FR2746276A3 - Telescopic runners for cabinet or cupboard drawers - Google Patents

Abstract

Runners (10) with an S-shaped cross section are secured to the inside surfaces of the drawer furniture item frame side walls to create two tracks (13,15) extending along the length of the runners for first and second sets of small wheels (14,16) secured to the drawer and frame respectively. A mechanism for lifting both sets of wheels is also provided.The tracks share a common central area (19) in the form of a partition wall between the two tracks that extends in a horizontal direction when the drawers are pushed into the frame. This area is created by dual bending of the two tracks towards each other about parallel bend lines (20), forming two elongated walls on opposite sides of the central area (22), between which either set of wheels can be inserted

Description

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  Telescopic slide for drawer The present invention relates to a telescopic slide for drawer, useful in particular, but not exclusively, in the fields

commercial and / or industrial.

  As is known either in the commercial or in the industrial field, drawers o rest the most varied objects are

widely used.

  Particularly in public establishments and in the food industry, food is often kept in drawers, or temporary waste is stored there.

production or sale.

  In any case, in the drawers used in particular in the food sector, periodic cleaning and hygienic treatment

  are particularly important.

  For such purposes, the drawers used in such a sector, in addition to guaranteeing a functional character and a high robustness, must guarantee

  such quick disassembly ability and easy access for cleaning.

  In the variety of embodiments also, the drawers used in the commercial and industrial fields are practically housed in a sliding manner in an opening by means of slides fixed to the

  interior and side surfaces of the latter.

  The slides currently in production have a structure consisting essentially of a longitudinally extending element whose section is S-shaped and of which either the zones associated with its free edges, or the central zone common to the two guides

  defined by said element are substantially planar.

  First casters, rotatably attached to the cabinet, and second casters, rotatably attached to the drawer, are inserted

  sliding in the guides defined by the slide.

  However, the slide shaped as described above is not in itself sufficient to hold said rollers in the guides.

defined by this slider.

  This is why, in order to give the assurance that the rollers remain

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  in the respective guides, it is now planned to apply plates, of longitudinal extent substantially similar to that of the

  slide, which define retaining edges for said rollers.

  However, the need to mount and dismantle the drawer as frequently requires that such plates have a shape such that they define lateral openings capable of allowing the exit of said rollers. However, such openings remain in any case critical points in the normal operation of the drawer, since, even if it is not desired, in the extraction or reintroduction phase of this drawer, it can happen the rollers come out of the openings. In addition, the application of the plates must necessarily be carried out by welding or, in any event, by means of other operations also

  expensive in terms of cost, time and manpower.

  The main task that the present invention sets itself to achieve is to provide a slide for drawer which ensures by itself the maintenance of fixed casters, both on the furniture and on the drawer, in the associated guides, while nevertheless allowing mounting and quick disassembly of the

drawer.

  In connection with this main task, an object of the present invention is to provide a structurally simpler slide and devoid of critical zones where there would be a risk of the wheels coming out during normal operation in extraction and reintroduction of the

drawer.

  Another object of the present invention is to provide a slide which can be produced without a welding operation, or other operations which are particularly complex and costly in terms of time, cost and manpower. A further object of the present invention is to provide a particularly solid slide which also withstands workloads

prolonged and / or abrupt.

  An aim of the present invention which is not the least is to provide a slide which can be produced with known techniques and which is possibly also applicable to drawers already put into production.

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and distributed in the market.

  The main task, the aims and other goals which will become more clearly apparent hereinafter are achieved by a telescopic slide for a drawer of the type fixed, in the assembled state, to one of the inner side walls with slides serving defining, in the cabinet, the opening housing the drawer, said slide having an S-shaped section used to define two guides extending longitudinally, in the first of which are inserted slidingly of the first castors rotatably attached to the mobile, while second castors rotatably attached to the drawer are slidably housed in the second, while end-of-travel means are provided as well for the first rollers than for the second rollers, the slide being characterized in that the two zones associated with its free edges have a V-shaped shape and that its medial zone iane, common to the two guides and substantially horizontal in the assembled state, is shaped, by means of a double fold in opposite directions, along parallel fold lines, so as to define two edges extending longitudinally and arranged in opposite directions which are able to hold both the first and second castors in

relative guides.

  Other features and advantages of the present invention

  will emerge mainly from the description of one of its forms of bet

  in work which is shown by way of indication, but not limiting its scope, on the boards of the accompanying drawings, in which: FIG. 1 represents a slide for a drawer according to the invention, FIG. 2 shows in exploded view the slide of the Figure 1, Figure 3 shows in orthogonal projection in section the slide of Figure 1 and Figure 4 shows in orthogonal projection the slide of Figure 1 in a disassembly or assembly phase of the drawer to which it

is associated.

  With particular reference to FIGS. 1 to 4, a telescopic slide for a drawer, according to the invention, is designated in its

together by reference 10.

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  In the assembled state, the slide 10 is fixed by means of a plate 11 to the internal walls competing to define, in the piece of furniture not shown,

  the opening housing the drawer designated by 12.

  The slide 10 has an S-shaped section so as to define two guides extending longitudinally in a first of which, designated by 13, are inserted in a sliding manner, in this case, two first rollers 14 fixed in a rotary manner to the plate 11 and therefore to the piece of furniture, while, in the present case, two second rollers 16 fixed in a rotary manner to the drawer 12 by means of a plate 17 are housed with a

  sliding in the second, designated by 15.

  The slide 10 also includes end-of-travel means described below. In addition, the slide 10 has the two zones, designated by 18, corresponding to its free edges, which have a V-shaped shape. A central zone 19 of the slide 10, common to the two guides 13 and 15 and substantially horizontal to the assembled state, is shaped by double folding in opposite directions along fold lines 20 so as to define a flat central face 21 extending longitudinally and two lateral flanges 22, arranged in opposite directions one opposite screws on the other and also extending longitudinally, which are capable of holding either the first rollers 14 or the second rollers 16 in the guides

relative 13 and 15.

  In the present embodiment, the first rollers 14 have a radial section of substantially complementary shape, at the level of the contact zones, of the interior surface defining the first guide 13. More precisely, each of the first rollers 14 has a section shaped so as to go narrowing towards

  outside at its peripheral zone.

  Still in the present embodiment, the second rollers 16 also have a radial section of substantially complementary shape, at least at the level of the contact zones, of the surface.

  interior defining the second guide 15.

  More specifically, each of the second rollers 16 has a radial section shaped so as to shrink towards

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  outside, at least at its peripheral zone.

  The configuration of the first rollers 14 and of the second rollers 16 contributes, in combination with the configuration of the slide, to ensuring a safe and effective active position and completely devoid of risk of leaving the guides 13 and 15. In the present form of placing in use, in the assembled state, the slide 10 is arranged in such a way that the first guide 13 is

  located above the second guide 15.

  In addition, the slide 17 is carried as a whole by the plate 11 by means of two cantilever elements 23 whose relative cantilever part has a V shape and therefore practically complementary to the

  part of the slide 10 which rests thereon.

  More precisely, as is evident from the figures, the area 18 associated with the second guide 15 arranged below takes

  support on the cantilever part of the cantilever elements 23.

  Furthermore, in the present case, the upper part of the slide 10 which defines the first guide 13 has a longitudinal extent which is less than that of the lower part still belonging to the slide 10 which is

associated with the second guide 15.

  The different longitudinal extent of the abovementioned parts defines two end openings respectively 24 and 25 of which, in the assembly and / or disassembly phase of the slide 10, a first 24, which practically concerns only the free end zone 18 of the first guide 13, is capable of causing the first rollers 14 to come out, while the second opening 25, which also involves part of the middle zone 19, is capable of causing the

return the second rollers 16.

  In the present embodiment, the end of stroke means comprise L-shaped legs 26 arranged at the end of

slide 10.

  In practice, it is observed how the present invention has

  provided a solution to the task and the goals which were at its basis.

  One can in particular observe the way in which the particular conformation of the slide according to the invention allows by itself the secure maintenance of the rollers, either associated with the drawer, or associated with the piece of furniture,

in the respective guides.

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  It can also be observed that the slide according to the invention does not require operations, such as welding or the like, particularly

  expensive in terms of time, labor and cost.

  We can also observe the overall structural solidity of the slide which also allows quick and easy disassembly and assembly of the drawer, which in particular facilitates cleaning and

  Always give this drawer maximum hygienic character.

  Other observations can be made concerning the robustness and the overall functional character of the slide according to the invention, which allow the latter to easily withstand loads of

  continuous or abrupt work, even of high intensity.

  The present invention is susceptible to numerous modifications and variants coming within the whole scope of the inventive concept, while in addition, the details can be replaced by other elements.

i 5 technically equivalent.

  The materials, as well as the dimensions can be any in

according to requirements.

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Claims (13)

  1. Telescopic slide for drawer of the type fixed, in the assembled state, to one of the interior side walls with slides serving to define, in the cabinet, the opening housing the drawer, said slide (10) having a section S-shaped used to define two guides (13, 15) extending longitudinally, in a first (13) of which are inserted in a sliding manner first rollers (14) rotatably fixed on the mobile, while second rollers (16) rotatably fixed on the drawer (12) are housed in a sliding manner in the second (15), while there are also end-of-travel means both for the first rollers (14) than for the second rollers (16), the slide (10) being characterized in that its central zone (21), common to the two guides (13, 15) and substantially horizontal in the state assembled, conformed, by double folding in opp directions daring, along parallel fold lines (20), so as to define two flanges (22) extending longitudinally and arranged in opposite directions which are capable of holding both the first rollers (14) and the second   rollers (16) in the relative guides.   2. Slide according to claim 1, characterized in that the central region (21) is shaped so as to define, between the flanges (22), a   flat face extending longitudinally.   3. Slide according to any one of the preceding claims,   characterized in that the first rollers (14) have a radial section of substantially complementary shape, at least at the areas of   contact, of the interior surface defining the first guide (13).   4. Slide according to any one of the preceding claims,   characterized in that the second rollers (16) have a radial section of substantially complementary shape, at least at the areas of   contact, of the interior surface defining the second guide (15).   5. Slide according to any one of the preceding claims,   characterized in that the radial section of the first rollers (14) is shaped so as to shrink outwards at least at level of its peripheral zone. 8 2746276   6. Slide according to any one of the preceding claims,   characterized in that the radial section of the second rollers (16) is shaped so as to shrink outwards, at least at level of its peripheral zone.   7. Slide according to any one of the preceding claims,   characterized in that it is carried by the furniture by means of one or   several cantilever elements (23) fixed to the latter.   8. Slide according to any one of the preceding claims,   characterized in that the one or more cantilever elements (23) have a cantilevered part having a V-shaped profile of substantially complementary shape   of the part (18) of the slide which rests on it.   9. Slide according to any one of the preceding claims,   characterized in that in the assembled state, the slide (10) is arranged so   placing the first guide (13) above the second guide (15).   10. Slide according to any one of the preceding claims,   characterized in that its upper part defining the first guide (13) has a longitudinal extent less than that of its lower part associated with the second guide (15), by defining two end openings (24, 25) of which, in phase of assembly and disassembly of the drawer, a first (24), which practically only concerns the free end zone associated with the first guide (13), is capable of causing the first casters (14) to come out or come in, while a second (25), also covering part of the area   median, is able to bring out or retract the second rollers (16).   11. Slide according to any one of the preceding claims,   characterized in that the end-of-travel means comprise legs   (26) in L located at the ends of the slide (10).   12. Slide according to any one of claims   previous, characterized in that the first rollers (14) are carried   rotatably by a plate (11) fixed to the cabinet.   13. Slide according to any one of claims   previous, characterized in that the second rollers (16) are carried   rotatably by a plate fixed to the drawer (12).