CN104868683A - Brushless DC motor - Google Patents
Brushless DC motor Download PDFInfo
- Publication number
- CN104868683A CN104868683A CN201410302338.2A CN201410302338A CN104868683A CN 104868683 A CN104868683 A CN 104868683A CN 201410302338 A CN201410302338 A CN 201410302338A CN 104868683 A CN104868683 A CN 104868683A
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- Prior art keywords
- elastic sheet
- control board
- brshless
- electroconductive elastic
- motor
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Abstract
The invention discloses a brushless DC motor, which comprises a shell, a stator, a rotor, a control board and a conductive elastic sheet, wherein both the stator and the rotor are arranged in the shell; the control board and the stator are fixed; an anti-interference circuit is arranged on the control board; the conductive elastic sheet is arranged on the control board; and one end of the conductive elastic sheet is connected with the anti-interference circuit, and the other end of the conductive elastic sheet abuts against the inner wall of the shell. According to the brushless DC motor of the invention, harmonic waves of the brushless DC motor are conducted and eliminated by adopting the conductive elastic sheet, a fool-proof role can be effectively played, the mounting and operation step is simplified, the possibility that wires are wrongly connected due to too many wires can be reduced, the production cost is reduced, and the standardization degree of the brushless DC motor is improved.
Description
Technical field
The present invention relates to motor device field, especially relate to a kind of brshless DC motor.
Background technology
Point out in correlation technique, because traditional high-voltage brushless direct current machine is directly by after the rectification of bridge heap, supply power directly to brshless DC motor, thus make to there is high-pressure system in brushless DC motor control system simultaneously, low-pressure system and winding coil high frequency break-make harmonic wave, thus the EMC (abbreviation of Electromagnetic Compatibility, Electro Magnetic Compatibility) problem have impact on the application of brshless DC motor largely, tradition adopts the position of casing or the brshless DC motor body being wired to brshless DC motor, and then adopt nut and screw to fix, with conduction, harmonic carcellation, but, this not only adds installation procedure, and waste the set-up time, improve material cost, and due to wire more, easily cause confusion, cause potential safety hazard, and wiring place is unreliable, easily cause the problem connecting and loosen.In addition, the sales region difference due to brshless DC motor may cause the specification standards of wire different, makes wire different from the cooperation mounting structure of brshless DC motor, causes conductor length different, is unfavorable for the standardized production of brshless DC motor.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art.For this reason, the object of the invention is to propose a kind of brshless DC motor, described brshless DC motor can be conducted by electroconductive elastic sheet, harmonic carcellation, simple installation and reliability is high.
According to the brshless DC motor of the embodiment of the present invention, comprising: housing; Stators and rotators, described stators and rotators is all located in described housing; Control board, described control board and described stator are fixed, and described control board has anti-clutter circuit; And electroconductive elastic sheet, described electroconductive elastic sheet is located on described control board, and one end of wherein said electroconductive elastic sheet is connected with described anti-clutter circuit, and the other end of described electroconductive elastic sheet and the inwall of described housing only support.
According to the brshless DC motor of the embodiment of the present invention, by the harmonic wave adopting electroconductive elastic sheet to conduct, eliminate brshless DC motor, thus effectively can play foolproof function, simplify installation, operational sequence, reduce the probability of the wrong wire caused because wire, and reduce production cost, improve the standardization level of brshless DC motor.
Particularly, described one end of described electroconductive elastic sheet has connecting portion, and described connecting portion is provided with at least one stitch, and at least one stitch described is soldered to described anti-clutter circuit.
Further, stitch described at least one is vertical with described connecting portion.Thus, can ensure that connecting portion and control board closely cooperate.
Alternatively, described stitch is three and described three spaced apart distributions of stitch.Thus, the connectivity robustness of electroconductive elastic sheet and control board can be improved.
Particularly, the described other end of described electroconductive elastic sheet has retaining part, and the inwall of described retaining part and described housing only supports.
Alternatively, described retaining part is formed as the domes that protrude towards the inwall of described housing.Thus, retaining part can with housing close contact.
Or alternatively, a side surface of the inwall towards described housing of described retaining part is formed as plane.
Particularly, described rotor comprises body and rotating shaft, and one end of described rotating shaft is connected with described body, and described control board is located at the side of the other end away from described rotor of described body.
Alternatively, described electroconductive elastic sheet is elasticity steel part.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Fig. 1 is the explosive view of the brshless DC motor according to the embodiment of the present invention;
Fig. 2 is the stereogram of the electroconductive elastic sheet shown in Fig. 1;
Fig. 3 is the right view of the electroconductive elastic sheet shown in Fig. 2.
Reference numeral:
100: brshless DC motor;
11: front end housing; 12: rear end cap; 13: container cavity;
2: stator;
3: rotor; 31: body; 32; Rotating shaft;
4: control board; 41: electroconductive elastic sheet;
411: body; 412: connecting portion; 4121: stitch; 413: retaining part.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
Below with reference to Fig. 1-Fig. 3, the brshless DC motor 100 according to the embodiment of the present invention is described.Wherein, brshless DC motor 100 can be high-voltage brushless direct current machine or low pressure brshless DC motor, is only described for high-voltage brushless direct current machine below.
As shown in Figure 1, the brshless DC motor 100 of embodiment according to a first aspect of the present invention, comprising: housing, stator 2, rotor 3, control board 4 and electroconductive elastic sheet 41.
Particularly, stator 2 and rotor 3 are all located in housing, and control board 4 is fixed with stator 2.Such as in the example of fig. 1, housing comprises front end housing 11 and rear end cap 12, rear end cap 12 is formed as the cylinder that front side is opened wide substantially, front end housing 11 is formed as plectane substantially, front end housing 11 to be suitable for covering on the front end face of rear end cap 12 and jointly to limit container cavity 13 with rear end cap 12, stator 2, rotor 3 and control board 4 are all located in container cavity 13, wherein, rotor 3 is engaged in the inner side of stator 2 rotationally, and rotor 3 coincides with the central axis of stator 2 and the central axis of housing, control board 4 to be located between stator 2 and front end housing 11 and to be fixed together with stator 2.
Further, control board 4 has anti-clutter circuit, electroconductive elastic sheet 41 is located on control board 4, and wherein one end of electroconductive elastic sheet 41 is connected with anti-clutter circuit, and the other end of electroconductive elastic sheet 41 and the inwall of housing only support.As shown in Figure 1, anti-clutter circuit (scheming not shown) comprises high-impedance resistors and the isolation capacitance of series connection, electroconductive elastic sheet 41 is located between front end housing 11 and control board 4, one end of electroconductive elastic sheet 41 is connected on anti-clutter circuit, the other end of electroconductive elastic sheet 41 is pressed on the rear surface of front end housing 11, thus the interference harmonic wave on control board 4 can pass through anti-clutter circuit, be sent on electroconductive elastic sheet 41 particular by high-impedance resistors and isolation capacitance, be transmitted on front end housing 11 by electroconductive elastic sheet 41 and the contact of front end housing 11 again, thus reach the object eliminating interference harmonic wave.Wherein, anti-clutter circuit is well known to those skilled in the art, no longer describes in detail here.
According to the brshless DC motor 100 of the embodiment of the present invention, by the harmonic wave adopting electroconductive elastic sheet 41 to conduct, eliminate brshless DC motor, thus effectively can play foolproof function, simplify installation, operational sequence, reduce the probability of the wrong wire caused because wire, and reduce production cost, improve the standardization level of brshless DC motor 100.
In one embodiment of the invention, one end (rear end such as shown in Fig. 1) of electroconductive elastic sheet 41 has connecting portion 412, and the other end (front end such as shown in Fig. 1) of electroconductive elastic sheet 41 has retaining part 413.As shown in Figure 1, electroconductive elastic sheet 41 comprises: body 411, connecting portion 412 and retaining part 413, wherein, body 411 is formed as lath-shaped substantially, body 411 tilts to extend along from the front surface of control board 4 towards the direction of the rear surface of front end housing 11, when the front surface of control board 4 is parallel with the rear surface of front end housing 11, body 411 is preferably 50 ° with the angle of the central axis of front end housing 11, connecting portion 412 is connected to the rear end of body 411, and retaining part 413 is connected to the front end of body 411.Preferably, electroconductive elastic sheet 41 is elasticity steel part, and body 411, connecting portion 412 and retaining part 413 are one-body molded.Certainly, body 411 can also be formed as other shapes, such as curved slab etc.
Particularly, connecting portion 412 is provided with at least one stitch 4121, and at least one stitch 4121 is soldered to anti-clutter circuit.With reference to Fig. 1 composition graphs 2 and Fig. 3, connecting portion 412 can be formed as plate shaped, and the front surface being parallel to control board 4 is arranged, connecting portion 412 is connected with body 411, and body 411 smoothly transits with the junction of connecting portion 412, angle α between body 411 and connecting portion 412 is preferably 140 °, thus electroconductive elastic sheet 41 can have good elasticity, stitch 4121 extends from the side surface towards control board 4 of connecting portion 412, correspondingly, control board 4 is formed with the jack (scheming not shown) run through, jack is connected on anti-clutter circuit, and it is identical with the quantity of stitch 4121, position is relative, thus stitch 4121 can be engaged in jack one by one symmetrically, and be soldered in the anti-clutter circuit on control board 4, and then the harmonic wave in anti-clutter circuit can conduct to electroconductive elastic sheet 41.
Alternatively, stitch 4121 is three and three spaced apart distributions of stitch 4121.With reference to Fig. 2 and Fig. 3, the shape of three stitch 4121 is identical, size is equal, wherein each stitch 4121 is all formed as rectangular plate-like, and wherein two stitch 4121 surfaces are in the direction of the width parallel to each other, another one stitch 4121 surface is in the direction of the width vertical with two stitch paralleled 4121 surfaces in the direction of the width, and the line of the central point of three stitch 4121 can be configured to equilateral triangle.Preferably, each stitch 4121 is all perpendicular to connecting portion 412, thus when stitch 4121 is engaged in jack completely, the rear surface of connecting portion 412 closely can coordinate with control board 4, thus add electroconductive elastic sheet 41 and control board 4 coordinate fastness.Here, it should be noted that, the quantity of stitch 4121, shape, size and the arrangement on connecting portion 412 can also be arranged according to actual requirement, and to meet actual requirement better, such as stitch 4121 can also be formed as cylindrical or triangular prism shaped etc.
Retaining part 413 only supports mutually with the inwall of housing, and retaining part 413 is formed as the domes that protrude towards the inwall of housing.With reference to Fig. 2 and Fig. 3, the stiff end of retaining part 413 is connected with the front end of body 411, the free end of retaining part 413 extends towards the direction of control board 4, and the angle β between the free end of retaining part 413 and body 411 is preferably 100 degree, the stiff end of retaining part 413 is connected with adopting the arc transition protruded towards front end housing 11 direction between free end, thus the front end of electroconductive elastic sheet 41 is formed as arch substantially.Thus, the front end face of retaining part 413 can be firm and be closely resisted against on the rear surface of front end housing 11.
Here, it should be noted that, retaining part 413 can also be formed as other shapes, and such as, a side surface of the inwall towards housing of retaining part 413 is formed as plane, and that is, the front end face of retaining part 413 can be configured to plane.Certainly, the front end of electroconductive elastic sheet 41 can not also have retaining part 413, to adapt to actual requirement better.
Further, rotor 3 comprises body 31 and rotating shaft 32, and one end of rotating shaft 32 is connected with body 31, and control board 4 is located at the side of the other end away from rotor 3 (rear end such as shown in Fig. 1) of body 31.As shown in Figure 1, the front end of rotating shaft 32 is fixed in rotor 3, and the rear end of rotating shaft 32 extends back and passes rear end cap 12 backward, and control board 4 is located at the front side of rotor 3 and stator 2.Certainly, the present invention is not limited thereto, control board 4 can also be located at other positions in housing.
The assembling process of brshless DC motor 100 is briefly described referring to Fig. 1:
First stator 2 is pressed in rear end cap 12, then the body 31 of rotor 3 is fixed together with rotating shaft 32 and is arranged on the inner side of stator 2, again by fixing on the stator 2 for the control board 4 being welded with electroconductive elastic sheet 41, finally front end housing 11 and rear end cap 12 being linked together by the mode such as riveting, electroconductive elastic sheet 41 being deformed and closely fits together with front end housing 11.
The course of work of brshless DC motor 100 is briefly described referring to Fig. 1:
Brshless DC motor 100 is under energising operating condition, after the rectification of bridge heap, power supply and small-power switching power-supply supply power directly to control board 4, control board 4 is the whole control system of brshless DC motor 100, control board 4 have accumulated high-pressure system, low-pressure system and winding coil 16K above high-frequency break-make harmonic wave, these interference harmonic waves are sent to electroconductive elastic sheet 41 by high impedance, isolation capacitance on control board 4, be sent to housing by electroconductive elastic sheet 41 again, thus reach the object of harmonic carcellation.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " front ", " afterwards ", " vertically ", " level ", " top ", " end ", " interior ", " outward ", orientation or the position relationship of the instruction such as " axis " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary indirect contact.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this specification or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Claims (9)
1. a brshless DC motor, is characterized in that, comprising:
Housing;
Stators and rotators, described stators and rotators is all located in described housing;
Control board, described control board and described stator are fixed, and described control board has anti-clutter circuit; And
Electroconductive elastic sheet, described electroconductive elastic sheet is located on described control board, and one end of wherein said electroconductive elastic sheet is connected with described anti-clutter circuit, and the other end of described electroconductive elastic sheet and the inwall of described housing only support.
2. brshless DC motor according to claim 1, is characterized in that, described one end of described electroconductive elastic sheet has connecting portion, and described connecting portion is provided with at least one stitch, and at least one stitch described is soldered to described anti-clutter circuit.
3. brshless DC motor according to claim 2, is characterized in that, stitch described at least one is vertical with described connecting portion.
4. brshless DC motor according to claim 2, is characterized in that, described stitch is three and described three spaced apart distributions of stitch.
5. brshless DC motor according to claim 1, is characterized in that, the described other end of described electroconductive elastic sheet has retaining part, and the inwall of described retaining part and described housing only supports.
6. brshless DC motor according to claim 5, is characterized in that, described retaining part is formed as the domes protruded towards the inwall of described housing.
7. brshless DC motor according to claim 1, is characterized in that, a side surface of the inwall towards described housing of described retaining part is formed as plane.
8. the brshless DC motor according to any one of claim 1-7, is characterized in that, described rotor comprises body and rotating shaft, and one end of described rotating shaft is connected with described body, and described control board is located at the side of the other end away from described rotor of described body.
9. brshless DC motor according to claim 1, is characterized in that, described electroconductive elastic sheet is elasticity steel part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410302338.2A CN104868683A (en) | 2014-06-27 | 2014-06-27 | Brushless DC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410302338.2A CN104868683A (en) | 2014-06-27 | 2014-06-27 | Brushless DC motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104868683A true CN104868683A (en) | 2015-08-26 |
Family
ID=53914286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410302338.2A Pending CN104868683A (en) | 2014-06-27 | 2014-06-27 | Brushless DC motor |
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| Country | Link |
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| CN (1) | CN104868683A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08298762A (en) * | 1995-04-25 | 1996-11-12 | Shibaura Eng Works Co Ltd | Brushless dc motor |
| CN201584861U (en) * | 2009-12-21 | 2010-09-15 | 东莞市瑞柯电机有限公司 | EMC filter circuit board welded on motor |
| CN201830040U (en) * | 2010-10-25 | 2011-05-11 | 珠海格力电器股份有限公司 | Plastic packaging motor |
| CN103227537A (en) * | 2013-04-24 | 2013-07-31 | 捷和电机（深圳）有限公司 | Printed circuit board and direct-current motor |
-
2014
- 2014-06-27 CN CN201410302338.2A patent/CN104868683A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08298762A (en) * | 1995-04-25 | 1996-11-12 | Shibaura Eng Works Co Ltd | Brushless dc motor |
| CN201584861U (en) * | 2009-12-21 | 2010-09-15 | 东莞市瑞柯电机有限公司 | EMC filter circuit board welded on motor |
| CN201830040U (en) * | 2010-10-25 | 2011-05-11 | 珠海格力电器股份有限公司 | Plastic packaging motor |
| CN103227537A (en) * | 2013-04-24 | 2013-07-31 | 捷和电机（深圳）有限公司 | Printed circuit board and direct-current motor |
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Application publication date: 20150826 |
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| RJ01 | Rejection of invention patent application after publication |