Ball slide rail and assembly thereof

Abstract

The invention relates to a ball slide rail which comprises an inner slide rail, two outer slide rails respectively positioned on the outer sides of two inner rail ends of the inner slide rail along a vertical direction, two ball retainers positioned between the inner slide rail and the two outer slide rails, and ball rows positioned on the ball retainers in a rolling manner. Each outer sliding rail comprises a bottom wall extending in the transverse direction, a long wall part and a short wall part, wherein the long wall part and the short wall part are formed by integrally extending from the two sides of the bottom wall and extend in the vertical direction. Each ball row comprises a first ball row which is propped against and contacted with the short wall part, a second ball row which is propped against and contacted with the long wall part and a third ball row which is positioned below the second ball row, and the inner rail end comprises a first arc-shaped part which is propped against the first ball row; and the tail end of the first arc-shaped part extends along the vertical direction and then is transversely bent at an angle to form a tail part. And the tail part is transversely arranged so that the transverse anti-extrusion capability of the inner slide rail is improved.

Description

technical field [0001] The invention relates to a ball slide rail and its assembly, in particular to a concealed ball slide rail with strong lateral extrusion resistance and its assembly. Background technique [0002] Existing ball slide rails, such as the patent with the notification number CN103096756B discloses a pull guide device, the inner slide rail is supported in at least one outer slide rail by support balls parallel to the length direction, and the support balls are supported by The ball cage is limited to the length of the outer slide rail. Usually, this type of long ball slide rail has a relatively weak vertical bearing capacity because the length in the vertical direction is larger than the horizontal dimension. The uneven force on both sides of the slide rail causes the lateral torque of the ball slide rail to increase, which is easy to deform the middle part of the ball slide rail. At the same time, because the connecting section of the inner slide rail is a...

AI Technical Summary

Problems solved by technology

Usually, this type of long ball slide rail has a relatively weak vertical bearing capacity because the length in the vertical direction is larger than the horizontal dimension. The uneven force on both sides of the slide rail will increase the lateral torque of the ball slide rail, which is easy to deform the middle position of the ball slide rail.

At the same time, because the connecting section of the inner slide rail is a vertically extending flat plate structure, this part is often used for the support of the ball slide rail accessories, because there are many kinds of fixing structures, such as fixing screws, card slots, etc., so the overall intermediate structure is fragile

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