EP3741257A1 - Dispositif de verrouillage - Google Patents

Dispositif de verrouillage Download PDF

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Publication number
EP3741257A1
EP3741257A1 EP20000181.6A EP20000181A EP3741257A1 EP 3741257 A1 EP3741257 A1 EP 3741257A1 EP 20000181 A EP20000181 A EP 20000181A EP 3741257 A1 EP3741257 A1 EP 3741257A1
Authority
EP
European Patent Office
Prior art keywords
locking
component
chair
locking component
actuating element
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.)
Pending
Application number
EP20000181.6A
Other languages
German (de)
English (en)
Inventor
Hermann Bock
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.)
Bock 1 GmbH and Co KG
Original Assignee
Bock 1 GmbH and Co KG
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 Bock 1 GmbH and Co KG filed Critical Bock 1 GmbH and Co KG
Publication of EP3741257A1 publication Critical patent/EP3741257A1/fr
Pending legal-status Critical Current

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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
    • A47C1/031—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
    • 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
    • A47C1/03205—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination
    • A47C1/03238—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination by means of peg-and-notch or pawl-and-ratchet mechanism
    • 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
    • A47C7/02—Seat parts
    • A47C7/025—Springs not otherwise provided for in A47C7/22 - A47C7/35
    • A47C7/027—Springs not otherwise provided for in A47C7/22 - A47C7/35 with elastomeric springs
    • 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
    • A47C7/02—Seat parts
    • A47C7/14—Seat parts of adjustable shape; elastically mounted ; adaptable to a user contour or ergonomic seating positions

Definitions

  • the invention relates to a locking device for locking a first component of a chair relative to a second component of the chair.
  • the invention also relates to a chair mechanism for an office or work chair with such a locking device and an office or work chair with such a chair mechanism.
  • synchronous mechanism is understood to mean assemblies in the seat substructure of an office or work chair which ensure a kinematics that is coupled to one another and brings about a certain relative movement of the seat and backrest to one another.
  • the office chair seat which is usually provided with an upholstered seat, is mounted on the seat support.
  • the backrest support which extends backwards in the usual way from the actual synchronous mechanism, carries the backrest of the office chair on an upward extending arm.
  • the locking device according to the invention for locking a first component of a chair relative to a second component of the chair has a first locking component attached or attachable to the first component and a second locking component which engages with the first locking component for the purpose of locking and for the purpose of Unlocking can be disengaged, for which purpose the first locking component and / or the second locking component can be transferred from a locking position into an unlocking position and back while executing a rotary movement.
  • a piece of seating furniture can be provided with a locking device with which a backlash-free locking is possible.
  • a linear guidance of the locking body is no longer needed.
  • the locking body can instead be moved without play.
  • a first component of the chair can thus be locked silently and without annoying rattling noises relative to a second component of the chair, so that there can no longer be any relative movement between the components.
  • Such a locking can optionally take place in situations in which the user does not want the first component to move.
  • the chair mechanism according to the invention for seating furniture is characterized in that such a locking device is used.
  • the chair mechanism can be designed as a synchronous mechanism for providing a correlated seat / backrest movement, or it can have a different construction and function.
  • the seating furniture according to the invention is characterized in that it uses such a chair mechanism.
  • the application of the invention is particularly advantageous in office and work chairs, since these, more than other seating furniture, are equipped with chair components which can be moved relative to one another and whose relative movement to one another should be able to be switched on and off.
  • the first locking component has a plurality of locking openings.
  • a number of four to five locking openings for locking the first component in a corresponding number of positions has been found in the Proven sufficient and beneficial in most cases.
  • the locking openings are arranged in the shape of a circular arc and open in the radial direction.
  • Such a configuration is particularly advantageous if the first component is designed in such a way that it performs a rotary or pivoting movement or generally a rotary movement with respect to the second component.
  • the second locking component has a locking body which can be inserted into one of the locking openings of the first locking component to produce the locking and can be removed from this locking opening to release the locking. It when the locking body is designed as a bolt is particularly advantageous. In particular, together with groove-shaped locking openings extending parallel to the pivot axis of the first component, locking openings that are very secure from a mechanical point of view result.
  • the second locking component is designed as a pivotably mounted component.
  • a linear guide for the locking body it is now only necessary to make a bore for receiving a pivot bolt or the like in the pivotably mounted component. Bores can be carried out particularly precisely, especially in components made of metal. Undesired component movement caused by play in the component when the second locking component is pivoted or in the locked position can therefore be excluded.
  • the locking device comprises an actuating element which is operatively connected to the second locking component and which can be changed in position for actuating the second locking component.
  • the operative connection between the actuating element and the second locking component is established by means of a transmission element engaging both the actuating element and the second locking component.
  • a transmission element engaging both the actuating element and the second locking component.
  • a movement of the actuating element or a movement component of such a movement can be transmitted to the second locking component with the aid of the transmission element.
  • the transmission element is a spring element, in particular if the spring element is a spring wire.
  • the actuating element can assume at least two mutually different position states.
  • the actuating element is designed in such a way that, when it is brought into a first positional state, it transfers the second locking component into a locking position or into an expected position preparing the locking position.
  • the actuating element is in the first Position state, it secures the locking position of the second locking component.
  • the second locking component can then be transferred from the expected position into the locking position in the event of a movement of the first locking component that exceeds a minimum.
  • the movement of the first locking component which transfers the second locking component from the expected position to the locking position when a minimum dimension is exceeded, is preferably a rotational movement, namely the second rotational movement required in this special case for the locking to take place during the first rotational movement of the second locking component has already taken place.
  • both rotary movements can also take place at the same time.
  • the actuating element is designed in such a way that, when it is brought into a second position, it transfers the second locking component into an unlocked position. If the actuating element is in the second position, it secures the unlocked position of the second locking component.
  • the second locking component has a stop body against which a corresponding stop element of the first component strikes in order to limit its component movement relative to the second component. This is preferably done Strike regardless of whether the actuating element is in the first position or in the second position.
  • the actuating element when it is brought into a third position, can transfer the second locking component into a second, modified unlocking position in which the stop element does not strike the stop body more is possible.
  • the second locking component can be moved relative to the first component beyond the stop position. If the first component is the backrest support of a chair mechanism, the backrest support can thus be pivoted beyond the horizontal seating position into a seat tilt position in which the seat is slightly tilted forward when viewed in the longitudinal direction of the seat. In this way, independent of the other functionality of the mechanical components of the chair mechanics, additional adjustability of the chair mechanics can be achieved and the seat tilt position can be switched on and off.
  • the switching on and off of the seat tilt position can also be implemented by means of the rotating actuating element, so that there is a uniform operating concept for locking the backrest pivoting as well as for the seat tilting position. In particular, no additional control elements are required.
  • the actuating element can only be transferred from the first position state into the second position state and back. If a third position state is provided, the actuating element according to a preferred embodiment of the invention can only be transferred from the second position state into the third position state and back.
  • This embodiment provides a logical operating concept that is easy to grasp for the user and by means of which incorrect operations can be excluded which could possibly result in malfunctions of the locking device or the chair mechanism.
  • the position of the actuating element in its position states can be fixed by means of a spring-loaded inhibiting device.
  • a suitably shaped spring element provided with a latching nose engages in latching recesses provided on the actuating element.
  • the actuating element is designed as a pivot lever. It is particularly advantageous if the pivot axis about which the pivot lever can be pivoted is spaced apart from the pivot axis of the second locking component.
  • the first locking component and the second locking component are made of a metallic material, preferably steel.
  • the central longitudinal axis of the locking body runs parallel to the axis of rotation of the second locking component and / or the axis of rotation of the second locking component runs parallel to the pivot axis of the actuating element. If the first component can be pivoted about an axis of rotation relative to the second component, it has proven to be particularly advantageous if the named axes of the second locking component and the actuating element run parallel to this component axis of rotation.
  • the seating furniture is an office or work chair
  • the first component is a backrest support of a chair mechanism of the office or work chair
  • the second component is a base support of the chair mechanism that interacts with the backrest support.
  • a synchronous mechanism 1 is provided for a correlated seat / backrest movement of an office chair, with a base support 3, essentially a base support 3 which can be placed on a chair column 2 by means of a conical mount (not shown) frame-shaped seat support 4 and a backrest support 5, which is forked in plan view and whose cheeks 6 are arranged on both sides of the base support 3.
  • the seat support 4 is provided for receiving or mounting a preferably upholstered seat (not shown). The assembly takes place with the help of fastening elements not shown in the usual way.
  • a backrest not shown in detail, is attached to the backrest support 5 and is height-adjustable in modern office chairs. The backrest can also be connected to the backrest support 5 in one piece.
  • the entire synchronous mechanism 1 is constructed mirror-symmetrically with respect to its central longitudinal plane, as far as the actual kinematics are concerned. In this respect, construction elements of the actual pivot mechanism that are present in pairs on both sides are always to be assumed.
  • Fig. 1 shows the basic position of the synchronizing mechanism 1 in which the seat support 4 assumes an essentially horizontal position.
  • Fig. 3 shows the synchronous mechanism 1 in a position of the backrest support 5 that is pivoted maximally backwards.
  • Fig. 5 shows the synchronous mechanism 1 in a seat inclination position, in which the seat support 4 is inclined forwards in the longitudinal direction 7 of the seat beyond the horizontal basic position.
  • the backrest support 5, which can be pivoted in the pivoting direction 8, is directly articulated about a first transverse axis 9 with the base support 3 with its cheeks 5 extending in the direction of the front area 10 of the synchronizing mechanism 1, which defines the main axis of rotation of the synchronizing mechanism 1.
  • the pivoting takes place, as seen in the longitudinal direction 7 of the seat, to the rear and down.
  • the backrest support 5 forms a second transverse axis 13 with the rear region of the seat support 4 articulated.
  • the front area of the seat support 4 is articulated to the base support 3, forming a further transverse axis 14.
  • the backrest support 5 takes the seat support 4 back and down with it.
  • the base support 3 remains stationary. This pivoting movement can be locked by means of the locking device 15 according to the invention, see Figures 8 and 9 .
  • the locking device 15 for locking the backrest support 5 relative to the base support 3 has a first locking component 16 attached to the backrest support 5 with a plurality of locking openings 17 and a second locking component 18 pivotably attached to the base support 3, which is connected to the first locking component 16 for the purpose the lock is engaged and disengaged for the purpose of unlocking.
  • the second locking component 18 be transferred from a locking position to an unlocking position and back while executing a rotary movement.
  • the locking openings 17 are provided in the first locking component 16, which is designed as an arcuate toothed element. These locking openings 17 are designed as grooves running transversely to the pivot axis 9 of the backrest support 5, which are arranged on an arc of a circle. In relation to this circular arc, the grooves 17 point in the radial direction, starting from the groove base in the direction of the groove opening.
  • the locking openings 17 are provided by a suitably designed steel component which is overmolded by plastic injection molding during the manufacture of the backrest support 5 and which, viewed in the longitudinal direction 7, is attached to the front head end of the backrest support 5. More precisely, the steel component is provided at the free end of one of the two cheeks 6 of the backrest support 5 and extends with its locking openings 17 in the direction of the front area 10 of the synchronizing mechanism 1.
  • the second locking component 18 has a locking body 19 in the form of a bolt, which can be inserted into one of the locking openings 17 to produce the locking and can be removed from this locking opening 17 to release the locking.
  • the second locking component 18 has two side parts 22 spaced apart from one another, between which the locking bolt 19 is fastened.
  • the second locking component 18 is designed as a component that is pivotably hinged to the base support 3 with its fastening end 23, for which purpose both side parts 22 have bores 24 at the fastening end 23 for receiving a pivot pin 25, the position of which the axis of rotation 26 of the second locking component 18 for pivoting one Locking position in an unlocking position and back.
  • the second locking component 18, including the locking bolt 19 and side parts 22, is made of steel.
  • the second locking component 18 is articulated in the front area 10 of the chair mechanism 1 on the base support 3 so that it can assume a locking position while executing a rotational movement, in which the locking bolt 19 engages in a locking opening 17, which due to a rotational movement of the backrest support 5 accordingly a certain The pivot position of the backrest support 5 is positioned.
  • the second locking component 18 is placed such that the movement paths of the first and second locking components 16, 18 or locking opening 17 and locking body 19 overlap, thereby forming defined locking positions of the locking device 15.
  • the bolt 19 is arranged in the second locking component 18 in such a way that its central longitudinal axis 21 runs parallel to the axis of rotation 26 of the second locking component 18.
  • the locking device 15 comprises a position-changeable, i. E. In operative connection with the second locking component 18. its position relative to the base support 3 changing actuating element 28 for actuating the second locking component 18.
  • the operative connection between the actuating element 28 and the second locking component 18 is established by means of a transmission element 29 engaging both the actuating element 28 and the second locking component 18, which is a Movement of the actuating element 28 transmits to the second locking component 18.
  • the transmission element 29 is a spring element which, for reasons of energy storage when the spring is acted upon, is advantageously designed in the form of an approximately semicircular bent spring wire.
  • the spring element 29 is connected to a driver element 30 on the side of the second locking component 18.
  • the driver element 30 is one above the locking bolt 19 in the direction of the free end of the second locking component 18 between the two Side parts 22 attached driver pin, which is arranged parallel to the locking pin 19.
  • the end of the spring wire 29 assigned to the second locking component 18 is attached to the second locking component with its curved end piece in a captive manner, enclosing the driver pin 30.
  • the end of the wire can also be inserted into a transverse bore in the driving pin 30 (not shown).
  • the other end of the spring wire 29, likewise with a bent end piece, is held captively in a longitudinal bore of the actuating element 28 attached to the free end.
  • the actuating element 28 is designed as a pivot lever which is pivotably mounted on the base carrier 3 with its stationary fastening end. It is arranged in front of the second locking component 18 as seen in the longitudinal direction 7 of the seat, so that the second locking component 18 is located between the backrest support 5 and the actuating element 28 as seen in the longitudinal direction 7 of the seat.
  • the pivot axis 31 formed by the articulated connection of the actuating element 28 to the base support 3 is spaced apart from the pivot axis 26 of the second locking component 18.
  • Actuating element 28 and second locking component 18 are each arranged in such a way that their axes of rotation 31, 26 are located at the respective lower, non-changeable end 23 and their changeable free ends 11, 20, on which the spring element 29 engages, are in each case when the locking device 15 is operated Move in the same direction, that is to say either to the rear as seen in the longitudinal direction 7 of the seat to take up the locking position or to the front to take the unlocked position.
  • the actuating element 28 can assume three mutually different position states.
  • the position of the actuating element 28 in its position states can be fixed by means of a spring-loaded inhibiting device 32.
  • a spring element designed for this purpose and provided with a locking lug at the free end is fastened with its fixed end to the base support 3, for example clamped.
  • the locking lug engages in one of three locking recesses 35 provided on the actuating element 28 and arranged radially to the axis of rotation 31 separately from one another, as in Figs. 1 to 5 illustrated, each latching recess 35 being assigned to a position state of the actuating element 28. It can be determined by the strength of the spring element 34 how great the force must be when rotating the actuating element 28 so that it moves from one position to an adjacent position.
  • the actuating element 28 is designed in such a way that, when it is brought into a first position, it transfers the second locking component 18 into a locking position or into an expected position preparing the locking position.
  • Fig. 1 the synchronous mechanism 1 is shown in the non-pivoted basic position with a horizontal seat arrangement, the pivoting function being locked and the actuating element 28 being in the first position.
  • the expected position is assumed whenever the locking body 19 is not positioned precisely opposite a locking opening 17 during an intended locking, i.e. when the actuating element 28 is in the first position, and therefore direct insertion into the locking opening 17 is not possible is.
  • the second locking component 18 is from the expected position in the
  • the locking position can be transferred in the event of a movement of the first locking component 16 exceeding a minimum. More precisely, the locking body 19 is automatically transferred into the locking opening 17 due to the action of the spring by the transmission element 28 as soon as the body 19 and the opening 17 are placed exactly opposite one another. This typically occurs when the backrest support 5 moves by a minimum in the pivot direction 8 or against the pivot direction 8. After the locking position has been assumed, the backrest support 5 cannot be pivoted any further.
  • the actuating element 28 is designed in such a way that, when it is brought into a second position, it transfers the second locking component 18 into an unlocked position.
  • Fig. 2 the synchronous mechanism 1 is shown in the non-pivoted basic position with a horizontal seat arrangement, the pivot function being unlocked and the actuating element 28 being in the second position.
  • the backrest support 5 can be pivoted.
  • the backrest support 5 can be locked in the pivoted position by a corresponding actuation of the actuating element 28 so that it assumes its first position, as in FIG Fig. 3 shown.
  • the locking bolt 19 engages in the lowermost locking opening 17 of the first locking component 16.
  • the second locking component 18 has a stop body 37 against which a corresponding The stop element 38 of the backrest support 5 strikes in order to limit its component movement relative to the base support 3.
  • a stop is provided in order to limit the forward movement of the backrest support 5 in the longitudinal direction 7 of the seat. The impact occurs regardless of whether the actuating element 28 is in the first position or in the second position.
  • the stop element 38 of the backrest support 5 is a stop bracket attached to the side of the cheek 6 of the backrest support 5 near the first locking component 16.
  • the corresponding counterpart, the stop body 37 of the second locking component 18, is provided by a step provided in the two flat side parts 22 of the second locking component 18.
  • Fig. 4 is the synchronous mechanism 1, as in Fig. 1 , shown in the non-pivoted basic position, the seat support 4 being arranged horizontally and the backrest support 5 abutting against the second locking component 18 in the locked state.
  • the actuating element 28 If the actuating element 28 is now brought into a third position in which the actuating element 28 with its free end 27 inclines far forward in the longitudinal direction 7 of the seat, it takes the second locking component 18 with it into a second, modified unlocking position in which the second locking component 18 is located also moved so far forward that the stop element 38 can no longer strike the stop body 37, see FIG Fig. 5 .
  • the second locking component 18 is in the modified unlocking position and the backrest support 5 is relative to the base support 3 via the in Fig. 4 Stop position shown also movable, so that over the horizontal A seat inclination position can also be assumed, in which both the seat support 4 and the backrest support 5 are inclined slightly forward when viewed in the longitudinal direction 7 of the seat.
  • the actuation element 28 is operated with the aid of a handwheel or the like (not shown) with which the actuation element 28 is rotated about its axis of rotation 31.
  • the handwheel is connected to the axis of rotation 31 via a coupling piece 39.
  • the particularly simple construction of the locking device 15 according to the invention is i.a. also possible because all axes of all components involved run parallel to one another, in particular the central longitudinal axis 21 of the locking body 19 and that of the corresponding locking openings 17, the pivot axis 26 of the second locking component 18 and the pivot axis 31 of the actuating element 28.
  • a particularly simple design of the synchronous mechanism 1 is among others also possible because all the rotation and pivot axes of the locking device 15 run parallel to the main pivot axis 9.
  • the locking device 15 according to the invention can also be used in other embodiments of chair mechanisms, for example with simple rocking mechanisms, and also for locking other chair or seating furniture components.

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  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
EP20000181.6A 2019-05-21 2020-05-11 Dispositif de verrouillage Pending EP3741257A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019113585.0A DE102019113585A1 (de) 2019-05-21 2019-05-21 Verriegelungseinrichtung

Publications (1)

Publication Number Publication Date
EP3741257A1 true EP3741257A1 (fr) 2020-11-25

Family

ID=70682564

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000181.6A Pending EP3741257A1 (fr) 2019-05-21 2020-05-11 Dispositif de verrouillage

Country Status (3)

Country Link
EP (1) EP3741257A1 (fr)
CN (1) CN111972896A (fr)
DE (1) DE102019113585A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US711412A (en) * 1902-01-13 1902-10-14 Joseph Edward Archambeault Adjustable chair.
US4943115A (en) * 1986-09-02 1990-07-24 Girsberger Holding Ag Swivel chair with adjustable back rest

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011101876B4 (de) * 2011-05-12 2012-11-22 Keiper Gmbh & Co. Kg Verriegelungssystem für einen Fahrzeugsitz, insbesondere Kraftfahrzeugsitz, zur Verriegelung an einer Fahrzeugstruktur eines Fahrzeugs
DE102012015288B4 (de) * 2012-07-31 2014-04-10 Johnson Controls Gmbh Entriegelungseinheit für einen Fahrzeugsitz und Fahrzeugsitz

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US711412A (en) * 1902-01-13 1902-10-14 Joseph Edward Archambeault Adjustable chair.
US4943115A (en) * 1986-09-02 1990-07-24 Girsberger Holding Ag Swivel chair with adjustable back rest

Also Published As

Publication number Publication date
CN111972896A (zh) 2020-11-24
DE102019113585A1 (de) 2020-11-26

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