CN202678935U - Electric tool multifunctional protection controller - Google Patents
Electric tool multifunctional protection controller Download PDFInfo
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- CN202678935U CN202678935U CN 201220287606 CN201220287606U CN202678935U CN 202678935 U CN202678935 U CN 202678935U CN 201220287606 CN201220287606 CN 201220287606 CN 201220287606 U CN201220287606 U CN 201220287606U CN 202678935 U CN202678935 U CN 202678935U
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Abstract
The utility model discloses an electric tool multifunctional protection controller comprising a power switch (SA), a fuse (FU), a motor (M), a current transformer (L), a power circuit (1), a power off detection circuit (2), an over-current setting circuit (3), a single chip microcomputer control circuit (4), a voltage ramp trigger circuit (5), and a load driving circuit (6). The power circuit (1) can be used to supply the working power to the power off detection circuit (2), the over-current setting circuit (3), the single chip microcomputer control circuit (4) and the voltage ramp trigger circuit (5). The power off detection circuit (2) is connected with the over-current setting circuit (3) and the single chip microcomputer control circuit (4). The voltage ramp trigger circuit (5) is connected between the single chip microcomputer control circuit (4) and the a load driving circuit (6). The power switch (SA) and the power off detection circuit (2) are connected with each other, and the current transformer (L) is connected with the over-current setting circuit (3). By adopting the above mentioned structure, the electric tool multifunctional protection controller has advantages of simple, reasonable structure, convenient use, and comprehensive protection of the overvoltage, the overload, and the power off of the tool.
Description
Technical field
The utility model relates to a kind of safety guard of electric tool, particularly a kind of electric tool multifunctional protection controller with power-off protection, voltage limit protection, overcurrent protection, soft start function.
Background technology
Development along with Power Tools Industries; people are also more and more higher to the security performance of electric tool; for this reason; people have worked out the electronic controller of kinds of protect; for example with the speed regulator of rotational potentiometer formula; the slow soft starting device that rises of voltage; rated current overload protection arrangement etc.; these present protective device safety precautions are single; not reaching actual work must ask; for example during the electric tool operation; have a power failure suddenly; the plug loose contact; in the situations such as electric wire opens circuit; the workmen does not have the state of closing tool mains switch; directly go to overhaul power supply trouble or leave the job site; when again connecting, electric tool will directly start rotation, will damage object and the person on every side.In addition, electric tool when rotated, power supply circuits for a certain reason transient voltage raise, and can the rotor coil of electric tool be impacted, and reduce the useful life of rotor, when serious even puncture enamelled wire, cause and can not normally rotate.The workmen in the life-span that instrument also can reduce stator and rotor when being in for a long time above the rated power operation, seriously then can produce burning machine phenomenon when using the electric tool operation.During operation, electric tool inside is subjected to can cause the transmission line scaling loss, even may cause fire in the situation of certain reason overload or short circuit the workmen in the special occasions of circuit unprotect air switch.For the problems referred to above, many manufacturers and knowledgeable people develop specially and develop, but not yet have so far comparatively ideal product to emerge.
Summary of the invention
The defects that exists for overcoming existing electric tool safety protective device, the purpose of this utility model provide a kind of simple and reasonable, easy to install, can be to the electric tool multifunctional protection controller of electric tool general protection.
The utility model solves the problems of the technologies described above the technical scheme that adopts, it it comprise mains switch, fuse, motor, current transformer, power circuit, power failure detection circuit, the over-current adjusting circuit, single chip machine controlling circuit, the slow circuits for triggering that rise of voltage, load driving circuits, described power circuit is power failure detection circuit, the over-current adjusting circuit, single chip machine controlling circuit and voltage is slow to rise circuits for triggering provides working power, power failure detection circuit is connected with single chip machine controlling circuit with the over-current adjusting circuit, voltage is slow to be risen circuits for triggering and is connected between single chip machine controlling circuit and the load driving circuits, the output of mains switch is connected with power failure detection circuit, and current transformer is connected with the over-current adjusting circuit.
The output of described mains switch is connected with varistor.
Be connected with clock circuit on the described single chip machine controlling circuit.
After adopting said structure; compared with prior art have the following advantages: the one, because controller has power-off protection function; so tool switch is in open mode after the outage; energising can not work on yet again; need switch cuts out and open again just startup work, solved after the outage injury that again energising may bring object and the person.The 2nd, because therefore the limited voltage protection function of controling appliance when power supply circuits voltage raises suddenly, can play the pressure limiting effect, avoid the impact that rotor is caused.The 3rd because controller has excess current protective function, can guarantee that motor works under rated current, surpass during motor rotation setting current then motor stop, greatly having prolonged motor useful life.The 4th, because having voltage, controller delays the soft start function that rises, therefore can make electric tool rise to rated speed from zero rotating speed is slow, maintain at last this rated speed rotary work, avoided the harmful effect of immediate current of boot-strap to electrical equipment generation on every side.
Description of drawings
Fig. 1 is the utility model circuit theory schematic diagram.
1 power circuit wherein, 2 power failure detection circuits, 3 over-current adjusting circuit, 4 single chip machine controlling circuits, 5 voltages are slow to rise circuits for triggering, 6 load driving circuits, 7 clock circuits, SA mains switch, FU fuse, M motor, L current transformer.
Embodiment
Shown in Figure 1; specific embodiments for a kind of electric tool multifunctional protection controller of the utility model; it comprises mains switch SA; fuse FU; motor M; current transformer L; power circuit 1; power failure detection circuit 2; over-current adjusting circuit 3; single chip machine controlling circuit 4; the slow circuits for triggering 5 that rise of voltage; load driving circuits 6; fuse FU is connected on the main circuit of mains switch SA rear end; varistor VR is connected in parallel on the main circuit of fuse FU rear end; power circuit 1 and motor M are connected on the main circuit of varistor VR rear end; fuse FU plays overcurrent protection; varistor VR plays the overvoltage protection effect; described power circuit 1 is power failure detection circuit 2; over-current adjusting circuit 3; single chip machine controlling circuit 4 and voltage is slow to rise circuits for triggering 5 provides working power; power failure detection circuit 2 is connected with the over-current adjusting circuit and is connected with single chip machine controlling circuit 4; voltage is slow to be risen circuits for triggering 5 and is connected between single chip machine controlling circuit 4 and the load driving circuits 6; the output of mains switch SA is connected with power failure detection circuit 2, and current transformer L is connected with over-current adjusting circuit 3.Be connected with clock circuit 7 on the described single chip machine controlling circuit 4.
During the utility model plugged switch S A work, power supply provides working power through varistor VR for power circuit 1 and motor M, power failure detection circuit 2 work, electric tool is invalid at the electric current that startup immediate current instrument transformer L detects, over-current adjusting circuit 3 begins to detect after the time-delay several seconds, avoid surpassing the setting current misoperation, power failure detection circuit 2 and over-current adjusting circuit 3 will detect flows to single chip machine controlling circuit 4, the output signal of 4 pairs of power failure detection circuits 2 of single chip machine controlling circuit is judged, to the over-current adjusting circuit 3 output signals slow circuits for triggering 5 that rise of rear output control signal control voltage of comparing, drive load driving circuits 6 by the slow circuits for triggering 5 that rise of voltage again, thereby make electric tool rise to rated speed from zero rotating speed is slow, maintain at last this rated speed rotary work.
Claims (3)
1. electric tool multifunctional protection controller; it comprises mains switch (SA); fuse (FU); motor (M); current transformer (L); power circuit (1); power failure detection circuit (2); over-current adjusting circuit (3); single chip machine controlling circuit (4); the slow circuits for triggering (5) that rise of voltage; load driving circuits (6); it is characterized in that: described power circuit (1) is power failure detection circuit (2); over-current adjusting circuit (3); single chip machine controlling circuit (4) and voltage is slow to rise circuits for triggering (5) provides working power; power failure detection circuit (2) is connected 3 with the over-current adjusting circuit) be connected with single chip machine controlling circuit (4); voltage is slow to be risen circuits for triggering (5) and is connected between single chip machine controlling circuit (4) and the load driving circuits (6); the output of mains switch (SA) is connected with power failure detection circuit (2), and current transformer (L) is connected with over-current adjusting circuit (3).
2. electric tool multifunctional protection controller according to claim 1, it is characterized in that: the output of described mains switch (SA) is connected with varistor (VR).
3. electric tool multifunctional protection controller according to claim 1 and 2 is characterized in that: be connected with clock circuit (7) on the described single chip machine controlling circuit (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220287606 CN202678935U (en) | 2012-06-19 | 2012-06-19 | Electric tool multifunctional protection controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220287606 CN202678935U (en) | 2012-06-19 | 2012-06-19 | Electric tool multifunctional protection controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202678935U true CN202678935U (en) | 2013-01-16 |
Family
ID=47499810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220287606 Expired - Fee Related CN202678935U (en) | 2012-06-19 | 2012-06-19 | Electric tool multifunctional protection controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202678935U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106426011A (en) * | 2016-11-29 | 2017-02-22 | 南京九致信息科技有限公司 | Electric tool capable of delayed start |
-
2012
- 2012-06-19 CN CN 201220287606 patent/CN202678935U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106426011A (en) * | 2016-11-29 | 2017-02-22 | 南京九致信息科技有限公司 | Electric tool capable of delayed start |
| CN106426011B (en) * | 2016-11-29 | 2018-11-16 | 南京九致信息科技有限公司 | Can delayed startup electric 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: 20130116 Termination date: 20210619 |