CN202998897U - Brushless chain saw - Google Patents
Brushless chain saw Download PDFInfo
- Publication number
- CN202998897U CN202998897U CN 201220652230 CN201220652230U CN202998897U CN 202998897 U CN202998897 U CN 202998897U CN 201220652230 CN201220652230 CN 201220652230 CN 201220652230 U CN201220652230 U CN 201220652230U CN 202998897 U CN202998897 U CN 202998897U
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- brushless
- chain saw
- electric machine
- electronic commutator
- power supply
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Abstract
The utility model discloses a brushless chain saw, which comprises a shell, a brushless motor, a transmission case device, a power supply, an electronic converter, a brake guard plate, a link plate and a chain, wherein the brushless motor, the transmission case device and the electronic converter are arranged inside the shell; the brushless motor is connected with the electronic converter; the power output end of the brushless motor is connected with the transmission case device; the electronic converter is used for detecting a position signal of the brushless motor and controlling the brushless motor to drive the chain and the link plate to rotate; and the electronic converter is used for receiving a brake signal of the brake guard plate and transmitting the brake signal to the brushless motor; and the brushless motor is used for driving the chain to brake according to the brake signal. Through the way, rapid stopping of the motor is realized by using the brushless chain saw and the energy consumption way of a coil of the motor; and through the utilization of the advantages of high efficiency and long service life of the brushless motor, a speed reducing device is arranged for increasing output torque, so that the brushless chain saw is small in size, low in cost, large in torque and small in braking current, and the overall performance is optimized.
Description
Technical field
The utility model relates to a kind of brushless chain saw, particularly relates to a kind of brushless chain saw for garden instrument or electric tool.
Background technology
Chain saw is a kind of traditional electric cutting tool, is usually used in building or cutting plants, and it generally carries out cutting work by the motor-driven chain.
At present, on market, major part is the tool-class product that brush motor drives, and its shortcoming is that the carbon brush life-span is limited, efficient is low (generally only having 50% left and right), and also because of the factor of load state, its life-span is roughly 30 ~ 200Hr.
Even if some product motors have adopted the mode of replaceable carbon brush to extend its life-span, still limited because of the life-span of commutator, so changing a carbon brush substantially, the life-span limit of motor also just died.
Also the tools production of some manufacturer production utilizes brushless electric machine directly to drive, although solved the life problems that has brush to connect chain saw, but because the moment of torsion of driven tool work is often larger, and utilize motor direct-drive just motor size need to be done to get the very large high pulling torque that could obtain, the problem of bringing like this is that cost is high, Heavy Weight, the shortcomings such as the reaction gesture is large of braking.
Traditional mechanical braking device complex structure, the time has been grown later on easily wear out failure, and braking effect easily reduces, and the follow-up maintenance cost is high.
The utility model content
The technical problem that the utility model mainly solves is to provide a kind of brushless chain saw, utilize the energy consumption mode of the coil of motor own to realize that motor stops fast, utilize the advantage that brushless electric machine efficient is high, the life-span is long, mix deceleration device and increase output torque, volume is little, cost is low, moment of torsion is large, the brake electric current is little, has optimized overall performance.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of brushless chain saw is provided, comprise housing, brushless electric machine, gearbox device, power supply, electronic commutator, brake backplate, carrier bar and chain, described brushless electric machine, gearbox device and electronic commutator are arranged on enclosure interior, described brushless electric machine is connected with electronic commutator, and the clutch end of brushless electric machine is connected with gearbox device.
In preferred embodiment of the utility model, described gearbox device comprises gear box, output shaft assembly, gear box cover and sprocket wheel, described Gearbox is fixedly connected with the clutch end of brushless electric machine, described output shaft assembly is fixedly installed in hole in Gearbox, described gear box cover is arranged on Gearbox, the output of described brushless electric machine is connected with the output shaft assembly by gear, and described output shaft assembly drive sprocket and then drive chain rotate.
In preferred embodiment of the utility model, described tooth-formation of gear is involute shape or circular arc.
In preferred embodiment of the utility model, described gearbox device is single-stage speed changing structure, multi-stage speed-changing structure or infinitely variable speed structure.
In preferred embodiment of the utility model, described gear comprises driving wheel and driven pulley, during less than the size of driven pulley, realizes deceleration when the size of driving wheel; During greater than the size of driven pulley, realize accelerating function when the size of driving wheel.
In preferred embodiment of the utility model, described enclosure interior also is provided with oil pump and oil can, and described oil pump one end is connected with gearbox device, and the other end is connected with oil can.
In preferred embodiment of the utility model, be connected with alarm display apparatus on described housing, described alarm display apparatus is connected with brushless electric machine, gearbox device and electronic commutator.
In preferred embodiment of the utility model, be connected with switch trigger, main switch, the first microswitch, the second microswitch, brake backplate and light switch on described housing, described switch trigger and main switch interlock arrange, described the first microswitch, the second microswitch arrange with the interlock of brake backplate, and described main switch, the first microswitch, the second microswitch and light switch all are connected with electronic commutator.
In preferred embodiment of the utility model, described electronic commutator also connects the input of power supply, and the power transmission mode of described electronic commutator is direct current input or alternating current input.
In preferred embodiment of the utility model, described power supply is dc source, and the input of described power supply is connected with dismountable dc power supply, dismountable portable battery bag or alternating current-direct current transformer; Described power supply is AC power, and the input of described power supply directly connects civil power.
In preferred embodiment of the utility model, also be provided with complete machine air inlet and air outlet on described housing, described enclosure interior is provided with deep bead, the heat radiation plane of described electronic commutator is arranged on the rear of complete machine air inlet or the place ahead of air outlet, is used for making the air-flow of the brushless electric machine running wind path that produces to pass the electronic commutator cooling fins and wears away heat.
The beneficial effects of the utility model are: brushless chain saw of the present utility model can utilize the energy consumption mode of the coil of motor own to realize that motor stops fast, cost and complete machine weight obviously reduce, can utilize the advantage that brushless electric machine efficient is high, the life-span is long, mix deceleration device and increase output torque, volume is little, cost is low, moment of torsion is large, the brake electric current is little, has optimized overall performance.
Description of drawings
Fig. 1 is the explosive view of the brushless chain saw of the utility model embodiment;
Fig. 2 is the structural representation of brushless electric machine and gearbox device in the brushless chain saw of the utility model;
Fig. 3 is the front view of the brushless chain saw of the utility model;
Fig. 4 is the control principle drawing of the brushless chain saw control procedure of the utility model;
Fig. 5 is the front view of the brushless chain saw heat dissipation wind channel of the utility model;
Fig. 6 is the vertical view of the brushless chain saw heat dissipation wind channel of the utility model;
in accompanying drawing, the mark of each parts is as follows: 1, the first microswitch, 2, electronic commutator, 3, the brake backplate, 4, housing, 5, gearbox device, 6, chain, 7, the side cover tension assembly, 8, power supply, 9, the switch trigger, 10, main switch, 11, oil can, 12, brushless electric machine, 14, oil pump, 15, Gearbox, 16, the output shaft assembly, 17, gear box cover, 18, sprocket wheel, 19, alarm display apparatus, 20, the second microswitch, 21, light switch, 22, the complete machine air inlet, 23, air outlet, 24, deep bead, 25, driving wheel, 26, driven pulley, 27, carrier bar.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, thereby so that advantage of the present utility model and feature can be easier to be it will be appreciated by those skilled in the art that, protection domain of the present utility model is made more explicit defining.
See also Fig. 1 to Fig. 6, the utility model embodiment comprises:
A kind of brushless chain saw, comprise housing 4, brushless electric machine 12, gearbox device 5, electronic commutator 2, chain 6 and carrier bar 27, described brushless electric machine 12, gearbox device 5 and electronic commutator 2 are arranged on housing 25 inside, described brushless electric machine 12 is connected with electronic commutator 2, and the clutch end of brushless electric machine 12 is connected with gearbox device.
In the utility model, described gearbox device 5 comprises brushless electric machine 12, Gearbox 15, output shaft assembly 16, gear box cover 17 and sprocket wheel 18.
Described Gearbox 15 is fixedly connected with the clutch end of brushless electric machine 12, described output shaft assembly 16 is fixedly installed in hole in Gearbox 15, described gear box cover 17 is arranged on Gearbox 15, the output of described brushless electric machine 12 is connected with output shaft assembly 16 by gear, and described output shaft assembly 16 arranges by sprocket wheel 18 and chain 6 interlocks.
Wherein, the form of gear tooth of gearbox device 5 can be involute shape or circular arc.Described involute profile can be specifically straight-tooth, helical teeth or umbrella tooth.Gearbox device 5 can be single-stage speed changing structure, multi-stage speed-changing structure or infinitely variable speed structure, and its size according to output torque is configured.When the size of driving wheel 25 is less than the size of driven pulley 26, can realize deceleration; Otherwise, if the size of driving wheel 25 is larger than the size of driven pulley 26, realize accelerating function.
Be connected with alarm display apparatus 19 on described housing 4, described alarm display apparatus 19 is connected with electronic commutator with brushless electric machine 12, gearbox device 5 and is connected.
Particularly, alarm display apparatus 19 can only have Presentation Function or warning function also can not only show but also report to the police, and the function of feedback can be the duty of whole brushless chain saw each several part, can be also the remaining time that brushless chain saw can carry out work.
Also be connected with switch trigger 9, main switch 10, the first microswitch 1, the second microswitch 20, brake backplate 3 and light switch 21 on described housing 4.
Described switch trigger 9 arranges with main switch 10 interlocks, and described the first microswitch 1, the second microswitch 20 arrange with 3 interlocks of brake backplate, and namely the first microswitch 1 and the second microswitch 20 drive break-make by brake backplate 3.
Described main switch 10, the first microswitch 1, the second microswitch 20 are connected with light switch and all are connected with electronic commutator 2.
Also be connected with side cover tension assembly 7 on housing 4, it is fixed chain 6 in elasticity suitable position, and described chain 6 drives by brushless electric machine acceleration and deceleration device 4 and carries out cutting work.
Described housing 4 inside are provided with power supply 8, and described power supply 8 is connected with electronic commutator 2, and described power supply 8 is dc source or AC power, can be according to different needs configuration power supply types.
When power supply 8 is dc source, the input of described power supply 8 is connected with dismountable dc power supply, dismountable portable battery bag or alternating current-direct current transformer; When power supply 8 is AC power, the input in described electric 8 sources directly connects civil power.
Described housing 4 inside also are provided with oil pump 14 and oil can 11, and described oil pump 14 1 ends are connected with gearbox device 5, and the other end is connected with oil can 11.
In the utility model, the power transmission mode of described electronic commutator 2 is for being direct current input or alternating current input.
In order to reduce the axial length of brushless electric machine 12, utilize better the inner space of chain saw housing 4, heat radiation plane with described electronic commutator 2 in the utility model is arranged on the rear of complete machine air inlet or the place ahead of air outlet, is used for making the air-flow of the brushless electric machine 12 running wind paths that produce to pass electronic commutator 2 cooling fins and wears away heat.
The heat radiation plane of electronic commutator 2 is placed on complete machine air inlet 22 rears, the air inlet place of brushless electric machine 12 does not arrange complete machine air inlet 22, is provided with deep bead 24 in casing inside and brushless electric machine 12 and electronic commutator 2 can be enclosed in a less space (this space only have complete machine air inlet 22 places open air intake).
In the time of work, the rotation of the cooling wind blade of brushless electric machine forms negative pressure, and cooling air enters from complete machine air inlet 22 positions, after taking away heat through the heat-delivery surface of electronic commutator 2, the air inlet that enters motor is taken away the heat of brushless electric machine 12 inside, by air outlet 23 positions discharges.
The control procedure of the brushless chain saw of the utility model comprises the steps:
A, startup control procedure
Start-up performance: when main switch 10 closures, electronic commutator 2 is checked through the position signalling of Hall element on brushless electric machine 12, and provide corresponding control signal and control that on brushless electric machine 12, three-phase coil passes through electric current successively, thereby realize brushless electric machine 12 high efficiency rotations, and drive chain 6 rotation realization cutting purposes; When main switch 10 unclamped, brushless electric machine 12 can carry out free deceleration.
B, braking control procedure
The brake modes that the utility model provides has utilized the energy consumption mode of brushless electric machine 12 coils own to realize that motor stops fast, and the typical time is less than 0.15s.
Namely utilize the coil of brushless electric machine 12 own to produce braking effect, only need to provide a brake signal can realize braking effect to electronic commutator 2, cost and complete machine weight is reduction obviously.
Control procedure of the present utility model also comprises alarm indication process and protection process.
In the alarm indication process, whole brushless chain saw can show by electronic commutator 2 and alarm display apparatus 19 the real-time working state of complete machines, such as electric weight in real time, real-time working electric current, the functions such as line cutting speed, braking state prompting of complete machine temperature, real-time working in real time.
In the protection process, the power supply 8 of whole system and electronic commutator 2 can identification communications, and battery discharge is integrated in brushless control system, cross when battery put, parting system connects when overcurrent, excess Temperature, the protection battery system.
The power supply 8 of whole system and electronic commutator 2 can identification communications, and electronic commutator 2 is the regulation output of control loads automatically, reduces unloaded useless output, realize the machine energy-saving purpose service time that extends battery.
The beneficial effect of the brushless chain saw of the utility model is:
Utilize the energy consumption mode of the coil of motor own to realize that motor stops fast, namely utilize the coil of motor itself to produce braking effect, only need to provide a brake signal can realize braking effect to control system, cost and complete machine weight can obviously reduce;
Utilize brushless electric machine efficient high (generally more than 80%), long advantage of life-span, mix again deceleration device and increase output torque, compare with the direct conduction type brushless electric machine have that motor volume is little, cost is low, moment of torsion is large, the little advantage of brake electric current, optimized overall performance.
The above is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present utility model.
Claims (11)
1. brushless chain saw, comprise housing, brushless electric machine, gearbox device, power supply, electronic commutator, brake backplate, carrier bar and chain, described brushless electric machine, gearbox device and electronic commutator are arranged on enclosure interior, it is characterized in that, described brushless electric machine is connected with electronic commutator, and the clutch end of brushless electric machine is connected with gearbox device.
2. brushless chain saw according to claim 1, it is characterized in that, described gearbox device comprises gear box, output shaft assembly, gear box cover and sprocket wheel, described Gearbox is fixedly connected with the clutch end end of brushless electric machine, described output shaft assembly is fixedly installed in hole in Gearbox, described gear box cover is arranged on Gearbox, the output of described brushless electric machine is connected with the output shaft assembly by gear, and described output shaft assembly drive sprocket and then drive chain rotate.
3. brushless chain saw according to claim 2, is characterized in that, described tooth-formation of gear is involute shape or circular arc.
4. brushless chain saw according to claim 2, is characterized in that, described gearbox device is single-stage speed changing structure, multi-stage speed-changing structure or infinitely variable speed structure.
5. brushless chain saw according to claim 2, is characterized in that, described gear comprises driving wheel and driven pulley, and during less than the size of driven pulley, gearbox device is realized deceleration when the size of driving wheel; During greater than the size of driven pulley, gearbox device realizes accelerating function when the size of driving wheel.
6. brushless chain saw according to claim 1, is characterized in that, described enclosure interior also is provided with oil pump and oil can, and described oil pump one end is connected with gearbox device, and the other end is connected with oil can.
7. brushless chain saw according to claim 1, is characterized in that, is connected with alarm display apparatus on described housing, and described alarm display apparatus is connected with brushless electric machine, gearbox device and electronic commutator.
8. brushless chain saw according to claim 7, it is characterized in that, be connected with switch trigger, main switch, the first microswitch, the second microswitch, brake backplate and light switch on described housing, described switch trigger and main switch interlock arrange, described the first microswitch, the second microswitch arrange with the interlock of brake backplate, and described main switch, the first microswitch, the second microswitch and light switch all are connected with electronic commutator.
9. brushless chain saw according to claim 1, is characterized in that, described electronic commutator also connects the input of power supply, and the power transmission mode of described electronic commutator is direct current input or alternating current input.
10. brushless chain saw according to claim 9, is characterized in that, described power supply is dc source, and the input of described power supply is connected with dismountable dc power supply, dismountable portable battery bag or alternating current-direct current transformer; Described power supply is AC power, and the input of described power supply directly connects civil power.
11. brushless chain saw according to claim 1, it is characterized in that, also be provided with complete machine air inlet and air outlet on described housing, described enclosure interior is provided with deep bead, the heat radiation plane of described electronic commutator is arranged on the rear of complete machine air inlet or the place ahead of air outlet, is used for making the air-flow of the brushless electric machine running wind path that produces to pass the electronic commutator cooling fins and wears away heat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220652230 CN202998897U (en) | 2012-12-03 | 2012-12-03 | Brushless chain saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220652230 CN202998897U (en) | 2012-12-03 | 2012-12-03 | Brushless chain saw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202998897U true CN202998897U (en) | 2013-06-19 |
Family
ID=48590547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220652230 Expired - Fee Related CN202998897U (en) | 2012-12-03 | 2012-12-03 | Brushless chain saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202998897U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102972216A (en) * | 2012-12-03 | 2013-03-20 | 常州格力博有限公司 | Brushless chain saw |
| CN104285694A (en) * | 2013-07-19 | 2015-01-21 | 苏州宝时得电动工具有限公司 | Chain saw |
| CN104604548A (en) * | 2013-11-05 | 2015-05-13 | 南京德朔实业有限公司 | Electric gardening tool |
-
2012
- 2012-12-03 CN CN 201220652230 patent/CN202998897U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102972216A (en) * | 2012-12-03 | 2013-03-20 | 常州格力博有限公司 | Brushless chain saw |
| WO2014086095A1 (en) * | 2012-12-03 | 2014-06-12 | 常州格力博有限公司 | Brushless chainsaw |
| EP2926647A4 (en) * | 2012-12-03 | 2016-07-27 | Changzhou Globe Co Ltd | Brushless chainsaw |
| CN104285694A (en) * | 2013-07-19 | 2015-01-21 | 苏州宝时得电动工具有限公司 | Chain saw |
| CN104604548A (en) * | 2013-11-05 | 2015-05-13 | 南京德朔实业有限公司 | Electric gardening tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20130619 Termination date: 20191203 |