Sleeping berth bed with backrest angle adjusting function

Abstract

The invention discloses a sleeping berth bed with a backrest angle adjusting function. The sleeping berth bed comprises two side lifting bed plates, a middle fixing bed plate, a fixing frame, two side bed plate angle adjusting devices, angle adjusting handles, armrest unlocking devices and armrest assemblies. The middle fixed bed board is arranged in the middle of the fixed frame and connected with the two-side lifting bed boards on the front side and the rear side through hinges, the two-side bed board angle adjusting devices are arranged below the two-side lifting bed boards and fixedly arranged on the fixed frame, and the angle adjusting handles are arranged on the side portions of the fixed frame. The angle adjusting handle is connected with the bed board angle adjusting devices on the two sides; the armrest assemblies are installed on the left side and the right side of the middle fixed bed board, and armrest unlocking devices are arranged on the armrest assemblies. The ratchet wheel and the pawl are adopted for transmission, the hydraulic damper is matched, controllable adjustment of the angle of the backrest of the sleeping berth bed is achieved, the coil spring is used for assisting, convenience of manual adjustment of the angle of the backrest is improved, and comfort is improved.

Description

Technical Field

[0001] The present invention relates to the field of sleeper beds, and particularly to a sleeper bed with a backrest angle adjustment function. Background Art

[0002] Currently, the EMUs are usually equipped with fixed sleeper beds for passengers to sit and sleep. The fixed sleeper beds are made by welding the bed board steel pipes and fastened to the car body with screws, and mattresses are laid on them. The fixed installation has a simple structure, but it cannot meet the requirements of passengers for adjusting sitting postures.

[0003] Therefore, it is necessary to specifically develop a new type of sleeper bed to add a backrest angle adjustment function and improve comfort. Summary of the Invention

[0004] Object of the Invention: Aiming at the deficiencies and defects of the prior art, the present invention provides a sleeper bed with a backrest angle adjustment function, which uses a ratchet and pawl drive, cooperates with a hydraulic damper, realizes the controllable adjustment of the backrest angle of the sleeper bed, uses a coil spring to assist, increases the convenience of manually adjusting the backrest angle, and improves comfort.

[0005] Technical Solution: A sleeper bed with a backrest angle adjustment function according to the present invention is characterized in that it includes two side lifting bed boards, a middle fixed bed board, a fixed frame, two side bed board angle adjustment devices, an angle adjustment handle, an armrest unlocking device and an armrest assembly; the middle fixed bed board is arranged in the middle of the fixed frame, the middle fixed bed board is connected to the two side lifting bed boards on the front and back sides through hinges, two side bed board angle adjustment devices are arranged below the two side lifting bed boards, the two side bed board angle adjustment devices are fixedly arranged on the fixed frame, an angle adjustment handle is arranged on the side of the fixed frame, and the angle adjustment handle is connected to the two side bed board angle adjustment devices; the armrest assembly is installed on the left and right sides of the middle fixed bed board, and an armrest unlocking device is arranged on the armrest assembly.

[0006] Among them, the two side lifting bed boards include short sides of the movable bed board frame, a first buckle for fixing the mattress, a middle support of the movable bed board and a top skin of the movable bed board; the short sides of the movable bed board frame, the first buckle, the middle support of the movable bed board and the top skin of the movable bed board are welded to form the two side lifting bed boards.

[0007] Among them, the middle fixed bed board includes a cross bar of the fixed frame, a hinge installation bar, a long side of the fixed bed board frame, a second buckle and a top skin of the fixed bed board; the cross bar of the fixed frame, the hinge installation bar, the long side of the fixed bed board frame, the second buckle and the top skin of the fixed bed board are welded to form the middle fixed bed board.

[0008] Among them, the fixed frame includes short sides of the fixed frame, long sides of the fixed frame and a middle cross bar of the fixed frame; the short sides of the fixed frame, the long sides of the fixed frame and the middle cross bar of the fixed frame are welded to form the fixed frame.

[0009] Among them, the angle adjustment device for the two side bed boards includes the first bolt, connecting pipe, roller, support rod, pawl shaft, coil spring, ratchet wheel, unlocking plate, pawl, support shaft, housing, inner support, second bolt, adjusting bolt and hydraulic damper.

[0010] Among them, the angle adjustment device for the two side bed boards is connected to the fixed frame through the housing. In the locked state, the handle torsion spring provides a supporting force, and the pawls on both sides are engaged with the ratchet wheel to limit the rotation of the ratchet wheel; when unlocking, the unlocking plate drives the pawl shaft and the pawl to rotate, the coil spring drives the support rod and the support shaft to rotate, the support rod drives the roller to move, and drives the two side lifting bed boards to lift. During this process, the movement is stabilized through the hydraulic damper; the support rods are connected through the connecting pipe, the inner support is fixed through the first bolt and the second bolt, and several adjusting bolts are provided on the side of the housing.

[0011] Among them, the angle adjustment handle includes a pin, a connecting shaft, a handle shaft connecting plate, a handle shaft, a rotating shaft, a handle and a handle torsion spring; the connecting shaft is fixed through the pin, and the connecting shaft, the handle shaft connecting plate, the handle shaft, the rotating shaft and the handle are connected in sequence, and the handle is connected with the handle torsion spring; the handle torsion spring provides a restoring force. When in use, the connecting shaft drives the unlocking plate to unlock the angle adjustment device for the two side bed boards.

[0012] Among them, the armrest unlocking device adopts a self-locking indexing pin.

[0013] Among them, the armrest assembly includes an armrest rotating shaft, an armrest fixing seat, an armrest connecting block and an armrest; both sides of the armrest are sequentially connected to the armrest connecting block and the armrest fixing seat through self-locking indexing pins; the armrest assembly is connected to the fixed frame through the armrest fixing seats at both ends; the self-locking indexing pin is matched with the hole position on the armrest connecting block to achieve locking.

[0014] Among them, the fixed frame is located on the rail vehicle.

[0015] Advantageous effects: Compared with the prior art, the present invention has the following remarkable advantages: The present invention adopts the transmission of the ratchet wheel and the pawl, and cooperates with the hydraulic damper to realize the controllable adjustment of the backrest angle of the sleeping berth bed. The coil spring is used for assistance, which increases the convenience of manually adjusting the backrest angle and improves the comfort. The present invention effectively solves the passenger's demand for adjusting the backrest angle of the sleeping berth bed, and is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present invention;

[0017] Figure 2 is a schematic structural diagram of the two side lifting bed boards of the present invention;

[0018] Figure 3Schematic diagram of the structure of the intermediate fixed bed board of the present invention;

[0019] Figure 4 Schematic diagram of the structure of the fixed frame of the present invention;

[0020] Figure 5 Schematic diagram of the structure of the angle adjustment device for the bed boards on both sides of the present invention;

[0021] Figure 6 Schematic diagram of the structure of the angle adjustment handle of the present invention;

[0022] Figure 7 Schematic diagram of the structure of the armrest unlocking device of the present invention;

[0023] Figure 8 Schematic diagram of the structure of the armrest assembly of the present invention;

[0024] In the figure, 1 are the bed boards lifted on both sides; 2 is the intermediate fixed bed board; 3 is the fixed frame; 4 is the angle adjustment device for the bed boards on both sides; 5 is the angle adjustment handle; 6 is the armrest unlocking device; 7 is the armrest assembly; 8 is the short side of the movable bed board frame; 9 is the first buckle; 10 is the intermediate support of the movable bed board; 11 is the upper skin of the movable bed board; 12 is the horizontal bar of the fixed frame; 13 is the hinge installation bar; 14 is the long side of the fixed bed board frame; 15 is the second buckle; 16 is the upper skin of the fixed bed board; 17 is the short side of the fixed frame; 18 is the long side of the fixed frame; 19 is the intermediate horizontal bar of the fixed frame; 20 is the first bolt; 21 is the connecting pipe; 22 is the roller; 23 is the support rod; 24 is the pawl shaft; 25 is the coil spring; 26 is the ratchet; 27 is the unlocking plate; 28 is the pawl; 29 is the support shaft; 30 is the housing; 31 is the inner support; 32 is the second bolt; 33 is the adjusting bolt; 34 is the hydraulic damper; 35 is the pin; 36 is the connecting shaft; 37 is the handle shaft connecting plate; 38 is the handle shaft; 39 is the rotating shaft; 40 is the handle; 41 is the handle torsion spring; 42 is the self-locking indexing pin; 43 is the armrest rotating shaft; 44 is the armrest fixing seat; 45 is the armrest connecting block. Detailed implementation manners

[0025] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and specific implementation manners.

[0026] As Figure 1, the sleeper bed with a backrest angle adjustment function according to the present invention includes two side-lifting bed boards 1, a middle fixed bed board 2, a fixed frame 3, two side-bed-board angle adjustment devices 4, an angle adjustment handle 5, an armrest unlocking device 6 and an armrest assembly 7; the middle fixed bed board 2 is arranged in the middle of the fixed frame 3, and the middle fixed bed board 2 is connected to the two side-lifting bed boards 1 on the front and back sides through hinges. The two side-lifting bed boards 1 are each provided with a two-side bed-board angle adjustment device 4 below, and the two side-bed-board angle adjustment devices 4 are fixedly arranged on the fixed frame 3. An angle adjustment handle 5 is arranged on the side of the fixed frame 3, and the angle adjustment handle 5 is connected to the two side-bed-board angle adjustment devices 4; the armrest assembly 7 is installed on the left and right sides of the middle fixed bed board 2, and the armrest unlocking device 6 is arranged on the armrest assembly 7.

[0027] As Figure 2 , the two side-lifting bed boards 1 of the present invention include a short side 8 of the movable bed board frame, a buckle plate 9 for fixing the mattress, an intermediate support bar 10 of the movable bed board and a top skin 11 of the movable bed board; the short side 8 of the movable bed board frame, the buckle plate 9, the intermediate support bar 10 of the movable bed board and the top skin 11 of the movable bed board are welded to form the two side-lifting bed boards 1.

[0028] As Figure 3 , the middle fixed bed board 2 of the present invention includes a horizontal bar 12 of the fixed frame, a hinge installation bar 13, a long side 14 of the fixed bed board frame, a buckle plate 15 and a top skin 16 of the fixed bed board; the horizontal bar 12 of the fixed frame, the hinge installation bar 13, the long side 14 of the fixed bed board frame, the buckle plate 15 and the top skin 16 of the fixed bed board are welded to form the middle fixed bed board 2.

[0029] As Figure 4 , the fixed frame 3 of the present invention includes a short side 17 of the fixed frame, a long side 18 of the fixed frame and an intermediate cross bar 19 of the fixed frame; the short side 17 of the fixed frame, the long side 18 of the fixed frame and the intermediate cross bar 19 of the fixed frame are welded to form the fixed frame 3.

[0030] As Figure 5, the angle adjustment device 4 for both sides of the bed board of the present invention includes a first bolt 20, a connecting pipe 21, a roller 22, a support rod 23, a pawl shaft 24, a coil spring 25, a ratchet wheel 26, an unlocking plate 27, a pawl 28, a support shaft 29, a housing 30, an inner support 31, a second bolt 32, an adjustment bolt 33 and a hydraulic damper 34. The angle adjustment device 4 for both sides of the bed board is connected to the fixed frame 3 through the housing 30. In the locked state, the handle torsion spring 41 provides a supporting force, and the pawls 28 on both sides are engaged with the ratchet wheel 26 to limit the rotation of the ratchet wheel 26; when unlocking, the unlocking plate 27 drives the pawl shaft 24 and the pawl 28 to rotate, and the coil spring 25 drives the support rod 23 and the support shaft 29 to rotate. The support rod 23 drives the roller 22 to move and drives the lifting bed boards 1 on both sides to lift. During this process, the movement is stabilized through the hydraulic damper 34; the support rods 23 are connected through the connecting pipe 21, and the inner support 31 is fixed through the first bolt 20 and the second bolt 32. Several adjustment bolts 33 are provided on the side of the housing 30.

[0031] As Figure 6 And Figure 7 , the angle adjustment handle 5 of the present invention includes a pin 35, a connecting shaft 36, a handle shaft connecting plate 37, a handle shaft 38, a rotating shaft 39, a handle 40 and a handle torsion spring 41; the connecting shaft 36 is fixed through the pin 35, and the connecting shaft 36, the handle shaft connecting plate 37, the handle shaft 38, the rotating shaft 39, and the handle 40 are connected in sequence, and the handle 40 is connected to the handle torsion spring 41; the handle torsion spring 41 provides a restoring force. When in use, the connecting shaft 36 drives the unlocking plate 27 to unlock the angle adjustment device 4 for both sides of the bed board.

[0032] As Figure 8 , the armrest unlocking device 6 adopts a self-locking indexing pin 42. The armrest assembly 7 includes an armrest rotating shaft 43, an armrest fixed seat 44, an armrest connecting block 45 and an armrest; both sides of the armrest are sequentially connected to the armrest connecting block 45 and the armrest fixed seat 44 through the self-locking indexing pin 42; the armrest assembly 7 is connected to the fixed frame 3 through the armrest fixed seats 44 at both ends; the self-locking indexing pin 42 is matched with the hole positions on the armrest connecting block 45 to achieve locking.

[0033] The fixed frame of the present invention is located on a rail vehicle; the fixed frame can be connected to the carriage wall through bolts and nuts; the middle fixed bed board and the fixed frame are connected by hexagon head bolts; the angle adjustment devices for both sides of the bed board are placed under the lifting bed boards on both sides and are fixed to the fixed frame through small head semi-hexagon rivet nuts and hexagon head bolts; the angle adjustment handle is connected to the fixed frame by internal hexagon low head cylinder head screws; the armrest assembly is installed on the side of the fixed frame by internal hexagon countersunk head screws. The present invention adopts ratchet and pawl transmission, combined with a hydraulic damper, to achieve controllable adjustment of the backrest angle of the sleeping berth bed. Using a coil spring for assistance increases the convenience of manually adjusting the backrest angle and improves comfort. The present invention effectively solves the passenger's demand for adjusting the backrest angle of the sleeping berth bed, and is safe and reliable.

Claims

1. A sleeper bed with backrest angle adjustment function, characterized in that: The invention comprises a lifting bed board (1) on both sides, a middle fixed bed board (2), a fixed frame (3), a bed board angle adjustment device (4) on both sides, an angle adjustment handle (5), an armrest unlocking device (6) and an armrest assembly (7); the middle fixed bed board (2) is arranged in the middle of the fixed frame (3); the middle fixed bed board (2) is connected to the lifting bed boards (1) on both sides at the front and rear sides through hinges; the lifting bed boards (1) on both sides are provided with a bed board angle adjustment device (4) on both sides; the bed board angle adjustment device (4) on both sides is fixedly arranged on the fixed frame (3); an angle adjustment handle (5) is arranged on the side of the fixed frame (3); the angle adjustment handle (5) is connected to the bed board angle adjustment device (4) on both sides; the armrest assembly (7) is installed on the left and right sides of the middle fixed bed board (2); and the armrest unlocking device (6) is arranged on the armrest assembly (7).

2. The sleeper bed with backrest angle adjustment function according to claim 1, characterized in that: The two-side lifting bed board (1) comprises a short side of a movable bed board frame (8), a gusset plate (9) for fixing a mattress, a middle support block (10) of the movable bed board and a movable bed board upper skin (11); the short side of the movable bed board frame (8), the gusset plate (9), the middle support block (10) of the movable bed board and the movable bed board upper skin (11) are welded to form the two-side lifting bed board (1).

3. The sleeper bed with backrest angle adjustment function according to claim 1, characterized in that: The intermediate fixed bed board (2) comprises a fixed frame cross piece (12), a folding installation piece (13), a fixed bed board frame long side (14), a second gusset plate (15) and a fixed bed board upper skin (16); the fixed frame cross piece (12), the folding installation piece (13), the fixed bed board frame long side (14), the second gusset plate (15) and the fixed bed board upper skin (16) are welded to form the intermediate fixed bed board (2).

4. The sleeper bed with backrest angle adjustment function according to claim 1, characterized in that: The fixed frame (3) comprises a fixed frame short side (17), a fixed frame long side (18) and a fixed frame middle cross piece (19); the fixed frame short side (17), the fixed frame long side (18) and the fixed frame middle cross piece (19) are welded to form the fixed frame (3).

5. The sleeper bed with backrest angle adjustment function according to claim 1, characterized in that: The bed board angle adjustment device (4) on both sides comprises a bolt 1 (20), a connecting pipe (21), a roller (22), a support rod (23), a pawl shaft (24), a coil spring (25), a ratchet (26), an unlocking plate (27), a pawl (28), a support shaft (29), a cover (30), an inner support (31), a bolt 2 (32), an adjustment bolt (33) and a hydraulic damper (34).

6. The sleeper bed with backrest angle adjustment function according to claim 5, characterized in that: The bed board angle adjustment device (4) on both sides is connected to the fixed frame (3) through the cover (30). In the locked state, the handle torsion spring (41) provides support force, and the pawls (28) on both sides are engaged with the ratchet (26) to limit the rotation of the ratchet (26); when unlocked, the unlocking plate (27) drives the pawl shaft (24) and the pawl (28) to rotate, and the coil spring (25) drives the support rod (23) and the support shaft (29) to rotate, and the support rod (23) drives the roller (22) to move, and drives the lifting bed boards (1) on both sides to lift. In this process, the movement is stabilized by hydraulic damping (34); the support rods (23) are connected by connecting pipes (21), and the inner support (31) is fixed by bolts one (20) and bolts two (32). A plurality of adjustment bolts (33) are provided on the side of the cover (30).

7. The sleeper bed with backrest angle adjustment function according to claim 1, characterized in that: The angle adjustment handle (5) comprises a pin (35), a connecting shaft (36), a handle shaft connecting plate (37), a handle shaft (38), a rotating shaft (39), a handle (40) and a handle torsion spring (41); the connecting shaft (36) is fixed by the pin (35); the connecting shaft (36), the handle shaft connecting plate (37), the handle shaft (38), the rotating shaft (39) and the handle (40) are connected in sequence; the handle (40) is connected to the handle torsion spring (41); the handle torsion spring (41) provides a reset force; when in use, the connecting shaft (36) drives the unlocking plate (27) to unlock the bed board angle adjustment devices (4) on both sides.

8. The sleeper bed with backrest angle adjustment function according to claim 1, characterized in that: The armrest unlocking device (6) adopts a self-locking indexing pin (42).

9. The sleeper bed with backrest angle adjustment function according to claim 1, characterized in that: The armrest assembly (7) comprises an armrest rotating shaft (43), an armrest fixing seat (44), an armrest connecting block (45) and an armrest; the two sides of the armrest are respectively connected to the armrest connecting block (45) and the armrest fixing seat (44) in sequence through self-locking indexing pins (42); the armrest assembly (7) is connected to the fixed frame (3) through the armrest fixing seats (44) at both ends; the self-locking indexing pin (42) cooperates with the hole position on the armrest connecting block (45) to achieve locking.

10. The sleeper bed with backrest angle adjustment function according to any one of claims 1 to 9, characterized in that: The fixed frame (3) is located on the rail vehicle.

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