EP3639700A1 - Coussin de meuble d'assise, procédé de fabrication de coussin de meuble d'assise, dispositif de coussin de meuble d'assise, procédé de fabrication d'un dispositif de coussin de meuble d'assise, chaise de bureau ou de conférence - Google Patents

Coussin de meuble d'assise, procédé de fabrication de coussin de meuble d'assise, dispositif de coussin de meuble d'assise, procédé de fabrication d'un dispositif de coussin de meuble d'assise, chaise de bureau ou de conférence Download PDF

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Publication number
EP3639700A1
EP3639700A1 EP19200165.9A EP19200165A EP3639700A1 EP 3639700 A1 EP3639700 A1 EP 3639700A1 EP 19200165 A EP19200165 A EP 19200165A EP 3639700 A1 EP3639700 A1 EP 3639700A1
Authority
EP
European Patent Office
Prior art keywords
seat
base body
undercut
cushion
backrest
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
EP19200165.9A
Other languages
German (de)
English (en)
Other versions
EP3639700B1 (fr
Inventor
Guiseppe ARGIOLU
Dominik Sattler
Klaus Maier
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.)
Sedus Stoll AG
Original Assignee
Sedus Stoll AG
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 Sedus Stoll AG filed Critical Sedus Stoll AG
Publication of EP3639700A1 publication Critical patent/EP3639700A1/fr
Application granted granted Critical
Publication of EP3639700B1 publication Critical patent/EP3639700B1/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
    • A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
    • A47C31/02—Upholstery attaching means
    • A47C31/023—Upholstery attaching means connecting upholstery to frames, e.g. by hooks, clips, snap fasteners, clamping means or the like
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
    • A47C31/02—Upholstery attaching means

Definitions

  • the present invention relates to a seat cushion, in particular for an office or conference chair, a method for producing such a seat cushion and a seat cushion arrangement, a method for producing such a seat cushion arrangement and an office or conference chair.
  • Seating upholstery is sometimes mostly attached to a seat structure with conventional fasteners such as screws or the like.
  • a seat upholstery has a cushion body and a cushion plate.
  • the cushion body is connected to the cushion plate and / or a cover anchored to the cushion plate.
  • the cushion plate is then screwed onto the seat structure.
  • a disadvantage of such manufacturing and assembly is, however, relatively labor-intensive and associated with a plurality of parts.
  • it is quite inflexible for sales with regard to the selection or changes when choosing upholstery, as a final assembly is usually already carried out in the factory.
  • the present invention is based on the object of specifying an easy-to-produce and flexibly usable seat upholstery, an easy-to-manufacture and flexibly configurable seat-upholstery arrangement and a corresponding office or conference chair.
  • this object is achieved by a seating cushion with the features of claim 1 and / or by a method for producing a seating cushion with the features of claim 7 and / or by a seating cushion arrangement with the features of claim 8 and / or by a method for producing a Seating upholstery with the features of claim 9 and / or solved by an office or conference chair with the features of claim 11.
  • the knowledge / idea on which the present invention is based is to design a seating cushion in the manner of a shell which can be positively attached to and removed from a seat or backrest structure. This is achieved by reaching behind a seat or backrest structure with an undercut on the edge of the shell-like base body.
  • the seating upholstery on a seat or backrest structure is modular, reversible and tool-free and interchangeable.
  • the base body of the seating upholstery is flexibly deformed for this purpose, engages around the seat or backrest structure and engages with its undercut behind the seat or backrest structure, in particular behind an edge of the seat or backrest structure.
  • an undercut is therefore to be understood as a section on an edge of the shell-like structure of a base body that is suitable for reaching behind a seat or backrest structure, in particular a section that curves inward.
  • the shell-like structure of the base body is, in particular, a type of half-shell continued over the edge, which is designed to cover the top or front of a seat or backrest structure and leaves a bottom or back except for the area undercut by the undercut .
  • a circumferential rear grip comprises at least several circumferential sections or the entire circumference of the seat or backrest structure such that the base body and the seat or backrest structure are in engagement with one another through the circumferential rear grip.
  • the solution according to the invention not only enables a simplified assembly of the seating upholstery but also enables a simplified manufacture of the same.
  • the entire seat upholstery can be produced in a common molding process as an integral two-component component without any further assembly steps.
  • Seating furniture in particular an office or conference chair, can be provided with seating furniture cushions at various places in its seating or backrest structure, provided that the underlying location of the structure allows it to reach behind.
  • the edge of the base body is designed in such a way that it encompasses a seat or backrest structure all the way around.
  • at least the edge of the base body or the entire base body preferably contains a flexible or elastic material.
  • the undercut can also be continuous. However, it would also be conceivable to provide undercut areas only in sections, at least two, in particular at least three, preferably at least four such undercut areas being provided.
  • the edge of the base body is divided into a plurality of wrap-around sections.
  • these wrap-around sections can be located in the area of the corners.
  • the undercut is provided on the wrap-around sections.
  • the upholstery body is provided with a cover which is connected to the base body all around in the region of the edge.
  • the cushion body can have a lateral bead, behind or under which the cover is attached to the base body.
  • the cover can be tacked, glued or welded to the base body, for example.
  • the undercut is circumferential on the base body and is designed for continuous circumferential engagement of the seat or backrest structure.
  • the base body is formed with a flexible material which can be expanded with the seat or backrest structure in order to produce a positive connection.
  • the undercut of a base body can also be provided only in sections.
  • the base body can also be made with a firmer one Material formed and only be designed to be bendable in the region of the undercut in such a way that the undercut can be bent open to produce a positive fit of the seat or backrest structure.
  • the base body is designed to be flexible, at least in one area of the undercut, in such a way that the undercut can be reversibly, in particular without tools, stretched to a size required to be slipped over the seat or backrest structure.
  • the seat upholstery is tool-free and particularly easy to assemble and replace.
  • the base body contains a flexible silicone material at least in the region of the undercut.
  • the entire base body can also be made from the flexible silicone material.
  • Such a silicone base body can advantageously be manufactured inexpensively in large numbers in an injection molding tool.
  • production from a thermoplastic elastomer would also be conceivable.
  • generative manufacturing processes are also suitable, for example, for representing the base body with the undercut according to the invention.
  • the base body is formed in one piece with the cushion body.
  • it is an inseparable integral bond.
  • the number of parts is thus advantageously reduced.
  • the base body is designed as an integral two-component injection molded part. It can therefore be manufactured in a common tool. Furthermore, a high component quality can be achieved in the injection molding process, which enables use of the seating cushion produced in this way without post-processing.
  • the base body is designed as a negative shape of a seat structure. Furthermore, the cushion body is designed as a seat cushion. In this way, a modular insertable and replaceable seat cushion is provided.
  • the base body is designed as a negative shape of a backrest structure and the cushion body is designed as a backrest cushion.
  • the base body is designed as a negative form of an armrest structure and the upholstery body is designed as an armrest cushion.
  • the base body is designed as a negative form of a backrest structure and the cushion body is designed as a backrest cushion. In this way, a modularly usable and interchangeable backrest cushion is provided for different backrest types and areas.
  • the positive attachment is carried out by stretching and resiliently deforming the base body at least in a region of the undercut and fitting the base body over the seat or backrest structure.
  • the edge of the base body is brought into engagement with the seat or backrest structure by releasing the tension.
  • an office or conference chair according to the invention can in particular be an office swivel chair or conference swivel chair.
  • the seat or backrest structure is a seat surface structure and the base body is a shell-like negative shape of the seat surface structure formed, wherein the cushion body is formed as a seat cushion formed on the base body.
  • a seat cushion arrangement of the office or conference chair is easy to assemble and modularly interchangeable.
  • the seat or backrest structure is designed as a backrest frame and the base body as a shell-like negative shape of the backrest frame, the upholstered body being designed as a backrest cushion formed on the base body.
  • a backrest cushion arrangement of the office or conference chair is easy to assemble and modularly interchangeable.
  • the seat or backrest structure is designed as an armrest support and the base body as a shell-like negative shape of the armrest support, the cushion body being designed as an armrest cushion formed on the base body.
  • armrest padding of the office or conference chair is easy to install and modularly interchangeable.
  • Fig. 1 shows a schematic sectional view of a seat cushion 1 according to an embodiment.
  • the seating cushion 1 has a base body 2, which is shaped like a shell.
  • this shell-like shape is arranged, for example, with an open side of the shell oriented downward. A closed bottom of the bowl-like shape is thus oriented upwards.
  • the base body accordingly has an edge 3 which extends from the bottom to the open side.
  • This edge 3 has an inwardly curved undercut 4, which is designed for reaching behind a seat or backrest structure 7.
  • the seating cushion 1 also has a cushion body 5, which is connected to the base body 2.
  • the cushion body 5 is arranged on a side 6 of the base body 2 facing away from the undercut 4, that is to say the top in this illustration, and thus represents a seat or backrest cushion.
  • the cushion body 5 extends, for example, over the entire upper side of the base body 2 and is integrally connected to it.
  • Both the base body and the upholstery body are shown in the schematic view purely by way of illustration with a straight surface and a constant thickness. Of course, both the base body and the upholstery body can be mechanically and / or ergonomically varied locally in terms of their shape and thickness.
  • the undercut 4 is provided in the sectional view shown on both areas of the edge 3 shown. Such an opposing arrangement is advantageous for mounting the seating upholstery on a seat or backrest structure, since a certain pretension can thus be applied to the edge 3 and supported on the opposite side in each case.
  • the undercut is shaped like a hook in a purely exemplary manner.
  • others for the purpose of reaching behind and holding on a seat or backrest structure are also conceivable.
  • it could also be an angular shape of the undercut, for example an angular projection.
  • the undercut 4 can in particular also be designed to be resilient, so that it engages behind the seat or backrest structure with a pretension.
  • the base body 2 at least in the area of the undercut 4, is a flexible plastic element.
  • the base body 2 can contain, for example, a flexible silicone material.
  • the base body can also be made entirely of a flexible plastic, for example the flexible silicone material.
  • Other flexible materials for example other types of elastomers, are also conceivable.
  • stiffer materials of the base body for example thermoplastics or thermosets, can also be provided, with sufficient flexibility of the undercut being achieved by spring sections provided in the structure of the base body, in particular in the region of the edge 3. The basic shell-like structure of the base body is retained.
  • the base body 2 is formed in one piece with the cushion body 5.
  • the cushion body 5 can be foamed on the base body 2.
  • it can be an integral two-component injection molded part.
  • a method for producing such seating furniture upholstery correspondingly comprises the steps of forming a shell-like base body 2, which has a shell-like negative shape of a seat or backrest structure 7 and has an undercut 4 that is curved inwards at least in sections, and the molding of a cushion body the base body on a side facing away from the undercut.
  • the upholstery body 5 can also be produced separately and then connected to the base body 2 in a cohesive manner, for example welded or glued.
  • the cushion body 5 is shown continuously in the illustrated embodiment. However, embodiments are also conceivable in which the cushion body 5 has recesses, such as slots, ventilation holes, air pockets or the like. The same applies to the base body 2.
  • Figure 2A shows a schematic sectional view of a seating upholstery arrangement 10 in the unassembled state.
  • the seating cushion arrangement 10 has a seating cushion 1 according to Fig. 1 and a seat or backrest structure 7. In the unmounted state shown, these are still spaced apart.
  • the seat or backrest structure 7 is shown here purely schematically as a rectangle. Of course it can however, it is an integrated or complex-shaped structure of a piece of seating furniture, in particular an office or conference chair.
  • the seat cushion 1 is pushed onto the seat or backrest structure 7, as indicated by the movement arrow shown, and placed over it.
  • the base body at least in a region of the undercut 4, is designed to be flexible in such a way that the undercut 4 can be clamped without tools to a size required to be slipped over the seat or backrest structure 7.
  • the clamping and fitting is reversible, so that tool-free modular assembly and interchangeability is guaranteed.
  • Figure 2B shows the seating upholstery arrangement 10 according to Figure 2A in the assembled state.
  • the base body 2 is brought into engagement with the seat or backrest structure 7 and engages behind it with the undercut 4.
  • a method for producing such a seating furniture upholstery arrangement 10 accordingly comprises the steps of providing the seat or backrest structure 7, providing the seating furniture upholstery 1 and positively attaching the seating furniture poster 1 to the seat or backrest structure 7, the edge 3 of the base body having the seat or Backrest structure 7 is brought into engagement in such a way that the undercut 4 of the edge 3 engages around the seat or backrest structure 7 circumferentially.
  • the positive attachment is in the illustrated embodiment by stretching and resiliently deforming the Base body 2 at least in an area of the undercut 4 and slipped over the seat or backrest structure 7.
  • the edge 3 of the base body is brought into engagement with the seat or backrest structure 7 by releasing the tension, as a result of which the undercut engages behind the seat or backrest structure 7.
  • Fig. 3 shows a schematic bottom view of a seating upholstery arrangement in the assembled state.
  • this can be a seating upholstery arrangement 10 as shown in cross section in FIG Figure 2B is shown.
  • the seating upholstery arrangement 1 here has a rectangular base area with rounded corners.
  • the most varied of base geometries and also three-dimensional geometries of such a seating upholstery arrangement are conceivable.
  • it can be an ergonomically shaped shell or the like.
  • the schematic view below only serves to illustrate the schematic structure of the seating upholstery arrangement 10.
  • the upholstery body 5 is only visible in the region of a protrusion that extends beyond the edge 3.
  • the base body 2 is only visible in the area of its edge 3, which has the undercut 4.
  • the edge 3 and also the undercut 4 are circumferentially formed on the base body 2 and the undercut 4 is designed for continuous circumferential engagement of the seat or backrest structure 7.
  • the base body therefore has a high degree of flexibility, at least in the region of the undercut, in order to be able to be correspondingly clamped for assembly.
  • the seat or backrest structure 7 fills the base body 2 on the inside and extends as far as under the undercut 4, so that its edges are only shown in dashed lines as hidden edges.
  • Fig. 4 shows a schematic bottom view of a seating upholstery arrangement 10 according to a further embodiment in the assembled state.
  • the edge of the base body is subdivided into a plurality, for example four, of wrap-around sections 21. Accordingly, there are points on the base body 2 which separate the wrap-around sections 21 without an undercut 4.
  • the wrap-around sections are located in the area of the corners.
  • the undercut 4 is provided in each case on the wrap-around sections 21 and accordingly engages behind the seat or backrest structure 7 there.
  • Fig. 5 shows a sectional view of a seat cushion 1 according to a further embodiment.
  • the base body 2 is designed in a shell-like manner as a negative shape of a seat structure and the cushion body 5 as a seat cushion.
  • the cushion body is provided with a cover 8, which is connected to the base body 2 all around in the region of the edge 3.
  • a cover 8 can be a fabric or leather cover.
  • the cover 8 is fastened to the base body 2 in the region of the edge 3, in particular fastened in a cohesive manner.
  • the cover can be welded to or glued to the base body 2.
  • Fig. 6 13 shows a perspective view of an office or conference chair 20 according to an embodiment.
  • the office or conference chair 20 has a seat structure 11 and a backrest frame 12. It is also provided with a swivel base 14 and a swivel mechanism 15.
  • the swivel mechanism 15 is located between the swivel base 14 and the seat structure 11 and is also kinematically coupled to the backrest frame 12 via a backrest support 22. In this way, a synchronous kinematics of the office or conference chair 20 is provided, which works in the manner of a synchronous mechanism.
  • the swivel base 14 is provided with a rotatable and height-adjustable column 18 and rollers 19.
  • the seat surface structure 11 is designed here purely by way of example as a continuous seat plate.
  • the seat plate is ergonomically curved.
  • the base body 2 of the in Fig. 5 Seating upholstery 1 shown depicts the negative shape of this seat plate and is formed from a flexible silicone material.
  • the undercut 4 is designed for circumferential engagement behind the seat plate.
  • the cushion body 5 molded onto the base body 2 is arranged on the upper side 6 of the base body 2 facing away from the undercut 4.
  • the backrest frame 12 is closed all round. Accordingly, this can also be provided with a seat cushion.
  • Fig. 7 shows a side view of the office or conference chair 20 according to FIG Fig. 6 with a seat cushion 1 according to Fig. 5 .
  • the seat upholstery 1 can be seen slipped over the seat structure 11.
  • the cushion body 5 thus forms a seat cushion of the office or conference chair 20.
  • a seating furniture cushion arrangement 10 designed as a seat cushion arrangement 17 is created, which according to FIG Fig. 6 as seat structure 11 and the cushion according to Fig. 5 has as a seat cushion 1.
  • the base body 2 By reaching behind the seat plate with the undercut 4 around the circumference, the base body 2 is designed such that it can be attached to the seat plate in a form-fitting manner and is attached here accordingly, so that the cushion body 5 is arranged as a seat cushion in the attached state.
  • the backrest frame 12 merges into the backrest support 22 by way of example.
  • a backrest cushion could at least not completely engage behind the backrest frame 12 because of the backrest support 22 with a peripheral edge 3 and undercut 4.
  • At least the undercut 4 would have to be interrupted in the area of the swivel mechanism 15. Because of the back area to the swivel mechanism tapering shape of the backrest frame 12 could, however, still be provided for an engagement of the seat cushion 1 and the backrest frame 12 with sufficient circumferential engagement of the backrest frame 12 with the undercut.
  • the base body 2 is then designed accordingly as a negative shape of the backrest frame 12 and the cushion body 5 as a backrest cushion.
  • Fig. 8 shows a schematic sectional view of a seat cushion 1 according to a further embodiment.
  • This embodiment differs from the embodiment Fig. 1 in that the cushion body 5 is not only provided on the top but also extends over the edge 3 and only ends at the beginning of the undercut 4.
  • a cover 8 symbolized with a broken line is also provided in this embodiment.
  • this can be attached to the undercut 4.
  • Fig. 9 shows a schematic sectional view of a seat cushion 1 according to yet another embodiment.
  • This embodiment differs from Fig. 8 by the fact that the undercut 4 here starts overall closer to the base of the base body 2 and is correspondingly larger. Specifically, the edge 3 is formed here with an edge 9 enclosing an angle ⁇ 90 °, from which the undercut 4 is offset obliquely inwards.
  • the cover 8 is drawn over the undercut 4 and shoots it in completely.
  • the cover 8 is fastened to the base body with fastening means, for example tacker needles or the like.
  • the fasteners are placed in particular in the area of the edge. In this way, the cover is clamped between the base body and a seat or backrest structure during assembly and is thus fixed over a large area. Nevertheless, the connection can advantageously be released again by overcoming the spring force of the undercut 4 without the need for tools, without the cover 8, which is still fastened to the base body 2 by means of fasteners, having to be released from the base body 2.
  • the cover also enables a concealment of recesses in the base body 2.
  • This embodiment is therefore in accordance with both the circumferential design of the undercut 4 Fig. 3 as well as with training in wrap-around sections 21 according to Fig. 4 enables.
  • Fig. 10 shows a perspective view of an office or conference chair 20 according to a further embodiment.
  • a filled backrest frame 12 is provided here.
  • armrest supports 13 coupled to the seat structure 11 are provided.
  • the illustrated embodiment already installed a seat cushion assembly 17.
  • an armrest structure of the armrests 13 would be undercut by an undercut 4 of a base body 2 of a correspondingly shaped seating cushion 1.
  • the base body is thus designed as a negative form of the armrest structure and the cushion body 5 as an armrest cushion.
  • Fig. 11 shows a sectional view of a seat cushion arrangement 17 of an office or conference chair according to an embodiment.
  • this is the exemplary seat cushion arrangement 17 of the office or conference chair 20 according to Fig. 10 .
  • the seat cushion assembly 17 is in relation to FIG Fig. 9 Seating cushion 1 designed as described. Accordingly, the base body 2 is formed at its edge 3 with an edge 9 from which the undercut 4 originates. The reference 8 is hidden here for better clarity.
  • a bottom 23 of the base body is nestled against a seat-pillar-like shape of the seat surface structure 11.
  • the cushion body is more padded in a seat area 24 than in a leg support area 25. At a front end of the leg support area 25, the seat structure 11 and the base body 2 fall down together.
  • a bead 16 is provided, which is undercut by the undercut 4.

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  • Chair Legs, Seat Parts, And Backrests (AREA)
EP19200165.9A 2018-10-16 2019-09-27 Assemblage d'un coussin de meuble d'assise, procédé de fabrication d'un assemblage du coussin de meuble d'assise, chaise de bureau ou de conférence Active EP3639700B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018217672.8A DE102018217672A1 (de) 2018-10-16 2018-10-16 Sitzmöbelpolster, Verfahren zur Herstellung eines Sitzmöbelpolsters, Sitzmöbelpolsteranordnung, Verfahren zur Herstellung einer Sitzmöbelpolsteranordnung, Büro- oder Konferenzstuhl

Publications (2)

Publication Number Publication Date
EP3639700A1 true EP3639700A1 (fr) 2020-04-22
EP3639700B1 EP3639700B1 (fr) 2022-06-01

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EP19200165.9A Active EP3639700B1 (fr) 2018-10-16 2019-09-27 Assemblage d'un coussin de meuble d'assise, procédé de fabrication d'un assemblage du coussin de meuble d'assise, chaise de bureau ou de conférence

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EP (1) EP3639700B1 (fr)
DE (1) DE102018217672A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5879051A (en) * 1996-11-14 1999-03-09 Itw De France Device and method for fixing a seat covering and the seat obtained
JP3017105B2 (ja) * 1996-10-15 2000-03-06 コクヨ株式会社 椅 子
JP3595953B2 (ja) * 1998-07-09 2004-12-02 株式会社イトーキクレビオ 椅子の座又は背もたれ

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3981534A (en) * 1975-06-27 1976-09-21 Universal Oil Products Company Seat cover fastening system
DE3841531A1 (de) * 1988-12-09 1990-06-13 Bayer Ag Befestigung zwischen einem polsterbezug und einem das polster aufnehmenden traeger
US7251917B2 (en) * 2003-06-11 2007-08-07 Sava Cvek Methods and arrangements for securing fabric

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3017105B2 (ja) * 1996-10-15 2000-03-06 コクヨ株式会社 椅 子
US5879051A (en) * 1996-11-14 1999-03-09 Itw De France Device and method for fixing a seat covering and the seat obtained
JP3595953B2 (ja) * 1998-07-09 2004-12-02 株式会社イトーキクレビオ 椅子の座又は背もたれ

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EP3639700B1 (fr) 2022-06-01
DE102018217672A1 (de) 2020-04-16

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