CN208138399U - A kind of single wheel drive straight line tramples three shift transmissions - Google Patents
A kind of single wheel drive straight line tramples three shift transmissions Download PDFInfo
- Publication number
- CN208138399U CN208138399U CN201820578944.0U CN201820578944U CN208138399U CN 208138399 U CN208138399 U CN 208138399U CN 201820578944 U CN201820578944 U CN 201820578944U CN 208138399 U CN208138399 U CN 208138399U
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- wheel
- ratchet
- pallet piece
- straight line
- driving axis
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Abstract
The utility model relates to a kind of single wheel drive straight lines to trample three shift transmissions, including：Center driving axis, wheel hub, the first planetary transmission, the second planetary transmission, pawl transmission mechanism and gearshift, first planetary transmission include：First centre wheel, first planet carrier, the first planetary gear and the first gear ring, second planetary transmission include：Second centre wheel, the second planet carrier, the second planetary gear and the second gear ring, second planet carrier and the first gear ring form sub-assembly, and the pawl transmission mechanism includes：Pallet piece frame, at least one pallet piece, the first ratchet being set on first planet carrier or wheel hub, the second ratchet being set on sub-assembly and the third ratchet being set on the second gear ring, radial positioning is formed between the pallet piece frame and center driving axis to be in axial sliding connection, the pallet piece frame is located at the inside of the first ratchet, the second ratchet and third ratchet radially, the diameter dimension for thus greatly reducing speed changer, alleviates weight.
Description
【Technical field】
The utility model relates to bicycle arts more particularly to a kind of single wheel drive straight line to trample three shift transmissions.
【Background technique】
Bicycle speed-varying unit is divided into internal speed changer and two kinds of outer speed changer, outer speed changer be use open link chain mechanism for
Transmission system transforms to chain by stirring the selector being installed in front of bicycle and realizes different chains on different flywheels
Transmission ratio is easier to get rusty since outer speed changer is exposed outside, and is easy the interference by external force, so through
Often periodic maintenance is needed to maintain, internal speed changer mainly using planetary gear mechanism as transmission main body, is sealed in inside flower-drum,
By multilayer special seal material protection, so rainwater, dust, grease etc. cannot be introduced into, so there is no need to time-based maintenances, realize and exempt from
The advantages of maintenance.The generally existing following defect of internal speed changer now in the art：1, internal speed changer radially, ratchet setting
Inside, pawl and pallet piece frame are arranged outside, therefore it is larger not only result in entire speed changer radial dimension, and also results in pawl
Part frame is unstable in the process of moving gear shift；2, general 2.3~3 times of speed ratios are defeated when internal speed changer top gear in the prior art
Out, energy loss is increased, transmission efficiency is reduced because to pass through the transmission of planetary transmission when top gear；3, existing
There is the internal speed changer starting speed in technology relatively high, therefore can not be suitable for requiring straight line treadled cycle of the low speed than starting.
It is therefore desirable to provide a kind of single wheel drive straight line of solution above-mentioned technical problem to trample three shift transmissions.
【Utility model content】
To solve the above problems, the purpose of this utility model is to provide a kind of steady, lesser lists of diameter dimension of shifting gears
Wheel drive straight line tramples three shift transmissions.
To achieve the above object, the technical solution that the utility model is taken is：A kind of single wheel drive straight line tramples the change of three gears
Fast device, including：Center driving axis, wheel hub and the planetary transmission being set between center driving axis and wheel hub, pawl driver
Structure and gearshift, the both ends of the center driving axis are respectively equipped with wheel for inputting, set between the wheel for inputting and center driving axis
There is freewheel clutch, the planetary transmission includes：First planetary transmission and the second planetary transmission, first planet become
Fast device includes：First centre wheel, first planet carrier, the first planetary gear and the first gear ring, second planetary transmission include：The
Two centre wheels, the second planet carrier, the second planetary gear and the second gear ring, during first centre wheel, the second centre wheel are sheathed on
It is mutually fixed on heart transmission shaft and with vehicle frame, the center driving axis can be rotated relative to the first centre wheel, the second centre wheel, described
First planet carrier is fixedly connected or is integrally formed with wheel hub, and second planet carrier is integrally formed or is fixedly connected with the first gear ring
Sub-assembly is formed, the pawl transmission mechanism includes：Pallet piece frame, at least one pallet piece, the first ratchet, the second ratchet and
Three ratchets, the pallet piece are set on pallet piece frame, and the pallet piece frame is equipped with for controlling pallet piece initial position
Elastic component, first ratchet are set on first planet carrier or wheel hub, and second ratchet is set on sub-assembly, and described
Three ratchets are set on the second gear ring, and the pallet piece frame is sheathed on center driving axis and forms diameter between center driving axis
It being in axial sliding connection to positioning, the pallet piece frame is located at the inside of the first ratchet, the second ratchet and third ratchet radially,
The gearshift is connected with pallet piece frame.
Preferably, one of the utility model single wheel drive straight line is trampled three shift transmissions and is further arranged to：It is described
It is equipped with driving member, the driving member and wheel hub between wheel hub and center driving axis or first planet carrier is integrally formed or fixed company
It connects, first ratchet is set on the inner peripheral surface of driving member.
Preferably, one of the utility model single wheel drive straight line is trampled three shift transmissions and is further arranged to：It is described
First centre wheel and the second centre wheel are integrally formed.
Preferably, one of the utility model single wheel drive straight line is trampled three shift transmissions and is further arranged to：It is described
Pallet piece is installed on the outer circumference surface of pallet piece frame.
Preferably, one of the utility model single wheel drive straight line is trampled three shift transmissions and is further arranged to：It is described
One end of wheel hub is equipped with first end cover, and the other end of the wheel hub is equipped with second end cover and fastening screw nut, the first end cover, the
Two end caps are fixedly connected respectively with vehicle frame or damping is connect, and pass through respectively between the first end cover and wheel hub and center driving axis
Ball connection, is connected by ball respectively between the second end cover and wheel hub and fastening screw nut.
Preferably, one of the utility model single wheel drive straight line is trampled three shift transmissions and is further arranged to：It is described
Gearshift includes：Gear lever and shift block, the gear lever pass through first end cover and extend outside first end cover, the shift
Block and pallet piece frame form limit connection.
Preferably, one of the utility model single wheel drive straight line is trampled three shift transmissions and is further arranged to：It is described
It is connected through a screw thread between gear lever and shift block.
Preferably, one of the utility model single wheel drive straight line is trampled three shift transmissions and is further arranged to：It is described
Radial positioning between pallet piece frame and center driving axis is in axial sliding connection as spline connection.
Preferably, one of the utility model single wheel drive straight line is trampled three shift transmissions and is further arranged to：It is described
Wheel for inputting is sprocket wheel.
Compared with prior art, the utility model has the advantages that：Speed changer in the utility model is in radial direction
On, including the setting of pallet piece frame, ratchet is arranged outside, and pallet piece frame moving gear shift in ratchet, pallet piece frame is in center driving
Moved axially on axis, shift gears it is more steady, compared with the prior art in radially pallet piece frame setting outside, ratchet setting including
Speed changer structure, the speed changer structure in the utility model greatly reduces the diameter dimension of speed changer, alleviates entire change
The weight of fast device；Speed changer in the utility model can realize low speed than starting, so that riding more easily, in the utility model
Speed changer top gear when 1:1 output, reduces the transmission of planetary transmission, reduces energy loss, improve transmission efficiency.
【Detailed description of the invention】
Fig. 1 is the structural schematic diagram that single wheel drive straight line tramples three shift transmissions in the utility model.
Fig. 2 is the schematic cross-sectional view that single wheel drive straight line tramples three shift transmissions in the utility model.
Fig. 3 is the decomposition texture schematic diagram that single wheel drive straight line tramples three shift transmissions in the utility model.
In figure：1, center driving axis, 10, wheel for inputting, 11, freewheel clutch, 12, external splines, 2, wheel hub, 20, first end
Lid, 21, second end cover, 22, fastening screw nut, the 3, first planetary transmission, the 30, first centre wheel, 31, first planet carrier, 32, the
One planetary gear, the 33, first gear ring, the 4, second planetary transmission, the 40, second centre wheel, the 41, second planet carrier, the 42, second planet
Wheel, the 43, second gear ring, 5, driving member, 6, pawl transmission mechanism, 60, pallet piece frame, 61, pallet piece, the 62, first ratchet, 63,
Second ratchet, 64, third ratchet, 7, gearshift, 70, gear lever, 71, shift block, 8, centre wheel sub-assembly, 9, planet carrier tooth
Enclose sub-assembly.
【Specific embodiment】
Three shift transmissions are trampled to a kind of single wheel drive straight line described in the utility model below by specific embodiment to make
It is described in further detail.
To join shown in Fig. 1 to Fig. 3, a kind of single wheel drive straight line tramples three shift transmissions, including：Center driving axis 1, wheel hub 2
And it is set to the first planetary transmission 3, the second planetary transmission 4, driving member 5, pawl between center driving axis 1 and wheel hub 2
Transmission mechanism 6 and gearshift 7, the both ends of the center driving axis 1 are respectively equipped with wheel for inputting 10, the wheel for inputting 10 and center
Freewheel clutch 11 is equipped between transmission shaft 1, in the present embodiment, the wheel for inputting 10 is sprocket wheel.
First planetary transmission 3 includes：First centre wheel 30, first planet carrier 31, the first planetary gear 32 and first
Gear ring 33, second planetary transmission 4 include：Second centre wheel 40, the second planet carrier 41, the second planetary gear 42 and the second tooth
Circle 43, first centre wheel 30 and the integrated molding of the second centre wheel 40 form centre wheel sub-assembly 8, the centre wheel sub-assembly
8 are sheathed on center driving axis 1 and mutually fix with vehicle frame (not shown), and the center driving axis 1 can be combined relative to centre wheel
Part 8 rotates, and second planet carrier 41 and the integrated molding of the first gear ring 33 form planet carrier gear ring sub-assembly 9, in this embodiment party
In formula, the first planet carrier 31 is set in wheel hub 2 and is integrally formed with wheel hub 2, and the driving member 5 is set in wheel hub 2
And be fixedly connected with wheel hub 2, certainly in other implementations, 31 three of the driving member 5, wheel hub 2 and first planet carrier
Between be fixedly connected or be integrally formed, can be achieved the utility model.
The pawl transmission mechanism 6 includes：60, two pallet pieces 61 of pallet piece frame, the first ratchet 62, the second ratchet 63 and
Third ratchet 64, the pallet piece 61 are set on the outer circumference surface of pallet piece frame 60, and the pallet piece frame 60 is equipped with and is used for
The elastic component (not shown) of pallet piece initial position is controlled, in the present embodiment, first ratchet 62 is set to driving member 5
Inner peripheral surface on, certainly in other implementations, first ratchet 62 may also set up one in first planet carrier 31
End rotates output power with runner hub 2 by first planet carrier 31, can also realize the utility model, or by the first ratchet 62
It being directly arranged on wheel hub 2, the utility model can be achieved, second ratchet 63 is set on planet carrier gear ring sub-assembly 9,
The third ratchet 64 is set on the second gear ring 43, and the pallet piece frame 60 is sheathed on center driving axis 1 and passes with center
It forms radial positioning between moving axis 1 to be in axial sliding connection, in the present embodiment, the radial positioning is in axial sliding connection as flower
Key connection, the i.e. outer circumference surface of center driving axis 1 are equipped with external splines 12, the inner peripheral surface of the pallet piece frame 60 be equipped with
The internal spline (not shown) that external splines 12 matches.The pallet piece frame 60 is located at the first ratchet 62, the second ratchet radially
63 and third ratchet 64 inside, the benefit being arranged in this way is：The diameter dimension for greatly reducing speed changer alleviates entire change
The weight of fast device, and move axially pallet piece frame 60 on center driving axis 1, shift is steady.
One end of the wheel hub 2 is equipped with first end cover 20, and the other end of the wheel hub 2 is equipped with second end cover 21 and simultaneously tight spiral shell
Mother 22, the first end cover 20, second end cover 21 are fixedly connected respectively with vehicle frame or damping is connect, the first end cover 20 and wheel
It is connected by ball between hub 2 and center driving axis 1, is divided between the second end cover 21 and wheel hub 2 and fastening screw nut 22 respectively
It is not connected by ball.
The gearshift 7 includes：Gear lever 70 and shift block 71 pass through spiral shell between the gear lever 70 and shift block 71
Line connection.The gear lever 70 passes through first end cover 20 and extends outside first end cover 20, the shift block 71 and receiving pawl
Part frame 60 forms limit connection.Pallet piece frame 60 is driven to move axially by axial movement gear lever 70.
Single wheel drive straight line tramples the working principle of three shift transmissions and is in the utility model：When one gear, spine is moved axially
Bluff piece frame 60, so that the pallet piece 61 on pallet piece frame 60 is meshed with the first ratchet 62, wheel for inputting 10 passes through freewheel clutch
11 drive center driving axis 1 to rotate, since center driving axis 1 is that radial positioning is in axial sliding connection with pallet piece frame 60,
Center driving axis 1 drives pallet piece frame 60 to rotate, and pallet piece 61 and the rotation of the first ratchet 62 is then driven, due to the first ratchet 62
It is set on driving member 5, therefore driving member 5 rotates synchronously, since driving member 5 is fixedly connected with wheel hub 2, wheel hub 2 is rotated synchronously
Output power, this gear be top gear, 1:1 output power, when high speed, entire power transmission is without planetary transmission, therefore
It reduces energy loss, when middle speed gear, moves axially pallet piece frame 60, so that pallet piece 61 is meshed with the second ratchet 63, it is defeated
Enter wheel 10 and drive center driving axis 1 to rotate by freewheel clutch 11, since center driving axis 1 and pallet piece frame 60 are radial fixed
Position is in axial sliding connection, therefore center driving axis 1 drives pallet piece frame 60 to rotate, and then drives pallet piece 61 and the second ratchet 63
Rotation, is formed by planet carrier gear ring sub-assembly 9 by the second planet carrier 41 and the first gear ring 33 since the second ratchet 63 is set to
On, therefore the first gear ring 33 rotates synchronously, the first gear ring 33 passes through the transmission of the first planetary gear 32, imparts power to the first row
Carrier 31, since first planet carrier 31 and wheel hub 2 are integrally formed, wheel hub 2 rotates output power, this process is primary speed-down
Dynamic process is transmitted, when bottom gear, moves axially pallet piece frame 60, so that pallet piece 61 and third ratchet on pallet piece frame 60
64 are meshed, and wheel for inputting 10 drives center driving axis 1 to rotate by freewheel clutch 11, due to center driving axis 1 and pallet piece
Frame 60 is that radial positioning is in axial sliding connection, therefore center driving axis 1 drives pallet piece frame 60 to rotate, and then drives pallet piece 61
And third ratchet 64 rotates, and since third ratchet 64 is set on the second gear ring 43, the second gear ring 43 is operated synchronously, and described second
Gear ring 43 imparts power to the second planet carrier 41 by the transmission of the second planetary gear 42, due to the second planet carrier 41 and the first tooth
Circle 33 is integrally formed, therefore the first gear ring 33 rotates, and first gear ring 33 is passed power by the transmission of the first planetary gear 32
First planet carrier 31 is passed, since first planet carrier 31 and wheel hub 2 are integrally formed, wheel hub 2 operates synchronously output power, this
Process is that double reduction transmits dynamic process.
In conclusion the speed changer in the utility model is radially, including the setting of pallet piece frame, ratchet is arranged outside,
Pallet piece frame moving gear shift in ratchet, pallet piece frame move axially on center driving axis, shift gears more steady, this is practical new
Speed changer structure in type greatly reduces the diameter dimension of speed changer, alleviates the weight of entire speed changer；The utility model
In speed changer can realize low speed than starting so that ride more easily, 1 when speed changer top gear in the utility model:1 is defeated
Out, the transmission for reducing planetary transmission, reduces energy loss, improves transmission efficiency.
The principles and effects of the utility model creation, and the reality that part uses only is illustrated in the above embodiments
Example is applied, is rather than limited the present invention；It should be pointed out that for those of ordinary skill in the art, not departing from this
Under the premise of utility model concept, various modifications and improvements can be made, these belong to the protection of the utility model
Range.
Claims (9)
1. a kind of single wheel drive straight line tramples three shift transmissions, which is characterized in that including：It center driving axis, wheel hub and is set to
Planetary transmission, pawl transmission mechanism and gearshift between center driving axis and wheel hub, the both ends of the center driving axis
It is respectively equipped with wheel for inputting, freewheel clutch is equipped between the wheel for inputting and center driving axis, the planetary transmission includes：The
One planetary transmission and the second planetary transmission, first planetary transmission include：First centre wheel, first planet carrier,
One planetary gear and the first gear ring, second planetary transmission include：Second centre wheel, the second planet carrier, the second planetary gear and
Second gear ring, first centre wheel, the second centre wheel are sheathed on center driving axis and mutually fix with vehicle frame, the center
Transmission shaft can be rotated relative to the first centre wheel, the second centre wheel, the first planet carrier be fixedly connected with wheel hub or it is integrated at
Type, second planet carrier and the first gear ring are integrally formed or are fixedly connected to form sub-assembly, and the pawl transmission mechanism includes：
Pallet piece frame, at least one pallet piece, the first ratchet, the second ratchet and third ratchet, the pallet piece are set to pallet piece frame
On, the pallet piece frame is equipped with the elastic component for controlling pallet piece initial position, and first ratchet is set to the first row
In carrier or wheel hub, second ratchet is set on sub-assembly, and the third ratchet is set on the second gear ring, the pawl
Part frame is sheathed on center driving axis and forms radial positioning between center driving axis and is in axial sliding connection, described radially
Pallet piece frame is located at the inside of the first ratchet, the second ratchet and third ratchet, and the gearshift is connected with pallet piece frame.
2. a kind of single wheel drive straight line as described in claim 1 tramples three shift transmissions, it is characterised in that：The wheel hub is in
It is equipped with driving member, the driving member and wheel hub or first planet carrier integrated molding between heart transmission shaft or is fixedly connected, described the
One ratchet is set on the inner peripheral surface of driving member.
3. a kind of single wheel drive straight line as described in claim 1 tramples three shift transmissions, it is characterised in that：First center
Wheel is integrally formed with the second centre wheel.
4. a kind of single wheel drive straight line as described in claim 1 tramples three shift transmissions, it is characterised in that：The pallet piece peace
On outer circumference surface loaded on pallet piece frame.
5. a kind of single wheel drive straight line as described in claim 1 tramples three shift transmissions, it is characterised in that：The one of the wheel hub
End is equipped with first end cover, and the other end of the wheel hub is equipped with second end cover and fastening screw nut, the first end cover, second end cover point
It is not fixedly connected with vehicle frame or damping is connect, connected respectively by ball between the first end cover and wheel hub and center driving axis
It connects, is connected respectively by ball between the second end cover and wheel hub and fastening screw nut.
6. a kind of single wheel drive straight line as claimed in claim 5 tramples three shift transmissions, it is characterised in that：The gearshift
Including：Gear lever and shift block, the gear lever pass through first end cover and extend outside first end cover, the shift block and pawl
Part frame forms limit connection.
7. a kind of single wheel drive straight line as claimed in claim 6 tramples three shift transmissions, it is characterised in that：The gear lever with
It is connected through a screw thread between shift block.
8. a kind of single wheel drive straight line as described in claim 1 tramples three shift transmissions, it is characterised in that：The pallet piece frame
Radial positioning between center driving axis is in axial sliding connection to be connect for spline.
9. a kind of single wheel drive straight line as described in claim 1 tramples three shift transmissions, it is characterised in that：The wheel for inputting is
Sprocket wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820578944.0U CN208138399U (en) | 2018-04-23 | 2018-04-23 | A kind of single wheel drive straight line tramples three shift transmissions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820578944.0U CN208138399U (en) | 2018-04-23 | 2018-04-23 | A kind of single wheel drive straight line tramples three shift transmissions |
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| Publication Number | Publication Date |
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| CN208138399U true CN208138399U (en) | 2018-11-23 |
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| CN201820578944.0U Active CN208138399U (en) | 2018-04-23 | 2018-04-23 | A kind of single wheel drive straight line tramples three shift transmissions |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108361331A (en) * | 2018-04-23 | 2018-08-03 | 张家港川梭车业有限公司 | A kind of single wheel drive straight line tramples three shift transmissions |
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2018
- 2018-04-23 CN CN201820578944.0U patent/CN208138399U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108361331A (en) * | 2018-04-23 | 2018-08-03 | 张家港川梭车业有限公司 | A kind of single wheel drive straight line tramples three shift transmissions |
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