CN204117740U - A kind of band magnetizes the brushless drill gun of function - Google Patents
A kind of band magnetizes the brushless drill gun of function Download PDFInfo
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- CN204117740U CN204117740U CN201420612960.9U CN201420612960U CN204117740U CN 204117740 U CN204117740 U CN 204117740U CN 201420612960 U CN201420612960 U CN 201420612960U CN 204117740 U CN204117740 U CN 204117740U
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- magnetizes
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- function
- permanent magnet
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Abstract
The utility model discloses a kind of band to magnetize the brushless drill gun of function, comprise drill chuck, speed regulator, gear reduction box, motor, casing, positive and negative change over switch, control switch, driving governor, battery, motor adopts DC brushless motor, its rotor is made up of permanent magnet, permanent magnet is provided with excitation winding, excitation winding is provided with two for connecing the input of dry cell, its armature winding is coupled to AC power, for generation of rotating magnetic field, it is characterized in that: the excitation winding input of described brushless electric machine is provided with charge circuit, described charge circuit exports the electric current that magnetizes, magnetize for described permanent magnet.Such setting, when the permanent magnet of brushless electric machine is because of long-time use demagnetization, can be charged by charge circuit, make permanent magnet keep initial magnetic, thus extend brushless useful life.
Description
Technical field
The utility model relates to a kind of electric screwdriver, and more particularly, it relates to
oneplant the brushless drill gun being with the function that magnetizes.
Background technology
Electric screwdriver, is equipped with the mechanism of adjustment and torque limiting, for tightening and unscrew the electric tool of screw.This electric tool, is mainly used in assembly line.It is one of instrument of most of manufacturing enterprise indispensability.Be divided into and have carbon brush and non-carbonate two kinds, non-carbonate electric screwdriver because of adopt in brand-new import brushless motor, use procedure do not produce high temperature, carbon dust, performance more superior, be particularly suitable for long-time continuous and use; Internal gear assembly is that superior alloy steel is directly stamped to form, uses more lastingly, stablizes; Streamlined feel designed enclosures, use more comfortable; Up-to-date Power Management Design, breakthrough tradition volume are large, shortcoming that power consumption is large, use in more aobvious light and handy, convenient and be applicable to the operational environment of 100V-250V; Switch uses signal enabling, longer service life; Positive and negative switch designs has more hommization, simpler and easy; Power source wire is more soft, not frangibility, more outstanding on year-on-year basis in use procedure; Torque value, long-time use can keep precision accurately; Noiselessness, low noise, the advantage such as noiseless enter fast and occupy Chinese market.
At present, on market (application number be 200920219866 Chinese patent disclose a kind of Rechargeable electric drill free of carbon brush), comprise drill chuck, speed regulator, gear reduction box, motor, casing, positive and negative change over switch, control switch, driving governor, battery, motor adopts DC brushless motor, its rotor is provided with excitation winding, excitation winding is provided with two for connecing the input of dry cell, and its armature winding is coupled to AC power, for generation of rotating magnetic field.Battery charging can extend 4 times saturated rear service time, and Rechargeable electric drill free of carbon brush of the present utility model can be widely used in electric drill field of power tools.This non-carbonate electric drill motor internal adopts synchronous machine, synchronous machine power factor (PF) is high, operationally, the power factor of electrical network not only can be made to reduce, grid power factor can also be improved, this synchronous machine produces rotating magnetic field by stator winding, and rotor is made up of permanent magnet, because in machine operation be, the magnetic force of rotating magnetic field and rotor effect is enough large, move so can drive with the not stall of rotor synchronizing speed, but this motor requires very high to the magnetic stability of permanent magnet, once permanent magnet is because of rotating magnetic field long duration of action or demagnetize because of long term overloading, if continue to use, because magnetic force reduces, so synchronous electric motor rotor does not reach synchronous speed, so greatly have impact on the useful life of synchronous machine, thus cause the life-span of brushless electric drill to be affected.
Although market there is special permanent magnetic iron magnetizing apparatus, when user re-uses, often because dismounting inconvenience, and usually ignore and magnetize to the permanent magnet in synchronous machine.
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of band to magnetize the brushless drill gun of function.
For achieving the above object, the utility model provides following technical scheme: a kind of band magnetizes the brushless drill gun of function, comprise DC brushless motor, its rotor is made up of permanent magnet, and permanent magnet is provided with excitation winding, excitation winding is provided with two inputs, its armature winding is coupled to AC power, and for generation of rotating magnetic field, described input is coupled with charge circuit, described charge circuit exports the electric current that magnetizes, and magnetizes for described permanent magnet.
When the permanent magnet of brushless electric machine is because of long-time use demagnetization, can be charged by charge circuit, make permanent magnet keep initial magnetic, thus extend brushless useful life.
The utility model can be set to further: described charge circuit comprises voltage input-terminal, is coupled to external ac power source; Charging module, is coupled to external ac power source, for receiving alternating current, and exports rectified wave; Handover module, is coupled to charging module, receives rectified wave and stores its electricity, for controlling the switching of charge and discharge pattern.Such setting, when permanent magnet still has electricity, by handover module, circuit can be become charge mode, first by charging module, external ac power source can be carried out rectification, and electricity is stored in handover module, when needs charge to permanent magnet, just the electricity that handover module stores can be converted into the electricity that magnetizes that permanent magnet needs.
The utility model can be set to further: described charge circuit also comprises the first switches set, is coupled between voltage input-terminal and external ac power source.When not using charge circuit, the first switches set can be disconnected, playing the effect of a power saving.
The utility model can be set to further: described charge circuit also comprises second switch group, is coupled between discharge module and excitation winding.Can disconnect second switch group when starting, then can to access start-up circuit unaffected for excitation winding.
The utility model can be set to further: rectifying tube, and its anode is coupled to the first switches set.As preferably, carry out halfwave rectifier by rectifying tube to external ac power source, structure is simple.
The utility model can be set to further: described charging module also comprises the first resistance, and its one end is coupled to rectifying tube negative electrode; First light-emitting diode, its anode is coupled to one end that the first resistance does not connect rectifying tube, and its negative electrode is coupled to the first switches set.As preferably, when circuit is in charge mode, be stored in electric capacity by the electricity after rectification, when capacitor charging completes, the first light-emitting diode turns off not luminous, reminds user's charging complete.
The utility model can be set to further: described handover module comprises single-pole double-throw switch (SPDT), and an one moved end is coupled to rectifying tube negative electrode; Electric capacity, its one end is coupled to single-pole double-throw switch (SPDT) not moved end, and its other end couples voltage input-terminal.As preferably, can switch charge mode and discharge mode two kinds of operating states by single-pole double-throw switch (SPDT), structure is simple, is easy to operation and understands.
The utility model can be set to further: described charge circuit also comprises discharge module, comprises the second resistance, and its one end is coupled to single-pole double-throw switch (SPDT), and it does not connect the moved end of rectifying tube; Second light-emitting diode, its anode is coupled to one end of the non-order double-pole double throw switch of the second resistance, and its negative electrode is coupled to the first light-emitting diodes tube cathode.As preferably, when circuit is in discharge mode, the electricity stored in electric capacity is released, larger electric current is had to flow through in excitation winding, second LEDs ON simultaneously, prompting user is magnetized, and when the electricity in electric capacity has been released, the second light-emitting diode turns off and stops luminous prompting user to magnetize.
The utility model can also be set to further: described discharge module also comprises the 3rd resistance, and its one end is coupled to single-pole double-throw switch (SPDT), and it does not connect the moved end of rectifying tube; Second diode, its negative electrode is coupled to one end of the non-order double-pole double throw switch of the first resistance, and its anode is coupled to voltage input-terminal.As preferably, starting current is easily excessive upon handover, normally works in order to avoid big current affects other assemblies, when there being the big current of transient state to flow through, in the 3rd resistance, carries out earial drainage, plays the effect of a protection.
Compared with prior art, the utility model has the advantage of: provide one and to magnetize easily mode, can again permanent magnet demagnetization time magnetized to permanent magnet by charge circuit, need not dismantle motor, structure is simple, improves the useful life of motor.
Accompanying drawing explanation
Fig. 1 is charge circuit of the present utility model.
Reference numeral: 1, excitation winding; 2, charging module; 3, handover module; 4, discharge module.
Embodiment
With reference to Fig. 1, the utility model embodiment is described further.
oneplant the brushless drill gun being with the function that magnetizes, comprise drill chuck, speed regulator, gear reduction box, motor, casing, positive and negative change over switch, control switch, driving governor, battery, motor adopts DC brushless motor, its rotor is made up of permanent magnet, permanent magnet is provided with excitation winding, excitation winding is provided with two for connecing the input of dry cell, its armature winding is coupled to AC power, for generation of rotating magnetic field, the excitation winding input of described brushless electric machine is provided with charge circuit, described charge circuit exports the electric current that magnetizes, and magnetizes for described permanent magnet.Charge circuit comprises:
First switches set S1, is coupled between voltage input-terminal and external ac power source; Second switch group S3, is coupled between discharge module 3 and excitation winding.Described two switches set are all by button control, and button is arranged on brushless electric drill object surface.
Charging module 1: rectifying tube D1, its anode is coupled to the first switches set S1; First resistance R1, its one end is coupled to rectifying tube D1 negative electrode; First LED 1, its anode is coupled to one end that the first resistance R1 does not meet rectifying tube D1, and its negative electrode is coupled to the first switches set S1.Rectifying tube D1 model is preferably IN5408, and the first resistance R1 resistance is preferably 75 kilo-ohms.
Handover module 2: single-pole double-throw switch (SPDT) S2, an one moved end is coupled to rectifying tube D1 negative electrode; Electric capacity, its one end is coupled to single-pole double-throw switch (SPDT) S2 not moved end, and its other end is coupled to light-emitting diodes tube cathode.The electric capacity of electric capacity preferred 150uF, 450V.
Discharge module 3: the second resistance R2, its one end is coupled to single-pole double-throw switch (SPDT) S2, and it does not connect the moved end of rectifying tube D1; Second LED 2, its anode is coupled to one end of the second resistance R2 non-order double-pole double throw switch S2, and its negative electrode is coupled to the first LED 1 negative electrode; 3rd resistance R3, its one end is coupled to single-pole double-throw switch (SPDT) S2, and it does not connect the moved end of rectifying tube D1; Second diode D2, its negative electrode is coupled to one end of the first resistance R1 non-order double-pole double throw switch S2, and its anode is coupled to the second LED 2 negative electrode.Second resistance R2 resistance is preferably 50 kilo-ohms, and the 3rd resistance R3 resistance is preferably 50 Europe, and the second diode D2 model is preferably IN5408.
When needs magnetize, first switches set S1 and second switch group S3 can be closed, then single-pole double-throw switch (SPDT) S2 is pushed charging module place, charge, then the first lumination of light emitting diode LED1, during charging complete, because electric capacity C voltage equals external input voltage, first LED 1 turns off and extinguishes, user is reminded to complete charging, it is discharge mode 3 that user can stir single-pole double-throw switch (SPDT) S2 commutation circuit pattern again, the electricity so stored in electric capacity C is released, electric current is had to flow through in excitation winding, magnetize to permanent magnet, in process, the second LED 2 conducting is luminous, after having magnetized, second LED 2 extinguishes, user can turn off second switch group S3.Complete the process that once magnetizes.
The above is only preferred implementation of the present utility model, protection range of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection range of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (9)
1.
oneplant the brushless drill gun being with the function that magnetizes, comprise DC brushless motor, its rotor is made up of permanent magnet, permanent magnet is provided with excitation winding, excitation winding is provided with the input of two, it is characterized in that: described input is coupled with charge circuit, described charge circuit exports the electric current that magnetizes, and magnetizes for described permanent magnet.
2. according to claim 1
oneplant the brushless drill gun being with the function that magnetizes, it is characterized in that: described charge circuit comprises
Voltage input-terminal, is coupled to external ac power source;
Charging module, is coupled to external ac power source, for receiving alternating current, and exports rectified wave;
Handover module, is coupled to charging module, receives rectified wave and stores its electricity, for controlling the switching of charge and discharge pattern.
3. according to claim 2
oneplant the brushless drill gun being with the function that magnetizes, it is characterized in that: described charge circuit comprises
First switches set, is coupled between voltage input-terminal and external ac power source.
4. according to claim 3
oneplant the brushless drill gun being with the function that magnetizes, it is characterized in that: described charge circuit comprises
Second switch group, is coupled between discharge module and excitation winding.
5. according to Claims 2 or 3 or 4
oneplant the brushless drill gun being with the function that magnetizes, it is characterized in that: described charging module comprises
Rectifying tube, its anode is coupled to external ac power source.
6. according to claim 5
oneplant the brushless drill gun being with the function that magnetizes, it is characterized in that: described charging module also comprises
First resistance, its one end is coupled to rectifying tube negative electrode;
First light-emitting diode, its anode is coupled to one end that the first resistance does not connect rectifying tube, and its negative electrode is coupled to the first switches set.
7. according to claim 5
oneplant the brushless drill gun being with the function that magnetizes, it is characterized in that: described handover module comprises
Single-pole double-throw switch (SPDT), an one moved end is coupled to rectifying tube negative electrode;
Electric capacity, its one end is coupled to single-pole double-throw switch (SPDT) not moved end, and its other end couples voltage input-terminal.
8. according to Claims 2 or 3 or 4
oneplant the brushless drill gun being with the function that magnetizes, it is characterized in that: described charge circuit also comprises
Discharge module, comprises the second resistance, and its one end is coupled to single-pole double-throw switch (SPDT), and it does not connect the moved end of rectifying tube; Second light-emitting diode, its anode is coupled to one end of the non-order double-pole double throw switch of the second resistance, and its negative electrode is coupled to the first light-emitting diodes tube cathode.
9. a kind of band according to claim 8 magnetizes the brushless drill gun of function, it is characterized in that: described discharge module also comprises
3rd resistance, its one end is coupled to single-pole double-throw switch (SPDT), and it does not connect the moved end of rectifying tube;
Second diode, its negative electrode is coupled to one end of the non-order double-pole double throw switch of the first resistance, and its anode is coupled to voltage input-terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420612960.9U CN204117740U (en) | 2014-10-21 | 2014-10-21 | A kind of band magnetizes the brushless drill gun of function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420612960.9U CN204117740U (en) | 2014-10-21 | 2014-10-21 | A kind of band magnetizes the brushless drill gun of function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204117740U true CN204117740U (en) | 2015-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420612960.9U Expired - Fee Related CN204117740U (en) | 2014-10-21 | 2014-10-21 | A kind of band magnetizes the brushless drill gun of function |
Country Status (1)
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| CN (1) | CN204117740U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105761879A (en) * | 2016-04-07 | 2016-07-13 | 武汉百络优物联科技有限公司 | Self-detection automatic window opener |
-
2014
- 2014-10-21 CN CN201420612960.9U patent/CN204117740U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105761879A (en) * | 2016-04-07 | 2016-07-13 | 武汉百络优物联科技有限公司 | Self-detection automatic window opener |
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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 |
Granted publication date: 20150121 Termination date: 20151021 |
|
| EXPY | Termination of patent right or utility model |