CN201298161Y - Safety control device of an electric tool - Google Patents
Safety control device of an electric tool Download PDFInfo
- Publication number
- CN201298161Y CN201298161Y CNU2008200097100U CN200820009710U CN201298161Y CN 201298161 Y CN201298161 Y CN 201298161Y CN U2008200097100 U CNU2008200097100 U CN U2008200097100U CN 200820009710 U CN200820009710 U CN 200820009710U CN 201298161 Y CN201298161 Y CN 201298161Y
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- CN
- China
- Prior art keywords
- electric tool
- handle
- safety control
- user
- gauge tap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a safety control device of an electric tool; the electric tool comprises a shell, a handle that is arranged on the shell, a cutting tool and a power-supply switch; the safety control device comprises a pressure sensor that is arranged on the handle, a microprocessor and a control switch, wherein, the control switch is serially connected with the power-supply switch. When users use the electric tool, the pressure sensor can detect the holding force which is applied to the handle by the user and can output a detection signal to the microprocessor, and then the microprocessor can judge whether the user pays attention to the operation by comparing the detection signal with a threshold valve and simultaneously outputs a control signal to the control switch, and the control switch performs the disconnection or connection according to the control signal. By detecting the attention of the user to the operation, the safety control device of the electric tool can effectively reduce the potential danger, thereby greatly improving the operation safety of the electric tool.
Description
Technical field
The utility model relates to a kind of safety control of electric tool, or rather, relates to a kind of safety control that electric tool starts and stops of controlling.
Background technology
Particularly there is the electric tool of potential danger greatly in a lot of in the market electric tools, such as chain saw, electric circular saw, reciprocating saw etc., second handle or secondary handle can be installed all basically, and bimanualness can improve the processing safety of electric tool.Simultaneously, there are some researches show that the people is when these electric tools of operation, if absent minded, hand can reduce the curable grip of handle.In this case, can cause potential danger to the user.
Summary of the invention
The purpose of this utility model just provides the safety control on a kind of electric tool, prevents danger that may cause owing to user's carelessness and the security that improves electric tool.
The utility model provides a kind of safety control of electric tool, this electric tool comprises a casing, is installed in handle, a cutting instrument and a power switch on the casing, this safety control comprises the pressure transducer, a microprocessor and the gauge tap that place on the described handle, this gauge tap and power switch polyphone.When the user uses electric tool, this pressure transducer can be surveyed the curable grip of user to handle, and export a detectable signal to microprocessor, microprocessor can judge whether this user has enough attention rates to operation by the magnitude relationship of a more described detectable signal and a threshold value, and export a control signal simultaneously to gauge tap, this gauge tap disconnects according to described control signal or is closed.This pressure transducer can be located on the main handle of electric tool or on the secondary handle, perhaps is located at simultaneously on main handle 1 and the secondary handle 2.It also can be a plurality of that the quantity of pressure transducer can be one.In addition, when line between sensor and the microprocessor is inconvenient, can adopt wireless mode to come transmission signals.
Thereby the safety control of electric tool of the present utility model can detect the user by pressure transducer has reduced potential risks effectively to the attention rate of operating, and has improved the processing safety of electric tool greatly.
Description of drawings
Fig. 1 is the synoptic diagram of electric circular saw of the present utility model;
Fig. 2 is the connection diagram of the safety control of electric circular saw of the present utility model, and this moment, the secondary handle of electric circular saw was provided with a pressure transducer;
Fig. 3 is the connection diagram of the safety control of electric circular saw of the present utility model, and this moment, the secondary handle of electric circular saw was provided with a plurality of pressure transducers.
Embodiment
The utility model is that example comes the safety control of electric tool is described with the electric circular saw.
As shown in Figure 1, electric circular saw 100 of the present utility model comprises a main handle 1 and a secondary handle 2, on main handle 1 power main switch K is installed, and simultaneously, is provided with the pressure sensing region S on secondary handle 2, is provided with a pressure transducer on this pressure sensing region S.This pressure transducer is used for the curable grip of exploration operation person to secondary handle 2.
As shown in Figure 2, the safety control of electric circular saw of the present utility model comprises a microprocessor MCU.The switching of the contact of a relay K A is controlled in the output of this microprocessor MCU, and normally opened contact and the main switch KA of this relay K A are connected on the power supply.When the user uses this electric circular saw 100, at first need by come energized main switch K by trigger action, after main switch K connected, this microprocessor MCU can receive from signal of sensor.This microprocessor MCU can compare this output signal and a threshold value, and this threshold value and user are relevant at the normal normal curable grip that is applied on to secondary handle 2 when using electric circular saw.If this signal is greater than threshold value, microprocessor MCU can think that the operator has enough attention rates to its operation, so be defeated by Continuity signal of relay K A.The normally opened contact of this relay K A takes place closed under the effect of this Continuity signal, and the motor M of electric circular saw 100 is connected, and can carry out cutting operation this moment.If the signal of sensor is less than this threshold value, microprocessor MCU can judge that then this operator's is absent minded so, so be defeated by shutdown signal of relay K A, the normally opened contact of this relay still keeps often opening under the effect of this shutdown signal, the motor M of electric circular saw 100 can not be connected, and can't carry out cutting operation this moment.
Certainly, as shown in Figure 3, on the pressure sensing region S, also a plurality of pressure transducers can be set, like this, microprocessor MCU then needs to judge respectively the output signal of each pressure transducer, when having only signal when all sensors greater than threshold value, electric circular saw 100 could begin to carry out cutting operation.
Certainly, when line between sensor and the little processing MCU is inconvenient, can adopt wireless mode to come transmission signals.
Certainly, described sensor also can be located on the main handle 1, perhaps is located at simultaneously on main handle 1 and the secondary handle 2.Described relay also can substitute with other switches, as long as this switch can respond the output signal of this microprocessor MCU.
The concrete scheme that the utility model is not limited to above to reach accompanying drawing and is disclosed, the mode that can also have other to be equal to.Need to prove that above embodiment is nonrestrictive.Except this embodiment, the conversion that all those skilled in the art carry out according to general knowledge all drops in the protection domain of the present utility model.
Claims (6)
1. the safety control of an electric tool, described electric tool comprises a casing, be installed in the handle on the casing, an one cutting instrument and a power switch, it is characterized in that, described safety control comprises one and places on the described handle, survey the user to described handle curable grip and export the pressure transducer of a detectable signal, one receives described detectable signal, and judge that by a more described detectable signal and a threshold size microprocessor and whether the user has enough attention rates to operation and export a control signal simultaneously receives described control signal and disconnects or closed gauge tap described gauge tap and described power switch polyphone according to described control signal.
2. the safety control of electric tool according to claim 1 is characterized in that, described handle is the main handle or the secondary handle of described electric tool.
3. the safety control of electric tool according to claim 1 is characterized in that, described gauge tap is one to comprise the relay of normally opened contact.
4. the safety control of an electric tool, described electric tool comprises a casing, be installed in the handle on the casing, an one cutting instrument and a power switch, it is characterized in that, described safety control comprises a plurality of placing on the described handle, survey the user to described handle curable grip and export the pressure transducer of a plurality of detectable signals, one receives described a plurality of detectable signals, and judge that by more described a plurality of detectable signals and a threshold size microprocessor and whether the user has enough attention rates to operation and export a control signal simultaneously receives described control signal and disconnects or closed gauge tap described gauge tap and described power switch polyphone according to described control signal.
5. the safety control of electric tool according to claim 4 is characterized in that, described handle is the main handle or the secondary handle of described electric tool.
6. the safety control of electric tool according to claim 4 is characterized in that, described gauge tap is one to comprise the relay of normally opened contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200097100U CN201298161Y (en) | 2008-03-07 | 2008-05-13 | Safety control device of an electric tool |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820032844.4 | 2008-03-07 | ||
| CN200820032844 | 2008-03-07 | ||
| CNU2008200097100U CN201298161Y (en) | 2008-03-07 | 2008-05-13 | Safety control device of an electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201298161Y true CN201298161Y (en) | 2009-08-26 |
Family
ID=41044144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200097100U Expired - Fee Related CN201298161Y (en) | 2008-03-07 | 2008-05-13 | Safety control device of an electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201298161Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104942768A (en) * | 2014-03-31 | 2015-09-30 | 罗伯特·博世有限公司 | Hand-held power tool, and method for operation |
| CN105710272A (en) * | 2014-12-17 | 2016-06-29 | 罗伯特·博世有限公司 | Tool and method for treating a workpiece with a tool element of a tool |
| CN105762989A (en) * | 2016-04-05 | 2016-07-13 | 宁波动电器有限公司 | Electric tool |
| CN114274085A (en) * | 2021-12-31 | 2022-04-05 | 浙江皇冠电动工具制造有限公司 | Electric tool and safe starting method |
-
2008
- 2008-05-13 CN CNU2008200097100U patent/CN201298161Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104942768A (en) * | 2014-03-31 | 2015-09-30 | 罗伯特·博世有限公司 | Hand-held power tool, and method for operation |
| CN104942768B (en) * | 2014-03-31 | 2020-09-01 | 罗伯特·博世有限公司 | Hand-held power tool and method for operating same |
| US10850377B2 (en) | 2014-03-31 | 2020-12-01 | Robert Bosch Gmbh | Hand-held power tool, and method for operation |
| CN105710272A (en) * | 2014-12-17 | 2016-06-29 | 罗伯特·博世有限公司 | Tool and method for treating a workpiece with a tool element of a tool |
| CN105710272B (en) * | 2014-12-17 | 2019-08-27 | 罗伯特·博世有限公司 | Tool and the method for handling workpiece for the tool elements using tool |
| CN105762989A (en) * | 2016-04-05 | 2016-07-13 | 宁波动电器有限公司 | Electric tool |
| CN105762989B (en) * | 2016-04-05 | 2018-03-23 | 宁波动一电器有限公司 | Electric tool |
| CN114274085A (en) * | 2021-12-31 | 2022-04-05 | 浙江皇冠电动工具制造有限公司 | Electric tool and safe starting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090826 Termination date: 20130513 |