CN108194584A - A kind of speed change gear - Google Patents
A kind of speed change gear Download PDFInfo
- Publication number
- CN108194584A CN108194584A CN201810194786.3A CN201810194786A CN108194584A CN 108194584 A CN108194584 A CN 108194584A CN 201810194786 A CN201810194786 A CN 201810194786A CN 108194584 A CN108194584 A CN 108194584A
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- China
- Prior art keywords
- gear
- driven
- driving
- shaft
- speed change
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 230000008859 change Effects 0.000 title claims abstract description 43
- 210000000515 tooth Anatomy 0.000 claims abstract description 72
- 239000004020 conductor Substances 0.000 claims abstract description 3
- 240000007643 Phytolacca americana Species 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 14
- 230000007246 mechanism Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/20—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially using gears that can be moved out of gear
- F16H3/34—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially using gears that can be moved out of gear with gears shiftable otherwise than only axially
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/32—Gear shift yokes, e.g. shift forks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/17—Toothed wheels
- F16H2055/173—Crown gears, i.e. gears have axially arranged teeth
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
Abstract
The invention discloses a kind of speed change gear, particularly a kind of speed change gear simple in structure belongs to gear arrangement technical field；The device includes driving shaft and driven shaft, the driving shaft is assembled with driven shaft coaxial inner conductor, and there is gap each other, the both sides of the driving shaft and driven shaft are respectively arranged with plate body, the plate body assembles in a manner that plate face is opposite, and multiple annular tooths are both provided on the inside of plate body and are correspondingly arranged on each plate body；A kind of speed change gear of the present invention is simple in structure, reduces the overall volume of speed change gear using disk-like structure, in addition, the structure can effectively realize the function of speed change.
Description
Technical field
The present invention relates to a kind of speed change gear, particularly a kind of speed change gear simple in structure belongs to gear arrangement skill
Art field.
Background technology
Speed changer is for changing the rotating speed from engine and the mechanism of torque, it can be fixed or stepping changes output shaft
With input shaft gearratio, also known as gearbox.Speed changer is made of variable transmission mechanism and operating mechanism, some automobiles are also dynamic
Output mechanism.Transmission mechanism ordinary gear multi-purpose greatly is driven, also some Planetary Gear Transmissions.Ordinary gear transmission shifting mechanism
Generally with shifting slide gear and synchronizer etc..
Gearbox is made of variable transmission mechanism and selector gear two parts.The main function of variable transmission mechanism is
Change numerical value and the direction of torque and rotating speed；The main function of operating mechanism is control transmission mechanism, realizes transmission ratio
Transformation, that is, gear shift is realized, to reach variable-speed torque-converting.
Invention content
The goal of the invention of the present invention is：In view of the above problems, a kind of speed change gear is provided, the speed change gear knot
Structure is simple, and occupied space is smaller.
The technical solution adopted by the present invention is as follows：
A kind of speed change gear, including driving shaft and driven shaft, which assembles with driven shaft coaxial inner conductor, and each other
With gap, the both sides of the driving shaft and driven shaft are respectively arranged with plate body, which assembles in a manner that plate face is opposite, plate body
Inside be both provided with multiple annular tooths and be correspondingly arranged on each plate body, each annular tooth is filled along driving shaft and driven shaft
With axisymmetrical, be provided with one group of driving gear on driving shaft, on driven shaft on be provided with one group of driven gear, the driving gear
Between being assemblied in annular tooth respectively with driven gear, which assembles axis certainly with driven gear along driving shaft and driven shaft
By rotating, driving gear and driven gear have gap, the driving gear and driven tooth between driving shaft and driven shaft respectively
The side of wheel be respectively arranged with driving shaft and driven shaft synchronous rotation fixture block, the fixture block can drive respectively driving gear and
It is driven by driven gear.
A kind of speed change gear of the present invention, further includes the assembled shaft for assembling plate body, pilot hole is provided on plate body, leads to
Crossing pilot hole makes plate body rotatably be assemblied in assembled shaft.
The present invention a kind of speed change gear, annular tooth include concentric diameter not wait first annular tooth, the second annular tooth,
Third annular tooth and fourth annular tooth.Which is designed with conducive to promotion speed changing effect.
Further, driving gear includes the first driving gear and the second driving gear, which is assemblied in
Between first annular tooth where driving shaft, which is assemblied between the second annular tooth where driving shaft.
Further, it is provided with fixture block between first driving gear and the second driving gear.
Further, the driven gear include the first driven gear, the second driven gear, third driven gear and the 4th from
Moving gear, the first driven gear are assemblied between the second annular tooth where driven shaft, and the second driven gear is assemblied in driven shaft
Between the third annular tooth at place, third driven gear and the 4th driven gear are symmetrically assemblied between fourth annular tooth and with
One driven gear and the assembling of the second driven gear central axes, driven shaft pass through the 4th driven gear.The design of the structure is not only
It realizes the speed change advanced, while also realizes the function of retroversion.
Further, between the first driven gear and the second driven gear and third driven gear and the 4th driven gear
Between be respectively arranged with fixture block.
Further, be the cooperation of the gear teeth/card slot between fixture block and driven gear or driving gear, fixture block with driving shaft and from
Coordinate between moving axis for key.Which effectively realizes transmission effect and speed governing effect.
Further, fixture block is provided with for fork slot, and shift fork is equipped in the fork slot, and shift fork is connected by poke rod
In lever with the movement of control fixture block.
Further, which is respectively cone tooth cooperation between driving gear and driven gear, and cone tooth diameter is smaller
One end be respectively positioned on close to annular tooth center one end.
In conclusion by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
1st, a kind of speed change gear of the invention is simple in structure, reduces the overall volume of speed change gear using disk-like structure, in addition, should
Structure can effectively realize the function of speed change；
2nd, it realizes better speed changing effect by the design of specific annular tooth, driven gear and driving gear, and utilizes and be somebody's turn to do
Mode is capable of the stress problem of efficient balance plate body both sides, realizes preferably transmission effect；
3rd, the design of fixture block makes this programme carry out better variable speed operation, effectively improves the speed changing effect of entire speed change gear；
4th, with reference to 2 driving gears and realize two-stage speed change design can effectively solve conventional transmissions driving gear damage
Bad the problem of cannot reusing, the design can still keep normally rotating, carry in the case where single driving gear damages
High emergency capability.
Description of the drawings
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein：
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is the structure diagram of vertical view of the present invention；
Fig. 3 is the assembly method schematic diagram between fixture block and gear of the present invention.
It is marked in figure：1- plate bodys, 2- driving shafts, 3- driven shafts, 4- annular tooths, the first annular teeth of 41-, the second annulars of 42-
Tooth, 43- thirds annular tooth, 44- fourth annulars tooth, 5- driving gears, the first driving gears of 51-, the second driving gears of 52-, 6-
Driven gear, the first driven gears of 61-, the second driven gears of 62-, 63- thirds driven gear, the 4th driven gears of 64-, 7- cards
Block, 8- assembled shafts, 9- fork slots, 10- poke rods, 11- levers, 12- card slots, 13- locating pieces.
Specific embodiment
All features or disclosed all methods disclosed in this specification or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
Any feature disclosed in this specification, unless specifically stated, can be equivalent by other or with similar purpose
Alternative features are replaced.That is, unless specifically stated, each feature is an example in a series of equivalent or similar characteristics
.
Embodiment
A kind of speed change gear, as shown in Figure 1, including driving shaft 2 and driven shaft 3, the driving shaft 2 and driven shaft 3 are coaxial
The heart is traditional thread binding to match, and has gap each other, and the both sides of the driving shaft 2 and driven shaft 3 are respectively arranged with plate body 1, the plate body 1 with
The opposite mode of plate face is assembled, and the inside of plate body 1 is both provided with multiple annular tooths and is correspondingly arranged on each plate body, actively
Be provided with one group of driving gear 5 on axis 2,3 on driven shaft on be provided with one group of driven gear 6, the driving gear 5 and driven gear
6 are assemblied between annular tooth respectively, which assembles axis along driving shaft 2 and driven shaft 3 with driven gear 6 and freely turn
Dynamic, driving gear 5 and driven gear 6 have gap, the driving gear 5 and driven tooth between driving shaft 2 and driven shaft 3 respectively
The side of wheel 6 is respectively arranged with the fixture block 7 with driving shaft and driven shaft synchronous rotation, which can drive driving gear respectively
And it is driven by driven gear.
In design principle based on above-mentioned specific embodiment, specifically, each annular tooth 4 is along driving shaft 2 and driven shaft 3
Assemble axisymmetrical.And in specific embodiment, in the above process, driving gear 5 and driven gear 6 respectively with driving shaft
It is with gap between 2 and driven shaft 3：There is gap between driving gear 5 and driving shaft 2, driven gear 6 and driven shaft 3 it
Between have gap.Certainly, the gap between driving shaft 2 and driven shaft 3 is 1-3mm respectively for driving gear 5 and driven gear 6.
Which effectively ensures smallization of single unit system.Gap between driven shaft and driving shaft is 1-3mm.
In design basis based on above-mentioned specific embodiment, in another specific embodiment, further include to assemble
The assembled shaft 8 of plate body is provided with pilot hole on plate body 1, plate body is made rotatably to be assemblied in assembled shaft by pilot hole.Specifically
, which is fixed setting, such as is fixed on external device (ED), and carries out entire speed change gear by the assembled shaft
Fixing assembling, and position.
Based on above-mentioned design requirement, in actual application, which can be used plate face as polygonal shape.Make
For the design more optimized, as shown in Fig. 2, in the design, which uses plate face as circular shape.The design method can be just
In the assembling of the speed change gear, especially in the transmission process of power, plate body stress equalization, the stress between annular tooth and gear
Also it is more balanced.Especially in the rotation process of high speed, be even more conducive to the stability of rotation.
In specific design process is carried out to annular tooth, in another specific embodiment, annular tooth 4 includes concentric
First annular tooth 41, the second annular tooth 42, third annular tooth 43 and the fourth annular tooth 44 that diameter does not wait.Certainly, annular tooth
Quantity can be it is multiple, can be 1, which is Synchronous Transmission.More than certain at least two it can realize preferable speed change
Mode.It can be 3,5 or 6.
In design principle based on above-mentioned specific embodiment, in another specific embodiment, speed-change process is carried out
Into a specific design, driving gear 5 includes the first driving gear 51 and the second driving gear 52, which assembles
Between the first annular tooth where driving shaft, second driving gear 52 be assemblied in the second annular tooth where driving shaft it
Between.In embodiments, using two driving tooths as power intake.More specifically, as that level-one driving tooth conduct
Input terminal is just to carry out selection according to demand, therefore, is provided between 51 and second driving gear 52 of the first driving gear
Fixture block.And in this design, the device of fixture block then alternatively.And pass through fixture block by the way that driving wheel is driven to rotate.
And in the requirement being actively designed, it is specifically designed for driven tooth, wherein a specific embodiment party
In formula, which includes the first driven gear 61, the second driven gear 62,63 and the 4th driven tooth of third driven gear
Wheel 64, the first driven gear 61 are assemblied between the second annular tooth where driven shaft, and the second driven gear 62 is assemblied in driven
Between third annular tooth where axis, 63 and the 4th driven gear 64 of third driven gear is symmetrically assemblied between fourth annular tooth
And assembled with the first driven gear and the second driven gear central axes, driven shaft 3 passes through the 4th driven gear.Specifically, first
It is set respectively between 61 and second driven gear 62 of driven gear and between 63 and the 4th driven gear 64 of third driven gear
There is fixture block.In the present embodiment, as output terminal, it is the first driven gear 61, the second driven tooth to be used as positive direction
Wheel 62, third driven gear 63.And the 4th driven gear 64 is the design as negative direction.With reference to driving gear and driven gear
Design as cycle gearbox component in then for 6 into 2 fall design structures.And in reversing gear, in order to avoid speed mistake
Soon, the 4th driven gear is assemblied between third annular tooth, and with the second driven gear about assembled shaft axisymmetrical.
And combine above-mentioned specific embodiment on, speed change gear in actual use, driven gear and driving gear
Quantity and assembly method can realize different gear ratio, be also not excluded for using reversed use, and in the negative direction, then
Cancel the 4th driven wheel.
In design principle based on above-mentioned specific embodiment, in another specific embodiment, as shown in figure 3, fixture block 7
It is the gear teeth/card slot cooperation between driven gear or driving gear, coordinates between fixture block 7 and driving shaft and driven shaft for key.Make
To be more specifical, card slot 12 is provided on the fixture block 7, is provided on gear and the locating piece of pocket matches 13.It specifically, should
Card slot 12 at least has 3 respectively with locating piece 13.The card slot 12 and locating piece 3 are distributed for circumference array.Certainly, the fixture block 7
Can be that the gear teeth coordinate between gear, fixture block is provided at both ends with internal tooth, matched external tooth is provided on gear.And in fixture block 7
A plurality of keyway is evenly distributed on cooperation between rotation axis, driving shaft and driven shaft, is fixedly installed on the inside of fixture block pair
The key answered, and pass through key and realize slip with keyway.In gearbox field, which also becomes spline fitted, that is, is set in fixture block
It is equipped with internal spline, rotation axis（Driving shaft and driven shaft）On be provided with external splines.
More specifically, the fixture block between third driven gear and the 4th driven gear is additionally provided with groove, which uses
In assembling assembled shaft 8, there is gap between the assembled shaft 8 and fixture block.
Certainly, in order to preferably realize the transformation of gear, in another specific embodiment, the annular tooth 4 respectively with master
It is respectively positioned between moving gear and driven gear for cone tooth cooperation, the smaller one end of cone tooth diameter close to annular tooth center one end.It should
Mode is inevitable, can only in this way realize the engagement of cone tooth.
In design principle based on above-mentioned specific embodiment, in another specific embodiment, the number of teeth of the annular tooth 4
For even number.
Based in above-mentioned specific embodiment, driven gear bores tooth with driving gear for equidimension.The design of which
The effective height for ensureing annular tooth is certain, while ensures the equilibrium of stress.It is of course also possible to use size is differed, therefore,
The driven gear or/and driving gear assembled in same annular tooth is equidimension.
As more specifical, a kind of speed change of speed change gear in the design can determine the number of gears according to actual conditions
Amount increases the conversion that a gear will increase multistage speed.
The design is applied in automobile, and speed change can be effectively realized using above-mentioned specific embodiment.Certainly in tradition
Structure unlike, for dish type in the design, in addition being designed on traditional driven shaft increases driving shaft in the structure of shift fork
Has the structure of shift fork, which effectively raises the shifting efficiency of speed change gear.
The design is applied to lathe, milling machine when on machinery processing apparatus, can increase annular tooth quantity or driving cog
The quantity of wheel, so as to provide more gear shift modes.
In conclusion a kind of speed change gear of the present invention is simple in structure, reduce the entirety of speed change gear using disk-like structure
Volume, in addition, the structure can effectively realize the function of speed change, and the transmission gear of identical size improves the general of gear
Property, being conducive to maintenance/repair to the gearbox later stage provides, and improves working efficiency.
The invention is not limited in aforementioned specific embodiments.The present invention, which expands to, any in the present specification to be disclosed
The step of new feature or any new combination and any new method or process disclosed or any new combination.
Claims (10)
1. a kind of speed change gear, it is characterised in that：Including driving shaft（2）And driven shaft（3）, the driving shaft（2）With driven shaft
（3）Coaxial inner conductor assembles, and has gap, the driving shaft each other（2）With driven shaft（3）Both sides be respectively arranged with plate body
（1）, the plate body（1）It is assembled in a manner that plate face is opposite, plate body（1）Inside be both provided with multiple annular tooths and be correspondingly arranged
On each plate body, driving shaft（2）On be provided with one group of driving gear（5）, on driven shaft（3）On be provided with one group of driven gear
（6）, the driving gear（5）With driven gear（6）It is assemblied between annular tooth respectively, the driving gear（5）With driven gear（6）
Along driving shaft（2）And driven shaft（3）Assembling axis is freely rotated, driving gear（5）And driven gear（6）Respectively with driving shaft
（2）And driven shaft（3）Between have gap, the driving gear（5）And driven gear（6）Side be respectively arranged with driving shaft
The fixture block rotated synchronously with driven shaft（7）, the fixture block（7）Driving gear can be driven respectively and driven by driven gear.
2. a kind of speed change gear as described in claim 1, it is characterised in that：Further include the assembled shaft for assembling plate body（8）,
Plate body（1）On be provided with pilot hole, plate body is made rotatably to be assemblied in assembled shaft by pilot hole.
3. a kind of speed change gear as described in claim 1, it is characterised in that：Annular tooth（4）It is not waited including concentric diameter
First annular tooth（41）, the second annular tooth（42）, third annular tooth（43）And fourth annular tooth（44）.
4. a kind of speed change gear as claimed in claim 3, it is characterised in that：Driving gear（5）Including the first driving gear
（51）With the second driving gear（52）, first driving gear（51）It is assemblied between the first annular tooth where driving shaft, it should
Second driving gear（52）It is assemblied between the second annular tooth where driving shaft.
5. a kind of speed change gear as claimed in claim 4, it is characterised in that：First driving gear（51）With the second driving tooth
Wheel（52）Between be provided with fixture block.
6. a kind of speed change gear as claimed in claim 3, it is characterised in that：The driven gear（6）Including the first driven gear
（61）, the second driven gear（62）, third driven gear（63）With the 4th driven gear（64）, the first driven gear（61）Assembling
Between the second annular tooth where driven shaft, the second driven gear（62）Be assemblied in third annular tooth where driven shaft it
Between, third driven gear（63）With the 4th driven gear（64）It is symmetrical be assemblied between fourth annular tooth and with the first driven gear
It is assembled with the second driven gear central axes, driven shaft（3）Across the 4th driven gear.
7. a kind of speed change gear as claimed in claim 6, it is characterised in that：First driven gear（61）With the second driven gear
（62）Between and third driven gear（63）With the 4th driven gear（64）Between be respectively arranged with fixture block.
8. a kind of speed change gear as described in claim 1 or 7, it is characterised in that：Fixture block（7）With driven gear or driving gear
Between for the cooperation of the gear teeth/card slot, fixture block（7）Coordinate between driving shaft and driven shaft for key.
9. a kind of speed change gear as claimed in claim 8, it is characterised in that：Fixture block（7）It is provided with for fork slot（9）, should
Fork slot（9）Shift fork is inside equipped with, shift fork passes through poke rod（10）It is connected to lever（11）With the movement of control fixture block.
10. a kind of speed change gear as described in claim 1, it is characterised in that：The annular tooth（4）Respectively with driving gear and from
It is respectively positioned between moving gear for cone tooth cooperation, the smaller one end of cone tooth diameter close to annular tooth center one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810194786.3A CN108194584A (en) | 2018-03-09 | 2018-03-09 | A kind of speed change gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810194786.3A CN108194584A (en) | 2018-03-09 | 2018-03-09 | A kind of speed change gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108194584A true CN108194584A (en) | 2018-06-22 |
Family
ID=62595509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810194786.3A Pending CN108194584A (en) | 2018-03-09 | 2018-03-09 | A kind of speed change gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108194584A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT202200004529A1 (en) * | 2022-03-10 | 2022-06-10 | Corimag S R L | Gearbox with coaxial front cogwheels of conical shape |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR415557A (en) * | 1910-03-30 | 1910-09-29 | Edouard Delail | Friction cone gearshift and reverse |
| GB191207569A (en) * | 1911-03-28 | 1912-08-29 | Fernand Forest | Improvements in Variable-speed Friction Gearing. |
| GB191307358A (en) * | 1913-03-28 | 1914-03-12 | Laurence Bell | Variable Speed Friction Gear. |
| GB142644A (en) * | 1919-04-22 | 1920-05-13 | Harold Cornelius Reading | Improvements relating to friction gearing |
| GB161254A (en) * | 1920-01-02 | 1921-04-04 | Charles Alfred West | Improvements in or relating to variable speed friction gear |
| CA2618410A1 (en) * | 2005-08-09 | 2007-02-15 | Martin Boudreau | Transmission |
| CN206449165U (en) * | 2016-12-16 | 2017-08-29 | 桑启恒 | A kind of multi-shifting speed variator |
| CN207961430U (en) * | 2018-03-09 | 2018-10-12 | 李醇泽 | A kind of speed change gear |
-
2018
- 2018-03-09 CN CN201810194786.3A patent/CN108194584A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR415557A (en) * | 1910-03-30 | 1910-09-29 | Edouard Delail | Friction cone gearshift and reverse |
| GB191207569A (en) * | 1911-03-28 | 1912-08-29 | Fernand Forest | Improvements in Variable-speed Friction Gearing. |
| GB191307358A (en) * | 1913-03-28 | 1914-03-12 | Laurence Bell | Variable Speed Friction Gear. |
| GB142644A (en) * | 1919-04-22 | 1920-05-13 | Harold Cornelius Reading | Improvements relating to friction gearing |
| GB161254A (en) * | 1920-01-02 | 1921-04-04 | Charles Alfred West | Improvements in or relating to variable speed friction gear |
| CA2618410A1 (en) * | 2005-08-09 | 2007-02-15 | Martin Boudreau | Transmission |
| CN206449165U (en) * | 2016-12-16 | 2017-08-29 | 桑启恒 | A kind of multi-shifting speed variator |
| CN207961430U (en) * | 2018-03-09 | 2018-10-12 | 李醇泽 | A kind of speed change gear |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT202200004529A1 (en) * | 2022-03-10 | 2022-06-10 | Corimag S R L | Gearbox with coaxial front cogwheels of conical shape |
| WO2023170716A1 (en) * | 2022-03-10 | 2023-09-14 | Corimag S.R.L. | Gearbox with gears with conical coaxial front toothed wheels |
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