Single-nozzle air nozzle head and direct-pressure type dual-valve automatic switchover air nozzle head

Abstract

The invention discloses a single-nozzle air nozzle head and a direct-pressure type dual-valve automatic switchover air nozzle head. The single-nozzle air nozzle head at least comprises a body, a mouthpiece and a valve plug, wherein the mouthpiece is provided with a nozzle which is placed in one end of the valve plug, and then is placed in a valve hole of the body, a plurality of annularly arranged and spaced clamping jaws are formed in at least one terminal or two terminals of the valve plug, and an arch part is formed on the outer surface of each clamping jaw; at least one flow channel formed inside the valve plug and the nozzle are conducted, the body is provided with an air supply hole and can be connected with a pneumatic supply, the valve plug can do limited reciprocating displacement between a first position and a second position in the body. By the aforementioned structure, different types of nozzles to be charged can be pumped by a single hand, and the nozzles to be charged can be strongly fixed; furthermore, a leakage condition in the process of pumping can be minimally reduced by the structure, therefore, the operating smooth and convenience can be greatly promoted when either a single purpose air nozzle or a dual purpose air nozzle pumps up.

Description

technical field [0001] The present invention relates to a single-purpose or dual-purpose tuyere head, in particular to a technical field in which the air nozzle can be directly inflated by one-handed control of an inflatable nozzle inserted into a nozzle, thereby greatly improving single-purpose or dual-purpose The operation of the nozzle head is smooth and convenient when pumping air. Background technique [0002] Previously, the dual-purpose air nozzle head is just as shown in the prior patents such as Taiwan Application No. 095107665 and No. 097203517. However, these prior patents all have the following disadvantages: [0003] 1. When pumping air in these previous patents, one hand must be used to hold the body to control the inflation nozzle to be inserted into any joint, and then use the other hand to push the wrench to move the internal pressure cylinder down. It is inconvenient to use two-handed operation, and it is time-consuming and labor-intensive. [0004] 2. In...

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Problems solved by technology

[0003] 1. When pumping air in these previous patents, one hand must be used to hold the body to control the inflation nozzle to be inserted into any joint, and then use the other hand to push the wrench to move the internal pressure cylinder down. It is inconvenient to use two-handed operation, and it is time-consuming and labor-intensive.

[0004] 2. In these previous patents, the axial deformation of the nozzle is forced by the downward movement of the pressure cylinder, and the radial deformation of the nozzle is "indirectly" actuated to "indirectly" actuate the radial deformation of the clamp to be inflated. The radial deformation of the nozzle is quite limited. Therefore, the power of the mouthpiece to clamp the mouth to be inflated is quite limited, so it is very easy to have air leakage when inflating

[0005] 3. The overall structure of these prior patents is too complicated, resulting in the disadvantage that the manufacturing and assembly costs cannot be reduced

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