Hydraulic damping device for folding section of a care bed

Abstract

The utility model provides a nursing bed's folding part hydraulic buffer damping device relates to nursing bed technical field, including a plurality of hydraulic buffer rod, a plurality of hydraulic buffer rod swing joint is in the bed board, and the other end of hydraulic buffer rod swing joint is in the folding part of nursing bed, still be provided with a plurality of gas tank on the bed board, and the gas tank is provided with the air bag through, and the air bag is used for supporting the folding part of nursing bed. The utility model discloses through a plurality of hydraulic buffer rod and a plurality of air bag's combination design forms multiple buffer mechanism, and a plurality of hydraulic buffer rod can disperse load and provide basic damping force, and simultaneously, the air bag on the bed board forms the flexible support to the folding part, when the back plate resets and sinks, the air bag will produce reverse supporting force with pressure increase, and the hydraulic buffer rod cooperates, can effectively slow down the sinking speed of folding part, can also absorb the impact force when the sudden unexpected situation, reduces the impact risk, improves the security and stability of nursing bed folding part.

Description

Technical Field

[0001] This utility model relates to the field of nursing bed technology, specifically to a hydraulic buffer and shock absorption device for the folding part of a nursing bed. Background Technology

[0002] Nursing beds are medical care devices specifically designed for patients with limited mobility or who are bedridden for extended periods. They combine the basic functions of a hospital bed with humanized care features. They are typically equipped with an adjustable bed frame structure, allowing for electric or manual raising and lowering of the back and leg areas, facilitating daily activities such as getting up, turning over, and eating, while also reducing the workload for caregivers.

[0003] However, most existing nursing beds use a design where several hydraulic buffer rods are rotatably mounted on the backrest and then rotatably connected to the bed board at the other end. If only a few hydraulic buffer rods are used, the braking force of the hydraulic buffer rods is insufficient when the backrest is lowered from a semi-sitting position, causing the backrest to sink rapidly and failing to effectively cushion the movement. Furthermore, some existing nursing beds use an angle-stopping mechanism in conjunction with hydraulic buffer rods to address these issues. However, since angle-stopping mechanisms rely heavily on mechanical braking for locking, if the braking components malfunction (e.g., jamming or disengagement), the load originally borne by the stop mechanism is instantly transferred to the hydraulic buffer rods, causing a sudden increase in load on the hydraulic buffer rods and potentially generating significant impact force, which could easily cause accidental injury to patients and caregivers. Utility Model Content

[0004] This utility model provides a hydraulic buffer and shock absorption device for the folding part of a nursing bed to solve at least one of the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model discloses a hydraulic buffer and shock absorption device for the folding part of a nursing bed, including several hydraulic buffer rods, which are movably connected to the bed board. The other end of the hydraulic buffer rods is movably connected to the folding part of the nursing bed. Several air boxes are also installed on the bed board, and airbags are provided through the air boxes. The airbags are used to support the folding part of the nursing bed.

[0006] Preferably, the bed board is provided with several grooves, the hydraulic buffer rod is hinged in the grooves, and the other end of the hydraulic buffer rod is hinged to the folding part.

[0007] Preferably, a drive box is fixedly installed on the bed board, a drive plate is slidably installed inside the drive box, a number of buffer rods are fixedly installed on the upper end of the drive plate, and a spring is sleeved on the buffer rods. One end of the spring is fixedly connected to the drive plate, and the other end of the spring is fixedly connected to the upper inner wall of the drive box.

[0008] Preferably, several buffer rods slide upwards and extend out of the drive box, and the several buffer rods are fixedly connected to the same buffer plate.

[0009] Preferably, a plurality of springs are fixedly provided at the lower end of the drive board, and the other end of the springs is fixedly connected to the lower surface of the drive box.

[0010] Preferably, the drive plate is slidably connected to the front and rear inner walls and the left inner wall of the drive box, and the right end of the drive plate is set in a trapezoidal shape.

[0011] Preferably, a trapezoidal rod is symmetrically and slidably installed through the right side wall of the drive box. The trapezoidal rod cooperates with the drive plate, and a square block is fixedly installed at the other end of the trapezoidal rod. The square block is slidably connected to the bed board.

[0012] Preferably, a thrust rod is fixedly connected to the other end of the square block, the thrust rod slides into the air box, and a thrust plate is slidably installed inside the air box.

[0013] Preferably, a spring three is fitted on the thrust rod, one end of the spring three is fixedly connected to the inner wall of the air box, and the other end of the spring three is fixedly connected to the thrust plate.

[0014] Preferably, a through-hole is provided on the upper right side wall of the air box, and the through-hole is connected to the airbag.

[0015] Compared with the prior art, this utility model provides a hydraulic buffer and shock absorption device for the folding part of a nursing bed. This utility model forms a multi-buffering mechanism through the combination design of several hydraulic buffer rods and several airbags. The hydraulic buffer rods can distribute the load and provide basic damping force; at the same time, the airbags on the bed board provide flexible support for the folding part. When the back panel returns to its original position and sinks, the airbags will generate a reverse support force as the pressure increases. Working together with the hydraulic buffer rods, it can effectively slow down the sinking speed of the folding part and quickly absorb the impact force in case of sudden accidents (such as a sudden increase in load due to the failure of the suspension mechanism), which greatly reduces the impact risk during movement and structurally improves the safety and stability of the folding part of the nursing bed. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 For the present utility model Figure 1 Partial top view of the structure; Figure 3 This is a schematic diagram of the internal structure of the drive box of this utility model; Figure 4This is a schematic diagram of the drive mechanism of the thrust plate of this utility model.

[0017] In the diagram: 1. Bed board; 2. Wheels; 3. Drive box; 4. Armrests; 5. Hydraulic buffer rod; 6. Folding section; 7. Seat cushion; 8. Buffer plate; 9. Guide wheel; 10. Square block; 11. Air box; 12. Buffer rod; 13. Spring 1; 14. Drive plate; 15. Spring 2; 16. Trapezoidal rod; 17. Air push rod; 18. Air push plate; 19. Spring 3; 20. Airbag; 21. Groove; 22. Leg rest. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0019] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] Example 1: This embodiment of the present invention provides a hydraulic buffer and shock absorption device for the folding part of a nursing bed, such as... Figures 1-4 As shown, the device includes several hydraulic buffer rods 5, which are movably connected to the bed board 1. The other end of each hydraulic buffer rod 5 is movably connected to the folding part 6 of the nursing bed. Several air boxes 11 are also installed on the bed board 1. An air bag 20 is provided through the air box 11. The air bag 20 is used to support the folding part 6 of the nursing bed.

[0022] Preferably, the bed board 1 is provided with a plurality of grooves 21, the hydraulic buffer rod 5 is hinged in the grooves 21, and the other end of the hydraulic buffer rod 5 is hinged to the folding part 6.

[0023] The bed board 1 is symmetrically equipped with armrests 4, and several traveling wheels 2 and several guide wheels 9 are installed on the lower surface of the bed board 1. A seat cushion 7 is also installed on the bed board 1. The folding part 6 is movably connected to the seat cushion 7. A leg support part 22 is also movably installed on the seat cushion 7. An inclined surface is provided on the bed board 1, and the leg support part 22 is in contact with the inclined surface.

[0024] The leg support 22 adjusts its position according to the state of the folding part 6 under the action of the inclined surface of the bed board 1, ensuring the adaptability of the patient's body posture. The walking wheels 2 and guide wheels 9 facilitate the overall movement of the bed.

[0025] An angle suspension mechanism can also be installed at the connection point between the bed board 1 and the seat cushion 7 to further increase the safety and stability of the folding part of the nursing bed.

[0026] The working principle and beneficial effects of the above technical solution are as follows: When the folding part 6 (such as the backrest) of the nursing bed is adjusted in angle (especially when it is returned to a flat position from a semi-sitting position), several hydraulic buffer rods 5 extend and retract between the groove 21 of the bed board 1 and the folding part 6 through the hinge structure, and use the hydraulic damping characteristics to provide basic buffering force to slow down the movement speed of the folding part 6; at the same time, the folding part 6 will come into contact with the airbag 20 during rotation. As the folding part 6 sinks, the airbag 20 is compressed and the internal air pressure increases, forming a reverse support force through the through structure of the air box 11, which works in conjunction with the hydraulic buffer rods 5 to enhance the buffering effect.

[0027] A multi-buffered buffer mechanism is formed by combining several hydraulic buffer rods 5 and several airbags 20. The hydraulic buffer rods 5 can distribute the load and provide basic damping force. At the same time, the airbags 20 on the bed board 1 provide flexible support for the folding part 6 (such as the back panel). When the folding part 6 returns to its original position and sinks, the airbags 20 will generate a reverse support force as the pressure increases. Working together with the hydraulic buffer rods 5, it can effectively slow down the sinking speed of the folding part 6 (such as the back panel) and quickly absorb the impact force in case of sudden accidents (such as a sudden increase in load caused by the failure of the suspension mechanism). This greatly reduces the impact risk during movement and structurally improves the safety and stability of the folding part of the nursing bed. Example 2: Based on Example 1 above, as follows Figures 1-4 As shown, a drive box 3 is fixedly installed on the bed board 1, and a drive plate 14 is slidably installed inside the drive box 3. Several buffer rods 12 are fixedly installed on the upper end of the drive plate 14, and springs 13 are sleeved on the buffer rods 12. One end of the springs 13 is fixedly connected to the drive plate 14, and the other end of the springs 13 is fixedly connected to the upper inner wall of the drive box 3.

[0028] Preferably, several buffer rods 12 slide upwards and extend out of the drive box 3, and the several buffer rods 12 are fixedly connected to the same buffer plate 8.

[0029] Preferably, a plurality of springs 15 are fixedly provided at the lower end of the drive plate 14, and the other end of the springs 15 is fixedly connected to the lower surface of the drive box 3.

[0030] The working principle and beneficial effects of the above technical solution are as follows: When the folding part 6 is flat, the pressure is transmitted to the buffer plate 8, causing the buffer plate 8 to slide several buffer rods 12 into the drive box 3, thereby pushing the drive plate 14 to move downward in the drive box 3. At this time, the spring 13 at the upper end of the drive plate 14 is compressed, generating an upward elastic force, which forms an initial buffer against the pressure; at the same time, the spring 15 at the lower end of the drive plate 14 is also compressed, further absorbing the impact force. Through the elastic deformation of the spring 13 and the spring 15, the external force is converted into elastic potential energy, realizing multi-level buffering, and further absorbing the impact force generated by the movement of the folding part 6 or the patient's movement. Example 3: Based on Example 2 above, as follows Figures 1-4 As shown, the drive plate 14 is slidably connected to the front and rear inner walls and the left inner wall of the drive box 3, and the right end of the drive plate 14 is set as a trapezoid.

[0031] Preferably, a trapezoidal rod 16 is symmetrically and slidably slidably through the right side wall of the drive box 3. The trapezoidal rod 16 cooperates with the drive plate 14. A square block 10 is fixedly installed at the other end of the trapezoidal rod 16. The square block 10 is slidably connected to the bed board 1.

[0032] Preferably, the other end of the square block 10 is fixedly connected to a push rod 17, the push rod 17 slides into the air box 11, and a push plate 18 is slidably arranged inside the air box 11.

[0033] The working principle and beneficial effects of the above technical solution are as follows: When the folding part 6 begins to flatten, the folding part 6 will first come into contact with the airbag 20. The airbag 20 will undergo initial deformation due to pressure and provide initial support force for the folding part 6 through its own elastic contraction. As the folding part 6 gradually flattens, the folding part 6 will come into contact with the buffer plate 8, causing the buffer plate 8 to descend. The buffer plate 8 will cause the buffer rod 12 and the drive plate 14 to descend. The drive plate 14 will push the trapezoidal rod 16 to slide outward of the drive box 3. The trapezoidal rod 16 will cause the square block 10 to slide on the bed board 1, thereby pushing the push rod 17 to move into the air box 11, causing the push plate 18 to slide in the air box 11, compressing the gas in the air box 11, and allowing the gas to enter the airbag 20. Under the dual action of external pressure and internal inflation, the airbag 20 will change from passive contraction to active expansion. During the expansion process, the contact area between the airbag 20 and the folding part 6 will gradually increase, the support points will be more uniform, and the support force will be significantly enhanced with the increase of inflation. By cooperating with the trapezoidal structure of the drive plate 14 and the trapezoidal rod 16, the vertical force generated during the buffering process is converted into the lateral force that pushes the air plate 18, so that the support force of the airbag 20 increases continuously as the folding part 6 is flattened, and the buffering effect also increases continuously, further improving the stability of the buffering and shock absorption effect. Example 4: Based on Example 3 above, as follows Figure 4 As shown, a spring 19 is fitted on the air push rod 17. One end of the spring 19 is fixedly connected to the inner wall of the air box 11, and the other end of the spring 19 is fixedly connected to the air push plate 18.

[0034] Preferably, a through-hole is provided on the upper right side wall of the air box 11, and the through-hole is connected to the airbag 20.

[0035] The working principle and beneficial effects of the above technical solution are as follows: When the push rod 17 pushes the push plate 18 to slide and compress the gas in the air box 11, the spring 19 sleeved on the push rod 17 will be stretched by the push plate 18 to generate elastic force, thereby forming a damping effect on the sliding of the push plate 18, making the gas compression process smoother, and thus making the gas flow and pressure changes in the airbag 20 more stable.

[0036] When the folding part 6 changes from flat to folded, that is, when the drive plate 14 and other components are reset, the thrust on the air push plate 18 disappears, the compressed spring 19 releases elastic potential energy, and pushes the air push plate 18 and the air push rod 17 to slide back to reset in the opposite direction. A negative pressure is formed in the air box 11, and some of the gas in the airbag 20 flows back to the air box 11 through the through-hole, causing the airbag 20 to contract and return to its initial state. Similarly, the trapezoidal rod 16 also returns to its initial state.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention.

Claims

1. A hydraulic buffer and shock absorption device for the folding part of a nursing bed, characterized in that, It includes several hydraulic buffer rods (5), which are movably connected to the bed board (1). The other end of the hydraulic buffer rods (5) is movably connected to the folding part (6) of the nursing bed. Several air boxes (11) are also installed on the bed board (1). An air bag (20) is provided through the air box (11). The air bag (20) is used to support the folding part (6) of the nursing bed.

2. The hydraulic buffer and shock absorption device for the folding part of a nursing bed according to claim 1, characterized in that, The bed board (1) has several grooves (21), the hydraulic buffer rod (5) is hinged in the groove (21), and the other end of the hydraulic buffer rod (5) is hinged on the folding part (6).

3. The hydraulic buffer and shock absorption device for the folding part of a nursing bed according to claim 1, characterized in that, A drive box (3) is fixedly installed on the bed board (1). A drive plate (14) is slidably installed inside the drive box (3). Several buffer rods (12) are fixedly installed on the upper end of the drive plate (14). A spring (13) is sleeved on the several buffer rods (12). One end of the spring (13) is fixedly connected to the drive plate (14), and the other end of the spring (13) is fixedly connected to the upper inner wall of the drive box (3).

4. The hydraulic buffer and shock absorption device for the folding part of a nursing bed according to claim 3, characterized in that, Several buffer rods (12) slide upward and extend out of the drive box (3), and several buffer rods (12) are fixedly connected to the same buffer plate (8).

5. The hydraulic buffer and shock absorption device for the folding part of a nursing bed according to claim 3, characterized in that, Several springs (15) are fixedly installed at the lower end of the drive plate (14), and the other end of the springs (15) is fixedly connected to the lower surface of the drive box (3).

6. The hydraulic buffer and shock absorption device for the folding part of a nursing bed according to claim 3, characterized in that, The drive plate (14) is slidably connected to the front and rear inner walls and the left inner wall of the drive box (3), and the right end of the drive plate (14) is set as a trapezoid.

7. The hydraulic buffer and shock absorption device for the folding part of a nursing bed according to claim 6, characterized in that, A trapezoidal rod (16) is symmetrically slidably through the right side wall of the drive box (3). The trapezoidal rod (16) cooperates with the drive plate (14). A square block (10) is fixedly installed at the other end of the trapezoidal rod (16). The square block (10) is slidably connected to the bed board (1).

8. The hydraulic buffer and shock absorption device for the folding part of a nursing bed according to claim 7, characterized in that, The other end of the square block (10) is fixedly connected to a push rod (17), which slides into the air box (11). A push plate (18) is slidably installed inside the air box (11).

9. The hydraulic buffer and shock absorption device for the folding part of a nursing bed according to claim 8, characterized in that, Spring 3 (19) is fitted on the air push rod (17). One end of spring 3 (19) is fixedly connected to the inner wall of the air box (11), and the other end of spring 3 (19) is fixedly connected to the air push plate (18).

10. The hydraulic buffer and shock absorption device for the folding part of a nursing bed according to claim 9, characterized in that, An opening is provided on the upper right side wall of the air box (11), and the opening is connected to the airbag (20).

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