| 摘要 |
An inflator with inflation and deflation effects. The inflator includes: a cylinder body in which a piston is fitted for compressing the gas in a compression room formed in the cylinder body between the piston and the front end of the cylinder body; a piston rod having an internal gas passage, a front end of the piston rod extending through a rear end of the cylinder body into the cylinder body to connect with the piston, a front end of the gas passage communicating with the compression room; a handle connected with a rear end of the piston rod; a gas passage connector located at the cylinder body end of the inflator; a rear end of the gas passage communicating with outer side through the gas passage connector; a cylinder body connector located at the handle end of the inflator; the compression room communicating with the outer side through the cylinder body connector; a first one-way valve only permitting the gas to one-way flow between the compression room and outer side; a second one-way valve only permitting the gas to one-way flow between outer side, the gas passage and the compression room. Along the longitude of the inflator, the two one-way valves only permit the gas to one-way flow in the same direction. When inflating an object, the object is connected with one of the two connectors; when deflating the object, the object is connected with the other connector.
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