CN211606421U - Flexible film linear motor - Google Patents

Abstract

The utility model discloses a flexible film linear electric motor. Wherein, include: the stator and the rotor are respectively composed of electrodes, a power supply bus and a flexible insulating layer, and are distributed in a fitting mode. The utility model discloses an thereby adopt between stator and active cell evenly distributed electrode to produce the technological means of electrostatic force drive active cell motion, overcome the linear electric motor structure that exists among the prior art complicacy, the numerous and diverse technical problem of control principle, realized linear electric motor simple structure, the control principle is succinct, can realize flexible bending deformation, strong magnetic field resistant, the little technological effect of operation noise. The utility model discloses but wide application in mechano-electronic field.

Description

Flexible film linear motor

Technical Field

The utility model belongs to the technical field of mechano-electronics and specifically relates to a flexible film linear electric motor.

Background

In recent decades, with the development of industrial technologies, the requirements for driving devices have been continuously increased, and the advantages of linear motors have been continuously discovered in the industrial field, and linear motors are widely used in mechanical arms of factories, industrial machine tools, and various devices involving linear motion, and meanwhile, linear motors are widely used in various transportation devices such as magnetic levitation trains, and are widely applied to power devices of ships, but the existing rigid linear motors have the defects of large heat productivity, complex structure, easiness in being influenced by external magnetic fields, and the like in the using process.

In addition to the above applications, as robotics is becoming smaller and smaller, the degree of precision is increasing, and the demand for driving equipment is also increasing. In the process of miniaturization, the traditional motor has the defects of poor maneuverability, complex structure, obvious reduction of efficiency and the like, so that novel driving modes such as electrostatic driving and the like are generated at the same time. The electrostatic driving is a technology for completing driving by utilizing acting force between charges, is mainly applied to a Micro Electro Mechanical System (MEMS) at present, and has more excellent performance in the field of the MEMS due to the advantages of simple structure, simplicity and convenience in operation and the like compared with the traditional electromagnetic driving and electrohydraulic driving. Compared with the traditional electromagnetic driving mode, the electrostatic driving has the advantages of simple structure, small heat productivity and convenience in driving and controlling, and has better performance in an MEMS system; compared with novel magnetic induction driving, the electrostatic driving has no problem of electromagnetic interference, the reliability is higher, and the energy conversion efficiency is higher; compared with piezoelectric driving, electrostatic driving can provide continuous and stable output and can achieve large-displacement output. The research application of electrostatic driving is still in the beginning stage.

In the prior art, an electrostatic driving motor generally utilizes the micro deformation of a beam or a plate under the action of electrostatic force to do work, is mainly applied to generating vibration or micro deformation, has a complex structure and a complex control principle, and is difficult to provide long-distance stable output.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, an object of the utility model is to provide a flexible film linear electric motor can realize linear electric motor simple structure, and the control principle is succinct, the technical effect of long distance stable output.

The utility model adopts the technical proposal that:

there is provided a flexible thin film linear motor including: the stator and the rotor respectively comprise electrodes, a power supply bus and a flexible film, and are distributed in a fitting mode.

Furthermore, the electrodes are uniformly distributed along the linear direction, are arranged in a multi-phase alternative mode, are communicated with the power supply bus, and are provided with contacts at the tail end of the power supply bus for being communicated with an external power supply.

Furthermore, alternating voltage is also connected to the stator and the mover, the stator and the mover are mutually attached to form an attaching surface, so that corresponding electrodes between the mover and the stator are provided with charges with opposite polarities, and electrostatic force drive is generated.

Further, the speed of movement of the mover depends on the frequency of the incoming alternating voltage.

Further, an insulating film is provided on one side or both sides of the electrode.

Further, the stator and the rotor are distributed in a single-layer or multi-layer overlapping mode.

The utility model has the advantages that:

the utility model discloses an thereby adopt between stator and active cell evenly distributed electrode to produce the technological means of electrostatic force drive active cell motion, the technical problem that the linear electric motor structure that exists is complicated, the control principle is numerous and diverse, be difficult to the stable output of long distance has been overcome, linear electric motor simple structure has been realized, the control principle is succinct, can long distance steady operation's technological effect.

Drawings

Fig. 1 is a schematic structural principle diagram of an embodiment 1 of a flexible film linear motor according to the present invention;

fig. 2 is a schematic side view of a flexible film linear motor of embodiment 1 of the present invention;

fig. 3 is a schematic wiring diagram of embodiment 2 of a flexible film linear motor according to the present invention;

fig. 4 is a circuit layout diagram of embodiment 3 of a flexible film linear motor according to the present invention;

fig. 5 is an operation schematic diagram of embodiment 3 of the flexible film linear motor of the present invention.

Description of reference numerals:

01: a stator;

02: a mover;

03: a flexible insulating layer;

04: an electrode;

05: a power supply bus.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Example 1: in this embodiment, a single-layer stator and a mover are taken as an example for description, and in practical application, the stator and the mover may be stacked in a single layer or multiple layers.

As shown in fig. 1 and 2, the flexible film linear motor includes a stator 01 and a mover 02, where the stator 01 and the mover 02 are both flexible structures, and the flexible structures refer to structures whose geometric non-linear factors have a large influence in analysis and are not negligible. The stator 01 and the rotor 02 respectively comprise electrodes 04, flexible insulating layers 03 and power supply buses 05 which are arranged along a straight line, the flexible insulating layers 03 can be arranged on two sides of the electrodes 04 or only on one side, the rotors 02 correspond to the electrodes on the stator 01 one by one, and the electrodes are communicated with an external power supply circuit through an etching circuit or a direct connection mode.

Preferably, the stator 01 and the mover 02 are bonded to each other, and a medium that can be filled with an insulating medium is provided in a bonding surface thereof, and the bonding surface medium is generally air, or may be another insulating medium that can be lubricated.

A flexible insulating layer 03 is provided on one or both sides of the electrodes.

Example 2: as shown in fig. 3, the flexible film linear motor is powered by three-phase or other multi-phase ac power, and may be powered by the same power supply or by independent power supplies, where there is a frequency difference between the ac power received by the stator 01 and the ac power received by the mover 02.

The electrodes 04 are uniformly distributed along the linear direction, the radial dimension of the electrodes 04 is extremely small, the electrodes 04 are arranged in a multi-phase alternating mode and are communicated with the power supply bus 05, and the tail end of the power supply bus 05 is provided with a contact for being communicated with an external power supply.

The number of each group corresponds to the number of phases of the driving power supply, and the number of each group is generally three to four phases; the electrodes 04 are externally distributed with power supply buses 05, the number of the buses corresponds to the number of phases of the driving power supply, the ends of the buses are provided with electric shocks for connecting with an external power supply, and the electrodes 04 connected with the same phase of the power supply are supplied with power by one power supply bus 05; the electrodes 04 and the power supply bus 05 are wrapped by a flexible insulating layer 03, and the flexible insulating layer 03 is used for insulating and protecting the internal circuit and the electrodes 04.

Preferably, the flexible insulating layer 03 material is a flexible insulating material such as barium carbonate and the like.

Preferably, the electrode 04 material is copper or other conductive material.

Preferably, the outer side of the flexible insulating layer 03 is smooth to reduce friction during movement.

Preferably, the flexible insulating layer 03 may be disposed only on one side of the electrode, or may be disposed on both sides.

Preferably, the contact surfaces of the mover 02 and the stator 01 may be filled with a substance for insulation or lubrication.

Preferably, the alternating voltage may be a three-phase or more-phase voltage.

Preferably, by controlling the voltage frequency and amplitude, the movement speed of the motor can be controlled.

Alternating voltage is also connected to the stator 01 and the mover 02, the mover 02 and the stator 01 are mutually attached to form an attaching surface, corresponding electrodes between the mover 02 and the stator 01 are charged with opposite polarities, and electrostatic force driving is generated.

The speed of movement of the mover depends on the frequency of the applied alternating voltage.

The alternating voltages are three or more phase voltages having a frequency difference.

The electrodes are driven with a multiphase alternating current. When the motor works, multiphase alternating voltages are introduced to the rotor 02 and the stator 01 through an external power supply, so that a frequency difference exists between alternating currents connected to the stator 01 and the rotor 02, corresponding electrodes on the stator and the rotor are charged with opposite polarities, an electrostatic force is generated, the rotor 02 is driven to move relative to the stator 01, and electric energy is converted into mechanical energy.

The control of the motor is typically performed by varying the frequency and amplitude of the drive voltage. Compared with a common electrostatic motor, the motor in the embodiment adopts a flexible film structure, can be bent at will, and can generate large displacement.

The mover 02 is movable within the bonding surface by electrostatic force generated by the electrodes.

Preferably, the mover 02 is moved in a manner of sliding in a direction perpendicular to the electrodes within the abutment surface, and the moving speed of the mover 02 depends on the frequency and amplitude of the applied alternating voltage.

Example 3: as shown in fig. 4, the flexible film linear motor may use a power supply bus 05 to supply power to the electrodes 04, and since the electrodes 04 are arranged in a multi-phase alternating manner, a multi-layer printing is required, and a dotted line in the figure is a bus printed on the bottom layer.

As shown in fig. 5, when the circuit is switched on, due to the difference in frequency between the voltages, a set of corresponding electrodes 04 carries charges with opposite polarities, so that the mover 02 and the stator 01 can be attached to each other, and an electrostatic force is generated to push the mover to move along the attachment surface; in the moving process of the mover 02, the polarity of the charges on the electrodes 04 is changed, and the mover is continuously pushed to advance.

While the preferred embodiments of the present invention have been described, the present invention is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined by the appended claims.

Claims (4)

1. A flexible film linear motor, comprising: stator and active cell, stator and active cell all include electrode, power supply bus and flexible insulating layer, stator and active cell distribute with the laminating mode, stator and active cell have still been accessed into alternating voltage, and stator and active cell laminate each other and form the binding face, make between active cell and the stator corresponding electrode have opposite polarity's electric charge, produce the drive, the moving speed of active cell depends on the frequency of access alternating voltage, alternating voltage is the three-phase or more looks voltages that have the frequency difference.

2. The flexible film linear motor of claim 1, wherein the electrodes comprise stator electrodes and rotor electrodes, the stator electrodes and the rotor electrodes are uniformly distributed along a linear direction, are arranged in a multi-phase alternating manner, are communicated with the power supply bus, and are provided with contacts at the tail ends of the power supply bus for communicating with an external power supply.

3. The flexible film linear motor of claim 2, wherein said flexible insulation layer is disposed on one or both sides of said stator electrodes and said mover electrodes.

4. The flexible film linear motor of claim 1, wherein the stator and the mover are stacked in a single layer or multiple layers.

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