Abstract: A simple, compact and easy-to-assemble slide rail unit is provided. The slide rail unit reliably restrains right and left rails from sliding even when the right and left rails are installed onto the vehicle floor at an inclination angle different from each other in a longitudinal direction thereof. The slide rail unit includes a slide rail member having an upper rail member and an upper rail member slidably engaged with each other and a lock lever rotatably pivoted to the upper rail member so as to engage with/disengage from an engagement portion formed on the lower rail member. The slide rail unit also includes an operation lever connected to the lock lever within the slide rail member. Between the lock lever and the operation lever, a leaf spring member is disposed for connecting the lock lever and the operation lever therebetween.

Abstract: An object of the invention is to provide a seat rail apparatus, which is capable of locking/unlocking forward/backward sliding of a seat for vehicle in a stepless manner with a simple structure, at an inexpensive cost. A brake disk 51 is attached to the front end of a slide screw 5, which is screwed with a nut 4 disposed within a lower rail 2 and an upper rail 3. A lock mechanism 6 comprises rollers 63 and 64, springs 65 for imparting a force to the rollers in the peripheral direction and a supporting member 61 disposed with the rollers and the springs therein. The springs 65 impart a force to the brake disk 51 and the supporting member 61 to bring the rollers 63 and 64 into a friction engagement; thus the rotation of the slide screw 5 can be locked. Owing to first and second engagement plates 81 and 82, the rollers 63 and 64 are caused to roll against the force imparted by the springs 65, and are released from the friction engagement; thus the slide screw 5 can be unlocked.

Abstract: A simple, compact and easy-to-assemble slide rail unit is provided. The slide rail unit reliably restrains right and left rails from sliding even when the right and left rails are installed onto the vehicle floor at an inclination angle different from each other in a longitudinal direction thereof. The slide rail unit includes a slide rail member having an upper rail member and an upper rail member slidably engaged with each other and a lock lever rotatably pivoted to the upper rail member so as to engage with/disengage from an engagement portion formed on the lower rail member. The slide rail unit also includes an operation lever connected to the lock lever within the slide rail member. Between the lock lever and the operation lever, a leaf spring member is disposed for connecting the lock lever and the operation lever therebetween.

Abstract: A compact and lightweight round reclining apparatus having a neutral position return function of automatically returning and securing the backrest to the preset neutral position when the backrest that has been reclined forward is raised is provided. A memory plate in approximately disc form having a center shaft at its center and a spring member for pressing the memory plate so that the memory plate always rotates in one direction intervene between a base plate and a gear plate. A guide portion, which is a long hole in approximately arc form, for restricting the movement of the lock gear outward in the direction of the radius through contact with the protrusion of the above described lock gear is provided inside the disc of the memory plate, and at least one notch is provided in the outer periphery of the memory plate so that an engaging portion provided on the above described gear plate enters into the notch and the memory plate is rotatable relative to the gear plate within the range of the notch.

Abstract: A compact and lightweight round reclining apparatus having a neutral position return function of automatically returning and securing the backrest to the preset neutral position when the backrest that has been reclined forward is raised is provided. A memory plate in approximately disc form having a center shaft at its center and a spring member for pressing the memory plate so that the memory plate always rotates in one direction intervene between a base plate and a gear plate. A guide portion, which is a long hole in approximately arc form, for restricting the movement of the lock gear outward in the direction of the radius through contact with the protrusion of the above described lock gear is provided inside the disc of the memory plate, and at least one notch is provided in the outer periphery of the memory plate so that an engaging portion provided on the above described gear plate enters into the notch and the memory plate is rotatable relative to the gear plate within the range of the notch.

Abstract: [Problem] An object of the invention is to provide a seat rail apparatus, which is capable of locking/unlocking forward/backward sliding of a seat for vehicle in a stepless manner with a simple structure, at an inexpensive cost. [Solving means] A brake disk 51 is attached to the front end of a slide screw 5, which is screwed with a nut 4 disposed within a lower rail 2 and an upper rail 3. A lock mechanism 6 comprises rollers 63 and 64, springs 65 for imparting a force to the rollers in the peripheral direction and a supporting member 61 disposed with the rollers and the springs therein. The springs 65 impart a force to the brake disk 51 and the supporting member 61 to bring the rollers 63 and 64 into a friction engagement; thus the rotation of the slide screw 5 can be locked. Owing to first and second engagement plates 81 and 82, the rollers 63 and 64 are caused to roll against the force imparted by the springs 65, and are released from the friction engagement; thus the slide screw 5 can be unlocked.