JPH0248230Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a power tool having a calculation function.

Conventional power tools include a control unit that controls the electrical energy, which is connected to a wiring unit that takes in electrical energy from the outside, and an input unit that is connected to the control unit and allows a user to give instructions to the control unit. an optical display section that transmits information to the user, a motor that converts the electrical energy from the control section into rotational force, and a gearbox section that decelerates the rotational force from this motor and transmits it to the tool holding section. However, since the input section does not have the function of performing calculations required during work, it has a drawback that it is difficult to improve work efficiency.

The present invention has been made in view of the above, and its purpose is to provide a power tool having a calculation function that can improve work efficiency.

The features of the present invention are that the input section for giving instructions to the control section is equipped with numbers and keys for addition, subtraction, multiplication, and division, and the control section is equipped with arithmetic processing means for performing necessary calculations, and has a function of controlling electrical energy as well as The main point is that the system has a configuration in which a calculation function is added to the system.

The present invention will be explained in detail below using the embodiments shown in FIGS. 1 to 3.

FIG. 1 is a perspective view showing an embodiment of the power tool of the present invention, and shows an electric drill as an example. On the upper surface of the electric drill main body 1, there are provided an input section 2 through which the user gives instructions regarding the content of the work, and a liquid crystal panel 3 as an optical display section for transmitting information to the user. 4 is a start switch.

FIG. 2 is an enlarged view of the input section 2 and liquid crystal panel 3 in FIG.
a, numeric input key 2b indicating cone diameter, etc., calculation key 2
c, a work key 2d, a calculation key 2e, a time display key 2f, etc. When drilling, input the type of material to be cut and the diameter of the tool using the material input key 2a and number input key 2b, and press the switch. By subtracting 4, the optimum rotational speed is obtained, and at the same time, the actual rotational speed at that time is displayed on the liquid crystal panel 3.

FIG. 3 is a block diagram showing one embodiment of the electric circuit of the power tool of the present invention. In Figure 3, 3
0 indicates an AC power supply, 4 is a starting switch, 31 is a motor, 32 is a rotation speed detection sensor, 33 is a control section, 2 is an input section, 3 is a liquid crystal board, and the control section 33 is a microcomputer 33a, a power supply for the microcomputer. 33
b, a constant speed control circuit 33c, a constant speed control circuit power source 33d, a switching element 33e, etc.

Therefore, the control unit 33 controls the motor 3 during work.
Controls the electrical energy input to motor 1
In addition to controlling the input section 1 at a constant speed, the input section 2 is used when not working.
When the numerical input key 3b and calculation key 2c are operated, four arithmetic operations such as addition, subtraction, multiplication, and division are performed, and the results of the calculations are displayed on the liquid crystal panel 3. The above calculations are performed by the microcomputer 33a, and switching between the input of the drilling work and the input of calculation commands is performed using the work key 2d and the calculation key 2e of the input section 2. Furthermore, when the time display key 2f of the input section 2 is pressed, the system clock generation circuit of the microcomputer 33a is operated by the microcomputer power supply 33b,
The time is displayed on the liquid crystal board 3.

As explained above, according to the present invention, since a calculation function is added, there is an effect that work efficiency can be improved.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of a power tool having a calculation function of the present invention, Fig. 2 is an enlarged view of the input section and liquid crystal panel of Fig. 1, and Fig. 3 is an electric power tool of the present invention. FIG. 2 is a block diagram showing one embodiment of the circuit. 2...Input section, 2b...Numeric input key, 2c...
...Calculation key, 2d...Work key, 2e...Calculation key, 3...Optical display section, 31...Motor, 33
...Control unit, 33a...Microcomputer,
33c... Constant speed control circuit, 33e... Switching element.

Claims (1)

[Scope of utility model registration request] a control section for controlling the electrical energy connected to a wiring section for taking in electrical energy from the outside; an input section for a user connected to the control section to give instructions to the control section; The tool consists of an optical display unit that transmits information to the tool holder, a motor that converts electrical energy from the control unit into rotational force, and a gearbox unit that decelerates the rotational force from the motor and transmits it to the tool holding unit. In the power tool, the input section for giving instructions to the control section is provided with numbers and keys for addition, subtraction, multiplication, and division, and the control section is equipped with an arithmetic processing means for performing necessary calculations, and has functions other than controlling electrical energy. A power tool having a calculation function, characterized in that it has a configuration in which a calculation function is added to the power tool.