Work machine

A work machine, comprising:

• a motor, having a rotor extending in an axial direction, a drive shaft integrally rotatably connected to the rotor and extending in the axial direction, and a motor gear part provided in the drive shaft;
• a spindle, provided on one side in the axial direction of the motor;
• and
• a transmission mechanism, connected to the motor gear part and transmitting a rotational force of the drive shaft to the spindle to rotate the spindle,
• wherein the transmission mechanism comprises:
• an idle gear, rotatably provided on the spindle and engaged with the motor gear part;
• a bearing, rotatably supporting the spindle and configured on a radially outer side of the drive shaft with respect to the idle gear;
• and
• a ring gear, having a ring shape and engaged with the idle gear,
• wherein the transmission mechanism comprises a support part formed on other side in the axial direction of the spindle and supporting the idle gear, and
• the support part comprises a fitting part configured in line in a radial direction of the motor gear part and the bearing and fitted with a radially inner side of the bearing.

A work machine, comprising:

• a motor, having a rotor extending in an axial direction, a drive shaft integrally rotatably connected to the rotor and extending in the axial direction, and a motor gear part provided in the drive shaft;
• a spindle, provided on one side in the axial direction of the motor;
• and
• a transmission mechanism, connected to the motor gear part and transmitting a rotational force of the drive shaft to the spindle to rotate the spindle,
• wherein the transmission mechanism comprises:
• a support part, formed on other side in the axial direction of the spindle;
• an idle gear, rotatably provided on the support part and configured as a two-stage gear comprising a large diameter gear part engaged with the motor gear part and a small diameter gear part having a smaller diameter than the large diameter gear part;
• a ring gear, having a ring shape and engaged with the idle gear;
• and
• a bearing, rotatably supporting the spindle,
• wherein the small diameter gear part and the ring gear is configured on the other side in the axial direction with respect to the large diameter gear part.

A work machine, comprising:

• a motor, having a rotor extending in an axial direction, a drive shaft integrally rotatably connected to the rotor and extending in the axial direction, and a motor gear part provided in the drive shaft;
• an impact mechanism, generating a rotational impact force by transmitting a rotational force of the drive shaft;
• a transmission mechanism, connected to the motor gear part and the impact mechanism and transmitting a rotational force of the drive shaft to the impact mechanism,
• wherein the impact mechanism comprises:
• a spindle, provided on one side in the axial direction of the motor;
• a hammer, extrapolated to the one side in the axial direction of the spindle and connected to the spindle through a cam mechanism;
• an energizing spring, energizing the hammer to the one side in the axial direction;
• and
• an anvil, provided on the one side in the axial direction of the hammer,
• wherein the transmission mechanism comprises:
• a support part, formed on other side in the axial direction of the spindle;
• an idle gear, rotatably provided on the support part;
• a ring gear, having a ring shape and engaged with the idle gear;
• and
• a bearing, rotatably supporting the spindle,
• wherein the support part comprises:
• a first support part, rotatably supported by the bearing and locking the energizing spring;
• a second support part, configured on the other side in the axial direction with respect to the first support part;
• and
• a support shaft, extended between the first support part and the second support part and rotatably supporting the idle gear.