JPH01110341U

JPH01110341U -

Info

Publication number: JPH01110341U
Application number: JP450388U
Authority: JP
Priority date: 1988-01-18
Filing date: 1988-01-18
Publication date: 1989-07-25
Anticipated expiration: 2003-01-18
Also published as: JPH0619069Y2

Description

[Brief explanation of the drawing]

第１図乃至第１４図は本考案の実施例を示し、
第１図は外観の斜視図、第２図は展開斜視図、第
３図は縦断面図、第４図は左側面図、第５図は左
側面図、第６図は第３図の―線断面図、第７
図は要部の展開斜視図、第８図は要部の断面図、
第９図は要部の斜視図、第１０図は要部の展開斜
視図、第１１図乃至第１３図は要部の斜視図、第
１４図は油圧と抵抗値の変化を示すグラフである
。第１５図は従来例の断面図である。符号の説明、１０……ケース、２０……カプラ
、２３……大気開放口、３０……ダイヤフラム、
４０……可動ボデイ、５０……不動ボデイ、６０
……燃料ポンプスイツチ、７０……可変抵抗装置
、７１……摺動電極、７２……面状抵抗体、７５
……ワイヤブラシ、８０……圧力キヤンセル装置
、８１……ベローズ、９０……リターンスプリン
グ装置。 1 to 14 show embodiments of the present invention,
Figure 1 is a perspective view of the exterior, Figure 2 is an exploded perspective view, Figure 3 is a vertical sectional view, Figure 4 is a left side view, Figure 5 is a left side view, Figure 6 is the same as in Figure 3. Line sectional view, 7th
The figure is an exploded perspective view of the main part, Figure 8 is a sectional view of the main part,
Fig. 9 is a perspective view of the main part, Fig. 10 is an exploded perspective view of the main part, Figs. 11 to 13 are perspective views of the main part, and Fig. 14 is a graph showing changes in oil pressure and resistance value. . FIG. 15 is a sectional view of a conventional example. Explanation of symbols, 10...Case, 20...Coupler, 23...Atmospheric release port, 30...Diaphragm,
40...movable body, 50...immovable body, 60
... Fuel pump switch, 70 ... Variable resistance device, 71 ... Sliding electrode, 72 ... Planar resistor, 75
... wire brush, 80 ... pressure cancel device, 81 ... bellows, 90 ... return spring device.

Claims

[Scope of Claim for Utility Model Registration] (1) A fuel pump switch that connects when the oil pressure increases and a variable resistance device for an oil pressure meter that changes the resistance value by a movable body that moves according to the oil pressure in the same case. The hydraulic actuator incorporated in the hydraulic actuator is characterized in that a pressure cancel device for releasing an increase in internal pressure to the outside of the case is provided on the side of the case where the movable body moves when pressurized. Device. (2) The hydraulically actuated device according to claim 1 of the utility model registration, wherein the cancel device comprises a pipe-shaped member that communicates with the inside of the case and is provided outside the case. (3) In the hydraulically actuated device according to claim 1 of the utility model registration, the cancel device includes an atmosphere opening provided in the case and an elastically deformable device provided covering the atmosphere opening, which is capable of preventing at least water. and a cancel member made of a material that does not pass through. (4) The hydraulically actuated device according to claim 3 of the utility model registration, wherein the cancel device comprises a pipe-shaped member that communicates with the inside of the case and is provided outside the case. (5) The hydraulically actuated device according to claim 3 of the above-mentioned utility model registration, wherein the cancel member is made of a bellows and airtightly seals the atmosphere opening from the inside of the case. (5) The hydraulically actuated device according to claim 3 of the utility model registration, wherein the cancel member is a diaphragm provided to cover the atmosphere opening. (6) In the hydraulic actuator according to claim 3 of the utility model registration, the cancel member is a membrane body that is attached to cover the atmosphere opening and that allows only gas to pass therethrough. Device. (7) In the hydraulically actuated device according to claim 3 of the utility model registration, a coupler is connected to the end of the case in the direction in which the movable body moves when pressurized, and an atmosphere opening port is connected to the coupler and the case. A hydraulic operating device characterized by being formed so as to communicate with the inside. (8) The hydraulically actuated device according to claim 3 of the utility model registration, characterized in that the atmosphere opening port is formed in a side wall of the case near the coupler.