CN101951812A - Chair - Google Patents
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- CN101951812A CN101951812A CN2008801248581A CN200880124858A CN101951812A CN 101951812 A CN101951812 A CN 101951812A CN 2008801248581 A CN2008801248581 A CN 2008801248581A CN 200880124858 A CN200880124858 A CN 200880124858A CN 101951812 A CN101951812 A CN 101951812A
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- coupler body
- framework
- backrest
- chair
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Abstract
A chair whose seat (5) slides in a sinking backward direction accompanying the back tilting of a backrest (7) having an elastically deformable back shell (71) as its main body. A back-supporting rod (6) whose lower end is pivotally supported by a support base part (3) disposed under the seat (5) and which supports the back shell (71) has an upper back frame (61) which supports a section above a lumber support part (71L) out of the back shell (71) wherein the lumber support part (71L) is capable of supporting the waist of a seated person, and a lower back frame (62) which supports a section near the lower end of the back shell (71). The back frames (the upper back frame (61) and the lower back frame (62)) are pivotally attached to each other and the pivotally attaching point (a third spindle (X3)) is arranged behind the lower end of the back shell (71). Thus, with the back tilting of the upper back frame (61) relative to the lower back frame (62) around the pivotally attaching point (the third spindle (X3)), the back shell (71) so generally curve-deforms as to make the lumber support part (71L) relatively projected forward.
Description
Technical field
The present invention relates to the chair locating to use suitably in office etc.
Background technology
In the past, as the chair of locating to use suitably in office etc., known have the hypsokinesis action that is accompanied by backrest, seat support can be to the slide chair of so-called genlocing (synchro locking) function that moves of the direction that rearward descends.
Example as such chair, can be listed below described chair (for example with reference to following patent documentation 1): support coupler body (back shell) by backrest pole, the bottom of this backrest pole is forwards extended, can be with its elongated end around horizontal rotational shaft ground pivotal support in the support base on the top that is arranged at the chair pin, be accompanied by backrest pole and put on the correspondingly action of hypsokinesis of load of coupler body, make coupler body flexural deformation in the forwards outstanding mode in lumbal branch support part (lumbarsupport portion) of the waist that can support seated person in the coupler body.
In following patent documentation 1, technical scheme as described below is disclosed: the axle that the top of backrest (coupler body) can be supported in rotatably the top that is arranged at backrest pole, and back basifacial in the left and right sides of backrest portion, fixedly has the prerotation vane that the cam path of L shape is seen in the side respectively, action bars is operated and the oblique plate that is arranged at this action bars is integratedly moved in cam path, can adjust the forwards outstanding overhang in described lumbal branch support part thus.
Patent documentation 1: the spy opens the 2004-49719 communique
Summary of the invention
Yet above-mentioned chair in the past need be used to make the lumbal branch support part mechanism of outstanding special use forwards, causes the complicated of structure, and requires seated person (user) to operate especially, also needs the time just can be accustomed to the use of, and has the relatively poor problem of practicality.
In addition, above-mentioned chair is the chair with genlocing function of the hypsokinesis action that is accompanied by backrest, seat support interlock, on the other hand, is not have the chair that makes coupler body flexural deformation and only make backrest inclination (back tilting) function of backrest hypsokinesis.Even making up on the chair with backrest inclination function under the situation of above-mentioned structure, must be used to make mechanism's this point of lumbal branch support part outstanding special use forwards and require seated person (user) to operate this point especially same, practicality still is relatively poor.
The present invention is conceived to such problem and carries out, the chair of the practicality excellence that main purpose is to provide as described below: not only have the genlocing function, also has the backrest inclination function, do not need to be used for when the backrest inclination state that only makes the backrest hypsokinesis moves, to make the lumbal branch support part mechanism of outstanding special use forwards at common state never to the backrest imposed load, the simplification that can seek to construct, and need not require seated person to be used to the special operation that makes the lumbal branch support part forwards outstanding.
Promptly, chair of the present invention, be that to be accompanied by with coupler body that can strain be the chair that the hypsokinesis action of the backrest that forms of main body links to seat support, it is characterized in that: near bottom or the bottom position by pivotal support be disposed at described seat support below support base, support the backrest pole of described coupler body, comprise: support ratio in the described coupler body can support seated person waist the lumbal branch support part more by the upper backrest framework at the position of top and support the bottom of described coupler body or the bottom near the lower back framework at position, these backrest frameworks articulate each other, this pivoting point is set in the rear of the bottom side of described coupler body, being accompanied by described upper backrest framework is the action of center with respect to the hypsokinesis of described lower back framework with this pivoting point, and described coupler body is so that the relatively forwards outstanding mode integrally bending distortion in described lumbal branch support part.
If such chair, then become and have that seat support is accompanied by the hypsokinesis action of backrest and the genlocing function of interlock and make coupler body flexural deformation and only make the chair of the backrest inclination function of backrest hypsokinesis, and pivoting point is set in the rear of the bottom side of coupler body, this pivoting point is to support more in other words to be near the pivoting point of the lower back framework at the position upper backrest framework on the top of coupler body and the bottom of supporting coupler body or the bottom by the position of top than lumbal branch support part in the coupler body, so consciously body weight is put at seated person under the situation on top of coupler body, the upper backrest framework is the center hypsokinesis with described pivoting point, follow the upper side in this coupler body rearward crooked, its result, the top of coupler body and the zone between the bottom specifically are the flexural deformation on forwards outstanding direction automatically of lumbal branch support part, can give seated person with good lumbar support sense.And, with the degree on the top that body weight is put on coupler body correspondingly, the forwards outstanding overhang in lumbal branch support part also changes, so needn't operate special-purpose operating portion in addition, the mode that applies by seated person change self body weight, this overhang can be set at the overhang of the lumbal branch support part that can access good lumbar support sense, become the chair that the simplification that realizes structure can't harm any practicality simultaneously.
Like this, do not need to be provided for making the lumbal branch support part mechanism of outstanding special use forwards, so can realize the simplification of constructing effectively, and do not need to be used to the special operation that makes the forwards outstanding special operation in lumbal branch support part or be used to adjust the overhang of lumbal branch support part, so for seated person ease of use excellence yet.
Especially, if be made as: the backrest framework of any one party in described upper backrest framework and the described lower back framework possesses the over-hang part (overhangportion) that extends to predetermined direction from described pivoting point, between this over-hang part and the opposing party's backrest framework, dispose the hypsokinesis that is accompanied by described upper backrest framework and move and the elastomer of generation reaction force; Then can make the backrest inclination action special-purpose counter-force mechanism compactness of upper backrest framework with respect to the independent hypsokinesis of lower back framework.
In order to prevent to interfere the protrusion that suppresses forwards to protrude the lumbal branch support part and be out of shape owing to lumbal branch support part and upper backrest framework, preferably be made as: between the described lumbal branch support part of described upper backrest framework and described coupler body, the diastrophic space of the described coupler body when forming the hypsokinesis action that allows described backrest.
And then if be made as: at least one side in described upper backrest framework and the described lower back framework supports described coupler body with the state that can engage slidingly and movingly on short transverse; Then seated person with body weight put on the top of coupler body, when the upper backrest framework is the center hypsokinesis with the pivoting point, coupler body slides on short transverse with respect to the backrest framework of at least one side in upper backrest framework and the lower back framework and moves, and can successfully carry out the flexural deformation of coupler body integral body for backrest pole thus.
In addition, if form as described below: dispose the one group of described backrest pole that comprises described upper backrest framework and described lower back framework in the left and right sides of described coupler body width substantial middle portion; Then the both side ends of coupler body becomes state freely, even with resinous tabular component is the intensity that coupler body constitutes the back load that can support seated person, when the both ends, the left and right sides at coupler body are applied with under the situation of load, can be correspondingly flexibly crooked significantly with this load.Like this, allow the torsional deflection of coupler body, can carry out 3 D deformation with the corresponding coupler body of action of the mode that applies of the body weight of seated person and/or back.
For seated person with body weight put on the top of coupler body, when the upper backrest framework is the center hypsokinesis with the pivoting point, in order to make the distortion of coupler body integrally bending make the lumbal branch support part forwards outstanding reliably simultaneously, preferably: for the deformation characteristic to described coupler body is given direction, in the described lumbal branch support part of described coupler body, the distortion that is provided with than the easier local deformation in peripheral position of this lumbal branch support part causes the unit.
Cause the optimized technical scheme of unit as distortion, can enumerate by the one or more grooves that on the width of the left and right sides of described coupler body, extend and constitute the scheme that described distortion causes the unit.
As top illustrated, according to the present invention, can provide the chair of practicality excellence as described below: not only have the genlocing function, also has the backrest inclination function, do not need to be used for never to the common state of backrest imposed load when the backrest inclination state that only makes the backrest hypsokinesis moves, make the lumbal branch support part mechanism of outstanding special use forwards, the simplification that can seek to construct, and do not require that seated person is used to the special operation that makes the lumbal branch support part forwards outstanding.
Description of drawings
Fig. 1 is the overall diagram from the oblique forward observation chair relevant with an embodiment of the invention.
Fig. 2 is the overall diagram of observing the chair relevant with this embodiment from oblique rear.
Fig. 3 is the side view that is in the chair of common state in this embodiment.
Fig. 4 is the rearview that is in the chair of common state in this embodiment.
Fig. 5 omits the part of Fig. 3 and the Action Specification figure of expression.
Fig. 6 is that directions X among Fig. 5 is to view.
Fig. 7 is the part of Fig. 5, is the figure that only represents coupler body by width central longitudinal cross section, left and right sides model utility.
Fig. 8 is the figure of the installation form of the coupler body in Y zone of model utility presentation graphs 5 and backrest pole.
Fig. 9 be make the chair that is in the genlocing state in this embodiment corresponding with Fig. 3 and the expression figure.
Figure 10 be make the chair that is in the genlocing state in this embodiment corresponding with Fig. 5 and the expression figure.
Figure 11 be make the chair that is in the backrest inclination state in this embodiment corresponding with Fig. 3 and the expression figure.
Figure 12 be make the chair that is in the backrest inclination state in this embodiment corresponding with Fig. 5 and the expression figure.
Figure 13 makes a variation of the mechanism that is slidingly matched in this embodiment and the figure of model utility ground expression corresponding with Fig. 5 and Figure 12.
Label declaration
1: chair 3: support base 5: seat support
6: backrest pole 61: upper backrest framework 612: over-hang part
62: lower back framework 63: elastomer (the 2nd helical spring)
7: backrest 71: coupler body 713: distortion causes the unit
713a: groove 71L: lumbal branch support part X3: pivoting point (the 3rd fulcrum)
The specific embodiment
Below, with reference to description of drawings an embodiment of the invention.
The chair 1 relevant with present embodiment is so-called rotating chair as Fig. 1～shown in Figure 5, comprising: chair pin 2; Can be installed on the support base 3 of the upper end side of chair pin 2 with horizontally rotating; The front portion is supported on the seat support holder portion 4 of support base 3; Be installed on the seat support 5 of seat support holder portion 4; The bottom is articulated in support base 3 and supports the backrest pole 6 at the rear portion of seat support holder portion 4; With the backrest 7 that is installed on backrest pole 6.
Seat support holder portion 4 is configured in the top of described support base 3, inserts the state that leads in the slotted hole 32a of support base 3 with the not shown bar-shaped front baffle that is arranged at leading section and is supported on support base 3.The chair 1 of present embodiment possesses the handrail 8 that extends upward respectively near the position left and right sides edge portion of seat support holder portion 4.Handrail 8 shown in Fig. 1 etc. can not be adjusted height, but also can replace this handrail, and application can be adjusted the handrail of height.In addition, also can be the chair that does not have handrail.
At the lumbal branch support part of coupler body 71 71L, the distortion that is provided with than the easier local deformation in peripheral position of this lumbal branch support part 71L causes unit 713.In the present embodiment, cause unit 713, used the groove 713a that on the width of the left and right sides, extends as distortion.It also can be a plurality of that the number of groove 713a can be one, in the present embodiment, is provided with on short transverse a pair of groove 713a up and down across predetermined space.
At coupler body top 71T, (this figure is the compound mode of coupler body 71 and backrest pole 6 that is used for the Y zone of presentation graphs 5 as Fig. 8, model utility represents coupler body top 71T is assembled in the figure of state in the preorder stage of backrest pole 6) shown in, one or fully be provided with holding section 714 that is rearward outstanding, that can engage with the hole 611 that is slidingly fastened of the upper end that is formed at upper backrest framework 61 described later integratedly.In addition, in Fig. 8, the opening 711 of shell on the back top 71T has been omitted.Holding section 714 probably forms bulk, has flange part 714a integratedly in top ends (from the back side of coupler body 71 away from the end of a side).
At coupler body bottom 71U, shown in Fig. 5 waits, one or fully be provided with rearward outstanding integratedly and be supported on supported 715 of upper end of bottom described later framework.In the present embodiment, be that the bottom of coupler body 71 is provided with laminal supported 715 of pair of right and left in the bottom of coupler body bottom 71U.
The backrest pole 6 of supporting such coupler body 71 is shown in Fig. 5 etc., possess: upper backrest framework 61, its lumbal branch support part 71L that supports the waist of the ratio support seated person in the coupler body 71 more depends on the position specifically described coupler body top 71T of top; With the lower back framework 62 that supports coupler body bottom 71U, constitute, the pivoting point (the 3rd fulcrum X3 described later) of these upper backrest frameworks 61 and lower back framework 62 is set in the rear of the bottom side of described coupler body 71, and upper backrest framework 61 can be that tilting action (tilting operation) is carried out with respect to lower back framework 62 in the center with this pivoting point.In addition, as shown in Figure 2, in upper backrest framework 61 and lower back framework 62, respectively from the rear or the below be coated with upper backrest framework lid 61c and lower back framework lid 62c, can not directly observe from the outside.
Each lower back framework body 621 roughly forms tabular, and extend to oblique rear gradually at the position near the upper end from the bottom, has near the side-glance shape of position, upper end towards the bending of oblique the place ahead.
The axle 622 that is rigidly connected forms bar-shaped, by suitable methods such as welding with across state be fixed between the bottom of lower back framework body 621.
For such lower back framework 62 is installed on support base 3, by by be rigidly connected the axle 622 states that pair of right and left lower back framework body 621 is rigidly connected under, begin to be adjacent to near the rear of the position mode each other bottom that support base 3 is clipped in each lower back framework body 621 from support base 3, under the state that the inserting hole 621a that makes near the position bottom that is arranged at each lower back framework body 621 and the not shown inserting hole that is arranged at two sagging side wall portions 32 of support base 3 interconnect, the 1st fulcrum X1 inserted logical wherein, install.Thus, lower back framework 62 and even backrest pole 6 can be that the center is with respect to support base 3 rotations with the 1st fulcrum X1.In addition, in the present embodiment, the position is provided with the extension 621b that more forwards extends than other position integratedly near the bottom of each lower back framework body 621, is formed with inserting hole 621a at each extension 621b.The 1st fulcrum X1 disposes relatively by the rear and by the top with respect to the axle 622 that is rigidly connected.
The chair 1 relevant with present embodiment, be installed in lower back framework 62 under the state of support base 3, the axle 622 that is rigidly connected of lower back framework 62 be positioned than following (the specifically sagging side wall portion 32 following) of support base 3 more by the below, between this is rigidly connected axle 622 and support base 3, dispose the hypsokinesis action that is accompanied by backrest pole 6 and the helical spring 911 of generation reaction force.And, constitute, when lower back framework 62 was the center hypsokinesis with described the 1st fulcrum X1, the axle 622 that is rigidly connected loaded helical spring 911 to the direction of savings bounce.
Specifically, as shown in Figure 6, the axle 622 that is rigidly connected is supported with a distolateral 911x of helical spring seat portion who is arranged at helical spring 911 described later at its length direction central portion.Helical spring 911 and the 911x of helical spring seat portion are configured for adjusting the inclination reaction force adjusting device 9 of the reaction force when making 6 hypsokinesis of backrest pole.
Inclination reaction force adjusting device 9 possesses as Fig. 5 and shown in Figure 6: take at least a portion and produce the reaction force generating unit 91 of the reaction force when making 6 hypsokinesis of backrest pole independently with seat support holder portion 4 in support base 3; With the reaction force adjustment operating portion 92 lateral margin front that is arranged at seat support 5, that be used to adjust the reaction intensity of force of operating reaction force generating unit 91.
If more particularly, reaction force generating unit 91 possesses: helical spring 911; With compression elongated portion 912, this compression elongated portion be arranged at this helical spring 911 a distolateral and adjustment operations linkage that accepted with operating portion 92 with described reaction force adjustment make described helical spring 911 compress or extend.Compression elongated portion 912 comprises: the adjustment operations linkage ground of being accepted with operating portion 92 with described reaction force adjustment, with the direction of the compression prolonging direction quadrature of helical spring 911 on advance and retreat overlook roughly trapezoidal sliding part 912a; Slide and overlook roughly trapezoidal baffle plate (retainer) 912b with respect to this sliding part 912a while what support that described helical spring 911 advances and retreat on described compression prolonging direction; With the described baffle plate guide part 33a that this baffle plate 912b is led to the advance and retreat of described compression prolonging direction.This baffle plate guide part 33a is formed at the partition wall 33 of the support base 3 that is used to support seat support holder portion 4 as mentioned above.
The reaction force adjustment possesses with operating portion 92: connect the sagging side wall portion 32 of any one party in the support base 3 and bar 921 that extends on the width of the left and right sides and the operating handle 922 that is arranged at the top ends of this bar 921 and bar 921 is rotated around axle.
Turn back to the explanation of lower back framework 62.Each lower back framework body 621 in lower back framework 62, position below leaning on slightly than short transverse central portion is provided with the 2nd extension 621c that forwards extends than peripheral position integratedly, by to be fixed in the rear end side that these the 2nd extensions 621c the 2nd fulcrum X2 each other supports described seat support holder portion 4 across state.And then near the position upper end of each lower back framework body 621 can not be fixed with supported 715 of described coupler body 71 with changing angle relatively by suitable parts such as threaded fasteners.
By pivotal support as shown in Figure 5 in the upper backrest framework 61 of the upper end of the lower back framework 62 that forms such structure, have and be sandwiched in described pair of right and left lower back framework body 621 width dimensions each other, form upper end and bottom than the more outstanding side-looking of short transverse central portion " く " shape roughly.In the upper end of upper backrest framework 61, as shown in Figure 8, be formed with the hole 611 that is slidingly fastened that the described holding section 714 that is arranged at coupler body top 71T can be slidingly fastened.The hole 611 that is slidingly fastened comprises: the flange part 714a of holding section 714 can insert the 611a of macropore portion of taking-up and above the 611a of this macropore portion continuously and the 611b of aperture portion that is provided with, the 611b of this aperture portion under the state that the flange part 714a that inserts from the 611a of macropore portion does not break away from, can allow holding section 714 relatively slip move.Set the height dimension of the 611b of aperture portion bigger than the height dimension of the 611a of macropore portion, guarantee to be slidingly fastened hole 611 and holding section 714 move surplus relative to slip.
Be formed with the not shown inserting hole that on the width of the left and right sides, connects in the bottom of upper backrest framework 61, under the state that this inserting hole and the inserting hole 621d that is arranged at the upper end of each lower back framework body 621 are interconnected, the 3rd fulcrum X3 inserted logical wherein, upper backrest framework 61 can be that the hypsokinesis action is carried out at the center with the 3rd fulcrum X3 (being equivalent to " pivoting point " of the present invention) thus.In the present embodiment, be set at the rear that the 3rd fulcrum X3 is configured in the bottom side of coupler body 71.And then, upper backrest framework 61 possesses the over-hang part 612 that extends than described pivoting point (the 3rd fulcrum X3) downwards, between this over-hang part 612 and lower back framework 62, dispose the hypsokinesis that is accompanied by upper backrest framework 61 and move and conduct elastomeric the 2nd helical spring 63 of the present invention of generation reaction force.In the present embodiment, near the upper end of the described bending of ratio in the pair of right and left lower back framework body 621 of lower back framework 62 position slightly by the position of lower side each other, to be fixed with the 4th fulcrum X4 across state, support an end of the 2nd helical spring 63 at the 4th fulcrum X4, the other end of the 2nd helical spring 63 is supported on the over-hang part 612 of upper backrest framework 61.
Be supported on respectively at coupler body top 71T and coupler body bottom 71U under the state of upper end of the upper end of upper backrest framework 61 and lower back framework 62, between coupler body 71 and backrest pole 6 (specifically being upper backrest framework 61), be formed with the space.
Next, using method and the effect for the chair 1 relevant with present embodiment that is made of each above-mentioned member describes.
The chair 1 relevant with present embodiment can be in following state at least: as Fig. 1～shown in Figure 5, backrest 7 is in the common state (S) that erects posture; As Fig. 9 and shown in Figure 10, be accompanied by hypsokinesis action, seat support 5 interlocks of backrest 7 and genlocing (the tilting synchronously) state (R) that slides and move to the direction that rearward descends; With as Figure 11 and shown in Figure 12, by common state (S) down seated person consciously body weight is put on backrest 7 top, make upper backrest framework 61 with the 3rd fulcrum X3 (pivoting point of the present invention) be the center hypsokinesis, to follow in the 71 whole side-looking flexural deformations of this coupler body be arc backrest reflex action state (T).
Under the situation that is in common state (S), be that coupler body 71 that main body constitutes overcomes its elasticity and forms side-looking and be bent into arc shape with the elasticity plate body.
Under situation about with respect to the chair 1 that is in so common state (S), seated person back integral body being leaned against on the backrest 7, as shown in figure 10, the relative angle that backrest pole 6 is kept upper backrest framework 61 and lower back framework 62 is the center hypsokinesis with described the 1st fulcrum X1 unchangeably, also hypsokinesis of coupler body 71.At this moment, the body weight of seated person roughly puts on backrest 7 integral body equably, so upper backrest framework 61 can be with respect to 62 hypsokinesis of lower back framework, in other words, upper backrest framework 61 does not change with the relative angle of lower back framework 62, coupler body 71 also keeping with the roughly the same shape of common state (S) shape down hypsokinesis.Be accompanied by the hypsokinesis action of this backrest pole 6, the described seat support holder portion 4 that supports rear end side by described the 2nd fulcrum X2 of lower back framework 62 makes the preceding framework (diagram is omitted) that is arranged at its leading section move to the direction slip that rearward descends mobile in slotted hole 32a on one side.Its result, seat support 5 integral body that supported by seat support holder portion 4 move (with reference to Fig. 9) with seat support holder portion 4 to the directions slip that equidirectional promptly rearward descends, and chair 1 becomes genlocing state (R).
In addition, under the situation that is in genlocing state (R), the axle 622 that is rigidly connected of lower back framework 62 is pushed described helical spring 911 to the direction of savings bounce, so seated person with back from backrest 7 when promptly sitting up above the waist, by the bounce of helical spring 911, make the described common posture before backrest pole 6 integral body automatically return to hypsokinesis.In the present embodiment, can adjust reaction force when making backrest 7 hypsokinesis by described inclination reaction force adjusting device 9.Specifically, make operating handle 922 to clockwise or during the rotation of any one direction (for example clockwise) counterclockwise, with its interlock, sliding part 912a moves to the direction that approaches operating handle 922, this sliding part 912a pushes baffle plate 912b.So the baffle plate 912b that is pushed by sliding part 912a moves to the direction of compression helical spring 911, can increase the reaction force when making backrest 7 hypsokinesis.On the other hand, if make operating handle 922 (for example counterclockwise) rotation in the opposite direction, the reaction force in the time of just can reducing to make backrest 7 hypsokinesis.
On the other hand, when consciously body weight being put under the situation of coupler body top 71T at the following seated person of common state (S), as shown in figure 12, the upper backrest framework 61 in the backrest pole 6 is that the center is with respect to 62 hypsokinesis of lower back framework with the 3rd fulcrum X3.Be accompanied by the hypsokinesis action of this upper backrest framework 61, effect will make its rearward crooked power on the coupler body top 71T that is supported by upper backrest framework 61 in coupler body 71, on the other hand, the lower back framework 62 of the bottom of the coupler body 71 that is supported by lower back framework 62 by not hypsokinesis is maintained at the position common state (S) under, so coupler body 71 is so that the further flexural deformation of mode that further forwards give prominence at the position between coupler body top 71T and the coupler body bottom 71U is arc.In the present embodiment, the lumbal branch support part of coupler body 71 71L be provided with distortion cause unit 713, specifically for groove 713a, so be deformed into when arc at coupler body 71 integrally bendings, lumbal branch support part 71L is to the direction distortion of the open height that shortens groove 713a, its result, this lumbal branch support part 71L compare relatively forwards outstanding with the situation that is in common state (S).In addition, in the present embodiment, coupler body top 71T engages in the mode that can be on short transverse move relative to sliding and is supported in upper backrest framework 61, when 61 hypsokinesis of upper backrest framework, the described holding section 714 that is arranged at coupler body top 71T is moved relative to sliding on short transverse in the hole 611 that is slidingly fastened of the upper end that is formed at upper backrest framework 61, in the scope that the fastening state in the hole 611 that is slidingly fastened with respect to this is not disengaged, and coupler body 71 integral body can be followed the hypsokinesis action of upper backrest framework 61 and flexural deformation thus.The form that the chair 1 of present embodiment moves relative to slip on the 71T of coupler body top for the upper end that makes upper backrest framework 61, wherein, the position of other in the ratio of curvature coupler body 71 of the flexure plane of overlooking of coupler body top 71T is little, forming roughly linearity along short transverse, moves so can carry out this slip swimmingly under stable status.
Be accompanied by chair 1 and shift to backrest inclination state (T) from common state (S), the over-hang part 612 of upper backrest framework 61 is pushed the 2nd helical spring 63 between this over-hang part 612 and lower back framework 62 to the direction of savings bounce.Therefore, seated person with back from backrest 7 when promptly sitting up above the waist, by the bounce of the 2nd helical spring 63, make upper backrest framework 61 automatically restore to the common posture before the hypsokinesis, chair 1 turns back to common state (S) from backrest inclination state (T).In addition, chair 1 from common state (S) when backrest inclination state (T) shifts, than the shape under the common state (S) also flexural deformation be the elastic recovering force of arc coupler body 71, work as the power that on the direction that forwards retracts upper backrest framework 61, loads.Therefore, be at chair 1 under the situation of backrest inclination state (T), when seated person puts on body weight lumbal branch support part 71L consciously, described loading force further increases, the bounce addition of this loading force and described the 2nd helical spring 63, seated person with back from backrest 7 when promptly sitting up above the waist, upper backrest framework 61 is followed this action and is automatically restored to hypsokinesis common state before immediately.
In addition, chair 1 from common state (S) after backrest inclination state (T) shifts, when seated person further puts on body weight backrest 71 integral body, be the posture that upper backrest framework 61 keeps with respect to 62 hypsokinesis of lower back framework on one side, Yi Bian be that lower back framework 62 is the center hypsokinesis with described the 1st fulcrum X1.Its result, chair 1 becomes the hypsokinesis state (diagram is omitted) with the combination of backrest inclination state (T) and genlocing state (R).Roughly same therewith, from common state (S) after genlocing state (R) shifts, when seated person further puts on upper backrest framework 61 with body weight consciously, upper backrest framework 61 with described the 3rd fulcrum X3 be the center with respect to 62 hypsokinesis of lower back framework, become hypsokinesis state (diagram is omitted) with the combination of genlocing state (R) and backrest inclination state (T).
Promptly, the chair relevant 1 with present embodiment with the mode of taking one's seat of seated person, more specifically say so body weight the mode that applies correspondingly, the centre that can be in 2 different in common state (S), genlocing state (R), backrest inclination state (T), hypsokinesis state or these states states is intermediateness (for example state (S) and the intermediateness of genlocing state (R) or the intermediateness of state (S) and backrest inclination state (T) usually usually, diagram is omitted).
In addition, the chair 1 of present embodiment possesses and is arranged at inclination brake apparatus A between backrest pole 6 and the support base 3, that can carry out the tilting action of backrest 7 selectively.Inclination brake apparatus A, the bottom of this inclination brake apparatus A can swingingly be supported on the rear end side of support base 3, the upper end of inclination brake apparatus A can swingingly be supported on the 4th fulcrum X4 of lower back framework 62, in the present embodiment, as inclination brake apparatus A, be suitable for possess gas spring body A1 roughly cylindraceous and for by roughly whole be accommodated in the piston rod portion (diagram omission) that advance and retreat in this gas spring body A1, as the known gas spring that the inclination detent works, omit detailed explanation.
Like this, the chair 1 relevant with present embodiment becomes can be in that seat support 5 is accompanied by the hypsokinesis action of backrest 7 and the genlocing state (R) of interlock only makes the chair 1 of the backrest inclination state (T) that backrest 7 tilts with making coupler body 71 flexural deformations, and support ratio lumbal branch support part 71L in the coupler body 71 specifically is set in the bottom side of coupler body 71 for the upper backrest framework 61 of coupler body top 71T and the pivoting point (the 3rd fulcrum X3) of the lower back framework 62 of the bottom of supporting coupler body 71 by the position of top rear, when so seated person puts on body weight on the top of coupler body 71 consciously, upper backrest framework 61 is the center hypsokinesis with pivoting point (the 3rd fulcrum X3), follow in this, upper side in the coupler body 71 is rearward crooked, its result, the top of coupler body 71 and the zone between the bottom more particularly lumbal branch support part 71L can give seated person with good lumbar support sense from the forwards outstanding direction flexural deformation of trend.And, with body weight put on coupler body 71 top degree correspondingly, 71L forwards outstanding overhang in lumbal branch support part also changes, so needn't operate special-purpose operating portion in addition, change the mode that applies of the body weight of self by seated person, just this overhang can be set at the overhang of the lumbal branch support part 71L that can access good lumbar support sense, become the chair that the simplification that realizes structure can't harm any practicality simultaneously.
Especially, upper backrest framework 61 possesses the over-hang part 612 that extends than pivoting point (the 3rd fulcrum X3) downwards, between this over-hang part 612 and lower back framework 62, disposing the hypsokinesis that is accompanied by upper backrest framework 61 moves and the elastomer (the 2nd helical spring 63) of generation reaction force, so the counter-force mechanism compactness that backrest inclination is used can effectively be avoided the maximization of constructing and complicated.
In addition, set in the mode that between the 71L of the lumbal branch support part of upper backrest framework 61 and coupler body 71, is formed with the space, so can prevent from reliably to interfere and suppress lumbal branch support part 71L and forwards protrude the situation of distortion owing to lumbal branch support part 71L and upper backrest framework 61.
In addition, dispose the one group of backrest pole 6 that constitutes by upper backrest framework 61 and lower back framework 62 in the left and right sides of coupler body 71 width substantial middle portion, so the both side ends of coupler body 71 becomes opening, the torsional deflection of coupler body 71 can be allowed, three-dimensional deflection deformation can be carried out with the corresponding coupler body 71 of the mode that applies of the body weight of seated person.In addition, in the present embodiment, be formed with a plurality of peristomes 711, so the existence of these a plurality of peristomes 711 goes far towards to support near the realization of the level and smooth torsional deflection of the coupler body top 71T the shoulder of seated person at coupler body top 71T.If furthermore, to be aperture opening ratio become big mode gradually towards the upper edge of coupler body 71 and both sides of the edge portion sets in the shared ratio of presumptive area with opening 711, also helps the level and smooth diastrophic realization of coupler body top 71T.
In order to give direction to the deformation characteristic of coupler body 71, at the lumbal branch support part of coupler body 71 71L, the distortion that is provided with than the easier local deformation in peripheral position of lumbal branch support part 71L causes unit 713, so when being the center hypsokinesis, make lumbal branch support part 71L forwards outstanding reliably with pivoting point (the 3rd fulcrum X3) while coupler body 71 integrally bendings are out of shape in upper backrest framework 61.Especially, in the present embodiment, constitute distortion by a plurality of groove 713a that on the width of the left and right sides of coupler body 71, extend and cause unit 713, so can realize that distortion causes unit 713 by extremely simple method.
In addition, the present invention's embodiment of being not limited to be described in detail above.
For example, in said embodiment, illustration form as described below: upper backrest framework 61 possesses the over-hang part 612 that extends to predetermined direction from pivoting point (the 3rd fulcrum X3), between over-hang part 612 and lower back framework 62, dispose the hypsokinesis that is accompanied by upper backrest framework 61 and move and the elastomer (the 2nd helical spring 63) of generation reaction force; But also can replace in this, be made as form as described below: the lower back framework is made as the over-hang part that possesses from further extending with the pivoting point of upper backrest framework to predetermined direction (for example top), between this over-hang part and upper backrest framework, dispose the hypsokinesis that is accompanied by the upper backrest framework and move and the elastomer of generation reaction force.
In addition, produce the elastomer of reaction force as the hypsokinesis action that is accompanied by the upper backrest framework, also can use direction of principal axis is roughly consistent with the left and right sides width of chair, extend in the opposite direction from the axle center mutually at both ends so-called helical spring and/or rubber.And then, be arranged at the over-hang part of the framework of any one party in upper backrest framework or the lower back framework, can certainly be accompanied by the upper backrest framework hypsokinesis action and will be between the direction stretching of the elastomer between over-hang part and the opposing party's the framework to the savings bounce.
In addition, in said embodiment, illustration upper backrest framework 61 with coupler body top 71T be supported for can be on short transverse the form of the state of engaging slidingly and movingly, but also can replace in this, the lower back framework is the state that can engage slidingly and movingly on short transverse with the lower support of coupler body, and perhaps any one in upper backrest framework and the lower back framework is supported for coupler body the state that can engage slidingly and movingly on short transverse.Promptly, can be to allow the coupler body and the mechanism that is slidingly fastened relative to slip is moved of backrest pole only to be arranged at form between upper backrest framework and the coupler body, perhaps only be arranged between lower back framework and the coupler body, perhaps be arranged at the form arbitrarily in the form between each backrest framework and the coupler body respectively.And then the distance that can slide waits as long as correspondingly suitably carry out design alteration with specification etc.In said embodiment, illustration in connecting hole the form of engaging holding section, but also can replace connecting hole and use slot.And, as the mechanism that is slidingly fastened, also can adopt and be provided with engaging recessed parts such as connecting hole or slot in the coupler body side integratedly, be provided with the form that can be slidingly fastened in the engaging protuberance of engaging recessed part on the seat back frame side.As the one example, as shown in figure 13, can be listed below described form: the back side on coupler body 71 (coupler body top), only be provided with the engaging recessed part 714 ' of the pocket-like of opening downwards integratedly, on the other hand, in backrest pole (upper backrest framework 61), the side-looking that setting can be inserted in described engaging recessed part 714 ' from the below is the engaging that the makes progress engaging protuberance 611 ' of L shape, be accompanied by the hypsokinesis action of upper backrest framework 61, do not connect in the scope of removing with the fastening state of engaging recessed part 714 ' engaging recessed part 714 ' is reduced for the amount of swallowing that engages protuberance 611 ' at engaging protuberance 611 ', it is mobile to make that thus coupler body 71 can slide on short transverse with respect to backrest pole (upper backrest framework 61).At this moment, can make engaging recessed part and engage protuberance and engage mutually, can carry out assembling operation simply by making coupler body fall into backrest pole from the top.
In addition, can be made as also that the position disposes the form of the backrest pole that is made of upper backrest framework and lower back framework respectively near the both side edges portion of coupler body or both side edges portion.That is, also can be the chair that possesses the group of the backrest pole that many groups (comprising more than 3 groups) are made of upper backrest framework and lower back framework.
Cause the unit as distortion, also can replace the groove that on the width of the left and right sides of coupler body, extends, and use thinner wall section (thin-walled hinge), from the both side edges of the coupler body notch that cuts of width central authorities and/or uniformly-spaced or a plurality of holes of being provided with, compartment of terrain to the left and right respectively along the left and right sides width of coupler body.
In addition, the lower back framework also can not support the bottom of coupler body and support near the position bottom.
In addition, also be not limited to above-mentioned embodiment, in the scope that does not break away from purport of the present invention, can carry out various distortion for the concrete structure of each several part.
As mentioned above, according to the present invention, provide the chair of practicality excellence as described below: not only have the genlocing function, also has the backrest inclination function, do not need to be used for when the backrest inclination state that only makes the backrest hypsokinesis moves, to make the lumbal branch support part mechanism of outstanding special use forwards at common state never to the backrest imposed load, the simplification that can seek to construct, and do not require that seated person is used to the special operation that makes the lumbal branch support part forwards outstanding.
Claims (7)
1. chair is that seat support is accompanied by with coupler body that can strain to be the chair that the hypsokinesis action of the backrest that forms of main body links, to it is characterized in that:
Near bottom or the bottom position by pivotal support be disposed at described seat support below backrest pole support base, that support described coupler body comprise: support ratio in the described coupler body and can support the lumbal branch support part of waist of seated person more by the upper backrest framework at the position of top; And support near the lower back framework at the position bottom of described coupler body or the bottom, these backrest frameworks articulate each other, this pivoting point is set in the rear of the bottom side of described coupler body, being accompanied by described upper backrest framework is the action of center with respect to the hypsokinesis of described lower back framework with this pivoting point, and described coupler body is so that the relatively forwards outstanding mode integrally bending distortion in described lumbal branch support part.
2. chair as claimed in claim 1, wherein: the backrest framework of any one party in described upper backrest framework and the described lower back framework possesses the over-hang part that extends to predetermined direction from described pivoting point, between this over-hang part and the opposing party's backrest framework, dispose the hypsokinesis that is accompanied by described upper backrest framework and move and the elastomer of generation reaction force.
3. chair as claimed in claim 1 or 2, wherein: between the described lumbal branch support part of described upper backrest framework and described coupler body, be formed with the space.
4. as claim 1,2 or 3 described chairs, wherein: the state that at least one side in described upper backrest framework and the described lower back framework moves described coupler body sliding on short transverse mode engages supports.
5. as claim 1,2,3 or 4 described chairs, wherein: dispose the one group of described backrest pole that comprises described upper backrest framework and described lower back framework in the left and right sides of described coupler body width substantial middle portion.
6. as claim 1,2,3,4 or 5 described chairs, wherein: for the deformation characteristic to described coupler body is given direction, the distortion that is provided with in the described lumbal branch support part of described coupler body than the easier local deformation in peripheral position of this lumbal branch support part causes the unit.
7. chair as claimed in claim 6, wherein: described distortion causes that the unit is the one or more grooves that extend on the width of the left and right sides of described coupler body.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008007398A JP5347141B2 (en) | 2008-01-16 | 2008-01-16 | Chair |
| JP007398/2008 | 2008-01-16 | ||
| PCT/JP2008/064032 WO2009090769A1 (en) | 2008-01-16 | 2008-08-05 | Chair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101951812A true CN101951812A (en) | 2011-01-19 |
| CN101951812B CN101951812B (en) | 2014-11-12 |
Family
ID=43455057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880124858.1A Active CN101951812B (en) | 2008-01-16 | 2008-08-05 | Chair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101951812B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102687958A (en) * | 2011-03-25 | 2012-09-26 | 卓岳股份有限公司 | Chair back support linkage device |
| CN103796554A (en) * | 2011-09-14 | 2014-05-14 | 白木工业株式会社 | Lumbar support apparatus |
| CN109008378A (en) * | 2018-09-13 | 2018-12-18 | 欧亚平 | A kind of movable supporting attachment structure suitable for seat |
| CN111248678A (en) * | 2018-12-03 | 2020-06-09 | 国誉家具（中国）有限公司 | Chair (Ref. TM. chair) |
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| JP2002282081A (en) * | 2001-03-22 | 2002-10-02 | Kokuyo Co Ltd | Chair |
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| CN1465314A (en) * | 2002-07-03 | 2004-01-07 | 国誉株式会社 | Chair |
| CN1537490A (en) * | 2003-02-16 | 2004-10-20 | ����˹��˹�ж��ɷݹ�˾ | Backrest |
| JP2007307425A (en) * | 2007-08-31 | 2007-11-29 | Kokuyo Co Ltd | Chair |
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| JP2507575Y2 (en) * | 1991-01-31 | 1996-08-14 | 株式会社イトーキクレビオ | Chair backrest device |
| US6523898B1 (en) * | 1999-06-17 | 2003-02-25 | Steelcase Development Corporation | Chair construction |
| JP2002282081A (en) * | 2001-03-22 | 2002-10-02 | Kokuyo Co Ltd | Chair |
| CN1465314A (en) * | 2002-07-03 | 2004-01-07 | 国誉株式会社 | Chair |
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| JP2007307425A (en) * | 2007-08-31 | 2007-11-29 | Kokuyo Co Ltd | Chair |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102687958A (en) * | 2011-03-25 | 2012-09-26 | 卓岳股份有限公司 | Chair back support linkage device |
| CN103796554A (en) * | 2011-09-14 | 2014-05-14 | 白木工业株式会社 | Lumbar support apparatus |
| US9326614B2 (en) | 2011-09-14 | 2016-05-03 | Shiroki Corporation | Lumbar support apparatus |
| CN103796554B (en) * | 2011-09-14 | 2017-02-15 | 白木工业株式会社 | Lumbar support apparatus |
| CN109008378A (en) * | 2018-09-13 | 2018-12-18 | 欧亚平 | A kind of movable supporting attachment structure suitable for seat |
| CN109008378B (en) * | 2018-09-13 | 2024-04-05 | 安吉县盛信办公家具有限公司 | Movable support body connection structure suitable for seat |
| CN111248678A (en) * | 2018-12-03 | 2020-06-09 | 国誉家具（中国）有限公司 | Chair (Ref. TM. chair) |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101951812B (en) | 2014-11-12 |
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