JPH0244117U

JPH0244117U -

Info

Publication number: JPH0244117U
Application number: JP12431588U
Authority: JP
Priority date: 1988-09-21
Filing date: 1988-09-21
Publication date: 1990-03-27

Description

[Brief explanation of drawings]

第１図は本考案の実施例を示す断面図、第２図
は他の実施例を示すプランジヤの側面図、第３図
はその他の実施例を示す断面図、第４図は他のそ
の他の実施例を示すダイヤフラムの断面図である
。なお、同一構成要素には同一符号を付してある
。１はガイド、２はエアパツド、３はシリンダ、
４はプランジヤ、５はボール、６はバネ、７は透
孔、１０は円筒状側面、１１はボスト部、１２は
テーパ部、１３はテーパザグリ、１５は半球部、
１６はダイヤフラムである。 Fig. 1 is a sectional view showing an embodiment of the present invention, Fig. 2 is a side view of a plunger showing another embodiment, Fig. 3 is a sectional view showing another embodiment, and Fig. 4 is a sectional view showing another embodiment. It is a sectional view of the diaphragm showing an example. Note that the same components are given the same reference numerals. 1 is the guide, 2 is the air pad, 3 is the cylinder,
4 is a plunger, 5 is a ball, 6 is a spring, 7 is a through hole, 10 is a cylindrical side surface, 11 is a boss portion, 12 is a tapered portion, 13 is a tapered counterbore, 15 is a hemispherical portion,
16 is a diaphragm.

Claims

[Scope of Claim for Utility Model Registration] 1. In a protection device for a static pressure bearing consisting of a guide and an air pad facing each other through a gap, during an emergency air supply stop, the air pad is provided facing the gap and communicates with the outside air. 1. A protection device for a hydrostatic bearing, comprising a thin through hole, a cylinder communicating with the through hole, a member that moves airtight within the cylinder by a spring action, and a member that comes into contact with a guide. 2. The hydrostatic bearing protection device according to claim 1, wherein the member that moves airtight within the cylinder comprises a plunger having a post portion and a coil spring. 3. The protection device for a hydrostatic bearing according to claim 2, wherein a taper counterbore is provided at the connecting portion between the cylinder and the through hole, and a tapered portion that fits into the taper counterbore is provided at the tip of the post portion. 4. The hydrostatic bearing protection device according to claim 1, wherein the member that moves airtight within the cylinder comprises a thin diaphragm having self-lubricating properties. 5. The hydrostatic bearing protection device according to claim 1, 2, 3, or 4, wherein the member that comes into contact with the guide is a ball. 6. The hydrostatic bearing protection device according to claim 5, wherein the member that contacts the guide has a hemispherical shape integrally molded with the plunger. 7. The hydrostatic bearing protection device according to claim 5, wherein the member that contacts the guide has a hemispherical shape integrally molded with the diaphragm.