Slider of linear guideway

Abstract

The present invention relates to a slider of linear guideway which includes the sliding-block, the end-cup and the ball retainer. The characteristic of this present invention is that the ball retainer doesn't use the screws for firm, therefore can scant the finished cost and the fabricated time. Besides, the ball retainer can provide the force to support between two ends of the ball retainer, thereby can increase the strength of the ball retainer to avoid changing the shape.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a slider of linear guideway, the linear guideway is precision-controlled linear guiding mechanism, which is widely applied to automatic equipments, industrial mechanism, mechanical arms, measuring instruments and electronics. [0003] 2. Description of the Prior Arts [0004] Many machines are provided with linear guiding mechanism, linear guideway is a linear guiding mechanism. And a slider for conventional linear guideway as shown in FIG. 6, which generally comprises a sliding block 50 and end-cup 80. Retaining plate 60 serves to retain the balls to the sliding block 50, and the retaining plate 60 contacts against an outer side of the balls so as to prevent the disengagement of the balls from the sliding block 50. The retaining plate 60 is fixed to the sliding block 50 by virtue of screws 70, accordingly plural threaded holes 51 should be defined on the sliding block 50 and the retaini...

AI Technical Summary

Benefits of technology

[0008] The primary object of the present invention is to provide a screw-less ball-retaining device for slider of a linear guideway, the sliding block is low cost and easy-and-quick assembled, and the geometry strength of the ball retainer on the sliding block is increased so as to prevent the deformation.

[0009] To achieve the above-mentioned object, the ball retainer on slider of the linear guideway in accordance with the present invention is screw-less assembled to the slider by cooperation with the end-cup. Wherein the ball retainer is provided with tongue structure to insert in notch of the end-cup, such that the ball retainer is easy-and-quick assembled, so as to enhance the assembly efficiency of the slider. Due to screw-less structure, the sliding block doesn't need to be defined with threaded holes, and thus the production cost and assembly time of the slider is relatively reduced.

[0010] Furthermore, in consideration of long-sized slider of linear guideway, the corresponding slenderness ratio is high and it is susceptible to deformation, to overcome this, other portion on the ball retainer in accordance with the present invention, besides the both ends, can provide support strength for the ball retainer. Thus the geometry strength of the ball retainer on the sliding block is increased so as to prevent the deformation.

[0011] In addition, the ball retainer in accordance with the present invention can be made by plastic ejection molding, so as not only to reduce the noise caused by metal-collision while prolonging the service life, but also to reduce the production cost of the entire linear guideway and overcome the problem that the precision is difficult to be controlled.

Problems solved by technology

However, the noise will be caused when the balls roll on the metal-made retaining plate 60, and the service life of the ball will be substantially reduced, furthermore, since the precision reproduction of the punching and folding processes is not good, the forming of the retaining curve surface 62 for retaining balls on the retaining plate 60 is difficult and its precision cannot be controlled easily, it is susceptible to interference.

Moreover, the conventional sliding block 50 should be additionally provided with a screwing process for forming the threaded holes 51, thereby the production cost is relatively increased.

And the screws 70 will probably cause deformation of the retaining plate 60 during assembly, and also it is time-consuming and laborsome to assemble and disassemble the retaining plate 60.

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