Electric grinding gun
AssigneeTechway Industrial Co., Ltd.
InventorsPing-Hsin Lo, Chen-Chen Cheng
Life of this patent
Estimating the term…
Abstract
An electric grinding gun has a body, a gear reduction device, a holding cap, and an actuating device. The body has a casing, a rechargeable battery, a protective circuit board, a switch, a trigger, a motor, a cooling fin and a mounting barrel. The gear reduction device is rotatably mounted in the mounting barrel and has a seat, two planet gears and a gear ring. The seat is rotatably mounted in the mounting barrel and has a shaft hole, two gear recesses and a connecting axle. The holding cap is securely mounted around the mounting barrel to hold the gear reduction device in the mounting barrel and has an inner thread and a through hole. The actuating device is connected detachably to the seat of the gear reduction device and has a panel and an adhering layer.
Claims10
An electric grinding gun having
- a body having
- a casing being hollow;
- a rechargeable battery being mounted detachably in the casing;
- a protective circuit board being mounted in the casing and being electrically connected to the rechargeable battery;
- a switch being mounted in the casing and being electrically connected to the protective circuit board of the body;
- a motor being mounted in the casing and being electrically connected to the switch and having
- a front side;
- a rotating shaft being connected rotatably to the front side of the motor and having an external surface;
- and
- multiple engaging teeth being formed around the external surface of the rotating shaft;
- a cooling fin being mounted in the casing near the motor;
- and
- a mounting barrel being mounted on the casing;
- a gear reduction device being rotatably mounted in the mounting barrel of the body and having
- a seat being rotatably mounted in the mounting barrel of the body and having
- a rear end;
- a front end;
- an external surface;
- a shaft hole being formed in the rear end of the seat and being mounted around the rotating shaft of the motor;
- two gear recesses being formed in the external surface of the seat near the rear end and aligning with the engaging teeth of the motor;
- and
- a connecting axle being formed on and protruding from the front end of the seat and having a free end;
- two planet gears being rotatably mounted in the gear recesses of the seat and engaging the engaging teeth on the rotating shaft, and each planet gear having a mounting post connected to the seat to hold the planet gear in a corresponding gear recess of the seat;
- and
- a gear ring being securely mounted in the mounting barrel of the body, being mounted around the seat and having
- an internal surface;
- and
- multiple engaging teeth being formed around the internal surface of the gear ring and engaging the planet gears to make the seat rotating relative to the gear ring;
- a holding cap being securely mounted around the mounting barrel of the body to hold the gear reduction device in the mounting barrel and having
- a front side;
- and
- a through hole being formed through the front side of the holding cap,
- wherein the connecting axle of the seat extends out of the through hole of the holding cap;
- and
- an actuating device being connected detachably to the seat of the gear reduction device and having
- a panel being connected detachably to the connecting axle of the seat and having a front side;
- and
- an adhering layer being mounted on the front side of the panel.
Dependencies are inferred from the claim text.