CN201090253Y - Distribution transmission mechanism of motorcycle engine - Google Patents
Distribution transmission mechanism of motorcycle engine Download PDFInfo
- Publication number
- CN201090253Y CN201090253Y CNU2007201250283U CN200720125028U CN201090253Y CN 201090253 Y CN201090253 Y CN 201090253Y CN U2007201250283 U CNU2007201250283 U CN U2007201250283U CN 200720125028 U CN200720125028 U CN 200720125028U CN 201090253 Y CN201090253 Y CN 201090253Y
- Authority
- CN
- China
- Prior art keywords
- fluted disc
- distribution
- duplex
- axle
- transmission shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Valve Device For Special Equipments (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The utility model relates to a gas distribution transmission mechanism for a motorcycle engine. Duplex gear discs are respectively arranged on a shaft and a crankshaft of a gas-distribution cam mechanism; duplex gear discs are respectively arranged at both ends of a transmission shaft; the transmission shaft is perpendicular to the plane between the shaft and the crankshaft of the gas-distribution cam mechanism; the transmission shaft is supported in a step-shaped hole arranged on a cylinder body, by a bearing; each duplex gear disc is provided with two gear discs of different diameters; the duplex gear discs at both ends of the transmission shaft are respectively vertically intersected and correspondingly meshed with the duplex gear discs on the shaft and the crankshaft of the gas-distribution cam mechanism, wherein, the meshing way goes as follows, the two gear discs of longer diameter in the two duplex gear discs are meshed with each other, while the two gear discs of shorter diameter are meshed with each other; the distance between two meshed gear discs of different diameters in the two duplex gear discs is equal. The utility model has relatively smaller weight and rotating inertia quantity as well as stable and reliable transmission and can reduce production cost.
Description
Technical field
The novel motorcycle engine field that relates to of this use, particularly a kind of distribution driving mechanism of motorcycle engine.
Background technique
The drive mechanism of the gas distribution system of existing motorcycle engine mainly is divided into chain-driven, push rod transmission and gear transmission, chain-driven and gear transmission are applicable to the OHC motor, wherein all are better than chain-driven with gear transmission on accuracy, stability and the serviceability of transmitting timing.Gear transmission divides for again by column gear transmission and Bevel Gear Drive.Column gear transmission is that the cylindrical gears by a plurality of parallel axes is meshing with each other between bent axle and camshaft, the power of bent axle is passed to OHC by these cylindrical gearss, driving valve rocker by camshaft and control the unlatching of inlet and outlet door, close, is that engine chamber is carried combination gas or combustion gas.Because the OHC of OHC motor is all longer relatively apart from the distance of bent axle usually, therefore a plurality of cylindrical gears transferring power just need be set, perhaps adopt the bigger cylindrical gears transferring power of diameter, but, this dual mode all can increase the volume of motor, increase the fabricating cost of motor thus, and be unfavorable for the development of motorcycle engine miniaturization.Bevel Gear Drive is that cone gear is installed respectively on bent axle and OHC, and by respectively with bevel pinion shaft up and down the cone gear at two ends be meshed, the power of bent axle is passed to OHC by bevel pinion shaft, driving valve rocker by camshaft and control the unlatching of inlet and outlet door, close, is that engine chamber is carried combination gas or combustion gas.Though the precision of Bevel Gear Drive is higher relatively, and only just can pass to OHC to the power on the bent axle, the volume of motor is reduced, help motor miniaturization development by a bevel pinion shaft.But, because it is higher to make the cone gear cost, and the thickness of the cone gear of engines distribution driving mechanism is generally more than 10mm, Manufacturing material is more relatively, weight is heavier relatively, the rotator inertia amount is also relatively large, bevel pinion shaft rotates just easy disalignment, two ends up and down, back, thereby have influence on the engagement between cone gear, therefore for avoiding two ends about the bevel pinion shaft phenomenon of disalignment to occur, engine design and manufacture difficulty also increase thereupon, are unfavorable for reducing production costs.
Summary of the invention
The purpose of this utility model is at above-mentioned the deficiencies in the prior art, and a kind of distribution driving mechanism of motorcycle engine is provided, and its quality is relative with the rotator inertia amount less, and transmission is reliable and stable, and can reduce production costs.
The technical solution of the utility model is achieved in that and comprises that engine cylinder covers the distribution cam mechanism of installation, the bent axle that engine crankcase is installed, distribution cam mechanism is parallel with bent axle, the axle of described distribution cam mechanism upward and on the bent axle is separately installed with the duplex fluted disc, the two ends of a transmission shaft are separately installed with the duplex fluted disc, between the axle and bent axle of transmission shaft perpendicular to distribution cam mechanism, in the step hole that transmission shaft is provided with on cylinder block by bearings, described duplex fluted disc has two fluted discs of different-diameter, the duplex fluted disc at transmission shaft two ends respectively with distribution cam mechanism the axle, duplex fluted disc on the bent axle is 90 degree and intersects corresponding engagement, its mesh form is that two big fluted discs of the diameter of two duplex fluted discs are meshed, two fluted discs that diameter is little are meshed, the spacing between two fluted discs of the different-diameter on two duplex fluted discs of corresponding engagement equate.
Owing to adopted such scheme, cover between the bent axle that the distribution cam mechanism of installation and engine crankcase install at engine cylinder a transmission shaft vertically is set, the two ends of transmission shaft are separately installed with the duplex fluted disc, the axle of distribution cam mechanism upward and on the bent axle is separately installed with the duplex fluted disc, the duplex fluted disc at the two ends of transmission shaft is the crossing corresponding engagement of 90 degree with the axle and the duplex fluted disc on the bent axle of distribution cam mechanism respectively, the power of bent axle transmission is passed to distribution cam mechanism by transmission shaft, the work of control motor inlet and outlet door.The thickness of two fluted discs of the different-diameter on the described duplex fluted disc is 1～2mm, because of its thin thickness, the gear that is thin plate-like, the material that adopts is few, and fluted disc can adopt direct punch process moulding, or a plurality of fluted disc stacks and carry out gear hobbing processing, can economical with materials, can cut down finished cost again, can also improve work efficiency; And adopt the fluted disc of this thin thickness, and can reduce weight, reduce the rotator inertia amount, can avoid transmission shaft the phenomenon of disalignment to occur in two ends up and down, guarantee the stability of engagement.Described duplex fluted disc has two fluted discs of different-diameter, spacing between the fluted disc of two different-diameters be two fluted discs the standard pitch diameter difference 1/2nd, the duplex fluted disc that can guarantee the transmission shaft two ends like this is 90 degree with the axle of distribution cam mechanism, duplex fluted disc on the bent axle respectively and intersects corresponding engagement, the transmission of power of the crossing diaxon of solution.Its mesh form is that two big fluted discs of the diameter of two duplex fluted discs are meshed, two fluted discs that diameter is little are meshed, the spacing between two fluted discs of the different-diameter on two duplex fluted discs of corresponding engagement equate, guarantee the accuracy that meshes between two duplex fluted discs.
Of the present utility model simple in structure, its lighter weight, the rotator inertia amount is little, the transmission accuracy height, transmission is reliable and stable, and its combination property is better than Bevel Gear Drive; And the fluted disc processing cost is low, and material therefor is few, can save production cost.
The utility model is described in further detail below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is a kind of example structure schematic representation of the present utility model;
Fig. 2 is the sectional drawing of duplex fluted disc of the present utility model;
Fig. 3 is the schematic representation of transmission shaft of the present utility model;
Fig. 4 is the another kind of embodiment's of the utility model a structural representation;
Fig. 5 is the another kind of embodiment's of the utility model a sectional drawing.
In the accompanying drawing, 1,1a, 1b be camshaft, 2 are the distribution axle, 3,4a, 4b be cylindrical gears, 5a, 5b, 5c, 5d are the duplex fluted disc, and 6a, 6b are bearing, and 7 is transmission shaft, and 8 is bent axle, 9 is valve, and 10 is cylinder head, and 11 is cylinder block, and 12 is piston, 13 is connecting rod, and 14 is crankcase, and 15a, 15b are bearing, and 16a, 16b are bearing, 17a, 17b are valve rocker, and 31 is tangent plane, and 32 is large fluted disc, and 33 is small tooth plate, 34 is the fluted disc seat, and 35 is endoporus, and 36 is keyway.
Embodiment
Fig. 1 to Fig. 3 is a kind of embodiment of the present utility model.The distribution cam mechanism of motor is installed on the cylinder head 10 of motor, bent axle 8 is installed on the engine crankcase 14, described distribution cam mechanism is provided with a camshaft 1, be respectively fitted with two bearing 15a on this camshaft 1,15b, two bearings are installed in respectively in cylinder head 10 bearing holes, advancing on the camshaft 1, the corresponding respectively contact of exhaust cam is installed in two valve rocker 17a on the cylinder head 10, the end of 17b, two valve rocker 17a, the other end of 17b respectively with advance, exhaust valve 9 connects, and is waved and is controlled into by camshaft 1 a rotating band rocking arm of taking offence, the unlatching of exhaust valve 9, close.The camshaft 1 of described distribution cam mechanism is parallel with bent axle 8, on the camshaft 1 He on the bent axle 8 duplex fluted disc 5a, a 5d is installed respectively, and the two ends of a transmission shaft 7 respectively are equipped with duplex fluted disc 5b, a 5c, and transmission shaft 7 is perpendicular between camshaft 1 and the bent axle 8.Described these duplex fluted discs all have two fluted discs of size of different-diameter, and the thickness of two fluted discs of size is 1～2mm, and this relatively thin fluted disc can either economical with materials, help processing again, and quality is lighter relatively.The large fluted disc 32 and the small tooth plate 33 of duplex fluted disc is fixedly connected on the axial two ends of a fluted disc seat 34 respectively, the axial two ends of fluted disc seat 34 are respectively equipped with the positioning step of fluted disc, positioning step is provided with the tangent plane 31 that is used for circumferential fixed gear plate, with the positioning step corresponding hole of two fluted discs of size by being provided with, be engaged in respectively form on the positioning step at fluted disc seat 34 two ends circumferentially fixing, the duplex fluted disc is fixedlyed connected with axle by fluted disc seat 34, its fixedly connected keyway 36 and keyway that is provided with that is provided with by the circle center hole 35 of fluted disc seat 34, circumferentially fixing with key, and with the tapped hole 37 screw-thread fit axial restraints of screw and the setting of axle journal end; Perhaps fluted disc seat 34 being interference fitted in axle goes up fixing.Spacing between large fluted disc 32 and the small tooth plate 33 be the size two fluted discs the standard pitch diameter difference 1/2nd, the spacing between two fluted discs of size on two duplex fluted discs of corresponding engagement equate, can guarantee the duplex fluted disc 5b at transmission shaft 7 two ends, 5c respectively with camshaft 1, duplex fluted disc 5a on the bent axle 8,5d is 90 degree and intersects corresponding engagement, its mesh form is that the large fluted disc of the duplex fluted disc 5a on large fluted disc and the camshaft 1 of duplex fluted disc 5b of transmission shaft 7 upper ends is 90 degree and intersects corresponding engagement, and the small tooth plate of the duplex fluted disc 5a on the small tooth plate of the duplex fluted disc 5b of transmission shaft 7 upper ends and the camshaft 1 is 90 and spends crossing corresponding engagement; The small tooth plate of duplex fluted disc 5d on the small tooth plate of the duplex fluted disc 5c of transmission shaft 7 lower ends and the bent axle 8 is 90 degree and intersects corresponding engagement, and the small tooth plate of the duplex fluted disc 5d on the small tooth plate of the duplex fluted disc 5c of transmission shaft 7 lower ends and the bent axle 8 is 90 and spends crossing corresponding engagement.In the step hole that transmission shaft 7 is provided with on cylinder block 11 by bearings, described transmission shaft 7 is the big multidiameter shaft of stage casing diameter, be equipped with small one and large one two bearing 6a, 6b on the transmission shaft 7, above big bearing 6a is positioned at, below little bearing 6b is positioned at, two bearings adopt interference fit or transition fit on transmission shaft 7, and are spacing by the shaft shoulder respectively, and large and small bearing is limited in the top bar hole shoulder in hole of cylinder block 11 respectively.Bent axle 8 links to each other with piston 12 by connecting rod 13.
The working procedure of present embodiment is performed such, the piston 12 of motor moves through connecting rod 13 and drives bent axle 8 rotations, the duplex fluted disc 5c that duplex fluted disc 5d on the bent axle 8 drives transmission shaft 7 lower ends rotates, duplex fluted disc 5c drives transmission shaft 7 and rotates, duplex fluted disc 5a on the camshaft 1 of the duplex fluted disc 5b drive distribution cam mechanism of transmission shaft 7 upper ends rotates, transmission of power is given the camshaft 1 of distribution cam mechanism, camshaft is controlled into by two valve rockers, the unlatching of exhaust valve, close, be the firing chamber input combination gas of motor or the waste gas in the eliminating firing chamber.Intersect the power of diaxon owing to adopt the transmission of duplex fluted disc, its motional inertia amount is little, can avoid transmission shaft up and down the phenomenon of disalignment to occur in two ends, and motion and transmission of power are more steady, control to the inlet and outlet door is more accurate, helps improving the combination property of motor.
Fig. 4, Fig. 5 are another kind of embodiment of the present utility model.The distribution cam mechanism of motor is installed on the cylinder head 10 of motor, bent axle 8 is installed on the engine crankcase 14, described distribution cam mechanism is provided with two camshaft 1a, 1b, be respectively fitted with two bearing 16a, 16b on two camshafts, two bearing 16a, 16b on two camshaft 1a, the 1b are installed in respectively in cylinder head 10 bearing holes, and two camshaft 1a, 1b are last, and each is circumferentially fixing and be pressed with cylindrical gears 4a, a 4b with screw with key; Distribution cam mechanism also is provided with a distribution axle 2, be respectively fitted with two bearing 15a, 15b on the distribution axle 2, two bearing 15a, 15b are installed in respectively in cylinder head 10 bearing holes, be set with a cylindrical gears 3 on the distribution axle 2, cylindrical gears circumferentially is fixed on the distribution axle with key, and uses the collar axially locating.Cylindrical gears 4a, 4b on this cylindrical gears 3 and two camshaft 1a, the 1b mesh respectively, and the cam on two camshafts contacts with inlet and outlet door 9 respectively, the unlatching of cam control inlet and outlet door 9, close.The distribution axle 2 of described distribution cam mechanism is parallel with bent axle 8, and duplex fluted disc 5a, a 5d respectively are installed on distribution axle 2 and the bent axle 8, and the two ends of a transmission shaft 7 respectively are equipped with duplex fluted disc 5b, a 5c, and transmission shaft 7 is perpendicular between camshaft 1 and the bent axle 8.The structure of described duplex fluted disc is identical with the structure of previous embodiment, its mode that is installed on transmission shaft 7, camshaft 1, the bent axle 8 is identical with the mode of previous embodiment, and the duplex fluted disc 5d on the distribution axle 2 on duplex fluted disc 5a, the bent axle 8 is also identical with engagement and the previous embodiment of transmission shaft duplex fluted disc 5b, 5c at two ends about in the of 7.Be equipped with small one and large one two bearing 6a, 6b on the transmission shaft 7, above big bearing 6a was positioned at, below little bearing 6b was positioned at, two bearings adopted interference fit or transition fit on transmission shaft 7, spacing by the shaft shoulder respectively, large and small bearing is limited in the top bar hole shoulder in hole of cylinder block 11 respectively.Bent axle 8 links to each other with piston 12 by connecting rod 13.
The working procedure of present embodiment is performed such, the piston 12 of motor moves through connecting rod 13 and drives bent axle 8 rotations, the duplex fluted disc 5c that duplex fluted disc 5d on the bent axle 8 drives transmission shaft 7 lower ends rotates, duplex fluted disc 5c drives transmission shaft 7 and rotates, duplex fluted disc 5a on the distribution axle 2 of the duplex fluted disc 5b drive distribution cam mechanism of transmission shaft 7 upper ends rotates, duplex fluted disc 5a drives distribution axle 2 and rotates, cylindrical gears 3 on the distribution axle 2 drives two camshaft 1a simultaneously, cylindrical gears 4a on the 1b, 4b rotates, two camshaft 1a, 1b rotates thereupon, transmission of power is fed, exhaust valve, control is advanced, the unlatching of exhaust valve, close, be the firing chamber input combination gas of motor or the waste gas in the eliminating firing chamber.Intersect the power of diaxon owing to adopt the transmission of duplex fluted disc, its motional inertia amount is little, can avoid transmission shaft up and down the phenomenon of disalignment to occur in two ends, and motion and transmission of power are more steady, control to the inlet and outlet door is more accurate, helps improving the combination property of motor.
The utility model adopts said structure, aligns the timing scale of the duplex fluted disc that intersects diaxon during installation easily, and it is extremely convenient to install, but also has reduced the manufacture difficulty of cylinder head.
Claims (7)
1. the distribution driving mechanism of a motorcycle engine, comprise that engine cylinder covers the distribution cam mechanism of installation, the bent axle that engine crankcase is installed, distribution cam mechanism is parallel with bent axle, it is characterized in that: the axle of described distribution cam mechanism upward and on the bent axle is separately installed with the duplex fluted disc, the two ends of a transmission shaft are separately installed with the duplex fluted disc, between the axle and bent axle of transmission shaft perpendicular to distribution cam mechanism, in the step hole that transmission shaft is provided with on cylinder block by bearings, described duplex fluted disc has two fluted discs of different-diameter, the duplex fluted disc at transmission shaft two ends respectively with distribution cam mechanism the axle, duplex fluted disc on the bent axle is 90 degree and intersects corresponding engagement, its mesh form is that two big fluted discs of the diameter of two duplex fluted discs are meshed, two fluted discs that diameter is little are meshed, the spacing between two fluted discs of the different-diameter on two duplex fluted discs of corresponding engagement equate.
2. the distribution driving mechanism of motorcycle engine according to claim 1, it is characterized in that: described distribution cam mechanism is provided with two camshafts and a distribution axle, be respectively equipped with cylindrical gears on two camshafts and the distribution axle, cylindrical gears on cylindrical gears on the distribution axle and two camshafts meshes respectively, the duplex fluted disc is installed on the distribution axle is the crossing corresponding engagement of 90 degree with the duplex fluted disc of transmission shaft upper end.
3. the distribution driving mechanism of motorcycle engine according to claim 1 and 2, it is characterized in that: the thickness of two fluted discs of the different-diameter on the described duplex fluted disc is 1～2mm.
4. the distribution driving mechanism of motorcycle engine according to claim 3 is characterized in that: the spacing between two fluted discs of the different-diameter on the described duplex fluted disc be two fluted discs the standard pitch diameter difference 1/2nd.
5. the distribution driving mechanism of motorcycle engine according to claim 1 and 2, it is characterized in that: two fluted discs of the different-diameter of described duplex fluted disc are fixedly connected on the axial two ends of a fluted disc seat respectively, and the fluted disc seat is fixedly connected on the axle.
6. the distribution driving mechanism of motorcycle engine according to claim 5, it is characterized in that: the axial two ends of described fluted disc seat are provided with the positioning step of fluted disc, and two fluted discs are engaged in respectively on the positioning step at fluted disc seat two ends.
7. the distribution driving mechanism of motorcycle engine according to claim 1 and 2 is characterized in that: be equipped with two bearings on the described transmission shaft, two bearings are limited in the top bar hole shoulder in hole of cylinder block respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201250283U CN201090253Y (en) | 2007-08-23 | 2007-08-23 | Distribution transmission mechanism of motorcycle engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201250283U CN201090253Y (en) | 2007-08-23 | 2007-08-23 | Distribution transmission mechanism of motorcycle engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201090253Y true CN201090253Y (en) | 2008-07-23 |
Family
ID=39862013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201250283U Expired - Fee Related CN201090253Y (en) | 2007-08-23 | 2007-08-23 | Distribution transmission mechanism of motorcycle engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201090253Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674517A (en) * | 2013-11-18 | 2014-03-26 | 武汉船用机械有限责任公司 | Box-type oil distribution device rotation test device |
| CN106640249A (en) * | 2016-11-17 | 2017-05-10 | 河南柴油机重工有限责任公司 | Engine camshaft duplex bevel gear transmission device |
-
2007
- 2007-08-23 CN CNU2007201250283U patent/CN201090253Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674517A (en) * | 2013-11-18 | 2014-03-26 | 武汉船用机械有限责任公司 | Box-type oil distribution device rotation test device |
| CN103674517B (en) * | 2013-11-18 | 2016-08-17 | 武汉船用机械有限责任公司 | A kind of rotation test device of box oil distributor |
| CN106640249A (en) * | 2016-11-17 | 2017-05-10 | 河南柴油机重工有限责任公司 | Engine camshaft duplex bevel gear transmission device |
| CN106640249B (en) * | 2016-11-17 | 2019-06-07 | 河南柴油机重工有限责任公司 | A kind of engine cam duplex helical gear transmission device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2212935C (en) | Reciprocating piston type internal combustion engine with variable compression ratio | |
| CN106837460B (en) | Continuously variable valve timing device of internal combustion engine | |
| CN109664178B (en) | Polishing mechanism with variable transmission ratio and eccentric value changed through eccentric adjusting block | |
| CN201090253Y (en) | Distribution transmission mechanism of motorcycle engine | |
| CN102562283A (en) | Internal combustion engine with double rotor pistons | |
| CN101435363A (en) | Internal wave type non-crankshaft internal combustion engine | |
| CN104895671B (en) | Arc puts cam piston internal combustion engine | |
| CN101387208A (en) | Push cam type internal combustion engine without side pressure | |
| CN102828825A (en) | Symmetrical biphase cam swing type internal combustion engine with high rotating speed | |
| CN202370669U (en) | Variable compression ratio mechanism of engine | |
| CN202326905U (en) | Integrated flexible flywheel | |
| CN105888836A (en) | Automobile engine | |
| CN201041121Y (en) | Scroll spring single cylinder diesel engine starter | |
| CN205978289U (en) | Horizontal diesel engine transmitting gear train of single cylinder | |
| CN202628274U (en) | Integrated type ring-shaped curved slideway engine | |
| CN202579882U (en) | External gear mechanism of motorcycle engine balance shaft | |
| CN102192008B (en) | Gear-driven internal combustion engine | |
| CN201269138Y (en) | Car engine | |
| CN201065775Y (en) | Four-stroke single cylinder chain jogger optimized combination motorcycle gasoline engine | |
| CN102943699B (en) | Cam rocker arm mechanism for internal combustion engine | |
| CN202040300U (en) | Timing idle gear | |
| CN202250532U (en) | Integral type adjusting gear rack for adjusting oil mass of oil injection pump of single cylinder diesel | |
| CN104895637A (en) | Continuously variable valve timing mechanism adopting conical gears | |
| CN202510229U (en) | Engine with changeable compression ratio | |
| CN100436779C (en) | Piston zero side pressure technology and apparatus of high efficient internal-combustion engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080723 Termination date: 20120823 |