EP1364600B1 - Stiffness adjustment system for bed base ball joint - Google Patents

Stiffness adjustment system for bed base ball joint Download PDF

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Publication number
EP1364600B1
EP1364600B1 EP03291216A EP03291216A EP1364600B1 EP 1364600 B1 EP1364600 B1 EP 1364600B1 EP 03291216 A EP03291216 A EP 03291216A EP 03291216 A EP03291216 A EP 03291216A EP 1364600 B1 EP1364600 B1 EP 1364600B1
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EP
European Patent Office
Prior art keywords
cam
arms
head
ball joint
footing
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Expired - Lifetime
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EP03291216A
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German (de)
French (fr)
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EP1364600A1 (en
Inventor
Marc Delahousse
Olivier Gregoire
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Delahousse et Fils SA
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Delahousse et Fils SA
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C23/00—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases
    • A47C23/06—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases using wooden springs, e.g. of slat type ; Slatted bed bases
    • A47C23/062—Slat supports
    • A47C23/063—Slat supports by elastic means, e.g. coil springs
    • A47C23/064—Slat supports by elastic means, e.g. coil springs by elastomeric springs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C23/00—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases
    • A47C23/06—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases using wooden springs, e.g. of slat type ; Slatted bed bases
    • A47C23/062—Slat supports
    • A47C23/067—Slat supports adjustable, e.g. in height or elasticity

Definitions

  • the present invention relates to the ball joints used as suspensions for the bed bases, and in particular a system for adjusting the firmness of these ball joints.
  • the ball joints are commonly used for slatted bed bases or bed bases of the multi-element type as described for example in the document EP-0 653 174 .
  • the present invention proposes an original arrangement of the patella and means that make it possible to modify at will its deformation capacity as well as its firmness, and this ball has the main advantage, of having in itself this possibility of modifying its characteristics. intrinsically.
  • the ball joint according to the invention is suitable for bed bases of the slatted type or of the multi-element type; it consists of: - a base which is arranged to be fixed on the structure of said bed frame, - a head which is arranged to accommodate and fix one or more slats or a tray, depending on the type of bed base, - d ' an elastic connection between said base and said head, arranged to allow a displacement of the latter towards the base according to at least one component perpendicular to this base, and this ball comprises, on the one hand, at said elastic connection, a first part consisting of rigid arms disposed V e, articulated on a plate which is integral with either said base or said head, and a second spring portion, which extends between the free ends of said arms and said head or said base as appropriate, and on the other hand, means for adjusting and controlling the amplitude of the movement of said rigid arms, so as to modify at will the displacement capacity of said head by reference t to said base and, consequently, the firm
  • these adjustment and control means of the firmness of the ball are integrated and give it a kind of universal character.
  • this ball joint according to the invention can be installed anywhere on the bed base and be adjusted in situ as required.
  • the constituent elements of the ball joint namely the base, the head and the elastic connection between the two, are in a one-piece form made of thermoplastic material of the elastomer type.
  • the means for adjusting and controlling the movement of the rigid arms, and in particular the opening of the angle of the Ve formed by the latter consist of at least one piece in the form of cam, whose position is adjustable as required, particularly between said arms and a bearing surface abutment, arranged either at the head or at the base as appropriate.
  • the cam is in the form of a U whose branches are arranged with a wedge or ramp profile, which cam is guided as a drawer and is centered on the connecting member which is interposed between the abutment bearing surface and the plate provided with rigid arm joints.
  • the internal flanks of the U-shaped cam comprise a kind of notch cooperating with the connecting member disposed between the abutment surface and the articulation plate of the arms, to establish at least two possibilities of adjusting the position of said cam.
  • the cam is in the form of a horseshoe, clipped on the connecting member interposed between the abutment bearing surface and the articulation plate of the arms, which connecting member is present in the form of a cylindrical pivot and the branches of said cam are arranged wedge or ramp manner, with a symmetry with respect to its axis of rotation.
  • the cam is in the form of a ring, interposed between the abutment bearing surface and the articulation plate of the arms, which ring is centered and manipulated by means of an axle which is guided in an orifice formed in said bearing surface, which axis is part of a member of the knob type for driving said cam in rotation, which cam is fitted with wedge or ramp-like profiles arranged symmetrically with respect to its axis of rotation.
  • the abutment bearing surface and the articulation plate of the rigid arms are integrally connected by means of at least one offset connecting wall thus forming a housing for the cam 'ring.
  • the rigid arms have, close to their articulation on the plate, lugs intended to bear on the appropriate profiles of the cams.
  • the profiles of the cams, corner or ramp are arranged in the form of resilient lamellae whose side located on the side of the sill, is located in the plane of the bearing surface of the latter for the permanently contacting said lamellae, which lamellae also serve as a return spring for holding the arms in the rest position.
  • the ball joint comprises a base 1, or in other words a sole, arranged to be fixed on the structure of a bed base 2, and a head 3 arranged to accommodate one or more slats 4 or a tray according to the type of bed base, c 'ie a slatted bed base or a multi-element bed base.
  • the base 1 and the head 3 are connected by an elastic connection 5.
  • This elastic connection 5 allows the head 3 to move relative to the base 1 according to at least one component perpendicular to the latter.
  • the firmness adjusting system 6 is located under the head 3, between the elastic connection 5 and this head 3. In the case of the figure 2 , the firmness adjusting system 6 is disposed between the base 1 and the elastic connection 5.
  • the elastic connection 5 consists of spring elements 10 schematically, on the Figures 1 and 2 , in the form of flexible blades. These elements are, figure 1 , two in number, interposed between the base 1 and arms 11. They are in the form of an ellipse portion for example.
  • the arms 11 constitute deformation levers of the spring elements 10. They are interposed between these spring elements 10 and the head 3, forming a kind of open Vee.
  • the arms 11 are articulated on a plate 12 which is integral with the head 3.
  • the joints 13 of the arms 11 on the plate 12 are relatively close to one another.
  • the free end 14 of these arms 11 is integral with the corresponding spring element 10.
  • the plate 12 serving for the articulation of the arms 11, is integral with the base 1.
  • the spring elements 10 are interposed between the free ends 14 of the arms 11 and the head 3.
  • the arms 11 form a kind of Ve and the angle ⁇ between these arms, varies according to their movement.
  • the amplitude of the movement of the arms 11 relative to the head 3, figure 1 , or with respect to the base 1, figure 2 is adjusted and controlled by means of the firmness control system 6.
  • This firmness adjustment system 6 comprises means consisting of at least one cam-shaped part 16 interposed between the arms 11 and a bearing surface 17 acting as a stop, located under the head 3 according to the embodiment of FIG. the figure 1 , and on the base 1 according to the embodiment of the figure 2 .
  • this ball joint can be installed anywhere on a bed base and, by a simple movement of the cams 16, the firmness adjustment can be achieved at will either directly during the making of the bed base, or by the user himself.
  • the figure 3 represents in a more concrete way an embodiment of the schematized patella figure 1 .
  • This patella represented figure 3 is a ball joint for slatted base, trilatte type.
  • This ball comprises a base 1 provided with orifices 21 to allow its attachment to the bed, by means of complementary pins for example (not shown).
  • This base can also be arranged, as shown in this figure, with a housing 22 to allow the embedding of the third slat 23 which is simply sketched.
  • the upper part of the ball consists of the head 3 which comprises laterally housing or end pieces 24 to accommodate the ends of the upper battens 4.
  • the elastic connection 5 consisting of arms 11 and spring elements 10.
  • the arms 11 are articulated on the plate 12; the joints 13 consist of a simple thinning of material.
  • the ball represented figure 3 , is in one-piece form, made of thermoplastic material of the elastomer type for its constituent elements namely the base 1, the head 3 and the elastic connection 5.
  • the element attached to this ball is constituted by the firmness control system 6 which comprises a cam-shaped part 16 generally and which is detailed in the following figures.
  • this cam is inserted between the head 3 and the elastic connection 5, that is to say between the bearing surface 17 provided under said head 3 and the plate 12 which carries the hinges of the arms 11.
  • the arms 11, as shown figure 3 are designed to transmit the movements of the head 3 to the spring elements 10. Note that the arms 11 and the spring elements 10 are monobloc.
  • the arm part 11 has a large section which gives it a certain rigidity while the part acting as a spring element 10 has a smaller and constant section; a section similar to the latter is also found at the joints 13 in particular.
  • the spring element 10 is in fact arranged between the arms 11 and complementary arms 25 which extend to the base 1 to which they are connected by a hinge 26 in the form of thinning.
  • the cam 16 is interposed between the upper surface of the plate 12 and the lower surface 17 of the head 3; this surface 17 acts as a bearing surface or abutment for said cam 16.
  • the cam 16 is installed on a connecting member which is interposed between the plate 12 and the crosspiece 31 of the head 3.
  • This connecting member is for example in the form of a cylindrical axis or pivot 30.
  • the arms 11 are in contact with the cam by means of protuberances or lugs 32 formed near the joints 13.
  • the capacity of the arms 11 to pivot about their articulation 13, is controlled by the cam 16. It is in fact the variation of the angle ⁇ , and its amplitude, which are regulated by the interaction of the cam 16 with chins 32.
  • the figure 5 illustrates another concrete embodiment of a ball joint which corresponds here to the diagram of the figure 2 .
  • This ball comprises a base 1 arranged to be fixed on the bed base 2.
  • the firmness adjustment system 6 is here located between this base 1 and the elastic connection 5.
  • This elastic connection 5 differs substantially from that of the diagram shown figure 2 at the level of the spring element itself, which consists of deformable ellipses 35.
  • the slats 4 are arranged in separate ends 24, which The end pieces are each associated with the spring element 35 in the shape of an ellipse.
  • These elliptical spring elements are interconnected by a cross member 37 located slightly above the major axis of these ellipses.
  • the articulated arms 11 are found on the plate 12 by means of hinges 13 constituted as before by a thinning of material.
  • These arms 11 in the form of rigid beams extend respectively to each of the ellipses 35, and are associated with the latter at their lower part.
  • the ends 14 of these arms 11 are located substantially vertically above the ends 24 of laths, on the minor axis of each ellipse 35.
  • the operation of the firmness adjustment system 6 corresponds exactly to that which is shown Figures 3 and 4 .
  • the cam 16 is interposed between - the bearing surface 17 abutting at the base 1, and - the plate 12 provided with the joints 13 of the arms 11.
  • the cam 16 is centered on the pin 30 in the form of an axis, which serves as a link between the plate 12 and the base 1.
  • FIG 6 shows the zone of the patella where the firmness adjustment system is located without the means which make it possible to carry out this adjustment, that is to say without the cam 16.
  • figure 6 corresponds to the figure 4 , without the cam 16.
  • This cam 16 is shown isolated on the Figures 7 and 8 , corresponding to one of the embodiments which will be detailed later.
  • the figure 7 shows the cam on the side of its surface which is in contact with the chins 32; the figure 8 shows the same cam on the side of its surface which is in contact with the bearing surface 17 arranged under the head 3 or, as the case may be, on the sole 1, for example in the cases shown figures 2 and 5 .
  • the figure 9 is a section according to 9-9 of the figure 6 , seen from above, showing the arms 11, the chins 32 on each of these arms 11, the plate 12 to which are connected the two arms 11 by means of the joints 13 which appear in dashed lines.
  • the connecting member 30 between the plate 12 and the head 3 of the ball joint appears, in section, the connecting member 30 between the plate 12 and the head 3 of the ball joint.
  • This cylindrical connecting member constitutes the pivot 30 of the cam 16 as shown Figures 7 and 8 .
  • This cam 16 is in the form of a horseshoe with an open central cylindrical cavity 40, whose input has a dimension substantially smaller than the diameter of said central cylindrical cavity 40 to allow its clipping on the pivot 30.
  • This cam 16 is positioned Figures 10 to 15 on the pivot 30.
  • the figure 10 shows the cam 16 in a particular extreme position in which it is totally inactive.
  • the figure 14 shows the cam 16 in an extreme position where it is fully active, that is to say that it has the effect of preventing any movement of the arms 11 relative to the head of the ball or to the base according to the case.
  • the cam 16 is represented figure 12 in an intermediate position which gives a certain freedom to the arms 11 and a certain angular deflection.
  • cam 16 comprises a finger 42 which allows the operator to manipulate and position it according to the desired firmness, in one of the previously detailed positions or in another intermediate position as appropriate.
  • the cam 16 comprises a central portion 43 forming an open tube portion-shaped hub, which matches the pivot 30.
  • the active part of the cam that is to say say profiles 44 arranged symmetrically with respect to the axis of rotation 46 of this cam. These profiles 44 correspond to a corner or a ramp which extends from a leading edge 47 of small thickness to a fictitious edge 48 where the thickness reaches the general thickness of the cam 16.
  • the amplitude of the movement of the cam, about its axis 46, is of the order of 80 to 90 ° for example.
  • axis L corresponding to the inactive position of the cam in which the lugs 32 are located as shown figure 10 in the free zones of the cam 16, that is to say outside the profiles 44; always figure 8 , one also observes the axis B which corresponds to the locking of the arms 11 as shown figure 14 where one observes the chins 32 positioned in areas of the cam 16 where its thickness is maximum, that is to say that its thickness corresponds to the space between the lugs 32 and the bearing surface 17 forming an abutment arranged either on the head 3 or on the sole 1 as appropriate.
  • These axes L and B are located on either side of the finger 42 which allows the maneuvers of the cam 16.
  • the cam 16 is in the intermediate position, that is to say that there is a possibility of angular movement of the arms 11.
  • the figure 16 shows the cam 16 of the horseshoe type as the one shown Figures 7 to 15 , with however a variant at the level of the profile of the ramp.
  • the ramp may be in the form of an elastic strip 50 which is partially detached from the hub 43.
  • This plate 50 is in contact with the corresponding lug 32 as soon as the cam is placed in the active position to adjust the amplitude the movement of the arms 11; this blade 50 also provides a spring effect to bring the arm 11 in the rest position.
  • this cam corresponds strictly to that which was previously detailed in connection with the Figures 6 to 15 .
  • the visible surface figure 16 of this cam corresponds to the surface which is in contact with the abutment surface 17 forming a stop either at the level of the head 3 or at the level of the sole 1.
  • the blade 50 may be constantly in contact with its lug 32. It may also have a limited stroke by means of a stop 51 for example. This stop 51 extends radially from the hub 43.
  • the figure 17 shows, in perspective, the patella corresponding to the figure 3 and schematically at the figure 1 equipped with a cam 16 as detailed figure 16 .
  • This cam 16 is integrated between the plate (not visible) support arm 11 and the head 3 of the ball and in particular under the crossbar 31 which extends between the two ends 24 which are housed in the ends of the slats 4.
  • the cam 16 is shown in a position corresponding to the intermediate position, that is to say that the arms 11 can pivot about their joints 13 with a limited amplitude which is of the order of half the amplitude that can be observed when the cam 16 is inactive position for example.
  • the figure 18 corresponds to a section of the kneecap shown figures 17 and 3 in a median vertical plane passing through the axis of the cam 16.
  • This cam 16 is interposed between the plate 12 which comprises the joints of the arms 11 and the bearing surface 17 forming a stop arranged under the head 3.
  • the figure 19 represents a variant of the cam.
  • This cam 16 ' is in the form of a U. It moves as a drawer relative to the ball joint, parallel to the alignment of the upper slats for example if it is slats.
  • the internal flanks of the central portion 43 'of the U comprise, facing inward, a notch 52 which cooperates with the pivot 30 of the ball which serves as a guide, to fix several positions of this cam and several types of amplitude for the movement of the arms 11.
  • the external profiles 44 'forming a ramp or corner, are detached from the central part of the U to provide, as explained above figure 16 , some elasticity at the cam. These profiles 44 'are also in the form of slats and are stressed by the lugs 32 arranged on the arms 11.
  • the figure 20 represents another variant of the cam.
  • This cam 16 is in the form of a ring with a central portion forming a hub 55 which is provided with a non-circular orifice 56 of the square or rectangular kind.
  • This orifice 56 cooperates with a drive square 57 as shown figure 21 .
  • This drive square 57 is part of a button or wheel 58 that can be operated by the operator to move the cam 16 "and adjust accordingly the amplitude of the travel of the arms 11.
  • This cam 16 “has a profile in the form of ramp or wedge constituted, as previously described Figures 19 and 16 60. When the cam is in the active position relative to the chins 32, these slats 60 may be in permanent contact with the chins.
  • These ramps in the form of lamellae may have a variable thickness or be constant as shown figure 19 or by means of studs 61 which project from the lamella as shown figure 20 .
  • the Figures 22 and 23 represent a ball of the type described figure 17 especially ; this ball is provided with a cam 16 "as shown figure 20 , operated by means of the button 58 as shown figure 21 .
  • the cam 16 " as shown figure 23 , is housed between the plate 12 provided with the hinges of the arms 11 and the abutment surface 17 forming a stop at the head 3 of the ball joint.
  • the axis of the cam 16 " is constituted by the operating square 57 fitted on the button 58, which button is guided and centered in a bore of the upper crossbar of the head 3.
  • This upper cross member 31 is connected to the plate 12 by means of a wall 63 which is offset on the outside of the ball, between the housing 24 provided to accommodate the ends of the slats.

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  • Orthopedics, Nursing, And Contraception (AREA)
  • Pivots And Pivotal Connections (AREA)

Abstract

The swivel joint comprises a base (1), a head (3) receiving the end of a lath (4) and a resilient connection (5) interposed between them. The resilient connection comprises rigid articulated arms (11) which act on springs (10) according to the displacement of the head. The amplitude of the arm is adjusted and controlled by a cam system (16).

Description

La présente invention concerne les rotules utilisées en tant que suspensions pour les sommiers, et en particulier un système de réglage de fermeté de ces rotules.The present invention relates to the ball joints used as suspensions for the bed bases, and in particular a system for adjusting the firmness of these ball joints.

Les rotules sont couramment utilisées pour des sommiers à lattes ou des sommiers du type multi-éléments comme décrits par exemple dans le document EP-0 653 174 .The ball joints are commonly used for slatted bed bases or bed bases of the multi-element type as described for example in the document EP-0 653 174 .

Dans le domaine des sommiers à lattes classiques, ou des sommiers du type multi-éléments, il est intéressant de pouvoir adapter la fermeté de l'élément de suspension, c'est-à-dire de la rotule, selon son emplacement sur le sommier.In the field of conventional slatted bedsteads, or sommiers of the multi-element type, it is interesting to be able to adapt the firmness of the suspension element, that is to say the patella, according to its location on the bed base .

Dans le document FR-2 793 125 par exemple, des aménagements particuliers sont prévus pour faire varier l'élasticité de la rotule. Cette rotule se présente sous la forme d'une structure monobloc munie de lames déformables faisant ressort. Les aménagements particuliers réalisés au niveau de ces lames ressorts permettent, avec l'aide de pièces rapportées et interchangeables, de modifier la capacité de déformation de ces lames ressorts et/ou de modifier leur élasticité par l'adjonction d'éléments ressorts complémentaires.In the document FR-2 793 125 for example, special arrangements are provided to vary the elasticity of the patella. This ball is in the form of a monobloc structure provided with deformable blades spring. The particular arrangements made at these leaf springs, with the help of inserts and interchangeable parts, make it possible to modify the deformation capacity of these leaf springs and / or to modify their elasticity by the addition of complementary spring elements.

La présente invention propose un aménagement original de la rotule et des moyens qui permettent de modifier à volonté sa capacité de déformation ainsi que sa fermeté, et cette rotule présente comme principal avantage, de posséder en elle-même cette possibilité de modification de ses caractéristiques de façon intrinsèque.The present invention proposes an original arrangement of the patella and means that make it possible to modify at will its deformation capacity as well as its firmness, and this ball has the main advantage, of having in itself this possibility of modifying its characteristics. intrinsically.

La rotule selon l'invention convient pour des sommiers du type à lattes ou du type multi-éléments ; elle est constituée : - d'une embase qui est aménagée pour être fixée sur la structure dudit sommier, - d'une tête qui est aménagée pour accueillir et fixer une ou plusieurs lattes ou un plateau, selon le type de sommier, - d'une liaison élastique entre ladite embase et ladite tête, aménagée pour permettre un déplacement de cette dernière vers l'embase selon au moins une composante perpendiculaire à cette embase, et cette rotule comporte, d'une part, au niveau de ladite liaison élastique, une première partie constituée de bras rigides disposés en Vé, articulés sur une platine qui est solidaire soit de ladite embase, soit de ladite tête, et une seconde partie formant ressort, qui s'étend entre les extrémités libres desdits bras et ladite tête ou ladite embase selon le cas, et d'autre part, des moyens pour régler et contrôler l'amplitude du mouvement desdits bras rigides, de façon à modifier à volonté la capacité de déplacement de ladite tête par rapport à ladite embase et, consécutivement, la fermeté de ladite rotule.The ball joint according to the invention is suitable for bed bases of the slatted type or of the multi-element type; it consists of: - a base which is arranged to be fixed on the structure of said bed frame, - a head which is arranged to accommodate and fix one or more slats or a tray, depending on the type of bed base, - d ' an elastic connection between said base and said head, arranged to allow a displacement of the latter towards the base according to at least one component perpendicular to this base, and this ball comprises, on the one hand, at said elastic connection, a first part consisting of rigid arms disposed V e, articulated on a plate which is integral with either said base or said head, and a second spring portion, which extends between the free ends of said arms and said head or said base as appropriate, and on the other hand, means for adjusting and controlling the amplitude of the movement of said rigid arms, so as to modify at will the displacement capacity of said head by reference t to said base and, consequently, the firmness of said ball joint.

Selon l'invention, ces moyens de réglage et de contrôle de la fermeté de la rotule sont intégrés et lui confèrent en quelque sorte un caractère universel. En effet, cette rotule selon l'invention peut être installée en tout endroit du sommier et être réglée in situ selon les nécessités.According to the invention, these adjustment and control means of the firmness of the ball are integrated and give it a kind of universal character. Indeed, this ball joint according to the invention can be installed anywhere on the bed base and be adjusted in situ as required.

Toujours selon l'invention, les éléments constitutifs de la rotule à savoir l'embase, la tête et la liaison élastique entre les deux, se présentent sous une forme monobloc réalisée en matériau thermoplastique du type élastomère.Still according to the invention, the constituent elements of the ball joint, namely the base, the head and the elastic connection between the two, are in a one-piece form made of thermoplastic material of the elastomer type.

Selon une disposition préférentielle de l'invention, les moyens de réglage et de contrôle du mouvement des bras rigides et en particulier de l'ouverture de l'angle du Vé formé par ces derniers, sont constitués d'au moins une pièce en forme de came, dont la position est réglable selon les besoins, en particulier entre lesdits bras et une surface d'appui faisant butée, aménagée soit au niveau de la tête, soit au niveau de l'embase selon le cas.According to a preferred embodiment of the invention, the means for adjusting and controlling the movement of the rigid arms, and in particular the opening of the angle of the Ve formed by the latter, consist of at least one piece in the form of cam, whose position is adjustable as required, particularly between said arms and a bearing surface abutment, arranged either at the head or at the base as appropriate.

Selon un premier mode de réalisation, la came se présente sous la forme d'un U dont les branches sont aménagées avec un profil façon coin ou rampe, laquelle came est guidée comme un tiroir et elle est centrée sur l'organe de liaison qui est interposé entre la surface d'appui faisant butée et la platine munie des articulations des bras rigides.According to a first embodiment, the cam is in the form of a U whose branches are arranged with a wedge or ramp profile, which cam is guided as a drawer and is centered on the connecting member which is interposed between the abutment bearing surface and the plate provided with rigid arm joints.

Toujours selon l'invention, les flancs internes de la came en forme de U comportent une sorte de crantage coopérant avec l'organe de liaison disposé entre la surface faisant butée et la platine d'articulation des bras, pour établir au moins deux possibilités de réglage de la position de ladite came.Still according to the invention, the internal flanks of the U-shaped cam comprise a kind of notch cooperating with the connecting member disposed between the abutment surface and the articulation plate of the arms, to establish at least two possibilities of adjusting the position of said cam.

Selon une variante de réalisation, la came se présente sous la forme d'un fer à cheval, clipsé sur l'organe de liaison interposé entre la surface d'appui faisant butée et la platine d'articulation des bras, lequel organe de liaison se présente sous la forme d'un pivot cylindrique et les branches de ladite came sont aménagées façon coin ou rampe, avec une symétrie par rapport à son axe de rotation.According to an alternative embodiment, the cam is in the form of a horseshoe, clipped on the connecting member interposed between the abutment bearing surface and the articulation plate of the arms, which connecting member is present in the form of a cylindrical pivot and the branches of said cam are arranged wedge or ramp manner, with a symmetry with respect to its axis of rotation.

Selon une autre variante de réalisation, la came se présente sous la forme d'un anneau, interposé entre la surface d'appui faisant butée et la platine d'articulation des bras, lequel anneau est centré et manoeuvré au moyen d'un axe qui est guidé dans un orifice formé dans ladite surface d'appui, lequel axe fait partie d'un organe du genre bouton pour entraîner ladite came en rotation, laquelle came est aménagée avec des profils façon coin ou rampe, disposés symétriquement par rapport à son axe de rotation.According to another variant embodiment, the cam is in the form of a ring, interposed between the abutment bearing surface and the articulation plate of the arms, which ring is centered and manipulated by means of an axle which is guided in an orifice formed in said bearing surface, which axis is part of a member of the knob type for driving said cam in rotation, which cam is fitted with wedge or ramp-like profiles arranged symmetrically with respect to its axis of rotation.

Toujours selon l'invention, la surface d'appui faisant butée et la platine d'articulation des bras rigides, sont liées de façon monobloc, au moyen d'au moins une paroi de liaison décalée formant ainsi un logement pour la came en forme d'anneau.Still according to the invention, the abutment bearing surface and the articulation plate of the rigid arms are integrally connected by means of at least one offset connecting wall thus forming a housing for the cam 'ring.

Toujours selon l'invention, les bras rigides comportent, à proximité de leur articulation sur la platine, des mentonnets destinés à prendre appui sur les profils appropriés des cames.Still according to the invention, the rigid arms have, close to their articulation on the plate, lugs intended to bear on the appropriate profiles of the cams.

Selon une autre disposition de l'invention, les profils des cames, façon coin ou rampe, sont aménagés sous la forme de lamelles élastiques dont la face située côté mentonnet, se situe dans le plan de la surface d'appui de ces derniers pour les mettre en contact de façon permanente avec lesdites lamelles, lesquelles lamelles font également office de ressort de rappel pour maintenir les bras en position repos.According to another embodiment of the invention, the profiles of the cams, corner or ramp, are arranged in the form of resilient lamellae whose side located on the side of the sill, is located in the plane of the bearing surface of the latter for the permanently contacting said lamellae, which lamellae also serve as a return spring for holding the arms in the rest position.

L'invention sera encore détaillée à l'aide de la description suivante et des dessins annexés, donnés à titre indicatif, et dans lesquels :

  • la figure 1 représente, sous la forme d'un schéma fonctionnel, une rotule selon l'invention correspondant à un premier mode de réalisation ;
  • la figure 2 représente une rotule, toujours sous la forme de schéma fonctionnel, correspondant à un second mode de réalisation ;
  • la figure 3 représente concrètement, une rotule pour sommier à lattes, correspondant à la rotule schématisée figure 1, cette rotule est représentée sous la forme d'une coupe selon 3-3 de la figure 18 ;
  • la figure 4 représente, d'une façon plus détaillée et en coupe, l'aménagement de la rotule au niveau de la came de réglage de fermeté ;
  • la figure 5 représente concrètement une rotule qui correspond au mode de réalisation schématisé figure 2 ;
  • les figures 6 à 15 illustrent le fonctionnement du système de réglage de fermeté selon l'invention, avec une came qui se présente en forme de fer à cheval ;
  • la figure 16 représente, en perspective, la came du système de réglage de fermeté, en forme de fer à cheval ;
  • la figure 17 représente, en perspective, la rotule de la figure 3, en perspective, faisant apparaître la came du système de réglage de fermeté ;
  • la figure 18 représente une coupe de la rotule de la figure 17 et de la figure 3, selon 18-18 de la figure 3 ;
  • la figure 19 représente une variante de réalisation de la came du système de réglage de fermeté, en forme de U ;
  • la figure 20 représente une autre variante de la came, en forme d'anneau ;
  • la figure 21 représente, en perspective, le bouton de manoeuvre de la came représentée figure 20 ;
  • la figure 22 représente une rotule comportant un système de réglage de fermeté constitué d'une came en forme d'anneau comme représenté figure 20, et d'un bouton de manoeuvre comme représenté figure 21 ;
  • la figure 23 est une vue en coupe selon un plan médian vertical, de la rotule représentée figure 22.
The invention will be further detailed with the aid of the following description and accompanying drawings, given for information only, and in which:
  • the figure 1 represents, in the form of a block diagram, a ball joint according to the invention corresponding to a first embodiment;
  • the figure 2 represents a ball joint, still in the form of a block diagram, corresponding to a second embodiment;
  • the figure 3 concretely represents a ball joint for slatted base, corresponding to the schematized kneecap figure 1 , this ball is represented in the form of a section along 3-3 of the figure 18 ;
  • the figure 4 shows, in more detail and in section, the arrangement of the ball at the leveling cam;
  • the figure 5 concretely represents a ball joint which corresponds to the schematized embodiment figure 2 ;
  • the Figures 6 to 15 illustrate the operation of the firmness control system according to the invention, with a cam which is in the form of horseshoe;
  • the figure 16 represents, in perspective, the cam of the firmness adjustment system, shaped like a horseshoe;
  • the figure 17 represents, in perspective, the patella of the figure 3 in perspective, showing the cam of the firmness control system;
  • the figure 18 represents a section of the patella of the figure 17 and some figure 3 , according to 18-18 of the figure 3 ;
  • the figure 19 represents an alternative embodiment of the cam of the U-shaped firmness control system;
  • the figure 20 represents another variant of the cam, in the form of a ring;
  • the figure 21 represents, in perspective, the operating knob of the cam shown figure 20 ;
  • the figure 22 represents a ball joint comprising a firmness adjustment system consisting of a ring-shaped cam as shown figure 20 , and a maneuver knob as shown figure 21 ;
  • the figure 23 is a sectional view along a vertical median plane, of the patella shown figure 22 .

Telle que représentée figures 1 et 2, la rotule comprend une embase 1, ou autrement dit une semelle, aménagée pour être fixée sur la structure d'un sommier 2, et une tête 3 aménagée pour accueillir une ou plusieurs lattes 4 ou encore un plateau selon le type de sommier, c'est-à-dire un sommier à lattes ou un sommier multi-éléments.As represented Figures 1 and 2 , the ball joint comprises a base 1, or in other words a sole, arranged to be fixed on the structure of a bed base 2, and a head 3 arranged to accommodate one or more slats 4 or a tray according to the type of bed base, c 'ie a slatted bed base or a multi-element bed base.

L'embase 1 et la tête 3 sont reliées par une liaison élastique 5. Cette liaison élastique 5 permet à la tête 3 de se déplacer par rapport à l'embase 1 selon au moins une composante perpendiculaire à cette dernière.The base 1 and the head 3 are connected by an elastic connection 5. This elastic connection 5 allows the head 3 to move relative to the base 1 according to at least one component perpendicular to the latter.

Dans le cas de la figure 1, le système de réglage de fermeté 6 est situé sous la tête 3, entre la liaison élastique 5 et cette tête 3. Dans le cas de la figure 2, le système de réglage de fermeté 6 est disposé entre l'embase 1 et la liaison élastique 5.In the case of figure 1 , the firmness adjusting system 6 is located under the head 3, between the elastic connection 5 and this head 3. In the case of the figure 2 , the firmness adjusting system 6 is disposed between the base 1 and the elastic connection 5.

La liaison élastique 5 est constituée d'éléments ressorts 10 schématisés, sur les figures 1 et 2, sous la forme de lames flexibles. Ces éléments 10 sont, figure 1, au nombre de deux, interposés entre l'embase 1 et des bras 11. Ils se présentent sous la forme d'une portion d'ellipse par exemple.The elastic connection 5 consists of spring elements 10 schematically, on the Figures 1 and 2 , in the form of flexible blades. These elements are, figure 1 , two in number, interposed between the base 1 and arms 11. They are in the form of an ellipse portion for example.

Les bras 11 constituent des leviers de déformation des éléments ressorts 10. Ils sont interposés entre ces éléments ressorts 10 et la tête 3, formant une sorte de Vé ouvert.
Les bras 11 sont articulés sur une platine 12 qui est solidaire de la tête 3. Les articulations 13 des bras 11 sur la platine 12 sont relativement proches l'une de l'autre. L'extrémité libre 14 de ces bras 11 est solidaire de l'élément ressort 10 correspondant.The arms 11 constitute deformation levers of the spring elements 10. They are interposed between these spring elements 10 and the head 3, forming a kind of open Vee.
The arms 11 are articulated on a plate 12 which is integral with the head 3. The joints 13 of the arms 11 on the plate 12 are relatively close to one another. The free end 14 of these arms 11 is integral with the corresponding spring element 10.

Selon le mode de réalisation de la figure 2, la platine 12 servant à l'articulation des bras 11, est solidaire de l'embase 1. Les éléments ressorts 10 sont interposés entre les extrémités libres 14 des bras 11 et la tête 3.According to the embodiment of the figure 2 , the plate 12 serving for the articulation of the arms 11, is integral with the base 1. The spring elements 10 are interposed between the free ends 14 of the arms 11 and the head 3.

Dans les deux formes de réalisation décrites ci-dessus, en relation avec les figures 1 et 2, le mouvement de la tête 3 s'accompagne d'un mouvement des bras 11, et en particulier d'un pivotement de ces bras 11 autour de leurs axes d'articulation 13 respectifs et, en même temps, on observe une déformation des éléments ressorts 10.In the two embodiments described above, in relation to the Figures 1 and 2 the movement of the head 3 is accompanied by a movement of the arms 11, and in particular by a pivoting of these arms 11 around their respective hinge axes 13, and at the same time a deformation of the elements is observed. springs 10.

Les bras 11 forment une sorte de Vé et l'angle α entre ces bras, varie selon leur mouvement.
L'amplitude du mouvement des bras 11 par rapport à la tête 3, figure 1, ou par rapport à l'embase 1, figure 2, est réglée et contrôlée au moyen du système de réglage de fermeté 6.The arms 11 form a kind of Ve and the angle α between these arms, varies according to their movement.
The amplitude of the movement of the arms 11 relative to the head 3, figure 1 , or with respect to the base 1, figure 2 , is adjusted and controlled by means of the firmness control system 6.

Ce système de réglage de fermeté 6 comprend des moyens constitués d'au moins une pièce en forme de came 16 interposée entre les bras 11 et une surface d'appui 17 faisant office de butée, située sous la tête 3 selon le mode de réalisation de la figure 1, et sur l'embase 1 selon le mode de réalisation de la figure 2.This firmness adjustment system 6 comprises means consisting of at least one cam-shaped part 16 interposed between the arms 11 and a bearing surface 17 acting as a stop, located under the head 3 according to the embodiment of FIG. the figure 1 , and on the base 1 according to the embodiment of the figure 2 .

On conçoit que le déplacement des cames 16 sous la tête 3 ou sur l'embase 1, permet de modifier la capacité de mouvement des bras 11 et en particulier l'amplitude de leur mouvement angulaire autour de leurs articulations respectives 13. Ce contrôle du mouvement des bras 11 influe sur la capacité de déformation des éléments élastiques 10 et permet de contrôler la fermeté de la rotule.It is conceivable that the displacement of the cams 16 under the head 3 or on the base 1, makes it possible to modify the movement capacity of the arms 11 and in particular the amplitude of their angular movement around their respective articulations 13. This control of the movement arm 11 influences the deformation capacity of the elastic elements 10 and allows to control the firmness of the patella.

Ainsi, cette rotule, selon le mode de réalisation des figures 1 et 2, peut être installée partout sur un sommier et, par un simple déplacement des cames 16, le réglage de fermeté peut être réalisé à volonté soit directement lors de la confection du sommier, soit par l'utilisateur lui-même.Thus, this ball joint, according to the embodiment of the Figures 1 and 2 , can be installed anywhere on a bed base and, by a simple movement of the cams 16, the firmness adjustment can be achieved at will either directly during the making of the bed base, or by the user himself.

La figure 3 représente d'une façon plus concrète un mode de réalisation de la rotule schématisée figure 1.The figure 3 represents in a more concrete way an embodiment of the schematized patella figure 1 .

Cette rotule représentée figure 3 est une rotule pour sommier à lattes, du type trilattes.This patella represented figure 3 is a ball joint for slatted base, trilatte type.

Cette rotule comprend une embase 1 munie d'orifices 21 pour permettre sa fixation sur le sommier, au moyen de tenons complémentaires par exemple (non représentés). Cette embase peut également être aménagée, comme représenté sur la présente figure, avec un logement 22 pour permettre l'encastrement de la troisième latte 23 qui est simplement esquissée.This ball comprises a base 1 provided with orifices 21 to allow its attachment to the bed, by means of complementary pins for example (not shown). This base can also be arranged, as shown in this figure, with a housing 22 to allow the embedding of the third slat 23 which is simply sketched.

La partie supérieure de la rotule est constituée de la tête 3 qui comprend, latéralement, des logements ou embouts 24 pour accueillir les extrémités des lattes supérieures 4.The upper part of the ball consists of the head 3 which comprises laterally housing or end pieces 24 to accommodate the ends of the upper battens 4.

Entre la tête 3 et l'embase 1 on retrouve la liaison élastique 5 constituée des bras 11 et des éléments ressorts 10. Les bras 11 sont articulés sur la platine 12 ; les articulations 13 sont constituées d'un simple amincissement de matière.Between the head 3 and the base 1 there is the elastic connection 5 consisting of arms 11 and spring elements 10. The arms 11 are articulated on the plate 12; the joints 13 consist of a simple thinning of material.

La rotule, représentée figure 3, se présente sous une forme monobloc, réalisée en matériau thermoplastique du type élastomère pour ses éléments constitutifs à savoir l'embase 1, la tête 3 et la liaison élastique 5.The ball, represented figure 3 , is in one-piece form, made of thermoplastic material of the elastomer type for its constituent elements namely the base 1, the head 3 and the elastic connection 5.

L'élément rapporté au niveau de cette rotule est constitué du système de réglage de fermeté 6 qui comprend une pièce en forme de came repérée 16 d'une manière générale et qui est détaillée sur les figures suivantes.The element attached to this ball is constituted by the firmness control system 6 which comprises a cam-shaped part 16 generally and which is detailed in the following figures.

Dans le mode de réalisation de la figure 3, cette came s'insère entre la tête 3 et la liaison élastique 5 c'est-à-dire entre la surface d'appui 17 aménagée sous ladite tête 3 et la platine 12 qui porte les articulations des bras 11.In the embodiment of the figure 3 this cam is inserted between the head 3 and the elastic connection 5, that is to say between the bearing surface 17 provided under said head 3 and the plate 12 which carries the hinges of the arms 11.

Les bras 11, comme représentés figure 3, sont conçus pour transmettre les mouvements de la tête 3 aux éléments ressorts 10. On remarque que les bras 11 et les éléments ressorts 10 sont monoblocs. La partie faisant office de bras 11 a une section importante qui lui confère une certaine rigidité alors que la partie faisant office d'élément ressort 10 a une section plus faible et constante ; une section similaire à cette dernière se retrouve d'ailleurs au niveau des articulations 13 notamment.The arms 11, as shown figure 3 , are designed to transmit the movements of the head 3 to the spring elements 10. Note that the arms 11 and the spring elements 10 are monobloc. The arm part 11 has a large section which gives it a certain rigidity while the part acting as a spring element 10 has a smaller and constant section; a section similar to the latter is also found at the joints 13 in particular.

Toujours dans le cas de la figure 3, l'élément ressort 10 est en fait aménagé entre les bras 11 et des bras complémentaires 25 qui s'étendent jusqu'à l'embase 1 à laquelle ils sont reliés par une articulation 26 en forme d'amincissement.Still in the case of the figure 3 , the spring element 10 is in fact arranged between the arms 11 and complementary arms 25 which extend to the base 1 to which they are connected by a hinge 26 in the form of thinning.

Comme détaillé figure 4, la came 16 est interposée entre la surface supérieure de la platine 12 et la surface inférieure 17 de la tête 3 ; cette surface 17 fait office de surface d'appui ou butée pour ladite came 16.As detailed figure 4 the cam 16 is interposed between the upper surface of the plate 12 and the lower surface 17 of the head 3; this surface 17 acts as a bearing surface or abutment for said cam 16.

Comme détaillé plus loin, et selon les modes de réalisation, la came 16 est installée sur un organe de liaison qui est interposé entre la platine 12 et la traverse 31 de la tête 3. Cet organe de liaison se présente par exemple sous la forme d'un axe ou pivot cylindrique 30.As detailed below, and according to the embodiments, the cam 16 is installed on a connecting member which is interposed between the plate 12 and the crosspiece 31 of the head 3. This connecting member is for example in the form of a cylindrical axis or pivot 30.

Les bras 11 sont en contact avec la came au moyen de protubérances ou mentonnets 32 façonnés à proximité des articulations 13.The arms 11 are in contact with the cam by means of protuberances or lugs 32 formed near the joints 13.

La capacité des bras 11 à pivoter autour de leur articulation 13, est contrôlée par la came 16. C'est en fait la variation de l'angle α, et son amplitude, qui sont réglées par l'interaction de la came 16 avec des mentonnets 32.The capacity of the arms 11 to pivot about their articulation 13, is controlled by the cam 16. It is in fact the variation of the angle α, and its amplitude, which are regulated by the interaction of the cam 16 with chins 32.

La figure 5 illustre un autre mode de réalisation concret d'une rotule qui correspond ici au schéma de la figure 2.The figure 5 illustrates another concrete embodiment of a ball joint which corresponds here to the diagram of the figure 2 .

Cette rotule comporte une embase 1 aménagée pour être fixée sur le sommier 2. Le système de réglage de fermeté 6 est ici situé entre cette embase 1 et la liaison élastique 5.
Cette liaison élastique 5 se distingue sensiblement de celle du schéma représenté figure 2, au niveau de l'élément ressort proprement dit qui est constitué d'ellipses déformables 35. Les lattes 4 sont disposées dans des embouts 24 séparés, lesquels embouts sont chacun associés à l'élément ressort 35 en forme d'ellipse. Ces éléments ressorts en forme d'ellipses sont reliés entre eux par une traverse 37 située légèrement au-dessus du grand axe de ces ellipses.
On retrouve les bras 11 articulés sur la platine 12 au moyen d'articulations 13 constituées comme précédemment d'un amincissement de matière. Ces bras 11 en forme de poutres rigides, s'étendent respectivement vers chacune des ellipses 35, et sont associés à ces dernières à leur partie inférieure. Les extrémités 14 de ces bras 11 se situent sensiblement à l'aplomb des embouts 24 de lattes, sur le petit axe de chaque ellipse 35.This ball comprises a base 1 arranged to be fixed on the bed base 2. The firmness adjustment system 6 is here located between this base 1 and the elastic connection 5.
This elastic connection 5 differs substantially from that of the diagram shown figure 2 at the level of the spring element itself, which consists of deformable ellipses 35. The slats 4 are arranged in separate ends 24, which The end pieces are each associated with the spring element 35 in the shape of an ellipse. These elliptical spring elements are interconnected by a cross member 37 located slightly above the major axis of these ellipses.
The articulated arms 11 are found on the plate 12 by means of hinges 13 constituted as before by a thinning of material. These arms 11 in the form of rigid beams extend respectively to each of the ellipses 35, and are associated with the latter at their lower part. The ends 14 of these arms 11 are located substantially vertically above the ends 24 of laths, on the minor axis of each ellipse 35.

Le fonctionnement du système de réglage de fermeté 6 correspond exactement à celui qui est représenté figures 3 et 4. La came 16 est interposée entre - la surface d'appui 17 faisant butée au niveau de l'embase 1, et - la platine 12 munie des articulations 13 des bras 11. Les mentonnets 32 aménagés sur les bras 11, à proximité des articulations 13 de ces derniers, prennent appui sur la came 16.The operation of the firmness adjustment system 6 corresponds exactly to that which is shown Figures 3 and 4 . The cam 16 is interposed between - the bearing surface 17 abutting at the base 1, and - the plate 12 provided with the joints 13 of the arms 11. The lugs 32 arranged on the arms 11, close to the joints 13 of these, rest on the cam 16.

Comme précédemment, la came 16 est centrée sur le pivot 30 en forme d'axe, qui sert de liaison entre la platine 12 et l'embase 1.As before, the cam 16 is centered on the pin 30 in the form of an axis, which serves as a link between the plate 12 and the base 1.

La figure 6 montre la zone de la rotule où se situe le système de réglage de fermeté sans les moyens qui permettent d'effectuer ce réglage, c'est-à-dire sans la came 16. Cette figure 6 correspond à la figure 4, sans la came 16. Cette came 16 est représentée isolée sur les figures 7 et 8, correspondant à l'un des modes de réalisation qui sera détaillé plus loin.The figure 6 shows the zone of the patella where the firmness adjustment system is located without the means which make it possible to carry out this adjustment, that is to say without the cam 16. figure 6 corresponds to the figure 4 , without the cam 16. This cam 16 is shown isolated on the Figures 7 and 8 , corresponding to one of the embodiments which will be detailed later.

La figure 7 montre la came du côté de sa surface qui est en contact avec les mentonnets 32 ; la figure 8 montre la même came du côté de sa surface qui est en contact avec la surface d'appui 17 aménagée sous la tête 3 ou, selon le cas, sur la semelle 1 comme par exemple dans les cas représentés figures 2 et 5.The figure 7 shows the cam on the side of its surface which is in contact with the chins 32; the figure 8 shows the same cam on the side of its surface which is in contact with the bearing surface 17 arranged under the head 3 or, as the case may be, on the sole 1, for example in the cases shown figures 2 and 5 .

La figure 9 est une coupe selon 9-9 de la figure 6, vue de dessus, montrant les bras 11, les mentonnets 32 sur chacun de ces bras 11, la platine 12 à laquelle sont liés les deux bras 11 au moyen des articulations 13 qui apparaissent en traits pointillés. Toujours sur cette figure 9, apparaît, en coupe, l'organe de liaison 30 entre la platine 12 et la tête 3 de la rotule. Cet organe de liaison de forme cylindrique, constitue le pivot 30 de la came 16 telle que représentée figures 7 et 8.The figure 9 is a section according to 9-9 of the figure 6 , seen from above, showing the arms 11, the chins 32 on each of these arms 11, the plate 12 to which are connected the two arms 11 by means of the joints 13 which appear in dashed lines. Always on this figure 9 , appears, in section, the connecting member 30 between the plate 12 and the head 3 of the ball joint. This cylindrical connecting member constitutes the pivot 30 of the cam 16 as shown Figures 7 and 8 .

Cette came 16 se présente sous la forme d'un fer à cheval avec une cavité centrale cylindrique 40 ouverte, dont l'entrée a une dimension sensiblement inférieure au diamètre de ladite cavité centrale cylindrique 40 pour permettre son clipsage sur le pivot 30.This cam 16 is in the form of a horseshoe with an open central cylindrical cavity 40, whose input has a dimension substantially smaller than the diameter of said central cylindrical cavity 40 to allow its clipping on the pivot 30.

Cette came 16 est positionnée figures 10 à 15 sur le pivot 30. La figure 10 montre la came 16 dans une position particulière extrême dans laquelle elle est totalement inactive. La figure 14 montre la came 16 dans une position extrême où elle est active totalement, c'est-à-dire qu'elle a pour effet d'empêcher tout mouvement des bras 11 par rapport à la tête de la rotule ou à l'embase selon le cas.This cam 16 is positioned Figures 10 to 15 on the pivot 30. The figure 10 shows the cam 16 in a particular extreme position in which it is totally inactive. The figure 14 shows the cam 16 in an extreme position where it is fully active, that is to say that it has the effect of preventing any movement of the arms 11 relative to the head of the ball or to the base according to the case.

Entre ces deux cas extrêmes, la came 16 est représentée figure 12 dans une position intermédiaire qui confère une certaine liberté aux bras 11 et un certain débattement angulaire.Between these two extreme cases, the cam 16 is represented figure 12 in an intermediate position which gives a certain freedom to the arms 11 and a certain angular deflection.

On observe encore que la came 16 comporte un doigt 42 qui permet à l'opérateur de la manipuler et de la positionner selon la fermeté souhaitée, dans l'une des positions détaillées précédemment ou encore dans une autre position intermédiaire selon le cas.It is also observed that the cam 16 comprises a finger 42 which allows the operator to manipulate and position it according to the desired firmness, in one of the previously detailed positions or in another intermediate position as appropriate.

D'autre part, la came 16 comporte une partie centrale 43 formant un moyeu en forme de portion de tube ouvert, qui épouse le pivot 30. Autour de cette partie centrale, on trouve la partie active de la came, c'est-à-dire des profils 44 disposés symétriquement par rapport à l'axe de rotation 46 de cette came. Ces profils 44 correspondent à un coin ou une rampe qui s'étend d'un bord d'attaque 47 de faible épaisseur jusqu'à une arête fictive 48 où l'épaisseur atteint l'épaisseur générale de la came 16.On the other hand, the cam 16 comprises a central portion 43 forming an open tube portion-shaped hub, which matches the pivot 30. Around this central part, there is the active part of the cam, that is to say say profiles 44 arranged symmetrically with respect to the axis of rotation 46 of this cam. These profiles 44 correspond to a corner or a ramp which extends from a leading edge 47 of small thickness to a fictitious edge 48 where the thickness reaches the general thickness of the cam 16.

L'amplitude du mouvement de la came, autour de son axe 46, est de l'ordre de 80 à 90° par exemple. Comme représenté figure 8, on observe l'axe L correspondant à la position inactive de la came dans laquelle les mentonnets 32 sont situés comme représenté figure 10, dans les zones libres de la came 16 c'est-à-dire en dehors des profils 44 ; toujours figure 8, on observe également l'axe B qui correspond au blocage des bras 11 comme représenté figure 14 où l'on observe les mentonnets 32 positionnés dans des zones de la came 16 où son épaisseur est maximale, c'est-à-dire que son épaisseur correspond à l'espace entre les mentonnets 32 et la surface d'appui 17 formant butée aménagée soit sur la tête 3, soit sur la semelle 1 selon le cas. Ces axes L et B, se situent de part et d'autre du doigt 42 qui permet les manoeuvres de la came 16.The amplitude of the movement of the cam, about its axis 46, is of the order of 80 to 90 ° for example. As shown figure 8 , we observe the axis L corresponding to the inactive position of the cam in which the lugs 32 are located as shown figure 10 in the free zones of the cam 16, that is to say outside the profiles 44; always figure 8 , one also observes the axis B which corresponds to the locking of the arms 11 as shown figure 14 where one observes the chins 32 positioned in areas of the cam 16 where its thickness is maximum, that is to say that its thickness corresponds to the space between the lugs 32 and the bearing surface 17 forming an abutment arranged either on the head 3 or on the sole 1 as appropriate. These axes L and B , are located on either side of the finger 42 which allows the maneuvers of the cam 16.

Tel que représenté sur les figures 12 et 13, la came 16 est en position intermédiaire c'est-à-dire qu'il existe une possibilité de débattement angulaire des bras 11. Un espace E existe entre les mentonnets 32 et chaque rampe des profils 44 de la came.As shown on the Figures 12 and 13 , the cam 16 is in the intermediate position, that is to say that there is a possibility of angular movement of the arms 11. A space E exists between the lugs 32 and each ramp of the profiles 44 of the cam.

La figure 16 montre la came 16 du type fer à cheval comme celle représentée figures 7 à 15, avec cependant une variante au niveau du profil de la rampe.The figure 16 shows the cam 16 of the horseshoe type as the one shown Figures 7 to 15 , with however a variant at the level of the profile of the ramp.

En effet, la rampe peut se présenter sous la forme d'une lamelle élastique 50 qui est partiellement détachée du moyeu 43. Cette lamelle 50 est en contact avec le mentonnet 32 correspondant dès que la came est placée en position active pour régler l'amplitude du mouvement des bras 11 ; cette lamelle 50 procure également un effet ressort visant à ramener les bras 11 en position repos.Indeed, the ramp may be in the form of an elastic strip 50 which is partially detached from the hub 43. This plate 50 is in contact with the corresponding lug 32 as soon as the cam is placed in the active position to adjust the amplitude the movement of the arms 11; this blade 50 also provides a spring effect to bring the arm 11 in the rest position.

Le fonctionnement de cette came correspond strictement à celui qui a été détaillé auparavant en liaison avec les figures 6 à 15. La surface visible figure 16 de cette came correspond à la surface qui est en contact avec la surface d'appui 17 formant butée soit au niveau de la tête 3, soit au niveau de la semelle 1.The operation of this cam corresponds strictly to that which was previously detailed in connection with the Figures 6 to 15 . The visible surface figure 16 of this cam corresponds to the surface which is in contact with the abutment surface 17 forming a stop either at the level of the head 3 or at the level of the sole 1.

A noter aussi que la lamelle 50 peut être constamment en contact avec son mentonnet 32. Elle peut aussi avoir une course limitée au moyen d'une butée 51 par exemple. Cette butée 51 s'étend radialement à partir du moyeu 43.Note also that the blade 50 may be constantly in contact with its lug 32. It may also have a limited stroke by means of a stop 51 for example. This stop 51 extends radially from the hub 43.

La figure 17 montre, en perspective, la rotule correspondant à la figure 3 et schématiquement à la figure 1, équipée d'une came 16 telle que détaillée figure 16.The figure 17 shows, in perspective, the patella corresponding to the figure 3 and schematically at the figure 1 equipped with a cam 16 as detailed figure 16 .

Cette came 16 est intégrée entre la platine (non visible) support des bras 11 et la tête 3 de la rotule et en particulier sous la traverse 31 qui s'étend entre les deux embouts 24 où se logent les extrémités des lattes 4.This cam 16 is integrated between the plate (not visible) support arm 11 and the head 3 of the ball and in particular under the crossbar 31 which extends between the two ends 24 which are housed in the ends of the slats 4.

La came 16 est représentée dans une position qui correspond à la position intermédiaire, c'est-à-dire que les bras 11 peuvent pivoter autour de leurs articulations 13 avec une amplitude limitée qui est de l'ordre de la moitié de l'amplitude que l'on peut observer lorsque la came 16 est en position inactive par exemple.The cam 16 is shown in a position corresponding to the intermediate position, that is to say that the arms 11 can pivot about their joints 13 with a limited amplitude which is of the order of half the amplitude that can be observed when the cam 16 is inactive position for example.

La figure 18 correspond à une coupe de la rotule représentée figures 17 et 3 selon un plan vertical médian passant par l'axe de la came 16. Cette came 16 est interposée entre le plateau 12 qui comporte les articulations des bras 11 et la surface d'appui 17 formant butée aménagée sous la tête 3.The figure 18 corresponds to a section of the kneecap shown figures 17 and 3 in a median vertical plane passing through the axis of the cam 16. This cam 16 is interposed between the plate 12 which comprises the joints of the arms 11 and the bearing surface 17 forming a stop arranged under the head 3.

On remarque figure 17 et figure 18, le logement 22 permettant d'installer une troisième latte, lequel logement se situe au niveau de la semelle 1 de la rotule, entre les orifices 21 qui permettent le passage des tenons de fixation.We notice Figure 17 and Figure 18 , the housing 22 for installing a third batten, which housing is located at the sole 1 of the ball joint, between the orifices 21 which allow the passage of the fastening lugs.

La figure 19 représente une variante de la came. Cette came 16' se présente sous la forme d'un U. Elle se déplace comme un tiroir par rapport à la rotule, parallèlement à l'alignement des lattes supérieures par exemple s'il s'agit de lattes.The figure 19 represents a variant of the cam. This cam 16 'is in the form of a U. It moves as a drawer relative to the ball joint, parallel to the alignment of the upper slats for example if it is slats.

Les flancs internes de la partie centrale 43' du U comportent, tourné vers l'intérieur, un crantage 52 qui coopère avec le pivot 30 de la rotule qui sert de guide, pour fixer plusieurs positions de cette came et plusieurs types d'amplitude pour le mouvement des bras 11.The internal flanks of the central portion 43 'of the U comprise, facing inward, a notch 52 which cooperates with the pivot 30 of the ball which serves as a guide, to fix several positions of this cam and several types of amplitude for the movement of the arms 11.

Les profils externes 44' formant rampe ou coin, sont détachés de la partie centrale du U pour procurer, comme expliqué précédemment figure 16, une certaine élasticité au niveau de la came. Ces profils 44' se présentent également sous la forme de lamelles et sont sollicités par les mentonnets 32 aménagés sur les bras 11.The external profiles 44 'forming a ramp or corner, are detached from the central part of the U to provide, as explained above figure 16 , some elasticity at the cam. These profiles 44 'are also in the form of slats and are stressed by the lugs 32 arranged on the arms 11.

La figure 20 représente une autre variante de la came. Cette came 16" se présente sous la forme d'un anneau avec une partie centrale formant un moyeu 55 qui est muni d'un orifice 56 non circulaire du genre carré ou rectangulaire. Cet orifice 56 coopère avec un carré d'entraînement 57 comme représenté figure 21. Ce carré d'entraînement 57 fait partie d'un bouton ou mollette 58 susceptible d'être manoeuvrée par l'opérateur pour déplacer la came 16" et régler en conséquence l'amplitude du débattement des bras 11.The figure 20 represents another variant of the cam. This cam 16 "is in the form of a ring with a central portion forming a hub 55 which is provided with a non-circular orifice 56 of the square or rectangular kind.This orifice 56 cooperates with a drive square 57 as shown figure 21 . This drive square 57 is part of a button or wheel 58 that can be operated by the operator to move the cam 16 "and adjust accordingly the amplitude of the travel of the arms 11.

Cette came 16" comporte un profil en forme de rampe ou de coin constitué, comme décrit précédemment figures 19 et 16, de lamelles élastiques 60. Lorsque la came est en position active par rapport aux mentonnets 32, ces lamelles 60 peuvent être en contact permanent avec les mentonnets.This cam 16 "has a profile in the form of ramp or wedge constituted, as previously described Figures 19 and 16 60. When the cam is in the active position relative to the chins 32, these slats 60 may be in permanent contact with the chins.

Ces rampes en forme de lamelles peuvent avoir une épaisseur variable soit de façon constante comme représenté figure 19, soit au moyen de plots 61 qui s'étendent en saillie sur la lamelle comme représenté figure 20.These ramps in the form of lamellae may have a variable thickness or be constant as shown figure 19 or by means of studs 61 which project from the lamella as shown figure 20 .

Les figures 22 et 23 représentent une rotule du type de celle décrite figure 17 notamment ; cette rotule est munie d'une came 16" telle que représentée figure 20, manoeuvrée au moyen du bouton 58 comme représenté figure 21.The Figures 22 and 23 represent a ball of the type described figure 17 especially ; this ball is provided with a cam 16 "as shown figure 20 , operated by means of the button 58 as shown figure 21 .

La came 16", comme représenté figure 23, est logée entre la platine 12 munie des articulations des bras 11 et la surface d'appui 17 formant butée au niveau de la tête 3 de la rotule. L'axe de la came 16" est constitué par le carré de manoeuvre 57 aménagé sur le bouton 58, lequel bouton est guidé et centré dans un alésage de la traverse supérieure de la tête 3.The cam 16 ", as shown figure 23 , is housed between the plate 12 provided with the hinges of the arms 11 and the abutment surface 17 forming a stop at the head 3 of the ball joint. The axis of the cam 16 "is constituted by the operating square 57 fitted on the button 58, which button is guided and centered in a bore of the upper crossbar of the head 3.

Cette traverse supérieure 31 est reliée à la platine 12 au moyen d'une paroi 63 qui est décalée du côté de l'extérieur de la rotule, entre les logements 24 prévus pour accueillir les extrémités des lattes.This upper cross member 31 is connected to the plate 12 by means of a wall 63 which is offset on the outside of the ball, between the housing 24 provided to accommodate the ends of the slats.

Claims (10)

  1. Ball joint for a slatted type or a multi-element type bed base, consisting of:
    - a footing (1) which is arranged to be secured on the structure of said bed base,
    - a head (3) which is arranged to receive and secure one or more slats or a plate, according to the type of bed base,
    - an elastic link (5) between said footing (1) and said head (3), arranged to allow a movement of the latter toward the footing according to at least one component perpendicular to that footing (1),
    characterized in that it comprises on one hand, at said elastic link (5), a first part consisting of rigid arms (11) disposed in a V-configuration, articulated on a platen (12) which is integral with either said footing (1) or said head (3), and a second part forming a spring (10) which extends between the free ends (14) of said arms (11) and said head (3) or said footing (1) according to the case, and, on the other hand, means to adjust and control the amplitude of the movement of said arms (11) so as to modify at will the movement ability of said head (3) relative to said footing (1) and, consecutively, the stiffness of said ball joint.
  2. Ball joint according to claim 1, characterized in that the constitutive elements thereof, i.e. the footing (1), the head (3) and the elastic link (5) interposed between them both, are arranged in an integral form made of a thermoplastic material of elastomeric type.
  3. Ball joint according to any one of claims 1 or 2, characterized in that the means to adjust and control the movement of the rigid arms (11) consist of at least one cam-shaped part (16, 16', 16"), the position of which is adjustable according to the needs, in particular between said arms (11) and a surface (17) acting as a stop, arranged either at the head (3) or at the footing (1) according to the case.
  4. Ball joint according to claim 3, characterized in that the cam (16') has a U-shape the legs of which are provided with a wedge-type or a ramp-type profile (44'), said cam (16') being guided as a slide, centered on the pivot-shaped linking member (30) interposed between the surface (17) acting as a stop and the platen (12) supporting the articulation of the rigid arms (11).
  5. Ball joint according to claim 4, characterized in that the internal sides of the legs of the U-shaped cam (16') comprise a kind of notching (52) cooperating with the pivot-shaped linking member (30) interposed between the surface (17) acting as a stop and the platen (12) for articulation of the arms (11), to establish at least two adjustment possibilities for the position of the cam (16').
  6. Ball joint according to claim 3, characterized in that the cam (16) has the form of a horseshoe snap-fitted onto the pivot-shaped linking member (30) interposed between the surface (17) acting as a stop and the platen (12) supporting the articulation of the arms (11), said cam comprises profiles (44) arranged in a wedge or a ramp manner, with a symmetry relative to the rotation axis (46) thereof.
  7. Ball joint according to claim 3, characterized in that the cam (16") has the form of a ring interposed between the surface (17) of the head (3) and the platen (12) for articulation of the arms (11), said ring is centered and operated by mean of an axis (57) which is guided in an opening formed in said surface (17), said axis being a part of a button-type member (58) arranged to drive said cam in rotation, said cam (16") comprises wedge-type profiles (61) or ramp-type profiles, arranged symmetrically relative to the rotation axis thereof.
  8. Ball joint according to claim 7, characterized in that the cross-bar (31) of the head (3), comprising the bearing surface (17) and the platen (12) for articulation of the rigid arms (11), is integrally linked by mean of an offset linking wall (63), thereby forming a housing for the ring-shaped cam (16").
  9. Ball joint according to any one of claims 3 to 8, characterized in that the rigid arms (11) comprise, close to their articulation on the platen (12), toes (32) intended to rest on the profiles of the cams (16, 16', 16") according to the case.
  10. Ball joint according to any one of claims 3 to 9, characterized in that the profiles of the cams are arranged in the form of resilient blades (50, 44', 60) the toe-side face of which being situated in the end plane of the latter for maintaining them in direct contact with said blades, said blades acting as a resilient return device for the arms, toward the rest position thereof.
EP03291216A 2002-05-24 2003-05-22 Stiffness adjustment system for bed base ball joint Expired - Lifetime EP1364600B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0206344A FR2839870B1 (en) 2002-05-24 2002-05-24 FIRMITY ADJUSTMENT SYSTEM FOR BALL JOINT
FR0206344 2002-05-24

Publications (2)

Publication Number Publication Date
EP1364600A1 EP1364600A1 (en) 2003-11-26
EP1364600B1 true EP1364600B1 (en) 2008-09-03

Family

ID=29286638

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03291216A Expired - Lifetime EP1364600B1 (en) 2002-05-24 2003-05-22 Stiffness adjustment system for bed base ball joint

Country Status (5)

Country Link
EP (1) EP1364600B1 (en)
AT (1) ATE406822T1 (en)
DE (1) DE60323292D1 (en)
ES (1) ES2314164T3 (en)
FR (1) FR2839870B1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202004016392U1 (en) * 2004-10-21 2005-01-13 Hartmann, Siegbert Endpoint bearing for slats of bed slatted frames
DE202005013006U1 (en) 2005-04-22 2005-12-15 Hartmann, Siegbert Endpoint bearing for slats of bed slatted frames
DE202005013018U1 (en) * 2005-08-16 2005-11-10 Hartmann, Siegbert Spring system for chairs or beds comprises support plates mounted on two sloping spring struts, struts from adjacent plates being fastened to single bolt on chair or bed frame, connector in shape of inverted V linking struts above bolt
FR2892907B1 (en) * 2005-11-10 2012-10-19 Creations Andre Renault LATTE SUPPORT (S), ESPECIALLY BED LATTE (S) FOR REALIZATION OF LATCH SUPPORT SURFACE AND LATCH SUPPORT SURFACE OBTAINED
ES2285921B1 (en) * 2005-11-23 2009-02-16 Industrias Hidraulicas Pardo, S.A. SUPPORT FOR MILK LAMPS WITH ELASTICITY REGULATION.
FR2898476B1 (en) * 2006-03-20 2011-03-11 Delahousse Et Fils Sa SUSPENSION ELEMENT FOR SOMMIER OR SEAT OF THE LATTER OR MULTI-ELEMENT TYPE PROVIDED WITH FERMETE ADJUSTING MEANS
DE102007022023A1 (en) * 2006-08-30 2008-03-06 Schwenk, Hans Ulrich, Dipl.-Ing. Suspension system for mattresses
DE502006008524D1 (en) * 2006-11-29 2011-01-27 Recticel Bedding Schweiz Ag Bearing element for the support of support slats on the longitudinal members of a mattress of a bed
DE202007004007U1 (en) * 2007-03-14 2007-06-21 Hartmann, Siegbert Adjustable single spring is used to provide support for a chair or platform has a leaf spring form
DE102008009450A1 (en) 2007-05-08 2008-11-13 Schwenk, Hans Ulrich, Dipl.-Ing. Height adjustable slatted bed base has cams or wedges to vary the spacing between the mounting and the slat supports
FR2975574B1 (en) * 2011-05-23 2014-06-13 Tournadre Sa Standard Gum SUSPENSION DEVICE FOR SOMMIER WITH ADJUSTABLE STIFFNESS
FR2990833B1 (en) 2012-05-23 2017-01-06 Tournadre Sa Standard Gum SUSPENSION DEVICE FOR SOMMIER WITH ADJUSTABLE STIFFNESS
ES2899723T3 (en) * 2015-04-29 2022-03-14 Bekina Nv Adjustable slat suspension device

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GB1430590A (en) * 1972-12-21 1976-03-31 Dulop Ltd Furniture for sitting or lying upon
DE8223286U1 (en) * 1982-08-18 1982-12-30 Hülsta Werke Hüls KG, 4424 Stadtlohn BEARING BODY FOR THE SLATS OF A SLATRATE
BE903459A (en) * 1985-10-16 1986-02-17 Salens Luc Flexible bedframe slat adjusting device - comprises small bracket plate with pins engaging in slat support holes to adjust height
FR2662063A1 (en) * 1990-05-15 1991-11-22 Thibaudeau Bruno Comfortable adjustable articulated device for fitting to a mattress support, in which the slats or a flat surface are supported by balanced springs
DE59201945D1 (en) * 1991-05-09 1995-05-24 Roessle & Wanner Gmbh Slatted frame.
DE59407440D1 (en) 1993-11-10 1999-01-21 Senne Lizenz & Produkte Gmbh Upholstery element with a large number of spring elements arranged in regular patterns
IT1290297B1 (en) * 1997-02-12 1998-10-22 Orsa Srl ERGONOMIC FRAME FOR BEDS
FR2793125B1 (en) 1999-05-06 2001-08-17 D E F I S SUSPENSION FOR A MULTI-ELEMENT-TYPE BED
DE20001616U1 (en) * 2000-01-31 2001-03-08 Froli Kunststoffwerk Fromme H Bearing element for seating or lying areas

Also Published As

Publication number Publication date
EP1364600A1 (en) 2003-11-26
ATE406822T1 (en) 2008-09-15
ES2314164T3 (en) 2009-03-16
DE60323292D1 (en) 2008-10-16
FR2839870A1 (en) 2003-11-28
FR2839870B1 (en) 2004-08-27

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