FR2494358A1 - Friction damped telescopic slide - has tubular joints on cruciform slide arms working against polygonal tube inner corners - Google Patents

Abstract

The telescopic slide comprises a cruciform slide (2) working in a polygonal-section tube (1). Edge edge of the longitudinal slide arms (3) is clad with a tubular sleeve (4) of plastics, in tangental contact with the inside of the tube at the corners. Each joint can have a lengthwise slot by which it fits over its respective arm, while the slide itself can be entirely of plastics and moulded, with the ends forming slotted tubes.

Description

Multipurpose slide
The invention relates to a slide with gentle friction, of the type comprising a cruciform slide guided in a tube of polygonal cross section, which is intended to allow the movement of one member relative to another and is particularly well, but not exclusively, for the telescopic rules described in patent application No. 80 24078
This slide is also used in furniture, housewares, tools.

 Currently, when it is necessary to ensure a sliding of two members, recourse is had to roller or ball bearing, roller, needle slides. These devices have good efficiency but are noisy and expensive. The game that can be established between the different parts only increases with use; on the other hand when it comes to vertical sliding there remains a risk of displacement by gravity which authorizes the use of this kind of slide only in special cases or else requires braking means.

 The object of the present invention is to remedy these drawbacks and, as characterized in the claims, consists, for a slide comprising a slide guided in a tube of polygonal section, in covering each longitudinal edge of said slide with a tubular joint in tangential contact with the interior of the angles of the polygon, thus ensuring an anti-vibration sliding, flexible and elastic, silent, allowing moreover a possible backlash, a displacement dosage and a slight braking.

In what follows, the invention is explained in more detail using drawings representing several embodiments:
- Figure 1 is a perspective view of a slide according to the invention
- Figure 2 shows in section an edge of the slide in the internal corner of the circumscribed tube
- Figure 3 shows in section an example of a rectangular slide;
- Figure 4 shows in section a cross slide slide made entirely of plastic.

 In FIG. 1, the tube 1 in which the slide 2 fits and slides is of square section and the slide is provided cruciform. Each edge of its branches 3 is covered by a seal 4 made of tubular plastic material and split longitudinally to allow it to overlap the edge of the branch so that this edge is in contact with the internal wall of said seal, as shows it on a larger scale and er. cut figure 2.

 Figure 3 shows in section a slide whose tube 1 is of rectangular section. We see that each angle of the tube receives a branch 3 dressed with a tubular joint 4 and that the four branches are joined by a flat spacer 5, longitudinal. In the case where the tube 1 would have a different polygonal section, the slide would be studied so that its branches or the major part of its branches reach the sliding angles.

 In Figure 4 there is shown another embodiment of the slider inscribed in a square tube. This slide 6 is made of plastic and comes entirely from molding. The four branches constituting each terminate in a tubular part 7 of thinner than the branch and split longitudinally at 8 to give the slider its elasticity and flexibility.

 This mode of soft friction slides is remarkably suitable for the production of partition alignment guides of patent 80 24078, the vertical slides of which have a self-locking system and the horizontal slides could be fitted with tubular joints 4 ensuring sliding. soft and silent.

 It is also particularly suitable for runners in light alloy, aluminum, duraluminium or entirely in plastic.

 It goes without saying that modifications can be made to the devices which have just been described, in particular by substitution of equivalent technical means, without going beyond the ambit of the present invention.

Claims (4)

Patent claims.  1 - Soft friction slide comprising a cruciform slide (2) guided in a tube (1) of polygonal section, characterized in that each edge of the longitudinal branches (3) of the slide (2) is covered with a tubular joint ( 4), made of plastic, in tangential contact with the interior of the angles of the circumscribed polygon (1).  2 - Slide according to claim 1, characterized in that each tubular joint (4) is split longitudinally to overlap the edge of the branch (3) of the slide (2).  3 - Slide according to claim 1, characterized in that the cruciform slide (6) is entirely made of plastic and molded and that its branches each end in a tubular part (7), of reduced thickness, split longitudinally in (8) and in tangential contact with the interior of the angles of the circumscribed polygon - (1).  4 - Slide according to claim 1 characterized in that the elements (1) - (2) - (6) of the slide are made of metal or light alloy or plastic and metal or entirely of plastic.