| 摘要 |
A rotary head structure of a lawn sprinkling seat, including a base seat, a sprinkling head and a T-shaped locking body. The base seat is formed with a central water-outgoing connector. The sprinkling head has three radially extending water-outgoing passages spaced by equal angle and an insertion post on bottom face for fitting into the locking body which is screwed into the water-outgoing connector of the base seat. The water is conducted from the base seat to the sprinkling head to flow out from the water-outgoing passages thereof. A free end of each water-outgoing passage is formed with a large diameter hole having a conic peripheral wall for receiving a valve post of a hollow ball valve. The valve post of the ball valve is first passed through a tapered opening of a cylindrical valve sleeve and then fitted into the large diameter hole of the water-outgoing passage and fused therewith by ultrasonic wave. The tapered opening of the valve sleeve has an inclined outer peripheral wall face and an inner peripheral wall face for snugly slidably abutting against the spherical face of the ball valve for angle adjustment thereof. The other end of the valve sleeve is screwed with a threaded neck portion of a cylindrical sprinkling sleeve formed with multiple sprinkling holes by different angles. The end of the sprinkling sleeve is formed with an inclined inner face for snugly contacting with the spherical face of the ball valve to complete the assembly.
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