JP2012234043A - Hinge mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a document or a finger which is an object to be read or the like from being caught between a slider and an operation body in contact with the slider.SOLUTION: When a covering plate 8 is disposed on a slider 5, a tip end portion of the covering plate 5 is bent in a direction to surround an operation body (shaft members 3 and 3) and a case body b is maintained at a maximum angle toward a support member a, the tip end portion of the covering plate 8 is configured to be positioned on a circumscribed line on a vertical line at a side opposite to the covering plate 8 within the circumscribed lines of the operation body or to be protruded to the operation body side from the circumscribed line.

Description

  The present invention relates to a hinge mechanism for connecting a reading device such as a copying machine and a lid.

As this type of hinge mechanism, one described in Patent Document 1 has been conventionally known.
This conventional hinge mechanism is used for, for example, a copying machine. In this type of hinge mechanism, a coil spring is provided between a pair of sliders, and when the support member and the case body are relatively rotated, the support member The slider is moved against the spring force of the coil spring by the provided shaft to generate a torque in the direction of pushing up the lid of the copying machine against the case body.

  In the hinge mechanism as described above, there is a risk that, for example, an original for copying is sandwiched between the shaft provided on the support member and the slider. In addition, grease is applied to the shaft to improve the sliding property between the shaft and the slider, so that if the original document for copying is caught, the grease applied to the shaft will be applied to the original document for copying. As a result, the original document becomes dirty or damaged.

Further, the lid of the copying machine may be kept open up to 90 degrees for some repair purpose. At this time, a person who is repairing may pinch a finger between the shaft and the slider. If the lid closes carelessly in such a situation, it could be the basis of injury.
Therefore, conventionally, an extension piece is provided on the slider, and the extension piece covers the shaft so that a document or a finger is not sandwiched between the shaft and the slider.

JP 2007-286630 A

In the conventional hinge mechanism as described above, the shaft cannot be completely covered with the extending piece provided on the slider, and therefore a gap is formed between the shaft and the extending piece, and the shaft and the slider Could not solve the problem that the manuscript and fingers were caught in between.
An object of the present invention is to provide a hinge mechanism that prevents paper or fingers from being sandwiched between an actuator corresponding to a conventional shaft and a slider.

  The present invention includes a case main body that is fixed to a holding plate side that holds an object to be read, a slider that is movably provided between a pair of guide surfaces provided on both sides of the case main body, and a surface that faces the slider and the slider. A support shaft between the guide surfaces of the case body, a support member rotatably supported by the support shaft and fixed to the reading device side, The support member is provided with an actuating body, and when the support member rotates relative to the support shaft, the turning force is transmitted to the slider so that the slider resists the spring force of the coil spring. It is related with the hinge mechanism moved.

Then, a cover plate is provided on the slider, and the tip of the cover plate is bent in a direction surrounding the operating body, and when the case body is maintained at the maximum angle with respect to the support member, the tip of the cover plate is The outer tangent line of the operating body is located on the outer tangent line on the vertical line on the side facing the cover plate, or protrudes further toward the operating body side than the outer tangent line.
The maximum angle includes, for example, both of those formed by a stopper mechanism and those inevitably determined by the structure of the hinge mechanism.

According to the present invention, since the operating body is always covered with the cover plate, there is no possibility that a reading object or the like is sandwiched between contact portions of the operating body and the slider.
Moreover, since the cover plate is provided on the slider, the cover plate can be integrally formed with the slider. If the cover plate is integrally formed with the slider in this way, the manufacturing cost can be kept low.

1 is a cross-sectional view illustrating a first embodiment in a state where an angle between a support member and a case main body is maintained at 60 degrees. FIG. 3 is a front view illustrating a first embodiment in a state where an angle between a support member and a case main body is maintained at 60 degrees. 1 is a cross-sectional view illustrating a first embodiment in a state where an angle between a support member and a case main body is maintained at 90 degrees. FIG. 3 shows the first embodiment and is a front view of a state in which an angle between a support member and a case main body is maintained at 90 degrees. It is a perspective view of the support member of a 1st embodiment. It is the fragmentary sectional view which expanded the attachment state of the action body provided in the support member of a 1st embodiment. FIG. 9 is a cross-sectional view illustrating a second embodiment in a state where an angle between a support member and a case main body is maintained at 60 degrees. The 2nd Embodiment is shown and it is a front view in the state where the angle of a support member and a case body was maintained at 60 degrees. FIG. 9 shows a second embodiment and is a cross-sectional view in a state where an angle between a support member and a case main body is maintained at 90 degrees. FIG. 9 is a front view illustrating a second embodiment, in which the angle between the support member and the case main body is maintained at 90 degrees. It is a perspective view of the support member of a 2nd embodiment. It is the fragmentary sectional view which expanded the attachment part of the action body provided in the support member of a 2nd embodiment.

  The first embodiment shown in FIGS. 1 to 6 is a hinge mechanism used in a copier. This hinge mechanism includes a support member a that fixes the reading device X side of the copier shown in FIG. 1 and a support shaft 1. The support member a and a case main body b supported rotatably.

The support member a is provided with both side upright pieces a2 and a2 on both sides of the flat plate portion a1 fixed to the reading device X side of the copying machine, and with a back side upright piece a3 between the both side upright pieces a2 and a2. (See FIG. 5).
A bolt hole a4 for fixing the support member a to the reading device X is formed in the flat plate portion a1, and shaft holes a5 and a5 are formed in the both side pieces a2 and a2. The shaft hole The support shaft 1 is supported by a5 and a5.

  In addition, a pair of shaft members 3 and 3 serving as operating bodies are provided slightly forward and lower than the shaft holes a5 and a5, and the shaft members 3 and 3 are aligned with each other. As is clear from FIG. 6, flange portions are formed at the base ends of the shaft members 3, 3, and the distal ends of the shaft members 3, 3 are spaced from each other as is clear from FIG. 5. They are facing each other.

  Furthermore, the support shaft 1 supported between the shaft holes a5 and a5 supports a case body b that rotates integrally with a presser plate Y (hereinafter referred to as “lid Y”), while being rotatably supported. The case body b has hanging pieces b2, b2 on both sides of the upper plate b1, and the support shaft 1 penetrates the hanging pieces b2, b2 and is supported by the shaft holes a5, a5. In addition, the inner facing surface of these hanging pieces b2 and b2 is used as the guide surface of the present invention.

On the other hand, the first and second sliders 5 and 6 are slidably incorporated between the guide surfaces which are the inner facing surfaces of the hanging pieces b2 and b2 of the case body b. A coil spring 7 that exerts a spring force during compression is interposed therebetween.
The first slider 5 is brought into pressure contact with the support shaft 1 and the second slider 6 is brought into pressure contact with the roller 4 by the action of the spring force of the coil spring 7. 1 and the roller 4 constituting the second operating body.

A cover plate 8 is formed integrally with the first slider 5 on the side surface opposite to the coil spring 7. As is clear from FIG. 2, the cover plate 8 has a width that is substantially full between the two standing pieces a3 and a3, and is bent in a direction that surrounds the shaft members 3 and 3 that are actuating bodies. ing. Further, when the case body b is maintained at the maximum angle with respect to the support member a, the cover plate 8 has the tip of the cover plate 8 facing the cover plate 8 among the circumscribed lines of the shaft members 3 and 3. It is located on the circumscribing line on the vertical line on the side (see FIG. 3).

As described above, the tip end of the cover plate 8 is located on the circumscribed line on the vertical line on the side facing the cover plate 8 among the circumscribed lines of the shaft members 3 and 3, so that the rotation range of the case main body b is In the inside, the cover plate 8 always covers the shaft members 3 and 3 which are working bodies. Thus, since the shaft members 3 and 3 as the operating body are covered with the cover plate 8 within the rotation range of the case main body b, the document or the finger as the reading object or the like is connected to the shaft members 3 and 3 as the operating body. It does not get caught between the first slider 5.
In addition, when the case main body b is maintained at the maximum angle with respect to the support member a, the front end of the cover plate 8 may naturally be configured to protrude toward the operating body side from the circumscribed line.

  In the first slider 5 as described above, the cam surface 9 is formed on the side surface opposite to the coil spring 7. The shaft members 3 and 3 as the operating body perform an arc motion around the support shaft 1 in the process in which the case main body b rotates with respect to the support member a, and the cam surface in the course of the motion. 9 is pushed and the 1st slider 5 is moved, making the coil spring 7 bend.

When the angle between the support member a and the case main body b is in a range of a set angle or less, for example, in this embodiment, a range of 60 degrees or less, the shaft members 3 and 3 are configured to contact the cam surface 9 and 60 degrees In the range of 90 degrees as described above, the shaft members 3 and 3 that are operating bodies are configured to be kept away from the cam surface 9.
When the case main body b is kept at a position of 90 degrees with respect to the support member a, the rear end of the upper plate b1 of the case main body b hits the back side standing piece a3 of the support member a and does not rotate more than 90 degrees. (See FIG. 3). Therefore, in the first embodiment, the maximum angle is when the case body b is opened at 90 degrees with respect to the support member a.

Further, as described above, the first slider 5 moves against the coil spring 7 to bend the coil spring 7, and the spring force of the coil spring 7 at that time pushes up the lid Y, that is, the lid Y. Acts as a torque in the direction of opening. Therefore, for example, in a copying machine, when the lid Y is opened from the closed state, the spring force of the coil spring 7 becomes an assist force with respect to the force for opening the lid Y.
On the other hand, when the lid Y in the opened state is closed, the spring force of the coil spring 7 acts as a damping force for preventing the lid Y from dropping suddenly.

  In any case, in the first embodiment, the cover plate 8 integrated with the first slider 5 covers the shaft members 3 and 3 as the operating body in the process of opening and closing the lid Y. Even if the document is about to enter between the first slider 5 and the first slider 5, the cover plate 8 obstructs the entry. In this way, the cover plate 8 prevents the entry of a document or the like, so that even if the portion where the shaft members 3 and 3 and the cam surface 9 are in contact with grease, the document is not soiled by the grease. Also, it is possible to prevent the fingers from being caught.

The second embodiment shown in FIGS. 7 to 12 is the same as the first embodiment except that the configuration of the operating body is different from that of the first embodiment.
Therefore, about the same component as 1st Embodiment, while using the same code | symbol as 1st Embodiment in FIGS. 7-12, detailed description of those structures is abbreviate | omitted and description of the effect | action is demonstrated about the same component. Is also omitted.

The working body in the second embodiment is the both-side standing pieces a2 and a2 of the support member a, and the roller shafts 13 and 13 are provided at exactly the same positions as the shaft members 3 and 3 of the first embodiment. At the same time, the rollers 14 and 14 are rotatably provided on the roller shafts 13 and 13.
Therefore, in the second embodiment, unlike the first embodiment, it is not necessary to apply grease to the contact portion of the operating body that contacts the cam surface 9.

  According to the second embodiment, even if an original or the like is about to enter between the rollers 14 and 14 and the first slider 5, the cover plate 8 obstructs and prevents it. Therefore, neither a document nor a finger is caught between the rollers 14 and 14 and the first slider 5.

  It is optimal as a hinge mechanism that connects the reading device of the copier and the lid.

a Support member b Case body X Reading device Y Holding plate (lid)
DESCRIPTION OF SYMBOLS 1 Support shaft 3 Shaft member which is an action body 5 Slider 7 Coil spring 8 Cover plate 13 Roller shaft 14 which comprises an action body Roller which comprises an action body

Claims (1)

  Between the case body that is fixed to the holding plate that holds the object to be read, a slider that is movable between a pair of guide surfaces provided on both sides of the case body, and a surface that faces the slider. A support shaft is provided between the guide surfaces of the case body, and a support member that is rotatably supported by the support shaft and fixed to the reading device side is provided. Is provided with an operating body, and when the support member rotates relative to the support shaft, the rotational force is transmitted to the slider, and the slider is moved against the spring force of the coil spring. In the mechanism, a cover plate is provided on the slider, and a tip portion of the cover plate is bent in a direction surrounding the operating body, and the case is supported with respect to the support member. When the body is maintained at the maximum angle, the tip of the covering plate is located on the circumscribing line on the vertical line on the side facing the covering plate among the circumscribing lines of the working body, or protrudes closer to the working body side than the surrounding line A hinge mechanism configured to

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