CN104661567B

CN104661567B - Chair arm component

Info

Publication number: CN104661567B
Application number: CN201380049111.5A
Authority: CN
Inventors: 罗伯特·J·拜蒂; 小理查德·N·罗斯兰; N·麦考恩; P·美杜
Original assignee: This Deere Koss Corp
Current assignee: This Deere Koss Corp
Priority date: 2012-09-20
Filing date: 2013-09-19
Publication date: 2018-07-13
Anticipated expiration: 2033-09-19
Also published as: CN106235713B; HK1206222A1; WO2014047255A3; WO2014047255A2; CA2881887A1; MY169026A; CN108784085B; CN108784085A; CN104661567A; JP6244364B2; CN106235713A; MX2022011894A; AU2013318083B2; JP2015529144A; AU2013318083A1; MX2015003446A

Abstract

A kind of chair assembly includes：Double leval jib component comprising first connecting rod, second connecting rod, third connecting rod and fourth link respectively pivotly couple each other, so that the double leval jib component includes the upper end that can be adjusted between the position risen and reduced；The arm of user is taken a seat with suitable for supporting thereon, and is supported on the armrest assembly of upper end of double leval jib component；Wherein the lower end of the double leval jib component is pivotably supported from arm support structure to make pivotable movement, so that the upper end of the double leval jib component can be moved in first position and between the second position of first position lateral outer side.

Description

Chair arm component

Technical field

The present invention relates to a kind of chair assembly more particularly to office chair arm components, can horizontally and vertically be conditioned, and And include the arm cap assembly pivotly and being linearly conditioned.

Invention content

It is an aspect of the present invention to provide a kind of chair assembly, it includes 4 link assemblies, it includes with first end and the The first connecting rod component at two ends, the second connecting rod component having a first end and a second end, third linkage component have first End, it is pivotally coupled to the first end of first connecting rod component so that around the first pivot point and second end, it is pivotly The first end of second connecting rod component is coupled to be rotated around second pivotal point and the 4th linkage component, with first end, It is pivotally coupled to the second end of first connecting rod component with around third pivot point and second end, its pivotly coupling The second end of second connecting rod component is bonded to around the 4th pivot point, wherein 4 link assembly includes lower end and upper end, can It is conditioned between the position risen in one and the position of a reduction.Chair assembly includes also armrest assembly, is adapted to support Take one's seat user arm on it, and be supported on the upper end of 4 link assemblies, tied wherein the lower end of 4 link assemblies is supported by arm Structure is pivotally supported, to be pivotally movable around the 5th pivotal point, so that the upper end of 4 link assemblies can be in first position and It is moved between two positions, the second position is located at the position of first position lateral outer side.

Another aspect of the present invention is to provide a kind of chair assembly, and it includes 4 link assemblies, it includes：First connecting rod Component carries first end, second end, and the cross-sectional configuration of U-shaped being arranged along its length；Second linkage component, carries First end, second end, and the cross-sectional configuration of U-shaped that is arranged along its length, and wherein first connecting rod component and second connecting rod component Cooperation is to form along the inner space that the length of the first and second linkage components is longitudinally extended；Third linkage component, has First end, it is pivotally coupled to the first end of first connecting rod component so that around the first pivot point and second end, it can pivot The first end of second connecting rod component is coupled to be rotated around second pivotal point with turning；And the 4th linkage component, have the One end, it is pivotally coupled to the second end of first connecting rod component so that around third pivot point and second end, it is pivotably Ground is coupled to the second end of second connecting rod component with around the 4th pivot point；Wherein 4 link assembly includes lower end and upper end, It is conditioned between its position that can be risen in one and the position of a reduction.Chair assembly also include armrest assembly, be adapted with Support take one's seat user arm on it, and be supported on upper end and the locked component of 4 link assemblies, it includes having the First locking on one surface couples, and the with multiple teeth second locking connection, those teeth correspond to 4 connecting rod and are located at rise Multiple upright positions between position and the position of reduction, wherein first and second locking connection can be relative to each other in a locking bit It sets and is moved between a unlocked position, in latched position, first surface is engaged at least one of which of multiple teeth, to prevent 4 connecting rods are conditioned between the position risen and reduced, and in unlocked position, first surface and the multiple tooth phase each other Every, thus allow 4 connecting rods to be conditioned between the position risen and reduced, and wherein first and second locking connection all have to In a few internally positioned space of substantial portion.

Yet another aspect of the present invention is to provide a kind of chair assembly, it includes：One arm support structure；Suitable for comfortable twelve Earthly Branches Support the armrest assembly of the arm for the user that takes one's seat on it；Arm support component, with the lower end supported by arm support structure, and branch Support the upper end of armrest assembly thereon, the position that the position and one that wherein arm support component can vertically rise in one vertically reduce It is conditioned between setting；With a locked component.Locked component includes：First locking connection, with first surface and multiple teeth it At least one；Second locking connection, it is another with its of first surface and multiple teeth, and can be in a latched position and one It is moved between unlocked position, in latched position, first surface is engaged at least one of which of multiple teeth, is supported with preventing arm Component is conditioned between the position risen and reduced, and in unlocked position, first surface is separated by with the multiple tooth, Thus arm support component is allowed to be conditioned between the position risen and reduced；Actuation linkages are operationally locked with first Connection couples and suitable for moving between the first and second positions, and in first position, the first locking connection is coupled by actuator Latched position is moved to, in the second position, the first locking connection moves to unlocked position by actuator connection；And join with actuator Connect the actuator component being operatively coupled, wherein at least part of actuator component can be taken one's seat user's actuating by one, It is moved to allow user that actuator is connected between the first and second positions.

Another aspect of the present invention is a kind of armrest assembly for office chair.Armrest assembly includes being mounted on cushion External component thereon, and be configured to be fixed to the internal part of office chair structure.Internal part, which has, to be provided thereon Tooth.Armrest assembly further includes upper and lower portion component, they extend and it is pivotly mutual between inside and outside component Connection is to form one 4 connecting rods.Armrest assembly further includes height of the vertical adjusting lock set to lock cushion relative to internal part. Vertical adjusting lock set include a moveable releasing parts, and when the releasing parts moves in locking with unlocked position it Between the actuator component that shifts.Actuator component limits a cardinal extremity.Vertical adjusting lock set further includes moveable locking member, With with teeth, they are selectively engaged the tooth on the internal part of 4 connecting rods for it.Actuator component is biased towards lock by one spring Positioning is set, and also by the tooth bias of pivotable locking member toward the engagement being detached from the tooth on the internal parts of 4 connecting rods.It causes First concave portion of the cardinal extremity shift-in locking member of dynamic device component, to allow the tooth of locking member to move to be detached from and 4 connecting rods The engagement of the tooth of internal part.Armrest assembly further includes the second lock, and the second concave portion is locked with one in locking member, when When downward power is applied to cushion, the second concave portion receives the end of actuator component and prevents the movement of locking member.

Yet another aspect again of the present invention is to provide a kind of chair assembly, and it includes including being support configured to use of taking one's seat The seat support structure of the seat support surface of person on it including be used to support the arm for the user that takes one's seat thereon arm support The armrest assembly and arm support component on surface, have arm support component is supported in it is higher than seat support surface vertical high The upper end of degree and a lower end, it includes the one of selected of pivot bosses and pivot hole.Chair assembly also includes arm Support construction comprising pivot bosses and pivot hole it is another, wherein pivot bosses are received in pivot hole with can pivot Turn ground support arm support component to be rotated between first position and the second postion around a pivotal point, pivot bosses have cone Shape, and wherein the hole has coniform shape closely corresponding with the shape of pivot bosses.

Another aspect of the present invention is to provide a kind of chair assembly, it includes：Arm support component with top and bottom； Armrest assembly is adapted to support the arm for the user that takes one's seat on it and be supported on the upper end of arm support component；And arm Support construction is pivotally supported arm support component to be pivotally displaced around a substantially perpendicular axis, so that the arm supports The upper end of component can be pivoted around the substantially perpendicular axis between first position and the second position, and the second position is located at first position The position of lateral outer side.Chair also includes seat support structure comprising is support configured to the seat of user on it of taking one's seat Position support surface, wherein the seat support surface includes longitudinal axis, and the upper end of wherein arm support component is supported from the seat The axis of the longitudinal axes parallel on surface is displaced outwardly greater than or equal to about 22 °, and wherein arm support component upper end from the seat The axis of the longitudinal axes parallel of support surface is moved inward greater than or equal to about 17 °.

By reference to following specification, claim and attached drawing, those skilled in the art will be further understood that and recognize Know these and other features of the invention, advantage and purpose.

Description of the drawings

Fig. 1 is the front perspective view for implementing the chair assembly of the present invention；

Fig. 2 is the rear perspective view of chair assembly；

Fig. 3 is the side view of chair assembly, shows chair assembly in the position of reduction, and raised position shown in dotted line It sets, and shows seat assembly in the position of retracted position and expansion shown in dotted line；

Fig. 4 is the side view of chair assembly, shows chair assembly in stand up position, and reclined position shown in dotted line；

Fig. 5 is the exploded view of seat assembly；

Fig. 6 is the enlarged perspective of chair assembly, and wherein a part for seat assembly is removed to show spring supporting group Part；

Fig. 7 is the front perspective view of backrest module；

Fig. 8 is the side view of backrest module；

Fig. 9 A are the exploded front perspective views of backrest module；

Fig. 9 B are the exploded rear perspective views of backrest module；

Figure 10 is the enlarged perspective of the region X of Fig. 9 A；

Figure 11 is the enlarged perspective of the region XI of Fig. 2；

Figure 12 is sectional view of the upper backrest pintle assembly along the XXII-XXII lines of Fig. 7；

Figure 13 A are the exploded rear perspective views of upper backrest pintle assembly；

Figure 13 B are the exploded front perspective views of upper backrest pintle assembly；

Figure 14 is the enlarged perspective of the region XIV of Fig. 9 B；

Figure 15 A are that a comfortable component and one lean on the enlarged perspective of waist component；

Figure 15 B are comfortable component and the rear perspective view by waist component；

Figure 16 A are the front perspective views of a pawl component；

Figure 16 B are the rear perspective views of pawl component；

Figure 17 is the perspective partial section view of the line XVIII-XVIII along Figure 15 B；

Figure 18 A are the perspective views of backrest module, wherein a part for the comfortable component is cut out；

Figure 18 B are the decomposition perspective views of a part for backrest module；

Figure 19 is that a control input module supports the perspective view of seat support plate on it；

Figure 20 is the perspective view for controlling input module, and some of which element is removed to show inside it；

Figure 21 is the exploded view for controlling input module；

Figure 22 is the side view for controlling input module；

Figure 23 A are the front perspective views of a backrest supporting structure；

Figure 23 B are the decomposition perspective views of backrest supporting structure；

Figure 24 is the side view of the chair assembly, shows its multiple pivotal point；

Figure 25 is the side perspective view of control assembly, shows multiple pivotal points associated therewith；

Figure 26 is the sectional view of chair, shows backrest in stand up position, is set wherein being set at a neutrality by waist adjusting It is fixed；

Figure 27 is the sectional view of chair, shows backrest in stand up position, wherein being set to a straight configuration by waist portions；

Figure 28 is the sectional view of chair, shows backrest hypsokinesis, wherein being adjusted to a neutral position by waist；

Figure 29 is in the sectional view of the chair of reclined position, wherein being adjusted to a straight configuration by waist；

Figure 29 A are the sectional views of chair, show that backrest hypsokinesis, middle casing are set to maximum arc by waist portions Degree；

Figure 30 A are the exploded views of a moment arm displaceable member；

Figure 30 B are the exploded views of moment arm displacement drive component；

Figure 31 is the cross-sectional perspective view of moment arm displaceable member；

Figure 32 is the plan view from above of multiple controls connecting rods；

Figure 33 A are the side perspective views of control assembly, and wherein moment arm displacement member is in low-tension position, and chair assembly is straight Vertical position；

Figure 33 B are the side perspective views of control assembly, and wherein moment arm displacement member is in low-tension position, and chair assembly is rear Incline position；

Figure 34 A are the side perspective views of control assembly, and wherein moment arm displacement member is in high tension position, and chair assembly is straight Vertical position；

Figure 34 B are the side perspective views of control assembly, and wherein moment arm displacement member is in high tension position, and chair assembly is rear Incline position；

Figure 35 is the chart of inclination after the torque under the low setting with high-tension is corresponding；

Figure 36 is the perspective view of a direct drive component, and wherein seat support plate is decomposed from it；

Figure 37 is the decomposition perspective view for directly driving component；

Figure 38 is the perspective view of a vertical height control assembly；

Figure 39 is the side view of vertical height control assembly；

Figure 40 is the side view of vertical height control assembly；

Figure 41 is the anterior elevational view in the section of the first input control component；

Figure 42 A are the decomposition views of a control input module；

Figure 42 B are the enlarged perspectives of the clutch components of the first control input module；

Figure 42 C are the decomposition views for controlling input module；

Figure 43 is the side perspective view of variable backrest control assembly；

Figure 44 is the perspective view of an arm component；

Figure 45 is the decomposition perspective view of arm component；

Figure 46 is the side view of the arm component in raised position, wherein the position of decline shown in dotted line；

Figure 47 is the partial cross-sectional view of arm component；

Figure 48 is the plan view from above of chair assembly, shows arm component in in-line position, and angulation shown in dotted line The position of degree；

Figure 49 is the isometric view of arm component comprising a vertical height adjusts lock；

Figure 50 is the isometric view of arm component comprising a vertical height adjusts lock；

Figure 51 is the isometric view of arm component comprising a vertical height adjusts lock；

Figure 52 is the plan view from above of the chair assembly, is shown in the armrest assembly in in-line position, and with dotted line The position of rotation is shown, and is shown in retracted position, and the position of expansion shown in dotted line；

Figure 53 is the decomposition perspective view of armrest assembly；

Figure 54 is the sectional view of armrest assembly；

Specific implementation mode

For purpose described herein, term "upper", "lower", " right side ", " left side ", " rear ", " preceding ", " vertical ", "horizontal" It should be related to the present invention oriented such as Fig. 1 with their derivative words.However, it should be understood that the present invention can take various replace The orientation and sequence of steps in generation, unless clearly there is opposite regulation.It will also be appreciated that being shown in the accompanying drawings, and said in following Specific equipment described in bright book and technique are the exemplary embodiments of concept of the invention defined by the attached claims. Therefore, it is not considered as restrictive, removes with the relevant specific dimension of presently disclosed embodiment and other physical characteristics It is clearly stated in non-claimed in this way.The various elements of presently disclosed embodiment can be described as each other operationally Coupling, including element directly or indirectly coupled to each other.In addition, " chair " word used herein above covers various seats Position arranges, including office chair, car seat, household seat, stadium seat, movie seat etc..

Reference label 10 (Fig. 1 and 2) generally indicates the chair assembly for implementing the present invention.In the example in the figures, chair Sub-component 10 includes the base assembly 12 of the foot wheel for the floor surface 13 for abutting support, is supported by the base assembly 12 of foot wheel Control or support component 14, the respectively seat assembly 16 that is operationally coupled with control assembly 14 and backrest module 18, and A pair of of arm component 20.Control assembly 14 (Fig. 3) is operationally coupled with base assembly 12, so that the seat assembly 16, backrest group Part 18 and arm component 20 can be vertically conditioned between the position A reduced completely and the position B risen completely, and around vertical Axis 21 is pivoted with direction 22.Seat assembly 16 is operationally to be coupled with control assembly 14, so that 16 phase of seat assembly It can be between fully retracted position C and fully expanded position D by longitudinally adjust for the control assembly 14.(the figure of seat assembly 16 4) and backrest module 18 operationally with control assembly 14 and with it is coupled to each other so that backrest module 18 is can be completely erected in one Moved between the complete reclined position F of position E and one, and further make seat assembly 16 can in a completely erected position G and It is moved between one complete reclined position H, respectively correspond tos the completely erected position E and complete reclined position F of backrest module 18.

Base assembly 12 includes multiple pedestal arms 24, radially extends and is separated by around hollow central column 26, central rods Receive pneumatic linear actuator 28 wherein.Each pedestal arm 24 is supported on the top of floor surface 13 by a relevant castor assembly 30. Although the base assembly 12 is shown as including a multi-arm pedestal component, indicate here, other suitable support constructions may be used, Including but not limited to fixed column, the arrangement of multiway, vehicle seat support component, etc..

The seat assembly 16 (Fig. 5) includes the seat support plate 32 of relative stiffness, is had：Leading edge 34；Rear 36； And a pair of of C-shaped guide rail 38, which defines the lateral margins of seat support plate 32, and extend between leading edge 34 and rear 36.Seat Component 16 further includes a pliable resilient seat outer housing 40, has a pair of retrousse lateral part 42 and one retrousse Rear portion 44 cooperates to form a shape being generally concaved set up.In the example in the figures, seat shell 40 are made of opposite pliable material such as thermoplastic elastomer (TPE) (TPE).In assembling, seat shell body 40 is fixed and is sandwiched in Between seat support plate 32 and a plastics, pliable resilient seat disk 46, seat disk is fixed to by multiple machanical fasteners Seat support plate 32.Seat disk 46 includes leading edge 48, rear 50, the lateral margin 52 extended between leading edge 48 and rear 50, top table Face 54 and bottom surface 56, they coordinate to form a shape being generally concaved set up.In the example in the figures, seat disk 46 include multiple slots 58 being longitudinally extended, and is extended forward from rear 50.Slot 58 is worked in coordination in-between to limit multiple fingers Shape part 60, each finger 60 are individually pliable, elastic.Seat disk 46 further includes the long hole of multiple transversal orientations 62, it is located near leading edge 48.Hole 62 is worked in coordination to increase the whole mutabililty of seat disk 46 in its region, and is especially permitted Perhaps a front part 64 of seat disk 46 is bent relative to the backward part 68 of seat disk 46 in vertical direction 66, and following article is into one What step discussed.Seat assembly 16 further includes the foam on the top surface 54 for rest on seat disk 46 and being absorbed in seat shell body 40 The upper surface 76 of cushion components 70, fabric cover for seat 72 (Fig. 1 and 2) and cushion components 70.One spring supporting component, 78 (Fig. 5 With 6) be fixed to seat assembly 16, and the front part 64 suitable for supporting seat disk 46 pliablely, with curved in vertical direction 66 It is bent.In the example in the figures, spring supporting component 78 includes a supporing shell 80, and it includes foams, and has and define one The lateral part 82 of upwardly recessed arcuate shape.Spring supporting component 78 further includes the attachment component 84 of a relative stiffness, It is laterally extended between the lateral part 82 of supporing shell 80, and positioned at the front part 64 of supporing shell 80 and seat disk 46 Between.Supporing shell 80 and attachment component 84 are fixed to the front part 64 of seat disk 46 by multiple machanical fasteners 86.Spring Support component 78 further includes a pair of of cantilever spring 88, respectively has one that the corresponding hole 92 by attachment component 84 receives Distally 90, and it is fixed to the proximal end 94 of seat support plate 32, so that the distal end 90 of each cantilever spring 88 can be in Vertical Square To 66 bendings.A pair of of linear bearing 96 is fixedly attached to attachment component 84 and is aligned with its hole 92, so that linear bearing 96 slideably received within a corresponding cantilever spring 88 distal end 90.In operation, when the user to take one's seat is in seat assembly 16 On rotate forward and when applying downward power to its leading edge, cantilever spring 88 is worked in coordination to allow the front 64 of seat disk 46, The more generally useful entire front part of seat assembly 16 is bent with vertical direction 66.

Backrest module 18 (Fig. 7-9B) includes back frame component 98 and the back-supported component 99 that is supported by it.Seat back frame Frame component 98 includes generally a generally rigid material, such as metal, and includes a top-frame portion being laterally extended Divide 100, the side frame portions 104 of the bottom frame part 102 and a pair of curved being laterally extended, they are in top frame Extend between part 100 and bottom frame part 102, and coordinate to limit opening 106 with it, is tieed up with relatively large top The lower part dimension 110 of degree 108 and relative narrowness.

Backrest module 18 further include one it is pliable ground elasticity plastics coupler body 112, with upper part 114, under Portion part 116, one for extend between upper part 114 and low portion 116 lateral margin 118, a forward surface 120 and one Surface 122 backward, wherein width of the width of upper part 114 generally than low portion 116 is big, and low portion 116 reduce downwards the configuration generally to follow the rear portion of frame assembly 98 to face aspect.One lower part strengthening part 115 is attached to The hook 117 (Fig. 9 A) of the low portion 116 of coupler body 112.Strengthening part 115 includes multiple protrusions 113, engages ribs Item 134 is to prevent lower part strengthening part 115 relative to the movement of the side of coupler body 112 to the other side.Discussed below, reinforce Component 115 is pivotable by the low portion 116 of backrest controller control 342 (Figure 26) and coupler body 112 in pivotal point or axis 346 Ground is connected with each other.

Coupler body 112 further includes multiple integrally moulded, hooks 124 (Figure 10) for forwardly and upwardly extending, they in by The periphery of the upper part 114 of backpanel housing is separated by.Centre is vertically located at the upper of coupler body 112 by waist portions 126 Between portion part 114 and low portion 116, and include multiple slots 128 being laterally extended, cooperation is therebetween more to be formed A rib 130 being laterally extended.Slot 128 cooperates with each other to provide additional mutabililty as coupler body 112 in its position.It is a pair of To transverse ribs 130 and vertically extending rib 132 coordinate, the latter is integrally formed with the former, and is set to the former about Lateral intermediate point.When backrest module 18 moves on to reclined position F from stand up position E as described below, in coupler body 112 When intermediate position 126 is bent, vertical ribs 132 effect with transverse ribs 130 are linked together and are reduced the latter it Between vertical extension.Coupler body 112 further includes multiple reinforcement ribs 134 being laterally separated by, in low portion 116 Vertical length along coupler body 112 between middle section 126 is longitudinally extended.Here it indicates, the depth edge of every rib 134 Every rib 134 is deepened from middle section 126, thus the integral rigidity of coupler body 112 along rib length from middle section 126 increase toward low portion 116.

Coupler body 112 further includes that a pair extends back, and integrally moulded pivot bosses 138 form backrest on one A part for pintle assembly 140.Back pivot component 140 (Figure 11-13B) includes the pivot bosses 138, one of coupler body 112 To cover member 142, a race components 144 and the mechanical fastening component 146 around respective pivot bosses 138.Each pivot Boss 138 includes a pair of sidewalls 148 and a spill seat surface 150 backward, has to extend through and therein vertically prolong Long pivot channel 152.Each cover member 142 is shaped to be closely received corresponding pivot bosses 138, and includes corresponding to side The bearing surface 156 of multiple side walls 154 of wall 148 and a spill backward comprising extend through therein one and vertically prolong Long pivot channel 143, and it is suitable for being aligned with the slot 152 of corresponding pivot bosses 138.Race components 144 include along backrest The central part 158 that the top frame part 100 of frame assembly 98 is laterally extended and is abutted with it, and a pair positioned at its end The bearing surface 160 of arc.Specifically, central part 158 includes first part 162 and second part 164, wherein first part 162 abut the front surface of top frame part 100, and second part 164 abuts the top surface of top frame part 100.Each Bearing surface 160 extends through hole 166 therein including one, is aligned and the corresponding set of 98 one of back frame component Cartridge unit 168.

In assembling, cover member 142 is determined around the positioning of corresponding pivot bosses 138 of coupler body 112 and operationally Between coupler body 112 and race components 144, so that bearing surface 156 is sandwiched in the seat of corresponding pivot bosses 138 Between surface 150 and a bearing surface 160.Mechanical fastening component 146 includes respectively a bolt 172, by the circle of bearing washer 176 The abutment surface 174 on side be fixed on the sliding engagement of the inner surface of corresponding pivot bosses 138 178, and with coupler body 112 Corresponding sleeve part 168 be threadedly engaged.In operation, upper back pivot component 140 allows 99 phase of back-supported component Back frame component around the pivot 182 (Fig. 7) is pivoted with direction 180 (Fig. 8).

Back-supported component 99 (Fig. 9 A and 9B) further includes the comfortable component 184 (Figure 15 A and 15B) of pliable ground elasticity, It is attached to coupler body 112 and slidingly supports one and lean on waist component 186.Comfortable component 184 includes upper part 188, lower part Part 190, a pair of of lateral part 192, front surface 193 and rear surface 195, wherein upper part 188, low portion 190 and side The cooperation of portion part 192 is received by waist component 186 with forming hole 194 in wherein.As most clearly showed that in Fig. 9 B and 14, Comfortable component 184 includes the multiple box-like male parts 196 being separated by around the periphery on top 188, they from rear surface 195 backward Extend.Each box-like male part 196 includes a pair of sidewalls 198 and roof 200, they coordinate to form an inner space 202.One Bar 204 extends between side wall 198, and is separated from rear surface 195.In assembling, comfortable component 184 (Figure 12-14) quilt It is fixed to coupler body 112, this is by being directed at and being inserted perpendicularly into each box-like male part by the hook 124 of coupler body 112 In 196 inner space 202, until hook 124 engages corresponding bar 204.Here it indicates, 120 He of front surface of coupler body 112 The rear surface 195 of comfortable component 184 is being no hole or hole close to the hook 124 and 196 place of box-like male part, to Smooth front surface 193 is provided and increases the comfort of the user to take one's seat.

Comfortable component 184 (Figure 15 A and 15B) includes casing 206 that is integrally moulded, being longitudinally extended, from rear surface 195 extend back, and the cross-sectional configuration with rectangle.Include one lateral being forward concave surface and being vertically forward by waist component 186 Convex surface, pliable, elastic main part 208 and the support section with its one upwardly extended from main part 208 210.In the example in the figures, main part 208 is shaped to cause the main part vertically along its reduced height so that it is big The profile and shape of the hole 194 of comfortable component 184 are followed on body.Support section 210 is slideably received in comfortable component In 184 casing 206, so that relative to the remaining part of back-supported component 99 being vertically adjustable in complete by waist component 186 Between the position I of reduction and the position J risen completely.Pawl component 212 is selectively engaged the length along support section 210 The multiple holes 214 being separated by rise by waist component 186 in the position I reduced completely and completely to releasedly fixed Position J between select upright position on.Pawl component 212 (Figure 16 A and 16B) includes a housing parts 216, is had The engagement lug 218 deviated backward positioned at its end and from the outer surface of housing parts 216 220.The finger-like of one pliable ground elasticity Part 222 is centrally placed in housing parts 216, and includes a pawl 224 to extend back.

In assembling, pawl component 212 (Figure 17) is located in the hole 226 in the upper part 188 of comfortable component 184 It is interior, so that the outer surface 220 of the housing parts 216 of pawl component 212 and the front surface 193 of comfortable component 184 are coplanar, and with The engagement lug 218 of housing parts 216 is caused to abut the rear surface 195 of comfortable component 184.It then will be by the support of waist component 186 Part 210 is positioned in the casing 206 of comfortable component 184, so that casing 206 is slidably in wherein, and pawl 224 is selection Property can be engaged with hole 214, thus allow position of the user optimization by waist component 186 relative to whole back-supported component 99 It sets.Specifically, it includes a pair of outwardly extending, with its one (figure of handle portion 251 to lean on the main part 208 of waist component 186 18A and 18B), respectively there is C-shaped cross-sectional configuration, it limits raceway groove 253 in wherein, and raceway groove surrounds the corresponding of comfortable component 184 Lateral margin 192 and coupler body 112 lateral margin 118 and along they be oriented to.

In operation, user is by catching one of handle portion 251 or two, and along comfortable component 184 Phase of the waist component 186 relative to coupler body 112 is leaned on to adjust with vertical direction sliding handle component 251 with coupler body 112 To upright position.Stopping tab 228 is integrally formed therewith in distally 230, and from its offset with comfortable engagement component 184 The end wall of casing 206 leans on the support section 210 of waist component 186 relative to the casing 206 of comfortable component 184 to limit Stroke vertically downward.

Backrest module 99 (Fig. 9 A and 9B) further includes the cushion components 252 with upper part 254 and low portion 256, Wherein low portion 256 is reduced along its vertical length to correspond to global shape and the contracting of coupler body 112 and comfortable component 184 It is small.

Seat assembly 16 and backrest module 18 are operably coupled to control assembly 14 (Figure 19) and control input module 260, and controlled by them.Control assembly 14 (Figure 20-22) includes shell or base construction or ground structure 262 comprising antetheca 264, rear wall 266, a pair of sidewalls 268 and bottom wall 270, they are formed integrally with each other and are coordinated with one upward opening of formation Inner space 272.Bottom wall 270 including one be placed in one centre, for allowing cylinder component 28 (Fig. 3) to pass through to connect as described below Receive its hole 273.Base construction 262 further defines the pivotal point 274 with front, the pivot in lower section and front above Turning point 276 and above with the pivotal point at rear 278, wherein control assembly 14 further include support seat assembly 16 seat support Structure 282.In the example in the figures, seat support structure 282 has essentially u-shaped plane configuration comprising a pair is forward The arm section 284 of extension includes respectively a pivot hole 286 for being located at front, by pivot shaft 288 by pivotly It is fixed to base construction 262, to move pivotally around the pivotal point 274 of top and front.Seat support structure 282 further includes rear portion Part 290, it is laterally extended between arm section 284 and coordinates with it to form inner space 292, and base construction 262 is connect It receives in the inner.Rear portion 290 includes a pair of arm installation section 294 to extend back, and arm component 20 is attached as described below Thereon.Seat support structure 282 further includes control input module installation section 296, and control input module 260 is installed in it On.Seat support structure 282 further includes a pair of of bush assembly 298, they coordinate to limit pivotal point 300.

Control assembly 14 further includes a backrest supporting structure 302, with essentially u-shaped plane configuration and includes a pair The arm section 304 extended forward includes respectively a pivot hole 305 and is pivotally coupled to base by pivot shaft 307 Holder structure 262, so that backrest supporting structure 302 is wound on lower section and the pivotal point 276 in front pivots.Backrest supporting structure 302 wraps Rear portion 308 is included, it coordinates with arm section 304 to limit inner space 310, receives base construction 262 in wherein.Backrest Support construction 302 further includes a pair of pivot hole 312 arranged along its length, they coordinate to limit pivotal point 314.Here it notes Bright, in some cases, at least part of back frame component 98 can be included as one of backrest supporting structure 302 Point.

Control assembly 14 further includes multiple controller controls 316, they respectively have pivotly is coupled by a pair of pivot pin 321 First end 318 to seat support structure 282 to be pivoted around pivotal point 300, and be pivotally coupled to by a pair of pivot pin 324 Second end 322 of the corresponding pivot hole 312 of backrest supporting structure 302 to be pivoted around pivotal point 314.In operation, work as chair When sub-component is by migration reclined position, controller control 316 controls seat support structure 282 relative to backrest supporting structure 302 It moves, specifically the hypsokinesis rate of the former opposite the latter, as described below.

As most clearly showed that in Figure 23 A and 23B, the bottom frame part 102 of back frame component 98 be configured to through Backrest supporting structure 302 is connected to by a Quick Connect Kit 326.Each arm section 304 of backrest supporting structure 302 includes One positioned at its proximal end 330 installs hole 328.In the example in the figures, Quick Connect Kit 326 includes back frame component 98 Bottom frame part 102 configuration with including the male part part 332 that extends forward of a pair, the cooperation of male part part 332 with The raceway groove 334 between them is limited, the proximal end 330 of the reception arm section 304 of raceway groove 334 and rear portion 308 are in the inner.Each Male part part 332 includes a sleeve 336 extended downwardly, is directed at a corresponding hole 328 and is received in wherein.Then Machanical fastener (such as screw 338) is screwed into the screw thread of sleeve 336, thus back frame component 98 is allowed to quick connect to Control assembly 14.

As most clearly showed that in Figure 24, base construction 262, seat support structure 282, backrest supporting structure 302 and control 316 cooperation of system connection is to form one 4 link assemblies, support seat assembly 16, backrest module 18 and arm component 20.For the ease of With reference to being called as follows with the associated associated pivot component of 4 link assemblies of control assembly 14：Base construction 262 and pedestal It is known as the first pivotal point 274 with the pivotal point in front 274 above between support construction 282；In base construction 262 and backrest It is known as second pivotal point 276 in the pivotal point 276 in lower section and front between support construction 302；In the first of controller control 316 Pivotal point 300 between end 318 and seat support structure 282 is known as third pivotal point 300；And in the second of controller control 316 Pivotal point 314 between end 322 and backrest supporting structure 302 is known as the 4th pivotal point 314.In addition, the places shown in dotted line Figure 24 The component of chair assembly 10 in reclined position, wherein the chair of reclined position reference label with " ' " mark.

In operation, control assembly 14 4 link assemblies coordinate in backrest module 18 after stand up position E is moved into Incline position F when by seat assembly 16 from stand up position G hypsokinesis to reclined position H, wherein the tops of position E and F in fig. 24 and Lower part shows, upper part and low portion as single piece the hypsokinesis of backrest module 18.Specifically, it controls Connection 316 is configured and is coupled to seat support structure 282 and backrest supporting structure 302, thus when backrest supporting structure 302 around When second pivotal point 276 pivots, seat support structure 282 is pivoted around the first pivotal point 274.Preferably, seat support structure 302 Rate around the rotation of the first pivotal point 274 be the rate that backrest supporting structure 302 is rotated around second pivotal point 276 about 1/3 to Between about 2/3, rate that more preferably seat support structure is rotated around the first pivotal point 274 is backrest supporting structure 302 around the About half of the rate of two pivotal points 276 rotation, and most preferably, when backrest module 18 from completely erected position E hypsokinesis to Angle γ is about 18 °, until when complete reclined position F, seat assembly 16 is from completely erected position G hypsokinesis to angle beta About 9 °, until complete reclined position H.

As most clearly showed that in Figure 24, no matter when chair assembly 10 be in completely erected position or completely hypsokinesis position When setting, the first pivotal point 274 is all the top and front for being located at second pivotal point 276, because when seat assembly 10 is by hypsokinesis, Base construction 262 is kept fixed relative to the floor surface 13 of support.During the entire reclining movement of chair assembly 10, Third pivotal point 300 be maintained at behind the first pivotal point 274 and its relative vertical elevational below.Here it is further noted that In the entire reclining movement of chair assembly 10, the distance between the first pivotal point 274 and second pivotal point 276 are remained above The distance between three pivotal points 300 and the 4th pivotal point 314.As most clearly showed that in Figure 25, when chair assembly 10 has been in When full stand up position, the one of controller control 316 central axis 340 being longitudinally extended forms sharp angle α with seat support structure 282, And when chair assembly 10 is in complete reclined position, they then form sharp angle α '.Here it indicates, when chair assembly 10 is in it When between completely erected and complete reclined position by movement, the central axis 340 of controller control 316 will not rotate more than and seat The orthogonal alignment of support construction 282.

With further reference to Figure 26, backrest controller control 342 includes front end, it is pivotly connected in the 5th pivotal point 344 It is connected to seat support structure 282.The rear end 345 of backrest controller control 342 is connected to coupler body in the 6th pivotal point 346 112 low portion 116.6th pivotal point 346 is optional, and backrest controller control 342 and coupler body 112 also can be by rigidity Ground is fixed to one another.In addition, pivotal point 346 may include a retainer, 342 opposite coupler body of limitation backrest controller control 112 the first and/or second rotation direction rotation.For example, referring to Figure 26, pivotal point 346 may include retainer, allow The low portion 116 of coupler body 112 is rotated clockwise relative to controller control 342.If tending to reduce dimension D₁Backward/ What horizontal force was applied to coupler body 112 leans on waist, and above-mentioned configuration allows to become relatively to put down by waist.However, retainer can by with It sets to prevent the low portion 116 of coupler body 112 from being rotated in a counter-clockwise direction (Figure 26) relative to controller control 342.This leads It causes when upper part in chair hypsokinesis of the user by pushing backrest module 18, under connection 342 and coupler body 112 Portion part 116 is rotated with angular speed identical with backrest module 18.

One cam connection 350 is also pivotably connected to seat support structure 282 with around pivotal point or the rotation of axis 344. Lower cam surface 352 of the cam connection 350 with a bending, slidably engages and is formed in backrest supporting structure 302 Cam face 354 upward.A pair of of torque spring 356 (referring also to Figure 18 A and 18B) is to tend to increase angleThe side of (Figure 26) Backrest controller control 342 and cam are rotationally coupled 350 biass by formula.Those torque springs 356, which generate, to be tended to counterclockwise Direction (Figure 26) rotate controller control 342 and simultaneously in a clockwise direction (Figure 26) rotation cam connection 350 power.Therefore, should A little torque springs 356 tend to increase the angle between backrest controller control 342 and cam connection 350In seat support structure What retainer 348 on 282 limited backrest controller control 342 rotates counterclockwise to position shown in Figure 26.This power can also incite somebody to action Controller control 342 is biased into retainer in a counterclockwise direction.

As discussed above, coupler body 112 is pliable, especially the back frame structure 98 compared to rigidity.Together Sample is as discussed above, and back frame structure 98 is rigidly attached backrest supporting structure 302, and therefore with back rest supports knot Structure 302 pivots.The power generated by torque spring 356 pushes up the low portion 116 for pressing against coupler body 112.Same institute as above It discusses, those slots 128 in coupler body structure 112 generate in coupler body 112 by waist supporting part 126 additional easy Curved property.The power generated from torque spring 356 also tend to be led to coupler body 112 by waist portions 126 to front curve so that leaning on waist Part 126 has the radian of bigger than mutually abutting the region of waist portions 126.

As discussed above, it is vertically adjustable by the position of waist component 186.Vertical adjustment by waist component 186 is also adjusted The mode for the bending of the whole coupler body 112 during back hypsokinesis/bent.In fig. 26, it is transferred to one by waist component 186 Intermediate or neutral position, so that the radian by waist portions 126 of coupler body 112 is also intermediate or neutral.With further reference to Figure 27, if the upright position by waist component 186 is conditioned, angleIt is reduced, and the radian by lumbar region domain 126 is subtracted It is small.As shown in figure 27, this also leads to angleBecome larger and the global shape of coupler body 112 becomes relatively straight.

With further reference to Figure 28, if the height by waist component 186 is set at by-level (that is, such as Figure 26), and One user's leans back, then being limited by connection and structure 262,282,302,316 and pivotal point 274,276,300,314 4 connecting rods the configuration (as described above) of Figure 28 will be moved to from the configuration of Figure 26.This leads to pivotal point 344 and cam face in turn The distance between 354 increase.This leads to angleIt is increased to about 59.9 ° (Figure 28) from about 49.5 ° (Figure 26).When spring direction is opened The position rotation opened, energy of the section store in spring is transferred in coupler body 112, to make coupler body 112 Radian by waist portions 116 becomes much larger.Like this, backrest controller control 342, convex in user's leans back in chair Wheel connection 350 and torque spring 356 are the radian that bigger is provided by lumbar region domain 116, to lower the radian at user back.

In addition, when chair tilts to the position of Figure 28 from the position of Figure 26, by between lumbar region domain 242 and seat 16 away from From D 234 millimeters are increased to from 174 millimeters.When backrest tilts to the position of Figure 28 from the position in Figure 26, coupler body 112 By dimension D between lumbar region domain 126 and back frame structure 98₁Also increase.Therefore, during hypsokinesis, although distance D is a little Increase, dimension D₁Increase reduce the increase of dimension D because coupler body 112 by lumbar region domain 126 relative to back frame 98 are shifted forward.

Referring again to Figure 26, when user is seated at stand up position, the backbone 360 of the user 362 to take one's seat is in waist The tendency of region 364 is with the first amount to antecurvature.When position of the user from the position leans back of Figure 26 to Figure 28, lumbar region 364 radian tends to increase, and the femur 368 around hip joint 366 relative to user is also rotated one by the backbone 360 of user Point.The increase of dimension D and the increase of the radian by lumbar region domain 126 of coupler body 112 while the hip joint for ensureing user 366 and femur 368 will not seat 16 on slide, and adapt to user backbone 360 lumbar region 364 radian.

As discussed above, Figure 27 shows the backrest module 18 of chair assembly 10 in stand up position, wherein coupler body 112 by lumbar region domain 126 are brought to straight position.If backrest module 18 is inclined to the position of Figure 29 from the position of Figure 27 It sets, then backrest controller control 342 and cam connection 350 all rotate in a clockwise direction.However, cam connection 350 is with slightly higher Rate rotates, angleTherefore become 35.9 ° from 31.4 °.Distance D becomes 265 millimeters from 202 millimeters, and angleFrom 24.2 ° become 24.1 °.

With further reference to Figure 29 A, if by 18 hypsokinesis of backrest module, and it is arranged to high by waist adjusting, then angle It it is exactly 93.6 °, distance D is then 202 millimeters.

Therefore, when tilting backwards backrest, coupler body 112 is bent.However, if radian is initially adjusted to One higher level, then by lumbar region domain 126 from uprightly to reclined position increased radian be significantly bigger.This is to examine Consider the arrangement that following facts is made：If user back when erectly taking one's seat is initially the state in an opposing straight, that When user's hypsokinesis, the radian at the back of user will not increase so much.It repeats：If the user in stand up position Back be relatively straight, can keep relatively straight then the back of user is when hypsokinesis, although from orthostatic position Radian can slightly increase when setting reclined position., whereas if the back of user is significantly bent in stand up position, So when user's hypsokinesis, the radian increase of lumbar region will be above the user that its back is initially relatively straight.

A pair of of spring assembly 442 (Figure 20 and Figure 21) is by backrest module 18 from reclined position F toward stand up position E biass.Such as It is most clearly showed that in Figure 22, each spring assembly 442 includes the cylindrical shell for having first end 446 and second end 448 444.Each spring assembly 442 further includes a compression helical spring 450, the first male part 452 and the second male part 454. In example illustrated, the first male part is fixed to the first end 446 of shell 444, and the second male part 454 is fixed to and passes through The rod unit 456 that helical spring 450 extends.Washer 457 is fixed to the distal end of rod unit 458, and abuts helical spring 450 One end, and the other end of helical spring 450 abuts the second end 448 of shell 444.First male part 452 can by a pivot pin 460 It is pivotally secured to backrest supporting structure 302, to be pivotally displaced around pivotal point 461, pivot pin 460 is received in backrest In the pivot hole 462 of support construction 302, and the second male part 454 is then to be pivotally coupled to moment arm by shaft 464 Displaceable member 466 (Figure 30-32), to be pivoted around pivotal point 465.Moment arm displaceable member is suitable for from a low-tension setting (figure Bias or spring assembly 442 33A) are moved into high-tension and set (Figure 34 A), bias assembly 442 is applied in high-tension setting The power of backrest module 18 increased relative to low-tension setting.

Figure 30 A-32 are such as shown in, moment arm displaceable member 466 includes：Adjusting part 468；Moment arm shifts link assembly 470, control input module 260 is operably coupled to adjusting part 468 and allows operator by bias assembly 442 in low It is moved between high-tension setting；And accessory part 472 is adjusted, it is suitable for reducing user as described below by moment arm Displaceable member 466 is moved to the input power being applied on control input module 260 needed for high-tension setting from low-tension setting Amplitude.

Adjusting part 468 includes pivot pin 467 comprising a threaded hole receives threaded adjustment axis Bar 476 is in wherein.It includes first end 478 and second end 484 to adjust shaft 476, and wherein first end 478 extends through base construction 262 hole 480, and guided by bearing assembly 482 to be pivoted around a longitudinal axis.Pivot pin 467 is by a link assembly 469 by base Holder structure 262 supports, and link assembly 469 includes：A pair of links arm 471, link arm 471 respectively have：First end 473, it by Pivot pin 464 is pivotally coupled to the second male part 454；With second end 475, it is pivotly received in pedestal knot by one Pivot pin 477 in the pivot hole 479 of structure 262 is pivotally coupled to base construction 262 to be pivoted around pivotal point 481；With And a hole 483, receive the respective end of pivot pin 467.Pivot pin 467 along its length pivotly with 471 coupling of link arm It closes.

Moment arm displacement link assembly 470 (Figure 30 A and 30B) is included in control input module 260 and the first helical gear The first drive shaft 486 extended between component 488, and between the first helical gear component 488 and the second helical gear component 492 The second drive shaft 490 for extending and being operatively coupled the two, wherein the second helical gear component 492 is connected to adjusting shaft 476.First drive shaft 486 includes first end 496, it is operably coupled to control input by the first universal joint assembly 498 Component 260, and the second end 500 of the first drive shaft 486 is to be operably coupled to first by the second universal joint assembly 502 Helical gear component 488.In the example in the figures, the first end 496 of the first drive shaft 486 includes the first universal joint assembly 498 A female coupling unit 504, and the second end 500 of the first drive shaft 486 includes a female of the second universal joint assembly 502 Coupling unit 506.First helical gear component 488 includes housing unit 508, accommodates the first helical gear 510 and the second helical gear 512 in wherein.As shown, the first helical gear 510 includes the male connector coupling unit with 502 one of the second universal joint assembly 514.The first end 496 of second drive shaft 490 is coupled to the first helical gear component 488 by third universal joint assembly 516. The first end 518 of second drive shaft 490 includes a female coupling unit 520 of third universal joint assembly 516.Second helical gear 512 include the male connector coupling unit 522 of third universal joint assembly 516 and its one.The second end 524 of second drive shaft 490 Including multiple splines 526 being longitudinally extended, the spline (not shown) phase being longitudinally extended corresponding with a coupler part 528 Cooperation.Coupler part 528 is by the 4th universal joint assembly 530 by the second end 524 and the second helical teeth of the second drive shaft 490 Wheel assembly 492 couples.4th universal joint assembly 530 includes housing unit 532, is accommodated：Pass through the 4th cardan universal joint component 530 It is coupled to the first helical gear 534 of coupler part 528, and is fixed to the second helical gear of the second end 484 for adjusting shaft 476 536.Coupler part 428 includes female male part part, receives the male connector male part part with 534 one of the first helical gear 540。

In assembling, the adjusting part 468 of moment arm displaceable member 466 is operably supported by base construction 262, and is controlled Input module 260 processed is operably supported by the control input module installation section 296 of seat support structure 282.As a result, When seat support structure 282 is moved between completely erected position G and complete reclined position H, 260 He of input module is controlled Relative angle between the adjusting part 468 of moment arm displaceable member 466 and apart from change.Third and fourth universal joint assembly 516,530 and pattern chain component cooperation between the splines, to be turned into compensation for opposite become of these angle and distances.

As most clearly showed that in Figure 33 A-34B, moment arm displaceable member 466, which acts on, to be in low-tension and high-tension Bias assembly 442 is adjusted between setting.Specifically, Figure 33 A show bias assembly 442 in low-tension setting and chair assembly 10 In upright position, Figure 33 B show that bias assembly is set with chair assembly 10 in low-tension in reclined position, and Figure 34 A are shown Bias assembly 442 is set with chair assembly in high-tension in upright position, and Figure 34 B show that bias assembly is set in high-tension With chair assembly 10 in reclined position.To be measured between pivotal point 465 and the second end 448 of the shell 444 of spring assembly 442 The distance 542 of gained is used as when moment arm displaceable member 466 is placed in low-tension setting and chair is in stand up position, is applied In the reference of the decrement of spring assembly 442.Distance 542'(Figure 33 B) it shows to be in when moment arm displaceable member 466 with comparing High-tension is arranged and chair is applied to the compressing force of the increment of spring assembly 442 when being in stand up position.User is by by power Moment arm displaceable member 466 moves to high-tension setting from low-tension setting and is applied to back rest supports knot by bias assembly 442 to adjust The amount of power on structure 302.Specifically, operator by moment arm to the input for controlling input module 260 to shift link assembly The adjusting shaft 476 of 470 driving adjusting parts 468 rotates, to make pivot shaft 467 advance along the length for adjusting shaft 476, To change the compressing force being applied on spring assembly 442 by whole period is saved relative to base construction 262 in pivot shaft 467. Pivot shaft 467 is in traveling in the slot 544 in the side plate parts 546 for being placed in the one side wall 268 for being attached to base construction 262.This In indicate, when moment arm displaceable member 466 in high-tension set and chair assembly 10 be in stand up position when distance 542' Be greater than when moment arm displacement member 466 in low-tension setting and chair be in stand up position when distance 542, thus show, When moment arm displacement member be in high-tension setting when, be applied to the compressing force ratio on spring assembly 442 when low-tension is set as Greatly.Similarly, distance 543 ' (Figure 33 B) is greater than distance 543 (Figure 34 B), and the biasing force that bias assembly 442 is applied is caused to increase Add, and backrest module 18 is compeled from reclined position toward stand up position.Here it indicates, the biasing force applied by bias assembly 442 Variation correspond to the change of bias torsion applied around second pivotal point 276, and in certain configurations, do not change bias group Bias torsion also can be changed in the length or biasing force of part 442.

Figure 35 is when being moved between reclined position and stand up position when backrest supporting structure 302 around second pivotal point The chart of 276 torsion forces applied, the torsion compel backrest supporting structure 302 toward stand up position from reclined position.In diagram In example, when backrest supporting structure is the bias assembly when stand up position and moment arm displacement member 466 are in low-tension setting 442 apply the torsion of about 652 in-lbs around second pivotal point 276, and when backrest supporting structure is in reclined position and moment arm Displacement member 466 is then about 933 in-lbs when being in low-tension setting, leads to about 43% variation.Similarly, work as back rest supports Structure is when stand up position and moment arm displacement member 466 are in high-tension setting, and bias assembly 442 is around second pivotal point 274 Apply about 1.47E+03 in-lbs torsion, and when backrest supporting structure in reclined position and moment arm displacement member 466 is in High-tension is then about 2.58E+03 in-lbs when being arranged, and leads to about 75% variation.Backrest supporting structure 302 in upright and Between reclined position by it is mobile when, moment arm displacement member 466 be set to low-tension set and high-tension setting between, bias group The torsion force that part 442 applies generates considerable variation, this allows whole chair assembly 10 for different height, the user of weight Appropriate forward back-supported is provided.

It adjusts 472 auxiliary operation person of accessory part and moment arm displaceable member 466 is moved to low-tension from high-tension setting Setting.Adjusting accessory part 472 includes：Helical spring 548 is fixed to the antetheca of base construction 262 with mounting structure 550 264；With snap part 552, it extends around with 471 fixed shaft 306 of link arm, and includes a buckle part 556, limit Surely the hole 558 of the free end 560 of helical spring 548 is captured.Helical spring 548 is with upward vertical direction applied force F in buckle On component 552 and shaft 306 and link arm 471, moment arm displaceable member 466 is set from low-tension to reduce user Surely the input strength that must be applied on when high-tension setting on control input module 260 is moved to.

As described above, seat assembly 16 is can be between retracted position C and the position D of expansion relative to control assembly 14 (Fig. 3) of longitudinal movement.As most clearly showed that in Figure 19,36 and 37, it includes 564 He of drive component to directly drive component 562 Link assembly 566, the latter couple input module 260 is controlled with drive component 564, thus allow user by adjusting seat Component 16 adjusts the linear position of seat assembly relative to the linear position of control assembly 14.In the example in the figures, seat branch Fagging 32 includes C-shaped guide rail 38, wraps and slidably engaged the corresponding guide ribs of the control panel 572 of control assembly 14 570.A pair of of C-shaped, the connection rail 574 being longitudinally extended is located in corresponding guide rail 38, and is coupled to seat support Plate 32.The sleeve member 576 of a pair of of C-shaped in connection rail 574 in being longitudinally extended and be positioned in connection rail 574 and guide ribs Between 570.Drive component 564 includes the rack member 578 for having multiple teeth 580 extended downwardly.Drive component 564 further includes Rack guide member 582 with C-shaped cross-sectional configuration limits raceway groove 584, it is slideably received within rack member 578 in wherein. Rack guide member 582 includes the slot 586 set along its length, and cooperatively receiving bearing component 588 is in wherein.It substitutes Ground, parts of bearings 588 can be formed and 582 1 integral part of rack guide member.Drive component 564 further includes drive shaft 590, with the universal ground first end that couples and with multiple teeth 596 being radially separated by of control input module 260 Second end 594.In assembling, seat support plate 32 is slidably coupled as described above with control panel 572, wherein tooth-strip part Part 578 is fixed to the downside of seat support plate 32, and one that rack guide member 582 is fixed in control panel 572 opens upwards In the raceway groove 598 of mouth.In operation, the input power applied to control input module 260 by user is passed by link assembly 566 It send to drive component 564, to which the tooth 596 of drive shaft 590 to be driven to the tooth 580 to resist rack member 578 and leads to rack Component 578 and seat support plate 32 are slided relative to rack guide member 582 and control panel 572.

With further reference to Figure 38-40, chair assembly 10 includes a height adjustment assembly 600, allows seat 16 and leans on Vertical adjusting of the back of the body 18 relative to base assembly 12.Height adjustment assembly 600 includes being vertically disposed in known manner Pneumatic linear actuator 28 in the central rods 26 of base assembly 12.

A kind of supporting structure 602 is fixed to shell or base construction 262, and the upper part 604 of pneumatic linear actuator 28 is with The mode known is received in the opening 606 of base construction 262.Pneumatic linear actuator 28 includes a regulating valve 608, can be by moving down It moves to discharge pneumatic linear actuator 28, to provide the adjusting of height.Bellcrank 610 has the arm 630 that upwardly extends and horizontal-extending Arm 640, the latter are configured to engage the relief valve 608 of pneumatic linear actuator 28.Bellcrank 610 is rotatably mounted to holder 602.Cable Component 612 operationally interconnects bellcrank 610 and regulating wheel/bar 620.Cable assembly 612 includes interior cable 614 and outer cable Or sheath 616.Epitheca 616 include a ball accessory 618, in the spherical socket 622 being formed in holder 602 rotatably by It receives.Second ball accessory 624 is connected to one end 626 of interior cable 614.Second ball accessory 624 is in the upward of bellcrank 610 It is rotatably received in second spherical socket 628 of the arm 630 of extension, to allow the rotation of cable-end to transport during height adjusts It is dynamic.

The 632 packet third wheel 620 of second end or outer end portion of interior cable 614, and end fitting 634 is connected to interior cable 614. In 638, this point is connected to end fitting 634 and seat structure to power spring 636.Spring 636 is produced with a direction on interior cable 614 Raw tension, and when valve 608 is released, cable 614 is also shifted with same direction to rotate bellcrank 610.Spring 636 does not produce Raw enough power to activate valve 608, but spring 636 generate enough power with by 640 bias of arm of bellcrank 610 so that and valve 608 contacts.Like this, empty dynamic or loosening is eliminated caused by component is there are tolerance.In operation, user's hand Turn moves regulating wheel 620, thus in generating tension on interior cable 614.This makes bellcrank 610 rotate, so as to cause bell song The arm 640 of handle 610 is pressed against and the valve 608 of actuating pneumatic cylinder 28.One contained spring (not shown) of pneumatic cylinder 28 is upward by valve 608 Bias makes valve 608 move to a non-actuated position after regulating wheel 620 is released.

It includes that the first control input module 700 and second controls input module to control input module 260 (Figure 19 and 41-43) 702, each is adapted so that the input come from user is conveyed to the chair structural member and functor that are coupled with them, chair Sub- component and functor are accommodated in housing unit 704.It includes that component 706, overload clutch are driven in backspace to control input module 260 Device assembly 708 and knob 710.Mechanism or component 706 are driven in backspace, prevent from directly driving component 562 (Figure 36 and 37) and seat Hyte part 16 is driven in the case of the input not from control assembly 700 between retraction and expansion position C, D. Backspace is driven component 706 and is received in the inside 712 of housing unit 704, and includes adapter 714, includes coupling at one end Include spline connection to the male part 716 of the universal adapter of the second end 594 of drive shaft 590 (Figure 37), and in the other end Device 717.Cam part 718 is coupled by clutch components 720 with adapter 714.Specifically, cam part 718 includes flower Key end 722 is coupled to rotate with knob 710, and the cam end 724 with outer cam surface 726.Clutch components 720 include a pair of spline 723 inwardly arranged, spline slidably engages the splined couplers 717 with cam face 730, The cam face is engaged with 726 cam of the outer cam surface of cam part 718 as described below.Clutch components 720 have There are the conical clutch surface 719 for the reception of ring 732 that is locked with being engaged with it, rotation of the retaining ring relative to housing unit 704 It is locked, and include the conical clutch surface 721 of the clutch surface 719 of corresponding clutch components 720, they coordinate with Form a cone clutch.Helical spring 734 is by the past direction bias engaged with retaining ring 732 of clutch components 720.

When not inputting, biasing spring 734 forces the circular cone of the conical surface and retaining ring 732 of clutch components 720 Shape surface engages, to prevent " return and drive " — that is, only be passed through in the case where not inputted from the first control input module 700 Power posteriorly or anteriorly is applied to seat assembly 16, seat assembly 16 is adjusted in retracting between position C, D of expansion.It is grasping In work, operator directly drives component 562 through the first control actuating of input module 700, by seat assembly 16 in retraction and exhibition It is moved between position C, D for opening.Specifically, the rotary force that user is applied to knob 710 is to be sent to cam from knob 710 Component 718.When cam part 718 rotates, the outer cam surface 726 of cam part 718 acts on the convex of clutch components 720 On wheel surface 730, to overcome the biasing force of spring 734 and clutch components 720 is forced to leave bonding station, wherein clutch Component 720 is detached from retaining ring 732.Then, rotary force is communicated to clutch components 720 down to adapter from cam part 718 714, the latter's through connecting rod component 566, which is coupled to, directly drives component 562.

Here it indicates, a small amount of tolerances in the first control input module 700 in engagement and are detached from clutch components 720 When between position by movement, cam part 718 is allowed slightly to be moved (or " shaking ") in linear direction and direction of rotation.Including heat The rotating annular damping element 736 of thermoplastic elastic (TPE) is located in the inside 712 of shell 704, and is attached to clutch Device component 720.In the example in the figures, damping element 736 by against housing unit 704 inner wall compressing and with it frictionally Engagement.

First control input module 700 further include the second turn-knob 738, be adapted with allow as described below user in The upright position of chair assembly is adjusted between the position A of reduction and raised position B.

Second control input module 702 is adapted to adjust the tension being applied in hypsokinesis in backrest module 18, and Control the rear inclination of the backrest module 18.First knob 740 is operably coupled to power by moment arm displacement link assembly 470 Moment arm displaceable member 466.Specifically, the second control input module 702 includes the universal coupling unit 742 of male connector, with moment arm Shift universal coupling unit 504 (Figure 30 and 31) coupling of female of the axis 486 of link assembly 470.

Second knob 760 is adapted with the inclination after cable assembly 762 adjusts backrest module 18, and cable assembly is by the second knob 760 are operably coupled to variable back stop component 764 (Figure 43).Cable assembly 762 leads cable structure 766, second including first The cable pipe 770 led cable structure 768 and extended between them slidably receives actuation cable 772 in wherein.Cable 772 wraps Distal end 774 is included, is fixed relative to base construction 262, and the direction bias from helical spring 778 toward 776.Variable backrest stops Moving component 764 includes：Retainer 780 with multiple vertical staged steps 782；It is fixed twelve Earthly Branches relative to seat assembly 16 The supporting support 784 of support；With slide unit 786, it is slidably coupled to the supporting support 784 in front-rear direction 788 Sliding, and the stop component 780 is fixedly coupled to by a pair of screws 790.Cable 772 is clamped in stop component 780 and sliding Between component 786, so that the longitudinal movement of cable 772 causes stop component 780 to be moved in front-rear direction 788.In operation, it uses Person is by the position for inputting adjusting stop component 780 to the second knob 760, to adjust inclination after possible backrest.Work as backrest When component 18 is moved from upright past reclined position, the step selected in multiple steps 782 of stop component 780 contacts base construction 262 rear 792, to limit inclination after available backrest.

Each arm component 20 (Figure 44-46) includes an arm support component 800, pivotly from arm base construction 802 It is supported, and adjustably supporting armrests component 804.Arm support component 800 includes the first arm member 806, the second arm member 808, arm support structure 810 and armrest assembly support member 812, they coordinate to form one 4 link assemblies.In example illustrated In, the first arm member 806 has U-shaped cross-sectional configuration, and includes：First end 814, is pivotally coupled to arm support structure 810 around pivotal point 816 to pivot；With second end 818, it is pivotally coupled to armrest assembly support member 812, with around pivot Point 820 is pivotally displaced.Second arm member 808 has U-shaped cross-sectional configuration, and includes：First end 822, pivotly coupling Arm support structure 810 is bonded to be pivoted around pivotal point 824；With second end 826, it is pivotally coupled to armrest assembly support portion Part 812, to be pivoted around pivotal point 828.As shown, 4 link assemblies of arm support component 800 allow armrest assembly 804 in complete It is conditioned between height-rise position K and the position L reduced completely, wherein the position K risen completely the and position L reduced completely The distance between be preferably at least about 4 inches.Each arm component further includes with U-shaped cross-sectional configuration and including first edge part 809 the first arm covers component 807, and the second arm set component 811 with U-shaped cross-sectional configuration and including second edge portion 813, Wherein the first arm member 806 is housed inside in the first arm set component 807 and the second arm member 808 is housed inside the second arm set component In 811, so that second edge portion 813 and first edge part 809 are overlapped.

Each arm understructure 802 includes being connected to the first end 830 of control assembly 14, and be pivotally supported arm branch Second end 832 of the support structure 810 to allow arm component 20 to be rotated with direction 837 around vertical axis 835.The first of arm base construction 802 End 830 includes main part 833 and from its outwardly extending narrowed bayonet part 834.In assembling, arm base construction 802 First end 830 main part 833 and bayonet part 834 be received between control panel 572 and seat support structure 282, and It is fastened onto at this by multiple machanical fastener (not shown), the main part that machanical fastener passes through arm base construction 802 833 and bayonet part 834, control panel 572 and seat support structure 282 extend.The second end 832 of arm base construction 802 can pivot Turn ground and receives arm support structure 810 in wherein.

As most clearly showed that in Figure 47, arm base construction 802 includes the bearing recess portion 836 of upward opening, has circle Cylindrical upper portion part 838 and conical lower part 840.Sleeve member 842 is located in bearing recess portion 836, and and branch The lower part 840 in concave portion 836 is similarly configured, and includes conical portion 846.Arm support structure 810 includes lower end, lower end With cylindrical upper section part 848 and conical lower part 850, the latter is received in the low portion 846 of sleeve member 842 It is interior.The upper end 852 of arm support structure 810 is configured to be operatively engaged in vertically arrangement, as described below.Pin member 854 be located in arm support structure 810 be placed in center, in axially extending hole 856.In the example in the figures, pin member 854 are formed from steel, and the upper end 852 of arm support structure 810 is made of metal powder, are formed around the proximal end of pin member 854, and The combination of wherein upper end 852 and pin member 854 is encapsulated in outer aluminized coating.The distal end 853 of pin member 854 includes axially extending Screw thread hole 855, by threadably receive adjusting screw 857 wherein.Arm base construction 802 includes cylindrical second recess portion 858, it and bearing recess portion 836 are separated by wall 860.It is recessed that helical spring 864 around the distal end of pin member 854 853 is located in second It in portion 858, and is confined between the wall 860 of arm base construction 802 and washer part 866, so that helical spring 864 is with arrow It is tight in the lower end and sleeve member 842 in pin member 854, thus making arm support structure 810 that 868 direction applies a downward power It is thickly frictionally engaged and sleeve member 842 and the bearing recess portion 836 of arm base construction 802 is closely frictionally engaged.Adjust spiral shell Nail 857 is adjustable, to adjust the friction interaction between arm support structure 810, sleeve member 842 and arm base construction 802 simultaneously Increase the power applied required for user moves 20 around the pivot access point 835 of arm component with pivotal orientation 837.Arm support structure Pivot connection between 810 and arm base construction 802 allow entire arm component 800 from extended through pivot access point 835 and with The line 874 that the central axis 872 of seat assembly 16 extends in parallel with 876 direction (Figure 48) inwardly pivot, and from line 874 with 878 direction is pivoted out.Preferably, arm component 20 is pivoted with 876 direction from line 874 and is than or equal to about 17 °, and from line 874 are pivoted with 878 direction than or equal to about 22 °.

With further reference to Figure 49-51, the vertical height of handrail is adjusted to be realized by rotating 4 connecting rods, it is by first Arm member 806, the second arm member 808, arm support structure 810 and the formation of armrest assembly support member 812.Geared parts 882 wrap Multiple teeth 884 are included, they are arranged with an arc around pivotal point 816.Locking member 886 is pivotly pacified in pivotal point 888 It is filled to arm 806, and includes multiple teeth 890, they are selectively engaged the tooth 884 of geared parts 882.When tooth 884 and 890 engages When, the height of handrail 804 is fixed, this is because the rigid triangle formed between pivotal point 816,824 and 888.If Apply downward power F4 to handrail, the torque of one (Figure 50) counterclockwise then results from locking member 886.This torque is by tooth 890 are pushed into engage with tooth 884, to securely lock the height of handrail.

One elongated lock assembly 892 is rotatably mounted to arm 806 in pivot 894.The polymeric bearing of low-frictional force Component 896 is arranged on the upper bending part 893 of elongated lock assembly 892.As discussed in more detail below, one is released manually It includes pad 900 to put bar or component 898, can upward be moved by user with selectively by the tooth 890 of locking member 886 It is discharged from the tooth 884 of geared parts 882, to allow the vertical height of handrail to adjust.

One block of leaf spring 902 includes first end 904, and engagement is formed in the recess of the upper limb 908 of elongated lock assembly 892 906.Therefore, leaf spring 902 is formed to make the cantilever of supporting point with the recess 906 of lock assembly 892.Elongated lock assembly 892 The lug 912 upwardly extended is received in the elongated slot 910 of leaf spring 902, thus by leaf spring 902 relative to lock assembly 892 Positioning.Pressure (F1), thus generation tend to locking member 886 knob 918 of the 916 pairs of locking members 886 in end of leaf spring 902 upwards Around the pivot 888 is with the torque of direction (Figure 51) rotation of (release) clockwise.Leaf spring 902 is also in recess 906 to elongated lock section Part 892 generates clockwise torque, and also generates a torque to locking member 886, tends to locking member 886 with up time The direction around the pivot 888 of needle (release) rotates.This torque tends to tooth 890 being detached from from tooth 884.If tooth 890 is de- from tooth 884 It opens, the height of armrest assembly can be adjusted.

Locking member 886 includes a concave portion or notch 920 (Figure 50), receives the tip of elongated lock assembly 892 922.Concave portion 920 includes the first shallow V-shaped part for having angle position 924.Concave portion further includes a small concave portion or recess 926 and one abut the transverse direction of recess 926, surface 928 upward.

As described above, torque of 902 nucleus formation of leaf spring in locking member 886, tend to tooth 890 from tooth 884 It is detached from.However, when the tip of elongated lock assembly 892 or end 922 are engaged with the recess 926 of the concave portion 920 of locking member 886 When, this engagement prevents the rotary motion in (release) direction clockwise of locking member 886, to which tooth 890 and 884 to be locked to each other It engages and prevents the height of handrail from adjusting.

It discharges arm component to adjust for the height of handrail, user then pulls up pad 900 against a small leaf spring 899 (Figure 50).Releasing parts 898 are rotated around the axis 897 that is extended with front-rear direction, and the inner end of manual release lever 898 is against bearing portion The upper bending part 893 (Figure 51) of the elongated lock assembly 892 of part 896/ pushes down on.This generates a downward power, it makes elongated 892 around the pivot 894 of lock assembly rotates.This by the end 922 (Figure 50) of elongated lock assembly 892 to moving up so that it is adjacent to lock Determine the shallow angle position 924 of the concave portion 920 of component 886.The displacement of this lock assembly 892 discharges locking member 886, so that locking member 886 are rotated due to the direction for being biased to (release) clockwise of leaf spring 902.This rotation makes tooth 890 be detached from from tooth 884, to allow The height of armrest assembly is adjusted.

Armrest assembly is also configured to prevent the height during downward power F4 (Figure 50) is applied to armrest pad 804 from adjusting Component is detached from.Specifically, since arm member (806,808), arm support structure 810 and armrest assembly support member 812 are formed 4 connecting rods, downward power F4 will tend to that pivotal point 820 is made to move toward pivotal point 824.However, elongated lock assembly 892 is roughly It is arranged between pivot 820 and 824, and their being aligneds, to prevent the downward rotation of 4 connecting rods.As described above, downwards Power F4 so that tooth 890 is tightly engaged tooth 884, securely lock the height of handrail.If when applying downward power F4 to handrail Shi Zhidong release levers 898, lock assembly 892 will move, and the end 922 of elongated lock assembly 892 will be from the concave portion of locking member 886 920 recess 926 is detached from.However, even if lock assembly 892 makes tooth if moving on to the torque that releasing position imposes in locking member 886 890 and 884 remain engaged with.Therefore, the configuration of 4 connecting rods, locking member 886 and geared parts 882 provides a mechanism, wherein such as The downward power F4 of fruit is operated upon by handrail, then the height that cannot carry out handrail is adjusted.

As most clearly showed that in Figure 52 and 53, each armrest assembly 804 is adjustably by associated arm support group Part 800 supports, thus armrest assembly 804 can around pivotal point 960 between in-line position M and the position N of pivot inwardly and to Other places pivots.Each armrest assembly relative to arm support component 800 associated there be also can linearly in retracted position O and It is adjusted between expanded position P.Each armrest assembly 804 (Figure 53) includes a handrail housing unit 962, is supported with armrest assembly 812 one of component simultaneously limits inner space 964.Armrest assembly 804 further includes support plate 966, the main part with plane 968, and the pivot bosses 970 for receiving hole 969 with a pair of of machanical fastener and upwardly extending.The block case 972 of rectangle Include the planar section 974 therethrough of hole 976 of an ellipse, a pair from planar section 974 orthogonally along its longitudinal direction The side wall 978 of extension, and a pair of end wall 981 orthogonally extended from planar section 974 across its end cross.Armrest assembly 804 further include rotation and linear regulation component 980, and the main part with plane, it defines a upper surface 984 and once Surface 986.Centrally located hole 988 extends through main part 982, and pivotally receives pivot bosses 970 in wherein.Rotation Turn and linear regulation component 980 further includes：Positioned at the hole 990 of a pair of of arc of its opposite end；Two groups of ribs in a pair 991, they are laterally separated by, are arranged to arc, being upwardly extended from upper surface 984, and in limiting multiple spine between them Position 993.The main part 996 of the alternative pack 994 of rotation including plane and in the pliable elasticity of wherein centrally located a pair Finger-shaped material 998 includes respectively a bonding part 1000 extended downwardly.Each armrest assembly 804 further includes arm pad base 1002 and arm pad component 1004, the latter is overmolded on base portion 1002.

In assembling, support plate 966 is positioned on handrail housing unit 962, block case 972 is in support plate 966, So that the bottom surface 1006 of planar section 974 frictionally abuts against top surface 1008, rotation and the linear regulation portion of support plate 966 Part 980 is between the side wall 978 and end wall 981 of block case 972 so that the bottom surface 986 of rotation and linear regulation component rubs The planar section 974 of ground engagement slide shell 972, and the selector in rotation and the rotation of the top of linear regulation component 980 Part 994.A pair of of machanical fastener passes through the hole 999 of rotation alternative pack 994, rotation and linear regulation portion such as rivet 1010 The hole 990 of the arc of part 980 and the hole 969 of support plate 966 extend, and to be threadably secured to handrail housing unit 962, To by support plate 966, rotation and the linear movement of linear regulation component 980 and the alternative pack 994 of rotation relative to helping Hand shell 962 is fixed.Then, base portion 1002 and arm pad component 1004 are fixed to block case 972.Sliding block is allowed in above-mentioned arrangement Shell 972, base portion 1002 and arm pad component 1004 slide in the straight direction, thus armrest assembly 804 can in retracted position O and It is conditioned between expanded position P.Rivet 1010 is adjustable, to adjust by support plate 966 and rotation and linear regulation component 980 are applied to the clamping force in block case 972.The projection portion that base portion 1002 is centrally located including one, upwardly extends 1020, and corresponding down-set concave portion (not shown), there is a pair of side wall being longitudinally extended.Each side wall includes multiple Rib and spine position, are similar to previously described rib 991 and spine position 993.In operation, when arm pad 1004 is moved with rectilinear direction When dynamic, the spine position of 970 engaging recesses of pivot bosses, to provide tactile feedback to user.In the example in the figures, pivot Boss 970 includes slot 1022, and when pivot bosses 970 engage spine position, slot allows the end of pivot bosses 970 to be resiliently deformed, To reduce the abrasion to spine position.The hole 990 of the arc of rotation and linear regulation component 980 allows regulating member 980 around branch The pivot bosses 970 of fagging 966 pivot, and allow the quilt between in-line position M and angled position N of armrest assembly 804 Adjustment.In operation, the bonding part 1000 of each finger-shaped material 998 of the alternative pack of rotation is selectively connectable rib The spine position 992 limited between 991, to allow user that armrest assembly 804 is positioned to selected rotation position, and works as handrail When component 804 is pivotally adjustable tactile feedback is provided to user.

In the foregoing description, those skilled in the art will readily recognize that, concepts disclosed herein is not departed from Can to the present invention each component and element make various alternative implementations, to the present invention various modifications may be made.Such modification will Be considered and be included in the attached claims, unless these claims clearly stated by its word it is really not so.

Claims

1. a kind of chair assembly, it includes：

Double leval jib component, it includes：

The first connecting rod component having a first end and a second end, wherein the first connecting rod component include U-shaped section along its certain length Configuration；

The second connecting rod component having a first end and a second end；

Third linkage component has and is pivotally coupled to the first end of first connecting rod component with around the first pivot point First end, and the second end that is pivotally coupled to the first end of second connecting rod component to be rotated around second pivotal point；With

4th linkage component has and is pivotally coupled to the second end of first connecting rod component with around third pivot point First end, and be pivotally coupled to the second end of second connecting rod component with around the second end of the 4th pivot point；

Wherein the double leval jib component includes lower end and upper end, is adjusted between the position that the position and one that can be risen in one reduce Section；

Armrest assembly, the arm for being suitable for supporting the user that takes one's seat on it, and are supported on the upper end of double leval jib component；

The lower end of wherein double leval jib component is pivotally supported by arm support structure, to be pivotally movable around the 5th pivotal point, So that the upper end of double leval jib component can move between first position and the second position, the second position is located at first position lateral outer side Position；

Wherein first, second and third and four pivotal points respectively limit first, second and third and four turnings of the double leval jib component；

Wherein first and the 4th turning in limiting diagonal distance between the two, this is right during arm support surface moves down Linea angulata distance reduces；And

First and the 4th turning are operatively coupled by rigid attachment, to which the rigid attachment is placed in compressive state, To prevent the diagonal distance from reducing, to which arm support surface is locked in the height that user selectes.

2. chair assembly as claimed in claim 1, wherein the second connecting rod component include U-shaped cross-sectional configuration along one length, and its Middle first connecting rod component and the cooperation of second connecting rod component to be formed and be longitudinally extended along the length of the first and second linkage components in Portion channel.

3. chair assembly as described in claim 1, wherein the third connecting rod component include at least part of arm support structure.

4. chair assembly as described in claim 1, wherein the fourth link component include at least part of armrest assembly.

5. the lower end of chair assembly as described in claim 1, wherein the double leval jib component includes pivot bosses and pivot hole It is selected one of them, which includes the another of pivot bosses and pivot hole, and wherein pivot bosses are received To be pivotally supported the double leval jib component with around the 5th pivot point in pivot hole.

6. chair assembly as described in claim 1, wherein the double leval jib component is between the position of rise and the position of reduction It adjusts and is than or equal to about 35 °.

7. chair assembly as described in claim 1, the wherein armrest assembly can be adjusted pivotally relative to the double leval jib component Section.

8. chair assembly as claimed in claim 7, the wherein armrest assembly can be adjusted linearly relative to the double leval jib component.

9. chair assembly as described in claim 1, the wherein armrest assembly can be adjusted linearly relative to the double leval jib component Section.

10. a kind of chair assembly, it includes：

Double leval jib component, it includes：

First connecting rod component, with first end, second end and the U-shaped cross-sectional configuration being arranged along one length；

Second connecting rod component, with first end, second end and U-shaped cross-sectional configuration along the setting of one length, and wherein the One linkage component and the cooperation of second connecting rod component are to form along the inside that the length of the first and second linkage components is longitudinally extended sky Between；

Third linkage component, has a first end and a second end, and first end is pivotally coupled to the of first connecting rod component One end is with around the first pivot point, second end is pivotally coupled to the first end of second connecting rod component with around second pivotal point Rotation；With

4th linkage component, has a first end and a second end, and first end is pivotally coupled to the of first connecting rod component Two ends are with around third pivot point, second end is pivotally coupled to the second end of second connecting rod component with around the 4th pivotal point Rotation；

The wherein double leval jib component includes lower end and upper end, vertical between the position that the position and one that can be risen in one reduce It adjusts；

Armrest assembly, the arm for being suitable for supporting the user that takes one's seat on it, and are supported on the upper end of double leval jib component；And

Locked component comprising the first locking connection with first surface, and the with multiple teeth second locking connection, those Tooth corresponds to multiple upright positions that the double leval jib component is located between the position risen and the position of reduction, wherein first and the Two locking connection can be moved between a latched position and a unlocked position relative to each other, in latched position, first surface with At least one of which of multiple teeth engages, to prevent double leval jib component to be conditioned between the position risen and reduced, and in solution In lock position, first surface is separated by with the multiple tooth, thus allow double leval jib component in rise and reduce position it Between be conditioned, and

Wherein first and second locking connections all have in at least one considerable internally positioned space in part；

And wherein the locked component further comprises rigid attachment, and first and the 4th turning are operatively coupled, to The rigid attachment is placed in compressive state, to prevent the diagonal distance from reducing, to which arm support surface is locked in use The height that person selectes.

11. such as the chair assembly of claim 10, further comprise：

First set component accommodates first connecting rod component, and carries at least one elongated first edge part at least partly；

Second set of component accommodates second connecting rod component, and carries at least one elongated second edge portion at least partly, It is overlapped with first edge part at least partly, wherein is conditioned between the position risen and reduced in double leval jib component Period, first edge part and second edge portion are moved relative to each other.

12. such as the chair assembly of claim 11, wherein first edge part and second edge portion are in the position risen and reduced It all overlaps each other in setting.

13. chair assembly as claimed in claim 10, wherein third connecting rod component include multiple tooth.

14. chair assembly as claimed in claim 10, wherein the first locking connection is to be pivotally coupled to first connecting rod portion Part.

15. chair assembly as claimed in claim 10, the wherein locked component are biased toward latched position.

16. chair assembly as claimed in claim 15, the wherein locked component are by leaf spring bias toward latched position.

17. a kind of chair assembly, it includes：

Base construction limits a upper part and the low portion on this under part；

Seat support structure comprising seat support surface upwardly is support configured to take one's seat user thereon；

The backrest structure upwardly extended is support configured to the back of user with back support surface forward In generally upright position；

Controller control, the first end with the rear portion for being pivotally coupled to seat support structure, and pivotly coupling It is bonded to the second end of the rear portion of backrest supporting structure；

Armrest assembly comprising be coupled to the arm support structure of seat support structure, which carries can be up and down Mobile arm support surface upwardly, and it is movably coupled to the double leval jib component of arm support structure and armrest assembly, wherein The double leval jib component includes：

First connecting rod component with the first and second ends；

Second connecting rod component with the first and second ends；

Third connecting rod component, has a first end and a second end, first end it be pivotally coupled to the of first connecting rod component One end is with around the first pivot point, second end is pivotally coupled to the first end of second connecting rod component with around second pivotal point Rotation；And

Fourth link component, has a first end and a second end, and first end is pivotally coupled to the second of first connecting rod component End is with around third pivot point, second end is pivotally coupled to the second end of second connecting rod component to turn around the 4th pivotal point It is dynamic；

Wherein first, second and third and four pivotal points respectively limit first, second and third and four turnings of the double leval jib component, and its In first and the 4th turning in limiting diagonal distance between the two, during arm support surface moves down the diagonal line away from From diminution；And

First and the 4th turning are operatively coupled by rigid attachment, to which rigid attachment is placed in compressive state, with The diagonal distance is prevented to reduce, to which arm support surface is locked in the height that user selectes.

18. such as the chair assembly of claim 17, the wherein arm support surface is provided on third connecting rod component.

19. chair assembly as claimed in claim 18, wherein the fourth link component include internal part, multiple teeth are carried It is provided thereon and is affixed to arm support structure, and includes：

Pivotable locking member, carries multiple teeth, those teeth are selectively connectable on the internal part of double leval jib component Tooth.

20. chair assembly as claimed in claim 19, the wherein rigid attachment are contained between locking and unlocked position and move Actuator component, the actuator component limit cardinal extremity；And include：

Actuator component is biased towards latched position, and is also biased into the tooth of pivotable locking member de- by spring From the engagement with the tooth on the internal part of double leval jib component；

Wherein the cardinal extremity of actuator component can be moved into the first concave portion of locking member, to allow the tooth of locking member to move with de- The engagement of tooth from the internal part with double leval jib component.

21. such as the chair assembly of claim 20 comprising：

Second lock includes second concave portion of locking in locking member, and when downward power is applied to cushion, second is recessed Enter the movement that portion receives the cardinal extremity of actuator component and prevents locking member.

22. the cardinal extremity of chair assembly as claimed in claim 21, the wherein actuator component is sharp.