Bed with adjustable bed surface tension degree

Abstract

The utility model discloses a bed with a tensity-adjustable bed surface, which comprises a length-adjustable and detachable bed frame, an elastic bed surface coated on the bed frame; the tail supporting plate is detachably connected with one end of the bed frame; the head supporting plate is detachably connected with the other end of the bed frame; the backrest plate is detachably connected with the head supporting plate. The tension degree of the elastic bed surface can be adjusted by adjusting the length of the bed frame, so that the hardness of the bed surface can be adjusted according to the requirements of a user; besides, the tail supporting plate and the head supporting plate can support the bed frame, so that the bed frame is separated from the ground, the elastic bed surface wrapping the bed frame is prevented from rubbing the ground and being damaged, the bed frame, the tail supporting plate, the head supporting plate and the backrest plate are detachable, the bed is conveniently decomposed into a plurality of single parts to be transported, and the bed can be directly taken into a home through an elevator; and carrying is more time-saving and labor-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of beds, and more specifically to a bed with adjustable bed surface tension. Background Art

[0002] There are various beds with elastic bed surfaces on the existing market. Some use mattresses with springs or sponges installed inside, and some directly have elastically deformable bed surfaces, such as palm fiber beds, rattan beds, wire beds, etc. The air permeability and elasticity of the mattresses are poor. Especially in summer, sponge or spring mattresses cannot be used due to poor air permeability. Although the bed surfaces of palm fiber beds, rattan beds, and wire beds are breathable, after a long time of use, due to the aging of the bed surface materials, they will form irreversible collapses towards the heavy-loaded areas, which will prevent the body from stretching, affect blood circulation in the human body, and damage physical health. Moreover, the existing elastic bed surfaces are fixedly connected to the bed surface frames, and the tension of the bed surface cannot be adjusted independently by consumers after leaving the factory, so it cannot meet the needs of different people with different habits in various situations. In addition, the existing palm fiber beds, rattan beds, and wire beds are all pre-assembled integral structures. Due to their large volume, they are inconvenient to transport, and cannot take the elevator and can only be carried up the stairs by hand to high-rise residential buildings, which is not only time-consuming and laborious, but also has a high transportation cost.

[0003] Therefore, how to provide a bed with adjustable bed surface tension and convenient transportation is an urgent problem to be solved by those skilled in the art. Content of the Utility Model

[0004] In view of this, the utility model provides a bed with adjustable bed surface tension and convenient transportation.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A bed with adjustable bed surface tension, comprising:

[0007] A bed frame with adjustable length and detachable structure, on which an elastic bed surface is covered;

[0008] A tail support plate, which is detachably connected to one end of the bed frame;

[0009] A head support plate, which is detachably connected to the other end of the bed frame;

[0010] A backrest plate, which is detachably connected to the head support plate.

[0011] As can be seen from the above technical solutions, compared with the prior art, the present utility model discloses a bed with adjustable bed surface tension. By adjusting the length of the bed frame, the tension of the elastic bed surface can be adjusted, so that the softness and hardness of the bed surface can be adjusted according to the needs of the user. In addition, the tail support plate and the head support plate can support the bed frame, so that the bed frame is separated from the ground, avoiding damage to the elastic bed surface covering the bed frame by rubbing against the ground. Moreover, the bed frame, the tail support plate, the head support plate, and the backrest plate can all be disassembled and assembled, and the bed frame can be disassembled, which is convenient for the bed to be disassembled into multiple single parts for transportation, and can be directly carried into the house by elevator, making the handling more time-saving and labor-saving.

[0012] Further, the elastic bed surface is in a sleeve shape, and the bed frame includes:

[0013] A first side end frame, which is fixedly connected to the sleeve opening at one end of the elastic bed surface;

[0014] A second side end frame, which is fixedly connected to the sleeve opening at the other end of the elastic bed surface;

[0015] A length-adjustable folding intermediate support frame, which is placed inside the elastic bed surface through the frame opening of the second side end frame to support the elastic bed surface, and both ends of the folding intermediate support frame are detachably connected to the first side end frame and the second side end frame respectively.

[0016] The beneficial effects of adopting the above technical solutions are as follows: The first side end frame and the second side end frame are fixedly connected to the sleeve openings at both ends of the elastic bed surface in advance. In this way, the two ends of the elastic bed surface can be pre-shaped and fixed, without the need to install the elastic bed surface on the bed frame later in a time-consuming and laborious manner. Moreover, the folding intermediate support frame is in a folded state initially, which is convenient for placing the frame body inside the elastic bed surface through the frame opening of the second side end frame. Then, the folding intermediate support frame is unfolded and connected and fixed to the first side end frame and the second side end frame to realize the support of the elastic bed surface.

[0017] Further, the folding intermediate support frame includes:

[0018] Length-adjustable side support frames, there are two side support frames, and both ends of each side support frame are detachably connected to the first side end frame and the second side end frame respectively;

[0019] A foldable connecting rod assembly, and both ends of the foldable connecting rod assembly are installed between the two side support frames to realize the mutual approach or separation of the two side support frames.

[0020] The beneficial effects of adopting the above technical solution are as follows: By adjusting the length of the side support frame, the tension of the elastic bed surface can be adjusted, so that the softness and hardness of the bed surface can be adjusted according to the needs of the user; moreover, through the folding and unfolding of the foldable connecting rod assembly, the two side support frames can be made to approach or move away from each other, that is, the folding and unfolding of the two side support frames can be realized. When the two side support frames are folded, the volume of the frame body is reduced, which is not only convenient for transportation but also convenient for the frame body to be placed inside the elastic bed surface through the frame opening of the second side end frame, realizing the installation of the frame body.

[0021] Further, each of the two side support frames includes:

[0022] A side beam frame, the first insertion rod at one end of the side beam frame is inserted into the first insertion tube on the first side end frame, and both ends of the foldable connecting rod assembly are respectively installed between the two side beam frames to realize the approach or separation of the two side beam frames;

[0023] A screw rod adjusting frame, the screw rod adjusting frame includes:

[0024] A connecting frame, the second insertion rod at one end of the connecting frame is inserted into the second insertion tube at the other end of the side beam frame, and the third insertion rod at the other end of the connecting frame is inserted into the third insertion tube on the second side end frame;

[0025] An adjusting screw rod, the adjusting screw rod is arranged on the longitudinal rod of the connecting frame and is in threaded connection with the threaded hole at the other end of the side beam frame. A wrench acting cap and a stop cap for screwing by a first adjusting tool are fixed on the adjusting screw rod. The wrench acting cap and the stop cap respectively stop on two opposite sides of the longitudinal rod. A first adjusting hole for the first adjusting tool to extend into is provided at a position corresponding to the head of the adjusting screw rod on the second side end frame.

[0026] The beneficial effects of adopting the above technical solution are as follows: During adjustment, the first adjusting tool is passed through the first adjusting hole to screw the wrench acting cap, thereby rotating the adjusting screw rod. Under the screw thread fit between the adjusting screw rod and the threaded hole on the side beam frame, the side beam frame is driven to move away from or close to the connecting frame, thereby realizing the elongation or shortening of the overall length of the side support frame, making the tension of the elastic bed surface become larger or smaller, so that the softness and hardness of the bed surface can be adjusted according to the needs of the user. Therefore, the tension of the bed surface can be adjusted by rotating the wrench acting cap, and the adjustment is very convenient and fast. In addition, the stop cap can prevent the connecting frame from moving towards the side beam frame under the contraction force of the elastic bed surface, avoiding affecting the adjustment of the length of the side support frame.

[0027] Further, a second adjusting hole is provided at a position on the tail support plate corresponding to the first adjusting hole.

[0028] The beneficial effects of adopting the above technical solutions are as follows: It is easy for the user to use the first adjustment tool from the outside of the bed to sequentially pass through the second adjustment hole and the first adjustment hole to screw the wrench acting cap, without removing the tail support plate for adjustment, which greatly improves the convenience during adjustment.

[0029] Furthermore, there are two foldable connecting rod assemblies arranged at intervals, and each of them includes: two connecting rods, a spring, and two abutting rods. One ends of the two connecting rods are respectively hinged to the two side beam frames, the other ends of the two connecting rods are hinged and connected, the two ends of the spring are respectively fixedly connected to positions of the two connecting rods close to their other ends, one ends of the two abutting rods are respectively fixedly connected to positions of the two connecting rods close to their other ends, and the other ends of the two abutting rods can abut against each other.

[0030] The beneficial effects of adopting the above technical solutions are as follows: Initially, the foldable connecting rod assembly is in a folded state, that is, the two connecting rods are close to each other in a V shape, the spring is in a compressed state, and the other ends of the two abutting rods abut against each other. Insert the frame in this folded state into the elastic bed surface from the frame opening of the second side end frame. Then, use a tool to push the tip of the V-shaped connecting rod to make the two connecting rods unfold. At this time, the spring is in a stretched state, the other ends of the two abutting rods are separated, and the frame unfolds to support the elastic bed surface. Therefore, the foldable connecting rod assembly has a simple structure, is easy to unfold and fold, and under the pulling force of the spring, it is easier for the two connecting rods to automatically approach each other when folding, so that the user can fold the two connecting rods without much force.

[0031] Furthermore, connectors are fixedly installed on both of the two side beam frames, the connectors are hinged to one end of the connecting rod, and there are also two telescopic support rod assemblies for preventing the two connecting rods from folding back. The two telescopic support rod assemblies are a group, and there are two groups. One ends of the two telescopic support rod assemblies in one group are both hinged to the second side end frame, one ends of the two telescopic support rod assemblies in the other group are both hinged to the first side end frame, and the other ends of the two telescopic support rod assemblies in each group respectively abut against the corresponding two connectors.

[0032] The beneficial effects of adopting the above technical solutions are as follows: When the two connecting rods unfold, that is, when the two side support frames unfold, use the two telescopic support rod assemblies to support the two side support frames, so as to avoid the two side support frames being subjected to the inward pressure of the bed surface under the action of the contraction force of the elastic bed surface, resulting in the two connecting rods folding back, thereby affecting the effective support of the side support frames for the elastic bed surface.

[0033] Further, a first mounting bracket is fixed on the frame opening of the first side-end frame, and a second mounting bracket is detachably mounted on the frame opening of the second side-end frame. The first mounting bracket and the second mounting bracket have the same structure. One ends of two telescopic support rod assemblies in a group are both hinged to the first mounting bracket, and one ends of two telescopic support rod assemblies in the other group are both hinged to the second mounting bracket. Moreover, the mounting structures of the two groups of telescopic support rod assemblies with respect to the first mounting bracket and the second mounting bracket are the same;

[0034] A slot is provided on the connecting member. Each telescopic support rod assembly includes:

[0035] A mounting square rod, the bottom end and the top end of which are respectively hinged to the upper beam rod and the lower beam rod on the second mounting bracket through pin shafts;

[0036] A first plugging rod, one end of which is closed and a bolt through-hole is provided on this end. A stop boss is fixed on the outer wall of the first plugging rod. One end of the first plugging rod is plugged into the mounting square rod, and one end of the mounting square rod abuts against one side of the stop boss;

[0037] A second plugging rod, one end of which is closed and a threaded hole is provided on this end. One end of the second plugging rod is plugged into the first plugging rod, and the other end of the second plugging rod is plugged into the slot;

[0038] An adjusting bolt, which passes through the bolt through-hole and is in threaded connection with the threaded hole.

[0039] The beneficial effects of adopting the above technical solution are as follows: Initially, the second mounting bracket is not assembled with the second side-end frame, which facilitates the folded intermediate support frame to extend into the elastic bed surface through the frame opening of the second side-end frame. Then, the second mounting bracket is installed on the second side-end frame. Moreover, after the two connecting rods are unfolded, the first plugging rod is inserted into the mounting square rod, and the stop boss abuts against one end of the mounting square rod. At this time, the mounting square rod can swing left and right, which facilitates the second plugging rod to swing left and right, enabling the position of the second plugging rod to be adjusted and making it easy for the other end of the second plugging rod to be quickly inserted into the slot. Then, the adjusting bolt is rotated. Under the threaded cooperation between the adjusting bolt and the second plugging rod, the second plugging rod moves along the length direction of the first plugging rod. Further, the second plugging rod pushes the connecting member outwards, and finally, the second plugging rod plays an internal supporting role for the side support frame, effectively preventing the two side support frames from folding back due to the force exerted by the elastic bed surface.

[0040] Further, third adjusting holes for a second adjusting tool to extend into and screw the adjusting bolt are provided on both the tail support plate and the head support plate.

[0041] The beneficial effects of adopting the above technical solution are as follows: it is easy for the user to use the second adjustment tool outside the bed to pass through the third adjustment hole and turn the wrench acting cap, without removing the tail support plate and the head support plate for adjustment, which greatly improves the convenience during adjustment.

[0042] Further, two first connecting square tubes are fixed on one side surface of the head support plate. Positioning holes are formed in the tube walls of the first connecting square tubes near their upper tube openings. Two second connecting square tubes are fixed on one side surface of the backrest plate. A third connecting square tube is fixed at the lower tube opening of the second connecting square tube. It also includes a U-shaped elastic sheet built in one end tube opening of the third connecting square tube. One end of the U-shaped elastic sheet is fixedly connected to the inner wall of one end tube opening of the third connecting square tube. The other end of the U-shaped elastic sheet is an elastic end, on which a plug pin is fixed. The plug pin extends out of a through hole on one side tube wall of the third connecting square tube. One end of the third connecting square tube is inserted into the upper tube opening of the first connecting square tube. The plug pin is inserted into the positioning hole. The first connecting square tube and the second connecting square tube are arranged at an included angle α = 90° - 130°.

[0043] The beneficial effects of adopting the above technical solution are as follows: the plug pin is fixed on the elastic end of the U-shaped elastic sheet, so that the plug pin can stretch in the through hole. In this way, when installing the backrest plate, after inserting one end of the third connecting square tube into the upper tube opening of the first connecting square tube, the plug pin abuts against the inner tube wall of the first connecting square tube and retracts into the third connecting square tube until it moves to the position of the positioning hole. Under the action of the elastic end of the U-shaped elastic sheet, the plug pin extends out and is inserted into the positioning hole, thereby realizing the quick installation of the backrest plate and the head support plate. Moreover, the first connecting square tube and the second connecting square tube are arranged at an included angle α = 90° - 130°, making the backrest plate arranged at a certain inclination angle relative to the head support plate, improving the comfort of the user's back leaning on the backrest plate. Description of the Drawings

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0045] Figure 1 It is a schematic structural diagram of a first perspective of a bed with adjustable bed surface tension provided by the present invention.

[0046] Figure 2 It is a schematic structural diagram of a second perspective of a bed with adjustable bed surface tension provided by the present invention.

[0047] Figure 3 is Figure 2 an enlarged schematic view of the structure of local A in

[0048] Figure 4 a schematic view of the structure when the backrest plate and the head support plate are disassembled.

[0049] Figure 5 is Figure 4 an enlarged schematic view of the structure of local B in

[0050] Figure 6 a schematic view of the backrest plate.

[0051] Figure 7 is Figure 6 an enlarged schematic view of the structure of local C in

[0052] Figure 8 a schematic view of the structure of the first perspective when the bed frame, the head support plate and the tail support plate are disassembled.

[0053] Figure 9 is Figure 8 an enlarged schematic view of the structure of local D in

[0054] Figure 10 a schematic view of the structure of the second perspective when the bed frame, the head support plate and the tail support plate are disassembled.

[0055] Figure 11 is Figure 10 an enlarged schematic view of the structure of local E in

[0056] Figure 12 a schematic view of the elastic bed surface disassembled from the bed frame.

[0057] Figure 13 is Figure 12 an enlarged schematic view of the structure of local F in

[0058] Figure 14 is Figure 12 an enlarged schematic view of the structure of local G in

[0059] Figure 15 a schematic view of the first perspective of the disassembled bed frame.

[0060] Figure 16 a schematic view of the second perspective of the disassembled bed frame.

[0061] Figure 17 a schematic view of the first perspective of the disassembled telescopic support rod assembly.

[0062] Figure 18 a schematic view of the second perspective of the disassembled telescopic support rod assembly.

[0063] Figure 19Schematic diagram when the collapsible connecting rod assembly is folded.

[0064] Figure 20 It is Figure 19 Schematic diagram of the enlarged structure of the partial H in Specific implementation manner

[0065] 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.

[0066] Such as Figures 1 - 20 , the embodiments of the present invention disclose a bed with adjustable bed surface tension, including:

[0067] A bed frame 1 with adjustable length and detachable structure, on which an elastic bed surface 2 is covered (the elastic bed surface 2 can be made of breathable PVC material or breathable high-density fabric, or the elastic bed surface 2 is a terylene net cloth or nylon woven grid cloth, so that the bed surface has strong elasticity, good tensile strength and good air permeability, making people more comfortable when lying, and can be used in both summer and winter, allowing people to lie directly without the need to additionally install a mattress, further highlighting its good air permeability);

[0068] A tail support plate 3, which is detachably connected to one end of the bed frame 1;

[0069] A head support plate 4, which is detachably connected to the other end of the bed frame 1;

[0070] A backrest plate 5, which is detachably connected to the head support plate 4.

[0071] Specifically, the elastic bed surface 2 is in a sleeve shape, and the bed frame 1 includes:

[0072] A first side end frame 11, which is fixedly connected to the mouth of one end of the elastic bed surface 2, specifically, it can be fixed by screws or bonding;

[0073] A second side end frame 12, which is fixedly connected to the mouth of the other end of the elastic bed surface 2, specifically, it can be fixed by screws or bonding;

[0074] A foldable intermediate support frame 13 with adjustable length, which is placed inside the elastic bed surface 2 through the frame opening of the second side end frame 12 to support the elastic bed surface 2, and both ends of the foldable intermediate support frame 13 are detachably connected to the first side end frame 11 and the second side end frame 12 respectively.

[0075] In the above embodiments, the folding intermediate support frame 13 includes:

[0076] Side support frames 131 with adjustable lengths. There are two side support frames 131, and both ends of each side support frame 131 are detachably connected to the first side end frame 11 and the second side end frame 12 respectively;

[0077] A foldable connecting rod assembly 132. Both ends of the foldable connecting rod assembly 132 are installed between the two side support frames 131 to enable the two side support frames 131 to approach or move away from each other.

[0078] In a specific embodiment, both of the two side support frames 131 include:

[0079] A side beam frame 1311. A first plug rod 13111 at one end of the side beam frame 1311 is inserted into a first socket tube 111 on the first side end frame 11. Both ends of the foldable connecting rod assembly 132 are installed between the two side beam frames 1311 to enable the two side beam frames 1311 to approach or move away from each other;

[0080] A screw rod adjusting frame 1312. The screw rod adjusting frame 1312 includes:

[0081] A connecting frame 13121. A second plug rod at one end of the connecting frame 13121 is inserted into a second socket tube 13112 at the other end of the side beam frame 1311. A third plug rod 131211 at the other end of the connecting frame 13121 is inserted into a third socket tube 121 on the second side end frame 12;

[0082] An adjusting screw rod 13122. The adjusting screw rod 13122 passes through a longitudinal rod 131212 on the connecting frame 13121 and is threadedly connected to a threaded hole at the other end of the side beam frame 1311. A wrench action cap 13123 and a stop cap 13124 for screwing by a first adjusting tool are fixed on the adjusting screw rod 13122. The wrench action cap 13123 and the stop cap 13124 respectively stop at two opposite sides of the longitudinal rod 131212. A first adjusting hole 1201 for the first adjusting tool to extend into is provided at a position corresponding to the head of the adjusting screw rod 13122 on the second side end frame 12.

[0083] Among them, the first adjusting tool can be a wrench rod. One end of the wrench rod is an internal hexagonal socket, and the wrench action cap 13123 is an external hexagonal cap. The wrench action cap is screwed and adjusted by sleeving the internal hexagonal socket on the external hexagonal cap.

[0084] A second adjusting hole 301 is provided at a position on the tail support plate 3 corresponding to the first adjusting hole 1201.

[0085] There are two collapsible connecting rod assemblies 132 arranged at intervals, each of which includes: two connecting rods 1321, a spring 1322, and two abutting rods 1323. One ends of the two connecting rods 1321 are respectively hinged to the two side beam frames 1311 through a pin shaft, and the other ends of the two connecting rods 1321 are connected by a pin shaft hinge. Both ends of the spring 1322 are respectively fixedly connected to positions of the two connecting rods 1321 close to their other ends by screws or welding. One ends of the two abutting rods 1323 are respectively fixedly connected to positions of the two connecting rods 1321 close to their other ends by welding, and the other ends of the two abutting rods 1323 can abut against each other.

[0086] Connectors 6 are fixedly welded on both of the two side beam frames 1311. The connectors 6 are hinged to one end of the connecting rod 1321 through a pin shaft. There are also two telescopic support rod assemblies 7 for preventing the two connecting rods 1321 from folding back. The two telescopic support rod assemblies 7 are in a group, and there are two groups. One ends of the two telescopic support rod assemblies 7 in one group are both hinged to the second side end frame 12, and one ends of the two telescopic support rod assemblies 7 in the other group are both hinged to the first side end frame 11. The other ends of the two telescopic support rod assemblies 7 in each group respectively abut against the corresponding two connectors 6.

[0087] A first mounting bracket 112 is fixedly connected to the frame opening of the first side end frame 11 by screws or welding, and a second mounting bracket 122 is installed on the frame opening of the second side end frame 12 by screws. The first mounting bracket 112 and the second mounting bracket 122 have the same structure. One ends of the two telescopic support rod assemblies 7 in one group are both hinged to the first mounting bracket 112, and one ends of the two telescopic support rod assemblies 7 in the other group are both hinged to the second mounting bracket 122, and the installation structures of the two groups of telescopic support rod assemblies 7 with respect to the first mounting bracket 112 and the second mounting bracket 122 are the same;

[0088] The connector 6 is provided with a slot 601. Each telescopic support rod assembly 7 includes:

[0089] A mounting square rod 71. The bottom end and the top end of the mounting square rod 71 are respectively hinged to the upper beam rod 1221 and the lower beam rod 1222 on the second mounting bracket 122 through a pin shaft;

[0090] A first plugging rod 72. One end of the first plugging rod 72 is closed and a bolt through hole is formed in this end. A stop boss 721 is fixed on the outer wall of the first plugging rod 72. One end of the first plugging rod 72 is plugged on the mounting square rod 71, and one end of the mounting square rod 71 on one side of the stop boss 721 abuts against it;

[0091] A second plugging rod 73. One end of the second plugging rod 73 is closed and a threaded hole is formed in this end. One end of the second plugging rod 73 is plugged in the first plugging rod 72, and the other end of the second plugging rod 73 is plugged in the slot 601;

[0092] Adjusting bolt 74 passes through the bolt through-hole and is threadedly connected to the threaded hole.

[0093] Both the tail support plate 3 and the head support plate 4 are provided with third adjustment holes 302 for the second adjustment tool to extend into and screw the adjusting bolt 74.

[0094] Among them, the second adjustment tool can be a wrench rod. One end of the wrench rod is an internal hexagonal socket, and the head of the adjusting bolt 74 is an external hexagonal cap. The adjusting bolt 74 is screwed and adjusted by sleeving the internal hexagonal socket on the external hexagonal cap.

[0095] Two first connecting square tubes 8 are fixed on one side of the head support plate 4 by screws. Positioning holes 801 are formed in the tube wall of the first connecting square tube 8 near its upper tube opening. Two second connecting square tubes 9 are fixed on one side of the backrest plate 5 by screws. A third connecting square tube 10 is fixed at the lower tube opening of the second connecting square tube 9 by screws or welding. It also includes a U-shaped elastic piece 14 built in one end tube opening of the third connecting square tube 10. One end of the U-shaped elastic piece 14 is fixedly connected to the inner wall of one end tube opening of the third connecting square tube 10 by screws or welding. The other end of the U-shaped elastic piece 14 is an elastic end, on which a plug pin 15 is fixed. The plug pin 15 extends out of the through-hole 101 on one side tube wall of the third connecting square tube 10. One end of the third connecting square tube 10 is inserted into the upper tube opening of the first connecting square tube 8, and the plug pin 15 is inserted into the positioning hole 801. The first connecting square tube 8 and the second connecting square tube 9 are arranged at an included angle α = 90° - 130°, preferably 120°. In this way, the backward tilting angle of the backrest plate is not too large, ensuring the comfort of the user's back against the backrest plate.

[0096] Detachable assembly of the bed:

[0097] When leaving the factory, the bed leaves the factory in the form of spare parts, including a tail support plate, a head support plate, a backrest plate, a folding intermediate support frame, an elastic bed surface with a first side end frame and a second side end frame. This is convenient for packaging and transportation. After arriving at the destination, start assembling each part: Refer to Figure 19 , put the folded folding intermediate support frame into the elastic bed surface from the frame opening of the second side end frame, and then use a top push rod tool or push the tip of the V-shaped connecting rod with the foot to unfold the two connecting rods. At this time, the spring is in a stretched state, and the other ends of the two abutting rods are separated. The folding intermediate support frame unfolds to support the elastic bed surface. Then, insert and install the two ends of the folding intermediate support frame onto the first side end frame and the second side end frame respectively. Then, use the first adjustment tool to screw the adjustment screw to adjust the length of the side support frame to a suitable position, and correspondingly use the second adjustment tool to screw the adjustment bolt to make the second insertion rod provide internal support for the side support frame. After adjustment, install the tail support plate and the head support plate, and finally install the backrest plate.

[0098] Adjustability of the bed's tension:

[0099] When the elastic bed surface collapses and the bed surface tension needs to be adjusted, use the first adjustment tool to screw the adjustment screw again, adjust the length of the side support frame to an appropriate position, and correspondingly use the second adjustment tool to screw the adjustment bolt so that the second insertion rod provides internal support for the side support frame.

[0100] In addition, a plurality of insertion openings for inserting mosquito net rods are reserved on the first side end frame and the second side end frame, which also facilitates the installation of mosquito nets in the later stage.

[0101] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple. For the relevant parts, reference can be made to the description in the method part.

[0102] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bed with adjustable bed surface tension, characterized in that: include: A length-adjustable and detachable bed frame (1), wherein the bed frame (1) is covered with an elastic bed surface (2); A rear support plate (3), wherein the rear support plate (3) is detachably connected to one end of the bed frame (1); A head support plate (4), the head support plate (4) being detachably connected to the other end of the bed frame (1); A backrest plate (5), wherein the backrest plate (5) is detachably connected to the head support plate (4).

2. A bed with adjustable bed tension according to claim 1, characterized in that: The elastic bed surface (2) is in the shape of a sleeve, and the bed frame (1) comprises: A first side end frame (11), the first side end frame (11) being fixedly connected to a sleeve at one end of the elastic bed surface (2); A second side end frame (12), the second side end frame (12) being fixedly connected to the other end sleeve of the elastic bed surface (2); A foldable intermediate support frame (13) with adjustable length, wherein the foldable intermediate support frame (13) is placed inside the elastic bed surface (2) through the frame opening of the second side end frame (12) to support the elastic bed surface (2), and the two ends of the foldable intermediate support frame (13) are respectively detachably connected to the first side end frame (11) and the second side end frame (12).

3. A bed with adjustable bed tension according to claim 2, characterized in that: The foldable intermediate support frame (13) comprises: Side support frames (131) with adjustable lengths, two side support frames (131), and two ends of each side support frame (131) are detachably connected to the first side end frame (11) and the second side end frame (12) respectively; A foldable connecting rod assembly (132), wherein two ends of the foldable connecting rod assembly (132) are respectively installed between the two side support frames (131) to enable the two side support frames (131) to move closer to or farther away from each other.

4. A bed with adjustable bed tension according to claim 3, characterized in that: The two side support frames (131) each include: A side beam frame (1311), a first plug rod (13111) on one end of the side beam frame (1311) is plugged into a first plug tube (111) on the first side end frame (11), and two ends of the foldable connecting rod assembly (132) are respectively installed between the two side beam frames (1311) to achieve the two side beam frames (1311) to move closer to or farther away from each other; The screw rod adjustment frame (1312) comprises: A connecting frame (13121), a second plug rod on one end of the connecting frame (13121) is plugged into a second plug tube (13112) on the other end of the side beam frame (1311), and a third plug rod (131211) on the other end of the connecting frame (13121) is plugged into a third plug tube (121) on the second side end frame (12); An adjusting screw (13122), the adjusting screw (13122) is passed through the longitudinal rod (131212) on the connecting frame (13121) and is threadedly connected to the threaded hole on the other end of the side beam frame (1311); a wrench action cap (13123) and a stop cap (13124) for screwing a first adjusting tool are fixed on the adjusting screw (13122); the wrench action cap (13123) and the stop cap (13124) are respectively stopped on two opposite sides of the longitudinal rod (131212); a first adjusting hole (1201) for inserting the first adjusting tool is provided at a position corresponding to the head of the adjusting screw (13122) on the second side end frame (12).

5. A bed with adjustable bed tension according to claim 4, characterized in that: A second adjustment hole (301) is provided on the tail support plate (3) at a position corresponding to the first adjustment hole (1201).

6. The bed with adjustable bed tension according to claim 4, characterized in that: The foldable connecting rod assembly (132) is two arranged at intervals, each comprising: two connecting rods (1321), a spring (1322), and two abutting rods (1323); one end of the two connecting rods (1321) is hinged to the two side beam frames (1311) respectively, and the other ends of the two connecting rods (1321) are hingedly connected; both ends of the spring (1322) are fixedly connected to the positions of the two connecting rods (1321) near their other ends; one end of the two abutting rods (1323) is fixedly connected to the positions of the two connecting rods (1321) near their other ends, and the other ends of the two abutting rods (1323) can abut against each other.

7. The bed with adjustable bed tension according to claim 5, characterized in that: A connecting piece (6) is fixed on each of the two side beam frames (1311), and the connecting piece (6) is hinged to one end of the connecting rod (1321), and also includes two retractable support rod assemblies (7) for preventing the two connecting rods (1321) from folding back. The two retractable support rod assemblies (7) form a group, and there are two groups. One end of the two retractable support rod assemblies (7) in one group is hinged to the second side end frame (12), and one end of the two retractable support rod assemblies (7) in the other group is hinged to the first side end frame (11), and the other ends of the two retractable support rod assemblies (7) in each group are respectively abutted against the corresponding two connecting pieces (6).

8. The bed with adjustable bed tension according to claim 7, characterized in that: A first mounting frame (112) is fixed on the frame opening of the first side end frame (11), and a second mounting frame (122) is detachably mounted on the frame opening of the second side end frame (12); the first mounting frame (112) and the second mounting frame (122) have the same structure; one end of two of the telescopic support rod assemblies (7) in one group are hinged to the first mounting frame (112), and one end of two of the telescopic support rod assemblies (7) in another group are hinged to the second mounting frame (122); and the two groups of telescopic support rod assemblies (7) have the same mounting structure as the first mounting frame (112) and the second mounting frame (122), respectively; The connecting member (6) is provided with a slot (601), and each of the telescopic support rod assemblies (7) comprises: A square rod (71) is installed, wherein the bottom end and the top end of the square rod (71) are respectively hinged to an upper beam rod (1221) and a lower beam rod (1222) on the second installation frame (122) via a pin shaft; A first plug-in rod (72), one end of the first plug-in rod (72) is closed and a bolt hole is provided on the end, a stop boss (721) is fixed on the outer wall of the first plug-in rod (72), one end of the first plug-in rod (72) is plugged into the installation square rod (71), and one side of the stop boss (721) abuts against one end of the installation square rod (71); A second plug-in rod (73), one end of the second plug-in rod (73) is closed and a threaded hole is provided on the end, one end of the second plug-in rod (73) is plugged into the first plug-in rod (72), and the other end of the second plug-in rod (73) is plugged into the slot (601); An adjusting bolt (74) passes through the bolt penetration hole and is threadedly connected to the threaded hole.

9. A bed with adjustable bed tension according to claim 8, characterized in that: The tail support plate (3) and the head support plate (4) are both provided with a third adjustment hole (302) for a second adjustment tool to extend into and screw the adjustment bolt (74).

10. A bed with adjustable bed tension according to any one of claims 1 to 9, characterized in that: Two first connecting square tubes (8) are fixed on one side of the head support plate (4), and a positioning hole (801) is opened on the tube wall of the first connecting square tube (8) near its upper tube opening. Two second connecting square tubes (9) are fixed on one side of the backrest plate (5), and a third connecting square tube (10) is fixed to the lower tube opening of the second connecting square tube (9), and also includes a U-shaped elastic sheet (14) built into the tube opening at one end of the third connecting square tube (10), and one end of the U-shaped elastic sheet (14) is connected to the third connecting square tube ( The U-shaped elastic sheet (14) is fixedly connected to the inner wall of one end of the pipe opening of the first connecting square tube (8), the other end of the U-shaped elastic sheet (14) is an elastic end, on which a latch (15) is fixed, the latch (15) extends out of a through hole (101) on one side of the pipe wall of the third connecting square tube (10), one end of the third connecting square tube (10) is plugged into the upper pipe opening of the first connecting square tube (8), the latch (15) is plugged into the positioning hole (801), and the first connecting square tube (8) and the second connecting square tube (9) are arranged at an angle α=90°-130°.

Images