CN201687630U - Driving shaft of automobile starter with improved spiral spline structure - Google Patents
Driving shaft of automobile starter with improved spiral spline structure Download PDFInfo
- Publication number
- CN201687630U CN201687630U CN2010202169238U CN201020216923U CN201687630U CN 201687630 U CN201687630 U CN 201687630U CN 2010202169238 U CN2010202169238 U CN 2010202169238U CN 201020216923 U CN201020216923 U CN 201020216923U CN 201687630 U CN201687630 U CN 201687630U
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- CN
- China
- Prior art keywords
- helical spline
- driving shaft
- spline
- spiral spline
- arc
- 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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- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model discloses a driving shaft of an automobile starter with an improved spiral spline structure. A spiral spline is arranged on the driving shaft which is assembled on a one-way clutch through the spiral spline; arc-shaped pressure-bearing areas are respectively arranged at two sides of the top of spiral spline; and the arc of the arc-shaped pressure-bearing areas is R0.4-0.6. In the utility model, the two sides of the top of the spiral spline are arc-shaped, therefore, the spiral spline on the driving shaft is in surface contact with an internal spline of the one-way clutch under stress, the local pressure is greatly reduced, the smooth separation of the driving shaft and the one-way clutch is ensured, the structure is simple, and the running of the automobile starter is safer and more reliable.
Description
Technical field
The utility model relates to a kind of automobile starting motor drive shaft, particularly relates to the automobile starting motor drive shaft that a kind of tool improves helical spline structure.
Background technique
The live axle part is used for automobile starter, in planetary gear reduction system, be tie-rod (live axle) transmitting torque, it is provided with helical spline, the part that cooperates with helical spline is called overrunning clutch, the starter motor energising, switch is released overrunning clutch with the engagement of motor car engine flywheel ring gear and is driven engine revolution on the starter motor, oil supply, engine start, finish startup after, the dynamo-electric source of disconnected power down, switch discharges, and overrunning clutch is return along the live axle helical spline, finishes a circulation, in whole work cycle, after key was engine start, overrunning clutch must be return rapidly, broke away from and the flywheel engagement, if can not break away from, then flywheel ring gear will instead drive clutch, and then drive motor high speed rotating (tooth of anti-band was than about 20: 1), and speed may reach more than 50,000 commentaries on classics, this moment, motor each part can not bear, and will be got rid of diffusing and damage by following centrifugal force at a high speed.
When the motor switch outage discharges, overrunning clutch only relies on the strength of return spring to return, in addition when not breaking away from engagement, flywheel ring gear is counter is with transmission, certainly be that radial force is arranged, so the internal thread spline of one-way element and the outer spiral spline of live axle are also will move axially to return when radial pressure is arranged, the common external splines processing method of present most of producer is that rolling and stranding are rolled.The accumulation and the distortion of material are arranged on the tooth top of processing back.So also necessary grinding top circle, through after the grinding, the side of spline and end face form wedge angle, and the front said when inside and outside spline is stressed it substantially all is a contact or line contact, so under very big radial force, when the external splines wedge angle after the grinding contacted with internal spline point, pressure was just very big, therefore incarceration and stuck phenomenon will take place, thereby can not withdraw from smoothly, cause aforesaid electrical fault.
The model utility content
The purpose of this utility model is to provide a kind of tool to improve the automobile starting motor drive shaft of helical spline structure, and it has simple in structure, safe characteristics.
The purpose of this utility model is to be achieved through the following technical solutions:
A kind of tool improves the automobile starting motor drive shaft of helical spline structure, and it is provided with helical spline, and described live axle is assemblied on the overrunning clutch by helical spline, and wherein, both sides, the key of described helical spline top all are set to the arc confined area.
The circular arc of described arc confined area is R0.4～0.6.
The beneficial effects of the utility model are, described tool improves the key top both sides design arcuate structure of the automobile starting motor drive shaft of helical spline structure with helical spline, helical spline on live axle is stressed with the internal spline of overrunning clutch like this is that face contacts as the time spent, reduced local pressure greatly, to guarantee that live axle and the smooth of overrunning clutch separate, not only simple in structure, and make the automobile starter operation more safe and reliable.
Description of drawings
With embodiment the utility model is described in further detail with reference to the accompanying drawings below.
Fig. 1 is the sectional drawing of the automobile starting motor drive shaft of the utility model tool improvement helical spline structure,
Fig. 2 is the structural representation of helical spline of the present utility model.
Among the figure:
1, live axle; 2, overrunning clutch; 3, helical spline; 30, key top; 31, arc confined area.
Embodiment
Please refer to Fig. 1 to shown in Figure 2, Fig. 1 is the sectional drawing of the automobile starting motor drive shaft of the utility model tool improvement helical spline structure, and Fig. 2 is the structural representation of helical spline of the present utility model.
In present embodiment, a kind of tool improves the automobile starting motor drive shaft of helical spline structure, it comprises live axle 1 and is arranged at helical spline 3 on the live axle 1, described live axle 1 is assemblied on the overrunning clutch 2 by helical spline 3, one end of described overrunning clutch 2 is provided with the internal thread spline (not illustrating among the figure) with helical spline 3 engagements, the key of described helical spline 3 pushes up 30 both sides and all is set to arc confined area 31, and the circular arc of described arc confined area 31 is R0.5.
When the motor switch outage discharges, overrunning clutch 2 only relies on the strength of return spring to return, the helical spline 3 of the internal thread spline of described overrunning clutch 2 and live axle 1 moves axially to be return, helical spline 3 on the live axle 1 is stressed with the internal spline of overrunning clutch 2 at this moment is that face contacts as the time spent, reduced local pressure greatly, live axle 1 is separated smoothly with overrunning clutch 2, not only simple in structure, and make the automobile starter operation more safe and reliable.
Claims (2)
1. a tool improves the automobile starting motor drive shaft of helical spline structure, and it is provided with helical spline, and described live axle is assemblied on the overrunning clutch by helical spline, it is characterized in that: the both sides, key top of described helical spline all are set to the arc confined area.
2. tool according to claim 1 improves the automobile starting motor drive shaft of helical spline structure, and it is characterized in that: the circular arc of described arc confined area is R0.4～0.6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202169238U CN201687630U (en) | 2010-06-07 | 2010-06-07 | Driving shaft of automobile starter with improved spiral spline structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202169238U CN201687630U (en) | 2010-06-07 | 2010-06-07 | Driving shaft of automobile starter with improved spiral spline structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201687630U true CN201687630U (en) | 2010-12-29 |
Family
ID=43375913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202169238U Expired - Fee Related CN201687630U (en) | 2010-06-07 | 2010-06-07 | Driving shaft of automobile starter with improved spiral spline structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201687630U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852161A (en) * | 2010-06-07 | 2010-10-06 | 无锡赛可电气有限公司 | Automobile starting motor drive shaft with improved helical spline structure |
-
2010
- 2010-06-07 CN CN2010202169238U patent/CN201687630U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852161A (en) * | 2010-06-07 | 2010-10-06 | 无锡赛可电气有限公司 | Automobile starting motor drive shaft with improved helical spline structure |
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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: 20101229 Termination date: 20130607 |