CN201371437Y - Electric screwdriver - Google Patents
Electric screwdriver Download PDFInfo
- Publication number
- CN201371437Y CN201371437Y CN200920114918U CN200920114918U CN201371437Y CN 201371437 Y CN201371437 Y CN 201371437Y CN 200920114918 U CN200920114918 U CN 200920114918U CN 200920114918 U CN200920114918 U CN 200920114918U CN 201371437 Y CN201371437 Y CN 201371437Y
- Authority
- CN
- China
- Prior art keywords
- casing
- stator
- criticized
- electric screw
- case
- 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
Links
- 238000007600 charging Methods 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 10
- 238000004804 winding Methods 0.000 claims description 3
- 239000000428 dust Substances 0.000 abstract description 4
- 238000005096 rolling process Methods 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 10
- 229910052799 carbon Inorganic materials 0.000 description 10
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 229910001567 cementite Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model discloses an electric screwdriver, which can effectively solve the problems that the existing electric screwdriver has large noise, and has fast carbon-brush wearing so as to cause the machine to have shorter service life and low whole efficiency. The electric screwdriver comprises a case, a driving mechanism, an output shaft, a limiting device, a screwdriver clamping head, a handle, a brushless motor and a circuit controller, wherein one end of the driving mechanism is arranged on the output shaft which is connected with the screwdriver clamping head; the limiting device is sleeved on the screwdriver clamping head, and the outer end of the limiting device is arranged on the case; 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 other end of the driving mechanism is arranged on the rotor shaft; and the circuit controller is arranged on the case. The electric screwdriver 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, and the cost can be saved by utilizing the case of the electric screwdriver as the case of the brushless motor.
Description
Technical field
The utility model relates to a kind of electric tool, and particularly a kind of electric screw is criticized.
Background technology
Existing electric screw is criticized main use 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 screw do not criticize having and can't work under the situation of civil power, restricted its use.
The utility model content
The purpose of this utility model is to provide a kind of electric screw to criticize, and can effectively solving existing electric screw, to criticize noise big, 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 screw is criticized, comprise casing, transmission mechanism, output shaft, stopping means, the screwdriver chuck, handle, brushless electric machine and circuit controller, one end of described transmission mechanism is arranged on the output shaft, described output shaft is connected with the screwdriver chuck, described stopping means is set on the screwdriver chuck, described stopping means outer end is arranged on the casing, 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, the other end of described transmission mechanism is arranged on the armature spindle, 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 electric screw and criticizes inner circulation of air, 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.
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, the casing that utilizes electric screw to criticize is saved 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:
The structural representation that Fig. 1 criticizes for a kind of electric screw of the utility model;
The brushless motor stator structural representation that Fig. 2 criticizes for a kind of electric screw of the utility model;
Brushless motor stator that Fig. 3 criticizes for a kind of electric screw of the utility model and positioning boss section structure schematic diagram;
Brushless motor stator that Fig. 4 criticizes for a kind of electric screw of the utility model and detent section structure schematic diagram.
The specific embodiment
Consult the embodiment that Fig. 1 to Fig. 4 criticizes for a kind of electric screw of the utility model, a kind of electric screw is criticized, comprise casing 1, transmission mechanism 5, output shaft 3, stopping means 2, screwdriver chuck 4, handle 6, brushless electric machine and circuit controller 8, one end of described transmission mechanism 5 is arranged on the output shaft 3, described output shaft 3 is connected with screwdriver chuck 4, described stopping means 2 is set on the screwdriver chuck 4, described stopping means 2 outer ends are arranged on the casing 1, 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, the other end of described transmission mechanism 5 is arranged on the armature spindle 72, and described circuit controller 8 is arranged on the casing 1; 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 the two ends that an end of described armature spindle 72 is provided with fan blade 73 or armature spindle 72 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 13 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 positioning boss 714 or at least one detent 715; Described electric screw is criticized and is also comprised power pack 91 and charging battery cartridge 95, described handle 6 lower ends are provided with lead 92, 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.
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, armature spindle 72 drives output shaft 3 rotations by transmission mechanism 5, and output shaft 3 drives screwdriver chuck 4 again, make the screwdriver in the screwdriver chuck 4 drive screw precession object, when rotating to certain depth by stopping means 2 chuckings, screwdriver chuck 4 no longer rotates, and trip switch device 61 gets final product; 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 screw criticize 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 screw to criticize, 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 (9)
1. an electric screw is criticized, comprise casing (1), transmission mechanism (5), output shaft (3), stopping means (2), screwdriver chuck (4) and handle (6), one end of described transmission mechanism (5) is arranged on the output shaft (3), described output shaft (3) is connected with screwdriver chuck (4), described stopping means (2) is set on the screwdriver chuck (4), described stopping means (2) outer end is arranged on the casing (1), 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, the other end of described transmission mechanism (5) is arranged on the armature spindle (72), and described circuit controller (8) is arranged on the casing (1).
2. a kind of electric screw as claimed in claim 1 is criticized, and it 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 screw as claimed in claim 1 is criticized, and it 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. criticize as claim 2 or 3 described a kind of electric screws, 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 screw as claimed in claim 1 is criticized, and it 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 screw as claimed in claim 5 is criticized, and it 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 screw as claimed in claim 1 is criticized, 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 screw as claimed in claim 5 is criticized, and it 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 screw as claimed in claim 5 is criticized, and it 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).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920114918U CN201371437Y (en) | 2009-03-06 | 2009-03-06 | Electric screwdriver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920114918U CN201371437Y (en) | 2009-03-06 | 2009-03-06 | Electric screwdriver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201371437Y true CN201371437Y (en) | 2009-12-30 |
Family
ID=41497520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920114918U Expired - Fee Related CN201371437Y (en) | 2009-03-06 | 2009-03-06 | Electric screwdriver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201371437Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102962821A (en) * | 2012-11-07 | 2013-03-13 | 应时立 | Direct-drive electric tool |
| CN103567944A (en) * | 2012-08-03 | 2014-02-12 | 龚海飞 | Improved portable safety electric screw driver |
| CN103567943A (en) * | 2012-08-03 | 2014-02-12 | 龚海飞 | Improved charging electric screw driver |
-
2009
- 2009-03-06 CN CN200920114918U patent/CN201371437Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103567944A (en) * | 2012-08-03 | 2014-02-12 | 龚海飞 | Improved portable safety electric screw driver |
| CN103567943A (en) * | 2012-08-03 | 2014-02-12 | 龚海飞 | Improved charging electric screw driver |
| CN102962821A (en) * | 2012-11-07 | 2013-03-13 | 应时立 | Direct-drive electric tool |
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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: JIAHE TOOLS CO., LTD. Free format text: FORMER OWNER: JIANG WEILIANG Effective date: 20111214 Free format text: FORMER OWNER: YING SHILI Effective date: 20111214 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20111214 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091230 Termination date: 20160306 |