A cutting tool is used for cutting a workpiece and provided with a base plate for assisting with a cutting action. Cutting tools in the related art are relatively bulky, and the performance of electric motors is not conducive to long-time operation.
A cutting tool is provided. The cutting tool includes: a housing; an electric motor supported by the housing; an accessory mounting portion including an output member connected to a saw blade; a transmission mechanism connecting the electric motor to the output member; and a base plate disposed at the bottom of the housing and having a mounting hole for the saw blade to pass through. The cutting tool further includes a liquid storage system including a liquid storage device configured to store a liquid and detachably mounted on the housing. The electric motor is a brushless motor, where a rotational speed of the electric motor is not lower than 7000 revolutions per minute.
A cutting tool includes: a housing; an electric motor supported by the housing; an accessory mounting portion including an output member connected to a saw blade; a transmission mechanism connecting the electric motor to the output member; and a base plate disposed at the bottom of the housing and having a mounting hole for the saw blade to pass through. The cutting tool further includes: a power interface configured to be detachably connected to a power supply device; and a liquid storage system including a liquid storage device configured to store a liquid and detachably mounted on the housing.
A cutting tool includes: a housing; an electric motor supported by the housing; an accessory mounting portion including an output member connected to a saw blade; a transmission mechanism connecting the electric motor to the output member; and a base plate disposed at the bottom of the housing and having a mounting hole for the saw blade to pass through. The cutting tool further includes: a liquid storage system including a liquid storage device configured to store a liquid and detachably mounted on the housing; and a system control member disposed on a liquid flow path of the liquid storage system and used for controlling the flow state of the liquid in the liquid storage device.
A cutting tool includes: a housing; an electric motor disposed in the housing to provide a driving force for the cutting tool; an operation element capable of being triggered by a user to have multiple operation states; a liquid storage system including a liquid storage device mounted on the housing and a guide guiding a liquid flow direction; a system control member disposed on a liquid flow path of the liquid storage system and used for controlling the flow state of a liquid in the liquid storage device; and a controller electrically connected to at least the operation element and the system control member. The controller is configured to: acquire control signals outputted by the operation element in different operation states; when a first control signal is acquired, control the system control member to be opened so that the liquid storage system is started; and when a second control signal is acquired, control the electric motor to rotate.
A cutting tool includes: a housing; an electric motor disposed in the housing to provide a driving force for the cutting tool; a liquid storage system including a liquid storage device mounted on the housing and a guide guiding a liquid flow direction; a system control member disposed on a liquid flow path of the liquid storage system and used for controlling the flow state of a liquid in the liquid storage device; and an operation element capable of being triggered by a user to have multiple operation states. When the operation element is in a first operation state, the system control member is capable of being triggered to be opened so that the liquid storage system is started; and when the operation element is in a second operation state, the electric motor is capable of being triggered to rotate.
A cutting tool includes: a housing; an electric motor supported by the housing; an accessory mounting portion including an output member connected to a saw blade; a transmission mechanism connecting the electric motor to the output member; and a base plate disposed at the bottom of the housing and having a mounting hole for the saw blade to pass through. The housing includes a shield; and the shield is disposed on the upper side of the base plate.
The present application is described below in detail in conjunction with drawings and examples.
In an example of the present application, referring to
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The cutting tool 100 further includes a sealing member 204. The sealing member 204 shown in
In an example, the sealing member 204 may be disposed on the peripheral side of the second air inlet 103 or the peripheral side of the second vent 202, or disposed at the upper end of the second vent 202. When the battery pack 200 is mounted to the battery pack interface 150, the sealing member 204 can avoid the case where the airflow is discharged from the gap between the second air inlet 103 and the second vent 202, thereby reducing the efficiency of heat dissipation in the housing 110. In an example, the sealing member 204 and the opening of the second air inlet 103 may have the same shape. In an example shown, the sealing member 204 is a rectangular ring. In an example, the sealing member 204 is an elastic member, for example, an elastic rubber ring. Thus, when the battery pack 200 is mounted to the battery pack interface 150, the sealing member can adapt to the mating of the second air inlet 103 with the second vent 202 well to seal the connection between the second air inlet 103 and the second vent 202. In an example, a sealing member may also be disposed on the outer side of the first vent 201 on the battery pack housing 205 to prevent a gap between the battery pack housing 205 and the housing 110 of the tool from affecting a ventilation effect.
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The rated voltage of the battery pack 200 is higher than or equal to 10 V and lower than or equal to 26 V. For example, the rated voltage of the battery pack 200 is 10 V, 12 V, 15 V, 18 V, 20 V, 24 V, 26 V, or the like. In an example, the electric motor 120 is a brushless motor, a rotational speed of the electric motor 120 is not lower than 7000 revolutions per minute when the cutting tool is in a working state, and when the electric motor 120 is unloaded, the electric motor 120 can output torque of greater than or equal to 0.8 N·m and less than or equal to 1.2 N·m. Thus, the cutting efficiency of the cutting tool 100 can be effectively improved, and the overall size of the cutting tool 100 can be relatively small so that the cutting tool 100 is convenient to carry and use. The rotational speed of the motor 120 when the cutting tool 100 enters the working state refers to the rotational speed when the motor 120 enters the working state after completing a starting process.
Referring to
The battery pack interface 150 may extend along the direction of the first straight line 108 so that the battery pack 200 can be inserted into battery pack interface 150 along the direction of the first straight line 108 to be connected to the housing 110. Thus, the battery pack 200 can balance the weight of the electric motor 120 and the weight of the saw blade 131 so that when the user holds the grip 113, a projection of the center of gravity of the cutting tool 100 along a direction perpendicular to the first plane 105 overlaps a projection of the grip 113 along the direction perpendicular to the first plane 105 or a projection of the accessory mounting portion 130 along the direction perpendicular to the first plane 105, or a projection of the center of gravity of the cutting tool 100 along a direction perpendicular to the first plane 105 is between a projection of the grip 113 in the direction perpendicular to the first plane 105 and a projection of the accessory mounting portion 130 in the direction perpendicular to the first plane 105. For example, the battery pack interface 150 extends along a direction perpendicular to the first straight line 108 and parallel to the first plane 105 so that the battery pack 200 can be inserted into the battery pack interface 150 in the direction perpendicular to the first straight line 108 and parallel to the first plane 105 to be connected to the housing 110. Thus, the position of the center of gravity of the whole cutting tool 100 can be adjusted, thereby reducing the burden on the user when operating the cutting tool 100.
In an example, when the liquid storage device 171 is not mounted on the cutting tool 100, the projection of the center of gravity of the cutting tool 100 along the direction perpendicular to the first plane 105 is on the base plate 111, that is, an orthographic projection of the center of gravity of the cutting tool 100 is on the base plate 111. The whole cutting tool can have better balance, and the user saves more effort when holding and using the cutting tool 100. In an example, when the liquid storage device 171 is not mounted on the cutting tool 100, the projection of the center of gravity of the cutting tool 100 along the direction perpendicular to the first plane 105 overlaps the projection of the grip 113 along the direction perpendicular to the first plane 105 or the projection of the accessory mounting portion 130 along the direction perpendicular to the first plane 105, or the projection of the center of gravity of the cutting tool 100 along the direction perpendicular to the first plane 105 is between the projection of the grip 113 in the direction perpendicular to the first plane 105 and the projection of the accessory mounting portion 130 in the direction perpendicular to the first plane 105. The preceding projection refers to an orthographic projection.
The base plate 111 has a first position for causing the cutting tool 100 to be at the maximum cutting depth. When the base plate 111 is at the first position, the distance from the first plane 105 to the lowest point of the saw blade 131 is greater than or equal to 20 mm and less than or equal to 35 mm. The distance from the first plane 105 to the lowest point of the saw blade 131 is the cutting depth of the cutting tool 100. For example, the distance is 20 mm, 22 mm, 24 mm, 26 mm, 29 mm, 32 mm, or 35 mm. Thus, the cutting tool 100 can have a relatively small cutting depth and is more suitable for the working condition where the stone is cut, thereby effectively improving cutting accuracy.
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For example, the liquid storage device 171 is disposed above the accessory mounting portion 130 and located on a side of the grip 113. The output member 1311 is rotatable about a first axis 1312. When the liquid storage device 171 is mounted on the housing 110, an orthographic projection of the liquid storage device 171 along the first axis on the first plane 105 is within an orthographic projection of the outer contour of the housing 110 on the first plane 105.
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When mounted to the cutting tool 100, the saw blade 131 extends along a second plane. An end of the guide 172 is configured to be inclined relative to the second plane so that the liquid area formed by the cooling liquid spouting onto the saw blade 131 is increased and a heat dissipation effect is improved. For example, referring to
For example, the liquid storage system 170 includes a water pump configured to be connected to the guide 172. When the user cuts a wall using the cutting tool 100, the first plane 105 is perpendicular or approximately perpendicular to the ground so that the liquid in the liquid storage device 171 cannot flow sufficiently to the guide port 1721. In this case, the water pump can deliver the liquid, thereby assisting with the operation of the cutting tool 100. For example, the cutting tool 100 further includes an inertial measurement unit configured to detect a relative attitude of the marble cutter, and when the included angle between the first plane 105 and the ground is greater than a preset value, the water pump is controlled by the controller to run, for example, the water pump is controlled by the user to be turned on.
The liquid storage device 171 includes a liquid outlet. The guide 172 is connected to the liquid outlet, and the diameter of the liquid outlet is greater than or equal to 1 mm and less than or equal to 3 mm, for example, the diameter of the liquid outlet is 1 mm, 2 mm, or 3 mm. The liquid flow rate of the liquid outlet is higher than or equal to 0 g/s and lower than or equal to 2 g/s. Thus, the heat dissipation of the cutting tool 100 provided in this example is ensured, and the liquid in the liquid storage device 171 is prevented from being lost too quickly so that the user does not need to frequently add the liquid. Referring to
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For example, a projection of the mudguard 1111 along the direction perpendicular to the first plane 105 toward the first plane 105 extends along a second straight line 109, and the included angle formed by the second straight line 109 and the first straight line 108 is greater than or equal to 100 degrees and less than or equal to 135 degrees. The base plate 111 includes a centerline 1113 passing through the center of the base plate 111, where the centerline 1113 is perpendicular to the direction of the first straight line 108 and the second straight line 109 relatively deviates from the centerline 1113 of the base plate 111 in a direction away from the first straight line 108. Typically, the user grips the cutting tool on one side of the saw blade, and with this configuration, the slurry can be caused to be discharged away from the user, thereby reducing the amount of water and slurry splashed on the user.
The included angle between the stop surface 1112 and the first plane 105 is greater than or equal to 10 degrees and less than or equal to 90 degrees. When the included angle between the stop surface 1112 and the first plane 105 is too small, the size of the base plate 111 is relatively increased, which is not conducive to the compactness of the whole cutting tool. When the included angle between the stop surface 1112 and the first plane 105 is too large, the probability that the slurry splashes over the mudguard to the rear of the mudguard is increased.
Referring to
When the base plate 111 is at the first position, the height of the mudguard 1111 along the direction perpendicular to the first plane 105 is greater than or equal to 11 mm and less than or equal to 15 mm. Thus, the spacing between the base plate 111 and the housing is fully used, and a slurry-blocking effect can be improved.
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For example, the connection device 173 adapts to urban water supply, that is, the connection device 173 can be connected to a tap water pipe. The user may connect, according to requirements, the liquid storage device 171 or the tap water pipe using the connection device 173.
For example, part of the guide 172 is configured to be in contact with the control chamber 161. For example, the guide 172 is configured to be in the shape of a “creeping line” and extend on a side surface of the control chamber 161, thereby increasing the contact area between the guide 172 and the control chamber 161 and dissipating the heat of the control board 160 with the cooling liquid.
The cutting tool 100 further includes a trigger 107 and a system control member 174. The trigger 107 controls the running of the electric motor 120, and the system control member 174 controls the flow of the cooling liquid in the guide 172.
The liquid storage system 170 further includes a linkage device connecting the trigger 107 to the system control member 174, and when the trigger 107 is pressed, the linkage device drives the system control member 174 to be opened. For example, the linkage device includes a linkage member and an elastic member 1741, and the elastic member is connected to the system control member 174. When the trigger 107 is not pressed, the elastic member 1741 keeps the system control member 174 closing the guide 172, and when the trigger 107 is pressed by the user, the linkage device drives the system control member 174 to be opened. Thus, it is convenient for the user to operate the cutting tool 100, and the cooling liquid in the liquid storage device 171 can be saved and the number of times the user needs to add the cooling liquid is reduced.
In an example, the system control member 174 is an electric water valve including an electromagnet, and the cutting tool 100 further includes a controller, where when the electric motor 120 runs, the controller controls the electromagnet to be displaced so that the water valve 174 is opened. For example, the controller is configured to: when the trigger 107 is pressed, open the water valve 174 and control, after N seconds, the electric motor 120 to be turned on so that the heat dissipation effect can be improved; when the trigger 107 is pressed, control the water valve 174 to be opened and the electric motor 120 to be turned on simultaneously; and when the trigger 107 is started, start the electric motor 120 and control, after N seconds, the water valve 174 to be opened so that the cooling liquid can be saved. For example, when the trigger 107 is released, the electric motor 120 is controlled to stop, and then the water valve 174 is controlled to stop.
For example, the liquid storage system 170 further includes a vibration sensor, and when the cutting tool 100 is operated, vibrates, and reaches a preset frequency, the water valve 174 is controlled by the controller to be opened so that the saw blade 131 and other elements are cooled and the dust and the slurry are removed.
When the electric water valve is used, a magnetic circuit is generated by electric power, which causes a relatively high temperature rise of the electromagnet. Therefore, the electric water valve is disposed in a heat dissipation air path provided in the present application, or the guide 172 is configured to be in contact with the electric water valve so that the cooling liquid in the guide 172 is used for dissipating the heat of the electric water valve.
For example, the cutting tool 100 further includes a water valve switch 175 connected to a control circuit of the water valve 174, and the control circuit of the water valve 174 is independent of a control circuit of the electric motor 120 so that the user can separately control, with the water valve switch 175, the water valve 174 to be opened or closed.
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In an example of the present application, air inlets are disposed near the control chamber where the control board is placed so that the airflow flows from the control chamber into the electric motor housing and flows out of the electric motor housing when the fan runs, and the electric motor housing is provided with no additional air inlet. Thus, the heat dissipation airflow dissipates the heat of the control board and then dissipates the heat of the electric motor so that the heat dissipation efficiency of the control board is ensured.
In an example, the trigger 107 in the cutting tool 100 is disposed at the front end of the grip 113 or disposed on the grip 113 so that when holding the tool, the user can more conveniently operate and control the tool to be turned on or off. In a specific implementation, when the user presses the trigger 107, the controller 10 can receive a turn-on signal outputted by the trigger 107 and controls the electric motor 120 to be turned on, and the cutting tool 100 starts and drives the saw blade 131 to rotate. In this example, the trigger 107 may be a press operation switch, a push switch, or a knob switch. The trigger 107 may generate different control signals according to different pressing forces, different control signals according to different push strokes, or different control signals according to different positions of a knob.
In this example, the trigger 107 can control the conduction state of the system control member 174. When the system control member 174 is turned on, the liquid flows in the guide 172, and when the system control member 174 is turned off, no liquid flows in the guide 172. That is to say, 120, the trigger 107 can control not only the running of the electric motor but also the flow of the liquid in the liquid storage device 171. In other words, the trigger 107 can control whether there is the liquid flowing in the guide 172 or not.
In an example, the system control member 174 is a solenoid valve including an electromagnet, where in the case of energization, the solenoid valve is opened and the liquid in the liquid storage device 171 flows out; and in the case of de-energization, the solenoid valve is closed and the liquid in the liquid storage device 171 cannot flow out. In a specific implementation, when the electric motor 120 runs, the controller 10 in the cutting tool 100 may control the electromagnet to be displaced so that the system control member 174 is opened. For example, the controller 10 is configured such that when the trigger 107 is pressed and operated, the system control member 174 is opened and after N seconds, the electric motor 120 is controlled to be turned on so that the heat dissipation effect can be improved. For example, when the trigger 107 is operated, the controller 10 controls the system control member 174 to be opened and the electric motor 120 to be turned on simultaneously. For example, when the trigger 107 is operated, the controller 10 starts the electric motor 120 and controls, after N seconds, the system control member 174 to be opened so that the cooling liquid can be saved. For example, when the trigger 107 is released and the operation ends, the controller 10 controls the electric motor 120 to stop and then controls the system control member 174 to stop.
In an example, to achieve different control states between the electric motor 120 and the system control member 174, the trigger 107 may have multiple different operation states, and different control signals may be outputted to the controller 10 in the different operation states. For example, the trigger 107 may have a certain switch stroke along a preset direction, and at least two control signals can be generated within a synchronous switch stroke. The preset direction refers to the direction in which the switch is operated when the machine is controlled to be turned on. In an implementation, different switch strokes of the trigger 107 correspond to the different operation states of the trigger 107, and the different control signals are generated in the different operation states. For example, when the trigger 107 is in a first operation state, a first control signal can be generated, and when the trigger 107 is in a second operation state, a second control signal can be generated. It is to be understood that the manner in which a switch stroke is generated is related to the type of the trigger 107. For example, the trigger 107 is a press switch, and when the switch is pressed with different forces, corresponding switch strokes are different, where the switch stroke is short when the force is small, and the switch stroke is long when the force is large. For example, the trigger 107 is the push switch, and as the user pushes the switch along a set turn-on direction, the switch stroke gradually increases. For example, the trigger 107 is the knob switch, and as the user rotates the knob along a set turn-on direction, the switch stroke gradually increases. For example, when the switch stroke of the trigger 107 is shorter than or equal to a first stroke threshold, the trigger 107 can generate the first control signal; and when the switch stroke of the trigger 107 is longer than the first stroke threshold, the trigger 107 can generate the second control signal.
In this example, the controller 10 can acquire a control signal outputted by the trigger 107, and when the first control signal is acquired, the controller 10 controls the system control member 174 to be opened so that the liquid storage system 170 is started. Thus, the liquid in the liquid storage device 171 enters the guide 172, flows through the guide 172, and then flows out from the guide ports 1721 to the saw blade 131 so as to wet the saw blade 131 so that the function of dissipating the heat of the grinding or wetting the workpiece can be fulfilled. When the controller 10 acquires the second control signal outputted by the trigger 107, the electric motor 120 can be started to rotate. It is to be understood that since a variation process of the switch stroke is less time-consuming, the system control member 174 can be started and then the electric motor 120 can be started in a short time. Based on the variation of the switch stroke, it is implemented that the system control member 174 and the electric motor 120 are not started simultaneously so that the objective to wet the workpiece and the saw blade in advance without wasting water can be achieved in a suitable time.
In an exemplary example, the switch stroke of the trigger 107 may be refined. For example, when the switch stroke of the trigger 107 is shorter than or equal to a second stroke threshold, the trigger 107 outputs no control signal, that is, the liquid storage device 171 is not opened in advance so that the waste of the liquid can be avoided when the switch stroke is relatively long. When the switch stroke is longer than a third stroke threshold and shorter than or equal to a fourth stroke threshold, a third control signal is outputted; and the controller 10 may control, based on the third control signal, the system control member 174 to be periodically opened, that is to say, the solenoid valve is controlled to be opened or closed cyclically. When the switch stroke is longer than a third stroke threshold, the trigger 107 outputs the first control signal, and the system control member 174 is controlled to be opened. It is to be understood that when the switch stroke is longer than a fourth stroke threshold, the trigger 107 may output the second control signal to control the electric motor 120 to start. The fourth stroke threshold is longer than the third stroke threshold. Different opening states of the system control member 174 are configured based on the preceding switch strokes. When the switch stroke is relatively short, the system control member 174 is not opened, when the switch stroke is slightly long, the system control member 174 is periodically opened, and when the switch stroke is long enough, the system control member 174 is directly opened. Thus, the system control member 174 can more flexibly adapt to a turn-on action of the trigger 107 with the different switch strokes.
It is to be noted that the first stroke threshold and the second to fourth stroke thresholds are set values in different examples and are related to a total switch stroke which the trigger 107 can have, and the first stroke threshold and the second to fourth stroke thresholds are not comparable. Therefore, the size of the first stroke threshold and the sizes of the second to fourth stroke thresholds are not limited.
In an example, in a working process of the cutting tool 100, the rotational speed of the electric motor 120 varies nonlinearly. That is to say, the electric motor 120 has different rotational speeds under different working conditions. For example, when the stone is relatively hard, the electric motor 120 has a relatively low rotational speed so that damage to the saw blade is avoided, and when the stone is relatively soft, the electric motor 120 may have a relatively high rotational speed so that efficiency is improved. However, under different working conditions, dust is generated or the saw blade generates heat at different levels. Therefore, the liquid storage system 170 may be more accurately controlled to meet requirements under the different working conditions.
As shown in
It is to be noted that a driver circuit 20 is further disposed between the electric motor 120 and the controller 10. The driver circuit 20 may transmit a current from the battery pack 200 to stator windings of the electric motor 120 to drive the electric motor 120 to rotate. In an example, the driver circuit 20 includes multiple switching elements, for example, six switching elements. A gate terminal of each switching element is electrically connected to the controller 10 and is configured to receive the control signal from the controller 10. A drain or a source of each switching element is connected to the stator windings of the electric motor 120. The six switching elements receive control signals from the controller 10 to change respective conduction states, thereby changing currents loaded on the stator windings of the electric motor 120 by the battery pack 200. In an example, the driver circuit 20 may be a three-phase bridge driver circuit including six controllable semiconductor power devices (such as field-effect transistors (FETs), bipolar junction transistors (BJTs), or insulated-gate bipolar transistors (IGBTs)). It is to be understood that the preceding switching elements may be any other types of solid-state switches such as the insulated-gate bipolar transistors (IGBTs) or the bipolar junction transistors (BJTs).
In an example, in the working process of the cutting tool 100, the temperature of the system control member 174 may also increase due to frequent energization or de-energization, thereby affecting the control accuracy of the system control member 174. To solve this problem, as shown in
In an example, in the working process of the cutting tool 100, as the liquid is used, the volume of the liquid in the liquid storage device 171 decreases gradually, and if the discharge of the liquid is not stopped in time when the volume of the liquid is lower than a certain value, the liquid storage system 350 may be damaged. As shown in
In an example, as shown in
For example, after the liquid storage system 170 is controlled to stop discharging the liquid, the controller 10 may control the tool 100 to enter a standby state. After the liquid storage device 171 is filled with the liquid again, the tool 100 enters a working mode again, that is, the liquid is controlled to flow out and the electric motor 120 is started. For example, if the controller 10 detects, in a preset time period in which the system control member 174 is closed, that the volume in the liquid storage device 171 is not increased or the liquid flow rate is not increased after the liquid storage system 170 is turned on again, the controller 10 directly controls the electric motor 120 to stop.
In an example, if the controller 10 receives a fourth control signal, the controller 10 controls the electric motor 120 to stop rotating and controls, after the preset time period, the system control member 174 to be closed. It is to be understood that the trigger 107 may send out a fourth control signal when the switch stroke varies from maximum to zero. That is to say, the fourth control signal is a signal outputted by the trigger 107 when the user operates the tool and performs a normal turn-off operation. The fourth control signal is not a control signal for controlling the stop state of the electric motor 120 when the machine is stopped in an abnormal state. The so-called stop of the machine in the abnormal state may include the following cases: since no liquid is filled again during a period of time after the liquid in the liquid storage system 170 is insufficient and the system control member 174 is closed, the electric motor 120 is turned off; or since the system control member 174 has a relatively high temperature, the electric motor 120 is turned off. In this example, the system control member 174 is closed after the preset time period in which the user operates the tool and turns off the tool normally so that the saw blade can be quickly cooled after the machine is stopped and a better dust reduction effect can also be achieved.
In an example, when receiving the fourth control signal, the controller 10 may detect a current rotational speed of the electric motor 120 and match a suitable preset time period according to the rotational speed. For example, the higher the current rotational speed of the electric motor 120 when stopped, the longer the preset time period, and vice versa. In addition, when the electric motor 120 is turned off at a low rotational speed, the system control member 174 may be closed simultaneously.
In an example, at least one power element, such as a metal-oxide-semiconductor (MOS) transistor, is disposed between the system control member 174 and the controller 10, and the controller 10 controls the conduction state of the MOS transistor to control the system control member 174 to be opened or closed.
In an example, the control system of the cutting tool 100 may simultaneously include at least two of the rotational speed detection module 30, the volume detection module 60, the flow rate detection module 50, and the temperature detection module 40. As shown in
In an example, the system control member 174 may not be controlled by the controller 10 to be opened or closed. Instead, when the trigger 107 is triggered, according to the triggered operation state of the trigger 107, the trigger 107 controls, through linkage, the system control member 174 to be opened, periodically opened, or closed. For example, when the trigger 107 is triggered to be in a first operation state, the system control member 174 can be triggered to be opened so that the liquid storage system 170 is started. When the trigger 107 is in a second operation state, the electric motor 120 can be triggered to rotate. It is to be noted that when the trigger 107 is in the second operation state, the second control signal may be generated in this state and transmitted to the controller 10, and the electric motor 120 is controlled by the controller 10 to be turned on. That is to say, the system control member 174 may be controlled by the trigger 107 through the linkage, and the electric motor 120 may be controlled by the controller 10. In an example, without being controlled by the controller 10, the electric motor 120 may be directly controlled by the trigger 107 to be started. For example, with the variation of the switch stroke of the trigger, the trigger 107 may control, through the linkage, the system control member 174 to be opened, periodically opened, or closed.
A method for controlling the electric motor and the system control member in the cutting tool 100 is described below with reference to
In S101, a control signal outputted by an operation element is acquired.
It is to be understood that the operation element may output different control signals based on different switch strokes.
In S102, when the first control signal is acquired, the system control member is controlled to start.
In S103, when the second control signal is acquired, the electric motor is controlled to start.
The control method in the preceding example is also applicable to the control of a cutting tool 300 in the example described below.
In an example, the cutting tool 300 is shown in
In an example, a liquid storage device 371 is mounted on the housing 310. As shown in
Referring to
Referring to
Number | Date | Country | Kind |
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202011567840.8 | Dec 2020 | CN | national |
This application is a continuation of International Application Number PCT/CN2021/139118, filed on Dec. 17, 2021, through which this application also claims the benefit under 35 U.S.C. § 119(a) of Chinese Patent Application No. 202011567840.8, filed on Dec. 25, 2020, which applications are incorporated herein by reference in their entirety.
Number | Date | Country | |
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Parent | PCT/CN2021/139118 | Dec 2021 | US |
Child | 18299527 | US |