초록 ▼

Suspension for a sliding drawer having a channel-section outer rail, a channel-section intermediate rail nested within the channel of the outer rail and sliding on a linear bearing, and an inner channel-section rail nested within the channel of the intermediate rail and sliding relative to it on a l

Suspension for a sliding drawer having a channel-section outer rail, a channel-section intermediate rail nested within the channel of the outer rail and sliding on a linear bearing, and an inner channel-section rail nested within the channel of the intermediate rail and sliding relative to it on a linear bearing. A flexible latch latches the inner rail to the intermediate rail during initial opening movement of the suspension so that the nested inner and intermediate rails reinforce one another and provide a stronger support. The latching also synchronizes the movements of the rails on opposite sides of the drawer and reduces problems associated with displacements of the bearings on opposite sides of the drawer.

대표청구항 ▼

A three-part sliding drawer suspension comprising outer, intermediate and inner channel-section rails each having channel sides and a channel bottom, outer and inner ball bearings each having a channel-section ball bearing cage having channel sides and a channel bottom between the outer and intermed

A three-part sliding drawer suspension comprising outer, intermediate and inner channel-section rails each having channel sides and a channel bottom, outer and inner ball bearings each having a channel-section ball bearing cage having channel sides and a channel bottom between the outer and intermediate rails and between the intermediate and inner rails respectively; extension of the intermediate rail relative to the outer rail being limited by engagement of the end surfaces of the outer cage between a stop on the rear of the intermediate rail and a stop on the front of the outer rail, and retraction of the intermediate rail relative to the outer rail being limited by engagement of its rear stop with a stop on the rear of the outer rail; extension of the inner rail relative to the intermediate rail being limited by engagement of the end surfaces of the inner cage between a stop on the rear of the inner rail and a stop on the front of the intermediate rail, and retraction of the inner rail relative to the intermediate rail being limited by engagement of a stop on the front of the inner rail with the front stop on the intermediate rail; the cages being normally positioned so that the end surfaces of each cage are spaced at equal distances from the stop surfaces which they engage; abutment members on the outer rail and on the intermediate rail arranged for a small clearance between them and the rear and front ends of the outer bearing cage when in the normal position with the intermediate rail retracted relative to the outer rail, and for engaging an end of the outer cage when displaced forwardly or rearwardly from its normal position and for shifting the outer cage to its normal position on closing movement of the suspension; and an abutment member on the inner rail arranged for a small clearance between it and the front end of the inner bearing cage when in its normal position with the inner rail retracted relative to the intermediate rail, for engaging the front end of the inner cage when displaced forwardly from its normal position and for shifting the inner cage to its normal position on closing movement of the suspension; said abutment members on the outer and inner rails comprising tabs struck from the channel sides of the outer and inner rails for engaging the channel sides of the outer and inner cages, respectively, and the abutment member on the intermediate rail comprising a tab struck from the channel bottom of the intermediate rail for engaging the channel bottom of the outer cage.