TWM575483U - Cross roller type sliding track - Google Patents

Abstract

The present invention relates to a cross roller type slide rail comprising two rails, one side of which has two opposite grooves and a V-shaped raceway between the two grooves. A retainer is disposed between the rails, and the retainer has a plurality of retaining slots, each retaining slot accommodating a roller, and the outer peripheral surface of each roller abuts against the V-shaped raceway of the two rails, and further, two retaining slots The opposite end walls respectively have a tab which abuts against the opposite end faces of one of the rollers and corresponds to the grooves of the two rails in a one-to-one manner. Therefore, the cross roller type slide of the present invention uses the groove to avoid the tab, so that the track avoids interference with the retainer, and the fin maintains a sufficient length to contact the roller, and the static load and movement of the slide rail are raised. Load capacity.

Description

Cross roller slide

This creation is related to slide rails, especially a cross roller type slide rail.

A typical slide rail is a transmission interface with a plurality of rolling elements (such as balls or rollers). In order to avoid the detachment of the rolling members, the retainer is mainly used to support the rolling members in the prior art. For example, the holder disclosed in Japanese Patent No. 62-42171 has a plurality of pairs of two-two pairs of tabs, each pair of tabs holding a roller. The length of the tab affects the retention of the roller. The longer the length of the tab, the better the retention of the roller. However, the problem is that in order to avoid the growing tabs, the contact line between the raceway of the slide rail and the roller is shortened. The problem with this is that as the contact line between the raceway and the roller is shortened, the static load and dynamic load capacity of the slide rail are degraded. Under the same load conditions, the service life is also shortened.

This will increase the use limit of the slide rails, which is not conducive to the rail application.

The main purpose of this creation is to provide a cross roller type slide rail that can maintain the roller load capacity under the effect of maintaining the roller.

In order to achieve the above main objectives, the cross roller type slide of the present invention comprises two opposite rails, one retainer, and a plurality of rollers. The opposite sides of the two rails respectively have two opposite recesses and a V-shaped raceway between the two recesses; the retainer is disposed between the two rails and has a plurality of retaining slots, and the retaining The slots are arranged at equal intervals along the extending direction of the two rails, and the opposite end walls of each of the retaining slots respectively have a tab, and each pair of tabs is inclined outwardly by a predetermined angle with respect to a retaining slot and is located at the retaining slot. The two opposite sides of the groove, and the inclination direction of the adjacent two pairs of the tabs are opposite. In addition, each of the tabs of the holder corresponds to one of the grooves; the rollers are arranged in a one-to-one manner Between the two opposing tabs of the retainer and between the two opposing tabs of the retainer, the outer peripheral surface of each of the rollers abuts the V-shaped raceway of the two rails.

It can be seen from the above that the crossed roller type slide of the present invention uses the groove to evade the corresponding tab, and avoids interference between the two rails and the retainer, so that the tabs have sufficient length to follow. When the roller is in contact, the length of the contact line between the raceway and the roller can be increased, and the static load and dynamic load of the slide rail can be enhanced.

Preferably, each of the rails has an inner side surface, and the retainer has two opposite outer sides, and a distance between an inner side surface of each of the rails and an outer side surface of the retainer is defined as D1, and each of the rails has a groove The shortest distance between the tab and the tab of the holder is defined as D2, and the following relationship is satisfied: 0≦D2≦D1; further, the groove width of each groove is defined as W, among the grooves The shortest distance between the point and the V-shaped raceway is defined as D3, and the following relationship is satisfied: ≦D3.

Preferably, the cross-sectional shape of each of the grooves may be curved or rectangular. If the shape is curved, the opposite ends of each of the grooves may further be provided with a rounded corner, one of the rounded corners and the V-shaped raceway. Connect.

The detailed construction, features, assembly or use of the cross roller type slides provided by this creation will be described in the detailed description of the subsequent embodiments. However, those of ordinary skill in the art should understand that the detailed description and specific embodiments of the present invention are merely used to illustrate the present invention and are not intended to limit the scope of the patent application.

The applicant first explains here, in the entire specification, including the examples described below and the claims of the patent application, "upper", "lower", "top", "bottom", "inside", "outside" The terms related to directionality are based on the direction in the schema. In the following embodiments, the same reference numerals will be given to the same or similar elements or structural features thereof.

Referring to Figures 1 and 2, the cross roller type slide rail 10 of the first embodiment of the present invention includes two opposing rails 20, a holder 30, and a plurality of rollers 40 (not limited in number).

Referring to FIG. 3, the two rails 20 have two upper and lower opposite grooves 22 and a V-shaped race 23 between the two grooves 22, respectively. It is worth mentioning here that the groove 22 can have a variety of different structural changes, for example, the cross-sectional shape of the groove 22 can be curved (as shown in Figures 3 and 5) or rectangular (as shown in Figure 6). As shown, the top and bottom sides of the groove 22 may be provided with no rounded corners 24 (as shown in Fig. 3) or rounded corners 24 (as shown in Fig. 5), if the latter, A rounded corner 24 is adjacent to the V-shaped raceway 23. As in the present embodiment, the cross-sectional shape of the recess 22 is curved, and the top and bottom sides of the recess 22 are not provided with rounded corners 24.

The retainer 30 is disposed between the two rails 20 and has a plurality of retaining slots 32 (not limited in number). The retaining slots 32 are arranged at equal intervals along the extending direction of the two rails 20, and the tops of the retaining slots 32 are respectively The bottom end walls respectively have a tab 33, and each pair of tabs 33 is inclined at a predetermined angle with respect to the retaining groove 32 toward the different rails 20, on the one hand, the same pair of tabs 33 are located on opposite sides of the retaining groove 32, and On the one hand, each of the tabs 33 corresponds to one of the grooves 22 of one of the rails 20. Further, the inclination of the adjacent pairs of the tabs 33 is opposite.

The rollers 40 are disposed on the holding grooves 32 of the retainer 30 in a one-to-one manner, and the outer peripheral surface 41 of each of the rollers 40 abuts against the V-shaped races 23 of the two rails 20, and the tops of the respective rollers 40 The bottom two end faces 42 are positioned by the one of the retainers 30 against the tabs 33 such that the adjacent two rollers 40 are inclined in opposite directions.

Further, as shown in FIG. 4, each of the rails 20 has an inner side surface 21 provided with the two recesses 22 and the V-shaped raceway 23, and the retainer 30 has two outer side faces 31 facing the different rails 20, The distance between the inner side surface 21 of the rail 20 and the outer side surface 31 of the retainer 30 is defined as D1, and the shortest distance between the recess 22 and the corresponding tab 33 is defined as D2, and the following relationship is satisfied between the two. Formula: 0≦D2≦D1; further, the groove width of the groove 22 is defined as W, and the shortest distance between the point of the groove 22 and the V-shaped raceway 23 is defined as D3, and the following relationship is satisfied between the two: ≦D3.

It can be seen from the above that the cross roller type slide rail 10 of the present invention uses the recess 22 to evade the corresponding tab 33, which can effectively prevent the rail 20 from interfering with the retainer 30, so that the tab 33 maintains a sufficient length to roll. The contact of the column 40 can also increase the length of the contact line between the raceway 23 of the slide rail 10 and the roller 40, and enhance the static load and dynamic load of the slide rail 10.

In addition, please refer to Fig. 7, in which the indication line P shows the length of the same tab 33, the position of the inner side designed by the prior art to avoid interference. Compared with the prior art, the first embodiment of the present invention can increase the contact length shown by the length D in the figure, so that the ability of the slide rail 10 to increase the static load and the dynamic load can be enhanced compared to the prior art.

10‧‧‧ Cross Roller Slides

20‧‧‧ Track

21‧‧‧ inside

22‧‧‧ Groove

23‧‧‧V-shaped raceway

24‧‧‧ fillet

30‧‧‧keeper

31‧‧‧Outside

32‧‧‧ Keep slot

33‧‧‧Tip

40‧‧‧roller

41‧‧‧ outer perimeter

42‧‧‧ end face

P‧‧‧ indicator line

D‧‧‧ Length

Fig. 1 is a perspective view showing the appearance of a cross roller type slide rail according to a first embodiment of the present invention. Fig. 2 is a partially exploded perspective view showing the cross roller type slide rail of the first embodiment of the present invention. Figure 3 is a cross-sectional view taken along line 3-3 of Figure 1. Fig. 4 is a partially enlarged view showing the third figure omitting the roller. Fig. 5 is a partial cross-sectional view showing the rail provided by the cross roller type slide rail of the second embodiment of the present invention. Fig. 6 is a partial cross-sectional view showing the rail provided by the cross roller type slide rail of the third embodiment of the present invention. Fig. 7 is a partially enlarged cross-sectional view showing the first embodiment of the present invention, showing a comparison with the prior art.

Claims (6)

A cross roller type slide rail comprising: two mutually parallel tracks, wherein one side of each of the two rails has two opposite grooves and a V-shaped raceway between the two grooves; a retainer, Between the two rails and having a plurality of retaining slots, the retaining slots are arranged at equal intervals along the extending direction of the two rails, and the opposite end walls of each of the retaining slots respectively have a tab, each pair of convex The sheet is inclined by a predetermined angle with respect to a holding groove and located on opposite sides of a holding groove, the inclination direction of the adjacent two pairs of the tabs is opposite, and each of the tabs corresponds to one of the grooves; and The rollers are respectively disposed in the retaining groove of one of the retainers and positioned between the two opposing tabs of the retainer, and the outer peripheral surfaces of the rollers abut against the V-shaped raceways of the two rails. The cross roller type slide rail according to claim 1, wherein each of the rails has an inner side surface, the inner side surface has the two recesses and the tab, and the retainer has two opposite outer sides, each of the rails The distance between the inner side surface and the outer side surface of one of the retainers is defined as D1, and the shortest distance between the groove and one of the tabs of the retainer is defined as D2, and the two meet The following relationship: 0≦D2≦D1. The cross roller type slide rail according to claim 2, wherein a groove width of each of the grooves is defined as W, and a shortest distance between a point of each of the grooves and the V-shaped race track is defined as D3, both The following relationship is satisfied: ≦D3. The cross roller type slide rail according to any one of claims 1 to 3, wherein each of the grooves has a curved shape in a cross section. The cross roller type slide rail according to claim 4, wherein two opposite sides of each of the grooves are respectively provided with a rounded corner, and one of the rounded corners is adjacent to the V-shaped raceway. The cross roller type slide rail according to any one of claims 1 to 3, wherein each of the grooves has a rectangular cross section.