A hinge device and various machines provided with same

Abstract

The invention provides a hinge device which can be flattened and has a simple structure, and various machines provided with the same. The hinge device can prevent a manuscript pressing plate from rapidly falling down when the manuscript pressing plate is closed, and a user can obtain a smooth operation feeling. The hinge device includes: a mounting member attached to a machine body side; a support member attached to the manuscript pressing plate and composed of a fulcrum shaft portion and a support portion; a hinge shaft that rotatably connects the fulcrum shaft portion of the support member between a pair of side plates of the mounting member; a sliding member accommodated in an accommodating part in a sliding manner, wherein a sliding block cam convex part is arranged at the top of the sliding member; an elastic member arranged between the bottom of the accommodating part and the sliding member; a damper arranged in the elastic member; and a pressing rod which abuts against a first rotating cam part at a predetermined closing angle when the manuscript pressing plate performs a closing action, and is accommodated in a guide cylinder part in a sliding manner.

Description

technical field [0001] The present invention relates to a preferred hinge device and various machines equipped with the hinge device, especially used for business machines such as copiers or compound copiers or printing machines, or machine bodies of various machines including furniture, etc. It is also suitable for installation on the cover plate that needs to be opened and closed, such as the original pressing board. Background technique [0002] A hinge device and a copier equipped with the hinge device have always included the following components: a mounting component, which is installed on a machine body such as a copier; The plywood; it is arranged in the receiving part of the installation member, and accommodates the sliding member that applies force toward one-way sliding; when the first rotating cam part arranged on the supporting member abuts against the first sliding cam part arranged on the top of the sliding member, damping The damper will be retracted into th...

AI Technical Summary

Problems solved by technology

[0003] In the hinge device described in the above-mentioned published patent publication, in addition to too many structural parts and high manufacturing cost, another problem is that in the closing operation of the original pressing plate, the descending distance of the push rod will be shorter than that of the first rotating cam part. Also, the distance of the sliding member that is lowered by the first rotating cam portion is large, so that with this structure, when the user performs the closing operation of the document pressing plate, the operating feeling will be strange.

In addition, since the push rod simply abuts against the upper portion of the piston rod, and the axial length of the guide hole of the push rod formed in the sliding member is short, the sliding movement of the push rod is difficult to proceed smoothly; One point is that when the user operates the closing of the original pressing plate, there will be a strange feeling in the operation. At the same time, the gap between the push rod and the guide hole will also be caused by years of use.

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