HRP20000131A2

HRP20000131A2 - Adjustable support for backs of chairs or the like

Info

Publication number: HRP20000131A2
Authority: HR
Inventors: Carlos Marcelo Gomes Correia
Original assignee: Challenger Gestao E Consultado
Priority date: 1999-03-09
Filing date: 2000-03-08
Publication date: 2001-06-30
Also published as: PL338876A1; SK3212000A3; IT247718Y1; ITPD990024U1

Description

Predmetni izum se odnosi na podesivi držač naslona stolaca ili sličnog. The present invention relates to an adjustable seat back holder or the like.

Raširenost stolaca konstruiranih posebno da zadovolje zahtjeve korisnika u pogledu udobnog položaja, čak i tokom dugih perioda sjedenja, je u stalnom porastu, posebno za korištenje u uredima, ali također i u domovima. The prevalence of chairs designed specifically to meet the user's requirements for a comfortable position, even during long periods of sitting, is constantly increasing, especially for use in offices, but also in homes.

Detaljnije, anatomske i ergonomske studije su otkrile posebnu važnost geometrije i mogućnosti strukturne prilagodbe spoja između sjedala i naslona stolca. Detailed, anatomical and ergonomic studies have revealed the special importance of geometry and the possibility of structural adjustment of the connection between the seat and the back of the chair.

U tu svrhu su analizirana mnoga rješenja koja su usprkos različitosti konstrukcija raznih komercijalno raspoloživih modela, dovela do zajedničke konstrukcije kod koje se donja konzola, koja se spaja na sjedalo stolca, nastavlja u držač koji nosi naslon. For this purpose, many solutions were analyzed that, despite the different constructions of various commercially available models, led to a common construction where the lower console, which is connected to the seat of the chair, continues into the bracket that carries the backrest.

Ipak, daljnji konstruktivni sklopovi se dodaju kada je neizbježno potrebno da se omogući blokiranje u raznim kutnim položajima prema građi korisnika stolca, te da se postigne realno vrijeme prilagodbe položajima koje će zauzeti korisnik tokom nekog vremena. However, further constructive assemblies are added when it is inevitably necessary to enable blocking in various angular positions according to the body of the chair user, and to achieve real-time adaptation to the positions that the user will occupy over a period of time.

U tu svrhu, blokiranje podešenog položaja držača, posebno u odnosu na osnovnu konzolu, sada se osigurava pomoću višeslojnih (pločastih) paketa koji u osnovi djeluju kao vrsta tarne spojke koja se aktivira ili deaktivira pomoću mehanizama za blokadu i otpuštanje, a koji su na raspolaganju korisniku za aktiviranje. To this end, the locking of the adjusted position of the bracket, especially in relation to the base bracket, is now provided by multi-layer (plate) packages which basically act as a type of friction clutch that is activated or deactivated by means of lock and release mechanisms, which are available to the user for activation.

Nadalje, obično su predviđeni elastični povratni elementi koji nastoje smanjiti kut između držača i konzole^ te stoga omogućavaju optimalnu brzinu prilagodljivosti, u određenim granicama, kako bi se što je moguće više pratilo varijacije položaja korisnika. Furthermore, elastic return elements are usually provided which tend to reduce the angle between the holder and the console^ and therefore allow an optimal rate of adaptability, within certain limits, to follow as much as possible the variations of the user's position.

U svakom slučaju, komercijalno raspoloživa rješenja uključuju znatan broj konstruktivnih kompleksnih sklopova koji dovode do velikog povećanja proizvodnih troškova, što se može opravdati jedino kod posebno unaprijeđenih modela namijenjenih izuzetno snažnim korisnicima. In any case, commercially available solutions include a significant number of constructive complex assemblies that lead to a large increase in production costs, which can be justified only in specially improved models intended for extremely powerful users.

Cilj predmetnog izuma je da osigura podesivi držač naslona stolaca ili sličnog, koji rješava nedostatke zapažene kod komercijalno raspoloživih rješenja, posebno omogućavajući izuzetnu ergonomsku i funkcionalnu podesivost, istovremeno pružajući veliku konstrukcijsku jednostavnost i time brzu i laganu proizvodnju, s pozitivnim utjecajem na proizvodne troškove. The aim of the present invention is to provide an adjustable holder for the back of chairs or the like, which solves the shortcomings observed in commercially available solutions, especially enabling exceptional ergonomic and functional adjustability, at the same time providing great structural simplicity and thus fast and easy production, with a positive impact on production costs.

Unutar opsega navedenog cilja, jedan od zadataka predmetnog izuma je i dobivanje držača koji je jako pouzdan u pogledu čvrstoće i isto tako fleksibilan u pogledu primjene za različite tipove stolaca. Within the scope of the stated goal, one of the tasks of the present invention is to obtain a holder that is very reliable in terms of strength and also flexible in terms of application for different types of chairs.

Drugi zadatak predmetnog izuma je da se dobije držač kojeg korisnik može lagano podestiti bez posebnih napora ili teškoća. Another task of the subject invention is to obtain a holder that the user can easily adjust without special efforts or difficulties.

Daljnji cilj predmetnog izuma je dobivanje držača koji se može lagano integrirati u kutijaste (sandučaste) konstrukcije ili u svakom slučaju u rješenjima koja predstavljaju znatnu estetsku i stilsku vrijednost. A further goal of the present invention is to obtain a holder that can be easily integrated into box-like constructions or in any case in solutions that represent considerable aesthetic and stylistic value.

Slijedeći cilj predmetnog izuma je postizanje držača koji se može proizvoditi korištenjem konvencionalnih tehnologija i opreme. Another object of the present invention is to achieve a holder that can be manufactured using conventional technologies and equipment.

Navedeni ciljevi kao i drugi, koji će postati jasni iz daljnjeg teksta, postignuti su podesivim držačem za naslone stolaca ili sličnog, tipa koji se sastoji od donje konzole koja se učvršćuje na sjedalo stolca, a koja je oblikovana i spojena pomoću elastičnih povratnih elemenata na stražnji nosač, pri čemu je navedeni nosač naznačen time da se prva dva pločasta elementa nastavljaju od kraja navedenog nosača koji je postavljen u smjeru prema donjoj konzoli i izvedeni su s koaksijalnim provrtima u koje se umeće prvi zglobni svornjak, pri čemu se navedeni svornjak također umeće u odgovarajuće provrte koji su izvedeni u navedenoj konzoli, koja je umetnuta između njih, a druga dva pločasta elementa nastavljaju se od navedene konzole i umetnuti su između navedena prva dva pločasta elementa, te izvedeni s koaksijalnim provrtima s utorima za umetanje blokadnog elementa koji se sastoji od prvog tuljca koji je umetnut između navedena druga dva pločasta elementa i prikladan je za postizanje čvrstog prianjanja (pritiskanja), za vrijeme blokiranja, jednog od navedenih drugih pločastih elemenata s jednim odgovarajućim od prvih pločastih elemenata u zajedničkom djelovanju s drugim vanjskim tuljcem koji je dostupan korisniku za aktiviranje i koji je izveden s navojnim provrtom koji se spaja na drugo navojni zglobni svornjak koji je umetnut tako da se može okretati u navedeni prvi tuljac. The stated objectives as well as others, which will become clear from the following text, are achieved by an adjustable holder for the backs of chairs or the like, of the type consisting of a lower console that is fixed to the seat of the chair, and which is shaped and connected by means of elastic return elements to the back a support, wherein said support is characterized by the fact that the first two plate elements continue from the end of said support which is placed in the direction towards the lower console and are made with coaxial holes into which the first joint bolt is inserted, wherein said bolt is also inserted into corresponding holes made in the said console, which is inserted between them, and the other two plate elements continue from the said console and are inserted between the said first two plate elements, and made with coaxial holes with slots for inserting the blocking element consisting of of the first collar which is inserted between said other two plate elements and is suitable for achieving a solid og adhesion (pressing), during blocking, of one of the mentioned second plate elements with a corresponding one of the first plate elements in joint action with another external sleeve which is accessible to the user for activation and which is made with a threaded hole that connects to the second threaded joint a bolt which is rotatably inserted into said first sleeve.

Daljnje karakteristike i prednosti predmetnog izuma će postati jasne iz daljnjeg detaljnog opisa jedne njegove izvedbe, što je ilustrirano samo u svrhu neograničavajućeg primjera pomoću priloženih crteža, na kojima: Further characteristics and advantages of the subject invention will become clear from the further detailed description of one of its embodiments, which is illustrated only for the purpose of non-limiting example by means of the attached drawings, in which:

Slika 1 daje pogled u perspektivi na držač u skladu s predmetnim izumom; Figure 1 is a perspective view of a holder in accordance with the present invention;

Slika 2 je prikaz u rastavljenom stanju držača sa slike 1; Figure 2 is an exploded view of the holder from Figure 1;

Slika 3 je bokocrt držača sa slike 1. Figure 3 is a side view of the holder from Figure 1.

Uz poseban osvrt na Slike 1 do 3, podesivi držač stolaca ili sličnog, u skladu s predmetnim izumom, je kao cjelina označen referentnim brojem 10. With special reference to Figures 1 to 3, the adjustable chair holder or similar, in accordance with the subject invention, is designated as a whole with the reference number 10.

Detaljnije, držač 10 se sastoji od donje konzole 11 koja se učvršćuje na sjedalo stolca (prikazano shematski i označeno referentnim brojem 11a) i od nosača 12 za držanje naslona (prikazan shematski i označen referentnim brojem 12a). In more detail, the holder 10 consists of a lower console 11 which is fixed to the seat of the chair (shown schematically and marked with reference number 11a) and of a support 12 for holding the backrest (shown schematically and marked with reference number 12a).

Prva dva paralelna kutna pločasta elementa 17 nastavljaju od kraja vertikalnog nosača 12 koji je postavljen u smjeru prema donjoj konzoli 11 i izvedeni su s koaksijalnim provrtima 14 u koje se umeće prvi zglobni svornjak 15; navedeni svornjak se također umeće u odgovarajuće provrte 16 koji su izvedeni u konzoli 11. The first two parallel angular plate elements 17 continue from the end of the vertical support 12 which is placed in the direction towards the lower console 11 and are made with coaxial holes 14 into which the first joint bolt 15 is inserted; said bolt is also inserted into the corresponding holes 16 that are made in the console 11.

Druga dva pločasta elementa 17 protežu se od navedene konzole 11, umetnuti su između navedena prva dva kutna pločasta elementa 13 i izvedeni su s koaksijalnim provrtima 18 s utorima, za umetanje blokadnog elementa koji se sastoji od prvog tuljca 19, koji je umetnut između navedenih drugih pločastih elemenata 17 i prikladan je postizanje čvrstog prianjanja (pritiskanja) jednog od navedenih pločastih elemenata s odgovarajućim prvim pločastim elementom 13 u zajedničkom djelovanju s drugim tuljcem 20 koji je dostupan korisniku za aktiviranje. The other two plate elements 17 extend from the said console 11, are inserted between the said first two angular plate elements 13 and are made with coaxial bores 18 with slots, for inserting the blocking element consisting of the first sleeve 19, which is inserted between the said other plate elements 17 and it is suitable to achieve a firm adhesion (pressing) of one of the mentioned plate elements with the corresponding first plate element 13 in joint action with the second piston 20 which is accessible to the user for activation.

Drugi tuljac je izveden s navojnim provrtom, nije prikazan, koji se spaja na drugi navojni zglobni svornjak 21 (koji ima MB metrički navoj) u svrhu postizanja čvrstog prianjanja (blokiranja), a koji je također umetnut tako da se može okretati u navedeni prvi tuljac 19. The second sleeve is made with a threaded bore, not shown, which connects to the second threaded hinge pin 21 (having an MB metric thread) for the purpose of achieving a tight fit (blocking), which is also inserted so as to be able to turn into said first sleeve 19.

Povoljno je da razmak osi prvog zglobnog svornjaka 15 i drugog zglobnog svornjaka 21 bude približno 40 mm. It is advantageous for the distance between the axis of the first hinge pin 15 and the second hinge pin 21 to be approximately 40 mm.

Izvedeni su elastični elementi za povratno gibanje koji se sastoje od spiralne opruge 22. Elastic elements for return motion consisting of a spiral spring 22 have been made.

Drugi zglobni svornjak 21 ima glavu 23 koja je oblikovana tako da ima dva međusobno nasuprotna dijela 24 s ravnim rubom (od kojih je na slikama vidljiv samo jedan) za sprečavanje rotacije; The second hinge pin 21 has a head 23 which is shaped to have two opposite parts 24 with a straight edge (of which only one is visible in the pictures) to prevent rotation;

takva glava 23 dosjeda u komplementarno oblikovan dosjed 25 koji čini jedan od dva provrta 26, koji su izvedeni u odgovarajućim prvim pločastim elementima 13. such a head 23 fits into a complementary shaped abutment 25 which forms one of the two holes 26, which are made in the corresponding first plate elements 13.

Drugi tuljac 20 je spojen na kotačić 27 koji je dostupan korisniku, a njegov kontakt s odgovarajućim prvim pločastim elementom 13 je, u ovom slučaju, preko dvije podložne pločice 28. The second sleeve 20 is connected to a wheel 27 that is accessible to the user, and its contact with the corresponding first plate element 13 is, in this case, via two washers 28.

U ovoj izvedbi, nosač 12 je sastavljene izvedbe i sastoji se od prvog elementa 29 koji ima poprečni presjek U-oblika, u koji se pričvršćuje drugi element 30 s poprečnim završnim dijelom 31 za spajanje na naslon. In this embodiment, the support 12 is of assembled design and consists of a first element 29 having a U-shaped cross-section, into which a second element 30 with a transverse end part 31 for connection to the backrest is attached.

U drugim izvedbama, koje su sofisticiranije u konstruktivnom pogledu, međusobni položaj prvog elementa 29 i drugog elementa 30 se može podešavati. In other designs, which are more sophisticated in terms of construction, the mutual position of the first element 29 and the second element 30 can be adjusted.

U ovoj izvedbi, donja konzola 11 se također sastoji od uzdužnog elementa koji ima poprečni presjek uglavnom U-oblika. In this embodiment, the lower bracket 11 also consists of a longitudinal element having a generally U-shaped cross-section.

U praksi je ustanovljeno da predmetni izum postiže postavljene ciljeve i zadatke. In practice, it has been established that the subject invention achieves the set goals and objectives.

Treba posebno istaknuti da držač prema ovom izumu ima u stvari sposobnost izvanrednog kombiniranja ekstremne elastičnosti u primjeni s mogućnošću pojednostavljivanja konstruktivnih koraka, u pogledu smanjivanja broja komponenti i njegove osnovne konstrukcijske jednostavnosti. It should be particularly emphasized that the holder according to this invention has in fact the ability to combine extreme elasticity in application with the possibility of simplifying the constructive steps, in terms of reducing the number of components and its basic structural simplicity.

Posebna važnost je također dana znatnom razmaku između osi prvog okretnog (zglobnog) svornjaka 15 i drugog zglobnog svornjaka 21., te usvajanju MB navoja (navoj malog koraka) za zglobni svornjak 21. Special importance is also given to the considerable distance between the axes of the first swivel (hinged) bolt 15 and the second hinged bolt 21, and the adoption of MB thread (small pitch thread) for the hinged bolt 21.

Treba isto tako napomenuti da držač u skladu s predmetnim izumom, zbog njegove konstruktivne jednostavnosti, ni na koji način ne gubi na čvrstoći i elastičnosti u primjeni. It should also be noted that the holder according to the present invention, due to its structural simplicity, in no way loses its strength and elasticity in use.

Držač u skladu s predmetnim izumom može u stvari biti lagano prilagođen zahtjevima različitih primjena i različitim tipovima i modelima stolaca. The holder according to the present invention can in fact be easily adapted to the requirements of different applications and to different types and models of chairs.

Također treba napomenuti da držač prema ovom izumu posebno prilagodljiv s estetskog i stilskog gledišta, te se može prikladno ugraditi u kutijaste konstrukcije ili druga rješenja koja omogućavaju njegovo sakrivanje. It should also be noted that the holder according to this invention is particularly adaptable from an aesthetic and stylistic point of view, and can be conveniently incorporated into box structures or other solutions that enable its concealment.

Predmetni izum dozvoljava brojne modifikacije i varijacije koje su sve unutar opsega koncepta ovog izuma. The subject invention permits numerous modifications and variations, all of which are within the scope of the concept of this invention.

Tehnički detalji se mogu zamijeniti drugim tehnički odgovarajućim elementina. Technical details can be replaced by other technically suitable elements.

Materijali i dimenzije mogu biti bilo koji u skladu sa zahtjevima. Materials and dimensions can be any according to requirements.

Claims

1. An adjustable holder for the backs of chairs or the like, consisting of a lower console that is fixed to the seat of the chair, and which is shaped and connected by means of elastic return elements to the rear support, wherein said support is indicated by the fact that the first two plate elements continue from the end of the said support which is directed towards the lower console and are made with coaxial holes into which the first pivot bolt is inserted, wherein the said bolt is also inserted into the corresponding holes made in the said bracket, which is inserted between them., and the other two plate elements continue from the said console and are inserted between the said first two plate elements, and are made with coaxial holes with slots for inserting the blocking element consisting of the first sleeve which is inserted between the said other two plate elements and is suitable for achieving a solid adhesion (pressing), during blocking, of one of the listed other plate elements from Eq a suitable one of the first plate elements in cooperation with a second outer sleeve accessible to the user for actuation and which is made with a threaded bore that connects to the second threaded joint bolt which is inserted so as to be able to turn into said first sleeve.

2. Holder in accordance with Patent Claim 1, characterized in that the second joint bolt has a head which is shaped to form two mutually opposite parts with a flat edge to prevent rotation, and which fits into a complementary shaped abutment determined by one of two additional holes made in corresponding first plate elements.

3. Holder according to Patent Claim 1, characterized in that said second sleeve is connected to the steering wheel.

4. Holder in accordance with Patent Claim 1, characterized in that at least one washer is placed between said second sleeve and the corresponding first plate element.

5. Holder in accordance with Patent Claim 1, characterized in that said elastic return elements are made by means of a spiral spring, the ends of which lie on the first and second joint bolts and push them.

6. Holder according to Patent Claim 1, characterized in that said vertical support is complex and consists of a first element with a U-shaped cross-section into which a second element with a connecting end is fixed.

7. Holder according to Patent Claim 6, characterized in that said first and second elements have a mutually adjustable position.

8. Holder according to Patent Claim 1, characterized in that said console is basically made by means of a longitudinal element having a U-shaped cross-section.

9. Holder in accordance with Patent Claim 1, characterized in that the axis distance between the first and second hinge pin is approximately 40 mm.

10. A holder according to Claim 1, characterized in that the second hinge pin has an MB metric thread.