Hospital bed with lateral turning mechanism

Abstract

The present application relates to the technical field of hospital beds and discloses a hospital bed with a lateral turning mechanism, comprising a bed frame and a bed board mounted on the bed frame, the bed board comprising a fixed board mounted on the bed frame and a turning board hinged to both sides of the fixed board, a driving member mounted on the bed frame for driving the turning board to rotate, the driving member comprising a telescopic cylinder mounted between the bed frame and the turning board, the telescopic cylinder comprising a cylinder body and a piston rod, the cylinder body being hinged to the bed frame, the end of the piston rod being hinged to the turning board, a support member being disposed between the bed frame and the turning board, the support member comprising a cylinder body hinged to the bed frame and a sliding rod sliding in the cylinder body. The present application can improve the safety of the turning board after rotation.

Description

Technical Field

[0001] The present application relates to the technical field of hospital beds, and in particular to a hospital bed with a lateral turning mechanism. Background Art

[0002] Currently, hospital beds with lateral turning mechanisms use mechanical structure design to help patients achieve autonomous or assisted turning over, reducing the burden on medical staff and improving patient comfort.

[0003] The bed board of the hospital bed is composed of multiple mutually hinged plates, and a hydraulic cylinder or oil pressure cylinder is used as a power source to drive the bed board to rotate, thereby making it easier for patients lying on the bed to turn over.

[0004] The bed's tilting mechanism relies on hydraulic or oil pressure. This power source can be affected by factors such as aging or damage to seals, corrosion or foreign matter in the cylinder, or insufficient system pressure, all of which can negatively impact support effectiveness. If the power source fails during a patient's tilt, it can easily harm the patient. Summary of the Invention

[0005] The present application provides a hospital bed with a lateral turning mechanism.

[0006] This application adopts the following technical solutions:

[0007] A hospital bed with a lateral turning mechanism comprises a bed body and a bed board mounted on the bed body, the bed board comprising a fixed board mounted on the bed body and a turning board hinged to both sides of the fixed board, a driving member mounted on the bed body for driving the turning board to rotate; the driving member comprises a telescopic cylinder mounted between the bed body and the turning board, the telescopic cylinder comprising a cylinder body and a piston rod, the cylinder body being hinged to the bed body, and the end of the piston rod being hinged to the turning board;

[0008] A support member is provided between the bed and the flip plate; the support member includes a cylinder hinged to the bed and a sliding rod sliding in the cylinder, the rotation axes of the cylinder and the cylinder are coaxially arranged, a transverse plate is provided at the upper end of the sliding rod, the piston rod slides through the transverse plate, a connecting rod hinged to the flip plate is provided on the transverse plate, and the connecting rod and the sliding rod are coaxially arranged;

[0009] A non-return structure is provided between the sliding rod and the inner wall of the cylinder, and a trigger member is provided between the cross plate and the piston rod. When the piston rod slides out of the cylinder, the sliding rod can be driven to slide in the cylinder through the cross plate, and the non-return structure can limit the sliding rod from sliding into the cylinder. When the piston rod slides into the cylinder, the trigger member can release the limit of the sliding rod by the non-return structure, so that the sliding rod can slide into the cylinder.

[0010] By adopting the above technical solution, the flip plate is driven to rotate by the driving member, so that the rotation of the flip plate is more conducive to the patient's turning over. When the driving member is working, the sliding rod slides out of the cylinder, and under the action of the anti-return structure, the sliding rod cannot slide into the cylinder, so that the sliding rod can support the flip plate. If the driving member fails, the sliding rod can still support the flip plate.

[0011] Optionally, the anti-return structure includes a anti-return block slidably arranged on the side wall of the sliding rod and a resistance block arranged on the inner wall of the cylinder, and a plurality of resistance blocks are evenly arranged along the axial direction of the cylinder, and the resistance block has a horizontally arranged resistance surface and an inclined surface inclined from bottom to top toward the inner cavity of the cylinder; the side wall of the sliding rod is provided with a sliding groove for the anti-return block to slide, and a first elastic member is provided in the sliding groove, and when the sliding rod slides out of the cylinder, the first elastic member can drive the anti-return block to abut against the resistance block.

[0012] By adopting the above technical solution, when the sliding rod slides out of the cylinder, the inclined surface pushes the check block to slide into the sliding groove. After the inclined surface and the check block are separated, the first elastic member can drive the check block to pop out and abut against the contact surface, making it difficult for the sliding rod to slide into the cylinder again, thereby achieving the effect of preventing the sliding rod from returning.

[0013] Optionally, a receiving groove is provided on the inner wall of the cylinder, the interference block is located in the receiving groove, the size of the receiving groove is larger than the interference block, and the sliding rod is rotatably arranged on the horizontal plate. When the piston rod slides into the cylinder body, the trigger member can drive the sliding rod to rotate so that the check block and the interference block are out of contact.

[0014] By adopting the above technical solution, when the sliding rod needs to slide into the cylinder, the trigger member drives the sliding rod to rotate, so that the check block and the resistance block are staggered, thereby allowing the sliding rod to slide into the cylinder.

[0015] Optionally, an installation cavity is provided in the cross plate, a rack is slidably provided in the installation cavity, one end of the sliding rod extends in the installation cavity, and a gear is provided on the side wall portion of the sliding rod in the installation cavity, and the gear and the rack are meshed; a reset member is provided in the installation cavity, and the trigger member is used to drive the rack to slide, and when the piston rod slides into the cylinder body, the trigger member drives the rack to slide and drives the sliding rod to rotate, so that the interference block and the check block are separated, and the reset member is compressed; when the piston rod slides out of the cylinder body, the reset member drives the rack to slide and reset, and the check block moves to a position where it can abut against the interference block.

[0016] By adopting the above technical solution, the rack and the gear are meshed, so that when the rack slides, it can drive the sliding rod to rotate, thereby achieving the staggered position of the check block and the interference block.

[0017] Optionally, an annular groove is provided on the inner wall of the cylinder near the bottom.

[0018] By adopting the above technical solution, when the sliding rod slides into the cylinder, the check block can move into the annular groove. When the sliding rod slides out next time, the sliding rod rotates, and the check block rotates from the position corresponding to the annular groove to the position corresponding to the interference block.

[0019] Optionally, the trigger member is a sliding cylinder slidably mounted on the outer wall of the piston rod, the outer wall of the piston rod is provided with two annular protrusions, the sliding cylinder is located between the two annular protrusions, the sliding cylinder is slidably set on the cross plate, and a second elastic member is provided between the upper end of the sliding cylinder and the cross plate, when the sliding cylinder slides downward relative to the cross plate, the second elastic member is compressed; when the piston rod slides into the cylinder body, the upper annular protrusion abuts against the upper end of the sliding cylinder and pushes the sliding cylinder to slide downward, and drives the rack to slide through the sliding cylinder.

[0020] By adopting the above technical solution, when the piston rod slides out, the annular convex abuts against the sliding cylinder and drives the sliding cylinder to slide, and the reset member drives the rack to slide and reset, so that the sliding rod rotates, and the check block can correspond to the interference block. When the piston rod slides into the cylinder body, the annular convex abuts against the upper end of the sliding cylinder and pushes the sliding cylinder to slide, thereby pushing the rack to slide, and then driving the sliding rod to rotate, so that the check block and the interference block are separated.

[0021] Optionally, a trigger surface is provided on the side wall of the sliding cylinder, and the trigger surface is inclined from top to bottom. One end of the rack abuts against the trigger surface. When the sliding cylinder moves downward, the rack is pushed to slide by the trigger surface.

[0022] By adopting the above technical solution, the reset member drives the rack to abut against the trigger surface, and the sliding cylinder slides to push the rack to move.

[0023] Optionally, one end of the rack abutting against the trigger surface is provided with a chamfer.

[0024] By adopting the above technical solution, it is easy to promote the sliding of the rack.

[0025] Optionally, the first elastic member and the second elastic member are both springs.

[0026] In summary, this application has at least one of the following beneficial effects:

[0027] 1. When the driving member drives the flip plate to rotate, it can drive the sliding rod to slide from the cylinder, and with the cooperation of the check block and the resistance block, the sliding rod is not easy to slide into the cylinder again, thereby supporting the flip plate;

[0028] 2. The trigger member drives the sliding rod to rotate through the rack, thereby releasing the effect of the anti-return structure and allowing the sliding rod to slide into the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural diagram of an embodiment of the present application;

[0030] Figure 2 is a schematic diagram of a bed board in an embodiment of the present application;

[0031] Figure 3 yes Figure 2 A magnified schematic diagram of point A in the middle;

[0032] Figure 4 is a schematic diagram of a driving member and a supporting member in an embodiment of the present application;

[0033] Figure 5 This is an exploded schematic diagram of the cylinder in the embodiment of the present application;

[0034] Figure 6 is a schematic cross-sectional view of the cylinder in the embodiment of the present application;

[0035] Figure 7 is a schematic cross-sectional view of a horizontal plate in an embodiment of the present application;

[0036] Figure 8 It is a schematic diagram of the sliding cylinder and the rack.

[0037] Explanation of the accompanying drawings: 1. Bed body; 2. Bed board; 201. Fixed plate; 202. Flip plate; 3. Driving member; 301. Cylinder body; 302. Piston rod; 4. Support member; 401. Cylinder body; 402. Sliding rod; 5. Cross plate; 6. Connecting rod; 71. Check block; 72. Interference block; 8. Trigger member; 81. Sliding cylinder; 9. Interference surface; 10. Inclined surface; 11. Sliding groove; 12. First elastic member; 13. Accommodating groove; 14. Mounting cavity; 15. Rack; 16. Gear; 17. Resetting member; 18. Ring groove; 19. Ring bulge; 20. Second elastic member; 21. Trigger surface; 22. Landing groove. DETAILED DESCRIPTION

[0038] The present application is further described in detail below with reference to the accompanying drawings.

[0039] The embodiment of the present application discloses a hospital bed with a lateral turning mechanism. Figure 1 and Figure 2 The hospital bed includes a bed frame 1 and a bed board 2 mounted on the bed frame 1. The bed board 2 includes a fixed plate 201 fixed to the bed frame 1 and a flip plate 202 hinged on either side of the fixed plate 201. When the flip plate 202 is rotated to a horizontal position, it can abut the upper surface of the bed frame 1. The flip plate 202 and the fixed plate 201 are both composed of multiple connected plates. The rotation axis of the flip plate 202 is parallel to the length of the bed frame 1. A driving member 3 is mounted on the bed frame 1 to drive the flip plate 202 to rotate. One or two driving members 3 can be installed between the bed frame 1 and the flip plate 202. This embodiment uses one driving member 3 as an example. The driving member 3 is a device such as a hydraulic cylinder or a pneumatic cylinder. The driving member 3 includes a cylinder 301 and a piston rod 302 that cooperates with the cylinder 301. One end of the cylinder 301 is hinged to the bed frame 1, and one end of the piston rod 302 is hinged to the lower surface of the flip plate 202. Therefore, movement of the piston rod 302 drives the flip plate 202 to rotate. The hinged connection can be achieved by setting a hinge seat and realizing the hinge by means of a pin.

[0040] Reference Figure 2 and Figure 3 A support member 4 is installed between the bed body 1 and the flip plate 202. When the driving member 3 is working, the support member 4 can provide auxiliary support to the flip plate 202. When the flip plate 202 is in a flipping state, if the driving member 3 is accidentally damaged, the support member 4 can support the flip plate 202, thereby reducing the situation where the flip plate 202 is flipped due to sudden damage of the driving member 3.

[0041] Reference Figure 2 and Figure 4The support member 4 includes a cylinder 401 hinged on the bed body 1, and a sliding rod 402 sliding in the cylinder 401. The rotation points of the cylinder 401 and the cylinder body 301 are on the same axis. One end of the sliding rod 402 extends beyond the cylinder 401 and is connected to a horizontal plate 5. The piston rod 302 slides through the horizontal plate 5. A connecting rod 6 is fixed to the horizontal plate 5. The connecting rod 6 and the sliding rod 402 are coaxially arranged, and one end of the connecting rod 6 is hinged to the lower surface of the flip plate 202. The rotation axis of the connecting rod 6 is the same as the rotation axis of the piston rod 302. The sliding rod 402 and the piston rod 302 are in a parallel state. When the piston rod 302 moves, the sliding rod 402 can slide synchronously in the cylinder 401.

[0042] Reference Figure 4 and Figure 5 A non-return structure is installed between the sliding rod 402 and the inner wall of the cylinder 401. When the sliding rod 402 slides out of the cylinder 401, the non-return structure can prevent the sliding rod 402 from sliding into the cylinder 401, thereby allowing the support member 4 to support the flip plate 202. A trigger member 8 is installed between the horizontal plate 5 and the piston rod 302. When the piston rod 302 slides into the cylinder 301, the trigger member 8 can trigger the non-return effect, thereby allowing the sliding rod 402 to slide into the cylinder 401.

[0043] Reference Figure 5 and Figure 6 The anti-return structure includes a anti-return block 71 sliding on the side wall of the sliding rod 402 and a resistance block 72 installed on the inner wall of the cylinder 401. A plurality of resistance blocks 72 are evenly arranged along the axial direction of the cylinder 401. The resistance block 72 has a resistance surface 9 and an inclined surface 10. The inclined surface 10 is inclined from bottom to top toward the axial direction of the cylinder 401, and the resistance surface 9 is arranged horizontally. A sliding groove 11 is provided on the side wall of the sliding rod 402. A first elastic member 12 is installed in the sliding groove 11. The anti-return block 71 slides in the sliding groove 11. The first elastic member 12 is a spring, one end of which is connected to the anti-return block 71, and the other end is connected to the inner end surface of the sliding groove 11. When the sliding rod 402 slides out of the cylinder 401, the inclined surface 10 pushes the check block 71 to slide into the sliding groove 11. When the inclined surface 10 and the check block 71 are separated, the check block 71 pops out, and the contact surface 9 can abut against the lower surface of the check block 71, so that the sliding rod 402 can no longer slide into the cylinder 401.

[0044] The inner wall of the cylinder 401 is provided with a receiving groove 13, in which the interference block 72 is located. The receiving groove 13 is larger than the interference block 72. The sliding rod 402 is rotatably mounted on the cross plate 5. When the piston rod 302 slides into the cylinder 301, the trigger member 8 drives the sliding rod 402 to rotate, causing the check block 71 to separate from the interference block 72 as the sliding rod 402 moves, thereby allowing the sliding rod 402 to slide into the cylinder 401.

[0045] Reference Figure 7 and Figure 8 , one end of the sliding rod 402 rotates on the horizontal plate 5 through bearings or other means. A mounting cavity 14 is provided on the horizontal plate 5, in which a rack 15 is slidably provided. The upper end portion of the sliding rod 402 is located in the mounting cavity 14, and a gear 16 is fixed to the side wall of the sliding rod 402. The gear 16 and the rack 15 are engaged, and when the rack 15 slides, the sliding rod 402 can be driven to rotate. The rack 15 slides linearly in the mounting cavity 14, and a reset member 17 is provided on the inner wall of the mounting cavity 14. The reset member 17 is a spring and is connected to the end of the rack 15. One end of the rack 15 is bent so that the rack 15 has an L-shaped structure. The bent end of the rack 15 is connected to the reset member 17, and a space for accommodating the spring is provided in the mounting cavity 14. The trigger member 8 is used to drive the rack 15 to slide to drive the sliding rod 402 to rotate. When the piston rod 302 slides into the cylinder 301, the trigger member 8 pushes the rack 15 to slide, causing the sliding rod 402 to rotate, thereby contacting the anti-return mechanism and compressing the reset member 17. When the piston rod 302 slides out of the cylinder 301, the reset member 17 drives the rack 15 to slide back, and the sliding rod 402 rotates to the position corresponding to the anti-return block 71 and the abutment block 72.

[0046] Reference Figure 4 and Figure 8 The trigger member 8 is a sliding cylinder 81 that is slidably mounted on the outer wall of the piston rod 302. The outer wall of the upper end of the sliding cylinder 81 has a stepped edge. Two annular protrusions 19 are fixed to the outer wall of the piston rod 302. The sliding cylinder 81 is located between the two annular protrusions 19. The distance between the two annular protrusions 19 is greater than the length of the sliding cylinder 81, so that the sliding cylinder 81 can slide between the two sliding cylinders 81. The sliding cylinder 81 slides through the cross plate 5, and a second elastic member 20 is connected between the upper surface of the cross plate 5 and the upper end of the sliding cylinder 81. The second elastic member 20 is a spring that is mounted on the outer wall of the sliding cylinder 81. The rack 15 has a bent end that cooperates with the sliding cylinder 81, so that the sliding of the sliding cylinder 81 pushes the rack 15 to slide.

[0047] The sidewall of the sliding cylinder 81 is provided with a seating groove 22, into which one end of the rack 15 abuts under the action of the reset member 17. The sidewall of the seating groove 22 is provided with a trigger surface 21, which is tilted from top to bottom, away from the rack 15. When the piston rod 302 is retracted into the cylinder body 301, the upper annular protrusion 19 abuts the upper end of the sliding cylinder 81 and pushes the sliding cylinder 81 downward. The second elastic member 20 is compressed, and the trigger surface 21 abuts the end of the rack 15, gradually pushing the rack 15 to slide away from the sliding cylinder 81, and the reset member 17 is compressed. When the piston rod 302 slides out of the cylinder body 301, the annular protrusion 19 abuts the lower end of the sliding cylinder 81 and pushes the sliding cylinder 81 upward. The reset member 17 drives the rack 15 to slide and reset, and simultaneously drives the sliding rod 402 to rotate. In order to facilitate the trigger surface 21 to push the rack 15 to slide, the end of the rack 15 is provided with a chamfer.

[0048] Further, refer to Figure 5 and Figure 6 An annular groove 18 is provided in the inner wall of the cylinder 401 near the bottom. When the sliding rod 402 slides into the cylinder 401, the check block 71 can move from the receiving groove 13 to the annular groove 18. When the sliding rod 402 rotates next time, the check block 71 can first rotate in the annular groove 18 to the position corresponding to the interference block 72. When the sliding rod 402 slides out of the cylinder 401, the interference block 72 can cooperate with the check block 71.

[0049] The implementation principle of a hospital bed with a lateral turning mechanism in an embodiment of the present application is as follows: the flip plate 202 is driven to rotate by the driving member 3. During this process, the sliding rod 402 slides out of the cylinder 401, and the non-return block 71 can cooperate with the resistance block 72 to limit the sliding rod 402 from sliding into the cylinder 401. When the driving member 3 loses its function, the support member 4 can effectively support the flip plate 202.

[0050] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A hospital bed with a lateral turning mechanism, characterized in that: The invention comprises a bed body and a bed board arranged on the bed body, wherein the bed board comprises a fixed plate arranged on the bed body and a flip plate hinged to both sides of the fixed plate, and a driving member for driving the flip plate to rotate is installed on the bed body; the driving member comprises a telescopic cylinder installed between the bed body and the flip plate, the telescopic cylinder having a cylinder body and a piston rod, the cylinder body being hinged to the bed body, and the end of the piston rod being hinged to the flip plate; A support member is provided between the bed and the flip plate; the support member includes a cylinder hinged to the bed and a sliding rod sliding in the cylinder, the rotation axes of the cylinder and the cylinder are coaxially arranged, a transverse plate is provided at the upper end of the sliding rod, the piston rod slides through the transverse plate, a connecting rod hinged to the flip plate is provided on the transverse plate, and the connecting rod and the sliding rod are coaxially arranged; A non-return structure is provided between the sliding rod and the inner wall of the cylinder, and a trigger member is provided between the transverse plate and the piston rod. When the piston rod slides out of the cylinder, the sliding rod can be driven to slide in the cylinder through the transverse plate, and the non-return structure can limit the sliding rod from sliding into the cylinder. When the piston rod slides into the cylinder, the trigger member can release the restriction of the sliding rod by the non-return structure, so that the sliding rod can slide into the cylinder. The anti-return structure includes a anti-return block slidably arranged on the side wall of the sliding rod and a resistance block arranged on the inner wall of the cylinder, wherein a plurality of resistance blocks are evenly arranged along the axis direction of the cylinder, and the resistance block has a horizontal resistance surface and an inclined surface inclined from bottom to top toward the inner cavity of the cylinder; the side wall of the sliding rod is provided with a sliding groove for the anti-return block to slide, and a first elastic member is provided in the sliding groove, and when the sliding rod slides out of the cylinder, the first elastic member can drive the anti-return block to abut against the resistance block; The inner wall of the cylinder is provided with a receiving groove, the interference block is located in the receiving groove, the size of the receiving groove is larger than the interference block, the sliding rod is rotatably arranged on the transverse plate, and when the piston rod slides into the cylinder body, the trigger member can drive the sliding rod to rotate, so that the non-return block and the interference block are out of contact; The cross plate is provided with an installation cavity, and a rack is slidably provided in the installation cavity. One end of the sliding rod extends into the installation cavity, and a gear is provided on the side wall portion of the sliding rod in the installation cavity, and the gear and the rack are meshed; a reset member is provided in the installation cavity, and the trigger member is used to drive the rack to slide. When the piston rod slides into the cylinder body, the trigger member drives the rack to slide and drives the sliding rod to rotate, so that the interference block and the non-return block are separated, and the reset member is compressed; when the piston rod slides out of the cylinder body, the reset member drives the rack to slide and reset, and the non-return block moves to a position where it can abut against the interference block.

2. A hospital bed with a lateral turning mechanism according to claim 1, characterized in that: An annular groove is provided on the inner wall of the cylinder near the bottom.

3. A hospital bed with a lateral turning mechanism according to claim 2, characterized in that: The trigger member is a sliding cylinder slidably mounted on the outer wall of the piston rod, the outer wall of the piston rod is provided with two annular protrusions, the sliding cylinder is located between the two annular protrusions, the sliding cylinder is slidably arranged on the cross plate, and a second elastic member is provided between the upper end of the sliding cylinder and the cross plate, when the sliding cylinder slides downward relative to the cross plate, the second elastic member is compressed; when the piston rod slides into the cylinder body, the upper annular protrusion abuts against the upper end of the sliding cylinder and pushes the sliding cylinder to slide downward, and drives the rack to slide through the sliding cylinder.

4. A hospital bed with a lateral turning mechanism according to claim 3, characterized in that: The side wall of the sliding cylinder is provided with a trigger surface, which is inclined from top to bottom. One end of the rack abuts against the trigger surface. When the sliding cylinder moves downward, the rack is pushed to slide by the trigger surface.

5. The hospital bed with a lateral turning mechanism according to claim 4, characterized in that: One end of the rack abutting against the trigger surface is provided with a chamfer.

6. The hospital bed with a lateral turning mechanism according to claim 5, characterized in that: The first elastic member and the second elastic member are both springs.

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