JPS64535U

JPS64535U -

Info

Publication number: JPS64535U
Application number: JP9536587U
Authority: JP
Priority date: 1987-06-23
Filing date: 1987-06-23
Publication date: 1989-01-05

Description

[Brief explanation of the drawing]

第１図は本考案の用紙トレイの構成を示す斜視
図、第２図はスイングアツプ方式の給紙台の場合
の斜視図、第３図および第３ａ図はそれぞれ駆動
系における逆転防止機構の説明図、第４図および
第５図はそれぞれ本考案の減衰器の構成を示す説
明図、第６図および第７図はそれぞれ本考案の用
紙トレイにおける給紙台の揺動機構の他の実施例
を示す説明図、第８図および第９図はそれぞれ減
衰器に対する駆動軸の回転の制御機構の説明図、
第１０図は用紙トレイにおける給紙台降下制御装
置としてダンパーを用いる場合の説明図、第１１
図は第１０図の装置に用いられるダンパーの断面
図、第１１ａ図は第１１図の要部の拡大説明図、
第１２図は従来例の用紙トレイの平面図であり、
第１３図は第１２図の場合の給紙台の上下動機構
の斜視図である。図中の符号、１……用紙トレイ、２……給紙台
、５……平行上下動機構、８……給紙ローラ、１
０……モータ、１１……減速装置、１２……出力
軸、１３……一方向クラツチ、１５……カツプリ
ング、２０……駆動軸、３０……減衰器、３２…
…ギヤ、４０……ブラケツト、４２……ダンパー
、５０……固定プレート、５１……ブレーキデイ
スク、５５……カムウエイト、５６……ピン、５
７……スプリング、６０……偏心プーリ、６２…
…偏心カム、７０……ダンパー、７１……シリン
ダー、７３……バルブ、７５……ピストン、７６
……受け部。 Fig. 1 is a perspective view showing the configuration of the paper tray of the present invention, Fig. 2 is a perspective view of a swing-up type paper feed tray, and Figs. 3 and 3a are explanations of the reverse rotation prevention mechanism in the drive system, respectively. 4 and 5 are explanatory diagrams showing the structure of the attenuator of the present invention, respectively, and FIGS. 6 and 7 are respectively other embodiments of the rocking mechanism of the paper feed table in the paper tray of the present invention. FIGS. 8 and 9 are explanatory diagrams showing the control mechanism for the rotation of the drive shaft relative to the attenuator, respectively,
Fig. 10 is an explanatory diagram of the case where a damper is used as a paper feed platform lowering control device in a paper tray;
The figure is a sectional view of the damper used in the device shown in Fig. 10, and Fig. 11a is an enlarged explanatory view of the main part of Fig. 11.
FIG. 12 is a plan view of a conventional paper tray.
FIG. 13 is a perspective view of the vertical movement mechanism of the paper feed tray in the case of FIG. 12. Symbols in the figure: 1...Paper tray, 2...Paper feed table, 5...Parallel vertical movement mechanism, 8...Paper feed roller, 1
0... Motor, 11... Speed reduction device, 12... Output shaft, 13... One-way clutch, 15... Coupling, 20... Drive shaft, 30... Attenuator, 32...
... Gear, 40 ... Bracket, 42 ... Damper, 50 ... Fixed plate, 51 ... Brake disc, 55 ... Cam weight, 56 ... Pin, 5
7...Spring, 60...Eccentric pulley, 62...
...Eccentric cam, 70...Damper, 71...Cylinder, 73...Valve, 75...Piston, 76
...Reception part.

Claims

[Scope of Claim for Utility Model Registration] (1) A paper feed table on which paper is placed inside a paper tray is provided so as to be movable up and down, and when the paper feed table rises, it presses the paper against a paper feed roller to feed the paper. In an apparatus configured to lower the paper feed tray when the paper tray is pulled out from the copying machine main body, the drive shaft for vertically moving the paper feed tray is connected to a drive motor via a coupling. The drive motor is connected to the drive motor, and the drive motor is provided with a reverse rotation prevention mechanism, and a deceleration mechanism is provided to prevent the paper feed table from dropping rapidly when the drive shaft is separated from the drive system. A paper feed tray lowering control device for paper trays. (2) The paper feed platform lowering control device for a paper tray according to claim 1, wherein a damper means for controlling the rotational speed of the drive shaft is used as the speed reduction mechanism. (3) Utility model registration claim 1, characterized in that the speed reduction mechanism uses a brake means that generates a pressing force corresponding to the rotational speed of the drive shaft.
A paper feed platform lowering control device in the paper tray described in 2. (4) Utility model registration claim 1, characterized in that the drive shaft is provided with an eccentric drive means, and the descending speed of the paper feed tray can be set according to the shape of the cam surface of the drive means. A paper feed platform lowering control device in the paper tray described in 2.