EP0139956B1 - Federkern für eine Matratze - Google Patents

Federkern für eine Matratze Download PDF

Info

Publication number
EP0139956B1
EP0139956B1 EP84109738A EP84109738A EP0139956B1 EP 0139956 B1 EP0139956 B1 EP 0139956B1 EP 84109738 A EP84109738 A EP 84109738A EP 84109738 A EP84109738 A EP 84109738A EP 0139956 B1 EP0139956 B1 EP 0139956B1
Authority
EP
European Patent Office
Prior art keywords
spring
branch
bending point
coil
transition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP84109738A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0139956A3 (en
EP0139956A2 (de
Inventor
Alan Thoenen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Spuehl AG
Original Assignee
Spuehl AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Spuehl AG filed Critical Spuehl AG
Priority to AT84109738T priority Critical patent/ATE38318T1/de
Publication of EP0139956A2 publication Critical patent/EP0139956A2/de
Publication of EP0139956A3 publication Critical patent/EP0139956A3/de
Application granted granted Critical
Publication of EP0139956B1 publication Critical patent/EP0139956B1/de
Expired legal-status Critical Current

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Classifications

    • 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
    • A47C23/04—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases using springs in compression, e.g. coiled
    • A47C23/043—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases using springs in compression, e.g. coiled using wound springs
    • A47C23/0438—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases using springs in compression, e.g. coiled using wound springs of special shape
    • 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
    • A47C23/04—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases using springs in compression, e.g. coiled
    • A47C23/05—Frames therefor; Connecting the springs to the frame ; Interconnection of springs, e.g. in spring units
    • 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
    • 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
    • A47C27/07—Attaching, or interconnecting of, springs in spring inlays

Definitions

  • the invention relates to a coil spring for the innerspring of a mattress according to the preamble of patent claim 1.
  • GB-A-386 251 already discloses such a coil spring for the spring core of a mattress.
  • the longer legs of the known coil spring each have a bend at the end in the manner of a hook bent in the plane of the end windings in order to be able to fix the ends of the coil spring in the region of a helical connecting spring.
  • the disadvantage here is that the respective ends of the coil spring are limited in flexibility under high loads and disadvantageously get caught in the coil spring, so that high loads on the spring core can lead to deformation of the respective end region of the coil spring and the connecting spring.
  • the hooks bent in the plane of the respective end turn can easily damage a mattress lying on it.
  • the formation of a bent hook is complex during assembly and can easily lead to the spring steel breaking out.
  • the invention therefore has the task of developing a coil spring of the type mentioned in such a way that the assembly of the spring core is facilitated and high loads can be absorbed resiliently without fear of deformation of the coil spring or the connecting spring.
  • the invention is characterized in that the slightly arcuate wire piece on the free longer legs is formed obliquely inwards out of the plane of the end turns and in connection with the kick end and that, with the exception of an edge region of the spring core, all coil springs are aligned equally.
  • the essence of the invention is that the respective end regions of the coil spring in the area of a connecting spring are not fixed relentlessly when they are arranged in the innerspring of a mattress, but rather that the ends of the coil spring are resilient in narrow areas due to the oblique, stepped design. Therefore, the ends of the coil spring can dodge slightly under high loads in the area of the helical connecting spring, as a result of which irreversible deformations are avoided. Damaging an overlying mattress is also avoided by the inclined inward bend out of the plane of the end turns. The installation of the spring core, in particular in connection with an automatic assembly, is facilitated by the only slight step-shaped inclined bending of the respective ends.
  • each end turn has five bending points, of which the first bending point defines the transition of the screw turn into the shorter leg; the second bending point the transition of the shorter leg into the base web; the third bending point is the transition of the base web into the longer leg; the fourth bending point the transition of the longer leg into the bent piece of wire; and the fifth bending point the transition of the piece of wire into the obliquely bent kink end.
  • the proposed arrangement of the bending points achieves an excellent connection of the legs in the helical connecting spring encompassing them.
  • the coil spring 10 shown in FIG. 1 preferably has two successive screw turns 15, 16, the upper screw turn 15 in the upper level 1 of the spring core ending in a U-shaped curved end turn 11, while the lower screw turn 16 in the lower level 2 of the Spring core runs into a lower end turn 31. Both end turns 11, 31 are the same, so that the description of one end turn enough.
  • the end windings 11, 31 lie one above the other in alignment with the spring axis 17.
  • the active length of the wire which determines the spring property of the helical spring 10, extends from the position 23 of the upper end turn 11 down to the position 24 of the lower end turn 31.
  • FIG. 2 shows the bottom view of the lower end turn 31 in solid lines, while the parts above it, in particular the upper end turn 11, are indicated in dashed lines.
  • the shorter leg 13 of the upper end turn 11 is not shown in FIG. 2.
  • the U-shaped curved end turn is at a lateral distance from the screw turns 15, 16. This is represented by the distance 3 of the longer leg 12 of the end turn from the associated screw turn 16, while on the opposite side the shorter leg 13 has a smaller distance 4 from the screw turn 16 of the coil spring 10. These distances 3, 4 ensure that the end turns do not come into contact with the screw turns 15, 16 even when the coil spring 10 is subjected to extreme loads.
  • the respective end turn 11, 31 is bent in a U-shape.
  • the end turn 31 shown in solid lines in FIG. 2 is formed from a shorter leg 13, the base web 18 forming the base of the U and the longer leg 12.
  • the shorter leg 13 of the U-shaped end turn 31 connects to the descending screw turn 16 of the coil spring 10 via a first bending point 5.
  • the shorter leg 13 has a length 26.
  • the shorter leg 13 runs into the base web 18, which at the time was slightly curved.
  • a third bending point 7 is arranged, to which one end of the longer leg 12 connects. This, in turn, runs slightly curved with a length 25 to the fourth bending point 8.
  • a piece of wire 28 attaches to the front free end of which via a fifth bending point 9 the kink 14 starts.
  • the meaning of the bent wire piece 28 with the bent end 14 attached to it can be seen from FIG. 5.
  • the wire pieces 28 with the kink ends 14 attached to them are each bent obliquely inwards in the direction of the spring axis 17, so that there is no contact with the helical coils 15, 16 of the coil springs 10, 10 ', and no excavation of the padding is to be feared.
  • the respective wire end of the open end turn 11, 31 is thus optimally protected.
  • the upper end turn 11 is formed analogously to the lower end turn 31, as can be seen from the broken line in FIG. 2.
  • FIGS. 3 to 5 show a partially assembled spring core.
  • FIGS. 3 and 4 also show the edge region 27 of the spring core, where it can be seen that only in this edge region 27 are the coil springs 10, which are otherwise oriented the same way, so that the otherwise lower end turn 31 lies there at the top.
  • This ensures that the base web 18 always forms the outer edge of the spring core and thus it is possible to connect a peripheral circumferential wire 32 in the upper and lower level 1, the spring core on the edge side to the end windings of the associated coil springs and with the peripheral peripheral connecting spring 33 with them To fasten coil springs.
  • FIGS. 3 and 4 show the coil springs 10 arranged in rows and columns.
  • the connecting lines 19 through the spring axes 17 form vertical lines in the drawing plane of FIG. 4, while horizontal lines are defined in an analogous manner through the connecting lines 19a.
  • the connecting lines 19, 19a intersect at right angles, so that the edge sides of the spring core assembled in this way also form right angles. The formation of said right angles does not lead to the offset previously described in connection with DE-OS-3 321 991, which could only be eliminated by corresponding corrections on the assembly machine.
  • both the longer leg 12 of one helical spring and the shorter leg 13 of the adjacent helical spring emerge on one spring turn 20, while on the opposite side after the passage of four spring coils the shorter leg 13 of a coil spring exits the spring turn 21, while the longer leg 12 of the adjacent coil spring exits a spring turn later, namely on the spring turn 22.
  • bent wire pieces 28 with the bending ends 14 attached to them are each bent inwards in the direction of the spring axis 17, 17 '. They are each bent out of level 1, 2 of the innerspring, so that an undesired contact with the cushioning material is excluded in any case.

Landscapes

  • Springs (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Finger-Pressure Massage (AREA)
EP84109738A 1983-09-20 1984-08-16 Federkern für eine Matratze Expired EP0139956B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84109738T ATE38318T1 (de) 1983-09-20 1984-08-16 Federkern fuer eine matratze.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833333846 DE3333846A1 (de) 1983-09-20 1983-09-20 Federkern fuer eine matratze
DE3333846 1983-09-20

Publications (3)

Publication Number Publication Date
EP0139956A2 EP0139956A2 (de) 1985-05-08
EP0139956A3 EP0139956A3 (en) 1986-01-02
EP0139956B1 true EP0139956B1 (de) 1988-11-02

Family

ID=6209516

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84109738A Expired EP0139956B1 (de) 1983-09-20 1984-08-16 Federkern für eine Matratze

Country Status (10)

Country Link
US (1) US4817924A (ja)
EP (1) EP0139956B1 (ja)
JP (1) JPS60111611A (ja)
AT (1) ATE38318T1 (ja)
AU (1) AU568877B2 (ja)
CA (1) CA1230685A (ja)
DE (2) DE3333846A1 (ja)
ES (1) ES281530Y (ja)
MX (1) MX161820A (ja)
ZA (1) ZA847373B (ja)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1209061C (zh) * 1994-10-21 2005-07-06 俄亥俄褥垫公司许可证及组成集团 具有自由终端旋圈的弹簧的内弹簧结构
US5575460A (en) * 1995-01-09 1996-11-19 Spuehl Ag Spring core for a mattress
US5584083A (en) * 1995-06-01 1996-12-17 L&P Property Management Company Mattress spring core
USD382739S (en) * 1996-03-15 1997-08-26 L&P Property Management Company Top portion of a spring core
USD382154S (en) * 1996-03-15 1997-08-12 L&P Property Management Company Top portion of a spring core
USD382151S (en) * 1996-03-15 1997-08-12 L&P Property Management Company Top portion of a spring core
USD382155S (en) * 1996-03-15 1997-08-12 L&P Property Management Company Top portion of a spring core
USD386334S (en) * 1996-03-15 1997-11-18 L&P Property Management Company Top portion of a spring core
USD382742S (en) * 1996-03-15 1997-08-26 L&P Property Management Company Top portion of a spring core
USD382152S (en) * 1996-03-15 1997-08-12 L&P Property Management Company Top portion of a spring core
USD382740S (en) * 1996-03-15 1997-08-26 L&P Property Management Company Top portion of a spring core
USD382153S (en) * 1996-03-15 1997-08-12 L&P Property Management Company Top portion of a spring core
USD382741S (en) * 1996-03-15 1997-08-26 L&P Property Management Company Top portion of a spring core
USD383023S (en) * 1996-03-15 1997-09-02 L&P Property Management Company Top portion of a spring core
USD382743S (en) * 1996-03-15 1997-08-26 L&P Property Management Company Top portion of a spring core
USD382427S (en) * 1996-04-02 1997-08-19 L&P Property Management Company Top portion of a mattress spring core
US5699999A (en) * 1996-04-02 1997-12-23 L&P Property Management Company Aligned mattress spring core
USD382745S (en) * 1996-07-16 1997-08-26 L&P Property Management Company Top portion of a spring core
US6375169B1 (en) 2000-07-28 2002-04-23 Hickory Springs Manufacturing Company Mattress spring cushion assembly with combination of right-hand and left-hand spring units
KR100503556B1 (ko) * 2003-01-07 2005-07-25 주식회사 에이스침대 매트리스용 포켓스프링의 구조 및 제조 방법
US20050089061A1 (en) * 2003-08-28 2005-04-28 Oleg Logvinov Joint powerline/ultra-wide band system
US7404223B2 (en) * 2004-08-28 2008-07-29 Sealy Technology Llc Innerspring coils and innersprings with non-helical segments
US7386897B2 (en) * 2005-06-09 2008-06-17 L&P Property Management Company Bedding or seating product made with coil springs having unknotted end turns
KR100717543B1 (ko) * 2006-03-14 2007-05-15 주식회사 에이스침대 침대 매트리스용 스프링 구조
US8720872B2 (en) * 2011-01-20 2014-05-13 Sealy Technology, Llc Innersprings with alternating coil spring orientations
EP2689695B1 (en) 2012-07-26 2016-06-08 L & P Swiss Holding AG Spring core
USD739162S1 (en) * 2012-08-22 2015-09-22 L&P Swiss Holding Ag Coil spring
US11076705B2 (en) 2014-05-30 2021-08-03 Sealy Technology, Llc Spring core with integrated cushioning layer
ES2977948T3 (es) 2015-12-17 2024-09-03 Sealy Technology Llc Resorte helicoidal en espiral con respuesta de carga variable y colchones que incluyen el mismo
US10610029B2 (en) 2016-01-21 2020-04-07 Sealy Technology, Llc Coil-in-coil springs with non-linear loading responses and mattresses including the same
US10598242B2 (en) 2016-05-20 2020-03-24 Sealy Technology, Llc Coil springs with non-linear loading responses and mattresses including the same
AU2018407588B2 (en) * 2018-02-09 2024-03-14 Madad Pty Ltd Wire coil and innerspring system

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1744389A (en) * 1927-08-27 1930-01-21 Karr Francis Spring assembly
US1887058A (en) * 1927-12-21 1932-11-08 Karr Francis Spring assembly
US1897309A (en) * 1928-11-23 1933-02-14 Charles Karr Company Spring assembly
US1895429A (en) * 1930-01-02 1933-01-24 Foster Brothers Mfg Co Spring construction
GB338054A (en) * 1930-01-03 1930-11-13 Charles Karr Company Inc Improvements in spring assemblies, applicable to mattresses, cushions or the like
US1982426A (en) * 1931-11-23 1934-11-27 Otto L Goethel Triple lock spring with floating top
US2017032A (en) * 1932-05-27 1935-10-08 Moore Co Cushion spring assembly
GB386251A (en) * 1932-07-20 1933-01-12 Wales Ltd Improvements in mattresses and the like
GB397707A (en) * 1932-10-31 1933-08-31 John Maurice Davis Improvements in and connected with spring fillers for mattresses, cushions and the like
US1963055A (en) * 1933-08-14 1934-06-12 Powers Spring Corp Wire spring
US2374850A (en) * 1941-10-18 1945-05-01 William E Wunderlich Inner spring unit
US2581686A (en) * 1946-04-22 1952-01-08 Edward L Mcroskey Spring construction
US2567520A (en) * 1948-10-11 1951-09-11 William K Mcinerney Tension regulation coil spring
US2631840A (en) * 1949-01-27 1953-03-17 George H Bugenhagen Coil spring construction
US4095297A (en) * 1977-05-11 1978-06-20 Holland Wire Products, Inc. Coil spring assembly
AT371984B (de) * 1981-08-28 1983-08-25 Spuehl Ag Schraubenfeder fuer federkerne von matratzen und polstermoebeln
AU550045B2 (en) * 1982-05-26 1986-02-27 Madad Pty. Ltd. Spring mattress
CH658778A5 (de) * 1982-06-28 1986-12-15 Spuehl Ag Federkern fuer eine matratze.

Also Published As

Publication number Publication date
US4817924A (en) 1989-04-04
DE3474903D1 (en) 1988-12-08
EP0139956A3 (en) 1986-01-02
JPS60111611A (ja) 1985-06-18
DE3333846A1 (de) 1985-04-04
ZA847373B (en) 1985-05-29
MX161820A (es) 1990-12-28
ES281530Y (es) 1986-05-16
EP0139956A2 (de) 1985-05-08
JPH0233366B2 (ja) 1990-07-26
AU3332884A (en) 1985-03-28
AU568877B2 (en) 1988-01-14
CA1230685A (en) 1987-12-22
ATE38318T1 (de) 1988-11-15
ES281530U (es) 1985-04-16

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