TWI663346B - Push-type transmission - Google Patents

Abstract

The invention is a push-type speed change device, which comprises a shaft seat, a first transmission module provided in the shaft seat, and a second transmission module provided in the shaft seat and connected to the first transmission module. A transmission module, an input member connected to the first transmission module, and an output member connected to the second transmission module. The first and second modules utilize a plurality of first and second driving beads intermittently. The radial movement of the pusher pushes a plurality of first and second rotating beads, so that the rotation speed of the output member is smaller than the rotation speed of the input member. Preferably, the present invention can effectively improve the existing push-type transmission device through a simplified structure The disadvantages of large volume and occupying space make it difficult to apply in the field of precision machinery, so as to provide a push-type transmission device that can be applied to precision machinery.

Description

Push-type transmission

The invention relates to a speed change device, in particular to a push type speed change device which is small in size and can be applied to precision machinery.

The speed change device is a speed change transmission device for connecting a power source and an output end, so that the speed of the power source can be adjusted to provide a required speed at which the output end is different from the speed of the power source.

For example, TW No. I607166 discloses a push-type transmission, which transmits the power of a motor to a gear set, and then a plurality of driven gears of the gear set drives a driving member. The driving member is provided with Two cam parts, and the two cam parts respectively push the plurality of transmission rolling members to intermittently and radially move, thereby further pushing a plurality of passive rolling members provided in an output member, so that the output member rotates at a required speed .

However, as mentioned in the previous paragraph, there are many components of the existing push-type transmission, including the action between the gear set, the driving member, the plurality of transmission rolling members, and the passive rolling members of the output member. Although the device can stably provide low-speed and high-torque output, it has the disadvantages of large volume and space, and it is difficult to apply it to precision machinery fields such as robotic arms. Therefore, the existing push-type transmissions do need to be improved. .

In order to solve the shortcomings of the existing push-type transmissions that are large in size and occupy space, and are difficult to apply in the field of precision machinery, the present invention provides a push-type transmission that can effectively improve the shortcomings of the prior art through a simplified structure configuration, which is further explained below.

The invention is a push-type speed change device, which includes: A shaft seat; a first transmission module, the first transmission module is disposed inside the shaft seat, and is provided with a first fixed ring, a plurality of first rotating beads and a transmission member, wherein the first fixed ring and the The shaft seat is fixedly connected, and the first fixing ring is provided with a plurality of first pushing beads capable of moving in a radial direction, and the plurality of first rotating beads can rotate around the plurality of axes relative to the axis of the first fixing ring. Outside the first driving beads, the transmission member abuts against the plurality of first rotating beads, and is provided with a plurality of transmission positioning grooves and a transmission cam portion. The plurality of transmission positioning grooves are respectively connected with the plurality of first rotations. The beads abut against each other, so that the plurality of first rotating beads can drive the transmission member to rotate, and the transmission cam portion is annularly disposed at an end of the transmission gradually away from the plurality of transmission positioning grooves; a second transmission module, the second transmission A module is disposed inside the shaft seat and is connected to the first transmission module. The second transmission module is provided with a second fixing ring and a plurality of second rotating beads, wherein the second fixing ring is sleeved on the Outside the transmission part, the second fixing ring is provided with A plurality of second pushing beads that can move radially, and the plurality of second pushing beads abut against the driving cam portion of the transmission member, the plurality of first turning beads can rotate relative to the axis of the first fixing ring It surrounds the outside of the plurality of first pushing beads; an input member is provided inside the shaft seat, is connected to the first transmission module, and is connected to a motor device, and the input member is arranged in a ring shape. There is an input cam portion, and the input cam portion is in contact with the plurality of first pushing beads; and an output member is provided inside the shaft seat and is connected to the second transmission module. The output member A plurality of output positioning grooves are provided, and the plurality of output positioning grooves respectively abut the plurality of second rotating beads, so that the plurality of second rotating beads can drive the transmission member to rotate.

Further, in the above-mentioned push-type shifting device, wherein the push-type shifting device includes a cover body, the cover body and the shaft seat are fixedly connected to an end far from the first fixing ring, and the cover body is located on the output member in the radial direction. Outside.

Still further, in the above-mentioned push-type transmission device, the first fixing ring is provided with a first positioning piece, the first positioning piece is annularly protruded from the first fixing ring in the axial direction, and the first positioning piece is in the radial direction. A plurality of positioning holes are provided therethrough, so that each of the first pushing beads can be located radially in one of the positioning holes of the first positioning piece; the second fixing ring is provided with a second positioning piece, and the second positioning piece is annular The ground is axially protruded from the second fixing ring, and the second positioning piece is provided with a plurality of positioning holes penetrating in the radial direction, so that each of the second pushing beads can be located radially in one of the second positioning pieces. Positioning hole.

Preferably, in the above-mentioned push-type transmission, the first fixing ring is provided with a first receiving portion, the first receiving portion is annularly recessed in the first fixing ring in the axial direction, and each first rotation The bead is interposed between one of the transmission positioning grooves and the first receiving portion; the second fixing ring is provided with a second receiving portion, and the second receiving portion is annularly recessed in the second fixing along the axial direction. And each second rotating bead is interposed between one of the output positioning grooves and the second receiving portion.

With the above-mentioned technical features, the present invention uses the two-stage transmission process to utilize the intermittent radial movement of the plurality of first and second pushing beads to push the plurality of first and second turning beads, so that the The rotation speed of the output member is less than the rotation speed of the input member, which achieves the effect of deceleration and provides the user's required rotation speed. Preferably, the present invention can effectively improve the large volume and space of the existing push-type transmission through a simplified structure configuration. It is difficult to apply the shortcomings in the field of precision machinery, so as to provide a push-type transmission device that can be applied to precision machinery.

10‧‧‧ Shaft Seat

11‧‧‧Combination

12‧‧‧ compartment department

20‧‧‧The first transmission module

21‧‧‧First fixing ring

211‧‧‧The first positioning film

212‧‧‧The first push bead

213‧‧‧First accommodation department

22‧‧‧The first rotating bead

23‧‧‧ Transmission parts

231‧‧‧Drive positioning slot

232‧‧‧Drive cam

233‧‧‧Drive cam groove

24‧‧‧Inner drive bearing

25‧‧‧outer transmission bearing

30‧‧‧Second transmission module

31‧‧‧Second fixing ring

311‧‧‧Second positioning film

312‧‧‧Second Push Bead

313‧‧‧Second accommodation

32‧‧‧Second Spinning Bead

40‧‧‧ Input

401‧‧‧C-shaped fastener

402‧‧‧Front bearing

403‧‧‧rear bearing

41‧‧‧Combination groove

42‧‧‧input cam

421‧‧‧input cam groove

43‧‧‧Kashegou

50‧‧‧ output

501‧‧‧output bearing

51‧‧‧Output positioning slot

52‧‧‧Combination hole

60‧‧‧ Cover

FIG. 1 is a perspective external view of a preferred embodiment of the present invention.

FIG. 2 is an exploded perspective view of a preferred embodiment of the present invention.

FIG. 3 is a partial perspective exploded view of a preferred embodiment of the present invention.

Fig. 4 is a side sectional view of a preferred embodiment of the present invention.

Fig. 5 is an end cross-sectional view taken along the line A-A of the preferred embodiment of the present invention.

Fig. 6 is an end cross-sectional view taken along the line B-B of the preferred embodiment of the present invention.

In order to understand the technical features and practical effects of the present invention in detail, and can be implemented in accordance with the contents of the description, the preferred embodiment shown in the drawings is further described in detail as follows: The present invention is a push-type transmission, The preferred embodiment is shown in FIGS. 1 to 4 and includes a shaft base 10, a first transmission module 20, a second transmission module 30, an input member 40, an output member 50, and a cover 60. Wherein, please refer to FIG. 1, FIG. 2 and FIG. 4, the shaft base 10 is a cylinder, and an accommodation space 101 is formed inside, and the shaft base 10 is provided with a joint portion 11 and a partition portion. 12, wherein the coupling portion 11 is formed at a rear end of the shaft base 10, and a square plate is formed by protruding from the outer peripheral edge of the cylinder; the partition portion 12 is annularly protruding from the inner side wall of the shaft base 10. Is located near a front end of the shaft base 10 and divides the accommodation space 101 into two communicating parts.

Please refer to FIG. 3 and FIG. 4. The first transmission module 20 includes a first fixing ring 21, a plurality of first rotating beads 22, a transmission member 23, an inner transmission bearing 24 and an outer transmission bearing 25. The first fixing ring 21 is fixedly connected to the shaft seat 10 and is located near the rear end in the accommodation space 101. The first fixing ring 21 is provided with a first positioning piece 211 and a plurality of first pushers. The bead 212 and a first accommodating portion 213. The first positioning piece 211 is axially protruded from the front end of the first fixing ring 21, and the first positioning piece 211 is provided with a plurality of positionings radially and at intervals. The plurality of first pushing beads 212 are respectively movably disposed in the plurality of positioning holes of the first positioning piece 211; the first receiving portion 213 is recessed at the front end of the first fixing ring 21, The first positioning piece 211 surrounds the first positioning piece 211 and can extend into the front of the first accommodating portion 213 when the first pushing beads 212 move radially outward.

As shown in FIG. 3 and FIG. 4, the plurality of first rotating beads 22 are disposed on the first receiving portion 213, and are located outside the plurality of first pushing beads 212, and when the first pushing beads 212 extend, When entering the front of the first accommodating portion 213, it can abut against one of the first pushing beads 212; the rear end of the transmission member 23 Abutting against the plurality of first rotating beads 22, and the transmission member 23 includes a plurality of transmission positioning grooves 231 and a transmission cam portion 232, wherein the plurality of transmission positioning grooves 231 are recessed in the transmission member 23 at equal intervals. At the rear end, each first rotating ball 22 is interposed between one of the transmission positioning grooves 231 and the first receiving portion 213, and the plurality of first rotating beads 22 are interposed between the transmission member 23 and the first The fixed rings 21 are distributed at equal intervals, so the transmission member 23 can rotate relative to the first fixed ring 21 through the plurality of first rotating beads 22. The transmission cam portion 232 is provided on the transmission member 23. The front end of the transmission cam portion 232 is radially recessed to form a transmission cam groove 233.

As shown in FIG. 4, the inner transmission bearing 24 is disposed inside the transmission member 23, and an outer surface of the inner transmission bearing 24 abuts against the inner surface of the transmission member 23; the outer transmission bearing 25 is sleeved on the transmission member 23 is externally located between the plurality of transmission positioning grooves 231 and the transmission cam portion 232, and the inner surface of the outer transmission bearing 25 abuts against the outer surface of the transmission member 23.

Please refer to FIG. 2 and FIG. 4. The second transmission module 30 is disposed in the accommodation space 101 of the shaft base 10 and is connected to the first transmission module 20. The second transmission module 30 30 is provided with a second fixing ring 31 and a plurality of second rotating beads 32, wherein the second fixing ring 31 is fixedly connected to the front end of the first fixing ring 21 with a rear end, and the second fixing ring 31 is sleeved on the second fixing ring 31 Outside the transmission member 23, the second fixing ring 31 is provided with a second positioning piece 311, a plurality of second pushing beads 312, and a second receiving portion 313. The second positioning piece 311 is axially protruding from the second positioning piece 311. The front end of the fixing ring 31 is provided with a plurality of positioning holes penetrating radially and spaced apart from the second positioning piece 311; the plurality of second pushing beads 312 are respectively provided on the plurality of second positioning pieces 311 so as to be able to move radially. Of the positioning holes, and the plurality of second pushing beads 312 abut against the driving cam groove 233 of the driving cam portion 232 of the driving member 23; the second receiving portion 313 is recessed at the front end of the second fixing ring 31 And surrounds the second positioning piece 311, and when each second pushing bead 312 moves radially outward, it can extend into the second receiving portion 313 Party.

The plurality of second rotating beads 32 are disposed on the second accommodating portion 313 and are located outside the plurality of second urging beads 312. When the second urging beads 312 extend into the second accommodating portion 313, Ahead At this time, it can abut against one of the second pushing beads 312, so that the plurality of second pushing beads 312 move radially between the transmission cam groove 233 and the plurality of second rotating beads 32. Further, each second rotation The beads 32 are interposed between the plurality of second pushing beads 312 and the partition portion 12.

Please refer to FIG. 2 to FIG. 4, the input member 40 is disposed at the center of the accommodation space 101 of the shaft base 10, and is inserted into the first transmission module 20 from the rear end. The outer surface abuts against the inner surface of the transmission inner bearing 24, so that the input member 40 and the transmission member 23 can rotate relative to each other. The input member 40 includes a coupling groove 41, an input cam portion 42, a latching groove 43, A C-shaped fastener 401, a front-end bearing 402, and a rear-end bearing 403. The coupling groove 41 is recessed from the rear end of the input member 40 to connect a motor device. The input cam portion 42 is annularly convex. An input cam groove 421 is annularly and radially recessed at a middle portion of an outer peripheral edge of the input member 40, and the input cam portion 42 uses the input cam groove 421 and the plurality of first driving beads to be radially recessed. 212 abut against each other, and enable the plurality of first pushing beads 212 to move radially between the input cam portion 42 and the plurality of first rotating beads 22; the locking groove 43 is recessed in a ring shape on the outer periphery of the input member 40 The edge is near the front end; the C-shaped fastener 401 is sleeved on the clamping groove 43; the front end bearing 4 02 is sleeved on the front end of the input member 40 and abuts against the C-shaped fastener 401; the rear end bearing 403 is sleeved on the rear end of the input member 40, and the rear end bearing 403 is interposed between the input member in the radial direction Between 40 and the first fixing ring 21, the input member 40 can rotate relative to the first fixing ring 21.

Please refer to FIG. 1, FIG. 2 and FIG. 4. The output member 50 extends from the front end of the shaft base 10 and is disposed in the shaft base 10. It is located in front of the partition portion 12 and is sleeved on The front end of the input member 40 is capable of rotating relative to the input member 40 with its inner surface abutting against the outer surface of the front bearing 402. The output member 50 is provided with a plurality of output positioning grooves 51, a plurality of coupling holes 52, and An output bearing 501. The plurality of output positioning grooves 51 are recessed at the rear end of the output member 50 at equal intervals, so that each of the second rotating beads 32 is interposed between one of the output positioning grooves 51 and the second receiving portion 313. , And the plurality of second rotating beads 32 are interposed between the output member 50 and the second fixed ring 31 and are distributed at equal intervals, so the output The piece 50 can be rotated relative to the second fixing ring 31 through the plurality of second rotating beads 32; as shown in FIG. 1, the plurality of coupling holes 52 are recessed at the front end of the output piece 50 to make the output The output member 50 can be combined with an output shaft; the output bearing 501 is sleeved on the front end of the output member 50 and is interposed between the output member 50 and the shaft base 10 in the radial direction, so that the output member 50 can be opposite to the shaft The base 10 rotates.

As shown in FIGS. 1 and 4, the cover 60 is fixed to the front end of the shaft base 10 and is located outside the front end of the output member 50.

Please refer to FIG. 4 and FIG. 5, when the input member 40 is driven by the connected motor device to rotate, due to the shape of the input cam groove 421, when the input member 40 rotates, the first A push bead 212 causes each first push bead 212 to move radially outward in a sequential and intermittent manner, and pushes a plurality of first rotating beads 22 outside the plurality of first push beads 212 so as to communicate with the plurality of first A transmission member 23 combined with a rotating bead 22 rotates, and through this transmission process, the rotation speed of the transmission member 23 will be less than the rotation speed of the input member 40 driven by the motor device.

Further, as shown in FIG. 4 and FIG. 6, when the transmission member 23 rotates, due to the shape of the transmission cam groove 233 provided therein, when the transmission member 23 rotates, the second driving beads are sequentially pushed. 312, each of the second pushing beads 312 is sequentially and intermittently moved radially outward, and the plurality of second turning beads 32 outside the plurality of second pushing beads 312 are pushed, so that the second pushing beads 312 are connected with the plurality of second turning beads. 32 combined output members 50 rotate, and through this transmission process, the rotation speed of the output member 50 will be less than the rotation speed of the transmission member 23, so that the rotation speed of the output member 50 is less than the rotation speed of the input member 40, thereby achieving a deceleration effect. .

With the above technical features, the present invention uses the two-stage transmission process to utilize the plurality of first and second pushing beads 212 and 312 to intermittently move radially, and pushes the plurality of first and second turning beads 22 , 32, so that the rotation speed of the output member 50 is lower than the rotation speed of the input member 40 to achieve a deceleration effect and provide a user-required rotation speed. Preferably, the present invention can effectively improve the existing push type through a simplified structural configuration. The speed changing device is large and occupies space. It is difficult to apply the disadvantages in the field of precision machinery, so as to provide a push-type speed changing device that can be applied to precision machinery.

The above is only a preferred embodiment of the present invention, and is not a limitation on the present invention in any form. Any person with ordinary knowledge in the technical field may use the present invention without departing from the scope of the technical solution provided by the present invention. Equivalent embodiments of the partial changes or modifications made by the disclosed technical content without departing from the technical solution content of the present invention are still within the scope of the technical solution of the present invention.

Claims (4)

A push-type speed changing device includes: a shaft seat; a first transmission module, the first transmission module is disposed inside the shaft seat, and is provided with a first fixing ring, a plurality of first rotating beads, and A transmission member, wherein the first fixing ring is fixedly connected to the shaft seat, and the first fixing ring is provided with a plurality of first pushing beads capable of moving radially, and the plurality of first rotating beads can be opposed to the first The axis of the fixing ring rotates around the outside of the plurality of first driving beads, the transmission member abuts against the plurality of first rotating beads, and is provided with a plurality of transmission positioning grooves and a transmission cam portion. The transmission positioning grooves abut against the plurality of first rotation beads, respectively, so that the plurality of first rotation beads can drive the transmission member to rotate, and the transmission cam portion is annularly disposed at an end of the transmission gradually away from the plurality of transmission positioning grooves; A second transmission module is disposed inside the shaft seat and is connected to the first transmission module. The second transmission module is provided with a second fixing ring and a plurality of second rotating beads. , Where the second fixing ring sleeve On the outside of the transmission member, the second fixing ring is provided with a plurality of second pushing beads capable of moving radially, and the plurality of second pushing beads abut against the transmission cam portion of the transmission member, and the plurality of first rotations The bead can rotate around the outside of the plurality of first pushing beads relative to the axis of the first fixing ring; an input member is provided inside the shaft seat and is connected to the first transmission module, And connected with a motor device, the input member is provided with an input cam portion in a ring shape, and the input cam portion abuts against the plurality of first pushing beads; and an output member is provided inside the shaft seat, and Connected to the second transmission module, the output member is provided with a plurality of output positioning grooves, and the plurality of output positioning grooves abut against the plurality of second rotating beads, respectively, so that the plurality of second rotating beads can drive the The transmission member rotates. The push-type speed change device according to claim 1, wherein the push-type speed change device includes a cover body, the cover body and the shaft seat are fixed to an end far from the first fixing ring, and the cover body is located in a radial direction. The outside of the output. The push-type transmission device according to claim 1 or 2, wherein the first fixing ring is provided with a first positioning piece, the first positioning piece is annularly protruded from the first fixing ring in the axial direction, and the first A plurality of positioning holes are provided through the positioning piece in the radial direction, so that each of the first pushing beads can be located in one of the positioning holes of the first positioning piece in a radial direction. The second fixing ring is provided with a second positioning piece. A second positioning piece is annularly protruded from the second fixing ring in the axial direction, and a plurality of positioning holes are provided through the second positioning piece in the radial direction, so that each of the second pushing beads can be located radially on the second fixing ring. One of the positioning holes in the positioning piece. The push-type transmission according to claim 3, wherein the first fixing ring is provided with a first receiving portion, the first receiving portion is annularly recessed in the first fixing ring in the axial direction, and each first The rotating bead is interposed between one of the transmission positioning grooves and the first accommodating portion; the second fixing ring is provided with a second accommodating portion, and the second accommodating portion is annularly recessed in the second axial direction. The fixing ring, and each of the second rotating beads is interposed between one of the output positioning grooves and the second receiving portion.