CN203394635U - Engine with built-in balance gear - Google Patents
Engine with built-in balance gear Download PDFInfo
- Publication number
- CN203394635U CN203394635U CN201320376540.0U CN201320376540U CN203394635U CN 203394635 U CN203394635 U CN 203394635U CN 201320376540 U CN201320376540 U CN 201320376540U CN 203394635 U CN203394635 U CN 203394635U
- Authority
- CN
- China
- Prior art keywords
- balance
- crankcase
- gear
- driven gear
- built
- 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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Abstract
The utility model relates to an engine with a built-in balance gear. The engine comprises a crankcase, a crankshaft and a balance shaft, wherein the crankshaft and the balance shaft are matched in a transmission way through a balance gear engagement pair; the balance gear engagement pair at least comprises a balance driving gear which is arranged on the crankshaft in a transmission matching way and a balance driven gear which is arranged on the balance shaft in the transmission matching way, and the balance driven gear is located in the crankcase; the balance driven gear is placed in the crankcase, i.e. the balance driven gear is arranged between the two ends of the balance shaft matched with the crankcase, so that the crankcase is more compact in structure, and the space occupation can be reduced; a cantilever structure is eliminated to eliminate the additional moment caused by the cantilever structure, so that the eccentric wear tendency caused by the additional moment can be prevented, and the vibration of the engine can be reduced; meanwhile, the balance driven gear can be firstly installed, and then the balance shaft can be installed integrally, so that the balance driven gear and the balance shaft are subjected to interference fit installation, and even can be integrally formed, and the operation noise of the balance shaft gears can be reduced and even eliminated.
Description
Technical field
The utility model relates to a kind of motor, particularly a kind of motor of built-in balance gear.
Background technique
Trunnion shaft is effectively to slow down car load vibration, improves the engine components of the travelling comfort of driving.The more employing list balance shaft structure of mini engine of single cylinder, small displacement, general using gear transmission mode carries out work, drives balance driving gear, balance driven gear and the trunnion shaft being connected by crankshaft rotating; Trunnion shaft can balance account for the sizable single order vibration of whole vibration ratio, make motor vibration be improved significantly.In prior art, for easy to assembly, trunnion shaft driving gear and balance driven gear are all installed on outside crankcase, make crankcase overall structure volume larger; The balance shaft structure of this structure, increases the lubricated load in crankcase cover; Simultaneously, the bent axle shaft part peace weighing apparatus axle shaft part that stretches out crankcase forms cantilever structure, due to the existence of balance gear wheel set, can produce obvious additional moment, cause trunnion shaft, bent axle operation to there is eccentric wear tendency to a certain degree, thereby cause the vibrations of motor to increase; Owing to being installed on outside, be post-mounting structure, thereby, can only adopt common non-interference fit, cause moving rear noise larger.
Therefore, need to improve existing balance shaft system of engine, eliminate the additional moment causing due to cantilever structure, thereby avoid the eccentric wear tendency that causes thus, further make the vibrations of motor reduce, and, the running noises of balance shaft gear reduced.
Model utility content
In view of this, the purpose of this utility model is to provide a kind of motor of built-in balance gear, eliminates the additional moment causing due to cantilever structure, thereby avoid the eccentric wear tendency causing thus, further make the vibrations of motor reduce, and, the running noises of balance shaft gear reduced.
The motor of built-in balance gear of the present utility model, comprise crankcase, bent axle and trunnion shaft, described bent axle and trunnion shaft coordinate by the transmission of balance gear engagement pair, described balance gear engagement pair at least comprises that transmission is equipped with in bent shaft balancing driving gear and transmission and is equipped with the balance driven gear in trunnion shaft, and described balance driven gear is positioned at crankcase.
Further, described trunnion shaft holoaxial section is positioned at crankcase Nei Qie two ends and is rotatably assorted and is supported in crankcase; Reduce the course of working of crankcase, reduce seal point setting, guarantee the integrity of crankcase.
Further, described balance driving gear is positioned at crankcase; Whole balance gear engagement pair is all positioned at crankcase, reduces the lubricated load in crankcase cover, meanwhile, makes bent axle itself reduce additional moment, guarantees that its operation is smooth and easy.
Further, described balance driving gear and the direct engagement driving of balance driven gear; Improve transmission efficiency, make crankcase overall compact.
Further, described bent axle and crankcase are rotatably assorted and crankcase is stretched out for transmission in one end.
Further, the integrally formed space that is formed for installing balance gear engagement pair of described crankcase; Make crankcase structure compact simple, integrity is strong.
The beneficial effects of the utility model are: the motor of built-in balance gear of the present utility model, and balance driven gear is arranged in crankcase, is installed between the two ends that trunnion shaft coordinates with crankcase, makes crankcase structure more compact, reduces space hold; And eliminate cantilever structure, thus eliminate the additional moment causing due to cantilever structure, avoid the eccentric wear causing to be thus inclined to, the vibrations of motor are reduced; Meanwhile, this structure can first be installed balance driven gear integral installation trunnion shaft again, thereby balance driven gear can be installed and even can be made into one with trunnion shaft interference fit, reduces even to eliminate the running noises of balance shaft gear.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described.
Fig. 1 is sectional view of the present utility model.
Embodiment
Fig. 1 is sectional view of the present utility model, as shown in the figure: the motor of the built-in balance gear of the present embodiment, comprise crankcase 1, bent axle 2 and trunnion shaft 3, described bent axle 2 and trunnion shaft 3 coordinate by the transmission of balance gear engagement pair, described balance gear engagement pair at least comprises that transmission is equipped with in bent shaft balancing driving gear 4 and transmission and is equipped with the balance driven gear 5 in trunnion shaft, and described balance driven gear 5 is positioned at crankcase 1; Balance gear engagement pair can be balance driving gear 4 and the direct engagement driving of balance driven gear 5, also can adopt intermediate gear transition, all can realize.
In the present embodiment, described trunnion shaft 3 holoaxial sections are positioned at crankcase 1 Nei Qie two ends and are rotatably assorted and are supported in crankcase 1; Reduce the course of working of crankcase 1, reduce the seal point setting between crankcase 1 and crankcase cover 6, guarantee the integrity of crankcase.
In the present embodiment, described balance driving gear 4 is positioned at crankcase 1; Whole balance gear engagement pair is all positioned at crankcase 1, reduces the lubricated load in crankcase cover 6, meanwhile, makes bent axle 2 itself reduce additional moment, guarantees that its operation is smooth and easy.
In the present embodiment, described balance driving gear 4 and the direct engagement driving of balance driven gear 5; Improve transmission efficiency, make crankcase overall compact.
In the present embodiment, described bent axle 2 is rotatably assorted with crankcase 1 and crankcase 1 is stretched out for transmission in one end.
In the present embodiment, the integrally formed space that is formed for installing balance gear engagement pair of described crankcase 1; Make crankcase structure compact simple, integrity is strong.
Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can to the technical solution of the utility model, modify or/and be equal to replacement, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (6)
1. the motor of a built-in balance gear, comprise crankcase, bent axle and trunnion shaft, described bent axle and trunnion shaft coordinate by the transmission of balance gear engagement pair, it is characterized in that: described balance gear engagement pair at least comprises that transmission is equipped with in bent shaft balancing driving gear and transmission and be equipped with the balance driven gear in trunnion shaft, described balance driven gear is positioned at crankcase.
2. the motor of built-in balance gear according to claim 1, is characterized in that: described trunnion shaft holoaxial section is positioned at crankcase Nei Qie two ends and is rotatably assorted and is supported in crankcase.
3. the motor of built-in balance gear according to claim 2, is characterized in that: described balance driving gear is positioned at crankcase.
4. the motor of built-in balance gear according to claim 3, is characterized in that: described balance driving gear and the direct engagement driving of balance driven gear.
5. the motor of built-in balance gear according to claim 4, is characterized in that: described bent axle and crankcase are rotatably assorted and crankcase is stretched out for transmission in one end.
6. the motor of built-in balance gear according to claim 5, is characterized in that: the integrally formed space that is formed for installing balance gear engagement pair of described crankcase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320376540.0U CN203394635U (en) | 2013-06-27 | 2013-06-27 | Engine with built-in balance gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320376540.0U CN203394635U (en) | 2013-06-27 | 2013-06-27 | Engine with built-in balance gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203394635U true CN203394635U (en) | 2014-01-15 |
Family
ID=49906171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320376540.0U Expired - Fee Related CN203394635U (en) | 2013-06-27 | 2013-06-27 | Engine with built-in balance gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203394635U (en) |
-
2013
- 2013-06-27 CN CN201320376540.0U patent/CN203394635U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140115 Termination date: 20190627 |