Magnetic coupling type reciprocating rotation motor

Abstract

The utility model relates to a magnetic coupling type reciprocating rotation motor, which comprises a shell, an output shaft, a coil winding, a permanent magnet and an elastic piece. A mounting cavity is formed in the shell, and the output shaft is rotationally mounted on the shell and extends into the mounting cavity. And the coil winding is arranged in the mounting cavity and is connected with a power supply. The permanent magnet is located in the installation cavity and connected to the output shaft. The elastic piece is located in the mounting cavity and comprises a first connecting part and a vibrating part, the first connecting part is mounted on the output shaft, the vibrating part extends in the direction perpendicular to the axial direction of the output shaft, and the vibrating part is connected with the shell. The length of the vibration part of the elastic piece is reduced, so that the vibration time of each time is shorter, the amplitude adjustment of the vibration part is easier to implement, the aftershock of the vibration part is prevented from hindering the rotation of the output shaft, the vibration frequency of the vibration part is easier to adjust to be matched with the rotation frequency of the output shaft, and the purpose of reducing energy consumption is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a magnetic coupling reciprocating rotation motor. Background Art

[0002] Existing reciprocating rotation motors operate on the principle of electromagnetic drive. Generally, they have a housing, a coil winding and a permanent magnet located inside the housing. The coil winding serves as the stator, and the permanent magnet serves as the rotor. An output shaft is connected to the permanent magnet. When the coil winding is energized, the generated magnetic field changes periodically with the current direction, and the magnetism generated by its magnetic poles changes periodically.

[0003] However, the rotation of the output shaft of the existing reciprocating rotation motor completely relies on the current to do work, consuming a large amount of electricity and being unfavorable for endurance. Summary of the Utility Model

[0004] In view of this, the utility model provides a magnetic coupling reciprocating rotation motor to solve the problem of large power consumption of motors in the prior art.

[0005] To achieve one or part or all of the above purposes or other purposes, the utility model proposes:

[0006] A magnetic coupling reciprocating rotation motor, comprising:

[0007] A housing, with an installation cavity provided inside the housing;

[0008] An output shaft, rotatably installed on the housing, and the output shaft extends into the installation cavity;

[0009] A coil winding, arranged in the installation cavity, and the coil winding is set to be powered on;

[0010] A permanent magnet, located in the installation cavity, and the permanent magnet is connected to the output shaft;

[0011] An elastic member, located in the installation cavity, the elastic member includes a first connection portion and a vibration portion. The first connection portion is installed on the output shaft, the vibration portion extends along a direction perpendicular to the axial direction of the output shaft, and the vibration portion is connected to the housing.

[0012] Preferably, the vibration portion extends linearly along a direction perpendicular to the axial direction of the output shaft.

[0013] Preferably, the elastic member further includes a second connection portion. The first connection portion and the vibration portion together form a sheet-like structure. The second connection portion is stepwise connected to the side of the vibration portion away from the first connection portion, and the second connection portion is connected to the housing.

[0014] Preferably, an installation groove is formed on the output shaft, and the first connecting portion passes through the installation groove, so that the connection portion between the first connecting portion and the output shaft coincides with the axis of the output shaft. The elastic member has two vibration portions and two second connecting portions, and the two vibration portions and the two second connecting portions are symmetrically arranged about the axis of the output shaft.

[0015] Preferably, the housing includes:

[0016] An outer shell, with an installation cavity arranged inside the outer shell;

[0017] A partition plate, located in the installation cavity. The partition plate and the outer shell are integrally formed, and the partition plate divides the installation cavity into a receiving cavity and a rotating cavity. The coil winding is arranged in the receiving cavity, the permanent magnet is arranged in the rotating cavity, and the output shaft extends into the rotating cavity and is connected to the permanent magnet.

[0018] Preferably, one side of the rotating cavity away from the partition plate is open, and the housing further includes:

[0019] An inner bracket, installed in the rotating cavity. The vibration portion is connected to the inner bracket, and the permanent magnet is located between the partition plate and the inner bracket;

[0020] An end cover, installed at the opening of the rotating cavity, and the inner bracket abuts against the end cover. After passing through the end cover and the inner bracket in sequence, the output shaft is connected to the permanent magnet.

[0021] Preferably, a sliding groove is formed on the inner wall of the rotating cavity. The opening direction of the sliding groove is parallel to the axial direction of the output shaft, and the sliding groove extends to the opening. A sliding boss is arranged on the inner bracket, and the sliding boss extends into the sliding groove.

[0022] Preferably, the inner bracket includes:

[0023] A frame body, with the vibration portion connected to the frame body;

[0024] A bearing, installed on the frame body and sleeved on the output shaft.

[0025] Preferably, the frame body includes two clamping portions and a third connecting portion connecting the two clamping portions. The sliding boss is arranged on the third connecting portion. The inner bracket includes two bearings, and the two bearings are respectively clamped on the two clamping portions. The vibration portion is connected to the third connecting portion, and the elastic member is located between the two clamping portions.

[0026] Preferably, the magnetic coupling type reciprocating rotation motor further includes a first locking screw and a second locking screw. The permanent magnet is fixed on the output shaft through the first locking screw, and the first connecting portion is fixed on the output shaft through the second locking screw.

[0027] Implementing the embodiments of the present utility model will have the following beneficial effects:

[0028] After adopting the above-mentioned magnetically coupled reciprocating motor, by setting an elastic member, the reciprocating vibration process of the elastic member is utilized to assist in driving the reciprocating rotation of the output shaft, reducing the current power consumption of the input coil winding, and achieving the purpose of reducing energy consumption. In addition, by shortening the length of the vibrating part of the elastic member, the time of each vibration is shorter, making it easier to adjust the amplitude of the vibrating part, reducing the aftershock effect of the vibrating part, and making it easier to adjust the vibration frequency of the vibrating part to match the number of rotations of the output shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0030] Figure 1 It is a schematic diagram of the overall external shape of an embodiment.

[0031] Figure 2 It is a schematic diagram of the partially cut-away structure of an embodiment Figure 1 ;

[0032] Figure 3 It is a schematic diagram of the partially cut-away structure of an embodiment Figure 2 ;

[0033] Figure 4 It is a schematic diagram of the cross-sectional structure of the housing in an embodiment;

[0034] Figure 5 It is a schematic diagram of the exploded assembly relationship among the end cap, the internal bracket, the output shaft, the permanent magnet, and the elastic member in an embodiment;

[0035] Figure 6 It is a schematic diagram of the connection structure among the end cap, the internal bracket, the output shaft, the permanent magnet, and the elastic member in an embodiment;

[0036] Figure 7 It is a schematic diagram of the structure of the elastic member in an embodiment;

[0037] Figure 8 It is a schematic diagram of the swinging process of the permanent magnet in an embodiment;

[0038] Figure 9 It is a schematic diagram of the current change in the coil winding in an embodiment;

[0039] Figure 10 It is a schematic diagram of the swinging process of the permanent magnet in another embodiment;

[0040] Figure 11 In another embodiment, it is a schematic diagram of the current change in the coil winding;

[0041] Wherein:

[0042] Housing 1, installation cavity 10, outer shell 11, partition 12, internal support 13, end cover 14, accommodation cavity 101, rotation cavity 102, opening 1021, sliding groove 1022, sliding boss 1301, frame body 131, bearing 132, clamping portion 1311, third connecting portion 1312,

[0043] Output shaft 2, installation groove 21;

[0044] Coil winding 3, copper coil 31, iron core 32, winding group 311, winding end 312;

[0045] Permanent magnet 4, magnetic pole end 41;

[0046] Elastic member 5, first connecting portion 51, vibration portion 52, second connecting portion 53, stepped connecting structure 54;

[0047] First locking screw 6;

[0048] Second locking screw 7. Detailed implementation manners

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this utility model belongs; the terms used in the description of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this utility model; the terms "including" and "having" and any variations thereof in the description and claims of this utility model and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the description and claims of this utility model or the above drawings are used to distinguish different objects and not to describe a specific order.

[0050] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this utility model. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0051] In order to enable those skilled in the art of this technology to better understand the solution of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the drawings.

[0052] Refer to the appendix Figures 1 to 11 , the present utility model provides a magnetic coupling reciprocating rotation motor, which includes a housing 1, an output shaft 2, a coil winding 3, a permanent magnet 4 and an elastic member 5.

[0053] Among them, an installation cavity 10 is provided in the housing 1. The output shaft 2 is rotatably installed on the housing 1, and the output shaft 2 extends into the installation cavity 10. The coil winding 3 is arranged in the installation cavity 10. The coil winding 3 is composed of a copper coil 31 and an iron core 32. The copper coil 31 includes two winding groups 311. The iron core 32 has two mutually parallel winding ends 312. Each winding group 311 is respectively wound on one winding end 312. When the copper coil 31 is energized, the magnetic poles generated by the two winding groups 311 are opposite.

[0054] The permanent magnet 4 is located in the installation cavity 10. The permanent magnet 4 is fixed on the output shaft 2. The output shaft 2 can only rotate circumferentially, so that the output shaft 2 can rotate reciprocally with the reciprocating swing of the permanent magnet 4, so that the motor can be applied to an electric toothbrush to drive the toothbrush head of the electric toothbrush to make a reciprocating swing.

[0055] Specifically, the permanent magnet 4 has two magnetic poles 41 with opposite magnetic polarities. The two magnetic poles 41 are respectively arranged close to the two winding groups 311. When a positive current is passed through the copper coil 31, the magnetism generated by each winding group 311 is opposite to the magnetism of the corresponding magnetic pole 41, so that the magnetic pole 41 is repelled and away from the winding group 311; conversely, when a reverse current is passed through the copper coil 31, the magnetism generated by each winding group 311 is the same as the magnetism of the corresponding magnetic pole 41, so that the magnetic pole 41 is attracted and close to the winding group 311.

[0056] The elastic member 5 is located within the installation cavity 10. The elastic member 5 includes an integrally formed first connection portion 51 and a vibration portion 52. The first connection portion 51 is fixedly installed on the output shaft 2. The vibration portion 52 extends in a direction perpendicular to the axial direction of the output shaft 2, and one end of the vibration portion 52 away from the first connection portion 51 is connected to the housing 1. The forward rotation of the output shaft 2 correspondingly causes the elastic member 5 to generate a forward elastic deformation. If the input current to the copper coil 31 is stopped at this time, the elastic member 5 releases its elastic potential energy, causing the elastic member 5 to move rapidly in the reverse direction and generate a reverse elastic deformation with a weakened amplitude. Then, the reverse elastic deformation releases its elastic potential energy again, causing the elastic member 5 to generate a forward elastic deformation with a further weakened amplitude until the elastic potential energy of the elastic member 5 is completely consumed and it returns to its initial position. During this process, the elastic member 5 undergoes a reciprocating vibration. This motor can utilize the reciprocating vibration process of the elastic member 5 to provide additional power for the reciprocating movement of the output shaft 2, and the work done by the current input to the copper coil only needs to ensure that the amplitude of each vibration of the elastic member 5 is the same or nearly the same, significantly reducing the work done by the current and achieving the purpose of energy conservation. In addition, the main deformation part of the elastic member 5 is concentrated at the vibration portion 52. The vibration portion 52 is linearly extended to shorten the length of the vibration portion 52, reduce the vibration duration of each vibration of the vibration portion 52, make it easier to adjust the amplitude of the vibration portion 52, reduce the aftershock effect of the vibration portion 52, and make it easier to adjust the vibration frequency of the vibration portion 52 to match the rotation speed of the output shaft 2.

[0057] Refer to the appendix Figure 8 , the permanent magnet 4 takes the position where the central connection line of its two magnetic poles 41 is parallel to the central connection line of the two winding groups 311 as the initial position.

[0058] Specifically, when a forward current is passed through the copper coil 31, the magnetism generated by each winding group 311 is respectively opposite to the magnetism of the corresponding magnetic pole 41, causing the magnetic pole 41 to be repelled and swing forward away from the winding group 311, thereby driving the output shaft 2 to rotate forward. At the same time, the elastic member 5 is driven to generate an elastic deformation and store elastic potential energy. When the repulsive torque generated by the winding group 311 on the magnetic pole 41 is equal to the elastic torque of the elastic member 5 on the output shaft 2, the angular acceleration of the forward rotation of the output shaft 2 is zero. Then, a reverse current is passed through the copper coil 31. The magnetism generated by each winding group 311 is respectively the same as the magnetism of the corresponding magnetic pole 41, causing the magnetic pole 41 to be attracted by the winding group 311. The magnetic pole 41 will swing backward close to the winding group 311, thereby driving the output shaft 2 to rotate backward. During this process, the elastic member 5 releases its elastic potential energy and is used to assist the output shaft 2 in rotating backward. Correspondingly, it can also assist in pushing the magnetic pole 41 to swing backward, driving the permanent magnet 4 to return to its initial position.

[0059] After the permanent magnet 4 returns to the initial position, a forward current is applied to the copper coil 31 again, and the winding group 311 generates a repulsive force on the magnetic pole end 41 again. Under the combined influence of the repulsive force and the moving inertia, the magnetic pole end 41 crosses the initial position, causing the output shaft 2 to continue to rotate in the reverse direction. At the same time, the elastic member 5 is driven to generate an elastic deformation in the opposite direction. Until the repulsive force moment generated by the winding group 311 on the magnetic pole end 41 is equal to the elastic force moment generated by the elastic member 5, the angular acceleration of the output shaft 2 rotating in the reverse direction is zero. Then, a reverse current is applied to the copper coil 31 again, and the winding group 311 generates an attractive force on the magnetic pole end 41 again. The corresponding elastic member 5 begins to release elastic potential energy. The magnetic pole end 41 is driven to rotate forward under the action of the attractive force and the elastic force of the elastic member 5, that is, the output shaft 2 rotates forward again. Until the permanent magnet 4 returns to the initial position, a motion cycle is completed. According to the above motion principle, by continuously applying forward current and reverse current, the output shaft 2 can be made to perform reciprocating rotation.

[0060] In this embodiment, the changes of the forward current and the reverse current are as shown in the appendix Figure 9 as shown, where T is the current application time and I is the current intensity.

[0061] It should be noted that the forward and reverse rotations of the output shaft 2 only represent two different rotation directions, and the forward current and the reverse current only represent two different current input directions.

[0062] In this magnetic coupling type reciprocating rotation motor, since the vibration part 52 is set with a short length and a short vibration time, it is more convenient to adjust the reciprocating frequency of the output shaft 2 and reduce the influence of the aftershock of the vibration part 52 on the rotation of the output shaft 2. Moreover, by adjusting the time of applying the forward current and the reverse current, after making the reciprocating motion frequency of the output shaft 2 close to or consistent with the vibration frequency of the vibration part 52, the work done ratio of the elastic member 5 during the reciprocating rotation of the output shaft 2 can be increased, and the current magnitude required for the coil winding 3 can be greatly reduced, thereby greatly reducing the power consumption of this magnetic coupling type reciprocating rotation motor.

[0063] Among them, by changing the magnitude of the current applied to the coil sleeve group, the magnitude of the magnetic force generated by the winding group 311 can be changed. When the current working time is unchanged, the maximum rotation angle of the output shaft 2 can be adjusted; and by adjusting the change frequency of the current direction in the coil sleeve group, that is, adjusting the current working time in each direction, the reciprocating motion frequency of the output shaft 2 can be affected. Then, according to different usage scenarios, elastic members 5 with different strengths can be designed correspondingly, so that the elastic force provided by the elastic member 5 meets the usage requirements. For example, the strength of the elastic member 5 can be adjusted by changing factors such as the thickness, width, and length of the elastic member 5.

[0064] Furthermore, to facilitate the manufacturer to adjust the strength of the elastic member 5 according to different sizes of the rotation motor, in this embodiment, it is achieved by adjusting the length of the vibration part 52. Refer to the appendixFigure 7 , specifically, the elastic member 5 further includes a second connecting portion 53. The first connecting portion 51 and the vibrating portion 52 together form a sheet-like structure. The second connecting portion 53 is stepwise connected to the side of the vibrating portion 52 away from the first connecting portion 51, and the second connecting portion 53 is connected to the housing 1. Among them, the first connecting portion 51, the vibrating portion 52, and the second connecting portion 53 are integrally formed. A bend is made between the vibrating portion 52 and the second connecting portion 53 to form a stepped connecting structure 54. The stepped connecting structure 54 has a certain effect of eliminating the transmission of vibration, which can reduce the vibration transmitted from the vibrating portion 52 to the second connecting portion 53, so that the main deformation part of the elastic member 5 still focuses on the vibrating portion 52 rather than the second connecting portion 53. The prerequisite for this setting is that the length of the vibrating portion 52 needs to be greater than the length of the second connecting portion 53. The manufacturer can adjust the position of the stepped connecting structure 54 and correspondingly adjust the length of the vibrating portion 52, and adjust the maximum elastic force that the vibrating portion 52 can provide in this way.

[0065] Furthermore, an installation groove 21 is provided on the output shaft 2. The first connecting portion 51 passes through the installation groove 21, so that the connection between the first connecting portion 21 and the output shaft 2 coincides with the axis of the output shaft 2, so that the fulcrum of the elastic force generated by the vibrating portion 52 on the output shaft 2 is on the axis of the output shaft 2, reducing the radial shear force received by the output shaft 2. The elastic member 5 has two vibrating portions 52 and two second connecting portions 53. The two vibrating portions 52 and the two second connecting portions 53 are centrosymmetrically arranged with the axis of the output shaft 2 as the center, improving the magnitude of the elastic force that the entire elastic member 5 can provide.

[0066] Furthermore, referring to the appendix Figures 2 to 6 , the housing 1 includes an outer shell 11, a partition 12, an internal support 13, and an end cap 14.

[0067] Among them, the installation cavity 10 is arranged inside the outer shell 11. The partition 12 is located inside the installation cavity 10, and the partition 12 divides the installation cavity 10 into a receiving cavity 101 and a rotating cavity 102. The coil winding 3 is arranged inside the receiving cavity 101, the permanent magnet 4 is arranged inside the rotating cavity 102, and the output shaft 2 extends into the rotating cavity 102 and is connected to the permanent magnet 4.

[0068] The inner bracket 13 is installed in the rotating cavity 102, the vibrating part 52 is connected to the inner bracket 13, and the permanent magnet 4 is located between the partition 12 and the inner bracket 13. An opening 1021 is provided on one side of the rotating cavity 102 away from the partition 12. The end cover 14 is installed at the opening 1021 of the rotating cavity 102, and the inner bracket 13 is abutted against the end cover 14. The output shaft 2 is connected to the permanent magnet 4 after passing through the end cover 14 and the inner bracket 13 in sequence. A sliding groove 1022 is provided on the inner wall of the rotating cavity 102. The opening direction of the sliding groove 1022 is parallel to the axial direction of the output shaft 2. The sliding groove 1022 extends and communicates with the opening 1021. A sliding boss 1301 is provided on the inner bracket 13. The sliding boss 1301 extends into the sliding groove 1022, and the sliding boss 1301 abuts against the end face of the sliding groove 1022 close to the partition 12. Among them, the setting of the sliding boss 1301 and the sliding groove 1022 is mainly used to prevent the inner bracket 13 from rotating together with the output shaft 2.

[0069] In this embodiment, the partition 12 mainly functions to waterproof the coil set, preventing external moisture from entering the accommodation cavity 101 through the opening 1021 and soaking the coil winding 3. In addition, the provided inner bracket 13 facilitates the installation of the elastic piece and the permanent magnet 4. The specific installation steps are as follows:

[0070] Step 1: Pass the output shaft 2 through the inner bracket 13;

[0071] Step 2: Connect the elastic member 5 to the output shaft 2 and the inner bracket 13;

[0072] Step 3: Install the permanent magnet 4 on the output shaft 2;

[0073] Step 4: Move the inner bracket 13 to the opening 1021, and drive the sliding boss 1301 to correspond to the position of the sliding groove 1022, and push the inner bracket 13 into the rotating cavity 102 along the sliding groove 1022;

[0074] Step 5: Install the end cover 14 at the opening 1021, and press the end cover 14 against the inner bracket 13.

[0075] The rotation of the output shaft 2 is driven by the magnetic force principle. The output shaft 2 does not need to contact the coil winding 3. Therefore, the partition 12 is used to separate the output shaft 2 and the coil winding 3. When external moisture seeps into the housing 1 along the output shaft 2, the partition 12 can prevent the moisture from contacting the coil winding 3, that is, prevent the energized coil winding 3 from being damaged by water. In addition, the entire outer shell 11 and the partition 12 are integrally formed. The outer shell 11 does not need to be disassembled into two parts for installation. There is no installation gap on the outer side wall of the outer shell 11, and external moisture cannot bypass the partition 12 and invade the accommodation cavity 101 from the installation gap, reducing the possibility of external moisture invading the accommodation cavity 101.

[0076] Further, in order to reduce the rotational friction loss of the output shaft 2, in this embodiment, the inner bracket 13 is divided into a frame body 131 and a bearing 132, and the second connecting portion 53 is fixedly connected to the frame body 131 by means of press fitting, screwing, etc. The bearing 132 is installed on the frame body 131, and the bearing 132 is sleeved on the output shaft 2, and the friction between the output shaft 2 and the housing 1 is reduced by using the bearing 132.

[0077] Specifically, the frame body 131 includes two clamping portions 1311 and a third connecting portion 1312 connecting the two clamping portions 1311, and the sliding boss 1301 is disposed on the third connecting portion 1312. There are two bearings 132, as shown in the appendix Figure 5 and 6 shown, the two bearings 132 are respectively clamped on the two clamping portions 1311, the second connecting portion 53 is connected to the third connecting portion 1312, and at the same time, the elastic member 5 is also located between the two clamping portions 1311. The arrangement of the two bearings 132 is mainly to improve the supporting ability of the output shaft 2, avoid radial vibration and offset of the output shaft 2, thereby improving the stability and service life of the rotating motor.

[0078] In addition, the magnetic coupling reciprocating rotating motor further includes a first locking screw 6 and a second locking screw 7. The permanent magnet 4 is fixed on the output shaft 2 by the first locking screw 6, and the first connecting portion 51 is fixed on the output shaft 2 by the second locking screw 7. In other embodiments, they can also be connected by means of pins, welding, etc.

[0079] In other embodiments, the copper coil 31 can also be only supplied with a unidirectional current, and the change of the unidirectional current is as shown in the appendix Figure 11 shown, where t is the current input time and i is the current intensity. Refer to the appendix Figure 10 , and the specific working process is as follows:

[0080] After a unidirectional current is supplied to the copper coil 31, the magnetism generated by each winding group 311 is opposite to the magnetism of the corresponding magnetic pole end 41, so that the magnetic pole end 41 is repelled and swings forward away from the winding group 311, thereby driving the output shaft 2 to rotate forward, and at the same time, the elastic member 5 is driven to generate elastic deformation and store elastic potential energy. When the repulsive torque generated by the winding group 311 on the magnetic pole end 41 is equal to the elastic torque of the elastic member 5 on the output shaft 2, the angular acceleration of the forward rotation of the output shaft 2 is zero. Then, the input of the unidirectional current is stopped, and the elastic member 5 releases the elastic potential energy and drives the output shaft 2 to rotate reversely. The corresponding magnetic pole end 41 will swing backward close to the winding group 311, driving the permanent magnet 4 to return to the initial position.

[0081] After the permanent magnet 4 returns to the initial position, the one-way current is applied to the copper coil 31 again. The winding group 311 generates a repulsive force on the magnetic pole end 41 again. Under the combined influence of the repulsive force and the movement inertia, the magnetic pole end 41 crosses the initial position, causing the output shaft 2 to continue to rotate in the reverse direction. At the same time, the elastic member 5 is driven to generate an elastic deformation in the opposite direction. Until the repulsive force moment generated by the winding group 311 on the magnetic pole end 41 is equal to the elastic force moment generated by the elastic member 5, the angular acceleration of the output shaft 2 rotating in the reverse direction is zero. Stop applying the one-way current again, and the elastic member 5 starts to release the elastic potential energy. The output shaft 2 is driven to rotate in the forward direction under the elastic force of the elastic member 5, that is, the magnetic pole end 41 rotates in the forward direction again. Until the permanent magnet 4 returns to the initial position, a motion cycle is completed.

[0082] Compared with the previous embodiment, this other embodiment is different in that it does not require changing the direction of the current, the overall working duration of the current is reduced, and the power consumption is reduced. However, the requirements for the elastic member 5 used in this other embodiment are increased.

[0083] Obviously, the embodiments described above are only a part of the embodiments of the present invention, rather than all the embodiments. The accompanying drawings show the preferred embodiments of the present invention, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing specific embodiments, or perform equivalent replacements for some of the technical features. Any equivalent structure using the specification and drawings of the present invention, directly or indirectly applied to other related technical fields, is equally within the scope of the patent protection of the present invention.

Claims

1. A magnetically coupled reciprocating motor, characterized in that: include: A housing, wherein a mounting cavity is provided in the housing; An output shaft, the output shaft is rotatably mounted on the housing and extends into the mounting cavity; A coil winding, the coil winding being arranged in the installation cavity, and the coil winding being connected to a power supply; A permanent magnet, the permanent magnet is located in the mounting cavity and the permanent magnet is connected to the output shaft; An elastic member, wherein the elastic member is located in the mounting cavity, and the elastic member comprises a first connecting portion and a vibrating portion, wherein the first connecting portion is mounted on the output shaft, the vibrating portion is extended in a direction perpendicular to the axial direction of the output shaft, and the vibrating portion is connected to the shell.

2. A magnetically coupled reciprocating motor according to claim 1, characterized in that: The vibration part is linearly extended along a direction perpendicular to the axial direction of the output shaft.

3. A magnetically coupled reciprocating motor according to claim 1, characterized in that: The elastic member further includes a second connecting portion, the first connecting portion and the vibration portion together form a sheet-like structure, the second connecting portion is connected in a stepped manner to a side of the vibration portion away from the first connecting portion, and the second connecting portion is connected to the housing.

4. A magnetically coupled reciprocating motor according to claim 3, characterized in that: The output shaft is provided with a mounting groove, and the first connecting part passes through the mounting groove, so that the connection between the first connecting part and the output shaft is arranged to coincide with the axis of the output shaft, and the elastic member has two vibrating parts and two second connecting parts, and the two vibrating parts and the two second connecting parts are centrally symmetrically arranged with the axis of the output shaft as the center.

5. The magnetically coupled reciprocating motor according to claim 1, characterized in that: The housing comprises: A housing, wherein the mounting cavity is disposed in the housing; A partition is located in the installation cavity, the partition and the shell are integrally formed, and the partition divides the installation cavity into a receiving cavity and a rotating cavity, the coil winding is arranged in the receiving cavity, the permanent magnet is arranged in the rotating cavity, and the output shaft extends into the rotating cavity and is connected to the permanent magnet.

6. A magnetically coupled reciprocating motor according to claim 5, characterized in that: The rotating chamber is opened on one side away from the partition, and the shell further comprises: An internal bracket, wherein the internal bracket is installed in the rotating cavity, the vibrating part is connected to the internal bracket, and the permanent magnet is located between the partition plate and the internal bracket; The end cover is installed at the opening of the rotating cavity, and the internal bracket is abutted against the end cover. The output shaft is connected with the permanent magnet after penetrating the end cover and the internal bracket in sequence.

7. A magnetically coupled reciprocating motor according to claim 6, characterized in that: A sliding groove is arranged on the inner wall of the rotating cavity, the opening direction of the sliding groove is parallel to the axial direction of the output shaft, the sliding groove extends to connect to the opening, and a sliding boss is arranged on the internal bracket, and the sliding boss extends into the sliding groove.

8. A magnetically coupled reciprocating motor according to claim 7, characterized in that: The internal support comprises: A frame, wherein the vibrating part is connected to the frame; A bearing is installed on the frame, and the bearing is sleeved on the output shaft.

9. A magnetically coupled reciprocating motor according to claim 8, characterized in that: The frame body includes two clamping parts and a third connecting part connecting the two clamping parts, the sliding boss is arranged on the third connecting part, the internal bracket includes two bearings, the two bearings are respectively embedded in the two clamping parts, the vibration part is connected to the third connecting part, and the elastic member is located between the two clamping parts.

10. The magnetically coupled reciprocating motor according to claim 1, characterized in that: It also includes a first locking screw and a second locking screw, the permanent magnet is fixed to the output shaft by the first locking screw, and the first connecting portion is fixed to the output shaft by the second locking screw.

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