CN102159005A

CN102159005A - Electric tool

Info

Publication number: CN102159005A
Application number: CN201010582376XA
Authority: CN
Inventors: 钟红风; 何明明
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2009-12-11
Filing date: 2010-12-10
Publication date: 2011-08-17

Abstract

The invention provides an electric tool, comprising a power component and a control unit, wherein the control unit comprises a touch sensing board and a processor; the touch sensing board is used for being triggered to output sensitive signals; and the processor is used for receiving the sensitive signals and controlling the electric tool to be in different working modes based on the sensitive signals or adjusting the output power of the power component. Compared with the prior art, in the technical scheme provided by the invention, the working mode of the electric tool or the output power of a power component of a steplessly-adjusted electric tool can be adjusted conveniently, thus meeting the requirements of users.

Description

Electric power tool

Technical Field

The present invention relates to an electric power tool having a power device.

Background

The electric power tool uses electric power as power, and the mechanical device is driven to work by the output power of the power device in the electric power tool or the electric power is converted into light energy by the power device, so that great convenience is brought to the working and life of people, and the electric power tool becomes a tool necessary for every family.

Early power tools were controlled using a mechanical switch that was operated by a user to turn the power tool on or off. However, since it does not have a power adjusting function, it cannot satisfy the user's needs for use under various environmental conditions. For example, when the electric tool drives the mechanical device to work, the power output by the electric tool may not meet the requirement of the driving mechanical device in some circumstances, and the power output by the electric tool may be too large in other circumstances. Also, for example, when the power tool is used for illumination, in some environments, the light emitted by the power tool may not meet the brightness requirement, and in other environments, the brightness of the power tool may be too bright.

Manufacturers have recognized the above problems and have developed power-adjustable power tools with two gears to meet the needs of some users, but the gears with adjustable power are limited and still cannot meet the needs of users working under various environmental conditions.

Disclosure of Invention

The invention provides an electric power tool convenient to adjust.

In order to achieve the purpose, the technical scheme of the invention is as follows: an electric power tool comprises a power device, the electric power tool further comprises a control unit, the control unit comprises a touch sensing board and a processor, when the touch sensing board is triggered, the touch sensing board outputs a sensing signal, and the processor is used for receiving the sensing signal and controlling the working mode of the electric power tool or controlling the output power of the power device according to the sensing signal.

Preferably, the touch panel includes an adjustment panel, the adjustment panel includes a first sensing piece and a second sensing piece that are close to the range, when triggering in proper order the first sensing piece and the second sensing piece, the processor controls the output power of power device increases.

Preferably, the control unit further includes a storage unit, when the processor controls the power device to be turned off, the storage unit stores the output power of the power device before turning off, and when the processor controls the power device to be turned on, the processor controls the output power of the power device to be equal to the output power before turning off.

Preferably, the touch sensing panel is a capacitive touch sensor.

Preferably, the electric power tool includes a housing, and the touch sensing panel is disposed inside the housing and in contact with an inner surface of the housing.

Preferably, the electric power tool includes a housing, the touch sensing panel is disposed inside the housing, and an electrically conductive medium is disposed between the touch sensing panel and an inner surface of the housing.

Preferably, the electrically conductive medium is an electrically conductive rubber.

Preferably, be provided with four response pieces on the tablet, be first response piece, second response piece, third response piece, fourth response piece respectively, work as first response piece is at first triggered, just the second response piece is triggered, perhaps the second response piece with the third response piece is triggered in proper order, perhaps the second response piece the third response piece with the fourth response piece is triggered in proper order, power device's output increases.

Preferably, the electric power tool is an electric power tool, and the power device is a motor.

Preferably, the electric power tool is a portable lighting device, and the power device is a light emitting unit.

Compared with the prior art, the electric power tool realizes stepless regulation of output power by arranging the induction plate and the processor. When the induction plate is triggered by a user, an induction signal is sent to the processor, and the processor controls the output power of the electric power tool according to the induction signal. Therefore, the electric power tool can be suitable for being used in various environments, and the requirements of different users are met. In addition, the electric power tool stores the output power of the electric power tool before the electric power tool is closed through the memory, so that when the electric power tool is opened again, the processor can control the power of the power device before the power device is output and closed, if the use environment is not changed, the adjustment is not needed again, and great convenience is brought to a user.

Drawings

The invention is further described with reference to the following figures and embodiments.

Fig. 1 is a perspective view of an electric power tool provided in a first embodiment of the present invention;

FIG. 2 is a cross-sectional view of the electric power tool of FIG. 1 taken along line E-E;

FIG. 3 is a schematic diagram of the connection of the processor within the power tool of FIG. 1 to the LEDs, the main switch, and the dimmer switch;

fig. 4 is a cross-sectional view of an electric power tool along a vertical axis direction according to a fourth embodiment of the present invention.

Wherein,

100. portable lighting device 33, third induction sheet 221, switch touch part

10. Shell 34, fourth sensing piece 222, switch sensing board

20. Main switch 35, dimming induction plate 230, dimming switch

21. Switch touch part 36, dimming touch part 235, dimming induction plate

22. Switch induction plate 40, battery 236, dimming touch part

30. Dimmer switch 300, portable lighting device 237, conductive rubber

31. First induction sheet 210. casing

32. Second induction sheet 220, main switch

Detailed Description

Fig. 1 is a schematic perspective view of an electric power tool according to a first embodiment of the present invention. The power tool is a portable lighting device 100, and the power device is a light bulb for converting electricity into light energy. The portable lighting device 100 includes a housing 10, a main switch 20 and a pair of dimmer switches 30 provided on the housing 10, and a battery 40 mounted on the housing 10.

The housing 10 has a cylindrical shape, and a light bulb for illumination, which may be a tungsten lamp, an incandescent lamp, or a Light Emitting Diode (LED), is mounted at one end thereof, and preferably, is a single LED.

Referring to fig. 1 and 2 together, fig. 2 is a cross-sectional view of the portable lighting device 100 of fig. 1 along a line E-E. The main switch 20 is disposed inside the housing 10 near the LED end, and is a capacitive touch switch, and includes a switch touch portion 21 and a switch induction plate 22, where the switch touch portion 21 and the housing 10 are integrated. The switch sensing plate 22 is a capacitive touch sensor and has a sensing piece contacting an inner surface of the switch touching part 21, and the main switch 20 can be triggered when a user touches an outer surface of the switch touching part 21.

In this structure, the switch touch part 21 and the housing 10 are integrated, so that dust can be effectively prevented from entering the housing through the gap of the switch, and further, the elements in the housing are prevented from being polluted.

The two light adjusting switches 30 have the same structure and are respectively located at two sides of the main switch 20, and a plane where a center point of the two light adjusting switches 30 and a center point of the main switch 20 are located is perpendicular to the axial direction of the housing 10. Each of the dimmer switches 30 has a forward direction (indicated by arrow F in fig. 1), and when the dimmer switch 30 is activated in the forward direction, the brightness of the LED increases; when the dimmer switch 30 is activated in a direction opposite to the forward direction, the brightness of the LED may become small.

The light control switch 30 is a capacitive touch switch, and includes a light control touch part 36 and a light control sensing plate 35, wherein the light control touch part 36 and the housing 10 are integrated.

The dimming sensing plate 35 is a capacitive touch sensor, and four sensing pieces, namely a first sensing piece 31, a second sensing piece 32, a third sensing piece 33 and a fourth sensing piece 34, are sequentially arranged on the surface of the dimming sensing plate along the forward direction. The four sensing pieces are respectively in contact with the inner surface of the dimming touch part 36, and when a user touches the outer surface of the dimming touch part 36, one or more of the four sensing pieces are triggered.

It is understood that the number of the sensing pieces of the dimming sensing board 35 is plural, and is not limited to four, such as two, three, five, ten, twenty, and so on.

In order to prevent a gap from being formed between the sensing piece of the main switch 10 and the switch touch part 36, an electrically conductive medium may be added therebetween, and preferably, the electrically conductive medium is conductive rubber. Similarly, an electrically conductive medium, such as conductive rubber, is added between the sensing piece and the dimming touch part of the dimming switch 30.

A processor is disposed in the housing 10 and is in electrical communication with the LEDs, the main switch 20, and the dimmer switch 30, please refer to fig. 3, which is a schematic diagram of the connection between the processor and the LEDs, the main switch 20, and the dimmer switch 30. The processor includes a controller and a memory. The controller can receive the sensing signals of the main switch 20 and the dimming switch 30 and control the LEDs. The memory is used for storing the brightness information. In this embodiment, the processor is a chip of PIC16F series manufactured by Microchip, preferably PIC16F616, PIC16F1823, PIC16F1827 and PIC16F 722.

When the LED is in the off state, the main switch 10 is triggered to send out an induction signal, and the controller receives the induction signal, controls the LED to emit light, and makes the luminance brightness of the LED be the same as the luminance value stored in the memory. At this time, the user triggers the main switch 10 again, the controller controls the LED to flash after receiving the sensing signal, and the portable lighting device 100 enters a flash operation mode so that it can be used as a signal lamp or an alarm lamp. At this time, the user triggers the main switch 10 again, and after receiving the sensing signal, the controller controls the memory to store the current brightness value of the LED, and turns off the portable lighting device 100, so that the LED stops emitting light. The brightness value before the LED is turned off is stored in the memory, so that when the portable lighting device 100 is turned on again, the brightness of the illumination is automatically the same as that when the portable lighting device is turned off last time, and if the working environment is not changed, the user does not need to adjust the brightness of the illumination of the LED again, thereby bringing convenience to the user.

When the LED is in a light emitting state, the user can adjust the brightness of the LED by triggering the light adjusting switch 30. When a user triggers the dimming switch 30 in the forward direction, in order to increase the brightness of the LED, at this time, the first sensing piece 31 is used as an initial key for increasing the brightness of the LED, only the first sensing piece 31 is triggered, the controller does not control the brightness of the LED to increase, and only when the user sequentially triggers the first sensing piece 31 and the second sensing piece 32, or sequentially triggers the first sensing piece 31, the second sensing piece 32 and the third sensing piece 33, or sequentially triggers the first sensing piece 31, the second sensing piece 32, the third sensing piece 33 and the fourth sensing piece 34, the controller controls the brightness of the LED to increase.

When the user triggers the dimmer switch 30 in the reverse direction of the forward direction, the brightness of the LED is reduced. At this time, the fourth sensing piece 34 is used as an initial key for reducing the brightness of the LED, only the fourth sensing piece 34 is triggered, the controller does not control the brightness reduction of the LED, and only when the user sequentially triggers the fourth sensing piece 34 and the third sensing piece 33, or sequentially triggers the fourth sensing piece 34, the third sensing piece 33 and the second sensing piece 32, or sequentially triggers the fourth sensing piece 34, the third sensing piece 33, the second sensing piece 32 and the first sensing piece 31, the controller controls the brightness reduction of the LED. The operation of increasing or decreasing the brightness of the LED is set in such a way, so that misoperation can be effectively prevented.

The processor can receive the sensing signals generated by the four sensing slices respectively, and define a time length as an operation time length, such as 1 second, 2 seconds, 3 seconds, and so on, which is described as 2 seconds in this embodiment. That is, when the user triggers the first sensing piece 31, timing is started, and when the time does not reach 2 seconds, the sensing piece which is triggered last after the user finishes operating is the second sensing piece 32, the controller controls the LED to be the brightness corresponding to the last triggering state of the user; when the operation of the user is finished right after 2 seconds, the controller controls the LED to be the brightness corresponding to the final trigger state of the user; when the operation of the user is not completed when the time reaches 2 seconds, the controller controls the brightness of the LED to be the brightness corresponding to the triggered state when the brightness of the LED is cut off for 2 seconds.

It is understood that, in an ideal state, the time period of the trigger operation to which the dimmer switch 30 can respond is greater than 0 second, which cannot be realized in practical technology, and therefore, it is preferable that the time period of one operation should be 0.5 to 2 seconds.

After receiving the sensing signal sent by the dimming switch 30, the processor controls the brightness of the LED according to the sensing signal.

First, the case where the user operates the light control switch 30 to increase the LED brightness will be described. And if the maximum brightness which can be reached by the LED is Q, dividing the maximum brightness Q into a plurality of brightness sections according to the number of the set induction sheets. In this embodiment, there are four sensing tabs in total, the first sensing tab 31 is used as a start key, and if brightness adjustment is not performed, the number of sensing tabs used for brightness adjustment is three, and the sensing tabs are the second sensing tab 32, the third sensing tab 33, and the fourth sensing tab 34, so that the maximum brightness Q can be divided into three segments, and each segment of brightness is used as a brightness range that can be adjusted when the second sensing tab 32, the third sensing tab 33, and the fourth sensing tab 34 are triggered. For example, assuming that the maximum brightness of the LED is 6000 lumens, the brightness range that can be adjusted by the second sensing piece 32 is 0-2000 lumens, the brightness range that can be adjusted by the third sensing piece 33 is 2001-4000 lumens, and the brightness range that can be adjusted by the fourth sensing piece 34 is 4001-6000 lumens, where the maximum value that can be adjusted by the second sensing piece is 2000 lumens.

It is understood that the brightness of the LED is not limited to 6000 lumens, the number of the corresponding sensing slices is not limited to four, and the brightness adjusting range corresponding to each sensing slice may not be divided equally as long as the technical spirit and the function of the LED are the same as or similar to the present invention, and all of them are within the protection scope of the present invention.

The processor can judge the capacitance increment generated by each sensing sheet according to the sensing signal, and the capacitance increment generated when each sensing sheet is completely triggered is a fixed value, so that the brightness of the LED can be adjusted according to the proportion of the capacitance increment generated when a user triggers the sensing sheet within a specified time period to the capacitance increment generated when the sensing sheet is completely triggered. The complete triggering is that the areas of the outer surface of the dimming touch part 36 corresponding to the four sensing pieces are all covered by the fingers of the user.

In this embodiment, when the first sensor strip 31, the second sensor strip 32, the third sensor strip 33 and the fourth sensor strip 34 are respectively represented by Y1, Y2, Y3 and Y4, the capacitance increments generated when the first sensor strip 31, the second sensor strip 32, the third sensor strip 33 and the fourth sensor strip 34 are fully triggered are X1, X2, X3 and X4, the capacitance increments generated when the first sensor strip 31, the second sensor strip 32, the third sensor strip 33 and the fourth sensor strip 34 are currently operated are respectively Δ X1, Δ X2, Δ X3 and Δ X4, and the maximum values of brightness increase that can be adjusted by the second sensor strip 32, the third sensor strip 33 and the fourth sensor strip 34 are respectively represented by Q2, Q3 and Q4, the brightness of the light control switch 30 can be adjusted according to the brightness of the LED in one effective operation.

Watch 1

It is understood that, in the process of adjusting the brightness increase of the LED, when the capacitance increment is calculated, the increment generated by the first sensing piece 31 may be removed, and only the capacitance increments generated by the second sensing piece 32, the third sensing piece 33 and the fourth sensing piece 34 are considered.

It will be appreciated that in an efficient operation, the sense plates that were triggered before the last sense plate triggered can all be calculated according to the capacitance increment generated by the full trigger, while the sense plate that was last triggered by the user is calculated according to the capacitance increment generated by the current operation. The first, second, third and

fourth sensing tabs

31, 32, 33 and 34 are respectively represented by Y1, Y2, Y3 and Y4, the increment of capacitance generated when the sensing tab is fully triggered is X1, X2, X3 and X4, the increment of capacitance generated when the last sensing tab triggered in the current operation is Δ X, and the maximum values of brightness increase that can be adjusted by the second, third and

fourth sensing tabs

32, 33 and 34 are respectively Q2, Q3 and Q4, so that the triggering condition of the dimmer switch 30 can be shown in the following table two according to the brightness of the LED.

Watch two

It can be understood that in an effective operation, the capacitance increment generated by the last triggered sensing piece is used as a numerator, and the capacitance increment generated by the sensing piece when the sensing piece is completely triggered is used as a denominator to form a proportional equation, so as to calculate the corresponding brightness. The first, second, third and

fourth sensing tabs

32, 33 and 34 are respectively Q2, Q3 and Q4, so that the triggering condition of the dimmer switch 30 can be shown in table three below according to the brightness of the LED.

Watch III

After the user triggers the sensing piece of the light adjusting switch 30 along the forward direction, if the corresponding brightness is smaller than the current brightness of the LED, the brightness of the LED is not changed.

Here, the reduction of the LED brightness by the user operating the light control switch 30 will be described. And if the maximum brightness which can be reached by the LED is Q, dividing the maximum brightness Q into a plurality of brightness sections according to the number of the set induction sheets. In this embodiment, there are four sensing tabs in total, the fourth sensing tab 34 is used as a start key, and if the brightness reduction adjustment is not performed, the number of the sensing tabs used for brightness reduction adjustment is three, and the three sensing tabs are the third sensing tab 33, the second sensing tab 32, and the first sensing tab 31, so that the maximum brightness Q can be divided into three segments, and each segment of brightness is used as a brightness range that can be adjusted when the third sensing tab 33, the second sensing tab 32, and the first sensing tab 31 are triggered. For example, assuming that the maximum brightness of the LED is 6000 lumens, the brightness range that can be adjusted by the third sensing strip 33 is 6000-4001 lumens, the brightness range that can be adjusted by the second sensing strip 32 is 4000-2001 lumens, and the brightness range that can be adjusted by the first sensing strip 31 is 2000-0 lumens, at this time, the maximum value that can be adjusted by the first sensing strip is 2000 lumens.

In this embodiment, when the first sensor strip 31, the second sensor strip 32, the third sensor strip 33 and the fourth sensor strip 34 are respectively represented by Y1, Y2, Y3 and Y4, the capacitance increments generated when the first sensor strip 31, the second sensor strip 32, the third sensor strip 33 and the fourth sensor strip 34 are fully triggered are respectively Z1, Z2, Z3 and Z4, the capacitance increments generated when the first sensor strip 31, the second sensor strip 32, the third sensor strip 33 and the fourth sensor strip 34 are respectively represented by Δ Z1, Δ Z2, Δ Z3 and Δ Z4 in the current operation, and the maximum values at which the brightness reduction can be adjusted by the third sensor strip 33, the second sensor strip 32 and the first sensor strip 31 are respectively represented by W3, W2 and W1, the brightness of the light control switch 30 can be adjusted according to the brightness of the LED in one effective operation as shown in table four below.

Watch four

It is understood that, in the process of adjusting the brightness reduction of the LED, when the capacitance increment is calculated, the capacitance increment generated by the fourth sensing piece 34 may be removed, and only the capacitance increments generated by the third sensing piece 33, the second sensing piece 32 and the first sensing piece 31 are considered.

fourth sensing tabs

31, 32, 33 and 34 are respectively represented by Y1, Y2, Y3 and Y4, the increment of capacitance generated when the sensing tab is fully triggered is Z1, Z2, Z3 and Z4, the increment of capacitance generated when the last sensing tab triggered in the current operation is Δ Z, and the maximum values of brightness reduction of the third, second and

first sensing tabs

33, 32 and 31 are respectively W3, W2 and W1, so that the triggering condition of the dimmer switch 30 can be shown in the following table five according to the brightness of the LED.

Watch five

It can be understood that in an effective operation, the capacitance increment generated by the last triggered sensing chip is used as a numerator, and the capacitance increment generated by the sensing chip when the sensing chip is completely triggered is used as a denominator to form a proportional equation, so as to calculate the corresponding brightness value. The first, second, third and

fourth sensing tabs

31, 32, 33 and 34 are respectively represented by Y1, Y2, Y3 and Y4, the increment of capacitance generated when the sensing tab is fully triggered is Z1, Z2, Z3 and Z4, the increment of capacitance generated when the last sensing tab triggered in the current operation is Δ Z, and the maximum values at which the third, second and

first sensing tabs

33, 32 and 31 can adjust the brightness reduction are W3, W2 and W1, respectively, so that the brightness of the LED can be controlled according to the triggering condition of the dimmer switch 30 as shown in table six below.

Watch six

When the user triggers the sensing piece of the light adjusting switch 30 along the reverse direction of the forward direction, if the corresponding brightness is greater than the current brightness of the LED, the brightness of the LED is not changed.

It is understood that if the number of the sensing tabs is two, three or five, and the structure, function and control logic are the same as those when four sensing tabs are provided, for example, if two sensing tabs are provided, assuming that only the first sensing tab 31 and the second sensing tab 32 in this embodiment are provided, the first sensing tab 31 and the second sensing tab 32 are sequentially activated, the processor controls the brightness of the LED to increase, and when the second sensing tab 32 and the first sensing tab 31 are sequentially activated, the processor controls the brightness of the LED to decrease.

The portable lighting device 100 provided in the first embodiment can realize stepless adjustment of the brightness thereof, and can meet the requirements of users in various environments.

The second embodiment of the present invention provides an electric power tool substantially the same as the portable lighting device 100 provided in the first embodiment, except that: when the user operates the dimmer switch 30 to adjust the brightness of the LED, the first sensing piece 31 is also used to increase the adjustment of the brightness of the LED.

In this embodiment, when the first sensor strip 31, the second sensor strip 32, the third sensor strip 33 and the fourth sensor strip 34 are respectively represented by Y1, Y2, Y3 and Y4, the capacitance increments generated when the first sensor strip 31, the second sensor strip 32, the third sensor strip 33 and the fourth sensor strip 34 are fully triggered are X1, X2, X3 and X4, the capacitance increments generated when the first sensor strip 31, the second sensor strip 32, the third sensor strip 33 and the fourth sensor strip 34 are currently operated are Δ X1, Δ X2, Δ X3 and Δ X4, respectively, and the maximum values of the brightness increases of the first sensor strip 31, the second sensor strip 32, the third sensor strip 33 and the fourth sensor strip 34 are Q1, Q2, Q3 and Q4, respectively, the following table shows the brightness of the light control switch 30 in one effective operation.

Watch seven

It will be appreciated that in an efficient operation, the sense plates that were triggered before the last sense plate triggered can all be calculated according to the capacitance increment generated by the full trigger, while the sense plate that was last triggered by the user is calculated according to the capacitance increment generated by the current operation. When the first sensor strip 31, the second sensor strip 32, the third sensor strip 33 and the fourth sensor strip 34 are respectively represented by Y1, Y2, Y3 and Y4, the increment of capacitance generated when the sensor strip is fully triggered is X1, X2, X3 and X4, the increment of capacitance generated when the last sensor strip triggered in the current operation is Δ X, and the maximum values of brightness increase that can be adjusted by the first sensor strip 31, the second sensor strip 32, the third sensor strip 33 and the fourth sensor strip 34 are Q1, Q2, Q3 and Q4, respectively, the triggering condition of the dimmer switch 30 can be shown as the following eight table according to the brightness of the LED.

Table eight

fourth sensing tabs

31, 32, 33 and 34 are respectively represented by Y1, Y2, Y3 and Y4, the increment of capacitance generated when the sensing tab is fully triggered is X1, X2, X3 and X4, the increment of capacitance generated when the sensing tab which is triggered last in the current operation is Δ X, and the maximum value of the brightness increase which can be adjusted by the first, second, third and

fourth sensing tabs

31, 32, 33 and 34 is Q1, Q2, Q3 and Q4, respectively, so that the triggering condition of the dimmer switch 30 corresponds to the brightness of the LED as shown in table nine below.

Watch nine

When the user operates the dimmer switch 30 to adjust the brightness of the LED, the fourth sensing piece 34 is also used to reduce the adjustment of the brightness of the LED.

In this embodiment, when the first sensor strip 31, the second sensor strip 32, the third sensor strip 33 and the fourth sensor strip 34 are respectively represented by Y1, Y2, Y3 and Y4, the capacitance increments generated when the first sensor strip 31, the second sensor strip 32, the third sensor strip 33 and the fourth sensor strip 34 are fully triggered are respectively Z1, Z2, Z3 and Z4, the capacitance increments generated when the first sensor strip 31, the second sensor strip 32, the third sensor strip 33 and the fourth sensor strip 34 are currently operated are respectively Δ Z1, Δ Z2, Δ Z3 and Δ Z4, and the maximum values of brightness reduction of the fourth sensor strip 34, the third sensor strip 33, the second sensor strip 32 and the first sensor strip 31 are respectively W4, W3, W2 and W1, the following table shows the brightness of the LED corresponding to the triggering condition of the dimming switch 30 in one effective operation.

Watch ten

fourth sensor tabs

31, 32, 33 and 34 are respectively represented by Y1, Y2, Y3 and Y4, the increment of capacitance generated when the sensor tab is fully triggered is Z1, Z2, Z3 and Z4, the increment of capacitance generated when the last sensor tab triggered in the current operation is Δ Z, and the maximum values of brightness reduction of the fourth sensor tab 34, the third sensor tab 33, the second sensor tab 32 and the first sensor tab 31 are W4, W3, W2 and W1, respectively, so that the triggering condition of the dimmer switch 30 can be shown in the following table eleven according to the brightness of the LED.

Watch eleven

It can be understood that in an effective operation, the capacitance increment generated by the last triggered sensing chip is used as a numerator, and the capacitance increment generated by the sensing chip when the sensing chip is completely triggered is used as a denominator to form a proportional equation, so as to calculate the corresponding brightness value. When the first sensor strip 31, the second sensor strip 32, the third sensor strip 33 and the fourth sensor strip 34 are respectively represented by Y1, Y2, Y3 and Y4, the increment of capacitance generated when the sensor strip is fully triggered is Z1, Z2, Z3 and Z4, the increment of capacitance generated when the last sensor strip triggered in the current operation is Δ Z, and the maximum values of brightness reduction of the fourth sensor strip 34, the third sensor strip 33, the second sensor strip 32 and the first sensor strip 31, which can be adjusted, are W4, W3, W2 and W1, respectively, the triggering condition of the dimmer switch 30 can be shown as the following table twelve.

Watch twelve

The electric power tool according to the third embodiment of the present invention has substantially the same functions and structures as the portable lighting device according to the first embodiment, and is different therefrom in that: when the user operates the light adjusting switch 30 to adjust the brightness of the LED, the brightness of the LED is adjusted according to the capacitance increment generated by the triggered sensing piece, which is in proportion to the capacitance increment generated when the sensing piece is completely triggered. If a plurality of sensing pieces are triggered in one operation, the capacitance increment generated by triggering each sensing piece accounts for the proportion of the capacitance increment generated by completely triggering the sensing piece, the capacitance increment is multiplied by the maximum value of the brightness which can be adjusted by the sensing piece, and the sum is the LED brightness value.

In this embodiment, when the first, second, third and

fourth sensing tabs

31, 32, 33 and 34 are respectively represented by Y1, Y2, Y3 and Y4, the increment of capacitance generated when the sensing tabs are fully triggered is S1, S2, S3 and S4, the increment of capacitance generated when the sensing tabs are currently operated is Δ S1, Δ S2, Δ S3 and Δ S4, and the maximum values of brightness of the sensing tabs are R1, R2, R3 and R4, respectively, the triggering of the light control switch 30 can be performed in one effective operation according to the brightness of the LED as shown in the thirteenth table.

Watch thirteen

It can be understood that the values of R1, R2, R3 and R4 may be the same or different.

It will be appreciated that each of the sensor strips may also be associated with a fixed intensity value, i.e. if the sensor strip is triggered, the processor controls the LED to the fixed intensity.

Referring to fig. 4, the power tool according to the fourth embodiment of the present invention has substantially the same function and structure as the portable lighting device according to the first embodiment, and includes a housing 210, a main switch 220 and a pair of dimming switches 230 disposed on the housing 210, and a battery mounted on the housing 210. The difference lies in that: the main switch 220 includes a switch touch part 221 and a switch sensing plate 222, the dimming switch 230 includes a dimming touch part 236 and a dimming sensing plate 235, and the switch sensing plate 222 and the dimming sensing plate 235 are disposed on the same pcb (printed circuit board). The PCB is disposed in a U-shape, and an electrically conductive medium, which is conductive rubber 237 in the present embodiment, is disposed between the sensing piece of the switch sensing plate 222 and the switch touching part 236, and between the dimming sensing plate 235 and the dimming touching part 236.

A fifth aspect of the present invention provides an electric power tool, which is an electric power tool in which a power device is a motor, and which may be a hand-held electric power tool such as a double-power drill, an electric hammer, an electric circular saw, an angle grinder, or a jig saw, a garden-type electric power tool such as a lawnmower or a lawnmower, or a table-type electric power tool such as a table saw or a miter saw. The details are described below by taking a double-power drill as an example.

The double-power drill comprises a shell, a working head, a motor contained in the shell, a transmission assembly for transmitting power output by the motor to the working head, and a torque force adjusting assembly for adjusting the working mode of the double-power drill. The torque force adjusting assembly can control the double-power drill to be in an electric drill function mode or a screwdriver function mode. The double-power drill further comprises a control unit, and the control unit is used for controlling the output power of the motor or controlling the double-power drill to be switched between an electric drill and a screwdriver working mode.

The control unit comprises a switch assembly and a processor, wherein the switch assembly comprises a main switch and a function switch. The main switch is a capacitance induction type touch switch and comprises a main switch touch part and a main switch induction plate, and the main switch touch part and the shell are of an integral structure; the main switch sensing plate is a capacitive touch sensor, a sensing sheet is arranged on the main switch sensing plate, the sensing sheet is in contact with the inner surface of the main switch touch part, and when a user touches the outer surface of the main switch touch part, the main switch can be triggered to output a sensing signal. The structure of the function switch is the same as that of the main switch, and the function switch comprises a function switch touch part and a function switch induction plate, wherein when a user touches the outer surface of the function switch touch part, the function switch can be triggered, so that an induction signal is output.

The processor is electrically connected with the motor, the torque force adjusting assembly, the switch assembly and the power supply of the double-power drill. The processor includes a controller and a memory. The processor can receive the induction signal of the switch assembly, when the motor is in a closed state and a user needs to turn on the electric power tool, the outer surface of the main switch touch part is touched, the main switch can be triggered to send out the induction signal, the processor receives the induction signal, the power supply of the motor is controlled to be switched on, and the motor rotates. At the moment, the user triggers the main switch again, the main switch sends out an induction signal, the processor receives the induction signal, the power supply of the motor is controlled to be cut off, and the double-power drill is turned off.

When a user performs different operations, the user often needs to use the double-power drill to realize different functions, for example, when holes are drilled on a wood board, the function of the electric drill is used; when the screw is screwed tightly, the screwdriver function is used. When the double-power drill is in an electric drill function mode, a user touches the outer surface of the touch part of the function switch, the function switch is triggered to output a sensing signal, the processor receives the sensing signal, controls an adjusting motor to drive the torque force adjusting assembly to move, and adjusts the double-power drill to work in a screwdriver function mode; when the duplex is bored work and is being in screwdriver functional mode, the user touches the surface of function switch touch portion, function switch is triggered, an induction signal of output, the treater is received induction signal controls above-mentioned adjustment motor drive torsion adjusting part motion, and the work of adjustment duplex is bored at electric drill functional mode.

The switch assembly may further include a pair of adjustment switches by which a user can adjust the output power of the motor when the motor is in an operating state. The regulating switch is a capacitive touch switch and comprises a regulating switch touch part and a regulating switch induction plate, the regulating switch induction plate is a capacitive touch sensor and is provided with an induction sheet, the induction sheet is in contact with the inner surface of the regulating switch touch part, when a user touches the outer surface of the regulating switch touch part, the regulating switch can be triggered to output an induction signal, the processor receives the induction signal and regulates the voltage of the motor in a PWM (pulse width modulation) mode, so that the output power of the motor is regulated. It will be readily apparent to those skilled in the art that there are other ways to adjust the output power of the motor, such as adjusting the potentiometer to divide the voltage by the processor, thereby adjusting the output power of the motor, and so on, which will not be described in detail herein.

The adjusting switch touch part and the shell are of an integral structure. The adjusting switch sensing plate is a capacitive touch sensor, four sensing pieces, namely a first sensing piece, a second sensing piece, a third sensing piece and a fourth sensing piece, are sequentially arranged on the surface of the adjusting switch sensing plate, and the adjusting switch is provided with a forward direction. The four sensing pieces are respectively contacted with the inner surface of the touch part of the adjusting switch, and when a user touches the outer surface of the touch part of the adjusting switch, one or more corresponding sensing pieces are triggered, so that a sensing signal is output.

When the user is followed forward direction triggers during the response piece, first response piece is as the increase motor output's initial key, only triggers first response piece, the controller can not control the output increase of motor, only triggers in proper order when the user first response piece with the second response piece, perhaps triggers in proper order first response piece second response piece with the third response piece, perhaps triggers in proper order first response piece second response piece third response piece with during the fourth response piece, the controller just can control the output increase of motor. When the user triggers the induction sheet along the reverse direction of the positive direction, the output power of the motor is reduced. At this moment, the fourth sensing piece is used as an initial key for reducing the operation of the output power of the motor, only the fourth sensing piece is triggered, the controller cannot control the reduction of the output power of the motor, and only when a user sequentially triggers the fourth sensing piece and the third sensing piece, or sequentially triggers the fourth sensing piece, the third sensing piece and the second sensing piece, or sequentially triggers the fourth sensing piece, the third sensing piece, the second sensing piece and the first sensing piece, the controller can control the reduction of the output power of the motor.

The memory is used for storing output power information of the motor, when a user closes the double-power drill, the memory can store the output power information of the motor when the user closes the double-power drill, and when the user opens the double-power drill again, the processor can control the output power of the motor to be equal to the information stored in the memory. The repeated adjustment of the user is avoided, so that the double-power drill is more convenient to use.

The electric power tool according to the sixth embodiment of the present invention has substantially the same function and structure as the double power drill according to the fifth embodiment, and differs therefrom in that: when a user needs to increase the output power of the motor, the induction sheet can be triggered along the forward direction, and the first induction sheet is also used for increasing the output power of the motor; when the user needs to reduce the output power of motor, can follow the reverse direction of positive direction triggers the response piece, the fourth response piece also is used for reducing the output power of motor.

The electric power tool according to the seventh embodiment of the present invention has substantially the same function and structure as the double power drill according to the fifth embodiment, and differs therefrom in that: when a user adjusts the output power of the motor, the output power of the motor is adjusted according to the proportion of the capacitance increment generated by the triggered induction sheet to the capacitance increment generated when the induction sheet is completely triggered.

The electric power tool according to the eighth embodiment of the present invention has substantially the same function and structure as the double power drill according to the fifth embodiment, and differs therefrom in that: the switch induction plate, the function induction plate and the regulation induction plate are arranged on the same Printed Circuit Board (Printed Circuit Board), the Printed Circuit Board (Printed Circuit Board) is arranged in a U shape, and an electric conductivity medium is arranged between the induction sheet of the induction plate and the touch part arranged on the shell. The electrically conductive medium may be an electrically conductive rubber.

Compared with the prior art, the electric power tool realizes the stepless regulation of the output power and the switching of the working mode of the electric power tool by arranging the induction plate and the processor. When the induction plate is triggered by a user, an induction signal is sent to the processor, and the processor controls the output power of the electric power tool according to the induction signal. Therefore, the electric power tool can be suitable for being used in various environments, and the requirements of different users are met. Moreover, the electric power tool stores the output power before the electric power tool is turned off by arranging the memory, so that when the electric power tool is turned on again, the processor can control the power device to output the power before the electric power tool is turned off, and if the use environment is not changed, the adjustment is not needed again; the processor can also control the electric power tool to be in different working modes according to the induction signal, so that the electric power tool is more convenient to adjust, and great convenience is brought to a user.

It will be appreciated by those skilled in the art that the invention can be implemented in other ways, provided that the technical spirit of the invention is the same as or similar to the invention, or that any changes and substitutions based on the invention are within the protection scope of the invention.

Claims

1. An electric power tool comprising a power device, characterized in that: the electric power tool further comprises a control unit, the control unit comprises a touch sensing board and a processor, the touch sensing board is used for being triggered to output a sensing signal, and the processor is used for receiving the sensing signal and controlling the electric power tool to be in different working modes or adjusting the output power of the power device according to the sensing signal.

2. The electric power tool according to claim 1, wherein: touch-sensitive board is including adjusting the tablet, adjust the tablet and including a first response piece and a second response piece that are close to the range, when triggering in proper order first response piece and the piece is responded to the second, processor control power device's output increases.

3. The electric power tool according to claim 2, wherein: the control unit further comprises a storage unit, when the processor controls the power device to be turned off, the storage unit stores the output power of the power device when the power device is turned off, and when the processor controls the power device to be turned on, the processor controls the output power of the power device to be equal to the output power before the power device is turned off.

4. The electric power tool according to claim 1, wherein: the touch sensing plate is a capacitive touch sensor.

5. The electric power tool of claim 4, wherein: the electric power tool includes a housing, and the touch sensing panel is disposed inside the housing and in contact with an inner surface of the housing.

6. The electric power tool of claim 4, wherein: the electric power tool includes a housing, the touch sensing panel is disposed inside the housing, and an electrically conductive medium is disposed between an inner surface of the housing.

7. The electric power tool of claim 6, wherein: the conductive medium is conductive rubber.

8. The electric power tool according to claim 1, wherein: be provided with four response pieces on the tablet, be first response piece, second response piece, third response piece, fourth response piece respectively, work as first response piece is at first triggered, just the second response piece is triggered, perhaps the second response piece with the third response piece is triggered in proper order, perhaps the second response piece the third response piece with the fourth response piece is triggered in proper order, power device's output increases.

9. The electric power tool according to any one of claims 1 to 8, wherein: the electric tool is an electric tool, and the power device is a motor.

10. The electric power tool according to any one of claims 1 to 8, wherein: the electric power tool is a portable lighting device, and the power device is a light-emitting unit.