JPH02128875U

JPH02128875U -

Info

Publication number: JPH02128875U
Application number: JP3655889U
Authority: JP
Priority date: 1989-03-31
Filing date: 1989-03-31
Publication date: 1990-10-24

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案に係る軸の軸封部構造の一実施
例を示す縦断面図、第２図〜第４図は夫々従来の
問題点と本考案の特徴とを比較して説明するため
の部分拡大断面図、第５図は従来の軸の軸封部構
造の一例を示す縦断面図である。２……貫通孔、３……スピンドル、８……パツ
キングブツシユ、９……パツキング、１０，１１
……リング溝、１４，１６……Ｏリング、１５…
…バツクアツプリング。 Fig. 1 is a longitudinal sectional view showing an embodiment of the shaft sealing structure of the shaft according to the present invention, and Figs. 2 to 4 are for comparing and explaining the problems of the conventional technology and the features of the present invention. FIG. 5 is a longitudinal sectional view showing an example of a conventional shaft seal structure of a shaft. 2... Through hole, 3... Spindle, 8... Packing bush, 9... Packing, 10, 11
...Ring groove, 14, 16...O ring, 15...
…Back at Spring.

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

流体側と大気側とを貫通する貫通孔と該貫通孔
に貫通支持された軸との間に形成される空間部に
、大気側にはパツキングを、また、流体側にはパ
ツキングブツシユを介装し、前記パツキングブツ
シユの軸外周面と接する内周面に２条以上のリン
グ溝を形成し、各リング溝にＯリングを嵌入する
と共に、前記流体側に近い側から１条以上のリン
グ溝にＯリングよりも剛性の高いバツクアツプリ
ングを嵌入した構成を特徴とする軸の軸封部構造
。 In the space formed between the through hole penetrating the fluid side and the atmosphere side and the shaft supported through the through hole, a packing is installed on the atmosphere side and a packing bushing is installed on the fluid side. two or more ring grooves are formed on the inner circumferential surface of the packing bushing in contact with the outer circumferential surface of the shaft, and an O-ring is inserted into each ring groove, and one or more ring grooves are inserted from the side closer to the fluid side. The shaft seal structure features a back-up spring that is more rigid than an O-ring inserted into the groove.