JP2011212801A5

JP2011212801A5 -

Info

Publication number: JP2011212801A5
Application number: JP2010083755A
Authority: JP
Filing date: 2010-03-31
Publication date: 2012-10-18
Anticipated expiration: 2030-03-31

Description

上記目的を達成するために、本発明はモータと、前記モータにより回転するハンマと、前記ハンマの回転力が供給されて回転するアンビルと、を備え、前記モータに流れる電流の大きさに応じて、その後に続く前記モータの動作モードの種類を複数の動作モードから選択することを特徴とする電動工具を提供している。かかる構成により、留め金具に応じて最適な制御を行うことができる。 In order to achieve the above object, the present invention comprises a motor, a hammer that is rotated by the motor, and an anvil that is rotated by being supplied with the rotational force of the hammer, according to the magnitude of the current flowing through the motor. In addition, the present invention provides a power tool characterized in that the type of operation mode of the motor that follows is selected from a plurality of operation modes. With this configuration, optimal control can be performed according to the fastener.

本発明は更に、正転及び逆転可能なモータと、前記モータから駆動力を供給されて正転方向又は逆転方向に回転するハンマと、前記ハンマと別体に設けられ前記ハンマの前記正転方向への回転により回転力が供給されて回転するアンビルと、先端工具を保持可能であり前記先端工具に前記アンビルの回転を伝達する先端工具保持部と、前記モータに正転電力又は逆転電力を供給する電力供給部と、所定期間は前記ハンマと一体的に前記アンビルを回転させるために前記モータに前記正転電力を供給し、前記所定期間経過時に前記モータに前記逆転電力を供給するよう前記電力供給部を制御し、前記逆転電力によって前記モータに流れる電流が第１の所定値以上の場合には前記正転電力と前記逆転電力とを前記第１の切り換え周期で切り換え、前記第１の所定値未満の場合には前記正転電力と前記逆転電力とを前記第２の周期で切り換えるよう前記電力供給部を制御することを特徴とする電動工具を提供している。このような構成によれば、逆転電力によってモータに流れる電流に応じて正転電力と逆転電力の切り換え周期を変化させているので、例えば、モータに流れる電流が大きい場合には木ネジ、小さい場合にはボルトと判断することができ、これにより、それぞれに適した周期で正転電力と逆転電力とを切り換え、留め金具の種類に応じた適切な締結を行うことが可能となる。 The present invention further includes a motor capable of normal rotation and reverse rotation, a hammer which is supplied with a driving force from the motor and rotates in the normal rotation direction or the reverse rotation direction, and the normal rotation direction of the hammer provided separately from the hammer. An anvil that is rotated by being supplied with a rotational force by rotation, a tip tool holding portion that can hold the tip tool and transmits the rotation of the anvil to the tip tool, and supplies a normal rotation power or a reverse power to the motor An electric power supply unit configured to supply the forward rotation power to the motor to rotate the anvil integrally with the hammer for a predetermined period, and to supply the reverse power to the motor when the predetermined period elapses. Controlling the supply unit, and when the current flowing to the motor by the reverse power is greater than or equal to a first predetermined value, the forward power and the reverse power are switched at the first switching period; It provides a power tool and controlling the power supply unit to switch between the reverse rotation power and the forward power at the second period in the case of the serial less than the first predetermined value. According to such a configuration, the switching cycle between the forward rotation power and the reverse rotation power is changed according to the current flowing through the motor due to the reverse rotation power. For example, when the current flowing through the motor is large, the screw is small. Therefore, it is possible to switch between the forward rotation power and the reverse rotation power at a cycle suitable for each, and to perform appropriate fastening according to the type of the fastener.

Claims

A motor,
A hammer rotated by the motor;
An anvil that is rotated by the rotational force of the hammer,
A power tool, wherein a type of operation mode of the motor that follows is selected from a plurality of operation modes according to the magnitude of a current flowing through the motor.

A forward and reverse motor,
A hammer that is supplied with driving force from the motor and rotates in the forward direction or the reverse direction;
An anvil which is provided separately from the hammer and is rotated by a rotational force supplied by the rotation of the hammer in the forward rotation direction;
A tip tool holding portion capable of holding a tip tool and transmitting the rotation of the anvil to the tip tool;
A power supply unit that supplies forward power or reverse power to the motor;
Supplying the forward power to the motor to rotate the anvil integrally with the hammer for a predetermined period, and controlling the power supply unit to supply the reverse power to the motor when the predetermined period has elapsed, When the current flowing through the motor due to the reverse power is greater than or equal to a first predetermined value, the forward power and the reverse power are switched at the first switching period, and when the current is less than the first predetermined value. The power tool, wherein the power supply unit is controlled to switch between the normal rotation power and the reverse rotation power in the second cycle.

A motor,
An output shaft that rotates in the forward direction by the motor,
An electric tool configured to automatically change a control method of the motor according to a current value generated when a signal is given to reverse the motor.