Motor and electronic device

Abstract

A motor (100) and an electronic device. The motor (100) comprises a stator (2) and an eccentric mover (1); the stator (2) comprises a coil assembly, and the coil assembly forms a cavity; the eccentric mover (1) comprises a rotating shaft (12) and an eccentric wheel (11) sleeved on the rotating shaft (12), the eccentric wheel (11) comprises a magnetic assembly (112), and the eccentric wheel (11) is arranged in the cavity and can rotate in the cavity. When coils (21) are electrified, the eccentric wheel (11) can rotate under torque, the rotating center of the eccentric wheel (11) is the central axis of the rotating shaft (12), the eccentric wheel (11) is not a disc with uniform mass distribution, and therefore, the mass center and the rotating center of the eccentric wheel (11) are not at the same point. In this way, the eccentric mover (1) is of an eccentric structure, so that the eccentric mover can generate a vibration sense during rotation. Compared with the prior art which requires an additional eccentric block to be added to a rotating shaft, the motor (100) can generate a vibration sense by means of the improvement of the structure of the eccentric wheel (11), facilitating the increase of the rotating speed of the motor and the reduction of energy consumption.

Description

Motors and electronic equipment Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a motor and electronic equipment. Background Art

[0002] Motors are widely used in all walks of life. They are devices that convert electrical energy into mechanical energy. In order to achieve ideal vibration, motors often attach eccentric blocks to the protruding end of the rotating shaft. However, this is equivalent to adding a load to the motor, which is not conducive to increasing the motor speed and requires energy consumption.

[0003] In view of this, it is necessary to provide a new motor and electronic device to solve or at least alleviate the above technical defects.

[0004] Summary of the Invention

[0005] The main purpose of the present invention is to provide a motor and an electronic device, aiming to solve the technical problem in the prior art that an eccentric block is set on the rotating shaft of the motor to limit the rotation speed and consume energy.

[0006] To achieve the above object, according to one aspect of the present invention, the present invention provides a motor, comprising:

[0007] a stator, the stator including a coil assembly, the coil assembly forming a cavity;

[0008] The eccentric mover includes a rotating shaft and an eccentric wheel sleeved on the rotating shaft, the eccentric wheel includes a magnetic component, and the eccentric wheel is arranged in the cavity and can rotate in the cavity.

[0009] In one embodiment, the eccentric wheel is formed with a notch.

[0010] In one embodiment, the magnetic assembly includes a magnetic conductive member and a permanent magnet. The magnetic conductive member is mounted on the rotating shaft, and the permanent magnet is unevenly distributed along the outer circumference of the magnetic conductive member.

[0011] In one embodiment, the magnetic assembly includes a magnetic conductive member, a permanent magnet, and a mass block. The magnetic conductive member is sleeved on the rotating shaft, and the permanent magnet and the mass block are arranged on the periphery of the magnetic conductive member.

[0012] In one embodiment, the permanent magnet includes multiple sub-magnets, and the multiple sub-magnets are evenly distributed along the outer periphery of the magnetic conductive member. An installation groove capable of accommodating the mass block is formed between two adjacent sub-magnets. There are multiple installation grooves, and the mass blocks are unevenly distributed in the multiple installation grooves.

[0013] In one embodiment, the permanent magnet includes two sub-magnets, and the two sub-magnets are evenly spaced along the outer circumference of the magnetic conductive member. The two sub-magnets are formed with two mounting grooves. The number of the mass block is one, and the mass block is arranged in one of the mounting grooves.

[0014] In one embodiment, the stator further includes a magnetic conductive ring, and the coil assembly is disposed in the magnetic conductive ring.

[0015] In one embodiment, the motor further includes a limiting member, which is disposed at the notch to limit the rotation angle of the eccentric wheel.

[0016] In one embodiment, the limiting member includes a limiting block and a buffer member, and the buffer member is provided on the abutting surface of the limiting block for abutting against the eccentric wheel.

[0017] According to another aspect of the present invention, the present invention further provides an electronic device, comprising a housing and the motor as described above disposed in the housing.

[0018] In the above scheme, the motor includes a stator and an eccentric mover. The stator includes a coil assembly, and the coil assembly forms a cavity. The eccentric mover includes a rotating shaft and an eccentric wheel mounted on the rotating shaft. The eccentric wheel includes a magnetic assembly. The eccentric wheel is arranged in the cavity and can rotate in the cavity. The eccentric mover includes a rotating shaft and an eccentric wheel mounted on the rotating shaft. The eccentric wheel includes a magnetic assembly. When the coil is energized, the eccentric wheel will rotate due to torque. The center of rotation of the eccentric wheel is the central axis of the rotating shaft. However, the eccentric wheel is not a circular disk with uniform mass distribution. Therefore, the center of mass of the eccentric wheel and the center of rotation are not at the same point. In this way, since the eccentric mover is an eccentric structure, it will produce a sense of vibration when it rotates. Compared with the prior art that requires an additional eccentric block to be added to the rotating shaft, this invention can produce a sense of vibration by improving the eccentric wheel structure, which is beneficial to increasing the motor speed and reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0020] FIG1 is a schematic diagram of the exploded structure of a motor according to an embodiment of the present invention;

[0021] FIG2 is a schematic structural diagram of a stator and an eccentric mover of a motor according to an embodiment of the present invention;

[0022] FIG3 is a schematic structural diagram of a magnetic conductive ring and an eccentric mover of a motor according to an embodiment of the present invention;

[0023] FIG4 is a schematic structural diagram of an eccentric mover of a motor according to an embodiment of the present invention;

[0024] FIG5 is another structural schematic diagram of the stator and eccentric mover of the motor according to an embodiment of the present invention;

[0025] FIG6 is a schematic diagram of the cross-sectional structure of a motor according to an embodiment of the present invention.

[0026] Explanation of reference numbers: 100, motor; 1, eccentric mover; 11, eccentric wheel; 112, magnetic assembly; 1121, permanent magnet; 11211, sub-magnet; 1122, mass block; 1123, magnetic member; 113, gap; 12, rotating shaft; 2, stator; 21, coil; 22, magnetic ring; 3, upper shell; 31, upper through hole; 4, lower shell; 41, lower through hole; 5, limit member.

[0027] The realization of the objectives, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0029] It should be noted that all directional indications (such as up, down, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, the terms "first," "second," and so on, used in this disclosure are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one of these features.

[0031] Moreover, the technical solutions between the various embodiments of the present invention may be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0032] 1 to 4 , according to one aspect of the present invention, a motor 100 is provided, comprising a stator 2 and an eccentric mover 1, wherein the stator 2 comprises a coil assembly, and the coil assembly forms a cavity; the eccentric mover 1 comprises a rotating shaft 12 and an eccentric wheel 11 mounted on the rotating shaft 12, the eccentric wheel 11 comprises a magnetic assembly 112, and the eccentric wheel 11 is disposed in the cavity and can rotate in the cavity.

[0033] The motor 100 of the present application first magnetizes the magnetic component 112 and then energizes the coil component. The eccentric wheel includes the magnetic component 112. The coil 21 applies a torque to the eccentric wheel 11, driving the eccentric wheel 11 and thus causing the eccentric mover 1 to rotate. The eccentric mover 1 includes a rotating shaft 12 and an eccentric wheel 11 mounted on the rotating shaft 12. The eccentric wheel 11 includes the magnetic component 112. When the coil 21 is energized, the eccentric wheel 11 is subjected to torque and rotates. The eccentric mover 1 can have various forms: for example, the eccentric wheel 11 is a circular disc with uniform mass, but the central axis of the rotating shaft 12 is offset from the center of the eccentric wheel 11; or the rotation center of the eccentric wheel 11 is the axis of the rotating shaft 12, and the eccentric wheel 11 is not a circular disc with uniform mass distribution, such as an elliptical disc, so the center of mass of the eccentric wheel 11 and the center of rotation are not at the same point. In this way, since the eccentric mover 1 is an eccentric structure, it will have a sense of vibration when it rotates. Compared with the prior art which requires an additional eccentric block to be added to the rotating shaft 12, this embodiment can generate a vibration sensation by improving the structure of the eccentric wheel 11, which is beneficial to increasing the motor speed and reducing energy consumption.

[0034] 3 and 4 , in one embodiment, the eccentric wheel 11 is formed with a notch 113. Specifically, the notch 113 can be a sector-shaped notch. By providing the notch 113 on the eccentric wheel 11, an irregular structure of the eccentric wheel 11 is achieved, so that the center of mass of the eccentric wheel 11 and its center of rotation do not coincide, thereby generating a vibration during rotation. This also reduces the mass of the eccentric wheel 11, thereby further increasing the speed of the motor 100 and reducing energy consumption.

[0035] In one embodiment, the stator 2 includes a magnetic ring 22, within which the coil assembly is disposed. The magnetic ring 22, also known as a yoke, is made of stacked silicon steel sheets and is evenly and symmetrically arranged around the coil assembly to prevent leakage magnetic flux from spreading outward.

[0036] In one embodiment, the magnetic assembly 112 may include only a magnetic member 1123 and a permanent magnet 1121. The magnetic member 1123 is mounted on the rotating shaft 12, and the permanent magnets 1121 are unevenly distributed along the outer circumference of the magnetic member 1123. The outer circumference of the magnetic member 1123 refers to the entire circumference surrounding the magnetic member 1123. The uneven distribution of the permanent magnets 1121 on the outer circumference of the magnetic member 1123 has two meanings: first, there is only one permanent magnet 1121, and one permanent magnet 1121 does not form a complete circle. Therefore, the mass distribution of the eccentric wheel 11 is uneven, and the rotation center of the eccentric wheel 11 does not coincide with the center of mass of the eccentric wheel 11. Second, the permanent magnet 1121 includes multiple sub-magnets 11211, which are spaced apart and arranged on the outer circumference of the magnetic member 1123. The multiple sub-magnets 11211 are unevenly distributed along the outer circumference of the magnetic member 1123. If the sub-magnets 11211 are uniformly spaced along the periphery of the magnetic member 1123, the rotation center of the eccentric wheel 11 will coincide with the center of mass of the eccentric wheel 11, preventing the effective vibration. Therefore, multiple sub-magnets 11211 are unevenly spaced along the periphery of the magnetic member 1123.

[0037] Of course, in another embodiment, the mass and size of the iron of each sub-magnet 11211 can also be different. In this case, even if the sub-magnets 11211 are evenly spaced, the rotation center of the eccentric 11 will not coincide with the center of mass of the eccentric 11, and the eccentric mover 1 will still produce a vibration when rotating.

[0038] It should be noted that the magnetic conductive member 1123 can be formed by stacking iron sheets or silicon steel sheets, which can play a connecting and magnetic conductive role. The coil assembly can include a frame and a coil 21 wound on the frame. The frame is installed on the magnetic conductive ring 22 to provide support for the winding of the coil 21, and the frame forms a cavity for the eccentric wheel 11 to rotate. Of course, it is also possible to simply not set up a frame, use enameled wire to wind the coil 21 on the mold, and then use high-temperature glue to shape the coil 21, and form a cavity for the eccentric wheel 11 to rotate in the coil 21. The number of coil assemblies can be two, and the two coil assemblies are set at intervals. The rotating shaft 12 passes through the gap between the two coils 21 and can rotate freely.

[0039] 4 , in one embodiment, the magnetic assembly 112 may include a magnetic member 1123, a permanent magnet 1121, and a mass block 1122. The magnetic member 1123 is mounted on the rotating shaft 12, and the permanent magnet 1121 and the mass block 1122 are arranged on the periphery of the magnetic member 1123. The mass block 1122 is generally made of a material with a higher density, such as lead or tungsten alloy. The density of the mass block 1122 is much greater than that of the permanent magnet 1121. When setting, the mass of the mass block 1122 will also be set to be larger than that of the permanent magnet 1121. By setting the mass block, the sense of vibration can be increased.

[0040] In one embodiment, the permanent magnet 1121 includes multiple sub-magnets 11211, which are evenly spaced along the periphery of the magnetic conductive member 1123. A mounting slot capable of accommodating a mass block 1122 is formed between two adjacent sub-magnets 11211. The number of mounting slots is multiple, and the mass blocks 1122 are unevenly distributed within the multiple mounting slots. The uniform spacing of the multiple sub-magnets 11211 is intended to ensure uniform torque is applied to the eccentric 11 in all directions. Mounting slots are formed between adjacent sub-magnets 11211, and the number of mounting slots is the same as the number of sub-magnets 11211. The number of mass blocks 1122 may be one or more, with at most one mass block 1122 disposed in each mounting slot. The uneven distribution of the mass blocks 1122 within the multiple mounting slots is because a uniform distribution would cause the center of mass of the eccentric 11 to be at its own rotational center, preventing a satisfactory vibration effect.

[0041] Referring to Figure 4, in one embodiment, there are two sub-magnets 11211, and one mass block 1122. The two sub-magnets 11211 are formed with two mounting slots, and the mass block 1122 is arranged in one of the mounting slots formed by the two sub-magnets 11211. The two sub-magnets 11211 are spaced apart to form two mounting slots, and the mass block 1122 is one, and the mass block 1122 is only installed in one of the mounting slots. As a result, the mass distribution of the eccentric wheel 11 is uneven, and the center of mass of the eccentric wheel 11 does not coincide with the center of rotation of the eccentric wheel 11, forming an eccentric structure that can produce a sense of vibration. This embodiment achieves an ideal sense of vibration with a minimum number of sub-magnets 11211 and mass blocks 1122, and is simple to manufacture and easy to install. It should be noted here that the one mounting slot in the two mounting slots where the mass block 1122 is not provided is the notch 113 of the eccentric wheel 11 mentioned above. In a specific embodiment, both sides of the mass block 1122 are respectively in contact with the two sub-magnets 11211 , and the connection strength between the mass block 1122 and the two sub-magnets 11211 is higher.

[0042] Referring to Figure 5 , in one embodiment, the motor 100 further includes a stopper 5 disposed at the notch 113 to limit the rotation angle of the eccentric 11. The stopper 5 allows the motor 100 to swing only within a limited angle, making it an oscillating motor. The stopper 5 may be one or two, and two stoppers 5 may be spaced apart to limit the position of the eccentric 11 from either side of the notch 113.

[0043] In one embodiment, the limiting member 5 includes a limiting block and a buffer. The buffer is disposed on the contact surface of the limiting block that contacts the eccentric wheel 11. The limiting block can be made of metal to increase strength and provide support, while the buffer is used to reduce noise and cushion impact forces. Specifically, the buffer is a rubber layer or a foam layer. The buffer can be made of foam or rubber material.

[0044] Referring to Figure 1 , in one embodiment, the motor 100 further includes an upper housing 3 and a lower housing 4. The upper housing 3 covers the top surface of the magnetic ring 22, while the lower housing 4 covers the bottom surface of the magnetic ring 22. The upper housing 3 defines an upper through-hole 31 for mounting a stopper 5, while the lower housing 4 defines a lower through-hole 41 for mounting a stopper 5. The upper through-hole 31 and the lower through-hole 41 are arranged opposite each other, and the stopper 5 can be mounted on the upper through-hole 31 and the lower through-hole 41 by a snap-fit ​​connection. Of course, in other embodiments, the stopper 5 can also be mounted on the magnetic ring 22.

[0045] It should be noted that the rotation principle of the motor 100 belongs to the prior art, but in order to clearly illustrate the implementation method of the present application, the principle of the motor 100 is described below using a specific embodiment. As shown in Figure 6, the motor 100 includes a stator 2 and an eccentric mover 1. The stator 2 includes a magnetic ring 22 and two coils 21 disposed within the magnetic ring 22. The eccentric mover 1 includes a rotating shaft 12 and an eccentric wheel 11. The eccentric wheel 11 includes a magnetic member 1123 and a permanent magnet 1121 mounted on the rotating shaft 12. The permanent magnet includes two sub-magnets 11211 uniformly and symmetrically disposed on the outer periphery of the magnetic member 1123. A mass block 1122 is disposed in one of the mounting grooves formed by the two sub-permanent magnets 1121. The other mounting groove forms the notch 113 of the eccentric wheel 11. First, the two sub-magnets 11211 can be magnetized. The magnetization direction of the two sub-magnets 11211 is consistent. As shown by the arrow in Figure 6, horizontal magnetization is adopted to the left. The coil 21 is energized in the direction shown in Figure 6, where "*" indicates that the current direction is perpendicular to the paper surface inward, and "." indicates that the current direction is perpendicular to the paper surface outward. According to Ampere's law, the eccentric mover 1 can generate a clockwise torque, that is, the moving eccentric mover will rotate clockwise. By controlling the direction of the current in the coil 21, the motor 100 can rotate continuously around the axis; the device can be used to convert electrical energy into rotational mechanical energy. The structure is simple. Since the eccentric mover 1 is an eccentric structure, it has a vibration feeling when rotating.

[0046] According to another aspect of the present invention, an electronic device is provided, comprising a housing and the motor 100 described above, disposed within the housing. Because the electronic device incorporates all technical solutions of all embodiments of the motor 100 described above, it possesses all the beneficial effects of all of the aforementioned technical solutions, which are not detailed here.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and do not limit the patent scope of the present invention. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that under the technical concept of the present invention, the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents; or directly / indirectly applied to other related technical fields, and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and description of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A motor, characterized in that: include: a stator, the stator comprising a coil assembly, the coil assembly forming a cavity; The eccentric mover comprises a rotating shaft and an eccentric wheel sleeved on the rotating shaft, the eccentric wheel comprises a magnetic component, and the eccentric wheel is arranged in the cavity and can rotate in the cavity.

2. The motor according to claim 1, characterized in that The eccentric wheel is formed with a notch.

3. The motor according to claim 1 or 2, characterized in that: The magnetic assembly comprises a magnetic conductive part and a permanent magnet. The magnetic conductive part is sleeved on the rotating shaft, and the permanent magnet is unevenly distributed along the outer circumference of the magnetic conductive part.

4. The motor according to claim 1 or 2, characterized in that: The magnetic assembly comprises a magnetic conductive part, a permanent magnet and a mass block. The magnetic conductive part is sleeved on the rotating shaft, and the permanent magnet and the mass block are arranged on the outer periphery of the magnetic conductive part.

5. The motor according to claim 4, characterized in that The permanent magnet includes a plurality of sub-magnets, and the plurality of sub-magnets are evenly distributed along the outer circumference of the magnetic conductive member. An installation groove capable of accommodating the mass block is formed between two adjacent sub-magnets. The number of the installation grooves is multiple, and the mass blocks are unevenly distributed in the multiple installation grooves.

6. The motor according to claim 4, characterized in that The permanent magnet includes two sub-magnets, the two sub-magnets are evenly distributed along the outer circumference of the magnetic conductive member, the two sub-magnets are formed with two mounting grooves, the number of the mass block is one, and the mass block is arranged in one of the mounting grooves.

7. The motor according to claim 1, characterized in that The stator further comprises a magnetic conductive ring, and the coil assembly is arranged in the magnetic conductive ring.

8. The motor according to claim 2, characterized in that The motor further comprises a limiting member, and the limiting member is arranged at the notch to limit the rotation angle of the eccentric wheel.

9. The motor according to claim 8, characterized in that The limiting component includes a limiting block and a buffer component, and the buffer component is arranged on the abutting surface of the limiting block for abutting against the eccentric wheel.

10. An electronic device, characterized in that: The electronic device comprises a housing and the motor according to any one of claims 1 to 9 arranged in the housing.

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