Electric winch

An electric winch is used for winding or unwinding a wire rope to hang up or lower down a heavy load, such as lifting up it to a high floor of a building, or lifting up an automobile fallen in a deep valley.There are many kinds of conventional electric winches, and one of them 10 shown in FIG. 1 includes a motor 11, terminals provided on the motor 11 for connecting electric wires to be connected with or disconnected from a controller that is used for rotating the shaft of the motor 11 clockwise or counterclockwise. Further a speed reducer 12 is connected with the shaft of the motor 11, and the speed reducer 12 is provided with a planetary gear unit for rotating a rope shaft 13 for winding or unwinding a wire rope (not shown) thereon. Further a clutch 14 is provided at one side of the rope shaft 13 in the speed reducer 12, having a clutch rod 15 extending upward. When the clutch rod 15 is lowered down or lifted up, the rope shaft 13 is connected to or disconnected from the speed reducer 12. In addition, a fix base 16 is positioned between the motor 11 and the rope shaft 13, and also between the speed reducer 12 and the rope shaft 13, but the fix base 16 is not connected to the rope shaft 13. Moreover, two fix rods 17 are provided tightly between the top of the two fix bases 16 by bolts, having a accurate length equal to the distance between the two fix bases 16 so that the transmitting movement of the parts of the device may be stable and smooth, without errors, enabling the rope shaft 13 rotate smoothly whether clockwise or counterclockwise.

However, the function of the two fix rods 17 is to ensure the accuracy of the distance of the two fix bases 16.In the conventional electric winch they have only that function, but it may also be used for other functions so as to make them more useful.
The feature of the invention is a controller provided on a basic plate and electrically connected to a motor for rotating a speed reducer and then a rope shaft for winding or unwinding a wire rope for lifting up or lowering down a heavy load, and a fix base provided between the motor and the rope shaft and also between the speed reducer and the rope shaft and secured by fix rods to stabilizing the distance between the two fix bases. The fix rods and the basic plate are combined with linking members

Thus, the electric winch 10 according to the present invention has an advantage that the controller 40 is assembled on the base plate 30 by utilizing the presence of the fix rods 27, removing the disadvantage of the conventional electric winch described above that the controller is obliged to be positioned somewhere outside the winch itself. Then the connecting member 51 can be used for connecting a wired remote controller for controlling clockwise and counterclockwise rotation of the motor 20. While the preferred embodiment of the invention has been described above, it will be recognized and understood that various modifications may be made therein and the appended claims are intended to cover all such modifications that may fall within the spirit and scope of the invention.