CN106985962B - Single-wheel drive three-gear speed change device - Google Patents
Single-wheel drive three-gear speed change device Download PDFInfo
- Publication number
- CN106985962B CN106985962B CN201710331580.6A CN201710331580A CN106985962B CN 106985962 B CN106985962 B CN 106985962B CN 201710331580 A CN201710331580 A CN 201710331580A CN 106985962 B CN106985962 B CN 106985962B
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- wheel
- pawl
- gear
- planet carrier
- planetary transmission
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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
- B62M11/18—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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- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
Abstract
The invention discloses a single-wheel drive three-gear speed change device, which comprises: center pin, wheel hub, power input piece, gearshift and planetary transmission, planetary transmission includes: a first planetary transmission and a second planetary transmission, the first planetary transmission comprising: first sun gear, first planet carrier, first planet wheel and first ring gear, second planetary transmission includes: second centre wheel, second planet carrier, second planet wheel and second ring gear, the centre shaft is fixed mutually with the frame, first planet carrier and second ring gear integrated into one piece or fixed connection, power input member and one of them part fixed connection in first planet carrier, second planet carrier, first ring gear and the four parts of second ring gear, gearshift includes: ratchet, pawl frame and pawl, form sliding connection between pawl frame and the wheel hub to shift gears stability has been improved greatly.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of bicycles, in particular to a single-wheel drive three-gear speed change device.
[ background of the invention ]
The bicycle speed changer is divided into an inner speed changer and an outer speed changer, the outer speed changer adopts an open chain mechanism as a transmission system, a chain is changed to different flywheels by shifting a gear shifter arranged in front of a bicycle to realize different chain transmission ratios, the outer speed changer is exposed outside, so the outer speed changer is easy to rust and easy to be interfered by external force, regular maintenance is often needed, the inner speed changer mainly adopts a planetary gear mechanism as a transmission main body, the inner speed changer is sealed inside a hub and protected by multiple layers of special sealing materials, rainwater, dust, oil dirt and the like cannot enter, the regular maintenance is not needed, and the maintenance-free advantage is realized.
[ summary of the invention ]
In order to solve the problems, the invention aims to provide a single-wheel drive three-gear speed change device which is compact in structure and good in gear shifting stability.
In order to achieve the purpose, the invention adopts the technical scheme that: a single-wheel drive three-speed transmission comprising: center pin, wheel hub and set up power input spare, gearshift between center pin and wheel hub and two sets of planetary transmission who sets up side by side, planetary transmission includes: a first planetary transmission and a second planetary transmission, the first planetary transmission comprising: first sun gear, first planet carrier, first planet wheel and first ring gear, second planetary transmission includes: second centre wheel, second planet carrier, second planet wheel and second ring gear, first centre wheel and center pin integrated into one piece or fixed connection, second centre wheel and center pin integrated into one piece or fixed connection, the center pin is fixed mutually with the frame, first planet carrier and second ring gear integrated into one piece or fixed connection, power input spare and one of them part fixed connection in first planet carrier, second planet carrier, first ring gear and the four parts of second ring gear, gear shifting mechanism includes: the ratchet wheel comprises a first ratchet wheel arranged on the first gear ring, a second ratchet wheel arranged on the second gear ring and a third ratchet wheel arranged on the second planet carrier.
Preferably, a single-wheel drive three-speed transmission in the present invention is further configured to: and a plurality of guide rods matched with the pawl rack are arranged in the hub and are arranged along the axial direction of the central shaft.
Preferably, a single-wheel drive three-speed transmission in the present invention is further configured to: the pawl frame is arranged in a circular ring shape, a plurality of openings are formed in the pawl frame, and the pawl is accommodated in the openings and is installed on the pawl frame through pins.
Preferably, a single-wheel drive three-speed transmission in the present invention is further configured to: the elastic piece is a spring, a torsion spring or a spring sheet.
Preferably, a single-wheel drive three-speed transmission in the present invention is further configured to: the pawl component is provided with a pawl part matched with the ratchet wheel, and the pawl part is provided with a meshing guide surface.
Preferably, a single-wheel drive three-speed transmission in the present invention is further configured to: the one end of center pin is equipped with first end cover and first lock nut, be connected through bearing or ball between first end cover and the power input piece, be connected through bearing or ball between power input piece and the first lock nut, the other end of center pin is equipped with second end cover and second lock nut, be connected through bearing or ball between second end cover and the second lock nut.
Preferably, a single-wheel drive three-speed transmission in the present invention is further configured to: the first central wheel and the second central wheel are integrally formed or fixedly connected.
Compared with the prior art, the invention has the following beneficial effects: the single-wheel drive three-gear speed change device adopts the pawl type gear shift mechanism, so that the structure is compact, the gear shift operation is convenient, the gear shift stability is greatly improved, in addition, the pawl type gear shift mechanism can also be used as an overrunning clutch, and the overrunning clutch does not need to be used in the planetary transmission, so the structure is greatly simplified.
[ description of the drawings ]
Fig. 1 is a front view schematically showing the structure of a single-wheel drive three-speed transmission according to the present invention.
Fig. 2 is a schematic sectional view showing the three-speed transmission of the single wheel drive of the present invention.
Fig. 3 is an exploded schematic view of the single wheel drive three speed transmission of the present invention.
In the figure: 1. a central shaft, 10, a first end cap, 11, a first clamping nut, 12, a second end cap, 13, a second clamping nut, 2, a hub, 20, a guide rod, 3, a gear shift mechanism, 30, a pawl holder, 300, an opening, 301, a spring, 302, an elongated key slot, 31, a pawl, 310, a pawl part, 32, a first ratchet, 33, a second ratchet, 34, a third ratchet, 4, a power input, 5, a first planetary transmission, 50, a first central wheel, 51, a first planet carrier, 52, a first planet wheel, 53, a first ring gear, 6, a second planetary transmission, 60, a second central wheel, 61, a second planet carrier, 62, a second planet wheel, 63, a second ring gear.
[ detailed description ] embodiments
A single wheel drive three speed transmission according to the present invention is described in further detail below with reference to specific embodiments.
Referring to fig. 1 to 3, a single wheel drive three speed transmission includes: center pin 1, wheel hub 2 and set up gearshift 3, power input part 4 and two sets of planetary transmission (first planetary transmission 5 and second planetary transmission 6) that set up side by side between center pin 1 and wheel hub 2, the one end of center pin 1 is equipped with first end cover 10 and first lock nut 11, be connected through bearing or ball between first end cover 10 and the power input part 4, be connected through bearing or ball between power input part 4 and the first lock nut 11, the other end of center pin 1 is equipped with second end cover 12 and second lock nut 13, be connected through bearing or ball between second end cover 12 and the second lock nut 13.
The first planetary transmission 5 includes: a first sun gear 50, a first carrier 51, a first planetary gear 52, and a first ring gear 53, and the second planetary transmission 6 includes: the first sun gear 50, the second sun gear 60 and the central shaft 1 are integrally formed, the central shaft 1 is fixed with the frame, and the first planet carrier 51 and the second ring gear 63 are integrally formed.
The gear shifting mechanism 3 comprises a pawl frame 30, three pawls 31 mounted on the pawl frame 30, a first ratchet 32 arranged on the outer circumferential surface of the first gear ring 53, a second ratchet 33 arranged on the outer circumferential surface of the second gear ring 63, and a third ratchet 34 arranged on the outer circumferential surface of the second planet carrier 61, wherein the pawl frame 30 is arranged in a circular ring shape, a plurality of openings 300 are formed in the pawl frame 30, and the pawls 31 are accommodated in the openings 300 and are mounted on the pawl frame 30 through pins. In the present embodiment, the power input member 4 is fixedly connected to the first carrier 51, but in other embodiments, the power input member 4 may be fixedly connected to the second carrier 61, the first ring gear 53 or the second ring gear 63, the pawl member 31 is provided with a pawl portion 310, and the pawl portion 310 is provided with an engagement guide surface (not shown) which guides when the pawl portion 310 engages with the ratchet wheel, thereby further stabilizing the gear shift. The pawl holder 30 is provided with an elastic member for controlling the initial position of the pawl 31, and in the present embodiment, the elastic member is a spring 301, but in other embodiments, the elastic member may be another elastic member such as a torsion spring or an elastic piece. Three axially arranged guide rods 20 are arranged in the hub 2, and the pawl frame 30 is provided with elongated key slots 302 which are matched with the guide rods 20, so that the pawl frame 30 can slide back and forth relative to the guide rods 20.
The working principle of the single-wheel drive three-gear speed change device is as follows: in the present embodiment, the power input member 4 is connected to the first carrier 51 by teeth, and at low speed, the pawl 31 is engaged with the third ratchet wheel 34 under the control of the spring 301, power is input by the power input member 4, since the power input member 4 is tooth-coupled with the first carrier 51, the first carrier 51 rotates in synchronization, since the first carrier 51 is integrally formed with the second ring gear 63, and therefore the second ring gear 63 rotates synchronously, the second ring gear 63 transmits power to the second carrier 61 through the transmission of the second planetary gears 62, since the third ratchet wheel 34 is arranged on the second planet carrier 61, the third ratchet wheel 34 in turn meshes with the pawl 31, which pawl 31 in turn is arranged on the pawl carrier 30, so that the pawl carrier 30 rotates synchronously, because the pawl frame 30 is connected with the hub 2 through the guide rod 20 and the elongated key slot 302, the power is finally transmitted to the hub 2 and is output by the hub 2; at the middle gear, the pawl frame 30 is manually moved to cause the pawl 31 on the pawl frame 30 to be disengaged from the third ratchet wheel 34 and engaged with the second ratchet wheel 33, power is input by the power input member 4, the first planet carrier 51 rotates synchronously due to the fixed connection of the power input member 4 and the first planet carrier 51, the second ring gear 63 rotates synchronously due to the integral formation of the first planet carrier 51 and the second ring gear 63, the second ratchet wheel 33 is arranged on the second ring gear 63, the second ratchet wheel 33 is engaged with the pawl 31, the pawl 31 is arranged on the pawl frame 30, the pawl frame 30 rotates synchronously, and power is finally transmitted to the hub 2 and is output by the hub 2 due to the connection between the pawl frame 30 and the hub 2 with the elongated key slot 302 through the guide rod 20; in the high gear, the pawl frame 30 is manually moved to enable the pawl 31 on the pawl frame 30 to be disengaged from the second ratchet wheel 33 and to be engaged with the first ratchet wheel 32, power is input by the power input part 4, the first planet frame 51 rotates synchronously as the power input part 4 is fixedly connected with the first planet frame 51, the first planet frame 51 transmits power to the first gear ring 53 through transmission of the first planet wheel 52, the first ratchet wheel 32 is arranged on the first gear ring 53, the first ratchet wheel 32 is engaged with the pawl 31, the pawl 31 is arranged on the pawl frame 30, the pawl frame 30 rotates synchronously, and power is finally transmitted to the hub 2 and is output by the hub 2 as the pawl frame 30 is connected with the elongated key slot 302 through the guide rod 20.
In conclusion, the single-wheel drive three-gear speed change device is compact in structure, convenient to shift and control and greatly improved in shifting stability, and the pawl type gear shift mechanism can be used as an overrunning clutch without using the overrunning clutch in the planetary transmission, so that the structure is greatly simplified.
The above-mentioned embodiments are merely illustrative of the principles and effects of the present invention, and some embodiments may be used, not restrictive; it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications belong to the protection scope of the present invention.
Claims (7)
1. A single-wheel drive three-speed transmission, comprising: center pin, wheel hub and set up power input spare, gearshift between center pin and wheel hub and two sets of planetary transmission who sets up side by side, planetary transmission includes: a first planetary transmission and a second planetary transmission, the first planetary transmission comprising: first sun gear, first planet carrier, first planet wheel and first ring gear, second planetary transmission includes: second centre wheel, second planet carrier, second planet wheel and second ring gear, first centre wheel and center pin integrated into one piece or fixed connection, second centre wheel and center pin integrated into one piece or fixed connection, the center pin is fixed mutually with the frame, first planet carrier and second ring gear integrated into one piece or fixed connection, power input spare and one of them part fixed connection in first planet carrier, second planet carrier, first ring gear and the four parts of second ring gear, gear shifting mechanism includes: the ratchet wheel comprises a first ratchet wheel arranged on the first gear ring, a second ratchet wheel arranged on the second gear ring and a third ratchet wheel arranged on the second planet carrier.
2. A single-wheel-drive three-speed transmission as claimed in claim 1, wherein: and a plurality of guide rods matched with the pawl rack are arranged in the hub and are arranged along the axial direction of the central shaft.
3. A single-wheel-drive three-speed transmission as claimed in claim 1, wherein: the pawl frame is arranged in a circular ring shape, a plurality of openings are formed in the pawl frame, and the pawl is accommodated in the openings and is installed on the pawl frame through pins.
4. A single-wheel drive three-speed transmission as claimed in claim 1, wherein: the elastic piece is a torsion spring or a spring sheet.
5. A single-wheel drive three-speed transmission as claimed in claim 1, wherein: the ratchet piece is provided with a pawl part matched with the ratchet wheel, and the pawl part is provided with an engaging guide surface.
6. A single-wheel-drive three-speed transmission as claimed in claim 1, wherein: the one end of center pin is equipped with first end cover and first lock nut, be connected through bearing or ball between first end cover and the power input piece, be connected through bearing or ball between power input piece and the first lock nut, the other end of center pin is equipped with second end cover and second lock nut, be connected through bearing or ball between second end cover and the second lock nut.
7. A single-wheel-drive three-speed transmission as claimed in claim 1, wherein: the first central wheel and the second central wheel are integrally formed or fixedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710331580.6A CN106985962B (en) | 2017-05-11 | 2017-05-11 | Single-wheel drive three-gear speed change device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710331580.6A CN106985962B (en) | 2017-05-11 | 2017-05-11 | Single-wheel drive three-gear speed change device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106985962A CN106985962A (en) | 2017-07-28 |
| CN106985962B true CN106985962B (en) | 2022-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710331580.6A Active CN106985962B (en) | 2017-05-11 | 2017-05-11 | Single-wheel drive three-gear speed change device |
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| Country | Link |
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| CN (1) | CN106985962B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206797623U (en) * | 2017-05-11 | 2017-12-26 | 张家港川梭车业有限公司 | A kind of single wheel drive three keeps off speed change gear |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1152031B (en) * | 1961-07-13 | 1963-07-25 | Fichtel & Sachs Ag | Two-speed transmission hub with two output units and a step-down circuit |
| CN2294216Y (en) * | 1996-10-03 | 1998-10-14 | 黄志伟 | Speed-change mechanism placed on rear shaft of bicycle |
| US6387008B1 (en) * | 1999-09-13 | 2002-05-14 | Industrial Technology Research Institute | Speed-changing control mechanism of multistage speed-changing wheel hub |
| CN2444088Y (en) * | 2000-09-30 | 2001-08-22 | 王爱月 | Three-stages internal variable speed axle |
| JP3124824U (en) * | 2006-06-19 | 2006-08-31 | 久裕興業股▲ふん▼有限公司 | Bicycle hub shifting structure |
| EP2773554B1 (en) * | 2011-11-08 | 2016-10-19 | EBM Solutions Pty Ltd | Dual speed bottom bracket |
| CN106114747B (en) * | 2016-07-22 | 2018-08-28 | 张家港川梭车业有限公司 | A kind of bicycle use three-step gear shift driving device |
| CN106428402B (en) * | 2016-08-22 | 2022-02-01 | 张家港川梭车业有限公司 | Two-stage variable speed driving device for bicycle |
| CN106428403B (en) * | 2016-08-31 | 2021-11-02 | 张家港川梭车业有限公司 | Stable tertiary variable speed drive arrangement changes speed |
| CN106481754B (en) * | 2016-12-21 | 2018-11-02 | 黄英可 | A kind of multi gear automatic internal speed variator of real |
| CN106627975B (en) * | 2017-01-20 | 2021-12-17 | 张家港川梭车业有限公司 | Single-wheel direct-drive transmission is trampled to straight line |
-
2017
- 2017-05-11 CN CN201710331580.6A patent/CN106985962B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206797623U (en) * | 2017-05-11 | 2017-12-26 | 张家港川梭车业有限公司 | A kind of single wheel drive three keeps off speed change gear |
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| Publication number | Publication date |
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| CN106985962A (en) | 2017-07-28 |
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