US 6,629,336 B2 · Original pressing plate hinge · patentgrep

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Abstract

In an original pressing plate hinge including a fixing member, an original pressing plate supporting member pivotably installed via a hinge pin to the fixing member, a slider slidably housed in the supporting member, a cam member fixed between the slider and the free end of the supporting member in contact with the slider, and a coil spring provided resiliently between the slider and the free end of the supporting member, the cam member is omitted to prevent an original or document set on the platen glass for copying or printing from being stained with or spoiled by a lubricant when the original touches the cam member to which the lubricant sticks, and instead a pressure receiving pin is used and a cam slider is used in place of the slider. To prevent a heavy original pressing plate from abruptly falling, a fluid damping member is housed in the coil spring and disposed between the cam slider and the top plate or free end of the supporting member.

Claims8

Dependent claims

An original pressing plate hinge, comprising:

a fixing member consisting of a base plate, which is to be fixed to the body of an object provided with an original pressing plate and on which the hinge is to be used, opposite lateral plates rising from opposite lateral sides of the base plate;
a supporting member to support the original pressing plate and which consists of a back plate, top plate formed by bending the back plate, opposite lateral plates, and holding plates formed by bending the opposite lateral plates, one end of each of the opposite lateral plates of the supporting member being pivotably installed via a hinge pin to outsides of the opposite side plates of the fixing member;
a cam slider having one end thereof formed as a cam-shaped portion and which is slidably held by holding plates of the supporting member and directed towards the fixing member;
a pressure receiving pin supported between the opposite lateral plates of the fixing member in contact with the cam portion of the cam slider;
a coil spring provided resiliently between the cam slider and the top plate of the supporting member;
slots formed on the opposite lateral plates for receiving the holding plates when the supporting member is closed;
and
a lifting member for attaching to the original pressing plate, pivoted to a free end of the supporting member.

5 more elements

An original pressing plate hinge, comprising:

a fixing member consisting of a base plate, which is to be fixed to the body of an object provided with an original pressing plate and on which the hinge is to be used, and opposite lateral plates rising from opposite lateral sides of the base plate;
a supporting member to support the original pressing plate and which consists of a back plate, top plate formed by bending the back plate and opposite lateral plates, one end of each of the opposite lateral plates of the supporting member being pivotably installed via a hinge pin to the opposite side plates of the fixing member;
a cam slider having one end thereof formed as a cam-shaped portion and which is slidably housed in the supporting member and directed towards the fixing member;
a pressure receiving pin supported between the opposite lateral plates of the fixing member in contact with the cam portion of the cam slider;
a coil spring provided resiliently between the cam slider and the free end of the supporting member;
and
a fluid damping member with a piston rod, removably inserted from the top plate of the supporting member into the coil spring, it being activated as a damper with the piston rod and caused to abut at the end thereof the cam slider when the supporting member is closed to a predetermined angular position as the original pressing plate is closed.

4 more elements

An original pressing plate hinge, comprising:

a fixing member consisting of a base plate, which is to be fixed to the body of an object provided with an original pressing plate and on which the hinge is to be used, and opposite lateral plates rising from opposite lateral sides of the base plate;
a supporting member to support the original pressing plate and which consists of a back plate, top plate formed by bending the back plate, and opposite lateral plates, one end of each of the opposite lateral plates of the supporting member being pivotably installed via a hinge pin to the opposite side plates of the fixing member;
a cam slider having one end thereof formed as a cam-shaped portion and which is slidably housed in the supporting member and directed towards the fixing member;
a pressure receiving pin being in contact with the cam portion of the cam slider and supported between the opposite lateral plates of the fixing member;
a coil spring provided resiliently between the cam slider and the free end of the supporting member;
and
a fluid damping member having a piston rod and inserted in the coil spring, it being activated as a damper with the piston rod caused to abut at the end thereof the cam slider when the supporting member is closed to a predetermined angular position as the original pressing plate is closed.

4 more elements

An original pressing plate hinge, comprising:

a fixing member consisting of a base plate, which is to be fixed to the body of an object provided with an original pressing plate and on which the hinge is to be used, and opposite lateral plates rising from opposite lateral sides of the base plate;
a supporting member to support the original pressing plate and which consists of a back plate, top plate formed by bending the back plate, and opposite lateral plates, one end of each of the opposite lateral plates of the supporting member being pivotably installed via a hinge pin to the opposite side plates of the fixing member;
a cam slider having one end thereof formed as a cam-shaped portion and which is slidably housed in the supporting member and directed towards the fixing member;
a pressure receiving pin supported between the opposite lateral plates of the fixing member in contact with the cam portion of the cam slider;
a coil spring provided resiliently between the cam slider and the top plate of the supporting member;
and
a fluid damping member with a piston rod and inserted in the coil spring, it being activated as a damper with the piston rod caused to abut at the end thereof the cam slider when the supporting member is closed to a predetermined angular position as the original pressing plate is closed.

4 more elements

An original pressing plate hinge, comprising:

a fixing member consisting of a base plate, which is to be fixed to the body of an object provided with an original pressing plate, and on which the hinge is to be used, and opposite lateral plates of the supporting member rising from opposite lateral sides of the base plate;
a supporting member to support the original pressing plate and which consists of a back plate, top plate formed by bending the back plate, and opposite lateral plates, one end of each of the opposite lateral plates of the supporting member being pivotably installed via a hinge pin to the opposite side plates of the fixing member;
a cam slider having one end thereof formed as a cam-shaped portion and which is slidably housed in the supporting member and directed towards the fixing member;
a pressure receiving pin supported between the opposite lateral plates of the fixing member in contact with the cam portion of the cam slider;
a coil spring provided resiliently between the cam slider and the free end of the supporting member;
and
a fluid damping member having a piston rod and inserted between the cam slider in the coil spring and the free end of the supporting member, it being activated as a damper with the piston rod caused to abut at the end thereof the cam slider when the supporting member is closed to a predetermined angular position as the original pressing plate is closed.

4 more elements

An original pressing plate hinge, comprising:

a fixing member consisting of a base plate, which is to be fixed to the body of an object provided with an original pressing plate and on which the hinge is to be used, and opposite lateral plates rising from opposite lateral sides of the base plate;
a supporting member to support the original pressing plate and which consists of a back plate, top plate formed by bending the back plate and opposite lateral plates, one end of each of the opposite lateral plates of the supporting member being pivotably installed via a hinge pin to the opposite side plates of the fixing member;
a cam slider having one end thereof formed as a cam-shaped portion and which is slidably housed in the supporting member and directed towards the fixing member;
a pressure receiving pin supported between the opposite lateral plates of the fixing member in contact with the cam portion of the cam slider;
a coil spring provided resiliently between the cam slider and the top plate of the supporting member;
and
a fluid damping member with a piston rod, inserted between the cam slider in the coil spring and the top plate of supporting member, it being activated as a damper with the piston rod caused to abut at the end thereof the cam slider when the supporting member is closed to a predetermined angular position as the original pressing plate is closed.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/174,704Filed 19 Jun 2002 · division
Priority: JP 10-35340911 Dec 1999
Published: US 2002/0152580 A124 Oct 2002
Granted: 7 Oct 2003
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

Family

Application09/456,578Parent of this division · filed 8 Dec 1999
US 2002/0152580 A1Pre-grant publication · published 24 Oct 2002
US 6,415,477 B1Parent of this division
US 6,629,336 B2This patent

From the US filing history. Foreign family members aren’t listed.

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Citations

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