US 11,868,080 B2
Open and close detection device and image forming apparatus
Hideaki Kadowaki, Osaka (JP)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
Filed on Oct. 5, 2022, as Appl. No. 17/960,732.
Claims priority of application No. 2021-165305 (JP), filed on Oct. 7, 2021.
Prior Publication US 2023/0113161 A1, Apr. 13, 2023
Int. Cl. G03G 21/00 (2006.01); G03G 21/16 (2006.01)
CPC G03G 21/1633 (2013.01) [G03G 2215/0078 (2013.01); G03G 2221/1687 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An open and close detection device which detects an open and close state of a first open and close member and a second open and close member provided to be openable and closable in directions orthogonal to each other, the open and close detection device comprising:
a detection switch;
a moving member including a first contact surface and a second contact surface arranged in directions orthogonal to each other;
a holding member which holds the moving member to be movable within a planar area including an initial position at which the detection switch is not pressed, and a detection position at which the detection switch is pressed to present a detection state;
a first lever which includes a first contact guide section opposed to the first contact surface, and is displaced in association with an opening and closing operation of the first open and close member;
a second lever which includes a second contact guide section opposed to the second contact surface, and is displaced in association with an opening and closing operation of the second open and close member; and
a biasing member which biases the moving member in a direction from the detection position toward the initial position, and brings the first contact surface into contact with the first contact guide section, and also brings the second contact surface into contact with the second contact guide section, wherein:
the first lever presses, in accordance with the closing operation of the first open and close member, the first contact surface by the first contact guide section, thereby moving the moving member in a first direction, and when the second lever is to move the moving member, guides the moving member in a second direction orthogonal to the first direction by the first contact guide section;
the second lever presses, in accordance with the closing operation of the second open and close member, the second contact surface by the second contact guide section, thereby moving the moving member in the second direction, and when the first lever is to move the moving member, guides the moving member in the first direction by the second contact guide section; and
when the first open and close member and the second open and close member are both in the close state, the moving member is moved to the detection position and the detection switch presents the detection state.