CN110932522A

CN110932522A - Automobile permanent magnet electronic clutch

Info

Publication number: CN110932522A
Application number: CN201911253130.5A
Authority: CN
Inventors: 李文杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2020-03-27

Abstract

The invention provides an automobile permanent magnet electronic clutch which mainly comprises an engine, an electronic control system, a motor shaft, a conductor rotor, a steel body, a copper conductor, a magnetic rotor, a permanent magnet operating mechanism, a compression recovery mechanism and the like. The invention replaces the physical transmission between the motor and the load in the prior art by the way of transmitting the torque by the air gap, the motor and the load rotating shaft do not need to be mechanically connected, the invention has the function of load protection, easily solves the problem that the motor which is the most difficult to solve in a driving system is always burnt and damaged due to overload or locked rotation during the operation, and simultaneously can reduce vibration and noise. The device has a pure mechanical structure, does not use electricity, does not generate pollution such as harmonic waves, electromagnetic interference and the like, and is a green and environment-friendly product.

Description

Automobile permanent magnet electronic clutch

Technical Field

The invention relates to a clutch, in particular to an automotive permanent magnet electronic clutch.

Background

The clutch is a component directly connected with an engine in an automobile transmission system, is responsible for the cutting-off and combining action of power and the transmission system, can ensure the stable starting of the automobile when starting, can also ensure the smoothness when shifting gears, and also prevents the overload of the transmission system.

The clutch in the prior art mostly adopts a connecting mode of realizing automobile driving by a lever and gear principle, and the mode has the defects of large energy consumption of a motor, obvious system vibration and the like. In the prior art, the diameter of a disc speed regulator needs to be designed to be larger for the speed regulation of a permanent magnet speed regulator with high power and high torque, so that the peripheral speed is high at high rotating speed, the vibration is large, and the swing is also large; the axial size of the drum-type speed regulator is too long, the speed regulation control is difficult, the process is complex, and mechanical faults are easy to occur.

The application of permanent magnet drive technology in the automotive field is still a new topic. The permanent magnetic force driving technology is a new technology which realizes the non-contact transmission of force and torque by applying the magnetic force of permanent magnetic materials based on the basic theory of modern magnetics. The device implementing this technology is called a permanent magnet magnetic drive.

In 1940, the magnetic force driven pump is used by the English people for the first time to solve the leakage problem of the dangerous medium chemical pump. In 1999, MagnaDrive Inc. in the United states realizes speed regulation of rotating loads such as a fan, a water pump and the like, greatly improves transmitted power, enables the maximum power of a compact permanent magnetic coupler to reach 5000hp, greatly improves transmission efficiency of permanent magnetic transmission, comprehensively improves reliability of a motor system, and remarkably reduces operating cost of the system. The permanent magnet driving technology is developed to be more widely applied.

The permanent magnet driving technology is a breakthrough new technology developed internationally in recent years, and is an application technology specially aiming at load speed regulation and energy conservation of fans, pumps and the like. The system has the characteristics of high efficiency, energy conservation, high reliability, no rigid connection for torque transmission, capability of being applied in severe environment, great reduction of the vibration of the whole system, reduction of the system maintenance, prolongation of the service life of the system and the like. Particularly, the high speed regulation characteristic that no higher harmonic is generated and no motor is heated at low speed makes the motor become the first choice for the energy-saving technical transformation of fans and pumps.

However, the application of permanent magnet technology with obvious advantages in the field of automobile transmission is still a new subject, and clutches in the prior art are mostly in a mechanical connection mode, are poor in stability and easy to swing, and have many places needing improvement.

Disclosure of Invention

In order to solve the defects in the background technology, the invention provides an automobile permanent magnet electronic clutch, which utilizes the characteristic that a magnetic field can penetrate a certain space distance and material materials to transmit mechanical energy, uses an electronic control system to control a conductor rotor so as to complete the control of torque transmission, and realizes the clutch function through an operating mechanism and a compression return mechanism.

The technology of the invention replaces the mechanical transmission between the traditional motor and the load with the mode of transmitting the torque by the air gap, the motor and the load do not need to be mechanically connected and have the air gap, the motor drives the conductor disc to cut magnetic lines in a strong magnetic field generated by a magnet when rotating, the conductor disc generates eddy current, the eddy current generates a reverse induction magnetic field on the conductor disc to form magnetic torque, and the conductor disc and the permanent magnet disc are pulled to move relatively, thereby realizing the torque transmission between the motor and the load.

In order to achieve the purpose, the technical scheme of the invention is as follows:

automotive permanent magnet electronic clutch comprising: the engine and a motor shaft connected with the engine; the motor shaft is connected with the conductor rotor, the conductor rotor consists of a steel body and a copper conductor, and the steel body wraps the copper conductor; a cylindrical magnetic rotor is arranged opposite to the conductor rotor, and a permanent magnet is arranged on the rim of the cylindrical magnetic rotor; the magnetic rotor is connected with the operating mechanism, the pressing return mechanism and the driven shaft; an air gap is formed between the conductor rotor and the magnetic rotor; the electronic control system is coupled to the engine.

The control mechanism, the pressing return mechanism and the driven shaft are coaxial.

Compared with the prior art, the invention has the following advantages and effects:

and 1, load protection. The motor is often overloaded or locked during running, so that the motor is burnt, after the permanent magnet clutch is installed, the motor and the load are not directly and mechanically connected, and the impact type load has buffering and automatic protection functions, so that the problem which is the most difficult to solve in a driving system can be easily solved; 2. reducing vibration and noise. The mechanical connection needs compact shaft calibration, otherwise, strong mechanical vibration and noise can be caused, and accelerated wear of parts such as a bearing, a sealing ring and the like can be caused, the technology of the invention uses an air gap to transmit torque, laser shaft calibration is not needed during installation, the tolerable centering error is less than or equal to 3mm, and the vibration can be reduced by about 80%; 3. the device has a pure mechanical structure, does not use electricity, does not generate pollution such as harmonic waves, electromagnetic interference and the like, and is a green and environment-friendly product; 4. the starting can be buffered and can be started for multiple times.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a view from the A-A direction of the present invention;

in the figure: 1-an engine; 2-motor shaft; 3-a conductor rotor; 4-a steel body; 5-copper conductor; 6-permanent magnet; 7-a magnetic rotor; 8-an operating mechanism; 9-a compression return mechanism; 10-a driven shaft; 11-an air gap; 12-electronic control system.

Detailed Description

The invention is further explained with reference to the drawings.

As shown in fig. 1 and 2, an engine 1 is connected with a motor shaft 2, the motor shaft 2 is connected with a conductor rotor 3, and the conductor rotor 3 consists of a circular bottom surface and an annular side surface; the annular side surface is vertical to the bottom surface, the outer side is a steel body 4, and the inner side is a copper conductor 5. A cylindrical magnetic rotor 7 is arranged opposite to the conductor rotor 3, and permanent magnets 6 are uniformly arranged on the rim of the magnetic rotor 7. An air gap 11 is formed between the conductor rotor 3 and the magnet rotor 7. The magnetic rotor 7 is coupled to an operating mechanism 8, a compression return mechanism 9 and a driven shaft 10. The electronic control system 12 is coupled to the engine 1.

In the practical use process of the invention, the control mechanism 8 drives the magnetic rotor 7 to move left and right axially through the pressing return mechanism 9, thereby realizing the control of the air gap 11, the larger the air gap 11 is, the weaker the induction magnetic field is, the smaller the air gap 11 is, the stronger the induction magnetic field is, thereby achieving the adjustment of magnetic torque and realizing the clutch function.

Referring to fig. 1 and 2: the conductor rotor 3 is driven by the engine 1 to rotate, and the conductor rotor 3 cuts magnetic lines of force to generate an induction magnetic field and to do work through coupling motion with the magnetic rotor. The electronic control system 12 can automatically match and adjust the rotating speed of the conductor rotor 3 according to the requirement of the device, thereby adjusting the magnetic field working force and the induction magnetic field working force between the magnetic rotor 7 and the conductor rotor 3 to change the transmission torque, and generating the rotating speed slip between the magnetic rotor and the conductor rotor to achieve the purpose of speed regulation.

Claims

1. Automobile permanent magnetism electronic clutch, its characterized in that: comprises an engine (1) and a motor shaft (2) connected with the engine; the motor shaft (2) is connected with the conductor rotor (3), the conductor rotor (3) is composed of a steel body (4) and a copper conductor (5), and the steel body (4) wraps the copper conductor (5); a cylindrical magnetic rotor (7) is arranged opposite to the conductor rotor (3), and a permanent magnet (6) is arranged on the rim of the cylindrical magnetic rotor; the magnetic rotor (7) is connected with the operating mechanism (8), the pressing and returning mechanism (9) and the driven shaft (10); an air gap (11) is formed between the conductor rotor (3) and the magnetic rotor (7); the electronic control system (12) is coupled to the engine (1).

2. The automotive permanent magnet electronic clutch according to claim 1, characterized in that: the operating mechanism (8), the pressing and returning mechanism (9) and the driven shaft (10) are coaxial.