CN2777281Y - Shock reducing mechanism for engine of motorcycle - Google Patents
Shock reducing mechanism for engine of motorcycle Download PDFInfo
- Publication number
- CN2777281Y CN2777281Y CN 200520056434 CN200520056434U CN2777281Y CN 2777281 Y CN2777281 Y CN 2777281Y CN 200520056434 CN200520056434 CN 200520056434 CN 200520056434 U CN200520056434 U CN 200520056434U CN 2777281 Y CN2777281 Y CN 2777281Y
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- CN
- China
- Prior art keywords
- trunnion shaft
- straddle type
- engine
- motorcycle
- bent axle
- 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
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- Vibration Prevention Devices (AREA)
Abstract
The utility model relates to a shock reducing mechanism for engines of straddle type motorcycles, which solves the technical problem of reducing the upward and downward vibration of the engine along the centerline direction of an air cylinder when the straddle type motorcycles run. Therefore, a balance shaft is arranged between a left and a right crankshaft box bodies of the engine, and is provided with a notch, wherein the opposite part of the notch is provided with a sector-shaped balance block. A driving gear arranged at the right end of a crankshaft is engaged with a driven gear arranged on the balance shaft. The utility model is mainly suitable for motorcycle engines which adopt a vertical type installation structural form.
Description
Technical field
The utility model relates to the straddle type motorcycle technical field, the engine vibration damping device that especially a kind of straddle type motorcycle is used.
Background technique
The motor used of the various straddle type motorcycles of Chu Xianing mostly is single-cylinder engine in the market, adopt vertical mounting structure, the single order reciprocal inertia force that its motor produces in operation process is very big, and most of motors do not take measures the single order reciprocal inertia force is carried out balance.This single order reciprocal inertia force can be decomposed into along cylinder centerline with perpendicular to two component of cylinder centerline.Component along cylinder centerline can produce up-down vibration to the straddle type motorcycle in travelling, and can produce horizontal vibration perpendicular to the component of cylinder centerline to the straddle type motorcycle in travelling.Because horizontal vibration is little to motorcycle driving influence, be the up-down vibration that produces along the cylinder centerline direction to driver's main influence.
Obviously, do not take measures the single order reciprocal inertia force the is carried out single cylinder straddle type motorcycle motor of balance, the single order reciprocal inertia force that its motor piston and connecting rod small end in (rated engine speed of most of motors is all between 8000-10000r/min) operation process at a high speed produce is very large, it is very big that this can make motorcycle vibrate in driving, the driver is uncomfortable, causes fatigue easily and causes the generation of traffic safety accident.Also can shorten simultaneously the working life of motorcycle, increase motorcycle and breakdown in the motor incidence rate thereof.
Summary of the invention
The technical problems to be solved in the utility model is the up-down vibration that motor produces along the cylinder centerline direction when reducing straddle type motorcycle and travelling.
The technical solution that the utility model proposed is such: the engine vibration damping device that a kind of straddle type motorcycle is used, wherein contain bent axle 2, piston 9, connecting rod 10, left and right crankcases 5,6, constitute connecting rod, between described left and right crankcases 5,6, be movably installed with a trunnion shaft 1, described trunnion shaft 1 is provided with breach, and is provided with fan-shaped equilibrium block on this breach opposite; Being installed in the actuation gear 3 of bent axle 2 right-hand members is meshed with driven gear 4 on being installed in trunnion shaft 1.Described fan-shaped equilibrium block angular range is 100-180 °.The running orbit of the fan-shaped equilibrium block of described trunnion shaft 1 is in the space between the left and right crank of bent axle 2.
The engine vibration damping device that the utility model straddle type motorcycle is used is the trunnion shaft driving mechanism that is movably installed with a trunnion shaft 1 and is made up of actuation gear 3 and driven gear 4 between left and right crankcases 5,6, its rotating speed is identical with bent axle 2 rotating speeds, turns to then opposite.The rotating inertia force that is produced by trunnion shaft 1 running is in a basic balance to fall single order reciprocal inertia force that piston 9 and connecting rod 10 microcephaly's to-and-fro motion the are produced component along the cylinder centerline direction, thereby reduces the up-down vibration of motorcycle.
Described trunnion shaft 1 is for the useful space that makes full use of left and right crankcases 5,6 inside and make trunnion shaft 1 balance the single order reciprocal inertia force that piston 9 and connecting rod 10 microcephalies are produced as wide as possible in engine operation process and the size of trunnion shaft 1 is as far as possible little again, thereby on trunnion shaft 1, be provided with fan-shaped equilibrium block, and this sector unit angle gets 180 ° of maximum values, and takes down part weight on the trunnion shaft 1 on fan-shaped equilibrium block opposite.The fan-shaped equilibrium block of trunnion shaft 1 can rotate in the space between the left and right crank of bent axle 2, can't interfere with the major part of connecting rod 10.
Driven gear 4 in the described trunnion shaft driving mechanism adopts the composite material manufacturing, and wherein gear engagement partly is nonmetallic material, to reduce the noise that gear transmission produces.
Compared with prior art, the utlity model has following beneficial effect:
(1) because trunnion shaft 1 and driving mechanism thereof have been installed in motor, the single order reciprocal inertia force that can make this motor obtains in a basic balance along the component of cylinder centerline direction, reduce straddle type motorcycle up-down vibration in the process of moving thereby reach, make the driver increase comfortable feel in the process of moving, reduce driver's fatigue strength, and then the incidence rate of reduction motorcycle traffic safety accident, the endurance quality that prolongs motorcycle reduces motorcycle and breakdown in the motor rate.
(2) because the compact Layout design in left and right crankcases 5,6 of bent axle 2, trunnion shaft 1 and driving mechanism thereof reduces the manufacture cost of this trunnion shaft motor greatly.Just on the basis of existing straddle type motorcycle engine product, only need to increase trunnion shaft 1 and driving mechanism thereof, bent axle 2, left and right crankcases 5,6 are done change slightly get final product, and other parts need not to do any change.
(3) because the driven gear 4 of trunnion shaft driving mechanism adopts the structural design of nonmetallic material can effectively reduce the gear transmission noise.
The utility model mainly is applicable to the motorcycle engine that adopts vertical mounting structure form.
Description of drawings
Fig. 1 is the vibration damping motor plan view that the utility model has trunnion shaft.
Fig. 2 is the partial view of vibration damping balance shaft of engine shown in Figure 1 and drive unit thereof.
Fig. 3 is an A-A sectional view shown in Figure 2.
Wherein:
1, trunnion shaft; 2, bent axle; 3, trunnion shaft actuation gear; 4, trunnion shaft driven gear; 5, left crankcase; 6, right crankcase; 7, bearing; 8, woodruff key; 9, piston; 10, connecting rod.
Embodiment
By following embodiment the utility model is further elaborated.
With reference to Fig. 1, Fig. 2, shown in Figure 3, the disclosed trunnion shaft engine vibration damping device of embodiment of the utility model includes trunnion shaft 1, bent axle 2, trunnion shaft actuation gear 3, trunnion shaft driven gear 4, left crankcase 5, right crankcase 6, rolling bearing 7, woodruff key 8.
A trunnion shaft 1 that has fan-shaped equilibrium block has been installed between left and right crankcases 5,6, and on the trunnion shaft 1 on this sector unit opposite cutouts weight, the driving of this trunnion shaft 1 is to drive trunnion shaft driven gear 4 rotations that are installed on the trunnion shaft 1 by the trunnion shaft actuation gear on the right crank that is fitted in bent axle 23, fan-shaped equilibrium block on the trunnion shaft 1 can balance single order reciprocal inertia force that motor produces the in the running component along cylinder centerline effectively, its gear ratio is 1: 1, turns to and bent axle 2 direction of rotation.Promptly the fan-shaped equilibrium block when microcephaly's trunnion shaft 1 when piston 9 top dead centers move of piston 9 and connecting rod 10 is rotated down, when the fan-shaped equilibrium block of microcephaly's trunnion shaft 1 when piston 9 lower dead center are moved of piston 9 and connecting rod 10 rotates up, the rotating inertia force that produced of trunnion shaft 1 is along the component of the cylinder centerline component that falls the single order reciprocal inertia force that the microcephaly produced of piston 9 and connecting rod 10 along the cylinder centerline direction in a basic balance like this, thereby reaches the purpose that reduces the motor up-down vibration.
Trunnion shaft driven gear 4 is connected by woodruff key 8 with trunnion shaft 1, and its connection is reliability and durability.Be connected with two rolling bearings 7 between trunnion shaft 1 and the left and right crankcases 5,6, the bearing 7 on the right crankcase 6 adopts the pressure splash lubrications, and the bearing 7 of left crankcase 5 adopts splash lubrications.
Trunnion shaft driven gear 4 is injection molded into blank by nonmetallic material and metallic material and then processes with the gear manufacturing equipment, can effectively reduce the gear transmission noise.
The fan-shaped equilibrium block of trunnion shaft 1 can rotate in the space between the left and right crank of bent axle 2, makes the overall construction design of motor very compact.
Bent axle 2 is because trunnion shaft actuation gear 3 has been installed in increase, so crank right part size need extend, left and right crankcases 5,6 is owing to increased the mounting point of trunnion shaft 1, its blank needs die sinking again, but other hole is the coordinate size constancy, only axial dimension is changed slightly, need not increase any process equipment.
Claims (3)
1, the engine vibration damping device used of a kind of straddle type motorcycle, wherein contain bent axle (2), piston (9), connecting rod (10), left and right crankcases (5,6), constitute connecting rod, it is characterized in that: between described left and right crankcases (5,6), be movably installed with a trunnion shaft (1), described trunnion shaft (1) is provided with breach, and is provided with fan-shaped equilibrium block on this breach opposite; Being installed in the actuation gear (3) of bent axle (2) right-hand member is meshed with driven gear (4) on being installed in trunnion shaft (1).
2, the engine vibration damping device used of straddle type motorcycle according to claim 1, it is characterized in that: described fan-shaped equilibrium block angular range is 100-180 °.
3, the engine vibration damping device used of straddle type motorcycle according to claim 1 is characterized in that: the running orbit of the fan-shaped equilibrium block of described trunnion shaft (1) is in the space between the left and right crank of bent axle (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520056434 CN2777281Y (en) | 2005-03-30 | 2005-03-30 | Shock reducing mechanism for engine of motorcycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520056434 CN2777281Y (en) | 2005-03-30 | 2005-03-30 | Shock reducing mechanism for engine of motorcycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2777281Y true CN2777281Y (en) | 2006-05-03 |
Family
ID=36744666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520056434 Expired - Fee Related CN2777281Y (en) | 2005-03-30 | 2005-03-30 | Shock reducing mechanism for engine of motorcycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2777281Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100564935C (en) * | 2007-04-28 | 2009-12-02 | 力帆实业(集团)股份有限公司 | A kind of engine balance mechanism for motorcycle |
| CN102384216A (en) * | 2010-09-06 | 2012-03-21 | 川崎重工业株式会社 | Balancer shaft of engine |
| CN103883424A (en) * | 2014-03-26 | 2014-06-25 | 江门天钇金属工业有限公司 | Motorcycle engine |
-
2005
- 2005-03-30 CN CN 200520056434 patent/CN2777281Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100564935C (en) * | 2007-04-28 | 2009-12-02 | 力帆实业(集团)股份有限公司 | A kind of engine balance mechanism for motorcycle |
| CN102384216A (en) * | 2010-09-06 | 2012-03-21 | 川崎重工业株式会社 | Balancer shaft of engine |
| CN102384216B (en) * | 2010-09-06 | 2014-04-30 | 川崎重工业株式会社 | Balancer shaft of engine |
| CN103883424A (en) * | 2014-03-26 | 2014-06-25 | 江门天钇金属工业有限公司 | Motorcycle engine |
| CN103883424B (en) * | 2014-03-26 | 2017-01-18 | 江门天钇金属工业有限公司 | Motorcycle engine |
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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: 20060503 Termination date: 20120330 |