A circular transmission non-empty volume unidirectional intermittent motion mechanism

Abstract

The present invention relates to a circular drive unidirectional intermittent motion mechanism without dead space, including a support device, a transmission device arranged on the support device, and a swing device arranged between the support device and the transmission device. The support device plays a role in supporting the transmission device and the swing device, and the swing device can eliminate the dead space when the transmission device is in use.

Description

Technical Field

[0001] The present invention relates to a circular transmission unidirectional intermittent motion mechanism without clearance. Background Art

[0002] When the ratchet pawl of the existing ratchet mechanism is inserted into the tooth groove of the ratchet, due to a certain amount of clearance, an impulse is generated between the pawl and the tooth groove, which may cause noise or damage to the ratchet.

[0003] The existing document CN201621243193.4, an intermittent transmission device, includes a base, a flange base, a main transmission shaft, a cylinder, an intermittent swing rod mechanism, a ratchet mechanism and a positioning swing rod mechanism. The intermittent swing rod mechanism includes an intermittent swing rod, a positioning shaft and a roller. The intermittent swing rod is sleeved on the main transmission shaft, the positioning shaft is installed on the intermittent swing rod, the roller is fixedly sleeved on the positioning shaft, the piston rod of the cylinder is fixed on the intermittent swing rod. The ratchet mechanism includes a ratchet and a pawl. The pawl is sleeved on the positioning shaft, the ratchet is sleeved on the main transmission shaft, and a positioning groove is provided on the ratchet. The positioning swing rod mechanism includes a positioning swing rod, a support shaft, a support shaft installation mechanism and a tension spring. The support shaft is installed through the support shaft installation mechanism. The positioning swing rod is an L-shaped plate structure, and the bent part of the positioning swing rod is movably sleeved on the support shaft. The roller cooperates with the positioning swing rod. A positioning pin is provided on the positioning plate, and the tension spring is installed between the positioning swing rod and the support shaft installation mechanism. This device has a simple and compact structure and requires a small installation space.

[0004] The existing document CN201420753203.3, a ratchet intermittent transmission device, includes a frame and a ratchet. The ratchet is rotatably connected to the frame. It also includes a control rod and a cam hinged to the frame. A driving ring is provided along the circumference on one end face of the cam. The middle part of the control rod is hinged to the frame. One end of the control rod abuts against the cam. Two rods are provided at the other end of the control rod. The included angle between the two rods is greater than the angle corresponding to one ratchet tooth on the ratchet. Among them, a friction plate that can contact the driving ring is provided on one rod, and a brake pawl is provided on the other rod. In the present invention, the friction plate is used to drive the ratchet to move, and the brake pawl is used to brake the ratchet. The friction plate and the driving ring on the ratchet are in surface contact, and compared with the point contact of the pawl, the wear is smaller; the brake pawl does not need to rotate back and forth on the ratchet, and the wear of the brake pawl is also smaller. Therefore, it is not necessary to frequently replace the friction plate and the brake pawl, making the overall have a longer working time.

[0005] Both of the above two solutions have the problem of clearance in the operation of the ratchet mechanism. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a unidirectional intermittent motion mechanism that eliminates clearance.

[0007] The present invention adopts the following technical solutions:

[0008] The present invention includes a support device, a transmission device disposed on the support device, and a swing device disposed between the support device and the transmission device.

[0009] The support device of the present invention includes a support wheel, a plurality of cylinders evenly distributed on the outer edge of the support wheel and fixedly connected to the side plane of the support wheel, a convex frustum fixedly disposed at the middle position of the support wheel and fixedly connected to the side plane of the support wheel, a through hole A disposed at the middle position of the support wheel, and a transmission shaft sleeved inside the through hole A. The transmission device is disposed on the transmission shaft. The transmission shaft penetrates to both sides of the through hole A. The cylinders are respectively adapted to the transmission device and the swing device. The swing device is located between the support wheel and the transmission device.

[0010] The transmission device of the present invention includes a handle rod, a ring sleeve fixedly disposed at one end of the handle rod and sleeved on the upper end of the convex frustum, a support rod A and a support rod B fixedly disposed on the handle rod perpendicular to the side surface of the support wheel, a limit block A fixedly disposed at the end of the support rod A away from the handle rod and parallel to the handle rod, and a limit block B fixedly disposed at the end of the support rod B away from the handle rod and parallel to the handle rod. A clamp A is clamped on the upper end of the convex frustum. The ring sleeve is located between the lower end of the convex frustum and the clamp A. The support rod A and the support rod B are arranged in parallel. The limit block A and the limit block B are respectively located on the relatively far sides of the support rod A and the support rod B. The swing device is located between the support wheel and the handle rod. The swing device is adapted to the limit block A and the limit block B. The support rod A and the support rod B are located on both sides of the movement track of the cylinder.

[0011] The swing device of the present invention includes a swing arm A disposed between the support wheel and the support rod A and rotatably connected to the end of the support rod A away from the handle rod, an L-shaped rotating plate A with one end fixedly connected to the circumferential surface of the swing arm A and the other end contacting the upper side surface of the limit block A, a swing rod A with one end fixedly connected to the circumferential surface of the swing arm A on the side away from the L-shaped rotating plate A, a spring A with one end fixedly connected to the handle rod at a position on the left side of the support rod A, a swing arm B disposed between the support wheel and the support rod B and rotatably connected to the end of the support rod B away from the handle rod, an L-shaped rotating plate B with one end fixedly connected to the circumferential surface of the swing arm B and the other end contacting the upper side surface of the limit block B, a swing rod B with one end fixedly connected to the circumferential surface of the swing arm B on the side away from the L-shaped rotating plate B, and a spring B with one end fixedly connected to the handle rod at a position on the right side of the support rod B;

[0012] One end of the support rod A away from the handle rod is provided with a through hole B. A rotating column A is sleeved in the through hole B. The rotating column A penetrates through the through hole B. One end of the rotating column A is fixedly connected to the end face of the swing arm A, and the other end is clamped with a clamp B. One end of the support rod B away from the handle rod is provided with a through hole C. A rotating column B is sleeved in the through hole C. The rotating column B penetrates through the through hole C. One end of the rotating column B is fixedly connected to the end face of the swing arm B, and the other end is clamped with a clamp C;

[0013] The other end of the spring A is fixedly connected to one end of the L-shaped rotating plate A away from the swing arm A. The other end of the spring B is fixedly connected to one end of the L-shaped rotating plate B away from the swing arm B. The other ends of the swing rod A and the swing rod B are both located between the support rod A and the support rod B. The top surface of the cylinder is higher than the bottom surface of the swing rod A and lower than the bottom surface of the handle rod.

[0014] In the present invention, the end face of the swing rod A located between the support rod A and the support rod B is a circular surface, and its center is located on the axis of the rotating column A. The end face of the swing rod B located between the support rod A and the support rod B is a circular surface, and its center is located on the axis of the rotating column B.

[0015] A fixed key is arranged between the transmission shaft and the through hole A. Pin holes adapted to the fixed key are arranged on the side wall of the transmission shaft and the side wall of the through hole A.

[0016] In the present invention, a plurality of support arms are uniformly and fixedly arranged on the side plane of the support wheel. The cylinder corresponds to the support arms one by one and is fixedly arranged at one end of the support arm away from the through hole A.

[0017] The positive effects of the present invention are as follows:

[0018] 1. The support device plays a supporting role for the transmission device and the swing device, and the swing device can eliminate the slack when the transmission device is in use.

[0019] 2. The transmission shaft can transmit the torque of the swing device, and the convex circular table plays a supporting role for the transmission shaft.

[0020] 3. The handle rod can be rotated, and the torque is transmitted to the support wheel through the swing arm A and the swing arm B, and then transmitted to the transmission shaft through the support wheel. The support rod A and the support rod B play a supporting role for the swing device.

[0021] 4. When the handle rod is rotated and the cylinder moves between the swing rod A and the swing rod B, the cylinder pushes open the swing rod A and the swing rod B. After the cylinder passes through the swing rod A and the swing rod B, the swing rod A and the swing rod B are reset respectively under the action of the spring A, the spring B, the limit block A and the limit block B.

[0022] 5. The other ends of the swing rod A and the swing rod B are close to each other, which can make the cylinder play a more stable limiting effect when moving in the opposite direction.

[0023] 6. The fixed key and the pin hole can fixedly connect the transmission shaft and the ring sleeve.

[0024] 7. The setting of the support arm can increase the application range of this mechanism. Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram of the present invention;

[0026] Figure 2 It is a front view of the support wheel of the present invention;

[0027] Figure 3 It is a schematic structural diagram of the transmission device of the present invention;

[0028] Figure 4 It is a schematic diagram of the positions of the L-shaped rotating plate A and the L-shaped rotating plate B of the present invention;

[0029] Figure 5 It is a schematic diagram of the position of the fixed key of the present invention;

[0030] Figure 6 It is a schematic assembly diagram of the transmission shaft and the support wheel of the present invention;

[0031] Figure 7 It is a schematic diagram of the positions of the through hole B and the through hole C of the present invention;

[0032] Figure 8 It is a schematic diagram of the position of the support arm in Embodiment 3 of the present invention.

[0033] In the drawings: 1. Support wheel; 2. Cylinder; 3. Convex circular platform; 4. Through hole A; 6. Transmission shaft; 7. Handle rod; 8. Ring sleeve; 9. Support rod A; 10. Support rod B; 11. Limit block A; 12. Limit block B; 13. Swing arm A; 14. L-shaped rotating plate A; 15. Swing rod A; 16. Spring A; 17. Swing arm B; 18. L-shaped rotating plate B; 19. Spring B; 20. Swing rod B; 21. Fixed key; 23. Support arm; 24. Clamp A; 25. Through hole B; 26. Rotating column A; 27. Clamp B; 28. Through hole C; 29. Rotating column B; 30. Clamp C. Detailed Description of the Invention

[0034] Embodiment 1

[0035] As shown in the attached Figure 1As shown in FIGS. 1-8, the present invention includes a support device, a transmission device disposed on the support device, and a swing device disposed between the support device and the transmission device. The support device supports the transmission device and the swing device, and the swing device can eliminate the slack when the transmission device is in use.

[0036] The support device includes a support wheel 1, a plurality of cylinders 2 evenly distributed along the outer edge of the support wheel 1 and fixedly connected to the side plane of the support wheel 1, a convex frustum 3 fixedly disposed at the middle position of the support wheel 1 and fixedly connected to the side plane of the support wheel 1, a through hole A4 disposed at the middle position of the support wheel 1, and a transmission shaft 6 sleeved inside the through hole A4. The transmission device is disposed on the transmission shaft 6. The transmission shaft 6 penetrates to both sides of the through hole A4. The cylinders 2 are respectively adapted to the transmission device and the swing device. The swing device is located between the support wheel 1 and the transmission device. The transmission shaft 6 can transmit the torque of the swing device, and the convex frustum 3 supports the transmission shaft 6.

[0037] The transmission device includes a handle rod 7, a ring sleeve 8 fixedly disposed at one end of the handle rod 7 and sleeved on the upper end of the convex frustum 3, a support rod A9 and a support rod B10 fixedly disposed on the handle rod 7 perpendicular to the side surface of the support wheel 1, a limit block A11 fixedly disposed at one end of the support rod A9 away from the handle rod 7 and parallel to the handle rod 7, and a limit block B12 fixedly disposed at one end of the support rod B10 away from the handle rod 7 and parallel to the handle rod 7. A clamp A24 is clamped on the upper end of the convex frustum 3. The ring sleeve 8 is located between the lower end of the convex frustum 3 and the clamp A24. The support rod A9 and the support rod B10 are arranged in parallel. The limit block A11 and the limit block B12 are respectively located on the relatively far sides of the support rod A9 and the support rod B10. The swing device is located between the support wheel 1 and the handle rod 7. The swing device is adapted to the limit block A11 and the limit block B12. The support rod A9 and the support rod B10 are located on both sides of the movement track of the cylinder 2. The handle rod 7 can be rotated to transmit the torque to the transmission shaft 6 through the ring sleeve 8. The support rod A9 and the support rod B10 support the swing device.

[0038] The swing device includes a swing arm A13 disposed between the support wheel 1 and the support rod A9 and rotatably connected to one end of the support rod A9 away from the handle rod 7, an L-shaped rotating plate A14 with one end fixedly connected to the circumferential surface of the swing arm A13 and the other end in contact with the upper side surface of the limit block A11, a swing rod A15 with one end fixedly connected to the circumferential surface of the swing arm A13 on the side away from the L-shaped rotating plate A14, a spring A16 with one end fixedly connected to the handle rod 7 at a position on the left side of the support rod A9, a swing arm B17 disposed between the support wheel 1 and the support rod B10 and rotatably connected to one end of the support rod B10 away from the handle rod 7, an L-shaped rotating plate B18 with one end fixedly connected to the circumferential surface of the swing arm B17 and the other end in contact with the upper side surface of the limit block B12, a swing rod B20 with one end fixedly connected to the circumferential surface of the swing arm B17 on the side away from the L-shaped rotating plate B18, and a spring B19 with one end fixedly connected to the handle rod 7 at a position on the right side of the support rod B10; a through hole B25 is provided at one end of the support rod A9 away from the handle rod 7, a rotating column A26 is sleeved in the through hole B25, the rotating column A26 penetrates through the through hole B25, one end of the rotating column A26 is fixedly connected to the end surface of the swing arm A13, and a clamp B27 is clamped at the other end; a through hole C28 is provided at one end of the support rod B10 away from the handle rod 7, a rotating column B29 is sleeved in the through hole C28, the rotating column B29 penetrates through the through hole C28, one end of the rotating column B29 is fixedly connected to the end surface of the swing arm B17, and a clamp C30 is clamped at the other end; the other end of the spring A16 is fixedly connected to one end of the L-shaped rotating plate A14 away from the swing arm A13, the other end of the spring B19 is fixedly connected to one end of the L-shaped rotating plate B18 away from the swing arm B17, the other ends of the swing rod A15 and the swing rod B20 are both located between the support rod A9 and the support rod B10, and the top surface of the cylinder 2 is higher than the bottom surface of the swing rod A15 and lower than the bottom surface of the handle rod 7. When the handle rod 7 is rotated and the cylinder 2 moves between the swing rod A15 and the swing rod B20, the cylinder 2 pushes away the swing rod A15 and the swing rod B20. After the cylinder 2 passes through the swing rod A15 and the swing rod B20, the swing rod A15 and the swing rod B20 are reset under the action of the spring A16, the spring B19, the limit block A11, and the limit block B12 respectively.

[0039] The end surface of the swing rod A15 located between the support rod A9 and the support rod B10 is a circular surface, and its center is located on the axis of the rotating column A26. The end surface of the swing rod B20 located between the support rod A9 and the support rod B10 is a circular surface, and its center is located on the axis of the rotating column B29. The other ends of the swing rod A15 and the swing rod B20 approaching each other can make the cylinder 2 play a more stable limiting effect when moving in the reverse direction.

[0040] Embodiment 2

[0041] Based on Embodiment 1, a fixing key 21 is arranged between the transmission shaft 6 and the ring sleeve 8, and pin holes adapted to the fixing key 21 are arranged on the transmission shaft 6 and the ring sleeve 8. The fixing key 21 and the pin holes can fixedly connect the transmission shaft 6 and the ring sleeve 8.

[0042] Embodiment 3

[0043] Based on Embodiment 2, a plurality of support arms 23 are uniformly and fixedly arranged on the side plane of the support wheel 1, and the cylinders 2 correspond to the support arms 23 one by one and are fixedly arranged at one end of the support arms 23 far away from the through hole A4. The arrangement of the support arms 23 can increase the application range of the mechanism.

[0044] During use, when the handle rod 7 is rotated and the cylinder 2 moves between the swing rod A 15 and the swing rod B 20, the cylinder 2 pushes open the swing rod A 15 and the swing rod B 20. After the cylinder 2 passes through the swing rod A 15 and the swing rod B 20, the swing rod A 15 and the swing rod B 20 are reset respectively under the action of the spring A 16, the spring B 19, the limit block A 11 and the limit block B 12.

[0045] At present, the technical solution of this application has been pilot-tested, that is, small-scale experiments before large-scale production of the product; after the pilot test is completed, user usage research has been carried out on a small scale, and the research results show that the user satisfaction is relatively high; now preparations have been started for the formal production and industrialization of the product (including research on intellectual property risk early warning).

[0046] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent substitution on some of the technical features. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A circular transmission non-empty unidirectional intermittent motion mechanism, characterized in that: It includes a support device, a transmission device arranged on the support device, and a swing device arranged between the support device and the transmission device; The support device includes a support wheel (1), several cylinders (2) evenly distributed on the outer edge of the support wheel (1) and fixedly connected to the side plane of the support wheel (1), a convex frustum (3) fixedly arranged at the middle position of the support wheel (1) and fixedly connected to the side plane of the support wheel (1), a through hole A (4) arranged at the middle position of the support wheel (1), and a transmission shaft (6) sleeved inside the through hole A (4). The transmission device is arranged on the transmission shaft (6), and the transmission shaft (6) penetrates to both sides of the through hole A (4). The cylinders (2) are respectively adapted to the transmission device and the swing device, and the swing device is located between the support wheel (1) and the transmission device; The transmission device includes a handle rod (7), a ring sleeve (8) fixedly arranged at one end of the handle rod (7) and sleeved on the upper end of the convex frustum (3), a support rod A (9) and a support rod B (10) fixedly arranged on the handle rod (7) perpendicular to the side of the support wheel (1), a limit block A (11) fixedly arranged at the end of the support rod A (9) away from the handle rod (7) and parallel to the handle rod (7), and a limit block B (12) fixedly arranged at the end of the support rod B (10) away from the handle rod (7) and parallel to the handle rod (7). A clamp A (24) is clamped on the upper end of the convex frustum (3), and the ring sleeve (8) is located between the lower end of the convex frustum (3) and the clamp A (24). The support rod A (9) and the support rod B (10) are arranged in parallel. The limit block A (11) and the limit block B (12) are respectively located on the relatively far sides of the support rod A (9) and the support rod B (10). The swing device is located between the support wheel (1) and the handle rod (7), and the swing device is adapted to the limit block A (11) and the limit block B (12). The support rod A (9) and the support rod B (10) are located on both sides of the movement track of the cylinder (2); The swing device includes a swing arm A (13) disposed between the support wheel (1) and the support rod A (9) and rotatably connected to one end of the support rod A (9) away from the handle rod (7), an L-shaped rotating plate A (14) with one end fixedly connected to the circumferential surface of the swing arm A (13) and the other end contacting the upper side surface of the limit block A (11), a swing rod A (15) with one end fixedly connected to the circumferential surface of the swing arm A (13) on the side away from the L-shaped rotating plate A (14), a spring A (16) with one end fixedly connected to the handle rod (7) at a position on the left side of the support rod A (9), a swing arm B (17) disposed between the support wheel (1) and the support rod B (10) and rotatably connected to one end of the support rod B (10) away from the handle rod (7), an L-shaped rotating plate B (18) with one end fixedly connected to the circumferential surface of the swing arm B (17) and the other end contacting the upper side surface of the limit block B (12), a swing rod B (20) with one end fixedly connected to the circumferential surface of the swing arm B (17) on the side away from the L-shaped rotating plate B (18), and a spring B (19) with one end fixedly connected to the handle rod (7) at a position on the right side of the support rod B (10); The other end of the spring A (16) is fixedly connected to one end of the L-shaped rotating plate A (14) away from the swing arm A (13), the other end of the spring B (19) is fixedly connected to one end of the L-shaped rotating plate B (18) away from the swing arm B (17), the other ends of the swing rod A (15) and the swing rod B (20) are both located between the support rod A (9) and the support rod B (10), and the top surface of the cylinder (2) is higher than the bottom surface of the swing rod A (15) and lower than the bottom surface of the handle rod (7); A plurality of support arms (23) are uniformly and fixedly arranged on the side plane of the support wheel (1), and the cylinder (2) corresponds to the support arms (23) one by one and is fixedly arranged at one end of the support arms (23) away from the through hole A (4).

2. The circular transmission non-empty unidirectional intermittent motion mechanism according to claim 1, characterized in that: A through hole B (25) is provided at one end of the support rod A (9) away from the handle rod (7), a rotating column A (26) is sleeved in the through hole B (25), the rotating column A (26) penetrates through the through hole B (25), one end of the rotating column A (26) is fixedly connected to the end face of the swing arm A (13), and a clamp B (27) is clamped at the other end. A through hole C (28) is provided at one end of the support rod B (10) away from the handle rod (7), a rotating column B (29) is sleeved in the through hole C (28), the rotating column B (29) penetrates through the through hole C (28), one end of the rotating column B (29) is fixedly connected to the end face of the swing arm B (17), and a clamp C (30) is clamped at the other end.

3. A circular drive non-empty unidirectional intermittent motion mechanism according to claim 2, characterized in that: The end face of the swing rod A (15) between the support rod A (9) and the support rod B (10) is a circular surface, and its center is located on the axis of the rotating column A (26). The end face of the swing rod B (20) between the support rod A (9) and the support rod B (10) is a circular surface, and its center is located on the axis of the rotating column B (29).

4. A circular transmission non-empty unidirectional intermittent motion mechanism according to claim 1, characterized in that: A fixed key (21) is arranged between the transmission shaft (6) and the through hole A (4), and pin holes adapted to the fixed key (21) are arranged on the side wall of the transmission shaft (6) and the side wall of the through hole A (4).

Images