TWI440785B - Mechanical stepless speed change device - Google Patents

Description

Mechanical stepless speed change device

The invention relates to a mechanical stepless speed change device, in particular to a stepless speed change device with N sets of linkage mechanisms, which has the advantages and functions of a gearless stepless shifting and an adjustable shifting effect.

Conventional stepless transmissions mostly use belts or gears, but there are different advantages and disadvantages:

[1] Use a belt drive. Although the belt drive has the advantages of low price, light weight, low noise, etc., the belt is driven by friction force. To increase the friction force, the belt must be tightened, which will inevitably cause the load of the bearing, and the belt will age after being used for a long time. The bearing life is reduced and the slippage is easy to make the transmission efficiency worse.

[2] Use gear transmission. Although the gear transmission has the advantages of high efficiency, long service life, accurate transmission ratio, etc., the general gear transmission cannot achieve the function of stepless speed change.

Therefore, it is necessary to develop new products to solve the above shortcomings and problems.

The object of the present invention is to provide a mechanical stepless speed change device, which has the advantages and functions of a gearless stepless shifting and an adjustable shifting effect, and is used to solve the problem that the conventional technology cannot simultaneously have high efficiency, long service life, and transmission. More accurate and stepless shifting problems.

The technical means for solving the above problems is to provide a mechanical stepless transmission, comprising: a frame having a frame pivoting portion; a disk frame having a disk and a shaft portion a fixing member and an auxiliary sun gear portion; the disc has N disc guiding grooves, N is a positive integer and N≧3; the shaft portion is fixed on the frame; the fixing member is used for The shaft portion is fixed to the frame; an input shaft has an input end; the input shaft is pivotally disposed on the shaft portion and the frame pivot portion; an input disc, The system has an eccentric connecting portion, the center of the disc is connected to the connecting end of the input shaft, and an output portion having an output sun gear portion and an output shaft, the output shaft is fixed to the output sun gear portion; The group linkage mechanism has a connecting rod, a control rod, an output rod and a one-way driving portion; one end of the connecting rod is pivotally connected to the eccentric connecting portion of the input disc, and the other end is coupled to the lever One of the ends is pivotally connected to each other, and the other end of the lever is pivotally connected to a disk guiding groove; one end of the output rod is pivotally connected to the control rod, and the other end is connected to the one-way driving portion; and the one-way driving portion is used for interlocking the output portion to rotate; The driving portion has a linkage rod, a pair of one-way linkage elements and a pair of planetary gear portions; the pair of one-way linkage elements are disposed at two ends of the linkage rod, and restricting the pair of planetary gear portions to only one direction Rotating; and the pair of planetary gear portions can respectively rotate the auxiliary sun gear portion and the output sun gear portion to rotate, thereby causing the output shaft to rotate; thereby driving the input shaft to rotate, the input disk is rotated The N sets of interlocking mechanisms are sequentially operated to interlock the output portion to rotate.

The above objects and advantages of the present invention will be readily understood from the following detailed description of the preferred embodiments illustrated herein.

The invention will be described in detail in the following examples in conjunction with the drawings:

Please refer to the first to fourth figures, which are a first embodiment of the mechanical stepless transmission of the present invention, comprising: a frame 10, a disc holder 20, an input shaft 30, and an input disc 40. An output unit 50 and three sets of interlocking mechanisms 60.

Regarding the frame 10, it has a frame pivoting portion 11.

The disc frame 20 has a disc 21, a shaft portion 22, a fixing member 23 and an auxiliary sun gear portion 24; the disc 21 has three disc guiding grooves 211; the shaft portion 22 is fixed to The frame 10 is configured to fix the shaft portion 22 to the frame 10.

The input shaft 30 has an input end 31. The input shaft 30 is pivotally disposed on the shaft portion 22 and the frame pivot portion 11.

The input disc 40 has an eccentric connection 41 to which the center of the input disc 40 is coupled.

The output unit 50 has an output sun gear portion 51 and an output shaft 52, and the output shaft 52 is fixed to the output sun gear portion 51.

Each of the linkage mechanisms 60 has a connecting rod 61, a control rod 62, an output rod 63 and a one-way driving portion 64; one end of the connecting rod 61 is pivotally connected to the eccentric connecting portion 41 of the input disc 40. The other end is pivotally connected to one end of the control rod 62. The other end of the control rod 62 is pivotally connected to the disc guiding slot 211. One end of the output rod 63 is pivotally connected to the lever. 62, the other end is connected to the one-way driving portion 64; and the one-way driving portion 64 is used for interlocking the output portion 50 to rotate; further, the one-way driving portion 64 has a linkage rod 641, a pair of one-way The interlocking member 642 and the pair of planetary gear portions 643; the pair of unidirectional interlocking members 642 are disposed at both ends of the linkage rod 641, and restrict the pair of planetary gear portions 643 to only perform one-way rotation; and the pair of planetary gear portions 643 can respectively rotate the auxiliary sun gear portion 24 and the output sun gear portion 51 to rotate the output shaft 52.

Thereby, after the input shaft 30 is driven to rotate, the input disc 40 is driven to rotate, and the N sets of interlocking mechanisms 60 are sequentially operated to interlock the output portion 50 to rotate.

For example, as shown in the fourth, fifth, and fifth B, the present invention has a first linkage mechanism 60A, a second linkage mechanism 60B, and a third linkage mechanism 60C, and the one-way linkage component The 642 system restricts the pair of planetary gear portions 643 from rotating only in the first rotational direction A1; when the input shaft 30 is driven to perform a rotation in the second direction A2, the input disk 40 is caused by a first position P1. When being driven to a second position P2, the input disc 40 drives the connecting rod 61, and the connecting rod 61 drives the lever 62 and interlocks the output rod 63, thereby making the planet of the third linkage mechanism 60C The gear portion 643 is pushed (ie, indicated by a solid arrow) to move along the output sun gear portion 51 while generating a rotation in the first rotational direction A1 (ie, idling, unable to drive the output sun The gear portion 51 is rotated, and the planetary gear portion 643 of the first linkage mechanism 60A and the second linkage mechanism 60B is pulled (ie, indicated by a hollow arrow) to move along the output sun gear portion 51, and the rotation direction is restricted ( The rotation of the second rotational direction A2 cannot be performed, so that the output sun gear portion 51 and the output shaft 52 are rotated in the second rotational direction A2.

As shown in the fourth and fifth C diagrams, when the input disc 40 is driven to the third position P3 by the second position P2, the planetary gear portion 643 of the first linkage mechanism 60A is pushed along the output. The sun gear portion 51 moves while the rotation of the first rotation direction A1 is generated, and the planetary gear portion 643 of the second linkage mechanism 60B and the third linkage mechanism 60C is pulled to move along the output sun gear portion 51, and rotates. Since the direction is restricted, the output sun gear portion 51 and the output shaft 52 are rotated in the second rotation direction A2.

As shown in the fourth and fifth D diagrams, when the input disk 40 is driven to the fourth position P4 by the third position P3, the planetary gear portion 643 of the third linkage mechanism 60C is pulled along the output. The sun gear portion 51 moves, and the rotation direction is restricted, so that the output sun gear portion 51 and the output shaft 52 are rotated in the second rotation direction A2; and the first linkage mechanism 60A and the second linkage mechanism 60B The planetary gear portion 643 is pushed to move along the output sun gear portion 51 while performing idle rotation in the first rotational direction A1.

Since the disc frame 20 is fixed to the frame 10 by the fixing member 23, the fixing member 23 is detached or loosened (if it is locked and fixed), the disc 21 can be reached. Rotating; by the rotation of the disc 21, the relative position of the control rod 62 and the disc guiding groove 211 can be adjusted, causing a change in the distance between the control rod 62 and the input shaft 30 (such as the sixth and sixth As shown in FIG. B, after the disk 21 is rotated by a predetermined angle θ, the distance between the pivot point of the control rod 62 and the disk 21 to the input shaft 30 is shortened by a first distance S1 to a second distance S2) And changing the interlocking mechanism 60 to drive the shifting effect of the output portion 50 (the distance change can be adjusted according to the required speed).

As can be seen from the above description, the present invention utilizes at least three sets of interlocking mechanisms 60 for interlocking, and when the input disc 40 is rotated to different positions, at least one of them is driven. The group linkage mechanism 60 interlocks the output portion 50 (that is, the planetary gear portion 643 of at least one of the linkage mechanisms 60 does not idling), thereby achieving the function of continuous uninterrupted and stepless shifting of the output power; When the input disc 40 is rotated to different angles, the output rods 63 of the three sets of linkage mechanisms 60 output angular velocity changes (a first curve L1, a second curve L2, and a third curve L3, respectively). As can be seen, the three sets of output rods 63 are sequentially outputted according to the change of the rotation angle of the input disc 40, so that the output power reaches a continuous uninterrupted function.

In summary, the advantages and effects of the present invention can be summarized as follows:

[1] Stepless shifting of gear transmission. Generally, if the stepless transmission is driven by a belt, the bearing life is reduced and the slippage is easy to make the transmission efficiency worse. However, the general gear transmission can improve the shortcomings of the belt transmission, but cannot achieve the function of the stepless shifting; The design of the mechanism 60 not only achieves the advantages of high efficiency, long life, accurate transmission ratio of the gear transmission, but also has the function of stepless speed change.

[2] Adjustable shifting effect. The invention changes the distance between the pivot point of the control rod 62 and the disc 21 to the input shaft 30, that is, changes the shifting effect of the linkage mechanism 60 to drive the output portion 50.

The present invention has been described in detail with reference to the preferred embodiments of the present invention, without departing from the spirit and scope of the invention.

From the above detailed description, it will be apparent to those skilled in the art that the present invention can achieve the foregoing objects, and the invention has been in accordance with the provisions of the patent law.

10‧‧‧Rack

11‧‧‧Rack pivoting

20‧‧‧Disc rack

21‧‧‧ disc

211‧‧‧ disc guide groove

22‧‧‧Axis

23‧‧‧Fixed components

24‧‧‧Auxiliary Sun Gear Division

30‧‧‧ input shaft

31‧‧‧ input

40‧‧‧ input disc

41‧‧‧Eccentric connection

50‧‧‧Output Department

51‧‧‧Output sun gear

52‧‧‧ Output shaft

60‧‧‧ linkage agency

60A‧‧‧First linkage agency

60B‧‧‧Second linkage

60C‧‧‧The third linkage mechanism

61‧‧‧ Connecting rod

62‧‧‧Control lever

63‧‧‧ Output rod

64‧‧‧One-way driving department

641‧‧‧ linkage rod

642‧‧‧One-way linkage element

643‧‧‧ Planetary Gear Division

Θ‧‧‧predetermined angle

P1‧‧‧ first position

P2‧‧‧ second position

P3‧‧‧ third position

P4‧‧‧ fourth position

A1‧‧‧first direction of rotation

A2‧‧‧second direction of rotation

S1‧‧‧ first distance

S2‧‧‧Second distance

L1‧‧‧ first curve

L2‧‧‧ second curve

L3‧‧‧ third curve

The first figure is a schematic diagram of the mechanical stepless speed change device of the present invention.

The second figure is an internal schematic diagram of the mechanical stepless transmission of the present invention.

The third figure is an exploded view of the mechanical stepless transmission of the present invention.

The fourth figure is a partial cross-sectional view of the mechanical stepless transmission of the present invention.

Figure 5A is a schematic diagram of the action of the linkage mechanism of the present invention

Figure 5B is a schematic diagram of the action 2 of the linkage mechanism of the present invention

The fifth C diagram is a schematic diagram of the action 3 of the linkage mechanism of the present invention

The fifth D diagram is a schematic diagram of the action 4 of the linkage mechanism of the present invention

Figure 6A is a schematic diagram of the adjustment action of the control lever of the present invention

Figure 6B is a schematic diagram of the adjustment action 2 of the control rod of the present invention

The seventh figure is the input angle of the present invention and the angular velocity of the three sets of output rods.

10‧‧‧Rack

20‧‧‧Disc rack

21‧‧‧ disc

211‧‧‧ disc guide groove

22‧‧‧Axis

23‧‧‧Fixed components

24‧‧‧Auxiliary Sun Gear Division

30‧‧‧ input shaft

31‧‧‧ input

40‧‧‧ input disc

41‧‧‧Eccentric connection

50‧‧‧Output Department

51‧‧‧Output sun gear

52‧‧‧ Output shaft

60‧‧‧ linkage agency

61‧‧‧ Connecting rod

62‧‧‧Control lever

63‧‧‧ Output rod

64‧‧‧One-way driving department

641‧‧‧ linkage rod

642‧‧‧One-way linkage element

643‧‧‧ Planetary Gear Division

Claims (4)

A mechanical stepless transmission includes: a frame having a frame pivoting portion; a disk frame having a disk, a shaft portion and a fixing member, and an auxiliary sun gear portion; The disc has N disc guiding grooves, N is a positive integer and N≧3; the shaft portion is fixed on the frame; the fixing member is used for fixing the shaft portion to the frame; An input shaft having an input end; the input shaft is pivotally disposed on the shaft portion and the frame pivot portion; and an input disc having an eccentric connection portion, the disc The center is connected to the linkage end of the input shaft; an output portion has an output sun gear portion and an output shaft, the output shaft is fixed to the output sun gear portion; and the N group linkage mechanism has a connecting rod a control lever, an output rod and a one-way driving portion; one end of the connecting rod is pivotally connected to the eccentric connecting portion of the input disc, and the other end is pivotally connected to one end of the control rod, the lever The other end is pivotally connected to the disc guiding groove; one end of the output rod is pivoted The one end of the control rod is connected to the one-way driving portion; and the one-way driving portion is for interlocking the rotation of the output portion; further, the one-way driving portion has a linkage rod and a pair of one-way linkage elements And a pair of planetary gear portions; the pair of unidirectional linkage elements are disposed at two ends of the linkage rod, and restricting the pair of planetary gear portions to only perform one-way rotation; and the pair of planetary gear portions can respectively interlock the auxiliary sun gear And the output sun gear portion rotates, thereby causing the output shaft to rotate; thereby, after driving the input shaft to rotate, the input disk is driven to rotate, so that the N groups of interlocking mechanisms are sequentially activated, and then the output portion is linked Turn. The mechanical stepless speed change device according to claim 1, wherein the shifting effect is achieved by adjusting the relative position of the disk guiding groove and the control rod. The mechanical stepless speed change device according to claim 1, wherein The disc frame in turn has a securing member for securing the shaft portion to the frame. The mechanical stepless speed change device of claim 1, wherein the disc frame has an auxiliary sun gear portion pivotally connected to the shaft portion; the output portion has an output sun gear And an output shaft fixed to the output sun gear portion; and the one-way driving portion has a linkage rod, a pair of one-way linkage elements and a pair of planetary gear portions; the pair of one-way linkage elements Is disposed at both ends of the linkage rod and restricts the pair of planetary gear portions to perform only one-way rotation; and the pair of planetary gear portions respectively rotates the auxiliary sun gear portion and the output sun gear portion to rotate the output The shaft reaches the rotation.