CN203016365U

CN203016365U - Mechanical extending device of flexible sofa

Info

Publication number: CN203016365U
Application number: CN 201220668439
Authority: CN
Inventors: 黄小卫; 秦顺云; 李晓鸿; 王海波; 邹国礼
Original assignee: RUIMAI MACHINERY TECHNOLOGY (WUJIANG) Co Ltd
Current assignee: RUIMAI MACHINERY TECHNOLOGY (WUJIANG) Co Ltd
Priority date: 2012-12-07
Filing date: 2012-12-07
Publication date: 2013-06-26
Anticipated expiration: 2022-12-07

Abstract

The utility model relates to a mechanical extending device of a flexible sofa. The mechanical extending device comprises a left side part, a right side part, a switch part and a leg placing spring and an adjusting spring, wherein the left side part is fixedly connected with the right side part through a fixed part, and the switch part is arranged on the left side part or the right side part; the left side part and the right side part are both provided with leg plates, first leg rods, second leg rods, third leg rods, fourth leg rods, fifth leg rods, side plates, revolving shaft driving pieces, limiting connecting rods, second connecting rods, third connecting rods, fourth connecting rods, fifth connecting rods, sixth connecting rods, back pieces, fifth leg rods, first supporting pieces, second supporting pieces, connecting pieces, protecting pieces, hippocampal pieces and bottom legs. The mechanical extending device provided by the utility model has the advantages that the part composition, connecting points and limitation are designed, the structure is concise, the use is convenient, the exceeding loading stress operation is realized, the stability is better, the immobility is stronger, and the lying posture angle is larger.

Description

A kind of active sofa mechanical stretching device

Technical field

The utility model relates to a kind of mechanical extending device for sofa, is a kind ofly to put that leg can draw in or expansion, the backrest angle flat Multifunctional mechanical extending device of movable sofa of can necessarily regulating, even lie.

Background technology

Present existing active sofa mechanical stretching device has the place of following deficiency: 1, bear a heavy burden in the situation that 330 pounds of tests, can't reach more than 30000 times, can not satisfy the larger crowd of body weight, mechanical extending device can't be in the situation that the super high-frequency operation of bearing a heavy burden, and of long duration will cause distortion, even bring great potential safety hazard to the consumer; 2, sofa backrest can not be realized lying flat, and existing active sofa mechanical stretching device backrest angle maximum can reach 145 degree, can't satisfy consumer's flat ideal that realizes lying; 3, make mechanical extending device firm not, Disassembling sofa is easily relaxed, and one affects consumer's use.

The utility model content

Technical problem to be solved in the utility model is to overcome existing above-mentioned deficiency in prior art, and provide a kind of simple for structure, easy to use, realized the stressed operation of super heavy burden, stability is better, fastness is stronger, the lying posture angle is larger, lies even fully flat, uses active sofa mechanical stretching device more widely.

the utility model solves the problems of the technologies described above the technical scheme that adopts: this active sofa mechanical stretching device comprises left-hand side part, right side members, switch block and put the leg spring, regulating spring, left-hand side part is fixedly connected with by fixed part with right side members, and switch block is arranged on left-hand side part or right side members, it is characterized in that described left-hand side part, right side members is provided with identical sole, the first foot lever, the second foot lever, the 3rd foot lever, the 4th foot lever, the 5th foot lever, side plate, second connecting rod, third connecting rod, the 4th connecting rod, the 5th connecting rod, the 6th connecting rod, the first support member, the second support member, STATEMENT OF FEDERALLY SPONSORED, the hippocampus part, protector, rotating shaft transmission spare, back rest, sit frame angle bar is installed, spacing connecting rod, footing, put leg spring and regulating spring, protector is fixed on side plate, sole and the first foot lever, the second foot lever connects, the second foot lever and the 5th foot lever, the 3rd foot lever, the 4th foot lever connects, the 5th foot lever and the second foot lever, the first foot lever connects, the 3rd foot lever and the second foot lever, the first foot lever, side plate connects, the 4th foot lever and the second foot lever, the 6th connecting rod, the 5th connecting rod, side plate connects, side plate and the 3rd foot lever, the 4th foot lever, second connecting rod, the hippocampus part, STATEMENT OF FEDERALLY SPONSORED, back rest connects, hippocampus part and the 5th connecting rod, third connecting rod, side plate connects, the second support member and third connecting rod, footing, the 4th connecting rod connects, STATEMENT OF FEDERALLY SPONSORED and the 4th connecting rod, the first support member, spacing connecting rod, side plate connects, the first support member and STATEMENT OF FEDERALLY SPONSORED, footing connects, spacing connecting rod and STATEMENT OF FEDERALLY SPONSORED, back rest connects, second connecting rod and the 4th connecting rod, side plate connects, the 5th connecting rod and the 4th foot lever, the hippocampus part connects, the 6th connecting rod and the 4th foot lever, rotating shaft transmission spare connects, the first limiting bush is arranged on the 3rd foot lever, the second limiting bush, the 4th limiting bush are arranged on side plate, the 3rd limiting bush is arranged on the 4th connecting rod, the 5th limiting bush is arranged on the hippocampus part, the 6th limiting bush, the 7th limiting bush are arranged on STATEMENT OF FEDERALLY SPONSORED, the 8th limiting bush is arranged on and rotates on driving member, and the 9th banking pin is arranged on back rest, be provided with the first confined planes, the second confined planes on the second foot lever, be provided with the 3rd confined planes, the 4th confined planes on second connecting rod, be provided with the 5th confined planes on STATEMENT OF FEDERALLY SPONSORED, be provided with the 6th confined planes on the 4th connecting rod, be provided with the 7th confined planes, the 8th confined planes on side plate, be provided with the 9th confined planes on spacing connecting rod, be provided with the tenth confined planes on the 6th connecting rod, be provided with the 11 confined planes on the first support member, be provided with the 12 plane on the 4th foot lever, the first limiting bush coordinates with the first confined planes, the second confined planes, the second limiting bush coordinates with the 3rd confined planes, the 3rd limiting bush coordinates with the 8th confined planes, the 12 confined planes, the 4th limiting bush coordinates with the 4th confined planes, the 5th limiting bush coordinates with the 5th confined planes, the 6th confined planes, the 6th limiting bush coordinates with the 7th confined planes, the 7th limiting bush coordinates with the 11 confined planes, the 8th limiting bush coordinates with the tenth confined planes, and the 9th banking pin coordinates with the 9th confined planes, put the leg spring respectively between symmetrical the 6th connecting rod that is arranged on left-hand side part, right side members, side plate, regulating spring respectively the symmetrical STATEMENT OF FEDERALLY SPONSORED that is arranged on left-hand side part, right side members, sit frame and install between angle bar.

Sole described in the utility model and the first foot lever are rotationally connected by the first rotating shaft; The first foot lever and the 5th foot lever are rotationally connected by the 3rd rotating shaft; The first foot lever and the 3rd foot lever are rotationally connected by the 5th rotating shaft; Sole and the second foot lever are rotationally connected by the second rotating shaft; The second foot lever and the 5th foot lever are rotationally connected by the 4th rotating shaft, and the second foot lever and the 3rd foot lever are rotationally connected by the 6th rotating shaft, and the second foot lever and the 4th foot lever are rotationally connected by the 7th rotating shaft; The 3rd foot lever and side plate are rotationally connected by the 8th rotating shaft; The 4th foot lever and the 6th connecting rod are rotationally connected by the 9th rotating shaft, and the 4th foot lever and the 5th connecting rod are rotationally connected by the 11 rotating shaft, and the 4th foot lever and side plate are rotationally connected by the tenth rotating shaft; The 6th connecting rod and rotating shaft transmission spare are rotationally connected by the 24 rotating shaft; The 5th connecting rod and hippocampus part are rotationally connected by the 25 rotating shaft; Side plate and second connecting rod are rotationally connected by the 15 rotating shaft, side plate and hippocampus part are rotationally connected by the 22 rotating shaft, side plate and back rest are rotationally connected by the 13 rotating shaft, side plate and STATEMENT OF FEDERALLY SPONSORED are rotationally connected by the 23 rotating shaft, side plate is fixedly connected with protector, and side plate is connected with the ferropexy of seat frame established angle; Hippocampus part and third connecting rod are rotationally connected by the 12 rotating shaft; Third connecting rod and the second support member are rotationally connected by the 20 rotating shaft; The second support member and footing are rotationally connected by the 19 rotating shaft, and the second support member and the 4th connecting rod are rotationally connected by the 21 rotating shaft; The 4th connecting rod and STATEMENT OF FEDERALLY SPONSORED are rotationally connected by the 16 rotating shaft; STATEMENT OF FEDERALLY SPONSORED and spacing connecting rod are rotationally connected by the 17 rotating shaft, and STATEMENT OF FEDERALLY SPONSORED and the first support member are rotationally connected by the 27 rotating shaft; The first support member and footing are rotationally connected by the 18 rotating shaft; Spacing connecting rod and back rest are rotationally connected by the 14 rotating shaft; Second connecting rod and the 4th connecting rod are rotationally connected by the 26 rotating shaft; The 5th connecting rod and hippocampus part are rotationally connected by the 28 rotating shaft.

switch block described in the utility model comprises cable support, the drag-line switch, be provided with spring mounting hole one on the 6th connecting rod of left-hand side part and right side members, be provided with spring mounting hole two on side plate, be provided with regulating spring on STATEMENT OF FEDERALLY SPONSORED rivet is installed, sit on frame installation angle bar and be provided with the regulating spring installing hole, putting the leg both ends of the spring is hung on spring mounting hole one and spring mounting hole two, regulating spring is hung in regulating spring and installs on rivet and regulating spring installing hole, cable support is arranged on side plate, the drag-line switch is connected with the drag-line switch by the drag-line fixing hole on side plate.

Fixed part described in the utility model comprises torsion resistant tube, drives square tube, stationary pipes, balance pipe, bottom tube connector, torsion resistant tube is fixed on the STATEMENT OF FEDERALLY SPONSORED of left-hand side part, right side members, driving square tube is fixed on the rotating shaft transmission spare of left-hand side part, right side members, stationary pipes is fixed on the first support member of left-hand side part, right side members, and balance pipe is fixed on the second support member of left-hand side part, right side members.

The utility model can be widely used in single position, Double-bit, and three people positions, the theater sofa, the design of the multiple combinations such as corner sofa design makes things convenient for customers with the product development of a series new products in a large number.

The utility model goes for manual and electronic mode, can directly apply to the manual modes such as circular drag-line type, meta drag-line type, built-in handle type, external joystick type and control, and goes back useable electric moter and drives control.

The utility model also can be applicable to the chair lift Functional Design, because sitting height reduces, has promoted security and the class of sofa.

The utility model is to parts composition, tie point and spacing the redesign.The spacing design of multiple spot and Parts optimization design, and have improved fastness, security, the stability of active sofa mechanical stretching device; The novel research and development design of backrest makes backrest can realize the flat state of lying fully when the active sofa mechanical stretching device lying posture, has enriched function and the kind of function sofa, to the sofa manufacturer space that provides more choices, uses more extensive.

Description of drawings

Fig. 1 is the utility model embodiment left-hand side part or right side members shank front and the self-locking unfolding mode schematic diagram when drawing in fully.

Fig. 2 is the utility model embodiment left-hand side part or the right side members shank front schematic view when launching fully.

Fig. 3 is the backsight rotation diagram of Fig. 2.

Fig. 4 is that the utility model embodiment connects complete structural representation by pipe fitting.

Fig. 5 is the utility model embodiment left-hand side part or the right side members shank front schematic view when launching fully.

Fig. 6 is the backsight rotation diagram of Fig. 5.

Fig. 7 is the utility model embodiment left-hand side part or the right side members lying posture front schematic view when launching fully.

Fig. 8 is the backsight rotation diagram of Fig. 7.

In figure:The 1-sole; 2-the first foot lever; 3-the second foot lever; 4-the 4th foot lever; 5-the 5th foot lever; The 6-side plate; The spacing connecting rod of 7-; 8-the 3rd foot lever; The 9-second connecting rod; The 10-third connecting rod; 11-the 4th connecting rod; 12-the 5th connecting rod; 13-the 6th connecting rod; 14-the first support member; 15-the second support member; The 16-STATEMENT OF FEDERALLY SPONSORED; 17-hippocampus part; The 18-back rest; The 19-protector; 20-rotating shaft transmission spare; 21-sits frame angle bar is installed; 22-the first limiting bush; 23-the second limiting bush; 24-the 3rd limiting bush; 25-the 4th limiting bush; 26-the 5th limiting bush; 27-the 6th limiting bush; 28-the 8th limiting bush; 29-the 9th banking pin; 30-the first confined planes; 31-the second confined planes; 32-the 3rd confined planes; 33-the 4th confined planes; 34-the 5th confined planes; 35-the 6th confined planes; 36-the 7th confined planes; 37-the 8th confined planes; 38-the 9th confined planes; 39-the tenth confined planes; 40-the 11 confined planes; 41-the 12 confined planes; 42-the first rotating shaft; 43-the second rotating shaft; 44-the 3rd rotating shaft; 45-the 4th rotating shaft; 46-the 5th rotating shaft; 47-the 6th rotating shaft; 48-the 7th rotating shaft; 49-the 8th rotating shaft; 50-the 9th rotating shaft; 51-the tenth rotating shaft; 52-the 11 rotating shaft; 53-the 12 rotating shaft; 54-the 13 rotating shaft; 55-the 14 rotating shaft; 56-the 15 rotating shaft; 57-the 16 rotating shaft; 58-the 17 rotating shaft; 59-the 18 rotating shaft; 60-the 19 rotating shaft; 61-the 20 rotating shaft; 62-the 21 rotating shaft; 63-the 22 rotating shaft; 64-the 23 rotating shaft; 65-the 24 rotating shaft; 66-the 25 rotating shaft; 67-the 26 rotating shaft; 68-the 27 rotating shaft; 69-the 28 rotating shaft; The 70-footing; 71-the 7th limiting bush; The 72-stationary pipes; 73-puts the leg spring; 74-spring mounting hole one; 75-spring mounting hole two; The 76-regulating spring; The 77-regulating spring is installed rivet; 78-regulating spring installing hole; 79-drag-line switch; 80-drag-line fixing hole; The 81-cable support; 82-bottom tube connector; The 83-torsion resistant tube; The 84-balance pipe; 85-drives square tube.

The specific embodiment

The utility model is described in further detail below in conjunction with accompanying drawing and by embodiment.

the present embodiment active sofa mechanical stretching device comprises left-hand side part, right side members, switch block and put leg spring 73, regulating spring 76, left-hand side part is fixedly connected with by fixed part with right side members, described left-hand side part, right side members is provided with identical sole 1, the first foot lever 2, the second foot lever 3, the 3rd foot lever 8, the 4th foot lever 4, the 5th foot lever 5, side plate 6, spacing connecting rod 7, footing 70, second connecting rod 9, third connecting rod 10, the 4th connecting rod 11, the 5th connecting rod 12, the 6th connecting rod 13, the first support member 14, the second support member 15, STATEMENT OF FEDERALLY SPONSORED 16, hippocampus part 17, back rest 18, protector 19, rotating shaft transmission spare 20, sit frame angle bar 21 is installed, drag-line switch 79, cable support 81, the first foot lever 3 and the 5th foot lever 5 are rotationally connected by the 3rd rotating shaft 44, the first foot lever 2 and the 3rd foot lever 8 are rotationally connected by the 5th rotating shaft 46, sole 1 and the second foot lever 3 are rotationally connected by the second rotating shaft 43, the second foot lever 3 and the 5th foot lever 5 are rotationally connected by the 4th rotating shaft 45, and the second foot lever 3 and the 3rd foot lever 8 are rotationally connected by the 6th rotating shaft 47, and the second foot lever 3 and the 4th foot lever 4 are rotationally connected by the 7th rotating shaft 48, the 3rd foot lever 8 is rotationally connected by the 8th rotating shaft 49 with side plate 6, the 4th foot lever 4 and the 6th connecting rod 13 are rotationally connected by the 9th rotating shaft 50, and the 4th foot lever 4 and the 5th connecting rod 12 are rotationally connected by the 11 rotating shaft 52, and the 4th foot lever 4 is rotationally connected by the tenth rotating shaft 51 with side plate 6, the 6th connecting rod 13 is rotationally connected by the 24 rotating shaft 65 with rotating shaft transmission spare 20, the 5th connecting rod 12 is rotationally connected by the 25 rotating shaft 66 with hippocampus part 17, side plate 6 is rotationally connected by the 15 rotating shaft 56 with second connecting rod 9, side plate 6 is rotationally connected by the 22 rotating shaft 63 with hippocampus part 17, side plate 6 is rotationally connected by the 13 rotating shaft 54 with back rest 18, side plate 6 is rotationally connected by the 23 rotating shaft 64 with STATEMENT OF FEDERALLY SPONSORED 16, side plate 6 is fixedly connected with protector 19, and side plate 6 is installed angle bar 21 with the seat frame and is fixedly connected with, hippocampus part 17 is rotationally connected by the 12 rotating shaft 53 with third connecting rod 10, third connecting rod 10 and the second support member 15 are rotationally connected by the 20 rotating shaft 61, the second support member 15 is rotationally connected by the 19 rotating shaft 60 with footing 70, and the second support member 15 and the 4th connecting rod 11 are rotationally connected by the 21 rotating shaft 62, the 4th connecting rod 11 is rotationally connected by the 16 rotating shaft 57 with STATEMENT OF FEDERALLY SPONSORED 16, STATEMENT OF FEDERALLY SPONSORED 16 is rotationally connected by the 17 rotating shaft 58 with spacing connecting rod 7, and STATEMENT OF FEDERALLY SPONSORED 16 and the first support member 14 are rotationally connected by the 27 rotating shaft 68, the first support member 14 is rotationally connected by the 18 rotating shaft 59 with footing 70, spacing connecting rod 7 is rotationally connected by the 14 rotating shaft 55 with back rest 18, second connecting rod 9 and the 4th connecting rod 11 are rotationally connected by the 26 rotating shaft 67, the 5th connecting rod 12 is rotationally connected by the 28 rotating shaft 69 with hippocampus part 17.the first limiting bush 22 is arranged on the 3rd foot lever 8, the second limiting bush 23 is arranged on side plate 6, the 3rd limiting bush 24 is arranged on the 4th connecting rod 11, the 4th limiting bush 25 is arranged on side plate 6, the 5th limiting bush 26 is arranged on hippocampus part 17, and the 6th limiting bush 27 is arranged on STATEMENT OF FEDERALLY SPONSORED 16, and the 7th limiting bush 71 is arranged on STATEMENT OF FEDERALLY SPONSORED 16, the 8th limiting bush 28 is arranged on rotating shaft transmission spare 20, and the 9th banking pin 29 is arranged on back rest 18, be provided with the first confined planes 30, the second confined planes 31 on the second foot lever 3, be provided with the 3rd confined planes 32, the 4th confined planes 33 on second connecting rod 9, be provided with the 5th confined planes 34 on STATEMENT OF FEDERALLY SPONSORED 16, be provided with the 6th confined planes 35 on the 4th connecting rod 11, be provided with the 7th confined planes 27, the 8th confined planes 28 on side plate 6, be provided with the 9th confined planes 38 on spacing connecting rod 7, be provided with the tenth confined planes 39 on the 6th connecting rod 13, be provided with on the first support member 14 on the 11 confined planes 40, the four foot levers 4 and be provided with the 12 confined planes 41, the first limiting bush 22 and the first confined planes 30, the second confined planes 32 coordinates, the second limiting bush 23 coordinates with the 3rd confined planes 32, the 3rd limiting bush 24 and the 8th confined planes 37, the 12 confined planes 41 coordinates, the 4th limiting bush 25 coordinates with the 4th confined planes 33, the 5th limiting bush 26 and the 5th confined planes 34, the 6th confined planes 35 coordinates, the 6th limiting bush 27 coordinates with the 7th confined planes 36, the 7th limiting bush 71 coordinates with the 11 confined planes 40, the 8th limiting bush 28 coordinates with the tenth confined planes 39, the 9th banking pin 29 coordinates with the 9th confined planes 38, put leg spring 73 respectively between symmetrical the 6th connecting rod 13 that is arranged on left-hand side part, right side members, side plate 6, regulating spring 76 respectively the symmetrical STATEMENT OF FEDERALLY SPONSORED 16 that is arranged on left-hand side part, right side members, sit frame and install between angle bar 21.Left-hand side part, right side members comprise that the parts that switch is installed are all symmetrical mutually.

the switch block of the present embodiment can be arranged on left-hand side part or right side members, switch block comprises cable support 81, drag-line switch 79, be provided with spring mounting hole 1 on the 6th connecting rod 13 of left-hand side part and right side members, be provided with spring mounting hole 2 75 on side plate 6, be provided with regulating spring on STATEMENT OF FEDERALLY SPONSORED 16 rivet 77 is installed, sit on frame installation angle bar 21 and be provided with regulating spring installing hole 78, putting leg spring 73 two ends is hung on spring mounting hole 1 and the spring mounting hole 2 75 on side plate 6 above the 6th connecting rod 13, the regulating spring that regulating spring 76 is hung on STATEMENT OF FEDERALLY SPONSORED 16 is installed rivet 77 and sits frame and install on the regulating spring installing hole 78 of angle bar 21, cable support 81 is arranged on side plate 6, drag-line switch 79 is connected with drag-line switch 79 by the drag-line fixing hole 80 on side plate 6.When the angle between the 8th limiting bush 28, the 26 rotating shaft 67, spring mounting hole 2 75 is that a is when spending (as shown in Figure 1), distance between spring mounting hole 1, spring mounting hole 2 75 farthest, produce flex point herein, when the 8th limiting bush 28 on rotating shaft transmission spare 20 up touches the tenth confined planes 39 on the 6th connecting rod 13, active sofa mechanical stretching device is in locking state, simultaneously, put leg spring 73 and produce a tensile force f 3(as shown in Figure 1), make active sofa mechanical stretching device play the effect of self-locking.

the fixed part of the present embodiment comprises driving square tube 85, torsion resistant tube 83, balance pipe 84, stationary pipes 72, bottom tube connector 82, drive square tube 85 and be fixed on left-hand side part, on the rotating shaft transmission spare of right side members 20, torsion resistant tube 83 is fixed on left-hand side part, on the STATEMENT OF FEDERALLY SPONSORED 16 of right side members, balance pipe 84 is fixed on left-hand side part, on the second support member 15 of right side members, stationary pipes 72 is fixed on left-hand side part, on the first support member 14 of right side members, bottom tube connector 82 is fixed on left-hand side part, on the footing 70 of right side members, formed a complete Multifunctional mechanical extending device of movable sofa of cover.These pipe fittings in fixed part adopt bolt (shown in Figure 4) usually.

Fig. 1 is the state diagram of active sofa mechanical stretching device when putting leg and drawing in.when shank during at rounding state, the first limiting bush 22 contacts with the second confined planes 31, the second limiting bush 23 contacts with the 4th confined planes 32, the 3rd limiting bush 24 and the 8th confined planes 37, the 12 confined planes 41 contacts, the 5th limiting bush 26 and the 5th confined planes 34, the 6th confined planes 35 contacts, the 6th limiting bush 27 contacts with the 7th confined planes 36, the 8th limiting bush 28 contacts with the tenth confined planes 39, the 7th limiting bush 71 contacts with the 11 confined planes 40, put leg spring 73 this moment and can produce the downward pulling force of F3, make shank draw in fully, regulating spring 76 remains unchanged.

Fig. 1～Fig. 2 is that active sofa mechanical stretching device draws from putting leg the process that shank launches fully in, (user is by pulling drag-line switch 79 when a driving force is arranged, this moment, drag-line switch 79 was under the supporting role of drag-line fixing hole 80), drag-line switch 78 drives cable support 81 and produces a downward pressure F2(as shown in Figure 1), touch in the process that presses down when rotating driving member 20 as pressure F2, the tensile force f 3 that produces in the reseting procedure of putting leg spring 73 can drive the 6th connecting rod 13, the 6th connecting rod 13 is connected promotion forward with the 4th foot lever 4 by the 9th rotating shaft 50, drive the 4th foot lever 4 and the second foot lever 3 by the 7th rotating shaft 48 relative motions or spacing, the second foot lever 3 and the 3rd foot lever 8, the 5th foot lever 5, sole 1 relative motion or spacing, the 3rd foot lever 8 and the first foot lever 2, side plate 6 relative motions or spacing, the first foot lever 2 and the 5th foot lever 5, sole 1 relative motion or spacing, side plate 6 and the 4th foot lever 4, second connecting rod 9, hippocampus part 17, STATEMENT OF FEDERALLY SPONSORED 16, back rest 18 relative motions or spacing, the 5th connecting rod 12 and the 4th foot lever 4, hippocampus part 17 relative motions or spacing, third connecting rod 10 and hippocampus part 17, the second support member 15 relative motions or spacing, the second support member 15 and the 4th connecting rod 11, footing 70 relative motions or spacing, STATEMENT OF FEDERALLY SPONSORED 16 and the 4th connecting rod 11, spacing connecting rod 7, by the 18 rotating shaft 59 relative motions or spacing, spacing connection 7 is passed through the 14 rotating shaft 55 relative motions or spacing with back rest 18 with footing 70 for the first support member 14 relative motions or spacing, the first support member 14.When the complete deployed condition of shank, the first limiting bush 22 contacts with the first confined planes 30, the second limiting bush 23 contacts with the 4th confined planes 32, the 6th limiting bush 27 contacts with the 7th confined planes 36, put leg spring 73 this moment and can produce F3 to upper pulling force, make shank launch fully, regulating spring 76 remains unchanged.

to be active sofa mechanical stretching device be deployed into backrest and topple over fully from putting leg Fig. 6～Fig. 7 fully, the flat process of lying, when applying one as the power F1(of figure direction as shown in Figure 7 on back rest 8, generally namely rely on user's self gravity), back rest 18 rotates around the 13 rotating shaft 54, thereby drive back rest 18, spacing connecting rod 7 is by the 14 rotating shaft 55 relative motions or spacing, while STATEMENT OF FEDERALLY SPONSORED 16 and the 4th connecting rod 11, spacing connecting rod 7, the first support member 14 relative motions or spacing, the first support member 14 passes through the 18 rotating shaft 59 relative motions or spacing with footing 70, the second support member 15 and the 4th connecting rod 11, footing 70 relative motions or spacing, third connecting rod 10 and hippocampus part 17, the second support member 15 relative motions or spacing, the 5th connecting rod 12 and the 4th foot lever 4, hippocampus part 17 relative motions or spacing, side plate 6 and the 4th foot lever 4, second connecting rod 9, hippocampus part 17, STATEMENT OF FEDERALLY SPONSORED 16, back rest 18 relative motions or spacing, the first foot lever 2 and the 5th foot lever 5, sole 1 relative motion or spacing, the 3rd foot lever 8 and the first foot lever 2, side plate 6 relative motions or spacing, the second foot lever 3 and the 3rd foot lever 8, the 5th foot lever 5, sole 1 relative motion or spacing, the 4th foot lever 4 and the second foot lever 3 are by the 7th rotating shaft 48 relative motions or spacing, the 6th connecting rod 13 and the 4th foot lever 4 are by the 9th rotating shaft 50 relative motions or spacing, when the 4th confined planes 33 on second connecting rod 9 touches on side plate 6 the 4th limiting bush 25, the first limiting bush 22 and the first confined planes 30 keep in touch, backrest is realized toppling over fully, lie flat, it is shown in Figure 7 that regulating spring 76 meetings this moment produce the tensile force f 4(that stretches).

The utility model is deployed into backrest fully and topples over fully, lies at ordinary times from putting leg at active sofa mechanical stretching device, also be provided with safe spacing, contacted with the 4th confined planes 33 on second connecting rod 9 when losing efficacy when the 4th limiting bush 25 on side plate 6, the 9th banking pin 29 on back rest 18 will touch the 9th confined planes 38 on spacing connecting rod 7.

the left-hand side part of the utility model embodiment, right side members adopts a plurality of pipe fittings and bottom tube connector 82(usually to adopt bolt, referring to Fig. 4) be fixedly connected with after, torsion resistant tube 83 is fixed on left-hand side part, on the STATEMENT OF FEDERALLY SPONSORED 16 of right side members, drive square tube 85 and be fixed on left-hand side part, on the rotating shaft transmission spare of right side members 20, stationary pipes 72 is fixed on left-hand side part, on the first support member 14 of right side members, balance pipe 84 is fixed on left-hand side part, on the second support member 15 of right side members, bottom tube connector 82 is fixedly connected on the front and back end of footing 70, formed a complete Multifunctional mechanical extending device of movable sofa of cover.

Every simple deformation of the present utility model or equivalent transformation should be thought to fall into protection domain of the present utility model.

Claims

1. an active sofa mechanical stretching device, comprise left-hand side part, right side members, switch block and put the leg spring, regulating spring, left-hand side part is fixedly connected with by fixed part with right side members, and switch block is arranged on left-hand side part or right side members, it is characterized in that described left-hand side part, right side members is provided with identical sole, the first foot lever, the second foot lever, the 3rd foot lever, the 4th foot lever, the 5th foot lever, side plate, second connecting rod, third connecting rod, the 4th connecting rod, the 5th connecting rod, the 6th connecting rod, the first support member, the second support member, STATEMENT OF FEDERALLY SPONSORED, the hippocampus part, protector, rotating shaft transmission spare, back rest, sit frame angle bar is installed, spacing connecting rod, footing, put leg spring and regulating spring, protector is fixed on side plate, sole and the first foot lever, the second foot lever connects, the second foot lever and the 5th foot lever, the 3rd foot lever, the 4th foot lever connects, the 5th foot lever and the second foot lever, the first foot lever connects, the 3rd foot lever and the second foot lever, the first foot lever, side plate connects, the 4th foot lever and the second foot lever, the 6th connecting rod, the 5th connecting rod, side plate connects, side plate and the 3rd foot lever, the 4th foot lever, second connecting rod, the hippocampus part, STATEMENT OF FEDERALLY SPONSORED, back rest connects, hippocampus part and the 5th connecting rod, third connecting rod, side plate connects, the second support member and third connecting rod, footing, the 4th connecting rod connects, STATEMENT OF FEDERALLY SPONSORED and the 4th connecting rod, the first support member, spacing connecting rod, side plate connects, the first support member and STATEMENT OF FEDERALLY SPONSORED, footing connects, spacing connecting rod and STATEMENT OF FEDERALLY SPONSORED, back rest connects, second connecting rod and the 4th connecting rod, side plate connects, the 5th connecting rod and the 4th foot lever, the hippocampus part connects, the 6th connecting rod and the 4th foot lever, rotating shaft transmission spare connects, the first limiting bush is arranged on the 3rd foot lever, the second limiting bush, the 4th limiting bush are arranged on side plate, the 3rd limiting bush is arranged on the 4th connecting rod, the 5th limiting bush is arranged on the hippocampus part, the 6th limiting bush, the 7th limiting bush are arranged on STATEMENT OF FEDERALLY SPONSORED, the 8th limiting bush is arranged on and rotates on driving member, and the 9th banking pin is arranged on back rest, be provided with the first confined planes, the second confined planes on the second foot lever, be provided with the 3rd confined planes, the 4th confined planes on second connecting rod, be provided with the 5th confined planes on STATEMENT OF FEDERALLY SPONSORED, be provided with the 6th confined planes on the 4th connecting rod, be provided with the 7th confined planes, the 8th confined planes on side plate, be provided with the 9th confined planes on spacing connecting rod, be provided with the tenth confined planes on the 6th connecting rod, be provided with the 11 confined planes on the first support member, be provided with the 12 plane on the 4th foot lever, the first limiting bush coordinates with the first confined planes, the second confined planes, the second limiting bush coordinates with the 3rd confined planes, the 3rd limiting bush coordinates with the 8th confined planes, the 12 confined planes, the 4th limiting bush coordinates with the 4th confined planes, the 5th limiting bush coordinates with the 5th confined planes, the 6th confined planes, the 6th limiting bush coordinates with the 7th confined planes, the 7th limiting bush coordinates with the 11 confined planes, the 8th limiting bush coordinates with the tenth confined planes, and the 9th banking pin coordinates with the 9th confined planes, put the leg spring respectively between symmetrical the 6th connecting rod that is arranged on left-hand side part, right side members, side plate, regulating spring respectively the symmetrical STATEMENT OF FEDERALLY SPONSORED that is arranged on left-hand side part, right side members, sit frame and install between angle bar.

2. active sofa mechanical stretching device according to claim 1, it is characterized in that: described sole and the first foot lever are rotationally connected by the first rotating shaft; The first foot lever and the 5th foot lever are rotationally connected by the 3rd rotating shaft; The first foot lever and the 3rd foot lever are rotationally connected by the 5th rotating shaft; Sole and the second foot lever are rotationally connected by the second rotating shaft; The second foot lever and the 5th foot lever are rotationally connected by the 4th rotating shaft, and the second foot lever and the 3rd foot lever are rotationally connected by the 6th rotating shaft, and the second foot lever and the 4th foot lever are rotationally connected by the 7th rotating shaft; The 3rd foot lever and side plate are rotationally connected by the 8th rotating shaft; The 4th foot lever and the 6th connecting rod are rotationally connected by the 9th rotating shaft, and the 4th foot lever and the 5th connecting rod are rotationally connected by the 11 rotating shaft, and the 4th foot lever and side plate are rotationally connected by the tenth rotating shaft; The 6th connecting rod and rotating shaft transmission spare are rotationally connected by the 24 rotating shaft; The 5th connecting rod and hippocampus part are rotationally connected by the 25 rotating shaft; Side plate and second connecting rod are rotationally connected by the 15 rotating shaft, side plate and hippocampus part are rotationally connected by the 22 rotating shaft, side plate and back rest are rotationally connected by the 13 rotating shaft, side plate and STATEMENT OF FEDERALLY SPONSORED are rotationally connected by the 23 rotating shaft, side plate is fixedly connected with protector, and side plate is connected with the ferropexy of seat frame established angle; Hippocampus part and third connecting rod are rotationally connected by the 12 rotating shaft; Third connecting rod and the second support member are rotationally connected by the 20 rotating shaft; The second support member and footing are rotationally connected by the 19 rotating shaft, and the second support member and the 4th connecting rod are rotationally connected by the 21 rotating shaft; The 4th connecting rod and STATEMENT OF FEDERALLY SPONSORED are rotationally connected by the 16 rotating shaft; STATEMENT OF FEDERALLY SPONSORED and spacing connecting rod are rotationally connected by the 17 rotating shaft, and STATEMENT OF FEDERALLY SPONSORED and the first support member are rotationally connected by the 27 rotating shaft; The first support member and footing are rotationally connected by the 18 rotating shaft; Spacing connecting rod and back rest are rotationally connected by the 14 rotating shaft; Second connecting rod and the 4th connecting rod are rotationally connected by the 26 rotating shaft; The 5th connecting rod and hippocampus part are rotationally connected by the 28 rotating shaft.

3. active sofa mechanical stretching device according to claim 1 and 2, it is characterized in that: described switch block comprises cable support, the drag-line switch, be provided with spring mounting hole one on the 6th connecting rod of left-hand side part and right side members, be provided with spring mounting hole two on side plate, be provided with regulating spring on STATEMENT OF FEDERALLY SPONSORED rivet is installed, sit on frame installation angle bar and be provided with the regulating spring installing hole, putting the leg both ends of the spring is hung on spring mounting hole one and spring mounting hole two, regulating spring is hung in regulating spring and installs on rivet and regulating spring installing hole, cable support is arranged on side plate, the drag-line switch is connected with the drag-line switch by the drag-line fixing hole on side plate.

4. active sofa mechanical stretching device according to claim 1 and 2, it is characterized in that: described fixed part comprises torsion resistant tube, drives square tube, stationary pipes, balance pipe, bottom tube connector, torsion resistant tube is fixed on the STATEMENT OF FEDERALLY SPONSORED of left-hand side part, right side members, driving square tube is fixed on the rotating shaft transmission spare of left-hand side part, right side members, stationary pipes is fixed on the first support member of left-hand side part, right side members, and balance pipe is fixed on the second support member of left-hand side part, right side members.