EP2886014A1 - Chaise - Google Patents

Chaise Download PDF

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Publication number
EP2886014A1
EP2886014A1 EP14196713.3A EP14196713A EP2886014A1 EP 2886014 A1 EP2886014 A1 EP 2886014A1 EP 14196713 A EP14196713 A EP 14196713A EP 2886014 A1 EP2886014 A1 EP 2886014A1
Authority
EP
European Patent Office
Prior art keywords
actuating rod
seat
thread
rod part
chair according
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
Application number
EP14196713.3A
Other languages
German (de)
English (en)
Other versions
EP2886014B1 (fr
Inventor
Igor Gorte
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Friedrich W Dauphin GmbH and Co
Dauphin Entwicklungs und Beteiligungs GmbH
Original Assignee
Friedrich W Dauphin GmbH and Co
Dauphin Entwicklungs und Beteiligungs 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 Friedrich W Dauphin GmbH and Co, Dauphin Entwicklungs und Beteiligungs GmbH filed Critical Friedrich W Dauphin GmbH and Co
Publication of EP2886014A1 publication Critical patent/EP2886014A1/fr
Application granted granted Critical
Publication of EP2886014B1 publication Critical patent/EP2886014B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts

Definitions

  • the invention has for its object to provide a chair whose seat is adjustable in a particularly simple manner in the inclination and locally fixable.
  • the seat should be extremely reliable in the inclination adjustable and locally fixable.
  • the seat should also be very quickly and easily adjustable in an upper inclination position.
  • the seat can be transferred or displaced into an upper inclination position in two different ways.
  • the seat has a front pivot axis about which the seat pivots at a pitch adjustment.
  • the seat is adjustable by rotation of the actuating rod in an upper inclination position.
  • the seat is adjustable by applying a corresponding manual, upward adjustment force directly to the seat in an upper inclination position. It is advantageous if the seat is adjustable in a variety of tilt positions.
  • the seat is adjustable between a lower end position and an upper end position relative to the seat support.
  • the adjustment force is directed towards an upper position.
  • the adjusting force is a tensile or compressive force.
  • the adjustment force has a vertical component. It can also have a horizontal component.
  • the seat in the set inclination is in each case automatically mechanically fixed locally such that an adjustment is prevented by a vertical force acting on the seat in the direction of the lower position.
  • the actuating rod extends substantially horizontally. Preferably, this also runs in a transverse direction of the seat.
  • the actuator rod thread and the adjustment slide thread engaging therewith are complementary to one another such that there is a gear-type connection therebetween and rotational movement of the actuating rod results in translational movement of the at least one adjustment slide ,
  • the at least one actuating rod thread and the adjusting slide thread thus preferably together form a gear or screw gear. It is advantageous if the at least one adjusting slide between a laterally outer position and a laterally inner position is adjustable. Alternatively, the at least one adjustment slide is adjustable between a front position and a rear position.
  • the at least one actuating rod thread or adjusting slide thread has a pitch angle ⁇ .
  • P h is the thread pitch of each thread, while d 2 is the flank diameter of each thread.
  • the thread pitch is known to be the axial distance between two adjacent thread tips or between two adjacently arranged, unidirectional thread flanks.
  • the flank diameter is known to be the perpendicular to the longitudinal axis of the thread measured distance between two opposing thread flanks.
  • the thread friction angle p ' depends on the material pairing. This is preferably between 1 ° and 15 °.
  • the embodiment according to claim 2 allows an adjustment of the seat in an upper position by applying the adjusting force directly to the seat.
  • the adjustment force does not insurmountable resistance from the Threaded connection contrary.
  • the actuating rod thread or adjusting slide thread is preferably not self-locking.
  • the conversion efficiency given in claim 3 is the ratio of usable to work done.
  • the transmission is preferably not self-locking.
  • the at least one actuating rod thread and / or adjusting slide thread according to claim 5 is thus preferably designed as a steep thread or coarse thread.
  • the embodiment according to claim 6 leads to a particularly good power transmission.
  • the at least one adjustment member presses the seat from bottom to top when the at least one adjustment slide is moved accordingly.
  • the adjustment part-slope or seat-adjustment bevel runs obliquely with respect to the direction of movement of the at least one adjustment slide.
  • the seat adjustment bevel may be provided directly on the seat or on a separate component which is fixedly connected to the seat.
  • the actuating rod is made in several parts.
  • the distance between the actuating rod parts is so variable, resulting in a corresponding change in the total length of the actuating rod. It is advantageous if the first actuating rod part and the second actuating rod part have an essentially identical length.
  • the actuating rod parts are aligned with each other. This allows a very simple and reliable storage of the operating rod.
  • the first actuating rod part and / or the second actuating rod part is displaceable in the direction of its longitudinal axis relative to the coupling part.
  • the coupling part may be axially fixed to one of the operating rod parts. It is arranged between the first actuating rod part and the second actuating rod part. Conveniently, it is substantially shorter than the first actuating rod part and / or the second actuating rod part.
  • the first actuating rod part and / or the second actuating rod part in a cross-section with the coupling part cooperating and displaceable to the coupling portion in cross section out of round, more preferably polygonal executed.
  • the coupling part is executed there complementary. This allows a particularly good and effective transmission of the rotational movement between the two actuating rod parts.
  • the coupling part has a first coupling receptacle for receiving the first coupling portion of the first actuating rod part and a second coupling receptacle for receiving the second coupling portion of the second actuating rod part ,
  • the embodiment according to claims 13 and 14 leads to a functionally reliable and resilient fixation of the seat by clamping or friction when acting on this a vertical force. For example, a person sitting on the seat causes such a vertical force.
  • first actuating rod part and the second actuating rod part are spaced apart from one another, only one of the actuating rod parts is displaced laterally outwards.
  • the other actuating rod part is preferably fixed axially.
  • the first actuating rod part or the second actuating rod part is shifted laterally outwards by 1 mm to 8 mm, more preferably between 2 mm and 5 mm.
  • both actuating rod parts are displaced accordingly laterally outward.
  • the Fig. 1 and 2 show an office chair in its entirety.
  • This office chair comprises a chair frame 1 with a foot frame 2, which is supported by a plurality of running rollers 3 against a floor, not shown, such as a foot floor.
  • a height-adjustable, running in a vertical direction chair column 4 is attached, at the upper end of a seat support 5 is attached.
  • the seat support 5 is configured substantially in two parts; it has a front seat support part 6 and a rear seat support part 7.
  • the front seat support part 6 is attached to the chair pillar 4.
  • the rear seat support member 7 is hinged to the front seat support member 6 above the chair pillar 4 by means of a pivot joint (not shown) with a horizontal pivot axis (not shown).
  • a seat height adjustment device (not shown) is provided, which serves for height adjustment of the chair column 4.
  • the seat support 5 carries a seat 8, which has a free, upper seat surface 9 for seating on the seat 8.
  • this towering back-back support 10 At the rear seat support part 7 of this towering back-back support 10 is attached to which a backrest 11 is arranged for leaning.
  • the chair also includes a seat tilt adjustment device for pitch adjustment of the seat 8, which will be discussed in more detail below.
  • the seat carrier 5 has a front seat carrier portion 13 and a rear seat carrier portion 14 provided opposite to the front seat carrier portion 13.
  • On the seat support 5 are in the rear seat support portion 14 slidably guided two adjustment slide 15, which are part of the seat tilt adjustment device.
  • the adjusting slide 15 are each between a laterally outer position in which the seat 8 in his in Fig. 4 shown lower position, and a laterally inner position in which the seat in the in Fig. 5 shown upper position, along a transverse sliding path synchronously adjustable.
  • the adjusting carriages 15 are displaceable relative to one another along straight opposite directions of movement on the sliding path.
  • the adjusting slide 15 are formed generally identical. They are preferably formed of a metal material or rigid plastic material.
  • Each adjusting slide 15 has an adjusting slide thread 16 which is designed as an internal thread and is provided on a wall of the adjustment slide 15 delimiting a guide channel 17.
  • the adjusting slide threads 16 are each designed as a steep thread or coarse thread and have a pitch angle ⁇ . They are not self-locking.
  • the guide channel 17 passes through the respective adjusting slide 15 and extends in each case along the direction of movement of the respective adjusting slide 15 in a lower region 18 of the adjusting slide 15.
  • the guide channel 17 is semicircular in cross-section and open at the bottom.
  • Each adjustment slide 15 has an inner adjustable slope or ramp 19 which faces the seat 8.
  • the adjusting bevels 19 are further facing each other.
  • Each adjustment bevel 19 extends obliquely with respect to the direction of movement of the respective adjustment slide 15.
  • the adjustment bevels 19 each run from the side outside above to the side inside down.
  • Each adjustment slide 15 also has an adjustment fuse 20.
  • the adjustment fuses 20 are connected to the associated adjustment bevel 19 via a respective central web 21.
  • the central web 21 has compared to the adjustment fuse 20 and the adjusting bevel 19 a reduced width.
  • Each adjustment fuse 20 has an adjustment bevel 19 facing, inner backup surface 22.
  • the backup surfaces 22 each parallel to the adjacent Verstell-bevels 19.
  • By each backup surface 22 and the adjacent Verstell-slope 19 is on both sides of the central web 21 each have a securing recess 23 is formed, which is open to the side outside and the end.
  • Each adjusting slide 15 has in its lower region 18 guide webs 24, which extend along the direction of movement of the respective adjusting slide 15.
  • the guide webs 24 of the adjustment slide 15 lie in a common plane and are in sliding connection with guide rails 25 which are formed on the seat support 5.
  • the guide rails 25 extend in the rear seat support part 7 adjacent and parallel to a rear edge 26 of the seat support fifth
  • the seat tilt adjustment device also includes an actuating rod 27, which serves for the synchronous and uniform actuation of the two adjusting slide 15 and is rotatably mounted on the seat support 5.
  • the operating rod 27 extends in a transverse direction of the seat 8 substantially parallel to the rear edge 26.
  • the actuating rod 27 is rotatably mounted in the rear seat support portion 14.
  • a corresponding, upwardly open bearing recess 28 is provided for this purpose in the rear seat support area 14.
  • the operation rod 27 has a first operation rod part 29 and a second operation rod part 30.
  • the first operation rod part 29 and the second operation rod part 30 are made separately. They have a common longitudinal center axis 31 about which they are rotatable or pivotable together.
  • the two actuating rod parts 29, 30 are each formed of a metal material or rigid plastic material.
  • the first actuation rod portion 29 has a first actuation rod thread 32 while the second actuation rod portion 30 has a second actuation rod thread 33.
  • the actuating rod threads 32, 33 each extend in laterally outer regions of the actuating rod 27. They are preferably arranged spaced apart in the direction of the longitudinal center axis 31.
  • the first actuating rod thread 32 is adapted to the adjusting slide thread 16 of the associated adjusting slide 15, while the second actuating rod thread 33 is adapted to the adjusting slide thread 16 of the associated adjusting slide 15 ,
  • the two actuating rod threads 32, 33 are each designed as a steep thread or coarse thread. They are not self-locking.
  • the first actuating rod thread 32 and the second actuating rod thread 33 are formed running in opposite directions to each other.
  • One of the actuating rod threads 32, 33 is left-handed, while the other is right-handed.
  • the two actuating rod parts 29, 30 each have an inner end 34 and 35, respectively.
  • the inner ends 34, 35 are arranged facing each other or adjacent to each other.
  • the actuator rod member 29, 30 Adjacent to each inner end 34, 35, the actuator rod member 29, 30 has a rotational transmission body 36, 37, respectively.
  • the rotational motion transmission members 36, 37 are made identical and have a non-circular shape Cross-section. More precisely, the rotational movement transmission bodies 36, 37 each have a non-circular or polygonal outer contour in cross-section.
  • the first actuating rod part 29 has two adjacent ring webs 38, each projecting radially outward and form an axially effective stop for the first actuating rod part 29. Between the ring lands 38 is an axially limited annular space.
  • Each actuating rod thread 32, 33 is associated with one of the adjusting slide 15.
  • the adjusting slide 15 are about their adjustment slide thread 16 with the actuating rod threads 32 and 33 in threaded connection or in engagement.
  • a conversion efficiency ⁇ between the first actuating rod thread 32 and the adjusting slide thread 16 of the associated adjustment slide 15 is greater than 0.5.
  • a conversion efficiency ⁇ between the second actuating rod thread 33 and the adjusting slide thread 16 of the associated adjusting slide 15 is greater than 0.5.
  • the adjusting bevels 19 are facing each other in the assembled state of the adjusting slide 15.
  • the inclination of the seat 8 is dependent on the respective position of the adjusting slide 15. In the lower position of the seat 8, the distance between the adjusting slide 15 is substantially greater than in an upper position of the seat eighth
  • the second actuating rod part 30 has a toothed wheel 39 with a plurality of teeth 40.
  • the toothed wheel 39 meshes with a toothed wheel 41 which is part of an operating wheel 42.
  • the toothed wheel 41 is located in the center of the control wheel 42.
  • the control wheel 42 is rotatably mounted on the seat support 5 and is for tilt adjustment of the seat 8 manually rotatable or pivotable by a user.
  • the toothed wheel 41 may be larger in diameter than the toothed wheel 39 to allow easier adjustment of the seat 8 in its inclination.
  • the two rotational movement transmission body 36, 37 engage from opposite sides in an intermediate rigid coupling part 43, which is preferably designed like a sleeve.
  • the coupling part 43 has a first coupling receptacle 44 for positively receiving the first rotational movement transmission body 36 and a second coupling receptacle 45 for positively receiving the second rotational movement transmission body 37.
  • the coupling receptacles 44, 45 are identical and separated by a separating wall 46. Opposite to the partition wall 46 is each Coupling receptacle 44, 45 open at the front to the outside.
  • the coupling receivers 44, 45 are adapted in cross-section to the rotational movement transmission bodies 36 and 37, respectively, or are complementary thereto.
  • the coupling receptacles 44, 45 are therefore each non-circular or polygonal in cross-section.
  • the seat adjustment bevels 47 are provided, which are arranged in a rear region of the seat 8.
  • the seat adjustment bevels 47 converge from the outside laterally above to the inside laterally down together. They thus run obliquely to a horizontal.
  • the seat reclining bevels 47 preferably include an angle between the horizontal of 20 ° and 70 °, more preferably between 30 ° and 60 °.
  • each adjustment slide 15 is associated with a seat adjustment bevel 47.
  • the adjustment bevel 19 of the respective adjustment slide 15 is arranged adjacent to the associated seat adjustment bevel 47.
  • the inclination of the adjusting bevel 19 substantially coincides with the inclination of the associated seat-adjusting bevel 47.
  • an opening 48 extends therealong.
  • a front seat area 49 the seat 8 is supported relative to the seat support 5.
  • the seat 8 is pivotally mounted there about a pivot axis 50.
  • the pivot axis 50 extends parallel to the longitudinal center axis 31. It runs horizontally.
  • the seat 8 is in its lower inclination position.
  • the seat 8 extends substantially horizontally or is only slightly inclined relative to the horizontal.
  • the adjustment slide 15 are each in their laterally outer position, adjacent to seat side edges 51 and along the longitudinal center axis 31 have a maximum distance from each other.
  • the seat adjustment bevels 47 are on top of the adjusting bevels 19 of the adjusting slide 15.
  • the central webs 21 respectively pass through the elongate openings 48, wherein the adjoining the opening 48 areas of the seat-adjusting bevel 47 engage in the adjacent securing recesses 23.
  • the seat 8 is secured by the engagement of the seat adjustment bevels 47 in the securing recesses 23 against lifting up.
  • the adjusting slide 15 but are displaceable relative to the seat-adjusting bevels 47.
  • the actuating rod threads 32, 33 also rotate about the longitudinal center axis 31.
  • the rotating movement of the actuating rod members 29, 30 becomes and their actuating rod threads 32 and 33 converted into a translational displacement of the adjusting slide 15 along the longitudinal center axis 31.
  • the adjustment slide 15 are thus brought together in each case from its laterally outer position together or synchronously in the direction of a laterally inner position, wherein the distance of the adjusting slide 15 during its movement along the actuating rod parts 29, 30 is reduced.
  • the seat reclining bevels 47 of the seat 8 are in sliding contact with the adjusting bevels 19 of the adjusting slides 15, the relative movement between the adjusting slides 15 and the seat adjusting bevels 47 and the merging the adjustment slide 15 of the seat 8 is pushed up there.
  • the seat 8 pivots about its pivot axis 50 upwards.
  • Fig. 5 the adjustment slide 15 are in a laterally inner position and have a distance from each other which is significantly smaller than the distance which is present at the lower position of the seat 8.
  • the seat 8 is now in an upper position and is more inclined relative to the horizontal position relative to its lower position.
  • the seat 8 can also be transferred to an upper position when, in a rear seat area 53 on the seat 8, a tensile force or pressure directed towards an upper position Force is applied.
  • a tensile force or pressure directed towards an upper position Force is applied.
  • the adjusting carriages 15 are moved towards one another along the longitudinal center axis 31, which also causes a rotation of the actuating rod parts 29, 30 about the longitudinal center axis 31.
  • the merging of the adjusting slide 15 by the application of the adjusting force on the seat 8 is due to the engagement of the seat adjustment bevels 47 in the securing recesses 23.
  • the seat adjustment bevels 47 exert on the adjusting carriages 15 a laterally outwardly directed force.
  • the actuating rod parts 29, 30 are pressed each quasi outward.
  • the first operating rod member 29 prevents movement thereof laterally outwardly by the engagement of the projection 54 in the annular space between the ring lands 38. But there is a frictional force generated there.
  • the second actuating rod part 30 wedges in its bearing or on a side wall of the seat support 5. The seat 8 is thus secured in its respective inclination.
  • the seat 8 can be converted by reversed rotation of the control wheel 42 back to its lower position. An adjustment of the seat 8 by a corresponding, downward adjustment force is - as described-not possible.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
EP14196713.3A 2013-12-19 2014-12-08 Chaise Active EP2886014B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013226747.9A DE102013226747A1 (de) 2013-12-19 2013-12-19 Stuhl

Publications (2)

Publication Number Publication Date
EP2886014A1 true EP2886014A1 (fr) 2015-06-24
EP2886014B1 EP2886014B1 (fr) 2016-04-27

Family

ID=52011079

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14196713.3A Active EP2886014B1 (fr) 2013-12-19 2014-12-08 Chaise

Country Status (2)

Country Link
EP (1) EP2886014B1 (fr)
DE (1) DE102013226747A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10113467A1 (de) * 2001-03-19 2002-10-02 Guenter Kleinkopf Sitzmöbel mit separat gelagertem Sitzelement
DE102009051119A1 (de) * 2009-08-14 2011-02-17 Dauphin Entwicklungs- U. Beteiligungs-Gmbh Stuhl
EP2596721A1 (fr) * 2011-11-25 2013-05-29 Dauphin Entwicklungs- u. Beteiligungs-GmbH Chaise

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10113467A1 (de) * 2001-03-19 2002-10-02 Guenter Kleinkopf Sitzmöbel mit separat gelagertem Sitzelement
DE102009051119A1 (de) * 2009-08-14 2011-02-17 Dauphin Entwicklungs- U. Beteiligungs-Gmbh Stuhl
EP2596721A1 (fr) * 2011-11-25 2013-05-29 Dauphin Entwicklungs- u. Beteiligungs-GmbH Chaise

Also Published As

Publication number Publication date
DE102013226747A1 (de) 2015-06-25
EP2886014B1 (fr) 2016-04-27

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