Wrench for an engine clutch of a radio control model

Abstract

A wrench for an engine clutch of a radio control model includes a handle having a receiving space longitudinally defined in the handle. A control unit is rotatably mounted in the receiving space, and includes a first end formed with a press portion and a second end formed with a hook. The press portion presses a centrifugal lever of the engine clutch when mounting and the hook engages to the centrifugal lever when detaching. A drive unit is pivotally mounted to one end of the handle and corresponds to the press portion. The drive unit includes a hole defined in a free end thereof for receiving an input shaft of the engine clutch. A partition is securely laterally attached to the drive unit and has a separation extending therefrom. The separation is provided for easily detaching / mounting a torsion spring of the engine clutch.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a wrench, and more particularly to a wrench for an engine clutch of a radio control model. [0003] 2. Description of Related Art [0004] The power from the engine of a radio control model is transmitted to the drive device via a clutch. With reference to FIG. 10, the clutch includes a seat (1) having an input shaft (2) centrally longitudinally mounted to the seat (1) and connected to the engine of the radio control model. Three stubs (3) extend from the seat (1) opposite to the engine and respectively radially correspond to the input shaft (2). One of the three stub (3) has a centrifugal lever (4) pivotally sleeved thereon. The centrifugal lever (4) includes a through hole (4A) longitudinally defined in one side of the centrifugal lever (4) and a slot (4B) laterally defined to perpendicularly communicate with the through hole (4A). The through hole (4A) is sleeved on a corresponding on...

AI Technical Summary

Benefits of technology

[0008] The main objective of the present invention is to provide an improved wrench for an engine clutch of a radio control model. The wrench can easily detach / mount a centrifugal lever of the engine clutch.

[0009] To achieve the objective, the wrench in accordance with the present invention comprises a handle having a receiving space longitudinally defined in the handle. A control unit is rotatably mounted in the receiving space, and includes a first end formed with a press portion and a second end formed with a hook. The press portion presses a centrifugal lever of the engine clutch when mounting and the hook engages to the centrifugal lever when detaching. A drive unit is pivotally mounted to one end of the handle and corresponds to the press portion. The drive unit includes a hole defined in a free end thereof for receiving an input shaft of the engine clutch. A partition is securely laterally attached to the drive unit and has a separation extending therefrom. The separation is provided for easily detaching / mounting a torsion spring of the engine clutch.

Problems solved by technology

The centrifugal lever (4) is easily worn out because the radio control model is usually operated in a high speed.

However, the centrifugal lever (4) of the clutch of the radio control model is a very small part such that the user difficultly uses the ordinary hand tool, such as pliers and screwdriver, to exchange the worn centrifugal lever.

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