JPS6020114Y2 - Copy machine document table device - Google Patents

Description

[Detailed description of the invention] This invention relates to a copying machine document table device in which a contact glass slides, and its purpose is to allow easy sliding without increasing the dimensional accuracy of each part It also prevents excessive force from being applied to the contact glass even if one side of the contact glass is lifted by mistake.
This is to prevent damage.

Conventionally, as shown in FIG. 1, a U-shaped holder 2 is fixed to one side of a transparent contact glass 1, and the bottom 2a of the holder 2 is
A roller guide rail 4 is fixed with screws 3 to the roller guide rail 4, a roller guide rail 6 is fixed to the lower surface of the upper part 5a of the side plate 5 facing the roller guide rail 4, and a large number of rollers 7 are fitted between both roller guide rails 4 and 6. The lower surface of the other side of the contact glass 1 is placed on a guide member 9 fixed to the upper part of the side plate 8, and the contact glass 1 is slidable along the fixed roller guide rail 6. Although manuscript table devices are well known,
If the dimensional accuracy of the holder 2 is even slightly off, an unreasonable force will be applied to the roller guide rail, making it difficult to slide. Therefore, the dimensional accuracy of the holder 2 must be made highly accurate, resulting in high processing costs, and contact When the glass was placed in the home position protruding to one side from the copying machine body, if the protruding end of contact glass 1 was lifted upward by mistake, excessive force was applied to contact glass 1, causing damage to the recolo guide rail. This had the disadvantage that it bent and the sliding movement became unsmooth.

This invention eliminates the drawbacks of the conventional method by attaching the roller guide rail via an elastic body to a holder that is integrally fixed to the contact glass, thereby preventing excessive external forces from acting on the contact glass and the roller guide rail. be.

FIG. 2 shows an embodiment of the present invention, in which a ]-shaped holder 2 is fixed to one side of a transparent contact glass 1, and a roller guide rail is attached to the bottom 2a of the holder 2 via a spring 10. 1
1 is mounted, a screw 12 is loosely fitted into the center hole of the spring 10 and the roller guide rail 11, and the lower part of the screw 12 is screwed and fixed to the bottom 2a of the holder 2.

A roller guide rail 6 is fixed to the lower surface of the upper part 5a of the side plate 5 facing the roller guide rail 11, and both roller guide rails, -
A large number of rollers 7 are fitted between the rails 6 and 11, the other lower surface of the contact glass 1 is placed on a guide member 9 fixed to the upper part of the side plate 8, and the contact glass 1 is guided along the fixed guide rail 6. It is designed so that it can be slid.

Next, the effect will be explained.

Even if an unreasonable force is applied to the holder 2 due to dimensional errors, the spring 1
0 absorbs the external force, no unreasonable force is applied to the roller guide rails 11, 6 and the contact glass 1, and even if the contact glass protruding from the home position is lifted upward, the spring will not act as shown in Fig. 3. 10 absorbs external stress, no excessive force is applied to the roller guide rail 6, 11, and the contact glass 1 is not damaged.

According to the present invention, a holder is fixed to one side of the contact glass, a roller guide rail is placed on the bottom of the holder via a spring, and a screw is loosely fitted into the center hole of the spring and the roller guide rail. The lower part is screwed and fixed to the holder, and a large number of rollers are fitted between it and the roller guide rail fixed to the side plate so that it can slide, so there is no need to apply excessive external force to the holder due to dimensional errors or incorrect operation. Even if the force is applied, the spring absorbs it and no unreasonable force is applied to the contact glass and the roller guide rail, so the accuracy of the holder can be lowered, processing costs can be lowered, and sliding operation can be made smoother. Breakage of the contact glass due to erroneous operation can be prevented.

Note that any other elastic body may be used instead of the spring.

[Brief explanation of drawings]

FIG. 1 is a side sectional view of a conventional device, FIG. 2 is a side sectional view of an embodiment of the present invention, and FIG. 3 is a side sectional view when an excessive external force is applied to the holder shown in FIG. 1... Contact glass, 2... Holding body, 6... Roller guide rail, 7...
Roller, 10... Spring, 11... Roller guide rail, 12... Screw.

Claims (1)

[Scope of utility model registration request] A holder is fixed to one side of the contact glass, a roller guide rail is placed on the bottom of the holder via a spring, a screw is loosely fitted into the center hole of the spring and the roller guide rail, and the lower part is screwed into the holder. A document table device for a copying machine is configured such that it can slide by fitting a number of rollers between the roller guide rails which are fixed together and fixed to a side plate.