Folding bed with backrest

Abstract

The utility model relates to a folding bed with a backrest, and belongs to the technical field of tourism products. The first frame body is hinged to one end of the middle frame body, the second frame body is hinged to the end, away from the first frame body, of the middle frame body, the backrest frame body is hinged to the middle frame body and connected with the first frame body in a clamped mode, and the bearing cloth is arranged on the backrest frame body, the middle frame body and the second frame body. The backrest part of the backrest frame body is hinged to the bearing part of the middle frame body, the backrest part of the backrest frame body is obliquely arranged, and the clamping part of the backrest frame body is clamped with the end, away from the middle frame body, of the first frame body so as to support the inclined backrest frame body. The folding bed has the effect that the folding bed is provided with the backrest, so that the use comfort of a user is improved.

Description

Technical Field

[0001] This application relates to the technical field of travel products, and in particular to a folding bed with a backrest. Background Technology

[0002] Folding beds, as a type of portable furniture, are widely used in various settings such as homes, offices, and outdoor activities, greatly improving people's convenience and comfort.

[0003] However, most traditional folding beds lack a backrest structure, which fails to meet users' needs for back support when resting, thus limiting their application scenarios and user experience. Utility Model Content

[0004] In order to improve user comfort by providing a backrest for the folding bed, this application provides a folding bed with a backrest.

[0005] The folding bed with a backrest provided in this application adopts the following technical solution:

[0006] A folding bed with a backrest includes a foldable intermediate frame, a first frame hinged to one end of the intermediate frame, a second frame hinged to the end of the intermediate frame away from the first frame, a backrest frame hinged to the intermediate frame and engaged with the first frame, and a support fabric disposed on the backrest frame, the intermediate frame, and the second frame. The backrest of the backrest frame is hinged to the support portion of the intermediate frame, the backrest of the backrest frame is obliquely oriented, and the engaging portion of the backrest frame is engaged with the end of the first frame away from the intermediate frame to support the oblique backrest frame.

[0007] By adopting the above technical solution, the backrest frame enables the folding bed to have a backrest. The hinged design between the backrest frame and the middle frame allows users to adjust the angle of the backrest according to different needs, improving the comfort and flexibility of use. In addition, the design of the snap-fit ​​part enables the backrest to remain stable during use, effectively reducing displacement caused by external forces, and further enhancing the user experience.

[0008] This folding bed with a backrest not only has good stability, but also allows for free adjustment of the backrest frame's tilt angle, improving user comfort.

[0009] Preferably, when the folding bed is unfolded, the support parts of the first frame, the middle frame, and the second frame are all located on the same horizontal plane, and the ground support parts of the first frame and the second frame are both obliquely arranged, and the ground support parts of the first frame and the second frame support the ground in a figure-eight shape.

[0010] By adopting the above technical solution, when the folding bed is unfolded, the load-bearing parts of the first frame, the middle frame, and the second frame are all located on the same horizontal plane, ensuring the flatness and stability when the user uses it. At the same time, the ground support parts of the first and second frames are both set at an angle and support the ground in a figure-eight shape, which increases the overall stability and load-bearing capacity of the folding bed and effectively reduces the risk of tipping over due to uneven force during use.

[0011] Preferably, a tensioning cloth is fixedly connected to the supporting cloth at the connection between the backrest frame and the intermediate frame, and a tensioning rod is provided on the supporting part of the first frame, with the end of the tensioning cloth away from the supporting cloth connected to the tensioning rod.

[0012] By adopting the above technical solution, the tensioning fabric setting ensures that the supporting fabric can always maintain a taut state during use, effectively reducing the loosening problem caused by long-term use and improving the user's experience and comfort.

[0013] Preferably, the ground support portion of the intermediate frame is hinged to the load-bearing portion of the intermediate frame via a first connector, and the load-bearing portions of the first and second frames are both hinged to the load-bearing portions of the intermediate frame via second connectors. The support portion of the first frame is connected between the load-bearing portion and the ground support portion of the first frame, and the support portion of the second frame is connected between the load-bearing portion and the ground support portion of the second frame.

[0014] By adopting the above technical solutions, the hinged design between the ground support and load-bearing parts of the intermediate frame allows the folding bed to flexibly switch between its working and folded states, improving the space utilization rate of the folding bed. The load-bearing parts of the first and second frames are respectively hinged to the load-bearing parts of the intermediate frame through second connectors, achieving a stable connection between the components and ensuring the stability of the folding bed during use. At the same time, the first and second frames are each equipped with support parts, further enhancing the overall structural strength of the folding bed and minimizing the risk of deformation or damage during load-bearing. These designs not only improve the user experience but also extend the service life of the folding bed.

[0015] Preferably, the ground support portion of the intermediate frame is provided with a first reinforcing member, and the ground support portions of the first frame and the second frame are both provided with second reinforcing members.

[0016] By adopting the above technical solution, the structural strength of the ground support parts of the intermediate frame, the first frame, and the second frame is increased, thereby improving the stability and durability of the entire folding bed.

[0017] Preferably, the snap-fit ​​portion on the backrest frame has multiple snap-fit ​​slots, which snap-fit ​​with the first frame to make the tilt angle of the backrest frame adjustable.

[0018] By adopting the above technical solution, the tilt angle of the backrest frame can be adjusted in multiple levels according to the user's actual needs, improving the flexibility and comfort of use.

[0019] Preferably, the first frame has multiple through holes on its support portion, and both ends of the tensioning rod are threaded with fasteners, which pass through the through holes and are threaded to the ends of the tensioning rod.

[0020] By adopting the above technical solution, the two ends of the tensioning rod can be connected to the tensioning rod end threadedly through different holes by fasteners, thereby realizing the adjustment of the position of the tensioning rod, and thus achieving the purpose of adjusting the tension of the tensioned cloth, thereby improving the user experience and comfort.

[0021] Preferably, the first frame has an elongated hole on its supporting part, and at least two receiving grooves are provided on the elongated hole. The receiving grooves are connected to the elongated hole, and a fixing member that is threadedly connected to the end of the tensioning rod passes through the elongated hole. The head of the fixing member is accommodated in the receiving groove.

[0022] By adopting the above technical solution, the design of the elongated hole allows the tensioning rod to move within a certain range, thereby adjusting the tension of the tensioned cloth and improving the user experience and comfort.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The backrest frame provides the folding bed with a backrest. The hinged design between the backrest frame and the middle frame allows users to adjust the backrest angle according to different needs, improving comfort and flexibility. In addition, the snap-fit ​​design ensures that the backrest remains stable during use, effectively reducing displacement caused by external forces and further enhancing the user experience.

[0025] 2. When the folding bed is unfolded, the load-bearing parts of the first frame, the middle frame, and the second frame are all located on the same horizontal plane, ensuring flatness and stability for the user. At the same time, the ground support parts of the first and second frames are both set at an angle and in a figure-eight shape, which increases the overall stability and load-bearing capacity of the folding bed and effectively reduces the risk of tipping over due to uneven force during use.

[0026] 3. The hinged design between the ground support and load-bearing parts of the intermediate frame allows the folding bed to flexibly switch between its active and folded states, improving space utilization. The load-bearing parts of the first and second frames are hinged to the load-bearing parts of the intermediate frame via second connectors, achieving a stable connection between components and ensuring the stability of the folding bed during use. Simultaneously, each of the first and second frames is equipped with a support, further enhancing the overall structural strength of the folding bed and minimizing the risk of deformation or damage during load-bearing. These designs not only improve the user experience but also extend the lifespan of the folding bed. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application.

[0028] Figure 2 This is a structural schematic diagram of the folding bed frame of this application.

[0029] Figure 3 yes Figure 2 A magnified view of part A in the middle.

[0030] Figure 4 This is a structural schematic diagram of the supporting fabric and tensioning fabric of this application.

[0031] Figure 5 This is a structural diagram of the folding bed frame of this application in a semi-folded state.

[0032] Figure 6 yes Figure 5 A magnified view of part B in the middle section.

[0033] Figure 7 yes Figure 5 A magnified view of part C in the middle.

[0034] Figure 8 This is a schematic diagram of the structure of the first connecting frame and the tensioning rod in Embodiment 2 of this application.

[0035] Figure 9 This is a schematic diagram of the structure of the first connecting frame and the tensioning rod in Embodiment 3 of this application.

[0036] Figure 10 This is a schematic diagram of the structure of the first connecting frame and the tensioning rod in Embodiment 4 of this application.

[0037] Explanation of reference numerals in the attached drawings: 1. Intermediate support frame; 11. First side rod; 111. Connecting piece; 12. Second side rod; 13. First reinforcing member; 14. First connecting block; 15. Second connecting block; 16. Locking block; 17. Locking groove; 171. First fastening space; 18. First hinge block; 181. Extension ear; 182. Insertion block; 19. Second hinge block; 191. Hinge ear; 192. Slot; 2. First connecting frame; 21. 1. Support frame; 22. First support rod; 3. Second connecting frame; 31. Second support frame; 32. Second support rod; 33. Reinforcing plate; 34. Reinforcing strip; 4. Backrest body; 41. Snap-fit ​​arm; 411. Snap-fit ​​block; 412. Snap-fit ​​groove; 42. Connecting arm; 5. Bearing cloth; 51. Clearance opening; 52. Tension cloth; 53. Tension rod; 6. Perforation; 61. Fastener; 7. Long strip hole; 71. Receiving groove; 72. Fixing component. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1-10 This application will be described in further detail.

[0039] Example 1

[0040] This application discloses a folding bed with a backrest. (See also...) Figure 1 and Figure 2 The folding bed with a backrest includes a foldable intermediate frame, a first frame hinged to one end of the intermediate frame, a second frame hinged to the end of the intermediate frame away from the first frame, a backrest frame hinged to the intermediate frame and engaged with the first frame, and a support fabric 5 disposed on the backrest frame, the intermediate frame, and the second frame.

[0041] The intermediate frame includes an intermediate support frame 1 with a U-shaped cross-section and an upward-facing opening, two sets of first connectors respectively connected to the ends of the two arms of the intermediate support frame 1, and a first side rod 11 and a second side rod 12 symmetrically connected to each set of first connectors; under the connecting action of the first connectors, the first side rod 11 and the second side rod 12 can be flipped and retracted towards the intermediate support frame 1 after the first frame and the second frame are folded down.

[0042] It should be noted that the intermediate support frame 1 is the ground support part of the intermediate frame, and the two first side rods 11 and the two second side rods 12 are the load-bearing parts of the intermediate frame; the load-bearing cloth 5 is set on the first side rods 11 and the second side rods 12. At the same time, in order to improve the strength of the intermediate support frame 1, a first reinforcing member 13 is provided between the two side arms of the intermediate support frame 1; in this embodiment, the first reinforcing member 13 is a reinforcing frame, the cross-section of the reinforcing frame is U-shaped and its opening faces downward, and the outer side of the side arm of the reinforcing frame is fixedly connected to the inner side of the side arm of the intermediate support frame 1.

[0043] Each of the first side rod 11 and the second side rod 12 has a second connecting member at its far end. The first side rod 11 is hinged to the load-bearing part of the first frame via the second connecting member, and the second side rod 12 is hinged to the load-bearing part of the second frame via another second connecting member. The ground support part of the first frame is hinged to the first side rod 11, and the ground support part of the second frame is hinged to the second side rod 12. The support part of the first frame is connected between the load-bearing part and the ground support part of the first frame; the support part of the second frame is connected between the load-bearing part and the ground support part of the second frame. The backrest of the backrest frame is hinged to the two first side rods 11, and the backrest of the backrest frame is hinged to the snap-fit ​​part of the backrest frame. The snap-fit ​​part of the backrest frame is snap-fitted to the end of the first frame away from the intermediate frame.

[0044] Reference Figure 2 and Figure 3 The first frame includes a first connecting frame 2 and a first ground support frame 21 with a U-shaped cross-section, and a first support rod 22 hinged between the first connecting frame 2 and the first ground support frame 21. The opening of the first connecting frame 2 faces the first side rod 11, and the end of the side arm of the first connecting frame 2 is hinged to the corresponding first side rod 11 via a second connector. The side arm of the first ground support frame 21 is hinged to the inside of the corresponding first side rod 11. The top end of the first support rod 22 is hinged to the inside of the side arm of the first connecting frame 2, and the bottom end of the first support rod 22 is hinged to the outside of the side arm of the first ground support frame 21.

[0045] It should be noted that the first connecting frame 2 is the load-bearing part of the first frame, the first ground support frame 21 is the ground support part of the first frame, and the first support rod 22 is the support part of the first frame.

[0046] The second frame includes a U-shaped second connecting frame 3 and a second ground support frame 31, and a second support rod 32 hinged between the second connecting frame 3 and the second ground support frame 31. The opening of the second connecting frame 3 faces the second side rod 12, and the end of the side arm of the second connecting frame 3 is hinged to the corresponding second side rod 12 via a second connector. The side arm of the second ground support frame 31 is hinged to the inner side of the corresponding second side rod 12. The top end of the second support rod 32 is hinged to the inner side of the side arm of the second connecting frame 3, and the bottom end of the second support rod 32 is hinged to the outer side of the side arm of the second ground support frame 31. When the folding bed is folded up, the intermediate ground support frame 1 and the second connecting frame 3 are on the same horizontal plane, and there is a certain gap between the intermediate ground support frame 1 and the second connecting frame 3 to ensure that the folding bed can be folded up as much as possible after folding, thereby reducing the space occupied by the folding bed.

[0047] It should be noted that the second connecting frame 3 is the load-bearing part of the second frame, the second ground support frame 31 is the ground support part of the second frame, and the second support rod 32 is the support part of the second frame.

[0048] To improve the strength of the first support frame 21 and the second support frame 31, a second reinforcing member is provided on both the first support frame 21 and the second support frame 31. In this embodiment, the second reinforcing member includes a reinforcing plate 33 and a reinforcing strip 34 fixedly connected to the side of the reinforcing plate 33. The reinforcing plate 33 located on the first support frame 21 is fixedly connected to one side of the first support frame 21, and the opposite ends of the reinforcing strip 34 abut against the two side arms of the first support frame 21, respectively.

[0049] An L-shaped connecting piece 111 is fixedly connected to the outer side of the first side rod 11 and to the end of the first side rod 11 near the first connecting frame 2. The top end of the connecting piece 111 is located above the first side rod 11. The backrest frame includes a U-shaped backrest body 4 and two snap-fit ​​arms 41 respectively hinged to the inner sides of the two arms of the backrest body 4. The end of the side arm of the backrest body 4 is hinged to the inner side of the top end of the connecting piece 111 corresponding to the position.

[0050] A snap-fit ​​block 411 is fixedly connected to the snap-fit ​​arm 41 facing the first connecting frame 2. Multiple linearly distributed snap-fit ​​grooves 412 are formed on the side of the snap-fit ​​block 411 away from the snap-fit ​​arm 41. These grooves are evenly spaced along the length of the snap-fit ​​block 411. The snap-fit ​​block 411 engages with the end of the first connecting frame 2 away from the first side rod 11 via the snap-fit ​​grooves 412. The tilt of the backrest body 4 is adjusted by engaging the snap-fit ​​grooves 412 with the first connecting frame 2 at different positions. To allow simultaneous rotation of both snap-fit ​​arms 41, a connecting arm 42 is fixedly connected between the two snap-fit ​​arms 41 (see...). Figure 5 The connecting arm 42 is located at the end of the snap-fit ​​arm 41 away from the backrest body 4; and the connecting arm 42 and the two snap-fit ​​arms 41 form a frame with a U-shaped cross section. When the backrest body 4 is flipped so that the backrest body 4 and the first connecting frame 2 are aligned vertically, there is a gap between the end of the first connecting frame 2 away from the first side rod 11 and the end of the snap-fit ​​block 411, so that the backrest body 4 can be laid flat as much as possible.

[0051] It should be noted that the backrest body 4 is the backrest of the backrest frame, and the snap-fit ​​arm 41 is the snap-fit ​​part of the backrest frame.

[0052] When the folding bed is unfolded, the support sections of the first frame, the middle frame, and the second frame are all located on the same horizontal plane. The ground supports of the first and second frames are both angled, forming a V-shape. The ground support of the middle frame is vertical. The backrest of the backrest is angled, tilting upwards away from the middle frame. The tilt angle of the backrest is adjustable, and its locking part engages with the end of the first frame away from the middle frame to support the tilted backrest.

[0053] Reference Figure 2and Figure 4 The supporting fabric 5 has clearance openings 51 at the connection points between the backrest frame and the middle frame, the connection points between the first side rod 11 and the second side rod 12, the connection points between the middle frame and the second frame, and the connection points between the second support rod 32 and the second connecting frame 3. The presence of clearance openings 51 allows the folding bed to be folded or unfolded normally. A tensioning fabric 52 is fixedly connected to the supporting fabric 5 at the connection points between the backrest frame and the middle frame. A tensioning rod 53 is provided on the supporting part of the first frame. The end of the tensioning fabric 52 away from the supporting fabric 5 is connected to the tensioning rod 53 so that the supporting fabric 5 can always be in a taut state, thereby improving the user's experience and comfort. In this embodiment, the opposite ends of the tensioning rod 53 are fixedly connected to the inner sides of the two side arms of the first connecting frame 2, respectively.

[0054] Reference Figure 5 and Figure 6 The first connecting member includes a first connecting block 14 fixedly connected to the end of the first side rod 11 away from the first connecting frame 2 and a second connecting block 15 fixedly connected to the end of the second side rod 12 away from the second connecting frame 3; the side arm of the intermediate support frame 1 is clamped between the two clamping parts of the second connecting block 15, the two clamping parts of the second connecting block 15 are clamped between the two clamping parts of the first connecting block 14, and the clamping parts of the first connecting block 14, the clamping parts of the second connecting block 15 and the side arm of the intermediate support frame 1 are hinged.

[0055] Both the first connecting block 14 and the second connecting block 15 have locking blocks 16 fixedly connected to their respective ends, and the locking blocks 16 on the first connecting block 14 and the second connecting block 15 are offset from each other. Both the first connecting block 14 and the second connecting block 15 have slots 17 at their respective ends, and the locking blocks 16 on the first connecting block 14 engage with the slots 17 on the second connecting block 15, and vice versa. A first fastening space 171 is formed on the bottom surface of the first connecting block 14 between its two clamping parts, and a second fastening space is formed on the bottom surface of the second connecting block 15 between its two clamping parts. When the first connecting block 14 and the second connecting block 15 are fastened together, the side arm end of the intermediate support frame 1 is fastened between the first fastening space 171 and the second fastening space.

[0056] Reference Figure 5 and Figure 7 The second connector located on the first side rod 11 and the second connector located on the second side rod 12 have the same structure and principle. Therefore, in this embodiment, the second connector located on the second side rod 12 will be used as an example for explanation.

[0057] The second connecting component includes a first hinge block 18 fixedly connected to the end of the second side rod 12 away from the first side rod 11, and a second hinge block 19 fixedly connected to the end of the side arm of the second connecting frame 3. An extension ear 181 is fixedly connected to one side of the first hinge block 18. Two hinge ears 191 are fixedly connected to the side of the second hinge block 19 near the first hinge block 18. The extension ear 181 is sandwiched between the two hinge ears 191, and the hinge ears 191 are hinged to the extension ears 181. A plug 182 is fixedly connected to the end of the first hinge block 18 near the second hinge block 19. A slot 192 is provided at the end of the second hinge block 19 near the first hinge block 18 to engage with the plug 182. When the second connecting frame 3 is rotated so that the second connecting frame 3 and the second side rod 12 are on the same horizontal plane, the plug 182 engages with the slot 192.

[0058] The implementation principle of a folding bed with a backrest in this application embodiment is as follows: When the folding bed needs to be folded up, firstly, the locking groove 412 is disengaged from the locking of the first connecting frame 2. At this time, the backrest body 4 can be flipped towards the first side rod 11 so that the side arm of the backrest body 4 is aligned vertically with the first side rod 11. Then, the two locking arms 41 are flipped through the connecting arm 42 so that the locking arms 41 are in a horizontal position and the locking blocks 411 are facing upward. Next, the folding bed is tilted to the side, and the first connecting frame 2 and the second connecting frame 3 are flipped in sequence so that the first connecting frame 2 is aligned with the first side rod 11 and the second connecting frame 3 is aligned with the second side rod 12. Finally, the first side rod 11 and the second side rod 12 are flipped at the same time so that the first side rod 11 and the second side rod 12 are aligned together with the middle ground support frame 1, thus completing the folding up of the folding bed.

[0059] Example 2

[0060] Reference Figure 8 The difference from Embodiment 1 lies in the connection method between the tensioning rod 53 and the first connecting frame 2. Multiple through holes 6 are provided on both side arms of the first connecting frame 2, and these through holes 6 on the same side arm are evenly spaced along a straight line. Fasteners 61 are threaded to both ends of the tensioning rod 53, passing through the through holes 6 and threadedly connecting to the ends of the tensioning rod 53. In this embodiment, the fasteners 61 include, but are not limited to, screws and bolts. Thus, by passing the fasteners 61 through the through holes 6 at different positions, the position of the tensioning rod 53 can be adjusted, thereby allowing the tension of the tensioned cloth 52 to be adjusted.

[0061] Example 3

[0062] Reference Figure 9The difference from the above embodiment lies in the connection method between the tensioning rod 53 and the first connecting frame 2. Both sides of the first connecting frame 2 have elongated holes 7, the length direction of which is perpendicular to the length direction of the tensioning rod 53. Each elongated hole 7 has two receiving grooves 71, which communicate with the elongated hole 7 and are located at opposite ends of the hole. Both ends of the tensioning rod 53 are threadedly connected to fixing members 72. The rod of the fixing member 72 passes through the elongated hole 7 and is threadedly connected to the end of the tensioning rod 53. The rod of the fixing member 72 is slidably connected to the elongated hole 7, and the head of the fixing member 72 is accommodated within the receiving groove 71. In this embodiment, the fixing member 72 includes, but is not limited to, screws and bolts. By connecting the fixing member 72 to the receiving grooves 71 at different positions, the position of the tensioning rod 53 can be adjusted, thereby allowing the tension of the tensioned cloth 52 to be adjusted.

[0063] Example 4

[0064] Reference Figure 10 The difference from Embodiment 3 is that: multiple receiving grooves 71 are provided, and the multiple receiving grooves 71 are evenly distributed along the length direction of the elongated hole 7.

[0065] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A folding bed with a backrest, characterized in that: It includes a foldable intermediate frame, a first frame hinged to one end of the intermediate frame, a second frame hinged to the end of the intermediate frame away from the first frame, a backrest frame hinged to the intermediate frame and snapped into the first frame, and a support cloth (5) disposed on the backrest frame, the intermediate frame and the second frame. The backrest of the backrest frame is hinged to the support part of the intermediate frame. The backrest of the backrest frame is obliquely arranged. The snapping part of the backrest frame is snapped into the end of the first frame away from the intermediate frame to support the oblique backrest frame.

2. A folding bed with a backrest according to claim 1, characterized in that: When the folding bed is unfolded, the support parts of the first frame, the middle frame, and the second frame are all located on the same horizontal plane. The ground support parts of the first frame and the second frame are both set at an angle, and the ground support parts of the first frame and the second frame support the ground in a figure-eight shape.

3. A folding bed with a backrest according to claim 1, characterized in that: A tensioning cloth (52) is fixedly connected to the support cloth (5) at the connection between the backrest frame and the intermediate frame. A tensioning rod (53) is provided on the support part of the first frame. The end of the tensioning cloth (52) away from the support cloth (5) is connected to the tensioning rod (53).

4. A folding bed with a backrest according to claim 1, characterized in that: The ground support portion of the intermediate frame is hinged to the load-bearing portion of the intermediate frame via a first connector. The load-bearing portions of the first frame and the load-bearing portions of the second frame are both hinged to the load-bearing portion of the intermediate frame via second connectors. The support portion of the first frame is connected between the load-bearing portion of the first frame and the ground support portion of the first frame. The support portion of the second frame is connected between the load-bearing portion of the second frame and the ground support portion of the second frame.

5. A folding bed with a backrest according to claim 1, characterized in that: The ground support portion of the intermediate frame is provided with a first reinforcing member (13), and the ground support portions of the first frame and the second frame are both provided with second reinforcing members.

6. A folding bed with a backrest according to claim 1, characterized in that: The backrest frame has multiple snap-fit ​​slots (412) on its snap-fit ​​part, and the snap-fit ​​slots (412) snap-fit ​​with the first frame so that the tilt angle of the backrest frame can be adjusted.

7. A folding bed with a backrest according to claim 3, characterized in that: The first frame has multiple through holes (6) on its support part. Both ends of the tension rod (53) are threaded with fasteners (61). The fasteners (61) pass through the through holes (6) and are threaded to the ends of the tension rod (53).

8. A folding bed with a backrest according to claim 3, characterized in that: The first frame has an elongated hole (7) on its supporting part, and a fastener (72) threadedly connected to the end of the tensioning rod (53) is inserted through the elongated hole (7).

9. A folding bed with a backrest according to claim 8, characterized in that: At least two receiving grooves (71) are provided on the elongated hole (7), the receiving grooves (71) are connected to the elongated hole (7), and the head of the fixing member (72) is received in the receiving grooves (71).

Images