CN202301837U - Primary driving gear for crank shaft of motorcycle engine - Google Patents
Primary driving gear for crank shaft of motorcycle engine Download PDFInfo
- Publication number
- CN202301837U CN202301837U CN 201120414840 CN201120414840U CN202301837U CN 202301837 U CN202301837 U CN 202301837U CN 201120414840 CN201120414840 CN 201120414840 CN 201120414840 U CN201120414840 U CN 201120414840U CN 202301837 U CN202301837 U CN 202301837U
- Authority
- CN
- China
- Prior art keywords
- driving gear
- primary driving
- drive gear
- crank shaft
- motorcycle engine
- 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
Links
Images
Landscapes
- Gear Transmission (AREA)
Abstract
The utility model discloses a primary driving gear for a crank shaft of a motorcycle engine. A location hole is arranged at the end portion of the primary driving gear and used for sleeving a cylindrical step portion of the crank shaft. By adding the concentric cylindrical location hole on the primary driving gear, the connection between the primary driving gear and the crank shaft further comprises the contact at the circular face position besides the spline position, namely more effective contact area is increased, so that the primary driving gear has better location. Sway is reduced during running, noises are removed, and integral quality of the engine is improved.
Description
Technical field
The utility model relates to a kind of primary drive gear that is used for motorcycle engine crankshaft.
Background technique
On motorcycle engine, primary drive gear drives miscellaneous part work through the turning effort of bent axle.Primary drive gear is connected through spline with bent axle; But in motorcycle industry; Because the manufacturer of primary drive gear and bent axle there are differences the production precision control of spline, cause primary drive gear to be connected the back with the bent axle spline like this and have bigger gap, easily double swerve; When engine running, produce noise, influence the total quality of motor.
The model utility content
The purpose of the utility model is the deficiency to existing technology, through increasing the area of contact of bent axle and primary drive gear, a kind of new primary drive gear that is used for motorcycle engine crankshaft is provided.
For achieving the above object, the utility model adopts following technological scheme to realize:
The primary drive gear that is used for motorcycle engine crankshaft, this primary drive gear end is provided with positioning hole, is used for the cylindrical step portion of the said bent axle of socket.
Further, said positioning hole and said cylindrical step portion concentric.
Further, the big or small and said cylindrical step of said positioning hole portion adapts.
The beneficial effect of the utility model is: through on primary drive gear, increasing the concentric column positioning hole; Make being connected except the spline position of primary drive gear and bent axle, also have the contact at disc place, promptly increase more effective area of contact; Primary drive gear is better located; Rock minimizing during running, abate the noise, improved the total quality of motor.
Description of drawings
Fig. 1 is the said sectional view that is used for the primary drive gear of motorcycle engine crankshaft of the utility model;
Fig. 2 is the primary drive gear and sectional view after bent axle is connected among Fig. 1.
Embodiment
For structure, characteristic and effect thereof to the utility model, can have and further understand and be familiar with, lift a preferred embodiment at present, and be described with reference to the accompanying drawings as follows:
As shown in Figure 1, the described primary drive gear 1 that is used for motorcycle engine crankshaft 2 of the utility model, it is connected with bent axle through internal spline 12.Said this primary drive gear end is provided with positioning hole 11, is used for the cylindrical step portion 21 of the said bent axle 2 of socket.Said positioning hole 11 and said cylindrical step portion 21 concentrics.Said positioning hole 11 sizes adapt with said cylindrical step portion 21.
The above is merely the preferred embodiment of the utility model; It is not the practical range that limits the utility model with this; Allly be familiar with this operator; The principle and the technical characteristics of utilization the utility model, various changes and the decoration done all should be covered by within the protection category that these claims define.
Claims (3)
1. be used for the primary drive gear of motorcycle engine crankshaft, it is characterized in that, this primary drive gear end is provided with positioning hole, is used for the cylindrical step portion of the said bent axle of socket.
2. the primary drive gear that is used for motorcycle engine crankshaft according to claim 1 is characterized in that, said positioning hole and said cylindrical step portion concentric.
3. the primary drive gear that is used for motorcycle engine crankshaft according to claim 1 is characterized in that, the big or small and said cylindrical step of said positioning hole portion adapts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120414840 CN202301837U (en) | 2011-10-26 | 2011-10-26 | Primary driving gear for crank shaft of motorcycle engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120414840 CN202301837U (en) | 2011-10-26 | 2011-10-26 | Primary driving gear for crank shaft of motorcycle engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202301837U true CN202301837U (en) | 2012-07-04 |
Family
ID=46370740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120414840 Expired - Lifetime CN202301837U (en) | 2011-10-26 | 2011-10-26 | Primary driving gear for crank shaft of motorcycle engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202301837U (en) |
-
2011
- 2011-10-26 CN CN 201120414840 patent/CN202301837U/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202301837U (en) | Primary driving gear for crank shaft of motorcycle engine | |
| CN204852248U (en) | Centrifugation polymerization integral type metal lining nylon wheel | |
| CN203162114U (en) | Automobile hub reduction drive axle planet carrier | |
| CN202690920U (en) | Belt tightening pulley with butterfly spring | |
| CN206555365U (en) | New work engine precision-sleeve chain inner sheet | |
| CN201351533Y (en) | Motor head outputting power device | |
| CN201636247U (en) | Friction disc for vehicle gear box | |
| CN206346880U (en) | Direct-drive type gasoline engine plunger pump drive load mechanism | |
| CN203783725U (en) | Diesel power leading-out device | |
| CN204547571U (en) | Fork truck front driving axle wheel limit structure | |
| CN203161963U (en) | Motor built-in balance mechanism | |
| CN203686057U (en) | Brake camshaft | |
| CN202334075U (en) | Motor casing and stator guide structure | |
| CN203051454U (en) | Splined shaft | |
| CN203570439U (en) | Cylinder body structure with oil baffle plate | |
| CN202298150U (en) | Connecting structure of direct drive motor for high vehicle | |
| CN202301867U (en) | Improved lathe-head belt wheel assembly | |
| CN201582370U (en) | Axial limit structure for built-in thin bushing in shaft hole of spherical bevel gear | |
| CN201627665U (en) | Starter driving toothed head mounting structure | |
| CN2937667Y (en) | Glass fibre nelon gear on star reducing gear of starter | |
| CN203157589U (en) | Wheel reduction drive axle hub for vehicle | |
| CN201575070U (en) | Automobile hub bearing unit | |
| CN206530672U (en) | A kind of low noise driving gear splined shaft | |
| CN202579911U (en) | Timing idle gear | |
| CN204784588U (en) | Fixed driving sprocket |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |
|
| CX01 | Expiry of patent term |