Electromagnetic vibration reduction flywheel

Abstract

The utility model provides an electromagnetic vibration damping flywheel which comprises a flywheel body, an electromagnetic coil assembly, a damping spring, a suction plate, a spring compression flail block and a flail block connecting shaft, the electromagnetic coil assembly is arranged on one side of the suction plate, a center shaft column is arranged on the other side of the suction plate, the flail block connecting shaft is sleeved on the center shaft column, the spring compression flail block is connected to the flail block connecting shaft, and the spring compression flail block is connected to the flail block connecting shaft. The spring support is arranged on the middle shaft column below the flail block connecting shaft, the periphery of the spring pressing flail block is sleeved with the damping spring, the upper end of the damping spring is connected with the suction plate, and the lower end of the damping spring is connected with the spring support. The spring support, the spring pressing flail block and the damper spring are integrally arranged in an inner cavity of the flywheel, and the outer side of the damper spring is coupled with the side wall of the inner cavity through friction force. The damping spring and the flywheel are coupled between the engine and the driving motor, vibration reduction and smoothing of torque fluctuation of the engine are achieved, and meanwhile the power-on and power-off states of the electromagnetic coil can be matched so as to solve the dynamic load problem caused by series connection of the engine and the driving motor in a hybrid vehicle.

Description

Technical Field

[0001] This utility model relates to the field of flywheel technology, and in particular to an electromagnetic vibration damping flywheel. Background Technology

[0002] Hybrid vehicles are currently quite popular in the market. A key feature of hybrid vehicles is the alternating transmission of power between the engine and the drive motor. When the engine and drive motor are connected in series, both transmit power through a flywheel. Since the engine and drive motor share the same flywheel, their power outputs interfere with each other. Furthermore, the drive motor is characterized by rapid acceleration. When the drive motor transmits power, the connected flywheel also experiences high acceleration, simultaneously driving other connected components. Because these are rigid connections without vibration damping, this can lead to damage and reduced reliability.

[0003] In existing technologies, traditional mechanical flywheels store and release energy physically. When used in automobiles, they can help smooth engine torque fluctuations, but they lack vibration damping. The rigidly connected flywheels cannot absorb and alleviate dynamic loads, and cannot solve the dynamic load problem caused by the series connection of the engine and drive motor in hybrid vehicles, thus reducing the reliability and lifespan of the system.

[0004] In view of this, it is necessary to improve the existing mechanical flywheel to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is: in order to overcome the shortcomings of the prior art, this utility model provides an electromagnetic vibration damping flywheel that combines electromagnetic attraction and the vibration damping function of a spring.

[0006] The technical solution adopted by this utility model to solve its technical problem is: an electromagnetic vibration damping flywheel, including a flywheel, an electromagnetic coil assembly, a vibration damping spring, a suction plate, spring-pressing swing blocks, a spring bracket, and a swing block connecting shaft. The electromagnetic coil assembly is disposed on one side of the suction plate, and a central shaft is provided on the side of the suction plate facing away from the electromagnetic coil assembly. The swing block connecting shaft includes a collar, which is sleeved on the outside of the central shaft. Multiple guide strips are provided on the outer circumference of the collar, extending radially outward. Multiple spring-pressing swing blocks are present, with an overall fan-shaped shape, and are connected to... The number of guide strips is the same; the inner side of the spring-pressing block is provided with guide holes, and the guide strips are inserted into the guide holes, allowing the spring-pressing block to slide radially on the guide strips. The spring bracket is set on the central column below the block connecting shaft. The damping spring is sleeved on the outer periphery of the spring-pressing block, with its upper end connected to the suction plate and its lower end connected to the spring bracket. The flywheel has an inner cavity on one side, and the central column, spring bracket, block connecting shaft, spring-pressing block, and damping spring are all placed inside the inner cavity, with the outer side of the damping spring coupled to the side wall of the inner cavity through friction. When the drive motor is running at high speed, the flywheel and its connecting components are buffered and damped by the damping spring, which can withstand high acceleration and prevent component damage. The electromagnetic flywheel's engagement state is controlled by switching the electromagnetic coil on and off, avoiding mutual interference between the engine and the drive motor during power output.

[0007] Furthermore, a first limiting structure is provided on the mating surface of the adjacent spring-pressing blocks. The limiting structure includes a protrusion on one side of the spring-pressing blocks and a recess on the other side of the spring-pressing blocks, and the protrusion and the recess have complementary shapes.

[0008] Preferably, the spring-pressing blocks are three in number and are evenly distributed circumferentially.

[0009] Furthermore, a second limiting structure is provided between the spring-pressing block and the suction plate. The second limiting structure includes a support limiting strip disposed on the outer edge of the side of the spring-pressing block facing the suction plate. The suction plate is provided with a boss, and the support limiting strip and the boss are engaged. When the spring-pressing block moves radially inward along the guide post, the end face of the support limiting strip abuts against the end face of the suction plate, and at the same time, the inner ring is engaged with the boss.

[0010] Furthermore, to facilitate the connection between the damping spring and the suction plate, the suction plate is provided with a spring clip hole, and the upper end of the damping spring is connected to the spring clip hole.

[0011] Furthermore, to facilitate the connection of the damping spring, a limiting ring is provided on the periphery of the end face of the spring bracket. The limiting ring has a stop, and the spring bracket opposite to the stop has a slot. The lower end of the damping spring is coupled to the limiting ring, and its lower end is embedded in the slot, with the end face abutting against the stop.

[0012] Furthermore, the suction plate has an annular groove on the end face facing the electromagnetic coil assembly.

[0013] Furthermore, the flywheel includes a disc with annular external teeth. The disc and the external teeth together form an inner cavity. On the bottom surface of the inner cavity, the disc has a groove with multiple connecting holes for connecting to the engine.

[0014] The beneficial effects of this utility model are as follows: This utility model provides an electromagnetic vibration damping flywheel, which improves upon the original mechanical flywheel by adding electromagnetic control. It uses a vibration damping spring and flywheel to couple the engine and drive motor. While achieving vibration damping and smoothing engine torque fluctuations, it can also control the state of the vibration damping spring by switching the electromagnetic coil on and off, thereby adjusting the coupling state with the flywheel to solve the dynamic load problem caused by the series connection of the engine and drive motor in hybrid vehicles. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a three-dimensional structural diagram of the electromagnetic vibration damping flywheel of this utility model.

[0017] Figure 2 This is a cross-sectional structural diagram of an electromagnetic vibration damping flywheel.

[0018] Figure 3 This is a schematic diagram of the structure of the spring pressing the sling block inside the electromagnetic vibration damping flywheel.

[0019] Figure 4 This is a schematic diagram of the structure of the spring pressing the sling block inside the electromagnetic vibration damping flywheel.

[0020] Figure 5 This is a schematic diagram of the suction plate structure.

[0021] Figure 6 This is a schematic diagram of the suction plate structure.

[0022] Figure 7 This is a cross-sectional structural diagram of the suction plate.

[0023] Figure 8 This is a schematic diagram of the spring-loaded rocker arm.

[0024] Figure 9This is a schematic diagram of the spring-loaded rocker arm.

[0025] Figure 10 This is a schematic diagram of the spring bracket.

[0026] Figure 11 This is a schematic diagram of the structure of the connecting shaft of the swing block.

[0027] Figure 12 This is a schematic diagram of the flywheel structure.

[0028] In the diagram: 1. Flywheel, 1.1. External gear, 1.2. Wheel disc, 1.3. Connecting hole, 1.4. Countersunk groove, 2. Electromagnetic coil assembly, 2.1. Lead terminal, 3. Vibration damping spring, 4. Suction plate, 4.1. Central column, 4.2. Boss, 4.3. Spring retaining hole, 4.4. Annular groove, 5. Spring pressing block, 5.1. Guide hole, 5.2. Protrusion, 5.3. Notch, 5.4. Support limiting strip, 6. Spring bracket, 6.1. Stop, 6.2. Limiting ring, 6.3. Slot, 7. Block connecting shaft, 7.1. Guide strip, 7.2. Collar. Detailed Implementation

[0029] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0032] like Figures 1-11 As shown, this utility model discloses an electromagnetic vibration damping flywheel, comprising a flywheel 1, an electromagnetic coil assembly 2, a vibration damping spring 3, a suction plate 4, a spring-pressing swing block 5, a spring bracket 6, and a swing block connecting shaft 7. The electromagnetic coil assembly 2 is disposed on one side of the suction plate 4, and includes an electromagnetic coil, a housing, and lead terminals 2.1. A central shaft post 4.1 is provided on the side of the suction plate 4 facing away from the electromagnetic coil assembly 2. Figure 11 As shown, the connecting shaft 7 of the spring-loaded blocks includes a collar 7.2, which is sleeved on the outside of the central shaft column 4.1. Multiple guide strips 7.1 are provided on the outer periphery of the collar 7.2, extending radially outward. Multiple spring-loaded blocks 5 are provided, with an overall fan-shaped shape, and the number is the same as the number of guide strips 7.1. Guide holes 5.1 are provided on the inner surface of each spring-loaded block 5, and the guide strips 7.1 are inserted into the guide holes 5.1, allowing the spring-loaded blocks 5 to... The guide bar 7.1 slides radially. The spring bracket 6 is set on the central column 4.1 below the swing block connecting shaft 7. The damping spring 3 is sleeved on the periphery of the spring-pressing swing block 5, with its upper end connected to the suction plate 4 and its lower end connected to the spring bracket 6. The flywheel 1 has an inner cavity on one side. The central column 4.1 and the spring bracket 6, swing block connecting shaft 7, spring-pressing swing block 5 and damping spring 3 set on it are placed in the inner cavity as a whole. The outer side of the damping spring 3 is coupled to the side wall of the inner cavity through friction.

[0033] like Figure 3 , Figure 4 , Figure 8 and Figure 9As shown, a first limiting structure is provided on the mating surface of adjacent spring-pressing blocks 5. The limiting structure includes a protrusion 5.2 on one side of the spring-pressing block 5 and a recess 5.3 on the other side of the spring-pressing block 5, and the protrusion 5.2 and the recess 5.3 are complementary in shape. Preferably, in this embodiment, there are three spring-pressing blocks 5, evenly distributed circumferentially. A second limiting structure is also provided between the spring-pressing block 5 and the suction plate 4. The second limiting structure includes a support limiting strip 5.4 on the outer edge of the side of the spring-pressing block 5 facing the suction plate 4. The suction plate 4 has a boss 4.2, and the support limiting strip 5.4 and the boss 4.2 are engaged. When the spring-pressing block 5 moves radially inward along the guide post, the end face of the support limiting strip 5.4 abuts against the end face of the suction plate 4, and the inner ring engages with the boss 4.2.

[0034] like Figure 5 and Figure 6 As shown, the suction plate 4 is provided with a spring retaining hole 4.3, and the upper end of the damping spring 3 is connected to the spring retaining hole 4.3. The suction plate 4 has an annular groove 4.4 on the end face facing the electromagnetic coil assembly 2.

[0035] like Figure 10 As shown, a limiting ring 6.2 is provided on the periphery of the end face of the spring bracket 6. The limiting ring 6.2 is provided with a stop 6.1. The spring bracket 6 opposite to the stop 6.1 is provided with a slot 6.3. The lower end of the damping spring 3 is coupled to the limiting ring 6.2, and its lower end is embedded in the slot, with the end face abutting against the stop 6.1.

[0036] like Figure 12 As shown, the flywheel 1 includes a disc 1.2, on which annular external teeth 1.1 are provided. The disc 1.2 and the external teeth 1.1 together form an inner cavity. On the bottom surface of the inner cavity, the disc 1.2 is provided with a groove 1.4, and the groove 1.4 is provided with a plurality of connecting holes 1.3 for connecting the engine.

[0037] Working principle:

[0038] The electromagnetic vibration damping flywheel has a disc 1.2 connected to the engine, a suction plate 4 connected to the drive shaft of the drive motor, a damping spring 3 connected at one end to the suction plate 4, and an electromagnetic coil assembly 2 fixed to the drive motor housing and cannot move.

[0039] Engine direct drive mode: When the electromagnetic coil is energized, it generates a magnetic force to hold the suction plate 4, and both the suction plate 4 and the damping spring 3 do not move, forcing the damping spring 3 to disengage from the flywheel 1. At this time, the flywheel 1 is only connected to the engine, and the flywheel 1 does work externally. The engine works, the engine clutch engages the flywheel 1, and the engine drives the flywheel 1 to transmit power. At this time, the drive motor does not work.

[0040] Direct drive mode: The drive motor is operating, but the engine is not running. The engine clutch is disengaged from flywheel 1, leaving flywheel 1 in a free state. Since the electromagnetic coil of the electromagnetic flywheel is not energized, the electromagnetic coil and spring-loaded plate 4 are separated. The drive shaft of the drive motor is connected to the plate 4, and the drive motor rotates. The drive shaft of the drive motor drives the plate 4, damping spring 3, and spring-pressing block 5 to rotate together. Driven by the rotational force, the damping spring is forced to open, and the spring-pressing block 5 is also thrown outwards by the centrifugal force of rotation, pressing radially onto the damping spring 3, further forcing the damping spring 3 to open outwards. Since the engine is off at this time, only the drive motor performs work on flywheel 1, and flywheel 1 outputs power.

[0041] Hybrid mode: When both the engine and the drive motor are working, the electromagnetic coil is in an alternating switching state. At this time, the duty cycle of separation or engagement is constantly adjusted according to the alternating working states of the engine and the drive motor.

[0042] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An electromagnetic damping flywheel, characterized by: The flywheel, the electromagnetic coil assembly, the damping spring, the suction plate, the spring compression flyweight, the spring support and the flyweight connecting shaft are included, wherein the electromagnetic coil assembly is arranged on one side of the suction plate, a middle shaft column is arranged on the side surface of the side of the suction plate away from the electromagnetic coil assembly, the flyweight connecting shaft includes a shaft ring, the shaft ring is sleeved on the outside of the middle shaft column, a plurality of guide strips are arranged on the outer periphery of the shaft ring, the guide strips extend outward in the radial direction, the spring compression flyweights are a plurality of and the same as the number of guide strips; a guide hole is arranged on the inner side surface of the spring compression flyweight, the guide strip is inserted into the guide hole, so that the spring compression flyweight can slide on the guide strip in the radial direction, the spring support is arranged on the middle shaft column below the flyweight connecting shaft, the damping spring is sleeved on the periphery of the spring compression flyweight, the upper end is connected to the suction plate, and the lower end is connected to the spring support; one side of the flywheel is provided with an inner cavity, the middle shaft column and the spring support, the flyweight connecting shaft, the spring compression flyweight and the damping spring arranged thereon are arranged in the inner cavity, and the outer side of the damping spring is coupled with the side wall of the inner cavity through friction force.

2. The flywheel of claim 1, wherein: A first limiting structure is arranged on the joint surface of adjacent spring compression flyweights, the limiting structure includes a protrusion arranged on one side of the spring compression flyweight and a notch arranged on the other side of the spring compression flyweight, and the protrusion and the notch are complementary in shape.

3. The flywheel of claim 1, wherein: The spring compression flyweights are three and are uniformly distributed in the circumferential direction.

4. The flywheel of claim 1, wherein: A second limiting structure is further arranged between the spring compression flyweight and the suction plate, the second limiting structure includes a support limiting strip arranged on the outer edge of one side of the spring compression flyweight facing the suction plate, a boss is arranged on the suction plate, and the support limiting strip and the boss are clamped.

5. The flywheel of claim 1, wherein: A spring clamping hole is arranged on the suction plate, and the upper end of the damping spring is connected in the spring clamping hole.

6. The flywheel of claim 1, wherein: A limiting ring is arranged on the end surface of the spring support, a stop opening is arranged on the limiting ring, a clamping groove is arranged on the spring support opposite to the stop opening, the lower end of the damping spring is coupled on the limiting ring, the lower end of the damping spring is embedded in the groove, and the end surface of the end portion abuts against the stop opening.

7. The flywheel of claim 1, wherein: An annular groove is arranged on the end surface of the side of the suction plate facing the electromagnetic coil assembly.

8. The flywheel of claim 1, wherein: The flywheel includes a wheel disc, an annular outer tooth is arranged on the wheel disc, the wheel disc and the outer tooth jointly enclose an inner cavity, a sunken groove is arranged on the wheel disc on the bottom surface of the inner cavity, a plurality of connecting holes are arranged on the sunken groove, and the connecting holes are used for connecting the engine.

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