JPH0636626Y2 - Switchgear - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial technical field) The present invention relates to an apparatus for opening and closing an upper housing unit, such as a facsimile machine, in which an upper housing unit and a lower housing unit are connected by a hinge.

(Prior Art) In some facsimile machines and the like, an upper housing unit and a lower housing unit are joined by a hinge, and the upper housing unit is opened and closed to operate the facsimile machine.

FIG. 3 and FIG. 4 show the above-mentioned model of the conventional facsimile apparatus, and FIG. 3 (1) shows the upper casing unit 1.
Is a side view of the lower case unit opened from the lower housing unit, and FIG.

An example of this opening / closing mechanism is a side view of FIG. As shown in the figure, the upper housing unit 1 uses the hinge 3 as a spindle.
Rotates in the direction of the arrow, and one end of the link support member 4 is rotatably supported by one end of the upper housing unit about the fulcrum shaft 5 as a fulcrum. Further, the other end of the link support member 4 has a roller 6 so that the sliding surface 2a of the lower housing unit 2 slides, and the stopper 7 is provided substantially at the center of the length of the sliding surface.
Is provided. These opening / closing mechanisms are usually provided on one or both inner surfaces.

When the upper housing unit is opened, the fulcrum (fulcrum shaft 5) of the link support member 4 is pulled up, the roller 6 rolls on the sliding surface 2a of the lower housing unit 2, and after passing over the stopper 7, the roller 2 Is locked to the stopper 7 as shown in the figure, and the open state is maintained.

Further, when closing the upper housing unit 1, the roller 6 is lifted by hand, the stopper 7 is passed over, the upper housing unit is held while being lowered, and the roller 6 rolls on the sliding surface 2a of the lower housing unit. However, the link support member 4 also gradually falls and is eventually closed.

With such a structure, when closing the upper housing unit, the upper housing unit and the lower housing unit are impacted unless the upper housing unit is closed while holding the upper housing unit by hand, and the electronic parts and mechanical parts in both units are closed. There was a risk of damaging the etc.
In addition, there is a possibility that it may be accidentally closed naturally, and in such a case, there is a concern that it may be damaged.

(Problems to be Solved by the Invention) As described above, when closing the upper housing unit, there is a concern that the unit may be damaged because it is not a mechanism that can be performed with a gentle shock.

An object of the present invention is to solve the conventional drawbacks by performing a gentle operation when opening and closing the upper housing unit, particularly when closing the upper housing unit.

(Structure and operation) In order to achieve the above object, the present invention provides a device in which an upper housing unit and a lower housing unit are connected by a hinge, and the upper housing unit opens and closes. When closing the body unit, one end of the elastic member that exhibits constant stress is locked to one end of one of the upper housing unit or the lower housing unit, and a linear member is provided at the other end of the elastic member. The linear member is locked to a sliding end of a link support member which is locked to a substantially central portion of one unit via a guide member provided in the one unit.

According to the present invention, when the upper casing unit is closed, a constant stress is exerted by the elastic member stretched between the one unit and the link supporting member, so that the upper casing unit is rapidly lowered. It has a cushioning mechanism that gently moves down and closes without colliding with the body unit.

(Embodiment) FIG. 1 shows a side view of an embodiment of the present invention, and the same reference numerals as those in FIG. 4 are the same. The present invention has a spring 8 having a constant elastic stress as shown in the drawing, and one end 8a thereof is provided.
Pulley that locks the upper housing unit, connects the thin wire 9 to the other end, and constitutes a wire guide member.
10 is provided in the upper housing unit, and the other end 9a of the wire is locked to the link support member 4.

These opening / closing buffer mechanisms are usually provided on one or both inner surfaces, and when closing the upper housing unit 1,
As the roller 6 of the link support member 4 rolls on the sliding surface 2a in the arrow direction, the spring 8 is stretched and stretched, but at the same time, a constant stress is exhibited. That is, the upper housing unit closes toward the lower housing unit 2 while resisting the closing force while functioning to return the link support member 4 to the original position. For this reason, the spring is closed slowly without being closed abruptly due to the stress of the spring, so that there is an effect that no impact is given to the parts in the upper and lower housing units.

FIG. 2 is a side view of another embodiment of the present invention, in which the same reference numerals as those in FIG. 1 are the same. The figure (1) is a state diagram in which the upper housing unit is opened, and the figure (2) is a state diagram in which it is closed.

This embodiment is a pulley which is a guide member for the wire 9 shown in FIG.
Instead of 10, the guide support member 11 is mounted coaxially with the fulcrum shaft 5 of the link support member 4, and the guide support member 11 is fixed so as not to rotate.

With such a configuration, as the upper housing unit 1 is rotated in the direction of the arrow (A), the roller 6 rolls in the direction of the arrow (B), the center of gravity of the upper housing unit 1 moves to the left, and the acceleration is accelerated. Also, the speed of closing will be increased. However, although the spring 8 is stretched by being stretched in the direction of the arrow (C), at the same time, a constant stress is exhibited. Further, the wire 9 has a larger wrapping angle with respect to the guide member 11 (for example, polyacetal or the like) having wear resistance, so that the contact length increases. That is, a constant frictional force is also generated here, and the upper housing unit 1 is slowly closed from the state shown in FIG. 1 to the state shown in FIG.

In the state of (1) in which the upper housing unit is opened, at a certain angle or more (the center of gravity moves to the right),
Can be a free stop.

In each of the above embodiments, the structure in which the cushioning mechanism such as the link support member 4, the spring 8 and the like is arranged between the upper and lower housing units is reversed, but the same operation is performed even if it is arranged between the lower and upper housing units. Of course,

(Effect of the Invention) As described above, according to the present invention, the elastic member such as the spring is arranged between the upper and lower housing units, and the elastic member causes the upper housing unit to be closed slowly without being suddenly closed. It operates so as not to damage the parts inside the upper and lower housing units.

Further, even if the operator puts his / her hand between the units, the buffer mechanism prevents damage and improves safety.

[Brief description of drawings]

FIG. 1 and FIG. 2 are diagrams of respective embodiments of the present invention, and FIGS. 3 and 4 are diagrams of an opening / closing mechanism of a conventional facsimile apparatus. 1 ... Upper housing unit, 2 ... Lower housing unit, 3
...... Hinges, 4 ... Link support members, 5 ... fulcrum shafts, 6 ...
… Roller, 8 …… Spring, 9 …… Wire, 10 ……
Pulley, 11 ... Guide member.

Claims (2)

[Scope of utility model registration request] 1. A device for connecting an upper housing unit and a lower housing unit with a hinge to open and close the upper housing unit, when closing the upper housing unit with the lower housing unit,
One end of an elastic member exhibiting a constant stress is locked to one end of one of the upper housing unit or the lower housing unit, and a linear member is provided at the other end of the elastic member. The opening / closing device is characterized in that the sliding end of the link support member, which is locked at substantially the center of one unit, is locked via a guide member provided on the one unit. 2. The opening / closing device according to claim 1, wherein the guide member of the linear member connected to the elastic member is constituted by a rotating member or a fixed member.