Electric power tool
View Patent ↗An electric power tool includes a holder, a motor, and a transmission mechanism. The motor includes a stator and a rotor. The rotor includes a rotary shaft and a rotor body. The rotary shaft is coupled to the transmission mechanism. The rotator includes at least the rotor body. The rotator rotates. The electric power tool further includes an absorbing member. The absorbing member has a property to absorb a lubricant. The absorbing member is arranged between the rotator and the transmission mechanism.
1. An electric power tool comprising:
a holder configured to hold a tip tool thereon;
a motor including a stator and a rotor, the rotor being configured to rotate with respect to the stator; and
a transmission mechanism configured to transmit rotational power of the rotor to the tip tool,
the rotor including: a rotary shaft coupled to the transmission mechanism; and a rotor body configured to rotate along with the rotary shaft,
the electric power tool including a rotator including at least the rotor body and configured to rotate,
the electric power tool further including an absorbing member, the absorbing member having a property to absorb a lubricant and arranged between the rotator and the transmission mechanism.
2. The electric power tool of claim 1 , further comprising a fixing member arranged between the rotator and the transmission mechanism, wherein
the rotor is configured to rotate with respect to the fixing member, and
the absorbing member is arranged between the rotator and the fixing member.
3. The electric power tool of claim 2 , further comprising a bearing configured to hold the rotary shaft rotatably, wherein
the fixing member includes a bearing holder stage configured to hold the bearing, and
the absorbing member is arranged between the rotator and the bearing holder stage.
4. The electric power tool of claim 2 , wherein
the absorbing member is in contact with the fixing member.
5. The electric power tool of claim 1 , wherein
the absorbing member is in contact with the rotator.
6. The electric power tool of claim 1 , wherein
the absorbing member is fixed to the rotator.
7. The electric power tool of claim 1 , wherein
the rotator further includes a fan.
8. The electric power tool of claim 1 , wherein
the absorbing member has a through hole configured to pass the rotary shaft therethrough.
9. The electric power tool of claim 1 , wherein
the absorbing member includes nonwoven fabric as a material thereof.
10. The electric power tool of claim 1 , wherein
the absorbing member has heat resistance.
11. The electric power tool of claim 1 , wherein
the absorbing member has a sheet shape.
12. The electric power tool of claim 1 , further comprising a housing that houses the motor and the transmission mechanism therein, wherein
the housing has at least one vent provided at a position where the at least one vent faces the rotator and/or a position where the at least one vent is located opposite from the transmission mechanism with respect to the rotator.
13. The electric power tool of claim 2 , wherein
the absorbing member is sandwiched between the rotator and the fixing member.