CN110524493B - Electric tool and electric tool control method - Google Patents
Electric tool and electric tool control method Download PDFInfo
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- CN110524493B CN110524493B CN201810506841.8A CN201810506841A CN110524493B CN 110524493 B CN110524493 B CN 110524493B CN 201810506841 A CN201810506841 A CN 201810506841A CN 110524493 B CN110524493 B CN 110524493B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
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Abstract
The invention relates to an electric tool and a control method thereof, wherein the electric tool comprises a shell, a motor arranged on the shell, an output shaft driven by the motor and a control device, wherein the shell comprises a main shell for accommodating the motor and a main handle connected with the main shell; the control equipment comprises a pattern recognition device and a control module, wherein the control module is connected with the pattern recognition device and the motor; the mode recognition device detects the operation mode of the electric tool, and the control module judges the operation mode of the electric tool according to the received detection signal and controls the motor to enable the electric tool to be switched from the normal operation mode to the high-efficiency operation mode when the electric tool is in the preset operation mode. The operation mode that probably carries out on the electric tool is predetermine, and the user controls the motor so that electric tool switches to high-efficient mode from normal mode when operation electric tool under the operation mode of predetermineeing, can reduce the tired condition of operating personnel work and take place, avoids operating personnel to be injured in tired operation, carries out safety protection to operating personnel, has improved electric tool's safety in utilization.
Description
Technical Field
The invention relates to the technical field of electric control, in particular to an electric tool and an electric tool control method.
Background
The electric tool is a mechanical tool, uses a motor or an electromagnet as power, drives a working head to operate through a transmission mechanism, is usually made into a handheld type and a movable type, has a light structure, and is convenient to carry and use. Because the production efficiency can be improved by several times to tens of times compared with that of a manual tool, the electric tool is widely applied to various fields of national economy and enters families for use.
An operator can select one hand or two hands to hold the electric tool to operate according to actual conditions or habits of the operator, and working parameters of the electric tool are fixedly set during operation. When the electric tool is used for operation, an operator can select one hand or two hands to hold the electric tool, and under the condition that the working parameters of the electric tool are fixed, when the electric tool is held and operated by one hand for a long time, the operator is easy to fatigue, personal safety can be endangered seriously, and the use safety is low.
Disclosure of Invention
In view of the above, it is desirable to provide an electric power tool and an electric power tool control method with high safety in use.
An electric tool comprises a shell, a motor arranged in the shell, an output shaft driven by the motor and a control device, wherein the shell comprises a main shell for accommodating the motor and a main handle connected with the main shell; the control equipment comprises a pattern recognition device and a control module, wherein the control module is connected with the pattern recognition device and the motor; the mode recognition device is used for detecting the operation mode of the electric tool and sending a detection signal to the control module, the control module is used for judging the operation mode of the electric tool according to the received detection signal and controlling the motor to switch the electric tool from a normal operation mode to an efficient operation mode when the electric tool is in a preset operation mode, wherein the work efficiency of the electric tool in the efficient operation mode is higher than that in the normal operation mode.
A power tool control method comprising the steps of:
the mode identification device detects the operation mode of the electric tool and sends a detection signal to the control module;
and when the control module judges that the electric tool is in a preset operation mode according to the detection signal, the control module controls the motor to enable the electric tool to be switched to a high-efficiency operation mode from a normal operation mode, wherein the work efficiency of the electric tool in the high-efficiency operation mode is higher than that in the normal operation mode.
According to the electric tool and the control method of the electric tool, the mode recognition device detects the operation mode of the electric tool, and the control module controls the motor to enable the electric tool to be switched from the normal operation mode to the efficient operation mode when the electric tool is in the preset operation mode. The user controls the motor so that the electric tool is switched to the high-efficiency working mode from the normal working mode when operating the electric tool under the preset operation mode, the condition that the working fatigue of operators is reduced can be reduced, the operators are prevented from being injured in fatigue operation, and therefore safety protection is carried out on the operators, and the use safety of the electric tool is improved.
Drawings
FIG. 1 is a block diagram of an embodiment of a rechargeable electric hammer;
FIG. 2 is a block diagram of an embodiment of a rechargeable electric hammer;
FIG. 3 is a block diagram of a charging electric hammer according to another embodiment;
FIG. 4 is a flow chart of a method for controlling a rechargeable electric hammer according to an embodiment;
fig. 5 is a flowchart of a control method of the charging electric hammer in another embodiment;
fig. 6 is a schematic diagram illustrating a method for controlling a charging electric hammer according to an embodiment.
Detailed Description
In one embodiment, the power tool may be a rotary tool such as a rechargeable electric hammer. The electric tool comprises a shell, a motor arranged on the shell, an output shaft driven by the motor and control equipment, wherein the shell comprises a main shell used for accommodating the motor and a main handle connected with the main shell. The control equipment comprises a pattern recognition device and a control module, wherein the control module is connected with the pattern recognition device and the motor; the mode recognition device is used for detecting the operation mode of the electric tool and sending a detection signal to the control module, the control module is used for judging the operation mode of the electric tool according to the received detection signal and controlling the motor when the electric tool is in a preset operation mode so that the electric tool is switched from a normal operation mode to an efficient operation mode, and the work efficiency of the electric tool in the efficient operation mode is higher than that in the normal operation mode. For the sake of understanding, the following explanation is given by taking the charging electric hammer as an example.
The electric tool shown in fig. 1 and 2 is a vertical charging electric hammer 100, which includes a housing 200, a battery pack 300 detachably mounted on the housing 200, a motor 210 vertically disposed in the housing 200, an output shaft 230 for connecting with a working head, a transmission mechanism 240 for transmitting power of the motor 210 to the output shaft 230, and a hammer mechanism 250 driven by the motor 210 to perform linear reciprocating motion along an axis Z of the output shaft 230; the output shaft 230 of the present embodiment is configured as a hollow shaft, the hammering mechanism 250 is accommodated in the hollow shaft of the output shaft 230, and one end of the output shaft 230, which is far away from the motor 210, is provided with a chuck assembly 260 for connecting a working head; the transmission mechanism 240 includes a mechanical tripping structure 241, and is used for tripping the mechanical tripping structure 241 when the working head encounters a hard object or surface and generates a large reverse torque, so that the rotary power of the motor 210 cannot be continuously transmitted to the working head, and the working head is prevented from generating a large reverse torque, thereby ensuring the operation safety.
The electric hammer 100 further comprises a control device, the control device comprises a pattern recognition device 120 and a control module 130, and the control module 130 is connected with the pattern recognition device 120 and the motor 210; the mode recognition device 120 is configured to detect an operation mode of the electric hammer 100, send a detection signal to the control module 130, and the control module 130 is configured to determine the operation mode of the electric hammer 100 according to the received detection signal and control the motor 210 to switch the electric hammer 100 from a normal operation mode to a high-efficiency operation mode when the electric hammer 100 is in a preset operation mode.
The housing 200 has a main housing 201 for accommodating the motor 210 and the output shaft 230, and a main handle 202 connected to the main housing 201, wherein a neck housing 201a is disposed on the main housing 201 near the working head mounting portion. The electric hammer 100 of the present embodiment also has an auxiliary main handle 203 detachably attached to the neck housing 201 a. The main housing 201 includes a motor housing 201b for housing the motor 210. Referring to fig. 3, the hammer is a three-dimensional solid, and if the axis Z of the output shaft 230 is defined as a pivot axis and the axis Y of the motor shaft 212 is defined as an axis Y, the intersection of the axis Z and the axis Y defines a plane, and the axis X is defined as an axis perpendicular to the plane.
Specifically, the operation modes of the electric hammer 100 include a first operation mode in which the user performs one-handed operation by holding the main handle 202 with only one hand thereof; and a two-hand operation mode in which the user performs an operation by holding the main handle 202 with one hand and the auxiliary main handle 203 with the other hand.
The specific configuration of the pattern recognition device 120 is not unique and the manner of detecting the operational pattern of the hammer 100 may vary. The pattern recognition device 120 in this embodiment includes an inductive sensor connected to the control module 130, and the inductive sensor includes a first inductive sensor 1220a disposed on the main handle 202 of the electric hammer and a second inductive sensor 1220b disposed on the auxiliary main handle 203. First and second inductive sensors 1220a and 1220b are coupled to control module 130. The type of the induction sensor is not exclusive, and may be a pressure sensor, a temperature sensor, or the like.
The preset operation mode in the embodiment of the present invention includes a first operation mode. When the control module 130 only receives the detection information sent by the first inductive sensor 1220a disposed on the main handle 202, the control module 130 determines that the electric hammer 100 is in the first operation mode, that is, the user only holds the main handle 202 with one hand to perform the operation; if the control module 130 receives the detection information sent by the first inductive sensor 1220a of the main handle 202 and the second inductive sensor 1220b of the auxiliary main handle 203, respectively, the control module 130 determines that the two-hand operation mode is selected. When control module 130 determines that hammer 100 is in the first mode of operation, motor 210 is controlled to switch hammer 100 from the normal mode of operation to the high-efficiency mode of operation. Specifically, when the electric hammer 100 is in the first operation mode, the control module 130 controls the motor 210 to increase the hammering parameter and the rotation speed of the electric hammer 100, so that the electric hammer 100 is switched from the normal operation mode to the efficient operation mode. So set up for control module 130 switches electric hammer 100 to high-efficient mode when electric hammer 100 is in the first mode of operation that only grips the main handle with the one hand, shortens the time of punching, avoids the user to carry out long-time work and tired because of electric hammer 100 is lifted to the one hand, has solved the easy tired problem of user one-hand operation, avoids the tired operation of user to endanger personal safety, has improved the safety in utilization of electric hammer.
Further, in one embodiment, control module 130 is further configured to control motor 210 to switch hammer 100 from the high-efficiency mode of operation to the normal mode of operation when hammer 100 is in the two-handed mode of operation. Specifically, when the electric hammer 100 is in the two-hand operation mode, the control module 130 controls the motor 210 to decrease the hammering parameter and the rotation speed of the electric hammer 100, so that the electric hammer 100 is switched from the high-efficiency operation mode to the normal operation mode.
In another embodiment, the pattern recognition device 120 includes a first inductive sensor 1220a disposed on the main handle 202, and a third inductive sensor disposed on the main housing 201, the first inductive sensor 1220a and the third inductive sensor being connected to the control module 130. In this embodiment, the third inductive sensor is disposed near the output shaft 230. For an electric hammer without an auxiliary main handle, when a user holds the main handle 202 with one hand and uses the main housing 201 as an auxiliary support with the other hand, the first inductive sensor 1220a disposed in the main handle 202 can sense the user's holding, and the third inductive sensor disposed in the main housing 201 can sense the support and respectively send a detection signal to the control module 130. The control module 130 can recognize the operation mode of the user based on the detection signals from the first and third inductive sensors 1220a and 1220c, and determines the operation mode as the second operation mode. In this embodiment, although the user actually holds the main handle 202 with one hand and assists in holding the main housing 201 with the other hand, the user mainly holds the main handle 202 to lift the electric hammer, and fatigue is likely to occur even in long-term work. To ensure the safety of the operation, the operation mode is still defined as the preset operation mode, and when the electric hammer is in the second operation mode, the control module 130 also switches the electric hammer 100 to the high-efficiency operation mode, so as to avoid fatigue of the user due to long-time operation of lifting the electric hammer 100 with one hand.
In other embodiments, pattern recognition device 120 includes a contact switch device that is coupled to control module 130. The contact switch device may be disposed at a position suitable for a user to operate and hold, for example, disposed at a main handle, an auxiliary main handle, a motor housing, and the like, and during an actual holding operation process, the control module 130 determines whether the current operation mode is the first operation mode or the second operation mode or the two-handed operation mode according to whether the contact switch device is triggered or a gear position where the contact switch device is triggered, so that the operation is simple, fast, and convenient.
The specific structure of the control module 130 is not exclusive, and in one embodiment, the control module 130 includes a controller that connects the pattern recognition device 120 and the motor 210. Specifically, the controller receives the detection signal sent by the mode recognition device 120, judges the operation mode of the electric hammer 100 according to the detection signal, and controls the motor 210 to switch the electric hammer 100 from the normal operation mode to the high-efficiency operation mode when the electric hammer 100 is in the preset operation mode; when hammer 100 is in the two-hand operation mode, motor 210 is controlled to switch hammer 100 from the high-efficiency operation mode to the normal operation mode. The type of the controller is not unique, and in the embodiment, the controller is a single chip microcomputer.
Above-mentioned electric tool, the user controls the motor so that electric tool switches to high-efficient mode from normal mode when operation electric tool under the predetermined operation mode, can reduce the tired condition of operating personnel work and take place, avoids operating personnel to be injured in tired operation to carry out safety protection to operating personnel, improved electric tool's safety in utilization.
In one embodiment, a method for controlling a power tool, the power tool may be a rechargeable electric hammer. As shown in fig. 4, the method comprises the following steps:
step S110: the mode identification device detects the operation mode of the electric tool and sends a detection signal to the control module.
The operation modes of the electric tool specifically include a first operation mode, a second operation mode and a two-hand operation mode, the specific structure of the mode recognition device is not unique, and the modes for detecting the operation modes of the electric tool are correspondingly different.
Step S120: and when the control module judges that the electric tool is in the preset operation mode according to the detection signal, the control module controls the motor to enable the electric tool to be switched to the high-efficiency operation mode from the normal operation mode.
The working efficiency of the electric tool in the efficient working mode is higher than that in the normal working mode. Specifically, when the electric hammer is in a preset operation mode, the control module controls the motor to improve the hammering parameter and the rotating speed of the electric hammer so that the electric hammer is switched from a normal working mode to a high-efficiency working mode. So set up for control module switches the electric hammer to high-efficient mode when the electric hammer is in predetermineeing the mode of operation, shortens the time of punching, avoids the user to lift the electric hammer because of the one hand and carries out long-time work and tired, has solved the easy tired problem of user one-hand operation, avoids the tired operation of user to harm personal safety, has improved the safety in utilization of electric hammer.
Further, in one embodiment, as shown in fig. 5, after step S120, the electric power tool control method further includes step S130.
Step S130: the control module also controls the motor to switch the power tool from the high-efficiency operating mode to the normal operating mode when the power tool is in the two-hand operating mode. Specifically, when the electric hammer is in a two-hand operation mode, the control module controls the motor to reduce hammering parameters and the rotating speed of the electric hammer, so that the electric hammer is switched from a high-efficiency working mode to a normal working mode.
In order to better understand the above-mentioned control method of the electric tool, the following detailed explanation is made with reference to specific embodiments.
The electric tool comprises a motor and a control device, the control device comprises a pattern recognition device and a control module, the pattern recognition device comprises an induction sensor, the control module comprises a single chip microcomputer, and the single chip microcomputer is connected with the induction sensor. For convenience of description, the induction sensor detects the operation mode of the power tool, and for convenience of description, the power tool is only described as an example when the power tool is in the single-hand operation mode, i.e., the first operation mode, and reference is made to the second operation mode. When the single chip microcomputer judges that the electric tool is in the single-hand operation mode, the motor of the electric tool is controlled, the hammering parameter and the rotating speed of the electric tool are adjusted, the working efficiency is improved, and the machine is switched to the high-efficiency working mode; when the single chip microcomputer judges that the electric tool is in the two-hand operation mode, the single chip microcomputer switches the machine to the normal working mode.
According to the electric tool control method, when the user operates the electric tool in the preset operation mode, the motor is controlled so that the electric tool is switched from the normal working mode to the efficient working mode, the working fatigue condition of operators can be reduced, the operators are prevented from being injured in fatigue operation, the safety of the operators is protected, and the use safety of the electric tool is improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An electric tool comprises a shell, a motor arranged in the shell, an output shaft driven by the motor and a control device, wherein the shell comprises a main shell for accommodating the motor and a main handle connected with the main shell; the control equipment is characterized by comprising a pattern recognition device and a control module, wherein the control module is connected with the pattern recognition device and the motor; the mode recognition device is used for detecting the operation mode of the electric tool and sending a detection signal to the control module, the control module is used for judging the operation mode of the electric tool according to the received detection signal and controlling the motor to switch the electric tool from a normal operation mode to an efficient operation mode when the electric tool is in a preset operation mode, wherein the work efficiency of the electric tool in the efficient operation mode is higher than that in the normal operation mode; the preset operation mode is a first operation mode in which the main handle is held by only one hand; or a second mode of operation in which the main handle is held in one hand while the main housing is held in the other hand.
2. The power tool of claim 1, further comprising a collet assembly disposed at an end of the output shaft distal from the motor, the collet assembly configured to couple to a working head.
3. The power tool of claim 1, further comprising an auxiliary main handle coupled to the housing, the power tool further comprising a two-handed mode of operation wherein the main handle is held in one hand while the auxiliary main handle is held in the other hand.
4. The power tool of claim 3, wherein the control module is further configured to control the motor to switch the power tool from the high-efficiency mode of operation to the normal mode of operation when the power tool is in the two-handed mode of operation.
5. The power tool of claim 3, wherein the pattern recognition device comprises a first inductive sensor disposed on the main handle and a second inductive sensor disposed on the auxiliary main handle, the first and second inductive sensors being coupled to the control module.
6. The power tool of claim 1, wherein the mode recognition device includes a first inductive sensor disposed on the main handle and a third inductive sensor disposed on the main housing, the first and third inductive sensors being coupled to the control module.
7. The power tool of claim 1, wherein the control module controls the motor to increase a hammer parameter and a speed of rotation of the power tool when the power tool is in a predetermined mode of operation to switch the power tool from a normal mode of operation to an efficient mode of operation.
8. The power tool of claim 1, wherein the pattern recognition device includes a contact switch device coupled to the control module.
9. The power tool of any one of claims 1-8, wherein the control module includes a single chip microcomputer coupled to the pattern recognition device and the motor.
10. A control method of an electric tool including a housing, a motor provided in the housing, an output shaft driven by the motor, and a control device, the housing including a main housing for accommodating the motor, a main handle connected to the main housing, the control device including a mode identifying means and a control module, the method comprising the steps of:
the mode identification device detects the operation mode of the electric tool and sends a detection signal to the control module;
when the control module judges that the electric tool is in a preset operation mode according to the detection signal, the control module controls the motor to enable the electric tool to be switched from a normal operation mode to an efficient operation mode, wherein the work efficiency of the electric tool in the efficient operation mode is higher than that in the normal operation mode; the preset operation mode is a first operation mode in which the main handle is held by only one hand; or a second mode of operation in which the main handle is held in one hand while the main housing is held in the other hand.
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| CN201810506841.8A CN110524493B (en) | 2018-05-24 | 2018-05-24 | Electric tool and electric tool control method |
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| CN201810506841.8A CN110524493B (en) | 2018-05-24 | 2018-05-24 | Electric tool and electric tool control method |
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| CN110524493B true CN110524493B (en) | 2021-04-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023097281A1 (en) * | 2021-11-24 | 2023-06-01 | Milwaukee Electric Tool Corporation | Grinder including enhanced sensing and component detection |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114274085A (en) * | 2021-12-31 | 2022-04-05 | 浙江皇冠电动工具制造有限公司 | Electric tool and safe starting method |
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Effective date of registration: 20210918 Address after: 215123 Jiangsu Province, Suzhou City Industrial Park East Road, No. 18 Patentee after: POSITEC TECHNOLOGY (CHINA) Co.,Ltd. (NON SMALL ENTITY) Address before: 215123 Jiangsu Province, Suzhou City Industrial Park East Road, No. 18 Patentee before: POSITEC POWER TOOLS (SUZHOU) Co.,Ltd. |