CN210471589U

CN210471589U - Novel folding sofa

Info

Publication number: CN210471589U
Application number: CN201921206722.7U
Authority: CN
Inventors: 蒋龙珠
Original assignee: Shanghai Good Should Cofrequency Technology Co ltd
Current assignee: Shanghai Good Should Cofrequency Technology Co ltd
Priority date: 2019-07-29
Filing date: 2019-07-29
Publication date: 2020-05-08
Anticipated expiration: 2029-07-29

Abstract

The utility model relates to a novel folding sofa, will folding sofa's length direction definition is left and right, will folding sofa's width direction definition is preceding, back, folding sofa's state changes between the state of accomodating and user state, its characterized in that, folding sofa includes main frame subassembly, cushion frame subassembly and back frame subassembly, and on cushion frame subassembly and back frame subassembly all located main frame subassembly, it is folding to drive back frame subassembly upset by fixing the back folding drive mechanism on main frame subassembly for the state of back frame subassembly changes between the state of accomodating and the user state.

Description

Novel folding sofa

Technical Field

The utility model relates to a folding sofa belongs to field of furniture.

Background

Sofas are commonly used furniture in family life to provide rest. With the rising of the modern house price, consumers prefer to select the folding sofa which saves space so as to achieve the purpose of improving the utilization rate of the household space.

Chinese patent with publication number CN 205030852U discloses a leisure sofa, which comprises universal wheels, a sofa frame, a flexible cushion layer and fillers, wherein the tops of the universal wheels are connected with sofa legs, the tops of the sofa legs are connected with the sofa frame, the top of the sofa frame is provided with the flexible cushion layer, the top of the flexible cushion layer is provided with cushion fillers and side leaning part fillers, the cushion fillers and the side leaning part fillers are made of water bags, and the water bags are connected with the sofa frame through bandages. Chinese patent with publication number CN 107536325 a discloses an automatic folding sofa based on thing networking comprises seat, backup plate, support device and handrail, the seat rotates with the backup plate through the pivot to be connected, be equipped with sealed dish on the seat face, the seat side is equipped with the jack, and seat and backup plate junction are equipped with the limiting plate, be equipped with the rotation hasp on the limiting plate, rotate the couple fixed connection of detaining on with the backup plate, sealed dish and the sealed fixed connection of inflatable packer, be equipped with the inflation hole on the sealed dish, the inflation hole is connected with the inside pump of seat. The rotation between the inflatable cushion, the lifting support, the detachable armrests and the seat plate and the backup plate is limited, so that the limitation of the application range of the sofa is removed, and the mobility is enhanced.

The folding sofa that relates in the prior publication patent still has a large volume and an irregular shape after being folded, and is difficult to realize effective storage.

Disclosure of Invention

The utility model aims at: provided is a foldable sofa which can be efficiently stored.

In order to achieve the above object, the present invention provides a novel folding sofa, the length direction of the folding sofa is defined as left and right, the depth direction of the folding sofa is defined as front and back, and the state of the folding sofa changes between the storage state and the use state, the folding sofa is characterized in that the folding sofa comprises a main frame assembly, a cushion frame assembly for placing a cushion and a back frame assembly for placing a back cushion, the cushion frame assembly and the back frame assembly are both arranged on the main frame assembly, and the back frame assembly is driven to fold by a back folding mechanism which is fixed on the main frame assembly and driven by an active force or manually operated, so that the state of the back frame assembly changes between the storage state and the use state; when the folding sofa is in a use state, the backrest folding mechanism can drive the backrest frame component to be folded to a storage state, and the backrest frame component, the main frame component and the cushion frame component form a storage structure together; when the folding sofa is in the storage state, the backrest folding mechanism can drive the backrest frame component to be folded to the use state.

Preferably, the main frame assembly and the cushion frame assembly are integrated into a main frame assembly, and when the folding sofa is in the storage state, the backrest folding mechanism drives the backrest frame assembly to be folded and stacked with the main frame assembly.

Preferably, the backrest frame assembly comprises a backrest frame, the back cushion is arranged on the backrest frame, the backrest frame is connected with the backrest folding mechanism through a turnover mechanism, and the backrest folding mechanism drives the backrest frame to turn over through the turnover mechanism, so that the backrest frame is switched between a storage state and a use state; folding legs are arranged on the back face of the backrest frame, and when the backrest folding mechanism drives the backrest frame to be turned to a horizontal state through the turning mechanism, the unfolded folding legs and the main frame assembly support the backrest frame together.

Preferably, the turnover mechanism comprises two groups of backrest rotating arms respectively positioned at the left side and the right side of the backrest frame; the backrest folding mechanism comprises a main power mechanism and a transmission mechanism fixed on two sides or any side of the main frame assembly; the main power mechanism transmits the moment to all the transmission mechanisms at the same time; one end of each group of backrest rotating arms is fixedly connected with the backrest frame, and the other end of each group of backrest rotating arms is connected with the transmission mechanism.

Preferably, the cushion frame assembly and the backrest frame assembly are respectively hinged to the front side and the rear side of the main frame assembly; when the folding sofa is in a storage state, the backrest folding mechanism drives the backrest frame assembly to turn and fold into the main frame assembly; the folding sofa further comprises a cushion frame turnover mechanism which is fixed on the main frame assembly and is driven by main power or manually operated, and the cushion frame assembly is driven to turn over by the cushion frame turnover mechanism; when the backrest frame assembly is in a storage state or a use state, the cushion frame assembly is horizontally arranged on the top surface of the main frame assembly; when the backrest frame assembly changes from the storage state to the use state or from the use state to the storage state, the cushion frame overturning mechanism drives the cushion frame assembly to overturn so as to leave a channel for the backrest frame assembly to overturn and fold out or overturn and fold into the main frame assembly.

Preferably, an overhanging assembly is arranged on the back frame assembly, and the overhanging assembly is driven by an overhanging driving mechanism to extend outwards or contract inwards along the front-back direction of the back frame assembly, so that the back frame assembly is conveniently stored in the main frame assembly.

Preferably, back folding mechanism reaches cushion frame tilting mechanism is integrated as a actuating mechanism by main power drive, and this actuating mechanism includes folding control mechanism and folding power unit, the cushion frame subassembly reaches the back frame subassembly links to each other with folding control mechanism, and folding control mechanism links to each other with folding power unit, and folding power unit drive folding control mechanism drives by folding control mechanism the cushion frame subassembly reaches the back frame subassembly is rotatory in order to realize the state of folding sofa changes between the state of accomodating and the user state.

Preferably, the extending driving mechanism comprises a backrest stretching mechanism driven by the folding control mechanism, and the backrest stretching mechanism drives the extending assembly to extend outwards or contract inwards along the length direction of the backrest frame assembly.

Preferably, the folding sofa further comprises a cushion self-locking mechanism arranged on the main frame assembly and used for locking the position of the cushion frame assembly in the unfolding process and a backrest stretching self-locking mechanism used for locking the position of the outward extending assembly extending outwards, the folding control mechanism drives the cushion self-locking mechanism to release the locking of the cushion frame assembly, and the folding control mechanism drives the backrest stretching self-locking mechanism to release the locking of the outward extending assembly.

Preferably, the folding sofa further comprises an AGV trolley, and the AGV trolley is arranged at the bottom of the main frame.

The utility model discloses a back frame construction and active folding actuating mechanism realize the automatic folding of sofa in the time, realize the automatic guide motion of sofa through chassis elevating system and active chassis mechanism again, thereby make the utility model discloses can fold to the storage place by automatic operation when not using and deposit, when using, can move by oneself and expand to waiting to use the place and supply the user to use, realize the high-efficient utilization of usage space.

Drawings

FIG. 1 is a perspective view of a first embodiment in a use state 1;

FIG. 2 is a perspective view of a first embodiment in a use state 2;

FIG. 3 is a perspective view of the first embodiment in a folded state;

FIG. 4 is a schematic mechanical diagram according to a first embodiment;

FIG. 5 is a schematic view of the framework of the first embodiment;

FIG. 6 is a schematic view of an AGV cart and an AGV frame according to an embodiment one;

FIG. 7 is a schematic view of a folding drive and AGV lifting configuration according to a first embodiment;

FIG. 8 is a flow chart of a variation and motion control method of the first embodiment;

FIG. 9 is a perspective view of the embodiment in a folded state;

FIG. 10 is a schematic view of the deployment process of the second embodiment 1;

FIG. 11 is a schematic illustration of the deployment process of the second embodiment 2;

FIG. 12 is a schematic view of the deployment process of the second embodiment 3;

FIG. 13 is a perspective view of the second embodiment in use state 2;

FIG. 14 is a disassembled view of the second embodiment;

FIG. 15 is a schematic view of a main frame according to the second embodiment;

fig. 16 is a schematic view of a cushion frame according to the second embodiment;

fig. 17 is a schematic view of a back frame of the second embodiment;

FIG. 18 is a schematic view of parts of a back frame according to the second embodiment;

FIG. 19 is a schematic view showing a part of the synchronizing push rod according to the second embodiment;

FIG. 20 is a schematic view of a folding control mechanism according to a second embodiment;

FIG. 21 is a schematic view of the folding control mechanism of the second embodiment in terms of parts 1;

FIG. 22 is a schematic view of the folding control mechanism of the second embodiment in terms of parts 2;

FIG. 23 is a schematic view of the folding control mechanism of the second embodiment in terms of parts 3;

FIG. 24 is a schematic view of an AGV lift mechanism according to a second embodiment;

FIG. 25 is a schematic view of an AGV frame according to a second embodiment;

FIG. 26 is a schematic view of an AGV according to the second embodiment;

FIG. 27 is a detailed view of the third embodiment.

Detailed Description

In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "vertical", "top", "bottom", "inner", "outer", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example one

As shown in fig. 1 to 4, the folding sofa disclosed in the present embodiment includes a main frame mechanism 1 on which a seat cushion 3 can be placed, a back frame mechanism 2 on which a back cushion 4 can be placed, an AGV carriage 5, an AGV lifting mechanism 6, and a folding driving mechanism 7.

The top surface of the main frame mechanism 1 is provided with a space for placing the cushion 3. The main frame mechanism 1 comprises a sofa framework 1-1, a hidden box body 1-2, a drawer 1-3 and a slide rail 1-4. The hidden box body 1-2 is arranged on the lower side of an upper deep beam 1-1-4 of the sofa framework 1-1, the drawer 1-3 is arranged inside the hidden box body 1-2, and the hidden box body 1-2 is connected with the drawer 1-3 through a sliding rail 1-4.

Referring to fig. 5, a sofa frame 1-1 is a frame structure, and the frame structure comprises front legs 1-1-1, rear legs 1-1-2, armrests 1-1-3, upper deep beams 1-1-4, lower deep beams 1-1-6, upper cross beams 1-1-7 and lower cross beams 1-1-8. A hidden box body fixing strip 1-1-5 for installing the hidden box body 1-2 is arranged between the upper deep beam 1-1-4 and the lower deep beam 1-1-6. The bottom of the upper deep beam 1-1-4 is provided with a chassis lifting fixed seat 1-1-9 and a chassis lifting slide block groove 1-1-10. A back plate fixing base 1-1-11 and a backrest rotating arm base 1-1-12 are arranged in the rear leg 1-1-2. The bottom of the upper beam 1-1-7 is provided with a folding driving motor seat 1-1-13 and an electric push rod base 1-1-14.

The top surface of the backrest frame mechanism 2 is provided with a space for placing a back cushion 4. The backrest frame mechanism 2 comprises a backrest frame body 2-1, the left side and the right side of the front part of the backrest frame body 2-1 are respectively provided with a folding foot base 2-2, and each folding foot base 2-2 is hinged with a folding foot 2-3. The front side and the rear side of each folding foot 2-3 are respectively provided with a supporting rod 2-4, one end of each supporting rod 2-4 is hinged in the middle of the folding foot 2-3, and the other end is embedded in the sliding groove 2-5. The other end of the folding foot 2-3 can slide in the sliding groove 2-5. The sliding groove 2-5 is fixed at the front part of the backrest frame body 2-1 and is positioned between the two folding foot bases 2-2. The left side and the right side of the rear part of the backrest frame body 2-1 are respectively symmetrically provided with a backrest rotating arm 2-6, and the backrest rotating arm 2-6 is hinged with a backrest rotating arm base 1-1-12 in the rear leg 1-1-2 at the same side.

The folding driving mechanism 7 fixed on the main frame mechanism 1 drives the backrest frame mechanism 2 to turn and fold. The back frame mechanism 2 may be folded in a reversed manner to a storage state shown in fig. 3, a first use state shown in fig. 1, or a second use state shown in fig. 2.

The folding driving mechanism 7 comprises a double-output-shaft motor 7-1, and the double-output-shaft motor 7-1 is arranged and fixed on a folding driving motor base 1-1-13 at the bottom of the upper beam 1-1-7. The output shafts on two sides of the double-output-shaft motor 7-1 are connected with respective transmission shafts 7-3 through respective couplers 7-2. Each transmission shaft 7-3 is further connected with a speed reducer 7-4. Two speed reducers 7-4 are respectively fixed inside the two rear legs 1-1-2 at the left side and the right side, and the backrest rotating arm 2-6 is hinged with the backrest rotating arm base 1-1-12 and is connected with the speed reducer 7-4 at the same side. The double-output-shaft motor 7-1 drives the two speed reducers 7-4 to synchronously rotate, the speed reducers 7-4 are matched with the backrest rotating arm bases 1-1-12 on the same side to drive the backrest rotating arms 2-6 on the same side to rotate, and the backrest frame mechanism 2 integrally rotates to a specified angle to realize the folding and unfolding functions of the sofa.

The other implementation mode of the folding driving mechanism 7 is that the motor 7-1 is directly installed at one side of the main frame mechanism 1 after being decelerated by the speed reducer 7-4, and then the backrest rotating arms 2-6 are integrally driven by the transmission shaft 7-3 to realize the driving of the rotating motion of the backrest rotating arms 2-6 at the same side, thereby realizing the overturning and folding of the backrest frame mechanism 2.

This implementation is described in detail in embodiment 3, and is not described herein again.

It should be noted that: after reading this application, the person skilled in the art can change the folding drive 7 to a manual configuration to achieve the same function, for example, using a recliner or a common stop structure for a car seat. In this case, the above-described conventional mechanism corresponds to a manually operated back folding mechanism.

The inside AGV dolly 5 that is provided with of main frame mechanism 1, AGV dolly 5 rises, descends through fixing AGV elevating system 6 on main frame mechanism 1. When the utility model discloses be in when accomodating the state, AGV elevating system 6 promotes AGV dolly 5 and descends to with ground contact, AGV dolly 5 drives the utility model discloses after moving to the assigned position, promote AGV dolly 5 by AGV elevating system 6 again and rise to and break away from the contact with ground. Subsequently, the folding driving mechanism 7 drives the back frame mechanism 2 to rotate to a specified angle, thereby completing the unfolding deformation of the utility model.

Referring to FIG. 6, the AGV trolley 5 includes a chassis frame 5-1 with an external convex beam, and a chassis beam 5-2 is arranged in the middle of the chassis frame 5-1. The middle part of the chassis beam 5-2 is provided with a chassis rotating shaft 5-3, and the chassis rotating shaft 5-3 is connected with the chassis 5-4 through a bearing 5-5, so that the chassis 5-4 can rotate 360 degrees around the central axis of the chassis rotating shaft 5-3. The chassis 5-4 is symmetrically provided with driving wheels 5-6 at two sides of the chassis rotating shaft 5-3. Each driving wheel 5-6 is arranged on a shaft in a penetrating way, two ends of the shaft are respectively provided with a bearing seat 5-7, and the bearing seats 5-7 are fixed on the chassis 5-4. One driving motor 5-8 is arranged beside each driving wheel 5-6, and the two driving motors 5-8 are fixed on the chassis 5-4. Each driving motor 5-8 is connected with a driving wheel 5-6 through a synchronous belt 5-9. The chassis 5-4 is also provided with a plurality of electromagnetic locks 5-10 with sensors, and the electromagnetic locks 5-10 are used for locking the angle between the chassis 5-4 and the chassis frame 5-1, so that the chassis 5-4 cannot rotate relative to the chassis frame 5-1. After the electromagnetic lock 5-10 locks the relative direction of the chassis 5-4 and the chassis frame 5-1, the driving wheels 5-6 rotate in the same direction, namely, simultaneously rotate forwards or backwards, the AGV trolley 5 can move forwards and backwards, the driving wheels 5-6 rotate in the opposite direction, namely, one moves forwards and backwards, and the AGV trolley 5 can move integrally left-turning and right-turning.

The bottom surface of the chassis frame 5-1 is provided with a caster 5-11. Chassis lifting slide block slots 5-13 and chassis lifting fixing seats 5-12 are symmetrically arranged on the left side and the right side of the top surface of the chassis frame 5-1.

The AGV lifting mechanism 6 comprises an electric push rod 6-1, and the electric push rod 6-1 is fixed on an electric push rod base 1-1-14 at the bottom of an upper cross beam 1-1-7. The head of the electric push rod 6-1 is provided with a transverse push rod 6-2, and two ends of the transverse push rod 6-2 are symmetrically provided with scissor type hinge mechanisms 6-3. Two ends of the upper end of a scissor type hinge mechanism 6-3 are respectively matched with a chassis lifting fixing seat 1-1-9 and a chassis lifting slide block groove 1-1-10 at the bottom of an upper deep beam 1-1-4 at the same side, and two ends of the upper end are respectively matched with a chassis lifting slide block groove 5-13 and a chassis lifting fixing seat 5-12 at the top surface of a chassis frame 5-1 at the same side. And a spring return assembly 6-4 is arranged on one side of the bottom surface of the outer convex beam at the two ends of the chassis frame 5-1. The electric push rod 6-1 drives the scissor type hinge mechanism 6-3 to move so as to realize the lifting function of the AGV trolley 5 relative to the main frame mechanism 1. When the 'internal steering' action needs to be completed, the electric push rod 6-1 drives the scissor type hinge mechanism 6-3 to move, and the AGV trolley 5 is pulled to ascend relative to the main frame mechanism 1. After the driving wheel 5-6 is separated from the ground and contacts the lower bottom surface of the hidden box body 1-2, the electromagnetic lock 5-10 releases the locking of the relative direction of the chassis 5-4 and the chassis frame 5-1. The driving wheel 5-6 rotates reversely, so that the relative direction of the chassis 5-4 and the chassis frame 5-1 is changed until the target is reached. The function has the advantage that the folding sofa can be transversely moved/obliquely moved at a certain angle.

It should be noted that: after reading the application, those skilled in the art can replace the AGV trolley 5 and the AGV lifting mechanism 6 with an AGV structure with mecanum wheels to realize the same transverse moving function. Furthermore, when the sofa is small in size and is convenient to freely turn in a narrow space, the lifting mechanism or the Mecanum wheels in the embodiment are omitted, and the common AGV trolley is feasible.

The utility model provides a method for deformation and movement of a folding sofa, which comprises the following steps:

s1) determining a command to fold the sofa: step S2) if the command is "fold and move to destination", step S3) if the command is "move to destination and unfold");

s2) the back frame mechanism 2 is collapsed into the folded state and step S3) is performed;

s3) the folding sofa receives the movement instruction string and enters the movement state to carry out the step S4);

s4) carrying out a motion process on the folding sofa according to the motion instruction string, comprising the following steps:

m1) judging whether the action is a traverse/skew preposed action "internal steering", if not, going to the step M2), if yes, pressing an internal steering command, going to the step M4);

m2) judging whether the action is forward/backward, if not, going to M3), if yes, going forward and positioning according to the command, going to step M4);

step M3) judging whether the action is integral steering, if not, going to step M5), if yes, integrally steering and positioning according to the command, and going to step M4);

m4) judging whether the positioning error is in the allowable range, if yes, going to step M5), and if not, requesting the control system to give a new motion command string and returning to step S3);

m5) whether the motion command string is executed completely, if not, returning to the step M1), if yes, going to the step M6)

M6) destination location determination: whether the whole sofa reaches the destination or not, if not, returning to S3), and if so, going to step S5);

s5) command judgment: go to step S6 if the command is "fold and stow"), go to step S7 if the command is "move to destination and deploy");

s6) the folding sofa enters the storage state, go to step S8);

s7) unfolding the backrest frame mechanism 2, and the sofa enters the use state, proceeding to step S8);

s8) ends the action and feeds back the information.

Example two

In the present embodiment, for convenience of description, the length direction of the folding sofa is defined as left and right, and the width direction of the folding sofa is defined as front and rear.

As shown in fig. 9 to 14 and 20, the novel folding sofa disclosed in this embodiment includes a main frame 8, a seat cushion frame 9 on which a seat cushion 17 can be placed, a back rest frame 10 on which a back cushion 16 can be placed, a folding power mechanism 11, a folding control mechanism 12, an AGV lifting mechanism 13, an AGV frame mechanism 14, an AGV chassis mechanism 15, a seat cushion self-locking mechanism 18, a back rest stretching mechanism 19, a back rest stretching self-locking mechanism 20, a side panel 21, a front panel 23, and a front opening door 22.

The cushion frame 9 and the backrest frame 10 are respectively arranged at the front side and the rear side of the top surface of the main frame 8, and special spaces for placing the cushion 17 and the back cushion 16 are reserved on the top surfaces of the cushion frame 9 and the backrest frame 10. The cushion frame 9 and the back frame 10 are turnable along the top surface turning seat axis of the main frame 8. The cushion frame 9 and the backrest frame 10 are connected with the folding control mechanism 12, the folding control mechanism 12 is connected with the folding power mechanism 11, the folding power mechanism 11 drives the folding control mechanism 12, and the cushion frame 9 and the backrest frame 10 are driven to turn over by the folding control mechanism 12 so as to realize that the state of the folding sofa changes between the storage state and the use state. When the folding sofa is in the stored state, the back frame 10 is located on the lower side of the seat cushion frame 9. When the folding sofa is in a use state, the cushion frame 9 is overturned and lifted to leave a passage, and after the backrest frame 10 is overturned and lifted from the lower side of the cushion frame 9, the cushion frame 9 is restored to a flat state to realize the change of the state of the folding sofa. An AGV lifting mechanism 13 is arranged inside the main frame 8, the AGV lifting mechanism 13 is connected with an AGV framework mechanism 14, and the AGV framework mechanism 14 is connected with an AGV chassis mechanism 15. When the folding sofa is to enter the storage state or the use state, the AGV lifting mechanism 13 drives the AGV frame mechanism 14 to rise, and further drives the AGV chassis mechanism 15 to the driving wheel to be separated from the ground. When the folding sofa is to enter a moving state, the AGV lifting mechanism 13 drives the AGV frame mechanism 14 to descend, and further drives the AGV chassis mechanism 15 to contact with the ground through the driving wheel, so that the AGV chassis mechanism 15 can drive the whole folding sofa to move to a specified position.

Referring to fig. 15, the main frame 8 comprises a sofa framework 8-1, a backrest rotating shaft base 8-2, a backrest limiting base 8-3, a folding power mechanism main machine base 8-4, a chassis lifting mechanism base 8-5, a folding power mechanism auxiliary machine limiting base 8-6, a cushion rotating shaft base 8-7, a steel cable steering wheel 8-8, a steel cable detection steering wheel 8-9, a sensor 8-10, a backrest stretching mechanism limiting pipe 8-11, a cushion self-locking mechanism limiting pipe 8-12, a backrest stretching self-locking mechanism limiting pipe 8-13 and a backrest stretching self-locking mechanism limiting sheet 8-14.

The backrest rotating shaft base 8-2 is arranged on one side of the sofa frame 8-1 in the left and right direction and is connected with the backrest frame 10 through a rotating shaft. The cushion rotating shaft base 8-7 is arranged at the other side of the sofa frame 8-1 in the left and right direction and is connected with the cushion frame 9 through a rotating shaft. The backrest limit base 8-3 is a limit stop for the backrest frame 10. The side edge of the steel cable detection steering wheel 8-9 is provided with a sensor 8-10, the steel cable detection steering wheel 8-9 can steer the steel cable 10-11, and the sensor 8-10 detects whether the steel cable detects that the steering wheel 8-9 rotates or not, so that the purposes of detecting the movement speed and the breakage or not of the steel cable 10-11 are achieved.

Referring to fig. 16, the cushion frame 9 comprises a cushion frame 9-1, a cushion rotating shaft seat 9-2, a cushion rotating shaft 9-3, a cushion turning push rod shaft 9-4 and a spring 9-5. The cushion rotating shaft seat 9-2 is arranged at one side of the cushion frame 9-1 in the front-back direction, and the cushion rotating shaft seat 9-2 is connected with the cushion rotating shaft base 8-7 through the cushion rotating shaft 9-3, so that the cushion frame 2 can turn around the cushion rotating shaft 9-3. A cushion turning push rod shaft 9-4 is arranged on one side or two sides of the left side and the right side of the cushion frame 9-1, and the cushion frame 9 is connected with a folding control mechanism 12 through the cushion turning push rod shaft 9-4.

Referring to fig. 17, the back frame 10 includes a back frame 10-1, a back rotary shaft seat 10-2 and a back rotary shaft 10-3 are provided on one side (defined as a rear side for convenience of description) of the back frame 10-1 in a front-rear direction, and the back rotary shaft seat 10-2 is hinged to the back rotary shaft seat 8-2 through the back rotary shaft 10-3, so that the back frame 10 is turned around the back rotary shaft 10-3. One side or two sides of the left side and the right side of the backrest frame body 10-1 are provided with backrest turning push rod shafts 10-4, and the backrest frame 10 is hinged with the folding control mechanism 12 through the backrest turning push rod shafts 10-4. The other side (defined as the front side for convenience of description) of the back frame 10-1 in the front-rear direction is provided with an overhang member 10-5, and the overhang member 10-5 is connected to the back frame 10-1 through an overhang push rod 10-7 and an overhang member bottom bar 10-6. The outward extending push rod 10-7 penetrates through a limiting hole in the front side of the backrest frame body 10-1 and then is connected with an outward extending piece bottom rod 10-6. The left end and the right end of the bottom rod 10-6 of the overhanging piece are respectively provided with a limit card 10-9, and the limit cards 10-9 can move back and forth along the left side frame and the right side frame of the backrest frame 10-1. The bottom bar 10-6 of the extension is connected to a bumper 10-12 fixed to the back frame 10-1. Pulling slide block assemblies 10-8 are arranged in the frames on the left side and the right side of the backrest frame body 10-1. The left and right ends of the front frame of the backrest frame 10-1 are respectively fixed with a steel cable steering wheel 10-10. One end of a steel cable 10-11 is connected with a pulling slide block assembly 10-8, and the other end of the steel cable bypasses a steel cable steering wheel 10-10 on the same side and then passes through a backrest limiting base 8-3, and is connected with a backrest stretching mechanism 19 after being steered twice by the steel cable steering wheel 8-8 and a steel cable detection steering wheel 8-9. The backrest stretching mechanism 19 is pushed by the folding control mechanism 17, so that the steel cable 10-11 is pulled and then the pulling slider assembly 10-8 is driven, and the extending assembly consisting of the extending element 10-5, the extending push rod 10-7 and the extending element bottom rod 10-6 can extend outwards relative to the backrest frame 10-1. When the extension assemblies are retracted inwardly relative to the back frame 10-1, the retraction is slowed by the bumper 10-12 to increase safety.

Referring to fig. 18, the pulling slider assembly 10-8 comprises a steel cable fixing plate 10-8-1, a slider 10-8-2, a pressure spring 10-8-3 and a positioning block 10-8-4. The steel cable fixing plate 10-8-1 is fixed on the sliding block 10-8-2 and extends out of the frames on the corresponding side in the frames on the left side and the right side of the backrest frame body 3-1 to fix the steel cable 10-11. Two ends of the pressure spring 10-8-3 are respectively contacted with the sliding block 10-8-2 and the positioning block 10-8-4. One end of one push rod positioned at the leftmost side or the rightmost side in the outward extending push rods 10-7 is fixedly connected with the slide block 10-8-2, and a pressure spring 10-8-3 is sleeved outside the end part. The other end of the push rod passes through a positioning hole on the positioning block 10-8-4 and then is connected and fixed with the extending piece 10-5. When the slider 10-8-2 is pulled by the cable 10-11, the slider 10-8-2 pushes the outrigger 10-7 and further pushes the outrigger 10-5 to be extended. At the same time, the compression spring 10-8-3 is compressed to generate restoring force. When the extending part 10-5 needs to retract, the steel cable 10-11 is loosened, the sliding block 10-8-2 slides back to the initial point under the restoring force provided by the pressure spring 10-8-3, and the extending part 10-5 retracts.

Referring to fig. 19 and 20, the folding power mechanism 11 includes a synchronous push rod main machine 11-1, an auxiliary machine 11-2, a transmission shaft 11-3, and a screw rod 11-4. The main machine 11-1 drives the transmission shaft 11-3 to rotate through the auxiliary machines 11-2 at two sides and then drives the corresponding screw rod 11-4 to move. The synchronous push rod main machine 11-1 is fixed on a main machine base 8-4 of the folding power mechanism, and the two auxiliary machines 4-2 positioned at the left side and the right side are fixed in the middle of two auxiliary machine limiting seats 8-6 of the folding power mechanism which are arranged up and down at the same side.

It should be noted that: after reading the present application, in consideration of cost, those skilled in the art may choose to dispose the cushion turning push rod shaft 9-4 on one of the left and right sides of the cushion frame 9-1 and the backrest turning push rod shaft 10-4 on one or both of the left and right sides of the backrest frame 10-1, and then it is feasible to employ a common electric push rod for the folding power mechanism 11.

Referring to fig. 20, 21 and 22, the folding control mechanism 12 comprises two limiting pipes 12-1, a backrest slide block 12-2, a backrest overturning push rod 12-3, a backrest pull ring 12-4, a synchronous push rod slide block 12-5, a synchronous push rod nut 12-6, an electromagnet 12-7, a bolt 12-8, an inserting plate 12-9, a cushion slide block 12-10, a cushion overturning push rod 12-11 and a pressure spring 12-12. Wherein, the two limit tubes 12-1 are arranged up and down, and the screw rod 11-4 is positioned between the two limit tubes 12-1. The front end and the rear end of each of the two limiting pipes 12-1 are respectively fixed on the auxiliary machine limiting seats 8-6 of the folding power mechanism. The backrest slide block 12-2, the synchronous push rod slide block 12-5 and the cushion slide block 12-10 are arranged on the limiting pipe 12-1 in a penetrating way, and the backrest slide block 12-2, the synchronous push rod slide block 12-5 and the cushion slide block 12-10 are limited by the limiting pipe 12-1. The cushion sliding block 12-10 and the backrest sliding block 12-2 are respectively positioned at the front side and the rear side of the synchronous push rod sliding block 12-5. The backrest overturning push rod 12-3 and the backrest pull ring 12-4 are fixed on the backrest sliding block 12-2, one end of the backrest overturning push rod 12-3 is hinged with the backrest sliding block 12-2, the other end is hinged with the backrest frame 10, and particularly, the other end of the backrest overturning push rod 12-3 is fixed on the backrest overturning push rod shaft 10-4. The synchronous push rod nut 12-6, the electromagnet 12-7, the bolt 12-8 and the inserting plate 12-9 are fixed on the synchronous push rod sliding block 12-5. The electromagnet 12-7 drives the bolt 12-8 and the inserting plate 12-9 to move up and down along the synchronous push rod sliding block 12-5. The latch pin 12-8 is fixed to one side of the synchronized push rod slider 12-5 such that the latch pin 12-8 is disposed opposite to the back-rest tab 12-4 and the latch pin 12-8 can be inserted into the back-rest tab 12-4. The inserting plate 12-9 is fixed on the other side of the synchronous push rod sliding block 12-5, a notch is arranged at the bottom of the synchronous push rod sliding block 12-5, the inserting plate 12-9 moves upwards to a position to make the notch clear, and the inserting plate 12-9 moves downwards to a position to block the notch. The synchronous push rod nut 12-6 penetrates through the screw rod 11-4, the synchronous push rod nut 12-6 converts the circumferential rotation of the screw rod 11-4 into the linear motion of the synchronous push rod nut 12-6, and the folding power mechanism 11 drives the synchronous push rod nut 12-6 to move back and forth through the screw rod 11-4, so that the synchronous push rod sliding block 12-5 is driven to move back and forth. The cushion overturning push rod 12-11 is fixed on the cushion sliding block 12-10, one end of the cushion overturning push rod 12-11 is hinged with the cushion sliding block 12-10, the other end is hinged with the cushion frame 9, particularly, the other end of the cushion overturning push rod 12-11 is fixed on the cushion overturning push rod shaft 9-4. A pressure spring 12-12 is sleeved on the limiting tube 12-1, and two ends of the pressure spring 12-12 are respectively contacted with the cushion sliding blocks 12-10 and the main frame 8.

When the synchronous push rod sliding block 12-5 moves back and forth along the limiting pipe 12-1 under the driving of the folding power mechanism 11, the synchronous push rod sliding block 12-5 pushes the backrest sliding block 12-2 or the cushion sliding block 12-10 and further pushes the backrest frame 10 or the cushion frame 9 to turn and lift. The electromagnet 12-7 drives the plug pin 12-8 and the plug board 12-9 to synchronously move through the fastening piece. When the electromagnet 12-7 drives the bolt 12-8 to be inserted into the backrest pull ring 12-4, the synchronous push rod sliding block 12-5 can pull the backrest sliding block 12-2 and drive the backrest frame 10 to turn over and descend, and the cushion sliding block 12-10 turns over and descends through the restoring force of the pressure spring 12-12.

Referring to fig. 20, the cushion self-locking mechanism 18 comprises a bolt 18-1, a horizontal push rod 18-2, a diagonal pull rod 18-3, a horizontal push rod positioning block 18-4 and a pressure spring. The bolt 18-1 and the pressure spring are positioned in the limit pipe 8-12 of the cushion self-locking mechanism, the bolt 18-1 can move up and down along the limit pipe 8-12 of the cushion self-locking mechanism, one end of the pressure spring in the limit pipe 8-12 of the cushion self-locking mechanism is contacted with the bolt 18-1, and the other end of the pressure spring is propped against the main frame 8. The top end of the bolt 18-1 is protruded out of the limit pipe 8-12 of the cushion self-locking mechanism under the action of the pressure spring. The horizontal push rod positioning block 18-4 is fixed on the side of the cushion self-locking mechanism limiting pipe 8-12. The flat push rod 18-2 is positioned in a limit groove of the flat push rod locating block 18-4, so that the flat push rod 18-2 can move back and forth. One end of the diagonal draw bar 18-3 is hinged with the horizontal push bar 18-2, the other end is connected with the lock tongue 18-1 through a connecting piece, and the connecting piece can move up and down in a limiting groove of the limiting pipe 8-12 of the cushion self-locking mechanism. The electromagnet 12-7 keeps an unlocking state, the synchronous push rod sliding block 12-5 is in contact with the cushion sliding block 12-10 under the pushing of the synchronous push rod nut 12-6, and the cushion sliding block 12-10 is pushed to move horizontally to a position where the bolt 18-1 is pressed down and passes through. After the cushion sliding blocks 12-10 integrally pass through the lock tongues 18-1, the lock tongues 18-1 bounce under the restoring force of the pressure spring and block the cushion sliding blocks 12-10, and the cushion frame 9 enters a locking state. The electromagnet 12-7 pushes the inserting plate 12-9 to slide downwards, so that the inserting plate 12-9 enters a limiting groove at the lower end of the synchronous push rod sliding block 12-5 and then blocks a notch of the synchronous push rod sliding block 12-5. Under the push of the synchronous push rod nut 12-6, the inserting plate 12-9 is in contact with the horizontal push rod 18-2 and pushes the horizontal push rod to move horizontally, one end of the diagonal pull rod 18-3 is further pulled and the other end drives the connecting piece to slide downwards in the limiting groove of the limiting pipe 8-12 of the cushion self-locking mechanism, so that the lock tongue 18-1 is pulled to slide downwards, and the cushion frame 9 is changed from a locking state to an unlocking state.

Referring to fig. 23, the backrest stretching mechanism 19 includes a T-shaped pushing piece 19-1, a cable fixing point 19-2, a sliding block 19-3 and a compression spring 19-4. The sliding block 19-3 and the pressure spring 19-4 are arranged in the limiting pipe 8-11 of the backrest stretching mechanism, and two ends of the pressure spring 19-4 are respectively contacted with the sliding block 19-3 and the main frame 8. A horizontal moving groove is formed in the limiting pipe 8-11 of the backrest stretching mechanism, a part of the T-shaped push piece 19-1 penetrates through the horizontal moving groove to be connected with the sliding block 19-3, and the T-shaped push piece 19-1 can move back and forth along the horizontal moving groove through the sliding block 19-3. The T-shaped push piece 19-1 is provided with a steel cable fixing point 19-2, and the steel cable fixing point 19-2 is used for being connected and fixed with the steel cable 10-11. The electromagnet 12-7 pushes the inserting plate 12-9 to slide downwards, so that the inserting plate 12-9 enters a limiting groove at the lower end of the synchronous push rod sliding block 12-5 and then blocks a notch of the synchronous push rod sliding block 12-5. Under the pushing of the synchronous push rod nut 12-6, the inserting plate 12-9 is in contact with the T-shaped pushing sheet 19-1 and pushes the T-shaped pushing sheet to horizontally move to the backrest stretching self-locking mechanism 20, and the backrest stretching self-locking mechanism 20 locks the backrest stretching mechanism 19.

As shown in fig. 20, the backrest stretching self-locking mechanism 20 comprises a lock tongue 20-1, an inclined push rod 20-2, an inclined push rod slider 20-3 and a pressure spring. The lock tongue 20-1 and the pressure spring are positioned in the limit pipe 8-13 of the backrest stretching self-locking mechanism, and the lock tongue 20-1 can move up and down along the limit pipe 8-13 of the backrest stretching self-locking mechanism. One end of a pressure spring in a limit pipe 8-13 of the backrest stretching self-locking mechanism is contacted with the bolt 20-1, and the other end of the pressure spring is propped against the main frame 8. The top end of the bolt 20-1 is protruded out of the limit pipe 8-13 of the backrest stretching self-locking mechanism under the action of the pressure spring. The inclined push rod sliding block 20-3 is fixed on the limit sheet 8-14 of the backrest stretching self-locking mechanism, and the inclined push rod sliding block 20-3 can move back and forth on the limit sheet 8-14 of the backrest stretching self-locking mechanism. One end of the inclined push rod 20-2 is connected with the inclined push rod sliding block 20-3 through a connecting piece, and the other end is connected with the bolt 20-1 through a connecting piece. A limit groove is arranged on the limit pipe 8-13 of the backrest stretching self-locking mechanism, the connecting piece penetrates through the limit groove to connect the inclined push rod 20-2 with the lock tongue 20-1, and the connecting piece can move up and down in the limit groove. Both ends of the inclined push rod 20-2 are hinged with the connecting piece.

The electromagnet 12-7 pushes the inserting plate 12-9 to slide downwards, so that the inserting plate 12-9 enters a limiting groove at the lower end of the synchronous push rod sliding block 12-5 and then blocks a gap of the synchronous push rod sliding block 12-5, the folding control mechanism 12 can drive the backrest stretching self-locking mechanism 20 to lock the backrest stretching mechanism 19, namely, the synchronous push rod nut 12-6 drives the synchronous push rod sliding block 12-5 to move upwards in the front and rear direction, the inserting plate 12-9 contacts the T-shaped push sheet 19-1 and then pushes the T-shaped push sheet 19-1 in one direction in the front and rear direction, and the T-shaped push sheet 19-1 is pushed to press downwards by the synchronous push rod sliding block 12-5 and passes through the position of the lock tongue 20-1. After the T-shaped push piece 19-1 integrally passes through the lock tongue 20-1, the lock tongue 20-1 bounces under the restoring force of the pressure spring and blocks the T-shaped push piece 19-1; the folding control mechanism 12 can also drive the backrest tension self-locking mechanism 20 to unlock the backrest tension mechanism 19, namely under the drive of the synchronous push rod nut 12-6, the back side of the inserting plate 12-9 is contacted with the inclined push rod slide block 20-3 and pulls the inclined push rod slide block 20-3 in the other direction of the front and back direction, so that the inclined push rod slide block 20-3 horizontally moves in the other direction of the front and back direction within the range limited by the backrest tension self-locking mechanism limiting plate 8-14. In the moving process, the inclined push rod sliding block 20-3 drives the lock tongue 20-1 to slide downwards through the inclined push rod 20-2, so that the backrest stretching self-locking mechanism 20 unlocks the backrest stretching mechanism 19, and finally the extending part 10-5 retracts under the combined action of gravity and the restoring force of the spring.

It should be noted that: after reading this application, it is also feasible that the folding power mechanism 11 and the folding control mechanism 12 may be eliminated and the folding and the turning may be manually performed to achieve the same function. At the moment, a hinged structure formed by connecting the cushion frame 9 and the main frame 8 through the cushion rotating shaft bases 8-7 and the rotating shaft is the manually-operated cushion frame overturning mechanism; a hinged structure formed by connecting a backrest rotating shaft seat 10-2 and a backrest rotating shaft base 8-2 through a backrest rotating shaft 10-3 between the backrest frame 10 and the main frame 8 is the backrest folding mechanism capable of being manually operated.

As shown in FIG. 24, the AGV lifting mechanism 13 comprises a main machine 13-1, 4 sections of transmission rods 13-2, 4 auxiliary machines 13-3, 4 screw telescopic legs 13-4, a chassis frame connecting rod 13-5, 4 synchronous push rod nuts 13-6 and a bottom box 13-7 with a driving wheel friction surface. The main machine 13-1, the transmission rod 13-2 and the auxiliary machine 13-3 are fixed in a bottom box 13-7 with a friction surface of a driving wheel, and the synchronous push rod nut 13-6 is matched with the screw rod telescopic leg 13-4 and fixed on the chassis frame connecting rod 13-5 so as to realize synchronous lifting of the chassis frame connecting rod 13-5.

As shown in FIG. 25, the AGV frame mechanism 14 comprises a frame 14-1, and universal wheels 14-2 are arranged at four corners of the bottom surface of the frame 14-1, and the universal wheels 14-2 contact with the ground during movement. Two sides of the top surface of the frame body 14-1 are provided with connecting rod pieces 14-3 for connecting chassis frame connecting rods 13-5. The middle of the top surface of the frame body 14-1 is provided with a cross beam 14-4, the height of the cross beam 14-4 is adjusted through a cushion block 14-5, the middle of the cross beam 14-4 is provided with a chassis rotating shaft fixing seat 14-6, and one side of the fixing seat 14-6 is provided with an electromagnetic lock 14-7.

As shown in FIG. 26, the AGV chassis mechanism 15 comprises a circular tray 15-1, a rotating shaft connecting seat 15-2 with a positioning hole at the top is arranged in the middle of the circular tray 15-1, and the rotating shaft connecting seat 15-2 is connected with a rotating shaft 15-3 through a bearing 15-4. The driving wheels 15-5 are symmetrically arranged on the circular tray 15-1, two sides of the driving wheels 15-5 are fixed on the circular tray 15-1 through bearing seats 15-6, the driving motors 15-7 are arranged beside the driving wheels 15-5, and the driving motors 15-7 are connected with the driving wheels 15-5 through synchronous belts 15-8.

Based on the structure, the method for controlling the deformation and the movement of the folding sofa comprises the following steps:

s1) determining a command to fold the sofa: step S2) if the command is "move to destination and expand", step S4) if the command is "fold and move to destination";

s2) performs action M1) and proceeds to next step S3):

m1) the folding sofa receives the movement instruction string, enters the movement state and carries out the movement process according to the movement instruction string:

m1-1) judging whether the action is a transverse/oblique movement preposed action 'internal steering', if not, going to the step M1-2), if yes, pressing an order to perform internal steering, and going to the step M1-4);

m1-2) whether the action is forward/backward, if not, go to M1-3), if yes, go forward and position according to the command, go to M1-4);

m1-3) whether the action is integral steering, if not, going to M1-5), if yes, the action is integral steering and positioning according to the command, and going to M1-4);

m1-4) judging whether the positioning error is in an allowable range: if yes, go to M1-5), otherwise request the control system to give a new motion command string and return to step M1);

m1-5) whether the motion command string is executed completely, if not, returning to M1-1), and if so, going to M1-6);

m1-6) destination location determination: whether the whole sofa reaches the destination or not, if not, returning to M1), if so, ending the action and feeding back information;

s3) performs the unfolding action M2) and proceeds to the next step S6):

m2) the folding sofa is unfolded to the working state:

m2-1) the cushion frame 9 is turned over and raised: the folding power mechanism 11 is started in the forward direction, the screw rod 11-4 is matched with the synchronous push rod nut 12-6 to push the synchronous push rod slide block 12-5 to move outwards, the cushion slide block 12-10 is pushed to move together after contacting the cushion slide block 12-10, the cushion overturning push rod 12-11 pushes the cushion frame 9 to overturn upwards and rise until the cushion slide block 12-10 moves to the position of the cushion self-locking mechanism 18, the bolt 18-1 is pressed down and passes through the bolt 18-1, and the bolt 18-1 bounces under the restoring force of the pressure spring and blocks the cushion slide block 12-10;

m2-2) the back frame 10 is turned up: the folding power mechanism 11 is started in the opposite direction, the synchronous push rod sliding block 12-5 is pulled to move inwards, the synchronous push rod sliding block stops after contacting the backrest sliding block 12-2, the electromagnet 12-7 pushes the bolt 12-8 to slide downwards and keep the state, the folding power mechanism 11 is started again to enable the bolt 12-8 to be aligned to the backrest pull ring 12-4, the electromagnet 12-7 pushes the bolt 12-8 to move upwards and insert the backrest pull ring 12-4, the synchronous push rod sliding block 12-5 continues to push the backrest sliding block 12-2 to move inwards, and the backrest overturning push rod 12-3 pushes the backrest frame 10 to overturn upwards and lift from the inside of the main frame 8 until the backrest frame 10 contacts the backrest limiting base 8-3 and then stops;

m2-3) back frame 10 is unfolded: the folding power mechanism 11 is started in the forward direction, the synchronous push rod sliding block 12-5 is pushed to move outwards to the initial position of the backrest stretching mechanism 19, the electromagnet 12-7 pushes the inserting plate 12-9 to slide downwards to enter the limiting groove at the lower side of the synchronous push rod sliding block 12-5 and block the notch, the synchronous push rod sliding block 12-5 is pushed to continue moving outwards and push the lower inserting plate 12-9 to contact with the T-shaped pushing plate 19-1 and push the lower inserting plate to move horizontally to the backrest stretching self-locking mechanism 20 to lock the backrest stretching mechanism 19, meanwhile, the steel cable 10-11 is pulled by the T-shaped push piece 19-1, and the slider assembly 10-8 is further pulled, so that the extending piece 10-5, the extending push rod 10-7 and the extending piece bottom rod 10-6 can extend outwards relative to the backrest frame 10-1, and the backrest frame 10 completes the extending action and is locked.

M2-4) the cushion frame 9 is turned over and lowered: the electromagnet 12-7 withdraws the inserting plate 12-9 to enable the synchronous push rod sliding block 12-5 to keep a passing state, the folding power mechanism 11 continues to move forward to be in contact with the flat push rod 18-2, the electromagnet 12-7 pushes the inserting plate 12-9 to slide downwards to enter a limiting groove at the lower side of the synchronous push rod sliding block 12-5 and block a notch, the inserting plate 12-9 pushes the flat push rod 18-2 to move horizontally, one end of the inclined pull rod 18-3 is further pulled to enable the other end of the inclined pull rod to slide downwards under the limiting action of the limiting pipe 8-12 of the cushion self-locking mechanism, and the lock tongue 18-1 is further pulled to slide downwards, so that the cushion frame 9 is changed into. The folding power mechanism 11 is reversely started, the cushion sliding blocks 12-10 move inwards under the action of restoring force of the pressure spring and contact the synchronous push rod sliding blocks 12-5, and under the combined action of the restoring force of the pressure spring and the gravity component of the cushion frame 9, the cushion frame 9 turns and falls and returns to the horizontal state.

S4) performs action M1) and proceeds to next step S5):

s5) performing the folding action M3) and proceeding to the next step S6):

m3) folding the sofa into the storage state:

m3-1) the cushion frame 9 is turned over and raised: the folding power mechanism 11 is started in the forward direction, the screw rod 11-4 is matched with the synchronous push rod nut 12-6 to push the synchronous push rod slide block 12-5 to move outwards, the cushion slide block 12-10 is pushed to move together after contacting the cushion slide block 12-10, the cushion overturning push rod 12-11 pushes the cushion frame 9 to overturn upwards and rise until the cushion slide block 12-10 moves to the position of the cushion self-locking mechanism 18, the bolt 18-1 is pressed down and passes through the bolt 18-1, and the bolt 18-1 bounces under the restoring force of the pressure spring and blocks the cushion slide block 12-10;

m3-2) back frame 10 retracted: the folding power mechanism 11 is started in the opposite direction, after the synchronous push rod sliding block 12-5 moves inwards to the position of the backrest stretching self-locking mechanism 20, the electromagnet 12-7 pushes the inserting plate 12-9 to slide downwards to enter a limiting groove at the lower side of the synchronous push rod sliding block 12-5 and block a notch, the synchronous push rod sliding block 12-5 continues to move in the opposite direction, the back side of the inserting plate 12-9 is in contact with the inclined push rod sliding block 18-3 and is pulled to move horizontally in the range limited by the backrest stretching self-locking mechanism limiting piece 8-14, the inclined push rod sliding block 18-3 pushes the inclined push rod 18-2 to slide downwards and drives the lock tongue 20-1 to slide downwards, the backrest stretching mechanism 19 is unlocked, the extending piece 10-5 retracts under the combined action of gravity and the spring restoring.

M3-3) the back frame 10 is turned down: the folding power mechanism 11 continues to move in the reverse direction until the synchronous push rod sliding block 12-5 approaches the position of the backrest sliding block 12-2 and stops, the electromagnet 12-7 pushes the bolt 12-8 to slide downwards and keep the state, the folding power mechanism 11 is started again to enable the bolt 12-8 to be aligned with the backrest pull ring 12-4, then the electromagnet 12-7 pushes the bolt 12-8 to move upwards and insert the backrest pull ring 12-4, the folding power mechanism 11 is started in the forward direction, the synchronous push rod sliding block 12-5 pulls the backrest sliding block 12-2, and the backrest overturning push rod 12-3 drives the backrest frame 10 to overturn and descend to be accommodated in the main frame 8.

M3-4) the cushion frame 9 is turned over and lowered: the electromagnet 12-7 withdraws the inserting plate 12-9 to enable the synchronous push rod sliding block 12-5 to keep a passing state, the folding power mechanism 11 continues to move forward to be in contact with the flat push rod 18-2, the electromagnet 12-7 pushes the inserting plate 12-9 to slide downwards to enter a limiting groove at the lower side of the synchronous push rod sliding block 12-5 and block a notch, the inserting plate 12-9 pushes the flat push rod 18-2 to move horizontally, one end of the inclined pull rod 18-3 is further pulled to enable the other end of the inclined pull rod to slide downwards under the limiting action of the limiting pipe 8-12 of the cushion self-locking mechanism, and the lock tongue 18-1 is further pulled to slide downwards, so that the cushion frame 9 is changed into. The folding power mechanism 11 is reversely started, the cushion sliding blocks 12-10 move inwards under the action of the restoring force of the compression springs 12-12 and contact the synchronous push rod sliding blocks 12-5, and under the combined action of the restoring force of the compression springs 12-12 and the gravity component of the cushion frame 9, the cushion frame 9 turns and falls and returns to the horizontal state.

S6) ends the action and feeds back the information.

EXAMPLE III

Referring to fig. 27, the folding sofa of the present embodiment is different from the second embodiment in that: the driving device of the cushion frame 9 and the backrest frame 10 is different, and the cushion frame and the backrest frame are directly driven by a large-torque motor. It should be noted that: after reading the present application, a person skilled in the art may adopt a mode of direct driving by a motor for driving the driving devices of the cushion frame 9 and the backrest frame 10, or adopt a mode of driving by a motor through an intermediate component as disclosed in the first embodiment and the second embodiment, or combine the two driving modes, for example, the driving device of the cushion frame 9 adopts a mode of direct driving by a motor, and the driving device of the backrest frame 10 adopts a mode of driving by a motor through an intermediate component, or the driving device of the cushion frame 9 adopts a mode of driving by a motor through an intermediate component, and the driving device of the backrest frame 10 adopts a mode of direct driving by a motor.

The folding mechanism comprises a main frame 8, a folding power mechanism host base 8-4, a folding power mechanism auxiliary machine limiting seat 8-6, a steel cable steering wheel 8-8, a steel cable detection steering wheel 8-9, a sensor 8-10, a backrest stretching mechanism limiting tube 8-11, a cushion self-locking mechanism limiting tube 8-12, a backrest stretching self-locking mechanism limiting tube 8-13 and a backrest stretching self-locking mechanism limiting sheet 8-14, and motor fixing seats 8-15 are arranged on two sides or one side of the main frame 8.

The folding power mechanism 11 is changed into a cushion turning motor 11-5 and a backrest turning motor 11-6 which are respectively fixed on motor fixing seats 8-15.

The folding control mechanism 12 is changed into a cushion overturning gear box 12-13 and a backrest overturning gear box 12-14 which are respectively connected with a cushion overturning motor 11-5 and a backrest overturning motor 11-6 and fixed on one side or two sides of the main frame 8.

The cushion rotating shaft 9-3 of the cushion frame 9 and the backrest rotating shaft 10-3 of the backrest frame 10 are changed into a cushion hexagonal transmission shaft 9-6 and a backrest hexagonal transmission shaft 10-13, and the corresponding round holes of the cushion rotating shaft seat 9-2 and the backrest rotating shaft seat 10-2 are changed into hexagonal holes suitable for the hexagonal transmission shafts, so that the cushion frame 9 and the backrest frame 10 can be driven to turn by the hexagonal transmission shafts.

The cushion self-locking mechanism 18, the backrest stretching mechanism 19 and the backrest stretching self-locking mechanism 20 are eliminated, and the buffer 10-12 of the back cushion frame 10 is changed into an electric push rod to realize the stretching function of the backrest frame 10.

In the other structure of the present embodiment, as in the second embodiment, the seat cushion turnover motor 11-5 and the backrest turnover motor 11-6 directly control the turnover, lifting and lowering of the seat cushion frame 9 and the backrest frame 10 during the sofa unfolding operation.

Claims

1. A novel folding sofa, define the length direction of the said folding sofa as left, right, define the depth direction of the said folding sofa as the front, back, the state of the said folding sofa changes between storage state and service condition, characterized by that, the said folding sofa includes the main frame assembly, seat frame assembly used for placing cushion and back frame assembly used for placing the back cushion, seat frame assembly and back frame assembly are all located on the main frame assembly, drive the folding of the back frame assembly by the back folding mechanism that is set up on the main frame assembly and is driven by the main power or manual operation, make the state of the back frame assembly change between storage condition and service condition; when the folding sofa is in a use state, the backrest folding mechanism can drive the backrest frame component to be folded to a storage state, and the backrest frame component, the main frame component and the cushion frame component form a structure convenient to store together; when the folding sofa is in the storage state, the backrest folding mechanism can drive the backrest frame component to be unfolded to the use state, and the backrest frame component, the main frame component and the cushion frame component form a structure for use together.

2. The foldable sofa of claim 1, wherein the main frame assembly and the cushion frame assembly are integrated into a main frame assembly, and the backrest folding mechanism causes the backrest frame assembly to fold upside down to be stacked on top of the main frame assembly when the foldable sofa is in the stowed position.

3. The novel foldable sofa of claim 2, wherein the backrest frame assembly comprises a backrest frame for placing a back cushion, the backrest frame is connected to the backrest folding mechanism through a turnover mechanism, the backrest folding mechanism drives the backrest frame to turn over through the turnover mechanism, so that the backrest frame is switched between the storage state and the use state; folding legs are arranged on the back face of the backrest frame, and when the backrest folding mechanism drives the backrest frame to be turned to a horizontal state through the turning mechanism, the unfolded folding legs and the main frame assembly support the backrest frame together.

4. The new folding sofa of claim 3, wherein said turnover mechanism comprises two sets of backrest rotation arms located on the left and right sides of said backrest frame, respectively; the backrest folding mechanism comprises a main power mechanism and a transmission mechanism fixed on two sides or any side of the main frame assembly; the main power mechanism transmits the moment to all the transmission mechanisms at the same time; one end of each group of backrest rotating arms is fixedly connected with the backrest frame, and the other end of each group of backrest rotating arms is connected with the transmission mechanism.

5. The new folding sofa of claim 1, wherein said cushion frame assembly and said back frame assembly are hinged to said main frame assembly on both front and back sides, respectively; when the folding sofa is in a use state, the backrest folding mechanism drives the backrest frame assembly to turn and fold into the main frame assembly; the folding sofa further comprises a cushion frame turnover mechanism which is fixed on the main frame assembly and is driven by main power or manually operated, and the cushion frame assembly is driven to turn over by the cushion frame turnover mechanism; when the backrest frame assembly is in a storage state or a use state, the cushion frame assembly is horizontally arranged on the top surface of the main frame assembly; when the backrest frame assembly changes from the storage state to the use state or from the use state to the storage state, the cushion frame overturning mechanism drives the cushion frame assembly to overturn so as to leave a channel for the backrest frame assembly to overturn and fold out or overturn and fold into the main frame assembly.

6. The new foldable sofa of claim 5, wherein the back frame assembly has an outward extending assembly, and the outward extending assembly is driven by an outward extending driving mechanism to extend outward or retract inward along the front-back direction of the back frame assembly, so as to facilitate the accommodation of the back frame assembly in the main frame assembly.

7. The foldable sofa of claim 6, wherein the backrest folding mechanism and the cushion frame turning mechanism are integrated into a driving mechanism driven by a main power, the driving mechanism comprises a folding control mechanism and a folding power mechanism, the cushion frame assembly and the backrest frame assembly are connected with the folding control mechanism, the folding control mechanism is connected with the folding power mechanism, the folding power mechanism drives the folding control mechanism, and the folding control mechanism drives the cushion frame assembly and the backrest frame assembly to rotate so as to change the state of the foldable sofa between the storage state and the use state.

8. The new folding sofa of claim 7, wherein the extension driving mechanism includes a backrest extension mechanism driven by the folding control mechanism, the backrest extension mechanism driving the extension assembly to extend outward or retract inward along the depth of the backrest frame assembly.

9. The new foldable sofa of claim 8, further comprising a cushion self-locking mechanism for locking the position of the cushion frame assembly during unfolding and a backrest stretch self-locking mechanism for locking the position of the outwardly extending assembly on the main frame assembly, wherein the folding control mechanism drives the cushion self-locking mechanism to unlock the cushion frame assembly and the folding control mechanism drives the backrest stretch self-locking mechanism to unlock the outwardly extending assembly.

10. The folding sofa of claim 1, further comprising an AGV cart disposed at the bottom of the main frame.