CN101337357B - Electric chain saw - Google Patents
Electric chain saw Download PDFInfo
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- CN101337357B CN101337357B CN200710164509XA CN200710164509A CN101337357B CN 101337357 B CN101337357 B CN 101337357B CN 200710164509X A CN200710164509X A CN 200710164509XA CN 200710164509 A CN200710164509 A CN 200710164509A CN 101337357 B CN101337357 B CN 101337357B
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- chain saw
- electric machine
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- electric chain
- brushless
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention discloses an electric chain saw which takes the advantages of a brushless motor, such as large torque, high power factors, eliminates a retarding mechanism and a directive drive chain of the brushless motor, improves the working process of an electronic brake, and optimizes the performance of a whole machine. The electric chain saw has the advantages of high efficiency, energy conservation, stable mechanical property, low noise, reasonable structure design, simple and compact structure, and smooth braking.
Description
Technical field
The present invention relates to a kind of electric tool, relate in particular to a kind of electric chain saw.
Background technology
Electric chain saw is a traditional electric tool, is usually used in pruning or cutting plants, and it is generally worked by the circulating chain cutter of drive mechanism.Up to the present, never too big innovation and variation of the operation principle of the driving mechanism of electric chain saw and structure.The employed electric chain saw of the manufacturer of present global electric tool industry, the mechanism that substantially all is to use series excited machine to drive, the general gear transmission structure of traditional electrical chain saw as shown in Figure 1.There is following shortcoming in this traditional drive mechanism: series excited machine itself is owing to use commutator and carbon brush, and its power attenuation is very big, and power factor (PF) generally has only 60%, and the service life of commutator and carbon brush is not long; The another one problem of series excited machine is that its reliability is bad, and fault rate is very high.Modal fault is that carbon brush has ground, commutator damage etc.Because the series excited machine limited torque output, and because the motor feels hot amount is big, for satisfying the needs of heat radiation, must make the rotating speed of series excited machine high as much as possible, so that heat radiation produces bigger cooling air.Therefore use the electric chain saw of series excited machine generally to adopt one-level gear drive reducing gear arranged side by side, it is by being fixed on the pinion 17 on the rotor main shaft and being fixed on the gear transmission structure a pair of arranged side by side that the gear wheel 18 on the output shaft is formed.This gear drive can be because vibration produces very big noise at fast state, and violent vibration meeting further aggravates the wearing and tearing of each parts, and then reduces transmission efficiency; Complicated simultaneously structure needs electric chain saw for it provides enough spaces, makes that the electric chain saw volume is bigger, and as hand-held tool, large volume can have a strong impact on its result of use.The oil pump 10 of automatic chain automatic lubrication mechanism is installed at rotating shaft one end of gear wheel, be connected on the oil pipe at oil pump 10, and the close together of oil pipe and gear drive reducing gear arranged side by side, when oil pipe because outside former thereby be easy to be galled during near the gear that runs up, cause mechanical accident, thereby have higher potential safety hazard.
Electric chain saw is provided with braking mechanism, and what this braking mechanism was commonly used is frame for movement, can force chain to stop operating when emergency immediately.Rotatablely moving of motor passes to gear wheel by pinion, and gear wheel drives output shaft-wheel hub-sprocket wheel and rotates together.When brake trigger when action, steel band is tensioned, and with the wheel hub locking, thereby makes the rotor-gear wheel-output shaft-wheel hub-sprocket wheel stop motion of motor, thereby realizes brake.The shortcoming of this brake modes moment that is to brake is caused very big impact to the rotor-gear wheel-output shaft-wheel hub-frame for movements such as sprocket wheel of motor, reduces its reliability greatly, and shortens its service life.Plant an electric brake structure in the prior art in addition, its principle is to utilize the brake immediate current to produce very big back-emf, to the rotor generation of series excited machine and the magnetic force of its inertia direction of rotation, stops the inertia of rotor to rotate, thereby realizes braking.The shortcoming of this brake modes be the to brake big electric current of moment is bigger to the commutator and the carbon brush infringement of series excited machine, adopts the electric brake mode, and can obviously shorten the service life of series excited machine.No matter it adopts electronics or mechanical brake, and motor or frame for movement are all had bigger infringement, has shortened electric chain saw service life.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of electric chain saw, and is energy-efficient, stable mechanical performance, and noise is low, and is simple and compact for structure, reasonable in design, and braking procedure is smooth and easy and little to other component affects.
For addressing the above problem, the present invention adopts following technical scheme: this electric chain saw comprises the startup trigger, the brake trigger, main switch, microswitch, power input, chain, sprocket wheel, power set and chain automatic lubrication mechanism, described startup trigger and main switch interlock, described brake trigger and microswitch interlock, described chain automatic lubrication mechanism comprises oil pump, described electric chain saw also comprises electronic controller, described power set comprise brushless electric machine, described electronic controller is connected with brushless electric machine, described main switch all is connected with electronic controller with microswitch, described electronic controller is connected with power input, and described brushless electric machine output shaft one end is directly by sprocket wheel and chain interlock.
As of the present invention a kind of preferred, described brushless electric machine is a dc brushless motor, and described power input is connected with dismountable dc power supply.Direct current supply has the stable characteristics of voltage, can make the output characteristics of dc brushless motor more stable.Use the probability of direct current generation electric shock accidents little simultaneously, therefore can provide the necessary security guarantee for the workman.
Further a kind of preferred as the present invention, described power input is connected with dismountable portable battery bag.Store enough electric weight and just can carry out cutting operation out of doors in the portable battery bag, its portability, superior dynamic characteristics more can allow electric chain saw adapt to complex operating environment.
Further another kind of preferred as the present invention, described power input is connected with detachable or fixed alternating current-direct current transformer.When being applied to factory, decoration, city and operating mode such as building in the open, just can utilize the alternating current-direct current transformer-supplied, this had both alleviated workman's load, was able to continuously more again with powered battery to obtain power supply engineering can continuously be carried out.
Preferred as another kind of the present invention, described brushless electric machine is an AC brushless electric machine, and described power input directly inserts civil power.The torque of AC brushless electric machine is better than dc brushless motor, and starting characteristic is good, and torque is big, is not prone to the jammed phenomenon of chain, can be used to cut the comparatively hard object of quality.
As a kind of improvement of the present invention, the other end of described brushless electric machine output shaft is connected with oil pump.The chain automatic lubrication mechanism separated with chain, sprocket wheel help to eliminate safe hidden trouble.
Further a kind of preferred as the present invention, described portable battery bag comprises the soft power line of connection, the braces of rechargeable battery pack and adjustable in length, the soft power line of described connection two ends are provided with the waterproof guide pin bushing, one end of the soft power line of described connection is movably connected in power input, the other end of the soft power line of described connection is movably connected on the rechargeable battery pack, and described braces is installed on the rechargeable battery pack.Be subjected to the restriction of outdoor environment, the portable battery bag does not influence the requirement of electric chain saw work, certain waterproof ability in the time of must satisfying portability, power supply, therefore adopt above-mentioned technology.
The present invention adopts technique scheme, has reached the purpose that adopts brushless electric machine directly to drive the chain of electric chain saw, omits the gear drive reducing gear, noise is reduced greatly, and improved transmission efficiency; Utilize brushless electric machine moment big, the characteristics that power factor (PF) is high make electric chain saw have energy-efficient advantage; Compare with series excited machine, brushless electric machine does not have mechanical commutator and carbon brush, so mechanical performance gets a promotion, and has prolonged maintenance period, has reduced use cost; Adopt the electronic brake system,electronic antiskid system that cooperates with brushless electric machine, the skidding process is smooth and easy, does not have the intense impact of mechanical structure, and big electric current is not to the infringement of commutator and carbon brush when having the braking of conditional electronic braking mechanism yet; Omitted reducing gear, adopted new electronic brake system,electronic antiskid system to make the electric chain saw volume small and exquisite, compact conformation is easy to carry; Chain automatic lubrication mechanism Position Design is reasonable, has eliminated the potential safety hazard that original structure exists.
Figure of description
Below in conjunction with the drawings and specific embodiments the present invention is further specified.
Fig. 1 is the general gear transmission structure of traditional electrical chain saw;
Fig. 2 is the assembly drawing of a kind of electric chain saw of the present invention;
Fig. 3 is the power set of a kind of electric chain saw of the present invention and the structural representation after the chain assembling;
Fig. 4 is the upward view of Fig. 3;
Fig. 5 is the power set of a kind of electric chain saw of the present invention and the structural representation after the assembling of chain automatic lubrication mechanism;
Fig. 6 is the schematic diagram that a kind of electric chain saw of the present invention and portable battery inclusion are closed.
The specific embodiment
As shown in Figure 2, the casing inside of electric chain saw is provided with main switch 1, microswitch 2, electronic controller 3, brushless electric machine 4, chain automatic lubrication mechanism, on casing, be provided with startup trigger 5, brake trigger 6, power input, be provided with chain 7, sprocket wheel 8 in the casing outside.The power set of only forming electric chain saw by brushless electric machine 4.The rotating shaft two ends of brushless electric machine 4 all are used as clutch end; Shown in Fig. 3,4, directly drive the chains 7 that are arranged on the carrier bar 9 by sprocket wheel 8 at an end of brushless electric machine 4; Shown in Fig. 3,5, be provided with the blade of heat transmission at the other end of brushless electric machine 4, oil pump 10 interlocks of rotating shaft and chain automatic lubrication mechanism.The chain automatic lubrication mechanism comprises oil can 11, oil pipe 12 and oil pump 10, and brushless electric machine 4 drives oil pump 10 rotation backs and pumps from oil can 11 by the oil pipe 12 that is provided with at one end, exports by oil pipe 12 from the other end of oil pump 10 again.
Start trigger 5 and main switch 1 interlock, brake trigger 6 and microswitch 2 interlocks.Therefore, main switch 1 and microswitch 2 can be realized switch motion according to the motion that starts trigger 5 and brake trigger 6 respectively.The switch of the participation work the when switch when main switch 1 is startup, microswitch 2 are brake.Main switch 1 all is connected with electronic controller 3 with microswitch 2, and brushless electric machine 4, power input also all are connected with electronic controller 3.All switch motions are used for operating brushless electric machine 4 work after all analyzing by electronic controller 3.When main switch 1 discharged, main switch 1 opened circuit; Perhaps when 6 actions of brake trigger, microswitch 2 opens circuit; This can make electronic controller 3 produce reverse potential, to the magnetic force of brushless electric machine 4 rotors generation with its inertia direction of rotation, stops the inertia of rotor to rotate, thereby realize that electric chain saw braked in 0.15 second.Said process is exactly an electric chain saw skidding process, because do not have traditional commutator and carbon brush, so big electric current can not influence brushless electric machine 4 work.
Brushless electric machine 4 can be dc brushless motor, also can be AC brushless electric machine.Can dispose motor type according to different needs.When being dc brushless motor, its power input can connect portable battery bag or alternating current-direct current transformer, and the dc power supply of other type; When being AC brushless electric machine, power input can directly insert civil power and obtain power supply.As shown in Figure 6, be subjected to the restriction of outdoor environment, the portable battery bag does not influence the requirement of electric chain saw work, certain waterproof ability in the time of must satisfying portability, power supply, therefore the portable battery bag has comprised that two ends are provided with the soft power line 14 of connection of waterproof guide pin bushing 13, rechargeable battery pack 16 and be installed on the rechargeable battery pack 16 and the braces 15 of adjustable in length.An end plug type that connects soft power line 14 is connected power input, and the other end plug type that connects soft power line 14 is connected on the rechargeable battery pack 16, and rechargeable battery pack 16 inserts power supply by port separately when charging like this.
The present invention compares existing electric chain saw and compares, and maximum characteristics are to have utilized the brushless electric machine torque big, and the advantage that power factor (PF) is high has been omitted reducing gear, and the direct chain drive-belt of brushless electric machine has improved the course of work of electric brake, optimizes overall performance. Make that the present invention has that energy-efficient, stable mechanical performance, noise are low, reasonable in design, simple and compact for structure, brake smoothly advantage.
Claims (7)
1. electric chain saw, comprise and start trigger (5), brake trigger (6), main switch (1), microswitch (2), power input, chain (7), sprocket wheel (8), power set and chain automatic lubrication mechanism, described startup trigger (5) and main switch (1) interlock, described brake trigger (6) and microswitch (2) interlock, described chain automatic lubrication mechanism comprises oil pump (10), it is characterized in that: described electric chain saw also comprises electronic controller (3), described power set comprise brushless electric machine (4), described electronic controller (3) is connected with brushless electric machine (4), described main switch (1) all is connected with electronic controller (3) with microswitch (2), described electronic controller (3) is connected with power input, and described brushless electric machine (4) output shaft one end is directly by sprocket wheel (8) and chain (7) interlock.
2. according to the described electric chain saw of claim 1, it is characterized in that: described brushless electric machine (4) is a dc brushless motor, and described power input is connected with dismountable dc power supply.
3. according to the described electric chain saw of claim 2, it is characterized in that: described power input is connected with dismountable portable battery bag.
4. according to the described electric chain saw of claim 2, it is characterized in that: described power input is connected with detachable or fixed alternating current-direct current transformer.
5. according to the described electric chain saw of claim 1, it is characterized in that: described brushless electric machine (4) is an AC brushless electric machine, and described power input directly inserts civil power.
6. according to claim 2 or 5 described electric chain saws, it is characterized in that: the other end of described brushless electric machine (4) output shaft is connected with oil pump (10).
7. according to the described electric chain saw of claim 3, it is characterized in that: described portable battery bag comprises connection soft power line (14), the braces (15) of rechargeable battery pack (16) and adjustable in length, the soft power line of described connection (14) two ends are provided with waterproof guide pin bushing (13), one end of the soft power line of described connection (14) is movably connected in power input, the other end of the soft power line of described connection (14) is movably connected on the rechargeable battery pack (16), and described braces (15) is installed on the rechargeable battery pack (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710164509XA CN101337357B (en) | 2007-11-27 | 2007-11-27 | Electric chain saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710164509XA CN101337357B (en) | 2007-11-27 | 2007-11-27 | Electric chain saw |
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| Publication Number | Publication Date |
|---|---|
| CN101337357A CN101337357A (en) | 2009-01-07 |
| CN101337357B true CN101337357B (en) | 2010-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200710164509XA Active CN101337357B (en) | 2007-11-27 | 2007-11-27 | Electric chain saw |
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| CN (1) | CN101337357B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102741024B (en) * | 2010-02-11 | 2016-01-20 | 胡斯华纳有限公司 | There is the battery-driven electric tool of brushless electric machine |
| CN102166765B (en) * | 2011-01-29 | 2013-06-12 | 浙江亚特电器有限公司 | Oil pump for chain saw |
| CN102416504A (en) * | 2011-10-14 | 2012-04-18 | 浙江亚特电器有限公司 | Chain saw driven by storage battery |
| CN102717406A (en) * | 2012-06-17 | 2012-10-10 | 无锡市优耐特石化装备有限公司 | Sealing structure of head of electric wood saw |
| CN102972216A (en) * | 2012-12-03 | 2013-03-20 | 常州格力博有限公司 | Brushless chain saw |
| CN103331486B (en) * | 2013-05-28 | 2015-12-09 | 浙江亚特电器有限公司 | A kind of Multifunctional electric chain saw |
| CN104604548B (en) * | 2013-11-05 | 2018-06-19 | 南京德朔实业有限公司 | Electric gardening tool |
| CN104570917B (en) * | 2014-08-04 | 2017-04-12 | 江苏苏美达五金工具有限公司 | Control system and control method for electric cutting tool |
| JP6302376B2 (en) * | 2014-08-12 | 2018-03-28 | 株式会社マキタ | Oil pump |
| CN104960038A (en) * | 2015-07-13 | 2015-10-07 | 溯洄（上海）设计咨询有限公司 | Electric chain saw |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1636661A (en) * | 2002-11-19 | 2005-07-13 | 创科实业有限公司 | Battery operated chain saw |
| CN201179671Y (en) * | 2007-11-27 | 2009-01-14 | 浙江亚特电器有限公司 | Electric chain saw |
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2007
- 2007-11-27 CN CN200710164509XA patent/CN101337357B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1636661A (en) * | 2002-11-19 | 2005-07-13 | 创科实业有限公司 | Battery operated chain saw |
| CN201179671Y (en) * | 2007-11-27 | 2009-01-14 | 浙江亚特电器有限公司 | Electric chain saw |
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| Publication number | Publication date |
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| CN101337357A (en) | 2009-01-07 |
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| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG GUYATT ELECTRICAL CO., LTD. Free format text: FORMER OWNER: CHEN YONG Effective date: 20090424 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20090424 Address after: Jiaxing City, Zhejiang Province, Nanhu District on the north side of Zhejiang Yulu Shi Yu Xin Zhen Yate Electric Appliance Co. Ltd postal encoding: 314100 Applicant after: Zhejiang YAT Electrical Appliance Co., Ltd. Address before: Shanghai City, Minhang District Qibao town nine Village No. 7 Shen Chang Bang post encoding: 201101 Applicant before: Chen Yong |
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| C14 | Grant of patent or utility model | ||
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Address after: No. 150 Wenlong Road, Yuxin Town, Nanhu District, Jiaxing City, Zhejiang Province Patentee after: Zhejiang Yate Electric Appliance Co.,Ltd. Address before: Jiaxing City, Zhejiang province 314100 Nanhu District on the north side of Zhejiang Yulu Shi Yu Xin Zhen Yate Electrical Appliance Co. Ltd. Patentee before: ZHEJIANG YAT ELECTRICAL APPLIANCE Co.,Ltd. |