DK173454B1

DK173454B1 - Locking device for chair seats

Info

Publication number: DK173454B1
Application number: DK199100043A
Authority: DK
Inventors: Tore Lie; Lars Holstensson
Original assignee: Ring Mekanikk As
Priority date: 1988-07-27
Filing date: 1991-01-10
Publication date: 2000-11-20
Also published as: NO166684B; DE68913539D1; JPH0734773B2; AU4039389A; EP0426743A1; WO1990000871A1; NO883319L; FI90304B; DE68913539T2; NO883319D0; EP0426743B1; DK4391D0; FI90304C; JPH04501217A; DK4391A; FI910342A0; NO166684C

Description

DK 173454 B1DK 173454 B1

Den foreliggende opfindelse angår en låseindretning for et stolesæde med indstillelig vinkel i henhold til indledningen af patentkravet.The present invention relates to a locking device for an adjustable angle chair seat according to the preamble of the claim.

Der kendes flere principper for justering og låsning af stolesæders « vinkelposition, navnlig for kontorstole. Det er forlængst kendt at anvende buede 5 lameller fastgjort til sædets underside og ført imellem lameiblokke i en holder, ‘ der er fastgjort til stolens underdel, idet en bolt forløber igennem et centralt hul i lamelblokken og en spalte i hver af lamellerne. Låsning af sædet i en ønsket position sikres ved at spænde lameller og lamelblokken sammen, idet den anlægsoverflade, som behøves for at opnås tilstrækkelig friktion under 10 hensyntagen til kraften fra spændemekanismen, sikres ved bredden af lamellerne på begge sider af spalterne og ved deres antal.There are several principles known for adjusting and locking the seat positions' angular position, especially for office chairs. It has long been known to use curved 5 slats attached to the underside of the seat and passed between lamella blocks in a holder, which is attached to the lower part of the chair, with a bolt extending through a central hole in the slat block and a slot in each of the slats. Locking of the seat in a desired position is ensured by clamping the slats and the slat block together, the abutment surface needed to obtain sufficient friction while taking into account the force of the clamping mechanism is secured by the width of the slats on both sides of the slots and by their number.

Ved de kendte udførelser må bredde eller antal af lameller øges pga. spalten for at opnå den nødvendige friktionsoverflade under hensyntagen til den kraft, der kan forventes ved bespændingen. Udførelsen af spalter i 15 lamellerne og hullerne i de faste lameller kræver endvidere en yderligere operation under fremstillingsprocessen. Monteringen medfører også ekstra tid til at føre bolten igennem hullerne i de faste lameller og spalterne for at spænde lamellerne imod et fast anlæg. Der er ikke tåget hensyn til tolerancer under produktionen i forbindelse med samlingen af lamellerne.In the known embodiments, the width or number of slats must be increased due to the slit in order to obtain the necessary friction surface, taking into account the force expected at the tension. The design of slots in the slats and the holes in the slats also requires further operation during the manufacturing process. The mounting also gives extra time to pass the bolt through the holes in the fixed slats and the slots to tighten the slats against a fixed installation. Tolerances are not taken into account during production in connection with the assembly of the slats.

20 Med låseindretningen ifølge opfindelsen undgås de ovennævnte ulemper ved de kendte, modsvarende indretninger, og der opnås mulighed for indstilling af en ønsket position for lamellerne i holderen samt mulighed for senere justering af positionen af et betjeningshåndtag, når låseindretningen føres til spændt position. Disse fordele opnås ved låseindretningen ifølge opfindelsen, 25 som den fremgår af patentkravet.With the locking device according to the invention, the aforementioned disadvantages of the known matching devices are avoided, and it is possible to set a desired position for the slats in the holder and the possibility of later adjusting the position of an operating handle when the locking device is moved to a tensioned position. These advantages are obtained by the locking device according to the invention, as is apparent from the claim.

Opfindelsen forklares nærmere i det følgende under henvisning til tegningen, hvorpå fig. 1 viser et snit langs l-l i fig. 3, 30 fig. 2 viser et snit langs Il-Il i fig. 1, og fig. 3 viser et billede fra højre i fig. 1.The invention will be explained in more detail below with reference to the drawing, in which fig. 1 is a sectional view along FIGS. 3, 30 FIG. 2 shows a section along Il-Il in fig. 1, and FIG. 3 is a right-hand view of FIG. First

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Flere buede lameller 1 er fastgjort til undersiden af et stolesæde og rager igennem en holder 7 fastgjort til stolens underdel. I holderen er der arrangeret holdelameller på en sådan måde, at alle buede lameller 1 holdes imellem faste lameller. De faste lameller 2 er forsynet med recesser, så de kan optages ved v 5 holderens 7 sidekanter på en sådan måde, at lamellerne fastholdes i holderen ' 7. Mod begge sider af lamelpakken er der arrangeret en bespændingssko 3, 4, ‘ fortrinsvis lidt skålformet og i anlæg mod en ringformet overflade mod en holdelamel 2. En bolt 5 er arrangeret igennem et hul i holderen 7 og forbundet drejbart med bespændingsskoen 3 på en sådan måde, at bespændingsskoen 3 10 ved drejning af bolten 5 kan forskydes henimod eller bort fra den yderste lamel 2. Efter den ønskede indstilling er foretaget af bolten 5 ved hjælp af gevindet 6, kan bolten fikseres med en møtrik (ikke vist).Several curved slats 1 are attached to the underside of a chair seat and project through a holder 7 attached to the lower part of the chair. In the holder, holding slats are arranged in such a way that all curved slats 1 are held between fixed slats. The fixed slats 2 are provided with recesses so that they can be accommodated at the lateral edges of the holder 5 in such a way that the slats are retained in the holder '7. Against both sides of the slat package a tensioning shoe 3, 4,' preferably slightly bowl-shaped, is arranged. and abutting against an annular surface against a retaining bracket 2. A bolt 5 is arranged through a hole in the holder 7 and pivotally connected to the clamping shoe 3 in such a way that, by turning the bolt 5, the clamping shoe 310 can be displaced towards or away from it. outer slat 2. After the desired adjustment is made by the bolt 5 by means of the thread 6, the bolt can be fixed with a nut (not shown).

Mod lamelpakkens modsatte sider ligger der én bespændingssko 4 imod lamellen 2, idet en bolt 8 holdes udløseligt forbundet med bespændingsskoen 4 15 og skruet igennem et hul i holderen 7. Bolten 8 forløber fortrinsvis ud til siden for stolen, og en betjeningsarm 9 er forbundet med enden af bolten 8 i en passende position, så den kan betjenes af brugeren. Drejning af betjeningsarmen 9 vil spænde bespændingsskoen 4 imod lamellen 2.Against the opposite sides of the slat package there is one clamping shoe 4 against the slat 2, holding a bolt 8 releasably connected to the clamping shoe 4 15 and screwed through a hole in the holder 7. The bolt 8 preferably extends to the side of the chair and an operating arm 9 is connected to the end of the bolt 8 in a suitable position so that it can be operated by the user. Turning the control arm 9 will clamp the clamping shoe 4 against the slat 2.

Ved justering af bolten 5 kan låseindretningen justéres, når lamellerne er 20 blevet slidt, og der kan opnås en ønsket position for betjeningsarmen 9 gennem justeringen. På samme måde kan en ønsket position for lamellerne i holderen justeres gennem justering ved boltene 5 og 8.By adjusting the bolt 5, the locking device can be adjusted when the slats 20 have been worn and a desired position of the operating arm 9 can be obtained through the adjustment. Similarly, a desired position of the slats in the holder can be adjusted by adjusting at the bolts 5 and 8.

Indledningen til det efterfølgende patentkrav baseret på DÉ 25 23 308, der beskriver en indretning til låsning af et stolesæde i en ønsket højde.The preamble to the subsequent claim based on DÉ 25 23 308, which describes a device for locking a chair seat at a desired height.

25 Indretningen omfatter flere forskydelige lameller, der er forbundet til stolesædet og strækker sig gennem en holder. Holderen omfatter faste friktionseleménter. Låseorganeme til låsning af stolesædet indeholder en arm med et excentrisk presseorgan. Ved låsning af stolesædet i en given højde, bringes presseorganet til at presse mod det yderste friktionselemerit på den ene sidé af 30 holderen, så at lamellerne fastspændes mellem friktionselementerne.The device comprises several slidable slats connected to the seat and extending through a holder. The holder includes fixed friction elements. The locking means for locking the chair seat contain an arm with an eccentric pressing means. By locking the chair seat at a given height, the pressing means is caused to press against the outer friction element on one side of the holder so that the slats are clamped between the friction elements.

Claims

1. Device for locking a chair seat in a desired angular position and | comprising a plurality of first slats (2) retained by a holder 5 (7), a plurality of second slats (1) which are free of holes and extending between said first slats (2) across their width, the second louvers being connected to the chair seat at one end, while the other louvers are displaceable relative to the first louvers, as well as clamping means for locking the chair seat position, characterized in that the clamping means comprise a first and a second clamping shoe (3, 4) located at opposite ends of the holder (7), which abuts one of the outermost first slats and which can be clamped by a first and a second bolt (5, respectively). 8) and that the first and second bolts are axially aligned and allow adjustment of the clamping points of the clamping shoes (3,4).