CN217100351U - Input transmission assembly and speed change device using same - Google Patents
Input transmission assembly and speed change device using same Download PDFInfo
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- CN217100351U CN217100351U CN202122639324.8U CN202122639324U CN217100351U CN 217100351 U CN217100351 U CN 217100351U CN 202122639324 U CN202122639324 U CN 202122639324U CN 217100351 U CN217100351 U CN 217100351U
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- planet carrier
- assembly
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Abstract
The utility model discloses an input drive assembly and use its speed change gear, it relates to and puts the motor field in. The key points of the technical scheme comprise: a planet carrier; a plurality of sets of planet gears arranged on the planet carrier along the axial direction; the gear ring is fixedly arranged and is matched with any group of planet gears; the sun shaft sleeves are matched with the planet wheels respectively; the planet carrier is used for inputting rotating speed, the sun shaft sleeve is used for outputting rotating speed, and the rotating speeds of the sun shaft sleeves are different. The utility model has the advantages of simplify the structure and reduce axial dimensions.
Description
Technical Field
The utility model relates to an in put the motor field, more specifically say that it relates to an input drive assembly and use its speed change gear.
Background
The universal application in the market at present is that the middle motor is collocated with an external variable speed or a rear hub type internal variable speed hub, the external variable speed is changed by dialing the position of an adjusting chain after being dialed, and the internal variable speed hub is shifted by dialing the angle after being dialed by a finger. However, the arrangement of the middle motor and the transmission results in a complex structure of the whole vehicle and is inconvenient to install.
In order to simplify the structure and installation of the whole vehicle, a transmission-integrated central motor is also present. For example, chinese patent publication No. CN112407135A discloses a mid-set electric motor capable of multi-gear speed change adjustment, and chinese patent publication No. CN113184106A discloses a mid-set variable speed electric motor.
Although the two mid-mounted motors integrate the speed change function, the riding vehicle needs to be actively adjusted, so that the riding experience and the comfort are still to be improved; and the speed change mechanism is used as an independent module, so that the whole volume of the motor is large, and the whole vehicle is not convenient to install.
A prior chinese patent with publication number CN208882035U discloses an automatic speed changing hub, which includes a hub shaft and at least two planetary gear sets mounted on the hub shaft, wherein the planetary gear sets include a first planetary gear set, a second planetary gear set and a clutch assembly, and a carrier of the first planetary gear set is connected with a ring gear of the second planetary gear set through a transmission part; the clutch assembly includes a first centrifugal clutch and a second centrifugal clutch.
However, the automatic transmission hub uses two-stage planetary gear sets to transmit power, which results in a complex structure, inconvenient installation and long overall axial dimension, and therefore, if the automatic transmission structure is integrated into a mid-mounted motor, the automatic transmission structure has great difficulty.
SUMMERY OF THE UTILITY MODEL
To the deficiencies of the prior art, it is an object of the present invention to provide an input drive assembly having advantages of simplified structure and reduced axial dimension.
In order to achieve the above purpose, the utility model provides a following technical scheme:
an input drive assembly comprising:
a planet carrier;
a plurality of sets of planet gears arranged on the planet carrier along the axial direction;
the gear ring is fixedly arranged and is matched with any group of planet gears; and (c) a second step of,
a plurality of sun bushings respectively matched with the planet wheels;
the planet carrier is used for inputting rotating speed, the sun shaft sleeve is used for outputting rotating speed, and the rotating speeds of the sun shaft sleeves are different.
Further, one or two power input units are arranged on the planet carrier.
Further, the outer side wall of the planet carrier is provided with a fixing ring connected with the power input unit.
Further, the power input unit is connected with the fixing ring through a fastener.
Furthermore, the planet gears comprise a second-gear planet gear and a third-gear planet gear; the sun shaft sleeve comprises a second sun shaft sleeve matched with the second planetary gear and a third sun shaft sleeve matched with the third planetary gear.
Further, the three-gear sun gear sleeve penetrates through the two-gear sun gear sleeve, and a bearing is arranged between the three-gear sun gear sleeve and the two-gear sun gear sleeve.
Furthermore, the second-gear sun shaft sleeve and the third-gear sun shaft sleeve are respectively provided with an axial limiting structure matched with the bearing.
Another object of the utility model is to provide a speed change gear, its technical scheme as follows:
a transmission device comprising:
the middle shaft is used for being connected with the pedals, and the input transmission assembly is arranged on the middle shaft;
the pedal one-way input assembly is borne between the middle shaft and the planet carrier;
the power-assisted input unit is borne on the planet carrier;
the one-way clutch assembly is borne on the planet carrier;
the second-gear centrifugal clutch assembly is connected with the second-gear sun shaft sleeve;
the three-gear centrifugal clutch assembly is connected with the three-gear sun shaft sleeve; and the number of the first and second groups,
and the one-way clutch assembly, the two-gear centrifugal clutch assembly and the three-gear centrifugal clutch assembly are respectively connected with the output transmission assembly.
To sum up, the utility model discloses following beneficial effect has:
two planet wheels are integrated on a planet carrier, and then two sun shaft sleeves are configured to serve as input transmission assemblies and are matched with two centrifugal clutch assemblies, so that an automatic three-gear structure is realized, the number of parts and assembly procedures can be reduced, the axial size is reduced, and the overall size of the motor can be reduced.
Drawings
FIG. 1 is a schematic structural view of an input drive assembly according to embodiment 1;
fig. 2 is a schematic structural view of a carrier in embodiment 1;
fig. 3 is a schematic structural view of a transmission in embodiment 2.
In the figure: 1. a middle shaft; 21. a planet carrier; 211. a fixing ring; 212. a wheel groove; 213. an inner spigot; 214. the inner ring is in one-way clutch; 22. a second planet gear; 23. a second sun gear sleeve; 24. a third-gear planet wheel; 25. a third gear sun shaft sleeve; 26. a pedal input shaft sleeve; 261. a second one-way clutch assembly; 27. a ring gear; 28. a power-assisted input unit; 29. a first one-way clutch assembly; 31. an output drum; 32. an output end cover; 4. a second-gear centrifugal clutch assembly; 5. three keep off centrifugal clutch assembly.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Example 1:
an input transmission assembly, referring to fig. 1 and 2, includes a planet carrier 21, a plurality of sets of planet gears axially arranged on the planet carrier 21, a fixedly arranged ring gear 27, and a plurality of sun bushings respectively engaged with the planet gears, wherein the ring gear 27 is engaged with any one set of planet gears; in the embodiment, the planet carrier 21 is used for inputting the rotating speed, the sun shaft sleeves are used for outputting the rotating speed, and the rotating speeds of the plurality of sun shaft sleeves are different; the input transmission assembly in the embodiment realizes the integration of a plurality of groups of planetary gear mechanisms, and simultaneously utilizes the extension type sun shaft sleeve to output the rotating speed, thereby simplifying the structure and effectively reducing the axial size.
Referring to fig. 1 and 2, the planet carrier 21 is provided with one or two power input units; specifically, in the embodiment, the planet carrier 21 is provided with two power input units, when the input transmission assembly is applied to a middle-mounted motor, one power input unit is used for receiving pedal power, and the other power input unit is used for receiving motor power; in other alternative embodiments, if the input drive assembly is used in an automatic internal shift hub, the planet carrier 21 may be provided with a power input unit.
Referring to fig. 1 and 2, the power input unit in the present embodiment includes a power input unit 28, and the outer side wall of the planet carrier 21 is provided with a fixing ring 211 connected to the power input unit 28, and the power input unit 28 and the fixing ring 211 are connected by a fastener (e.g., a bolt); specifically, the fixing ring 211 is integrally formed with the carrier 21 in this embodiment, so that the structure and the assembly process can be simplified; of course, in other alternative embodiments, the fixed ring 211 and the planet carrier 21 may also be in a separate structure, and are not limited herein; in this embodiment, one end of the carrier 21 is provided with an inner spigot 213, through which inner spigot 213 another power input unit can be connected.
Referring to fig. 1 and fig. 2, specifically, the planetary gears in this embodiment include two-gear planetary gears 22 and three-gear planetary gears 24, where the ring gear 27 is engaged with the three-gear planetary gears 24, and the planetary carrier 21 is provided with grooves 212 engaged with the two-gear planetary gears 22 and the three-gear planetary gears 24, respectively; in the present embodiment, the second-gear planet wheels 22 and the third-gear planet wheels 24 share a planet shaft, that is, one planet shaft passes through one second-gear planet wheel 22 and one third-gear planet wheel 24 at the same time, so that the assembly is convenient; the sun shaft sleeve comprises a second gear sun shaft sleeve 23 matched with the second gear planet wheels 22 and a third gear sun shaft sleeve 25 matched with the third gear planet wheels 24; the third sun gear sleeve 25 penetrates through the second sun gear sleeve 23, the middle shaft 1 penetrates through the middle of the third sun gear sleeve 25, and bearings are arranged between the middle shaft 1 and the third sun gear sleeve 25 and between the third sun gear sleeve 25 and the second sun gear sleeve 23, preferably, the bearings are needle bearings, so that the radial size can be reduced.
Referring to fig. 1, the second sun gear sleeve 23 and the third sun gear sleeve 25 are respectively provided with an axial limiting structure matched with a bearing; specifically, the second sun gear sleeve 23 inside wall is provided with a limit ring in this embodiment, and the third sun gear sleeve 25 outside wall and inside wall are provided with limit steps respectively, so as to axially limit the bearing.
Example 2:
a speed change device, refer to fig. 2 and 3, it includes the middle shaft 1 used for connecting with pedal, there are input drive assemblies in embodiment 1 on the middle shaft 1, and the output drive assembly; the planet carrier 21 is respectively provided with a power-assisted input unit 28 and a first one-way clutch assembly 29, and a pedal one-way input assembly is arranged between the planet carrier 21 and the middle shaft 1; the second gear sun shaft sleeve 23 is connected with a second gear centrifugal clutch assembly 4, and the third gear sun shaft sleeve 25 is connected with a third gear centrifugal clutch assembly 5; the first one-way clutch assembly 29, the second-gear centrifugal clutch assembly 4 and the third-gear centrifugal clutch assembly 5 are respectively connected with the output transmission assembly; two keep off centrifugal clutch subassembly 4 and three keep off centrifugal clutch subassembly 5 at epaxial integration in this embodiment, can realize automatic three-gear variable speed, with speed change gear when being applied to put the motor in, with helping hand input unit 28 with helping hand motor mechanism be connected can to can optimize ride experience, increase the travelling comfort, can reduce the volume of putting the motor in addition, simplify whole car structure and installation.
Referring to fig. 2 and 3, in the present embodiment, the first one-way clutch assembly 29 includes a one-way clutch inner 214 integrally formed on the planet carrier 21, specifically, in the present embodiment, the first one-way clutch assembly 29 is a ratchet and pawl assembly, and the one-way clutch inner 214 is a pawl seat, and the one-way clutch inner 214 is integrally formed on the planet carrier 21, so that the number of parts and the assembly process can be reduced; the pedal one-way input assembly in this embodiment includes a pedal input shaft sleeve 26 and a second one-way clutch assembly 261 disposed between the pedal input shaft sleeve 26 and the inner spigot 213 of the planet carrier 21; specifically, the pedal input shaft sleeve 26 is sleeved on the central shaft 1, and the central shaft 1 and the pedal input shaft sleeve 26 are in spline fit to realize linkage; when the bicycle is pedaled forwards, the middle shaft 1 drives the planet carrier 21 to rotate through the pedal input shaft sleeve 26 and the second one-way clutch component 261, and when the bicycle is pedaled backwards, the middle shaft 1 cannot drive the planet carrier 21 to rotate through the second one-way clutch component 261.
Referring to fig. 2 and 3, the output transmission assembly in this embodiment includes an output cylinder 31 and an output end cover 32 connected to the output cylinder 31, an axially extending section of the output end cover 32 is used for connecting a fluted disc (not shown in the drawings) through which power output is realized; the first one-way clutch assembly 29 is arranged between the planet carrier 21 and the output cylinder 31, so that the rotating speed of the planet carrier 21 is directly transmitted to the output cylinder 31 through the first one-way clutch assembly 29 in the first gear state; the second-gear centrifugal clutch assembly 4 and the third-gear centrifugal clutch assembly 5 are respectively arranged between the second-gear sun shaft sleeve 23 and the output barrel 31, so that in the second-gear state, the rotating speed of the planet carrier 21 is transmitted to the output barrel 31 through the second-gear sun shaft sleeve 23 and the second-gear centrifugal clutch assembly 4, at the moment, the rotating speed of the output barrel 31 is greater than that of the planet carrier 21, and the first one-way clutch assembly 29 is in an overrunning state; in the third gear state, the rotational speed of the planet carrier 21 is transmitted to the output barrel 31 through the third gear sun bushing 25 and the third gear centrifugal clutch assembly 5, and at this time, the rotational speed of the output barrel 31 is greater than the rotational speeds of the planet carrier 21 and the second gear sun bushing 23, and both the first one-way clutch assembly 29 and the second gear centrifugal clutch assembly 4 are in the overrunning state.
Referring to fig. 3, in the present embodiment, the second-gear centrifugal clutch assembly 4 and the third-gear centrifugal clutch assembly 5 both implement state conversion according to the output speed, that is, the second-gear centrifugal clutch assembly 4 and the third-gear centrifugal clutch assembly 5 both implement state conversion according to the speed of the output barrel 31, thereby implementing automatic gear shifting; of course, in other alternative embodiments, the centrifugal clutch assembly may also implement a change of state based on the input speed, and is not limited herein.
Claims (8)
1. An input drive assembly, comprising:
a planet carrier;
a plurality of sets of planet gears arranged on the planet carrier along the axial direction;
the gear ring is fixedly arranged and is matched with any group of planet gears; and the number of the first and second groups,
a plurality of sun bushings respectively matched with the planet wheels;
the planet carrier is used for inputting rotating speed, the sun shaft sleeve is used for outputting rotating speed, and the rotating speeds of the sun shaft sleeves are different.
2. The input drive assembly of claim 1, wherein: one or two power input units are arranged on the planet carrier.
3. The input drive assembly of claim 2, wherein: the outer side wall of the planet carrier is provided with a fixing ring connected with the power input unit.
4. The input drive assembly of claim 3, wherein: the power input unit is connected with the fixing ring through a fastening piece.
5. The input drive assembly of claim 1, wherein: the planet gears comprise a second-gear planet gear and a third-gear planet gear; the sun shaft sleeve comprises a second sun shaft sleeve matched with the second planetary gear and a third sun shaft sleeve matched with the third planetary gear.
6. The input drive assembly of claim 5, wherein: the three-gear solar axle sleeve penetrates through the two-gear solar axle sleeve, and a bearing is arranged between the three-gear solar axle sleeve and the two-gear solar axle sleeve.
7. The input drive assembly of claim 6, wherein: and the second-gear sun shaft sleeve and the third-gear sun shaft sleeve are respectively provided with an axial limiting structure matched with the bearing.
8. A transmission device, characterized by comprising:
a bottom bracket for connection to a foot rest, said bottom bracket having the input drive assembly of claim 5 disposed thereon;
the pedal one-way input assembly is borne between the middle shaft and the planet carrier;
the power-assisted input unit is borne on the planet carrier;
the one-way clutch assembly is borne on the planet carrier;
the second-gear centrifugal clutch assembly is connected with the second-gear sun shaft sleeve;
the three-gear centrifugal clutch assembly is connected with the three-gear sun shaft sleeve; and the number of the first and second groups,
and the one-way clutch assembly, the two-gear centrifugal clutch assembly and the three-gear centrifugal clutch assembly are respectively connected with the output transmission assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122639324.8U CN217100351U (en) | 2021-10-29 | 2021-10-29 | Input transmission assembly and speed change device using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122639324.8U CN217100351U (en) | 2021-10-29 | 2021-10-29 | Input transmission assembly and speed change device using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217100351U true CN217100351U (en) | 2022-08-02 |
Family
ID=82589141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122639324.8U Active CN217100351U (en) | 2021-10-29 | 2021-10-29 | Input transmission assembly and speed change device using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217100351U (en) |
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2021
- 2021-10-29 CN CN202122639324.8U patent/CN217100351U/en active Active
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