Electric tool with lighting function

Abstract

The utility model provides an electric tool with a lighting function. The electric tool with the lighting function comprises an electric tool body, a lighting lamp body arranged on the electric tool body and a trigger sensor. Wherein the electric tool body comprises a control part and a working part, and the control part is electrically connected with the trigger sensor, the illuminating lamp body and the working part; the trigger sensor is configured to be capable of detecting the working state of the working part and sending the working state to the control part; and the control part is configured to control the lighting lamp body to be turned on or turned off according to the working state. The working state of the electric tool can be detected through the trigger sensor, then the lighting lamp body is automatically controlled to be turned on or turned off according to the state of the electric tool, and therefore on the premise that the lighting requirement of a user is met, electric energy can be saved as much as possible, and operation of the user is simplified as much as possible; for example, a user does not need to manually turn on or turn off illumination, so that the use experience of the user is improved.

Description

Technical Field

[0001] The utility model relates to the field of electric tools, in particular to an electric tool with a lighting function. Background Art

[0002] Power tools usually refer to tools that are operated by hand, use low-power motors or electromagnets as power, and drive the working head through a transmission mechanism, such as electric drills, cutters, electric grinders, electric screwdrivers, etc. Compared with manual tools, power tools greatly reduce labor intensity and improve work efficiency, and are widely used in construction and road, housing decoration, woodworking, metal processing, shipbuilding, aerospace, automobiles, gardening and other fields.

[0003] During use, power tools may be used in outdoor construction sites or other areas where lighting is not very good. Therefore, in these working scenarios, it is necessary to provide a lighting component that allows the power tool to illuminate the workpiece. When the workpiece is machined by the power tool or the power tool is used to process it, the lighting component is beneficial for enabling the user to fully see the workpiece or the processing area on the workpiece being processed by the power tool even under non-standard lighting conditions.

[0004] In the prior art, these lighting structures are usually placed in the following two ways: one is to place the lighting components independently in the processing area or another space, and the switch needs to be controlled manually, which is inconvenient when used; the other is to integrate the lighting components on the power tool, and when the power tool switch is turned on, the lighting components start to illuminate, and when the power tool switch is turned off, the lighting stops. However, when the power tool is powered on, especially the cordless power tool, there are a lot of non-working standby states. In this case, continuous lighting will lead to unnecessary power consumption and energy waste. Utility Model Content

[0005] In view of this, an object of the present invention is to provide an electric tool with a lighting function to improve the above-mentioned problem.

[0006] An embodiment of the utility model provides an electric tool with a lighting function, comprising: an electric tool body, a lighting lamp body arranged on the electric tool body, and a trigger sensor; wherein: the electric tool body comprises a control part and a working part, the control part is electrically connected to the trigger sensor, the lighting lamp body and the working part; the trigger sensor is configured to detect the working state of the working part and send it to the control part; the control part is configured to control the turning on or off of the lighting lamp body according to the working state.

[0007] Preferably, the working part generates vibration of a predetermined frequency when working, and the trigger sensor is a vibration sensor.

[0008] Preferably, the lighting lamp body is detachably arranged on the electric tool body.

[0009] Preferably, it also includes a switch button circuit, and the switch button circuit is connected to the control part through an RC circuit composed of a seventeenth resistor and a fifteenth capacitor.

[0010] Preferably, it also includes a fifth resistor, a fifteenth resistor, a nineteenth resistor and a sixteenth capacitor, and the electric tool body also includes a battery, and the battery is connected to the VDD pin of the control unit through the fifth resistor; the output end of the trigger sensor is connected to the trigger sensor through the nineteenth resistor, and is connected to the battery through the nineteenth resistor and the fifteenth resistor, and the sixteenth capacitor is connected in parallel at both ends of the fifteenth resistor.

[0011] Preferably, it also includes an ADC acquisition circuit and an indicator light circuit, the ADC pin of the control unit is also connected to the battery through the ADC acquisition circuit, and the indicator light circuit is electrically connected to the control unit and the battery.

[0012] Preferably, it further comprises a lamp body controller, wherein the lamp body controller is connected to the control unit via an enable pin; and the lighting lamp body is connected to the lamp body controller via a filter circuit composed of a capacitor and an inductor.

[0013] Preferably, the lighting lamp body is also connected to the lamp body controller through a first MOS tube, the drain of the first MOS tube is connected to the lighting lamp body and the lamp body controller, the source is connected to the lighting lamp body, and the gate is connected to the control unit.

[0014] Preferably, the lamp controller is also connected to the battery via a second MOS tube, wherein the drain of the second MOS tube is connected to the IN pin of the lamp controller, the source is connected to the battery, and the gate is connected to the control unit.

[0015] Preferably, it also includes a charging circuit and an input interface, and the input interface is connected to the battery through the charging circuit.

[0016] This embodiment can detect the working status of the power tool through a trigger sensor, and then automatically control the turning on or off of the lighting lamp according to the status of the power tool. This can save energy as much as possible and simplify the user's operation as much as possible while meeting the user's lighting needs. For example, the user does not need to manually turn on or off the lighting, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a circuit diagram of an electric tool with lighting function provided by an embodiment of the utility model.

[0019] Figure 2 It is a circuit diagram of a control unit provided in an embodiment of the utility model.

[0020] Figure 3 It is a circuit diagram of a trigger sensor provided in an embodiment of the utility model.

[0021] Figure 4 It is a circuit diagram of a key switch circuit provided by an embodiment of the utility model.

[0022] Figure 5 It is a circuit diagram of an ADC acquisition circuit provided in an embodiment of the utility model.

[0023] Figure 6 It is a circuit diagram of an indicator light circuit provided by an embodiment of the utility model.

[0024] Figure 7 It is a circuit diagram of a lamp body controller provided in an embodiment of the utility model.

[0025] Figure 8 It is a circuit diagram of a program burning port provided by an embodiment of the utility model.

[0026] Fig. 9 It is a circuit diagram of a charging circuit provided by an embodiment of the utility model.

[0027] Fig.10 It is a circuit diagram of the input interface provided by an embodiment of the utility model. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0029] See also Figure 1 An embodiment of the utility model provides an electric tool with a lighting function, comprising: an electric tool body, a lighting lamp body 20 arranged on the electric tool body, and a trigger sensor 30; wherein: the electric tool body comprises a control unit 11 and a working unit, and the control unit 11 is electrically connected to the trigger sensor 30, the lighting lamp body 20 and the working unit; the trigger sensor 30 is configured to detect the working state of the working unit and send it to the control unit 11; the control unit 11 is configured to control the lighting lamp body 20 to be turned on or off according to the working state.

[0030] In this embodiment, the lighting lamp body 20 is detachably arranged on the power tool body. Thus, in a work scenario where lighting is required, the lighting lamp body 20 can be installed on the power tool body to provide auxiliary lighting. In a work scenario where lighting is not required, the lighting lamp body 20 can be removed, thereby reducing the overall weight of the power tool and saving electricity.

[0031] In this embodiment, the electric tool can be an electrically operated wrench, screwdriver, electric drill, etc., which includes a control unit 11 and a working unit. The control unit is connected to the working unit through a transmission mechanism, so as to control the working unit to work, thereby realizing automatic drilling, screwing, screwing and other operations.

[0032] In this embodiment, if Figure 2 As shown, the core of the control unit is an MCU controller, and includes corresponding peripheral circuits, wherein the model of the MCU controller can be HT45SC216, and of course it can also be other types of chips, which is not specifically limited in the present invention.

[0033] In this embodiment, in particular, the working part generates a vibration of a predetermined frequency when working, which can drive the entire power tool body to generate corresponding vibrations. The trigger sensor 30 is a vibration sensor, and its circuit diagram is as shown in FIG. Figure 3 As shown, the vibration sensor can receive the mechanical quantity (such as vibration frequency or vibration intensity) generated by the power tool due to vibration, and convert it into an electrical quantity proportional to it, and send it to the control unit 11. Then, the control unit 11 determines the working state of the working part according to the electrical quantity, and then controls the opening or closing of the lighting body 20 according to the working state.

[0034] In this embodiment, if Figure 4 As shown, in particular, it also includes a switch button circuit 40, and the switch button circuit 40 is connected to the control unit 11 through an RC circuit composed of a seventeenth resistor R17 and a fifteenth capacitor R.

[0035] Among them, the RC circuit mainly plays a filtering role.

[0036] The working principle of the utility model is described in detail below:

[0037] In this embodiment, the control unit 11 collects the signal of the switch button circuit 40 to determine whether the power tool is turned on. When the control unit 11 detects that the power tool is in the turned-on state, the vibration sensor detects the vibration frequency of the power tool and determines whether the working part is in the working state through the vibration frequency.

[0038] Specifically:

[0039] When the vibration frequency is not within the set frequency range, it means that the working part is not in the working state, the vibration sensor outputs a low level to the control part 11, and the PA6 pin of the control part 11 receives the low level signal from the vibration sensor to keep the lighting body 20 in the off state.

[0040] When the vibration frequency is within the set frequency range, the vibration sensor outputs a high level to the control unit 11 , and the PA6 pin of the control unit 11 receives the signal from the vibration sensor and turns on the lighting lamp body 20 when a continuous high level is detected.

[0041] In this embodiment, the vibration frequency interval can be set to 80-300 Hz, more preferably 100-220 Hz, and can be specifically set depending on the type and working parameters of the power tool.

[0042] The purpose of setting the frequency range is that low-frequency vibrations will also be generated when the power tool is picked up and put down. Therefore, the frequency range can be set to filter out vibrations not generated by work, thereby improving the accuracy of recognition and judgment.

[0043] When the vibration stops, that is, the working part stops working, the vibration sensor outputs a low level to the control part 11, and the PA6 pin of the control part 11 receives the signal from the vibration sensor. When a continuous low level is detected, the lighting body will automatically turn off, thereby entering a low power consumption mode to avoid unnecessary power loss.

[0044] It should be noted that the above-mentioned duration can be 5-10 seconds, and of course it can also be set according to actual needs, and the present utility model does not make any specific limitation.

[0045] To sum up, this embodiment can detect the working status of the power tool through the trigger sensor, and then automatically control the turning on or off of the lighting lamp according to the status of the power tool. This can save energy as much as possible and simplify the user's operation as much as possible while meeting the user's lighting needs. For example, the user does not need to manually turn on or off the lighting, thereby improving the user experience.

[0046] In order to further understand the present invention, some preferred embodiments of the present invention are further described below.

[0047] On the basis of the above embodiments, in a preferred embodiment of the present invention:

[0048] It also includes a fifth resistor R5, a fifteenth resistor R15, a nineteenth resistor R19 and a sixteenth capacitor C16. The electric tool body also includes a battery 50. The battery 50 is connected to the VDD pin of the control unit 11 through the fifth resistor R5; the output end of the trigger sensor 30 is connected to the PA6 pin of the control unit 11 through the nineteenth resistor R19, and is connected to the battery 50 through the nineteenth resistor R19 and the fifteenth resistor R15. The sixteenth capacitor C16 is connected in parallel at both ends of the fifteenth resistor R15.

[0049] Combination Figure 3 Because the vibration sensor will continuously perform switching operations when vibrating, and a large peak voltage may appear at the moment of circuit switching. The peak voltage is a kind of surge voltage, which lasts for a very short time but has a very high value. They will occur regularly in the low-voltage power supply circuit, and the peak value may reach thousands of volts, thereby damaging components. Therefore, this embodiment can avoid this situation by adding the nineteenth resistor R19 and the sixteenth capacitor C16 to form an RC circuit.

[0050] On the basis of the above embodiments, in a preferred embodiment of the present invention:

[0051] It also includes an ADC acquisition circuit 60 and an indicator light circuit 70 . The ADC pin of the control unit 11 is also connected to the battery 50 through the ADC acquisition circuit 60 . The indicator light circuit 70 is electrically connected to both the control unit 11 and the battery 50 .

[0052] Among them, Figure 5 and Figure 6 As shown, the ADC acquisition circuit 60 is used to collect the voltage of the battery 50 and send it to the control unit 11.

[0053] Figure 5 In the figure, the battery is connected to the ADC pin of the control unit 11 through the sixteenth resistor R16. The sixteenth resistor R16 and the eighteenth resistor R18 mainly divide the voltage to reduce the battery voltage to the range that the control unit 11 can collect. The seventeenth capacitor C17 is mainly used for filtering to avoid excessive ripple in the ADC collection, which may cause inaccurate collected values.

[0054] In this embodiment, the indicator light circuit 70 is connected to the PC0 pin of the control unit 11. The indicator light circuit 70 is used to display the battery power and the state of the lighting lamp body. The control unit 11 displays the corresponding power according to the voltage information collected by the ADC acquisition circuit 60. When the voltage of the battery 50 is too low, the power tool is turned off, and all other functions of the power tool and the lighting lamp body enter a low power consumption or non-starting mode. The indicator light circuit 70 also displays the working status of the power tool.

[0055] On the basis of the above embodiments, in a preferred embodiment of the present invention:

[0056] It also includes a lamp body controller 80, which is connected to the control unit 11 through an EN enable pin; the lighting lamp body is connected to the lamp body controller through a filter circuit composed of a capacitor and an inductor.

[0057] Specifically, Figure 7 As shown, the EN enable pin of the lamp body controller 80 is connected to the control unit 11, and the lighting lamp body is connected to the lamp body controller 80 through components such as capacitors and inductors L2. The capacitors and inductors L2 cooperate to form an LC circuit for filtering, thereby preventing the damage to components caused by large spike voltages that may occur at the moment of circuit switching.

[0058] The control unit 11 can control the switch of the circuit by controlling the EN enable pin of the lamp body controller 80. The lighting lamp body is connected to the lamp body controller 80 through the first MOS tube Q1. The drain of the first MOS tube Q1 is connected to the lighting lamp body and the lamp body controller 80, the source is connected to the lighting lamp body, and the gate is connected to the PB1 pin of the control unit 11.

[0059] The sixth resistor R6 and the ninth resistor R9 are current limiting resistors for controlling the brightness of the lighting lamp body. The control unit 11 outputs a PWM signal via the PB1 pin to adjust the brightness of the lighting lamp body 20.

[0060] Furthermore, the control unit outputs a PWM signal through the PB1 pin to adjust the brightness. When a greater light intensity is required, the control unit 11 can send a low-level signal through the PB1 pin, such as a second-level 300lm signal, to control the lighting lamp body 20 to emit 300lm of light; when the control unit 11 sends a high level through the PB1 pin, the brightness of the lighting lamp body 20 returns to normal.

[0061] Furthermore, in order to reduce the static power consumption of the lighting lamp in the power tool, the lamp controller 80 is also connected to the battery 50 through the second MOS tube Q2, wherein the drain of the second MOS tube Q2 is connected to the IN pin of the lamp controller 80, the source is connected to the battery 50, and the gate is connected to the TX pin of the control unit. Figure 2 , 7 , as shown in Figure 8.

[0062] In this embodiment, when the lighting lamp body 20 is not started, the working circuit of the lighting lamp body 20 can be turned off by the second MOS tube Q2, thereby effectively reducing the energy consumption of the battery 50, so that the power tool can be used for a longer time during the discharge process of the battery 50.

[0063] On the basis of the above embodiments, in a preferred embodiment of the present invention:

[0064] It also includes a charging circuit 91 and an input interface 92 , and the input interface 92 is connected to the battery 50 through the charging circuit 91 .

[0065] Among them, Fig. 9 and Fig.10 As shown, in some scenarios, such as in the application scenario of a cordless power tool, a charging circuit 91 and an input interface 92 are also included, and the input interface 92 can be a TYPE C interface. The charging circuit 91 steps down the 5V voltage of the input interface 92 to 4.2V for charging the battery 50. The charging circuit 91 collects the voltage across the second resistor R2 to confirm that the circuit is in a charging state or a fully charged state, wherein:

[0066] When NCHRG is at a low level, NSTDBY is at a high level, and the circuit is in a charging state;

[0067] When NSTDBY is at a low level and NCHRG is at a high level, the circuit is fully charged.

[0068] The remaining capacitors and the first inductor L1 in the charging circuit 91 all play a filtering role. The purpose of the first capacitor C1 is to filter and reduce EMC radiation.

[0069] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the protection scope of the present invention.

Claims

1. An electric tool with lighting function, characterized in that: include: An electric tool body, an illuminating lamp body arranged on the electric tool body, and a trigger sensor; wherein: the electric tool body includes a control part and a working part, the control part is electrically connected to the trigger sensor, the illuminating lamp body and the working part; the trigger sensor is configured to detect the working state of the working part and send it to the control part; the control part is configured to control the turning on or off of the illuminating lamp body according to the working state.

2. The electric tool with lighting function according to claim 1, characterized in that: The working part generates vibration of a predetermined frequency when working, and the trigger sensor is a vibration sensor.

3. The electric tool with lighting function according to claim 1, characterized in that: The lighting lamp body is detachably arranged on the electric tool body.

4. The electric tool with lighting function according to claim 1, characterized in that: It also includes a switch button circuit, which is connected to the control unit through an RC circuit composed of a seventeenth resistor and a fifteenth capacitor.

5. The electric tool with lighting function according to claim 1, characterized in that: It also includes a fifth resistor, a fifteenth resistor, a nineteenth resistor and a sixteenth capacitor. The electric tool body also includes a battery. The battery is connected to the VDD pin of the control unit through the fifth resistor. The output end of the trigger sensor is connected to the control unit through the nineteenth resistor, and is connected to the battery through the nineteenth resistor and the fifteenth resistor. The sixteenth capacitor is connected in parallel at both ends of the fifteenth resistor.

6. The electric tool with lighting function according to claim 5, characterized in that: It also includes an ADC acquisition circuit and an indicator light circuit. The ADC pin of the control unit is also connected to the battery through the ADC acquisition circuit. The indicator light circuit is electrically connected to the control unit and the battery.

7. The electric tool with lighting function according to claim 5, characterized in that: It also includes a lamp body controller, which is connected to the control unit through an enable pin; the lighting lamp body is connected to the lamp body controller through a filter circuit composed of a capacitor and an inductor.

8. The electric tool with lighting function according to claim 7, characterized in that: The lighting lamp body is also connected to the lamp body controller through a first MOS tube, the drain of the first MOS tube is connected to the lighting lamp body and the lamp body controller, the source is connected to the lighting lamp body, and the gate is connected to the control unit.

9. The electric tool with lighting function according to claim 7, characterized in that: The lamp controller is also connected to the battery through a second MOS tube, wherein the drain of the second MOS tube is connected to the IN pin of the lamp controller, the source is connected to the battery, and the gate is connected to the control unit.

10. The electric tool with lighting function according to claim 5, characterized in that: It also includes a charging circuit and an input interface, wherein the input interface is connected to the battery through the charging circuit.

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