An electric bed with adjustable posture

Abstract

A posture-adjustable electric bed comprises a supporting base bed frame; a first swing arm is arranged on the supporting base, and a front end of the first swing arm is hingedly connected to a front side of the supporting base; the bed frame comprises a frame main body and a backrest frame, the frame main body is slidingly connected to the front and rear of the supporting base, a first telescopic device is hingedly connected to a bottom of the frame main body, a rear side of the backrest frame is hingedly connected to a front side of the frame main body, and a rear end of the first swing arm is hingedly connected to the backrest frame; a first transmission member is fixedly connected to a bottom of the backrest frame, the first transmission member extends to a lower side of the backrest frame, and a bottom of the first transmission member is hingedly connected to the first telescopic device. Compared with the prior art, the electric bed rotates around the hinged position of the first swing arm as a fulcrum, the hinged position is located between the middle position and the rear side of the backrest frame, the first telescopic device enables large-angle rotation of the backrest frame, the telescopic length requirement of the first telescopic device is reduced, and thus the cost of the first telescopic device is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of electric bed technology, specifically relating to an electric bed with adjustable posture. Background Technology

[0002] Adjustable electric beds can meet various rest needs such as sitting and sleeping positions, improving the user experience. In existing technologies, the posture adjustment of electric beds is often achieved by driving the frame to slide via an electric push rod, thereby realizing frame rotation and posture adjustment. For example, patent announcement number CN222604182U discloses a telescopic multi-functional sofa bed, which includes a sofa frame, a slidingly connected translation frame, a backrest frame, and a leg frame. A first push rod motor drives the translation frame to move along a grooved guide rail, causing the backrest frame to rotate under the action of the backrest support rod, achieving various positions such as lying flat and reclining. To meet the requirements of large angle adjustments, a longer push rod stroke is required. The cost of a long-stroke push rod motor is relatively higher than that of a short-stroke push rod motor, leading to an increase in overall cost. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an electric bed with adjustable posture.

[0004] To achieve the above objectives, this utility model discloses an electric bed with adjustable posture, including a support base and a bed frame that is slidably connected to the support base. The support base is provided with a first swing arm, and the front end of the first swing arm is hinged to the front side of the support base. The bed frame includes a frame body and a backrest frame. The frame body is slidably connected to the support base. A first telescopic device is hinged to the bottom of the frame body. The rear side of the backrest frame is hinged to the front side of the frame body. The rear end of the first swing arm is hinged to the position between the middle position and the rear side of the backrest frame. A first transmission component is fixedly connected to the bottom of the backrest frame. The first transmission component extends along the lower side of the backrest frame, and the bottom of the first transmission component is hinged to a first telescopic device.

[0005] Preferably, the first transmission component is a plate-shaped structure and is arranged along the front-back direction, and the top surface of the first transmission component is flush with and welded to the backrest frame.

[0006] Preferably, the top surface of the first transmission component is L-shaped, including a horizontal surface and a vertical surface. The horizontal surface is flush with and welded to the bottom surface of the backrest frame, and the vertical surface is flush with and welded to the side of the backrest frame near the frame body.

[0007] Preferably, the length of the first transmission member gradually decreases towards the side away from the backrest frame along the front-rear direction.

[0008] Preferably, the first telescopic device is located directly below the frame body, and the bottom of the first transmission member extends obliquely to the bottom of the frame body.

[0009] Preferably, the bed frame further includes a leg frame, the front side of which is hinged to the rear side of the frame body; A second swing arm is provided on the rear side of the frame body, the front end of the second swing arm is hinged to the frame body, and the rear end of the second swing arm is hinged to the rear side of the leg frame; a second telescopic device is hinged to the bottom of the frame body. A second transmission component is fixedly connected to the bottom of the leg frame. The second transmission component extends downward toward the leg frame, and the bottom of the second transmission component is hinged to the second telescopic device.

[0010] Preferably, the leg frame includes a first leg frame and a second leg frame that are hinged to each other. The end of the first leg frame away from the second leg frame is hinged to the frame body, and the end of the second leg frame away from the first leg frame is hinged to the second swing arm. The second transmission member is installed at the bottom of the first leg frame.

[0011] Preferably, the frame body includes an I-shaped frame and two side connecting strips respectively connected to both sides of the I-shaped frame, the two side connecting strips extending along the front-back direction, and the backrest frame located between the two side connecting strips; Each of the side connecting bars is provided with rollers at both ends, and the rollers are slidably connected to the support base.

[0012] Preferably, when the backrest frame is in a horizontal state, the front end of the side connecting strip does not extend beyond the backrest frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: When the electric bed of this invention is in use, if it is necessary to rotate the backrest frame upwards, the first telescopic device drives the first transmission component, causing the front side of the backrest frame to rotate upwards around the hinge position between the first swing arm and the backrest frame, while the rear side of the backrest frame moves forward to pull the frame body forward, thus adjusting the frame posture. Similarly, when the backrest frame rotates downwards, the first telescopic device drives the first transmission component, causing the front side of the backrest frame to rotate downwards, while the rear side of the backrest frame pushes the frame body backwards.

[0014] The backrest frame rotates with its hinge point with the first swing arm as the fulcrum. At the same time, the hinge point is located between the middle position and the rear side of the backrest frame. The first telescopic device only needs to drive the first transmission component with a short stroke to achieve a relatively large angle rotation of the backrest frame, which reduces the telescopic length requirement of the first telescopic device and thus reduces the cost of the first telescopic device. Attached Figure Description

[0015] Figure 1 A three-dimensional structural diagram of an adjustable electric bed as an example; Figure 2 for Figure 1 A three-dimensional exploded view of the posture-adjustable electric bed; Figure 3 for Figure 1 Front view of the posture-adjustable electric bed; Figure 4 for Figure 1 A three-dimensional structural diagram of the backrest frame; Figure 5 for Figure 1 A three-dimensional structural diagram of an adjustable electric bed after it has been rotated and opened. Support base 100; rectangular frame 110; slide groove 111; support leg 120; first swing arm 130; Bed frame 200; Frame body 300; I-shaped frame 310; side connecting strip 320; connecting block 321; roller 322; reinforcing connecting strip 330; first telescopic device 340; second swing arm 350; second telescopic device 360; Backrest frame 400; First transmission component 410; Horizontal plane 411; Vertical plane 412; Leg frame 500; first leg frame 510; second leg frame 520; second transmission component 530; Detailed Implementation To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0016] An adjustable electric bed, see [link / reference] Figures 1-5 The system includes a support base 100 and a bed frame 200 that is slidably connected to the support base 100. The term "front and back" refers to the position of the bed frame when the user is lying on the bed; the side closer to the back is considered "front," and the side closer to the legs is considered "back." The frames mentioned in this embodiment are all constructed from connected square profiles.

[0017] The support base 100 includes a rectangular frame 110 and four legs 120 located at the four corners of the rectangular frame 110. A first swing arm 130 is provided on the front side of the rectangular frame 110. The front end of the first swing arm 130 is hinged to the front side of the rectangular frame 110, and the rear end of the first swing arm 130 is arranged rearward.

[0018] The bed frame 200 includes a frame body 300 and a backrest frame 400. The frame body 300 is slidably connected to the support base 100. Specifically, the inner walls of both ends of the two square profiles on the left and right sides of the rectangular frame 110 are provided with grooves 111. The frame body 300 includes an I-shaped frame 310 and two side connecting strips 320 respectively connected to both sides of the I-shaped frame 310. The two side connecting strips 320 extend in the front-back direction, and the backrest frame 400 is located between the two side connecting strips 320. When the backrest frame 400 is in a horizontal state, the top surfaces of the I-shaped frame 310, the side connecting strips 320, and the backrest frame 400 are coplanar. Each side connecting strip 320 has a vertically arranged connecting block 321 fixed at both ends, and a roller 322 is fixed at the bottom of each connecting block 321. Each roller 322 is slidably connected in the corresponding groove 111. To ensure the strength of the connecting blocks 321, the two connecting blocks 321 on the front side are fixed together by a reinforcing connecting strip 330, and the two connecting blocks 321 on the rear side are also fixed together by a reinforcing connecting strip 330. A first telescopic device 340 is provided below the frame body 300, which can be a push rod motor, telescopic cylinder, etc. The first telescopic device 340 and the first transmission component 410 are arranged in the same front-rear direction, and its rear end is hinged to the bottom of the frame body 300. The rear side of the backrest frame 400 is hinged to the front side of the frame body 300, and the rear end of the first swing arm 130 is hinged to the backrest frame 400.

[0019] The bottom of the backrest frame 400 is fixedly connected to a first transmission component 410. The first transmission component 410 extends along the lower side of the backrest frame 400, and the bottom of the first transmission component 410 is hinged to the front end (power output end) of the first telescopic device 340.

[0020] The electric bed is normally in a horizontal position, allowing the user to lie flat. When the user needs to adjust their posture (reclining or sitting), the first telescopic device 340 pushes the first transmission component 410, causing the backrest frame 400 to rotate around the hinge position between the first swing arm 130 and the backrest frame 400. Specifically, the front of the backrest frame 400 rotates upward, and the rear of the backrest frame 400 pulls the frame body 300 forward along the slide groove 111, thus adjusting the frame posture. During this process, the first swing arm 130 rotates upward. When the backrest frame 400 needs to rotate to a horizontal position, the first telescopic device 340 pulls back the first transmission component 410, the front of the backrest frame 400 rotates downward, and the rear of the backrest frame 400 pushes the frame body 300 backward.

[0021] The backrest frame 400 rotates with its hinge point with the first swing arm 130 as the fulcrum. At the same time, the hinge point is located between the middle position and the rear side of the backrest frame 400. The first telescopic device 340 only needs to drive the first transmission member 410 with a short stroke to realize the large-angle rotation of the backrest frame 400, which reduces the telescopic length requirement of the first telescopic device 340 and reduces costs.

[0022] The hinge position between the first swing arm 130 and the backrest frame 400 is preferably a short distance from the rear side to the front side of the backrest frame 400, which is one-quarter of the front-to-back length of the backrest frame 400.

[0023] In this embodiment, the first transmission component 410 is a plate-shaped structure arranged along the front-to-back direction. The thickness of the first transmission component 410 is set as needed to meet its mechanical properties. The top surface of the first transmission component 410 is flush with and welded to the backrest frame 400. The plate-shaped first transmission component 410 has high planar stiffness and bending strength, which can better transmit the pushing and pulling force of the first telescopic device 340 and significantly reduce deformation. The first transmission component 410 is welded to the backrest frame 400, ensuring a reliable connection.

[0024] The first transmission component 410 has an L-shaped top surface, comprising a horizontal surface 411 and a vertical surface 412. The horizontal surface 411 is flush with and welded to the bottom surface of the backrest frame 400, and the vertical surface 412 is flush with and welded to the side of the backrest frame 400 near the frame body 300. The L-shaped connection surface structure increases the welding area and improves the connection reliability. The horizontal surface 411 is connected to the bottom surface of the backrest frame 400, and the vertical surface 412 is connected to the side of the backrest frame 400 near the frame body 300, which is equivalent to being locked at the lower rear corner of the backrest frame 400. This provides a better transmission effect compared to welding only to the bottom surface of the backrest frame 400 and only driving the backrest frame 400 to rotate from the bottom surface.

[0025] In this embodiment, the length of the first transmission component 410 gradually decreases towards the side away from the backrest frame 400 in the front-back direction. This design not only ensures the structural strength of the first transmission component 410 but also reduces its weight, thus having the advantage of lightweight design. When the backrest frame 400 is in a horizontal state, the bottom of the first transmission component 410 extends inclinedly to the bottom of the frame body 300, which is equivalent to being located near the position where the first telescopic device 340 is not extended, making the overall structure more compact.

[0026] In this embodiment, the bed frame 200 further includes a leg frame 500, the front side of which is hinged to the rear side of the frame body 300. Specifically, the leg frame 500 includes a first leg frame 510 and a second leg frame 520 hinged to each other, with the side of the first leg frame 510 away from the second leg frame 520 hinged to the frame body 300. A second swing arm 350 is provided on the reinforcing connecting strip 330 on the rear side of the frame body 300, the front end of which is hinged to the reinforcing connecting strip 330, and the rear end of which is hinged to the side of the second leg frame 520 away from the first leg frame 510. A second telescopic device 360 ​​is provided at the bottom of the frame body 300, with the front end of which is hinged to the frame body 300. The bottom of the first leg frame 510 is fixedly connected to the second transmission member 530, which extends along the lower side of the leg frame 500. The bottom of the second transmission member 530 is hinged to the rear end of the second telescopic device 360.

[0027] In use, the second telescopic device 360 ​​pushes the second transmission member 530 backward, causing the first leg frame 510 to rotate upward around its hinge position with the frame body 300. During the upward rotation of the first leg frame 510, the second leg frame 520 is lifted, and the second leg frame 520 then lifts the second swing arm 350. A certain angle is formed between the first leg frame 510 and the second leg frame 520. The first leg frame 510 supports the thigh, and the second leg frame 520 supports the lower leg, thereby lifting the user's legs and improving the user experience. When the second telescopic device 360 ​​is pulled back, the first leg frame 510 and the second leg frame 520 rotate to a horizontal position.

[0028] There are two of each of the above-mentioned first swing arm 130 and second swing arm 350, which are respectively connected to the left and right sides of the corresponding frame. The structure of the second transmission component 530 is the same as that of the first transmission component 410, and will not be described in detail here.

[0029] In this embodiment, when the backrest frame 400 is in a horizontal state, the front end of the side connecting strip 320 does not exceed the backrest frame 400. When the frame body 300 moves forward to the foremost position, the front end of the side connecting strip 320 does not exceed the support base 100, so as to avoid the front end of the side connecting strip 320 extending out of the support base 100 after the frame body 300 moves forward, which would cause interference with external walls, etc.

[0030] The above description is only a preferred embodiment of the present utility model, and its structure is not limited to the shapes listed above. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electric bed with adjustable posture, characterized in that: Includes a support base and a bed frame that slides back and forth on the support base; The support base is provided with a first swing arm, and the front end of the first swing arm is hinged to the front side of the support base. The bed frame includes a frame body and a backrest frame. The frame body is slidably connected to the support base. A first telescopic device is hinged to the bottom of the frame body. The rear side of the backrest frame is hinged to the front side of the frame body. The rear end of the first swing arm is hinged to the position between the middle position and the rear side of the backrest frame. A first transmission component is fixedly connected to the bottom of the backrest frame. The first transmission component extends along the lower side of the backrest frame, and the bottom of the first transmission component is hinged to a first telescopic device.

2. The posture-adjustable electric bed according to claim 1, characterized in that: The first transmission component is a plate-shaped structure and is arranged along the front-back direction. The top surface of the first transmission component is flush with the backrest frame and welded and fixed.

3. The posture-adjustable electric bed according to claim 2, characterized in that: The top surface of the first transmission component is L-shaped, including a horizontal surface and a vertical surface. The horizontal surface is flush with the bottom surface of the backrest frame and welded to it. The vertical surface is flush with the side of the backrest frame near the frame body and welded to it.

4. The posture-adjustable electric bed according to claim 1, characterized in that: The length of the first transmission component gradually decreases towards the side away from the backrest frame along the front-rear direction.

5. The posture-adjustable electric bed according to claim 4, characterized in that: The first telescopic device is located directly below the frame body, and the bottom of the first transmission member extends at an angle to the bottom of the frame body.

6. The posture-adjustable electric bed according to claim 1, characterized in that: The bed frame also includes a leg frame, the front side of which is hinged to the rear side of the main frame body; A second swing arm is provided on the rear side of the frame body, the front end of the second swing arm is hinged to the frame body, and the rear end of the second swing arm is hinged to the rear side of the leg frame; a second telescopic device is hinged to the bottom of the frame body. A second transmission component is fixedly connected to the bottom of the leg frame. The second transmission component extends downward toward the leg frame, and the bottom of the second transmission component is hinged to the second telescopic device.

7. The posture-adjustable electric bed according to claim 6, characterized in that: The leg frame includes a first leg frame and a second leg frame that are hinged to each other. The side of the first leg frame away from the second leg frame is hinged to the frame body, and the side of the second leg frame away from the first leg frame is hinged to the second swing arm. The second transmission component is installed at the bottom of the first leg frame.

8. The posture-adjustable electric bed according to claim 1, characterized in that: The main frame includes an I-shaped frame and two side connecting strips respectively connected to both sides of the I-shaped frame. The two side connecting strips extend along the front-back direction, and the backrest frame is located between the two side connecting strips. Each of the side connecting bars is provided with rollers at both ends, and the rollers are slidably connected to the support base.

9. The posture-adjustable electric bed according to claim 8, characterized in that: When the backrest frame is in a horizontal position, the front end of the side connecting strip does not extend beyond the backrest frame.

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