CN102056512B - Chair with tilting backrest - Google Patents
Chair with tilting backrest Download PDFInfo
- Publication number
- CN102056512B CN102056512B CN2009801208517A CN200980120851A CN102056512B CN 102056512 B CN102056512 B CN 102056512B CN 2009801208517 A CN2009801208517 A CN 2009801208517A CN 200980120851 A CN200980120851 A CN 200980120851A CN 102056512 B CN102056512 B CN 102056512B
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- China
- Prior art keywords
- backrest
- seat
- cursor
- torsion spring
- elastic device
- Prior art date
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Classifications
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- 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
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
- A47C1/03266—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with adjustable elasticity
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
- A47C1/03272—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
- A47C1/03272—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs
- A47C1/03274—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs of torsion type
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- 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
- A47C1/03277—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with bar or leaf springs
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- 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
- A47C1/03277—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with bar or leaf springs
- A47C1/03279—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with bar or leaf springs of torsion type
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/02—Rocking chairs
- A47C3/025—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame
- A47C3/026—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame with central column, e.g. rocking office chairs; Tilting chairs
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
- A47C31/12—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons
- A47C31/126—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons for chairs
Landscapes
- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Chairs Characterized By Structure (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
Provided is a chair that can reduce the load on a person's head, neck, or the like during a backward or a return tilting movement by adopting the Active Balance Seating (ABS) concept to a general-purpose chair such as an office chair. The chair includes a first elastic means exerting an urging force in the return direction relative to the movement of a rotative arm for causing the backrest to tilt backward, and a second resilience providing means having an urging force in a pulling direction parallel to the forward direction of the seat, wherein the resilience characteristics of the first and the second elastic means are adjusted such that the reactive force against the back during the backward tilting movement of the backrest increases linearly, and the change in the reactive force against the back during the return tilting movement is in proportion to the change in the reactive force against the back during the backward tilting movement.
Description
Technical field
The present invention relates to a kind of seat, particularly a kind of seat of back inclinable.
Background technology
In the past, as the tilting gearing of seat, proposing had following technical proposals, in the tiltable mode, the seat of back bracket was installed on the fixed frame on the top of leg pillar, was provided with torsion spring, and an one arm is fixed in described fixed frame; Functional component, it is connected with described back bracket, slidably supports another arm of described torsion spring; And carriage, it is along with the hypsokinesis of described back bracket, and the induced effect parts move along another arm, make on the position that another arm shortens (for example, referring to Patent Document 1) so that this functional component is supported in.
if adopt this structure, can obtain following effect, by the gravity motion along with the load of hypsokinesis, even putting on the variable quantity of the load of functional component increases, due to functional component along with hypsokinesis acts on spring on the position with the contraction in length of another arm of spring, so can reduce the displacement with respect to the spring of the variable quantity of loading, in whole slant range, make stable with respect to the displacement (reaction force) of the spring of tilt quantity, thereby can provide inclination sensation stable in the body sense, particularly in the inclination final stage, can guarantee to have no the inclination sensation of unstable sense.
Yet taking one's seat on the seat makes the situation of backrest hypsokinesis, and at first seated person pedals the floor with thenar, and consequent power acts on pelvis via leg joint, knee joint and hip joint, along with the movement of center of gravity makes the backrest hypsokinesis.
The a series of effect of more than illustrating in the stability study for wheelchair that the disabled is taken, and for the non-disabled that can adapt to any seat in the experiment of object be rare dynamically, can say, be the also essence of applicable stability of non-disabled even it has been illustrated.
Like this, as the research of the stability of wheelchair, will be called the dynamic equilibrium seat with the technology that is adjusted into target of improving incidence (being designated hereinafter simply as " ABS ") will be set.
Patent documentation 1:(Japan) Unexamined Patent 07-289383 communique
Summary of the invention
Above-mentioned prior art, the gravity motion of seated person when being conceived to hypsokinesis provides the sense of stability of hypsokinesis final stage (maximum angle of hypsokinesis).If consider the movement of the starting point of action take above-mentioned thenar as hypsokinesis, the prior art is not removed the burden of the incidence that causes because of hypsokinesis.
That is, in existing seat, do not form and can make by above-mentioned a series of effects the structure of naturally and understandably hypsokinesis of backrest, seated person uses dorsal muscles and topples over backrest with thorax.In addition, special because the thin plate of seat surface and backrest does not form the structure that can support above-mentioned a series of effects, so the power that will produce in the time of will not pedaling the floor with thenar passes to pelvis well.Therefore, as mentioned above, consider from the viewpoint of gravity motion, compare with existing seat, although removed unstable sense, produce the dorsiflex reflection when existing hypsokinesis, add the problem of bearing to health.
Generally speaking, the people is doing when motion of leaning forward, and is actually doing the musculus ventralis motion of health.Seated person switch to be implemented the situation of reversed dip by rear-inclined, before carrying out above-mentioned musculus ventralis motion, at first implement resulting from crooknecked gravity motion.In above-mentioned prior art, the bodily protection in relevant this reversed dip is not provided support.Therefore, because backrest is not supported above-mentioned body kinematics fully, so in reversed dip, exist the problem that neck bears heavy load yet.
Therefore, the present invention is applied to the ABS concept the general seat such as office seating, alleviates the seat of the load of the health of incidence etc. in rear-inclined and reversed dip as problem to provide a kind of in view of the focus of described problem.
In order to address the above problem, the seat that the present invention relates to has the bearing on the top of being fixed in the leg pillar, the seat support section that is arranged at this bearing top and the vertical backrest of being located at the rear of this seat support section, in order to make this backrest inclination, is provided with tumbler; It is characterized in that: described tumbler, have cursor, one end axle in a rotatable manner is supported on bearing, and the other end is fixed in backrest, makes backrest inclination; The first elastic device, its rotation with respect to the cursor that makes the backrest rear-inclined has eccentric force along opposite direction; With the second elastic device, its rotation with respect to the cursor that makes the backrest rear-inclined has the eccentric force of the draw direction of the place ahead direction that is parallel to described seat support section; By adjusting the elastic characteristic of described the first elastic device and the second elastic device, reaction force is increased at the rear-inclined neutral line of backrest, and make variation and its variation at described rear-inclined of reaction force in reversed dip be homophase.
If adopt this structure, according to the ABS concept, by means of the effect of the complementation of the first elastic device and the second elastic device, the reaction force of the backrest during due to hypsokinesis is linear to be increased, therefore in rear-inclined, along with the increase of reaction force, along with the hypsokinesis angle becomes greatly gently effect; And in reversed dip, from the initial movable of the incidence implemented prior to gravity motion, according to the track effect identical with rear-inclined.
Described the first elastic device can use torsion spring, and it is inner that it is arranged at described bearing, and at the moving chimeric axle that described cursor is arranged of winder, an end engaging is in cursor, and the other end is fixed in the mode along the direction capable of regulating reaction force of the rear-inclined of resistance backrest.
In addition, described the second elastic device, can use extension spring, it is inner that it is arranged at described bearing, the hook of extension spring one end is fixed on the hook fixed part that arranges in the front portion of the base of described bearing, and the hook of the other end is fixed on the linkage portion that is connected with described cursor, if cursor makes the backrest rear-inclined, along with the movement of the described linkage portion of the rotation of this cursor interlock, produce the stretching reaction force.
In addition, the tilting action that the present invention relates to for example, can use whole flat spring to realize by adjusting spring performance, does like this problem that durability is low, cost is high that exists.Therefore, consider the situation of durability and cost aspect, adopted the combinations thereof of above-mentioned torsion spring and extension spring.
The seat surface of described seat section can adopt following structure, i.e. make the degree of depth depression of ischial tuberosity section during described inclination, the Center of Pressure of pelvis on seat surface is moved, supporting ischial tuberosity front part in the wide region of front and back.In addition, the thin plate of described backrest can discharge thorax lentamente in the wings when described rear-inclined, from rear supporting pelvis.
The thin plate of this seat surface and backrest can be brought into play the effect of the body burden of supporting seated person when tilting.
That expresses as described above is such, the seat that the present invention relates to has following effect, the power that produces by thenar is the gravity motion realization inclination of opportunity with pedaling, can alleviate the load of incidence in rear-inclined and reversed dip, thereby level and smooth and comfortable inclination sense is provided.
Description of drawings
Fig. 1 is the side view of the seat that the present invention relates to;
Fig. 2 (a) is the state diagram of bearing inside before tilting, and Fig. 2 (b) is the state diagram of bearing inside after tilting;
Fig. 3 is the partial enlarged drawing of explanation reaction force adjusting device;
Fig. 4 (a-1) is the top view of the seat support section that is provided with slit on seat surface, (a-2) be the sectional view of (a-1), (b-1) used the top view of the seat support section of Web materials for seat surface, (b-2) be the sectional view of (b-1);
Fig. 5 is the accompanying drawing of the variation (relation angle of inclination and reaction force between) of diagram backrest when tilting.
The specific embodiment
With reference to Fig. 1, the leg pillar of the seat that Reference numeral 1 expression the present invention relates to, the bottom of leg pillar 1 coordinates inserts in shank 2, and shank 2 has from coordinating socket (not shown), being a plurality of legs of radiated entends with respect to floor along horizontal direction.Shank 2 contacts with floor by the castor 3 that is arranged at each leg leading section.
On the top of leg pillar 1, be provided with and have air spring etc. (not shown) and make leg pillar 1 extending and movable auxiliary section 4 rotationally.4 the top in the auxiliary section is provided with seat frame 7 by bearing 5.This seat frame 7 is by the effect of above-mentioned auxiliary section 4, along with the elongation of leg pillar 1 and rotation and extend and rotate.In addition, bearing 5 is connected with seat frame by convex connecting portion 6 connections in the setting of the top of bearing 5.
Be covered with seat support section 8 on seat frame 7, the vertical backrest 9 that is provided with in the rear end of seat frame 7.In addition, in the lower end of backrest 9, be installed with an end of the cursor 10 that makes backrest 9 inclinations.The other end of this cursor 10 is installed on the rear portion, side of bearing 5 in a rotatable manner.If seated person applies body weight to backrest 9 and leans to, cursor 10 rotates along downward direction, and backrest 9 rear-inclineds namely, are regulated backrest.In addition, unstable when suppressing rear-inclined is provided with fixed axis 11 at the rear portion, side of seat frame 7, and itself and backrest almost parallel ground are erect and arranged; With auxiliary rotary arm 12, itself and cursor 10 arrange substantially parallel, and an end is installed on fixed axis 11 in rotating mode, and the other end is fixedly installed in backrest 9.Therefore, form following linkage: if cursor 10 is for making backrest 9 tilt to rotate, auxiliary rotary arm 12 also links and rotates.
In addition, the left and right sides of the seat that the present invention relates to is provided with this cursor 10, fixed axis 11 and auxiliary rotary arm 12, and namely cursor 10, fixed axis 11 and auxiliary rotary arm 12 all arrange (not shown) in couples.
Bearing 5, inside are provided with the base 51 of each member of the inclination of the backrest 9 that the present invention relates to for control.On base, be provided with the turning cylinder 52 of the above-mentioned left/right rotation swing arm 10 of rotatably support.
Make in the sweptback situation of backrest at cursor 10, for applying reaction force with making on the opposite direction of its sweptback direction of motion of this cursor 10, can use torsion spring 53.Torsion spring 53, has winder, be placed on a turning cylinder 52 in this winder, this winder has intersects two ends of stretching out on the tangential direction of winder mutually, one of them end engaging is on the engaging portion 101 of installing on cursor 10, another end is by means of support 56, by reaction force adjustment part 54 extruding.In addition, 54 top is provided with rail portion 55 in the reaction force adjustment part.
Be provided with interior base 57 in the inside of base, the rotation interlock of itself and turning cylinder 52, and have and prevent that cursor 10 from rotating the locking mechanism that exceeds preset range.
In the present invention, except being provided with above-mentioned torsion spring 53, also be provided with extension spring 58, the hook at its two ends is fixed on two hook steady pins, and these two hook steady pins are arranged at respectively on the front portion (that is, the place ahead direction of seat frame 7) and interior base 57 of base.
Above-mentioned torsion spring 53 and extension spring 58 can respectively arrange one, also a torsion spring 53 and an extension spring 58 can be set all at the left and right sides of support 56, namely are provided with a pair of torsion spring 53 and a pair of extension spring 58.
In present embodiment, use above-mentioned torsion spring 53 and extension spring 58 as elastomeric element, yet be not limited to this for the parts with same function, can use other elastomeric element.
Fig. 2 is the partial enlarged drawing of bearing 5.(a) even stable state of diagram cursor 10 is the state before the backrest rear-inclined; (b) state after the diagram rear-inclined.
With reference to Fig. 2 (a), 53a is the long end section of torsion spring 53, and 53b is the short end section of torsion spring 53.Described with reference to Figure 1, the long end 53a of section and the short end 53b of section mutually intersect on tangential direction from the winder of torsion spring 53 and extend out.The 53b of short end section is set up to be fixed by the state of reaction force adjustment part 54 extruding by support 56 in predetermined adjusted position.In addition, about extension spring 58, Fig. 1 is illustrated as reference, and is anterior at base, is provided with hook steady pin 51a, at interior base 57, is provided with hook steady pin 57a.
In Fig. 2 (b), if cursor 10 rotates, the long end 53a of section is pushed by engaging portion 101, and the short end 53b of section has been fixed, and thus, this long end 53a of section bears the moment of torsion about turning cylinder 52, and then applies reciprocal eccentric force on cursor 10.On the other hand, extension spring 58 is due to the action of the interior base 57 that links along with the rear-inclined with cursor 10, be stretched along the direction with seat frame 7 almost parallels, so produce eccentric force as reaction force along draw direction.Therefore, by the rotation of cursor 10, make backrest 9 rear-inclineds, along with this rear-inclined, by from the above-mentioned eccentric force of torsion spring 53 and effect from the synthetic eccentric force of the above-mentioned eccentric force of extension spring 58, reaction force increases gradually, and the speed of rear-inclined is controlled.
Fig. 3 is the partial enlarged drawing of explanation reaction force adjusting device.In addition, for convenience of description, only be provided with torsion spring 53 in the left side of support 56 in Fig. 3, in fact, also torsion spring 53 can be set on the right side of support 56.
Reaction force adjusting device 54 is made of extruding plate 54a and squeezed compressing tablet 54b, forms respectively the inclined plane with same angle of inclination, and two inclined planes contact in opposite directions.Spiral is inserted with and adjusts screw rod 54c in extruding plate 54a.On the upper surface that is positioned at the inclined plane opposition side of extruding plate 54a, be provided with rail portion 55.The lower surface that is positioned at the inclined plane opposition side of squeezed compressing tablet 54b contacts with the extruding jut 56a of support 56, and extruding jut 56a is to contact with mode that the short end 53b of section of torsion spring 53 intersects.Above-mentioned rail portion 55 is parallel to the length direction setting of the winder of adjusting screw rod 54c and torsion spring 53.
Adjust screw rod 54c along loosening direction or tightening up direction rotation if make, extruding plate 54a moves along rail portion 55.If extruding plate 54a moves, produce to slide in the inclined plane of the inclined plane of extruding plate 54a and squeezed compressing tablet 54b, and along with the inclination on the inclined plane of extruding plate 54a, squeezed compressing tablet 54b moves up and down in the mode that is extruded into below or return-to-home position.
Along with the above-mentioned of squeezed compressing tablet 54b moves up and down, by extruding jut 56a, the short end 53b of section is reversed, and the position of the fulcrum angle of torsion spring 53 changes, thereby torsion spring 53 produces reaction force, makes the above-mentioned eccentric force that derives from torsion spring 53 be adjusted.Adopt this structure, can adjust the best reaction force of the backrest 9 that is determined by the body weight difference of seated person.
In addition, in this example, manually adjust the structure of screw rod 54c although imagined seated person with not shown adjustable dial, be not limited to this structure, can use to have and to detect the seated person body weight and automatically carry out the known features that best reaction force is adjusted.
Fig. 4 is the schematic diagram of the embodiment of expression seat support section 8.In the embodiment shown in Fig. 4 (a-1), towards the depth direction of the seat surface of the seat support 8a of section, be provided with at certain intervals a plurality of elongated slit 81a that extends along perpendicular to above-mentioned depth direction.In these slits 81a, present in face of on the most forward slit 81a of side (left side of figure), be a plurality of comb teeth-shapeds along the direction perpendicular to slit 81a and be formed with chopped mouthful of 82a.
Fig. 4 (a-2) is the sectional view of the seat support 8a of section shown in Fig. 4 (a-1).Deflection deformation f when the curve that the two chain line of use represent on the seat support 8a of section represents that seated person is taken one's seat.This deflection deformation f becomes the Center of Pressure of pelvis bottom.By adopting this structure, compare with the seat support section that is not provided with slit 81a, can make the degree of depth depression of ischial tuberosity section, and then above-mentioned Center of Pressure can be moved in the wide region of front and back.In addition, can utilize otch 82a supporting ischial tuberosity anterior, so-called sliding generation of sitting phenomenon when preventing rear-inclined, the power that will produce in the time of will pedaling the floor with thenar passes to pelvis well.
Fig. 4 (b-1) shows the seat support 8b of section, uses Web materials 82b as the embodiment of seat frame 81b internal material.The side sectional view of Fig. 4 (b-2) shows deflection deformation f, and have the effect identical with the effect that is provided with the slit as shown in Fig. 4 (a-1), (a-2), but use the seat surface of Web materials 82b, the body weight pressure when correspondence is taken one's seat more neatly distributes and action.
In addition, although the structure of seat surface has been described with Fig. 4, but the power that produces in order to pedal the floor with thenar the time passes to pelvis well, thin plate about backrest, the material that preferred use can be brought into play following effects is manufactured, when being described rear-inclined, discharge in the wings lentamente thorax, from rear supporting pelvis.Therefore, for example, the material as the thin plate of backrest preferably uses polyolefin elastomer (polypropylene+crosslinked EPDM20%).
Fig. 5 is the accompanying drawing of the variation (relation between angle of inclination and reaction force) when illustrating backrest inclination, uses more separately the situation and the situation that is used in combination torsion spring and extension spring of torsion spring with this figure.
With the curve that the solid line of Fig. 5 represents, the variation when illustrating the inclination of combination of torsion spring and extension spring; With the curve that the dotted line of Fig. 5 represents, the variation when illustrating the inclination of torsion spring monomer.Solid line a1 and dotted line b1, the variation during the expression rear-inclined; Solid line a2 and dotted line b2, the variation during the expression reversed dip.
Express as Fig. 5, with the situation of the combination of solid line a1, torsion spring that solid line a2 represents and extension spring, be changed to the linear change of line of collimation, the variation of expression rear-inclined and the variation of reversed dip are the roughly variation of homophase, and the difference of reaction force both is less.
On the other hand, the situation of the torsion spring monomer that represents with dotted line b1, dotted line b2 is from the position that the angle of inclination of backrest is about 5 ° of left and right, the variation of reaction force sharply diminishes, in addition, compare with the situation of extension spring combination with above-mentioned torsion spring, the difference of the reaction force of rear-inclined and reversed dip is larger.
According to above explanation, the situation of torsion spring and extension spring combination is compared with the situation of torsion spring monomer, in rear-inclined, because along with the angle of inclination becomes large and the reaction force increase, thus can little by little suppress hypsokinesis speed, thus realize gentle hypsokinesis action; In reversed dip, can realize smoothly the switching by rear-inclined, just like the sort of dynamic reproduction ground effect of rocking chair.Therefore, can think that the combination of torsion spring and extension spring has the effect that the load of the health of incidence when making etc. alleviates.
Description of reference numerals
1 leg pillar
2 shanks
3 castors
4 auxiliary sections
5 bearings
6 connecting portions
7 seat frames
8 seat support sections
9 backrests
10 cursors
Claims (5)
1. seat, have the top of being fixed in the leg pillar bearing, be arranged at seat support section and the vertical backrest of being located at this seat support section rear on this bearing top, in order to make this backrest inclination, be provided with tumbler; It is characterized in that:
Described tumbler has cursor, and the one end is supported on described bearing in a rotatable manner, and the other end is fixed in described backrest, makes backrest inclination; The first elastic device, its rotation with respect to the cursor that makes the backrest rear-inclined has eccentric force along opposite direction; With the second elastic device, its rotation with respect to the cursor that makes the backrest rear-inclined has the eccentric force of the draw direction of the place ahead direction that is parallel to described seat support section;
By adjusting the elastic characteristic of the first elastic device and the second elastic device, reaction force is increased at the rear-inclined neutral line of backrest, and make variation and its variation in described rear-inclined of reaction force in reversed dip be homophase.
2. seat as claimed in claim 1, it is characterized in that: described the first elastic device is torsion spring, and it is inner that it is arranged at described bearing, and the winder of described torsion spring is placed on the axle of described cursor; One end engaging of described torsion spring is on cursor, and the other end is fixed in the mode that can produce the eccentric force of revolting the backrest rear-inclined.
3. seat as claimed in claim 1 or 2, it is characterized in that: described the second elastic device is extension spring, it is inner that it is arranged at described bearing, the hook of extension spring one end is fixed on the hook fixed part that arranges in the front portion of the base of described bearing, the hook of the other end is fixed on linkage portion with the mode hook of the eccentric force that can produce described draw direction, this linkage portion be arranged on described axle and with the rotation interlock of cursor.
4. seat as claimed in claim 3, it is characterized in that: the seat surface of described seat support section adopts following structure, when described inclination, the Center of Pressure of pelvis on seat surface is moved in the wide region of front and back, make the degree of depth depression of ischial tuberosity section, with the front part of supporting ischial tuberosity.
5. seat as claimed in claim 4, it is characterized in that: the thin plate of described backrest discharges thorax lentamente in the wings when described rear-inclined, from rear supporting pelvis.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008148540 | 2008-06-05 | ||
| JP2008-148540 | 2008-06-05 | ||
| PCT/JP2009/002563 WO2009147869A1 (en) | 2008-06-05 | 2009-06-05 | Chair with tilting backrest |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102056512A CN102056512A (en) | 2011-05-11 |
| CN102056512B true CN102056512B (en) | 2013-06-12 |
Family
ID=41397949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009801208517A Expired - Fee Related CN102056512B (en) | 2008-06-05 | 2009-06-05 | Chair with tilting backrest |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP5598855B2 (en) |
| KR (1) | KR20110022040A (en) |
| CN (1) | CN102056512B (en) |
| TW (1) | TW201016170A (en) |
| WO (1) | WO2009147869A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2625225C2 (en) | 2011-10-04 | 2017-07-12 | Формвэй Фурнитуре Лимитед | Armchair and support structures |
| DE202012002288U1 (en) * | 2012-03-08 | 2012-05-11 | Walter Knoll Ag & Co. Kg | functional chair |
| CN103799741B (en) * | 2012-11-01 | 2017-06-20 | 奥弗·巴查 | Backrest, seat unit and method |
| IT201600071468A1 (en) * | 2016-07-08 | 2018-01-08 | Co Fe Mo Ind S R L | OSCILLATION MECHANISM FOR CHAIRS |
| TWI808904B (en) * | 2022-10-04 | 2023-07-11 | 宣禹實業股份有限公司 | Seat back linkage device for chair |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5150948A (en) * | 1989-09-16 | 1992-09-29 | Voelkle Rolf | Reclining chair |
| CN1074361A (en) * | 1991-10-31 | 1993-07-21 | 罗尔夫·福尔克尔 | Stuhl, insbesondere burodrehstuhl |
| US6394546B1 (en) * | 1997-10-24 | 2002-05-28 | Steelcase Development Corporation | Lumbar device |
| CN1775144A (en) * | 2005-12-09 | 2006-05-24 | 黄星浩 | Seat back adjusting device |
| CN101166444A (en) * | 2005-04-28 | 2008-04-23 | 博克一有限两合公司 | Synchronization mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4796950A (en) * | 1987-02-09 | 1989-01-10 | Haworth, Inc. | Tilt mechanism, particularly for knee-tilt chair |
| JPH07289383A (en) * | 1994-04-27 | 1995-11-07 | Tokai Kinzoku Kogyo Kk | Reclining device for chair |
| JP3652401B2 (en) * | 1995-04-25 | 2005-05-25 | 株式会社内田洋行 | Chair back tilt device |
| JP4727805B2 (en) * | 2000-11-06 | 2011-07-20 | 株式会社岡村製作所 | Control lever structure in a chair |
| GB0100388D0 (en) * | 2001-01-06 | 2001-02-14 | Unit Press Ltd | Chairs |
| JP4848099B2 (en) * | 2001-07-18 | 2011-12-28 | タカノ株式会社 | Chair |
| JP4064679B2 (en) * | 2002-02-05 | 2008-03-19 | コクヨ株式会社 | Chair |
-
2009
- 2009-06-05 WO PCT/JP2009/002563 patent/WO2009147869A1/en active Application Filing
- 2009-06-05 KR KR1020117000245A patent/KR20110022040A/en not_active Application Discontinuation
- 2009-06-05 TW TW098118830A patent/TW201016170A/en unknown
- 2009-06-05 JP JP2010515787A patent/JP5598855B2/en active Active
- 2009-06-05 CN CN2009801208517A patent/CN102056512B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5150948A (en) * | 1989-09-16 | 1992-09-29 | Voelkle Rolf | Reclining chair |
| CN1074361A (en) * | 1991-10-31 | 1993-07-21 | 罗尔夫·福尔克尔 | Stuhl, insbesondere burodrehstuhl |
| US6394546B1 (en) * | 1997-10-24 | 2002-05-28 | Steelcase Development Corporation | Lumbar device |
| CN101166444A (en) * | 2005-04-28 | 2008-04-23 | 博克一有限两合公司 | Synchronization mechanism |
| CN1775144A (en) * | 2005-12-09 | 2006-05-24 | 黄星浩 | Seat back adjusting device |
Non-Patent Citations (4)
| Title |
|---|
| JP平3-121013A 1991.05.23 |
| JP特开2002-142899A 2002.05.21 |
| JP特开平7-289383A 1995.11.07 |
| JP特开平8-289825A 1996.11.05 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009147869A1 (en) | 2009-12-10 |
| KR20110022040A (en) | 2011-03-04 |
| TW201016170A (en) | 2010-05-01 |
| JP5598855B2 (en) | 2014-10-01 |
| CN102056512A (en) | 2011-05-11 |
| JPWO2009147869A1 (en) | 2011-10-27 |
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