| 摘要 |
The purpose of the present invention is to make it possible to use a common filter for different strokes of a pressure-filling device. With a filter (20) in a state of being supported by a working fluid injection section main body (17), a guard section (31) of the filter (20) is pressed downward by a pressure-filling gun (37) inserted into the working fluid injection section main body (17) from a working fluid injection opening (16). Consequently, an expandable and contractible section (28) of the filter (20) expands. The bottom surface of the filter (20) is brought into contact with the top surface of a filter contact section (22) by the maximum descending stroke of the pressure-filling gun (37) and the pressure-filling gun (37) stops. As a result, the expansion of the filter (20) also stops and the axial length of the filter (20) is set in accordance with the maximum descending stroke of the pressure-filling gun (37). As a result of the foregoing, the filter (20) can be used in common for various different descending strokes of the pressure-filling gun (37). |
