| 摘要 |
<p>The present invention addresses the problem of providing: a piston-cylinder device for a spray device, the piston-cylinder device being configured so that the piston-cylinder device has excellent sliding properties and so that the leakage of liquid can be prevented as much as possible; and a spray device which uses the piston-cylinder device. This piston-cylinder device (10) for a spray device comprises a cylindrical cylinder section (1) and a piston section (2) which is capable of sliding within the cylinder section (1). The piston section (1) comprises a cylindrical body section (2a) and a flange section (2b) which is formed at the end of the body section (2a) so as to expand outward. The flange section (2b) is made to be in pressure contact with the inner wall of the cylinder section (1), and the flange section (2b) has at the front end thereof a portion having a specific thickness. The thickness of the flange section (2b) is in the range of 0.2 to 0.8 mm.</p> |
