A folding bed

Abstract

The present invention relates to the technical field of folding beds, and discloses a folding bed, comprising: a fixed frame; a movable frame; a first bed board, wherein the first bed board is fixed on the top of the movable frame; a second bed board; a third bed board; a driving mechanism, wherein the driving mechanism is arranged on the fixed frame and used to drive the movable frame to translate left and right relative to the fixed frame; a bed board lifting mechanism, wherein the bed board lifting mechanism is arranged on the fixed frame and used to drive the second bed board to move up and down relative to the fixed frame; a flipping mechanism, wherein the flipping mechanism is arranged on the fixed frame and used to drive the third bed board to rotate around the fixed frame; when the folding bed is in an unfolded state, the first bed board, the second bed board and the third bed board are sequentially assembled with each other on the same plane; when the folding bed is in a folded state, the third bed board, the second bed board and the first bed board are stacked sequentially from top to bottom.

Description

Technical Field

[0001] The present invention relates to the technical field of folding beds, in particular to a folding bed. Background Art

[0002] A folding bed is a simple bed that can be folded and stored in various ways. It is widely used in places such as homes or offices because of its convenience in use and storage. However, when placed in an office, the folding bed takes up a large space and has poor aesthetics. Therefore, a hidden folding bed is currently provided in a locker, which has the advantages of being convenient to use and having good aesthetics, such as a multifunctional folding bed with announcement number CN209807756U, a cabinet with a folding bed with announcement number CN209915423U, an intelligent companion folding bed with announcement number CN108851723A, and a cabinet with a folding bed with announcement number CN209474173U. However, the folding beds in the above lockers need to be manually unfolded or folded, and the operation is relatively cumbersome; at the same time, the folding bed takes up a large space inside the locker, which reduces the storage space of the locker for other items. Summary of the invention

[0003] The purpose of the present invention is to provide a folding bed which is easy and convenient to operate and has a small size and can be arranged in a storage cabinet to occupy a small space.

[0004] In order to achieve the above object, the present invention provides a folding bed, comprising:

[0005] Fixed frame;

[0006] Mobile racks;

[0007] a first bed board, wherein the first bed board is fixed on the top of the movable frame;

[0008] Second bed board;

[0009] The third bed board;

[0010] A driving mechanism, the driving mechanism is arranged on the fixed frame and is used to drive the movable frame to translate left and right relative to the fixed frame;

[0011] A bed board lifting mechanism, which is arranged on the fixing frame and is used to drive the second bed board to move up and down relative to the fixing frame;

[0012] A turning mechanism, which is arranged on the fixing frame and is used to drive the third bed board to rotate around the fixing frame;

[0013] When the folding bed is in an unfolded state, the first bed board, the second bed board and the third bed board are sequentially assembled on the same plane; when the folding bed is in a folded state, the third bed board, the second bed board and the first bed board are sequentially stacked from top to bottom.

[0014] As a preferred solution, the bed board lifting mechanism comprises a first moving rod and a second moving rod, a first hinge rod, a second hinge rod, a third hinge rod and a fourth hinge rod which are arranged relatively spaced apart;

[0015] The first moving rod and the second moving rod are relatively moved closer or farther away via a first telescopic device;

[0016] The first end of the first hinged rod is hinged to the first end of the second hinged rod through a first hinged shaft, the second end of the first hinged rod is hinged to the second bed board, the second end of the second hinged rod is hinged to the fixed frame, and the first hinged rod is fixedly connected to the first moving rod;

[0017] The first end of the third hinged rod is hinged to the first end of the fourth hinged rod through the second hinged shaft, the second end of the third hinged rod is hinged to the second bed board, the second end of the fourth hinged rod is hinged to the fixed frame, and the third hinged rod is fixedly connected to the second moving rod;

[0018] Wherein, the angle opening between the first moving rod and the second moving rod is opposite to the angle opening between the third hinge rod and the fourth hinge rod.

[0019] As a preferred embodiment, the number of the first articulated rods is two, the number of the second articulated rods is two, the number of the third articulated rods is two, and the number of the fourth articulated rods is two; the two first articulated rods and the two second articulated rods are respectively hinged and located at both ends of the first moving rod, and the two third articulated rods and the two fourth articulated rods are respectively hinged and located at both ends of the second moving rod.

[0020] As a preferred solution, the movement tracks of the first moving rod and the second moving rod are located on the same horizontal plane.

[0021] As a preferred solution, the flipping mechanism includes a first gear, a second gear, and a flipping motor fixed on the fixing frame;

[0022] The first gear is sleeved on the power output end of the flip motor, the second gear is fixedly connected to the third bed board via a connecting shaft, and the first gear is meshed with the second gear for transmission.

[0023] As a preferred solution, the driving mechanism includes a first screw seat and a second screw seat fixed on the fixing frame, a screw, and a nut sleeved on the screw;

[0024] The first screw seat and the second screw seat are arranged relatively spaced apart, one end of the screw is rotatably arranged on the first screw seat, and the other end of the screw is rotatably arranged on the second screw seat, and the movable frame is fixedly connected to the nut.

[0025] As a preferred solution, it also includes a wheel group lifting mechanism, which includes a walking wheel group for driving the fixed frame to translate, a first hinge, a second hinge, and a third moving rod and a fourth moving rod that are relatively spaced apart;

[0026] The third moving rod and the fourth moving rod are relatively moved closer or farther away via the second telescopic device;

[0027] One end of the first hinge is hinged to the fixed frame, the other end of the first hinge is connected to the walking wheel set, and the first hinge is fixedly connected to the third moving rod;

[0028] One end of the second hinge is hinged to the fixing frame, the other end of the second hinge is connected to the walking wheel set, and the second hinge is fixedly connected to the fourth moving rod.

[0029] As a preferred solution, the number of the first hinges is two, and the number of the second hinges is two; the two first hinges are respectively arranged at two ends of the third moving rod, and the two second hinges are respectively arranged at two ends of the fourth moving rod.

[0030] As a preferred solution, the first hinge member includes a first hinge plate and a second hinge plate; the second hinge member includes a third hinge plate and a fourth hinge plate;

[0031] The first end of the first hinged plate is hinged to the first end of the second hinged plate through a third hinge shaft, the second end of the first hinged plate is hinged to the walking wheel set, the second end of the second hinged plate is hinged to the fixing frame, and the second hinged plate is fixedly connected to the third moving rod;

[0032] The first end of the third hinged plate is hinged to the first end of the fourth hinged plate through a fourth hinge shaft, the second end of the third hinged plate is hinged to the walking wheel set, the second end of the fourth hinged plate is hinged to the fixed frame, and the fourth hinged plate is fixedly connected to the fourth moving rod.

[0033] As a preferred solution, the movement tracks of the third movement rod and the fourth movement rod are located on the same horizontal plane.

[0034] Compared with the prior art, the folding bed of the embodiment of the present invention has the following beneficial effects:

[0035] The folding bed of the embodiment of the present invention comprises a fixed frame, a movable frame, a first bed board, a second bed board and a third bed board. The fixed frame is fixed on the ground statically to play a positioning and supporting role. The first bed board is arranged on the movable frame. The movable frame is translated left and right relative to the fixed frame by a driving mechanism. The second bed board is lifted up and down relative to the fixed frame by a bed board lifting mechanism. The third bed board is rotated relative to the fixed frame by a flipping mechanism. When the folding bed is in an unfolded state, the first bed board, the second bed board and the third bed board are sequentially spliced ​​on the same plane by automatic control. The process does not require manual labor, which is labor-saving and convenient. When the folding bed is in a folded state, the third bed board, the second bed board and the first bed board are stacked from top to bottom by automatic control. The overall structure is compact and orderly, and the volume is small. The folded folding bed is stored in a storage cabinet and occupies less space. The folding bed of the present invention uses a driving mechanism, a bed board lifting mechanism and a flipping mechanism to intelligently control the unfolding or folding of the folding bed. The folding is intelligent and convenient, avoiding manual folding of the folding bed, and is convenient for the use of the elderly or children. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a structural schematic diagram of a folding bed in a folded state according to an embodiment of the present invention;

[0037] Figure 2 is a structural schematic diagram of a folding bed in an unfolded state according to an embodiment of the present invention;

[0038] Figure 3 yes Figure 2 A front view of

[0039] Figure 4 is a schematic structural diagram of a fixing frame according to an embodiment of the present invention;

[0040] Figure 5 is a schematic structural diagram of a mobile rack according to an embodiment of the present invention;

[0041] Figure 6 is another structural schematic diagram of a mobile rack according to an embodiment of the present invention;

[0042] Figure 7 is a schematic structural diagram of a fixed frame, a movable frame and a driving mechanism according to an embodiment of the present invention;

[0043] Figure 8 It is a schematic diagram of the structure of a moving frame, a first linear slide rail and a second linear slide rail according to an embodiment of the present invention;

[0044] Fig. 9 It is a structural schematic diagram of a fixing frame and a bed board lifting mechanism according to an embodiment of the present invention;

[0045] Fig.10 is a schematic structural diagram of a fixing frame and a bed board lifting mechanism in another viewing angle according to an embodiment of the present invention;

[0046] Fig.11 is a schematic structural diagram of a fixing frame and a flipping mechanism according to an embodiment of the present invention;

[0047] Fig.12 It is a schematic structural diagram of a fixed frame, a wheel assembly lifting mechanism and a traveling wheel assembly according to an embodiment of the present invention;

[0048] Fig.13 It is a structural schematic diagram of a wheel assembly lifting mechanism and a traveling wheel assembly according to an embodiment of the present invention;

[0049] In the figure, 1 is a driving mechanism, 11 is a first screw seat, 12 is a second screw seat, 13 is a screw, and 14 is a nut;

[0050] 2-bed lifting mechanism, 21-first moving rod, 22-second moving rod, 23-first hinged rod, 24-second hinged rod, 25-third hinged rod, 26-fourth hinged rod, 27-first telescopic device, 28-first hinge shaft, 29-second hinge shaft;

[0051] 3 - flip mechanism, 31 - first gear, 32 - second gear, 33 - flip motor, 34 - connecting shaft, 35 - intermediate gear;

[0052] 4 - wheel assembly lifting mechanism, 41 - first hinged member, 411 - first hinged plate, 412 - second hinged plate, 413 - third hinged shaft, 42 - second hinged member, 421 - third hinged plate, 422 - fourth hinged plate, 423 - fourth hinged shaft, 43 - third moving rod, 44 - fourth moving rod, 45 - second telescopic device;

[0053] 5 - walking wheel set, 51 - wheel frame, 52 - rotating shaft, 53 - bottom wheel, 54 - second roller;

[0054] 50 - fixed frame, 501 - first vertical sub-frame, 502 - second vertical sub-frame, 503 - first cross bar, 504 - second cross bar;

[0055] 60 - mobile frame, 601 - vertical frame, 602 - horizontal frame, 603 - connecting rod, 604 - baffle, 605 - rotating motor;

[0056] 70 - first bed board; 71 - second bed board; 72 - third bed board;

[0057] 81 - first linear guide rail, 811 - first slider, 82 - first guide rail mounting seat;

[0058] 83 - second linear guide rail, 831 - second slide block, 84 - second guide rail mounting seat;

[0059] 85 – third crossbar;

[0060] 90 - First roller. DETAILED DESCRIPTION

[0061] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0062] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0063] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0064] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0066] like Figures 1 to 3 As shown, a folding bed of a preferred embodiment of the present invention comprises a fixed frame 50, a movable frame 60, a first bed board 70, a second bed board 71, a third bed board 72, a driving mechanism 1, a bed board lifting mechanism 2 and a turning mechanism 3. Among them, the first bed board 70 is fixed on the top of the movable frame 60; the driving mechanism 1 is arranged on the fixed frame 50 and is used to drive the movable frame 60 to translate left and right relative to the fixed frame 50; the bed board lifting mechanism 2 is arranged on the fixed frame 50 and is used to drive the second bed board 71 to move up and down relative to the fixed frame 50; the turning mechanism 3 is arranged on the fixed frame 50 and is used to drive the third bed board 72 to rotate around the fixed frame 50. When the folding bed is in the unfolded state, the first bed board 70, the second bed board 71 and the third bed board 72 are sequentially assembled on the same plane; when the folding bed is in the folded state, the third bed board 72, the second bed board 71 and the first bed board 70 are stacked from top to bottom.

[0067] Based on the above technical solution, the fixed frame 50 is used to support the ground for positioning and fixing. The driving mechanism 1 controls the left and right displacement of the first bed board 70 relative to the fixed frame 50, the bed board lifting mechanism 2 controls the up and down displacement of the second bed board 71 relative to the fixed frame 50, and the flipping mechanism 3 controls the rotation of the third bed board 72 relative to the fixed frame 50, so that the first bed board 70, the second bed board 71 and the third bed board 72 are sequentially assembled on the same plane in an unfolded and loaded state or stacked in sequence in a folded state. Intelligent control can facilitate users to use it easily and avoid the trouble of manual operation. At the same time, the folding bed has a compact structure and a small overall volume, and can be accommodated in a storage cabinet and occupies a small space.

[0068] refer to Figure 4The fixed frame 50 includes a first vertical sub-frame 501, a second vertical sub-frame 502, a first cross bar 503 and a second cross bar 504. In order to improve the structural strength of the first vertical sub-frame 501 and the second vertical sub-frame 502, the first vertical sub-frame 501 and the second vertical sub-frame 502 are both a plurality of metal pipes (such as stainless steel pipes or alloy steel pipes) welded end to end into an integrally formed component, and the first vertical sub-frame 501 and the second vertical sub-frame 502 have the same structural dimensions, and the first vertical sub-frame 501 and the second vertical sub-frame 502 are relatively spaced apart and arranged in parallel at a certain distance. In order to fix the spacing between the first vertical sub-frame 501 and the second vertical sub-frame 502, one end of the first crossbar 503 is fixedly connected to the first vertical sub-frame 501, and the other end of the first crossbar 503 is fixedly connected to the second vertical sub-frame 502; one end of the second crossbar 504 is fixedly connected to the first vertical sub-frame 501, and the other end of the second crossbar 504 is fixedly connected to the second vertical sub-frame 502; and the first crossbar 503 and the second crossbar 504 are relatively spaced and arranged in parallel. In order to further improve the overall strength of the fixed frame 50, the first crossbar 503 and the second crossbar 504 are both metal pipes, and preferably use welding technology to form an integrally formed component with the first vertical sub-frame 501 and the second vertical sub-frame 502 respectively.

[0069] refer to Figure 5 , the mobile frame 60 includes a vertical frame 601 and a horizontal frame 602 connected to each other, and two connecting rods 603 arranged at a relative interval. Among them, in order to improve the structural strength of the vertical frame 601 and the horizontal frame 602, the vertical frame 601 and the horizontal frame 602 are a plurality of metal pipes (such as stainless steel pipes or alloy steel pipes) welded end to end into a square frame-shaped integral piece, and the vertical frame 601 is connected to one side of the horizontal frame 602 by welding or threading, and the angle between the vertical frame 601 and the horizontal frame 602 is a right angle. The first bed plate 70 is fixed to the top of the horizontal frame 602 by threading; in order to reduce the friction force of the mobile frame 60 moving left and right, the bottom of the vertical frame 601 is provided with a first roller 90, and the number of rollers is preferably two, and the two first rollers 90 are arranged at a relative interval at the bottom of the vertical frame 601. Further, one end of each connecting rod 603 is fixedly connected to the vertical frame 601, and the connecting rod 603 is located in the vertical projection of the horizontal frame 602. Furthermore, since the folding bed can be set in the storage space of the locker, the vertical frame 601 is connected with a baffle 604 on the side facing away from the connecting rod 603. The shape and size of the baffle 604 match the opening of the storage space of the locker, so that when the folding bed is set in the locker, the baffle 604 can cover the folding bed and improve the aesthetics.

[0070] In some embodiments, reference Figure 6A rotating motor 605 is also provided on the vertical frame 601. The rotating motor 605 and the baffle 604 are driven to rotate around the vertical frame 601 through a gear meshing transmission method. When the folding bed is in the unfolded state, the baffle 604 and the first bed board 70 are located on the same plane, which can increase the use area of ​​the folding bed.

[0071] refer to Figures 5 to 8 The driving mechanism 1 includes a first screw seat 11, a second screw seat 12, a screw 13, and a nut 14 sleeved on the screw 13. The first screw seat 11 is fixed to the middle of the side of the first cross bar 503, the second screw seat 12 is fixed to the middle of the side of the second cross bar 504, one end of the screw 13 is rotatably set on the first screw seat 11, and the other end of the screw 13 is rotatably set on the second screw seat 12, and the nut 14 is fixedly connected to the two connecting rods 603 respectively. Further, since the ground is horizontal when the folding bed is used in the office, the mobile frame 60 translates left and right on the horizontal ground, so the screw 13 is horizontally set. As a preferred solution, the screw 13 and the two connecting rods 603 are located on the same horizontal plane, and the screw 13 is located between the two connecting rods 603, so that the driving mechanism 1 is more compact in structure.

[0072] It should be noted that the first screw seat 11, the second screw seat 12, the screw 13 and the nut 14 sleeved on the screw 13 in the driving mechanism 1 together constitute the screw pair structure in the prior art, and the rotational motion of the nut 14 driven by the driving motor is converted into linear motion, so the specific installation structure and motion principle of the driving mechanism 1 are omitted. The linear motion of the connecting rod 603 is driven by the rotational motion of the nut 14 to push the moving frame 60 to move horizontally left and right; at the same time, the screw pair 13 has a self-locking limit function, and when the driving motor stops working, the moving frame 60 is stationary.

[0073] It should be noted that the drive mechanism 1 of the present invention is not limited to the above-mentioned screw pair structure. The drive mechanism 1 can also be a linear drive device such as a linear module, a motor-driven gear rack, a motor-driven chain, a motor-driven belt, a cylinder or a hydraulic cylinder, and the description is omitted for this reason.

[0074] refer to Figure 7 , 8Since the driving mechanism 1 drives the moving frame 60 to move as a whole by pushing the movement of the vertical frame 601, and the vertical frame 601 is arranged on one side of the horizontal frame 602, so that the other side of the horizontal frame 602 is suspended, and the horizontal frame 602 will shake when the moving frame 60 moves as a whole. Therefore, in order to improve the stability of the movement of the horizontal frame 602, a first linear guide 81 is arranged on the top of the first vertical sub-frame 501, and a second linear guide 83 is arranged on the top of the second vertical sub-frame 502. The first linear guide 81 and the second linear guide 83 are located on the same horizontal plane and are parallel to each other. The length direction of the first linear guide 81 is the same as the axial direction of the lead screw 13; a first slider 811 is slidably provided on the first linear guide 81, and a second slider 831 is slidably provided on the second linear guide 83. The first slider 811 is connected to the second slider 831 through a third cross bar 85, and the third cross bar 85 is fixedly connected to the horizontal frame 602. Specifically, a first guide rail mounting seat 82 is provided at the top of the first vertical sub-frame 501, and the first linear guide rail 81 is fixed on the first guide rail mounting seat 82; a second guide rail mounting seat 84 is provided at the top of the second vertical sub-frame 502, and the second linear guide rail 83 is fixed on the second guide rail mounting seat 84. Preferably, the third cross bar 85 is provided at the bottom of the side of the horizontal frame 602 away from the vertical frame 601, and the vertical frame 601 and the first cross bar 503 simultaneously bear the gravity load of the first bed board 70 and the user, thereby improving the load-bearing capacity of the horizontal frame 602; at the same time, when the driving mechanism 1 drives the vertical frame 601 to move, the horizontal frame 602 moves linearly on the first linear guide rail 81 and the second linear guide rail 83, thereby improving the movement stability of the mobile frame 60.

[0075] refer to Fig. 9 , 10The bed board lifting mechanism 2 includes a first moving rod 21, a second moving rod 22 and a hinge assembly, and the hinge assembly includes a first hinge rod 23, a second hinge rod 24, a third hinge rod 25 and a fourth hinge rod 26. Among them, the first moving rod 21 and the second moving rod 22 are relatively spaced and arranged in parallel, and the first moving rod 21 and the second moving rod 22 are relatively close to or far away from each other through the first telescopic device 27; the first end of the first hinged rod 23 is hinged to the first end of the second hinged rod 24 through the first hinge shaft 28, the second end of the first hinged rod 23 is hinged to the second bed board 71, the second end of the second hinged rod 24 is hinged to the fixed frame 50, and the first hinged rod 23 is fixedly connected to the first moving rod 21; the first end of the third hinged rod 25 is hinged to the first end of the fourth hinged rod 26 through the second hinge shaft 29, the second end of the third hinged rod 25 is hinged to the second bed board 71, the second end of the fourth hinged rod 26 is hinged to the fixed frame 50, and the third hinged rod 25 is fixedly connected to the second moving rod 22; the angle opening between the first moving rod 21 and the second moving rod 22 is opposite to the angle opening between the third hinged rod 25 and the fourth hinged rod 26. It should be noted that the hinge structures at various locations are conventional structures in the prior art, and are generally implemented using pins, so the description is omitted. The first telescopic device 27 is a cylinder or a hydraulic cylinder, wherein the cylinder or hydraulic cylinder is a conventional structure in the prior art, and the cylinder or hydraulic cylinder includes a cylinder body and a piston rod that reciprocates and telescopes in the cylinder body, the extended end of the piston rod is fixedly connected to the first moving rod 21, and the bottom of the cylinder body is fixedly connected to the second moving rod 22, and the relative movement between the first moving rod 21 and the second moving rod 22 is completed by the relative movement of the piston rod and the cylinder body.

[0076] Generally, folding beds are horizontal after being unfolded. Therefore, the first bed board 70, the second bed board 71 and the third bed board 72 of the folding bed of the present invention are located in the same horizontal plane after being unfolded, and the second bed board 71 needs to be in a horizontal state during the lifting process. In order to ensure that the second bed board 71 is in a horizontal state during the lifting process, the first moving rod 21 and the second moving rod 22 are respectively arranged horizontally, and the moving tracks of the first moving rod 21 and the second moving rod 22 are located in the same horizontal plane. The lifting and lowering of the second bed board 71 is controlled by the relative movement of the first moving rod 21 and the second moving rod 22 in the same horizontal plane. Furthermore, the axial direction of the first hinge shaft 28 is parallel to the length direction of the first moving rod 21, and the axial direction of the second hinge shaft 29 is parallel to the length direction of the second moving rod 22, so that when the first moving rod 21 and the second moving rod 22 move relative to each other, it is ensured that the first hinge rod 23 and the second hinge rod 24 rotate smoothly around the first hinge shaft 28, and the third hinge rod 25 and the fourth hinge rod 26 rotate smoothly around the second hinge shaft 29.

[0077] In order to improve the stability of the lifting and lowering of the second bed board 71, there are two hinged assemblies, which are respectively arranged on the first vertical sub-frame 501 and the second vertical sub-frame 502. At the same time, the first telescopic device 27 is arranged between the two hinged assemblies, so that the first telescopic device 27 does not interfere with the movement of the hinged assembly, making the overall structure more compact and making full use of the space. Specifically, the number of the first hinged rod 23, the second hinged rod 24, the third hinged rod 25 and the fourth hinged rod 26 are two respectively; the two first hinged rods 23 and the two second hinged rods 24 are respectively hinged and located at the two ends of the first moving rod 21, the two third hinged rods 25 and the two fourth hinged rods 26 are respectively hinged and located at the two ends of the second moving rod 22, and the two first hinged rods 23 and the two third hinged rods 25 are sequentially arranged at the four corners of the lower surface of the second bed board 71, so that the force is more uniform and the load-bearing capacity is better.

[0078] The working process of the bed board lifting mechanism 2 controlling the lifting of the second bed board 71 is as follows: when the folding bed needs to be unfolded, the first telescopic device 27 controls the first moving rod 21 and the second moving rod 22 to move relatively far apart, the first moving rod 21 drives the first hinged rod 23 at both ends to rotate around the first hinge shaft 28, and the second moving rod 22 drives the third hinged rod 25 at both ends to rotate around the second hinge shaft 29, so that the rotation of the first hinged rod 23 and the third hinged rod 25 drives the second bed board 71 to rise; when the folding bed needs to be folded, the first telescopic device 27 controls the first moving rod 21 and the second moving rod 22 to move relatively close, the first moving rod 21 drives the first hinged rod 23 at both ends to rotate around the first hinge shaft 28, and the second moving rod 22 drives the third hinged rod 25 at both ends to rotate around the second hinge shaft 29, so that the rotation of the first hinged rod 23 and the third hinged rod 25 drives the second bed board 71 to descend. At the same time, the cylinder or hydraulic cylinder has a limit clamping function when it is stationary, and the height of the second bed board 71 is kept unchanged through the hinge assembly.

[0079] refer to Fig.11The flipping mechanism 3 includes a first gear 31, a second gear 32, and a flipping motor 33 fixed on the fixing frame 50. The flipping motor 33 is preferably a reduction motor, the first gear 31 is sleeved on the power output end of the flipping motor 33, the second gear 32 is fixedly connected to the third bed board 72 through a connecting shaft 34, and the first gear 31 is meshed with the second gear 32 for transmission. Further, the first gear 31 is meshed with the second gear 32 through a plurality of intermediate gears 35, or the first gear 31 is meshed with the second gear 32 through a belt or a chain, so that the first gear 31 and the second gear 32 rotate synchronously. A connecting plate is provided on the side of the third bed board 72, and a connecting hole for sleeved connecting shaft 34 is provided on the connecting plate. The connecting shaft 34 passes through the connecting hole through interference fit and is then inserted into the inner circle of the second gear 32, so that the third bed board 72 rotates synchronously with the second gear 32, and then the flipping of the third bed board 72 is controlled by the flipping mechanism 3.

[0080] In order to improve the stability of the flipping of the third bed board 72, there are two flipping mechanisms 3, and connecting plates are respectively provided on the opposite sides of the third bed board 72. The two flipping mechanisms 3 are respectively arranged on the first vertical sub-frame 501 and the second vertical sub-frame 502 and are respectively connected to the connecting plates on both sides of the third bed board 72. The two flipping mechanisms 3 synchronously drive the third bed board 72 to flip.

[0081] Since the folding bed of the present invention can be stored in the storage space of the locker, the folding bed as a whole moves relative to the locker when in use, so when the folding bed moves relative to the locker, the fixing frame 50 needs to be off the ground. For this reason, the folding bed of the present invention also includes a wheel group lifting mechanism 4, which is used to control the fixing frame 50 to contact or separate from the ground.

[0082] refer to Fig.12 The wheel group lifting mechanism 4 includes a walking wheel group 5 for driving the fixed frame 50 to translate, a first hinge 41, a second hinge 42, a third moving rod 43 and a fourth moving rod 44. The third moving rod 43 and the fourth moving rod 44 are relatively spaced and arranged in parallel, and the third moving rod 43 and the fourth moving rod 44 are relatively close to or far away from each other through a second telescopic device 45; one end of the first hinge 41 is hinged to the fixed frame 50, the other end of the first hinge 41 is connected to the walking wheel group 5, and the first hinge 41 is fixedly connected to the third moving rod 43; one end of the second hinge 42 is hinged to the fixed frame 50, the other end of the second hinge 42 is connected to the walking wheel group 5, and the second hinge 42 is fixedly connected to the fourth moving rod 44. The second telescopic device 45 is a cylinder or a hydraulic cylinder, wherein the cylinder or the hydraulic cylinder is a conventional structure in the prior art, and the description thereof is omitted.

[0083] It should be noted that the walking wheel set 5 of the present invention is a wheel structure used to drive the device to move in the prior art, usually including a driving wheel and a driven wheel. Fig.13 The walking wheel set 5 includes a wheel frame 51, a rotating shaft 52 rotatably arranged on the wheel frame 51, a bottom wheel 53 and a second roller 54. The bottom wheel 53 is used as the driving wheel of the walking wheel set 5, and the second roller 54 is used as the driven wheel of the walking wheel set 5, and the diameter of the bottom wheel 53 is designed to be larger than the diameter of the second roller 54. The wheel frame 51 is provided with an axial hole for the rotating shaft 52 to pass through, and a bearing is arranged in the axial hole. The rotating shaft 52 is sleeved on the inner ring of the bearing with an interference fit, so that the bottom wheel 53 is rotatably arranged on the wheel frame 51. At the same time, a driving gear is sleeved on the rotating shaft 52, and the driving gear is driven to rotate by a transmission mode of a motor-driven gear chain, so that the bottom wheel 53 actively rotates. In order to provide stability in the movement of the walking wheel set 5, the number of the bottom wheel 53 and the second roller 54 are two respectively, and the two bottom wheels 53 are respectively sleeved on the two ends of the rotating shaft 52, and the two second rollers 54 are relatively spaced and arranged on both sides of the bottom of the wheel frame 51.

[0084] Furthermore, in order to improve the balance of the lifting of the running wheel set 5, the third moving rod 43 and the fourth moving rod 44 are respectively arranged horizontally, and the moving tracks of the third moving rod 43 and the fourth moving rod 44 are located on the same horizontal plane. The third moving rod 43 and the fourth moving rod 44 move relative to each other on the same horizontal plane to control the lifting of the running wheel set 5.

[0085] In order to improve the stability of the lifting of the running wheel group 5, the number of the first hinges 41 is two, and the number of the second hinges 42 is two; the two first hinges 41 are respectively arranged at the two ends of the third moving rod 43, and the two second hinges 42 are respectively arranged at the two ends of the fourth moving rod 44. At the same time, one end of the two first hinges 41 is respectively hinged to the front side of the first vertical sub-frame 501 and the second vertical sub-frame 502, and the other end is relatively spaced and connected to the front of both sides of the wheel frame 51; one end of the two second hinges 42 is respectively arranged at the rear side of the first vertical sub-frame 501 and the second vertical sub-frame 502, and the other end is relatively spaced and connected to the rear of both sides of the wheel frame 51. The running wheel group 5 rotates around the fixed frame 50 through the first hinge 41 and the second hinge 42 to control the bottom wheel 53 and the second roller 54 to contact or separate with the ground.

[0086] Furthermore, the first hinge 41 and the second hinge 42 may be fixedly connected to the wheel frame 51 or rotatably connected. In some embodiments, in order to reduce the friction resistance of the bottom wheel 53 and the second roller 54 when moving, one end of the first hinge 41 and the second hinge 42 is hinged to the wheel frame 51. Fig.12 , 13The first hinge 41 includes a first hinge plate 411 and a second hinge plate 412, and the second hinge 42 includes a third hinge plate 421 and a fourth hinge plate 422. The first end of the first hinge plate 411 is hinged to the first end of the second hinge plate 412 through the third hinge shaft 413, the second end of the first hinge plate 411 is hinged to the wheel frame 51, the second end of the second hinge plate 412 is hinged to the fixed frame 50, and the second hinge plate 412 is fixedly connected to the third moving rod 43; the first end of the third hinge plate 421 is hinged to the first end of the fourth hinge plate 422 through the fourth hinge shaft 423, the second end of the third hinge plate 421 is hinged to the wheel frame 51, the second end of the fourth hinge plate 422 is hinged to the fixed frame 50, and the fourth hinge plate 422 is fixedly connected to the fourth moving rod 44. It should be noted that the hinge structures at various locations are conventional structures in the prior art, and are generally implemented using pins, so the description is omitted.

[0087] Furthermore, the axial direction of the third hinge shaft 413 is parallel to the length direction of the third movable rod 43, and the axial direction of the fourth hinge shaft 423 is parallel to the length direction of the fourth movable rod 44, so as to ensure that when the third movable rod 43 and the fourth movable rod 44 move relative to each other, the first hinge plate 411 and the second hinge plate 412, the third hinge plate 421 and the fourth hinge plate 422 are driven to rotate relative to each other respectively, so as to control the bottom wheel 53 and the second roller 54 to contact or separate from the ground.

[0088] The working process of the wheel group lifting mechanism 4 controlling the lifting of the walking wheel group 5 is as follows: when the fixed frame 50 needs to move, the second telescopic device 45 controls the third moving rod 43 and the fourth moving rod 44 to move relatively away from each other, the third moving rod 43 drives the first hinges 41 at both ends to rotate around the fixed frame 50, and the fourth moving rod 44 drives the third hinges at both ends to rotate around the fixed frame 50, so that the rotation of the first hinge 41 and the third hinge drives the wheel frame 51 to descend, and then the bottom wheel 53 and the second roller 54 are in contact with the ground, and the reaction moves the fixed frame 5 0 to lift it up and lift it off the ground; when the fixing frame 50 needs to be fixed on the ground, the second telescopic device 45 controls the third moving rod 43 and the fourth moving rod 44 to be relatively close, the third moving rod 43 drives the first hinges 41 at both ends to rotate around the fixing frame 50, and the fourth moving rod 44 drives the third hinges at both ends to rotate around the fixing frame 50, so that the rotation of the first hinge 41 and the third hinge drives the wheel frame 51 to rise, thereby separating the bottom wheel 53 and the second roller 54 from the ground, and the fixing frame 50 falls to the ground by its own gravity.

[0089] The folding bed of the present invention can be stored in a storage cabinet. The unfolding process of the folding bed in the folded state is as follows: the wheel group lifting mechanism 4 controls the walking wheel group 5 to descend and makes the bottom wheel 53 and the second roller 54 abut against the ground, the reaction force lifts the fixing frame 50 and leaves the ground, and the motor on the walking wheel group 5 drives the bottom wheel 53 to actively rotate, driving the folding bed in the folded state to move out of the storage cabinet. When the folding bed moves to a certain distance away from the locker, the wheel group lifting mechanism 4 controls the walking wheel group 5 to rise and make the bottom wheel 53 and the second roller 54 leave the ground, and the fixed frame 50 falls back to the ground by gravity; then the flipping mechanism 3 drives the third bed board 72 to rotate 180° around the fixed frame 50, so that the third bed board 72 is separated from the second bed board 71 and the third bed board 72 and the first bed board 70 are located on the same horizontal plane; then the driving mechanism 1 drives the movable frame 60 and the first bed board 70 to move horizontally, so that the first bed board 70 and the second bed board 71 are separated; finally, the bed board lifting drives the second bed board 71 to rise, so that the second bed board 71 is located on the same horizontal plane as the first bed board 70 and the third bed board 72, and the three are assembled together to form a folding bed.

[0090] In summary, the embodiment of the present invention provides a folding bed, which includes a fixed frame, a mobile frame, a first bed board, a second bed board and a third bed board. The fixed frame is fixed on the ground to play a positioning and supporting role. The first bed board is arranged on the mobile frame. The mobile frame is translated left and right relative to the fixed frame by a driving mechanism. The second bed board is lifted up and down relative to the fixed frame by a bed board lifting mechanism. The third bed board is rotated relative to the fixed frame by a flipping mechanism. When the folding bed is in an unfolded state, the first bed board, the second bed board and the third bed board are automatically controlled to be spliced ​​on the same plane in sequence. The process does not require manual labor, which is labor-saving and convenient. When the folding bed is in a folded state, the third bed board, the second bed board and the first bed board are stacked from top to bottom in sequence by automatic control. The overall structure is compact and orderly, and the volume is small. The folded folding bed is stored in a storage cabinet and occupies less space. The folding bed of the present invention uses a driving mechanism, a bed board lifting mechanism and a flipping mechanism to intelligently control the unfolding or folding of the folding bed. The folding is intelligent and convenient, avoiding manual folding of the folding bed, and is convenient for the use of the elderly or children.

[0091] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0092] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A folding bed, characterized in that: include: Fixed frame; Mobile racks; a first bed board, wherein the first bed board is fixed on the top of the movable frame; Second bed board; The third bed board; A driving mechanism, the driving mechanism is arranged on the fixed frame and is used to drive the movable frame to translate left and right relative to the fixed frame; A bed board lifting mechanism, which is arranged on the fixing frame and is used to drive the second bed board to move up and down relative to the fixing frame; A turning mechanism, which is arranged on the fixing frame and is used to drive the third bed board to rotate around the fixing frame; When the folding bed is in an unfolded state, the first bed board, the second bed board and the third bed board are sequentially assembled on the same plane; when the folding bed is in a folded state, the third bed board, the second bed board and the first bed board are sequentially stacked from top to bottom; The bed board lifting mechanism comprises a first moving rod and a second moving rod, a first hinge rod, a second hinge rod, a third hinge rod and a fourth hinge rod which are arranged relatively spaced apart; The first moving rod and the second moving rod are relatively moved closer or farther away via a first telescopic device; The first end of the first hinged rod is hinged to the first end of the second hinged rod through a first hinged shaft, the second end of the first hinged rod is hinged to the second bed board, the second end of the second hinged rod is hinged to the fixed frame, and the first hinged rod is fixedly connected to the first moving rod; The first end of the third hinged rod is hinged to the first end of the fourth hinged rod through the second hinged shaft, the second end of the third hinged rod is hinged to the second bed board, the second end of the fourth hinged rod is hinged to the fixed frame, and the third hinged rod is fixedly connected to the second moving rod; Wherein, the angle opening between the first moving rod and the second moving rod is opposite to the angle opening between the third hinge rod and the fourth hinge rod; The flip mechanism comprises a first gear, a second gear, and a flip motor fixed on the fixing frame; The first gear is sleeved on the power output end of the flip motor, the second gear is fixedly connected to the third bed board via a connecting shaft, and the first gear is meshed with the second gear for transmission; The driving mechanism comprises a first screw seat and a second screw seat fixed on the fixing frame, a screw, and a nut sleeved on the screw; The first screw seat and the second screw seat are arranged relatively spaced apart, one end of the screw is rotatably arranged on the first screw seat, and the other end of the screw is rotatably arranged on the second screw seat, and the movable frame is fixedly connected to the nut.

2. The folding bed according to claim 1, characterized in that: The number of the first hinged rods is two, the number of the second hinged rods is two, the number of the third hinged rods is two, and the number of the fourth hinged rods is two; the two first hinged rods and the two second hinged rods are respectively hinged and located at both ends of the first moving rod, and the two third hinged rods and the two fourth hinged rods are respectively hinged and located at both ends of the second moving rod.

3. The folding bed according to claim 1 or 2, characterized in that: The movement tracks of the first movement rod and the second movement rod are located on the same horizontal plane.

4. The folding bed according to claim 1, characterized in that: It also includes a wheel lifting mechanism, which includes a walking wheel for driving the fixed frame to translate, a first hinge, a second hinge, and a third moving rod and a fourth moving rod that are relatively spaced apart; The third moving rod and the fourth moving rod are relatively moved closer or farther away via the second telescopic device; One end of the first hinge is hinged to the fixed frame, the other end of the first hinge is connected to the walking wheel set, and the first hinge is fixedly connected to the third moving rod; One end of the second hinge is hinged to the fixing frame, the other end of the second hinge is connected to the walking wheel set, and the second hinge is fixedly connected to the fourth moving rod.

5. The folding bed according to claim 4, characterized in that: The number of the first hinges is two, and the number of the second hinges is two; the two first hinges are respectively arranged at two ends of the third moving rod, and the two second hinges are respectively arranged at two ends of the fourth moving rod.

6. The folding bed according to claim 4, characterized in that: The first hinge member includes a first hinge plate and a second hinge plate; the second hinge member includes a third hinge plate and a fourth hinge plate; The first end of the first hinged plate is hinged to the first end of the second hinged plate through a third hinge shaft, the second end of the first hinged plate is hinged to the walking wheel set, the second end of the second hinged plate is hinged to the fixing frame, and the second hinged plate is fixedly connected to the third moving rod; The first end of the third hinged plate is hinged to the first end of the fourth hinged plate through a fourth hinge shaft, the second end of the third hinged plate is hinged to the walking wheel set, the second end of the fourth hinged plate is hinged to the fixed frame, and the fourth hinged plate is fixedly connected to the fourth moving rod.

7. The folding bed according to any one of claims 4 to 6, characterized in that: The movement tracks of the third movement rod and the fourth movement rod are located on the same horizontal plane.

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