CN201123561Y

CN201123561Y - Chair structure

Info

Publication number: CN201123561Y
Application number: CNU2007200943114U
Authority: CN
Inventors: 冈本功
Original assignee: CHEN DENGHUI
Current assignee: Takano Co Ltd
Priority date: 2007-09-06
Filing date: 2007-09-06
Publication date: 2008-10-01
Anticipated expiration: 2017-09-06
Also published as: ITMI20080277U1; DE202008000735U1; US20110074197A1

Abstract

The utility model relates to a chair structure, and belongs to the furniture class. The utility model comprises supporting feet, a base used to support the supporting feet, a chair-back supporting body arranged on the chair-back, a chair seat supporting body arranged on a chair seat, a first rocking central shaft, a second rocking central shaft and a third rocking central shaft, wherein, the first rocking central shaft is arranged on the base, inclined backward and connected with the chair-back supporting body; the second rocking central shaft is arranged at the same height or a higher position in front of the first rocking central shaft and connects the chair seat supporting body on the base through rocking; the third rocking central shaft is arranged between the first rocking central shaft and the second rocking central shaft, is used to connect the higher positions of the first rocking central shaft and the second rocking central shaft, is linked with the back of the chair-back supporting body to rise, and connects the chair-back supporting body and the chair seat supporting body through rocking in the up-down direction; and the third rocking central shaft is connected to the second rocking central shaft. The chair structure has the advantages of simple structure, convenient use, low cost, more comfort, and strong practicability.

Description

Chair structure

Technical field

The utility model relates to furniture, and particularly a kind of Chair structure refers to a kind of Chair structure that seat support is risen with the hypsokinesis interlock chair back especially.

Background technology

As everyone knows, for have with the chair back shake the generation interlock, and the chair that shakes structure synchronously that seat support is moved, with the hypsokinesis generation interlock of the chair back, the chair that seat support is sunk, though it is more and more universal, but opposite, also have in addition and chair back hypsokinesis interlock, and the chair that seat support is risen;

For with the hypsokinesis generation interlock of the chair back, make for the chair of the kenel that seat support rises, as shown in Figure 37, this kind chair possesses following structure: comprise leg 101, the pedestal 102 that is supported by leg 101, be installed in the chair back pole 104 on the chair back 103, be installed in the seat support supporter 106 on the seat support 105 and be attached at the connection shaft 107 that can make 104 hypsokinesis of chair back pole on the pedestal 102, the latch lever 108 of connected chair seat supports body 106 on the pedestal 102, with the prolongation 112 of chair back pole 104, with the connection shaft 109 of seat support supporter 106 bindings; After making the state hypsokinesis that the chair back 103 erects, axle 109 is rising; In addition, by the rising of axle 109, and feasible latch lever 108 of swinging to the place ahead is risen; Said structure, with the hypsokinesis generation interlock of the chair back 103, and seat support 105 promptly becomes rising; In this chair, make the strength of seat support 105 sedimentations, become the strength that the chair back 103 is erected, therefore, take the body weight of the occupant on seat support 105, just, resistance has taken place the hypsokinesis of the chair back 103; Also the therefore heavy more people of body weight if will make the chair back 103 hypsokinesis, just needs big more strength, makes the reaction force of the strength of the chair back 103 hypsokinesis, according to occupant's body weight, and obtains the strength that is consistent;

But above-mentioned Chair structure is in use, still has following point:

When seat support 105 was risen, the axle 110 of latch lever 108 by downside be at center steering, and from the state that square neck forward falls, become the state that erects; In stage for latch lever 108 begins to erect, in other words, begin at the chair back under the stage of hypsokinesis, seat support 105 becomes the state of liftable maximum, and the occupant is in making the chair back 103 process that square neck falls backward, and it is maximum that the reaction force that takes place at this initial stage becomes, afterwards, reaction force reduces again; The chair of this type when the chair back 103 begins to topple over, need bigger strength, and the occupant also must lean against at full tilt on the chair back 103; Yet if the chair back 103 is when being poured onto to a certain degree, and reaction force will weaken suddenly, thereby makes the chair back 103 topple over suddenly easily, and therefore, the setting of its reaction force may not be said so suitably; In addition, because the chair of this class, used the first half that connects seat support supporter 106 and latch lever 108 between the pedestal 102, thus the part number of packages also phase deformation get more, in other words, latch lever 108 promptly becomes necessary accessory, but also need be arranged on the axle 110,111 of latch lever about in the of 108, thus, cause the increase of part number of packages, manufacturing cost to increase, it is complicated that structure also becomes, and need be improved.

The utility model content

The purpose of this utility model is to provide a kind of Chair structure, and the setting that has solved Chair structure complexity commonly used, cost height and reaction force is inappropriate, problems such as comfort level difference.

The technical solution of the utility model is: comprise leg; Support the pedestal of leg; Be installed in the back support body on the chair back; Be installed in the seat support supporter on the seat support; Being provided with on pedestal retreats and link first of chair back supporter shakes central shaft; The position first shake central shaft the place ahead equal height or above, the seat support supporter shakes and is attached at second of pedestal and shakes central shaft; The position first and second shake between the central shaft, link this first and second shake the position of central shaft connecting line above more, back support body and seat support supporter are upper and lower to shaking binding, shake central shaft with the 3rd of the hypsokinesis interlock of back support body, rising, the 3rd shakes central shaft is linked to second and shakes central shaft; And make second sliding structure of shaking central shaft oblique upper guiding backward; Wherein, sliding structure is the circular-arc mode of convex with the mode or the position of straight line at downside, and central shaft is shaken in guiding second; Pedestal has the fixedly last Lock structure of back support body; Should go up Lock structure and have the fixedly rock body of back support body, be linked to the latch lever of this rock body, be linked to the operative configuration of this latch lever, rock body shakes under the state that is restricted on the connection locking bar, when operative configuration is subjected to operating, carry out strain and absorb the displacement that rock body shakes, when accumulating strength, performance may make rock body shake and make the strain portion of the strength that rock body shakes.

Advantage of the present utility model is: when the chair back is toppled over backward, in the stage that begins to incline, can prevent the action of seat support as significantly rising, slightly rising afterwards again; Also therefore, the chair back can be prevented after toppling over to a certain degree, because of reaction force weakens the situation of toppling over easily fast, the comfort of chair can be promoted again; In addition,, guide the 3rd structure of shaking central shaft, can make Chair structure comparatively simple, and can reduce manufacturing cost by the relation of sliding structure; When the chair back when the hypsokinesis, make the rising of seat support present the state of homogenization, or make the rising of seat support slowly become big; Therefore, when the occupant leans against on the chair back, when making the chair back, can keep certain reaction force, or because of the angle of the chair back, and keep the reaction force of appropriateness, thereby it is more comfortable that chair is sat up toward hypsokinesis; Have on the pedestal fixing back support body on Lock structure, therefore the chair back can be fixed on primary position, chair is also more followed one's bent in the use; Easy to use, cost is low, and is practical.

Description of drawings:

Fig. 1 is the do not retreat schematic side view of state of the chair back of the present utility model;

Fig. 2 is the retreat schematic side view of state of the chair back of the present utility model;

Fig. 3 is the not cross-sectional schematic of past hypsokinesis of back support body of the present utility model;

Fig. 4 is the cross-sectional schematic of back support body of the present utility model toward hypsokinesis;

Fig. 5 is assembled in the floor map of pedestal for the utility model back support body;

Fig. 6 is the V-V cross-sectional schematic of Fig. 4;

Fig. 7 is the amplification cross-sectional schematic of action bars of the present utility model mounting portion;

Fig. 8 is another embodiment schematic side view of the present utility model;

Fig. 9 is the fixedly cross-sectional schematic of back support body of the utility model;

Figure 10 is the fixing cross-sectional schematic of back support body of the utility model;

Figure 11 is the floor map that goes up Lock structure of the present utility model;

Figure 12 is the fixing schematic diagram of back support body of the revolving body of Lock structure on the utility model;

Figure 13 is the fixing schematic diagram of back support body of revolving body of Lock structure on the utility model;

Figure 14 is that the jack back of Lock structure on the utility model is installed in the schematic diagram on the pedestal;

Figure 15 installs the schematic diagram that part is fixed on the seat support supporter for the utility model seat support;

Figure 16 installs the schematic diagram that part is fixed in the seat support supporter for the utility model handrail;

Figure 17 is the side schematic view of the utility model except that sliding structure;

Figure 18 is the side schematic view of the utility model except that counter-force mechanism;

Figure 19 is the utility model counter-force mechanism

Figure 20 is the embodiment schematic diagram of the utility model seat support bottom surface;

Figure 21 is the A-A cross-sectional schematic of Figure 20;

Figure 22 is the B-B cross-sectional schematic of Figure 20;

Figure 23 is another embodiment schematic diagram of the utility model seat support bottom surface;

Figure 24 is the A-A cross-sectional schematic of Figure 23;

Figure 25 is the another embodiment schematic diagram of the utility model seat support bottom surface;

Figure 26 looks schematic diagram for the side of installation constitution shown in Figure 25;

Figure 27 looks schematic diagram for the front of installation constitution shown in Figure 25;

Figure 28 is an embodiment schematic diagram again of the utility model seat support bottom surface;

Figure 29 is the A-A cross-sectional schematic of Figure 28;

Figure 30 is the enforcement profile of the utility model height adjustment structure action bars;

Figure 31 is the fixing cross-sectional schematic of back support body of Lock structure on the utility model;

Figure 32 is Lock structure, the fixing generalized section of back support body of going up shown in Figure 31;

Figure 33 is the floor map that goes up Lock structure shown in Figure 32;

Figure 34 is the X-X cross-sectional schematic of Figure 33;

Figure 35 is the Y-Y cross-sectional schematic of Figure 34;

Figure 36 is the Z-Z cross-sectional schematic of Figure 34;

Figure 37 is that the chair back of conventional chair is not toward the side schematic view of hypsokinesis.

The specific embodiment:

To shown in the accompanying drawing 7, the utility model chair comprises leg 1 as accompanying drawing 1; Support the pedestal 2 of leg 1; Be installed in the back support body 4 of the chair back 3; Be installed in the seat support supporter 6 on the seat support 5; Be linked to pedestal 2, make back support body 4 shake central shaft 7 toward first of hypsokinesis; Be linked to pedestal 2, make seat support supporter 6 second shake central shaft 8 to what shake toward upper and lowers; Link chair back supporter 4 and seat support supporter 6, making it can be toward upper and lower to shaking, and shakes central shaft 9 with the 3rd of the hypsokinesis interlock of back support body 4, rising; With the 3rd rising interlock that shakes central shaft 9, make second sliding structure 10 of shaking central shaft 8 oblique upper guiding backward;

Pedestal 2 be embedded in leg 1 above; The base plate 2a of pedestal 2 is provided with because the cylindrical portion 2b of undergauge slowly up; Be provided with the gas spring 18 that Height Adjustment is used in the leg 1, the top upper end from leg 1 of this gas spring 18 is outstanding; The side face on gas spring 18 tops presents from lower to upper the slowly inclined plane of undergauge; Therefore, by top with gas spring 18, by under insert in the cylindrical portion 2b, and pedestal 2 can be installed on the top of leg 1; Left side plate 2c, the 2d's of pedestal 2 is latter half of, is being provided with to wear first perforation of shaking central shaft 7, and on first half, is being provided with and wears the 2nd perforation of shaking central shaft 8; To wear the 2nd in the present embodiment and shake the perforation of central shaft 8 as slotted hole, as sliding structure 10; In addition, below this slotted hole is expressed as sliding structure 10;

Seat support supporter 6 is supporting seat support 5, therefore can shake freely and be installed in sliding freely on the pedestal 2; The structure of seat support supporter 6 is made of side plate 6b, the 6c of upper plate 6a that is configured in pedestal 2 tops and the pair of right and left that hangs down from upper plate 6a both sides of the edge, and these parts are formed with a crooked sheet material; With seat support 5 is example, utilizes screw that seat support 5 is installed on the upper plate 6a, about

side plate

6b, 6c, be configured in the side plate 2c of pedestal 2, the outside of 2d; The left side plate 6b of seat support supporter 6, the central part of 6c are provided with and wear the 3rd perforation of shaking central shaft 9, then are provided with on the first half and wear second perforation of shaking central shaft 8;

The effect of back support body 4 is supporting the chair back 3, therefore can shake and be installed on pedestal 2 freely; The structure of back support body 4, by side plate 2c, the 2d of pedestal 2, and the pair of right and left side plate 4a, the 4b that are disposed between side plate 6b, the 6c of seat support supporter 6, and set gripper shoe 4c constitutes between left side plate 4a, the 4b; The first half of gripper shoe 4c and latter half of formation height paragraph gap, wherein first half is high, latter half of for low; Gripper shoe 4c's is latter half of, is carrying to be arranged on the latter half of carrying 4d of

left side plate

4a, 4b, fixes in the mode that welds and so on; By this setting, with

left side plate

4a, 4b, and gripper shoe 4c forms integrated; By the mode that welds and so on, be fixed on the installing plate 11 on the chair back 3, mode with bolt and so on, be fixed on gripper shoe 4c latter half of, the first half of gripper shoe 4c extends to than latter half of high position, is disposed at the top of pedestal 2, on the central part of side plate 4a, the 4b on limit, back support body 4 left and right sides, first perforation of shaking central shaft 7 is worn in setting, then is provided with on the first half and wears the 3rd perforation of shaking central shaft 9;

First shakes the perforation that central shaft 7 passes the perforation that is arranged on pedestal 2 and is positioned at back support body 4, and back support body 4 is connected in pedestal 2, and can be toward hypsokinesis; First shakes the front end of central shaft 7, has embedded only pulling device 12; Second shakes central shaft 8 has passed the sliding structure 10 that is arranged on pedestal 2, and a perforation at seat support supporter 6, connects pedestal 2, and seat support supporter 6 may be shaken toward direction up and down; Second shakes on the front end of central shaft 8, has embedded only pulling device 12; The 3rd shakes central shaft 6 has passed the perforation that is arranged on seat support supporter 6, and the perforation that is positioned at back support body 4, connects seat support supporter 6 and back support body 4, and makes it and can shake; The 3rd shakes the front end of central shaft 9, embeds to end pulling device 12;

Sliding structure 10 peripheries embed the push button 13 of polyacetals system, make second slip of shaking central shaft 8 present slick and sly state; The angle of sliding structure 10, preferably toward oblique posterosuperior direction, for example about 40 degree～70 degree tilt, and wherein tiltedly go up about 55 degree in rear again in the past and tilt best; Moreover the length of sliding structure 10 if tiltedly went up under the situations of rear inclination 55 degree in the past, is 25mm, and shaking central shaft 8 with second is example, makes it to rise about 20mm;

Second shakes central shaft 8 is disposed at first the place ahead of shaking central shaft 7, and than first shake central shaft 7 high position; Second shakes central shaft 8 shakes the displacement of central shaft 9 along with the 3rd, and is directed, is moved to sliding structure 10; The scope of its displacement is shaken central shaft 7 the place aheads than first, and than first scope of shaking central shaft 7 tops; But be disposed at first the place ahead of shaking central shaft 7 if shake central shaft 8, and position and first shakes the identical height of central shaft 7 with second, and by this position, guide to sliding structure 10, oblique upper displacement backward also can; In addition, even if under this kind state, second shakes central shaft 8 at first position displacement that shakes central shaft 7 the place aheads; Moreover the 3rd shakes central shaft 9 is disposed at first, second and shakes between the

central shaft

7,8, and the position is than the position that links above first, second tie line L that shakes

central shaft

7,8; The 3rd shakes central shaft 9 displacement with the hypsokinesis of back support body 4, and the scope of displacement is shaken between the

central shaft

7,8 at first, second, and than first, second shake tie line L that

central shaft

7,8 is linked to be come the position of top;

In addition, second shakes central shaft 8 when the scope that first shakes below the central shaft 7, the situation that can be subjected to displacement not, therefore, can be along with the hypsokinesis of back support body 4, and allowed second to shake central shaft 8 sleekly toward rising;

Between pedestal 2 and the back support body 4, be provided with reaction force structure 14, reaction force structure 14, presses back support body 4 and makes it to restore to the original state when making back support body 4 toward hypsokinesis by the strength of back support body 4 being given the top, gets back to original position; With accompanying drawing 3 and accompanying drawing 4 is example, constituted by coil spring 15 and the latch plate 16 that is arranged on coil spring 15 two ends, the latch plate 16 of upside, folding moves the side face in the axle center 17 among the latch plate 16 that is embedded in downside, follow the flexible of coil spring 15, make it and downside latch plate 16 between distance change; Downside latch plate 16 is provided with recess 16a, and upside latch plate 16 is provided with protuberance 16b; Reaction force structure 14 embeds the protuberance 2g that is arranged on pedestal 2 with this recess 16a, and protuberance 16b is inserted into recess 4g set on the back support body 4, is arranged at by this between pedestal 2 and the back support body 4; Reaction force structure 14 is disposed at first rear of shaking central shaft 7, in case back support body 4 has promptly compressed coil spring 15 toward hypsokinesis, and reaction force takes place;

The gas spring 18 that Height Adjustment is used is operated by height adjustment structure 19; Height adjustment structure 19 is with for example action bars 20 and with the mode of action bars 20 to shake, and the mounted apparatus 21 that is installed in pedestal 2 constitutes; The formation of action bars 20, comprise the control stick that is bent into crank-like, promptly from the wide cut direction of chair extend, prolonging of fitting operation plate 22 20a of portion, and the axle 20b of branch that the 20a of portion extends toward the rear from prolonging, and the operating portion 20c that extends toward the wide cut direction of chair from the front end of the 20b of axle branch; The axle 20b of branch and operating portion 20c are accommodated among the pedestal 2, and the long perforation 2h from the right plate 2c that is arranged on pedestal 2 will prolong the 20a of portion and give prominence to from the outside of pedestal 2; By two ribbed arch 2i that are arranged on pedestal 2, and the mounted apparatus 21 of set ribbed arch 2j between these ribbed arches 2i, make that the axle 20b of branch obtains to support and can turn round; In other words, the recess of the recess of two ribbed arch 2i and mounted apparatus 21 from having clamped the axle 20b of branch up and down, and has constituted bearing portion; Operating portion 20c fills in the protuberance 18a of gas spring 18, and forms exercisable state; The long perforation 2h of pedestal 2 forms the shape that action bars 20 can shake; Action bars 20 prolongs the 20a of portion down by making from body weight, has lifted operating portion 20c;

In a single day the occupant leans against after the chair back 3, the coil spring 15 of limit compression reaction force structure 14, and making the chair back 3 and back support body 4 limits shake central shaft 7 with first simultaneously is center and toward hypsokinesis; Therefore, the 3rd shake central shaft 9 toward rising; Moreover, produce interlock with the 3rd rising of shaking central shaft 9, second shakes central shaft 8 is directed to sliding structure 10, and oblique upper moves backward; In other words because second shake central shaft 8 and the 3rd shake central shaft 9 rise so, seat support supporter 6 and seat support 5 also rise; Occupant's body weight becomes and suppresses the strength that seat support 5 rises, and the strength with respect to making the chair back 3 hypsokinesis becomes reaction force;

Sliding structure 10 is shaken central shaft 8 with second in the present embodiment, guides to the top of retreading point-blank; The 3rd shakes central shaft 9, and will to shake central shaft 7 with first be on the circumference at center, be moved to back side top, the pass that makes the increase part and second of hypsokinesis angle of the chair back 3 shake between the climb of central shaft 8 is certain, when the chair back 3 during toward hypsokinesis, till the initial stage to final period of hypsokinesis, second shakes the climbing of central shaft 8 all by homogenization; In other words, first, second and third shakes the position relation of

central shaft

7,8,9, and with the angle of inclination of sliding structure 10, when making back support body 4 toward hypsokinesis, second climbing that shakes central shaft 8 becomes homogeneous; Therefore, when the occupant toppled over the chair back 3 backward, reaction force can not have significantly variation midway, and can make the chair back 3 continue to fall with strength much at one backward, improves the comfort of chair;

In the present embodiment, first, second and third shakes position relation of

central shaft

7,8,9, with the angle of inclination of sliding structure 10 be example, make back support body 4 when the hypsokinesis, second climbing that shakes central shaft 8 becomes homogenization; In other words, when back support body 4 not under the state of hypsokinesis, from the side of chair, first shake central shaft 7 tiltedly on the position of about 40 degree in the place ahead, dispose the 3rd and shake central shaft 9, tiltedly go up on the position of spending in the place ahead about 7, dispose second central shaft 8; Moreover, from the side of chair, the position second shake central shaft 8 tiltedly on the position of about 10 degree in rear, dispose the 3rd and shake central shaft 9; Moreover from the side of chair, sliding structure 10 is toward tiltedly going up rears 55 degree that tilt approximately; From then under the kind state, back support body 4 is in case toward hypsokinesis, the 3rd shakes central shaft 9 promptly is moved in the position of spending in first oblique upward the place ahead about 60 of shaking central shaft 7, and second shakes central shaft 8 is moved to the position that first oblique upward the place ahead about 15 of shaking central shaft 7 is spent;

On the other hand, when standing up in case the occupant stops to lean against the action of the chair back 3, the coil spring 15 of reaction force structure 14 promptly extends, and back support body 4 is erected toward the place ahead;

Chair shakes central shaft 9 by sliding structure 10 guiding the 3rd and constitutes, and can allow the formation of chair oversimplify, and then the rising of controlling cost;

The Height Adjustment of seat support 5, under the state that action bars 20 is not operated because of occupant's relation, action bars 20 prolongs the 20a of portion toward descending, improve operating portion 20c because of making from body weight; Therefore, the protuberance 18a of gas spring 18 does not operate, and can't change its length, and the length of leg 1 is kept necessarily, and the height of seat support 5 is also kept necessarily;

In a single day the occupant lifts the operation panel 22 of action bars 20, and action bars 20 is that the center is shaken with the 20b of axle branch promptly, and operating portion 20c presses down, and is pressed into the protuberance 18a of gas spring 18; Therefore, the length adjustment of gas spring 18 is possible, and can change the length of leg 1, adjusts the height of seat support 5, and after occupant's hand was decontroled action bars 20, action bars 20 was promptly because of getting back to the not state of operation from body weight then.

As accompanying drawing 8 to shown in the accompanying drawing 16, be another embodiment of the present utility model, chair have on the pedestal 2 fixing back support body 4 on Lock structure 23, last Lock structure 23 possesses the fixedly rock body 45 of back support body 4, and the latch lever 46 that rock body 45 is shaken, and the operative configuration that makes latch lever 46 displacements; Latch lever 46 is given rock body 45 and is shaken displacement, and for example revolving body 44, and the control stick of latch lever 46 front and back displacements also can; The operation panel 47 that possesses operation revolving body 44;

Revolving body 44 is disposed between the side plate 2d and wallboard 2n in left side of pedestal 2, embeds among the axle center 48, and can't turn round relatively; Be provided with the spring 49 that revolving body 44 is pushed towards wallboard 2n between side plate 2d and the revolving body 44; Axle center 48 is supported on the side plate 2d of pedestal 2 in revolution mode freely, and is outstanding outward from left side side plate 2d, fitting operation plate 47 on this ledge;

Revolving body 44 is provided with armed lever 44a and brake 44b, and revolving body 44 is turned round towards upper lock position from primary position, and thus, revolving body 44 promptly allows inclined plane 51 foldings moving, the limit revolution of armed lever 44a limit towards wallboard 2n; At this moment, the part that inclined plane 51 is contacted from primary position armed lever 44a, the part of upper lock position armed lever 44a contact, 2d is side-prominent towards side plate, therefore, pushes down revolving body 44, and spring 49 is being compressed on the limit, and the limit is toward side plate 2d side shifting; Armed lever 44a is linking the latch lever 46 that can shake, and after in a single day revolving body 44 got back to primary position from upper lock position, brake 44b was to side plate 2d fine setting, and 44 revolutions excessively in case non-return is turned;

Rock body 45 comprises left side plate 45a, 45b, and the web 45c that links both, be provided with axial region 45d above left side plate 45a, the 45b, on the pedestal 2 top set recess 2p, insert axial region 45d, cover plate 52 is coated on top, and utilizes screw 53 that cover plate 52 is fixed in pedestal 2, and rock body 45 is the center with axial region 45d, in the mode that can shake, be installed on the pedestal 2, the upper end of rock body 45, the position is in the anterior position of axial region 45d; Therefore, when rock body 45 shakes in the wings, promptly rise in the upper end of rock body 45, embeds among the recess 4h of back support body 4, and under this kind state, the upper end of rock body 45 enters in the scope that back support body 4 retreats;

As shown in Figure 9, revolving body 44 is being got back under the state of primary position, and toward the place ahead pull-ups, shift out from the recess 4h of back support body 4 by the upper end of side plate 45a, 45b with rock body 45 for latch lever 46; In other words, shift out, therefore can make back support body 4 toward hypsokinesis because side plate 45a, 45b are hypsokinesis scopes by back support body 4; In other words, the chair back 3 can not be lockable;

On the other hand, as shown in Figure 10, after in a single day revolving body 44 returned back to upper lock position, latch lever 46 promptly allowed rock body 45 shake toward the rear, and therefore, the upper end of side plate 45a, 45b embeds among the recess 4h of back support body 4; In other words, side plate 45a, 45b have entered in the hypsokinesis scope of back support body 4, and make that the hypsokinesis of back support body 4 is forbidden; In other words, the chair back 3 is promptly locked;

In addition, in the present embodiment, the gripper shoe 4c of back support body 4 is divided into first half 4ca, latter half of 4cb, and first half 4ca is formed by a crooked sheet material, latter half of 4cb be with about

side plate

4a, 4b one-body molded; In other words, latter half of 4cb and

side plate

4a, 4b are formed with bending one sheet material; First half 4ca with about

side plate

4a, 4b be example, be fixed as one mode such as to weld.

Shown in accompanying drawing 7 and accompanying drawing 30,, fall into the recess of two ribbed arch 2i with the axle 20b of branch of the action bars 20 of height adjustment structure 19, simultaneously with the position between the ribbed arch 2i, with the mounted apparatus 21 of flat shape, by on sandwich, and, supporting control stick 20 with can rotating mode;

Above the seat support supporter 6, with seat support part 37 being installed is example, fixes by mode such as welding; With seat support part 37 being installed is example, is located at former and later two places, and it is fixing that seat support shell 38 is installed part 37 with seat support, for example with screw seat support 5 is installed on the seat support supporter 6; Moreover, above the seat support supporter 6, have to be used for installing the handrail that handrail uses accessory 39 is installed, for example fix with mode such as welding; In addition, even if there is handrail that accessory 39 is installed, also handrail can be installed;

As shown in Figure 17, sliding structure 10 can be non-rectilinear guiding, guides to downside in the mode of convex shaped arc shape; In other words, the sliding structure 10 of pedestal 2 also can be configured as the convex shaped arc shape of position at downside; In such cases, second climbing that shakes central shaft 8 becomes big at leisure along with the hypsokinesis of the chair back 3; When the occupant leans against on the chair back 3 and when making the chair back 3 toward hypsokinesis, the sensation of feeling at ease can be arranged, promote the comfort level when taking; At this moment, first, second and third shakes the position relation of

central shaft

7,8,9 and shape, the curvature of sliding structure 10, when making back support body 4 toward hypsokinesis, as long as second climbing that shakes central shaft 8 can slowly become greatly, does not promptly have special restriction;

Shown in accompanying drawing 18 and accompanying drawing 19, in the above-mentioned explanation, reaction force structure 14 be if can not adjust the reaction intensity of force of generation, as long as but can adjust and also can; Above the base plate 2a of pedestal 2, set screw 40 is set, by changing the front end overhang of set screw 40, adjusts the precompression of the coil spring 15 of reaction force structure 14, the reaction intensity of force that adjustment takes place, this kind mode also can; In such cases, above the handle 41, be provided with set screw 40, by the revolution operation of handle 41, but the overhang of set screw 40 is adjusted on stepless ground, just adjusts the reaction intensity of force; Perhaps, the cardinal extremity part at control stick 42 is provided with set screw 40, by the operation of shaking of control stick 42, in for example triphasic mode, adjusts the overhang of set screw 40, just the reaction intensity of force; In addition, on the base plate 2a of pedestal 2, mode such as to weld and so on, the base plate 43 that will have screw perforation 43a is fixing; Set screw 40 embeds screw perforation 43a, and from the perforation 2m of base plate 2a, the latch plate 16 of the downside of past reaction force structure 14 is outstanding;

To shown in the accompanying drawing 36, last Lock structure 23 also can adopt and be provided with spring portion in the mechanism, and can keep the type of ego function as accompanying drawing 31; On the latch lever 46 under the state that shaking of rock body 45 is restricted, when operative configuration 44 is operated, give strain, absorption is accumulated and is made rock body 45 shake the strength of displacement, simultaneously, shaking of rock body 45 in case after the possibility, also can design the strain portion that performance rock body 45 shakes strength, i.e. spring portion 56; In the present embodiment, the form of setting is the centre with latch lever 46, bends to U word shape, and strain portion 56 is set; But the shape of strain portion 56 be as long as can absorb displacement that rock body 45 is shaken, accumulate strength, and makes the rock body of accumulating 45 shake strength to bring into play and get final product;

In the present embodiment, the revolving body 44 of operative configuration is disposed between the left side side plate 2d and wallboard 2n of pedestal 2, embeds among the axle center 48, makes it and can not turn round; In other words, insert by the protuberance 48a that will be arranged on axle center 48 among the recess 44d of the perforation 44c be arranged on revolving body 44, revolving body 44 embeds axle center 48 with relatively can not rotating mode; Between the base plate 2a of revolving body 44 and pedestal 2, be provided with fixed part material 57, fixed part material 57 is with the forming materials of rubber-like resin and so on, by the mode of perforation 57c is set, and makes the protuberance 57d between recess 57a, the 57b, can be toward pressing down; To be arranged on the protuberance 44e of revolving body 44 bottoms, embed the recess 57a or the recess 57b of fixed part material 57, in this way, revolving body 44 is fixed on primary position or is fixed on upper lock position; By the mode of depressing protuberance 57d, and can make the protuberance 44e of revolving body 44, move between recess 57a, 57b, therefore, revolving body 44 promptly turns round between position and the upper lock position in the early stage; Fixed part material 57 embeds in the recess 2t of the base plate 2a that is arranged on pedestal 2;

Armed lever 44a be arranged on revolving body 44 above, the mode of latch lever 46 shaking is attached near the front end of armed lever 44a; The other end of connecting rod 46 in the mode that can shake, is attached at the side plate 45b of rock body 45;

Axle center 48 be inserted into the perforation 58 that is located on the pedestal 2 side plate 2d, with the perforation 61 that is located on the wallboard 2n, wallboard 2w is being supported this medial extremity to shake possible mounted apparatus 21 in the mode of turning round freely with action bars 20; Be provided with protuberance 48b above the axle center 48, protuberance 48b is inserted the recess 58a of the perforation 58 of side plate 2d, makes the angle of revolution in axle center 48 by this, protuberance 48b from the side of recess 58a in the scope of opposite side, promptly be that restriction allows revolving body 44 from primary position, return back in the scope of upper lock position; Pedestal 2 for example is a metal system, will be above this revolution range, make its inadequate rotating strength input to axle center 48, perforation 58 or recess 58a still can not enlarge, and can limit the angle of revolution in axle center 48, the revolution that not only can prevent revolving body 44 excessively or prevent that rock body 45 from shaking excessively, and the installation portion that can prevent the medial extremity in axle center 48 grades and causes load;

As shown in Figure 36, the medial extremity in axle center 48, be loaded into wallboard 2w section portion 59 above; Near the medial extremity in axle center 48, form groove 48c, on this groove 48c, the stator 21a of mounted apparatus 21 is inserted by the top, mode by this, by wallboard 2w and mounted apparatus 21 to turn round possible mode, the medial extremity in support axle center 48; Moreover, by mode, and can prevent axle center 48 extractions with stator 21a insertion groove 48c; The mounted apparatus 21 that action bars 20 is installed to shake possible mode is supporting axle center 48, not only can reduce number of spare parts, and can reduce packing engineering, and then reduces manufacturing cost;

Operation handle 60 is fixed on axle center 48 outboard ends, holds operation handle 60 and makes it revolution, can make 44 revolutions of operation revolving body; But if change into operation handle 60 control stick is installed on axle center 48, utilizes control stick to operate revolving body 44 and also can;

Above the back support body 4 of present embodiment, be provided with protuberance 4i, not under the state of hypsokinesis, rock body 45 is positioned at outside the swing range protuberance 4i at back support body 4, and back support body 4 is in case toward hypsokinesis, and rock body 45 promptly enters in the scope of shaking;

As shown in Figure 31, get back to the state of primary position when revolving body 44, latch lever 46 leads back to the place ahead with rock body 45, and the upper end of side plate 45a, 45b, from the recess 4h disengaging of back support body 4, therefore, can make back support body 4 toward hypsokinesis, in other words, the chair back 3 is in unlocked state;

As shown in Figure 32, on the other hand, in a single day revolving body 44 returns back to upper lock position, even latch lever 46 rock bodies 45 shake toward the rear, therefore, the upper end of side plate 45a, 45b embeds among the recess 4h of back support body 4, under this state, when wanting to allow back support body 4 toward hypsokinesis, back support body 4 is promptly run into rock body 45, has forbidden that back support body 4 is toward hypsokinesis, in other words, the chair back 3 promptly is in the state of locking;

When 44 of revolving bodies position in the early stage, rock body 45 is drawn back into the place ahead, and when making back support body 4 toward hypsokinesis, the protuberance 4i of back support body 4 has promptly entered the swing range of rock body 45; Under this state, control operation handle 60, make rock body 45 toward the rear is some shake after, rock body 45 is promptly met protuberance 4i, next rock body 45 promptly can't shake toward the rear; Under this state, further control operation handle 60, revolving body 44 is further turned round, the strain portion 56 of latch lever 46 is a strain, absorb the displacement intending rock body 45 is shaken, accumulated operating physical force, so, under this state, in a single day the back support body 4 of hypsokinesis before makes it to erect, protuberance 4i promptly breaks away from from the swing range of rock body 45, and rock body 45 is shaken toward the rear, originally the strain portion 56 of strain, original shape is got back on the limit, the operating physical force of originally accumulating is brought into play on the limit, and rock body 45 is shaken toward rears; Thus, under the state that the chair back 3 can't be locked,, rock body 45 is shaken, therefore, can prevent the breakage of formation portion material even go up latching operation; Moreover, even rock body 45 is in the state that can't shake, still may make revolving body 44 rotating operations, becoming under the stage that to shake, rock body 45 automatically shakes, and therefore, can not need to take notice of back support body 4 is operated toward hypsokinesis; Therefore, chair is also more followed one's bent in the use;

Lock structure 23 in the utilization, when making the chair back 3 be in locking state, in case the occupant is after the chair back, rock body 45 is shaken toward the rear, at side plate 45a, the upper end of 45b, under the state of the recess 4h of embedding back support body 4, when intending making back support body 4 toward hypsokinesis, the gripper shoe 4c of back support body 4 runs into rock body 45, therefore, gripper shoe 4c promptly becomes the form of pushing down rock body 45, and rock body 45 can't be withdrawn into the place ahead, under this state, control operation handle 60, when making revolving body 44 return back to primary position, strain portion 56 strains of latch lever 46 are inhaled the displacement that heart plan is shaken rock body 45, accumulate operating physical force; So, under this state, in a single day the occupant stops to lean against the chair back 3, gripper shoe 4c promptly leaves from rock body 45, and make rock body 45 be returned to the place ahead, and therefore, the strain portion 56 of script strain, the operating physical force that original shape limit performance is accumulated is originally got back on the limit, and rock body 45 is returned to the place ahead; Under the locking state that can't remove the chair back 3, remove operation even lock, rock body 45 is shaken, therefore can prevent the breakage of formation portion material; Moreover, even rock body 45 is in the state that can't shake, still may make revolving body 44 rotating operations, becoming under the stage that to shake, rock body 45 automatically shakes, and therefore, can not need to take notice of back support body 4 is operated toward hypsokinesis, therefore, chair is also more followed one's bent in the use.

To shown in the accompanying drawing 22, the seat of seat support supporter 6 holds on the accessory as accompanying drawing 20, and also available screw is seat support shell 38 fixedly, and in other words, the top configuration seat support supporter 6 of the recess 38a of seat support shell 38 uses screw 54 to fix both and also can;

Shown in accompanying drawing 23 and accompanying drawing 24, the seat of seat support supporter 6 holds on the accessory, and with screw fixedly seat support shell 38 time, the also available mode that welds and so on is installed accessory 39 with handrail, is fixed in seat support supporter 6; In other words, above the recess 38a of seat support shell 38, configuration seat support supporter when using screw 54 to fix both, also can be provided with handrail accessory 39 is installed, so that handrail to be installed;

To shown in the accompanying drawing 27, the seat of seat support supporter 6 holds on the accessory as accompanying drawing 25, the also available mode that welds and so on, and fixedly seat support is installed part 37, simultaneously seat plywood 55 usefulness screws is fixed in seat support installation part 37;

Shown in accompanying drawing 28 and accompanying drawing 29, also can prolong second shakes central shaft 8 and the 3rd and shakes central shaft 9, utilize the seat support reinforcement accessory of seat support supporter 6, binding second is shaken central shaft 8 and the 3rd and is shaken central shaft 9, simultaneously on seat support shell 38, form hook 38b and be hooked in second and shake central shaft 8 and the 3rd and shake central shaft 9, seat support shell 38 is assembled in seat support supporter 6.

Claims

1, a kind of Chair structure is characterized in that: comprise leg; Support the pedestal of leg; Be installed in the back support body on the chair back; Be installed in the seat support supporter on the seat support; Being provided with on pedestal retreats and link first of chair back supporter shakes central shaft; The position first shake central shaft the place ahead equal height or above, the seat support supporter shakes and is attached at second of pedestal and shakes central shaft; The position first and second shake between the central shaft, link this first and second shake the position of central shaft above more, back support body and seat support supporter are upper and lower to shaking binding, shake central shaft with the 3rd of the hypsokinesis interlock of back support body, rising, the 3rd shakes central shaft is linked to second and shakes central shaft; And make second sliding structure of shaking central shaft oblique upper guiding backward.

2, Chair structure according to claim 1 is characterized in that: described sliding structure is to shake central shaft with second, guides second structure that shakes central shaft with the mode of straight line or the circular-arc mode that is positioned at downside.

3, Chair structure according to claim 1 is characterized in that: described pedestal has the fixedly last Lock structure of back support body.

4, Chair structure according to claim 3 is characterized in that: the described Lock structure of going up has the fixedly rock body of back support body, is linked to the latch lever of this rock body, is linked to the operative configuration of this latch lever, and latch lever is provided with strain portion.