CN2146611Y - Stepless variable-diameter drive gearing - Google Patents
Stepless variable-diameter drive gearing Download PDFInfo
- Publication number
- CN2146611Y CN2146611Y CN 92244938 CN92244938U CN2146611Y CN 2146611 Y CN2146611 Y CN 2146611Y CN 92244938 CN92244938 CN 92244938 CN 92244938 U CN92244938 U CN 92244938U CN 2146611 Y CN2146611 Y CN 2146611Y
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- CN
- China
- Prior art keywords
- reducing
- gear assembly
- stepless variable
- tooth bar
- variable
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a stepless variable-diameter drive gearing, which is composed of a main shaft, a center circular plate, a synchronous variable-diameter disk and a tension device. The center circular plate is connected with an arm rod through a movable pivot shaft; the center circular plate is provided with a variable-diameter gear assembly; the variable-diameter gear assembly is connected with the synchronous variable-diameter disk through a sliding pin in sliding way; a convolution balance spring is arranged between the main shaft and the synchronous variable-diameter disk. Because the utility model adopts the variable-diameter gear assembly and the convolution balance spring device, the point meshing of the stepless variable-diameter drive in the prior art is changed into the full-tooth meshing, and the position of the meshing can be changed in the meshing process. The utility model has the advantages of simple structure, convenient operation, etc.
Description
The utility model relates to a kind of mechanical transmission, particularly a kind of stepless variable radius transmission gear means.
In the prior art, adopt a pair of planet tooth bar on keyboard, to slide up and down more, realize the reducing transmission.Described in Chinese patent CN8510570A " a kind of infinitely variable speed device of chain transmission " and the CN2087604U " bicycle automatic speed governing device ".Adopt planetary pinion scroll-up/down on the tooth bar that is provided with on the keyboard, or utilize leverage drive planetary pinion to swing and realize the reducing transmission.The shortcoming of these devices is: total number of teeth in engagement is few, and meshing condition is poor, and the planet tooth bar can not displacement, and the member complexity, and the friction between mating parts is bigger, easy to wear, troublesome poeration.
The purpose of this utility model will provide a kind of stepless variable radius transmission gear means exactly, and its total number of teeth in engagement is many, and meshing condition is better, the displacement of planet tooth bar energy, and member is simple, and the friction between mating parts is less, and is not easy to wear, easy to operate.
The purpose of this utility model is achieved in that it is by main shaft, garden, center plate, reducing dish and tension device are formed synchronously.Garden, center plate (6) is connected with armed lever (12) by movable pivot axis (4), garden, center plate (6) is provided with reducing gear assembly (13), planet tooth bar (1) on the reducing gear assembly (13) is meshed with chain (10), the slack list of chain (10) is provided with tension device, reducing gear assembly (13) is by sliding pin (11) with synchronous reducing dish (9) and is slidingly connected, and is provided with the balance spring that circles round (8) between main shaft (7) and the synchronous reducing dish (9).Reducing gear assembly (13) is made up of planet tooth bar (1), eccentric reducing sheet (2), connecting pin (3), accurate position spring (5) and sliding pin (11); Planet tooth bar (1) is fixed together with eccentric reducing sheet (2).Reducing gear assembly (13) also can be made up of planet tooth bar (1), displacement planetary pinion (22), tooth bar (23), drive plate (24) and pin (25).Tension device is made up of three minor sprockets (20), and wherein, two minor sprockets (20) dead axle is on bearing (19), and another minor sprocket (20) dead axle is on movable armed lever (21).
The utility model is owing to adopted the reducing gear assembly and the device of the balance spring that circles round, so overcome the defective of planetary type gear transmission unit of the prior art, make the point gearing of stepless variable radius transmission process in the prior art into the full-depth tooth engagement, thereby in engagement process, the engaging position can change.The utility model also has simple in structure, flexible and convenient operation, advantage such as applied widely.
Concrete structure of the present utility model is provided by following embodiment and accompanying drawing thereof.
Fig. 1 is the structural representation of stepless variable radius transmission gear means;
Fig. 2 is the left view of stepless variable radius transmission gear means;
Fig. 3 is the differential reducing control gear schematic representation of stepless variable radius transmission gear means;
Fig. 4 is the structural representation of the another kind of reducing gear assembly of stepless variable radius transmission gear means;
Fig. 5 is the left view of the another kind of reducing gear assembly of stepless variable radius transmission gear means;
Fig. 6 is the transmission erection drawing of stepless variable radius transmission gear means.
Wherein, Fig. 1 double as specification digest accompanying drawing.
Among the figure: 1, the planet tooth bar, 2, eccentric reducing sheet, 3, connecting pin, 4, movable pivot axis, 5, accurate position spring, 6, garden, center plate, 7, main shaft, 8, balance spring circles round, 9, synchronous reducing assembly, 10, chain, 11, sliding pin, 12, armed lever, 13, the reducing gear assembly, 14, differential mechanism, 15, reverse gear, 16, the forward gear, 17, idle pulley, 18, idler shaft, 19, bearing, 20, minor sprocket, 21, movable armed lever, 22, the displacement planetary pinion, 23, tooth bar, 24, drive plate, 25, pin.
Reducing process of the present utility model and transmission process (referring to Fig. 1) as described below:
On eccentric reducing sheet (2), rivet by the centre of accurate position spring (5) and eccentric reducing sheet (2) by connecting pin (3) hinge for planet tooth bar (1), and the two ends of its spring act on respectively on two connecting pins (3).Form reducing gear assembly (13) by planet tooth bar (1), the eccentric reducing sheet of connecting pin (3) (2), accurate position spring (5) and sliding pin (11).Reducing gear assembly (13) is the dead axle corner with movable pivot axis (4), can realize the process of reducing.(reducing driving gear shown in Figure 1, piece together a complete full-depth tooth gear by four reducing gear assemblies (13), they are divided into two groups, be separately positioned on the right and left of garden, center plate (6), referring to Fig. 2, can form the figure of two similar " Tai Ji Tu " this moment at the right and left of garden, center plate (6).）
Movable pivot axis (4) is with reducing gear assembly (13) and garden, center plate (6) hinge, and garden, center plate (6) is riveted with main shaft (7).Because the rotatablely moving of main shaft (7) drives reducing gear assembly (13) and rotate, planet tooth bar (1) chain drive-belt (10) on the reducing gear assembly (13) is finished the process of transmission.
The utility model realizes that the process of control reducing is as described below automatically:
When chain (10) was zero load, planet tooth bar (1) was not subjected to the external force effect, the two ends Spring balanced of accurate position spring (5), and connecting pin (3) remains on the eccentric reducing sheet (2).When the load on the chain (10) changes, planet tooth bar (1) is subjected to the external force effect, directly external force is passed to reducing gear assembly (13), again by movable pivot axis (4), armed lever (12), sliding pin (11) passes on the synchronous reducing dish (9), thereby produce a torque difference between reducing dish (9) and the main shaft (7) synchronously, again because of between reducing dish (9) and the main shaft balance spring that circles round (8) being housed synchronously, be subjected to the effect of the torque difference of generation between synchronous reducing dish (9) and the main shaft (7), drive synchronous reducing dish (9) corner, forcing reducing gear assembly (13) is dead axle corner reducing with movable pivot axis (4), the feasible balance spring (8) that circles round reaches balance, realizes controlling automatically the purpose of reducing.If change the elastic force that circles round of the balance spring (8) that circles round, can realize stepless spacing automatic speed changing transmission.
The utility model decapacitation is controlled outside the reducing automatically, can also artificially grasp and control, and is artificially grasping control gear as shown in Figure 3.When rotating for main shaft (7), drive is located at main shaft (7) and goes up the fixedly forward gear (16) of pin member connection, (two idle pulleys (17) are meshing with each other to drive two idle pulleys (17), an idle pulley (17) and forward gear (16) engagement, an idle pulley (17) and reverse gear (15) engagement), after the break-in, pass to reverse gear (15), again because of the bevel gear of reverse gear (15) and differential mechanism (14) for fixedlying connected, reducing dish (9) matches with the reducing driving gear synchronously, identical with the sense of rotation of main shaft (7), rotating speed equates that reducing dish (9) is fixedlyed connected with another bevel gear of differential mechanism (14) synchronously.Thereby obtain a pair of direction of rotation, equal the rotatablely moving of rotating speed on the planetary pinion both sides of differential mechanism (14), planet wheel is rotated in fixed axis.When the needs speed change, as long as grasping cross axle (cross axle the hold concurrently operating stem) corner of differential mechanism (14), make planetary pinion do planetary motion, produce differential, drive synchronous reducing dish (9) corner, can reach the purpose of artificial control reducing.
Above-described device, be that the reducing driving gear is when realizing the stepless variable radius speed governing, the basic condition of each member interoperation, if when this device is used for chain rotation or other coiling transmission, because the reducing driving gear is when the stepless variable radius speed governing, the length of its chain also will change with it, for this reason, need to establish a tension device, as shown in Figure 6 in the slack list of chain (10).Bearing (19) is fastening to be installed on the passive sprocket shaft, bearing (19) is provided with the minor sprocket (20) of two dead axles and the movable armed lever (21) of a flexible connection, one end of movable armed lever (21) is provided with a minor sprocket (20), chain (10) penetrates in the middle of being located at two minor sprockets (20) on the bearing (19), walk around the minor sprocket (20) on the movable armed lever (21), when the length change of chain (10), movable armed lever (21) is at the effect lower swing of gravity or elastic force, with chain (10) tensioning, reach the purpose of tension chain (10).
Claims (5)
1, a kind of stepless variable radius transmission gear means, by main shaft, garden, center plate, reducing dish and tension device are formed synchronously, it is characterized in that: garden, center plate (6) is connected with armed lever (12) by movable pivot axis (4), garden, center plate (6) is provided with reducing gear assembly (13), planet tooth bar (1) on the reducing gear assembly (13) is meshed with chain (10), the slack list of chain (10) is provided with tension device, reducing gear assembly (13) is the slip edge joint with synchronous reducing dish (9) by sliding pin (11), is provided with the balance spring that circles round (8) between main shaft (7) and the synchronous reducing dish (9).
2, stepless variable radius transmission gear means according to claim 1 is characterized in that: reducing gear assembly (13) is made up of planet tooth bar (1), eccentric reducing sheet (2), connecting pin (3), accurate position spring (5) and sliding pin (11).
3, stepless variable radius transmission gear means according to claim 2 is characterized in that: planet tooth bar (1) is fixed together with eccentric reducing sheet (2).
4, stepless variable radius transmission gear means according to claim 1 and 2 is characterized in that: reducing gear assembly (13) also can be made up of planet tooth bar (1), displacement planetary pinion (22), tooth bar (23), drive plate (24) and pin (25).
5, stepless variable radius transmission gear means according to claim 1, it is characterized in that: tension device is made up of three minor sprockets (20), wherein, two minor sprockets (20) dead axle is on bearing (19), and another minor sprocket (20) dead axle is on movable armed lever (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92244938 CN2146611Y (en) | 1992-12-11 | 1992-12-11 | Stepless variable-diameter drive gearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92244938 CN2146611Y (en) | 1992-12-11 | 1992-12-11 | Stepless variable-diameter drive gearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2146611Y true CN2146611Y (en) | 1993-11-17 |
Family
ID=33784060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92244938 Expired - Fee Related CN2146611Y (en) | 1992-12-11 | 1992-12-11 | Stepless variable-diameter drive gearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2146611Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104816781A (en) * | 2015-03-24 | 2015-08-05 | 李皓明 | Super variable-speed gear |
| CN107013656A (en) * | 2017-06-07 | 2017-08-04 | 司长松 | The low pair of gear |
| CN116592103A (en) * | 2023-07-18 | 2023-08-15 | 中天通信技术有限公司 | Reversing device |
-
1992
- 1992-12-11 CN CN 92244938 patent/CN2146611Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104816781A (en) * | 2015-03-24 | 2015-08-05 | 李皓明 | Super variable-speed gear |
| CN107013656A (en) * | 2017-06-07 | 2017-08-04 | 司长松 | The low pair of gear |
| CN116592103A (en) * | 2023-07-18 | 2023-08-15 | 中天通信技术有限公司 | Reversing device |
| CN116592103B (en) * | 2023-07-18 | 2023-10-17 | 中天通信技术有限公司 | Reversing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |