Levered energy boosting motor

Abstract

This utility model discloses a lever-type energy-boosting motor, comprising: a base, an inner stator, an outer rotor, a central output shaft, a flywheel, and a lever transmission mechanism. The inner stator is fixed to the base, and the outer rotor is rotatably supported on the outside of the inner stator via bearings. A concentric protrusion is provided on the inner side of the right side plate of the outer rotor; a connecting plate is supported on an inner core fixed to the inner stator via its inner ring key; one side of the connecting plate has a slot that slides with the protrusion, and the other side is fixedly connected to the flywheel; the flywheel and the central output shaft are connected by a key to transmit torque. During operation, the outer rotor rotates, driving the connecting plate through the protrusion. Due to the radial distance between the fulcrum (inner ring bearing) and the force point (protrusion contact point) of the connecting plate, a lever structure is formed, converting the large-diameter, low-torque rotation of the outer rotor into the small-diameter, high-torque rotation of the central output shaft, achieving significant torque boosting and flywheel energy storage effects.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and more specifically, to a lever-type power-enhancing motor that amplifies torque through the principle of mechanical levers. Background Technology

[0002] Permanent magnet synchronous motors are widely used in industrial drives, electric vehicles, and home appliances due to their high efficiency and high power density. Conventional permanent magnet synchronous motors are divided into internal rotor and external rotor types. External rotor motors typically have higher torque density, but their direct output torque is still insufficient for applications requiring extremely high starting torque, such as heavy equipment and electric vehicles.

[0003] To increase output torque, there are two main conventional technical approaches: one is to reduce speed and increase torque through a gearbox, and the other is to design a larger and more powerful motor. The former introduces gear transmission, which has problems such as efficiency loss, noise, wear, and the need for lubrication and maintenance; the latter leads to a significant increase in motor size, weight, and cost, while reducing power density.

[0004] Therefore, there is an urgent need for a new type of motor structure that can significantly improve output torque without increasing the size and weight of the motor itself, while maintaining a compact structure and reliable operation. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a lever-type power-enhancing motor. It utilizes the mechanical lever principle to convert the large-radius rotational motion of the outer rotor into the small-radius, high-torque rotational motion of the central output shaft, thereby achieving effective torque amplification. It also features a compact structure and stable operation.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0007] A lever-type power-boosting motor includes: a base, an inner stator fixed to the base, an outer rotor sleeved on the outside of the inner stator and rotatable relative to it, a coil structure disposed in a slot of the inner stator, a central output shaft, and a flywheel, and further includes a lever transmission mechanism; the lever transmission mechanism includes: an inner core fixedly disposed on the central axis of the inner stator; a right side plate fixedly connected to the right side of the outer rotor, the central region of which is supported on the inner core by a first bearing, and the inner surface of the right side plate is provided with at least one protrusion offset from its rotation center; a connecting plate, the inner ring of which is supported on the central output shaft by a flat key; the connecting plate... A transmission slot is provided to fit the protruding post, which can be slidably inserted into the transmission slot. The right side of the connecting plate is fixedly connected to the flywheel. The flywheel is fixedly connected to the central output shaft coaxially. When the outer rotor is driven to rotate by the magnetic field, the protruding post on the right side plate moves the transmission slot on the connecting plate, driving the connecting plate to swing around the inner core. The connecting plate transmits power to the flywheel and the central output shaft. In this process, the radial distance from the protruding post to the center line of the inner core constitutes the power arm of the lever, and the radial distance from the transmission slot to the center line of the inner core constitutes the resistance arm of the lever. The torque is amplified by the lever relationship that the power arm is greater than the resistance arm.

[0008] Preferably, the transmission slot is an elongated oval hole, an arc-shaped elongated hole, or a straight elongated slot, with its length extending radially along the connecting plate, providing sliding space for the protruding post to accommodate radial displacement changes during the lever's swing process.

[0009] Preferably, the mating surface between the protrusion and the transmission hole groove is a roller bearing or a sliding bearing structure to reduce friction loss.

[0010] Preferably, the diameter of the outer rotor is much larger than the diameter of the flywheel, the length of the power arm is the radius of the outer rotor, the length of the resistance arm is the distance from the center of the transmission slot to the center line of the inner core, and the gain factor of the output torque is theoretically equal to the ratio of the length of the power arm to the length of the resistance arm.

[0011] Preferably, the flywheel has a large moment of inertia, which is used to smooth the torque fluctuations generated by the lever transmission mechanism near the dead point and store kinetic energy, releasing energy to maintain stable operation when the load changes abruptly.

[0012] Preferably, it also includes a left side plate, which is fixed to the base, and the left side of the inner stator is fixed to the left side plate; the right side of the outer rotor is connected to the right side plate by a screw, and the center of the right side plate is supported on the connecting plate by a bearing.

[0013] Preferably, the inner core is a cylindrical or stepped shaft structure, and is fixed to the center of the inner stator by interference fit or fasteners.

[0014] Preferably, the coil structure is a three-phase AC winding, which generates a rotating magnetic field to drive the outer rotor after being supplied with frequency-converted AC power.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] Significant torque increase: Through a clever lever mechanism, rotational motion is directly converted into increased torque output without the need for an additional reduction gearbox. The theoretical torque increase ratio is determined by the ratio of the outer rotor radius to the length of the lever resistance arm, resulting in a significant gain effect.

[0017] Compact structure: The lever transmission mechanism is integrated inside the motor and is integrated with the motor body, resulting in a compact overall structure and high space utilization.

[0018] High reliability: It reduces intermediate links such as gear transmission, and the main moving parts are supported by bearings, resulting in low friction loss, long service life and low maintenance requirements.

[0019] Smooth operation: The introduction of a high-inertia flywheel effectively absorbs torque fluctuations in the lever mechanism near the reversal point (dead point), making the output torque more stable, especially suitable for occasions requiring smooth high-torque start-up.

[0020] High efficiency: It avoids the efficiency loss of multi-stage gear transmission, the transmission path is direct, and the energy conversion efficiency is high. Attached Figure Description

[0021] Figure 1 This is an axial cross-sectional view of the lever-type energy-boosting motor of this utility model.

[0022] Figure 2 This is a schematic diagram of the lever transmission mechanism of this utility model (partial schematic diagram of the right side plate and connecting plate).

[0023] (In the attached diagram: 1-Base; 2-Left side plate; 3-Inner stator; 4-Coil structure; 5-Outer rotor; 6-Permanent magnet; 7-Right side plate; 71-Protruding column; 8-Inner core; 9-First bearing; 11-Connecting plate; 111-Transmission slot; 12-Flywheel; 13-Center output shaft; 14-Flat key; 15-Outer shell; 16-Third bearing; 17-Fourth bearing; 18-Fifth bearing.) Detailed Implementation

[0024] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0025] like Figure 1As shown, the lever-type energy-boosting motor of this utility model mainly includes a base 1, on which an inner stator 3 is fixedly mounted via a left side plate 2. A three-phase coil structure 4 is embedded in the silicon steel sheet groove of the inner stator 3. An outer rotor 5 is supported on the left side plate via a third bearing 16 and can rotate around the inner stator 3. A permanent magnet 6 (or an attached type) is embedded inside the outer rotor 5. A right side plate 7 is fixed to the right side of the outer rotor 5. The lever-type energy-boosting motor of this utility model further includes a core component—a lever transmission mechanism.

[0026] The core component, the lever transmission mechanism, has the following structure: A cylindrical inner core 8 is press-fitted into the center hole of the inner stator 3 via an interference fit. The center hole of the right side plate 7 is supported on the right end of the inner core 8 by a first bearing 9. On the inner side of the right side plate 7, a protruding post 71 (or two or more) is symmetrically fixed on the same circumference. A disc-shaped connecting plate 11 has its inner ring supported on the central shaft by a flat key 14. Corresponding to the vertical position of the protruding post 71, a radially extending circular hole is opened on the other side of the central shaft on the connecting plate 11, serving as a transmission slot 111. The protruding post 71 is inserted into the elongated hole and can slide along the length of the hole. A heavy flywheel 12 is bolted to the right side of the connecting plate 11, and the center hole of the flywheel 12 is connected to the central output shaft 13 via a flat key 14. The central output shaft 13 is supported in the hole of the inner core 8 by a bearing. The entire device is encapsulated by an outer casing 15.

[0027] Working process: When a variable frequency three-phase AC current is applied to the coil structure 4, a rotating magnetic field is generated, driving the outer rotor 5 and its right side plate 7 to rotate together. The protrusion 71 on the right side plate 7 then performs a circular motion. Since the connecting plate 11 is limited to rotating around the inner core 8 by the flat key and flywheel of its inner ring, the protrusion 71 slides in the circular hole 111 of the connecting plate 11 while performing a circular motion, and pushes the side wall of the elongated hole 111, thereby forcing the connecting plate 11 to rotate around the inner core 8.

[0028] Lever principle analysis (see) Figure 2 Let L1 (effort arm) be the distance from the center of the protruding post 71 to the center line of the inner core 8 (fulcrum O), and L2 (resistance arm) be the distance from the force center of the transmission slot 111 to the fulcrum O. According to the lever balance principle: Because of the large radius of the outer rotor, L1 is usually designed to be much larger than L2 (e.g., Then the output force During rotational motion, force manifests as torque, thus the torque received by the central output shaft 13 is amplified by approximately 5 times. The flywheel 12 stores kinetic energy, and when the convex post 71 passes through an unfavorable angle (such as a dead point position) of the connecting plate 11, the flywheel 12 releases the energy, ensuring smooth output shaft torque.

[0029] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A lever-type energy-boosting motor, including: The base, the inner stator fixed to the base, the outer rotor sleeved on the outside of the inner stator and rotatable relative to it, the coil structure disposed in the slot of the inner stator, the central output shaft and the flywheel, characterized in that: it further includes a lever transmission mechanism; The lever transmission mechanism includes: The inner core is fixedly mounted on the central axis of the inner stator; The right side plate is fixedly connected to the right side of the outer rotor. Its central area is supported on the inner core by a first bearing, and the inner surface of the right side plate is provided with at least one protrusion that is offset from its rotation center. The connecting plate has its inner ring supported on the central output shaft by a flat key; the connecting plate has a transmission hole groove adapted to the protrusion, and the protrusion is slidably inserted into the transmission hole groove; the right side of the connecting plate is fixedly connected to the flywheel. The flywheel is coaxially and fixedly connected to the central output shaft; When the outer rotor is driven to rotate by the magnetic field, the protrusion on the right side plate moves the transmission slot on the connecting plate, driving the connecting plate to swing around the inner core. The connecting plate transmits power to the flywheel and the central output shaft. In this process, the radial distance from the protrusion to the center line of the inner core forms the power arm of the lever, and the radial distance from the transmission slot to the center line of the inner core forms the resistance arm of the lever. The torque is amplified by the lever relationship that the power arm is greater than the resistance arm.

2. The lever-type energy-boosting motor according to claim 1, characterized in that: The transmission slot is an elongated oval hole, an arc-shaped elongated hole, or a straight elongated slot, and its length extends radially along the connecting plate, providing sliding space for the protruding post to accommodate radial displacement changes during the lever swing process.

3. The lever-type energy-boosting motor according to claim 1, characterized in that: The mating surface between the protrusion and the transmission hole groove is a roller bearing or a sliding bearing structure to reduce friction loss.

4. The lever-type energy-boosting motor according to claim 1, characterized in that: The diameter of the outer rotor is much larger than the diameter of the flywheel. The length of the power arm is the radius of the outer rotor. The length of the resistance arm is the distance from the center of the transmission slot to the center line of the inner core. The theoretical gain factor of the output torque is equal to the ratio of the length of the power arm to the length of the resistance arm.

5. The lever-type energy-boosting motor according to claim 1, characterized in that: The flywheel has a large moment of inertia, which is used to smooth the torque fluctuations generated by the lever transmission mechanism near the dead point and store kinetic energy, releasing energy to maintain stable operation when the load changes abruptly.

6. The lever-type energy-boosting motor according to claim 1, characterized in that: It also includes a left side plate, which is fixed to the base, and the left side of the inner stator is fixed to the left side plate; the right side of the outer rotor is connected to the right side plate by a screw, and the center of the right side plate is supported on a connecting plate by a bearing.

7. The lever-type energy-boosting motor according to claim 1, characterized in that: The inner core is a cylindrical or stepped shaft structure, and is fixed to the center of the inner stator by interference fit or fasteners.

8. The lever-type energy-boosting motor according to claim 1, characterized in that: The coil structure is a three-phase AC winding, which generates a rotating magnetic field to drive the outer rotor after being supplied with frequency-converted AC power.

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