WO2023047633A1 - 椅子 - Google Patents
椅子 Download PDFInfo
- Publication number
- WO2023047633A1 WO2023047633A1 PCT/JP2022/009723 JP2022009723W WO2023047633A1 WO 2023047633 A1 WO2023047633 A1 WO 2023047633A1 JP 2022009723 W JP2022009723 W JP 2022009723W WO 2023047633 A1 WO2023047633 A1 WO 2023047633A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- backrest
- shaft
- adjustment
- biasing
- compression coil
- Prior art date
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- 238000007906 compression Methods 0.000 claims description 60
- 230000005540 biological transmission Effects 0.000 description 12
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 5
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
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- 230000002093 peripheral effect Effects 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
- A47C1/024—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination
-
- 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
- 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
- A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
- A47C1/03266—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with adjustable elasticity
-
- 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
- A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
- A47C1/03272—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs
-
- 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
- A47C1/03294—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest slidingly movable in the base frame, e.g. by rollers
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/02—Rocking chairs
- A47C3/025—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame
- A47C3/026—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame with central column, e.g. rocking office chairs; Tilting 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
- A47C7/36—Support for the head or the back
- A47C7/40—Support for the head or the back for the back
- A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
Definitions
- the present invention relates to chairs. This application claims priority based on Japanese Patent Application No. 2021-155841 filed in Japan on September 24, 2021, the content of which is incorporated herein.
- the backrest is tiltably supported by the support structure, and the biasing means is arranged behind the backrest portion of the support structure of the backrest.
- the lower end of the urging means is restricted from moving downward inside the support structure, but the upper end is allowed to move downward, and the axial direction is oriented vertically. The configuration is described with the backrest positioned behind the backrest.
- the biasing means is pushed and moved by the tilted backrest, and accumulates a biasing force that serves as a restoring force to the initial state.
- the operation means for adjusting the biasing force of the biasing means is also arranged at the rear portion of the lower surface of the seat of the chair. Therefore, the operation means can be accessed by lowering the hand below the position where the seated person lowers the hand in the normal sitting state, so there is a problem in operability and there is room for improvement in terms of usability.
- the present invention has been made in view of the above circumstances, and provides a chair that can improve the operability of adjusting the restoring force of the tilted backrest.
- a chair includes a support structure, and is rotatably supported by the support structure about an axis along the width direction of the support structure, and is tilted backward from an initial state.
- a backrest that can be displaced to a tilted state;
- a biasing unit that biases the backrest in the tilted state in a direction of returning to the initial state;
- an adjustment unit that adjusts the biasing force of the biasing unit;
- the operation portion is arranged rearward from the axis and on one side of the backrest in the width direction.
- the biasing section is provided on the backrest or the support structure
- the adjustment section is provided on the backrest
- the operation section is supported by the backrest so as to be rotatable. It is arranged on one side of the backrest in the width direction behind the axis of the backrest. That is, it is possible to dispose the operation part on the outside of the backrest in the width direction after providing the adjustment part on the backrest. Therefore, in the present invention, the operating portion can be arranged at the back of the chair and at the backrest portion above the chair. Accordingly, the seated person can easily access the operation section by simply lowering the hand from the normal seated state, and the usability of the operation for adjusting the restoring force of the tilted backrest can be improved.
- the backrest includes a pair of side walls spaced apart in the width direction, the adjustment section is arranged between the pair of side walls, and the operation section includes: Extending in the width direction, the width direction outer end protrudes outward from between the pair of side walls, and the width direction inner portion is connected to the adjusting portion between the pair of side walls.
- An operating shaft and an operating lever provided at the outer end of the operating shaft may be provided.
- the adjustment section can be arranged at a position close to the operation section provided between the pair of side walls of the backrest. That is, the connecting portion between the operating shaft of the operating portion and the adjusting portion can have a simple structure.
- the adjustment portion can be easily adjusted by using the space between the pair of side walls without using the space above the support structure. can be placed.
- the adjustment portion can be shielded in the left-right direction (width direction) by the pair of side walls, so that the external appearance can be prevented from being spoiled.
- the adjustment section may be positioned above the support structure.
- the adjustment section can be arranged with a margin using the space above the support structure. Moreover, in this case, since the adjustment section can be shielded from below by the support structure, it is possible to further prevent the external appearance from being spoiled.
- the adjustment section includes an action member that acts on the biasing section, and a support member that movably supports the action member, and the support member includes the It may be fixed to the backrest.
- the adjusting section has the acting member and the supporting member, and by fixing the supporting member to the backrest in an immovable state, the movement of the acting member relative to the backrest can be stabilized. can.
- the action member includes an action shaft that supports the biasing portion and an axial direction that is arranged in the front-rear direction when viewed from above, and that the action shaft extends along the axial direction. and an adjustment shaft that can be moved by the operation portion, and the operating shaft may be displaced along the adjustment shaft by the operation of the operation portion.
- the seated person can displace the action shaft along the adjustment shaft and move it to a desired position by operating the operation portion.
- the position of the biasing portion connected to the working shaft is changed, so that the biasing force of the biasing portion can be adjusted according to the position of the working shaft, that is, the position of the biasing portion.
- the biasing portion may include a spring that biases the backrest in the tilted state in a direction of returning to the initial state.
- the structure for urging the backrest in the direction of returning to the initial state can be a simplified structure using a spring without using other power.
- the biasing portion is a compression coil spring that biases forward and backward above the support structure, and a rear end portion of the compression coil spring extends from the back of the back. It may be located on the leaning side and connected to the adjusting portion.
- the compression coil spring which is the biasing part
- the compression coil spring can be accommodated above the support structure with the compression coil spring facing sideways (front-rear direction).
- the rear end of the compression coil spring can be positioned closer to the backrest and connected to the adjusting section, and the adjusting section and the operating section can be connected with a simple structure.
- the adjusting section and the operating section can be arranged at the rear of the chair, the operating section can be arranged at a position that is easier for the seated person to access.
- a seat receiving member that receives a seat is supported on the upper portion of the support structure so as to be slidable in the front-rear direction, and the front end portion of the compression coil spring is connected to the seat. It may be fixed to a front portion of a receiving member, and when the backrest is displaced toward the tilted state, the seat receiving member may move rearward to compress the compression coil spring from the front.
- the seat receiving member also moves backward when the backrest tilts, so that the backward movement of the seat receiving member applies a biasing force that compresses the compression coil spring from the front. Therefore, in the present invention, when the backrest is tilted, the compression coil spring is urged and compressed by both the backrest and the seat receiving member, so that the urging force can be increased.
- the chair of the present invention it is possible to improve the operability of adjusting the restoring force of the tilted backrest.
- FIG. 1 is a perspective view of a chair according to an embodiment of the present invention from which an upholstery material has been removed, as viewed diagonally from the rear;
- FIG. 1 is an exploded perspective view of a chair according to one embodiment of the present invention;
- FIG. 2 is a partially exploded side view showing the configuration of a biasing section, an adjusting section, and an operating section of the chair according to one embodiment of the present invention;
- FIG. 5 is a side view of FIG. 4 with a rear cover removed;
- FIG. 6 is a perspective view seen obliquely from the front upper side of FIG. 5 ;
- FIG. 7 is a plan view of FIG. 6 viewed from above;
- FIG. 8 is a cross-sectional view along line VIII-VIII shown in FIG. 7; It is the perspective view which looked at the adjustment part and the operation part from diagonally back.
- FIG. 4 is a vertical cross-sectional view showing the main parts of the adjustment section and the operation section; It is a figure which shows the state which made the chair shown in FIG. 8 tilt.
- FIG. 10 is a diagram showing a state in which the chair is tilted when the operating shaft is moved above the adjusting shaft;
- FIG. 1 A chair according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 12.
- FIG. the direction in which a seated person sitting on the seat 17 described later in a normal posture faces forward will be referred to as "forward”, and the opposite direction will be referred to as "backward”.
- the vertical and horizontal directions in the following description mean the directions that match the directions centered on the seated person when the seated person is seated on the seat 17 in a normal posture.
- the left-right direction at this time is also referred to as the width direction.
- an arrow FR pointing forward, an arrow UP pointing upward, and an arrow LH pointing left are written.
- a chair 1 As shown in FIG. 1, a chair 1 according to this embodiment includes a leg portion 10 installed on a floor surface F, a box-shaped support base 40 installed on the upper portion of the leg portion 10, and a support base 40.
- the seat 17 attached to the upper part, the backrest 20 attached to the rear part of the support base 40 and supporting the back of the seated person, and the seat 17 extending from both left and right sides on the lower side of the seat 17 to the upper side of the seat 17, and armrests 19 on which the elbows and arm tips of the user are placed.
- the leg portion 10 has a multi-path leg 11 with casters 11a, and a pedestal 12 having a built-in gas spring (not shown) which is an elevating mechanism that rises from the central portion of the multi-path leg 11 .
- the pedestal 12 has an outer cylinder 13 and an inner cylinder 14 .
- the outer cylinder 13 is non-rotatably fitted to and supported by the manifold 11 .
- a lower portion of the inner cylinder 14 is supported by the outer cylinder 13 so as to be horizontally rotatable.
- the upper portion of the inner cylinder 14 is fixed to the support base 40 .
- the support base 40 incorporates a lifting adjustment mechanism for the pedestal 12 and a tilting mechanism for the backrest 20 .
- the backrest 20 has a backrest structure 20A (see FIG. 2) and an upholstery 26 covering the backrest structure 20A.
- the backrest structure 20A receives the back of the seated person.
- the backrest structure 20A has a backrest support 21 and a backrest body 23 supported by the backrest support 21 .
- the backrest support 21 supports the back of the seated person.
- the backrest support 21 has a backrest support member 30 (support structure) and a rear extension member 22 .
- the backrest support member 30 has an inner member 31 and an outer member 32 .
- the inner member 31 has a vertically elongated shape.
- the inner member 31 is formed in a flat plate shape.
- the plate surface of the inner member 31 is oriented substantially in the front-rear direction.
- the inner member 31 has an inner vertically extending portion 33 and an inner upper projecting portion 34 .
- the inner vertically extending portion 33 has an inner curved upper portion 331 , an inner curved lower portion 332 , an inner lower portion 333 , and an inner lower fixing portion 334 .
- the outer member 32 has an outer vertically extending portion 35 and an outer upper projecting portion 36 .
- the outer vertically extending portion 35 has an outer curved upper portion 351 , an outer curved lower portion 352 , and an outer lower portion 353 .
- the inner member 31 and the outer member 32 are connected by screws.
- the backrest support member 30 is fixed to the inner member 31 and the outer member 32, and is rotated through a rotation main shaft 42 (axis line) extending in the axial direction along the width direction (horizontal direction) at the rear portion of the support base 40.
- a movable pivot member 38 is provided. As shown in FIGS. 4 and 5, the rotating member 38 is rotatable with respect to the support base 40 about an axis in the left-right direction.
- the bolt 38a is inserted through the mounting recess 353a of the outer lower portion 353 of the outer member 32, the mounting hole 353b, the mounting hole 334a of the inner lower fixing portion 334 of the inner member 31, and the mounting hole formed in the rotating member 38, and is attached to the bolt 38a. is fastened with a nut.
- the inner member 31 and the outer member 32 are integrally fixed to the rotating member 38 .
- the rotating member 38 and the outer lower portion 353 of the outer member 32 are covered with the rear cover 37 from behind.
- the backrest 20 configured in this manner is supported by the backrest support member 30 so as to be rotatable about an axis along the width direction of the backrest support member 30, and the upper end portion 20a is displaceable from an initial state P1 in which the upper end portion 20a is positioned relatively forward to a tilted state P2 (see FIG. 11) in which the upper end portion 20a is positioned relatively rearward. That is, the backrest 20 can be displaced between the initial state P1 and the tilted state P2 that is tilted backward therefrom.
- a seat shell 51 is provided below the seat 17 to hold the seat 17 from below.
- the seat 17 and the seat shell 51 are attached to a seat receiving member 50 supported from below by the support base 40 .
- the seat shell 51 is engaged with a locking portion (not shown) provided on the lower surface of the rear end of the seat shell 51 so as to be hooked from the rear of the seat receiving member 50 . It is fixed by fixing means such as.
- the seat receiving member 50 includes the above-described seat shell 51, a main body portion 52 having a rectangular shape in plan view to which the seat shell 51 can be attached to the upper edge, and a rear attachment portion extending rearward from a rear end portion 52a of the main body portion 52. long holes 54 extending in the front-rear direction on both sides in the left-right direction of the front lower surface 52b of the main body 52;
- the seat receiving member 50 is a strength member made of, for example, a drawn sheet metal or a metal material such as aluminum die-cast, and has a saucer shape with an open top in the vertical direction.
- the seat receiving member 50 has a bottom wall portion 501 and side wall portions 502 erected from the peripheral edge portion of the bottom wall portion 501 (see FIG. 8).
- the above-described seat shell 51 is attached to the upper end portion of the side wall portion 502 .
- the bottom wall portion 501 is formed with a concave portion 503 recessed upward in a shape along the outer shape of the compression coil spring 61 so as not to interfere with the compression coil spring 61 to be described later.
- the rear mounting portion 53 is provided on the rotating member 38 of the backrest support member 30 and is rotatably connected to the secondary shaft 39 of the operating portion 80 extending along the left-right direction, which will be described later. It is That is, the rear mounting portion 53 has a support member 531 extending in the left-right direction, and connecting pieces 532 provided at both longitudinal ends of the support member 531 and having rotation shaft holes 532a penetrating in the left-right direction. (See Figure 8).
- the secondary shaft 39 is rotatably inserted through the rotary shaft hole 532a.
- the rear attachment portion 53 that is, the seat receiving member 50 ) is rotatable about the sub shaft 39 with respect to the rotating member 38 . That is, as shown in FIG.
- the seat receiving member 50 moves backward with respect to the support base 40 when the backrest 20 shifts from the initial state P1 to the tilted state P2.
- an arrow E1 shown in FIG. 5 indicates the moving direction of the seat receiving member 50 when changing from the initial state P1 to the tilted state P2.
- each of the pair of elongated holes 54 is provided with a slide engaging portion 43 projecting upward from the front portion of the support base 40, in a state in which downward movement of the elongated hole 54 is restricted. , and are slidably engaged along the longitudinal direction (front-to-rear direction) of the long hole 54 .
- the long hole 54 side slides rearward with respect to the slide engaging portion 43 provided on the support base 40, and the seat receiving member 50 moves rearward. That is, when the seat receiving member 50 moves rearward, the longitudinal position of the slide engaging portion 43 with respect to the elongated hole 54 is a position moved from the rear side to the front side.
- the spring front end receiving portion 55 has a pair of fixing portions 551 provided on both sides in the left-right direction and fixed to the lower surface of the bottom wall portion 501, and a connecting portion 552 connecting the pair of fixing portions 551 in the left-right direction. are doing.
- the fixing portion 551 is provided with a front spring reaction force receiving shaft 553 (see FIG. 8) that is supported while being inserted through the pair of fixing portions 551 and that extends in the left-right direction in the axial direction.
- the fixing portion 551 is formed with an insertion hole 551a through which the front spring reaction force receiving shaft 553 is inserted.
- the connecting portion 552 is provided at a position where it does not interfere with a later-described compression coil spring 61 supported by the front spring reaction force receiving shaft 553 .
- the front spring reaction force receiving shaft 553 is a bar with a circular cross section. Both axial ends of the front spring reaction force receiving shaft 553 are inserted into the insertion holes 551a of the fixing portions 551 and fixed so as not to move in the left-right direction with respect to the pair of fixing portions 551 .
- the front spring reaction force receiving shaft 553 supports the front ends of two compression coil springs 61 biased from the rear in the compression direction.
- the support base 40 includes a support base body portion 41 (support structure) fixed to the upper portion of the pedestal 12 (see FIG. 5), and a support base body portion 41 that is positioned behind the support base body portion 41.
- a rotation main shaft 42 (axis line) that supports the rotation member 38 of the leaning support member 30 so as to be rotatable in the tilting direction, and a slide engaging portion 43 that supports the seat receiving member 50 so as to be slidable in the front-rear direction.
- the support base body portion 41 has a bottom plate 411 and side plates 412 extending upward from the left and right sides of the bottom plate 411, and is formed in a bowl shape that opens upward as a whole.
- Two compression coil springs 61 are accommodated in the first internal space S ⁇ b>1 above the support base body portion 41 .
- the rear end portion 41 a of the support base body portion 41 protrudes rearward from the rear upper portion 412 a of the side plate 412 .
- the support base body portion 41 is provided with a rotation main shaft 42 at rear upper portions 412a of side plates 412 located on both left and right sides.
- the front portion of the rotating member 38 of the backrest support member 30 is rotatably supported on the rotating main shaft 42 inside the rear portion of the support base body portion 41 .
- the rotation centers of the rotation main shafts 42 provided on the left and right side plates 412 are coaxial with each other.
- the slide engaging portion 43 is provided in a state of protruding upward from the front upper end 412b of the side plate 412 on both the left and right sides of the support base portion 41 .
- the slide engaging portion 43 has a protrusion 431 and a sliding portion 432 provided at the upper end of the protrusion 431 and having a diameter larger than that of the protrusion.
- the projecting portion 431 is formed in a circular cross-section having a diameter dimension substantially equal to the width dimension of the elongated hole 54 (see FIG. 5) of the seat receiving member 50 .
- the slide engaging portion 43 has a protrusion 431 inserted through the elongated hole 54 and a sliding portion 432 disposed inside the seat receiving member 50 .
- the inner portion of the seat receiving member 50 where the sliding portion 432 is arranged is above the upper surface of the bottom wall portion 501 and between the facing surfaces of the side wall portions 502 .
- the sliding area of the sliding portion 432 in the inner portion of the seat receiving member 50 is a position avoiding the concave portion 503 (see FIG. 8) recessed upward in a shape along the outer shape of the compression coil spring 61 described above.
- a space is provided in which the sliding portion 432 does not interfere with other parts. That is, the sliding regions of the long hole 54 and the sliding portion 432 are set at positions on both the left and right sides avoiding the pair of compression coil springs 61 in top view.
- a compression coil spring 61 is attached to the support base body portion 41 of the support base 40 and the rotating member 38 to bias the backrest 20 in the tilted state P2 (see FIG. 11) in the direction of returning to the initial state P1.
- a force portion 60, an adjustment portion 70 that adjusts the biasing force of the compression coil spring 61, and an operation portion 80 that is connected to the adjustment portion 70 and operates the adjustment portion 70 are provided.
- the rotating member 38 has a rear wall 381 and a pair of side walls 382 extending in a direction perpendicular to the left and right ends of the rear wall 381 and spaced apart in the width direction.
- an adjusting section 70 and an operating section 80 are accommodated in the second internal space S2 on the front side of the rotating member 38.
- a rear end portion of the compression coil spring 61 is supported in the front portion of the second internal space S2.
- a pair of side walls 382 of the rotating member 38 are rotatably supported by the rotating main shaft 42 with respect to the rear upper portion 412a of the side plate 412 of the support base body portion 41 .
- an adjustment section 70 and an operation section 80 are arranged in a second internal space S2 located behind the rotation main shaft 42 of the rotation member 38 .
- the rotating member 38 supports a rotating main shaft 42 at its front portion. Further, the rotating member 38 has a secondary shaft 39 on which the rear attachment portion 53 of the seat receiving member 50 is attached at the rear portion.
- the rotating member 38 supports an operation shaft 81 of an operation portion 80 at an intermediate portion between the front portion and the rear portion.
- the secondary shaft 39 extends in the left-right direction and is supported by side walls 382 on both the left and right sides.
- a connecting piece 532 of the rear mounting portion 53 of the seat receiving member 50 is rotatably supported on the sub shaft 39 . That is, the rear portion of the seat receiving member 50 is rotatably supported with respect to the rotating member 38 .
- the urging portion 60 is a structure that generates a restoring force for returning the tilted backrest 20 to its original position (the initial state P1 shown in FIG. 8) by its urging force.
- the biasing portion 60 includes a compression coil spring 61, a spring front end support portion 62 provided at one end (front end) of the compression coil spring 61, and a spring rear end provided at the other end (rear end). and a support portion 63 .
- the compression coil spring 61 has its front end compressed rearward and its rear end compressed forward.
- two compression coil springs 61 whose biasing directions are oriented in the front-rear direction are accommodated in a state of being arranged in the left-right direction.
- the pair of compression coil springs 61 are attached in a state of being always compressed and biased regardless of whether the backrest 20 is in the initial state P1 or the tilted state P2 (see FIG. 11).
- the compression coil spring 61 when the backrest 20 is in the tilted state P2 is compressed more than when the backrest 20 is in the initial state P1.
- the spring front end support portion 62 and the spring rear end support portion 63 are connected by an extendable connecting shaft 64 that is inserted through the inside of the compression coil spring 61 .
- the compression and extension of the compression coil spring 61 changes the distance between the spring front end support portion 62 and the spring rear end support portion 63 , thereby expanding and contracting the telescopic connecting shaft 64 .
- the spring front end support portion 62 contacts the front end of the compression coil spring 61 from the front.
- the spring front end support portion 62 is formed in a U shape that opens forward when viewed in the left-right direction.
- the U-shaped concave portion 62a is engaged with the front spring reaction force receiving shaft 553 of the spring front end receiving portion 55 provided in the seat receiving member 50 while being pressed from behind. That is, the front spring reaction force receiving shaft 553 bears the reaction force of the compression coil spring 61 regardless of whether the backrest 20 is in the initial state P1 or the tilted state P2.
- the spring rear end support portion 63 abuts on the rear end of the compression coil spring 61 from behind.
- the spring rear end support portion 63 has a through hole 631 (see FIG. 6) penetrating in the left-right direction.
- An operating shaft 71 (shaft portion 712 ) extending in the left-right direction of the adjustment portion 70 described later is inserted and supported in the through hole 631 .
- the spring rear end support portion 63 is in a state where a spring force is applied to the action shaft 71 from the front. That is, the working shaft 71 bears the reaction force of the compression coil spring 61 regardless of whether the backrest 20 is in the initial state P1 or the tilted state P2.
- the adjusting section 70 has a function of adjusting the biasing force of the compression coil spring 61 of the biasing section 60 and adjusting the restoring force of the backrest 20 in the tilted state P2 (see FIG. 11).
- the adjusting portion 70 is housed in the second internal space S2 between the side walls 382 of the rotating member 38 of the backrest 20.
- the adjustment portion 70 includes an action shaft 71 (action member) that acts on the biasing force of the biasing portion 60 (compression coil spring 61), an adjustment shaft 72 (action member) that movably supports the action shaft 71, and an adjustment shaft 72 (action member) that movably supports the action shaft 71. and a support member 73 that rotatably supports the operation portion 80 .
- the adjustment section 70 includes an action member 74 that acts on the biasing section 60 and a support member 73 that movably supports the action member 74.
- the action member 74 acts on the biasing section 60 (compression coil spring). 61), and an adjusting shaft 72 which is arranged with its axial direction oriented in the front-rear direction when viewed from above and which allows the operating shaft 71 to move along the axial direction.
- the axis of the adjustment shaft 72 is parallel to the front-rear direction when viewed from above, in other words, it may be in a direction other than the up-down direction among the directions orthogonal to the left-right direction.
- the adjusting shaft 72 is integrally provided with a second transmission gear 721 consisting of a bevel gear at its upper end. This second transmission gear 721 meshes with a first transmission gear 83 of an operation unit 80, which will be described later. By operating the operation unit 80, rotational force is transmitted from the first transmission gear 83 to the second transmission gear 721, and the adjustment shaft 72 is rotated. Rotate in both forward and reverse directions.
- the adjusting shaft 72 is formed with a male thread (not shown) with which the working shaft 71 is screwed over the entire axial direction.
- the adjustment shaft 72 is disposed with its axial direction slanted so as to gradually move from the front to the rear as it goes from the shaft lower end portion 72b toward the shaft upper end portion 72a in a side view. ing.
- the adjustment shaft 72 obliquely extends in the vertical direction and the front-rear direction.
- the shaft lower end portion 72b is located below the rotation main shaft 42.
- the shaft upper end portion 72 a is located above and behind the main rotation shaft 42 .
- the working shaft 71 that moves along the adjusting shaft 72 that is, the spring rear end support portion 63 provided at the rear end of the compression coil spring 61 connected to the working shaft 71 is positioned below the rotation main shaft 42 ( 11) and a position above and behind the rotation main shaft 42 (see FIG. 12).
- the adjusting portion 70 is configured such that when the adjusting shaft 72 rotates, the operating shaft 71 screwed to the male screw moves in the axial direction of the adjusting shaft 72 according to the rotational position of the adjusting shaft 72 .
- the adjusting section 70 can adjust the position of the operating shaft 71 by moving the operating shaft 71 along the adjusting shaft 72 .
- the compression coil spring 61 rotates around the spring front end support portion 62, so only the angle seen from the left and right direction changes.
- the support member 73 includes a fixed plate 731 extending vertically and fixed to the rear wall 381 of the rotating member 38 by screws (not shown). It has an upper support plate 732 and a lower support plate 733 extending forward from the end.
- the adjustment shaft 72 is arranged between a lower support plate 733 serving as an upper support plate 732 .
- the adjustment shaft 72 has a shaft upper end portion 72 a rotatably supported by an upper support plate 732 and a shaft lower end portion 72 b rotatably supported by a lower support plate 733 .
- the action shaft 71 includes a nut portion 711 having a female thread that screws onto the adjustment shaft 72, and shaft portions 712 extending to both left and right sides of the nut portion 711.
- the nut portion 711 moves along the adjustment shaft 72 as the adjustment shaft 72 rotates.
- the spring rear end support portion 63 of the biasing portion 60 is connected to the shaft portion 712 .
- the operating portion 80 is provided on the rotating member 38 .
- the operation unit 80 is a member that can be operated by a person such as a seated person.
- the operation portion 80 includes an operation shaft 81 extending in the left-right direction, an operation lever 82 provided at a projecting tip (one end) projecting outward from a side wall 382 of the operation shaft 81 , and an intermediate portion of the operation shaft 81 . and a first transmission gear 83, which is a bevel gear provided and located in the second internal space S2. That is, the operation portion 80 has the widthwise outer end of the operation shaft 81 protruding from the side wall 382 in the width direction, while the widthwise inner portion thereof is arranged in the second internal space S2 and Concatenated.
- the operating shaft 81 is rotatably supported on the upper portions of side walls 382 on both the left and right sides of the rotating member 38 .
- the operating shaft 81 is arranged above the adjusting shaft 72, and arranged so that the axial center of the operating shaft 81 and the axial center of the adjusting shaft 72 are positioned in the same plane.
- the first transmission gear 83 provided at the intermediate portion in the axial direction of the operating shaft 81 meshes with the second transmission gear 721 provided on the adjustment shaft 72 . That is, the rotation of the operating shaft 81 , that is, the rotation of the first transmission gear 83 about the axis in the left-right direction is converted into the rotation of the adjustment shaft 72 of the second transmission gear 721 about the axis.
- the operation lever 82 is positioned on one side in the width direction of the side wall 382 of the rotating member 38 and behind the seat receiving member 50 .
- the position of the operating lever 82 is above and behind the seat receiving member 50, and is a position where the hands of the person seated on the seat 17 above the seat receiving member 50 can easily access.
- the shape of the operation lever 82 is not particularly limited as long as it is a shape that can be operated by the seated person. It may be a shape extending to
- the operation lever 82 of the operation portion 80 is rotated around the central axis of the operation shaft 81, thereby compressing.
- An action shaft 71 located at the spring rear end support portion 63 of the coil spring 61 moves up and down along the adjustment shaft 72 .
- the adjustment shaft 72 rotates in one direction via the first transmission gear 83 and the second transmission gear 721, and the nut portion 711 screwed to the adjustment shaft 72, that is, the action Axis 71 will move up along adjustment axis 72 .
- the distance between the spring front end support portion 62 and the spring rear end support portion 63 of the biasing portion 60 changes, and the compression coil spring
- the amount of compression of 61, that is, the biasing force (reaction force) of compression coil spring 61 can be adjusted. That is, it is possible to adjust the restoring force when the backrest 20 returns from the tilted state P2 to the initial state P1.
- the position of the operating shaft 71 that is, the position of the spring rear end support portion 63 of the compression coil spring 61 is changed by moving the operating shaft 71 on the adjusting shaft 72, thereby adjusting the compression coil. It is configured to adjust the biasing force of the spring 61 (returning force of the backrest).
- the working shaft 71 that moves the adjusting shaft 72 can be adjusted to a position above the main rotating shaft 42 in the vertical direction.
- the biasing portion 60 is provided on the support base body portion 41, the adjusting portion 70 is provided on the backrest 20, and the operating portion 80 is supported so that the backrest 20 can rotate. It is arranged behind the axis (rotating main shaft 42) and at the side of the backrest 20 in the width direction. That is, it is possible to arrange the operation part 80 on the outside of the backrest 20 after the adjustment part 70 is provided on the backrest 20 . Therefore, in the present embodiment, the operating portion 80 can be arranged at a position on the back of the chair 1 and above the chair 1 (the side wall 382 of the rotating member 38 in the present embodiment) of the backrest. can. Therefore, the seated person can easily access the operation lever 82 of the operation part 80 only by lowering the hand from the normal seated state, and the usability is good as an operation for adjusting the restoring force of the tilted backrest 20. can be done.
- the adjustment section 70 can be arranged at a position close to the operation section 80 provided between the side walls 382 of the backrest 20 .
- the connecting portion between the operating shaft 81 of the operating portion 80 and the adjusting portion 70 can have a simple structure.
- the adjustment portion 70 since the adjustment portion 70 is not arranged in addition to the urging portion 60 on the upper portion of the support base body portion 41, the adjustment portion 70 can be easily installed using the space between the side walls 382. can be placed.
- the side wall 382 can shield the adjustment section 70 in the left-right direction, thereby preventing the external appearance from being spoiled.
- the second internal space S2 is located above the support base body portion 41, the space between the side walls 382 and the space above the support base body portion 41 are used to allow the adjustment portion 70 to be easily moved. can be placed. Further, in this case, the adjustment portion 70 can be shielded from below by the bottom plate 411 of the support base body portion 41, so that the external appearance can be further prevented from being spoiled.
- the adjustment part 70 has the action members (the action shaft 71 and the adjustment shaft 72) and the support member 73, so that the support member 73 is fixed to the rotating member 38 of the backrest 20. By fixing in this state, the movement of the action member with respect to the backrest 20 can be stabilized.
- the action shaft 71 can be displaced to a predetermined position on the adjustment shaft 72 by the seated person operating the operation lever 82 of the operation portion 80 .
- the position of the spring rear end support portion 63 of the compression coil spring 61 connected to the working shaft 71 is changed. Biasing force can be adjusted.
- the compression coil spring 61 can be accommodated in the first internal space S1 above the support base body portion 41 with the compression coil spring 61 oriented sideways (in the front-rear direction).
- the rear end portion of the compression coil spring 61 (spring rear end support portion 63) can be positioned in the second internal space S2 formed in the rotating member 38 of the backrest 20 and connected to the adjustment portion 70,
- the adjusting section 70 and the operating section 80 can be connected with a simple structure.
- the adjustment section 70 and the operation section 80 can be arranged at the rear of the chair 1, the operation lever 82 of the operation section 80 can be arranged at a position that is easier for the seated person to access. .
- the seat support member 50 for receiving the seat 17 is supported on the upper portion of the support base body portion 41 so as to be slidable in the front-rear direction. Since the seat support member 50 also moves rearward when the backrest 20 tilts, the rearward movement of the seat support member 50 applies an urging force that compresses the compression coil spring 61 from the front. be done. Therefore, in this embodiment, when the backrest 20 is in the tilted state P2, the compression coil spring 61 is urged by both the backrest 20 and the seat receiving member 50, so that the urging force can be increased. can be done.
- the chair 1 of this embodiment includes a support base body portion 41, and is supported by the support base body portion 41 so as to be rotatable about an axis along the width direction of the support base body portion 41, and is tilted backward from the initial state P1.
- the backrest 20 displaceable to the tilted state P2, the biasing portion 60 biasing the backrest 20 in the tilted state P2 in the direction of returning to the initial state P1, and the biasing force of the biasing portion 60 are adjusted.
- the backrest 20 includes a pair of side walls 382 that are spaced apart in the width direction, the adjustment portion 70 is arranged between the pair of side walls 382, the operation portion 80 extends in the width direction, and is located at the outer end portion in the width direction.
- the adjustment portion 70 is positioned above the support base body portion 41 .
- the adjustment portion 70 includes an action member 74 that acts on the biasing portion 60 and a support member 73 that movably supports the action member 74 .
- the support member 73 is fixed to the backrest 20 .
- the action member 74 includes an action shaft 71 that supports the biasing portion 60, and an adjustment shaft 72 that is arranged in the front-rear direction when viewed from above and allows the action shaft 71 to move along the axial direction,
- the operating shaft 71 is displaced along the adjusting shaft 72 by operating the operating portion 80 .
- the biasing portion 60 has a spring that biases the backrest 20 in the tilted state P2 in the direction of returning to the initial state P1.
- the spring is a compression coil spring 61 that biases the support body 41 in the front-rear direction.
- a seat receiving member 50 for receiving the seat 17 is slidably supported in the front-rear direction on the upper portion of the support base body portion 41. When the seat 20 is displaced toward the tilted state P2, the seat receiving member 50 moves rearward and compresses the compression coil spring 61 from the front.
- the biasing portion 60 is provided on the support base body portion 41 (support structure), but the biasing portion 60 may be provided on the backrest 20. It is possible. The point is that the operating portion 80 should be arranged behind the main turning shaft 42 (axis line) and on one side of the backrest 20 in the width direction.
- the rotating member 38 of the backrest 20 is provided with a pair of side walls 382 spaced apart in the width direction, and the adjusting section 70 is arranged in the space (second internal space S2) between the side walls 382.
- the pair of side walls 382 of the rotating member 38 may not be provided.
- the second internal space S2 is part of the first internal space S1 in the present embodiment, the present invention is not limited to this, and the first internal space S1 and the second internal space S2 may overlap. It may be divided without
- the adjustment section 70 includes the action members (the action shaft 71 and the adjustment shaft 72) that act on the biasing section 60, and the support member 73 that movably supports the action member.
- the action members the action shaft 71 and the adjustment shaft 72
- the support member 73 that movably supports the action member.
- the operation lever 82 may be arranged on the side of the backrest 20 in the width direction. It is also possible to employ a form that protrudes from the rear surface of the member 38 (reference numeral 38b shown in FIG. 8).
- the specific configuration and arrangement of the biasing section 60, the adjusting section 70, and the operating section 80 can be changed as appropriate.
- a pair of compression coil springs 61 are employed as the urging member, but other urging members may be employed.
- the biasing portion 60 may have one or more compression coil springs 61 .
- the biasing portion 60 may have a spring that biases the backrest 20 in the tilted state P2 in the direction of returning to the initial state P1. and leaf springs.
- the extension coil spring may be provided on the opposite side of the compression coil spring 61 shown in FIGS. 7 and 8 with the adjusting shaft 72 interposed therebetween.
- the leaf spring is arranged so that the direction of the generated biasing force (for example, the direction in which the leaf surface of the leaf spring faces) intersects the extending direction of the adjustment shaft 72 shown in FIG. may be provided.
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- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Chairs Characterized By Structure (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
Description
本願は、2021年9月24日に日本に出願された特願2021-155841号に基づき優先権を主張し、その内容をここに援用する。
すなわち、本発明の一態様に係る椅子は、支持構造体と、前記支持構造体に対して前記支持構造体の幅方向に沿う軸線回りに回転可能に支持され、初期状態から後方に傾動させた傾動状態に変位可能な背凭れと、前記傾動状態にある前記背凭れを、前記初期状態に復帰する方向に付勢する付勢部と、前記付勢部の付勢力を調整する調整部と、前記調整部に連結され、前記調整部を作動させる操作部と、を備え、前記付勢部は、前記背凭れ、又は前記支持構造体に設けられ、前記調整部は、前記背凭れに設けられ、前記操作部は、前記軸線より後方、かつ前記背凭れの前記幅方向一方側に配置されている。
また、本発明では、調整部を一対の側壁によって左右方向(幅方向)に遮蔽することができるので、外観の体裁を損なうことを防止できる。
また、この場合には、調整部を支持構造体によって下方から遮蔽することができるので、さらに外観の体裁を損なうことを防止できる。
また、本発明の上記一態様に係る椅子は、前記付勢部が、前記傾動状態にある前記背凭れを前記初期状態に復帰する方向に付勢するばねを有してもよい。このように構成された椅子では、背凭れを初期状態に復帰する方向に付勢する構造を、ばねを用いた、他の動力を用いない簡略化された構造とすることができる。
以下の説明において、説明の便宜上、後述する座17に正規姿勢で着座した着座者が前を向く方向を「前方」と称し、その反対方向を「後方」と称する。また、以下の説明における上下、左右の向きは、着座者が座17に正規姿勢で着座したときの着座者を中心とした向きと合致する向きを意味する。以下の説明では、このときの左右方向を幅方向ともいう。なお、図の一部には、前方を指す矢印FRと、上方を指す矢印UPと、左方を指す矢印LHとが記されていている。
連結部552は、前方ばね反力受軸553に支持される後述する圧縮コイルばね61に干渉しない位置に設けられている。
ばね後端支持部63は、作用軸71に対して前方からばね力が付与された状態になっている。すなわち、作用軸71は、背凭れ20が初期状態P1及び傾動状態P2のいずれの状態であっても、圧縮コイルばね61による反力を受け持っている。
調整部70は、付勢部60(圧縮コイルばね61)の付勢力に作用する作用軸71(作用部材)と、作用軸71を可動に支持する調整軸72(作用部材)と、調整軸72を操作部80に対して回転可能に支持する支持部材73と、を備えている。言い換えれば、調整部70は、付勢部60に作用する作用部材74と、当該作用部材74を可動に支持する支持部材73と、を備え、作用部材74は、付勢部60(圧縮コイルばね61)を支持する作用軸71と、上方から見て軸方向が前後方向に配置され作用軸71を当該軸方向に沿って移動可能とする調整軸72と、を備える。なお、調整軸72の軸線は上方から見て前後方向に平行であるが、言い換えれば、左右方向と直交する方向のうちの上下方向以外の方向であってもよい。
すなわち、操作部80は、操作軸81のうち幅方向の外側端部が側壁382から幅方向に突出している一方、幅方向の内側部分が第二内部空間S2内に配置され、調整部70に連結されている。
そのため、本実施形態では、操作部80をより椅子1の後方の位置で、かつ椅子1の上方となる背凭れの部位(本実施形態では、回動部材38の側壁382)に配置することができる。したがって、着座者は通常の着座状態から手を下げることのみで容易に操作部80の操作レバー82にアクセスすることができ、傾動した背凭れ20の復帰力の調整にかかる操作としての使い勝手を良好にできる。
また、本実施形態では、調整部70を側壁382によって左右方向に遮蔽することができるので、外観の体裁を損なうことを防止できる。
また、この場合には、調整部70を支基本体部41の底板411によって下方から遮蔽することができるので、さらに外観の体裁を損なうことを防止できる。
背凭れ20は、幅方向に離間する一対の側壁382を備え、調整部70は、一対の側壁382の間に配置され、操作部80は、幅方向に延在し、幅方向の外側端部81aが一対の側壁382の間から外方に突出し、幅方向の内側部分81bが一対の側壁382の間において調整部70に連結されている操作軸81と、操作軸81の外側端部81aに設けられた操作レバー82と、を備える。
調整部70は、支基本体部41の上方に位置している。
調整部70は、付勢部60に作用する作用部材74と、該作用部材74を可動に支持する支持部材73と、を備え、支持部材73は、背凭れ20に固定されている。
作用部材74は、付勢部60を支持する作用軸71と、上方から見て軸方向が前後方向に配置され作用軸71を軸方向に沿って移動可能とする調整軸72と、を備え、操作部80の操作によって作用軸71が調整軸72に沿って変位される。
付勢部60は、傾動状態P2にある背凭れ20を初期状態P1に復帰する方向に付勢するばねを有する。
上記ばねは、支基本体部41の上方において前後方向に付勢する圧縮コイルばね61であり、圧縮コイルばね61の後端部が、背凭れ20寄りに位置し、調整部70に連結されている。
支基本体部41の上部には、座17を受ける座受け部材50が前後方向に摺動可能に支持され、圧縮コイルばね61の前端部は、座受け部材50の前部に固定され、背凭れ20が傾動状態P2に向けて変位する際に、座受け部材50が後方に移動して圧縮コイルばね61を前方から圧縮する。
なお、操作部80の配置として、操作レバー82が背凭れ20の幅方向側方に配置されていればよいことから、例えば操作軸81を幅方向の軸線回りに枢支する部位が、回動部材38の背面(図8に示す符号38b)に突出している形態を採用することも可能である。
12 脚柱
17 座
20 背凭れ
20A 背凭れ構造体
30 背凭れ支持部材
38 回動部材
39 副軸
40 支基
41 支基本体部(支持構造体)
42 回動主軸(軸線)
50 座受け部材
60 付勢部
61 圧縮コイルばね
62 ばね前端支持部
63 ばね後端支持部
70 調整部
71 作用軸
72 調整軸
73 支持部材
74 作用部材
80 操作部
81 操作軸
82 操作レバー
382 側壁
S1 第一内部空間
S2 第二内部空間(空間)
Claims (8)
- 支持構造体と、
前記支持構造体に対して前記支持構造体の幅方向に沿う軸線回りに回転可能に支持され、初期状態から後方に傾動させた傾動状態に変位可能な背凭れと、
前記傾動状態にある前記背凭れを、前記初期状態に復帰する方向に付勢する付勢部と、
前記付勢部の付勢力を調整する調整部と、
前記調整部に連結され、前記調整部を作動させる操作部と、を備え、
前記付勢部は、前記背凭れ、又は前記支持構造体に設けられ、
前記調整部は、前記背凭れに設けられ、
前記操作部は、前記軸線より後方、かつ前記背凭れの前記幅方向一方側に配置されている椅子。 - 前記背凭れは、前記幅方向に離間する一対の側壁を備え、
前記調整部は、前記一対の側壁の間に配置され、
前記操作部は、
前記幅方向に延在し、前記幅方向の外側端部が前記一対の側壁の間から外方に突出し、前記幅方向の内側部分が前記一対の側壁の間において前記調整部に連結されている操作軸と、
前記操作軸の前記外側端部に設けられた操作レバーと、を備える請求項1に記載の椅子。 - 前記調整部は、前記支持構造体の上方に位置している請求項2に記載の椅子。
- 前記調整部は、前記付勢部に作用する作用部材と、該作用部材を可動に支持する支持部材と、を備え、
前記支持部材は、前記背凭れに固定されている請求項1乃至3のいずれか1項に記載の椅子。 - 前記作用部材は、前記付勢部を支持する作用軸と、上方から見て軸方向が前後方向に配置され前記作用軸を前記軸方向に沿って移動可能とする調整軸と、を備え、
前記操作部の操作によって前記作用軸が前記調整軸に沿って変位される請求項4に記載の椅子。 - 前記付勢部は、前記傾動状態にある前記背凭れを前記初期状態に復帰する方向に付勢するばねを有する請求項1乃至5のいずれか1項に記載の椅子。
- 前記ばねは、前記支持構造体の上方において前後方向に付勢する圧縮コイルばねであり、
前記圧縮コイルばねの後端部が、前記背凭れ寄りに位置し、前記調整部に連結されている請求項6に記載の椅子。 - 前記支持構造体の上部には、座を受ける座受け部材が前後方向に摺動可能に支持され、
前記圧縮コイルばねの前端部は、前記座受け部材の前部に固定され、
前記背凭れが前記傾動状態に向けて変位する際に、前記座受け部材が後方に移動して前記圧縮コイルばねを前方から圧縮する請求項7に記載の椅子。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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EP22872392.0A EP4406456A1 (en) | 2021-09-24 | 2022-03-07 | Chair |
CN202280062725.6A CN117999017A (zh) | 2021-09-24 | 2022-03-07 | 椅子 |
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Application Number | Priority Date | Filing Date | Title |
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JP2021155841A JP2023046970A (ja) | 2021-09-24 | 2021-09-24 | 椅子 |
JP2021-155841 | 2021-09-24 |
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WO2023047633A1 true WO2023047633A1 (ja) | 2023-03-30 |
Family
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PCT/JP2022/009723 WO2023047633A1 (ja) | 2021-09-24 | 2022-03-07 | 椅子 |
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EP (1) | EP4406456A1 (ja) |
JP (1) | JP2023046970A (ja) |
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JPH0638849A (ja) * | 1992-07-20 | 1994-02-15 | Meekoo Kogyo Kk | 椅 子 |
JPH08214983A (ja) | 1995-02-09 | 1996-08-27 | Kokuyo Co Ltd | 椅 子 |
JP2008302082A (ja) * | 2007-06-08 | 2008-12-18 | Itoki Corp | ロッキング椅子 |
JP2009165662A (ja) * | 2008-01-16 | 2009-07-30 | Kokuyo Co Ltd | 椅子 |
JP2015092901A (ja) * | 2013-11-08 | 2015-05-18 | 株式会社クオリ | 椅子の背もたれ傾動装置 |
JP2021155841A (ja) | 2020-03-27 | 2021-10-07 | 日立金属株式会社 | R−t−b系焼結磁石用合金粉末の製造方法およびジェットミル粉砕システム |
-
2021
- 2021-09-24 JP JP2021155841A patent/JP2023046970A/ja active Pending
-
2022
- 2022-03-07 CN CN202280062725.6A patent/CN117999017A/zh active Pending
- 2022-03-07 EP EP22872392.0A patent/EP4406456A1/en active Pending
- 2022-03-07 WO PCT/JP2022/009723 patent/WO2023047633A1/ja active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0638849A (ja) * | 1992-07-20 | 1994-02-15 | Meekoo Kogyo Kk | 椅 子 |
JPH08214983A (ja) | 1995-02-09 | 1996-08-27 | Kokuyo Co Ltd | 椅 子 |
JP2008302082A (ja) * | 2007-06-08 | 2008-12-18 | Itoki Corp | ロッキング椅子 |
JP2009165662A (ja) * | 2008-01-16 | 2009-07-30 | Kokuyo Co Ltd | 椅子 |
JP2015092901A (ja) * | 2013-11-08 | 2015-05-18 | 株式会社クオリ | 椅子の背もたれ傾動装置 |
JP2021155841A (ja) | 2020-03-27 | 2021-10-07 | 日立金属株式会社 | R−t−b系焼結磁石用合金粉末の製造方法およびジェットミル粉砕システム |
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CN117999017A (zh) | 2024-05-07 |
JP2023046970A (ja) | 2023-04-05 |
EP4406456A1 (en) | 2024-07-31 |
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