Lifting sleeping berth bed

Abstract

The utility model discloses a lifting sleeping berth bed which comprises a bed frame, a stay wire disc rotationally connected to the middle of the interior of the bed frame, a plurality of connecting ropes connected to the two sides of the stay wire disc respectively, the connecting ropes located on one side of the stay wire disc extend out of one end of the bed frame, the stay wire disc rotates, and the connecting ropes at the two ends of the bed frame are wound or released at the same time. The lifting device is integrated in the bed frame, the connecting rope is directly connected with the vehicle body, the space needed by bed installation is reduced, four suspension points are finally gathered to the same stay wire disc in the bed board through the steel wire ropes, the stroke consistency of the four steel wire ropes is achieved, meanwhile, the synchronism of four-point movement of the bed board is achieved, and the stability of the sleeping berth is guaranteed.

Description

Technical Field

[0001] This utility model relates to a sleeping bed, and more particularly to a liftable sleeping bed. Background Technology

[0002] Currently, high-speed trains are typically equipped with fixed sleeper berths for passengers to ride and sleep. These fixed berths consist of welded steel tubing bed boards fastened to the train body with screws, topped with mattresses. This fixed installation requires a certain amount of space, occupies a significant amount of space, and cannot be flexibly adjusted, thus failing to make the best use of limited space.

[0003] Utility model patent application CN 227147345 U discloses a concealed lifting hammock. A support frame is installed at the top of the hammock, and traction units are distributed around the perimeter of the hammock. These traction units extend into the support frame, bypass guide rods, and connect to a winch. The winch is driven by a motor built into the drum, enabling the hammock to be smoothly raised and lowered vertically. This current solution requires a support frame, and the accessories occupy installation space, making it unsuitable for passenger cabins with limited space. Utility Model Content

[0004] Purpose of the utility model: The purpose of this utility model is to provide a space-saving and stable lifting sleeper bed.

[0005] Technical solution: The present invention provides a liftable sleeper bed, including a bed frame, a pull-cord reel rotatably connected in the center of the bed frame, and several connecting ropes connected to both sides of the pull-cord reel. The connecting rope located on one side of the pull-cord reel extends from one end of the bed frame. When the pull-cord reel rotates, it simultaneously winds up or releases the connecting ropes at both ends of the bed frame.

[0006] Preferably, the bed frame is provided with a winding component inside, which is connected to a connecting rope. When the pull reel rotates, the winding component is stretched or compressed to store energy. The winding component is one of a tension spring, a torsion spring, or a coil spring.

[0007] Preferably, the winding component is a coil spring, which is located at both ends inside the bed frame. The connecting rope located on one side of the cable reel passes around the cable reel and connects to the coil spring on the other side near the cable reel.

[0008] Preferably, the initial tension of the coil spring is not less than the weight of the bed frame itself.

[0009] Preferably, the bed frame has inclined slides on both sides inside, and the coil springs are slidably connected to the slides on both sides, with the slides guiding the coil springs to unfold along the length of the bed frame.

[0010] Preferably, the outer ring of the cable reel is provided with an annular guide rail for guiding the connecting rope, and the outer periphery is provided with positioning wheels that constrain the connecting rope within the annular guide rail.

[0011] Preferably, the bed frame is provided with several sets of guide connecting ropes at both ends, which are deflected by pulley assemblies in the length and height directions of the bed frame.

[0012] Preferably, each group of pull-line wheel assemblies includes a first roller and a second roller. The axis of the first roller is parallel to the pull-line disc, and the axis of the second roller is perpendicular to the pull-line disc. The outer sides of the first roller and the second roller are respectively provided with a baffle and a cylindrical pin to constrain the connecting rope on the roller.

[0013] Preferably, the end of the connecting rope extending out of the bed frame is provided with a screw for connecting to the vehicle body.

[0014] Preferably, the end of the connecting rope extending out of the bed frame is provided with a screw for connecting to the vehicle body.

[0015] Beneficial effects: Compared with the prior art, this utility model has the following advantages: 1. Small space occupation and stable: The lifting device is integrated inside the bed frame, and the connecting rope can be directly connected to the vehicle body, reducing the space required for bed installation. The four suspension points are ultimately converged to the same pull reel inside the bed board through steel wire ropes, realizing the consistent stroke of the four steel wire ropes and the synchronicity of the four-point movement of the bed board, ensuring the stability of the berth; 2. Small external force required to drive the bed frame lifting: The berth is equipped with a coil spring to overcome the weight of the bed board, making it easy to manually raise and lower the bed; 3. Efficient use of cabin space: When in use, it can be lowered to meet the needs of passengers for rest. When not in use, it can be raised to store in place, providing space for placing items and pedestrian passage. Attached Figure Description

[0016] Figure 1 This is a first-view structural diagram of the lifting sleeper bed of this utility model;

[0017] Figure 2 This is a second-view structural diagram of the lifting sleeper bed of this utility model;

[0018] Figure 3 This is a schematic diagram of the drawstring reel structure;

[0019] Figure 4 Schematic diagram of the winding component structure and the wire pulley assembly structure;

[0020] Figure 5 This is a schematic diagram of the winding component structure;

[0021] Figure 6 This is a side view of the pulley assembly structure. Detailed Implementation

[0022] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0023] like Figure 1 , Figure 2As shown, the lifting sleeper bed mainly consists of a bed frame 1, connecting ropes 5, and a pull cord reel 3.

[0024] The bed frame 1 is a rectangular frame with rounded corners 14. The upper and lower surfaces are covered with aluminum skin 16 (not shown), and the upper surface also has a sponge pad 17 (not shown). The bed frame 1 has an internal mounting cavity with several reinforcing strips 11 evenly arranged inside. The reinforcing strips 11 are arranged along the width of the bed frame 1. There is a mounting plate 12 in the center of the mounting cavity. The reinforcing strips 11 and the mounting plate 12 are fixed by hexagonal flathead screws 13.

[0025] The bed frame 1 has a pull cord tray 3 in the center of its interior, such as... Figure 3 , Figure 4 The cable reel 33 is annular, with its inner ring rotatably connected to the mounting plate 12. Specifically, the mounting plate 12 has several positioning pins 32, each surrounded by a nylon sleeve 34. The top of the nylon sleeve 34 is fixed with a retaining ring 31. The inner ring of the cable reel 33 fits over the nylon sleeve 34. The mounting plate 12 on the outer ring of the cable reel 33 has a limit rod 35, which is welded and fixed, contacting the outer ring of the cable reel 33. The positioning pins 32 and the mounting plate 12 limit the movement of the cable reel 33 while ensuring normal rotation. Several connecting ropes are connected to both sides of the cable reel 3. The connecting rope on the left side of the cable reel 3 extends from the left end of the bed frame 1, and the connecting rope on the right side of the cable reel 3 extends from the right end of the bed frame 1. The outer ring of the cable reel 3 is equipped with an annular guide rail to guide the connecting rope 5. A positioning wheel is located on the outer periphery to constrain the connecting rope within the annular guide rail. Specifically, positioning shafts 37 are welded to the reinforcing plates 11 at both ends of the cable reel 33. Positioning wheels 36 are fitted over the positioning shafts 37, and a retaining ring 38 is fixed to the top of the positioning wheels 36. The positioning wheels 36 are in contact with the outer periphery of the cable reel 33. When the cable reel 3 rotates, it simultaneously winds up or releases the connecting ropes at the left and right ends of the bed frame 1, causing the connecting ropes 5 at both ends of the bed frame to move synchronously, thus achieving smooth lifting and lowering of the bed frame 1.

[0026] In existing technologies, lifting beds are typically driven by motors. However, placing the motor inside the bed frame presents challenges in wiring and concealment, and also increases the bed frame's weight. Therefore, a winding mechanism 2 is installed inside the bed frame to address the issue of driving force for lifting. The winding mechanism 2 is connected to the connecting rope 5. The pull reel 3 unwinds the connecting rope, causing the winding mechanism 2 to stretch or compress and store energy. When the connecting rope 5 retracts, the winding mechanism 2 releases energy to pull the connecting rope 5 back. The winding mechanism 2 can be a tension spring, torsion spring, or coil spring, with a coil spring 20 being preferred.

[0027] Taking the coil spring 20 as an example, the coil springs 20 are respectively located at both ends inside the bed frame, and are centrally symmetrical with reference to the pull cord reel 3. Specifically, the coil spring 20 is connected to the bracket 27 via the shaft 21 and screw 22, and the bracket 27 is connected to the inner side wall of the bed frame 1. The connecting rope 5 located on one side of the pull cord reel 3 passes around the pull cord reel 33 and connects to the coil spring on the other side near the pull cord reel 33. That is, the connecting rope 5 located on the left side of the pull cord reel 3 passes around the pull cord reel 33 and connects to the coil spring 20 located at the right end of the bed frame. This provides sufficient space for the coil spring 20 to unfold.

[0028] like Figure 5 The bed frame 1 has a guide slide 24 inside, and the coil spring 20 is engaged on both sides within the slide 24. The slide 24 acts as a guide, guiding the coil spring 20 to unfold along the length of the bed frame 1 while preventing the coil spring 20 from twisting after unfolding. To match the distance difference between the bracket 27 and the side wall of the bed frame 1, the slide 24 is inclined, forming a certain angle with the side wall of the bed frame 1. The back of the slide 24 is connected to the side wall of the bed frame 1 via the bracket 23 and screws 26. The connecting rope 5 passes around the end of the pull cable reel 3 and is connected to the coil spring 20 via the tension plate 52.

[0029] like Figure 6 The bed frame 1 has pulley assemblies 4 at its four corners. These pulley assemblies 4 guide the connecting rope 5, which deflects along the length 1 of the bed frame. Specifically, with the axis of the pulley reel 3 as a reference (the axis of the pulley reel 3 is vertical), each pulley assembly 4 includes two supports: a horizontal support 48 and a vertical support 45. Horizontal and vertical rollers 47 are respectively installed on the horizontal and vertical supports 48 and 45. The connecting rope 5 slides around the outer circumference of the rollers 47, achieving directional deflection. The rollers 47 are made of nylon. The horizontal and vertical supports 48 and 45 are respectively equipped with baffles 41 and cylindrical pins 42, both close to the rollers 47, thus constraining the connecting rope 5 between the baffles 41 and the rollers 47, and between the cylindrical pins 42 and the rollers 47, preventing the connecting rope 5 from slipping off the rollers 47. The rollers 47 are installed with screws 43, and the shafts are installed with elastic retaining rings 44. The horizontal and vertical supports 48 are installed with screws 46.

[0030] During assembly, taking 4 connecting ropes 5 as an example (the number of connecting ropes 5 can also be 6, 8, 10, etc., but no less than 4), install the pull-line plate 3 in the middle of the bed frame, and install 4 sets of pull-line wheel assemblies 4 at both ends of the bed frame 1. With the pull-line plate 3 as a reference, install coil springs 20 and slide rails 24 symmetrically at both ends of the bed frame 1. Divide the connecting ropes 5 into two groups of 2 ropes each. Connect the two groups of connecting ropes 5 to both sides of the pull-line plate 3 respectively. It is best if the access points of the two groups of connecting ropes are located at the two ends of the same diameter of the pull-line plate 3. The connecting rope 5 on the left side of the pull-line plate 3 passes around the annular guide rail of the pull-line plate 3 and connects to the coil spring 20 on the right side of the bed frame 1. The same applies to the right side. The connecting rope 5 on the left side of the pull-line plate 3 passes around the roller 47 of the pull-line wheel assembly 4 from the left end of the bed frame 1, and the connecting rope 5 on the right side of the pull-line plate 3 passes around the roller 47 of the pull-line wheel assembly 4 from the left end of the bed frame 1 and extends out. Fix the other end of the connecting rope 5 to the car body wall with screws 51, and the assembly is complete.

[0031] When in use, the initial tension of the coil spring 20 is set to be slightly greater than the weight of the bed frame 1. When the bed frame 1 is lowered, a certain tension needs to be applied to the bed frame 1 to overcome the force of the coil spring 20. When the bed frame 1 is raised, the coil spring 20 has stored energy and has a tendency to retract. At this time, only a small force needs to be applied to manually raise the bed frame.

Claims

1. A lifting bunk bed comprising a bed frame (1), characterized in that, The bed frame (1) is internally connected to the middle of the pull wire disc (3), the pull wire disc (3) is connected to several connecting ropes (5) on both sides, the connecting rope (5) on one side of the pull wire disc (3) is stretched out from one end of the bed frame (1), the pull wire disc (3) rotates, and the connecting rope (5) at both ends of the bed frame is wound or released, the bed frame (1) is internally provided with a winding element (2), the winding element (2) is connected to the connecting rope (5), the winding element (2) is stretched or compressed to store energy when the pull wire disc (3) rotates, and the winding element (2) is one of a tension spring, a torsion spring or a coil spring.

2. The lifting bunk bed of claim 1, wherein, The winding element (2) is a coil spring (20), the coil spring (20) is located at both ends of the bed frame, the connecting rope (5) on one side of the pull wire disc (3) is wound around the pull wire disc (3) and the coil spring (20) close to the other side of the pull wire disc (3).

3. The lifting bunk bed of claim 2, wherein, The initial tension of the coil spring (20) is not less than the weight of the bed frame.

4. The lifting bunk bed of claim 2, wherein, The inside of the bed frame (1) is provided with inclined slideways (24) on both sides, the coil spring (20) is slidably connected to the slideways (24), and the slideways (24) guide the coil spring (20) to expand along the length direction of the bed frame (1).

5. A lifting bunk bed according to any one of claims 1 to 4, characterized in that The outer ring surface of the pull wire disc (3) is provided with an annular guide rail for guiding the connecting rope (5), and the outer periphery is provided with a positioning wheel (36) for constraining the connecting rope (5) in the annular guide rail.

6. A lifting bunk bed as claimed in any one of claims 1 to 4, characterized in that The bed frame (1) is provided with a plurality of groups of pull wire wheel assemblies (4) for guiding the connecting rope (5) to be deflected by the length direction and the height direction of the bed frame (1).

7. The lifting bunk bed of claim 6, wherein, Each group of the pull wire wheel assembly (4) comprises a first roller and a second roller, the axis of the first roller is parallel to the pull wire disc (3), the axis of the second roller is perpendicular to the pull wire disc (3), and the outer sides of the first roller and the second roller are respectively provided with a baffle and a cylindrical pin for constraining the connecting rope (5) on the roller.

8. A lifting bunk bed as claimed in any one of claims 1 to 4, characterized in that The end of the connecting rope (5) stretched out of the bed frame is provided with a screw (51) for connecting the vehicle body.

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