CN108605667A - Electric tool - Google Patents
Electric tool Download PDFInfo
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- CN108605667A CN108605667A CN201611110408.XA CN201611110408A CN108605667A CN 108605667 A CN108605667 A CN 108605667A CN 201611110408 A CN201611110408 A CN 201611110408A CN 108605667 A CN108605667 A CN 108605667A
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- Prior art keywords
- motor
- switch
- brake
- electrically connected
- electric tool
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Abstract
A kind of electric tool, including main body, motor, fan, working accessory and brake control circuit, the motor and the fan may be contained in the main body, the fan rotates under motor driving, the working accessory is removably attachable in the main body, the brake control circuit includes control switch and winding assembly, the control switch and the motor are electrically connected to form operating loop and brake circuit, the winding assembly is electrically connected between the control switch and the motor, to store energy in the operating loop, and counter electromotive force is generated in the brake circuit and brakes the motor stopping driving fan.It in the electric tool of the present invention, is braked by brake control circuit when motor stops, shortening fan rotation time, ensured after working accessory is dismantled by main body, fan has stopped operating, and ensures operator's personal safety.
Description
Technical field
The present invention relates to gardening field of power tools, more particularly to a kind of electric tool being provided with brake control circuit.
Background technology
Circle skill electric tool is the equipment that meadow or other surfaces are cleaned or cleaned, such as blower etc., master
It is usually provided with a port on body, is used for detachably connected blower and/or aspiration channel.Blower is used for drying,
The high-speed flow blown out from gas blow pipe carries out the objects such as the fallen leaves for becoming scattered about ground to blow poly- heap；Aspiration channel is used for air draught, leaf
High speed rotation is taken turns, the inspiratory airflow of formation sucks ground fallen leaves and dust together, to crush and be discharged by dust leg
In dust bag.
However, it is this blow, connection that aspiration channel and main body are detachable design so that blow, aspiration channel can be often disassembled,
And the fan that main body is contained in when if dismantling still is rotating, operator will be readily accessible the fan of rotation and cause
Injury, therefore there may be some potential safety problemss for this blower, do not meet safety requirements.
Invention content
Based on this, it is necessary to provide a kind of setting brake control circuit to shorten fan rundown time to reach safe and reliable
Electric tool.
A kind of electric tool, including main body, motor, fan, working accessory and brake control circuit, the motor and institute
It states fan to may be contained in the main body, the fan rotates under motor driving, and the working accessory removably connects
It is connected in the main body, the brake control circuit includes control switch and winding assembly, and the control switchs and the motor
It is electrically connected to form operating loop and brake circuit, the winding assembly is electrically connected between the control switch and the motor,
To store energy in the operating loop, and generates counter electromotive force in the brake circuit and brake the motor stopping driving
The fan.
Control switch includes first switch component and second switch component in one of the embodiments, and described the
One switch module includes the first starting switch and the first brake switch, and the second switch component includes the second starting switch and the
Two brake switches；First starting switch, the second starting switch and the motor are electrically connected to form the operating loop, described
First brake switch, second brake switch and the motor are electrically connected to form the brake circuit.
The first switch component includes the first common end and is selected for first common end in one of the embodiments,
The first choice end of one selection and the second selection end, the second switch component are public including the second common end and for described second
Select the third selection end and the 4th selection end of a selection in end；The motor includes the first end being connect with both ends of power and second
End；The first choice end is electrically connected with the first end of the motor, and the second selection end selects end with the third
It is electrically connected and is electrically connected to simultaneously with the third selection end second end of the motor；It is described 4th selection end with it is described
Power electric connection, the winding assembly are electrically connected between first common end and second common end.
The winding assembly includes the first winding and the second winding in one of the embodiments, and described first around string formation
It is coupled between the power supply and the first end, second windings in series is in first common end and second common end
Between.
In one of the embodiments, the winding assembly include the first winding and the second winding, first winding and
Second windings in series is between first common end and second common end.
The first switch component and the second switch component synchronization or asynchronous controlling in one of the embodiments,.
The brake control circuit further includes starting switch in one of the embodiments, the starting switch electrical connection
Between the first end and the power supply of the motor.
The electric tool is blower in one of the embodiments, and the working accessory is to be removable installed in
/ aspiration channel is blown in the main body.
It in the electric tool of the present invention, is braked by brake control circuit when motor stops, shortening fan and turn
The dynamic time, ensure after working accessory is dismantled by main body, fan has stopped operating, and ensures operator's personal safety.
Description of the drawings
Fig. 1 is the circuit diagram of brake control circuit in first embodiment of the invention；
Fig. 2 is the circuit diagram of brake control circuit in second embodiment of the invention.
Specific implementation mode
To facilitate the understanding of the present invention, below with reference to relevant drawings to invention is more fully described.In attached drawing
Give presently preferred embodiments of the present invention.But the present invention can realize in many different forms, however it is not limited to this paper institutes
The embodiment of description.Keep the understanding to the disclosure more thorough on the contrary, purpose of providing these embodiments is
Comprehensively.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.
Unless otherwise defined, all of technologies and scientific terms used here by the article and belong to the technical field of the present invention
The normally understood meaning of technical staff is identical.Used term is intended merely to description tool in the description of the invention herein
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the Listed Items of pass.
Referring to Fig.1 and 2, in present pre-ferred embodiments, electric tool includes main body, motor 10, (figure is not for fan
Show), working accessory and brake control circuit 20.Motor 10 and fan may be contained in main body, and fan drives in motor 10
Lower high speed rotation simultaneously generates Push-pull Flow.Working accessory is removably attachable in main body, brake control circuit 20 and motor 10
Electrical connection, to shorten the rotation time of the fan driven by motor 10, ensures for being braked when motor 10 stops operating
After working accessory is dismantled by main body, fan has stopped operating, and ensures operator's personal safety.
In this embodiment, electric tool is blower, and working accessory is to be removably attachable to blowing in main body
Air hose and/or aspiration channel.It is to be appreciated that in some other embodiment, electric tool can be other tools, and working accessory is also
It can be the other attachmentes being detachably arranged, be not limited thereto.
Specifically, brake control circuit 20 includes control switch 21 and winding assembly 23.Wherein, switch 21 and motor are controlled
10 electrical connections, and the brake circuit for forming the operating loop for starter motor 10 and motor 10 being braked.Winding assembly
23 are electrically connected between control switch 21 and motor 10, and energy is stored in operating loop and generates anti-electricity in brake circuit
Kinetic potential, to realize the braking to motor 10.
It includes first switch component 211 and second switch component 212 to control switch 21, and first switch component 211 includes the
One starting switch and the first brake switch, second switch component 22 include the second starting switch and the second brake switch.First opens
Dynamic switch, the second starting switch and motor 10 are electrically connected to form operating loop, the first brake switch, the second brake switch and motor
10 are electrically connected to form brake circuit.
First switch component 211 includes the first common end S1 and selects the first choice end K1 of a selection for the first common end S1
With the second selection end K2, second switch component 212 includes the second common end S2 and selects the third of a selection for the second common end S2
Select the selections of end K3 and the 4th end K4.Motor 10 includes the first end M1 being electrically connected with 30 both ends of power supply and second end M2, the
One selection end K1 is electrically connected with the first end M1 of motor 10, and the second selection end K2 is electrically connected with third selection end K3 and is selected with third
It selects end K3 while being electrically connected to the second end M2 of motor 10, the 4th selects end K4 to be electrically connected with power supply 30.
In this embodiment, first switch component 211 and the double-pole double throw that second switch component 212 is synchronous control
Switch.It is to be appreciated that in some other embodiment, first switch component 211 and second switch component 212 are respectively hilted broadsword
Commutator, two single-pole double-throw switch (SPDT)s can be controlled either synchronously or asynchronously.
Winding assembly 23 is electrically connected between the first common end S1 and the second common end S2, for being stored in operating loop
Energy and in brake circuit generate counter electromotive force motor 10 is braked.
Winding assembly 23 includes the first winding 231 and the second winding 232 in one of the embodiments,.Wherein, first around
Group 231 is series between power supply 30 and the first end M1 of motor 10, and it is public that the second winding 232 is series at the first common end S1 and second
Altogether between the S2 of end.As the second selection end K2 of the first common end S1 selections and the 4th selection end K4 of the second common end S2 selections, electricity
Source 30, the first winding 231, first switch component 211, second switch component 212, the second winding 232 and motor 10 form fortune
Row circuit.When the first common end S1 selects first choice end K1 and the second common end S2 selection thirds select end K3, motor 10
It is disconnected with power supply 30, first switch component 211, second switch component 212, the second winding 232 and the formation of motor 10 are braked back
Road, the second winding 232 generate counter electromotive force, form the reverse current of brake motor 10.
In another embodiment, it is public to be series at the first common end S1 and second for the first winding 231 and the second winding 232
Altogether between the S2 of end.As the second selection end K2 of the first common end S1 selections and the 4th selection end K4 of the second common end S2 selections, electricity
Source 30, the first winding 231, first switch component 211, second switch component 212, the second winding 232 and motor 10 form fortune
Row circuit.When the first common end S1 selects first choice end K1 and the second common end S2 selection thirds select end K3, motor 10
It is disconnected with power supply 30, the first winding 231, first switch component 211, second switch component 212, the second winding 232 and motor
10 form brake circuit, and the second winding 232 generates counter electromotive force, forms the reverse current of brake motor 10.
Further, brake control circuit 20 further includes starting switch 25, and starting switch 25 is electrically connected to the of motor 10
Between one end M1 and power supply 30.
It in the electric tool of the present invention, is braked by brake control circuit 20 when motor 10 stops, shortening wind
Rotation time is fanned, is ensured after working accessory is dismantled by main body, fan has stopped operating, and ensures operator's personal safety.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Cannot the limitation to the scope of the claims of the present invention therefore be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (8)
1. a kind of electric tool, it is characterised in that：Including main body, motor, fan, working accessory and brake control circuit, institute
It states motor and the fan may be contained in the main body, the fan rotates under motor driving, the working accessory
It is removably attachable in the main body, the brake control circuit includes control switch and winding assembly, the control switch
It is electrically connected to form operating loop and brake circuit with the motor, the winding assembly is electrically connected to the control switch and described
Between motor, to store energy in the operating loop, and generates counter electromotive force in the brake circuit and brake the horse
The fan is driven up to stopping.
2. electric tool as described in claim 1, it is characterised in that：The control switch includes first switch component and second
Switch module, the first switch component include the first starting switch and the first brake switch, and the second switch component includes
Second starting switch and the second brake switch；First starting switch, the second starting switch and the motor are electrically connected to form
The operating loop, first brake switch, second brake switch and the motor are electrically connected to form described brake back
Road.
3. electric tool as claimed in claim 2, it is characterised in that：The first switch component includes the first common end and confession
It includes the second common end that the first choice end of a selection and the second selection end, the second switch component are selected in first common end
And the third selection end and the 4th selection end of a selection are selected for second common end；The motor includes and both ends of power is electric
The first end and second end of connection；The first choice end is electrically connected with the first end of the motor, second selection
Hold the second end for being electrically connected with third selection end and being electrically connected to the motor simultaneously with third selection end；Institute
State the 4th selection end and the power electric connection, the winding assembly is electrically connected to first common end and described second public
Between end.
4. electric tool as claimed in claim 3, it is characterised in that：The winding assembly include the first winding and second around
Group, for first windings in series between the power supply and the first end, second windings in series is public in described first
Between end and second common end.
5. electric tool as claimed in claim 3, it is characterised in that：The winding assembly include the first winding and second around
Group, first winding and second windings in series are between first common end and second common end.
6. electric tool as described in any one in claim 1-5, it is characterised in that：The first switch component and described second
Switch module either synchronously or asynchronously controls.
7. electric tool as claimed in claim 5, it is characterised in that：The brake control circuit further includes starting switch, institute
Starting switch is stated to be electrically connected between the first end of the motor and the power supply.
8. electric tool as described in claim 1, it is characterised in that：The electric tool is blower, the working accessory
/ aspiration channel is blown to be removable installed in the main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611110408.XA CN108605667B (en) | 2016-12-06 | 2016-12-06 | Electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611110408.XA CN108605667B (en) | 2016-12-06 | 2016-12-06 | Electric tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108605667A true CN108605667A (en) | 2018-10-02 |
| CN108605667B CN108605667B (en) | 2021-07-13 |
Family
ID=63643381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611110408.XA Active CN108605667B (en) | 2016-12-06 | 2016-12-06 | Electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108605667B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1825746A (en) * | 2006-04-07 | 2006-08-30 | 孙鹤鸣 | Series electric machine with electric braking function |
| CN101005257A (en) * | 2006-01-17 | 2007-07-25 | 台达电子工业股份有限公司 | Fan system and its real time stop device |
| CN201057998Y (en) * | 2007-06-18 | 2008-05-14 | 苏州宝时得电动工具有限公司 | Blowing-suction machines |
| CN202190240U (en) * | 2011-07-30 | 2012-04-11 | 宁波爱乐吉电动工具有限公司 | Pruning machine |
| CN202292696U (en) * | 2011-10-25 | 2012-07-04 | 福建惠安县坚固电机有限公司 | Double-speed electric tool |
| CN103746615A (en) * | 2013-12-25 | 2014-04-23 | 宁波爱乐吉电动工具有限公司 | Pruner brake circuit |
| CN204425214U (en) * | 2015-04-03 | 2015-06-24 | 弘大集团有限公司 | The electric tool of strap brake function |
| CN204435285U (en) * | 2014-12-22 | 2015-07-01 | 苏州宝时得电动工具有限公司 | Blower |
| CN105656359A (en) * | 2014-11-11 | 2016-06-08 | 南京德朔实业有限公司 | Electric tool and brake circuit suitable for motor |
-
2016
- 2016-12-06 CN CN201611110408.XA patent/CN108605667B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101005257A (en) * | 2006-01-17 | 2007-07-25 | 台达电子工业股份有限公司 | Fan system and its real time stop device |
| CN1825746A (en) * | 2006-04-07 | 2006-08-30 | 孙鹤鸣 | Series electric machine with electric braking function |
| CN201057998Y (en) * | 2007-06-18 | 2008-05-14 | 苏州宝时得电动工具有限公司 | Blowing-suction machines |
| CN202190240U (en) * | 2011-07-30 | 2012-04-11 | 宁波爱乐吉电动工具有限公司 | Pruning machine |
| CN202292696U (en) * | 2011-10-25 | 2012-07-04 | 福建惠安县坚固电机有限公司 | Double-speed electric tool |
| CN103746615A (en) * | 2013-12-25 | 2014-04-23 | 宁波爱乐吉电动工具有限公司 | Pruner brake circuit |
| CN105656359A (en) * | 2014-11-11 | 2016-06-08 | 南京德朔实业有限公司 | Electric tool and brake circuit suitable for motor |
| CN204435285U (en) * | 2014-12-22 | 2015-07-01 | 苏州宝时得电动工具有限公司 | Blower |
| CN204425214U (en) * | 2015-04-03 | 2015-06-24 | 弘大集团有限公司 | The electric tool of strap brake function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108605667B (en) | 2021-07-13 |
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