Bidirectional mechanical converting unit

Patent metadata

Field	Value
Publication number	US-RE49574-E
Application number	US-201115782432-A
Country	US
Kind code	E1
Filing date	Sep 1, 2011
Priority date	Jul 7, 2011
Publication date	Jul 11, 2023
Grant date	Jul 11, 2023

Abstract

The present invention discloses a A bidirectional mechanical converting unit, comprising includes: a main shaft; a driving mechanism, which including a driving means assembly and a reversing means assembly which are coupled to each other; and a rotation means assembly for inputting torque, an rotation axis of the rotation means assembly being coaxial with the main shaft, the rotation means assembly and the driving mechanism being coupled to each other, and the driving mechanism delivering the torque to output at the main shaft at a predetermined direction, no matter in which direction the rotation means assembly rotates; wherein the predetermined direction can be switched via the reversing means assembly. The present invention is simple structured, not only can efficiently utilizes the movements of the rotation means in either way, but also can switch the rotation direction of the output shaft conveniently upon demand, with easy operations.

First claim

The invention claimed is:

1. A bidirectional mechanical converting unit comprising:
a main shaft; a driving mechanism, which includes a driving assembly and a reversing assembly which are coupled to each other; and a rotation assembly for inputting torque, an rotation axis of the rotation assembly being coaxial with the main shaft, the rotation assembly and the driving mechanism being coupled to each other, and the driving mechanism delivering the torque to output at the main shaft in a predetermined direction; the predetermined direction can be switched via the reversing assembly; wherein the driving assembly is sleeved on the reversing means; the driving assembly includes two driving elements mounted on the main shaft, each having a one-way clutch interposed between it and the main shaft, and a transmission structure coupling the two driving elements and forcing them to rotate in opposite directions; wherein the two driving elements are spaced apart axially; the reversing assembly includes the one-way clutches; both of the one-way clutches are functionally oriented in a same direction, so that the main shaft is entrained with one of the two driving elements which is rotating in the direction, and the main shaft is overrun by the other driving element which is rotating in the opposite direction.

2. A bidirectional mechanical converting unit according to claim 1 , wherein
the two driving elements are a capstan gear and a follower gear respectively; the transmission structure includes at least one idle gear axle perpendicular to the main shaft, at least one idle gear is disposed on the idle gear axle and engaged with the capstan gear and the follower gear together, so that the capstan gear and the follower gear rotate in opposite directions; and the capstan gear is fixedly coupled with the rotation assembly.

3. A bidirectional mechanical converting unit according to claim 2 , wherein the capstan gear, the follower gear and the idle gear are bevel gears.

4. A bidirectional mechanical converting unit according to claim 3 , wherein the transmission structure includes two idle gear axles perpendicular to the main shaft; two idle gears are disposed on the idle gear axles and engaged with the capstan gear and the follower gear together, so that the capstan gear and the follower gear rotate in opposite directions.

5. A bidirectional mechanical converting unit according to claim 3 , wherein the main shaft has at least one profiled surface, through which the reversing assembly engages with the main shaft.

6. A bidirectional mechanical converting unit according to claim 5 , wherein the main shaft has a plurality of profiled surfaces.

7. A bidirectional mechanical converting unit according to claim 6 , wherein the main shaft has three profiled surfaces.

8. A bidirectional mechanical convening unit according to claim 5 , wherein the at least one profiled surface of the main shaft is configured into two segments, which are corresponding to the two driving elements, respectively.

9. A bidirectional mechanical converting unit according to claim 5 , wherein
the reversing assembly sleeved on the main shaft includes a reversing element and two sets of rolling elements; wherein the reversing element is sleeved on the main shaft coaxially in clearance fitting, two sets of slots whose dimensions are slightly larger than those of the rolling elements are disposed on the reversing element for receiving the two sets of rolling elements respectively, positions of which are corresponding to positions of the two driving elements; each one of the two driving elements has an inner circumference, through which the driving elements are sleeved on the reserving element coaxially in clearance fitting, respectively; each set of the rolling elements includes at least one rolling element, which can roll on the profiled surface; the rolling element can be pushed with the two sets of slots of the reversing element to engage with the profiled surface and the inner circumference together; wherein the one-way clutch is formed through the rolling elements engaging with the profiled surface and the inner circumference together.

10. A bidirectional mechanical converting unit according to claim 9 , wherein the inner circumferences are cylinder surfaces, the rolling elements are cylinder rolling needles, and the axes of the rolling needles are parallel to the axis of the main shaft.

11. A bidirectional mechanical converting unit according to claim 9 , wherein the inner circumferences are frusto-conical surfaces, the rolling elements are conical rolling shafts, and the profiles of the rolling shafts are matched with gaps between the profiled surface and the inner circumferences.

12. A bidirectional mechanical converting unit according to claim 9 , wherein the inner circumferences are cylinder surfaces or annular surfaces, and the rolling elements are rolling balls.

13. A bidirectional mechanical converting unit according to claim 9 , wherein a radial gap is formed between the profiled surface and the inner circumference, wherein dimension of middle portion of the gap is larger than diameters of the rolling elements, and dimensions of both end portions of the radial gap are smaller than the diameters of the rolling elements.

14. A bidirectional mechanical converting unit according to claim 13 , wherein the profiled surface is a cylindrical surface, an elliptic cylindrical surface, a paraboloid or a plane.

15. A bidirectional mechanical converting unit according to claim 9 , wherein number of the rolling elements within one set of the two sets of the slots of the reversing element equals to number of the profiled surface.

16. A bidirectional mechanical converting unit according to claim 15 , wherein number of the rolling elements within each set of the two sets of the slots of the reversing element equals to number of the profiled surface.

17. A bidirectional mechanical converting unit according to claim 9 , wherein number of the rolling elements within one set of the two sets of the slots of the reversing element is larger than number of the profiled surface.

18. A bidirectional mechanical converting unit according to claim 9 , wherein number of the rolling elements within one set of the two sets of the slots of the reversing element is smaller than number of the profiled surface.

19. A bidirectional mechanical converting unit according to claim 9 , wherein the reversing element can be switched between two predetermined positions around circumference of the main shaft, to set rotation direction of the main shaft through changing position relationship between the profiled surface and the rolling elements.

20. A bidirectional mechanical converting unit according to claim 3 , wherein
two pawl seats are disposed on the main shaft in positions corresponding to the two driving elements; a pair of opposite swinging pawls is disposed on each of the pawl seats symmetrically; the two driving elements are provided at least partially annularly with a toothed inner circumference which can engage with at least one of the pawls; the reversing assembly is sleeved on the main shaft, and positioning of the pawls can be controlled, to set rotation direction of the main shaft through changing the positioning of the pawls.

21. A bidirectional mechanical converting unit according to claim 20 , wherein
the reversing assembly includes a reversing element sleeved on the main shaft coaxially in clearance fitting; the reversing element have openings

Assignees

• Wang Weiyi
• Hangzhou Great Star Ind Co Ltd
• Ratchet Solutions Inc

Inventors

• Wang Weiyi

Classifications

• B25B15/04 Primary

  with ratchet action · CPC title

• B25B13/462

  the ratchet parts engaging in a direction radial to the tool operating axis · CPC title

• B25B13/465

  a pawl engaging an internally toothed ring · CPC title

• B25B17/00

  Hand-driven gear-operated wrenches or screwdrivers (ratchet-operated B25B13/46 {B25B13/467}, B25B15/04; {for mounting or dismounting wheels B60B29/005}) · CPC title

• F16D41/088

  the intermediate members being of only one size and wedging by a movement not having an axial component, between inner and outer races, one of which is cylindrical · CPC title