Back bed board lifting mechanism for nursing bed

Abstract

The back bed board lifting mechanism comprises a back bed board, the center of the front portion of the bottom face of the back bed board is hinged to the front end of a telescopic device, the middle rear portion of the bottom face of the side edge of the back bed board is hinged to the rear end of a pull rod, and the front end of the pull rod is hinged to the front portion of a side beam of a central bed frame. A cross beam is fixed below the middle front part of a side beam of the central bed frame, the middle part of the cross beam is hinged with the rear end of a telescopic device, the bottom end of a side edge of the back bed plate is hinged with the rear end of a connecting rod, and the front end of the connecting rod is hinged with the middle front part of the central bed frame. According to the mechanism, a hinged connection mode of a back bed board and a hip bed board of a traditional nursing bed is abandoned, and innovative design is adopted, so that the back bed board is inclined upwards to be away from the hip bed board when the back bed board of the traditional nursing bed is lifted, and the extrusion feeling caused to the back of a user when the back bed board is lifted can be avoided; therefore, the back skin of the user is prevented from being injured by extrusion and friction force of the back bed board.

Description

Technical Field

[0001] This utility model relates to the field of nursing equipment technology, and in particular to a backrest lifting mechanism for a nursing bed. Background Technology

[0002] Nursing beds are medical assistive devices designed specifically for people with limited mobility (such as long-term bedridden patients, the elderly, postoperative recovering patients, paralyzed patients, etc.). Their core function is to achieve body position adjustment through mechanical or electric structures, thereby improving nursing efficiency and the user's quality of life.

[0003] Nursing beds typically have a backrest that can be raised 0-75°, allowing patients to transition from a supine to a sitting position. This can reduce pulmonary effusion, lower the risk of aspiration pneumonia, and alleviate poor blood circulation caused by prolonged lying down. Furthermore, it facilitates light activity, slows muscle atrophy, and boosts confidence in recovery; it also helps patients participate in social activities, reduces depression caused by prolonged bed rest, and improves their quality of life.

[0004] Existing nursing beds typically have hinge mechanisms on the backrest and hiprest panels. When raised, the backrest panel rises upward around the hinge axis (e.g., Figure 1 As shown in the figure (100 is the backrest bed board and 200 is the buttocks bed board), this structural design ignores the fact that the waist needs to maintain an appropriate distance from the bed board when the human body is in a sitting position. If the waist is still at the same distance as when lying flat, the bed board will cause a feeling of compression on the human back when sitting. In severe cases, it can also cause damage to the user's back skin due to the compression and friction of the backrest bed board.

[0005] Therefore, there is an urgent need in this field to develop a novel backrest lifting mechanism. Utility Model Content

[0006] The purpose of this invention is to provide a backrest lifting mechanism for a nursing bed.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A backrest lifting mechanism for a nursing bed includes a backrest board. The front center of the bottom surface of the backrest board is hinged to the front end of a telescopic device. The rear middle part of the bottom surface of the side edge of the backrest board is hinged to the rear end of a pull rod. The front end of the pull rod is hinged to the front part of a side beam of a central bed frame. A crossbeam is fixed below the front middle part of the side beam of the central bed frame. The middle part of the crossbeam is hinged to the rear end of the telescopic device. The bottom end of the side edge of the backrest board is hinged to the rear end of a connecting rod. The front end of the connecting rod is hinged to the front middle part of the central bed frame.

[0009] The telescopic device is a pneumatic cylinder, a hydraulic cylinder, or an electric push rod.

[0010] The number of the pull rods is two, which are respectively hinged to the middle and rear part of the bottom surface of the left and right side edges of the backrest bed board.

[0011] The number of connecting rods is two, which are respectively hinged to the bottom ends of the left and right side edges of the backrest bed board.

[0012] Compared with the prior art, the outstanding advantages of this utility model are:

[0013] The backrest lifting mechanism of this utility model for a nursing bed abandons the traditional hinged connection between the backrest and buttocks board of a nursing bed. It adopts an innovative design that allows the backrest to be lifted diagonally upward away from the buttocks board, thereby avoiding the squeezing sensation on the user's back when the backrest is lifted, and thus preventing damage to the user's back skin caused by the squeezing and friction of the backrest.

[0014] The backrest lifting mechanism for the nursing bed described in this utility model will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0015] Figure 1 This is a side view of a nursing bed with the backrest raised in the prior art.

[0016] Figure 2 This is a side view of the backrest lifting mechanism of the nursing bed of this utility model after it has been lifted.

[0017] Figure 3 This is a three-dimensional schematic diagram of the backrest lifting mechanism of the nursing bed of this utility model after it has been lifted.

[0018] Figure 4 This is a schematic diagram showing the backrest lifting mechanism of the present invention in use in a nursing bed.

[0019] Among them, 100 is the backrest bed board, and 200 is the buttocks bed board.

[0020] 1-Backrest board, 2-Central bed frame, 3-Tie rod, 4-Connecting rod, 5-Telescopic device, 6-First upright, 7-Crossbeam, 8-Fixed frame, 9-Outer side bed board, 10-Second upright. Detailed Implementation

[0021] In this utility model, "front, front or front end" and "rear, rear or rear end" are all based on the user lying on the nursing bed. The direction closer to the user's head is the front, front or front end, and the direction farther away from the user's head is the rear, rear or rear end.

[0022] like Figure 2-3As shown, a backrest lifting mechanism for a nursing bed includes a backrest 1. The front center of the bottom surface of the backrest 1 is hinged to the front end of a telescopic device 5. The rear middle part of the bottom surface of the side edge of the backrest 1 is hinged to the rear end of a pull rod 3. The front end of the pull rod 3 is hinged to the front part of the bottom surface of the side beam of a central bed frame 2. A first column 6 and a second column 10 are provided on the bottom surface of the front middle part of the side beam of the central bed frame 2. The first column 6 and the second column 10 are arranged sequentially along the direction from the waist to the back of the human body. The first column 6 is fixedly connected to a crossbeam 7. The middle part of the crossbeam 7 is hinged to the rear end of the telescopic device 5. The bottom end of the side edge of the backrest 1 is hinged to the rear end of a connecting rod 4. The front end of the connecting rod 4 is hinged to the upper part of the second column 10. The first column 6 and the second column 10 are both integral with the central bed frame 2 and can be considered as part of the central bed frame 2.

[0023] The middle and rear portion of connecting rod 4 bends upward at an obtuse angle; in other advantageous embodiments, connecting rod 4 can also be a straight rod. The telescopic device 5 can be a cylinder, a hydraulic cylinder, or an electric actuator.

[0024] There are two first uprights 6, which are fixedly connected to the left and right side beams of the central bed frame 2 respectively. The left and right ends of the crossbeam 7 are connected to the two first uprights 6. There are two second uprights 10, which are fixedly connected to the left and right side beams of the central bed frame 2 respectively. There are two tie rods 3, which are hinged to the middle and rear parts of the bottom surface of the left and right side edges of the backrest bed board 1 respectively. There are two connecting rods 4, which are hinged to the bottom ends of the left and right side edges of the backrest bed board 1 respectively.

[0025] When the telescopic device 5 retracts, the rear end of the pull rod 3 rotates downward toward the bed board closer to the buttocks, and the rear end of the connecting rod 4 and the bottom end of the back bed board 1 move together toward the bed board closer to the buttocks, so that the back bed board 1 moves closer to the bed board closer to the buttocks as it falls.

[0026] When the telescopic device 5 extends, the rear end of the pull rod 3 rotates upward along the direction away from the buttocks bed board, and the rear end of the connecting rod 4 and the bottom end of the back bed board 1 move together in the direction away from the buttocks bed board, so that the back bed board 1 is raised and moves diagonally upward away from the buttocks bed board. This can avoid the squeezing sensation on the user's back when the back bed board of the traditional nursing bed is raised, and thus avoid damage to the user's back skin caused by the squeezing and friction of the back bed board.

[0027] The backrest lifting mechanism of this nursing bed is used in the following ways: Figure 4 As shown. The backrest bed board 1 is connected to the upper body outer bed board 9 on the left and right sides respectively. When the backrest bed board 1 is raised, the upper body outer bed board 9 is raised together with the backrest bed board 1.

[0028] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. They should not be construed as limitations on the present utility model. Any modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A backrest lifting mechanism for a nursing bed, characterized in that: The bed includes a backrest board (1), the front center of the bottom surface of the backrest board (1) is hinged to the front end of the telescopic device (5), the middle and rear part of the bottom surface of the side edge of the backrest board (1) is hinged to the rear end of the pull rod (3), the front end of the pull rod (3) is hinged to the front part of the side beam of the central bed frame (2), a crossbeam (7) is fixed below the middle front part of the side beam of the central bed frame (2), the middle part of the crossbeam (7) is hinged to the rear end of the telescopic device (5), the bottom end of the side edge of the backrest board (1) is hinged to the rear end of the connecting rod (4), and the front end of the connecting rod (4) is hinged to the middle front part of the central bed frame (2).

2. A back deck raising mechanism for a care bed according to claim 1, characterised in that: The telescopic device (5) is a cylinder, a hydraulic cylinder, or an electric push rod.

3. The care bed back deck raising mechanism according to claim 1, characterized in that: There are two pull rods (3), which are respectively hinged to the middle and rear part of the bottom surface of the left and right side edges of the backrest bed board (1).

4. The care bed back deck raising mechanism according to claim 1, characterized in that: There are two connecting rods (4), which are respectively hinged to the bottom ends of the left and right side edges of the backrest bed board (1).

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