CN115919100B

CN115919100B - Push-pull sofa bed

Info

Publication number: CN115919100B
Application number: CN202211520810.0A
Authority: CN
Inventors: 李云海; 马贤君; 谢淑辉; 李凯; 王宇
Original assignee: Kuka Home Co Ltd
Current assignee: Kuka Home Co Ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2024-03-19
Anticipated expiration: 2042-11-30
Also published as: CN115919100A

Abstract

The application relates to a push-and-pull sofa bed relates to the technical field of sofa bed, including handrail, mounting bracket, be provided with sofa bed device on the mounting bracket, sofa bed device includes: the first backrest is rotatably arranged on the mounting frame; the sliding frame is arranged on the mounting frame in a sliding manner; the seat frame is arranged on the sliding frame in a sliding manner; the second backrest is rotatably arranged on the first backrest and the seat frame; and the locking mechanism is arranged on the mounting frame and used for positioning the first backrest. The utility model provides an adjust through only need pulling or promote seat frame to improved the convenience in sofa in the use, but also can adjust the angle of first back and second back as required, adjust the back of accomplishing, locking mechanical system starts and fixes a position first back and second back position, thereby has improved travelling comfort and convenience when human use.

Description

Push-pull sofa bed

Technical Field

The application relates to the technical field of sofa beds, in particular to a push-pull sofa bed.

Background

The sofa bed is furniture capable of being used as a sofa and a bed, the arrangement of a modern living room is more and more concise, the multifunctional furniture becomes more and more popular choice, and the sofa bed is one of the furniture, and in a small living room, one sofa bed is necessary for meeting the occasional living needs of visitors.

The sofa bed can be placed in a living room or a study room to serve as a seat; the sofa bed is unfolded at night when a guest comes, and the bed is just a bed after the sleeping bed is laid. In ordinary house type such as two halls in three rooms, the sofa bed also can be outside the guest sleeping bed, helps owner to cope with occasional visiting of a plurality of guests, and therefore convenience and comfort of sofa bed regulation are vital, and the general pull formula structure of current sofa bed, extension are hidden in current sofa face below, and the extension is in airtight space for a long time and can appear the off-flavor and stretch to the problem such as mildewing and inconvenient clearance, and the angle of the back of sofa can not be adjusted or is adjusted limitedly moreover to convenience and comfort when having reduced sofa bed and used.

Disclosure of Invention

In order to improve convenience and comfort of sofa bed when using, this application provides a push-pull sofa bed.

The application provides a push-and-pull sofa bed adopts following technical scheme:

the utility model provides a push-and-pull sofa bed, includes the handrail, sets up the mounting bracket on the handrail, be provided with sofa bed device on the mounting bracket, sofa bed device includes:

the first backrest is rotatably arranged on the mounting frame;

the sliding frame is arranged on the mounting frame in a sliding manner;

the seat frame is arranged on the sliding frame in a sliding mode along the sliding direction of the sliding frame, and the sliding frame and the seat frame are both supported on the ground;

the second backrest is rotatably arranged on the first backrest and the seat frame and is positioned between the first backrest and the seat frame;

and the locking mechanism is arranged on the mounting frame and used for positioning the first backrest.

By adopting the technical scheme, when the sofa is required to be converted into a bed for use, the locking mechanism is unlocked, then the seat frame is pulled to move to drive the first backrest and the second backrest to rotate and move, so that the first backrest and the second backrest are erected on the mounting frame, the sofa is converted into the bed for use, and when the sofa bed is required to be retracted, the seat frame is pushed to move to drive the first backrest and the second backrest to rotate and move simultaneously, so that opposite ends of the first backrest and the second backrest move upwards, and after the rotation is completed, the locking mechanism starts the first backrest, the second backrest and the seat frame to be positioned, so that the conversion of the sofa bed is realized;

the first backrest, the second backrest and the seat frame are all located the outside, so that the convenience of cleaning the sofa is improved, the odor-changing or mildew-generating probability is reduced, the comfort of the sofa in use is improved, the seat frame is pulled or pushed to realize adjustment, the convenience of the sofa in use is improved, the angle of the first backrest and the angle of the second backrest can be adjusted as required, and after the adjustment, the locking mechanism is started to position the first backrest and the second backrest, so that the comfort and the convenience of the sofa in use are improved.

Optionally, the locking mechanism includes:

the locking disc is arranged on the first backrest and is rotationally connected with the mounting frame, and a plurality of locking grooves are formed in the partial side wall of the locking disc around the axis array of the rotating direction of the locking disc;

the locking column is arranged on the mounting frame, and the axis of the locking column is parallel to the axis of the rotation direction of the locking disc;

the locking rod is rotatably arranged on the locking column;

the locking spring is connected with the mounting frame and the locking rod at two ends respectively, and when the seat frame is pulled to move and is converted into a bed, the locking rod is clamped and installed on the locking groove under the action of the locking spring and used for blocking the seat frame from moving back, and friction resistance for blocking the seat frame and the sliding frame from moving is formed between the mounting frame and the sliding frame and between the seat frame and the sliding frame;

the unlocking component is arranged on the mounting frame, and when the sofa bed device is converted into a bed, the unlocking component unlocks the seat frame so that the seat frame can move back.

By adopting the technical scheme, the seat frame moves and pulls the first backrest to rotate, the first backrest rotates to drive the locking plate to rotate, the locking plate rotates to push the locking rod to be separated from the locking groove, when the first backrest rotates to drive the locking plate to rotate, the locking rod is propped against the locking groove to block the locking plate and the first backrest to rotate, so that the first backrest cannot rotate, when the seat frame moves to drive the first backrest not to rotate to a horizontal state, the friction force among the seat frame, the sliding frame and the mounting frame is used for maintaining the states of the first backrest and the second backrest, the first backrest and the second backrest rotate to the horizontal state to be erected on the mounting frame for positioning, and meanwhile, the unlocking component starts unlocking the seat frame;

because the first back changes to extremely limit position and needs the unblock in order to turn round and change once more, and the extreme position of first back has two, and one is that first back changes to vertical state, and another is the horizontality, if vertical state unblock, first back will turn round under the action of gravity easily and drop, consequently this application turns to the horizontality at first back and carries out the unblock, and first back can lock under the action of gravity, when needs change the bed into sofa, only need promote the seat frame and remove and can realize, consequently need not the manual work and go unblock locking mechanical system, has improved the convenience when sofa bed uses.

Optionally, the unlocking assembly includes:

the mounting disc is arranged on the locking disc, the diameter of the mounting disc is larger than that of the locking disc, the locking rod is sleeved on the locking column in a sliding manner, and a sliding plate is arranged on the first backrest in a sliding manner along the sliding direction of the locking rod;

the two ends of the unlocking spring are respectively connected with the sliding plate and the locking rod, and the unlocking spring enables the locking rod to be pressed against the side wall of the mounting disc for positioning;

the first guide block and the second guide block are arranged on the mounting plate and are used for guiding the locking rod positioned on the locking groove to the mounting plate and guiding the locking rod positioned on the mounting plate to the locking groove respectively.

Through adopting above-mentioned technical scheme, unlocking spring makes the locking lever support to press and fix a position on the mounting plate, when first back rotated to the horizontality, the locking lever breaks away from with the locking groove under first guide block and unlocking spring effect, consequently the locking lever just supports to press on the mounting plate lateral wall, consequently the locking lever just loses the locking to the locking plate, and when first back rotates and drives the mounting plate and gyration to vertical state, the locking lever moves back to locking groove department under second guide block and locking spring effect, the locking lever just the joint supports to press to the locking groove under locking spring effect and fixes a position, thereby realize locking and unblock to locking plate and first back.

Optionally, just be located on the first back and lie in and keep away from second back one side and rotate through the spliced pole and be provided with the head of leaning on, the head of leaning on is used for supporting the head when converting to the bed, be provided with on the mounting bracket with lean on the spacing subassembly that the head is connected, spacing subassembly is being fixed a position when leaning on the head and supporting the head, simultaneously spacing subassembly makes leaning on the head and is used for blocking the dust and falls to leaning on the head when converting to the sofa on leaning on the first back, spacing subassembly includes:

the limiting block is arranged on the first backrest and is arranged on the limiting groove in a sliding mode, and when the head rest is used for supporting the head, the limiting block is propped against the limiting groove to be positioned;

the first limiting column and the second limiting column are respectively arranged on the mounting frame and the backrest, and the rotating column is positioned between the first backrest and the rotating point of the mounting frame and the first limiting column;

and the two ends of the limiting spring are hung on the first limiting column and the second limiting column and are always in a tensioning state.

Through adopting above-mentioned technical scheme, when converting into the bed and using, lean on the head rotation and make the spliced pole rotate, and lean on the head to keep away from first back rotation under spacing spring effect, make the stopper support and press and fix a position on the spacing groove, therefore lean on the head can support the head, and when converting into sofa, first back rotates and drives the spliced pole rotation, and spacing spring pulling first spacing post orientation is close to first back direction rotation, make the head support press and fix a position on first back, therefore the head is used for supporting the lateral wall of head support and pressing and block on first back, thereby realize blockking the dust, thereby reduced the probability that the head needs the clearance, travelling comfort and convenience when having improved sofa bed and using. Optionally, all can dismantle through coupling assembling between seat frame and the sliding frame, between sliding frame and the mounting bracket and be connected, first back passes through fixed subassembly with the mounting bracket and can dismantle and be connected, all can dismantle through the link assembly between second back and first back and the seat frame and be connected.

Through adopting above-mentioned technical scheme, demolish the second back earlier, then demolish first back and seat frame in proper order or simultaneously to improve the sofa bed installation and demolishd the convenience when, simple dismantlement structure realizes dismantling the installation moreover, has reduced the manufacturing cost of sofa bed.

Optionally, the connection assembly includes:

the roller rolls on the sliding frame and can be taken down from the sliding frame;

the connecting column penetrates through the roller and is rotationally connected with the roller;

the connecting screw rod is arranged on the connecting column and penetrates through the seat frame;

the connecting nut is in threaded connection with the connecting screw rod and abuts against the seat frame to be positioned.

By adopting the technical scheme, the roller rolls on the sliding frame, so that the force required by pulling the seat frame is reduced, and the convenience of the sofa bed in use is further improved; simultaneously, the connecting nut is screwed to be separated from the connecting screw, then the connecting screw is pushed to drive the connecting screw to be separated from the seat frame, then the seat frame can be taken down, then the roller is taken down, and then the installation of the seat frame can be realized through reverse operation, so that the convenience of the disassembly and the installation of the seat frame sliding frame is improved.

Optionally, the mounting bracket and the sliding frame are provided with elastic locating pieces which are detachably arranged above the rollers, the locating pieces are wavy and comprise a plurality of protruding parts and a plurality of recessed parts which are arranged at intervals, the rollers are pressed against the recessed parts to be located, and when the sofa bed device is fully opened, the rollers are positioned outside the locating pieces.

Through adopting above-mentioned technical scheme, the gyro wheel rolls on the mounting bracket, and the gyro wheel rolls the back, and the gyro wheel supports and presses and fix a position on the depressed part to reduced the probability that first back and second back take place to remove when frictional force is not enough, consequently further improved the stability when sofa bed uses, thereby improved the travelling comfort when sofa bed uses, form the extrusion after the arc surface contact of gyro wheel arc surface and spacer simultaneously, thereby reduced the gyro wheel and overcome the required strength of spacer elasticity, consequently further improved the convenience when adjusting, convenience and travelling comfort when having improved sofa bed and used.

Optionally, the fixing assembly includes:

the mounting column penetrates through the first backrest and the mounting frame, and the first backrest is rotationally connected with the mounting column;

the positioning disc is arranged on the mounting column and is abutted against the first backrest for positioning;

the elastic strip penetrates through one end, far away from the positioning disc, of the mounting column, and the two ends of the elastic strip are propped together under the action of elasticity.

Through adopting above-mentioned technical scheme, stir the one end of elastic strip and keep away from the other end, then can take off the elastic strip, then take off the erection column, can take off first back and realize dismantling afterwards, when needing the installation, with first back rest mounting bracket, then pass first back and erection column with the erection column for the positioning disk is contradicted on the first back, then passes the erection column with the elastic strip, loosens the elastic strip, makes elastic strip both ends butt pressure together, thereby realizes dismantling of first back.

Optionally, the linkage assembly includes:

the first plate body and the second plate body are respectively arranged on the second backrest and the seat frame;

the hinge column is arranged on the second plate body, is in plug-in fit with the first plate body and is rotationally connected with the first plate body.

Through adopting above-mentioned technical scheme, pulling second back drives first plate body and articulates the post and breaks away from, then can take off the second back and realize dismantling, during the installation, is close to the articulated post with first plate body for the articulated post is pegged graft and is installed on the first plate body, and the articulated post rotates with the plate body to be connected, thereby realizes that second back and first back and seat frame can be dismantled and be connected.

Optionally, the seat frame is positioned by a positioning assembly, and the positioning assembly includes:

the mounting rod and the moving rod are respectively arranged on the sliding frame and the seat frame;

the first positioning rod and the second positioning rod are respectively arranged on the mounting rod and the moving rod, and the first positioning rod is abutted against the mounting frame and the second positioning rod is abutted against the first positioning rod for positioning;

the supporting wheel is rotatably arranged on the mounting rod and the moving rod and rolls on the ground to support.

By adopting the technical scheme, the supporting wheels roll on the ground, so that the resistance generated when the seat frame is pulled is reduced, and the convenience of the sofa bed in use is improved; meanwhile, the damage to the ground caused by movement of the seat frame is reduced, the first positioning rod is abutted against the mounting frame, and the second positioning rod is abutted against the first positioning rod to position, so that the probability of movement exceeding the limit and falling short of the limit is reduced, the convenience in movement is improved, and the convenience in use of the sofa bed is improved.

In summary, the present application includes at least one of the following beneficial technical effects:

all lie in the outside through first back, second back and seat frame to improved the convenience of clearing up it, reduced the off-flavor or take place the probability of mildewing, improved the travelling comfort when sofa uses, only need the pulling or promote the seat frame simultaneously and can realize adjusting, thereby improved the convenience when sofa is practical, but also can adjust the angle of first back and second back as required, after the regulation is accomplished, locking mechanical system starts to fix a position first back and second back position, thereby improved travelling comfort and convenience when human use.

Drawings

FIG. 1 is a schematic view of the structure of a sofa state in the present application;

FIG. 2 is a schematic structural view of the bed state in the present application;

FIG. 3 is a schematic structural view of the securing assembly and spacing assembly of the present application;

FIG. 4 is an exploded view of the linkage assembly of the present application;

FIG. 5 is a schematic view of the locking mechanism of the present application;

FIG. 6 is a partial exploded view of the locking mechanism of the present application;

FIG. 7 is an enlarged schematic view of portion A of FIG. 2;

fig. 8 is a schematic structural view of the spacer in the present application.

Reference numerals: 1. an armrest; 11. a mounting frame; 12. a slide rail; 13. mounting a cross bar; 14. a carrying plate; 15. a headrest; 151. a backup plate; 152. a limit groove; 17. a support plate; 18. fixing the column; 19. a bearing cross plate; 191. a slip plate; 2. a sofa bed device; 21. a first backrest; 211. a mounting plate; 212. a connecting rod; 213. rotating the column; 22. a sliding frame; 221. a sliding cross bar; 222. a slideway; 23. a seat frame; 24. a second backrest; 25. a support rod; 26. a connecting plate; 27. a carrier bar; 3. a locking mechanism; 31. a locking plate; 311. a locking groove; 32. locking the column; 33. a locking lever; 34. a locking spring; 35. unlocking the assembly; 36. a mounting plate; 361. a mounting groove; 37. an unlocking spring; 38. a first guide block; 381. a first guide surface; 39. a second guide block; 391. a second guide surface; 4. a fixing assembly; 41. a mounting column; 42. an elastic strip; 43. positioning holes; 5. a linkage assembly; 51. a first plate body; 52. a second plate body; 53. a hinge post; 6. a positioning assembly; 61. a mounting rod; 62. a moving rod; 63. a first positioning rod; 64. a second positioning rod; 65. a support wheel; 7. a connection assembly; 71. a roller; 72. a connecting column; 73. a connecting screw; 74. a coupling nut; 8. a positioning sheet; 81. a protruding portion; 82. a recessed portion; 9. a limit component; 91. a limiting block; 92. a first limit post; 93. the second limit column; 94. and a limit spring.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-8.

The embodiment of the application discloses a push-pull sofa bed.

Referring to fig. 1, the push-pull sofa bed comprises two armrests 1, two mounting frames 11 fixedly mounted on the two armrests 1, and sofa bed devices 2 are arranged on the two mounting frames 11.

Referring to fig. 1 and 2, horizontal slide rails 12 are fixedly mounted on the side walls of opposite sides of the two mounting frames 11, horizontal mounting cross bars 13 are fixedly mounted on the side walls of opposite sides of the two mounting frames 11, the length direction of the mounting cross bars 13 is perpendicular to the length direction of the slide rails 12, meanwhile, the mounting cross bars 13 are located below the slide rails 12, and the mounting cross bars 13 are located at one ends of the two parallel slide rails 12.

Referring to fig. 1 and 2, the sofa bed device 2 includes a first backrest 21, a sliding frame 22, and a seat frame 23, the first backrest 21 is rotatably mounted on the mounting rail 13, and the axis of the rotation direction of the first backrest 21 is parallel to the length direction of the mounting rail 13, the side wall of one side of the first backrest 21 is detachably connected and rotatably connected with the mounting rail 13 through the fixing component 4, and the side wall of one side of the first backrest 21, which is far away from the mounting rail 13, is vertically upwards arranged, and when the first backrest 21 is rotated to be horizontal, the side wall of one side of the first backrest 21, which is far away from the mounting rail 13, extends to the end of the slide rail 12, which is far away from the mounting rail 13.

Referring to fig. 2 and 3, the fixing assembly 4 includes a mounting column 41, a positioning plate and an elastic strip 42, two ends of the first backrest 21, which are close to the mounting cross bar 13, are fixedly provided with horizontal connecting rods 212, the lower surface of each connecting rod 212 is fixedly provided with a vertical mounting plate 211, and the first backrest 21 is positioned above the sliding rail 12; the upper surface of the mounting cross bar 13 is fixedly provided with a vertical bearing plate 14. The mounting column 41 horizontally passes through the mounting plate 211 and the bearing plate 14, the positioning disk is coaxially and fixedly mounted on one end of the mounting column 41, the positioning disk is abutted against the side wall of the mounting plate 211 for positioning, and one end of the mounting column 41, which is far away from the positioning disk, passes out of the bearing plate 14 and is provided with a vertical positioning hole 43; one end of the elastic strip 42 passes through the positioning hole 43, and the two ends of the elastic strip 42 are propped together under the action of elasticity to be positioned, so that the elastic strip 42 is blocked from being separated from the positioning hole 43, the elastic strip 42 is used for blocking the mounting column 41 from being separated from the bearing plate 14 and the mounting plate 211, and the mounting column 41 can be removed after the elastic strip 42 is removed from the positioning hole 43, so that the first backrest 21 can be detached.

Referring to fig. 2 and 3, the side walls of the two connecting rods 212 near the side of the mounting cross bar 13 are rotatably mounted with the back plates 151 through the rotating columns 213, the side walls of the opposite sides of the two back plates 151 are fixedly mounted with the head rest 15, the rotating columns 213 are in a horizontal state and are parallel to the axes of the rotation directions of the first backrest 21, and when the bed is converted, the side walls of the head rest 15 far away from the side walls of the back plates 151 are inclined upwards and are used for supporting the head.

Referring to fig. 2 and 3, the mounting cross bar 13 is provided with a limit component 9 connected with the backup plate 151, the limit component 9 is used for positioning the backup plate 151 and the headrest 15 so as to support the head, and meanwhile, when the sofa is converted into a sofa, the limit component 9 enables the headrest 15 to be used for pressing the side wall of the head support against the first backrest 21 so as to be used for preventing dust from falling onto the side wall of the headrest 15 for supporting the head; the spacing subassembly 9 includes stopper 91, first spacing post 92, second spacing post 93 and spacing spring 94, and stopper 91 fixed mounting has seted up spacing groove 152 along the axis circumference of rotation post 213 on the backup plate 151 lateral wall on connecting rod 212 lateral wall, and stopper 91 slides and installs on spacing groove 152, and simultaneously when converting into the bed, stopper 91 supports and presses and be used for carrying out the location to leaning on first 15 on spacing groove 152.

Referring to fig. 2 and 3, the first limiting post 92 is fixedly installed on the sidewall of the back plate 151, the second limiting post 93 is fixedly installed on the sidewall of the mounting cross bar 13, and the second limiting post 93 is located below the first limiting post 92 and the carrier plate 14, meanwhile, when the head 15 is positioned by the limiting block 91, the first limiting post 92 is located above the rotating post 213, the second limiting post 93 is located on the side of the rotating post 213 away from the first limiting post 92, that is, the rotating post 213 is located between the first limiting post 92 and the second limiting post 93; the two ends of the limiting spring 94 are hooked on the first limiting column 92 and the second limiting column 93, and annular grooves which are annular and used for positioning the limiting spring 94 are formed in the first limiting column 92 and the second limiting column 93, and the limiting spring 94 is always in a tensioning state.

Referring to fig. 2 and 3, the rotation of the first backrest 21 drives the connecting rod 212 to rotate around the axis of the mounting post 41, the rotation of the connecting rod 212 drives the rotating post 213 to rotate downwards, and the limiting spring 94 pulls the first limiting post 92 to generate a pulling force and a downward pulling force horizontally approaching to the first backrest 21, so that the backrest 151 and the backrest 15 rotate towards being approaching to the first backrest 21 along with the rotation of the connecting rod 212, when the sofa is converted, the first backrest 21 is in a vertical state, and the side wall of the backrest 15 approaching to the first backrest 21, namely the side wall for supporting the head, is pressed against the first backrest 21 to be positioned, so that dust is prevented from falling onto the side wall of the backrest 15 for supporting the head; when the first backrest 21 is opened to drive the connecting rod 212 and the rotating column 213 to rotate upwards, the limit spring 94 pulls the backrest 15 to rotate downwards, so that the backrest 15 is far away from the first backrest 21 along with the rotation of the first backrest 21, and when the first backrest 21 is put flat and converted into a bed, the limit block 91 is pressed against the limit groove 152 to be positioned, so that the backrest 15 is convenient to store and open.

Referring to fig. 2 and 3, the sliding frame 22 is slidably mounted on the sliding rail 12 along the length direction of the sliding rail 12, and the sliding frame 22 is located on the side of the first backrest 21 away from the mounting cross bar 13 and between the two sliding rails 12; the sliding frame 22 comprises a sliding cross bar 221 and sliding ways 222, the length direction of the sliding cross bar 221 is parallel to the length direction of the mounting cross bar 13, one ends of the two sliding ways 222 are fixedly arranged on the side walls of the two ends of the sliding cross bar 221 and horizontally extend to one side, far away from the first backrest 21, of the sliding cross bar 221, the length direction of the sliding ways 222 and the length direction of the sliding rail 12 are parallel to each other, and meanwhile, the sliding ways 222 and the sliding rail 12 are of structures with T-shaped sections.

Referring to fig. 2 and 4, the seat frame 23 is slidably mounted on the slide rails 222 along the length direction of the slide rails 222, and the seat frame 23 is located between the two slide rails 222, the sofa bed device 2 further includes a second backrest 24, both ends of the second backrest 24 are rotatably mounted on the side walls of the opposite sides of the first backrest 21 and the seat frame 23, and the second backrest 24 is located between the first backrest 21 and the seat frame 23, while both opposite side walls of the second backrest 24 are detachably connected with the first backrest 21 and the seat frame 23 through the linkage assembly 5, the linkage assembly 5 connected with the first backrest 21 is located on the lower surfaces of the first backrest 21 and the second backrest 24, and the linkage assembly 5 connected with the seat frame 23 is located on the upper surfaces of the second backrest 24 and the seat frame 23.

Referring to fig. 2 and 4, explanation will be given below taking the linkage assembly 5 connected with the seat frame 23 as an example, the linkage assembly 5 includes a first plate 51, a second plate 52, and a hinge post 53, the first plate 51 is fixedly mounted on a side wall of the second backrest 24, the second plate 52 is fixed on a side wall of the seat frame 23, the hinge post 53 is fixedly mounted on the second plate 52, and the hinge post 53 is in plug-in fit with the first plate 51, and the hinge post 53 is rotationally connected with the first plate 51; simultaneously, the second backrest 24 is pulled to drive the first plate body 51 to move, so that the first plate body 51 is separated from the hinge post 53 to be dismounted, and in the mounting process, the hinge post 53 is inserted and mounted on the first plate body 51, so that the first plate body 51 and the second plate body 52 are rotationally connected together, and meanwhile, the first plate body 51 and the second plate body 52 are abutted together to be positioned, so that the second backrest 24 is detachably connected with the first backrest 21 and the seat frame 23, and meanwhile, the second backrest 24 is rotationally connected with the first backrest 21 and the seat frame 23.

Referring to fig. 1 and 2, the seat frame 23 is positioned by the positioning assembly 6, the positioning assembly 6 includes a mounting bar 61, a moving bar 62, a first positioning bar 63, a second positioning bar 64 and a supporting wheel 65, the mounting bar 61 is provided with two and is respectively fixedly installed on one ends of the two slide ways 222 far from the sliding cross bar 221, the moving bar 62 is fixedly installed on the lower surface of the side of the seat frame 23 far from the sliding frame 22, and the mounting bar 61 and the moving bar 62 are in a vertical state; the first positioning rod 63 is fixedly installed on the side wall of the opposite side of the two installation rods 61, the second positioning rod 64 is fixedly installed on the side wall of the opposite side of the two moving rods 62, the supporting wheel 65 is provided with four and rotatably installed on the bottom ends of the two installation rods 61 and the two moving rods 62, and the supporting wheel 65 rolls on the ground to support; the two sliding rails 12 are fixedly provided with a horizontal bearing rod 27 at one end far away from the mounting rod 61, when the sliding rails are converted into a sofa state and the seat frame 23 is in a fully retracted state, the first positioning rod 63 is abutted against the bearing rod 27 for positioning, and the second positioning rod 64 is abutted against the first positioning rod 63 for positioning.

Referring to fig. 2 and 5, the sofa bed device 2 further comprises a locking mechanism 3, wherein the locking mechanism 3 is arranged on the mounting cross bar 13 and is used for locking the first backrest 21, when the seat frame 23 is pulled to move to realize the process of changing from a sofa to a bed state, the seat frame 23 faces away from the mounting cross bar 13, the locking mechanism 3 enables the seat frame 23 not to move back, and simultaneously, when the sofa is completely changed to the bed state, the locking mechanism 3 unlocks the first backrest 21 to move back, so that the seat frame 23 can move back freely.

Referring to fig. 2 and 5, there is a certain friction resistance between the sliding frame 22 and the slide rail 12, and between the seat frame 23 and the sliding frame 22, so that during the process of turning the sofa into a bed, the seat frame 23 moves to pull the sliding frame 22 and the seat frame 23, the friction resistance is used for positioning the sliding seat and the seat frame 23, so that when the sofa is not completely turned into the bed, the friction resistance is used for positioning the first backrest 21, the second backrest 24 and the seat frame 23; the seat frame 23 moves to pull the second backrest 24 and the first backrest 21 to move and rotate simultaneously, so that after the seat frame 23 slides to the limit position on the sliding frame 22, the seat frame 23 moves to pull the sliding frame 22 to move, and when the sliding frame 22 moves to the limit position on the sliding rail 12, the sofa is converted into a bed, then the angle of the backrest 15 can be adjusted to support the head, the seat frame 23 can be moved back to realize the conversion of the bed into the sofa, and after the seat frame 23 stops moving in the conversion process, the friction resistance is used for positioning the position, and the locking mechanism 3 blocks the first backrest 21 from rotating, so that the seat frame 23 is blocked from being moved back, thereby realizing the adjustment of a plurality of angles, and further improving the convenience and the comfort in the sofa use process.

Referring to fig. 2 and 5, the locking mechanism 3 includes a locking disc 31, a locking post 32, a locking lever 33, a locking spring 34 and an unlocking assembly 35, a support bar 25 horizontally extending to the mounting cross bar 13 is fixedly installed on the side wall of the first backrest 21, a support plate 17 is fixedly installed on the upper surface of the mounting cross bar 13, a fixing post 18 is fixedly installed on the support plate 17, and the axis of the fixing post 18 coincides with the axis of the rotation direction of the first backrest 21; the locking disc 31 is fixedly arranged at one end of the supporting rod 25, which is close to the supporting plate 17, two locking discs 31 are arranged at intervals and are abutted against two opposite side walls of the supporting plate 17, meanwhile, the locking disc 31 is rotatably arranged on the fixed column 18, the axes of the locking disc 31 and the fixed column 18 are coincident, the outer diameter of the supporting plate 17 is larger than that of the locking disc 31, a plurality of locking grooves 311 are formed in the part of the outer side wall of the locking disc 31 in a circumferential array mode around the axis of the fixed column 18, and the array arrangement angle of the locking grooves 311 is 90 degrees.

Referring to fig. 2, 5 and 6, the locking post 32 is fixedly installed on the side wall of the support plate 17 with the axis of the locking post 32 and the axis of the fixing post 18 being parallel, while the locking post 32 is located outside the locking plate 31; the locking rod 33 is rotatably sleeved on the locking column 32, and the locking rod 33 can slide along the axis of the locking column 32; a bearing transverse plate 19 is fixedly arranged on the side wall of the supporting plate 17 and positioned on one side of the locking rod 33 far away from the locking disc 31, a sliding plate 191 is slidingly arranged on the side wall of the bearing transverse plate 19 on one side of the locking rod 33, and the sliding direction of the sliding plate 191 is parallel to the sliding direction of the locking rod 33; the two ends of the locking spring 34 are respectively and fixedly arranged on the side walls of the sliding plate 191 and the opposite side of the locking rod 33, meanwhile, the locking rod 33 is propped against and clamped on the locking groove 311 under the action of the locking spring 34, and the locking rod 33 is propped against the locking groove 311 to block the rotation of the first backrest 21 when the locking rod 31 is driven to rotate when the locking plate 31 is pushed to separate from the locking groove 311 by the rotation of the locking plate 31 when the first backrest 21 moves back and the locking rod 33 is propped against the locking groove 311 to block the rotation of the first backrest 21 when the sofa is converted into a bed by the movement of the seat frame 23.

Referring to fig. 5 and 6, an unlocking assembly 35 is provided on the support plate 17, and when the sofa bed device 2 is completely converted into a bed, the unlocking assembly 35 unlocks the seat frame 23 so that the seat frame 23 can freely move back; the unlocking assembly 35 comprises a mounting disc 36, an unlocking spring 37, a first guide block 38 and a second guide block 39, wherein the mounting disc 36 is coaxially and fixedly arranged on one end of the locking disc 31, which is away from the supporting plate 17, and the outer diameter of the mounting disc 36 is larger than that of the locking disc 31; the two ends of the unlocking spring 37 are fixedly connected with the side walls of the opposite sides of the supporting plate 17 and the locking rod 33 respectively, and the locking rod 33 is pressed against the side walls of the mounting plate 36 under the action of the unlocking spring 37 to be positioned.

Referring to fig. 5 and 6, a mounting groove 361 is formed in the outer side wall of the mounting plate 36, the mounting groove 361 penetrates through the side wall of the side, close to the locking plate 31, of the mounting plate 36, and the groove bottom of the mounting groove 361 is located on the inner side, close to the axis of the locking plate 31, of the locking plate 31; the first guide block 38 is fixedly installed in the installation groove 361, the second guide block 39 is fixedly installed on the outer side wall of the installation plate 36, the first guide block 38 and the second guide block 39 are correspondingly arranged with the first locking groove 311 and the last locking groove 311 of the plurality of locking grooves 311, the outer side wall of the first guide block 38 is flush with the outer side wall of the installation plate 36, the first guide surface 381 is formed on the side wall of the first guide block 38 close to the side of the locking plate 31, and the first guide surface 381 is used for guiding the locking rod 33 located on the locking groove 311, so that the locking rod 33 moves onto the outer side wall of the installation plate 36 under the action of the locking spring 34 and the first guide surface 381.

Referring to fig. 2, 5 and 6, a second guide surface 391 is formed on the second guide block 39, and the second guide surface 391 is used for guiding the locking lever 33 located on the outer side wall of the mounting plate 36 to move back onto the locking groove 311; when the conversion to the bed, i.e., the first backrest 21, is completed to be turned to the horizontal state, the locking lever 33 is located on the locking groove 311 corresponding to the first guide block 38, and the locking lever 33 is moved to the outer side wall of the mounting plate 36 under the action of the locking spring 34 and the first guide surface 381, so that the locking plate 31 and the first backrest 21 can be freely turned, and when the first backrest 21 is turned to the vertical state, the locking lever 33 is clamped and pressed against the locking groove 311 under the action of the second guide surface 391 and the locking spring 34, thereby achieving the locking and unlocking of the first backrest 21 and the seat frame 23.

Referring to fig. 2 and 7, the seat frame 23 and the slide rail 222, and the slide rail 222 and the slide rail 12 are detachably connected through the connecting component 7; taking the connecting assembly 7 on the seat frame 23 and the slide ways 222 as an example for explanation, the connecting assembly 7 is provided with two connecting assemblies and is arranged in one-to-one correspondence with the two slide ways 222, the connecting assembly 7 comprises rollers 71, connecting columns 72, connecting screws 73 and connecting nuts 74, a vertical downward connecting plate 26 is fixedly arranged on the lower surface of one side of the seat frame 23, which is close to the second backrest 24, so that the seat frame 23 is positioned above the slide ways 222, and when the seat frame 23 is converted into a bed, the upper surfaces of the seat frame 23, the first backrest 21 and the second backrest 24 are flush, and the first backrest 21 and the second backrest 24 are arranged on the upper surface of the sliding frame 22 in a erecting mode for positioning; the roller 71 rolls on the slideway 222, the connecting column 72 horizontally passes through the roller 71 and is abutted against the roller 71 for positioning, meanwhile, the roller 71 is rotationally connected with the connecting column 72, the connecting screw 73 is coaxially and fixedly arranged on the connecting column 72, and the connecting screw 73 passes through the connecting plate 26 and is rotationally connected with the connecting plate 26; the coupling nut 74 is threadedly coupled to the coupling screw 73, and the coupling nut 74 is positioned against the coupling plate 26.

Referring to fig. 2 and 7, the connecting screw 73 is screwed to be separated from the connecting screw 73, then the connecting screw 73 is pushed to be separated from the connecting plate 26, then the seat frame 23 can be removed to be detached, then the roller 71 can be removed from the slide rail 12 or the slide rail 222, and when the installation is needed, the connecting screw 73 is pushed to pass through the connecting plate 26, and then the connecting screw 74 is screwed to be connected to the connecting screw 73, so that the connecting screw 74 is abutted against the connecting plate 26 to realize the installation.

Referring to fig. 2 and 8, positioning pieces 8 are inserted and installed on the inner side walls of the slide rail 12 and the slide rail 222, the positioning pieces 8 can be detached from one end of the slide rail 12 far away from the slide rail 222 and one end of the slide rail 222 near the slide rail 12, meanwhile, the length direction of the positioning pieces 8 is parallel to the length direction of the slide rail 12, and the positioning pieces 8 are positioned above the rollers 71 and have elasticity; the positioning sheet 8 is wavy, and the positioning sheet 8 comprises a plurality of protruding parts 81 and a plurality of recessed parts 82 which are arranged at intervals, the roller 71 can move after extruding the protruding parts 81 in the moving process of the roller 71, and after the moving is finished, the roller 71 is propped against the recessed parts 82 to position, so that the probability of moving the seat frame 23, the first backrest 21 and the second backrest 24 when the friction resistance is insufficient is reduced; meanwhile, when the roller 71 moves to the end of the slide rail 12 close to the slide rail 222 or the end of the slide rail 222 far away from the slide rail 12, the roller 71 is separated from the positioning sheet 8, so that the positioning sheet 8 can be conveniently taken down to replace or take down the roller 71.

The working principle of the embodiment of the application is as follows:

the seat frame 23 is pulled to move, the seat frame 23 moves to drive the first backrest 21 and the second backrest 24 to move and rotate simultaneously, the seat frame 23 moves to drive the idler wheel 71 to squeeze the positioning sheet 8 to move, the seat frame 23 stops moving, the idler wheel 71 is propped against the concave part 82 to position, so that the seat frame 23, the first backrest 21 and the second backrest 24 are positioned, the locking rod 33 is propped against the locking groove 311 to block back movement, the angle of a sofa can be adjusted according to needs, the seat frame 23 is pulled to move continuously, the first backrest 21 and the second backrest 24 are arranged on the sliding frame 22 to position, the sofa is converted into a bed, then the angle of the backrest 15 is adjusted to support the head, and the locking rod 33 moves to the mounting disc 36 under the action of the unlocking spring 37 and the first guide surface 381 to unlock the back movement of the seat frame 23.

When the sofa needs to be converted into a sofa, the seat frame 23 is pushed to move, the first positioning rod 63 is abutted against the bearing rod 27, the second positioning rod 64 is abutted against the first positioning rod 63 to be positioned, and meanwhile, the locking rod 33 is abutted against the locking groove 311 under the action of the second guide surface 391 and the locking spring 34 to be used for positioning the seat frame 23, so that the conversion of two states of the sofa and the sofa bed is realized, the angle of the sofa can be adjusted according to the requirement, and the convenience and the comfort of the sofa bed in use are improved.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. The utility model provides a push-and-pull sofa bed, includes handrail (1), sets up mounting bracket (11) on handrail (1), its characterized in that: the sofa bed device (2) is arranged on the mounting frame (11), and the sofa bed device (2) comprises:

a first backrest (21), the first backrest (21) being rotatably arranged on the mounting frame (11);

the sliding frame (22) is arranged on the mounting frame (11) in a sliding manner;

the seat frame (23), the seat frame (23) slides and sets up on the sliding frame (22) along the sliding direction of the sliding frame (22), the sliding frame (22) and seat frame (23) are all supported on ground;

a second backrest (24), wherein the second backrest (24) is rotatably arranged on the first backrest (21) and the seat frame (23) and is positioned between the first backrest (21) and the seat frame (23);

a locking mechanism (3), wherein the locking mechanism (3) is arranged on the mounting frame (11) and is used for positioning the first backrest (21);

the locking mechanism (3) comprises:

the locking disc (31) is arranged on the first backrest (21) and is rotationally connected with the mounting frame (11), and a plurality of locking grooves (311) are formed in the partial side wall of the locking disc (31) around the axis array of the rotating direction of the locking disc (31);

a locking column (32), wherein the locking column (32) is arranged on the mounting frame (11) and the axis is parallel to the axis of the rotation direction of the locking disc (31);

a locking lever (33), the locking lever (33) being rotatably mounted on the locking post (32);

the locking spring (34), both ends of the locking spring (34) are connected with the mounting frame (11) and the locking rod (33) respectively, when the seat frame (23) is pulled to move and is converted into a bed, the locking rod (33) is clamped and installed on the locking groove (311) under the action of the locking spring (34) to block the seat frame (23) from moving back, and friction resistance for blocking the seat frame (23) and the sliding frame (22) from moving is formed between the mounting frame (11) and the sliding frame (22) and between the seat frame (23) and the sliding frame (22);

the unlocking component (35), the unlocking component (35) is arranged on the mounting frame (11), and when the sofa bed device (2) is converted into a bed, the unlocking component (35) unlocks the seat frame (23) so that the seat frame (23) can move back;

the unlocking assembly (35) comprises:

the mounting plate (36), the mounting plate (36) is arranged on the locking plate (31) and has a diameter larger than that of the locking plate (31), the locking rod (33) is rotatably sleeved on the locking column (32) and can slide along the axis of the locking column (32), and the sliding plate (191) is arranged on the first backrest (21) in a sliding direction of the locking rod (33);

the unlocking spring (37), two ends of the unlocking spring (37) are respectively connected with the mounting frame (11) and the locking rod (33), and the unlocking spring (37) enables the locking rod (33) to be pressed against the side wall of the mounting disc (36) for positioning;

a first guide block (38) and a second guide block (39), both the first guide block (38) and the second guide block (39) being arranged on the mounting plate (36) and being used for guiding the locking bar (33) located on the locking groove (311) to the mounting plate (36) and the locking bar (33) located on the mounting plate (36) to the locking groove (311), respectively.

2. A push-pull sofa bed according to claim 1, characterized in that: the utility model provides a back is provided with through rotation post (213) rotation on first back (21) and lie in and keep away from second back (24) one side and lean on first (15), lean on first (15) and be used for supporting the head when converting into the bed, be provided with spacing subassembly (9) that are connected with leaning on first (15) on mounting bracket (11), spacing subassembly (9) are supporting the head when leaning on first (15) and are fixed a position, simultaneously spacing subassembly (9) make leaning on first (21) and lean on when converting into the sofa and be used for blockking the dust and fall on leaning on first (15), spacing subassembly (9) include:

the limiting block (91) is provided with a limiting groove (152) on the backrest (15), the limiting block (91) is arranged on the first backrest (21) and is arranged on the limiting groove (152) in a sliding mode, and when the backrest (15) is used for supporting the head, the limiting block (91) is propped against the limiting groove (152) to be positioned;

the first limiting column (92) and the second limiting column (93), the first limiting column (92) and the second limiting column (93) are respectively arranged on the mounting frame (11) and the leaning head (15), and the rotating column (213) is positioned between the first backrest (21) and the rotating point of the mounting frame (11) and the first limiting column (92);

and the two ends of the limiting spring (94) are hung on the first limiting column (92) and the second limiting column (93) and are always in a tensioning state.

3. A push-pull sofa bed according to claim 1, characterized in that: the seat frame is characterized in that the seat frame (23) is detachably connected with the sliding frame (22) and the sliding frame (22) is detachably connected with the mounting frame (11) through the connecting assembly (7), the first backrest (21) is detachably connected with the mounting frame (11) through the fixing assembly (4), and the second backrest (24) is detachably connected with the first backrest (21) and the seat frame (23) through the linkage assembly (5).

4. A push-pull sofa sleeper according to claim 3, characterized in that: the connection assembly (7) comprises:

a roller (71), wherein the roller (71) rolls on the sliding frame (22) and can be removed from the sliding frame (22);

the connecting column (72) penetrates through the roller (71) and is rotationally connected with the roller (71);

a connecting screw (73), wherein the connecting screw (73) is arranged on the connecting column (72) and penetrates through the seat frame (23);

and the connecting nut (74) is in threaded connection with the connecting screw (73) and abuts against the seat frame (23) for positioning.

5. A push-pull sofa bed according to claim 4, characterized in that: elastic locating plates (8) are detachably arranged on the mounting frame (11) and the sliding frame (22) and are located above the rollers (71), the locating plates (8) are wavy and comprise a plurality of protruding portions (81) and a plurality of recessed portions (82) which are arranged at intervals, the rollers (71) are pressed against the recessed portions (82) to be located, and when the sofa bed device (2) is fully opened, the rollers (71) are located outside the locating plates (8).

6. A push-pull sofa bed according to claim 4, characterized in that: the fixing assembly (4) comprises:

the mounting column (41) penetrates through the first backrest (21) and the mounting frame (11), and the first backrest (21) is rotationally connected with the mounting column (41);

the positioning disc is arranged on the mounting column (41) and is abutted against the first backrest (21) to position;

and the elastic strip (42) penetrates through one end of the mounting column (41) far away from the positioning disc, and the two ends of the elastic strip (42) are pressed together under the action of elasticity.

7. A push-pull sofa bed according to claim 4, characterized in that: the linkage assembly (5) comprises:

the first plate body (51) and the second plate body (52), wherein the first plate body (51) and the second plate body (52) are respectively arranged on the second backrest (24) and the seat frame (23);

the hinge post (53) is arranged on the second plate body (52), is in plug-in fit with the first plate body (51) and is in rotary connection with the first plate body (51).

8. A push-pull sofa bed according to claim 1, characterized in that: the seat frame (23) is positioned through a positioning assembly (6), and the positioning assembly (6) comprises:

a mounting rod (61) and a moving rod (62), wherein the mounting rod (61) and the moving rod (62) are respectively arranged on the sliding frame (22) and the seat frame (23);

a first positioning rod (63) and a second positioning rod (64), wherein the first positioning rod (63) and the second positioning rod (64) are respectively arranged on the mounting rod (61) and the moving rod (62), the first positioning rod (63) is abutted on the mounting frame (11) and the second positioning rod (64) is abutted on the first positioning rod (63) for positioning;

and a support wheel (65), wherein the support wheel (65) is rotatably arranged on the mounting rod (61) and the moving rod (62) and rolls on the ground to support.