FR2596969A1 - Suspended seat having a reduced seating height - Google Patents

Suspended seat having a reduced seating height Download PDF

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Publication number
FR2596969A1
FR2596969A1 FR8605337A FR8605337A FR2596969A1 FR 2596969 A1 FR2596969 A1 FR 2596969A1 FR 8605337 A FR8605337 A FR 8605337A FR 8605337 A FR8605337 A FR 8605337A FR 2596969 A1 FR2596969 A1 FR 2596969A1
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FR
France
Prior art keywords
seat
suspension
height
suspended
double
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.)
Granted
Application number
FR8605337A
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French (fr)
Other versions
FR2596969B1 (en
Inventor
Guy Hallet
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SIFRA SARL
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SIFRA SARL
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 SIFRA SARL filed Critical SIFRA SARL
Priority to FR8605337A priority Critical patent/FR2596969B1/en
Publication of FR2596969A1 publication Critical patent/FR2596969A1/en
Application granted granted Critical
Publication of FR2596969B1 publication Critical patent/FR2596969B1/en
Expired legal-status Critical Current

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Classifications

    • 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
    • B60N2/503—Seat suspension devices attached to the backrest
    • 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
    • B60N2/504—Seat suspension devices attached to the base and the backrest
    • 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
    • B60N2/505—Adjustable suspension including height adjustment
    • 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
    • B60N2/507—Parallelogram-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
    • B60N2/506—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
    • B60N2/509—Seat guided by slides or the like
    • 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
    • B60N2/54—Seat suspension devices using mechanical springs
    • B60N2/544—Compression or tension springs

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Seats For Vehicles (AREA)

Abstract

The invention relates to a suspended seat, the construction type of which makes it possible to obtain a reduced seating and use height. It consists of a slightly oblique rear casing 1, integral with the base 2, the assembly being L-shaped. This casing acts as a rail for a trolley 4 which is movable in a practically vertical position, drawn back by helical springs 9 and 10 with adjustable stiffness 11 and assisted by a hydraulic double-acting dampener 12. A removable chair 5 is connected to this trolley 4 by means of two lugs 7 and of a double rack 6, enabling height adjustment. This seat can be used on land vehicles which have little or no suspension, and which provide too large a seating height with conventional suspended seats.

Description

La présente invention concerne un siege suspendu compact, à hauteur d'assise et d'utilisation reduites, dont le fauteuil est relié à la suspension, en porte à faux, par sa partie arrière seulement et permettant, indépendamment de la course de la suspension, un réglage en hauteur facile par système à crémaillère. The present invention relates to a compact suspended seat, with reduced seat height and use, the chair of which is connected to the suspension, cantilevered, by its rear part only and allowing, independently of the stroke of the suspension, easy height adjustment by rack system.

Habituellement, les sièges suspendus sont réalisés selon les trois modes de construction suivants
Suspension à parallélogramme (fig. 1).Usually, suspended seats are made according to the following three construction modes
Parallelogram suspension (fig. 1).

Suspension à levier et guidage arrière combinés (fig. 2). Combined lever suspension and rear guide (fig. 2).

Suspension à bielles montées en "ciseaux" (fig. 3). Suspension with connecting rods mounted in "scissors" (fig. 3).

Ces trois formules offrent comme inconvénient majeur d'être encombrantes au niveau de la hauteur d'assise, ce qui est, dans l'utilisation de ces produits, souvent très préjudiciable. These three formulas offer the major drawback of being bulky in terms of seat height, which is, in the use of these products, often very detrimental.

Le dispositif, selon l'invention a pour objet un siège suspendu (fig.4) destiné à équiper les engins terrestres ne possédant que peu ou pas de suspension, tels que : tracteurs agricoles ou forestiers, engins de travaux publics, engins de manutention, véhicules utilitaires et divers. The device according to the invention relates to a suspended seat (fig. 4) intended to equip land vehicles with little or no suspension, such as: agricultural or forestry tractors, public works vehicles, handling equipment, utility and miscellaneous vehicles.

L'originalité de ce siège, par rapport aux modèles existants sur le marché, réside principalement dans le fait que le fauteuil est monté de ma nière mobile, sur le plan vertical, complètement en porte à faux, c'est-a- dire, sans aucune liaison inférieure avec l'embase du siège comme celà se pratique habituellement. La liaison et le maintien opérationnels du fauteuil sont assurés uniquement par l'arrière de ce fauteuil, solidaire d'un chariot mobile (4) sur un plan vertical très légèrement oblique évoluant sur un rail (I) faisant bloc, en forme de L légèrement ouvert, avec la semelle (2) selon le débattement de la suspension. The originality of this seat, compared to existing models on the market, lies mainly in the fact that the armchair is mounted in a movable manner, vertically, completely cantilevered, that is to say, without any lower connection with the seat base as is usually done. The operational connection and maintenance of the wheelchair is ensured only by the rear of this wheelchair, secured to a mobile carriage (4) on a very slightly oblique vertical plane moving on a rail (I) forming a block, slightly L-shaped open, with the sole (2) depending on the suspension travel.

On comprend de suite l'intérêt d'un tel produit ainsi conçu qui permet d'obtenir une position de talonnage extremement basse ainsi que toutes les autres positions contenues dans la valeur de la course verticale, avantages jamais obtenus sur les autres constructions. We immediately understand the interest of such a product thus designed which makes it possible to obtain an extremely low tailgating position as well as all the other positions contained in the value of the vertical stroke, advantages never obtained over other constructions.

De même, dans ce système, le rendement de la suspension n'est absolument pas variable en fonction de la position du conducteur sur son fauteuil (centre de gravité du conducteur, mobile par rapport au plan d'assise du siège, notamment dans l'axe longitudinal). Cette qualité n'est pas obtenue dans le cas des suspensions du type à levier et guidage arrière combinés. Similarly, in this system, the performance of the suspension is absolutely not variable depending on the position of the driver on his chair (center of gravity of the driver, movable relative to the seat seating plane, in particular in the longitudinal axis). This quality is not obtained in the case of suspensions of the lever and rear guide type combined.

Par contre le résultat enregistre s'apparente aux performances des meilleurs sièges réalisés avec systèmes de bielles montées en ciseaux ou en parallélogramme qui sont, elles aussi, insensibles à la position de la masse du conducteur, dans la surface du coussin du fauteuil, mais présentent l'inconvénient, comme indiqué précédemment de prendre de la hauteur sous le coussin. On the other hand, the recorded result is similar to the performance of the best seats produced with systems of connecting rods mounted in scissors or in a parallelogram which are also insensitive to the position of the driver's mass in the surface of the cushion of the chair, but have the disadvantage, as indicated above, of gaining height under the cushion.

La seconde originalité de ce siège se situe au niveau de la liaison du fauteuil avec la suspension, (fig. 5) qui s'effectue à l'aide d'un système à crémaillère réalisé à la presse par trous (6) et ergots obliques (7) offrant une qualite d'autoblocage, proportionnellement efficace en fonction de la charge appliquée et rattrapant automatiquement les jeux. Le réglage du système à crémaillère, donc de la hauteur, s'effectue de manière rapide et aisée par l'action simultanée de deux leviers latéraux (8) situés derrière le fauteuil. The second originality of this seat is at the level of the connection of the armchair with the suspension, (fig. 5) which is carried out using a rack and pinion system carried out with the press by holes (6) and oblique lugs (7) offering a quality of self-blocking, proportionally effective as a function of the load applied and automatically taking up play. The adjustment of the rack system, and therefore of the height, is carried out quickly and easily by the simultaneous action of two lateral levers (8) located behind the chair.

Une caractéristique importante de cette réalisation réside dans le fait qu'elle permet au fauteuil d'être completement désolidarisé de la suspension et d'offrir ainsi la possibilité de le ranger à l'abri des intewr péries ou du soleil lorsque l'engin qui reçoit ce siège ne peut etre garé sous abri. Cette particularité n'existe pas sur le marché actuel du siège suspendu. An important characteristic of this embodiment lies in the fact that it allows the armchair to be completely detached from the suspension and thus offers the possibility of storing it sheltered from intewr peries or from the sun when the machine which receives this seat cannot be parked under cover. This feature does not exist on the current suspended seat market.

On comprendra aisément tout l'intérêt qu'offre une telle possibilité. It is easy to understand all the interest offered by such a possibility.

La troisième originalité se rapporte au principe de suspens ion proprement dit (fig. 6) qui est obtenu selon une réalisation classique connue (ressorts hélicoidaux (9 et 10) travaillant à la traction, réglables en raideur par système à pas de vis (I) assistés d'un amortisseur télescopique, hydraulique, à double effet (12) mais qui, par contre, utilise ces ressorts hélicoidaux, fonctionnant par paires, montés de manière coaxiale ce qui permet de réduire de manière considérable, la largeur de la suspension.  The third originality relates to the principle of suspension proper (fig. 6) which is obtained according to a known conventional embodiment (helical springs (9 and 10) working in traction, adjustable in stiffness by screw pitch system (I) assisted by a telescopic, hydraulic, double-acting shock absorber (12) but which, on the other hand, uses these helical springs, operating in pairs, mounted coaxially which allows the width of the suspension to be reduced considerably.

Claims (4)

REVENDICATIONS 1) Siège suspendu permettant d'obtenir une hauteur d'utilisation et de talonnage extrêmement réduite caractérisé en ce qu'il comporte a) un boitier arrière légèrement oblique (1) relie de manière rigide à l'embase du siège (2) qui peut néanmoins recevoir un réglage longitudinal (3) 1) Suspended seat making it possible to obtain an extremely reduced height of use and tailgating, characterized in that it comprises a) a slightly oblique rear case (1) rigidly connects to the seat base (2) which can nevertheless receive a longitudinal adjustment (3) Ce boitier oblique sert de rail de guidage à un chariot mobile(4) selon un mouvement pratiquement vertical, par l'intermédiaire de quatre galets (13) à faible coefficient de frottement et patins stabilisateurs latéraux (14) dont la suspension est assurée par un système à ressorts hélicoïdaux coaxiaux (9 et 10) réglables en raideur (11) et amortisseur hydraulique à double effet (12).This oblique box serves as a guide rail for a mobile carriage (4) in a practically vertical movement, by means of four rollers (13) with low coefficient of friction and lateral stabilizing pads (14) whose suspension is provided by a coaxial coil spring system (9 and 10) adjustable in stiffness (11) and double-acting hydraulic shock absorber (12). Ce boitier comporte également le système de crémaillère femelle du réglage en hauteur (6).This box also includes the female rack system of the height adjustment (6). b) un fauteuil amovible (5) possédant un double système d'ergotage (7) venant s'enclencher dans deux crémaillères femelles (6).b) a removable armchair (5) having a double latching system (7) which engages in two female racks (6). 2) Siège suspendu selon la revendication 1 caractérisé par un fauteuil réglable (5) simplement et facilement en hauteur par système à crémaillère (6 et 7). 2) Suspension seat according to claim 1 characterized by an adjustable chair (5) simply and easily in height by rack system (6 and 7). 3) Siège suspendu selon les revendications 1 et 2 caractérisé par un fauteuil réglable en hauteur et surtout, amovible, permettant une mise à l'abri, une dissuasion volontaire de l'utilisation de l'engin équipé de ce siège, ou un échange facile lorsque le revêtement est détérioré par exemple. 3) Suspended seat according to claims 1 and 2 characterized by an adjustable and above all removable armchair, allowing sheltering, voluntary deterrence from the use of the machine equipped with this seat, or easy exchange when the coating is damaged for example. 4) Siège suspendu comportant une suspension classique à ressorts hélicol- daux et amortisseur hydraulique à double effet connue, mais dont le montage des ressorts est effectué par paires, de manière coaxiale.  4) Suspended seat comprising a conventional suspension with helical springs and known double-acting hydraulic shock absorber, but the mounting of the springs is carried out in pairs, coaxially.
FR8605337A 1986-04-15 1986-04-15 SUSPENDED SEAT WITH REDUCED SEAT HEIGHT Expired FR2596969B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8605337A FR2596969B1 (en) 1986-04-15 1986-04-15 SUSPENDED SEAT WITH REDUCED SEAT HEIGHT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8605337A FR2596969B1 (en) 1986-04-15 1986-04-15 SUSPENDED SEAT WITH REDUCED SEAT HEIGHT

Publications (2)

Publication Number Publication Date
FR2596969A1 true FR2596969A1 (en) 1987-10-16
FR2596969B1 FR2596969B1 (en) 1989-06-23

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FR8605337A Expired FR2596969B1 (en) 1986-04-15 1986-04-15 SUSPENDED SEAT WITH REDUCED SEAT HEIGHT

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0524569A2 (en) * 1991-07-26 1993-01-27 GOLDONI S.p.A. Compact rear-mounted device for adjusting the suspension of driver's seats, particularly for agricultural machines

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1580296A1 (en) * 1966-09-16 1970-11-05 Lemfoerder Kunststoff Gmbh & C Suspended vehicle seat, especially for tractors and machines
FR2031438A1 (en) * 1969-02-15 1970-11-20 Grammer Willibald
DE1630164A1 (en) * 1967-09-14 1971-04-15 Bremshey & Co Vehicle seat
FR2291059A1 (en) * 1974-11-16 1976-06-11 Brendel Apparatebau Helmut Arn ELASTIC SUSPENSION WORK SEAT, ADJUSTABLE IN HEIGHT AND LENGTH
US4026601A (en) * 1975-06-23 1977-05-31 National Seating Company Air suspension seat assembly
DE2736242A1 (en) * 1977-08-11 1979-02-22 Grammer Willibald Fa DRIVER'S SEAT WITH AUTOMATIC WEIGHT ADJUSTMENT
US4186963A (en) * 1978-11-01 1980-02-05 Sears Manufacturing Company Upright vehicle seat support

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1580296A1 (en) * 1966-09-16 1970-11-05 Lemfoerder Kunststoff Gmbh & C Suspended vehicle seat, especially for tractors and machines
DE1630164A1 (en) * 1967-09-14 1971-04-15 Bremshey & Co Vehicle seat
FR2031438A1 (en) * 1969-02-15 1970-11-20 Grammer Willibald
FR2291059A1 (en) * 1974-11-16 1976-06-11 Brendel Apparatebau Helmut Arn ELASTIC SUSPENSION WORK SEAT, ADJUSTABLE IN HEIGHT AND LENGTH
US4026601A (en) * 1975-06-23 1977-05-31 National Seating Company Air suspension seat assembly
DE2736242A1 (en) * 1977-08-11 1979-02-22 Grammer Willibald Fa DRIVER'S SEAT WITH AUTOMATIC WEIGHT ADJUSTMENT
US4186963A (en) * 1978-11-01 1980-02-05 Sears Manufacturing Company Upright vehicle seat support

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0524569A2 (en) * 1991-07-26 1993-01-27 GOLDONI S.p.A. Compact rear-mounted device for adjusting the suspension of driver's seats, particularly for agricultural machines
EP0524569A3 (en) * 1991-07-26 1993-04-28 Goldoni S.P.A. Compact rear-mounted device for adjusting the suspension of driver's seats, particularly for agricultural machines

Also Published As

Publication number Publication date
FR2596969B1 (en) 1989-06-23

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