JPH0398318U

JPH0398318U -

Info

Publication number: JPH0398318U
Application number: JP726290U
Authority: JP
Priority date: 1990-01-29
Filing date: 1990-01-29
Publication date: 1991-10-11

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例の要部を示す分解斜
視図、第２図は軸受の正面図、第３図は軸受と支
持部材との下組状態を示す模式的断面図、第４図
ａはローラの縦断面図、第４図ｂは第４図ａの矢
印−部断面図、第５図は本考案の一実施例の
ローラ機構を示す模式的断面図、第６図は画像形
成装置の概略の配置を説明する模式的断面図、第
７図は従来の定着ユニツトの斜視図、第８図は第
７図の矢印Ｅの方向からの斜視図、第９図は従来
例の組み立て構成を説明する分解斜視図である。１８……ローラ、１８ａ……ローラ部、１８ｂ
，１８ｃ……軸部、１８ｄ……Ｃリング溝、１９
……ギヤ、２０……Ｃリング、２１……軸受、２
１ａ……軸受部、２１ｂ，２１ｃ……保持部、２
１ｄ，２１ｅ……受入部、２１ｆ，２１ｇ……回
転止め、２１ｈ……鍔部、２３……支持部材、２
３ａ……垂直軸支持面、２３ｂ……水平取付面、
２３ｃ……軸受取付部、２３ｄ，２３ｅ……回り
止め切り欠き、２３ｆ……軸逃げ部、２３ｇ，２
３ｈ……ギヤ逃げ部、２３ｉ……ステー取付孔、
２５……ステー、２５ｃ，２５ｄ……取付部。 FIG. 1 is an exploded perspective view showing the main parts of an embodiment of the present invention, FIG. 2 is a front view of the bearing, FIG. 3 is a schematic sectional view showing the bearing and support member in a lower assembled state, and FIG. Figure a is a vertical cross-sectional view of the roller, Figure 4b is a cross-sectional view along the arrow in Figure 4a, Figure 5 is a schematic cross-sectional view showing the roller mechanism of an embodiment of the present invention, and Figure 6 is an image. 7 is a perspective view of a conventional fixing unit, FIG. 8 is a perspective view taken from the direction of arrow E in FIG. 7, and FIG. 9 is a perspective view of a conventional fixing unit. FIG. 3 is an exploded perspective view illustrating the assembled configuration. 18...Roller, 18a...Roller part, 18b
, 18c...Shaft portion, 18d...C ring groove, 19
... Gear, 20 ... C ring, 21 ... Bearing, 2
1a...Bearing part, 21b, 21c...Holding part, 2
1d, 21e...Receiving part, 21f, 21g...Rotation stopper, 21h...Flame part, 23...Supporting member, 2
3a...Vertical shaft support surface, 23b...Horizontal mounting surface,
23c... Bearing mounting part, 23d, 23e... Rotation prevention notch, 23f... Shaft relief part, 23g, 2
3h...Gear relief part, 23i...Stay mounting hole,
25... Stay, 25c, 25d... Mounting part.

Claims

[Claims for Utility Model Registration] 1. A roller mechanism comprising: a roller that rotates by receiving driving force from a drive source; a bearing that supports the shaft of the roller; and a support member that supports the bearing; The abutment portion that contacts the shaft portion of the roller has a concave curved surface corresponding to the curved surface of the shaft portion, and the cross section extending over half of the circumference of the roller has a semicircular arc shape. . A roller mechanism, characterized in that when the roller is fitted into the bearing, the roller is gripped via the end of the circular arc portion. 2. The roller mechanism according to claim 1, wherein the end of the arc portion has flexibility.