CN110932426A - Motor device and electric toothbrush - Google Patents
Motor device and electric toothbrush Download PDFInfo
- Publication number
- CN110932426A CN110932426A CN201911374436.6A CN201911374436A CN110932426A CN 110932426 A CN110932426 A CN 110932426A CN 201911374436 A CN201911374436 A CN 201911374436A CN 110932426 A CN110932426 A CN 110932426A
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- China
- Prior art keywords
- arc
- framework
- shaped
- stator core
- frame body
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/17—Stator cores with permanent magnets
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/24—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like rotating continuously
- A61C17/26—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like rotating continuously driven by electric motor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
- A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
- H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention relates to the technical field of motors, in particular to a motor device and an electric toothbrush, which comprise a shell, wherein a motor shaft, an insulating wire frame and at least one pair of stator cores are arranged in the shell, a magnetic steel structure is arranged in each stator core, the insulating wire frame comprises a first framework and a second framework, and a first connecting frame body is arranged between the first framework and the second framework and is connected with the first connecting frame body through the first connecting frame body; the first framework is provided with a slot, the stator core comprises a first arc-shaped punching sheet and a second arc-shaped punching sheet, and a second connecting frame body is arranged between the first arc-shaped punching sheet and the second arc-shaped punching sheet and connected with the first arc-shaped punching sheet through the second connecting frame body; according to the invention, the stator core is slid into the insulating wire frame, the coil winding is assembled, and the stator core and the insulating wire frame are in a split independent structure, so that the space structure in the insulating wire frame is enlarged, the winding mode of the coil is simplified, meanwhile, an electromagnetic assembly with larger output power can be accommodated in the insulating wire frame, the motor can transmit torque with larger value, and the performance of the motor is improved.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a motor device and an electric toothbrush.
Background
With the improvement of living standard, personal care is more and more emphasized by consumers, and in the technical field of personal care products, such as electric toothbrushes, facial washing brushes, massagers and the like, small vibration motors are generally adopted as driving devices.
At present, connection structure is the integral type between miniature vibrating motor's stator core and the line frame (like figure 1), and stator core is located the line frame, when winding the coil, because the hindrance of line frame leads to causing the coil to wind very inconveniently, has reduced motor device's packaging efficiency, and this structure leads to the line frame inner space limited moreover, can't hold bigger output's electromagnetic component, has further injectd the motor performance.
Therefore, there is a need for a motor apparatus capable of improving the winding efficiency between the coil and the stator core.
Disclosure of Invention
The invention aims to provide a motor device and an electric toothbrush aiming at the defects of the prior art, the stator iron core is designed into an independent structure, the stator iron core slides into an insulating wire frame, a coil winding is assembled, and the stator iron core and the insulating wire frame are in a split independent structure, so that the space structure in the insulating wire frame is enlarged, the winding mode of a coil is simplified, the assembling efficiency of the motor device is improved, meanwhile, an electromagnetic assembly with higher output power can be accommodated in the insulating wire frame, the motor can transmit torque with larger value, the performance of the motor is improved, the overall weight of the electric toothbrush is reduced, and the high-end experience of a user is improved.
The invention is realized by the following technical scheme that the motor device comprises a shell, wherein a motor shaft, an insulating wire frame and at least one pair of stator cores are arranged in the shell, a magnetic steel structure is arranged in each stator core, the insulating wire frame comprises a first framework and a second framework arranged below the first framework, the first framework and the second framework are identical in structure, and a first connecting frame body is arranged between the first framework and the second framework and connected with the first connecting frame body through the first connecting frame body; the stator core comprises a first arc-shaped stamped sheet and a second arc-shaped stamped sheet arranged below the first arc-shaped stamped sheet, wherein a second connecting frame body is arranged between the first arc-shaped stamped sheet and the second arc-shaped stamped sheet and connected with the first arc-shaped stamped sheet through the second connecting frame body; the stator core is characterized in that a second connecting frame body of the stator core is in sliding fit with a groove of a first framework, an inner arc surface of a first arc-shaped punching sheet is attached to an outer circumferential surface of the first framework, an inner arc surface of a second arc-shaped punching sheet is attached to an outer circumferential surface of a magnetic steel structure, and a coil winding is arranged on the outer circumference of the second connecting frame body.
Preferably, a connecting block is arranged between the two stator cores which are adjacent up and down, a gap is arranged between the first framework and the second framework, and the connecting block can slide into the gap.
Preferably, an end cover is arranged at one end of the casing, a bearing is arranged in the end cover, one end of the motor shaft penetrates through the bearing, a stop block and a spring are sleeved on the outer circumference of the middle of the motor shaft, one end of the spring is abutted against the stop block, a shaft sleeve is arranged on an inner ring of the bearing, and the other end of the spring is abutted against the shaft sleeve.
Preferably, the other end of the motor shaft penetrates out of the shell and is connected with an external rotating shaft.
Preferably, the motor shaft is sleeved with a limit block at one end penetrating out of the casing.
Preferably, the first framework comprises a first arc-shaped plate and a second arc-shaped plate, the left end face and the right end face of the first arc-shaped plate are provided with stop plates, and the two end faces of the first arc-shaped stamped plate are respectively in sliding fit with the two stop plates.
Preferably, a third connecting frame body is arranged between the first arc-shaped plate and the second arc-shaped plate, and the groove is formed in the third connecting frame body.
Preferably, the inner arc surface of the second arc-shaped plate is attached to the outer arc surface of the second arc-shaped stamped sheet.
Preferably, the magnetic steel structure comprises two S poles and two N poles, and the two S poles and the two N poles are non-uniformly and fixedly arranged on the outer circumference of the motor shaft and are arranged in an NN/SS structure.
An electric toothbrush is provided with the motor device.
The invention has the beneficial effects that: a motor device comprises a casing, wherein a motor shaft, an insulating wire frame and at least one pair of stator cores are arranged in the casing, a magnetic steel structure is arranged in each stator core, each insulating wire frame comprises a first framework and a second framework arranged below the first framework, the first framework and the second framework are identical in structure, and a first connecting frame body is arranged between the first framework and the second framework and connected with the first framework through the first connecting frame body; the stator core comprises a first arc-shaped stamped sheet and a second arc-shaped stamped sheet arranged below the first arc-shaped stamped sheet, wherein a second connecting frame body is arranged between the first arc-shaped stamped sheet and the second arc-shaped stamped sheet and connected with the first arc-shaped stamped sheet through the second connecting frame body; the second connecting frame body of the stator core is in sliding fit with the slot of the first framework, the inner arc surface of the first arc-shaped stamped sheet is attached to the outer circumference surface of the first framework, the inner arc surface of the second arc-shaped punching sheet is attached to the outer circumference surface of the magnetic steel structure, and the outer circumference of the second connecting frame body is provided with the coil winding. When the wire winding mode of coil has been simplified, the packaging efficiency of motor device has been improved, can hold bigger output's electromagnetic component in the insulating line frame, the motor can transmit the moment of torsion of bigger numerical value, promotes the motor performance, lightens electric toothbrush's whole weight, improves the high-end experience of using the user.
Drawings
Fig. 1 is a schematic structural view of a stator core and an insulating bobbin in the prior art.
Fig. 2 is an exploded view of the present invention.
Fig. 3 is a schematic view of an assembly structure of a stator core and an insulating bobbin according to the present invention.
Fig. 4 is an exploded view of the stator core and the insulating bobbin according to the present invention.
Fig. 5 is an exploded view of another embodiment of the stator core and the insulating bobbin according to the present invention.
Fig. 6 is a schematic cross-sectional structure of the present invention.
Fig. 7 is an enlarged schematic view of a portion a in fig. 6.
Fig. 8 is a schematic perspective view of an insulating bobbin according to the present invention.
Detailed Description
The present invention will be further described with reference to fig. 2 to 8 and the detailed description thereof.
As shown in fig. 2 to 4, a motor apparatus includes a housing 1, a motor shaft 2, an insulating bobbin 3, and at least one pair of stator cores 4 are disposed in the housing 1, a magnetic steel structure 5 is disposed in each stator core 4, the insulating bobbin 3 includes a first frame 31 and a second frame 32 disposed below the first frame 31, the first frame 31 and the second frame 32 have the same structure, and a first connecting frame 33 is disposed between the first frame 31 and the second frame 32 and connected thereto through the first connecting frame 33; the first framework 31 is provided with a slot 34, the stator core 4 comprises a first arc-shaped stamped steel 41 and a second arc-shaped stamped steel 42 arranged below the first arc-shaped stamped steel 41, and a second connecting frame body 43 is arranged between the first arc-shaped stamped steel 41 and the second arc-shaped stamped steel 42 and connected with each other through the second connecting frame body 43; stator core 4's second connection support body 43 and the fluting 34 sliding fit of first skeleton 31, the intrados of first arc towards piece 41 and the outer periphery laminating of first skeleton 31, the intrados of second arc towards piece 42 and the outer periphery laminating of magnet steel structure 5, the outer circumference of second connection support body 43 is provided with coil winding 6.
In this embodiment, the stator core 4 is designed to be an independent structure, the second connecting frame body 43 of the stator core 4 is slidably matched with the slot 34 of the first frame 31, the stator core 4 is assembled with the first frame 31 of the insulating bobbin 3 (the assembling manner of the other pair of stator core 4 and the second frame 32 which are vertically adjacent to the stator core 4 is the same as that described above), the coil winding 6 is arranged at the second connecting frame body 43 of the stator core 4, wherein the inner arc surface of the first arc-shaped stamped sheet 41 of the stator core 4 is attached to the outer circumferential surface of the first frame 31, and the inner arc surface of the second arc-shaped stamped sheet 42 of the stator core 4 is attached to the outer circumferential surface of the magnetic steel structure 5, so that the stator core 4 can be well fixed.
According to the invention, the stator iron core 4 is designed into an independent structure, the stator iron core 4 is slid into the insulating wire frame 3, the coil winding 6 is assembled, and the stator iron core 4 and the insulating wire frame 3 are in a split independent structure, so that the space structure in the insulating wire frame 3 is enlarged, the winding mode of the coil is simplified, the assembly efficiency of the motor device is improved, meanwhile, the electromagnetic assembly with larger output power can be accommodated in the insulating wire frame 3, the motor can transmit torque with larger value, the performance of the motor is improved, the overall weight of the electric toothbrush is reduced, and the high-end experience of a user is improved.
As shown in fig. 5, as another embodiment of the stator core 4 of the present invention, a connecting block 7 is disposed between two vertically adjacent stator cores 4, a gap 8 is disposed between the first frame 31 and the second frame 32, and the connecting block 7 can slide into the gap 8, in this embodiment, a pair of vertically adjacent stator cores 4 is disposed as an independent component, and the pair of stator cores 4 can be assembled on the insulating bobbin 3 at one time by being slidably fitted in the gap 8 between the first frame 31 and the second frame 32, thereby improving the assembly efficiency of the motor apparatus.
When the motor device works, as the motor shaft 2 rotates at a high speed, the gap between the bearing 10 and the motor shaft 2 is enlarged, which causes noise to be generated in the motor device due to vibration of the bearing 10, as shown in fig. 6 to 7, in this embodiment, an end cover 9 is disposed at one end of the housing 1, a bearing 10 is disposed in the end cover 9, one end of the motor shaft 2 penetrates through the bearing 10, a stopper 11 and a spring 12 are sleeved on the outer circumference of the middle portion of the motor shaft 2, one end of the spring 12 is abutted against the stopper 11, an inner ring of the bearing 10 is provided with a shaft sleeve 13, the other end of the spring 12 is abutted against the shaft sleeve 13, and the gap between the bearing 10 and the motor shaft 2 is always kept to be reduced under the action.
In this embodiment, the other end of the motor shaft 2 penetrates out of the casing 1 and is connected to the external rotating shaft 14, the external rotating shaft 14 is detachably connected to one end of the motor shaft 2, and the external rotating shaft 14 with different sizes and types can be replaced due to different external devices.
In this embodiment, the motor shaft 2 is provided with a limiting block 15 at an end penetrating out of the casing 1.
As shown in fig. 8, in this embodiment, the first framework 31 includes a first arc-shaped plate 311 and a second arc-shaped plate 312, two end faces of the first arc-shaped plate 311 are provided with stop plates 313, two end faces of the first arc-shaped stamped steel 41 are respectively in sliding fit with the two stop plates 313, under the action of the stop plates 313, the first arc-shaped plate 311 forms an arc-shaped slide rail, and is in sliding fit with an inner arc surface of the first arc-shaped stamped steel 41, so as to assemble the stator core 4 and the first framework 31 of the insulating bobbin 3 together.
In this embodiment, a third connection frame 314 is disposed between the first arc-shaped plate 311 and the second arc-shaped plate 312, the slot 34 is disposed on the third connection frame 314, the second connection frame 43 of the stator core 4 is slidably engaged with the slot 34 of the first frame 31, the stator core 4 is assembled with the first frame 31 of the insulating bobbin 3, and the third connection frame 314 does not block the stator core 4.
In this embodiment, the inner arc surface of the second arc-shaped plate 312 is attached to the outer arc surface of the second arc-shaped stamped steel 42, so as to fix the stator core 4 better.
In this embodiment, the magnetic steel structure 5 includes two S poles and two N poles, and is non-uniformly and fixedly arranged at the outer circumference of the motor shaft 2, and is arranged in an NN/SS structure, the angle range of the arc surface on the S pole of the magnetic steel structure 5 is 64 ± 10 degrees, the angle range between the two S poles is 36 ± 10 degrees, and the included angle range between the N pole and the S pole of the magnetic steel structure 5 is 16 ± 10 degrees.
An electric toothbrush is provided with the motor device of any one of the above embodiments.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.
Claims (10)
1. The utility model provides a motor device, includes the casing, be provided with motor shaft, insulating line frame and at least a pair of stator core in the casing, be provided with the magnet steel structure in the stator core, its characterized in that: the insulating wire frame comprises a first framework and a second framework arranged below the first framework, the first framework and the second framework are identical in structure, and a first connecting frame body is arranged between the first framework and the second framework and connected with the first framework through the first connecting frame body; the stator core comprises a first arc-shaped stamped sheet and a second arc-shaped stamped sheet arranged below the first arc-shaped stamped sheet, wherein a second connecting frame body is arranged between the first arc-shaped stamped sheet and the second arc-shaped stamped sheet and connected with the first arc-shaped stamped sheet through the second connecting frame body; the stator core is characterized in that a second connecting frame body of the stator core is in sliding fit with a groove of a first framework, an inner arc surface of a first arc-shaped punching sheet is attached to an outer circumferential surface of the first framework, an inner arc surface of a second arc-shaped punching sheet is attached to an outer circumferential surface of a magnetic steel structure, and a coil winding is arranged on the outer circumference of the second connecting frame body.
2. An electric machine arrangement according to claim 1, characterized in that: and a connecting block is arranged between the two stator cores which are adjacent up and down, a gap is arranged between the first framework and the second framework, and the connecting block can slide into the gap.
3. An electric machine arrangement according to claim 1, characterized in that: the motor is characterized in that an end cover is arranged at one end of the shell, a bearing is arranged in the end cover, one end of the motor shaft penetrates through the bearing, a stop block and a spring are sleeved on the outer circumference of the middle of the motor shaft, one end of the spring is abutted to the stop block, a shaft sleeve is arranged on an inner ring of the bearing, and the other end of the spring is abutted to the shaft sleeve.
4. An electric machine arrangement according to claim 1, characterized in that: the other end of the motor shaft penetrates out of the shell and is connected with an external rotating shaft.
5. An electric machine arrangement according to claim 4, wherein: and a limiting block is sleeved on the outer circumference of one end of the motor shaft, which penetrates out of the shell.
6. An electric machine arrangement according to claim 1, characterized in that: the first framework comprises a first arc-shaped plate and a second arc-shaped plate, the left end face and the right end face of the first arc-shaped plate are provided with stop plates, and the two end faces of the first arc-shaped stamped plate are respectively in sliding fit with the two stop plates.
7. An electric machine arrangement as claimed in claim 6, wherein: the first arc with be provided with the third between the second arc and connect the support body, the fluting sets up on the third connects the support body.
8. An electric machine arrangement as claimed in claim 6, wherein: and the inner arc surface of the second arc-shaped plate is attached to the outer arc surface of the second arc-shaped punching sheet.
9. An electric machine arrangement according to claim 1, characterized in that: the magnetic steel structure comprises two S poles and two N poles, and the two S poles and the two N poles are non-uniformly and fixedly arranged on the outer circumference of the motor shaft and are arranged in an NN/SS structure.
10. An electric toothbrush characterized by: an electric toothbrush having a motor device according to any one of claims 1 to 9 disposed therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911374436.6A CN110932426A (en) | 2019-12-27 | 2019-12-27 | Motor device and electric toothbrush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911374436.6A CN110932426A (en) | 2019-12-27 | 2019-12-27 | Motor device and electric toothbrush |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110932426A true CN110932426A (en) | 2020-03-27 |
Family
ID=69862240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911374436.6A Pending CN110932426A (en) | 2019-12-27 | 2019-12-27 | Motor device and electric toothbrush |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110932426A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113315294A (en) * | 2021-06-22 | 2021-08-27 | 南通向方机电科技有限公司 | Motor for electric toothbrush of duplex bearing encapsulation |
-
2019
- 2019-12-27 CN CN201911374436.6A patent/CN110932426A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113315294A (en) * | 2021-06-22 | 2021-08-27 | 南通向方机电科技有限公司 | Motor for electric toothbrush of duplex bearing encapsulation |
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