CN114228897B - A centrifugal clutch assembly integrated structure and automatic speed-changing hub with large speed ratio - Google Patents
A centrifugal clutch assembly integrated structure and automatic speed-changing hub with large speed ratio Download PDFInfo
- Publication number
- CN114228897B CN114228897B CN202111422832.9A CN202111422832A CN114228897B CN 114228897 B CN114228897 B CN 114228897B CN 202111422832 A CN202111422832 A CN 202111422832A CN 114228897 B CN114228897 B CN 114228897B
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- clutch
- inner ring
- centrifugal
- hub
- ring part
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M11/00—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels
- B62M11/04—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio
- B62M11/14—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with planetary gears
- B62M11/16—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with planetary gears built in, or adjacent to, the ground-wheel hub
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M11/00—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels
- B62M11/04—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio
- B62M11/14—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with planetary gears
- B62M11/18—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with planetary gears with a plurality of planetary gear units
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Abstract
The invention discloses a centrifugal clutch assembly integrated structure and an automatic transmission hub with a large transmission ratio, and relates to the field of speed changing devices. The technical scheme is characterized by comprising a first clutch inner ring part, a first clutch driving piece and a first buffer frame, a second clutch inner ring part, a second clutch driving piece and a second buffer frame, wherein the first clutch inner ring part and the second clutch inner ring part are fixedly connected or integrally formed to form an integrated inner ring. The invention can reduce the number of parts and assembly procedures, reduce the production cost and the detection cost, improve the reliability and the stability, simplify the structure, optimize the size, realize the automatic switching of three gears by utilizing the output speed and improve the speed ratio, thereby further optimizing the riding experience.
Description
Technical Field
The invention relates to the field of speed changing devices, in particular to a centrifugal clutch assembly integrated structure and an automatic speed changing hub with a large speed change ratio.
Background
The general internal speed change mechanism utilizes centrifugal force to realize automatic speed change, when the centrifugal block is thrown away to realize automatic upshift after a certain pedal frequency speed is reached, when the pedal frequency speed is reduced below a speed change point, the centrifugal block is contracted to realize automatic downshift, for example, as shown in Chinese patent with the grant publication number CN 208882034U.
However, in the case of a vehicle employing the above-described transmission mechanism, if the rider does not want to step on the vehicle at a high speed (greater than the shift point) or if the rider does not need to step on the vehicle at a downhill, the transmission mechanism may automatically shift down due to a decrease in the rider's step-on speed, and if the vehicle remains at a high speed (greater than the shift point) after sliding for a certain distance, the rider needs to bring the step-on speed to the shift point for a short time after stepping on the vehicle again to automatically shift up the transmission mechanism. Under such circumstances automatic downshifting of the transmission will affect the riding experience and an increase in the shift frequency will easily lead to failure of the transmission affecting its life.
The prior Chinese patent with publication number CN113007295A discloses a speed change mechanism for realizing automatic gear shifting by utilizing the output speed.
However, the transmission mechanism in the above patent has only two gears, and the riding experience is still to be improved after the transmission mechanism is mounted on a vehicle. The gear of the transmission mechanism is increased, and the problems of complex assembly, high cost, reliability influence and the like caused by the large number of parts and how to increase the speed ratio are also considered.
Disclosure of Invention
Aiming at the defects existing in the prior art, one of the purposes of the invention is to provide a centrifugal clutch assembly integrated structure which can reduce the number of parts and assembly procedures, reduce the production cost and the detection cost, improve the reliability and the stability, simplify the structure and optimize the size.
In order to achieve the above purpose, the present invention provides the following technical solutions:
A centrifugal clutch assembly integrated structure comprising:
a first clutch inner ring part, a first clutch driving piece and a first buffer frame, and
The second clutch inner ring part, the second clutch driving piece and the second buffer frame;
the first clutch inner ring part and the second clutch inner ring part are fixedly connected or integrally formed to form an integrated inner ring.
Further, a fixing plate is integrally formed on the outer side wall of the integrated inner ring, a first centrifugal throwing block and a second centrifugal throwing block are respectively arranged on the fixing plate, and the first centrifugal throwing block and the second centrifugal throwing block are respectively located on two sides of the fixing plate.
Further, a rotating shaft which simultaneously penetrates through the first centrifugal throwing block and the second centrifugal throwing block is arranged on the fixing plate.
Further, a first driving plate matched with the first centrifugal throwing block is sleeved on the outer side wall of the first clutch inner ring portion, a limiting step matched with the first driving plate is arranged on the outer side wall of the first clutch inner ring portion, a limiting clamp spring is sleeved on the outer side wall of the first clutch inner ring portion, and the limiting clamp spring is matched with the limiting step to axially limit the first driving plate.
Further, a first driving arm matched with the first driving plate is arranged on the first centrifugal throwing block.
Another object of the present invention is to provide an automatic transmission hub with a large gear ratio, which can realize automatic switching of three gear positions by using an output speed, can further improve riding experience, and can improve the gear ratio.
In order to achieve the above purpose, the present invention provides the following technical solutions:
an automatic speed change hub with a large speed change ratio comprises a hub barrel, wherein a first planetary gear assembly, a second planetary gear assembly and the centrifugal clutch assembly integrated structure are respectively arranged in the hub barrel, and the centrifugal clutch assembly integrated structure is positioned between the first planetary gear assembly and the second planetary gear assembly;
the fixing plate is penetrated with a fastener connected with the inner end surface of the hub barrel.
The first planetary gear assembly comprises a first planetary carrier, a first gear clutch assembly is arranged between the first planetary carrier and the hub drum, a first planetary gear is arranged on the first planetary carrier, and a first clutch outer ring matched with the first buffer carrier is meshed with the first planetary gear;
The second planetary gear assembly comprises a second planetary carrier, a second clutch outer ring part, a second planetary gear and a third planetary gear, wherein the second clutch outer ring part is arranged on the second planetary carrier and matched with the second buffer carrier;
and a transmission shaft sleeve is arranged between the sun shaft sleeve and the first planet carrier.
Further, the second clutch outer ring portion and the second planet carrier are integrally formed.
Further, the inner side wall of the hub barrel is provided with a plurality of fixing bosses which are arranged at intervals along the circumferential direction, and the fixing plates are connected to the end faces of the fixing bosses through the fasteners.
Further, the automatic speed change hub with the large speed change ratio further comprises a main shaft, a first sun wheel meshed with the first planet wheel is arranged on the main shaft, the second sun wheel is fixedly arranged on the main shaft, and a speed measuring assembly is arranged between the main shaft and the hub barrel.
In summary, the invention has the following beneficial effects:
1. The integrated inner ring formed integrally is adopted, so that the number of parts and assembly procedures can be reduced, the production cost and the detection cost are reduced, the reliability and the stability are improved, the structure can be simplified, and the size can be optimized;
2. the structure is compact, the layout is reasonable, the axial size and the radial size of the automatic speed change hub can be effectively controlled, and the volume is reduced;
3. the centrifugal driving assembly is controlled by adopting the output speed of the power output unit, so that riding experience can be improved, gear shifting frequency is reduced, and the service life of the automatic speed change hub is prolonged;
4. the second planetary gear assembly adopts a WW type planetary gear structure, so that the speed change ratio of three gears can be improved, and riding experience is optimized.
Drawings
FIG. 1 is a cross-sectional view of an integrated structure of a centrifugal clutch assembly according to embodiment 1;
FIG. 2 is a schematic structural diagram showing an integrated structure of a centrifugal clutch assembly according to embodiment 1;
FIG. 3 is a schematic diagram of a centrifugal clutch assembly according to a second embodiment of the present invention;
fig. 4 is a sectional view of an automatic transmission drum of a large gear ratio in embodiment 2;
Fig. 5 is a schematic structural view of the flower drum of example 2.
1, Integrating an inner ring; 11, a first clutch inner ring part, 12, a second clutch inner ring part, 13, a fixing plate, 21, a first clutch driving piece, 22, a first buffer frame, 23, a first driving plate, 24, a first centrifugal throwing block, 25, a first driving arm, 31, a second clutch driving piece, 32, a second buffer frame, 33, a second driving plate, 34, a second centrifugal throwing block, 35, a second driving arm, 4, a limit clamping spring, 41, a yielding protrusion part, 5, a main shaft, 51, a threading hole, 61, a first planet carrier, 62, a first planet wheel, 63, a first sun wheel, 64, a first clutch outer ring, 65, a first gear clutch assembly, 66, a tooth sheet, 71, an driving sleeve, 72, a sun sleeve, 731, a second planet wheel, 732, a third planet wheel, 74, a second sun wheel, 75, a second planet carrier, 751, a second clutch outer ring part, 8, a flower drum, 81, a fixing boss, 91, a fixing bracket, 92 and a Hall assembly.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explanation of the present invention and is not to be construed as limiting the present invention, and modifications to the present embodiment, which may not creatively contribute to the present invention as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present invention.
Example 1:
The centrifugal clutch assembly integrated structure comprises a first clutch inner ring part 11, a first clutch driving piece 21, a first buffer frame 22, a second clutch inner ring part 12, a second clutch driving piece 31 and a second buffer frame 32, wherein the first clutch inner ring part 11 and the second clutch inner ring part 12 are fixedly connected or integrally formed to form an integrated inner ring 1, preferably, the integrated inner ring 1 is integrally formed in the embodiment, so that the number of parts and assembly procedures can be reduced, the production cost and the detection cost can be reduced, the reliability and the stability of work can be improved, the structure can be simplified, the size can be optimized, for example, the axial size can be reduced, and of course, the first clutch inner ring part 11 and the second clutch inner ring part 12 can be fixedly connected into a whole in other alternative embodiments by welding, bolting or clamping and the like, and the integrated inner ring 1 is not limited.
Referring to fig. 1 to 3, specifically, in this embodiment, a fixing plate 13 is integrally formed on an outer side wall of an inner ring 1, and the fixing plate 13 is located between a first clutch inner ring portion 11 and a second clutch inner ring portion 12, a first centrifugal fling 24 and a second centrifugal fling 34 are respectively disposed on the fixing plate 13, and the first centrifugal fling 24 and the second centrifugal fling 34 are respectively disposed on two sides of the fixing plate 13, in this embodiment, the inner ring 1 is integrally formed, so that the first centrifugal fling 24 and the second centrifugal fling 34 can be disposed on the fixing plate 13, and the structure can be simplified, specifically, four openings are disposed on the fixing plate 13 in this embodiment, so that the fixing plate 13 includes four fixing support plates, wherein one side of two opposite fixing support plates is respectively disposed with the first centrifugal fling 24, and the other side is respectively disposed with the second centrifugal fling 34, and in this embodiment, the fixing support plates are disposed with a rotating shaft passing through the first centrifugal fling 24 and the second centrifugal fling 34 at the same time, so that the structure can be simplified, and the installation is convenient.
Referring to fig. 1 to 3, specifically, a first driving plate 23 matched with a first centrifugal slinger 24 is sleeved on the outer side wall of a first clutch inner ring portion 11, a limiting step matched with the first driving plate 23 is arranged on the outer side wall of the first clutch inner ring portion 11, a limiting clamp spring 4 is sleeved on the outer side wall of the first clutch inner ring portion 11, axial limiting of the first driving plate 23 is achieved through matching of the limiting clamp spring 4 and the limiting step, specifically, a yielding protrusion 41 matched with a first clutch driving piece 21 is arranged on the limiting clamp spring 4, the yielding protrusion 41 enables the first clutch driving piece 21 to smoothly spring, a first driving arm 25 matched with the first driving plate 23 is arranged on the first centrifugal slinger 24 in the embodiment, a yielding hole matched with the first driving arm 25 is formed in the fixing plate 13, a connecting structure between the first centrifugal slinger 24 and the fixing plate 13, a connecting structure between the first driving arm 25 and the first driving plate 23, a connecting structure between the first driving arm 25 and the first driving arm 23 and a second driving arm 33 are not used for limiting the two driving plates, and the number of the two driving plates 33 are integrated with each other, and the two driving assemblies are formed in the two driving plates 33, and the two driving assemblies are integrated with the two driving plates are respectively, and the two driving assemblies are used for limiting the two driving assemblies are 4 and are integrated, and the two driving assemblies are 35 are used for limiting and are arranged in the driving and are arranged in the two driving assemblies and are 23 and are used for driving one and the driving assemblies and are used for driving and are 35.
Example 2:
1-5, the automatic transmission hub with a large transmission ratio comprises a hub drum 8, wherein a first planetary gear assembly, a second planetary gear assembly and a centrifugal clutch assembly integrated structure in the embodiment 1 are respectively arranged in the hub drum 8, the centrifugal clutch assembly integrated structure is positioned between the first planetary gear assembly and the second planetary gear assembly, a fixing piece connected with the inner end surface of the hub drum 8 is arranged on a fixing plate 13 in a penetrating manner, three gears are formed by arranging two groups of planetary gear assemblies in the embodiment, and automatic switching of the three gears is realized according to the rotating speed of a power output unit, so that riding experience can be further improved.
Referring to fig. 1 to 5, specifically, the first planetary gear assembly in this embodiment includes a first planet carrier 61, a first gear clutch assembly 65 is disposed between the first planet carrier 61 and the hub drum 8, a first planet gear 62 is disposed on the first planet carrier 61, the first planet gear 62 is meshed with a first clutch outer ring 64 matched with the first buffer carrier 22, the second planetary gear assembly includes a second planet carrier 75, a second clutch outer ring portion 751 matched with the second buffer carrier 32 is disposed on the second planet carrier 75, a second planet wheel 731 and a third planet wheel 732 are disposed on the second planet carrier 75, the second planet wheel 731 is fixedly connected with or integrally formed with the third planet wheel 732, a sun shaft sleeve 72 is meshed with the second planet wheel 731, a second planet wheel 74 fixed with the third planet wheel 732 is meshed with the sun shaft sleeve 72, a driving shaft sleeve 71 is disposed between the sun shaft sleeve 72 and the first planet carrier 61, preferably, the second planet wheel 731 and the third planet wheel 732 are integrally formed with the second planet carrier 75, the second clutch outer ring portion 751 is integrally formed with the second planet carrier 75, and the second planetary gear assembly in this embodiment adopts a WW speed reduction structure capable of improving the speed ratio.
Referring to fig. 1 to 5, in the present embodiment, four fixing bosses 81 uniformly distributed in the circumferential direction are provided on the inner side wall of the drum 8, and the fixing plate 13 is connected to the end surface of the fixing boss 81 by fastening bolts, and the fixing bosses 81 are provided on the inner side wall of the drum 8 to be connected to the fixing plate 13, so that the installation space for the first centrifugal slinger 24 can be increased, and in the present embodiment, the first centrifugal slinger 24 is located radially outside the first clutch outer ring 64, and the second centrifugal slinger 34 is located radially outside the second clutch outer ring portion 751, so that the axial dimension can be reduced.
Referring to fig. 4, specifically, in this embodiment, the first planet carrier 61 is provided with a toothed plate 66 for receiving the input rotation speed of the foot, and the first planet carrier 61 is connected with the sun gear shaft 72 through the driving shaft 71, so that the rotation speeds of the toothed plate 66, the first planet carrier 61, the driving shaft 71 and the sun gear shaft 72 are the same, and in this embodiment, circumferential linkage is implemented between the first planet carrier 61 and the driving shaft 71 and between the sun gear shaft 72 and the driving shaft 71 through spline fit, so that assembly is convenient, and in other alternative embodiments, the driving shaft 71 and the first planet carrier 61 or the sun gear shaft 72 may be integrally formed, which is not limited herein.
Referring to fig. 4, the automatic transmission hub with large transmission ratio in the present embodiment further includes a main shaft 5, a first sun gear 63 meshed with the first planet gear 62 is disposed on the main shaft 5, and a second sun gear 74 is fixedly disposed on the main shaft 5, specifically, the first sun gear 63 and the main shaft 5 are fixed and fixed by key slot matching in the present embodiment, and the second sun gear 74 and the main shaft 5 are integrally formed
Referring to fig. 4, a speed measuring assembly is disposed between the spindle 5 and the drum 8 in this embodiment, so as to measure the output rotation speed of the drum 8, specifically, the speed measuring assembly in this embodiment includes a fixing bracket 91 and a hall assembly 92 disposed on the fixing bracket 91, a magnetic steel (not shown in the drawing) matched with the hall assembly 92 is embedded on the inner end surface of the drum 8, the fixing bracket 91 is matched with the spindle 5 through a key slot to fix the spindle 5, and a threading hole 51 matched with the hall assembly 92 is formed in the spindle 5, in this embodiment, the output rotation speed of the drum 8 is detected through the speed measuring assembly, so that a rider can know the riding state conveniently, and the riding experience is improved.
The working principle is as follows:
The rotation speed of the pedaling power is transmitted to the tooth plate 66, the tooth plate 66 drives the first planet carrier 61 and the sun shaft sleeve 72 to rotate, the first sun gear 63 and the second sun gear 74 are fixed, the first planet carrier 61 drives the first clutch outer 64 to rotate through the first planet gears 62, the sun shaft sleeve 72 drives the second clutch outer 751 on the second planet carrier 75 to rotate through the second planet gears 731 and the third planet gears 732, the rotation speed of the first clutch outer 64 is larger than that of the first planet carrier 61, and the rotation speed of the second clutch outer 751 is larger than that of the first clutch outer 64.
In the first gear, the first centrifugal slinger 24 and the second centrifugal slinger 34 are in a contracted state, so that the rotation speeds of the first clutch outer ring 64 and the second clutch outer ring 751 cannot be transmitted to the flower drum 8, and at the moment, the first planet carrier 61 drives the flower drum 8 to rotate through the first gear clutch assembly 65, so that power output is achieved, and a first gear speed ratio is 1:1 in the embodiment.
When the rotation speed of the hub drum 8 reaches the second gear speed change point, the first centrifugal throwing block 24 rotates to a throwing state under the action of centrifugal force, the rotation speed of the first clutch outer ring 64 is transmitted to the hub drum 8 to realize power output, the second gear speed change ratio in the embodiment is 1:1.47, at the moment, the rotation speed of the hub drum 8 is greater than the rotation speed of the first planet carrier 61, the first gear clutch assembly 65 is in an overrunning state, and the second centrifugal throwing block 34 is still in a contracted state.
In the third gear, after the rotation speed of the drum 8 reaches the third gear speed change point, the second centrifugal throwing block 34 rotates to a throwing state under the action of centrifugal force, so that the rotation speed of the second clutch outer ring portion 751 is transmitted to the drum 8 to realize power output, and the second gear speed change ratio in the embodiment is 1:2.15, at this time, the rotation speed of the drum 8 is greater than the rotation speeds of the first planet carrier 61 and the first clutch outer ring 64, the first gear clutch assembly 65 is in an overrun state, and the first clutch inner ring portion 11, the first clutch driving piece 21 and the first buffer carrier 22 are also in an overrun state.
Meanwhile, the second planetary gear assembly adopts a WW type planetary gear structure, so that the speed ratio of three gears exceeds 1:2, and the output of a large speed ratio is realized.
Claims (6)
1. A centrifugal clutch assembly integrated structure comprising:
a first clutch inner ring part, a first clutch driving piece and a first buffer frame, and
The second clutch inner ring part, the second clutch driving piece and the second buffer frame;
The method is characterized in that:
the first clutch inner ring part and the second clutch inner ring part are fixedly connected or integrally formed to form an integrated inner ring;
the outer side wall of the integrated inner ring is integrally formed with a fixed plate, and a first centrifugal throwing block and a second centrifugal throwing block are respectively arranged on the fixed plate;
the fixed plate is provided with a rotating shaft which passes through the first centrifugal throwing block and the second centrifugal throwing block simultaneously;
The outer side wall of the first clutch inner ring part is sleeved with a first driving plate matched with the first centrifugal throwing block, the outer side wall of the first clutch inner ring part is provided with a limiting step matched with the first driving plate, the outer side wall of the first clutch inner ring part is sleeved with a limiting clamp spring, and the limiting clamp spring is matched with the limiting step to axially limit the first driving plate.
2. The centrifugal clutch assembly integrated structure according to claim 1, wherein the first centrifugal slinger is provided with a first driving arm matched with the first driving plate.
3. An automatic speed change hub with a large speed change ratio is characterized by comprising a hub barrel, wherein a first planetary gear assembly, a second planetary gear assembly and the centrifugal clutch assembly integrated structure as set forth in claim 1 or 2 are respectively arranged in the hub barrel, and the centrifugal clutch assembly integrated structure is positioned between the first planetary gear assembly and the second planetary gear assembly;
the fixing plate is penetrated with a fastener connected with the inner end surface of the hub barrel;
The first planetary gear assembly comprises a first planet carrier, a first gear clutch assembly is arranged between the first planet carrier and the hub drum, a first planet wheel is arranged on the first planet carrier, and a first clutch outer ring matched with the first buffer carrier is meshed with the first planet wheel;
The second planetary gear assembly comprises a second planetary carrier, a second clutch outer ring part, a second planetary gear and a third planetary gear, wherein the second clutch outer ring part is arranged on the second planetary carrier and matched with the second buffer carrier;
and a transmission shaft sleeve is arranged between the sun shaft sleeve and the first planet carrier.
4. The automatic transmission hub with a large transmission ratio according to claim 3, wherein said second clutch outer portion is integrally formed with the second carrier.
5. The automatic transmission hub with a large transmission ratio according to claim 3, wherein the inner side wall of the hub barrel is provided with a plurality of fixing bosses arranged at intervals in the circumferential direction, and the fixing plates are connected to the end faces of the fixing bosses through the fasteners.
6. The automatic transmission hub with a large speed ratio according to claim 3, further comprising a main shaft, wherein a first sun wheel meshed with the first planet wheel is arranged on the main shaft, the second sun wheel is fixedly arranged on the main shaft, and a speed measuring assembly is arranged between the main shaft and the hub.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111422832.9A CN114228897B (en) | 2021-11-26 | 2021-11-26 | A centrifugal clutch assembly integrated structure and automatic speed-changing hub with large speed ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111422832.9A CN114228897B (en) | 2021-11-26 | 2021-11-26 | A centrifugal clutch assembly integrated structure and automatic speed-changing hub with large speed ratio |
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| Publication Number | Publication Date |
|---|---|
| CN114228897A CN114228897A (en) | 2022-03-25 |
| CN114228897B true CN114228897B (en) | 2025-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111422832.9A Active CN114228897B (en) | 2021-11-26 | 2021-11-26 | A centrifugal clutch assembly integrated structure and automatic speed-changing hub with large speed ratio |
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| CN (1) | CN114228897B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN214690026U (en) * | 2021-04-20 | 2021-11-12 | 八方电气(苏州)股份有限公司 | Dual-mode two-speed hub motor |
| CN216734649U (en) * | 2021-11-26 | 2022-06-14 | 八方电气(苏州)股份有限公司 | Automatic speed change hub of centrifugal clutch assembly integrated structure and big gear ratio |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3973451A (en) * | 1974-12-06 | 1976-08-10 | Shimano Industrial Company, Limited | Five speed transmission hub for bicycles |
| CN113022776A (en) * | 2021-04-20 | 2021-06-25 | 八方电气(苏州)股份有限公司 | Two-speed in-wheel motor and vehicle that can shift gears automatically |
| CN113022775A (en) * | 2021-04-20 | 2021-06-25 | 八方电气(苏州)股份有限公司 | Hub motor integrated with speed change mechanism |
-
2021
- 2021-11-26 CN CN202111422832.9A patent/CN114228897B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN214690026U (en) * | 2021-04-20 | 2021-11-12 | 八方电气(苏州)股份有限公司 | Dual-mode two-speed hub motor |
| CN216734649U (en) * | 2021-11-26 | 2022-06-14 | 八方电气(苏州)股份有限公司 | Automatic speed change hub of centrifugal clutch assembly integrated structure and big gear ratio |
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| CN114228897A (en) | 2022-03-25 |
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