CN206154086U - Electronic grinding machine with switching formula magnetic resistance motor - Google Patents
Electronic grinding machine with switching formula magnetic resistance motor Download PDFInfo
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- CN206154086U CN206154086U CN201621043394.XU CN201621043394U CN206154086U CN 206154086 U CN206154086 U CN 206154086U CN 201621043394 U CN201621043394 U CN 201621043394U CN 206154086 U CN206154086 U CN 206154086U
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- motor
- resistance motor
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- switching magneti
- switching
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Abstract
The utility model discloses an electronic grinding machine with switching formula magnetic resistance motor contains an organism, a drive assembly, a grinding miller and a dustproof subassembly, the organism has a first shell and a second shell, drive assembly has and locates the switching formula magnetic resistance motor of first shell, one locate the drive module of second shell, a connection the transmission shaft of switching formula magnetic resistance motor and one locate the assembling stand of transmission shaft, the assembling stand has a confession the equipment portion that the grinding miller was installed, dustproof subassembly has to be located the dust cover of first shell. Wherein, because electronic grinding machine be with switching formula magnetic resistance motor is as the drive source, so make electronic grinding function enough is applicable to and owes looks, frequently opens and stop and function situation such as positive opposition conversion.
Description
Technical field
The utility model is related to a kind of motor-driven mill, espespecially a kind of motor-driven mill with switching magneti-resistance motor.
Background technology
Press, motor-driven mill be it is a kind of with electric power as the polishing cordless power tool of driving source, make the technical staff can be by
The motor-driven mill to body surfaces such as metal or timber the action such as to be polished or grind.
As the M428013 Patent Cases of TaiWan, China patent announcement disclose a kind of motor-driven mill, its include a housing, one
Brushless motor, a circuit board, press button switch and a variable resistance.The housing has a first end and one second
End, the first end has a head, and second end has a grip portion, and the grip portion has one to prolong towards the first end
The pressure stretched is bright.The brushless motor is installed in the head.The circuit board is arranged in the grip portion and is electrically connected with
To the brushless motor, and the circuit board has a control panel for being formed at the grip portion surface.The press button switch
With a press button, a limit base and an elastic component, the press button is arranged at the grip portion, and the press button has one towards described
The linkage section that enclosure interior extends, the limit base is fixed on the circuit board, the elastic component be then installed in the press button with
Between the limit base.The variable resistance is installed on the circuit board, and described variable resistance one end is formed with one and connects
Together in the regulating rod of the linkage section.Further, when the motor-driven mill is when actually used, user can be by described
Press button interlocks the regulating rod, makes the variable resistance produce resistance variations with the evolution of the regulating rod, so as to
The different electrical power of the circuit board output are made to the brushless motor, and then reaches the function of control rotating speed.
If however, can be sent out from the point of view of construction by the technology contents and constituting for general motor-driven mill of above-mentioned Patent Case
It is existing, because the brushless motor is mostly DC Brushless Motor (Brushless DC Motor, BLDC motors), so that described
Motor-driven mill is relatively easy when using cannot to be operated because of loss phase (Lost of Phase), and the DC Brushless Motor
The cogging torque (Cogging Torque) being had also result in the motor-driven mill it is unfavorable suitable for frequent start-stop and
The operation conditions of positive and negative phase transformation.
Accordingly, can be understood by the above and be learnt, how to design one kind can be applied to loss phase, frequent start-stop and just
The motor-driven mill of the functioning conditions such as anti-phase conversion has obviously become a kind of problem to be solved.
Utility model content
Main purpose of the present utility model, is to provide a kind of motor-driven mill with switching magneti-resistance motor, is solved
Existing structure of implementing cannot be applied to the problem of the functioning conditions such as loss phase, frequent start-stop and positive and negative phase transformation.
It is that, up to above-mentioned purpose, the utility model provides a kind of motor-driven mill with switching magneti-resistance motor, and it is included
One body, a transmission component, an abrasive wheel and a dust preventing component.The body has a first shell and a second shell, institute
State first shell and be internally formed a chamber, the corresponding first shell of the second shell is arranged and the appearance with the chamber
Between being empty.The transmission component has one to be arranged at the switching magneti-resistance motor of the within the chamber, one located at the accommodation space
It is interior and be electrically connected with the switching magneti-resistance motor with the switching magneti-resistance motor is exported a control signal drive module,
The power transmission shaft of the one connection switching magneti-resistance motor and one the power transmission shaft is installed in away from the switching magneti-resistance motor
The assembling stand of one end, the assembling stand forms paragraph with an assembled portion for connecting the power transmission shaft and one with the assembled portion
Differ from and deviate the power transmission shaft axle center to arrange and obtain the diversion division of the cyclone that radiates with power transmission shaft turn generation one.The grinding
Wheel be installed in the assembled portion and with the power transmission shaft rotate, the dust preventing component comprising one loaded on the first shell and with it is described
Be formed between abrasive wheel a gap dust cover and a connection dust cover and the correspondence second shell setting and from one
Extractor fan receives a dust discharge conduit for attracting air-flow, the dust discharge conduit there is a correspondence accommodation space to open up and with institute
State the opening for attracting air-flow to radiate the drive module.
In an embodiment, the drive module is electric to the microcontroller and one that produce the control signal with one
Property is connected between the microcontroller and the switching magneti-resistance motor and transmits the control signal to the suitching type magnetic
The driver of resistance motor.
In an embodiment, the switching magneti-resistance motor is three-phase switching magneti-resistance motor, and the driver is three-phase
Half-bridge driver or three phase full bridge driver.
Further, the switching magneti-resistance motor has an external stator and an internal rotor, and the transmission component has many
It is individual to be arranged at the first shell and exported to the drive module with monitoring the internal rotor location status in the face of the internal rotor
The optoelectronic switch of one monitoring signals.
Wherein, the plurality of optoelectronic switch is spaced with the power transmission shaft as the center of circle and each other with a stepping angle.
Specifically, the drive module has a varied angle controlling mechanism and a voltage pulse width modulation controlling mechanism,
The drive module is determined with the varied angle control machine according to each described monitoring signals that the plurality of optoelectronic switch is transmitted
System or the voltage pulse width modulation controlling mechanism produce the control signal.
In an embodiment, the first shell has at least one connection chamber and makes extraneous gas to enter the chamber
The air admission hole of room.
Further, the transmission component has one to be arranged in the first shell with the pressurized triggering drive module
Elastic button and one it is articulated in the second shell and extends to elastic button top to interlock the compressing elastic button
Pressing plate.
By the above-mentioned embodiment of the utility model, have the characteristics that compared to prior art：
1. the motor-driven mill of the present utility model, as source is driven, makes institute by with the switching magneti-resistance motor
State motor-driven mill in running when can be suitably used for by the characteristic of the switching magneti-resistance motor loss phase frequent start-stop and
Positive and negative phase transformation etc. operation conditions.
2. the motor-driven mill of the present utility model can discharge the within the chamber when using by the diversion division
Heat energy and by it is described attraction air-flow the heat energy of the drive module and dust are taken out of in the lump, effectively cut to described whereby
The formula magnetic resistance motor of changing significantly is radiated.
The utility model is described in detail below in conjunction with the drawings and specific embodiments, but not as to the utility model
Restriction.
Description of the drawings
Fig. 1 is schematic perspective view of the present utility model.
Fig. 2 is decomposing schematic representation of the present utility model.
Fig. 3 is the decomposing schematic representation at another visual angle of the utility model.
Fig. 4 is side elevational cross-section schematic diagram of the present utility model.
Fig. 5 is the circuit diagram of the utility model drive module.
Fig. 6 is schematic top plan view of the present utility model.
Fig. 7 is top cross-sectional view of the present utility model.
Wherein, reference：
1 body
11 first shells
110 chambers
111 air admission holes
112 main casings
113 subshells
12 second shells
120 accommodation spaces
2 transmission components
21 switching magneti-resistance motors
211 external stators
212 internal rotors
213 first magnetic-conductance portions
214 second magnetic-conductance portions
215 magnetic conduction convex portions
22 drive modules
221 microcontrollers
222 drivers
23 power transmission shafts
24 assembling stands
241 assembled portions
242 diversion divisions
25 elastic buttons
26 pressing plates
27 optoelectronic switches
3 abrasive wheels
4 dust preventing components
41 dust covers
42 dust discharge conduits
420 openings
Specific embodiment
Technology contents of the present utility model, now just coordinate schema to be described as follows：
Fig. 1 and Fig. 2 is referred to, the utility model provides a kind of motor-driven mill with switching magneti-resistance motor, its bag
Containing a body 1, a transmission component 2, an abrasive wheel 3 and a dust preventing component 4.The body 1 has a first shell 11 and
Second shell 12, the first shell 11 is internally formed a chamber 110, and the second shell 12 has an accommodation space 120, described accommodating
Space 120 communicates with each other with the chamber 110.The transmission component 2 has the (Switched of a suitching type magnetic resistance motor 21
Reluctance Motor), a drive module 22, a power transmission shaft 23 and an assembling stand 24.Wherein, the switching magneti-resistance horse
It is arranged in the chamber 110 up to 21 and with an external stator 211 and an internal rotor 212, the external stator 211 and described
Internal rotor 212 is by electromagnetic steel sheet (example：Silicon steel sheet) composition is stacked, the drive module 22 is arranged at the accommodation space
In 120, and the switching magneti-resistance motor 21 is electrically connected to each other with the drive module 22.In an embodiment, described
The chamber 110 of one shell 11 is cylindrical so that the switching magneti-resistance motor 21 is arranged, and the first shell 11 has
At least one connection chamber 110 is rotated with into the chamber 110 for extraneous gas with the switching magneti-resistance motor 21
Air admission hole 111.Illustrate further, the first shell 11 is the pair that the main casing 112 is installed in by a main casing 112 and
Shell 113 is constituted, and the chamber 110 is formed inside the main casing 112, and the air admission hole 111 is then arranged at the subshell
113.In addition, the drive module 22 have a microcontroller 221 and one be electrically connected at the microcontroller 221 with it is described
Driver 222 between switching magneti-resistance motor 21, and the accommodation space 120 of the second shell 12 then be in strip with
Arrange for the circuit board (i.e. described drive module 22).Specifically, the switching magneti-resistance motor 21 is three-phase suitching type
Magnetic resistance motor (3-Phase Switched Reluctance Motor), the driver 222 is then described three tangent to drive
Change three-phase half-bridge driver (the 3-Phase Half Bridge of formula magnetic resistance motor (i.e. described switching magneti-resistance motor 21) start
) or three phase full bridge driver (3-Phase Full Bridge Driver) Driver.In an embodiment, the transmission component
2 have one to be arranged at the first shell 11 and can turn on the elasticity of the switching magneti-resistance motor 21 and the drive module 22 by
Button 25 and one is articulated in the second shell 12 and extends to the pressing plate 26 of the top of the elastic button 25, the elastic button 25
In the Shi Junhui that is not pressed towards a precalculated position elastic reset, the pressing plate 26 then can suffer oppression and interlock pressing it is described elasticity by
Button 25.On the other hand, the power transmission shaft 23 is to be connected to the switching magneti-resistance motor 21 and extend to outside the first shell 11
Portion, the assembling stand 24 is then the one end for being assembled in the power transmission shaft 23 away from the switching magneti-resistance motor 21.Become apparent from
Bright, the assembling stand 24 has an assembled portion 241 and a diversion division 242, and the assembled portion 241 connects and the power transmission shaft 23
And deviateing the axle center of the power transmission shaft 23, the diversion division 242 is then connected and towards deviateing the power transmission shaft with the assembled portion 241
The direction in 23 axle center extends.In an embodiment, the diversion division 242 is a flange (as shown in Figure 2), in other embodiments
In, the diversion division 242 is an at least fan blade.Finally, the abrasive wheel 3 is installed in the assembled portion 241, described dust-proof
Component 4 has a dust cover 41 and a dust discharge conduit 42, and the dust cover 41 is installed in the first shell 11 and grinds with described
A gap (as shown in Figure 4) is formed between emery wheel 3, the dust discharge conduit 42 is connected to the dust cover 41, and the dust discharge is led
Pipe 42 has an opening 420 (as shown in Figure 4) opened up corresponding to the accommodation space 120.
Referring again to Fig. 1 to 7, the motor-driven mill of the present utility model when actually used, the drive module 22
It is connected with a power equipment (not shown), so that the drive module 22 is obtained the electricity needed for running by the power equipment
Power.Then, user can press the elastic button 25 by the pressing plate 26, make the drive module 22 be conducted to described cutting
Formula magnetic resistance motor 21 is changed, accordingly, the microcontroller 221 can transmit a control signal to the driver 222, make the drive
Dynamic device 222 drives the internal rotor 212 of the switching magneti-resistance motor 21 to drive the power transmission shaft 23 to rotate, and the grinding
Wheel 3 then can be rotated by the power transmission shaft 23 and be ground operation to an object (not shown) surface.Wherein, by
In the motor-driven mill of the present utility model originated as driving with the switching magneti-resistance motor 21, therefore, the electricity
Dynamic grinder can be by the characteristic of the switching magneti-resistance motor 21 in the feelings of loss phase (Lost of Phase) when running
Be able to normal operation under condition, so be applicable to frequent start-stop and positive and negative phase transformation etc. operation conditions.
Hold, the utility model here illustrate further the switching magneti-resistance motor 21 and the drive module 22 it
Between start relation.Specifically, there is the drive module 22 a varied angle controlling mechanism (ASR) and a voltage pulse width to adjust
Become controlling mechanism (PWM), and the drive module 22 can adjust institute according to the speed of the switching magneti-resistance motor 21 height
State the export ratio between varied angle controlling mechanism and the voltage pulse width modulation controlling mechanism.If the switching magneti-resistance motor
21 speed is slower, and the export ratio of the varied angle controlling mechanism can increase therewith；If the switching magneti-resistance motor 21
Speed is faster, and the export ratio of the voltage pulse width modulation controlling mechanism then increases therewith.In an embodiment, as shown in fig. 7,
There is a direction of rotation in this pre-defined internal rotor 212 relatively described external stator 211 after being electrically activated, it is described outer fixed
Son 211 has multiple the first magnetic-conductance portions 213 extended towards the direction of the internal rotor 212, and the internal rotor 212 has multiple towards institute
State second magnetic-conductance portion 214 and multiple respectively by each second magnetic-conductance portion 214 towards the rotation of the direction of external stator 211 extension
Turn the magnetic conduction convex portion 215 that direction one extends.I.e. by the plurality of first magnetic-conductance portion 213 after 211 magnetic conduction of external stator
Attract wherein described in one second magnetic-conductance portion 214 respectively to make the internal rotor 212 rotate.Wherein, because the utility model has
The magnetic conduction convex portion 215 is designed, and makes each second magnetic-conductance portion 214 can be by the magnetic conduction convex portion 215 belonging to it
Shorten and the distance between first magnetic-conductance portion 213 described in secondary so that the switching magneti-resistance motor 21 can be the plurality of the
Two magnetic-conductance portions 214 are not rotated to can in advance trigger the first magnetic-conductance portion 213 described in time described in secondary one during the first magnetic-conductance portion 213 to inhale
Draw the plurality of second magnetic-conductance portion 214, consequently, it is possible to the switching magneti-resistance motor 21 can be by the plurality of first magnetic conduction
Start relation between portion 213 and the plurality of magnetic conduction convex portion 215 is accelerating the velocity of rotation of the internal rotor 212.
Specifically, in order that the drive module 22 can detect the velocity of rotation of the switching magneti-resistance motor 21,
In an embodiment, the transmission component 2 has multiple photoelectricity for being arranged at the first shell 11 and facing the internal rotor 212
Switch 27, the plurality of optoelectronic switch 27 can be described to judge by the position of the blocking light beam of the internal rotor 212 and frequency
The position of internal rotor 212 and speed, and then the position according to the internal rotor 212 and speed transmit a monitoring signals to the drive
Dynamic model block 22, makes the drive module 22 to determine the angle by the monitoring signals of each optoelectronic switch 27
The export ratio of degree controlling mechanism and the voltage pulse width modulation controlling mechanism.In an embodiment, the plurality of light is established by cable
Closing 27 is spaced with the power transmission shaft 23 as the center of circle and each other with a stepping angle (Step Angle), that is, Ren Ersuo
State and can be formed between optoelectronic switch 27 and the power transmission shaft 23 an angle (example：30 degree).Except by the plurality of photoelectricity
Switch 27 provides the monitoring signals with as outside the reference frame for judging the position of the internal rotor 212 and speed, in other
In embodiment, the microcontroller 221 also can detect the electric current of the switching magneti-resistance motor 21 by the driver 222
Size, and institute is cut off by the driver 222 when the current value of the switching magneti-resistance motor 21 exceedes load current value
State the input current of switching magneti-resistance motor 21 (i.e.：Overcurrent protection [Over Current Protection]), it is described to avoid
Switching magneti-resistance motor 21 produces the situation burnt because electric current is excessive.Furthermore, the microcontroller 221 also at any time according to institute
State the size of current of switching magneti-resistance motor 21 to adjust the input electricity of the switching magneti-resistance motor 21 of the driver 222 pairs
Stream, consequently, it is possible to work as the switching magneti-resistance motor 21 because the abrasive wheel 3 is obstructed (example：Press on a body surface) and have
During curent change, the microcontroller 221 can adjust the switching by the feedback (feedback) of the driver 222
The input current of formula magnetic resistance motor 21, so that the switching magneti-resistance motor 21 equal energy when the abrasive wheel 3 whether there is and is obstructed
Maintain certain rotating speed.
On the other hand, it is notable that in the motor-driven mill during grinding operation is performed, the water conservancy diversion
Portion 242 can be rotated to produce a radiating cyclone by the power transmission shaft 23, make the switching magneti-resistance motor 21 because of turn institute
The heat energy of generation is obtained and is expelled to outside the chamber 110 with the radiating cyclone.In addition, due to the motor-driven mill
The dust discharge conduit 42 can be connected to an extractor fan (not shown) when using, and the drive module 22 be relative to
The opening 420 is arranged, therefore, when the attraction air-flow produced by the extractor fan is when the dust discharge conduit 42 is flowed through,
The attraction air-flow can be in the lump by the drive module 22 because the used heat and dust produced by running be led in the lump by the dust discharge
Pipe 42 is taken out of.Accordingly, the motor-driven mill of the present utility model can be arranged in use by the diversion division 242
The heat energy that goes out in the chamber 110 and by the attraction air-flow by the heat energy of the drive module 22 and dust in the lump band
Go out, to make the motor-driven mill significantly can radiate to the switching magneti-resistance motor 21 and the drive module 22
Action.
In sum, the utility model discloses a kind of motor-driven mill with switching magneti-resistance motor, the electric grinding mortar
Grinding machine includes a body, a transmission component, an abrasive wheel and a dust preventing component, and the body has a first shell and one the
Two shells, the transmission component have one located at the first shell switching magneti-resistance motor, one located at the second shell driving
Module, the power transmission shaft of the connection switching magneti-resistance motor and one are located at the assembling stand of the power transmission shaft, the assembling seat tool
There is an assembled portion installed for the abrasive wheel, the dust preventing component has a dust cover for being located at the first shell.Wherein, by
In the motor-driven mill originated as driving with the switching magneti-resistance motor, so that the motor-driven mill can be fitted
For functioning conditions such as loss phase, frequent start-stop and positive and negative phase transformations.
Certainly, the utility model can also have other various embodiments, spiritual and its essence without departing substantially from the utility model
In the case of, those of ordinary skill in the art can make various corresponding changes and deformation, but these phases according to the utility model
The change and deformation answered should all belong to the utility model scope of the claims.
Claims (8)
1. a kind of motor-driven mill with switching magneti-resistance motor, it is characterised in that include：
One body, with a first shell and a second shell, the first shell is internally formed a chamber, the second shell correspondence institute
State first shell to arrange and the accommodation space with the chamber；
One transmission component, with one be arranged at the switching magneti-resistance motor of the within the chamber, one in the accommodation space and
It is electrically connected with the switching magneti-resistance motor to export the switching magneti-resistance motor drive module, a company of one control signal
The power transmission shaft and one for connecing the switching magneti-resistance motor is installed in the power transmission shaft away from described switching magneti-resistance motor one end
Assembling stand, the assembling stand has the assembled portion of a connection power transmission shaft and one to form paragraph with the assembled portion poor simultaneously
Deviate the power transmission shaft axle center to arrange and obtain the diversion division of the cyclone that radiates with power transmission shaft turn generation one；And
One abrasive wheel and a dust preventing component, the abrasive wheel is installed in the assembled portion and rotates with the power transmission shaft, described
Dust preventing component is formed with loaded on the first shell and between the abrasive wheel dust cover in a gap and one is connected comprising one
The dust cover simultaneously corresponds to the second shell setting and receives a dust discharge conduit for attracting air-flow, the dust discharge from an extractor fan
Conduit has the opening that the correspondence accommodation space is opened up and radiated to the drive module with the attraction air-flow.
2. there is as claimed in claim 1 the motor-driven mill of switching magneti-resistance motor, it is characterised in that the drive module tool
There is the microcontroller and to produce the control signal to be electrically connected at the microcontroller with the suitching type magnetic
The driver of the control signal to the switching magneti-resistance motor is transmitted between resistance motor.
3. there is as claimed in claim 2 the motor-driven mill of switching magneti-resistance motor, it is characterised in that the switching magneti-resistance
Motor is three-phase switching magneti-resistance motor, and the driver is three-phase half-bridge driver or three phase full bridge driver.
4. there is as claimed in claim 2 the motor-driven mill of switching magneti-resistance motor, it is characterised in that the switching magneti-resistance
Motor has an external stator and an internal rotor, and the transmission component has and multiple is arranged at the first shell and in the face of described interior turn
Son with monitor the internal rotor location status to the drive module export a monitoring signals optoelectronic switch.
5. there is as claimed in claim 4 the motor-driven mill of switching magneti-resistance motor, it is characterised in that the plurality of light is established by cable
Pass is spaced with the power transmission shaft as the center of circle and each other with a stepping angle.
6. there is the motor-driven mill of switching magneti-resistance motor as described in claim 4 or 5, it is characterised in that the driving mould
Block has a varied angle controlling mechanism and a voltage pulse width modulation controlling mechanism, and the drive module is according to the plurality of photoelectricity
The each described monitoring signals of switch transmission are determined with the varied angle controlling mechanism or the voltage pulse width modulation controlling mechanism
Produce the control signal.
7. there is the motor-driven mill of switching magneti-resistance motor as described in claim 1,2,3,4 or 5, it is characterised in that described
First shell has at least one connection chamber and makes extraneous gas to enter the air admission hole of the chamber.
8. there is as claimed in claim 7 the motor-driven mill of switching magneti-resistance motor, it is characterised in that the transmission component tool
Have one to be arranged in the first shell and the second shell is articulated in the elastic button of the pressurized triggering drive module and one
And the elastic button top is extended to interlock the pressing plate for oppressing the elastic button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621043394.XU CN206154086U (en) | 2016-09-08 | 2016-09-08 | Electronic grinding machine with switching formula magnetic resistance motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621043394.XU CN206154086U (en) | 2016-09-08 | 2016-09-08 | Electronic grinding machine with switching formula magnetic resistance motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206154086U true CN206154086U (en) | 2017-05-10 |
Family
ID=58651440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621043394.XU Active CN206154086U (en) | 2016-09-08 | 2016-09-08 | Electronic grinding machine with switching formula magnetic resistance motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206154086U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110116354A (en) * | 2018-02-06 | 2019-08-13 | 盖多·瓦伦蒂尼 | Hand-held and hand leads the operation element of power tool and the back mat form for it |
-
2016
- 2016-09-08 CN CN201621043394.XU patent/CN206154086U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110116354A (en) * | 2018-02-06 | 2019-08-13 | 盖多·瓦伦蒂尼 | Hand-held and hand leads the operation element of power tool and the back mat form for it |
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