Electromagnetic vibration reduction flywheel

Abstract

The invention provides an electromagnetic vibration reduction flywheel which comprises a flywheel body, an electromagnetic coil assembly, a vibration reduction 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 arranged on the center shaft column in a sleeving mode, and the spring compression flail block is connected to the flail block connecting shaft and can slide in the radial direction. The spring support is arranged on the middle shaft column below the flail block connecting shaft, the damping spring is sleeved on the periphery of the spring compression flail block, the upper end is connected with the suction plate, and the lower end 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] The present invention relates to the technical field of flywheels, and in particular to an electromagnetic vibration damping flywheel. Background Art

[0002] Hybrid vehicles are quite popular in the market now. The characteristic of a hybrid vehicle is that the engine and the drive motor alternately transmit power. When the engine and the drive motor are connected in series, power is transmitted outward through a flywheel, and the engine and the drive motor share the same flywheel, resulting in mutual interference in their power outputs; moreover, the characteristic of the drive motor is that it accelerates relatively fast. When the drive motor transmits power outward, the acceleration of the connected flywheel is also relatively high, and at the same time it drives other connected components to move together. Because they are all rigid connections without vibration damping, it will cause damage and reduced reliability.

[0003] In the prior art, a traditional mechanical flywheel stores and releases energy through a physical method. When used in an automobile, it can help smooth the torque fluctuations of the engine, but it lacks a vibration damping function. The rigidly connected flywheel cannot absorb and relieve dynamic loads, and cannot solve the dynamic load problem caused by the series connection of the engine and the drive motor in a hybrid vehicle, 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. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: In order to overcome the deficiencies in the prior art, the present invention provides an electromagnetic vibration damping flywheel, which combines the electromagnetic attraction method and the vibration damping function of a spring.

[0006] The technical solution adopted by the present invention to solve its technical problems is: an electromagnetic damping flywheel, which includes a flywheel, an electromagnetic coil assembly, a damping spring, a suction plate, a spring pressing flyweight, a spring bracket and a flyweight connecting shaft. Among them, the electromagnetic coil assembly is arranged on one side of the suction plate. A central shaft column is provided on the side of the suction plate facing away from the electromagnetic coil assembly. The flyweight connecting shaft includes a shaft collar, and the shaft collar is sleeved outside the central shaft column. A plurality of guiding strips are provided on the outer periphery of the shaft collar, and the guiding strips extend radially outward. There are a plurality of spring pressing flyweights, and the overall shape is fan-shaped and the same as the number of guiding strips. A guiding hole is provided on the inner side surface of the spring pressing flyweight, and the guiding strip is inserted into the guiding hole so that the spring pressing flyweight can slide radially along the guiding strip. The spring bracket is arranged on the central shaft column below the flyweight connecting shaft. The damping spring is sleeved outside the spring pressing flyweight, with the upper end connected to the suction plate and the lower end connected to the spring bracket. An inner cavity is provided on one side of the flywheel, and the central shaft column and the spring bracket, flyweight connecting shaft, spring pressing flyweight and damping spring arranged thereon are integrally placed in the inner cavity, and the outer side of the damping spring is coupled with the side wall of the inner cavity through friction. When the driving motor runs fast, the flywheel and its connecting components are buffered and damped by the damping spring, and can withstand high acceleration to avoid damage to the components. By controlling the on-off of the electromagnetic coil, the access state of the electromagnetic flywheel is controlled to avoid mutual interference during the power output between the engine and the driving motor.

[0007] Further, a first limiting structure is provided on the joint surface between adjacent spring pressing flyweights. The limiting structure includes a convex block provided on one side of the spring pressing flyweight and a notch provided on the other side of the spring pressing flyweight, and the convex block and the notch are complementary in shape.

[0008] Preferably, there are three spring pressing flyweights, which are evenly distributed along the circumferential direction.

[0009] Further, a second limiting structure is also provided between the spring pressing flyweight and the suction plate. The second limiting structure includes a supporting limiting strip provided on the outer edge of the side of the spring pressing flyweight facing the suction plate, and a convex platform is provided on the suction plate. The supporting limiting strip and the convex platform are clamped. When the spring pressing flyweight moves radially inward along the guiding column, the end surface of the supporting limiting strip abuts against the end surface of the suction plate, and at the same time, the inner ring is clamped with the convex platform.

[0010] Further, in order to facilitate the connection between the damping spring and the suction plate, a spring clamping hole is provided on the suction plate, and the upper end of the damping spring is connected in the spring clamping hole.

[0011] Further, to facilitate the connection of the damping spring, a limit ring is provided around the end face of the spring bracket. A rabbet is provided on the limit ring, and a clamping groove is provided on the spring bracket opposite to the rabbet. The lower end of the damping spring is coupled to the limit ring, and the end of the lower end is embedded in the groove, and the end face of the end abuts against the rabbet.

[0012] Further, a ring groove is provided on the end face of the suction plate facing the electromagnetic coil assembly.

[0013] Further, the flywheel includes a wheel disc, an annular external tooth is provided on the wheel disc, the wheel disc and the external tooth jointly enclose an inner cavity, a counterbore is provided on the bottom surface of the inner cavity on the wheel disc, and a plurality of connection holes are provided in the counterbore for connecting the engine.

[0014] The beneficial effects of the present invention are as follows: An electromagnetic damping flywheel provided by the present invention improves the original mechanical flywheel, adds electromagnetic control, and uses a damping spring and a flywheel to couple between the engine and the drive motor. While achieving damping and smoothing the torque fluctuation of the engine, it can also cooperate with the on-off control of the electromagnetic coil to control the state of the damping spring, thereby adjusting the coupling state with the flywheel to solve the dynamic load problem caused by the series connection of the engine and the drive motor in a hybrid vehicle. Brief Description of the Drawings

[0015] The following further describes the present invention with reference to the drawings and embodiments.

[0016] Figure 1 is a three-dimensional structural schematic diagram of the electromagnetic damping flywheel of the present invention.

[0017] Figure 2 is a cross-sectional structural schematic diagram of the electromagnetic damping flywheel.

[0018] Figure 3 is a structural schematic diagram of the internal spring pressing the flyweight of the electromagnetic damping flywheel.

[0019] Figure 4 is a structural schematic diagram of the internal spring pressing the flyweight of the electromagnetic damping flywheel.

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

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

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

[0023] Figure 8 is a structural schematic diagram of the spring pressing the flyweight.

[0024] Figure 9 is a structural schematic diagram of the spring pressing the flyweight.

[0025] Figure 10 It is a schematic structural diagram of a spring bracket.

[0026] Figure 11 It is a schematic structural diagram of a flyweight connecting shaft.

[0027] Figure 12 It is a schematic structural diagram of a flywheel.

[0028] In the figure: 1. Flywheel, 1.1 Outer teeth, 1.2 Disk, 1.3 Connecting hole, 1.4 Sunk groove, 2. Electromagnetic coil assembly, 2.1 Lead terminal, 3. Damping spring, 4. Sucking plate, 4.1 Central shaft column, 4.2 Boss, 4.3 Spring clamping hole, 4.4 Ring groove, 5. Spring-loaded flyweight, 5.1 Guide hole, 5.2 Projection, 5.3 Notch, 5.4 Support limiting strip, 6. Spring bracket, 6.1 Stopper, 6.2 Limiting ring, 6.3 Card slot, 7. Flyweight connecting shaft, 7.1 Guide strip, 7.2 Shaft collar. Detailed implementation manners

[0029] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0032] As shown Figures 1-11 in the figure, an electromagnetic damping flywheel of the present invention includes a flywheel 1, an electromagnetic coil assembly 2, a damping spring 3, a suction plate 4, a spring pressing flyweight 5, a spring bracket 6, and a flyweight connecting shaft 7. Among them, the electromagnetic coil assembly 2 is arranged on one side of the suction plate 4. The electromagnetic coil assembly 2 includes an electromagnetic coil, a housing, and a lead terminal 2.1; a central shaft column 4.1 is provided on the side of the suction plate 4 facing away from the electromagnetic coil assembly 2. As shown Figure 11 in the figure, the flyweight connecting shaft 7 includes a shaft collar 7.2. The shaft collar 7.2 is sleeved outside the central shaft column 4.1. A plurality of guide strips 7.1 are provided on the outer periphery of the shaft collar 7.2. The guide strips 7.1 extend radially outward. There are a plurality of spring pressing flyweights 5, and the overall shape is fan-shaped and the same as the number of the guide strips 7.1; a guide hole 5.1 is provided on the inner side surface of the spring pressing flyweight 5. The guide strip 7.1 is inserted into the guide hole 5.1 so that the spring pressing flyweight 5 can slide radially along the guide strip 7.1. The spring bracket 6 is arranged on the central shaft column 4.1 below the flyweight connecting shaft 7. The damping spring 3 is sleeved outside the spring pressing flyweight 5, with the upper end connected to the suction plate 4 and the lower end connected to the spring bracket 6; a cavity is provided on one side of the flywheel 1. The central shaft column 4.1 and the spring bracket 6, flyweight connecting shaft 7, spring pressing flyweight 5, and damping spring 3 arranged thereon are integrally placed in the cavity, and the outer side of the damping spring 3 is coupled to the side wall of the cavity through friction.

[0033] As shown Figure 3 , Figure 4 , Figure 8 and Figure 9 in the figure, a first limiting structure is provided on the joint surface of adjacent spring pressing flyweights 5. The limiting structure includes a convex block 5.2 provided on one side of the spring pressing flyweight 5 and a notch 5.3 provided on the other side of the spring pressing flyweight 5, and the convex block 5.2 and the notch 5.3 are complementary in shape. Preferably, in this embodiment, there are three spring pressing flyweights 5, which are evenly distributed along the circumferential direction. A second limiting structure is further provided between the spring pressing flyweight 5 and the suction plate 4. The second limiting structure includes a support limiting strip 5.4 provided on the outer edge of the side of the spring pressing flyweight 5 facing the suction plate 4. A convex platform 4.2 is provided on the suction plate 4. The support limiting strip 5.4 and the convex platform 4.2 are snap-connected. When the spring pressing flyweight 5 moves radially inward along the guide post, the end surface of the support limiting strip 5.4 abuts against the end surface of the suction plate 4, and at the same time, the inner ring is snap-connected to the convex platform 4.2.

[0034] As shown Figure 5 and Figure 6As shown, spring snap holes 4.3 are provided on the attracting plate 4, and the upper end of the damping spring 3 is connected within the spring snap holes 4.3. An annular groove 4.4 is provided on the end face of the attracting plate 4 facing the electromagnetic coil assembly 2.

[0035] As Figure 10 shown, a limiting ring 6.2 is provided on the periphery of the end face of the spring bracket 6. A rabbet 6.1 is provided on the limiting ring 6.2, and a clamping groove 6.3 is provided on the spring bracket 6 opposite to the rabbet 6.1. 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, and the end face of the end abuts against the rabbet 6.1.

[0036] As Figure 12 shown, the flywheel 1 includes a wheel disc 1.2. Annular external teeth 1.1 are provided on the wheel disc 1.2. The wheel disc 1.2 and the external teeth 1.1 together enclose an inner cavity. A counterbore 1.4 is provided on the wheel disc 1.2 on the bottom surface of the inner cavity. A plurality of connection holes 1.3 are provided in the counterbore 1.4, and the connection holes 1.3 are used to connect to the engine.

[0037] Working principle: For this electromagnetic damping flywheel, its wheel disc 1.2 is connected to the engine, the attracting plate 4 is connected to the drive shaft of the drive motor, one end of the damping spring 3 is connected to the attracting plate 4, and the electromagnetic coil assembly 2 is fixed on the housing of the drive motor and cannot move.

[0038] Engine direct drive mode: When the electromagnetic coil is energized, it generates a magnetic force to attract the attracting plate 4 and makes both the attracting plate 4 and the damping spring 3 immobile, forcing the damping spring 3 to disengage from the flywheel 1. At this time, the flywheel 1 is only connected to the engine, the flywheel 1 does external work, the engine operates, 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.

[0039] Drive motor direct drive mode: The drive motor operates. At this time, the engine does not work, and the engine clutch disengages from the flywheel 1, and the flywheel 1 is in a free state. Since the electromagnetic coil of the electromagnetic flywheel is not energized, the electromagnetic coil and the spring attracting plate 4 are in a separated state. The drive shaft of the drive motor is connected to the attracting plate 4. At this time, the drive motor rotates, and the drive shaft of the drive motor drives the attracting plate 4, the damping spring 3, and the spring pressing flyweight 5 to rotate together. The damping spring is forced to open under the driving of the rotational force, and the spring pressing flyweight 5 is also thrown outward under the action of the rotational centrifugal force and presses against the damping spring 3 along the radial direction, further forcing the damping spring 3 to open outward. Since the engine is in a shutdown state at this time, only the drive motor does work on the flywheel 1, and the flywheel 1 outputs power externally.

[0040] Hybrid mode: When both the engine and the drive motor are operating, the electromagnetic coil is in a state of alternating switches. At this time, according to the alternating switching of the working states of the engine and the drive motor, the duty cycle of separation or suction is continuously adjusted.

[0041] Inspired by the ideal embodiments of the present invention described above, through the above description, relevant staff can make various changes and modifications without departing from the scope of the present invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An electromagnetic vibration reduction flywheel, characterized in that: The invention comprises a flywheel, an electromagnetic coil assembly, a damping spring, a suction plate, a spring-loaded swing block, a spring bracket and a swing block connecting shaft, wherein the electromagnetic coil assembly is arranged on one side of the suction plate, a central axis column is arranged on the side of the suction plate facing away from the electromagnetic coil assembly, the swing block connecting shaft comprises an axle ring, the axle ring is sleeved on the outer side of the central axis column, a plurality of guide strips are arranged on the outer periphery of the axle ring, the guide strips extend radially outward, the spring-loaded swing blocks are multiple, and the number is the same as the number of guide strips; the inner side of the spring-loaded swing block A guide hole is provided on the surface, and the guide bar is inserted into the guide hole so that the spring compression block can slide radially on the guide bar. The spring bracket is arranged on the central axis column below the swing block connecting shaft. The damping spring is sleeved on the periphery of the spring compression block, the upper end is connected to the suction plate, and the lower end is connected to the spring bracket; an inner cavity is provided on one side of the flywheel, and the central axis column and the spring bracket, swing block connecting shaft, spring compression block and damping spring arranged thereon are placed in the inner cavity as a whole, and the outer side of the damping spring is coupled with the side wall of the inner cavity by friction.

2. The electromagnetic vibration damping flywheel according to claim 1, characterized in that: A first limiting structure is provided on the joint surface of the adjacent spring compression and swinging blocks, and the limiting structure includes a protrusion arranged on one side of the spring compression and swinging block and a recess arranged on the other side of the spring compression and swinging block, and the shapes of the protrusion and the recess are complementary.

3. The electromagnetic damping flywheel according to claim 1, characterized in that: There are three spring-compressing swing blocks, which are evenly distributed along the circumference.

4. The electromagnetic damping flywheel according to claim 1, characterized in that: A second limiting structure is also provided between the spring compression block and the suction plate. The second limiting structure includes a support limiting strip arranged on the outer edge of the spring compression block facing the suction plate. A boss is provided on the suction plate, and the support limiting strip is clamped with the boss.

5. The electromagnetic vibration damping flywheel according to claim 1, characterized in that: The suction plate is provided with a spring clamping hole, and the upper end of the damping spring is connected in the spring clamping hole.

6. The electromagnetic damping flywheel according to claim 1, characterized in that: A limiting ring is provided on the periphery of the end face of the spring bracket, a stop is provided on the limiting ring, a slot is provided on the spring bracket opposite to the stop, the lower end of the damping spring is coupled to the limiting ring, and its lower end is embedded in the slot, and the end face of the end is against the stop.

7. The electromagnetic vibration damping flywheel according to claim 1, characterized in that: An annular groove is arranged on the end surface of the suction plate facing the electromagnetic coil assembly.

8. The electromagnetic damping flywheel according to claim 1, characterized in that: The flywheel comprises a wheel disc, on which an annular outer tooth is arranged, and the wheel disc and the outer tooth together form an inner cavity, on the bottom surface of the inner cavity, a groove is arranged on the wheel disc, and on the groove, a plurality of connection holes are arranged for connecting to the engine.

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