CN108784085A

CN108784085A - Chair assembly and armrest assembly

Info

Publication number: CN108784085A
Application number: CN201810622485.6A
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; Steelcase Inc
Priority date: 2012-09-20
Filing date: 2013-09-19
Publication date: 2018-11-13
Also published as: CN106235713A; HK1206222A1; WO2014047255A3; CN104661567B; CN104661567A; CN106235713B; AU2013318083B2; MX2022011894A; JP6244364B2; CA2881887A1; JP2015529144A; AU2013318083A1; MX2015003446A; MY169026A; WO2014047255A2

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 assembly and armrest assembly

Present patent application is divisional application；The applying date of its original application is September in 2013 19, application No. is 201380049111.5 entitled " chair arm component ".Original application is international application, international application no PCT/ US2013/060560, international filing date are September in 2013 19, are on March 20th, 2015 into National Phase in China day.

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 including 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 include have first end and The first connecting rod component of second end, the second connecting rod component having a first end and a second end, third connecting rod component have the One 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 Turn ground and is coupled to the first end of second connecting rod component to be rotated around second pivotal point and fourth link component, with first 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, and wherein 4 link assembly includes lower end and upper End is conditioned between the position that can be risen in one and the position of a reduction.Chair assembly includes also armrest assembly, is fitted Be equipped with support take one's seat user arm on it, and be supported on the upper end of 4 link assemblies, wherein the lower end of 4 link assemblies by Arm support 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 It is moved between one position and the second position, 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 portion Part carries first end, second end, and the cross-sectional configuration of U-shaped being arranged along its length；Second connecting rod 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 the cooperation of second connecting rod component To be formed along the inner space that the length of the first and second linkage components is longitudinally extended；Third connecting rod 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 is pivotably Ground is coupled to the first end of second connecting rod component to be rotated around second pivotal point；And fourth link component, have first 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 is conditioned between the position that can be risen in one and the position of a reduction.Chair assembly includes also armrest assembly, is fitted Be equipped 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 tool There is the first locking connection of first surface, and the with multiple teeth second locking connection, those teeth are located at corresponding to 4 connecting rod Multiple upright positions between the position of rise and the position of reduction, wherein first and second locking connection can relative to each other in It is moved between one latched position and a unlocked position, in latched position, at least one of which of first surface and multiple teeth connects Close, to prevent 4 connecting rods to be conditioned between the position risen and reduced, and in unlocked position, first surface with it is the multiple Tooth is separated by, and 4 connecting rods is thus allowed to be conditioned between the position risen and reduced, and the wherein first and second lockings Connection all has in the internally positioned space of at least one 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 cosily Support the armrest assembly of the arm for the user that takes one's seat on it；Arm support component carries the lower end supported by arm support structure, With the upper end of supporting armrests component thereon, the position and one that wherein arm support component can vertically rise in one vertically drop It is conditioned between low position；With a locked component.Locked component includes：First locking connection, with first surface and more At least one of a tooth；Second locking connection, it is another with its of first surface and multiple teeth, and can be in a locking It is moved between position and a unlocked position, in latched position, first surface is engaged at least one of which of multiple teeth, with Preventing arm support component is conditioned between the position risen and reduced, and in unlocked position, first surface with it is the multiple Tooth is separated by, and thus arm support component is allowed to be conditioned between the position risen and reduced；Actuation linkages, it is operable Ground couples with the first locking connection and suitable for moving between the first and second positions, in first position, the first locking connection Latched position is moved to by actuator connection, in the second position, the first locking connection moves to unlocked position by actuator connection； And couple the actuator component being operatively coupled with actuator, wherein at least part of actuator component can be by one The user that takes one's seat activates, and 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 Degree.Vertical adjusting lock set includes a moveable releasing parts, and conciliates lock-bit in locking when the releasing parts are moved The actuator component shifted between setting.Actuator component limits a cardinal extremity.Vertical adjusting lock set further includes movably locking Component, with teeth, they are selectively engaged the tooth on the internal part of 4 connecting rods.One spring is by actuator component bias Towards latched position, and also by the tooth bias of pivotable locking member toward being detached from and the tooth on the internal parts of 4 connecting rods Engagement.Actuator component cardinal extremity shift-in locking member the first concave portion, with allow locking member tooth move be detached from The engagement of the tooth of the internal part of 4 connecting rods.Armrest assembly further includes the second lock, with a locking second in locking member Concave portion, when downward power is applied to cushion, the second concave portion receives the end of actuator component and prevents locking member Movement.

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 it is used to support the arm branch of the arm for the user that takes one's seat thereon 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 The upper end of height and a lower end, it includes the one of selected of pivot bosses and pivot hole.Chair assembly also wraps Containing arm support structure comprising pivot bosses and pivot hole it is another, wherein pivot bosses be received in pivot hole with Arm support component is pivotally supported to be rotated between first position and the second postion around a pivotal point, pivot bosses have Coniform 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 Set the position of lateral outer side.Chair also includes seat support structure comprising is support configured to take one's seat user on it Seat support surface, wherein the seat support surface includes longitudinal axis, and wherein arm support component upper end from the seat branch The axis of longitudinal axes parallel for supportting 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 position 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 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 shown in dotted line raised Position, and show 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 exists Stand up 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 exists Reclined 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 exists Stand up 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 exists Reclined 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 operable each other Ground couples, including element directly or indirectly coupled to each other.In addition, " chair " word used herein above is covered respectively Kind seat arrangement, 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 base assembly 12, the base assembly 12 by foot wheel of the foot wheel for the floor surface 13 for abutting support The control of support or support component 14, the respective seat assembly 16 operationally coupled with control assembly 14 and backrest module 18, with And a pair of arm component 20.Control assembly 14 (Fig. 3) is operationally coupled with base assembly 12, so that seat assembly 16, the backrest Component 18 and arm component 20 can be vertically conditioned between the position A reduced completely and the position B risen completely, and around vertical Straight axis 21 is pivoted with direction 22.Seat assembly 16 is operationally to be coupled with control assembly 14, so that the seat assembly 16 can be between fully retracted position C and fully expanded position D by longitudinally adjust relative to the control assembly 14.Seat assembly 16 (Fig. 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 complete in one It is moved between the complete reclined position F of full stand up position E and one, and further makes seat assembly 16 completely erected in one Moved between the complete reclined position H of position G and one, respectively correspond to backrest module 18 completely erected position E and completely after Incline position F.

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 knots may be used Structure, 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 assembly 16 further includes a pliable resilient seat outer housing 40, have a pair of retrousse lateral part 42 and one to The rear portion 44 turned over cooperates to form a shape being generally concaved set up.In the example in the figures, Seat shell 40 is made of opposite pliable material such as thermoplastic elastomer (TPE) (TPE).In assembling, seat shell body 40 is consolidated Determine and be sandwiched between seat support plate 32 and a plastics, pliable resilient seat disk 46, seat disk passes through multiple mechanical fasteners Part is fixed to seat support plate 32.Seat disk 46 includes leading edge 48, rear 50, extends between leading edge 48 and rear 50 Lateral margin 52, top surface 54 and bottom surface 56, they coordinate to form a shape being generally concaved set up.In diagram In example, seat disk 46 includes multiple slots 58 being longitudinally extended, and is extended forward from rear 50.Slot 58 mutually matches in-between It closes to limit multiple fingers 60, each finger 60 is individually pliable, elastic.Seat disk 46 further includes multiple cross To the long hole 62 of orientation, it is located near leading edge 48.Hole 62 is worked in coordination to increase the entirety of seat disk 46 in its region Mutabililty, and more specifically allow for a front part 64 of seat disk 46 relative to the backward part 68 of seat disk 46 in vertical direction 66 bendings, as discussed further below.Seat assembly 16 further includes on the top surface 54 for rest on seat disk 46 and being absorbed in seat The upper surface 76 of airfoam cushion component 70, fabric cover for seat 72 (Fig. 1 and 2) and cushion components 70 in the outer housing 40 of position. One spring supporting component 78 (Figures 5 and 6) is fixed to seat assembly 16, and the front portion suitable for supporting seat disk 46 pliablely Divide 64, to be bent in vertical direction 66.In the example in the figures, spring supporting component 78 includes a supporing shell 80, packet Containing foam, and with the lateral part 82 for defining a upwardly recessed arcuate shape.Spring supporting component 78 further includes one The attachment component 84 of relative stiffness is laterally extended between the lateral part 82 of supporing shell 80, and is located at supporing shell 80 Between the front part 64 of seat disk 46.Supporing shell 80 and attachment component 84 are fixed to seat by multiple machanical fasteners 86 The front part 64 of position disk 46.Spring supporting component 78 further includes a pair of of cantilever spring 88, respectively has and passes through attachment component The distal end 90 that 84 corresponding hole 92 receives, and it is fixed to the proximal end 94 of seat support plate 32, so that each cantilever bullet The distal end 90 of spring 88 can be bent in vertical direction 66.A pair of of linear bearing 96 be fixedly attached to attachment component 84 and with Its hole 92 is aligned, so that distal end 90 of the linear bearing 96 slideably received within a corresponding cantilever spring 88.In operation, When the user to take one's seat on seat assembly 16 when rotating forward and applying downward power to its leading edge, cantilever spring 88 is mutual Cooperation is to allow the front 64 of seat disk 46, and the more generally useful entire front part of seat assembly 16, with vertical direction 66 Bending.

Backrest module 18 (Fig. 7-9B) includes back frame component 98 and the back-supported component 99 that is supported by it.Backrest Frame assembly 98 includes generally a generally rigid material, such as metal, and includes a top frame being laterally extended Part 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 frame part 100 and bottom frame part 102, and coordinate to limit opening 106 with it, with relatively large upper The lower part dimension 110 of portion's dimension 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 118,120 and of a forward surface One surface 122 backward, wherein width of the width of upper part 114 generally than low portion 116 is big, and lower part portion Divide 116 diminutions downwards generally to follow the rear portion of frame assembly 98 to face the configurations of aspect.One lower part strengthening part 115 is attached It is connected to the hook 117 (Fig. 9 A) of the low portion 116 of coupler body 112.Strengthening part 115 includes multiple protrusions 113, engagement Reinforce rib 134 to prevent lower part strengthening part 115 relative to the movement of the side of coupler body 112 to the other side.Discussed below , strengthening part 115 is in pivotal point or axis 346 by the low portion of backrest controller control 342 (Figure 26) and coupler body 112 116 are pivotally connected to 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 to be formed Multiple ribs 130 being laterally extended.Slot 128 cooperates with each other to provide additional mutabililty as coupler body 112 in its position. A pair of pair of transverse ribs 130 coordinate with vertically extending rib 132, and the latter is integrally formed with the former, and set on the former Lateral intermediate point about.When backrest module 18 moves on to reclined position F from stand up position E as described below, by dorsal shield When intermediate position 126 is bent, vertical ribs 132 are acted on so that transverse ribs 130 are linked together and be reduced body 112 Vertical extension between the latter.Coupler body 112 further includes multiple reinforcement ribs 134 being laterally separated by, in lower part Vertical length between part 116 and middle section 126 along coupler body 112 is longitudinally extended.Here it indicates, every rib 134 Depth along every rib 134 from middle section 126 deepen so that the integral rigidity of coupler body 112 along rib length from Middle section 126 increases 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 The bearing surface 156 of multiple side walls 154 of side wall 148 and a spill backward comprising it is vertical to extend through therein one The extended pivot channel 143 in ground, and it is suitable for being aligned with the slot 152 of corresponding pivot bosses 138.Race components 144 include edge The central part 158 that the top frame part 100 of back frame component 98 is laterally extended and is abutted with it, and it is located at its end A pair of of arc bearing surface 160.Specifically, central part 158 includes first part 162 and second part 164, wherein First part 162 abuts the front surface of top frame part 100, and second part 164 abuts the top of top frame part 100 Surface.Each bearing surface 160 extends through hole 166 therein, alignment and 98 one of back frame component including one Corresponding sleeve part 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 position surface 150 and a bearing surface 160.Mechanical fastening component 146 includes respectively a bolt 172, by bearing washer 176 Round edge abutment surface 174 be fixed on the sliding engagement of the inner surface of corresponding pivot bosses 138 178, and with by dorsal shield The corresponding sleeve part 168 of body 112 is threadedly engaged.In operation, upper back pivot component 140 allows back-supported group Part 99 is pivoted relative to back frame component around the pivot 182 (Fig. 7) 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 to After 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, (the figure of comfortable component 184 It 12-14) is fixed to coupler body 112, this is by being directed at and being inserted perpendicularly into each box by the hook 124 of coupler body 112 In the inner space 202 of shape male part 196, until hook 124 engages corresponding bar 204.Here it indicates, before coupler body 112 The rear surface 195 of surface 120 and comfortable component 184 close to the hook 124 and the place of box-like male part 196 be no hole or Hole, to provide smooth front surface 193 and increase 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 are spent, are risen in the position I reduced completely and completely by waist component 186 to releasedly fixed On the upright position selected between the position J risen.Pawl component 212 (Figure 16 A and 16B) includes a housing parts 216, With the engagement lug 218 deviated backward positioned at its end and from the outer surface of housing parts 216 220.One pliable ground elasticity Finger 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 in the upper part 188 of comfortable component 184 In 226, 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 And so that the engagement lug 218 of housing parts 216 abuts the rear surface 195 of comfortable component 184.It then will be by waist component 186 Support section 210 is positioned in the casing 206 of comfortable component 184, so that casing 206 is slidably in wherein, and pawl 224 It is that can selectively be engaged with hole 214, thus allows user optimization by waist component 186 relative to whole back-supported group The position of part 99.Specifically, it includes a pair of outwardly extending, with its one handle to lean on the main part 208 of waist component 186 Part 251 (Figure 18 A and 18B) respectively has C tee sections configuration, it limits raceway groove 253 in wherein, and raceway groove surrounds comfortable portion The corresponding lateral margin 192 of part 184 and the lateral margin 118 of coupler body 112 are simultaneously oriented to along them.

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 Casing 206 end wall, to limit casing 206 of the support section 210 relative to comfortable component 184 for leaning on waist component 186 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 to form a upward opening Inner space 272.Bottom wall 270 including one be placed in one centre, for allowing cylinder component 28 (Fig. 3) to pass through as described below To receive its hole 273.Base construction 262 further define above the pivotal point 274 with front, in lower section and preceding Side pivotal 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 The arm section 284 that a pair extends forward includes respectively a pivot hole 286 for being located at front, passes through pivot shaft 288 It is pivotably fixed to base construction 262, to move pivotally around the pivotal point 274 of top and front.Seat support structure 282 further include rear portion 290, it is laterally extended between arm section 284 and coordinates with it to form inner space 292, base Holder structure 262 is received in the inner.Rear portion 290 includes a pair of arm installation section 294 to extend back, and arm component 20 is such as Under be attached describedly thereon.Seat support structure 282 further includes control input module installation section 296, controls input module 260 are attached thereon.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 one To the arm section 304 extended forward, includes respectively a pivot hole 305 and be pivotally coupled to by pivot shaft 307 Base construction 262, so that backrest supporting structure 302 is wound on lower section and the pivotal point 276 in front pivots.Backrest supporting structure 302 Including rear portion 308, it coordinates with arm section 304 to limit inner space 310, receives base construction 262 in wherein. Backrest supporting structure 302 further includes a pair of pivot hole 312 arranged along its length, they coordinate to limit pivotal point 314. Here it indicates, in some cases, at least part of back frame component 98 can be included as backrest supporting structure 302 A part.

Control assembly 14 further includes multiple controller controls 316, they respectively have by the pivotly coupling of a pair of pivot pin 321 The first end 318 that seat support structure 282 is bonded to be pivoted around pivotal point 300, and by the pivotly coupling of a pair of pivot pin 324 It is bonded to second end 322 of the corresponding pivot hole 312 of backrest supporting structure 302 to be pivoted around pivotal point 314.In operation, When chair assembly is by migration reclined position, controller control 316 controls seat support structure 282 relative to backrest supporting structure 302 movement, specifically the former with respect to the latter hypsokinesis rate, 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 is wrapped Include the installation hole 328 positioned at its proximal end 330.In the example in the figures, Quick Connect Kit 326 includes back frame group With the male part part 332 extended forward including a pair, male part part 332 is matched for the configuration of the bottom frame part 102 of part 98 It closes to limit the raceway groove 334 between them, the proximal end 330 of the reception arm section 304 of raceway groove 334 and rear portion 308 are in it It is interior.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 allows back frame component 98 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.In order to just In reference, called as follows with the associated associated pivot component of 4 link assemblies of control assembly 14：Base construction 262 and base It is known as the first pivotal point 274 with the pivotal point in front 274 above between seat supports structure 282；In 262 He of base construction It is known as second pivotal point 276 in the pivotal point 276 in lower section and front between backrest supporting structure 302；In controller control 316 First end 318 and seat support structure 282 between pivotal point 300 be known as third pivotal point 300；And in controller control Pivotal point 314 between 316 second end 322 and backrest supporting structure 302 is known as the 4th pivotal point 314.In addition, Figure 24 with Dotted line shows the component of the chair assembly 10 in the reclined position, wherein the chair of reclined position reference label with " ' " Mark.

In operation, 4 link assemblies of control assembly 14 coordinate to be moved into from stand up position E in backrest module 18 By seat assembly 16 from stand up position G hypsokinesis to reclined position H when reclined position F, the wherein tops of position E and F in fig. 24 It is shown with lower part, upper part and low portion as single piece the hypsokinesis of backrest module 18.Specifically, Controller control 316 is configured and is coupled to seat support structure 282 and backrest supporting structure 302, so that working as backrest supporting structure 302 around second pivotal point 276 when pivoting, and seat support structure 282 is pivoted around the first pivotal point 274.Preferably, seat supports The rate that structure 302 is rotated around the first pivotal point 274 is the rate that backrest supporting structure 302 is rotated around second pivotal point 276 Between about 1/3 to about 2/3, the rate that more preferably seat support structure is rotated around the first pivotal point 274 is backrest supporting structure About half of 302 rates rotated around second pivotal point 276, and most preferably, when backrest module 18 is from completely erected position E hypsokinesis is about 18 ° to angle γ, until when complete reclined position F, seat assembly 16 is from completely erected position G hypsokinesis to angle β is spent, is about 9 °, until complete reclined position H.

As most clearly showed that in Figure 24, no matter it is in completely erected position or hypsokinesis completely when chair assembly 10 When position, the first pivotal point 274 is all positioned at the top and front of second pivotal point 276, because when seat assembly 10 is by hypsokinesis When, base construction 262 is kept fixed relative to the floor surface 13 of support.In the mistake of the entire reclining movement of chair assembly 10 Cheng Zhong, third pivotal point 300 be maintained at behind the first pivotal point 274 and its relative vertical elevational below.Here further It indicates, in the entire reclining movement of chair assembly 10, the distance between the first pivotal point 274 and second pivotal point 276 are kept More than the distance between third pivotal point 300 and the 4th pivotal point 314.As most clearly showed that in Figure 25, when chair assembly 10 When in completely erected position, the one of controller control 316 central axis 340 being longitudinally extended and the formation of seat support structure 282 Sharp angle α, and when chair assembly 10 is in complete reclined position, they then form sharp angle α '.Here it indicates, when chair group When part 10 is moved between its completely erected and complete reclined position, the central axis 340 of controller control 316 will not rotate The alignment orthogonal more than with seat support structure 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 rigid Property it is fixed to one another.In addition, pivotal point 346 may include a retainer, limitation backrest controller control 342 is opposite to lean on dorsal shield Rotation of the body 112 in the first and/or second rotation direction.For example, referring to Figure 26, pivotal point 346 may include retainer, The low portion 116 of coupler body 112 is allowed to be rotated clockwise relative to controller control 342.If tending to reduce dimension D1's What backward/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 It can be configured to prevent the low portion 116 of coupler body 112 from rotating in a counter-clockwise direction (figure relative to controller control 342 26).When this leads to upper part hypsokinesis in chair by pushing backrest module 18 as user, couples 342 and lean on dorsal shield The low portion 116 of body 112 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 angle(Figure 26's) Backrest controller control 342 and cam are rotationally coupled 350 biass by mode.Those torque springs 356, which generate, to be tended to the inverse time Needle direction (Figure 26) rotate controller control 342 and simultaneously in a clockwise direction (Figure 26) rotation cam connection 350 power.Therefore, Those torque springs 356 tend to increase the angle between backrest controller control 342 and cam connection 350It supports and ties at seat What retainer 348 on structure 282 limited backrest controller control 342 rotates counterclockwise to position shown in Figure 26.This power also may be used 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 Therefore and back rest supports sample is as discussed above, and back frame structure 98 is rigidly attached backrest supporting structure 302, and Structure 302 pivots.The power generated by torque spring 356 pushes up the low portion 116 for pressing against coupler body 112.It is same as above It is discussed, those slots 128 generating additionally by waist supporting part 126 in coupler body 112 in coupler body structure 112 Mutabililty.The power generated from torque spring 356 also tend to be led to coupler body 112 by waist portions 126 to front curve, with Cause that there is the radian of bigger than mutually abutting the region of waist portions 126 by 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 by waist component 186 One centre or neutral position, so that the radian by waist portions 126 of coupler body 112 is also intermediate or neutral.Further ginseng According to Figure 27, if the upright position by waist component 186 is conditioned, angleIt is reduced, and by the radian quilt in lumbar region domain 126 Reduce.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 fixed connecting rods will move to the configuration (as described above) of Figure 28 from the configuration of Figure 26.This leads to pivotal point 344 and CAM table in turn The distance between face 354 increases.This leads to angleIt is increased to about 59.9 ° (Figure 28) from about 49.5 ° (Figure 26).When spring court It is rotated to the position of unlatching, 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, in user's leans back in chair, backrest controller control 342, cam connection 350 and torque spring 356 are the radian that bigger is provided by lumbar region domain 116, to lower the arc at user back Degree.

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 Distance D increases to 234 millimeters from 174 millimeters.When backrest tilts to the position of Figure 28 from the position in Figure 26, coupler body 112 also increase by dimension D1 between lumbar region domain 126 and back frame structure 98.Therefore, during hypsokinesis, although distance D Increase a little, the increase of dimension D1 reduces the increase of dimension D because coupler body 112 by lumbar region domain 126 relative to by Back frame frame 98 is 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 backbone 360 of user also rotates the femur 368 around hip joint 366 relative to user A bit.The increase of dimension D and the increase of the radian by lumbar region domain 126 of coupler body 112 while the hip pass for ensureing user Section 366 and femur 368 will not seat 16 on slide, and adapt to user backbone 360 lumbar region 364 arc Degree.

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 a higher level, then by lumbar region domain 126 from uprightly to reclined position increased radian be significantly bigger.This It is the arrangement for considering following facts and making：If user back when erectly taking one's seat is initially the shape in an opposing straight State, then when user's hypsokinesis, the radian at the back of user will not increase so much.It repeats：If in stand up position The back of user is relatively straight, can keep relatively straight then the back of user is when hypsokinesis, although from Stand up position can slightly increase to radian when reclined position., whereas if the back of user is significantly in stand up position Bending, then it is initially relatively straight that when user's hypsokinesis, the radian increase of lumbar region, which will be above its back, User.

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 be fixed to it is logical Cross the rod unit 456 of the extension of helical spring 450.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 is by a pivot Pin 460 is pivotably fixed to backrest supporting structure 302, and to be pivotally displaced around pivotal point 461, pivot pin 460 is connect It closes in the pivot hole 462 of backrest supporting structure 302, and the second male part 454 is then by the pivotly coupling of shaft 464 It is bonded to moment arm displaceable member 466 (Figure 30-32), to be pivoted around pivotal point 465.Moment arm displaceable member is suitable for low from one Tension sets (Figure 33 A) and bias or spring assembly 442 is moved to high-tension setting (Figure 34 A), the bias group in high-tension setting The power that part 442 is applied to 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, will control input module 260 be operably coupled to adjusting part 468 and allow operator by bias assembly 442 in It is moved between the setting of low and high-tension；And accessory part 472 is adjusted, it is suitable for reducing user as described below by power Moment arm displaceable member 466 from low-tension setting be moved to high-tension setting needed for being applied to control input module 260 on it is defeated Enter the amplitude of power.

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 pedestal knot The hole 480 of structure 262, and guided by bearing assembly 482 to be pivoted around a longitudinal axis.Pivot pin 467 passes through a link assembly 469 It is supported by base construction 262, link assembly 469 includes：A pair of links arm 471, link arm 471 respectively have：First end 473, It is pivotally coupled to the second male part 454 by pivot pin 464；With second end 475, it is pivotly received in by one Pivot pin 477 in the pivot hole 479 of base construction 262 is pivotally coupled to base construction 262 with around pivotal point 481 It pivots；And a hole 483, receive the respective end of pivot pin 467.Pivot pin 467 along its length pivotly with connecting rod Arm 471 couples.

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 adjustment axis Bar 476.First drive shaft 486 includes first end 496, it is operably coupled to control defeated by the first universal joint assembly 498 Enter component 260, and the second end 500 of the first drive shaft 486 is operably coupled to by the second universal joint assembly 502 First 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 group One female coupling unit 504 of part 498, and the second end 500 of the first drive shaft 486 includes the second universal joint assembly 502 One female coupling unit 506.First helical gear component 488 includes housing unit 508, accommodates the first helical gear 510 and second Helical gear 512 is in wherein.As shown, the first helical gear 510 includes the male connector coupling with 502 one of the second universal joint assembly Close part 514.The first end 496 of second drive shaft 490 is coupled to the first helical gear by third universal joint assembly 516 Component 488.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 includes the male connector coupling unit 522 of third universal joint assembly 516 and its one.Second drive shaft 490 Second end 524 include multiple splines 526 being longitudinally extended, with the corresponding flower being longitudinally extended of a coupler part 528 Key (not shown) matches.Coupler part 528 is by the 4th universal joint assembly 530 by the second of the second drive shaft 490 End 524 is coupled with the second helical gear component 492.4th universal joint assembly 530 includes housing unit 532, is accommodated：Pass through 4th cardan universal joint component 530 is coupled to the first helical gear 534 of coupler part 528, and is fixed to and adjusts the of shaft 476 Second helical gear 536 at two ends 484.Coupler part 428 includes female male part part, is received and the first helical gear 534 The male connector male part part 540 of one.

In assembling, the adjusting part 468 of moment arm displaceable member 466 is operably supported by base construction 262, and Control input module 260 is operably supported by the control input module installation section 296 of seat support structure 282.Its result It is, when seat support structure 282 is moved between completely erected position G and complete reclined position H, to control input module Relative angle between 260 and the adjusting part 468 of moment arm displaceable member 466 and apart from change.Third and fourth Universal connector Head 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, the effect of moment arm displaceable member 466 is in low-tension and high-tension Setting between adjust bias assembly 442.Specifically, Figure 33 A show bias assembly 442 in low-tension setting and chair group For part 10 in upright position, Figure 33 B show bias assembly in low-tension setting and chair assembly 10 in reclined position, Figure 34 A Show that bias assembly 442 is set with chair assembly in high-tension in upright position, and Figure 34 B show bias assembly in height Power is set with chair assembly 10 in reclined position.With the second end 448 of pivotal point 465 and the shell 444 of spring assembly 442 Between measure gained distance 542 as when moment arm displaceable member 466 be placed in low-tension setting and chair is in orthostatic position When setting, it is applied to the reference of the decrement of spring assembly 442.Distance 542'(Figure 33 B) it shows with comparing to work as moment arm displacement group Part 466 in high-tension be arranged and chair be in stand up position when, be applied to the compressing force of the increment of spring assembly 442.It uses Person is applied to adjusting by bias assembly 442 by the way that moment arm displaceable member 466 is moved to high-tension setting from low-tension setting The amount of power on backrest supporting structure 302.Specifically, operator is to move the input for controlling input module 260 by moment arm Position link assembly 470 drives the adjusting shaft 476 of adjusting part 468 to rotate, to make pivot shaft 467 along adjusting shaft 476 Length advance, change to be saved whole period relative to base construction 262 in pivot shaft 467 and be applied to spring assembly 442 On compressing force.Pivot shaft 467 is in the slot in the side plate parts 546 for being placed in the one side wall 268 for being attached to base construction 262 It advances in 544.Here indicate, when moment arm displaceable member 466 in high-tension set and chair assembly 10 is in orthostatic position Distance 542' when setting be greater than when moment arm displacement member 466 in low-tension setting and chair be in stand up position when away from From 542, thus show, when moment arm displacement member is in high-tension setting, the compressing force ratio that is applied on spring assembly 442 It is big when low-tension is set.Similarly, distance 543 ' (Figure 33 B) is greater than distance 543 (Figure 34 B), leads to bias assembly 442 biasing forces applied increase, and backrest module 18 is compeled from reclined position toward stand up position.Here it indicates, by bias group The variation for the biasing force that part 442 is applied corresponds to the change of the bias torsion applied around second pivotal point 276, and at certain In a little configurations, bias torsion also can be changed in the length or biasing force that do not change bias assembly 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 torque Arm displacement member 466 is then about 933 in-lbs when being in low-tension setting, leads to about 43% variation.Similarly, when backrest branch Support 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 the torsion of about 1.47E+03 in-lbs, and when backrest supporting structure is in reclined position and moment arm displacement member 466 It is then about 2.58E+03 inches-pound when being arranged in high-tension, leads to about 75% variation.In backrest supporting structure 302 in straight It is vertical between reclined position by it is mobile when, moment arm displacement member 466 be set to low-tension set and high-tension setting between, The torsion force that bias assembly 442 applies generates considerable variation, and it is different height, weight that this, which allows whole chair assembly 10, User 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, before being fixed to base construction 262 with mounting structure 550 Wall 264；With snap part 552, it extends around with 471 fixed shaft 306 of link arm, and includes a buckle part 556, It limits the hole 558 for the free end 560 for capturing helical spring 548.Helical spring 548 with upward vertical direction applied force F in On snap part 552 and shaft 306 and link arm 471, to reduce user by moment arm displaceable member 466 from low Tension setting moves to the input strength that must be applied on when high-tension setting on control input module 260.

As described above, seat assembly 16 relative to control assembly 14 be can in the retracted position C and position D of expansion it Between (Fig. 3) for vertically moving.As most clearly showed that in Figure 19,36 and 37, it includes drive component 564 to directly drive component 562 With link assembly 566, the latter couples input module 260 is controlled with drive component 564, thus user is allowed to pass through adjusting Seat assembly 16 adjusts the linear position of seat assembly relative to the linear position of control assembly 14.In the example in the figures, seat Position support plate 32 includes C-shaped guide rail 38, wrapped and slidably engaged the corresponding of the control panel 572 of control assembly 14 and lead Draw flange 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 Position support plate 32.The sleeve member 576 of a pair of of C-shaped rail 574 and is led in being longitudinally extended in connection rail 574 and be positioned in connection Draw between flange 570.Drive component 564 includes the rack member 578 for having multiple teeth 580 extended downwardly.Drive component 564 further include the 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, cooperatively receiving bearing component 588 In wherein.Alternatively, parts of bearings 588 can be formed and 582 1 integral part of rack guide member.Drive component 564 is also Including drive shaft 590, with control input module 260 it is universal the first end that couples and with it is multiple radially each other The second end 594 for the tooth 596 being separated by.In assembling, seat support plate 32 and control panel 572 slideably coupling as described above It closes, wherein rack member 578 is fixed to the downside of seat support plate 32, and rack guide member 582 is fixed in control panel In the raceway groove 598 of 572 upward opening.In operation, input power control input module 260 applied by user It is sent to drive component 564 by link assembly 566, to drive the tooth 596 of drive shaft 590 to resist rack member 578 Tooth 580 and cause rack member 578 and seat support plate 32 to be 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 downward Movement is to discharge pneumatic linear actuator 28, to provide the adjusting of height.Bellcrank 610 has the arm 630 upwardly extended and horizontal extension Arm 640, the latter is configured to engage the relief valve 608 of pneumatic linear actuator 28.Bellcrank 610 is rotatably mounted to holder 602.Cable assembly 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 includes a ball accessory 618, in the spherical socket 622 being formed in holder 602 Rotatably it is received.Second ball accessory 624 is connected to one end 626 of interior cable 614.Second ball accessory 624 is in bell song It is rotatably received in second spherical socket 628 of the arm 630 of handle 610 upwardly extended, to allow during height adjusts The rotary motion of cable-end.

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 tension spring 636.Spring 636 is with a direction on interior cable 614 Tension is generated, and when valve 608 is released, cable 614 is also shifted with same direction to rotate bellcrank 610.Spring 636 Enough power is not generated to activate valve 608, but spring 636 generates enough power so that the arm 640 of bellcrank 610 to be biased to Cause is contacted with valve 608.Like this, empty dynamic or loosening is eliminated caused by component is there are tolerance.In operation, User rotates regulating wheel 620 manually, thus in generating tension on interior cable 614.This makes bellcrank 610 rotate, to lead The arm 640 of bellcrank 610 is caused to be pressed against the valve 608 with actuating pneumatic cylinder 28.One contained spring (not shown) of pneumatic cylinder 28 will Valve 608 makes valve 608 move to a non-actuated position to biased after regulating wheel 620 is released.

It includes that the first control input module 700 and second controls input group to control input module 260 (Figure 19 and 41-43) Part 702, each are adapted so that the input come from user is conveyed to the chair structural member coupled with them and function Part, chair structural member and functor are accommodated in housing unit 704.It includes that component 706, mistake are driven in backspace to control input module 260 Carry clutch pack 708 and knob 710.Mechanism or component 706 are driven in backspace, prevent from directly driving component 562 (Figure 36 and 37) and seat assembly 16 in the case of the input not from control assembly 700 in retraction and expansion position C, D it Between driven.Backspace is driven component 706 and is received in the inside 712 of housing unit 704, and includes adapter 714, one End includes the male part 716 of the universal adapter for the second end 594 for being coupled to drive shaft 590 (Figure 37), and in other end packet Include splined couplers 717.Cam part 718 is coupled by clutch components 720 with adapter 714.Specifically, cam part Part 718 includes splined 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 spline with cam face 730 Connector 717, the cam face are engaged with 726 cam of the outer cam surface of cam part 718 as described below.Clutch Device component 720 has the conical clutch surface 719 for the reception of ring 732 that is locked with being engaged with it, and retaining ring is with respect to shell group The rotation of part 704 is locked, and includes the conical clutch surface of the clutch surface 719 of corresponding clutch components 720 721, they coordinate to form a cone clutch.Helical spring 734 is engaged clutch components 720 are past with retaining ring 732 Direction bias.

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.? In operation, operator through first control input module 700 actuating directly drive component 562, by seat assembly 16 in retract with It is moved between position C, D of expansion.Specifically, the rotary force that user is applied to knob 710 is sent to from knob 710 Cam part 718.When cam part 718 rotates, the outer cam surface 726 of cam part 718 acts on clutch components On 720 cam face 730, to overcome the biasing force of spring 734 and clutch components 720 is forced to leave bonding station, Middle clutch components 720 are detached from retaining ring 732.Then, rotary force from cam part 718 be communicated to clutch components 720 with To adapter 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 The rotating annular damping element 736 of thermoplastic elastomer (TPE) (TPE) is located in the inside 712 of shell 704, and is attached to Clutch components 720.In the example in the figures, damping element 736 by against housing unit 704 inner wall compressing and and its It frictionally engages.

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

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 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 torque Arm shifts 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 revolved second Button 760 is operably coupled to variable back stop component 764 (Figure 43).Cable assembly 762 leads cable structure 766, including first The two cable pipes 770 led cable structure 768 and extended between them, slidably receive actuation cable 772 in wherein.Cable 772 It including distal end 774, is fixed relative to base construction 262, and the direction bias from helical spring 778 toward 776.Variable backrest Stop assembly 764 includes：Retainer 780 with multiple vertical staged steps 782；It is fixed relative to seat assembly 16 The supporting support 784 of ground support；With slide unit 786, it is slidably coupled to the supporting support 784 in front-rear direction It is slided in 788, and the stop component 780 is fixedly coupled to by a pair of screws 790.Cable 772 is clamped in stop component 780 Between slide unit 786, so that the longitudinal movement of cable 772 causes stop component 780 to be moved in front-rear direction 788.It is operating In, user is by the position for inputting adjusting stop component 780 to the second knob 760, to adjust possible backrest hypsokinesis Degree.When backrest module 18 is moved from upright past reclined position, the step selected in multiple steps 782 of stop component 780 connects The rear 792 for touching base construction 262, 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 include the first arm member 806, the second arm 808, Arm support structure 810 and armrest assembly support member 812, they coordinate to form one 4 link assemblies.In the example in the figures, 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 Turning point 820 is pivotally displaced.Second arm member 808 has U-shaped cross-sectional configuration, and includes：First end 822, pivotly Arm support structure 810 is coupled to be pivoted around pivotal point 824；With second end 826, it is pivotally coupled to armrest assembly branch Support part part 812, to be pivoted around pivotal point 828.As shown, 4 link assemblies of arm support component 800 allow armrest assembly 804 It is conditioned between the position K risen completely and the position L reduced completely, wherein the position K risen completely and reducing completely The distance between position L is preferably at least about 4 inches.Each arm component further includes with U-shaped cross-sectional configuration and including the first side First arm of edge point 809 covers component 807, and the second arm set with U-shaped cross-sectional configuration and including second edge portion 813 Component 811, 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 Two arms cover in component 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 Second end 832 of the support construction 810 to allow arm component 20 to be rotated with direction 837 around vertical axis 835.The of arm base construction 802 One end 830 includes main part 833 and from its outwardly extending narrowed bayonet part 834.In assembling, arm base construction The main part 833 of 802 first end 830 and bayonet part 834 be received in control panel 572 and seat support structure 282 it Between, and be fastened onto at this by multiple machanical fastener (not shown), the master that machanical fastener passes through arm base construction 802 Body portion 833 and bayonet part 834, control panel 572 and seat support structure 282 extend.The second end of arm base construction 802 832 pivotly receive 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, under There is cylindrical upper section part 848 and conical lower part 850, the latter to be received in the low portion of sleeve member 842 at end In 846.The upper end 852 of arm support structure 810 is configured to be operatively engaged in vertically arrangement, as described below.Pin What component 854 was located in arm support structure 810 is placed in center, in axially extending hole 856.In the example in the figures, it sells Component 854 is formed from steel, and the upper end 852 of arm support structure 810 is made of metal powder, around the proximal end shape of pin member 854 At, 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 axis To the screw thread hole 855 of extension, by threadably receiving adjusting screw 857 wherein.Arm base construction 802 includes cylinder Second recess portion 858, it and bearing recess portion 836 are separated by wall 860.Helical spring 864 is positioned around the distal end of pin member 854 853 It in the second recess portion 858, and is confined between the wall 860 of arm base construction 802 and washer part 866, so that spiral bullet Spring 864 with the direction of arrow 868 apply a downward power in pin member 854, thus make the lower end of arm support structure 810 with Sleeve member 842 be closely frictionally engaged and the bearing recess portion 836 of sleeve member 842 and arm base construction 802 closely It is frictionally engaged.Adjusting screw 857 is adjustable, to adjust arm support structure 810, sleeve member 842 and arm base construction 802 Between friction it is interactive and increase required for user moves 20 around the pivot access point 835 of arm component with pivotal orientation 837 and apply The power added.Pivot connection between arm support structure 810 and arm base construction 802 allows entire arm component 800 from passing through pivot Access point 835 extends and the line 874 extended in parallel with the central axis of seat assembly 16 872 is inside with 876 direction (Figure 48) It pivots, and is pivoted out from line 874 with 878 direction.Preferably, arm component 20 is pivoted with 876 direction from line 874 and is more than Or it is equal to about 17 °, and pivoted from line 874 with 878 direction and be 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 connects When conjunction, the height of handrail 804 is fixed, this is because the rigid triangle formed between pivotal point 816,824 and 888.Such as Fruit applies downward power F4 to handrail, and the torque of one (Figure 50) counterclockwise then results from locking member 886.This torque will Tooth 890 is 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 manually Release lever or component 898 include pad 900, can upward be moved by user with selectively by the tooth of locking member 886 890 discharge 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 the knob 918 of the 916 pairs of locking members 886 in end of leaf spring 902 upwards 886 around the pivots 888 are with the torque of direction (Figure 51) rotation of (release) clockwise.Leaf spring 902 is also in recess 906 to elongated Lock assembly 892 generates clockwise torque, and also generates a torque to locking member 886, tends to locking member 886 It is rotated with the direction around the pivot 888 of (release) clockwise.This torque tends to tooth 890 being detached from from tooth 884.If tooth 890 is from tooth 884 disengage, and 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 and the recess 926 of the concave portion 920 of locking member 886 connect When conjunction, this engagement prevents the rotary motion in (release) direction clockwise of locking member 886, to which tooth 890 and 884 to be locked to It is engaged with each other 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 The upper bending part 893 (Figure 51) of the elongated lock assembly 892 of component 896/ pushes down on.This generates a downward power, it makes elongated 892 around the pivot 894 of lock assembly rotation.This by the end 922 (Figure 50) of elongated lock assembly 892 to moving up so that its adjacent to The shallow angle position 924 of the concave portion 920 of locking member 886.The displacement of this lock assembly 892 discharges locking member 886, so that locking The direction rotation that is biased to clockwise (release) of the component 886 due to leaf spring 902.This rotation makes tooth 890 be detached from from tooth 884, with The height of armrest assembly is allowed to adjust.

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 saved to be detached from.Specifically, by 812 arm member (806,808), arm support structure 810 and armrest assembly support member shapes At 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 big Body it is arranged between pivot 820 and 824, and their being aligneds, to prevent the downward rotation of 4 connecting rods.Institute as above It states, downward power F4 makes tooth 890 be tightly engaged tooth 884, securely locks the height of handrail.If when applying downward power F4 will be moved to release lever 898, lock assembly 892 is activated when handrail, and the end 922 of elongated lock assembly 892 will be from locking member 886 Concave portion 920 recess 926 be detached from.However, even if lock assembly 892 moves on to releasing position, impose in locking member 886 Torque also remains engaged with tooth 890 and 884.Therefore, the configuration of 4 connecting rods, locking member 886 and geared parts 882 provides one Mechanism, wherein if downward power F4 is operated upon by handrail, 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 is also relative to arm support component 800 associated there can be linearly in retracted position O It is adjusted between expanded position P.Each armrest assembly 804 (Figure 53) includes a handrail housing unit 962, with armrest assembly 812 one of support member simultaneously limits inner space 964.Armrest assembly 804 further includes support plate 966, the main body with plane Part 968, and the pivot bosses 970 for receiving hole 969 with a pair of of machanical fastener and upwardly extending.The sliding block shell of rectangle Body 972 includes the planar section 974 therethrough of hole 976, a pair of from the orthogonally edge of planar section 974 of an ellipse Its side wall 978 being longitudinally extended, and a pair of end wall 981 orthogonally extended from planar section 974 across its end cross.It helps Hand component 804 further includes rotation and linear regulation component 980, and the main part with plane, it defines a upper surface 984 and a lower surface 986.Centrally located hole 988 extends through main part 982, and pivotally receives pivot bosses 970 in wherein.Rotation and linear regulation component 980 further include：Positioned at the hole 990 of a pair of of arc of its opposite end；With at one To two groups of ribs 991, they are laterally separated by, are arranged to arc, being upwardly extended from upper surface 984, and in them it Between limit multiple spine position 993.The main part 996 of the alternative pack 994 of rotation including plane and in wherein centrally located one Include respectively a bonding part 1000 extended downwardly to pliable resilient fingers 998.Each armrest assembly 804 also wraps Arm pad base 1002 and arm pad component 1004 are included, 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 On, so that the bottom surface 1006 of planar section 974 frictionally abuts against top surface 1008, rotation and the linear tune of support plate 966 Component 980 is saved between the side wall 978 and end wall 981 of block case 972 so that the bottom surface of rotation and linear regulation component 986 frictionally engage the planar section 974 of block case 972, and the rotation in rotation and the top of linear regulation component 980 Alternative pack 994.A pair of of machanical fastener, such as rivet 1010, by rotate the hole 999 of alternative pack 994, rotation and The hole 990 of the arc of linear regulation component 980 and the hole 969 of support plate 966 extend, and to be threadably secured to handrail shell Body component 962, thus by support plate 966, the linear fortune of rotation and linear regulation component 980 and the alternative pack 994 of rotation It is dynamic to be fixed relative to handrail shell 962.Then, base portion 1002 and arm pad component 1004 are fixed to block case 972.It is above-mentioned Arrangement allows block case 972, base portion 1002 and arm pad component 1004 to slide in the straight direction, so that armrest assembly 804 can It is conditioned between retracted position O and expanded position P.Rivet 1010 is adjustable, to adjust by support plate 966 and rotation It is applied to the clamping force in block case 972 with linear regulation component 980.Base portion 1002 is centrally located including one, prolongs upwards The projection portion 1020 stretched, and corresponding down-set concave portion (not shown), have a pair of side wall being longitudinally extended.Often A side wall includes multiple ribs and spine position, is similar to previously described rib 991 and spine position 993.In operation, when arm pad 1004 with rectilinear direction when being moved, the spine position of 970 engaging recesses of pivot bosses, to provide tactile feedback to user. In the example in the figures, pivot bosses 970 include slot 1022, and when pivot bosses 970 engage spine position, slot allows pivot bosses 970 end is resiliently deformed, to reduce the abrasion to spine position.The hole of the arc of rotation and linear regulation component 980 990 allow regulating member 980 to be pivoted around the pivot bosses 970 of support plate 966, and allow armrest assembly 804 in in-line position It is adjusted between M and angled position N.In operation, the bonding part of each finger-shaped material 998 of the alternative pack of rotation 1000 are selectively connectable the spine position 992 limited between rib 991, to allow user to be positioned at armrest assembly 804 Selected rotation position, and when armrest assembly 804 is pivotally adjustable tactile feedback is provided to user.

In the foregoing description, those skilled in the art will readily recognize that, not departing from disclosed design also can be right The present invention each component and element make various alternative implementations, to the present invention various modifications may be made.Such modification will by regarding Work 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；

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

Third connecting rod 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

Fourth link component has and is pivotally coupled to the second end of first connecting rod component with around third pivot point First end, and the second end of second connecting rod component is pivotally coupled to 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 the double leval jib component；And

The lower end of the wherein double leval jib component is pivotally supported by arm support structure, pivotly to be transported around the 5th pivotal point Dynamic, so that the upper end of the double leval jib component can move between first position and the second postion, the second position is located at first position Position lateral out.

2. chair assembly as described in claim 1, wherein the first connecting rod component include U-shaped cross-sectional configuration along one length.

3. the lower end of the chair assembly as described in aforementioned any claim, wherein the double leval jib component includes pivot bosses and pivot Axis hole gap it is selected one of them, which includes the another of pivot bosses and pivot hole, and wherein pivot bosses It is received in pivot hole to be pivotally supported the double leval jib component with around the 5th pivot point.

4. the chair assembly as described in aforementioned any claim, further includes：

Locked component can be activated between locked, and in latched position, which is locked to Selected upright position, in unlocked position, which can be conditioned between the position risen and reduced.

5. 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 longitudinally extended with the length for being formed along first connecting rod component and second connecting rod component Inner space；

Third connecting rod component, has a first end and a second end, and first end is pivotally coupled to the first of first connecting rod component End is with around the first pivot point, second end is pivotally coupled to the first end of second connecting rod component to turn around second pivotal point It is dynamic；With

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；

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 is located between the position risen and the position of reduction, wherein the first locking connection And second locking connection can be moved between a latched position and a unlocked position relative to each other, in latched position, the first table Face is engaged at least one of which of multiple teeth, to prevent double leval jib 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 allows double leval jib quilt between the position risen and reduced It adjusts, and

Wherein first locking connection and the second locking connection all have at least one considerable part to be located in the inner space.

6. chair assembly as claimed in claim 5, further comprises：

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.

7. for the armrest assembly of office chair, which includes：

With cushion external component mounted thereto；

It is configured to be fixed to the internal part of office chair structure, which has the tooth being provided thereon；

Upper member and lower member, the two extend between internal part and external component, and with internal part and outside portion Part is pivotly coupled to form a double leval jib；

Vertical adjusting lock set is used to lock height of the cushion relative to internal part；

The vertical adjusting lock set includes：

Moveable releasing parts；

The actuator component shifted between locked when the releasing parts move,

The actuator component limits a cardinal extremity；

Pivotable locking member, with teeth, those teeth are selectively engaged the tooth on the internal part of double leval jib；With

Spring, by actuator component bias toward latched position, and also by the past disengaging of the tooth bias of pivotable locking member With the engagement of the tooth on the internal part of double leval jib；

Wherein the first concave portion of the cardinal extremity shift-in locking member of actuator component, to allow the tooth of locking member to move to be detached from With the engagement of the tooth of the internal part of double leval jib；With

Second lock, in locking member include one lock the second concave portion, when downward power is applied to cushion, second Concave portion receives the end of actuator component and prevents the movement of locking member.

8. armrest assembly as claimed in claim 7, wherein first concave portion include shallow V-arrangement surface.

9. claim 7 and 8 it is any as described in armrest assembly, wherein those teeth on the internal part of double leval jib are formed The arc of protrusion.

10. claim 7-9 it is any as described in armrest assembly, the wherein actuator component is to be pivotally coupled to top Component, and when the cardinal extremity of actuator component engages the second concave portion of the locking, the actuator component and upper member and Internal part forms the connecting rod of rigid triangle.