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EP-4074462-B1 - CONTROL DEVICE AND ELECTRIC POWER TOOL SYSTEM

EP4074462B1EP 4074462 B1EP4074462 B1EP 4074462B1EP-4074462-B1

Inventors

  • SZOMMER, HARRY
  • BROWN, WARREN
  • GERHARDT, GRAHAM
  • PANG, Xiaoli
  • LIANG, BING
  • LU, JUN
  • YANG, Zhihan

Dates

Publication Date
20260506
Application Date
20201214

Claims (13)

  1. An electric power tool system, comprising electric power tools of at least two types of electric power tools, a battery pack (27) and a control device (12) configured for coupling the battery pack (27) to provide electric power to one of the electric power tools, and a cable (23); wherein the control device (12) comprises: a first shell (15) configured to be connected to a battery pack mounting part (25) of the battery pack (27), a first control unit (120) provided in the first shell (15) and configured to control the battery pack (27) to discharge, a first user operation unit (121) disposed on the control device (12) and operable by a user to control the electric power tool (11), and a first interface (21) electrically connected to the first user operation unit (121); each of the electric power tools (11) comprises: a second shell (18), a working component (112), a second control unit (110) provided in the second shell (18) and configured to control the working component (112), and a second interface (22) electrically connected to the second control unit (110); the battery pack mounting part (25) comprises a pair of guide rails, and the battery pack is (27) slidable along the pair of guide rails to be engaged or disengaged with the control device (12); and the first interface (21) is connectable to the second interface (22) of one of the power tools (11) by the cable (23), to electrically connect the respective electric power tool (11) to the control device (12).
  2. The electric power tool system according to claim 1, wherein the first user operation unit (121) comprises a first switch (28), configured to permit or prohibit power transmission from the battery pack (27) to an electric power tool (11).
  3. The electric power tool system according to claim 2, wherein the second control unit (110) is configured to control a working parameter of the working component (112) according to an internally stored preset control instruction.
  4. The electric power tool system according to claim 2, wherein the electric power tool (11) further comprises a second user operation unit (111), the second user operation unit (111) comprising a second switch electrically connected to the second control unit (110), the second control unit (110) configured to enable or disable the working component (112) according to an on/off state of the second switch, and/or, the second user operation unit (111) comprising a second adjustment switch electrically connected to the second control unit (110), the second control unit (110) configured to adjust a working parameter of the working component (112) according to an operation of the user on the second adjustment switch.
  5. The electric power tool system according to claim 1, wherein the second control unit (110) is electrically connectable to the first user operation unit (121) by the cable (23), and is configured to obtain an operation of the user on the first user operation unit (121), and control the working component (112) according to the operation of the user on the first user operation unit (121).
  6. The electric power tool system according to claim 5, wherein the first user operation unit (121) comprises a first adjustment switch (35), and the second control unit (110) is configured to detect, by using the cable (23), an operation of the user on the first adjustment switch (35) and to generate a first adjustment signal for adjusting a working parameter of the working component (112).
  7. The electric power tool system according to claim 6, wherein the cable (23) is provided with three wires (232) inside, wherein two of the wires (232) are conductor wires, configured for power transmission from the battery pack (27) to the electric power tool (11), and one of the wires (232) is a signal wire, configured to electrically connect the second control unit (110) to the first adjustment switch (35).
  8. The electric power tool system according to claim 6, wherein the second control unit (110) is configured to adjust the working parameter of the working component (112) according to the first adjustment signal or control the working component (112) according to an internally stored preset control instruction.
  9. The electric power tool system according to claim 6, wherein the electric power tools (11) further comprise a second user operation unit (111), operable by the user to control the working parameter of the working component (112).
  10. The electric power tool system according to claim 9, wherein the second user operation unit (111) comprises a second switch electrically connected to the second control unit (110), and the second control unit (110) is configured to control on and off of the working component (112) according to an on/off state of the second switch.
  11. The electric power tool system according to claim 9, wherein the second user operation unit (111) comprises a second adjustment switch electrically connected to the second control unit (110), and the second control unit (110) is configured to generate a second adjustment signal according to an operation of the user on the second adjustment switch, and select one of the first adjustment signal and the second adjustment signal according to a preset priority to adjust the working parameter of the working component (112).
  12. A control device (12), configured to couple an electric power tool (11) to a battery pack (27), wherein the control device comprises: a first shell (15); a battery pack mounting part (25), comprising a pair of guide rails configured to be detachably connected to a battery pack (27), so that the battery pack (27) can slide along the pair of guide rails to be engaged or disengaged with the control device (12); a first control unit (120), disposed in the first shell (15) and configured to detect at least one of a voltage, a current, and a temperature of the battery pack (27) to determine a working state of the battery pack (27), and to cut off power transmission from the battery pack to the electric power tool (11) when the battery pack (27) is abnormal; and a first user operation unit (121), disposed on the control device (12) and operable by a user to control a working component (112) of the electric power tool (11); and a first interface, electrically connected to the first user operation unit, the first interface being connectable to a second interface (22) of the electric power tool by using a cable (23), so that the electric power tool (11) is electrically connected to the control device (12) and to control the working component (112) according to an operation of the user on the first user operation unit (121).
  13. The control device according to claim 12, wherein the first control unit (120) is configured to control the battery pack (27) and the working component (112) of the electric power tool, the first control unit (120) includes a recognition module, and the recognition module is configured to recognize a type of an electric power tool (11) connected to the control device (12), so as to select a working parameter matching the electric power tool (11), wherein the first user operation unit (121) includes a first switch (28) and/or a first adjustment switch (35), the first switch (28) is configured to control an electrical connection between the battery pack and the electric power tool, and the first adjustment switch (35) is configured to adjust the working parameter of the electric power tool

Description

BACKGROUND Technical Field The present invention relates to the field of electric power tools, and in particular, to a control device and an electric power tool system. Related Art An existing electric power tool is usually combined with a battery pack directly, resulting in a large volume of the electric power tool. During using, when a user moves a main body of the tool, the battery pack follows the main body of the electric power tool, which is inconvenient to carry and store. Moreover, when the user operates for a long time, the tool is difficult to control, especially for fine operations. Therefore, it is necessary to provide a control device and an electric power tool system to overcome the aforementioned defects. US2017014984A1 discloses a power tool that includes a control unit, a hand tool body and a cable. The control unit include a controller and at least one power unit. The hand tool body is separate from the control unit. The hand tool body includes an end effector of the power tool. The end effector is powered via the at least one power unit. The cable operably couples the control unit and the hand tool body. The controller is configured to communicate with the end effector and at least one other device external to the control unit. The hand tool body does not include any internal power source. SUMMARY In view of this, an implementation of this application provides electric power tools, with a wide application, a smaller volume, better man-machine experience, and high efficiency. The application further provides a control device for the electric power tools. Aspects of an invention are set out in independent claims 1 and 12. Optional features of embodiments of the invention are set out in the dependent claims. The control device is provided with a first shell, a battery pack mounting part, and a first interface, so that the electric power tool is not required to be provided with a battery pack mounting part configured to be connected to a battery pack. By separately disposing the battery pack and the electric power tool, on the one hand, the volume and the weight of the electric power tool can be reduced, so that the electric power tool is easy to carry and store; and on the other hand, when operating the electric power tool, a user only needs to connect the electric power tool to the control device by using a cable, and then dispose the control device aside for a fine operation. Moreover, because the cable can be bent and of a certain length, a distance between the electric power tool and the control device may vary during operation. Further, it is more convenient to move the electric power tool, and man-machine experience is better. In addition, by disposing a first user operation unit on the control device, the user may control a main body of the electric power tool by operating the control device, which has good user operability. Moreover, the main body of the electric power tool may select not to be provided with a user operation unit, which reduces the degree of integration of functions of the main body of the electric power tool, so as to improve reliability of the service life of the electric power tool. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings described herein are only for illustration, and are not intended to limit the scope of the disclosure of this application in any manner. In the accompanying drawings: FIG. 1 is a schematic modular diagram of the electric power tool system according to an implementation of this application;FIG. 2 is a schematic structural diagram of the control device according to an implementation of this application;FIG. 3 is a schematic structural diagram of the electric power tool system according to an implementation of this application, where a control device is connected to an electric power tool by using an electric connector;FIG. 4 is a schematic structural diagram of the electric power tool system shown in FIG. 3, where a control device is not connected to an electric power tool;FIG. 5 is a schematic structural diagram of the electric power tool in the electric power tool system, when the electric power tool is an angle grinder, of which a half shell is removed according to this implementation of this application;FIG. 6a is a schematic structural diagram related to an electric connector in the electric power tool system shown in FIG. 3; FIG. 6b is a schematic structural diagram related to a female joint in the electric connector shown in FIG. 6a; and FIG. 6c is a schematic structural diagram related to a clamping component in the female joint shown in FIG. 6b;FIG 7 is a detailed diagram of a partially stripped cable in the electric power tool system shown in FIG. 3;FIG. 8a is a view of a male joint at another viewing angle in the electric connector shown in FIG. 6a; and FIG. 8b is a view of a female joint at another viewing angle in the electric connector shown in FIG. 6a;FIG. 9 is a partial cross-sectional view of the electric connec