JPS6366670U

JPS6366670U -

Info

Publication number: JPS6366670U
Application number: JP16013586U
Authority: JP
Priority date: 1986-10-21
Filing date: 1986-10-21
Publication date: 1988-05-06

Description

[Brief explanation of drawings]

第１図は本考案メカニカルシールの一実施例を
示す一部断面を表す側面図、第２図は同じく分解
した要部斜視図、第３図および第４図は同じく要
部作動説明図、第５図は従来構造のメカニカルシ
ールの一例を示す一部断面を表わす側面図、第６
図は同じく分解した要部斜視図、第７図は同じく
要部正断面図、第８図は同じくケース傾倒状態の
要部側面図、第９図および第１０図は同じく要部
作動説明図である。１……シヤフト、２，６……Ｏリング、３……
コイルスプリング、５……ハウジング、７……固
定環、８……テーパ状段部、９……平面状切欠部
、１０……回転環、１１，１１ａ，１１ｂ，１１
ｃ，１１ｄ……凹部、１２……ケース、１２′…
…底面、１３，１３ａ，１３ｂ，１３ｃ，１３ｄ
……アーム、１４……軸孔、１５……弦状凸部、
１６……弧状縁部。 Fig. 1 is a partially sectional side view showing an embodiment of the mechanical seal of the present invention, Fig. 2 is an exploded perspective view of the main parts, Figs. 3 and 4 are explanatory views of the main parts, and Figure 5 is a side view showing a partial cross section showing an example of a mechanical seal with a conventional structure;
The figure is an exploded perspective view of the main parts, Fig. 7 is a front sectional view of the main parts, Fig. 8 is a side view of the main parts with the case tilted, and Figs. 9 and 10 are explanatory views of the main parts. be. 1...Shaft, 2, 6...O-ring, 3...
Coil spring, 5... Housing, 7... Fixed ring, 8... Tapered step, 9... Planar cutout, 10... Rotating ring, 11, 11a, 11b, 11
c, 11d... recess, 12... case, 12'...
...Bottom surface, 13, 13a, 13b, 13c, 13d
... Arm, 14 ... Shaft hole, 15 ... Chord-shaped convex part,
16...Arc-shaped edge.

Claims

[Scope of utility model registration request]

A pair of chord-shaped protrusions are formed in the shaft hole bored in the bottom of the case, with part of the edge of the shaft hole projecting parallel to each other at equal distances from the center of the shaft hole, A planar notch corresponding to the chordal convex portion is formed in the tapered stepped portion between the large diameter portion and the small diameter portion of the shaft, so that the shaft and the case fitted onto the shaft are connected to the flat surface. A rotary ring that is engaged with each other in the circumferential direction by a notch and a chordal convex portion and is hermetically fitted onto the shaft is connected to a recess formed on the outer circumferential surface of the rotary ring and from the outer circumferential edge of the case. The rotational torque of the shaft is transmitted through engagement with the arm protruding in the axial direction, and is elastically pressed in the axial direction by a coil spring inserted into the case, which connects the rotating ring to the non-rotating housing. It is a mechanical seal that has a structure in which a fixed ring that is airtightly fitted into the case slides closely against it. 1 between the convex portion and each chord-like convex portion
A mechanical seal characterized in that a pair of arcuate edges are arranged to correspond to each other's centers.