A sofa bed for achieving rapid conversion

Abstract

The present invention discloses a sofa bed capable of realizing rapid conversion, which relates to the technical field of furniture. It includes a seat frame, a backrest frame is hinged to the right side of the seat frame, a large bevel gear is rotatably connected to the right side inside the seat frame, a small runner is bolted to the surface of the large bevel gear, the teeth on the right side surface of the large bevel gear mesh with a small bevel gear, a worm is bolted to the axial center on the right side of the small bevel gear, the right end of the worm meshes with a worm wheel, and the worm wheel is bolted to the backrest frame. A large gear disc is rotatably connected to the left side inside the seat frame, a driving sprocket is bolted to the surface of the large gear disc, the teeth on the top of the large gear disc mesh with a rotating gear, and a seat plate frame is bolted to the rear side of the rotating gear. Through the structure, the backrest frame can be driven to rotate, and the backrest frame can be rotated to the right or left with one operation, avoiding the trouble of rotating after releasing the clamping. Through the structure, the seat plate frame can be driven to rotate, and the area of the sofa bed can be expanded by using the rotated seat plate frame.

Description

Technical Field

[0001] The present invention relates to the technical field of furniture, and in particular to a sofa bed capable of rapid conversion. Background Art

[0002] A patent with the application number 202022804412.4 discloses a sofa bed capable of rapid conversion, which includes a sofa bed main body and a sofa bed backboard. A load-bearing beam is provided at the seating end of the sofa bed main body, and a track is provided on the load-bearing beam. A folding hinge is provided at the installation end of the sofa bed backboard, and the other end of the folding hinge is fixedly installed with a slide rail by screws and is slidably installed with the track through the slide rail; a support point is provided at the end of the load-bearing beam corresponding to the slide rail, and a support column is provided at the bottom of the movable end of the sofa bed backboard. This sofa bed capable of rapid conversion has the advantages of being able to rapidly convert the sofa bed between the sofa state and the sofa bed state, improving the bearing capacity when the sofa bed is in use, and extending the service life of the sofa bed.

[0003] However, this sofa bed capable of rapid conversion also has some problems. For example, if its backboard is to be rotated downward to be converted into a bed, it is necessary to first release the clamping and limiting relationship between the backboard and the sofa bed main body, and then the backboard can be moved, which is very troublesome. Moreover, the backboard is relatively heavy, making it difficult for users to move it. In addition, the expanded area is still small and cannot further increase the area of the sofa bed. Summary of the Invention

[0004] The purpose of the present application is to provide a sofa bed capable of rapid conversion to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present application provides the following technical solution: A sofa bed capable of rapid conversion includes a seat frame. A backrest frame is hinged to the right side of the seat frame. A large bevel gear is rotatably connected to the right side inside the seat frame. A small runner is bolted to the surface of the large bevel gear. The teeth on the right side of the surface of the large bevel gear mesh with a small bevel gear. A worm is bolted to the axis on the right side of the small bevel gear. The right end of the worm meshes with a worm wheel, and the worm wheel is bolted to the backrest frame. A large gear disc is rotatably connected to the left side inside the seat frame. A driving sprocket is bolted to the surface of the large gear disc. The teeth on the top of the large gear disc mesh with a rotating gear. A seat plate frame is bolted to the rear of the rotating gear. Armrest frames are bolted to the front and rear of the top of the seat plate frame. The inside of the small runner is drivingly connected with a power mechanism. The teeth of the power mechanism mesh with a transmission mechanism, and the transmission mechanism meshes with the driving sprocket.

[0006] With the above structure, the power mechanism can drive the large bevel gear to rotate through the small rotating wheel, the large bevel gear can drive the worm to rotate through the small bevel gear, and the worm can drive the backrest bracket to rotate through the worm gear; the power mechanism can drive the driving sprocket to rotate through the transmission mechanism, the driving sprocket can drive the rotating gear to rotate through the large toothed disc, and the rotating gear can drive the seat plate bracket and the armrest bracket to rotate; the backrest bracket can be driven to rotate through the structure, and the backrest bracket can be rotated to the right or left with one operation, avoiding the trouble of rotating after releasing the clamping connection. The seat plate bracket can be driven to rotate through the structure, and the area of the sofa bed can be expanded by using the rotated seat plate bracket.

[0007] Preferably, the power mechanism includes a telescopic cylinder, a sliding frame, a sliding sleeve and a rack. The rear side of the telescopic cylinder is bolted to the inside of the seat frame. The convex block at the output end of the telescopic cylinder is slidably connected to the sliding hole at the bottom rear end of the sliding frame. The bottom end of the sliding frame is in contact with the bottom end inside the seat frame. The top end of the sliding frame is slidably connected to the inside of the sliding sleeve. The rear side of the sliding sleeve is hinged to the surface of the rack. The power mechanism further includes a power component meshing with the rack, and the rack meshes with the transmission mechanism.

[0008] Further, the telescopic cylinder is electrically driven or hydraulically driven. When the power supply or the hydraulic power equipment is turned on, during the extension process of the telescopic cylinder, its convex block slides in the sliding hole of the sliding frame and drives the sliding frame to rotate. The sliding frame is rotatably arranged with the seat frame through a bearing, reducing the resistance of the sliding frame to rotate and ensuring the stable rotation of the sliding frame. During the rotation of the sliding frame, the sliding sleeve slides on the surface of the sliding frame and drives the sliding sleeve to move, and the sliding sleeve can drive the rack to move.

[0009] Preferably, the power component includes a small gear, a large rotating wheel and a transmission belt. The teeth of the small gear mesh with the teeth at the right bottom of the rack. The rear side of the small gear is bolted to the surface of the large rotating wheel. The axis of the large rotating wheel is rotatably connected to the inside of the seat frame. The inside of the large rotating wheel is drivingly connected to the left side inside the transmission belt. The right side inside the transmission belt is drivingly connected to the inside of the small rotating wheel.

[0010] Further, the rack can drive the small gear to rotate, the small gear can drive the large rotating wheel to rotate. The large rotating wheel is rotatably arranged with the seat frame through a bearing, reducing the resistance of the large rotating wheel to rotate and ensuring the stability of the rotation of the large rotating wheel. The large rotating wheel can drive the transmission belt to rotate, and the transmission belt can drive the small rotating wheel to rotate.

[0011] Preferably, a limiting frame is slidably connected to the rear side of the rack. The rear side of the limiting frame is bolted to the inside of the seat frame. A moving block is bolted to the output end of the telescopic cylinder. The convex block of the moving block is slidably connected to the sliding hole of the sliding frame.

[0012] Further, the rack is slidably arranged with the limiting frame through a slide rail to guide the rack, enabling the rack to move smoothly left and right. The rear side of the moving block is slidably arranged with the inside of the seat frame through a slide rail, enabling the moving block to move smoothly left and right.

[0013] Preferably, the transmission mechanism includes a transmission gear, a sliding ring frame and a transmission rod. The teeth of the transmission gear mesh with the teeth at the bottom of the rack. The axis of the transmission gear is rotatably connected to the inside of the seat frame. The convex block on the left side of the surface of the transmission gear is slidably connected to the sliding hole on the right side of the sliding ring frame. The left end of the sliding ring frame is hinged to the right end of the transmission rod. The transmission mechanism further includes a transmission component hinged to the transmission rod.

[0014] Furthermore, the rack can drive the transmission gear to rotate. The transmission gear is rotatably arranged on the seat frame through a bearing to ensure the stability of the rotation of the transmission gear. During the rotation of the transmission gear, its convex block can slide in the sliding hole of the sliding ring frame and drive the sliding ring frame to move, and the sliding ring frame can drive the transmission rod to move.

[0015] Preferably, the transmission component includes a rotating frame, transmission bars and a chain. The middle end of the rotating frame is hinged to the inside of the seat frame. The surface of the rotating frame is hinged to the left end of the transmission rod. The number of the transmission bars is two. The sliding holes at the top and bottom of the rotating frame are respectively slidably connected to the convex blocks of the two transmission bars. The rear side of the transmission bar is slidably connected to the inside of the seat frame. The two ends of the chain are respectively bolted to the left ends of the two transmission bars. The inside of the chain meshes with the teeth of the driving sprocket.

[0016] Furthermore, the sliding hole of the rotating frame slides on the convex block of the transmission bar and drives the top transmission bar to move to the right, which can drive the bottom transmission bar to move to the left. The top transmission bar can drive the top end on the right side of the chain to move to the right. The chain is driven by the two transmission bars to rotate, and the chain can drive the driving sprocket to rotate.

[0017] Preferably, a guiding sprocket is meshed with the bottom end inside the chain. The axis of the guiding sprocket is rotatably connected to the left side of the bottom end inside the seat frame. The chain is in a U-shaped structure.

[0018] Furthermore, the guiding sprocket can guide the chain so that the chain can be connected to the driving sprocket. The guiding sprocket is rotatably arranged on the seat frame through a bearing so that the guiding sprocket can rotate smoothly.

[0019] Preferably, a stabilizing frame is slidably connected to the rear side of the sliding ring frame. The rear side of the stabilizing frame is bolted to the inside of the seat frame. The sliding ring frame is in a T-shaped structure.

[0020] Furthermore, the sliding ring frame is slidably arranged on the stabilizing frame through a slide rail to guide the sliding ring frame so that the sliding ring frame can move smoothly left and right, which is convenient for it to be connected to the transmission gear.

[0021] Preferably, the sliding ring frame includes a sliding ring and a connecting strip integrally processed on the left side of the sliding ring. The rear side of the connecting strip is slidably connected to the inside of the stabilizing frame. The left end of the connecting strip is hinged to the right end of the transmission rod.

[0022] Furthermore, during the rotation of the transmission gear, its convex block can move inside the sliding ring and drive the sliding ring to move left and right. The sliding ring can drive the connecting bar, and the connecting bar is slidably arranged with the stable frame through the slide rail to guide the connecting bar and enable the connecting bar to move smoothly left and right.

[0023] Preferably, a support rod is hinged to the groove on the right side of the backrest frame, legs are bolted to the four corners of the bottom of the seat frame, the middle part of the surface of the worm is rotatably sleeved with the hole on the right side of the seat frame, and the left end of the seat plate frame is hinged to the top of the left side of the seat frame.

[0024] Furthermore, the support rod is used to support the backrest frame to avoid the backrest frame being in a suspended state and enhance stability. The legs support the sofa bed, and the armrest frame can support the seat plate frame. The worm is rotatably arranged with the seat frame through a bearing to enable the worm to rotate smoothly.

[0025] In summary, the technical effects and advantages of the present invention are as follows:

[0026] 1. The power mechanism can drive the large conical gear to rotate through the small runner, the large conical gear can drive the worm to rotate through the small conical gear, and the worm can drive the backrest frame to rotate through the worm gear;

[0027] 2. The power mechanism can drive the driving sprocket to rotate through the transmission mechanism, the driving sprocket can drive the rotating gear to rotate through the large toothed disc, and the rotating gear can drive the seat plate frame and the armrest frame to rotate;

[0028] The structure can drive the backrest frame to rotate, and with one operation, the backrest frame can be rotated to the right or left, avoiding the trouble of rotating after releasing the clamping. The structure can drive the seat plate frame to rotate, and the rotated seat plate frame can be used to expand the area of the sofa bed. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a front view structural schematic diagram of an embodiment of the present application;

[0030] Figure 2 is an internal structural schematic diagram of the seat frame of an embodiment of the present application;

[0031] Figure 3 is a structural schematic diagram of the power mechanism of an embodiment of the present application;

[0032] Figure 4 is a rear view structural schematic diagram of an embodiment of the present application;

[0033] Figure 5 is a structural schematic diagram of the transmission mechanism of an embodiment of the present application;

[0034] Figure 6 is a three-dimensional schematic diagram of the worm gear of an embodiment of the present application;

[0035] Figure 7 Schematic three-dimensional view of the chain for the embodiment of the present application;

[0036] Figure 8 Schematic three-dimensional view of the carriage for the embodiment of the present application.

[0037] In the figure: 1, seat frame; 2, power mechanism; 21, telescopic cylinder; 22, carriage; 23, sliding sleeve; 24, rack; 25, pinion; 26, large runner; 27, transmission belt; 3, transmission mechanism; 31, transmission gear; 32, sliding ring frame; 33, transmission rod; 34, rotating frame; 35, transmission strip; 36, chain; 37, guiding sprocket; 4, backrest frame; 5, small runner; 6, large bevel gear; 7, small bevel gear; 8, worm; 9, worm gear; 10, driving sprocket; 11, large gear disc; 12, rotating gear; 13, seat plate frame; 14, armrest frame. Detailed implementation manners

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] Embodiment

[0040] Refer to Figure 1-8 In this embodiment, a sofa bed capable of realizing rapid conversion is proposed, including a seat frame 1. A backrest frame 4 is hinged to the right side of the seat frame 1. A large bevel gear 6 is rotatably connected to the right side inside the seat frame 1. A small runner 5 is bolted to the surface of the large bevel gear 6. The teeth on the right side surface of the large bevel gear 6 mesh with a small bevel gear 7. A worm 8 is bolted to the axial center on the right side of the small bevel gear 7. The right end of the worm 8 extends to the right side of the seat frame 1 and meshes with a worm gear 9. The axial center of the worm gear 9 is bolted to the bottom end of the surface of the backrest frame 4. A large gear disc 11 is rotatably connected to the left side inside the seat frame 1. A driving sprocket 10 is bolted to the surface of the large gear disc 11. The teeth on the top of the large gear disc 11 penetrate through the opening on the top of the seat frame 1 and mesh with a rotating gear 12. A seat plate frame 13 is bolted to the rear side of the rotating gear 12. Armrest frames 14 are bolted to the front side and the rear side of the top of the seat plate frame 13. The inside of the small runner 5 is drivingly connected to a power mechanism 2. The teeth of the power mechanism 2 mesh with a transmission mechanism 3. The transmission mechanism 3 meshes with the driving sprocket 10.

[0041] With the above mechanism, when the sofa needs to be converted into a sofa bed, the power mechanism 2 can drive the small runner 5 to rotate. The small runner 5 can drive the large bevel gear 6 to rotate. The large bevel gear 6 is rotationally arranged with the seat frame 1 through a bearing to ensure the smooth rotation of the large bevel gear 6. The large bevel gear 6 can drive the small bevel gear 7 to rotate. The small bevel gear 7 can drive the worm 8 to rotate. The worm 8 can drive the worm gear 9 to rotate. The worm gear 9 can drive the backrest frame 4 to rotate. During the rotation process, the strut on the right side of the backrest frame 4 can be opened until the backrest frame 4 is in a horizontal state. The power mechanism 2 can drive the transmission mechanism 3 to rotate. The transmission mechanism 3 can drive the driving sprocket 10 to rotate. The driving sprocket 10 can drive the large gear disc 11 to rotate. The large gear disc 11 is rotationally arranged with the seat frame 1 through a bearing to ensure the smooth rotation of the large gear disc 11. The large gear disc 11 can drive the rotating gear 12 to rotate. The rotating gear 12 can drive the seat plate frame 13 to rotate, making the seat plate frame 13 rotate 180 degrees until the armrest frame 14 of the seat plate frame 13 supports the seat plate frame 13. The power mechanism 2 can drive the large bevel gear 6 to rotate through the small runner 5. The large bevel gear 6 can drive the worm 8 to rotate through the small bevel gear 7. The worm 8 can drive the backrest frame 4 to rotate through the worm gear 9. The power mechanism 2 can drive the driving sprocket 10 to rotate through the transmission mechanism 3. The driving sprocket 10 can drive the rotating gear 12 to rotate through the large gear disc 11. The rotating gear 12 can drive the seat plate frame 13 and the armrest frame 14 to rotate. The structure can drive the backrest frame 4 to rotate, and with one operation, the backrest frame 4 can be rotated to the right or left, avoiding the trouble of rotating after releasing the clamping connection. The structure can drive the seat plate frame 13 to rotate, and the rotated seat plate frame 13 can be used to expand the area of the sofa bed.

[0042] As a preferred implementation manner of this embodiment, the power mechanism 2 includes a telescopic cylinder 21, a sliding frame 22, a sliding sleeve 23, and a rack 24. The rear side of the telescopic cylinder 21 is bolted to the inside of the seat frame 1. The convex block at the output end of the telescopic cylinder 21 is slidably connected to the sliding hole at the bottom rear side of the sliding frame 22. The bottom end of the sliding frame 22 is on the bottom end inside the seat frame 1. The top end on the surface of the sliding frame 22 is slidably connected to the inside of the sliding sleeve 23. The rear side of the sliding sleeve 23 is hinged to the surface of the rack 24. The power mechanism 2 further includes a power assembly meshing with the rack 24, and the rack 24 meshes with the transmission mechanism 3.

[0043] The telescopic cylinder 21 is electrically driven or hydraulically driven. When the power supply or the hydraulic power device is turned on, during the extension process of the telescopic cylinder 21, its convex block slides in the sliding hole of the sliding frame 22 and drives the sliding frame 22 to rotate. The sliding frame 22 is rotationally arranged with the seat frame 1 through a bearing to reduce the resistance of the sliding frame 22 during rotation and ensure the smooth rotation of the sliding frame 22. During the rotation process of the sliding frame 22, the sliding sleeve 23 slides on the surface of the sliding frame 22 and drives the sliding sleeve 23 to move. The sliding sleeve 23 can drive the rack 24 to move. The lever-like structure of the sliding frame 22 can be used to increase the amplitude of the extension of the telescopic cylinder 21, enabling the rack 24 to move significantly left and right.

[0044] In this embodiment, the power assembly includes a pinion gear 25, a large runner 26, and a transmission belt 27. The teeth of the pinion gear 25 mesh with the teeth at the right bottom of the rack 24. The rear side of the pinion gear 25 is bolted to the surface of the large runner 26. The axis of the large runner 26 is rotatably connected to the inside of the seat frame 1. The inside of the large runner 26 is drivingly connected to the left side inside the transmission belt 27. The right side inside the transmission belt 27 is drivingly connected to the inside of the small runner 5.

[0045] The rack 24 can drive the pinion gear 25 to rotate. The pinion gear 25 can drive the large runner 26 to rotate. The large runner 26 is rotatably arranged with the seat frame 1 through a bearing, reducing the resistance of the large runner 26 to rotate and ensuring the stability of the rotation of the large runner 26. The large runner 26 can drive the transmission belt 27 to rotate. The transmission belt 27 can drive the small runner 5 to rotate. By utilizing the acceleration effect generated among the pinion gear 25, the large runner 26, the transmission belt 27, and the small runner 5, the rotation speed of the small runner 5 is increased.

[0046] In this embodiment, a limiting frame is slidably connected to the rear side of the rack 24. The rear side of the limiting frame is bolted to the inside of the seat frame 1. The output end of the telescopic cylinder 21 is bolted with a moving block. The convex block of the moving block is slidably connected to the sliding hole of the sliding frame 22.

[0047] The rack 24 is slidably arranged with the limiting frame through a slide rail to guide the rack 24, enabling the rack 24 to move smoothly left and right. The rear side of the moving block is slidably arranged with the inside of the seat frame 1 through a slide rail, enabling the moving block to move smoothly left and right.

[0048] In this embodiment, the transmission mechanism 3 includes a transmission gear 31, a sliding ring frame 32, and a transmission rod 33. The teeth of the transmission gear 31 mesh with the teeth at the bottom of the rack 24. The axis of the transmission gear 31 is rotatably connected to the inside of the seat frame 1. The convex block on the left side of the surface of the transmission gear 31 is slidably connected to the sliding hole on the right side of the sliding ring frame 32. The left end of the sliding ring frame 32 is hinged to the right end of the transmission rod 33. The transmission mechanism 3 further includes a transmission assembly hinged to the transmission rod 33.

[0049] The rack 24 can drive the transmission gear 31 to rotate. The transmission gear 31 is rotatably arranged with the seat frame 1 through a bearing, ensuring the stability of the rotation of the transmission gear 31. During the rotation of the transmission gear 31, its convex block can slide in the sliding hole of the sliding ring frame 32 and drive the sliding ring frame 32 to move. The sliding ring frame 32 can drive the transmission rod 33 to move. By utilizing the transmission gear 31 and the sliding ring frame 32, the left - right movement range of the sliding ring frame 32 can be restricted.

[0050] In this embodiment, the transmission assembly includes a rotating frame 34, a transmission bar 35, and a chain 36. The middle end of the rotating frame 34 is hinged to the inside of the seat frame 1, and the surface of the rotating frame 34 is hinged to the left end of the transmission rod 33. There are two transmission bars 35. The sliding holes at the top and bottom of the rotating frame 34 are respectively slidably connected to the bumps of the two transmission bars 35. The rear side of the transmission bar 35 is slidably connected to the inside of the seat frame 1. The two ends of the chain 36 are respectively bolted to the left ends of the two transmission bars 35, and the inside of the chain 36 meshes with the teeth of the driving sprocket 10.

[0051] The sliding hole of the rotating frame 34 slides on the bump of the transmission bar 35 and drives the upper transmission bar 35 to move to the right, which can drive the lower transmission bar 35 to move to the left. The upper transmission bar 35 can drive the top end on the right side of the chain 36 to move to the right. The chain 36 is driven by the two transmission bars 35 to rotate. The chain 36 can drive the driving sprocket 10 to rotate, and the state between the transmission rod 33 and the rotating frame 34 can be used to increase the amplitude of the left and right movement of the transmission bar 35.

[0052] In this embodiment, a guiding sprocket 37 is meshed with the bottom end inside the chain 36. The axis of the guiding sprocket 37 is rotatably connected to the left side of the bottom end inside the seat frame 1. The chain 36 is in a U-shaped structure.

[0053] The guiding sprocket 37 can guide the chain 36 so that the chain 36 can be connected to the driving sprocket 10. The guiding sprocket 37 is rotatably arranged on the seat frame 1 through a bearing, so that the guiding sprocket 37 can rotate smoothly.

[0054] In this embodiment, a stabilizing frame is slidably connected to the rear side of the sliding ring frame 32. The rear side of the stabilizing frame is bolted to the inside of the seat frame 1. The sliding ring frame 32 is in a T-shaped structure.

[0055] The sliding ring frame 32 is slidably arranged on the stabilizing frame through a slide rail to guide the sliding ring frame 32 so that the sliding ring frame 32 can move smoothly left and right, which is convenient for it to be connected to the transmission gear 31.

[0056] In this embodiment, the sliding ring frame 32 includes a sliding ring and a connecting strip integrally processed on the left side of the sliding ring. The rear side of the connecting strip is slidably connected to the inside of the stabilizing frame. The left end of the connecting strip is hinged to the right end of the transmission rod 33.

[0057] During the rotation of the transmission gear 31, its bump can move inside the sliding ring and drive the sliding ring to move left and right. The sliding ring can drive the connecting strip. The connecting strip is slidably arranged on the stabilizing frame through a slide rail to guide the connecting strip so that the connecting strip can move smoothly left and right.

[0058] In this embodiment, a support rod is hinged to the groove on the right side of the support frame 4. Legs are bolted to the four corners of the bottom of the seat frame 1. The middle part of the surface of the worm 8 is rotatably sleeved in the hole on the right side of the seat frame 1. The left end of the seat plate frame 13 is hinged to the top of the left side of the seat frame 1.

[0059] The support rod is used to support the backrest frame 4, prevent the backrest frame 4 from being in a suspended state, enhance stability, the legs support the sofa bed, and the armrest frame 14 can support the seat plate frame 13. The worm 8 is rotatably arranged on the seat frame 1 through bearings, allowing the worm 8 to rotate smoothly.

[0060] Working principle: When the sofa needs to be converted into a sofa bed, the telescopic cylinder 21 is driven electrically or hydraulically. The power supply or hydraulic power equipment is turned on, and the telescopic cylinder 21 extends to the right. During the extension process of the telescopic cylinder 21 to the right, its convex block slides in the sliding hole of the carriage 22 and drives the carriage 22 to rotate to the right. The carriage 22 is rotatably arranged on the seat frame 1 through bearings, reducing the resistance of the carriage 22 to rotate and ensuring the smooth rotation of the carriage 22. During the rotation process of the carriage 22 to the right, the sliding sleeve 23 slides on the surface of the carriage 22 and drives the sliding sleeve 23 to move to the right. The sliding sleeve 23 can drive the rack 24 to move to the right. The rack 24 can drive the pinion 25 to rotate clockwise. The pinion 25 can drive the large runner 26 to rotate clockwise. The large runner 26 is rotatably arranged on the seat frame 1 through bearings, reducing the resistance of the large runner 26 to rotate and ensuring the stability of the rotation of the large runner 26.

[0061] The large runner 26 can drive the transmission belt 27 to rotate clockwise. The transmission belt 27 can drive the small runner 5 to rotate clockwise. The small runner 5 can drive the large bevel gear 6 to rotate clockwise. The large bevel gear 6 is rotatably arranged on the seat frame 1 through bearings, ensuring the smoothness of the rotation of the large bevel gear 6. The large bevel gear 6 can drive the small bevel gear 7 to rotate. The small bevel gear 7 can drive the worm 8 to rotate. The worm 8 is rotatably arranged on the seat frame 1 through bearings, ensuring the smoothness of the rotation of the worm 8. The worm 8 can drive the worm gear 9 to rotate clockwise. The worm gear 9 can drive the backrest frame 4 to rotate to the right. During the rotation process, the support rod on the right side of the backrest frame 4 can be opened until the top of the backrest frame 4 is in a horizontal state.

[0062] The rack 24 can drive the transmission gear 31 to rotate clockwise. The transmission gear 31 is rotatably arranged with the seat frame 1 through bearings to ensure the stability of the rotation of the transmission gear 31. During the clockwise rotation of the transmission gear 31, its convex block can slide in the sliding hole of the sliding ring frame 32 and drive the sliding ring frame 32 to move to the right. The sliding ring frame 32 can drive the transmission rod 33 to move to the right. The transmission rod 33 can drive the rotating frame 34 to rotate clockwise. The sliding hole of the rotating frame 34 slides on the convex block of the transmission strip 35 and drives the upper transmission strip 35 to move to the right, and can drive the lower transmission strip 35 to move to the left. The upper transmission strip 35 can drive the chain 36 to move to the right. The guiding sprocket 37 can guide the chain 36 so that the chain 36 can be connected to the driving sprocket 10. The chain 36 is driven by the two transmission strips 35 to rotate clockwise. The chain 36 can drive the driving sprocket 10 to rotate clockwise. The driving sprocket 10 can drive the large gear disk 11 to rotate clockwise. The large gear disk 11 is rotatably arranged with the seat frame 1 through bearings to ensure the smoothness of the rotation of the large gear disk 11. The large gear disk 11 can drive the rotating gear 12 to rotate counterclockwise. The rotating gear 12 can drive the seat plate frame 13 to rotate counterclockwise, so that the seat plate frame 13 rotates 180 degrees until the armrest frame 14 of the seat plate frame 13 supports the seat plate frame 13.

[0063] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sofa bed for realizing rapid conversion, comprising a seat frame (1), characterized in that, A backrest frame (4) is hinged to the right side of the seat frame (1). A large bevel gear (6) is rotatably connected to the right side inside the seat frame (1). A small runner (5) is bolted to the surface of the large bevel gear (6). The teeth on the right side of the surface of the large bevel gear (6) mesh with a small bevel gear (7). A worm (8) is bolted to the right side of the axis of the small bevel gear (7). The right end of the worm (8) meshes with a worm wheel (9). The worm wheel (9) is bolted to the backrest frame (4). A large gear disk (11) is rotatably connected to the left side inside the seat frame (1). A driving sprocket (10) is bolted to the surface of the large gear disk (11). The teeth on the top of the large gear disk (11) mesh with a rotating gear (12). A seat plate frame (13) is bolted to the rear side of the rotating gear (12). Armrest frames (14) are bolted to the front side and the rear side of the top of the seat plate frame (13). The inside of the small runner (5) is drivingly connected to a power mechanism (2). The teeth of the power mechanism (2) mesh with a transmission mechanism (3). The transmission mechanism (3) meshes with the driving sprocket (10); The power mechanism (2) includes a telescopic cylinder (21), a sliding frame (22), a sliding sleeve (23) and a rack (24). The rear side of the telescopic cylinder (21) is bolted to the inside of the seat frame (1). The convex block at the output end of the telescopic cylinder (21) is slidably connected to the sliding hole at the bottom rear end of the sliding frame (22). The bottom end of the sliding frame (22) is rotatably connected to the bottom end inside the seat frame (1). The top end of the surface of the sliding frame (22) is slidably connected to the inside of the sliding sleeve (23). The rear side of the sliding sleeve (23) is hinged to the surface of the rack (24). The power mechanism (2) further includes a power component that meshes with the rack (24). The rack (24) meshes with the transmission mechanism (3); The power component includes a small gear (25), a large runner (26) and a transmission belt (27). The teeth of the small gear (25) mesh with the teeth on the bottom right side of the rack (24). The rear side of the small gear (25) is bolted to the surface of the large runner (26). The axis of the large runner (26) is rotatably connected to the inside of the seat frame (1). The inside of the large runner (26) is drivingly connected to the left side inside the transmission belt (27). The right side inside the transmission belt (27) is drivingly connected to the inside of the small runner (5); A limiting frame is slidably connected to the rear side of the rack (24). The rear side of the limiting frame is bolted to the inside of the seat frame (1). A moving block is bolted to the output end of the telescopic cylinder (21). The convex block of the moving block is slidably connected to the sliding hole of the sliding frame (22); The transmission mechanism (3) includes a transmission gear (31), a sliding ring frame (32) and a transmission rod (33). The teeth of the transmission gear (31) mesh with the teeth on the bottom of the rack (24). The axis of the transmission gear (31) is rotatably connected to the inside of the seat frame (1). The convex block on the left side of the surface of the transmission gear (31) is slidably connected to the sliding hole on the right side of the sliding ring frame (32). The left end of the sliding ring frame (32) is hinged to the right end of the transmission rod (33). The transmission mechanism (3) further includes a transmission component that is hinged to the transmission rod (33); The transmission assembly includes a rotating frame (34), a transmission bar (35), and a chain (36). The middle end of the rotating frame (34) is hinged to the inside of the seat frame (1), and the surface of the rotating frame (34) is hinged to the left end of the transmission rod (33). The number of the transmission bars (35) is two. The sliding holes at the top and bottom of the rotating frame (34) are respectively slidably connected to the bumps of the two transmission bars (35). The rear side of the transmission bar (35) is slidably connected to the inside of the seat frame (1). The two ends of the chain (36) are respectively bolted to the left ends of the two transmission bars (35). The inside of the chain (36) is meshed with the teeth of the driving sprocket (10). A guiding sprocket (37) is meshed with the bottom inside of the chain (36). The axis of the guiding sprocket (37) is rotatably connected to the left side of the bottom inside of the seat frame (1). The chain (36) is in a U-shaped structure. A stabilizing frame is slidably connected to the rear side of the sliding ring frame (32). The rear side of the stabilizing frame is bolted to the inside of the seat frame (1). The sliding ring frame (32) is in a T-shaped structure.

2. The convertible sofa bed for rapid conversion according to claim 1, characterized in that, The sliding ring frame (32) includes a sliding ring and a connecting bar integrally processed on the left side of the sliding ring. The rear side of the connecting bar is slidably connected to the inside of the stabilizing frame. The left end of the connecting bar is hinged to the right end of the transmission rod (33).

3. A convertible sofa bed according to claim 1, characterized in that, A support rod is hinged to the groove on the right side of the backrest (4). Legs are bolted to the four corners of the bottom of the seat frame (1). The middle part of the surface of the worm (8) is rotatably sleeved in the hole on the right side of the seat frame (1). The left end of the seat plate frame (13) is hinged to the top of the left side of the seat frame (1).

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