CN108272270B - Multi-connecting rod angle adjusting sofa bed - Google Patents

Abstract

The utility model provides a many connecting rods angle modulation sofa bed, including back, handrail, base, back footboard, preceding footboard and turn to remove the part, through pushing forward and the back is drawn the regulation pole that is arranged in the handrail, drive the connecting rod that is arranged in the base, make it slide in the connecting rod inslot, through back, preceding footboard and back footboard linkage, realize the change of angle, through the locating part that is arranged in the handrail part, the location locking of regulation pole at arbitrary angle, thereby the location sofa bed, through the universal wheel that turns to in the remove part realize the removal and the turning to of sofa and the bed of certain angle. The invention has the advantages of random adjustment and simultaneous adjustment of the inclination angles of the backrest and the pedal, random movement and steering of the sofa and the bed with certain angles, stable, reliable and compact sofa structure and the like, and has wide practical value in the aspects of use and operation.

Description

Multi-link angle adjustment sofa bed

technical field

The invention relates to a sofa bed, in particular to a multi-link angle-adjustable sofa bed.

Background technique

The common sofa bed realizes the adjustment of the backrest angle by adjusting the positions of different card slots, which has the disadvantages of small adjustment range and simple structure. In recent years, there have been some sofa beds that can adjust the backrest and the sofa footrest. The footrest and the backrest can be adjusted at the same time, but they cannot be adjusted separately and continuously.

Publication number is that the patent of CN 104957910A discloses a kind of folding sofa bed, comprises sofa cushion, support, armrest and backrest, and this backrest and mattress can be fixed at the angle between backrest and mattress when bed state and sofa state changeover, but can not Realize multi-angle continuous adjustment.

The patent of publication number CN 106388400A discloses a foldable sofa, including backrest vertical boards, left and right armrests, side boards, etc., which has the advantages of reliable structure and space saving, but in the folding process, the operation is inconvenient and cannot be realized. Any adjustment of the angle.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a multi-link angle-adjustable sofa bed. The sofa bed can realize the free conversion between the sofa bed and the seat, and realize the continuous adjustment of the angle.

In order to achieve the above object, the present invention adopts the following technical solutions:

A multi-link angle-adjustable sofa bed, including a backrest, an armrest, a base, a rear pedal, a front pedal and a steering moving part, is characterized in that:

The backrest includes a backboard, two support rods, multiple connecting shafts, two back long rods, two back short rods and two middle connecting rods;

One supporting rod is respectively fixed on both sides of the backboard, and the plurality of connecting shafts respectively pass through the backboard at the upper part, the middle part and the lower part and are hinged with the two supporting rods, and the lower parts of the two supporting rods are connected with the two supporting rods respectively. The two back long rods and one end of the two back short rods are hinged, and the two ends of the two intermediate connecting rods are respectively hinged with the middle of the two back long rods and the other ends of the two back short rods , one end of the two back short rods is also hinged with the two guide sliders, and the other end of the two back long rods is respectively hinged with the two base side rear end plates;

The armrest includes two rotating shafts, two armrest boards, two adjusting rods, two positioning components, two linkage rods and two guide shafts, and constitutes a left armrest and a right armrest respectively, and is constituted as follows: The rotating shaft passes through the middle part of the adjusting rod and is hinged with the middle part of the side long plate of the base. The armrest plate is fixedly installed with the base plate through the armrest mounting holes at the bottom of both ends, and there is a linkage rod receiving hole at the upper part of one end of the armrest plate. There is a moving groove for the adjustment rod on the top, and the positioning part is embedded in the side of the top. The adjustment rod passes through the moving groove of the adjustment rod. One end of the adjustment rod is a handrail protrusion, the other end has a U-shaped groove, and a semicircular card groove on the side; The above-mentioned guide shaft is embedded and passed through the U-shaped groove to be hinged with the connecting rod;

The positioning part includes an operating rod, a compression spring, a stopper and a positioning hole of the armrest plate. The upper end of the operating rod is roughly a hand contact point, the lower circumference of the middle part is a limit protrusion, and the lower end is a hemispherical contact point. Point, after the pressure spring and the stopper are set on the limit protrusion of the operating rod in sequence, the lower end of the operating rod passes through the positioning hole of the armrest board of the armrest board, and the hemispherical contact The point goes deep into the moving groove of the adjusting rod, the hand contact on the upper end of the operating rod extends out of the positioning hole of the armrest plate, and the stopper) is fixed in the middle of the positioning hole of the armrest plate;

The base includes two base side long plates, two base side rear end plates, four guide sliders, two connecting rods, two sliding shafts, base plate, supporting shaft and two base side front end plates; The upper and lower parts of both ends of the two base-side long plates have positioning holes, which are respectively embedded in the positioning pins of the front-end plates at one end of the two base-side front-end plates and the rear ends of one end of the two base-side rear end plates. Plate positioning pin shaft, there are two U-shaped slideways on the two ends of the two base side long plates, and the upper and lower surfaces of the U-shaped slideways have rectangular grooves for the four guide sliders to be embedded and slid. The middle sides of the side long plates of the two bases respectively have side long plate limit columns and side long plate spring fixing columns, and the bottoms of the other ends of the rear end plates of the two base sides are fixed by a rear end plate tension spring. The upper part of the side is fixedly connected with the two ends of the supporting shaft, the rectangular protrusions on the upper and lower surfaces of the four guide sliders are embedded in the rectangular grooves, the middle sides of the four guide sliders are connected to the The two ends of the two sliding shafts are respectively hinged, and the two ends of the two connecting rods are respectively hinged with the two ends of the two sliding shafts. The two connecting rods are embedded in the connecting rod grooves of the base plate and can be connected Slide in the rod groove, and there is a semicircular sliding shaft positioning groove at one end of the base plate;

The described rear pedal comprises two rear extension springs, two rear leg long rods, two rear leg short rods, two rear leg rods, two rear leg shafts and two rear middle rods; The two ends of the extension spring are respectively connected with the short plate extension spring fixed column and the rear leg extension spring fixed column positioned at the middle part of the two hind leg long rods, and one end of the two rear leg long rods is connected with the two rear leg rods respectively. The middle part is hinged at the lower position, and the other end is hinged with the rear end plates of the two base sides and one end of the two rear middle rods sequentially from top to bottom. The upper position is hinged, and the other end is hinged with two guide sliders. The middle part of the rear middle rod has a rear rod positioning column, and the other end is also hinged with the two guide sliders;

The front pedal includes a pedal, a plurality of front connecting shafts, two front leg rods, two front pedal short rods, two front pedal long rods, two front pedal middle rods and two front tension springs; Two front leg rods are respectively fixed on both sides of the pedal, and the multiple front connecting shafts respectively pass through the pedal at the upper, middle and lower parts, and are hinged with the two front leg rods, and the middle and middle parts of the two front leg rods are lower and respectively hinged with one end of the short rods of the two front pedals and the long rods of the two front pedals; The other ends of the middle rods of the two front pedals are hinged with the middle parts of the long rods of the two front pedals, and the other ends of the long rods of the two front pedals are respectively hinged with the two side long plates of the base. There is a front leg extension spring fixing post on the side of the middle part of the long rod, and a front rod positioning post is arranged on the lower part of the middle part. One end of the two front extension springs is fixed to the two long plate spring fixing posts, and the other end is fixed to the front leg extension spring fixing post. ;

Described steering moving part comprises flat top, two curved rods and four universal wheels, and the bottom of described two curved rods respectively fixes a universal wheel, and the flat top of described steering moving part is connected with described base ( 3) The base plate is fixed.

The number of the connecting shafts and the front connecting shafts can be increased or decreased according to actual needs.

There are two armrests and they are arranged symmetrically on both sides of the multi-link angle-adjusting sofa bed.

Each of the hinges described is pin connection or riveting.

The position of the adjusting rod is limited by pressing and ejecting the operating rod of the positioning part under the action of the pressure spring to realize positioning. The number of the positioning parts and the position on the top side of the armrest board are determined according to the actual angle adjustment requirements of the sofa bed , through the contact between the positioning part and the adjusting rod, the angle adjustment of the sofa bed is completed; in addition, when it becomes a seat, the sliding shaft located in the direction of the front pedal of the sofa snaps into the semicircular sliding shaft positioning groove of the base plate, and the two front pedals One side of the long rod is in contact with the long board limit post to complete the limit. When it becomes a bed, the two front pedal short rods are in contact with the front rod positioning post, and the two middle connecting rods are in contact with the rear rod positioning post to complete the limit. .

There are locking blocks at both ends of the linkage rod, and there are inner grooves in the circumferential direction, which can be freely extended, and can be auxiliary inserted into the semicircular slot on the side of the adjustment rod, and move together with the adjustment rod. After the adjustment is completed, the linkage rod is received The linkage rod storage hole completes the linkage rod storage.

The armrest protrusion of the adjusting rod is convenient for manual operation.

The two rear leg rods and the two front leg rods are plates with thin upper parts and thicker lower parts, and the thicker lower parts facilitate contact with the ground and increase stability.

The adjustment of the sofa bed is assisted by the action of two rear extension springs and two front extension springs.

Working process of the present invention is as follows:

Manually take out the linkage rod from the storage hole of the linkage rod, after stretching, snap into the semicircular slot of the adjustment rod, and move together with the adjustment rod to drive the guide shaft in the U-shaped groove, the guide shaft passes through the U-shaped groove and connects with the Rod connection, so as to drive the connecting rod to slide in the connecting rod groove, through the guide slider, respectively drive the rear leg short rod, the rear middle rod, the back short rod, the middle connecting rod, and the guide slider hinged with the guide slider The hinged front pedal short rod and the front pedal intermediate rod at the other end drive the linkage between the backboard and the front pedal to realize the angle adjustment of the sofa bed. The operating rod of the positioning part that pops up blocks the adjustment rod to realize positioning. Under the action of the spring and the front tension spring, the tension is realized. The short rod of the front pedal is in contact with the positioning column of the front rod, the middle connecting rod is in contact with the positioning column of the rear rod, and the sliding shaft is embedded in the positioning groove of the sliding shaft to realize the ultimate position of the sofa bed. limit.

Push the adjustment rod forward to realize the conversion of the seat mechanism in a similar motion mode. At this time, the long rod of the front pedal contacts the long plate limit post to realize the limit of the final seat posture.

When described sofa bed becomes bed, compared with prior art, the beneficial effect of the present invention is:

1) It overcomes the problem that the existing sofa bed cannot be continuously adjusted. It only needs to pull the linkage lever or the adjustment lever to realize the continuous adjustment of the angle, and realize the limit of the two states of the sofa bed and the seat through each limit column. Through positioning parts, rear tension spring and front tension spring, it can be adjusted at any angle, which is simple and reliable.

2) Universal wheels are fixed on the bottom of the curved bar, which is convenient to move and easy to carry; the height of the rear leg bar and the front leg bar exceeds the height of the curved bar and the universal wheels, so that the sofa bed becomes When seated, the rear leg bar and the front leg bar are in contact with the ground, the universal wheels are suspended, and the structure is reliable.

3) The present invention has the advantages of simple structure, convenient manufacture, smart use, high motion performance, and relatively low cost, and the overall structure is stable, reliable, and compact. It can be used as a chair or a bed, and can be used in a wide range of applications , has broad market prospects.

Description of drawings

Fig. 1 is a perspective view of an embodiment of a multi-link angle-adjusting sofa bed according to the present invention.

Fig. 2 is a perspective view of the backrest part and the angle-adjusting base part of the present invention.

Fig. 3 is a structural schematic diagram of the armrest part and the steering moving part of the present invention.

Fig. 4 is an exploded view of the armrest part and the angle adjustment base part of the present invention.

Fig. 5 is a structural schematic view of the rear pedal part and the front pedal part of the present invention.

Fig. 6 is a cross-sectional view of the positioning member of the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but the protection scope of the present invention should not be limited.

As shown in Figures 1 and 2, Figure 1 is a perspective view of an embodiment of a multi-link angle-adjusting sofa bed of the present invention, and Figure 2 is a perspective view of a backrest component and an angle-adjusting base component of the present invention. It can be seen from the figure that the multi-link angle adjustment sofa bed of the present invention includes a backrest 1, an armrest 2, a base 3, a rear pedal 4, a front pedal 5 and a steering moving part 6,

The backrest 1 includes a backboard 1-1, two support rods 1-2, four connecting shafts 1-3, two back long rods 1-4, two back short rods 1-5 and two middle Connecting rods 1-6; two support rods 1-2 are fixed on both sides of the backboard 1-1, and the four connecting shafts 1-3 pass through the backboard 1-1 at the upper, middle and lower parts respectively And be hinged with two support rods 1-2, the bottom of two support rods 1-2 is hinged with one end of described two back long rods 1-4 and two back short rods 1-5 respectively, described two The two ends of the middle connecting rod 1-6 are respectively hinged with the middle part of the two back long rods 1-4 and the other ends of the two back short rods 1-5, and the two back short rods 1-5 One end is also hinged with two guide sliders 3-3, and the other end of the two back long rods 1-4 is hinged with two base side rear end plates 3-2 respectively;

Referring to Figures 3 and 4, the armrest 2 includes two rotating shafts 2-1, two armrest panels 2-2, two adjusting rods 2-3, two positioning components 2-4, and two linkage rods 2 -5 and two guide shafts 2-6, and constitute the left handrail 2 and the right handrail 2 respectively, constitute as follows: the described rotating shaft 2-1 passes through the middle part of the adjusting rod 2-3 and the base side long plate 3-1 The middle part of the armrest plate 2-2 is fixedly installed with the base plate 3-6 through the armrest mounting holes 2-2-1 at the bottom of both ends, and the upper part of one end of the armrest plate 2-2 has a linkage rod receiving hole 2-2-2, there is an adjustment rod moving groove 2-2-3 on the top, and the top side is embedded with a positioning part 2-4, and the adjustment rod 2-3 passes through the adjustment rod moving groove 2-2-3, and the adjustment rod 2 One end of -3 is a handrail protrusion 2-3-1, the other end has a U-shaped groove 2-3-2, and the side has a semicircular card groove 2-3-3; the guide shaft 2-6 is embedded and penetrated Through the U-shaped groove 2-3-2 and the connecting rod 3-4 hinged;

The positioning part 2-4 includes an operating rod 2-4-1, a compression spring 2-4-2, a block 2-4-3 and a positioning hole 2-4-4 of the armrest plate, and the operating rod 2- The upper end of 4-1 is a slightly thicker hand contact 2-4-1-1, the lower circumference of the middle part is a limit protrusion 2-4-1-2, and the lower end is a hemispherical contact 2-4-1-3 , after the above-mentioned pressure spring 2-4-2 and stopper 2-4-3 are sleeved on the limit protrusion 2-4-1-2 of the operating rod 2-4-1, the operation The lower end of the rod 2-4-1 passes through the armrest plate positioning hole 2-4-4 of the armrest plate 2-2, and the hemispherical contact 2-4-1-3 of the armrest plate 2-2 goes deep into the adjustment In the rod moving groove 2-2-3, the hand contact 2-4-1-1 on the upper end of the operating rod 2-4-1 stretches out of the positioning hole 2-4-4 of the armrest plate, and the stopper 2 -4-3 is fixed in the middle of the positioning hole 2-4-4 of the armrest plate;

The base 3 includes two base side long plates 3-1, two base side rear end plates 3-), four guide sliders 3-3, two connecting rods 3-4, two sliding shafts 3- 5. Base plate 3-6, supporting shaft 3-7 and two base side front end plates 3-8; the upper and lower parts of the two base side long plates 3-1 have positioning holes 3-1- 1. Insert the front-end plate positioning pin 3-8-1 at one end of the two base-side front-end plates 3-8 and the rear-end plate positioning pin 3 at one end of the two base-side rear end plates 3-2 respectively -2-1, there are two U-shaped slides 3-1-2 on the two ends of the two base side long plates 3-1, and the upper and lower surfaces of the U-shaped slides 3-1-2 have rectangular The slot 3-1-3 is for the four guide sliders 3-3 to be embedded and slid, and the middle sides of the two base side long plates 3-1 respectively have side long plate limit posts 3-1-4 And side long plate spring fixed column 3-1-5, the other end side bottom of described two base side rear end plates 3-2 all has a rear end plate tension spring fixed column 3-2-2, and the side top is again with Both ends of the supporting shaft 3-7 are fixedly connected, and the rectangular protrusions 3-3-1 on the upper and lower surfaces of the four guide sliders 3-3 are embedded in the rectangular grooves 3-1-3. The middle sides of the four guide sliders 3-3 are respectively hinged with the two ends of the two sliding shafts 3-5, and the two ends of the two connecting rods 3-4 are respectively connected with the two sliding shafts 3-5. The two ends of the connecting rod 3-4 are embedded in the connecting rod groove 3-6-) of the base plate 3-6 and can slide in the connecting rod groove 3-6-1, and one end of the base plate 3-6 There is also a semicircular sliding shaft positioning groove 3-6-2;

Referring to Fig. 5, described rear pedal 4 comprises two rear extension springs 4-1, two rear leg long rods 4-2, two rear leg short rods 4-3, two rear leg rods 4-4, two rear leg rods 4-4, two A rear leg shaft 4-5 and two rear middle rods 4-6; the two ends of the two rear extension springs 4-1 are respectively connected with the short plate extension spring fixing column 3-2-2 and the two rear legs The rear leg extension spring fixing column 4-2-1 in the middle of the long rod 4-2 is connected, and one end of the two rear leg rods 4-2 is respectively hinged at the lower position of the middle part of the two rear leg rods 4-4 , the other end is hinged with two base side rear end plates 3-2 and one end of two rear middle rods 4-6 successively from top to bottom, and one end of the two rear leg short rods 4-3 is respectively connected with two The middle part of the rear leg bar 4-4 is hinged on the upper position, and the two guide sliders 3-3 at the other end are hinged. The middle part of the rear middle bar 4-6 has a rear bar positioning column 4-6-1, and the other end also Hinged with two guide sliders 3-3;

Described front pedal 5 comprises pedal 5-1, three front connecting shafts 5-2, two front leg rods 5-3, two front pedal short rods 5-4, two front pedal long rods 5-5, two A front pedal middle rod 5-6 and two front extension springs 5-7; two front leg rods 5-3 are respectively fixed on both sides of the pedal 5-1, and the three front connecting shafts 5-2 are The upper part, the middle part and the lower part pass through the pedal 5-1 respectively, and are hinged with the two front leg rods 5-3, and the middle part and the middle part of the two front leg rods 5-3 are connected with the short rods 5-3 of the two front pedal rods respectively. 4. One end of the long rods 5-5 of the two front pedals is hinged, and the other end of the short rods 5-4 of the two front pedals is hinged with the two guide sliders 3-3, and is connected with the middle rods 5-6 of the two front pedals One end is hinged, the other end of the two front pedal middle rods 5-6 is hinged with the middle part of the two front pedal long rods 5-5, and the other ends of the two front pedal long rods 5-5 are respectively connected to the side lengths of the two bases. The plate 3-1 is hinged, and the middle side of the two front pedal long rods 5-5 has a front leg extension spring fixing column 5-5-2, and a front rod positioning column 5-5-1 is arranged on the lower part of the middle part. One end of two front extension springs 5-7 is fixed with two long plate spring fixed posts 3-1-5, and the other end is fixed with front leg extension spring fixed posts 5-5-2;

Referring to Fig. 3, the steering moving part 6 includes a flat top 6-1, two curved rods 6-2 and four universal wheels 6-3, each of the bottoms of the two curved rods 6-2 is fixed with a universal wheel The wheel 6-3, the flat top 6-1 of the steering moving part 6 is fixed with the base plate 3-6 of the base 3.

As shown in Figure 1-5:

The number of the connecting shafts 1-3 and the front connecting shafts 5-4 can be increased or decreased according to actual needs.

There are two armrests 2 and they are arranged symmetrically on both sides of the multi-link angle-adjusting sofa bed.

Each of the hinges described is pin connection or riveting.

As shown in Figure 6:

By pressing and ejecting the operating rod 2-4-1 of the positioning part 2-4 under the action of the compression spring 2-4-2, the position of the adjusting rod 2-3 is limited to realize positioning. The positioning part 2-4 The quantity and the position on the top side of the armrest board 2-2 are determined according to the actual angle adjustment requirements of the sofa bed, and then the angle adjustment of the sofa bed is completed through the contact of the positioning part 2-4 and the adjustment rod 2-3; in addition, it becomes During the seat, the slide shaft 3-5 positioned at the front pedal direction of the sofa snaps into the semicircular slide shaft positioning groove 3-6-2 of the base plate 3-6, and one side of the two front pedal long rods 5-5 and the long board Limiting column 3-1-4 contact completes the limit, when becoming a bed, two front pedal short bars 5-4 contact with front bar positioning column 5-5-1, and two middle connecting rods 1-6 contact with rear bar positioning column 4-6-1 contact, complete stop.

As shown in Figure 1-6:

There are locking blocks 2-5-1 at both ends of the linkage rod 2-5, and there are inner grooves 2-5-2 in the circumferential direction, which can be freely elongated, and are auxiliary snapped into the semicircle on the side of the adjustment rod 2-3. The draw-in slot 2-3-3 moves together with the adjustment rod 2-3. After the adjustment, the linkage rod 2-5 is received in the linkage rod storage hole 2-2-2, and the linkage rod 2-5 is stored.

The armrest protrusion 2-3-1 of the adjusting rod 2-3 is convenient for manual operation.

The two rear leg rods 4-4 and the two front leg rods 5-3 are plates with a thin upper part and a thicker lower part, and the thicker lower part is convenient for contact with the ground and increases stability.

The height of described two rear leg rods 4-4 and two front leg rods 5-3 exceeds the height of curved rod 6-2 and universal wheel 6-3, when making sofa bed become seat, two rear leg rods 4 -4 and two front leg bars 5-3 are in contact with the ground, and four universal wheels 6-3 are suspended in the air, so that when the sofa bed becomes a seat, it is stable and does not move, and when it becomes a bed, four universal wheels 6 -3 free movement.

Under the effect of two rear extension springs 4-1 and two front extension springs 5-7, the adjustment of the described sofa bed is assisted.

The working process of the present invention is as follows:

Manually take out the linkage rod 2-5 from the linkage rod storage hole 2-2-2, after stretching, snap into the semicircular slot 2-3-3 of the adjustment rod 2-3, and move together with the adjustment rod 2-3 , drive the guide shaft 2-6 in the U-shaped groove (2-3-2), and the guide shaft 2-6 passes through the U-shaped groove 2-3-2 to be connected with the connecting rod 3-4, thereby driving the connecting rod 3-4 in Sliding in the connecting rod groove 3-6-1, through the guide slider 3-3, respectively drive the rear leg short rod 4-3 hinged with the guide slider 3-3, the rear middle rod 4-6) the back short rod 1- 5, the middle connecting rod 1-6, and the front pedal short rod 5-4 hinged with the other end of the guide slider 3-3, the front pedal middle rod 5-6, thereby driving the backboard 1-1 and the front pedal 5- The linkage of 1 realizes the angle adjustment of the sofa bed. The operating rod 2-4-1 of the pop-up positioning part 2-4 blocks the adjustment rod 2-3 to realize positioning. The rear tension spring 4-1 and the front tension spring 5 Under the effect of -7, realize tensioning, contact with front rod positioning post 5-5-1 through front pedal short rod 5-4, middle connecting rod 1-6 contacts with rear rod positioning post 4-6-1, and The sliding shaft 3-5 is embedded in the sliding shaft positioning groove 3-6-2 to realize the limitation of the ultimate position of the sofa bed.

Pushing forward the adjustment rod 2-3 can realize the conversion of the seat mechanism in a similar motion mode, and at this time, the limit of the final seat posture is realized by the contact of the front pedal long rod 5-5 with the long plate limit post 3-1-4 .

Use shows that the present invention has the following beneficial effects:

1) The present invention overcomes the problem that the existing sofa bed cannot be continuously adjusted. It only needs to manually pull the linkage lever or the adjustment lever to realize the continuous adjustment of the angle, and realize the limit of the two states of the sofa bed and the seat through each limit post. Position, through positioning parts, rear tension spring and front tension spring, it can be adjusted at any angle, which is simple and reliable.

2) universal wheels are fixed at the bottom of the curved bar according to the present invention, which is convenient to move and easy to carry; the height of the rear leg bar and the front leg bar exceeds the height of the curved bar and the universal wheels, so that the sofa bed becomes When it is a seat, the rear leg bar and the front leg bar are in contact with the ground, the universal wheels are suspended, and the structure is reliable.

3) The present invention has the advantages of simple structure, convenient manufacture, smart use, relatively low cost, stable, reliable and compact overall structure, can be used as a chair or a bed, can be widely used, and has broad market prospects.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above embodiments, but that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Accordingly, the embodiments should be regarded in all points of view as exemplary and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and it is therefore intended that the scope of the invention be defined by the appended claims rather than by the foregoing description. All changes within the meaning and range of equivalents of the elements are embraced in the present invention.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only includes an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (10)

1. The utility model provides a many connecting rods angle modulation sofa bed, includes back (1), handrail (2), base (3), back footboard (4), preceding footboard (5) and turns to moving part (6), its characterized in that:

the backrest (1) comprises a back plate (1-1), two support rods (1-2), a plurality of connecting shafts (1-3), two back long rods (1-4), two back short rods (1-5) and two middle connecting rods (1-6);

two support rods (1-2) are fixed on the side face of the back plate (1-1), the plurality of connecting shafts (1-3) penetrate through the back plate (1-1) at the upper part, the middle part and the lower part respectively and are hinged with the two support rods (1-2), the lower parts of the two support rods (1-2) are respectively hinged with one ends of the two back long rods (1-4) and the two back short rods (1-5), the two ends of the two middle connecting rods (1-6) are respectively hinged with the middle part of the two back long rods (1-4) and the other ends of the two back short rods (1-5), one ends of the two back short rods (1-5) are also hinged with the two guide sliding blocks (3-3), and the other ends of the two back long rods (1-4) are respectively hinged with the two base side rear end plates (3-2);

the handrail (2) comprises two rotating shafts (2-1), two handrail plates (2-2), two adjusting rods (2-3), two positioning components (2-4), two linkage rods (2-5) and two guide shafts (2-6), and respectively forms a left handrail (2) and a right handrail (2), and is formed as follows: the rotating shaft (2-1) passes through the middle part of the adjusting rod (2-3) to be hinged with the middle part of the long base side plate (3-1), the handrail plate (2-2) is fixedly installed with the base plate (3-6) through handrail installation holes (2-2-1) at the bottoms of the two ends, a linkage rod accommodating hole (2-2) is formed in the upper part of one end of the handrail plate (2-2), an adjusting rod moving groove (2-2-3) is formed in the top, a positioning component (2-4) is embedded in the side face of the top, the adjusting rod (2-3) passes through the adjusting rod moving groove (2-2-3), one end of the adjusting rod (2-3) is a handrail protrusion (2-3-1), the other end of the adjusting rod (2-3) is provided with a U-shaped groove (2-3-2), and a semicircular clamping groove (2-3-3) is formed in the side face of the handrail plate; the guide shaft (2-6) is embedded into and penetrates through the U-shaped groove (2-3-2) to be hinged with the connecting rod (3-4);

the positioning component (2-4) comprises an operating rod (2-4-1), a pressure spring (2-4-2), a stop block (2-4-3) and a handrail plate positioning hole (2-4-4), wherein the upper end of the operating rod (2-4-1) is a handrail contact (2-4-1-1), the circumference of the middle part of the operating rod, which is declined, is a limiting bulge (2-4-1-2), the lower end of the operating rod is a hemispherical contact (2-4-1-3), the pressure spring (2-4-2) and the stop block (2-4-3) are sleeved on the limiting bulge (2-4-1-2) of the operating rod (2-4-1) in sequence, after the hemispherical contact (2-4-1-3) at the lower end of the operating rod (2-4-1) passes through the handrail plate positioning hole (2-4-4) of the handrail plate (2-2), the adjusting rod moves in the groove (2-2-3), the upper end of the operating rod (2-4-1) stretches out of the handrail plate (2-4-1) to extend out of the handrail plate (2-1-3), the stop block (2-4-3) is fixed in the middle of the handrail plate positioning hole (2-4-4);

the base (3) comprises two base side long plates (3-1), two base side rear end plates (3-2), four guide sliding blocks (3-3), two connecting rods (3-4), two sliding shafts (3-5), a base plate (3-6), a supporting connecting shaft (3-7) and two base side front end plates (3-8); the upper part and the lower part of two ends of the two base side long plates (3-1) are respectively provided with a positioning hole (3-1-1), a front end plate positioning pin shaft (3-8-1) at one end of the two base side front end plates (3-8) and a rear end plate positioning pin shaft (3-2-1) at one end of the two base side rear end plates (3-2) are respectively embedded in the front end plate positioning pin shafts (3-8-1) and the rear end plate positioning pin shafts (3-2-1) at one end of the two base side long plates (3-1), two U-shaped slide ways (3-1-2) are arranged at the two end side surfaces of the two base side long plates (3-1), rectangular grooves (3-1-3) are arranged on the upper surface and the lower surface of the U-shaped slide way (3-1-2) for embedding and sliding of the four guide sliding blocks (3-3), the middle side long plate limiting columns (3-1-4) and the side long plate spring fixing columns (3-1-5) are respectively arranged at the middle side surfaces of the two base side long end plates (3-2), a tension spring fixing column (3-2) is arranged at the bottom of the other end surface of the two base side rear end plates (3-2), the upper surfaces of the four guide sliding blocks (3-3) are fixedly embedded in the rectangular grooves (3-3, the side surfaces of the middle parts of the four guide sliding blocks (3-3) are respectively hinged with two ends of the two sliding shafts (3-5), two ends of the two connecting rods (3-4) are respectively hinged with two ends of the two sliding shafts (3-5), the two connecting rods (3-4) are embedded into the connecting rod groove (3-6-1) of the base plate (3-6) and can slide in the connecting rod groove (3-6-1), and a semicircular sliding shaft positioning groove (3-6-2) is arranged at one end of the base plate (3-6);

the rear pedal (4) comprises two rear tension springs (4-1), two rear leg long rods (4-2), two rear leg short rods (4-3), two rear leg rods (4-4), two rear leg shafts (4-5) and two rear middle rods (4-6); the two ends of the two rear tension springs (4-1) are respectively connected with the rear end plate tension spring fixing column (3-2-2) and the rear leg tension spring fixing column (4-2-1) positioned in the middle of the two rear leg long rods (4-2), one end of the two rear leg long rods (4-2) is respectively hinged with the middle parts of the two rear leg rods (4-4) at the lower position, the other end of the two rear leg long rods is sequentially hinged with the rear end plate (3-2) at the side of the two bases and one end of the two rear middle rods (4-6) from top to bottom, one end of the two rear leg short rods (4-3) is respectively hinged with the middle parts of the two rear leg rods (4-4) at the upper position, the other end of the two guide sliding blocks (3-3) are hinged, the middle part of the rear middle rod (4-6) is provided with the rear rod positioning column (4-6-1), and the other end of the rear middle rod is also hinged with the two guide sliding blocks (3-3);

the front pedal (5) comprises a pedal (5-1), a plurality of front connecting shafts (5-2), two front leg rods (5-3), two front pedal short rods (5-4), two front pedal long rods (5-5), two front pedal middle rods (5-6) and two front tension springs (5-7); two front leg rods (5-3) are respectively fixed on two side surfaces of the pedal (5-1), three front connecting shafts (5-2) respectively penetrate through the pedal (5-1) at the upper part, the middle part and the lower part and are hinged with the two front leg rods (5-3), the middle part and the lower part of the two front leg rods (5-3) are respectively hinged with one ends of the two front pedal short rods (5-4) and the two front pedal long rods (5-5), the other ends of the two front pedal short rods (5-4) are hinged with the two guide sliding blocks (3-3) and are simultaneously hinged with one ends of the two front pedal middle rods (5-6), the other ends of the two front pedal middle rods (5-6) are hinged to the middle parts of the two front pedal long rods (5-5), the other ends of the two front pedal long rods (5-5) are respectively hinged to the two base side long plates (3-1), front leg tension spring fixing columns (5-5-2) are arranged on the side surfaces of the middle parts of the two front pedal long rods (5-5), front rod positioning columns (5-5-1) are arranged below the middle parts, one ends of the two front tension springs (5-7) are fixed with the side long plate spring fixing columns (3-1-5), and the other ends of the two front tension springs are fixed with the front leg tension spring fixing columns (5-5-2);

the steering moving component (6) comprises a flat top (6-1), two curved bars (6-2) and four universal wheels (6-3), wherein the universal wheels (6-3) are respectively fixed at the bottoms of the two curved bars (6-2), and the flat top (6-1) of the steering moving component (6) is fixed with the base plate (3-6) of the base (3);

the linkage rod (2-5) is manually taken out from the linkage rod containing hole (2-2-2), after the linkage rod is stretched, the linkage rod is clamped into a semicircular clamping groove (2-3-3) of the adjusting rod (2-3) and moves together with the adjusting rod (2-3), a guide shaft (2-6) in the U-shaped groove (2-3-2) is driven, the guide shaft (2-6) penetrates through the U-shaped groove (2-3-2) to be connected with the connecting rod (3-4), so that the connecting rod (3-4) is driven to slide in the connecting rod groove (3-6-1), the back leg short rod (4-3) hinged with the guiding sliding block (3-3) and the back short rod (1-5) and the middle connecting rod (1-6) are respectively driven, the front pedal short rod (5-4) hinged with the other end of the guiding sliding block (3-6) and the front pedal middle rod (5-6) are driven, the angle adjustment of the back plate (1-1) and the pedal (5-1) is driven to realize linkage of the bed is realized, and the positioning part (2-4) of the sofa is blocked through the adjusting rod (2-4), under the action of the rear tension spring (4-1) and the front tension spring (5-7), tensioning is achieved, the front pedal short rod (5-4) is contacted with the front rod positioning column (5-5-1), the middle connecting rod (1-6) is contacted with the rear rod positioning column (4-6-1), and the sliding shaft (3-5) is embedded into the sliding shaft positioning groove (3-6-2) to achieve limiting of the ultimate position of the sofa bed.

2. The multi-link angle adjusting sofa bed according to claim 1, wherein the number of the connecting shafts (1-3) and the front connecting shaft (5-2) is increased and decreased according to actual demands.

3. The multi-link angle adjustment sofa bed according to claim 1, characterized in that the number of armrests (2) is two and symmetrically arranged on both sides of the multi-link angle adjustment sofa bed.

4. The multi-link angle adjustment sofa bed according to claim 1, wherein each hinge is pin-connected or riveted.

5. The multi-link angle adjusting sofa bed according to claim 1, characterized in that the position of the adjusting rod (2-3) is limited by the pressing and ejecting of the operating rod (2-4-1) of the positioning component (2-4) under the action of the pressure spring (2-4-2), the positioning is realized, the number of the positioning components (2-4) and the position at the top side of the armrest plate (2-2) are determined according to the requirement of the actual sofa bed angle adjustment, and the contact of the positioning component (2-4) and the adjusting rod (2-3) is used for completing the angle adjustment of the sofa bed; in addition, when the sofa is changed into a seat, a sliding shaft (3-5) positioned in the direction of a sofa front pedal is clamped into a semicircular sliding shaft positioning groove (3-6-2) of a base plate (3-6), one side of each of two front pedal long rods (5-5) is contacted with a corresponding long plate limiting column (3-1-4) to finish limiting, and when the sofa is changed into a bed, each of two front pedal short rods (5-4) is contacted with a corresponding front rod positioning column (5-5-1), and each of two middle connecting rods (1-6) is contacted with a corresponding rear rod positioning column (4-6-1) to finish limiting.

6. The multi-link angle adjusting sofa bed according to claim 1, wherein the two ends of the linkage rod (2-5) are provided with clamping blocks (2-5-1), the circumference direction is provided with inner grooves (2-5-2), the semi-circular clamping grooves (2-3-3) which are clamped in the side surfaces of the adjusting rod (2-3) in an auxiliary manner can be freely stretched, the semi-circular clamping grooves and the adjusting rod can move together with the adjusting rod (2-3), the linkage rod (2-5) can be retracted into the linkage rod accommodating hole (2-2-2) after the adjustment is completed, and the linkage rod (2-5) is accommodated.

7. The multi-link angle adjusting sofa bed according to claim 1, wherein the armrest protrusion (2-3-1) of the adjusting lever (2-3) is convenient for a human hand to operate.

8. The multi-link angle adjusting sofa bed according to claim 1, wherein the two rear leg bars (4-4) and the two front leg bars (5-3) are plate members with thin upper parts and thick lower parts, and the lower parts are thick and convenient to contact with the ground, thereby increasing the stability.

9. The multi-link angle adjustment sofa bed according to any one of claims 1-7, characterized in that the height of the two rear leg bars (4-4) and the two front leg bars (5-3) exceeds the height of the curved bar (6-2) and the universal wheels (6-3), so that when the sofa bed becomes a seat, the two rear leg bars (4-4) and the two front leg bars (5-3) are in contact with the ground, and the four universal wheels (6-3) are suspended, so that the sofa bed is stable and does not move when the sofa bed becomes a seat, and is free to move through the four universal wheels (6-3) when the sofa bed becomes a bed.

10. Multi-link angle adjustment sofa bed according to any of claims 1-8, characterized in that the adjustment of the sofa bed is assisted by the action of two rear tension springs (4-1) and two front tension springs (5-7).

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