Electrically powered sickbed

Abstract

This invention discloses an electric hospital bed, relating to the field of hospital beds. It provides an electric hospital bed that, in addition to the functions of a conventional electric hospital bed, also enables prone ventilation. The electric hospital bed includes an upper bed beam, a front bed board, a second front bed board, a front bed board drive mechanism, a bed board synchronization mechanism, a bed board actuation mechanism, a headrest, and a headrest drive mechanism. The upper bed beam has a groove for the front bed board. The first and second front bed boards rest on the upper bed beam, with the rear ends of the second front bed board hinged to the upper bed beam. The first front bed board is hinged to the second front bed board, and the first front bed board can rotate 180° and be positioned within the groove. The front bed board drive mechanism drives the second front bed board to rotate upwards. The bed board actuation mechanism actuates the first bed board, causing it to swing forward or backward. The bed board synchronization mechanism is located within the second bed board and can connect to the first front bed board, enabling the first and second front bed boards to rotate synchronously. The headrest is located below the first front bed board, and the headrest drive mechanism drives the headrest to move up and down.

Description

Technical Field

[0001] This invention relates to the field of hospital beds, and more particularly to an electric hospital bed. Background Technology

[0002] An electric hospital bed is a bed in which the bed board and other parts of the bed are driven by an electric mechanism. Current electric hospital beds typically have three bed boards, such as... Figure 14 As shown, the bed board near the head of the bed can be rotated and lifted upwards, allowing the patient to sit up or semi-recline by leaning against it. The other two bed boards can be arched to allow the patient's legs to bend. The electrically driven bed boards replace manual adjustments, making them safer and more convenient.

[0003] Prone ventilation refers to mechanical ventilation while the patient is in a prone position, suitable for symptoms such as acute respiratory distress. These patients typically undergo tracheotomy, with an endotracheal tube inserted into the larynx and connected to a ventilator. If the patient lies entirely prone on the bed, the bed will compress the endotracheal tube and ventilator tubing, making procedures such as suctioning inconvenient. Currently, hospitals usually use a support frame at one end of the bed, with a small gap between the support frame and the bed. The patient's head protrudes from the bed, resting against the support frame, with the neck facing the gap between the support frame and the bed. This allows the endotracheal tube and ventilator tubing to pass through this gap, and also allows for suctioning and other nursing procedures. The applicant has also applied for several patents related to this support frame, such as ZL202220941102.3 and ZL202120847166.2.

[0004] While the above method can solve the ventilation problem for patients with endotracheal tubes, it also has some disadvantages. For example, it adds a support frame to one end of the bed, taking up limited bed space; the support frame is also easily bumped and moved. Position, etc. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an electric hospital bed that, in addition to having the functions of a conventional electric hospital bed, can also perform prone ventilation.

[0006] The technical solution adopted to solve the above problems is as follows: The electric hospital bed includes an upper bed beam, a bed base, a bed board, a front bed board drive mechanism, a bed board synchronization mechanism, a bed board actuation mechanism, a headrest, and a headrest drive mechanism; there are two upper bed beams, which are spaced apart, and each upper bed beam has a groove for the front bed board; the bed board includes a front bed board and a front second bed board, which are arranged sequentially from front to back and rest on the upper bed beams on both sides. The rear end of the front second bed board is hinged to the upper bed beam, and the lower side of the front second bed board has a groove for the synchronization mechanism. The front bed board is hinged to the front second bed board, and the front bed board is shorter than the front second bed board. The front bed board can rotate 180° and be placed in the groove of the front bed board; the bed base is located below the upper bed beams, and the front bed board drive mechanism is set on the bed base and can drive the front second bed board to rotate upward; The bed board actuation mechanism is connected to the upper bed beam. When the first two bed boards rotate upward and the first bed board hangs down naturally, the bed board actuation mechanism can actuate the first bed board to make it swing forward or backward. The bed board synchronization mechanism is located in the synchronization mechanism slot and is connected to the front two bed boards. The bed board synchronization mechanism can be connected to the front bed board so that the front bed board and the front two bed boards rotate synchronously. The headrest is located below the front bed board. The headrest drive mechanism is connected to the bed base and can drive the headrest to move up and down. There is a distance between the headrest and the two upper bed beams in the left and right directions.

[0007] Furthermore, the front bed board drive mechanism includes a first support, a first screw, a first guide rod, a first motor, a first movable seat, and a first bracket; there are two first supports, which are spaced apart in the front-rear direction and connected to the bed base; there are two first guide rods, which are spaced apart in the front-rear direction and whose two ends are mounted on the first supports; the first screw is located between the two first guide rods and whose two ends are mounted on the first support; the first motor is connected to the first screw; the first movable seat is fitted onto the first guide rod and the first screw and is threadedly connected to the first screw; the lower end of the first bracket is hinged to the first movable seat, and the upper end of the first bracket is hinged to the front second bed board.

[0008] Furthermore, the bed board actuation mechanism includes a rotating shaft, an actuation plate, and a third motor. The rotating shaft is mounted on the upper bed beam, the actuation plate is connected to the rotating shaft, the third motor is mounted on the upper bed beam and can drive the rotating shaft, and the actuation plate can actuate the previous bed board.

[0009] Furthermore, the bed board synchronization mechanism includes a first electric telescopic rod, a connecting rod, two insert sleeves, and two insert rods. The first electric telescopic rod is arranged in the front-to-back direction. The two insert sleeves are located on the left and right sides of the first electric telescopic rod. The insert rods are inserted into the insert sleeves and cooperate with them. The connecting rod connects the two insert rods and is connected to the first electric telescopic rod. The front bed board has two insertion holes. When the first electric telescopic rod extends, the insert rods are inserted into the insertion holes.

[0010] Furthermore, the head pad has a mouth, nose and neck groove, and the head pad includes a head pad base plate and a flexible pad connected to the head pad base plate.

[0011] Furthermore, the headrest drive mechanism includes a second electric telescopic rod, two guide sleeves, and two third guide rods. The second electric telescopic rod is vertically arranged, and its upper and lower ends are connected to the bed base and the headrest, respectively. The two guide sleeves are vertically arranged on the left and right sides of the second electric telescopic rod and connected to the bed base. The third guide rods are inserted into the guide sleeves and cooperate with them. The third guide rods are connected to the headrest.

[0012] Furthermore, the electric hospital bed includes a rear bed board drive mechanism located behind the front bed board drive mechanism; the bed board includes a rear first bed board and a rear second bed board, the rear first bed board is located behind the front second bed board and is hinged to the upper bed beam, the rear second bed board is located behind the rear first bed board and is hinged to the rear first bed board, and both sides of the rear first bed board and the rear second bed board rest on the upper bed beam; the rear bed board drive mechanism is set on the bed base and can drive the rear first bed board to rotate upward.

[0013] Furthermore, the rear bed board drive mechanism includes a second support, a second screw, a second guide rod, a second motor, a second movable seat, and a second bracket; there are two second supports, spaced apart in the front-rear direction, and the second supports are connected to the bed base; there are two second guide rods, spaced apart in the front-rear direction, with both ends of the second guide rods mounted on the second supports; the second screw is located between the two second guide rods, with both ends of the second screw mounted on the second support; the second motor is connected to the second screw; the second movable seat is fitted onto the second guide rod and the second screw and threadedly connected to the second screw; the lower end of the second bracket is hinged to the second movable seat, and the upper end of the second bracket is hinged to the rear bed board.

[0014] The beneficial effects of this invention are: 1. As Figure 14 As shown, after the bed board synchronization mechanism is connected to the previous bed board, the previous bed board and the second bed board rotate synchronously. When the patient needs to be semi-reclined or sit up, the front bed board drive mechanism drives the second bed board to rotate, and both the second bed board and the first bed board are raised.

[0015] When the patient is in prone ventilation, if the bed board synchronization mechanism is not connected to the previous bed board, then the previous bed board will not rotate synchronously with the previous two bed boards. For example... Figure 17As shown, the front bed board drive mechanism lifts the two front bed boards. The rear end of the first front bed board rises along with the second front bed board, while the front end rests on the upper bed beam and moves backward. When the second front bed board is raised to a certain angle, the first front bed board is suspended by the second front bed board and hangs down naturally. At this point, the front bed board drive mechanism stops. Then, the bed board actuation mechanism starts, actuating the first front bed board to swing backward. Then, the front bed board drive mechanism drives the second front bed board to swing downward. At this point, since the first front bed board has tilted backward, its lower end rests on the upper bed beam and moves backward. During this process, the bed board actuation mechanism adjusts to a lower position as needed. Finally, when the front bed board drive mechanism drives the second front bed board to swing to a horizontal position, the first front bed board has rotated 180° and is located below the second front bed board and inserted into the first bed board slot. Afterward, as... Figure 15 As shown, the headrest drive mechanism drives the headrest to move upward to support the patient's head.

[0016] After adjusting the electric hospital bed as described above, the patient lies prone on the bed with their head resting on the headrest. A gap can be created between the headrest and the two upper bed boards, or a mouth, nose, and neck groove can be placed on the headrest to allow the endotracheal tube and ventilator tubing to pass through. There should be a gap between the headrest and the two upper bed beams, i.e. Figure 16 As shown at point a, the distance can be relatively large, thus providing sufficient nursing space from which nursing staff can perform nursing care of the breathing tube and suctioning procedures.

[0017] It is evident that, in addition to the functions of a conventional electric hospital bed, this invention also enables prone ventilation and electric adjustment of all components, making it convenient and labor-saving. Attached Figure Description

[0018] Figure 1 This is an exterior view of an electric hospital bed; Figure 2 This is a front view of an electric hospital bed; Figure 3 This is a top view of the electric hospital bed with the bed board removed; Figure 4 This is the front view of the front bed drive mechanism; Figure 5 This is a top view of the front bed drive mechanism; Figure 6 This is the front view of the rear bed drive mechanism; Figure 7 This is a top view of the rear bed drive mechanism; Figure 8 This is the front view of the bed board actuation mechanism; Figure 9 This is a top view of the bed board actuation mechanism; Figure 10 This is a structural diagram of the bed board synchronization mechanism; Figure 11 This is a front view of the headrest and headrest drive mechanism; Figure 12This is a left view of the headrest and headrest drive mechanism; Figure 13 This is a top view of the headrest and headrest drive mechanism; Figure 14 This is a diagram showing the typical deformation state of an electric hospital bed; Figure 15 This is a diagram showing the prone ventilation state of an electric hospital bed. Figure 16 This is a top view of an electric hospital bed in a prone ventilation position. Figure 17 This is a diagram showing the deformation process of an electric hospital bed; The diagram is labeled as follows: Bed board 1, front bed board 11, front second bed board 12, rear bed board 13, rear second bed board 14, synchronization mechanism slot 121, upper bed beam 2, front bed board slot 21, actuation mechanism frame 22, bed base 3, front bed board drive mechanism 4, first support 41, first screw 42, first motor 43, first bracket 44, first moving seat 45, first guide rod 46, rear bed board drive mechanism 5, second support 51, second screw 52. 53. Second motor, 54. Second support, 55. Second moving seat, 56. Second guide rod, 6. Bed board actuation mechanism, 61. Rotating shaft, 62. Actuation plate, 63. Third motor, 7. Headrest, 71. Flexible pad, 72. Headrest base plate, 73. Mouth, nose and neck groove, 8. Headrest drive mechanism, 81. Second electric telescopic rod, 82. Guide sleeve, 83. Third guide rod, 9. Bed board synchronization mechanism, 91. First electric telescopic rod, 92. Insert rod, 93. Insert rod sleeve, 94. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] like Figures 1 to 3 As shown, the electric hospital bed includes an upper bed beam 2, a bed base 3, a bed board 1, a front bed board drive mechanism 4, a bed board synchronization mechanism 9, a bed board actuation mechanism 6, a headrest 7, and a headrest drive mechanism 8; there are two upper bed beams 2, which are spaced apart, and each upper bed beam 2 has a front bed board groove 21; the bed board 1 includes a front bed board 11 and a front second bed board 12, which are arranged sequentially from front to back and rest on the upper bed on both sides. On beam 2, the rear ends of the second front bed board 12 are hinged to the upper bed beam 2. The lower side of the second front bed board 12 has a synchronization mechanism groove 121. The first front bed board 11 is hinged to the second front bed board 12. The first front bed board 11 is shorter than the second front bed board 12. The first front bed board 11 can rotate 180° and be placed in the first front bed board groove 21. The bed base plate 3 is located below the upper bed beam 2. The front bed board drive mechanism 4 is set on the bed base plate 3 and can drive the second front bed board 12 to rotate upward. The bed board actuation mechanism 6 is connected to the upper bed beam 2. When the two front bed boards 12 rotate upward and the front bed board 11 hangs down naturally, the bed board actuation mechanism 6 can actuate the front bed board 11 to make it swing forward or backward. The bed board synchronization mechanism 9 is located in the synchronization mechanism slot 121 and is connected to the front two bed boards 12. The bed board synchronization mechanism 9 can be connected to the front bed board 11 so that the front bed board 11 and the front two bed boards 12 rotate synchronously. The headrest 7 is located below the front bed board 11. The headrest drive mechanism 8 is connected to the bed base board 3 and can drive the headrest 7 to move up and down. There is a distance between the headrest 7 and the two upper bed beams 2 in the left and right directions.

[0021] like Figure 14 As shown, after the bed board synchronization mechanism 9 is connected to the front bed board 11, the front bed board 11 and the front second bed board 12 rotate synchronously. When the patient needs to be semi-reclined or sit up, the front bed board drive mechanism 4 drives the front second bed board 11 to rotate, and both the front second bed board 12 and the front bed board 11 are raised.

[0022] When the patient is in prone ventilation, if the bed board synchronization mechanism 9 is not connected to the preceding bed board 11, then the preceding bed board 11 will not rotate synchronously with the preceding second bed board 12. For example... Figure 17 As shown, the front bed board drive mechanism 4 drives the second front bed board 12 to lift. The rear end of the first front bed board 11 rises with the second front bed board 12, while the front end of the first front bed board 11 rests on the upper bed beam 2 and moves backward. When the second front bed board 12 is raised to a certain angle, the first front bed board 11 hangs down naturally due to its longer length, and the front bed board drive mechanism 4 stops at this point. Then, the bed board actuation mechanism 6 starts, actuating the first front bed board 11 to swing backward. Then, the front bed board drive mechanism 4 drives the second front bed board 12 to swing downward. At this point, since the first front bed board 11 has tilted backward, its lower end rests on the upper bed beam 2 and moves backward. During this process, the bed board actuation mechanism 6 adjusts to a lower position as needed. Finally, when the front bed board drive mechanism 4 drives the second front bed board 12 to swing to a horizontal position, the first front bed board 11 has rotated 180° and is located below the second front bed board 12 and inserted into the first front bed board groove 21. After that, as Figure 15 As shown, the head cushion drive mechanism 8 drives the head cushion 7 to move upward to support the patient's head.

[0023] After the electric hospital bed is adjusted as described above, the patient lies prone on the bed with their head resting on the headrest 7. There should be a distance between the headrest 7 and the two front bed boards 12, or a mouth, nose, and neck groove 73 can be installed on the headrest 7 to allow the endotracheal tube and ventilator tubing to pass through. There should also be a distance between the headrest 7 and the two upper bed beams 2 in the left-right direction. Figure 16 As shown at point a, the distance can be relatively large, thus providing sufficient nursing space from which nursing staff can perform nursing care of the breathing tube and suctioning procedures.

[0024] When the patient does not require prone ventilation, the invention needs to be adjusted to its normal state, with the bed board synchronization mechanism 9 connected to the previous bed board 11. The adjustment process is as follows: the second bed board 12 is raised until it suspends the first bed board 11; when the first bed board 11 hangs down naturally, the bed board actuation mechanism 6 actuates the first bed board 11 to tilt it forward; then the second bed board 12 is lowered, and the front end of the first bed board 11 rests on the upper bed beam 2 and moves forward. Finally, both the second bed board 12 and the first bed board 11 are laid flat. Then the bed board synchronization mechanism 9 connects to the first bed board.

[0025] like Figure 10 As shown, the front bed board 11 is shorter than the second front bed board 12 so that the second front bed board 12 can suspend the front bed board 11 so that the front bed board 11 hangs down naturally; the front bed board 11 should also be narrower than the second front bed board 12 so that the front bed board 11 can easily enter the front bed board groove 21. In order to facilitate the front end of the front bed board 11 to slide on the upper bed beam 2, rollers can be installed on the front end of the front bed board 11.

[0026] Electric hospital beds are equipped with electronic control devices, allowing users to control the operation of various components via control panel buttons. This invention should also include an electronic control device, as shown in the diagram of an existing electric hospital bed. Ideally, the adjustment of the prone ventilation state should be achieved with a single button press. The controller should operate each component in the manner described above in a single cycle.

[0027] The front bed drive mechanism 4 can have various specific structures, and the present invention preferably has the following structure: Figure 4 and Figure 5 As shown: The front bed board drive mechanism 4 includes a first support 41, a first screw 42, a first guide rod 46, a first motor 43, a first movable seat 45, and a first bracket 44; there are two first supports 41, which are spaced apart in the front-rear direction and are connected to the bed base 3; there are two first guide rods 46, which are spaced apart in the front-rear direction and are mounted on the first support 41 at both ends; the first screw 42 is located between the two first guide rods 46, and its two ends are mounted on the first support 41; the first motor 43 is connected to the first screw 42; the first movable seat 45 is fitted onto the first guide rod 46 and the first screw 42 and is threadedly connected to the first screw 42; the lower end of the first bracket 44 is hinged to the first movable seat 45, and the upper end of the first bracket 44 is hinged to the front second bed board 12.

[0028] The first movable seat 45 is mounted on the first guide rod 46 and the first screw 42, forming a lead screw and nut mechanism. Rotation of the first screw 42 moves the first movable seat 45, causing the first support 44 to move and rotate, thus supporting the front two bed boards 12.

[0029] The specific structure of the bed board actuation mechanism 6 can be as follows: Figure 8 and Figure 9 As shown, the bed board actuation mechanism 6 includes a rotating shaft 61, an actuation plate 62, and a third motor 63. The rotating shaft 61 is mounted on the upper bed beam 2, the actuation plate 62 is connected to the rotating shaft 61, the third motor 63 is mounted on the upper bed beam 2 and can drive the rotating shaft 61, and the actuation plate 62 can actuate the previous bed board 11.

[0030] contrast Figure 15 and 17 When the bed board actuation mechanism 6 is not in operation, the actuation plate 62 is horizontal to avoid interference with the second bed board 12. When in operation, it rotates. When the actuation plate 62 is facing forward, rotating 180° can move the previous bed board 11 backward; when the actuation plate 62 is facing backward, rotating 180° can move the previous bed board 11 forward. The actuation mechanism frame 22 can be installed on the upper bed beam 2 to mount the bed board actuation mechanism 6.

[0031] The specific structure of the bed board synchronization mechanism 9 can be described as follows: Figure 10 As shown, the bed board synchronization mechanism 9 includes a first electric telescopic rod 91, a connecting rod 94, two insert sleeves 93, and two insert rods 92. The first electric telescopic rod 91 is arranged in the front-to-back direction. The two insert sleeves 93 are located on the left and right sides of the first electric telescopic rod 91. The insert rods 92 are inserted into the insert sleeves 93 and cooperate with the insert sleeves 93. The connecting rod 94 connects the two insert rods 92 and is connected to the first electric telescopic rod 91. The front bed board 11 has two insertion holes 111. When the first electric telescopic rod 91 extends, the insert rods 92 are inserted into the insertion holes 111.

[0032] When inserting the insertion rod 92 into the insertion hole 111, the insertion rod sleeve 93 should also be partially inserted. This ensures that the insertion rod 92 synchronizes the first bed board 11 and the second bed board 12. If the insertion rod 92 is moved backward and withdrawn from the insertion hole 111, the first bed board 11 and the second bed board 12 will not be synchronized. The synchronization mechanism slot 121 is used to accommodate the bed board synchronization mechanism 9 to prevent the synchronization mechanism 9 from affecting the 180° rotation of the first bed board 11.

[0033] The specific structures of the head pad 7 and the head pad drive mechanism 8 can be described as follows: Figures 11 to 13 As shown, the headrest 7 has a mouth, nose, and neck groove 73. The headrest 7 includes a headrest base plate 72 and a flexible pad 71 connected to the headrest base plate 72. The headrest drive mechanism 8 includes a second electric telescopic rod 81, two guide sleeves 82, and two third guide rods 83. The second electric telescopic rod 81 is vertically arranged, and its upper and lower ends are respectively connected to the bed base plate 3 and the headrest 7. The two guide sleeves 82 are vertically arranged on the left and right sides of the second electric telescopic rod 81 and are connected to the bed base plate 3. The third guide rods 83 are inserted into the guide sleeves 82 and cooperate with the guide sleeves 82. The third guide rods 83 are connected to the headrest 7.

[0034] The mouth-nose-neck groove 73 is used to avoid pressing on the patient's mouth and nose, and to facilitate the passage of the endotracheal tube. The flexible pad 71 is used to improve tactile sensation. The second electric telescopic rod 81 can be extended or retracted to adjust the height of the headrest 7. The guide sleeve 82 and the three guide rods 83 are used to guide the up and down movement of the headrest 7.

[0035] In addition to the front bed board 11 and the front second bed board 12, the electric hospital bed should also conventionally include a rear bed board. Specifically, the electric hospital bed includes a rear bed board drive mechanism 5 located behind the front bed board drive mechanism 4; the bed board 1 includes a rear bed board 13 and a rear second bed board 14, the rear bed board 13 is located behind the front second bed board 12 and is hinged to the upper bed beam 2, the rear second bed board 14 is located behind the rear bed board 13 and is hinged to the rear bed board 13, and both sides of the rear bed board 13 and the rear second bed board 14 rest on the upper bed beam 2; the rear bed board drive mechanism 5 is set on the bed base plate 3 and can drive the rear bed board 13 to rotate upward.

[0036] like Figure 14 As shown, the rear bed board drive mechanism 5 drives the rear bed board 13 to rotate upward, and the rear bed board 13 drives the rear second bed board 14 to move. The rear bed board 13 and the rear second bed board 14 arch up, which can raise the patient's legs and bend the knees.

[0037] The specific structure of the rear bed drive mechanism 5 can be as follows: Figure 6 and Figure 7 As shown, the rear bed board drive mechanism 5 includes a second support 51, a second screw 52, ​​a second guide rod 56, a second motor 53, a second movable seat 55, and a second bracket 54. There are two second supports 51, spaced apart in the front-rear direction, and each second support 51 is connected to the bed base 3. There are also two second guide rods 56, spaced apart in the front-rear direction, with both ends of each guide rod mounted on the second support 51. The second screw 52 is located between the two second guide rods 56, with both ends mounted on the second support 51. The second motor 53 is connected to the second screw 52. The second movable seat 55 is fitted onto the second guide rod 56 and the second screw 52 and threadedly connected to the second screw 52. The lower end of the second bracket 54 is hinged to the second movable seat 55, and the upper end of the second bracket 54 is hinged to the rear bed board 13.

[0038] The structure and principle of the rear bed plate drive mechanism 5 are the same as those of the front bed plate drive mechanism 4, and will not be described again here.

Claims

1. An electric hospital bed, characterized in that: The bed includes an upper bed beam (2), a bed base plate (3), a bed board (1), a front bed board drive mechanism (4), a bed board synchronization mechanism (9), a bed board actuation mechanism (6), a headrest (7), and a headrest drive mechanism (8); there are two upper bed beams (2), which are spaced apart, and each upper bed beam (2) has a front bed board groove (21); the bed board (1) includes a front bed board (11) and a front second bed board (12), which are arranged sequentially from front to back and rest on the upper bed beams on both sides. 2) The rear end of the front two bed boards (12) is hinged to the upper bed beam (2). The lower side of the front two bed boards (12) has a synchronous mechanism groove (121). The front bed board (11) is hinged to the front two bed boards (12). The front bed board (11) is shorter than the front two bed boards (12). The front bed board (11) can rotate 180° and be placed in the front bed board groove (21). The bed base board (3) is located below the upper bed beam (2). The front bed board drive mechanism (4) is set on the bed base board (3) and can drive the front two bed boards (12) to rotate upward. The bed board actuation mechanism (6) is connected to the upper bed beam (2). When the two front bed boards (12) rotate upward and the front bed board (11) hangs down naturally, the bed board actuation mechanism (6) can actuate the front bed board (11) to make it swing forward or backward. The bed board synchronization mechanism (9) is located in the synchronization mechanism slot (121) and connected to the front two bed boards (12). The bed board synchronization mechanism (9) can be connected to the front bed board (11) so that the front bed board (11) and the front two bed boards (12) rotate synchronously. The headrest (7) is located below the front bed board (11). The headrest drive mechanism (8) is connected to the bed base board (3) and can drive the headrest (7) to move up and down. There is a distance between the headrest (7) and the two upper bed beams (2) in the left and right directions.

2. The electric hospital bed according to claim 1, characterized in that: The front bed drive mechanism (4) includes a first support (41), a first screw (42), a first guide rod (46), a first motor (43), a first movable seat (45), and a first bracket (44); there are two first supports (41), which are spaced apart in the front-rear direction, and the first supports (41) are connected to the bed base (3); there are two first guide rods (46), which are spaced apart in the front-rear direction, and the first guide rods (46) are spaced apart. The two ends of the first screw (42) are mounted on the first support (41); the first screw (42) is located between the two first guide rods (46), and the two ends of the first screw (42) are mounted on the first support (41); the first motor (43) is connected to the first screw (42); the first movable seat (45) is fitted on the first guide rod (46) and the first screw (42) and threadedly connected to the first screw (42); the lower end of the first bracket (44) is hinged to the first movable seat (45), and the upper end of the first bracket (44) is hinged to the front second bed plate (12).

3. The electric hospital bed according to claim 1, characterized in that: The bed board actuation mechanism (6) includes a rotating shaft (61), an actuation plate (62), and a third motor (63). The rotating shaft (61) is mounted on the upper bed beam (2), the actuation plate (62) is connected to the rotating shaft (61), the third motor (63) is mounted on the upper bed beam (2) and can drive the rotating shaft (61), and the actuation plate (62) can actuate the previous bed board (11).

4. The electric hospital bed according to claim 1, characterized in that: The bed board synchronization mechanism (9) includes a first electric telescopic rod (91), a connecting rod (94), two insert sleeves (93) and two insert rods (92). The first electric telescopic rod (91) is arranged in the front-to-back direction. The two insert sleeves (93) are located on the left and right sides of the first electric telescopic rod (91). The insert rods (92) are inserted into the insert sleeves (93) and cooperate with the insert sleeves (93). The connecting rod (94) connects the two insert rods (92) and is connected to the first electric telescopic rod (91). The front bed board (11) has two insertion holes (111). When the first electric telescopic rod (91) extends, the insert rods (92) are inserted into the insertion holes (111).

5. The electric hospital bed according to claim 1, characterized in that: The head pad (7) has a mouth, nose and neck groove (73) and includes a head pad base plate (72) and a flexible pad (71) connected to the head pad base plate (72).

6. The electric hospital bed according to claim 1, characterized in that: The headrest drive mechanism (8) includes a second electric telescopic rod (81), two guide sleeves (82) and two third guide rods (83). The second electric telescopic rod (81) is vertically arranged, and the upper and lower ends of the second electric telescopic rod (81) are connected to the bed base (3) and the headrest (7) respectively. The two guide sleeves (82) are vertically arranged on the left and right sides of the second electric telescopic rod (81) and connected to the bed base (3). The third guide rods (83) are inserted into the guide sleeves (82) and cooperate with the guide sleeves (82). The third guide rods (83) are connected to the headrest (7).

7. The electric hospital bed according to any one of claims 1 to 6, characterized in that: The bed includes a rear bed drive mechanism (5) located behind the front bed drive mechanism (4); the bed board (1) includes a rear first bed board (13) and a rear second bed board (14), the rear first bed board (13) is located behind the front second bed board (12), the rear first bed board (13) is hinged to the upper bed beam (2), the rear second bed board (14) is located behind the rear first bed board (13), the rear second bed board (14) is hinged to the rear first bed board (13), and both sides of the rear first bed board (13) and the rear second bed board (14) rest on the upper bed beam (2); the rear bed drive mechanism (5) is set on the bed base plate (3) and can drive the rear first bed board (13) to rotate upward.

8. The electric hospital bed according to claim 7, characterized in that: The rear bed board drive mechanism (5) includes a second support (51), a second screw (52), a second guide rod (56), a second motor (53), a second movable seat (55), and a second bracket (54); there are two second supports (51), which are spaced apart in the front-rear direction and are connected to the bed base (3); there are two second guide rods (56), which are spaced apart in the front-rear direction and are connected to the bed base (3). The two ends of the second screw (52) are mounted on the second support (51); the second screw (52) is located between the two second guide rods (56), and the two ends of the second screw (52) are mounted on the second support (51); the second motor (53) is connected to the second screw (52); the second movable seat (55) is fitted on the second guide rod (56) and the second screw (52) and threadedly connected to the second screw (52); the lower end of the second bracket (54) is hinged to the second movable seat (55), and the upper end of the second bracket (54) is hinged to the rear bed board (13).

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