DK154923B

DK154923B - WASTE DEVICE AT A CHAIR

Info

Publication number: DK154923B
Application number: DK543579AA
Authority: DK
Inventors: Lars Bertil Eugen Mattsson
Original assignee: Svenska Vision Ab
Priority date: 1979-02-13
Filing date: 1979-12-19
Publication date: 1989-01-09
Also published as: DK543579A; FI794013A; DK154923C; FI67173C; GB2041439B; SE426019B; DE2951255A1; SE7901247L; NO794104L; IT8019786A0; NO151846B; FR2448881B3; FI67173B; IT1141201B; NO151846C; GB2041439A; FR2448881A1

Description

DK 154923 BDK 154923 B

Opfindelsen angår en låseanordning af den art, som omfatter et på et bæreorgan forskydeligt lejret element og et låse-• organ til udløselig fastlåsning af elementet i indstillelig stilling på bæreorganet, til anvendelse ved en stol, 5 f.eks. en køretøjsstol eller operatørstol. Nærmere bestemt angår opfindelsen en sådan anordning, i hvilken bæreorganet har to parallelle, i deres tværretning i indbyrdes afstand beliggende styr, langs hvilke nævnte element er forskydeligt styret ved hjælp af to med dette forbundne glidelejeor-10 ganer, som ligger i indbyrdes afstand i en retning på tværs af det forskydelige elements bevægelsesretning og er monteret i glidende indgreb med hvert sit af de to styr.BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a locking device of the type comprising a member displaceable on a support member and a locking means for releasably locking the member in an adjustable position on the support member, for use with a chair, e.g. a vehicle seat or operator seat. More particularly, the invention relates to such a device in which the carrier has two parallel, spaced-apart guides in their transverse direction, along which said element is displaceably guided by two spaced-apart sliding bearing members which are spaced apart in a spaced apart position. direction transverse to the direction of movement of the sliding element and is mounted in sliding engagement with each of the two guides.

Det forskydelige element kan f.eks. bestå af en stols sæde eller rygstøtte. Det kan imidlertid også udgøres af en anden 15 del af en stol eller en i tilslutning til en stol monteret indretning.The displaceable element may e.g. consist of a chair seat or backrest. However, it may also comprise another part of a chair or a device mounted adjacent to a chair.

De låseorganer, som benyttes ved de tidligere kendte anordninger af den ovenfor angivne art, har i praksis vist sig at være ufordelagtige i forskellige henseender. Formålet 20 med opfindelsen er derfor at tilvejebringe en ny og fordelagtig udformning af låseorganerne for en anordning af nævnte art. Med dette for øje foreslås det ifølge opfindelsen, at anordningens låseorgan skal omfatte en fjedrende bøjelig stav, som strækker sig i en svagt krummet, fjederforspændt tilstand 25 mellem de to glidelejeorganer og med sine ender er ført gennem styrehuller i disse og med sine endeflader kan JLigge an under tryk mod hvert sit af de to styr og derved fastholde det forskydelige element til disse ved friktion med styrene, og at staven ved sin midte er forbundet med et manuelt påvirke-30 ligt, ved det forskydelige element bevægeligt lejret udrykningsorgan, ved hjælp af hvilket den under øgning af sin fjederforspænding kan bibringes en således større krumning, at friktionsindgrebet med styrene ophæves midlertidigt.The locking means used in the prior art devices of the kind mentioned above have in practice proved to be disadvantageous in various respects. The object 20 of the invention is therefore to provide a new and advantageous design of the locking means for a device of said kind. To this end, it is proposed according to the invention that the locking means of the device should comprise a resiliently flexible rod extending in a slightly curved, spring-biased state 25 between the two sliding bearing members and with its ends passed through guide holes therein and with its end faces pressurized against each of the two guides, thereby holding the slidable member thereto by friction with the guides, and the rod at its center is connected to a manually actuated, displaceable member, which is movable by the slidable element, by means of which, while increasing its spring bias, can cause a greater curvature such that the frictional engagement with the guides is temporarily lifted.

Den ifølge opfindelsen foreslåede udformning af låseorganeme 55 medfører både i fremstillingsteknisk og i funktionel hensendeThe design of the locking means 55 proposed in accordance with the invention entails both in manufacturing and in functional terms.

2 DK 154923 B2 DK 154923 B

betydelige fordele- i forhold til de låseorganer, som tidligere anvendtes ved anordninger af den foreliggende art.significant advantages over the locking means previously used in devices of the present kind.

Ifølge en foretrukken udførelsesform for opfindelsen kan der i styrene være udformet langsgående spor, som den 5 fjedrende stavs endepartier rager ind i. Udrykningsorganet kan omfatte en i sin længderetning forskydelig stang, som ved sin ene ende er forbundet med den fjedrende stav, medens den ved sin anden ende er forsynet med eller koblet til et manøvrehåndtag. Alternativt kan frikoblingsorganet 10 være dannet af en svingelig arm.According to a preferred embodiment of the invention, longitudinal grooves in which the end portions of the 5 resilient rod extend into the guides may be formed. its other end is provided with or coupled to a maneuvering handle. Alternatively, the release member 10 may be formed by a pivotal arm.

Opfindelsen vil blive nærmere beskrevet i det følgende under henvisning til tegningen, hvor fig* 1 i perspektiv viser en anordning ifølge opfindelsen, medens 15 fig. 2 og 3 er delbilleder i snit og i større målestok.BRIEF DESCRIPTION OF THE DRAWINGS The invention will be described in more detail below with reference to the drawing, in which FIG. 2 and 3 are sectional and sectional views on a larger scale.

På tegningen betegner 10 generelt et af presset metalplade bestående element, der udgør en ramme for en rygstøtte for en stol, f.eks. en køretøjsstol. Elementet 10 er forsynet med to langsgående, i indbyrdes afstand i deres 20 tværretning beliggende rørstykker 11, der er fastsvejst til elementet 10. De to rørstykker 11 danner glidemuffer, ved hjælp af hvilke elementet 10 er lejret forskydeligt på langs på to parallelle, rørformede styr 12, som ligger i indbyrdes afstand i deres tværretning, svarende til af-25 standen mellem de to som glidemuffer tjenende rørstykker 11. Styrene 12 er på passende måde (ikke vist) stift forbundet med hinanden og indgår i et bæreorgan for elementet 10.In the drawing, 10 generally denotes an element of pressed metal plate which constitutes a frame for a backrest for a chair, e.g. a vehicle seat. The element 10 is provided with two longitudinal, spaced-apart tubes 11, which are welded to each other in a transverse direction, which are welded to the element 10. The two tubes 11 form sliding sleeves, by means of which the element 10 is slidably longitudinally mounted on two parallel tubular guides. 12, which are spaced apart in their transverse direction, corresponding to the distance between the two pipe pieces serving as sliding sleeves 11. The guides 12 are suitably (not shown) rigidly connected to each other and are included in a support for the element 10.

For at muliggøre udløselig fastlåsning af elementet 10 i indstillelig stilling på styrene 12 er anordningen forsynet 30 med et låseorgan, som er dannet af en fjedrende bøjelig stav 13, der er monteret i en svagt krummet, fjederforspændt tilstand mellem de to rørstykker 11. Ved sine ender ragerIn order to enable releasable locking of the element 10 in an adjustable position on the guides 12, the device 30 is provided with a locking means formed by a resiliently flexible rod 13 mounted in a slightly curved, spring-biased state between the two pipe pieces 11. At its ends projecting

DK 154923BDK 154923B

3 staven 13 gennem styrehuller 14 i rørstykkerne 11. Stavens 13 længde er således valgt, at staven med sine endeflader 15 kan ligge an under tryk mod hvert sit af de to styr 12 for derigennem at fastholde det forskydelige element 5 10 i indstillelig stilling på styrene ved friktionsind greb med disse.3, the rod 13 through guide holes 14 in the tubes 11. The length of the rod 13 is chosen so that the rod, with its end faces 15, may be pressurized against each of the two guides 12, thereby holding the slidable element 5 10 in an adjustable position on the guides. by frictional engagement with these.

I den viste udførelsesform er de to styr 12 ved sine mod hinanden vendende sider forsynet med spor 12' (fig. 2), der er dannet af indpresninger i disse, og son stavens 13 10 endepartier rager ind i. Formålet med disse spor er blandt andet at hindre, at eventuelle grater på styrene, forårsaget af staven 13, skal give anledning til en øget friktion mellem de samvirkende lejeflader på styrene og rørstykkerne 11.In the illustrated embodiment, the two guides 12 are provided at their opposite sides with grooves 12 '(Fig. 2) formed by indentations therein, and the end portions of the rod 1310 protrude into. second, to prevent any burrs on the guides caused by the rod 13 to give rise to increased friction between the interacting bearing surfaces of the guides and the tubes 11.

15 For at muliggøre midlertidig ophævelse af friktionsindgrebet mellem staven 13 og styrene 12 når elementet 10 skal forskydes langs styrene, findes der et manuelt påvirkeligt udrykningsorgan, ved hjælp af hvilket staven under øgning af sin fjederforspænding kan bibringes en vis større krum-20 ning. Dette udrykningsorgan udgøres i den viste udførelsesform af en kort stang 16, som, hvilket tydeligst fremgår af fig. 3, er lejret i en på elementet 10 anbragt styremuffe 17, som en lejebøsning 18 er anbragt i. Stangen 16 strækker sig parallelt med de to rørstykker 11 og ligger 25 midt mellem disse. Ved sin øvre ende er stangen 16 forsynet med en gennemgående åbning 19, gennem hvilken den fjedrende stav 13 strækker sig, og ved sin anden ende er stangen 16 forsynet med et håndtag 20, ved hjælp af hvilket stangen 16 og dermed også den midterste del af staven 13 30 kan trykkes fjedrende opad mod virkningen af fjederforspændingen i staven 13. Kort under åbningen 19 er stangen 16 forsynet med en i et perifert spor i stangen optaget låsering 21, som begrænser stangens 16 bevægelse i opadgående retning.15 In order to allow for temporary lifting of the frictional engagement between the rod 13 and the guides 12 when the element 10 is to be displaced along the guides, there is a manually actuated emergency means, by means of which the rod can be increased to a certain degree of curvature while increasing its spring bias. This emergency means is constituted in the illustrated embodiment by a short rod 16 which, as is most clearly shown in FIG. 3, the bearing is mounted in a guide sleeve 17 mounted on the element 10, into which a bearing sleeve 18 is placed. The rod 16 extends parallel to the two pipe pieces 11 and lies 25 midway between them. At its upper end, the rod 16 is provided with a through opening 19 through which the resilient rod 13 extends, and at its other end, the rod 16 is provided with a handle 20, by means of which the rod 16 and thus also the middle portion of the the rod 13 30 can be resiliently pressed upwards against the action of the spring bias in the rod 13. Shortly below the opening 19, the rod 16 is provided with a locking ring 21 received in a peripheral groove in the rod, which restricts the movement of the rod 16 in an upward direction.

, DK 154923 B, DK 154923 B

44

Opfindelsen er ikke begrænset til den ovenfor beskrevne og på tegningen viste udførelsesform, som kan modificeres på forskellig vis inden for opfindelsens rammer. For eksempel kan det nævnes, at udrykningsorganet ikke behøver 5 at være en i længderetningen forskydeligt lejret stang.The invention is not limited to the embodiment described above and shown in the drawing, which can be modified in various ways within the scope of the invention. For example, it may be mentioned that the emergency means need not be a longitudinally displaceable rod.

Det kan således i stedet være dannet af en svingelig arm, som tillader en reduktion af den manuelle kraft, som udrykningsorganets manøvrehåndtag skal påvirkes med for at ophæve friktionsindgrebet mellem staven 13 og styrene 10 12.Thus, it may instead be formed by a pivotal arm which allows a reduction of the manual force with which the thrust lever's actuating handle must be actuated to cancel the frictional engagement between the rod 13 and the guides 10 12.

Claims

1. Locking device for a chair, e.g. a vehicle seat or operator chair, and of the type comprising a bearing (10) slidably displaceable on a support member and a locking member (13) for releasably locking the member in an adjustable position on the support member having two parallel, transverse directions thereof; spaced guide (12) along which said member (10) is slidably guided by two sliding bearing means (11) connected thereto, spaced apart in a direction transverse to the direction of movement of the slidable element (10), and is mounted in sliding engagement with each of the two guides (12), characterized in that said locking means comprises a resiliently flexible 15 rod (15) extending in a slightly curved, spring-biased state between the two sliding bearing members (l1) and with its ends passed through guide holes (14) therein and with its end faces (15) being able to abut pressure on each of the two guides (12), thereby holding the slidable element (10) thereto by friction with st and that the rod (13) is connected at its center with a manually actuated, displaceable member (16) movably mounted by the displaceable element (10), by which it can be imparted to a larger one during the increase of its spring for tension. curvature that the frictional engagement with the guides (12) is temporarily canceled.

Locking device according to claim 1, characterized in that the guides (12) are formed with longitudinal grooves (12 ')> into which the end portions of the rod (13) project into.

Locking device according to claim 1 or 2, characterized in that the pushing means comprises a longitudinally displaceable rod (16).

Locking device according to claim 1 or 2, characterized in that the disengaging means comprises a swivel arm.