WO2011065850A1

WO2011065850A1 - Planetary gear

Info

Publication number: WO2011065850A1
Application number: PCT/PL2010/000117
Authority: WO
Inventors: Wiktor Migaszewski; Fryderyk Migaszewski; Franciszek Migaszewski; Stefan Migaszewski
Original assignee: Wiktor Migaszewski; Fryderyk Migaszewski; Franciszek Migaszewski; Stefan Migaszewski
Priority date: 2009-11-27
Filing date: 2010-11-17
Publication date: 2011-06-03

Abstract

The essence of invention is a development of such planetary gear, which would enable obtaining an additional transmission ratio of drive, by using of a yoke (2) with the set of known from the resources of planetary gear engineering satellite gears (3), which are seated on the yoke carrier (1), owing to which in addition to the obtained in other planetary transmissions - transverse motion in relation to the transmission axis, an additional kind of motion the longitudinal motion with regard to axis is obtained thereby.

Description

PLANETARY GEAR

FIELD OF THE INVENTION

The invention relates to a transverse and longitudinal planetary gear. BACKGROUND OF THE INVENTION

The planetary (epicyclic) gears are known, among other things, from the patent description PL 315898, that are fitted with a ring gear and crown gear, as well as the supporting element, with rotationally seated in it a number of pinions, situated between ring gear and crown gear, as the elements, of which one element is stationary, and one of remaining elements is a rotational element, transmitting a torque between rotational element and outer body, placed in a eccentric location with regard to the rotational body.

There are known solutions, described among others in the patent descriptions: PL 160388, US 5967938, DE 19930973, DE 102004048114, in which the transmission of power is obtained by using the systems of planetary gears, in which the distribution of forces in the system is uniform, owing to which the loads transmitted can be higher.

SUMMARY OF THE INVENTION

The essence of invention is a development of such planetary gear, which would enable obtaining an additional transmission ratio of drive, by using of a yoke with the set of known from the resources of planetary gear engineering - satellite gears, which are seated on the yoke carrier, owing to which in addition to the obtained in other planetary transmissions - transverse motion in relation to the transmission axis, an additional kind of motion - the longitudinal motion with regard to axis is obtained thereby.

The transverse and longitudinal planetary gear, incorporating the driving bodies: one driver and one follower, a central axle with fixed on it sun gears, and a yoke with located on it planetary gears is characterized in that, it is fitted with yoke carrier with fixed on it yoke, along with the set of satellite gears, rotationally fixed on the yoke carrier raceways.

It is preferable, that on the yoke, there are bilaterally situated gears with an external teeth: driving yoke gear, and driven yoke gear, which enable the alternate or simultaneous intermeshing with the driver and follower.

It is preferable, that the set of satellite gears is in a form of the sets of large satellite gears and small satellite gears.

It is preferable, that the diameter of driving yoke gear, as well as that of driven yoke gear, are equal to the outside diameter of the set of large satellite gears.

It is preferable, that the driver is fitted with a gear with internal teeth of the diameter equal to the external diameter of the set of large satellite gears and the diameter of driving yoke gear, intermeshing alternately with the set of large satellite gears, and with driving yoke gear.

It is preferable, that the driver is additionally fitted with the driver arm, connecting it with the support axle.

It is preferable, that the driver is additionally fitted with the driver arm, connecting it with the sprocket wheel. It is preferable, that the follower is fitted with the gear with internal teeth of the diameter equal to the external diameter of the set of large satellite gears and the diameter of driven yoke gear, intermeshing alternately with the set of large satellite gears, as well as with driven yoke gear.

It is preferable, that the follower is connected with the sprocket wheel, transmitting the drive onto the wheel by means of chain.

It is preferable, that the follower is connected with driven wheel by means of spokes.

It is preferable, that the central axle is fitted with suitably sized sun gears, arranged at the appropriate spacing.

It is preferable, that the central axle is fixed to the frame unilaterally, on the side of follower.

It is preferable, that the transmission is fitted with the control rod ending with a catch, and mounted with its central part sliding in the transmission housing in parallel to the central axle.

It is preferable, that the yoke carrier, fastened on the central axle in a way enabling its rotary motion, has yoke carrier raceways in a form of rods, fixed rigidly to the walls of yoke carrier, and enabling longitudinal motion of yoke, and rotary motion of fixed on them satellite gears.

It is preferable, that the yoke carrier raceways are situated in parallel with the central axle, and at the equal distance from that axle.

It is preferable, that the support axle is situated longitudinally, centrally and rotationally in the central axle, with fixed on it a driver arm and pedal cranks.

It is preferable, that the transmission is located in the support of bicycle, which is fixed in the frame. BRIEF DESCRIPTION OF THE DRAWING FIGURES

The invention was explained in detail on embodiments, as shown in the drawing, in which:

fig. 1 illustrates the first embodiment of the attachment as per invention - the longitudinal section of the three-speed hub transmission, in an neutral position of gear (without transmission of power), fig. 2 illustrates the second embodiment of the attachment as per invention - the longitudinal section of the three-speed support transmission, in an neutral position of gear (without transmission of power), fig. 3 illustrates the third embodiment of the attachment as per invention - the longitudinal section of the five-speed hub transmission, in an neutral position of gear (without transmission of power), fig. 4 illustrates the fourth embodiment of the attachment as per invention - the longitudinal section of the five-speed support transmission, in an neutral position of gear (without transmission of power), fig. 5 shows the transmission in a position of stepping-up gear, in the first embodiment,

fig. 6 shows the transmission in a position of stepping-up gear, in the second embodiment,

fig. 7 shows the transmission in a position of stepping-up gear with a higher power transmission ratio, in the third embodiment,

fig. 8 shows the transmission in a position of stepping-up gear with a lower power transmission ratio, in the third embodiment,

fig. 9 shows the transmission in a position of stepping-up gear with a higher power transmission ratio, in the fourth embodiment,

fig. 10 shows the transmission in a position of stepping-up gear with a lower power transmission ratio, in the fourth embodiment,

fig. 11 shows the transmission in a reduction gear position, in the first embodiment,

fig. 12 shows the transmission in a reduction gear position, in the second embodiment, fig. 13 shows the transmission in a reduction gear position with a lower transmission ratio, in the third embodiment,

fig. 14 shows the transmission in a reduction gear position with a higher transmission ratio, in the third embodiment,

fig. 15 shows the transmission in a reduction gear position with a lower transmission ratio, in the fourth embodiment,

fig. 16 shows the transmission in a reduction gear position with a higher transmission ratio, in the fourth embodiment,

fig. 17 shows the transverse section of a transmission in the third embodiment,

fig. 18 shows the transverse section of a transmission in the fourth embodiment, fig. 19 shows the yoke carrier diagram,

fig. 20 shows the axonometric projection of the yoke and the set of satellite gears, in the third and fourth embodiments.

In the first and second embodiments of transmission according to the invention, as shown in fig. 1 and fig. 2 the transmission features three speeds and is fitted with a yoke carrier 1 with mounted on it the sliding yoke 2 complete with the set of satellite gears 3, rotationally fixed on the raceway of yoke carrier la, which enables the transverse motion, as well as longitudinal motion of the yoke 2, as well as that of satellite gears 3 with respect to the yoke carrier raceways la.

On the yoke housing 2 there are bilaterally situated toothed wheels with an external teeth: driving yoke gear 2a and driven yoke gear 2b, with the diameter equal to the external diameter of the set of satellite gears 3 and at the same time equal to the diameter of gears with internal diameter 4a and 5a, fixed on driver 4 and follower 5. Both, the driving yoke gear 2a, as well, as driven yoke gear 2b, enable an alternate or simultaneous meshing with the driver 4 and follower 5.

The yoke carrier 1 consists of the yoke carrier raceways la in a form of rods, enabling longitudinal motion of yoke carrier, and rotary motion of fixed on them satellite gears 3, fixed rigidly to the walls of yoke carrier lb, mounted on the central axle 8 in a way enabling the rotational motion, however, the racewaysla are situated in parallel with the central axle 8 and at the equal distance from that axle.

In the first embodiment, as presented in fig. 1, the driver 4 is connected with the driving element in a form of sprocket wheel 6, and is fitted with a gear with internal teeth 4a. The follower 5 is connected with driven mechanism 7.

In the second embodiment, as presented in fig. 2, the driver 4 is connected with driving element in a form of pedal cranks 6 mounted on support axle 11, rigidly connected with the arm of driver 4b and fitted with a gear with internal teeth 4a. The follower 5 is connected with driven mechanism 7.

In both embodiments, the first and the second one, the central axle 8, in the appropriate places, is fitted with sun gears 9 in a form of gears 9a and 9b.

In the third and fourth embodiments of transmission, as per invention, that are shown in fig. 3 and fig. 4, the transmission features 5 speeds, whilst the set of satellite gears 3 exists in a form of the sets of small satellite gears 3a and 3c, and also the large satellite gears 3b, and the set of sun gears exists in a form of gears 9a, 9b, 9c and 9d.

On the yoke housing 2, there are bilaterally situated gears with the external teeth: driving yoke gear 2a, and driven yoke gear 2b, with the diameter equal to the external diameter of the set of large satellite gears 3b. In the third embodiment, as shown in fig. 3, the driver 4 is connected with the driving element in a form of sprocket wheel 6, and is fitted with the gear with internal teeth 4a intermeshing alternately with the set of large satellite gears 3b and with driving yoke gear 2a. The follower 5 is connected with the driven mechanism 7 and is fitted with the gear with internal teeth 5a intermeshing alternately with the large satellite gears 3b and with the driven yoke gear 2b.

In the fourth embodiment, as shown in fig. 4, the driver 4 is connected with the driving element in a form of pedal cranks 6 fixed on the support axle 11, rigidly connected with the arm of driver 4b and is fitted with the gear with internal teeth 4a intermeshing alternately with the large satellite gears 3b and with the driving yoke gear 2a. The follower 5 is connected with the driven mechanism 7, and is fitted with the gear with internal teeth 5a intermeshing alternately with the large satellite gears 3b and with the driven yoke gear 2b.

In all four embodiments, the gears are shifted by means of the external control system, ending with the control rod 10, which is mounted with its central part sliding in the transmission housing in parallel to the central axle 8, in a way which enables by-passing the structure of yoke carrier 1.

Internal part of the control rod 10 is ending with the catch 10a, and is mounted as sliding along the perimeter in yoke housing 2, on the side of driven yoke gear 2b, whilst the external part of control rod 10 is connected with further control elements.

The slidable yoke 2 enables shifting the position of satellite gears 3, in a way which entails the stepping-up or reduction of transmission ratio, or else the lack of power transmission.

Operation of the transverse-and-longitudinal planetary gear in the case of stepping-up gear, in the first and second embodiment, which is shown in fig. 5 and fig. 6 respectively, is accomplished by applying power on the driver 4, which is intermeshing with the yoke 2, shifted by pulling of control rod 10 along the yoke carrier 1 to the left by one position with regard to the neutral position of gear. Then, the power is transmitted through the yoke carrier raceways la onto the set of satellite gears 3, which are intermeshing with the sun gear 9a mounted on the axle 8 and intermeshing with the gear with internal teeth 5a, and transmitting the power onto the follower 5, connected with driven mechanism 7.

Operation of the planetary gear in the case of stepping-up gear, in the third and fourth embodiment, which is shown respectively in fig. 7 and fig. 8, as well as in fig. 9 and fig. 10, is accomplished in two stages: as a lower stepping-up gear and higher stepping-up gear.

Operation of the transverse-and-longitudinal planetary gear in the case of stepping-up gear with the higher power transmission ratio, in the third and fourth embodiment, which is shown in fig. 7 i fig. 9 accordingly, is accomplished by applying power onto driver 4, which the driver 4 is intermeshing with the yoke 2, shifted by pulling the control rod 10 along the yoke carrier 1 all the way to the left. Then, the power is transmitted through the yoke carrier raceways la onto the set of satellite gears 3, where small satellite gears 3a are intermeshing with the large sun gear 9a fixed on the axle 8, and the large satellite gears 3b, intermeshing with the gear with internal teeth 5a, are transmitting the power onto the follower 5 connected with the driven mechanism 7.

Operation of the transverse-and-longitudinal planetary gear in the case of stepping-up gear with the lower power transmission ratio, in the third and fourth embodiment, which is shown in fig. 8 and fig. 10 respectively, is accomplished by applying power onto driver 4, which the driver 4 is intermeshing with the yoke 2, shifted by pulling the control rod 10 along the yoke carrier 1 to the left, by one position with regard to the neutral position of gear. Then, the power is transmitted through the yoke carrier raceways la onto the set of satellite gears 3, where large satellite gears 3b are intermeshing with the small sun gear 9b fixed on the axle 8, and intermeshing with the gear with internal teeth 5a are transmitting the power onto the follower 5 connected with the driven mechanism 7. In the third embodiment, as shown in fig. 7 and fig. 8, applying power onto driver 4 takes place by means of sprocket wheel 6, however in the fourth embodiment, as shown in fig. 9 and fig. 10, applying force onto the driver 4 is accomplished by means of a pedal crank 6, fixed on support axle 11, rigidly connected with the arm of driver 4b.

In all four embodiments, operation of the transverse-and-longitudinal gear, in the case of yoke 2 position shifted by control rod 10 along the yoke carrier 1 to such a position, in which the driving yoke gear 2a and driven yoke gear 2b are intermeshed with the gears with internal teeth of the driver 4 and that of follower 5, which is shown in fig. 1, fig. 2, fig. 3 and fig. 4, is accomplished by the transmission of driving power by means of yoke 2 from the driver 4 onto the follower 5, which results in the lack of stepping-up and reduction of gear, i.e. so called neutral position of gear. The satellite gears 3 are not intermeshing with the sun gears 9, thus not participating in the transmission of driving power, similarly as is the case of yoke carrier 1.

Operation of transmission in the case of reduction gear, in the first and second embodiment, which is shown in fig. 11 and fig. 12, is accomplished by applying power onto driver 4, which is intermeshing with the set of satellite gears 3, which in turn is intermeshing with the sun gear 9b mounted on the axle 8. Then the power is transmitted by means of yoke carrier raceways la onto the yoke 2, shifted by pulling of control rod 10 along the yoke carrier 1 by one position to the right from neutral position of gear, and then onto the follower 5 connected with driven mechanism 7.

Operation of transmission in the case of reduction gear, in the third and fourth embodiments, which is shown respectively in fig. 13 and fig. 14 as well as in fig. 15 and fig. 16, is accomplished in two stages: as a lower reduction gear and higher reduction gear.

Operation of the transverse-and-longitudinal planetary gear in the case of a lower reduction gear, in the third and fourth embodiments, which is shown in fig. 13 and fig. 15 respectively, is accomplished by applying power onto the driver 4, which the driver through the gear with internal teeth 4a is intermeshing with the set of satellite gears 3, where the large satellite gears 3b are intermeshing with the small sun gear 9c mounted on the axle 8. Then, the power is transmitted by means of yoke carrier raceways la onto the yoke 2, shifted by pulling the control rod 10 along the yoke carrier 1 by one position to the right from the neutral position of gear, onto the follower 5 connected with driven mechanism 7.

Operation of the transverse-and-longitudinal planetary gear in the case of a higher reduction gear, in the third and fourth embodiments, which is shown in fig. 14 and fig. 16 respectively, is accomplished by applying power onto the driver 4, which the driver through the gear with internal teeth 4a, by means of satellite gears 3b, is intermeshing with the set of satellite gears 3, and the small satellite gears 3c are intermeshing with the large sun gear 9d mounted on the axle 8. Then, the power is transmitted by means of yoke carrier raceways la onto the yoke 2, shifted by pulling the control rod 10 along the yoke carrier 1, by two positions to the right from the neutral position of gear, and onto the follower 5 connected with the driven mechanism 7.

In the third embodiment, as shown in fig. 13 and fig. 14, applying power onto the driver 4 takes place by means of sprocket wheel 6, however in the fourth embodiment, as shown in fig. 15 and fig. 16, applying power onto the driver 4 is accomplished by means of pedal cranks 6, fixed on the support axle 11, rigidly connected with the arm of driver 4b.

Use of a yoke carrier together with the geometry of sun gears arrangement, working clearances between sun gears, yoke gears and internal teeth of drivers and followers enables the gearshifts change from the reduction through the neutral one to the stepped-up, without any additional instrumentation, which is remarkably simplifying the lines of power transmission. The effect of invention can be the use of transmission box in various kinds of mechanisms, requiring a power transmission, as well as a change of the transmission into both: higher as well as lower ratios. The invention is paving a way to finding other methods of power transmission with the use of slidable yoke carrier. The favorable effect of invention can be the use of mechanism for the automatic transmissions quality improvement in the engine drive vehicles and mechanisms. The favorable effect of invention can be also sport bicycles weight reduction, by the application of such mechanism in the bicycle hub or support. The transverse and longitudinal planetary gear in the support version allows for more favorable placing of the driving unit, which is sensitive to soiling with mud.

The invention can be used in the automotive gearboxes, to make them more reliable on account of their simpler structure and smaller space needed for the realization of drive. The invention can be also used in the automotive automatic transmissions, owing to the possibility of changing the gearshift position by means of control rod situated inside of yoke, and externally connected with the linkage mechanism.

Claims

1. The transverse and longitudinal planetary gear, incorporating the driving bodies: one driver and one follower, a central axle with fixed on it sun gears, and a yoke with located on it planetary gears is characterized in that, it is fitted with yoke carrier (1) with fixed on it yoke (2), along with the set of satellite gears (3), rotationally fixed on the yoke carrier raceways (la).

2. The transverse and longitudinal planetary gear according to claim 1, wherein on the yoke (2), there are bilaterally situated gears with an external teeth: driving yoke gear (2a), and driven yoke gear (2b), which enable the alternate or simultaneous intermeshing with the driver (4) and follower (5).

3. The transverse and longitudinal planetary gear according to claim 1, wherein the set of satellite gears (3) is in a form of the sets of large satellite gears (3b) and small satellite gears (3a) and (3c).

4. The transverse and longitudinal planetary gear according to claim 1 or 3, wherein the diameter of driving yoke gear (2a), as well as that of driven yoke gear (2b) are equal to the outside diameter of the set of large satellite gears (3b).

5. The transverse and longitudinal planetary gear according to claim 1 or 2, wherein the driver is fitted with a gear with internal teeth (4a) of the diameter equal to the external diameter of the set of large satellite gears (3b) and the diameter of driving yoke gear (2a), intermeshing alternately with the set of large satellite gears (3b) and with driving yoke gear (2a).

6. The transverse and longitudinal planetary gear according to claim 1 or 2, wherein the driver (4) is additionally fitted with the driver arm (4b), connecting it with the support axle (11).

7. The transverse and longitudinal planetary gear according to claim 1 or 2, wherein the driver (4) is additionally fitted with the driver arm (4b), connecting it with the sprocket wheel (6).

8. The transverse and longitudinal planetary gear according to claim 1 or 2, wherein the follower (5) is fitted with the gear with internal teeth (5a) of the diameter equal to the external diameter of the set of large satellite gears (3b) and the diameter of driven yoke gear (2b), intermeshing alternately with the set of large satellite gears (3b), as well as with driven yoke gear (2b).

9. The transverse and longitudinal planetary gear according to claim 1 or 2, wherein the follower (5) is connected with sprocket wheel (7), transmitting the drive onto the wheel by means of chain.

10. The transverse and longitudinal planetary gear according to claim 1 or 2, wherein the follower (5) is connected with driven wheel by means of spokes (7).

11. The transverse and longitudinal planetary gear according to claim 1, wherein the central axle (8) is fitted with suitably sized sun gears (9a), (9b), (9c) and (9d), arranged at the appropriate spacing.

12. The transverse and longitudinal planetary gear according to claim 1 or 2, wherein the central axle (8) is fixed to the frame (12) unilaterally, on the side of follower (5).

13. The transverse and longitudinal planetary gear according to claim 1, wherein the transmission is fitted with the control rod (10) ending with a catch (10a), and mounted with its central part sliding in the transmission housing in parallel to the central axle (8).

14. The transverse and longitudinal planetary gear according to claim 1, wherein the yoke carrier (1), fastened on the central axle (8) in a way enabling its rotary motion, has yoke carrier raceways (la) in a form of rods, fixed rigidly to the walls of yoke carrier (lb), and enabling longitudinal motion of yoke (2), and rotary motion of fixed on them satellite gears (3).

15. The transverse and longitudinal planetary gear according to claim 1, wherein the yoke carrier raceways (la) are situated in parallel with the central axle (8), and at the equal distance from that axle.

16. T e transverse and longitudinal planetary gear according to claim 1, wherein the support axle (11) is situated longitudinally, centrally and rotationally in the central axle (8), with fixed on it a driver arm and pedal cranks (6).

17. T e transverse and longitudinal planetary gear according to claim 1, wherein the transmission is located in the support of bicycle, which is fixed in the frame (12).