CN104895637B - Conical gear CVTC - Google Patents
Conical gear CVTC Download PDFInfo
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- CN104895637B CN104895637B CN201510392568.7A CN201510392568A CN104895637B CN 104895637 B CN104895637 B CN 104895637B CN 201510392568 A CN201510392568 A CN 201510392568A CN 104895637 B CN104895637 B CN 104895637B
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Abstract
The invention discloses a kind of conical gear CVTC, cam shaft gear, idler gear and travelling gear are conical gear；Travelling gear and cam shaft gear are engaged with idler gear, and are oppositely arranged；Idler gear is fixedly connected with idler gear bearing, and idler gear bearing holder (housing, cover) is loaded on intermediate gear shaft；Intermediate gear shaft upper end is fixedly connected with control bearing, and control bearing holder (housing, cover) is loaded on camshaft；Travelling gear is fixedly connected with travelling gear bearing, and travelling gear bearing holder (housing, cover) is loaded on camshaft；Cam shaft gear is arranged on camshaft by cam axle key；Sprocket wheel is set on travelling gear, is connected by steering sprocket key with travelling gear；Control device includes motor and one-direction driving apparatus, and intermediate gear shaft passes through one-direction driving apparatus and motor connection；Phase place change of the present invention is stable, simple in construction, and transmission accuracy and transmission efficiency are improved, and noise is small.
Description
Technical field
The present invention relates to the valve timing control mechanism of field of internal combustion engine, the more particularly to air inlet system and exhaust system of internal combustion engine.
Background technology
Under the overall background that high pollution, the energy lack, energy-conservation becomes new social concerns focus with emission reduction；Automobile conduct
One of leading role of energy resource consumption and air pollution, the energy-conservation of internal combustion engine just seems with emission reduction to be even more important；In recent years, changeable air valve
Timing（VVT）Technology putative contribute to the technology of combustion engine energy-saving emission reduction and favored as one；And continuous variable
Valves Technology certainly one of optimal selection therein, this quasi-valve variable timing mechanism can engine full working scope scope
Regulation of the interior realization to valve timing, reaches optimal valve timing control scheme.
Research for CVTC is a lot, but existing CVTC is present
Some problems, such as the current popular this side in the phase angle changed by hydraulic coupling between camshaft and travelling gear
Case, due to hydraulic pressure pulsation and compressibility the problems such as so that phase place change is not very stable, also relate to sealing etc. ask
Topic, mechanism for implementing difficulty is larger.
The content of the invention
It is an object of the invention to provide the conical gear continuous variable timing mechanism that a kind of phase place change is stable.
The technical solution adopted by the present invention is：A kind of conical gear continuous variable timing mechanism, including idler gear, centre
Gear shaft, camshaft, cam shaft gear, travelling gear, sprocket wheel and control device；The cam shaft gear, idler gear and biography
Moving gear is conical gear；The travelling gear and cam shaft gear are engaged with idler gear, and are oppositely arranged；The centre
Gear is fixedly connected with idler gear bearing, and idler gear bearing holder (housing, cover) is loaded on intermediate gear shaft；The intermediate gear shaft upper end
It is fixedly connected with control bearing, control bearing holder (housing, cover) is loaded on camshaft；The travelling gear is fixedly connected with travelling gear bearing,
Travelling gear bearing holder (housing, cover) is loaded on camshaft；The cam shaft gear is arranged on camshaft by cam axle key；The sprocket wheel
It is set on travelling gear, is connected by steering sprocket key with travelling gear；The control device includes motor and one-direction driving apparatus,
Intermediate gear shaft passes through one-direction driving apparatus and motor connection.
Preferably, being also fixedly connected with control bearing block between the intermediate gear shaft upper end and control bearing, control
Bearing sleeve is loaded on control bearing.
Preferably, the travelling gear is identical with the cam shaft gear number of teeth.
Preferably, the one-direction driving apparatus includes push rod and swing arm；Cut with scissors with intermediate gear shaft one end of the push rod
Connect, the other end is hinged with swing arm；Swing arm passes through power transmission shaft and motor connection.
Preferably, being additionally provided with worm gear and worm screw between the swing arm and power transmission shaft；The worm gear and swing arm and push rod
The opposite end being hinged is fixedly connected；Worm gear is rotatably arranged on engine body centrally through fulcrum；Worm and wheel is nibbled
Close, and pass through power transmission shaft and motor connection.
Preferably, the central axis of the central axis of the intermediate gear shaft, push rod central axis and swing arm is same
In plane, and the plane is perpendicular to the central axis of camshaft and the central axis of worm gear.
Preferably, one end of the push rod is hinged by push rod hinge and intermediate gear shaft, the other end is cut with scissors by swing arm
Chain is hinged with swing arm.
The beneficial effects of the invention are as follows：
（1）The present invention using conical gear realize transmission and phase change, phase change is accurate, controlling organization is simple and
Save space；
（2）The present invention uses Bevel Gear Drive, transmission accuracy and transmission efficiency, and noise is small；
（3）Worm gear and worm structure are used in the present invention, with auto-lock function, without addition thereto after the completion of timing adjustment
To keep timing to change.
Brief description of the drawings
Fig. 1 is rigging position relation schematic diagram of the present invention.
Fig. 2 is control device structural representation of the present invention.
In figure：1- idler gears, 2- intermediate gear shafts, 3- idler gear bearings, 4- camshafts, 5- cam axle keys, 6- is convex
Wheel axle gear, 7- control bearings, 8- control bearing blocks, 9- travelling gear bearings, 10- travelling gears, 11- sprocket wheels, 12- sprocket wheels
Key, 13- engine bodies, 14- push rod hinges, 15- push rods, 16- swing arm hinges, 17- swing arms, 18- worm gears, 19- worm screws, 20-
Power transmission shaft, 21- motors.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 2, conical gear CVTC, including idler gear 1, intermediate gear shaft 2,
Camshaft 4, cam shaft gear 6, travelling gear 10, sprocket wheel 11 and control device；The cam shaft gear 6, idler gear 1 and biography
Moving gear 10 is conical gear；The travelling gear 10 and cam shaft gear 6 are engaged with idler gear 1, and are oppositely arranged；Institute
State idler gear 1 to be fixedly connected with idler gear bearing 3, idler gear bearing 3 is set on intermediate gear shaft 2；The centre
The upper end of gear shaft 2 is fixedly connected with control bearing 7, and control bearing 7 is set on camshaft 4；The travelling gear 10 and transmission
Gear-bearing 9 is fixedly connected, and travelling gear bearing 9 is set on camshaft 4；The cam shaft gear 6 is set by cam axle key 5
It is placed on camshaft 4；The sprocket wheel 11 is set on travelling gear 10, is connected by steering sprocket key 12 with travelling gear 10；It is described
Control device includes motor 21 and one-direction driving apparatus, and intermediate gear shaft 2 is connected by one-direction driving apparatus with motor 21；Cam
Shaft gear 6, idler gear 1 and travelling gear 10 use conical gear, and transmission accuracy is higher, transmission efficiency is higher, and phase
Change and more stablize.
Control bearing block 8 is also fixedly connected between the upper end of intermediate gear shaft 2 and control bearing 7, bearing block 8 is controlled
It is set on control bearing 7；In the same plane, and intermediate gear shaft 2 is vertical for the axis of intermediate gear shaft 2 and camshaft 4
In camshaft 4, intermediate gear shaft 2 and the connection of camshaft 4 can cause whole mechanism to be an entirety, and transmission process is more steady
Fixed, precision is higher.
The travelling gear 10 is identical with the number of teeth of cam shaft gear 6；The one-direction driving apparatus includes push rod 15 and swing arm
17；One end of the push rod 15 is hinged with intermediate gear shaft 2, and the other end is hinged with swing arm 17；Swing arm 17 by power transmission shaft 20 with
Motor 21 is connected；Worm gear 18 and worm screw 19 are additionally provided between the swing arm 17 and power transmission shaft 20；The worm gear 18 and swing arm 17
The opposite end being hinged with push rod 15 is fixedly connected；Worm screw 19 engages with worm gear 18, and is connected by power transmission shaft 20 with motor 21；
Worm gear 18 is rotatably arranged on engine body 13 centrally through fulcrum；Using worm gear 18 and the structure of worm screw 19, have
Auto-lock function, keeps timing constant, structure is more stablized after the completion of timing adjustment without addition thereto.
Central axis, the central axis of push rod 15 and the central axis of swing arm 17 of the intermediate gear shaft 2 are in same plane
It is interior, and the plane is perpendicular to the central axis of camshaft 4 and the central axis of worm gear 18；This structure design can cause just
When adjustment more stablize and accurate.
One end of the push rod 15 is hinged by push rod hinge 14 with intermediate gear shaft 2, and the other end passes through swing arm hinge 16
It is hinged with swing arm 17；This structure design causes between push rod 15 and intermediate gear shaft 2, the connection between push rod 15 and swing arm 17
More stablize, phase transmission is more accurate.
In use, sprocket wheel 11 is connected with the bent axle of engine, the motion band movable sprocket 11 of bent axle is moved, because sprocket wheel 11 is logical
Steering sprocket key 12 is crossed to be connected with travelling gear 10, and sprocket wheel 11 and travelling gear 10 are coaxial, so sprocket wheel 11 and travelling gear 10
It is synchronized to rotate；Because travelling gear 10 is engaged with idler gear 1, the rotation of travelling gear 10 drives idler gear 1 to rotate；Due to
Idler gear 1 is intermeshed with cam shaft gear 6, and the rotational band moving cam shaft gear 6 of idler gear 1 is rotated；Due to driving cog
Take turns 10 numbers of teeth identical with the number of teeth of cam shaft gear 6, therefore travelling gear 10 is identical with the wheel speed of cam shaft gear 6；Due to cam
Shaft gear 6, idler gear 1 and travelling gear 10 are conical gear, and the motion of travelling gear 10 passes to convex through idler gear 1
The rear of wheel axle gear 6 is to change, and the direction of rotation of cam shaft gear 6 is opposite with travelling gear 10；Cam shaft gear 6 passes through cam
Axle key 5 is arranged on camshaft 4, the rotation of the rotational band moving cam axle 4 of cam shaft gear 6, and the motion of bent axle has passed to convex
Wheel shaft 4, realizes the transmission process of valve actuating mechanism；Camshaft 4 is installed on the engine and can rotated, for driving opening for valve
Open and close.
In use, motor 21 drives worm screw 19 to rotate to an angle by power transmission shaft 20, due to worm screw 19 and the phase of worm gear 18
Mutually engagement, worm screw 19 drives worm gear 18 to rotate a certain angle；Because worm gear 18 is fixedly connected with swing arm 17, the rotation of worm gear 18
Swing arm 17 is driven to rotate；Swing arm 17 promotes push rod 15 to move by swing arm hinge 16, during push rod 15 is promoted by push rod hinge 14
Between gear shaft 2 move；Intermediate gear shaft 2 drives idler gear 1 and control bearing block 8 to be rotated a certain angle around camshaft 4；By
Engaged simultaneously with travelling gear 10 and cam shaft gear 6 in idler gear 1, so cam shaft gear 6 will be relative to travelling gear
10 rotate a certain angle；Cam shaft gear 6 is equal to intermediate gear shaft 2 around camshaft relative to the anglec of rotation of travelling gear 10
2 times of 4 anglecs of rotation；Because the motion of travelling gear 10 and the motion of engine crankshaft are synchronous in proportion, so camshaft tooth
Wheel 6 rotates a certain angle relative to travelling gear 10 to rotate a certain angle equivalent to relative to engine crankshaft；While by
It is synchronous with the rotation of camshaft 4 in cam shaft gear 6, therefore changed equivalent to the relative position of camshaft 4 and bent axle；Arrive
This, realizes relative change of the camshaft 4 relative to engine crankshaft phase, realizes the change of valve timing；Motor 21 leads to
Crossing the driving worm screw 19 of power transmission shaft 20 drives worm gear 18 to turn clockwise after certain angle, motion through swing arm 17, swing arm hinge 16, push away
Bar 15 and push rod hinge 14 pass to intermediate gear shaft 2, and pull intermediate gear shaft 2 and idler gear 1 clockwise around camshaft 4
Rotate to an angle；Because cam direction of rotation is counterclockwise, therefore timing in this case will be postponed；Conversely, when worm gear 18
Direction of rotation for it is counterclockwise when, timing will in advance；2 times of angle equal to the anglec of rotation of camshaft 4 that timing shifts to an earlier date or postponed；
When valve timing, which changes, to complete, worm gear 18 and worm screw 19 lock, and keep timing change constant.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (5)
1. a kind of conical gear CVTC, it is characterised in that：Including idler gear (1), intermediate gear shaft
(2), camshaft (4), cam shaft gear (6), travelling gear (10), sprocket wheel (11) and control device；The cam shaft gear
(6), idler gear (1) and travelling gear (10) are conical gear；The travelling gear (10) and cam shaft gear (6) are with
Between gear (1) engage, and be oppositely arranged；The idler gear (1) is fixedly connected with idler gear bearing (3), intermediate gear shaft
(3) are held to be set on intermediate gear shaft (2)；Intermediate gear shaft (2) upper end is fixedly connected with control bearing (7), control shaft
(7) are held to be set on camshaft (4)；The travelling gear (10) is fixedly connected with travelling gear bearing (9), travelling gear bearing
(9) it is set on camshaft (4)；The cam shaft gear (6) is arranged on camshaft (4) by cam axle key (5)；The chain
Wheel (11) is set on travelling gear (10), is connected by steering sprocket key (12) with travelling gear (10)；The control device includes
Motor (21) and one-direction driving apparatus, intermediate gear shaft (2) are connected by one-direction driving apparatus with motor (21)；The unidirectional drive
Dynamic device includes push rod (15) and swing arm (17)；One end of the push rod (15) is hinged with intermediate gear shaft (2), the other end and pendulum
Arm (17) is hinged；Swing arm (17) is connected by power transmission shaft (20) with motor (21)；Between the swing arm (17) and power transmission shaft (20)
It is additionally provided with worm gear (18) and worm screw (19)；The worm gear (18) is fixed with the opposite end that swing arm (17) and push rod (15) are hinged to be connected
Connect；Worm gear (18) is rotatably arranged at centrally through fulcrum on engine body (13)；Worm screw (19) engages with worm gear (18),
And it is connected by power transmission shaft (20) with motor (21)；The cam shaft gear (6), travelling gear (10) and control bearing (7)
It is coaxially disposed.
2. conical gear CVTC according to claim 1, it is characterised in that：The intermediate gear shaft
(2) control bearing block (8) is also fixedly connected between upper end and control bearing (7), control bearing block (8) is set in control bearing
(7) on.
3. conical gear CVTC according to claim 1, it is characterised in that：The travelling gear
(10) it is identical with cam shaft gear (6) number of teeth.
4. conical gear CVTC according to claim 1, it is characterised in that：The intermediate gear shaft
(2) in the same plane, and the plane is vertical for central axis, push rod (15) central axis and the central axis of swing arm (17)
In the central axis and the central axis of worm gear (18) of camshaft (4).
5. conical gear CVTC according to claim 1, it is characterised in that：The push rod (15)
One end is hinged by push rod hinge (14) with intermediate gear shaft (2), and the other end is hinged by swing arm hinge (16) with swing arm (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510392568.7A CN104895637B (en) | 2015-07-03 | 2015-07-03 | Conical gear CVTC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510392568.7A CN104895637B (en) | 2015-07-03 | 2015-07-03 | Conical gear CVTC |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104895637A CN104895637A (en) | 2015-09-09 |
| CN104895637B true CN104895637B (en) | 2017-08-29 |
Family
ID=54028548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510392568.7A Active CN104895637B (en) | 2015-07-03 | 2015-07-03 | Conical gear CVTC |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104895637B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825321A (en) * | 2018-05-22 | 2018-11-16 | 浙江大学 | A kind of single shaft bevel gear valve actuating mechanism |
| CN108825325A (en) * | 2018-09-07 | 2018-11-16 | 吉林大学 | A kind of variable valve mechanism for engine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5237615A (en) * | 1975-09-19 | 1977-03-23 | Mitsubishi Motors Corp | Variable valve timing device |
| CN86103823A (en) * | 1986-05-20 | 1987-12-02 | 弗雷德里克·迈克尔·斯蒂沃西 | Variable rotary devices |
| GB2202917A (en) * | 1987-03-17 | 1988-10-05 | Ford Motor Co | Variable phase shift mechanism |
| DE3737602A1 (en) * | 1987-11-05 | 1989-05-18 | Interatom | Device for changing the control times of the valves of an internal combustion engine by means of a differential gear |
| US7475661B2 (en) * | 2006-10-17 | 2009-01-13 | Delphi Technologies, Inc. | Camshaft phaser having a differential bevel gear system |
| CN204729145U (en) * | 2015-07-03 | 2015-10-28 | 西华大学 | Cone gear CVTC |
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2015
- 2015-07-03 CN CN201510392568.7A patent/CN104895637B/en active Active
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| Publication number | Publication date |
|---|---|
| CN104895637A (en) | 2015-09-09 |
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Effective date of registration: 20200518 Address after: No. 917, floor 9, building 1, No. 666, middle section of Tianfu Avenue, hi tech Zone, Chengdu, Sichuan 610000 Patentee after: Chengdu Feiqing Aviation Technology Co., Ltd Address before: 610039, No. 999, Jin Zhou road, Jinniu District, Sichuan, Chengdu Patentee before: XIHUA University |
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