EP3528667A1 - Actuator and backrest device, and piece of seating furniture having one such - Google Patents
Actuator and backrest device, and piece of seating furniture having one suchInfo
- Publication number
- EP3528667A1 EP3528667A1 EP17791633.5A EP17791633A EP3528667A1 EP 3528667 A1 EP3528667 A1 EP 3528667A1 EP 17791633 A EP17791633 A EP 17791633A EP 3528667 A1 EP3528667 A1 EP 3528667A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- adjusting device
- guide housing
- backrest
- longitudinal axis
- formwork
- 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
- 238000006073 displacement reaction Methods 0.000 claims abstract description 24
- 230000000903 blocking effect Effects 0.000 claims description 42
- 238000009415 formwork Methods 0.000 claims description 23
- 230000003213 activating effect Effects 0.000 claims description 13
- 230000009849 deactivation Effects 0.000 claims description 12
- 230000000717 retained effect Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 4
- 230000004913 activation Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000009416 shuttering Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C19/00—Bedsteads
- A47C19/02—Parts or details of bedsteads not fully covered in a single one of the following subgroups, e.g. bed rails, post rails
- A47C19/021—Bedstead frames
- A47C19/022—Head or foot boards
-
- 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
- A47C1/03—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests
-
- 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
- A47C7/36—Support for the head or the back
- A47C7/40—Support for the head or the back for the back
- A47C7/402—Support for the head or the back for the back adjustable in height
Definitions
- the invention relates to a control device according to the preamble of independent claim 1.
- a first element can be moved linearly and in particular quasi vertically relative to a second element via a predefined adjustment path.
- a predefined adjustment path In particular, it may be provided for a vertical movement of a backrest, for example in a chair and in particular an office chair.
- backrests which are intended to allow ergonomic sitting.
- the backrests are connected via a backrest support with a chair base or a seat.
- the backrest support on the one hand allow a resilient movement of the backrest to the rear and on the other hand a resilient movement in a lateral direction or a twisting movement to a certain extent.
- EP 2 721 962 A1 describes a backrest in which a base plate of a backrest is height-adjustable mounted on two webs of a backrest carrier connected to a seat. On the base plate a dorsokinetic bearing is arranged, which allows rotational movements. For height adjustment, the webs are each equipped with a series of locking structures. On the base plate are a locking lever, a spring mounted Button and a cover mounted. In this case, the locking lever is adapted to engage in the latching structures of the webs. By the button is pressed against the spring force upwards, the locking lever is disengaged with respect to the latching structures.
- the base plate along the webs can be moved down and up.
- the springs press them down again and the locking lever optionally engages elsewhere in the latching structures of the webs.
- the base plate is connected in this position again with the webs and thus the backrest carrier stationary.
- an adjusting device which has a sliding element arranged in a housing-like guide rail.
- the sliding element comprises a grid and is movable along its longitudinal axis relative to the guide rail.
- the adjusting device further comprises a locking element in the form of a leaf spring, which has a latching nose cooperating with the grid. If the sliding element is pulled out of the guide rail along the grid, the leaf spring is taken off the sliding element at a certain point and lifted onto a bearing surface. The leaf spring is bent and lifted the latch from the grid.
- the sliding element can now be moved against the grid until it takes the leaf spring in the other direction again and moves down from the support surface. The catch then engages in the grid again.
- a disadvantage of means for adjusting the height of backrests in the manner described above is that typically comparatively many or complicated to be installed components are present. This can make the production of chair backs or chairs relatively expensive and expensive. In addition, such devices are often also relatively susceptible to wear, which makes regular maintenance necessary.
- the object of the following invention is therefore to propose an adjusting device or a system for adjusting the height of a backrest in a chair, which can be relatively easily manufactured and maintained and is relatively robust and durable. Presentation of the invention
- An adjusting device for guided linear and in particular quasi-vertical movement of a first element relative to a second element via a predefined adjustment comprises a guide housing, arranged in a guide housing displacement profile with a longitudinal axis and a blocking element.
- the sliding profile or the guide housing has a locking row extending along the longitudinal axis with a plurality of locking ramps.
- the locking element is resiliently mounted and engages in a locking position in the locking row of the sliding profile or the guide housing, so that the sliding profile in a first direction is gradually movable along the longitudinal axis to the guide housing and a movement in a direction opposite to the first direction second direction through the one of the locking ramps stop blocking element is blocked.
- the blocking element is held out of engagement with or with respect to the latching row of the sliding profile or of the guide housing, so that the sliding profile is freely movable in the first direction and in the second direction along the longitudinal axis to the guide housing.
- the blocking element is provided rotatably supported about a rotation axis, wherein it is resiliently rotated in the locking position about the axis of rotation in the locking row of the sliding profile or the guide housing and preferably rotates about the axis of rotation back and forth when the sliding profile in the first direction moved along the longitudinal axis to the guide housing. In the release, it is as far as the axis of rotation held in a holding position that it is out of engagement with or with respect to the locking row of the sliding profile or the guide housing.
- housing may refer to an element in connection with the guide housing, in or on which the displacement profile is arranged or which supports the sliding profile.
- the guide housing may be formed, for example, in the form of a shell completely open or partially open. In particular, it may have openings that allow access to the sliding profile. It may also at least partially surround the sliding profile.
- the term "profile” in connection with the displacement profile may refer in particular to an elongated component, whereby it may be quasi-rectangular or the like, its longitudinal axis corresponding to the axis in which it extends lengthwise ]
- the term “ramp” as used herein may refer to a rising surface. In this case, ramps, for example, increase along the longitudinal axis of the displacement profile and thus form an acute angle to the longitudinal axis.
- the latching ramps of the latching row of the sliding profile or of the guide housing can each include a ramp section, where they rise along the longitudinal axis in the first direction, and a stop section, where they drop abruptly to the longitudinal axis and thus form a stop with respect to a movement in the second direction ,
- the stopper portion may be at a more or less right angle to the longitudinal axis.
- the blocking element is rotatably mounted about the axis of rotation.
- the axis of rotation is preferably aligned transversely and in particular substantially at right angles to the longitudinal axis.
- Such a pivot bearing can be constructed relatively simple and gentle to the material.
- the locking element can rotate resiliently in the locking position about the axis of rotation, it is advantageously resiliently mounted so that it is biased in the direction of the locking row of the sliding profile or the guide housing.
- a separate spring may be provided.
- the blocking element itself comprises a spring section which biases the blocking element in the direction of the latching row.
- the spring portion may rest in the detent position, for example, to a guide housing wall, so that the spring portion is clamped between the guide housing and sliding profile and presses the locking element in the direction of the detent row.
- the inventive adjusting device allows a relatively simple structure a secure gridded adjustment of the first element to the second element.
- a first and a second element are moved in a predefined scope in particular vertically to each other.
- it can be used in furniture, such as forcitenverstellen a headboard of a bed frame or for height adjustment of an armrest in a chair.
- Particularly advantageous it can be used to adjust the height of a backrest of a chair.
- the adjusting device according to the invention makes it possible for the height adjustment to take place without tools and without any operating unit such as a key or a handle.
- the simple stable construction can allow the adjusting device to be relatively robust and durable. A maintenance effort can be kept small.
- the adjusting device can serve in particular for the height adjustment of the first element to the second element.
- the gravity can move the sliding profile down each, so that the locking element rests against one of the latching ramps of the latching structure.
- the adjusting device for height adjustment of a backrest can be installed in a chair or seating.
- the detent row is formed on the sliding profile and the blocking element is rotatably mounted on the guide housing.
- the locking element and the latching row enables an efficient and stable construction of the adjusting device.
- the movable blocking element can thus be mounted on the housing and the latching row can be mounted on the movable sliding profile in the guide housing.
- the guide housing on a holder structure which holds the locking element when it is rotated in the holding position.
- the holding structure of the guide housing preferably comprises an opening in which the blocking element is located when it is rotated into the holding position, wherein the blocking element rests against one edge of the opening of the guide housing in a form-fitting or frictional engagement.
- the opening may be provided in the guide housing continuous Be opening or a depression. It may be formed in particular in a guide housing wall.
- the edge of the opening can be shaped so adapted to the blocking element that a reliable frictional engagement can be ensured. For example, it may have a dent, which is shaped congruent to a bulge of the barrier element.
- the blocking element in this case has a clamping nose, which cooperates in the holding position of the blocking element with the holding structure of the guide housing.
- a clamping nose which cooperates in the holding position of the blocking element with the holding structure of the guide housing.
- the adjusting device has a deactivating structure which rotates the blocking element in the holding position when the displacement profile is moved in the first direction against one end of the predefined displacement along the longitudinal axis to the guide housing.
- a deactivating structure allows the blocking element to be automatically turned to the holding position if the sliding profile is displaced sufficiently far. In application of the adjusting device, this can be easily set in the exemption by moving the sliding profile and guide housing sufficiently far in the first direction to each other. This allows a comfortable, simple and reliable operation in many applications.
- the deactivating preferably has an integrally formed on the sliding profile deactivation, along which the blocking element can be pressed into the holding position.
- the deactivation ramp is preferably arranged in the direction of the longitudinal axis adjacent to the latching row. With such a deactivation ramp, the blocking element can be reliably turned into the holding position in a simple manner without additional components having to be provided.
- the actuating device has an activating structure which rotates the blocking element out of the holding position when the displacement profile in the second direction is moved towards the guide housing along one of the predefined displacement paths along the longitudinal axis.
- an activating structure allows the blocking element to be automatically rotated out of the holding position when the sliding profile is displaced sufficiently far in the second direction.
- the adjusting device can thus simply be set in the locked position be moved sufficiently far in the second direction to each other by sliding profile and guide housing. This allows a comfortable, simple and reliable operation in many applications.
- the activating preferably has an integrally formed on the sliding profile activation ramp along which the blocking element can be pressed into the holding position.
- the activating ramp is preferably arranged adjacent to the edge of the opening.
- the guide housing has a substantially circular cylindrical outer circumference.
- Such a guide housing may allow the actuator to be easily installed.
- it may allow some twisting of an element connected to it.
- such a guide housing allow for an adjusting device used for adjusting the height of a backrest that the backrest can be tilted to a certain extent laterally to the adjusting device and thus to the backrest support. This can be important for an ergonomic backrest.
- the adjusting device comprises an axle rod which is connected to the guide housing, wherein the locking element is mounted on the axle rod, so that the axle rod forms the axis of rotation of the locking element.
- the Achstab can be integrally formed in the blocking element or it can be vorgeh Hughes seen as a separate component a corresponding hole in the locking element. Such an Achstab allows easy mounting of the locking element in the guide housing in a rotatable position. Also allows such Achstab a reliable and stable turning of the locking element.
- the backrest device comprises a backrest, a backrest support and an adjusting device as described above, wherein the backrest is mounted on the guide housing of the adjusting device and the backrest support on the sliding profile of the adjusting device.
- the backrest and the backrest support can each directly or via other components be mounted indirectly on the guide housing or on the sliding profile.
- the backrest can therefore be the first element connected to the adjusting device and the backrest support the second element connected to the adjusting device, which can be moved linearly relative to one another.
- the adjusting device of the backrest device comprises a guide housing having a substantially circular cylindrical outer periphery and the backrest of the backrest device comprises a socket which has a substantially corresponding to the outer periphery of the guide housing of the adjusting device shaped inner surface.
- the adjusting device is preferably arranged in the socket of the backrest, so that the socket of the backrest is rotatable about the guide housing of the adjusting device.
- Such a rotatable connection between the backrest and adjusting device allows lateral flexibility, as is not readily possible by a fixed connection.
- Such a backrest device can thus allow a relatively simple construction a preferred flexibility in the backrest region of a Suhl. This allows the chair to be ergonomic and comfortable.
- the version of the backrest preferably comprises a rotatably mounted for adjusting device formwork and arranged between formwork and adjusting rotary cylinder, wherein the rotary cylinder for formwork and the guide housing of the adjusting device is rotatable. In this way, the rotatable connection can be realized efficiently and stably.
- the backrest preferably has a further socket and a leaning portion, which merges laterally into one of the two versions, and another arranged in the other version of the backrest adjusting device whose guide housing are mounted on the backrest and the sliding profile on the backrest support.
- a two-sided held leaning allows comfortable support of a back of a user of the chair with the mentioned lateral flex.
- the version of the backrest to another rotary cylinder wherein the two rotary cylinders are fixedly connected to the leaning portion.
- Leaning and rotary cylinder can also be made in one piece from the same material.
- the further version preferably comprises a rotationally fixed to further adjusting device mounted further formwork, wherein the further rotary cylinder between formwork and adjusting device is arranged and the further rotary cylinder for further formwork and to the guide housing of the further adjusting device is rotatable.
- Such formwork allows a stable and flexible construction.
- the formwork and the other formwork preferably each comprise an opening through which the rotary cylinder or the further rotary cylinder is connected to the leaning portion.
- the openings in the formwork and the further formwork preferably define a circumference in which the rotary cylinder or the further rotary cylinder is rotatable about the guide housing of the adjusting device or the guide housing of the further adjusting device. In this way, guided rotation can be stably implemented over a sufficient amount.
- Another further aspect of the invention relates to a chair or a chair and in particular office chair with a seat support, a seat mounted on the seat support and a backrest means as described above, wherein the backrest support is arranged on the seat support.
- Fig. 1 is a perspective view of an embodiment of an inventive adjusting device
- Fig. 2 is a view of the adjusting device of Fig. 1;
- Fig. 3 is a cross-sectional view of the actuator of Fig. 1 taken along the line AA of Fig. 2 during deactivation from a detent position to an exemption position;
- FIG. 4 is a cross-sectional view of the actuator of FIG. 1 in the release position
- Fig. 5 is a cross-sectional view of the actuator of Fig. 1 during a change from the release to the detent position;
- Fig. 6 is a further perspective view of the adjusting device of Fig. 1, in which a
- FIG. 7 shows a cross-sectional view of an exemplary embodiment of a backrest device according to the invention with two adjusting devices according to FIG. 1.
- Fig. 1 shows an embodiment of an inventive actuating device 1 with a guide housing 2 and a sliding profile 3.
- the guide housing 2 comprises two interconnected housing halves, which are formed together substantially hollow cylindrical.
- the guide housing 2 has a quasi circular cylindrical outer surface.
- the guide housing 2 is designed with a closed end side 21 and at the bottom with an open end side 22.
- a longitudinal slit 23 is formed in the guide housing 2 to approximately half the height of the guide housing 2.
- Through the slits 23 through an inner space of the guide housing 2 is accessible, in which the sliding profile 3 is arranged vertically. Accordingly, a longitudinal axis 33 of the sliding profile 3 is vertically aligned.
- Fig. 2 the adjusting device 1 is shown from above. It can be seen that the closed end 21 is circular.
- Fig. 3 shows the adjusting device 1 in a cross-sectional view. It can be seen how the sliding profile 3 is arranged in the interior of the guide housing 2.
- the sliding profile 3 comprises a mounting section 34 adjacent to the slitting 23 of the guide housing 2 and a ramp row 31 as a latching row.
- the mounting portion 34 is accessible through the slits 23 from outside the guide housing 2.
- the ramp row 31 comprises five along the longitudinal axis 33 juxtaposed identical ramps 31 first
- Each latching ramp 31 1 has a ramp section rising to the left along the longitudinal axis 33 and a stop section extending at right angles to the longitudinal axis at the end of the ramp section.
- a deactivation ramp 321 of a (de) -activation structure 32 adjoins the ramp row 31.
- the deactivation ramp 321 comprises a ramp section which is shaped analogously to the ramp sections of the ramp ramps 31 1 of the ramp row 31, but extends further to the left.
- the deactivation ramp 321 merges into a support section which extends parallel to the longitudinal axis.
- the displacement profile 3 ends in a stop 35.
- the guide housing 2 is equipped with an opening 24.
- a blocking element 4 is mounted on the guide housing via an axis rod 5 which forms an axis of rotation.
- the blocking element 4 comprises a wedge-shaped in cross-section base portion 41, from its pointed end a spring tongue 42 extends to the left of the base portion 41 upwards.
- a clamping lug 43 is formed on the locking element 4.
- the base portion 41 of the locking member 4 is further provided with a bore through which the axle rod 5 extends.
- the opening 24 of the guide housing 2 comprises a lower edge 241, which has a bevelled area and a nose receptacle. The bevelled area is approximately parallel to the ramp sections of the latching ramps 31 1.
- the nose receptacle is shaped congruent to the clamping nose 43.
- the sliding profile 3 comprises two activating ramps 322 of the (deactivating) activation structure 32.
- the activating ramps 322 are configured approximately parallel to the ramp section of the lowermost latching ramp 31 1 of the ramp row 31 and lie opposite the same ,
- Fig. 4 shows the adjusting device 1 with the blocking element 4 pushed onto the support section of the deactivation ramp 321. The blocking element 4 bears against the stop 35 and accordingly can not continue along the displacement profile to be moved upwards.
- a first end of a displacement of the adjusting device 1 is defined.
- the spring tongue 42 rotates with and the clamping lug 43 jumps behind the edge 241 of the opening 24 of the guide housing 2.
- the clamping lug 43 is located at the edge 241 of the opening 24 and is there held by friction.
- the blocking element 4 is thus rotated in a holding position and is no longer in the effective range of the ramp row 31st
- the sliding profile 3 can thus be moved in a first direction 1 1 down and in a second direction 12 upwards relative to the guide housing 2.
- the adjusting device 1 is in its exemption.
- Fig. 5 the adjusting device 1 is shown, while the blocking element 4 is activated again.
- the sliding profile 3 is moved in the second direction 12 relative to the guide housing completely upwards until the activating ramp 322 contacts the spring tongue 42 of the locking element 4 and pushes to the right.
- the blocking element 4 is rotated in an activating rotation 45 counterclockwise about the axis of rotation, the clamping nose 43 jumps from the edge 241 of the opening in the inner space of the guide housing 2 and the locking element 4 engages in the lowermost latching ramp 31 1 of the ramp row 31st A movement of the sliding profile further in the second direction 12 is blocked.
- the adjusting device 1 is now in the locked position.
- a second end of the adjustment of the actuator 1 is defined.
- Fig. 6 shows the adjusting device in a perspective view, in which a housing half of the guide housing 2 is removed, so that certain components are more visible.
- the stop 35 is formed in two parts. In particular, it has two lateral projections between which the support section of the deactivation ramp extends.
- the cylindrical guide housing 2 that a certain lateral flexibility between the backrest and guide housing 2 is present.
- the sliding profile 3 is simultaneously connected to a backrest of the chair.
- the backrest support is mounted on the mounting portion 34 of the sliding profile 3, which is easily possible through the slits 23 of the guide housing 3.
- a user of the chair can simply pull the backrest upwards.
- the sliding profile 3 moves in the first direction to the guide housing 2.
- the locking element 4 engages in each case in the ramp row 31, so that the backrest can be set in several discrete vertical positions or stepwise. To reduce a height of the backrest, this is pulled by the user to the very top.
- the blocking element 4 is rotated into the holding position and the adjusting device 1 is in the release position.
- the backrest can be moved to the very bottom, where the locking element 4 is rotated from the holding position and again interacts with the ramp row 31 of the sliding profile 3.
- FIG. 7 an embodiment of an inventive backrest device 7 is shown as it is installed in a novel chair.
- the backrest device 7 comprises a backrest 6 with a central leaning portion 61 and two lateral sockets 62 or a left socket 62 and a right further socket 62.
- the two sockets 62 are formed analogously to one another. They each comprise a shuttering 621 and a rotary cylinder 623 arranged therein.
- the rotary cylinders 623 are ring-shaped in cross section and each define a hollow-cylindrical interior of the associated socket 62.
- the backrest device 7 comprises two adjusting devices 1 or a left adjusting device 1 and a right further adjusting device 1.
- the interiors of the sockets 62 each define a corresponding to the outer periphery of the guide housing 2 of the associated adjusting device 1 shaped inner surface.
- the formwork 621 of the sockets 62 are each with the guide housing
- the leaning portion 61 is shaped to support a back of a user of the chair. In particular, it is curved or bent to receive the back seen from above. In addition, it is made of an elastic material that allows a soft flexible reception of the back.
- the leaning portion 61 If the leaning portion 61 is relieved again, it moves through its elasticity back to the basic position of the leaning 61 'back. In this case, the rotary cylinder 623 of the sockets 62 are also rotated back in the defined by the openings 622 circumference 63 to the guide housing 2 of the adjusting devices 1.
- the sliding profiles 3 of the adjusting devices 1 are each fixedly connected to a backrest support of the chair.
- the backrest 6 can be adjusted by means of the adjusting devices 1 to the backrest support. In this way, a height of the backrest 6 of the chair can be adapted to the user of the chair.
- the present disclosure also includes embodiments having any combination of features that are mentioned or shown above or below various embodiments. It also comprises individual features in the figures, even if they are shown there in connection with other features and / or are not mentioned above or below. Also, the alternatives of embodiments and individual alternatives described in the figures and the description may be excluded from the subject matter of the invention or from the disclosed subject matter.
- the disclosure includes embodiments which exclusively comprise the features described in the claims and in the exemplary embodiments as well as those which include additional other features.
- the term “comprise” and derivatives thereof do not exclude other elements or steps. “Also, the indefinite article” a “and derivatives thereof do not exclude a plurality may be satisfied by a unit or a step, respectively.
- the terms “about” and “approximately” in the context of a given numerical value or range may refer to a value or range that is within 20%, within 10%, within 5%, or within 2% of the given value or range.
Landscapes
- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Chairs Characterized By Structure (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP16194439 | 2016-10-18 | ||
PCT/EP2017/076440 WO2018073225A1 (en) | 2016-10-18 | 2017-10-17 | Actuator and backrest device, and piece of seating furniture having one such |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3528667A1 true EP3528667A1 (en) | 2019-08-28 |
EP3528667B1 EP3528667B1 (en) | 2020-09-23 |
Family
ID=57153358
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17791633.5A Active EP3528667B1 (en) | 2016-10-18 | 2017-10-17 | Actuator and backrest device and seat with same |
Country Status (3)
Country | Link |
---|---|
US (1) | US11051621B2 (en) |
EP (1) | EP3528667B1 (en) |
WO (1) | WO2018073225A1 (en) |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6343840B1 (en) * | 2001-05-18 | 2002-02-05 | Yi Chun Enterprise Ltd. | Height adjustment mechanism for chair backrest or arm |
US20030214166A1 (en) * | 2002-05-15 | 2003-11-20 | Schambre John E. | Adjustable seatback assembly |
TWM321735U (en) | 2007-02-06 | 2007-11-11 | Shuen Huang | Height adjustment mechanism of chair back |
DE102009014777B4 (en) | 2009-03-25 | 2017-03-30 | Wilkhahn Wilkening + Hahne Gmbh + Co. Kg | adjustment |
US20110215623A1 (en) * | 2010-03-04 | 2011-09-08 | Hsuan-Chin Tsai | Height-Adjusting Assembly for Office Chair Backrest |
US8579376B2 (en) * | 2011-02-01 | 2013-11-12 | Ching-Ming Chen | Device for adjusting the height of the backrest of an office chair |
DE102012219206B4 (en) | 2012-10-22 | 2017-10-26 | Sedus Stoll Ag | Dorsokinetic backrest of a chair, seating |
-
2017
- 2017-10-17 EP EP17791633.5A patent/EP3528667B1/en active Active
- 2017-10-17 US US16/342,938 patent/US11051621B2/en active Active
- 2017-10-17 WO PCT/EP2017/076440 patent/WO2018073225A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
EP3528667B1 (en) | 2020-09-23 |
WO2018073225A1 (en) | 2018-04-26 |
US11051621B2 (en) | 2021-07-06 |
US20200205572A1 (en) | 2020-07-02 |
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