CN2624511Y - Brushless DC motor - Google Patents
Brushless DC motor Download PDFInfo
- Publication number
- CN2624511Y CN2624511Y CNU032454945U CN03245494U CN2624511Y CN 2624511 Y CN2624511 Y CN 2624511Y CN U032454945 U CNU032454945 U CN U032454945U CN 03245494 U CN03245494 U CN 03245494U CN 2624511 Y CN2624511 Y CN 2624511Y
- Authority
- CN
- China
- Prior art keywords
- brushless
- motor
- stator
- pin
- retaining element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
A brushless DC motor is provided, which comprises a shell, with a shaft holder and a fastener, the shaft holder is provided with a bearing internally; a stator suited on the shell is provided with a complex number of pole arms winded on the coil; a rotor hinged in the bearing of the shell is equipped with a ring type magnet around the stator; and a drive element, which comprises a drive loop and an induction element, the drive element has a complex number of pins with different lengths, in which, the drive element is fixed with the fixing element to facilitate welding the complex number of pins; By directly welding on the coil and power line pin through drive element and pins with different lengths than that of drive element directly fixed on shell or stator holder, the utility model omits the former circuit board, further saves the cost, and is easy to assemble and reduces the size of product.
Description
Technical field
The utility model relates to motor, especially a kind of Brushless DC motor, by directly being fixed on the driving element on the housing or on the stator seat and the incomplete same pin of pin length of driving element, on the pin that is directly welded in coil and power line, the Brushless DC motor of original circuit board type is improved.
Background technology
The known radiator fan that has been used widely at heat-generating electronic elements and central processing unit is to utilize the radiator fan of Brushless DC motor for power.And the known radiator fan of this kind, for enable also can to use in narrow space, therefore, the dealer can have usage space widely all towards how the volume of radiator fan being made the most compact direction research and development in the hope of making this radiator fan.And in the continuous compressed manufacturing industry of profit itself, how reducing cost, also is the direction that the dealer constantly makes great efforts.
Shown in this Fig. 1,2, the Brushless DC motor radiator fan 9 that this kind is known, establish a central siphon 92 by housing 91, central siphon 92 outsides are passed through and are connected to a stator seat 93 and a circuit board 96, be wound with coil on the stator seat 93 and establish superior pole piece 94, inferior pole piece 95, can articulate for the axle 98 of rotor 97 in the central siphon 92, thus formed Brushless DC motor radiator fan 9, it has certain thickness.Therefore, for making the dealer of Brushless DC motor radiator fan, wanting at the thickness that both is necessary to reduce under the member Brushless DC motor fan, is technical a great problem in fact.
In the middle of the radiator fan 9 of the Brushless DC motor of both having known, be provided with at least on this circuit board 96 and comprise that a hall sensing element 961 and drives the loop, this driving loop is made of transistor more than at least two and necessary electronic element.This hall sensing element is used for detecting the polarity of the annular magnet of rotor, and drives the rotor rotation by driving the loop.Known hall sensing element 961 has four pins 96 2, and pass through four circular holes 963 of circuit board 96 by these four pins 962, be welded in then on the circuit board 96, be electrically connected to the driving loop via circuit board 96, be electrically connected to Brushless DC motor by the electric wire (not shown) that is welded in the circuit board other end again.Therefore, the element of this circuit board 96 can not omit in the structure of known Brushless DC motor fan, only, then, will be very helpful for the Bao Xiaohua and the reduction manufacturing cost of product if the space that circuit board is shared is reduced under the function that does not influence product.
Summary of the invention
In above-mentioned prior art background, the known Brushless DC motor that utilizes is to need compact requirement in response to product for its volume of small-sized heat radiating fan of power, and in the continuous compressed manufacturing industry of profit, the demand of dealer to reducing cost itself, the utility model provides a kind of Brushless DC motor, to reach above-mentioned requirement.
The purpose of this utility model is to provide a kind of Brushless DC motor, makes Brushless DC motor that minimum thickness and volume be arranged.
According to above-described purpose, the utility model provides a kind of Brushless DC motor, comprising: a housing, have an axle bed, and this axle bed is built-in with a bearing; One stator is nested with this axle bed at this housing, and this stator has a plurality of polar arms of coiling; One rotor is articulated in by a rotating shaft in this bearing of this housing, and is provided with an annular magnet and is centered around around this stator; One retaining element is positioned at this housing or this stator; And a driving element, comprising one and drive a loop and a sensing element, this driving element has the incomplete same pin of complex root pin length, and wherein this driving element is fixed by this retaining element, so that weld this complex root pin.
According to above-mentioned conception, wherein wherein two pins of this complex root pin are welded in the coil of this stator, and a pin is welded in power line, and a pin is welded in earth connection.
According to above-mentioned conception, wherein this complex root pin length is that length is staggered.
According to above-mentioned conception, wherein this complex root pin length is all inequality.
According to above-mentioned conception, wherein this sensing element is the hall sensing element of the polarity of the annular magnet of a week detecting this rotor.
According to above-mentioned conception, wherein this retaining element position is between the polar arm of this stator.
According to above-mentioned conception, wherein this retaining element comprises a fixation wall that adhesion arranged.
According to above-mentioned conception, wherein this retaining element comprises a trip that fixation arranged.
According to above-mentioned conception, wherein this retaining element comprises the plurality of fixed hole.
Because Brushless DC motor of the present utility model has been cancelled the design of circuit board component, and replace the sensing element of integrated circuit form, the pin of this integrated circuit can be directly welded on the pin of coil and power line, and makes this Brushless DC motor have minimum thickness and volume.
Description of drawings
What Fig. 1 illustrated is a kind of member exploded perspective view of known Brushless DC motor structure;
What Fig. 2 illustrated is a kind of component composition profile of known Brushless DC motor structure;
What Fig. 3 illustrated is the member exploded perspective view of a preferred embodiment of the present utility model;
That Fig. 4 illustrates is control circuit figure of the present utility model;
What Fig. 5 illustrated is a pin shaped design of driving element of the present utility model; And
What Fig. 6 illustrated is another pin shaped design of driving element of the present utility model.
The diagrammatical symbol explanation:
3: driving element 31: pin 33: detection lines
34: transistor 6: stator 61: stator seat
62: coil 621: coil pin 63: retaining element
7: rotor 71: rotating shaft 72: annular magnet
8: housing 81: axle bed 82: bearing
9: known Brushless DC motor radiator fan
10,91: housing 92: central siphon 93: stator seat
94: top crown 95: bottom crown 96: circuit board
961: hall sensing element 962: pin 963: circular hole
97: rotor 98: the axle of rotor
Embodiment
Embodiment more of the present utility model can be described in detail as follows.Yet except describing in detail, the utility model can also be widely implemented at other embodiment, and scope of the present utility model do not limited, and its scope of being put down in writing with claims is as the criterion.
Since integrated circuit manufacture process update ongoing effort with circuit designer, at present can be with all electronic components on the circuit board, be the hall sensing element, drive the loop and some passive devices are integrated on the integrated circuit, and encapsulated and form.In this case, the function of original circuit board remaining securing integrated circuit and be convenient to weld the pin of integrated circuit, coil and power line only just.Therefore,, then circuit board directly can be removed, for the Bao Xiaohua of product and reduce manufacturing cost, will be very helpful if the pin of integrated circuit can be directly welded on the pin of coil and power line and securing integrated circuit.
A preferred embodiment of the present utility model is asked for an interview shown in Figure 3, is made of stator 6, rotor 7, housing 8 and driving element 3.Stator 6 is stacked to radial even number polar arm 61 by silicon steel sheet and does radially that winding around 62 forms, and stator 6 is nested with the axle bed 81 at housing 8, and rotating shaft 71 pivot joints that supply rotor 7 by the bearing 82 of axle bed 81, rotor 7 has annular magnet 72 tool N, S magnetic pole and is looped around around the stator 6, makes rotor 7 can become relative stator 6 induction rotations.Driving element 3 better position are 61 of the polar arms of stator 6 peripheries, by the pole change of driving element 3 detecting rotors 7, and drive the rotation of rotor 7.In the present embodiment, this driving element 3 comprises a Hall IC, is numbered ATS276 or ATS277.
Driving element 3 is integrated in an integrated circuit and is encapsulated by hall sensing element and driving loop and forms, and it can pass through complex root pin 31 direct source of welding current lines, the earth connection (not shown) reaches is connected with the coil pin 621 of the coil 62 of stator 6.This driving element 3 can be fixed on the appropriate location by the retaining element 63 that is positioned on the stator 6.Retaining element 63 can be a fixation wall or the trip that fixation is arranged that adhesion is arranged, and it also can be positioned on the housing, comprises the plurality of fixed hole on this retaining element.When this driving element 3 is fixed on the retaining element 63 of stator 6, because the distance between each root pin 31 has only 1～2mm, this moment is if four pin 31 length are all identical, then when welding pin and power line, earth connection or coil, when welding, cause short circuit probably because spot welding point is excessive.Because more than, four pin length should be designed to different length or length is staggered, and its shape can be as Fig. 5 or shown in Figure 6.Thus, the known drive circuit that comprises could be reached the fixedly circuit board removal of hall sensing element, and can not influence the function of Brushless DC motor fan.
Please read shown in Figure 4, its control circuit figure of the present utility model, the employed driving element 3 of the utility model comprises four pins as known in the figure, wherein two pins connect stator coil, and one of two pins are ground connection in addition, and another then connects power supply for drawing, this two pin wherein that connects the pin of stator coil can draw and picks out a detection lines 33, this detection lines 33 can be done the amplification of signal by at least one transistor 34, for rotating speed control as the detecting motor, or the caution of detecting motor failure.
Even the utility model is described by enumerating a preferred embodiment, but the utility model is not limited to the embodiment that enumerated.Though the specific embodiment of before having enumerated and having narrated, but apparently, other does not break away under the spirit that the utility model discloses, and the equivalence of being finished changes or modifies, and all should be included in the claim of the present utility model.In addition, all other do not break away under the spirit that the utility model discloses, and other that finished are similar and approximate to be changed or modify, and also all is included in the claim of the present utility model.Should explain scope of the present utility model with the widest definition simultaneously, use and comprise all modifications and similar structures.
Claims (9)
1. Brushless DC motor is characterized in that: comprising:
One housing has an axle bed, and this axle bed is built-in with a bearing;
One stator is nested with this axle bed at this housing, and this stator has a plurality of polar arms of coiling;
One rotor is articulated in by a rotating shaft in this bearing of this housing, and is provided with an annular magnet and is centered around around this stator;
One retaining element is positioned at this housing or this stator; And
One driving element comprises one and drives a loop and a sensing element, and this driving element has the incomplete same pin of complex root pin length, and wherein this driving element is fixed by this retaining element, so that weld this complex root pin.
2. Brushless DC motor as claimed in claim 1 is characterized in that: wherein two pins of this complex root pin are welded in the coil of this stator, and a pin is welded in power line, and a pin is welded in earth connection.
3. Brushless DC motor as claimed in claim 2 is characterized in that: this complex root pin length is that length is staggered.
4. Brushless DC motor as claimed in claim 2 is characterized in that: this complex root pin length is all inequality.
5. Brushless DC motor as claimed in claim 1 is characterized in that: this sensing element is one to be used for detecting the hall sensing element of polarity of the annular magnet of this rotor.
6. Brushless DC motor as claimed in claim 1 is characterized in that: this retaining element is positioned between the polar arm of this stator.
7. Brushless DC motor as claimed in claim 1 is characterized in that: this retaining element comprises a fixation wall that adhesion arranged.
8. Brushless DC motor as claimed in claim 1 is characterized in that: this retaining element comprises a trip that fixation arranged.
9. Brushless DC motor as claimed in claim 1 is characterized in that: this retaining element comprises the plurality of fixed hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032454945U CN2624511Y (en) | 2003-04-17 | 2003-04-17 | Brushless DC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032454945U CN2624511Y (en) | 2003-04-17 | 2003-04-17 | Brushless DC motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2624511Y true CN2624511Y (en) | 2004-07-07 |
Family
ID=34251647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU032454945U Expired - Lifetime CN2624511Y (en) | 2003-04-17 | 2003-04-17 | Brushless DC motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2624511Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100418287C (en) * | 2005-06-10 | 2008-09-10 | 富准精密工业(深圳)有限公司 | Motor stator |
| CN101799707B (en) * | 2009-02-06 | 2012-02-08 | 纬创资通股份有限公司 | Dust prevention method of electronic device and electronic device |
-
2003
- 2003-04-17 CN CNU032454945U patent/CN2624511Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100418287C (en) * | 2005-06-10 | 2008-09-10 | 富准精密工业(深圳)有限公司 | Motor stator |
| CN101799707B (en) * | 2009-02-06 | 2012-02-08 | 纬创资通股份有限公司 | Dust prevention method of electronic device and electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DIODES INC. Free format text: FORMER OWNER: YIHENG ELECTRONIC CO., LTD. Effective date: 20100926 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20100926 Address after: Taiwan County, Taipei, China Patentee after: Diodes Taiwan Inc. Address before: Hsinchu Science Park, Taiwan, China Patentee before: Yiheng Electronic Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130417 Granted publication date: 20040707 |