JPH0377863U - - Google Patents

Description

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

第１図は本考案の一実施例に係る密封装置の要
部縦断面図、第２図は第１図の装置の使用状態の
要部縦断面図、第３図は第１図の装置の金属環先
端部の部分斜視図、第４図は第３図の他の態様を
示す部分斜視図、第５図は第１図の装置の第１シ
ール部材としてのシール本体成形時のゴム生地と
金属環との配置状態の一例を示す概略断面図、第
６図及び第７図は従来の組合せタイプの密封装置
の要部縦断面図である。 符号の説明、１……密封装置、２……シール本
体（第１シール部材）、３……ダストシール（第
２シール部材）、４……ハウジング（外側部材）
、５……軸（内側部材）、６……外周はめ合い部
、７……メインリツプ、８……金属環、９……内
周ゴム部、１０……外周ゴム部、１１……係止環
部（嵌合部）、１２……段部、１４……内向きフ
ランジ、１５……付け根部、１６……スプリング
、１７……バツクアツプリング、１８……金属環
、１９……ダストリツプ（第２シール部）、２０
……先端部、２１……切欠き（連結路）、２２…
…孔（連結路）、２３……ゴム生地。 FIG. 1 is a vertical cross-sectional view of a main part of a sealing device according to an embodiment of the present invention, FIG. 2 is a vertical cross-sectional view of a main part of the device shown in FIG. 1 in use, and FIG. 4 is a partial perspective view showing another aspect of the metal ring tip; FIG. 5 is a partial perspective view of the tip of the metal ring; FIG. A schematic sectional view showing an example of the arrangement with a metal ring, and FIGS. 6 and 7 are vertical sectional views of main parts of a conventional combination type sealing device. Explanation of symbols, 1... Sealing device, 2... Seal body (first seal member), 3... Dust seal (second seal member), 4... Housing (outer member)
, 5... Shaft (inner member), 6... Outer circumference fitting part, 7... Main lip, 8... Metal ring, 9... Inner circumference rubber part, 10... Outer circumference rubber part, 11... Locking ring part (fitting part), 12...Step part, 14...Inward flange, 15...Rotate part, 16...Spring, 17...Backup spring, 18...Metal ring, 19...Dust strip (No. 2 seal part), 20
... Tip part, 21 ... Notch (connection path), 22 ...
...Hole (connection path), 23...Rubber fabric.

Claims (1)

【実用新案登録請求の範囲】 互いに同心的に相対移動自在に組付けられる内
側部材と外側部材間をシールするもので、環状の
第１シール部材と、該第１シール部材の密封対象
流体側に配置される環状の第２シール部材とから
成り、 第１シール部材は、外側部材内周に流体密に固
定される外周はめ合い部と、内側部材外周に摺動
自在に密封接触する第１シールとを有し、 第２シール部材の外径端部には第１シール部材
の外周はめ合い部の密封対象流体側端部外周に嵌
着される筒状の嵌合部を有し、第２シール部材の
内周には内側部材外周に摺動自在に密封接触する
第２シール部を有する密封装置において、 前記第１シール部材の外周はめ合い部のうち、
少なくとも前記第２シール部材の嵌合部が組付け
られる部分を、金属環と、金属環の内外周を被覆
するゴム状弾性体とから構成し、 金属環先端を第２シール部材の反密封対象流体
側端面に当接せしめ、かつ、金属環には、その先
端が第２シール部材に当接した状態で金属環の内
外周のゴム状弾性体を連結するための連結路を設
けて成ることを特徴とする密封装置。[Claims for Utility Model Registration] This seals between an inner member and an outer member that are assembled concentrically and movably relative to each other, and includes a first annular seal member and a first seal member on the side of the fluid to be sealed of the first seal member. an annular second sealing member disposed, the first sealing member comprising an outer circumferential fitting portion fluid-tightly fixed to the inner circumference of the outer member, and a first seal slidably and sealingly contacting the outer circumference of the inner member. The second seal member has a cylindrical fitting part fitted to the outer periphery of the fluid-side end of the first seal member at the outer diameter end thereof; In a sealing device having a second seal part on the inner periphery of the seal member that slidably and sealingly contacts the outer periphery of the inner member, of the outer periphery fitting part of the first seal member,
At least a portion of the second seal member to which the fitting portion is assembled is composed of a metal ring and a rubber-like elastic body covering the inner and outer peripheries of the metal ring, and the tip of the metal ring is the anti-sealing target of the second seal member. The metal ring is provided with a connection path that connects the rubber-like elastic bodies on the inner and outer peripheries of the metal ring with its tip in contact with the second sealing member. A sealing device featuring: