CN102056512A - Chair with tilting backrest - Google Patents
Chair with tilting backrest Download PDFInfo
- Publication number
- CN102056512A CN102056512A CN2009801208517A CN200980120851A CN102056512A CN 102056512 A CN102056512 A CN 102056512A CN 2009801208517 A CN2009801208517 A CN 2009801208517A CN 200980120851 A CN200980120851 A CN 200980120851A CN 102056512 A CN102056512 A CN 102056512A
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- China
- Prior art keywords
- backrest
- seat
- cursor
- elastic device
- fixed
- 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, the tiltable seat of particularly a kind of backrest.
Background technology
In the past, as the tilting gearing of seat, proposing had following technical proposals, was equipped with in the seat of back bracket in the tiltable mode on the fixed frame on the top of leg pillar, was provided with torsion spring, and an one arm is fixed in the 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, then can obtain following effect, move by center of gravity along with the load of hypsokinesis, even putting on the variable quantity of the load of functional component increases, because functional component is along with hypsokinesis acts on spring on the position with the contraction in length of another arm of spring, so can reduce 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, can guarantee to have no the inclination sensation of unstable sense in the inclination final stage.
Yet taking one's seat on the seat makes the situation of backrest hypsokinesis, and seated person is at first pedaled the floor with thenar, and consequent power acts on pelvis via leg joint, knee joint and hip joint, along with center of gravity mobile makes the backrest hypsokinesis.
The more than a series of effect of 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, we can say, even it has illustrated the also essence of suitable stability of right and wrong disabled.
Like this, as the Study on Stability of wheelchair, will be called the dynamic equilibrium seat with the technology that is adjusted into target of improving Head and Neck (being designated hereinafter simply as " ABS ") will be set.
Patent documentation 1:(Japan) spy opens flat 07-289383 communique
Summary of the invention
Above-mentioned prior art, the center of gravity of seated person moves when being conceived to hypsokinesis, and the sense of stability of hypsokinesis final stage (maximum angle of hypsokinesis) is provided.If consider with above-mentioned thenar to be the moving of starting point of hypsokinesis action, then the prior art is not removed the burden of the Head and Neck that causes because of hypsokinesis.
That is, in conventional seat, do not form the structure that can make backrest hypsokinesis naturally and understandably by above-mentioned a series of effects, 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 produces will not pedal the floor with thenar the time passes to pelvis well.Therefore, as mentioned above, consider, compare, though removed unstable sense, produce the dorsiflex reflection when existing hypsokinesis, add the problem of bearing to health with conventional seat from the viewpoint that center of gravity moves.
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 implements resulting from crooknecked center of gravity and move.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 the reversed dip, exist the problem that neck bears heavy load yet.
Therefore, the present invention is in view of the focus of described problem, with provide a kind of with the ABS notion be applied to general seat such as office seating, the seat that alleviates the load of the health of Head and Neck etc. in rear-inclined and the reversed dip is 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 portion that is arranged at this bearing top and the upright backrest of being located at the rear of this seat support portion, in order to make this backrest inclination, is provided with tumbler; It is characterized in that: described tumbler, have cursor, the one end is supported on bearing with the rotary way axle, and the other end is fixed in backrest, makes backrest inclination; First elastic device, its rotation with respect to the cursor that makes the backrest rear-inclined has eccentric force along opposite direction; With 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 portion; By adjusting the elastic characteristic of described first elastic device and 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, then according to the ABS notion, by means of the effect of the complementation of first elastic device and second elastic device, increase because the reaction force of the backrest during hypsokinesis is linear, therefore in rear-inclined, along with the increase of reaction force, along with the hypsokinesis angle becomes effect greatly gently; And in reversed dip, from move the initial movable of the Head and Neck of execution prior to center of gravity, according to the track effect identical with rear-inclined.
Described first elastic device can use torsion spring, and it is arranged at described bearing inside, and at the moving chimeric axle that described cursor is arranged of coiling portion, an end fastening is in cursor, and the other end is fixed in the mode that can adjust reaction force along the direction of the rear-inclined of revolting backrest.
In addition, described second elastic device, can use extension spring, it is arranged at described bearing inside, the hook of extension spring one end is fixed on the hook fixed part that is provided with 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, then along with the moving 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 to have the problem that durability is low, cost is high.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 portion can adopt following structure, makes the degree of depth depression of ischial tuberosity portion during promptly described inclination, the Center of Pressure of pelvis on the 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 is expressed as described above is such, the seat that the present invention relates to has following effect, the power that produces by thenar is that the center of gravity of opportunity moves and realizes with pedaling, can alleviate the load of Head and Neck in rear-inclined and the 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 vertical view that seat surface is provided with the seat support portion of slit, (a-2) is the sectional view of (a-1), (b-1) has used the vertical view of the seat support portion of Web materials for seat surface, (b-2) is 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 cooperates inserts in the shank 2, and shank 2 has a plurality of legs that are radial extension from cooperation socket (not shown), 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 the extending and movable rotationally auxiliary section 4 of leg pillar 1.4 the top in the auxiliary section is provided with a frame 7 by bearing 5.This 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 by the convex connecting portion 6 that the top at bearing 5 is provided with seat frame 7.
Be covered with seat support portion 8 on the present frame 7, the upright backrest 9 that is provided with in the rear end of present 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 with rotary way.If seated person applies body weight to backrest 9 and leans to, then cursor 10 rotates along downward direction, and backrest 9 rear-inclineds promptly, are regulated backrest.In addition, the instability when suppressing rear-inclined, the rear portion, side of present frame 7 is provided with fixed axis 11, itself and the setting setting of backrest almost parallel ground; With auxiliary cursor 12, itself and cursor 10 are provided with 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 tilts to rotate for making backrest 9, then auxiliary cursor 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 cursor 12, and promptly cursor 10, fixed axis 11 and auxiliary cursor 12 all are provided with (not shown) in couples.
Bearing 5, inside are provided with the base 51 of each member of the inclination that is used to control the backrest 9 that the present invention relates to.On base, be provided with the turning cylinder 52 of the above-mentioned left-right rotation arm 10 of rotatably support.
Make under the sweptback situation of backrest at cursor 10,, can use torsion spring 53 for applying reaction force with making on the opposite direction of its sweptback direction of motion of this cursor 10.Torsion spring 53, has coiling portion, be placed on the turning cylinder 52 in this coiling portion, this coiling portion has intersects two ends of stretching out on the tangential direction of coiling portion mutually, one of them end fastening is in the fastening portion 101 of installing on the cursor 10, another end is by means of support 56, by 54 extruding of reaction force adjustment part.In addition, be provided with rail portion 55 on the top of reaction force adjustment part 54.
Among 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 be provided with one, also a torsion spring 53 and an extension spring 58 can all be set at the left and right sides of support 56, promptly are provided with a pair of torsion spring 53 and a pair of extension spring 58.
In the present embodiment, used above-mentioned torsion spring 53 and extension spring 58 as elastomeric element, yet be not limited to this, can use other elastomeric element for parts with same function.
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 of torsion spring 53, and 53b is the short end of torsion spring 53.Described with reference to Figure 1, long end 53a and short end 53b intersect mutually on tangential direction from the coiling portion of torsion spring 53 and to extend out.Short end 53b fixes with the state that is pushed by reaction force adjustment part 54 on predetermined adjustment position by support 56.In addition, about extension spring 58, Fig. 1 is illustrated as reference, in the base front portion, 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, then long end 53a is by 101 extruding of fastening portion, and short end 53b has been fixed, and thus, this length end 53a 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 owing 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, in Fig. 3, only be provided with torsion spring 53, in fact, also torsion spring 53 can be set on the right side of support 56 in the left side of support 56.
Reaction force adjusting device 54 by extruding plate 54a be extruded sheet 54b and constitute, forms the inclined plane with same angle of inclination respectively, 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.Be extruded the lower surface that is positioned at the inclined plane opposition side of sheet 54b, contact with the extruding jut 56a of support 56, extruding jut 56a is to contact with mode that the short end 53b of torsion spring 53 intersects.Above-mentioned rail portion 55 is parallel to the length direction setting of the coiling portion that adjusts screw rod 54c and torsion spring 53.
Adjust screw rod 54c along loosening direction or tightening up the direction rotation if make, then extruding plate 54a moves along rail portion 55.If extruding plate 54a moves, then produce to slide in the inclined plane of extruding plate 54a and the inclined plane that is extruded sheet 54b, and the inclination along with the inclined plane of extruding plate 54a is extruded sheet 54b and moves up and down in the mode that is extruded into below or return-to-home position.
Move up and down along with being extruded the above-mentioned of sheet 54b, by extruding jut 56a, short end 53b is reversed, and the position of the fulcrum angle of torsion spring 53 changes, thereby torsion spring 53 produces reaction force, makes that the above-mentioned eccentric force that derives from torsion spring 53 obtains adjusting.Adopt this structure, can adjust best reaction force by the backrest 9 of the body weight difference of seated person decision.
In addition, in this example, manually adjust the structure of screw rod 54c though 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 carry out the known configurations that best reaction force is adjusted automatically.
Fig. 4 is the schematic diagram of the embodiment of expression seat support portion 8.In the embodiment shown in Fig. 4 (a-1),, be provided with a plurality of elongated slit 81a that extends along perpendicular to above-mentioned depth direction at certain intervals towards the depth direction of the seat surface of the 8a of seat support portion.Among these slits 81a, present in face of on the most forward slit 81a of side (left side of figure), be a plurality of broach shapes along direction and be formed with short otch 82a perpendicular to slit 81a.
Fig. 4 (a-2) is the sectional view of the 8a of seat support portion shown in Fig. 4 (a-1).Deflection deformation f when the curve that the two chain line of usefulness are represented on the 8a of seat support portion 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 portion that is not provided with slit 81a, can make the degree of depth depression of ischial tuberosity portion, 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 front portion, 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 8b of seat support portion, uses the embodiment of Web materials 82b as seat frame 81b internal material.The side sectional view of Fig. 4 (b-2) shows deflection deformation f, and have and the identical effect of effect that is provided with the slit shown in Fig. 4 (a-1), (a-2), but be to use the seat surface of Web materials 82b, the body weight pressure in the time of can more correspondingly taking one's seat distributes and action.
In addition, though 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 thorax lentamente in the wings, 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 the reaction force) when illustrating backrest inclination, uses the situation and the situation that is used in combination torsion spring and extension spring of torsion spring more separately with this figure.
With the curve that the solid line of Fig. 5 is represented, the variation when illustrating the inclination of combination of torsion spring and extension spring; With the curve that the dotted line of Fig. 5 is represented, 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 the reaction force of the two is less.
On the other hand, the situation of the torsion spring monomer of representing with dotted line b1, dotted line b2 is about the position about 5 ° from the angle of inclination of backrest, 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 bigger.
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 big and the reaction force increase, thus can little by little suppress hypsokinesis speed, thus realize gentle hypsokinesis action; In reversed dip, can realize switching smoothly, just like the sort of dynamic reproduction ground effect of rocking chair by rear-inclined.Therefore, can think that the combination of torsion spring and extension spring has the effect that the load of the health of Head and Neck when making etc. alleviates.
Description of reference numerals
1 leg pillar
2 shanks
3 castors
4 auxiliary sections
5 bearings
6 connecting portions
7 frames
8 seat support portions
9 backrests
10 cursors
Claims (5)
1. a seat has the bearing on the top of being fixed in the leg pillar, the seat support portion that is arranged at this bearing top and the upright backrest of being located at this seat support portion rear, in order to make this backrest inclination, is provided with tumbler; It is characterized in that:
Described tumbler has cursor, and the one end is supported on the described bearing with rotary way, and the other end is fixed in described backrest, makes backrest inclination; First elastic device, its rotation with respect to the cursor that makes the backrest rear-inclined has eccentric force along opposite direction; With 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 portion;
By adjusting the elastic characteristic of first elastic device and 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 is characterized in that: described first elastic device is a torsion spring, and it is arranged at described bearing inside, and the coiling portion of described torsion spring is placed on the axle of described cursor; One end fastening of described torque 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 second elastic device is extension spring, it is arranged at described bearing inside, the hook of extension spring one end is fixed on the hook fixed part that is provided with in the front portion of the base of described bearing, the hook of the other end is fixed on the linkage portion with the mode hook of the eccentric force that can produce described draw direction, this linkage portion be installed in that described axle is gone up and with the rotation interlock of cursor.
4. as each described seat in the claim 1～3, it is characterized in that: the seat surface of described seat support portion adopts following structure, when described inclination, the Center of Pressure of pelvis on the seat surface is moved in the wide region of front and back, can support the mode of ischial tuberosity front part, make the degree of depth depression of ischial tuberosity portion.
5. as each described seat in the claim 1～4, 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 true CN102056512A (en) | 2011-05-11 |
| CN102056512B 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) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103799741A (en) * | 2012-11-01 | 2014-05-21 | 奥弗·巴查 | Seat back, seating apparatus and method |
| CN104023592A (en) * | 2011-10-04 | 2014-09-03 | 佛姆维家具有限公司 | Chair and supports |
| CN109640745A (en) * | 2016-07-08 | 2019-04-16 | 高飞模工业有限责任公司 | Leaning device for chair |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202012002288U1 (en) * | 2012-03-08 | 2012-05-11 | Walter Knoll Ag & Co. Kg | functional chair |
| TWI808904B (en) * | 2022-10-04 | 2023-07-11 | 宣禹實業股份有限公司 | Seat back linkage device for chair |
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| CN1074361A (en) * | 1991-10-31 | 1993-07-21 | 罗尔夫·福尔克尔 | Stuhl, insbesondere burodrehstuhl |
| JPH07289383A (en) * | 1994-04-27 | 1995-11-07 | Tokai Kinzoku Kogyo Kk | Reclining device for chair |
| JPH08289825A (en) * | 1995-04-25 | 1996-11-05 | Uchida Yoko Co Ltd | Back part tilting device for chair |
| JP2002142899A (en) * | 2000-11-06 | 2002-05-21 | Okamura Corp | Operation lever structure for chair |
| US6394546B1 (en) * | 1997-10-24 | 2002-05-28 | Steelcase Development Corporation | Lumbar device |
| WO2002058514A1 (en) * | 2001-01-06 | 2002-08-01 | Unit Press Limited | Chairs |
| 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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|---|---|---|---|---|
| US4796950A (en) * | 1987-02-09 | 1989-01-10 | Haworth, Inc. | Tilt mechanism, particularly for knee-tilt chair |
| 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 |
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2009
- 2009-06-05 TW TW098118830A patent/TW201016170A/en unknown
- 2009-06-05 WO PCT/JP2009/002563 patent/WO2009147869A1/en active Application Filing
- 2009-06-05 CN CN2009801208517A patent/CN102056512B/en not_active Expired - Fee Related
- 2009-06-05 JP JP2010515787A patent/JP5598855B2/en active Active
- 2009-06-05 KR KR1020117000245A patent/KR20110022040A/en not_active Application Discontinuation
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03121013A (en) * | 1989-09-16 | 1991-05-23 | Rolf Voelkle | Chair with reclining-seat part |
| 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 |
| JPH07289383A (en) * | 1994-04-27 | 1995-11-07 | Tokai Kinzoku Kogyo Kk | Reclining device for chair |
| JPH08289825A (en) * | 1995-04-25 | 1996-11-05 | Uchida Yoko Co Ltd | Back part tilting device for chair |
| US6394546B1 (en) * | 1997-10-24 | 2002-05-28 | Steelcase Development Corporation | Lumbar device |
| JP2002142899A (en) * | 2000-11-06 | 2002-05-21 | Okamura Corp | Operation lever structure for chair |
| WO2002058514A1 (en) * | 2001-01-06 | 2002-08-01 | Unit Press Limited | Chairs |
| 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 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104023592A (en) * | 2011-10-04 | 2014-09-03 | 佛姆维家具有限公司 | Chair and supports |
| CN104023592B (en) * | 2011-10-04 | 2017-04-05 | 佛姆维家具有限公司 | Seat and support member |
| US9687077B2 (en) | 2011-10-04 | 2017-06-27 | Formway Furniture Limited | Chair and supports |
| US9901176B2 (en) | 2011-10-04 | 2018-02-27 | Formway Furniture Limited | Chair and supports |
| CN103799741A (en) * | 2012-11-01 | 2014-05-21 | 奥弗·巴查 | Seat back, seating apparatus and method |
| CN109640745A (en) * | 2016-07-08 | 2019-04-16 | 高飞模工业有限责任公司 | Leaning device for chair |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2009147869A1 (en) | 2011-10-27 |
| KR20110022040A (en) | 2011-03-04 |
| WO2009147869A1 (en) | 2009-12-10 |
| CN102056512B (en) | 2013-06-12 |
| TW201016170A (en) | 2010-05-01 |
| JP5598855B2 (en) | 2014-10-01 |
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