KR100613203B1 - Slider of linear guideway - Google Patents

Abstract

The present invention relates to a slider of a linear guideway comprising a slide block, an end cup and a ball retainer. It is a feature of the present invention that the ball retainer does not use coupling screws, thus reducing the finishing cost and manufacturing time. In addition, the ball retainer can provide support between both ends of the ball retainer, thereby increasing the strength of the ball retainer to prevent the shape from changing.

Slide Block, End Cup, Ball Retainer, Linear Guideway, Slider

Description

Slider of linear guideway {SLIDER OF LINEAR GUIDEWAY}

1 is an exploded view of a slider according to one aspect of the present invention.

Figure 2 is an enlarged view of the ball retainer of Figure 1;

3 is an enlarged view of the end cup of FIG.

4 is a perspective assembled view of the slider according to one aspect of the present invention;

5 is a cross-sectional view of the slide block and rail assembly according to one aspect of the present invention.

6 is a perspective view of a slider of a conventional linear guideway.

<Explanation of symbols for the main parts of the drawings>

10: slide block

11: registration surface

20: end cup

30: ball retainer

90: ball

The present invention relates to a slider of a linear guideway, wherein the linear guideway is a precisely controlled linear guide mechanism, which is widely applied to automation equipment, industrial machinery, mechanical arms, measuring instruments and electronic equipment.

Many machines are provided with a linear guide mechanism and the linear guideway is a linear guide mechanism. The slider for a conventional linear guideway shown in FIG. 6 typically comprises a slide block 50 and an end cup 80. The retaining plate 60 serves to retain the ball in the slide block 50, and the retaining plate 60 contacts the outer surface of the ball to prevent disengagement of the ball from the slide block 50. The retaining plate 60 is fixed to the slide block 50 by screws 70, so that a plurality of screw holes 51 should be formed on the slide block 50, and the same number of retaining plates 60 as well. The through hole 61 must be provided. Next, the screw 70 is inserted through the through hole 61 of the retaining plate 60 and screwed into the screw hole 51 of the slide block 50, so that the retaining plate 60 slides the slide block 50. It is fixed to).

The conventional slider uses screws 70 to fix the retaining plate 60, the retaining plate 60 is sufficiently hard, and the retaining plate 60 is usually made of metal, and is punched and folded. However, when the ball rolls on the metal holding plate 60, noise is generated, the life of the ball is substantially reduced, furthermore, the precision reproduction of the punching and folding processing worsens, and the ball is held on the holding plate 60. It is difficult to form the holding curve surface 62 for holding, and its precision cannot be easily controlled and is susceptible to interference. On the other hand, when the slide block 50 is relatively large, the slenderness ratio of the retaining plate 60 becomes too large, resulting in deformation of the middle portion of the retaining plate 60.

In addition, the conventional slide block 50 must be further provided with a screwing process for forming the screw hole 51, thereby relatively increasing the production cost. The screw 70 may cause deformation of the retaining plate 60 during assembly, and is time consuming and labor intensive to assemble and disassemble the retaining plate 60.

The present invention seeks to alleviate and / or obviate the aforementioned disadvantages of sliders in conventional linear guideways.

It is a primary object of the present invention to provide a screw-free ball retaining device for a slider of a linear guideway, in which the slide block is easily and quickly assembled at low cost and the shape strength of the ball retainer on the slide block is increased to prevent deformation. do.

To achieve the above object, the ball retainer on the slider of the linear guideway according to the invention is assembled without screws to the slider by cooperation with the end cup. The ball retainer is provided with a tongue structure to be inserted into the notch of the end cup, as a result of which the ball retainer can be assembled easily and quickly to improve the assembly efficiency of the slider. Due to the screwless structure, it is not necessary to form a screw hole in the slide block, so that the production cost and assembly time of the slider are relatively reduced.

Furthermore, when considering the slider with the elongated dimensions of the linear guideway, the corresponding slenders are large and easy to deform, so that in order to overcome this, other parts of the ball retainer according to the invention, in addition to both ends, will provide support strength to the ball retainer. Can be. Thus, the shape strength of the ball retainer on the slide block is increased to prevent deformation.                         

In addition, the ball retainer according to the present invention is plastic injection molding not only to reduce the noise generated by the collision between metals while extending the service life, but also to reduce the production cost of the entire linear guideway and to overcome the difficulty of precise control. It can be prepared as.

The invention will become more apparent from the following description taken in conjunction with the accompanying drawings, which show, by way of illustration, preferred embodiments of the invention.

1 is an exploded view of a slider of a linear guideway according to one aspect of the present invention, wherein the slider of the linear guideway includes a slide block 10 (with a slide groove formed therein so that the ball 90 rolls) and a ball 90. ) End cup 20 to allow reflow and ball retainer 30 to hold ball 90 on slide block 10. The ball retainer 30 is fixed on the mating surface 11 of the slide block 10.

FIG. 2 is an enlarged view of the ball retainer of FIG. 1. FIG. The ball retainer 30 is provided with a holding surface 31 such that the ball 90 rolls without falling off the slide block 10. Both ends of the ball retainer 30 are provided with tongue members 35 (in small hook shapes), which are to be inserted into the end cup 20 of FIG. 1 to secure the ball retainer 30. Can be. In addition, the ball retainer 30 is provided with a mating surface 34 to abut the mating surface 11 of the slide block 10. In order to improve the overall shape strength of the ball retainer 30, an intermediate portion of the ball retainer 30 is provided with a position pin 32 formed at the lower portion of the slide block 10 and an extension portion 33 employed. It may be formed further. In addition to being supported by tongue members 35 at both ends, the ball retainer 30 is further supported by the position pin 32 in the extension 33, so that deformation can be prevented.

3 is an enlarged view of the end cup of FIG. 1, in which the end cup 20 is provided with positioning holes 21, through which the end cup 20 can be secured to both ends of the slide block 10. , In synchronization with the slide block (10). The end cup 20 is further provided with a reflow path 23 for the ball 90 to roll around, a notch 22 is formed on the end cup 20, and the notch 22 has a ball retainer ( A reverse hook structure is provided that serves to act with the tongue member 35 of the ball retainer 30 to position 30).

4 is a perspective assembled view of a slider according to one aspect of the present invention, in which end cups 20 are provided at both ends of the slide block 10 to circulate balls (not shown) within the slide block 10. It can be seen that it is assembled. The ball retainer 30 is fixed to the bottom of the slide block 10 which abuts the end cup 20, ie the tongue members 35 at both ends of the ball retainer 30 are notched in the end cup 20. The extension 33 is coupled to the positioning groove 12 of the slide block 20, while being inserted into 22. In the positioning groove 12, the hole 13 is formed for insertion of a positioning pin (not shown) on the extension 33, so that the portion between both ends of the ball retainer 30 is extended. Supported by the ball retainer 30, so that the ball retainer 30 can be prevented from deforming.

Reference is further made to Figure 5, which is a cross-sectional view of the slide block and rail assembly according to one aspect of the present invention. The ball 90 is between the slide block 10 and the rail 40 to implement the relative motion of the slide block 10 relative to the ball 90. The ball retainer 30 is assembled at the bottom of the slide block 10, and when the positioning pin 32 is inserted into the hole 13 of the slide block 30, this will secure the middle portion of the ball retainer 30. Not only can it be, but it can provide a support force to prevent the fall of the middle portion of the ball retainer (30).

While various embodiments in accordance with the present invention have been shown and described, it will be apparent to those skilled in the art that there may be other embodiments within the scope of the present invention.

According to the present invention having the above-described configuration, a screw-free ball holding device is provided on the slider of the linear guideway, the slide block is easily and quickly assembled at low cost, and the shape strength of the ball retainer on the slide block is increased. To prevent deformation.

Claims (3)

Is a slider for a linear guideway A slide block provided with a slide groove for the cloud of the ball, An end cup fixed to both ends of the slide block for circulation of the ball and provided with a notch, Including ball retainer, Both ends of the ball retainer are provided with tongue members that can be inserted into the notches to fix the ball retainers, respectively, an extension part is formed in the middle of the ball retainer, and a positioning pin is formed on the extension part to be fixed to the lower part of the slide block. Slider of a linear guideway characterized in that. The slider of claim 1, wherein an inverse hook structure is formed in the notch. The slider of claim 1, wherein the tongue members at both ends of the ball retainer are hook-shaped.

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