CN201301923Y - Damping and noise-reducing mechanism of engine - Google Patents
Damping and noise-reducing mechanism of engine Download PDFInfo
- Publication number
- CN201301923Y CN201301923Y CNU200820176767XU CN200820176767U CN201301923Y CN 201301923 Y CN201301923 Y CN 201301923Y CN U200820176767X U CNU200820176767X U CN U200820176767XU CN 200820176767 U CN200820176767 U CN 200820176767U CN 201301923 Y CN201301923 Y CN 201301923Y
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- CN
- China
- Prior art keywords
- gear
- main shaft
- bent axle
- crankcase
- damping
- 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 - Lifetime
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Abstract
The utility model relates to a damping and noise-reducing mechanism of an engine. The engine at least comprises a crankcase, a crankshaft and a main shaft; the crankcase and the main shaft are respectively provided with gears which are meshed mutually, so as to output the power of the crankshaft, wherein the gear on the crankshaft is a shearing type gear, while the gear on the main shaft is a damping gear; the shearing type gear and the damping gear are meshed at the outside of the crankshaft; when the crankshaft transmits power to the damping gear, an elastic element of the damping gear can be used for damping the impact power when the crankshaft is meshed with the main shaft and transmitting the power to the main shaft by a central block; and the shearing type gear on the crankshaft can utilizes the elastic element to lead a main gear and a secondary gear to generate dislocation so as to fill the tooth back gap when the shearing type gear is meshed with the damping gear, thus achieving the effect of eliminating abnormal sound generated by the tooth back gap when the gears are meshed.
Description
[technical field]
The utility model is about a kind of engine damping and noise reduction sound mechanism, particularly about a kind of structure that produces different sound when reducing engine crankshaft and main shaft start.
[background technique]
With regard to the structure of engine 1, see also Fig. 1, it is to establish a transmission case 2 at the side of engine 1, establish within the transmission case 2 with belt speed change mechanism 3, behind the oil gas input engine 1 of blend gasoline and air, promptly make oil gas fire by ignition mechanism 11 igniting, and it is reciprocating to promote piston 12, and the bent axle 13 of drive and its binding, 13 on bent axle stretches into transmission case 2 inside with axle 14 and links with belt speed change mechanism 3, and driving the rotation of trailing wheels through belt speed change mechanism 3, trailing wheel drives front-wheel again and rotates synchronously, to reach the purpose of advancing.
Please cooperate Fig. 2 to consult simultaneously, piston 12 is to link with connecting rod 15 and bent axle 13, when powered that piston 12 is fired by oil gas, it is a to-and-fro motion, become the circular movement of bent axle 13 for the to-and-fro motion that makes piston 12, therefore connecting rod 15 and bent axle 13 are utilized the design of balancing weight 16, and be the binding of an eccentric, when powered that piston 12 is fired by oil gas, the thrust of piston 12 can be pushed the balancing weight 16 of bent axle 13 by connecting rod 15 to, and can make bent axle 13 produce circular movement, but the strength when firing can make the balancing weight 16 of bent axle 13 produce a discontinuous impact force, and then cause bent axle 13 when start, can produce vibrations, therefore 4 on main shaft with bent axle 13 interlocks is provided with a damper gear 41 and bent axle 13 bindings, and utilize driving gear 17 on the bent axle 13, come to be meshing with each other with the damper gear of being located on the main shaft 4 41, drive damper gear 41 on the main shaft 4 by the driving gear on the bent axle 13 17, and then make main shaft 4 and bent axle 13 do synchronous rotation, whereby, the balancing weight 16 that can effectively offset bent axle 13 is because of the disappearance of the vibrations that fire impact force and produce.
But gear is when gear motion as everyone knows, because the existence of gear permissible tolerance when manufacturing, so two gears are to be in the state of engagement fully, but can have some back of tooth cracks (Gear Backlash), therefore when the damper gear 41 of the driving gear on the bent axle 13 17 on drive main shaft 4, two gears are again with the rotation that is meshing with each other at a high speed, thereby have the generation of different sound even noise and the destruction of gear surface.
Because existing engine 1 is when running, have and to eliminate gear engagement produces the different sound of running because of the gear back clearance disappearance, so, to how to develop and to make gear engagement more precisely and the engine structure that produces different sound when reducing engagement, the real problem of demanding urgently overcoming for present motorcycle manufacturer.
[model utility content]
In order to overcome the defective that above-mentioned prior art exists, the utility model provides a kind of engine damping and noise reduction sound mechanism.
Major technique means of the present utility model are to provide a kind of engine damping and noise reduction sound mechanism, this engine includes a crankcase at least, one bent axle and a main shaft, this crankcase includes left crankcase at least, right crankcase, be provided with bent axle and main shaft in this crankcase, being respectively equipped with gear on this bent axle and the main shaft intermeshes, the power of bent axle can be exported whereby, wherein, gear on this bent axle is a scissor gears, and the gear on the main shaft is a damper gear, and this scissor gears and damper gear are to mesh in right crankcase cover, this scissor gears includes a master gear, one pinion, one catch, several elastic elements and a C type clasp, this master gear are provided with several containing grooves and come for the setting of elasticity element; This damper gear then includes a central block, one driven gear, several elastic elements, one catch and a binding member, when crankshaft to damper gear, power is imported by driven gear, impact strength during by the elastic element available buffer bent axle of damper gear and main shaft engagement, see through again central block with transmission of power to main shaft, scissor gears on the bent axle then can make the offsetting of master gear and pinion generation angle by this elastic element, back of tooth crack in the time of can filling up the engagement of scissor gears and damper gear whereby, and then reach the elimination gear engagement produces the different sound of running because of back of tooth crack effect.
Of the present utility model time a technological means is to provide a kind of engine damping and noise reduction sound mechanism, this engine includes a crankcase at least, one bent axle and a main shaft, this crankcase includes left crankcase at least, right crankcase, be provided with bent axle and main shaft in this crankcase, being respectively equipped with gear on this bent axle and the main shaft intermeshes, the power of bent axle can be exported whereby, wherein, gear on this bent axle is a damper gear, and the gear on the main shaft is a scissor gears, the offsetting that scissor gears on this main shaft can make master gear and pinion produce angle by this elastic element, back clearance in the time of can filling up the engagement of scissor gears and damper gear whereby, and then reach the elimination gear engagement produces the different sound of running because of the gear back clearance effect.
A technological means more of the present utility model is to provide a kind of engine damping and noise reduction sound mechanism, this engine includes a crankcase at least, one bent axle and a main shaft, this crankcase includes left crankcase at least, right crankcase, be provided with bent axle and main shaft in this crankcase, being respectively equipped with gear on this bent axle and the main shaft intermeshes, the power of bent axle can be exported whereby, wherein, gear on this bent axle is a scissor gears, and the gear on the main shaft is a damper gear, this scissor gears includes a master gear, one pinion, one catch, several elastic elements and a C type clasp, this master gear are provided with several containing grooves and come for the setting of elasticity element; This damper gear then includes a central block, one driven gear, one catch and several elastic elements, when crankshaft to damper gear, power is imported by driven gear, impact strength during by the elastic element available buffer bent axle of damper gear and main shaft engagement, see through again central block with transmission of power to main shaft, and the offsetting that the scissor gears on this bent axle can make master gear and pinion produce angle by this elastic element, can fill up scissor gears and the damper gear back of tooth crack in when engagement whereby, and then reach the effect of the different sound that produces because of back of tooth crack when eliminating gear engagement.
[description of drawings]
Fig. 1 is the cross-sectional schematic of existing engine.
Fig. 2 is the schematic perspective view of existing bent axle and main shaft.
Fig. 3 is the generalized section of the utility model crankcase.
Fig. 4 is the schematic perspective view of the utility model bent axle and main shaft.
Fig. 5 is the three-dimensional exploded view of the utility model scissor gears.
Fig. 6 is the three-dimensional exploded view of the utility model damper gear.
Fig. 7 is the combination schematic representation of the utility model scissor gears.
Fig. 8 is another embodiment's schematic representation of the utility model bent axle and main shaft.
Fig. 9 is another embodiment's of the utility model damper gear a three-dimensional exploded view.
Figure 10 is another embodiment of the utility model damper gear and the schematic representation that combines of scissor gears.
1 engine, 11 ignition mechanisms, 12 pistons
14 on 13 bent axles
15 connecting rods, 16 balancing weights
17 driving gears
2 transmission cases
3 belt speed change mechanisms
4 main shafts, 41 damper gears
5 engines
6 crankcases, 61 left crankcases, 62 right crankcases
63 right crankcase covers
7 bent axles, 71 balancing weights, 72 scissor gears
721 master gears, 7211 containing grooves
7212 sleeve parts, 7213 teeth groove
7214 annular grooves, 722 pinions
7222 perforation of 7221 trepannings
723 catch, 7231 through holes
724 elastic element 725C type clasps
8 main shafts, 81 damper gears, 811 central blocks
8111 flanged housings, 8112 teeth groove
8113 annular grooves
812 driven gears, 812 ' driving gear
8121 trepanning seats, 8122 containing grooves
813 elastic elements, 814 catch
8141 through holes, 8142 slotted eyes
8143 stoppers, 815 binding members, 9 damper gears
91 central blocks, 911 flanged housings
912 teeth groove, 913 projections
92 driven gears, 921 trepanning seats
922 penetration holes, 93 catch
931 through holes, 932 fixed holes
94 elastic elements
[embodiment]
Be the effect that enables to be easier to understand structure of the present utility model and can reach, cooperate graphic explanation as the back now:
At first, see also shown in Fig. 3,4, engine 5 of the present utility model includes a crankcase 6, a bent axle 7 and a main shaft 8 at least.
Crankcase 6 has a left crankcase 61, a right crankcase 62 at least, can cover in right crankcase 62 in addition and establish a right crankcase cover 63, is provided with a bent axle 7 and a main shaft 8 in this crankcase 6.
Bent axle 7, two sides are provided with the design of balancing weight 71, this balancing weight 71 is to link with eccentric mode and bent axle 7, when powered that piston (not drawing among the figure) is fired by oil gas, the thrust of piston can be pushed the balancing weight 71 of bent axle 7 by connecting rod to, and can make bent axle 7 produce circular movement, this bent axle 7 is provided with a scissor gears 72 in a side, this scissor gears 72 sees also shown in Figure 5, include a master gear 721, one pinion 722, one catch 723, several elastic elements 724 and a C type clasp 725, this master gear 721 is provided with several containing grooves 7211 and comes to be provided with for elasticity element 724, this elastic element 724 is a pressure spring, convex with the sleeve part 7212 of a ring-type in the central authorities of master gear 721, the inner circumference edge of this sleeve part 7212 is covered with teeth groove 7213, and the outer periphery of sleeve part 7212 then are provided with annular groove 7,214 one; The number of teeth of this pinion 722 is corresponding with master gear 721, be provided with trepanning 7221 in the centre of pinion 722, this trepanning 7221 is corresponding with the sleeve part 7212 of master gear 721, and it is corresponding with the containing groove 7211 of master gear 721 that other pinion 722 is provided with several perforation 7222; This catch 723 is the plate body of a ring-type, and the central authorities of this catch 723 are provided with a through hole 7231, and this through hole 7231 is corresponding with the sleeve part 7212 of master gear 721, and this C type clasp 725 can be buckled on the annular groove 7214 of being located at sleeve part 7212.
The utility model is when implementing, as 3, shown in 4, it is a side that scissor gears 72 and damper gear 81 is arranged at bent axle 7 and main shaft 8 respectively, and this scissor gears 72 and damper gear 81 are to intermesh in the left crankcase 61 or right crankcase 62 outsides, be with the expression of in the right crankcase cover 63 in right crankcase 62 outsides, intermeshing of this scissor gears 72 and damper gear 81 among Fig. 3, please consult Fig. 5 again, shown in 7, after scissor gears 72 combinations, this pinion 722 is into the combination of sliding prescription formula with master gear 721, pinion 722 is able to rotate on sleeve part 7212 whereby, can make the offsetting of pinion 722 generations one angle this moment by the elasticity of this elastic element 724, by said mechanism, can make two sides of pinion 722 be respectively master gear 721 stops with C type clasp 725, and the disappearance that does not have axial disengaging takes place, and pinion 722 can be by the effect of elastic element 724, can keep an angular deflection amount with master gear 721, reduce back of tooth crack whereby, in addition when bent axle 7 is driving main shaft 8 and is rotating, the pinion 722 of this scissor gears 72 can be done low-angle rotating freely earlier on bent axle 7, when the master gear on the bent axle 7 721 drives the driven gear 812 of damper gear 81, pinion 722 on this bent axle 7 can contact with driven gear 812 earlier, and pinion 722 is by the effect of elastic element 724, and can be driven and rotation one small angle on bent axle 7, behind pinion 722 rotations one small angle, can just align with master gear 721, scissor gears 72 on the bent axle 7 just can drive damper gear 81 rotations at this moment, and work as bent axle 7 transferring power to damper gear 81, power is imported by driven gear 812, by the elastic element 813 available buffer bent axles 7 of the damper gear 81 impact strength during with main shaft 8 engagements, see through central block 811 again transmission of power to main shaft 8 and then drive main shaft 8 done synchronous rotation, back of tooth crack in the time of not only can effectively filling up scissor gears 72 and damper gear 81 engagements whereby, and then reach and eliminate gear engagement produces the different sound of running because of back of tooth crack effect, also can avoid power to export when transmitting the destruction of the gear surface that causes suddenly; And, more can be convenient to the maintenance of this scissor gears 72 and damper gear 81 by being to intermesh in the left crankcase 61 or right crankcase 62 outsides with this scissor gears 72 and damper gear 81.
See also shown in Figure 8 again, the utility model is when implementing, it is a side that damper gear 81 can be arranged at bent axle 7, and scissor gears 72 is arranged at a side of main shaft 8, and the two is meshed, this moment, the driven gear 812 of damper gear 81 promptly converted a driving gear 812 ' to, and bent axle 7 can be meshed by driving gear 812 ' scissor gears 72 next and on the main shaft 8, and then can drive main shaft 8 and do synchronous rotation, when the driving gear 812 ' on the bent axle 7 is driving scissor gears 72 on the main shaft 8, driving gear 812 ' on this bent axle 7 can contact with pinion 722 earlier, pinion 722 is by the effect of elastic element 724, and can be driven and rotation one small angle on main shaft 8, behind pinion 722 rotations one small angle, can just align with master gear 721, the driving gear 812 ' on the bent axle 7 just can be with the master at this moment, pinion 721,722 driven rotary together, and then drive main shaft 8 and do synchronous rotation, can effectively solve the noise problem between two gears equally.
See also Fig. 9 again, shown in 10, another embodiment for the utility model damper gear 81, this damper gear 9, include a central block 91, one driven gear 92, one catch 93 and several elastic elements 94, the central authorities of this central block 91 are provided with a flanged housing 911, the inner circumference edge of this flanged housing 911 is covered with teeth groove 912, around flanged housing 911, be provided with several projections 913, this projection 913 can give sheathed for elasticity element 94, wherein this elastic element 94 can be implemented by the flexible rubber of tool, the central authorities of this driven gear 92 are provided with a trepanning seat 921, this trepanning seat 921 can give flanged housing 911 sheathed, around trepanning seat 921, be provided with several and central block 91 projections 913 corresponding penetration holes 922, this penetration hole 922 can give ccontaining for elasticity element 94, this catch 93 is the plate body of a ring-type, the central authorities of this catch 93 are provided with a through hole 931, can make catch 93 smooth by this through hole 931 in the surface of driven gear 92, this catch 93 is provided with several fixed holes 932 in addition, this fixed hole 932 can wear for binding member 815, and central block 91 combined with driven gear 92, whereby, when power exports the driven gear 92 of damper gear 9 to by the scissor gears 72 of bent axle 7, cushioning effect by elastic element 94, after impact strength during 72 engagements of available buffer scissor gears, see through again central block 91 with transmission of power to main shaft 8, whereby, can effectively avoid causing the gear surface wearing and tearing, and reach the effect of eliminating back of tooth crack and the different sound of running.
In sum, the utility model has really reached the purpose and the effect of institute's demand by said mechanism, should meet novelty, the important document of progressive and practicability.
Claims (8)
1. engine damping and noise reduction sound mechanism, this engine includes a crankcase, a bent axle and a main shaft at least, this crankcase has a left crankcase, a right crankcase at least, be provided with bent axle and main shaft in this crankcase, being respectively equipped with gear on this bent axle and the main shaft intermeshes, whereby the power of bent axle is exported, be it is characterized in that: the gear on this bent axle is a scissor gears, and the gear on the main shaft is a damper gear.
2. engine damping and noise reduction sound mechanism, this engine includes a crankcase, a bent axle and a main shaft at least, this crankcase has a left crankcase, a right crankcase at least, be provided with bent axle and main shaft in this crankcase, being respectively equipped with gear on this bent axle and the main shaft intermeshes, whereby the power of bent axle is exported, be it is characterized in that: the gear on this bent axle is a damper gear, and the gear on the main shaft is a scissor gears.
3. engine damping as claimed in claim 1 or 2 and noise reduction sound mechanism is characterized in that: this scissor gears and damper gear are in the right side or the engagement of the left crankcase outside.
4. engine damping as claimed in claim 1 or 2 and noise reduction sound mechanism is characterized in that: this scissor gears is to include a master gear, a pinion, a catch, several elastic elements and a C type clasp.
5. engine damping as claimed in claim 1 or 2 and noise reduction sound mechanism is characterized in that: this damper gear is to include a central block, a driven gear, several elastic elements, a catch and a binding member.
6. engine damping as claimed in claim 5 and noise reduction sound mechanism is characterized in that: this elastic element is a spring.
7. engine damping as claimed in claim 5 and noise reduction sound mechanism is characterized in that: this elastic element is a rubber.
8. engine damping as claimed in claim 5 and noise reduction sound mechanism is characterized in that: this binding member is C type clasp or rivet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820176767XU CN201301923Y (en) | 2008-12-04 | 2008-12-04 | Damping and noise-reducing mechanism of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820176767XU CN201301923Y (en) | 2008-12-04 | 2008-12-04 | Damping and noise-reducing mechanism of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201301923Y true CN201301923Y (en) | 2009-09-02 |
Family
ID=41085549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820176767XU Expired - Lifetime CN201301923Y (en) | 2008-12-04 | 2008-12-04 | Damping and noise-reducing mechanism of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201301923Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI467086B (en) * | 2012-08-22 | 2015-01-01 | Kwang Yang Motor Co | A gear mechanism for the balance shaft of the engine |
-
2008
- 2008-12-04 CN CNU200820176767XU patent/CN201301923Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI467086B (en) * | 2012-08-22 | 2015-01-01 | Kwang Yang Motor Co | A gear mechanism for the balance shaft of the engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090902 |