Electric bed

Abstract

The utility model provides an electric bed. An inner bed frame is supported by two lifting mechanisms. The lifting mechanism combines an upper frame and a lower frame together by using a shear-type structure body. The upper frame is connected with the inner bed frame. The shear-type structural body converts electric energy into a cross motion to change the height from the upper frame to the lower frame. Therefore, the height of the inner bed frame can be adjusted, and a user is helped to sit and lie on the electric bed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a bed field especially to an electric bed with the electric control function of height rising or falling. BACKGROUND

[0002] The general bed structure is simple and does not have the height lifting function. One user can sit on the bed and back against a soft cushion to obtain the supporting effect. If the behavior is inconvenient, the user needs the help of others to sit or lie on the bed to rest.

[0003] The Chinese patent CN2753226Y discloses a lifting bed. Two support lugs are installed on a bed frame. An upper bed frame is connected to the two support lugs and swings relative to the bed frame. A lifting support is arranged on the bed frame. The lifting support is installed with two lifting screws. The lifting screws are engaged with a driven wheel. The driven wheel is engaged with a driving wheel to transmit power to each other. A motor drives the driving wheel to move the lifting screws upward, so that the upper bed frame is lifted to the appropriate angle relative to the bed frame. The motor stops working, and the upper bed frame remains in the inclined state to support the back of the user.

[0004] Although the aforementioned Chinese patent case overcomes the problem of the user leaning against the lifting bed in a sitting position. However, the lifting bed still maintains a height from the ground, which makes it difficult for the elderly, pregnant women or children to get on the bed. Moreover, the user is prone to falling when getting off the bed.

[0005] Therefore, how to improve the lifting structure of the bed to help the elderly, pregnant women or children to easily sit or lie down has become a problem to be solved by the utility model. CONTENT OF THE UTILITY MODEL

[0006] Therefore, the main purpose of the utility model is to provide a new electric bed. The electric bed adopts a scissor-type mechanical structure to convert electric energy into cross movement to control the lifting or lowering of the bed frame height, so as to achieve the effect of easy sitting or lying down and solve the long-standing problems in the prior art.

[0007] In order to achieve the above purpose, the utility model provides an electric bed to support an inner bed frame by two lifting mechanisms. The lifting mechanism comprises:

[0008] A scissor structure, comprising: an inner frame, each end of which has a fixed shaft and a movable shaft; an outer frame, which is connected to the inner frame and can crosswise move, each end of the outer frame has a fixed shaft and a movable shaft; an extension rod, one end of which is lengthened or shortened, and the other end is pivoted to one of the fixed shafts of the inner frame; a motor, which is connected to the extension rod, and can change the total length of the extension rod when powered; a pivot, which is arranged at a fulcrum of the crosswise movement of the inner frame and the outer frame, and is connected to the extension end of the extension rod;

[0009] an upper frame, which is connected to the inner bed frame, and is pivoted to the fixed shaft of the inner frame, and the movable shaft of the outer frame reciprocates to support the upper frame; and

[0010] a lower frame, which is pivoted to the fixed shaft of the outer frame, and the movable shaft of the inner frame reciprocates to resist the lower frame.

[0011] Preferably, further comprising: a plurality of connecting devices, which are arranged at two sides of the inner bed frame respectively, and are connected to corresponding upper frames.

[0012] Preferably, the upper frame is fixed with two tracks, which are parallel, and receive two pulleys of the outer frame, and the two pulleys are located at two ends of the movable shaft.

[0013] Preferably, the lower frame is fixed with two tracks, which are parallel, and receive two pulleys of the inner frame, and the two pulleys are located at two ends of the movable shaft.

[0014] Preferably, a base frame connecting unit is used to combine two lower frames of two lifting mechanisms.

[0015] Preferably, an outer bed frame is used to connect the outer part of the inner bed frame.

[0016] The advantages of the utility model are: using a scissor mechanical structure, converting electric energy into crosswise movement, controlling the rising or falling of the bed frame height, and achieving the effect of sitting or lying easily.

[0017] In order to make the purpose, characteristics and advantages of the utility model simple and easy to understand, one or more preferred embodiments are listed, and the following is described in detail in cooperation with the drawings. DRAWINGS

[0018] Figure 1 is a drawing of a preferred embodiment of the utility model electric bed.

[0019] Figure 2 is a drawing of another angle of the electric bed.

[0020] Figure 3 is a drawing of the height falling state of the inner bed frame.

[0021] Figure 4 is in a height-raised state of the inner bed frame.

[0022] Figure 5 is a component of the lifting mechanism.

[0023] BRIEF DESCRIPTION OF DRAWINGS: electric bed 10; headboard 11; footboard 12; outer bed frame 13; backboard frame 14; middle board frame 15; thigh board frame 16; calf board frame 17; leg frame 18; inner bed frame 20; linking device 21; bottom frame connecting unit 22; lifting mechanism 23; leg column 24; roller 25; scissor structure 30; inner frame 31; fixed shaft 32, 36; movable shaft 33, 37; pulley 34, 38; outer frame 35; fulcrum 39; telescopic rod 40; motor 41; pivot 42; high-order seat 43; low-order seat 44; fastener 45, 46; upper frame 50; hole 51, 56; track 52, 57; lower frame 55. DETAILED DESCRIPTION

[0024] Next, embodiments of the present application will be described in conjunction with the drawings. In the drawings, the same or similar components are denoted by the same reference numerals. It is predictable that the described embodiments are only examples of part of the present application, not all embodiments. Other embodiments can be derived based on the described examples, or the structure can be changed or varied as needed, and all fall within the scope of the present application.

[0025] In the following description, directional phrases such as "upper", "lower", "left", "right", "front", "back", "inner", "outer", and "lateral" are with reference to the orientation of the drawings. The use of directional phrases is for better and clearer description and understanding of the present application, and does not imply that the device or component must have a specific orientation, structure, and operation, and therefore cannot be understood as a limitation on the technical content of the present application.

[0026] Unless specifically and explicitly specified and limited, in the following description, "mounting", "connection", "connection" or "provided on" should be broadly understood, such as fixed connection, detachable connection, integral connection, mechanical connection, direct connection, indirect connection or connection between two components. Those skilled in the art can understand the specific meaning of the above terms in each embodiment with ordinary knowledge or experience.

[0027] Unless otherwise specified, in the following description, "a plurality of" means two or more.

[0028] As Figure 1As shown, this utility model provides a preferred embodiment of an electric bed 10. In this embodiment, the electric bed 10 has an outer bed frame 13. One end of the outer bed frame 13 is fixed to a headboard 11 and is detachable, and the other end is fixed to a tailboard 12 and is detachable. From the headboard 11 to the tailboard 12, a backrest frame 14, a middle board frame 15, a thigh board frame 16, and a lower leg board frame 17 are laid on the electric bed 10.

[0029] like Figure 2 As shown, the backrest frame 14 is combined with a backrest panel (not shown), which is raised to an angle or placed in a flat position on the electric bed 10 along with the backrest frame 14. The middle board frame 15 is combined with a middle board (not shown), which is normally fixed to the electric bed 10. The thigh board frame 16 is combined with a thigh board (not shown), which is connected to both sides of the middle board along with the backrest. The thigh board is raised to a suitable angle or placed in a flat position on the electric bed 10 along with the thigh board frame 16. The lower leg board frame 17 is combined with a lower leg board (not shown), which is connected to the thigh board to create an interactive relationship. A leg bracket 18 secures the lower leg board frame 17.

[0030] The outer bed frame 13 is integrated with the exterior of an inner bed frame 20. The inner bed frame 20 operates synchronously with the outer bed frame 13, changing the height of the electric bed 10 to the ground.

[0031] like Figure 3 As can be easily understood, the inner bed frame 20 is a rectangular frame with four connecting devices 21 installed on the inner sides of its two long sides. One lifting mechanism 23 connects two of the connecting devices 21 facing each other, and another lifting mechanism 23 connects to the other connecting devices 21 facing each other. Therefore, the two lifting mechanisms 23 support the two short sides of the inner bed frame 20.

[0032] In this embodiment, the two lifting mechanisms 23 have identical structures but opposite directions. In some embodiments, the two lifting mechanisms 23 are in the same orientation.

[0033] Each lifting mechanism 23 is connected to an upper frame 50 and a lower frame 55 by a scissor structure 30. The upper frame 50 is connected to the connecting device 21. The lower frame 55 is also a rectangular frame, with a foot post 24 attached to each of its four corners. The eight foot posts 24 bear the total weight of the two lifting mechanisms 23 and the inner bed frame 20. The scissor structure 30 maintains a combined position, driving the upper frame 50 closer to the lower frame 55, thus the two lifting mechanisms 23 support the inner bed frame 20 in a stopped height-lowering state.

[0034] Furthermore, a base frame connecting unit 22 is used to connect the lower frame 55 together, and to strengthen the structure of the lifting mechanism 23. In addition, four rollers 25 are installed at the corners of the outside of the lower frame 55, to assist the movement of the electric bed.

[0035] As shown in FIG. 1, the scissors structure 30 is in a folded position, and the upper frame 50 is close to the lower frame 55, so that the inner bed frame 20 is in a lowered position. Figure 4

[0036] In this embodiment, the lifting mechanism 23 is designed as follows to achieve the height adjustment function.

[0037] As shown in FIG. 2, the upper frame 50 has two holes 51 and two rails 52. The rail 52 is a U-shaped body, which is welded to the inside of the upper frame 50. The two rails 52 are parallel to each other, and the openings face each other. The hole 51 penetrates the upper frame 50, and is located at the two ends of the long side of the upper frame 50. Figure 5 Secondly, the lower frame 55 also has two holes 56 and two rails 57. The rail 57 is also a U-shaped body, which is welded to the inside of the lower frame 55. The two rails 57 are parallel to each other, and the openings face each other. The hole 56 penetrates the lower frame 55, and is located at the two ends of the long side of the lower frame 55.

[0038] Next, it is seen that the scissors structure includes an inner frame 31, an outer frame 35, four pulleys 34, 38, an extension rod 40, a motor 41, and a pivot 42.

[0039] The inner frame 31 is designed as a rectangular frame, and one of the short sides is defined as a fixed shaft 32, and the other short side is considered as a movable shaft 33. Two fasteners 45 pass through the holes 51 of the upper frame 50, and connect the two ends of the fixed shaft 32, so that the inner frame 31 and the upper frame 50 are rotatably connected together. The two pulleys 34 are pivoted to the two ends of the movable shaft 33, and the pulleys 34 are placed in the rails 57.

[0040] The outer frame 35 is also designed as a rectangular frame, and two of the short sides are considered as the fixed shaft 36 and the movable shaft 37. Other fasteners 46 pass through the holes 56 of the lower frame 55, and connect one end of the fixed shaft 36, so that the outer frame 35 and the lower frame 55 are in a pivoted relationship. The two pulleys 38 are pivoted to the two ends of the movable shaft 37, and the pulleys 38 are placed in the rails 52.

[0041]

[0042] ​​The outer frame 35 is sleeved outside the inner frame 31. The pivot 42 is located at the middle of the inner frame 31, and the two ends of the pivot 42 are connected to the inner frame 31 and the outer frame 35 respectively, serving as two pivot points 39 for cross movement. A high-order seat 43 is welded to the outside of the pivot 42.

[0043] In this embodiment, the telescopic rod 40 is defined as having one end for length extension or shortening, which is the telescopic end, and the telescopic end is pivotally connected to the high-order seat 43. The other end of the telescopic rod 40 is regarded as the fixed end, and the fixed end is pivotally connected to a low-order seat 44 of the fixed shaft 36. In some embodiments, the low-order seat 44 is fixed to another fixed shaft 32, so that the telescopic rod 40 remains in the inverted hanging state, which is also within the scope of the present application.

[0044] The motor 41, also known as an electric motor, is arranged at the fixed end of the telescopic rod 40, and the two are combined into an electric linear actuator (or electric push rod, not labeled).

[0045] As shown in Figure 3 and Figure 5 , in the combined position, the motor 41 is energized to reduce the total length of the telescopic rod 40. With the fixed shaft 36 of the outer frame 35 as the center, the low-order seat 44 drives the telescopic rod 40 to swing towards the lower frame 55. The track 52 guides the pulley 38 to roll and displace, and the movable shaft 37 of the outer frame 35 is away from the fixed shaft 32 of the inner frame 31. The outer frame 35 rotates around the fixed shaft 36. The high-order seat 43 drives the pivot 42 to move downward, so that the pivot point 39 is adjacent to the lower frame 55. Under the traction of the pivot point 39, the track 57 guides the pulley 34 to roll and displace, and the movable shaft 33 of the inner frame 31 is away from the fixed shaft 36 of the outer frame 35. The inner frame 31 rotates around the fixed shaft 32 and swings towards the upper frame 50, completing the action of the scissor structure 30 driving the upper frame 50 to approach the lower frame 55. In this way, the two lifting mechanisms 23 support the inner bed frame 20 to stop in the height-reduced state.

[0046] From another angle, as shown in Figure 4 , Figure 5 , in the unfolded position, the motor 41 is energized to extend the total length of the telescopic rod 40, drive the inner frame 31 and the outer frame 35 to cross, and the pivot point 39 is away from the lower frame 55. The pulley 34 rolls and displaces on the track 57 of the lower frame 55 and generates a resisting action, driving the movable shaft 33 of the inner frame 31 to approach the fixed shaft 36 of the outer frame 35. At the same time, the pulley 38 rolls and displaces on the track 52 of the upper frame 50 and generates a supporting action, driving the movable shaft 37 of the outer frame 35 to be adjacent to the fixed shaft 32 of the inner frame 31, completing the action of the scissor structure 30 supporting the upper frame 50 away from the lower frame 55. In this way, the two lifting mechanisms 23 lift the inner bed frame 20 to a higher position.

[0047] Those skilled in the art can understand and make changes to the above embodiments without departing from the broad concept of the present application. Therefore, the present application is not limited to the specific embodiments disclosed in the specification, and any modifications made in accordance with the spirit and technical scope of the present application should be covered and protected by the text of the present application.

Claims

1. An electric bed having a bed frame supported by two lifting mechanisms, characterised in that, The lifting mechanism comprises: a scissors structure, comprising: an inner frame, each end of which has a fixed shaft and a movable shaft; an outer frame, which is connected to the inner frame and can crosswise move, each end of the outer frame has a fixed shaft and a movable shaft; a telescopic rod, one end of which is lengthened or shortened, and the other end is pivoted to one of the fixed shafts of the two; a motor, which is connected to the telescopic rod, the motor can change the total length of the telescopic rod when powered; a pivot, which is arranged at a fulcrum of the crosswise movement of the inner frame and the outer frame, and is connected to the telescopic end of the telescopic rod; an upper frame, which is connected to the inner bed frame, the upper frame is pivoted to the fixed shaft of the inner frame, and the movable shaft of the outer frame reciprocates to support the upper frame; and a lower frame, which is pivoted to the fixed shaft of the outer frame, and the movable shaft of the inner frame reciprocates to resist the lower frame.

2. The power bed of claim 1, wherein, Further comprising: a plurality of connecting devices, which are respectively arranged at the two sides of the inner bed frame, and are connected to the corresponding upper frame.

3. The power bed of claim 1, wherein, The upper frame is fixed with two tracks, which are parallel, and receive two pulleys of the outer frame, the two pulleys are located at the two ends of the movable shaft.

4. The power bed of claim 1, wherein, The lower frame is fixed with two tracks, which are parallel, and receive two pulleys of the inner frame, the two pulleys are located at the two ends of the movable shaft.

5. The power bed of claim 1, wherein, Further comprising: a base frame connecting unit, which connects the two lower frames of the two lifting mechanisms.

6. The power bed of claim 1, wherein, Further comprising: an outer bed frame, which is connected to the outer part of the inner bed frame.

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