SINGLE-OPENING PUMPING NOZZLE AND DIRECT-PRESSING DUAL-OPENING AUTOMATIC-SWITCHING PUMPING NOZZLE

摘要

The present invention provides a single-opening pumping nozzle and adirect-pressing dual-opening automatic-switching pumping nozzle, which atleast include a main body, a joint mouth, and a plug. The joint mouthincludes a joint opening and is received in an end of the plug to becollectivelydisposed in a bore of the main body. At least one end or two ends of the plugare each provided with a plurality of annularly distributed and mutuallyspacedpawls. Each pawl has an outside surface forming an arc section. The plugincludes, formed in the interior thereof, at least one flow channel incommunication with the joint opening. The main body includes an airsupply hole connectable to an air pressure source. The plug is reciprocallymovable in the main body between first and second positions. With such astructure, it is possible to operate with a single hand for having a valvestem tobe inflated inserted into the joint mouth with simultaneously driving the plugto move to a predetermined position so that the air supply hole is set tosimultaneously communicate with an internal flow channel of the plug and thejoint opening. The bore simultaneously compresses all pawls, so that underthe guidance of the arc sections of the pawls, the pawls automatically andtightly clamp the joint mouth in the radial direction so that filling air intothevalve stem to be inflated can be performed. Two ends of the plug are bothprovided with pawls that are annularly distributed and mutually spaced fromeach other. The pawls of the two ends can respectively receive joint mouthsof different types therein so that it is possible to operate with a singlehand tofill air to valve stems to be inflated of different types.