CN220475469U - Non-magnetic motor and electric toothbrush - Google Patents

Abstract

The utility model discloses a non-magnetic motor and an electric toothbrush with the same, wherein the non-magnetic motor comprises a mounting rack, a rotor assembly and a stator assembly; a containing cavity is formed in the mounting frame, and a mounting hole and a limiting hole are formed in the cavity wall of the containing cavity; the mounting frame comprises a plurality of frame bodies which are connected in sequence in a detachable way, the mounting hole is formed in one of the frame bodies, the accommodating cavity is at least formed by surrounding two frame bodies, and the limiting hole is at least formed by surrounding two frame bodies; the rotor assembly and the stator assembly are arranged in the accommodating cavity, a gap is reserved between the stator assembly and the rotor assembly, the stator assembly comprises a limiting part, the limiting part is arranged in the limiting hole in a penetrating mode, and the hole wall of the limiting hole is in butt joint with the limiting part. In the magneto-less motor of the application, the mounting bracket is formed by a plurality of support bodies in a detachable connection mode in sequence, so that the stator assembly and the rotor assembly can be installed in the splicing and forming process of the mounting bracket, and workers have enough operation space, so that the installation difficulty of the rotor assembly and the stator assembly is reduced.

Description

Non-magnetic motor and electric toothbrush

Technical Field

The utility model relates to the technical field of motors, in particular to a non-magnetic motor and an electric toothbrush.

Background

The motor is a common article in daily life, and the motor is an electromagnetic device for converting electric energy into mechanical energy according to an electromagnetic induction law. The Chinese patent with the application number of CN105262300A discloses a non-magnetic motor, which comprises a casing, a motor shaft, a rotor coil and a stator coil, wherein the motor shaft is rotatably arranged in the casing, the rotor coil is fixedly arranged on the motor shaft, the stator coil is fixedly arranged on the inner wall of the casing, a rotating magnetic field is formed by supplying current to the stator coil, and after the rotor coil is electrified, the rotor coil can rotate in the rotating magnetic field to drive the motor shaft to rotate, so that the conversion from electric energy to mechanical energy is realized. However, since the stator coil is fixed to the inner wall of the casing, for some motors having a small volume, the space inside the casing is narrow and the operation space is limited, so that the installation of the stator coil is difficult.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art, and a first aspect of the present utility model provides a non-magnetic motor with a stator assembly convenient to install. The second aspect of the present utility model also provides an electric toothbrush incorporating the embodiments of the first aspect of the present utility model.

According to an embodiment of the first aspect of the present utility model, there is provided a non-magnetic motor including a plurality of frame bodies, a mover assembly and a stator assembly; the plurality of frame bodies are sequentially and detachably connected, and the plurality of frame bodies are connected to form a containing cavity and a limiting hole; the mounting hole is arranged on one of the frame bodies and is communicated with the accommodating cavity; the rotor component is rotatably arranged in the accommodating cavity, and a rotating shaft of the rotor component is rotatably arranged in the mounting hole in a penetrating manner; the stator assembly is arranged in the accommodating cavity, a gap is reserved between the stator assembly and the rotor assembly, at least part of the stator assembly penetrates through the limiting hole and is abutted against the wall of the limiting hole, and the wall of the limiting hole can limit and fix the stator assembly.

The non-magnetic motor has at least the following beneficial effects: the mounting frame is formed by sequentially and detachably connecting a plurality of frame bodies, the accommodating cavity on the mounting frame is formed by surrounding at least two frame bodies, and the limiting hole on the mounting frame is formed by surrounding at least two frame bodies, so that when the rotor component and the stator component are installed in the accommodating cavity, the rotor component and the stator component can be installed on one frame body forming the accommodating cavity, and then other frame bodies forming the accommodating cavity are connected with the former frame body, so that the installation of the rotor component and the stator component in the accommodating cavity is completed; when the limiting part is arranged in the limiting hole, the limiting part can be firstly arranged on one frame body forming the limiting hole, and then other frame bodies forming the limiting hole are connected with the previous frame body, so that the limiting part is arranged in the limiting hole. In the non-magnetic motor of this application, the mounting bracket is formed by a plurality of support bodies detachable connection in proper order for stator module and active cell subassembly can be installed at the splice forming in-process of mounting bracket, in order to make stator module and active cell subassembly staff have sufficient operating space when the installation, in order to reduce the installation degree of difficulty of active cell subassembly and stator module.

According to the non-magnetic motor disclosed by the embodiment of the first aspect of the utility model, two frame bodies are arranged along the axial direction of the rotating shaft, sub-accommodating cavities are formed in the frame bodies, limiting grooves communicated with the sub-accommodating cavities are formed in the peripheral sides of the frame bodies, the sub-accommodating cavities of the two frame bodies jointly form accommodating cavities, and the groove walls of the limiting grooves of the two frame bodies jointly surround to form limiting holes.

According to the non-magnetic motor disclosed by the embodiment of the first aspect of the utility model, the frame body comprises the cover plate and the plurality of limiting rods, the plurality of limiting rods are arranged at intervals along the edge of the cover plate, the plurality of limiting rods surround to form the sub-accommodating cavity, the cover plate and any two adjacent limiting rods surround to form a limiting groove, and the limiting rods on the two frame bodies are in one-to-one correspondence and are connected.

According to the non-magnetic motor disclosed by the embodiment of the first aspect of the utility model, the non-magnetic motor further comprises a shell, a mounting cavity is formed in the shell, an opening which is communicated with the mounting cavity and the outside is further formed in the shell, the two frame bodies are all contained in the mounting cavity, an abutting part is arranged at the opening of the shell and is abutted with one frame body, and the abutting part is used for being matched with the cavity wall of the mounting cavity so that the two frame bodies can be mutually abutted and contained in the mounting cavity.

According to the non-magnetic motor provided by the embodiment of the first aspect of the utility model, the stator assembly comprises a stator inner core and a stator coil, the stator inner core comprises a winding part and a limiting part, the stator coil is spirally wound on the winding part, and the limiting part is arranged in the limiting hole in a penetrating way.

According to the non-magnetic motor provided by the embodiment of the first aspect of the utility model, the rotor assembly further comprises a fixing frame, a rotor inner core and a rotor coil, wherein the rotor coil is spirally wound on the rotor inner core, the rotor inner core is detachably arranged on the fixing frame, and the rotating shaft is arranged on the fixing frame.

According to the non-magnetic motor provided by the embodiment of the first aspect of the utility model, the fixing frame comprises a first bracket and a second bracket, and two ends of the inner core of the rotor are detachably connected with the first bracket and the second bracket respectively.

According to the non-magnetic motor disclosed by the embodiment of the first aspect of the utility model, the inner core of the rotor is connected to the fixing frame in a plug-in manner.

An embodiment of the second aspect of the utility model provides an electric toothbrush comprising a magneto-less motor according to an embodiment of the first aspect of the utility model.

The electric toothbrush according to the embodiment of the second aspect of the utility model further comprises a control module and a brush head, wherein the rotating shaft is connected with the brush head, the control module is electrically connected with the magneto-less motor, and the control module is used for controlling the rotating shaft of the magneto-less motor to alternately rotate positively and negatively.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further described below with reference to the drawings and examples;

FIG. 1 is a schematic diagram of a non-magnetic motor according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the mounting bracket of the non-magnetic motor of FIG. 1;

FIG. 3 is a schematic view of the housing of the non-magnetic motor of FIG. 1;

FIG. 4 is a schematic illustration of the stator assembly of the non-magnetic motor of FIG. 1;

FIG. 5 is a schematic structural view of a mover assembly of the non-magnetic motor of FIG. 1;

fig. 6 is a schematic structural view of a fixed frame, a mover inner core and a mover coil of the mover assembly shown in fig. 5.

Reference numerals:

a mounting frame 100; a housing chamber 101; a limiting hole 102; an upper frame 110; a cover plate 111; a stopper rod 112; a lower frame 120; a mounting hole 121;

a mover assembly 200; a rotation shaft 210; a fixing frame 220; a first bracket 221; a plug protrusion 221a; a second bracket 222; a mover core 230; a socket hole 231; a mover coil 240;

a stator assembly 300; a stator core 310; a winding portion 311; a stopper 312; a stator coil 320;

a housing 400; a mounting cavity 401; the abutment 410.

Detailed Description

Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

The non-magnetic motor and the electric toothbrush according to the present utility model will be described in detail with reference to fig. 1 to 6.

Referring to fig. 1, the non-magnetic motor according to the embodiment of the first aspect of the present utility model includes a mounting frame 100, a mover assembly 200, and a stator assembly 300.

A containing cavity 101 is formed in the mounting frame 100, and a mounting hole 121 and a limiting hole 102 are formed in the cavity wall of the containing cavity 101; the mounting frame 100 comprises a plurality of frame bodies which are sequentially and detachably connected, the mounting hole 121 is formed in one frame body, the accommodating cavity 101 is at least formed by surrounding two frame bodies, and the limiting hole 102 is at least formed by surrounding two frame bodies; the rotor assembly 200 is rotatably arranged in the accommodating cavity 101, and the rotating shaft 210 of the rotor assembly 200 is rotatably arranged through the mounting hole 121; the stator assembly 300 is arranged in the accommodating cavity 101, a gap is reserved between the stator assembly 300 and the rotor assembly 200, the stator assembly 300 comprises a limiting part 312, the limiting part 312 is arranged in the limiting hole 102 in a penetrating mode, the hole wall of the limiting hole 102 is abutted to the limiting part 312, and limiting fixation can be carried out corresponding to the limiting part 312.

For example, as shown in fig. 1, 2 and 3, a containing cavity 101 is formed in the mounting frame 100, limiting holes 102 are formed on cavity walls on the left side and the right side of the containing cavity 101, a mounting hole 121 is formed on the cavity wall on the lower end of the containing cavity 101, the stator assembly 300 and the rotor assembly 200 are both arranged in the containing cavity 101, the stator assembly 300 is located on the front side of the rotor assembly 200, a gap is reserved between the stator assembly 300 and the rotor assembly 200, so that the rotor assembly 200 has enough space to rotate, the stator assembly 300 comprises two limiting parts 312 distributed along the left-right direction, the two limiting parts 312 are distributed and arranged in the limiting holes 102 in a penetrating manner, and the limiting holes 102 can limit the limiting parts 312 in four directions from front to back, and a rotating shaft 210 of the rotor assembly 200 is rotatably arranged in the mounting hole 121 in a penetrating manner. The mounting frame 100 is formed by sequentially and detachably connecting a plurality of frame bodies, the accommodating cavity 101 on the mounting frame 100 is formed by surrounding at least two frame bodies, the limiting hole 102 on the mounting frame 100 is formed by surrounding at least two frame bodies, and when the rotor assembly 200 and the stator assembly 300 are mounted in the accommodating cavity 101, the rotor assembly 200 and the stator assembly 300 can be mounted on one frame body forming the accommodating cavity 101, and then other frame bodies forming the accommodating cavity 101 are connected with the former frame body, so that the rotor assembly 200 and the stator assembly 300 are mounted in the accommodating cavity 101; when the limiting portion 312 is installed in the limiting hole 102, the limiting portion 312 can be installed on one frame body forming the limiting hole 102, and then other frame bodies forming the limiting hole 102 are connected with the previous frame body, so that the installation of the limiting portion 312 in the limiting hole 102 is completed. In the utility model of the application, the mounting frame 100 is formed by sequentially and detachably connecting a plurality of frame bodies, so that the stator assembly 300 and the rotor assembly 200 can be mounted in the splicing and forming process of the mounting frame 100, and the stator assembly 300 and the rotor assembly 200 have enough operation space for workers during mounting so as to reduce the mounting difficulty of the rotor assembly 200 and the stator assembly 300.

Further, two frame bodies are arranged along the axial direction of the rotating shaft 210, sub accommodating cavities 101 are formed in the frame bodies, limiting grooves communicated with the sub accommodating cavities are formed in the peripheral sides of the frame bodies, the sub accommodating cavities of the two frame bodies jointly form accommodating cavities 101, and groove walls of the limiting grooves of the two frame bodies jointly surround to form limiting holes 102. For example, as shown in fig. 2, two frames are provided, the two frames are distributed along the vertical direction, a sub-accommodating cavity is formed in the middle of the frame, limiting grooves are formed in the left and right side walls of the frame, the frame located below can be set to be a lower frame 120, the frame located above can be set to be an upper frame 110, the sub-accommodating cavity and the limiting grooves on the lower frame 120 are all opened upwards, a mounting hole 121 is formed in the lower frame 120, the sub-accommodating cavity and the limiting grooves on the upper frame 110 are all opened downwards, when the rotor assembly 200 and the stator assembly 300 are mounted in the mounting frame 100, a worker can firstly mount the rotor assembly 200 and the stator assembly 300 in the sub-accommodating cavity of the lower frame 120, and enable the rotating shaft 210 of the rotor assembly 200 to penetrate through the mounting hole 121, and enable the two limiting parts 312 of the rotor assembly 200 to be distributed in the two limiting grooves, then, the worker can connect the upper frame 110 with the lower frame 120, and further enable the rotor assembly 200 and the stator assembly 300 to be mounted in the accommodating cavity 101 of the mounting frame 100. Since the upper and lower frame bodies 110 and 120 are not connected when the mover assembly 200 and the stator assembly 300 are mounted, interference of the upper frame body 110 to the mover assembly 200 and the stator assembly 300 can be reduced, and the mover assembly 200 and the stator assembly 300 can be mounted more conveniently.

Specifically, the frame body comprises a cover plate 111 and a plurality of limit rods 112, the limit rods 112 are arranged at intervals along the edge of the cover plate 111, the limit rods 112 surround to form a sub-accommodating cavity, the cover plate 111 and any two adjacent limit rods 112 surround to form a limit groove, and the limit rods 112 on the two frame bodies are in one-to-one correspondence and are connected. For example, as shown in fig. 2, the frame body includes a cover plate 111 and four limit rods 112, the four limit rods 112 are distributed along the edge of the cover plate 111 at intervals, a limit groove is formed between two adjacent limit rods 112, the cover plate 111 and the four limit rods 112 jointly surround to form a sub-accommodating cavity, and the limit rods 112 on the two frame bodies are arranged in a one-to-one correspondence.

In some embodiments of the present utility model, the non-magnetic motor further includes a housing 400, a mounting cavity 401 is formed inside the housing 400, an opening communicating the mounting cavity 401 with the outside is further formed in the housing 400, the mounting rack 100 is accommodated in the mounting cavity 401, an abutment portion 410 is disposed at the opening of the housing 400, the abutment portion 410 abuts against a rack body, and the abutment portion 410 is used for matching with a cavity wall of the mounting cavity 401, so that two racks can be accommodated in the mounting cavity 401 in a mutually abutting manner. For example, as shown in fig. 3, the non-magnetic motor further includes a housing 400, a mounting cavity 401 is formed in the housing 400, an opening communicating the mounting cavity 401 with the outside is formed at an upper end of the housing 400, two abutting portions 410 are provided at edges of the opening of the housing 400, the two abutting portions 410 extend toward a middle portion of the opening, the mounting frame 100 is accommodated in the mounting cavity 401, the two abutting portions 410 are abutted with the upper frame 110 of the mounting frame 100, and the abutting portions 410 can be matched with a bottom cavity wall of the mounting cavity 401 to position the mounting frame 100, so that the upper frame 110 and the lower frame 120 can be firmly connected. Furthermore, the arrangement of the abutting portion 410 on the housing 400 can reduce the arrangement of the connecting member between the upper frame 110 and the lower frame 120, so that the assembly and disassembly between the upper frame 110 and the lower frame 120 are more convenient.

In some embodiments of the present utility model, the stator assembly 300 includes a stator core 310 and a stator coil 320, the stator core 310 including a winding portion 311 and a stopper portion 312, and the stator coil 320 being spirally wound around the winding portion 311. For example, as shown in fig. 4, the stator assembly 300 includes a stator core 310 and a stator coil 320, the stator core 310 includes a winding portion 311 and a limiting portion 312, the limiting portion 312 is provided with two, the two limiting portions 312 are respectively located at left and right sides of the winding portion 311, and the stator coil 320 is spirally wound on the winding portion 311. Through set up spacing portion 312 on stator inner core 310, and then the pore wall of spacing hole 102 of mounting bracket 100 can carry out spacingly to spacing portion 312 of stator inner core 310 to accomplish the spacing to stator coil 320.

In some embodiments of the present utility model, referring to fig. 5 and 6, the mover assembly 200 further includes a fixing frame 220, a mover core 230, and a mover coil 240, the mover coil 240 is spirally wound on the mover core 230, and the mover core 230 is detachably mounted on the fixing frame 220, and the rotation shaft 210 is provided on the fixing frame 220. It can be appreciated that the removable mounting of the mover core 230 on the fixing frame 220 facilitates the dismounting between the mover core 230 and the fixing frame 220.

Further, the fixing frame 220 includes a first bracket 221 and a second bracket 222, and two ends of the mover core 230 are detachably connected to the first bracket 221 and the second bracket 222, respectively. For example, as shown in fig. 5 and 6, the fixing frame 220 includes a first bracket 221 and a second bracket 222, the first bracket 221 may be located above the second bracket 222, the mover core 230 is disposed between the first bracket 221 and the second bracket 222, and upper and lower ends of the mover core 230 are detachably connected with the first bracket 221 and the second bracket 222, respectively. Furthermore, when the worker installs the mover core 230 on the seat, the worker can first connect the lower end of the mover core 230 with the second bracket 222 to mount the mover core 230 on the second bracket 222, and then, the worker can mount the first bracket 221 on the second bracket 222 to detachably connect the upper end of the mover core 230 with the first bracket 221, thereby completing the mounting of the mover core 230 on the fixing frame 220. By arranging the fixing frame 220 as the first bracket 221 and the second bracket 222, the installation of the inner rotor core 230 on the fixing frame 220 can be completed in the process of assembling to form the fixing frame 220, so that the interference of part of the structure of the fixing frame 220 on the installation of the inner rotor core 230 is reduced.

Specifically, the inner core 230 is connected to the fixing frame 220 in a plugging manner. For example, as shown in fig. 6, the first support 221 and the second support 222 are respectively provided with a plugging protrusion 221a, the upper end and the lower end of the mover core 230 are respectively provided with a plugging hole 231, the plugging protrusion 221a of the first support 221 is inserted into the plugging hole 231 at the upper end of the mover core 230, and the plugging protrusion 221a of the second support 222 is inserted into the plugging hole 231 at the lower end of the mover core 230.

An electric toothbrush according to an embodiment of the second aspect of the present utility model includes a magneto-less motor provided by an embodiment of the first aspect of the present utility model.

In some embodiments of the present utility model, the electric toothbrush further comprises a control module and a brush head, the rotating shaft 210 is connected to the brush head, the control module is electrically connected to the non-magnetic motor, and the control module is used for controlling the rotating shaft 210 of the non-magnetic motor to alternately rotate in the forward direction and in the reverse direction.

Specifically, the control module transmits a PWM square wave signal to the non-magnetic motor, and when the square wave signal is at a high level +3.7v, the direction of the current passing through the mover coil 240 is a positive direction, and the mover inner core 230 drives the rotation shaft 210 to rotate forward; when the square wave signal is at low level-3.7V, the direction of the current passing through the mover coil 240 is the opposite direction, and the mover core 230 drives the rotation shaft 210 to rotate reversely.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A non-magnetic motor, comprising:

the plurality of frame bodies are detachably connected in sequence, and the plurality of frame bodies are connected to form a containing cavity (101) and a limiting hole (102);

the mounting hole (121) is arranged on one of the frame bodies and is communicated with the accommodating cavity (101);

the rotor assembly (200) is rotatably arranged in the accommodating cavity (101), and a rotating shaft (210) of the rotor assembly (200) is rotatably arranged in the mounting hole (121) in a penetrating manner;

stator module (300), locate in holding chamber (101), stator module (300) with leave the clearance between rotor subassembly (200), stator module (300) at least part wear to locate in spacing hole (102), and with the pore wall looks butt of spacing hole (102), the pore wall of spacing hole (102) can be right stator module (300) is spacing fixed.

2. The magneto-less motor according to claim 1, wherein the two frame bodies are arranged along the axial direction of the rotating shaft (210), sub-accommodating cavities are formed in the frame bodies, limit grooves communicated with the sub-accommodating cavities are formed in the peripheral sides of the frame bodies, the accommodating cavities (101) are jointly formed by the sub-accommodating cavities of the two frame bodies, and the limit holes (102) are jointly formed by surrounding the groove walls of the limit grooves of the two frame bodies.

3. The magneto-less motor according to claim 2, wherein the frame body comprises a cover plate (111) and a plurality of limit rods (112), the limit rods (112) are arranged at intervals along the edge of the cover plate (111), the limit rods (112) surround to form the sub-accommodating cavity, the cover plate (111) and any two adjacent limit rods (112) surround to form a limit groove, and the limit rods (112) on the two frame bodies are in one-to-one correspondence and are connected.

4. A magneto-less motor according to claim 3, further comprising a housing (400), wherein a mounting cavity (401) is formed in the housing (400), openings for communicating the mounting cavity (401) with the outside are further formed in the housing (400), the two frames are both accommodated in the mounting cavity (401), an abutting portion (410) is disposed at the opening of the housing (400), the abutting portion (410) abuts against one of the frames, and the abutting portion (410) is used for being matched with the cavity wall of the mounting cavity (401) so that the two frames can be accommodated in the mounting cavity (401) in an abutting manner.

5. The non-magnetic motor of claim 1, wherein the stator assembly (300) includes a stator core (310) and a stator coil (320), the stator core (310) includes a winding portion (311) and a limiting portion (312), the stator coil (320) is spirally wound on the winding portion (311), and the limiting portion (312) is disposed in the limiting hole (102).

6. The magneto-less motor of claim 1, wherein the mover assembly (200) further comprises a fixing frame (220), a mover core (230) and a mover coil (240), the mover coil (240) is spirally wound on the mover core (230), and the mover core (230) is detachably mounted on the fixing frame (220), and the rotation shaft (210) is provided on the fixing frame (220).

7. The magneto-less motor of claim 6, wherein the fixing frame (220) includes a first bracket (221) and a second bracket (222), and both ends of the mover core (230) are detachably connected to the first bracket (221) and the second bracket (222), respectively.

8. The magneto-less motor of claim 6, wherein the mover core (230) is connected to the holder (220) in a pluggable manner.

9. An electric toothbrush comprising a magneto-less motor according to any one of claims 1 to 8.

10. The electric toothbrush of claim 9, further comprising a control module and a brush head,

the rotating shaft (210) is connected with the brush head, the control module is electrically connected with the non-magnetic motor, and the control module is used for controlling the rotating shaft (210) of the non-magnetic motor to alternately rotate positively and negatively.