WO2019038419A1 - Chaise avec un élément de libération - Google Patents

Chaise avec un élément de libération Download PDF

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Publication number
WO2019038419A1
WO2019038419A1 PCT/EP2018/072874 EP2018072874W WO2019038419A1 WO 2019038419 A1 WO2019038419 A1 WO 2019038419A1 EP 2018072874 W EP2018072874 W EP 2018072874W WO 2019038419 A1 WO2019038419 A1 WO 2019038419A1
Authority
WO
WIPO (PCT)
Prior art keywords
chair
locking
blocking
bowden cable
roller
Prior art date
Application number
PCT/EP2018/072874
Other languages
German (de)
English (en)
Inventor
Martin Ballendat
Original Assignee
Design Ballendat Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Design Ballendat Gmbh filed Critical Design Ballendat Gmbh
Priority to EP18765375.3A priority Critical patent/EP3672451B1/fr
Publication of WO2019038419A1 publication Critical patent/WO2019038419A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C9/00—Stools for specified purposes
    • A47C9/02—Office stools not provided for in main groups A47C1/00, A47C3/00 or A47C7/00; Workshop stools
    • A47C9/025—Stools for standing or leaning against, e.g. in a semi-standing or half-seated position
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03255—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest with a central column, e.g. rocking office chairs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/002—Chair or stool bases
    • A47C7/004—Chair or stool bases for chairs or stools with central column, e.g. office chairs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/002—Chair or stool bases
    • A47C7/006—Chair or stool bases with castors

Definitions

  • the invention relates to a chair with a release element.
  • a chair which comprises a support frame, a support unit, which is arranged on the support frame and a seat element and a backrest element, which are each supported by the support unit.
  • This known chair can either be designed as a seat on which a user takes a seat sitting or be designed as a standing chair, which is a
  • rollers are particularly advantageous in the quick and easy movement of a chair designed as a chair.
  • a piece of furniture and in particular for a chair comprises a roller body, which is connectable to the piece of furniture or the chair and at least one roller, which is rotatably mounted on a roller axis on the roller body.
  • the invention has for its object to provide a chair of the aforementioned type, which avoids accidental slipping or rolling away.
  • a chair comprising a support frame, a support unit, which is arranged on the support frame, and a seat element and a backrest element.
  • the seat element and the backrest element are each supported by the support unit.
  • the chair also comprises a first release element, which is arranged between the support unit and the seat element. At least one Bowden cable of at least one functional element engages on the release element.
  • the release element is also adjustable between a rest position, in which it does not act on the at least one Bowden cable, and an activation position, in which it acts on the at least one Bowden cable and thus activates the functional element.
  • the release element is by means of a release element clamping means in his
  • the release element is designed such that the adjustment takes place from its rest position into its activation position by means of weight of an object acting on the release element.
  • the chair according to the invention is thus designed such that, for example, the placement of an object with a corresponding weight or the placement of a user on the seat element activate the functional element.
  • the chair is thus moved from a passive position, in which its position can not be changed or only with a large force application, in an active position in which its position is easily changed, which can be done for example by moving or rolling the chair.
  • the object whose weight force can act on the release element may, for example, be a human, an animal or an object.
  • the chair is thus in its passive position. For example, if a user sits down on the seat element, his weight force activates the release element, which acts on the functional element by means of the at least one Bowden cable and activates it.
  • the functional element can be any element of the chair which avoids, directly or indirectly, an unwanted slipping or rolling away.
  • the first release element is a folding element which pivots about a folding element axis. bar is.
  • Such an element can be formed in a simple manner with low height.
  • a lever can be created, which allows actuation of the folding element even at low weight.
  • the support frame comprises a center column, wherein the center pillar is also conceivable as a telescopic center column, which has a rotation and at least one outer sleeve and an inner sleeve.
  • a center column is known, for example, in swivel chairs and leaves as a telescopic center column a height adjustment of the support unit relative to the support frame.
  • the anti-rotation device serves to prevent the rotation of the two sleeves against each other.
  • a center column serves the stability of the chair, since it forms a central element on which the support unit can be arranged and on which chair legs can be arranged.
  • the Bowden cable on a loop portion, which is preferably arranged in the telescope center column.
  • the Bowden cable is at least so long that the chair is adjustable in height without affecting the function of the release element or the Bowden cable.
  • the loop namely the function of the Bowden cable is independent of the Ausfahrzugstand the Teleskopstoffchule or the height of the seat element.
  • it also comprises a second release element, which is arranged below the seat element. At least one Bowden cable engages at least one functional element on the second release element.
  • the second release element is adjustable between a rest position, in which it does not act on the at least one Bowden cable, and an activation position, in which it acts on the at least one Bowden cable and thus activates the functional element.
  • the second release element is also biased by means of a release element clamping means in its rest position, wherein the second release element is designed such that the adjustment takes place from its rest position to its activation position by means of an adjusting force.
  • a release element for example, a release lever is conceivable, which one or more functional elements can activate / activate acti, which may be the same / the same or other functional element / functional elements, which / which can be activated by means of the first release element / are.
  • the traction force which a user can apply by means of a hand or foot operation can serve as adjusting force.
  • the chair in a further preferred embodiment, it comprises a third release element, which is arranged on the backrest element and on which at least one Bowden cable of at least one functional element engages.
  • the third release element is adjustable between a rest position, in which it does not act on the at least one Bowden cable, and an activation position, in which it acts on the at least one Bowden cable and thus activates the functional element.
  • the third release element is biased by means of a release element clamping means in its rest position, wherein the third release element is designed such that the adjustment takes place from its rest position to its activation position by means of an adjusting force.
  • the third release element may for example be a release button, via which corresponding functional elements can be activated. This may be the same / the same or other functional element / functional elements which can be activated by means of the first release element and / or the second release element.
  • As an adjusting force for example, serve the pressure force that can apply a user by means of manual operation.
  • the chair can be designed as such according to one of claims 11 to 21, that is to say in particular comprise at least one roller element which serves as a functional element.
  • the chair according to the invention may be designed as such according to one of claims 22 to 25, ie in particular one
  • Arretierfuß which serves as a functional element.
  • the chair according to the invention may be designed as such according to one of claims 26 or 27, thus in particular comprising a senatorlehnenblockiervomchtung serving as a functional element.
  • the chair may be after Invention may be designed as such according to one of claims 28 to 42, so in particular comprise a rotation lock arrangement, which serves as a functional element.
  • a chair comprising a support frame, a support unit which is arranged on the support frame, a seat element and a backrest element, which are each supported by the support unit, and serving as a functional element roller element.
  • Each roller element comprises a roller body, which is connectable to the chair, and at least one roller, which is rotatably mounted on a roller axis on the roller body.
  • the roller element comprises a locking device, which is adjustable between a freewheeling position, in which a freewheel of the at least one roller is possible, and a locking position, in which the at least one roller is locked.
  • the roller element also comprises a first Bowden cable, which acts on the locking device to selectively adjust this on actuation of the first Bowden cable from its locking position in their free-standing.
  • the essential advantage of the roller element according to the invention is in particular that it is adjustable by means of a Bowden cable between its freewheeling position and its locking position.
  • a chair can be provided with at least one such roller element. If necessary, the chair is thus easily rollable or has sufficient stability, which reliably prevents unintentional slipping or rolling away of the chair.
  • the advantage of the first Bowden cable is that the adjustment of the roller element can be triggered on a relative to the roller element remote location on the chair, which can lead to easy operation of the chair.
  • the locking device can act like an electronic parking brake, which is adjustable only between a complete locking or blocking and a complete freewheel and thus has only two positions and no intermediate active position.
  • the locking device is thus not in this case the delay of rollers in the sense of a deceleration brake.
  • the chair has a release element or is designed as a chair according to one of claims 1 to 10, the first Bowden cable can run between the release element and the locking device of the roller element. In its passive position thus at least one roller element of the chair is locked. The chair is therefore secured against accidental slipping or rolling. Pushing the chair is only possible against the frictional force acting between the rollers and the ground.
  • the first release element for example, is adjusted from its rest position to its activation position by the weight force acting on it.
  • the release element in turn acts on the first Bowden cable and adjusts the locking device from its locked position into its freewheeling position.
  • the chair can be rolled with roller elements in a simple manner.
  • the locking device further comprises a locking toothing, which is arranged on the roller, and a locking pawl, which is arranged on the roller body and is adjustable between the freewheeling position and the locking position.
  • the at least one roller is locked in that at least one locking element of the locking pawl engages in the locking toothing.
  • a latch clamping means is provided, which biases the locking pawl in its locking position.
  • the first Bowden cable engages the locking pawl to selectively adjust the locking pawl upon actuation of the first Bowden cable from its locking position to its freewheeling position.
  • Such a construction is used to permanently secure a passive position of the chair and that significantly by the interaction of the locking teeth and the at least one locking element.
  • the first Bowden cable is guided out of the chair into the roller body in such a way that it is penetrated by a roller body axis through which the roller body can be rotated relative to the chair.
  • a roller element is formed, which is based on the
  • the locking pawl is pivotally mounted on the roller body via a locking pawl axis.
  • the pivoting or rotational movement of the locking pawl serves for easy adjustability between its freewheeling position and its locking position.
  • the locking pawl on an arc-like outer surface, whose geometric center is located on the roller axis.
  • a locking pawl is provided, which corresponds at least in sections with a radius of the roller.
  • a large contact surface between the locking pawl and the locking toothing can be formed.
  • a large number of locking elements can be formed, whereby a multiple and very secure engagement of
  • Locking elements in the locking teeth is possible.
  • locking elements acting on the chair thrust force for rotation of the roller is evenly distributed to the locking elements, which acts on each locking element only a small force.
  • the locking device can be formed gently.
  • the locking element is formed in the locking pawl. It is conceivable that the at least one locking element is formed as a recess within the Arretierklinken stressess and sets the locking pawl for producing the locking position on the Arretierveriereung. In other words, the locking toothing engages in the locking pawl. As a result, a small and space-saving locking pawl can be formed.
  • the pawl clamping means acts in relation to the roller axis radial direction. This allows the pawl clamping means to be supported in the central portion of the reel body, resulting in an advantageous distribution of forces acting within the reel body.
  • the pawl clamping means between the roller axis and the locking pawl is arranged.
  • a compact roller element can be formed, since the latch clamping means can be supported on the relative to the at least one roller immovable roller body.
  • the pawl clamping means is a compression spring.
  • a compression spring is to be understood each resilient element which biases the locking pawl in its locking position.
  • the compression spring can therefore be designed, for example, as a helical spring or as a leaf spring.
  • the locking toothing has open ArretienciesEnglishept in the direction of the roller axis.
  • the ArretiuntersEnglishept engage the locking elements.
  • the shape of the locking recesses corresponds to the shape of the locking elements.
  • the ArretichtsEnglishept can be arranged at regular intervals based on the roller axis and thereby form the Arretierverzahnung, so that in each position of the ArretierausEnglishept to the at least one locking element a fastest possible intervention can take place.
  • a chair comprising a support frame, a support unit which is arranged on the support frame, and a seat element and a backrest element, which are each supported by the support unit.
  • the chair comprises a locking foot serving as a functional element, comprising a locking body which can be connected to the chair and is height-adjustable between a raised release position and a lowered locking position.
  • the locking body is biased by a predominantlyspannstoffs in its locking position.
  • the Arretierfuß includes a second Bowden cable which engages the Arretierfuß to selectively adjust the locking body upon actuation of the second Bowden cable from its locking position to its release position.
  • the Arretierfuß is thus adjusted in height for braking the chair or for fixing a position of the chair in its lowered locking position.
  • the Arretierfuß additionally or alternatively to the at least one roller element act on the chair.
  • the advantage of the second Bowden cable is that the adjustment of the Arretierfußes can be triggered at a relative to the Arretierfußes far away place on the chair, which can lead to easy operation of the chair.
  • the locking foot on a guide slot, in which engages firmly connected to the chair guide pin.
  • the locking body between its release position and its locking position about a vertical Arretierfußachse is rotatable. By such a rotational movement tilting or jamming of the locking body is avoided and formed a durable Arretierfuß.
  • the Arretierfuß on its bottom side surface at least partially on a locking pad.
  • a locking lining essentially serves to form a high frictional force between the chair and the floor under the chair. The greater a frictional force when moving the chair in its passive position or when lowered locking position of the Arretierfußes, the heavier the chair is displaced.
  • a chair comprising a support frame, a support unit which is arranged on the support frame, and a seat element and a backrest element, which are each supported by the support unit.
  • the chair further comprises a backrest blocking device serving as a functional element, which is a blocking tongue which is adjustable between a retracted pivot position in which a backrest element is pivotable relative to a support unit, and an issued blocking position in which a pivoting of the backrest element relative to the support unit is blocked.
  • the blocking tongue is biased by a blocking device clamping means in blocking position, wherein a third Bowden cable is provided which engages the blocking tongue to selectively adjust the blocking tongue upon actuation of the third Bowden cable from its blocking position to its pivoting position.
  • the backrest blocking device may be provided alternatively or in addition to the roller element and / or the Arretierfuß.
  • Backrest blocking device is used in particular for releasing and blocking the pivoting movement of the backrest element.
  • the chair comprises a release element
  • a pivoting of the backrest element is only possible when, for example, a user sits down on the seat element or places an object with a corresponding weight on it.
  • at least the first release element is activated, which adjusts the blocking tongue from its blocking position into its pivoting position via the third Bowden cable.
  • the adjustment can also take place, for example, by means of the second or third release element.
  • Such an embodiment is particularly advantageous when a combined seating and standing chair is to be formed, in which a backrest should be adjustable when used as a seat and locked in use as a stool.
  • a backrest blocking device could not serve as a seat portion for the buttocks of a user.
  • a user can namely be supported on a seat portion of the backrest element or lean against it, without thereby displacing the backrest element.
  • the advantage of the third Bowden cable is that the adjustment of the istlehnernblockiervortechnische can be triggered at a relative to the scholarlehenblockiervortechnische far away place on the chair, which can lead to an easy operation of the chair.
  • the securing of the blocking position can be improved by increasing the contact area between the blocking tongue and the legislative arm.
  • the blocking tongue blocks the pivoting movement of the backrest element in that it engages in the corresponding pivoting region.
  • a chair comprising a support frame, a support unit, which is arranged on the support frame, and a seat member and a backrest element, which are each supported by the support unit.
  • the chair further comprises a rotational locking arrangement serving as a functional element which is adjustable between a blocking position in which rotation of the chair and / or the carrying unit of the chair is blocked about a vertical chair axis, and a rotational position in which rotation of the chair and / or the carrying unit of the chair is released around the vertical chair axis.
  • the rotation lock arrangement comprises an adjusting means, which serves for adjusting the rotation lock arrangement, a rotation blocking means, which is displaceable by the adjusting means between a rest position in which it puts the rotation lock arrangement in its blocking position, and an activation position, in which it sets the rotation lock arrangement in its rotational position.
  • the rotation lock arrangement comprises a fourth bow pull, which acts on the adjustment means in order to selectively adjust the rotation lock arrangement upon actuation of the fourth Bowden cable from its blocking position into its rotational position.
  • the rotation lock arrangement additionally or alternatively to the at least one roller element, the Arretierfuß and / or the formulatelehnenblockiervorides act on the chair.
  • the advantage of the fourth Bowden cable is that the adjustment of the rotational locking arrangement can be triggered at a location with respect to the rotation lock arrangement far away on the chair, which can lead to an easy operation of the chair.
  • the rotation lock arrangement is a blocking ring arrangement which is arranged below a seat element.
  • a blocking ring assembly can be easily integrated into a chair leg construction and / or center column construction without having to make significant changes to the dimensions of the chair.
  • a blocking ring arrangement is flat executable, whereby little space is taken.
  • the adjusting means is a lifting ring, which is rotatably mounted about the vertical chair axis between a rest position and an activation position.
  • Embodiment the fourth Bowden cable attack in a constructive manner on the cam and this put on actuation in a rotary motion.
  • the lifting ring comprises at least one lifting ramp for adjusting the rotational locking means.
  • the cam ring can thus advantageously serve as a means for transmitting its own rotational movement in an at least partially translational movement.
  • the anti-rotation means is a blocking ring, which is mounted displaceably along the vertical chair axis between a rest position and an activation position.
  • the blocking ring can be raised and lowered between its two positions.
  • the blocking ring comprises a blocking toothing, in which at least one blocking element can engage in the rest position of the blocking ring.
  • the rotation lock arrangement also comprises a coupling ring, which is displaceably mounted along the vertical chair axis between a rest position and an activation position and disposed between the adjusting means and the anti-rotation means.
  • the coupling ring may, for example, carry the anti-rotation means and / or be rotatably connected thereto.
  • the coupling ring comprises at least one voltage applied to the lifting ramp.
  • a tooth is used to transmit the rotational movement of the adjusting or lifting ring in a translational movement of the coupling ring and thus optionally also of the rotational locking means and the blocking ring.
  • the lifting tooth can abut, for example, in the rest position of the anti-rotation means or of the blocking ring at the lower end of the lifting ramp and rest in the activation position of the rotation locking means or of the blocking ring at the upper end of the lifting ramp.
  • the rotation lock arrangement also comprises a central element, which is rotatably mounted about the vertical chair axis between a rest position and an activation position and at least one blocking tooth engaging selectively in the blocking toothing.
  • a central element can serve to transmit a blocking effect and release effect to other elements of the chair.
  • a center column of the chair is rotatably mounted on the central element.
  • the rotation lock arrangement also comprises a fifth Bowden cable, which runs between the anti-rotation means and a roller member to the Rollen- element between a freewheeling position, in which a freewheel at least one
  • roller of the roller element is possible, and a locking position is adjustable, in which the at least one roller is locked.
  • the rotation lock arrangement can be activated by means of a release element, which in turn serves as another release element to activate the at least one roller element.
  • the first release element indirectly also acts on the at least one roller element.
  • the fifth Bowden cable runs between the anti-rotation means or blocking ring and the corresponding roller element.
  • the chair comprises five such roller elements and five fifth Bowden cables to ensure a secure state of the chair.
  • the adjusting means is biased by means of at least one clamping means in its rest position.
  • a tensioning means can serve any resilient element which biases the adjustment means in its rest position.
  • the tensioning means can therefore be designed, for example, as a helical spring or as a leaf spring.
  • the anti-rotation means is biased by means of at least one clamping means in its rest position.
  • each resilient element which biases the adjustment means in its rest position.
  • the tensioning means can therefore be designed, for example, as a helical spring or as a leaf spring.
  • the rotation lock arrangement further comprises a bearing ring, which is preferably arranged between the rotation-locking means and the central element.
  • a bearing ring reduces the friction of adjacent elements and leads due to easy adjustability to a high-quality overall impression of the chair.
  • the rotational locking arrangement is formed such that its height in the blocking position and in the rotational position is the same. In other words, during the adjustment of the rotational locking arrangement between the blocking position and the rotational position, the overall height thereof does not change. Thus, the outer dimensions of the rotation lock arrangement remain unchanged regardless of the respective position.
  • Embodiments of a roller element according to the invention and a chair according to the invention are shown schematically simplified in the drawing and are explained in more detail in the following description. It shows:
  • Figure 1 is a side view of a chair according to the invention with a
  • Figure 2 is a side view of the chair of Figure 1 with a folding element in
  • Figure 3 is a side view of the chair of Figure 2 with a height-adjusted
  • Figure 4 is a detail view of a support unit of the chair of Figure 1;
  • FIG. 5 is a detail view of the support unit of the chair according to Figure 2;
  • Figure 6 is a schematic view of the chair of Figure 1;
  • Figure 7 is a schematic view of the chair of Figure 2;
  • Figure 8 is a detail view of a roller element according to the invention in the locking position
  • FIG. 9 shows a detailed view of the roller element according to FIG. 6 in freewheeling position
  • Figure 10 is a detail view of a Arretierfußes in the release position
  • Figure 11 is a detail view of the Arretierfußes in the locked position
  • Figure 12 is a perspective view of a blocking ring assembly
  • FIG. 13 shows an exploded view of the blocking ring arrangement according to FIG. 12;
  • FIG. 14 shows a detailed view of the blocking ring arrangement according to FIG. 12;
  • Figure 15 is a detail view of a cam ring and a central element in the blocking position;
  • Figure 16 is a detail view of the cam ring and the central element of Figure 15 in the rotational position
  • Figure 17 is a detail view of the cam ring and a coupling ring in the blocking position
  • Figure 18 is a detail view of the cam ring and the coupling ring of Figure 17 in the rotational position;
  • Figure 19 is a detail view of the cam ring, the coupling ring and a blocking ring in the blocking position;
  • FIG. 20 shows a detailed view of the cam ring, the coupling ring and the blocking ring according to FIG. 19 in the rotational position
  • Figure 21 is a detail view of the locking ring and the central element in the blocking position
  • FIG. 22 shows a detailed view of the blocking ring and the central element according to FIG. 22
  • FIG. 23 shows a detail view of the blocking ring arrangement and of the roller element in blocking position
  • FIG. 24 shows a detailed view of the blocking ring arrangement and of the roller element according to FIG. 23 in the rotational position.
  • a chair 1 is completely depicted in a side view.
  • the chair 1 comprises a support frame 2 and a support unit 4 arranged on the support frame 2.
  • the chair 1 also comprises a seat element 6 and a backrest element 8, which are each supported by the support unit 4.
  • Between the support unit 4 and the seat member 6 designed as a folding element 10 first release element is arranged.
  • the folding element 10 comprises an upper part 11 on which the Seat element 6 is arranged and a lower part 12, which is supported on the support unit 4.
  • the upper part 11 is pivotable relative to the lower part 12 via a folding element axis 13.
  • the support frame 2 comprises a centrally arranged center column, which is designed as a telescope center column 14.
  • the support unit 4 is supported on the telescopic center column 14 and is rotatable relative to this about a vertical chair axis 3.
  • the telescopic center pillar 14 comprises an inner sleeve 15 and an outer sleeve 16.
  • the inner sleeve 15 comprises securing slots 17, two of which are shown. In each securing slot 17 engages a arranged on the outer sleeve 16 and not shown locking pin, whereby an anti-rotation 18 is formed. In other words, the two sleeves 15, 16 are not rotated against each other about the vertical chair axis 3.
  • the support frame 2 also includes a plurality of chair legs 20, of which only two pieces are shown. Preferably, five chair legs 20 may be provided. With their upper end, the chair legs 20 are each attached to the center pillar 14. At its bottom end, a chair leg 20 has a roller element 30 and a chair leg 20 has a roller element 31.
  • the roller elements 30, 31 differ in that the roller element 30 is a lockable roller element and the roller element 31 is a non-lockable roller element known from practice.
  • the chair legs 20 also carry an annular footrest 22.
  • a backrest arm 24 is pivoted about a backrest axis 26.
  • the backrest arm 24 carries the backrest element 8.
  • the backrest element 8 has a backrest section 8a, which is aligned in the direction of the front of the chair.
  • the backrest element on a seat portion 8b which is aligned in Guatemalarochraum.
  • the backrest portion 8a serves to abut a user's back, if this sits on the seat member 6 and applies his back to the backrest portion 8a. In such a sitting on the chair 1 of this is used as a seat.
  • the seat portion 8b is configured such that a user can stand upright thereon. In such use of the chair 1, this is used as a standing chair.
  • the force acting on the seat portion 8b weight G is advantageously over the arranged directly underneath backrest arm 24 in the support unit 4.
  • the folding element 10 is adjustable from the rest position shown in Figure 1 in the activation position shown in Figure 2.
  • a ground-directed force G, for example, by the weight of a user sitting on the seat member 6, are registered in the chair 1 or by a corresponding object 28 with a sufficient weight.
  • Figures 4 and 5 show the support unit 4 and the folding element 10 in his
  • Figures 4 and 5 Resting position and in its activation position, with Figures 4 and 5 are shown in a wireframe view. In this wireframe view, only the peripheral lines of the individual elements are shown and area not visualized.
  • a compression spring 32 serving as a release element chip means is arranged between the upper part 11 and the lower part 12.
  • the compression spring 32 biases the folding element 10 in its rest position.
  • a first Bowden cable 34 is attached on the upper part 11.
  • the first Bowden cable 34 is part of the roller element 30 serving as a functional element, as FIGS. 6 to 9 show.
  • a third Bowden cable 36 is arranged, which is part of serving as a functional element backrest locking device 50.
  • an arm 44 of the upper part 11 engages. The arm 44 displaces an outer sleeve of the third Bowden cable 36 in an adjustment of the folding element 10 in its activation position.
  • a second Bowden cable 35 which may be arranged like the first Bowden cable 34 or the third Bowden cable 36, is shown in FIGS. 10 and 11 and forms part of a locking foot 70 serving as a functional element.
  • the backrest blocking device 50 comprises a blocking tongue 52 and the third Bowden cable 36.
  • the third Bowden cable 36 extends between the folding element 10 and the blocking tongue 52.
  • the blocking tongue 52 adjustable between a retracted pivoting position shown in Figure 5 and an issued blocking position shown in Figure 4. In the pivoting position, the backrest element 8 or the backrest arm 24 is pivotable relative to the support unit 4 about the backrest axis 26. In blocking position, such pivoting is blocked.
  • a compression spring 40 biases the Bowden cable 36 or the
  • Blocking tongue 52 in blocking position before. In the blocking position shown in FIG. 4, the blocking tongue 52 bears against a contact surface 42 of the backrest arm 24.
  • the folding element 10 is thus between a rest position, in which it does not act on the at least one Bowden cable 34, 35, 36, 37 and an activation position adjustable, in which it acts on the at least one Bowden cable 34, 35, 36, 37 and so on corresponding functional elements activated.
  • the operation of the seat back block device 50 will be described below. If a ground-directed force G is applied to the seat element 6, the upper part 11 is pivoted about the folding element axis 13 in the direction of the lower part 12. As a result, the arm 44 displaces the outer sleeve of the third Bowden cable 36 against the biasing force of the compression spring 40. By such movement, the blocking tongue 52 is moved from its blocking position into its pivot position. In other words, the blocking tongue 52 is not in its release position in a pivoting range of the backrest arm 24. The backrest arm 24 can thus pivot freely about the backrest axis 26.
  • FIGS. 8 and 9 show a grid model view of the support frame 2 and the support unit 4. From these two views it is clear that the first Bowden cable 34 has a loop portion 46 which is arranged in the telescopic center column 14. Namely, the first Bowden cable 34 runs from the upper part 11 through the support unit 4 into the telescopic center pillar 14 of the support frame 2 into a chair leg 20 and finally into the roller element 30.
  • FIGS. 8 and 9 show the roller element 30, which serves as a functional element, is arranged on the bottom-side end of at least one chair leg 20 and can be activated by means of the first Bowden cable 34.
  • the chair 1 may have only a single roller element 30 according to FIGS. 8 and 9 or else a plurality of roller elements 30.
  • Each roller element 30 has a roller body 80 and at least one roller 82. It is conceivable that the roller element 30 has two rollers 82 and is thus designed as a double role.
  • the roller body 80 is connected via a corresponding bearing with the chair leg 20. It is conceivable that the roller element 30 with respect to the chair leg 20 about a roller body axis 84 is rotatable.
  • the first Bowden cable 36 can be guided in such a way from the chair leg 20 in the roller body 80 that it is penetrated by the roller body axis 84.
  • the at least one roller 82 is rotatably mounted on the roller body 80 via a roller axle 86.
  • the roller element 30 has a locking device which has a locking toothing 88, which is arranged on the roller 82 and a locking pawl 90, which is arranged on the roller body 80.
  • the locking device also includes a serving as a latch clamping means compression spring 92 which biases the locking pawl 90 in its locking position.
  • the locking device comprises the first Bowden cable 34, which acts on the locking pawl 90 to selectively actuate the locking pawl 90.
  • the locking pawl 90 is pivotable about a locking pawl axis 94 on the
  • the locking pawl 90 is adjustable between a freewheeling position, in which a freewheeling of the at least one roller 82 is possible, and a locking position in which the at least one roller 82 is locked in that at least one locking element 96 of the locking pawl 90 in the Arretierverzah- tion 88 engages.
  • the locking pawl 90 has a circular arc-like outer surface 96, the geometric center of which lies on the roller axle 86.
  • On the circular arc-like outer surface 96 of the locking pawl 90 three locking elements are formed, which are designed as locking lugs 98.
  • the three locking lugs 98 engage in open locking recesses 100 of the locking toothing 88.
  • the locking recesses 100 are arranged at regular intervals about the roller axle 86.
  • the shape of the locking tabs 98 corresponds to the shape of the Arretierausappel 100, so that a positive connection between the two is guaranteed.
  • the compression spring 92 is disposed between the roller axle 86 and the locking pawl 90 and thus acts in relation to the Laurollenachse 86 radial direction. In the following, the operation of the roller element 30 will be explained. If a floor-facing force is exerted on the seat member 6, and thereby the
  • Folding element 10 is adjusted from its rest position to its activation position, and the first Bowden cable 34 is actuated, which adjusts the locking pawl 90 against the biasing force of the compression spring 92 from the locked position to the freewheeling position.
  • the roller 82 can roll unrestrained by the locking pawl 90.
  • the Arretierveriereung 88 is rotatably connected to the roller 82.
  • the flap member 10 is pivoted by means of the compression spring 32 in its rest position and the latch 90 is pivoted by means of the compression spring 92 in its locked position. If at this time the locking tabs 98 are not aligned with the Arretierausappelungen 100 to a corresponding engagement, so runs at least one locking tab 98 so long with rotating roller 82 on an end face 102 of the Arretierveriereung 88 until the locking tabs 98 are aligned with the Arretierausappel 100 and they lock into it.
  • FIGS. 10 and 11 show a locking foot 70 arranged on the telescopic center pillar 14.
  • the locking foot 70 can likewise serve as a functional element and comprises a locking body 71, which is connected to the chair 1 via the telescopic center pillar 14.
  • the locking body 71 is height-adjustable between a raised release position shown in FIG. 10 and a lowered locking position shown in FIG.
  • the Arretierfuß 70 may be biased by means of a treatingspannstoffs not shown in its locking position.
  • the Arretierfuß 70 includes the second Bowden cable 35, which extends between the locking body 71 and the folding element 10. By means of the second Bowden cable 35 of the locking body 71 is selectively adjustable from its locking position to its release position.
  • the locking foot 70 has a guide slot 72 arranged on the locking body 71, in FIG which engages a fixedly connected to the Teleskopstoffchule 14 guide pin 73.
  • the locking body 71 is rotatable between its release position and its locking position about a vertical Arretierfußachse 74, which is aligned with the vertical chair axis 3.
  • the locking body 71 has on its bottom-side surface at least partially a locking lining 75.
  • FIGS. 12 to 24 show a rotation lock arrangement designed as a blocking ring arrangement 60.
  • the blocking ring arrangement 60 is adjustable between a blocking position shown in FIG. 23, in which a rotation of the chair 1 and / or a carrying unit 4 of the chair 1 about the vertical chair axis 3 is blocked, and a rotational position shown in FIG. 24, in which a rotation of the Chair 1 and / or the support unit 4 of the chair 1 to the vertical chair axis 3 is released.
  • the support frame 2 is defined as a fixed reference point.
  • the blocking ring arrangement 60 is arranged in the bottom area of the chair 1 and integrated into the carrier frame 2.
  • the support frame 2 has five chair legs 20 arranged evenly around the vertical chair axis 3, at the bottom ends of which a roller element 30 is arranged in each case.
  • the blocking ring arrangement 60 is penetrated centrally by the telescopic center column 14. From the folding element 10 not shown in FIGS. 12 to 24, a fourth Bowden cable 37 leads to the blocking ring arrangement 60.
  • FIG. 13 shows an exploded view of the elements of the blocking ring arrangement 60 according to the present embodiment.
  • the blocking ring arrangement 60 is closed on the bottom side by a bottom ring 53 and a seal 54.
  • the bottom ring 53 clamps the seal 54 between itself and the support frame 2.
  • the support frame 2 itself forms a receiving space 55, in which the blocking ring arrangement 60 is arranged.
  • a cam ring 61 which serves as adjusting means
  • a coupling ring 63 which serves as a rotation locking means
  • a bearing ring 69 and a central member 64 which slidably rests on the bearing ring 69 and as the upper closing element and cover serves.
  • the cam ring 61 and the central member 64 are interconnected in a translatory manner.
  • the distance between the bottom ring 53 and the central member 64 defines the height of the locking ring assembly 60, which remains the same regardless of the position of the locking ring assembly 60.
  • Figure 14 shows a detailed view of the blocking ring assembly 60 in mounted
  • FIGS. 15 and 16 essentially show the lifting ring 61 and the central element 64 in the blocking position and in the rotational position. It is clear from FIG. 15 that the fourth Bowden cable 37 is guided through the telescopic center pillar 14 into the receiving space 55. With its folding element 10 opposite end of the fourth Bowden cable 37 engages the cam ring 61.
  • the cam ring 61 is biased by a plurality of Hubringfedern 56, preferably by means of five Hubringfedern 56, which are supported on the central element 64, in the blocking position.
  • the cam ring 61 has an inner lying for each Hubringfeder 56
  • the bulges 57 are arranged at equal intervals around the vertical chair axis 3.
  • the cam ring 61 also has external
  • Indentations 58 which are also arranged at regular intervals around the vertical chair axis 3 and are arranged alternately with respect to the inner bulges 57.
  • the central element 64 guide members 59 a, 59 b.
  • Each guide member 59a engages in a corresponding bulge 57 and each guide member 59b engages in a corresponding recess 58 a.
  • Each guide member 59a, 59b is displaceable within the corresponding recess or recess 57, 58 between a left and a right stop.
  • FIG. 16 now shows the cam ring 61 adjusted from the blocking position into the rotational position. Such an adjustment takes place against the pretensioning force of the camshaft
  • the cam ring 61 is rotated relative to the central element 64 by a defined angular range about the chair axis 3. This angular range is decisively determined by the length of the bulge 57 and recess 58 in each case in the circular arc direction and the guide members 59a, 59b engaging therein or by the corresponding stop of the respective guide member 59a, 59b in the corresponding recess or indentation.
  • the counter-rotating cam ring 61 and the central element 64 are freely rotatable about the vertical chair axis 3. With the central element
  • the 64 may be connected, for example, a chair center column, so that in the rotational position, a rotation of the support unit 4 and the seat member 6 and the back member 8 is made possible around the vertical chair axis 3.
  • Figures 17 and 18 show a detailed view of the cam ring 61 and the coupling ring 63 in a blocking position shown in Figure 17 and a rotational position shown in Figure 18.
  • the coupling ring 63 has on its inside at regular intervals around the chair axis 3 arranged Strozzähne 67 and guide teeth 76, which alternate.
  • the guide teeth 76 shown in FIG. 17 engage in corresponding guide recesses 77 of the central element 64, which are illustrated in FIG.
  • Each lifting tooth 67 rests on a lifting ramp 65 of the lifting ring 61.
  • the translational adjustment height and the shape of movement of the coupling ring 63 are decisively influenced by the lifting ramps 65, the lifting ramps 65 each having a defined, continuous and linear gradient in the present example.
  • the lifting ramps 65 may, for example, each have an at least partially parabolic sliding surface, on which a lifting tooth 67 rests.
  • FIGS. 19 and 20 show, the coupling ring 63 serves as a link between the lifting ring 61 and the blocking ring 62.
  • FIG. 19 shows the alignment of these three elements relative to one another in the blocking position of the blocking ring arrangement 60
  • FIG. 20 shows the arrangement of the three elements in a rotational position relative to one another ,
  • the blocking ring 62 is rotatably connected to the coupling ring 63 and thus translationally adjustable exclusively along the vertical chair longitudinal axis 3.
  • the blocking ring 62 has on its the chair axis 3 facing inside a blocking teeth 66.
  • the blocking ring 62 has guide recesses 78 at regular intervals. In the guide recesses 78 engage guide springs 79 of the support frame 2, which are shown in Figure 13.
  • the blocking ring 62 and thus also the coupling ring 63 with respect to the support frame 2 are rotationally fixed.
  • the blocking ring 62 is prestressed into its rest position by means of blocking ring springs 81.
  • FIGS. 21 and 22 illustrate how the blocking ring 62 and the central element 64 are aligned with one another in the blocking position and in the rotational position.
  • the central element 64 is latched to the blocking ring 62 in that at least one blocking tooth 68 of the central element 64 engages in the blocking toothing 66 of the blocking ring 62.
  • a height adjustment of the blocking ring 62 along the chair axis 3 described above with reference to FIGS. 19 and 20 now leads to the blocking teeth 68 coming out of engagement with the blocking toothing 66. This is achieved in that the blocking ring 62 enters or is lifted into a receiving groove 83 of the central element 64.
  • FIGS. 23 and 24 now show a further embodiment of the chair, with the roller elements 30 described with reference to FIGS. 1 to 9 interacting with the blocking ring arrangement 60, as described below. In order to avoid repetition, only the differences from the roller elements 30 shown in FIGS. 1 to 9 will be described below with regard to the roller elements 30 shown in FIGS. 23 and 24.
  • Each roller element 30 is adjustable by means of a fifth Bowden cable 38 from its locking position to its freewheeling position.
  • the fifth Bowden cable 38 does not run between the folding element 10 and the roller element 30 but between the blocking ring 62 of the blocking ring arrangement 60 and the roller element 30.
  • the blocking ring arrangement 60 serves as Release element for the roller elements 30.
  • the locking pawl 90 instead of locking lugs 98 locking recesses 99 has. In the locking position, the locking recess 99 engages over the locking toothing 88.
  • the shape of the locking tabs 98 corresponds to the shape of the locking recesses 100, so that a form-locking connection between the two is ensured.
  • the outer surface of the locking pawl 90 is also not arcuate in shape but can be divided into three largely straight sections.
  • a first section is penetrated by the locking pawl axis 94, a second or middle section has the locking recesses 99 and a third section engages the fifth Bowden cable 38.
  • a synopsis of Figures 23 and 24 shows that a height adjustment of the locking ring 62 causes the Bowden cables 38 are actuated and thus the locking pawls 90 are moved from its locked position to its freewheeling position.
  • the rotation lock arrangement or the blocking ring arrangement 60 can be activated by means of a release element or by means of the folding element 10 and / or by means of a release lever and / or by means of a release button, which rotation locking arrangement itself serves as another release element.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Abstract

L'invention concerne une chaise, comprenant un cadre de support (2), une unité porteuse (4) qui est disposée sur le cadre de support (2), et un élément d'assise (6) ainsi qu'un élément de dossier (8) qui sont portés respectivement par l'unité porteuse (4). La chaise comprend en outre un premier élément de libération, qui se trouve entre l'unité porteuse (4) et l'élément d'assise (6), avec lequel au moins un câble Bowden (34, 35, 36, 37) d'au moins un élément fonctionnel entre en prise, ledit élément de libération pouvant être déplacé entre une position de repos, dans laquelle il n'agit pas sur l'au moins un câble Bowden (34, 35, 36, 37), et une position d'activation, dans laquelle il agit sur l'au moins un câble Bowden (34, 35, 36, 37) et ainsi active l'élément fonctionnel. L'élément de libération est précontraint dans sa position de repos au moyen d'un moyen de serrage d'élément de libération, le premier élément de libération étant réalisé de telle façon que le déplacement de sa position de repos à sa position d'activation s'effectue au moyen du poids d'un objet agissant sur le premier élément de libération.
PCT/EP2018/072874 2017-08-25 2018-08-24 Chaise avec un élément de libération WO2019038419A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18765375.3A EP3672451B1 (fr) 2017-08-25 2018-08-24 Chaise avec un élément de libération

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202017105115.3 2017-08-25
DE202017105115.3U DE202017105115U1 (de) 2017-08-25 2017-08-25 Stuhl mit einem Freigabeelement

Publications (1)

Publication Number Publication Date
WO2019038419A1 true WO2019038419A1 (fr) 2019-02-28

Family

ID=63491582

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Application Number Title Priority Date Filing Date
PCT/EP2018/072874 WO2019038419A1 (fr) 2017-08-25 2018-08-24 Chaise avec un élément de libération

Country Status (3)

Country Link
EP (1) EP3672451B1 (fr)
DE (1) DE202017105115U1 (fr)
WO (1) WO2019038419A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019158159A1 (fr) * 2018-02-14 2019-08-22 Kinema Gmbh Meuble d'assise et de support

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113729428A (zh) * 2021-05-27 2021-12-03 广东联友办公家具有限公司 一种电控底盘及座椅
DE102021210905A1 (de) 2021-09-29 2023-03-30 Sedus Stoll Aktiengesellschaft Stuhl, insbesondere Hochstuhl, mit zwei Zuständen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0179748A2 (fr) * 1984-10-17 1986-04-30 Liedberg / Östlund AB Chaise de travail
WO2007110732A2 (fr) * 2006-03-24 2007-10-04 Herman Miller Inc. Meuble

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0179748A2 (fr) * 1984-10-17 1986-04-30 Liedberg / Östlund AB Chaise de travail
WO2007110732A2 (fr) * 2006-03-24 2007-10-04 Herman Miller Inc. Meuble

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019158159A1 (fr) * 2018-02-14 2019-08-22 Kinema Gmbh Meuble d'assise et de support
US11937708B2 (en) 2018-02-14 2024-03-26 Mykinema Gmbh Seating and support furniture

Also Published As

Publication number Publication date
DE202017105115U1 (de) 2018-11-27
EP3672451B1 (fr) 2020-12-02
EP3672451A1 (fr) 2020-07-01

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