TWI434000B - Connecting rod type stepless speed change device - Google Patents

Description

Link type stepless speed change device

The invention relates to a link type stepless speed change device, in particular to a link type 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 link type stepless speed change device, which has the advantages and functions of the gearless stepless shifting and the adjustable shifting effect, and is capable of solving the conventional technology and has the advantages of high efficiency and long service life. The gear ratio is accurate and the problem of stepless speed change.

The technical means for solving the above problems of the present invention provides a link type stepless speed change device, The utility model comprises: a frame having N frame pivoting portions; N series being a positive integer and N≧3; a disk frame having a disk and a shaft portion; the disk system has N a pivoting portion of the disk; the shaft portion is fixed to the frame; an input shaft having an input end and a linking end; the input shaft is pivotally disposed on the shaft portion; an eccentric a disc having an eccentric connecting portion and a guiding groove; the eccentric connecting portion is connected to the linking end of the input shaft; an output portion; N sets of interlocking mechanisms, each linking mechanism having a lever and a rocking a lever, a sliding rod, an output rod and a one-way driving portion; one end of the control rod, the sliding rod and the output rod are pivotally connected to each other, and the other end of the control rod is pivotally connected to the disc The sliding rod is slidably disposed on the rocker, and the other end of the output rod is connected to the one-way driving portion; one end of the rocking rod is pivotally connected to the frame pivoting portion, and the other end is a slidable guide groove provided in the eccentric disk; and the unidirectional driving portion is configured to rotate the output portion; thereby driving The input shaft is rotated, the system will drive the eccentric disk rotates eccentrically, the N-group interlocking mechanism actuated sequentially, and further rotation of the interlocking of the output section.

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

10‧‧‧Rack

11‧‧‧Rack pivoting

20‧‧‧Disc rack

21‧‧‧ disc

211‧‧‧ Disc pivoting

22‧‧‧Axis

23‧‧‧Fixed components

24‧‧‧Auxiliary Sun Gear Division

30‧‧‧ input shaft

31‧‧‧ input

32‧‧‧ linkage

40‧‧‧Eccentric disc

41‧‧‧Eccentric connection

42‧‧‧ guiding slot

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‧‧‧Control lever

62‧‧‧ rocker

63‧‧‧Sliding rod

64‧‧‧ Output rod

65‧‧‧One-way driving department

651‧‧‧ linkage rod

652‧‧‧One-way linkage element

653‧‧‧ 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 link type stepless speed change device of the present invention.

The second figure is an internal schematic diagram of the link type stepless speed change device of the present invention.

The third figure is an exploded view of the link type stepless speed change device of the present invention.

The fourth figure is a partial cross-sectional view of the link type stepless speed change device 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 sliding rod of the present invention

Figure 6B is a schematic view of the adjustment action 2 of the sliding rod of the present invention

Figure 7A is a schematic view of a second embodiment of the present invention

Figure 7B is a top plan view of a second embodiment of the present invention

The eighth figure is a schematic diagram of the relationship between the input angle and the output angular velocity of the present invention.

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

Regarding the frame 10, it has three frame pivoting portions 11.

The disc holder 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 pivoting portions 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 and a linkage end 32; the input shaft 30 is The pivoting portion is disposed on the shaft portion 22.

The eccentric disk 40 has an eccentric connecting portion 41 and a guiding groove 42; the eccentric connecting portion 41 is connected to the linking end 32 of the input shaft 30.

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 control rod 61, a rocker 62, a sliding rod 63, an output rod 64 and a one-way driving portion 65; the control rod 61, the sliding rod 63 and the output rod 64 One end of the control rod 61 is pivotally connected to the disc pivoting portion 211. The sliding rod 63 is slidably disposed on the rocker 62, and the output rod 64 is another One end of the rocker 62 is pivotally connected to the frame pivoting portion 11 and the other end is slidably disposed on the guiding groove 42 of the eccentric disk 40; The driving portion 65 is configured to interlock the rotation of the output portion 50. Moreover, the one-way driving portion 65 has a linkage rod 651, a pair of one-way linkage elements 652 and a pair of planetary gear portions 653; the pair of one-way linkage elements 652 are disposed at both ends of the linkage rod 651 and are limited The pair of planetary gear portions 653 can only perform one-way rotation; and the pair of planetary gear portions 653 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 eccentric disk 40 is driven to rotate eccentrically, and the N sets of interlocking mechanisms 60 are sequentially operated to interlock the output portion 50 to rotate.

For example, as shown in FIGS. 5A and 5B, it is assumed that the present invention has a first linkage mechanism 60A, a second linkage mechanism 60B, and a third linkage mechanism 60C, and the one-way transmission element 652 is limited. The pair of planetary gear portions 653 can only perform a rotation in the first rotation direction A1; when the input shaft 30 is driven to perform a rotation in the second rotation direction A2, the eccentric disk 40 is driven by a first position P1. When the second position P2 is reached, the guiding groove 42 drives the rocker 62 to the frame pivot The connecting portion 11 is deflected to synchronously deflect the sliding rod 63 and interlock the output rod 64, so that the first interlocking mechanism 60A and the planetary gear portion 653 of the second linking mechanism 60B are pushed (ie, indicated by solid arrows). Moving along the output sun gear portion 51, and simultaneously generating the rotation of the first rotation direction A1 (that is, idling, the rotation of the output sun gear portion 51 cannot be driven), and the planetary gear portion 653 of the third linkage mechanism is pulled (ie, hollow The output sun gear portion 51 moves along the output sun gear portion 51, and the rotation direction is restricted (the second rotation direction A2 cannot be rotated), so that the output sun gear portion 51 and the output shaft 52 are driven to perform the second The rotation of the direction of rotation A2.

As shown in FIG. 5C, when the eccentric disk 40 is driven to the third position P3 by the second position P2, the second linkage mechanism 60B and the planetary gear portion 653 of the third linkage mechanism 60C are pushed. While moving along the output sun gear portion 51, the rotation of the first rotation direction A1 is simultaneously generated, and the planetary gear portion 653 of the first linkage mechanism 60A is pulled to move along the output sun gear portion 51, and the rotation direction is restricted. Therefore, the output sun gear portion 51 and the output shaft 52 are rotated in the second rotation direction A2.

As shown in FIG. 5D, when the eccentric disk 40 is driven to the fourth position P4 by the third position P3, the first linkage mechanism 60A and the planetary gear portion 653 of the second linkage mechanism 60B are pulled. And moving along the output sun gear portion 51, 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 planetary gear portion of the third linkage mechanism The 653 is pushed to move along the output sun gear portion 51 while performing the idle rotation in the first rotational direction A1.

It can be seen that the interlocking change occurs when the three sets of interlocking mechanism 60 are driven by the eccentric disk 40, so that the output portion 50 can reach the variable rotational speed output of the predetermined rotational direction; of course, the steering of the planetary gear portion 653 Limiting the design allows the output portion 50 to be rotated only in a single direction of rotation.

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 rotated; by the rotation of the disc 21, the position of the lever 61 can be changed, and the position is interlocked. The sliding rod 63 slides on the rocker 62, and changes the distance between the one end of the control rod 61, the sliding rod 63 and the output rod 64 to the frame pivoting portion 11 (such as the sixth and sixth panels). As shown, after the disc 21 is rotated by a predetermined angle θ, the distance between the lever 61, the sliding rod 63 and the output rod 64 being pivotally connected to the frame pivoting portion 11 is shortened by a first distance S1. The second distance S2) is changed, and the shifting effect of the output unit 50 is changed by the linkage mechanism 60 (the distance change can be adjusted according to the required speed).

As shown in the seventh embodiment of the present invention, the control rod 61, the sliding rod 63 and the output rod 64 are pivotally connected to one another, and are pivoted to the frame. When the input shaft 30 rotates to cause the eccentric disk 40 to yaw the rocker 62 (the rocker 62 and the sliding rod 63 are pivoted with the frame pivoting portion 11 as an axis) The output rod 64 is not pushed or pulled, and can only be idling (that is, the output portion 50 is not driven by the linkage mechanism 60 to form a neutral state).

As can be seen from the above description, the present invention utilizes at least three sets of interlocking mechanisms 60 for interlocking. When the eccentric disc 40 is rotated to different positions, at least one set of linkage mechanisms 60 is linked to the output unit 50 (that is, at least one set of linkages) The planetary gear portion 653 of the mechanism 60 does not idling, thereby enabling the output power to achieve a continuous uninterrupted function, and can achieve the function of stepless shifting; as shown in the eighth figure, the eccentric disc 40 is rotated to different At an angle, the output rods 64 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), and it can be seen from the change that the three sets of output rods 64 are associated with the The rotation angle of the eccentric disk 40 is sequentially outputted, 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, the stepless transmission will cause the shaft if it 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 the function of the stepless speed change cannot be achieved. However, the design of the linkage mechanism 60 can not only achieve the gear transmission. The utility model has the advantages of high efficiency, long service life, accurate transmission ratio, and the like, and has the function of stepless speed change.

[2] Adjustable shifting effect. The invention changes the distance between the pivoting point of the sliding rod 63 and the control rod 61 to the frame pivoting portion 11, that is, changes the shifting effect of the linking 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 pivoting

22‧‧‧Axis

23‧‧‧Fixed components

24‧‧‧Auxiliary Sun Gear Division

30‧‧‧ input shaft

31‧‧‧ input

32‧‧‧ linkage

40‧‧‧Eccentric disc

41‧‧‧Eccentric connection

42‧‧‧ guiding slot

50‧‧‧Output Department

51‧‧‧Output sun gear

52‧‧‧ Output shaft

60‧‧‧ linkage agency

61‧‧‧Control lever

62‧‧‧ rocker

63‧‧‧Sliding rod

64‧‧‧ Output rod

65‧‧‧One-way driving department

651‧‧‧ linkage rod

652‧‧‧One-way linkage element

653‧‧‧ Planetary Gear Division

Claims (4)

A link type stepless transmission device includes: a frame having N frame pivoting portions; N series being a positive integer and N≧3; a disk frame having a disk and a shaft portion having N disk pivoting portions; the shaft portion is fixed to the frame; an input shaft having an input end and a linking end; the input shaft is pivotable The eccentric disk has an eccentric connecting portion and a guiding groove; the eccentric connecting portion is connected to the connecting end of the input shaft, an output portion; N sets of interlocking mechanisms, each The linkage mechanism has a control rod, a rocker, a sliding rod, an output rod and a one-way driving portion; one end of the control rod, the sliding rod and the output rod are pivotally connected to each other, and the control rod is another One end is pivotally connected to the disc pivoting portion, the sliding rod is slidably disposed on the rocker, and the other end of the output rod is connected to the one-way driving portion; one end of the rocking rod is pivotally connected to The frame pivoting portion is slidably disposed on the guiding groove of the eccentric disk; and the one-way driving portion is used for interlocking The output portion is rotated; thereby, after the input shaft is driven to rotate, the eccentric disk is driven to rotate eccentrically, so that the N sets of interlocking mechanisms are sequentially actuated, and the output portion is rotated in conjunction with the output. The connecting rod type stepless speed change device of claim 1, wherein adjusting the distance between the lever, the sliding rod and the output rod to the pivotal portion of the rack is up to a shifting speed The output portion is not driven by the linkage mechanism when one end of the lever, the sliding rod and the output rod are pivotally connected to the frame pivoting portion. The link type stepless speed change device according to claim 1, wherein the disc frame system There is also a fixing element for fixing the shaft portion to the frame. The link type 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 a gear portion 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 is unidirectionally linked The component is disposed at two 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 shaft reaches the rotation.