TWI712251B

TWI712251B - Electric motors and electric tools

Info

Publication number: TWI712251B
Application number: TW108125882A
Authority: TW
Inventors: 鐘福祥; 陳洪昉; 陳威廷; 許維霖
Original assignee: 朝程工業股份有限公司
Priority date: 2019-03-05
Filing date: 2019-07-22
Publication date: 2020-12-01
Also published as: TW202034609A

Abstract

本發明關於一種電動馬達及一裝設此種電動馬達的電動工具，該電動馬達包括：一轉子、一定子、一纏繞於該定子的線圈模組、一霍爾單元及一結線電路單元。該霍爾單元包括一環繞該轉子的轉軸設置的霍爾電路板，及一用以感測該轉子轉動的霍爾模組。該結線電路單元獨立於該霍爾電路板並包括三相之電源接口，該結線電路單元使線圈模組的線圈分組電連接至該等電源接口。藉由將該霍爾單元與該結線電路單元拆開獨立設置，可以減少該霍爾電路板的體積大小，減少阻擋在該散熱單元的風流路徑之面積，故能提高該電動馬達及電動工具的散熱效果。The invention relates to an electric motor and an electric tool equipped with the electric motor. The electric motor includes a rotor, a stator, a coil module wound around the stator, a Hall unit, and a wiring circuit unit. The Hall unit includes a Hall circuit board arranged around the rotating shaft of the rotor, and a Hall module for sensing the rotation of the rotor. The wiring circuit unit is independent of the Hall circuit board and includes a three-phase power interface. The wiring circuit unit electrically connects the coil groups of the coil module to the power interfaces. By disassembling the Hall unit and the connection circuit unit and setting them independently, the volume of the Hall circuit board can be reduced, and the area of the air flow path blocked in the heat dissipation unit can be reduced, so the electric motor and power tool can be improved heat radiation.

Description

電動馬達及電動工具Electric motors and electric tools

本發明是有關於電氣傳動的構件，詳而言之係指一種電動馬達及具有此種電動馬達的一種電動工具。The present invention relates to components of electric transmission, and in detail refers to an electric motor and an electric tool with such an electric motor.

電動工具如電動衝擊扳手、電動鑽頭、電動螺絲起子等，皆為十分普遍使用的裝修工具，參閱圖1及圖2，習知電動工具的基本架構是包括一個電動馬達11、一風扇12、一對應該電動馬達11設置的電路板13、三霍爾元件14，及一具有三相電源接口151的結線模組15。Electric tools such as electric impact wrenches, electric drills, electric screwdrivers, etc., are all very commonly used decoration tools. Refer to Figure 1 and Figure 2. The basic structure of a conventional electric tool includes an electric motor 11, a fan 12, and a Corresponding to the circuit board 13 provided with the electric motor 11, three Hall elements 14, and a wiring module 15 with a three-phase power interface 151.

該電動馬達11具有一轉子111、一圍繞該轉子111的定子112，及複數纏繞該定子112的線圈(圖未示)。The electric motor 11 has a rotor 111, a stator 112 surrounding the rotor 111, and a plurality of coils (not shown) wound around the stator 112.

該電路板13供該等霍爾元件14及一結線模組15設置，該等霍爾元件14設置於該電路板13內圈處並用以感測該轉子111之轉動，該結線模組15設置於電路板13的外圈處並電連接所述之線圈，用以設定該等線圈之電性連接關係，使該等線圈分組電連接至三相之電源接口151。The circuit board 13 is provided for the Hall elements 14 and a wiring module 15. The Hall elements 14 are arranged at the inner circle of the circuit board 13 and used to sense the rotation of the rotor 111. The wiring module 15 is provided The coils are electrically connected to the outer ring of the circuit board 13 to set the electrical connection relationship of the coils so that the coils are grouped and electrically connected to the three-phase power interface 151.

然而，由於該電路板13之外徑需大到可以供該結線模組15方便電連接由該定子112處拉出的線圈，其內徑又需小到可以供該等霍爾元件14靠近感測該轉子111轉動，因此，其內徑至外徑距離較長，體積龐大，且因該等霍爾元件14需靠近該轉子111以獲得較佳的感應效果，再加上其位置正好阻擋在該風扇12所提供的風流路徑上，使得該電動馬達11於靠近該電路板13一側通風不佳，造成該電動馬達11的散熱效果較差。However, since the outer diameter of the circuit board 13 needs to be large enough for the wiring module 15 to electrically connect the coils drawn from the stator 112, its inner diameter needs to be small enough for the Hall elements 14 to be close to sense. It is measured that the rotor 111 rotates. Therefore, the distance from the inner diameter to the outer diameter is long, and the volume is large. The Hall elements 14 need to be close to the rotor 111 to obtain a better sensing effect, and the position is just blocked. The air flow path provided by the fan 12 makes the electric motor 11 poorly ventilated on the side close to the circuit board 13, resulting in poor heat dissipation effect of the electric motor 11.

此外，除了以軟體控制的手段外，習知的電動馬達之結構並無法調整轉速。In addition, in addition to software control, the structure of the conventional electric motor cannot adjust the speed.

因此，本發明的目的即在提供一種可提高散熱效果的電動馬達及電動工具。Therefore, the object of the present invention is to provide an electric motor and electric tool that can improve the heat dissipation effect.

本發明之另一目的在於提供一種電動馬達及電動工具，於不需要更換硬體設備的情況下，可調整電動馬達的轉速。Another object of the present invention is to provide an electric motor and an electric tool, which can adjust the rotation speed of the electric motor without replacing hardware equipment.

本發明所提供之電動馬達，包含有：一具有一轉軸的轉子；一定子，環繞該轉子；一線圈模組，具有複數纏繞於該定子的線圈；一霍爾單元，包括一環繞該轉軸設置之霍爾電路板，及一對應該轉子設置於該霍爾電路板且用以感測該轉子轉動的霍爾模組；及一結線電路單元，獨立於該霍爾電路板並包括一個三相之電源接口，該結線電路單元電連接該等線圈且使該等線圈分組電連接至該等電源接口。The electric motor provided by the present invention includes: A rotor with a rotating shaft; A stator, surrounding the rotor; A coil module with a plurality of coils wound around the stator; A Hall unit, including a Hall circuit board arranged around the rotating shaft, and a pair of Hall modules arranged on the Hall circuit board corresponding to the rotor and used for sensing the rotation of the rotor; and A wiring circuit unit is independent of the Hall circuit board and includes a three-phase power interface. The wiring circuit unit is electrically connected to the coils and the coils are grouped and electrically connected to the power interfaces.

而本發明所提供之電動工具，包含一外殼單元、一電池單元、一上述的電動馬達、一散熱單元，及一控制單元；該電池單元設置於該外殼單元下側；該電動馬達裝設於該外殼單元中；該霍爾單元與該散熱單元沿該轉軸之縱向間隔設置；該控制單元設置於該外殼單元內，電連接該電池單元、該電動馬達與該霍爾單元，且位於該電動馬達與該電池單元間。The electric tool provided by the present invention includes a housing unit, a battery unit, the aforementioned electric motor, a heat dissipation unit, and a control unit; The battery unit is arranged on the lower side of the housing unit; The electric motor is installed in the housing unit; the Hall unit and the heat dissipation unit are spaced apart in the longitudinal direction of the rotating shaft; The control unit is arranged in the housing unit, is electrically connected to the battery unit, the electric motor and the Hall unit, and is located between the electric motor and the battery unit.

本發明的功效在於：藉由將該霍爾單元與該結線電路單元拆開獨立設置，可以減少該霍爾電路板的體積大小，減少阻擋在該散熱單元所提供的風流路徑上之面積，故能提高該電動馬達及電動工具的散熱效果。The effect of the present invention is that by disassembling the Hall unit and the connection circuit unit and separately setting them, the volume of the Hall circuit board can be reduced, and the area blocked on the air flow path provided by the heat dissipation unit can be reduced. The heat dissipation effect of the electric motor and electric tool can be improved.

且本發明之結構設計之另一特色在於：於組裝電動馬達時，可改變該霍爾電路板的設置角度，進而可調整該馬達的轉速，不需更換任何零件或硬體設備。And another feature of the structural design of the present invention is that when assembling the electric motor, the setting angle of the Hall circuit board can be changed, and the rotation speed of the motor can be adjusted without replacing any parts or hardware equipment.

在本發明被詳細描述前，應當注意在以下的說明內容中，類似的元件是以相同的編號來表示。 Before the present invention is described in detail, it should be noted that in the following description, similar elements are represented by the same numbers.

參閱圖4、圖5及圖7，本發明電動工具之第一較佳實施例，包含一外殼單元2、一電動馬達3、一霍爾單元4、一結線電路單元5、一控制單元6、一電池單元7、一散熱單元8及一設置於該外殼單元2且供該電動馬達3驅動的工具頭201，如圖15所示，使工具頭產生轉動輸出以轉動工件。其中，該工具頭非本案之技術特徵，因此，在此不多做說明。 4, 5 and 7, the first preferred embodiment of the electric tool of the present invention includes a housing unit 2, an electric motor 3, a Hall unit 4, a wiring circuit unit 5, a control unit 6, A battery unit 7, a heat dissipation unit 8, and a tool head 201 arranged on the housing unit 2 and driven by the electric motor 3, as shown in FIG. 15, make the tool head generate a rotation output to rotate the workpiece. Among them, the tool head is not a technical feature of this case, so I won't explain it here.

參閱圖3、圖4及圖5，該外殼單元2包括一第一外殼21、一與該第一外殼21相配合並界定一設置空間24供該電動馬達3、該霍爾單元4與該結線電路單元5設置的第二外殼22，及一設置於該第一外殼21與該第二外殼22中且供該霍爾單元4設置的支架23。 3, 4, and 5, the housing unit 2 includes a first housing 21, a first housing 21 that matches with the first housing 21 and defines a space 24 for the electric motor 3, the Hall unit 4, and the connection The second housing 22 provided for the circuit unit 5 and a bracket 23 provided in the first housing 21 and the second housing 22 for the Hall unit 4 to be provided.

該第一外殼21與該第二外殼22分別具有一供該支架23兩端卡設的支架槽211、221。 The first housing 21 and the second housing 22 respectively have bracket slots 211 and 221 for clamping two ends of the bracket 23.

該支架23具有一供該霍爾單元4之霍爾電路板41設置且呈環狀的本體部231，及二由該本體部231向外延伸且分別卡設於該第一外殼21與該第二外殼22之支架槽211、221的支架部232。該本體部231具有複數卡扣件233。其中，該支架23亦可依實際需求而包含三、四或五以上數量的支架部232，不以此為限。 The bracket 23 has a ring-shaped body portion 231 for the Hall circuit board 41 of the Hall unit 4, and two body portions 231 that extend outward from the body portion 231 and are respectively clamped on the first housing 21 and the second housing 21. The bracket portions 232 of the bracket grooves 211 and 221 of the casing 22. The main body 231 has a plurality of fasteners 233. Wherein, the bracket 23 can also include three, four, or five or more bracket portions 232 according to actual needs, and is not limited to this.

參閱圖4、圖5及圖6，該電動馬達3包括一具有一轉軸311的轉子31、一環繞該轉子31的定子32，及一具有複數纏繞於該定子32的線圈332的線圈模組33。 4, 5 and 6, the electric motor 3 includes a rotor 31 having a rotating shaft 311, a stator 32 surrounding the rotor 31, and a coil module 33 having a plurality of coils 332 wound around the stator 32 .

該霍爾單元4與該散熱單元8沿該轉軸311之縱向間隔設置，包括一環繞該轉軸311並設置於該外殼單元2的霍爾電路板41，及一對應該轉子31且設置於該霍爾電路板41且用以感測該轉子31轉動的霍爾模組42。該霍爾電路板41具有複數分別供該等卡扣件233卡扣的卡扣槽411。該霍爾模組42具有三鄰近該轉子31設置的霍爾元件421。 The Hall unit 4 and the heat dissipation unit 8 are arranged at intervals along the longitudinal direction of the rotating shaft 311, and include a Hall circuit board 41 surrounding the rotating shaft 311 and disposed on the housing unit 2, and a corresponding rotor 31 and disposed on the Hall circuit board. The circuit board 41 is used for sensing the rotation of the rotor 31 and the Hall module 42. The Hall circuit board 41 has a plurality of buckle grooves 411 for buckling the buckles 233 respectively. The Hall module 42 has three Hall elements 421 disposed adjacent to the rotor 31.

該結線電路單元5包括一獨立於該霍爾電路板41且環繞該轉軸311的結線電路板51、一設置於該結線電路板51的結線電路52，及設置於該結線電路板51的一個三相之電源接口53，該結線電路52電連接該線圈模組33的該等線圈332且使該等線圈332分組電電連接至該等電源接口53，該等電源接口53用以接收三相之電源輸入。於本實施例中，該結線電路板51呈環狀且間隔一間隙54環設於該霍爾電路板41外圍，但該結線電路板51與該霍爾電路板41亦可以是沿該轉軸311的縱向間隔設置，如此雖會增加電動馬達的長度及體積，但能獲得更佳的通風散熱效果。The connecting circuit unit 5 includes a connecting circuit board 51 independent of the Hall circuit board 41 and surrounding the rotating shaft 311, a connecting circuit 52 arranged on the connecting circuit board 51, and a three connecting circuit board arranged on the connecting circuit board 51. The connection circuit 52 is electrically connected to the coils 332 of the coil module 33 and the coils 332 are electrically connected to the power interfaces 53 in groups. The power interfaces 53 are used to receive three-phase power enter. In this embodiment, the connecting circuit board 51 is ring-shaped and is arranged around the Hall circuit board 41 with a gap 54. However, the connecting circuit board 51 and the Hall circuit board 41 may also be along the rotation axis 311 Longitudinal spacing setting, this will increase the length and volume of the electric motor, but it can get better ventilation and heat dissipation.

參閱圖5、圖6及圖7，該控制單元6設置於該外殼單元2內，位於外殼單元所形成的握把部20之處，並電連接該電動馬達3、該霍爾單元4與該電池單元7，且位於該電動馬達3與該電池單元7間。該控制單元6具有一電路單元，包括一印刷電路板（PCB）、複數電源開關元件（未示）及一觸動開關（未示）。前述之霍爾電路板41及結線電路板51亦與該控制單元6之電路單元電連接。該控制單元6之電路單元包括設置該等電源開關元件之一驅動迴路（第一迴路電路）及一控制迴路（第二迴路電路）。所述之電源開關元件可為MOSFET電晶體（金屬氧化物半導體場效電晶體）或IGBT電晶體（絕緣閘極雙極性電晶體），設置於該控制單元6之印刷電路板上。該驅動迴路中之電源開關元件控制該電動馬達3之作動；該控制迴路則是控制該驅動迴路中之電源開關元件之ON/OFF。藉此，該控制單元6會根據該霍爾模組42所檢知之訊號而切換該等電源開關元件之ON/OFF(開/關)，藉以控制該電動馬達3之運轉。Referring to Figures 5, 6 and 7, the control unit 6 is arranged in the housing unit 2, at the grip portion 20 formed by the housing unit, and is electrically connected to the electric motor 3, the Hall unit 4 and the The battery unit 7 is located between the electric motor 3 and the battery unit 7. The control unit 6 has a circuit unit, including a printed circuit board (PCB), a plurality of power switch elements (not shown), and a touch switch (not shown). The aforementioned Hall circuit board 41 and the connection circuit board 51 are also electrically connected to the circuit unit of the control unit 6. The circuit unit of the control unit 6 includes a drive loop (first loop circuit) and a control loop (second loop circuit) for setting the power switch elements. The power switching element can be a MOSFET transistor (metal oxide semiconductor field effect transistor) or an IGBT transistor (insulated gate bipolar transistor), which is arranged on the printed circuit board of the control unit 6. The power switch element in the drive loop controls the action of the electric motor 3; the control loop controls the ON/OFF of the power switch element in the drive loop. Thereby, the control unit 6 will switch the power switch elements ON/OFF (on/off) according to the signal detected by the Hall module 42 to control the operation of the electric motor 3.

該電池單元7設置於該外殼單元2的下側，較佳是位於使用者握持處下方，並用以提供電源。該電池單元7係供電於該控制單元6之控制迴路與驅動迴路，及其他需要電力的電子零件，例如LED燈、液晶螢幕等。按壓該觸動開關可啟動或停止該電動工具。The battery unit 7 is arranged on the lower side of the housing unit 2, preferably under the grip of the user, and is used to provide power. The battery unit 7 supplies power to the control circuit and drive circuit of the control unit 6, and other electronic components that require power, such as LED lights, liquid crystal screens, and so on. Press the tact switch to start or stop the electric tool.

該散熱單元8對應於該電動馬達3且設置於該外殼單元2內部，並設置於該電動馬達3相反於該霍爾單元4與該結線電路單元5的一側，用以提供該電動馬達3風流以進行散熱。其中，該散熱單元8較佳為風扇。The heat dissipation unit 8 corresponds to the electric motor 3 and is arranged inside the housing unit 2, and is arranged on the side of the electric motor 3 opposite to the Hall unit 4 and the connection circuit unit 5 to provide the electric motor 3 Air flow for heat dissipation. Among them, the heat dissipation unit 8 is preferably a fan.

參閱圖4、圖5及圖6，經由以上的說明，可將本實施例的優點歸納如下：4, 5, and 6, through the above description, the advantages of this embodiment can be summarized as follows:

一、藉由將該霍爾單元4與該結線電路單元5拆開獨立設置，可以減少該霍爾電路板41的體積，減少阻擋在該散熱單元8所提供的風流路徑上之面積，故能提高該電動馬達3的散熱效果。1. By disassembling the Hall unit 4 and the connecting circuit unit 5 and setting them independently, the volume of the Hall circuit board 41 can be reduced, and the area blocked on the air flow path provided by the heat dissipation unit 8 can be reduced. The heat dissipation effect of the electric motor 3 is improved.

再者，藉由將該結線電路52設置於與該霍爾電路板41獨立的該結線電路板51上，可以將該霍爾電路板41與該結線電路板51皆製作為體積較小的電路板，由圖6中可見，即便是為了縮減電動馬達的縱向長度及體積而將該兩者41、51設置於電動馬達的同一側（前側）且呈內、外圈設置，該兩者間仍然可以藉由該間隙54(形成於結線電路板的內周緣及該霍爾電路板的外周緣之間的間隙)供風流流通，而具有較習知技術優異的散熱效果。Furthermore, by disposing the connecting circuit 52 on the connecting circuit board 51 that is independent of the Hall circuit board 41, both the Hall circuit board 41 and the connecting circuit board 51 can be made into smaller circuits. The plate, as can be seen in Figure 6, even if the two 41, 51 are arranged on the same side (front side) of the electric motor and arranged in the inner and outer rings in order to reduce the longitudinal length and volume of the electric motor, the space between the two is still The gap 54 (a gap formed between the inner periphery of the wiring circuit board and the outer periphery of the Hall circuit board) can be used for air flow to circulate, and it has a better heat dissipation effect than the conventional technology.

參閱圖8、圖9及圖10，為本發明電動工具的第二較佳實施例，本實施例是類似於該第一實施例，其與該第一實施例的差異在於：該外殼單元2包括相配合之一第一馬達蓋體與一第二馬達蓋體，例如一馬達前蓋25及一馬達後蓋26，該二者25、26之間界定一馬達空間28供該電動馬達3與該霍爾單元4設置，該霍爾電路板41係裝設在該二馬達蓋體其中之一。本實施例以複數定位件27穿設該霍爾電路板41，將該霍爾電路板41組裝於馬達後蓋26，其中，每一定位件27較佳為螺絲，可旋鬆、旋緊及拆卸。 Refer to Figures 8, 9 and 10, which are the second preferred embodiment of the electric tool of the present invention. This embodiment is similar to the first embodiment, and the difference from the first embodiment is: the housing unit 2 It includes a matching first motor cover and a second motor cover, such as a motor front cover 25 and a motor rear cover 26. A motor space 28 is defined between the two 25 and 26 for the electric motor 3 and The Hall unit 4 is provided, and the Hall circuit board 41 is installed on one of the two motor covers. In this embodiment, a plurality of positioning members 27 are used to pass through the Hall circuit board 41, and the Hall circuit board 41 is assembled to the motor back cover 26. Each positioning member 27 is preferably a screw, which can be loosened, tightened, and Disassemble.

參閱圖9、圖11及圖12，該定子32具有一呈筒狀之軛部321、六極柱部322，以適當角度(例如等間隔)環狀設置於該軛部321之內周面，及一沿該軛部321之縱向設置於該軛部321其中一端的繞線架部323。為說明清楚起見，該等極柱部322於圖12中依一纏繞方向X分別標示為322a~322f。 Referring to FIGS. 9, 11 and 12, the stator 32 has a cylindrical yoke 321 and a hexapole 322, which are annularly arranged on the inner peripheral surface of the yoke 321 at appropriate angles (for example, at equal intervals). And a bobbin part 323 disposed at one end of the yoke part 321 along the longitudinal direction of the yoke part 321. For clarity of description, the pole portions 322 are respectively marked as 322a to 322f in a winding direction X in FIG. 12.

該線圈模組33具有六分別繞設於該等極柱部322的線圈332、一連接該等線圈332且繞設於該繞線架部323的環繞部333，及三由該環繞部333延伸且分別作為該等電源接口53的接線部334。為說明清楚起見，該等線圈332於圖12中依該纏繞方向X分別標示為332a~332f，該等接線部334於圖12中依該纏繞方向X分別標示為334a~334c。其中，於該電動馬達3尚未組裝完成時，該線圈模組33還具有二自由端部335，該二自由端部335將於該電動馬達3組裝完成後剪去。 The coil module 33 has six coils 332 respectively wound around the pole portions 322, a surrounding portion 333 connected to the coils 332 and wound on the bobbin portion 323, and three coils 332 extending from the surrounding portion 333 And respectively serve as the connection parts 334 of the power interfaces 53. For clarity of description, the coils 332 are respectively marked as 332a to 332f in FIG. 12 according to the winding direction X, and the connecting portions 334 are respectively marked as 334a to 334c according to the winding direction X in FIG. 12. Wherein, when the electric motor 3 is not yet assembled, the coil module 33 also has two free ends 335, and the two free ends 335 will be Cut off the motor 3 after assembly.

於本實施例中，該等極柱部322及該等線圈332之數量為六，但本技術領域中具有通常知識者亦可依實際需求而變化其數量為12、24、36等一般三相馬達常見之極數，不以此為限。 In this embodiment, the number of the pole portions 322 and the coils 332 is six, but those skilled in the art can also change the number to 12, 24, 36, etc. for general three-phase horses according to actual needs. The number of common poles is not limited to this.

該霍爾電路板41對應該轉子31設置於該馬達後蓋26，且具有複數分別供該等定位件27穿設的穿設孔412。 The Hall circuit board 41 is disposed on the motor back cover 26 corresponding to the rotor 31 and has a plurality of through holes 412 for the positioning members 27 to pass through.

該結線電路單元5還包括一設置於該繞線架部323的短路片55，該短路片55夾壓於該環繞部333而使該等線圈332電連接。該短路片55較佳是具有一設置於該繞線架部323的設置部521，及二由該設置部521延伸且用以夾壓該環繞部333的夾壓部522，該短路片55較佳是透過點焊或夾壓之接觸方式電連接該環繞部333，進而使該等線圈332電連接。 The wiring circuit unit 5 further includes a short-circuit piece 55 disposed on the winding frame portion 323, and the short-circuit piece 55 is clamped on the surrounding portion 333 to electrically connect the coils 332. The short-circuit piece 55 preferably has a setting portion 521 disposed on the bobbin portion 323, and two clamping portions 522 extending from the setting portion 521 and used to clamp the surrounding portion 333. The short-circuit piece 55 is more Preferably, the surrounding portion 333 is electrically connected by spot welding or crimping contact, so that the coils 332 are electrically connected.

該電動馬達3之該等線圈332使用一條具導電性的線繞設方式製作，該線的繞設方式是先由圖12中右側之該自由端部335開始，沿該纏繞方向X由該短路片55位置進入，接著依序纏繞於該極柱部322a、形成該接線部334a、纏繞於該極柱部322d，再經過該短路片55、纏繞於該極柱部322b、形成該接線部334b、纏繞於該極柱部322e，再經過該短路片55、纏繞於該極柱部322c、形成該接線部334c、纏繞於該極柱部322f、經過該短路片55，最後形成圖12左側之該自由端部335。詳言之，以該X方向為準，該線先纏纏繞於第一極柱部322a及第四極柱部322d及形成該第一接線部334a，接著纏繞於第二極柱部322b及第五極柱部322e及形成該第二接線部334b，最後再纏繞於第三極柱部322c及第六極柱部322f並形成該第三接線部334c。其中，為說明清楚起見，於圖11中，該線之環繞部333係四次纏繞經過該短路片55，該環繞部333於該短路片55形成四個接點，依繞線順序分別標示為333a~333d。The coils 332 of the electric motor 3 are made by a conductive wire winding method. The wire winding method starts from the free end 335 on the right side in FIG. 12, and starts from the short circuit along the winding direction X. The position of the sheet 55 enters, and then it is wound around the pole portion 322a, forming the wiring portion 334a, wound on the pole portion 322d, and then passed through the short-circuit sheet 55, wound on the pole portion 322b, forming the wiring portion 334b , Wound on the pole portion 322e, and then through the short-circuit piece 55, wound on the pole portion 322c, forming the terminal portion 334c, wound on the pole portion 322f, passing the short-circuit piece 55, and finally form the left side of Figure 12 The free end 335. In detail, based on the X direction, the wire is first wound around the first pole portion 322a and the fourth pole portion 322d to form the first wiring portion 334a, and then wound around the second pole portion 322b and the first pole portion 322d. The pentapole portion 322e and the second wiring portion 334b are formed, and finally wound around the third pole portion 322c and the sixth pole portion 322f to form the third wiring portion 334c. Wherein, for clarity of description, in FIG. 11, the surrounding portion 333 of the wire is wound four times through the short-circuit piece 55, and the surrounding portion 333 forms four contacts on the short-circuit piece 55, which are respectively labeled according to the winding sequence It is 333a~333d.

完成該線圈模組33之繞設後，將該短路片55之該等夾壓部522向上夾壓該環繞部333，並將該環繞部333上之四個接點333a~333d都以點焊方式進行電連接，如此，可使該線圈模組33形成如圖13所示之Y型連接之型式，其中，該短路片55即為該Y型連接之中心連接點O。After completing the winding of the coil module 33, the clamping portions 522 of the short-circuit sheet 55 upwardly press the surrounding portion 333, and the four contacts 333a~333d on the surrounding portion 333 are all spot welded In this way, the coil module 33 can be formed into a Y-shaped connection type as shown in FIG. 13, wherein the short-circuit strip 55 is the central connection point O of the Y-shaped connection.

參閱圖9、圖10及圖11，如此，該第二較佳實施例除了可以藉由將該霍爾單元4與該結線電路單元5拆開獨立設置，而達到減少該霍爾電路板41的體積、減少阻擋在該散熱單元8所提供的風流路徑上之面積，進而提高該電動馬達3的散熱效果外，還能藉由上述繞線方式、設置該短路片55電連接該等線圈332，並以該等接線部334作為馬達的三相的電源接口53，而能省略該第一較佳實施例中之該結線電路板51(見圖4)的設置，如此，能使該散熱單元8的風道上只剩下該霍爾電路板41，故能大幅增加可流通的風量，進而得到更好的散熱效果。Referring to FIGS. 9, 10, and 11, in this second preferred embodiment, apart from disassembling the Hall unit 4 and the connection circuit unit 5 and setting them independently, it can reduce the cost of the Hall circuit board 41. In addition to reducing the volume and reducing the area blocked on the air flow path provided by the heat dissipation unit 8, thereby improving the heat dissipation effect of the electric motor 3, the short-circuit sheet 55 can also be electrically connected to the coils 332 by the above-mentioned winding method. And the connection parts 334 are used as the three-phase power interface 53 of the motor, and the arrangement of the connection circuit board 51 (see FIG. 4) in the first preferred embodiment can be omitted, so that the heat dissipation unit 8 Only the Hall circuit board 41 is left in the air duct, so the air volume that can be circulated can be greatly increased, and a better heat dissipation effect can be obtained.

參閱圖8，該馬達後蓋26設置三導電片261，分別與該三接線部334(53)電連接，俾該電動馬達裝入該前、後蓋25、26後便於透過該三導電片216連接線路。此外，該後蓋26設有一開口262，供短路片55、夾壓部522及環繞部333露出。Referring to FIG. 8, the motor rear cover 26 is provided with three conductive sheets 261, which are respectively electrically connected to the three wiring portions 334 (53), so that the electric motor is installed in the front and rear covers 25, 26 to facilitate the penetration of the three conductive sheets 216 Connect the line. In addition, the rear cover 26 is provided with an opening 262 for exposing the short circuit piece 55, the clamping portion 522 and the surrounding portion 333.

參閱圖14，為該霍爾電路板41的另一種實施態樣，於此態樣中，每一穿設孔412繞該轉軸311之延伸長度大於對應之定位件27的徑向寬度，藉此，可以於組裝時順時針或逆時針微調該霍爾電路板41的設置角度，亦即，可調整該霍爾電路板相對於該定子的軛部的角位置，如此，可以改變該電動馬達3的切換角度，進而使該電動馬達3的轉速改變，其轉速的調整範圍約為5~10%，如此，可在不需要更換任何硬體設備的情況下，僅藉由調整該霍爾電路板41的設置角度，即達到微調轉速的效果。於實際應用上，可以藉由實驗而得出每一系列之產品的最佳角度，再以此最佳角度進行組裝，而得到可針對各系列產品進行最佳化調整之功效。Refer to FIG. 14, which is another implementation aspect of the Hall circuit board 41. In this aspect, the extension length of each through hole 412 around the rotating shaft 311 is greater than the radial width of the corresponding positioning member 27, thereby , The installation angle of the Hall circuit board 41 can be fine-tuned clockwise or counterclockwise during assembly, that is, the angular position of the Hall circuit board relative to the yoke of the stator can be adjusted, so that the electric motor 3 can be changed. The switching angle of the electric motor 3 changes the rotation speed of the electric motor 3, and the adjustment range of the rotation speed is about 5~10%. In this way, it is possible to adjust the Hall circuit board without changing any hardware equipment. The setting angle of 41 achieves the effect of fine-tuning the speed. In practical applications, the best angle of each series of products can be obtained through experiments, and then assembled at the best angle to obtain the effect that can be optimized for each series of products.

請參閱圖15，為本發明之電動工具之第三較佳實施例，本實施例可為前述第一或第二較佳實施例所示之結構，並進一步將該控制單元6之電路單元拆分成電連接之一第一迴路單元與一第二迴路單元，該第一迴路單元包括一第一電路板61，係一MOS電路板，其一面設有前述之驅動迴路（第一迴路電路），以及若干電源開關元件，為MOSFET電晶體或IGBT電晶體(未示)，裝設於該第一電路板61之驅動迴路。該第二迴路單元包括一第二電路板64，為一控制板，設有前述之控制迴路（第二迴路電路），該控制單元6之觸動開關65設於該握柄部20之處，並與該控制迴路電連接，藉由按壓或釋放該觸動開關65以啟動或停止該電動工具。本實施例將該第一電路板61及第二電路板64分別設置於該觸動開關65的上側與下側，保持間隔。Please refer to FIG. 15, which is a third preferred embodiment of the electric tool of the present invention. This embodiment can be the structure shown in the first or second preferred embodiment, and the circuit unit of the control unit 6 is further disassembled It is divided into a first loop unit and a second loop unit electrically connected. The first loop unit includes a first circuit board 61, which is a MOS circuit board, on one side of which is provided with the aforementioned drive circuit (first loop circuit) , And a number of power switching elements, which are MOSFET transistors or IGBT transistors (not shown), are installed in the driving circuit of the first circuit board 61. The second loop unit includes a second circuit board 64, which is a control board, and is provided with the aforementioned control loop (second loop circuit). The touch switch 65 of the control unit 6 is provided at the handle portion 20, and It is electrically connected with the control circuit, and the electric tool is started or stopped by pressing or releasing the tact switch 65. In this embodiment, the first circuit board 61 and the second circuit board 64 are respectively arranged on the upper side and the lower side of the tact switch 65 to maintain a gap.

此外，由於電源開關元件會發熱，該第一電路板61之一面係以導熱矽膠黏貼一散熱板62，例如一散熱鰭片，該散熱板62及導熱矽膠有助於該第一電路板61散熱。In addition, since the power switch element generates heat, a heat dissipation plate 62, such as a heat dissipation fin, is adhered to one surface of the first circuit board 61 with thermally conductive silicon glue. The heat sink 62 and the thermally conductive silicon glue help the first circuit board 61 to dissipate heat. .

圖16為本發明之電動工具之第四較佳實施例，本實施例概與第三實施例相同，相同元件並沿用相同的標號，容不贅述。本實施例同樣將控制單元6設置成獨立的、保持間隔的第一電路板61（具有該驅動迴路）及第二電路板64（具有該控制迴路），該二電路板61、64係位於該外殼單元2之握柄部20之處。更明確而言，該二電路板係併列於該觸動開關65與該電池單元7之間。Fig. 16 is a fourth preferred embodiment of the electric tool of the present invention. This embodiment is basically the same as the third embodiment, and the same components are used with the same reference numerals, and no further description is needed. In this embodiment, the control unit 6 is also set up as an independent first circuit board 61 (with the drive circuit) and a second circuit board 64 (with the control circuit) that are spaced apart. The two circuit boards 61 and 64 are located on the The handle portion 20 of the housing unit 2. More specifically, the two circuit boards are juxtaposed between the tact switch 65 and the battery unit 7.

上述第三及第四實施例將MOS板（即第一電路板）與控制板（即第二電路板）分開設置，一方面能更有效地對電源開關元件散熱，另一方面使控制板上的電子元件遠離電源開關元件，避免受電源開關元件的熱影響，以確保控制板的電子元件正常運作及較長的使用壽命。The third and fourth embodiments described above separate the MOS board (i.e., the first circuit board) and the control board (i.e., the second circuit board). On the one hand, it can more effectively dissipate the power switch components, and on the other hand, it can make the control board The electronic components are far away from the power switch components to avoid the thermal influence of the power switch components to ensure the normal operation and long service life of the electronic components of the control board.

再者，由於將控制單元製成第一及第二電路板，散熱板62只需製成第一電路板(MOS板)的大小，可減少散熱板的之體積與成本。Furthermore, since the control unit is made into the first and second circuit boards, the heat sink 62 only needs to be made into the size of the first circuit board (MOS board), which can reduce the volume and cost of the heat sink.

本發明將該控制單元6製成獨立的第一電路板61與第二電路板64的實益在於：讓控制單元的實體可因應不同形式的電池及電動工具的內部空間而變化其裝設位置。以圖15及圖16為例，圖15的電池單元7為插接式的電池，插接於握柄部20的末端，使用此類電池者，握柄部20之處的內部空間較為狹小，適於將該二電路板61、64分開設置於該觸動開關65的上側與下側。而圖16的電池單元7為滑接式的電池，滑動地裝設於握柄部20末端，該握柄部20之處的內部空間較為寬裕，適於將該二電路板61、64併置於該握柄部中。The present invention has the advantage of making the control unit 6 into an independent first circuit board 61 and a second circuit board 64 to allow the entity of the control unit to change its installation position according to the internal space of different types of batteries and electric tools. Taking FIGS. 15 and 16 as an example, the battery unit 7 in FIG. 15 is a plug-in type battery that is inserted into the end of the handle portion 20. Those who use this type of battery have a relatively small internal space at the handle portion 20. It is suitable for the two circuit boards 61 and 64 to be separately arranged on the upper and lower sides of the tact switch 65. The battery unit 7 in FIG. 16 is a sliding battery, which is slidably installed at the end of the handle portion 20. The handle portion 20 has a relatively large internal space and is suitable for placing the two circuit boards 61, 64 in parallel. The handle part.

本發明將電動馬達之霍爾單元及結線電路單元分開設置，確實能達成本發明的提高散熱效果之目的。且本發明之結構設計亦利於調整電動馬達之轉速，進而調整電動工具之轉動輸出。The invention separates the Hall unit and the connection circuit unit of the electric motor, which can indeed achieve the purpose of improving the heat dissipation effect of the invention. In addition, the structural design of the present invention is also beneficial to adjust the rotation speed of the electric motor, thereby adjusting the rotation output of the electric tool.

本發明所揭示之電動馬達除了可應用於電動工具外，亦可應用於其他具有旋轉輸出的電動器械或設備，例如但不以此為限，電動自行車、電動摩托車、電動割草機等。In addition to being applied to electric tools, the electric motor disclosed in the present invention can also be applied to other electric appliances or equipment with rotation output, such as, but not limited to, electric bicycles, electric motorcycles, electric lawn mowers, etc.

以上所述者，僅為本發明的實施例而已，當不能以此限定本發明實施的範圍，凡是依本發明申請專利範圍及專利說明書內容所作的簡單的等效變化與修飾，皆仍屬本發明專利涵蓋的範圍內。The above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to the present invention. The scope of invention patents.

2:外殼單元 20:握柄部 201:工具頭 21:第一外殼 211:支架槽 22:第二外殼 221:支架槽 23:支架 231:本體部 232:支架部 233:卡扣件 24:設置空間 25:馬達前蓋 26:馬達後蓋 261:導電片 261:開口 27:定位件 28:馬達空間 3:電動馬達 31:轉子 311:轉軸 32:定子 321:軛部 322:極柱部 322a~322f:極柱部 323:繞線架部 33:線圈模組 332:線圈 332a~332f:線圈 333:環繞部 333a~333d:環繞部接點 334:接線部 334a~334c:接線部 335:自由端部 4:霍爾單元 41:霍爾電路板 411:卡扣槽 412:穿設孔 42:霍爾模組 421:霍爾元件 5:結線電路單元 51:結線電路板 52:結線電路 53:電源接口 54:間隙 55:短路片 521:設置部 522:夾壓部 6:控制單元 61:第一電路板 62:散熱板 64:第二電路板 65:觸動開關 7:電池單元 8:散熱單元 X:纏繞方向 O:中心連接點 2: housing unit 20: Grip 201: Tool head 21: The first shell 211: bracket slot 22: second shell 221: bracket slot 23: bracket 231: Body 232: Bracket 233: Clip 24: setting space 25: Motor front cover 26: Motor back cover 261: conductive sheet 261: open 27: Positioning piece 28: Motor space 3: electric motor 31: Rotor 311: shaft 32: stator 321: Yoke 322: pole 322a~322f: pole part 323: Winding Frame Department 33: Coil module 332: Coil 332a~332f: coil 333: Surround part 333a~333d: Surround contact 334: Wiring Department 334a~334c: Wiring section 335: free end 4: Hall unit 41: Hall circuit board 411: Snap Slot 412: piercing hole 42: Hall module 421: Hall element 5: Connection circuit unit 51: Connection circuit board 52: Connection circuit 53: power interface 54: gap 55: short circuit 521: Setting Department 522: Clamping part 6: Control unit 61: The first circuit board 62: heat sink 64: second circuit board 65: Touch switch 7: Battery unit 8: Cooling unit X: winding direction O: Central connection point

本發明的其他的特徵及功效，將於參照圖式的實施方式中清楚地呈現，其中：圖1及圖2是習知一種電動工具的基本架構的一示意圖及一局部剖面圖；圖3是本發明之電動工具的第一較佳實施例的一不完整的立體示意圖；圖4是本發明第一較佳實施例的電動工具及其電動馬達的一不完整的立體分解圖；圖5是該第一較佳實施例的電動馬達的一不完整的立體示意圖；圖6是沿圖5中之線VI-VI的一剖面示意圖；圖7是該第一較佳實施例的一不完整的示意圖，用以說明一控制單元的設置位置；圖8及圖9是本發明之電動工具及其電動馬達的第二較佳實施例的一不完整的立體示意圖及一分解圖；圖10是該第二較佳實施例的電動馬達沿圖8中之線X-X的一剖面示意圖；圖11、12是該第二較佳實施例的電動馬達的不完整示意圖，用以說明一線圈模組的繞線方式；圖13是該第二較佳實施例的該線圈模組的一電路示意圖；及圖14是該第二較佳實施例的電動馬達的一不完整分解圖，用以說明霍爾電路板的另一種樣態。 Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: 1 and 2 are a schematic diagram and a partial cross-sectional view of the basic structure of a conventional electric tool; Fig. 3 is an incomplete perspective view of the first preferred embodiment of the electric tool of the present invention; 4 is an incomplete three-dimensional exploded view of the electric tool and its electric motor according to the first preferred embodiment of the present invention; Fig. 5 is an incomplete perspective view of the electric motor of the first preferred embodiment; Figure 6 is a schematic cross-sectional view taken along the line VI-VI in Figure 5; FIG. 7 is an incomplete schematic diagram of the first preferred embodiment to illustrate the location of a control unit; 8 and 9 are an incomplete three-dimensional schematic diagram and an exploded view of the second preferred embodiment of the electric tool and its electric motor of the present invention; 10 is a schematic cross-sectional view of the electric motor of the second preferred embodiment along the line X-X in FIG. 8; 11 and 12 are incomplete schematic diagrams of the electric motor of the second preferred embodiment to illustrate the winding method of a coil module; FIG. 13 is a schematic diagram of a circuit of the coil module of the second preferred embodiment; and FIG. 14 is an incomplete exploded view of the electric motor of the second preferred embodiment, to illustrate another hall circuit board A way.

圖15為本發明之電動工具之第三較佳實施例之一不完整的視圖。 Figure 15 is an incomplete view of the third preferred embodiment of the power tool of the present invention.

圖16為本發明之電動工具之第四較佳實施例之一不完整的視圖。 Figure 16 is an incomplete view of the fourth preferred embodiment of the power tool of the present invention.

2:外殼單元 2: housing unit

20:握柄部 20: Grip

21:第一外殼 21: The first shell

211:支架槽 211: bracket slot

22:第二外殼 22: second shell

221:支架槽 221: bracket slot

23:支架 23: bracket

231:本體部 231: Body

24:設置空間 24: setting space

3:電動馬達 3: electric motor

4:霍爾單元 4: Hall unit

41:霍爾電路板 41: Hall circuit board

411:卡扣槽 411: Snap Slot

42:霍爾模組 42: Hall module

421:霍爾元件 421: Hall element

5:結線電路單元 5: Connection circuit unit

232:支架部 232: Bracket

233:卡扣件 233: Clip

51:結線電路板 51: Connection circuit board

8:散熱單元 8: Cooling unit

Claims

一種電動馬達，包含有：一具有一轉軸的轉子；一定子，環繞該轉子，該轉子可於該定子中轉動；一線圈模組，具有複數纏繞於該定子的線圈；一霍爾單元，包括一環繞該轉子的轉軸設置之霍爾電路板，及一對應該轉子設置於該霍爾電路板且用以感測該轉子轉動的霍爾模組；及一結線電路單元，獨立於該霍爾電路板並包括一個三相之電源接口，該結線電路單元電連接該等線圈且使該等線圈分組電連接至該等電源接口。 An electric motor includes: a rotor with a rotating shaft; a stator that surrounds the rotor and the rotor can rotate in the stator; a coil module with a plurality of coils wound around the stator; and a Hall unit, including A Hall circuit board arranged around the rotation axis of the rotor, and a pair of Hall modules arranged on the Hall circuit board corresponding to the rotor and used for sensing the rotation of the rotor; and a wiring circuit unit independent of the Hall The circuit board also includes a three-phase power interface, and the connection circuit unit electrically connects the coils and groups the coils to the power interfaces.

如請求項1所述的電動馬達，其中，該結線電路單元包括：一獨立於該霍爾電路板且環繞該轉軸的結線電路板，及一設置於該結線電路板的結線電路，該等電源接口設置於該結線電路板；該結線電路電連接該等線圈且使該等線圈分組電連接至該等電源接口。 The electric motor according to claim 1, wherein the connection circuit unit includes: a connection circuit board independent of the Hall circuit board and surrounding the rotating shaft, and a connection circuit provided on the connection circuit board, the power supplies The interface is arranged on the wiring circuit board; the wiring circuit is electrically connected to the coils and the coils are grouped and electrically connected to the power interfaces.

如請求項2所述的電動馬達，其中，該結線電路板與該霍爾電路板呈內、外圈設置。 The electric motor according to claim 2, wherein the wiring circuit board and the Hall circuit board are arranged in inner and outer circles.

如請求項3所述的電動馬達，其中，該結線電路板環設於該霍爾電路板的外圍，且該二者之間具有一間隔。 The electric motor according to claim 3, wherein the wiring circuit board is arranged around the periphery of the Hall circuit board, and there is a gap between the two.

如請求項1所述的電動馬達，其中，該定子具有一呈筒狀之軛部；複數極柱部，環設於該軛部之內周面，及一繞線架部，設於該軛部一端；該線圈模組之該等線圈分別繞設於該等極柱部；該線圈模組另具有一環繞部，連接該等線圈且繞設於該繞線架部，及三由該環繞部延伸且分別作為該等電源接口的接線部；該結線電路單元還包括一短路片，設置於該繞線架部，該短路片接觸該環繞部並使該等線圈電連接。 The electric motor according to claim 1, wherein the stator has a cylindrical yoke; a plurality of poles are arranged around the inner circumferential surface of the yoke, and a bobbin part is arranged on the yoke One end of the part; the coils of the coil module are respectively wound around the pole parts; the coil module has a surrounding part to connect the wires The wire is wound around the winding frame part, and three extending from the surrounding part and respectively serving as the connection parts of the power interfaces; the connection circuit unit also includes a short-circuit piece, which is arranged on the winding frame part, the short-circuit piece The surrounding parts are contacted and the coils are electrically connected.

如請求項5所述的電動馬達，其中，該等線圈、該環繞部及該三接線部係由一線所形成。 The electric motor according to claim 5, wherein the coils, the surrounding part and the three-wire part are formed by one wire.

如請求項1所述的電動馬達，其中，該霍爾電路板可調整其設置角度。 The electric motor according to claim 1, wherein the installation angle of the Hall circuit board can be adjusted.

如請求項1所述的電動馬達，另包含有：相配合之一第一馬達蓋體及一第二馬達蓋體；一馬達空間，形成於該二馬達蓋體之間；該電動馬達裝設於該馬達空間中。 The electric motor according to claim 1, further comprising: a first motor cover and a second motor cover that cooperate; a motor space formed between the two motor covers; the electric motor is installed In the motor space.

如請求項8所述的電動馬達，其中，該霍爾電路板具有複數穿設孔；另包含有：複數定位件，分別穿設於該等穿設孔，並可拆卸地連接於該第一或第二馬達蓋體其中之一，每一穿設孔繞該轉軸之延伸長度大於對應之定位件的徑向寬度。 The electric motor according to claim 8, wherein the Hall circuit board has a plurality of through holes; and further includes: a plurality of positioning members respectively penetrated through the through holes and detachably connected to the first Or in one of the second motor covers, the extension length of each through hole around the rotating shaft is greater than the radial width of the corresponding positioning member.

如請求項3所述的電動馬達，另包含有：相配合之一第一馬達蓋體及一第二馬達蓋體；一馬達空間，形成於該二馬達蓋體之間；三導電片，設於該第一或第二馬達蓋體其中之一；該三接線部分別電連接該三導電片。 The electric motor according to claim 3, further comprising: a first motor cover and a second motor cover that are matched; a motor space formed between the two motor covers; three conductive sheets, arranged At one of the first or second motor cover; the three wiring portions are respectively electrically connected to the three conductive sheets.

一種電動工具，包含：一外殼單元；一電池單元，設置於該外殼單元的下側；一電動馬達，設置於該外殼單元中，包括一具有一轉軸的轉子、一環繞該轉子的定子，及一具有複數纏繞於該定子的線圈的線圈模組；一散熱單元，對應於該電動馬達設置；一霍爾單元，與該散熱單元沿該轉軸之縱向間隔設置，包括一環繞該轉軸設置於該外殼單元的霍爾電路板，及一對應該轉子設置於該霍爾電路板且用以感測該轉子轉動的霍爾模組；一結線電路單元，獨立於該霍爾電路板並包括三相之電源接口，該結線電路單元電連接該等線圈且使該等線圈分組電連接至該等電源接口；及一控制單元，設置於該外殼單元內，電連接該電池單元、該電動馬達與該霍爾單元，且位於該電動馬達與該電池單元之間。An electric tool comprising: a housing unit; a battery unit arranged on the lower side of the housing unit; an electric motor arranged in the housing unit, including a rotor with a rotating shaft, a stator surrounding the rotor, and A coil module with a plurality of coils wound around the stator; A heat dissipation unit corresponding to the electric motor; A Hall unit, which is spaced apart from the heat dissipation unit along the longitudinal direction of the rotating shaft, includes a Hall circuit board disposed on the housing unit around the rotating shaft, and a corresponding rotor disposed on the Hall circuit board for sensing The Hall module for rotating the rotor; A wiring circuit unit, independent of the Hall circuit board and including a three-phase power interface, the wiring circuit unit is electrically connected to the coils and the coil groups are electrically connected to the power interfaces; and A control unit is arranged in the housing unit, electrically connected to the battery unit, the electric motor and the Hall unit, and is located between the electric motor and the battery unit.

如請求項11所述的電動工具，其中，該結線電路單元還包括一獨立於該霍爾電路板且環繞該轉軸的結線電路板，及一設置於該結線電路板的結線電路，該等電源接口設置於該結線電路板，該結線電路電連接該等線圈且使該等線圈分組電連接至該等電源接口。The electric tool according to claim 11, wherein the wiring circuit unit further includes a wiring circuit board independent of the Hall circuit board and surrounding the rotating shaft, and a wiring circuit provided on the wiring circuit board, the power supply The interface is arranged on the wiring circuit board, and the wiring circuit is electrically connected to the coils and the coils are grouped and electrically connected to the power interfaces.

如請求項11所述的電動工具，其中，該定子具有一呈筒狀之軛部、複數由該軛部之內周面向內延伸的極柱部，及一沿該軛部之縱向設置於該軛部其中一端的繞線架部，該線圈模組具有複數分別繞設於該等極柱部之線圈、一連接該等線圈且繞設於該繞線架部的環繞部，及三由該環繞部延伸且分別作為該等電源接口的接線部，該結線電路單元還包括一設置於該繞線架部的短路片，該短路片接觸該環繞部且使該等線圈電連接。The electric tool according to claim 11, wherein the stator has a cylindrical yoke, a plurality of poles extending inward from the inner circumferential surface of the yoke, and a longitudinal direction of the yoke. The bobbin part at one end of the yoke, the coil module has a plurality of coils respectively wound around the pole parts, a surrounding part connected with the coils and wound around the bobbin part, and three The surrounding portions extend and respectively serve as the connection portions of the power interfaces. The wiring circuit unit further includes a short-circuit piece arranged on the bobbin portion, and the short-circuit piece contacts the surrounding portion and electrically connects the coils.

如請求項11所述的電動工具，其中，該外殼單元包括一馬達前蓋及一與該馬達前蓋相配合界定一供該電動馬達與該霍爾單元設置的馬達空間的馬達後蓋，該霍爾電路板對應該轉子設置於該馬達後蓋或該馬達前蓋其中之一。The electric tool according to claim 11, wherein the housing unit includes a motor front cover and a motor rear cover that cooperates with the motor front cover to define a motor space for the electric motor and the Hall unit, the The Hall circuit board is arranged on one of the back cover of the motor or the front cover of the motor corresponding to the rotor.

如請求項14所述的電動工具，其中，該外殼單元另包括複數穿設該霍爾電路板並可拆卸地連接該馬達後蓋或該馬達前蓋其中之一的定位件，該霍爾電路板具有複數分別供該等定位件穿設的穿設孔，每一穿設孔繞該轉軸之延伸長度大於對應之定位件的徑向寬度。The electric tool according to claim 14, wherein the housing unit further includes a plurality of positioning members that pass through the Hall circuit board and can be detachably connected to one of the motor back cover or the motor front cover, and the Hall circuit The plate has a plurality of through holes respectively for the positioning members to penetrate, and the extension length of each through hole around the rotating shaft is greater than the radial width of the corresponding positioning member.

如請求項11所述的電動工具，其中，該外殼單元包括一第一外殼、一與該第一外殼相配合並界定一設置空間供該電動馬達與該霍爾單元設置的第二外殼，及一設置於該第一外殼與該第二外殼且供該霍爾電路板設置的支架。The electric tool according to claim 11, wherein the housing unit includes a first housing, a second housing that cooperates with the first housing and defines an installation space for the electric motor and the Hall unit to be installed, and A bracket arranged on the first shell and the second shell for the Hall circuit board.

如請求項16所述的電動工具，其中，該支架具有一供該霍爾電路板設置且呈環狀的本體部，及複數由該本體部向外延伸且卡設於該第一外殼與該第二外殼的支架部。The electric tool according to claim 16, wherein the bracket has a ring-shaped body part for the Hall circuit board to be installed, and a plurality of parts extend outward from the body part and are clamped on the first housing and the The bracket part of the second housing.

如請求項16所述的電動工具，其中，該支架之本體部具有複數卡扣件，該霍爾電路板具有複數分別供該等卡扣件卡扣的卡扣槽。The electric tool according to claim 16, wherein the main body of the bracket has a plurality of buckles, and the Hall circuit board has a plurality of buckle slots for the buckles to buckle, respectively.

如請求項11所述的電動工具，其中，該控制單元具有電連接之一第一迴路單元及一第二迴路單元，該二迴路單元係分開設置。The electric tool according to claim 11, wherein the control unit has a first circuit unit and a second circuit unit electrically connected, and the two circuit units are separately arranged.

如請求項19所述的電動工具，其中，該外殼單元具有一握柄部，位於該電動馬達及該電池單元之間；該控制單元具有一觸動開關，設於該握柄部；該第一迴路單元及該第二迴路單元分別位於該觸動開關的上下二側。The electric tool according to claim 19, wherein the housing unit has a handle portion located between the electric motor and the battery unit; the control unit has a tactile switch provided on the handle portion; the first The loop unit and the second loop unit are respectively located on the upper and lower sides of the tact switch.

如請求項19所述的電動工具，其中，該外殼單元具有一握柄部，位於該電動馬達及該電池單元之間；該控制單元具有一觸動開關，設於該握柄部；該第一迴路單元及該第二迴路單元位於該觸動開關與該電池單元之間。The electric tool according to claim 19, wherein the housing unit has a handle portion located between the electric motor and the battery unit; the control unit has a tactile switch provided on the handle portion; the first The loop unit and the second loop unit are located between the tact switch and the battery unit.

如請求項20或21所述的電動工具，其中，該第一迴路單元具有一第一電路板、一驅動迴路及複數設於該第一電板路之電源開關元件；該第二迴路單元具有一第二電路板及一控制迴路，控制該第一迴路單元之電源開關元件。The electric tool according to claim 20 or 21, wherein the first circuit unit has a first circuit board, a drive circuit, and a plurality of power switch elements provided on the first circuit; the second circuit unit has A second circuit board and a control loop control the power switch element of the first loop unit.

如請求項22所述的電動工具，其中，該第一電路板之一表面設一散熱板。The electric tool according to claim 22, wherein a heat sink is provided on a surface of the first circuit board.