WO2002032269A1 - Chaise - Google Patents

Chaise Download PDF

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Publication number
WO2002032269A1
WO2002032269A1 PCT/JP2001/008866 JP0108866W WO0232269A1 WO 2002032269 A1 WO2002032269 A1 WO 2002032269A1 JP 0108866 W JP0108866 W JP 0108866W WO 0232269 A1 WO0232269 A1 WO 0232269A1
Authority
WO
WIPO (PCT)
Prior art keywords
seat
chair
adjustment
unit
link
Prior art date
Application number
PCT/JP2001/008866
Other languages
English (en)
Japanese (ja)
Inventor
Yojiro Kinoshita
Nobuyuki Ueda
Toshiyuki Horiki
Kazuyuki Itoh
Fritz Frenkler
Anette Ponholzer
Original Assignee
Kokuyo Co., Ltd.
Takano Co., Ltd.
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
Priority claimed from JP2000315942A external-priority patent/JP5137277B2/ja
Priority claimed from JP2000315773A external-priority patent/JP2002119355A/ja
Priority claimed from JP2001195603A external-priority patent/JP5067989B2/ja
Application filed by Kokuyo Co., Ltd., Takano Co., Ltd. filed Critical Kokuyo Co., Ltd.
Priority to DE10194641T priority Critical patent/DE10194641T5/de
Publication of WO2002032269A1 publication Critical patent/WO2002032269A1/fr

Links

Classifications

    • 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
    • A47C3/20—Chairs or stools with vertically-adjustable seats
    • A47C3/30—Chairs or stools with vertically-adjustable seats with vertically-acting fluid cylinder
    • 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
    • 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
    • A47C1/03283—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with fluid springs

Definitions

  • the present invention relates to a chair having a plurality of operation units for performing height adjustment of a back seat, adjustment of locking, and the like.
  • a back seat height adjustment function For example, a locking Z fixed switching function, or a front and rear slide function of the seat are typical examples.
  • An operation unit is provided for each of these functions. Conventionally, these operation units are distributed and appropriately arranged at various positions of the chair.
  • the present invention relates to a chair having a plurality of operation units for adjusting the height of a back seat, adjusting a rocking position, and the like. Some or all of them are collectively arranged to improve operability, especially in multifunctional chairs.
  • the operation unit for operating these mechanisms is installed at a position where the occupant can easily operate.
  • this operation unit is connected to an operation reception unit for directly operating each mechanism via a connection means such as a link wire. Because of such a configuration, in this kind of chair, the operation range of the operation unit and the operation range for operating the mechanism of the operation reception unit match.
  • the present invention employs a plurality of operations for adjusting the height of the back seat and adjusting the locking.
  • some or all of the operation sections are collectively arranged to improve the operability, particularly in a multifunctional chair.
  • the chair according to the present invention is a chair having a plurality of operating units for mechanically adjusting the height of the back seat and adjusting the mouth-locking. All or two or more operation units are to be rotated around a predetermined rotation axis, and the rotation axes of each operation unit are arranged on the same axis. This is the feature.
  • the two or more operation parts are arranged below the side edge of the seat such that their rotation axes extend forward and backward. Is preferred. If the occupant extends his hand downward while sitting down, these are the forces that can naturally touch these controls.
  • the two or more operation parts should have the same shape or substantially the same shape as each other. The following are preferred.
  • the two or more operation units are each formed in a plate shape and capable of maintaining a horizontal posture.
  • the chair according to the present invention has a back seat locking function for interlocking and locking the back seat, and only the back is tilted.
  • Back seat tilting function to move the seat back boundary or to move or deform the seat back boundary
  • front tilt angle adjustment function to adjust the seat front tilt angle
  • back seat It has at least a back-seat elevating function for adjusting the height of the seat, and the operation units for mechanically performing the operations of these functions are arranged and arranged in a predetermined area.
  • these operation units are arranged in a line in the front-rear direction, and are disposed below the front right edge of the seat. If the seated person extends his / her hand downward while sitting, they can naturally touch these operation units.
  • the arrangement order of these operation units is determined by the order in which each of the functions is executed. It is easy for the occupant to understand which operation unit corresponds to which function, based on the arrangement order of the members to be seated, making it easier for the occupant to remember and at the same time to operate it more easily. It is configured as follows. Specifically, the highest priority is to place it in front of the operation unit corresponding to the function that acts on the members below. Next, for members that are almost the same height or that are not clearly related to each other, they are placed in front of the operation unit corresponding to the function to be exerted on the preceding member. I'll do that.
  • the member that realizes the backseat elevating function is a gas spring (not shown) attached to the legs, and since it is located at the lowest position, this gas spring must be operated. Operation section is located at the forefront.
  • a member corresponding to the forward tilt angle adjusting function is mainly a seat
  • an operation unit for performing the operation is disposed next to the operation unit.
  • an operation unit for performing the operation is disposed next to the operation unit. Since the members that support the back-seat locking function and the back-tilt function are mainly the back, the operation part for performing the operation is located at the rear end. .
  • these operation parts are assumed to have the same shape or substantially the same shape as each other, so that they can give a sense of unity to improve the appearance and maintain a horizontal posture.
  • the operation parts are arranged so that they are at the same height in the state where the horizontal posture is maintained.
  • Unevenness (not shown) is provided at the part to be touched when operating in the operation direction, so that the operation direction can be easily understood by the user.
  • the chair according to the present invention has a plurality of operating mechanisms such as an elevating mechanism for adjusting the height of the back seat and a locking mechanism.
  • an operation unit for performing an operation for operating each mechanism an operation receiving unit that is a mechanism for directly operating each of the mechanisms, and an operating unit and an operation receiving unit are provided.
  • at least two or more adjustment units are collectively arranged in a predetermined area.
  • the adjustment units can be adjusted at once, and the time and effort required for adjustment can be saved. Also, it is possible to prevent the assembly work and the like from becoming complicated.
  • the adjustment unit is provided with an operation unit It is good to be installed near.
  • the collectively arranged adjusting units be covered with a cover.
  • a cover is used to connect the operation section to the connection means.
  • the one that covers the part is also preferable.
  • a preferable setting portion of the adjusting section may be a lower portion of the seat.
  • connection means a link wire may be used as an example.
  • FIG. 1 is a schematic overall side view showing a normal use position of a chair according to a first embodiment of the present invention and a state in which a lower portion of a backrest is projected forward at that position.
  • FIG. 2 is a schematic overall side view showing a chair in the most inclined position in the embodiment.
  • FIG. 3 is a schematic overall side view showing a state in which only the back of the chair in the embodiment is tilted backward.
  • Fig. 4 shows the chair in the most inclined position in this embodiment.
  • 1 is a schematic overall side view.
  • FIG. 5 is a partial perspective view showing the operation unit in the same embodiment as viewed from the rear.
  • FIG. 6 is a partial plan view of the operation unit in the same embodiment as viewed from below.
  • FIG. 7 is a partial perspective view of the operation unit in the same embodiment as viewed from below.
  • FIG. 8 is a partial plan view of the operation unit in the same embodiment as viewed from the front.
  • FIG. 9 is a partial plan view of the operation unit in the same embodiment as viewed from the front.
  • FIG. 10 is a partial plan view of the operation unit in the same embodiment as viewed from below.
  • FIG. 11 is a cross-sectional view of the back-tilt mechanism in the embodiment.
  • FIG. 12 is a cross-sectional view of the back-tilt mechanism in the embodiment.
  • FIG. 13 is an exploded perspective view of the back tilting mechanism in the embodiment.
  • FIG. 14 is a schematic perspective view of the forward tilt angle adjusting mechanism in the embodiment.
  • FIG. 15 is a diagram showing an operation mode of the forward tilt angle adjusting mechanism in the embodiment.
  • FIG. 16 shows a normal position of the chair in the second embodiment of the present invention and a state in which the lower part of the backrest is projected forward. It is the outline whole side view shown.
  • FIG. 17 is a schematic overall side view showing the chair in the most inclined position in the embodiment.
  • FIG. 18 is a schematic overall side view showing only the back of the chair in the embodiment in the rearwardly inclined position.
  • FIG. 19 is a schematic overall side view showing the chair in the most inclined position in the embodiment.
  • FIG. 20 is a partial perspective view showing the operation unit in the same embodiment as viewed from the rear.
  • FIG. 21 is a partial plan view of the same embodiment as viewed from below the operation unit.
  • FIG. 22 is a partial perspective view of the operation unit in the same embodiment as viewed from below.
  • FIG. 23 is a partial plan view of the operation unit in the same embodiment as viewed from the front.
  • FIG. 24 is a partial plan view of the operation unit in the same embodiment as viewed from the front.
  • FIG. 25 is a partial plan view of the operation unit in the same embodiment as viewed from below.
  • FIG. 26 is a cross-sectional view of the back-tilt mechanism in the embodiment.
  • FIG. 27 is a cross-sectional view of the back-tilt mechanism according to the embodiment.
  • FIG. 28 is an exploded perspective view of the back tilting mechanism in the embodiment.
  • FIG. 29 is a schematic perspective view of the forward tilt angle adjusting mechanism in the embodiment.
  • FIG. 30 is a diagram showing an operation mode of the forward tilt angle adjusting mechanism in the embodiment.
  • FIG. 31 is a schematic side view showing the overall configuration of the chair according to the present invention.
  • FIG. 32 is a schematic bottom view showing the operation unit of the chair according to the present invention.
  • FIG. 33 is a side view showing a third embodiment of the present invention.
  • FIG. 34 is a front view showing the same embodiment.
  • FIG. 35 is a schematic overall side view showing the tilting operation of only the upper portion of the backrest and the tilting operation of only the lower portion of the backrest in the same embodiment.
  • FIG. 36 is a schematic overall side view showing the locking operation in the same embodiment.
  • FIG. 37 is a schematic overall side view showing the elevating operation of the back seat in the same embodiment.
  • FIG. 38 is an exploded perspective view of the locking mechanism in the embodiment.
  • FIG. 39 is an overall plan view of the seat according to the embodiment.
  • FIG. 40 is an overall plan view of the adjustment area in the same embodiment as viewed from below.
  • FIG. 3 is an exploded perspective view showing the battery as viewed from below.
  • FIG. 42 is a cross-sectional view showing the operation unit and the adjustment unit in the same embodiment.
  • FIG. 43 is a cross-sectional view showing the operation unit and the adjustment unit in the same embodiment.
  • FIG. 44 is a cross-sectional view showing the operation unit and the adjustment unit in the same embodiment.
  • FIG. 1 is an overall side view of a chair XI showing an embodiment of the present invention.
  • the chair XI includes a base leg X2, a base X3 attached to the base leg X2, a seat X4 and a back X5 supported by the base X3.
  • the back seats X4 and X5 are linked to lock.
  • Back seat opening locking function, front tilt angle adjustment function to adjust the front tilt angle of the seat X4, back tilt function to tilt only the back X5, and the back seat boundary It also has at least a back seat boundary adjusting function for moving or deforming the portion and a back seat elevating function for adjusting the height of the back seats X4 and X5.
  • the support base X 3 is a long one, and the lower end thereof is fitted to the upper end of the column X 2 a constituting the base leg X 2, and the diagonal forward is provided. It is arranged to extend.
  • the seat X4 has a seating surface X4b mounted on a frame-shaped seating support X4a.
  • the back X5 has a stretching member X5b attached to the front side of the frame-shaped back support rod X5a, and, in appearance, stands continuously from the rear edge of the seat X4. Make a shape that goes up.
  • the backrest surface is provided with cushioning.
  • the back seat locking function is used to move the back seats X4 and X5 to the normal use position (Fig. 1) or the forward tilt position (Fig. 4).
  • a rearwardly inclined position FIG. 2
  • the seat X 4 moves backward while tilting backward.
  • the four-sided link mechanism XK1 connects the ends of four link members X6a to X6a to 6d through support shafts Xtl to Xt4. So that they are rotatably connected to each other, so that each connection point forms a trapezoidal side view square
  • the base X3 has a lower link meno X6a, a seat X4a has an upper link menno ⁇ 'X6b, and a back support rod X5 (a lower frame described later).
  • X5c) also functions as the rear link body X6c, and a dedicated front link body X is provided between the front ends of the base X3 and the seat X4a. 6 d is arranged.
  • a lock for switching the back seat opening locking function between an operable state and an inoperable state is provided.
  • a switching mechanism XK 2 is provided.
  • This locking switching mechanism XK 2 is a first gas spring that is an elastic member that can switch between an elastic free state and a locked state where the length is fixed.
  • one end of the XGS 1 is rotatably connected to a portion displaced from the connecting axis Xt3 with the front link member X6d on the support base X3. Is rotatably coupled to a portion Xt6 deviated from a coupling axis Xt3 with the support base X3 in the front link member X6d.
  • the switching between the free state and the open state of the gas spring XGS 1 is performed by operating the switching button XB 1 provided at the end of the first gas spring XGS 1.
  • the switching button XB1 is connected to a first operation unit X14 described later via a link wire XW1, and the switching button XB1 is connected to the first operation unit X14.
  • the gas spring is operated by operating the operation section X14. Switch the state of XGS 1 and switch between the state where the back seats X 4 and X 5 can be locked and the state where the back seats X 4 and X 5 are fixed at a desired angle. To be able to do so.
  • the forward-tilt angle adjusting function is configured to move the forward moving ends of the back seats X4 and X5 by the four-side link mechanism XK1 to the normal use position (first position) where the seating surface X4b is substantially horizontal. (Fig. 4) and the forward tilting position (Fig. 4) where the seating surface tilts slightly forward (Fig. 4). This is realized by using the forward tilt angle adjustment mechanism XST1. .
  • this forward tilt angle adjusting mechanism XST 1 is provided with a protrusion provided at the upper end of the front link member X 6 d.
  • a portion X6d1 and a regulating member X41 provided corresponding to the portion X6d1 are provided.
  • this restricting member X41 is attached to a connecting shaft X42 provided across a rib X43a of a seat X4a. Therefore, it has a disk shape having a certain thickness and is provided with a sandwiching portion X41a protruding from the outer periphery thereof.
  • an induction cam X44 is attached to one end of the connecting shaft X42 outside the rib X43a of the seat X4a.
  • the rotation direction of the regulating member X41 can be switched between the X direction and the y direction by the action of the inclined cam X45 provided facing the same.
  • the guiding cam X44 is formed in a disk shape, and is provided with a mountain X44m rising from the surface thereof, and is provided with an inclined cam X45 opposite thereto. Located at valley X 45 V I'm trying to make it work.
  • the inclined cam X45 has an inclined surface having a valley X45V and a peak X45m on the surface side facing the induction cam X44.
  • the spring is set so that the peak X44m of the guiding cam X44 is guided to the valley X45V of the inclined cam X45. Pressing is performed in the axial direction with X46.
  • the spring X46 is provided between the inclined cam X45 and the side wall X43b of the seat support X4a, and a lever X47 is provided.
  • the tilt cam X45 is mounted so as to press against the induction cam X44.
  • the front link body X6d, the regulating member X41, the induction cam X44, and the inclined cam X45 are shown in Fig. 15 ( a), that is, the pinching portion X41a of the regulating member X41 is in contact with the projection X6d1 of the front link member X6d and the top plate of the seat. They are in a positional relationship sandwiched between them.
  • the rotation axis XJ is stopped by rotating it 90 degrees or more in the y direction until it reaches a rotation restriction position (not shown). Then, as shown in Fig.
  • the axis XJ reaches the position where the peak X45m of the inclined cam X45 exceeds the peak X44m of the guiding force X44. Rotate while sliding upwards away from guiding cam X 4 4 It is done. Since the inclined cam X45 is pressed in the direction of the induction cam X44 by the spring X46, the peak of the induction cam X44 is in this state. X44m tries to rotate down in the X direction by sliding down the peak X45m of the inclined cam X45, but the clamping member X41a of the regulating member X41 is in front. Since it is sandwiched between the projecting portion X6d1 of the link member X6d and the top plate X43c of the seat support X4a, the regulating member X41 and the induction cam X44 are provided. Cannot rotate.
  • the peak X44m of X44 is now located at the valley X45V of the inclined cam X45.
  • the tilt cam X45 also rotates back to the X direction, and rotates about 90 degrees from the state of the normal use position (Fig. 15 (a)). Stop in the state where it was made.
  • the front The link member X6d is displaced in a direction to return to its original position, and the rotation of the front link member X6d at the position sandwiching the holding portion X41a of the regulating member X41. Be regulated.
  • the inclination angle of the seat support X4a on which the seat X4 is mounted is set to be substantially horizontal, and the seat is in the normal use position (the position where the front link member X6d stands up). It will be kept in a state.
  • the back tilting function is a function that can tilt only the upper part of the back X5, and is realized by the back tilting mechanism XK3.
  • the back tilting mechanism XK 3 includes a back support rod X 5 a, a lower frame X 5 c located below the seat support X 4 a, and a lower frame X 5 c.
  • the upper frame X5d which is the part corresponding to the backrest surface as the main part, is rotatably connected to the frame X5c via the support shaft Xt5 extending horizontally and horizontally.
  • the upper frame X5d is positioned between the standing position (shown in Fig. 1) and the most inclined position (shown in Fig.
  • the upper frame X5d receives the force from the spring XS1, which is an elastic member, in the direction in which the upper frame X5d is always in the standing posture. Is arranged in the lower frame X5c so that the direction of expansion and contraction thereof coincides with the longitudinal direction of the lower frame X5c.
  • the setting position of the support shaft Xt5 is between the support shafts Xt1 and Xt2 constituting the four-sided link mechanism XK1.
  • the tilting center of the back X5 when the back X5 is tilted backward is different from the tilting center of the back X5 when the back X5 is tilted backward by the back seat locking function. I am trying to do it. Note that the spring XS1 is omitted in FIGS. 2 and 4.
  • the back-tilt switching mechanism XK4 for switching the back-tilt function between the operable state and the inoperable state is provided.
  • the back-tilt switching mechanism XK4 is, as shown in detail in FIGS. 11 to 13, in a state in which the rotation of the upper frame X5d with respect to the lower frame X5c is prohibited. It is designed to switch between the states that can be accommodated. Specifically, it is a portion of the upper frame X5d and the lower frame X5c that is deviated from the support shaft Xt5 and overlaps in a side view in a standing posture.
  • Recesses X5d1 and X5cl are provided in the respective portions, and the pins X7 are inserted into the right and left over the respective recesses X5dl and X5c1. Thus, it becomes more inoperable, and when pin X7 is removed, it becomes more operable.
  • Pin X7 penetrates through hole X5c1, which is a concave portion on lower frame X5c side, from the inside and penetrates through hole X5d1, which is a concave portion on upper frame X5d side.
  • a flange X7a is provided on the side opposite to the insertion end of this pin 7, and between the flange X7a and the inner surface of the upper frame X5d.
  • the seat X4a which is positioned more inward than 5c, has an opening on the outer side surface X4a2 to allow the pin X7 to be inserted.
  • the pin 1 is provided with a pressing member X 8 that moves forward and backward inside the pin and the hole X 4 a 1.
  • the pin X7 is pushed outward so as to fit into the recess X5d1 of the upper frame X5d.
  • the pressing member X8 has a pressing position (shown in FIG.
  • the operation of the first operation unit X14 is performed by being transmitted via the motion conversion mechanism XD1 (shown in Figs. 6 and 13).
  • the motion conversion mechanism XD 1 is rotatably supported by a seat X 4 a and a link frame X 9 having one end rotatably connected to a pressing member X 8, and the link frame A rotating arm X10 having a rotating end rotatably connected to the other end of X9, and one end connected to a rotating end of the rotating arm XI0; A link wire XW1a for transmitting the operation of the first operation section X14 and rotating the rotating arm XI0, and a force.
  • the first operation unit X14 is operated.
  • the pressing member X8 is driven to the pressing position, the pin X7 straddles the through holes X5dl and X5cl.
  • the back X5 cannot be tilted.
  • the pin X7 comes out of the recess X5d1 of the upper frame X5d by the coil spring XS2, and the back X5 is tilted. The rotation is allowed to be performed.
  • the reentrant end face of the pin X7 In order for the pin X7 to come out of the through-hole X5d1 of the upper frame X5d, the reentrant end face of the pin X7 must be in contact with the outer surface of the seat X4a.
  • the length of pin X7 is set so that it is located further inside. That is, in order for the pin X7 to escape from the through-hole X5d1 of the upper frame X5d, it is necessary to insert the pin X7 into the hole X4a1. As shown in Fig.1 and Fig.2, this pin ⁇ hole X4 al has the seats X4 and X5 in the normal use position in the seat locking function.
  • the side frame overlaps with the through-hole X5c1 on the lower frame X5c side, and in a state where the n seats X4 and X5 are at positions other than the normal use position, ⁇ 0 self-recess X5 It does not overlap with d 1 and X 5 c 1 in side view. Therefore, the back seat X 4 X 5 is normal, and the pin X 7 is connected to the upper frame X 5 d in the recess X to enable the function of tilting the back in a position other than the use position. Even if you try to pull out from 5 dl, the reentrant end face of pin X7 does not come off against the outer face X4a2 of seat X4a, and in this state the tilting function is not performed. Does not work.
  • the first operation unit X14 switches the first gas spring XGS1 between the free Z lock state and the pressing member X8 between the pressing position Z and the non-pressing position. Is responsible for the two functional operations of In the present embodiment, when the first operation unit X14 is operated in a certain direction, the first gas spring XGS1 is brought into a free state, and the pressing member is moved to the pressing position. Then, when the first operation section X14 is operated in the opposite direction, the first gas spring XGS1 is locked and the pressing member X8 is moved to the non-pressing position. I am trying to make it happen.
  • the back seat boundary movement function is a function that can change the rear inclination angle of the seating surface and the front-rear projection dimension of the lower part of the backrest surface.
  • a tilting body X12 that is tiltably arranged behind a and a rubber support arm X13 that is integrally provided at the rear end of the tilting body X12 are used.
  • the tilting body XI 2 is a pair of left and right frame-like members extending below the rear end of a cushion or the like constituting the seating surface X 4 b and extending forward and backward. It is pivotally connected to the back support rod X5 (lower frame X5c) via the support shaft Xt1.
  • a lower position XL (shown by a solid line in FIG. 1) where the rear part X 4 bl of the seating surface is substantially flush with the front part X 4 b 2 of the seating surface, and the rear part X 4 b 1 of the seating surface
  • Between the upper position XU shown by the two-dot chain line in FIG. 1) so that the rear end is higher than the front end.
  • the lamp support arm X13 is a frame-shaped one that bends at a substantially right angle from the rear end of the tilting body X12 and extends integrally from the side, as viewed from the side.
  • the tension member X5b that forms the lower part of the sagging surface is supported from the left and right.
  • tilting body XI 2 is lower As it moves from the position XL to the upper position XU, it protrudes forward, and the lower part of the backrest surface protrudes forward while increasing the tension of the tension member X5b at that portion.
  • At the tip of the rubber support arm X13 there is a bent part XI3a which is bent backward in an arc shape to improve the feeling of hitting the hip bone. .
  • a switching mechanism XK5 for switching the operation of the back seat boundary portion moving function between inoperative and inactive is provided.
  • the switching mechanism XK5 can be extended and contracted by a free state and a long state. It is configured using a second gas spring XGS2, which is an elastic member that is switched to a locked state in which the lock is fixed. Then, one end of the second gas spring XGS2 is connected to the back support rod X5a (more specifically, the lower frame X5c) and the seating axis X4a by the connecting axis Xtl.
  • the other end of the tilting body XI 2 is pivotally connected to a portion deviated from the connecting axis Xt 5 with the back support rod X 5 a in the tilting body XI 2.
  • the tilting body X12 is tilted forward by the extension force of the second gas spring XGS2.
  • the moving force is applied.
  • the switching button XB5 is connected to a second operation section X15 described later via a link wire XW2, and is used for operating the second operation section X15. Therefore, the state of the second gas spring XGS 2 can be switched to move or deform the back seat boundary. And a state in which the back seat boundary portion is fixed in a desired form.
  • the seat elevating function is to raise and lower the back seats X4 and X5, and the support X2a constituting the base leg X2 is connected to the third gas spring XGS3 (shown in FIG. 7).
  • the length of the column X2a is changed by the expansion and contraction of the third gas spring XGS3, and the back seats X4 and X5 are raised and lowered.
  • the switching operation of the third gas spring XGS3 is performed by a fourth operation section X17 described later.
  • the first operation unit X14 to the fourth operation unit X17 are arranged in this order in a back and forth direction from the rear force to the front. Are arranged below the right edge of the seat.
  • each of the operation units X14 to X17 has a rectangular thin plate shape, and has the same shape except for the base end. .
  • the base end is rotatably supported around a horizontal axis extending in the front-rear direction by an operation section support frame XI8 fixed to the seat support X4a.
  • the operating end which is the tip, is set to protrude outward.
  • the operating ends are also at the same height.
  • the rotation axes XI9 of the operation units X14 to X17 are set to be on the same line.
  • the first operation section X 14 switches the locking function between activation and deactivation, as well as the desired locking. This is for fixing the back seats X4 and X5 at the swing angle, but also for switching the back tilting function on and off. Then, as shown in FIG. 8, the operating end is protruded outward, and the operating end is pivoted downward from this horizontal posture (solid line in FIG. 8). A stable toggle operation is performed in two postures: a vertical posture (broken line in Fig. 8). Specifically, the connection point X14a of the link wire XW1 to the first operation unit X14 is set at a position deviated from the rotation axis X19 of the first operation unit X14.
  • the tube fixing point XI provided on the operation unit support frame X18 is set.
  • 8a1 is set at a position that straddles a virtual line connecting the rotation axis XI9 of the first operation unit XI4.
  • the link wire XW1 is always subjected to a force to pull the first operation portion X14 inward by an elastic member (not shown) or the like. With this configuration, the above-described toggle operation is performed. In the horizontal position, the locking function is inactive, and in the vertical position, the locking function is active.
  • the link wire XW1 branches on the way to XWla and XWlb, and is connected to the rotating arm XI0 and the first gas spring XGS1, respectively.
  • the top surface of the tip is partially provided with irregularities XQ so that it can be recognized with a finger.
  • the second operation unit X 15 switches the operation of the movement function of the back seat boundary portion movement function and the non-operation thereof as well as the desired operation. It is for fixing the back seat boundary part in the form, and is connected to the operation button of the second gas spring XGS 2 via the link wire XW 2. In a natural state where no external force is applied, this is urged by an elastic member such as a spring (not shown) so as to be in a horizontal posture, and the momentary switch is provided. Perform appropriate actions. However, in this horizontal posture, the second gas spring XGS 2 is fixed. Then, as shown in FIG.
  • the third operating unit XI 6 shown in FIG. 10 is configured to move the forward moving ends of the back seats X 4 and X 5 by the four-side link mechanism XK 1 to the seating surface X 4 b. It is intended to switch between the normal use position where is substantially horizontal and the most forwardly inclined position where the seating surface X4b is slightly inclined forward. Specifically, when the vehicle is in the horizontal posture, the seating surface X4b can be set to the normal use position, and when it is set to the vertical posture, the seating surface X4b can be set to the frontmost inclined position. Is set to.
  • the fourth operation unit XI7 is for adjusting the height of the back seats X4 and X5, and is an operation button of the third gas spring XGS3. It is connected to link via link wire XW4. This is a natural state without external force. In this state, it is urged by an elastic member such as a panel (not shown) so as to be in a horizontal posture, and performs an operation like a momentary switch. However, in this horizontal posture, the third gas spring XGS 3 is fixed. Then, when the operator rotates the end of the fourth operation portion X17 upward against the urging force, the third gas spring XGS3 is brought into a free state. It is configured so that the back seats X4 and X5 can be raised and lowered. In addition, the lower surface of the end of the fourth operation unit X17 has unevenness partially so as to be recognized by a finger.
  • the present invention is not limited to the above-described embodiment, and the operation unit is not limited to the above four.
  • the operation section of this function should be installed at the same height as the existing operation section to improve operability. Can be improved.
  • the relative distance between the operation units may vary depending on the operation of the slide or the like.
  • each operation unit does not need to be the same, the width may be changed, and the arrangement interval is not limited to the equal interval.
  • FIG. 16 is an overall side view of the chair Y1 showing one embodiment of the present invention.
  • the chair Y1 has a base leg Y2, a base Y3 attached to the base leg Y2, and a base Y3. It basically has a seat Y 4 and a back Y 5 supported by Y 3, and functionally, as shown in FIGS.
  • the back seat Y 4 Locking function of the back seat for locking the ⁇ 5 in conjunction with the front sloping angle function for adjusting the forward sloping angle of the seat ⁇ ⁇ 4, and the back sack 5 only Back tilting function for tilting the seat, back seat boundary adjusting function for moving or deforming the back seat boundary, and a back seat for adjusting the height of the back seats ⁇ 4 and ⁇ 5 It has at least a lifting function.
  • the support base ⁇ 3 is a long one, and the lower end thereof is fitted to the upper end of the support Y2a constituting the base leg ⁇ 2, and the support base ⁇ 3 is obliquely forward. It is arranged to extend.
  • the seat Y4 has a seat Y4b mounted on a frame-shaped seat Y4a.
  • the back Y5 is attached to the front side of the frame-shaped back support rod Y5a.
  • Y5b It is equipped with Y5b, and has a shape that stands up continuously from the rear edge of the seat Y4 in appearance.
  • the backrest surface is provided with cushioning.
  • the back seat locking function is used to set the back seat Y4, ⁇ 5 to the normal use position (Fig. 16) or the forward tilt position described later. (Fig. 19) and the tilting movement in conjunction with the last tilt position (Fig. 17). Therefore, a four-sided link mechanism ⁇ 1 interposed between the support base Y 3 and the back seats ⁇ 4, ⁇ 5 is used to tilt the back ⁇ 5 backward. When this is done, the seat ⁇ 4 is moved backward while tilting backward.
  • the four-sided link mechanism YK1 connects the ends of the four link members Y6a to Y6d to support shafts Yt1 to Yt. 4 so as to be rotatably connected to each other so that each connection point forms a trapezoidal side view in a side view, so that the lower link member Y 6 a, Function as upper link meno Y6b on seat Y4a and rear link menno Y6c on back support rod Y5 (lower frame Y5c described later) And a dedicated front link member Y6d is arranged between the front ends of the support Y3 and the seat Y4a.
  • the back seat locking function is used to switch between the operable state and the inoperable state.
  • a locking switching mechanism YK2 is provided.
  • This locking switching mechanism YK 2 has a free and stretchable free state and a fixed length, and a first gas spring as an extendable member that can switch between a locked state and a locked state.
  • One end of the ring YGS 1 is rotatably coupled to a portion displaced from the coupling axis Yt 3 with the front link meno Y 6 d on the support base Y 3, and other The end is pivotally connected to a portion Yt6 deviated from a coupling axis Yt3 with the support Y3 in the front link meno Y6d.
  • the gas spring YGS 1 When the gas spring YGS 1 is in a free state, its extension force causes A forward leaning force acts on the member Y6d, and the back seats Y4 and Y5 are biased in the forward leaning direction.
  • the switching between the free state and the open state of the gas spring YGS 1 is performed by using the switching button YB 1 provided at the end of the first gas spring YGS 1.
  • This switching button YB1 is connected to a first operation section Y14, which will be described later, via a link wire YW1.
  • the state of the gas spring YGS1 is switched, and the state in which the back seats Y4 and ⁇ 5 can be locked is performed.
  • the back seats ⁇ 4 and ⁇ 5 can be switched to a fixed state at a desired angle.
  • the forward-tilt angle adjustment function is configured to move the forward moving ends of the back seats ⁇ 4 and ⁇ 5 by the four-side link mechanism ⁇ ⁇ 1 to the normal use position (the second position) where the seating surface Y 4 b is substantially horizontal. 16) and the most inclined position (Fig. 19) where the seating surface is inclined slightly forward.
  • the forward inclination adjustment mechanism YST1 is used. Is realized.
  • the forward tilt angle adjusting mechanism YST1 is provided with a protrusion provided at the upper end of the front link member Y6d.
  • a portion Y6d1 and a regulating member Y41 provided corresponding to the portion Y6d1 are provided.
  • the restricting member Y41 was attached to a connecting shaft Y42 provided across a rib Y43a of the seat Y4a. It has a disc-like shape with a certain thickness, and has a sandwiching part Y 4 protruding from the outer periphery thereof. It is configured with la. Also, this connecting axis Y
  • an induction cam Y44 is attached to the outside of the rib Y43a of the seat Y4a, and it is provided to face this.
  • the rotation direction of the regulating member Y41 can be switched between the X direction and the y direction by the action of the tilt cam Y45.
  • This guiding cam Y44 is formed in a disk shape, and is provided with a peak Y44m rising from the surface thereof, and a valley Y44 of the facing inclined cam Y45. It is set to 45 V.
  • the inclined cam Y 45 has a slope having a valley Y 45 V and a peak Y 45 m on the side facing the guiding cam Y 44.
  • the peak Y4 4m of the guiding cam Y44 is also the valley Y4 of the inclined cam Y45.
  • the spring is pressed in the axial direction with a spring Y46 so that it is guided to 5 V.
  • the spring Y46 is provided between the inclined cam Y45 and the side wall Y43b of the seat Y4a, and has a lever Y47.
  • the inclined cam Y45 is mounted so as to press against the induction cam Y44.
  • the axis YJ reaches the position where the peak Y45m of the inclined cam Y45 exceeds the peak Y44m of the induction cam Y44. It is rotated while sliding upwards away from the guide cam Y44. Since the inclined cam Y45 is pressed in the direction of the guide cam Y44 by the spring Y46, in this state, the ridge of the guide cam Y44 is in this state.
  • Y 4 4 m is inclined cam
  • the guiding force Y44 also changes in the opposite direction to the operation direction of the tilt cam Y45.
  • the peak ⁇ 44 m of the guide cam Y 44 is located at the valley Y 45 V of the inclined cam Y 45.
  • the tilt cam Y 45 also rotates back to the X direction, and is rotated by about 90 degrees from the state of the normal use position (FIG. 30 (a)). Stop in the state where it was made.
  • the regulating member Y45m exceeds the peak Y44m of the induction cam Y44, and the peak Y44m of the induction cam Y444 is inclined by the pressing force of the spring Y46. Rotate in the y direction so that it slides down the hill Y 45 m. Then, based on this rotation, the regulating member
  • the peak of Y 4 1 Y 4 1 a is the protrusion of the front link Men 'Y 6 d
  • the seat Y 4 and the back Y 5 are tilted back again.
  • the four-side link mechanism YK1 is deformed, and the front link member 6d rotates in the X direction around the axis Yt3.
  • the projecting portion Y6d1 of the front link member Y6d is turned downward, and the regulating member Y41 is moved downward.
  • the space provided between the sandwiching portion Y62 and the top plate Y43c of the seat Y4a is opened, and the sandwiching portion Y41a of the regulating member Y41 becomes Rotate so that it is sandwiched in the space.
  • the rotation of the front link member Y6d is restricted at the position sandwiching the sandwiching portion Y41a of Y41.
  • the inclination angle of the seat support Y 4 a on which the seat 4 is mounted is set to be substantially horizontal, and the tilt angle of the normal use position (the position where the front link member Y 6 d stands) is set. You will be kept in a state.
  • the back tilting function is a function capable of tilting only the upper part of the back Y5, and is realized by the back tilting mechanism YK3.
  • the back tilting mechanism YK 3 includes a back support rod Y 5 a and a lower frame Y 5 c located below the seat support Y 4 a.
  • the upper frame which is rotatably connected to the lower frame Y5c via a support shaft Yt5 extending horizontally and horizontally, and which is a portion corresponding to a backrest surface as a main part.
  • the upper frame Y5d is the lower frame, assuming that the upper frame Y5d
  • Y5c a device that can be tilted between a standing position (shown in Fig. 16) and a tilted position (shown in Fig. 18) It is.
  • the upper frame Y5d receives power from the spring YS1, which is an elastic member, in the direction in which the upper frame is always in the upright posture, and this spring is used.
  • the YS 1 is arranged in the lower frame Y5c so that its expansion and contraction direction coincides with the longitudinal direction of the lower frame Y5c.
  • the setting position of the support shaft Yt5 is between the support shafts Ytl and Yt2 constituting the four-sided link mechanism YK1.
  • the center of tilt of the back Y5 when tilted is different from the center of tilt of the back Y5 when the back Y5 is tilted backward by the back seat locking function. Yes.
  • the spring YS1 is omitted.
  • the back-tilt switching mechanism YK4 for switching the back-tilt function between the operable state and the inoperable state is provided.
  • this back-tilt switching mechanism YK4 is in a state where the rotation of the upper frame Y5d with respect to the lower frame Y5c is prohibited and the allowable state. It is intended to switch between the states that are performed. Specifically, it is a portion of the upper frame Y5d and the lower frame Y5c which is deviated from the support axis Yt5, and is a side view overlap in a standing posture.
  • the recesses Y5d1 and Y5cl are provided in the respective portions to be inserted, and the pins Y7 are inserted into the right and left over the recesses Y5dl and Y5c1. In this state, it becomes more inoperable, and when pin Y7 is removed, it becomes more operable.
  • Pin Y7 is a recess on the lower frame Y5c side from inside. It penetrates through the through hole Y5c1 and is inserted into the throughhole Y5d1, which is a concave part on the upper frame Y5d side. A portion Y7a is provided, and a coilless spring YS2 is interposed between the flange portion Y7a and the inner surface of the upper frame Y5d. As shown in FIG. 28, when no external force is applied, as shown in FIG. 28, at least the pin Y7 comes out of the through hole Y5d1 of the upper frame Y5d. It is set as follows.
  • the seat Y4a positioned inward from the upper frame Y5d and the lower frame Y5c has an opening on the outer side surface Y4a2, and the pin A pin insertion / removal hole Y4a1 into which Y7 can be inserted is provided, and a pressing member Y8 that moves forward and backward inside the pin ⁇ removal hole Y4a1 Then, the pin Y7 is pushed outward by the pressing member Y8 so that the pin Y7 fits into the recess Y5d1 of the upper frame Y5d. ing .
  • the pressing member Y8 has a pressing position (shown in FIG.
  • Y8a is set to be able to advance and retreat from the non-pressing position (shown in Fig. 27) in which Y8a is drawn inward from the outer surface Y4a2.
  • the operation of the first operation section Y14 is performed by being transmitted via a motion conversion mechanism YD1 (shown in FIGS. 21 and 28).
  • the motion conversion mechanism YD 1 is rotatably supported by a link frame Y 9, one end of which is rotatably connected to the pushing member Y 8, and a seat support Y 4 a.
  • a rotating arm Y10 having a rotating end rotatably coupled to the other end of Y9, and one end coupled to a rotating end of the rotating arm Y10.
  • a link wire YW1a for transmitting the operation of the first operation section Y14 and rotating the rotating arm Y10 is provided.
  • the first operation unit Y14 is operated.
  • the pressing member Y8 is driven to the pressing position, the pin Y7 is inserted across each of the through holes Y5dl and Y5cl, and the back Y5 cannot be tilted. The rotation is prohibited.
  • the reverse operation is performed, the pin Y7 is pulled out of the recess Y5dl of the upper frame Y5d by the coil spring YS2, and the back Y5 is pulled out. It is in a rotation permissible state in which it can be tilted.
  • pin Y7 In order for the pin Y7 to be pulled out of the through hole Y5d1 of the upper frame Y5d, the pin Y7 must be inserted outside the seat Y4a.
  • the length of pin Y7 is set so that it is located inside the side. In other words, in order for pin Y7 to come out of through-hole Y5d1 of upper frame Y5d, it must be inserted into pin ⁇ escape hole Y4a1.
  • this pin ⁇ hole Y4 al has the back seat Y4 and Y5 in the back seat locking function.
  • the first operation unit Y 14 is used to switch between the free Z locking state of the first gas spring YGS 1 and the switching of the pressing position Z of the pressing member Y 8 to the non-pressing position.
  • the first operation unit Y14 when the first operation unit Y14 is operated in a fixed direction, the first gas spring YGS1 is set to a free state.
  • the pressing member is positioned at the pressing position and the first operation unit Y14 is operated in the opposite direction, the first gas spring YGS1 is locked. Then, the pressing member Y8 is positioned at the non-pressing position.
  • the back seat boundary movement function is a function that can change the inclination angle of the rear part of the seating surface and the length of the front and rear protruding parts of the lower part of the backrest surface. 4
  • a tilting body Y12 which is arranged to be tiltable to the rear of a and a lamp support arm Y13 integrally provided at the rear end of the tilting body Y12.
  • the tilting body Y12 is a pair of left and right frame-like members extending under the rear end of the cushion or the like constituting the seating surface Y4b and extending below the front end.
  • the back support rod Y5 lower frame Y5c
  • the support shaft Ytl Yes.
  • the lower position YL indicated by the solid line in FIG. 16
  • the rear part Y 4 bl of the seating surface is substantially flush with the front part Y 4 b 2 of the seating surface, and the rear part Y 4 b 1 of the seating surface
  • It is tiltably supported between an upper position YU (shown by a two-dot chain line in Fig. 16) where the rear end is higher than the front end.
  • the lamp support arm Y13 is a frame-like body that is bent at a substantially right angle from the rear end of the tilting body Y12 and extends integrally from the side, as viewed from the side.
  • the tension member Y5b to be formed is supported from left and right. Then, as the tilting body Y1 2 moves from the lower position YL to the upper position YU, it protrudes forward, and the lower part of the backrest surface protrudes forward while increasing the tension of the tension member Y5b at that portion.
  • the distal end of the rubber support arm Y13 is provided with a bent portion Y13a which is bent in an arc shape toward the rear, so that a feeling of hitting the hip bone is improved.
  • a switching mechanism YK5 for switching the operation / non-operation of the back seat boundary portion moving function is provided.
  • the switching mechanism YK5 is fixed in a stretchable free state and length. It is configured using a second gas spring YGS2 which is an elastic member that can be switched to a locked state. Then, one end of the second gas spring YGS2 is turned around the connecting axis Yt1 between the back support Y5a (more specifically, the lower frame Y5c) and the seat Y4a.
  • the other end of the tilting body Yl2 is rotatably connected to a portion deviated from the connecting axis Yt5 with the back support rod Y5a in the tilting body Yl2.
  • the switching button YB5 is connected to a second operation section Y15 described later via a link wire YW2, and the operation of the second operation section Y15 is performed. Therefore, the state of the second gas spring YGS 2 can be switched to move or deform the boundary of the seat, and the state of fixing the boundary of the seat in a desired shape. It is designed to be switched at once.
  • the seat elevating function is to raise and lower the back seat Y4, ⁇ 5, and the column ⁇ 2a, which constitutes the base leg ⁇ 2, is connected to the third gas spring YGS3 (see Fig. 22). ), The length of the column Y2a is changed by the expansion and contraction of the third gas spring YGS3, and the back seats Y4 and ⁇ 5 are raised and lowered.
  • the switching operation of the third gas spring YGS3 is performed by a fourth operation unit 17 described later.
  • the first operation section ⁇ 14 to the fourth operation section ⁇ 17 are sequentially moved from the rear to the front in this order. They are arranged in a line in the front and rear, and are gathered and arranged below the right edge of the seat.
  • each of the operation units Yl4 to Y17 has a rectangular thin plate shape and has the same shape as each other except for the base end. is there . Then, the seat Y 4 a is fixed to The base end is pivotally supported around a horizontal axis extending back and forth by the fixed operating section support frame Yl8, and the operating end is the distal end in a horizontal posture. Is set to protrude outward. In the same horizontal position, the operating ends are also at the same height.
  • the rotation axes of the operation units Y14 to Y17 are set to be on the same line.
  • the first operation unit ⁇ 14 switches the locking function between the operation state and the non-operation state, and sets the back seat ⁇ at a desired locking angle. While it is for fixing 4 and ⁇ 5, it is also for switching between the activation and deactivation of the tilting function. Then, as shown in Fig. 23, the operating end is protruded outward (solid line in Fig. 23), and from this horizontal posture, the operating end is turned downward.
  • a stable toggle operation is performed in two postures, that is, the vertical posture (dashed line in Fig. 23) and the vertical posture. Specifically, the connecting point Y14a of the link wire YW1 with respect to the first operating section ⁇ 14 is deviated from the rotation center Y19 of the first operating section Y14.
  • the first unit Y14 As the first operation unit Y14 rotates between the horizontal position and the vertical position, the first unit Y14 is mounted on the operation unit support frame Y18.
  • the fixed point Y18a1 is set to a position across a virtual line connecting the rotation center Y19 of the first operation unit Yl4 with the rotation center Y19.
  • a force is always applied to the link wire YW1 in a direction in which the first operation portion Y14 is pulled inward by an elastic member or the like (not shown).
  • the above-mentioned toggle They are working. In the horizontal position, the locking function is not activated, and in the vertical position, the locking function is activated.
  • the link wire YW1 branches off midway to become YWla and YWlb, which are connected to the rotating arm Y10 and the first gas spring YGS1, respectively.
  • the top surface of the tip is partially provided with unevenness YQ so that it can be recognized by a finger.
  • the second operation section ⁇ 15 is used to switch the operation of the movement function of the back seat boundary portion and the non-operation thereof, and to fix the back seat boundary portion in a desired form. Therefore, it is connected to the operation button of the second gas spring YGS 2 via the link wire YW 2. This is urged by an elastic member such as a panel (not shown) so as to be in a horizontal posture in a natural state where no external force is applied. Performs a touch-like operation. However, in this horizontal position, the second gas spring YGS2 is fixed. Then, as shown in FIG. 24, when the operator rotates the end of the second operation portion ⁇ 15 upward against the urging force, the operator operates the second gas spring.
  • the tilting body ⁇ 12 and the lumbar support arm 313 can be tilted when the YGS 2 is in a free state. On the lower surface of the distal end portion, there are provided irregularities YQ partially so that the finger can recognize it.
  • the third operation unit ⁇ 16 shown in FIG. 25 is, as described above, the front moving ends of the back seats 4 and ⁇ 5 by the four-side link mechanism YK1 and the seating surface Y4.
  • Normal use position where b is almost horizontal It is intended to switch between the seating position and the most forwardly inclined position where the seating surface Y4b is slightly inclined forward. Specifically, if the seat is in the horizontal position, the seating surface Y4b can be set to the normal use position, and if the seat is in the vertical position, the seating surface Y4b can be set to the forward tilt position. Has been set.
  • the fourth operation section Y17 is for adjusting the height of the back seats Y4 and Y5, and is an operation button of the third gas spring YGS3.
  • this is urged by an elastic member such as a spring (not shown) so as to be in a horizontal posture, and is not provided.
  • the third gas spring YGS3 is fixed in this horizontal posture.
  • the operator rotates the end of the fourth operating portion Y17 upward against the urging force, the third gas spring YGS3 is brought into a free state. Therefore, it is configured so that the back seat Y4, ⁇ 5 can be moved up and down.
  • the lower surface of the end of the fourth operation unit 17 is partially provided with unevenness so that it can be recognized by a finger.
  • the operation units ⁇ 14 to ⁇ 17 are collectively arranged, the position is easy to understand, and the operation in the multifunctional chair ⁇ 1 is particularly easy. Can be improved. Furthermore, for example, it is possible to simultaneously operate a plurality of operation units ⁇ 14 to ⁇ 17 with one hand, thereby providing an unprecedented use method. .
  • the height of each operation unit ⁇ 14 to ⁇ 17 in the horizontal position is the same. Therefore, the operating status of the operated operation units ⁇ 14 to ⁇ ⁇ 17 can be easily recognized by comparing with the positions of the other operation units Y14 to Y17.
  • the present invention is not limited to the above-described embodiment, and the operation unit is not limited to the above four.
  • the operation unit is not limited to the above four.
  • operability can be improved by providing the operation unit for this function at the same height as the existing operation unit. It can be improved.
  • the relative distance between the operation units may vary due to the operation of the slide or the like.
  • each operation section does not need to be the same, and ⁇ ; may be changed, and it is needless to say that the arrangement intervals are not limited to equal intervals.
  • FIG. FIG. 33 and FIG. 34 show a side view and a front view of a chair 1 showing an embodiment of the present invention, respectively.
  • this chair 1 has a base leg 2 supporting a back 5 and a seat 6, so that the use posture is suitable for office work and the like.
  • the base leg 2 In addition to being able to take a position, the base leg 2 must be able to take a posture suitable for rest and re-reflection as appropriate.
  • the lifting mechanism for adjusting the height of the back seat, and the back 5 and the seat are linked so that the mouth is locked.
  • a backrest lowering mechanism S to be used is provided.
  • the base leg 2 has a rotating shaft protruding upward from the center of the leg blade, so that the seat and the backrest supported thereon are rotated. It can be turned around the shaft.
  • the elevating mechanism P incorporates a gas spring 21 into the rotation shaft of the base leg 2 and operates the gas spring 21 as appropriate to move the back seat. It is designed to be able to lock to any of the vertical positions.
  • the back 5 is provided with a lower backrest frame 50 and an upper backrest frame 55, so that both frames 5005 are both inside the link element 7b. It is rotatably attached to a rotating shaft 72 provided on the portion.
  • the seat 6 can be detachably attached to the seat 4.
  • the locking mechanism Q connects the support 3 attached to the base leg 2, the seat 4 supporting the seat 6, and the connection between the support 3 and the seat 4.
  • the support base 3 has a V-shape composed of a rigid member such as an aluminum die cast. It is fixed and the tip protrudes obliquely upward.
  • a torsion bar 70 capable of accumulating and releasing the elastic force in the torsion direction through the rotating shaft 71 is provided.
  • the link element 7a is rotatably mounted at one end in front of the support base 3 via a rotation shaft 30 and at the other end on the front back surface of the seat 4 via a rotation shaft 60. Since it is a plate-shaped member mounted as possible, at least the rotating shaft 60 is detachable from a bearing provided on the seat 4.
  • link element 7 b One end of the link element 7 b is fixed to the rotation shaft 71 of the torsion bar 70 provided at the center of the hypotenuse of the support base 3, and the other end is provided at the rear end of the seat 4. Since it is rotatably connected to the rotating shaft 79, this link element 7b usually has the lower backrest frame 50 and the upper backrest frame 55 described above on the rotating shaft. 7 It is one that is fixed integrally with the rotation function of the two rotations stopped, and can rotate together with the link element 7b around the rotation shaft 71 once.
  • the gas spring 31 is provided between the link element 7a and the base 3, and is selectively fixed to the link element 7a. Thus, the entire four-side link mechanism is locked.
  • the upper backrest tilting mechanism R functions by allowing the rotation of the rotation axis 72 of the upper backrest frame 55 twice. It comprises a locking mechanism r, a screw member 73 and a force.
  • the locking mechanism r includes a hole 77 provided above the link element 7b and a bracket provided in the upper frame 55 of the backrest.
  • bracket 7 bl of the same shape so as to be integrated with the link ⁇ b.
  • the brackets 550 and 7b1 are superimposed, and the hole 77 is positioned inside the hole 551, and the pin 76 Is inserted.
  • the pin 76 is pulled out of the hole 551, thereby releasing the above restraint and lifting the backrest upper frame. Only 5 5 can rotate independently with the rotation axis 72 as the center.
  • the pin 76 In a state where the pin 76 is inserted, the pin 76 is pressed against the surface 76a by the pressing member 9, and the pressing member 9 is further pressed. It is connected to the motion conversion mechanism D1 for attaching and detaching the component.
  • the motion conversion mechanism D 1 is rotatably supported by the link frame 101, one end of which is rotatably connected to the pressing member 9, and the seat 4, and the link frame 10. Rotation with the pivot end pivotally connected to the other end of 1 Arm 102
  • the X'-need member 73 is for providing elasticity to the upper frame 55 of the backrest when tilted, so that a concave portion 74 is provided on the lower surface of the upper end of the link element 7b.
  • One end of the spring member 73 is housed and fixed in the recess 74, and the other end is attached to the back frame 55, and the other end is attached to the panel member 73. Therefore, the backrest upper frame 55 is pressed in the upright direction.
  • the lower backrest tilting mechanism S uses the lower backrest frame, the lower backrest tilting mechanism S can press the lower frame forward with the rotation shaft 72 as a fulcrum.
  • a gas spring is provided at the position.
  • the first operating section 43 a and the second operating section 43 as shown in FIG. b and the third operation unit 43c are provided in a group.
  • the first operation part 43 a is for raising and lowering the seat part 6, and the second operation part 43 b is for tilting only the backrest lower frame 50 backward.
  • the third operating section 43c is for locking the seat 6 and the upper frame 55 and the lower frame 50 in conjunction with each other. . Further, when the third operation portion 43c is operated downward during non-locking, only the upper frame 55 can be tilted.
  • the gas spring 31 for tilting the upper and lower parts of the leaning includes a first operation receiving unit which is an operation receiving unit which is a mechanism for directly operating each of the above mechanisms.
  • B 1, second operation reception unit B 2, and third operation reception unit B 3 are provided.
  • the first operation receiving section B 1, the second operation receiving section B 2, and the third operation receiving section B 3 are buttons, respectively, and the gas springs 21, 5 are provided according to the state of the button. 4, 31 are locked or unlocked.
  • the motion conversion mechanism D1 connected to the pin 76 for releasing the constraint between the upper frame 55 and the link element 7b described above serves as a fourth operation receiving unit. It also has functions.
  • FIG. 40 shows a plan view around the connecting portion K between the connecting means LW 1, LW 2, LW 3, LW 4 and the operating portions 43 a to 43 c
  • FIG. 41 shows a perspective view thereof. Shown respectively.
  • connection means LW 1, LW 2, LW 3, and LW 4 are link wires LW 11, LW 21, LW 31, LW 41, and their link wires, respectively.
  • the link wire LW 11 has one end corresponding to the first operation unit 43 a and the other end corresponding to the first operation receiving unit B 1. They are connected.
  • the link wire LW 21 is connected to the second operation section 43 b and the second operation reception section B 2
  • the link wire LW 31 is connected to the third operation section 43 c and the third operation section.
  • the end of the link wire LW 41 is connected to the third operation unit 43 c and the fourth operation reception unit D 1, respectively.
  • Tubes LW12, LW22, LW32 and LW42 have their both ends fixed to seats 4 and the like.
  • the movement of the first operation unit 43 a and the third operation unit 43 (: is converted into the horizontal movement of the first connection unit 1 and the third connection unit LW 3.
  • Conversion members R 1, R 3 are interposed between the first operation section 43 & and the first connection means 1 and between the third operation section 43 c and the third connection means LW 3, respectively. ing.
  • a typical example is a case in which the motion conversion member R 3 is combined with a third operation section 43 c and a third connection means LW 3. This is briefly described below.
  • the operation conversion member R 3 is rotatably supported by a bracket-shaped support portion 47 set on the seat 4 side, and is shifted from its rotation center CT 3.
  • the part CT2 is rotatably and slidably coupled to the part 43c1 deviated from the rotation center CT1 force of the third operation part 43c.
  • a shaft is protruded from the portion CT2 of the motion conversion member R3, and the shaft is fitted into a groove formed in the portion 43c1 of the third operating portion 43c, and this is done.
  • Part CT 2, 4 Between 3c1, the motion conversion member R3 and the third operation portion 43c are rotatably and slidably coupled to each other. The relationship between the groove and the shaft may be reversed.
  • a link forming a third connection means LW3 is provided at the wire connection portion R31 set at a position deviated from the rotation center CT3 and the operation portion connection portion CT2. One end of wire LW31 is connected.
  • the motion conversion member R 3 is rotated by an angle larger than that of the third operation part 43, and the wire connection part R 31 is moved more than the rotation center CT 1 of the operation part.
  • the movement of the operation unit is efficiently converted into the movement of the link wire LW31 in the horizontal direction by moving the operation unit in the horizontal direction.
  • the wire connection portion R 31 is also connected to one end of a link wire LW 41 constituting the fourth connection means LW 4, and the link wire LW The same effect is achieved for the horizontal movement of 41.
  • the first connection means LW 1, the second connection means LW 2, the third connection means LW 3, and the fourth connection means LW 4 are sequentially moved up and down the back seat, tilted only at the lower part of the backrest, and rocked. It corresponds to the swinging motion and the tilting motion of only the upper part of the backrest. '
  • the position of A first operation section 43a to 43c for operating each part of the chair 1 is arranged upward from above, and further, the operation sections 43a to 43c are formed in a flat plate shape.
  • a guide indicating the operation site is displayed on the upper surface.
  • the third operating section 43c for locking the seat 6 and the upper frame 55 of the backrest and the entire lower frame 50 of the backrest should be horizontal.
  • the state can be switched between the down state and the down state, and all of the operation sections 43a and 43b except the third operation section 43c are naturally.
  • a force is applied by a spring or the like so as to be horizontal.
  • the third operation unit 43 When the gas spring 31 is tilted downward, the fixed state of the gas spring 31 provided below the seat 6 is maintained, and the backward tilt angle is maintained in that state.
  • the link frame 101 is moved by the motion conversion mechanism D1 of the first pinion, and the pressing member 9 moves away from the pressing surface 76a of the pin 76 in conjunction with the link frame 101, and the spring S1
  • the pin 76 is removed from the backrest upper frame 55 by the action of the backrest upper frame 55, and the seat 6 and the backrest lower frame 50 are thereby removed. With the backrest fixed, the backrest upper frame 55 should be elastically tilted backward. The state in which this operation is performed is shown by the two-dot chain line in FIG.
  • the gas spring 21 is locked, and the back seat is fixed at a certain elevating position.
  • the link wire LW11 constituting the first connection means LW1 is turned on as shown by the two-dot chain line in FIG.
  • the button is pulled out and interlocked with it, the state of the button, which is the first operation receiving section B1, changes, and the lock of the gas spring 2.1 is released accordingly.
  • the back seat can be moved up and down within a predetermined range with the expansion and contraction of the gas spring 21.
  • the chair 1 adjusts the operation range of the operation reception units B 1 to B 3 and D 1 that operate in response to the operations of the operation units 43 a to 43 c.
  • the connecting parts LW l, LW 2, LW 3, LW 4 are provided with adjusting parts AJ 1, AJ 2 AJ 3, AJ 4, and the adjusting parts AJ 1, AJ 2, AJ 3, AJ 4 are provided. They are collectively arranged in a predetermined area.
  • the first adjustment unit AJ 1 includes nuts LW 1 2 2 and LW 1 2 3 which sandwich a mounting wall 4 61 suspended from the lower portion of the seat 4 from both sides.
  • the tube LW12 is formed at one end of the tube LW12, and serves as a screw portion LW121, which is screwed into the nut.
  • the nuts LW122 and LW123 are screwed back and forth with respect to the thread part LW122, thereby fixing the end fixing position of the tube LW122. I try to change it.
  • the 2nd adjustment unit AJ2, the 3rd adjustment unit AJ3, the 4th adjustment unit AJ 4 has the same configuration as that of the first adjusting unit AJ 1.
  • the mounting walls 46 1, 46 2, 46 3, and 46 4 are provided in a predetermined area in order to collectively arrange all the adjusting units AJ 1, AJ 2, AJ 3, and AJ 4. It is provided in the adjustment area 46.
  • the adjustment area 46 is set at a lower portion of the seat 4 and adjacent to the inside of the operation units 43a to 43c.
  • the mounting walls 46 1, 46 2, 46 3, and 46 4 are orthogonal to the extending directions of the link wires LW 11, LW 21, LW 31, and LW 41, respectively. It is provided with notches 461a, 462a, 463a, and 464a, respectively. Then, on one side of the wall near the notch portions 46 1 a, 46 2 a, 46 3 a, and 46 4 a, a nut as shown in Fig. 41 is provided. LW 1 2 2 LW 2 2 2 LW 3 2 3 LW 4 2 3 is inserted into the counterbore 4 6 1 b, 4 6 2 b, 4 6 3 b, 4 6 4 b Each is provided.
  • the operation accepting sections B 1, B 2, B 3 are operated by the operating sections 43 a, 43 b, 43 c connected through the connecting means LW 1, LW 2, LW 3, LW 4.
  • link wires LW 11, LW 21, LW 31, and LW 41 are too pushed or pulled out when operating D1 and D1
  • the operation reception sections B1, B2, B3, and D1 do not operate. Therefore, in order to operate the operation units 43a, 43b, and 43c so that the operation reception units B1, B2, B3, and D1 operate properly.
  • the specific procedure of the adjustment will be described by taking, as an example, a set of the first operation section 43a, the first connection means LW1, the first adjustment section AJ1, and the mounting wall 461.
  • the link wire LW11 constituting the first connection means LW1 is made to pass through the notch 461a.
  • the two nuts LW122 and LW123 constituting the first adjusting unit AJ1 are advanced and retracted with respect to the thread member LW122 of the tube, and the position is set to the first position. Adjustments are made so that the operation of the first operation receiving section B1 is performed correctly by the operation of the operating section 43a, and these nuts LW122, LW123 are provided. Between the mounting walls 4 6 1.
  • the second operation unit 43 b, the second connection means LW2, the second adjustment unit AJ2, the mounting wall 462, and the third operation unit 43c the third connection means LW3, the fourth The adjustment procedure is the same for the set of the connection means LW4, the third adjustment part AJ3, the fourth adjustment part AJ4, the mounting wall 463, and the mounting wall 646.
  • the cover K can be covered with a cover C on the boundary part K between the controller 46 and the operation parts 43a, 43b, 43c and the connecting means LWl, LW2, LW3, LW4. You can do it.
  • the cover C is provided with an operation part penetrating window C 1 a for penetrating the first operation part 43 a, an operation part penetrating window C 1 b for penetrating the second operation part 43 b, and a third operation part.
  • Each of the operating part penetration windows C 1 c for penetrating 4 3 c is provided, and the seat 4 or the resin seat that covers the lower surface of the seat 4 is provided at a plurality of appropriate places such as the peripheral wall thereof.
  • Claws C 21, C 22, C 23, and C 24 are provided for fixing to the receiving cover CZ.
  • the operation part penetration windows CI a, C lb, and C lc are respectively substantially perpendicular to the extension direction of the operation parts 43 a, 43 b, and 43 c, and have a width that extends through the operation part.
  • the window C 1 a is substantially the same as the first operation unit 43 a
  • the operation unit penetrating window C 1 b is substantially the same as the second operation unit 43 b
  • the operation unit penetrating window C 1 c is substantially the same as the third operation unit 43 c.
  • the height is set so as to substantially correspond to the operation range of the portion corresponding to the window in each operation unit.
  • the claws C21, C22, C23, C24 are engaged with the seat 4 or the seat can CZ.
  • the adjustment units AJ 1 AJ 2, AJ 3, and AJ 4 are all collectively arranged in the adjustment area 46. A. From the 46, take out the adjusting units 81, 82, 8] 3 and 84. In addition, the adjusting sections AJ1, AJ2, AJ3, and AJ4 can be adjusted at a time, and the assembly work can be prevented from becoming complicated.
  • the operation units 43a, 3b, 43c are collectively arranged and located in the vicinity of the adjustment units AJ1, AJ2, AJ3, AJ4, the operation units 43a, 43
  • the correspondence between 3b and 43c and the adjustment units AJ1, AJ2, AJ3, and AJ4 is easy and the operability for the occupant can be improved.
  • a single cover C is provided to cover the boundary between the two and simultaneously, so that these can be prevented from external force and the appearance can be adjusted by only one cover C, and the number of parts can be reduced. In addition, it is possible to reduce the manufacturing cost or to simplify the assembling work.
  • the operation unit and the adjustment unit may be arranged separately, and it is not necessary to arrange the operation units collectively.
  • the force bar can be made to cover only the adjusting part or can be omitted.
  • the position of the adjusting portion may be other than the lower portion of the seat, for example, an upper portion of the armrest.
  • the connection means may be a link other than the link wire and the tube, for example, a rigid link or the like.
  • the two or more operation units are arranged below the side edge of the seat so that their rotation axes extend forward and backward, the seated person can lower his hand while sitting. If extended, these operation parts can be naturally touched, and the operability can be further improved.
  • the two or more operation units are each formed in a plate shape and can maintain a horizontal posture, the usability and operability will be more excellent.
  • the two or more operation units have the same shape or substantially the same shape as each other, a common component is used. And contribute to ease of production and lower prices.
  • the position can be easily identified, and the operability can be improved particularly in a multifunctional chair. You.
  • the two or more operation units are arranged in front and rear and arranged below the side edge of the seat, if the seated person extends his hand downward while sitting, he or she naturally touches these operation units. This makes it possible to achieve superior usability and operability.
  • the two or more operation units are arranged so as to be at the same height, have the same or substantially the same shape, or have a plate-like shape and can maintain a horizontal posture.
  • the base end be rotatably supported on the seat so that the tip can move up and down.
  • the chair having a plurality of operating mechanisms such as an elevating mechanism and a locking mechanism for adjusting the height of the back seat is provided.
  • An operation unit for performing an operation for operating the operation unit ; an operation reception unit that is a mechanism for directly operating each of the mechanisms; and a connection unit that connects the operation unit and the operation reception unit.
  • the configuration in which the adjusting sections are arranged collectively in a predetermined area allows the adjusting sections to be adjusted at one time, and also complicates the assembly operation. Can be prevented. As a result, it can benefit users and producers.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chairs Characterized By Structure (AREA)

Abstract

L"invention concerne une chaise polyvalente à fonctionnement amélioré. Pour éviter la complexité des opérations d"assemblage/de désassemblage et de construction lorsque les parties de réglage sont dispersées, au moment du réglage, on adapte plusieurs parties opérationnelles(deux ou plus de deux, appartenant à l"ensemble des parties opérationnelles) pour le réglage de la hauteur du siège, de l"inclinaison, etc., de manière à permettre une rotation des parties en question autour d"axes de rotation respectifs préétablis, ces axes étant disposés selon une ligne, les parties considérées étant également disposées selon une ligne. La chaise comprend en outre une partie qui est un mécanisme d"activation directe des fonctions, et un système de liaison entre les parties opérationnelles et le mécanisme. Une zone préétablie regroupe un certain nombre ou l"ensemble des parties de réglage installées dans le système de liaison pour le réglage de la gamme opérationnelle du mécanisme actionné par le biais des parties opérationnelles.
PCT/JP2001/008866 2000-10-16 2001-10-09 Chaise WO2002032269A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE10194641T DE10194641T5 (de) 2000-10-16 2001-10-09 Stuhl

Applications Claiming Priority (6)

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JP2000-315942 2000-10-16
JP2000315942A JP5137277B2 (ja) 2000-10-16 2000-10-16 椅子
JP2000315773A JP2002119355A (ja) 2000-10-16 2000-10-16 椅 子
JP2000-315773 2000-10-16
JP2001-195603 2001-06-27
JP2001195603A JP5067989B2 (ja) 2001-06-27 2001-06-27 椅子

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US9004597B2 (en) 2012-09-20 2015-04-14 Steelcase Inc. Chair back mechanism and control assembly
CN106880466A (zh) * 2015-10-06 2017-06-23 松下知识产权经营株式会社 起立动作辅助器具
US11304528B2 (en) 2012-09-20 2022-04-19 Steelcase Inc. Chair assembly with upholstery covering

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JP4719905B2 (ja) * 2005-10-27 2011-07-06 コクヨ株式会社 椅子
JP5002835B2 (ja) * 2005-10-27 2012-08-15 コクヨ株式会社 部材の接続構造
JP4747311B2 (ja) * 2005-11-11 2011-08-17 コクヨ株式会社 椅子
JP4945781B2 (ja) * 2005-11-11 2012-06-06 コクヨ株式会社 椅子
DE102011001811A1 (de) * 2011-04-05 2012-10-11 Wilkhahn Wilkening + Hahne Gmbh + Co. Kg Stuhl
WO2014036633A1 (fr) * 2012-09-05 2014-03-13 Jamshed Unwalla Chaise à dossier réglable et siège réglable
US9706845B2 (en) 2012-09-20 2017-07-18 Steelcase Inc. Chair assembly
DE102014220695A1 (de) * 2014-10-13 2016-04-28 Haworth Gmbh Stuhl, insbesondere Bürostuhl
EP3741258A1 (fr) * 2019-05-20 2020-11-25 BOCK 1 GmbH & Co. KG Chaise pourvue de mécanisme d'inclinaison de l'assise

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US9451826B2 (en) 2012-09-20 2016-09-27 Steelcase Inc. Chair assembly
US9918552B2 (en) 2012-09-20 2018-03-20 Steelcase Inc. Control assembly for chair
US9022476B2 (en) 2012-09-20 2015-05-05 Steelcase Inc. Control assembly for chair
US9027997B2 (en) 2012-09-20 2015-05-12 Steelcasel Inc. Chair assembly
US9027998B2 (en) 2012-09-20 2015-05-12 Steelcase Inc. Chair assembly
US9027999B2 (en) 2012-09-20 2015-05-12 Steelcase Inc. Control assembly for chair
US9049935B2 (en) 2012-09-20 2015-06-09 Steelcase Inc. Control assembly for chair
US9004597B2 (en) 2012-09-20 2015-04-14 Steelcase Inc. Chair back mechanism and control assembly
US11304528B2 (en) 2012-09-20 2022-04-19 Steelcase Inc. Chair assembly with upholstery covering
US9010859B2 (en) 2012-09-20 2015-04-21 Steelcase Inc. Chair assembly
USD742676S1 (en) 2012-09-20 2015-11-10 Steelcase Inc. Chair
US9462888B2 (en) 2012-09-20 2016-10-11 Steelcase Inc. Control assembly for chair
US9492013B2 (en) 2012-09-20 2016-11-15 Steelcase Inc. Chair back mechanism and control assembly
US9526339B2 (en) 2012-09-20 2016-12-27 Steelcase Inc. Control assembly for chair
USD742677S1 (en) 2012-09-20 2015-11-10 Steelcase Inc. Chair
US9844267B2 (en) 2012-09-20 2017-12-19 Steelcase Inc. Chair back mechanism and control assembly
US9861201B2 (en) 2012-09-20 2018-01-09 Steelcase, Inc. Chair assembly
US9345328B2 (en) 2012-09-20 2016-05-24 Steelcase Inc. Chair assembly with upholstery covering
US10206507B2 (en) 2012-09-20 2019-02-19 Steelcase Inc. Control assembly for chair
CN106880466A (zh) * 2015-10-06 2017-06-23 松下知识产权经营株式会社 起立动作辅助器具

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US20020180252A1 (en) 2002-12-05

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