Nursing bed

Abstract

The invention discloses a nursing bed, and relates to the technical field of nursing equipment for the aged, the nursing bed comprises a bed bottom frame, the front end of the bed bottom frame is provided with a bed head frame, the bed bottom frame is provided with a bed board and a lifting mechanism used for adjusting the height of the bed board, and the side part of the bed board is provided with a protective structure; the protection structure comprises a first guardrail, a second guardrail, a third guardrail, a driving rod and a power mechanism, the first guardrail is connected with the bed board, the rear end of the first guardrail is rotationally connected with the front end of the second guardrail through a first rotating shaft, the rear end of the second guardrail is rotationally connected with the front end of the third guardrail through a second rotating shaft, and an extension part is arranged at the bottom of the front end of the third guardrail; the front end of the extension part is rotationally connected with the rear end of the driving rod through a third rotating shaft, the front end of the driving rod is rotationally connected with the bottom of the middle of the first guardrail through a fourth rotating shaft, and a power mechanism is arranged at the bottom of the first guardrail and used for driving the driving rod to rotate. The grabbing range can be expanded, and grabbing is conveniently provided for old people.

Description

Technical Field

[0001] The present invention relates to the technical field of elderly care equipment, in particular to a nursing bed. Background Art

[0002] In the field of elderly care, self-care, semi-self-care and disability represent different levels of care. Self-care means that the brain is clear, the body is healthy, the movement is convenient, and the person can basically take care of his or her own food, clothing, housing and transportation, and does not need others to provide basic life care services. Semi-self-care means that the brain is clear and has full language expression ability, but due to poor physical condition or chronic diseases, the person's physical condition is more inconvenient to move, which affects the normal behavior ability. Disability means that the person is unable to take care of himself or herself and needs a dedicated person to provide comprehensive life care services.

[0003] For the elderly who can take care of themselves, there is basically no need to use a nursing bed. For the semi-independent and disabled elderly groups, it is necessary to choose a nursing bed with different functions. For the semi-independent elderly, the nursing bed used needs to have overall lifting and protection functions; for the disabled elderly, the nursing bed used needs to have back lifting, leg lifting, overall lifting, turning over, and helping excretion functions.

[0004] The nursing bed used by semi-independent elderly people includes a bed frame, a headboard is provided at the front end of the bed frame, a bed board and a lifting mechanism for adjusting the height of the bed board are provided on the bed frame, and a protective structure is provided on the side of the bed board. The protective structure currently used is a guardrail.

[0005] When getting in and out of bed, the elderly can use the guardrail to help them stand up or sit down. When standing up, the elderly often experience dizziness and blackouts (blackouts are a symptom of sudden blacking out and blurred vision) due to postural hypotension (postural hypotension usually refers to orthostatic hypotension, which is a condition in which blood pressure drops significantly when standing up quickly).

[0006] When the elderly feel dizzy or blackout, they are eager to find something to hold on to. However, since the current guardrail is only located at the side of the elderly, the holding range is small and it is inconvenient to provide the elderly with a handhold.

[0007] Therefore, how to expand the scope of grasping and supporting to facilitate providing grasping and supporting for the elderly is a technical problem that needs to be solved at present. Summary of the invention

[0008] The present invention aims at the above-mentioned deficiencies in the prior art and provides a nursing bed. The present invention can expand the grasping and supporting range and facilitate grasping and supporting for the elderly.

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] A nursing bed comprises a bed frame, a headboard is provided at the front end of the bed frame, a bed board and a lifting mechanism for adjusting the height of the bed board are provided on the bed frame, a protective structure is provided on the side of the bed board, the protective structure comprises a first guardrail, a second guardrail, a third guardrail, a driving rod, and a power mechanism, the first guardrail is connected to the bed board, the rear end of the first guardrail is rotatably connected to the front end of the second guardrail through a first rotating shaft, the rear end of the second guardrail is rotatably connected to the front end of the third guardrail through a second rotating shaft, an extension portion is provided at the bottom of the front end of the third guardrail, the front end of the extension portion is rotatably connected to the rear end of the driving rod through a third rotating shaft, the front end of the driving rod is rotatably connected to the middle bottom of the first guardrail through a fourth rotating shaft, and a power mechanism is provided at the bottom of the first guardrail, the power mechanism is used to drive the driving rod to rotate.

[0011] Furthermore, the protective structure is provided on both the left and right sides of the bed board.

[0012] Furthermore, the protective structure also includes a fourth guardrail, which is arranged on the side of the driving rod away from the second guardrail, a first protrusion is provided on the top of the fourth guardrail, a second protrusion is provided on the top of the second guardrail, a plastic bag is provided between the second guardrail and the fourth guardrail, a first handle and a second handle are provided on the top of the plastic bag, the first handle is hung on the first protrusion, and the second handle is hung on the second protrusion.

[0013] Furthermore, a plurality of second vertical rods are provided in the middle of the second guardrail, a plurality of fourth vertical rods are provided in the middle of the fourth guardrail, and the second vertical rods and the fourth vertical rods are arranged at intervals.

[0014] Furthermore, the power mechanism includes a power telescopic rod, a rack, and a gear. The gear is arranged at the bottom of the fourth rotating shaft. The fourth rotating shaft is fixedly connected to the driving rod. The fourth rotating shaft is rotatably connected to the first guardrail. The power telescopic rod is arranged at the bottom of the first guardrail. A rack is arranged at the output end of the power telescopic rod. The rack is arranged on the side of the gear away from the bed board, and the rack is meshed with the gear.

[0015] Furthermore, it also includes a distance expansion mechanism, which includes a sliding seat, a wedge seat, a guide rod, a fixed seat, and a spring. The sliding seat is arranged at the bottom of the first guardrail, and the sliding seat is slidably connected to the bottom of the bed board along the left and right straight direction. The bottom of the sliding seat is provided with a wedge seat, and the wedge seat is provided with an inclined surface, which cooperates with the side of the bed frame. The wedge seat is provided with a guide rod on the side away from the first guardrail, and the guide rod is slidably connected to the fixed seat along the left and right straight direction. The fixed seat is arranged at the bottom of the bed board, and a spring is sleeved on the guide rod, one end of the spring abuts against the fixed seat, and the other end of the spring abuts against the wedge seat;

[0016] When the height of the bed board is lowered, the side of the bed frame pushes the inclined surface of the wedge seat, so that the wedge seat overcomes the elastic force of the spring and slides toward the middle of the bed board. The wedge seat drives the sliding seat to slide toward the middle of the bed board, and the sliding seat drives the first guardrail close to the bed board.

[0017] Furthermore, the guide rod is provided with an anti-slip block at one end away from the wedge seat.

[0018] Furthermore, a slide rail is provided at the bottom of the bed board, and the slide rail extends in a left and right straight direction. A dovetail groove is provided at the top of the sliding seat, and the slide rail is slidably matched with the dovetail groove.

[0019] Furthermore, the lifting mechanism includes a first support frame, a second support frame, and a height-adjustable telescopic rod. The first support frame and the second support frame are arranged side by side, the first support frame is arranged between the second support frame and the headboard, the upper end of the first support frame and the upper end of the second support frame are both rotatably connected to the bottom of the bed board, the lower end of the first support frame and the lower end of the second support frame are both rotatably connected to the bed base frame, the upper end of the height-adjustable telescopic rod is rotatably connected to the middle part of the first support frame, and the lower end of the height-adjustable telescopic rod is rotatably connected to the front part of the bed base frame.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. When the power mechanism drives the driving rod to rotate 90°, the driving rod and the first guardrail are in a vertical state at a top-down angle, the second guardrail and the first guardrail are also in a vertical state at a top-down angle, the third guardrail and the first guardrail are in a parallel state at a top-down angle, and the third guardrail is in a state away from the side of the bed board. When the elderly sit on the side of the bed board, the third guardrail is located in front of the elderly, and the second guardrail and the first guardrail are both located on the side of the elderly, so that the elderly are in a semi-enclosed state. When the elderly stand up, if the elderly have symptoms of dizziness and blackouts and are eager to find a handrail, the third guardrail, the second guardrail, and the first guardrail can all provide the elderly with a grasping handrail. Compared with the background technology, the grasping handrail range is expanded, which is convenient for providing grasping handrails for the elderly.

[0022] 2. Because the third guardrail is facing the elderly sitting on the bed, the elderly can stand up by holding the third guardrail with both hands. Therefore, the third guardrail located in front of the elderly is more convenient for providing assistance to the elderly to stand up, which improves the convenience of use.

[0023] 3. When the driving rod and the first guardrail are in a collinear state at a top-down angle, the first guardrail, the second guardrail and the third guardrail are also in the same straight line. At this time, the first guardrail, the second guardrail and the third guardrail are all close to the side of the bed board, extending the protection length. When the elderly lie on the bed board, because the first guardrail, the second guardrail and the third guardrail are all close to the side of the bed board, the protection length is extended, so the elderly can be prevented from falling out of bed, improving the safety of use.

[0024] 4. When the driving rod and the first guardrail are vertical in a top-down view, the distance between the fourth guardrail and the second guardrail on the driving rod is at the maximum, the distance between the first protrusion and the second protrusion is at the maximum, and the distance between the first handle and the second handle on the top of the plastic bag is at the maximum, so that the plastic bag can be opened. It is convenient for the elderly to sit on the side of the bed board and throw garbage into the plastic bag.

[0025] 5. When the driving rod and the first guardrail are in a colinear state at a top-down angle, the distance between the fourth guardrail and the second guardrail on the driving rod is at a minimum, the distance between the first protrusion and the second protrusion is at a minimum, and the distance between the first handle and the second handle on the top of the plastic bag is at a minimum, so that the plastic bag can be closed and the plastic bag is in an unusable state. If a small amount of garbage is contained in the plastic bag, the closed plastic bag can prevent the smell from escaping and improve the comfort of use.

[0026] 6. When the bed board is raised, the distance expansion mechanism can increase the distance between the protective structure and the side of the bed board; when the bed board is lowered, the distance expansion mechanism can reduce the distance between the protective structure and the side of the bed board. When the elderly are laying the bed sheet, the bed board is in a raised state, and the protective structure is away from the bed board, which makes it convenient for the elderly to lay the side of the bed sheet between the side of the bed board and the protective structure; when the bed board is moved down and reset, the side of the bed sheet is sandwiched between the side of the bed board and the protective structure. There is no need for the elderly to manually insert the side of the bed sheet between the side of the bed board and the protective structure, which is more convenient for laying. It also reduces the risk of the elderly being scratched by the bed board and the protective structure, and improves the safety of laying the bed sheet.

[0027] 7. Because the side of the sheet can be clamped between the side of the bed board and the protective structure, it is convenient to maintain the flatness of the sheet, which is beneficial to improving the laying effect.

[0028] 8. When the telescopic rod in the lifting mechanism is extended, the bed board is not only raised, but the front end of the bed board is also away from the bed head frame; when the telescopic rod is shortened, the bed board is not only lowered, but the front end of the bed board is close to the bed head frame again. Because the front end of the bed board is away from the bed head frame, it is convenient for the elderly to spread the front end of the bed sheet between the front end of the bed board and the bed head frame; when the bed board is lowered and reset, the front end of the bed sheet is sandwiched between the front end of the bed board and the bed head frame. There is no need for the elderly to manually insert the front end of the bed sheet between the front end of the bed board and the bed head frame, which further facilitates laying. It also reduces the risk of the elderly being scratched by the bed board and the bed head frame, further improving the safety of laying the bed sheet.

[0029] 9. Because the front end of the sheet can be clamped between the front end of the bed board and the headboard, it is further convenient to maintain the flatness of the sheet, which is conducive to further improving the laying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Three-dimensional nursing bed without protective structure and extension mechanism Figure 1 ;

[0031] Figure 2 Three-dimensional nursing bed without protective structure and extension mechanism Figure 2 ;

[0032] Figure 3 Three-dimensional nursing bed without protective structure and extension mechanism Figure 3 ;

[0033] Figure 4 The front view of the nursing bed without the protective structure and the extension mechanism;

[0034] Figure 5 Three-dimensional protective structure Figure 1 ;

[0035] Figure 6 Three-dimensional protective structure Figure 2 ;

[0036] Figure 7 This is the main view of the protective structure;

[0037] Figure 8 Three-dimensional power mechanism Figure 1 ;

[0038] Fig. 9 Three-dimensional power mechanism Figure 2 ;

[0039] Fig.10 Assemble the protective structure, the extension mechanism and the plastic bag Figure 1 ;

[0040] Fig.11 Assemble the protective structure, the extension mechanism and the plastic bag Figure 2 ;

[0041] Fig.12 Assemble the protective structure, the extension mechanism and the plastic bag Figure 3 ;

[0042] Fig.13 It is a top view of the assembly of the protective structure, the expansion mechanism and the plastic bag;

[0043] Fig.14 Three-dimensional nursing bed Figure 1 ;

[0044] Fig.15 Three-dimensional nursing bed Figure 2 ;

[0045] Fig.16 This is the main view of the nursing bed;

[0046] Fig.17 This is the left view of the nursing bed;

[0047] Fig.18 This is a top view of a nursing bed;

[0048] Fig.19 This is a three-dimensional diagram of the protective structure of Example 5.

[0049] Description of reference numerals:

[0050] 1-Bed frame,

[0051] 2-Bedside frame,

[0052] 3-bed board, 31-slide rail,

[0053] 4- Mattress,

[0054] 5- Protective structure,

[0055] 51-first guardrail, 511-first crossbar, 5111-first rotating shaft, 512-first vertical bar,

[0056] 52-second guardrail, 521-second crossbar, 5211-second rotating shaft, 522-second vertical bar,

[0057] 53-third guardrail, 531-third crossbar, 5311-extension portion, 5312-third rotating shaft, 5313-second protrusion, 532-third vertical bar, 533-reinforcement bar, 534-castor,

[0058] 54-driving rod, 541-fourth rotating shaft,

[0059] 55-power mechanism, 551-power telescopic rod, 552-rack, 553-gear,

[0060] 56- fourth guardrail, 561- fourth horizontal bar, 5611- first protrusion, 562- fourth vertical bar,

[0061] 6- plastic bag, 61- first handle, 62- second handle,

[0062] 7- Extension mechanism,

[0063] 71-sliding seat, 711-dovetail groove,

[0064] 72-wedge seat, 721-slope,

[0065] 73-guide rod, 731-anti-drop block,

[0066] 74-fixed seat, 741-guide hole,

[0067] 75-spring,

[0068] 8-lifting mechanism, 81-first supporting frame, 82-second supporting frame, 83-heightening telescopic rod. DETAILED DESCRIPTION

[0069] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0070] Embodiment 1:

[0071] See also Figures 1 to 4 The nursing bed comprises a bed frame 1, a headboard 2 is fixedly mounted on the front end of the bed frame 1, a bed board 3 and a lifting mechanism 8 for adjusting the height of the bed board 3 are arranged on the bed frame 1, and a mattress 4 is laid on the top surface of the bed board 3.

[0072] The right side of the bed board 3 is provided with a protective structure 5; or, the left side of the bed board 3 is provided with a protective structure 5; or, both the left and right sides of the bed board 3 are provided with a protective structure 5. In this embodiment 1, see Figures 14 to 18 , protective structures 5 are provided on both the left and right sides of the bed board 3.

[0073] See also Figures 5 to 13 The protective structure 5 includes a first guardrail 51, a second guardrail 52, a third guardrail 53, a driving rod 54, and a power mechanism 55.

[0074] The first guardrail 51 is installed on the left and right sides of the bed board 3. Figure 5 The first guardrail 51 includes a first crossbar 511 and a first vertical bar 512. Two first crossbars 511 are provided, and a plurality of first vertical bars 512 are provided between the two first crossbars 511. The first vertical bars 512 are fixed to the first crossbar 511 by welding.

[0075] See also Figure 5 The second guardrail 52 includes a second crossbar 521 and a second vertical bar 522. Two second crossbars 521 are provided, and a plurality of second vertical bars 522 are provided between the two second crossbars 521. The second vertical bars 522 are welded and fixed to the second crossbar 521. The front ends of the two second crossbars 521 are provided between the rear ends of the two first crossbars 511, and the rear ends of the first crossbars 511 are rotatably connected to the front ends of the second crossbars 521 through the first rotating shaft 5111.

[0076] See also Figure 5The third guardrail 53 includes a third crossbar 531 and a third vertical bar 532. Two third crossbars 531 are provided, and a plurality of third vertical bars 532 are provided between the two third crossbars 531. The third vertical bars 532 are welded and fixed to the third crossbar 531. The rear ends of the two second crossbars 521 are provided between the front ends of the two third crossbars 531, and the rear ends of the second crossbars 521 are rotatably connected to the front ends of the third crossbars 531 through the second rotating shaft 5211. The front end of the third crossbar 531 located below the third vertical bar 532 is provided with an extension portion 5311, and the extension portion 5311 and the third crossbar 531 are an integral structure.

[0077] See also Figure 5 The front end of the extension portion 5311 is rotatably connected to the rear end of the driving rod 54 through the third rotating shaft 5312. Figure 6 A fourth rotating shaft 541 is welded and fixed to the front end of the driving rod 54 , and the fourth rotating shaft 541 is rotatably connected to the middle bottom of the first horizontal rod 511 located at the lower end of the first vertical rod 512 .

[0078] See also Figure 7 In a top view, the first guardrail 51, the second guardrail 52, the extension portion 5311, and the driving rod 54 form a parallelogram structure.

[0079] See also Figure 6 , Figure 8 and Fig. 9 The power mechanism 55 is used to drive the driving rod 54 to rotate. The power mechanism 55 includes a power telescopic rod 551, a rack 552, and a gear 553. The gear 553 is fixedly installed at the bottom of the fourth rotating shaft 541, the power telescopic rod 551 is fixedly installed at the bottom of the first guardrail 51, and the output end of the power telescopic rod 551 is fixedly installed with a rack 552, which is arranged on the side of the gear 553 away from the bed board 3, and the rack 552 is meshed with the gear 553. The power telescopic rod 551 can be a cylinder or an oil cylinder.

[0080] The working principle of this embodiment 1 is as follows:

[0081] (1) When the output end of the power telescopic rod 551 in the power mechanism 55 is extended, the rack 552 at the output end of the power telescopic rod 551 pushes the gear 553 to rotate 90°, the gear 553 drives the fourth rotating shaft 541 to rotate 90°, and the fourth rotating shaft 541 drives the driving rod 54 to rotate 90°, so that the driving rod 54 and the first guardrail 51 are in a vertical state when viewed from above, the second guardrail 52 and the first guardrail 51 are also in a vertical state when viewed from above, the third guardrail 53 and the first guardrail 51 are in a parallel state when viewed from above, and the third guardrail 53 is in a state of leaving the side of the bed board 3.

[0082] When the elderly sits on the side of the bed board 3, the third guardrail 53 is located in front of the elderly, and the second guardrail 52 and the first guardrail 51 are both located on the side of the elderly, so that the elderly is in a semi-enclosed state.

[0083] When the elderly stand up, if they feel dizzy or blackout and are eager to find a handrail, the third guardrail 53, the second guardrail 52, and the first guardrail 51 can all provide the elderly with a handrail. Compared with the background technology, the handrail range is expanded, making it easier to provide handrails for the elderly.

[0084] Furthermore, because the third guardrail 53 faces the elderly sitting on the bed board 3, the elderly can stand up by holding the third guardrail 53 with both hands. Therefore, the third guardrail 53 located in front of the elderly is more convenient for providing assistance to the elderly to stand up, thereby improving ease of use.

[0085] (2) When the output end of the power telescopic rod 551 in the power mechanism 55 is retracted, the rack 552 at the output end of the power telescopic rod 551 pushes the gear 553 to rotate 90° in the opposite direction, and the gear 553 drives the fourth rotating shaft 541 to rotate 90° in the opposite direction, and the fourth rotating shaft 541 drives the driving rod 54 to rotate 90° in the opposite direction, so that the driving rod 54 and the first guardrail 51 are in a colinear state in a top-down view, and the first guardrail 51, the second guardrail 52 and the third guardrail 53 are also in the same straight line. At this time, the first guardrail 51, the second guardrail 52 and the third guardrail 53 are all close to the side of the bed board 3, extending the protection length.

[0086] When an elderly person lies on the bed board 3, because the first guardrail 51, the second guardrail 52 and the third guardrail 53 are all close to the side of the bed board 3, the protection length is extended, so the elderly person can be prevented from falling out of bed, thereby improving the safety of use.

[0087] Embodiment 2:

[0088] This embodiment 2 is further improved on the basis of embodiment 1:

[0089] See also Figure 5 The protection structure 5 further includes a fourth guardrail 56. The fourth guardrail 56 is disposed on the side of the driving rod 54 away from the second guardrail 52. The fourth guardrail 56 includes a fourth crossbar 561 and a fourth vertical bar 562. The fourth crossbar 561 is provided with a plurality of fourth vertical bars 562, the upper ends of the fourth vertical bars 562 are welded and fixed to the fourth crossbar 561, and the lower ends of the fourth vertical bars 562 are welded and fixed to the driving rod 54.

[0090] See also Figure 5 The fourth vertical rod 562 is spaced apart from the second vertical rod 522 .

[0091] See also Fig.13A first protrusion 5611 is fixedly mounted on the fourth cross bar 561 , and a second protrusion 5313 is fixedly mounted on the third cross bar 531 located above the third vertical bar 532 .

[0092] See also Fig.13 A plastic bag 6 is provided between the second guardrail 52 and the fourth guardrail 56 , and a first handle 61 and a second handle 62 are provided on the top of the plastic bag 6 . The first handle 61 is hung on the first protrusion 5611 , and the second handle 62 is hung on the second protrusion 5313 .

[0093] The working principle of this embodiment 2 is as follows:

[0094] (1) When the power mechanism 55 drives the driving rod 54 to rotate 90°, the driving rod 54 and the first guardrail 51 are vertical in a top-down view, the second guardrail 52 and the first guardrail 51 are also vertical in a top-down view, the third guardrail 53 and the first guardrail 51 are parallel in a top-down view, and the third guardrail 53 is away from the side of the bed board 3.

[0095] When the driving rod 54 and the first guardrail 51 are in a vertical state in a top view, the distance between the fourth guardrail 56 and the second guardrail 52 on the driving rod 54 is at the maximum state, the distance between the first protrusion 5611 and the second protrusion 5313 is at the maximum state, and the distance between the first handle 61 and the second handle 62 at the top of the plastic bag 6 is at the maximum state, so that the plastic bag 6 can be opened. It is convenient for the elderly to throw garbage into the plastic bag 6 while sitting on the side of the bed board 3.

[0096] (2) When the power mechanism 55 drives the driving rod 54 to rotate 90° in the opposite direction, the driving rod 54 and the first guardrail 51 are in a colinear state in a top view, and the first guardrail 51, the second guardrail 52 and the third guardrail 53 are also in the same straight line. At this time, the first guardrail 51, the second guardrail 52 and the third guardrail 53 are all close to the side of the bed board 3, extending the protection length.

[0097] When the driving rod 54 and the first guardrail 51 are in a colinear state in a top view, the distance between the fourth guardrail 56 and the second guardrail 52 on the driving rod 54 is at a minimum, the distance between the first protrusion 5611 and the second protrusion 5313 is at a minimum, and the distance between the first handle 61 and the second handle 62 at the top of the plastic bag 6 is at a minimum, so that the plastic bag 6 can be closed and the plastic bag 6 is in an unusable state. If a small amount of garbage is contained in the plastic bag 6, the closed plastic bag 6 can prevent the smell from escaping, thereby improving the comfort of use.

[0098] Embodiment 3:

[0099] This embodiment 3 is further improved on the basis of embodiment 1:

[0100] See also Fig.10The nursing bed also includes an expansion mechanism 7. The expansion mechanism 7 includes a sliding seat 71, a wedge seat 72, a guide rod 73, a fixed seat 74, and a spring 75.

[0101] See also Fig.10 In the first guardrail 51, a sliding seat 71 is fixedly installed on the side of the first cross bar 511 located at the lower end of the first vertical bar 512. A dovetail groove 711 is provided on the top surface of the sliding seat 71. Figure 3 A slide rail 31 is fixedly installed at the bottom of the bed board 3. The slide rail 31 extends in a left-right straight direction, and the slide rail 31 is slidably matched with the dovetail groove 711.

[0102] See also Fig.11 The wedge seat 72 is fixedly installed at the bottom of the sliding seat 71 . The wedge seat 72 is provided with an inclined surface 721 . The inclined surface 721 faces the first guardrail 51 . The inclined surface 721 is used to cooperate with the side of the bed frame 1 .

[0103] See also Fig.10 The guide rod 73 is fixedly mounted on the side of the wedge seat 72 away from the first guardrail 51. Figure 4 The bottom of the bed plate 3 is fixedly mounted with a fixing seat 74. Fig.12 The fixing seat 74 is provided with a guide hole 741, and the guide rod 73 is slidably matched with the guide hole 741 along the left and right straight line direction. Fig.13 The guide rod 73 is fixedly provided with an anti-dropping block 731 at one end away from the wedge seat 72, and the anti-dropping block 731 is used to prevent the guide rod 73 from escaping from the guide hole 741. A spring 75 is sleeved on the guide rod 73, one end of the spring 75 abuts against the fixed seat 74, and the other end of the spring 75 abuts against the wedge seat 72, and the spring 75 is used to push the wedge seat 72 to move in a direction away from the fixed seat 74.

[0104] The working principle of this embodiment 3 is as follows:

[0105] (1) When the bed board 3 is raised: the bed board 3 drives the wedge seat 72 to move upward together. Under the push of the spring 75, the wedge seat 72 moves away from the middle of the bed board 3. The wedge seat 72 drives the sliding seat 71 to move away from the middle of the bed board 3. The sliding seat 71 drives the protective structure 5 to move away from the middle of the bed board 3, so that the protective structure 5 leaves the side of the bed board 3.

[0106] (2) When the bed board 3 is lowered: the bed board 3 drives the wedge seat 72 to move downward together, and the inclined surface 721 of the wedge seat 72 contacts the side of the bed base frame 1. As the wedge seat 72 moves downward, the side of the bed base frame 1 pushes the inclined surface 721 of the wedge seat 72, so that the wedge seat 72 overcomes the elastic force of the spring 75 and slides toward the middle of the bed board 3. The wedge seat 72 drives the sliding seat 71 to slide toward the middle of the bed board 3, and the sliding seat 71 drives the protective structure 5 to approach the side of the bed board 3.

[0107] According to the above working principle of the present embodiment 3, it can be known that the present embodiment 3 has the following effects:

[0108] When the bed board 3 is raised, the distance expansion mechanism 7 can increase the distance between the protective structure 5 and the side of the bed board 3; when the bed board 3 is lowered, the distance expansion mechanism 7 can reduce the distance between the protective structure 5 and the side of the bed board 3. When the elderly are laying the bed sheet, the bed board 3 is in a raised state, and the protective structure 5 is away from the bed board 3, which can facilitate the elderly to lay the side of the bed sheet between the side of the bed board 3 and the protective structure 5; when the bed board 3 is moved down and reset, the side of the bed sheet is sandwiched between the side of the bed board 3 and the protective structure 5. There is no need for the elderly to manually insert the side of the bed sheet between the side of the bed board 3 and the protective structure 5, which is more convenient for laying, reduces the risk of the elderly being scratched by the bed board 3 and the protective structure 5, and improves the safety of laying the bed sheet.

[0109] Furthermore, because the side of the bed sheet can be clamped between the side of the bed board 3 and the protective structure 5, it is convenient to maintain the flatness of the bed sheet, which is beneficial to improving the laying effect.

[0110] Embodiment 4:

[0111] This embodiment 4 is further improved on the basis of embodiment 1, embodiment 2 or embodiment 3:

[0112] See also Figure 2 , Figure 3 and Figure 4 The lifting mechanism 8 includes a first support frame 81, a second support frame 82, and a height-adjusting telescopic rod 83. The first support frame 81 and the second support frame 82 are arranged side by side, the first support frame 81 is arranged between the second support frame 82 and the bedside frame 2, the upper end of the first support frame 81 and the upper end of the second support frame 82 are both rotatably connected to the bottom of the bed board 3, the lower end of the first support frame 81 and the lower end of the second support frame 82 are both rotatably connected to the bed bottom frame 1, the upper end of the height-adjusting telescopic rod 83 is rotatably connected to the middle part of the first support frame 81, and the lower end of the height-adjusting telescopic rod 83 is rotatably connected to the front part of the bed bottom frame 1. The height-adjusting telescopic rod 83 can be a cylinder, a pneumatic cylinder, or an electric push rod.

[0113] See also Figure 4 From a front view angle, the first support frame 81, the second support frame 82, the bed base frame 1, and the bed board 3 form a parallelogram structure.

[0114] The working principle of this embodiment 4 is as follows:

[0115] (1) When raising the bed board 3: the telescopic rod 83 is extended, and the telescopic rod 83 is driven to swing the front end of the first support frame 81 backward and upward, and the first support frame 81 drives the bed board 3 to be raised and moved backward, so that the height of the bed board 3 is increased, and the front end of the bed board 3 leaves the bed head frame 2. Because the first support frame 81, the second support frame 82, the bed base frame 1, and the bed board 3 form a parallelogram structure, the second support frame 82 and the first support frame 81 have the same action, so that the bed board 3 can be raised and moved backward smoothly.

[0116] (2) When lowering the bed board 3: the telescopic rod 83 is adjusted to shorten, and the telescopic rod 83 is adjusted to drive the front end of the first support frame 81 to swing forward and downward, and the first support frame 81 drives the bed board 3 to lower and move forward, so that the height of the bed board 3 is reduced, and the front end of the bed board 3 is close to the bedside frame 2. Because the first support frame 81, the second support frame 82, the bed frame 1, and the bed board 3 form a parallelogram structure, the second support frame 82 and the first support frame 81 have the same action, so that the bed board 3 can be smoothly reset.

[0117] According to the above working principle of the present embodiment 4, it can be known that the present embodiment 4 has the following effects:

[0118] In the present embodiment 4, the bed frame 1, the bed board 3, the first support frame 81 and the second support frame 82 in the lifting mechanism 8 can form a parallelogram structure. By arranging the height adjustment telescopic rod 83 in the lifting mechanism 8 at the front of the bed frame 1, when the height adjustment telescopic rod 83 is extended, the first support frame 81 can be driven to swing backward and upward, and the first support frame 81 drives the bed board 3 to swing backward and upward, so that the bed board 3 can be raised and the front end of the bed board 3 can be separated from the bedside frame 2.

[0119] Therefore, the elderly do not need to bend over when laying the bed sheets, which reduces the risk of causing pain in the waist, legs and cervical spine and improves safety of use.

[0120] In addition, because the front end of the bed board 3 is away from the bed head frame 2, it is convenient for the elderly to spread the front end of the bed sheet between the front end of the bed board 3 and the bed head frame 2; when the bed board 3 is lowered and reset, the front end of the bed sheet is sandwiched between the front end of the bed board 3 and the bed head frame 2. The elderly do not need to manually insert the front end of the bed sheet between the front end of the bed board 3 and the bed head frame 2, which further facilitates laying. It also reduces the risk of the elderly being scratched by the bed board 3 and the bed head frame 2, and further improves the safety of laying the bed sheet.

[0121] Furthermore, because the front end of the bed sheet can be clamped between the front end of the bed board 3 and the bedside frame 2, it is further convenient to maintain the flatness of the bed sheet, which is beneficial to further improve the laying effect.

[0122] Embodiment 5:

[0123] In order to improve the supporting performance of the protective structure 5, see Fig.19A reinforcing rod 533 is welded and fixed at the bottom of the third guardrail 53, and a caster 534 is installed at the bottom of the reinforcing rod 533, and the caster 534 is a universal wheel.

[0124] When the elderly stand up by holding the third guardrail 53, since the third guardrail 53 is supported on the ground by the reinforcing rod 533 and the caster 534, the third guardrail 53 is prevented from being in a suspended state, which can improve the supporting performance and the safety of use.

[0125] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A nursing bed, comprising a bed frame, a headboard is provided at the front end of the bed frame, a bed board and a lifting mechanism for adjusting the height of the bed board are provided on the bed frame, and a protective structure is provided on the side of the bed board, characterized in that: The protective structure includes a first guardrail, a second guardrail, a third guardrail, a driving rod, and a power mechanism. The first guardrail is connected to the bed board, the rear end of the first guardrail is rotatably connected to the front end of the second guardrail via a first rotating shaft, the rear end of the second guardrail is rotatably connected to the front end of the third guardrail via a second rotating shaft, an extension portion is provided at the bottom of the front end of the third guardrail, the front end of the extension portion is rotatably connected to the rear end of the driving rod via a third rotating shaft, the front end of the driving rod is rotatably connected to the middle bottom of the first guardrail via a fourth rotating shaft, and a power mechanism is provided at the bottom of the first guardrail, the power mechanism is used to drive the driving rod to rotate.

2. A nursing bed according to claim 1, characterized in that: The protective structure is provided on both the left and right sides of the bed board.

3. A nursing bed according to claim 1, characterized in that: The protective structure also includes a fourth guardrail, which is arranged on the side of the driving rod away from the second guardrail, a first protrusion is arranged on the top of the fourth guardrail, a second protrusion is arranged on the top of the second guardrail, a plastic bag is arranged between the second guardrail and the fourth guardrail, a first handle and a second handle are arranged on the top of the plastic bag, the first handle is hung on the first protrusion, and the second handle is hung on the second protrusion.

4. A nursing bed as claimed in claim 2, characterized in that: A plurality of second vertical rods are provided in the middle of the second guardrail, a plurality of fourth vertical rods are provided in the middle of the fourth guardrail, and the second vertical rods and the fourth vertical rods are arranged at intervals.

5. A nursing bed according to any one of claims 1 to 4, characterized in that: The power mechanism includes a power telescopic rod, a rack, and a gear. The gear is arranged at the bottom of the fourth rotating shaft. The fourth rotating shaft is fixedly connected to the driving rod. The fourth rotating shaft is rotatably connected to the first guardrail. The power telescopic rod is arranged at the bottom of the first guardrail. A rack is arranged at the output end of the power telescopic rod. The rack is arranged on the side of the gear away from the bed board, and the rack is meshed with the gear.

6. A nursing bed according to claim 1, characterized in that: It also includes an expansion mechanism, which includes a sliding seat, a wedge seat, a guide rod, a fixed seat, and a spring. The sliding seat is arranged at the bottom of the first guardrail, and the sliding seat is slidably connected to the bottom of the bed board along the left and right straight direction. The bottom of the sliding seat is provided with a wedge seat, and the wedge seat is provided with an inclined surface, which cooperates with the side of the bed frame. The wedge seat is provided with a guide rod on the side away from the first guardrail, and the guide rod is slidably connected to the fixed seat along the left and right straight direction. The fixed seat is arranged at the bottom of the bed board, and a spring is sleeved on the guide rod, one end of the spring abuts against the fixed seat, and the other end of the spring abuts against the wedge seat; When the height of the bed board is lowered, the side of the bed frame pushes the inclined surface of the wedge seat, so that the wedge seat overcomes the elastic force of the spring and slides toward the middle of the bed board. The wedge seat drives the sliding seat to slide toward the middle of the bed board, and the sliding seat drives the first guardrail close to the bed board.

7. A nursing bed as claimed in claim 6, characterized in that: The guide rod is provided with an anti-slip block at one end away from the wedge seat.

8. A nursing bed as claimed in claim 6, characterized in that: A slide rail is provided at the bottom of the bed board, and the slide rail extends in a left and right straight direction. A dovetail groove is provided on the top of the sliding seat, and the slide rail and the dovetail groove are slidably matched.

9. The nursing bed according to claim 1, characterized in that: The lifting mechanism includes a first support frame, a second support frame, and a height-adjustable telescopic rod. The first support frame and the second support frame are arranged side by side, the first support frame is arranged between the second support frame and the bedside frame, the upper end of the first support frame and the upper end of the second support frame are both rotatably connected to the bottom of the bed board, the lower end of the first support frame and the lower end of the second support frame are both rotatably connected to the bed base frame, the upper end of the height-adjustable telescopic rod is rotatably connected to the middle part of the first support frame, and the lower end of the height-adjustable telescopic rod is rotatably connected to the front part of the bed base frame.

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