JPH0320355U

JPH0320355U -

Info

Publication number: JPH0320355U
Application number: JP8144489U
Authority: JP
Priority date: 1989-07-11
Filing date: 1989-07-11
Publication date: 1991-02-27

Description

[Brief explanation of drawings]

第１図は本考案の現像装置のトナーシール装置
の構成を示す断面図、第２図は本考案の別の実施
例の構成を示す断面図、第３図は本考案の他の実
施例の断面図、第４図は本考案が適用される現像
装置の側面図、第５図は第４図のＸ−Ｘ方向から
見た説明図、第６図は従来の軸受け部分の構成を
示す断面図である。図中の符号、１……感光体ドラム、２……現像
装置、３……ハウジング、４……側フレーム、５
……マグネツトローラ、６……マグネツトトラン
スローラ、７……パドルローラ、８……ブレンダ
ー、９……駆動ギヤ装置、１０……シヤフト、１
１……キヤツプ、１２……突部、１３……小径部
、１４……凹溝、１５……軸受ハウジング、１６
……ベアリング、１７……シール装置、１８……
リング、１９……ｖリング、２０……内側シール
、２１……リング、２２……ｖリング、２５……
外側シール、２６……リング、２７……オイルシ
ール、３０……シール装置、３１……シール板部
材。 FIG. 1 is a cross-sectional view showing the structure of a toner seal device of a developing device of the present invention, FIG. 2 is a cross-sectional view showing the structure of another embodiment of the present invention, and FIG. 3 is a cross-sectional view showing the structure of another embodiment of the present invention. 4 is a side view of the developing device to which the present invention is applied, FIG. 5 is an explanatory view seen from the X-X direction of FIG. 4, and FIG. 6 is a cross section showing the configuration of a conventional bearing part. It is a diagram. Symbols in the diagram: 1... Photosensitive drum, 2... Developing device, 3... Housing, 4... Side frame, 5
... Magnet roller, 6 ... Magnet transformer roller, 7 ... Paddle roller, 8 ... Blender, 9 ... Drive gear device, 10 ... Shaft, 1
DESCRIPTION OF SYMBOLS 1...Cap, 12...Protrusion, 13...Small diameter part, 14...Concave groove, 15...Bearing housing, 16
... Bearing, 17 ... Sealing device, 18 ...
Ring, 19...V ring, 20...Inner seal, 21...Ring, 22...V ring, 25...
Outer seal, 26...Ring, 27...Oil seal, 30...Seal device, 31...Seal plate member.

Claims

[Claims for Utility Model Registration] (1) In a device in which a shaft is supported by a housing frame via a bearing, an end of the shaft is fixed to a bearing of a paddle roller, and the roller is rotatably provided. , an outer seal with a large diameter is arranged on the side of the cap of the paddle roller, and an inner seal is arranged on the bearing part to form a double seal, and the outer seal is provided on the side frame. It is composed of a ring having an L-shaped cross section and an oil seal arranged between the ring and the cap, and the inner seal is arranged between the ring provided in the shaft hole of the side frame and the small diameter part of the cap. 1. A toner sealing device for a fixing device, comprising a V-ring arranged therein. (2) The cap of the paddle roller is configured to have a slightly smaller diameter and protrudes toward the side frame, and a small diameter portion is further protruded from the protrusion toward the side frame, and the outer periphery of the protrusion and the side 2. The toner seal device for a developing device according to claim 1, wherein an oil seal is housed between a ring provided on the frame and constitutes an outer seal. (3) An annular groove is formed on the surface of the paddle roller cap facing the side frame, and the ring is arranged so as to protrude from the side frame so that the ring is inserted into the groove; 2. The toner seal device for a developing device according to claim 1, wherein an oil seal is provided between the outer surface of the groove and the inner surface of the groove to constitute an outer seal.