TWI568951B - 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 transmission. 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.

Therefore, 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, and the output shaft The rotating power of 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 conventional mechanical V-belt stepless shifting structure mostly uses parameters such as a ball counterweight and a spring force of a drive disc spring to achieve a desired specific shift mode. 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-mentioned patent application for Taiwan's 102120920 "Multi-mode stepless shifting mechanism", please refer to Figure 2, Figure 3A and Figure 3B, respectively, which are the fixed platen of the patent. The plan view, the convex portion of the movable platen are not inserted into the groove of the stationary platen, and the schematic view of the projection of the movable platen inserted into the slot of the stationary platen. Wherein, in the patent case, the plurality of balls 84 are disposed between the sliding driving plate 82 and the stationary pressing plate 83, and the stationary pressing plate 83 is provided with a plurality of slots 831, wherein the function of the fixed pressing plate 83 is the same as that of the stepless shifting mechanism of FIG. The movable platen 923 is disposed on the outer side of the stationary platen 83, and has a plurality of protruding portions 851. Each of the protruding portions 851 can extend into each of the slots 831, and the movable platen 85 is controlled by the switching module. Can be moved axially and can be changed The axial position of the movable platen 85. In addition, a ball bearing 86 is sleeved on the other side of the movable platen 85.

When the plurality of projections 851 of the movable platen 85 are correspondingly inserted into the plurality of slots 831 of the stationary platen 83, the track surface of the plurality of projections 851 of the movable platen 85 protrudes from the track surface of the stationary platen 83, because the platen 83 and the movable platen are not moved. The shape of the orbital surface of the projection portion 851 of the 85 is different, and the plurality of balls 84 are axially moved relative to each other along the orbital surface of the projection portion 851 of the movable platen 85, and the different axial positions have different shifting modes. As shown in FIGS. 3A and 3B, the movable platen 85 is set to have two axial positions, and thus has a two-stage shift mode.

The second-stage shift mode switching mechanism of the above-mentioned Taiwan Patent No. 102120920 is to form a long slot 831 formed on the track surface of the ball 84 of the stationary platen 83, and inserted into the protrusion 851 of the movable platen 85 through the slot 831. As the track surface of the ball 84, two shift modes are achieved. Since the groove 831 is cut out on the track surface of the original ball 84, and the new track surface of the ball 84 is formed by the protrusion 851, the contact area of the ball 84 is smaller than the original, which directly affects the wear durability of the ball 84. Further, the protruding portion 851 of the movable platen 85 is inserted into the slot 831 of the stationary platen 83, and it is also easy to generate a knocking sound due to both engine vibrations, which is not ideal, and there is 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 adopting a four-bar linkage mechanism to achieve a multi-step shifting mode, the contact area between the driving component and the blocking block can be increased, and the durability of the driving component can be improved. Significantly improve the conventional multi-speed shift mode. The fixed slot is used to open the long slot with the movable platen. When the engine is running, the movable platen and the fixed platen produce a mutual knocking sound.

To achieve the above object, the multi-mode stepless shifting mechanism of the present invention comprises: an input shaft and a driving disc set, the driving disc set includes a driving disc, a sliding driving disc, a non-moving pressing plate and a plurality of driving components, a driving disc and The non-moving pressure plate is coaxially fixed on the input shaft, and the sliding driving plate is located between the driving plate and the non-moving platen, and is coaxially slidably disposed on the input shaft. When the input shaft rotates, the plurality of driving elements can be pushed and pushed by the centrifugal force thereof. The drive plate slides axially along the input shaft.

The main technical feature of the present invention is that the fixed pressure plate is provided with a plurality of openings, and the driving plate group further comprises a movable pressing plate having a plurality of protruding pins, a plurality of blocking blocks and a connecting rod, wherein the movable pressing plate is disposed on the outer side of the stationary pressing plate, and is coaxial Sliding on the input shaft, each protruding pin of the movable pressing plate correspondingly protrudes into each opening of the fixed pressing plate, and each of the protruding pins is connected with a blocking block at the front end, and the plurality of driving components are disposed on the sliding driving plate Between the plurality of blocking blocks and each of the plurality of blocking blocks, each of the blocking blocks is connected to the stationary platen by a connecting rod. In addition, the movable platen is connected to a switching module to control the axial movement of the movable platen, thereby changing the axial position of the movable platen.

Thereby, the invention can increase the contact between the driving element and the blocking block The area, which improves the durability of the driving element, can also greatly improve the mutual knocking sound generated by both the movable platen and the stationary platen.

The two ends of the blocking block are respectively pivotally connected with the protruding pin and the connecting rod of the movable pressing plate, and the two ends of the connecting rod are respectively pivotally connected with the blocking block and the fixed pressing plate. Thereby, the four members of the blocking block, the connecting rod, the fixed pressing plate and the movable pressing plate can be pivotally connected to each other, thereby forming a four-bar linkage mechanism, wherein only the movable pressing plate can be axially moved by the switching module, that is, The protruding pin of the movable platen can be axially moved, thereby changing the contact position and angle of the blocking block with the driving element, and achieving the function of having different shifting modes.

The switching module may include a driven gear having an internal thread, a driving gear meshing with the driven gear, a motor coupled to the driving gear, and a sleeve having an external thread. The sleeve is coupled to the movable platen, and the two are axially slidable together, and the sleeve is screwed to the internal thread of the driven gear by the external thread. Thereby, the driven gear is rotated by the motor to drive the driven gear to rotate, and the driven gear is screwed to the outside of the sleeve by the internal screw, and the driven gear is fixed in the axial direction when the driven gear is driven. When rotating, the sleeve can be axially displaced by the action of the inner and outer screws, so that the movable platen can be displaced in the axial direction by the movement of the sleeve.

The above switching module can use a motor, a gear set and a screw to convert the rotational motion of the motor into an axial displacement. In addition, it can also be achieved by means of levers, solenoid valves, linear slides and the like.

In addition, the present invention may further include a ball bearing sleeve disposed on the set of the movable pressure plate, and adjacent to the inner ring surface of the sleeve, so that the sleeve is not Rotate with the movable platen.

In addition, a ball bearing may be further disposed on the input shaft to abut the inner annular surface of the driven gear so that the driven gear does not rotate together with the input shaft. Further, the plurality of driving elements described above may be one of a ball or a roller.

1‧‧‧Intake shaft

2‧‧‧ drive panel

21‧‧‧ drive disk

22‧‧‧Sliding drive

23‧‧‧No moving plate

231‧‧‧ openings

232‧‧‧No moving plate body

233‧‧‧No moving plate ribs

24‧‧‧Drive components

25‧‧‧ movable platen

251‧‧‧ protruding pin

252‧‧‧Setting Department

26‧‧‧ block

27‧‧‧ Connecting rod

5‧‧‧Switching module

51‧‧‧Driven gears

511‧‧‧ internal thread

52‧‧‧ drive gear

53‧‧‧Motor

54‧‧‧ sleeve

541‧‧‧ External thread

6‧‧‧Ball bearings

7‧‧‧Ball bearings

82‧‧‧Sliding drive plate

83‧‧‧No moving plate

831‧‧‧ slotting

84‧‧‧ balls

85‧‧‧ movable platen

851‧‧‧ protruding parts

86‧‧‧Ball bearings

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 plan view of a fixed platen of a conventional multi-mode stepless shifting mechanism.

FIG. 3A is a schematic view showing that the protruding portion of the movable platen of the conventional multi-mode stepless shifting mechanism is not inserted into the slot of the stationary platen.

FIG. 3B is a schematic view showing the insertion of the protruding portion of the movable platen of the conventional multi-mode stepless shifting mechanism into the slot of the stationary platen.

Figure 4 is a cross-sectional view of a preferred embodiment of the multi-mode stepless shifting mechanism of the present invention.

Figure 5 is a partial enlarged view of Figure 4.

Figure 6A is a perspective view of a preferred embodiment of the four-bar linkage mechanism of the present invention.

Figure 6B is a perspective view of a different perspective view of a preferred embodiment of the four-bar linkage mechanism of the present invention.

Figure 6C is an exploded view of a preferred embodiment of the four-bar linkage mechanism of the present invention.

FIG. 7A is a schematic diagram of the four-bar linkage mechanism of the present invention in which the driving element of the mode 1 does not push the sliding driving disk.

7B is a schematic view of the four-bar linkage mechanism of the present invention pushing the sliding drive disk in the mode of the driving element.

FIG. 8A is a schematic view of the four-bar linkage mechanism of the present invention in which the driving element of the mode 2 is not pushed up.

FIG. 8B is a schematic diagram of the driving device of the four-bar linkage mechanism of the present invention pushing the sliding driving disk in the mode 2.

Please refer to FIG. 4, FIG. 5 and FIGS. 6A, 6B and 6C, which are respectively a cross-sectional view, a partially enlarged cross-sectional view of a preferred embodiment of the multi-mode stepless shifting mechanism of the present invention, and different perspectives of a preferred embodiment of the four-bar linkage mechanism. Stereo view and exploded view. The multi-mode stepless shifting mechanism of the embodiment is assembled on a locomotive and includes: an input shaft 1, a driving disc group 2, a switching module 5, and two ball bearings 6, 7. The drive plate set 2 includes a drive plate 21, a slide drive plate 22, a stationary platen 23, a movable platen 25, a plurality of stop blocks 26, a plurality of links 27, and a plurality of drive elements 24.

The driving disk 21 and the stationary pressing plate 23 of the embodiment are coaxially fixed on the input shaft 1, and the sliding driving plate 22 is located between the driving plate 21 and the stationary pressing plate 23, and is coaxially slidably disposed on the input shaft 1, and the plurality of driving elements The 24 series is disposed between the slide driving disk 22 and the stationary platen 23, and the driving element 24 of the present embodiment is a ball. When the input shaft 1 rotates, the plurality of driving elements 24 can be caused to push the sliding drive disk 22 to axially slide along the input shaft 1 by its centrifugal force.

As shown in FIG. 5, the movable platen 23 is provided with a plurality of openings 231. The movable platen 25 has a plurality of protruding pins 251. The movable platen 25 is disposed on the outer side of the stationary platen 23, and is coaxially slidably disposed on the input shaft 1, and the movable platen 25 is movable. Each of the protruding pins 251 respectively extends into each of the openings 231 of the stationary platen 23, and a front end of each of the protruding pins 251 is connected to a blocking block 26, and the plurality of driving elements 24 are disposed on the sliding driving plate 22 and plural Between the blocking blocks 26, each blocking block 26 is connected to the fixed pressing plate 23 by a connecting rod 27, and the movable pressing plate 25 is connected with the switching module 5, so that the switching module 5 can control the axis of the movable pressing plate 25. The movement is moved to change the axial position of the movable platen 25.

In the present embodiment, as shown in FIG. 6C, the stationary platen 23 is composed of a stationary platen body 232 and three stationary platen ribs 233. In addition, the stationary platen 23 has six openings 231. Correspondingly, the movable platen 25 has six protruding pins 251, and the number of the connecting rod 27, the stopping block 26 and the driving element 24 are six. In addition, the operating principle of the four-bar linkage mechanism of the present embodiment is that the two ends of the blocking block 26 are respectively pivotally connected to the protruding pin 251 and the connecting rod 27 of the movable platen 25. In addition, the two ends of the connecting rod 27 are respectively pivotally connected to the stopping block 26 and the stationary pressing plate 23. Therefore, the blocking block 26, the connecting rod 27, the stationary pressing plate 23 and the movable pressing plate 25 are pivotally connected to each other to form a four-bar linkage mechanism, and only the movable pressing plate 25 can be axially slid by the control of the switching module 5, thereby The position and angle of contact between the stop block 26 and the drive element 24 are variable.

In addition, the switching module 5 of the embodiment includes: a driven gear 51 having an internal thread 511, a driving gear 52 meshing with the driven gear 51, and a motor 53 connected to the driving gear 52, and A sleeve 54 having an outer thread 541, the sleeve 54 is coupled to the movable platen 25, the two of which are axially slidable together, and the sleeve 54 is screwed into the driven gear 51 by the external thread 541 Screw 511.

In the present embodiment, a ball bearing 6 is sleeved on the sleeve portion 252 of the movable platen 25 and abuts against the inner annular surface of the sleeve 54 so that the sleeve 54 does not rotate together with the movable platen 25. Further, the ball bearing 7 of the input shaft 1 of the present embodiment is disposed adjacent to the inner ring surface of the driven gear 51, so that the driven gear 51 does not rotate together with the input shaft 1.

The operating principle of the switching module 5 of the present embodiment is that the driving gear 52 is rotated by the motor 53 to drive the driven gear 51 to rotate. The driven gear 51 is screwed to the outside of the sleeve 54 by the internal thread 511. 541, and the driven gear 52 is fixed in the axial direction. When the driven gear 51 rotates, the inner and outer threads 511, 541 can be used to drive the sleeve 54 to be axially displaced, so that the sleeve 54 moves. The movable platen 25 can be displaced in the axial direction.

Please refer to FIG. 7A and FIG. 7B , which are schematic diagrams of the four-bar linkage mechanism of the present invention, which are not pushed and pushed by the driving component of the mode one. The action mode of the motor 53 of the switching module 5 is controlled to slide the sleeve 54 to drive the movable platen 25 to be displaced in the axial direction. When the movable platen 25 is slid to the position, the block 26 is vertically pushed. In the case of the element 24, it is indicated at this time that the plurality of driving elements 24 can have a small centrifugal force, that is, the sliding drive disk 22 can be pushed axially along the input shaft 1.

Please refer to FIG. 8A and FIG. 8B , which are schematic diagrams of the four-bar linkage mechanism of the fourth embodiment of the present invention, which are not pushed and pushed by the driving component of the second mode. When the movable platen 25 is slid to this position, and the block 26 is tilted to push the driving element 24, it is indicated that the plurality of driving elements 24 need to use a large centrifugal force, so as to push the sliding driving plate 22 along the input shaft 1 Axial sliding. mode Second, compared with the mode one, it can be seen that only the axial position of the movable platen 25 needs to be changed, and the multi-step shift mode can be achieved.

In this embodiment, the multi-step shift mode is achieved by the four-bar linkage mechanism, the contact area between the driving component 24 and the stopper block 26 can be increased, the durability of the driving component 24 can be improved, and the conventional multi-step shift mode can be greatly improved by using the fixed pressure plate to open the long. The slot is matched with the protruding portion of the movable pressure plate, and when the engine is running, the movable pressing plate and the non-moving pressing plate generate a mutual knocking sound.

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

22‧‧‧Sliding drive

23‧‧‧No moving plate

24‧‧‧Drive components

25‧‧‧ movable platen

252‧‧‧Setting Department

26‧‧‧ block

27‧‧‧ Connecting rod

5‧‧‧Switching module

51‧‧‧Driven gears

511‧‧‧ internal thread

52‧‧‧ drive gear

53‧‧‧Motor

54‧‧‧ sleeve

541‧‧‧ External thread

6‧‧‧Ball bearings

7‧‧‧Ball bearings

Claims (9)

A multi-mode stepless shifting mechanism includes: an input shaft and a driving disc set, the driving disc set includes a driving disc, a sliding driving disc, a stationary pressing plate and a plurality of driving components, the driving disc and the stationary pressing plate are coaxial 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. When the input shaft rotates, the plurality of driving elements can be caused to have centrifugal force thereof. The sliding driving disc is axially slid along the input shaft 1; the movable pressing plate is provided with a plurality of openings, and the driving disc group further comprises a movable pressing plate having a plurality of protruding pins, which are disposed on the sliding plate The outer side of the pressure plate is not slidably disposed on the input shaft, and each of the protruding pins protrudes into each of the openings, and the front end of each of the protruding pins is connected to a stop block, and the plurality of driving elements The driving block is disposed between the sliding driving plate and the plurality of blocking blocks, and each of the blocking blocks is connected to the fixed pressing plate by a connecting rod, and the movable pressing plate is connected with a switching module to control the movable pressing plate. It The axial movement changes the axial position of the movable platen. The multi-mode stepless shifting mechanism of claim 1, wherein the two ends of the blocking block are respectively pivotally connected to the protruding pin and the connecting rod. The multi-mode stepless shifting mechanism of claim 1, wherein the two ends of the connecting rod are respectively pivotally connected to the stopping block and the fixed pressing plate. The multi-mode stepless shifting mechanism of claim 1, wherein the blocking block, the connecting rod, the fixed pressing plate and the movable pressing plate are pivotally connected to each other to form a four-bar linkage mechanism. The multi-mode stepless shifting mechanism of claim 4, wherein the contact position and angle of the blocking block with the driving element are variable. The multi-mode stepless shifting mechanism of claim 1, wherein the switching module comprises a driven gear having an internal thread, a driving gear meshing with the driven gear, and a driving a motor connected to the gear, and a sleeve having an external thread, the sleeve being coupled to the movable platen, the two being axially slidable together, and the sleeve is screwed to the outer screw The internal thread of the driven gear. The multi-mode stepless shifting mechanism of claim 1, further comprising a ball bearing sleeve disposed on the set of the movable platen and adjacent to the inner ring surface of the sleeve to make the sleeve The barrel does not rotate with the movable platen. The multi-mode stepless shifting mechanism of claim 1, further comprising a ball bearing sleeve disposed on the input shaft and adjacent to an inner annular surface of the driven gear, so that the driven gear does not The input shaft rotates together. The multi-mode stepless shifting mechanism of claim 1, wherein the driving element is a ball or a roller.