Leg multiselect active sofa mechanical stretching deviceTechnical field
The present invention relates to a kind of sofa seat unit, particularly a kind of leg rest can be collapsed or deployed, and backrest angle can be carried outThe Multifunctional leg multiselect active sofa mechanical stretching device necessarily adjusted.
Background technology
Current existing active sofa mechanical stretching device has four great insufficient places：1st, sitting height is all universal higher,Cause user during use, both feet do not land, and leg has sense of fatigue over time, influences the comfortableness of sofa.2nd, the stamping parts of sofa bottom brandreth is exposed, and bottom can not coat completely when forcing the exploitation of function sofa, make sofa mechanical stretchingDevice seems no security, the exploitation for influenceing the outward appearance of function sofa and using.3rd, sliding rail driving device, function sofa is forcedLeft and right there is asynchrony phenomenon in stretching process, influences the comfort level and Operational Figure Of Merit of user.4th, using processIn, part sinkage occurs in active sofa mechanical stretching device, cushion, influences active sofa mechanical stretching device and uses the longevityLife, potential safety hazard is brought for this to user.5th, backrest is short of comfort level in the motion process lain down, and is brought to function sofaFatefulue defect.
The content of the invention
The technical problems to be solved by the invention are to overcome the above-mentioned deficiency in the presence of prior art, and provide a kind of knotStructure is succinct, easy to use, and sitting height is lower with respect to like product, stability is more preferable, fastness is stronger, comfort level is higher, using moreAdd extensive leg multiselect active sofa mechanical stretching device.
Technical scheme is used by the present invention solves above-mentioned technical problem：The leg multiselect active sofa mechanical stretching, extension dressPut, including left-hand side part, right side members, switch block and extension spring, self-locking spring, backrest return spring, left-hand side part withRight side members are fixedly connected by fixed component, and switch block is arranged in left-hand side part or right side members, it is characterized in that instituteState left-hand side part, right side members are equipped with identical leg structure, S slides limit connector, S and is slidably connected one, is slidably connected2nd, be slidably connected three, four, five, the S legs drive connection part that is slidably connected that is slidably connected, S front supporting members, S rear supports, S auxiliaryInstalled part, S installation side plates, S sit frame installing plate, backrest impeller, S back ofs the body locating part, fixedly connected part, S back ofs the body connector, the S back ofs the body and connectedPart, S drag-lines drive connection part, S drag-lines fixedly connected part, S square pipe connecting pieces, flange fixture, fixedly connected part are fixed on S seatsOn frame installing plate, even part is rotatablely connected the S back ofs the body with S back ofs the body connector, S back ofs the body locating part, backrest impeller, and S installation side plates are slided with SLimit connector, S one, the backrest impeller that is slidably connected are rotatablely connected, and S is slidably connected one with being slidably connected two, being slidably connected3rd, four, the five, S that is slidably connected that is slidably connected slides limit connector and is rotatablely connected, S auxiliary installation pieces and the three, S that is slidably connectedRear support, S front supporting members, being slidably connected two is rotatablely connected, and S sits frame installing plate and S rear supports, S front supporting members, fixationConnector, S square pipe connecting pieces are rotatablely connected, and S sits frame installing plate and is rotatablely connected with leg structure, S auxiliary installation pieces and S legsDrive connection part is rotatablely connected, and S legs drive connection part is rotatablely connected with leg structure, and S drag-lines drive connection part connects with S square tubesFitting, S drag-line fixedly connected parts are rotatablely connected, and S drag-lines fixedly connected part, flange fixture are fixed in installation side plate, theOne limiting bush, the second limiting bush are arranged on S leg connecting rods two, and the 3rd limiting bush is arranged in S installation side plates, the 4thLimiting bush is arranged on S back of the body locating parts, and the 5th limiting bush is arranged on S and sat on frame installing plate, and the 6th banking pin is arranged on and leaned onCarry on the back on impeller, S toe boards are provided with the first confined planes, and the second confined planes are set on S leg connecting rods two, and S slides limit connectorIt is upper that 3rd confined planes are set, the 4th confined planes are set in fixedly connected part, the 5th confined planes are set on S back of the body locating parts, S square tubes connect6th confined planes are set on fitting, the 7th confined planes, the first limiting bush and the first confined planes are set in S drag-line drive connection partsCoordinate, the second limiting bush and the second confined planes coordinate, the 3rd limiting bush and the cooperation of the 3rd confined planes, the 4th limiting bush and4th confined planes coordinate, and the 5th limiting bush and the 6th confined planes coordinate, and the 6th limiting bush and the 5th confined planes coordinate, stretchingSpring is respectively symmetrically arranged between left-hand side part, the fixedly connected part of right side members, S auxiliary installation pieces；Two self-locking springsLeft-hand side part, the S drag-lines drive connection part of right side members, S is respectively symmetrically arranged on to sit between frame installing plate；Backrest return springRespectively symmetrically it is arranged between left-hand side part, the backrest impeller of right side members, S auxiliary installation pieces, switch block drives with S drag-linesFollower link coordinates.
A kind of leg structure of the present invention is by S toe boards, S leg connecting rods one, S leg connecting rods two, S leg connecting rods three, S leg connecting rods four, SMiddle small leg rest, S leg connecting rods five, S leg connecting rods six form, and S leg connecting rods six and S sits frame installing plate, S legs drive connection part, S and drawnRope drive connection part is rotatablely connected, and S leg connecting rods six and S leg connecting rods four are rotatablely connected, S leg connecting rods four and S leg connecting rods five, S legsConnecting rod three is rotatablely connected, and S leg connecting rods five and S sits frame installing plate, S leg connecting rods two are rotatablely connected, and S leg connecting rods three connect with S legsBar two, S leg connecting rods one are rotatablely connected, and S toe boards are rotatablely connected with S leg connecting rods one, S leg connecting rods two, among S small leg rest withS leg connecting rods four, S leg connecting rods two are rotatablely connected.
Invention increases the alternative design in leg, another leg structure is by leg link one, leg link two, legPortion's connecting rod three, leg link four, leg link five, leg link six form, leg link one and leg link two, leg linkSix are rotatablely connected；Leg link three is rotatablely connected with leg link two, and the chute of leg link three, leg are set in leg link threeAlignment pin two on portion's connecting rod six is placed in the chute of leg link three, leg link four and leg link two, leg link six, SFrame installing plate is sat to be rotatablely connected；Leg link five sits frame installing plate, S legs with leg link two, S drag-lines drive connection part, SDrive connection part is rotatablely connected；Leg link one is provided with the 8th confined planes, and leg link six is provided with the 9th confined planes, leg7th limiting bush is set on portion's connecting rod two；7th limiting bush coordinates with the 8th confined planes, the 9th confined planes.
Switch block includes drag-line switch member, metal drawstring, hand switch draw ring, drag-line back-moving spring, drag-line switch memberS is arranged on by the 35th rotating shaft to sit on frame installing plate, drag-line switch member is provided with drag-line switch member connecting pole, and drag-line resetsSpring one end is sat frame installing plate with S and is connected, and the drag-line back-moving spring other end is connected with drag-line switch member connecting pole, and metal drawstring leads toThe drag-line switch member mounting hole for crossing switch block side is connected with hand switch draw ring, drag-line switch member connecting pole.
S auxiliary installation pieces are provided with extension spring installation rivet, and fixedly connected part is provided with extension spring mounting hole；S sidePipe connections are provided with self-locking spring mounting hole, and S sits frame installing plate and is provided with self-locking spring installation rivet；On S auxiliary installation piecesRivet one is installed provided with backrest return spring, backrest impeller is provided with backrest return spring installation rivet two, extension spring twoEnd is hung on extension spring installation rivet and extension spring mounting hole, and self-locking spring is hung in lock spring mounting hole and oneselfLock on spring installation rivet, backrest return spring is hung in backrest return spring installation rivet one and the installation of backrest return springOn rivet two.
S slides limit connector and is rotatablely connected by the tenth eighth-turn axle and S installation side plates, and second is set on the tenth eighth-turn axleBearing, S slide limit connector and are arranged on by second bearing on the tenth eighth-turn axle；S is slidably connected one by the 20th rotating shaftIt is rotatablely connected with S installation side plates, clutch shaft bearing is set in the 20th rotating shaft, S sliding connectors one are arranged on by clutch shaft bearingIn 20th rotating shaft.
Fixed component includes rotation connection square tube, strengthens torsion resistant tube, and rotation connection square tube is fixed on left-hand side part, right sideOn the S square pipe connecting pieces of part, strengthen torsion resistant tube and be fixed on the S auxiliary installation pieces of left-hand side part, right side members.
Present invention reduces the seat height of multiselect theater active sofa mechanical stretching device in itself.The decline of seat heightOn the one hand the design requirement of low seat height function sofa can be met, while be increase seat cushion thickness to the of a relatively high area of seat heightCondition is created with the comfortableness of seat sense.
The present invention optimizes brandreth height dimension in the height of traditional product, shortens active sofa mechanical stretching devicePart, sofa bottom can realize comprehensive cladding.The outward appearance of sofa is more attractive in appearance, and user can be safer, improves sofaClass.
Present invention employs driving rod drive to replace traditional sliding rail driving device, can effectively prevent function sofaThe asynchrony phenomenon that left and right part occurs in motion process is more comfortable in use, sensitive.
The present invention increases flange support positioning on the mounting hole location base for keeping traditional product, improves the use of brandrethLife-span.Increase flange fixture in installation side plate, connected by the way of riveting（It is more firm）, traditional product is fixed without thisPosition, when in use between it is longer in the case of occur brandreth sink, cause damage sofa, to user bring greatly safety it is hiddenSuffer from.After this patent is using flange positioning, effectively it can prevent brandreth from sinking, user feels more relieved, and improve sofa uses the longevityLife.
The present invention is applied to bearing the design of axis of rotation connection, using the principle of manpower barodynamics, in the mistake lain downCheng Zhonghui is more comfortable.The lying posture comfort level of sofa is substantially increased, in use more comfortable, overall using effectIt is more perfect.
Invention can be widely applied to the multiple combinations such as single position, Double-bit, three people positions, theater sofa, corner sofa designDesign, make things convenient for customers with a large amount of new products of a serial product development.
Present invention may apply to manual and electronic mode, circular drag-line type, middle position drag-line type, built-in may be directly applied toThe manual modes such as joystick type, external joystick type control, and go back useable electric moter drive control.
It is also possible to apply the invention to chair lift Functional Design, because sitting height reduces, improves the security and class of sofa.
The present invention is to part composition, tie point and spacing is redesigned.Innovation is connected using bearing axis of rotation,It is more comfortable in use；Driving rod drive is employed, it is more perfect in use；Increase flange positioning, carryThe high service life of brandreth；The whole height of brandreth is reduced, sofa bottom can be achieved and coat comprehensively；Reduce brandreth sitting length scaleIt is very little, be advantageous to the exploitation of sofa extension, enrich the kind of function sofa, be more widely applied, it is convenient and practical.
Brief description of the drawings
Fig. 1 is front and the self-locking unfolding mode schematic diagram when certain the side leg of the embodiment of the present invention 1 is collapsed completely；
Fig. 2 is Fig. 1 rearview；
Fig. 3 is front schematic view when certain the side leg of the embodiment of the present invention 1 is fully deployed；
Fig. 4 is Fig. 3 rearview；
Fig. 5 is the front schematic view when embodiment of the present invention 1 certain appearance of lying on one's side is fully deployed；
Fig. 6 is Fig. 5 rearview；
Fig. 7 is certain the side self-locking of the embodiment of the present invention 1 and opens schematic diagram；
Fig. 8 is the overall structure diagram of the embodiment of the present invention 1.
Fig. 9 is front schematic view when certain the side leg of the embodiment of the present invention 2 is fully deployed；
Figure 10 is Fig. 9 rearview.
In figure：1-S leg connecting rods two；2-S leg connecting rods six；3-S legs drive connection part；4-S front supporting members；5- is slidedFollower link five；6-S sits frame installing plate；7-S rear supports；8- sliding connectors four；9- fixedly connected parts；10-S is carried on the backEven part；11-S carries on the back locating part；12- backrest impellers；13- sliding connectors three；14-S slides limit connector；15-SInstallation side plate；16- sliding connectors two；17-S sliding connectors one；18-S leg connecting rods three；19-S toe boards；20-S legsConnecting rod one；21-S carries on the back connector；22- drag-line switch members；23-S drag-line drive connection parts；24-S square pipe connecting pieces；25-SDrag-line fixedly connected part；26-S leg connecting rods five；Small leg rest among 27-S；28-S leg connecting rods four；29- flange fixtures；30-S auxiliary installation pieces；31- first rotating shafts；The rotating shafts of 32- second；The rotating shafts of 33- the 3rd；The rotating shafts of 34- the 4th；35- the 5thRotating shaft；The rotating shafts of 36- the 6th；The rotating shafts of 37- the 7th；38- eighth-turn axles；The rotating shafts of 39- the 9th；The rotating shafts of 40- the tenth；41-11 rotating shafts；The rotating shafts of 42- the 12nd；The rotating shafts of 43- the 13rd；The rotating shafts of 44- the 14th；The rotating shafts of 45- the 15th；46- the tenthSix rotating shafts；The rotating shafts of 47- the 17th；The eighth-turn axles of 48- the tenth；The fixing holes of 49- first；The fixing holes of 50- second；51- the 19thRotating shaft；The rotating shafts of 52- the 20th；The rotating shafts of 53- the 21st；The rotating shafts of 54- the 22nd；The rotating shafts of 55- the 23rd；56-24 rotating shafts；The rotating shafts of 57- the 25th；The fixing holes of 58- the 5th；The rotating shafts of 59- the 26th；The rotating shafts of 60- the 27th；The eighth-turn axles of 61- the 20th；The rotating shafts of 62- the 29th；The fixing holes of 63- the 3rd；The fixing holes of 64- the 4th；The 30th turn of 65-Axle；66- alignment pins one；The rotating shafts of 67- the 31st；The rotating shafts of 68- the 32nd；The rotating shafts of 69- the 33rd；70- the 30thFour rotating shafts；The rotating shafts of 71- the 35th；The rotating shafts of 72- the 36th；The fixing holes of 73- the 6th；The rotating shafts of 74- the 37th；75-7th fixing hole；The limiting bushs of 76- first；The mounting-positioning holes of 77- first；The mounting-positioning holes of 78- second；79- second is limitedPosition bushing；The confined planes of 80- second；The limiting bushs of 81- the 4th；The limiting bushs of 82- the 5th；The confined planes of 83- the 7th；84-One confined planes；85- clutch shaft bearings；86- second bearings；The confined planes of 87- the 3rd；The limiting bushs of 88- the 3rd；89- the 6th is limitedPosition bushing；90- switch control pins；The confined planes of 91- the 5th；The confined planes of 92- the 4th；93- is rotatablely connected square tube；94- is certainlyLock spring；95- extension springs；96- backrest return springs；97- strengthens torsion resistant tube；98- hand switch draw rings；99- metalsDrawstring；100- drag-line back-moving springs；101- self-locking springs install rivet；102- self-locking spring mounting holes；103- stretches bulletSpring installs rivet；104- backrest returns spring installs rivet one；105- backrest returns spring installs rivet two；106- is stretchedSpring mounting hole；107- drag-line switch member mounting holes；108 1 foot's connecting rods one；109 1 foot's connecting rods two；110 1 foots connectBar three；111 1 foot's connecting rods four；112 1 foot's connecting rods five；113 1 the 30th eighth-turn axles；114 1 foot's connecting rods six；115 139th rotating shaft；116 1 the 40th rotating shafts；117 1 the 41st rotating shafts；118 1 alignment pins two；119 1 the 42nd turnsAxle；120 1 the 43rd rotating shafts；121 1 the 8th confined planes；122 1 the 9th confined planes；123 1 the 7th limiting bushs, 124-Six confined planes, the rotating shafts of 125- the 44th, 126- drag-line switch member connecting poles.
Embodiment
Below in conjunction with the accompanying drawings and the invention will be further described by embodiment.
Embodiment 1：
The present embodiment is multiple including left-hand side part, right side members, switch block and extension spring 95, self-locking spring 94, backrestPosition spring 96, left-hand side part are fixedly connected with right side members by fixed component, and switch block is arranged on left-hand side part or the right sideIn sidepiece part, connect it is characterized in that the left-hand side part, right side members are equipped with identical S toe boards 19, S leg connecting rods 1, S legsBar 21, S leg connecting rods 3 18, S leg connecting rods 4 28, the small leg rest 27 in S centres, S leg connecting rods 5 26, S leg connecting rods 62, S slide spacingConnector 14, S be slidably connected 1, is slidably connected 2 16, is slidably connected 3 13, be slidably connected 48, be slidably connected 55, S legsPortion's drive connection part 3, S front supporting members 4, S rear supports 7, S auxiliary installation pieces 30, S installation side plates 15, S sit frame installing plate 6, leaned onCarry on the back impeller 12, S back ofs the body locating part 11, fixedly connected part 9, S back ofs the body connector 21, the S back ofs the body even part 10, S drag-lines drive connection part 23, SDrag-line fixedly connected part 25, S square pipe connecting pieces 24, flange fixture 29.S toe boards 19 pass through first rotating shaft with S leg connecting rods 2131 rotation connections；S leg connecting rods 21 and S leg connecting rods 3 18 are rotatablely connected by the 23rd rotating shaft 55；S leg connecting rods 1 and S is putSole 19 is rotatablely connected by the 25th rotating shaft 57；S leg connecting rods 1 and S leg connecting rods 3 18 pass through 56 turns of the 24th rotating shaftDynamic connection；S leg connecting rods 4 28 are rotatablely connected with S leg connecting rods 3 18 by the second rotating shaft 32 and S leg connecting rods 5 26 are by the 30thOne rotating shaft 67 is rotatablely connected, is rotatablely connected with S leg connecting rods 62 by the 21st rotating shaft 53；S leg connecting rods 5 26 and S leg connecting rods21 are rotatablely connected by the 22nd rotating shaft 54, are rotatablely connected with S seat frames installing plate 6 by the 4th rotating shaft 34；S leg connecting rods 62It is rotatablely connected with S seat frames installing plate 6 by the 30th rotating shaft 65 and S drag-lines drive connection part 23 is by the 32nd rotating shaft 68It is rotatablely connected, is rotatablely connected with S legs drive connection part 3 by the 5th rotating shaft 35；Small leg rest 27 and S leg connecting rods 4 28 among SIt is rotatablely connected by the 3rd rotating shaft 33, small leg rest chute among S, the small leg rest chute in S centres and S is set among S on small leg rest 27Alignment pin 1 on leg connecting rod 21 coordinates positioning（Alignment pin 1 slides and spacing in small leg rest chute among S, referring toFig. 2, Fig. 4）；S sits frame installing plate 6 and S front supporting members 4 are rotatablely connected by the 7th rotating shaft 37 and S rear supports 7 are by second17 rotating shafts 27 are rotatablely connected；S square pipe connecting pieces 24 are rotated with S drag-lines drive connection part 23 by the 33rd rotating shaft 69 to be connectedConnect, be rotatablely connected with S drag-lines fixedly connected part 25 by the 29th rotating shaft 62；S sits frame installing plate 6 and is fixedly connected with S drag-linesPart 25 is fixedly connected by the 3rd fixing hole 63, the 4th fixing hole 64, passes through the 5th fixing hole the 58, the 6th with fixedly connected part 9Fixing hole 73, the 7th fixing hole 75 are fixedly connected；S accessory mounting plates 30 pass through the 20th eighth-turn axle with S legs drive connection part 361 rotation connections and S front supporting members 4 are rotatablely connected by the 34th rotating shaft 70 and S rear supports 7 are by the 36th turnAxle 72 is rotatablely connected, be rotatablely connected with sliding connector 2 16 by the 19th rotating shaft 51, passes through the with sliding connector 3 1317 rotating shafts 47 are rotatablely connected；S sliding connectors 1 are rotatablely connected with sliding connector 2 16 by the 6th rotating shaft 36, with slidingFollower link 55 is rotatablely connected by eighth-turn axle 38, is rotatablely connected with S installation side plates 15 by the 20th rotating shaft 52；S is slidedLimit connector 14 is rotatablely connected with sliding connector 3 13 by the 16th rotating shaft 46 and sliding connector 48 is by the tenthRotating shaft 40 is rotatablely connected, is rotatablely connected with S installation side plates 15 by the tenth eighth-turn axle 48；Sliding connector 48 is with being slidably connectedPart 55 is rotatablely connected by the 9th rotating shaft 39,3 13 is rotatablely connected with being slidably connected by the 44th rotating shaft 125；The S back ofs the body are spacingPart 11 is rotatablely connected by the 13rd rotating shaft 43 with fixedly connected part 9, rotates company by the 14th rotating shaft 44 with S back of the body connectors 21Connect, be rotatablely connected with backrest impeller 12 by the 37th rotating shaft 74；Even part 10 and S back ofs the body connector 21 passes through the 12nd to the S back ofs the bodyRotating shaft 42 is rotatablely connected, is connected with fixedly connected part 9 by the 11st axis of rotation 41；S installation side plates 15 and backrest impeller12 are rotatablely connected by the 15th rotating shaft 45, fix company by the first fixing hole 49, the second fixing hole 50 with flange fixture 29Connect.First limiting bush 76, the second limiting bush 79 are arranged on S leg connecting rods 21, and the 3rd limiting bush 88 is installed installed in SOn side plate 15, the 4th limiting bush 81 is arranged on S back of the body locating parts 11, and the 5th limiting bush 82 is arranged on S and sits frame installing plate 6On, the 6th limiting bush 89 is arranged on backrest impeller, and S toe boards 19 are provided with the first confined planes 84, on S leg connecting rods 21Second confined planes 80 are set, and S is slided and the 3rd confined planes 87 are set on limit connector 14, and the 4th limit is set in fixedly connected part 9Plane 92, S are carried on the back and the 5th confined planes 91 are set on locating part 11, and the 6th confined planes 124 are set on S square pipe connecting pieces 24, and S drag-lines drive7th confined planes 83 are set on follower link 23, and the first limiting bush 76 coordinates with the first confined planes 84, the second limiting bush 79Coordinate with the second confined planes 80, the 3rd limiting bush 88 coordinates with the 3rd confined planes 87, the 4th limiting bush 81 and the 4th spacingFace 92 coordinates, and the 5th limiting bush 82 coordinates with the 6th confined planes 124, and the 6th limiting bush 89 coordinates with the 5th confined planes 91,Two extension springs 95 are respectively symmetrically arranged between left-hand side part, the fixedly connected part of right side members 9, S auxiliary installation pieces 30；Two self-locking springs 94 are respectively symmetrically arranged on left-hand side part, the S drag-lines drive connection part 23 of right side members, S and sit frame installing plate 6Between；Two backrest return springs 96 are respectively symmetrically arranged on left side, the backrest impeller 12 of right side members, S auxiliary installation piecesBetween 30.S auxiliary installation pieces 30 are provided with extension spring installation rivet 103, and fixedly connected part 9 is provided with extension spring mounting hole106；S square pipe connecting pieces 24 are provided with self-locking spring mounting hole 102, and S sits frame installing plate 6 and is provided with self-locking spring installation rivet101；S auxiliary installation pieces 30 are provided with backrest return spring installation rivet 1, and backrest impeller 12 is provided with backrest return bulletSpring installs rivet 2 105.The both ends of extension spring 95 are hung in extension spring installation rivet 103 and extension spring mounting hole 106On, self-locking spring 94 is hung on lock spring mounting hole 102 and self-locking spring installation rivet 101, and backrest return spring 96 dividesDo not hang on backrest return spring installation rivet 1 and backrest return spring installation rivet 2 105.Drag-line switch member 22 passes through35th rotating shaft 71 is arranged on S and sat on frame installing plate 6, and the one end of drag-line back-moving spring 100 is sat frame installing plate 6 with S and is connected, drag-lineThe other end of back-moving spring 100 is connected with the drag-line switch member connecting pole 126 in drag-line switch member 22, and metal drawstring 99 passes through switchThe drag-line switch member mounting hole 107 of this side of part is connected with hand switch draw ring 98, drag-line switch member connecting pole 126.It is fixedPart includes rotation connection square tube 93, reinforcement torsion resistant tube 97 is fixedly connected on left-hand side part, in right side members, is rotatablely connected square tube93 are fixed on the S square pipe connecting pieces 24 of left-hand side part, right side members, strengthen torsion resistant tube 97 and are fixed on left-hand side part, right sideOn the S auxiliary installation pieces 30 of part.Left-hand side part, right side members are mutually symmetrical with.
Second bearing 86 is set on the tenth eighth-turn axle 48, and S slides limit connector 14 and is arranged on the by second bearing 86On ten eighth-turn axles 48.
Clutch shaft bearing 85 is set in the 20th rotating shaft 52, and S sliding connectors 1 are arranged on second by clutch shaft bearing 85In ten rotating shafts 52.
The present invention is additionally arranged bearing and rotates riveting method：Clutch shaft bearing 85, second bearing 86 are applied in apparatus of the present invention,When applying a such as power F1 in Fig. 5 directions（Under normal circumstances i.e. by the gravity of user itself）, clutch shaft bearing 85, secondBearing 86 can be produced from the power of slip, and equivalent reduction F1 active force, user can be more comfortable.
Embodiment 2：
The present embodiment differs only in leg structure with embodiment 1, that is, uses：Leg link 1, leg link two109th, leg link 3 110, leg link 4 111, leg link 5 112, leg link 6 114 replace S toe boards 19, SLeg connecting rod 1, S leg connecting rods 21, S leg connecting rods 3 18, S leg connecting rods 4 28, the small leg rest 27 in S centres, S leg connecting rods 5 26, S legs connectBar 62, leg link 1 are rotatablely connected by the 40th rotating shaft 116 with leg link 2 109, are logical with leg link 6 114The 41st rotating shaft 117 is crossed to be rotatablely connected；Leg link 3 110 is rotated with leg link 2 109 by the 30th eighth-turn axle 113Connect, the chute of leg link three, the chute of leg link three and the positioning in leg link 6 114 are set in leg link 3 110Pin 2 118 coordinates positioning（Alignment pin 2 118 slides and spacing in the chute of leg link three, referring to Fig. 9）；Leg link four111 are rotatablely connected by the 39th rotating shaft 115 with leg link 2 109, pass through the 42nd rotating shaft with leg link 6 114119 are rotatablely connected, are rotatablely connected with S seat frames installing plate 6 by the 4th rotating shaft 34；Leg link 5 112 and leg link 2 109It is rotatablely connected by the 43rd rotating shaft 120 and S drag-lines drive connection part 23 is rotatablely connected by the 32nd rotating shaft 68 and SFrame installing plate 6 is sat to be rotatablely connected by the 30th rotating shaft 65, be rotatablely connected by the 5th rotating shaft 35 with S legs drive connection part 3；Leg link 1 is provided with the 8th confined planes 121, and leg link 6 114 is provided with the 9th confined planes 122, leg link two7th limiting bush 123 is set on 109；7th limiting bush 123 coordinates with the 8th confined planes 121 and the 9th confined planes 122.
The switch block of the present invention may be mounted in left-hand side part or right side members, and switch block switchs including drag-lineThe S auxiliary installations of part 22, metal drawstring 99, hand switch draw ring 98, drag-line back-moving spring 100, left-hand side part and right side membersPart 30 is provided with extension spring installation rivet 103, and fixedly connected part 9 is provided with extension spring mounting hole 106；S square pipe connecting pieces24 are provided with self-locking spring mounting hole 102, and S sits frame installing plate 6 and is provided with self-locking spring installation rivet 101；S auxiliary installation pieces 30Backrest return spring installation rivet 1 is provided with, backrest impeller 12 is provided with backrest return spring installation rivet 2 105.The both ends of extension spring 95 are hung on extension spring installation rivet 103 and extension spring mounting hole 106, and self-locking spring 94 is distinguishedHang on self-locking spring mounting hole 102 and self-locking spring installation rivet 101, backrest return spring 96 is hung in backrest return bulletSpring is installed on rivet 1 and backrest return spring installation rivet 2 105.Drag-line switch member 22 is arranged on S and sits frame installing plate 6On, metal drawstring 99 is switched by the drag-line switch member mounting hole 107 of this side of switch block with hand switch draw ring 98, drag-linePart 22 connects.When self-locking spring 94 is hung in left side, the self-locking spring mounting hole 102 on right side and self-locking spring installation rivetWhen on 101, (such as Fig. 7 institutes when angle Q spends for a between the 29th rotating shaft 62, the 32nd rotating shaft 68 and the 33rd rotating shaft 69Show), when self-locking spring mounting hole 102, self-locking spring installation the distance between rivet 101 are farthest, flex point is produced herein, when S sideWhen pipe connections 24 up swing to the 6th confined planes 124 and are in contact with the 5th limiting bush 82, active sofa mechanical stretching deviceIn locking state, meanwhile, self-locking spring 94 produces a pulling force F3（As shown in Figure 7）, make active sofa mechanical stretching devicePlay a part of self-locking.
The fixed component of the present invention includes rotation connection square tube 93, reinforcement torsion resistant tube 97 is fixedly connected on left-hand side part, the right sideIn sidepiece part, rotation connection square tube 93 is fixed on the S square pipe connecting pieces 24 of left-hand side part, right side members, strengthens torsion resistant tube 97It is fixed on the S auxiliary installation pieces 30 of left-hand side part, right side members, the multifunctional movable sofa machinery for constituting complete set is stretchedExtending apparatus.These pipe fitting generally use bolt connections in fixed component（Referring to Fig. 8）.
Illustrate the course of work of the present invention by taking embodiment 1 as an example below, the application of embodiment 2 is similar.
Fig. 2~Fig. 3 is that embodiment 1 collapses the process being fully deployed to leg from leg, and user is opened manually by pullingDraw ring 98 is closed, the metal drawstring 99 being now connected on hand switch draw ring 98 can synchronously pull drag-line switch member 22, therefore drawRope switch member 22 can produce a downward pressure F2 under the rotating bolt connection of the 35th rotating shaft 71（As shown in Figure 7）；When touching seven confined planes 73 in S drag-lines drive connection part 23 during pressure F2 is pressed down, in self-locking spring 94Reseting procedure in caused pulling force F3 can promote S leg connecting rods 62；S leg connecting rods 62 are connected by the 21st rotating shaft 53 with S legsBar 4 28 is rotatablely connected；S leg connecting rods four pass through the 31st rotating shaft 67, the second rotating shaft 32 and S leg connecting rods 5 26, S leg connecting rods three18 rotation connections；S leg connecting rods 5 26 sit frame installing plate 6, S leg connecting rods 21 by the 4th rotating shaft 34, the 22nd rotating shaft 54 and SRotation connection；S leg connecting rods 3 18 pass through the 23rd rotating shaft 55, the 24th rotating shaft 56, the second rotating shaft 32 and S leg connecting rods four28th, S leg connecting rods 21, S leg connecting rods 1 are rotatablely connected；S toe boards 19 pass through first rotating shaft 31, the 25th rotating shaft 57 and S legsConnecting rod 1, S leg connecting rods 21 are rotatablely connected；Among S small leg rest 27 be rotatablely connected by the 3rd rotating shaft 33 with S leg connecting rods 3 18,Coordinated by alignment pin 1 and S leg connecting rods 21 spacing；S drag-lines drive connection part 23 passes through the 32nd rotating shaft the 68, the 30thThree rotating shaft 69 and S leg connecting rods 62, S square pipe connecting pieces 24 are rotatablely connected；Fixedly connected part 9 is solid by the 5th fixing hole the 58, the 6thDetermine hole 73, the 7th fixing hole 75 is fixed on S and sat on frame installing plate 6；Even part 10 and S back ofs the body connector 21, S carry on the back locating part 11, leaned on the S back ofs the bodyBack of the body impeller 12, fixedly connected part 9 pass through the 11st rotating shaft 41, the 12nd rotating shaft 42, the 14th rotating shaft 44, the 13rd rotating shaft43rd, the 37th rotating shaft 74 interlocks with the rotation connection；S installation side plates 15 and S slides limit connector 14, S and is slidably connected 1, leans onBack of the body impeller 12 is interlocked with the rotation connection by the tenth eighth-turn axle 48, the 20th rotating shaft 52, the 15th rotating shaft 45；S is slidably connected one17 slide limit connector 14 by the with 2 16,3 13,48, the 55, S that is slidably connected that is slidably connected that is slidably connected that is slidably connectedTen rotating shafts 40, the 16th rotating shaft 46, the 9th rotating shaft 39, eighth-turn axle 38, the 6th rotating shaft 36, the 44th rotating shaft 125 linkage turnDynamic connection；S auxiliary installation pieces 30 and be slidably connected 3 13, S rear supports 7, front supporting member 5,2 16 are slidably connected by the tenthSeven rotating shafts 47, the 19th rotating shaft 51, the 34th rotating shaft 70, the 36th rotating shaft 72 interlock with the rotation connection；S sits frame installing plate 6Pass through the 4th rotating shaft 34, the 30th rotating shaft 65, with S rear supports 7, S front supporting members 4, S leg connecting rods 62, S leg connecting rods 5 26Seven rotating shafts 37, the 27th rotating shaft 60 interlock with the rotation connection；When leg is in rounding state, first on S leg connecting rods 21 is spacingBushing 76 has been in contact with the first confined planes 84 on S toe boards 19 locks position-limiting action；Now S is sat the 5th on frame installing plate 6Limiting bush 82 contacts with the 6th confined planes 124 on S square pipe connecting pieces 24, the 3rd limiting bush 88 and S in S installation side plates 15The 3rd confined planes 73 slided on limit connector 14 contact；When there is a driving force（It is often the case that it is operated with manual switches drawingThe pulling force special delivery of ring 98 is to directed force F 2 caused by drag-line switch member 22（As shown in Figure 7））, when power acts on S drag-line drive connectionsWhen on part 23, S drag-lines drive connection part 23 rotates around the 33rd rotating shaft 69, therefore S drag-lines drive connection part 23 is in self-lockingProduced when spring 94 resets under pulling force F3 effects, drive S drag-lines drive connection part 23 to promote S legs to connect by the 32nd rotating shaft 68Bar 62 produces a motion forward；S leg connecting rods 62 by the 21st rotating shaft 53 promote S leg connecting rods 4 28 produce one toPreceding motion；Under the promotion of S leg connecting rods 4 28, pass through the second rotating shaft 54, the 3rd rotating shaft 32, second around the 14th rotating shaft 6714 rotating shafts 56, first rotating shaft 31, the 25th rotating shaft 57, the 31st rotating shaft 67, the 4th rotating shaft 34, the 30th rotating shaft 65 makeS leg connecting rods 5 26, S leg connecting rods 3 18, S toe boards 19, S leg connecting rods 1, S leg connecting rods 21 produce a motion forward；CauseThis makes whole active leg rest produce a stretching routine, when the first limiting bush 76 and S leg connecting rods 3 18 on S leg connecting rods 21On the second confined planes 80 when being in contact, produce a position-limiting action, active leg rest reaches the fully extended state, in active leg restDuring stretching, extension, S sits frame installing plate 6 and passes through the 4th rotating shaft 34, the 30th rotating shaft 65, the S leg connecting rods 5 26 of rotation connection, SA motion forward is produced in the presence of leg connecting rod 62；Sat in S when frame installing plate 6 travels forward by the 27th turnAxle 60, the 7th rotating shaft 37 rotation connection S front supporting members 4, S rear supports 7, by the 5th fixing hole 58, the 6th fixing hole 73,The fixedly connected part 9 that 7th fixing hole 75 is fixedly connected produces a motion forward；The 11st turn in fixedly connected part 9Axle 41 drives the S back ofs the body even part 10, S by the 12nd rotating shaft 42, the 14th rotating shaft 44, the 13rd rotating shaft 43, the 37th rotating shaft 74Carry on the back connector 21, S back ofs the body locating part 11, the relative motion of backrest impeller 12, the left and right S installation side plates 15 in fixed sofa both sidesIn the presence of fixing rotation connection backrest impeller 12 by the 15th rotating shaft 45, backrest impeller 12 is set to pass through the 12nd rotating shaft42nd, even part 10, S back ofs the body connector 21, the S back ofs the body are spacing for the 14th rotating shaft 44, the 13rd rotating shaft 43, the 37th rotating shaft 74 drive S back ofs the bodyPart 11, the relative motion of backrest impeller 12 backward；During this, S installation side plates 15, S auxiliary installation pieces 30, S slide spacingConnector 14, S be slidably connected 1, is slidably connected 2 16, is slidably connected 3 13, being slidably connected 48, being slidably connected 55 turnsThe 20th rotating shaft 52, the 6th rotating shaft 36, eighth-turn axle 38, the 9th rotating shaft 39, the tenth rotating shaft 40, the 16th rotating shaft of dynamic connection46th, the 17th rotating shaft 47, the tenth eighth-turn axle 48, the 19th rotating shaft 51, the 44th rotating shaft 125 do not produce relative rotation, therefore SAuxiliary installation piece 30, S legs drive connection part 3 produce one by the 5th rotating shaft 35, the 20th eighth-turn axle 61 with S leg connecting rods 62Individual motion forward, this segment description be leg rest stretching, extension during be an entirety.
Fig. 5~Fig. 6 is embodiment 1 is fully extended to the process that backrest topples over completely from leg rest, is even applied when being carried on the back in S on part 10Add the power F1 in a such as figure direction（As shown in figure 5, under normal circumstances i.e. by the gravity of user itself）, even part 10 encloses the S back ofs the bodyAround the 11st rotating shaft 41 produce rotation, S the back of the body even part 10 further through the 12nd rotating shaft 42, the 14th rotating shaft 44, the 13rd rotating shaft 43,37th rotating shaft 74 makes S back ofs the body connector 21, S back ofs the body locating part 11, backrest impeller 12 produce relative motion；The S back ofs the body connect part 10 againThe fixedly connected part 9 for making to be fixed on S seat frames installing plate 6 by the 11st rotating shaft 41 produces a motion forward；When S sits frameWhen installing plate 6 travels forward, drive S slide limit connector 14, S be slidably connected 1 by the 16th rotating shaft 46, the 6th turnAxle 36 produces a motion forward；Now, the tenth rotating shaft 40, the 17th rotating shaft 47, the tenth eighth-turn axle 48, the 9th rotating shaft are passed through39th, eighth-turn axle 38, the 19th rotating shaft 51, the 20th rotating shaft 52, the 16th rotating shaft 46, the 6th rotating shaft 36 make S be slidably connected one17th, 2 16,3 13,48, the 55, S that is slidably connected that is slidably connected that is slidably connected that is slidably connected slides limit connector 14 and produces oneIndividual motion forward；When the 4th limiting bush 81 touches four confined planes 92 in fixedly connected part 9 on S back of the body locating parts 11,Backrest is in the state toppled over completely.
Every simple deformation of the invention or equivalent transformation, it is considered that fall into protection scope of the present invention.