CN208417498U - A kind of planetary gear transmission device and a kind of motor - Google Patents
A kind of planetary gear transmission device and a kind of motor Download PDFInfo
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- CN208417498U CN208417498U CN201820755492.9U CN201820755492U CN208417498U CN 208417498 U CN208417498 U CN 208417498U CN 201820755492 U CN201820755492 U CN 201820755492U CN 208417498 U CN208417498 U CN 208417498U
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- planetary gear
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Abstract
The utility model discloses a kind of planetary gear transmission device and a kind of motor, planetary gear transmission device includes planet carrier and multiple planetary wheeling assemblies；Planetary wheeling assembly is arranged on planet carrier；Planetary wheeling assembly includes compound planet gear, planet pin and deep groove ball bearing；Planet pins position is in the inner hole of compound planet gear；The inner ring of deep groove ball bearing is fixed on the end of planet pin, and the outer ring of deep groove ball bearing is mutually fixed with planet carrier；Compound planet gear includes first planetary gear and the second planetary gear；Planet pin successively includes first bearing fixed part, first gear fixed part, second gear fixed part and second bearing fixed part；First bearing fixed part and second bearing fixed part are matched with deep groove ball bearing；First gear fixed part and the inner hole of first planetary gear are interference fitted, and second gear fixed part and the second planetary gear inner hole are interference fitted；The axial float that can prevent compound planet gear from generating in motor operation.
Description
Technical field
The utility model relates to technical field of motors more particularly to a kind of planetary gear transmission devices and a kind of motor.
Background technique
Electric bicycle has gradually been received by the majority of consumers as a kind of environmental protection, the energy-efficient vehicles no matter
At home or external, the sales volume of electric bicycle worldwide is also increasing year by year, and electric bicycle substitutes bicycle
Trend gradually expand, and core component of the electric bicycle transmission device part as electric bicycle, the quality of quality
Often decide the superiority and inferiority of electric bicycle entirety.
The existing small hyper tape gear hub motor of bicycle, is by installing needle bearing between planetary gear inner hole and planet pin
Mode, constitute planetary wheeling assembly；The planetary wheeling assembly is installed in planet carrier again later.Wherein, because planetary gear is expert at
Biggish axial movement value can be generated in carrier, collides planet carrier, so that noise can be generated.
Utility model content
To solve problems of the prior art, the utility model proposes a kind of planetary gear transmission device and a kind of electricity
Machine, specifically:
On the one hand a kind of planetary gear transmission device is provided, the planetary gear transmission device includes planet carrier and multiple planets
Wheel assembly；The planetary wheeling assembly is arranged on the planet carrier；
The planetary wheeling assembly includes compound planet gear, planet pin and deep groove ball bearing；The planet pins position is in described
In the inner hole of compound planet gear；The inner ring of the deep groove ball bearing is fixed on the end of the planet pin, the deep-groove ball axis
The outer ring held mutually is fixed with the planet carrier；
The compound planet gear includes first planetary gear and the second planetary gear；The planet pin successively includes first
Bearing fixed part, first gear fixed part, second gear fixed part and second bearing fixed part；
The first bearing fixed part and second bearing fixed part are matched with the deep groove ball bearing；First tooth
The inner hole for taking turns fixed part and the first planetary gear is interference fitted, the second gear fixed part and second planetary gear
Inner hole interference fit.
Further, the first recessed annular structure is offered on the inside of the first planetary gear outer end face；The planet
Pin further includes first gear limiting section；
The first gear limiting section is between the first bearing fixed part and first gear fixed part；Also, institute
First gear limiting section is stated to match with the first recessed annular structure.
Further, the second recessed annular structure is offered on the inside of the second planetary gear outer end face；
The planetary wheeling assembly further includes circlip；The planet pin further includes jump-ring slot and second gear limiting section；It is described
Jump-ring slot and second gear limiting section are successively set between the second gear fixed part and second bearing fixed part；The card
Spring is located to be matched in the jump-ring slot, and with the second recessed annular structure.
Further, the diameter of the first gear limiting section is greater than the diameter of the first gear fixed part.
Further, the diameter of the second gear limiting section is less than or equal to the diameter of the second gear fixed part.
Further, the diameter of the first bearing fixed part is less than the diameter of the first gear limiting section；
The diameter of the second bearing fixed part is less than the diameter of the second gear limiting section.
Further, the planet carrier includes the first row starboard, the second planet plate and connecting shaft；The first row starboard and
Second planet plate is fixedly connected by the connecting shaft；
Multiple axis holes, the axis hole of the first row starboard and are offered on the first row starboard and the second planet plate
The axis hole of two planet plates is oppositely arranged；Also, the outer ring of described deep groove ball bearing one end is fixed on the axis of the first row starboard
In hole, the outer ring of the deep groove ball bearing other end is fixed in the axis hole of the second planet plate.
Further, the quantity of the first row starboard upper shaft hole is identical as the quantity of the planet pin, second row
The quantity of starboard upper shaft hole is identical as the quantity of the planet pin.
Further, the planet pin is fixed in the inner hole of the compound planet gear, alternatively, the planet pin and institute
Compound planet gear is stated to be structure as a whole.
On the other hand a kind of motor is provided, the motor includes planetary gear transmission device described above.
A kind of planetary gear transmission device provided by the utility model and a kind of motor, have the beneficial effect that
The compound planet gear of the utility model is fixedly connected with planet pin, and wherein the both ends of planet pin are provided with deep-groove ball
Bearing constitutes planetary wheeling assembly；It, can by thering is the planetary wheeling assembly of deep groove ball bearing to install in planet carrier this set
The axial float for preventing compound planet gear from generating in motor operation；So as to reduce the collision of gear and planet carrier, subtract
Few unnecessary friction, and then the loss of electric efficiency can be reduced；Bring in motor operation course can also be reduced simultaneously
Noise promotes user experience and user's viscosity.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of cross-sectional view of planetary wheeling assembly provided by the embodiment of the utility model；
Fig. 2 is the structural representation of a kind of planetary wheeling assembly and planet carrier assembling structure provided by the embodiment of the utility model
Figure；
Fig. 3 is the side view of a kind of planetary wheeling assembly and planet carrier assembling structure provided by the embodiment of the utility model；
Fig. 4 is the cross-sectional view of a kind of planetary wheeling assembly and planet carrier assembling structure provided by the embodiment of the utility model.
In figure: planet carrier 1, the first row starboard 11, the second planet plate 12, connecting shaft 13, axis hole 14, first planetary gear
21, the first recessed annular structure 211, the second planetary gear 22, the second recessed annular structure 221, planet pin 23, first bearing is solid
Determine portion 231, first gear fixed part 232, second gear fixed part 233, second bearing fixed part 234, first gear limiting section
235, second gear limiting section 236, jump-ring slot 237, deep groove ball bearing 24.
Specific embodiment
In order to make those skilled in the art better understand the scheme of the utility model, below in conjunction with the utility model reality
The attached drawing in example is applied, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment is only the embodiment of the utility model a part, instead of all the embodiments.Based on the reality in the utility model
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts is all answered
When the range for belonging to the utility model protection.
Need to give explanation, " outside " and " inside " of the utility model is come according to the central axis of described device
It sees, is " inside ", that namely far from the central axis opposite with the inside close to that side of the central axis
Side is " outside "." left side " and " right side " in the utility model is the close electricity from the point of view of the motor mechanism according to described device
Being beyond machine mechanism " left side " is " right side " beyond the separate motor mechanism.
The utility model proposes the technical solution that a kind of planetary gear adds bearings at both ends and holder combination mode, the technical sides
Case relates generally to the part of bicycle (electric bicycle, electric booster bicycle etc.) small hyper tape gear hub motor；Wherein, our
Planetary gear and planet pin in case are connected, and planet pin both ends install deep groove ball bearing and constitute planetary wheeling assembly, then the planetary gear
Component is installed in planet carrier, can prevent planetary gear from generating axial float.
Specifically, the utility model embodiment proposes a kind of planetary gear transmission device, as shown in Figs 1-4, the planet
Wheel transmission device includes planet carrier 1 and multiple planetary wheeling assemblies；The planetary wheeling assembly is arranged on the planet carrier 1；Wherein,
The quantity of the planetary wheeling assembly is 3-8.
The planetary wheeling assembly includes compound planet gear, planet pin 23 and deep groove ball bearing 24；The planet pin 23
In the inner hole of the compound planet gear；The inner ring of the deep groove ball bearing 24 is fixed on the end of the planet pin 23, institute
The outer ring and 1 phase of planet carrier for stating deep groove ball bearing 24 are fixed；
As shown in Figs. 1-2, the compound planet gear includes first planetary gear 21 and the second planetary gear 22；The row
Star pin 23 successively includes first bearing fixed part 231, first gear fixed part 232, second gear fixed part 233 and second bearing
Fixed part 234；
As shown in Figure 1, the first bearing fixed part 231 and second bearing fixed part 234 with the deep groove ball bearing
24 match；The first gear fixed part 232 and the inner hole of the first planetary gear 21 are interference fitted, the second gear
The inner hole of fixed part 233 and second planetary gear 22 is interference fitted.
Wherein, planet pin 23 directly can be fixed on duplex planet tooth using the fastening force of interference fit in the present embodiment
In the inner hole of wheel.
It should be noted that can open up groove on the end face of gear as a kind of feasible embodiment, utilization is recessed
Planet pin 23 is further fixed together by slot mode of cooperation tool locating in assembly with compound planet gear.So right
Ying Di, as shown in Figure 1, offering the first recessed annular structure 211 on the inside of 21 outer end face of the first planetary gear；The row
Star pin 23 further includes first gear limiting section 235；The first gear limiting section 235 is located at the first bearing fixed part 231
Between first gear fixed part 232；Also, the first gear limiting section 235 and 211 phase of the first recessed annular structure
Cooperation.In detail, for the installation of planet pin 23 and compound planet gear, the diameter of the first gear limiting section 235 is greater than
The diameter of the first gear fixed part 232.
As it can be seen that can be by opening up the first recessed annular structure 211 in 21 outer end face of first planetary gear, cooperation tooling is fixed
Position carries out effective fixation of planet pin 23 and compound planet gear, and then achievees the effect that prevent axial float.
Further, in a kind of feasible embodiment, cooperation can also be set in 22 outer end face of the second planetary gear
Structure further positions and anti-axial float；So accordingly, as shown in Figure 1, in the outer end of second planetary gear 22
The second recessed annular structure 221 is offered on the inside of face；The planetary wheeling assembly further includes circlip；The planet pin 23 further includes
Jump-ring slot 237 and second gear limiting section 236；The jump-ring slot 237 and second gear limiting section 236 are successively set on described
Between two gear fixed parts 233 and second bearing fixed part 234；The circlip be located in the jump-ring slot 237, and with it is described
Second recessed annular structure 221 matches.In detail, for the installation of planet pin 23 and compound planet gear, second tooth
The diameter for taking turns limiting section 236 is less than or equal to the diameter of the second gear fixed part 233.
Further, as shown in Figure 1, the diameter of the first bearing fixed part 231 is less than the first gear limiting section
235 diameter；The diameter of the second bearing fixed part 234 is less than the diameter of the second gear limiting section 236.
Wherein, explanation is given for the planet carrier 1 for assembling the planetary wheeling assembly:
As shown in Figure 2 and Figure 4, the planet carrier 1 includes the first row starboard 11, the second planet plate 12 and connecting shaft 13；Institute
It states the first row starboard 11 and is fixedly connected with the second planet plate 12 by the connecting shaft 13；
As shown in Figures 2 and 3, multiple axis holes 14, institute are offered on the first row starboard 11 and the second planet plate 12
The axis hole for stating the axis hole and the second planet plate 12 of the first row starboard 11 is oppositely arranged；Also, described 24 one end of deep groove ball bearing
Outer ring is fixed in the axis hole of the first row starboard 11, and the outer ring of 24 other end of deep groove ball bearing is fixed on described second
In the axis hole of planet plate 12.
Further, the quantity of 11 upper shaft hole of the first row starboard is identical as the quantity of the planet pin 23, and described
The quantity of two planet plates, 12 upper shaft hole is identical as the quantity of the planet pin 23.
Wherein, the planet pin is fixed in the inner hole of the compound planet gear, alternatively, the planet pin and described pair
Connection planetary gear is structure as a whole.Also, the first planetary gear and the second planetary gear may be integral structure；It is described
First planetary gear and the second planetary gear can be same inner diameter or different inner diameters；Wherein in first planetary gear and second
In the case that planetary gear is different inner diameters, first gear fixed part and second gear fixed part are equally according to the first planet tooth
Wheel and the second planetary gear different inner diameters, match with the first planetary gear and the second planetary gear.
Need to give explanation, the first gear and second gear are plastic material or metal material；The planet
Pin is machined piece or metallic sintered products；The planet carrier is machined piece, metallic sintered products or die casting.
The utility model embodiment additionally provides a kind of motor, and the motor includes above-mentioned planetary gear transmission device.Its
In, the planetary gear transmission device includes planet carrier and multiple planetary wheeling assemblies；The planetary wheeling assembly is arranged in the planet
On frame.
A kind of planetary gear transmission device provided by the utility model and a kind of motor, have the beneficial effect that
The compound planet gear of the utility model is fixedly connected with planet pin, and wherein the both ends of planet pin are provided with deep-groove ball
Bearing constitutes planetary wheeling assembly；It, can by thering is the planetary wheeling assembly of deep groove ball bearing to install in planet carrier this set
The axial float for preventing compound planet gear from generating in motor operation；So as to reduce the collision of gear and planet carrier, subtract
Few unnecessary friction, and then the loss of electric efficiency can be reduced；Bring in motor operation course can also be reduced simultaneously
Noise promotes user experience and user's viscosity.
In the above embodiments of the present invention, all emphasize particularly on different fields to the description of each embodiment, in some embodiment
The part not being described in detail, reference can be made to the related descriptions of other embodiments.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the protection scope of the utility model.
Claims (10)
1. a kind of planetary gear transmission device, which is characterized in that the planetary gear transmission device includes planet carrier (1) and multiple planets
Wheel assembly；The planetary wheeling assembly is arranged on the planet carrier (1)；
The planetary wheeling assembly includes compound planet gear, planet pin (23) and deep groove ball bearing (24)；The planet pin (23)
In the inner hole of the compound planet gear；The inner ring of the deep groove ball bearing (24) is fixed on the end of the planet pin (23)
Portion, outer ring and the planet carrier (1) of the deep groove ball bearing (24) are mutually fixed；
The compound planet gear includes first planetary gear (21) and the second planetary gear (22)；The planet pin (23) is successively
It is fixed including first bearing fixed part (231), first gear fixed part (232), second gear fixed part (233) and second bearing
Portion (234)；
The first bearing fixed part (231) and second bearing fixed part (234) are matched with the deep groove ball bearing (24)；
The inner hole of the first gear fixed part (232) and the first planetary gear (21) is interference fitted, and the second gear is fixed
The inner hole of portion (233) and second planetary gear (22) is interference fitted.
2. planetary gear transmission device according to claim 1, which is characterized in that first planetary gear (21) outer end face
Inside offer the first recessed annular structure (211)；The planet pin (23) further includes first gear limiting section (235)；
The first gear limiting section (235) be located at the first bearing fixed part (231) and first gear fixed part (232) it
Between；Also, the first gear limiting section (235) matches with the first recessed annular structure (211).
3. planetary gear transmission device according to claim 1 or 2, which is characterized in that second planetary gear (22)
The second recessed annular structure (221) is offered on the inside of outer end face；
The planetary wheeling assembly further includes circlip；The planet pin (23) further includes jump-ring slot (237) and second gear limiting section
(236)；The jump-ring slot (237) and second gear limiting section (236) be successively set on the second gear fixed part (233) and
Between second bearing fixed part (234)；The circlip be located in the jump-ring slot (237), and with second recessed annular
Structure (221) matches.
4. planetary gear transmission device according to claim 2, which is characterized in that the first gear limiting section (235)
Diameter is greater than the diameter of the first gear fixed part (232).
5. planetary gear transmission device according to claim 3, which is characterized in that the second gear limiting section (236)
Diameter is less than or equal to the diameter of the second gear fixed part (233).
6. planetary gear transmission device according to claim 1, which is characterized in that the first bearing fixed part (231)
Diameter is less than the diameter of the first gear limiting section (235)；
The diameter of the second bearing fixed part (234) is less than the diameter of the second gear limiting section (236).
7. planetary gear transmission device according to claim 1, which is characterized in that the planet carrier (1) includes the first planet
Plate (11), the second planet plate (12) and connecting shaft (13)；The first row starboard (11) and the second planet plate (12) pass through described
Connecting shaft (13) is fixedly connected；
Multiple axis holes are offered on the first row starboard (11) and the second planet plate (12), the first row starboard (11)
The axis hole of axis hole and the second planet plate (12) is oppositely arranged；Also, the outer ring of described deep groove ball bearing (24) one end is fixed on institute
In the axis hole for stating the first row starboard (11), the outer ring of deep groove ball bearing (24) other end is fixed on the second planet plate
(12) in axis hole.
8. planetary gear transmission device according to claim 7, which is characterized in that the first row starboard (11) upper shaft hole
Quantity is identical as the quantity of the planet pin (23), the quantity of the second planet plate (12) upper shaft hole and the planet pin (23)
Quantity it is identical.
9. planetary gear transmission device according to claim 1, which is characterized in that the planet pin (23) is fixed on described double
Join in planetary gear inner hole, alternatively, the planet pin (23) is structure as a whole with the compound planet gear.
10. a kind of motor, which is characterized in that the motor includes any planetary gear transmission device of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820755492.9U CN208417498U (en) | 2018-05-21 | 2018-05-21 | A kind of planetary gear transmission device and a kind of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820755492.9U CN208417498U (en) | 2018-05-21 | 2018-05-21 | A kind of planetary gear transmission device and a kind of motor |
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| Publication Number | Publication Date |
|---|---|
| CN208417498U true CN208417498U (en) | 2019-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820755492.9U Active CN208417498U (en) | 2018-05-21 | 2018-05-21 | A kind of planetary gear transmission device and a kind of motor |
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| Country | Link |
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| CN (1) | CN208417498U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513469A (en) * | 2018-05-21 | 2019-11-29 | 宁波麦思动力系统有限公司 | A kind of planetary gear transmission device and a kind of motor |
-
2018
- 2018-05-21 CN CN201820755492.9U patent/CN208417498U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513469A (en) * | 2018-05-21 | 2019-11-29 | 宁波麦思动力系统有限公司 | A kind of planetary gear transmission device and a kind of motor |
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