CN101038025A - Noise preventing device of balance gear of crank - Google Patents
Noise preventing device of balance gear of crank Download PDFInfo
- Publication number
- CN101038025A CN101038025A CN 200610071814 CN200610071814A CN101038025A CN 101038025 A CN101038025 A CN 101038025A CN 200610071814 CN200610071814 CN 200610071814 CN 200610071814 A CN200610071814 A CN 200610071814A CN 101038025 A CN101038025 A CN 101038025A
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- pinion
- gear
- master gear
- hole
- engine crankshaft
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Abstract
The invention relates to a balancing gear noise preventing device of a engine crankshaft, the balancing gear includes a master gear, an auxiliary gear and a torsion spring, which is nested on a balancing shaft, characterized in that the torsion spring is provided between the master gear and the auxiliary gear, the master gear is provided at least a flange seat and a fixing hole, the auxiliary gear is provided at least one through hole, which is fitly nested in the flange seat, thus, the auxiliary gear can be rotating on the flange seat of the master gear. A limitation column is provided inside the through hole of the auxiliary gear, lower part of the limitation column is fixed in the fixing hole of the master gear, offset of the auxiliary gear is limited with a gap kept by the upper part of the limitation column and the through hole of the auxiliary gear. By employing said mechanism, components of the balancing gear noise preventing device can be reduced, and the assemblage is simplified.
Description
[technical field]
The present invention has to prevent the noise device in a kind of balance gear of engine crankshaft.
[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.
Inferior see also shown in Figure 2, 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 so mode can make the balancing weight 16 of bent axle 13 produce inertial force, and then cause bent axle 13 when start, can produce vibrations, therefore in order to allow the running of bent axle 13 can be a state stably, set up a trunnion shaft 4, the binding of this trunnion shaft 4 and bent axle 13, it mainly is the driving gear 17 that utilizes on the bent axle 13, come to be meshing with each other with the balance gear of being located on the trunnion shaft 4 (driven gear) 41, drive balance gear 41 on the trunnion shaft 4 by the driving gear on the bent axle 13 17, and then make trunnion shaft 4 and bent axle 13 do synchronous rotation, by this, the disappearance of the vibrations that the balancing weight 16 that can effectively offset bent axle 13 is produced because of coherence power.
But, as everyone knows gear when gear motion, because the existence of gear permissible tolerance when manufacturing, be to be the states that can't be in fully engagement with two gears, but can have some back of tooth cracks (Gear back lash), therefore when the balance gear 41 of the driving gear on the bent axle 13 17 on drive trunnion 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.
Please cooperate and consult Fig. 3, commonly use the mode that solves the noise problem between two gears, be that the balance gear on the trunnion shaft 4 41 is divided into two, form a master gear 411 and a pinion 412, this master gear 41 other next-door neighbours' sheathed pinion 412, make pinion 412 be close to master gear 412 by a torque spring 42, one end of this torque spring 42 is plugged on the pinion 412, the other end of torque spring 42 then is plugged on the loop fasteners 43, this loop fasteners 43 is pressed together on the trunnion shaft 4 in the close-fitting mode, and mat one locating stud 44 is stopped again, effect by torque spring 42, make pinion 412 and master gear 411 keep certain side-play amount, use the back of tooth crack of offsetting driving gear 17 and master gear 411, and this pinion 412 can be done low-angle rotating freely on trunnion shaft 4, when the driving gear on the bent axle 13 17 is driving balance gear 41 on the trunnion shaft 4, driving gear 17 on this bent axle 13 can contact with pinion 412 earlier, pinion 412 is by the effect of torque spring 42, and can be driven and rotation one small angle on trunnion shaft 4, behind pinion 412 rotations one small angle, can just align with master gear 41, driving gear 17 on the bent axle 13 just can be with major-minor gear 411.412 driven rotary together at this moment, and then drive trunnion shaft 4 and do synchronous rotation, no doubt can effectively solve noise problem between two gears by said structure; Only, commonly use the mode that solves the noise problem between two gears as previously mentioned, its structure is obviously too complicated, can cause the inconvenient increase that, more can cause manufacture cost outward of assembling, especially this loop fasteners 43 is to put the mode combination with 4 one-tenth close-fittings of trunnion shaft, causes the difficulty in the manufacturing more.Be how providing a kind of more convenient and effectively eliminate the structure of the noise that is caused in back of tooth crack, real is a motorcycle dealer big problem extremely to be solved.
[summary of the invention]
Main purpose of the present invention, be to provide a kind of engine crankshaft balance gear prevent the noise device, can reduce the balance gear noise, can reduce the assembly that balance gear prevents the noise device, and make its easily assembledization.
Secondary objective of the present invention, be to provide a kind of engine crankshaft balance gear prevent the noise device, can limit the side-play amount of pinion, the use effect of promoting pinion by this.
The balance gear of a kind of engine crankshaft of the present invention prevent the noise device, this balance gear comprises a master gear, a pinion, a torque spring, and be set on the trunnion shaft, it is characterized in that: this master gear is provided with flanged housing, this pinion is set on this flanged housing rotationally, and this torque spring is to be located between master gear and the pinion.
The balance gear of a kind of engine crankshaft of the present invention prevent the noise device, this balance gear comprises a master gear, one pinion, one torque spring, and be set on the trunnion shaft, it is characterized in that: this torque spring is to be located between master gear and the pinion, this master gear is provided with a flanged housing and a fixed hole at least, this pinion has a perforating at least, this pinion is set on the flanged housing of this master gear rotationally, other has a restriction post to be arranged in the perforating of pinion, the hypomere portion of this restriction post also is installed on the fixed hole of master gear, the epimere portion of this restriction post and the perforating of pinion have the gap, can limit the side-play amount of pinion.
The balance gear of a kind of engine crankshaft of the present invention prevents the noise device, this balance gear comprises a master gear, one pinion, one torque spring, and be set on the trunnion shaft, it is characterized in that: this torque spring is to be located between master gear and the pinion, this master gear is provided with flanged housing at least, this flanged housing is provided with caulking groove, this pinion has a sheathed hole, this sheathed nose end edge is provided with limiting groove, this pinion is set on this flanged housing rotationally, other establishes on the caulking groove that a confinement block is arranged in the limiting groove of pinion and master gear, the internal diameter of this limiting groove is greater than the external diameter of confinement block, with the gap that limiting groove was kept of this confinement block and pinion, limit the side-play amount of pinion.
The balance gear of engine crankshaft of the present invention prevent the noise device, can reduce the balance gear noise, can reduce the assembly that balance gear prevents the noise device, and make its easily assembledization.
The balance gear of engine crankshaft of the present invention prevent the noise device, can limit the side-play amount of pinion, promote the use effect of pinion.
[description of drawings]
Fig. 1 is a cross-sectional schematic of commonly using engine.
Fig. 2 is a sectional view of commonly using bent axle and trunnion shaft.
Fig. 3 commonly uses the cross-sectional schematic that prevents the noise device.
Fig. 4 is the plan view of bent axle of the present invention and trunnion shaft.
Fig. 5 is the side view of bent axle of the present invention and trunnion shaft.
Fig. 6 is the exploded view of trunnion shaft of the present invention and balance gear.
Fig. 7 is the sectional view of trunnion shaft of the present invention and balance gear.
Fig. 8 is the schematic representation of another embodiment of the present invention.
[embodiment]
Effect for being easier to understand mechanism of the present invention and can reach cooperates graphic being described as follows now:
Its essential structure of engine of the present invention and function mode are all with known identical, so following relevant detailed description of the invention process will repeat no more with regard to relevant engine part, close first Chen Ming.
At first, see also shown in Fig. 4,5, bent axle 5 of the present invention links by connecting rod 51 and piston 52, the bottom of bent axle 5 has balancing weight 53, two sides at balancing weight 53 are arranged with bearing 54 respectively, be provided with a driving gear 55 between the balancing weight 53 of a side and the bearing 54 therein in addition, in addition in the other trunnion shaft 6 that is provided with of bent axle 5 parallel sides.
On this trunnion shaft 6 with the sheathed balance gear 7 of driving gear 55 respective side of bent axle 5, shown in Fig. 6,7, this balance gear 7 is to comprise a master gear 71, a pinion 72, a torque spring 73, and one the restriction post 74 constitute, the centre of this master gear 71 has sheathed hole 711, periphery in sheathed hole 711 convexes with flanged housing 712, is respectively equipped with fixed hole 713 and on the master gear 71 in addition and plugs hole 714; Be provided with sheathed hole 721 in the middle of this pinion 72, this pinion 72 has inserting hole 722 respectively and plugs hole 723, wherein the sheathed hole 721 of this pinion 72 is corresponding with the flanged housing 712 of master gear 71, in addition the inserting hole 722 of pinion 72 is corresponding with the fixed hole 713 of master gear 71, and pinion 72 plug hole 723 be with master gear 71 to plug hole 714 corresponding; This torque spring 73 in two terminations curved respectively be set as the ㄇ font plug 731.732, this plugs 731 and is inserted in plugging in the hole 723 on the pinion 72, another plugs 732 and is inserted in the plugging in the hole 714 of master gear 71, curvedly be set as the ㄇ font by plugging 731.732, can avoid coming off of torque spring 73; This restriction post 74 is to be the diameter of an epimere portion 741 Cylindrical object greater than hypomere portion 742, and the diameter of the epimere portion 741 of restriction post 74 is less than footpath within the perforating 722 of pinion 72, can maintain the gap with the perforating 722 of pinion 72 by this.
Enforcement of the present invention, please consult again as Fig. 6, shown in 7, earlier be set in pinion 72 on the flanged housing 712 of master gear 71 by sheathed hole 721, pinion 72 is into the combination of sliding prescription formula with master gear 71, pinion 72 is able to rotate on flanged housing 712 by this, this 731 is plugged in plugging in the hole 723 on the pinion 72 with plugging of torque spring 73 simultaneously, another plugs 732 and is plugged in the plugging in the hole 714 of master gear 71, to limit post 74 is again penetrated by the perforating 722 of pinion 72, and the underpart 742 that will limit post 74 is installed on the fixed hole of master gear 71 and locatees, can form balance gear 7 by this, then again with the sheathed hole 711 of balance gear 7 with master gear 71, be set on the trunnion shaft 6, this moment, balance gear 7 was to combine in the close-fitting mode with trunnion shaft 6, and can make the protruding seat 61 of pinion 72 next-door neighbour trunnion shafves 6, by this, bent axle 5 can be meshed with balance gear 7 by driving gear 54, and then can drive trunnion shaft 6 and do synchronous rotation.By said mechanism, 61 of the protruding seats that can make two sides of pinion 72 be respectively master gear 71 and trunnion shaft 6 stop, and the disappearance that does not have axial disengaging takes place, and pinion 72 can be by the effect of torque spring 73, can keep a side-play amount with master gear 71, reduce back of tooth crack by this, and the side-play amount of pinion 72 and master gear 71, except that being defined, more limited by crack between the perforating 722 of pinion 72 and the restriction post 74 by torque spring 73.
Other sees also shown in Figure 8, the present invention is when implementing, the skew quantitative limitation of moving for pinion 72, except that as the mode of above-mentioned restriction post 74, also can be by on the flanged housing 712 of master gear 71, caulking groove 715 being set, other is arranged with a limiting groove 724 in the ora terminalis in the sheathed hole 721 of pinion 72, be arranged between caulking groove 715 and the limiting groove 724 by a confinement block 74a again, 715 one-tenth nearly close-fittings of this confinement block 74a and caulking groove, and the external diameter of confinement block 74a is less than footpath within the limiting groove 724, make 724 of confinement block 74a and limiting grooves possess the gap, and this gap is the maximum offset of pinion 72, can forms the skew quantitative limitation to pinion 72 by this and also.
Effect of the present invention is, can make pinion 72 and master gear 71 maintain side-play amount by said mechanism, reduced back of tooth crack by this, and then prevent that driving gear 54 and balance gear 7 from producing noise, and can reduce the assembly that balance gear 7 prevents the noise device by said structure, and easily assembledization that can make it, more can what deserves to be mentioned is, the present invention comes pinion 72 is produced restriction by a restriction post 74 is set, avoid pinion 72 when contacting with driving gear 54 by excessive passing, and then can cause the damage of torque spring 73.
[main element symbol description]
1 engine, 11 igniters, 12 pistons
13 bent axles, 14 axles
15 connecting rods, 16 balancing weights
17 driving gears
2 transmission cases
3 belt speed change mechanisms
4 trunnion shafves, 41 balance gears, 411 master gears
412 pinions, 42 torque springs
43 loop fasteners, 44 locating studs
5 bent axles, 51 connecting rods, 52 pistons
53 balancing weights, 54 bearings
55 driving gears
6 trunnion shafves, 61 protruding seats
7 balance gears, 71 master gears, 711 sheathed holes
712 flanged housings, 713 fixed holes
714 plug hole 715 caulking grooves
72 pinions, 721 sheathed holes
722 perforatings 723 plug the hole
724 limiting grooves, 73 torque springs
731.732 plug head
74 restriction post 74a confinement blocks
742 hypomere portions of 741 epimere portions
Claims (14)
1. the balance gear of an engine crankshaft prevents the noise device, this balance gear comprises a master gear, a pinion, a torque spring, and be set on the trunnion shaft, it is characterized in that: this master gear is provided with flanged housing, this pinion is set on this flanged housing rotationally, and this torque spring is to be located between master gear and the pinion.
The balance gear of engine crankshaft as claimed in claim 1 prevent the noise device, it is characterized in that: this master gear is provided with and plugs the hole.
The balance gear of engine crankshaft as claimed in claim 2 prevent the noise device, it is characterized in that: this pinion is provided with and plugs the hole.
The balance gear of engine crankshaft as claimed in claim 3 prevent the noise device, it is characterized in that: what two of this torque spring plugged that head is plugged in this master gear respectively plugs the plugging on the hole of hole and pinion.
The balance gear of engine crankshaft as claimed in claim 1 prevent the noise device, it is characterized in that: two sides of this pinion are stopped by the protruding seat of master gear and trunnion shaft respectively.
The balance gear of engine crankshaft as claimed in claim 4 prevent the noise device, it is characterized in that: this torque spring to plug head be to be the ㄇ font.
7. the balance gear of an engine crankshaft prevents the noise device, this balance gear comprises a master gear, one pinion, one torque spring, and be set on the trunnion shaft, it is characterized in that: this torque spring is to be located between master gear and the pinion, this master gear is provided with a flanged housing and a fixed hole at least, this pinion has a perforating at least, this pinion is set on the flanged housing of this master gear rotationally, other has a restriction post to be arranged in the perforating of pinion, the hypomere portion of this restriction post also is installed on the fixed hole of master gear, and the epimere portion of this restriction post and the perforating of pinion have the gap.
The balance gear of engine crankshaft as claimed in claim 7 prevent the noise device, it is characterized in that: this master gear is provided with and plugs the hole.
The balance gear of engine crankshaft as claimed in claim 8 prevent the noise device, it is characterized in that: this pinion is provided with and plugs the hole.
The balance gear of engine crankshaft as claimed in claim 9 prevent the noise device, it is characterized in that: two of this torque spring plugs the plugging on the hole that hole and pinion establish that plug that head is plugged in master gear respectively.
11. the balance gear of engine crankshaft as claimed in claim 7 prevent the noise device, it is characterized in that: two sides of this pinion are stopped by the protruding seat of master gear and trunnion shaft respectively.
12. the balance gear of engine crankshaft as claimed in claim 7 prevent the noise device, it is characterized in that: this torque spring to plug head be to be the ㄇ font.
13. the balance gear of engine crankshaft as claimed in claim 7 prevent the noise device, it is characterized in that: the diameter of the epimere portion of this restriction post is greater than hypomere portion.
14. the balance gear of an engine crankshaft prevents the noise device, this balance gear comprises a master gear, one pinion, one torque spring, and be set on the trunnion shaft, it is characterized in that: this torque spring is to be located between master gear and the pinion, this master gear is provided with flanged housing at least, this flanged housing is provided with caulking groove, this pinion has a sheathed hole, this sheathed nose end edge is provided with limiting groove, this pinion is set on this flanged housing rotationally, other establishes on the caulking groove that a confinement block is arranged in the limiting groove of pinion and master gear, the internal diameter of this limiting groove is greater than the external diameter of confinement block, with the gap that limiting groove was kept of this confinement block and pinion, limit the side-play amount of pinion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610071814 CN101038025A (en) | 2006-03-16 | 2006-03-16 | Noise preventing device of balance gear of crank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610071814 CN101038025A (en) | 2006-03-16 | 2006-03-16 | Noise preventing device of balance gear of crank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101038025A true CN101038025A (en) | 2007-09-19 |
Family
ID=38889111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610071814 Pending CN101038025A (en) | 2006-03-16 | 2006-03-16 | Noise preventing device of balance gear of crank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101038025A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915297A (en) * | 2010-07-26 | 2010-12-15 | 国营长空精密机械制造公司 | Torsional spring type backlash gear mechanism |
| CN102192303A (en) * | 2011-06-22 | 2011-09-21 | 株洲齿轮有限责任公司 | Method for calculating engagement noises of spiral bevel gear pair |
| CN102359572A (en) * | 2011-09-28 | 2012-02-22 | 四川省眉山市东升齿轮有限公司 | Gear with double rows of gaps |
| CN104204618A (en) * | 2012-03-05 | 2014-12-10 | 卡特彼勒公司 | Scissors gear assembly |
| CN104632995A (en) * | 2013-11-07 | 2015-05-20 | 光阳工业股份有限公司 | Auxiliary device for balance shaft |
| AT521375A4 (en) * | 2018-11-15 | 2020-01-15 | Miba Sinter Austria Gmbh | gearing |
-
2006
- 2006-03-16 CN CN 200610071814 patent/CN101038025A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915297A (en) * | 2010-07-26 | 2010-12-15 | 国营长空精密机械制造公司 | Torsional spring type backlash gear mechanism |
| CN102192303A (en) * | 2011-06-22 | 2011-09-21 | 株洲齿轮有限责任公司 | Method for calculating engagement noises of spiral bevel gear pair |
| CN102359572A (en) * | 2011-09-28 | 2012-02-22 | 四川省眉山市东升齿轮有限公司 | Gear with double rows of gaps |
| CN104204618A (en) * | 2012-03-05 | 2014-12-10 | 卡特彼勒公司 | Scissors gear assembly |
| CN104204618B (en) * | 2012-03-05 | 2017-02-01 | 卡特彼勒公司 | Scissors gear assembly |
| CN104632995A (en) * | 2013-11-07 | 2015-05-20 | 光阳工业股份有限公司 | Auxiliary device for balance shaft |
| AT521375A4 (en) * | 2018-11-15 | 2020-01-15 | Miba Sinter Austria Gmbh | gearing |
| AT521375B1 (en) * | 2018-11-15 | 2020-01-15 | Miba Sinter Austria Gmbh | gearing |
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| PB01 | Publication | ||
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Open date: 20070919 |