EP4440382A1 - Höhenverstellmechanismus für ein bewegliches stützteil eines sitzmöbels und sitzmöbel - Google Patents
Höhenverstellmechanismus für ein bewegliches stützteil eines sitzmöbels und sitzmöbelInfo
- Publication number
- EP4440382A1 EP4440382A1 EP22839137.1A EP22839137A EP4440382A1 EP 4440382 A1 EP4440382 A1 EP 4440382A1 EP 22839137 A EP22839137 A EP 22839137A EP 4440382 A1 EP4440382 A1 EP 4440382A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- adjustment mechanism
- bracket
- guide rod
- height adjustment
- support part
- 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.)
- Withdrawn
Links
Classifications
-
- 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—Supports for the head or the back
- A47C7/38—Supports for the head or the back for the head, e.g. detachable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/80—Head-rests
- B60N2/806—Head-rests movable or adjustable
- B60N2/809—Head-rests movable or adjustable vertically slidable
- B60N2/829—Head-rests movable or adjustable vertically slidable characterised by their adjusting mechanisms, e.g. electric motors
Definitions
- the present invention relates to a height adjustment mechanism for a movable support part of a piece of seating furniture according to the preamble of claim 1 and a piece of seating furniture according to the preamble of claim 11 .
- height adjustment mechanisms for headrests are known, for example, from DE10130694B4, DE102018101721A1 or DE202018106444U1.
- the height adjustment mechanisms for a headrest described in these documents have respective support part brackets which are fixed to respective bracket supports.
- the height of the bracket supports can be adjusted by a motor via threaded rods or via racks and gears.
- the object of the present invention is to provide a height adjustment mechanism for a movable support part of a piece of seating furniture which is simple in construction and can be produced inexpensively.
- the height adjustment mechanism according to the invention for a movable support part of a piece of seating furniture has a guide rod fastened to a back part of the piece of seating furniture and a bracket support that is slidably guided on the guide rod in the longitudinal direction of the guide rod. At least one support part bracket is fastened to the bracket carrier.
- a drive unit with an electric motor and a drive shaft that can be driven by the electric motor and with which the bracket carrier can be moved along the guide rod by a motor is fastened to the back part of the chair.
- a flexible traction drive which is coupled to the bracket carrier and is driven by the drive shaft, is fastened to the guide rod.
- Such a traction mechanism provides a height adjustment mechanism that is simple and inexpensive to produce and with which the height of the headrest on a piece of seating furniture can be adjusted in a simple manner.
- the traction means is designed as a cable drive.
- a belt drive or a chain drive is also conceivable as a traction mechanism.
- Such a rope drive is a particularly simple, relatively maintenance-free variant of such a traction drive.
- spaced-apart fixing elements for the detachable fixing of free ends of hanger rods of the support part hanger are arranged on the hanger carrier.
- each of the fixing elements has a spring housing with a spring element fixed therein and an insertion funnel, through which the respective free end of one of the hoop rods of the support part hoop, which is designed with a radial groove, can be inserted into the spring housing and can be locked with the spring element with a predetermined spring force .
- This protection against pinching consists in the fact that when the headrest approaches the upper edge of the backrest, a part of a person's body located between these components can only be compressed with a small force that does not endanger injury, since if a predetermined pressure force is exceeded, the spring elements of the fixing elements release the bar rods of the support part bracket thereby reliably avoiding the body part being crushed.
- the hoop bars are guided in sliding guide sleeves which are inserted into receptacles in the back part.
- the support part bracket can be guided reliably parallel to the longitudinal axis of the guide rod.
- a first driver is arranged on a traction mechanism of the traction mechanism drive and is fixed in a driver receptacle of the bracket carrier.
- the driver can be designed, for example, in the form of a cylinder bolt.
- cable ends of a traction means designed as a cable of the traction drive designed as a cable drive have second carriers which are fixed to a cable wheel of the cable drive.
- At least one limit switch which is electrically coupled to the electric motor is arranged on the guide rod and serves to limit a travel path of the bracket carrier along the guide rod.
- Two limit switches are also advantageous in order to limit the movement of the bracket carrier in both end positions.
- a circuit board is attached to the guide rod, on which at least one of the limit switches can be arranged in variable positions.
- the piece of seating furniture according to the invention has a seat surface and a backrest arranged at an angle to the seat surface with a back part accommodated in this and a headrest. Furthermore, the seating furniture has a like Height adjustment mechanism described above for adjusting the height of the headrest relative to the back part.
- FIG. 1 shows an isometric representation of an embodiment variant of a height adjustment mechanism according to the invention with a headrest arranged on a back part in a height-adjustable manner
- FIG. 2 shows a representation of the height adjustment mechanism corresponding to FIG. 1 from a different perspective
- FIG. 3 shows a further isometric representation of the headrest arranged on the back part in a lowered position of the headrest
- FIG. 4 shows an isometric exploded view of the structure made up of the back part, headrest and height adjustment mechanism
- Figure 5 is an isometric detail view of the height adjustment mechanism
- Figure 6 is an exploded view of the height adjustment mechanism shown in Figure 5
- Figure 7 is an isometric view of a hanger bracket slidably mounted on a guide rod in the lowered state
- FIG. 10 is a plan view of a hanger carrier fastened to the guide rod in the lowered state with limit switches and circuit board arranged on the guide rod,
- FIG. 11 shows a representation corresponding to FIG. 10 with the bracket carrier arranged in the raised position, triggering the upper limit switch
- FIG. 12 an isometric enlargement of a detail of the height adjustment mechanism to show the attachment of the hanger rods of the support part hanger to fixing elements of the hanger carrier,
- FIG. 13 is a plan view of a detail of FIG. 12 with a cut fixing element showing a hanger bar rusted by a spring element,
- FIG. 14 and 15 schematic isometric representations of a piece of seating furniture with a backrest and a headrest adjustably arranged thereon in a lowered (FIG. 14) or raised (FIG. 15) position and
- FIG. 16 and 17 are schematic isometric representations of an alternative embodiment of a piece of seating furniture with an adjustable backrest in a lowered (FIG. 16) or raised (FIG. 17) position.
- top, bottom, left, right, front, rear, etc. refer exclusively to the exemplary representation and position of the headrest, back part, guide rod, support part bracket, drive unit and the like selected in the respective figures. These terms are not to be understood as limiting, i.e. these references can change due to different working positions or the mirror-symmetrical design or the like.
- the reference numeral 1 designates a movable support part, designed as a headrest, of a piece of seating furniture 100, which is fastened to a back part 2 of seating furniture 100 in a height-adjustable manner by means of an electric motor by means of a drive unit 6 of a height adjustment mechanism.
- the height adjustment mechanism which is shown as an exploded view in FIG.
- the guide rod 3 has a guide section 31 on which a bracket carrier 4 is guided in a displaceable manner.
- the hanger carrier 4 is guided in the longitudinal direction L of the guide rod 3 on this guide rod 3 so as to be displaceable.
- a support part bracket 5 is fastened to the bracket carrier 4, as is shown in FIGS.
- the support part bracket 5 essentially has two bracket rods 51 running parallel to one another, the transverse connection of which is designed as a preferably upholstered headrest 1 . Free ends 52 of the hanger rods 51 are fixed to the hanger carrier 4 via fixing elements 9, as will be explained in more detail below.
- a drive unit 6 of the height adjustment mechanism is attached to the back part 2 of the chair.
- the drive unit 6 has an electric motor 61 and a drive shaft 62 that can be driven by it.
- a traction mechanism coupled to the hanger carrier 4 and driven by the drive shaft 62 is fastened to the guide rod 3, as can be seen in FIGS.
- the traction drive is designed as a cable drive 7 in the embodiment variant shown in the figures.
- the cable drive 7 consists essentially of two cable wheels 71, 72.
- a first cable wheel 71 is coupled to the drive shaft 62 of the drive unit 6 in order to rotate the cable wheel 71 about its axis of rotation.
- the two rope wheels 71 , 72 are connected to one another via a rope 73 .
- the cable ends of the cable 73 second drivers 75 are arranged, which are fixed in receptacles provided for this purpose in the first cable wheel 71 of the cable drive 7 .
- a first carrier 74 is fastened to the cable 73 and is fixed in a carrier receptacle 43 of the bracket carrier 4 .
- This first driver 74 is used to transfer the movement of the cable 73 to the bracket carrier 4, which, depending on the direction of movement of the cable 73 along the guide section 31 of the guide rod 3, can be adjusted between a lower setting shown in Figures 3, 7 and 8a to 8c and one in Figures 1, 2 and 9a to 9c shown upper end position along the guide rod 3 is movable.
- two limit switches 81 electrically coupled to the electric motor 61 are arranged on the guide rod 3, which limit a travel path of the bracket carrier 4 along the Guide rod 3 are used.
- the two limit switches 81 are preferably attached to a circuit board 8 which is attached to the guide rod 3 .
- the limit switches 81 can preferably be arranged in variable positions on this circuit board 8 .
- two contact elements designed as plugs 82, 83, are arranged at one end of the circuit board 8 and serve to transmit signals between the limit switch 81 and the motor 61 of the drive unit 6.
- the stirrup support 4 essentially consists of a transverse plate 41, from the ends of which extend bent support tongues 42, which are essentially aligned in the XY plane.
- One of the fixing elements 9 is fastened on the upper side of each of these support tongues 42 and serves to fix the hanger rods 51 of the support part hanger 5 .
- the support tongues 42 have bores 44 for this purpose.
- the fixing elements 9 are held in these bores 44 via screws 18 .
- the free ends 52 of the hanger rods 51 of the support part hanger 5 are arranged in the fixing elements 9 so that they can be removed in a simple manner in order to prevent pinching on the height adjustment mechanism.
- each of the fixing elements 9 has a spring housing 91 with a spring element 93 held therein, for example in the form of a wire clamping spring, and an insertion funnel 92.
- the free end 52 of the respective bracket rod 51 is inserted through the insertion funnel 92 into the spring housing 91.
- a chamfer 54 facilitates the insertion of the free end 52 of the hanger bar 51 into the insertion funnel 92.
- the free ends 52 of the hanger rods 51 each have a radial groove 53 into which the spring element 93 engages with a predetermined spring force after the free ends 52 of the hanger rods 51 have been inserted into the spring housing 91 and the hanger rods 51 are thus locked.
- the spring element 93 can slide out of the radial groove 53 at the free end 52 of the bar rod 51 and thus release the headrest 1 again.
- the hanger rods 51 of the support part hanger 5 are guided in sliding guide sleeves 10, which are inserted in receptacles 23 in the back part 2, as is shown in FIGS. 1, 2, 4 and 12, for example.
- the respective end of the sliding guide sleeves 10 protruding upwards from the back part 2 is covered by a covering cap 56 threaded onto the hanger rod 51 .
- the receptacles 23 in the back part 2 are preferably provided in an upper cross brace 22 of the back part 2 .
- the back part 2 itself essentially consists of two side walls 21, the upper cross brace 22 and one or more lower cross brace(s) 25.
- a fastening bracket 13 is preferably fastened to the upper cross brace 22 and serves to hold the drive unit 6 and the guide rod 3 .
- the mounting bracket 13 is fixed by means of screws 17 through holes 24.
- the mounting bracket 13 has holes 19 .
- the guide rod 3 has a fastening section 32 which is bent over at an angle to the guide section 31 and which is fastened to the fastening bracket 13 , in particular screwed or riveted.
- bearing bores 34 , 35 are provided in the area of the fastening section 32 of the guide rod 3 , which are used for the rotary bearing of the two cable wheels 71 , 72 .
- the upper rope wheel 71 is fastened to the bearing bore 34 using a rivet 16 and the lower rope wheel 72 is fastened to the bearing bore 35 using a rivet 15, as can be seen in FIG.
- the guide rod 3 and the components attached to it are also preferably covered by a cover frame 14 .
- the slidable guidance of the bracket carrier 4 on the guide rod 3 can be effected by means of a clip or a carriage formed on the transverse plate 41 of the bracket carrier 4 .
- the bracket carrier 4 is coupled to the guide rod 3 via a carriage 11, which, viewed in the horizontal plane, encompasses the guide section 31 of the guide rod 3 at least from three sides and is connected to the bracket carrier 4 via screws or rivets 12.
- Figures 14 and 15 show seating furniture 100, with a seat surface 101, a backrest 102 arranged at an angle thereto, in which the back part 2 is accommodated and on which the support part bracket 5 for holding the support element arranged above the back part 2, shown here in an embodiment is attached as a headrest 1.
- the support part bracket 5 can be motor-adjusted in its height position relative to the upper edge of the back part 2 together with the headrest 1 by a height adjustment mechanism as described above.
- Figure 14 shows while a lowered position of the headrest 1, while Figure 15 shows a raised position of the headrest 1.
- FIG. 16 shows a lowered position of the upholstery part 103′
- FIG. 17 shows a raised position of the upholstery part 103′.
- the height adjustment mechanisms and seating furniture according to the invention also cover use in motor vehicles.
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021131631.6A DE102021131631A1 (de) | 2021-12-01 | 2021-12-01 | Höhenverstellmechanismus für ein bewegliches Stützteil eines Sitzmöbels und Sitzmöbel |
| PCT/EP2022/083577 WO2023099433A1 (de) | 2021-12-01 | 2022-11-29 | Höhenverstellmechanismus für ein bewegliches stützteil eines sitzmöbels und sitzmöbel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4440382A1 true EP4440382A1 (de) | 2024-10-09 |
Family
ID=84887930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22839137.1A Withdrawn EP4440382A1 (de) | 2021-12-01 | 2022-11-29 | Höhenverstellmechanismus für ein bewegliches stützteil eines sitzmöbels und sitzmöbel |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20250024950A1 (de) |
| EP (1) | EP4440382A1 (de) |
| CN (1) | CN118338816A (de) |
| DE (1) | DE102021131631A1 (de) |
| WO (1) | WO2023099433A1 (de) |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3471198A (en) * | 1967-10-16 | 1969-10-07 | Lear Siegler Inc | Headrest assembly |
| DE7920475U1 (de) | 1979-07-18 | 1979-11-08 | P.A. Rentrop, Hubbert & Wagner Fahrzeugaustattungen Gmbh & Co Kg, 3060 Stadthagen | Hoehenverstellbare kopfstuetze eines kraftfahrzeugsitzes |
| DE2948224C2 (de) * | 1979-11-30 | 1986-11-27 | Keiper Automobiltechnik Gmbh & Co Kg, 5630 Remscheid | Höhenverstellbare Kopfstütze für die Rückenlehne eines Sitzes |
| DE3130780A1 (de) * | 1981-08-04 | 1983-03-03 | Keiper Automobiltechnik Gmbh & Co Kg, 5630 Remscheid | "hoehenverstellvorrichtung fuer kopfstuetzen" |
| US5131720A (en) * | 1990-09-25 | 1992-07-21 | Tachi-S Co., Ltd. | Headrest device |
| DE19857387C1 (de) * | 1998-12-12 | 2000-04-13 | Daimler Chrysler Ag | Vorrichtung zur Koppelung einer Kopfstütze mit einem Sicherheitsgurtsystem |
| JP4432222B2 (ja) | 2000-06-27 | 2010-03-17 | アイシン精機株式会社 | ヘッドレスト装置 |
| DE10160929B4 (de) * | 2001-12-12 | 2005-08-11 | Faurecia Autositze Gmbh & Co. Kg | Rückenlehne eines Kraftfahrzeugsitzes mit höhenverstellbarer Kopfstütze |
| DE202007015811U1 (de) * | 2007-11-13 | 2009-03-26 | Dewert Antriebs- Und Systemtechnik Gmbh | Möbelantrieb |
| DE102018101721A1 (de) | 2018-01-25 | 2019-07-25 | Ferdinand Lusch Gmbh & Co. Kg | Sitzmöbel mit höhenverstellbarem Kopfteil |
| CN108836004A (zh) | 2018-07-27 | 2018-11-20 | 东莞市伟宏五金塑胶制品有限公司 | 头枕同步升降装置 |
-
2021
- 2021-12-01 DE DE102021131631.6A patent/DE102021131631A1/de active Pending
-
2022
- 2022-11-29 EP EP22839137.1A patent/EP4440382A1/de not_active Withdrawn
- 2022-11-29 CN CN202280080347.4A patent/CN118338816A/zh active Pending
- 2022-11-29 US US18/715,275 patent/US20250024950A1/en active Pending
- 2022-11-29 WO PCT/EP2022/083577 patent/WO2023099433A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CN118338816A (zh) | 2024-07-12 |
| WO2023099433A1 (de) | 2023-06-08 |
| US20250024950A1 (en) | 2025-01-23 |
| DE102021131631A1 (de) | 2023-06-01 |
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