JPS5912371Y2 - hinge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hinge that supports, for example, an opening/closing lid of a copying surface of a copying machine.

Conventionally, this type of hinge has been designed to open and close around a pivot point at a fixed position. Therefore, for example, when this type of hinge supports the opening/closing lid of the copying surface of a copying machine, it is generally Because the thickness of the books and documents to be used differs, the opening/closing lid cannot follow the thickness of the books and documents, etc., and therefore,
The leakage of copying light causes a deterioration in the quality of the copied image, and the copying light enters directly into the eyes of the person doing the copying work, causing a reduction in copying efficiency.

This invention was made with attention to the above circumstances,
Its purpose is to provide a so-called free stop mechanism that allows the pivot point to move freely in the vertical direction and to stop at any position.For example, when used to support the opening/closing lid of a copying machine, it is possible to make copies. To provide a hinge that allows an opening/closing lid to follow even when books, documents, etc. have different thicknesses.

Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 1 to 5.

In this embodiment, the hinge of the present invention is applied to support an opening/closing lid that allows the copying surface of a copying machine to be opened and closed, for example.

In the figure, reference numeral 1 denotes a main body member that is attached to a side surface 3 of a copying machine 2 as a first attachment member, for example, via a fixing device such as a set screw.

Reference numeral 4 denotes a movable member that is attached to one side edge 6a of the opening/closing lid 6, which serves as a second attaching body that allows the copying surface 5 of the copying machine 2 to be opened and closed, via a fixing device such as a set screw.

The main body member 1 is provided with a fitting portion 8 into which the slider 7 is fitted so as to be movable in the vertical direction.

That is, the fitting portion 8 of this main body member 1 has tips 8a',
8a' are bent inwardly to fit and hold the pieces g a
, 8a are standing upright facing each other.

And between the fitting holding pieces 8a, 8a of this fitting part 8,
Both side edges 9, 9 of the slider 7 are movably fitted together.

That is, this slider 7 is connected to the slide frame 14 through pins 13 by aligning the pin holes 12 with the slider main body 10 which is movably fitted into the fitting part 8 of the main body member 1. It is constructed by fitting them together.

Note that in this state, both side walls 14 of the slide frame 14
a, 14a are the grooves 10 on both sides of the slide main body 10
a , 10 a and is fitted and fixed.

Further, in both side edges 9 of the slider main body 10, there are notched grooves g a cut into a predetermined length from the movable member 4 side.
, ga are formed, and the notch grooves ga, ga are formed by a locking piece 8b formed by bending the end edge of the fitting holding pieces 8a, 8a of the fitting part 8 on the movable member 4 side inward. , 8b, and the slider 7 moves from the fitting part 8 of the main body member 1 to the movable member 4.
It is designed to prevent it from slipping off to the side.

Moreover, the locking piece 8b of the fitting holding piece g a , 8 a
, 8b includes a constant force spring 15 that presses the slider 7.
As a result, the terminal ends of the notch grooves 9 a and 9 a of the slider 7 are brought into contact with each other.

That is, the constant force spring 15 is a spring material in which a band-shaped steel plate is wound into a spiral shape so as to maintain the wound state at all times. At the same time, the winding free end 15b is provided to apply an elastic urging force to the base end surface 7a of the slider 7 viewed in the longitudinal direction in order to elastically move the slider 7 toward the movable member 4 side.

Furthermore, as shown in FIG. 5, for example, even if the extension from the winding fixed end 15a changes due to the vertical movement of the slider 7, the constant force spring 15 is able to maintain the elastic force (load) applied to the slider 7. ) has the property of maintaining a constant value.

Further, the base end 4a of the movable member 4 is rotatably attached to both ends 7b of the slider 7 via a pin shaft 16.

The movable member 4 can be opened and closed about the pin shaft 16, which is a pivot point relative to the slider 7.

A rotary positioning member 17 is integrally provided inside the movable member 4 and is pivotally supported by the pin shaft 16. Coil springs 19 and 19 are provided to constantly press and bias the opening and closing surfaces 17 a and 17 b of the rotary positioning member 17 of the movable member 4 with the cap body 18 interposed therebetween.

Moreover, the movable member 4 has the coil springs 19 and 19.
The opening/closing position is determined at the rotational position where the pressing direction is perpendicular to the opening/closing surfaces 17 a and 17 b.

With such a structure, the slider 7 can be moved vertically with respect to the main body member 1, and therefore, the vertical position of the pivot point of the movable member 4 that is pivotally connected to the slider 7 can be arbitrarily set. Can be moved freely.

Therefore, even when copying materials 20 having different thicknesses as shown in FIGS. 3 and 4, the opening/closing lid 6 is
Since the thickness of the copy 20 can be followed, the copy 20 can be properly covered with the opening/closing lid 6 that follows the thickness of the copy, thereby preventing leakage of copy light and maintaining the quality of the copy image.

Moreover, at the arbitrary movement position, the constant force spring 15 allows
Since a constant pressing force is always applied to the slider 7, if the spring force of the constant force spring 15 is set to be balanced with the load added to the movable member 4 and the opening/closing lid 6, the opening/closing lid 6
can be freely set to any height, so no matter what thickness the copy is made, the opening/closing lid 6 can be supported at a position that follows the thickness, and at that position, the above-mentioned The copying operation in FIG. 3 or 4 can be performed very efficiently.

In the above embodiment, the hinge of the present invention is applied to support the vertical opening and closing of the opening/closing lid 6 of the copying machine 2, but it can also be applied to other applications, such as supporting the opening and closing of lids other than copying machines. .

Furthermore, the hinge of the present invention can also be applied to support an opening/closing body that opens and closes in the horizontal direction. In this case, the pivot point can be moved to any position in the horizontal direction, and, for example, two constant force springs can be attached to each other. Opposing horizontal spring forces may be balanced to maintain a moved pivot point in its moved position.

Further, in the above embodiment, a case has been described in which a constant force spring 15 is used to elastically bias the slide 7 in the vertical direction, but the present invention is not limited to this. A mainspring spring having a characteristic diagram shown in the figure may also be used, and in this case, a mainspring spring that is designed to utilize the substantially constant load region of the diagram is incorporated into the hinge.

As explained above, the hinge of the present invention includes a main body member attached to a first attaching body, a movable member attached to a second attaching body that opens and closes with respect to the first attaching body, and a movable member attached to the main body member vertically. a slider that is movably fitted into a fitting portion formed along the direction and to which the movable member is pivotally attached; Since the slider is provided with a constant force spring that supports the slider at an arbitrary movement position of the main body member, the slider can be moved vertically with respect to the main body member and stopped at an arbitrary position, and therefore the slider is pivotally connected to the slider. The pivot point of the movable member can also be moved and stopped at any position in the vertical direction.

For this reason, for example, when the hinge of the present invention is used to support the opening/closing lid of a copying machine, the pivot point can move in the vertical direction, and the opening/closing lid can follow even if the thickness of the book or document to be copied differs. Therefore, the copy can be properly covered with an opening/closing lid that follows the thickness of the copy, preventing leakage of copy light and maintaining the quality of the copy image.

Further, it has the advantage that copying operations corresponding to the thickness of the copies can be carried out extremely efficiently, and even the copying of a large number of copies can be efficiently processed.

[Brief explanation of drawings]

1 to 5 show an embodiment of the present invention, in which FIG. 1 is a perspective view, FIG. 2 is an exploded perspective view, FIGS. 3 and 4 are a side sectional view showing the state of use, and FIG. Figure 5 is a diagram showing the elongation of the constant force spring on the horizontal axis and the load of the constant force spring on the vertical axis. Figure 6 shows the characteristics of the mainspring spring used as the constant force spring of the present invention. It is a corresponding diagram. 1... Main body member, 4... Movable member, 7
. . . Slider, 8 . . . Fitting portion of main body member, 15 . . . Constant force spring.

Claims (1)

[Scope of utility model registration request] A main body member attached to a first attaching body, a movable member attached to a second attaching body that opens and closes with respect to the first attaching body, and a fitting portion formed on the main body member along the longitudinal direction thereof. a slider that is movably fitted and to which the movable member is pivotally attached; a constant force spring that is interposed between the slider and the main body member and supports the slider at an arbitrary movement position of the fitted portion of the main body member; A hinge characterized by comprising: