JPH0624828Y2 - Document holding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION << Industrial Application Field >> The present invention relates to a document for crimping and holding a document on a document mounting table such as a plane scanning image recording device, a plate making copying camera, an electrophotographic machine, or the like. More specifically, the present invention relates to a document holding device which is improved to be suitable for pressure-holding a thick document.

<< Prior Art >> As a document pressing device of this type, a device disclosed in, for example, Japanese Utility Model Publication No. 57-28189 is conventionally known.

As shown in FIG. 4, the document holding plate 107 is openably and closably supported on the document placing table 101 via a link hinge 104, and the thick document 102 is pressure-bonded and held by the document holding plate 107. . In other words, by interposing the link hinge 104, the pressing surface 1 of the document pressing plate 107 is
The height of 07a can be freely changed according to the thickness of the original 102.

<Problems to be Solved by the Invention> However, in the above-mentioned conventional example, since the document pressing plate 107 is directly supported by the link hinge 104, the document pressing surface 107a is first formed on the thick document 102. When contacting the upper edge of the hinge side and then pressing the entire surface of the thick original 102, a force pulling the upper edge toward the hinge is applied to the upper edge. Therefore, the position of the document itself may be
May cause distortion. That is, in the above-mentioned conventional example, unless the original pressing surface 107a has a structure in which the entire surface of the thick original 102 is pressed in contact with each other at the same time, the above tensile force cannot be canceled, and the thicker the original becomes, the larger the tensile force becomes. Therefore, the above problem has been pointed out.

<< Means for Solving the Problems >> The present invention was made in order to solve the above problems.
It is constructed as follows.

A document holding plate and a slide plate are supported in an openable and closable manner on a document placing table via link hinges. That is, the slide plate is arranged on the upper surface side of the document holding plate in a superposed manner, and both are assembled so as to be relatively slidable, and the slide plate is supported by the link hinge, and when the document is pressure-bonded. The slide plate is configured to slide while leaving the document holding plate.

<Operation> In the present invention, the document holding plate is supported by the link hinge through the slide plate, and the document holding surface is brought into contact with the upper edge of the thick document and then pulled in the hinge direction when the entire surface is pressed. The force is canceled by the slide plate sliding while leaving the document holding plate. Therefore, according to the present invention,
Even if the document pressing surface does not press the entire surface of the thick document at the same time, the tensile force is not generated.

<< Embodiment >> FIGS. 1 to 3 show an embodiment of the present invention. FIG. 1 is a perspective view of a document holding device, and FIG. 2 is a cross-sectional view of a main part of FIG. Is an explanatory diagram of its operation.

This document holding device includes a document holding plate 7, a slide plate 11 and an upper cover 1 on a document placing table 1 via a link hinge 4.
It is configured to support a document retainer 6 composed of 4 and the like.

As for the link hinge 4, the link side member 4a thereof is the document placing table 1
Is rotatably supported by a pair of support tools 3
The tip side member 4b is fixed to one side of the slide plate 11,
The document retainer 6 is configured to be openable and closable via a slide plate 11.

The document holding plate 7 is made of an elastic material such as sponge and is attached to the lower surface of the base plate 8.

The slide plate 11 is arranged so as to overlap the upper surface of the base plate 8,
It is assembled slidably with respect to the base plate 8 via a slide guide 10. That is, the slide plate 11 is provided with a pair of front and rear elongated holes 12 for guide, and the pair of guides 10 having an inverted L-shaped cross section are loosely fitted in the elongated holes 12 to form the base plate 8. A guide 10 is screwed to the upper surface of the slide plate 11, and the slide plate 11 is assembled by the guide 10 so as to be slidable in the left-right direction relative to the base plate 8. The sliding surface between the base plate 8 and the slide plate 11 and the sliding surface between the guide 10 and the slide plate 11 may be coated with a fluorine resin slide tape 9 or may be coated with a fluorine resin, if necessary. It is desirable to apply.

The upper cover 14 is a slide plate 11 via a spacer 13.
A screw is fixed on the upper part of the upper part of the table, and is assembled with the document pressing plate 7 so as to slide integrally with the slide plate 11. The operator holds the original holding plate 7 with the upper cover 14.
Will be opened and closed. In addition, this upper cover 14
May be directly fixed to the guides 10 and 10. In this case, since the cover 14 is not screwed to the slide plate, only the slide plate 11 slides with respect to the document pressing plate 7.

Next, the opening / closing operation of the document retainer 6 will be described with reference to FIG.

When the document retainer 6 is completely opened, the link hinge 4 supports the document retainer 6 in a substantially vertical state.

Then, the thick original 2 is set on the original table 1 and the original retainer 6 is tilted in the closing direction. Here, the link hinge 4 rotates about the fulcrum of the support tool 3, and the pressing surface 7a of the document pressing plate 7 contacts the upper left side of the document 2.

When the document retainer 6 is further tilted, the upper left side of the document 2 (contact point)
The document retainer 6 rotates about the center of rotation, and the retainer surface 7a of the retainer plate 7 comes into pressure contact with the entire surface of the thick document 2. At this time, the slide plate 11 slides toward the hinge 4 with the document pressing plate 7 left, and absorbs the pulling force in the hinge direction generated when the entire surface is pressed.

In the above embodiment, the base plate 8 is interposed between the slide plate 11 and the document pressing plate 7, and the pair of slide guides 10 and 10 are interposed between the slide plate 11 and the base plate 8. Although illustrated, the present invention is not limited to such an assembling structure, and it goes without saying that various modifications can be applied.

<Effect of the Invention> According to the present invention, the link hinge and the slide plate are interposed to support the document retainer, so that an extra force is not applied to the document itself when the thick document is pressed and held, It is possible to prevent misalignment and distortion of the document.

[Brief description of drawings]

1 to 3 show an embodiment according to the present invention. FIG. 1 is a perspective view of a document pressing device, FIG. 2 is a sectional view of a main part of FIG. 1 II, and FIG. FIG. 4 and FIG. 4 are side views of a main part of a conventional example. 1 ... manuscript table, 2 ... manuscript, 4 ... link hinge, 7
…… Original plate, 11 …… Slide plate, 10 …… Guide.

Claims (1)

[Scope of utility model registration request] 1. A document holding device comprising a document holding plate which is openable and closable via a link hinge on a document placing table, and is configured to press and hold a document by the document holding plate. The slide plates are arranged so that they can slide together, and the link hinges support the slide plates so that the slide plates can be opened and closed.When the original is pressed, the slide plate slides with the original holding plate left behind. Document holding device characterized by