CN102075051A - Micro motor - Google Patents
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- CN102075051A CN102075051A CN2009102242057A CN200910224205A CN102075051A CN 102075051 A CN102075051 A CN 102075051A CN 2009102242057 A CN2009102242057 A CN 2009102242057A CN 200910224205 A CN200910224205 A CN 200910224205A CN 102075051 A CN102075051 A CN 102075051A
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Abstract
The invention relates to a micro motor. The micro motor comprises a base board, a circuit board, a rotor and at least one auxiliary starting piece, wherein the circuit board is combined with the base board and is provided with a coil group and a detection element, or the circuit board can be saved, so that the coil group and the detection element are directly arranged on the base board; the rotor is rotatably combined with the base board and is provided with a permanent magnet; the permanent magnet is provided with a plurality of strong-magnetic areas and a plurality of weak-magnetic areas; and the auxiliary starting piece is a sheet body with a magnetic attraction effect, is arranged between the base board and the rotor and is opposite to the permanent magnet. Therefore, due to a simple structural design, when the rotor stops rotating, the at least one auxiliary starting piece can be subjected to magnetic attraction with at least one strong-magnetic area of the permanent magnet, so that the detection element is not aligned with the weak-magnetic areas in the axial direction of a hub to realize the function that the micro motor is easy to start; meanwhile, the axial height of the micro motor can be effectively reduced, and the micro motor has a simpler structure.
Description
Technical field
The present invention is about a kind of micro motor, especially a kind of micro motor that is easy to start.
Background technology
Existing motor roughly comprises a pedestal, a rotor and stator group.This pedestal is provided with a central siphon; This rotor is rotatably in conjunction with this central siphon; This stator pack is incorporated into this pedestal, and this stator pack is made of several silicon steel sheets and coil; Whereby, after this stator pack energising produces magnetic field, can be in order to drive this rotor rotation.Yet existing motor still has problems such as starting difficulty or startup dead point when reality is used, and therefore, for addressing the above problem, common existing motor all is provided with the dependency structure design of " being easy to start " at present.
Please refer to shown in Figure 1, " utilizing the local magnetic saturation effect of stator to improve the motor that starts the dead point " the patent case that is TaiWan, China I221048 number.Should have a stator 8 by existing motor, this stator 8 comprises several silicon steel sheets 81 that pile up mutually, these silicon steel sheet 81 peripheries have the extension 811 of several radial extensions, respectively these extension 811 ends have utmost point footwear 812, and these utmost point footwear 812 form the asymmetric shape that can make the magnetic flux skew with respect to its center line both sides block.Whereby, this stator 8 can produce asymmetrical magnetic circuit, so that in the process that drives a rotor (not illustrating) work, can change the waveform of output distribution of torque, does not have the effect that starts the dead point to reach.
Yet the stator 8 of above-mentioned existing motor must form the utmost point footwear 812 of asymmetrical shape, makes that relatively respectively the technology of this silicon steel sheet 81 is more complicated difficult, and increases manufacturing cost; In addition, because therefore the utmost point footwear 812 that this stator 8 has asymmetrical shape, also cause the air gap between this stator 8 and this rotor (not illustrating) bigger, influence has the running efficiency of motor now easily.Moreover motor is generally towards directions such as microminiaturized trend research and development design, so that be applied to the various products of miniaturization now; Had certain axial height but should pile up the stator 8 that is constituted mutually, and overall structure is also quite complicated, causes existing motor to be difficult to again the further whole axial height of reduction with this stator 8 by several silicon steel sheets 81; Therefore, also relative limit should have the feasibility that motors designs becomes more compactization now.
Again, as No. 505337 " DC Brushless Motor is easy to start structure " patent case of TaiWan, China, the superior pole piece and the inferior pole piece that disclose stator are extended with the magnetic sheet that the isogonism mistake is established; As No. 539346 " the pole piece structure of motor stator " patent case of TaiWan, China, form the magnetic pole angle phase difference between first magnetic pole of announcement silicon steel sheet group and second magnetic pole; As No. 555290 " stator structure of radial windings " patent case of TaiWan, China, the magnetic pole strength that discloses the stator magnet pole piece is provided with unfilled corner; As I287909 number " motor structure that is easy to start " patent case of TaiWan, China, the magnetic pole strength that discloses stator pack can form strong magnetic area and weak magnetic area.Yet, above-mentioned various existing motor with " being easy to start function ", roughly each silicon steel sheet (or claiming pole piece, magnetic pole, the pole piece etc.) shape at stator improves, so have complex process and manufacturing cost equally than problems such as height, and the structure that respectively should have motor now is also quite complicated, and this stator also has certain axial height, makes respectively to be difficult for being designed to more compactization by existing motor.
Make problems such as difficult for the stator that improves above-mentioned various existing motors has, other has a kind of existing motor to have " being easy to start function " equally.Please refer to shown in Figure 2, " DC Brushless Motor is easy to start structure " the patent case that is TaiWan, China No. 523219; The existing motor of this another kind consists predominantly of a pedestal 91 and a rotor 92.This pedestal 91 has a ringwall (not indicating), and this ringwall is provided with several coils 911 and an IC control piece (not illustrating), and wherein this ringwall is provided with a location hole 912 in addition between two adjacent lines circles 911, and this location hole 912 is in conjunction with positioning piece 913; This rotor 92 is rotatably in conjunction with this pedestal 91, and this rotor 92 has a permanent magnet rings 921, and this permanent magnet rings 921 has a strong magnetic area.When this rotor 92 stopped operating, this keeper 913 was inhaled magnetic orientation with this strong magnetic area, can't start less than the polarity of this permanent magnet rings 921 to avoid the IC control piece to detect.
Compared to improve the various existing motor that is easy to start function to reach at stator profile, the existing motor of above-mentioned another kind then is to utilize this keeper 913 can reach identical function, and this motor directly is provided with several coils 911 in this pedestal 91; Therefore, this another existing motor need not be provided with by several silicon steel sheets and pile up the stator that is constituted mutually, can simplify technology whereby.Yet, the ringwall of the pedestal 91 of this another existing motor must additionally form this location hole 912, except that causing this pedestal 91 to have the problems such as manufacturing is difficult for, these keeper 913 more necessary predetermined lengths that extend axially along this rotor 92, so can with the coil groups 911 mutual contrapositions of the ringwall outer peripheral face that is arranged on this pedestal 91, the axial height that causes being combined with this pedestal 91 of this keeper 913 can't effectively reduce equally, still can't improve the feasibility that this existing motors designs becomes more compactization, so necessity of being improved is arranged.
Summary of the invention
The object of the invention is to improve above-mentioned shortcoming, so that a kind of micro motor that is easy to start function that has to be provided, can effectively reduce the axial height of this micro motor.
The present invention's time goal of the invention, the micro motor that is easy to start that provides a kind of structure more to simplify.
For reaching aforementioned goal of the invention, the technological means that the present invention used is as follows:
A kind of micro motor comprises a substrate, a circuit board, a rotor and at least one assistant starting spare.This substrate has an articulated section; This circuit board is in conjunction with this substrate, and this circuit board is provided with a coil groups and a detecting element; This rotor comprises a wheel hub and a permanent magnet, this rotor is rotatably in conjunction with the articulated section of this substrate, this permanent magnet is in conjunction with this wheel hub and relative with this coil groups and detecting element, this permanent magnet is provided with several N magnetic poles and several S magnetic poles, respectively this N magnetic pole and S magnetic pole all have a strong magnetic area, respectively form a weak magnetic area between this strong magnetic area; And at least one assistant starting spare is the lamellar body with magnetic effect, and this assistant starting spare is arranged between this substrate and this rotor and relative with this permanent magnet; When wherein this rotor stops operating, at least one strong magnetic area of corresponding this permanent magnet of magnetic of this at least one assistant starting spare, make this detecting element this wheel hub axially on do not align with this weak magnetic area.Whereby, under condition, can further reach simple in structure, easy to manufacture, reduce manufacturing cost and can reduce many effects such as axial height with " be easy to start " function.
A kind of micro motor comprises: a substrate, have an articulated section, and this articulated section periphery is provided with a coil groups and a detecting element; A rotor, comprise a wheel hub and a permanent magnet, this rotor is in conjunction with the articulated section of this substrate, this permanent magnet is incorporated into this wheel hub and relative with this coil groups and detecting element, this permanent magnet is provided with N magnetic pole and S magnetic pole, this N magnetic pole and S magnetic pole all have strong magnetic area, form weak magnetic area between this strong magnetic area; And at least one assistant starting spare, this assistant starting spare is the lamellar body with magnetic effect, and this assistant starting spare is arranged between this substrate and this rotor and is relative with this permanent magnet, this assistant starting spare is provided with a faying face and a magnetic face in addition, this faying face fits in a side surface of this substrate, and this magnetic face is towards this permanent magnet; When wherein this rotor stops operating, at least one strong magnetic area of this at least one corresponding this permanent magnet of magnetic of assistant starting spare, this detecting element this wheel hub axially on do not align with this weak magnetic area.
Beneficial effect of the present invention is:
Described assistant starting spare is incorporated between this circuit board and this substrate.Whereby, this circuit board can directly compress this assistant starting spare, and this assistant starting spare can be positioned on this substrate really, to reach the effect that promotes locating effect.
Described substrate is provided with at least one location notch towards a side surface of this circuit board, and this at least one assistant starting spare is incorporated in this at least one location notch.Whereby, this assistant starting spare can firmly be incorporated between this substrate and this circuit board, to reach the effect that promotes linking steady character.
Described circuit board is provided with at least one location notch towards a side surface of this substrate, and this at least one assistant starting spare is incorporated in this at least one location notch.Whereby, this assistant starting spare can firmly be incorporated between this substrate and this circuit board, can reach the effect that promotes linking steady character and reduction axial height equally.
Described assistant starting spare is incorporated into a side surface of this circuit board, and this assistant starting spare is between this permanent magnet and circuit board.Whereby, this assistant starting spare can to increase magnetic effect between the two, make this assistant starting spare really this rotor is positioned a preferable enable position, to reach the effect that is easier to start rotor rotation more near this permanent magnet.
Described assistant starting spare is provided with a relative faying face and a magnetic face in addition, and this faying face is incorporated into a side surface of this circuit board, and this magnetic face is towards this permanent magnet.Whereby, this assistant starting spare can be smooth on this circuit board, to reach the effect that reduces axial height.
Described assistant starting spare is a ring plate, and the inboard two symmetrical magnetic sheets that form of this ring plate in this rotor rotation process, can utilize two symmetrical magnetic sheets, to reach the effect of the spin balancing of effectively keeping this rotor.
The central assembly hole that forms of described ring plate, this circuit board is incorporated in this assembly hole.Whereby, can reach the effects such as linking steady character that promote this circuit board and this assistant starting spare.
Described circuit board is identical with the axial height of assistant starting spare, and the both side surface of this circuit board flushes in the both side surface of this assistant starting spare.Whereby, make this substrate, circuit board and assistant starting spare in conjunction with after axial height further reduce, to reach the effect of reduction axial height.
Described assistant starting spare is two, the arrangement setting that this two assistant starting spare is symmetrical.Whereby, can reach the effect of the spin balancing of keeping this rotor equally.
Form an axial air-gap between the permanent magnet of described rotor and this coil groups.Whereby, can reach effects such as simplifying structure and reduction overall volume.
Described coil groups is for being incorporated into several coils of this circuit board surface with wire laying mode.Whereby, can reach the axial height of effective this circuit board of reduction and simplify the effects such as structure complexity of this circuit board.
Described circuit board can directly omit, and this coil groups and this detecting element directly are arranged at this substrate, and this assistant starting spare is provided with a faying face and a magnetic face in addition, and this faying face fits in a side surface of this substrate, and this magnetic face is towards this permanent magnet.Whereby, can further reach effects such as simplifying structure composition and reduction axial height.
Description of drawings
Fig. 1: the vertical view of the stator of existing motor.
Fig. 2: the three-dimensional exploded view of another kind of existing motor.
Fig. 3: the three-dimensional exploded view when the assistant starting spare of first embodiment of the invention micro motor is arranged at circuit board surface.
Fig. 4: the cutaway view when the assistant starting spare of first embodiment of the invention micro motor is arranged at circuit board surface.
Fig. 5: the vertical view when the assistant starting spare of first embodiment of the invention micro motor is arranged at circuit board surface.
Fig. 6: the three-dimensional exploded view when the assistant starting spare of first embodiment of the invention micro motor is annular design.
Fig. 7: the cutaway view when the assistant starting spare of first embodiment of the invention micro motor is annular design.
Fig. 8: the vertical view when the assistant starting spare of first embodiment of the invention micro motor is annular design.
Fig. 9: the three-dimensional exploded view when the assistant starting spare of first embodiment of the invention micro motor is incorporated between circuit board and the substrate.
Figure 10: the cutaway view when the assistant starting spare of first embodiment of the invention micro motor is incorporated between circuit board and the substrate.
Figure 11: the vertical view when the assistant starting spare of first embodiment of the invention micro motor is incorporated between circuit board and the substrate.
Figure 12: the three-dimensional exploded view of second embodiment of the invention micro motor.
Figure 13: the cutaway view of second embodiment of the invention micro motor.
Figure 14: the vertical view of second embodiment of the invention micro motor.
The main element symbol description:
1 substrate, 11 articulated sections, 12 bearings, 13 location notchs
2 circuit boards, 21 coil groups, 22 detecting elements, 23 through holes
3 rotors, 31 wheel hubs, 311 central shafts, 32 permanent magnets
321 strong magnetic areas, 322 weak magnetic areas, 4 assistant starting spares, 41 ring plates
42 magnetic sheets, 43 faying faces, 44 magnetic faces, 45 assembly holes
5 substrates, 51 articulated sections, 52 bearings, 53 coil groups
54 detecting elements, 6 rotors, 61 wheel hubs, 611 central shafts
62 permanent magnets, 621 strong magnetic areas, 622 weak magnetic areas, 7 assistant starting spares
71 faying faces, 72 magnetic faces, 8 stators, 81 silicon steel sheets
811 extensions, 812 utmost point footwear, 91 pedestals, 911 coils
912 location holes, 913 keepers, 92 rotors, 921 permanent magnet rings
Embodiment
For above-mentioned and other purpose of the present invention, feature and advantage can be become apparent, preferred embodiment of the present invention cited below particularly, and conjunction with figs. are described in detail below:
Please refer to Fig. 3 and shown in Figure 4, the micro motor of first embodiment of the invention comprises a substrate 1, a circuit board 2, a rotor 3 and at least one assistant starting spare 4.This circuit board 2 is in conjunction with this substrate 1; This rotor 3 is rotatably in conjunction with this substrate 1; This at least one assistant starting spare 4 is arranged between this substrate 1 and this rotor 3, with so that this rotor 3 is easy to start rotation.
One side surface of this substrate 1 is provided with an articulated section 11, and this articulated section 11 can be central siphon, axle bed or other can articulate the structural design of combinations for this rotor 3; In preferred embodiment as shown in the figure, disclosing this articulated section 11 is a central siphon, and a bearing 12 can be set in this central siphon.
This circuit board 2 is incorporated into a side surface of this substrate 1 and is positioned at articulated section 11 peripheries of this substrate 1, and this circuit board 2 is provided with a coil groups 21 and a detecting element 22, this coil groups 21 can be made of several coils, this detecting element 22 is in order to detect the polarity of magnetic pole, for example, this detecting element 22 can be a hall sensing element.In addition, this circuit board 2 is preferably an annular printed circuit board (PCB), so that these circuit board 2 central authorities form a through hole 23, this through hole 23 can be stretched through for this articulated section 11.
This rotor 3 comprises a wheel hub 31 and a permanent magnet 32.This wheel hub 31 is provided with a central shaft 311, and this central shaft 311 rotatably is incorporated into the articulated section 11 of this substrate 1; 32 of this permanent magnets are an annular solid that is incorporated into the inboard perisporium of this wheel hub 31; As shown in Figure 5, this permanent magnet 32 this wheel hub 31 axially on relative with this coil groups 21 and this detecting element 22; Wherein this permanent magnet 32 more can utilize the means of magnetizing to be provided with several N magnetic poles and several S magnetic poles (not indicating), and this N, S magnetic pole form the shape that is staggered on this permanent magnet 32, respectively this N magnetic pole and S magnetic pole all have a strong magnetic area 321 (the stronger zone of general reference magnetic force, adjacent intersection away from N magnetic pole and S magnetic pole), respectively form a weak magnetic area 322 (make a general reference the more weak zone of magnetic force, be the adjacent intersection of N magnetic pole and S magnetic pole) between this strong magnetic area 321.
This at least one assistant starting spare 4 is a lamellar body with magnetic conduction function (as sheet metal etc.), and this assistant starting spare 4 is arranged between this substrate 1 and this rotor 3; As shown in Figure 5, this assistant starting spare 4 this wheel hub 31 axially on relative with this permanent magnet 32.
Micro motor of the present invention is when reality is used, this coil groups 21 of these circuit board 2 may command produces alternating magnetic field, so that with the N magnetic pole and the S magnetic pole generation effect of this permanent magnet 32, and then to drive this rotor 3 be that rotate at the center with the articulated section of this central shaft 311 and this articulated section 11.
By the architectural feature of preceding taking off, the main feature of micro motor of the present invention is: when this rotor 3 stops operating, as shown in Figure 5, this at least one assistant starting spare 4 can with at least one strong magnetic area 321 mutual magnetic of this permanent magnet 32, guarantee that this rotor 3 can stop due to a preferable enable position; More in detail, after this rotor 3 stops operating, because this assistant starting spare 4 and these strong magnetic area 321 mutual magnetic, therefore, this wheel hub 31 axially on, can guarantee that this detecting element 22 is positioned at this strong magnetic area 321, this detecting element 22 is not alignd with the weak magnetic area 322 of this permanent magnet 32.Therefore, the preferable position that is provided with of detecting element 22 of the present invention is behind this assistant starting spare 4 and these strong magnetic area 321 mutual magnetic, and this detecting element 22 can be positioned at this strong magnetic area 321 really and be main principle.Whereby, when this coil groups 21 desires to drive once more these rotor 3 rotations, because these detecting element 22 contiguous these strong magnetic areas 321, therefore, this detecting element 22 gets final product the polarity of this permanent magnet 32 of fast detecting, makes micro motor of the present invention be easier to start and can not produce problems such as starting the dead angle.
Moreover the structure of micro motor of the present invention is quite simple and easy, and its this assistant starting spare 4 with demihull shape directly is incorporated between this substrate 1 and this rotor 3, and therefore, this assistant starting spare 4 is unlikely to occupy too much space, and make and assembling quite easy; Moreover the structure of this coil groups 21 is also quite simplified, and can omit traditional silicon steel structure; Generally speaking, micro motor of the present invention is under the condition with the function that is easy to start, and its structure composition has the simple and easy plurality of advantages such as effectively reducing axial height that reaches, and is beneficial to be designed to the motor configuration of more compactization.
The assistant starting spare of micro motor of the present invention 4 can be chosen as one or several according to actual demand; In addition, be arranged at technological concept between this substrate 1 and this rotor 3 based on this assistant starting spare 4, this assistant starting spare 4 also can select to be arranged at several precalculated positions, so that different effects to be provided.Its execution mode roughly can divide into following several:
As shown in Figure 4, disclose first kind of set-up mode of this assistant starting spare 4.This assistant starting spare 4 is one, and this assistant starting spare 4 is incorporated into a side surface of this circuit board 2, makes this assistant starting spare 4 can be between this permanent magnet 32 and circuit board 2.Whereby, this assistant starting spare 4 can be comparatively near this permanent magnet 32, to increase this permanent magnet 32 and this assistant starting spare 4 magnetic effect each other, this rotor 3 is stopped operating after, this assistant starting spare 4 can more easily stop this rotor 3 due to a preferable enable position.Again, this assistant starting spare 4 a preferable relative faying face 43 and magnetic faces 44 of being provided with in addition, this faying face 43 fits in a side surface of this circuit board 2, and 44 in this magnetic face is towards this permanent magnet 32, make this assistant starting spare 4 can be smooth on this circuit board 2, reach the advantage that reduces axial height.
Shown in Fig. 6,7 and 8, disclose second kind of set-up mode of this assistant starting spare 4.This assistant starting spare 4 is one, and this assistant starting spare 4 has a ring plate 41, this ring plate 41 inboard two symmetrical magnetic sheets 42 that form, this two symmetrical magnetic sheet 42 this wheel hub 31 axially on relative with this permanent magnet 32.Whereby, this two symmetrical magnetic sheet 42 is except that can be in order to stopping this rotor 3 due to a preferable enable position, more can be in these rotor 3 rotary courses, utilize the magnetic effect of this magnetic sheet 42 and this permanent magnet 32, effectively to keep the spin balancing of this rotor 3.In addition, these ring plate 41 central authorities can form an assembly hole 45, the shape of this circuit board 2 is preferable to shape that should assembly hole 45, this circuit board 2 is incorporated in this assembly hole 45, and circuit board 2 is identical with the axial height of assistant starting spare 4, make the both side surface of this circuit board 2 can flush in the both side surface of this assistant starting spare 4, with the axial height after this circuit board 2 of effective reduction and 4 combinations of this assistant starting spare.
Shown in Fig. 9,10 and 11, disclose the third set-up mode of this assistant starting spare 4.This assistant starting spare 4 is two, and this two assistant starting spare 4 can be incorporated between this circuit board 2 and this substrate 1, so that this circuit board 2 can directly compress this assistant starting spare 4, and then can effectively this assistant starting spare 4 be positioned really; More in detail, this substrate 1 can be provided with two location notchs 13 towards a side surface of this circuit board 2, this two assistant starting spare 4 is incorporated in this two location notch 13, perhaps, this circuit board 2 can be provided with two location notchs (not illustrating) equally towards a side surface of this substrate 1, is incorporated in this two location notch for this two assistant starting spare 4; Whereby, this two assistant starting spare 4 can be imbedded in this location notch 13, except that better locating effect can be provided, also can make this substrate 1, circuit board 2 and assistant starting spare 4 in conjunction with after axial height further reduce.Again, preceding the third set-up mode of taking off this assistant starting spare 4 also can be the design of a single assistant starting spare 4, and the quantity that 13 pairs of this location notchs should assistant starting spare 4.
By the structural design notion of the invention described above micro motor, micro motor of the present invention also can further comprise at least one accessory structure feature as described below or its combination, and it is perfect that the function of micro motor of the present invention is more leveled off to, wherein:
When described assistant starting spare 4 was two, this two assistant starting spare 4 can be symmetrical arrangement arrangement is set, and this two assistant starting spare 4 this wheel hub 31 axially on relative with this permanent magnet 32, its execution mode promptly as is ditto taken off shown in Figure 9; Whereby, the symmetrically arranged assistant starting spare 4 of this two-phase equally can be in order to stopping this rotor 3 due to a preferable enable position, and hold concurrently and can keep the spin balancing (its effect is identical with execution mode shown in Figure 6) of this rotor 3.
Described coil groups 21 is for being incorporated into several coils on these circuit board 2 surfaces with wire laying mode.Whereby, can effectively reduce the axial height of this circuit board 2, and hold concurrently and to simplify the structure complexity of this circuit board 2, so that micro motor of the present invention is designed to more compactization.
Form an axial air-gap between the permanent magnet 32 of described rotor 3 and this coil groups 21.Whereby, compared to the motor configuration that generally has radial air gap (generally referring to pile up the motor configuration of being formed mutually) by several silicon steel sheets, the micro motor that the present invention has an axial air-gap is easy to start under the condition of function can reaching by this assistant starting spare 4, can further simplify structure and reduction overall volume.
Please refer to shown in Figure 12 and 13, the micro motor of second embodiment of the invention comprises a substrate 5, a rotor 6 and at least one assistant starting spare 7.This rotor 6 is rotatably in conjunction with this substrate 5; This at least one assistant starting spare 7 is arranged between this substrate 5 and this rotor 6, with so that this rotor 6 is easy to start rotation.
One side surface of this substrate 5 is provided with an articulated section 51, and in the present embodiment, disclosing this articulated section 51 is a central siphon, and a bearing 52 can be set in this central siphon.In addition, these substrate 5 peripheries are provided with a coil groups 53 and a detecting element 54, and this coil groups 53 can be made of several coils, and this detecting element 54 is in order to detect the polarity of magnetic pole.
This rotor 6 comprises a wheel hub 61 and a permanent magnet 62.This wheel hub 61 is provided with a central shaft 611, and this central shaft 611 rotatably is incorporated into the articulated section 51 of this substrate 5; 62 of this permanent magnets are an annular solid of the inboard perisporium that is incorporated into this wheel hub 61, as shown in figure 14, this permanent magnet 62 this wheel hub 61 axially on relative with this coil groups 53 and this detecting element 54; Wherein this permanent magnet 62 more can utilize the means of magnetizing to be provided with several N magnetic poles and several S magnetic poles (not indicating), and respectively this N magnetic pole and S magnetic pole all have a strong magnetic area 621, respectively form a weak magnetic area 622 between this strong magnetic area 621.
The lamellar body of this at least one assistant starting spare 7 for having the magnetic effect, and this assistant starting spare 7 is arranged between this substrate 5 and this rotor 6, wherein this assistant starting spare 7 is provided with a relative faying face 71 and a magnetic face 72 in addition, this faying face 71 fits in a side surface of this substrate 5, and 72 in this magnetic face is towards this permanent magnet 62.
The main feature of present embodiment micro motor is: when reality is used, but these coil groups 53 external circuits plates (not illustrating) rotate so that drive this rotor 6.When this rotor 6 stops operating, as shown in figure 14, this at least one assistant starting spare 7 equally can with at least one strong magnetic area 621 mutual magnetic of this permanent magnet 62, can stop due to a preferable enable position to guarantee this rotor 6, and then reach and be easy to start and can not produce effects such as starting the dead angle.The more important thing is, the design that present embodiment can omit this circuit board 2 compared to the micro motor of first embodiment, whereby, structure is formed and the reduction axial height further to simplify.
Again, the assistant starting spare 7 of the micro motor of second embodiment of the invention also can be provided with two, and this two assistant starting spare 7 is for the symmetrical arrangement that is provided with, to reach the effect of the spin balancing of keeping this rotor 6; In addition, this coil groups 53 also can be incorporated into the surface of this substrate 5 by wire laying mode, or can form an axial air-gap between the permanent magnet 62 of this rotor 6 and this coil groups 53, and it all can effectively reduce the axial height of this micro motor; Perhaps, a side surface of this substrate 5 more can form at least certain position groove (not illustrating), in conjunction with this at least one assistant starting spare 7, and then provides this at least one assistant starting spare 7 better locating effect.
By on learn that micro motor of the present invention really can be by the design of this at least one assistant starting spare 4,7, be easy to start and can not produce many effects such as starting the dead angle to reach; And, further utilize easy structural design based under the condition with " be easy to start " function, to reach easy to manufacture and to reduce effect such as manufacturing cost; And with reducing many characteristics such as axial height, so that be designed to the micro motor structure of more compactization.
Claims (21)
1. micro motor is characterized in that comprising:
A substrate has an articulated section;
A circuit board, in conjunction with this substrate, this circuit board is provided with coil groups and detecting element;
A rotor, comprise a wheel hub and a permanent magnet, this rotor is in conjunction with the articulated section of this substrate, this permanent magnet is in conjunction with this wheel hub and relative with this coil groups and detecting element, this permanent magnet is provided with N magnetic pole and S magnetic pole, this N magnetic pole and S magnetic pole all have strong magnetic area, respectively form weak magnetic area between this strong magnetic area; And
At least one assistant starting spare, this assistant starting spare are the lamellar body with magnetic effect, and this assistant starting spare is arranged between this substrate and this rotor and relative with this permanent magnet;
When wherein this rotor stops operating, at least one strong magnetic area of this at least one corresponding this permanent magnet of magnetic of assistant starting spare, make this detecting element this wheel hub axially on do not line up this weak magnetic area.
2. according to the described micro motor of claim 1, it is characterized in that this assistant starting spare is incorporated between this circuit board and this substrate.
3. according to the described micro motor of claim 2, it is characterized in that this substrate is provided with at least one location notch towards a side surface of this circuit board, this at least one assistant starting spare is incorporated in this at least one location notch.
4. according to the described micro motor of claim 2, it is characterized in that this circuit board is provided with at least one location notch towards a side surface of this substrate, this at least one assistant starting spare is incorporated in this at least one location notch.
5. according to the described micro motor of claim 1, it is characterized in that this assistant starting spare is incorporated into a side surface of this circuit board, this assistant starting spare is between this permanent magnet and circuit board.
6. according to the described micro motor of claim 5, it is characterized in that this assistant starting spare is provided with relative a faying face and a magnetic face in addition, this faying face is incorporated into a side surface of this circuit board, and this magnetic face is towards this permanent magnet.
7. according to the described micro motor of claim 1, it is characterized in that this assistant starting spare is a ring plate, this ring plate is inboard to form two symmetrical magnetic sheets, these two magnetic sheets this wheel hub axially on relative with this permanent magnet.
8. according to the described micro motor of claim 7, it is characterized in that these ring plate central authorities form an assembly hole, this circuit board is incorporated in this assembly hole.
9. according to the described micro motor of claim 8, it is characterized in that this circuit board is identical with the axial height of this assistant starting spare, the both side surface of this circuit board flushes in the both side surface of this assistant starting spare.
10. according to claim 1,2,3,4,5 or 6 described micro motors, it is characterized in that this assistant starting spare is two, this two assistant starting spare is arranged setting symmetrically.
11. according to claim 1,2,3,4,5,6,7,8 or 9 described micro motors, it is characterized in that, form an axial air-gap between the permanent magnet of this rotor and this coil groups.
12. according to the described micro motor of claim 10, it is characterized in that, form an axial air-gap between the permanent magnet of this rotor and this coil groups.
13., it is characterized in that this coil groups is for being incorporated into several coils of this circuit board surface with wire laying mode according to claim 1,2,3,4,5,6,7,8 or 9 described micro motors.
14., it is characterized in that this permanent magnet is provided with several N magnetic poles and several S magnetic poles according to claim 1,2,3,4,5,6,7,8 or 9 described micro motors, respectively this N, S magnetic pole form the shape that is staggered on this permanent magnet.
15. a micro motor is characterized in that comprising:
A substrate has an articulated section, and this articulated section periphery is provided with coil groups and detecting element;
A rotor, comprise a wheel hub and a permanent magnet, this rotor is in conjunction with the articulated section of this substrate, this permanent magnet is incorporated into this wheel hub and relative with this coil groups and detecting element, this permanent magnet is provided with N magnetic pole and S magnetic pole, this N magnetic pole and S magnetic pole all have strong magnetic area, respectively form weak magnetic area between this adjacent strong magnetic area; And
At least one assistant starting spare, this assistant starting spare is the lamellar body with magnetic effect, and this assistant starting spare is arranged between this substrate and this rotor and is relative with this permanent magnet, this assistant starting spare is provided with a faying face and a magnetic face in addition, this faying face fits in a side surface of this substrate, and this magnetic face is towards this permanent magnet;
When wherein this rotor stops operating, at least one strong magnetic area of this at least one corresponding this permanent magnet of magnetic of assistant starting spare, make this detecting element this wheel hub axially on do not line up this weak magnetic area.
16., it is characterized in that a side surface of this substrate is provided with at least one location notch according to the described micro motor of claim 15, this at least one assistant starting spare is incorporated in this at least one location notch.
17., it is characterized in that this assistant starting spare is two according to claim 15 or 16 described micro motors, these two assistant starting spares are arranged setting symmetrically.
18. according to claim 15 or 16 described micro motors, it is characterized in that, form an axial air-gap between the permanent magnet of this rotor and this coil groups.
19. according to the described micro motor of claim 17, it is characterized in that, form an axial air-gap between the permanent magnet of this rotor and this coil groups.
20., it is characterized in that this coil groups is for being incorporated into several coils of this substrate surface with wire laying mode according to claim 15 or 16 described micro motors.
21., it is characterized in that this permanent magnet is provided with several N magnetic poles and several S magnetic poles according to claim 15 or 16 described micro motors, respectively this N, S magnetic pole form the shape that is staggered on this permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102242057A CN102075051A (en) | 2009-11-25 | 2009-11-25 | Micro motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102242057A CN102075051A (en) | 2009-11-25 | 2009-11-25 | Micro motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102075051A true CN102075051A (en) | 2011-05-25 |
Family
ID=44033438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102242057A Pending CN102075051A (en) | 2009-11-25 | 2009-11-25 | Micro motor |
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| Country | Link |
|---|---|
| CN (1) | CN102075051A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102904357A (en) * | 2011-07-27 | 2013-01-30 | 元山科技工业股份有限公司 | Thin type motor |
| CN102904356A (en) * | 2011-07-27 | 2013-01-30 | 元山科技工业股份有限公司 | Thin type motor |
| CN103684144A (en) * | 2013-12-04 | 2014-03-26 | 咸凯民 | Direct current unit electric motor starting method |
| CN103973044A (en) * | 2013-01-24 | 2014-08-06 | 建准电机工业股份有限公司 | Motor easy to start and base thereof |
| CN104467337A (en) * | 2014-07-07 | 2015-03-25 | 陈传生 | Thin brushless motor |
| CN107355390A (en) * | 2017-07-09 | 2017-11-17 | 叶露微 | Small-power centrifugal pump directly driven by permanent magnet synchronous motor |
| WO2018152944A1 (en) * | 2017-02-27 | 2018-08-30 | 深圳市道通智能航空技术有限公司 | Motor, and pan-tilt and robotic arm having same |
| CN113922544A (en) * | 2021-10-08 | 2022-01-11 | 浙江大学 | Miniature flat motor |
| CN114301206A (en) * | 2021-12-30 | 2022-04-08 | 王勇 | Disc type driving motor |
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2009
- 2009-11-25 CN CN2009102242057A patent/CN102075051A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102904356A (en) * | 2011-07-27 | 2013-01-30 | 元山科技工业股份有限公司 | Thin type motor |
| CN102904357A (en) * | 2011-07-27 | 2013-01-30 | 元山科技工业股份有限公司 | Thin type motor |
| CN102904356B (en) * | 2011-07-27 | 2015-11-25 | 元山科技工业股份有限公司 | Thin type motor |
| CN102904357B (en) * | 2011-07-27 | 2016-01-20 | 元山科技工业股份有限公司 | Thin type motor |
| US9509201B2 (en) | 2013-01-24 | 2016-11-29 | Sunonwealth Electric Machine Industry Co., Ltd. | Easy-to-start motor including a metallic induction member wrapped with a plastic member and a base thereof |
| CN103973044A (en) * | 2013-01-24 | 2014-08-06 | 建准电机工业股份有限公司 | Motor easy to start and base thereof |
| CN103973044B (en) * | 2013-01-24 | 2016-08-31 | 建准电机工业股份有限公司 | Motor easy to start and base thereof |
| CN103684144A (en) * | 2013-12-04 | 2014-03-26 | 咸凯民 | Direct current unit electric motor starting method |
| CN104467337A (en) * | 2014-07-07 | 2015-03-25 | 陈传生 | Thin brushless motor |
| WO2018152944A1 (en) * | 2017-02-27 | 2018-08-30 | 深圳市道通智能航空技术有限公司 | Motor, and pan-tilt and robotic arm having same |
| CN107355390A (en) * | 2017-07-09 | 2017-11-17 | 叶露微 | Small-power centrifugal pump directly driven by permanent magnet synchronous motor |
| CN107355390B (en) * | 2017-07-09 | 2019-07-16 | 叶露微 | Small-power centrifugal pump directly driven by permanent magnet synchronous motor |
| CN107355390B8 (en) * | 2017-07-09 | 2020-01-07 | 汉宇集团股份有限公司 | Small-power centrifugal pump directly driven by permanent magnet synchronous motor |
| CN113922544A (en) * | 2021-10-08 | 2022-01-11 | 浙江大学 | Miniature flat motor |
| CN113922544B (en) * | 2021-10-08 | 2023-02-14 | 浙江大学 | Miniature flat motor |
| CN114301206A (en) * | 2021-12-30 | 2022-04-08 | 王勇 | Disc type driving motor |
| CN114301206B (en) * | 2021-12-30 | 2023-11-03 | 王勇 | Disk-type driving motor |
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Application publication date: 20110525 |