Continuously variable transmission for electric automobile

Abstract

The invention relates to the technical field of vehicle gearboxes, the vehicle gearbox comprises a continuously variable transmission body, an input shaft is arranged on one side of the continuously variable transmission body, an output shaft is arranged on the side, adjacent to the input shaft, of the continuously variable transmission body, and a heat dissipation mechanism is arranged on the side, away from the input shaft, of the continuously variable transmission body. The continuously variable transmission assembling device has the beneficial effects that after the continuously variable transmission is assembled, the continuously variable transmission can be conveniently hoisted and transferred by arranging the hoisting mechanism, the moving convenience of the continuously variable transmission is improved, meanwhile, a limiting assembly in the hoisting mechanism can store and fix a used hoisting ring, and the situation that the hoisting ring occupies space and influences later installation of the continuously variable transmission is avoided; by arranging the heat dissipation mechanism, rapid air blowing heat dissipation can be conducted on the interior of the continuously variable transmission, meanwhile, the heat dissipation mechanism can blow cold air into the interior of the continuously variable transmission through the refrigeration groove, the flow guide groove, the semiconductor refrigeration plate and the air blowing assembly to accelerate cooling of the interior of the continuously variable transmission, and heat dissipation is more efficient.

Description

Technical Field

[0001] This invention relates to the field of transmission technology, and more specifically, to a continuously variable transmission (CVT) for electric vehicles. Background Technology

[0002] A continuously variable transmission (CVT) is a type of automatic transmission that achieves stepless speed regulation by continuously changing the gear ratio through two sets of pulleys and a steel drive belt (or chain), replacing the traditional gear structure. Its core consists of a drive pulley set, a driven pulley set, a metal belt, and a hydraulic control system. The transmission radius is changed by hydraulically adjusting the spacing of the conical discs, improving fuel economy and eliminating shift shock. Invented by Dutch engineers, this technology is divided into three types: mechanical, hydraulic, and electric, and is suitable for hydraulic torque converter-type starting devices.

[0003] The existing continuously variable transmissions (CVTs) are heavy and difficult to move after assembly. Furthermore, the existing CVTs have poor heat dissipation, making the internal gears prone to overheating and damage.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Summary of the Invention

[0005] In view of the problems in the related technologies, the present invention proposes a continuously variable transmission for electric vehicles to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by the present invention is as follows: A continuously variable transmission (CVT) for electric vehicles includes a CVT body, an input shaft on one side of the CVT body, an output shaft on the side of the CVT body adjacent to the input shaft, a heat dissipation mechanism on the side of the CVT body away from the input shaft, and a lifting mechanism at the top of the CVT body. The lifting mechanism includes symmetrically arranged storage slots at the top of the CVT body, a connecting shaft in the storage slot, a connecting block sleeved on the outer wall of the connecting shaft, the top of the connecting block extending outside the storage slot and connecting to a lifting ring, the lifting ring matching the storage slot, and a limiting component on the outer wall of the lifting ring.

[0007] Preferably, the heat dissipation mechanism includes a fan box located on the side of the continuously variable transmission (CVT) body away from the input shaft. A cooling slot is formed in the fan box, and a guide channel is formed in the fan box and located on one side of the cooling slot, the guide channel being connected to the cooling slot. Symmetrically arranged semiconductor cooling plates are provided on the side of the fan box away from the CVT body, the cooling end of the semiconductor cooling plates being located in the cooling slot. An air inlet is formed on the side of the fan box adjacent to the semiconductor cooling plates, the air inlet containing a matching dustproof mesh. A plurality of evenly distributed mounting holes are formed on the side of the fan box away from the semiconductor cooling plates, each mounting hole being connected to the CVT body and the guide channel. Each of the evenly distributed mounting holes contains a blower assembly. A heat dissipation vent is formed on the side of the CVT body away from the output shaft, the heat dissipation vent containing a protective mesh.

[0008] Preferably, the cooling tank is provided with a plurality of uniformly distributed baffles, and the heating end of the semiconductor cooling plate is provided with a plurality of uniformly distributed heat sinks.

[0009] Preferably, one side of the bellows is provided with a brush that matches the dustproof net and is connected to the bellows via a drive assembly.

[0010] Preferably, the drive assembly includes a lead screw on one side of the air box, the lead screw being connected to the air box via a mounting base, a movable block being fitted on the outer wall of the lead screw, one side of the movable block being connected to the brush via an elastic telescopic rod, the top end of the lead screw extending to the outside of the mounting base and connected to the drive end of a servo motor, a controller being provided on one side of the air box, and a flow rate sensor being provided in the air box.

[0011] Preferably, the lead screw is connected to the mounting base via a bearing, the movable block has a threaded hole that matches the lead screw, one side of the lead screw has a guide rod that passes through the movable block and is connected to the mounting base, and the movable block has a guide hole that matches the guide rod.

[0012] Preferably, the blower assembly includes a drive shaft provided in each of the plurality of evenly distributed mounting holes. The drive shaft is connected to the air box via a connecting bracket. One end of the drive shaft is provided with a fan blade, and the other end of the drive shaft extends into the guide groove and is connected to a helical gear. A horizontally arranged mounting shaft is provided in the guide groove. A plurality of evenly distributed helical gears are fitted on the outer wall of the mounting shaft and match the helical gear. One end of the mounting shaft extends out of the air box and is connected to the drive end of the cooling motor.

[0013] Preferably, the limiting component includes symmetrically arranged sliding grooves on the outer wall of the lifting ring, with matching sliding columns in the sliding grooves. One end of the sliding column is connected to the lifting ring by a spring, and the other end of the sliding column extends outside the lifting ring. The inner wall of the storage groove is provided with a limiting groove that matches the sliding column.

[0014] Preferably, the inner wall of the slide groove is provided with symmetrically arranged travel grooves on both sides, and the slide column is provided with travel blocks that match the travel grooves.

[0015] Preferably, the end of the sliding column located outside the lifting ring has a hemispherical structure.

[0016] The beneficial effects of this invention are as follows: by setting up a hoisting mechanism, it is easy to hoist and transport the continuously variable transmission (CVT) after it is assembled, thus improving its mobility. At the same time, the limiting component in the hoisting mechanism can store and fix the lifting ring after use, preventing the lifting ring from occupying space and affecting the later installation of the CVT. By setting up a heat dissipation mechanism, the CVT's interior can be quickly cooled by blowing air. The heat dissipation mechanism can also blow cold air into the CVT's interior through a cooling tank, a guide tank, a semiconductor cooling plate, and a blowing component to accelerate the cooling of the CVT's interior, making the heat dissipation more efficient. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of a continuously variable transmission (CVT) for an electric vehicle according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a continuously variable transmission (CVT) for an electric vehicle from another angle according to an embodiment of the present invention; Figure 3 yes Figure 1 A magnified view of a portion of point A in the middle; Figure 4 This is a cross-sectional view of a lifting ring in a continuously variable transmission (CVT) for an electric vehicle according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the air box in a continuously variable transmission (CVT) for an electric vehicle according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the air box in a continuously variable transmission for electric vehicles from another angle, according to an embodiment of the present invention. Figure 7This is a schematic diagram of the internal structure of the air box in a continuously variable transmission (CVT) for an electric vehicle according to an embodiment of the present invention; Figure 8 yes Figure 6 A magnified view of a portion of point B in the middle.

[0019] In the picture: 1. Continuously variable transmission (CVT) body; 2. Input shaft; 3. Output shaft; 4. Storage slot; 5. Connecting shaft; 6. Connecting block; 7. Lifting ring; 8. Air box; 9. Cooling tank; 10. Guide channel; 11. Semiconductor cooling plate; 12. Air inlet; 13. Dustproof net; 14. Mounting hole; 15. Heat dissipation vent; 16. Protective net; 17. Baffle plate; 18. Heat sink; 19. Brush; 20. Lead screw; 21. Mounting base; 22. Movable block; 23. Elastic telescopic rod; 24. Servo motor; 25. Controller; 26. Flow sensor; 27. Guide rod; 28. Drive shaft; 29. ​​Connecting frame; 30. Fan blade; 31. Helical gear one; 32. Mounting shaft; 33. Helical gear two; 34. Cooling motor; 35. Slide groove; 36. Slide column; 37. Spring; 38. Limit groove; 39. Stroke groove; 40. Stroke block. Detailed Implementation

[0020] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0021] According to an embodiment of the present invention, a continuously variable transmission (CVT) for electric vehicles is provided.

[0022] Example 1 like Figure 1-8As shown, a continuously variable transmission (CVT) for electric vehicles according to an embodiment of the present invention includes a CVT body 1. An input shaft 2 is provided on one side of the CVT body 1, and an output shaft 3 is provided on the side of the CVT body 1 adjacent to the input shaft 2. A heat dissipation mechanism is provided on the side of the CVT body 1 away from the input shaft 2. A lifting mechanism is provided at the top of the CVT body 1. The lifting mechanism includes symmetrically arranged storage grooves 4 opened at the top of the CVT body 1. A connecting shaft 5 is provided in the storage groove 4. A connecting block 6 is sleeved on the outer wall of the connecting shaft 5. The top of the connecting block 6 extends outside the storage groove 4 and connects to a lifting ring 7. The lifting ring 7 matches the storage groove 4, and a limiting component is provided on the outer wall of the lifting ring 7. The limiting component includes symmetrically arranged sliding grooves 35 on the outer wall of the lifting ring 7, with matching sliding columns 36 in the sliding grooves 35. One end of the sliding column 36 is connected to the lifting ring 7 via a spring 37, and the other end of the sliding column 36 extends outside the lifting ring 7. The inner wall of the receiving groove 4 has a limiting groove 38 that matches the sliding column 36. Symmetrically arranged travel grooves 39 are formed on both sides of the inner wall of the sliding groove 35, and travel blocks 40 that match the travel grooves 39 are provided on the sliding column 36. The end of the sliding column 36 located outside the lifting ring 7 has a hemispherical structure.

[0023] After the continuously variable transmission (CVT) body is assembled, it needs to be moved and transported. At this time, the lifting ring 7 can be tied with an external lifting rope, and then the CVT body can be lifted and transported. After the transport is completed, the lifting ring 7 can be rotated into the storage slot 4. When the lifting ring 7 is rotated into the storage slot 4, the sliding column 36 is squeezed by the spring 37, and its hemispherical end will be locked into the limiting slot 38 to limit the lifting ring 7. By setting up a lifting mechanism, it is easy to lift and transport the CVT after it is assembled, which improves its mobility. At the same time, the limiting component in the lifting mechanism can store and fix the lifting ring after use, so as to avoid the lifting ring occupying space and affecting the later installation of the CVT.

[0024] Example 2 like Figure 1-8As shown, the heat dissipation mechanism includes a fan box 8 located on the side of the continuously variable transmission (CVT) body 1 away from the input shaft 2. A cooling groove 9 is formed in the fan box 8. A guide groove 10 is formed in the fan box 8 and located on one side of the cooling groove 9, and the guide groove 10 is connected to the cooling groove 9. Symmetrically arranged semiconductor cooling plates 11 are provided on the side of the fan box 8 away from the CVT body 1, with the cooling end of the semiconductor cooling plate 11 located in the cooling groove 9. An air inlet 12 is formed on the side of the fan box 8 adjacent to the semiconductor cooling plate 11, and a matching dustproof mesh 13 is provided in the air inlet 12. Several evenly distributed mounting holes 14 are formed on the side of the fan box 8 away from the semiconductor cooling plate 11, and each mounting hole 14 is connected to the CVT body 1 and the guide groove 10. Each of the evenly distributed mounting holes 14 is provided with a blowing assembly. A heat dissipation vent 15 is formed on the side of the CVT body 1 away from the output shaft 3, and a protective mesh 16 is provided in the heat dissipation vent 15. The cooling tank 9 is provided with several evenly distributed baffles 17, and the heating end of the semiconductor cooling plate 11 is provided with several evenly distributed heat sinks 18. A brush 19 matching the dustproof net 13 is connected to one side of the air box 8, and the brush 19 is connected to the air box 8 via a drive assembly. The drive assembly includes a lead screw 20 on one side of the air box 8, which is connected to the air box 8 via a mounting base 21. A movable block 22 is fitted on the outer wall of the lead screw 20, and one side of the movable block 22 is connected to the brush 19 via an elastic telescopic rod 23. The top end of the lead screw 20 extends outside the mounting base 21 and is connected to the drive end of a servo motor 24. A controller 25 is provided on one side of the air box 8, and a flow rate sensor 26 is provided inside the air box 8. The lead screw 20 is connected to the mounting base 21 via a bearing. The movable block 22 has a threaded hole matching the lead screw 20. A guide rod 27, penetrating the movable block 22 and connected to the mounting base 21, is provided on one side of the lead screw 20. A guide hole matching the guide rod 27 is provided on the movable block 22. The blower assembly includes drive shafts 28, each located in one of the several evenly distributed mounting holes 14. The drive shafts 28 are connected to the air box 8 via a connecting bracket 29. One end of the drive shaft 28 has a fan blade 30, and the other end extends into the guide groove 10 and connects to a helical gear 31. A horizontally arranged mounting shaft 32 is provided in the guide groove 10. Several evenly distributed helical gears 33, matching the helical gear 31, are fitted onto the outer wall of the mounting shaft 32. One end of the mounting shaft 32 extends outside the air box 8 and connects to the drive end of the cooling motor 34.

[0025] During heat dissipation, the cooling motor 34 is started, driving the mounting shaft 32 to rotate. The mounting shaft 32 drives multiple sets of helical gears 33 to rotate, which in turn drive multiple sets of helical gears 31 to rotate. The helical gears 31 drive the drive shaft 28 to rotate, which in turn drives the fan blades 30 to rotate, blowing air into the continuously variable transmission (CVT) body for heat dissipation. At this time, the external air enters the cooling tank 9 after being filtered by the dust filter 13 and is cooled by the semiconductor cooling plate 11. The baffle plate 17 reduces the air flow speed, making the air cooling more complete. The cooled air then flows into the guide channel 10 and then enters the CVT body 1 through the fan blades 30. This allows for rapid heat dissipation. When excessive dust on the dustproof mesh 13 causes blockage of the mesh holes, the flow rate sensor 26 detects an abnormal gas flow rate. The controller 25 then activates the servo motor 24, which drives the lead screw 20 to rotate. The lead screw 20 then moves the movable block 22, which, through the elastic telescopic rod 23, moves the brush 19 to scrape the surface of the dustproof mesh 13. By setting up a heat dissipation mechanism, rapid airflow can be blown into the continuously variable transmission (CVT) for heat dissipation. At the same time, the heat dissipation mechanism, through the cooling tank, the guide tank, the semiconductor cooling plate, and the air blowing assembly, can blow cold air into the CVT to accelerate the cooling of the CVT, making heat dissipation more efficient.

[0026] In summary, by utilizing the above-mentioned technical solution of the present invention, the lifting mechanism facilitates the hoisting and transportation of the continuously variable transmission (CVT) after assembly, improving its mobility. Simultaneously, the limiting components in the lifting mechanism can store and fix the lifting rings after use, preventing them from occupying space and affecting the later installation of the CVT. Furthermore, the cooling mechanism allows for rapid airflow cooling of the CVT's interior. Through the cooling tank, guide channel, semiconductor cooling plate, and airflow assembly, the cooling mechanism can blow cold air into the CVT to accelerate internal cooling, making heat dissipation more efficient.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A continuously variable transmission (CVT) for electric vehicles, characterized in that, The continuously variable transmission (CVT) includes a continuously variable transmission body (1), an input shaft (2) on one side of the CVT body (1), an output shaft (3) on the side of the CVT body (1) adjacent to the input shaft (2), a heat dissipation mechanism on the side of the CVT body (1) away from the input shaft (2), and a hoisting mechanism at the top of the CVT body (1). The hoisting mechanism includes symmetrically arranged storage slots (4) at the top of the CVT body (1), a connecting shaft (5) in the storage slot (4), a connecting block (6) sleeved on the outer wall of the connecting shaft (5), the top of the connecting block (6) extending to the outside of the storage slot (4) and connected to a lifting ring (7), the lifting ring (7) matching the storage slot (4), and a limiting component on the outer wall of the lifting ring (7).

2. The continuously variable transmission (CVT) for electric vehicles according to claim 1, characterized in that, The heat dissipation mechanism includes a fan box (8) located on the side of the continuously variable transmission (CVT) body (1) away from the input shaft (2). A cooling trough (9) is formed in the fan box (8). A guide channel (10) is formed in the fan box (8) and located on one side of the cooling trough (9). The guide channel (10) is connected to the cooling trough (9). Symmetrically arranged semiconductor cooling plates (11) are provided on the side of the fan box (8) away from the CVT body (1). The cooling end of the semiconductor cooling plate (11) is located in the cooling trough (9). The fan box (8) is adjacent to the semiconductor cooling plate (11). An air inlet (12) is provided on one side of the air inlet (12), and a matching dustproof net (13) is provided in the air inlet (12). A number of evenly distributed mounting holes (14) are provided on the side of the air box (8) away from the semiconductor cooling plate (11). The mounting holes (14) are all connected to the continuously variable transmission body (1) and the guide groove (10). A blower assembly is provided in each of the several evenly distributed mounting holes (14). A heat dissipation vent (15) is provided on the side of the continuously variable transmission body (1) away from the output shaft (3), and a protective net (16) is provided in the heat dissipation vent (15).

3. A continuously variable transmission (CVT) for an electric vehicle according to claim 2, characterized in that, The cooling tank (9) is provided with several baffles (17) evenly distributed, and the heating end of the semiconductor cooling plate (11) is provided with several heat sinks (18) evenly distributed.

4. A continuously variable transmission (CVT) for an electric vehicle according to claim 2, characterized in that, The bellows (8) is provided with a brush (19) on one side that matches the dustproof net (13), and the brush (19) is connected to the bellows (8) through a drive assembly.

5. A continuously variable transmission (CVT) for an electric vehicle according to claim 4, characterized in that, The drive assembly includes a lead screw (20) on one side of the air box (8), the lead screw (20) being connected to the air box (8) via a mounting base (21), a movable block (22) being fitted on the outer wall of the lead screw (20), one side of the movable block (22) being connected to the brush (19) via an elastic telescopic rod (23), the top end of the lead screw (20) extending to the outside of the mounting base (21) and being connected to the drive end of the servo motor (24), a controller (25) being provided on one side of the air box (8), and a flow rate sensor (26) being provided in the air box (8).

6. A continuously variable transmission (CVT) for an electric vehicle according to claim 5, characterized in that, The lead screw (20) is connected to the mounting base (21) via a bearing. The movable block (22) has a threaded hole that matches the lead screw (20). The lead screw (20) has a guide rod (27) that passes through the movable block (22) and is connected to the mounting base (21) on one side. The movable block (22) has a guide hole that matches the guide rod (27).

7. A continuously variable transmission (CVT) for an electric vehicle according to claim 2, characterized in that, The blower assembly includes a drive shaft (28) provided in each of the several uniformly distributed mounting holes (14). The drive shaft (28) is connected to the air box (8) through a connecting bracket (29). One end of the drive shaft (28) is provided with a fan blade (30). The other end of the drive shaft (28) extends into the guide groove (10) and is connected to a helical gear (31). The guide groove (10) is provided with a horizontally arranged mounting shaft (32). The outer wall of the mounting shaft (32) is fitted with several uniformly distributed helical gears (33) that match the helical gear (31). One end of the mounting shaft (32) extends out of the air box (8) and is connected to the drive end of the cooling motor (34).

8. A continuously variable transmission (CVT) for an electric vehicle according to claim 1, characterized in that, The limiting component includes symmetrically arranged sliding grooves (35) on the outer wall of the lifting ring (7), and a matching sliding post (36) in the sliding groove (35). One end of the sliding post (36) is connected to the lifting ring (7) by a spring (37), and the other end of the sliding post (36) extends to the outside of the lifting ring (7). The inner wall of the storage groove (4) is provided with a limiting groove (38) that matches the sliding post (36).

9. A continuously variable transmission (CVT) for an electric vehicle according to claim 8, characterized in that, The inner wall of the slide (35) is provided with symmetrically arranged travel grooves (39), and the slide column (36) is provided with a travel block (40) that matches the travel groove (39).

10. A continuously variable transmission (CVT) for an electric vehicle according to claim 8, characterized in that, The end of the sliding column (36) located outside the lifting ring (7) is a hemispherical structure.

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