Electric bed with sleep-aiding function and driving mechanism thereof

Abstract

The utility model belongs to electric bed technical field, concretely relates to a kind of electric bed and its driving mechanism with sleep-aiding function, and the electric bed includes: bedstead main body, it includes sequentially hinged foot plate, leg plate, hip plate and back plate;A pair of support is respectively hinged in the both ends of the bedstead main body;First driving mechanism is used to make the bedstead main body whole formation head high foot low or foot high head low inclination state;Second driving mechanism is used to drive the leg plate relative to the hip plate lifting;Third driving mechanism is used to drive the back plate relative to the hip plate lifting;Wherein, when the first driving mechanism makes the bedstead main body formation foot high head low inclination, the third driving mechanism drives the back plate relative to the hip plate lifting;When the first driving mechanism makes the bedstead main body formation head high foot low inclination, the second driving mechanism drives the leg plate relative to the hip plate lifting.

Description

Technical Field

[0001] This utility model belongs to the field of electric bed technology, and in particular relates to an electric bed with sleep aid function and its drive mechanism. Background Technology

[0002] In daily sleep and rehabilitation care, specific sleeping positions play an important role in improving specific health conditions and enhancing sleep quality. Some people need to elevate their head or feet to a specific angle for health reasons to achieve restful sleep. For example, patients with gastroesophageal reflux often need to elevate the head of the bed to use gravity to reduce nighttime acid reflux; those with poor venous return and edema in the lower limbs often need to elevate their feet to promote blood return and reduce edema.

[0003] To elevate the head or foot of the bed, users often stack pillows and blankets underneath their bodies. However, these soft supports are prone to deformation and shifting during sleep, causing the intended body position to fail and making it impossible to maintain effective support throughout the night. Some beds can be mechanically or electrically tilted along the head-to-toe direction. However, when the head or foot of the bed is raised separately, creating a tilted plane, the user's body will inevitably slide down the bed surface under gravity. This sliding can cause significant discomfort, even muscle tension, severely disrupting the continuity and stability of sleep.

[0004] Therefore, how to effectively elevate the body while preventing the user's body from sliding on the inclined bed is a technical problem that urgently needs to be solved by those skilled in the art.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content

[0006] This disclosure provides at least one electric bed and its drive mechanism.

[0007] In a first aspect, the present disclosure provides an electric bed, including: a bed frame body, which includes a footboard, a legboard, a buttocks board and a backboard that are sequentially hinged from the foot end to the head end; A pair of brackets are respectively hinged to both ends of the bed frame body along its length; The first drive mechanism is connected between the bed frame body and the support to drive the bed frame body and the support to pivot relative to each other, so that the bed frame body as a whole forms an inclined state with the head higher than the feet or the feet higher than the head. The second drive mechanism is connected between the leg plate and the bed frame body and is used to drive the leg plate to lift relative to the buttock plate. The third drive mechanism is connected between the back panel and the bed frame body, and is used to drive the back panel to lift relative to the buttocks panel; When the first drive mechanism drives the headboard to rotate and lift relative to the bed frame body, so that the bed frame body is tilted with the feet higher than the head, the third drive mechanism drives the back panel to lift relative to the buttocks panel. When the first drive mechanism drives the support at the end of the bed to rotate and lift relative to the main body of the bed frame, so that the main body of the bed frame is tilted with the head higher than the feet, the second drive mechanism drives the leg plate to lift relative to the buttock plate.

[0008] In one optional embodiment, the support includes two pairs of support rods, one end of which is hinged to a fixed frame of the bed frame body, and the other end is provided with a roller; and, The support rods on the same side are connected by crossbars.

[0009] In one optional embodiment, the first drive mechanism includes a pair of first electric push rods and a pair of first motors, the first motors being respectively hinged to the crossbeams of the bed frame body, and the output ends of the first electric push rods being respectively hinged to the crossbeams at the foot end and head end of the bed. When the electric push rods at both the foot and head of the bed are extended to their maximum length, the main body of the bed frame is in a horizontal state. When the electric push rod at the foot of the bed retracts, it drives the bracket at the foot of the bed to rotate and lift relative to the main body of the bed frame, so that the main body of the bed frame is tilted with the head higher than the feet. When the electric push rod at the head of the bed retracts, it drives the support at the head of the bed to rotate and lift relative to the main body of the bed frame, so that the main body of the bed frame is tilted with the feet higher than the head.

[0010] In one alternative embodiment, the second drive mechanism includes a second electric push rod and a second motor, the second motor being hinged below the hip plate, and the output end of the second electric push rod being hinged to a leg plate support rod on the lower end face of the leg plate. When the second electric push rod extends, it drives the leg plate to rise relative to the buttock plate.

[0011] In one alternative implementation, A pair of foot support rods are provided between the fixed frame of the main body of the bed frame and the footboard. One end of each foot support rod is hinged to the fixed frame, and the other end is hinged to the lower surface of the footboard near the foot end of the bed. When the leg plate is raised relative to the hip plate, the leg plate drives the foot plate to lift synchronously. Under the constraint of the foot plate support rod, the foot plate remains parallel to the bottom surface of the fixed frame during the lifting process and when it is raised to the highest position.

[0012] In one optional embodiment, a rotating shaft is provided on the back side of the back panel, and the two ends of the rotating shaft are rotatably connected to both sides of the bed frame body; and, The third drive mechanism includes a third motor and a third electric push rod. The third motor is hinged below the buttock plate, and the output end of the third electric push rod is hinged to the rotating shaft to drive the rotating shaft to rotate. The rotating shaft is provided with at least one back plate support roller. When the rotating shaft rotates, the back plate support roller contacts the back side of the back plate and rolls relative to it, thereby converting the rotational motion of the rotating shaft into the lifting motion of the back plate about its hinge axis with the buttock plate.

[0013] Secondly, embodiments of this disclosure also provide a drive mechanism for an electric bed, comprising: The first drive mechanism is used to drive one of the supports at both ends of the bed frame body to lift, so that the bed frame body as a whole forms an inclination with the head higher than the feet or the feet higher than the head. The second drive mechanism is used to drive the leg plate of the bed frame body to lift relative to the buttock plate; The third drive mechanism is used to drive the back panel of the bed frame body to rise relative to the buttocks panel; The first drive device is linked with the second and third drive devices so that when the bed is tilted to the head-up and feet-down direction, the legboard is raised and when the bed is tilted to the feet-up and head-down direction, the backboard is raised.

[0014] In one optional embodiment, the first drive mechanism includes a pair of first electric push rods and a pair of first motors, the first motors being respectively hinged to the crossbeams of the bed frame body, and the outputs of the first electric push rods being respectively hinged to the supports at the foot end and head end of the bed. When the electric push rod at the foot of the bed retracts, it drives the bracket at the foot of the bed to rotate and lift relative to the main body of the bed frame, so that the main body of the bed frame is tilted with the head higher than the feet. When the electric push rod at the head of the bed retracts, it drives the support at the head of the bed to rotate and lift relative to the main body of the bed frame, so that the main body of the bed frame is tilted with the feet higher than the head.

[0015] In one alternative embodiment, the second drive mechanism includes a second electric push rod and a second motor, the second motor being hinged below the hip plate, and the output end of the second electric push rod being hinged to a leg plate support rod on the lower end face of the leg plate. When the second electric push rod extends, it drives the leg plate to rise relative to the buttock plate.

[0016] In one alternative embodiment, the third drive mechanism includes a third motor and a third electric push rod, the third motor being hinged below the buttock plate, and the output end of the third electric push rod being hinged to a rotating shaft below the back plate to drive the rotating shaft to rotate. The rotating shaft is provided with at least one back plate support roller. When the rotating shaft rotates, the back plate support roller contacts the back side of the back plate and rolls relative to it, thereby converting the rotational motion of the rotating shaft into the lifting motion of the back plate about its hinge axis with the buttock plate.

[0017] The beneficial effect of this utility model is that when the first drive mechanism drives the support to lift and tilts the main body of the bed frame, the second and third drive mechanisms lift the leg board or back board to form a local blocking platform, thereby preventing the user from sliding along the tilted bed surface and ensuring that the required head-high-feet-low or feet-high-head-low body position can be stably maintained.

[0018] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and drawings.

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 An internal structural diagram of an electric bed provided in an embodiment of this disclosure; Figure 2 A perspective view of an electric bed with its headboard high and legs low, provided as an embodiment of this disclosure; Figure 3An embodiment of this disclosure provides a three-dimensional electric bed with legs raised and head lowered. Figure 1 ; Figure 4 An embodiment of this disclosure provides a three-dimensional electric bed with legs raised and head lowered. Figure 2 .

[0022] In the picture: 100. Bed frame body; 110. Bed legs; 120. Bed head; 130. Footboard; 131. Footboard support rod; 140. Legboard; 141. Legboard support rod; 150. Hipboard; 160. Backboard; 161. Rotating shaft; 1611. Backboard support roller; 170. Crossbeam; 180. Fixed frame; 200. Bracket; 210. Support rod; 211. Roller; 220. Crossbar; 300. First drive mechanism; 310. First motor; 320. First electric push rod; 400. Second drive mechanism; 410. Second motor; 420. Second electric push rod; 500. Third drive mechanism; 510. Third motor; 520. Third electric push rod. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0025] In this document, when an element or layer is referred to as “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements should be interpreted in a similar manner (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items.

[0026] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0027] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0028] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0029] Research has revealed drawbacks in existing technologies: to elevate the head or foot of the bed, users typically stack pillows and blankets underneath their bodies. These soft supports are highly susceptible to deformation and displacement during sleep, causing the pre-set body position to fail and making it impossible to maintain effective support throughout the night. Some beds can tilt the entire bed frame along the head-to-toe direction mechanically or electrically. However, when the head or foot of the bed is raised separately, creating a tilted plane, the user's body will inevitably slide down the bed surface under gravity. This sliding can cause significant discomfort and even muscle tension, severely disrupting the continuity and stability of sleep.

[0030] Based on the above research, this disclosure provides an electric bed. By setting a first drive mechanism that can independently drive the entire bed to tilt, and a second and third drive mechanisms that can respectively drive the legboard and backrest to lift, the legboard is automatically lifted when the bed frame is tilted towards a head-up, and the backrest is automatically lifted when the bed frame is tilted towards a foot-up, thereby effectively preventing the human body from slipping and achieving stable, comfortable and lasting support for specific body positions.

[0031] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventor's contribution to this disclosure.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0034] See Figure 1 This disclosure provides an electric bed, including: a bed frame body 100, a pair of supports 200, a first drive mechanism 300, a second drive mechanism 400, and a third drive mechanism 500. The bed frame body 100 constitutes the core load-bearing frame of the bed. It includes a footboard 130, a legboard 140, a hipboard 150, and a backboard 160, which are sequentially arranged from the foot end 110 to the head end 120. These four boards are connected sequentially by hinges (for example, the footboard 130 is hinged to the legboard 140, the legboard 140 is hinged to the hipboard 150, and the hipboard 150 is hinged to the backboard 160), allowing relative rotation between them.

[0035] See also Figure 1The bed frame has rotatably mounted brackets 200 at its foot end 110 and head end 120. These brackets 200 support the entire bed frame body 100 and can pivot relative to it. A first drive mechanism 300 is connected between the bed frame body 100 and the pair of brackets 200. When the first drive mechanism 300 operates, it drives a relative pivoting motion between the bed frame body 100 and the brackets 200, thereby changing the overall tilt angle of the bed frame body 100 to achieve a head-high or foot-low tilt. A second drive mechanism 400 is connected between the leg panel 140 and the bed frame body 100. Its function is to drive the leg panel 140 to rotate around its hinge axis with the hip panel 150, thereby lifting the leg panel 140 relative to the fixed hip panel 150. A third drive mechanism 500 is connected between the backrest panel 160 and the bed frame body 100. Its function is to drive the back plate 160 to rotate about its hinge axis with the hip plate 150, thereby raising the back plate 160 relative to the hip plate 150.

[0036] See Figure 1 In some embodiments, the support frame 200 includes two pairs of support rods 210. Specifically, a pair of support rods 210 is provided below the foot end 110 and head end 120 of the bed frame body 100 along its length. The upper end of each support rod 210 (i.e., the end closest to the bed frame body 100) is hinged to the fixed frame of the bed frame body 100, allowing the support rod 210 to rotate within a certain angle range around the hinge point. The lower end of each support rod 210 (i.e., the end away from the bed frame body 100 and in contact with the ground) is provided with a roller 211. The roller 211 facilitates the movement of the entire bed and serves as a rolling contact point with the support surface when the support frame 200 rotates. The two support rods 210 on the same side are rigidly connected by a crossbar 220. That is, the front and rear support rods 210 located on the same side of the bed frame body 100 are connected by a crossbar 220 at their middle positions, thereby connecting the two support rods 210 on the same side into a stable support frame. This crossbar 220 not only enhances the overall structural strength and stability of the single-sided support 200, but also provides a clear and reliable connection point for the first drive mechanism 300 to drive the entire support 200 on that side to rotate, lift, or lower.

[0037] See Figure 1In some embodiments, the first drive mechanism 300 includes a pair of first electric actuators 320 and a pair of first motors 310 that drive the first electric actuators 320. The two first motors 310 are respectively mounted on the crossbeam 170 in the middle of the bed frame body 100 via hinged joints. The output end of each first electric actuator 320 is hinged to the middle position of the crossbar 220 of the corresponding side support 200 via a hinged shaft connector. In the initial state, both first electric actuators 320 at the foot and head of the bed 120 are extended to their maximum stroke, keeping the supports 200 on both sides in an extended state, thereby supporting the bed frame body 100 in a horizontal and stable state.

[0038] See Figure 1 and Figure 2 In some embodiments, when a head-high-feet-low tilted position is required, the first drive motor at the foot of the bed drives the first electric push rod 320 to retract. This push rod, by pulling the crossbar 220 at the foot of the bed that is hinged to it, drives the entire support 200 at the foot of the bed to rotate upward and retract around its hinge point with the bed frame body 100 (e.g., Figure 2 (As shown by arrow F2 in the middle). This action causes the foot end of the bed frame body 100 to be relatively lowered, while the head end 120 remains relatively high due to the extended support of the push rod. This results in the bed frame body 100 as a whole being tilted with the head higher than the feet.

[0039] See Figure 1 and Figure 3 In some embodiments, when a tilted position with the feet higher than the head is required, the first drive motor of the headboard end 120 drives the first electric push rod 320 to retract. This push rod pulls the crossbar 220 of the headboard end 120, causing the headboard end 120 support 200 to rotate and retract (e.g., ...). Figure 3 As shown by arrow F1 in the middle, the head of the bed is lowered by 120 degrees, while the foot of the bed remains supported in a high position, thus forming an inclination with the feet higher than the head.

[0040] See Figure 1 and Figure 2In some embodiments, the second drive mechanism 400 includes a second motor 410 and a second electric actuator 420 driven by it. Specifically, the second motor 410 is mounted via a hinged seat and hinged below the hip plate 150. This hinged design allows the housing of the second motor 410 to swing slightly around its hinge axis to accommodate the angular changes of the second electric actuator 420 during extension and retraction, avoiding structural interference. The output end of the second electric actuator 420 is hinged to the leg support rod 141 below the leg plate 140 via a hinge axis. The leg support rod 141 is a rigid rod with both ends fixedly connected to the lower end face of the leg plate 140. Therefore, the movement of the leg support rod 141 directly drives the movement of the leg plate 140. When the bed frame body 100 is in an inclined state with the head higher than the feet, the second motor 410 drives the second electric actuator 420 to extend. As the piston rod of the second electric actuator 420 extends outward, it applies an upward thrust to the leg support rod 141. Since the leg plate support rod 141 is fixedly connected to the leg plate 140, and the rear end of the leg plate 140 is connected to the hip plate 150 by a hinge, this thrust will force the leg plate 140 to rotate upward about the hinge axis with the hip plate 150, thereby realizing the lifting of the leg plate 140 relative to the fixed hip plate 150.

[0041] See Figure 1 and Figure 2 In some embodiments, a pair of foot support rods 131 are provided between the fixed frame 180 of the bed frame body 100 and the footboard 130. Specifically, each foot support rod 131 is a rigid rod. Its first end is hinged to the fixed frame 180 by a pin, and this hinge point provides a fulcrum for the foot support rod 131 to rotate around it. Its second end is hinged to the lower surface of the footboard 130 near the foot end of the bed by a pin, and this hinge point allows relative rotation between the footboard 130 and the foot support rod 131. The end of the footboard 130 near the head of the bed is hinged to the corresponding end of the legboard 140, allowing them to rotate relative to each other at the connection point. When the second drive mechanism 400 drives the legboard 140 to rise about the hinge axis with the hipboard 150, the legboard 140 pushes and pulls the footboard 130 through the hinge point between them, thereby causing the footboard 130 to move upward synchronously. During this lifting process, the footplate support rod 131 acts as a geometric constraint. Since its two ends are hinged to the fixed frame and the movable footplate 130 respectively, its length is fixed. Therefore, when the legplate 140 is lifted, its movement trajectory is strictly limited under the constraint of the footplate support rod 131. Regardless of the intermediate or highest position of the legplate 140, the surface of the footplate 130, under the constraint of the footplate support rod 131, always remains parallel to the bottom surface of the fixed frame 180. This ensures that the user's feet and ankles always receive horizontal and natural support during the lifting of the legplate 140, avoiding discomfort caused by foot drop or excessive dorsiflexion, and significantly improving comfort.

[0042] See Figure 1 and Figure 4 In some embodiments, a rotating shaft 161 is provided on the back side of the backrest plate 160. The rotating shaft 161 extends along the width of the bed frame, and its two ends are rotatably connected to the fixed frames 180 on both sides of the bed frame body 100 via bearings, allowing the rotating shaft 161 to rotate freely about its own axis. The third drive mechanism 500 includes a third motor 510 and a third electric push rod 520 driven by it. The third motor 510 is mounted via a hinged seat and hinged below the hip plate 150. The output end of the third electric push rod 520 is hinged to the shaft body of the rotating shaft 161 via a hinged joint. At least one backrest support roller 1611 is fixedly mounted on the rotating shaft 161. Preferably, there are multiple backrest support rollers 1611, spaced apart along the axial direction of the rotating shaft 161. The outer peripheral surface of the backrest support roller 1611 is configured to contact the back side of the backrest plate 160. When the back panel 160 needs to be raised, the third motor 510 is activated, driving the third electric push rod 520 to extend. This pushes the rotating shaft 161 hinged to it, forcing the rotating shaft 161 to rotate around its two end support points. As the rotating shaft 161 rotates, the back panel support roller 1611 fixed to it also rotates synchronously. Since the outer circumferential surface of the back panel support roller 1611 always remains in contact with the back side of the back panel 160, when the back panel support roller 1611 rotates, it does not slide friction, but rather "rolls forward" along the curved surface of the back side of the back panel 160 in a rolling contact manner. This rolling action generates a continuous upward thrust with a gradually changing direction, converting the rotational motion of the rotating shaft 161 into an upward lifting motion of the back panel 160 around its hinge axis with the hip panel 150. During this process, the hinged design of the third motor 510 allows it to swing as a whole to adapt to the angular changes caused by the movement of the push rod and the rotating shaft 161.

[0043] See Figure 1 Some embodiments also provide a drive mechanism for an electric bed, including: a first drive mechanism 300 for selectively lifting one of the supports 200 at both ends of the bed frame body 100, so that the bed frame body 100 as a whole forms an inclination with the head higher than the feet or the feet higher than the head; a second drive mechanism 400 for lifting the leg plate 140 of the bed frame body 100 relative to the buttock plate 150; and a third drive mechanism 500 for lifting the back plate 160 of the bed frame body 100 relative to the buttock plate 150; wherein the first drive device is linked with the second drive device and the third drive device, so that when the bed body is tilted to the head higher than the feet, the leg plate 140 is triggered to lift, and when the bed body is tilted to the feet higher than the head, the back plate 160 is triggered to lift.

[0044] See also Figure 1In some embodiments, the first drive mechanism 300 includes a pair of first electric push rods 320 and a pair of first motors 310. The first motors 310 are respectively hinged to the crossbeams 170 of the bed frame body 100. The outputs of the first electric push rods 320 are respectively hinged to the supports 200 of the foot end and the head end 120 of the bed. When the electric push rod at the foot end retracts, it drives the support 200 at the foot end to rotate and lift relative to the bed frame body 100, so that the bed frame body 100 forms an inclined state with the head higher than the feet. When the electric push rod at the head end 120 retracts, it drives the support 200 at the head end 120 to rotate and lift relative to the bed frame body 100, so that the bed frame body 100 forms an inclined state with the feet higher than the head.

[0045] See also Figure 1 In some embodiments, the second drive mechanism 400 includes a second electric push rod 420 and a second motor 410. The second motor 410 is hinged below the hip plate 150, and the output end of the second electric push rod 420 is hinged to the leg plate support rod 141 on the lower end face of the leg plate 140. When the second electric push rod 420 extends, it drives the leg plate 140 to rise relative to the hip plate 150.

[0046] See also Figure 1 In some embodiments, the third drive mechanism 500 includes a third motor 510 and a third electric push rod 520. The third motor 510 is hinged below the buttock plate 150, and the output end of the third electric push rod 520 is hinged to a rotating shaft 161 below the back plate 160 to drive the rotating shaft 161 to rotate. The rotating shaft 161 is provided with at least one back plate support roller 1611. When the rotating shaft 161 rotates, the back plate support roller 1611 contacts the back side of the back plate 160 and rolls relative to it, thereby converting the rotational motion of the rotating shaft 161 into the lifting motion of the back plate 160 about its hinge axis with the buttock plate 150.

[0047] In summary, when the first drive mechanism 300 drives the support 200 to lift, causing the bed frame body 100 to tilt, the second and third drive mechanisms 500 lift the leg board 140 or the back board 160 to form a local blocking platform, thereby preventing the user from sliding along the tilted bed surface and ensuring that the required head-high-feet-low or feet-high-head-low body position can be stably maintained.

[0048] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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.

[0049] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are 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, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.

[0050] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0051] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.

[0052] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An electric bed, characterized in that, include: The main body of the bed frame (100) includes a footboard (130), a legboard (140), a buttocks board (150) and a backboard (160) that are hinged sequentially from the foot end (110) to the head end (120). A pair of brackets (200) are respectively hinged to both ends of the bed frame body (100) along the length direction; The first drive mechanism (300) is connected between the bed frame body (100) and the support (200) to drive the bed frame body (100) and the support (200) to pivot relative to each other, so that the bed frame body (100) is tilted in a head-high or foot-low or foot-high-head-low state. The second drive mechanism (400) is connected between the leg plate (140) and the bed frame body (100) and is used to drive the leg plate (140) to lift relative to the buttock plate (150); The third drive mechanism (500) is connected between the back panel (160) and the bed frame body (100) and is used to drive the back panel (160) to lift relative to the buttocks panel (150); When the first drive mechanism (300) drives the support (200) of the headboard end (120) to rotate and lift relative to the bed frame body (100) so that the bed frame body (100) forms an inclination with the feet higher than the head, the third drive mechanism (500) drives the back plate (160) to lift relative to the buttocks plate (150). When the first drive mechanism (300) drives the support (200) at the end of the bed to rotate and lift relative to the bed frame body (100) so that the bed frame body (100) forms an inclination with the head higher than the feet, the second drive mechanism (400) drives the leg plate (140) to lift relative to the buttock plate (150).

2. The electric bed as described in claim 1, characterized in that, The bracket (200) includes two pairs of support rods (210), one end of which is hinged to the fixed frame (180) of the bed frame body (100), and the other end is provided with a roller (211); and, The support rods (210) on the same side are connected by a crossbar (220).

3. The electric bed as described in claim 2, characterized in that, The first drive mechanism (300) includes a pair of first electric push rods (320) and a pair of first motors (310). The first motors (310) are respectively hinged to the crossbeams (170) of the bed frame body (100). The output ends of the first electric push rods (320) are respectively hinged to the crossbars (220) of the end of the bed and the head of the bed (120). When the electric push rods at the foot end and head end (120) of the bed are extended to their maximum length, the main body of the bed frame (100) is in a horizontal state. When the electric push rod at the foot of the bed retracts, it drives the bracket (200) at the foot of the bed to rotate and lift relative to the bed frame body (100), so that the bed frame body (100) forms an inclined state with the head higher than the feet. When the electric push rod of the headboard end (120) retracts, it drives the support (200) of the headboard end (120) to rotate and lift relative to the bed frame body (100), so that the bed frame body (100) forms an inclined state with the feet higher than the head.

4. The electric bed as described in claim 1, characterized in that, The second drive mechanism (400) includes a second electric push rod (420) and a second motor (410). The second motor (410) is hinged below the hip plate (150), and the output end of the second electric push rod (420) is hinged to the leg plate support rod (141) on the lower end face of the leg plate (140). When the second electric push rod (420) extends, it drives the leg plate (140) to lift relative to the hip plate (150).

5. The electric bed as described in claim 1, characterized in that, A pair of foot support rods (131) are provided between the fixed frame (180) and the footboard (130) of the bed frame body (100). One end of each foot support rod (131) is hinged to the fixed frame (180), and the other end is hinged to the lower surface of the footboard (130) near the foot end of the bed. When the leg plate (140) is raised relative to the hip plate (150), the leg plate (140) drives the foot plate (130) to lift synchronously. Under the constraint of the foot plate support rod (131), the foot plate (130) remains parallel to the bottom surface of the fixed frame (180) during the lifting process and when it is raised to the highest position.

6. The electric bed as described in claim 1, characterized in that, A rotating shaft (161) is provided on the back side of the back panel (160), and the two ends of the rotating shaft (161) are rotatably connected to both sides of the bed frame body (100); and, The third drive mechanism (500) includes a third motor (510) and a third electric push rod (520). The third motor (510) is hinged below the hip plate (150), and the output end of the third electric push rod (520) is hinged to the rotating shaft (161) to drive the rotating shaft (161) to rotate. The rotating shaft (161) is provided with at least one back plate support roller (1611). When the rotating shaft (161) rotates, the back plate support roller (1611) contacts the back side of the back plate (160) and rolls relative to it, thereby converting the rotational motion of the rotating shaft (161) into the lifting motion of the back plate (160) about its hinge axis with the hip plate (150).

7. A drive mechanism for an electric bed, characterized in that, include: The first drive mechanism (300) is used to drive the supports (200) at both ends of the bed frame body (100) to lift one of them, so that the bed frame body (100) as a whole forms an inclination with the head high and the feet low or the feet high and the head low. A second drive mechanism (400) is used to drive the leg plate (140) of the bed frame body (100) to lift relative to the hip plate (150); A third drive mechanism (500) is used to drive the back panel (160) of the bed frame body (100) to rise relative to the hip panel (150); The first drive mechanism is linked with the second drive mechanism and the third drive mechanism, so that when the bed is tilted to the head-up and feet-down direction, the leg plate (140) is triggered to lift, and when the bed is tilted to the feet-up and head-down direction, the back plate (160) is triggered to lift.

8. The drive mechanism for an electric bed as described in claim 7, characterized in that, The first drive mechanism (300) includes a pair of first electric push rods (320) and a pair of first motors (310). The first motors (310) are respectively hinged to the crossbeams (170) of the bed frame body (100). The output of the first electric push rods (320) is respectively hinged to the brackets (200) of the end of the bed and the end of the bed (120). When the electric push rod at the foot of the bed retracts, it drives the bracket (200) at the foot of the bed to rotate and lift relative to the bed frame body (100), so that the bed frame body (100) forms an inclined state with the head higher than the feet. When the electric push rod of the headboard end (120) retracts, it drives the support (200) of the headboard end (120) to rotate and lift relative to the bed frame body (100), so that the bed frame body (100) forms an inclined state with the feet higher than the head.

9. The drive mechanism for an electric bed as described in claim 7, characterized in that, The second drive mechanism (400) includes a second electric push rod (420) and a second motor (410). The second motor (410) is hinged below the hip plate (150), and the output end of the second electric push rod (420) is hinged to the leg plate support rod (141) on the lower end face of the leg plate (140). When the second electric push rod (420) extends, it drives the leg plate (140) to lift relative to the hip plate (150).

10. The drive mechanism for an electric bed as described in claim 7, characterized in that, The third drive mechanism (500) includes a third motor (510) and a third electric push rod (520). The third motor (510) is hinged below the hip plate (150), and the output end of the third electric push rod (520) is hinged to a rotating shaft (161) below the back plate (160) to drive the rotating shaft (161) to rotate. The rotating shaft (161) is provided with at least one back plate support roller (1611). When the rotating shaft (161) rotates, the back plate support roller (1611) contacts the back side of the back plate (160) and rolls relative to it, thereby converting the rotational motion of the rotating shaft (161) into the lifting motion of the back plate (160) about its hinge axis with the hip plate (150).

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