Hinge with tandem pivot structure motion lock and override
First Claim
1. A hinge pivot and motion lock for tandemly coupled upper and lower pivoting functional units, comprising:
- a lower pivoting functional unit positionable between a first substantially horizontal position and a second non-horizontal position;
an upper pivoting functional unit positionable between a first substantially horizontal position and a second non-horizontal position;
a hinge assembly coupling the upper pivoting functional unit to the lower pivoting functional unit and including a gear member allowing at least pivotal movement of the upper pivoting functional unit relative to the lower pivoting functional unit; and
at least one gravity-actuated motion lock that engages the gear member to inhibit movement of the upper pivoting functional unit relative to the lower pivoting functional unit when the lower pivoting functional unit is in the second non-horizontal position and disengages from the gear member when the lower pivoting functional unit is positioned at the first substantially horizontal position.
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Accused Products
Abstract
An upper piggybacked unit of a tandem unit is provided with a hinge unit and at least one motion lock to prevent the upper unit from falling away from the lower unit when it is tandemly coupled to the lower unit and the lower unit is pivoted to a non-horizontal position. The motion lock may inhibit rotation and/or translation of the upper unit. The motion lock may also be self-actuating, such as a gravity dependent lock mechanism. A lock override mechanism may be provided to allow the lock to yield to excessive force without causing damage. The lock enable condition may be automatically reset after the override condition so that no special knowledge or action on the part of the user is required to return the hinge to normal operation. The motion locks are particularly useful when provided on a reprographic device, such as a copier, facsimile, printer or malfunction device having an upper unit that forms a sheet feeder unit, a lower unit that forms a scan housing, and a fixed base below the lower unit that may contain a marking engine.
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Citations
19 Claims
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1. A hinge pivot and motion lock for tandemly coupled upper and lower pivoting functional units, comprising:
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a lower pivoting functional unit positionable between a first substantially horizontal position and a second non-horizontal position; an upper pivoting functional unit positionable between a first substantially horizontal position and a second non-horizontal position; a hinge assembly coupling the upper pivoting functional unit to the lower pivoting functional unit and including a gear member allowing at least pivotal movement of the upper pivoting functional unit relative to the lower pivoting functional unit; and at least one gravity-actuated motion lock that engages the gear member to inhibit movement of the upper pivoting functional unit relative to the lower pivoting functional unit when the lower pivoting functional unit is in the second non-horizontal position and disengages from the gear member when the lower pivoting functional unit is positioned at the first substantially horizontal position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A hinge pivot and motion lock for tandemly coupled upper and lower pivoting functional units, comprising:
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a lower pivoting functional unit positionable between a first substantially horizontal position and a second non-horizontal position; an upper pivoting functional unit positionable between a first substantially horizontal position and a second non-horizontal position; a hinge assembly coupling the upper pivoting functional unit to the lower pivoting functional unit and including a gear member allowing at least pivotal movement of the upper pivoting functional unit relative to the lower pivoting functional unit; and at least one gravity-actuated motion lock that engages the gear member to inhibit rotation of the upper pivoting functional unit relative to the lower pivoting functional unit when the lower pivoting functional unit is in the second non-horizontal position and disengages from the gear member when the lower pivoting functional unit is positioned at the first substantially horizontal position, wherein the at least one gravity-actuated motion lock is self-actuating and self-releasing by movement of the lower pivoting functional unit between the first and second positions.
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19. A hinge pivot and motion lock for tandemly coupled upper and lower pivoting functional units, comprising:
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a lower pivoting functional unit positionable between a first substantially horizontal position and a second non-horizontal position; an upper pivoting functional unit positionable between a first substantially horizontal position and a second non-horizontal position; a hinge assembly coupling the upper pivoting functional unit to the lower pivoting functional unit and including a gear member allowing at least pivotal movement of the upper pivoting functional unit relative to the lower pivoting functional unit; at least one gravity-actuated motion lock that engages the lower pivoting functional unit to inhibit translation of the upper pivoting functional unit relative to the lower pivoting functional unit when the lower pivoting functional unit is in the second non-horizontal position and disengages from the lower pivoting functional unit when the lower pivoting functional unit is positioned at the first substantially horizontal position; and the at least one gravity-actuated motion lock is self-actuating and self-releasing by movement of the lower pivoting functional unit between the first and second positions, wherein the lower pivoting functional unit includes an elevator slide mechanism having a first wall with at least one latch element and a body portion pivotally mounted for rotation about a pivot shaft and having an engagement portion, and when the lower pivoting functional unit is in the first horizontal position, the engagement portion is displaced from the latch element of the elevator slide mechanism, allowing free translational movement of the upper pivoting functional unit relative to the lower pivoting functional unit, and when the lower pivoting functional unit is moved to the second non-horizontal position, the engagement portion moves into contact with the at least one latch element of the elevator slide mechanism to inhibit translation of the upper pivoting functional unit relative to the lower pivoting functional unit.
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Specification