Electric bed

Abstract

The utility model discloses an electric bed, and belongs to the technical field of smart home. An electric bed comprises a bed frame and two bed board turnover mechanisms arranged at the bed head end and the bed tail end respectively. Each set of bed board turnover mechanism comprises a turnover bed board hinged to the middle of the bed frame, at least two linear drivers hinged to the turnover bed board and arranged in parallel, and a driving motor used for driving the linear drivers to stretch out and draw back; the fixed ends of the linear drivers are installed on the supporting part of the bed frame, the multiple linear drivers which are arranged in parallel are in transmission connection through a transmission rod, and the output end of the driving motor is connected with the transmission rod; and the driving motor rotates to drive the plurality of linear drivers of one group of bed board turnover mechanism to stretch out and draw back at the same time. The two linear drivers are driven by the driving motor through the transmission rod to stretch out and draw back synchronously to achieve the turnover function of the bed board, the supporting stability is good, the control mode is simple, and cost is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of intelligent furniture, in particular to an electric bed. Background Art

[0002] With the development of the economic society, smart home has increasingly entered the lives of ordinary people. The electric bed has functions such as head and foot inclination and massage, which can meet the various needs of different people for the bed, so it has been widely used.

[0003] At present, most of the electric beds on the market use multiple push rods to drive simultaneously when lifting. For more complex electric beds or wide-body electric beds, three, four or even more linear drives are required for synchronous drive. Each linear drive includes a motor, and each motor needs a controller to control it. Therefore, this system has high requirements for motors and electric control, and its manufacturing cost remains high. It has always been only an option for high-income groups, hindering the large-scale popularization of electric beds. Summary of the Utility Model

[0004] In order to solve the above technical problems, the utility model provides an electric bed, which not only has low manufacturing difficulty and simple control method, but also reduces the manufacturing cost, which is beneficial to the popularization of electric beds.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is: an electric bed, including a bed frame and two groups of bed board flipping mechanisms respectively arranged at the head end and the tail end of the bed. Each group of the bed board flipping mechanisms includes: a flipping bed board hinged to the middle of the bed frame, at least two linearly arranged and parallel linear drives hinged to the flipping bed board, and a driving motor used to drive the linear drives to stretch and contract; the fixed ends of the linear drives are installed on the supporting part of the bed frame, and a plurality of linearly arranged and parallel linear drives are connected by a transmission rod, and the output end of the driving motor is connected to the transmission rod; when the driving motor rotates, it can simultaneously drive the linear drives of a group of bed board flipping mechanisms to stretch and contract.

[0006] Further, the linear drive includes a gear box, a gear set arranged in the gear box, a lead screw drivingly connected to the gear set, a nut helically connected to the lead screw, and a telescopic rod fixedly connected to the nut.

[0007] Further, a first hinge seat is arranged on the gear box, and a second hinge seat is arranged at the end of the telescopic rod.

[0008] Further, a first mating seat for hinged cooperation with the first hinge seat is arranged on the supporting part of the bed frame; a second mating seat for hinged cooperation with the second hinge seat is fixedly installed on the middle cross beam of the flipping bed board.

[0009] Further, the gear set is a bevel gear, a face gear, or a crossed-axis gear.

[0010] Further, one gear in the gear set is connected to the transmission rod, and the other gear in the gear set is in transmission connection with the lead screw.

[0011] Further, the drive motor is fixedly installed on the gearbox or outside the gearbox.

[0012] Further, a Hall sensor for recording the rotation position of the drive motor is provided on the drive motor.

[0013] Further, the bed frame is composed of a plurality of split bed frames spliced together.

[0014] Further, the flip bed board is composed of a plurality of split bed boards corresponding to the number of the split bed frames.

[0015] Advantageous technical effects of the present utility model:

[0016] 1. Each flip bed board of the electric bed of the present utility model is supported by two linear drivers arranged side by side, and one drive motor drives the two linear drivers to synchronously extend and retract through a transmission rod. This wide-body electric bed can achieve the flipping function of the head bed board and the foot bed board with only two motors, and it has good support stability, simple control method, and low cost.

[0017] 2. The linear driver of the present utility model includes a gearbox, a gear set, a lead screw, a nut, and a telescopic rod fixedly connected to the nut. Compared with the traditional linear driver, the linear driver of the present utility model has a simpler structure and lower cost.

[0018] 3. The electric bed of the present utility model adopts a modular design. The entire wide-body electric bed is composed of four split bed frames and is assembled into one by the user. This design reduces the packaging volume and is beneficial to reducing the packaging cost and transportation cost. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions of the present utility model, the drawings required for describing the embodiments will be briefly introduced below.

[0020] Figure 1 It is a schematic diagram of the overall structure of the electric bed according to Embodiment 1 of the present utility model;

[0021] Figure 2 It is a schematic diagram of the assembly of the flip bed board and the linear driver according to Embodiment 1 of the present utility model;

[0022] Figure 3 It is a schematic diagram of the structure of the linear driver according to Embodiment 1 of the present utility model;

[0023] Figure 4Schematic diagram of the split bed frame splicing according to Embodiment 2 of the present utility model.

[0024] Wherein, 10 - bed frame, 11 - support part, 12 - split bed frame, 20 - flip bed board, 30 - linear driver, 31 - gear box, 32 - nut, 33 - lead screw, 34 - telescopic rod, 35 - second hinge seat, 36 - first hinge seat, 40 - transmission rod; 50 - drive motor. Detailed implementation manners

[0025] The above embodiments only describe the preferred implementation manners of the present utility model, and do not limit the scope of the present utility model. Without departing from the design spirit of the present utility model, various deformations and improvements made by those of ordinary engineering and technical personnel in the art to the technical solutions of the present utility model shall all fall within the protection scope determined by the claims of the present utility model.

[0026] Embodiment 1

[0027] As Figures 1-3 shown, an electric bed includes a bed frame 10 and two groups of bed board flipping mechanisms respectively arranged at the head end and the tail end of the bed. Each group of bed board flipping mechanisms includes: a flip bed board 20 hinged to the middle of the bed frame 10, at least two linearly arranged linear drivers 30 parallel to each other and hinged to the flip bed board 20, and a drive motor 50 for driving the linear drivers 30 to expand and contract. The fixed ends of the linear drivers 30 are installed on the support part 11 of the bed frame 10. A plurality of linearly arranged linear drivers 30 parallel to each other are connected by a transmission rod 40. The output end of the drive motor 50 is connected to the transmission rod 40; when the drive motor 50 rotates, it can drive the linear drivers 30 of a group of bed board flipping mechanisms to expand and contract simultaneously.

[0028] As Figure 1 shown, flip bed boards 20 are respectively installed at the head end and the tail end of the bed frame 10. As Figure 2As shown, one end of the flip bed board 20 close to the middle of the bed frame 10 is hinged to the crossbeam in the middle of the bed frame 10; the middle of the flip bed board 20 is hinged to two linear actuators 30 at the same time, and the other end of the linear actuator 30 is hinged to the support part (11) 11 of the bed frame 10. Theoretically, one linear actuator 30 can also drive the flip bed board 20 to flip, but for the wide bed frame 10, two linear actuators 30 simultaneously push the flip bed board 20 to make the entire flip bed board 20 run more stably. If each linear actuator 30 is equipped with a drive motor 50, it is necessary to synchronously control the two linear actuators 30, which not only increases the cost, but also increases the control difficulty of the control system and reduces the reliability of the system. The utility model uses two linear actuators 30 to push the flip bed board 20 to flip, and the two linear actuators 30 on the same side are arranged side by side and are connected by a non-circular transmission rod 40, and the transmission rod 40 is also connected by the drive motor 50. The driving motor 50 is installed on any one of the linear actuators (30) 30. At this time, the driving motor 50 can rotate to simultaneously drive the two linear actuators 30 on the same side to extend and retract, thereby driving the flip bed board 20 to flip.

[0029] When the flip bed board 20 at the head of the bed is flipped, the back of the head of the human body can be lifted to an angle. The middle part of the bed frame (10) is a flat plate, which can be used to support the buttocks of the human body. When the flip bed board 20 at the foot of the bed is flipped, the legs of the human body can be lifted to put the person at a more comfortable angle.

[0030] Preferably, if Figure 3 As shown, the linear drive 30 includes a gear box 31, in which a gear set is provided, and the gear set can transmit motion, one gear in the gear set is connected to the transmission rod 40, and another gear in the gear set is transmission-connected to the screw rod 33, and a nut 32 is spirally connected to the screw rod 33, and the nut 32 is also fixedly connected to the telescopic rod 34. In addition, a first hinge seat 36 is provided on the gear box 31, and a second hinge seat 35 is provided at the end of the telescopic rod 34. When the transmission rod 40 rotates, the transmission rod 40 drives the gear set to rotate, and the gear set drives the screw rod 33 to rotate. Since the telescopic rod 34 is restricted from rotating by the second hinge seat 35, when the screw rod 33 rotates, the nut 32 is driven to also telescope with the telescopic rod 34 along the axis of the screw rod 33, and when the telescopic rod 34 is extended, the flip bed board 20 can be pushed to flip.

[0031] Preferably, since the axes of the transmission rod 40 and the screw rod 33 are arranged vertically, the gear set can be in the form of a bevel gear, a face gear, or a staggered axis gear.

[0032] like Figure 2 As shown, the driving motor 50 can be directly fixedly mounted on the gear box 31 , or can be firstly mounted on a fixing plate, and then the fixing plate is fixedly connected to the gear box 31 .

[0033] Preferably, the drive motor 50 is fixedly installed outside the gearbox 31. If the drive motor 50 is arranged between the two linear drivers 30, at least one linear driver 30 needs to be disassembled when installing and disassembling the drive motor 50, which is very inconvenient. By arranging the drive motor 50 outside the gearbox 31, both installation and disassembly are very convenient.

[0034] In the prior art, the linear driver is equipped with a travel plate for controlling the minimum and maximum positions of the linear driver. Since the present utility model adopts a mode of driving two linear drivers 30 by one motor, a Hall sensor for recording the rotational position of the drive motor 50 is provided on the drive motor 50. The minimum and maximum positions of the linear driver 30 are recorded by the Hall sensor. The Hall sensor can transmit the position information to the controller, so the controller can also display the real-time flipping angle of the flipping bed board 20.

[0035] Embodiment 2

[0036] As Figure 4 shown, the difference between this Embodiment 2 and Embodiment 1 is that: the bed frame 10 is spliced by a plurality of split bed frames 12; the flipping bed board 20 is composed of a plurality of split bed boards corresponding to the number of split bed frames 12. In order to reduce the packaging volume and facilitate transportation, the bed frame 10 of the present utility model is divided into 4 split bed frames 12, and each split bed frame 12 is connected by fasteners to form the bed frame 10. One split bed board is provided on each split bed frame 12. As mentioned above, the two split bed boards on the head end side / tail end side of the bed are taken as a group and are pushed by the two linear drivers 30 on the same side to flip synchronously.

[0037] As described above, the above are only the specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. An electric bed, characterized in that: The invention comprises a bed frame (10) and two groups of bed board turning mechanisms respectively arranged at the head end and the foot end of the bed, wherein each group of the bed board turning mechanisms comprises: a turning bed board (20) hinged to the middle part of the bed frame (10), at least two mutually parallel linear actuators (30) hinged to the turning bed board (20), and a driving motor (50) used to drive the linear actuator (30) to extend and retract; the fixed end of the linear actuator (30) is mounted on the supporting part (11) of the bed frame (10), the multiple mutually parallel linear actuators (30) are connected by transmission rods (40), and the output end of the driving motor (50) is connected to the transmission rods (40); the driving motor (50) rotates to simultaneously drive the multiple linear actuators (30) of a group of bed board turning mechanisms to extend and retract.

2. The electric bed according to claim 1, characterized in that: The linear drive (30) comprises a gear box (31), a gear set arranged in the gear box (31), a screw rod (33) drivingly connected to the gear set, a nut (32) screwed to the screw rod (33), and a telescopic rod (34) fixedly connected to the nut (32).

3. The electric bed according to claim 2, characterized in that: The gear box (31) is provided with a first hinge seat (36), and the end of the telescopic rod (34) is provided with a second hinge seat (35).

4. The electric bed according to claim 3, wherein: A first matching seat hingedly connected to the first hinged seat (36) is provided on the support portion (11) of the bed frame (10); and a second matching seat hingedly connected to the second hinged seat (35) is fixedly mounted on the middle crossbeam of the flip bed board (20).

5. The electric bed according to claim 2, characterized in that: The gear set is a bevel gear or a face gear or a staggered axis gear.

6. The electric bed according to claim 2, wherein: One gear in the gear set is connected to the transmission rod (40), and another gear in the gear set is transmission-connected to the screw rod (33).

7. The electric bed according to claim 2, characterized in that: The driving motor (50) is fixedly mounted on the gear box (31) or outside the gear box (31).

8. The electric bed according to claim 1, characterized in that: The drive motor (50) is provided with a Hall sensor for recording the rotation position of the drive motor (50).

9. The electric bed according to claim 1, wherein: The bed frame (10) is formed by splicing a plurality of split bed frames (12).

10. The electric bed according to claim 9, wherein: The turning bed board (20) is composed of a plurality of split bed boards corresponding in number to the split bed frame (12).

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