Hand power tool and drive train

A drive train for a powered hand tool, the drive train comprising:

• a motor;
• a motor shaft coupled to the motor and rotating about a first axis of rotation in response to a rotational force received from the motor;
• a drive shaft rotating about a second axis of rotation offset from the first axis of rotation and arranged in parallel to the first axis of rotation;
• a rotational coupling device coupling the motor shaft to the drive shaft;
• a hammering device having a first end thereof coupled to the drive shaft;
• a bevel gear assembly coupled to a second end of the hammering device, the bevel gear assembly converting the rotational force about the second axis of rotation from the drive shaft to a rotational force about a third axis of rotation that is orthogonal to the second axis of rotation;
• and
• a tool chuck coupled to the bevel gear assembly, wherein
• in a first mode, the tool chuck is configured to rotate about the second axis of rotation so as to selectively adjust an orientation of the tool chuck with the motor in an off state, and
• in a second mode, the hammering device is configured to convert the rotational force generated by the motor into a repeated rotational impact at the tool chuck that is exerted about the third axis of rotation as the tool chuck rotates about the third axis of rotation in response to the rotational force generated by the motor.