Booster lever unit

A booster lever unit comprising:

• a first lever pivotably supported by a predetermined object via a first pivotal shaft;
• a second lever pivotably supported by the predetermined object via a second pivotal shaft;
• and
• a linkage member that links the first lever and the second lever to each other, wherein
• a pivotal plane of the first lever and a pivotal plane of the second lever are parallel to each other,
• the first lever has;
• one end provided with an operation section, and
• another end provided with the first pivotal shaft,
• the first lever further has a first linker, the first linker being provided between the operation section and the first pivotal shaft and linked to the linkage member,
• the second lever has:
• one end provided with an action section, and
• another end provided with a second linker linked to the linkage member,
• the second pivotal shaft is provided between the action section and the second linker,
• the predetermined object is a controller of an electronic computer, and
• the action section acts on a guide member provided in a chassis of the electronic computer to insert and extract the controller.