A portable multi-purpose folding bed

Abstract

The present invention discloses a portable multi-purpose folding bed, comprising an upper cross bar, a lower cross bar, a left telescopic rod, a right telescopic rod, a left bottom frame, a right bottom frame, wheels, a left side frame, a right side frame, a left side rod, a right side rod and a side storage cross plate. Through the cooperation of a fork rod assembly, an upper cross bar, a lower cross bar, a left telescopic rod, a right telescopic rod, a left bottom frame, a right bottom frame, a left side frame, a right side rod and a right side rod, the folding bed can have a large carrying space when unfolded. In addition, a storage bag and a storage cross plate are provided, so that the carrying capacity of the folding bed is greatly increased, and the volume of the folded bed is not affected when folded, so that the folding bed is easy to store and carry. Moreover, the folding and unfolding of the folding bed can be realized by only applying a force to the left side frame and the right side frame, which is simple and convenient.

Description

Technical Field

[0001] The invention relates to a folding bed, in particular to a portable multi-purpose folding bed. Background Art

[0002] As people's quality of life continues to improve, they often need to go out for camping vacations in their spare time after work. When doing outdoor activities, you usually need to prepare a folding bed so that you can rest and sleep safely after the activities. However, the function of a folding bed is relatively simple. When the space of the vehicle for carrying outdoor activities is limited, and it usually takes a while to walk from the parking lot to the outdoor activity site, and the need to carry a heavy folding bed will indeed increase the physical exertion and difficulty of the play, so the usual folding bed becomes less usable.

[0003] How to enrich the functions of the folding bed and make it easy to tow is a technical problem that technicians in this field have always wanted to solve. Summary of the invention

[0004] The purpose of the present invention is to provide a portable multi-purpose folding bed to solve the above problems.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] The portable multi-purpose folding bed of the present invention comprises an upper crossbar, a lower crossbar, a left telescopic rod, a right telescopic rod, a left bottom frame, a right bottom frame, wheels, a left side frame, a right side frame, a left side rod, a right side rod and a side storage horizontal board;

[0007] The left end of the upper cross bar is hinged to the left frame, the right end of the upper cross bar is hinged to the right frame, the left end of the lower cross bar is hinged to the left bottom frame, and the right end of the lower cross bar is hinged to the right bottom frame. The left and right ends of the upper cross bar and the left and right ends of the lower cross bar are respectively provided with limiting connecting pieces at the hinges. The cross section of the limiting connecting piece is a door-shaped structure. The limiting connecting piece is respectively used to limit the expansion angle of the upper cross bar, the left frame and the right frame, and to limit the expansion angle of the lower cross bar, the left bottom frame and the right bottom frame.

[0008] The upper end of the left telescopic rod is hinged to the left end of the upper cross bar, the lower end of the left telescopic rod is hinged to the left end of the left bottom frame, the upper end of the right telescopic rod is hinged to the right end of the upper cross bar, the lower end of the right telescopic rod is hinged to the right end of the right bottom frame, and there are at least three wheels, which are respectively arranged on the bottom surface of the left bottom frame and the bottom surface of the right bottom frame;

[0009] The upper end of the left side rod is hinged to the middle part of the left frame, the lower end of the left side rod is hinged to the left end of the left bottom frame, the upper end of the right side rod is hinged to the middle part of the right frame, and the lower end of the right side rod is hinged to the right end of the right bottom frame;

[0010] The side storage horizontal plate is arranged on the left frame and the right frame.

[0011] Preferably, a plurality of fixing clips are provided below the side storage horizontal plate, and the side storage horizontal plate is clamped and installed on the left frame, the right frame and the upper cross bar by the fixing clips.

[0012] The portable multi-purpose folding bed of the present invention also includes a fork rod assembly, which is in an "X" shape, and the two ends of the left side of the fork rod assembly are respectively hinged to the left end of the upper cross bar and the left end of the lower cross bar, and the two ends of the right side of the fork rod assembly are respectively hinged to the right end of the upper cross bar and the right end of the lower cross bar.

[0013] The portable multi-purpose folding bed of the present invention is provided with a middle support rod, and the middle support rod comprises an outer sleeve, an inner tube, an L-shaped plate, a movable locking plate and a torsion spring;

[0014] One end of the outer sleeve is fixed to the upper cross bar, and the other end of the outer sleeve is fixed to the lower cross bar. The opening of the outer sleeve faces downward, and the inner tube is nested in the outer sleeve.

[0015] The L-shaped plate is fixedly arranged at the open end of the outer sleeve, the top wall of the L-shaped plate is provided with a connecting hole, one end of the movable locking plate is hinged to the lower end of the side wall of the L-shaped plate through the hinge shaft; a locking hole is provided in the middle of the movable locking plate, the diameter of the locking hole is larger than the diameter of the inner tube, and the lower end of the inner tube passes through the connecting hole and the locking hole in sequence;

[0016] The torsion spring is sleeved on the outer side of the hinge shaft, and the two ends of the torsion spring are respectively in contact with the outer side surface of the side wall of the L-shaped plate and the bottom surface of the movable locking plate.

[0017] The portable multi-purpose folding bed of the present invention is also provided with end support legs, which are of U-shaped structure, and both ends of the end support legs are hinged to the ends of the left bottom frame and the right bottom frame.

[0018] The portable multi-purpose folding bed of the present invention is further provided with a middle storage horizontal board, and the middle storage horizontal board is arranged on the upper cross bar;

[0019] The side storage horizontal board is made by splicing a plurality of horizontal boards.

[0020] The portable multi-purpose folding bed of the present invention is also provided with a folding backrest, a long connecting rod and a short connecting rod;

[0021] One end of the short connecting rod is hinged to both sides of one end of the folding backrest, and the other end of the short connecting rod is hinged to the proximal end of the horizontal plate of the side storage horizontal plate; a section of the long connecting rod is hinged to both sides of the proximal end of one end of the folding backrest, and the other end of the long connecting rod is hinged to the middle part of the horizontal plate of the side storage horizontal plate.

[0022] The portable multi-purpose folding bed of the present invention further comprises a storage bag and a loading horizontal board; the loading horizontal board is arranged on the left bottom frame and the right bottom frame;

[0023] The storage bag is made of canvas, and is provided with fixing ears at positions close to the upper cross bar, the left frame, the right frame, the left rod and the right rod. The upper cross bar, the left frame, the right frame, the left rod and the right rod pass through the corresponding fixing ears respectively.

[0024] Preferably, the right frame further includes a pull rod, and the pull rod is hinged to the right side surface of the right frame.

[0025] Preferably, the left bottom frame and the right bottom frame include a bottom frame body and a bearing crossbeam, both ends of the bearing crossbeam are hinged to the ends of the left bottom frame and the right bottom frame, and the wheels and the end support legs are arranged on the bearing crossbeam; the left bottom frame and the right bottom frame are provided with fixing clamps, and when the end support legs are folded, the fixing clamps clamp the end support legs.

[0026] The beneficial effects of the present invention are:

[0027] 1. Through the cooperation of the fork rod assembly, the upper cross bar, the lower cross bar, the left telescopic rod, the right telescopic rod, the left bottom frame, the right bottom frame, the left side frame, the right side frame, the left side rod and the right side rod, the folding bed can have a large cargo space when unfolded;

[0028] 2. It is equipped with storage bags and storage horizontal boards, which greatly increase the carrying capacity of the folding bed. When folding, it does not affect its volume after shrinking and folding, making it easy to store and carry;

[0029] 3. The folding bed can be folded and unfolded by simply applying force to the left and right frames, which is simple and convenient;

[0030] 4. It is equipped with a folding backrest, which adds the function of a backrest chair, making the function of the folding bed more abundant;

[0031] 5. Equipped with a middle support rod and end support legs, it is convenient for the folding bed to be fixed on uneven ground, increasing the safety and reliability of the folding bed;

[0032] 6. Easy to fold. One person only needs to lift the folding bed from the middle with one hand to complete the folding action. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings further illustrate the present invention, but the contents in the accompanying drawings do not constitute any limitation to the present invention.

[0034] Figure 1 It is a structural schematic diagram of one embodiment of the present invention;

[0035] Figure 2 is a three-dimensional schematic diagram of a folding backrest in one embodiment of the present invention when unfolded;

[0036] Figure 3 is a three-dimensional schematic diagram of a folding backrest in one embodiment of the present invention when it is collapsed;

[0037] Figure 4 is a schematic diagram of a contracted state of one embodiment of the present invention;

[0038] Figure 5 is a partial enlarged view of one embodiment of the present invention;

[0039] Figure 6 is a schematic diagram of the bottom of one embodiment of the present invention;

[0040] Figure 7 is a schematic diagram of a middle support rod of one embodiment of the present invention;

[0041] Figure 8 is a schematic diagram of a folding backrest according to one embodiment of the present invention;

[0042] Fig. 9 This is a schematic diagram of one embodiment of the present invention after adding a cushion.

[0043] In the accompanying drawings: upper cross bar 01, lower cross bar 02, limiting connector 011, left telescopic rod 03, right telescopic rod 04, left bottom frame 05, cargo loading cross plate 51, right bottom frame 06, load-bearing cross beam 061, wheel 07, left frame 08, side storage cross plate 81, fixing clip 82, middle storage cross plate 83, right frame 09, fork rod assembly 10, pull rod 11, left side rod 12, right side rod 13, storage bag 14, fixing ear 141, middle support rod 15, outer sleeve 151, inner tube 152, L-shaped plate 153, movable locking plate 154, torsion spring 155, end support leg 16, folding backrest 171, long connecting rod 172, short connecting rod 173, cushion 18. DETAILED DESCRIPTION

[0044] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods. It is worth noting that Figure 1 and Figure 4 The direction coordinates shown in and the direction words such as up, down, left, and right described in the present invention are only used to better explain the present invention, but are not used to limit the present invention.

[0045] Please refer to Figure 1-8 The present invention provides a folding bed, comprising an upper crossbar 01, a lower crossbar 02, a left telescopic rod 03, a right telescopic rod 04, a left bottom frame 05, a right bottom frame 06, wheels 07, a left side frame 08, a right side frame 09, a left side bar 12, a right side bar 13 and a side storage horizontal plate 81;

[0046] The left end of the upper cross bar 01 is hinged to the left frame 08, the right end of the upper cross bar 01 is hinged to the right frame 09, the left end of the lower cross bar 02 is hinged to the left bottom frame 05, and the right end of the lower cross bar 02 is hinged to the right bottom frame 06. The two ends of the upper cross bar 01 and the two ends of the lower cross bar 02 are respectively provided with limiting connecting members 011 at the hinges. The cross section of the limiting connecting member 011 is a door-shaped structure. The limiting connecting member 011 is used to limit the expansion angle of the upper cross bar 01, the left frame 08 and the right frame 09, and to limit the expansion angle of the lower cross bar 02, the left bottom frame 05 and the right bottom frame 06.

[0047] The upper end of the left telescopic rod 03 is hinged to the left end of the upper cross bar 01, the lower end of the left telescopic rod 03 is hinged to the left end of the left bottom frame 05, the upper end of the right telescopic rod 04 is hinged to the right end of the upper cross bar 01, the lower end of the right telescopic rod 04 is hinged to the right end of the right bottom frame 06, and there are at least three wheels 07, which are respectively arranged on the bottom surface of the left bottom frame 05 and the bottom surface of the right bottom frame 06;

[0048] The upper end of the left side rod 12 is hinged to the middle part of the left frame 08, the lower end of the left side rod 12 is hinged to the left end of the left bottom frame 05, the upper end of the right side rod 13 is hinged to the middle part of the right frame 09, and the lower end of the right side rod 13 is hinged to the right end of the right bottom frame 06; the side storage horizontal plate 81 is arranged on the left frame 08 and the right frame 09.

[0049] When the folding bed is unfolded, if the left frame 08, the left bottom frame 05, the right frame 09 and the right bottom frame 06 rotate at too large an angle, the folding bed will be deformed, affecting the use of the folding bed and even easily damaging the folding bed. In addition, when carrying heavy objects, the limit connector 011 can limit the rotation of the left frame 08, the left bottom frame 05, the right frame 09 and the right bottom frame 06, thereby increasing the carrying capacity of the folding bed.

[0050] By applying force to the left frame 08, the right frame 09 and the lower cross bar 02, the left frame 08 and the right frame 09 are rotated, which drives the left bottom frame 05 and the right bottom frame 06 to rotate, and changes the length of the left telescopic rod 03 and the right telescopic rod 04, so as to realize the contraction and expansion of the folding bed. The rotation of the left frame 08 and the right frame 09 can be carried out synchronously. During the rotation of the left frame 08 and the right frame 09, due to the change in the length of the left telescopic rod 03 and the right telescopic rod 04, the position of the upper cross bar 01 also changes according to the change in the length of the left telescopic rod 03 and the right telescopic rod 04.

[0051] like Figure 1 and Figure 2 As shown, when the folding bed is folded to unfolded, a horizontal upward force is applied to the left frame 08, and the left frame 08 rotates toward the side of the lower cross bar 02 with the hinge of the left frame 08 and the upper cross bar 01 as the center of the circle until the left frame 08 and the upper cross bar 01 are in the same horizontal plane, and the limit connector 011 limits the left frame 08, and self-locking is achieved through gravity and the limit connector 011.

[0052] Driven by the left frame 08, the left side rod 12 rotates toward the left telescopic rod 03 with the hinge between the left side rod 12 and the left frame 08 as the center, and the left telescopic rod 03 slowly shrinks from the longest state to the shortest state. A horizontal downward force is applied to the lower cross bar 02, so that the left bottom frame 05 rotates toward the upper cross bar 01 with the hinge between the left bottom frame 05 and the lower cross bar 02 as the center, until the left bottom frame 05 and the lower cross bar 02 are in the same horizontal plane, and the limit connector 011 limits the left bottom frame 05, and self-locking is achieved through gravity and the limit connector 011.

[0053] Similarly, a horizontal upward force is applied to the right side frame 09, and the right side frame 09 rotates toward the side of the lower cross bar 02 with the hinge between the right side frame 09 and the upper cross bar 01 as the center of the circle until the right side frame 09 and the upper cross bar 01 are in the same horizontal plane, and the limit connector 011 limits the right side frame 09, and self-locking is achieved through gravity and the limit connector 011.

[0054] Driven by the right frame 09, the right rod 13 rotates toward the right telescopic rod 04 with the hinge of the right rod 13 and the right frame 09 as the center, and the right telescopic rod 04 slowly shrinks from the longest state to the shortest state. A horizontal downward force is applied to the lower cross bar 02, so that the right bottom frame 06 rotates toward the upper cross bar 01 with the hinge of the right bottom frame 06 and the lower cross bar 02 as the center, until the right bottom frame 06 and the lower cross bar 02 are in the same horizontal plane, and the limit connector 011 limits the right bottom frame 06, and self-locking is achieved through gravity and the limit connector 011.

[0055] When the folding bed is fully unfolded, the "left frame 08-upper cross bar 01-right frame 09" form the top surface of the folding bed, the "left bottom frame 05-lower cross bar 02-right bottom frame 06" form the bottom surface of the folding bed, the wheels 07 are in contact with the ground, and the left rod 12 and the right rod 13 connect the top surface and the bottom surface of the folding bed. With the side storage horizontal board 81, you can rest and sleep on it. Of course, you can also add a cushion 18 (such as Fig. 9 A flexible cushion such as the one shown above will be more comfortable.

[0056] When the folding bed is unfolded to be retracted, a horizontal downward force can be applied to the left frame 08 and the right frame 09, and a horizontal upward force can be applied to the lower cross bar 02, so that the folding bed can be retracted. In addition, a rope can be tied around the middle of the upper cross bars 01 on both sides, and the rope can be pulled up by force to make the middle of the folding bed move upward, while the two ends of the folding bed remain in the same position due to inertia, so that the folding bed can be retracted (and the rope can also be tied around to fix the cushion 18 placed on the folding bed, so that it is not easy to slip due to the folding and transfer of the folding bed); when retracting, the left telescopic rod 03 and the right telescopic rod 04 are slowly retracted from the shortest state to the longest state, the left bottom frame 05 and the right bottom frame 06 are gradually rotated to the bottom of the lower cross bar 02, and the left rod 12, the right rod 13, the left frame 08 and the right frame 09 are reset to the state before unfolding.

[0057] Finally, the left rod 12 is parallel to the left telescopic rod 03, the right rod 13 is parallel to the right telescopic rod 04, the left frame 08 is close to the left rod 12, and the right frame 09 is close to the right rod 13. The structure of "left bottom frame 05-lower cross bar 02-right bottom frame 06" is an inverted "U" shape, forming a storage space, and the wheel 07 rotates with the left bottom frame 05 or the right bottom frame 06 and enters the above-mentioned storage space.

[0058] Specifically, a plurality of fixing clips 82 are provided below the side storage horizontal plate 81, and the side storage horizontal plate 81 is clamped and installed on the left frame 08, the right frame 09 and the upper crossbar 01 by the fixing clips 82. The side storage horizontal plate 81 is detachably connected to the left frame or the right frame by the clamping of the fixing clips 82. The detachable connection allows the side storage horizontal plate 81 to be installed at any position of the left frame 08 and the right frame 09, which can further enhance the storage capacity of the folding bed, improve the space utilization rate of the bed, and does not affect its volume after shrinking and folding. At the same time, the opening of the folding bed can also be covered to prevent the items in the folding bed from falling out due to bumps.

[0059] Specifically, the folding bed of this embodiment further includes a fork rod assembly 10, which is in an "X" shape, and the left ends of the fork rod assembly 10 are respectively hinged to the left end of the upper cross bar 01 and the left end of the lower cross bar 02. The right ends of the fork rod assembly 10 are respectively hinged to the right end of the upper cross bar 01 and the right end of the lower cross bar 02.

[0060] The fork rod assembly 10 connects and fixes the upper cross bar 01 and the lower cross bar 02. Since the "X"-shaped fork rod assembly 10 forms two triangular structures between the cross bar and the lower cross bar 02, the structure of the folding bed is very stable, forming a frame structure of "upper cross bar 01-fork rod assembly 10-lower cross bar 02".

[0061] In the process of contraction to expansion, the rotation of the left frame 08 and the right frame 09 causes the left telescopic rod 03 and the right telescopic rod 04 to slowly contract from the longest state to the shortest state, and when the position of the upper crossbar 01 gradually moves downward, the fork rod assembly 10 causes the lower crossbar 02 to move downward synchronously with the upper crossbar 01. Similarly, in the process of expansion to contraction, the fork rod assembly 10 causes the upper crossbar 01 and the lower crossbar 02 to move upward synchronously.

[0062] By providing the fork rod assembly 10, the upper crossbar 01 and the lower crossbar 02 can achieve synchronous displacement during the unfolding or contraction of the folding bed. As long as a force is applied to the left frame 08 and the right frame 09 to rotate the left frame 08 and the right frame 09, the overall folding and unfolding of the folding bed can be achieved, and no additional force needs to be applied to the lower crossbar 02, making the contraction and unfolding process faster and the folding bed more convenient to use. At the same time, when in use, the fork rod assembly 10 can also serve as a guardrail of the folding bed to prevent items in the folding bed from falling out due to bumps.

[0063] Specifically, the folding bed of this embodiment is also provided with a middle support rod 15 (such as Figure 7 As shown in the figure, the middle support rod 15 includes an outer sleeve 151, an inner tube 152, an L-shaped plate 153, a movable locking plate 154 and a torsion spring 155; one end of the outer sleeve 151 is fixed to the upper cross bar 01, and the other end of the outer sleeve 151 is fixed to the lower cross bar 02, the opening of the outer sleeve 151 faces downward, and the inner tube 152 is nested in the outer sleeve 151; the L-shaped plate 153 is fixedly arranged at the open end of the outer sleeve 151, and the top wall of the L-shaped plate 153 is provided with a connecting hole, One end of the movable locking plate 154 is hinged to the lower end of the side wall of the L-shaped plate 11 through the hinge shaft; a locking hole is provided in the middle of the movable locking plate 154, the diameter of the locking hole is larger than the diameter of the inner tube 152, and the lower end of the inner tube 152 passes through the connecting hole and the locking hole in sequence; the torsion spring 155 is sleeved on the outside of the hinge shaft, and the two ends of the torsion spring 155 are respectively abutted against the outer side surface of the side wall of the L-shaped plate 153 and the bottom surface of the movable locking plate 154.

[0064] When the folding bed of the present embodiment is unfolded, the inner tube 152 of the middle support rod 15 is extended to support and stabilize the bed body, so that the bed body can be fixed on an uneven ground; the inner tube 152 of the middle support rod 15 is locked and controlled by the movable locking plate 154. When the lock needs to be released, it can be released by pressing the movable locking plate 154. When the lower pressure is cancelled, the elastic force of the torsion spring 155 keeps the movable locking plate 154 locked to the inner tube 152; preferably, the proximal end of the inner tube 152 is provided with an anti-slip concave-convex texture.

[0065] Preferably, the folding bed of this embodiment is also provided with end support legs 16 (such as Figure 6 As shown in the figure, the end support legs 16 are U-shaped structures, and the two ends of the end support legs 16 are hinged to the ends of the left bottom frame 05 and the right bottom frame 06. When the folding bed needs to be moved, the end support legs 16 are in a retracted and folded state. When the folding bed needs to be fixed, the end support legs 16 can be unfolded, so that the folding bed can be supported and stabilized.

[0066] Preferably, the folding bed of this embodiment is further provided with a middle storage horizontal board 83, and the middle storage horizontal board 83 is arranged on the upper cross bar 01; adding the middle storage horizontal board 83 can make the bed surface flatter and more comfortable when lying down.

[0067] Preferably, the side storage horizontal board 81 is made of multiple horizontal boards; the folding bed is also provided with a folding backrest 171, a long connecting rod 172, a short connecting rod 173 (such as Figure 2 , 3 , 8); one end of the short connecting rod 173 is hinged to both sides of one end of the folding backrest 171, and the other end of the short connecting rod 173 is hinged to the proximal end of the horizontal plate of the side storage horizontal plate 81; a section of the long connecting rod 172 is hinged to both sides of the proximal end of one end of the folding backrest 171, and the other end of the long connecting rod 172 is hinged to the middle of the horizontal plate of the side storage horizontal plate 81.

[0068] The folding backrest 171 can make the folding bed of this embodiment have the function of a backrest chair. When the folding backrest 171 is unfolded, it becomes a backrest chair; and when the folding backrest 171 is retracted, the relatively flat side storage horizontal board 81 can be used as a bed surface for sleeping.

[0069] Please refer to Figure 1Specifically, a loading cross plate 51 is fixedly connected to the left bottom frame 05 and the right bottom frame 06. The left bottom frame 05 and the right bottom frame 06 have the same structure and are symmetrically arranged at the two ends of the lower cross bar 02, forming a "U" shape. The loading cross plate 51 is respectively arranged on the left bottom frame 05 and the right bottom frame 06. The two ends of the loading cross plate 51 are fixedly connected to the left bottom frame 05 or the right bottom frame 06, providing a platform for placing articles, so that the folding bed can carry articles in the unfolded state.

[0070] Preferably, the folding bed further comprises a storage bag 14, which is made of canvas. When the folding bed is unfolded, the storage bag 14 forms a storage space inside the folding bed. The storage bag 14 is provided with a plurality of fixing ears 141 at positions close to the upper crossbar 01, the left frame 08, the right frame 09, the left rod 12 and the right rod 13. The upper crossbar 01, the left frame 08, the right frame 09, the left rod 12 and the right rod 13 respectively pass through the corresponding fixing ears 141, so that the storage bag 14 can be firmly fixed on the folding bed. The storage bag 14 can not only store small items in the folding bed, but also does not affect its storage area and weight after shrinking and folding.

[0071] Further, the right side frame 09 further comprises a pull rod 11, and the pull rod 11 is hinged to the right side of the right side frame 09. When in use, the pull rod 11 can more easily control the direction of the folding bed, which is suitable for users of different heights and hand lengths.

[0072] Preferably, the left bottom frame 05 and the right bottom frame 06 include a bottom frame body and a bearing beam 061, both ends of the bearing beam 061 are hinged to the ends of the left bottom frame and the right bottom frame, and the wheels 07 and the end support legs 16 are arranged on the bearing beam 061; the left bottom frame and the right bottom frame are provided with fixing clamps 82, and when the end support legs 16 are folded, the fixing clamps 82 clamp the end support legs.

[0073] With such arrangement, the wheels 07 and the end support legs 16 can be folded, so that the end support legs 16 can have a larger adjustment angle while ensuring contact with the ground, and cooperate with the middle support rod 15 to achieve the best load-bearing and stability effect; in addition, the bottom frame is provided with a fixing clip 82, which is convenient for the folding bed to be unfolded and transferred without affecting the work due to the end support legs 16 falling down.

[0074] Preferably, the wheel 07 is a universal wheel. The universal wheel makes it easier to control the direction of the folding bed when in use, which is more convenient.

[0075] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific embodiments of the present invention without creative work, and these equivalent variations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A portable multi-purpose folding bed, characterized in that: It includes an upper cross bar, a lower cross bar, a left telescopic rod, a right telescopic rod, a left bottom frame, a right bottom frame, wheels, a left side frame, a right side frame, a left side rod, a right side rod and a side storage horizontal plate; The left end of the upper cross bar is hinged to the left frame, the right end of the upper cross bar is hinged to the right frame, the left end of the lower cross bar is hinged to the left bottom frame, and the right end of the lower cross bar is hinged to the right bottom frame. The left and right ends of the upper cross bar and the left and right ends of the lower cross bar are respectively provided with limiting connecting pieces at the hinges. The cross section of the limiting connecting piece is a door-shaped structure. The limiting connecting piece is respectively used to limit the expansion angle of the upper cross bar, the left frame and the right frame, and to limit the expansion angle of the lower cross bar, the left bottom frame and the right bottom frame. The upper end of the left telescopic rod is hinged to the left end of the upper cross bar, the lower end of the left telescopic rod is hinged to the left end of the left bottom frame, the upper end of the right telescopic rod is hinged to the right end of the upper cross bar, the lower end of the right telescopic rod is hinged to the right end of the right bottom frame, and there are at least three wheels, which are respectively arranged on the bottom surface of the left bottom frame and the bottom surface of the right bottom frame; The upper end of the left side rod is hinged to the middle part of the left frame, the lower end of the left side rod is hinged to the left end of the left bottom frame, the upper end of the right side rod is hinged to the middle part of the right frame, and the lower end of the right side rod is hinged to the right end of the right bottom frame; The side storage horizontal plate is arranged on the left frame and the right frame.

2. The portable multi-purpose folding bed according to claim 1, characterized in that: A plurality of fixing clips are arranged below the side storage horizontal plate, and the side storage horizontal plate is clamped and installed on the left frame, the right frame and the upper cross bar by the fixing clips.

3. The portable multi-purpose folding bed according to claim 1, characterized in that: It also includes a fork rod assembly, which is in an "X" shape, and the two ends of the left side of the fork rod assembly are respectively hinged to the left end of the upper cross bar and the left end of the lower cross bar, and the two ends of the right side of the fork rod assembly are respectively hinged to the right end of the upper cross bar and the right end of the lower cross bar.

4. The portable multi-purpose folding bed according to claim 1, characterized in that: A middle support rod is provided, and the middle support rod comprises an outer sleeve, an inner tube, an L-shaped plate, a movable locking plate and a torsion spring; One end of the outer sleeve is fixed to the upper cross bar, and the other end of the outer sleeve is fixed to the lower cross bar. The opening of the outer sleeve faces downward, and the inner tube is nested in the outer sleeve. The L-shaped plate is fixedly arranged at the open end of the outer sleeve, the top wall of the L-shaped plate is provided with a connecting hole, one end of the movable locking plate is hinged to the lower end of the side wall of the L-shaped plate through a hinge shaft; a locking hole is provided in the middle of the movable locking plate, the diameter of the locking hole is larger than the diameter of the inner tube, and the lower end of the inner tube passes through the connecting hole and the locking hole in sequence; The torsion spring is sleeved on the outer side of the hinge shaft, and the two ends of the torsion spring are respectively in contact with the outer side surface of the side wall of the L-shaped plate and the bottom surface of the movable locking plate.

5. The portable multi-purpose folding bed according to claim 1, characterized in that: An end support leg is also provided, and the end support leg is a U-shaped structure, and both ends of the end support leg are hinged to the ends of the left bottom frame and the right bottom frame.

6. The portable multi-purpose folding bed according to claim 1, characterized in that: A middle storage horizontal plate is also provided, and the middle storage horizontal plate is provided on the upper cross bar; The side storage horizontal board is made by splicing a plurality of horizontal boards.

7. The portable multi-purpose folding bed according to claim 6, characterized in that: A folding backrest, a long connecting rod and a short connecting rod are also provided; One end of the short connecting rod is hinged to both sides of one end of the folding backrest, and the other end of the short connecting rod is hinged to the proximal end of the horizontal plate of the side storage horizontal plate; a section of the long connecting rod is hinged to both sides of the proximal end of one end of the folding backrest, and the other end of the long connecting rod is hinged to the middle part of the horizontal plate of the side storage horizontal plate.

8. The portable multi-purpose folding bed according to claim 1, characterized in that: It also includes a storage bag and a loading horizontal board; the loading horizontal board is arranged on the left bottom frame and the right bottom frame; The storage bag is made of canvas, and is provided with fixing ears at positions close to the upper cross bar, the left frame, the right frame, the left rod and the right rod. The upper cross bar, the left frame, the right frame, the left rod and the right rod pass through the corresponding fixing ears respectively.

9. The portable multi-purpose folding bed according to claim 1, characterized in that: The right frame also includes a pull rod, which is hinged to the right side of the right frame.

10. The portable multi-purpose folding bed according to claim 5, characterized in that: The left bottom frame and the right bottom frame include a bottom frame body and a bearing crossbeam, the two ends of the bearing crossbeam are hinged to the ends of the left bottom frame and the right bottom frame, and the wheels and the end support legs are arranged on the bearing crossbeam; The left bottom frame and the right bottom frame are provided with fixing clamps, and when the end support legs are folded, the fixing clamps clamp the end support legs.

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