CN201371283Y - Electric circular saw - Google Patents
Electric circular saw Download PDFInfo
- Publication number
- CN201371283Y CN201371283Y CN200920114915U CN200920114915U CN201371283Y CN 201371283 Y CN201371283 Y CN 201371283Y CN 200920114915 U CN200920114915 U CN 200920114915U CN 200920114915 U CN200920114915 U CN 200920114915U CN 201371283 Y CN201371283 Y CN 201371283Y
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- CN
- China
- Prior art keywords
- circular saw
- electric circular
- casing
- stator
- saw
- 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 - Fee Related
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Abstract
The utility model discloses an electric circular saw which can effectively solve the problems that the existing electric circular saw has large noise, can generate carbon-brush dust, and has fast carbon-brush wearing so as to cause the machine to have shorter service life and low whole efficiency. The electric circular saw comprises a case, a driving device, an output shaft, a saw blade, a handle, a brushless motor and a circuit controller, wherein one end of the driving device is connected with one end of the output shaft and the other end of the output shaft is provided with the saw blade; a stator of the brushless motor is fixed on the case; a rotor shaft of the brushless motor is arranged on the case by a rolling device; the rotor shaft is connected with the other end of the driving device; and the circuit controller is arranged on the case. The electric circular saw has the advantages that the brushless motor is adopted, the noise is small, no carbon-brush dust and no carbon-brushless wearing exist, the efficiency is improved by 30 percent, the service life of the machine is longer than that of a series motor by a plurality of times, the circuit controller can realize rotation blocking protection, overcurrent protection and overvoltage protection, and the cost can be saved by utilizing the case of the electric circular saw as the case of the brushless motor.
Description
Technical field
The utility model relates to a kind of electric tool, particularly a kind of electric circular saw.
Background technology
To be power with the motor drive the instrument that saw blade carries out the sawing operation by transmission mechanism with electric circular saw, has characteristics such as safe and reliable, rational in infrastructure, operating efficiency height.Be applicable to timber, fiberboard, plastics and flexible cable and similar material are carried out the sawing operation.
Existing electric circular saw mainly uses series excited machine, and series excited machine noise is bigger in use, and be subjected to structural limitations own, series excited machine need use carbon brush, carbon brush and slip ring surface contact, because the cause of spring pressure effect and elastic properties of materials distortion embeds direct contact portion mutually.When relative slip, because of rubbing action forms wearing and tearing.If the carbon brush particle is thick and stiff, or contain hard particles, mechanical wear is increased greatly just like diamond dust and so on.Simultaneously because contain a spot of cementite in the carbon brush, carborundum is the husky ashes of Buddha's warrior attendant, improving the anti-wear performance of brush, but also can make the collector ring surface pull into groove, in case form groove very harmful to motor.Carbon brush is non-metallic conduction material, and resistance coefficient is big, is 400 times of copper.The energy consumption height that resistance produces; Contact resistance, mechanical friction hear rate that the sliding friction conduction that continues produces, the resistance energy consumption that adds power up brush is converted into Gao Reyi wears out spring decompression and lead, causes loose contact, produces spark, has a strong impact on motor and normally moves.And carbon brush will rely on elastic force and slip ring surface contact, if too small carbon brush of pressure and slip ring surface contacts instability, causes electric arc easily, makes the commutator wear increase.Pressure is excessive, and the solids of brush finish is scraped the slip ring surface and cut seriously, and mechanical wear is increased.And existing electric circular saw can't work under the situation of civil power not having, and restricted its use.
The utility model content
The purpose of this utility model is to provide a kind of electric circular saw, and it is big effectively to solve existing electric circular saw noise, can produce the carbon brush dust, and the carbon brush quick abrasion causes machine shorter service life, the problem that whole efficiency is not high.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions: a kind of electric circular saw, comprise casing, transmission device, output shaft, saw blade, handle, brushless electric machine and circuit controller, one end of described transmission device links to each other with an end of output shaft, the other end of described output shaft is provided with saw blade, the stator of described brushless electric machine is fixed on the casing, the armature spindle of described brushless electric machine is arranged on the casing by tourelle, described armature spindle links to each other with the other end of transmission device, and described circuit controller is arranged on the casing.
Preferably, described casing is provided with ventilating opening, and the two ends that an end of described armature spindle is provided with fan blade or armature spindle are provided with fan blade; Armature spindle drives fan blade and rotates, and increases the circulation of air of electric circular saw inside, is motor and inner member cooling.
Preferably, described circuit controller is arranged on the casing between ventilating opening and the fan blade; The air that produces when fan blade is rotated flows and is the circuit controller cooling.
Preferably, the stator of described brushless electric machine is an annular, evenly is provided with some coil teeth on the inwall of described annular stator; On described each coil tooth around coil and the coil on the adjacent windings tooth between leave interior ventilating duct; Leave ventilating duct in stator interior, the cooling stator coil.
Preferably, also comprise power pack and charging battery cartridge, described handle, at its lower end is provided with lead, and described lead one end is provided with plug, and described power pack and charging battery cartridge are provided with the socket suitable with line trap; Can power with power pack when civil power is arranged, can not power with charging battery cartridge when having civil power, charging battery cartridge can be connected charging with lead with power pack.
Preferably, the outside of described stator is provided with at least one positioning boss or at least one detent; Make things convenient for the stator of brushless electric machine fixing on casing, prevent the stator rotation.
Preferably, the casing of described saw blade periphery is provided with guard shield; The dust that taken up by saw blade during work influences, if the protection operator preserves from when fracture takes place when saw blade rotates.
Compared with prior art, the utility model has the advantages that: adopt brushless electric machine, noise is little, there are not the yet non-carbonate wearing and tearing of carbon brush dust, efficient improves 30%, service life of a machine is than the high several times of series excited machine, circuit controller can be realized rotation-clogging protection, overcurrent protection, overvoltage protection, utilize the casing of electric circular saw to save cost as the shell of brushless electric machine, circuit controller embeds casing inside Anywhere, reduce external control line raising reliability and make more convenient operation, realized real electromechanical integration; Can under the environment of no civil power, rely on battery-powered operation, realize the wide voltage of a machine dual-purpose civil power.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is the agent structure schematic diagram of a kind of electric circular saw of the utility model;
Fig. 2 is the brushless motor stator structural representation of a kind of electric circular saw of the utility model;
Fig. 3 is the brushless motor stator and the positioning boss section structure schematic diagram of a kind of electric circular saw of the utility model;
Fig. 4 is the brushless motor stator and the detent section structure schematic diagram of a kind of electric circular saw of the utility model;
Fig. 5 is a kind of electric circular saw overall structure of the utility model stereogram.
The specific embodiment
Consult the embodiment of Fig. 1 to Fig. 5 for a kind of electric circular saw of the utility model, a kind of electric circular saw, comprise casing 1, transmission device 5, output shaft 3, saw blade 4, handle 6, brushless electric machine and circuit controller 8, one end of described transmission device 5 links to each other with an end of output shaft 3, the other end of described output shaft 3 is provided with saw blade 4, the stator 71 of described brushless electric machine is fixed on the casing 1, the armature spindle 72 of described brushless electric machine is arranged on the casing 1 by tourelle, described armature spindle 72 links to each other with the other end of transmission device 5, described circuit controller 8 is arranged on the casing 1, and the armature spindle 72 of described brushless electric machine is arranged on the casing 1 by rolling bearing 11; Described casing 1 is provided with ventilating opening 12, and an end of described armature spindle 72 is provided with fan blade 73 or armature spindle 72 two ends all are provided with fan blade 73; Described circuit controller 8 is arranged on the casing 1 between ventilating opening 12 and the fan blade 73, and circuit controller 8 just is in the other separate ventilation road 2 of stator 71 like this; The stator 71 of described brushless electric machine is an annular, evenly is provided with some coil teeth 711 on the inwall of described annular stator 71; On described each coil tooth 711 around coil 712 and the coil 712 on the adjacent windings tooth 711 between leave in ventilating duct 713; The outside of described stator 71 is provided with at least one and cooperates positioning boss 714 or the detent 715 that prevents stator 71 rotations with casing 1; Electric circular saw also comprises power pack 91 and charging battery cartridge 95, and described handle 6 lower ends are provided with lead 92, and described lead 92 1 ends are provided with plug 93, and described power pack 91 and charging battery cartridge 95 are provided with and the suitable socket 94 of lead 92 plugs 93; The casing 1 of described saw blade 4 peripheries is provided with guard shield 13.
During work, power pack 91 is inserted civil power, the plug 93 of lead 92 inserts in the socket 94 of power pack 91, rotate by switching device 61 control brushless electric machines, the armature spindle 72 of brushless electric machine drives by transmission device 5 and drives output shaft 3 rotations, described output shaft 3 drives saw blade 4 rotations of an end, makes saw blade 4 cutting objects; In the place that does not have civil power, can be connected power supply by the socket 94 of charging battery cartridge 95 with the plug 93 of lead 92 and make electric circular saw work.Control circuit in this power pack 91 can be suitable for 90-260V voltage, can use in most of area in the whole world, when not using electric circular saw, charging battery cartridge 95 can be connected with power pack 91 simultaneously, gives charging battery cartridge 95 chargings by power pack 91.
The above only is the specific embodiment of the utility model the best, but architectural feature of the present utility model is not limited thereto, any those skilled in the art is in field of the present utility model, and variation of being done or modification all are encompassed among the claim of the present utility model.
Claims (10)
1. electric circular saw, comprise casing (1), transmission device (5), output shaft (3), saw blade (4) and handle (6), one end of described transmission device (5) links to each other with an end of output shaft (3), the other end of described output shaft (3) is provided with saw blade (4), it is characterized in that: also comprise brushless electric machine and circuit controller (8), the stator of described brushless electric machine (71) is fixed on the casing (1), the armature spindle of described brushless electric machine (72) is arranged on the casing (1) by tourelle, described armature spindle (72) links to each other with the other end of transmission device (5), and described circuit controller (8) is arranged on the casing (1).
2. a kind of electric circular saw as claimed in claim 1 is characterized in that: described casing (1) is provided with ventilating opening (12), and an end of described armature spindle (72) is provided with fan blade (73).
3. a kind of electric circular saw as claimed in claim 1 is characterized in that: described casing (1) is provided with ventilating opening (12), and the two ends of described armature spindle (72) are provided with fan blade (73).
4. as claim 2 or 3 described a kind of electric circular saws, it is characterized in that: described circuit controller (8) is arranged on the casing (1) between ventilating opening (12) and the fan blade (73).
5. a kind of electric circular saw as claimed in claim 1 is characterized in that: the stator of described brushless electric machine (71) is an annular, evenly is provided with some coil teeth (711) on the inwall of described annular stator (71).
6. a kind of electric circular saw as claimed in claim 5 is characterized in that: described each coil tooth (711) go up around coil (712) and the coil (712) on the adjacent windings tooth (711) between leave interior ventilating duct (713).
7. a kind of electric circular saw as claimed in claim 1, it is characterized in that: also comprise power pack (91) and charging battery cartridge (95), described handle (6) lower end is provided with lead (92), described lead (92) one ends are provided with plug (93), and described power pack (91) and charging battery cartridge (95) are provided with and the suitable socket (94) of lead (92) plug (93).
8. a kind of electric circular saw as claimed in claim 5 is characterized in that: the outside of described stator (71) is provided with at least one and cooperates the positioning boss (714) that prevents stator (71) rotation with casing (1).
9. a kind of electric circular saw as claimed in claim 5 is characterized in that: the outside of described stator (71) is provided with at least one and cooperates the detent (715) that prevents stator (71) rotation with casing (1).
10. a kind of electric circular saw as claimed in claim 1 is characterized in that: the peripheral casing (1) of described saw blade (4) is provided with guard shield (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920114915U CN201371283Y (en) | 2009-03-06 | 2009-03-06 | Electric circular saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920114915U CN201371283Y (en) | 2009-03-06 | 2009-03-06 | Electric circular saw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201371283Y true CN201371283Y (en) | 2009-12-30 |
Family
ID=41497367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920114915U Expired - Fee Related CN201371283Y (en) | 2009-03-06 | 2009-03-06 | Electric circular saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201371283Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012000735A (en) * | 2010-06-18 | 2012-01-05 | Hitachi Koki Co Ltd | Portable cutter |
| CN102962821A (en) * | 2012-11-07 | 2013-03-13 | 应时立 | Direct-drive electric tool |
| CN105437159A (en) * | 2014-05-30 | 2016-03-30 | 浙江绿动电机科技有限公司 | Angle grinder |
| WO2019033875A1 (en) * | 2017-08-18 | 2019-02-21 | 南京德朔实业有限公司 | Circular saw |
-
2009
- 2009-03-06 CN CN200920114915U patent/CN201371283Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012000735A (en) * | 2010-06-18 | 2012-01-05 | Hitachi Koki Co Ltd | Portable cutter |
| CN102962821A (en) * | 2012-11-07 | 2013-03-13 | 应时立 | Direct-drive electric tool |
| CN105437159A (en) * | 2014-05-30 | 2016-03-30 | 浙江绿动电机科技有限公司 | Angle grinder |
| WO2019033875A1 (en) * | 2017-08-18 | 2019-02-21 | 南京德朔实业有限公司 | Circular saw |
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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 |
Free format text: FORMER OWNER: YING SHILI Owner name: JIAHE TOOLS CO., LTD. Free format text: FORMER OWNER: JIANG WEILIANG Effective date: 20111108 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20111108 Address after: 25 No. 321300 Zhejiang province Yongkang City Hardware Technology Industrial Park, Park Avenue South Patentee after: Jiahe Tools Co., Ltd. Address before: 321300 Zhejiang province Yongkang City Park Economic Development Zone South Road No. 25 Yongkang Jiahe Instrument Company Co-patentee before: Ying Shili Patentee before: Jiang Weiliang |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091230 Termination date: 20160306 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |