CN206776054U - Band slowly brakes and the circuit of electronic speed regulation and the electric tool with the circuit - Google Patents
Band slowly brakes and the circuit of electronic speed regulation and the electric tool with the circuit Download PDFInfo
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- CN206776054U CN206776054U CN201720470861.5U CN201720470861U CN206776054U CN 206776054 U CN206776054 U CN 206776054U CN 201720470861 U CN201720470861 U CN 201720470861U CN 206776054 U CN206776054 U CN 206776054U
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- circuit
- handle
- electric tool
- brake
- microswitch
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Abstract
The utility model discloses a kind of slow electric tool for braking with the circuit of electronic speed regulation and having the circuit of band, circuit is mainly by battery bag, control circuit board, motor, brake resistor and microswitch etc. are formed, the battery bag, motor and brake resistor are connected in parallel on control circuit board, microswitch is connected on the loop of control circuit board, and start loop and brake circuits are respectively constituted by handover operation microswitch, so that whole circuit possesses the function of slow brake, and while the brake stand-by period is reduced, brake process is also more steady, safety；And be also connected with showing wiring board on control circuit board, electronic speed regulation single-chip microcomputer element is which is provided with, electronic speed regulation function can be realized, to meet the use needs of some workplaces；In addition, additionally providing the electric tool with the circuit, it by the circuit rational deployment in electric tool, facilitates the use of operator on the basis of electric tool structure complexity is not increased.
Description
Technical field
A kind of circuit for electric tool is the utility model is related to, the circuit has the slowly work(of brake and electronic speed regulation
Energy；Also relate to a kind of electric tool with foregoing circuit.
Background technology
At present, the trimming in terms of afforestation and maintenance are required for using substantial amounts of electric tool, such as motor-driven brush saw, electricity
Dynamic grass-mowing machine and electric trimmer etc. are all common afforestation electric tools, its structure be mostly by handle, connecting tube,
Head of hand and belt cutter piece etc. is formed, and be used to controlling the electric tool open and close work circuit be then laid out be arranged on it is above-mentioned
In structure, battery bag, control circuit board and the motor of circuit, work of the battery bag mainly as electric tool are such as formed
Make power supply, control circuit board is then used for the keying for controlling motor, and then realizes the various working conditions of electric tool.So
And foregoing circuit is only a very simple and crude operating circuit, the start of electric tool is being realized by control circuit board or is being stopped
During machine, realized in a manner of directly connect circuit loop or direct disconnecting circuit loop, this circuit control mode
In the presence of very big use defect：First, direct disconnecting circuit loop is a kind of very unexpected brake, and cutting blade is all
It is fixed on blade shaft in a manner of screw thread screws nut, during unexpected power interruption braking, is often screwed to screw thread
Place brings a reverse impulse force, and then causes screw thread to screw and loosen, and influences the normal cutting of blade, and knife is there is also if serious
The hazard event that piece flies out, larger potential safety hazard is brought to using；Meanwhile this brake can only wait motor
Naturally stall, brake stand-by period length, use is more inconvenient；2nd, some workplaces need the cutting blade of electric tool to have
Standby different cutting rotating speed, but the circuit connects loop and is only capable of providing a kind of cutting rotating speed, and this also brings some inconvenience to use.
In addition, if foregoing circuit be provided simultaneously with it is slow brake and electronic speed regulation function, then by the circuit how
On the basis of not increasing electric tool structure complexity, rational deployment is arranged in electric tool, and one needs what is overcome to ask
Topic, it is necessary to manufacturer give solution and it is perfect.
The content of the invention
The defects of technical problem to be solved in the utility model is to overcome prior art and one kind is provided and is provided simultaneously with
The slowly circuit of brake and electronic speed regulation, while additionally provide the electric tool with the circuit.
Technical problem of the present utility model is achieved through the following technical solutions：
A kind of band slowly circuit of brake and electronic speed regulation, including battery bag, control circuit board and motor, the circuit
Also including brake resistor and microswitch, the battery bag, motor and brake resistor are connected in parallel on control circuit board,
The microswitch is connected on the loop of control circuit board；Connection shows wiring board, the display line on described control circuit board
Road plate is provided with electronic speed regulation single-chip microcomputer element；Described microswitch disconnects brake resistor, and the motor is connected in parallel on control
On wiring board and form start loop；Described microswitch individually connects brake resistor and motor, and forms and brake back
Road.
Display box and display nameplate are installed, the display nameplate is provided with power supply mark and power supply on described display wiring board
Start indicator lamp, it is additionally provided with the speed change mark and top gear indicator lamp, middling speed corresponding with the electronic speed regulation single-chip microcomputer element
Shelves indicator lamp and bottom gear indicator lamp.
Described microswitch is normally opened three pin microswitch, and with NC ends, the setting for being arranged on brake resistor negative pole
At the COM ends of motor negative pole and the NO ends for being arranged on control circuit board negative pole.
Described circuit is start loop, and the COM ends disconnect NC ends and connect NO ends；Described circuit is brake circuits,
The COM ends disconnect NO ends and connect NC ends.
Described display wiring board, which is provided with, controls the standby closing element closed automatically of circuit.
A kind of electric tool, including handle, connecting tube, handle and head, in addition to circuit；Described battery bag inserting is set
Put and be installed in handle base, control circuit board, display wiring board and brake resistor in handle, show that nameplate is exposed and be arranged on
Handle top；Described microswitch is arranged in handle, and is controlled and opened and closed by the main switch rocking arm with self-locking push button；Described
Motor is arranged in head, reduction gear box is additionally provided with the head, head is externally provided with cutting blade, and motor is through institute
Stating reduction gear box drives the cutting blade to work.
Balancing weight is set in described handle, and the balancing weight bottom is provided with crash roll；Described brake resistor is aluminum hull electricity
Resistance, and be fixedly mounted on balancing weight.
Described handle is the U-shaped handle or straight handle being fixedly mounted in connecting tube.
Wherein one end of the U-shaped handle is provided with the fixed handle sleeve of suit, and the other end is provided with and mutually embraced by two half-shells
Close fixed handle shell；Described self-locking push button and main switch rocking arm is exposed to be arranged in handle shell；Described microswitch
In handle shell.
The protective cover being fixedly mounted in connecting tube is provided with rear side of described cutting blade.
Compared with prior art, the utility model mainly provide it is a kind of by battery bag, control circuit board, motor,
The circuit of the composition such as brake resistor and microswitch, and it is connected in battery bag, motor and brake resistor in parallel control
On wiring board, microswitch is connected on the loop of control circuit board；Therefore, it is able to by the handover operation of microswitch
Start loop and brake circuits are formed, so that whole circuit possesses the function of slow brake, and are waited reducing brake
While time, brake process is also more steady, safety；And it is also connected with showing wiring board, the display circuit on control circuit board
Plate is provided with electronic speed regulation single-chip microcomputer element, can realize electronic speed regulation function, to meet the use needs of some workplaces；Separately
Outside, the electric tool with the circuit is additionally provided, it closes the circuit on the basis of electric tool structure complexity is not increased
Removing the work office is arranged in electric tool, so as to facilitate the use of operator.
Brief description of the drawings
Fig. 1 is the start circuit diagram of the utility model circuit.
Fig. 2 is the brake circuits schematic diagram of the utility model circuit.
Fig. 3 is the electric tool structure schematic diagram that is designed according to the utility model circuit（U-shaped handle）.
Fig. 4 is the electric tool structure schematic diagram that is designed according to the utility model circuit（Straight handle）.
Fig. 5 is Fig. 3 partial sectional view.
Fig. 6 is Fig. 3 three-dimensional exploded view.
Fig. 7 is the structural representation of display nameplate.
Embodiment
The utility model embodiment will be elaborated again by above-mentioned accompanying drawing below.
As shown in Fig. 1 ~ Fig. 7,1. control circuit boards, 2. battery bags, 3. brake resistors, 4. microswitches, 5. motors,
6. show wiring board, 7. electronic speed regulation single-chip microcomputer elements, 8. closing elements, 9. handles, 10. display nameplates, 11. lead collars, 12.
Handle, 13. handle sleeves, 14. handle shells, 15. brace clips, 16. main switch rocking arms, 17. fixed seats, 18. connecting tubes, 19. heads,
20. cutting blade, 21. protective covers, 22. self-locking push buttons, 23. 3 core connecting conducting wires, 24. balancing weights, 25. pins, 26. pole pieces,
27. crash roll, 28. display boxes, 29. installing plates, 30. hex nuts, 31. location-plates, 32. motor gears, 33. reduction gearing,
34. blade shaft, 35. bearings, 36. axle sleeves, 37. cover plates, 38. fixed covers, 39. power supplys mark, 40. power initiation indicator lamps, 41.
Speed change mark, 42. top gear indicator lamps, 43. mid ranger indicator lamps, 44. bottom gear indicator lamps.
The slow electric tool for braking with the circuit of electronic speed regulation and there is the circuit of band, relate generally to a kind of for electric
The circuit of power driven tools, and the electric tool with the circuit, electric tool described in the utility model typically refer to afforestation
Electric tool, such as motor-driven brush saw, electric grass mowing equipment and electric trimmer；Certainly, slowly braked suitable for above-mentioned this band
It is also many with the electric tool of the function of electronic speed regulation, it should be appreciated by those skilled in the art that the scope of application of the circuit is not
In terms of being confined to afforestation, it is also applied on the electric tool of other field, therefore the utility model is herein just no longer one by one
Enumerate, be only described in detail using the motor-driven brush saw in afforestation electric tool as one of specific embodiment.
According to design of the present utility model, slowly the circuit of brake and electronic speed regulation is mainly by battery bag 2, control to band
Wiring board 1, motor 5, brake resistor 3 and microswitch 4 processed etc. are formed；As shown in Figure 1 and Figure 2, battery bag 2, motor
5 and brake resistor 3 be connected in parallel on control circuit board 1, microswitch 4 is then connected on the loop of control circuit board 1, should
Microswitch 4 uses normally opened three pin microswitch, and has and be arranged on the NC ends of the negative pole of brake resistor 3, is arranged on motor 5
The COM ends of negative pole and the NO ends for being arranged on the negative pole of control circuit board 1, the open state for connecting loop and cutoff circuit can be formed
Braking state, it is specially：When microswitch 4 as shown in figure 1, COM ends disconnect with NC ends, but it is connected with NO ends, then brake resistor 3
Depart from whole loop, motor 5 is connected in parallel on control circuit board 1, and circuit constitutes start loop, and motor-driven brush saw starts energy
Enough cuttings that runs well；When microswitch 4 as shown in Fig. 2 COM ends disconnect with NO ends, but it is connected with NC ends, then whole loop is broken
Open, brake resistor 3 individually connects into loop with motor 5, and circuit just constitutes brake circuits, then by brake resistor 3 just
The brake stalling that motor-driven brush saw is steady within a short period of time, safe can be made, and brake resistor 3 can also be selected according to actual conditions
Different resistances, to meet the use needs of different electric tools.
Connection shows wiring board 6 on described control circuit board 1, and the display wiring board is provided with electronic speed regulation single-chip microcomputer member
Part 7 and closing element 8, display box 28 and display nameplate 10 are also equipped with, electricity exposed as shown in Figure 7 is provided with display nameplate
Source mark 39 and power initiation indicator lamp 40, and speed change mark 41, top gear indicator lamp 42, mid ranger indicator lamp 43 and low speed
Keep off indicator lamp 44.
Described power supply mark 39 and power initiation indicator lamp 40 are mainly associated with closing element 8, in startup power supply
And make power initiation indicator lamp 40 green light light after, the power supply of whole circuit, motor-driven brush saw just can normal use；Power off
And after making the green light extinguishing of power initiation indicator lamp 40, whole down circuitry, motor-driven brush saw is stopped using；And closing element 8
Effect be：When forget close power supply when, shut down, it is standby one minute after, the automatic shutoff circuit of closing element 8, close electricity
Dynamic brush cutter, so as to reach the purpose of safeguard protection.
Described speed change mark 41 and third speed indicator lamp are mainly associated with electronic speed regulation single-chip microcomputer element 7, are led to
Crossing electronic speed regulation single-chip microcomputer element 7 can make operator's selection use top gear or mid ranger or bottom gear, and make respective notch
After indicator lamp green light is lighted, the working speed with regard to that can obtain the gear, the i.e. output speed of cutting blade 20 can select height respectively
Fast shelves or mid ranger or bottom gear.
The motor-driven brush saw of the circuit is installed as shown in Fig. 3 ~ Fig. 6, its structure includes handle 9, connecting tube 18, the and of handle 12
Head 19 etc.；Described handle 9 be by the mutual obvolvent of left and right half-shell in the rear end of connecting tube 18, be formed by fixedly connecting again by screw,
Described battery bag 2 is plugged on the bottom of handle 9 by component elasticities such as pole piece 26, pin 25 and springs, and it is a kind of removable
Rechargeable battery bag, provide operation power mainly as working power and for motor-driven brush saw；Control is provided with described handle 9
Wiring board 1, display wiring board 6, brake resistor 3 and balancing weight 24, display nameplate 10 is exposed to be arranged on the top of handle 9；Described
Brake resistor 3 is aluminum casing resistor, and is fixedly mounted on balancing weight 24, causes brake resistor 3 to be generated heat in composition brake circuits
When, it can be radiated by balancing weight 24；In addition, balancing weight 24 is used for the weight for balancing head 19, to prevent complete machine " head
Weight pin it is light " phenomenon, its bottom is provided with crash roll 27, plays cushioning effect.
Described handle 12 is U-shaped handle or straight handle, and the handle is fixedly mounted on connecting tube 18 by fixed seat 17
On, U-shaped handle is made up of left handle pipe and right handle tube, and left handle tube end is provided with the fixed handle sleeve 13 of suit, right handle
Tube end is provided with the handle shell 14 fixed by the mutual obvolvent of two half-shells；Described main switch rocking arm 16 and limitation main switch rocking arm
The self-locking push button 22 of startup is exposed to be arranged in handle shell 14, and microswitch 4 is arranged in handle shell 14, its course of work
For：During power initiation, release self-locking push button 22 simultaneously presses the contact microswitch 4 of main switch rocking arm 16, then microswitch starts band
Dynamic circuit forms start loop, and the cutting blade 20 on head 19 is in cutting working condition；Main switch rocking arm 16 is decontroled to depart from
Microswitch 4, then microswitch disconnecting circuit and brake circuits are formed, the cutting blade 20 on head 19 is in slowly brake shape
State.
It is hidden in described connecting tube 18 to be provided with the three core connecting conducting wires 23 for forming circuit loop；Connecting tube rear portion is close
Handle 9 is provided with lead collar 11, facilitates the hidden of three core connecting conducting wires；It is provided with positioned at the rear portion of handle 12 in connecting tube 18 and is consolidated with bolt
Fixed brace clip 15, available for the brace connection for bearing motor-driven brush saw；The front end of connecting tube 18 is provided with fillister head screw, put down
Pad, installing plate 29 make protective cover 21 that is being fixedly mounted and being located at the rear side of cutting blade 20, and protection when can play cutting is made
With.
Described head 19 is to be fixed on the front end of connecting tube 18 by two mutual obvolvents of half-shell, and driving is provided with the head 19
Motor 5 and reduction box, and motor 5 is fixedly mounted in head 19 with location-plate 31, reduction box is pacified by blade shaft 34, transmission
Reduction gearing 33 and axle sleeve 36, a pair of bearings 35 of supporting blade axle 34 on blade shaft, it is sleeved on blade shaft 34
The grade of cover plate 37 is formed, and the lower end of blade shaft 34 is stretched out after head 19 is fixedly mounted a cutter by fixed cover 38 and hex nut 30
Piece 20, reduction gearing 33 engage the motor gear 32 of motor 5, and its power transfer path is：Motor 5 is through motor gear
32nd, reduction gearing 33 drives blade shaft 34 to rotate, and then drives the rotation work of cutting blade 20.
Described above is only specific embodiment of the utility model, it should be appreciated by those skilled in the art that any and reality
The equivalent structure design of example is applied, should be included within the scope of protection of the utility model.
Claims (10)
- A kind of 1. band slowly circuit of brake and electronic speed regulation, including battery bag（2）, control circuit board（1）And motor （5）, it is characterised in that the circuit also includes brake resistor（3）And microswitch（4）, the battery bag（2）, motor（5）With Brake resistor（3）It is connected in control circuit board in parallel（1）On, the microswitch（4）It is connected to control circuit board（1）Loop On；Described control circuit board（1）Upper connection shows wiring board（6）, it is first that the display wiring board is provided with electronic speed regulation single-chip microcomputer Part（7）；Described microswitch（4）Disconnect brake resistor（3）, the motor（5）It is connected in parallel on control circuit board（1）Upper and structure Into start loop；Described microswitch（4）Individually connection brake resistor（3）And motor（5）, and form brake circuits.
- 2. band according to claim 1 slowly brakes and the circuit of electronic speed regulation, it is characterised in that described display circuit Plate（6）Upper installation display box（28）With display nameplate（10）, the display nameplate is provided with power supply mark（39）Refer to power initiation Show lamp（40）, it is additionally provided with and the electronic speed regulation single-chip microcomputer element（7）Corresponding speed change mark（41）And top gear indicator lamp （42）, mid ranger indicator lamp（43）With bottom gear indicator lamp（44）.
- 3. band according to claim 1 slowly brakes and the circuit of electronic speed regulation, it is characterised in that described microswitch （4）For normally opened three pin microswitch, and with being arranged on brake resistor（3）The NC ends of negative pole, it is arranged on motor（5）Negative pole COM ends and be arranged on control circuit board（1）The NO ends of negative pole.
- 4. band according to claim 3 slowly brakes and the circuit of electronic speed regulation, it is characterised in that described circuit is to open Machine loop, the COM ends disconnect NC ends and connect NO ends；Described circuit is brake circuits, and the COM ends disconnect NO ends and connect NC End.
- 5. band according to claim 1 slowly brakes and the circuit of electronic speed regulation, it is characterised in that described display circuit Plate（6）It is provided with and controls the standby closing element closed automatically of circuit（8）.
- 6. a kind of electric tool, including handle（9）, connecting tube（18）, handle（12）And head（19）, it is characterised in that it is described Electric tool also includes the circuit according to any one of claim 1 ~ 5；Described battery bag（2）Inserting is arranged on handle （9）Bottom, control circuit board（1）, display wiring board（6）And brake resistor（3）It is installed in handle（9）It is interior, show nameplate （10）It is exposed to be arranged on handle（9）Top；Described microswitch（4）Installed in handle（12）It is interior, and by band self-locking push button （22）Main switch rocking arm（16）Control opens and closes；Described motor（5）Installed in head（19）It is interior, it is additionally provided with the head Reduction gear box, head（19）It is externally provided with cutting blade（20）, motor（5）The cutter are driven through the reduction gear box Piece（20）Work.
- 7. electric tool according to claim 6, it is characterised in that described handle（9）Interior setting balancing weight（24）, should Balancing weight bottom is provided with crash roll（27）；Described brake resistor（3）For aluminum casing resistor, and it is fixedly mounted on balancing weight（24） On.
- 8. electric tool according to claim 6, it is characterised in that described handle（12）To be fixedly mounted on connecting tube （18）On U-shaped handle or straight handle.
- 9. electric tool according to claim 8, it is characterised in that wherein one end of the U-shaped handle is provided with suit and fixed Handle sleeve（13）, the other end is provided with the handle shell fixed by the mutual obvolvent of two half-shells（14）；Described self-locking push button（22） With main switch rocking arm（16）It is exposed to be arranged on handle shell（14）On；Described microswitch（4）Installed in handle shell（14）It is interior.
- 10. electric tool according to claim 6, it is characterised in that described cutting blade（20）Rear side is provided with fixed pacify Mounted in connecting tube（18）On protective cover（21）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720470861.5U CN206776054U (en) | 2017-05-01 | 2017-05-01 | Band slowly brakes and the circuit of electronic speed regulation and the electric tool with the circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720470861.5U CN206776054U (en) | 2017-05-01 | 2017-05-01 | Band slowly brakes and the circuit of electronic speed regulation and the electric tool with the circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206776054U true CN206776054U (en) | 2017-12-22 |
Family
ID=60709419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720470861.5U Expired - Fee Related CN206776054U (en) | 2017-05-01 | 2017-05-01 | Band slowly brakes and the circuit of electronic speed regulation and the electric tool with the circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206776054U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110265248A (en) * | 2019-07-18 | 2019-09-20 | 科都电气有限公司 | The commutation brake gear and direct current electric power tools switch of direct current electric power tools switch |
-
2017
- 2017-05-01 CN CN201720470861.5U patent/CN206776054U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110265248A (en) * | 2019-07-18 | 2019-09-20 | 科都电气有限公司 | The commutation brake gear and direct current electric power tools switch of direct current electric power tools switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171222 Termination date: 20200501 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |