| 主权项 |
1. A rail installed at an object having a drawer accommodating section in which a drawer is accommodated and configured to pull or push the drawer out of or into the drawer accommodating section, the rail comprising:
a movable rail having an accommodating space formed therein, configured to bring the accommodating space in communication with the outside through an open surface, and fixed to a lower surface of the drawer; rolling bodies disposed in the accommodating space and installed at both corners opposite to each other in a diagonal direction of the movable rail, wherein the rolling bodies are composed of only two rows of balls disposed in a longitudinal direction of the movable rail at both corners opposite to each other in a diagonal direction of the movable rail, and the rolling bodies comprises a first rolling body being a first row, which is disposed at a lower side, of said two rows and a second rolling body being a second row, which is disposed at an upper side, of said two rows; and a fixed rail including a fixing section fixed to the drawer accommodating section, a ball support section disposed in the accommodating space and configured to support the rolling bodies, and a connecting section having one end connected to the ball support section and the other end pulled out of the accommodating space through the open surface and connected to the fixing section, wherein the connecting section is configured to have an angle within a range from 50 to 70 degrees with respect to the fixing section to prevent interference between the open surface and the connecting section even when the movable rail is pressed by the drawer; and wherein the ball support section further comprises: a first ball seating surface extending from the connecting section and in which the first rolling body is accommodated; a second ball seating surface in which the second rolling body is accommodated; a bending surface configured to connect the first ball seating surface and the second ball seating surface; and a seating surface supporter having an extension section extending from the second ball seating surface and a bending section formed by bending the extension section and in contact with an upper portion of the connecting section, wherein the first ball seating surface, the bending surface, the second ball seating surface, and the seating surface supporter are configured such that a cross-sectional shape of the ball support section forms a closed curve, and the first ball seating surface and the second ball seating surface are spaced a predetermined distance apart from each other by the extension section. |
