TWI567317B - Multi-mode continuously variable transmission mechanism - Google Patents

Description

Multi-mode stepless shifting mechanism

The present invention relates to a multi-mode stepless shifting mechanism, and more particularly to a multi-mode stepless shifting mechanism suitable for a locomotive.

For a general vehicle, if the vehicle is driven by the stepless shifting mode, a stepless shifting mechanism must be provided in the vehicle.

1 is a cross-sectional view of a conventional stepless shifting mechanism. The stepless shifting mechanism 9 includes an input shaft 91, a drive plate set 92, a power output shaft 93, a drive plate set 94, and a drive belt 95. The drive belt 95 is surrounded by the drive disc set 92 and the drive disc set 94. The drive disc set 92 includes a drive disc 921, a slide drive disc 922, a stop disc 923, and a plurality of balls 924, and a drive disc set. 94 includes a drive plate 941, a slide drive plate 942, and a drive plate spring 943. The drive plate 941 is coaxially fixed to the output shaft 93, and the slide drive plate 942 is coaxially slidably disposed on the output shaft 93, and the additional input shaft 91 is coupled to a vehicle engine 96.

The principle of operation is that the input shaft 91 can transmit the rotational power of the vehicle engine 96 to the output shaft 93 via the transmission belt 95 in a stepless shifting manner. The rotational power of the output shaft 93 then drives the front or rear wheels of the vehicle (not shown). And the rotation of the input shaft 91 can cause the plurality of balls 924 to push the sliding drive plate 922 to axially slide along the input shaft 91 by its centrifugal force, and the drive plate spring 943 pushes the sliding drive plate 942 with its elastic force to make the sliding transmission The disk 942 is axially slidable along the output shaft 93.

The above-mentioned mechanical V-belt stepless shifting structure mostly uses parameters such as ball weight and spring force of the drive disc spring to achieve a specific shift mode required, and therefore, only a single shift mode can be set. With the development of the electronic control system, the industry has developed an electronically controlled V-belt stepless shifting structure, which directly sets each different shifting mode in the computer and directly controls it by computer, but since such a system needs to be Complex computer hardware and software settings can achieve the required functions, and the cost is naturally relatively high.

In view of the above, only the single shift mode can be set. The JP5506601 patent of Japan Honda Company proposes a stepless speed change mechanism. Referring to Figure 4 of the JP5506601 patent specification, it can be seen that the mechanism for controlling the shifting speed has both conventional balls and new ones. The additional actuator uses the centrifugal force of the ball to push the sliding drive disc to slide axially along the input shaft, and the output shaft of the newly added actuator is used to push the sliding drive disc, and the thrust of the actuator is In addition, the controller performs programmatic control, so that different driving modes can be achieved.

However, the design of the JP5506601 patent has a major drawback. Since the output shaft of the actuator is arranged in parallel with the input shaft, the thrust of the output shaft of the actuator is transmitted to the sliding drive plate by a transverse link. The delivery mode causes a bending moment (Bending Moment) on the output shaft and the connecting rod relative to the input shaft during the operation. Therefore, in the practical application, the patent is easy to make the sliding driving disc not smooth on the input shaft. Exercise is not very ideal, there is still room for improvement.

Because of this, the inventor of this invention, in the spirit of active invention and creation, considers a "multi-mode stepless shifting mechanism" that can solve the above problems, and has completed research and experiments to complete the present invention.

The main object of the present invention is to provide a multi-mode stepless shifting mechanism by changing the output shaft and the input shaft of the actuator to a "coaxial" configuration, so that the output shaft does not generate relative to the input shaft when the actuator is actuated. The bending moment can make the sliding drive plate slide smoothly axially on the input shaft to achieve different shifting characteristics.

In order to achieve the above object, the multi-mode stepless shifting mechanism of the present invention comprises: an input shaft, a driving disc group, a stud pressing plate, a driving device and a ball bearing. among them. The driving disc group comprises a driving disc, a sliding driving disc, a non-moving pressing plate and a plurality of driving components. The driving disc and the non-moving pressing plate are coaxially fixed on the input shaft, and the sliding driving disc is located between the driving disc and the non-moving pressing plate, and is coaxial Sliding on the input shaft, the driving disc is provided with a plurality of through holes, and the sliding driving disc is fixed with a plurality of protruding columns respectively corresponding to the plurality of through holes, and when the input shaft rotates, the plurality of driving elements can be driven by the centrifugal force thereof. Pushing the sliding drive disc to slide axially along the input shaft; the stud pressing plate has an inner annular surface and is coupled with the front end of each of the sliding drive discs; The driving device has an output shaft coupled to the column pressing plate, and provides a power for axially pushing the column pressing plate; the ball bearing sleeve is disposed on the output shaft of the driving device and adjacent to the inner ring surface of the column pressing plate. So that the output shaft of the drive does not rotate with the input shaft.

The above drive device can be an actuator, or other equivalent function drive device.

The input shaft and the output shaft of the driving device can be located on the same axis. When the driving device is actuated, the output shaft does not generate a bending moment with respect to the input shaft, and thus does not affect the smooth sliding of the sliding driving plate on the input shaft. .

The ball bearing can be fixed on the column pressing plate by a first buckle, or can be fixed on the output shaft of the driving device by a second buckle, so that the column pressing plate, the sliding driving plate and the input shaft can be together Rotate, but the output shaft of the drive does not rotate with the input shaft.

The above-mentioned stud pressing plate can be fixed to each of the studs by a plurality of locking members, and the locking member can be a fixing member such as a screw or a rivet.

The plurality of studs and the sliding drive disc may be of a one-piece structure, or may be a combination of a plurality of individual components.

The above drive elements can be balls or rollers.

1‧‧‧Intake shaft

2‧‧‧ drive panel

21‧‧‧ drive disk

210‧‧‧through holes

22‧‧‧Sliding drive

220‧‧‧Bump

23‧‧‧No moving plate

24‧‧‧Drive components

25‧‧‧Locker

26‧‧‧Posted column plate

260‧‧‧ Inner torus

27‧‧‧ drive

270‧‧‧ Output shaft

28‧‧‧Ball bearings

291‧‧‧First buckle

292‧‧‧Second buckle

33‧‧‧Output shaft

34‧‧‧Drive disc set

341‧‧‧Drive disk

342‧‧‧Sliding drive plate

343‧‧‧Driven spring

35‧‧‧Drive belt

9‧‧‧Stepless speed change mechanism

91‧‧‧Inlet shaft

92‧‧‧ drive panel

921‧‧‧ drive disk

922‧‧‧Sliding drive plate

923‧‧ ‧ stop plate

924‧‧‧ balls

93‧‧‧Output shaft

94‧‧‧Drive disc set

941‧‧‧ drive disk

942‧‧‧Sliding drive plate

943‧‧‧Driven spring

95‧‧‧Drive belt

96‧‧‧Vehicle Engine

Figure 1 is a cross-sectional view of a conventional stepless shifting mechanism.

Figure 2 is a cross-sectional view of a stepless shifting mechanism in accordance with a preferred embodiment of the present invention.

Figure 3 is a partially enlarged exploded view of the stepless shifting mechanism of a preferred embodiment of the present invention.

Please refer to FIG. 2 and FIG. 3 , which are respectively a cross-sectional view and a partially enlarged exploded view of the stepless shifting mechanism according to a preferred embodiment of the present invention. The multi-mode stepless shifting mechanism of the embodiment includes: an input shaft 1, a driving disc group 2, an output shaft 33, a transmission disc group 34, a transmission belt 35, a column pressing plate 26, and a driving device 27. A ball bearing 28, a first buckle 291, a first buckle 292 and a plurality of locks 25.

The driving disk unit 2 includes a driving plate 21, a sliding driving plate 22, a stationary pressing plate 23 and a plurality of driving elements 24. The driving plate 21 and the stationary pressing plate 23 are coaxially fixed on the input shaft 1, and the sliding driving plate 22 is driven. The disk 21 and the non-moving platen 23 are coaxially slidably disposed on the input shaft 1. The driving plate 21 is provided with a plurality of through holes 210, and the sliding driving plate 22 is fixed with a plurality of plurality of through holes respectively corresponding to the driving plate 21. The stud 220 of 210. In addition, when the input shaft 1 rotates, the plurality of driving elements 24 can be urged to push the sliding drive disk 22 axially along the input force shaft 1 by its centrifugal force. In the present embodiment, the drive element 24 is a ball.

As shown in FIG. 2, the drive plate set 34 includes a drive plate 341, a slide drive plate 342, and a drive plate spring 343. The drive plate 341 is coaxially fixed to the output shaft 33, and the slide drive plate 342 is coaxially slidably disposed on the output shaft 33. The drive disc spring 343 is axially slid along the output shaft 33 by pushing the sliding drive disc 342 with its elastic force, and the transmission belt 35 It is surrounded between the drive disc group 2 and the drive disc group 34.

As shown in FIG. 3, the stud platen 26 has an inner annular surface 260 that is coupled to the front end of each of the studs 220 of the sliding drive disc 22. In this embodiment, the stud pressing plate 26 is fixed to each of the bosses 220 of the slide driving disc 22 by a plurality of locking members 25, that is, the stud pressing plate 26 and the sliding driving disc 22 can be rotated together with the driving shaft 1 .

The drive unit 27 has an output shaft 270 coupled to the stud plate 26, and the drive unit 27 provides a power for axially propelling the stud plate 26. In the present embodiment, the drive unit 27 is an actuator, and the output shaft 270 is disposed coaxially with the input shaft 1.

As shown in FIG. 3, the ball bearing 28 is sleeved on the output shaft 270 of the drive unit 27 and abuts the inner annular surface 260 of the stud platen 26. The ball bearing 28 is fixed to the stud pressing plate 26 by a first retaining ring 291 and is fixed to the output shaft 270 of the driving device 27 by a second retaining ring 292. By the arrangement of the ball bearings 28, the output shaft 270 of the drive unit 27 can be prevented from rotating together with the input shaft 1.

In the present embodiment, the input shaft 1 and the output shaft 270 of the driving device 27 are on the same axis, and the plurality of bosses 220 of the sliding drive disk 22 and the sliding drive plate 22 are integrally formed.

When the engine is in operation, the stepless shifting mechanism of the embodiment is operated in such a manner that the input shaft 1 can transmit the rotational power of the locomotive engine to the output shaft 33 via the transmission belt 35 in a stepless shifting manner, and the rotational power of the output shaft 33 Go to drive the front or rear wheel of the locomotive. The rotation of the input shaft 1 can cause the plurality of driving elements 24 to push the sliding drive disk 22 along its centrifugal force. The shaft 1 is axially slid and thus is shiftable. In this embodiment, in addition to using the plurality of driving elements 24 to push the sliding driving disc 22 axially along the input shaft 1 by its centrifugal force, a driving device 27 is provided. The driving device 27 has an output shaft 270, an output shaft 270 and an input force. The shaft 1 is in a "coaxial" configuration, and the output shaft 270 can drive the column pressing plate 26 to slide axially, thereby driving the sliding driving plate 22 to slide axially along the input shaft 1 to achieve different shifting characteristics. That is, the present embodiment has two modes of simultaneously controlling the shifting characteristics, one is the centrifugal force of the driving element 24, and the other is the power of the driving device 27, both of which are used to control the sliding of the sliding driving disk 22 along the input shaft 1 for axial sliding. .

In this embodiment, the output shaft 270 of the driving device 27 and the input shaft 1 are designed to be "coaxial". When the output shaft 270 is actuated, no bending moment is generated with respect to the input shaft 1, and the sliding drive disk 22 can be inserted. The shaft 1 slides smoothly axially to achieve different shifting characteristics.

The above-mentioned embodiments are merely examples for convenience of description, and the scope of the claims is intended to be limited to the above embodiments.

1‧‧‧Intake shaft

2‧‧‧ drive panel

21‧‧‧ drive disk

210‧‧‧through holes

22‧‧‧Sliding drive

220‧‧‧Bump

23‧‧‧No moving plate

24‧‧‧Drive components

25‧‧‧Locker

26‧‧‧Posted column plate

260‧‧‧ Inner torus

27‧‧‧ drive

270‧‧‧ Output shaft

28‧‧‧Ball bearings

291‧‧‧First buckle

292‧‧‧Second buckle

35‧‧‧Drive belt

Claims (7)

A multi-mode stepless shifting mechanism includes: an input shaft; a driving disc set including a driving disc, a sliding driving disc, a stationary pressing plate and a plurality of driving components, wherein the driving disc and the non-moving pressing plate are coaxially fixed On the input shaft, the sliding driving disc is located between the driving disc and the non-moving pressing plate, and is coaxially slidably disposed on the input shaft. The driving disc is provided with a plurality of through holes, and the sliding driving disc is fixed with a plurality of respectively Corresponding to the protruding post of the plurality of through holes, when the input shaft rotates, the plurality of driving elements can be pushed by the centrifugal force to push the sliding driving disc to slide axially along the input shaft; a protruding column pressing plate has a An inner ring surface is coupled to the front end of each of the protruding posts; a driving device having an output shaft coupled to the protruding column pressing plate, providing a power for axially pushing the protruding column pressing plate; and a ball bearing and sleeve And on the output shaft, adjacent to the inner annular surface of the stud pressing plate, so that the output shaft does not rotate together with the input shaft; wherein the input shaft and the output shaft are on the same axis. The multi-mode stepless shifting mechanism of claim 1, wherein the driving device is an actuator. The multi-mode stepless shifting mechanism of claim 1, wherein the ball bearing is fixed to the stud pressing plate by a first buckle. The multi-mode stepless shifting mechanism of claim 1, wherein the ball bearing is fixed to the output shaft by a second buckle. The multi-mode stepless shifting mechanism of claim 1, wherein the stud pressing plate is fixed to each of the studs by a plurality of fasteners. The multi-mode stepless shifting mechanism of claim 1, wherein the plurality of studs and the sliding drive disc are integrally formed. The multi-mode stepless shifting mechanism of claim 1, wherein the plurality of driving elements are balls or rollers.