Middle speed reduction output system with torquer

Abstract

The utility model discloses a middle speed reduction output system with a torquer, which comprises a middle partition plate, a middle shaft, a motor output gear shaft, a torque sensor, a reduction gearbox side cover, a motor assembly, a clutch assembly, a gear reducer assembly, a controller, a torquer connector and a motor cover, the controller is fixed to the middle partition plate, the middle partition plate is provided with a connector positioning hole, and the torquer connector penetrates through the connector positioning hole to be communicated with the controller and the torque sensor. An output signal of the torque sensor is directly transmitted to the controller, the controller receives the signal and controls the energizing current and the like of the motor assembly, then motor power output of different grades is achieved, and appropriate assistance is provided for riding of the whole vehicle. The design of the structure allows the torque sensor to be directly connected with the center shaft, the accuracy of torque measurement and the response speed of the system are ensured, and the control efficiency of the system is improved through direct communication of the controller and the torque sensor.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a mid-mounted speed reduction output system with a torquer. Background Art

[0002] A mid-mounted motor refers to an electric assisted bicycle whose driving motor is installed in the middle of the vehicle body, i.e., the pedal position. The motor is connected to the vehicle body and to the rear wheel through a chain to transmit power. At the same time, pedals are installed on both sides of the motor. When the motor has no power supply, the rider can ride the bicycle manually by pedaling.

[0003] In the state of motor assistance, since the motor assistance power is single, it is impossible to achieve the best assisted riding effect, so this needs to be improved. Summary of the invention

[0004] The utility model aims at the defect of single power assist in the prior art and provides a new mid-mounted speed reduction output system with a torquer.

[0005] In order to solve the above technical problems, the utility model is implemented through the following technical solutions:

[0006] A mid-mounted reduction output system with a torquer, comprising a middle partition, a middle shaft, a motor output gear shaft, a torque sensor, a reduction box side cover, a motor assembly, a clutch assembly, a gear reducer assembly, a controller, a torquer connector, and a motor cover. The middle partition is provided with a reduction box cavity and a motor box cavity on both sides, respectively. The controller is fixed to the middle partition, the reduction box side cover covers the reduction box cavity, and the motor cover covers the motor box cavity. The middle shaft passes through the middle partition and the reduction box side cover, and is rotatably connected to the middle partition and the reduction box side cover, respectively. The torque sensor and the clutch assembly are sleeved on the middle shaft, and the clutch assembly is connected to the motor output gear shaft by means of the gear reducer assembly, and the motor output gear shaft is connected to the motor assembly. The middle partition is provided with a connector positioning hole, and the torquer connector passes through the connector positioning hole to connect the controller and the torque sensor.

[0007] The output signal of the torque sensor is directly transmitted to the controller. The controller receives the signal and controls the power-on current of the motor component, thereby achieving different levels of motor power output and providing appropriate assistance for the entire vehicle riding.

[0008] The design of this structure allows the torque sensor to be directly connected to the central shaft, ensuring the accuracy of torque measurement and the response speed of the system. At the same time, the direct connection between the controller and the torque sensor improves the control efficiency of the system.

[0009] Preferably, in the above-mentioned mid-mounted reduction output system with a torque generator, the clutch assembly includes a clutch sleeve, a clutch inner ring, and a clutch outer ring; the clutch sleeve is sleeved on the central shaft and connected to the central shaft by means of a spline; the torque sensor is sleeved on the clutch sleeve; an inner ratchet is provided on the clutch sleeve, the inner ratchet cooperates with the clutch inner ring; the clutch inner ring is provided with an outer ratchet, the outer ratchet cooperates with the clutch outer ring; the clutch outer ring is connected to the motor output gear shaft by means of a gear reducer assembly; the clutch inner ring is rotatably connected to the middle partition and the reduction box side cover.

[0010] The spline connection and ratchet fit design of the clutch assembly provides a reliable torque transmission mechanism, enhances the torque carrying capacity of the system, and improves the stability and precision of the system by reducing the backlash.

[0011] Preferably, in the above-mentioned mid-mounted reduction output system with a torque generator, clutch inner bearings are provided at both ends of the clutch sleeve, one of the clutch inner bearings is fixed inside the clutch inner ring, and the other clutch inner bearing is fixed inside the middle partition.

[0012] The clutch inner bearings set at both ends of the clutch sleeve improve the durability and operating efficiency of the system by providing stable support and reducing friction. At the same time, the fixing method of the bearing helps to reduce vibration and noise.

[0013] Preferably, in the above-mentioned mid-reduction output system with a torque converter, the gear reducer assembly includes a three-stage gear and a two-stage gear, the three-stage gear is connected to the clutch outer ring by means of screws, the three-stage gear is connected to the two-stage gear gear, and the two-stage gear is connected to the motor output gear shaft gear.

[0014] The multi-stage gear design of the gear reducer assembly achieves efficient torque amplification and speed reduction through precise gear meshing, thereby improving the output torque and control accuracy of the system.

[0015] Preferably, in the above-mentioned mid-speed reduction output system with a torque generator, the three-stage gear includes a three-stage spline portion, a three-stage connecting ring, and a three-stage bushing, the three-stage gear is cast as one piece, the clutch outer ring is connected to the three-stage connecting ring, and the three-stage spline portion is sleeved on the outside of the clutch outer ring.

[0016] The one-piece cast structure of the three-stage gear enhances the overall mechanical strength and durability. At the same time, the design of the three-stage spline part simplifies the assembly process, improves assembly efficiency and system reliability.

[0017] Preferably, in the above-mentioned mid-mounted reduction output system with a torque generator, the clutch assembly also includes a clutch outer bearing, and the clutch outer bearing is sleeved on the clutch inner ring and embedded in the middle partition.

[0018] The design of the clutch outer bearing provides additional support and protection for the clutch assembly, reduces friction and wear during torque transmission, and extends the service life of the system.

[0019] Preferably, in the above-mentioned mid-mounted reduction output system with a torque generator, the gear reducer assembly also includes a three-stage bearing, the three-stage bearing is sleeved on the outer side of the clutch inner ring, and the outer side of the three-stage bearing is abutted against the inner side of the three-stage bushing.

[0020] The three-stage bearing setting provides precise positioning and support for the gear reducer assembly, ensuring the stable operation of the gears and improving the reliability and durability of the system.

[0021] Preferably, in the above-described mid-mounted reduction output system with a torque generator, the three-stage bushing is provided with a three-stage limiting portion, the clutch inner ring is provided with an inner ring limiting portion, the three-stage limiting portion is abutted against the axial surface of one end of the three-stage bearing, and the inner ring limiting portion is abutted against the axial surface of the other end of the three-stage bearing.

[0022] The design of the three-stage limiter and the inner ring limiter provides precise positioning for the clutch assembly and the three-stage bearing, prevents excessive movement or misalignment, and improves the stability and safety of the system.

[0023] Preferably, in the above-mentioned mid-speed reduction output system with a torque generator, a sealing bushing is provided between the clutch outer bearing and the third-stage bearing, and the sealing bushing is sleeved on the outer side of the clutch inner ring.

[0024] The use of sealing bushings provides good sealing performance, prevents the intrusion of pollutants and moisture, protects internal parts and extends the maintenance cycle of the system.

[0025] Preferably, in the above-mentioned mid-mounted reduction output system with a torque device, the clutch inner ring is also sleeved with an inner ring oil seal, and the inner ring oil seal is embedded in the middle partition.

[0026] The inner ring oil seal makes the hollow part of the inner ring of the clutch form an independent sealed cavity. The torque sensor is installed in the sealed cavity, which effectively prevents impurities generated by the meshing of the gears inside the reduction box from entering the torque sensor and interfering with it.

[0027] Preferably, in the above-described central deceleration output system with a torquer, the middle partition is provided with a torquer limiting groove, the torque sensor is provided with a torque limiting part, and the torque limiting part cooperates with the torquer limiting groove.

[0028] The cooperation between the torque limiter slot and the torque limiter provides precise positioning and protection for the torque sensor, ensuring the accuracy of the measurement data and the long-term stability of the system.

[0029] Preferably, in the above-described mid-mounted reduction output system with a torquer, the secondary gear includes a secondary motor shaft gear, a secondary center shaft gear, and an integrated composite bearing; the secondary motor shaft gear is connected to the motor output gear shaft, the secondary center shaft gear is connected to the tertiary gear, and the integrated composite bearing is rotatably connected to the middle partition and the reduction box side cover.

[0030] The integrated composite bearing design of the secondary gear provides efficient torque transmission and stable support, while simplifying the structure, facilitating maintenance and upgrading, and improving the overall performance of the system.

[0031] The integrated composite bearing can bear radial loads and certain axial loads at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 The cross section of the utility model Figure 1 ;

[0033] Figure 2 The cross section of the utility model Figure 2 ;

[0034] Figure 3 It is a partial structural schematic diagram of the middle partition in the utility model;

[0035] Figure 4 This is a schematic diagram of the structure of the central shaft, clutch sleeve, torque sensor, and clutch inner bearing in the utility model;

[0036] Figure 5 This is a schematic diagram of the structure of the three-stage gear in the utility model;

[0037] Figure 6 It is a structural schematic diagram of the secondary gear in the utility model. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-6 The present invention is further described in detail with the following specific embodiments, but they are not intended to limit the present invention:

[0039] Example 1

[0040] A mid-mounted reduction output system with a torquer, comprising a middle partition 1, a middle shaft 2, a motor output gear shaft 3, a torque sensor 4, a reduction box side cover 5, a motor assembly 6, a clutch assembly 7, a gear reducer assembly 8, a controller 9, a torquer connector 401, and a motor cover 14. The middle partition 1 is formed with a reduction box cavity 11 and a motor box cavity 12 on both sides, respectively. The controller 9 is fixed on the middle partition 1, the reduction box side cover 5 covers the reduction box cavity 11, and the motor cover 14 covers the motor box cavity 12. The central axis 2 passes through the central partition plate 1 and the reduction box side cover 5, and the central axis 2 is rotatably connected with the central partition plate 1 and the reduction box side cover 5 respectively. The torque sensor 4 and the clutch assembly 7 are sleeved on the central axis 2. The clutch assembly 7 is connected to the motor output gear shaft 3 by means of the gear reducer assembly 8. The motor output gear shaft 3 is connected to the motor assembly 6. The central partition plate 1 is provided with a connector positioning hole 15. The torquer connector 401 passes through the connector positioning hole 15 to connect the controller 9 and the torque sensor 4.

[0041] Preferably, the clutch assembly 7 includes a clutch sleeve 71, a clutch inner ring 72, and a clutch outer ring 73. The clutch sleeve 71 is sleeved on the middle shaft 2 and connected to the middle shaft 2 by means of a spline. The torque sensor 4 is sleeved on the clutch sleeve 71. The clutch sleeve 71 is provided with an inner ratchet 711, and the inner ratchet 711 cooperates with the clutch inner ring 72. The clutch inner ring 72 is provided with an outer ratchet 721, and the outer ratchet 721 cooperates with the clutch outer ring 73. The clutch outer ring 73 is connected to the motor output gear shaft 3 by means of a gear reducer assembly 8, and the clutch inner ring 72 is rotatably connected to the middle partition 1 and the reduction box side cover 5.

[0042] Preferably, clutch inner bearings 74 are provided at both ends of the clutch sleeve 71 , one of the clutch inner bearings 74 is fixed inside the clutch inner ring 72 , and the other clutch inner bearing 74 is fixed inside the middle partition 1 .

[0043] Preferably, the gear reducer assembly 8 includes a three-stage gear 81 and a two-stage gear 82, the three-stage gear 81 is connected to the clutch outer ring 73 by means of screws, the three-stage gear 81 is gear-connected to the two-stage gear 82, and the two-stage gear 82 is gear-connected to the motor output gear shaft 3.

[0044] Preferably, the three-stage gear 81 includes a three-stage spline portion 811, a three-stage connecting ring 812, and a three-stage bushing 813. The three-stage gear 81 is cast as one piece. The clutch outer ring 73 is connected to the three-stage connecting ring 812, and the three-stage spline portion 811 is sleeved on the outside of the clutch outer ring 73.

[0045] Preferably, the clutch assembly 7 further includes a clutch outer bearing 75 , and the clutch outer bearing 75 is sleeved on the clutch inner ring 72 and embedded in the middle partition plate 1 .

[0046] Preferably, the gear reducer assembly 8 further includes a tertiary bearing 83 , which is sleeved on the outer side of the clutch inner ring 72 , and the outer side of the tertiary bearing 83 abuts against the inner side of the tertiary bushing 813 .

[0047] Preferably, the third-stage bushing 813 is provided with a third-stage limiting portion 814, and the clutch inner ring 72 is provided with an inner ring limiting portion 722, the third-stage limiting portion 814 is abutted against the axial surface of one end of the third-stage bearing 83, and the inner ring limiting portion 722 is abutted against the axial surface of the other end of the third-stage bearing 83.

[0048] Preferably, a sealing bushing 76 is provided between the clutch outer bearing 75 and the third-stage bearing 83 , and the sealing bushing 76 is sleeved on the outer side of the clutch inner ring 72 .

[0049] Preferably, the clutch inner ring 72 is also sleeved with an inner ring oil seal 77 , and the inner ring oil seal 77 is embedded in the middle partition plate 1 .

[0050] Preferably, the middle partition plate 1 is provided with a torque device limiting groove 16 , and the torque sensor 4 is provided with a torque limiting portion 41 , and the torque limiting portion 41 cooperates with the torque device limiting groove 16 .

[0051] Preferably, the secondary gear 82 includes a secondary motor shaft tooth 821, a secondary middle shaft tooth 822, and an integrated composite bearing 823. The secondary motor shaft tooth 821 is connected to the motor output gear shaft 3, the secondary middle shaft tooth 822 is connected to the tertiary gear 81, and the integrated composite bearing 823 is rotatably connected to the middle partition 1 and the reduction box side cover 5.

[0052] In conclusion, the above is only a preferred embodiment of the present invention, and all equivalent changes and modifications made within the scope of the patent application for the present invention should fall within the scope of the present invention.

Claims

1. A mid-speed reduction output system with a torque device, characterized in that: The invention comprises a middle partition (1), a middle shaft (2), a motor output gear shaft (3), a torque sensor (4), a reduction box side cover (5), a motor assembly (6), a clutch assembly (7), a gear reducer assembly (8), a controller (9), a torque device connector (401), and a motor cover (14). The middle partition (1) is formed with a reduction box cavity (11) and a motor box cavity (12) on both sides respectively. The controller (9) is fixed on the middle partition (1). The reduction box side cover (5) covers the reduction box cavity (11). The motor cover (14) covers the motor box cavity (12). The middle shaft (2) passes through The middle partition (1), the reduction box side cover (5), and the middle shaft (2) are rotatably connected to the middle partition (1) and the reduction box side cover (5), respectively; the torque sensor (4) and the clutch assembly (7) are sleeved on the middle shaft (2); the clutch assembly (7) is connected to the motor output gear shaft (3) by means of the gear reducer assembly (8); the motor output gear shaft (3) is connected to the motor assembly (6); the middle partition (1) is provided with a connector positioning hole (15); the torquer connector (401) passes through the connector positioning hole (15) to connect the controller (9) and the torque sensor (4).

2. A mid-speed reduction output system with a torque device according to claim 1, characterized in that: The clutch assembly (7) comprises a clutch sleeve (71), a clutch inner ring (72), and a clutch outer ring (73). The clutch sleeve (71) is sleeved on the middle shaft (2) and connected to the middle shaft (2) by means of a spline. The torque sensor (4) is sleeved on the clutch sleeve (71). The clutch sleeve (71) is provided with an inner ratchet (711), and the inner ratchet (711) cooperates with the clutch inner ring (72). The clutch inner ring (72) is provided with an outer ratchet (721), and the outer ratchet (721) cooperates with the clutch outer ring (73). The clutch outer ring (73) is connected to the motor output gear shaft (3) by means of a gear reducer assembly (8). The clutch inner ring (72) is rotatably connected to the middle partition plate (1) and the reduction box side cover (5).

3. A mid-speed reduction output system with a torque device according to claim 2, characterized in that: Clutch inner bearings (74) are provided at both ends of the clutch sleeve (71), one of the clutch inner bearings (74) is fixed inside the clutch inner ring (72), and the other clutch inner bearing (74) is fixed inside the middle partition (1).

4. A mid-speed reduction output system with a torque device according to claim 3, characterized in that: The gear reducer assembly (8) comprises a three-stage gear (81) and a two-stage gear (82); the three-stage gear (81) is connected to the clutch outer ring (73) by means of screws; the three-stage gear (81) is gear-connected to the two-stage gear (82); and the two-stage gear (82) is gear-connected to the motor output gear shaft (3).

5. A mid-speed reduction output system with a torque device according to claim 4, characterized in that: The three-stage gear (81) comprises a three-stage spline portion (811), a three-stage connecting ring platform (812), and a three-stage bushing (813). The three-stage gear (81) is cast as one piece. The clutch outer ring (73) is connected to the three-stage connecting ring platform (812), and the three-stage spline portion (811) is sleeved on the outside of the clutch outer ring (73).

6. A mid-speed reduction output system with a torque device according to claim 5, characterized in that: The clutch assembly (7) further comprises a clutch outer bearing (75), wherein the clutch outer bearing (75) is sleeved on the clutch inner ring (72) and embedded in the middle partition plate (1).

7. A mid-speed reduction output system with a torque device according to claim 6, characterized in that: The gear reducer assembly (8) further comprises a third-stage bearing (83), wherein the third-stage bearing (83) is sleeved on the outside of the clutch inner ring (72), and the outside of the third-stage bearing (83) abuts against the inside of the third-stage bushing (813).

8. A mid-speed reduction output system with a torque device according to claim 7, characterized in that: The third-stage bushing (813) is provided with a third-stage limiting portion (814), and the clutch inner ring (72) is provided with an inner ring limiting portion (722). The third-stage limiting portion (814) abuts against the axial surface of one end of the third-stage bearing (83), and the inner ring limiting portion (722) abuts against the axial surface of the other end of the third-stage bearing (83).

9. A mid-speed reduction output system with a torque device according to claim 8, characterized in that: A sealing bushing (76) is provided between the clutch outer bearing (75) and the third-stage bearing (83), and the sealing bushing (76) is sleeved on the outer side of the clutch inner ring (72).

10. A mid-speed reduction output system with a torque device according to claim 9, characterized in that: The clutch inner ring (72) is also sleeved with an inner ring oil seal (77), and the inner ring oil seal (77) is embedded in the middle partition plate (1).

11. A mid-speed reduction output system with a torque device according to claim 10, characterized in that: The middle partition (1) is provided with a torque limiter groove (16), and the torque sensor (4) is provided with a torque limiter portion (41), and the torque limiter portion (41) cooperates with the torque limiter groove (16).

12. A mid-speed reduction output system with a torque device according to claim 4, characterized in that: The secondary gear (82) comprises secondary motor shaft teeth (821), secondary middle shaft teeth (822), and an integrated composite bearing (823); the secondary motor shaft teeth (821) are connected to the motor output gear shaft (3); the secondary middle shaft teeth (822) are connected to the tertiary gear (81); and the integrated composite bearing (823) is rotatably connected to the middle partition plate (1) and the reduction box side cover (5).

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