Slide rail

A slide rail comprising:

• a fixed-side rail that is attached to a vehicle body;
• a movable-side rail that is slidably attached to the fixed-side rail;
• and
• a reinforcing structure that is configured to prevent detachment of the movable-side rail from the fixed-side rail,
• wherein the reinforcing structure includes a fixed-side engaging portion that is attached to the fixed-side rail, and a movable-side engaging portion that is attached to the movable-side rail, and the fixed-side engaging portion and the movable-side engaging portion are configured, while allowing sliding of the movable-side rail, to come in contact with each other due to an action by a large load in a detaching direction in which the movable-side engaging portion is raised that is input between the fixed-side rail and the movable-side rail, and to be engaged with each other to restrict movement of the movable-side rail in the detaching direction,
• wherein a contact surface, that comes in contact with the movable-side engaging portion, of the fixed-side engaging portion includes surface regions, the surface regions having mutually different height positions in the detaching direction and being provided side by side in a sliding direction,
• wherein the fixed-side engaging portion and the moveable-side engaging portion are configured such that distal end portions of the fixed-side engaging portion and the moveable-side engaging portion are hookingly engaged with each other by the input action of the large load in the detaching direction,
• wherein the distal end portion of the movable-side engaging portion is disposed at a position lower than the distal end portion of the fixed-side engaging portion,
• wherein the contact surface is configured such that a rear-side surface region of the contact surface is disposed at a position lower than a front-side surface region of the contact surface,
• wherein the front-side surface region of the contact surface and the rear-side surface region of the contact surface are continuously connected to each other via an inclined surface, and
• wherein the fixed-side engaging portion is bent at a position between the front-side surface region and the inclined surface, and the fixed-side engaging portion is bent at a position between the inclined surface and the rear-side surface region.