TWI883945B - Electric bed - Google Patents

Abstract

The present invention is an electric bed, comprising a base frame and a sliding unit. The base frame comprises two sliding rails extending in parallel to a front-back direction. The two sliding rails respectively have a vertical wall, a top wall extending from the top side of the vertical wall, a bottom wall extending from the bottom side of the vertical wall, and a baffle extending upward from the bottom wall. The sliding unit comprises a frame located above the two sliding rails, and two sliding joints arranged at the bottom side of the frame. The two sliding joints are slidably arranged on the two sliding rails, respectively. The sliding unit can slide forward and backward relative to the base frame. In this way, the bed frame of the electric bed can slide toward the head of the bed when the back is raised. The structure is stable and durable and only slightly increases the weight.

Description

Electric bed

The present invention relates to furniture, in particular to an electric bed.

Generally, electric beds only have the functions of lifting the back and legs. Although they can meet the basic needs of adjusting posture, they are still inconvenient to use. For example, when the user wants to raise his back, because the buttocks remain in place, as the tilt angle increases, the pressure on the abdomen also increases. Especially for pregnant women or obese people, they often need to constantly adjust their sitting posture during the process of lifting their backs to relieve the pressure on the abdomen. If the user cannot move his body independently, he must rely on the help of others, which increases the burden on the caregiver.

In addition, when the back of a general electric bed is raised, the user's shoulders gradually move away from the head of the bed, making it difficult for the user to pick up items placed on the bedside cabinet or near the head of the bed, which is still inconvenient to use. Therefore, there are electric beds currently designed so that the bed frame moves toward the head of the bed when the back is raised. However, the structural strength of this type of bed frame is insufficient, especially the slide rails are easily deformed when bearing weight for a long time. If the structural strength of the slide rails is increased and the material is increased, the weight of the bed will increase, which is not conducive to transportation.

One object of the present invention is to provide an electric bed whose bed frame can slide toward the head of the bed when the back is raised, and the structure is stable and durable with only a slight increase in weight.

In order to achieve the above-mentioned purpose, the electric bed of the present invention comprises a base frame and a sliding unit. The base frame comprises two sliding rails extending in parallel to a front-back direction. The two sliding rails respectively have a vertical wall, a top wall extending from at least a part of the top side of the vertical wall, a bottom wall extending from at least a part of the bottom side of the vertical wall, and a baffle extending upward from at least a part of the bottom wall. The sliding unit comprises a frame located above the two sliding rails, and two sliding parts arranged on the bottom side of the frame. The two sliding parts are slidably arranged on the two sliding rails, respectively. The sliding unit can slide forward and backward relative to the base frame. Thereby, the bed frame of the electric bed can slide toward the head of the bed when the back is raised. The structure is stable and durable and only slightly increases the weight.

The technical content and features of the present invention are described in detail below by using a preferred embodiment in conjunction with drawings. As shown in FIGS. 1 to 3, an electric bed 1 provided by a preferred embodiment of the present invention comprises a bottom frame 10, a rear frame 18, a sliding unit 20, a back unit 30, two front connecting rods 38, a hip unit 40, a thigh unit 44, a calf unit 48, and two actuators 50. For the convenience of explanation, arrow X indicates the front-back direction, arrow Y indicates the left-right direction, and arrow Z indicates the up-down direction, but this is not intended to limit the scope of the patent.

The base frame 10 includes two slide rails 12 extending parallel to the front-rear direction X, and a front rod 13 connecting the front ends of the two slide rails 12. As shown in Figures 4 and 5, the two slide rails 12 respectively have a vertical wall 14, a top wall 15 extending outward from the top side of the vertical wall 14, a bottom wall 16 extending outward from the bottom side of the vertical wall 14, and a baffle wall 17 extending upward from a partial outer side of the bottom wall 16, that is, the two top walls 15 extend from the corresponding two vertical walls 14 in opposite directions, and the two bottom walls 16 extend from the corresponding two vertical walls 14 in opposite directions. However, in other embodiments, the two top walls 15 may extend from the corresponding two vertical walls 14 toward each other, and the two bottom walls 16 may extend from the corresponding two vertical walls 14 toward each other.

The rear frame 18 is a slightly rectangular frame and is pivoted at the rear end of the base frame 10. The rear frame 18 can be pivoted relative to the base frame 10 to fold or unfold the electric bed 1.

The sliding unit 20 includes a frame 22 located above the two slide rails 12, and two sliding portions 24 disposed at the bottom sides of the two ends of the frame 22. The frame 22 is used to support the user's buttocks. The two sliding portions 24 are slidably disposed on the two slide rails 12, respectively, so that the sliding unit 20 can slide forward and backward relative to the base frame 10. In detail, the two sliding parts 24 each have a sliding frame 25, and a plurality of rollers 28 disposed on the sliding frame 25 and abutting against the bottom wall 16 of the two slide rails 12, the rollers 28 are located between the vertical wall 14 and the blocking wall 17, the bottom edge 251 of the sliding frame 25 is located between the vertical wall 14 and the blocking wall 17, and each sliding frame 25 has a main section 26 disposed on the bottom side of the frame 22, and an extension section 27 extending forward from the main section 26. However, in other embodiments, the sliding part 24 can be a slider or other structure made of engineering plastic, and does not necessarily have rollers 28.

The back unit 30 is hinged to the frame 22 of the sliding unit 20 at its rear side to support the back of the user. In this embodiment, the back unit 30 includes a frame 32 and a bed board 34, but it can also be replaced by a metal grid or other supporting structure.

Each of the front connecting rods 38 is pivoted at its two ends on the slide rail 12 of the base frame 10 and the bed board 34 of the back unit 30 , respectively. However, the two front connecting rods 38 can also be arranged at other positions of the base frame 10 and the back unit 30 .

The hip unit 40 is disposed on the rear frame 18 and adjacent to the sliding unit 20. The hip unit 40 and the sliding unit 20 are used together to support the user's hips.

The thigh unit 44 is pivoted at its front side to the hip unit 40 to support the thigh of the user, and the calf unit 48 is pivoted at its front side to the thigh unit 44 to support the calf of the user.

The two actuators 50 have different functions. As shown in FIGS. 2 and 3 , the actuator 50a located in the front is connected to the frame 22 via an extension frame 52 and is pivoted to the back unit 30. Thus, when the actuator 50a is extended, the back unit 30 can be driven to rotate upward, and the two front connecting rods 38 pull the back unit 30 together with the sliding unit 20 forward, so that the user does not move far away from the head of the bed when lifting his back; the actuator 50b located in the rear is pivoted to the thigh unit 44 and the rear frame 18 at its two ends respectively. When the actuator 50b is extended, the thigh unit 44 can be driven to rotate upward and lift the calf unit 48.

Since the back unit 30 and the sliding unit 20 support most of the user's body weight, most of this weight is applied to the bottom wall 16 of the two slide rails 12 through the roller 28 of the sliding unit 20. The structure of the baffle 17 not only greatly enhances the structural strength of the slide rail 12, but also effectively avoids the defect of the slide rail of the known structure eversion. At the same time, the baffle 17 also restricts the slide frame 25 and the roller 28 between the vertical wall 14 and the baffle 17. Even if the slide rail 12 is slightly deformed, it can ensure that the sliding portion 24 will not separate from the slide rail. In order to improve the safety factor, two supporting members 60 can be added. Each supporting member 60 connects the extension section 27 of each sliding frame 25 and the inner side of the frame 22 of the sliding unit 20. The two supporting members 60 are located above the two slide rails 12, so that the sliding frame 25 can be more reliably prevented from turning outward due to excessive force. The above design can greatly increase the structural strength of the base frame 10 and the sliding unit 20, extend the service life, and the added weight is very small, which has little impact on the convenience of transportation, thereby achieving the purpose of the present invention.

Based on the design spirit of the present invention, the structure of the electric bed 1 can have other changes, for example: the structure of the slide rail 12 of the base frame 10 can be applied to the rear frame 18, the structure of the sliding unit 20 can also be applied to the hip unit 40, and the rear frame 18 can also be integrally extended from the base frame 10. All such easily conceivable structural changes should be covered by the scope of the patent application of the present invention.

1: Electric bed 10: Base frame 12: Slide rail 13: Front rod 14: Vertical wall 15: Top wall 16: Bottom wall 17: Stop wall 18: Back frame 20: Sliding unit 22: Frame 24: Sliding joint 25: Sliding frame 251: Bottom edge 26: Main section 27: Extension section 28: Roller 30: Back unit 32: Frame 34: Bed board 38: Front connecting rod 40: Hip unit 44: Thigh unit 48: Calf unit 50,50a,50b: Actuator 52: Extension frame 60: Support

Figures 1-2 are three-dimensional diagrams of an electric bed in a preferred embodiment of the present invention; Figures 3-5 are schematic diagrams of the operation of an electric bed in a preferred embodiment of the present invention.

1: Electric bed

10: Base frame

12: Slide rail

13: Front rod

18: Rear rack

20: Sliding unit

24: Sliding joint

30: Back unit

38:Front connecting rod

40: Hip unit

44: Thigh unit

48: Calf unit

50a: Actuator

52: Extension rack

60: Support parts

Claims (9)

An electric bed comprises: a base frame, comprising two slide rails extending parallel to a front-rear direction, the two slide rails respectively having a vertical wall, a top wall extending from at least a part of the top side of the vertical wall, a bottom wall extending from at least a part of the bottom side of the vertical wall, and a baffle extending upward from at least a part of the bottom wall; and a sliding unit, comprising a frame located above the two slide rails, and two sliding joints arranged on the bottom side of the frame, the two sliding joints being slidably arranged on the two slide rails, respectively, and the sliding unit can slide forward and backward relative to the base frame. An electric bed as described in claim 1, wherein the two top walls extend from the two corresponding vertical walls in opposite directions, and the two bottom walls extend from the two corresponding vertical walls in opposite directions. The electric bed as described in claim 1, wherein the two top walls extend from the corresponding two vertical walls toward each other, and the two bottom walls extend from the corresponding two vertical walls toward each other. As described in claim 1, the two sliding joints respectively have a sliding frame, and a plurality of rollers are arranged on the sliding frame and abut against the bottom walls of the two sliding rails, and the rollers are located between the vertical wall and the baffle wall. An electric bed as described in claim 4, wherein the bottom edge of the sliding frame is located between the vertical wall and the baffle wall. As described in claim 4, the electric bed, wherein each sliding frame has a main section arranged on the bottom side of the frame, and an extension section extending from the main section, and the electric bed further includes two supporting members, each of which connects the extension section of each sliding frame and the frame of the sliding unit. An electric bed as described in claim 6, wherein the two supporting members are located above the two sliding rails. The electric bed as described in claim 1 further includes a back unit pivotally connected to the sliding unit, a front connecting rod with its two ends pivotally mounted on the base frame and the back unit respectively, and an actuator with its two ends respectively mounted on the sliding unit and the back unit; when the back unit is driven by the actuator to swing upward, the sliding unit slides forward along the two sliding rails. The electric bed as described in claim 1 further includes a rear frame pivotally connected to the base frame.

Images