Drawer lock device for sheet storage section and image forming apparatus equipped with same

Abstract

To provide a drawer lock device for a sheet storage part which can easily realize the drawer lock device for the sheet storage part with a simple configuration and an image forming device having the same.SOLUTION: In a state where both of two adjacent sheet storage parts 111 and 112 are located at a storage position of an image forming device body 101, when an abutting part 212 is brought into contact with one of the sheet storage parts 111 and 112, a lock member 210 of a drawer lock device 200 rotates around a rotational axis α and a lock part 213 moves to an unlocked position allowing the movement of the other sheet storage part 112 or 111 in a drawing direction S1; on the other hand, when the other sheet storage part is located at the storage position and one of the sheet storage parts is drawn from the storage position in the drawing direction S1 and an abutment between the one sheet storage part and the abutting part 212 is released, the lock member rotates around the rotation axis α, and the lock part 213 moves to a lock position where the movement of the other sheet storage part in the drawing direction S1 is prohibited.SELECTED DRAWING: Figure 4A

Claims

1. A drawer lock device provided in an image forming apparatus main body that allows a sheet storage unit to be pulled out in a predetermined pull-out direction, the sheet storage unit is capable of stacking a plurality of sheets, and is arranged in a vertical direction in the image forming apparatus body in a plurality of units; The drawer locking device includes a main body that is rotatably attached to the image forming apparatus main body about a rotation axis, a rotation part that supports the main body rotatably about the rotation axis, and a locking member that includes a contact part and a lock part, When two adjacent sheet storage units among the plurality of sheet storage units are both in storage positions of the image forming apparatus main body, the locking member rotates about the rotation axis when the abutting portion abuts against one of the sheet storage units, and the locking portion moves to an unlocked position that allows the other sheet storage unit to move in the pull-out direction, while when the other sheet accommodating portion is in the accommodating position and the one sheet accommodating portion is pulled out from the accommodating position in the pull-out direction and the abutment between the one sheet accommodating portion and the abutment portion is released, the one sheet accommodating portion rotates about the rotation axis and the lock portion moves to a lock position that prohibits the other sheet accommodating portion from moving in the pull-out direction, the contact portion has a first contact surface that contacts the one of the sheet storage portions, The first contact surface is inclined so that a side opposite to the drawing direction protrudes toward the one of the sheet storage portions.

2. A drawer lock device provided in an image forming apparatus body that allows a sheet storage section to be pulled out in a predetermined pull-out direction, the sheet storage unit is capable of stacking a plurality of sheets, and is arranged in a vertical direction in the image forming apparatus body in a plurality of units; The drawer locking device includes a main body that is rotatably attached to the image forming apparatus main body about a rotation axis, a rotation part that supports the main body rotatably about the rotation axis, and a locking member that includes a contact part and a lock part, When two adjacent sheet storage units among the plurality of sheet storage units are both in storage positions of the image forming apparatus main body, the locking member rotates about the rotation axis when the abutting portion abuts against one of the sheet storage units, and the locking portion moves to an unlocked position that allows the other sheet storage unit to move in the pull-out direction, while when the other sheet accommodating portion is in the accommodating position and the one sheet accommodating portion is pulled out from the accommodating position in the pull-out direction and the abutment between the one sheet accommodating portion and the abutment portion is released, the one sheet accommodating portion rotates about the rotation axis and the lock portion moves to a lock position that prohibits the other sheet accommodating portion from moving in the pull-out direction, A pull-out locking device for a sheet storage section, characterized in that the locking portion is arranged to protrude from the main body toward the other sheet storage portion, and a locking surface is provided at the end of the locking portion opposite the pull-out direction to abut against the other sheet storage portion thereby preventing movement in the pull-out direction.

3. A drawer lock device provided in an image forming apparatus body that can draw out a sheet storage section in a predetermined drawing direction, the sheet storage unit is capable of stacking a plurality of sheets, and is arranged in a vertical direction in the image forming apparatus body in a plurality of units; The drawer locking device includes a main body that is rotatably attached to the image forming apparatus main body about a rotation axis, a rotation part that supports the main body rotatably about the rotation axis, and a locking member that includes a contact part and a lock part, When two adjacent sheet storage units among the plurality of sheet storage units are both in storage positions of the image forming apparatus main body, the locking member rotates about the rotation axis when the abutting portion abuts against one of the sheet storage units, and the locking portion moves to an unlocked position that allows the other sheet storage unit to move in the pull-out direction, while when the other sheet accommodating portion is in the accommodating position and the one sheet accommodating portion is pulled out from the accommodating position in the pull-out direction and the abutment between the one sheet accommodating portion and the abutment portion is released, the one sheet accommodating portion rotates about the rotation axis and the lock portion moves to a lock position that prohibits the other sheet accommodating portion from moving in the pull-out direction, A sheet storage unit withdrawal lock device characterized in that the locking member is provided on a rear side frame of the image forming device main body, which is positioned corresponding to the ends of the multiple sheet storage units stored in the image forming device main body on the opposite side to the withdrawal direction.

4. A drawer lock device provided in an image forming apparatus body that allows a sheet storage section to be pulled out in a predetermined pull-out direction, the sheet storage unit is capable of stacking a plurality of sheets, and is arranged in a vertical direction in the image forming apparatus body in a plurality of units; The drawer locking device includes a main body that is rotatably attached to the image forming apparatus main body about a rotation axis, a rotation part that supports the main body rotatably about the rotation axis, and a locking member that includes a contact part and a lock part, When two adjacent sheet storage units among the plurality of sheet storage units are both in storage positions of the image forming apparatus main body, the locking member rotates about the rotation axis when the abutting portion abuts against one of the sheet storage units, and the locking portion moves to an unlocked position that allows the other sheet storage unit to move in the pull-out direction, while when the other sheet accommodating portion is in the accommodating position and the one sheet accommodating portion is pulled out from the accommodating position in the pull-out direction and the abutment between the one sheet accommodating portion and the abutment portion is released, the one sheet accommodating portion rotates about the rotation axis and the lock portion moves to a lock position that prohibits the other sheet accommodating portion from moving in the pull-out direction, A sheet storage unit withdrawal lock device characterized in that the locking member is provided on a side frame of the image forming device main body that is positioned at a position corresponding to the side portions along the withdrawal direction of the multiple sheet storage units stored in the image forming device main body.

5. The drawer lock device for a sheet storage unit according to any one of claims 1 to 4, A sheet storage unit withdrawal locking device, characterized in that the abutment portion is provided at one end of the main body, and the locking portion is provided on the other end side of the main body opposite the abutment portion so that the rotating portion is positioned therebetween.

6. The drawer lock device for a sheet storage unit according to claim 5, the main body is attached to the image forming apparatus main body such that, when the abutting portion abuts against a lower one of the adjacent sheet accommodating portions, the rotating portion is located closer to the locking portion than a center of gravity of the locking member; a locking device for locking a drawer of a sheet storage unit, the locking device being attached to the image forming apparatus main body so that when the abutment portion abuts against the upper sheet storage unit among the adjacent sheet storage units, the pivot portion is positioned on the abutment portion side relative to the center of gravity of the locking member.

7. The drawer lock device for a sheet storage portion according to claim 5 or 6, a locking member that, when both of the two adjacent sheet storage sections are housed in the image forming device body, abuts against one of the sheet storage sections while protruding from one of the pull-out paths of the one of the sheet storage sections in the image forming device body and rotates to the unlocked position, thereby causing the locking member to retreat from the other pull-out path of the other sheet storage section in the image forming device body and allow the other sheet storage section to move in the pull-out direction; and, when the other sheet storage section is housed in the image forming device body and the one of the sheet storage sections is pulled out from the image forming device body, the abutment of the abutment portion with the one of the sheet storage sections in the one pull-out path is released and the locking member rotates to the locked position, thereby causing the locking portion to protrude into the other pull-out path and prohibit the movement of the other sheet storage section in the pull-out direction.

8. The drawer lock device for a sheet storage unit according to any one of claims 1 to 7, A sheet storage unit withdrawal locking device, characterized in that a second abutment surface is provided on a side end portion of the locking portion in the withdrawal direction, the second abutment surface being inclined in the direction away from the other sheet storage unit toward the withdrawal direction.

9. The drawer lock device for a sheet storage unit according to any one of claims 1 to 8, The main body includes a base portion along both the juxtaposition direction and the orthogonal direction perpendicular to both the juxtaposition direction and the pull-out direction of the plurality of sheet storage portions, and a first planar portion connected to the base portion so as to be aligned along both the pull-out direction and the orthogonal direction, The device for locking a sheet storage unit from being pulled out, wherein the contact portion is formed by bending the first flat portion along the perpendicular direction.

10. The drawer lock device for a sheet storage unit according to any one of claims 1 to 8, The main body includes a base portion along both the juxtaposition direction and the orthogonal direction perpendicular to both the juxtaposition direction and the pull-out direction of the plurality of sheet storage portions, and a first planar portion connected to the base portion so as to be aligned along both the pull-out direction and the orthogonal direction, A withdrawal lock device for a sheet storage section, characterized in that the abutment portion is bent from the first planar portion along the withdrawal direction, and further bent along an inclined direction that intersects both the parallel arrangement direction and the withdrawal direction.

11. The drawer lock device for a sheet storage unit according to any one of claims 1 to 10, The main body includes a base portion along both the juxtaposition direction and the orthogonal direction perpendicular to both the juxtaposition direction and the pull-out direction of the plurality of sheet storage portions, and a second planar portion connected to the base portion so as to be aligned along both the pull-out direction and the orthogonal direction, The locking portion is formed by bending the second flat portion along the drawing direction.

12. The drawer lock device for a sheet storage unit according to any one of claims 1 to 10, The main body includes a base portion along both the juxtaposition direction and the orthogonal direction perpendicular to both the juxtaposition direction and the pull-out direction of the plurality of sheet storage portions, and a second planar portion connected to the base portion so as to be aligned along both the pull-out direction and the orthogonal direction, The locking portion is bent from the second flat portion along the drawing direction, and further bent along the juxtaposition direction.

13. The drawer lock device for a sheet storage unit according to any one of claims 1 to 12, A sheet storage section withdrawal lock device, characterized in that the locking member is provided between a first sheet storage section that is located at the highest position among the plurality of sheet storage sections and a second sheet storage section that is located at the second highest position.

14. An image forming apparatus in which a sheet storage unit can be pulled out in a predetermined pulling direction relative to an image forming apparatus main body, A sheet storage unit according to any one of claims 1 to 13, The drawer locking device includes a pair of the locking members, Of the pair of locking members, One locking member is When both of the two adjacent sheet storage units are stored in the image forming apparatus main body, the abutment portion abuts against one of the sheet storage units and rotates, and the lock portion moves to the unlocked position that allows the other sheet storage unit to move in the pull-out direction, while when the other sheet storage unit is stored in the image forming apparatus body and the one sheet storage unit is pulled out from the image forming apparatus body and the contact between the one sheet storage unit and the contact unit is released, the lock unit moves to the lock position that prohibits the other sheet storage unit from moving in the pull-out direction, the other locking member, when both of the two adjacent sheet storage units are stored in the image forming apparatus main body, rotates while the abutment portion abuts against the other sheet storage unit, and moves to the unlocked position where the locking portion allows the one sheet storage unit to move in the pull-out direction; An image forming device characterized in that, when one of the sheet storage sections is stored in the image forming device main body and the other sheet storage section is pulled out from the image forming device main body and the abutment portion is released from the abutment with the other sheet storage section, the locking portion moves to the locking position which prohibits movement of the one of the sheet storage sections in the pulling-out direction.

15. 15. The image forming apparatus according to claim 14, The one locking member and the other locking member are formed in the same shape, an image forming apparatus, characterized in that the one locking member and the other locking member are rotatably mounted around the rotation axis with respect to the image forming apparatus main body so that the abutment portion and the locking portion are in opposite positions.

Images