Pneumatic motor

Abstract

A pneumatic motor includes a cylinder and a rotor disposed in the cylinder. The rotor includes an axle, and main and secondary blades are slidably received in a plurality of main and secondary sliding slots formed on the axle. The secondary blades touch an inner wall of the cylinder to promote torque output when located at angles equal to or smaller than a specific angle from an inlet of the cylinder. On the contrary, the secondary blades are away from the inner wall of the cylinder to reduce friction between the rotor and the cylinder when located at angles larger than the specific angle from the inlet. Thus, revolution speed of the rotor is retained in a tolerant range, and torque output is promoted significantly.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a pneumatic motor, more particularly to a rotor of a pneumatic motor.[0003]2. Description of the Prior Art[0004]A pneumatic motor is driven by compressed air to provide torque output to drive other tools to rotate further. A conventional pneumatic motor usually has adjustment mechanism to increase power output. For example, a pneumatic motor disclosed in patent TW 1259865 has two sets of inlet and outlet, and the motor also includes a control valve assembly to alternatively open or close the inlet and the outlet. Thus, power stoke of compressed air in the motor is increased, and larger torque output is provided.[0005]However, conventional pneumatic motors don't have sufficient stability of power output. Please refer to a pneumatic motor disclosed in patent TW M388576, the rotor disposes only three blades. When the rotor is driven to rotate by compressed air, entering and releasing of com...

AI Technical Summary

Benefits of technology

The present invention provides a pneumatic motor that produces consistent and larger torque output. It also includes more blades that maintain the strength of the rotor while providing greater torque output. Secondary blades are added to the motor to increase efficiency and promote torque output, while the angle at which they are located ensures that the motor operates at its best speed. The use of these secondary blades helps decrease friction between the rotor and cylinder, resulting in improved performance.

Problems solved by technology

However, conventional pneumatic motors don't have sufficient stability of power output.

When the rotor is driven to rotate by compressed air, entering and releasing of compressed air result that torque the rotor acquires varies to reduce stability, and vibration of the motor is increased.

Hence, number of blades in a pneumatic motor is limited, and applying more blades on a pneumatic motor for providing stabler torque output becomes unworkable in practice.

However, more blades results more friction with the inner wall of cylinder when the axle rotates.

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