US3679166A - Seat construction - Google Patents

Seat construction Download PDF

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Publication number
US3679166A
US3679166A US8765A US3679166DA US3679166A US 3679166 A US3679166 A US 3679166A US 8765 A US8765 A US 8765A US 3679166D A US3679166D A US 3679166DA US 3679166 A US3679166 A US 3679166A
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US
United States
Prior art keywords
seat
levers
lower support
plate element
spring
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 - Lifetime
Application number
US8765A
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English (en)
Inventor
Klaus Sturhan
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.)
Isringhausen GmbH and Co KG
Original Assignee
Isringhausen GmbH and Co KG
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 Isringhausen GmbH and Co KG filed Critical Isringhausen GmbH and Co KG
Application granted granted Critical
Publication of US3679166A publication Critical patent/US3679166A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/50—Seat suspension devices
    • B60N2/502—Seat suspension devices attached to the base of the seat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/50—Seat suspension devices
    • B60N2/506—Seat guided by rods
    • B60N2/508—Scissors-like structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/50—Seat suspension devices
    • B60N2/52—Seat suspension devices using fluid means
    • B60N2/525—Seat suspension devices using fluid means using gas

Definitions

  • ABSTRACT [30] Foreign Application Priority Data An upper support is upwardly spaced above a lower support and connected with the latter so as to be moveable Feb. 13, 1969 Germany ..G 69 05 646.8 downwardly toward and y from the lower pp A hol 52 us.
  • Cl 248/399 267/153 elmgated elasmmeric spring is ranged in 51 rm. 'II...II....IIII ..mism 13/00 gagemem with the PP Support, with its longitudinal axis in [58] Field of Search "248/20, 22, 350 399 400; upward position so that the spring is elastically compressible 267/15 A, 20 A, 21 A, 15 R, 20 R, 21 R, 131, 153
  • the present invention relates generally to seat constructions, and more particularly to vehicle seats.
  • One type of spring arrangement which has been used in seats where their height is supposed to be low is a construction where an upper and a lower seat support are provided, being connected by pairs of crossed levers which are pivotably connected with their intersection and which each have one end which is rigidly connected with one of its supports and another end freely slideably connected with the other of the seat supports.
  • a system of tension springs is incorporated in the seat back and connected in suitable manner with the levers so as to tend to elastically urge the same to a position in which the upper support is raised to its maximum spacing upwardly from the lower support.
  • This construction has the disadvantage, however, that if the angle of inclination of the seat back is changed, a change in the tension exerted by the tension springs will necessarily result.
  • this construction is necessarily relatively complicated and, a further disadvantage, limits for the above reasons the extent to which the seat back can be inclined.
  • one feature of the invention resides, briefly stated, in a seat having a lower support and an upper support upwardly spaced from the lower support.
  • Connecting means connect the supports with freedom of displacement of the upper support towards and away from the lower support.
  • I further provide hollow, elongated elastomeric spring means having an upright longitudinal axis and being arranged below the upper support, the spring means being elastomerically compressible by engagement with the upper support in direction of its longitudinal axis in response to displacement of the upper support towards the lower support.
  • l-Iollow elongated elastomeric springs in themselves are not new.
  • the use of such a spring in a seat construction of the type under discussion brings with it decided advantages not obtainable with the spring constructions which heretofore were considered to be necessary in such seats.
  • l-Iollow elongated springs of elastomeric material, such as rubber or synthetic plastic can be relatively short but have an extremely long compression stroke and of course return or relaxation stroke by comparison to their length. For this reason, such springs are particularly advantageous in the construction according to the present invention where it is desired that the overall height of the seat be low.
  • the spring engage the connecting means, and more particularly, pairs of crossed levers which are arranged in scissor shape as outlined earlier, and the combination of such a spring with the engagement thereof on the crossed levers, and more particularly in the region of the pivot points, where the levers intersect one another, assures that the deflection stroke of the spring corresponds to half the distance of movement of the upper support with reference to the lower support.
  • springs of the type under discussion can be compressed at most to approximately half the amount of their unstressed length, so that in the construction according to the present invention, the length of the spring in its untensioned state corresponds approximately to the distance through which the upper support can move with reference to the lower support. The result is not only a very simple construction but an extremely low height requirement for the seat.
  • springs of the type under discussion that they have a relatively great inherent damping factor which can be used to advantage.
  • a linear deflection stroke is obtained.
  • the spring will not perform arcuate movements at all during compression and relaxation and I obtain a constant spring action throughout the entire stroke length.
  • I can construct the spring in such a manner that in the terminal portion of the movement of the upper support with reference to the lower support the spring characteristic can be progressive.
  • a damping device or dashpot which corresponds to those conventionally used with seat constructions of the general type under discussion (Belgian Pat. No. 495,281) is arranged horizontally or near horizontally in the region of the lower support and has one end pivotably connected to and below the lower abutment for the spring whereas its other end is pivotably connected on one of the freely moveable ends of the crossed levers. Arrangement of the dashpot in this manner also contributes to making the overall height of the seat construction low.
  • FIG. 1 is a front elevational view of a seat according to one embodiment of the invention, partly in section and partly broken away;
  • FIG. 1a is a view of one side of the seat shown in FIG. 1
  • FIG. 2 is a section on line ll II of FIG. 1;
  • FIG. 3 is a fragmentary sectional elevation illustrating a further embodiment of the invention.
  • an upper support in form of a frame is provided composed of two transversely spaced U-shaped members 1 which are connected at their front and rear ends by transverse members 2, 2a.
  • This upper support carries the non-illustrated actual seat, that is the upholstery, cover material, etc.
  • a lower support Downwardly spaced from the upper support is a lower support, again frame-shaped and also consisting of two transversely spaced members 3 of substantially U-shaped cross-section, connected at their opposite ends by transverse members 4, 4a.
  • I provide an upright, hollow elongated elastomeric spring 10 which may consist of rubber or synthetic plastic material and which contacts the upper support by engagement in the region of the point of intersection of the levers 5,6 of each pair.
  • the upper end of the spring 10 abuts against an engagement plate 11 which is of inverted U-shape and whose lateral arms 12 extend downwardly and are pivotably connected to the pivot pins 8 for instance by being provided with holes through which the pivot pins 8 extend (as shown in FIG. 1).
  • the lower end of the spring 10 abuts against a support plate 13 whose lateral portions are also slightly downwardly offset and identified with reference numeral 14; these lateral portions 14 are connected to the lower legs of the members 3 of U-shaped crosssection.
  • the stroke of the spring 10 corresponds to only half the displacement distance between the upper and lower seats so that the total height or length of the spring 10 is unstressed condition need correspond only to the distance of displacement between the upper and lower supports, taking into account that the maximum axial compression of a spring corresponding to the spring 10 should only be approximately one-half of the total height or length of the spring in unstressed condition.
  • the spring 10 has a linear stroke so that a constant spring effect is obtained which can be made progressive towards the end of the compression stroke by correspondingly configurating the spring 10 in known manner, if desired.
  • FIG. 2 shows particularly clearly a conventional dashpot 16 which is known in such seat constructions and whose construction itself is not a part of the invention.
  • dashpot 16 is arranged horizontally or substantially horizontally as shown in FIG. 2, below the supporting plate 13 for the spring 10, with one end of the dashpot 16 being connected below the supporting plate 13 where it is pivotably secured for pivoting movement about the axis 18; the lower side of the plate 13 is provided for this purpose with a downward projection 17, for instance a bifurcated projection.
  • the opposite end of the dashpot 16 is pivotably connected with the lowermost of the transverse connectors 9, for instance by means of two levers 20 which are turnably mounted on the transverse connector 9 and to which the opposite end of the dashpot 16 is in turn pivotably secured by the pin or shaft 19.
  • This construction has the advantage of facilitating the construction of the seat in such a manner that it need have only a very low height as seen in direction intermediate the top and bottom of FIG. 2, for instance.
  • the lower supporting plate is here identified with reference numeral 130 and formed with an internally tapped bore through which the externally threaded guide pin 15a is threaded.
  • a knurled or otherwise configurated knob 21 is provided on pin 150 so that it can be threaded deeper or less deep into the bore in the plate 130.
  • the portion of the guide pin 15a which extends upwardly through the plate 130 is provided with a circumferential groove 22 for instance by making the upper end of the guide pin 15a separable from the remainder of the guide pin 15a and securing it threadedly or in another manner to this remainder with the groove 22 being defined between the two sections thus obtained.
  • Seated in the groove 22 is an inner circumferential marginal portion of an annular disc member 22 on which the lower end of the spring 10 is seated.
  • the disc member 23 When the guide pin 15a is threaded through the plate 13a in the sense displacing the guide pin 15a upwardly with reference to the plate 13a, the disc member 23 in turn is moved upwardly and thereby tends to axially compress the spring 10. Conversely, removal of the guide pin 15a in downward direction, tends to relax the spring 10 if the same has previously been stressed.
  • the bifurcated downwardly extending projection 17 for connection of the dashpot 16 is arranged forwardly of the guide pin 15a as seen from the direction of the transverse connector 9 to which the opposite end of the dashpot 16 is to be connected.
  • a seat particularly a vehicle seat
  • connecting means comprising at least two pairs of crossed levers connecting said supports with freedom of displacement of said upper support towards and away from said lower support, the levers each having an end connected to said upper and one end connected to said lower support, and pivot means connecting the levers of each pair at their intersection; hollow elongated elastomeric spring means having an upright longitudinal axis acting with one end on said lower support and with the other end on said pairs of levers at the respective pivot means, said elastomeric spring means being compressible in a direction from said upper support towards said lower support.
  • said spring means consists at least predominantly of synthetic plastic material.
  • a seat as defined in claim 1 further comprising a plate element carried by said lower support and having an upper side; and wherein said elastomeric spring is seated upon and has a lower end abuttingly engaging said upper side of said plate element.
  • said levers each having an other end; further comprising at least one transverse connector connecting said other ends of said levers of said pairs; and a dashpot having one end pivotally connected to and below said plate element and an other end pivotally connected to said transverse connector.
  • a seat as defined in claim 4 further comprising a plate element carried by said lower support and having an upper side; and wherein said elastomeric spring is seated upon and has a lower end abuttingly engaging said upper side of said plate element.
  • said plate element comprising a middle portion and a pair of lateral securing portions, and said spring means having in unstressed condition a predetermined maximum outer diameter; and wherein the outer dimensions of said center and middle portions approximate said maximum outer diameter.
US8765A 1969-02-13 1970-02-05 Seat construction Expired - Lifetime US3679166A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE6905646U DE6905646U (de) 1969-02-13 1969-02-13 Fahrzeugsitz mit abgefederten scherenhebeln

Publications (1)

Publication Number Publication Date
US3679166A true US3679166A (en) 1972-07-25

Family

ID=6599764

Family Applications (1)

Application Number Title Priority Date Filing Date
US8765A Expired - Lifetime US3679166A (en) 1969-02-13 1970-02-05 Seat construction

Country Status (11)

Country Link
US (1) US3679166A (xx)
AT (1) AT302825B (xx)
BE (1) BE743953A (xx)
CS (1) CS154653B2 (xx)
DE (1) DE6905646U (xx)
ES (1) ES374327A1 (xx)
FR (1) FR2030981A5 (xx)
GB (1) GB1251635A (xx)
NL (1) NL7000924A (xx)
SE (1) SE363061B (xx)
YU (1) YU31248B (xx)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3874626A (en) * 1972-07-08 1975-04-01 Bremshey Ag Seat, particularly for automotive vehicles
US4053148A (en) * 1972-06-12 1977-10-11 Chalmers Wallace G Rubber spring and vehicle suspension incorporating said spring
US5765802A (en) * 1996-08-02 1998-06-16 H.O. Bostrom Company, Inc. Low profile seat suspension
GB2402870A (en) * 2003-06-16 2004-12-22 Dronsfield Technologies Ltd Suspension seat
US20070083965A1 (en) * 2005-09-20 2007-04-19 Sport Helmets Inc. Lateral displacement shock absorbing material
US20100258988A1 (en) * 2005-09-20 2010-10-14 Sport Helmets, Inc. Embodiments of Lateral Displacement Shock Absorbing Technology and Applications Thereof
USD679058S1 (en) 2011-07-01 2013-03-26 Intellectual Property Holdings, Llc Helmet liner
USD683079S1 (en) 2011-10-10 2013-05-21 Intellectual Property Holdings, Llc Helmet liner
US8726424B2 (en) 2010-06-03 2014-05-20 Intellectual Property Holdings, Llc Energy management structure
US20150166309A1 (en) * 2013-12-13 2015-06-18 Tünkers Maschinenbau Gmbh Oscillation damper for vibration drivers
USD733972S1 (en) 2013-09-12 2015-07-07 Intellectual Property Holdings, Llc Helmet
US9314062B2 (en) 2010-10-06 2016-04-19 Cortex Armour Inc. Shock absorbing layer with independent elements, and protective helmet including same
US9320311B2 (en) 2012-05-02 2016-04-26 Intellectual Property Holdings, Llc Helmet impact liner system
US9516910B2 (en) 2011-07-01 2016-12-13 Intellectual Property Holdings, Llc Helmet impact liner system
US9743701B2 (en) 2013-10-28 2017-08-29 Intellectual Property Holdings, Llc Helmet retention system
USD807796S1 (en) 2016-03-18 2018-01-16 Hendrickson Usa, L.L.C. Load cushion
US9894953B2 (en) 2012-10-04 2018-02-20 Intellectual Property Holdings, Llc Helmet retention system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020190185A1 (en) * 2001-06-19 2002-12-19 Dale Ropp Seat suspension shock absorber

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US655598A (en) * 1899-12-29 1900-08-07 William Borchert Spring-seat.
US1404031A (en) * 1920-11-10 1922-01-17 Joseph N Kelman Cushion for vehicles
US1529138A (en) * 1922-06-09 1925-03-10 United Air Spring Company Supporting mechanism
US2729441A (en) * 1951-06-22 1956-01-03 Henss Paul Suspension system, especially for vehicles
US3263985A (en) * 1963-08-07 1966-08-02 Planta Kurt Shock absorber

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US655598A (en) * 1899-12-29 1900-08-07 William Borchert Spring-seat.
US1404031A (en) * 1920-11-10 1922-01-17 Joseph N Kelman Cushion for vehicles
US1529138A (en) * 1922-06-09 1925-03-10 United Air Spring Company Supporting mechanism
US2729441A (en) * 1951-06-22 1956-01-03 Henss Paul Suspension system, especially for vehicles
US3263985A (en) * 1963-08-07 1966-08-02 Planta Kurt Shock absorber

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4053148A (en) * 1972-06-12 1977-10-11 Chalmers Wallace G Rubber spring and vehicle suspension incorporating said spring
US3874626A (en) * 1972-07-08 1975-04-01 Bremshey Ag Seat, particularly for automotive vehicles
US5765802A (en) * 1996-08-02 1998-06-16 H.O. Bostrom Company, Inc. Low profile seat suspension
US5871198A (en) * 1996-08-02 1999-02-16 H. O. Bostrom Company, Inc. Low profile seat suspension
GB2402870A (en) * 2003-06-16 2004-12-22 Dronsfield Technologies Ltd Suspension seat
US20070083965A1 (en) * 2005-09-20 2007-04-19 Sport Helmets Inc. Lateral displacement shock absorbing material
US7677538B2 (en) * 2005-09-20 2010-03-16 Sport Helmets Inc. Lateral displacement shock absorbing material
US20100258988A1 (en) * 2005-09-20 2010-10-14 Sport Helmets, Inc. Embodiments of Lateral Displacement Shock Absorbing Technology and Applications Thereof
US8726424B2 (en) 2010-06-03 2014-05-20 Intellectual Property Holdings, Llc Energy management structure
US9314062B2 (en) 2010-10-06 2016-04-19 Cortex Armour Inc. Shock absorbing layer with independent elements, and protective helmet including same
USD679058S1 (en) 2011-07-01 2013-03-26 Intellectual Property Holdings, Llc Helmet liner
US9516910B2 (en) 2011-07-01 2016-12-13 Intellectual Property Holdings, Llc Helmet impact liner system
USD683079S1 (en) 2011-10-10 2013-05-21 Intellectual Property Holdings, Llc Helmet liner
US9320311B2 (en) 2012-05-02 2016-04-26 Intellectual Property Holdings, Llc Helmet impact liner system
US9894953B2 (en) 2012-10-04 2018-02-20 Intellectual Property Holdings, Llc Helmet retention system
US10595578B2 (en) 2012-10-04 2020-03-24 Intellectual Property Holdings, Llc Helmet retention system
USD733972S1 (en) 2013-09-12 2015-07-07 Intellectual Property Holdings, Llc Helmet
US9743701B2 (en) 2013-10-28 2017-08-29 Intellectual Property Holdings, Llc Helmet retention system
US20150166309A1 (en) * 2013-12-13 2015-06-18 Tünkers Maschinenbau Gmbh Oscillation damper for vibration drivers
US9567192B2 (en) * 2013-12-13 2017-02-14 Tunkers Maschinenbau Gmbh Oscillation damper for vibration drivers
USD807796S1 (en) 2016-03-18 2018-01-16 Hendrickson Usa, L.L.C. Load cushion

Also Published As

Publication number Publication date
YU31248B (en) 1973-02-28
GB1251635A (xx) 1971-10-27
ES374327A1 (es) 1971-12-16
AT302825B (de) 1972-10-25
DE6905646U (de) 1969-05-14
BE743953A (xx) 1970-05-28
SE363061B (xx) 1974-01-07
NL7000924A (xx) 1970-08-17
FR2030981A5 (xx) 1970-11-13
CS154653B2 (xx) 1974-04-30

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