CN203562877U - Motor shaft - Google Patents
Motor shaft Download PDFInfo
- Publication number
- CN203562877U CN203562877U CN201320774097.2U CN201320774097U CN203562877U CN 203562877 U CN203562877 U CN 203562877U CN 201320774097 U CN201320774097 U CN 201320774097U CN 203562877 U CN203562877 U CN 203562877U
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- diameter
- gear
- small
- motor shaft
- diameter cylinder
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Abstract
The utility model discloses a motor shaft which includes a cylindrical shaft body. The two ends of the shaft body are each provided with a step so that a large-diameter cylinder is formed at the middle part and smaller-diameter cylinders are formed at the two ends, wherein a gear is coaxially arranged on the small-diameter cylinder of a step at one end. A boss is arranged in the peripheral direction at a position of the large-diameter cylinder surface, close to the step provided with the gear. The gear is formed through being machined on the corresponding small-diameter cylinder surface and the tooth-top circle diameter of the gear is smaller than the diameter of the small-diameter cylinder. During use, the shaft body is in transmission cooperation with a motor casing through a bearing which is sleeved on a step not provided with any gear and a bearing which is sleeved on the large-diameter cylinder and abuts against the boss. Because the tooth-top diameter of the gear is smaller than the diameter of the small-diameter cylinder, during assembly or disassembly, the shaft body is capable of easily passing through the bearing sleeved on the large-diameter cylinder and being taken out and the same time, the prior problems of gearing looseness and jumping resulted from independent arrangement of the gearings on the shaft body are prevented.
Description
Technical field
The utility model relates to motor component, particularly a kind of motor shaft that is applicable to battery-operated motor cycle brushless electric machine.
Background technology
At present, the general employing of drive motors of battery-operated motor cycle has brush induction motor, it mainly consists of parts such as stator, rotors, conventionally its stator adopts wheel hub structure, and the axle of rotor and wheel is made one, and the axle of rotor and wheel is made one direct drive of wheel and rotated, speed change relies on control motor speed to realize completely, force motor often in inefficient service area, cause energy consumption to increase, and affect battery life.
Separately there is battery-operated motor cycle to adopt the form of brushless electric machine acceleration and deceleration case as drive unit, the middle part of its motor shaft and the rotor of brushless electric machine are made one, motor shaft is changed together with rotor after damaging, this must strengthen maintenance cost, for this problem, in prior art, there is a kind of motor shaft being fixedly connected with periphery of rotor by keyway, the clutch end of this motor shaft can be connected with reduction box by shaft coupling, the reducing transmission structure relative complex being coupled together by this motor shaft, repair demolition difficulty.
In sum, its structure of the motor shaft in existing motor can not adapt to the driving arrangement that brushless electric machine decelerator integrally combines, and can not play easy installation and removal, the action effect of drive mechanism advantages of simple.
For above-mentioned deficiency, applicant has invented a kind of motor shaft that can be applicable to deceleration transmission brushless electric machine, to address the above problem.
Utility model content
In view of this, the utility model provides a kind of motor shaft, this motor shaft its structure of motor shaft in is compared to existing technology more reasonable, it is applicable to being arranged in double reduction brushless electric machine, plays to solve to adopt existing motor shaft can not simplify the problem in the product that decelerator combines with brushless electric machine as power output shaft.
The utility model solves the problems of the technologies described above by following technological means:
Motor shaft of the present utility model, comprise columned axle body, described axle body two ends respectively have a step,, form the cylinder of middle part major diameter, diameter small in ends, wherein in the small diameter cylinders of one end step, be coaxially provided with gear, on large diameter cylindrical surface, near the edge, step position with tooth, be circumferentially provided with boss, described gear is to process on small-diameter circular cylinder, and the tip diameter of this gear is less than the diameter of small diameter cylinders.
Further, described axle body is hollow.
Further, on described large diameter cylindrical surface, offer vertically keyway.
Further, described gear is involute helical gear.
The end of establishing cogged small diameter cylinders further, is also processed with a step.
The beneficial effects of the utility model: motor shaft of the present utility model, comprise columned axle body, described axle body two ends respectively have a step, form the cylinder of middle part major diameter, diameter small in ends, wherein in the small diameter cylinders of one end step, be coaxially provided with gear, on large diameter cylindrical surface, near the edge, step position with tooth, be circumferentially provided with boss, described gear is to process on small-diameter circular cylinder, and the tip diameter of this gear is less than the diameter of small diameter cylinders.During use, axle body can be non-with the bearing on the step of gear one end and be sheathed on the bearing being resisted against on boss on cylinder with large diameter and coordinate with electric machine casing transmission by being sheathed on respectively, because the tip diameter of gear is less than the diameter of small diameter cylinders, while making installation or removal, axle body can easily take out from be set in the bearing cylinder with large diameter.In addition, because described gear one on small-diameter circular cylinder processes, so avoided arranging separately the loosening and problem of beating of gear that gear causes on axle body in the past.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described.
Fig. 1 is the cross-sectional view of the utility model motor shaft;
Fig. 2 is the another kind of structural representation of the utility model motor shaft;
Fig. 3 is the end view of the utility model motor shaft.
Embodiment
Below with reference to accompanying drawing, the utility model is elaborated, as shown in figs. 1 and 3, the motor shaft of the present embodiment, comprise columned axle body 1, described axle body two ends respectively have a step 1a, 1b, form middle part major diameter, the cylinder of diameter small in ends, wherein in the small diameter cylinders of one end step, be coaxially provided with gear 12, on large diameter cylindrical surface, near the edge, step position with tooth, be circumferentially provided with boss 13, on described large diameter cylindrical surface, offer vertically keyway 14, described gear is to process on small-diameter circular cylinder, the tip diameter of this gear is less than the diameter of small diameter cylinders, particularly, on axle body, from gear one end to the other end is set, be followed successively by small-diameter circular shell of column, cylinder with large diameter section, boss section, cylinder with large diameter section and small-diameter circular shell of column, the ratio of going up is along the axial length preferably: 28:10:3:55:9.During use, axle body can be non-with the bearing on the step of gear one end and be sheathed on the bearing being resisted against on boss on cylinder with large diameter and coordinate with electric machine casing transmission by being sheathed on respectively, because the tip diameter of gear is less than the diameter of small diameter cylinders, while making installation or removal, axle body can easily take out from be set in the bearing cylinder with large diameter.In addition, because described gear one on small-diameter circular cylinder processes, so avoided arranging separately the loosening and problem of beating of gear that gear causes on axle body in the past.The motor shaft structure of motor shaft of the present utility model in is compared to existing technology more reasonable, is applicable to being arranged in double reduction brushless electric machine.
As the further improvement of technique scheme, described axle body is hollow.Described axle body is set to hollow, and the one, can reduce material usage and own wt, the 2nd, can strengthen the radiating effect of axial region.
As the further improvement of technique scheme, described gear is involute helical gear.Adopt helical gear design can strengthen area of contact, prevent gear tooth deformation, and reduce wearing and tearing, and then can extend service life of gear.
As the further improvement of technique scheme, as shown in Figure 2, described in establish cogged small diameter cylinders end be also processed with a step 1c.By the step 1c of small-diameter circular column end, the small-diameter circular styletable of axle body can be inserted in the power output hollow wheel gear of secondary transmission brushless electric machine, make axle body and power output hollow wheel gear more steady in transmission process.
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 modify or be equal to replacement the technical solution of the utility model, 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 (5)
1. a motor shaft, comprise columned axle body (1), it is characterized in that: described axle body two ends respectively have a step (1a, 1b), form the cylinder of middle part major diameter, diameter small in ends, wherein in the small diameter cylinders of one end step, be coaxially provided with gear (12), on large diameter cylindrical surface, near edge, the cogged step of tool (1b) position, be circumferentially provided with boss (13), described gear is to process on small-diameter circular cylinder, and the tip diameter of this gear is less than the diameter of small diameter cylinders.
2. motor shaft according to claim 1, is characterized in that: described axle body is hollow.
3. motor shaft according to claim 2, is characterized in that: on described large diameter cylindrical surface, offer vertically keyway (14).
4. motor shaft according to claim 3, is characterized in that: described gear is involute helical gear.
5. according to the motor shaft described in claim 1-4 any one, it is characterized in that: described in establish cogged small diameter cylinders end be also processed with a step (1c).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320774097.2U CN203562877U (en) | 2013-11-29 | 2013-11-29 | Motor shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320774097.2U CN203562877U (en) | 2013-11-29 | 2013-11-29 | Motor shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203562877U true CN203562877U (en) | 2014-04-23 |
Family
ID=50512575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320774097.2U Expired - Fee Related CN203562877U (en) | 2013-11-29 | 2013-11-29 | Motor shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203562877U (en) |
-
2013
- 2013-11-29 CN CN201320774097.2U patent/CN203562877U/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 |
Granted publication date: 20140423 Termination date: 20141129 |
|
| EXPY | Termination of patent right or utility model |