EP3095353A1 - Gas spring device for adjusting the height of a chair, and chair with such a gas spring device - Google Patents
Gas spring device for adjusting the height of a chair, and chair with such a gas spring device Download PDFInfo
- Publication number
- EP3095353A1 EP3095353A1 EP16164036.2A EP16164036A EP3095353A1 EP 3095353 A1 EP3095353 A1 EP 3095353A1 EP 16164036 A EP16164036 A EP 16164036A EP 3095353 A1 EP3095353 A1 EP 3095353A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas spring
- chair
- spring device
- metal
- tubular
- 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
Links
- 239000004020 conductor Substances 0.000 claims abstract description 26
- 229910052751 metal Inorganic materials 0.000 claims description 69
- 239000002184 metal Substances 0.000 claims description 69
- 239000004033 plastic Substances 0.000 claims description 24
- 229920003023 plastic Polymers 0.000 claims description 24
- 125000006850 spacer group Chemical group 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 210000001331 nose Anatomy 0.000 description 7
- 230000003068 static effect Effects 0.000 description 5
- 241000209035 Ilex Species 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910001092 metal group alloy Inorganic materials 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000007600 charging Methods 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000007786 electrostatic charging Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/20—Chairs or stools with vertically-adjustable seats
- A47C3/30—Chairs or stools with vertically-adjustable seats with vertically-acting fluid cylinder
Definitions
- the present invention relates to a gas spring device for adjusting the height of a chair, in particular a high chair, swivel chair or office chair, and a chair with such a gas spring device.
- a gas spring is used, as for example in the DE 296 08 147 U1 is disclosed.
- a chair column has a guide tube attached to a base, which is provided at its upper open end with a guide bush.
- a length-adjustable gas spring is arranged, whose housing is guided displaceably in the guide bush in the direction of a common central longitudinal axis. From the housing down a piston rod is led out, the free end is supported by means of an axial bearing on a bottom of the guide tube and secured thereto by means of a fastener.
- the invention is based on the object of providing a gas spring device for adjusting the height of a chair, which counteracts an electrostatic charging of the chair and a user of the chair.
- this object is achieved by a gas spring device having the features of patent claim 1 and / or by a chair having the features of patent claim 13.
- the gas spring device has the advantage that by means of the first connecting element and the second connecting element made of an electrically conductive material, in particular metal, the guide device and the bearing of an electrically non-conductive or only slightly conductive material bridged and an electric charge via the gas spring device to the chair and can be dissipated via a grounding of the chair, for example, in the ground.
- a static charging of the chair is prevented, so that the chair can also be used for example in work environments in which a static charge of the chair is undesirable, especially in clean room areas, etc.
- a chair is provided with such a height adjustment device.
- the knowledge / idea on which the present invention is based consists of bridging an electrically nonconductive or insufficiently electrically conductive guide of the jacket tube element of the gas spring device and an electrically nonconductive or insufficiently electrically conductive mounting of the intermediate tube element by means of a first and second electrically conductive connecting element, so that an electric charge can be derived from the casing pipe element to the outside on the standpipe element and from there, for example, via a grounding of the chair is passed into the ground.
- the bearing has an upper sliding bearing and a lower sliding bearing, wherein the upper and the lower sliding bearing are in particular made of at least one plastic or have at least one plastic.
- This plastic does not include any additionally electrically conductive plastic, such as high-resistance plastics, in which the plastic an electrically conductive material is added.
- Such slide bearings made of plastic have the advantage that a simple and inexpensive to manufacture.
- the second tubular element has a flange on the outside.
- a spiral spring is arranged between the flange and the lower sliding bearing.
- the second connection element is for example arranged between the flange and the upper end of the coil spring or between the lower end of the coil spring and the lower sliding bearing.
- the second connection element is a metal element, e.g. a metal disk.
- the metal disc has on its outer periphery at least one projection, in particular a nose, which is in the installed state in permanent contact with the third tubular element.
- the projection and in particular the nose lies with the outer edge or outside, e.g. flat or at least linear to the third rohrfömigen contact.
- a compensation ring of an electrically conductive material, in particular metal is arranged between the flange and the upper end of the spiral spring.
- the spiral spring can be prestressed by the compensating ring and furthermore an electrically conductive path can be produced between the second tubular element or intermediate tube element, its flange, the spiral spring and the metal element as a second connecting element.
- a washer is attached to the outer periphery of the second tubular member and forms the flange, the washer in particular of an electrically conductive material such as metal.
- a metal washer has the advantage that it can be very easily attached to the second tubular element made of metal, for example by welding, thereby the second tubular element can be inexpensively provided with the flange.
- the flange can also be formed integrally with the second tubular element.
- the guide means is a one-piece sleeve or a longitudinally divided into at least two shell elements formed sleeve, wherein the shell elements are fastened to each other.
- the one-piece sleeve or at least one shell element of the two-part sleeve has an opening for receiving the first connection element.
- the one-piece or two-part sleeve has ribs, in particular longitudinal ribs, on its outer circumference.
- the opening is preferably arranged between two ribs for receiving the first connecting element.
- the ribs have the advantage that they can additionally support the connecting element laterally.
- the first connecting element is a spring element, wherein the spring element is in particular made of metal.
- the spring element can a sliding contact can be made and, furthermore, a contact with the first and second tubular elements during operation of the gas spring device can be ensured very easily.
- a spacer sleeve is arranged between the upper sliding bearing and the flange.
- the gas spring device can be set with different heights.
- At least one damper element is arranged between the upper slide bearing and the flange or between the spacer sleeve and the flange. In this way, the gas spring device can be additionally attenuated during operation and unwanted noise can be suppressed.
- the first tubular element is a jacket tube element
- the second tubular element is an intermediate tube element
- the third tubular element is a standpipe element.
- the jacket tube element, the intermediate tube element and / or the standpipe element may be made of metal as an electrically conductive material. This has the advantage that these components are electrically conductive, very simple and inexpensive to manufacture and very stable.
- Fig. 1 shows a view of a height adjustable by means of a gas spring device 10 according to the invention chair.
- the one in the example in Fig. 1 can be provided according to the invention but also any other chair with the gas spring device 10 according to the invention for height adjustment, especially office chairs, swivel chairs, etc ..
- the in Fig. 1 shown by the gas spring device 10 according to the invention height-adjustable chair has a seat 2, which may be optionally additionally rotatable.
- the seat 2 may be provided, for example, with a cover with additional metal threads or in the case of a leather cover with additional metal rivets, wherein the metal rivets are electrically conductively connected via at least one strand in a foam padding of the seat 2 with the chair mechanism.
- an additional backrest 3 and optionally not shown armrests are provided.
- the backrest 3 and the armrests can likewise be designed to be electrically conductive, for example, with a cover with metal threads or metal rivets, or the armrests can be made, for example, of metal, etc.
- the highchair 1 has the gas spring device 10.
- the outer shell of the gas spring device 10 is the standpipe element 23, wherein the standpipe element 23 is in particular made of metal.
- This standpipe element 23 has in the in Fig. 1 embodiment shown a conical seat 4, which is pressed into the base 6.
- a secure conductive connection between the gas spring device 10 and the base 6 is produced.
- the base 6 is at its lower end in the in Fig. 1 illustrated embodiment provided with rollers 5. These have, as will be described below, an electrically conductive plastic on the grounding of the chair.
- the base 6 has a plurality of arms 7. At each arm 7, a roller 5 is fixed by means of which the chair 1 can be rolled.
- the chair with the gas spring device 10 according to the invention does not necessarily have to be rollable and, accordingly, may also be non-rollable, depending on the function and intended use.
- a high chair like the one in Fig. 1 shown exemplary high chair 1, a climbing aid or foot receptacle, such as a foot ring 8, for the user.
- the aforementioned office chairs and swivel chairs need no such foot receptacle, as they are intended for normal common working or table heights.
- the gas spring device 10 is designed such that it can dissipate an electrical charge which flows via the chair in turn can be derived in the soil.
- the chair is provided with a grounding.
- FIG. 2 is a view of a gas spring device 10 according to the invention for the height adjustment of a chair, as exemplified in Fig. 1 shown is shown.
- Fig. 3 shows here a longitudinal sectional view of the gas spring device 10 according to the invention Fig. 2 , In the 4 and 5 are each enlarged sections of the sectional view Fig. 3 shown.
- Fig. 6 again shows an exploded view of the gas spring device 10 according to Fig. 3 ,
- the Gasfedervorrides 10 has a gas spring assembly 9, as in the embodiment in Fig. 3 . 4 . 5 and 6 is shown, which is arranged in a jacket tube element 11.
- a rigid-lockable gas spring assembly 9 is installed in the gas spring device 10.
- a rigid-blockable gas spring assembly 9 type 2 can be used, in which the gas chamber of the spring is in the upper region of the gas spring assembly 9.
- a rigid-lockable gas spring assembly 9 of type 3 can be used, in which the gas chamber of the spring is in the lower region of the gas spring assembly 9.
- the jacket tube element 11 is made of metal, for example a metal alloy such as steel, etc., and guided in a first guide tube device 12. Furthermore, the jacket tube element 11 in the in Fig. 2, 3rd . 4, 5 and 6 shown embodiment, in addition to its longitudinal axis 13 rotatably received in the guide tube means 12 for providing a swivel chair or rotating office chair.
- the guide tube device 12 is formed as a sleeve 14, in particular made of plastic, and has at least one opening 15 for receiving at least one spring element 16, in particular metal spring element, on.
- the spring element 16 forms, as will be explained below, a sliding contact.
- the sleeve 14 is received in an intermediate tube element 18. As in the embodiment in Fig. 3 is shown, the sleeve 14 at its upper end on a projection or a flange 17, with which the sleeve 14 rests against the upper end of the intermediate tube element 18. As a result, the sleeve 14 can not accidentally slip too deeply into the intermediate tube element 18.
- the sleeve 14 may be secured to the intermediate tube member 18 by at least one fastener, eg, a grub screw or a pin, etc.
- An embodiment of the sleeve 14 is shown in the following FIGS. 7, 8 and 9 , and an embodiment of the spring element 16 in the following 10 and 11 shown.
- the intermediate tube element 18 is also made of metal, for example of a metal alloy such as steel, etc.
- the sleeve 14 is pressed into the intermediate tube element 18 and then processed the inside of the sleeve 14, for example, dug or rubbed to the sleeve 14 with a predetermined or defined Inner diameter form. After a relaxation of the sleeve 14, this is partially pushed out of the intermediate tube element 18 again to insert the spring element 16 in the associated opening 15 of the sleeve 14. Subsequently, the sleeve 14 is pushed back into the intermediate tube element 18 in its end position.
- the spring element 16 is in this case a Contact, in particular a permanent contact or sliding contact, between the casing tube element 11 made of metal and the intermediate tube element 18 made of metal.
- the intermediate tube member 18 has at its lower end a bottom 19, to which the gas spring assembly 9 is fixed with one end.
- the bottom 19 can, as in the embodiment in Fig. 3 is shown, for example, welded to the inside of the intermediate tube element 18.
- two circumferential grooves may be provided on the inside or the inner circumference of the intermediate tube element 18, in which a respective unillustrated associated locking ring or snap ring is inserted. Between the two circlips or snap rings while the soil is used.
- the bottom 19 in the in Fig. 3 shown embodiment an opening 20 through which the end of the gas spring assembly 9 is guided.
- the end of the gas spring assembly 9 is fastened via a lock washer 21 and a washer 22 arranged between the gas spring arrangement 9 and the lock washer 21.
- bottom 19 may also have an opening with a thread into which the end of the gas spring assembly 9 is screwed to secure it to the bottom 19. But it can also be provided any other type of attachment which is suitable to attach the gas spring assembly to the bottom of the intermediate tube element.
- the intermediate pipe element 18 is mounted in a standpipe member 23 made of metal.
- the standpipe element 23 has a guide for the intermediate pipe element 18.
- an upper and a lower sliding bearing 24, 25 are provided.
- the two plain bearings 24, 25 are made for example of plastic.
- the upper sliding bearing 24 may, as in the in Fig. 3 and 4 shown embodiment, an additional projection or flange 26, with which it rests against the upper end of the standpipe member 23.
- the upper slide bearing 24 by at least one fastening means, such as a grub screw or a pin, in particular high-tension pin 27, attached to the standpipe member 23, as in the embodiment in Fig. 3 . 4 and 6 is shown.
- the lower sliding bearing 25 in turn rests on a bottom 28 of the standpipe element 23.
- the bottom 28 may be attached to the standpipe member 23 as a separate part, for example, be welded to the standpipe member 23 as in the embodiment in Fig. 3 is shown.
- any other type of attachment of the floor 28 to the standpipe element 23 may be provided.
- the floor can be formed integrally with the standpipe element 23.
- an optional spacer sleeve 29 made of plastic below the upper slide bearing 24 is provided.
- This spacer sleeve 29 serves to set or limit the extension height of the gas spring device 10.
- the spacer sleeve 29 may also be omitted, for example if a maximum possible extension height of the gas spring device to be provided.
- a wider upper sliding bearing 24 can be used instead of the spacer sleeve 29, a wider upper sliding bearing 24 can be used.
- This washer 30 serves, together with the intermediate tube element 18 to which it is attached, to compress a coil spring 31, which is arranged on the outside of the intermediate tube element 18 between the upper and lower slide bearings 24, 25, in the unloaded case of the chair.
- the washer 30 attached to the intermediate pipe element 18 has the task of further extending the loading forces on the spiral spring 31, which is further compressed.
- the intermediate pipe element 18 with the gas spring arrangement 9 installed therein moves downwards.
- the coil spring 31 is made of metal.
- the intermediate pipe element 18 can be optionally additionally greased on its outside in the region of the spiral spring 31. In this case, a preferably continuous and as uniform as possible, not shown fat layer on the outside of the intermediate tube element 18 may be provided.
- between the spacer sleeve 29 and the washer 30 further comprises an optional damping element 32, for example, a rubber damper disc arranged.
- This balancing ring 33 is made of metal, for example aluminum, an aluminum alloy or steel or another electrically conductive material, and serves to bias the coil spring 18 against the lower sliding bearing 25 and a metal element 34 arranged on the lower sliding bearing 25.
- the compensation ring 33 preferably has a smaller outer diameter than the inner diameter of the standpipe element 23. The same applies to the washer 30 and the damping element 32, in order to avoid rubbing against the inside of the standpipe element 23.
- the spacer sleeve 29 does not move. It is for example pressed into the standpipe element 23.
- the balancing ring 33 further causes the coil spring 18 to be permanently in contact with the balancing ring 33 made of metal and the metal element 34.
- the balancing ring 33 is further in subsequent ones FIGS. 12 and 13 shown.
- the metal element 34 is in the embodiment in the Fig. 3 . 5 and 6 formed as a metal disc 35, which has at least one protruding nose 36 on the outer circumference, as in the following Fig. 14 is shown.
- the metal disk 35 with its at least one nose 36 is designed such that the nose 36 is in contact, in particular permanent contact, with the inside of the standpipe member 23. In this way, a connection, in particular permanent connection, between the casing tube element 11 made of metal and the standpipe member 23 made of metal and the two plain bearings 24, 25 bridged from plastic.
- a static charge of the gas spring device 10 can be discharged from the casing tube member 11 to the outside of the standpipe member 23 and derived from there via the grounding of the chair into the ground.
- the metal element 34 for example the metal disc 35 with at least one lug 36, on the lower sliding bearing 25 and between the coil spring 31 and the lower sliding bearing 25, the metal disc 35 remains stationary during operation of the chair 1 or forms a fixed part. This can be ensured by the metal plate 35, a permanent connection for dissipating electrical energy via the intermediate tube member 18 to the standpipe member 23 without the metal plate 35 is moved when using the chair 1 and operating the gas spring device 10, which otherwise in unwanted noise and friction would result.
- FIGS. 2 and 3 is that before in Fig. 1 shown base 6 greatly simplified and purely schematic with a indicated by dashed line.
- This in Fig. 1 shown base 6 is also formed with a plurality of arms 7, wherein, for example, rollers are attached to the arms to roll the chair.
- the base which is formed by the standpipe element 23 is made of an electrically conductive material, in particular metal.
- the rollers provided on the arms of the base cross 6 are eg made of an additionally electrically conductive plastic or high-resistance plastic.
- a grounding of the chair 1 and a discharge of electrical energy via the gas spring device 10 the base 6 and its roles in the ground, so that an electric charge of the chair 1 can be effectively prevented.
- Fig. 7 a view of the sleeve 14 is shown.
- Fig. 8 again represents a longitudinal section AA and Fig. 9 a cross section BB of the sleeve 14 according to Fig. 7 In the in the FIGS. 7, 8 and 9
- the sleeve 14 has longitudinal ribs 37 on its outer circumference. Between two of the longitudinal ribs 37, the at least one opening 15 is provided, in which the associated spring element, not shown, can be used to provide a contact, in particular sliding contact, between the jacket tube element and the intermediate tube element.
- the spring element when it is inserted into the opening 15, additionally stabilized or held laterally and accidental slipping out of the opening 15 or dislocation of the spring element in the opening 15 can be prevented.
- the sleeve 14 can easily into the intermediate tube element Pressed and temporarily pushed out for insertion of the spring element from the intermediate pipe element in the short term again.
- the sleeve 14 in the in FIGS. 7, 8 and 9 shown embodiment, the optional flange 17 for resting on the intermediate tube element.
- the sleeve 14 is made of plastic, for example. However, the invention is not limited to this particular embodiment of the sleeve 14.
- the sleeve 14 may also be provided with ribs (not shown) extending in the circumferential or transverse direction or may have no ribs and a constant wall thickness.
- the sleeve 14 as a guide tube means additionally or alternatively may be formed in two parts in the longitudinal direction and two shell elements or half-shell elements which are fastened to each other.
- the two shell elements have in a region of their upper and lower end on the inside in each case a recess, for example a groove which, when the shell elements are fastened together, forms a circumferential or annular recess.
- a guide ring or plain bearing ring is receivable.
- the guide ring or slide bearing ring is made for example of a sintered material and / or plastic.
- Such guide or sliding bearing rings are sold for example as iglidur ® plastic plain bearings by the company IGUS.
- the two shell elements are in turn made of plastic, for example by injection molding.
- the shell elements may also be formed with ribs on their outer periphery, such as those in FIG FIGS. 7, 8 and 9 shown one-piece sleeve.
- at least one of the shell elements has the at least one opening for receiving an associated spring element.
- Fig. 10 is further a plan view and in Fig. 11 a side view of the spring element 16 is shown.
- the spring element 16 is made of metal as described above.
- the spring element 16 is formed for example as an elongated metal strip which bears resiliently against the intermediate tube element and forms a sliding contact with this.
- the spring element 16 has, for example, a plurality of resilient sections 38, for example three, as in the embodiment in FIG 10 and 11 is shown.
- the invention is not limited to this particular embodiment of a spring element 16.
- Fig. 12 is a plan view of the balance ring 33 and in Fig. 13 a sectional view AA of the balancing ring 33 is shown.
- the compensating collar 33 is disposed below the washer or between the washer and the coil spring.
- the washer is welded to the intermediate pipe element and the weld seam is formed on the side of the balancing ring 33.
- the balance ring 33 is preferably provided with a corresponding recess or bevel 39 on its inner periphery be as in the embodiment in the Fig. 3 . 4 .
- the compensation ring 33 has the advantage that it covers the weld on the flange 26 and the coil spring 31 can rest against the compensation ring 33 over the entire surface.
- Fig. 14 a plan view of the metal element 34 is shown.
- the metal element 34 is in the embodiment in Fig. 14 and previously in the Fig. 3 . 5 and 6 , formed as a metal disc 35, which has one or more projections 36 projecting on the outer periphery.
- the metal disk 35 with their noses 36, as in Fig. 14 is shown, is formed such that the lugs 36 are always in contact with the inside of the standpipe element with built-metal disc 34 in order to provide a connection, in particular permanent connection, with the jacket tube element made of metal.
- the metal disk may also be formed with an outside diameter which corresponds to the inside diameter of the standpipe element in order to provide a permanent contact with the standpipe element.
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- Springs (AREA)
Abstract
Die vorliegende Erfindung betrifft ein Gasfedervorrichtung für einen Stuhl, aufweisend: eine Gasfederanordnung, ein erstes rohrförmiges Element aus einem elektrisch leitfähigen Material, in welchem die Gasfederanordnung aufgenommen ist, ein zweites rohrförmiges Element aus einem elektrisch leitfähigen Material, wobei das zweite rohrförmige Element eine Führungseinrichtung aufweist, in welcher das erste rohrförmige Element aufgenommen ist, wobei die Führungseinrichtung elektrisch nicht leitfähig oder nur geringfügig leitfähig ist; ein drittes rohrförmiges Element aus einem elektrisch leitfähigen Material, welches eine Lagerung, insbesondere aus einem elektrisch nicht leitfähigen oder nur geringfügig leitfähigen Material aufweist, zur Lagerung des zweiten rohrförmigen Elements.The present invention relates to a gas spring device for a chair, comprising: a gas spring assembly, a first tubular member made of an electrically conductive material in which the gas spring assembly is received, a second tubular member made of an electrically conductive material, the second tubular member having a guide means in which the first tubular element is received, wherein the guide device is electrically non-conductive or only slightly conductive; a third tubular element made of an electrically conductive material, which has a bearing, in particular made of an electrically non-conductive or only slightly conductive material for supporting the second tubular element.
Description
Die vorliegende Erfindung betrifft eine Gasfedervorrichtung zur Einstellung der Höhe eines Stuhls, insbesondere eines Hochstuhls, Drehstuhls oder Büro-Stuhls, und einen Stuhl mit einer solchen Gasfedervorrichtung.The present invention relates to a gas spring device for adjusting the height of a chair, in particular a high chair, swivel chair or office chair, and a chair with such a gas spring device.
Bei höhenverstellbaren Stühlen wird bisher eine Gasfeder eingesetzt, wie sie beispielsweise in der
Bei Gasfedern zur Höhenverstellung von Stühlen tritt hierbei das Problem auf, dass ein Stuhl und damit ein Benutzer des Stuhls elektrostatisch insbesondere aufgrund von Reibungselektrizität aufgeladen werden kann. Dem entsprechend kann ein solcher höhenverstellbarer Stuhl nur in solchen Bereichen eingesetzt werden, in welchen eine elektrostatische Aufladung durch den Stuhl die Tätigkeit eines Benutzers des Stuhls nicht beeinträchtigt. Für Bereiche, wie beispielsweise Reinraumarbeitsbereiche usw., ist ein derartiger elektrostatisch aufladbarer Stuhl jedoch nicht geeignet.In the case of gas springs for height adjustment of chairs, the problem arises here that a chair and thus a user of the chair can be electrostatically charged, in particular due to static electricity. Accordingly, such a height-adjustable chair can be used only in those areas in which an electrostatic charge through the chair does not affect the activity of a user of the chair. For areas, like For example, clean room work areas, etc., however, such an electrostatic chargeable chair is not suitable.
Dies ist ein Zustand, den es zu verbessern gilt.This is a condition to be improved.
Vor diesem Hintergrund liegt der Erfindung nun die Aufgabe zugrunde, eine Gasfedervorrichtung zur Einstellung der Höhe eines Stuhls bereitzustellen, welche einer elektrostatischen Aufladung des Stuhls und eines Benutzers des Stuhls entgegenwirkt.Against this background, the invention is based on the object of providing a gas spring device for adjusting the height of a chair, which counteracts an electrostatic charging of the chair and a user of the chair.
Erfindungsgemäß wird diese Aufgabe durch eine Gasfedervorrichtung mit den Merkmalen des Patentanspruchs 1 und/oder durch einen Stuhl mit den Merkmalen des Patentanspruches 13 gelöst.According to the invention, this object is achieved by a gas spring device having the features of
Demgemäß ist vorgesehen:
- Gasfedervorrichtung für einen Stuhl, insbesondere einen Drehstuhl, einen Büro-Stuhl oder einen Hochstuhl, aufweisend:
- eine Gasfederanordnung,
- ein erstes rohrförmiges Element aus einem elektrisch leitfähigen Material, in welchem die Gasfederanordnung aufgenommen ist,
- ein zweites rohrförmiges Element aus einem elektrisch leitfähigen Material, wobei das zweite rohrförmige Element eine Führungseinrichtung aufweist, in welcher das erste rohrförmige Element aufgenommen ist, wobei die Führungseinrichtung elektrisch nicht leitfähig oder nur geringfügig leitfähig ist;
- ein drittes rohrförmiges Element aus einem elektrisch leitfähigen Material, welches eine Lagerung, insbesondere aus einem elektrisch nicht leitfähigen oder nur geringfügig leitfähigen Material aufweist, zur Lagerung des zweiten rohrförmigen Elements,
- wobei die Führungseinrichtung derart mit wenigstens einem ersten Verbindungselement aus einem elektrisch leitfähigen Material versehen ist, dass das erste Verbindungselement in Kontakt mit dem ersten rohrförmigen Element und mit dem zweiten rohrförmigen Element ist, und
- wobei ein zweites Verbindungselement aus einem elektrisch leitfähigen Material zwischen dem zweiten rohrförmigen Element und dem dritten rohrförmigen Element derart vorgesehen ist, die Lagerung zu überbrücken und eine elektrisch leitfähige Verbindung zwischen dem zweiten rohrförmigen Element und dem dritten rohrförmigen Element bereitzustellen.
- Gas spring device for a chair, in particular a swivel chair, an office chair or a high chair, comprising:
- a gas spring arrangement,
- a first tubular element made of an electrically conductive material, in which the gas spring arrangement is accommodated,
- a second tubular member made of an electrically conductive material, the second tubular member having a guide means in which the first tubular member is received, wherein the guide means is electrically non-conductive or only slightly conductive;
- a third tubular element of an electrically conductive material, which has a bearing, in particular made of an electrically non-conductive or only slightly conductive material, for supporting the second tubular element,
- wherein the guide means is provided with at least a first connecting element made of an electrically conductive material such that the first connecting element is in contact with the first tubular element and with the second tubular element, and
- wherein a second connecting member of an electrically conductive material is provided between the second tubular member and the third tubular member so as to bridge the bearing and provide an electrically conductive connection between the second tubular member and the third tubular member.
Die Gasfedervorrichtung hat den Vorteil, dass mittels des ersten Verbindungselements und des zweiten Verbindungselements aus einem elektrisch leitfähigen Material, insbesondere Metall, die Führungseinrichtung und die Lagerung aus einem elektrisch nicht leitfähigen oder lediglich geringfügig leitenden Material überbrückt und eine elektrische Ladung über die Gasfedervorrichtung an den Stuhl und über eine Erdung des Stuhls beispielsweise in den Boden abgeführt werden kann. Hierdurch wird ein statisches Aufladen des Stuhls verhindert, so dass der Stuhl auch beispielsweise in Arbeitsumgebungen eingesetzt werden kann, in welchen eine statische Aufladung des Stuhls unerwünscht ist, insbesondere in Reinraumbereichen usw.The gas spring device has the advantage that by means of the first connecting element and the second connecting element made of an electrically conductive material, in particular metal, the guide device and the bearing of an electrically non-conductive or only slightly conductive material bridged and an electric charge via the gas spring device to the chair and can be dissipated via a grounding of the chair, for example, in the ground. As a result, a static charging of the chair is prevented, so that the chair can also be used for example in work environments in which a static charge of the chair is undesirable, especially in clean room areas, etc.
Des Weiteren wird ein Stuhl mit einer solchen Höhenverstellungsvorrichtung bereitgestellt.Furthermore, a chair is provided with such a height adjustment device.
Die der vorliegenden Erfindung zugrunde liegende Erkenntnis/Idee besteht darin, eine elektrisch nicht leitfähige oder nicht ausreichend elektrisch leitfähige Führung des Mantelrohrelements der Gasfedervorrichtung sowie eine elektrisch nicht leitfähige oder nicht ausreichend elektrisch leitfähige Lagerung des Zwischenrohrelements mittels eines ersten und zweiten elektrisch leitfähigen Verbindungselements zu überbrücken, so dass eine elektrische Ladung von dem Mantelrohrelement nach außen auf das Standrohrelement abgeleitet werden kann und von dort beispielsweise über eine Erdung des Stuhls in den Boden geleitet wird.The knowledge / idea on which the present invention is based consists of bridging an electrically nonconductive or insufficiently electrically conductive guide of the jacket tube element of the gas spring device and an electrically nonconductive or insufficiently electrically conductive mounting of the intermediate tube element by means of a first and second electrically conductive connecting element, so that an electric charge can be derived from the casing pipe element to the outside on the standpipe element and from there, for example, via a grounding of the chair is passed into the ground.
Vorteilhafte Ausgestaltungen und Weiterbildungen ergeben sich aus den weiteren Unteransprüchen sowie aus der Beschreibung unter Bezugnahme auf die Figuren der Zeichnung.Advantageous embodiments and further developments will become apparent from the other dependent claims and from the description with reference to the figures of the drawing.
In einer Ausführungsform der Erfindung weist die Lagerung ein oberes Gleitlager und ein unteres Gleitlager auf, wobei das obere und das untere Gleitlager insbesondere aus wenigstens einem Kunststoff hergestellt sind oder wenigstens einen Kunststoff aufweisen. Dieser Kunststoff umfasst dabei keinen zusätzlich elektrisch leitfähig ausgebildeten Kunststoff, wie beispielsweise hochohmige Kunststoffe, bei welchen dem Kunststoff ein elektrisch leitfähiges Material hinzugefügt wird. Derartige Gleitlager aus Kunststoff haben den Vorteil, dass ein einfach und preiswert in der Herstellung sind.In one embodiment of the invention, the bearing has an upper sliding bearing and a lower sliding bearing, wherein the upper and the lower sliding bearing are in particular made of at least one plastic or have at least one plastic. This plastic does not include any additionally electrically conductive plastic, such as high-resistance plastics, in which the plastic an electrically conductive material is added. Such slide bearings made of plastic have the advantage that a simple and inexpensive to manufacture.
In einer weiteren Ausführungsform der Erfindung weist das zweite rohrförmige Element einen Flansch auf der Außenseite auf. Zwischen dem Flansch und dem unteren Gleitlager ist dabei z.B. eine Spiralfeder angeordnet. Das zweite Verbindungselement ist beispielweise zwischen dem Flansch und dem oberen Ende der Spiralfeder oder zwischen dem unteren Ende der Spiralfeder und dem unteren Gleitlager angeordnet ist. Die Anordnung des zweiten Verbindungselements zwischen dem unteren Ende der Spiralfeder und dem unteren Gleitlager hat den Vorteil, dass das zweite Verbindungselement im Betrieb des Stuhls und insbesondere bei einer Höhenverstellung des Stuhls nicht mitbewegt wird, so dass keine zusätzliche Reibung verursacht wird.In a further embodiment of the invention, the second tubular element has a flange on the outside. For example, a spiral spring is arranged between the flange and the lower sliding bearing. The second connection element is for example arranged between the flange and the upper end of the coil spring or between the lower end of the coil spring and the lower sliding bearing. The arrangement of the second connecting element between the lower end of the spiral spring and the lower sliding bearing has the advantage that the second connecting element is not moved during operation of the chair and in particular in a height adjustment of the chair, so that no additional friction is caused.
In einer anderen Ausführungsform der Erfindung ist das zweite Verbindungselement ein Metallelement, z.B. eine Metallscheibe. Die Metallscheibe weist an ihrem Außenumfang wenigstens einen Vorsprung, insbesondere eine Nase, auf, welcher in eingebautem Zustand in permanentem Kontakt mit dem dritten rohrförmigen Element ist. Der Vorsprung und insbesondere die Nase liegt dabei mit der Außenkante oder Außenseite z.B. flächig oder zumindest linienförmig an dem dritten rohrfömigen Kontakt an.In another embodiment of the invention, the second connection element is a metal element, e.g. a metal disk. The metal disc has on its outer periphery at least one projection, in particular a nose, which is in the installed state in permanent contact with the third tubular element. The projection and in particular the nose lies with the outer edge or outside, e.g. flat or at least linear to the third rohrfömigen contact.
Gemäß einer Ausführungsform der Erfindung ist zwischen dem Flansch und dem oberen Ende der Spiralfeder ein Ausgleichsring aus einem elektrisch leitfähigen Material, insbesondere Metall, angeordnet. Durch den Ausgleichsring kann dabei die Spiralfeder vorgespannt und des Weiteren ein elektrisch leitfähiger Pfad zwischen dem zweiten rohrförmigen Element bzw. Zwischenrohrelement, dessen Flansch, der Spiralfeder und dem Metallelement als zweitem Verbindungselement hergestellt werden.According to one embodiment of the invention, a compensation ring of an electrically conductive material, in particular metal, is arranged between the flange and the upper end of the spiral spring. In this case, the spiral spring can be prestressed by the compensating ring and furthermore an electrically conductive path can be produced between the second tubular element or intermediate tube element, its flange, the spiral spring and the metal element as a second connecting element.
In einer Ausführungsform der Erfindung ist eine Unterlegscheibe an dem Außenumfang des zweiten rohrförmigen Elements befestigt und bildet den Flansch, wobei die Unterlegscheibe insbesondere aus einem elektrisch leitfähigen Material wie z.B. Metall ist. Eine Unterlegscheibe aus Metall hat den Vorteil, dass sie sehr einfach an dem zweiten rohrförmigen Element aus Metall z.B. durch Schweißen befestigt werden kann, dadurch kann das zweite rohrförmige Element kostengünstig mit dem Flansch versehen werden. Ebenso kann der Flansch aber auch integral mit dem zweiten rohrförmigen Element ausgebildet sein.In one embodiment of the invention, a washer is attached to the outer periphery of the second tubular member and forms the flange, the washer in particular of an electrically conductive material such as metal. A metal washer has the advantage that it can be very easily attached to the second tubular element made of metal, for example by welding, thereby the second tubular element can be inexpensively provided with the flange. Likewise, however, the flange can also be formed integrally with the second tubular element.
In einer weiteren Ausführungsform der Erfindung ist die Führungseinrichtung eine einteilige Hülse oder eine in Längsrichtung in wenigstens zwei Schalenelemente geteilt ausgebildete Hülse, wobei die Schalenelemente dabei aneinander befestigbar sind. Die einteilige Hülse bzw. wenigstens ein Schalenelement der zweiteiligen Hülse weist eine Öffnung zur Aufnahme des ersten Verbindungselements auf. Auf diese Weise kann sehr einfach die Hülse als Führungseinrichtung überbrückt und das erste Verbindungselement gleichzeitig mit dem ersten rohrförmigen Element und dem zweiten rohrförmigen Element in Kontakt, insbesondere in permanentem Kontakt, sein.In a further embodiment of the invention, the guide means is a one-piece sleeve or a longitudinally divided into at least two shell elements formed sleeve, wherein the shell elements are fastened to each other. The one-piece sleeve or at least one shell element of the two-part sleeve has an opening for receiving the first connection element. In this way, the sleeve can easily be bridged as a guide device and the first connection element can be in contact with the first tubular element and the second tubular element, in particular in permanent contact.
In einer anderen Ausführungsform der Erfindung weist die einteilige oder zweigeteilte Hülse an ihrem Außenumfang Rippen, insbesondere Längsrippen, auf. Die Öffnung ist dabei vorzugsweise zwischen zwei Rippen angeordnet zur Aufnahme des ersten Verbindungselements. Die Rippen haben dabei den Vorteil, dass sie das Verbindungselement zusätzlich seitlich stützen können.In another embodiment of the invention, the one-piece or two-part sleeve has ribs, in particular longitudinal ribs, on its outer circumference. The opening is preferably arranged between two ribs for receiving the first connecting element. The ribs have the advantage that they can additionally support the connecting element laterally.
In einer Ausführungsform der Erfindung ist das erste Verbindungselement ein Federelement, wobei das Federelement insbesondere aus Metall ist. Durch das Federelement kann ein Schleifkontakt hergestellt werden und des Weiteren ein Anliegen an dem ersten und zweiten rohrförmigen Element im Betrieb der Gasfedervorrichtung sehr einfach sichergestellt werden.In one embodiment of the invention, the first connecting element is a spring element, wherein the spring element is in particular made of metal. By the spring element can a sliding contact can be made and, furthermore, a contact with the first and second tubular elements during operation of the gas spring device can be ensured very easily.
Gemäß einer Ausführungsform der Erfindung ist zwischen dem oberen Gleitlager und dem Flansch eine Distanzhülse angeordnet. Dadurch kann die Gasfedervorrichtung mit verschiedenen Höhen eingestellt werden.According to one embodiment of the invention, a spacer sleeve is arranged between the upper sliding bearing and the flange. Thereby, the gas spring device can be set with different heights.
In einer weiteren Ausführungsform der Erfindung ist zwischen dem oberen Gleitlager und dem Flansch oder zwischen der Distanzhülse und dem Flansch wenigstens ein Dämpferelement angeordnet. Auf diese Weise kann die Gasfedervorrichtung im Betrieb zusätzlich gedämpft und ungewollte Geräusche unterdrückt werden.In a further embodiment of the invention, at least one damper element is arranged between the upper slide bearing and the flange or between the spacer sleeve and the flange. In this way, the gas spring device can be additionally attenuated during operation and unwanted noise can be suppressed.
In einer anderen Ausführungsform der Erfindung ist das erste rohrförmige Element ein Mantelrohrelement, das zweite rohrförmigen Element ein Zwischenrohrelement und das dritte rohrförmige Element ein Standrohrelement. Dabei können das Mantelrohrelement, das Zwischenrohrelement und/oder das Standrohrelement aus Metall als einem elektrisch leitfähigen Material hergestellt sein. Dies hat den Vorteil, dass diese Bauteile elektrisch leitfähig, sehr einfach und kostengünstig in der Herstellung sowie besonders stabil sind.In another embodiment of the invention, the first tubular element is a jacket tube element, the second tubular element is an intermediate tube element and the third tubular element is a standpipe element. In this case, the jacket tube element, the intermediate tube element and / or the standpipe element may be made of metal as an electrically conductive material. This has the advantage that these components are electrically conductive, very simple and inexpensive to manufacture and very stable.
Die obigen Ausgestaltungen und Weiterbildungen lassen sich, sofern sinnvoll, beliebig miteinander kombinieren. Weitere mögliche Ausgestaltungen, Weiterbildungen und Implementierungen der Erfindung umfassen auch nicht explizit genannte Kombinationen von zuvor oder im Folgenden bezüglich der Ausführungsbeispiele beschriebenen Merkmale der Erfindung. Insbesondere wird dabei der Fachmann auch Einzelaspekte als Verbesserungen oder Ergänzungen zu der jeweiligen Grundform der vorliegenden Erfindung hinzufügen.The above embodiments and developments can, if appropriate, combine with each other as desired. Further possible refinements, developments and implementations of the invention also include combinations, not explicitly mentioned, of features of the invention described above or below with regard to the exemplary embodiments. In particular, the person skilled in the art will also add individual aspects as improvements or additions to the respective basic form of the present invention.
Die vorliegende Erfindung wird nachfolgend anhand der in den schematischen Figuren der Zeichnungen angegebenen Ausführungsbeispiele näher erläutert. Es zeigen dabei:
- Fig. 1
- eine Ansicht eines Stuhls mit einer Gasfedervorrichtung zur Höhenverstellung des Stuhls;
- Fig. 2
- eine Ansicht einer Ausführungsform einer erfindungsgemäßen Gasfedervorrichtung, wie sie bei dem Stuhl in
Fig. 1 zur Höhenverstellung einsetzbar ist; - Fig. 3
- eine Schnittansicht der Gasfedervorrichtung gemäß
Fig. 2 ; - Fig. 4
- ein Ausschnitt C, mit Teilschnittansicht, der Gasfedervorrichtung gemäß
Fig. 3 ; - Fig. 5
- ein Ausschnitt A, mit Teilschnittansicht, der Gasfedervorrichtung gemäß
Fig. 3 ; - Fig. 6
- eine Explosionsdarstellung der Gasfedervorrichtung gemäß
Fig. 3 ; - Fig. 7
- eine Ansicht einer Hülse der Gasfedervorrichtung gemäß
Fig. 3 ; - Fig. 8
- eine Längsschnittansicht der Hülse gemäß
Fig. 7 ; - Fig. 9
- eine Querschnittansicht der Hülse gemäß
Fig. 7 ; - Fig. 10
- eine Draufsicht auf das Federelement der Gasfedervorrichtung gemäß
Fig. 3 ; - Fig. 11
- eine Seitenansicht des Federelements gemäß
Fig. 10 ; - Fig. 12
- eine Draufsicht auf den Ausgleichsring gemäß
Fig. 3 ; - Fig. 13
- eine Schnittansicht A-A des Ausgleichsrings gemäß
Fig. 12 ; und - Fig. 14
- eine Draufsicht eines Scheibenelements der Gasfedervorrichtung gemäß
Fig. 3 .
- Fig. 1
- a view of a chair with a gas spring device for height adjustment of the chair;
- Fig. 2
- a view of an embodiment of a gas spring device according to the invention, as in the chair in
Fig. 1 can be used for height adjustment; - Fig. 3
- a sectional view of the gas spring device according to
Fig. 2 ; - Fig. 4
- a section C, with a partial sectional view of the gas spring device according to
Fig. 3 ; - Fig. 5
- a section A, with a partial sectional view of the gas spring device according to
Fig. 3 ; - Fig. 6
- an exploded view of the gas spring device according to
Fig. 3 ; - Fig. 7
- a view of a sleeve of the gas spring device according to
Fig. 3 ; - Fig. 8
- a longitudinal sectional view of the sleeve according to
Fig. 7 ; - Fig. 9
- a cross-sectional view of the sleeve according to
Fig. 7 ; - Fig. 10
- a plan view of the spring element of the gas spring device according to
Fig. 3 ; - Fig. 11
- a side view of the spring element according to
Fig. 10 ; - Fig. 12
- a plan view of the balance ring according to
Fig. 3 ; - Fig. 13
- a sectional view AA of the balancing ring according to
Fig. 12 ; and - Fig. 14
- a plan view of a disc member of the gas spring device according to
Fig. 3 ,
Die beiliegenden Zeichnungen sollen ein weiteres Verständnis der Ausführungsformen der Erfindung vermitteln. Sie veranschaulichen Ausführungsformen und dienen im Zusammenhang mit der Beschreibung der Erklärung von Prinzipien und Konzepten der Erfindung. Andere Ausführungsformen und viele der genannten Vorteile ergeben sich im Hinblick auf die Zeichnungen. Die Elemente der Zeichnungen sind nicht notwendigerweise maßstabsgetreu zueinander gezeigt.The accompanying drawings are intended to provide further understanding of the embodiments of the invention. They illustrate embodiments and, together with the description, serve to explain principles and concepts of the invention. Other embodiments and many of the stated advantages will become apparent with reference to the drawings. The elements of the drawings are not necessarily shown to scale to each other.
In den Figuren der Zeichnung sind gleiche, funktionsgleiche und gleich wirkende Elemente, Merkmale und Komponenten - sofern nichts anderes ausführt ist - jeweils mit denselben Bezugszeichen versehen.In the figures of the drawing are the same, functionally identical and same-acting elements, features and components - unless otherwise stated - each provided with the same reference numerals.
Der in
Wie in dem Ausführungsbeispiel in
Der in
Um zu verhindern, dass der Stuhl und ein Benutzer des Stuhls elektrostatisch aufgeladen werden können, ist die Gasfedervorrichtung 10 derart ausgebildet ist, dass sie eine elektrische Ladung abführen kann, die über den Stuhl wiederum in den Boden abgeleitet werden kann. Der Stuhl ist dazu mit einer Erdung versehen.In order to prevent the chair and a user of the chair from being able to be charged electrostatically, the
In
Die Gasfedervorrrichtung 10 weist eine Gasfederanordnung 9 auf, wie in dem Ausführungsbeispiel in
Das Mantelrohrelement 11 ist aus Metall, beispielsweise einer Metalllegierung wie Stahl usw., und in einer ersten Führungsrohreinrichtung 12 geführt. Des Weiteren ist das Mantelrohrelement 11 in dem in
Die Führungsrohreinrichtung 12 ist als Hülse 14, insbesondere aus Kunststoff, ausgebildet und weist wenigstens eine Öffnung 15 zur Aufnahme wenigstens eines Federelements 16, insbesondere Metall-Federelements, auf. Das Federelement 16 bildet, wie im Nachfolgenden noch erläutert wird, einen Schleifkontakt. Die Hülse 14 ist dabei in einem Zwischenrohrelement 18 aufgenommen. Wie in dem Ausführungsbeispiel in
Das Zwischenrohrelement 18 ist ebenfalls aus Metall, beispielsweise aus einer Metalllegierung wie Stahl usw.. Hierbei wird die Hülse 14 in das Zwischenrohrelement 18 eingepresst und anschließend die Innenseite der Hülse 14 bearbeitet, z.B. ausgehont oder ausgerieben, um die Hülse 14 mit einem vorbestimmten oder definierten Innendurchmesser auszubilden. Nach einer Relaxation der Hülse 14, wird diese aus dem Zwischenrohrelement 18 wieder teilweise herausgeschoben, um das Federelement 16 in die zugeordnete Öffnung 15 der Hülse 14 einzusetzen. Anschließend wird die Hülse 14 zurück in das Zwischenrohrelement 18 in ihre Endposition geschoben. Mittels des Federelements 16 wird hierbei ein Kontakt, insbesondere ein permanenter Kontakt oder Schleifkontakt, zwischen dem Mantelrohrelement 11 aus Metall und dem Zwischenrohrelement 18 aus Metall bereitgestellt.The
Das Zwischenrohrelement 18 weist an seinem unteren Ende einen Boden 19 auf, an welchem die Gasfederanordnung 9 mit einem Ende befestigt ist. Der Boden 19 kann dabei, wie in dem Ausführungsbeispiel in
Zur Befestigung der Gasfederanordnung 9 weist der Boden 19 in dem in
In einer alternativen nicht dargestellten Ausführungsform kann Boden 19 auch eine Öffnung mit einem Gewinde aufweisen, in welches das Ende der Gasfederanordnung 9 eingeschraubt wird, um diese an dem Boden 19 zu befestigen. Es kann aber auch jede andere Art der Befestigung vorgesehen werden die geeignet ist die Gasfederanordnung an dem Boden des Zwischenrohrelements zu befestigen.In an alternative embodiment, not shown, bottom 19 may also have an opening with a thread into which the end of the
Wie in der Schnittansicht in
Des Weiteren ist in dem in
An der Außenseite des Zwischenrohrelements 18 ist unterhalb des oberen Gleitlagers 24 eine Unterlegscheibe 30, z.B. aus Metall, befestigt, beispielsweise angeschweißt, wie in dem Ausführungsbeispiel in
In dem in
Unterhalb der Unterlegscheibe 30 oder zwischen der Unterlegscheibe 30 und der Spiralfeder 31 ist außerdem in dem in
Das Metallelement 34 ist in dem Ausführungsbeispiel in den
In den
Des Weiteren sind die an den Armen des Fußkreuzes 6 vorgesehenen Rollen z.B. aus einem zusätzlich elektrisch leitfähig ausgebildeten Kunststoff oder hochohmigen Kunststoff. Auf diese Weise erfolgt eine Erdung des Stuhls 1 und eine Ableitung von elektrischer Energie über die Gasfedervorrichtung 10, dem Fußkreuz 6 und seine Rollen in den Boden, so dass eine elektrische Aufladung des Stuhls 1 wirksame verhindert werden kann.
In
In
Durch das Vorsehen der Öffnung 15 zwischen zwei Rippen 37, wie in
In einer alternativen, nicht dargestellten Ausführungsform kann die Hülse 14 als Führungsrohreinrichtung zusätzlich oder alternativ auch in Längsrichtung zweigeteilt ausgebildet sein und zwei Schalenelemente oder Halbschalenelemente aufweisen, welche aneinander befestigbar sind. Die beiden Schalenelemente weisen in einem Bereich ihres oberen und unteren Endes auf der Innenseite jeweils eine Aussparung, beispielsweise eine Nut auf, die, wenn die Schalenelemente aneinander befestigt sind, eine umlaufende oder ringförmige Aussparung bildet. In die umlaufende oder ringförmige Aussparung, beispielsweise eine umlaufende Nut, ist ein Führungsring oder Gleitlagerring aufnehmbar. Der Führungsring oder Gleitlagerring ist dabei beispielsweise aus einem Sintermaterial und/oder Kunststoff hergestellt. Derartige Führungs- oder Gleitlagerringe werden beispielsweise als iglidur® Kunststoff-Gleitlager von der Firma IGUS vertrieben. Die beiden Schalenelemente sind wiederum z.B. aus Kunststoff hergestellt, beispielsweise im Spritzgussverfahren. Die Schalenelemente können ebenfalls mit Rippen an ihrem Außenumfang ausgebildet sein, wie die in
In
In
Des Weiteren ist in
Obwohl die vorliegende Erfindung vorstehend anhand der bevorzugten Ausführungsbeispiele beschrieben wurde, ist sie darauf nicht beschränkt, sondern auf vielfältige Art und Weise modifizierbar. Insbesondere sind die zuvor beschriebenen Ausführungsformen und Ausführungsbeispiele miteinander kombinierbar, insbesondere einzelne Merkmale davon.Although the present invention has been described above with reference to the preferred embodiments, it is not limited thereto, but modified in many ways. In particular, the embodiments and exemplary embodiments described above can be combined with one another, in particular individual features thereof.
- 11
- Hochstuhlhigh chair
- 22
- SitzSeat
- 33
- Rückenlehnebackrest
- 44
- konischer Sitzconical seat
- 55
- Rollerole
- 66
- Fußkreuzfootbase
- 77
- Armpoor
- 88th
- Fußringanklet
- 99
- GasfederanordnungA gas spring assembly
- 1010
- GasfedervorrichtungGas spring means
- 1111
- MantelrohrelementCasing element
- 1212
- Führungseinrichtungguide means
- 1313
- Längsachselongitudinal axis
- 1414
- Hülseshell
- 1515
- Öffnungopening
- 1616
- Federelementspring element
- 1717
- Flansch (Hülse)Flange (sleeve)
- 1818
- ZwischenrohrelementIntermediate pipe element
- 1919
- Bodenground
- 2020
- Öffnungopening
- 2121
- Sicherungsscheibelock washer
- 2222
- Unterlegscheibewasher
- 2323
- StandrohrelementStandpipe element
- 2424
- oberes GleitlagerUpper plain bearing
- 2525
- unteres Gleitlagerlower plain bearing
- 2626
- Flanschflange
- 2727
- HochspannstiftHigh tension pin
- 2828
- Boden (Standrohrelement)Floor (standpipe element)
- 2929
- DistanzhülseStand Off
- 3030
- Unterlegscheibewasher
- 3131
- Spiralfederspiral spring
- 3232
- Dämpferelementdamper element
- 3333
- Ausgleichsringcompensation ring
- 3434
- Metallelementmetal element
- 3535
- Metallscheibemetal disc
- 3636
- Nasenose
- 3737
- Längsrippelongitudinal rib
- 3838
- federnder Abschnittresilient section
- 3939
- Abschrägungbevel
Claims (15)
dadurch gekennzeichnet,
dass die Lagerung ein oberes Gleitlager (24) und ein unteres Gleitlager (25) aufweist, wobei das obere und das untere Gleitlager (24, 25) insbesondere aus wenigstens einem Kunststoff hergestellt sind oder wenigstens einen Kunststoff aufweisen.Gas spring device according to claim 1,
characterized,
that the bearing has an upper bearing (24) and a lower bearing (25), said upper and lower bearings (24, 25) are in particular made of at least a plastic material or have at least one plastic.
dadurch gekennzeichnet,
dass das zweite rohrförmige Element (18) einen Flansch (26) auf der Außenseite aufweist, wobei zwischen dem Flansch (26) und dem unteren Gleitlager (25) eine Spiralfeder (31) angeordnet ist, und wobei das zweite Verbindungselement (34, 35, 36) zwischen dem Flansch (26) und dem oberen Ende der Spiralfeder (31) oder zwischen dem unteren Ende der Spiralfeder (31) und dem unteren Gleitlager (25) angeordnet ist.Gas spring device according to one of the preceding claims,
characterized,
in that the second tubular element (18) has a flange (26) on the outside, wherein a spiral spring (31) is arranged between the flange (26) and the lower sliding bearing (25), and wherein the second connecting element (34, 35, 36) between the flange (26) and the upper end of the coil spring (31) or between the lower end of the coil spring (31) and the lower sliding bearing (25) is arranged.
dadurch gekennzeichnet,
dass das zweite Verbindungselement ein Metallelement (34) und insbesondere eine Metallscheibe (35) ist, wobei die Metallscheibe (35) an ihrem Außenumfang wenigstens einen Vorsprung, insbesondere eine Nase (36), aufweist, welcher in eingebautem Zustand in permanentem Kontakt mit dem dritten rohrförmigen Element (23) ist.Gas spring device according to one of the preceding claims,
characterized,
that the second connecting element is a metal element (34) and in particular a metal disc (35), wherein the metal disc (35) on its outer circumference at least one projection, in particular a nose (36) has, which in the installed state in permanent contact with the third tubular element (23).
dadurch gekennzeichnet,
dass zwischen dem Flansch (26) und dem oberen Ende der Spiralfeder (31) ein Ausgleichsring (33) aus einem elektrisch leitfähigen Material, insbesondere Metall, angeordnet ist.Gas spring device according to one of the preceding claims,
characterized,
in that between the flange (26) and the upper end of the spiral spring (31) a compensation ring (33) made of an electrically conductive material, in particular metal, is arranged.
dadurch gekennzeichnet,
dass eine Unterlegscheibe (30) an dem Außenumfang des zweiten rohrförmigen Elements (18) befestigt ist und den Flansch (26) bildet, wobei die Unterlegscheibe (30) insbesondere aus Metall ist.Gas spring device according to one of the preceding claims,
characterized,
in that a washer (30) is fixed to the outer circumference of the second tubular element (18) and forms the flange (26), the washer (30) being made of metal in particular.
dadurch gekennzeichnet,
dass die Führungseinrichtung (12) eine einteilige Hülse (14) oder eine in Längsrichtung in wenigstens zwei Schalenelemente geteilt ausgebildete Hülse ist, wobei die Schalenelemente aneinander befestigbar sind, und wobei die Hülse (14) bzw. wenigstens ein Schalenelement der Hülse eine Öffnung (15) zur Aufnahme des ersten Verbindungselements (16) aufweist.Gas spring device according to one of claims 3 to 7,
characterized,
that the guide device (12) is a one-piece sleeve (14) or a split longitudinally into at least two shell elements formed sleeve, wherein the shell elements are fastened to one another, and wherein said sleeve (14) and at least one shell element of the sleeve has an opening (15 ) for receiving the first connecting element (16).
dadurch gekennzeichnet,
dass die Hülse (14) an ihrem Außenumfang Rippen, insbesondere Längsrippen (37), aufweist und die Öffnung (15) vorzugsweise zwischen zwei Rippen (37) angeordnet ist zur Aufnahme des ersten Verbindungselements (16).Gas spring device according to claim 7,
characterized,
that the sleeve (14) has on its outer periphery ribs, in particular the longitudinal ribs (37) and the opening (15) is preferably arranged between two ribs (37) for receiving the first connecting element (16).
dadurch gekennzeichnet,
dass das erste Verbindungselement ein Federelement (16) ist, wobei das Federelement (16) insbesondere aus Metall ist.Gas spring device according to one of the preceding claims,
characterized,
that the first connecting element is a spring element (16), wherein the spring element (16) is in particular made of metal.
dadurch gekennzeichnet, dass die zwischen dem oberen Gleitlager (24) und dem Flansch (26) eine Distanzhülse (29) angeordnet ist.Gas spring device according to one of claims 2 to 9,
characterized, in that a spacer sleeve (29) is arranged between the upper sliding bearing (24) and the flange (26).
dadurch gekennzeichnet,
dass die zwischen dem oberen Gleitlager (24) und dem Flansch (26) oder zwischen der Distanzhülse (29) und dem Flansch (26) wenigstens ein Dämpferelement (32) angeordnet ist.Gas spring device according to one of claims 2 to 10,
characterized,
in that the at least one damper element (32) is arranged between the upper slide bearing (24) and the flange (26) or between the spacer sleeve (29) and the flange (26).
dadurch gekennzeichnet,
dass das erste rohrförmige Element ein Mantelrohrelement (11), das zweite rohrförmigen Element ein Zwischenrohrelement (18) und das dritte rohrförmige Element ein Standrohrelement (23) ist, wobei das Mantelrohrelement (11), das Zwischenrohrelement (18) und/oder das Standrohrelement (23) aus Metall als einem elektrisch leitfähigen Material sind.Gas spring device according to one of the preceding claims,
characterized,
in that the first tubular element is a jacket tube element (11), the second tubular element is an intermediate tube element (18) and the third tubular element is a standpipe element (23), wherein the jacket tube element (11), the intermediate tube element (18) and / or the standpipe element ( 23) are of metal as an electrically conductive material.
dadurch gekennzeichnet,
dass der Stuhl (1) eine elektrische Erdung aufweist.Chair according to claim 13,
characterized,
that the chair (1) having an electrical ground.
dadurch gekennzeichnet,
dass der Stuhl ein Fußkreuz (6) aufweist, wobei das Fußkreuz (6) elektrisch leitend mit dem dritten rohrförmigen Element (23) der Gasfedervorrichtung (10) gekoppelt ist und wobei der Stuhl (1) vorzugsweise Rollen (5) aus einem hochohmigen Kunststoff aufweist.Chair according to one of claims 13 or 14,
characterized,
in that the chair has a base (6), wherein the base (6) is electrically conductive with the third tubular Element (23) of the gas spring device (10) is coupled and wherein the chair (1) preferably rollers (5) made of a high-resistance plastic.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015209465.0A DE102015209465A1 (en) | 2015-05-22 | 2015-05-22 | Gas spring device for height adjustment of a chair and chair with such a gas spring device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3095353A1 true EP3095353A1 (en) | 2016-11-23 |
EP3095353B1 EP3095353B1 (en) | 2019-11-06 |
Family
ID=55697105
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16164036.2A Active EP3095353B1 (en) | 2015-05-22 | 2016-04-06 | Gas spring device for adjusting the height of a chair, and chair with such a gas spring device |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3095353B1 (en) |
DE (1) | DE102015209465A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4025607A1 (en) * | 1990-08-13 | 1992-05-27 | Stabilus Gmbh | Electrically conducting shock absorber pedestal for office chair - is provided with electrically conducting seat carrier with seat surface and base cross fixed at chair column mounted rotatable with support body |
DE29608147U1 (en) | 1996-05-04 | 1996-08-01 | Suspa Compart Ag, 90518 Altdorf | Chair gas spring |
DE10340725A1 (en) * | 2003-06-30 | 2005-03-17 | Möbelwerk Ilse GmbH & Co KG | Lifting device for tables and chairs has telescopic columns and control device to control fixing device for locking outer tube of first column relative to surrounding tube |
EP2868230A1 (en) * | 2013-11-05 | 2015-05-06 | Sedus Stoll AG | Height adjustment device and chair with such a height adjustment device |
-
2015
- 2015-05-22 DE DE102015209465.0A patent/DE102015209465A1/en not_active Withdrawn
-
2016
- 2016-04-06 EP EP16164036.2A patent/EP3095353B1/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4025607A1 (en) * | 1990-08-13 | 1992-05-27 | Stabilus Gmbh | Electrically conducting shock absorber pedestal for office chair - is provided with electrically conducting seat carrier with seat surface and base cross fixed at chair column mounted rotatable with support body |
DE29608147U1 (en) | 1996-05-04 | 1996-08-01 | Suspa Compart Ag, 90518 Altdorf | Chair gas spring |
DE10340725A1 (en) * | 2003-06-30 | 2005-03-17 | Möbelwerk Ilse GmbH & Co KG | Lifting device for tables and chairs has telescopic columns and control device to control fixing device for locking outer tube of first column relative to surrounding tube |
EP2868230A1 (en) * | 2013-11-05 | 2015-05-06 | Sedus Stoll AG | Height adjustment device and chair with such a height adjustment device |
Also Published As
Publication number | Publication date |
---|---|
DE102015209465A1 (en) | 2016-11-24 |
EP3095353B1 (en) | 2019-11-06 |
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