FR2780256A1 - Adjustable sprung divan - Google Patents

Abstract

The adjustable divan (2) comprises a fixed frame (7) on the rear end (5) of which pivots movable frame (20). The movable frame extends as far as the front end (4) of the fixed frame. An antimacassar (10) pivots on the movable frame and a motorization block (15) with two electrical motors (17) carried by the movable frame controls the pivoting of the antimacassar and the movable frame.

Description

Adjustable bed base.

  The present invention relates to the box springs of

adjustable beds.

  More particularly, the invention relates to an adjustable bed base, comprising a fixed frame which

  extends in a longitudinal direction between an end

  head mate and foot end, this fixed frame carries

  both at least one mobile frame which includes:

  - a headrest extending in the long direction

  gitudinal between, on the one hand, a first end which

  is close to the head end of the fixed frame, and

  on the other hand, a second end which is located between the

  head and foot ends of the fixed frame which is

  pivoting tee around a transverse horizontal axis, the headrest comprising means for supporting a mattress between its first and second ends, - a movable frame forming a rigid assembly, which extends in the longitudinal direction between, on the one hand, a first end which is situated at the level of the headrest and which is pivotally mounted on the fixed frame around a transverse horizontal axis, and on the other hand, a second end close to the foot end of the

  fixed frame, the mobile frame comprising means for

  wear a mattress between the headrest and the end of the foot

fixed frame.

  EP-A-0 505 847 describes an example of a

such adjustable bed base.

  The box spring described in this document presents the

  agrees that the adjustment mechanisms of the headrest and of the movable frame are two independent mechanisms fixed at the two ends of the bed base, so that: on the one hand, the mounting of these mechanisms on the fixed frame is relatively expensive in material and in labor, - and on the other hand, if the two mechanisms are electrically controlled, it is necessary to run

  electric cables along the entire length of the bed.

  In addition, when the user adjusts the inclination of the movable frame, the relative angle between this movable frame and the headrest is changed, so that the user must then frequently re-adjust the inclination of the headrest.

  The object of the present invention is in particular to pal-

link these drawbacks.

  To this end, according to the invention, a adjustable base

  ble of the kind in question is essentially characterized in that it further comprises a motor block which comprises first and second electric motors and which is carried by the movable frame, the first and second

  electric motors respectively controlling the swivel-

  ment of the headrest and the movable frame.

  Thanks to these provisions, both the

  headrest and the movable frame by means of the same block of mo-

  torization which can be of a standard type conventionally used to control 5-sided adjustable bed bases,

  which is easy to mount on the mobile frame and which does not

  do not stop running electrical cables on

the entire length of the bed.

  In addition, because the motor block is mounted on the movable frame, the base can easily be designed so that the relative angle between the headrest and the movable frame remains constant or substantially constant when adjusting the inclination of said movable frame, which

  then avoids adjusting the tilt of the head again

third.

  In preferred embodiments of the invention

  tion, one can optionally have recourse to one and / or the other of the following provisions: - the second end of the headrest is pivotally mounted on the movable frame;

  - the first end of the movable frame is mon-

  pivoting tee on the fixed frame in the vicinity of the head end of said fixed frame; - a first connecting rod is pivotally mounted on the

  motor block around a transverse horizontal axis

  sal and is controlled by the first electric motor,

  this first connecting rod extending to a li-

  bre which is slidably mounted relative to the fixed frame to adjust the inclination of the movable frame;

  - the engine block is located towards the middle

  location of the box spring between the head and foot ends, and the first connecting rod extends rearward to its free end from said motorization block; - a second connecting rod is pivotally mounted on the

  motor block around a transverse horizontal axis

  sal and is controlled by the second electric motor,

  this second connecting rod extending to a li-

  bre which is slidably mounted on the headrest to adjust the inclination of said headrest; - the headrest has an upper part and a lower part hinged together, the second

  connecting rod in the form of a bent lever ri-

  gide which is placed under the headrest and which comprises of

  part, a first section extending from the motor block

  implementation substantially in correspondence with the part

  of the headrest, and on the other hand, a second section

  section extending obliquely upwards from the first section to the free end of the second connecting rod, substantially in correspondence with the upper part of the headrest, the first section comprising a member

  intermediate support which is arranged to come into con-

  tact with the lower part of the headrest in order to

  rotate only when said upper parts

  lower and lower of the headrest make between them a year-

  predetermined relative angle less than 180 degrees, so that the pivoting of the second connecting rod, from a

  horizontal position of the headrest, first results in uni-

  only a pivoting of the upper part of the head-

  first, then an overall pivoting of the headrest; - the first and second sections of the second

  connecting rod extend substantially parallel respectively-

  lie at the bottom and at the top of

  the headrest as soon as the intermediate support member of the

  said second connecting rod is in contact with the lower part

the headrest.

  Note that the provisions of the last two

  paragraphs could if necessary be used independently

  particularly from the previous provisions.

  Other characteristics and advantages of the invention

  tion will appear during the following description

  of one of its embodiments, given by way of example

  ple nonlimiting, with reference to the accompanying drawings.

  In the drawings: - Figure 1 is a perspective view of a bed including a bed base according to an embodiment of the invention, - and Figures 2 to 5 are views in longitudinal section of the bed base of the figure 1, showing

  different phases of the adjustment of this box spring.

  In the different figures, the same references designate identical or similar elements. FIG. 1 represents a double bed 1 which includes an adjustable bed base 2 supporting in this case two juxtaposed mattresses 3, each forming a bed for

a person.

  The box spring 2 extends longitudinally between the front or foot 4 and rear or head 5 ends, and it is delimited laterally by two longitudinal sides

  6, which in this case are part of a base

  fixed ti 7 resting on the ground by means of four feet 8.

  In the example shown, the bed base 2 comprises two adjustable frames 9 juxtaposed, which each include slats 31 supporting one of the mattresses 3 (the bed base 2 could however include a single frame 9 supporting

a single mattress 3).

  Each of these adjustable frames 9 is subdivided into

  a headrest 10 and a flat foot portion 11, which comprises

  both take slats 31 which are adjustable

  respectively by means of two electric motors controlled for example by two control buttons 12 with three positions (ascent / stop / descent), permanently mounted on the outer longitudinal side 6 corresponding to the frame

adjustable 9 in question.

  In total, the box spring 2 therefore comprises a pair of

  control buttons 12 on each of its longitudi-

  external nals 6, so that each user of the bed

  1 can easily control the adjustable frame 9 corresponding

at his own sleeping place.

  So that the control buttons 12 are ai-

  reasonably accessible, they are preferably located at a point

  sition between 1/3 and 2/3 of the length of the corresponding longitudinal side 6, and these control buttons are moreover arranged on the external face 6a or the case

  appropriate on the upper face 6b of said longitudinal side.

  In the example shown in the drawings, the ac-

  operation of the rear control button 12 allows

  first lift an upper part 13 of the headrest 10, until this upper part 13 does with a

  lower part 14 of the headrest at an angle a, then

  raise the lower part 14 of the headrest until this lower part forms an angle of p with the foot part 11. Furthermore, actuation of the front control button 12 makes it possible to raise the front end of the part

  of foot 11, until it makes an angle y with the ho-

  rizontale. These results are obtained by means of the adjustment mechanism shown in FIGS. 2 to 5, which comprises, for each movable frame 9 of the bed base: - a motor block 15 (well known to those skilled in the art, for example from the document FR -2,351,629 or

  of document WO-89/10715) which is linked to the control buttons

  command 12 correspondents by means of a cable 16 fixed to the bed base, this motor block 15 comprising two electric motors 17 which respectively control the adjustment of the headrest 10 and of the foot part 11 as a function of the actuation of the buttons rear and front control 12, the motor block 15 being supported by

  two rigid transverse bars 18 which are mounted pi-

  voting on supports 19 secured to a movable frame belonging to the corresponding movable frame 9, this frame

  mobile 20 including the foot portion 11 and extending in-

  be the front 4 and rear 5 ends of the base while being articulated on the fixed frame 7 in the vicinity of the rear end 5, - a first connecting rod or front connecting rod 21 which is secured to the front transverse bar 18 and which is

  controlled by the front motor 17, this connecting rod 21 extends

  backward to a free end with a

  roller 22 which slides in a horizontal guide longitudi-

  nal 23 integral with the fixed frame 7, - and a second rod or rear rod 24 which rotates with the rear crossbar 18 under the action

rear motor 17.

  This rear connecting rod 24 is in the form of a bent lever which is disposed under the headrest 10 and which has: - on the one hand, a first section 24a linked to the rear crossbar 18 and arranged substantially in correspondence with the part lower 14 of the headrest,

  - and on the other hand, a second section 24b pro-

  running along the first section 24a backwards and upwards, and arranged substantially in correspondence with the

  upper part 13 of the headrest.

  The second section 24b has at its free end a first roller 25 mounted to slide in a longitudinal guide 26, for example a hollow section with a cross section

  U, arranged under the upper part 13 of the headrest.

  Furthermore, the first section 24a of the rear connecting rod comprises, towards its rear end, a second roller 28 adapted to engage in a longitudinal guide

  29 with a U-shaped section or similar, arranged under the part

lower 14 of the headrest.

  This roller 28 is initially disposed at a

  short distance under the guide 29, and the engagement of the roller 28 in the guide 29 can be done for example by passing through an opening 30 of this guide, if the U-shaped section of the guide 29 has lower flaps folded one towards the other.

  The adjustable bed base which has just been described functions

operates as follows.

  From the horizontal position shown in FIG. 2, when a user actuates the rear button 12 so as to pivot the rear link 24 upwards under the action of the rear motor 17, only the upper part 13 of the headrest swivels first

  upwards around the articulation point 27 of the head

  since the roller 28 is initially located at a

  some distance below the headrest.

  It is only when the upper 13

  of the headrest makes a certain predetermined angle has differed

  rent 180 with the lower part 14 of the headrest that the roller 28 of the rear connecting rod 24 enters the profile 29 through its opening 30 (see Figure 3), and can begin to drive the entire headrest 10 towards the

high.

  If the user continues to pivot the rear link 24 upwards, the above-mentioned angle c remains constant, while the lower part 14 of the headrest forms an angle P other than 180 (see FIG. 4). It will be noted that the first and second sections 24a, 24b of the rear connecting rod extend respectively substantially parallel to the lower parts 14 and

  upper 13 of the headrest, so that the connecting rod ar-

  rière 24 is hardly visible when the headrest 10 is raised. This results in: - on the one hand, a gain in safety and reliability

  use of the adjustable bed base, since the connecting rod

  rière 24 is thus relatively protected against inter-

  ferences with external bodies, - and on the other hand, an improvement in appearance

aesthetic of the box spring.

  Furthermore, regardless of the setting of the po-

  angular position of the headrest 10, the user can

  tilt the entire sleeping surface by actuating the front control button 12, which makes it possible to raise the front end of the movable frame 20 by means of the front electric motor 17 and the front connecting rod 21, so that

  the movable frame 20 faces a non-zero angle y with the horizon-

tale.

  During this movement, the angles a and D above

  mentioned remain constant, so that the user retains the adjustment he may have made

  previously for the headrest 10.

  Furthermore, the fact that the engine block

  is carried by the movable frame 20 towards the middle of the

  mier 2 between its front and rear ends, and the fact that the front connecting rod 21 extends rearwards from

  the corresponding swivel bar 18, said motorcycle block

  rization 15 and said front connecting rod are relatively

  when the movable frame 20 is raised. As already indicated above for the headrest, this results in both a gain in safety and reliability.

  adjustable base, and an improvement in the aesthetic appearance of this base.

Claims (8)

  1. Adjustable bed base, with a frame   fixed (7) which extends in a longitudinal direction in   be a head end (5) and a foot end (4), this fixed frame carrying at least one movable frame (9) which comprises: - a headrest (10) extending in the longitudinal direction between, of share, a first end which is close to the head end (5) of the fixed frame,   and on the other hand, a second end which is located in-   be the head and foot ends of the fixed frame and which   is pivotally mounted around a transverse horizontal axis   sal, the headrest comprising means (31) for supporting a mattress (3) between its first and second ends,   - A movable frame (20) forming an assembly ri-   gide, which extends in the longitudinal direction between,   on the one hand, a first end which is located at the   calf of the headrest (10) and which is pivotally mounted on the fixed frame (7) around a transverse horizontal axis, and   on the other hand, a second end close to the extremi-   foot tee (4) of the fixed frame, the movable frame comprising means (31) for supporting a mattress between the headrest and the foot end of the fixed frame,   characterized in that it further comprises a block of motorcycles   rization (15) which comprises first and second electric motors (17) and which is carried by the movable frame (20), the first and second electric motors (17) respectively controlling the pivoting of the headrest (10) and the movable frame (7).   2. A bed base according to claim 1, in which   the second end of the headrest (10) is pivotally mounted aunt on the movable frame (20).   3. Bed base according to claim 1 or the claim   cation 2, in which the first end of the mo-   bile (20) is pivotally mounted on the fixed frame (7) at   near the head end (5) of said fixed frame.   4. Bed base according to any one of the preceding claims, in which a first connecting rod (21)   is pivotally mounted on the motor block (15) above   turn of a transverse horizontal axis and is controlled by the first electric motor (17), this first connecting rod extending to a free end (22) which is mounted   sliding relative to the fixed frame (7) to adjust the tilting of the movable frame (20).   5. Bed base according to claim 4, in which the motor block (15) is situated towards the middle of the bed base between the ends of the head and foot (4,5), and the first connecting rod (21) extends towards the 'rear to its free end (22) from said motor block (15).   6. Bed base according to any one of the claims.   previous tions, in which a second connecting rod (24)   is pivotally mounted on the motor block (15) above   turn of a transverse horizontal axis and is controlled by the second electric motor (17), this second connecting rod extending to a free end (25) which is slidably mounted on the headrest (10) to adjust the inclination of said headrest.   7. A bed base according to claim 6, in which the headrest (10) comprises an upper part (13) and a lower part (14) articulated together, the second connecting rod (24) being in the form of a rigid bent lever. which is arranged under the headrest and which comprises on the one hand, a first section (24a) extending from the motor unit (15) substantially in correspondence with the lower part (14) of the headrest, and on the other hand , a second section (24b) which extends obliquely upwards from the first section to the free end (25) of the second connecting rod, substantially in correspondence with the upper part (13) of the headrest, the first section comprising an intermediate support member (28) which is arranged to come into contact with the lower part (14) of the headrest in order to make it pivot,   only when said upper and lower parts   faceplate make a predetermined relative angle between them (c) less than 180 degrees, so that the   pivoting of the second connecting rod (24), from a po-   horizontal position of the headrest, firstly leads only-   a pivoting of the upper part (13) of the head   then a whole pivoting of the headrest (10).   8. Bed base according to claim 6 or the claim   cation 7, in which the first and second sections (24a, 24b) of the second connecting rod extend substantially parallel respectively to the lower part (14)   and to the upper part (13) of the headrest as soon as the   intermediate support gane (28) of said second connecting rod   is in contact with the lower part (14) of the head third.