CN112202306A

CN112202306A - Electric device

Info

Publication number: CN112202306A
Application number: CN201910610711.3A
Authority: CN
Inventors: 刘澜
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-08
Filing date: 2019-07-08
Publication date: 2021-01-08

Abstract

The invention discloses an electric device, belonging to the field of power devices, comprising at least one oscillator; at least one stator, the stator is fixed in position, the stator is provided with magnetism so that a magnetic field is arranged around the stator, the oscillating piece is positioned in the magnetic field and is subjected to magnetic force, and the direction of the magnetic force can be periodically changed to drive the oscillating piece to periodically oscillate around the fixed end of the oscillator; the conversion device comprises an input end and an output end, the input end is connected with the fixed end of the oscillator, the oscillating piece can drive the input end to oscillate back and forth, and the conversion device can convert the reciprocating oscillation of the input end into unidirectional rotation of the output end; and the central shaft is connected with the output end of the conversion device and is driven by the output end to rotate in a single direction so as to output power outwards.

Description

Electric device

Technical Field

The invention relates to the field of power, in particular to an electric device for converting electric energy into kinetic energy

Background

The electric motor converts electric energy into mechanical energy (commonly called as a motor) through electromagnetic induction, and the electric motor mainly has the function of generating driving torque and is used as an electric appliance or a power source of various machines.

The motors can be classified into driving motors and control motors according to their applications, and further, the control motors are classified into stepping motors and servo motors.

The stepping motor is an open-loop control motor which converts an electric pulse signal into angular displacement or linear displacement, is a main executive element in a modern digital program control system, and is extremely widely applied. In the non-overload condition, the rotation speed and stop position of the motor only depend on the frequency and pulse number of the pulse signal, and are not influenced by the load change, when the stepping driver receives a pulse signal, the stepping driver drives the stepping motor to rotate by a fixed angle in a set direction, namely a stepping angle, and the rotation of the stepping motor is operated by one step at the fixed angle. The angular displacement can be controlled by controlling the number of pulses, so that the aim of accurate positioning is fulfilled; meanwhile, the rotating speed and the rotating acceleration of the motor can be controlled by controlling the pulse frequency, so that the aim of speed regulation is fulfilled.

A stepping motor generally has a permanent magnet as a rotor of the motor, and a stator winding generates a vector magnetic field when a current flows through the stator winding. The magnetic field drives the rotor to rotate for an angle, so that the directions of a pair of magnetic fields of the rotor are consistent with the direction of a magnetic field of the stator. When the vector field of the stator rotates an angle. The rotor also rotates an angle with the magnetic field. Every time an electric pulse is input, the motor rotates one angle and advances one step. The angular displacement output by the motor is in direct proportion to the input pulse number, and the rotating speed is in direct proportion to the pulse frequency. By changing the sequence of the energization of the windings, the motor will reverse. The rotation of the stepper motor can be controlled by controlling the number of pulses, the frequency, and the sequence of energization of the motor phase windings.

The stepping angle is an important index of the stepping motor, corresponding to a pulse signal, the angular displacement of the rotor of the motor is represented by theta, and the smaller the stepping angle is, the higher precision control can be provided.

As shown in fig. 16, it is a structure of a conventional stepping motor, and a stator fixed in position is arranged around a housing, and the stator has a coil, and can apply a magnetic force to a rotor, and the magnetic force to the rotor is changed by changing the direction of the coil to drive the rotor to step. On the one hand, the magnetic force direction of the stator to the rotation is not the same as the rotation of the rotor, and usually presents a larger angle, as shown in the upper left drawing and the lower left drawing, the force acting on the rotation direction of the rotor is small. In some cases, as shown in the upper right and lower right figures, the force of the magnetic force acting in the direction of the rotor is also relatively small. Generally, it is desirable that the magnetic force direction is the same as the rotation direction of the rotor, so that the magnetic force can provide the maximum torque to the rotor, and the output power of the rotor is improved. Therefore, the output power of the conventional stepping motor is limited.

Disclosure of Invention

In view of the above problems, an object of the present invention is to provide an electric device that can be applied to a plurality of fields and provides a large power output.

Specifically, the electric device includes:

the swinging device comprises a fixed end and at least one free end, the free end is provided with a swinging piece, and the swinging piece is driven by magnetic force with periodically changing direction so as to enable the swinging piece to swing periodically around the fixed end;

at least one stator, the stator is fixed in position, the stator is provided with magnetism so that a magnetic field is arranged around the stator, the oscillating piece is positioned in the magnetic field and is subjected to magnetic force, and the direction of the magnetic force can be periodically changed to drive the oscillating piece to periodically oscillate around the fixed end of the oscillator;

the conversion device comprises an input end and an output end, the input end is connected with the fixed end of the oscillator, the oscillating piece can drive the input end to oscillate back and forth, and the conversion device can convert the reciprocating oscillation of the input end into unidirectional rotation of the output end;

and the central shaft is connected with the output end of the conversion device and is driven by the output end to rotate in a single direction so as to output power outwards.

In a preferred embodiment, the stator is provided with a coil, a current can be passed through the coil to form a magnetic field around the stator, and the direction of the current in the coil can be periodically changed to periodically change the direction of the magnetic force applied to the oscillating piece, so as to further drive the oscillating piece to periodically oscillate around the corresponding fixed end.

In a preferred embodiment, the stator is a magnet, the oscillating member is provided with an energized coil to make the oscillating member magnetic, and the direction of the coil current on the oscillating member can be periodically changed to periodically change the direction of the magnetic force applied to the oscillating member, so as to further drive the oscillating member to periodically oscillate around the fixed end.

In a preferred scheme, the direction of the magnetic force applied to the swinging member is perpendicular to the connecting line of the free end and the fixed end, so that the magnetic force applied to the swinging member can be promoted to apply maximum torque to the fixed end.

In a preferred scheme, the conversion device comprises a one-way bearing, the one-way bearing comprises a one-way bearing outer ring and a one-way bearing inner ring in the one-way axial direction, the one-way bearing inner ring is connected with a central shaft, an outer fixing piece is arranged at the fixed end of the oscillator and connected to the one-way bearing outer ring, and the oscillating piece can drive the outer fixing piece to rotate in a reciprocating manner so as to drive the one-way bearing outer ring to rotate in a reciprocating manner and drive the one-way bearing inner ring to output one-way rotation.

In a preferred embodiment, each of the oscillators includes an even number of oscillating members, each of the oscillating members is uniformly distributed around the corresponding fixed end, a stator is disposed between adjacent oscillating members, and at the same time point, two adjacent stators provide magnetic forces in the same direction to the oscillating member located between the two stators.

In a preferred scheme, a plurality of one-way bearings are distributed on the electric device along the axial direction of the central shaft, and each one-way bearing rotates in the same direction towards the output direction of the central shaft so as to drive the central shaft to output one-way rotation.

In a preferred embodiment, the electromotive device further includes a sensing device including a sensor for detecting a swing position of the swinging member and a controller for controlling a current direction of the coil on the stator or the swinging member, the sensor inputting a position signal of the swinging member to the controller, and the controller controlling the current direction according to the position of the swinging member.

In a preferred scheme, the fixed end of the oscillator is provided with an outer fixing piece, the outer fixing piece is connected with two one-way bearings, the two one-way bearings are distributed on the same axis, each one-way bearing comprises an one-way bearing outer ring and an one-way bearing inner ring, the outer fixing piece of the oscillator is connected with the two one-way bearing outer rings, the two one-way bearing inner rings are respectively connected with a first central shaft and a second central shaft, and the outer fixing piece is driven to periodically oscillate and respectively drives the first central shaft and the second central shaft to rotate in a one-way mode through the two one-way bearings.

In a preferred scheme, the rotation directions of the first central shaft and the second central shaft are opposite, and the electric device is provided with two shafts with the same output rotating speed and opposite directions, so that the rotorcraft can omit 4 motors and 4 electronic speed regulators and related circuits, the structure can be simpler, the weight of the aircraft body is greatly reduced, and the power consumption is also obviously reduced.

Drawings

FIG. 1 is a schematic view of a single oscillator with 4 oscillating members;

FIG. 2 is a schematic view of a boss;

FIG. 3 is a schematic view of a single oscillator with 8 oscillating members;

FIG. 4 is a schematic view of a single central shaft with 4 pendulums attached;

FIG. 5 is a schematic view of a single central shaft with 1 wobbler attached thereto

FIG. 6 is a schematic view of a single oscillator with 4 oscillators;

FIG. 7(a-d) schematic diagrams of current direction change driving wobblers to wobble;

FIG. 8 is a schematic view of two stators and an oscillating member;

FIG. 9 is a schematic view of two stators and an oscillating member;

FIG. 10 is a schematic view of two stators and one oscillating piece with the connecting rod long;

FIG. 11 is a schematic view of two stators and an oscillating member;

FIG. 12 is a schematic view of two stators and an oscillating member;

FIG. 13 is a schematic view of a conversion apparatus;

fig. 14 is a schematic view of a stand-alone drone;

figure 15 is a schematic view of a drone;

FIG. 16 is a schematic view of a prior art stepper motor;

FIG. 17 is a schematic view of an electrically powered device;

FIG. 18 is a schematic view of an electrically powered device;

FIG. 19(a-d) is a schematic view of an electrically powered device;

FIG. 20(a-d) is a schematic view of an electrically powered device;

FIG. 21 is a schematic structural view of embodiment 4;

FIG. 22 is a schematic structural view of example 4;

FIG. 23 is a circuit diagram of an electromagnetic clutch according to embodiment 4;

the labels in the figure are: 1-oscillator, 11-oscillator, 12-connecting rod, 13-external fixation, 14-active teeth, 15-passive teeth, 16-curved bar structure, 131-convex part, 311-concave part, 2-stator, 3-one-way bearing, 31-one-way bearing outer ring, 32-one-way bearing inner ring, 4-central shaft, 41-first central shaft, 42-second central shaft, 5-shell, 6-binding post, 7-bearing, 8-sensor, 91-upper rotor, 92-lower rotor; 43-input shaft, 44-input gear, 45 a-first one-way bearing, 46 a-first rotating shaft, 47 a-first electromagnetic clutch, 48 a-second rotating shaft, 49 a-transmission gear a, 45 b-second one-way bearing, 46 b-third rotating shaft, 47 b-second electromagnetic clutch, 48 b-fourth rotating shaft, 49 b-transmission gear b, 50-output gear and 51-output shaft.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

Example 1: as shown in fig. 9, this embodiment discloses an electric apparatus applicable to a stepping motor, which includes two stators 2 and an oscillator 1, the stators 2 being fixed in position, the oscillator 1 being movable relative to the stators, the stators 2 being externally provided with coils that can be energized to form a certain magnetic field at the outer periphery of the stators 2, and a magnetic force can be applied to a magnetic object inside the periphery. Further, the oscillator 1 includes a fixed end and a free end, the fixed end is fixed, the free end is connected to the fixed end through a long arm structure, the free end is rotatable with respect to the fixed end, as shown in fig. 9, the fixed end is around the position of the O point of the figure, the fixed end is provided with an external fixing member 13, the free end is provided with an oscillating member 11, the external fixing member 13 and the oscillating member 11 are connected by a connecting member 12, the oscillating member 11 can be limited to oscillate back and forth along a certain point of the fixed end (the point is the point of the central point O), the oscillating member 11 has magnetism, the oscillating member 11 is located in the magnetic field around the stator so that the stator has magnetic force on the oscillating member 11, the current on the coil of the stator 2 can be controlled to start, change the direction and stop the current on the coil, and further, the stator 2 can start, change the direction and stop the stator through the acting force, Change direction and stop force. The swinging member 11 is caused to swing back and forth about the center point O by the change in the magnetic force. As described above, the connecting rod 12 is connected to the swinging member 11, the outer fixing member 13 is connected to the connecting rod 12, in the preferred embodiment, the connecting rod 12 is a long-armed rod-shaped structure, the outer fixing member 13 is a cylindrical rotating structure, the outer fixing member 13, the connecting rod 12 and the swinging member 11 are fixedly connected to each other, and the outer fixing member 13 is driven to rotate around the central point O in a direction changing direction when the swinging member swings back and forth.

In a further embodiment as shown in fig. 9, a one-way bearing 3 is connected inside the outer fixing member 13, and a central shaft 4 is connected inside the one-way bearing 3, and the one-way bearing can make the reciprocating swing output of the outer fixing member 13 be the rotation of the central shaft 4 along the fixed direction, and the central shaft 4 is an output shaft and also drives the external device to rotate. Therefore, the stator drives the oscillating member 11 to oscillate around the point O by changing the direction of the coil current, and further drives the central shaft 4 to rotate (as described in detail below).

In this preferred embodiment, as shown in fig. 9-11, the oscillating piece 11 and the two stators are annular segments, as shown in fig. 10, since the oscillating member 11 in this embodiment oscillates back and forth, rather than moving circularly, the stator and the oscillating member can be distributed around the center point O with the same radius (radius of the circle in fig. 11), and based on this, the magnetic force of the two stators to the oscillating member 11 is in the direction of the arrow in fig. 11 or in the opposite direction to the direction of the arrow, the direction of the force is the same tangential direction of the circle, so that when the magnitude of the magnetic force on the oscillating member is constant, the magnetic force in the tangential direction can provide the maximum torque to the center O point, and thus to the center shaft 4, and therefore, compared with the stepping motor in the prior art, the stepping motor can provide the maximum torque under the condition of constant current.

In some other embodiments, as shown in fig. 9-11, the coil may be located on the stator, as shown in fig. 8, the coil may also be located on the oscillating member, when the coil is located on the oscillating member, the stator is magnetic, the coil is energized to make the oscillating member magnetic and further subject to the magnetic force of the magnetic field of the stator, according to the direction of energization, the oscillating member is subject to the corresponding attractive or repulsive force of the stator, the direction of the force is also tangential to the arc-shaped moving direction of the oscillating member as shown in fig. 9-10, and the same effect of maximum torque output can be achieved as in the embodiment of fig. 11.

In a preferred embodiment as shown in fig. 8-10, the one-way bearing 3 comprises a one-way bearing inner ring 32 fixedly connected to the outer fixing member 13 and fixedly connected to the central shaft 4, the one-way bearing outer ring is rotatable in two directions, the one-way bearing inner ring is rotatable in only one direction, so that the reciprocating rotation of the outer fixing member 13 to the one-way bearing outer ring is converted into one-way rotation of the one-way bearing inner ring, and in order to fix the outer fixing member 13 and the one-way bearing outer ring 31 such that the rotation of the outer fixing member 13 drives the rotation of the one-way bearing outer ring 31, in a preferred embodiment, as shown in fig. 2, a protrusion 131 is provided inside the outer fixing member 13, and a recess 311 is provided on the one-way bearing outer ring 31 to cooperate with the protrusion 131, and the protrusion enters into the recess to fix the outer fixing. Of course, in other embodiments, the outer fixing member 13 may have a plurality of protrusions and the corresponding one-way bearing outer ring 31 has a plurality of recesses, or in other embodiments, the outer fixing member 13 has recesses and the one-way bearing outer ring 31 has protrusions, and in other embodiments, the one-way bearing outer ring 31 and the outer fixing member 13 may be fixed by other fixing methods. The embodiment shown in fig. 9 is provided with a housing 5 for fixing the position of the stator, the central shaft, etc.

In some other embodiments than the 8-10 embodiments, as shown in fig. 13, the swinging member 11 and the central shaft 4 are fixedly connected (not connected by a one-way bearing or a common bearing), the swinging member 11 swings to drive the central shaft 4 to reciprocate, the central shaft is not circular, in this case, the central shaft can be connected with a one-way clutch bearing, in a specific embodiment, a one-way clutch described in the literature "working principle and application of one-way clutch bearing", bearing 2001, No.9, which is fully incorporated herein, as described in fig. 13 is preferable, the swinging shaft 41 in the drawings is the same shaft as the central shaft 4 or is fixedly connected to be capable of reciprocating with the central shaft 4, the swinging shaft 41 is an input shaft, the rotating shaft 42 is an output shaft, the left and right rotations of the input shaft 41 can make the rotating shaft 42 rotate in one direction, in a particular use, in order to make the rotation constant, the parameters of the various components, in particular the circumference and the number of teeth of the various gears, can be adjusted. In this case, a larger torque can be output by the swing, and the present invention can be applied to a machine requiring a continuous torque output, such as an automobile. In other applications, such as electric saws, sieves, shavers and the like, unidirectional torque output is not required, so that the reciprocating central shaft does not need to be connected with a conversion device such as a one-way clutch bearing or a one-way bearing, and the central shaft can be directly connected with a corresponding component to drive the component to reciprocate.

In order to fix the stator, etc., in a more preferred embodiment, as shown in fig. 5, a housing 5 is connected to the central shaft, the stator 2 is fixed by the housing 5, the central shaft and a sufficient length extend out of the housing 5, and a bearing 7 is provided between the housing and the central shaft, which may be a general two-way bearing, or the central shaft may be fixed by providing other conventional components, so that the central shaft can rotate without the housing being fixed. A terminal 6 is connected to the coil on the stator 2 outside the housing 5 to input a variable current into the coil, thereby allowing a variable magnetic field to be provided around the stator, and fig. 6 is a sectional view looking at the motor apparatus in which the rotational direction of the output center shaft is only the X direction, the outer fixing member is rotatable in the X and Y directions, and the center shaft is also rotatable only in the X direction.

Fig. 7a-d are diagrams showing the position change of the lower oscillating element according to the current direction according to an embodiment, first, as shown in fig. 7a, the current on the stator is according to the direction in the figure, taking the oscillating element directly above in the figure as an example, the stator on the left side of the oscillating element is the left stator, the stator on the right side of the oscillating element is the right stator, at this time, the right stator is the attraction force to the oscillating element, the left stator is the repulsion force to the oscillating element, the oscillating element is located on the rightmost side, and the oscillating element can be in contact with the right stator or can be kept at a fixed distance. In the first step, as shown in fig. 7b, the direction of the current changes, the right constant force acts as a repulsive force to the oscillating member, the left stator acts as an attractive force, the oscillating member oscillates in the direction of X1 in the figure under the action of the left and right stators, and the oscillation to a position (which may be close to the leftmost position, as shown in fig. 7 c) triggers the controller controlling the current to change the current until the oscillating member oscillates to the leftmost position, as shown in fig. 7c, where the oscillating member is subjected to the repulsive force of the left oscillating member and the attractive force of the right oscillating member, and the two forces cause the oscillating member to oscillate in the direction of Y1 in fig. 7d until the oscillating member oscillates to the position of fig. 7a, thereby completing an oscillation cycle. In a more specific embodiment, when the swinging member swings in the direction X1 as shown in fig. 7b, the outer fixing member 13 rotates in the direction X, and thus the central shaft is driven to rotate in the direction X; when the swinging member swings along the Y1 direction as shown in FIG. 7d, the outer fixed member swings along the Y direction, but the central shaft keeps stationary or continues to rotate under the inertia effect due to the action of the unidirectional axial direction. Therefore, the central shaft can only rotate in the X direction in fig. 7b, and the rotation is output. In the motor, in one embodiment, which is a stepping motor, the oscillating member has an angle θ between a rightmost position and a leftmost position, which is a stepping angle, and according to the reciprocating oscillation type of the present invention, a smaller stepping angle than rotation can be realized with respect to a conventional stepping motor.

In order to realize larger torque output of the central shaft, in a more preferable mode, by means of realizing circumferential linkage, specifically, the oscillator is provided with a plurality of oscillating pieces 11 capable of oscillating, that is, one fixed end of the oscillator is connected with a plurality of free ends, each free end is correspondingly provided with one oscillating piece 11, and the oscillating pieces 11 of the plurality of free ends oscillate around the fixed end and simultaneously provide torque for the fixed end. Specifically, as shown in fig. 1, 4 stators and 4 swinging members are uniformly distributed around the central point of the fixed end in this embodiment, a swinging member 11 is disposed between two adjacent stators, the 4 swinging members are fixedly connected to the same outer fixing member 13 through 4 different connecting rods, and the 4 swinging members 11 can output the power provided by each other to the outer fixing member 13 of the fixed end, and further output the power through the central shaft 4. In order to realize the consistent swinging directions of the 4 swinging members, as shown in fig. 1, the adjacent polar directions of the adjacent swinging members are the same, and are both south poles or both south poles, based on which, the number of the swinging members connected by the same external fixing member is usually even, such as 2, 4, 6, 8, etc., of course, it can also be set to be odd, and when the number is odd, at least one adjacent stator is not provided with a swinging member. Fig. 3 shows another embodiment for achieving the oscillation in the axial direction of the linkage. In this embodiment, the number of oscillating pieces is 8, and correspondingly, the number of stators is 8. Further, to achieve greater torque output, in another more preferred embodiment, on the basis of circumferential linkage, axial linkage can be carried out, and a specific mode is a linkage motor as shown in figure 4, in the linkage motor, the central shaft 4 is provided with four linkage motor sets along the axial direction, specifically, four outer fixing pieces are arranged in the axial direction passing through the central shaft, the outer fixing pieces are not shown in figure 4, the connection mode of the outer fixing pieces and the central shaft also adopts the one-way bearing connection mode, that is, the central shaft in this embodiment has 4 one-way bearings distributed in the axial direction, the outer ring of each one-way bearing is connected with a corresponding outer fixed part, each outer fixed part is connected with a plurality of connecting rods 12 and a swinging part 11 connected with the connecting rods 12, and the number and the position of the stators are set according to the number and the position of the swinging part to ensure that the stators can drive the swinging part to swing back and forth. In other embodiments, 23 or more unidirectional bearings and corresponding wobblers may be distributed on the central shaft in the axial direction.

Further, the motor apparatus shown in fig. 4 is provided with a housing 5, the stator 2 is fixed to the housing 5, and a coil whose current is variable is provided outside the stator to provide a magnetic field that can be varied around the stator. The coils of each stator can be fed via a common terminal 6, which allows a synchronous change in the direction of the current in the coils and thus a synchronous oscillation of the oscillating piece. The central shaft 4 is of sufficient length to extend beyond the housing 5 and may be provided with bearings 7 between the housing 5, the central shaft 4 being rotatable with the housing stationary. The total post current can be controlled by the controller to change the current direction.

In the embodiment shown in fig. 4, each outer fixing member can be connected to a connecting rod and the swinging member 11, and only axial linkage is realized; each outer fixed member may be connected to a plurality of connecting rods and the oscillating member 11, which is a dual circumferential and axial linkage in a manner as shown in fig. 1 and 3, enabling greater torque output.

Embodiment 2 this embodiment discloses another specific application of the electric device of embodiment 1, which is a case where two directional torques are used simultaneously, such as in a coaxial multi-rotor aircraft, such as an unmanned plane. Fig. 15 shows a four-axis eight-rotor aircraft in the prior art, each arm is provided with two sets of upper and lower power structures, and as shown in fig. 15, each arm is provided with an upper rotor 91 and a lower rotor 92, so as to balance the counter-torque of each arm, and the rotation directions of the upper and lower rotors are opposite. In the existing device, an upper rotor and a lower rotor on each horn are driven by different power mechanisms respectively, namely, an independent motor is arranged to drive the upper rotor and the lower rotor respectively, so that the structure is complex, the investment cost is high, and the weight of the fuselage is increased. Accordingly, the present embodiment discloses an aircraft powered by the electric device of the present invention. Fig. 14 is a schematic view of the application of the electric device, fig. 14 is a schematic view viewed perpendicular to the direction of fig. 1, in the embodiment shown in fig. 14, the connecting rod 12 is connected with a swinging member (not shown) and an outer fixing member 13, as shown in fig. 14, two one-way bearings 3 are connected in the outer fixing member 13, the two one-way bearings are respectively fixed with different central shafts, in fig. 14, a first central shaft 41 and a second central shaft 42, the first central shaft and the second central shaft respectively drive different upper and lower rotors on the same arm to rotate, in order to make the rotation directions of the upper and lower rotors opposite, the rotation directions of the first central shaft 41 and the second central shaft 42 are opposite, in a specific embodiment, the first central shaft can only rotate along the X direction in fig. 14 to drive the corresponding rotor, the second central shaft can only rotate along the Y direction in fig. 14 to drive the corresponding rotor, this can be adjusted according to the two unidirectional bearings. The two unidirectional bearings of the embodiment of fig. 14 are connected with the same outer fixing member 13, and the unidirectional axial direction adopts the corresponding bearing rotation direction to correspond to the rotation direction of the first central shaft and the second central shaft. Therefore, when the outer fixed member is driven by the oscillating member to rotate along the direction X in fig. 14, the outer fixed member 13 drives the first central shaft 41 to rotate through the right one-way bearing and further drives the corresponding rotor, and at this time, the second central shaft 42 idles under the inertia; when the outer fixed member is driven by the oscillating member to rotate in the direction Y in fig. 14, the outer fixed member 13 drives the second central shaft 42 to rotate through the left one-way bearing, and thus drives the corresponding rotor, and at this time, the first central shaft 41 idles under the inertia. Therefore, the swinging piece can output enough power to enable the first central shaft and the second central shaft to rotate simultaneously through reciprocating swinging, and then the upper rotor wing and the lower rotor wing of the same machine arm can be driven to rotate towards opposite directions through one power structure, so that the weight of the machine body is saved, and the structure is simplified. In one embodiment, the pendulum structure may take the form of the embodiment of FIGS. 8-12 having only one pendulum; in another embodiment capable of outputting larger power, the oscillating member structure adopts the oscillating member structure integrated in the circumferential direction in fig. 1/3/6/7, in this embodiment, the outer fixed member 13 is connected with a plurality of oscillating members through a plurality of connecting rods 12, the plurality of oscillating members oscillate back and forth to drive the outer fixed member 13 to rotate back and forth, and further, larger power is output to the first central shaft and the second central shaft, and further, larger wind power is provided to the upper rotor and the lower rotor. In some cases where more power is required, each central shaft (the first central shaft or the second central shaft) may be connected with a plurality of corresponding outer fixing members 13, such as 2-8, through a plurality of one-way bearings, thereby enabling more power output.

Embodiment 3, as shown in fig. 17, this embodiment discloses an electric device, the oscillator is arranged according to the oscillator described in embodiment 1, and the difference from embodiment 1 is that the oscillator 11 oscillates only around the center point O of the fixed end, no torque output is performed at the fixed end, the fixed point is only used as a supporting point, as shown in fig. 17, the oscillator further includes an active tooth portion 14 connected with the oscillator, specifically, the oscillator and the active tooth portion 14 can be connected through a long rod structure, the active tooth portion is provided with a rack, a passive tooth portion 15 is provided in cooperation with the active tooth portion 14, the active tooth portion is driven by the oscillator 11 to oscillate back and forth along the point O of the fixed end, and further, the passive tooth portion 15 is driven to oscillate back and forth along the direction of the arrow in fig. 17 and perform power output. Fig. 18 shows some other embodiments, in which the oscillating member 11 is directly provided with a rack, and the driven tooth portion is directly matched with the rack on the oscillating member so as to drive the driven tooth portion to oscillate back and forth along the arrow direction through the oscillating member. The oscillating direction of the passive teeth of fig. 17 and 18 is linear, and in some specific applications, the electric device can be applied to electric saws, sieves, shavers and other products requiring linear reciprocating motion.

In a further alternative, as shown in fig. 19a-d, the driven cog 15 is connected to a curved bar structure 16, and the linear reciprocating motion of the driven cog 15 can be converted into rotational motion by the curved bar structure 16. As shown in fig. 19a, the swinging member swings to the leftmost end in the figure, the driven tooth portion 15 is driven to move to the leftmost side by the driving tooth portion 14, and further, as shown in fig. 19b-d, the driving tooth portion 14 drives the driven tooth portion 15 to reciprocate linearly in the left-right direction in the figure, and further, the output shaft of the curved bar structure 16 is driven to rotate, and the output shaft is like the circular wheel structure of the curved bar structure in fig. 19 a. In other embodiments, as shown in fig. 20a-d, the oscillating member 11 is directly provided with a rack, the driven tooth portion 15 is matched with the rack on the oscillating member 11, and further the driven tooth portion is driven to reciprocate linearly by the reciprocating oscillation of the oscillating member, so as to drive the output shaft of the curved rod structure to rotate.

In some specific application modes, the torque converter can be applied to machines needing continuous torque output, such as automobiles.

Example 4: in the field of some numerical control machine tools and the like, after working for a period of time, the output direction of a motor needs to be changed, the output direction of the motor is changed by changing the input current direction of the motor in the existing motor, but in some motors, the current is fixed, and the direction of the current cannot be changed manually. Based on this, this embodiment discloses a motor device, motor device can be selective continuous to a direction output to can change the output direction when needing, can be applied to fields such as digit control machine tool. Specifically, as shown in fig. 21, the motor apparatus of the present embodiment includes the oscillator according to the present invention, in one embodiment, the oscillator has only one oscillating member 11, and in other embodiments, an axial and/or circumferential linkage manner may be adopted, that is, the oscillator includes a plurality of oscillating members, and the specific connection manner of the oscillating members is described in detail in the foregoing embodiments. Continuing with FIG. 21, one or more of the connecting rods 12 is fixedly connected to the input shaft 43, either by the connecting rod and the input shaft being one piece or by screws or the like. As shown in fig. 21, the input shaft performs reciprocating rotation according to the swing of the swing member 11, the input shaft can simultaneously drive the driving shafts or driving discs of the two electromagnetic clutches to rotate around opposite directions, so that the two electromagnetic clutches can output opposite power directions, the two electromagnetic clutches can respectively drive the output shaft 51 to rotate, when necessary, one of the electromagnetic clutches can be disconnected to avoid power transmission, and therefore the other electromagnetic clutch transmits power, the output shaft 51 is driven by the electromagnetic clutch transmitting power, and when the output shaft direction needs to be changed, only the electromagnetic clutch transmitting power needs to be changed. In one specific embodiment, the input shaft is connected with an input gear 44, the input shaft drives the input gear 44 to rotate, the input gear 44 is connected with a first one-way bearing 45a and a second one-way bearing 45b, in one embodiment, the input gear is connected with an outer ring of the first one-way bearing 45a, an inner ring of the first one-way bearing 45a is connected with a first rotating shaft 46a, the input gear swings along with the input shaft, and further drives the outer ring of the first one-way bearing to rotate in a reciprocating mode, and further drives the first rotating shaft to rotate in a one-way mode. Further, as shown in fig. 21, a first electromagnetic clutch 47a is connected to the first rotating shaft 46a, and the first rotating shaft is connected to a driving shaft or a driving disk of the first electromagnetic clutch, a driven shaft or a driven disk of the first electromagnetic clutch is connected to a second rotating shaft 48a, the second rotating shaft is connected to a transmission gear a49a, and the transmission gear a is connected to the output gear 50; similarly, the second one-way bearing 45b is connected to a third rotating shaft 46b, the third rotating shaft 46b is connected to a second electromagnetic clutch 47b, the second electromagnetic clutch is connected to a fourth rotating shaft 48b, the fourth rotating shaft is connected to a transmission gear b49b, and the transmission gear b is connected to an output gear 50. The output gear 50 is connected to the output shaft 51 and can drive the output shaft 51 to rotate.

The first one-way bearing and the second one-way bearing of the present invention can adopt different one-way bearings to make the output directions thereof opposite, and the specific rotating directions are shown in fig. 21-22, in order to make the output shaft 51 rotate around the direction shown in the figure, the second electromagnetic clutch 47b is closed, the first electromagnetic clutch is opened, the reciprocating rotation of the input shaft 43 drives the input gear to rotate in a reciprocating manner, the third rotating shaft 46b rotates according to the direction shown in fig. 21 through the action of the second one-way bearing 45b, and further the fourth rotating shaft 48b rotates according to the direction shown in fig. 21 through the second electromagnetic clutch, and the fourth rotating shaft drives the output shaft 51 to rotate according to the direction shown in fig. 21 through the transmission gear b49b and the output gear 50. At this time, the first rotating shaft 46a, the second rotating shaft 48a, the transmission gear a, and the like are idly rotated.

When it is desired to change the direction of rotation of the output shaft 51, the first electromagnetic clutch is closed and the second electromagnetic clutch is opened, and in one embodiment, the electrical circuit connection of the two electromagnetic clutches is shown in FIG. 23. The output shaft 51 is rotated in the direction of fig. 22 to accommodate the operating requirements, according to the same principles as described above.

In the present embodiment, the oscillator is applied to the motor capable of changing the output direction, on one hand, as described above, for the direction of the magnetic force of the oscillating member perpendicular to the direction of the connecting rod, the magnetic force can provide a larger torque to the input shaft 43 located at the center, so that the motor can output a larger power, and further, the output power can be improved in a circumferential or axial linkage manner. On the other hand, when the direction of the output shaft is changed, the current direction does not need to be changed manually, and only the switch needs to be operated.

The terms appearing in the present application are to be understood as follows:

reciprocating rotation: the fixed shaft makes a variable rotation direction movement, the rotation direction can be changed within one rotation or more than one rotation;

periodic oscillation: the needle is a component which rotates around a specific axis periodically, and each period can complete one or a plurality of turns of rotation and also can rotate by a small angle;

unidirectional rotation: means that one shaft member performs only one-directional rotation along its axis.

While the embodiments of the invention have been described in detail in connection with the accompanying drawings, it is not intended to limit the scope of the invention.

Claims

1. An electrically powered device, comprising:

at least one oscillator (1) comprising a fixed end and at least one free end, wherein the free end is provided with an oscillating piece (11), and the oscillating piece is driven by magnetic force with periodically changed direction so that the oscillating piece (11) can oscillate back and forth around the fixed end;

at least one stator (2) fixed in position, the stator being magnetic so as to have a magnetic field around it, the oscillating element being located in the magnetic field and being subjected to a magnetic force whose direction can be periodically changed;

and the central shaft (4) is connected with the output end of the conversion device and is driven by the output end to rotate in a single direction so as to output power outwards.

2. The electromotive device according to claim 1, wherein the stator is provided with a coil, a current can be passed through the coil to form a magnetic field around the stator, and the direction of the current in the coil can be periodically changed to periodically change the direction of the magnetic force applied to the oscillating member, thereby further driving the oscillating member to periodically oscillate around the corresponding fixed end.

3. The electric device according to claim 1, wherein the stator is a magnet, the oscillating member is provided with an energized coil to make the oscillating member magnetic, and the direction of the coil current on the oscillating member can be periodically changed to periodically change the direction of the magnetic force applied to the oscillating member, thereby further driving the oscillating member to periodically oscillate around the fixed end.

4. An electrically operated device as claimed in any one of claims 2 or 3 wherein the magnetic force applied to the pivotal member is directed perpendicularly to the line joining the free and fixed ends to cause the magnetic force applied to the pivotal member to apply a maximum torque to the fixed end.

5. An electric device according to any one of claims 2 or 3, characterized in that the conversion device comprises a one-way bearing (3), the one-way bearing comprises a one-way bearing outer ring (31) and a one-way bearing inner ring (32) in the one-way axial direction, the one-way bearing inner ring is connected with a central shaft (4), the fixed end of the oscillator is provided with an outer fixed part (13), the outer fixed part is connected with the one-way bearing outer ring (31), and the oscillating part can drive the outer fixed part to rotate in a reciprocating manner so as to drive the one-way bearing outer ring to rotate in a reciprocating manner and drive the one-way bearing inner ring to output.

6. An electrically operated device according to any one of claims 2 or 3, wherein each of said pendulums comprises an even number of pendulums, each of said pendulums being evenly distributed around the respective fixed end, a stator being provided between adjacent pendulums, and two adjacent stators providing the pendulums therebetween with magnetic forces of the same direction at the same point in time.

7. The electric device as claimed in claim 6, wherein the electric device is provided with a plurality of one-way bearings distributed along the axial direction of the central shaft, and each one-way bearing outputs the same rotation in the same direction to the central shaft so as to drive the central shaft to output the one-way rotation.

8. An electric device according to any of claims 2-3, 7, characterized in that the electric device further comprises a sensing device comprising a sensor (8) for detecting the oscillating position of the oscillating member and a controller, the controller controlling the direction of the current in the coil of the stator or the oscillating member, the sensor inputting a position signal of the oscillating member to the controller, said controller controlling the direction of the current in dependence on the position of the oscillating member.

9. An electric device according to claim 2 or 3, characterized in that the fixed end of the oscillator is provided with an outer fixed part (13) to which two one-way bearings are connected, the two one-way bearings are distributed on the same axis, each one-way bearing comprises a one-way bearing outer ring (31) and a one-way bearing inner ring (32), the outer fixed part of the oscillator is connected with the two one-way bearing outer rings, the two one-way bearing inner rings are respectively connected with the first central shaft (41) and the second central shaft (42), and the outer fixed part is driven to periodically oscillate and respectively drive the first central shaft and the second central shaft to rotate unidirectionally through the two one-way bearings.

10. The motorized implement of claim 9, wherein the first central shaft and the second central shaft rotate in opposite directions.