FR2486379A1 - RETRACTABLE SHELF FOR FURNITURE, IN PARTICULAR FOR KITCHEN FURNITURE - Google Patents

Abstract

THE INVENTION CONCERNS A RETRACTABLE SHELF FOR FURNITURE, ESPECIALLY FOR KITCHEN FURNITURE. IN THE SAID SHELF, TELESCOPIC GUIDING MECHANISMS 13, 23 ARE FIXED TO THE BODY OF THE CABINET 19, 29 ACCORDING TO AN INCLINATION DETERMINED BY A PLAN JOINING THE UPPER POSTERIOR AREA OF A POSTERIOR PLATE 30 AND THE ANTERIOR LOWER AREA OF A PLATE ANTERIOR 10. THE SAID REAR PLATE 30 IS SUBJECT IN A HORIZONTAL POSITION TO DEPLOYABLE PARTS 16, 26 OF SAID MECHANISMS 13, 23. THE ANTERIOR PLATE 10 PIVOTS ON SAID MECHANISMS 13, 23 IN THE REGION OF ITS ANTERIOR LOWER AREA. BARS 40, 42 OFFSET LATERALLY AND BEING SUPPORTED, DURING THE STRIPPING MOVEMENT OF THE ANTERIOR PLATE 10, AGAINST A TRANSVERSE PLATE 21, COMMAND THE PIVOTATION OF THE SAID PLATE 10. APPLICATION IN PARTICULAR TO FURNITURE OR KITCHEN ELEMENTS.

Description

The present invention relates to a retractable shelf for furniture,

especially for kitchen furniture,

  having at least two extensible plates, the

  the anterior cartilage is connected to the organs, which may be ex-

  the furthest features of two telescopic guide mechanisms comprising several parts and attached to the body of the

  whereas, in the retracted position, the plate

  the lower plate is retracted, one of these plates being movable vertically, by means of adjusting members, so that said plates are in a common plane in the extended position

  and are superimposed in the retracted position.

  A retractable shelf of this type has been described in the utility model DE-GM 7 821 362. In this known tablet, the components of the telescopic guide mechanisms are coupled so that, during the movement

  leaving the plates, these bodies constituting the said mechanisms

  guiding principles can be deployed successively from

  force (starting with organs that can be de-

  bent furthest away) and that when said plates are

  these organs can be retracted according to a

  inverted quence. Due to the necessary forced guidance of the

  telescopic mechanisms, slides

  Complicated or similar items are avoided in this known retractable shelf. The anterior plate of this

  the last is subject to the parts of the telescopic mechanisms

  which can be deployed further. Post plaque

  of this tablet must be ordered through the

  adjustment means so as to be lifted

  at the plane of the anterior plate when the plates are deployed, and lowered by a distance corresponding at least to the thickness of said anterior plate when the plates are retracted. This type of plate adjustment raises the difficulty of being able to abut the two plates against each other in the extended position, if possible without any interval. For this purpose, in the known tablet, the

  posterior plate is articulated close to its pos-

  by means of two pivoting levers, to deployable parts of the telescopic guide mechanisms. In this way, in addition to raising and lowering the

  posterior plate, an additional movement is obtained by

  In the plane of the plates, which causes at the end of the extension movement, an additional horizontal movement which brings the posterior plate closer to the anterior plate, while at the beginning of the retraction movement, said posterior plate is first of all removed from

anterior plate.

  The present invention therefore has as its object

  a retractable shelf of the aforementioned type, improved and simplified

  in such a way that the adjusters intended to pro-

  voiding additional horizontal displacements during the extension and retraction of the plates, as well as the forced guidance of the organs of the telescopic mechanisms, become superfluous, but that said plates can, however, be

  aligned without any gaps in the extended position.

  According to the essential characteristics of the tablet of the invention, the telescopic mechanisms of

  guiding are subject to the body of the furniture, according to a

  determined by the plane joining the upper edge

  posterior posterior plate and the lower edge

  anterior side of the anterior plate; said rear plate is secured in horizontal position to

  deployable parts of said guiding mechanisms; the-

  said anterior plate is hinged to said telescopic mechanisms near its anterior lower ridge

  and on the underside of said anterior plate,

  in addition to the telescopic guide mechanisms are arranged adjustment bars, which are parallel to said telescopic mechanisms and which, when the plate

  previous is returned in the body of the furniture, take support.

  by their lower edges constituting cams on a transverse board of said body and control the pivoting

  of said anterior plate, so that the posterior face

  top of this anterior plate is raised above

  the anterior surface of the posterior plate, and that either

  the position of said anterior plate, necessary for

  allow the continuation of the retraction movement.

  In this embodiment, a precise and fault-free movement of the displacement when the plates

  have been released and returned is obtained only through the posi-

  inclined telescopic guiding mechanisms and pivoting mounting of the front plate. In this case, the simple adjustment bars can control the assembly

  movement of the anterior plate, while the

  posterior may be subject to telescopic mechanisms

pikes.

  In another embodiment according to the

  vention, to allow the mounting of the posterior plate on the parts of the telescopic guide mechanisms,

  this posterior plate is fixed, via

  balancing chambers and at least near its anterior face.

  the upper faces of the constituents of the said

telescopic canisms.

  In another type of embodiment, the pivotal link

  between the anterior plate and the telescopic mechanisms

  copics is such that spacers are attached to the underside of said anterior plate, in the vicinity of

  of its anterior surface, and the organs of telescopic mechanisms

  The most pivotally deployable spades are pivotably supported by the bottom faces of these spacers, the pivot axis then coinciding with the anterior upper edges of said telescopic mechanism members and with the lower anterior ridges of the spacers.

spacer blocks.

  To form a pivot axis by simple means, the members of the guiding mechanisms, which can

  deployed the farthest, are subject to

  two screw connections or similar members having different clearances, so that these screw connections allow limited pivoting between the spacer blocks and said members, deployable fiaximum,

guiding mechanisms.

  In an alternative embodiment, the adjustment bars are configured and arranged such that they extend from the anterior face to the vicinity of the posterior face of the anterior plate; the lower edges of these bars have, at their ends

  free, short sections of high inclination

  which, when passing by the trans-

  of the body of the furniture, during the retraction movement,

  lifting of the posterior face of the anterior plaque

  a distance at least equal to the thickness of the

  plates; and the contiguous sections for guiding the lower edges

  the said bars, inclined in the opposite direction,

  the anterior plate and allow its lowering on the posterior plate, when they pass in front of the

  transverse board of the body of the piece of furniture.

  According to an improvement of the invention, so that the anterior plate constitutes, with the posterior plate, a

  rigid assembly in the extended position of the locking elements

  ge, mounted on the lower faces of said plates,

  the latter in the out position and can be de-

  blocked by the components of the telescopic guide mechanisms when said plates fit into the body of the furniture. Such locking prevents the anterior plate

  to pivot further when in the out position.

  In a particularly preferred embodiment

  simple, to obtain a blocking effect, the element of ver-

  rust consists of a wooden latch that is mounted pivotally

  both on the underside of the posterior plate by means of a screw connection or the like; a locking pin, integral with the wooden latch, enters a blind hole in the underside of the plate

  earlier; said wooden latch is supported by means

  of an elastic arm, against a solid stop pin

  the posterior plate; and said resilient arm urges the locking pin against the wall of said blind hole

  when, the plates occupying their outward position, the organisms

  nes constituting the guiding mechanisms release the locks

in wood.

  Moreover, for the tight wooden lock to take, also when unlocked, a position

  determined that does not hinder the movements of extension and

  the bolt is equipped with a stop pin which engages in a blind hole in the posterior plate and

  which limits the pivoting of said latch when the plate

  is in the unlocked position.

  In addition, two elements of ver-

  which, arranged outside the telescope mechanisms,

  guide copiers protrude beyond the anterior face of the posterior plate and at the same time serve as supports for the anterior plate in the extended position. Under these conditions, the locking elements are also

  used to limit the pivoting of said anterior plate

  to ensure that both plates are in

the same plane in the out position.

  In another embodiment, so that the locking of the plates does not interfere with the retraction movement

  of the latter, the constituents of telescopic mechanisms

  guiding pins unblock these locking elements

  before the sections of uprising of the bars of

  do not slide on the transverse board during

retraction movement of the plates.

  The invention will now be described in more detail with reference to the accompanying drawings by way of non-limiting examples and in which: FIG. 1 is a plan view of the lower face of the retractable shelf in the retracted position; Figure 2 is a section of said shelf in the retracted position along the line II-II of Figure 1;

  FIG. 3 is a plan view of the inferior face

  said tablet in the extended position; Figure 4 is a section of said tablet in the extended position, along the line IV-IV of Figure 3; Figure 5 is a section similar to Figure 4 and showing the arrangement and configuration of the adjustment bars; and

  FIG. 6 is a plan view from below illus-

  trant one embodiment of a locking member.

  As illustrated in Figures 1 to 4, the tablet

  retractable is housed in a frame that facilitates its incor-

  poration in the body of a piece of furniture and includes panels

  19 and 29 and transverse boards 20 and 21.

  Against the internal faces of the two side panels 19 and 29 are mounted in an inclined position two telescopic guide mechanisms 13 and 23 in five parts, the parts 14 and

24 are motionless.

  Parts 15, 16, 17 and 18 of the guiding mechanism

  13 may be deployed overlapping, as parts 25, 26, 27 and 28 of the mechanism 23. As illustrated, the organs constituting the mechanisms 13 and 23 are equipped

  known stops 22, which limit the deployment and the retraction of

  said bodies in such a way that a sufficient load capacity is maintained. Since this embodiment is known, it will not be described in detail

in the context of this memo.

  Parts 18 and 28, deployable to the maximum, mechanisms 13 and 23 are articulated on an anterior plate 10, by means of spacer blocks 11 and 12 which

  maintain said anterior plate 10 at a distance of

  determined from the upper face of the mechanisms 13 and 23,

  as illustrated in particular in Figure 4 ..

  As suggested by a plane of inclination 33, shown in FIG. 4 and determined by the upper edge of the posterior face of a posterior plate 30 and by the lower edge of the anterior face of the anterior plate 10, when said plates occupy their output position, the mechanism 13 and 23 are attached to the side panels 19 and 29 of the frame and their direction of deployment is parallel

tilt plane audit 33.

  The pivoting mounting of the front plate 10 on the guiding mechanisms 13 and 23 is provided by the spacer blocks 11 and 12, which are secured to the underside.

  of said anterior plate 10 near its anterior face

  pool. The upper faces of the parts 18 and 28, which can be deployed the farthest, from the mechanisms 13 and 23 bear on the lower faces of the blocks 11 and 12, via two screw connections 31 and 32, respectively, presenting different games. . Thus, is it given birth to a pivot axis 34 which coincides with the upper edges of the front faces of the parts 18 and 28 of the mechanisms 13 and 23, as well as with the lower edges of the front faces of the spacer blocks 11 and 12. In this case, the screw connection 32 closest to the pivot axis 34 must have a smaller clearance than the screw connection 31 which is furthest from the pivot axis 34. These screw connections 31 and 32 captively secure the parts 18 and 28 of the mechanisms 13 and 23 to the spacer blocks 11 and 12, while allowing them, however, to perform limited pivoting. The rear plate 30 is secured to the parts 16 and 26 of the guiding mechanisms 13 and 23. In this case, at least in the vicinity of the anterior face, it is necessary to provide balancing members 38 and 39 to allow

  said posterior plate 30 to occupy a horizontal position

  when the said mechanisms 13 and 23 are inclined. As suggested by screw connections 35 and 36 (FIG. 4), this connection between the posterior plate 30 and the mechanisms 13 and 23 is rigid. Said posterior plate 30 keeps its horizontal position during the extension movement, but this

  plate 30 continuously lowers during its movement of ex-

  tension and it is raised again in a corresponding way.

  laying during its retraction movement.

  As further illustrated in Figures 1 and 2, the posterior plate 30 is below the plate

  previous 10 in the retracted position.

  As shown in FIGS. 3 and 5, adjustment bars 40 and 42 have illustrated notches 46 and 47 and

  constituting regulators, are secured

  to the spacer blocks 11 and 12. These adjustment bars

  extending from the anterior surface to near the posterior face of the anterior plate 10 and they are laterally offset and are parallel to the guiding mechanisms 13 and 23. Lower edges 41 and 43 of these adjustment bars are made in the form of cams and they cooperate with the transverse board 21 against

  which said lower edges 41 and 43 of said barbs

  rettes 40 and 42 are supported at the beginning of the extension movement

  and at the end of the retraction movement. Said lower edges

  41 and 43 form, at the free ends of the adjustment bars, two short sections of strong lifting.

  tilt that cause an upward movement or des-

  extending from the posterior face of the anterior plate 10, as a result of pivoting thereof, said displacement occurring over a distance at least equal to the thickness of the posterior plate 30. The guide portions, inclined

  in the opposite direction, lower edges 41 and 43 of the bars

  adjustment tabs 40 and 42 control the pivoting of the front plate 10 so that when the movement occurs

  retraction, this anterior plate should be kept

  30 of the posterior plate 30 only until it overlaps this plate 30. Then, the bars 40 and 42 allow the lowering of said anterior plate 10 on said posterior plate 30. Because these strips 40 and 42 are fixed on spacers 11 and 12 to

  the outside of the guiding mechanisms 13 and 23, they do not

  do not fish for plate extension and retraction

  and 30, as well as said mechanisms 13 and 23.

  Since the anterior plate 10 is applied

  on the posterior plate 30 in the retracted position and that

  mechanisms 13 and 23 do not include guiding

  In this case, the plates 10 and 30 are deployed together during the extension movement, which allows a slight offset in the direction of extension. When the lower edges 41 and 43 of the adjustment bars 40 and 42 pass opposite the transverse board 21, the plate

  prior 10 can perform a brief upward pivoting.

  This does not play an important role, however. As soon as the posterior face of the anterior plate 10 is pulled in front

  the anterior surface of the posterior plate 30, said

  that anterior 10 can be lowered in front of said rear plate 30 and be kept in the same plane as the latter. When the extension movement continues, the two plates 10 and 30 are then lowered together in a plane

  because they are displaced along the

  telescopic guide means 13 and 23 inclined.

  To ensure that this position is prevented from coming out of the front plate 10 in front of the rear plate 30, additional locking elements 48 are provided (FIG. 6). These elements 48 can be arranged on each side and

  on the underside of plates 10 and 30, on the outside

  The locking elements 48 consist of wooden latches, which are rotatably mounted, each by means of a screw connection 49, to the lower face of the rear plate 30 and protrude beyond of the anterior face of this plate 30. In this way, the locks

  at the same time constitute supports for the posterior face.

  of the front plate 10, causing a limitation of the pivoting of the plate 10 as well as its alignment

with the posterior plate 30.

  In the extended position illustrated in FIG. 6, the portions (for example 26) of the telescopic guiding mechanisms release the wooden latches, so that it is possible to pivot them inwards by means of respective flexible arms. 56, since each arm 56 bears against an abutment pin 51 integral with the rear plate 30. In this case, a locking pin 53, integral with each wooden latch and engaged in a hole

  blind 55 formed in the underside of the anterior plate

  10, is pushed against the wall of said blind hole 55, and said anterior plate 10 is thus maintained in its

  position out, unable to rotate.

  When the plates 10 and 30 are retracted, they retain their alignment first, until the

  part (for example 26) of the telescopic mechanism pivots

  lock the wooden latch outwards and remove the

  cage provided by the stud 53 and the blind hole 55 of the front plate 10. This release occurs before the adjustment bars 40 and 42 slide on the transverse board 21 and pivot upwardly the front plate 10 so that it can slide on the posterior plate

  30. When the anterior plate 10 overlaps the posterior plate

  30, the transition took place between the sections of

  removal and the guide portions (inclined differently) of the lower edges 41 and 43 of the adjustment bars 410 and 42, so that said anterior plate 10 can be lowered on the posterior plate and be brought with this

last in the retracted position.

  Each wooden lock is subject to the action exercised

  by its associated flexible arm 56 having a slot 50.

  So that this wooden lock can take an initial position

  determined, it is equipped with a stop pin 52, which is

  secured in a blind hole 54 formed in the lower face of the rear plate 30. In this way, the inward pivoting of the wooden latch is limited when the tenon of

  lock 53 has already been released from the front plate 10.

  It goes without saying that many modifications can

  can be made to the described retractable tablet and

  shown without departing from the scope of the invention.

he

Claims (10)

  l.Tablet retractable for furniture, especially for   kitchen furniture, having at least two extension plates   ss, whose anterior plate is connected to the farthest extendible parts of two telescopic guide mechanisms in several parts attached to the body of the   furniture, the posterior plate being arranged, in position-   camotée, below said anterior plate retracted, one of these plates being movable vertically relative to the other by means of adjusting members, so that said plates are in a common plane in the extended position and are superimposed in the retracted position,   tablet characterized by the fact that said telescopic mechanisms   guide copics (13,23) are attached to the furniture body (19,29) at an inclination determined by the plane joining the posterior upper edge of the posterior plate (30)   outlet and the anterior lower edge of the anterior plate   upper (10) outlet; said rear plate (30) is secured in horizontal position to deployable parts (eg 16,26) of said telescopic mechanisms (13,23); said front plate (10) is hinged to said telescopic mechanisms (13,23) near its edge   lower anterior; and by the fact that, on the underside,   rear of said front plate (10) and outside of said mechanisms (13,23), are arranged adjustment strips (40,42) which are offset laterally, are parallel to said mechanisms (13,23) and are supported by their lower edges (41,43) constituting cams, during the retraction movement of the front plate (10) in the body of the piece of furniture (19,29), against a transverse board (21) of said body (19, 29), and which control the pivoting-of said anterior plate (10), so that the posterior face of this anterior plate (10) is raised above the anterior face of the posterior plate (30), and that is set the position of said front plate (10) necessary to allow   the continuation of the retraction movement.   2. Shelf according to claim 1, characterized in that the rear plate (30) is fixed at least near its anterior face and by means of balancing members (38,39) to the upper faces of the parts.   (16,26) telescopic guide mechanisms (13,23).   3. Shelf according to one of claims 1 and 2,   characterized in that spacer blocks (11, 12) are. secured in the vicinity of their anterior face to the underside of the anterior plate (10); and in that the maximum displaceable portions (18, 28) of the guide mechanisms (13, 23) pivotably support the pivot axis on the lower faces of said blocks (11, 12). 34) then coinciding with the anterior upper edges of these parts (18,28) of said mechanisms (13,23), and with the anterior lower edges   said spacer blocks (11, 12).   4. Shelf according to claim 3, characterized   in that the parts (18, 28) of the telescopic mechanisms   (13,23), which can be deployed to the maximum, are fixed to the spacer blocks (11,12) by means of two screw connections (31,32) or similar members having different clearances, so that said screw connections (31, 32) allow limited pivoting between the blocks   (11,12) and said parts (18,28),   the farthest, guiding mechanisms (13,23).   5. Tablet according to any one of the claims   1 to 4, characterized by the fact that the bars   of adjustment (40,42) extend from the anterior face   close to the posterior surface of the anterior plate (10); that the lower edges (41,43) of these bars (40,42) have, at their free ends, short segments of high inclination uprising which, when the retraction movement takes place, cause a lifting of the face posterior of the anterior plate (10) a distance at least equal to the thickness of the plates (10,30), when they pass opposite the transverse board (21) of the body of the furniture (19,29); and in that the adjacent guide portions of said lower edges (41,43) of the counterclockwise adjustment bars (40,42) release said anterior plate (10) and permit its lowering on the posterior plate (30). ) when they pass   of the transverse board (21) of the furniture body (19,29).   Tablet according to any one of the claims   1 to 5, characterized in that locking elements (48) fixed to the lower faces of the plates (10, 30) block these plates (10, 30) in the extended position and can be unlocked by the parts (for example 26) telescopic guide mechanisms (13,23) when said plates (10,30) fit into the body of the furniture (19,29).   7. Shelf according to claim 6, characterized in that each locking element (48) consists of a wooden latch, which is rotatably mounted, by means of a screw connection (49) or a similar member, at the lower face of the posterior plate (30); that a locking pin (53), integral with the wooden latch, is engaged   in a blind hole (55) in the lower surface of.   the anterior plate (10); that each wooden latch is supported, by means of a flexible arm (56) against a stop pin (51) integral with the rear plate (30); and in that each flexible arm (56) presses each locking pin (53) against the wall of the blind hole (55) when, the plates (10, 30) occupying their extended position, the portions (26) of the telescopic mechanisms guiding   (13,23) release the wooden locks.   8. Shelf according to one of claims 6 and 7,   characterized by the fact that each wooden latch has a stop pin (52) which is engaged in a blind hole   (54) of the posterior plate (30) and which limits the pivot   said wooden latch when the anterior plate (10) occupies its unlocked position.   9. Tablet according to any one of the claims   tions 6 to 8, characterized by the fact that its two   locking elements which, arranged outside the mecha-   telescopic guide means (13,23) protrude beyond the front face of the rear plate (30) and are used at the same time, in the extended position, as supports of the anterior plate (10).   10. Tablet according to any one of the claims   6 to 9, characterized in that the portions (for example 26) of the telescopic guiding mechanisms (13, 23) release the locking elements (48) before, during the retraction movement of the plates (10, 30 ), the bars   (40,42) slide by their segments of lift-   on the transverse board (21).