CN220510957U - Linear motor device - Google Patents

Abstract

The application discloses linear motor device, stator module includes iron core and at least one coil, and wherein the iron core includes first magnetic shoe portion and second magnetic shoe portion that are parallel to each other along first direction interval, and the coil is around locating on first magnetic shoe portion, and at least one side of first magnetic shoe portion is provided with second magnetic shoe portion; the rotor assembly comprises a sliding group and a magnet group, the sliding group is arranged at intervals with the iron core in the second direction, the magnet group is arranged on one side of the sliding group facing the iron core, and the sliding group can slide along the first direction; the pendulum rod sets up in the one side that the iron core was kept away from to the slip group, and the coil circular telegram in the stator module makes the iron core have the magnetic pole of constantly changing, has the fixed magnet group of magnetic pole on the mover subassembly simultaneously, utilizes the principle that magnetic pole homopolar repulses, opposite attraction, and the mover subassembly can the back and forth swing, in this application embodiment, has the coil on the first magnetic shoe portion, and does not be equipped with the coil on the second magnetic shoe portion, has increased linear motor's drive power when guaranteeing that the motor is small.

Description

Linear motor device

Technical Field

The application relates to the technical field of motors, in particular to a linear motor device.

Background

The electric tools such as hairdressers and shavers need a linear motor to drive a blade to reciprocate at high frequency to realize the shearing work of hair, the current common linear motor is an electromagnetic vibration motor, the working principle is that a coil is wound on a stator, a magnet is fixed on a rotor, when the coil is electrified, the stator has magnetic poles, the rotor is driven to swing back and forth by attraction or repulsion of different magnetic poles of the magnet, and when the motor stops working, the rotor needs to be reset to the central initial position.

In the process of implementing the present utility model, the inventor finds that at least the following technical problems exist in the prior art:

because electric tools such as hair clippers and shavers generally require a small motor size for convenience in use and portability, it is difficult for the conventional motor to simultaneously satisfy the characteristics of sufficient driving force and small size.

Therefore, a linear motor device having a large driving force and a small size is demanded.

Disclosure of Invention

In view of this, the present application provides a linear motor device to at least solve the technical problems that the motor in the prior art is difficult to simultaneously satisfy the requirements of having enough driving force and small size.

In order to achieve the above purpose, the present application provides the following technical solutions:

the embodiment of the application provides a linear motor device, which comprises:

the stator assembly comprises an iron core and at least one coil, wherein the iron core comprises a first magnetic shoe part and a second magnetic shoe part which are arranged in parallel at intervals along a first direction, the coil is wound on the first magnetic shoe part, and at least one side of the first magnetic shoe part is provided with the second magnetic shoe part;

the rotor assembly comprises a sliding group and a magnet group, the sliding group is arranged at intervals with the iron core in a second direction, the magnet group is arranged on one side of the sliding group, facing the iron core, and the sliding group can slide along the first direction;

the swing rod is arranged at one side of the sliding group, which is far away from the iron core;

the stator assembly can interact with the magnet group to drive the sliding group and the swing rod to reciprocate along the first direction after being electrified.

Optionally, the second magnetic shoe is disposed one and between two of the first magnetic shoes.

Optionally, the number of the first magnetic shoe parts is two, the number of the second magnetic shoe parts is three, and the first magnetic shoe parts are respectively arranged between two adjacent second magnetic shoe parts.

Optionally, the first magnetic shoe is disposed one and between two of the second magnetic shoes.

Optionally, the magnet assembly includes a plurality of magnets arranged at intervals, and two adjacent magnets in the first direction face the stator assembly with opposite magnetic poles.

Optionally, the sliding group includes a first sliding member and a second sliding member, the magnet group includes a first magnet and a second magnet, the first magnet is disposed on the first sliding member, and the second magnet is disposed on the second sliding member;

the stator assembly can drive the first magnet and the second magnet to be close to or far away from each other along the first direction after being electrified.

Optionally, the method further comprises:

the stator assembly is arranged in the mounting cavity;

and the baffle plates are arranged along the second direction, wherein two sides of the mounting seat are connected with one ends of the baffle plates, and the other ends of the baffle plates are connected with two sides of the rotor assembly.

Optionally, the method further comprises:

the limiting parts are arranged at two ends of the sliding group, which are far away from the stator assembly;

and one end of the return spring is in butt joint with the limiting part, and the other end of the return spring is in butt joint with the sliding group and is used for providing a return acting force for the sliding group.

Optionally, the method further comprises:

the external member that has the chamber of holding, first magnetic shoe portion cover is located hold the intracavity, the coil is around locating on the external member.

Optionally, the sliding group includes:

the two ends of the connecting sheet are respectively connected with the end parts of the baffle plates;

the swinging part comprises a first main body part and a second main body part which are mutually perpendicular, the first main body part is attached to the connecting sheet, and the second main body part is penetrated in the through hole;

and the magnet frame is attached to the first main body part, and a mounting groove for accommodating the magnet group is formed in one side, close to the stator assembly, of the magnet frame.

The linear motor device provided by the embodiment of the application has the following beneficial effects:

the linear motor device in the embodiment of the application is provided with a stator assembly, a rotor assembly and a swinging rod arranged on the rotor assembly, wherein the rotor assembly and the stator assembly have interaction force to enable the rotor assembly to drive the swinging rod to swing reciprocally along a first direction to form vibration output, the specific working principle is that a coil in the stator assembly is electrified to enable an iron core to have constantly changing magnetic poles, meanwhile, a magnet group with fixed magnetic poles is arranged on the rotor assembly, the rotor assembly can swing back and forth by utilizing the principle that like poles repel each other and opposite poles attract each other, in the embodiment of the application, a coil is arranged on a first magnetic shoe part, a coil is not arranged on a second magnetic shoe part, and the driving force of the linear motor is increased while the volume of the motor is ensured to be small.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described, and it is possible for a person skilled in the art to obtain other drawings according to these drawings without inventive effort.

Fig. 1 is a schematic structural view of a linear motor device according to an embodiment of the present application;

fig. 2 is an exploded view of a linear motor device according to an embodiment of the present application;

fig. 3 is an exploded view of a linear motor device according to an embodiment of the present disclosure;

FIG. 4 is a schematic diagram of an exploded construction of a mover assembly provided by an embodiment of the present application;

FIG. 5 is a schematic structural view of a stator assembly provided in accordance with another embodiment of the present application;

FIG. 6 is a schematic diagram of the interaction of the core with the magnet assembly;

fig. 7 is another schematic diagram of the interaction of the core with the magnet assembly.

Specific reference numerals are as follows:

the stator assembly 1, the iron core 101, the first magnetic shoe 1011, the second magnetic shoe 1012, the coil 102;

the rotor assembly 2, the slide group 201, the first slide 2011, the second slide 2012, the connecting piece 2013, the through hole 2014, the swinging portion 2015, the first main body portion 215a, the second main body portion 215b, the magnet frame 2016, the mounting groove 2017, the magnet group 202, the first magnet 2021, the second magnet 2022;

a swing rod 3;

a mounting base 4 and a mounting cavity 401;

a baffle 5;

a limit part 6;

a return spring 7;

a kit 8, housing the cavity 801;

a post portion 9;

a coupling 10;

runway aperture 11.

Detailed Description

Features and exemplary embodiments of various aspects of the present application are described in detail below to make the objects, technical solutions and advantages of the present application more apparent, and to further describe the present application in conjunction with the accompanying drawings and the detailed embodiments. It should be understood that the specific embodiments described herein are intended to be illustrative of the application and are not intended to be limiting. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by showing examples of the present application.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.

The electric tools such as hairdressers and shavers need a linear motor to drive a blade to reciprocate at high frequency to realize the shearing work of hair, the current common linear motor is an electromagnetic vibration motor, the working principle is that a coil is wound on a stator, a magnet is fixed on a rotor, when the coil is electrified, the stator has magnetic poles, the rotor is driven to swing back and forth by attraction or repulsion of different magnetic poles of the magnet, and when the motor stops working, the rotor needs to be reset to the central initial position.

At present, electric tools such as hairdressers, shavers and the like generally require a small motor for convenience in use and carrying, and the conventional motor is difficult to simultaneously satisfy the characteristics of sufficient driving force and small volume.

In order to solve the problems in the prior art, the applicant improves the structure of the linear motor device, and embodiments of the present application are further described below.

For a better understanding of the present application, embodiments of the present application are described below in connection with fig. 1 to 7.

The embodiment of the application provides a linear motor device, which comprises a stator assembly 1, and comprises an iron core 101 and at least one coil 102, wherein the iron core 101 comprises a first magnetic shoe 1011 and a second magnetic shoe 1012 which are arranged at intervals in parallel along a first direction, the coil 102 is wound on the first magnetic shoe 1011, and at least one side of the first magnetic shoe 1011 is provided with the second magnetic shoe 1012; the rotor assembly 2 comprises a sliding group 201 and a magnet group 202, wherein the sliding group 201 is arranged at intervals from the iron core 101 in the second direction, the magnet group 202 is arranged on one side of the sliding group 201 facing the iron core 101, and the sliding group 201 can slide along the first direction; the swing rod 3 is arranged on one side of the sliding group 201, which is far away from the iron core 101; after the stator assembly 1 is powered on, the stator assembly can interact with the magnet group 202 to drive the sliding group 201 and the swinging rod 3 to reciprocate along the first direction so as to form high-frequency vibration output.

Referring to fig. 1 to 4, in the present embodiment, a linear motor device is provided with a stator assembly 1, a rotor assembly 2, and a swing rod 3 disposed on the rotor assembly 2, wherein an interaction force exists between the rotor assembly 2 and the stator assembly 1, so that the rotor assembly 2 can drive the swing rod 3 to swing reciprocally along a first direction to form a vibration output, and a specific working principle thereof is as follows: the iron core 101 in the stator assembly 1 is divided into a first magnetic shoe 1011 and a second magnetic shoe 1012, wherein at least one side of the first magnetic shoe 1011 is provided with the second magnetic shoe 1012, and it can be understood that the sum N of the numbers of the first magnetic shoe 1011 and the second magnetic shoe 1012 satisfies the relation n=2n+1, where N is a positive integer, a coil 102 for generating a virtual magnetic pole on the first magnetic shoe 1011 and the second magnetic shoe 1012 by using the electromagnetic induction principle after power is applied is provided on the first magnetic shoe 1011, and a coil 102 is not provided on the second magnetic shoe 1012, thereby reducing the volume of the whole motor. It is to be understood that, in the present embodiment, the winding manner of the coil 102 is not limited, and the virtual magnetic poles of the first magnetic shoe 1011 and the second magnetic shoe 1012 are continuously changed by continuously changing the current direction flowing into the coil 102, and at this time, the mover assembly 2 includes the sliding group 201 and the magnet group 202, the magnet group 202 is disposed on the side of the sliding group 201 facing the iron core 101, and the sliding group 201 can slide along the first direction. As shown in fig. 6 and 7, the magnet group 202 includes a plurality of magnets disposed at intervals, and the number N1 of magnets satisfies the relationship: n1=n-1. The magnets in the magnet set 202 face the ends of the first magnetic shoe 1011 and the second magnetic shoe 1012 and are spaced apart from the ends, the swing rod 3 is fixedly arranged on one side of the sliding set 201 away from the iron core 101, and when the coil 102 is electrified, the first magnetic shoe 1011 and the second magnetic shoe 1012 generate virtual magnetic poles under electromagnetic induction, and the virtual magnetic poles interact with the magnetic poles of the magnet set 202, so that sufficient driving force is provided for the sliding set 201 and the swing rod 3 fixed on the sliding set 201 to reciprocate leftwards and rightwards along the first direction.

The first direction is the X direction in fig. 1, and the second direction is the Y direction in fig. 1.

Specifically, as shown in fig. 6 and 7, when two adjacent magnets in the magnet set 202 face the ends of the first magnetic shoe 1011 and the second magnetic shoe 1012 with opposite magnetic poles, when the coil 102 is energized, virtual magnetic poles with opposite magnetic polarities, such as N and S, are generated on the first magnetic shoe 1011 and the second magnetic shoe 1012, and when the magnetic pole on the end of the first magnetic shoe 1011 is N, the magnets with the same N pole in the magnet set 202 are repelled, and the S pole on the end of the second magnetic shoe 1012 attracts the magnets with the same N pole in the magnet set 202, so that the magnet set 202 moves toward the second magnetic shoe 1012 in the first direction, and when the current direction of the coil 102 is changed, the magnetic poles on the ends of the first magnetic shoe 1011 and the second magnetic shoe 1012 are alternately changed, so that the magnet set 202 also reciprocates in the first direction, and drives the sliding sets 201 and 3 to do the same movement.

In some other embodiments of the present application, the sliding set 201 includes a first sliding member 2011 and a second sliding member 2012, the magnet set 202 includes a first magnet 2021 and a second magnet 2022, the first magnet 2021 is disposed on the first sliding member 2011, the second magnet 2022 is disposed on the second sliding member 2012, and the first magnet 2021 and the second magnet 2022 can be driven to approach or depart from each other along the first direction after the stator assembly 1 is energized.

Referring to fig. 6 and 7, when the magnetic field generated after the coil 102 is energized causes the first magnetic shoe 1011 and the second magnetic shoe 1012 to generate opposite magnetic poles, the first magnet 2021 and the second magnet 2022 generate pushing force under the magnetic interaction to drive the first slider 2011 and the second slider 2012 to approach each other or depart from each other along the first direction.

It will be appreciated that the first magnet 2021 and the second magnet 2022 are disposed with opposite poles facing the ends of the first magnetic shoe 1011 and the second magnetic shoe 1012, for example, the corresponding magnet in the first magnet 2021 is N pole, and the corresponding magnet in the second magnet 2022 is S pole; or, the first magnet 2021 is S-pole, and the second magnet 2022 is N-pole, at this time, after the coil 102 is energized, the first magnet 2021 and the second magnet 2022 respectively drive the first slider 2011 and the second slider 2012 to reciprocate in opposite directions, and finally drive the swing rod 3 on the first slider 2011 and the second slider 2012 to reciprocate in opposite directions, so that the driving force output by the motor is further improved.

In other embodiments, the magnet groups 202 and the sliding groups 201 may be arranged in 3 or more groups, and the arrangement manner may be set and adaptively modified according to the magnet groups 202 and the sliding groups 201 of 2 groups. In other embodiments of the present application, the linear motor apparatus further comprises a mounting seat 4 having a mounting cavity 401, and the stator assembly 1 is disposed in the mounting cavity 401; and the baffle 5 is arranged along the second direction, wherein two sides of the mounting seat 4 are connected with one end of the baffle 5, and the other end of the baffle 5 is connected with two sides of the rotor assembly 2.

Referring to fig. 3, the stator assembly 1 is disposed in the mounting cavity 401 of the mounting seat 4, at this time, the blocking piece 5 is disposed on two sides of the mounting seat 4 along the second direction, the blocking piece 5 may be a metal sheet with a certain elasticity, one end of the blocking piece 5 is connected with the mounting seat 4, the other end is connected with the mover assembly 2, the connection manner may be, but is not limited to, a screw, a riveting or a welding, etc., the blocking piece 5 may support the sliding group 201 to swing along the first direction, and besides, the blocking piece 5 may ensure that the magnet group 202 has a preset interval distance with the ends of the first magnetic shoe 1011 and the second magnetic shoe 1012, so as to ensure the displacement deformation amount of the sliding group 201 in the first direction.

In some other embodiments of the present application, the linear motor apparatus further includes: the limiting parts 6 are arranged at two ends of the sliding group 201 far away from the stator assembly 1; and one end of the return spring 7 is abutted against the limiting part 6, and the other end is abutted against the sliding group 201, so as to provide a return acting force for the sliding group 201.

With continued reference to fig. 2 and 3, in order to improve the resetting capability of the sliding group 201, in this embodiment, by further disposing the limiting portions 6 at two ends of the stator assembly 1, at this time, one end of the reset spring 7 abuts against the limiting portions 6, and the other end abuts against the sliding group 201, when the sliding group 201 is not displaced, the reset spring 7 is in an original length state, when the sliding group 201 moves toward the reset spring 7, the reset spring 7 is in a compressed state, and provides a pushing force for resetting the sliding group 201, and when the sliding group 201 moves toward the opposite direction of the reset spring 7, the reset spring 7 is in a stretched state, and no pulling force is provided for resetting the sliding group 201.

Preferably, the number of the return springs 7 is plural, for example, 2, 4, 6, etc., and is uniformly arranged on both sides of the sliding group 201, respectively, so as to ensure that the same return force is provided to the sliding group 201.

In other embodiments of the present application, the linear motor device further includes a sleeve 8 having a housing cavity 801, the first magnetic shoe 1011 is sleeved in the housing cavity 801, and the coil 102 is wound on the sleeve 8.

Referring to fig. 3, the first magnetic shoe 1011 is sleeved in the accommodating cavity 801 of the sleeve 8, so that the first magnetic shoe 1011 can be protected, and the coil 102 is isolated from the iron core 101.

In other embodiments of the present application, the sliding group 201 includes a connecting piece 2013 provided with a through hole 2014, and two ends of the connecting piece are respectively connected to the ends of the baffle 5; the swinging part 2015 comprises a first main body part 215a and a second main body part 215b which are mutually perpendicular, wherein the first main body part 215a is attached to the connecting sheet 2013, and the second main body part 215b is penetrated into the through hole 2014; the magnet holder 2016 is attached to the first main body 215a, and a mounting groove 2017 for accommodating the magnet set 202 is provided in a side of the magnet holder 2016 close to the stator assembly 1.

Referring to fig. 4, two ends of the connecting piece 2013 are respectively connected with the end portion of the baffle 5, the shape of the connecting piece 2013 may be set according to needs, in this embodiment, the middle portion of the connecting piece 2013 is in a flat plate shape, two ends of the connecting piece are bent vertically upwards and then bent vertically outwards, then bent vertically downwards and fastened on the end portion of the baffle 5, the connecting piece 2013 and the baffle 5 may be fixed by a screw, further, a through hole 2014 is provided on the connecting piece 2013, in this embodiment, the swinging portion 2015 includes a first main body portion 215a and a second main body portion 215b which are perpendicular to each other, the first main body portion 215a and the second main body portion 215b may be integrally formed or fixedly connected by a screw, where the first main body portion 215a is in a flat plate shape, and is attached to a side surface of the connecting piece 2013 facing toward the iron core 101, and the second main body portion 215b is vertically arranged in the middle portion of the first main body portion 215a, and extends out of the connecting piece 2013 through the through hole 2014 of the connecting piece 2013.

In order to facilitate installation of the magnet assembly 202, a mounting groove 2017 for accommodating the magnet assembly 202 is formed in one side of the magnet frame 2016, which is close to the stator assembly 1, and the mounting groove 2017 is rectangular, wherein magnets in the magnet assembly 202 are inlaid in the mounting groove 2017, so that the magnets are prevented from falling off.

In other embodiments of the present application, the first body 215a is provided with a plurality of protruding post portions 9, the post portions 9 extend out of the connecting piece 2013 through the connecting piece 2013, the coupling member 10 is provided between the post portions 9 that can move in opposite directions, the runway holes 11 are symmetrically provided on the coupling member 10, and the post portions 9 are inserted into the runway holes 11 of the coupling member 10 through the connecting piece 2013.

Referring to fig. 2-4, when a plurality of sets of first body portions 215a are provided, the coupling member 10 is sleeved on the boss portion 9 at the same position of two adjacent sets of first body portions 215 a. In other words, the two adjacent convex column parts 9 which can move in opposite directions are inserted into the runway holes 11 of the same connecting piece 10 and can move in the runway holes 11, so that the amplitude of the reverse movement of the two adjacent groups of swinging rod 3 assemblies can be restrained through the connecting piece 10.

Example 1

Referring to fig. 1 to 4, the core 101 of the linear motor device in the embodiment of the present application includes 1 second magnetic shoe 1012 and 2 first magnetic shoe 1011. The first magnetic shoe 1011 is provided with a coil 102, and the second magnetic shoe 1012 is not provided with a coil 102. And the second magnetic shoe 1012 is provided between the 2 first magnetic shoes 1011.

The iron core 101 is in a mountain-shaped structure as a whole. The other structures of the linear motor device are the same as those of the linear motor device in the above embodiment, and will not be described herein.

The iron core 101 is formed by stacking a plurality of silicon steel sheets, in this embodiment, the sum of the numbers of the first magnetic shoe 1011 and the second magnetic shoe 1012 is 3, and accordingly, if the magnet group 202 and the sliding group 201 are both provided as one group, the number of magnets in the magnet group 202 is 2, and the magnetic poles of the 2 magnets are opposite. Referring to fig. 6, two sets of magnet sets 202 and slide sets 201 are taken as an example, the total number of magnets in the first magnet 2021 and the second magnet 2022 is 4, and the 2 magnets in the first magnet 2021 are respectively S-pole and N-pole from left to right, and the 2 magnets in the second magnet 2022 are respectively N-pole and S-pole from left to right (of course, they may also be disposed as S-pole and N-pole from left to right).

The specific working principle of the embodiment is as follows: when current is introduced into the coil 102 in the stator assembly 1, according to the electromagnetic induction principle, N-pole virtual magnetic poles are generated at the ends of the 2 first magnetic shoe portions 1011, at this time, S-pole virtual magnetic poles are generated at the ends of the second magnetic shoe portions 1012 between the 2 first magnetic shoe portions 1011, the magnet in the first magnet 2021 is attracted by the first magnetic shoe portion 1011 of the N-pole and repelled by the second magnetic shoe portion 1012 of the S-pole, so as to drive the first slider 2011 to displace leftwards, and similarly, the magnet in the second magnet 2022 is attracted by the first magnetic shoe portion 1011 of the N-pole and repelled by the second magnetic shoe portion 1012 of the S-pole, so as to drive the second slider 2012 to displace rightwards, and at this time, by changing the direction of the current in the coil 102, the S-pole virtual magnetic poles are generated at the ends of the 2 first magnetic shoe portions 1011, and the virtual magnetic poles at the ends of the second magnetic shoe portions 1012 become N-pole, and likewise according to the principle of like-like attraction and opposite attraction, the first magnet 2021 drives the first slider 2011 to displace the second slider 2012 to leftwards. Finally, the first slider 2011 and the second slider 2012 are reciprocally displaced in the first direction by the continuous change of the direction of the current flowing into the coil 102, thereby outputting high-frequency vibration to the outside. There are three poles on the core 101 in the present embodiment, and a motor having a larger driving force than a motor having two poles.

Example two

Referring to fig. 5, in the linear motor device of the embodiment of the present application, two first magnetic shoes 1011 are provided, three second magnetic shoes 1012 are provided, and the first magnetic shoes are respectively provided between two adjacent second magnetic shoes.

As in the first embodiment, the sum of the numbers of the first magnetic shoe 1011 and the second magnetic shoe 1012 is 5 in the present embodiment, and correspondingly, if the magnet group 202 and the sliding group 201 are both set as one group, the number of magnets in the magnet group 202 is 4, and 2 adjacent magnet poles in the first direction are opposite, please refer to fig. 7, taking the magnet group 202 and the sliding group 201 as two groups as an example, at this time, the number of magnets in the first magnet 2021 and the second magnet 2022 is 8, and 4 magnets in the first magnet 2021 are respectively N-S-N-S from left to right, and 2 magnets in the second magnet 2022 are respectively S-N-S-N from left to right. The specific working principle is as follows: when current is applied to the coil 102 in the stator assembly 1, according to the electromagnetic induction principle, N-pole virtual poles are generated at the ends of the 2 first magnetic shoes 1011, at this time, 3S-pole virtual poles are generated at the ends of the 3 second magnetic shoes 1012, the magnet in the first magnet 2021 is attracted by the first magnetic shoe 1011 of the N-pole and repelled by the second magnetic shoe 1012 of the S-pole, so as to drive the first slider 2011 to displace leftwards, and similarly, the magnet in the second magnet 2022 is attracted by the first magnetic shoe 1011 of the N-pole and repelled by the second magnetic shoe 1012 of the S-pole, so as to drive the second slider 2012 to displace rightwards, and at this time, by changing the direction of the current in the coil 102, the virtual poles of the 2 first magnetic shoes 1011 are generated at the ends of the S-pole respectively, and the virtual poles of the 3 second magnetic shoes 1012 become N-pole, and the first magnet 2021 drives the first slider 2011 to displace leftwards, so as to drive the second slider 2012 to displace leftwards according to the principle of the same and like. Finally, the first slider 2011 and the second slider 2012 are reciprocally displaced in the first direction by the continuous change of the direction of the current flowing into the coil 102, thereby outputting high-frequency vibration to the outside. The first magnetic shoe 1011 and the second magnetic shoe 1012 are sequentially spaced apart from each other, and the driving force for the mover assembly 2 is increased by increasing the number of poles of the iron core 101, and the coil 102 is not provided on the second magnetic shoe 1012, so that the influence of the increase of the poles on the whole volume of the motor can be reduced to the greatest extent.

Example III

Unlike the first embodiment, the iron core 101 of the linear motor device in the present embodiment includes 2 second magnetic shoe portions 1012 and 1 first magnetic shoe portion 1011. The first magnetic shoe 1011 is provided with a coil 102, and the second magnetic shoe 1012 is not provided with a coil 102. And the first magnetic shoe 1011 is provided between the 2 second magnetic shoes 1012.

Accordingly, if the magnet set 202 and the sliding set 201 are both set as one set, the number of magnets in the magnet set 202 is 2, and the magnetic poles of the 2 magnets are opposite, taking the magnet set 202 and the sliding set 201 are both set as two sets as an example, at this time, the number of magnets in the first magnet 2021 and the second magnet 2022 is 4, and the 2 magnets in the first magnet 2021 are respectively S-pole and N-pole from left to right, and the 2 magnets in the second magnet 2022 are respectively N-pole and S-pole from left to right. The specific working principle is as follows: when current is introduced into the coil 102 in the stator assembly 1, virtual magnetic poles of N poles are generated on the end portions of the first magnetic shoe 1011 according to the electromagnetic induction principle, virtual magnetic poles of S poles are generated on the end portions of the 2 second magnetic shoe 1012 on both sides of the first magnetic shoe 1011, the magnet in the first magnet 2021 is attracted by the first magnetic shoe 1011 of N poles and repelled by the second magnetic shoe 1012 of S poles, so as to drive the first slider 2011 to displace leftwards, similarly, the magnet in the second magnet 2022 is attracted by the first magnetic shoe 1011 of N poles and repelled by the second magnetic shoe 1012 of S poles, so as to drive the second slider 2012 to displace rightwards, and at this time, by changing the direction of current in the coil 102, virtual magnetic poles of S poles are generated on the end portions of the first magnetic shoe 1011, and virtual magnetic poles on the end portions of the 2 second magnetic shoe 1012 are all changed into N poles, so that the first magnet 2021 drives the first slider 2011 to drive the second slider 2012 to displace leftwards according to the principle of like-like attraction and opposite-like. Finally, the first slider 2011 and the second slider 2012 are reciprocally displaced in the first direction by the continuous change of the direction of the current flowing into the coil 102, thereby outputting high-frequency vibration to the outside.

It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element. In addition, herein, the magnetic pole properties of the N pole and the S pole described by the first magnetic shoe, the second magnetic shoe, and the magnet refer to the magnetic pole properties of the first magnetic shoe, the second magnetic shoe, and the magnet facing one end of the magnet.

Claims (10)

1. A linear motor device, comprising:

a stator assembly (1) comprising an iron core (101) and at least one coil (102), wherein the iron core (101) comprises a first magnetic shoe part (1011) and a second magnetic shoe part (1012) which are arranged in parallel and at intervals along a first direction, the coil (102) is wound on the first magnetic shoe part (1011), and at least one side of the first magnetic shoe part (1011) is provided with the second magnetic shoe part (1012);

a mover assembly (2) including a sliding group (201) and a magnet group (202), the sliding group (201) being disposed at an interval from the iron core (101) in a second direction, the magnet group (202) being disposed at a side of the sliding group (201) facing the iron core (101), the sliding group (201) being slidable in the first direction;

the swing rod (3) is arranged at one side of the sliding group (201) far away from the iron core (101);

the stator assembly (1) can interact with the magnet group (202) to drive the sliding group (201) and the swinging rod (3) to reciprocate along the first direction after being electrified.

2. The linear motor device according to claim 1, characterized in that the second magnetic shoe (1012) is provided one and between the two first magnetic shoes (1011).

3. The linear motor device according to claim 1, wherein the number of the first magnetic shoe portions (1011) is two, the number of the second magnetic shoe portions (1012) is three, and the first magnetic shoe portions (1011) are respectively provided between the adjacent two second magnetic shoe portions (1012).

4. The linear motor device according to claim 1, characterized in that the first magnetic shoe (1011) is provided one and between two of the second magnetic shoes (1012).

5. Linear motor device according to claim 1, characterized in that the magnet group (202) comprises a number of magnets arranged at intervals, two adjacent magnets facing the stator assembly (1) with opposite poles in the first direction.

6. The linear motor device according to any one of claims 1-5, wherein the sliding group (201) comprises a first sliding part (2011) and a second sliding part (2012), the magnet group (202) comprises a first magnet (2021) and a second magnet (2022), the first magnet (2021) is arranged on the first sliding part (2011), and the second magnet (2022) is arranged on the second sliding part (2012);

the stator assembly (1) is energized to drive the first magnet (2021) and the second magnet (2022) toward or away from each other in the first direction.

7. The linear motor apparatus of claim 6, further comprising:

a mounting seat (4) with a mounting cavity (401), wherein the stator assembly (1) is arranged in the mounting cavity (401);

the baffle (5) is arranged along the second direction, wherein two sides of the mounting seat (4) are connected with one end of the baffle (5), and the other end of the baffle (5) is connected with two sides of the rotor assembly (2).

8. The linear motor apparatus of claim 7, further comprising:

the limiting parts (6) are arranged at two ends of the sliding group (201) far away from the stator assembly (1);

and one end of the return spring (7) is in abutting connection with the limiting part (6), and the other end of the return spring is in abutting connection with the sliding group (201) and is used for providing a return acting force for the sliding group (201).

9. The linear motor apparatus of claim 8, further comprising:

the magnetic shoe comprises a sleeve (8) with a containing cavity (801), wherein the first magnetic shoe part (1011) is sleeved in the containing cavity (801), and the coil (102) is wound on the sleeve (8).

10. The linear motor device according to claim 7, wherein the sliding group (201) comprises:

a connecting sheet (2013) provided with a through hole (2014), and two ends of the connecting sheet are respectively connected with the end parts of the baffle sheet (5);

a swinging part (2015) including a first body part (215 a) and a second body part (215 b) which are mutually perpendicular, wherein the first body part (215 a) is attached to the connecting piece (2013), and the second body part (215 b) is penetrated into the through hole (2014);

and a magnet frame (2016) attached to the first main body (215 a), wherein a mounting groove (2017) for accommodating the magnet assembly (202) is formed in one side of the magnet frame (2016) close to the stator assembly (1).