CN105263367A - Chair - Google Patents

Chair Download PDF

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Publication number
CN105263367A
CN105263367A CN201480032425.9A CN201480032425A CN105263367A CN 105263367 A CN105263367 A CN 105263367A CN 201480032425 A CN201480032425 A CN 201480032425A CN 105263367 A CN105263367 A CN 105263367A
Authority
CN
China
Prior art keywords
backrest
bracing
strutting arrangement
stay
support
Prior art date
Application number
CN201480032425.9A
Other languages
Chinese (zh)
Inventor
埃里克·灿
河本诚太郎
Original Assignee
株式会社伊藤喜
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
Family has litigation
Priority to US201361831763P priority Critical
Priority to US61/831,763 priority
Application filed by 株式会社伊藤喜 filed Critical 株式会社伊藤喜
Priority to PCT/JP2014/065094 priority patent/WO2014196630A1/en
Publication of CN105263367A publication Critical patent/CN105263367A/en
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=52008259&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CN105263367(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/36Support for the head or the back
    • A47C7/40Support for the head or the back for the back
    • A47C7/44Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/36Support for the head or the back
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/36Support for the head or the back
    • A47C7/40Support for the head or the back for the back
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/36Support for the head or the back
    • A47C7/40Support for the head or the back for the back
    • A47C7/46Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/36Support for the head or the back
    • A47C7/40Support for the head or the back for the back
    • A47C7/46Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
    • A47C7/462Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs adjustable by mechanical means

Abstract

A chair having a backrest (3) and a backframe (4) disposed behind the backrest (3). The backrest (3) is capable of being deformed in a bent manner by the body pressure from a seat occupant. The upper end part of the backrest (3) is attached to the back frame (4) by a first support device (12). Left and right end parts of the section of the backrest (3) at or slightly above the height of the waist of the user are attached to the back frame (4) by a second support device (13). The first support device (12) has a rigidity such that deformation in a bending manner occurs due to body pressure. The rigidity of the second support device (13) is higher than that of the first support device (12). The waist of the user is supported in a stable manner, and when rocking occurs, the upper end part of the backrest (3) is able to deform so as to follow the movement of the body. The backrest comprises a frame body (9) constituting the outer periphery of the backrest and a body support section (10) for receiving the body pressure of the seat occupant. The body support section (10) is divided into a center area comprising a group of laterally long center stays (41), and side areas comprising a group of similarly laterally long side stays (40). The center stays (41) and the side stays (40) are disposed so as to be vertically staggered. Stays (40, 41) that are laterally adjacent to each other are integrally linked by a linking piece (42) oriented at an incline.

Description

Chair

Technical field

The present invention relates to a kind of chair, and particularly, office chair is used as preferred object.

Background technology

For user, the first factor that chair has is comfortableness.Particularly, in the chair of office, people sits down last very long, and therefore comfortableness is key factor.There is the factor of some infringement comfortablenesses.Usually, such factor comprises the constriction caused because of the very hard situation of the part of collision health and the tension that cannot easily move.Therefore, counter measure is adopted to come analgesia sense and tension.

The problem of process constriction, makes to be arranged in by mat in seat or backrest, and seat or backrest are formed by net etc.In seat plate or backboard, adopt deformable structure to be also effective in raising pliability.

On the other hand, in order to can prevent or alleviate tension, under the state of sitting down, health is allowed to move just enough.For chair provides swing function to be the effective means of keeping tensions down sense.But, independent simple swing function only has limited effect in raising comfortableness.This is because people take various posture under the state of sitting down, and therefore simple swing function cannot follow the change of the posture of people.

Such as, usual seated person turns due is so that turn away.But, when backrest has rigid structure, when people's turns due, reduce with the contact area of backrest, make user bear constriction, and therefore, comfortableness declines.

Therefore, for the movement of health carry out designing improve backrest follow character.As the example of these designs, as the structure that backrest can be out of shape by the body pressure of seated person, document 1 to 4 describes backrest and is subject to three positions carrying on the back the structure of frame supported, and these three positions are made up of the position in the middle part of the left and right of position, two, the left and right in upper end and bottom.

When backrest presses Free Transform by the body of seated person, the stability of health declines, and therefore comfortableness declines on the contrary.That is, backrest must have the function of body support securely.Particularly, when people to be sitting on chair and to carry out various bending over one's desk working, when people is dowdily seated, internal is squeezed, and therefore strong effect of stress is on health.Therefore, even if conclusion is under non-rocking state, the health (especially, lumbar vertebrae) of people is also supported and high necessity under being maintained at the straight and upright state in back.

When observing the known document of the independent public from the angle of stably such function of body support, the backrest of the document that the independent public is known is supported three positions, and these three positions are made up of the position in the middle part of the left and right of position, two, the left and right of upper end and bottom.Therefore, conclusion is that of avoiding too much distortion.But, because the bottom of backrest is easily out of shape, health is supported on securely under non-rocking state and the high function of the state keeping back straight and upright so estimate not possess.That is, in the document that the independent public is known, existence stably support is in the possibility of insufficient function of the health under non-rocking state.

In addition, as the using forestland of chair, usually under swinging condition, body bilateral twists, or alternatively, shoulder left and right deviation.In this case, on the left side on the top of the backrest of load centralization or right side.But, in the document that the independent public is known, the top of backrest cannot easily be out of shape.Therefore, the height that the posture estimating not possess health changes follows character, and therefore, from this angle, also there is the space of improving comfortableness.

In addition, in many cases, the backrest of chair is provided with by the backboard of resin manufacture.In addition, as alleviating constriction and improving the means of buffering property and fitting character, backboard is adopted to have the structure of flexible structure.Such as, in document 5, the applicant of the application is open, arranges a large amount of elongate groove of horizontal extension in the lateral direction, body-support portion is made up of multistage band plate group in backboard.In the document 5, in each band plate, in order to can easily deform, be provided with in left and right end portions and carefully repair groove.

On the other hand, document 6 discloses the backboard with the structure being similar to honeycomb.In addition, document 7 discloses following backrest, and in this backrest, cruciform vent and straight line shaped hole are arranged regularly, make to be formed the structure being similar to net.

In document 6 and 7, the body-support portion of backrest is formed with web frame.In addition, the one group of fine rule forming body-support portion bends individually, and therefore, allows fine rule to perform extensional deformation according to body pressure.Therefore, whole body-support portion can so be deformed into recurve.

Herein, the function of the body support realized by backrest is considered below.Independent high degree of flexibility is inadequate, and stably the function of body support is also important.Such as, when there is the trend that health is shaken under swinging condition, in some cases, comfortableness declines on the contrary.

In addition, when seated person performs as the bending over one's desk working of PC operation under non-rocking state, when lumbar vertebrae is supported firmly, the straight and upright suitable posture in back is maintained, and therefore, this situation is preferred.On the contrary, when the flexibility of backrest is too high, health can not stably be supported.

In addition, in document 6 and 7, adopt a kind of web frame, and therefore, this structure is easily out of shape on the whole.Therefore, although obtain high buffering property, conclusion there is room for improvement in stably body support.On the other hand, the band plate of document 5 performs extensional deformation not too much, and therefore, has superiority in the stability of body support.But, because there is restriction in the elongation of each band plate, so conclusion there is room for improvement from flexibility angle.

Reference listing

Patent document

Patent document 1:JP-A-2002-119366

Patent document 2:JP-A-2004-129966

Patent document 3:JP-A-2010-063831

Patent document 4: United States Patent (USP) 7249802

Patent document 5:JP-A-2011-041615

Patent document 6: Japan Patent 4015673

Patent document 7: United States Patent (USP) 5934758

Summary of the invention

Technical problem

In view of such present circumstances devises the invention of the application, and the invention of the application aims to provide the known enhancing of use value and has realized the chair of improvement.In addition, the application comprises the structure of a large amount of improvement and therefore provides these structures improved may be an object.

In addition, in view of such present circumstances devises the invention of the application.The object of the invention of the application is to provide the backrest more improved.

Technical scheme

The application is by having level and one group of invention that scope is widened is formed.In addition, the typical module of the application is identified as the first to the 15 invention.

[the first invention]

Wherein the first invention forms upperseat concept.The essential structure of the first invention comprises: seat; Backrest; With back of the body framework, described back of the body framework has rigid structure and is disposed in the rear of described backrest, and has interval between described back of the body framework and described backrest.In addition, described backrest is by the first bracing or strutting arrangement and be attached to described back of the body framework by the second bracing or strutting arrangement, described first bracing or strutting arrangement is disposed in the height and position place of the upper end near described backrest, and described second bracing or strutting arrangement is disposed in lower than described first bracing or strutting arrangement and higher than seat surface position.In addition, described first bracing or strutting arrangement is attached to the part in the middle part of the left and right of the upper end in described backrest.

Herein, the first bracing or strutting arrangement be attached to the upper end of backrest or its near just enough.Therefore, backrest can be run out of on the first bracing or strutting arrangement.That is, the attachment location of the first bracing or strutting arrangement has vertical width.Second bracing or strutting arrangement is similar.

In the present invention, can say, backrest is supported three positions, and described three positions are made up of the position, two, left and right below in the middle part of the left and right of upper end and upper end.In addition, when user sits down with the state do not leaned against on backrest as bending over one's desk working of PC operation to perform, lumbar vertebrae etc. can support by two positions in left and right in backrest are partially stabilized by what support.Therefore, the state that can suitably keep back straight and upright, and therefore, allow user to take suitable work posture.

On the other hand, the first bracing or strutting arrangement is in the middle part of the left and right of backrest, and therefore, the outside in the lateral direction of the first bracing or strutting arrangement is run out of to form free end in the upper end (or top) of backrest.That is, the left and right end of the upper end (top) of backrest is both used as not by the free end from posterior support.Therefore, during the structure be out of shape when adopting the top of backrest can be pressed by body, backrest can be out of shape to follow the torsion of health be in the state leaned against on backrest at health under.This contributes to the comfortableness under raising dependence state.

[the second invention]

Second invention is the example of the expansion of the first invention.In the invention, described first bracing or strutting arrangement has following elastic strength, when the body pressure of seated person acts on described backrest, described elastic strength allows buckling deformation and allows the top of described backrest move backward and depart from thus, and the rigidity that described second bracing or strutting arrangement has makes, even if when the body pressure effect of seated person, flexural deformation does not also occur substantially, or alternatively, although the body pressure of described seated person causes elastic deformation, but the elastic strength that described second bracing or strutting arrangement has makes to utilize described elastic strength, the size of the elastic deformation of described second bracing or strutting arrangement is lower than the size of the elastic deformation of described first bracing or strutting arrangement.

In this second invention, the first bracing or strutting arrangement has spring property.Therefore, lean against the state on backrest people under, allow the top of backrest to move so that near back of the body framework.That is, the counter-force of the first bracing or strutting arrangement acts on the top of backrest from rear, and therefore, this counter-force provides cushioning effect to user and therefore provides comfort level.In addition, the distortion in the first bracing or strutting arrangement allows the torsional deformation in backrest, and therefore lean against the state on backrest people under, when health is along the right side or left direction twisting, also improves and follow deformability.

In addition, the second bracing or strutting arrangement is out of shape because of the body pressure of seated person hardly, or alternatively, even when being out of shape generation, the size of distortion is also less than the size of the distortion in the first bracing or strutting arrangement.Therefore, the function supporting the health be under dependence state is suitably achieved.In addition, when the bottom of backrest is under the state (such as swinging condition) leaned on during excessive deformation, the stability of health declines, and make in some cases, comfortableness declines on the contrary.But, in the second invention, even under the state leaned on, health also by backrest lower stabilizer support, and therefore, the excessive movement of health is prevented from, and makes it possible to improve comfortableness.

[the 3rd invention]

3rd invention is the example of the expansion of the first invention or the second invention.In the invention, described first bracing or strutting arrangement is in the posture of extending in the vertical direction in side view, and described second bracing or strutting arrangement is divided into two parts in left and right, and left and right second bracing or strutting arrangement is in inclination attitude in plan view, make the interval of described left and right second bracing or strutting arrangement along with moving towards comparatively nearside and broadening.

In the present invention, the first bracing or strutting arrangement and the second bracing or strutting arrangement can utilize various pattern.But when employing the 3rd invention, in the first bracing or strutting arrangement and the second bracing or strutting arrangement, the part extended between back of the body framework and backrest can have simple plate shape structure.This provides the advantage of brief configuration.In addition, the first bracing or strutting arrangement 12 extends in the vertical direction, and therefore can by the body pressure-volume of seated person change places distortion and bend backward.Therefore, that can improve the change of opposing health follows that character is gentle rushes character.

[the 4th invention]

4th invention is the example of the expansion of the first invention or the second invention.In the invention, described back of the body framework comprises a pair left vertically elongate member and the vertical elongate member in the right side, these left vertically elongate member and the vertical elongate member in the right side tilt to make along with upwards narrower intervals, and upper end is connected integratedly by coupling part, and described first bracing or strutting arrangement is attached to the described coupling part of described back of the body framework, and described second bracing or strutting arrangement is attached to the vertical elongate member of the vertical elongate member in a described left side and the described right side.Herein, the item for the 4th invention also goes for the 3rd invention.

Such as, back of the body framework can be constructed by a component in the middle part of the left and right being arranged in backrest, or alternatively, can utilize the inverted U-shaped structure with left and right vertical portion.But when employing the 4th invention structure (inverted V-shaped structure), obtaining can by the advantage adopting simple structure to guarantee high strength.

[the 5th invention]

5th invention is the example of the expansion of the first invention or the second invention.In the invention, described backrest comprises main member, described main member is by resin manufacture and be attached to described back of the body framework, described main member comprises skeleton and body-support portion, described skeleton has ring-shaped and forms periphery, described body-support portion is positioned at the inner side of described skeleton, and described body-support portion is provided with a large amount of slit or hole to have the intensity making the body pressure-volume of seated person easily cause distortion.Herein, the item for the 5th invention also goes for the 3rd invention or the 4th invention.Backrest can utilize various structure.But in the 5th invention, main member is made up of integrally moulded goods.Therefore, the structure being constructed to separating member with skeleton and body-support portion is compared, and can save time and energy at manufacture view, and can prevent mass change.

Herein, in the 5th invention, body-support portion is configured to constant relative to skeleton.But, as mentioned above, also can adopt following structure: construct body-support portion with flexible raw material (such as net materials), then, flexible raw material are attached to skeleton.In either case, preferably: skeleton performs buckling deformation according to the body pressure of seated person.

[the 6th invention]

In the 5th invention, backrest can be constructed individually by main member, and the body pressure of seated person directly can be accepted by main member.By contrast, serve as the 5th invention expansion example the 6th invention in, arrange mat in before described main member, and at least described mat is covered by skin material.In this structure of the 5th invention, the pliability can guaranteeing for health by mat.

[the 7th invention]

7th invention is also the example of the expansion of the 5th invention.In the invention, the lower end of described main member is oriented near described seat surface, lumbar supports component for supporting the lumbar portion of seated person to be disposed in before described main member or below, and in addition, described main member is attached to described second bracing or strutting arrangement in the position a little more than described lumbar supports component.Herein, the item for the 7th invention also goes for the first invention to the 4th invention or the 6th invention.

When providing the lumbar supports component as in the 7th invention, the lumbar vertebrae of seated person can be properly supported.Therefore, this can contribute to the suitable posture maintaining seated person.In addition, because the first bracing or strutting arrangement is attached to main member on lumbar supports component, so this situation that the width on the left and right directions of main member can be avoided to become excessive.In addition, due to the attachment part of the second bracing or strutting arrangement and the attachment part of lumbar supports component close to each other, so the rigidity of the part of the attachment part of lumbar supports component in main member also can be enhanced, and therefore, this can contribute to the further stability of the health of user.

[the 8th invention]

8th invention is the example of the expansion of the first invention or the second invention.In the invention, when the body pressure effect of seated person, described backrest tilts backwards.8th invention is applicable to rocking chair.But obviously, the 8th invention also goes for the 3rd to the 7th invention.In rocking chair, adopt structure seat being connected to backrest widely.Obviously, the present invention also goes for such chair of synchronized model.

Buckling deformation in backrest occurs significantly under swinging condition.Therefore, especially under the 8th invention, effect of the present invention is utilized.

[the 9th invention]

Wherein, in the backrest of the 9th invention: body-support portion is made up of multiple region, the body pressure of seated person acts in described body-support portion, and described multiple region is divided into region, left and right, and has a certain amount of interval between region, described left and right; Each region is made up of a large amount of stays of horizontal extension in the lateral direction; Described stay in adjacent area is arranged in the mode departed from the vertical direction; Adjacent stay in adjacent area is linked together by the connector in inclination attitude in front view; And the inclination attitude of connector adjacent on described above-below direction is thus opposite each other.

In the 9th invention, each stay is in the posture of horizontal extension in the lateral direction.Therefore, substantially, body-support portion distortion is to extend individually in the lateral direction.Therefore, this stability aspect being configured in body support has superiority.That is, the distortion in body-support portion has directionality, and therefore, avoids following situation: body-support portion is followed the movement of health excessively thus is out of shape.Therefore, this stability aspect being configured in body support has superiority.

In addition, connector is in inclination attitude.Therefore, when the postural change of connector, when making to be diminished by the angle formed by adjacent connector in the vertical direction, the interval of stay adjacent in the lateral direction broadens.The state that this realization has roughly performed extensional in the lateral direction situation with body-support portion is roughly the same.By means of this point, high buffering property can be guaranteed.In addition, each stay is out of shape, so that bending, distortion etc.Therefore, this is configured in and also has superiority with the fitting character aspect of health.

[the tenth invention]

In the backrest of the tenth invention, stay group is on machine-direction oriented.That is, in the tenth invention: body-support portion is made up of multiple region, the body pressure of seated person acts in described body-support portion, and described multiple region is divided into lower regions, and has a certain amount of interval between described lower regions; Each region is made up of a large amount of stay vertically extended; Described stay in adjacent area is arranged in the mode departed from the lateral direction; Adjacent stay in adjacent area is linked together by the connector in inclination attitude in front view; And the inclination attitude of described connector adjacent on described left and right directions is thus opposite each other.

In the 11 invention, body-support portion easily performs extensional in the lateral direction.But, basically, obtain the effect identical with the effect of the 9th invention.

[the 11 invention]

11 invention is the preferred exemplary of the expansion of the first invention or the second invention.In the invention, in front view, the width of described connector is less than the width of described stay.According to this structure, under the Area of bearing of health expands the state making the stability of body support be enhanced, the distortion in connector easily realizes, and mat can be modified.

[the 12 invention]

12 invention is the detailed example of the 9th invention.In the invention, the base portion of connector adjacent on described above-below direction or described left and right directions is close to each other, and described connector adjacent on described above-below direction or described left and right directions is formed with V-shaped configuration.

The base portion of connector adjacent on above-below direction or left and right directions can be separated from each other.But, in this case, the number of connector reduces, and makes the possibility occurring that intensity declines.On the contrary, in the structure of the 4th invention, connector is mutually continuous, and very close to each other between connector.Therefore, it is possible to increase the number of connector, and therefore, also can guarantee the intensity of body-support portion.

[the 13 invention]

13 invention be the 9th invention in detail and preferred embodiment.In the invention, structure comprises: middle section, and described middle section is positioned at the central authorities on described left and right directions; With the left and right sides region be arranged on the left and right sides of described middle section, described middle section is made up of central stay group, and described side region is made up of side stay bar, wherein for connector group that central stay group and side stay bar group are linked together with zigzag formation of structure.

The number forming the region of body-support portion can at random be proposed.But, when adopting the region of big figure, the number of connector also increased, and therefore, caused the worry to crossing high flexibility, unless taked any means.On the contrary, as in the 13 invention, in the structure be made up of a middle section and two side region, the stability of body support and buffering property can be coordinated with each other in a satisfactory manner, and therefore, this structure is preferred.

[the 14 invention]

14 invention be the 9th invention in detail and preferred embodiment.In the invention, in the position to the lumbar supports part supported near the lumbar portion of seated person, the density of described stay is high.In the invention, the lumbar vertebrae of seated person is properly supported, and therefore, this is configured in the stability aspect improving user's body is useful.Herein, also in the tenth invention, preferably adopt the means of the rigidity at the position for improving lumbar supports part.In the first invention and the second invention, as the means of the rigidity for improving lumbar supports part, can adopt the means different from the 14 invention, the plate thickness as stay increases.

[the 15 invention]

15 invention be also the 9th invention in detail and preferred embodiment.In the invention, each stay has plate shape structure, and in described plate shape structure, plate thickness is in the longitudinal direction less than vertical width, and the rib extended on described left and right directions be formed on each stay below in, and described rib is also integrally connected to described connector.

In the 15 invention, under the state that each stay is made thin as far as possible, necessary bending strength can be guaranteed.Therefore, this structure is preferred for saving material (resin).In addition, because rib and connector are connected to each other, so smooth distortion can be realized, and the bending situation concentrated on the end of stay is avoided.Also obtain another advantage, that is, prevent stress from concentrating, and therefore improve durability.Herein, the rib structure be arranged in after stay also goes for the tenth invention.

Invention effect

By means of the present invention, improve the comfortableness under the state leaned against on chair.In addition, the intensity of chair can be guaranteed, manufacturing time and energy can be saved, and can mass change be prevented.

Accompanying drawing explanation

Fig. 1 (A) and 1 (B) is the diagram of the overall appearance of the chair illustrated according to embodiment.Fig. 1 (A) is the perspective view from seeing above, and Fig. 1 (B) is the perspective view seen from behind.

Fig. 2 (A) and Fig. 2 (B) is the diagram of the total structure that chair is shown.Fig. 2 (A) is partial, exploded perspective view, and Fig. 2 (B) is side view.

Fig. 3 (A) and Fig. 3 (B) is the decomposition view of major part.Fig. 3 (A) is the diagram under the state be shifted with general posture at backrest.Fig. 3 (B) horizontally rotates and diagram under the state of decomposing at backrest.

Fig. 4 (A) to Fig. 4 (C) is the diagram of the relation illustrated between bracing or strutting arrangement and back of the body framework.Fig. 4 (A) is the decomposition diagram of the first bracing or strutting arrangement and back of the body framework, Fig. 4 (B) is the decomposition diagram of the first bracing or strutting arrangement, the second bracing or strutting arrangement and backrest, and Fig. 4 (C) is the decomposition diagram of the second bracing or strutting arrangement and backrest.

Fig. 5 (A) and Fig. 5 (B) is the decomposition view of the relation illustrated between the first bracing or strutting arrangement and backrest.

Fig. 6 (A) and Fig. 6 (B) is the decomposition view of the relation illustrated between the second bracing or strutting arrangement and backrest.

Fig. 7 (A) to Fig. 7 (C) is the explanation diagram of lumbar supports component.Fig. 7 (A) and Fig. 7 (B) is decomposition diagram, and Fig. 7 (C) is the plane of backrest.

Fig. 8 is the front view of backrest.

Fig. 9 is the perspective view from the backrest observed above.

Figure 10 is the perspective view of the backrest observed from behind.

Figure 11 is the decomposition view for representation function.

Detailed description of the invention

Then, below with reference to the accompanying drawings embodiments of the invention are described.The present embodiment is applicable to widely used swivel chair in office etc.Herein, in the embodiment provided below and claim, term " forward and backward " and " left and right " are for identifying direction.Then, with reference to the people be normally sitting on chair to define these directions.

(1) profile of chair

As shown in Fig. 1 (A) to 2 (B), chair comprises as the leg device 1 of major component, seat 2 and backrest 3.Backrest 3 is attached to the back of the body framework 4 at the rear being disposed in this backrest 3.Leg device 1 comprises: the leg pillar 5 being in vertical posture; With central tube 6, this central tube 6 is for supporting leg pillar 5.Five branch arm extend in radial directions from central tube 6.Then, castor is attached to the end of each branch arm.

Leg pillar 5 is made up of the cylinder of the extensible type being provided with inner core and urceolus.As shown in Fig. 2 (B), base portion 7 is attached to the upper end of leg pillar 5, then, back of the body framework 4 is connected to base portion 7 by joint member 8 to allow sweptback mode.Herein, back of the body framework 4 and joint member 8 can one.The inner core forming leg pillar 5 can rotate freely relatively with urceolus.Therefore, base portion 7 (and seat 2 and backrest 3) can freely horizontally rotate.

Although the diagram of eliminating, be built in base portion 7 for the sweptback shake spring flexibly supporting back of the body framework 4.In seat 2, the intermediate member (not shown) be arranged in base portion 7 is attached with the mode of movement backward to allow to tilt backwards around the front portion at the center of being used as.Intermediate member and joint member 8 are linked together by the axle of horizontal extension in the lateral direction to allow the mode of relative movement.By means of this point, with backrest 3 tilt backwards interlock, seat 2 performs and moves backward and tilt backwards.

Backrest 3 comprises main member, and this main member is manufactured by injection moulding by resin such as polyacrylic raw material.When backrest 3 comprises mat and skin material, need backrest 3 and main member is distinguishable from one another comes.But in the present embodiment, whole backrest 3 is made up of main member, and therefore the difference of backrest 3 and main member does not provide substantial advantage.Therefore, easy in order to describe, do not use term " main member ", and use term " backrest 3 ".

Backrest 3 is made up of with the body-support portion 10 being positioned at inside the skeleton 9 forming periphery.As shown in Figure 8, skeleton 9 is formed with the shape of approximately quadrangle: a side members 9a is formed the left and right sides; Upper member 9b horizontal extension and form upper end in the lateral direction; And lower member 9c horizontal extension and form lower end in the lateral direction.

The lower end of backrest 3 is oriented near seat surface.In backrest 3, in before the lumbar supports component 11 for supporting the lumbar vertebrae of seated person is disposed in, and be disposed in the height and position place corresponding with the lumbar vertebrae of seated person.Health height and preference depend on each seated person.Therefore, lumbar supports component 11 is in Height Adjustable mode.

The backrest 3 of the present embodiment has such collapsed shape, that is, the attachment part of lumbar supports component 11 is the narrowest.But available structure need not be limited to this.That is, as the structure of backrest 3, the arbitrary shape of the following structure of picture can be adopted: the structure that width in the lateral direction is roughly fixed; Wide and the shape of the upside-down trapezoid that lower end is narrow in upper end; And the shape of upside-down trapezoid that lower end wide narrow with upper end.

Such as, as shown in Fig. 3 (A) and 3 (B), back of the body framework 4 comprises left vertically elongate member and the vertical elongate member 4a in the right side, and the vertical elongate member in a described left side and the vertical elongate member 4a in the right side tilt to make the gap upwards compact between them.In the vertical elongate member in a left side and the vertical elongate member 4a in the right side, upper end is connected integratedly by coupling part 4b.

Therefore, left vertically elongate member and the vertical elongate member 4a in the right side form the structure being inverted V-arrangement.Left vertically elongate member is connected by lower stay part 4c integratedly with the lower end of the vertical elongate member 4a in the right side.In addition, forward arm part 4d is arranged on the lower end of left vertically elongate member and the vertical elongate member 4a in the right side integratedly.Forward arm part 4d and lower stay part 4c is connected to the joint member 8 shown in Fig. 2 (A) and Fig. 2 (B).Such as, as clearly seen from Fig. 4 (B), the vertical elongate member 4a of back of the body framework 4 is formed as having rear board and side panel with the cross section of L shape.Therefore, light structures firm and anti-twist on fore-and-aft direction and left and right directions is obtained.

In back of the body framework 4 of the present invention, adopt resin molded goods or aluminum die cast product.Alternatively, manufacture can be performed by adopting metallic plate or metal tube as material.Can adopt by the synthetic products of different types of material structure.In addition, Construction integration is not inevitable.That is, such as, left vertically elongate member and the vertical elongate member 4a in the right side can be manufactured independently, then, together with in upper end vertical to vertical for left side elongate member and right side elongate member 4a being connected, that is, left vertically elongate member and the vertical elongate member 4a in the right side can be made up of multiple part.Also the goods of shell structure can be adopted as back of the body framework 4.

In addition, such as, as shown in Fig. 3 (A) and Fig. 3 (B), in backrest 3, the coupling part 4b of the upper end of back of the body framework 4 in the middle part of the left and right of upper member 9b, is attached to by the first bracing or strutting arrangement 12.In addition, in the part above the attachment part of lumbar supports component 11, left and right sides component 9a is attached to the component 4a of the vertical elongation of back of the body framework 4 by the second bracing or strutting arrangement 13.This point of detailed hereafter.

(2) attachment structure of backrest

As shown in Fig. 4 (A) and Fig. 4 (B), the first bracing or strutting arrangement 12 is included in front view with two spring section 12a that V-arrangement is arranged.The upper attachment part 12b of horizontal extension is integrally connected to the upper end of spring section 12a in the lateral direction.In addition, rearwardly projecting lower attachment part 12c is integrally connected to the lower end of left and right anchor portion 12a.First bracing or strutting arrangement 12 is manufactured by injection moulding by resin such as polyacrylic raw material.Anchor portion 12a is in the posture of extending in the vertical direction, but anchor portion 12a has plate shape wide and narrow in side view in front view.Therefore, the power from front easily can cause flexural deformation.

Lower attachment part 12c is the form with the block (shape of boss) of horizontal extension in the lateral direction.Rear side first recess 15 of the hole be forward assembled to as lower attachment part 12c is formed in the coupling part 4b of back of the body framework 4.Lower attachment part 12c the first bolt 16 be inserted into from below in rear side the first recess 15 is fixed.As shown in Fig. 4 (A), in the attachment part 12c of the first bracing or strutting arrangement 12, nut insertion hole 17 is to after-opening, and the nut of the first bolt 16 is set in nut insertion hole 17.

As shown in Fig. 5 (A) and Fig. 5 (B), inside and outside the upper member 9b of backrest 3, there is triplen, that is, there is outer wall, inwall 18 and midfeather 19.Therefore, aft-opening two grooves 20 extended are defined.In addition, be such as cut off in the middle part of the left and right of inwall 19, the upper attachment part 12b forming front side the first recess 21, first bracing or strutting arrangement 12 is assembled in the first recess 21 of front side.The upper attachment part 12b of the first bracing or strutting arrangement 12 is fixed to upper member 9b by the second bolt 22 inserted from below.

Aft-opening nut retaining part 23 is formed in the upper member 9b of backrest 3.On the other hand, in the upper attachment part 12b of the first bracing or strutting arrangement 12, the retainer 24 for the nut retaining part 23 from rear against upper member 9b is configured to project upwards.

Second bracing or strutting arrangement 13 is by the raw material manufacture of resin (such as nylon resin) with high rigidity.In addition, as shown in Fig. 5 (B) and Fig. 5 (C), the second bracing or strutting arrangement 13 comprises arm section 13a, and arm section 13a has the band plate shape bending to waveform in plan view gradually.In the rear end of arm section 13a, rear boss part 13b is set integratedly.In addition, at the front end place of arm section 13a, front boss part 13c is set integratedly.The rigidity that arm section 13a has makes the body pressure of the people be seated be not easy to cause distortion (but micro-strain may produce).

Rear boss part 13b is mounted in rear side the second recess 25, and rear side second recess 25 is arranged in the vertical elongate member 4a of back of the body framework 4.3rd bolt 26 is inserted in rear side the second recess 25 from below.The nut (not shown) that 3rd bolt 26 is inserted into wherein is incorporated in the rear boss part 13b of the second bracing or strutting arrangement.The flange 13d overlapping with the edge of opening of rear side second recess 25 is arranged in rear boss part 13b.

As Fig. 6 (A) and Fig. 6 (B) clearly shown in, front side second recess 27 is formed in the side member 9a of backrest 3, and the front boss 13c of the second bracing or strutting arrangement 13 is mounted in the second recess 27 of front side.Front side the second recess 27 has roughly box-shaped outward appearance, and therefore, bolt hole 28 is at inwall 27a split shed, and bolt (not shown) is inserted by bolt hole 28.On the other hand, nut attachment groove 29 is arranged in the front boss part 13c of the second bracing or strutting arrangement 13.Then, bolt is inserted in the nut be arranged in nut attachment groove 29.

In this case, for increasing the part of bolt hole 28 thickness in case the stage portion 30 strengthening intensity be formed in front side the second recess 27 inner panel 25a in.On the other hand, overlapping with the stage portion 30 of front side second recess 27 cut portion 31 is formed in the front boss part 13c of the second bracing or strutting arrangement 13.In addition, overlapping with the edge of opening of front side second recess 27 flange 13e is arranged in the front boss part 13c of the second bracing or strutting arrangement 13.

(3) lumbar supports component

Then, below, main reference Fig. 7 (A) describes lumbar supports component 11 to Fig. 7 (C).Lumbar supports component 11 is made up of molded products, molded products by resin raw material manufacture and by there are certain flexible raw material such as, polypropylene formed.In addition, lumbar supports component 11 has horizontal extension in the lateral direction and crosses the shape of backrest 3.In plan view, lumbar supports component 11 is spill bending gradually forward.In addition, in vertical section side view, lumbar supports component 11 is convex slightly bending forward.

There is prism-shaped and rearwardly projecting slip boss component 34 is formed on two ends, the left and right place of lumbar supports component 11.Slip boss component 34 is assembled in the guiding frame part 35 of extending in the vertical direction can be free to slide mode, and guiding frame part 35 is arranged in the side member 9a of backrest 3.As shown in Fig. 6 (A) and Fig. 6 (B), the inner circumferential of guiding frame part 35 is made up of plate portion, then, above-mentioned front side second recess 27 is connected to integratedly the upper end of guiding frame part 35.

As shown in Fig. 7 (A) to Fig. 7 (C), there is block shape and the forward exposed portion 36a be arranged in button 36 is assembled in the rear end of slip boss component 34.The forward exposed portion 36a of button 36 utilizes bolt (not shown) to be fixed to slip boss component 34.Nut inserts groove 37 and is arranged in slip boss component 34.Can progressively to regulate the mode of height to keep lumbar supports component 11.In addition, as shown in Fig. 6 (A), as arrangement for adjusting height, a large amount of stop hole 38 is arranged on a large amount of place of vertical stage in the inner panel of guiding frame part 35.

In addition, extensively employing lumbar supports component is arranged on the structure in backrest.But, usually, in many cases, on the rear side that lumbar supports component is arranged in mat or be arranged on the rear side of net materials.But, when mat or net materials are piled between supporting member and health between waist, in some cases, expect that the people of strong " against sensation " feels dissatisfied.In addition, under the certain situation of situation not being provided with mat or net as backrest, lumbar supports component needs to be disposed on the nearside of backboard.

As the example of this situation, JP-A-2008-237333 discloses a kind of method, and formed at backrest by frame part and the backboard be arranged in inside it and arranged the structure of a large amount of slit at backboard, lumbar supports component is arranged on the nearside of backboard.In addition, the document discloses following structure: be assembled to clip-type hand frame part from outside being integrally provided on the end, two, left and right of lumbar supports component, and therefore, frame part by hand flexibly keeping from below.

But, as in above-mentioned prior art patent document, from outside by hand in the structure be assembled on frame part, hand is outside the left and right running out of frame part, and therefore, expection has following trouble: the clothes of people is stuck in handle, or alternatively, object, against hand handle, makes to go smoothly impaired.In addition, hand maintains height by means of only friction, and therefore, occurs following possibility, that is, lumbar supports component is by the body pressure of seated person slide (such as, rise or decline).

On the contrary, in the present embodiment, the guiding frame part 35 of the through skeleton 9 of slip boss 34 in the end, two, left and right of lumbar supports component 11 is arranged on.Therefore, button 36 can be arranged to not run out of outside the left and right of skeleton 9.By means of this point, clothes is stuck in button 36 or alternatively object can be avoided against the situation of button 36, or is alternatively significantly inhibited.In addition, the level keeping means that constructed by stop hole 38 is easily provided to regulate for the height of guiding frame part 35.Therefore, lumbar supports component 11 can with the At The Height not allowing the mode departing from movement to be maintained at expectation.

Herein, arrangement for adjusting height can utilize various structure.When picture arranges stop hole 38 in this embodiment in guiding frame part 35, be coupled to guiding frame part 35 and be arranged on the block shape forward exposed portion of button 36 just enough from the elastic component that guiding frame part 35 is dismantled.Guiding frame part 35 has forward a certain amount of and width backward, and therefore, the through intensity that do not cause of slip boss component 34 declines.Button 36 can manufacture with simple plate shape, then, button 36 can be screwed to slip boss component 34.

(4) structure of backrest

Then, in backrest 3, the main details describing the structure of body-support portion 10 with reference to Fig. 8 to Figure 10 below.As shown in Figure 8, in the present embodiment, body-support portion 10 comprises: the side stay bar of horizontal extension 40 groups, and this side stay bar 40 is connected to left and right sides component 9a; With the central stay 41 of one group of horizontal extension, this central stay 41 is between side stay bar 40 groups.Under stay 40 and 41 groups are both disposed in the state departed from up and down.Middle section is by central stay 41 set constructor, and side region is by side stay bar 40 set constructor.

In addition, the left and right end of adjacent in the lateral direction central stay 41 is connected by connector (joint stay) 42 integratedly with the end of side stay bar 40.In this case, in the lateral direction, between the end and the end of central stay 41 of side stay bar 40, there is minim gap.Therefore, connector (joint stay) 42 is in inclination attitude in front view.In addition, central stay 41 and side stay bar 40 are arranged in the mode departed from up and down, and therefore, connector (joint stay) 42 adjacent is in the vertical direction in the posture of opposed orientation.In addition, the base portion of adjacent in the vertical direction connector (joint stay) 42 is connected with 41 integratedly with stay 40.Therefore, connector (joint stay) 42 groups has zigzag in front view.

Backrest 3 shrinks, and the part near downside is narrowed in front view.Therefore, bandy concave shape is formed together with the side member 9a of backrest 3.In addition, connector (joint stay) 42 is also that bandy spill is to follow the shape of side member 9a in front view.In addition, side member 9a and central stay 41 have roughly the same length in the lateral direction.

Side stay bar 40 and central stay 41 have slab structure, and its front-back is wide.But, as shown in Figure 10, rib 43 side stay bar 40 below and central stay 41 after in arrange integratedly.Therefore, the cross section of side stay bar 40 and the cross section of central stay 41 have side T-shaped.Rib 43 below with connector (joint stay) 42 below in same plane.Connector (joint stay) 42 has the outward appearance of faciola plate, and therefore, can easily be out of shape, and makes the angle of side V broaden or narrow.That is, in lumbar supports component 111, the density of stay 140 and 141 is high.By means of this point, lumbar supports part has higher rigidity than other parts.

Side stay bar 40 groups and central stay 41 groups are disposed in place of a large amount of vertically stages.Therefore, between the side stay bar 40 that the space 44 of horizontal extension is adjacent in the vertical direction respectively in the lateral direction and be empty between central stay 41.In addition, in the present embodiment, except lumbar supports part, the vertical width dimensions in space 44 is 2 times of the vertical width of stay 40 or 41 etc.In waist heap support section, the vertical width dimensions in space 44 is roughly set to the level identical with the vertical width of stay 40 or 41.Therefore, lumbar supports part has higher rigidity.

From the beginning, the vertical width of side stay bar 40 and central stay 41 and pitch (density) can be arbitrarily set.Such as, the vertical width dimensions in stay 40 or 41 and space 44 can be configured to entirety in the vertical direction and be in roughly the same level.Alternatively, the vertical width dimensions of stay 40 or 41 can be configured to the vertical width dimensions being less than space 44 on the whole.

In addition in the present embodiment, body-support portion 10 is constructed by two row's side stay bars 40 and row's central stay 41.But available structure need not be limited to this.That is, central stay 41 can not be set, and therefore, body-support portion 10 can construct by left and right sides stay 40 and by the connector (a joint stay) 42 for connecting this left and right sides stay 40 stay.Alternatively, body-support portion 10 can be constructed by two row's side stay bars 40 and two row's intermediate stays between this side stay bar 40.When arranging two row's intermediate stays, three connectors (three joint stays) 42 are necessary.In addition, body-support portion 10 can by five row's stay set constructors, and five row's stay groups arrange central stay 41 by two row's side stay bars 40, one and two row's intermediate stays are formed.In addition, backrest 3 can utilize other to construct.

(5) sum up

Then, referring to Figure 11, operation is described.First, swinging condition is described below.

Such as, under swinging condition, the body pressure of seated person acts on backrest 3 from front, as indicated by arrow F.In addition, the load acted on backrest 3 is supported by the first bracing or strutting arrangement 12 and the second bracing or strutting arrangement 13.In addition, as the instruction by arrow Y, the first bracing or strutting arrangement 12 can perform flexural deformation, and upper end is moved backward by the load from front in side view.On the other hand, as indicated by arrow X, the second bracing or strutting arrangement 13 can perform flexural deformation, and end is moved in plan view backward.But because the second bracing or strutting arrangement 13 has high rigidity, so the back of the body framework 4 of backrest 3 is kept securely by the second bracing or strutting arrangement 13, and therefore the lumbar vertebrae of seated person is kept with gratifying stability.

On the other hand, act on to a great extent on the upper end in backrest 3 by waving the moment caused.But the first bracing or strutting arrangement 12 has the rigidity lower than the second bracing or strutting arrangement 13, and therefore easily perform buckling deformation according to body pressure.Therefore, when waving, backrest 3 can perform buckling deformation, makes the upper end of backrest 3 near the upper end of back of the body framework 4.This buckling deformation of backrest 3 can improve the buffering property when waving.

In addition, under swinging condition, when people edge is right or left direction twists above the waist or alternatively make shoulder along the right side or left direction displacement, about two the spring section 12a forming the first bracing or strutting arrangement 12 perform flexural deformation unevenly, backrest 3 can be out of shape and distortion to follow twisting or the displacement of health.Therefore, backrest 3 can follow the change of the posture of health.As a result, comfortableness can improve.

As can be clearly seen from Figure 11, backrest 3 is prone spill gradually in the planes.Bending degree is maximum near lumbar supports component 11, and upper end is under almost smooth state.Therefore, be kept the state such as do not departed to the right or left at lumbar vertebrae under, shoulder (or near shoulder part) can easily left and right sidesing shifting.In addition, from this point, can obtain high-comfort.

As shown in Fig. 2 (B), under the neutral state that seated person does not lean against on backrest 3, backrest 3 presents slightly sweptback posture, and lumbar supports component 11 is positioned on front side.In addition, when user performs bending over one's desk working of such as PC operation, user takes lumbar vertebrae against the posture of the lumbar supports component 11 of backrest 3.But, because the second bracing or strutting arrangement 13 has high rigidity, so backrest 3 does not perform the buckling deformation be associated with the body pressure of the seated person be under neutral state, and therefore, the lumbar vertebrae of people by backrest 3 with gratifying stability support.Therefore, the upper part of the body of user can not become unstable and be maintained in the straight and upright preferred posture in back.Therefore, the posture be originally configured under neutral state (non-rocking state) maintains function aspects and also has superiority.

Because side stay bar 40 and central stay about 41 depart from, and connector (joint stay) 42 has zigzag structure, so the backrest 3 of the present embodiment can perform buckling deformation, makes body-support portion 10 press to afterwale according to the body of seated person.Therefore, be originally configured in and have superiority with the fitting character aspect of user's body and also to have superiority in the properties of following of health movement.

In addition, when connector (joint stay) 42 adjacent in the vertical direction distortion makes mutual subtended angle (angle of V) diminish, there is the trend that central stay 41 departs from backward.As a result, body-support portion 10 is out of shape thus to afterwale.Which increase the buffering to user's body and fitting character.

The application is based on the U.S. Provisional Patent Application (61/831,763) submitted on June 6th, 2013, and the content of this provisional application is incorporated to herein by reference.

Industrial applicibility

The present invention can provide the chair of the comfortableness of a kind of improvement under dependence state.In addition, can provide a kind of and can guarantee intensity, manufacturing time and energy can be saved and the chair of mass change can be prevented.

List of numerals

1 leg device

2 seats

3 backrests

4 back of the body frameworks

5 leg pillars

6 central tubes

7 base portions

8 joint member

9 skeletons

9a side member

9b upper member

9c lower member

10 body-support portion

11 lumbar supports components

12 first bracing or strutting arrangements

12a spring section

The upper attachment part of 12b

Attachment part under 12c

13 second bracing or strutting arrangements

13a arm section

13b rear boss part

13c front boss part

13e flange

First recess on rear side of in the of 15

16 first bolts

18 inwalls

19 midfeathers

22 second bolts

23 nut retaining parts

24 retainers

Second recess on rear side of in the of 25

25a inner panel

26 the 3rd bolts

Second recess on front side of in the of 27

28 bolts hole

29 nut attachment grooves

30 step parts

31 cut portions

34 slip boss components

35 guiding frame parts

36 buttons

36a forward exposed portion

37 nuts insert groove

38 stop hole

40 side stay bars

41 central stay

42 connectors

43 ribs

44 spaces

Claims (17)

1. chair, comprising:
Seat;
Backrest; With
Back of the body framework, described back of the body framework has rigid structure and is disposed in the rear of described backrest, and has interval between described back of the body framework and described backrest, wherein
Described backrest is by the first bracing or strutting arrangement and be attached to described back of the body framework by the second bracing or strutting arrangement, described first bracing or strutting arrangement is disposed in the height and position place of the upper end near described backrest, described second bracing or strutting arrangement is disposed in lower than described first bracing or strutting arrangement and higher than seat surface position
Described first bracing or strutting arrangement is attached to the part in the middle part of the left and right of the upper end in described backrest, and
Described second bracing or strutting arrangement is attached to left part and the right part of described backrest.
2. chair according to claim 1, wherein
Described first bracing or strutting arrangement has following elastic strength, and when the body pressure of seated person acts on described backrest, described elastic strength allows buckling deformation and allows the top of described backrest move backward and depart from thus, and
The rigidity that described second bracing or strutting arrangement has makes, even if when the body pressure effect of seated person, flexural deformation does not also occur substantially, or alternatively, although the body pressure of described seated person causes elastic deformation, but the elastic strength that described second bracing or strutting arrangement has makes to utilize described elastic strength, the size of the elastic deformation of described second bracing or strutting arrangement is lower than the size of the elastic deformation of described first bracing or strutting arrangement.
3. chair according to claim 1, wherein
Described first bracing or strutting arrangement is in the posture of extending in the vertical direction in side view, and described second bracing or strutting arrangement is divided into two parts in left and right, and left and right second bracing or strutting arrangement is in inclination attitude in plan view, make the interval of described left and right second bracing or strutting arrangement along with moving towards comparatively nearside and broadening.
4. chair according to claim 1, wherein
Described back of the body framework comprises a pair left vertically elongate member and the vertical elongate member in the right side, and these left vertically elongate member and the vertical elongate member in the right side tilt to make along with upwards narrower intervals, and upper end is connected integratedly by coupling part, and
Described first bracing or strutting arrangement is attached to the described coupling part of described back of the body framework, and described second bracing or strutting arrangement is attached to the vertical elongate member of the vertical elongate member in a described left side and the described right side.
5. chair according to claim 1, wherein
Described backrest comprises main member, and described main member is by resin manufacture and be attached to described back of the body framework,
Described main member comprises skeleton and body-support portion, and described skeleton has ring-shaped and forms periphery, and described body-support portion is positioned at the inner side of described skeleton, and
Described body-support portion is provided with a large amount of slit or hole to have the intensity making the body pressure-volume of seated person easily cause distortion.
6. chair according to claim 5, wherein
Arrange mat in before described main member, and at least described mat is covered by skin material.
7. chair according to claim 5, wherein
The lower end of described main member is oriented near described seat surface,
Lumbar supports component for supporting the lumbar portion of seated person to be disposed in before described main member or below, and in addition,
Described main member is attached to described second bracing or strutting arrangement in the position a little more than described lumbar supports component.
8. chair according to claim 1, wherein
When the body pressure effect of seated person, described backrest tilts backwards.
9. the backrest of chair, wherein
Body-support portion is made up of multiple region, and the body pressure of seated person acts in described body-support portion, and described multiple region is divided into region, left and right, and has a certain amount of interval between region, described left and right,
Each region is made up of a large amount of stays of horizontal extension in the lateral direction,
Described stay in adjacent area is arranged in the mode departed from the vertical direction,
Adjacent stay in adjacent area is linked together by the connector in inclination attitude in front view, and
The inclination attitude of connector adjacent on described above-below direction is thus opposite each other.
10. the backrest of chair, wherein
Body-support portion is made up of multiple region, and the body pressure of seated person acts in described body-support portion, and described multiple region is divided into lower regions, and has a certain amount of interval between described lower regions,
Each region is made up of a large amount of stay vertically extended,
Described stay in adjacent area is arranged in the mode departed from the lateral direction,
Adjacent stay in adjacent area is linked together by the connector in inclination attitude in front view, and
The inclination attitude of described connector adjacent on described left and right directions is thus opposite each other.
The backrest of 11. chairs according to claim 9, wherein
In front view, the width of described connector is less than the width of described stay.
The backrest of 12. chairs according to claim 10, wherein
In front view, the width of described connector is less than the width of described stay.
The backrest of 13. chairs according to claim 11, the base portion of wherein adjacent on described above-below direction or described left and right directions connector is close to each other, and described connector adjacent on described above-below direction or described left and right directions is formed with V-shaped configuration.
The backrest of 14. chairs according to claim 12, wherein
The base portion of connector adjacent on above-below direction or described left and right directions is close to each other, and described connector adjacent on described above-below direction or described left and right directions is formed with V-shaped configuration.
The backrest of 15. chairs according to claim 9, comprises further:
Middle section, described middle section is positioned at the central authorities on described left and right directions; With
Be arranged in the left and right sides region on the left and right sides of described middle section, described middle section is made up of central stay group, and described side region is made up of side stay bar, wherein
For connector group that central stay group and side stay bar group are linked together with zigzag formation of structure.
The backrest of 16. chairs according to claim 9, wherein
For in the position to the lumbar supports part supported near the lumbar portion of seated person, the density of described stay is high.
The backrest of 17. chairs according to claim 9, wherein
Each stay has plate shape structure, in described plate shape structure, plate thickness is in the longitudinal direction less than vertical width, and the rib extended on described left and right directions be formed on each stay below in, and described rib is also integrally connected to described connector.
CN201480032425.9A 2013-06-06 2014-06-06 Chair CN105263367A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US201361831763P true 2013-06-06 2013-06-06
US61/831,763 2013-06-06
PCT/JP2014/065094 WO2014196630A1 (en) 2013-06-06 2014-06-06 Chair

Publications (1)

Publication Number Publication Date
CN105263367A true CN105263367A (en) 2016-01-20

Family

ID=52008259

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201480032425.9A CN105263367A (en) 2013-06-06 2014-06-06 Chair

Country Status (4)

Country Link
US (1) US20160135603A1 (en)
JP (4) JP6353443B2 (en)
CN (1) CN105263367A (en)
WO (1) WO2014196630A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107080384A (en) * 2016-02-15 2017-08-22 英特施图尔办公室家具股份有限两合公司 Backrest for office chair
CN108814082A (en) * 2018-07-05 2018-11-16 池州市佳月软件开发有限公司 A kind of comfortable office chair of use in winter
TWI657775B (en) * 2016-03-16 2019-05-01 及樺實業股份有限公司 Seat lumbar support device

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9560917B2 (en) * 2014-11-26 2017-02-07 Steelcase Inc. Recline adjustment system for chair
BR112017022038A2 (en) * 2015-04-13 2018-07-03 Steelcase Inc seat arrangement
US10463153B2 (en) 2016-06-09 2019-11-05 Steelcase Inc. Seating arrangement
EP3518708A4 (en) 2016-09-29 2020-05-27 Steelcase Inc. Compliant seating structure
DE102017001503A1 (en) * 2017-02-16 2018-08-16 Oliver Deichmann A chair, in particular an office chair, with a mechanism acting between the seat surface and the backrest, by means of which the inclination resistance of the backrest is dependent on the load on the seat surface. The seat is at least partially raised depending on the load on the backrest.
USD852525S1 (en) 2017-05-25 2019-07-02 Steelcase Inc. Seating arrangement
USD851417S1 (en) 2017-05-25 2019-06-18 Steelcase Inc. Seating arrangement
USD851952S1 (en) 2017-05-25 2019-06-25 Steelcase Inc. Seating arrangement
USD827352S1 (en) 2017-05-25 2018-09-04 Steelcase Inc. Seating arrangement
USD852526S1 (en) 2017-05-25 2019-07-02 Steelcase Inc. Seating arrangement
USD851418S1 (en) 2017-05-25 2019-06-18 Steelcase Inc. Seating arrangement
USD846294S1 (en) 2017-05-25 2019-04-23 Steelcase Inc. Seating arrangement
USD852524S1 (en) 2017-05-25 2019-07-02 Steelcase Inc. Seating arrangement
US10813463B2 (en) 2017-12-05 2020-10-27 Steelcase Inc. Compliant backrest
USD869889S1 (en) 2017-12-05 2019-12-17 Steelcase Inc. Chairback
USD869890S1 (en) 2017-12-05 2019-12-17 Steelcase Inc. Chairback
USD869872S1 (en) 2017-12-05 2019-12-17 Steelcase Inc. Chair
USD870479S1 (en) 2017-12-05 2019-12-24 Steelcase Inc. Chair
CN109549386A (en) * 2018-04-12 2019-04-02 浙江玛拉蒂智能家具科技有限公司 A kind of ergonomic chair
US10426269B1 (en) * 2018-04-30 2019-10-01 Buzz Seating, Inc. Chair with appendage accommodations
USD908411S1 (en) * 2018-09-25 2021-01-26 Kumar Rajaratnam Seatback cover
USD907383S1 (en) 2019-05-31 2021-01-12 Steelcase Inc. Chair with upholstered back
USD907935S1 (en) 2019-05-31 2021-01-19 Steelcase Inc. Chair

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6709060B1 (en) * 2003-07-03 2004-03-23 Tung-Hua Su Chair backrest
CN101242756A (en) * 2005-08-18 2008-08-13 伊藤喜有限公司 Chair
CN201175137Y (en) * 2008-03-07 2009-01-07 吴耀全 Improved chair back
US7568765B2 (en) * 2005-10-03 2009-08-04 Vitra Patente Ag Chair
US7896438B2 (en) * 2006-09-29 2011-03-01 Sunrise Medical Hhg, Inc. Shapeable wheelchair seatback assembly
CN201958277U (en) * 2011-01-28 2011-09-07 陈育成 Multistage seatback frame

Family Cites Families (69)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS471881Y1 (en) * 1968-07-29 1972-01-22
GB1584270A (en) * 1977-04-04 1981-02-11 Youngflex Sa Seats
US5249839A (en) * 1991-11-12 1993-10-05 Steelcase Inc. Split back chair
JP3156172B2 (en) * 1994-11-28 2001-04-16 株式会社光製作所 Chair made of metal pipe frame
US5909923A (en) * 1997-10-24 1999-06-08 Steelcase Inc. Chair with novel pivot mounts and method of assembly
EP0970639A1 (en) * 1998-07-07 2000-01-12 Provenda Marketing Ag Adjustable lumbar support
JP3884186B2 (en) * 1998-07-09 2007-02-21 株式会社岡村製作所 Chair
WO2000022959A1 (en) * 1998-10-20 2000-04-27 Protoned B.V. Chair mechanism
JP2000270962A (en) * 1999-03-24 2000-10-03 Okamura Corp Flexible base plate for chair
US6220661B1 (en) * 1999-04-19 2001-04-24 Steelcase Development Inc. Chair back and method of assembly
CA2371901A1 (en) * 1999-06-17 2000-12-28 Steelcase Inc. Chair construction
US6254190B1 (en) * 1999-09-29 2001-07-03 Peter G. G. Gregory Chair having a seat with differential front and rear support portions
JP4316748B2 (en) * 1999-11-08 2009-08-19 株式会社岡村製作所 Chair
US6382719B1 (en) * 2000-05-04 2002-05-07 Steelcase Development Corporation Back construction
ITTV20000084A1 (en) * 2000-07-21 2002-01-21 Sitting Snc Di Bordin Giacinto Ergonomic chair-armchair structure particularly for office, of the type equipped with adjustable headrest and backrest
JP2002119366A (en) * 2000-10-16 2002-04-23 Kokuyo Co Ltd Chair
IT1315528B1 (en) * 2000-10-18 2003-02-18 Enrico Cioncada Adjustable chair
GB0106247D0 (en) * 2001-03-14 2001-05-02 Williams David N L Improvements relating to supports
US6609755B2 (en) * 2001-06-15 2003-08-26 Hon Technology Inc. Ergonomic chair
US7014269B2 (en) * 2001-06-15 2006-03-21 Hon Technology Inc. Chair back construction
US6568760B2 (en) * 2001-06-15 2003-05-27 Hon Technology Inc. Chair of modular construction
US20020195855A1 (en) * 2001-06-20 2002-12-26 Teppo David S. Shape-changing support, such as for seating
US6565153B2 (en) * 2001-07-31 2003-05-20 Johnson Controls Technology Corporation Upper back support for a seat
JP3834502B2 (en) * 2001-11-05 2006-10-18 株式会社岡村製作所 Reclining chair
GB2414176B (en) * 2002-02-13 2006-09-13 Miller Herman Inc Tilt chair having a flexible back, adjustable armrests and adjustable seat depth, and methods for the use thereof
KR100767959B1 (en) * 2002-07-23 2007-10-17 오카무라 가부시키가이샤 Chair
ITTO20020775A1 (en) * 2002-09-06 2004-03-07 Pro Cord Spa Chair back.
US7048335B2 (en) * 2003-06-05 2006-05-23 Steelcase Development Corporation Seating unit with crossbar seat support
US20040140701A1 (en) * 2002-10-15 2004-07-22 Burkhard Schmitz Backrest for a seating structure with an adjustable sacral support
US20050062323A1 (en) * 2003-06-11 2005-03-24 Dicks Gerald G. Chair
US7237841B2 (en) * 2004-06-10 2007-07-03 Steelcase Development Corporation Back construction with flexible lumbar
US7458637B2 (en) * 2004-06-10 2008-12-02 Steelcase Inc. Back construction with flexible lumbar
CA2600308C (en) * 2005-03-01 2013-11-26 Haworth, Inc. Chair back
JP5002835B2 (en) * 2005-10-27 2012-08-15 コクヨ株式会社 Member connection structure
JP4719905B2 (en) * 2005-10-27 2011-07-06 コクヨ株式会社 Chair
JP4721183B2 (en) * 2005-11-11 2011-07-13 コクヨ株式会社 Spring mounting structure
JP4747311B2 (en) * 2005-11-11 2011-08-17 コクヨ株式会社 Chair
EP1952723A4 (en) * 2005-11-14 2013-04-03 Okamura Corp Headrest device of chair
US7226127B1 (en) * 2005-12-21 2007-06-05 Tk Canada Limited Ergonomic chair backrest
JP4015673B2 (en) * 2006-04-10 2007-11-28 株式会社岡村製作所 Chair backrest board
JP4996240B2 (en) * 2006-08-30 2012-08-08 株式会社イトーキ Chair
CN200953958Y (en) * 2006-09-30 2007-10-03 苏同华 Sitting-chair back
EP2092855B1 (en) * 2006-11-10 2012-05-02 Okamura Corporation Backrest device for chair
JP5132917B2 (en) * 2006-11-10 2013-01-30 株式会社岡村製作所 Chair backrest device
US7874619B2 (en) * 2007-01-29 2011-01-25 Allseating Corporation Adjustable lumbar support for a chair back
CN102151023B (en) * 2007-01-29 2015-09-02 赫尔曼米勒有限公司 Seat structure and using method thereof
CA2895942A1 (en) * 2007-03-13 2008-09-13 Hni Technologies Inc. Dynamic chair back lumbar support system
US7857388B2 (en) * 2007-06-01 2010-12-28 Steelcase Inc. Seating unit with adjustable lumbar device
JP5347141B2 (en) * 2008-01-16 2013-11-20 コクヨ株式会社 Chair
US7775601B2 (en) * 2008-03-17 2010-08-17 Yao-Chuan Wu Back structure for a chair
WO2010044331A1 (en) * 2008-10-16 2010-04-22 株式会社岡村製作所 Chair
JP5460997B2 (en) * 2008-10-20 2014-04-02 タカノ株式会社 Hinge structure and chair back support structure using it
JP5434211B2 (en) * 2009-04-09 2014-03-05 トヨタ紡織株式会社 Assembly structure of sheet-like elastic body for vehicle seat
JP5467814B2 (en) * 2009-08-19 2014-04-09 株式会社イトーキ Chair back or seat
US20110215623A1 (en) * 2010-03-04 2011-09-08 Hsuan-Chin Tsai Height-Adjusting Assembly for Office Chair Backrest
US8449037B2 (en) * 2010-04-13 2013-05-28 Herman Miller, Inc. Seating structure with a contoured flexible backrest
US8408647B2 (en) * 2010-05-21 2013-04-02 Yao-Chuan Wu Movable chair backrest
US8272691B2 (en) * 2010-06-04 2012-09-25 Fuh Shyan Co., Ltd. Resilient lower-back supporting device capable of vertical adjustment along with backrest of chair
JP5527026B2 (en) * 2010-06-04 2014-06-18 トヨタ紡織株式会社 Vehicle seat
JP5671280B2 (en) * 2010-08-20 2015-02-18 株式会社イトーキ Chair shoulderrest or backrest or headrest
US20120193959A1 (en) * 2011-02-01 2012-08-02 Ching-Ming Chen Automatic waistrest adjusting device for office chairs
TWM414875U (en) * 2011-06-24 2011-11-01 Fuh Shyan Co Ltd Elastic leaning and restoration device of lifting back of office chair
US8613484B2 (en) * 2012-05-18 2013-12-24 Genius Champion Enterprises Co., Ltd. Detachable chair
US8528980B1 (en) * 2012-06-26 2013-09-10 Fu-Chih Hsiao Seat back unit
US8998339B2 (en) * 2012-09-20 2015-04-07 Steelcase Inc. Chair assembly with upholstery covering
CN105101845B (en) * 2013-03-15 2018-11-09 Hni技术公司 The chair of backrest bending with triggering
US9357849B2 (en) * 2013-10-10 2016-06-07 James E. Grove Dynamic lumbar support for a chair
US9192234B2 (en) * 2014-01-28 2015-11-24 James E. Grove Progressively curved lumbar support for the back of a chair
US9237811B1 (en) * 2014-11-03 2016-01-19 Patra Co., Ltd. Chair with improved waist bearing power

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6709060B1 (en) * 2003-07-03 2004-03-23 Tung-Hua Su Chair backrest
CN101242756A (en) * 2005-08-18 2008-08-13 伊藤喜有限公司 Chair
US7568765B2 (en) * 2005-10-03 2009-08-04 Vitra Patente Ag Chair
US7896438B2 (en) * 2006-09-29 2011-03-01 Sunrise Medical Hhg, Inc. Shapeable wheelchair seatback assembly
CN201175137Y (en) * 2008-03-07 2009-01-07 吴耀全 Improved chair back
CN201958277U (en) * 2011-01-28 2011-09-07 陈育成 Multistage seatback frame

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107080384A (en) * 2016-02-15 2017-08-22 英特施图尔办公室家具股份有限两合公司 Backrest for office chair
TWI657775B (en) * 2016-03-16 2019-05-01 及樺實業股份有限公司 Seat lumbar support device
CN108814082A (en) * 2018-07-05 2018-11-16 池州市佳月软件开发有限公司 A kind of comfortable office chair of use in winter

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