CN106627975B - Single-wheel direct-drive transmission is trampled to straight line - Google Patents
Single-wheel direct-drive transmission is trampled to straight line Download PDFInfo
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- CN106627975B CN106627975B CN201710042881.7A CN201710042881A CN106627975B CN 106627975 B CN106627975 B CN 106627975B CN 201710042881 A CN201710042881 A CN 201710042881A CN 106627975 B CN106627975 B CN 106627975B
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- pawl
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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
Abstract
The invention discloses a linear treading single-wheel direct-drive transmission, which comprises: the automatic centrifugal gear shifting device comprises a central shaft, an input wheel, a hub, two sets of planetary transmissions and two sets of automatic centrifugal gear shifting mechanisms, wherein each planetary transmission comprises a first planetary transmission and a second planetary transmission, and each first planetary transmission comprises: first planet carrier, first planet wheel, first ring gear and first sun gear, second planetary transmission includes: the automatic centrifugal gear shifting mechanism comprises a first automatic centrifugal gear shifting mechanism and a second automatic centrifugal gear shifting mechanism, the first automatic centrifugal gear shifting mechanism is arranged between the hub and the second assembly, and the second automatic centrifugal gear shifting mechanism is arranged between the hub and the first gear ring.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of bicycles, in particular to a linear treading single-wheel direct-drive transmission.
[ 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, and is sealed inside a hub and protected by multiple layers of special sealing materials, so rainwater, dust, oil dirt and the like cannot enter, the regular maintenance is not needed, and the advantage of no maintenance is realized. The following disadvantages are common to prior art internal transmissions: 1. manual gear shifting is needed, and automatic gear shifting cannot be realized; 2. when the internal transmission is shifted into high gear, the kick frequency, if reduced, makes it difficult to maintain the transmission in high gear.
[ summary of the invention ]
In order to solve the problems, the invention aims to provide a linear treading single-wheel direct-drive transmission capable of reducing the treading frequency requirement.
In order to achieve the purpose, the invention adopts the technical scheme that: a linear pedaling single wheel direct drive transmission comprising: the central shaft, set up in the input wheel at central shaft both ends, set up wheel hub between two input wheels and set up the speed change mechanism between central shaft and wheel hub, the central shaft is power input spare, wheel hub is power take off spare, be provided with first freewheel clutch between input wheel and the central shaft, speed change mechanism includes two sets of planetary transmission and two sets of automatic centrifugal gearshift, planetary transmission includes first planetary transmission and second planetary transmission, first planetary transmission includes: first planet carrier, first planet wheel, first ring gear and first sun gear, second planetary transmission includes: the first central wheel and the second central wheel are respectively sleeved on a central shaft and fixed with a frame, the first central wheel and the second central wheel are separately arranged or integrally formed, the first planet carrier and the second gear ring are separately arranged or integrally formed, the central shaft is fixedly connected with the first gear ring or simultaneously fixedly connected with the first planet carrier and the second gear ring, a second overrunning clutch is arranged between the second planet carrier and the hub, the automatic centrifugal gear shifting mechanism comprises a first automatic centrifugal gear shifting mechanism and a second automatic centrifugal gear shifting mechanism, the first automatic centrifugal gear shifting mechanism comprises a first pawl rack, a first ratchet wheel and at least one first pawl piece, the first pawl piece is arranged on the first pawl rack, the first pawl piece is arranged in the hub, the first ratchet wheel is arranged on the first planet carrier or the second gear ring, a first elastic piece for controlling the initial position of the first pawl piece is arranged on the first pawl piece carrier, the second automatic centrifugal gear shifting mechanism comprises a second pawl piece carrier, a second ratchet wheel and at least one second pawl piece, the second pawl piece is arranged on the second pawl piece carrier, the second pawl piece carrier is arranged in the wheel hub, the second ratchet wheel is arranged on the first gear ring, and a second elastic piece for controlling the initial position of the second pawl piece is arranged on the second pawl piece carrier.
Preferably, the linear stepping single-wheel direct drive transmission is further configured as follows: first elastic component and second elastic component are the torsional spring, include: the first torsion bar and the second torsion bar protrude from the circular mounting part.
Preferably, the linear stepping single-wheel direct drive transmission is further configured as follows: the number of the first pawl members is two, the two first pawl members are connected through a first balance pull rod, in the circumferential direction, the first balance pull rod and the first elastic piece are respectively arranged between the two first pawl pieces, the first pawl comprises a first end part, a second end part and a first mounting part arranged between the first end part and the second end part, the first end part is provided with a balancing weight, the second end part is provided with a first ratchet claw part matched with the first ratchet wheel, the first torsion bar of the first elastic member abuts against the first end of one of the first pawls, the second torsion bar of the first elastic component is abutted with the second end part of the other first pawl component, one end of the balance pull rod is connected with the first end of one of the first pawl members, and the other end of the balance pull rod is connected with the second end of the other first pawl member.
Preferably, the linear stepping single-wheel direct drive transmission is further configured as follows: the number of the second pawl members is two, the two second pawl members are connected through a second balance pull rod, in the circumferential direction, the second elastic part and the second balance pull rod are respectively positioned between the two second pawl parts, the second pawl comprises a third end part, a fourth end part and a second mounting part arranged between the third end part and the fourth end part, the third end part is provided with a balancing weight, the fourth end part is provided with a second ratchet claw part matched with the second ratchet wheel, the first torsion bar of the second elastic piece is abutted with the third end of one of the second pawls, the second torsion bar of the second elastic member abuts against the fourth end of the other second pawl member, one end of the second balance pull rod is connected with the third end of one of the second pawl members, and the other end of the second balance pull rod is connected with the fourth end of the other second pawl member.
Preferably, the linear stepping single-wheel direct drive transmission is further configured as follows: the first pawl mount includes: the structure of the second pawl fixing frame is the same as that of the first pawl fixing frame.
Preferably, the linear stepping single-wheel direct drive transmission is further configured as follows: wheel hub's one end is equipped with first frame mounting and fastening piece, wheel hub's the other end is equipped with second frame mounting, be equipped with the boss on the center pin, be connected through ball or bearing between first frame mounting and the fastening piece, be connected through ball or bearing between first frame mounting and the wheel hub, be connected through ball or bearing between second frame mounting and the boss
Compared with the prior art, the invention has the following beneficial effects: the linear pedaling direct-drive transmission has the advantages of compact structure, convenience in installation, high transmission efficiency, firm gear shifting and stable speed change, full-automatic speed change can be realized by arranging a plurality of sets of automatic centrifugal gear shifting mechanisms in the transmission, and the requirements on pedaling frequency can be reduced when the transmission is in a middle gear or a high gear, so that riding is easier.
[ description of the drawings ]
Fig. 1 is a schematic front view of a linear stepping single-wheel direct-drive transmission in embodiment 1 of the present invention.
Fig. 2 is an exploded schematic view of a linear stepping single-wheel direct-drive transmission in embodiment 1 of the present invention.
Fig. 3 is a schematic cross-sectional structural view of a linear stepping single-wheel direct-drive transmission in embodiment 1 of the invention.
Fig. 4 is a schematic structural view of the first automatic centrifugal shift mechanism in embodiment 1 of the invention.
Fig. 5 is a schematic structural view of the second automatic centrifugal shift mechanism in embodiment 1 of the invention.
In the figure: 1. center shaft, 10, boss, 11, input wheel, 12, first overrunning clutch, 2, hub, 20, first frame mount, 21, hold-up member, 22, second frame mount, 3, first planetary transmission, 30, first carrier, 31, first planetary gear, 32, first ring gear, 33, first center wheel, 4, second planetary transmission, 40, second carrier, 41, second planetary gear, 42, second ring gear, 43, second center wheel, 5, first automatic centrifugal shifting mechanism, 50, first pawl mount, 500, annular base, 501, mount, 51, first pawl, 510, first end, 511, second end, 512, first mount, 513, weight, 514, first pawl, first mounting hole, 52, first ratchet, 53, first torsion spring, 530, circular mount, 531, first torsion bar, 532. a second torsion bar 54, a first balance link 6, a second automatic centrifugal shift mechanism 60, a second pawl holder 61, a second pawl 610, a third end 611, a fourth end 612, a second mounting portion 613, a weight block 614, a second pawl portion 615, a second mounting hole 62, a second ratchet wheel 63, a second torsion spring 630, a circular mounting portion 631, a first torsion bar 632, a second torsion bar 64, a second balance link 7, a first assembly 8, a second assembly 9, a second overrunning clutch.
[ detailed description ] embodiments
A linear pedaling single wheel direct drive transmission according to the present invention is described in further detail by way of specific embodiments below.
Example 1
Referring to fig. 1 to 5, a linear pedaling single wheel direct drive transmission comprises: the central shaft 1, the hub 2 and the speed change mechanism arranged between the central shaft 1 and the hub 2, wherein the central shaft 1 is a power input part, the hub 2 is a power output part, the input wheels 11 are arranged at two ends of the central shaft 1, and a first overrunning clutch 12 is arranged between the input wheels 11 and the central shaft 1. in the embodiment, the input wheels 11 and the first overrunning clutch 12 form an assembly, and the speed change mechanism comprises two sets of planetary transmissions (a first planetary transmission 3 and a second planetary transmission 4) and two sets of automatic centrifugal shifting mechanisms (a first automatic centrifugal shifting mechanism 5 and a second automatic centrifugal shifting mechanism 6).
The first planetary transmission 3 is arranged side by side with a second planetary transmission 4, and the first planetary transmission 3 includes: a first carrier 30, a first planetary gear 31, a first ring gear 32, and a first sun gear 33, and the second planetary transmission 4 includes: a second planet carrier 40, a second planet wheel 41, a second gear ring 42 and a second centre wheel 43, wherein the first centre wheel 33 and the second centre wheel 43 are integrally formed to form a first assembly 7, the first assembly 7 is sleeved on the central shaft 1 and fixed with the frame, the first planet carrier 30 and the second gear ring 42 are integrally formed to form a second assembly 8, a second overrunning clutch 9 is arranged between the second planet carrier 40 and the hub 2, the second overrunning clutch 9 comprises an overrunning pawl and an overrunning ratchet wheel, in this embodiment, the overrunning pawl is arranged on the second planet carrier 40, the overrunning ratchet wheel is arranged in the hub 2, of course, in other embodiments, the overrunning pawl can also be arranged in the hub 2, the overrunning ratchet wheel can also be arranged on the second planet carrier 40, the invention can also be realized, the first gear ring 32 is fixedly connected with the central shaft 1, in the present embodiment, the first ring gear 32 is spline-connected to the center shaft 1.
The first automatic centrifugal gear shifting mechanism 5 includes a first pawl frame 50, two first pawls 51, a first ratchet 52, a first torsion spring 53 and a first balance pull rod 54, and the first pawl frame 50 includes: the circular base 500 and the plurality of mounting seats 501 extending inward from the inner wall of the circular base 500, the first pawl 51 and the first torsion spring 53 are mounted on the first pawl frame 50 through pins, in the circumferential direction, the first torsion spring 53 and the first balance pull rod 54 are respectively located between two first pawl 51, the first pawl frame 50 is disposed in the hub 2 and integrally formed with the hub 2, the first ratchet 52 is disposed on the second assembly 8 and integrally formed with the second assembly 8, the first pawl 51 includes a first end portion 510, a second end portion 511 and a first mounting portion 512 disposed between the first end portion 510 and the second end portion 511, the first end portion 510 is provided with a weight block 513, the second end portion 511 is provided with a first pawl portion 514 matched with the first ratchet 52, the first mounting portion 512 is provided with a first mounting hole 515, a pin passes through the first mounting hole 515 to mount the first pawl 51 to the first pawl frame 50, the first torsion spring 53 includes a circular mounting portion 530 and first and second torsion bars 531 and 532 protruding from the circular mounting portion 530, the circular mounting portion 530 is mounted to the first pawl frame 50 by the pin, the first torsion bar 531 of the first torsion spring 53 abuts against the first end portion 510 of one of the first pawls 51, the second torsion bar 532 of the first torsion spring 53 abuts against the second end portion 511 of the other first pawl 51, one end of the first balance link 54 is connected to the first end portion 510 of one of the first pawls 51, and the other end of the first balance link 54 is connected to the second end portion 511 of the other first pawl 51.
The second automatic centrifugal shifting mechanism 6 includes a second pawl holder 60, two second pawls 61, a second ratchet 62, a second torsion spring 63 and a second balance pull rod 64, the second pawl 61 and the second torsion spring 63 are both mounted on the second pawl holder 60 by pins, in the circumferential direction, the second torsion spring 63 and the second balance pull rod 64 are respectively located between the two second pawls 61, the second pawl holder 60 is disposed in the hub 2 and integrally formed with the hub 2, the second ratchet 62 is disposed on the first ring gear 32 and integrally formed with the first ring gear 32, the second pawl 61 includes a third end 610, a fourth end 611 and a second mounting portion 612 disposed between the third end 610 and the fourth end 611, the third end 610 is provided with a weight block 613, the fourth end 611 is provided with a second pawl portion 614 engaged with the second ratchet 62, the second mounting portion 612 is provided with a second mounting hole 615 through which a pin passes through the second mounting hole 615 to mount the second pawl 61 to the second pawl frame 60, the second torsion spring 63 includes a circular mounting portion 630 and first and second torsion bars 631 and 632 protruding from the circular mounting portion 630, the first torsion bar 631 of the second torsion spring 63 abuts the third end 610 of one of the second pawls 61, the second torsion bar 632 of the second torsion spring 63 abuts the fourth end 611 of the other second pawl 61, one end of the second balance link 64 is connected to the third end 610 of one of the second pawls 61, and the other end of the second balance link 64 is connected to the fourth end 611 of the other second pawl 61.
The one end of wheel hub 2 is equipped with first frame mounting 20 and holding member 21, the other end of wheel hub 2 is equipped with second frame mounting 22, be equipped with boss 10 on the center pin 1, first frame mounting 20 and first subassembly 7 fixed connection or integrated into one piece to make first subassembly 7 fixed mutually with the frame, be connected through ball or bearing between first frame mounting 20 and the holding member 21, be connected through ball or bearing between first frame mounting 20 and the wheel hub 2, be connected through ball or bearing between second frame mounting 22 and the boss 10.
The working principle of the linear treading single-wheel direct-drive transmission in the embodiment 1 is as follows: the linear stepping single-wheel direct-drive transmission in the embodiment realizes three-stage speed change, the second overrunning clutch 9 in the embodiment is in a normally open state, namely the second planet carrier 40 and the hub 2 are always in an engaged state, power is input from the central shaft 1 and is output by the hub 2, when in low speed, because the first gear ring 32 is fixedly connected with the central shaft 1, the central shaft 1 rotates to drive the first gear ring 32 to rotate together, the first gear ring 32 transmits the power to the first planet carrier 30 through the transmission of the first planet wheel 31, because the first planet carrier 30 and the second gear ring 42 are integrally formed, the second gear ring 42 is driven to rotate, and then the second planet carrier 41 transmits the power to the second planet carrier 40, because the second planet carrier 40 and the hub 2 are always in an engaged state through the second overrunning clutch 9, the power is finally transmitted to the hub 2 and is output by the hub 2 to realize low speed change, when the input speed is slowly increased, the speed of the hub 2 is also increased, when the input speed is increased to the opening value of the first automatic centrifugal gear shifting mechanism 5, the first end portion 510 of the first pawl member 51 in the first automatic centrifugal gear shifting mechanism 5 is provided with the balancing weight 513, the balancing weight 513 moves in the direction away from the axis under the action of centrifugal force, under the action of the lever principle, the second end portion 511 of the first pawl member 51 of the first automatic centrifugal gear shifting mechanism 5 moves towards the circle center direction, so that the first pawl portion 514 on the second end portion 511 is meshed with the first ratchet 52, so that the hub 2 is meshed with the second assembly 8, when the hub 2 is meshed with the second assembly 8, the second overrunning clutch 9 is in a follow-up state, when the middle gear is shifted, power is input by the central shaft 1, and because the first gear ring 32 is fixedly connected with the central shaft 1, the power is transmitted to the first gear ring 32, the first gear ring 32 transmits power to the first planet carrier 30 through the transmission of the first planet wheel 31, the first planet carrier 30 and the second gear ring 42 are integrally formed into the second assembly 8, so the power is transmitted to the second assembly 8, at this time, the second assembly 8 is meshed with the hub 2 through the first automatic centrifugal gear shifting mechanism 5, so the power is finally transmitted to the hub 2 and is output by the hub 2, along with the further increase of the input speed, the rotation speed of the hub 2 is further increased, when the opening value of the second automatic centrifugal gear shifting mechanism 6 is increased, the third end portion 610 of the second pawl 61 in the second automatic centrifugal gear shifting mechanism 6 moves in the direction far away from the axis under the action of the centrifugal force due to the arrangement of the weight block 613, and under the action of the lever principle, the fourth end portion 611 of the second pawl 61 in the second automatic centrifugal gear shifting mechanism 6 moves towards the center of the circle, therefore, the second pawl part 614 on the fourth end part 611 is meshed with the second ratchet wheel 62, so that the first gear ring 32 is meshed with the hub 2, when the first gear ring 32 is meshed with the hub 2, the first automatic centrifugal gear shifting mechanism 5 and the overrunning clutch 9 are in a follow-up state, power is input from the central shaft 1 in a high-speed gear, the first gear ring 32 is fixedly connected with the central shaft 1, so that the power is transmitted to the first gear ring 32, and because the first gear ring 32 is meshed with the hub 2 through the second automatic centrifugal gear shifting mechanism 6, the power is directly transmitted to the hub 2 and is output from the hub 2, so that the high-speed gear is realized. In the present embodiment, it is assumed that the maximum speed ratio in the present embodiment is set to 2.25:1, and the speed ratios between two adjacent gears are 1.5: 1. The operating speed of the second automatic centrifugal shift mechanism 6 at which the pawls are opened is 135 rpm, and the operating speed of the first automatic centrifugal shift mechanism 5 at which the pawls are opened is 90 rpm, so that when the input speed of the center shaft 1 is 135 rpm at the first-stage low speed, the speed of the first carrier 30 is 90 rpm, the speed of the second carrier 40 is 60 rpm, and the output speed of the hub 2 at this time is 60 rpm, which is smaller than the operating speed of the first automatic centrifugal mechanism 5 at which the pawls are opened by 90 rpm. When the input speed of the central shaft 1 is 202.5 revolutions per minute, the speed of the first planet carrier 30 is 135 revolutions per minute, the speed of the second planet carrier 40 is 90 revolutions per minute, the output rotating speed of the hub 2 is 90 revolutions per minute, the first automatic centrifugal pawl is opened at the moment, the first planet carrier 30 drives the hub 2 to rotate, the middle gear speed change is realized, the rotating speed of the first planet carrier 30 is 135 revolutions per minute at the moment and is greater than the operating rotating speed of the first automatic centrifugal gear shifting mechanism 5, which is 90 revolutions per minute when the pawl is opened, so the input rotating speed of the central shaft 1 can be reduced, namely the treading frequency can be reduced. When the input speed of the central shaft 1 is again referred to as 202.5 rpm, the speed of the first planet carrier 30 is 135 rpm, the speed of the second planet carrier 40 is 90 rpm, the output rotating speed of the hub 2 is 135 rpm, the second automatic centrifugal pawl is opened, the first gear ring 32 drives the hub 2 to rotate, the high-gear speed change is realized, the rotating speed of the first gear ring 32 is 202.5 rpm and is greater than the working rotating speed of the second automatic centrifugal gear shifting mechanism 6 with the opened pawl of 135 rpm, and therefore the input rotating speed of the central shaft 1 can be reduced, namely the treading frequency can be reduced.
Example 2
The other structures of the linear treading single-wheel direct-drive transmission in the embodiment are the same as those of the linear treading single-wheel direct-drive transmission in the embodiment 1, and the difference is that: in embodiment 1, the central shaft is fixedly connected with the first gear ring, and in embodiment 2, the central shaft is fixedly connected with the second assembly. Of course, in other embodiments, the first planet carrier and the second ring gear can be separately arranged and fixedly connected with the central shaft respectively, and the invention can also be realized. The first frame fixing member is fixedly connected with or integrally formed with the first assembly, but in other embodiments, the first center wheel and the second center wheel may be separately arranged, the first center wheel is fixedly connected with or integrally formed with the first frame fixing member, and the second center wheel is fixedly connected with or integrally formed with the second frame fixing member.
The working principle of the linear treading single-wheel direct-drive transmission in the embodiment is as follows: the linear treading single-wheel direct-drive transmission in the embodiment realizes three-stage speed change, the overrunning clutch in the embodiment is in a normally open state, namely the second planet carrier and the hub are always in an engaged state, power is input through the central shaft and is output through the hub, and power is input through the central shaft during low-speed gear shifting, because the second assembly is fixedly connected with the central shaft, the power is transmitted to the second assembly which is integrally formed by the first planet carrier and the second ring gear, the second assembly transmits the power to the second planet carrier through the transmission of the second planet carrier, because the overrunning pawl on the second planet carrier is always in an engaged state with the overrunning ratchet wheel on the hub, the power is finally transmitted to the hub and is output through the hub, the speed of the hub is also increased along with the slow increase of the input speed, and when the speed is increased to the opening value of the first automatic centrifugal gear shifting mechanism, the first end part of the first automatic centrifugal gear shifting mechanism is provided with a balancing weight, the balancing weight moves along the direction far away from the axle center under the action of centrifugal force, under the action of a lever principle, the second end part of a first pawl part of the first automatic centrifugal gear shifting mechanism moves towards the direction of the circle center, so that a first pawl part on the second end part is meshed with a first ratchet wheel, a wheel hub is meshed with a second assembly, when the wheel hub is meshed with the second assembly, an overrunning clutch is in a follow-up state, power is input from a central shaft when in a medium speed gear, the second assembly is fixedly connected with the central shaft and meshed with the wheel hub, as the power is directly transmitted to the wheel hub and is output by the wheel hub, the rotating speed of the wheel hub is further improved along with the further improvement of the input speed, when the opening value of the second automatic centrifugal gear shifting mechanism is improved, the third end part of the second pawl part of the second automatic centrifugal gear shifting mechanism is provided with a balancing weight, the balancing weight moves along the direction far away from the axle center under the action of centrifugal force, under the action of a lever principle, the fourth end part of the second pawl part of the second automatic centrifugal gear shifting mechanism moves towards the circle center direction, so that a second pawl part on the fourth end part is meshed with a second ratchet wheel, a first gear ring is meshed with a hub, when the first gear ring is meshed with the hub, the first automatic centrifugal gear shifting mechanism and the overrunning clutch are in a follow-up state, power is input from a central shaft during high-speed gear shifting, the power is transmitted to a second assembly part due to the fact that the second assembly part is fixedly connected with the central shaft, the second assembly part is formed by integrally forming a first planet carrier and a second gear ring, and therefore, the first planet carrier transmits the power to the first gear ring through the transmission of the first planet carrier, since the first ring gear is meshed with the hub, power is finally transmitted to the hub and is output by the hub.
In conclusion, the linear pedaling direct-drive transmission has the advantages of compact structure, convenience in installation, high transmission efficiency, firmness in gear shifting and stable speed change, full-automatic speed change can be realized by arranging a plurality of sets of automatic centrifugal gear shifting mechanisms in the transmission, and the requirements on pedaling frequency can be reduced when the transmission is in a middle gear or a high gear, so that riding is easier.
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 (6)
1. The utility model provides a single round of derailleur is directly driven to sharp trampling which characterized in that includes: the central shaft, set up in the input wheel at central shaft both ends, set up wheel hub between two input wheels and set up the speed change mechanism between central shaft and wheel hub, the central shaft is power input spare, wheel hub is power take off spare, be provided with first freewheel clutch between input wheel and the central shaft, speed change mechanism includes two sets of planetary transmission and two sets of automatic centrifugal gearshift, planetary transmission includes first planetary transmission and second planetary transmission, first planetary transmission includes: first planet carrier, first planet wheel, first ring gear and first sun gear, second planetary transmission includes: the first central wheel and the second central wheel are respectively sleeved on a central shaft and fixed with a frame, the first central wheel and the second central wheel are separately arranged or integrally formed, the first planet carrier and the second gear ring are separately arranged or integrally formed, the central shaft is fixedly connected with the first gear ring or simultaneously fixedly connected with the first planet carrier and the second gear ring, a second overrunning clutch is arranged between the second planet carrier and the hub, the automatic centrifugal gear shifting mechanism comprises a first automatic centrifugal gear shifting mechanism and a second automatic centrifugal gear shifting mechanism, the first automatic centrifugal gear shifting mechanism comprises a first pawl rack, a first ratchet wheel and at least one first pawl piece, the first pawl piece is arranged on the first pawl rack, the first pawl piece is arranged in the hub, the first ratchet wheel is arranged on the first planet carrier or the second gear ring, a first elastic piece for controlling the initial position of the first pawl piece is arranged on the first pawl piece carrier, the second automatic centrifugal gear shifting mechanism comprises a second pawl piece carrier, a second ratchet wheel and at least one second pawl piece, the second pawl piece is arranged on the second pawl piece carrier, the second pawl piece carrier is arranged in the wheel hub, the second ratchet wheel is arranged on the first gear ring, and a second elastic piece for controlling the initial position of the second pawl piece is arranged on the second pawl piece carrier.
2. A linear pedaling single wheel direct drive transmission as defined in claim 1, wherein: first elastic component and second elastic component are the torsional spring, include: the first torsion bar and the second torsion bar protrude from the circular mounting part.
3. A linear pedaling single wheel direct drive transmission as defined in claim 2, wherein: the number of the first pawl members is two, the two first pawl members are connected through a first balance pull rod, in the circumferential direction, the first balance pull rod and the first elastic piece are respectively arranged between the two first pawl pieces, the first pawl comprises a first end part, a second end part and a first mounting part arranged between the first end part and the second end part, the first end part is provided with a balancing weight, the second end part is provided with a first ratchet claw part matched with the first ratchet wheel, the first torsion bar of the first elastic member abuts against the first end of one of the first pawls, the second torsion bar of the first elastic component is abutted with the second end part of the other first pawl component, one end of the balance pull rod is connected with the first end of one of the first pawl members, and the other end of the balance pull rod is connected with the second end of the other first pawl member.
4. A linear pedaling single wheel direct drive transmission as defined in claim 2, wherein: the number of the second pawl members is two, the two second pawl members are connected through a second balance pull rod, in the circumferential direction, the second elastic part and the second balance pull rod are respectively positioned between the two second pawl parts, the second pawl comprises a third end part, a fourth end part and a second mounting part arranged between the third end part and the fourth end part, the third end part is provided with a balancing weight, the fourth end part is provided with a second ratchet claw part matched with the second ratchet wheel, the first torsion bar of the second elastic piece is abutted with the third end of one of the second pawls, the second torsion bar of the second elastic member abuts against the fourth end of the other second pawl member, one end of the second balance pull rod is connected with the third end of one of the second pawl members, and the other end of the second balance pull rod is connected with the fourth end of the other second pawl member.
5. A linear pedaling single wheel direct drive transmission as defined in claim 1, wherein: the first pawl carrier includes: the structure of the second pawl rack is the same as that of the first pawl rack.
6. A linear pedaling single wheel direct drive transmission as defined in claim 1, wherein: wheel hub's one end is equipped with first frame mounting and fastening piece, wheel hub's the other end is equipped with second frame mounting, be equipped with the boss on the center pin, be connected through ball or bearing between first frame mounting and the fastening piece, be connected through ball or bearing between first frame mounting and the wheel hub, be connected through ball or bearing between second frame mounting and the boss.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710042881.7A CN106627975B (en) | 2017-01-20 | 2017-01-20 | Single-wheel direct-drive transmission is trampled to straight line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710042881.7A CN106627975B (en) | 2017-01-20 | 2017-01-20 | Single-wheel direct-drive transmission is trampled to straight line |
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| CN106627975A CN106627975A (en) | 2017-05-10 |
| CN106627975B true CN106627975B (en) | 2021-12-17 |
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|---|---|---|---|---|
| CN106985962B (en) * | 2017-05-11 | 2022-07-08 | 张家港川梭车业有限公司 | Single-wheel drive three-gear speed change device |
| CN106985964B (en) * | 2017-05-11 | 2022-05-13 | 张家港川梭车业有限公司 | Movable gear-shifting three-gear speed change device with single-wheel drive pawl |
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