Safe anti-pinch sofa bed frame

Abstract

The utility model discloses a safe anti-pinch type sofa bed frame, which belongs to the technical field of sofas, and comprises a backrest, a sofa plate and a lengthening plate, the backrest is fixedly connected with the sofa plate, the sofa plate is connected with the lengthening plate in a sliding manner, two armrest plates are vertically and symmetrically fixed on the backrest, and the two armrest plates are connected with the lengthening plate in a sliding manner. A sliding groove is formed in the backrest, a supporting plate is fixedly arranged between the two armrest plates, the upper surface of the supporting plate is fixedly connected with the lower surface of the sofa plate, a plurality of supporting legs are fixedly arranged at the bottoms of the backrest and the armrest plates, and a plurality of inserting grooves distributed at equal intervals are formed in the sofa plate. When the lengthening plate is pushed, after the limiting plate slides to the bottom, a certain distance can exist between the lengthening strip and the inserting groove, the risk of hand clamping is effectively reduced, through the arrangement of the locking mechanism, rapid locking can be achieved, locking operation is effectively simplified, and the problem that in the prior art, seamless inserting of the lengthening plate and the inserting groove exists, and the risk of hand clamping exists is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sofas, and particularly relates to a safe hand-pinching prevention sofa bed frame. Background Art

[0002] As a common home furniture, sofa bed can be used as a sofa at ordinary times. When needed, the backrest of the sofa can be folded back and laid flat to use as a bed.

[0003] After searching, a Chinese patent with authorization announcement number CN218869848U discloses a sofa bed, including a backrest, an extension board, a sofa cushion and a sofa board, wherein the sofa board is fixed between two lap boards, and a plurality of equally spaced plug-in grooves are provided on the upper surface of the sofa board, the extension board includes a long board and a support bar, a plurality of equally spaced support bars are fixed on the left surface of the long board, the support bar is slidably plugged into the plug-in groove, and the sofa cushion is placed on the sofa board.

[0004] Although the above device opens a plurality of plug-in slots on the sofa board and slides the extension board and the support strip into the plug-in slots of the sofa board, the extension board can be pulled outward to increase the use area of ​​the sofa board when needed. However, when the extension board is inserted into the plug-in slot, the gap between the extension board and the plug-in slot gradually narrows until the two are tightly attached. As the gap gradually decreases, there is a risk of pinching fingers, and the above device uses a fixing rod locking device, which is relatively cumbersome to operate.

[0005] For this reason, we propose a safety hand-preventing sofa bed frame to solve the above problems. Utility Model Content

[0006] The utility model aims to solve the problem in the prior art that the extension plate is seamlessly plugged into the plug-in slot, which may cause the risk of pinching the hand, and proposes a safe and anti-pinch sofa bed frame.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A safe and hand-pinching-proof sofa bed frame comprises a backrest, a sofa board and an extension board, wherein the backrest is fixedly connected to the sofa board, the sofa board is slidably connected to the extension board, two armrest boards located at both ends of the sofa board are vertically and symmetrically fixedly arranged at both ends of the side surface of the backrest, a plurality of supporting legs are fixedly arranged at the bottom of the backrest and the armrest board, a plurality of equally spaced plug-in slots are opened on the sofa board, one end of the plug-in slot away from the backrest passes through the sofa board, the extension board comprises a plurality of extension strips slidably arranged in the plug-in slots, a plurality of the extension strips are vertically and fixedly connected to the same long board at one end away from the backrest, and the bottom surfaces of the plurality of extension strips are close to the backrest. A same limiting plate is fixedly provided near one end of the backrest, a horizontal upper locking plate is fixedly provided between the two armrest plates, the upper locking plate is located below the limiting plate, a mounting groove is provided on the side of the long plate, a main rod is fixedly provided between the two side walls in the mounting groove, a handle is rotatably provided on the main rod, a locking mechanism extending to the bottom of the locking plate and used to lock the extended plate is also provided in the mounting groove, sliders are fixedly provided at both ends of the limiting plate, and limiting grooves adapted to the sliders are provided on the two armrest plates close to the sofa board, the sliders are slidably connected to the limiting grooves, and the length of the limiting grooves is less than the length of the plug-in grooves.

[0009] Preferably, the sofa board is a T-shaped board, both sides of the top of the sofa board are respectively fixedly connected to two armrest boards, a support board fixed to the two armrest boards is provided below the bottom end of the sofa board, and the sofa board is fixedly connected to the upper surface of the support board.

[0010] Preferably, the locking mechanism comprises a secondary rod fixedly arranged in the mounting groove, a connecting rod 1 is fixedly arranged on the handle, and two locking rods are slidably arranged on the secondary rod. Rod A connecting rod 2 is fixedly arranged between the two locking rods, and one end of the two locking rods away from the connecting rod 2 is commonly connected to a lower locking plate which is horizontally arranged and passes through the mounting groove. An arc plate is rotatably arranged between the connecting rod 1 and the connecting rod 2, and a plurality of slots are opened at the bottom of the upper locking plate. A block which is adapted to the slot is fixedly arranged at the end of the lower locking plate.

[0011] Preferably, one end of each of the two locking rods is penetrated by a sliding groove for the auxiliary rod to pass through, the sliding groove is elliptical and the upper and lower ends of the auxiliary rod are in contact with the inner wall of the sliding groove.

[0012] Preferably, the clamping block includes a fixed block fixedly mounted on the lower locking plate, a fixed rod parallel to the backrest is fixedly mounted on the top of the fixed block, two clamping plates are hinged on the fixed rod, springs are fixedly provided on one side of the two clamping plates close to the fixed block, and the two springs are fixedly connected to the fixed block.

[0013] Preferably, two symmetrically arranged rollers are fixedly mounted below the long strip.

[0014] To sum up, the technical effects and advantages of the utility model are as follows: the device sets the length of the limit slot to be shorter than the length of the plug-in slot. When the extension plate is pushed, the limit plate slides to the bottom of the limit slot, so that a certain distance can be created between the extension strip and the plug-in slot, thereby effectively reducing the risk of pinching fingers. This solves the problem in the prior art that there is a risk of pinching fingers when the extension plate is seamlessly plugged into the plug-in slot. By setting a locking mechanism, quick locking can be achieved, effectively simplifying the locking operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a cross-sectional view of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure in the installation slot of the utility model;

[0018] Figure 4 This is a schematic diagram of the connection between the limit plate and the handrail plate of the utility model;

[0019] Figure 5 This is a schematic diagram of the card block structure of the utility model.

[0020] In the figure: 1. backrest; 2. sofa board; 3. extension board; 301. extension strip; 302. long board; 4. armrest board; 5. support board; 6. support leg; 7. plug-in slot; 8. limit plate; 801. slider; 9. upper locking plate; 901. slot; 10. installation slot; 11. handle; 12. main rod; 121. auxiliary rod; 122. connecting rod one; 123. connecting rod two; 124. locking rod; 125. arc plate; 126. slide slot; 13. lower locking plate; 14. limit slot; 15. block; 151. fixing block; 152. fixing rod; 153. card plate; 154. spring; 16. roller. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] The embodiment of the utility model provides a safe and hand-pinching-proof sofa bed frame, which solves the problem of the risk of pinching hands in the prior art by seamlessly plugging the extension plate into the plug-in slot. The device sets the length of the limit slot to be shorter than the length of the plug-in slot. When the extension plate is pushed, the limit plate slides to the bottom of the limit slot, so that a certain distance can be made between the extension strip and the plug-in slot, thereby effectively reducing the risk of pinching hands. By setting a locking mechanism, quick locking can be achieved, effectively simplifying the locking operation.

[0023] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] Reference Figure 1-3 A safe and hand-preventing sofa bed frame comprises a backrest 1, a sofa board 2 and an extension board 3. The backrest 1 is fixedly connected to the sofa board 2, and the sofa board 2 is slidably connected to the extension board 3. Two armrest boards 4 located at both ends of the sofa board 2 are vertically and symmetrically fixed at both ends of the side of the backrest 1. A plurality of supporting legs 6 are fixedly arranged at the bottom of the backrest 1 and the armrest boards 4. By arranging the supporting legs 6, the stability of the sofa can be maintained, the height of the sofa can be improved, and the comfort of use can be increased.

[0025] The sofa board 2 is provided with a plurality of equally spaced plug-in slots 7, one end of the plug-in slot 7 away from the backrest 1 penetrates the sofa board 2, the extension board 3 comprises a plurality of extension strips 301 slidably arranged in the plug-in slot 7, the ends of the plurality of extension strips 301 away from the backrest 1 are vertically fixedly connected with the same long strip board 302, and the bottom surfaces of the plurality of extension strips 301 are fixedly provided with the same limiting plate 8 near the end of the backrest 1. By sliding the extension strips 301 in the plug-in slot 7, it is convenient to change the shape of the sofa bed, reduce the storage volume of the sofa bed, save storage space, and improve the practicality of the sofa bed. At the same time, the limiting plate 8 is provided to limit the extension board 3 in the sofa board 2 to prevent the extension board 3 from being directly pulled out of the sofa board 2 and being difficult to assemble.

[0026] A horizontal upper locking plate 9 is fixedly arranged between the two armrest plates 4, and the upper locking plate 9 is located below the limit plate 8. A mounting groove 10 is opened on the side of the long strip plate 302, and a main rod 12 is fixedly arranged between the two side walls in the mounting groove 10. A handle 11 is rotatably arranged on the main rod 12. A locking mechanism extending to the bottom of the locking plate and used to lock the extension plate 3 is also arranged in the mounting groove 10. By setting the mounting groove 10, it is convenient to store the handle 11 to prevent the handle 11 from protruding from the sofa and colliding during walking to cause injury. By setting the locking mechanism and cooperating with the upper locking plate 9, the sofa bed can be locked to avoid accidentally touching and squeezing the extension plate 3 after the shape is changed, so that the extension strip 301 moves, resulting in a reduction in the area of ​​the sofa bed, a reduction in comfort, and other problems. By setting the locking mechanism, quick locking can also be achieved, which effectively simplifies the locking operation.

[0027] The locking mechanism includes a secondary rod 121 fixedly arranged in the mounting groove 10, a connecting rod 122 fixedly arranged on the handle 11, two locking rods 124 slidably arranged on the secondary rod 121, a connecting rod 2 123 fixedly arranged between the two locking rods 124, and one end of the two locking rods 124 away from the connecting rod 2 123 is commonly connected to a lower locking plate 13 horizontally arranged and passing through the mounting groove 10, an arc plate 125 is rotatably arranged between the connecting rod 1 122 and the connecting rod 2 123, a plurality of slots 901 are opened at the bottom of the upper locking plate 9, and the end of the lower locking plate 13 is fixed A card block 15 adapted to the card slot 901 is provided. When the sofa bed needs to be opened, the handle 11 is pulled from the vertical position in the installation slot 10 to the horizontal position. The rotation of the handle 11 causes the connecting rod 122 to rotate. The rotation of the connecting rod 122 drives the end of the arc plate 125 connected to the connecting rod 122 to move away from the installation slot 10. The arc plate 125 at one end connected to the connecting rod 122 moves to drive the connecting rod 2 123 to move toward the installation slot 10. The movement of the connecting rod 2 123 drives the two locking rods 12 4 slides in the direction away from the installation groove 10. As the connecting rod 123 descends, the lower locking plate 13 is also tilted downward, so that the block 15 of the lower locking rod 124 is disengaged from the slot 901 of the upper locking plate 9. The handle 11 is pulled, and the limit plate 8 slides along the limit slot 14, so that the extension plate 3 can be pulled out of the plug-in slot 7, so that the sofa is transformed into a bed. When the limit plate 8 slides to the outermost end of the limit slot 14, the handle 11 is pushed back from the horizontal position to the vertical position in the installation groove 10. The rotation of the handle 11 causes the connecting rod 122 to rotate, and the connecting rod 122 rotates. Then, the end of the arc plate 125 connected to the connecting rod 1 122 will be driven to move toward the mounting groove 10, and the arc plate 125 connected to the connecting rod 1 122 will move to drive the connecting rod 2 123 to move away from the mounting groove 10. The movement of the connecting rod 2 123 will drive the two locking rods 124 to slide toward the mounting groove 10. With the rise of the connecting rod 2 123, the lower locking plate 13 is driven to tilt upward, so that the block 15 of the lower locking rod 124 is engaged with the slot 901 of the upper locking plate 9, thereby locking the sofa bed to prevent it from moving further.

[0028] Reference Figure 1 , Figure 2 The sofa board 2 is a T-shaped board, and the top two sides of the sofa board 2 are fixedly connected to the two armrest boards 4 respectively. A supporting board 5 fixed to the two armrest boards 4 is provided below the bottom end of the sofa board 2, and the sofa board 2 is fixedly connected to the upper surface of the supporting board 5. By providing the supporting board 5, the supporting property of the sofa board 2 is improved and the supporting effect of the sofa is guaranteed.

[0029] Reference Figure 2 , Figure 3The two locking rods 124 are each provided with a slide groove 126 at one end for the auxiliary rod 121 to pass through. The slide groove 126 is elliptical and the upper and lower ends of the auxiliary rod are in contact with the inner wall of the slide groove. By opening the slide groove 126 on the locking rod 124, the lower locking plate 13 and the upper locking plate 9 can be locked and separated. When locking is required, the two locking rods 124 slide along the slide groove 126 toward the direction close to the mounting groove 10. As the connecting rod 123 rises, the lower locking plate 13 is driven to rotate upward, so that the lower locking plate 13 and the upper locking plate 9 are locked. When opening is required, the two locking rods 124 slide along the slide groove 126 toward the direction away from the mounting groove 10. As the connecting rod 123 descends, the lower locking plate 13 is driven to rotate downward, so that the lower locking plate 13 is separated from the upper locking plate 9.

[0030] Reference Figure 4 Slide blocks 801 are fixedly provided at both ends of the limiting plate 8, and limiting grooves 14 adapted to the slide blocks 801 are provided on the sides of the two armrest plates 4 close to the sofa plate 2. The slide blocks 801 are slidably connected to the limiting grooves 14. By setting the limiting grooves 14, the limiting plate 8 can slide along the limiting grooves 14, which not only enhances the supporting performance of the extension plate 3, but also ensures the directional sliding of the extension plate 3.

[0031] Reference Figure 2 The length of the limit groove 14 is smaller than the length of the plug-in groove 7. When the extension plate 3 is pushed, the limit plate 8 slides to the end of the limit groove 14, so that there is a certain distance between the extension strip 301 and the plug-in groove 7, reducing the risk of pinching the hand caused by seamlessly plugging the extension plate 3 into the plug-in groove 7 in the prior art.

[0032] Reference Figure 2 , Figure 3 , Figure 5 The card block 15 includes a fixed block 151 fixedly mounted on the lower locking plate 13, and a fixed rod 152 parallel to the backrest 1 is fixedly mounted on the top of the fixed block 151. Two card plates 153 are hinged on the fixed rod 152. The two card plates 153 are fixedly provided with springs 154 on one side close to the fixed block 151. The two springs 154 are fixedly connected to the fixed block 151. By providing a plurality of card slots 901 on the upper locking plate 9, the sofa bed of different widths can be adjusted to fit more spaces. By arranging the card block 15 on the lower locking plate 13 When the sofa bed needs to be locked, the handle 11 is turned to make the block 15 approach the slot 901. When the card plate 153 on one side abuts against the side wall of the slot 901, the spring 154 is elastic and the card plate 153 will continuously compress the spring 154 toward the direction close to the fixed block 151. At this time, the card plate 153 contracts inward, making it easier for the block 15 to enter the slot 901 until the block 15 completely enters the slot 901. At this time, the spring 154 will return to its original state, and the card plate 153 will be opened to abut against the inner wall of the slot 901 to achieve locking.

[0033] Reference Figure 1 Two symmetrically arranged rollers 16 are fixedly arranged below the long strip board 302. By arranging the rollers 16, it is convenient to pull the extended board 3, making it easier to pull the handle 11.

[0034] Working principle: when the sofa bed needs to be opened, the handle 11 is pulled from the vertical position in the installation slot 10 to the horizontal position. The rotation of the handle 11 causes the connecting rod 122 to rotate. The rotation of the connecting rod 122 drives the end 1 of the curved plate 125 connected to the connecting rod 122 to move away from the installation slot 10. The movement of the curved plate 125 at one end connected to the connecting rod 122 drives the connecting rod 2 123 to move toward the installation slot 10. The movement of the connecting rod 2 123 drives the two locking rods 124 to slide along the slide slot 126 away from the installation slot 10. As the connecting rod 2 123 descends, the lower locking rod 124 is also tilted downward, so that the block 15 is disengaged from the slot 901. At this time, the extension plate 3 can be pulled outward to convert the sofa. When the bed is formed, when the limit plate 8 slides to a suitable position along the limit groove 14, the handle 11 is pushed back from the horizontal position to the vertical position in the installation groove 10, and the rotation of the handle 11 causes the connecting rod 122 to rotate. The rotation of the connecting rod 122 drives the end 1 of the arc plate 125 connected to the connecting rod 122 to move toward the installation groove 10, and the arc plate 125 at one end connected to the connecting rod 122 moves to drive the connecting rod 2 123 to move away from the installation groove 10. The movement of the connecting rod 2 123 drives the two locking rods 124 to slide along the slide groove 126 toward the installation groove 10. As the connecting rod 2 123 rises, the block 15 on the lower locking rod 124 is driven to engage with the card groove 901 on the upper locking plate 9, so that the sofa bed can be quickly locked;

[0035] When you need to convert the sofa bed back into a sofa, just repeat the above steps.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A safe and hand-preventing sofa bed frame, comprising a backrest (1), a sofa board (2) and an extension board (3), characterized in that: The backrest (1) is fixedly connected to the sofa board (2), and the sofa board (2) is slidably connected to the extension board (3). Two armrest boards (4) located at the two ends of the sofa board (2) are vertically and symmetrically fixedly arranged at the two ends of the side of the backrest (1). A plurality of supporting legs (6) are fixedly arranged at the bottom of the backrest (1) and the armrest board (4). A plurality of equally spaced plug-in slots (7) are provided on the sofa board (2), and the end of the plug-in slot (7) away from the backrest (1) penetrates the sofa board (2). The extension board (3) comprises a plurality of extension strips (301) slidably arranged in the plug-in slots (7), and the ends of the plurality of extension strips (301) away from the backrest (1) are vertically and fixedly connected to the same long strip board (302), and the bottom surfaces of the plurality of extension strips (301) close to the end of the backrest (1) are fixedly provided with the same limit plate (8). ), a horizontal upper locking plate (9) is fixedly arranged between the two armrest plates (4), the upper locking plate (9) is located below the limit plate (8), a mounting groove (10) is provided on the side of the long strip plate (302), a main rod (12) is fixedly arranged between the two side walls in the mounting groove (10), a handle (11) is rotatably arranged on the main rod (12), a locking mechanism extending to the bottom of the locking plate and used for locking the extension plate (3) is also arranged in the mounting groove (10), sliders (801) are fixedly arranged at both ends of the limit plate (8), and a limit groove (14) adapted to the slider (801) is provided on the side of the two armrest plates (4) close to the sofa plate (2), the slider (801) is slidably connected to the limit groove (14), and the length of the limit groove (14) is less than the length of the plug-in groove (7).

2. The safety anti-pinch sofa bed frame according to claim 1, characterized in that: The sofa board (2) is a T-shaped board, and the top two sides of the sofa board (2) are respectively fixedly connected to two armrest boards (4), and a support board (5) fixed to the two armrest boards (4) is provided below the bottom end of the sofa board (2), and the sofa board (2) is fixedly connected to the upper surface of the support board (5).

3. The safety hand-pinch-proof sofa bed frame according to claim 1, characterized in that: The locking mechanism comprises a secondary rod (121) fixedly arranged in the mounting groove (10); a connecting rod 1 (122) is fixedly arranged on the handle (11); two locking rods (124) are slidably arranged on the secondary rod (121); a connecting rod 2 (123) is fixedly arranged between the two locking rods (124); one end of the two locking rods (124) away from the connecting rod 2 (123) is commonly connected to a lower locking plate (13) which is horizontally arranged and passes through the mounting groove (10); an arc plate (125) is rotatably arranged between the connecting rod 1 (122) and the connecting rod 2 (123); a plurality of slots (901) are opened at the bottom of the upper locking plate (9); and a block (15) adapted to the slot (901) is fixedly arranged at the end of the lower locking plate (13).

4. The safety hand-pinch-proof sofa bed frame according to claim 3, characterized in that: One end of each of the two locking rods (124) is penetrated by a slide groove (126) for the auxiliary rod (121) to pass through, the slide groove (126) is elliptical and the upper and lower ends of the auxiliary rod are in contact with the inner wall of the slide groove.

5. The safety hand-pinch-proof sofa bed frame according to claim 3, characterized in that: The clamping block (15) comprises a fixing block (151) fixedly mounted on the lower locking plate (13); a fixing rod (152) parallel to the backrest (1) is fixedly mounted on the top of the fixing block (151); two clamping plates (153) are hingedly mounted on the fixing rod (152); springs (154) are fixedly mounted on one side of the two clamping plates (153) close to the fixing block (151); and the two springs (154) are fixedly connected to the fixing block (151).

6. The safety hand-pinch-proof sofa bed frame according to claim 1, characterized in that: Two symmetrically arranged rollers (16) are fixedly mounted below the long strip plate (302).

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