Folding bunk bed

Abstract

The invention discloses a folding bunk bed which comprises a mounting frame, and two bed bodies are assembled on the mounting frame; the bed body comprises a first bed board and a second bed board, the bottoms of the opposite ends of the first bed board and the second bed board are rotationally connected through a hinge, a fixing block is fixedly arranged at the end, opposite to the first bed board, of the second bed board and arranged above the hinge, and a notch in sliding fit with the fixing block is formed in the end, opposite to the second bed board, of the first bed board. An oil injection mechanism is arranged in the fixing block, and when the first bed board rotates and is folded relative to the second bed board and the fixing block is separated from the notch, the oil injection mechanism injects oil to the rotating position of the hinge, so that the rotating position of the hinge is lubricated by lubricating oil; the problem of rusting of the hinge in a humid environment for a long time is avoided, the service life of the hinge is prolonged, and abnormal sound caused by rotation of the hinge is avoided.

Description

Technical Field

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

[0002] A folding bunk bed is a multifunctional piece of furniture that is usually designed to save space and is easy to fold up when not needed. This type of bed is particularly suitable for children's rooms, student dormitories or families with limited space.

[0003] Chinese Patent Publication No.: CN218074245U discloses a foldable multifunctional bunk bed, in which a first bed body and a second bed body are detachably connected via a detachable connecting piece, a supporting foot is provided at the bottom of the first bed body, and a positioning hole is provided on the supporting foot, and the detachable connecting piece includes a mounting plate, one side of the mounting plate is detachably connected to the first bed body, and a sleeve rod is provided on the other side of the mounting plate, and a connecting hole is provided on the sleeve rod.

[0004] In the prior art, the folding mechanism of a folding bunk bed is usually composed of hinges, slide rails and other components to facilitate the folding of the bed. In actual use, if the environment in which the folding bunk bed is placed is relatively humid, such as a long period of rainy days causing the indoor environment to be relatively humid, the humid environment can easily accelerate the oxidation of the metal parts of the folding mechanism, causing them to rust. When the metal parts of the folding mechanism are rusted, the folding mechanism will make abnormal noises when the bunk bed is folded, and the wear of the folding mechanism will also be accelerated.

[0005] Therefore, it is necessary to provide a folding bunk bed to solve the above-mentioned technical problems. Summary of the invention

[0006] The object of the present invention is to provide a foldable bunk bed to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a folding bunk bed, comprising a mounting frame, on which two groups of bed bodies are assembled, and the two groups of bed bodies are arranged in parallel up and down; the bed body comprises a first bed board and a second bed board, and the bottoms of the opposite ends of the first bed board and the second bed board are rotatably connected by hinges, and a fixing block is fixedly arranged at one end of the second bed board relative to the first bed board, and the fixing block is arranged above the hinge, and a notch is arranged at one end of the first bed board relative to the second bed board for sliding cooperation with the fixing block, an oil injection mechanism is arranged in the fixing block, and a protective component is arranged below the hinge.

[0008] As a further solution of the present invention: the oil injection mechanism includes an injection tube; the injection tube is fixedly arranged at the bottom center of one end of the fixed block close to the second bed board, a cavity is arranged in the fixed block, the top of the injection tube is connected with the cavity, a connecting plate is slidably arranged in the cavity, a plug is fixedly arranged at the bottom of one end of the connecting plate close to the injection tube, and a transmission assembly is fixedly arranged at the top of one end of the connecting plate away from the plug.

[0009] As a further solution of the present invention: the transmission assembly includes an L-plate; a movable groove is provided at the bottom of the fixed block, the movable groove is provided on the side of the cavity away from the second bed board, and the L-plate is elastically connected to the movable groove, the L-plate is slidably provided in the movable groove on the side away from the cavity, a first tooth is fixedly provided on the side of the L-plate close to the cavity, the L-plate is driven by the first tooth and is matched with a transmission member, the transmission member is rotatably connected to the movable groove, the transmission member is driven by a driven plate on the side away from the L-plate, and the driven plate is fixedly connected to the connecting plate at one end away from the transmission.

[0010] As a further solution of the present invention: the transmission member includes a gear ring; a round rod is rotatably arranged inside the gear ring, and gears are fixedly connected to both ends of the round rod. The gears are in transmission cooperation with the first teeth, and the gear ring is in transmission cooperation with the driven plate.

[0011] As a further solution of the present invention: a limiting groove is arranged in the fixed block, and the limiting groove is arranged on the side of the movable groove away from the cavity; a connecting block slidably connected to the limiting groove is arranged at the top of the first tooth; a resist plate is elastically connected to the L-plate, and the resist plate is arranged below the gear ring, and one end of the resist plate away from the driven plate extends into the limiting groove.

[0012] As a further solution of the present invention: the hinge includes a first rotating plate and a second rotating plate; a plurality of groups of circular sleeves are provided at opposite ends of the first rotating plate and the second rotating plate, a rotating shaft is rotatably provided inside the circular sleeve, a flow groove is provided on the rotating shaft, the top of the first rotating plate is fixedly connected to the second bed board, the top of the second rotating plate is fixedly connected to the first bed board, and the end of the injection tube corresponds to the position of the rotating shaft.

[0013] As a further solution of the present invention: the protective component includes a circular plate; the circular plates are symmetrically arranged on both sides of the second bed board, a fixed plate is fixedly arranged between the two groups of the circular plates, a collecting groove is arranged in the fixed plate, an inner plate and a second connecting channel are slidingly connected along the center of the collecting groove, and the bottom of the first bed board and the second bed board are both provided with storage grooves that are slidingly connected to the inner plate and the second connecting channel accordingly.

[0014] As a further solution of the present invention: a collecting port connected to the collecting tank is arranged near the center of the fixed plate near the rotating shaft, a push rod is elastically connected to one end of the inner plate near the collecting port, and a sealing plate is fixedly arranged at one end of the push rod away from the inner plate.

[0015] As a further solution of the present invention: a delivery hole is arranged in the second connecting channel, and a plurality of delivery holes are arranged in an array in the second connecting channel. A first connecting channel connected to the cavity is arranged in the side wall of the second bed board, and an end of the first connecting channel away from the cavity is connected to a corresponding group of storage grooves.

[0016] As a further solution of the present invention: valves are provided at both ends of the delivery hole.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: through the setting of the oil injection mechanism, when the first bed board is rotated and folded relative to the second bed board, when the fixed block is separated from the notch, the oil injection mechanism will then inject oil into the rotating part of the hinge, so that the lubricating oil lubricates the rotating part of the hinge, avoiding the rust problem caused by the hinge being in a humid environment for a long time, extending the service life of the hinge, and avoiding abnormal noise when the hinge rotates. Through the setting of the protective component, when oil leaks and drips from the hinge, the oil will fall on the fixed plate, and then will be concentrated in the center of the fixed plate, thereby being collected. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the front three-dimensional structure of the present invention.

[0019] Figure 2 It is a structural schematic diagram of the bed body in the present invention.

[0020] Figure 3 For the present invention Figure 2 Schematic diagram of the structure at A in the middle.

[0021] Figure 4 It is a structural schematic diagram of a cross-section of the middle part of the fixing block in the present invention.

[0022] Figure 5 For the present invention Figure 4 Schematic diagram of the structure at B in the figure.

[0023] Figure 6 For the present invention Figure 4 Schematic diagram of the structure at C in the middle.

[0024] Figure 7 It is a schematic diagram of the structure of the inner plate and the fixed plate in the present invention.

[0025] Figure 8 It is a schematic diagram of the structure of the gear ring and the gear in the present invention.

[0026] Fig. 9 It is a schematic diagram of the structure of the sealing plate and the collecting tank in the present invention.

[0027] Fig.10 It is a structural schematic diagram of the rotating shaft in the present invention.

[0028] In the figure: 1. mounting frame; 2. bed body; 21. first bed board; 22. second bed board; 23. fixing block; 3. round plate; 31. inner plate; 32. fixing plate; 33. storage groove; 34. first connecting channel; 311. second connecting channel; 312. sealing plate; 313. collecting groove; 314. conveying hole; 4. hinge; 41. first rotating plate; 42. second rotating plate; 5. cavity; 51. connecting plate; 52. driven plate; 53. plug; 6. movable groove; 61. L plate; 62. first tooth; 63. abutment plate; 64. limiting groove; 7. gear ring; 71. gear; 72. protrusion; 8. injection tube; 9. rotating shaft; 91. flow groove; 10. push rod; 11. valve. DETAILED DESCRIPTION

[0029] See also Figure 1-Figure 10 In an embodiment of the present invention, a folding bunk bed includes a mounting frame 1, on which two sets of bed bodies 2 are assembled and arranged, and the two sets of bed bodies 2 are arranged in parallel on the mounting frame 1. Preferably, the bed body 2 includes a first bed board 21 and a second bed board 22, and the first bed board 21 and the second bed board 22 have the same structural dimensions. The bottoms of the opposite ends of the first bed board 21 and the second bed board 22 are rotatably connected by hinges 4, so that the first bed board 21 and the second bed board 22 can be relatively rotated by the action of the hinges 4 to complete folding, thereby facilitating For the storage and transportation of the bed body 2, a fixing block 23 is fixedly provided at one end of the second bed board 22 relative to the first bed board 21, and the fixing block 23 is arranged above the hinge 4. A notch that slidably cooperates with the fixing block 23 is provided at one end of the first bed board 21 relative to the second bed board 22. Through the cooperation between the fixing block 23 and the notch, when the first bed board 21 and the second bed board 22 are unfolded, the fixing block 23 cooperates with the notch to support the first bed board 21 and the second bed board 22, so that the hinge 4 is subjected to less pressure, thereby extending its service life.

[0030] After the bed body 2 has been used for a long time, in order to prevent the hinge 4 from oxidizing and rusting, when the bed body 2 is folded, the hinge 4 will make an abnormal noise and wear quickly, an oil filling mechanism is provided in the fixed block 23. When the first bed board 21 is rotated and folded relative to the second bed board 22, the fixed block 23 is separated from the notch, and then the oil filling mechanism will inject oil into the rotating part of the hinge 4, so that the lubricating oil lubricates the rotating part of the hinge 4, avoiding the rust problem caused by the hinge 4 being in a humid environment for a long time, extending the service life of the hinge 4, and avoiding the abnormal noise caused by the rotation of the hinge 4.

[0031] See also Figure 3-Figure 4 , Figure 6 Preferably, the oil injection mechanism includes an injection tube 8; the injection tube 8 is fixedly arranged at the bottom center of one end of the fixed block 23 close to the second bed board 22, a cavity 5 is arranged in the fixed block 23, and oil for lubricating the hinge 4 is arranged in the cavity 5, the top of the injection tube 8 is connected with the cavity 5, a connecting plate 51 is slidably arranged in the cavity 5, a plug 53 is fixedly arranged at the bottom of one end of the connecting plate 51 close to the injection tube 8, and a transmission assembly is fixedly arranged at the top of one end of the connecting plate 51 away from the plug 53, and the transmission assembly is arranged in the side wall of the fixed block 23.

[0032] The bottom of the injection tube 8 corresponds to the center of the rotation of the hinge 4, and a semicircular groove adapted to the injection tube 8 is provided at the opposite end of the second bed board 22 and the first bed board 21. When the first bed board 21 and the second bed board 22 are unfolded, the injection tube 8 is stored in the semicircular groove, and the plug 53 is slidably adapted to the top of the injection tube 8. When the bottom end of the plug 53 slides into the injection tube 8, it will block the injection tube 8 and the cavity 5, so that the oil in the cavity 5 will not enter the injection tube 8. When the plug 53 is separated from the injection tube 8, the oil in the cavity 5 will enter the injection tube 8, and then be injected into the hinge 4 through the injection tube 8, so that the rotating part of the hinge 4 is lubricated, and the movement of the plug 53 is driven by the connection plate 51 and the transmission assembly.

[0033] See also Figure 4-Figure 5 Preferably, the transmission assembly includes an L-plate 61; a movable groove 6 is provided at the bottom of the fixed block 23, and the movable groove 6 is provided on the side of the cavity 5 away from the second bed board 22; the L-plate 61 is slidably provided in the movable groove 6, and the L-plate 61 and the movable groove 6 are elastically connected by a spring; the L-plate 61 is slidably provided in the movable groove 6 on the side away from the cavity 5; a first tooth 62 is fixedly provided on the side of the L-plate 61 close to the cavity 5; the L-plate 61 is transmitted through the first tooth 62 and matched with a transmission member; the transmission member is rotatably connected to the movable groove 6; a side of the transmission member away from the L-plate 61 is transmitted and matched with a driven plate 52; an end of the driven plate 52 away from the transmission is fixedly connected to the connecting plate 51; a spring is provided between the top center of the driven plate 52 and the inner wall of the fixed block 23.

[0034] The bottom of the movable slot 6 is open, so that the L plate 61 can slide out of the bottom of the fixing block 23. The bottom end of the L plate 61 is in sliding fit with the notch. The driven plate 52 is arranged in an inverted "C" structure, and the side close to the movable slot 6 slides into the movable slot 6, and the other side slides into the cavity 5 in a sealed manner and is fixedly connected to the connecting plate 51. When in use, when the fixing block 23 is separated from the notch, the L plate 61 moves out of the movable slot 6 under the action of the spring. The movement of the movable slot 6 makes the driven plate 52 move upward through the cooperation of the first tooth 62 and the transmission member. The upward movement of the driven plate 52 drives the connecting plate 51 to move upward in the cavity 5, so that the plug 53 is separated from the injection tube 8. At this time, the oil in the cavity 5 enters the injection tube 8 and flows towards the hinge 4 to achieve lubrication of the hinge 4.

[0035] Please refer to Figure 4 、 Figure 6 、 Figure 8 Of course, in order to prevent the oil in the cavity 5 from not flowing into the injection tube 8 due to negative pressure problems, a pressure relief rod is provided on the top of the connecting plate 51, and a pressure relief hole is provided on the top of the side wall of the fixing block 23. The pressure relief rod and the pressure relief hole are in sliding connection. The diameter of the pressure relief rod is smaller than the diameter of the pressure relief hole, and a sealing block is elastically provided at the top of the pressure relief hole. In the natural state, the sealing block is in a state of sealing the pressure relief hole under the elastic action. In this way, when the first bedplate 21 rotates and folds relative to the second bedplate 22, the L plate 61 moves out of the movable slot 6 and then makes the connecting plate 51 move upward in the cavity 5 through the cooperation of the transmission member and the driven plate 52, so that the pressure relief rod moves upward. The upward movement of the pressure relief rod will push the sealing block to move and connect the pressure relief hole to the outside, so that the oil in the cavity 5 will not be unable to flow into the injection tube 8 due to negative pressure problems. It should be noted that: the pressure relief rod and the pressure relief hole are not shown in the figure.

[0036] Please refer to Figure 5 、 Figure 8 The transmission member includes a toothed ring 7; a round rod is rotatably arranged in the toothed ring 7, and gears 71 are fixedly connected to both ends of the round rod. A protrusion 72 is elastically connected to the side wall of the round rod through a spring. An arc-shaped groove that slidably fits with the protrusion 72 is provided on the inner side wall of the inner ring of the toothed ring 7. Multiple groups of the protrusion 72 and the arc-shaped groove are arranged in a circular array along the circle of the round rod. The gear 71 is in transmission cooperation with the first tooth 62. There are two groups of the first teeth 62. The second teeth that are in transmission cooperation with the toothed ring 7 are provided on the driven plate 52. The toothed ring 7 is in transmission cooperation with the driven plate 52 through the second teeth. The length of the first tooth 62 provided on the L plate 61 is such that when the L plate 61 moves out of the movable slot 6, it will only drive the driven plate 52 to move upward a certain distance through the transmission member, and then the first tooth 62 is separated from the transmission member, and then the driven plate 52 elastically moves back to its original position.

[0037] When in use, when the fixed block 23 and the notch are in cooperation, the gear ring 7 is meshed with the second tooth on the driven plate 52, and the protrusion 72 is in cooperation with the arc groove. When the fixed block 23 and the notch are separated, the L plate 61 moves out of the movable groove 6, and the movable groove 6 drives the gear 71 to rotate through the L plate 61. The gear 71 rotates through the cooperation between the protrusion 72 and the arc groove. At this time, since the driven plate 52 can move, the rotation of the gear 71 will drive the gear ring 7 to rotate under the elastic action of the protrusion 72, and the gear ring 7 The rotation causes the driven plate 52 to move upward; when the fixed block 23 and the notch cooperate, the notch acts on the L-plate 61 to move and reset, and the movement and reset of the L-plate 61 will cause the driven plate 52 to move and reset through the transmission member. Through the cooperation of the protrusion 72 and the arc groove, when the driven plate 52 no longer has the conditions to move and can continue to move, the protrusion 72 will slide and separate from the arc groove, so that the gear 71 cannot drive the gear ring 7 to rotate through the round rod. Of course, the gear ring 7 and the gear 71 can also rotate in opposite directions.

[0038] In order to make the fixed block 23 and the notch cooperate, that is, when the second bed board 22 and the first bed board 21 are rotated and unfolded, oil can be injected into the hinge 4 at this time, and then the oil is attached to the rotating part of the hinge 4, so that when the hinge 4 is unfolded and used for a long time, the hinge 4 is not prone to oxidation and rust. Preferably, a limiting groove 64 is provided in the fixed block 23, and the limiting groove 64 is arranged on the side of the movable groove 6 away from the cavity 5. The top of the first tooth 62 is provided with a connecting block slidably connected to the limiting groove 64, and the movement of the first tooth 62 is limited by the action of the abutment plate 63 and the connecting block. The L plate 61 is elastically connected with a abutment plate 63 by a spring, and the abutment plate 63 is arranged below the gear ring 7, and the abutment plate 63 is arranged vertically with the L plate 61, and the end of the abutment plate 63 away from the driven plate 52 extends into the limiting groove 64, and the bottom of the end of the abutment plate 63 close to the limiting groove 64 is semicircular, and the other end of the L plate 61 extends to the side wall of the driven plate 52 and slides in contact.

[0039] When in use, when the L plate 61 is retracted in the movable groove 6, the end of the push plate 63 close to the limit groove 64 extends into the limit groove 64 under the action of the spring; when the L plate 61 moves out of the movable groove 6, it drives the push plate 63 to move. When the push plate 63 moves to the end of the limit groove 64, the push plate 63 will slide with the limit groove 64 through the semicircular structure at the bottom of one end, thereby making the push plate 63 move in the direction of the driven plate 52. Before this, the driven plate 52 has moved to the top of the push plate 63 due to the rotation of the transmission member driven by the movement of the L plate 61. Therefore, at this time, the push plate 63 will not conflict with the driven plate 52 when moving toward the driven plate 52, but will move to the bottom of the driven plate 52. When the L plate 61 moves out of the movable groove 6 to the maximum, the first tooth 62 has been separated from the transmission member, and the driven plate 52 After the plate 52 moves and resets, the end of the driven plate 52 is still above the push plate 63; when the second bed plate 22 and the first bed plate 21 are unfolded, the fixed block 23 cooperates with the notch, and the L plate 61 moves and resets. During this process, the push plate 63 will drive the driven plate 52 to move upward, and the upward movement of the driven plate 52 will cause the connecting plate 51 to move upward, and then inject oil into the hinge 4 through the injection tube 8. When the push plate 63 moves to the limiting groove 64, the push plate 63 moves and resets under the action of the spring, and then separates from the end of the driven plate 52. In the process of the push plate 63 pushing the driven plate 52 to move upward, the first tooth 62 will mesh with the gear 71. Since the rotation directions between the gear 71 and the gear ring 7 are opposite, the protrusion 72 will separate from the arc groove, and thus will not affect the independent rotation of the gear ring 7 and the gear 71.

[0040] See also Figure 4-Figure 6 , Fig.10 The hinge 4 includes a first rotating plate 41 and a second rotating plate 42; a plurality of groups of circular sleeves are fixedly arranged in an array at opposite ends of the first rotating plate 41 and the second rotating plate 42, and the plurality of circular sleeves are arranged in a staggered array on the first rotating plate 41 and the second rotating plate 42, a rotating shaft 9 is rotatably arranged in the circular sleeve, and a flow groove 91 is arranged on the rotating shaft 9, the top of the first rotating plate 41 is fixedly connected to the second bed plate 22, and the top of the second rotating plate 42 is fixedly connected to the first bed plate 21, and the end of the injection tube 8 corresponds to the position of the rotating shaft 9, so that when in use, the first bed plate 21 and the second bed plate 22 are rotated and folded by the cooperation of the first rotating plate 41 and the second rotating plate 42 and the rotating shaft 9, and when the injection tube 8 injects oil, the oil drips on the circular sleeve, and then flows to the rotating shaft 9 through the gap between the circular sleeves, and the flow groove 91 can intercept the oil, so that the oil stays between the first rotating plate 41 and the second rotating plate 42 for a longer time.

[0041] See also Figure 1-Figure 10In order to prevent the oil injected on the hinge 4 from dripping on the ground or other positions, preferably, a protective component is arranged under the hinge 4, and the protective component includes a circular plate 3; the circular plates 3 are symmetrically arranged on both sides of the second bed plate 22, and a fixed plate 32 is fixedly arranged between the two groups of circular plates 3. The fixed plate 32 is arranged in an arc structure, so that when the oil leaked and dripped on the hinge 4, it will fall on the fixed plate 32, and then it will be concentrated at the center of the fixed plate 32, so as to facilitate collection. A collecting groove 313 is arranged in the fixed plate 32, and the inner groove 313 is slidably connected along the center. The plate 31, the second connecting channel 311, the inner plate 31 and the second connecting channel 311 are symmetrically arranged along the center of the collecting groove 313, and the structural shape of the inner plate 31 and the second connecting channel 311 is the same. The bottom of the first bed plate 21 and the second bed plate 22 are provided with a storage groove 33 corresponding to the inner plate 31 and the second connecting channel 311. The inner plate 31 and the second connecting channel 311 are both sealed and slidably connected to the collecting groove 313, and are also sealed and slidably connected to the side wall of the circular plate 3, so that the oil dripping on the hinge 4 will be collected on the fixed plate 32, and there will be no leakage problem.

[0042] It should be noted that: the slider and the slide groove are shown in the figure, and the sliders are fixedly arranged symmetrically at the opposite ends of the two groups of circular plates 3 along the center. The second bed board 22 and the first bed board 21 are provided with slide grooves corresponding to the two groups of sliders for sliding connection respectively, and a spring is arranged between the slider and the slide groove. The center of the circular plate 3 corresponds to the rotating shaft 9, and the shape of the slide groove is adapted to the trajectory of the slider rotating about the center of the circular plate 3. In this way, when the first bed board 21 and the second bed board 22 are rotated and folded, the two groups of sliders will move approximately synchronously under the action of the corresponding springs, so that the center of the fixed plate 32 can remain corresponding to the rotating shaft 9. When the first bed board 21 and the second bed board 22 are folded to be completely fitted, the inner plate 31 and the second connecting channel 311 are retracted into the fixed plate 32, and the fixed plate 32 is retracted into the storage groove 33. When the first bed board 21 and the second bed board 22 are unfolded, the center of the fixed plate 32 is still kept corresponding to the rotating shaft 9.

[0043] See also Figure 4 , Figure 7 , Fig. 9The closure 312 is provided on the cam face of the fixing plate 32 so as to prevent the oil from leaking out of the fixing plate 32 and the cam face of the fixing plate 32.

[0044] Further, preferably, a delivery hole 314 is provided in the second connecting channel 311, and a plurality of delivery holes 314 are arranged in an array in the second connecting channel 311. A first connecting channel 34 connected to the cavity 5 is provided in the side wall of the second bed board 22, and an end of the first connecting channel 34 away from the cavity 5 is connected to a corresponding group of storage grooves 33. Valves 11 are provided at both ends of the delivery hole 314, and a valve 11 is also provided at an end of the first connecting channel 34 close to the cavity 5. The valve 11 in the delivery hole 314 ensures that the liquid in the delivery hole 314 will only be transported from the collecting groove 313 to the storage groove 33, and the valve 11 in the first connecting channel 34 ensures that the liquid in the first connecting channel 34 can only be transported to the cavity 5.

[0045] When in use, when the first bed board 21 and the second bed board 22 are unfolded, the inner plate 31 and the second connecting channel 311 are at the bottom position of the storage groove 33 and protrude from the fixing plate 32, thereby covering the hinge 4 and avoiding the problem of leakage of the hinge 4. The sealing plate 312 is on one side of the collecting port, so that the collecting tank 313 is connected with the space below the hinge 4 through the collecting port; and when oil drips from the hinge 4, the oil will drip on the fixing plate 32, thereby avoiding the oil from dripping on the bed body 2 below or the ground, affecting the use. The oil dripping on the fixing plate 32 will then slide to the collecting port and be collected in the collecting tank 313. When the bed body 2 needs to be folded, the circular plate 3 will be between the slider and the slide With the cooperation of the grooves, the inner plate 31 and the second connecting channel 311 are in a state of synchronous movement relative to each other in the receiving groove 33. The movement of the inner plate 31 through the push rod 10 causes the sealing plate 312 to move to block the collecting port. When the collecting port is blocked, the inner plate 31 and the second connecting channel 311 continue to move. When the second connecting channel 311 and the sealing plate 312 contact, the second connecting channel 311 will push the sealing plate 312 to move toward the inner plate 31, so that the problem of getting stuck with the second connecting channel 311 will not occur. In this process, the oil between the second connecting channel 311 and the sealing plate 312 will be squeezed and transported to the delivery hole 314, and then enter the cavity 5 through the receiving groove 33 and the first connecting channel 34 for recycling, saving resources.

Claims

1. A folding bunk bed, comprising a mounting frame, on which two sets of bed bodies are assembled, and the two sets of bed bodies are arranged in parallel in an upper and lower manner; characterized in that: The bed body includes a first bed board and a second bed board, the bottom of the opposite ends of the first bed board and the second bed board are rotatably connected by a hinge, a fixing block is fixedly provided at one end of the second bed board relative to the first bed board, the fixing block is arranged above the hinge, a notch is provided at one end of the first bed board relative to the second bed board for sliding cooperation with the fixing block, an oil injection mechanism is arranged in the fixing block, and a protective component is arranged below the hinge.

2. A folding bunk bed according to claim 1, characterized in that: The oil injection mechanism includes an injection tube; the injection tube is fixedly arranged at the bottom center of one end of the fixed block close to the second bed board, a cavity is arranged in the fixed block, the top of the injection tube is connected with the cavity, a connecting plate is slidably arranged in the cavity, a plug is fixedly arranged at the bottom of one end of the connecting plate close to the injection tube, and a transmission assembly is fixedly arranged at the top of one end of the connecting plate away from the plug.

3. A folding bunk bed according to claim 2, characterized in that: The transmission assembly includes an L-plate; a movable groove is provided at the bottom of the fixed block, the movable groove is provided on the side of the cavity away from the second bed board, and the L-plate is elastically connected to the movable groove, the L-plate is slidably provided in the movable groove on the side away from the cavity, a first tooth is fixedly provided on the side of the L-plate close to the cavity, the L-plate is matched with a transmission member through the first tooth transmission, the transmission member is rotatably connected to the movable groove, the transmission member is matched with a driven plate on the side away from the L-plate, and the driven plate is fixedly connected to the connecting plate at one end away from the transmission.

4. The folding bunk bed according to claim 3, characterized in that: The transmission member comprises a gear ring; a round rod is rotatably arranged inside the gear ring, gears are fixedly connected at both ends of the round rod, the gears are in transmission cooperation with the first teeth, and the gear ring is in transmission cooperation with the driven plate.

5. The folding bunk bed according to claim 4, characterized in that: A limiting groove is arranged in the fixed block, and the limiting groove is arranged on the side of the movable groove away from the cavity. A connecting block slidably connected to the limiting groove is arranged at the top of the first tooth. A resist plate is elastically connected to the L-plate, and the resist plate is arranged below the gear ring. One end of the resist plate away from the driven plate extends into the limiting groove.

6. The folding bunk bed according to claim 2, characterized in that: The hinge includes a first rotating plate and a second rotating plate; a plurality of groups of circular sleeves are arranged at opposite ends of the first rotating plate and the second rotating plate, a rotating shaft is rotatably arranged inside the circular sleeve, a flow groove is arranged on the rotating shaft, the top of the first rotating plate is fixedly connected to the second bed board, the top of the second rotating plate is fixedly connected to the first bed board, and the end of the injection tube corresponds to the position of the rotating shaft.

7. The folding bunk bed according to claim 6, characterized in that: The protective component includes a circular plate; the circular plates are symmetrically arranged on both sides of the second bed board, a fixed plate is fixedly arranged between the two groups of circular plates, a collecting groove is arranged in the fixed plate, an inner plate and a second connecting path are slidingly connected along the center of the collecting groove, and the bottom of the first bed board and the second bed board are both provided with storage grooves that are slidingly connected to the inner plate and the second connecting path.

8. The folding bunk bed according to claim 7, characterized in that: The fixed plate is provided with a collecting port connected with the collecting groove near the center of the rotating shaft, one end of the inner plate near the collecting port is elastically connected with a push rod, and the end of the push rod away from the inner plate is fixedly provided with a sealing plate.

9. The folding bunk bed according to claim 8, characterized in that: The second connecting channel is provided with a delivery hole, and a plurality of delivery holes are arranged in an array in the second connecting channel. A first connecting channel connected to the cavity is provided in the side wall of the second bed board, and an end of the first connecting channel away from the cavity is connected to a corresponding group of storage grooves.

10. The folding bunk bed according to claim 9, characterized in that: Valves are arranged at both ends of the delivery hole.

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