| 摘要 |
PURPOSE:To always obtain a required pressure by providing the end portion of a support with pressure applying means, a part of which is provided with a pressure shock absorber, the end portion of the pressure shock absorber being brought into pressure contact with a pressed substance. CONSTITUTION:A helical spring 18 has its fulcrum in an upper flange portion 16A of a support 12, and a fluid pressure shock absorber 24 has its fulcrum on a support plate 20. Therefore, a hammering force of the helical spring 18 is transmitted to a pressure contact element 30 through a buffer force of the fluid pressure shock absorber 24, whereby even if friction is caused in the pressure contact element 30, it can retain a predetermined pressure against a pressed surface dye to a hammering force of the helical spring. |
