Classifications

• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47C—CHAIRS; SOFAS; BEDS
  • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
  • A47C27/04—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with spring inlays
  • A47C27/06—Spring inlays
  • A47C27/063—Spring inlays wrapped or otherwise protected
  • A47C27/064—Pocketed springs
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47C—CHAIRS; SOFAS; BEDS
  • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
  • A47C27/04—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with spring inlays
  • A47C27/06—Spring inlays
  • A47C27/065—Spring inlays of special shape

Definitions

• the present invention relates to a coil of coil springs housed in individual retaining pockets and which is intended for making pocket spring suspensions for bedding mattresses.
• FIG. 1 shows a known suspension 1 with pocket springs 2 for bedding mattresses consisting of a plurality of parallel strings 3, 4, 5 of springs 2 respectively housed in individual pockets 6.
• a string of springs in pockets 3, 4 5 is attached to each adjacent strand by adhesive lines 7 spread over the mutually contacting outer tangential and tangential surfaces of the pockets 6.
• the lines of adhesive 7 making it possible to fix a pocket 6 of the string 3 to an adjacent pocket 6 of the adjacent string 4 may consist of two parallel strips of adhesive located at a certain distance from one another and spread on the arcuate outer face of the poch 6 perpendicular to the longitudinal direction of the spring 2 housed in this pocket.
• the individual pockets 6 of a string 3, 4, 5 in each of which is housed a spring 2 are formed between two panels folded one above the other of a strip of elongated flexible fabric and heat-sealable and are delimited by lines of the rhodes sidure 9 transverse to the strip 8, located between the adjacent springs 2 and parallel to the longitudinal direction of each spring, and a longitudinal heat seal line 10 opposite and substantially parallel to the longitudinal fold zone 11 both sides of the band 8.
• the successive transverse heat-sealing lines 9 extend rectilinearly over practically the entire width of the band of the ring 3,4,5 and are located at a determined distance from each other so as to define the width of each pocket 6 of housing a spring 2 and the longitudinal heat seal line 10 defines the height of each pocket.
• each pocket of a string contains two helical coil springs serially connected to one another by one or more central turns of smaller diameter.
• this known suspension has the disadvantages that when a load is applied to the pairs of barrel coil springs respectively housed in the retaining pockets of the strings, each pair of springs is not effectively maintained in the corresponding pocket when the two springs of this pair work vertically in compression or relaxation under this load.
• Each pair of series springs housed in a pocket can thus be arranged obliquely in the pocket and hook with another pair of springs in series housed in an adjacent pocket to cause a collapse of the suspension and / or generate an unpleasant noise of the suspension, thus affecting the comfort of the mattress comprising such a suspension.
• the present invention aims to overcome the above disadvantages of known suspensions.
• the invention relates to a string of helical springs housed parallel to each other in individual retaining pockets formed between two folded panels one above the other of a strip of elongated flexible fabric , and delimited by connecting lines joining the two sections to one another and comprising transverse connecting lines parallel to the longitudinal axes of the coil springs and a longitudinal line of opposite connection and substantially parallel to the longitudinal fold zone of the two panels, according to which each pocket contains a helical spring consisting of two spring parts connected in series with each other by at least one turn of smaller diameter, each connecting transverse line is divided, in an area between two adjacent pockets and at each turn of smaller diameter, in two parts connected to each other by two connecting lines spaced from each other to define a closed contour and elongated parallel to the transverse line of connection and a recess in the form of an elongated window parallel to the transverse connection line is formed by removing fabric between the two connecting lines.
• the two connecting lines are substantially arcuate and of opposite convexities and the recess is approximately oval.
• each transverse connection line is divided towards the longitudinal connection line into two oblique connecting lines defining a V shape open in the opposite direction to the fold zone of the two panels, a cut in V shape is made by removing material from the fabric portion located between the two branches of the V-shape of the two oblique lines to impart to the end portions of the pockets a substantially frustoconical housing shape of end portions of smaller diameter of the spring portions located on the same side relative to the smaller diameter turns of the pocket springs.
• the aforementioned parts of springs on the same side relative to the smaller diameter turns are rolled and the spring portions located on the opposite side relative to the smaller diameter turns are frustoconical whose large bases are supported on the fold zone of the two faces.
• each transverse connection line is divided opposite the longitudinal connection line into two oblique connecting lines defining a V shape open to the fold zone of the two faces and a V-shaped cut is made by removing material from the fabric portion located between the two branches of the V-shape of the two oblique lines to impart to the end portions of the pockets a substantially frustoconical shape of housing portions of smaller diameter ends of the spring portions located on the same opposite side relative to the smaller diameter turns of the pocket springs.
• the spring parts situated on the two opposite sides relative to the smaller diameter turns are rolled.
• the transverse connection lines situated on either side of the closed-contour connection lines are parallel to each other in order to give the end portions of the pockets a substantially cylindrical shape. and in that each spring housed in a pocket is substantially diabolo-shaped.
• the transverse connection lines situated on either side of the closed-contour connection lines are parallel to each other in order to give the end portions of the pockets a substantially cylindrical shape. and in that each spring housed in a pocket is substantially hourglass shaped.
• each turn of smaller diameter is a central turn and each recess is located halfway between two adjacent pockets.
• each turn of smaller diameter is eccentric between the two spring portions of a pocket.
• the fabric web is of a material or of the trans-longitudinal and longitudinal lines of connection are discontinuous or continuous heat-sealing lines.
• the invention is also directed to a pocket sprung suspension for bedding mattresses, comprising a plurality of parallel strings of pocket springs connected to each other and characterized in that each strand of pocket springs is as previously described.
• the invention finally relates to a bedding mattress intended to be placed on a bed base and comprising an internal suspension with pocket springs which comprises several strings of springs in pockets connected to each other and which is characterized in that each string is of the type according to which the pockets of the rosary comprise in the lower part of the mattress frustoconical springs intended to rest on the bed frame via their large bases and the upper part of the barrel springs.
• Figure 1 is an elevational view of several parallel strings of pocket springs contiguous to each other to form a mattress bedding suspension according to the prior art
• Figure 2 is an elevational view along the arrow II of Figure 1 of a pocket string respectively enclosing barrel springs;
• FIG. 3 is an elevational view of a portion of a string of pocket springs according to a first embodiment of the invention
• FIG. 4 is an elevational view of a string of pocket springs according to a second embodiment of the invention.
• FIG. 5 is a perspective view showing two strings of pocket springs contiguous to each other, each string being identical to the string of Figure 4;
• FIG. 6 is an elevational view of a string of springs pocket according to a third embodiment of the invention.
• FIG. 7 is an elevational view of a string of pocket springs according to a fourth embodiment of the invention.
• the pocket spring string 2 is made by the known method of firstly inserting the axially compressed springs 2 between two superimposed sides of a strip of heat-sealable elongated fabric. in spaced positions or locations
• the non-woven material of the strip 8 is flexible and the heat-sealing lines 9, 10 are obtained by ultrasound.
• the adjacent strings of pocket springs 2 are connected to each other by discontinuous adhesive lines 7 as described at the beginning of the description or continuous in the longitudinal direction of the springs to form a pocket spring suspension of a bedding mattress .
• each pocket 6 of a string 3 encloses a helical compression spring 2 comprising two spring portions 12, 13 connected in series with one another by a or several central turns 14 of smaller diameter and constituted respectively by a barrel upper spring portion 12 and a frustoconical lower spring portion 13 disposed on either side of the smaller diameter turn 14.
• the barrel spring portions 12 are said to be superior because they must be located substantially in the upper half of a mattress with the smaller diameter extreme turns of these portions disposed beneath the sleeping area of the mattress.
• the portions of frustoconical springs 13 are said to be inferior because they must be located substantially in the lower half of the mattress with their extreme turns constituting the large bases of these parts of springs resting on the fold zone 11 and intended to rest on the upper face of a bed base S.
• strings of pocket springs having the configuration shown in Figure 3 are intended for the making of mattresses of relatively great thickness and which are not intended to be returned by their user, that is to say that they have only one sleeping surface, that under which are the barrel springs 12.
• the two parts of springs 12, 13 of a double spring 2 housed in the same pocket 6 may have the same stiffness, but they may have different stiffnesses if it is desired to create different combinations of comfort from one location to another. other of the mattress. This difference in stiffness can be obtained by increasing or decreasing the number of turns or windings of one and / or the other of the two series of spring portions 12, 13 of each pocket 6.
• FIG. 3 also shows that each transverse heat-sealing line 9 is divided towards the longitudinal line 10 into two oblique heat-sealing lines 15 defining a V shape open in the opposite direction to the fold zone 11 or towards the line 10 so as to decrease the width of each retaining pocket 6 of a barrel-shaped upper spring portion 12 in the area of this pocket where the smaller diameter upper end portion of the turns of the barrel spring portion 12 is housed.
• the two oblique heat-sealing lines 15 located on either side of a barrel spring portion 12 have an inclination and a height from their rectilinear transverse heat seal line 9 such that they configure part of the upper pockets in an approximately frusto-conical shape enabling the substantially confined frustoconical upper end portion of smaller diameter of the barrel spring portion 12 to be contained without play.
• FIG. 3 further shows that the pocket springs chain 3 is provided with cutouts 16 made by removing material from the strip 8 between the branches.
• different pairs of oblique lines 15 for configuring each substantially V-shaped cutout 16 embedded in the conjugate V-shape defined by two oblique heat-sealing lines 15 associated with a transverse heat seal line 9.
• Two successive cuts 16 of the band 8 define between them an approximately frustoconical pocket portion allowing axial compression or depression of at least the corresponding barrel spring portion 12 without causing depression of the adjacent barrel spring portions 12 of the barrel 12. made of the absence of fabric between two portions of adjacent frustoconical pockets.
• the cutouts 16 provide the springs 2 of the rosary 3 more independence than those of a traditional rosary.
• FIG. 3 finally shows that each transverse line 9 is divided or split into an area situated at mid-height between two adjacent pockets 6 and at one or more central turns 14, in two parts connected one to the other. another by two substantially arcuate heat-sealing lines 17 facing each other and with opposite convexities in the direction perpendicular to the transverse line 9 to define an approximately oval contour.
• a recess 18 is formed by removing fabric material between the two substantially arcuate connecting lines so that this recess has approximately an elongated oval shape parallel to the transverse line 9. The remaining lower and rectilinear portion of each transverse line 9 located under the corresponding recess 18 extends to the fold zone 11. Thus, each recess 18 is located halfway between two adjacent pockets 6.
• the recesses 18 between the adjacent pockets 6 of a string can be made by any known means, for example by ultrasound, by a cutting and perforating machine, or by punching.
• a mattress made from a stretchable suspension, each in accordance with the string of Figure 3, provides greater comfort due to greater flexibility compared to the previous mattresses, and also ensures a greater firmness of the base of the mattress resting on the bed base by the presence of the parts of lower frustoconical springs, and this for a greater longevity of the mattress.
• each double spring 2 housed in a pocket 6 of the string 3, 4 pocket springs respectively comprises on either side of one or more central turns of smaller diameter 14, an upper spring portion 12 in barrel and a lower spring portion 13 also in barrel, the two barrel spring portions 12, 13 being identical.
• each string 2, 3 of a suspension comprises a succession of pairs of oblique heat-sealing lines 15 and cutouts 16 formed between the pairs of heat-seal lines 16 so that the end portions
• the upper pockets 6 have an approximately frustoconical shape, each of which accommodates the approximately frustoconical upper end portion of a corresponding barrel spring portion 12.
• each strand 3, 4 also has recesses 18 between adjacent shaped pockets. approximately approximately oval and made between pairs of arcuate heat-sealing lines 17.
• FIG. 5 shows that each recess 18 can approach a diamond shape comparable to an approximately oval shape, for example in a rugby ball.
• each lower transverse heat-sealing line 9 is divided opposite the longitudinal connecting line 10, as opposed to the upper heat-sealing transverse line 9 with two upper oblique connecting lines 15, in two other oblique connection lines.
• 15 defining an open V-shape towards the fold zone 11 of the two sections of the strip 8 and a V-shaped lower cut-out 16 is made by removing material from the part of the fabric situated between the two branches of the form.
• V of the two lower oblique lines 15 to give each end portion of a pocket 6 a substantially frustoconical housing housing an end portion of the smaller diameter turns of the barrel lower spring portion 13.
• the recess 18 may be formed between two parallel connection lines 17 spaced from each other perpendicularly to the corresponding connecting transverse line 9 to form an elongated rectangular window parallel to the line 9 and of the same inner contour as the outer contour defined by the two lines 17.
• each pair of connecting lines 17 can define any other shape of oval or rectangular contour from the moment they have a closed contour and elongated in the direction parallel to the transverse connection line 9, the two connecting lines 17 being symmetrical relative to this direction.
• each turn of smaller diameter 14, instead of being located in the middle between the two parts of springs 12, 13, may be eccentric or shifted between these two parts.
• each turn of smaller diameter can be shifted upwards with respect to these figures while being further away from the fold zone 11, that is to say that each upper spring portion 12 will have a length less than the lower spring portion 13 in the uncompressed state of the spring 2.
• This eccentric or offset configuration also applies in the case of more than one turn of smaller diameter 14 connecting the two parts 12, 13 of each spring 2.
• a mattress made from an internal suspension of pocket springs each of which would be identical to the strings of Figures 4 and 5 will have the same advantageous characteristics as those of the mattress equipped with pocket springs, each identical to the rosary of Figure 3, with the only difference that the base of the mattress resting on a bed base will not have as great firmness because the lower springs 13 are barrel instead of being frustoconical.
• the pocket spring strings identical to that of Figure 4 are for mattresses that can be returned.
• FIG. 4 will benefit from a relatively flexible receiving portion by the upper spring portions 12 and a relatively firm support portion by the lower spring portions 13 while the mattress of Fig. 4 will have receiving portions and identical and balanced support by the same upper 12 and lower 13 spring parts.
• Each rosary of FIG. 4 makes it possible to effectively maintain in each pocket a double barrel spring without the risk of being disposed transversely when a load is applied to it vertically and also makes it possible to increase the independence of sleeping on a fitted mattress. such rosaries, in relation to rosaries whose pockets each contain a barrel spring.
• the transverse connection lines 9 situated on either side of the closed-contour connection lines 17 are straight and parallel to each other in order to give the end portions of the pockets 6 a substantially cylindrical shape so that each pocket 6 can accommodate a spring 2 substantially shaped diabolo.
• each spring 2 housed in a pocket 6 is substantially hourglass-shaped, that is to say that the two spring portions 12, 13 located on either side of the third central portion of spring 14 of smaller diameter are cylindrical.
• each turn of smaller diameter 14 of a spring 2 instead of being located in the middle between the two spring portions 12, 13 as shown in FIGS. 6 and 7 may be eccentric or offset between these two parts as described with reference to the other previous embodiments.
• each string of Figure 6 or 7 can effectively maintain in each pocket a diabolo or hourglass spring without the risk of being placed sideways when a load is applied vertically while respecting the criterion of independence.
• the invention has been described with reference to rosaries whose pockets are formed from transverse and longitudinal lines of heat-sealing, but it is understood that it can be applied to rosaries whose transverse and longitudinal lines are made by sewing.

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• Mattresses And Other Support Structures For Chairs And Beds (AREA)
• Bedding Items (AREA)

Applications Claiming Priority (2)

Publications (2)

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ID=47221474

Family Applications (1)

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Family Cites Families (4)

• 2011
  • 2011-10-28 FR FR1159855A patent/FR2981836B1/fr active Active
• 2012
  • 2012-10-24 EP EP12790613.9A patent/EP2770880B1/de active Active
  • 2012-10-24 ES ES12790613.9T patent/ES2688358T3/es active Active
  • 2012-10-24 WO PCT/FR2012/052438 patent/WO2013060983A1/fr not_active Ceased

Non-Patent Citations (1)

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