TWI525274B - Switch module for continuously variable transmission mechanism - Google Patents

Description

Switching module of stepless speed change mechanism

The invention relates to a switching module of a stepless speed change mechanism, in particular to a switching module suitable for a stepless speed change mechanism of 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. Referring to FIG. 7, a cross-sectional view of a conventional stepless shifting mechanism includes a crankshaft. 91. A drive plate set 92, an output shaft 93, a drive plate set 94, and a drive belt 95. The crankshaft 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 rotational power of the output shaft 93 drives the front or rear wheels of the vehicle.

In the previous case, the drive panel and the switching module of the stepless shifting mechanism have been improved and corrected. As shown in FIG. 8, a cross-sectional view of the switching module of the conventional stepless shifting mechanism is shown. A drive disk set 92 is illustrated which includes a drive plate 921, a slide drive disk 922, a stationary platen 923, a movable platen 925, and a plurality of drive elements 924. In order to achieve the desired change In the speed mode, a switching module 97 is required to change the axial position of the plurality of driving elements 924 inside the driving disk group, so that the plurality of driving elements 924 push the sliding driving plate 922 to axially slide along the crankshaft 91 by centrifugal force. Different shift modes are produced.

In the prior art, the switching module 97 includes: a driven gear 971 having an internal thread, a driving gear 972 meshing with the driven gear 971, and a motor 973 connected to the driving gear 972. And a sleeve 974 having an external thread. The operation of the switching module 97 is as follows: the motor 973 drives the driving gear 972 to rotate to drive the driven gear 971 to rotate, and the driven gear 971 is screwed to the outside of the sleeve 974 by the internal screw, and the driven gear is driven. The 972 is fixed in the axial direction. When the driven gear 971 is rotated, the sleeve 974 can be axially displaced by the action of the inner and outer threads, so that the movable platen 925 can be driven by the movement of the sleeve 974. A displacement occurs in the axial direction.

However, the switching module shown in FIG. 8 is sleeved on the crankshaft 91 by the driving gear 971. Also, in order not to be affected by the rotation of the crankshaft, another bearing 98 is required to assist the movable platen 925 as the axial direction. Sliding, but also increasing the axial width occupied by the entire switching module 97, excessive component and excessive axial width may be detrimental to the overall engine arrangement.

Because of this, in the spirit of active invention, this paper considers a switching module of a stepless speed change mechanism that can solve the above problems, and finally completes the present invention after several research experiments.

The main object of the present invention is to provide a switching module for a stepless speed change mechanism, which can reduce the volume occupied by the switching module on the crankshaft, greatly reduce the axial width, and facilitate the overall configuration of the engine.

To achieve the above object, a switching module of the stepless shifting mechanism of the present invention includes a motor, a driving gear, a roller disc and a track disc. The driving disc set of the stepless shifting mechanism defined by the present invention comprises a driving disc, a sliding driving disc, a fixed pressing plate provided with a plurality of slots, a movable pressing plate having a plurality of protruding portions and a plurality of driving components, and driving The disk and the movable platen are coaxially fixed on a crankshaft, and the sliding drive plate is located between the driving plate and the non-moving platen, and is coaxially slidably disposed on the crankshaft, and the plurality of driving components are disposed between the sliding driving plate and the stationary pressing plate. According to this configuration, the driving disc group of the stepless shifting mechanism changes the transmission ratio of the input and output of the transmission belt by using the position change of the driving component, thereby obtaining the shifting effect.

In the switching module, the driving gear train is connected with the motor, and the motor is used as a power source for switching different modes. The roller disc includes an opening portion and a plurality of rollers. The track disc includes a gear portion, a plurality of rails and a plurality of gear stops, and the gear wheel The portion is fixed on the outer surface of the orbital disk and meshes with the driving gear. Each of the rails has an inclined surface, which comprises a track axially high and a track axially low.

Wherein, each roller of the roller disc is correspondingly slidably disposed on each track of the track disc, and each of the rollers protrudes when the track is axially high. The system can extend into each slot to move axially against each of the drive elements. At this time, the above state is one of the shift modes of the switching module. When each roller is at a low position in the axial direction of the track, each of the projections does not project into each slot. At this time, the above state is another shift mode of the switching module. Therefore, the above two shift modes are included in the present invention.

The roller disc can be fixed on a left crankcase, the opening can be aligned with the center of the crankshaft, and the plurality of rollers of the roller disc can be three rollers. Thereby, the position of the roller disc is defined, and a sliding structure with three rollers is provided.

The operation principle of the above switching module is as follows: the motor drives the driving gear to rotate and drives the gear portion of the track plate to rotate, and the track plate will rotate around the crankshaft, and the roller plate is fixed on the crankcase, so when the track When the disk rotates, the inclined surface of the track is affected by the roller, and the axial displacement occurs due to the difference in the height of the slope.

Furthermore, the plurality of tracks of the track disk may be three tracks, and the inner ring surface of the track disk may further include a bearing for separating the crankshaft power so that the track disk cooperates with the motor and the drive gear to move without being cranked. Impact.

In addition, the plurality of driving elements may be a plurality of balls or may be a plurality of rollers, and the centrifugal force during the rotation process makes the amount of movement of the sliding driving disk in the axial direction more significant, thereby changing the position of the transmission belt.

The above overview and the following detailed description are exemplary It is intended to further illustrate the scope of the patent application of the present invention. Other objects and advantages of the present invention will be described in the following description and drawings.

1‧‧‧Switching module

11‧‧‧Motor

12‧‧‧ drive gear

13‧‧‧Rolling wheel

131‧‧‧ openings

132‧‧‧Roller

133‧‧‧edge recess

14‧‧‧Track disk

141‧‧‧ Gear Department

142‧‧‧ Track

143‧‧‧ stop

144‧‧‧ sloped surface

145‧‧‧ Track height in the axial direction

146‧‧‧ Tracks are axially low

15‧‧‧ bearing

2‧‧‧ drive panel

21‧‧‧ drive disk

22‧‧‧Sliding drive

23‧‧‧No moving plate

231‧‧‧ slotting

24‧‧‧Drive components

25‧‧‧ movable platen

251‧‧‧protrusion

3‧‧‧ crankshaft

31‧‧‧ Left crankcase

91‧‧‧ crankshaft

92‧‧‧ drive panel

921‧‧‧ drive disk

922‧‧‧Sliding drive plate

923‧‧‧No moving plate

924‧‧‧Drive components

925‧‧‧ movable platen

93‧‧‧Output shaft

94‧‧‧Drive disc set

95‧‧‧Drive belt

96‧‧‧Vehicle Engine

97‧‧‧Switch Module

971‧‧‧ driven gear

972‧‧‧ drive gear

973‧‧‧Motor

974‧‧‧Sleeve

98‧‧‧ bearing

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a cross-sectional view of a preferred embodiment of the present invention.

2 is a perspective view of a roller disc and a track disc in accordance with a preferred embodiment of the present invention.

Figure 3 is a partial enlarged view of a preferred embodiment of the present invention.

Figure 4 is an exploded exploded view of a preferred embodiment of the present invention.

FIG. 5 is a schematic view showing the slot of the movable platen protrusion not inserted into the slot of the fixed pressure plate according to a preferred embodiment of the present invention.

Figure 6 is a schematic view showing the insertion of the movable platen projection into the slot of the stationary platen according to a preferred embodiment of the present invention.

Figure 7 is a cross-sectional view of a conventional stepless shifting mechanism.

Figure 8 is a cross-sectional view of a conventional switching module of the stepless shifting mechanism.

As shown in FIG. 1 , a cross-sectional view of a preferred embodiment of the present invention, wherein the figure includes a driving disc group 2 and a switching module 1 of a stepless shifting mechanism, and the switching module 1 of the stepless shifting mechanism of the present invention is required. In conjunction with the drive panel 2 to achieve the shifting effect, the structural features of the drive panel 2 will be emphasized in the text. The drive disk unit 2 of the stepless speed change mechanism includes a drive plate 21 and a sliding drive The movable plate 22, a stationary platen 23, a movable platen 25 and a plurality of driving elements 24. In the present embodiment, the driving element 24 is a ball, but it is not limited thereto, and may be a roller or other rolling unit. The switching module 1 includes a motor 11, a driving gear 12, a roller disk 13, a track disk 14, and a bearing 15. In the present embodiment, the roller disc 13 is fixed to the left crankcase 31. In addition, a crankshaft 3 is shown as an input shaft for transmitting the rotational power of the vehicle engine to the stepless shifting mode. The front or rear wheel of the vehicle.

For the arrangement of the driving disk group 2 of the present invention and the corresponding relationship with the crankshaft, please refer to the following description. The driving disk 21 and the stationary pressing plate 23 are coaxially fixed on the crankshaft 3, and the sliding driving disk 22 is located on the driving disk 21 and the stationary pressing plate 23. Between the two, the plurality of driving elements 24 are disposed between the sliding driving plate 22 and the stationary pressing plate 23. Thereby, the movable element and the fixed element in the drive disk group 2 of the stepless speed change mechanism are defined, and the corresponding arrangement relationship between them is defined, which facilitates the description of the subsequent embodiments.

Please refer to FIG. 2 to FIG. 3, which are perspective views of a roller disk and a track disk according to a preferred embodiment of the present invention, and a partial enlarged view of a preferred embodiment of the present invention. As shown in the figure, the roller disc 13 is an annular thin plate. In this embodiment, there is an edge recess 133. Since the space of each component is narrow, in order to give an extra space to a part of the box of the left crankcase 31, there is In addition to the design of the edge recess 133, the roller tray 13 includes an opening portion 131 and three rollers 132. The opening portion 131 is aligned with the center of the crankshaft and is sleeved on the crankshaft 3.

The track disk 14 is a ring structure including a gear portion 141, the three-track 142 and the three-stop 143, the gear portion 141 is fixed on the outer ring surface of the track disk 14, and only occupies about one-third of the arc, and is used for meshing with the driving gear 12, The drive gear 12 is coupled to the motor 11, and each of the rails 142 has an inclined surface 144. The inclined surface 144 includes a track axial height 145 and a track axial low 146. Between the two rails 142, there is a stop portion 143, which is the wall surface of the groove of the rail 14, for abutting the driving element in the rail 14, as the rail axial height 145 and a track axial low 146 driving component The end point of the slide.

Next, please refer to FIG. 4, which is an exploded view of a preferred embodiment of the present invention. The arrangement relationship between the driving disc group 2 and the switching module 1 of the stepless shifting mechanism on the crankshaft is mainly shown. The driving disc 21 (not shown) at the end of the crankshaft 13 is sequentially: the sliding driving disc 22 and the non-moving pressing plate. 23. The movable platen 25, the bearing 15, the track plate 14, and the roller plate 13, wherein the bearing 15 is assembled on the inner annular surface of the track disk 14 for separating the power of the crankshaft 3. Further, the stationary platen 23 is provided with a plurality of slots 231 corresponding to the plurality of projections 251 of the movable platen 25 for providing the movable platen 23 and the movable platen 25 which are axially movable and aligned, thereby changing the different shift modes.

The shifting principle and the implementation manner of the present invention are as follows. Please refer to FIG. 5 and FIG. 6 simultaneously. FIG. 5 is a schematic diagram showing the slot of the movable pressure plate protruding portion not inserted into the movable pressure plate according to a preferred embodiment of the present invention, and the movable pressure plate protruding portion is inserted into the fixed pressure plate. Schematic diagram of the slotting.

As shown in FIG. 5, the stationary platen 23 is located on the sliding drive plate. Between 22 and the movable platen 25, the movable platen 25 can slide back and forth in the axial direction on the crankshaft. When the stepless shifting mechanism is in the first shifting mode, each of the rollers 132 of the roller disc 13 is located at a lower axial position 146 of the rail. At this time, the motor 11 of the switching module 1 has not been activated, so each projection 251 is not Correspondingly, each slot 231 is inserted.

When the user switches the stepless shifting mechanism to the second shifting mode, the motor 11 is first started to drive the driving gear 12 to rotate, and then the meshing action of the driving gear 12 and the gear portion 141 of the track disc 14 causes the rail to be made. The disk 14 rotates around the crankshaft 3, and the roller disk 13 is fixed to the crankcase 31. Therefore, when the track disk 14 rotates, the inclined surface 144 of the track 142 having the height difference is slid by the roller 132. , and an axial displacement is produced.

As shown in FIG. 6, when the user smoothly switches to the second shifting mode, each of the rollers 132 is located at an axially high position 145, and each of the protruding portions 251 can extend into each of the slots 231 to meet the top. Each of the drive elements 24 moves in the axial direction and the shifting is successfully performed. Therefore, the switching module of the stepless speed change mechanism of the present invention can reduce the volume occupied by the switching module on the crankshaft by increasing the design of the roller disk 13 and the track disk 14, and greatly reduce the axial width, thereby facilitating the overall configuration of the engine.

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‧‧‧Switching module

11‧‧‧Motor

12‧‧‧ drive gear

13‧‧‧Rolling wheel

14‧‧‧Track disk

15‧‧‧ bearing

2‧‧‧ drive panel

21‧‧‧ drive disk

22‧‧‧Sliding drive

23‧‧‧No moving plate

24‧‧‧Drive components

25‧‧‧ movable platen

3‧‧‧ crankshaft

31‧‧‧ Left crankcase

Claims (9)

A switching module of the stepless speed change mechanism, the driving disk group of the stepless speed changing mechanism comprises a driving plate, a sliding driving plate, a fixed pressing plate with a plurality of slots, a movable pressing plate having a plurality of protruding portions, and plural a drive unit, the drive plate and the fixed platen are coaxially fixed on a crankshaft, the slide drive plate is located between the drive plate and the fixed platen, and is coaxially slidably disposed on the crankshaft, and the plurality of drive components are disposed Between the sliding drive plate and the stationary platen, the switching module includes: a motor; a drive gear coupled to the motor; a roller plate including an opening and a plurality of rollers; and a track disk The gear portion is fixed on the outer surface of the outer surface of the orbital disk and engages with the driving gear. Each of the rails has an inclined surface, and the inclined surface includes an inclined surface. The track is axially high and a track is axially low; wherein each roller of the roller disk is correspondingly slidably disposed on each of the tracks of the track disk, when each roller is axially At the time, the portion of each projection extending into the lines may correspond to each slot, each drive element abuts against the axial direction. The switching module of the stepless speed change mechanism according to claim 1, wherein each of the protruding portions does not correspondingly extend into each of the openings when the roller is at a low position in the axial direction of the track. groove. The switching module of the stepless speed change mechanism according to claim 1, wherein the roller disk is fixed on a left crankcase. The switching module of the stepless speed change mechanism according to the first aspect of the invention, wherein the switching module further comprises a bearing disposed on the inner ring surface of the track disk for separating the crankshaft power. The switching module of the stepless speed change mechanism according to claim 1, wherein the opening portion is aligned with the center of the crankshaft. The switching module of the stepless speed change mechanism according to claim 1, wherein the plurality of driving elements are plural balls. The switching module of the stepless speed change mechanism according to claim 1, wherein the plurality of driving elements are plural rollers. The switching module of the stepless speed change mechanism according to claim 1, wherein the plurality of tracks are three tracks. The switching module of the stepless speed change mechanism according to claim 1, wherein the plurality of rollers are three rollers.