Slide rail device for jump seat

A slide rail device for a jump seat, in which the jump seat may be jumped up and rotated from the slide rail device to an inverted upstanding state at a storage area in an automobile, said slide rail device comprising:

• a lower rail means fixed in a floor of an automobile;
• an upper rail means slidably fitted in said lower rail means, said upper rail means having a hinge bracket provided thereon at one end thereof, wherein a seat cushion of said jump seat is rotatably mounted via said hinge bracket upon said upper rail means;
• said lower and upper rail means permitting said jump seat to be adjusted in position in a fore-and-aft direction of said automobile;
• said upper rail means having an upper horizontal section and a vertical slide section integrally extending downwardly from said upper horizontal section, wherein said vertical slide section is slidably fitted in and along said lower rail means and has a support area defined at one end portion thereof opposite to said hinge bracket;
• a locking mechanism for locking and unlocking said jump seat to and from said upper rail means, said locking including:
• a female engagement means which is provided at another end portion of said seat cushion of said jump seat such that, when the jump seat is rotated about said hinge bracket from said storage area to said lower rail means, said female engagement means is brought to a point corresponding to said support area associated with said upper rail means;
• a lock means having a male engagement portion;
• an actuator means operatively connected with said lock means;
• both said lock means and actuator means being rotatably mounted at said support area defined in said vertical slide section of said upper rail means, such that said actuator means normally retains said lock means at an unlocked position where said male engagement portion of said lock means is withdrawn in said lower rail means and disengaged from said female engagement means, and further, said actuator means, when pushed by said female engagement means, causes said lock means to rotate towards a locked position where said male engagement portion of said lock means projects from said upper rail means and engages said female engagement means;
• and
• a lever means movably provided at said horizontal section of said upper rail means, said lever means being operatively engaged with said lock means, wherein operation of said lever means permits said lock means to be rotated towards one of said unlocked and locked positions.