CN102525158A - Chair - Google Patents
Chair Download PDFInfo
- Publication number
- CN102525158A CN102525158A CN2011104435776A CN201110443577A CN102525158A CN 102525158 A CN102525158 A CN 102525158A CN 2011104435776 A CN2011104435776 A CN 2011104435776A CN 201110443577 A CN201110443577 A CN 201110443577A CN 102525158 A CN102525158 A CN 102525158A
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- CN
- China
- Prior art keywords
- base frame
- chair base
- chair
- stop dog
- dog component
- Prior art date
- Legal status (The legal status 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 status listed.)
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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
- A47C1/03205—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination
- A47C1/03238—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination by means of peg-and-notch or pawl-and-ratchet mechanism
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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
- A47C1/03294—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest slidingly movable in the base frame, e.g. by rollers
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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
- A47C3/20—Chairs or stools with vertically-adjustable seats
- A47C3/30—Chairs or stools with vertically-adjustable seats with vertically-acting fluid cylinder
Abstract
An object of this invention is to provide a chair comprising a simple and compact rocking mechanism and lock mechanism to lock the rocking movement. The chair comprises a support frame 4 supported by a support rod 12, a back frame 5 that can make an inclining movement, a seat frame 6 that make a movement in conjunction with the back frame 5 toward a direction along the inclining movement of the back frame 5, a reactive force mechanism 7 that accumulates a spring force against an interlocking movement, and a lock mechanism 8 that locks the interlocking movement, wherein the reactive force mechanism 7 comprises a spring case 71 and a spring 72 that can make a relative movement in the back and forth direction, and has such an arrangement that the spring case 71 moves in accordance with the interlocking movement while inclining together with the seat frame 6 with a movement of a part of a front end part and a rear end part of the spring case 71 limited by the seat frame 6 during the interlocking movement, and the lock mechanism 8 locks the interlocking movement of the seat frame 6 and the back frame 5 with the support frame 4 by fixing a relative position of the spring case 71 and the seat frame 6.
Description
Technical field
The present invention relates to have the seat surface rear side down maneuver and backrest hypsokinesis action interlock so-called synchronous interlocking mechanism (synchro locking) and with the chair of these actions in locking (lock) mechanism of desirable fixed-site.
Background technology
About having the chair of such mechanism, propose to have all kinds.For example in patent documentation 1 as the structure that realizes synchronous interlocking mechanism, show the seat support for main frame, the binding structure of backrest, and proposed the supporting construction of the counter-force mechanism that counter-force increases and decreases according to the flip angle of backrest.In addition, as the structure of the locking mechanism of realizing interlocking (locking) action, the structure that the switching of the valve through gas spring locks and removes has been shown in patent documentation 2.In patent documentation 3, illustrated for the member mobile along with the hypsokinesis of backrest; Lock through making it and limiting its member butt that moves; Show member at patent documentation 4, lock through making itself and the member butt that has with its meshed gears face for face of gear with or rotation mobile along with the hypsokinesis of backrest.
Patent documentation 1: No. 6796611 communique of United States Patent (USP)
Patent documentation 2: the special fair 2-24527 communique of Japan
Patent documentation 3: TOHKEMY 2001-128774 communique
Patent documentation 4: TOHKEMY 2003-189967 communique
Summary of the invention
But, in the prior art shown in the above-mentioned patent documentation 1, be used to realize the complex structure of synchronous interlocking mechanism, and the position that the locking mechanism of restriction interlocking action can be set is restricted.
If based on the locking mechanism of such structure and then increase patent documentation 2～4 that kind, then structure becomes increasingly complex, it is many that the parts number of packages becomes, and is difficult to seek miniaturization, subdues cost, and be easy to generate the bad such problem of action.And, also there is following situation: the operability variation, can not carry out the locking of interlocking position rapidly, even or after locking, also can produce and problem such as depart from interlocking position.
The present invention makes in view of above-mentioned problem, its purpose be to provide a kind of have the parts number of packages few, form simple structure, the chair of the locking mechanism of the synchronous interlocking mechanism that miniaturization and action stability are high, cheapness and operability are good.
The present invention has following means in order to reach this purpose.
Promptly; Chair of the present invention; Comprise: the scaffold that is supported on pillar; Can be with respect to the back frame of this scaffold rise and fall; With the chair base frame that is associated with said scaffold and said back frame with mode that said back frame interlock ground moves in the direction along the rise and fall of back frame; The savings competing phase is for the counter-force mechanism of the spring force of the interlock action of the said chair base frame of said scaffold and said back frame; Constraint is with respect to the locking mechanism of the interlock action of the said chair base frame of said scaffold and said back frame; It is characterized in that said counter-force mechanism comprises spring housing of being located in the said chair base frame and the spring that is associated with this spring housing and chair base frame, said spring housing is applied in and is associated to: in said interlock action; Carry out on one side the interlock action of tilting on one side to relatively move at fore-and-aft direction with respect to this chair base frame with this chair base frame under by the state of said chair base frame local restriction in leading section and rearward end, the relative position of said locking mechanism through fixing said spring housing and the fore-and-aft direction of said chair base frame retrains with respect to the said chair base frame of said scaffold and the interlock of said back frame and moves.
Through such formation; Can realize synchronous interlocking mechanism with simple structure; And because the member that should be limited the position is only by the chair base frame of partial restriction relative motion and spring housing; So fixedly the locking mechanism of interlocking position is also few for the restriction that the place is set, can realize with structure simple and that the parts number of packages is few.Therefore, when realizing miniaturization, can seek cost cutting, improve action stability.And because chair base frame and spring housing always keep the state that is close, so the operability of their fixed-site also is improved, and also can reduce the offset after fixing.
In order further to improve operability, can to fix reliably with not producing offset at interlocking position; Preferably said spring housing is in leading section and rearward end; Restrained with respect to said chair base frame relatively moving on above-below direction; Be more preferably in leading section and rearward end, be located in the said chair base frame and restrained with respect to this chair base frame relatively moving on left and right directions.
In addition; In order further to improve above-mentioned effect; Preferably said locking mechanism by constitute with the direction of fore-and-aft direction quadrature on stop dog component free to advance or retreat, the driving and reversing mechanism of these stop dog component advance and retreat, the connecting hole that supplies said stop dog component to insert are constituted; Arbitrary side in said chair base frame and said spring housing is provided with said stop dog component and said driving and reversing mechanism, the opposing party said connecting hole is set.
And; In order further to advance miniaturization; Preferably, said spring housing, said stop dog component and said driving and reversing mechanism are limited to respectively in the height dimension of chair base frame, are more preferably; The part that said connecting hole is set is tabular, and said stop dog component is limited in the height dimension scope of chair base frame in the advance and retreat travel range.
In addition; For can be trickle the latched position of change interlocking; Further improve and after locking, do not produce this basic function of offset, preferably, said connecting hole is along the slit of extending with the direction of fore-and-aft direction quadrature; On fore-and-aft direction, be provided with a plurality of with preset space length; And that said stop dog component constitutes is tabular, has the protuberance with said connecting hole tabling in its part, on one side the inner face guiding of being taken in the backstop housing of this stop dog component of a face of said stop dog component carry out the advance and retreat of said stop dog component on one side.
And; In order to alleviate load, improve action stability, preferably to said stop dog component; Said backstop housing is fixed in said chair base frame; Said connecting hole is located at said spring housing, and at chair base frame the auxiliary connecting hole that the protuberance of said stop dog component can closely be advanced and retreat is set, the protuberance of said stop dog component inserts in the position that said connecting hole and said auxiliary connecting hole coincide simultaneously.
And; In order to make more small-sized structure; Preferably; Said driving and reversing mechanism is made up of the action bars of the advance and retreat of the backstop housing of taking in said stop dog component, the said stop dog component of operation, the spring member that utilizes the displacement of said action bars to give the power that makes its advance and retreat to said stop dog component, and said spring member is configured to removing position and latched position switching application of force direction.
According to the present invention of above explanation, have synchronous interlocking mechanism and limit the locking mechanism of its action, can guarantee after locking can not squint this basic function and improved operability of its position.And can be enough simple structure realizes locking mechanism, therefore can realize miniaturization, and can reduce manufacturing cost through reducing the parts number of packages, improves action stability.
Description of drawings
Fig. 1 is the side view of the chair of an embodiment of the present invention.
Fig. 2 is the exploded perspective view of this chair.
Fig. 3 be between the framework of this chair of explanation linkage want portion's stereogram.
Fig. 4 is the stereogram that constitutes the scaffold of this chair.
Fig. 5 is the center line vertical section stereogram that constitutes the chair base frame of this chair.
Fig. 6 is the counter-force mechanism of this chair and the exploded perspective view of locking mechanism.
Fig. 7 is the sectional stereogram of the counter-force mechanism of this chair.
Fig. 8 be this chair the back frame hypsokinesis time the sectional stereogram of counter-force mechanism.
The cutaway view of the action of the counter-force mechanism of Fig. 9 when to be explanation with the chair base frame of this chair and counter-force mechanism be sticked in scaffold and back frame.
Figure 10 be this chair of expression stop mechanism assembled state want portion's stereogram.
Figure 11 be this chair of expression stop mechanism decomposing state want portion's stereogram.
Figure 12 is the cutaway view that the position of movable platen of stop dog component and backstop housing, spring housing, the chair base frame of this chair of expression concerns.
Figure 13 be this chair of explanation lock-stop actuating mechanism want portion's cutaway view.
Figure 14 be this chair of explanation seat surface height adjustment mechanism want portion's stereogram.
Figure 15 be this chair of explanation seat surface height adjustment mechanism assemble method want portion's cutaway view.
Figure 16 be the scaffold of this chair assembled the gas spring bar state want portion's stereogram.
Figure 17 be before the scaffold of this chair assembling gas spring bar state want portion's stereogram.
Figure 18 be this chair of explanation counter-force adjusting portion action want portion's stereogram.
Figure 19 be this chair of explanation each holding section bearing region want portion's cutaway view.
Figure 20 is that bearing components and the sliding eye of this chair of expression wanted portion's stereogram for the fastening state of preceding transverse axis.
Figure 21 wants portion's cutaway view when having operated the gas spring bar of this chair.
Figure 22 is the sketch map that the insertion of the gas spring bar of this chair of explanation breaks away from angle.
Description of reference numerals
4... scaffold
5... back frame
6... chair base frame
7... counter-force mechanism
8... locking mechanism
71... spring housing
72... compression helical spring
73... fluid spring seat
81... backstop housing
82... stop dog component
83... torsion-coil spring
84... action bars
85... driving and reversing mechanism
714... movable board
715... connecting hole
821... protuberance
The specific embodiment
Below, with reference to description of drawings embodiment of the present invention.
As depicted in figs. 1 and 2; The chair of this embodiment is the rotating chair that chair main body 3 is rotatably installed in supporting leg (pin pen feather) 11 via pillar 12; Comprise the scaffold 4 and back frame 5 and chair base frame 6 that are supported on pillar 12; As shown in Figure 3, constitute linkage through fastening separately.
At this, in the present invention, be the rear with the direction of mind-set backrest 31 from chair, its rightabout is the place ahead.That is, the left among Fig. 1 is the place ahead, and right-hand is the rear.And, vertical direction is called above-below direction or vertical, and will be called horizontal or left and right directions with the direction of fore-and-aft direction and above-below direction quadrature.
As shown in Figure 4; Scaffold 4 uses raw material such as aluminum die cast, resin and integrally formed; Main frame 41 with the boat-shaped of the sidewall about comprising 411, rear wall 412, antetheca 413 and diapire 414 is the main body, this main frame 41 be formed with at least as propeller boss (boss) hole 42 that is used for the installing hole of mounting column 12, with about sidewall 411, the cross rib 415 that links between 411 and with antetheca 413, rear wall 412 and cross rib 413 between link or be used for said propeller boss hole 42 is supported on vertical rib 416, the diagonal rib 417 of main frame 41.In addition, nearby be provided with the gas spring bar installation portion 43 of installing hole 431 with gas spring bar of stating after being used to install on the top in propeller boss hole 42.And, be formed with the preceding transverse axis 44 that links outstanding to the left and right jut integratedly on the top of the antetheca 413 of main frame 41.Preceding transverse axis 44 functionally is divided into 3 zones; Be set at holding section 441 from the outstanding to the left and right zone of main frame 41 as second transverse axis that makes chair base frame 6 engagings; The zones that are formed in the main frame 41 are set at the holding section 442 as the 4th transverse axis of the spring housing engaging of stating after making, these holding sections be positioned at coaxial on.In addition, the sidewall about main frame 41 411 is distinguished the integrally formed conduct rear cross shaft 45 of the first outstanding transverse axis to the left and right.
As shown in Figure 2; Back frame 5 is to use raw materials such as aluminum die cast, resin integrally formed; Constitute be used as the 3rd transverse axis jut promptly in the middle of transverse axis 52 link the structure of the pars intermedia of pair of right and left frame parts 51, be formed with in the bottom with cylinder cut shape that a part forms to open front recess 53.Being formed with in the direction different with bearing of trend at frame parts 51 is the protrusion 511 that erects the mild peak shape that direction extends of back frame 5, said in the middle of transverse axis 52 be configured in about the inner face of protrusion 511 between the position that links.
Like Fig. 5 and shown in Figure 6; Chair base frame 6 is to use resin raw material integrally formed; Constitute the shape that will link along the pair of right and left main frame 61 that fore-and-aft direction is formed extended at both sides with antetheca 611 and diapire 616, this main frame 61 constitutes the shape that will form tabular madial wall 612 and lateral wall 613 bindings with cross rib 614.And, at chair base frame 6, upside be provided be used in the blank part 65 of the spring housing stated of postpone, its rear is made as openend 69, and, be provided with loam cake 615 in the position of the place ahead that strides across madial wall 612 and antetheca 611.And diapire 616, madial wall 612 finish near reaching under the loam cake 615, below loam cake 615, are formed with to link with space 63, and at madial wall 612, side-looking is that the rotational slide hole 62 of slotted hole shape is cut a part of state opening downwards with quilt.
In addition; The chair base frame 6 of this embodiment has the blank part 65 of top opening as stated; But may not form the shape with the top opening of this blank part 65, also can make the shape with the top sealing of blank part 65, can also be the shape with lower opening.
In addition, the madial wall 612 of chair base frame 6 and lateral wall 613 extend to than diapire 616 and lean on the rear, below its extension, be formed with cylinder cut shape that a part forms under shed recess 64.This is made as inside along the bearing surface of part barrel surface under shed recess 64, and openend is towards oblique front lower place.
Then; Like Fig. 4, Fig. 5 and shown in Figure 7; Insert the antetheca 413 of scaffold 4 with space 63 in the binding of chair base frame 6; The rotational slide hole 62 that near be provided with the both ends of preceding transverse axis 44 at an upper portion thereof chair base frame holding section 441 and madial wall 612 about chair base frame 6 are provided with engage, thus preceding transverse axis 44 and 62 formation rotational slide holding sections 91, rotational slide hole.And; As shown in Figure 3; But what make back frame 5 is sticked in the rear cross shaft 45 of scaffold 4 to open front recess 53 with the mode of rise and fall; And make chair base frame 6 be sticked in the middle transverse axis 52 of back frame 5 under shed recess 64; The holding section 93 of the holding section 92 of pie graph 3, Fig. 7 and shown in Figure 8, back frame 5 and scaffold 4 and chair base frame 6 and back frame 5 thus, realize on one side chair base frame 6 with the hypsokinesis action interlock of said back frame 5 on one side the rear portion sink to rearward move and with the erecting the action interlock of back frame 5 on one side the rear portion lift forwards mobile synchronous interlocking and move.
In addition, in order to put aside said chair base frame 6 of antagonism and said back frame 5 spring force, constitute counter-force mechanism 7 with respect to the interlock action of said scaffold 4.
Like Fig. 6, Fig. 7 and shown in Figure 8; This counter-force mechanism 7 constitutes: the spring housing 71 under shed constituting spring-loaded of the present invention portion is taken in spring 72 and fluid spring seat 73; Said spring housing 71 is engaged with the preceding transverse axis 44 of said scaffold 4; Along with the hypsokinesis of back frame 5, chair base frame 6 with respect to spring housing 71 relative sliding actions, make 73 displacements of fluid spring seat thus and cause the compression of spring 72.
This spring housing 71 details like the back, and leading section engages with scaffold 4, and is limited at above-below direction and left and right directions by chair base frame 6, and the locking mechanism 8 through stating after constituting, and rearward end is also limited at above-below direction and left and right directions by chair base frame 6.Its result, spring housing 71 can move at above-below direction with chair base frame 6 integratedly, only carries out relatively moving of fore-and-aft direction.
Below, its concrete structure is described.
As 6 and shown in Figure 7; Spring housing 71 uses steel raw material etc.; Form comprise upper wall 711, about sidewall 712 and rear wall 713 and rectangular-shaped under shed, from as the bottom of the rear wall 713 of extension further to extending movable board 714 as the rearward end of spring housing 71 with the rear of these rear wall 713 quadratures.And; In spring housing 71; Bearing components 74 are installed by the basic point portion 716 that is made up of recess for setting in the front of upper wall 711; Will be from basic point displacement rearward as the central part of the said rear wall 713 of extension nearby as benchmark spring base 75, said bearing components 74 has the protuberance 741 corresponding with this basic point portion 716 and is formed under shed recess 742 by the part barrel surface that becomes bearing surface.Be provided with through hole 751 at this benchmark spring base 75.
This spring housing 71 engages with scaffold 4 via bearing components 74 in the basic point portion 716 of leading section, and disposes the loam cake 615 of chair base frame 6 on the top of upper wall 711, thereby is limited moving to the top.In addition, near leading section, about sidewall 712 limited relatively moving of direction to the left and right by the madial wall 612 of chair base frame 6.At this, as stated, owing to preceding transverse axis 44 engagings of rotational slide hole of chair base frame 6 62 and scaffold 4 constitute rotational slide holding section 91, so chair base frame 6 is supported framework 4 at this position and retrains at above-below direction.Therefore, the leading section of spring housing 71 is sandwiched between the preceding transverse axis 44 of loam cake 615 and scaffold 4 of chair base frame, and is restricted at above-below direction.So, the leading section of spring housing with respect to chair base frame 6 forwards, backwards beyond the direction relatively move restricted.
And, as the movable board 714 of the rearward end of spring housing 71, with chair base frame 6 constitute as the back detailed description locking mechanism, restricted with respect to chair base frame 6 thus to reaching relatively moving of left and right directions up and down.As a result, spring housing 71 can whole only carry out relatively moving of fore-and-aft direction with respect to chair base frame 6.
This spring housing 71 can insert from the openend 69 at the rear of the blank part 65 that is positioned at said chair base frame 6 and break away from; With chair base frame 6 roughly the same height, between the madial wall about chair base frame 6 612, take in the left and right sides sidewall 712 of this spring housing 71 under the state in the blank part that is accommodated in said chair base frame 6 65.Preceding transverse axis 44 ground that bearing components 74 that kind also shown in figure 20 is suspended to scaffold 4 engage with it and rotatably constitute holding section 94; Relative therewith; Chair base frame 6 slides mobile as above-mentioned forwards, backwards in rotational slide holding section 91, therefore produce chair base frame 6 relatively moving with respect to spring housing 71.Spring housing 71 compresses spring 72 on one side, and on one side from process towards use location Fig. 9 (c) shown in the rotation of the assembling position shown in Fig. 9 (a) through Fig. 9 (b), so the spring counter-force is to making spring housing 71 return the directive effect of assembling position.In addition, spring housing 71 is limited relatively moving with respect to chair base frame in the direction except that fore-and-aft direction.As this limiting means, for example as shown in Figure 5, be provided for making first, second sliding guidance portion 66,67 of the two smooth and easy slip in the part with said chair base frame 6 butts of said spring housing 71.
The first sliding guidance portion 66 is the top edges that are arranged on the madial wall 612 of said chair base frame 6 integratedly; And the teat that extends abreast with the diapire 616 of this chair base frame 6; This teat is with the mode bending of mild protrusion downwards; As shown in Figure 7, when having assembled spring housing 71, contiguously this spring housing 71 is being pushed downwards with laterally reaching the standard grade of fore-and-aft direction quadrature with the top of spring housing 71.As shown in Figure 5; The second sliding guidance portion 67 is arranged on the madial wall 612 of chair base frame about 6 and the teat that extends longitudinally integratedly; This teat is with the mode bending of mild protrusion to the inside; As shown in Figure 6, contact, prevent spring housing 71 direction vibration to the left and right with sidewall 712 about spring housing 71 reaching the standard grade with the above-below direction of fore-and-aft direction quadrature.Consider that from the reference position setting of spring housing 71, the easy property of the making aspect of chair base frame 6 in this embodiment, these first sliding guidance portions 66 are arranged on position identical on the fore-and-aft direction with the second sliding guidance portion 67.
In addition, as shown in Figure 5, at the rear of chair base frame 6, on fore-and-aft direction, the 3rd sliding guidance portion 68 is set complementaryly with the first sliding guidance portion 66 different positions.The 3rd sliding guidance portion 68 is that the curved shape with mild protrusion is wholely set the protuberance in the inboard of the diapire 616 of chair base frame 6; Be arranged on the position of sliding on can be below the movable board 714 of spring housing 71 of assembling as Fig. 6 and Fig. 7, can contact at x wire with the following of movable board 714 of spring housing 71 with the fore-and-aft direction quadrature.Through such formation, except the 3rd sliding guidance portion 68, do not need extra high precision at diapire 616, the processing of chair base frame 6 is easier.
As shown in Figure 5, these first, second, third sliding guidance portions 66,67,68 only are provided with at a place along fore-and-aft direction respectively.
Like Fig. 6 and shown in Figure 7, the spring 72 of counter-force mechanism 7 is spiral compression helical springs.
Fluid spring seat 73 is the members that extend spring base cantilever arm 731 from spring bearing surface 733 one; This spring base cantilever arm 731 is configured to its top 734 and passes the state of the through hole 751 of said benchmark spring base 75 through the inside of spring 72, and this fluid spring seat 73 is relative with benchmark spring base 75.Spring bearing surface 733 is parts of the displacement transmission member 732 of channel shape, and this displacement transmission member 732 plays the effect that the slide displacement of the chair base frame 6 that produces along with the hypsokinesis of back frame 5 is passed to spring 72 via counter-force adjusting portion 76.Shown in figure 18; Counter-force adjusting portion 76 makes the inclined-plane 767,768 (face-to-face) against each other of regulated quantity input link 761 and regulated quantity output link 762; The left and right directions of regulated quantity input link 761 mobile converted into the moving of fore-and-aft direction of regulated quantity output link 762; With the position of displacement transmission member 732 is direction or its rightabout that spring shown in Figure 7 72 compressions are changed in the position of spring bearing surface 733; Fig. 6 and regulated quantity input link 761 shown in Figure 180 as Fig. 5 and shown in Figure 7, make a part with can with the direction of fore-and-aft direction quadrature on follow moving forward and backward of chair base frame 6 under the mode of sliding and the state that the rising portions 617 of the diapire of being located at chair base frame 6 616 engages and move at fore-and-aft direction.And; Like Figure 18 (a) and (b); Counter-force adjusting rod 764 is engaged with the screwed hole of being located at this regulated quantity input link 761 763 screw threads, and the handle part 765 through the outer end that operates in this counter-force adjusting rod 764 is provided with can make said regulated quantity input link 761 screwfeeds.In addition, like Fig. 3 and shown in Figure 6, the part of counter-force adjusting rod 764 is rotatably installed in the appropriate location of chair base frame 6, and makes the flange part of being located on 764 of this counter-force adjusting rods 766 in a part that axially is not sticked in chair base frame 6 movably.Counter-force adjusting rod 764 moves up in front and back with chair base frame 6 integratedly, and therefore the relative position with seated person keeps constant.
At this, use Fig. 9 that the assembling sequence of scaffold 4, chair base frame 6, back frame 5 and spring housing 71 is described.
Shown in Fig. 9 (a); The shape that the bearing components 74 of spring housing 71 utilizes under shed recess 742; Can load and unload from the direction that the preceding transverse axis 44 with scaffold 4 intersects to be partial to the assembling angle that erects side than use angle at least; Equally, also take under the state of the counter-force mechanism 7 that comprises spring housing 71 in the inside of chair base frame 6 in the rotational slide hole 62 of chair base frame 6, can load and unload from the direction that the preceding transverse axis 44 with scaffold 4 intersects via opening with said assembling angle.Therefore, when assembling, at first in the counter-force mechanism 7 that will comprise spring housing 71 packed chair base frame 6 into, spring housing 71 and chair base frame 6 can be sticked in the preceding transverse axis 44 of scaffold 4 simultaneously with predetermined assembling angle on this basis.
Then, shown in Fig. 9 (b), Fig. 9 (c), under state with chair base frame 6 transverse axis 44 before spring housing 71 is sticked in, can from the assembling angle to use angle chair base frame 6 is rotated with counter-force mechanism 7 integratedly.At this moment, be provided with along with said spring housing 71 from the assembling angle to moving of use angle and to the cam surface 46 of spring compression direction at said scaffold 4 fluid spring seat 73 application of forces.This cam surface 46 transverse axis 44 before said extends to the back lower place along tangential direction roughly, changes via arc sections to be oriented downwards, slides on the front of the rising portions 617 that is provided with in the place ahead of the diapire 616 of chair base frame as shown in Figure 56.Thus, as shown 9 (a), (b) and (c), the spring housing 71 of the bearing member 74 is rotated past the horizontal axis 44, and the front side of the seat frame 6 in the rotation sliding horizontal 44 hole 62 of swimming (swimming, floating) while the backward sliding movement, the reaction force during the initial savings.As shown in Figure 4, cam surface 46 also play be used to strengthen said before the effect of rib of transverse axis 44.
And; Like Fig. 9 (a) and (b) and (c); What make back frame 5 is sticked in the rear cross shaft 45 of scaffold 4 to open front recess 53 from orthogonal direction; With being suspended to the middle transverse axis 52 of this back frame 5 and making it chimeric of chair base frame 6 under shed recess 64, thus between said scaffold 4 and said back frame 5, between said scaffold 4 and the said chair base frame 6, said chair base frame 6 and said back frame 5 and said scaffold 4 be accommodated in chair base frame in spring housing 71 between constitute fitting portion (holding section) 92,91,93,94 as shown in Figure 7, that can engage disengaging respectively.These holding sections 91,94,93,92 are respectively by Figure 19 (a) and (b), (c), the axle of (d) that kind and constituting of recess; Roughly sliding respectively by the position 951,961,952,962,953,963,954,964 shown in this figure bend; Therefore these positions are implemented to handle to become level and smooth (smooth) surface as bearing region.
The initial counter-force of the spring 72 under state shown in Fig. 7 and Fig. 9 (c) acts as drawing to the direction of the preceding transverse axis 44 of scaffold 4 to the middle transverse axis 52 of under shed recess 64 with back frame 5 via chair base frame 6; Therefore respectively to the direction that makes chair base frame 6 and the chimeric reinforcement of back frame 5 and make the pressing on the rear cross shaft 45 of scaffold 4 and make the directive effect of back frame 5 and the chimeric reinforcement of scaffold 4 of back frame 5 to open front recess 53; And, the chimeric also reinforcement between the bearing components 74 that is assembled in the spring housing 71 in the chair base frame 6 and the preceding transverse axis 44 of scaffold 4.As a result, these fitting portions utilize the initial counter-force of said counter-force mechanism 7 and keep chimeric state each other.In addition; As from Fig. 7 to shown in Figure 8; Interlock action along with said back frame 5 and said chair base frame 6; Produce to surpass the counter-force of the initial counter-force of said counter-force mechanism 7, strengthened to deepening chimeric, the back frame 5 and the chimeric and scaffold 4 of scaffold 4 and the power of the chimeric directive effect of chair base frame 6 of chair base frame 6 respectively with back frame 5.
Especially like Fig. 7, Fig. 8 and shown in Figure 19; At backrest Zi erecting the position during interlock the reclined position; Bearing components 74 slides at the predetermined bearing region 952 of this preceding transverse axis 44 with the state of the central portion spring housing holding section 442 nearby of transverse axis 44 before being suspended to, and near the predetermined bearing region 951 of the chair base frame holding section 441 of the rotation connecting hole 618 of chair base frame 6 both ends of preceding transverse axis 44 slides.And; Have position shown in Figure 9 relation back frame 5 to the state of open front recess 53 with the rear cross shaft 45 that is embedded in scaffold 4; The bearing region 954 of the especially inlay resultant force effect in this rear cross shaft 45 slides, chair base frame 6 under shed recess 64 with bearing region 953 slips of the state of middle the transverse axis 52 that is embedded in back frame 5 at the face of the especially inlay resultant force effect in this centre transverse axis 52.Therefore; At least the bearing region of these transverse axis 44,45,52 constitute illustrated as an example among Fig. 4, make level and smooth convex sliding surface for the transversal line m that is parallel to each other of the axis of the left and right directions at the center through each transverse axis 44,45,52; And each opening recess 742,618,53,64 likewise constitutes the level and smooth concavity sliding surface around the transversal line m that is parallel to each other.Rotational slide hole 62 is also according to such formation.
Especially like Fig. 4 and shown in Figure 2; Rear cross shaft 45 as the jut of scaffold 4 is provided with circumferential groove 451 in the part of outer peripheral face; Bottom land as this circumferential groove 451 of the periphery of jut along the circumferential direction is provided with the scarce portion 452 of cutting as special-shaped portion, and this outer peripheral face that lacks beyond the portion of cutting 452 becomes the convex sliding surface 453 that is interrupted.Being provided with integratedly when engaging, reach the cover portion 54 of the outstanding end face 454 of this rear cross shaft 45 with the rear cross shaft 45 of the jut of the said scaffold 4 of conduct shown in Figure 4 with the side to open front recess 53 of its chimeric said back frame 5.In addition, lack and cut portion 452, then can further reduce resistance to sliding as if such use also with effect lubricating grease reservoir.In addition, form flange shape large-diameter portion as special-shaped portion, can prevent that each opening recess 742,618,53,64 of tabling from squinting to axial location at each transverse axis 44,45,52 as jut.In addition, need only the relative motion that does not hinder with each opening recess 742,618,53,64, the special-shaped portion that can have the shape of the assembling of being beneficial in the part setting of each transverse axis 44,45,52.
In addition, this embodiment have that interlocking at precalculated position constraint as Fig. 7 and back frame 5 shown in Figure 8 and chair base frame 6 moves, like Figure 10 and locking mechanism 8 shown in Figure 11.
This locking mechanism 8 is by constituting like the lower part: be installed in backstop housing 81 in the chair base frame 6, be accommodated in tabular stop dog component 82 in the backstop housing 81, be located at the rear of spring housing 71 and have the movable board 714 that supplies the connecting hole 715 that stop dog component 82 inserts, the driving and reversing mechanism 85 that stop dog component 82 is advanced and retreat up and down.Through such formation locking mechanism 8, thereby between backstop housing 81 and chair base frame 6, sandwich movable board 714 as spring housing 71 rearward end, restricted at above-below direction.In addition, as stated, spring housing 71, the sidewall 712 about it be accommodated in chair base frame about madial wall 612 between, nearby also limited to relatively move at left and right directions by the second sliding guidance portion 67 in rearward end.Therefore, the rearward end of spring housing 71 can not be carried out relatively moving of above-below direction and left and right directions with respect to chair base frame 6, only can carry out relatively moving of fore-and-aft direction.And relatively moving of this fore-and-aft direction also is fixed on the precalculated position by the action of locking mechanism 8.
Driving and reversing mechanism 85 is that torsion-coil spring (ね じ り コ ィ Le バ ネ) 83 constitutes with action bars 84 by being used for the spring that stop dog component 82 is given the operating physical force of above-below direction.Stop dog component 82 is integrally formed as the bottom by steel or resin raw material and has the tabular of 2 place's rectangle protuberances 821, nearby is provided with the patchhole 822 of the end 831 that is used to install torsion-coil spring 83 on top.Backstop housing 81 is through steel or resin raw material is integrally formed or bending process forms the channel shape that is made up of 3 planes that is used as that the fixing diapire 813 of board will link to each other with rear wall 812 as the antetheca 811 of a pair of relative wall.Shown in figure 12, offer the slot-shaped connecting hole 814 with the protuberance 821 roughly the same shapes of stop dog component 82 bottoms at diapire 813.
In addition, the said connecting hole 715 in the movable board 714 at spring housing 71 rears also is and the slit of the protuberance 821 roughly the same shapes of stop dog component 82 bottoms, is located at a plurality of positions at fore-and-aft direction with preset space length.In addition, at the diapire 616 of chair base frame 6, also the slot-shaped connecting hole 618 of shape roughly the same with it is being set with the protuberance of stop dog component 82 821 corresponding positions.
Like Figure 10 and shown in Figure 11; Action bars 84 roughly forms the cross section and is rectangular bar-shaped shape roughly; The operated operating side 841 of people forms flat, holds 842 sides in the effect of stop dog component about in the of 82 that make of the other end, is provided with the patchhole 843 of end 831 insertions that supply torsion-coil spring in the side; And be provided with the portion of keeping out of the way 845 that cuts a part and form, to take in torsion-coil spring 83 therein.In addition, between operating side 841 and effect end 842, the installation shaft 844 that is used for action bars 84 is installed on chair base frame 6 is provided with a pair of in the direction with the length direction quadrature of action bars 84.
In addition; With the mode that is accommodated in the portion of keeping out of the way 845 that the effect end of action bars 84 842 nearby is provided with torsion-coil spring 83 is being installed between stop dog component 82 and the action bars 84, with the direction of the coiling direction quadrature of spring on outstanding round about 2 spring terminals 831 respectively intercalation go into to be located at the patchhole 822,843 of stop dog component 82 and action bars 84.And; The operating side 841 of action bars 84 reaches the position that can supply the people to operate through the bar patchhole 691 in the sidewall setting of chair base frame 6, installation shaft 844 by the outside of the lateral wall that is arranged on chair base frame 6 613, constitute the bar installation portion 692 of controlling said installation shaft 844 and rotation engaging freely.
Therefore; Through operating side 841 at above-below direction operating operation bar 84; The effect end 842 of action bars 84 carries out knee-action in backstop housing 81, and it drives stop dog component 82 up and down via torsion-coil spring 83, antetheca 811 butts of this stop dog component 82 and backstop housing 81; To be somebody's turn to do the state knee-action of preceding wall guided, connecting hole 815 advance and retreat that the protuberance 821 of stop dog component 82 is provided with respect to the diapire 813 at backstop housing 81.
And; The protuberance 821 that becomes stop dog component 82 is outstanding from the connecting hole 815 of backstop housing 81; When being inserted into the state of the slot-shaped connecting hole 715 that is provided with at the movable board of spring housing 71 714 that is positioned at its downside; Chair base frame 6 is limited with the relative action of spring housing 71, the locking of the action of interlocking.
Particularly, each several part action as following, lock.
At first; Operating operation bar 84; Shown in Figure 12 (a), initial for the stop dog component that is positioned at upside 82, spring force is when making the directive effect of its downward side shifting; The protuberance 821 of stop dog component 82 is outstanding from the connecting hole 814 of the diapire 813 of being located at backstop housing 81, contacts with the spring case that is positioned at downside 71.At this moment, when the slot-shaped connecting hole 715 of the movable board 714 of being located at spring housing 71 was positioned at pairing position, shown in Figure 12 (b), the protuberance 821 of stop dog component inserted wherein.Even at the slot-shaped connecting hole 715 of being located at movable board 714 is not when being positioned at the position corresponding with the protuberance of stop dog component 82 821; If change the relative position of chair base frame 6 and spring housing 71 through the gradient that as Fig. 7 and Fig. 8, changes back frame 5; Thereby shown in Figure 12 (b) or Figure 12 (c); The connecting hole 715 of movable board 714 is aimed at the position corresponding with stop dog component 82, then can make protuberance 821 insertions of stop dog component.And stop dog component 82 also inserts the slot-shaped connecting hole 618 of the diapire 616 of chair base frame 6 simultaneously.
Be embedded in the slot-shaped connecting hole 715 of movable board 714 settings of spring housing 71 like this by the protuberance 821 of the stop dog component 82 that limits at fore-and-aft direction via backstop housing 81 with respect to chair base frame 6; Thereby the relative motion between chair base frame 6 and the spring housing 71 is limited, carries out the locking of interlocking position.At this moment, through so that the connecting hole of the protuberance of stop dog component 82 821 and movable board 714 715 in fore-and-aft direction side closely chimeric mode set size, thereby can reduce the offset after the locking.And; In this embodiment; Because stop dog component 82 also inserts the slot-shaped connecting hole 618 of the diapire 616 of chair base frame 6 simultaneously, the shearing force that therefore acts on stop dog component 82 only concentrates near the protuberance 821 on top, so suppress the distortion of stop dog component 82.
In addition; As stated; Limited as the movable board 714 of the rearward end of spring housing 71 with respect to chair base frame 6 relatively moving on above-below direction; The slot-shaped connecting hole 618 of the connecting hole 715 of movable board 714 and the diapire 616 of chair base frame 6 is difficult to produce offset thus always in the approaching position of above-below direction, easily stop dog component 82 is embedded these holes simultaneously.And; Because the movable board 714 as the rearward end of spring housing 71 is also limited relatively moving of left and right directions with respect to chair base frame 6; The connecting hole 715 of therefore movable board 714 and the slot-shaped connecting hole 618 easy keeping parallelisms of chair base frame 6 embed stop dog component 82 more easily.As a result, the operability of stop dog component 82 is good, and can reduce the protuberance 821 of stop dog component 82 and the difference in size between connecting hole 715 and the slot-shaped connecting hole 618, reduces loosening.
When unlocking; Through operating action bars shown in Figure 10 84; As Figure 12 (a), lift stop dog component 82 to the top; Its protuberance 821 is extracted from the connecting hole 715 of connecting hole of chair base frame 6 618 and spring housing 71, thereby with the restriction cancellation of the relative motion between chair base frame 6, the spring housing 71, the action of can interlocking once more.Through carrying out such action, interlocking position also can be changed into desirable position as Figure 12 (b), (c).
In addition, in this embodiment,, link between action bars 84 and the stop dog component 82 with torsion-coil spring 83 like Figure 11 and shown in Figure 13, only utilize this 1 spring member just can to stop dog component 82 apply up or down difference towards power.
Promptly; Like Figure 11 and shown in Figure 13; Near the patchhole 843 of the torsion-coil spring end 831 that the effect end 842 of action bars 84, is provided with and the patchhole 822 in the torsion-coil spring end 831 that stop dog component 82 is provided with are in the position relation that left and right directions staggers; When the end 831 with torsion-coil spring 83 is installed on the two respectively, always between the both ends 831,831 of spring, act on expansionary force.So torsion-coil spring 83 is supported to rotatable motion by each patchhole, therefore utilize the position relation of both sides' patchhole 843,822, direction capable of automatic changing is to the best position of balance.
Particularly, as following, move.
At first; Shown in the left figure of Figure 13 (a), action bars 84 is positioned at the scram position of locking, and its effect end 842 is positioned at downside; Stop dog component 82 by to above under the state that lifts; As right figure, torsion-coil spring 83 is positioned at the right-hand of figure with respect to patchhole 843,822, and is positioned at the top of action bars effect end 842.In the relation of such position, the expansionary force of torsion-coil spring 83 give make action bars 84 effect end 842 further downwards, make stop dog component 82 The further to the power of top, make current states more stable.When action bars 84 is moved to the open position of locking; Position relation separately is through the process of the left figure of Figure 13 (b), (c) left figure, (d) left figure, and the effect end 842 that becomes the such action bars 84 of (e) left figure is positioned at the position relation that downside, stop dog component 82 move downwards.In such course of action, torsion-coil spring 83 moves to the left of figure as (b) right figure, (c) right figure, (d) right figure, (e) right figure.And, opposite when the expansionary force of torsion-coil spring and the scram position of locking, give make action bars 84 effect end 842 further to the top, make stop dog component 82 further downwards power and keep stable state.When this state makes action bars 84 change to the scram position of locking once more,, return the state of Figure 13 (g), promptly with the identical state of Figure 13 (a) through the process of Figure 13 (f).
In addition; In the chair of this embodiment; Like Fig. 2 and shown in Figure 14; Be assembled with the height adjustment mechanism 2 to seat surface 32, it is probably by the gas spring (ガ ス ス プ リ Application グ) 21 of the pillar 12 of packing into, gas spring bar 22 formations that are used to push the outstanding part 211 that submerges on the top that is positioned at gas spring 21.And, through the operating side 221 of on the top, drawing gas spring bar 22, be that fulcrum moves effect end 222 downwards with holding section 223, push the outstanding part 211 that submerges of gas spring 21, thereby can carry out the height adjustment of seat surface 32 via scaffold 4.
Like Figure 14 and shown in Figure 15, the pillar 12 that is incorporated with gas spring 21 is the general cylindrical shape shapes that have protuberance 121 in its axial part, and the lower end intercalation is to the top of supporting leg 11.And intercalation has the propeller boss hole 42 as the pillar installing hole of scaffold 4 in the upper end, bears weight and scaffold 4 is supported in rotation freely with said protuberance 121.At this moment, the outstanding part 211 that submerges on gas spring bar 22 tops is outstanding from the top in propeller boss hole 42.
In scaffold 4, nearby as said, be provided with gas spring bar installation portion 43 with installing hole 431 based on Fig. 4 on the top in propeller boss hole 42.Like Figure 14 and shown in Figure 15; Gas spring bar 22 is inserted in the form supporting of the installing hole 431 of scaffold 4 settings with its holding section 223; Can be that rotate in certain limit at the center with this part; Stretch out to the side of chair operating side 221, and effect end 222 is positioned in the outstanding top of part 211 of submerging of the gas spring 21 of chair central part.
The center of gravity of gas spring bar 22 is positioned at than holding section 223 near operating side 221; Therefore the installing hole 431 of the gas spring bar installation portion 43 through holding section 223 being suspended to scaffold 4 only; Gas spring bar 22 will be that the center makes operating side 221 to downside ground rotation with holding section 223, below the rear of this holding section 223 224 with the position stability of butt above the gas spring bar installation portion 43.Thus, under this state, can assemble pillar 12 like a cork to scaffold 4.
And; In this embodiment, like Figure 16 and shown in Figure 17, only when the effect that makes gas spring bar 22 holds 222 sides to be the angle more than downside ground with respect to the horizontal plane has necessarily; Can carry out the insertion disengaging of holding section 223 with respect to installing hole 431; And that kind shown in figure 15 can make the effect of gas spring bar 22 hold 222 sides to get into 42 inside, propeller boss hole of scaffold 4.And after the position of the effect end 222 of the gas spring bar 22 for this assembling the time was assembled in the propeller boss hole 42 of scaffold 4 with pillar 12, interfered on the top of this pillar 12, and gas spring bar 22 can not form the angle that can insert disengaging.Therefore, behind assembling pillar 12,, pillar 12 just can not gas spring bar 22 not unloaded from scaffold 4 if being broken away from from scaffold 4.
Particularly, shown in figure 15, can insert disengaging for the hook-shaped holding section 223 that makes setting below gas spring bar 22 with respect to the installing hole 431 of scaffold 4, need make gas spring bar 22 and horizontal plane angulation is more than the α.
At this; Critical angle α such as Figure 22 that gas spring bar 22 can insert disengaging are schematically shown; According to the thickness t 2 on 223 tops, holding section of the thickness t 1 of gas spring bar installation portion, gas spring bar 22 and the width B of installing hole 431, and unique confirming as has B * angle of the relation of sin α-t1 * cos α=t2.
Shown in figure 15, when extracting pillar 12 out, the effect end of gas spring bar 22 not can with other component interferences, can be made as the above angle of α, gas spring bar 22 is inserted with respect to scaffold 4 break away from.
But; Shown in figure 21, when pillar 12 is assembled in scaffold 4, even under the operation gas spring bar 22, state that the outstanding part 211 that submerges of gas spring 21 is pressed into to greatest extent; Effect end 222 is interfered with gas spring 21 main bodys, can only reach β with the horizontal plane angulation.β is enough littler than α, therefore under this angle, can not extract mounted gas spring bar 22 out.
In addition, the installing hole 431 of scaffold 4 is also as shown in Figure 4, for will with the limit of the length direction quadrature of the gas spring bar 22 that engages with this installing hole 431 roughly rectangular shape as long limit.And the holding section 223 of setting below gas spring bar 22 is in order to have with the bearing surface of the shape-consistent of this installing hole 431 and the cross section is rectangle roughly.Therefore, gas spring bar 22 is stably rotated in operation in vertical, can not depart from from the top of the outstanding part 211 that submerges.
Through such configuration, when on the top, drawing the operating side 221 of gas spring bar 22, be that fulcrum effect end 222 moves downwards with holding section 223, can push the outstanding part 211 that submerges of gas spring 21, can carry out the height adjustment of seat surface.
As stated; The chair of this embodiment comprises: the scaffold 4 that is supported on pillar 12; Can be with respect to the back frame 5 of these scaffold 4 rise and falls; So that with said back frame 5 interlock ground along with the direction of the rise and fall of said back frame 5 on the chair base frame 6 that is associated with said scaffold 4 and said back frame 5 of the mode that moves; The savings competing phase is for the counter-force mechanism 7 of the spring force of the interlock action of the said chair base frame 6 of said scaffold 4 and said back frame 5; With the locking mechanism 8 of constraint with respect to the interlock action of the said chair base frame 6 of said scaffold 4 and said back frame 5; Wherein, Said counter-force mechanism 7 comprises spring housing of being located in the said chair base frame 6 71 and the spring 83 that is associated with this spring housing 71 and chair base frame 6; Said spring housing 71 is applied in association to be become: in said interlock action, carry out on one side the interlock action of tilting on one side to relatively move at fore-and-aft direction with respect to this chair base frame with this chair base frame 6 under by the state of said chair base frame 6 local restrictions in leading section and rearward end, the relative position of said locking mechanism 8 through fixing said spring housing 71 and the fore-and-aft direction of said chair base frame 6 retrains the interlock action of said said chair base frame 6 and said back frame 5 with respect to said scaffold 4.
Through such formation; Can realize synchronous interlocking mechanism with simple structure; And owing to should carry out the member of position limit only is the chair base frame 6 and spring housing 71 that is limited relative motion in the part; So fixedly the locking mechanism 8 of interlocking position is few for the restriction that the place is set, can realize with structure simple and that component number is few.Therefore, when realizing miniaturization, can seek cost cutting, improve action stability.And because chair base frame 6 and spring housing 71 always keep the state that is close, therefore the operability relevant with their fixed-site also is improved, and also can reduce the offset after fixing.
In addition; Said spring housing 71 is in leading section and rearward end; Restrained with respect to said chair base frame 6 relatively moving on above-below direction, therefore can improve the operability relevant, and the interlocking position after locking can not produce offset ground secure fixation with the locking of interlocking position.
And said spring housing 71 is located in the said chair base frame 6 in leading section and rearward end, and is restrained with respect to this chair base frame 6 relatively moving on left and right directions, therefore helps improving operability, reduces the interlocking position skew.
In addition; Make said locking mechanism 8 by with the direction of fore-and-aft direction quadrature on the stop dog component 82, the driving and reversing mechanism 85 that makes these stop dog component 82 advance and retreat that constitute freely of advance and retreat, the connecting hole 715 that supplies said stop dog component 82 to insert constitute; At said chair base frame 6 or said spring housing 71 said stop dog component 82 and said driving and reversing mechanism 85 are set; The opposing party said connecting hole 715 is set, can further improve above-mentioned effect thus.
In addition, through said spring housing 71, said stop dog component 82 and said driving and reversing mechanism 85 are limited in the height dimension of chair base frame 6 further miniaturization thus respectively.
In addition; The part that said connecting hole 715 is set is formed tabular, reduce corresponding stop dog component 82 and extract and insert required stroke, said on this basis stop dog component 82 is in the travel range of advance and retreat; Be limited in the height dimension scope of chair base frame 6, can further advance miniaturization thus.
In addition; Said connecting hole 715 is in the slit of extending with the direction of fore-and-aft direction quadrature; And on fore-and-aft direction, be provided with a plurality of with preset space length; And that said stop dog component 82 constitutes is tabular, and has the protuberance 821 with said connecting hole 715 tablings in its part, on one side the inner face guiding of being taken in the backstop housing 81 of this stop dog component 82 of a face of said stop dog component 82 carry out the advance and retreat of said stop dog component 82 on one side; Therefore latched position that can trickle change interlocking further improves and after locking, does not produce this basic function of offset.
And; Said backstop housing 81 is fixed in said chair base frame 6; Said connecting hole 715 is located at said spring housing 71, and the auxiliary connecting hole 618 that can supply the protuberance 821 of said stop dog component 82 closely to advance and retreat is located at chair base frame 6, the protuberance 821 of said stop dog component 82 inserts in said connecting hole 715 and the position that said auxiliary connecting hole 618 coincides simultaneously; Thus; The position that can make shearing force act on stop dog component 82 only concentrates near the protuberance 821, can not seek to prevent to break and make the advance and retreat action facilitation up and down of stop dog component 82 edges to the undue power of stop dog component 82 effects.
And; Said driving and reversing mechanism 85 by the action bars 84 of the advance and retreat of the backstop housing 81 of taking in said stop dog component 82, the said stop dog component 82 of operation, utilize the displacement of said action bars 84 and the spring member 83 that said stop dog component 82 is given the power that makes its advance and retreat constituted; Said spring member 83 is configured to application of force direction is removing the switching of position and latched position; Thereby can reduce component number, realize the structure of more miniaturization.
In addition, the concrete structure of each several part is not limited only to above-mentioned embodiment.
For example, in above-mentioned embodiment, shown in figure 10; Backstop housing 81 is fixed in chair base frame 6 sides, is limited fore-and-aft direction and stop dog component 82 can be advanced and retreat up and down with respect to chair base frame 6, stop dog component 82 intercalations go into to be located at the connecting hole 715 of spring housing 71 sides; But; If only be for the locking of the action of interlocking, also can backstop housing 81 and driving and reversing mechanism 85 be fixed on spring housing 71 sides, be positioned at chair base frame 6 sides with stop dog component 82 corresponding connecting holes 715.But; If the person of taking a seat conduct the locking operations, then preferred immobilization chair base frame 6 that seat surface arranged and action bars 84 are integratedly in the fore-and-aft direction action, for this reason; Preferably stop dog component 82 and driving and reversing mechanism 85 are set, said connecting hole 715 is located at said spring housing 71 in chair base frame 6 sides.
In addition, may not necessarily as above-mentioned embodiment, will make the direction of stop dog component 82 advance and retreat be made as above-below direction, so long as get final product with the direction of fore-and-aft direction quadrature.For example also can make following structure: the sidewall 612,712 at chair base frame 6 and spring housing 71 is provided with connecting hole 618,715, embeds stop dog component 82 for these connecting holes from left and right directions, restriction relatively moving along fore-and-aft direction.
Claims (9)
1. chair; Comprise: the scaffold that is supported on pillar; Can be with respect to the back frame of this scaffold rise and fall; With the chair base frame that is associated with said scaffold and said back frame with mode that said back frame interlock ground moves in the direction along the rise and fall of back frame, the savings competing phase is for the counter-force mechanism of the spring force of the interlock action of the said chair base frame of said scaffold and said back frame, the locking mechanism that constraint is moved with respect to the interlock of the said chair base frame of said scaffold and said back frame; It is characterized in that
Said counter-force mechanism comprises spring housing of being located in the said chair base frame and the spring that is associated with this spring housing and chair base frame; Said spring housing is applied in and is associated to: in said interlock action; Carry out on one side the interlock action of tilting on one side to relatively move at fore-and-aft direction with respect to this chair base frame with this chair base frame under by the state of said chair base frame local restriction in leading section and rearward end, the relative position of said locking mechanism through fixing said spring housing and the fore-and-aft direction of said chair base frame retrains with respect to the said chair base frame of said scaffold and the interlock of said back frame and moves.
2. chair according to claim 1 is characterized in that,
Said spring housing, in leading section and rearward end, restrained with respect to said chair base frame relatively moving on above-below direction.
3. chair according to claim 1 and 2 is characterized in that,
Said spring housing in leading section and rearward end, is located in the said chair base frame, restrained with respect to this chair base frame relatively moving on left and right directions.
4. according to each the described chair in the claim 1～3, it is characterized in that,
Said locking mechanism comprises: constitute with the direction of fore-and-aft direction quadrature on stop dog component free to advance or retreat, make the driving and reversing mechanism of these stop dog component advance and retreat and the connecting hole that supplies said stop dog component to insert; Arbitrary side in said chair base frame and said spring housing is provided with said stop dog component and said driving and reversing mechanism, the opposing party said connecting hole is set.
5. chair according to claim 4 is characterized in that,
Said spring housing, said stop dog component and said driving and reversing mechanism are limited in respectively in the height dimension scope of chair base frame.
6. according to claim 4 or 5 described chairs, it is characterized in that,
The part that said connecting hole is set is tabular, and said stop dog component is limited in the height dimension scope of chair base frame in the travel range of advance and retreat.
7. according to each the described chair in the claim 4～6, it is characterized in that,
Said connecting hole is along the slit of extending with the direction of fore-and-aft direction quadrature; On fore-and-aft direction, be provided with a plurality of with preset space length; And that said stop dog component constitutes is tabular; And have the protuberance with said connecting hole tabling in its part, on one side the inner face guiding of being taken in the backstop housing of this stop dog component of a face of said stop dog component carry out the advance and retreat of said stop dog component on one side.
8. chair according to claim 7 is characterized in that,
Said backstop housing is fixed in said chair base frame; Said connecting hole is located at said spring housing; And at chair base frame the auxiliary connecting hole that the protuberance that supplies said stop dog component can closely be advanced and retreat is set, the protuberance of said stop dog component inserts in the position that said connecting hole and said auxiliary connecting hole coincide simultaneously.
9. according to each the described chair in the claim 4～8, it is characterized in that,
Said driving and reversing mechanism comprises: take in said stop dog component backstop housing, the said stop dog component of operation advance and retreat action bars and give the spring member of the power that makes its advance and retreat through the displacement of said action bars to said stop dog component, said spring member is configured to removing position and latched position switching application of force direction.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010289159A JP2012135398A (en) | 2010-12-27 | 2010-12-27 | Chair |
| JP289159/2010 | 2010-12-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102525158A true CN102525158A (en) | 2012-07-04 |
Family
ID=45876939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104435776A Pending CN102525158A (en) | 2010-12-27 | 2011-12-27 | Chair |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20120161483A1 (en) |
| EP (1) | EP2468140A1 (en) |
| JP (1) | JP2012135398A (en) |
| CN (1) | CN102525158A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103799740A (en) * | 2012-11-06 | 2014-05-21 | 国誉家具株式会社 | Chair |
| CN107836881A (en) * | 2017-12-28 | 2018-03-27 | 南京六分仪文化创意有限公司 | Stand up spare seat |
| CN109330251A (en) * | 2018-11-26 | 2019-02-15 | 陈敏 | The structure that leans forward of seat |
| CN110636781A (en) * | 2017-06-20 | 2019-12-31 | 国誉株式会社 | Chair (Ref. TM. chair) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6429384B2 (en) * | 2015-01-16 | 2018-11-28 | 株式会社オカムラ | Chair |
| US11259637B2 (en) | 2015-04-13 | 2022-03-01 | Steelcase Inc. | Seating arrangement |
| US10194750B2 (en) | 2015-04-13 | 2019-02-05 | Steelcase Inc. | Seating arrangement |
| US10463153B2 (en) | 2016-06-09 | 2019-11-05 | Steelcase Inc. | Seating arrangement |
| GB2551737B (en) * | 2016-06-28 | 2019-06-05 | Posturite Ltd | Seat tilting mechanism with two springs |
| CN106073251B (en) * | 2016-08-05 | 2023-02-28 | 佛山职业技术学院 | Office chair mechanism with adjustable posture |
| USD851952S1 (en) | 2017-05-25 | 2019-06-25 | Steelcase Inc. | Seating arrangement |
| USD852525S1 (en) | 2017-05-25 | 2019-07-02 | 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 |
| USD852524S1 (en) | 2017-05-25 | 2019-07-02 | Steelcase Inc. | Seating arrangement |
| USD851417S1 (en) | 2017-05-25 | 2019-06-18 | Steelcase Inc. | Seating arrangement |
| USD846294S1 (en) | 2017-05-25 | 2019-04-23 | Steelcase Inc. | Seating arrangement |
| DE102017214298A1 (en) * | 2017-08-16 | 2019-02-21 | Sedus Stoll Ag | Connecting arrangement for a backrest and office or conference seating furniture |
| US11109683B2 (en) | 2019-02-21 | 2021-09-07 | Steelcase Inc. | Body support assembly and method for the use and assembly thereof |
| USD907935S1 (en) | 2019-05-31 | 2021-01-19 | Steelcase Inc. | Chair |
| USD907383S1 (en) | 2019-05-31 | 2021-01-12 | Steelcase Inc. | Chair with upholstered back |
| US11357329B2 (en) | 2019-12-13 | 2022-06-14 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
| JPWO2022091214A1 (en) * | 2020-10-27 | 2022-05-05 |
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| US4537445A (en) * | 1983-05-10 | 1985-08-27 | Meiko Industrial Co., Ltd. | Chair |
| CN1457240A (en) * | 2001-02-28 | 2003-11-19 | 英特施图尔办公室家具股份有限两合公司 | Chair, especially office chair |
| WO2005120291A1 (en) * | 2004-06-14 | 2005-12-22 | Vitra Patente Ag | Seat comprising a synchronous mechanism |
| US20100289309A1 (en) * | 2006-10-23 | 2010-11-18 | Ideassociates (Iom) Ltd. | Synchronizing device for an office chair |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS58127617A (en) | 1982-01-27 | 1983-07-29 | メ−コ−工業株式会社 | Chair |
| US5823626A (en) * | 1996-12-30 | 1998-10-20 | Haas; Peter J. | Mechanism for reclining chairs |
| US6086153A (en) * | 1997-10-24 | 2000-07-11 | Steelcase Inc. | Chair with reclineable back and adjustable energy mechanism |
| JP3852640B2 (en) * | 1997-12-16 | 2006-12-06 | 株式会社イトーキ | Chair |
| US6027168A (en) * | 1998-06-05 | 2000-02-22 | Leggett & Platt, Inc. | Chair seat horizontal adjustment mechanism |
| JP4216423B2 (en) | 1999-11-09 | 2009-01-28 | 株式会社岡村製作所 | Tilt range adjustment device for backrest in chair |
| JP2003189967A (en) | 2001-12-28 | 2003-07-08 | Itoki Crebio Corp | Chair |
| DE10241562A1 (en) | 2002-09-07 | 2004-03-18 | Bock-1 Gmbh & Co. | Synchronous mechanism for office chairs |
| US7293832B2 (en) * | 2005-08-19 | 2007-11-13 | Chien-Kai Huang | Chair adjustable device |
| DE102007040175B3 (en) * | 2007-05-07 | 2008-06-05 | Bock 1 Gmbh & Co. Kg | Synchronism mechanism for office chair, has spring arrangement with helical spring locked in area of winding channel against spring deformation, where channel acts on latch of adjusting arrangement, and has variable engagement depths |
| JP5724063B2 (en) * | 2010-12-27 | 2015-05-27 | コクヨ株式会社 | Chair |
-
2010
- 2010-12-27 JP JP2010289159A patent/JP2012135398A/en active Pending
-
2011
- 2011-02-22 EP EP11155301A patent/EP2468140A1/en not_active Withdrawn
- 2011-03-11 US US13/046,143 patent/US20120161483A1/en not_active Abandoned
- 2011-12-27 CN CN2011104435776A patent/CN102525158A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4537445A (en) * | 1983-05-10 | 1985-08-27 | Meiko Industrial Co., Ltd. | Chair |
| CN1457240A (en) * | 2001-02-28 | 2003-11-19 | 英特施图尔办公室家具股份有限两合公司 | Chair, especially office chair |
| WO2005120291A1 (en) * | 2004-06-14 | 2005-12-22 | Vitra Patente Ag | Seat comprising a synchronous mechanism |
| US20100289309A1 (en) * | 2006-10-23 | 2010-11-18 | Ideassociates (Iom) Ltd. | Synchronizing device for an office chair |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103799740A (en) * | 2012-11-06 | 2014-05-21 | 国誉家具株式会社 | Chair |
| CN103799740B (en) * | 2012-11-06 | 2017-10-27 | 国誉株式会社 | Chair |
| CN110636781A (en) * | 2017-06-20 | 2019-12-31 | 国誉株式会社 | Chair (Ref. TM. chair) |
| CN110636781B (en) * | 2017-06-20 | 2023-10-03 | 国誉株式会社 | Chair |
| CN107836881A (en) * | 2017-12-28 | 2018-03-27 | 南京六分仪文化创意有限公司 | Stand up spare seat |
| CN109330251A (en) * | 2018-11-26 | 2019-02-15 | 陈敏 | The structure that leans forward of seat |
| CN109330251B (en) * | 2018-11-26 | 2024-04-02 | 陈敏 | Forward tilting structure of chair seat |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2012135398A (en) | 2012-07-19 |
| US20120161483A1 (en) | 2012-06-28 |
| EP2468140A1 (en) | 2012-06-27 |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120704 |