CN201371512Y - Electric drill - Google Patents
Electric drill Download PDFInfo
- Publication number
- CN201371512Y CN201371512Y CN200920114923U CN200920114923U CN201371512Y CN 201371512 Y CN201371512 Y CN 201371512Y CN 200920114923 U CN200920114923 U CN 200920114923U CN 200920114923 U CN200920114923 U CN 200920114923U CN 201371512 Y CN201371512 Y CN 201371512Y
- Authority
- CN
- China
- Prior art keywords
- electric drill
- casing
- stator
- transmission mechanism
- 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
Images
Abstract
The utility model discloses an electric drill which can effectively solve the problems of the prior electric drill such as high noise, generated carbon brush dust, short service life caused by quick carbon brush abrasion and low overall efficiency. The electric drill comprises a case, an output shaft, an output clamping head, a transmission mechanism, a handle, a brushless motor and a circuit controller. The transmission mechanism is arranged at one end of the output shaft; the output clamping head is arranged at the other end of the output shaft; the stator of the brushless motor is fixed on the case; the rotor shaft of the brushless motor is arranged on the case through a rolling device; the tail end of the rotor shaft is connected with the transmission mechanism; and the circuit controller is arranged on the case. The electric drill has the advantages of adopting the brushless motor, ensuring low noise, and generating no carbon brush dust and carbon brush abrasion, improving the efficiency by 30 percent, ensuring the service life of the machine to be longer than that of a series machine by a plurality of times, causing the circuit controller to achieve rotation blocking protection, overcurrent protection and overvoltage protection, and saving the cost by utilizing the case of the electric drill 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 drill.
Background technology
Electric drill is based on rotary cutting, is used for the electric tool of holing on the materials such as brick and lightweight wall.
Existing electric drill 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 drill 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 drill, and it is big effectively to solve existing electric drill 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 drill, comprise casing, output shaft, output clip, transmission mechanism, handle, brushless electric machine and circuit controller, one end of described output shaft is provided with transmission mechanism, the other end of described output shaft is provided with output clip, 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 end links to each other with transmission mechanism, 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 drill 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.
Compared with prior art, the utility model has the advantages that: adopt brushless electric machine, noise is little, does not have the also non-carbonate wearing and tearing of carbon brush dust, and 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, utilizes the casing of electric drill to save cost as the shell of brushless electric machine, and 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 structural representation of a kind of electric drill of the utility model;
Fig. 2 is the brushless motor stator structural representation of a kind of electric drill of the utility model;
Fig. 3 is the brushless motor stator and the positioning boss section structure schematic diagram of a kind of electric drill of the utility model;
Fig. 4 is the brushless motor stator and the detent section structure schematic diagram of a kind of electric drill of the utility model.
The specific embodiment
Consult the embodiment of Fig. 1 to Fig. 4 for a kind of electric drill of the utility model, a kind of electric drill, comprise casing 1, output shaft 3, output clip 4, transmission mechanism 5, handle 6, brushless electric machine and circuit controller 8, one end of described output shaft 3 is provided with transmission mechanism 5, the other end of described output shaft 3 is provided with output clip 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 ends link to each other with transmission mechanism 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 drill 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.
During work, power pack 91 is inserted civil power, the plug 93 of lead 92 inserts in the socket 94 of power pack 91, rotates by switching device 61 control brushless electric machines, and armature spindle 7272 drives output shaft 33 by transmission mechanism 55, the drill bit rotation that output clip 44 is clamped; 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 drill 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 drill, 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. electric drill, comprise casing (1), output shaft (3), output clip (4), transmission mechanism (5) and handle (6), one end of described output shaft (3) is provided with transmission mechanism (5), the other end of described output shaft (3) is provided with output clip (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) is terminal to link to each other with transmission mechanism (5), and described circuit controller (8) is arranged on the casing (1).
2. a kind of electric drill 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 drill 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 drills, 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 drill 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 drill 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 drill 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 drill 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 drill 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).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920114923U CN201371512Y (en) | 2009-03-06 | 2009-03-06 | Electric drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920114923U CN201371512Y (en) | 2009-03-06 | 2009-03-06 | Electric drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201371512Y true CN201371512Y (en) | 2009-12-30 |
Family
ID=41497595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920114923U Expired - Fee Related CN201371512Y (en) | 2009-03-06 | 2009-03-06 | Electric drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201371512Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105437159A (en) * | 2014-05-30 | 2016-03-30 | 浙江绿动电机科技有限公司 | Angle grinder |
-
2009
- 2009-03-06 CN CN200920114923U patent/CN201371512Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105437159A (en) * | 2014-05-30 | 2016-03-30 | 浙江绿动电机科技有限公司 | Angle grinder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201371407Y (en) | Flat sander | |
| US7323797B2 (en) | Power tool | |
| CN201371259Y (en) | Electric hammer | |
| CN201371408Y (en) | Angle grinder | |
| CN201371283Y (en) | Electric circular saw | |
| CN201371437Y (en) | Electric screwdriver | |
| CN102710067B (en) | Series-excited motor | |
| JP4781653B2 (en) | Electric tool | |
| CN201371260Y (en) | Impact electric drill | |
| CN201579454U (en) | Rechargeable electric drill free of carbon brush | |
| CN201371512Y (en) | Electric drill | |
| CN102962821B (en) | Direct-drive electric tool | |
| CN201371484Y (en) | Electric router | |
| CN201371481Y (en) | Electric planer | |
| CN202586654U (en) | Series motor | |
| CN201371285Y (en) | Electric reciprocating saw | |
| CN201371284Y (en) | Electric curve saw | |
| JP2009012153A (en) | Driver drill | |
| CN201371517Y (en) | Marble machine | |
| CN202985527U (en) | Direct-drive electric tool | |
| CN206908494U (en) | A kind of noise reduction brush motor that is easily installed of perfect heat-dissipating | |
| CN201869032U (en) | Carbon powder dust-discharge cleaning and cooling device for collector ring of wind driven generator | |
| CN214590924U (en) | Direct current has brush traction motor | |
| CN206982386U (en) | A kind of angle grinder with anti-vibration functions | |
| CN106059169A (en) | Novel dust collector motor structure |
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 |