CN104661567A

CN104661567A - Chair arm assembly

Info

Publication number: CN104661567A
Application number: CN201380049111.5A
Authority: CN
Inventors: 罗伯特·J·拜蒂; 小理查德·N·罗斯兰; N·麦考恩; P·美杜
Original assignee: This Deere Koss Corp
Current assignee: This Deere Koss Corp; Steelcase Inc
Priority date: 2012-09-20
Filing date: 2013-09-19
Publication date: 2015-05-27
Anticipated expiration: 2033-09-19
Also published as: MX2015003446A; HK1206222A1; CN104661567B; AU2013318083A1; CN106235713B; WO2014047255A3; AU2013318083B2; JP2015529144A; MX2022011894A; CA2881887A1; MY169026A; WO2014047255A2; CN106235713A; JP6244364B2; CN108784085A

Abstract

A chair assembly includes a four-bar linkage assembly including a first linkage member, a second linkage member, a third linkage member and a fourth linkage member each pivotably coupled to one another such that the four-bar linkage assembly includes an upper end that is adjustable between raised and lowered positions, and an arm rest assembly adapted to support the arm of a seated user thereon and supported the upper end of the four-bar linkage assembly, wherein a lower end of the four-bar linkage assembly is pivotably supported from an arm support structure for pivotable movement, such that the upper end of the four-bar linkage assembly is moveable between a first position and second position located laterally outward from the first position.

Description

Chair arm component

Technical field

The present invention relates to a kind of chair assembly, particularly relate to office chair arm component, it can vertically and flatly be conditioned, and comprises the arm cap assembly be conditioned pivotly and linearly.

Summary of the invention

An aspect of of the present present invention is to provide a kind of chair assembly, it comprises 4 link assemblies, it comprises the first connecting rod parts with first end and the second end, there are the second connecting rod parts of first end and the second end, 3rd linkage component, it has first end, the first end that it is coupled to first connecting rod parts is pivotly with around the first pivot point, with the second end, the first end that it is coupled to second connecting rod parts is pivotly with around the second pivot point, and the 4th linkage component, it has first end, the second end that it is coupled to first connecting rod parts is pivotly with around the 3rd pivot point, with the second end, the second end that it is coupled to second connecting rod parts is pivotly with around the 4th pivot point, wherein this 4 link assembly comprises lower end and upper end, be conditioned between its position can risen in one and a position reduced.Chair assembly also comprises armrest assembly, its be adapted to support take one's seat user arm thereon, and be supported on the upper end of 4 link assemblies, wherein the lower end of 4 link assemblies is supported pivotly by arm support structure, to move pivotly around Wushu turning point, so that the upper end of 4 link assemblies can be moved between primary importance and the second place, and the second place is positioned at the position of primary importance lateral outer side.

Another aspect of the present invention is to provide a kind of chair assembly, and it comprises 4 link assemblies, and it comprises: first linkage component, and it is with first end, the second end, and the cross-sectional configuration of the U-shaped arranged along its length; Second linkage component, it is with first end, the second end, and the cross-sectional configuration of the U-shaped arranged along its length, and wherein first connecting rod parts and second connecting rod part fits to be formed along the length of the first and second linkage components inner space extending longitudinally; 3rd linkage component, it has first end, and the first end that it is coupled to first connecting rod parts is pivotly with around the first pivot point, and the second end, and the first end that it is coupled to second connecting rod parts is pivotly with around the second pivot point; And the 4th linkage component, it has first end, and the second end that it is coupled to first connecting rod parts is pivotly with around the 3rd pivot point, and the second end, and the second end that it is coupled to second connecting rod parts is pivotly with around the 4th pivot point; Wherein this 4 link assembly comprises lower end and upper end, is conditioned between its position can risen in one and a position reduced.Chair assembly also comprises armrest assembly, its be adapted to support take one's seat user arm thereon, and be supported on the upper end of 4 link assemblies, and locked component, it comprises first locking with first surface and connects, connect with second locking with multiple tooth, those teeth correspond to the multiple upright positions of this 4 connecting rod between the position of rising and the position of reduction, wherein first and second locking connection can be moved relative to each other between a latched position and a unlocked position, in latched position, first surface engages with one of them of multiple tooth, be conditioned between the position of rising and reduce to prevent 4 connecting rods, and in unlocked position, first surface and described multiple tooth are separated by, 4 connecting rods are allowed to be conditioned between the position of rising and reduce thus, and wherein the first and second lockings connect all has at least one substantial portion to be positioned at inner space.

Another aspect more of the present invention is to provide a kind of chair assembly, and it comprises: an arm support structure; Be suitable for the arm armrest assembly thereon cosily supporting the user that takes one's seat; Arm supporting component, it is with the lower end supported by arm support structure, and supporting armrests assembly upper end thereon, is conditioned between the position that the position and that wherein arm supporting component vertically can rise in vertically reduces; With a locked component.Locked component comprises: the first locking connects, its have first surface and multiple tooth at least one of them; Second locking connects, its have first surface and multiple tooth its another, and can move between a latched position and a unlocked position, in latched position, first surface engages with one of them of multiple tooth, is conditioned between the position of rising and reduce with preventing arm supporting component, and in unlocked position, first surface and described multiple tooth are separated by, and allow arm supporting component to be conditioned between the position of rising and reduce thus; Actuation linkages, it operationally locks with first to connect and is coupled and is suitable for move between the first and second positions, and in primary importance, the first locking connection moves to latched position by actuator connection, in the second place, the first locking connection moves to unlocked position by actuator connection; And connect with actuator the actuator component be operationally coupled, wherein can being activated by the user that takes one's seat at least partially of actuator component, thus user is allowed to be connected in by actuator between the first and second positions and to move.

Another aspect of the present invention is a kind of armrest assembly for office chair.Armrest assembly comprises and has cushion external component mounted thereto, and is configured to the internal part being fixed to office chair structure.Internal part has tooth provided thereon.Armrest assembly also comprises upper and lower portion parts, and they extend and it are connected to each other pivotly to form one 4 connecting rods between inside and outside parts.Armrest assembly also comprises vertical adjusting lock set to lock the height of cushion relative to internal part.Vertical adjusting lock set comprises a moveable releasing parts, and the actuator component be shifted between the locking and unlocking position when this releasing parts moves.Actuator component limits a cardinal extremity.Vertical adjusting lock set also comprises moveable Lock Part, and it is with tooth, and they optionally engage the tooth on the internal part of 4 connecting rods.Spring by actuator component bias voltage towards latched position, and by the tooth bias voltage of pivotable Lock Part toward departing from the joint with the tooth on the internal part of 4 connecting rods.First recess of the cardinal extremity shift-in Lock Part of actuator component, departs from the joint with the tooth of the internal part of 4 connecting rods to allow the tooth of Lock Part to move.Armrest assembly also comprises the second lock, and it is with locking second recess in Lock Part, and when downward power is applied to cushion, the end of the second recess receiving actuator parts also prevents the movement of Lock Part.

Of the present inventionly on the other hand be to provide a kind of chair assembly more again, its comprise comprise be configured to support take one's seat the surface-supported seat support structure in user seat thereon, comprise the surface-supported armrest assembly of arm arm thereon for supporting the user that takes one's seat and arm supporting component, it has upper end arm supporting component being supported in the vertical height higher than seat stayed surface, and a lower end, it comprises selected one of them of pivot bosses and pivot hole.Chair assembly also comprises arm support structure, it comprises pivot bosses and pivot hole another, wherein pivot bosses to be received in pivot hole with support arm supporting component pivotly to rotate between primary importance and the second place around a pivotal point, pivot bosses has coniform shape, and wherein this hole has the coniform shape closely corresponding with the shape of pivot bosses.

Another aspect of the present invention is to provide a kind of chair assembly, and it comprises: the arm supporting component with top and bottom; Armrest assembly, its be adapted to support take one's seat user arm thereon and be supported on the upper end of arm supporting component; And arm support structure, its pivotly support arm supporting component to move pivotally around the axle of a substantial orthogonality, so that the upper end of this arm supporting component can around the axle of this substantial orthogonality pivotable between primary importance and the second place, and the second place is positioned at the position of primary importance lateral outer side.Chair also comprises seat support structure, it comprises and is configured to support user's seat stayed surface thereon of taking one's seat, wherein this seat stayed surface comprises longitudinal axis, and wherein arm supporting component upper end from the axial direction of the surface-supported longitudinal axes parallel in this seat mobile be more than or equal to about 22 °, and wherein the upper end of arm supporting component moves inward from this axle with the surface-supported longitudinal axes parallel in this seat and is more than or equal to about 17 °.

By reference to description below, claim, and accompanying drawing, those skilled in the art will be further understood that and is familiar with these and other feature of the present invention, advantage, and object.

Accompanying drawing explanation

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

Fig. 2 is the rear view of chair assembly;

Fig. 3 is the side view of chair assembly, and it illustrates the position that chair assembly is reducing, and the position of rising shown in broken lines, and the position of seat assembly in retraction and the position of expansion shown in broken lines are shown;

Fig. 4 is the side view of chair assembly, and it illustrates that chair assembly is in stand up position, and reclined position shown in broken lines;

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 spring supporting assembly is shown;

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

Fig. 8 is the side view of backrest module;

Fig. 9 A is the exploded front perspective view of backrest module;

Fig. 9 B is the exploded rear perspective view 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 the sectional view of upper backrest pintle assembly along the XXII-XXII line of Fig. 7;

Figure 13 A is the exploded rear perspective view of upper backrest pintle assembly;

Figure 13 B is the exploded front perspective view of upper backrest pintle assembly;

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

Figure 15 A is the enlarged perspective that comfortable parts and lean on waist assembly;

Figure 15 B is comfortable parts and the rear view by waist assembly;

Figure 16 A is the front perspective view of a pawl component;

Figure 16 B is the rear view of pawl component;

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

Figure 18 A is the perspective view of backrest module, and a part for wherein said comfortable parts is cut;

Figure 18 B is the decomposition diagram of a part for backrest module;

Figure 19 is that a control inputs modular support seat gripper shoe perspective view thereon;

Figure 20 is the perspective view of control inputs assembly, and wherein some element is removed to show its inside;

Figure 21 is the exploded view of control inputs assembly;

Figure 22 is the side view of control inputs assembly;

Figure 23 A is the front perspective view of a backrest supporting structure;

Figure 23 B is the decomposition diagram of backrest supporting structure;

Figure 24 is the side view of this chair assembly, and it illustrates its multiple pivotal point;

Figure 25 is the side perspective view of Control Component, and it illustrates multiple pivotal point associated therewith;

Figure 26 is the sectional view of chair, and it illustrates that backrest is in stand up position, wherein regulates by waist and is set at a neutral setting;

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

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

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

Figure 29 A is the sectional view of chair, and it illustrates backrest hypsokinesis, its middle shell be set to maximum radian by waist portions;

Figure 30 A is the exploded view of a moment arm displaceable members;

Figure 30 B is the exploded view of moment arm displacement driven unit;

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

Figure 32 is the plan view from above of multiple control link;

Figure 33 A is the side perspective view of Control Component, and wherein moment arm displacement member is in low-tension position, and chair assembly is in stand up position;

Figure 33 B is the side perspective view of Control Component, and wherein moment arm displacement member is in low-tension position, and chair assembly is in reclined position;

Figure 34 A is the side perspective view of Control Component, and wherein moment arm displacement member is at high tension position, and chair assembly is in stand up position;

Figure 34 B is the side perspective view of Control Component, and wherein moment arm displacement member is at high tension position, and chair assembly is in reclined position;

Figure 35 is the chart of inclination after the moment of torsion correspondence under low and high-tension set;

Figure 36 is the perspective view of a direct driven unit, and wherein seat gripper shoe is decomposed from it;

Figure 37 is the decomposition diagram of Direct driver assembly;

Figure 38 is the perspective view of a vertical height Control Component;

Figure 39 is the side view of vertical height Control Component;

Figure 40 is the side view of vertical height Control Component;

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

Figure 42 A is the decomposition view of a control inputs assembly;

Figure 42 B is the enlarged perspective of the clutch components of the first control inputs assembly;

Figure 42 C is the decomposition view of control inputs assembly;

Figure 43 is the side perspective view of variable backrest Control Component;

Figure 44 is the perspective view of an arm component;

Figure 45 is the decomposition diagram of arm component;

Figure 46 is the position of the side view of the arm component of the position being in rising, wherein decline shown in broken lines;

Figure 47 is the partial section of arm component;

Figure 48 is the plan view from above of chair assembly, and it illustrates the position of arm component at array, and angled position shown in broken lines;

Figure 49 is the isometric view of arm component, and it comprises a vertical height and regulates lock;

Figure 50 is the isometric view of arm component, and it comprises a vertical height and regulates lock;

Figure 51 is the isometric view of arm component, and it comprises a vertical height and regulates lock;

Figure 52 is the plan view from above of this chair assembly, and it illustrates the armrest assembly in the position at array, and the position of rotation shown in broken lines, and the position of retracting is shown, and the position of expansion shown in broken lines;

Figure 53 is the decomposition diagram of armrest assembly;

Figure 54 is the sectional view of armrest assembly;

Figure 55 is the perspective view of chair assembly;

Figure 56 is the anterior elevational view of chair assembly;

Figure 57 is the first side view of chair assembly;

Figure 58 is the second side view of chair assembly;

Figure 59 is the rearview of chair assembly;

Figure 60 is the plan view from above of chair assembly;

Figure 61 is the bottom plan view of chair assembly;

Figure 62 is the perspective view of arm component;

Figure 63 is the anterior elevational view of arm component;

Figure 64 is the first side view of arm component;

Figure 65 is the second side view of arm component;

Figure 66 is the lateral side view of arm component;

Figure 67 is the plan view from above of arm component; And

Figure 68 is the face upwarding view of arm component.

Detailed description of the invention

In order to object described herein, term " on ", D score, " right side ", " left side ", " afterwards ", " front ", " vertically ", " level " and their derivative words should relate to the present invention directed as Fig. 1.It is to be understood, however, that the present invention can take various alternative orientation and sequence of steps, unless there is contrary regulation clearly.Also should be understood that shown in the drawings, and the specific equipment and process described in the following description, be the exemplary embodiment of the inventive concept that appended claim limits.Therefore, the concrete dimension relevant to embodiment disclosed herein and other physical characteristic should not be considered to restrictive, clearly state in this way except in non-claimed.The various elements of embodiment disclosed herein can be described to operationally be coupled each other, comprising element coupled to each other directly or indirectly.In addition, the arrangement of various seats contained in used here " chair " word, comprises office chair, car seat, household seat, stadium seat, movie seat etc.

Reference number 10 (Fig. 1 and 2) generally indicates implements a chair assembly of the present invention.In the example in the figures, chair assembly 10 comprises the base assembly 12 of the foot wheel abutting the floor surface 13 supported, the control supported by the base assembly 12 of foot wheel or supporting component 14, the seat assembly 16 be operationally coupled with Control Component 14 separately and backrest module 18, and a pair arm component 20.Control Component 14 (Fig. 3) is operationally coupled with base assembly 12, so that this seat assembly 16, backrest module 18 and arm component 20 vertically can be conditioned between the position A reduced completely and the position B risen completely, and around vertical axle 21 with direction 22 by pivotable.Seat assembly 16 is operationally coupled with Control Component 14, so that this seat assembly 16 longitudinally can be regulated between expanded position D in complete retracted position C with completely relative to this Control Component 14.Seat assembly 16 (Fig. 4) and backrest module 18 are operationally with Control Component 14 and with coupled to each other, can move between reclined position F completely in a complete stand up position E and to make backrest module 18, and make seat assembly 16 can move between reclined position H completely in a complete stand up position G and further, it corresponds to the complete stand up position E of backrest module 18 and complete reclined position F separately.

Base assembly 12 comprises multiple pedestal arm 24, and its radial extension is also separated by around hollow central post 26, and 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 this base assembly 12 is shown as including a multi-arm pedestal assembly, indicate here, other suitable supporting construction can be adopted, the post including but not limited to fix, the arrangement of multiway, the seat supporting component of vehicle, etc.

Described seat assembly 16 (Fig. 5) comprises the seat gripper shoe 32 of relative stiffness, and it has: leading edge 34; Trailing edge 36; And a pair C shape guide rail 38, which defines the lateral margin of seat gripper shoe 32, and extend between leading edge 34 and trailing edge 36.Seat assembly 16 also comprises an easily curved resilient seat shell body 40, and it has a pair retrousse lateral part 42 and a retrousse rear portion 44, and it cooperatively interacts to form a roughly recessed shape upwards arranged.In the example in the figures, seat housing 40 is made up of material such as the thermoplastic elastomer (TPE) (TPE) that phase commute is curved.In assembling, seat shell body 40 is fixed and is sandwiched between seat gripper shoe 32 and plastics, easily curved resilient seat dish 46, and seat dish is fixed to seat gripper shoe 32 by multiple machanical fastener.Seat dish 46 comprises leading edge 48, trailing edge 50, the lateral margin 52 extended between leading edge 48 and trailing edge 50, top surface 54 and basal surface 56, and they coordinate to form a roughly recessed shape upwards arranged.In the example in the figures, seat dish 46 comprises multiple groove 58 extending longitudinally, and it extends forward from trailing edge 50.Groove 58 works in coordination to limit multiple finger 60 in-between, and each finger 60 is individually easily curved, flexible.Seat dish 46 also comprises the elongated hole gap 62 of multiple transversal orientation, and it is positioned near leading edge 48.Hole 62 is worked in coordination with the overall mutabililty in its increase seat, region dish 46, and the special front part 64 of seat dish 46 that allows bends in vertical direction 66 relative to the backward part 68 of seat dish 46, as discussed further below.Seat assembly 16 also comprise rest seat dish 46 top surface 54 on and the airfoam cushion parts 70, the fabric cover for seat 72 (Fig. 1 and 2) that are absorbed in seat shell body 40, and the upper surface 76 of cushion components 70.One spring supporting assembly 78 (Fig. 5 and 6) is fixed to seat assembly 16, and is suitable for the easy front part 64 supporting seat dish 46 curvedly, 66 to bend in the vertical direction.In the example in the figures, spring supporting assembly 78 comprises a support housing 80, and it comprises foam, and has and define one to the lateral part 82 of the arcuate shape be recessed on.Spring supporting assembly 78 also comprises the attachment component 84 of a relative stiffness, and it is laterally extending between the lateral part 82 of support housing 80, and between support housing 80 and the front part 64 of seat dish 46.Support housing 80 and attachment component 84 are fixed to the front part 64 of seat dish 46 by multiple machanical fastener 86.Spring supporting assembly 78 also comprises a pair cantilever spring 88, it has the far-end 90 received by the corresponding hole 92 of attachment component 84 separately, and be fixed to the near-end 94 of seat gripper shoe 32, can 66 bend in the vertical direction to make the far-end 90 of each cantilever spring 88.A pair linear bearing 96 is attached to attachment component 84 regularly and is aimed at its hole 92, with the far-end 90 making linear bearing 96 receive a corresponding cantilever spring 88 slidably.In operation, when the user taken one's seat on seat assembly 16 forward rotate and when applying downward power to its leading edge, cantilever spring 88 works in coordination the front portion 64 allowing seat dish 46, and the whole front part of seat assembly 16 more at large, bends with vertical direction 66.

The back-supported assembly 99 that backrest module 18 (Fig. 7-9B) comprises back frame assembly 98 and supported by it.Back frame assembly 98 comprises the material that is essentially rigidity haply, such as metal, and comprise a laterally extending top frame part 100, one laterally extending bottom frame part 102, with the side frame portions 104 of pair of curved, they extend between top frame part 100 and bottom frame part 102, and are mated to limit opening 106, and it has relatively large top dimension 108 and the bottom dimension 110 of relative narrowness.

Backrest module 18 also comprises an easy flexible plastics coupler body 112 curvedly, it has upper part 114, low portion 116, for surface 122 backward, lateral margin 118, the surface forward 120 extended between upper part 114 and low portion 116 and, wherein the width of upper part 114 is larger than the width of low portion 116 substantially, and low portion 116 reduces downwards to follow the rear portion of frame assembly 98 to face the configuration of aspect substantially.One bottom strengthening part 115 is attached to the hook 117 (Fig. 9 A) of the low portion 116 of coupler body 112.Strengthening part 115 comprises multiple projection 113, and it engages strengthens rib 134 to prevent bottom strengthening part 115 relative to side the moving to opposite side of coupler body 112.Following discussion, the low portion 116 that backrest to be controlled connection 342 (Figure 26) and coupler body 112 in pivotal point or axle 346 by strengthening part 115 is interconnected pivotly.

Coupler body 112 also comprises multiple hook 124 (Figure 10) that is integrally moulded, that extend forward and upwards, and they are separated by the periphery of the upper part 114 of coupler body.Middle or by waist portions 126 vertically between the upper part 114 and low portion 116 of coupler body 112, and comprise multiple laterally extending groove 128, it coordinates to form therebetween multiple laterally extending rib 130.Groove 128 cooperate with each other with in its position for coupler body 112 provides extra mutabililty.The transverse ribs 130 of a pair pair coordinates with vertically extending rib 132, the latter and the former be integrally formed, and be located at the former about horizontal intermediate point.When backrest module 18 is moved on to reclined position F from stand up position E as described below, when coupler body 112 is bent in intermediate position 126, vertical ribs 132 is done in order to transverse ribs 130 to be linked together and to reduce the extends perpendicular between the latter.Coupler body 112 also comprises multiple reinforcement rib 134 be laterally separated by, and its vertical length along coupler body 112 between low portion 116 and mid portion 126 is extending longitudinally.Here indicate, the degree of depth of every bar rib 134 is deepened along every bar rib 134 from mid portion 126, so that the integral rigidity of coupler body 112 increases toward low portion 116 along the length of rib from mid portion 126.

Coupler body 112 also comprises and extending back for a pair, and integrally moulded pivot bosses 138, it forms a part for back pivot assembly 140 on.Back pivot assembly 140 (Figure 11-13B) comprises the pivot bosses 138 of coupler body 112, a pair cap assembly 142, track component 144 around respective pivot bosses 138 and a mechanical fastening component 146.Each pivot bosses 138 comprises pair of sidewalls 148 and spill seat surface 150 backward, and it has the pivot channel 152 vertically extended extended through wherein.Each cap assembly 142 is shaped to closely hold corresponding pivot bosses 138, and the multiple sidewalls 154 comprised corresponding to sidewall 148, with the bearing surface 156 of a spill backward, it comprises the pivot channel vertically extended 143 extended through wherein, and it is suitable for aiming at the groove 152 of corresponding pivot bosses 138.Track component 144 comprises top frame part 100 core 158 that is laterally extending and that abut with it along back frame assembly 98, and is positioned at the bearing surface 160 of a pair arc of its end.Particularly, core 158 comprises Part I 162 and Part II 164, and wherein Part I 162 abuts the front surface of top frame part 100, and Part II 164 abuts the top surface of top frame part 100.Each bearing surface 160 comprises a hole 166 extended through wherein, and it aims at the corresponding sleeve part 168 to back frame assembly 98 one.

In assembling, the corresponding pivot bosses 138 cap assembly 142 being leant around backpanel housing 112 is located and is operationally positioned between coupler body 112 and track component 144, so that between bearing surface 156 seat surface 150 that is sandwiched in corresponding pivot bosses 138 and a bearing surface 160.Mechanical fastening component 146 respectively comprises a bolt 172, and the abutment surface 174 of the round edge of bearing washer 176 is fixed on and being slidably engaged of the inner surface 178 of corresponding pivot bosses 138 by it, and to being threadedly engaged of the corresponding sleeve part 168 of coupler body 112.In operation, upper back pivot assembly 140 allow back-supported assembly 99 relative to back frame assembly pivotally 182 (Fig. 7) with direction 180 (Fig. 8) pivotable.

Back-supported assembly 99 (Fig. 9 A and 9B) also comprises easy flexible comfortable parts 184 (Figure 15 A and 15B) curvedly, and it is attached to coupler body 112 and supports one slidably by waist assembly 186.Comfortable parts 184 comprise upper part 188, low portion 190, a pair lateral part 192, front surface 193 and rear surface 195, wherein upper part 188, low portion 190 and lateral part 192 coordinate to form hole 194, and it receives by waist assembly 186 in wherein.As the clearest display in Fig. 9 B and 14, multiple box-like male parts 196 that comfortable parts 184 periphery comprised around top 188 is separated by, they extend back from rear surface 195.Each box-like male part 196 comprises pair of sidewalls 198 and roof 200, and they coordinate to form an inner space 202.Article one, bar 204 extends between sidewall 198, and separates from rear surface 195.When assembling, comfortable parts 184 (Figure 12-14) are fixed to coupler body 112, this is by being aimed at by the hook 124 of coupler body 112 and being vertically inserted in the inner space 202 of each box-like male part 196, until hook 124 engages corresponding bar 204.Here indicate, the front surface 120 of coupler body 112 and the rear surface 195 of comfortable parts 184 are not having hole or hole near described hook 124 and box-like male part 196 part, thus the comfort of the user providing level and smooth front surface 193 and increase to take one's seat.

Comfortable parts 184 (Figure 15 A and 15B) comprise integrally moulded, and sleeve pipe 206 extending longitudinally, it extends back from rear surface 195, and has the cross-sectional configuration of rectangle.By waist assembly 186 comprise one forward side direction be concave surface with forward vertical for convex surface, easily curved, flexible main part 208 and upwards extend from main part 208 with the support section 210 of its one.In the example in the figures, main part 208 is formed, and vertically along its reduced height, consequently it follows profile and the shape of the hole 194 of comfortable parts 184 to consequently this main part substantially.Support section 210 is received in the sleeve pipe 206 of comfortable parts 184 slidably, so that is vertically between adjustable position I in reducing completely and the position J risen completely by waist assembly 186 relative to the remaining part of back-supported assembly 99.Pawl component 212 optionally engages multiple holes 214 that the length along support section 210 is separated by, thus releasedly on the fixing upright position selected between the position I reduced completely and the position J risen completely by waist assembly 186.Pawl component 212 (Figure 16 a and 16b) comprises a housing parts 216, and it has the engages tab 218 being positioned at its end and offseting backward from the outer surface 220 of housing parts 216.One easy flexible finger 222 curvedly is medially placed in housing parts 216, and comprises a ratchet extended back 224.

When assembling, pawl component 212 (Figure 17) is located in the hole 226 in the upper part 188 of comfortable parts 184, so that the outer surface 220 of the housing parts 216 of pawl component 212 is coplanar with the front surface 193 of comfortable parts 184, and consequently the engages tab 218 of housing parts 216 abuts the rear surface 195 of comfortable parts 184.Then the support section 210 by waist assembly 186 is positioned in the sleeve pipe 206 of comfortable parts 184, so that sleeve pipe 206 is slidably in wherein, and ratchet 224 optionally can engage with hole 214, allow user optimization by the position of waist assembly 186 relative to the back-supported assembly 99 of entirety thus.Particularly, main part 208 by waist assembly 186 comprise a pair outward extending, with its one handle portion 251 (Figure 18 A and 18B), it has C tee section configuration separately, its limits raceway groove 253 in wherein, and raceway groove surrounds the corresponding lateral margin 192 of comfortable parts 184 and the lateral margin 118 of coupler body 112 and along they guiding.

In operation, user by catching wherein one or two of handle portion 251, and along comfortable parts 184 and coupler body 112 with vertical direction sliding handle assembly 251 with adjustment by the relative vertical position of waist assembly 186 relative to coupler body 112.Stopping tab 228 is integrally formed therewith in far-end 230, and from its skew with the end wall of the sleeve pipe 206 of comfortable engagement parts 184, thus the support section 210 limited by waist assembly 186 is relative to the stroke vertically downward of the sleeve pipe 206 of comfortable parts 184.

Backrest module 99 (Fig. 9 A and 9B) also comprises the cushion components 252 with upper part 254 and low portion 256, and wherein low portion 256 reduces with the global shape of corresponding coupler body 112 and comfortable parts 184 along its vertical length and reduces.

Seat assembly 16 and backrest module 18 are operationally coupled to Control Component 14 (Figure 19) and control inputs assembly 260, and are controlled by them.Control Component 14 (Figure 20-22) comprises housing or base construction or ground structure 262, it comprises antetheca 264, rear wall 266, pair of sidewalls 268 and diapire 270, and they are formed integral with one anotherly and coordinate to be formed the inner space 272 of a upward opening.Diapire 270 comprise one be placed in one centre, for allowing cylinder component 28 (Fig. 3) through wherein to receive its hole 273 as described below.Base construction 262 further define up with the pivotal point 274 in front, pivotal point 276 in below and front and up with the pivotal point 278 at rear, wherein Control Component 14 also comprises the seat support structure 282 supporting seat assembly 16.In the example in the figures, seat support structure 282 has the plane configuration of U-shaped substantially, it comprises the arm section 284 extended forward for a pair, it comprises the pivot hole 286 that is positioned at front separately, it is fixed to base construction 262 pivotly by pivot axostylus axostyle 288, to move pivotally around the pivotal point 274 in top and front.Seat support structure 282 also comprises rear portion 290, and it is laterally extending and be mated to form inner space 292 between arm section 284, and base construction 262 is received in the inner.Rear portion 290 comprises the arm mounting portion 294 extended back for a pair, and arm component 20 is attached on it as described below.Seat support structure 282 also comprises control inputs assembly mounting portion 296, and control inputs assembly 260 is attached thereon.Seat support structure 282 also comprises a pair bush assembly 298, and they coordinate to limit pivotal point 300.

Control Component 14 also comprises a backrest supporting structure 302, it has the plane configuration of U-shaped substantially and comprises the arm section 304 extended forward for a pair, it comprises a pivot hole 305 separately and is coupled to base construction 262 pivotly by pivot axostylus axostyle 307, so that backrest supporting structure 302 is around pivotal point 276 pivotable in below and front.Backrest supporting structure 302 comprises rear portion 308, and it coordinates to limit inner space 310 with arm section 304, and it receives base construction 262 in wherein.Backrest supporting structure 302 also comprises the pair of pivot hole 312 arranged along its length, and they coordinate to limit pivotal point 314.Here indicate, in some cases, the part that can be included as backrest supporting structure 302 at least partially of back frame assembly 98.

Control Component 14 also comprises multiple control connection 316, they respectively have and are coupled to seat support structure 282 pivotly with the first end 318 around pivotal point 300 pivotable by pair of pivot pin 321, and the corresponding pivot hole 312 being coupled to backrest supporting structure 302 by pair of pivot pin 324 is pivotly with the second end 322 around pivotal point 314 pivotable.In operation, when chair assembly is by migration reclined position, control connection 316 and control the motion of seat support structure 282 relative to backrest supporting structure 302, the hypsokinesis speed of the former relative the latter, as described below particularly.

As the clearest display in Figure 23 A and 23B, the bottom frame part 102 of back frame assembly 98 is configured to be connected to backrest supporting structure 302 via a Quick Connect Kit 326.Each arm section 304 of backrest supporting structure 302 comprises the installation hole 328 being positioned at its near-end 330.In the example in the figures, Quick Connect Kit 326 comprise the bottom frame part 102 of back frame assembly 98 be configured to comprise the male part part 332 extended forward for a pair, male part part 332 coordinates the raceway groove 334 limited between them, and the near-end 330 of raceway groove 334 receptor arm part 304 and rear portion 308 are in the inner.Each male part part 332 comprises one to the sleeve 336 of downward-extension, and it is aimed at a corresponding hole 328 and is received in wherein.Then machanical fastener (such as screw 338) is screwed in the screw thread of sleeve 336, allows back frame assembly 98 to be connected to Control Component 14 fast thus.

As display the clearest in Figure 24, base construction 262, seat support structure 282, backrest supporting structure 302 and control connection 316 coordinate to form one 4 link assemblies, and it supports seat assembly 16, backrest module 18 and arm component 20.For ease of reference, the associated pivot assembly associated with 4 link assemblies of Control Component 14 is called as follows: be called the first pivotal point 274 with the pivotal point 274 in front up between base construction 262 and base supports structure 282; The second pivotal point 276 is called at the pivotal point 276 in below and front between base construction 262 and backrest supporting structure 302; Pivotal point 300 between the first end 318 controlling connection 316 and seat support structure 282 is called the 3rd pivotal point 300; And the pivotal point 314 between the second end 322 controlling connection 316 and backrest supporting structure 302 is called the 4th pivotal point 314.In addition, the component of Figure 24 chair assembly 10 be in reclined position shown in broken lines, wherein the chair of reclined position reference number with " ' " indicate.

In operation, Control Component 14 4 link assemblies coordinate with when backrest module 184 is moved into reclined position F from stand up position E by seat assembly 16 from stand up position G hypsokinesis to reclined position H, wherein E and F upper and lower in fig. 24 in position represents and shows, and the upper part of backrest module 18 and low portion are as single ground hypsokinesis.Particularly, control connection 316 and be configured and be coupled to seat support structure 282 and backrest supporting structure 302, so that when backrest supporting structure 302 is around the second pivotal point 276 pivotable, seat support structure 282 is around the first pivotal point 274 pivotable.Preferably, seat support structure 302 is about 1/3 of the speed that backrest supporting structure 302 rotates around the second pivotal point 276 to about between 2/3 around the speed that the first pivotal point 274 rotates, more preferably seat support structure is the about half of the speed that backrest supporting structure 302 rotates around the second pivotal point 276 around the speed that the first pivotal point 274 rotates, and most preferably, when backrest module 18 is from complete stand up position E hypsokinesis to angle γ, it is about 18 °, during to complete reclined position F, seat assembly 16 is from complete stand up position G hypsokinesis to angle beta, it is about 9 °, to complete reclined position H.

As display the clearest in Figure 24, no matter when chair assembly 10 is in the position of complete stand up position or hypsokinesis completely, first pivotal point 274 is all the top and the front that are positioned at the second pivotal point 276, because when seat assembly 10 is by hypsokinesis, base construction 262 keeps fixing relative to the floor surface 13 supported.In the process of the whole reclining movement of chair assembly 10, the 3rd pivotal point 300 remains on below and below its relative vertical elevational of the first pivotal point 274.Here indicate further, in the whole reclining movement of chair assembly 10, the distance between the first pivotal point 274 and the second pivotal point 276 keeps the distance be greater than between the 3rd pivotal point 300 and the 4th pivotal point 314.As display the clearest in Figure 25, when chair assembly 10 is in complete stand up position, the central axis extending longitudinally 340 controlling connection 316 forms sharp angle α with seat support structure 282, and when chair assembly 10 is in the position of complete hypsokinesis, they then form sharp angle α '.Here indicate, when chair assembly 10 is moved between its completely upright and complete reclined position, the central axis 340 controlling connection 316 can not rotate and exceed the aligning orthogonal with seat support structure 282.

With further reference to Figure 26, backrest controls connection 342 and comprises front end, and it is connected to seat support structure 282 pivotly in Wushu turning point 344.The rear end 345 of backrest control connection 342 is connected to the low portion 116 of coupler body 112 in the 6th pivotal point 346.6th pivotal point 346 is optional, and backrest controls connection 342 and coupler body 112 also can be fixed to one another rigidly.In addition, pivotal point 346 can comprise a retainer, and its restriction backrest controls connection 342 relative to coupler body 112 rotating in the first and/or second rotation direction.For example, referring to Figure 26, pivotal point 346 can comprise retainer, and it allows the low portion 116 of coupler body 112 to turn clockwise relative to control connection 342.If be tending towards reducing dimension D1 backward/horizontal force be applied to coupler body 112 by waist, above-mentioned configuration allows to become more flat by waist.But retainer can be configured to prevent the low portion 116 of coupler body 112 from rotating in a counter-clockwise direction (Figure 26) relative to control connection 342.This causes when user, is connected 342 and rotates with the angular speed identical with backrest module 18 with the low portion 116 of coupler body 112 during hypsokinesis by the upper part of pushing backrest module 18 in chair.

One cam connects 350 and is also connected to seat support structure 282 pivotly to rotate around pivotal point or axle 344.Cam connects 350 and has a bending lower cam face 352, and it engages the cam face 354 be upward formed in backrest supporting structure 302 slidably.A pair torque spring 356 (also see Figure 18 A and 18B) is to be tending towards increasing angle (Figure 26) mode rotationally backrest is controlled connection 342 and cam connects 350 bias voltages.Those torque springs 356 produce and tend to control the power of connection 342 and (Figure 26) rotating cam connection 350 in a clockwise direction simultaneously with counterclockwise (Figure 26) rotation.Therefore, those torque springs 356 are tending towards increasing the angle between backrest control connection 342 and cam connection 350 retainer 348 on seat support structure 282 limits backrest and controls being rotated counterclockwise to the position shown in Figure 26 of connection 342.Control connection 342 also can be entered in retainer with counter clockwise direction bias voltage by this power.

As discussed above, coupler body 112 is easily curved, particularly compared to the back frame structure 98 of rigidity.It is same that back frame structure 98 is rigidly attached backrest supporting structure 302 as discussed above, and therefore with backrest supporting structure 302 pivotable.The power produced by torque spring 356 upwards push against the low portion 116 of coupler body 112.As discussed above same, those grooves 128 in coupler body structure 112 produce extra mutabililty in the waist supporting part 126 of leaning on of coupler body 112.The power produced by torque spring 356 be also tending towards causing coupler body 112 by waist portions 126 bend forward so that than the region abutting waist portions 126 mutually, there is larger radian by waist portions 126.

As discussed above, the position by waist assembly 186 is vertically adjustable.What the vertical adjustment by waist assembly 186 also adjusted during back hypsokinesis coupler body 112 bend/becomes curved mode.In fig. 26, be transferred in the middle of one or neutral position by waist assembly 186, so that the radian by waist portions 126 of coupler body 112 is also middle or neutral.With further reference to Figure 27, if be conditioned by the upright position of waist assembly 186, angle be reduced, and be reduced by the radian in territory, lumbar region 126.As shown in figure 27, this also causes angle become large, and the global shape of coupler body 112 becomes relatively straight.

With further reference to Figure 28, if be set at by-level (namely by the height of waist assembly 186, as Figure 26), and user's leans back, so by connect and the configuration from Figure 26 to be moved to the configuration (as mentioned above) of Figure 28 by 4 connecting rods that structure 262,282,302,316 and pivotal point 274,276,300,314 limit.This so cause the distance between pivotal point 344 and cam face 354 to increase.This causes angle be increased to about 59.9 ° (Figure 28) from about 49.5 ° (Figure 26).When spring rotates towards the position of opening, the energy of section store in spring is transferred in coupler body 112, thus makes the radian by waist portions 116 of coupler body 112 become larger.Like this, user in chair during leans back, backrest controls connection 342, cam connect 350 and torque spring 356 for providing larger radian, to lower the radian at user back by territory, lumbar region 116.

In addition, when chair is from the inclined position of Figure 26 to the position of Figure 28,234 millimeters are increased to by the distance D between territory, lumbar region 242 and seat 16 from 174 millimeters.When backrest is from the inclined position Figure 26 to the position of Figure 28, also increasing by the dimension D1 between territory, lumbar region 126 and back frame structure 98 of coupler body 112.Therefore, during hypsokinesis, although distance D increases a little, the increase of dimension D1 reduces the increase of dimension D, because the territory, lumbar region 126 of leaning on of coupler body 112 is shifted forward relative to back frame 98.

Referring again to Figure 26, when user is seated at stand up position, the backbone 360 of the user 362 taken one's seat is inclined to the first amount to antecurvature in lumbar region 364.When user is from the position leans back of Figure 26 to the position of Figure 28, the radian of lumbar region 364 is tending towards increasing, and the backbone 360 of user also rotates around the femur 368 of hip joint 366 relative to user a bit.The increase of the radian by territory, lumbar region 126 of the increase of dimension D and coupler body 112 ensure simultaneously the hip joint 366 of user and femur 368 can not seat 16 on slide, and adapt to the radian of lumbar region 364 of backbone 360 of user.

As discussed above, Figure 27 shows the backrest module 18 of chair assembly 10 in stand up position, and wherein the territory, lumbar region 126 of leaning on of coupler body 112 is adjusted to straight position.If backrest module 18 is tilted to the position of Figure 29 from the position of Figure 27, so backrest control connection 342 and cam connection 350 are rotated all in a clockwise direction.But cam connects 350 with slightly two-forty rotation, angle therefore 35.9 ° are become from 31.4 °.Distance D becomes 265 millimeters from 202 millimeters, and angle 24.1 ° are become from 24.2 °.

With further reference to Figure 29 A, if by backrest module 18 hypsokinesis, and be set to high by waist adjustment, so angle be exactly 93.6 °, distance D is then 202 millimeters.

Therefore, when being tilted backwards by backrest, coupler body 112 bends.But, if radian is adjusted to a higher level at first, so lean on territory, lumbar region 126 to be larger significantly from the upright radian increased to reclined position.This is the arrangement considering that the following fact is made: if user back when erectly taking one's seat is the state at an opposing straight at first, so when user's hypsokinesis, the radian at the back of user can not increase so much.Repeat: if the back of user is relatively straight when stand up position, even if also can keep relatively straight during the back hypsokinesis of so user, although from stand up position to reclined position time radian can increase a little.Otherwise if the back of user bends significantly when stand up position, so when this user's hypsokinesis, the radian increase of lumbar region is initially relatively straight user by higher than its back.

A pair spring assembly 442 (Figure 20 and Figure 21) by backrest module 18 from reclined position F toward stand up position E bias voltage.As display the clearest in Figure 22, each spring assembly 442 comprises the cylindrical shell 444 with first end 446 and the second end 448.Each spring assembly 442 also comprises a compression helical spring 450, first male part 452 and the second male part 454.In the example in the figures, the first male part is fixed to the first end 446 of housing 444, and the second male part 454 is fixed to the rod unit 456 extended by helical spring 450.Packing ring 457 is fixed to the far-end of rod unit 458, and abuts one end of helical spring 450, and the other end of helical spring 450 abuts the second end 448 of housing 444.First male part 452 is fixed to backrest supporting structure 302 pivotly by a pivot pin 460, to move pivotally around pivotal point 461, its pivot pin 460 is received in the pivot hole 462 of backrest supporting structure 302, second male part 454 is then be coupled to moment arm displaceable members 466 (Figure 30-32) pivotly by axostylus axostyle 464, with around pivotal point 465 pivotable.Moment arm displaceable members is suitable for, from low-tension setting (Figure 33 A), bias voltage or spring assembly 442 are moved to high-tension setting (Figure 34 A), and the power that bias assembly 442 is applied to backrest module 18 in high-tension setting increases to some extent relative to low-tension setting.

As being shown in Figure 30 A-32, moment arm displaceable members 466 comprises: adjusting part 468; Moment arm displacement link assembly 470, control inputs assembly 260 is operationally coupled to adjusting part 468 and allows operator to be moved between low and high-tension set by bias assembly 442 by it; And regulating accessory part 472, it is suitable for reducing user as mentioned below and moment arm displaceable members 466 is set from low-tension the amplitude putting on the Input Forces control inputs assembly 260 moved to needed for high-tension setting.

Adjusting part 468 comprises pivot pin 467, and it comprises a threaded hole, and it receives threaded adjustment axle 476 in wherein.Adjustment axle 476 comprises first end 478 and the second end 484, and wherein first end 478 extends through the hole 480 of base construction 262, and guides with around a longitudinal axis pivotable by bearing assembly 482.Pivot pin 467 is supported by base construction 262 by a link assembly 469, and link assembly 469 comprises: pair of links arm 471, and pitman arm 471 has separately: first end 473, and it is coupled to the second male part 454 pivotly by pivot pin 464; With the second end 475, it is coupled to base construction 262 with around pivotal point 481 pivotable pivotly by the pivot pin 477 that is received in the pivot hole 479 of base construction 262 pivotly; And a hole 483, it receives the respective end of pivot pin 467.Pivot pin 467 is coupled with pitman arm 471 pivotly along its length.

This moment arm displacement link assembly 470 (Figure 30 A and 30B) is included in the first driving shaft 486 extended between control inputs assembly 260 and the first helical gear assembly 488, and extend between the first helical gear assembly 488 with the second helical gear assembly 492 and the second driving shaft 490 that both are operationally coupled, wherein the second helical gear assembly 492 is connected to adjustment axle 476.First driving shaft 486 comprises first end 496, it is operationally coupled to control inputs assembly 260 by the first universal joint assembly 498, and the second end 500 of the first driving shaft 486 is operationally coupled to the first helical gear assembly 488 by the second universal joint assembly 502.In the example in the figures, the first end 496 of the first driving shaft 486 comprises a female coupling unit 504 of the first universal joint assembly 498, and the second end 500 of the first driving shaft 486 comprises a female coupling unit 506 of the second universal joint assembly 502.First helical gear assembly 488 comprises housing unit 508, and it holds the first helical gear 510 and the second helical gear 512 in wherein.As shown in the figure, the first helical gear 510 comprises the male coupling unit 514 with the second universal joint assembly 502 one.The first end 496 of the second driving shaft 490 is coupled to the first helical gear assembly 488 by the 3rd universal joint assembly 516.The first end 518 of the second driving shaft 490 comprises a female coupling unit 520 of the 3rd universal joint assembly 516.Second helical gear 512 comprises the male coupling unit 522 of the 3rd universal joint assembly 516 and its one.Second end 524 of the second driving shaft 490 comprises multiple spline 526 extending longitudinally, and it matches to the corresponding spline (not shown) extending longitudinally of a coupler part 528.Coupler part 528 is coupled with the second helical gear assembly 492 by second end 524 of the 4th universal joint assembly 530 by the second driving shaft 490.4th universal joint assembly 530 comprises housing unit 532, and it holds: the first helical gear 534 being coupled to coupler part 528 by the 4th cardan universal joint component 530, and is fixed to second helical gear 536 of the second end 484 of adjustment axle 476.Coupler part 428 comprises female male part part, and it receives the male male part part 540 with the first helical gear 534 one.

When assembling, the adjusting part 468 of moment arm displaceable members 466 is operationally supported by base construction 262, and control inputs assembly 260 is operationally supported by the control inputs assembly mounting portion 296 of seat support structure 282.Consequently, when seat support structure 282 is in complete stand up position G and when being moved between reclined position H completely, the relative angle between the adjusting part 468 of control inputs assembly 260 and moment arm displaceable members 466 and distance change.Third and fourth universal joint assembly 516,530 and pattern chain assembly between the splines coordinate, and think that the relative change of these angle and distances compensates.

As the clearest display in Figure 33 A-34B, moment arm displaceable members 466 effect is between low-tension and the setting of high-tension, adjust bias assembly 442.Specifically, Figure 33 A illustrates that bias assembly 442 sets with chair assembly 10 in upright position in low-tension, Figure 33 B illustrates that bias assembly sets with chair assembly 10 in the position of hypsokinesis in low-tension, Figure 34 A illustrates that bias assembly 442 sets with chair assembly in upright position in high-tension, and Figure 34 B illustrates that bias assembly sets with chair assembly 10 in the position of hypsokinesis in high-tension.When chair is in stand up position as being placed in when moment arm displaceable members 466 that low-tension is arranged using the distance 542 measuring gained between the second end 448 of the housing 444 of pivotal point 465 and spring assembly 442, put on the reference of the decrement of spring assembly 442.Distance 542'(Figure 33 B) illustrate with comparing when moment arm displaceable members 466 be in high-tension arrange and chair be in stand up position time, put on the compression stress of the increment of spring assembly 442.User is by moving to high-tension setting to regulate the amount being put on the power backrest supporting structure 302 by bias assembly 442 by moment arm displaceable members 466 from low-tension setting.Particularly, operator is to drive the adjustment axle 476 of adjusting part 468 to rotate the input of control inputs assembly 260 by moment arm displacement link assembly 470, thus pivot axostylus axostyle 467 is advanced along the length of adjustment axle 476, thus changed by joint whole period the compression stress be applied on spring assembly 442 relative to base construction 262 in pivot axostylus axostyle 467.Advance in the groove 544 of pivot axostylus axostyle 467 in the side plate parts 546 being placed in the sidewall 268 being attached to base construction 262.Here indicate, distance 542' when chair assembly 10 is in stand up position when moment arm displaceable members 466 is in high-tension setting is greater than when moment arm displacement member 466 is in distance 542 when low-tension setting and chair are in stand up position, illustrate thus, when moment arm displacement member is in high-tension setting, the compression stress be applied on spring assembly 442 compares when low-tension sets as large.Similarly, distance 543 (Figure 33 B) are greater than distance 543 ' (Figure 34 B), and the biasing force causing bias assembly 442 to apply increases, and backrest module 18 is compeled toward stand up position from reclined position.Here indicate, the change of the biasing force applied by bias assembly 442 corresponds to the change of the bias voltage torsion applied around the second pivotal point 276, and in some configuration, the length or the biasing force that do not change bias assembly 442 also can change bias voltage torsion.

Figure 35 is the chart when backrest supporting structure 302 is moved between reclined position and stand up position around the torsion force of the second pivotal point 276 applying, and backrest supporting structure 302 is compeled toward stand up position from reclined position by this torsion.In the example in the figures, when backrest supporting structure is when in stand up position, moment arm displacement member 466 is in low-tension setting, bias assembly 442 applies the torsion of about 652 in-lbs around the second pivotal point 276, being in that reclined position moment arm displacement member 466 is in when low-tension is arranged when backrest supporting structure is then about 933 in-lbs, causes the change of about 43%.Similarly, when backrest supporting structure is when in stand up position, moment arm displacement member 466 is in high-tension setting, bias assembly 442 applies the torsion of about 1.47E+03 in-lb around the second pivotal point 274, being in that reclined position moment arm displacement member 466 is in when high-tension is arranged when backrest supporting structure is then about 2.58E+03 in-lb, causes the change of about 75%.When backrest supporting structure 302 is moved between upright and reclined position, moment arm displacement member 466 be located at low-tension setting and high-tension setting between, the torsion force that bias assembly 442 applies produces considerable change, and this allows, and overall chair assembly 10 is differing heights, the user of weight provides appropriate back-supported forward.

Regulate accessory part 472 assist operator that moment arm displaceable members 466 is moved to low-tension setting from high-tension setting.Regulate accessory part 472 to comprise: helical spring 548, it is fixed to the antetheca 264 of base construction 262 with mounting structure 550; With snap part 552, it extends around the axostylus axostyle 306 fixing with pitman arm 471, and comprises a buckle part 556, and it limits the hole 558 of the free end 560 catching helical spring 548.Helical spring 548 applies power F on snap part 552 and axostylus axostyle 306 and pitman arm 471 with upwards vertical direction, thus decreases user and moment arm displaceable members 466 must will be applied to when low-tension setting moves to high-tension setting input strength control inputs assembly 260.

As mentioned above, seat assembly 16 is (Fig. 3) that can vertically move between the position C retracted and the position D of expansion relative to Control Component 14.As the clearest display in Figure 19,36 and 37, Direct driver assembly 562 comprises driven unit 564 and link assembly 566, control inputs assembly 260 is coupled with driven unit 564 by the latter, allows user to regulate the linear position of seat assembly by regulating seat assembly 16 relative to the linear position of Control Component 14 thus.In the example in the figures, seat gripper shoe 32 comprises C shape guide rail 38, and it wrapped and the corresponding guide ribs 570 of the control panel 572 of Engagement Control assembly 14 slidably.A pair C shape, connecting rail 574 extending longitudinally is located in corresponding guide rail 38, and is coupled to seat gripper shoe 32.The sleeve member 576 of a pair C shape is extending longitudinally and be positioned between connecting rail 574 and guide ribs 570 in connecting rail 574.Driven unit 564 comprises the rack member 578 with multiple tooth 580 to downward-extension.Driven unit 564 also comprises the tooth bar guide member 582 with C tee section configuration, and it limits raceway groove 584, and it receives rack member 578 slidably in wherein.Tooth bar guide member 582 comprises the gap groove 586 put along its length, and it cooperatively receives parts of bearings 588 in wherein.Alternatively, parts of bearings 588 can be formed and tooth bar guide member 582 1 integral part.Driven unit 564 also comprises driving shaft 590, and it has the first end be coupled and second end 594 with multiple tooth 596 be radially separated by universally with control inputs assembly 260.In assembling, seat gripper shoe 32 is coupled as described above slidably with control panel 572, and wherein rack member 578 is fixed to the downside of seat gripper shoe 32, and tooth bar guide member 582 is fixed in the raceway groove 598 of a upward opening of control panel 572.In operation, by user, by link assembly 566, driven unit 564 is sent to the Input Forces that control inputs assembly 260 applies, thus drives the tooth 596 of driving shaft 590 to prop up the tooth 580 of rack member 578 and cause rack member 578 and seat gripper shoe 32 to be slided relative to tooth bar guide member 582 and control panel 572.

With further reference to Figure 38-40, chair assembly 10 comprises a height adjustment assembly 600, and it allows seat 16 and backrest 18 relative to the vertical adjusting of base assembly 12.Height adjustment assembly 600 comprises the pneumatic linear actuator 28 be vertically disposed in known manner in the central rods 26 of base assembly 12.

A kind of supporting structure 602 is fixed to housing or base construction 262, and the upper part 604 of pneumatic linear actuator 28 is received in the opening 606 of base construction 262 in known manner.Pneumatic linear actuator 28 comprises a control valve 608, and it can be moved downward to discharge pneumatic linear actuator 28, to provide the adjustment of height.Bellcrank 610 has the arm 640 of the arm 630 and horizontal-extending upwards extended, and the latter is configured to the relief valve 608 engaging pneumatic linear actuator 28.Bellcrank 610 is rotatably mounted to support 602.Bellcrank 610 and regulating wheel/bar 620 are operationally connected to each other by cable assembly 612.Cable assembly 612 comprises interior cable 614 and outer cable or sheath 616.Epitheca 616 comprises a ball accessory 618, and it is rotatably received in the spherical socket 622 be formed in support 602.Second ball accessory 624 is connected to one end 626 of interior cable 614.Second ball accessory 624 is rotatably received in the second spherical socket 628 of the arm 630 upwards extended of bellcrank 610, to allow the rotary motion of cable-end during Height Adjustment.

Second end of interior cable 614 or outer end portion 632 bag third wheel 620, and end fitting 634 is connected to interior cable 614.Tension spring 636 is connected to end fitting 634 and seat structure in 638 these points.Spring 636 produces tension force with a direction on interior cable 614, and when valve 608 is released, cable 614 is also shifted with same direction to be rotated by bellcrank 610.Spring 636 does not produce enough power with activated valve 608, but spring 636 produces enough power consequently to be contacted with valve 608 by arm 640 bias voltage of bellcrank 610.Like this, the void caused because component exists tolerance is moved or is loosened and is eliminated.In operation, user's hand rotation regulating wheel 620, thus tension force is produced on interior cable 614.This makes bellcrank 610 rotate, thus causes the arm 640 of bellcrank 610 to be pressed against the valve 608 with actuating pneumatic cylinder 28.One contained spring (not shown) of pneumatic cylinder 28, by valve 608 upwards bias voltage, makes valve 608 move to a non-actuated position after regulating wheel 620 is released.

Control inputs assembly 260 (Figure 19 and 41-43) comprises the first control inputs assembly 700 and the second control inputs assembly 702, they are adapted that the input come from user is conveyed to the chair structural member and functor that are coupled with them separately, and chair structural member and functor are accommodated in housing unit 704.Control inputs assembly 260 comprises backspace and drives assembly 706, safety clutch assembly 708, and knob 710.Mechanism or assembly 706 are driven in backspace, its prevent Direct driver assembly 562 (Figure 36 and 37) and seat assembly 16 when the input not from Control Component 700 in retract and being driven between position C, D of launching.Backspace is driven assembly 706 and is received in the inside 712 of housing unit 704, and comprise adapter 714, it at one end comprises the male part 716 of the universal adapter of the second end 594 being coupled to driving shaft 590 (Figure 37), and comprises splined couplers 717 at the other end.Cam part 718 is coupled with adapter 714 by clutch components 720.Specifically, cam part 718 comprises splined end 722, and it is coupled to rotate with knob 710, and has the cam end 724 of outer cam surface 726.Clutch components 720 comprises a pair spline 723 inwardly arranged, spline engages the splined couplers 717 with cam face 730 slidably, described cam face as described below with outer cam surface 726 cam of cam part 718 engage.Clutch components 720 has the conical clutch surface 719 that the ring 732 that is locked with engaging receives, retaining ring is locked relative to rotating of housing unit 704, and comprising the conical clutch surface 721 of the clutch surface 719 of corresponding clutch components 720, they coordinate to form a cone clutch.Helical spring 734 is by past for the clutch components 720 direction bias voltage engaged with retaining ring 732.

When not inputting, biasing spring 734 forces the trochoidal surface of clutch components 720 to engage with the trochoidal surface of retaining ring 732, thus prevent " return drive "-be namely when not inputting from the first control inputs assembly 700 only by applying power backward or forward to seat assembly 16, by seat assembly 16 in retracting and regulating between position C, D of launching.In operation, operator activates Direct driver assembly 562 through the first control inputs assembly 700, with by seat assembly 16 in retract and launch move between position C, D.Specifically, user puts on the revolving force of knob 710 is be sent to cam part 718 from knob 710.When cam part 718 rotates, the outer cam surface 726 of cam part 718 acts on the cam face 730 of clutch components 720, thus overcome the biasing force of spring 734 and force clutch components 720 to leave bonding station, wherein clutch components 720 departs from retaining ring 732.Then, revolving force is communicated to clutch components 720 so that adapter 714 from cam part 718, and the latter is coupled to Direct driver assembly 762 through link assembly 566.

Here indicate, a small amount of tolerance in the first control inputs assembly 700, when clutch components 720 is moved between joint with disengaging configuration, allow cam part 718 slightly to move (or " rocking ") in linear direction and direction of rotation.The rotating annular damping element 736 comprising thermoplastic elastomer (TPE) (TPE) is positioned at the inside 712 of housing 704, and is attached to clutch components 720.In the example in the figures, damping element 736 is oppressed by the inwall against housing unit 704 and frictionally engages with it.

First control inputs assembly 700 also comprises the second turn-knob 738, and it is adapted to allow user between the position A reduced and the position B of rising, regulate the upright position of chair assembly as described below.

Second control inputs assembly 702 is adapted to regulate the tension force put on when hypsokinesis in backrest module 18, and controls the rear inclination of described backrest module 18.First knob 740 is operationally coupled to moment arm displaceable members 466 by moment arm displacement link assembly 470.Particularly, the second control inputs assembly 702 comprises the universal coupling unit 742 of male, and the be shifted universal coupling unit 504 (Figure 30 and 31) of female of axle 486 of link assembly 470 of itself and moment arm is coupled.

Second knob 760 is adapted to regulate inclination after backrest module 18 through cable assembly 762, and the second knob 760 is operationally coupled to variable back stop assembly 764 (Figure 43) by cable assembly.Cable assembly 762 comprises first and leads the cable pipe 770 that cable structure 766, second leads cable structure 768 and extend between which, and it holds actuation cable 772 slidably in wherein.Cable 772 comprises far-end 774, and it is fixed relative to base construction 262, and the direction bias voltage from helical spring 778 toward 776.Variable back stop assembly 764 comprises: the retainer 780 with multiple vertical staged step 782; Relative to seat assembly 16 by the supporting bracket 784 supported regularly; With slide unit 786, it is coupled to this supporting bracket 784 slidably to slide in fore-and-aft direction 788, and is coupled to this stop component 780 regularly by pair of screws 790.Cable 772 is clamped between stop component 780 and slide unit 786, causes stop component 780 to move at fore-and-aft direction 788 to make vertically moving of cable 772.In operation, user by regulating the position of stop component 780 to the input of the second knob 760, to regulate inclination after possible backrest.When backrest module 18 from upright move toward reclined position time, the trailing edge 792 of step contact base construction 262 selected in multiple steps 782 of stop component 780, to limit inclination after available backrest.

Each arm component 20 (Figure 44-46) comprises an arm supporting component 800, and it is supported pivotly from arm base construction 802, and adjustable ground supporting armrests assembly 804.Arm supporting component 800 comprises the first arm member 806, second arm 808, arm support structure 810 and armrest assembly support component 812, and they coordinate to form one 4 link assemblies.In the example in the figures, the first arm member 806 has U-shaped cross-sectional configuration, and comprises: first end 814, and it is coupled to arm support structure 810 pivotly with around pivotal point 816 pivotable; With the second end 818, it is coupled to armrest assembly support component 812 pivotly, to move pivotally around pivotal point 820.Second arm member 808 has U-shaped cross-sectional configuration, and comprises: first end 822, and it is coupled to arm support structure 810 pivotly with around pivotal point 824 pivotable; With the second end 826, it is coupled to armrest assembly support component 812 pivotly, with around pivotal point 828 pivotable.As shown in the figure, 4 link assemblies of arm supporting component 800 allow armrest assembly 804 to be conditioned between the position K risen completely and the position L reduced completely, and the distance between the position K wherein risen completely and the position L reduced completely is preferably at least about 4 inches.Each arm component also comprises the first arm cover parts 807 having U-shaped cross-sectional configuration and comprise the first marginal portion 809, with have U-shaped cross-sectional configuration and comprise second edge portion 813 second arm cover parts 811, wherein the first arm member 806 is housed inside in the first arm cover parts 807 that second arm member 808 is housed inside in the second arm cover parts 811, with make second edge portion 813 and the first marginal portion 809 overlapping.

Each arm understructure 802 comprises the first end 830 being connected to Control Component 14, and pivotly support arm supporting construction 810 with the second end 832 allowing arm component 20 rotate with direction 837 around vertical axis 835.The first end 830 of arm base construction 802 comprises main part 833 and from its outward extending bayonet socket part 834 narrowed.In assembling, the main part 833 of the first end 830 of arm base construction 802 and bayonet socket part 834 are received between control panel 572 and seat support structure 282, and being fastened onto this place by multiple machanical fastener (not shown), machanical fastener is extended by the main part 833 of arm base construction 802 and bayonet socket part 834, control panel 572 and seat support structure 282.Second end 832 of arm base construction 802 pivotly receptor arm supporting construction 810 in wherein.

As display the clearest in Figure 47, arm base construction 802 comprises the supporting recess 836 of upward opening, and it has cylindrical upper section part 838 and conical lower part 840.Sleeve member 842 is located in supporting recess 836, and is configured similarly with the bottom 840 of supporting recess 836, includes conical portion 846.Arm support structure 810 comprises lower end, and lower end has cylindrical upper section part 848 and conical lower part 850, and the latter is received in the low portion 846 of sleeve member 842.The upper end 852 of arm support structure 810 is configured to operationally engage in vertically arrangement, as described below.Pin parts 854 are located in being placed in central authorities, axially extended hole 856 of arm support structure 810.In the example in the figures, pin parts 854 are formed from steel, and the upper end 852 of arm support structure 810 is made up of metal dust, and its near-end around pin parts 854 is formed, and wherein the combination of upper end 852 and pin parts 854 is encapsulated in outer aluminized coating.The far-end 853 of pin parts 854 comprises axially extended screw thread hole 855, and it by tapped receptor adjustment screw 857 wherein.Arm base construction 802 comprises cylindrical second recess 858, and it and supporting recess 836 are separated by wall 860.Helical spring 864 is located in the second recess 858 around the far-end 853 of pin parts 854, and be confined between the wall 860 of arm base construction 802 and washer part 866, a downward power is applied on pin parts 854 with the direction of arrow 868 to make helical spring 864, make the lower end of arm support structure 810 and sleeve member 842 closely be frictionally engaged thus, and sleeve member 842 is closely frictionally engaged with the supporting recess 836 of arm base construction 802.Adjustment screw 857 is adjustable, with regulating arm supporting construction 810, friction between sleeve member 842 and arm base construction 802 interactive and increase user by arm component 20 pivotally access point 835 move the required power applied with pivotal orientation 837.The whole arm component 800 of pivotally connected permission between arm support structure 810 and arm base construction 802 from extended by pivot access point 835 and the line 874 extended in parallel with the central axis 872 of seat assembly 16 with 876 direction (Figure 48) inwardly pivotable, and from line 874 with 878 the outside pivotable in direction.Preferably, arm component 20 from line 874 with 876 direction pivotable more than or equal about 17 °, and from line 874 with 878 direction pivotable more than or equal about 22 °.

With further reference to Figure 49-51, the vertical height of handrail regulates by rotating 4 connecting rods to realize, and it is formed by the first arm member 806, second arm member 808, arm support structure 810 and armrest assembly support component 812.Geared parts 882 comprises multiple tooth 884, and they are arranged around pivotal point 816 with an arc.Lock Part 886 is pivotally mounted to arm 806 in pivotal point 888, and comprises multiple tooth 890, the tooth 884 of their optionally engaging gear parts 882.When tooth 884 and 890 engages, the height of handrail 804 is fixed, and this is due to the rigid triangle in pivotal point 816, formation between 824 and 888.If apply downward power F4 to handrail, the moment of one counterclockwise (Figure 50) then results from Lock Part 886.Tooth 890 is pushed into and engages with tooth 884 by this moment, thus locks the height of handrail securely.

An elongated lock assembly 892 is rotatably mounted to arm 806 in pivot 894.The polymeric bearing parts 896 of low-frictional force are arranged on the upper sweep 893 of elongated lock assembly 892.As discussed in more detail below, a manual release lever or parts 898 comprise pad 900, and it can be up mobile optionally to be discharged by the tooth 884 of the tooth 890 of Lock Part 886 from geared parts 882 by user, adjusts to allow the vertical height of handrail.

One block of leaf spring 902 comprises first end 904, and it engages the recess 906 being formed in the upper limb 908 of elongated lock assembly 892.Therefore, leaf spring 902 is formed the cantilever making the strong point with the recess 906 of lock assembly 892.The lug 912 upwards extended of elongated lock assembly 892 is received in the elongated groove 910 of leaf spring 902, thus is located relative to lock assembly 892 by leaf spring 902.The knob 918 of end 916 pairs of Lock Parts 886 of leaf spring 902 upwards presses (F1), produces thus and is tending towards Lock Part 886 pivotally 888 moments rotated with the direction (Figure 51) of clockwise (release).Leaf spring 902 also produces clockwise moment in recess 906 to elongated lock assembly 892, and generates a moment to Lock Part 886, and it is tending towards Lock Part 886 pivotally 888 to rotate with the direction of clockwise (release).This moment is tending towards tooth 890 to depart from from tooth 884.If tooth 890 is thrown off from tooth 884, the height of armrest assembly just can be adjusted.

Lock Part 886 comprises a recess or otch 920 (Figure 50), and it receives the tip 922 of elongated lock assembly 892.Recess 920 comprises the first shallow V-shaped part with position, angle 924.Recess also comprises a little recess or recess 926, and one near horizontal, the surface 928 upward of recess 926.

As mentioned above, the moment of leaf spring 902 nucleus formation on Lock Part 886, it tends to tooth 890 to depart from from tooth 884.But, when the tip of elongated lock assembly 892 or when holding 922 to engage with the recess 926 of the recess 920 of Lock Part 886, this engages the rotary motion preventing clockwise (release) direction of Lock Part 886, thus is locked to by tooth 890 and 884 and is engaged with each other and prevents the height of handrail from regulating.

Want release arm assembly to regulate for the height of handrail, user then by pad 900 against a little leaf spring 899 to pull-up (Figure 50).Releasing parts 898 rotates around the axle 897 extended with fore-and-aft direction, and the inner of manual release lever 898 pushes away downwards against the upper sweep 893 (Figure 51) of the elongated lock assembly 892 of parts of bearings 896/.This produces a downward power, and it makes elongated lock assembly 892 pivotally 894 rotate.The end 922 (Figure 50) of elongated lock assembly 892 upwards moves by this, so that it is adjacent to the position, shallow angle 924 of the recess 920 of Lock Part 886.The displacement release Lock Part 886 of this lock assembly 892, thus Lock Part 886 is because the bias voltage of leaf spring 902 is with the direction of clockwise (release) rotation.This rotation makes tooth 890 depart from from tooth 884, regulates to allow the height of armrest assembly.

Armrest assembly is also configured to prevent height adjusting member during downward power F4 (Figure 50) is applied to armrest pad 804 from departing from.Particularly, due to 4 connecting rods that arm member (806,808), arm support structure 810 and armrest assembly support component 812 are formed, downward power F4 will be tending towards pivotal point 820 is moved toward pivotal point 824.But elongated lock assembly 892 is arranged between pivot 820 and 824 roughly, with they being aligneds, thus prevent the downward rotation of 4 connecting rods.As mentioned above, downward power F4 makes tooth 890 closely soldered tooth 884, locks the height of handrail securely.If activate release lever 898 when applying downward power F4 to during handrail, lock assembly 892 will move, and the recess 926 of the recess 920 from Lock Part 886 departs from by the end 922 of elongated lock assembly 892.But even if lock assembly 892 moves on to off-position, the moment imposed on Lock Part 886 also makes tooth 890 and 884 keep engaging.Therefore, the configuration of 4 connecting rods, Lock Part 886 and geared parts 882 provides a mechanism, if wherein downward power F4 is operated upon by handrail, then the height that can not carry out handrail regulates.

As the clearest display in Figure 52 and 53, each armrest assembly 804 is that adjustable ground is supported by the arm supporting component 800 be associated, so that armrest assembly 804 can around pivotal point 960 inwardly and outwards pivotable between the position M and the position N of pivotable of array.Each armrest assembly is also to regulate between retracted position O and expanded position P linearly relative to arm supporting component 800 associated with it.Each armrest assembly 804 (Figure 53) comprises a handrail housing unit 962, and itself and armrest assembly support component 812 one also limits inner space 964.Armrest assembly 804 also comprises gripper shoe 966, and it has the main part 968 of plane, and the pivot bosses 970 that there is a pair machanical fastener reception hole 969 and upwards extend.The hole 976 that the block case 972 of rectangle includes an ellipse run through planar section 974 wherein, a pair from planar section 974 orthogonally along its sidewall 978 extending longitudinally, and a pair strides across from planar section 974 end wall 981 that its end cross extends orthogonally.Armrest assembly 804 also comprises rotation and linear regulation parts 980, and it has the main part of plane, which defines a upper surface 984 and a lower surface 986.The hole 988 being positioned at central authorities extends through main part 982, and receives pivot bosses 970 pivotally in wherein.Rotation and linear regulation parts 980 also comprise: the hole 990 being positioned at a pair arc of its opposite end; Two groups of ribs 991 in a pair, they are laterally separated by, arrange, upwards extend from upper surface 984 arc, and between them, limit multiple sour jujube position 993.The alternative pack 994 rotated comprise plane main part 996 and in the curved resilient fingers 998 of the commute being wherein positioned at center, it comprises one separately to the bonding part 1000 of downward-extension.Each armrest assembly 804 also comprises arm pad base 1002 and arm pad parts 1004, and the latter is overmolded on base portion 1002.

In assembling, gripper shoe 966 is positioned on handrail housing unit 962, block case 972 is in gripper shoe 966, so that the basal surface 1006 of planar section 974 frictionally abut against gripper shoe 966 top surface 1008, rotate and linear regulation parts 980 between the sidewall 978 and end wall 980 of block case 972 to rotate and the basal surface 986 of linear regulation parts frictionally engages the planar section 974 of block case 972, and the alternative pack 994 of rotation above rotation and linear regulation parts 980.A pair machanical fastener, as rivet 1010, by rotate alternative pack 994 hole 999, to rotate and the hole 990 of arc of linear regulation parts 980 and the hole 969 of gripper shoe 966 extend, and be fixed to handrail housing unit 962 with screw thread, thus by gripper shoe 966, to rotate and linear regulation parts 980 and the linear movement of alternative pack 994 that rotates are fixed relative to handrail housing 962.Then, base portion 1002 and arm pad parts 1004 are fixed to block case 972.Above-mentioned arrangement allows that block case 972, base portion 1002 and arm pad parts 1004 slide in the straight direction, so that armrest assembly 804 can be conditioned in spinning out between position O and expanded position P.Rivet 1010 is adjustable, to regulate by gripper shoe 966 and to rotate and linear regulation parts 980 put on clamping force in block case 972.Base portion 1002 comprise one be positioned at center, the bossing 1020 that upwards extends, and the recess (not shown) of corresponding downward setting, it has a pair sidewall extending longitudinally.Each sidewall comprises multiple rib and sour jujube position, is similar to previously described rib 991 and sour jujube position 993.In operation, when arm pad 1004 is moved with rectilinear direction, the sour jujube position of pivot bosses 970 engaging recesses, thus provide tactile feedback to user.In the example in the figures, pivot bosses 970 comprises groove 1022, and when pivot bosses 970 engages sour jujube position, groove allows the end of pivot bosses 970 to be flexibly out of shape, thus reduces the wearing and tearing to sour jujube position.The hole 990 of the arc of rotation and linear regulation parts 980 allows adjustment member 980 around pivot bosses 970 pivotable of gripper shoe 966, and allows armrest assembly 804 to be adjusted between the position M and angled position N of array.In operation, the bonding part 1000 of each finger piece 998 of the alternative pack rotated optionally is engaged in the sour jujube position 992 limited between rib 991, thus allow user armrest assembly 804 to be positioned the position of rotation selected, and provided tactile feedback when armrest assembly 804 regulates rotationally to user.

A kind of enforcement illustration of chair assembly is retouched with multiple view and is shown, comprising stereogram (Figure 55), front view (Figure 56), the first side view (Figure 57), the second side view (Figure 58), rearview (Figure 59), plan view from above (Figure 60) and face upwarding view (Figure 61).A kind of enforcement illustration of arm component is retouched with multiple view and is shown, comprising stereogram (Figure 62), front view (Figure 63), the first side view (Figure 64), the second side view (Figure 65), rearview (Figure 66), plan view from above (Figure 67) and face upwarding view (Figure 68).

In explanation above, those skilled in the art will readily understand, do not depart from disclosed design and also can do various substituting enforcement, various amendment is done to the present invention each component of the present invention and element.Such amendment all will be considered and be included in appended claim, unless these claims clearly state really not so by its word.

Claims

1. a chair assembly, it comprises:

Double leval jib assembly, it comprises:

There are the first connecting rod parts of first end and the second end;

There are the second connecting rod parts of first end and the second end;

Third connecting rod parts, its have be coupled to first connecting rod parts pivotly first end with the first end around the first pivot point, and the first end being coupled to second connecting rod parts is pivotly with the second end around the second pivot point; With

Double leval jib parts, its have be coupled to first connecting rod parts pivotly the second end with the first end around the 3rd pivot point, and the second end being coupled to second connecting rod parts is pivotly with the second end around the 4th pivot point;

Wherein this double leval jib assembly comprises lower end and upper end, is conditioned between its position can risen in one and a position reduced;

Armrest assembly, its be suitable for supporting take one's seat user arm thereon, and be supported on the upper end of double leval jib assembly; And

Wherein the lower end of double leval jib assembly is supported pivotly by arm support structure, and to move pivotly around Wushu turning point, so that the upper end of double leval jib assembly can be moved between primary importance and the second place, and the second place is positioned at the position of primary importance lateral outer side.

2. chair assembly as claimed in claim 1, wherein these first connecting rod parts comprise U-shaped cross-sectional configuration along one length.

3. chair assembly as claimed in claim 2, wherein these second connecting rod parts comprise U-shaped cross-sectional configuration along one length, and wherein first connecting rod parts and second connecting rod part fits to be formed along the length of the first and second linkage components inner passage extending longitudinally.

4. the chair assembly as described in aforementioned arbitrary claim, wherein these third connecting rod parts comprise arm support structure at least partially.

5. the chair assembly as described in aforementioned arbitrary claim, wherein these double leval jib parts comprise armrest assembly at least partially.

6. the chair assembly as described in aforementioned arbitrary claim, wherein the lower end of this double leval jib assembly comprise pivot bosses and pivot hole selected one of them, this arm support structure comprises another of pivot bosses and pivot hole, and wherein pivot bosses be received in pivot hole with to support this double leval jib assembly pivotly with around the 5th pivot point.

7. chair assembly as claimed in claim 6, wherein pivot bosses is conical, and wherein this pivot hole is conical, and cooperatively receives this pivot bosses in wherein.

8. as claim 6 and 7 arbitrary as described in chair assembly, wherein this arm support structure comprises this pivot hole.

9. as claim 6-8 arbitrary as described in chair assembly, wherein apply frictional force between this pivot bosses and this pivot hole, with this, this double leval jib assembly is held in the select location be between primary importance and the second place, and wherein except this frictional force, this double leval jib assembly is not held in this select location by other mechanical means any.

10. as claim 6-9 arbitrary as described in chair assembly, wherein this pivot bosses and this pivot hole are by towards each other with spring-biased.

11. as the chair assembly of claim 10, and the frictional force wherein between this pivot bosses and this pivot hole regulates by mechanical means.

12. chair assemblies as described in aforementioned arbitrary claim, it comprises further:

Locked component, it can activated between locked, and in latched position, this double leval jib is locked to selected upright position, and in unlocked position, this double leval jib can be conditioned between the position of rising and reduce.

13. as the chair assembly of claim 12, and wherein these third connecting rod parts comprise locked component at least partially.

14. chair assemblies as described in aforementioned arbitrary claim, wherein this armrest assembly can the upper part of double leval jib assembly relatively be regulated pivotally.

15. as the chair assembly of claim 14, and wherein this armrest assembly can the upper part of double leval jib assembly relatively longitudinally be regulated.

16. chair assemblies as described in aforementioned arbitrary claim, wherein this double leval jib assembly regulates more than or equals about 35 ° between the position of rising and the position of reduction.

17. chair assemblies as described in aforementioned arbitrary claim, wherein the upper end of this double leval jib assembly between primary importance and the second place mobile more than or equal about 38 °.

18. chair assemblies as described in aforementioned arbitrary claim, it comprises further:

Seat support structure, it comprises and is configured to support user's seat stayed surface thereon of taking one's seat, and wherein this seat stayed surface comprises a longitudinal axis;

Wherein this double leval jib assembly upper end from the axial direction of the surface-supported longitudinal axis in seat mobile more than or equal about 22 °.

19. chair assemblies as described in aforementioned arbitrary claim, wherein the upper end of this double leval jib assembly moves inward more than from the axle with the surface-supported longitudinal axis in seat or equals about 17 °.

20. chair assemblies as described in aforementioned arbitrary claim, wherein this armrest assembly can be regulated pivotally relative to this double leval jib assembly.

21. as the chair assembly of claim 20, and wherein this armrest assembly can be regulated linearly relative to this double leval jib assembly.

22. chair assemblies as described in aforementioned arbitrary claim, wherein this armrest assembly can be regulated linearly relative to this double leval jib assembly.

23. 1 kinds of chair assemblies, it comprises:

Double leval jib assembly, it comprises:

First connecting rod parts, its U-shaped cross-sectional configuration that there is first end, the second end and arrange along one length;

Second connecting rod parts, its U-shaped cross-sectional configuration that there is first end, the second end and arrange along one length, and wherein first connecting rod parts and second connecting rod part fits to be formed along the length of the first and second linkage components inner space extending longitudinally;

3rd linkage component, it has first end and the second end, and the first end that first end is coupled to first connecting rod parts is pivotly with around the first pivot point, and the first end that the second end is coupled to second connecting rod parts is pivotly with around the second pivot point; With

4th linkage component, it has first end and the second end, and the second end that first end is coupled to first connecting rod parts is pivotly with around the 3rd pivot point, and the second end that the second end is coupled to second connecting rod parts is pivotly with around the 4th pivot point;

Wherein this double leval jib assembly comprises lower end and upper end, by vertical adjusting between its position can risen in one and a position reduced;

Locked component, it comprises first locking with first surface and connects, connect with second locking with multiple tooth, those teeth correspond to the multiple upright positions of this double leval jib between the position of rising and the position of reduction, wherein first and second locking connection can be moved relative to each other between a latched position and a unlocked position, in latched position, first surface engages with one of them of multiple tooth, be conditioned between the position of rising and reduce to prevent double leval jib, and in unlocked position, first surface and described multiple tooth are separated by, double leval jib is allowed to be conditioned between the position of rising and reduce thus, and

Wherein the first and second lockings connect all has at least one considerable part to be positioned at inner space.

24. as the chair assembly of claim 23, and it comprises further:

First set parts, it holds first connecting rod parts at least in part, and with at least one the first microscler marginal portion;

Second cover parts, it holds second connecting rod parts at least in part, and with at least one microscler second edge portion, its at least in part with the first marginal portion is overlapping, wherein, between the position of rising and reduce, be conditioned period in double leval jib assembly, the first marginal portion and second edge portion move relative to each other.

25. as the chair assembly of claim 24, and wherein the first marginal portion and second edge portion all overlap each other in the position of rising and reduce.

26. as claim 23-25 arbitrary as described in chair assembly, wherein third connecting rod parts comprise the plurality of tooth.

27. as claim 23-26 arbitrary as described in chair assembly, wherein first locking connection be coupled to first connecting rod parts pivotly.

28. as claim 23-27 arbitrary as described in chair assembly, wherein this locked component is biased toward latched position.

29. as claim 23-28 arbitrary as described in chair assembly, wherein this locked component by leaf spring bias voltage toward latched position.

30. as claim 23-29 arbitrary as described in chair assembly, wherein the plurality of profile of tooth camber path.

31. as the chair assembly of claim 30, and wherein the plurality of tooth forms this curved path around the first pivotal point.

32. as claim 23-31 arbitrary as described in chair assembly, the downward power being wherein applied to armrest assembly forces this first surface to engage with at least one of the plurality of tooth.

33. as claim 23-32 arbitrary as described in chair assembly, wherein this armrest assembly is adjustable linearly relative to this double leval jib assembly.

34. as claim 23-33 arbitrary as described in chair assembly, wherein this armrest assembly is laterally adjustable relative to this double leval jib assembly.

35. 1 kinds of chair assemblies, it comprises:

Arm support structure;

Armrest assembly, its be suitable for supporting take one's seat user arm thereon;

Arm supporting component, it has the lower end supported by arm support structure, and supporting armrests assembly upper end thereon, and wherein this arm supporting component can be conditioned between the position of a vertical rise and a position vertically reduced; And

Locked component, it comprises:

First locking connects, and it is with at least one of multiple tooth and first surface;

Second locking connects, it is with another of multiple tooth and first surface, and can move between a latched position and a unlocked position, in latched position, first surface engages with one of them of multiple tooth, is conditioned between the position of rising and reduce with preventing arm supporting component, and in unlocked position, first surface and described multiple tooth are separated by, and allow arm supporting component to be conditioned between the position of rising and reduce thus;

Actuation linkages, it operationally locks with first to connect and is coupled and is suitable for move between the first and second positions, and in primary importance, the first locking connection moves to latched position by actuator connection, in the second place, the first locking connection moves to unlocked position by actuator connection;

And

Connect with actuator the actuator component be operationally coupled, wherein can being activated by the user that takes one's seat at least partially of actuator component, thus allow user to be connected in by actuator between the first and second positions and to move.

36. as the chair assembly of claim 35, and wherein this second locking connects biased toward latched position.

37. as claim 35 and 36 arbitrary as described in chair assembly, wherein this second locking connection by leaf spring bias voltage toward latched position.

38. as claim 35-37 arbitrary as described in chair assembly, wherein this actuator connect comprise leaf spring.

39. as claim 35-38 arbitrary as described in chair assembly, wherein this actuator connects and comprises the abutment surface of arc, and wherein this actuator component abuts this abutment surface that actuator connects.

40. as claim 35-39 arbitrary as described in chair assembly, wherein actuator connect be coupled to arm supporting component pivotly.

41. as claim 35-40 arbitrary as described in chair assembly, wherein first locking connect be coupled to arm supporting component pivotly.

42. as claim 35-41 arbitrary as described in chair assembly, wherein this arm supporting component comprises double leval jib assembly, and it comprises:

With the first connecting rod parts of first end and the second end;

With the second connecting rod parts of first end and the second end;

Third connecting rod parts, it has first end and the second end, and the first end that first end is coupled to first connecting rod parts is pivotly with around the first pivot point, and the first end that the second end is coupled to second connecting rod parts is pivotly with around the second pivot point; And

Double leval jib parts, it has first end and the second end, and the second end that first end is coupled to first connecting rod parts is pivotly with around the 3rd pivot point, and the second end that the second end is coupled to second connecting rod parts is pivotly with around the 4th pivot point.

43. as the chair assembly of claim 42, and wherein these third connecting rod parts comprise the plurality of tooth.

44. as claim 35-44 arbitrary as described in chair assembly, wherein the plurality of profile of tooth camber path.

45. as the chair assembly of claim 44, and wherein arm supporting component is coupled to arm support structure pivotly, and wherein the plurality of tooth forms this curved path around the pivotal point between arm supporting component and arm support structure.

46. as claim 35-45 arbitrary as described in chair assembly, the downward power being wherein applied to armrest assembly forces this first surface to engage with at least one of the plurality of tooth.

47. as claim 35-46 arbitrary as described in chair assembly, wherein this actuator component is placed near armrest assembly, so that the user that takes one's seat can easily touch this actuator component.

48. as claim 35-47 arbitrary as described in chair assembly, wherein this arm supports is adjustable pivotly relative to this arm support structure.

49. as claim 35-48 arbitrary as described in chair assembly, wherein this arm supports is adjustable linearly relative to this arm support structure.

50. for the armrest assembly of office chair, and this armrest assembly comprises:

There is the external component that cushion is mounted thereto;

Be configured to the internal part being fixed to office chair structure, this internal part has tooth provided thereon;

Upper and lower parts, both extend and it are coupled pivotly to form a double leval jib between inside and outside parts;

Vertical adjusting lock set, it is for locking the height of cushion relative to internal part;

This vertical adjusting lock set comprises:

Moveable releasing parts;

The actuator component be shifted between locked when this releasing parts moves, this actuator component limits a cardinal extremity;

Pivotable Lock Part, it is with tooth, and those teeth optionally engage the tooth on the internal part of double leval jib; With

Spring, its by actuator component bias voltage towards latched position, and by the tooth bias voltage of pivotable Lock Part toward departing from the joint with the tooth on the internal part of double leval jib;

Wherein the first recess of the cardinal extremity shift-in Lock Part of actuator component, departs from the joint with the tooth of the internal part of double leval jib to allow the tooth of Lock Part to move; With

Second lock, it comprises locking second recess in Lock Part, and when downward power is applied to cushion, the end of the second recess receiving actuator parts also prevents the movement of Lock Part.

51. as the armrest assembly of claim 50, and wherein this first recess comprises shallow V-arrangement surface.

52. as the armrest assembly of claim 51, wherein this first recess comprises first and second straight in fact surfaces, both intersect each other the one jiao of position limiting this shallow V-arrangement surface, and the second recess of wherein this locking is formed in first straight in fact surface in the position separated from this position, angle.

53. as claim 50-52 arbitrary as described in armrest assembly, wherein this spring comprises leaf spring.

54. as the armrest assembly of claim 53, and wherein this leaf spring produces and acts on this pivotable moment locked.

55. as claim 52 and 53 arbitrary as described in armrest assembly, wherein this leaf spring produces the moment acted on this actuator component.

56. as claim 50-55 arbitrary as described in armrest assembly, those teeth on this internal part of wherein double leval jib form the arc protruded.

57. as claim 50-56 arbitrary as described in armrest assembly, those teeth wherein on this movable Lock Part form recessed arc.

58. as claim 50-57 arbitrary as described in armrest assembly, wherein the cardinal extremity of this actuator component is sharp.

59. as claim 50-58 arbitrary as described in armrest assembly, wherein this actuator component is coupled to upper member pivotly, and when the cardinal extremity of actuator component engages the second recess of this locking, this actuator component and upper member and internal part form the connecting rod of rigid triangle.

60. as claim 50-59 arbitrary as described in armrest assembly, the second recess of wherein this locking is formed in an end of the first recess.

61. 1 kinds of chair assemblies, it comprises:

Base construction, it limits a upper part and the low portion be positioned under this upper part;

Seat support structure, it comprises towards upper seat stayed surface, and it is configured to support and takes one's seat user thereon;

The backrest structure upwards extended, it is with towards front back support surface, and its back being configured to support user is in position upright substantially;

Control to connect, it is with the first end of rear portion being coupled to seat support structure pivotly, and is coupled to second end of rear portion of backrest supporting structure pivotly;

Armrest assembly, it comprises the arm support structure being coupled to seat support structure, this armrest assembly with can up and down movement towards upper arm stayed surface, and be movably coupled to the double leval jib assembly of arm support structure and armrest assembly, wherein this double leval jib assembly comprises:

With the first connecting rod parts of the first and second ends;

With the second connecting rod parts of the first and second ends;

Third connecting rod parts, it has first end and the second end, and its first end of being coupled to first connecting rod parts pivotly of first end is with around the first pivot point, and the first end that the second end is coupled to second connecting rod parts is pivotly with around the second pivot point; And

Double leval jib parts, it has first end and the second end, and the second end that first end is coupled to first connecting rod parts is pivotly with around the 3rd pivot point, and the second end that the second end is coupled to second connecting rod parts is pivotly with around the 4th pivot point;

Wherein first, second and third and four pivotal points limit first, second and third and four turnings of this double leval jib separately, and wherein first and the 4th turning in limiting diagonal distance between the two, move down period this diagonal distance in arm stayed surface and reduce; And

Rigid attachment, its by first and the 4th turning be operationally coupled, thus rigid attachment is placed in compressive state, to stop this diagonal distance to reduce, thus arm stayed surface is locked in the height that user selectes.

62. as the armrest assembly of claim 61, and wherein this arm stayed surface is provided on third connecting rod parts.

63. as claim 61 and 62 arbitrary as described in armrest assembly, wherein these double leval jib parts comprise internal part, and it is provided thereon and be fixed to arm support structure with multiple tooth, and comprises:

Pivotable Lock Part, it is with multiple tooth, and those teeth are optionally engaged in the tooth on the internal part of double leval jib.

64. as claim 61-63 arbitrary as described in armrest assembly, wherein this rigid attachment is contained in the actuator component of movement between the locking and unlocking position, this actuator component limit cardinal extremity; And comprise:

Spring, the tooth of pivotable Lock Part towards latched position, and is biased into the joint departed from the tooth on the internal part of double leval jib by actuator component bias voltage by it;

Wherein the cardinal extremity of actuator component can the first recess of shift-in Lock Part, departs from the joint with the tooth of the internal part of double leval jib to allow the tooth of Lock Part to move.

65. as the armrest assembly of claim 64, and it comprises:

Second lock, it comprises locking second recess in Lock Part, and when downward power is applied to cushion, the cardinal extremity of the second recess receiving actuator parts also prevents the movement of Lock Part.

66. as claim 64 and 65 arbitrary as described in armrest assembly, wherein this first recess comprise shallow V-arrangement surface.

67. as the armrest assembly of claim 66, wherein this first recess comprises first and second straight in fact surfaces, both intersect each other the one jiao of position limiting this shallow V-arrangement surface, and the second recess of wherein this locking is formed in first straight in fact surface in the position separated from this position, angle.

68. as claim 64-67 arbitrary as described in armrest assembly, wherein this spring comprises leaf spring.

69. as claim 64-68 arbitrary as described in armrest assembly, wherein the cardinal extremity of this actuator component is sharp.

70. as claim 65-69 arbitrary as described in armrest assembly, wherein this actuator component is connected to upper member pivotly, and when the cardinal extremity of actuator component engages the second recess of this locking, this actuator component and upper member and internal part form the connecting rod of rigid triangle.

71. 1 kinds of chair assemblies, it comprises;

Seat support structure, it comprises and is configured to support user's seat stayed surface thereon of taking one's seat;

Armrest assembly, it comprises the arm arm stayed surface thereon for supporting the user that takes one's seat;

Arm supporting component, it has upper end and lower end, and arm supporting component is supported in the vertical height higher than seat stayed surface by upper end, lower end comprise pivot bosses and pivot hole selected one of them; With

Arm support structure, it comprises pivot bosses and pivot hole another, wherein pivot bosses to be received in pivot hole with support arm supporting component pivotly to rotate between primary importance and the second place around a pivotal point, pivot bosses has coniform shape, and wherein this hole has the coniform shape closely corresponding with the shape of pivot bosses.

72. as the chair assembly of claim 71, and wherein this arm support structure comprises this pivot hole.

73. as claim 71 and 72 arbitrary as described in chair assembly, wherein between this pivot bosses and this pivot hole, apply frictional force, with this, this arm supporting component is held in the select location be between primary importance and the second place, and wherein except this frictional force, this double leval jib is not held in this select location by other mechanical means any.

74. as claim 71-73 arbitrary as described in chair assembly, wherein this pivot bosses and pivot hole are by biased toward one another.

75. as claim 71-74 arbitrary as described in chair assembly, wherein this pivot bosses and pivot hole by spring members to biased toward one another.

76. as the chair assembly of claim 75, and wherein this spring members comprises helical spring.

77. as claim 75 and 76 arbitrary as described in chair assembly, it comprises further:

The regulation mechanism of the amount of the biasing force regulating this spring members to apply.

78. as claim 71-77 arbitrary as described in chair assembly, it comprises further:

Sleeve member between this pivot bosses and this pivot hole.

79. as the chair assembly of claim 78, and wherein this sleeve member has coniform shape, and it is the shape of corresponding pivot bosses and the shape of pivot hole substantially.

80. as claim 71-79 arbitrary as described in chair assembly, wherein this arm supporting component comprises double leval jib, and it allows the vertical height of armrest assembly relative thereto supporting construction to regulate.

81. as claim 71-80 arbitrary as described in chair assembly, wherein the upper part of armrest assembly opposing arms supporting component is adjustable pivotly.

82. as claim 71-81 arbitrary as described in chair assembly, wherein the upper part of armrest assembly opposing arms supporting component is longitudinally adjustable.

83. as claim 71-82 arbitrary as described in chair assembly, wherein arm supporting component between primary importance and the second place mobile more than or equal about 38 °.

84. as claim 71-83 arbitrary as described in chair assembly, wherein this seat stayed surface comprises longitudinal axis, and wherein arm supporting component from the axial direction of the surface-supported longitudinal axes parallel in this seat mobile be more than or equal to about 22 °.

85. as the chair assembly of claim 84, and wherein this arm supporting component moves inward from this axle with the surface-supported longitudinal axes parallel in this seat and is more than or equal to about 17 °.

86. as claim 71-83 arbitrary as described in chair assembly, wherein this seat stayed surface comprises longitudinal axis, and wherein arm supporting component moves inward from the axle with the surface-supported longitudinal axes parallel in this seat and is more than or equal to about 17 °.

87. 1 kinds of chair assemblies, it comprises;

Arm supporting component, it is with top and bottom;

Armrest assembly, its be adapted to support take one's seat user arm thereon and be supported on the upper end of arm supporting component;

Arm support structure, its pivotly support arm supporting component to move pivotally around the axle of a substantial orthogonality, so that the upper end of this arm supporting component can around the axle of this substantial orthogonality pivotable between primary importance and the second place, and the second place is positioned at the position of primary importance lateral outer side; With

Seat support structure, it comprises and is configured to support user's seat stayed surface thereon of taking one's seat; Wherein this seat stayed surface comprises longitudinal axis; And

Wherein arm supporting component upper end from the axial direction of the surface-supported longitudinal axes parallel in this seat mobile be more than or equal to about 22 °, and wherein the upper end of arm supporting component moves inward from this axle with the surface-supported longitudinal axes parallel in this seat and is more than or equal to about 17 °.

88. as the chair assembly of claim 87, and wherein this arm supporting component comprises double leval jib assembly, and it comprises:

There are the first connecting rod parts of first end and the second end;

There are the second connecting rod parts of first end and the second end;

Third connecting rod parts, it has first end and the second end, and the first end that first end is coupled to first connecting rod parts is pivotly with around the first pivot point, and the first end that the second end is coupled to second connecting rod parts is pivotly with around the second pivot point; With

Wherein the lower end of arm supporting component can be conditioned between the position of a rise and a position reduced.

89. as the chair assembly of claim 88, and wherein these first connecting rod parts comprise U-shaped cross-sectional configuration along one length.

90. as the chair assembly of claim 89, and wherein these second connecting rod parts comprise U-shaped cross-sectional configuration along one length, and wherein first connecting rod parts and second connecting rod part fits to be formed along the length of the first and second linkage components inner passage extending longitudinally.

91. as claim 88-90 arbitrary as described in chair assembly, wherein these third connecting rod parts comprise arm support structure at least partially.

92. as claim 88-91 arbitrary as described in chair assembly, wherein these double leval jib parts comprise armrest assembly at least partially.

93. as claim 87-92 arbitrary as described in chair assembly, wherein the lower end of this arm supporting component comprise pivot bosses and pivot hole selected one of them, this arm support structure comprises another of pivot bosses and pivot hole, and wherein pivot bosses be received pivot hole with to support this arm supporting component pivotly.

94. as the chair assembly of claim 93, and wherein pivot bosses is conical, and wherein this pivot hole is conical, and cooperatively receives this pivot bosses in wherein.

95. as claim 93 and 94 arbitrary as described in chair assembly, wherein this arm support structure comprises this pivot hole.

96. as claim 93-95 arbitrary as described in chair assembly, wherein between this pivot bosses and this pivot hole, apply frictional force, with this, this arm supporting component is held in the select location be between primary importance and the second place, and wherein except this frictional force, this arm supporting component is not held in this select location by other mechanical means any.

97. as claim 93-96 arbitrary as described in chair assembly, wherein this pivot bosses and pivot hole by spring to biased toward one another.

98. chair assemblies as described in one of claim 96 and 97, wherein this frictional force regulates by mechanical means.

99. as claim 90-98 arbitrary as described in chair assembly, it comprises further:

100. as the chair assembly of claim 99, and wherein these third connecting rod parts comprise locked component at least partially.

101. as claim 87-100 arbitrary as described in chair assembly, wherein this armrest assembly can the upper part of opposing arms supporting component be regulated pivotally.

102. as claim 87-101 arbitrary as described in chair assembly, wherein this armrest assembly can the upper part of opposing arms supporting component longitudinally be regulated.

103. as claim 88-102 arbitrary as described in chair assembly, wherein double leval jib assembly regulates more than or equals about 35 ° between the position of rising and the position of reduction.

104. as claim 88-103 arbitrary as described in chair assembly, wherein the upper end of this double leval jib assembly between primary importance and the second place mobile more than or equal about 38 °.