CN104138161A - Linkage mechanism for high-supporting-leg seat unit - Google Patents
Linkage mechanism for high-supporting-leg seat unit Download PDFInfo
- Publication number
- CN104138161A CN104138161A CN201310372963.XA CN201310372963A CN104138161A CN 104138161 A CN104138161 A CN 104138161A CN 201310372963 A CN201310372963 A CN 201310372963A CN 104138161 A CN104138161 A CN 104138161A
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- Prior art keywords
- connector
- attached
- footstool
- link gear
- seat portion
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Abstract
The utility model relates to a linkage mechanism for a high-supporting-leg seat unit. The linkage mechanism can supply moving capacity to various types of chairs. For example, the linkage mechanism comprises a combination of all connection pieces favorable for stretching/closing of footstools and hypsokinesis/forerake of a backrest. Furthermore, the linkage mechanism comprises a compact design for a high-supporting-leg chair with lower seat height.
Description
Technical field
The present invention broadly relates to and being designed to user's body bearing in the movable soft furniture/ornament furnishings (motion upholstery furniture) that substantially takes a seat attitude.Movable soft furniture comprises chaise longue, lift pin chair, sofa, twin bench-type seat, sectional furniture, theatre chair, conventional chair and have the chair of sliding seat portion, this class furniture is referred to as to " seat unit " herein.More specifically, the present invention relates to a kind of improved link gear (linkage), it is developed into and is applicable to polytype seat unit, and before this in the art seat unit can be limited to the configuration of link gear.In addition the layback (hypsokinesis) that, improved link gear of the present invention can be used for comprising high supporting leg design and comprises the seat unit of lower height of seat.
Background technology
Existing back-tilting type seat unit, it allows user leg rest is stretched forward and backrest is receded with respect to seat portion.These existing seat units provide three home position/attitudes (for example, closure/curling position standard, non-layback conventionally; Extended position; With layback position).In closing position, seat portion is in the orientation of level substantially, and backrest erectly arranges substantially.In addition,, if seat unit comprises attached one or more footstools of mechanical device (the soft stool of feet), mechanical device can be packed up and footstool can not stretched.In extended position (being often called as TV (" TV ") position), footstool stretches to the place ahead of seat portion, and backrest keeps fully uprightly to allow the occupant of seat unit to see comfily TV.In layback position, backrest is pivoted into backward and becomes obtuse angle relation with seat from extended position, in order to have a rest or sleep.
Some modern seat units in the industry are suitable for the regulating power that provides above-mentioned.Yet, be used in governor motion in these seat units usually not ideal enough when using together with thering is the high supporting leg chair design of lower height of seat.
Summary of the invention
Generally speaking, embodiments of the invention try hard to provide a kind of simple, compact link gear, and it can be suitable for the seat unit of any type substantially, such as the formal chair of high leg-type.In operation, described link gear is suitable for moving between closing position, extended position and layback position.Embodiments of the invention are by appended claim but not limited by content of the present invention.High level overview to each side of the present invention is here provided for this reason, so that overview of the present disclosure to be provided, and introduces the design further describing in detailed description part below and select.Content of the present invention is not intended to indicate key feature or the essential feature of protection theme, is also not intended to isolatedly as the supplementary means of determining the scope of protection theme.
Accompanying drawing explanation
Referring to accompanying drawing, describe exemplary embodiments of the present invention in detail, accompanying drawing is incorporated herein by reference, wherein:
Fig. 1 illustrates according to the in the close position of the embodiment of the present invention and is arranged on the side view of the link gear in seat unit;
Fig. 2 illustrates according to the side view of the link gear in the close position of the embodiment of the present invention;
Fig. 3 illustrates according to the side view of the link gear in extended position of the embodiment of the present invention;
Fig. 4 illustrates according to the side view of the link gear in layback position of the embodiment of the present invention;
Fig. 5 illustrates according to the various views of the various combination of the connecting rod being labeled of the embodiment of the present invention.
The specific embodiment
The theme of the embodiment of the present invention is specifically described as and meets legal requirements at this.But this description itself does not limit the scope of the claims.On the contrary, the technology that protection theme can be existing or following from other is in combination to comprise the embodied in other with similar different key elements described herein or factor combination.
Referring to Fig. 1, according to one embodiment of present invention, seat unit 10 has a portion 12, backrest 14, supporting leg 16 and 18, and link gear 20, and described link gear arranges present portion 12 belows and illustrates in greater detail in Fig. 2-4.In addition, seat unit 10 can comprise one or more arm (not shown) and can be attached to larger seat unit as in sofa or modularized seat unit.
In the situation that pivotal arm (pivot-over-arm, POA) type chair, arm and seat portion and link gear 20 interconnection, make supporting leg 16 and 18 can directly not support described arm.The lower section frame of supporting leg 16 and 18 supported seat unit 10 can be moved a portion 12 together with described arm.In POA configuration, backrest 14 can be included in that handrail top is extended and when backrest is swung back around the alar part of the rear portion of handrail pivotable.In being known as the alternate configuration of framework cover framework (frame-within-a-frame) type, described arm maintains static with respect to seat portion 12, and seat portion can regulate by link gear.In this embodiment, seat portion 12 is movable at the conditioning period of seat unit 10, but described arm keeps relatively maintaining static.
In one embodiment, backrest 14 extends and is connected to rotationally link gear 20 from the rear section of seat unit 10.In addition, as will be below with reference to Fig. 2-4 in greater detail, link gear 20 comprises the footrest component that makes one or more footstools stretch and regain.In each embodiment, link gear 20 is arranged to hingedly to activate and the motion between closed (packing up) position, extended position and layback position of control block portion 12, backrest 14 and footstool.
In one embodiment of the invention, seat unit 10 comprises the high supporting leg design with specific size characteristic.For example, Fig. 1 shows first size 22, it comprise when link gear 20 during in closure or stowed position in a part for seat portion installing plate for link gear 20 and the distance between the bottom of front leg strut 16.In one embodiment, first size is in the scope of approximately 11 inches to approximately 12.5 inches.Fig. 1 illustrates the second size 24 of the height that comprises supporting leg 16.In one embodiment of the invention, the second size 24 is in the scope of approximately 5 inches to approximately 6 inches.Other size of the present invention is described in the application's other parts, for example the distance between present portion's installing plate and baffle-type footstool (flipper ottoman) support when link gear is packed up.
If without the present invention, comprise that the high supporting leg chair of regulatory function of the present invention (for example, leg rest stretches/packs up with backrest and swings back/lean forward) does not meet first size 22 and the second size 24 conventionally.For example, if without the present invention, when the height of seat portion installing plate comprises first size, be just difficult on the ground have sufficient gap and make leg rest stretch and pack up.Yet, the present invention includes the link gear with compact design, it allows the enough lowlands of seat portion installing plate to locate to meet first size, and allows the motion of seat unit between closing position, extended position and layback position.
Fig. 2-4 illustrate the configuration of the link gear 20 of the three position back-tilting type seat units (calling " seat unit " in the following text) for regulating manually or automatically, and this seat unit is designed to be configured to high leg-type seat unit in each embodiment.As mentioned above, link gear 20 is arranged to hingedly to activate and to control the motion of seat portion, backrest and the footstool of seat unit.That is to say, link gear 20 can be adjusted to closing position (Fig. 2), stretch (TV) position (Fig. 3) and layback position (Fig. 4).In layback position, as mentioned above, backrest rotates backward and setovers with angle of inclination backward, and described angle is obtuse angle with respect to seat portion.
Between closing position, extended position and layback position, carry out conditioning period, link gear 20 utilizes various connectors (connecting rod) and pivotal part.The position of the geometric configuration of connector and their interconnection makes the high leg seating unit in three positions with lower height of seat can have advantage.Equally, lower height of seat is limited by first size 22 at least in part, and wherein the distance between the end 16a of supporting leg 16 and seat portion installing plate is in the scope of approximately 11 inches to approximately 12.5 inches.When meeting this first size, just utilize link gear 20 to realize the final height of seat (that is, comprising seat cushion) of approximately 17 inches to approximately 18.5 inches.
Substantially, link gear 20 comprises a plurality of connecting rods, and described a plurality of connecting rods are arranged in the motion that activates and control seat unit between closing position, extended position and layback position between moving period.Conventionally, in order to realize the hinged actuating of link gear 20, each connecting rod can be connected to one or more other connecting rods or the plate that comprises link gear 20 pivotly.What be to be understood that and recognize is, between these connecting rods, can be rendered as various configurations by pivotable connector (being depicted as in the drawings pivotal point), for example the combination of pivotal pin, bearing, traditional installation hardware, rivet, bolts and nuts or in woodwork industry known any other suitable securing member.In addition, the shape of connecting rod and support can change, as the position of some pivotal point also can change.Be to be understood that, for example, when connecting rod to other element (is called as pivotly " connection ", connecting rod, support, framework etc.), with other element " interconnection ", " attached " on other element etc. time, can expect that connecting rod and each element can be in direct contact with one another, or also can there is other element, as element between.
In operation, the rotational motion of link gear 20 guiding backrest, seat portion and footstools.In a kind of exemplary configuration, these motions are controlled by the link gear (one of them illustrates herein and represents with Reference numeral 20) of a pair of mirror image substantially, and described a pair of link gear comprises the layout of the connecting rod of interconnection pivotly.Link gear about a plane extending longitudinally with opposite relation setting, described plane between described a pair of opposed arm to a minute seat unit.So, description below will only concentrate on one of them link gear 20, and described content is applicable to another complementary linkage unit comparably.
With reference to Fig. 2-4, the vantage point in seat unit shows according to the side direction view of the link gear 20 of the embodiment of the present invention.In one embodiment, link gear 20 comprises footrest component 26, seat portion installing plate 28, substrate 30 and seat adjustment assembly 32.Footrest component 26 comprises and is arranged in a plurality of connectors that seat unit conditioning period between extended position and closing position makes respectively footstool stretch and packs up.Seat portion installing plate 28 is configured to be fixedly mounted in a portion, and jointly limits portion's area supported (not shown) with opposed seat portion installing plate.Seat adjustment assembly 32 comprises back installation connecting element 34 and a plurality of other connector.In general, seat adjustment assembly 32 is suitable for making to be connected to the backrest layback on back installation connecting element 34 and leaning forward.In addition, seat adjustment assembly 32 is suitable for making to be connected to the seat portion lateral translation on portion's installing plate 28 and angularly regulating.In addition, in the automatic embodiment of seat unit, seat adjustment assembly 32 is connected on the crossbeam for example, being regulated linearly or rotationally by linear actuators (, motor mechanism), be conducive to thus that seat unit initiates in response to user electronically actuated and moving.
In each embodiment, one or more supporting legs 16 and 18 are suitable for vertically erecting and seat unit being bearing on lower surface.In each embodiment, in framework cover frame-type chair, supporting leg is arranged on arm, and supporting leg is arranged in lower arm substrate in pivotal arm type chair.Sometimes, in arm or lower arm substrate, underframe is installed.Substrate 30 is for example arranged on, on pipe across underframe (, front and back both).Seat portion installing plate 28 is via each connector and substrate 30 interconnection that comprise seat adjustment assembly 32, seat adjustment assembly carries out conditioning period between closing position, extended position and layback position makes portion translation on substrate 30, incrementally regulates the angle of inclination between them simultaneously.
With reference to Fig. 2-4, footrest component 26 will be described in more detail.Footrest component 26 comprises rear footstool connector 35 and front footstool connector 36, and the two is attached to portion's installing plate at pivot part 38 and 40 respectively.Footrest component 26 is also included in the main footstool connector 42 that pivot part 44 is attached to rear footstool connector 35, and before pivot part 48 is attached to the second footstool connector 46 of footstool connector 36.The second footstool connector 46 and main footstool connector 42 are all attached to foot-rest bracket 50, and main footstool connector 42 is also attached to middle footstool support 52.Foot-rest bracket is used for supporting leg rest 51(Fig. 1), and except leg rest 51, middle footstool support 52 is also for supporting another footstool 53(Fig. 1).Footstool support 52 in the middle of middle footstool control connection part 57 is attached to from the second footstool connector 46.Footrest component 26 also comprises the baffle controls connector 54 that is attached to the second footstool connector 46 and is attached to baffle-type footstool support 56, and baffle-type footstool support 56 can be used for supporting another leg rest 59(Fig. 1).
As mentioned above, footrest component 26 is for activating and making described a plurality of leg rest 51,53 and 59 move to extended position (Fig. 3) from closing position or stowed position (Fig. 1 and 4).So, link gear 20 also comprises that the leg rest that is attached to the locking connector 60 of front footstool connector 36 and is attached to rear footstool connector 35 drives connector 62.Locking connector 60 is also attached to lock bracket 64, and lock bracket 64 is attached to driving tube 66 and locking installing plate 68.When activating (manual or use motor) driving tube 66, lock bracket 64 clockwise rotates (in the view being provided by Fig. 2) around the pivot part 70 that lock bracket 64 is attached to locking installing plate 68.This motion of lock bracket 64 drives locking connector 60 forward, and this makes again front footstool connector 36 clockwise rotate around front footstool connector 36 is attached to a pivot part for portion's plate 28 40.Meanwhile, drive connector 62 and rear footstool connector 35 to activated, rear footstool connector 35 clockwise rotates around rear footstool connector 35 is attached to a pivot part for portion's plate 28 38 in this case.
Rear footstool connector 35 and front footstool connector 36 make winner's footstool connector 42 and the second footstool connector 46 along with they are stretched to the extended configuration of Fig. 3 and rotate counterclockwise from the clockwise rotating of closing position of Fig. 2 then.In addition, middle footstool control connection part 57 and middle footstool support 52 clockwise rotate around pivot part 72 and 74 respectively, to move to extended position (Fig. 3) from closing position (Fig. 2).In addition, baffle controls connector 54 and baffle-type footstool support 56 clockwise rotate around pivot part 76 and 78 respectively, to move to expanded position (Fig. 3) from closing position (Fig. 2).
As previously mentioned, the compact design of link gear 20 allows to comprise first size 22 and second size 24(Fig. 1 at seat unit) time footrest component 26 from closing position, move to extended position.Compact design is the function of the various geometric configurations (for example, the length of the shape of connecting rod and spacing, connecting rod, the distance between pivot part etc.) of the connector that comprises in footrest component.In one embodiment, these features as in Figure 2-4.
The compact design of linkage unit 20 also provides other benefit.For example, in one embodiment, the baffle-type footstool plate (not shown) that described design allows to be arranged on baffle-type footstool support 56 extends to the width approximate with main toe board (not shown).If without this technology, baffle-type footstool plate will dwindle and can not extend to obtain so wide (from left to right).In another embodiment, described design meets the 3rd size 75 that the distance between present portion's mounting flange 31 and the mounting surface of baffle-type footstool support 56 limits when in the close position by assembly.In one embodiment, the 3rd size is about 3.625 inches.
Footstool 51,53 and 59 and the motion of footrest component 26 from closing structure to extended position have been described.By making driving tube 66 be conducive to these elements to be packed up or closed along contrary direction (that is, the counter clockwise direction in Fig. 3) motion, this so that make above-mentioned movement reversal.
Continuation, with reference to accompanying drawing 2-4, will be described seat adjustment assembly 32 now in more detail.As previously mentioned, seat adjustment assembly 32 is attached to substrate 30 by seat portion plate 28.In addition, seat adjustment assembly 32 moves forward portion's plate 28 when backrest 14 moves to the position of more layback, and when backrest 14 moves to the position of more leaning forward, makes portion's plate 28 move backward.
Seat adjustment assembly 32 comprises that back drives connector 80, after crank 82 and back toggle connector 84.Back drives connector 80 to be attached to back mounting bracket 34 and to be attached to after crank 82.Mounting bracket 34 is attached to the back seat portion support 81 extending from seat portion installing plate 28.After crank 82 is attached to a rear portion of portion's installing plate 28 86 and is attached to back toggle connector 84 at pivot part 83, and back toggle connector 84 is attached to substrate 30.
Seat adjustment assembly 32 also comprises rear hinge connector 88 and front hinge connector 90, and the two is all attached to roller connector 92.Roller connector 92 comprises two rollers 94 and 96, and they are connected in roller connector 92 rotationally.Roller 94 and 96 is arranged between roller connector 92 and substrate 30, and roller 94 and 96 is arranged on one or more track of substrate 30.
As previously mentioned, seat adjustment assembly 32 is conducive to the layback of backrest 14 and leans forward, and portion's installing plate 28 is moved around with respect to substrate 30.Now will the operation of seat adjustment assembly 32 be described in more detail.
Referring to Fig. 3, seat portion installing plate 28 is owing to moving and being regulated downwards from closing position to extended position.This at least a portion moving down is to drive connector 62 to cause by the leg rest that rear hinge connector is worked.That is to say, when link gear moves from closing position to extended position, rear hinge connector rotates counterclockwise, and makes thus portion's installing plate move down.During to the motion of layback position, back mounting bracket 34 clockwise rotates around the pivot part 98 that back mounting bracket 34 is attached to back seat portion support 81.For example, when the user in being sitting in seat unit 10 leans on backward or applies weight to backrest 14 in addition, back mounting bracket 34 can clockwise rotate.Clockwise rotating of back mounting bracket 34 drives connector 80 to push away downwards at back, makes thus after crank 82 rotate counterclockwise and move down around pivot part 83.Back toggle connector 84 regulates counterclockwise around the pivot part that back toggle connector 84 is attached to substrate 30.For example, when substrate 30 is with respect to seat portion installing plate fixedly time (when substrate 30 is attached to the supporting leg that rests the chair on floor directly or indirectly), back mounting bracket 34, back drive the motion of connector 80, after crank 82 and back toggle connector 84 to cause travelling forward of seat portion installing plate 28.
Continuation is with reference to Fig. 3, and when seat portion installing plate 28 is setovered forward, rear hinge connector 88 and front hinge connector 90 pass to roller connector 92 by travelling forward of seat portion installing plate 28.And then roller connector 92 utilizes the roller 94 and 96 moving around on the track of substrate 30 to move forward with respect to substrate 30.
The position of leaning forward of seat adjustment assembly 32 from Fig. 3 described to the motion of the position of layback in Fig. 4.By making back mounting bracket 34 rotate in the counterclockwise direction (as Fig. 3 looks) (this and then make above-mentioned movement reversal), be conducive to move to the position shown in Fig. 3 from the position as shown in Fig. 4.For example, can make back mounting bracket 34 move on one's own initiative, and/or removable back mounting bracket 34 power (for example, user's body weight) of motion clockwise that makes.Equally, user turns forward and also can apply the power that allows back mounting bracket 34 to rotate counterclockwise.
Fig. 5 illustrates according to the various views of the various combination of the connecting rod being labeled of the embodiment of the present invention.
The multiple different layout of described various parts and unshowned parts is all possible and can not exceed the scope of claims.In line with descriptive, nonrestrictive original intention has been described the various embodiment of our technology.At readers ' reading of the present disclosure after present disclosure and because read the disclosure, alternate embodiment will be apparent for them.Can realize the alternative means of implementing aforementioned content and the scope that does not depart from claims.Specific feature and sub-portfolio are available and with reference to further feature and sub-portfolio, just can not adopt, and can expect within the scope of the claims.
Claims (6)
1. for a link gear for seat unit, described link gear comprises:
The seat portion installing plate with portion's mounting surface, seat portion can be arranged in described seat portion mounting surface;
Be attached to rear footstool connector and the front footstool connector of described seat portion installing plate;
Be attached to described rear footstool connector and be attached to for supporting the main footstool connector of the foot-rest bracket of the first leg rest;
Be attached to described front footstool connector and be attached to the second footstool connector of described foot-rest bracket;
Be attached to the baffle controls connector of described the second footstool connector; With
Be attached to described baffle controls connector and be attached to the baffle-type footstool support of described foot-rest bracket, wherein said baffle-type footstool support comprises for supporting the leg rest mounting surface of the second leg rest, and wherein said link gear can move between closing position and extended position.
2. link gear according to claim 1, wherein, in described closing position, the distance between described leg rest mounting surface and described seat portion mounting surface is approximately 3.625 inches.
3. link gear according to claim 1, also comprises:
Substrate;
Be attached to the seat adjustment assembly of described substrate and described seat portion installing plate; With
Be attached to the supporting leg of described substrate, the distance between the end of wherein said supporting leg and described seat portion mounting surface is in the scope of approximately 11 inches to approximately 12.5 inches.
4. link gear according to claim 3, wherein, described supporting leg is included in the height in the scope of approximately 5 inches to approximately 6 inches.
5. a high supporting leg chair, comprising:
Front leg strut; With
Link gear, described link gear comprises:
(1) be attached to the substrate of described front leg strut;
(2) be attached to the seat adjustment assembly of described substrate; With
(3) seat portion installing plate, described seat portion installing plate is attached to described seat adjustment assembly and comprises portion's mounting surface, and the distance between the bottom of wherein said front leg strut and described seat portion mounting surface is in the scope of approximately 11 inches to approximately 12.5 inches.
6. high supporting leg chair according to claim 5, also comprises:
Chair cushion, described chair cushion is arranged on described seat portion's installing plate top and comprises that the distance between wherein said top surface and the bottom of described front leg strut is in the scope of approximately 17 inches to approximately 18.5 inches for supporting user's top surface.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201361822075P | 2013-05-10 | 2013-05-10 | |
| US61/822,075 | 2013-05-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104138161A true CN104138161A (en) | 2014-11-12 |
Family
ID=50531697
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320519720.XU Expired - Lifetime CN203563927U (en) | 2013-05-10 | 2013-08-23 | Linkage mechanism for high-supporting-leg seat unit |
| CN201310372963.XA Pending CN104138161A (en) | 2013-05-10 | 2013-08-23 | Linkage mechanism for high-supporting-leg seat unit |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320519720.XU Expired - Lifetime CN203563927U (en) | 2013-05-10 | 2013-08-23 | Linkage mechanism for high-supporting-leg seat unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN203563927U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109700221A (en) * | 2017-10-25 | 2019-05-03 | L & P 产权管理公司 | Modular assembly for high leg rows of seats |
| WO2022000968A1 (en) * | 2020-07-02 | 2022-01-06 | 永艺家具股份有限公司 | Multifunctional leisure chair frame structure, and supporting sitting method therefor |
| CN113892772A (en) * | 2021-10-27 | 2022-01-07 | 锐迈机械科技（吴江）有限公司 | Mechanical stretching device for a movable seat unit and seat unit |
| CN114304965A (en) * | 2020-09-29 | 2022-04-12 | L & P 产权管理公司 | Concealed footrest deck chair mechanism with high-foot design |
| WO2022105618A1 (en) * | 2020-11-19 | 2022-05-27 | 德沃康科技集团有限公司 | Ottoman linkage device, frame body, and seat |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203563927U (en) * | 2013-05-10 | 2014-04-30 | 礼恩派(泰州)有限公司 | Linkage mechanism for high-supporting-leg seat unit |
| EP2994019B1 (en) | 2013-05-10 | 2018-04-25 | L&P Property Management Company | Linkage mechanism for high-leg seating unit |
| CN104257150B (en) * | 2014-09-26 | 2017-02-15 | 宁波市梦莹家具制造有限公司 | Intelligent sofa |
| WO2017066610A1 (en) * | 2015-10-15 | 2017-04-20 | L&P Property Management Company | Motorized linkage mechanism for hi-leg seating unit |
| WO2018212987A1 (en) * | 2017-05-15 | 2018-11-22 | L&P Property Management Company | Modular assembly for high leg row seating |
| US10512333B2 (en) * | 2018-03-22 | 2019-12-24 | L&P Property Management Company | Low-profile, zero gravity, all-linkage seat mechanism with added back recline |
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- 2013-08-23 CN CN201320519720.XU patent/CN203563927U/en not_active Expired - Lifetime
- 2013-08-23 CN CN201310372963.XA patent/CN104138161A/en active Pending
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022000968A1 (en) * | 2020-07-02 | 2022-01-06 | 永艺家具股份有限公司 | Multifunctional leisure chair frame structure, and supporting sitting method therefor |
| CN114304965A (en) * | 2020-09-29 | 2022-04-12 | L & P 产权管理公司 | Concealed footrest deck chair mechanism with high-foot design |
| WO2022105618A1 (en) * | 2020-11-19 | 2022-05-27 | 德沃康科技集团有限公司 | Ottoman linkage device, frame body, and seat |
| CN113892772A (en) * | 2021-10-27 | 2022-01-07 | 锐迈机械科技（吴江）有限公司 | Mechanical stretching device for a movable seat unit and seat unit |
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| CN203563927U (en) | 2014-04-30 |
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