CN209435084U - A kind of DC Brushless Motor - Google Patents
A kind of DC Brushless Motor Download PDFInfo
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- CN209435084U CN209435084U CN201920224477.6U CN201920224477U CN209435084U CN 209435084 U CN209435084 U CN 209435084U CN 201920224477 U CN201920224477 U CN 201920224477U CN 209435084 U CN209435084 U CN 209435084U
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- brushless motor
- magnet steel
- lower casing
- brake
- holder
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Abstract
The utility model relates to a kind of DC Brushless Motor, which includes upper casing, rotor assembly, stator module and lower casing；Lower casing medial center is equipped with axis, moulding center is equipped with bearing, the assembling of lower casing, stator module and rotor assembly is realized by the rotation connection of axis and bearing, and rotor assembly and stator module are mounted in the shell being made of upper casing, lower casing, form DC Brushless Motor.Brake(-holder) block is equipped on the inside of lower casing in the DC Brushless Motor, the blade quantity and magnetic steel magnetic pole ratio of number on brake(-holder) block are 1:2, ensure that Hall sensor can identify magnet steel polarity in rotor assembly always, realize the normal work of brushless motor.In addition, the magnetic conduction sheet and ticker in rotor assembly weld, ticker, magnetic conduction sheet, bearing and moulding are connected by injection molding manner, and magnetic conduction sheet is connect with magnet steel gluing, and assembling procedure is simple, convenient for operation.
Description
Technical field
The utility model relates to vibrating motor technical field, in particular to a kind of DC Brushless Motor.
Background technique
As the function of smart phone increases, people's lives increasingly be unable to do without mobile phone, due to the enhancing of cell-phone function,
Requirement to signal is higher and higher, and antenna for mobile phone is caused to increase, and brushless motor uses electronic commutation, and there is no produced due to commutation
Raw electric spark can make antenna play adequately effect to reduce the interference to electronic signal.Therefore, in interior of mobile phone
Realize that vibrating effect is increasingly becoming a kind of trend using DC Brushless Motor.
Currently, common DC Brushless Motor utilizes the position of Hall sensor identification rotor assembly and stator module to close more
System, then carries out electronic commutation by driver chip, so that motor be made to be worked normally.In DC Brushless Motor suddenly
Your sensor is mainly the positional relationship for passing through magnet steel polarity identification rotor assembly and stator module in identification rotor assembly, is driven
Dynamic device chip provides power supply to stator module in due course according to the positional relationship of rotor assembly and stator module, transports motor normally
Turn.Under normal circumstances, rotor assembly stop position be arbitrary, that is to say, that there are the pole N/S of magnet steel alternately at just
Rest on the possibility on Hall sensor.Once corresponding with the position of Hall sensor at the pole the N/S alternating of magnet steel, Hall is passed
Sensor just can not identify magnet steel polarity, and directly resulting in motor can not work.In order to solve the technical problem, people to direct current without
Structure inside brush motor has carried out corresponding improvement, but structure is complicated mostly for improved DC Brushless Motor, and difficulty of processing is big,
Manufacturing cost is high, is unfavorable for popularizing.Therefore, design that a kind of structure is simple, easy processing, manufacturing cost is low and can guarantee hall sensing
Device identifies that the polar DC Brushless Motor of magnet steel is very important in rotor assembly always.
Utility model content
In order to solve the above-mentioned technical problem the utility model, provides a kind of DC Brushless Motor, including upper casing, rotor
Component, stator module and lower casing；Upper casing and lower casing form the internal shell containing cavity, rotor assembly and stator module
It is set in the housing, rotor assembly is set to above stator module；Rotor assembly includes moulding, ticker, magnetic conduction sheet, magnet steel and axis
Hold, moulding and ticker be horizontally disposed to form the groove for accommodating magnetic conduction sheet and magnet steel, bearing be set to groove center and with injection molding
Part is fixedly connected, and magnetic conduction sheet and magnet steel are sequentially arranged in groove；Stator module includes pcb board and the driving that is located on pcb board
Chip and two coils, driving chip and two coils are successively electrically connected, so that power supply is supplied by driving chip to coil
Electric current, pcb board are connected by axis with lower casing, and axle position is rotatablely connected in lower casing center, axis and bearing；Lower casing and pcb board
Between be additionally provided with brake(-holder) block, the brake(-holder) block is equipped with multiple outwardly extending blades, blade quantity and magnetic steel magnetic pole ratio of number
For 1:2.
Further, it is equipped with boss on the inside of the lower casing, the axis is installed on boss, and pad is arranged on the axis
Circle, the washer are located above boss.
Further, the brake(-holder) block includes interconnecting piece and three blades, and the interconnecting piece is circular configuration, interconnecting piece
Center is equipped with the through-hole that matches with boss, and the outer edge of interconnecting piece is uniformly distributed that there are three blade, three blades and interconnecting pieces
It is integrally formed.
Further, the brake(-holder) block is made of metal material that can be attracting with magnet steel, and the circumscribed circle of the brake(-holder) block is straight
Diameter is identical as magnet steel diameter.
Further, the lower casing is equipped with fixed groove, and fixed groove matches with the shape of brake(-holder) block, the braking
Piece riveted is connected in fixed groove, and the fixed groove depth is identical as brake(-holder) block thickness.
Further, the moulding is equipped with the card slot to match with magnetic conduction sheet, and moulding passes through card slot and magnetic conduction sheet phase
Even, institute's magnetic conduction sheet is weldingly connected with ticker.
Further, the magnet steel is connect with magnetic conduction sheet gluing.
Further, the magnetic conduction sheet include sheet form base and with sheet form base edge-perpendicular setting bulge-structure,
The inside of bulge-structure is arranged in magnet steel, and bulge-structure is for preventing magnetic field from leaking outside.
Further, the bearing outside diameter is provided with annular groove, and the annular groove is for increasing moulding and bearing
Between abjection power.
Further, capacitor is additionally provided on the pcb board, the capacitor is electrical with the arrival end of pcb board, outlet end respectively
Connection.
The advantageous effects that the utility model is played are as follows:
The utility model realizes the group of lower casing, stator module and rotor assembly by the rotation connection of axis and bearing
Dress, and rotor assembly and stator module are mounted in the shell being made of upper casing, lower casing, form DC Brushless Motor.It should
Brake(-holder) block is equipped on the inside of lower casing in DC Brushless Motor, the blade quantity and magnetic steel magnetic pole ratio of number on brake(-holder) block are 1:
2, it ensure that Hall sensor can identify magnet steel polarity in rotor assembly always by the blade quantity on control brake(-holder) block, it is real
The normal work of DC Brushless Motor is showed.In addition, magnetic conduction sheet in rotor assembly and ticker weld, ticker, magnetic conduction sheet,
Bearing and moulding are connected by way of injection molding, and magnetic conduction sheet is connect with magnet steel gluing, entire rotor assembly production process
Simply, convenient for operation.
Detailed description of the invention
Fig. 1 is the utility model direct current brushless motor construction figure.
Fig. 2 is the utility model rotor assembly structural map.
Fig. 3 is the utility model rotor assembly cross-sectional view.
Fig. 4 is the structural schematic diagram of the utility model magnet steel.
Fig. 5 is the distribution schematic diagram of the pole the utility model magnet steel N and the pole S.
Fig. 6 is the utility model stator module structural map.
Fig. 7 is the utility model stator module top view.
Fig. 8 is the connection relationship diagram of the utility model axis, brake(-holder) block and lower casing.
Fig. 9 is the structural map of the utility model brake(-holder) block.
Figure 10 is the cross-sectional view of the utility model DC Brushless Motor.
Appended drawing reference:
1- upper casing, 2- rotor assembly, 21- moulding, 22- ticker, 23- magnetic conduction sheet, 24- magnet steel, 25- bearing, 3-
Stator module, 31-PCB plate, 32- driving chip, 33- coil, 34- capacitor, 4- lower casing, 41- axis, 42- boss, 43- are fixed
Groove, 44- brake(-holder) block, 441- interconnecting piece, 442- blade, 443- through-hole, 45- washer.
The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；In order to better illustrate this embodiment, attached
Scheme certain components to have omission, zoom in or out, does not represent the size of actual product；To those skilled in the art,
The omitting of some known structures and their instructions in the attached drawings are understandable；The same or similar label corresponds to same or similar
Component；The terms describing the positional relationship in the drawings are only for illustration, should not be understood as the limitation to this patent.
Specific embodiment
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawing, so that advantages and features of the invention are more
It is easily readily appreciated by one skilled in the art, to make apparent define to protection scope of the present invention.
Embodiment 1:
As shown in Fig. 1-Figure 10, present embodiments provide a kind of DC Brushless Motor, including upper casing 1, rotor assembly 2,
Stator module 3 and lower casing 4.Upper casing 1 and lower casing 4 form the internal shell containing cavity, rotor assembly 2 and stator module
3 are set in the housing, and rotor assembly 2 is set to 3 top of stator module, as shown in Fig. 1 and Figure 10.
As shown in Figures 2 and 3, rotor assembly 2 includes moulding 21, ticker 22, magnetic conduction sheet 23, magnet steel 24 and bearing
25.Ticker 22 is sintered by powder die-casting, and ticker 22 is used to realize eccentric vibrating when rotor assembly 2 rotates.Note
Plastic 21 and the horizontally disposed groove for forming receiving magnetic conduction sheet 23 and magnet steel 24 of ticker 22, bearing 25 are set to groove center position
It sets, magnetic conduction sheet 23 is sequentially arranged in groove with the magnet steel 24 after magnetizing.Wherein, 25 outer diameter of bearing is provided with annular groove, annular
Groove is used to increase the abjection power between moulding 21 and bearing 25.
Preferably, the specific assembling procedure of rotor assembly is as follows:
Ticker 22 and magnetic conduction sheet 23 are used into laser welding first, then bearing 25 is installed to the center of injection mold
In pilot pin, while the magnetic conduction sheet 23 being welded and ticker 22 being also placed in injection mold, is molded, to make to shake
Mover 22, magnetic conduction sheet 23, bearing 25 and molding moulding 21 link together, and finally magnet steel 24 is passed through adhesive means and led
Magnetic sheet is connected, and forms rotor assembly 2.Moulding 21 formed after injection molding matches being formed with 23 opposite position of magnetic conduction sheet
Card slot, magnetic conduction sheet is located in card slot.
Preferably, the magnetic conduction sheet 23 includes sheet form base and ties with the protrusion of sheet form base edge-perpendicular setting
The inside of bulge-structure is arranged in structure, magnet steel 24, and bulge-structure has shielding action to the magnetic field that magnet steel 24 is formed, can be effective
Prevent magnetic field from leaking outside.Magnet steel 24 is connected by glue with magnetic conduction sheet 23.
Fraction defective is low when the rotor assembly 2 of above structure manufactures, and yield is high, and bearing 25 passes through injection molding manner and moulding 21
It is connected and fixed, the fixed form of relatively existing laser welding, damage when reducing processing to bearing 25.
As shown in Figure 6 and Figure 7, stator module 3 includes pcb board 31 and be located on pcb board 31 driving chip 32, two
Coil 33 and capacitor 34, driving chip 32 and two coils 33 are successively electrically connected, so that power supply passes through driving chip 32 to line
33 supply electric current of circle.Coil 33 is air core coil, and two coils 33 are symmetrical centered on axis 41, space between angle
Degree is 180 degree, and the magnetic field center of magnetic field center and magnet steel that two air core coils generate is consistent.Capacitor 34 respectively with PCB
The arrival end of plate 31, outlet end are electrically connected, and are interfered for reducing pcb board 31, and protection circuit works normally.Two coils
33 have electric current after powered up passes through and generates corresponding magnetic field, and the magnetic field interaction that the magnetic field and magnet steel 24 generate passes through
Repulsion or suction between two magnetic fields drive rotor assembly to rotate.And driving chip 32 selects the driving core with Hall function
Piece for the position of magnetic pole of real-time detection magnet steel 24, and is realized according to position of magnetic pole and commutates, guarantees the normal fortune of brushless motor
Make.
Pcb board 31 is connected by axis 41 with lower casing 4, and axis 41 is located at 4 center of lower casing, and axis 41 is also as in motor
Mandrel and rotary shaft.Preferably, being equipped with boss 42 on the inside of lower casing 4, axis 41 is installed on boss 42, is arranged on axis 41
Washer 45, washer 45 are located at 42 top of boss.The axis 41 is rotatablely connected with bearing 25, and then makes rotor assembly 2 around axis 41
Rotation, realizes the assembling of lower casing 4, stator module 3 and rotor assembly 2.In DC Brushless Motor after assembling, washer 45
Between boss 42 and bearing 25, for reducing the frictional force between boss 42 and bearing 25, motor noise is reduced.
As shown in figure 8, being additionally provided with brake(-holder) block 44 between lower casing 4 and pcb board 31, brake(-holder) block 44 is fixedly installed in lower casing
4 insides.Preferably, 4 inner surface of lower casing is equipped with fixed groove 43, the shape kissing of fixed groove 43 and brake(-holder) block 44
It closes, 44 riveted of brake(-holder) block is connected in fixed groove 43, and 43 depth of fixed groove is identical as 44 thickness of brake(-holder) block, so that after riveted
44 upper surface of brake(-holder) block be consistent with 4 inner surface level of lower casing.The brake(-holder) block 44 is generally by can be attracting with magnet steel 24
Metal material be made, preferred iron.The circumscribed circle diameter of brake(-holder) block 44 is identical as 24 diameter holding of magnet steel.The brake(-holder) block 44 is set
Have multiple outwardly extending blades 442, the ratio between 442 quantity of blade and 24 number of magnetic poles of magnet steel are 1:2, the pcb board 31 with
Notch is equipped at 442 opposite position of blade.In the present embodiment, magnet steel 24 includes three poles N and three poles S, and the pole N and the pole S exist
It is disposed adjacent on magnet steel 24, each polarity accounts for the 1/6 of 24 area of magnet steel, as shown in Figure 4 and Figure 5.The brake(-holder) block 44 includes connecting
Socket part 441 and three blades 442, interconnecting piece 441 be circular configuration, and the center of interconnecting piece 441 is equipped with to match with boss 42
Through-hole 443, the outer edge of interconnecting piece 441 are uniformly distributed there are three blade 442, and adjacent blades 442 are spaced 120 °, three blades
442 are integrally formed with interconnecting piece 441, specific as shown in Figure 9.
If there are three the settings of the brake(-holder) block 44 of blade 442 and magnet steel 24 to cooperate, the N of brake(-holder) block 44 Yu magnet steel 24 ensure that
Extremely attracting, the pole S of magnet steel 24 just rests on driving chip 32；Opposite, it is extremely attracting in brake(-holder) block 44 and the S of magnet steel 24
When, the pole the N just stay of magnet steel 24 is conducive to the polarity that driving chip 32 identifies magnet steel 24 in real time, solution on driving chip 32
The problem of driving chip 32 of having determined can not identify 24 polarity of magnet steel, ensure that the normal work of motor.
The assembling process of above-mentioned DC Brushless Motor is as follows:
Magnetic conduction sheet 23 is connected with ticker 22 by laser welding, then bearing 25 is installed to the center of injection mold
In pilot pin, then by after welding ticker 22 and magnetic conduction sheet 23 be put into injection mold and be molded, make ticker 22, lead
Magnetic sheet 23, bearing 25 and molding moulding 21 link together.Moulding 21 after molding is in be horizontally disposed with ticker 22,
Magnetic conduction sheet 23 and magnet steel 24 are located in the groove formed by moulding 21 and ticker 22, and bearing 25 is located in moulding 21
The heart.For further mounting magnetic steel 24, need first to carry out dispensing to 23 opposite position of magnetic conduction sheet, the magnet steel 24 after magnetizing is put into recessed
It in slot, is connect with 23 gluing of magnetic conduction sheet, and rotor assembly 2 is formed by hot pressing.Then axis 41 is fixed on to the boss of lower casing 4
In 42 centers, in fixed groove 43 that brake(-holder) block 44 is installed on lower casing 4 in such a way that riveting is bonded, then by stator module
Pcb board in 3 is fixed on axis 41, is rotatablely connected by the bearing 25 in axis 41 and rotor assembly 2, rotor assembly can be realized
2, upper casing 1 is finally fixedly connected with lower casing 4, completes DC Brushless Motor by the assembling of stator module 3 and lower casing 4
Assembling.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (10)
1. a kind of DC Brushless Motor, which is characterized in that including upper casing (1), rotor assembly (2), stator module (3) Ji Xiaji
Shell (4)；Upper casing (1) and lower casing (4) form the internal shell containing cavity, and rotor assembly (2) and stator module (3) are set to
In shell, rotor assembly (2) is set to above stator module (3)；Rotor assembly (2) includes moulding (21), ticker (22), leads
Magnetic sheet (23), magnet steel (24) and bearing (25), moulding (21) and ticker (22) horizontally disposed formed accommodate magnetic conduction sheet (23)
With the groove of magnet steel (24), bearing (25) is set to groove center and is fixedly connected with moulding (21), magnetic conduction sheet (23) and magnet steel
(24) it is sequentially arranged in groove；Stator module (3) includes pcb board (31) and the driving chip (32) being located on pcb board (31)
With two coils (33), driving chip (32) and two coils (33) are successively electrically connected, so that power supply passes through driving chip
(32) electric current is supplied to coil (33), pcb board (31) is connected by axis (41) with lower casing (4), and axis (41) is located at lower casing (4)
Center, axis (41) and bearing (25) are rotatablely connected；Brake(-holder) block (44), the system are additionally provided between lower casing (4) and pcb board (31)
Movable plate (44) is equipped with multiple outwardly extending blades (442), and the ratio between blade (442) quantity and magnet steel (24) number of magnetic poles are 1:2.
2. a kind of DC Brushless Motor as described in claim 1, which is characterized in that be equipped with boss on the inside of the lower casing (4)
(42), the axis (41) is installed on boss (42), is arranged with washer (45) on the axis (41), and the washer (45) is located at convex
Above platform (42).
3. a kind of DC Brushless Motor as claimed in claim 2, which is characterized in that the brake(-holder) block (44) includes interconnecting piece
(441) and three blades (442), the interconnecting piece (441) are circular configuration, and the center of interconnecting piece (441) is equipped with and boss
(42) through-hole (443) to match, the outer edge of interconnecting piece (441) are uniformly distributed there are three blade (442), three blades
(442) it is integrally formed with interconnecting piece (441).
4. a kind of DC Brushless Motor as claimed in claim 3, which is characterized in that brake(-holder) block (44) the You Nengyu magnet steel (24)
Attracting metal material is made, and the circumscribed circle diameter of the brake(-holder) block (44) is identical as magnet steel (24) diameter.
5. a kind of DC Brushless Motor as described in claim 1, which is characterized in that the lower casing (4) is equipped with fixed groove
(43), fixed groove (43) matches with the shape of brake(-holder) block (44), and brake(-holder) block (44) riveted is connected to fixed groove
(43) in, fixed groove (43) depth is identical as brake(-holder) block (44) thickness.
6. a kind of DC Brushless Motor as described in claim 1, which is characterized in that the moulding (21) is equipped with and magnetic conduction sheet
(23) card slot to match, moulding (21) are connected by card slot with magnetic conduction sheet (23), institute's magnetic conduction sheet (23) and ticker (22)
It is weldingly connected.
7. a kind of DC Brushless Motor as claimed in claim 6, which is characterized in that the magnet steel (24) and magnetic conduction sheet (23) gluing
Connection.
8. a kind of DC Brushless Motor as described in claim 1, which is characterized in that the magnetic conduction sheet (23) include sheet form base with
And the inside of bulge-structure is arranged in the bulge-structure with the setting of sheet form base edge-perpendicular, magnet steel (24), bulge-structure is used for
Prevent magnetic field from leaking outside.
9. a kind of DC Brushless Motor as described in claim 1, which is characterized in that it is recessed that bearing (25) outer diameter is provided with annular
Slot, the annular groove are used to increase the abjection power between moulding (21) and bearing (25).
10. a kind of DC Brushless Motor as described in claim 1, which is characterized in that be additionally provided with capacitor on the pcb board (31)
(34), the capacitor (34) is electrically connected with the arrival end of pcb board (31), outlet end respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920224477.6U CN209435084U (en) | 2019-02-22 | 2019-02-22 | A kind of DC Brushless Motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920224477.6U CN209435084U (en) | 2019-02-22 | 2019-02-22 | A kind of DC Brushless Motor |
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| Publication Number | Publication Date |
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| CN209435084U true CN209435084U (en) | 2019-09-24 |
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ID=67977962
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920224477.6U Active CN209435084U (en) | 2019-02-22 | 2019-02-22 | A kind of DC Brushless Motor |
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| Country | Link |
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| CN (1) | CN209435084U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111668987A (en) * | 2020-06-23 | 2020-09-15 | 浙江省东阳市东磁诚基电子有限公司 | Brushless iron core flat vibration motor and implementation method thereof |
-
2019
- 2019-02-22 CN CN201920224477.6U patent/CN209435084U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111668987A (en) * | 2020-06-23 | 2020-09-15 | 浙江省东阳市东磁诚基电子有限公司 | Brushless iron core flat vibration motor and implementation method thereof |
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