CN102525159A - Chair - Google Patents
Chair Download PDFInfo
- Publication number
- CN102525159A CN102525159A CN2011104437856A CN201110443785A CN102525159A CN 102525159 A CN102525159 A CN 102525159A CN 2011104437856 A CN2011104437856 A CN 2011104437856A CN 201110443785 A CN201110443785 A CN 201110443785A CN 102525159 A CN102525159 A CN 102525159A
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- CN
- China
- Prior art keywords
- base frame
- spring
- chair
- chair base
- spring housing
- 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
- A47C1/03255—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
- A47C1/03205—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
- A47C1/03261—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 having less sliding resistance, less abrasion and less noise with prevention of partially contacting each component while the chair is making a 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 relative to the support frame 4, a seat frame 6 that is related to the support frame 4 and the back frame 5 so as to make a movement in conjunction with the back frame 5 toward a direction along the inclining movement of the back frame 5, and a spring case 71 arranged along the seat frame 6 in a state that a proximal point part of the spring case 71 is supported by the support frame 4 so as to introduce a spring force against a force of an interlocking movement of the seat frame 6 and the back frame 5 to the support frame 4, wherein a spring 72 is so arranged to be compressed by a movement of the seat frame 6 relative to the spring case 71, and a slide guide part 66 to make the spring case 71 and the seat frame 6 line-contact in a direction orthogonal to the back and forth direction is arranged between the spring case 71 and the seat frame 6.
Description
Technical field
The present invention relates to chair, relate in particular to the chair of seeking to reduce the resistance to sliding between chair base frame and the spring housing in uses such as offices.
Background technology
In the past, Yi Bian Yi Bian as having and rearward the slide chair of so-called synchronous interlocking (synchro locking) function that sinks to of the hypsokinesis of backrest action interlock ground seat support, for example known have a chair shown in the patent documentation 1.
This chair comprises: the scaffold that is supported on pillar; The back frame of (rise fall) action can rise and fall with respect to this scaffold; 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; Be used to import competing phase for the spring force of the interlock action of the said chair base frame of said scaffold and said back frame, the spring housing of said chair base frame configuration, utilize said chair base frame to cause the spring compression with respect to the relative action of said spring housing in the state lower edge that basic point portion is supported on scaffold.
Spring housing has the outside that is arranged on spring and extends upward the contact-making surface of setting in front and back, this contact-making surface can and the front and back of chair base frame extend upward between the pairing contact-making surface of setting and slide.And; Through the contact area between such increase spring housing and the chair base frame; Can reduce in the synchronization action of chair base frame and back frame between chair base frame and spring housing applied pressure each other, its result can reduce wearing and tearing on the contact-making surface, noise etc.
Patent documentation 1: Japan special table 2010-507399 communique
Summary of the invention
But; If chair base frame is contacted with spring case dignity; Even the pressure then between the two reduces; The tendency that has resistance to sliding as a whole to increase; And the direction that moves forward and backward of chair base frame depends on the linkage that is made up of scaffold, chair base frame and back frame, therefore exists in order to be formed on abreast that above-mentioned contact-making surface is the such guiding piece of its moving direction that wider range reduces because wearing and tearing, the noise that not comprehensive engagement (sheet is as り) causes, needs the problem of high manufacturing accuracy, assembly precision.
The objective of the invention is to effectively solve this problem.
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 in the mode that on the direction of the rise and fall of back frame, moves with said back frame interlock ground; Be used to import competing phase for the spring force of the interlock action of the said chair base frame of said scaffold and said back frame, under the state that basic point portion is supported on scaffold along the spring housing of said chair base frame configuration; Constitute and cause with respect to the relative action of said spring housing through said chair base frame and it is characterized in that the compression of spring, between said spring housing and said chair base frame, be provided for making the two to contact or the sliding guidance portion of some contact reaching the standard grade with the direction of fore-and-aft direction quadrature.
Because constitute like this, the contact area of the contact site of spring housing and chair base frame is defined, can expect effectively to reduce whole resistance to sliding.In addition and since spring housing and chair base frame with the direction of the direction quadrature that relatively moves on just line contact or the some contact, even therefore spring housing also can contact with chair base frame is not parallel, need not require that height as face contacts is processed, assembly precision.
And; In following formation, said sliding guidance portion is more suitable for using, promptly; Said spring housing makes said basic point portion can be supported on said scaffold around the mode that transverse axis rotates; Extension in tip side is formed with the benchmark spring base, relatively in said chair base frame side the fluid spring seat is set with this benchmark spring base, between two spring bases, disposes spring.
And; In following formation, also be more suitable for using; Promptly; Said scaffold and said spring housing can with at least than use angle by erecting the assembling angle loading and unloading of a side, be provided with along with said spring housing from said assembling angle to moving of said use angle and to the cam surface of said fluid spring seat at said scaffold to the spring compression direction application of force.
In order to make integral miniaturization; Preferably the part at said chair base frame forms blank part; Taking in said spring housing, be wholely set first sliding guidance portion along horizontal expansion pushing this position above spring housing at this blank part with the roughly the same height of said chair base frame.
And, even in order not to be strictly parallel between spring housing and the chair base frame, also the position relation of the two being kept suitably, the preferably said first sliding guidance portion only is arranged on 1 position along fore-and-aft direction.
In addition; For on left and right directions also with slight drag support spring housing top suitably; Preferably between the sidewall about said chair base frame, take in spring housing, the second sliding guidance portion that the left and right sides sidewall setting of sidewall about this chair base frame or the said spring housing relative with this sidewall extends longitudinally.
And, even be not strictly parallel between the sidewall for the sidewall of spring housing and chair base frame, also can the position relation be kept suitably, the preferably said second sliding guidance portion only is arranged on 1 position along fore-and-aft direction.
In addition, to chair base frame assembling spring housing, preferably said blank part is opening at the rear of said chair base frame for more easily, and the blank part with respect to said chair base frame inserts disengaging from said rear can to make said spring housing.
In addition, in order simply, suitably to form said sliding guidance portion, preferably with said sliding guidance portion make make the top crooked teat, be integrally formed in said spring housing or said chair base frame.
According to the present invention of above explanation, can provide a kind of make simple structure and do not need high processing, assembly precision, can reduce between chair base frame and the spring housing because the chair of the resistance to sliding that causes of synchronization action.
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 exploded perspective view of the counter-force mechanism and locking (lock) mechanism of this chair.
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 interlocking (locking) backstop 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 in each holding section of this chair of explanation bearing region want portion's cutaway view.
What Figure 20 was expression bearing components and sliding eye for the fastening state of the preceding transverse axis of this chair wants portion's stereogram.
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.
Figure 23 be constitute other embodiments of the present invention chair chair base frame want portion's sectional stereogram.
Description of reference numerals
4... scaffold
5... back frame
6... chair base frame
7... counter-force mechanism
44... preceding transverse axis
45... rear cross shaft
46... cam surface
52... middle transverse axis
53... to the open front recess
62... rotational slide hole
64... to the under shed recess
66... the first sliding guidance portion
67... the second sliding guidance portion
68... the 3rd sliding guidance portion
71... spring housing
72... compression helical spring
73... fluid spring seat (fluid spring support)
74... bearing components
75... benchmark spring base (benchmark spring support)
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 the spring force of competing phase, constitute counter-force mechanism 7 for the interlock action of the said chair base frame 6 of said scaffold 4 and said back frame 5.
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 イ 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 the chair base frame 6 that is associated with said scaffold 4 and said back frame 5 with mode that said back frame 5 interlock ground move forward and backward; Be used to import competing phase for the spring force of the interlock action of the said chair base frame 6 of said scaffold 4 and said back frame 5 so that basic point portion 716 is supported on the spring housing 71 of the state of scaffold 4 along said chair base frame 6 configurations; Because said chair base frame 6 is with respect to the relative action of said spring housing 71; Cause the compression of spring 72, wherein, between said spring housing 71 and said chair base frame 6, have and be used to make the two in the sliding guidance portion 66,67,68 that reaches the standard grade and contact with the direction of fore-and-aft direction quadrature.
Owing to constitute like this, spring housing 71 is limited with the contact area of the contact site of chair base frame 6, can expect effectively to reduce whole resistance to sliding.In addition and since spring housing 71 and chair base frame 6 with the direction of the direction quadrature that relatively moves on just line contact, also can contact even therefore spring housing 71 and chair base frame 6 are not parallel, need not require that height as face contacts is processed, assembly precision.
Especially; In the chair of this embodiment, said spring housing 71 can be rotated to support on said scaffold 4 with said basic point portion 716 around transverse axis 44, forms benchmark spring base 75 at the extension of tip side; In said chair base frame 6 sides fluid spring seat 73 to be set with these benchmark spring base 75 relative modes; At two spring bases 75, configuration spring 72 between 73, at this moment, because spring force makes the easy double swerve of extension of spring housing 71; Rock in order to suppress this, especially utilize the second sliding guidance portion 67 more effective.
In addition; Can be to load and unload said scaffold 4 and said spring housing 71 than use angle by the assembling angle that erects a side at least; Be provided with along with said spring housing 71 from said assembling angle to moving of said use angle and to the cam surface 46 of said fluid spring seat 73 at said scaffold 4 to the spring compression direction application of force; Under the situation of this formation, be compressed against chair base frame 6 and the resistance to sliding increase at assembling position spring housing 71, spring housing 71 is deviate from from chair base frame 6 easily in addition; Therefore in order to suppress this problem, utilize the first sliding guidance portion 66 especially effective.
In addition; Part at said chair base frame 6 forms blank part 65; At this blank part 65 to take in said spring housing 71 with said chair base frame 6 roughly the same height; The first sliding guidance portion 66 along horizontal expansion is set integratedly pushing this position above spring housing 71, can makes integral miniaturization thus.
Therefore and the said first sliding guidance portion 66 only is arranged on 1 position along fore-and-aft direction, even be not strictly parallel between spring housing 71 and the chair base frame 6, also can the position relation of the two be kept suitable.
In addition; As stated; Between the madial wall about said chair base frame 6 612, take in spring housing 71; The left and right sides sidewall 712 of madial wall 612 about this chair base frame 6 or the said spring housing 71 relative with this madial wall 612 is provided with the second sliding guidance portion 67 that extends longitudinally, thus can be at left and right directions also with slight drag support spring housing 71 tops suitably.
And the said second sliding guidance portion 67 only is arranged on 1 position along fore-and-aft direction, even be not strictly parallel between the madial wall 612 of the sidewall 712 of spring housing 71 and chair base frame 6 thus, also can the position relation be kept suitably.
In addition; Said blank part 65 is opening at the rear of said chair base frame 6; Said spring housing 71 can break away from from blank part 65 insertions of its openend 69 with respect to said chair base frame 6, therefore can carry out the assembling of spring housing 71 with respect to chair base frame 6 simply.
In addition, make said sliding guidance portion 66,67,68, therefore can simply, suitably form said sliding guidance portion 66,67,68 as the crooked teat in top, integrally formed with said chair base frame 6.
In addition, the concrete structure of each several part is not limited only to above-mentioned embodiment.
For example; In above-mentioned embodiment; The protuberance that 66,67,68 conducts of first, second, third sliding guidance portion contact with spring housing 71 lines and integrally formed with chair base frame 6, but so long as can limit the relative position of chair base frame 6 and spring housing 71 and the two is slided swimmingly, also can need not to be above-mentioned shape; Shown in Figure 23 (a), can make the sliding guidance portion 66,67,68 that the roller bearing mode of pony roll rotatably is installed at chair base frame 6.In addition; Can be such shown in Figure 23 (b); At chair base frame 6 hemispheric sliding part is set integratedly and constitutes sliding guidance portion 66,67,68; Such sliding guidance portion 66,67,68 that constitutes the ball bearing mode that small ball rotatably is installed makes chair base frame 6 and spring housing contact thus at 71 shown in Figure 23 (c).
In addition; In above-mentioned embodiment; Said sliding guidance 66,67,68 is integrally formed in chair base frame 6, but the major function of this sliding guidance is that the position relation of chair base frame 6 with spring housing 71 suitably kept, and reduces the contact site of the two; Make it along slide slidingly, even therefore sliding guidance portion 66,67,68 is located at the spring case side also can play same effect.
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 in the mode that on the direction of the rise and fall of back frame, moves with said back frame interlock ground; Be used to import competing phase for the spring force of the interlock action of the said chair base frame of said scaffold and said back frame, under the state that basic point portion is supported on scaffold along the spring housing of said chair base frame configuration; Constitute and cause with respect to the relative action of said spring housing through said chair base frame and it is characterized in that the compression of spring
Between said spring housing and said chair base frame, be provided for making the two to contact or the sliding guidance portion of some contact reaching the standard grade with the direction of fore-and-aft direction quadrature.
2. chair according to claim 1 is characterized in that,
Said spring housing makes said basic point portion can be supported on said scaffold around the mode that transverse axis rotates; Extension in tip side is formed with the benchmark spring base; Relatively the fluid spring seat is set with this benchmark spring base, between two spring bases, disposes spring in said chair base frame side.
3. chair according to claim 2 is characterized in that,
Said scaffold and said spring housing can with at least than use angle by erecting the assembling angle loading and unloading of a side, be provided with along with said spring housing from said assembling angle to moving of said use angle and to the cam surface of said fluid spring seat at said scaffold to the spring compression direction application of force.
4. according to claim 2 or 3 described chairs, it is characterized in that,
Form blank part in the part of said chair base frame, taking in said spring housing, be wholely set the first sliding guidance portion pushing this position above spring housing along horizontal expansion with the roughly the same height of said chair base frame at this blank part.
5. chair according to claim 4 is characterized in that,
The said first sliding guidance portion only is provided with at 1 position along fore-and-aft direction.
6. according to each the described chair in the claim 2～5, it is characterized in that,
Between the sidewall about said chair base frame, take in spring housing, arbitrary side of the left and right sides sidewall of sidewall about this chair base frame or the said spring housing relative with this sidewall is provided with the second sliding guidance portion that extends longitudinally.
7. chair according to claim 6 is characterized in that,
The said second sliding guidance portion only is provided with at 1 position along fore-and-aft direction.
8. according to each the described chair in the claim 4～7, it is characterized in that,
Said blank part is opening at the rear of said chair base frame, and the blank part with respect to said chair base frame inserts disengaging from said rear can to make said spring housing.
9. according to each the described chair in the claim 1～8, it is characterized in that,
Said sliding guidance portion be make the top crooked teat, be integrally formed in said spring housing or said chair base frame.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010289156A JP5724063B2 (en) | 2010-12-27 | 2010-12-27 | Chair |
| JP289156/2010 | 2010-12-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102525159A true CN102525159A (en) | 2012-07-04 |
Family
ID=43778172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104437856A Pending CN102525159A (en) | 2010-12-27 | 2011-12-27 | Chair |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20120161482A1 (en) |
| EP (1) | EP2468139A1 (en) |
| JP (1) | JP5724063B2 (en) |
| CN (1) | CN102525159A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1403471B1 (en) * | 2010-12-03 | 2013-10-17 | Imarc Spa | MECHANISM FOR OFFICE CHAIRS PROVIDED WITH A SWINGING FORCE ADJUSTMENT DEVICE. |
| JP2012135398A (en) * | 2010-12-27 | 2012-07-19 | Kokuyo Co Ltd | Chair |
| US20130049422A1 (en) * | 2011-08-22 | 2013-02-28 | Kuo-Ching Chou | Chair and Method for Fabricating the Same |
| JP6009891B2 (en) * | 2011-11-04 | 2016-10-19 | 株式会社岡村製作所 | Chair |
| US10463153B2 (en) | 2016-06-09 | 2019-11-05 | Steelcase Inc. | Seating arrangement |
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| CN101238933A (en) * | 2007-01-05 | 2008-08-13 | Omp股份有限公司 | Sports coupling servo mechanism for a seat part, in particular of a chair |
| CN101905661A (en) * | 2010-07-22 | 2010-12-08 | 江苏裕华汽车零部件有限公司 | Sliding rail for vehicle seat |
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|---|---|---|---|---|
| CH636252A5 (en) * | 1978-10-20 | 1983-05-31 | Syntech Sa | ERGONOMIC CHAIR. |
| JPH0450839Y2 (en) * | 1988-12-23 | 1992-12-01 | ||
| DE10109624C1 (en) * | 2001-02-28 | 2002-09-12 | Interstuhl Bueromoebel Gmbh | Chair, especially office chair |
| JP3974425B2 (en) * | 2002-02-25 | 2007-09-12 | 株式会社岡村製作所 | Reclining chair |
| DE10241562A1 (en) * | 2002-09-07 | 2004-03-18 | Bock-1 Gmbh & Co. | Synchronous mechanism for office chairs |
| JP5285261B2 (en) * | 2006-10-26 | 2013-09-11 | タカノ株式会社 | Chair reaction force adjustment device |
| JP2008302083A (en) * | 2007-06-08 | 2008-12-18 | Itoki Corp | Rocking chair |
-
2010
- 2010-12-27 JP JP2010289156A patent/JP5724063B2/en active Active
-
2011
- 2011-02-22 EP EP11155300A patent/EP2468139A1/en not_active Withdrawn
- 2011-03-11 US US13/046,078 patent/US20120161482A1/en not_active Abandoned
- 2011-12-27 CN CN2011104437856A patent/CN102525159A/en active Pending
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|---|---|---|---|---|
| US4840426A (en) * | 1987-09-30 | 1989-06-20 | Davis Furniture Industries, Inc. | Office chair |
| EP0460717A2 (en) * | 1987-09-30 | 1991-12-11 | Davis Furniture Industries Incorporated | Locking system for an office chair |
| US20020180248A1 (en) * | 2000-10-16 | 2002-12-05 | Yojiro Kinoshita | Chair |
| CN1537746A (en) * | 2003-04-17 | 2004-10-20 | 株式会社润永 | Slide for seat of vehicle |
| CN1623471A (en) * | 2003-12-06 | 2005-06-08 | Bock-1有限及两合公司 | Synchronised mechanism for an office chair |
| CN1730312A (en) * | 2005-08-23 | 2006-02-08 | 承峰 | Slide rail of vehicle seat |
| WO2008049435A1 (en) * | 2006-10-23 | 2008-05-02 | Ideassociates (Iom) Ltd | A synchronizing device for an office chair |
| CN101238933A (en) * | 2007-01-05 | 2008-08-13 | Omp股份有限公司 | Sports coupling servo mechanism for a seat part, in particular of a chair |
| CN101905661A (en) * | 2010-07-22 | 2010-12-08 | 江苏裕华汽车零部件有限公司 | Sliding rail for vehicle seat |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2012135395A (en) | 2012-07-19 |
| JP5724063B2 (en) | 2015-05-27 |
| US20120161482A1 (en) | 2012-06-28 |
| EP2468139A1 (en) | 2012-06-27 |
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| PB01 | Publication | ||
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Application publication date: 20120704 |