EP2845519A1 - Step-safe chair guiding device - Google Patents

Abstract

The invention relates to a sure-footed chair guiding device, comprising: an elongate, flat housing to which a cover (2) is removably attached, - Two arranged within the housing, mutually parallel linear guides, a carriage carrying a chair base (11) which is supported and / or guided by the linear guide, wherein the linear guides are arranged mirror-symmetrically to a longitudinal axis of the housing. According to the invention, at least two mutually parallel running channels (4.1, 4.2) for receiving guide elements (7.1, 7.2, 7.3, 7.4, 7.5, 7.6) are arranged on the cover (2). The guide elements (7.1, 7.2, 7.3, 7.4, 7.5, 7.6) may be connected to the chair base (11) or be part of the chair base (11). The travel channels (4.1, 4.2) have a clear width (B), which is below 10 mm.

Description

• ein längliches, flaches Gehäuse, an dem ein Deckel abnehmbar und nicht sichtbar befestigt ist,
• zwei innerhalb des Gehäuses angeordnete, zueinander parallel verlaufende Linearführungen,
• einen eine Stuhlbasis tragenden Schlitten, welcher von der Linearführung getragen und/oder geführt wird,

wobei die Linearführungen spiegelsymmetrisch zu einer Längsachse des Gehäuses angeordnet sind.The invention relates to a sure-footed chair guiding device, comprising:

• an elongate, flat housing to which a lid is detachably and not visibly attached,
• two linear guides arranged parallel to one another within the housing,
• a chair base supporting carriage which is supported and / or guided by the linear guide,

wherein the linear guides are arranged mirror-symmetrically to a longitudinal axis of the housing.

A chair guide device of the type mentioned is inter alia DE 20 2005 005 317 U1 have been disclosed by the applicant. The chair guide device serves to give a chair used on the chair base a translational movement possibility along the linear guide.

Such chair guide devices are mainly used in conference rooms or meeting rooms. They should create a desired, adjustable distance from the conference table and collision-free passages. The chair is moved substantially perpendicular to the conference table, in front of which the chair guide device is arranged. Normally, the chair base or support pillar of the chair is guided along a slot provided on the cover to create a driving channel, which is arranged in the region of a longitudinal axis of the housing. The width of the slot is at least 20 mm and is determined by the type of attachment and power dissipation. However, the introduced on the floor level housing, for example, 22 mm wide drive channel is not compliant with the current building codes regarding requirements for walking areas. According to the guidelines of the Federal Institute for Occupational safety and occupational medicine, the columns in walking areas should not exceed the value of 10 mm to avoid tripping, kinking and miscarriage. Incidentally, this invention takes into account the requirements of barrier-free construction. Due to the narrow travel channels, these chair guide devices are no obstacle to, for example, wheelchair users or persons assigned to crutches in comparison to conventional systems.

It is therefore the task of designing a novel chair guide device of the type mentioned in the preamble, whose construction can take into account the above-mentioned requirements.

• am Deckel wenigstens zwei zueinander parallel verlaufende Fahrkanäle zur Aufnahme von Führungselementen angeordnet sind,
• die Führungselemente mit der Stuhlbasis verbunden oder Teil der Stuhlbasis sind.

This object is achieved by a generic chair guide device in which:

• at least two mutually parallel running channels for receiving guide elements are arranged on the cover,
• the guide elements are connected to the chair base or are part of the chair base.

The guide elements may be present as webs, which are preferably carried out in a piece of material with the chair base.

Another embodiment provides to perform the engaging in the driving channels guide elements as guide bolts or screws. Such guide elements may be, for example, grub screws with hexagon socket, stud with bearing plate, screws with spacer, etc.

Preferably, two mutually parallel driving channels are introduced on the cover, which are arranged mirror-symmetrically to the longitudinal axis of the housing and each having a clear width, which do not exceed the value 10 mm. Preferably, the clear width is at most 6 mm. In this way, the requirement for surefootedness can be met.

However, this width dimension requires the introduction of new technical measures with which the stability of the chair base and thus the chair in rest position and during the reciprocating motion and when sitting down and getting up under the burden of sitting on the chair person can be guaranteed.

Such measures include above all a stable connection of the chair base with the carriage, for example via screw, such as grub screws. The chair base together with the carriage form a module which can change its position relative to the lid after application of a force, in the manner of a trolley.

The advantage here is that the chair base in plan view of a flat side of the carriage has an outline that approximately coincides with an outline of the carriage. This facilitates the use of screw, as said grub screws, which can be screwed in, for example, for fixing the chair base on the slide from the outside obliquely. If the guide bolts or screws are used, they may be located at a periphery of the chair base. Through these technical measures, the stability of the module can be increased. Of course, it is possible to increase the length of the chair base relative to the carriage.

Preferably, U-shaped guide rails and / or carriages are mounted on a bottom of the carriage whose distance from each other corresponds to the linear guides and the center webs - in the assembled state of the chair guide device - each contact with a linear guide.

Due to the fact that the driving channels introduced on the cover are very narrow, it is possible to dispense with covering belts which are customary in the market, located below the cover and protect against the penetration of dirt particles.

Furthermore, the chair guide device can be equipped with at least one housed within the housing direct or indirect drive technology, is effected by the provision of a reset of the module to move the chair after leaving a defined position, eg directly to the conference table. Preferably, but not necessarily, a gas spring is used, which is connected via a damper element, such as pulley, both with the carriage and with a fixed attachment point. As an alternative to a return spring, the rail guide can be mounted on an inclined plane or a tilting plate integrated into the housing. This will be on DE 10 2010 032 265 A1 . EP 2 617 324 A1 . DE 10 2012 100 432 B3 and to the already mentioned script DE 20 2005 005 317 U1 referenced by the applicant. However, the spring and damper elements go beyond the scope of the present invention and are omitted as such in the following description.

Fig. 1

die erfindungsgemäße Stuhlführungsvorrichtung in einem axialem Längsschnitt durch derer Gehäuse;

Fig. 2

die Stuhlführungsvorrichtung in Draufsicht auf das Gehäuse, mit sichtbaren Fahrkanälen;

Fig. 3

die Stuhlführungsvorrichtung gemäß Fig. 2, ohne Deckel, in Draufsicht auf den Schlitten und die Linearführungen;

Fig. 4

einen Schnitt D - D gemäß Fig. 2;

Fig. 5

das in einen Fußboden eingelassene Gehäuse mit angedeuteter Stuhlbasis, in einer Ansicht auf die Schmalseite des Gehäuses;

Fig. 6

eine andere bevorzugte Ausführungsform der Stuhlführungsvorrichtung, in einem Querschnitt;

Fig. 7

eine weitere Ausführungsform der Stuhlführungsvorrichtung in Draufsicht auf das Gehäuse, mit angedeuteten Fahrkanälen;

Fig. 8

einen Schnitt C - C gemäß Fig. 7;

Fig. 9

ein Detail einer Befestigung der Stuhlbasis am Schlitten mittels Schrauben;

Fig. 10

ein Detail einer Befestigung der Stuhlbasis am Schlitten mittels Stehbolzen mit Auflagerteller; und

Fig. 11

ein Detail einer Befestigung der Stuhlbasis am Schlitten mittels Schrauben mit Distanzhülse

Fig. 12

eine alternative Ausführungsform der Führungselemente 7.1 bis 7.6 als Bestandteil einer aus mehreren Elementen bestehenden VerbindungsBaugruppe in einer Zusammenbauzeichnung;

Fig. 13

Die Verbindungsbaugruppe gemäß Fig. 12 in einer Explosionsdarstellung.

The invention will be explained in more detail with reference to the drawing. The figures show in detail:

Fig. 1

the chair guide device according to the invention in an axial longitudinal section through which housing;

Fig. 2

the chair guide device in plan view of the housing, with visible driving channels;

Fig. 3

the chair guide device according to Fig. 2 , without lid, in plan view of the carriage and the linear guides;

Fig. 4

a section D - D according to Fig. 2 ;

Fig. 5

the housed in a floor housing with indicated chair base, in a view on the narrow side of the housing;

Fig. 6

another preferred embodiment of the chair guide device, in a cross section;

Fig. 7

a further embodiment of the chair guide device in plan view of the housing, with indicated driving channels;

Fig. 8

a section C - C according to Fig. 7 ;

Fig. 9

a detail of attachment of the chair base to the carriage by means of screws;

Fig. 10

a detail of attachment of the chair base to the carriage by means of stud bolts with support plate; and

Fig. 11

a detail of a mounting of the chair base on the carriage by means of screws with standoff

Fig. 12

an alternative embodiment of the guide elements 7.1 to 7.6 as part of a multi-element interconnection assembly in an assembly drawing;

Fig. 13

The connection assembly according to Fig. 12 in an exploded view.

In the FIGS. 1 to 3 a chair guide device 100 is shown according to the invention, comprising a flat, rectangular housing 1 with a removable cover 2, a displaceable along a travel path 18 module 17 and two ball bearings, on a bottom 19 (see. Fig. 4 ) of the housing 1 fixed linear guides 3.1.3.2.

On the cover 2, two mirror-symmetrical to a longitudinal axis designated L driving channels 4.1, 4.2 are introduced, the clear width B is 6.0 mm. The driving channels 4.1, 4.2 are at a distance A from each other, which is 125 mm in size and extend along the travel path 18th

The module 17 is composed of a chair base 11 and arranged below the lid 2, plate-shaped carriage 5 together, which are connected via helical guide elements 7.1, 7.2, 7.3, 7.4, 7.5, 7.6 with each other. The guide elements 7.1, 7.2, 7.3, 7.4, 7.5, 7.6 are in openings 20 (see. Fig. 4 ) is placed on the chair base 11.

The carriage 5 is connected on its underside 8 with guide carriage 10.1, 10.2, 10.3, 10.4. About balls these carriages with the linear guides 3.1, 3.2, which are fixed by screws 5 to the housing 1, connected.

In FIGS. 1 and 3 Also shown is a longitudinal axis L of the housing 1 arranged return device 9 in the form of a gas spring, which is coupled to a guided over a pulley 14 pulley 6. The pulley 6 is only with dashed lines in Fig. 3 indicated. Thus, the movement of the module 17 can be braked in a known manner.

As the Fig. 4 shows remains between the chair base 11 and the lid 2, a slight gap 13. Similarly, between the lid 2 and the carriage 5, a second gap 12 is present. The two gaps 12, 13 are about 1 to 2 mm in size and prevent friction on the top and bottom of the lid. 2

The chair base 11 has (in plan view of the housing 1, see. Fig. 2 ) has an outline U1 which essentially corresponds to an outline U2 of a flat side F of the carriage 5 is the same, so that the carriage 5 coincides with the chair base 11. This facilitates the use of helical guide elements 7.1, 7.2, 7.3, 7.4, 7.5, 7.6 at the periphery of the module 17, along the said drive channels 4.1, 4.2. Furthermore, the chair base 11 has an opening 16 for receiving a support column 15 of a chair, not shown.

The Fig. 10 shows only a part of the chair guide device, corresponding to the right side of the Fig. 4 , So with a guide element 7.5, which is composed of a stud 30 with bearing plate 31, a nut 32 and a washer 33. The stud bolt 30 is screwed into a threaded bore 29 introduced on the carriage 5.

According to Fig. 11 come to connect the chair base 11 with the carriage 5 helical guide elements 7.2, 7.5 in the form of Allen screws 34 are used. The predetermined distance between the chair base 11 and the carriage 5 secure spacers 35th

Of the Fig. 6 A further preferred embodiment of the chair guide device (reference numeral 200) according to the invention can be seen, in which the same parts with the same reference numerals, as in the chair guide device 100, are designated. On the bottom 8 of the carriage 5, four carriages 24 are fixed, which have the same U-shaped cross section, such as guide rails 10.1, 10.2 and have the same function. Important in this embodiment is that was dispensed with screw-like guide elements. As guide elements, ribs 25 engaging in the driving channels 4.1, 4.2 are used, which in a piece of material (eg metal or metal alloy, such as aluminum casting, or plastic, such as thermoset, for example polycarbonate of a higher mechanical and chemical resistance) with the solid chair base 11 are executed. The connection of the chair base 11 with the carriage 5 by means of in Fig. 8 shown, obliquely screwed grub screws 36th

The chair base 11 of both embodiments has a frusto-conical shape, wherein the conical surface is curved, in particular concave. The chair base 11 according to FIGS. 6 and 7 has a smooth, uninterrupted surface 26, as the openings 20 (as in Fig. 4 ) are no longer available.

In Fig. 9 a further preferred embodiment is shown in which the webs 25 executed in a piece of material with the chair base 11 by screws; here: Allen screws 34 are interspersed.

The Fig. 5 shows an arrangement of recessed in a floor 23 chair guide device 100 and 200. The housing 1 is embedded in the floor 23 such that a surface 27 of the lid 2 is flush with a tread surface 28 of the floor 23. A height difference is minimal and can be up to 4 mm according to building regulations.

The FIGS. 12 and 13 show an alternative embodiment of the guide elements 7.1 to 7.n, which are referred to below as guide elements 40. The guide elements 40, which comprise a shaft 47 and a head 48, are part of an assembly, which further comprises a suspension element 41 and a retaining plate 42. The suspension element 41 in the exemplary embodiment is a disc spring package. The guide elements 40 further comprise in the lower region a locking pin 44 which is inserted in a perpendicular to the central axis in the shaft 47 of the guide member 40 introduced bore. The locking pin 44 protrudes on both sides of the guide member 40 by 5mm from the shaft 47 of the guide member 40 out. The head 48 of the guide elements 40 has a hexagonal recess.

The support plate 42 is fixedly mounted with screws not shown using the holes 43 on the carriage 5. When using guide elements 40, the carriage 5 has a receiving area compatible with the holding plate 42. This receiving area comprises a blind hole-like depression for later accommodation of the shaft end incl. Latching pin 44 of the guide element 40.

In the mounted state of the chair guide device, a spacer tube is arranged above the holding plate 42, which is supported on the holding plate 42 downwards and carries the chair base 11 upwards. The spacer tube ensures that between the chair leg 11 and cover 2 analogous to the embodiments described above a slight gap 13 and between the cover 2 and slide 5, a likewise small gap 12 is formed.

The holding plate 42 includes a slot 46 which is slightly longer than the locking pin 44, so that it can be performed for mounting or dismounting through the slot 46. Furthermore, the holding plate 42 comprises a 60 ° offset from the slot 46 arranged notch 45 for receiving the locking bolt 44. By turning the guide member 40 by 60 °, the entire unit can be either fixed or loosened. The spring element 40 exerts in the mounted state, a biasing force on the guide member 40 and thus prevents slipping out of the locking bolt 44 from the notch 45. For assembly / disassembly initially acting in the axial direction of the guide member 40 force is introduced by means of which the locking pin 44 from the notch 45 is pushed out. Subsequently, the guide pin can be rotated by 60 ° and then disassembled from the support plate 42 through the slot 46. <U> REFERENCE LIST: </ u> 1 casing 2 Cover (v. 1) 3.1, 3.2 linear guide 4.1, 4.2 driving channel 5 carriage 6 pulley 7.1, 7.2, 7.3, 7.4, 7.5, 7.6 guide element 8th Bottom side (v. 5) 9 retractor 10.1, 10.2 guide rail 11 chair base 12; 13 gap 14 idler pulley 15 support column 16 opening 17 module 18 traverse 19 ground 20 opening 21 center web 22 Ball (v. 3) 23 floor 24 dare 25 Guide element (bridge) 26 surface 27 surface 28 tread 29 threaded hole 30 studs 31 Auflagerteller 32 mother 33 washer 34 Allen screw 35 Stand Off 36 grub screw 40 alternative guide element 7n 41 The suspension pad 42 Retaining plate 43 drilling 44 Indexing plungers 45 notch 46 Long hole 47 shaft 48 head 100; 200 Chair guiding device A distance B clear width (v. 4) C - C longitudinal section D - D cross-section F Flat side (v. 5) L Longitudinal axis (symmetry axis) U1, U2 outline

Claims (12)

A sure-footed chair guiding device (100; 200) comprising: an oblong, flat housing (1) to which a cover (2) is detachably and not visibly attached, - Two within the housing (1) arranged, mutually parallel linear guides (3.1, 3.2), a carriage (5) which carries a chair base (11) and which is carried and / or guided by the linear guide (3.1, 3.2),
wherein the linear guides (3.1, 3.2) are arranged mirror-symmetrically to a longitudinal axis (L) of the housing (1),
characterized in that - at least two mutually parallel running channels (4.1, 4.2) for receiving guide elements (25; 7.1, 7.2, 7.3, 7.4, 7.5, 7.6) are arranged on the cover (2), - The guide elements (25; 7.1, 7.2, 7.3, 7.4, 7.5, 7.6) are connected to the chair base (11) or part of the chair base (11). Chair guide device (200) according to claim 1, characterized in that the guide elements (25) are webs, which are preferably designed in a piece of material with the chair base (11). Chair guide device (100) according to claim 1, characterized in that the guide elements (7.1, 7.2, 7.3, 7.4, 7.5, 7.6) guide bolts or - screws, such as studs with support plate, grub screw with hexagon socket, screw with spacer sleeve or the like. Chair guide device (100; 200) according to any one of the preceding claims, characterized in that the driving channels (4.1, 4.2) mirror-symmetrical to the longitudinal axis (L) of the housing (1). Chair guide device (100; 200) according to one of the preceding claims, characterized in that between the carriage (5) and the lid (2) and between the lid (2) and the chair base (11) in each case a slight gap (12; 13) remains. Chair guide device (100; 200) according to any one of the preceding claims, characterized in that the driving channels (4.1, 4.2) each have a clear width (B), which do not exceed the value of 10 mm. Chair guide device (100; 200) according to claim 6, characterized in that the width (B) is at most 6 mm. Chair guide device (100; 200) according to any one of the preceding claims, characterized in that the driving channels (4.1, 4.2) have a distance (A) from each other, which is between 100 mm and 150 mm, preferably between 115 mm and 135 mm. Chair guide device (100; 200) according to one of the preceding claims, characterized in that the carriage (5) on its underside (8) with U-shaped guide rails (10.1, 10.2) for placement on linear guides (3.1, 3.2) is provided. Chair guide device (100; 200) according to one of the preceding claims, characterized in that the housing (1) is embedded in a base, such as floor (23), such that a surface (27) of the cover (2) is provided with a tread surface (28 ) of the floor (23) is in flight. Chair guide device (100; 200) according to one of the preceding claims, characterized in that the chair base (11) has an outline (U1) which approximately coincides with an outline (U2) of a flat side (F) of the carriage (5). Chair guide device (100; 200) according to any one of the preceding claims, characterized in that within the housing (1) at least one return device (9) is located and the carriage (5) with at least one damper element, such as pulley (6) is coupled.

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