Automatic original cover closer and office equipment including automatic original cover closer

1. An automatic original cover closer for an automatic opening and closing of an original cover with respect to a main body of an office equipment, said automatic original cover closer comprising:

hinge parts and a driving part to transfer a driving power to the hinge parts;

said hinge parts comprising:

a mounting member having a bottom plate and two side plates extending from both side portions of the bottom plate upward in the orthogonal direction to the bottom plate respectively and attached said bottom plate to an upper portion of the main body; and

a supporting member including a top plate and both side plates extending downward in a direction perpendicular to the top plate from both side portions of the top plate respectively, with said both side plates being axially supported via a rotary shaft on said both side plates of said mounting member so as to be rotatable with the rotary shaft;

said driving part comprising:

a drive case attached to said upper portion of the main body;

a positively and reversely rotatable drive motor attached to the drive case;

a drive shaft attached to said drive case so as to be rotatable; and

a power transferring mechanism attached to said drive case for decelerating and transferring a rotary driving power of said drive motor to said drive shaft;

wherein said rotary shaft and said drive shaft are coaxially connected with each other in an axial direction, so that the rotary driving power of said drive motor is transferred to said supporting member via said drive shaft and said rotary shaft.

2. The automatic original cover closer according to claim 1 , wherein, in coaxially connecting said rotary shaft and said drive shaft in the axial direction, either one of said rotary shaft and said drive shaft is formed in a deformed cylindrical shape so that the other shaft is inserted and fixed to the one shaft in the deformed cylindrical shape.

3. The automatic original cover closer according to claim 1 , wherein said drive motor is a pulse motor.

4. The automatic original cover closer according to claim 1 , wherein said hinge parts further comprise a lifting member having a top plate fixed to said original cover and two side plates extending downward from both end portions of the bottom plate in an orthogonal direction to the bottom plate respectively, with the side plates being axially supported on said side plates of said supporting member so as to be rotatable, and a resilient means to urge said lifting member in an opening direction of said original cover and said lifting member in a direction to be overlapped on said supporting member.

5. The automatic original cover closer according to claim 1 , wherein said driving part is further provided with an automatic rotary closing mechanism which automatically drives said drive motor, when the original cover is manually opened to a prescribed opening angle or less from a closed position.

6. The automatic original cover closer according to claim 1 , wherein the driving part is further so adjusted that, in automatically closing said original cover in a closing direction by driving said drive motor, said drive motor is switched off at a prescribed closing angle or less, and the closing movement of the original cover is then carried out manually or by its own weight.

7. An office equipment including the automatic original cover closer according to claim 1 .