, characterized in that: the chain wheel comprises a chain wheel body and an annular cover plate fixedly connected with the chain wheel body, a first ball fixing hole or an enlarged hole is formed in the inner wall of the chain wheel body, and the annular cover plate is covered on the output portion to achieve axial limiting matching with the output portion.
5. The variable valve timing device with a vector cycloid speed change mechanism according to claim 4, characterized in that: the limiting mechanism comprises a first limiting block and a second limiting block which are respectively arranged on the annular cover plate and the output part, and the first limiting block and the second limiting block form abutting limiting matching for limiting the rotation phase difference of the output part relative to the chain wheel through rotation.
6. The variable valve timing device with a vector cycloid speed change mechanism according to claim 5, characterized in that: the first limiting blocks are arranged on the circumferential surface of the inner side of the annular cover plate, the number of the first limiting blocks is at least two, the second limiting blocks are arranged on one side, facing the camshaft, of the output portion, the number of the second limiting blocks is at least one, and the second limiting blocks are located between the two first limiting blocks.
7. The variable valve timing device with a vector cycloid speed change mechanism according to claim 5, characterized in that: the first limiting blocks are arranged on the circumferential surface of the inner side of the annular cover plate, the number of the first limiting blocks is at least one, the second limiting blocks are arranged on one side, facing the camshaft, of the output portion, the number of the second limiting blocks is at least two, and the first limiting blocks are located between the two second limiting blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920919334.7U CN210134985U (en) | 2019-06-18 | 2019-06-18 | Variable valve timing apparatus having vector cycloid speed change mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920919334.7U CN210134985U (en) | 2019-06-18 | 2019-06-18 | Variable valve timing apparatus having vector cycloid speed change mechanism |
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| CN210134985U true CN210134985U (en) | 2020-03-10 |
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| CN201920919334.7U Expired - Fee Related CN210134985U (en) | 2019-06-18 | 2019-06-18 | Variable valve timing apparatus having vector cycloid speed change mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110230525A (en) * | 2019-06-18 | 2019-09-13 | 海尚集团有限公司 | Variable valve timing apparatus with vector cycloid gear |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110230525A (en) * | 2019-06-18 | 2019-09-13 | 海尚集团有限公司 | Variable valve timing apparatus with vector cycloid gear |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: ZHEJIANG UNIVERSE FILTER Co. Assignor: HSOAR GROUP Co.,Ltd. Contract record no.: X2021330000378 Denomination of utility model: Variable valve timing device with vector cycloid variable speed mechanism Granted publication date: 20200310 License type: Common License Record date: 20211009 |
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| EE01 | Entry into force of recordation of patent licensing contract | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200310 |
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| CF01 | Termination of patent right due to non-payment of annual fee |