Safety bar mechanism and sheet processing device having a safety bar mechanism
AssigneeFujitsu Limited
InventorTatsuhiro Taniwa
Life of this patent
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Abstract
A safety bar mechanism and sheet processing device having a safety bar mechanism, with which such an accident that the operator's hand is pinched between a table and peripheral devices etc. can be positively avoided whatever direction an external force exerts. The safety bar mechanism is disposed, for example, above the table on which a sheet is stacked, and comprises detector means the upper end of which is supported on a fixed part such that the detector means pivots freely in forward/backward directions and has play in upward/downward directions. When an external force works on the detector means, thereby moving the detector means upwards, forwards or backwards, a switching means is so operated as to at least stop the upward movement of the table.
Claims33
A safety bar mechanism comprising:
- detector means for sensing an external force applied to a safety bar wherein said detector means, having respective upper ends, is held by a fixed part as to be movable in at least forwards, backwards and upwards directions from a normal position and wherein said detector means comprises upper forked ends;
- and
- switching means for detecting movement of the detector means from a normal position, caused by the effect of said external force and wherein each respective upper forked end of the detector means is supported on the fixed part so as to be movable in an upward direction with respect to when the detector means is at the normal position.
A sheet processing device comprising:
- (a) a stacker mechanism comprising a folding mechanism for folding a continuous sheet:
- a table on which the continuous sheet folded by the folding mechanism is stacked;
- a cover for covering a front face of the folding mechanism;
- and a table driving means for moving the table between a folding position where the table is located in the vicinity of a lower edge of the cover and a taking-out position where the continuous sheet stacked on the table is taken out;
- and
- (b) a safety bar mechanism comprising detector means for sensing an external force applied to a safety bar wherein said detector means, having respective upper ends, is disposed in the vicinity of the lower edge of the cover and so held on a fixed part as to be movable in at least forwards, backwards and upwards directions from a normal position;
- and switching means for detecting that the detector means has been moved from a normal position caused by the effect of the external force wherein said detector means comprises respective forked upper ends supported on the fixed part so as to be movable in an upward direction with respect to when the detector means is at the normal position.
Dependencies are inferred from the claim text.