CN207421236U - One kind two keeps off variable speed drive - Google Patents
One kind two keeps off variable speed drive Download PDFInfo
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- CN207421236U CN207421236U CN201721524099.0U CN201721524099U CN207421236U CN 207421236 U CN207421236 U CN 207421236U CN 201721524099 U CN201721524099 U CN 201721524099U CN 207421236 U CN207421236 U CN 207421236U
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- wheel
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Abstract
The utility model discloses one kind two to keep off variable speed drive, including：Gear and wheel, the gear include：Final drive shaft, speed changer frame and driven shaft, the both ends of the final drive shaft are connected respectively with hub for vehicle wheel, the final drive shaft is equipped with wheel for inputting, output wheel and driving wheel, the wheel for inputting is sheathed on final drive shaft and can make radial rotating and axial movement with respect to final drive shaft, the wheel for inputting is equipped with the first engaging section and the second engaging section, the driving wheel is equipped with and matched 3rd engaging section of the first engaging section, the final drive shaft is equipped with and matched 4th engaging section of the second engaging section, the output wheel is fixedly connected with final drive shaft, the driven shaft be equipped with the first driven wheel matched with driving wheel and with matched second driven wheel of output wheel, first driven wheel is fixedly connected with the second driven wheel with driven shaft respectively, so as to reduce kinetic equation loss.
Description
【Technical field】
The utility model is related to technical field of bicycles, and in particular to one kind two keeps off variable speed drive.
【Background technology】
Joining shown in Fig. 1, Fig. 1 discloses a kind of two gears speed change gear of the prior art, including：Speed changer frame 1`,
The input shaft 2` and output shaft 3` being installed in speed changer frame 1`, the speed changer frame 1` is fixedly connected with vehicle frame or damping
It connects, there are two be equipped between driving wheel 4`, two driving wheel 4` for installation on the input shaft 2` in the speed changer frame 1`
There are two driven wheel 5`, two driving wheel 4` for installation on the input sprocket 6`, the output shaft 3` being fixedly connected with input shaft 2`
Inside be respectively equipped with internal spline, the input shaft 2` be equipped with the matched external splines of above-mentioned internal spline, it is defeated by moving axially
Enter axis 2` to realize gearshift, become between transmission output shaft 3` and axletree by differential mechanism and connection axis connection, this kind of structure
The defects of fast device, is：1st, this kind of speed changer is positioned on the basis of vehicle frame, causes speed changer location and installation more inconvenient, and
And position deviation is susceptible in installation process, so as to influence transmission stability, 2, this kind of transmission output shaft and axletree
Between pass through differential mechanism and connection axis connection so that entire speed changer structure becomes complex；3rd, this kind of speed change gear high speed
Power needs to reach output shaft by the transmission of drive during gear, therefore there are kinetic equation loss, and bicycle is big absolutely when in use
Most time is to use top gear, and less time is using bottom gear, therefore top gear is designed to the gear of dynamic loss
Position, will greatly improve kinetic equation loss of the speed changer during cycling.
Therefore, it is necessary to provide a kind of two gear variable speed drives for solving above-mentioned technical problem.
【Utility model content】
To become to solve the above problems, the purpose of this utility model is to provide a kind of two gears simple in structure, easily manufactured
Fast transmission device.
Technical solution is used by a kind of the utility model：One kind two keeps off variable speed drive, including：Gear and
Wheel, the gear include：Final drive shaft, the speed changer frame being installed on final drive shaft and it is installed on speed changer frame
Interior driven shaft is connected between the final drive shaft and speed changer frame by bearing, the both ends of the final drive shaft respectively with
Hub for vehicle wheel is connected, and the final drive shaft is equipped with wheel for inputting, output wheel and driving wheel, and the wheel for inputting is sheathed on main transmission
It can make on axis and with respect to final drive shaft radial rotating and axial movement, the wheel for inputting is equipped with the first engaging section and the second engagement
Portion, the driving wheel, which is equipped with, to be equipped with and is nibbled with second with matched 3rd engaging section of the first engaging section, the final drive shaft
Matched 4th engaging section in conjunction portion, the driving wheel is sheathed on final drive shaft and can be rotated compared with final drive shaft, described
Output wheel is fixedly connected with final drive shaft, and bearing is equipped between the driven shaft and speed changer frame, and the driven shaft is equipped with
The first driven wheel matched with driving wheel and with matched second driven wheel of output wheel, first driven wheel and second from
Driving wheel is fixedly connected respectively with driven shaft.
Preferably, one kind two in the utility model is kept off variable speed drive and is further arranged to：First engaging section
And second engaging section be internal spline, the 3rd engaging section and the 4th engaging section are external splines.
Preferably, one kind two in the utility model is kept off variable speed drive and is further arranged to：The driving wheel, first
Driven wheel, the second driven wheel and output wheel are gear, and the driving wheel is meshed with the first driven wheel, second driven wheel
It is meshed with output wheel.
Preferably, one kind two in the utility model is kept off variable speed drive and is further arranged to：The driving wheel and
It is connected by the first driving medium between one driven wheel, is connected between second driven wheel and output wheel by the second driving medium
It connects.
Preferably, one kind two in the utility model is kept off variable speed drive and is further arranged to：The driving wheel, first
Driven wheel, the second driven wheel and output wheel are sprocket wheel or belt wheel, first driving medium and the second driving medium for chain or
Transmission belt.
Preferably, one kind two in the utility model is kept off variable speed drive and is further arranged to：The final drive shaft
By one end of freewheel clutch connection or final drive shaft, mutually fixation connects with hub for vehicle wheel respectively between both ends and hub for vehicle wheel
It connects, connected between the other end and hub for vehicle wheel of final drive shaft by bearing.
Preferably, one kind two in the utility model is kept off variable speed drive and is further arranged to：The final drive shaft is
Three-stage axis, including the first shaft part, the second shaft part and the 3rd shaft part being arranged between the first shaft part and the second shaft part, described
The diameter of three shaft parts is less than the diameter of the first shaft part and the second shaft part, and the 3rd shaft part is solid shafting, first shaft part and
Second shaft part is hollow shaft.
Preferably, one kind two in the utility model is kept off variable speed drive and is further arranged to：3rd shaft part with
Interference fit or threaded connection are respectively adopted between first shaft part and the second shaft part.
Preferably, one kind two in the utility model is kept off variable speed drive and is further arranged to：The wheel for inputting includes
Axle sleeve and the wheel body being installed on axle sleeve are equipped with freewheel clutch between the wheel body and axle sleeve.
Compared with prior art, the utility model has the advantages that：Final drive shaft in the utility model is direct
It is connected with wheel, intermediate without being attached again by differential mechanism, so as to simplify structure, in addition entire variable speed drive is
It is positioned on the basis of axletree so that installation positioning is more convenient, ensure that good transmission stability, the utility model
In variable speed drive top gear when power direct 1:1 output, power needs not move through the transmission of driven wheel, therefore substantially reduces
Kinetic equation loss improves the performance of riding of bicycle.
【Description of the drawings】
Fig. 1 is the structure diagram of speed change gear in the prior art.
Fig. 2 is the main structure diagram of variable speed drive in the utility model.
Fig. 3 is the schematic cross-sectional view of variable speed drive in the utility model.
Fig. 4 is the partial enlarged view at A in Fig. 3.
Fig. 5 is the decomposition texture schematic diagram of variable speed drive in the utility model.
In Fig. 1：1`, speed changer frame, 2`, input shaft, 3`, output shaft, 4`, driving wheel, 5`, driven wheel, 6`, input chain
Wheel.
Fig. 2 is into Fig. 5：1st, left wheel, 2, right wheel, 3, final drive shaft, the 30, first shaft part, the 31, second shaft part, 32,
Three shaft parts, the 320, first external splines, 33, wheel for inputting, 330, axle sleeve, 331, wheel body, the 332, first internal spline, flower in 333, second
Key, 34, driving wheel, the 340, second external splines, 35, output wheel, 4, speed changer frame, 5, driven shaft, the 50, first driven wheel, 51,
Second driven wheel, the 6, first freewheel clutch, the 7, second freewheel clutch, 8, clutch shaft bearing, 9, second bearing.
【Specific embodiment】
A kind of two gears variable speed drive described in the utility model is made below by specific embodiment further detailed
Thin description.
Join shown in Fig. 2 to Fig. 5, the utility model discloses one kind two to keep off variable speed drive, including：Left wheel 1, right vehicle
Wheel 2, final drive shaft 3, the speed changer frame 4 being installed on final drive shaft 3 and the driven shaft 5 being installed in speed changer frame 4, institute
Final drive shaft 3 is stated as three-stage axis, including the first shaft part 30, the second shaft part 31 and is arranged at the first shaft part 30 and the second shaft part 31
Between the 3rd shaft part 32, the 3rd shaft part 32 be solid shafting, 30 and second shaft part 31 of the first shaft part be hollow shaft,
The diameter of 3rd shaft part 32 is less than the diameter of the first shaft part 30 and the second shaft part 31, and so designing is advantageous in that：Both made
Main drive shaft 3 has enough structural strengths, and reduces the size of speed changer, in the present embodiment, the first axle
The 30, second shaft part 31 of section is sheathed on the 3rd shaft part 32 and realizes fixation by being interference fitted between the 3rd shaft part 32 respectively,
Certainly in other implementations, other fixed forms such as threaded connection can also be used, can equally realize this practicality
It is new.In the present embodiment, connected between 1 wheel hub of first shaft part 30 and left wheel by the first freewheel clutch 6, institute
It states and is connected by the second freewheel clutch 7 between 2 wheel hub of the second shaft part 31 and right wheel, certainly in other implementations,
Be fixedly connected between first shaft part 30 and 1 wheel hub of left wheel, between 2 wheel hub of the second shaft part 31 and right wheel by bearing connection or
It connected by bearing between the first shaft part of person 30 and 1 wheel hub of left wheel, be fixedly connected between the second shaft part 31 and right 2 wheel hub of wheel
It can realize the utility model.
Clutch shaft bearing 8, the final drive shaft 3 are equipped between 3rd shaft part 32 of the final drive shaft 3 and speed changer frame 4
Wheel for inputting 33, driving wheel 34 and output wheel 35 are equipped with, the driving wheel 34 is arranged between wheel for inputting 33 and output wheel 35, institute
It states wheel for inputting 33 to relatively rotate and move axially compared with final drive shaft 3, the wheel for inputting 33 includes axle sleeve 330 and installation
The 3rd freewheel clutch (not shown), effect are equipped between the wheel body 331 on axle sleeve 330, the axle sleeve 330 and wheel body 331
It is：When wheel for inputting 33 is inputted without power, wheel remains able to be rotated further with inertia, and one end of the axle sleeve 330 is set
There is the first internal spline 332, the 3rd shaft part 32 of the final drive shaft 3 is equipped with and flower outside the first internal spline 332 matched first
Key 320, the wheel for inputting 33 can be moved axially compared with the 3rd shaft part 32, and the other end of 33 axle sleeve 330 of wheel for inputting is set
There is the second internal spline 333, one end of the driving wheel 34 is equipped with and 333 matched second external splines 340 of the second internal spline, institute
It states driving wheel 34 to be sheathed on the 3rd shaft part 32 and can rotate compared with the 3rd shaft part 32,35 and first shaft part 30 of output wheel
It is fixedly connected.In the present embodiment, engaged by spline fitted realization between the wheel for inputting 33 and driving wheel 34, existed certainly
Engagement can also be realized in other embodiments using other engagement systems such as steel ball steel tank, pallet piece engagements.
In present embodiment, 332 and second internal spline 333 of the first internal spline is respectively arranged at the both sides of axle sleeve 330, certainly at it
In his embodiment, 332 and second internal spline 333 of the first internal spline may also set up in the same side, can equally realize
The utility model.
Be equipped with second bearing 9 between the driven shaft 5 and speed changer frame 4, one end of the driven shaft 5 be equipped with first from
Driving wheel 50, the other end of the driven shaft 5 are equipped with the second driven wheel 51, and first driven wheel 50, the second driven wheel 51 are distinguished
It is fixedly connected with driven shaft 5, is connected between first driven wheel 50 and driving wheel 34 by the way that the first driving medium is (not shown),
Pass through the connection (not shown) of the second driving medium, in the present embodiment, institute between second driven wheel 51 and output wheel 35
Driving wheel 34, the first driven wheel 50, the second driven wheel 51 and output wheel 35 are stated as sprocket wheel, first driving medium and the second biography
Dynamic medium is chain, certainly in other implementations, the driving wheel 34, the first driven wheel 50, the second driven wheel 51 and
Output wheel 35 or belt wheel, first driving medium and the second driving medium or transmission belt, equally can be real
Existing the utility model does not use driving medium, directly by driving wheel 34, the first driven wheel 50, the second driven wheel 51 and defeated
Go out wheel 35 and be designed to gear drive, can equally realize the utility model.
The operation principle of speed change gear is in the present embodiment：During top gear, the first internal spline in 33 axle sleeve 330 of wheel for inputting
It being meshed with the first external splines 320 on the 3rd shaft part 32 of final drive shaft 3, power is inputted by wheel for inputting 33, and 1：1 by main transmission
Axis 3 directly exports and drives the vehicle wheel rotation at 3 both ends of final drive shaft, during bottom gear, moves axially wheel for inputting 33 so that wheel for inputting
The first internal spline in 33 is disengaged from the first external splines 320 on final drive shaft 3, and is made in the second of 33 one end of wheel for inputting
Spline 333 is meshed with second external splines 340 of 34 one end of driving wheel, and during bottom gear, power is inputted by wheel for inputting 33, due to defeated
Enter wheel 33 to be meshed with driving wheel 34, therefore driving wheel 34 rotates, due to passing through chain between 34 and first driven wheel 50 of driving wheel
Item is driven, therefore power passes to the first driven wheel 50, due to the first driven wheel 50, the second driven wheel 51 respectively with driven shaft 5
Be fixedly connected, therefore the second driven wheel 51 rotates, due between the second driven wheel 51 and output wheel 35 by chain drive,
Output wheel 35 rotates, since output wheel 35 is fixedly connected with final drive shaft 3, power be ultimately transferred to final drive shaft 3 and by
Final drive shaft 3 carries out power output.
Final drive shaft 3 in the utility model is directly connected with wheel, intermediate without being attached again by differential mechanism, from
And structure is simplified, in addition entire variable speed drive is positioned on the basis of axletree so that installation positioning is more square
Just, it ensure that good transmission stability, power direct 1 during variable speed drive top gear in the utility model:1 output,
Power needs not move through the transmission of driven wheel, therefore greatly reduces kinetic equation loss, improves the performance of riding of bicycle.
The reality that the principles and effects of the utility model creation is only illustrated in the above embodiments and part uses
Example is applied, is rather than limited the present invention；It should be pointed out that for those of ordinary skill in the art, this is not being departed from
On the premise of utility model creates design, various modifications and improvements can be made, these belong to the protection of the utility model
Scope.
Claims (9)
1. one kind two keeps off variable speed drive, which is characterized in that including：Gear and wheel, the gear include：It is main
Transmission shaft, the speed changer frame being installed on final drive shaft and the driven shaft being installed in speed changer frame, the final drive shaft
It is connected between speed changer frame by bearing, the both ends of the final drive shaft are connected respectively with hub for vehicle wheel, the main biography
Moving axis is equipped with wheel for inputting, output wheel and driving wheel, and the wheel for inputting is sheathed on final drive shaft and can make with respect to final drive shaft
Radial rotating and axial movement, the wheel for inputting be equipped with the first engaging section and the second engaging section, the driving wheel be equipped with
Matched 3rd engaging section of first engaging section, the final drive shaft are equipped with and are engaged with the second engaging section the matched 4th
Portion, the driving wheel are sheathed on final drive shaft and can be rotated compared with final drive shaft, and the output wheel is fixed with final drive shaft
Connection, is equipped with bearing between the driven shaft and speed changer frame, the driven shaft is equipped with and driving wheel matched first
Driven wheel and with matched second driven wheel of output wheel, first driven wheel fixes with the second driven wheel with driven shaft respectively
Connection.
2. one kind two as described in claim 1 keeps off variable speed drive, it is characterised in that：It first engaging section and second nibbles
Conjunction portion is internal spline, and the 3rd engaging section and the 4th engaging section are external splines.
3. one kind two as described in claim 1 keeps off variable speed drive, it is characterised in that：The driving wheel, the first driven wheel,
Second driven wheel and output wheel are gear, and the driving wheel is meshed with the first driven wheel, second driven wheel and output
Wheel is meshed.
4. one kind two as described in claim 1 keeps off variable speed drive, it is characterised in that：The driving wheel and the first driven wheel
Between by the first driving medium connect, between second driven wheel and output wheel pass through the second driving medium connect.
5. one kind two as claimed in claim 4 keeps off variable speed drive, it is characterised in that：The driving wheel, the first driven wheel,
Second driven wheel and output wheel are sprocket wheel or belt wheel, and first driving medium and the second driving medium are chain or transmission belt.
6. one kind two as described in claim 1 keeps off variable speed drive, it is characterised in that：The both ends of the final drive shaft and vehicle
It is mutually fixedly connected with hub for vehicle wheel by one end of freewheel clutch connection or final drive shaft respectively between wheel wheel hub, main transmission
It is connected between the other end and hub for vehicle wheel of axis by bearing.
7. one kind two as described in claim 1 keeps off variable speed drive, it is characterised in that：The final drive shaft is three-stage
Axis, including the first shaft part, the second shaft part and the 3rd shaft part being arranged between the first shaft part and the second shaft part, the 3rd shaft part
Diameter be less than the diameter of the first shaft part and the second shaft part, the 3rd shaft part is solid shafting, first shaft part and the second axis
Section is hollow shaft.
8. one kind two as claimed in claim 7 keeps off variable speed drive, it is characterised in that：3rd shaft part and the first shaft part
And second be respectively adopted interference fit or threaded connection between shaft part.
9. one kind two as described in claim 1 keeps off variable speed drive, it is characterised in that：The wheel for inputting includes axle sleeve and peace
Loaded on the wheel body on axle sleeve, freewheel clutch is equipped between the wheel body and axle sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721524099.0U CN207421236U (en) | 2017-11-15 | 2017-11-15 | One kind two keeps off variable speed drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721524099.0U CN207421236U (en) | 2017-11-15 | 2017-11-15 | One kind two keeps off variable speed drive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207421236U true CN207421236U (en) | 2018-05-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721524099.0U Active CN207421236U (en) | 2017-11-15 | 2017-11-15 | One kind two keeps off variable speed drive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207421236U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725693A (en) * | 2017-11-15 | 2018-02-23 | 张家港川梭车业有限公司 | One kind two keeps off variable speed drive |
-
2017
- 2017-11-15 CN CN201721524099.0U patent/CN207421236U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725693A (en) * | 2017-11-15 | 2018-02-23 | 张家港川梭车业有限公司 | One kind two keeps off variable speed drive |
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