CN206979184U - A kind of armchair structure and seat - Google Patents

Abstract

A kind of armchair structure and seat are the utility model is related to, including：Base, it is configured for connection to chair base component；Support member, the support member are arranged above base；Adaptor, the adaptor are arranged between support member and base, and the both ends of adaptor are rotatablely connected with support member front portion and base front portion respectively；Chair back component, the chair back component are connected with base rear portion by pivoting；Actuator, it is connected between chair back component and support member, when chair back component rotates backward from initial position, is lifted support member by actuator and is moved after making support member；When chair back component resets, support member is reset to initial position further through actuator.Due to the presence of adaptor, support movements amplitude can be made bigger, not by any obstruction, during chair back component reclining, be both moved rearwards, and lifted simultaneously, disclosure satisfy that the comfort level requirement of different crowd.

Description

A kind of armchair structure and seat

Technical field

The technical fields such as seat, swivel chair, office chair are the utility model is related to, more particularly to a kind of armchair structure and seat.

Background technology

Revolving chair chassis, also referred to as Revolving chair tray, an important component being installed in below swivel chair seat cushion, the lifting of seat cushion, are leaned on The elevation angle regulation of the back of the body is all completed by chassis.

Chinese patent literature (the day for announcing：On December 24th, 2014, notification number：CN104223821A a kind of swivel chair) is disclosed Chassis, including base, bracket and seesaw, bracket are arranged in base, and seesaw is arranged in bracket, seesaw using the first bearing pin as turn Activity supporting point, the first bearing pin are connected through bracket and with base, and seesaw front portion prizes bracket by first connecting rod, second connecting rod, the One connecting rod is connected with second connecting rod by the 3rd hinge and the 3rd bearing pin with bracket, and second connecting rod is installed with the second bearing pin and Two bearing pins are connected after passing through or avoiding bracket with base, and rail groove is symmetrically offered in the both sides of bracket, and the first bearing pin is located in In rail groove, the chassis also includes enabling the elasticity reset device that bracket sets back after seesaw prizes movement of bracket.Dress The swivel chair or seat on this standby chassis, according to human body weight, backrest reclining restoring force has corresponding matching so that no matter body weight it is light or The people of weight easily can stand up in reclining reply.

Specifically, the first bearing pin of the patent, the second bearing pin, the 3rd bearing pin, the 4th bearing pin, seesaw, first connecting rod, Two connecting rods form four-point linkage mechanism, form the conduction of power, the chair back is connected and fixed on driving of the seesaw as four-point linkage mechanism Power, human body put on the reply that threeth bearing pin formation of the gravity of seat support by being articulated with bracket is applied to four-point linkage mechanism Power, the driving force and restoring force of four-point linkage mechanism form Antagonistic Relationship.

During human body backward reclining, the second connecting rod of four-point linkage mechanism progressively subtracts with horizontal acute angle Small, then bracket puts on the revolving force component increase of second connecting rod, so as to realize reply of the gravitational load for quadric chain Force square incrementally increases, and is formed and resisted with the driving force that incrementally increases, restoring force to the elastic-restoring force of elasticity reset device according to Bad smaller, applicable crowd's scope is wider, and the lighter or heavier people of body weight easily can stand up in reclining and reply, therefore for every The people of individual different weight can reach most Proper Match restoring force.

Chinese patent literature (the day for announcing：On October 7th, 2015, notification number：CN103108572B) one kind is disclosed to be used for The leaning device of chair includes base, is configured to support the back bracket of back and is configured to the back bracket It is connected to the attachment means of the base.The attachment means include guide rail and guiding piece.One in the guide rail and guiding piece It is individual to be provided in being extended to from backrest bound fraction on the part of pivotally connected part for back bracket, in the pivotally connected part Chair seat can be hinged to by locating the back bracket.Another offer in the guide rail and guiding piece is on the base.When When the back bracket is connected to the base by the attachment means, the back bracket is around the pivotally connected part Pivoting causes the guiding piece and the guide rail to be moved relative to each other, and realizes the pivot connection split-phase for described The movement of base.

Above-mentioned technical proposal is in order to avoid on the rear side of described back and across described back The needs of the part of signal portion extension, and one kind is provided in order to improve comfort level, various constructions are realized to realize that chair leans on The back of the body and the leaning device of the chair seat coordinated movement of various economic factors.The realization of its technical scheme is by the way that whole seat support is lifted into realization backward 's.Its overall construction design is more complicated, and this whole seat support for user, is swung back to the anti-structure lifted Dynamics need it is sufficiently large, this scheme can not be adapted to all people group use.

Utility model content

The purpose of this utility model be in order to overcome the shortcomings of above-mentioned prior art in the presence of, and provide it is a kind of need not Whole seat is lifted backward, it becomes possible to realize that seat is swung back, improve seat comfort degree, meet the seat of various structural coordination motions Chair supporting construction and its application on the seat.People's use of different crowd, different weight can be met, not only solve conventional seat When the entirety of chair is lifted, waist dynamics is sufficiently large, the discomfort brought to user, makes so as to improve different human body The comfort level of used time；And in whole process any user can easily be stood up in reclining and reply, different Position can find comfortable point.

Technical scheme is used by the utility model realizes its purpose of utility model：

A kind of armchair structure, including：

Base, it is configured for connection to chair base component；

Support member, the support member are arranged above base；

Adaptor, the adaptor are arranged between support member and base, and the both ends of adaptor respectively with before support member Portion and the anterior rotation connection of base；

Chair back component, the chair back component are connected with base rear portion by pivoting；

Actuator, it is connected between chair back component and support member, when chair back component rotates backward from initial position, is led to Support member is lifted and moved after making support member by part of overdriving；When chair back component resets, support member is resetted further through actuator To initial position.

The armchair structure, can also be by setting a support member being rotatablely connected with seat front, an adaptor, a chair back Component and an actuator, and chair back component is directly rotatablely connected with base rear end, so as to form a lever connecting rod arm configuration. During use, power that human body is acted on chair back component, rotation connection actuator and chair back component and support member it Between mutually transmit, so as to drive support member realized on base up and down lift, and then realize before and after reclining.Due to depositing for adaptor , support movements amplitude can be made bigger, not by any obstruction, during chair back component reclining, be both moved rearwards, and together When lift；The armchair structure, goes for anyone, nor the limitation of manufacture material be present, as different users In use, the power for lifting whole seat need not be applied, it is possible to realization easily swing back and lean forward, due to different users its The power for the pressure that retreats it is of different sizes, the transmission of power is of different sizes between chair back component and actuator, so realize support member lift Rise and front and rear reclining amplitude in small difference, disclosure satisfy that the comfort level requirement of different crowd.

It is extended preferably, the front end of described support member is bent rearward as human body sitting posture bit architecture, and Support member is rotatablely connected with base in frame structure.

Preferably, described chair back component coordinates the one-piece member of human body back structure setting, described chair back group Part includes a back frame upper bracket, a back frame lower carriage and two side handrails, and described back frame lower carriage, which is integrally extended forward, to be had The attachment structure rotated with base engagement.

Preferably, the Y-shaped structure setting of described base.

Preferably, described base at chair back component switching with being provided with resetting means.

Preferably, described resetting means is a torsion spring member.

It is connected to base and torsion spring seat on chair back component preferably, described torsion spring member includes one and is located at Torsion spring inside torsion spring seat.

Preferably, described torsion spring seat includes a torsion spring front stall and a torsion spring back seat, described torsion spring front stall and torsion spring A pair of switching walls are set respectively on back seat, installation cavity is formed after the switching wall rotation connection on torsion spring front stall and torsion spring back seat, Described torsion spring includes torsion spring body and toggle, and described torsion spring is arranged on installation inside cavity, realizes that torsion resets.

Preferably, described actuator is one group of connecting rod.

Preferably, described connecting rod includes first connecting rod and second connecting rod, described first connecting rod and second connecting rod lead to Cross axis of rotation connection.

Preferably, described first connecting rod and second connecting rod is wherein provided with spacing preiection on any one, it is corresponding Stopper slot is provided with another.

A kind of seat, including：

Armchair structure as described above；

For supporting the base assembly of armchair structure；

The seat cushion being arranged on armchair structure.

Employing design starting point of the present utility model, theory and the beneficial effect of above-mentioned technical proposal is：

The utility model provide firstly a kind of armchair structure, be the lever connecting rod arm knot by one in closed ring-type Structure, by the transmission that power is carried out between chair back component, actuator and support member, it is only necessary to which support member lifts front and rear reclining Meet that human body sitting posture is in the requirement of comfort level degree.

Armchair structure of the present utility model is provided with base and provides more firm support, separately vacantly sets support member Put, and support member front end is rotatablely connected with pan frontward end, chair back component is rotatablely connected with base rear end again；Therefore chair back group is worked as When part rotates, the conduction of power is formed by actuator, to support member with upward power so that support member is lifted up, and human body The gravity for putting on support member forms the restoring force that support member resets, and the driving force of chair back component and the restoring force of support member are formed Antagonistic Relationship, therefore, the lighter or heavier people of body weight easily can stand up in reclining and reply, and it is wider to be applicable crowd's scope.

Further say, be provided with the resetting means that auxiliary reset is carried out to chair back component again, resetting means is at least one Individual reseting pressuring spring, the quantity of reseting pressuring spring can be configured according to indexs such as the body weight of human body, but depositing due to base No matter reseting pressuring spring quantity is several, and resetting means is arranged on base, in the space that connector encloses, and does not take additionally empty Between, make seat monnolithic case more attractive in appearance；So that the size for the power that the armchair structure can apply according to different human body realizes difference The hypsokinesis of degree, to adapt to the needs of different users.

Specifically, when people sits on the seat, human body is gone all out after being applied on chair back component, is passed by chair back component Be delivered to actuator, actuator driving support member is lifted up moving backward, now, chair back component together with connector around base to After rotate, reach reclined position.During people's bench over, the power being applied on chair back component disappears, and chair back component returns in resetting means Travelled forward under the drive of multiple power, now, support member further pushes actuator under human bady gravitational makes its reset, support member Former rest position i.e. initial position is returned to, applicable crowd's scope is wider, different according to user, can set different resets Power, so can apply it is different after go all out, with more versatility.

On the whole, the utility model provides a kind of without adjusting manually, and more humane, the more preferable gravity of versatility is certainly Adapt to seat, according to human body weight, chair back-rest inclination restoring force has corresponding matching so that no matter body weight it is light or weight people can Light reclining, which is replied, stands up.

Furthermore people, during leaning on backward, support member is that seat support also follows the rotation of the chair back to be moved rearwards, and makes chair back waist Portion support all the time be bonded human body back correspondence position, avoid chair back lumbar support depart from human body waist produce waist it is hanging, It it also avoid clothing and produce friction with Chair back.

Brief description of the drawings

Fig. 1 is a kind of structural representation of the utility model armchair structure；

Fig. 2 is the structural representation of another angle of the utility model armchair structure；

Fig. 3 is the utility model armchair structure one-sided configuration reset condition figure；

Fig. 4 is the layback state diagram of the utility model armchair structure one-sided configuration；

Fig. 5 is the utility model armchair structure one-sided configuration layback state sectional view；

Fig. 6 is the utility model armchair structure retroverted state structural representation；

Fig. 7 is a kind of structural representation of stage clip in the utility model；

Fig. 8 is a kind of explosive view of stage clip in the utility model；

Fig. 9 is second of structural representation for the utility model armchair structure；

Figure 10 is the static top view of second of armchair structure of the utility model；

Figure 11 is the layback top view of second of armchair structure of the utility model；

Figure 12 is second of armchair structure one-sided configuration reset condition figure of the utility model；

Figure 13 is second of armchair structure one-sided configuration layback state diagram of the utility model；

Figure 14 is the inactive state figure of second of armchair structure of the utility model；

Figure 15 is the layback state diagram of second of armchair structure of the utility model；

In figure：1st, base, 2, support member, 3, chair back component, 4, connector, 5, support, 6, pivot, 7, actuator, 8, mistake Cross connecting rod, the 9, first position limiting structure, 10, bearing pin, 11, resetting means telescopic chute, 12, pivoted hole, 13, fixed interface arrangment, 14th, limit shaft, 15, spacing elongated hole, 16, resetting means, 17, connecting seat, 18, stage clip body, 19, first connecting rod, 20, connecting rod, 21st, the second position limiting structure, 22, adaptor, 23, torsion spring seat, 24, torsion spring, 51, back frame upper bracket, 52, back frame lower carriage, 53, side Support, 25, connecting rod position limiting structure, 26, bottom plate, 27, side plate, 29, second connecting rod, 30, rotating shaft, 31, spacing hole, 32, spacer pin Axle, 33, torsion spring front stall, 34, torsion spring back seat, 35, switching wall, 36, installation cavity, 37, torsion spring body, 38, toggle, 39, limit Position is raised, and 40, stopper slot, 41, arm, 42, axis hole.

Embodiment

The technical solution of the utility model is described in further detail below by specific embodiment and with reference to accompanying drawing.

Define the reference azimuth of each part of the utility model first, the utility model using seat normal operating condition as With reference to the position where the front of seat is front, and the rear of seat includes chair back component is rear.

Embodiment 1：

In the embodiment shown in Fig. 1, Fig. 2, a kind of armchair structure, including：

Base 1, it is configured for connection to chair base component；Base 1 is preferably metab；Chair base component (is not schemed Show) include support column, the castor of multiple supporting leg and the supporting leg ends radially extended from support column lower end, described support column It can be gas bar.

Support member 2, support member 2 are arranged at the top of base 1, and each one of support member 2 or so, and two support members 2 are anterior even It is integrated and is rotatablely connected with the front portion of base 1；The front end of support member 2 bends to be extended rearward and tied for human body sitting posture position Structure, and support member 2 is rotatablely connected with base 1 in frame structure；Human body sitting posture bit architecture meets prosthesis, human body is sat sense More comfortable, leg is felt good；

Support member 2 is rotatablely connected with the front end of base 1 by a transition connecting rod 8.The both ends of transition connecting rod 8, which are respectively arranged with, is in The connecting rod position limiting structure 25 of arc；One end that support member 2 is connected with transition connecting rod 8 is provided with first corresponding to connecting rod position limiting structure Position limiting structure 9, base 1 at the rotation connection of transition connecting rod 8 with being provided with the second position limiting structure 21.First position limiting structure 9 is arc Spacing preiection, the second position limiting structure 21 are that arc-shaped limit is raised or be spacer pin or be limiting tooth.Second is spacing in the present embodiment Structure 21 is spacer pin (see Fig. 3).

Chair back component 3, including connector 4 and support 5, connector 4 are rotatablely connected with the rear portion of base 1 by pivot 6, support 5 rotate when rotating with follower link 4 around the pivot 6；Connector 4 is equivalent to chair back component 3 and the connection tie of base 1.

Actuator 7, it is connected between the support 5 and support member 2, the corresponding support member 2 of actuator 7, and left and right two Each one of side；Actuator 7 and it is non-self have a driving force, but rely on chair back component 3 to rotate and transmit power；When support 5 is from initial When position rotates backward, support member 2 is lifted by actuator 7；When support 5 resets, further through actuator 7 by support member 2 It is reset to initial position.Support 5 is the one-piece member for coordinating human body back structure setting；Support 5 includes a back frame upper bracket 51st, a back frame lower carriage 52 and two side handrails 53, middle part and the connector 4 of back frame lower carriage 52 are connected.

Base 1 includes a bottom plate 26 and biside plate 27 (see Fig. 5), and the curved structure on anterior-posterior length direction of bottom plate 26 is set Put.Connector 4 takes the shape of the letter U structure setting, and specifically, connector 4 has two arms 41 that interval is oppositely arranged, connector 4 Front end that is, arm 41 and fit in the rear end of base 1 and can relatively rotating be connected.

Two arms 41 of connector 4 and the biside plate 27 of base 1 rotate at cooperation and are respectively arranged with pivoted hole 12, even Fitting 4 is rotatablely connected with base 1 by being arranged on the pivot 6 inside pivoted hole 12.

Base 1 or connector 4 set limited location elongated hole 15 on one of them, corresponding to be provided with limit shaft 14 on another (see Fig. 3, Fig. 5), spacing elongated hole 15 are arranged on the front of pivoted hole 12, and connector 4 realizes drawing for front and rear tilting by limit shaft 14 Lead spacing.The rear end both sides of connector 4 coordinate support 5 to be provided with fixed interface arrangment 13.

As shown in Fig. 2,3,5,7,8, resetting means 16 is provided between base 1 and connector 4；Specifically, dress is resetted It is 2~5 reseting pressuring springs being arranged side by side to put 16；The both ends of reseting pressuring spring are connected with base 1 and connector 4 respectively；Specifically Say, a bearing pin 10 has respectively been horizontally set with base 1 and connector 4, in the both ends difference connect base 1 of reseting pressuring spring, connector 4 Bearing pin 10.Reseting pressuring spring includes a stage clip body 18 and is arranged on the connecting seat 17 at stage clip body both ends, is set on connecting seat 17 There is axis hole 42, described bearing pin 10 is located in the axis hole 42 of connecting seat 17.

Actuator 7 is wholely set with support 5；Again or actuator 7 and the split settings of support 5 and it is fixedly connected.This implementation Actuator 7 is wholely set with support 5 in example.

Actuator 7 is rotatablely connected with support member 2 by one group of connecting rod 20.Connecting rod 20 includes first connecting rod 19 and second connecting rod 29, first connecting rod 19 is fixedly linked with support member 2 by three screws, and second connecting rod 29 is consolidated with actuator 7 by three screws Fixed to be connected, first connecting rod 19 and second connecting rod 29 are rotatablely connected by rotating shaft 30.First connecting rod 19 and second connecting rod 29 are wherein appointed Spacing hole 31 is provided with meaning one, and corresponding to be provided with spacing bearing pin 32 on another, spacing bearing pin 32 is inserted in spacing hole 31 It is interior.

The armchair structure, by setting support member, a chair back component and the actuator being rotatablely connected with seat front, Form a lever connecting rod arm configuration (see Fig. 3, Fig. 4).In use, the power that human body is acted on chair back component, turning Mutually transmitted between the actuator and chair back component and support member of dynamic connection, so as to drive support member to be realized on base up and down Lift, and then reclining before and after realization (see Fig. 5, Fig. 6).

A kind of seat, including：

Above-mentioned armchair structure；

Chair base component；Chair base component is (not shown) include support column, radially extend from support column lower end it is more The castor of individual supporting leg and supporting leg end, support column connect base, described support column can be gas bar.

One is arranged on the seat cushion on armchair structure.

Embodiment 2：

In the embodiment shown in Fig. 9, Figure 10, Figure 11：

A kind of armchair structure, including：

Base 1, it is configured for connection to chair base component；1 Y-shaped structure setting of base.

Support member 2, support member 2 are arranged at the top of base 1；The front end of support member 2 is bent rearward to be extended as people Body sitting posture bit architecture, and support member 2 is rotatablely connected with base 1 in frame structure.

Adaptor 22, adaptor 22 are arranged between support member 2 and base 1, and the both ends of adaptor 22 respectively with support Part 2 is anterior and the front portion of base 1 is rotatablely connected；

Chair back component 3, the chair back component 3 are rotatablely connected with the rear portion of base 1 by pivot 6；

Actuator 7, it is connected between chair back component 3 and support member 2, when chair back component 3 rotates backward from initial position When, support member 2 is lifted by actuator 7 and moved after making support member 2；, will further through actuator 7 when chair back component 3 resets Support member 2 is reset to initial position.

Chair back component 3 coordinates the one-piece member of human body back structure setting, and chair back component 3 includes a back frame upper bracket 51st, a back frame lower carriage 52 and two side handrails 53, back frame lower carriage 52, which is integrally extended forward, to be had and base 1 coordinates what is rotated Attachment structure.

Base 1 at the switching of chair back component 3 with being provided with resetting means 16.Resetting means 16 is a torsion spring member.Torsion spring group Part includes a torsion spring seat 23 being connected on base 1 and chair back component 3, the torsion spring 24 inside torsion spring seat 23.

Torsion spring member includes a torsion spring seat 23 being connected on base 1 and chair back component 3 and in torsion spring seat 23 The torsion spring 24 in portion.

Torsion spring seat 23 includes a torsion spring front stall 33 and a torsion spring back seat 34, is set respectively on torsion spring front stall 33 and torsion spring back seat 34 Put a pair of switching walls 35, the switching wall 35 on torsion spring front stall 33 and torsion spring back seat 34 forms installation cavity 36 after being rotatablely connected, turn round Spring 24 includes torsion spring body 37 and toggle 38, and torsion spring 24 is arranged on inside installation cavity 36, realizes that torsion resets.

Actuator 7 is that one group of connecting rod connecting rod 20 includes first connecting rod 19 and second connecting rod 29, first connecting rod 19 and support member 2 It is fixedly linked, second connecting rod 29 is fixedly linked with actuator 7, and first connecting rod 19 and second connecting rod 29 are rotated by rotating shaft 30 and connected Connect.First connecting rod 19 and second connecting rod 29 are wherein provided with spacing preiection 39 on any one, corresponding to be provided with another Stopper slot 40.

The armchair structure, can also be by setting a support member being rotatablely connected with seat front, an adaptor, a chair back Component and an actuator, and chair back component is directly rotatablely connected with base rear end, so as to form a lever connecting rod arm configuration. (see Figure 14,15) during use, the power that human body is acted on chair back component, rotation connection actuator and chair back component with And mutually transmitted between support member, so as to drive support member realized on base up and down lift, and then realize before and after reclining (see figure 12nd, Figure 13).

This embodiment offers a kind of seat, including：

One armchair structure as described above；

For supporting the base assembly of armchair structure；

The seat cushion being arranged on armchair structure.

Armchair structure described in above-described embodiment, when human body retreats pressure chair back component 3, chair back component 3 is in pressure of inclining Effect is moved backward, and pressure of inclining backward passes down to actuator 7 by chair back component 3, actuator 7 drive support member 2 to On lift and move backward, realize the hypsokinesis of human body and armchair structure；When human body turns forward, the pressure of inclining on chair back component 3 Disappear, resetting means drives chair back component 3 to be reset to initial position.Further say, the armchair structure by transition connecting rod and Cross one group of lever connecting rod mechanism of connecting rod and realize rotation between each component, and carried out by stopping means spacing.Both power is facilitated Apply and transmit, and be make it that the action between each component is more smooth.

The armchair structure and its seat, any material making is may adapt to, is readily applicable to anyone, resetting means It can be configured according to needs such as appearance design, body weights, to meet making for different requirements and different crowd With, and disclosure satisfy that the requirement of human body sitting posture comfort level.

Claims (12)

1. A kind of 1. armchair structure, it is characterised in that including：

   Base, it is configured for connection to chair base component；

   Support member, the support member are arranged above base；

   Adaptor, the adaptor are arranged between support member and base, and the both ends of adaptor respectively with support member it is anterior and The anterior rotation connection of base；

   Chair back component, the chair back component are connected with base rear portion by pivoting；

   Actuator, it is connected between chair back component and support member, when chair back component rotates backward from initial position, passes through drive Support member is lifted and moved after making support member by moving part；When chair back component resets, support member is reset to just further through actuator Beginning position.
2. A kind of 2. armchair structure according to claim 1, it is characterised in that：The front end of described support member is curved rearward Folding is extended as human body sitting posture bit architecture, and support member with base in frame structure rotation connection.
3. A kind of 3. armchair structure according to claim 1, it is characterised in that：Described chair back component coordinates human body back knot The one-piece member that structure is set, described chair back component includes a back frame upper bracket, a back frame lower carriage and two side handrails, described Back frame lower carriage forward integrally be extended have with base engagement rotate attachment structure.
4. A kind of 4. armchair structure according to claim 1, it is characterised in that：The overall Y-shaped structure setting of described base.
5. A kind of 5. armchair structure according to claim 1, it is characterised in that：Described base at chair back component switching with setting It is equipped with resetting means.
6. A kind of 6. armchair structure according to claim 5, it is characterised in that：Described resetting means is a torsion spring member.
7. A kind of 7. armchair structure according to claim 6, it is characterised in that：Described torsion spring member connects respectively including one In the torsion spring seat on base and chair back component and the torsion spring inside torsion spring seat.
8. A kind of 8. armchair structure according to claim 7, it is characterised in that：Described torsion spring seat include a torsion spring front stall and One torsion spring back seat, sets a pair of switching walls on described torsion spring front stall and torsion spring back seat respectively, on torsion spring front stall and torsion spring back seat Switching wall rotation connection after form installation cavity, described torsion spring includes torsion spring body and toggle, the setting of described torsion spring In installation inside cavity, realize that torsion resets.
9. A kind of 9. armchair structure according to claim 1, it is characterised in that：Described actuator passes through one group with support member Link rotatable connects.
10. A kind of 10. armchair structure according to claim 9, it is characterised in that：Described connecting rod includes first connecting rod and the Two connecting rods, first connecting rod are fixedly linked with support member, and second connecting rod is fixedly linked with actuator, described first connecting rod and second Connecting rod is connected by axis of rotation.
11. A kind of 11. armchair structure according to claim 10, it is characterised in that：Described first connecting rod and second connecting rod its In be provided with spacing preiection on any one, it is corresponding to be provided with stopper slot on another.
12. A kind of 12. seat, it is characterised in that including：

    Armchair structure as described in any one of claim 1 to 11；

    For supporting the base assembly of armchair structure；

    The seat cushion being arranged on armchair structure.