Patent ID: 8858082

Claim:
A circulation maintaining device for a linear slide assembly, wherein the circulation maintaining device is adapted to be connected to a slider to form a slider assembly, the slider assembly is movably mounted to a rail, a top hole and a bottom hole are defined on each of two sides of the slider, and two grooves are respectively defined on two insides of the slider, the circulation maintaining device comprising: two top boards, each top board having a top maintaining plate on each of two sides thereof, a first half separation plate connected to each top maintaining plate, a first half tube extending from each first half separation plate, the first half tube inserted into a top half circle of the top hole corresponding thereto; four half mediate plates each having a second half separation plate, a second half tube and a half maintaining plate respectively extending from each of two sides of each of the second half separation plates, the half maintaining plate having a stop and a recessed area defined in outside thereof which faces the second half tube, the half maintaining plate having a rib located corresponding to the groove of the slider, wherein two of the second half tubes of the half mediate plates located at the same side of the slider respectively inserted into a bottom half circle of the top hole and a top half circle of the bottom hole from opposite ends of the slider, and two half maintaining plates corresponding to the two second half tubes engaged with each other by the stops and recessed areas, so that the four half mediate plates are connected in pairs; two of the third half tubes each being inserted into a bottom half circle of the bottom hole corresponding thereto; two bottom boards each having a bottom maintaining plate and two of the third half separation plates on two ends of the bottom maintaining plate, the two bottom boards connected to bottom of the two sides of the slider; two end caps connected to two ends of the slider and each end cap having two of the fourth half separation plates on two sides thereof; and the second half tubes and the first half tubes forming unloaded paths in the top holes of the slider, the second half tubes and the third half tubes forming unloaded paths in the bottom holes of the slider, the fourth half separation plates, the first half separation plates, the second half separation plates and the third half separation plates forming turning paths which are located corresponding to the unloaded paths, loaded paths being defined among the slider, the top maintaining plates, the half maintaining plates, the bottom maintaining plates and the rail, the loaded paths located corresponding to the unloaded paths, the unloaded paths, the turning paths and the loaded paths forming an enclosed circulation path.