Electric bed frame

Abstract

The utility model discloses an electric bed frame which comprises a head, a waist, a leg and a foot base plate which are sequentially hinged, a head driving assembly and a leg and foot driving assembly, and the head driving assembly comprises a first electric push rod, a first lifting frame, a first guide wheel, a first guide rail and a first limiting block. The leg and foot driving assembly comprises a second electric push rod, a second lifting frame, a second guide wheel, a second guide rail and a second limiting block; the first electric push rod is used for driving the first lifting frame, a first guide wheel is arranged on the first guide rail, and a first limiting block is arranged at the rear end; the second electric push rod is used for driving the second lifting frame, a second guide wheel on the second electric push rod is arranged on the second guide rail, and a second limiting block is arranged at the front end. According to the scheme, the problems that in an existing electric bed frame, a cushion plate angle limiting mechanism mostly depends on a built-in travel switch of an electric push rod, when a user applies extra acting force on the cushion plate, the electric push rod possibly exceeds theoretical limiting, and the cushion plate is excessively inclined are solved.

Description

Technical Field

[0001] This utility model relates to the field of electric bed frame technology, specifically an electric bed frame. Background Technology

[0002] With the rapid iteration of smart home technology and the significant improvement in residents' quality of life, electric beds, with their intelligent adjustment functions, have gradually replaced traditional flat beds and become the mainstream bedding in the modern home furnishing market. Electric bed frames, through multi-dimensional adjustment functions such as headrest, legrest, and footrest adjustments, can precisely adapt to users' diverse posture needs for reading, watching movies, and sleeping, effectively improving human support comfort and sleep quality. In existing electric bed frames, electric push rods are generally used as the core drive device to adjust the angles of the headrest, legrest, and footrest. However, the current limit mechanism for the footrest angles of electric bed frames mostly relies on the limit switches built into the electric push rods, triggering a power cut-off to achieve the limit. In this limit control method, when the user applies additional force to the footrest, the electric push rod may exceed the theoretical limit angle, causing the footrest to tilt excessively, thereby disrupting the force balance of the human body on the bed frame, causing localized pressure concentration, and affecting user comfort and safety. Utility Model Content

[0003] To address the aforementioned shortcomings, this utility model proposes an electric bed frame. The purpose is to solve the problem that in existing electric bed frames, the pad angle limiting mechanism mostly relies on the limit switch built into the electric push rod. When the user applies additional force to the pad, the electric push rod may exceed the theoretical limit, causing the pad to tilt excessively, thereby affecting the user's comfort and safety.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] An electric bed frame includes a headrest, a lumbar support, a leg rest, a footrest, a support assembly, a head drive assembly, and a leg drive assembly. The head drive assembly includes a first electric push rod, a first lifting frame, at least two first guide wheels, at least two first guide rails, and at least two first limiting blocks. The leg drive assembly includes a second electric push rod, a second lifting frame, at least two second guide wheels, at least two second guide rails, at least two second limiting blocks, and at least two foot driven tubes.

[0006] The head pad, waist pad, leg pad, and foot pad are hinged together sequentially from front to back. The support assembly is disposed on the bottom surface of the head pad, waist pad, leg pad, and foot pad, and the support assembly is used to support the head pad, waist pad, leg pad, and foot pad.

[0007] The first electric push rod is installed at the bottom front side of the support assembly, the first lifting frame is installed at the drive end of the first electric push rod, the two first guide wheels are rotatably installed on the left and right inner sides of the bottom of the first lifting frame, the two first guide rails are symmetrically arranged on the bottom surface of the head pad, the two first guide rails are arranged along the front and rear direction, the wheel surfaces of the two first guide wheels abut against the track surfaces of the corresponding first guide rails, and the two first limit blocks are respectively arranged at the rear end of the corresponding first guide rails.

[0008] The second electric push rod is installed at the rear bottom of the support assembly, the second lifting frame is installed at the drive end of the second electric push rod, the two second guide wheels are rotatably installed on the left and right inner sides of the bottom of the second lifting frame, the two second guide rails are symmetrically arranged on the bottom surface of the leg pad, the two second guide rails are arranged in the front-back direction, the wheel surfaces of the two second guide wheels abut against the rail surfaces of the corresponding second guide rails, the two second limit blocks are respectively arranged at the front end of the corresponding second guide rails, one end of the two foot driven tubes is connected to the left and right sides of the support assembly, and the other end of the two foot driven tubes is connected to the bottom surface of the foot pad.

[0009] Preferably, the first limiting block has a concave structure with the opening facing forward, and the second limiting block has a concave structure with the opening facing backward.

[0010] Preferably, the support assembly includes a head support frame, a foot support frame, two first connecting square tubes, two waist support columns, and two second connecting square tubes;

[0011] The head support frame is disposed on the bottom surface of the head pad, and the foot support frame is disposed on the bottom surface of the foot pad. The head support frame and the foot support frame are connected by two first connecting square tubes. The two first connecting square tubes are arranged along the front-back direction and are symmetrically distributed from left to right.

[0012] Two waist support columns are symmetrically arranged on the bottom surface of the waist pad. The waist pad is fixedly connected to two first connecting square tubes. The two waist support columns are connected by two second connecting square tubes, and both second connecting square tubes are arranged in the left-right direction.

[0013] Preferably, the head drive assembly further includes two first triangular connecting pieces, which are respectively installed on the corresponding first connecting square tubes, and the left and right outer sides of the top of the first lifting frame are respectively hinged to the corresponding first triangular connecting pieces.

[0014] Preferably, the leg drive assembly further includes two second triangular connecting pieces, two third triangular connecting pieces, and two fourth triangular connecting pieces;

[0015] Two second triangular connecting pieces are respectively installed on the corresponding first connecting square tubes, and the left and right outer sides of the top of the second lifting frame are respectively hinged to the corresponding second triangular connecting pieces;

[0016] One end of each of the two foot-driven tubes is connected to the corresponding first connecting square tube via a third triangular connecting piece, and the other end of each of the two foot-driven tubes is connected to the bottom surface of the foot pad via a fourth triangular connecting piece.

[0017] Preferably, the device further includes several hinges, and the head pad, waist pad, leg pad, and foot pad are sequentially hinged together in a front-to-back direction via the hinges.

[0018] The technical solution provided by this utility model can include the following beneficial effects:

[0019] Compared to traditional electric bed frame pad angle limiting mechanisms that rely on built-in limit switches on electric actuators, this solution uses a first limiting block and a second limiting block. The first limiting block is positioned at the rear end of the first guide rail, and the second limiting block is positioned at the front end of the second guide rail. This effectively limits the movement of the first and second guide wheels, thereby restricting the movement range of the first and second lifting frames. This limits the adjustment of the head pad, leg pad, and foot pad angles, effectively preventing the electric actuator from exceeding its theoretical limit angle when the user applies additional force to the pads. This prevents excessive tilting of the pads and improves user comfort and safety. Attached Figure Description

[0020] Figure 1 This is a structural diagram of an electric bed frame;

[0021] Figure 2 yes Figure 1 A magnified view of a portion of region A in the middle;

[0022] Figure 3 This is a schematic diagram of one embodiment of the present invention.

[0023] The components include: 1. Head pad; 2. Waist pad; 3. Leg pad; 4. Foot pad; 5. Support assembly; 6. Head drive assembly; 7. Leg and foot drive assembly; 8. Hinge; 51. Head support frame; 52. Foot support frame; 53. First connecting square tube; 54. Waist support column; 55. Second connecting square tube; 61. First electric push rod; 62. First lifting frame; 63. First guide wheel; 64. First guide rail; 65. First limiting block; 66. First triangular connecting piece; 71. Second electric push rod; 72. Second lifting frame; 73. Second guide wheel; 74. Second guide rail; 75. Second limiting block; 76. Foot driven tube; 77. Second triangular connecting piece; 78. Third triangular connecting piece; 79. Fourth triangular connecting piece. Detailed Implementation

[0024] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] In the description of this utility model, it should be understood that the terms "length", "middle", "upper", "lower", "left", "right", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "assembly," and "connection" 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 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.

[0028] An electric bed frame includes a headrest 1, a lumbar support 2, a leg support 3, a foot support 4, a support assembly 5, a head drive assembly 6, and a leg drive assembly 7. The head drive assembly 6 includes a first electric push rod 61, a first lifting frame 62, at least two first guide wheels 63, at least two first guide rails 64, and at least two first limiting blocks 65. The leg drive assembly 7 includes a second electric push rod 71, a second lifting frame 72, at least two second guide wheels 73, at least two second guide rails 74, at least two second limiting blocks 75, and at least two foot driven tubes 76.

[0029] The head pad 1, the waist pad 2, the leg pad 3, and the foot pad 4 are hinged together sequentially from front to back. The support assembly 5 is disposed on the bottom surface of the head pad 1, the waist pad 2, the leg pad 3, and the foot pad 4. The support assembly 5 is used to support the head pad 1, the waist pad 2, the leg pad 3, and the foot pad 4.

[0030] The first electric push rod 61 is installed at the bottom front side of the support assembly 5, the first lifting frame 62 is installed at the drive end of the first electric push rod 61, the two first guide wheels 63 are rotatably installed on the left and right inner sides of the bottom of the first lifting frame 62, the two first guide rails 64 are symmetrically arranged on the bottom surface of the head pad 1, the two first guide rails 64 are arranged in the front and back direction, the wheel surfaces of the two first guide wheels 63 abut against the track surfaces of the corresponding first guide rails 64, and the two first limit blocks 65 are respectively arranged at the rear end of the corresponding first guide rails 64.

[0031] The second electric push rod 71 is installed at the rear bottom of the support assembly 5. The second lifting frame 72 is installed at the drive end of the second electric push rod 71. The two second guide wheels 73 are rotatably installed on the left and right inner sides of the bottom of the second lifting frame 72. The two second guide rails 74 are symmetrically arranged on the bottom surface of the leg pad 3. The two second guide rails 74 are arranged in the front-back direction. The wheel surfaces of the two second guide wheels 73 abut against the track surfaces of the corresponding second guide rails 74. The two second limit blocks 75 are respectively arranged at the front end of the corresponding second guide rails 74. One end of the two foot driven tubes 76 is connected to the left and right sides of the support assembly 5, and the other end of the two foot driven tubes 76 is connected to the bottom surface of the foot pad 4.

[0032] One type of electrically operated bed frame in this solution, as described in this embodiment, is... Figure 1-2As shown, two of each of the following components are provided: the first guide wheel 63, the first guide rail 64, the first limiting block 65, the second guide wheel 73, the second guide rail 74, the second limiting block 75, and the foot driven tube 76. Initially, the head pad 1, the waist pad 2, the leg pad 3, and the foot pad 4 are all on the same horizontal plane. When the head pad 1 needs to be lifted, the first electric push rod 61 is activated, driving the first lifting frame 62 to move in the rear-upward direction, thus lifting the head pad 1. Simultaneously, during the rear-upward movement of the first lifting frame 62, the two first guide wheels 63 move backward on their respective first guide rails 64, ensuring the stability of the upward movement of the first lifting frame 62. When the leg pad 3 and the foot pad 4 need to be lifted, the second electric push rod 71 is activated, driving the second lifting frame 72 to move in the front-upward direction, thereby lifting the leg pad 3 upward. Simultaneously, as the second lifting frame 72 moves forward and upward, the two second guide wheels 73 move forward on their respective second guide rails 74, ensuring the stability of the second lifting frame 72's upward movement. The foot-driven tube 76 serves as a rigid link connecting the support assembly 5 and the foot pad 4. When the leg pad 3 is raised, the hinged relationship between the leg pad 3 and the foot pad 4 generates an upward pushing force on the foot pad 4. This pushing force is transmitted to the foot pad 4 through the foot-driven tube 76, causing the foot pad 4 to follow the movement of the leg pad 3 and rise upward.

[0033] Compared to traditional electric bed frame pad angle limiting mechanisms that rely on built-in limit switches on electric actuators, this solution uses a first limiting block 65 and a second limiting block 75. The first limiting block 65 is positioned at the rear end of the first guide rail 64, and the second limiting block 75 is positioned at the front end of the second guide rail 74. This effectively limits the movement of the first guide wheel 63 and the second guide wheel 73, thereby limiting the movement range of the first lifting frame 62 and the second lifting frame 72. This limits the adjustment of the angles of the head pad 1, leg pad 3, and foot pad 4, effectively preventing the electric actuator from exceeding its theoretical limit angle when the user applies additional force to the pad. This prevents the pad from tilting excessively, improving user comfort and safety.

[0034] Preferably, the first limiting block 65 has a concave structure with its opening facing forward, and the second limiting block 75 has a concave structure with its opening facing backward. In this embodiment, as... Figure 2As shown, since the first limiting block 65 has a concave structure with its opening facing forward, when the first limiting block 65 constrains the first guide wheel 63, the first guide wheel 63 will precisely embed into the internal space of the concave structure, effectively preventing the first guide wheel 63 from displacing in the left or right direction, further improving the accuracy and stability of the limiting function of the first limiting block 65. Similarly, since the second limiting block 75 has a concave structure with its opening facing backward, when the second limiting block 75 limits the second guide wheel 73, the second guide wheel 73 will precisely embed into the internal space of the concave structure, effectively preventing the second guide wheel 73 from displacing in the left or right direction, further improving the accuracy and stability of the limiting function of the second limiting block 75.

[0035] Preferably, the support assembly 5 includes a head support frame 51, a foot support frame 52, two first connecting square tubes 53, two waist support columns 54, and two second connecting square tubes 55;

[0036] The head support frame 51 is disposed on the bottom surface of the head pad 1, and the foot support frame 52 is disposed on the bottom surface of the foot pad 4. The head support frame 51 and the foot support frame 52 are connected by two first connecting square tubes 53. Both first connecting square tubes 53 are arranged in the front-back direction and are symmetrically distributed from left to right.

[0037] Two waist support columns 54 are symmetrically arranged on the bottom surface of the waist pad 2. The waist pad 2 is fixedly connected to two first connecting square tubes 53. The two waist support columns 54 are connected by two second connecting square tubes 55, and both second connecting square tubes 55 are arranged in the left-right direction.

[0038] In this embodiment, as Figure 1 As shown, the head support frame 51 and the foot support frame 52 are connected by two first connecting square tubes 53 arranged symmetrically in the front-back direction and left-right, forming a stable rectangular frame structure foundation. This structure can effectively distribute the pressure from various parts of the body on the bed frame, ensuring the overall stability of the bed frame under load. Two lumbar support columns 54 are provided on the bottom surface of the lumbar pad 2, and the two are connected by two second connecting square tubes 55 arranged in the left-right direction, which can further enhance the structural strength of the lumbar support area.

[0039] Preferably, the head drive assembly 6 further includes two first triangular connecting pieces 66, which are respectively installed on the corresponding first connecting square tubes 53, and the left and right outer sides of the top of the first lifting frame 62 are respectively hinged to the corresponding first triangular connecting pieces 66.

[0040] In this embodiment, as Figure 1 As shown, the first triangular connecting piece 66 utilizes the high stability of its triangular structure to effectively enhance the connection strength between the first lifting frame 62 and the two first connecting square tubes 53, making the first lifting frame 62 more stable during the lifting process.

[0041] Preferably, the leg drive assembly 7 further includes two second triangular connecting pieces 77, two third triangular connecting pieces 78, and two fourth triangular connecting pieces 79;

[0042] Two second triangular connecting pieces 77 are respectively installed on the corresponding first connecting square tube 53, and the left and right outer sides of the top of the second lifting frame 72 are respectively hinged to the corresponding second triangular connecting pieces 77;

[0043] One end of each of the two foot-driven tubes 76 is connected to the corresponding first connecting square tube 53 via their respective third triangular connecting pieces 78, and the other end of each of the two foot-driven tubes 76 is connected to the bottom surface of the foot pad 4 via their respective fourth triangular connecting pieces 79.

[0044] In this embodiment, as Figure 1 As shown, the second triangular connecting piece 77, the third triangular connecting piece 78, and the fourth triangular connecting piece 79 all possess high stability. By setting the second triangular connecting piece 77, the strength of the connection between the second lifting frame 72 and the two first connecting square tubes 53 can be effectively enhanced, making the second lifting frame 72 more stable during lifting. By setting the third triangular connecting piece 78 and the fourth triangular connecting piece 79, the relative position between the foot driven tube 76 and the first connecting square tube 53 and the foot pad 4 is ensured to be stable during movement, guaranteeing the smooth movement of the foot pad 4.

[0045] Preferably, it also includes a plurality of hinges 8, wherein the head pad 1, the waist pad 2, the leg pad 3, and the foot pad 4 are hinged together sequentially via the hinges 8 in a front-to-back direction. In this embodiment, as shown... Figure 3 As shown, the hinge 8 ensures that the head pad 1, the leg pad 3, and the foot pad 4 remain stable during rotation, reducing shaking and jamming.

[0046] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. An electric bed frame, characterized by: It includes a head pad, a waist pad, a leg pad, a foot pad, a support assembly, a head drive assembly, and a leg and foot drive assembly. The head drive assembly includes a first electric push rod, a first lifting frame, at least two first guide wheels, at least two first guide rails, and at least two first limiting blocks. The leg and foot drive assembly includes a second electric push rod, a second lifting frame, at least two second guide wheels, at least two second guide rails, at least two second limiting blocks, and at least two foot driven tubes. The head pad, waist pad, leg pad, and foot pad are hinged together sequentially from front to back. The support assembly is disposed on the bottom surface of the head pad, waist pad, leg pad, and foot pad, and the support assembly is used to support the head pad, waist pad, leg pad, and foot pad. The first electric push rod is installed at the bottom front side of the support assembly, the first lifting frame is installed at the drive end of the first electric push rod, the two first guide wheels are rotatably installed on the left and right inner sides of the bottom of the first lifting frame, the two first guide rails are symmetrically arranged on the bottom surface of the head pad, the two first guide rails are arranged along the front and rear direction, the wheel surfaces of the two first guide wheels abut against the track surfaces of the corresponding first guide rails, and the two first limit blocks are respectively arranged at the rear end of the corresponding first guide rails. The second electric push rod is installed at the rear bottom of the support assembly, the second lifting frame is installed at the drive end of the second electric push rod, the two second guide wheels are rotatably installed on the left and right inner sides of the bottom of the second lifting frame, the two second guide rails are symmetrically arranged on the bottom surface of the leg pad, the two second guide rails are arranged in the front-back direction, the wheel surfaces of the two second guide wheels abut against the rail surfaces of the corresponding second guide rails, the two second limit blocks are respectively arranged at the front end of the corresponding second guide rails, one end of the two foot driven tubes is connected to the left and right sides of the support assembly, and the other end of the two foot driven tubes is connected to the bottom surface of the foot pad.

2. The motorized bed frame of claim 1, wherein: The first limiting block has a concave structure with the opening facing forward, and the second limiting block has a concave structure with the opening facing backward.

3. The motorized bed frame of claim 1, wherein: The support assembly includes a head support frame, a foot support frame, two first connecting square tubes, two waist support columns, and two second connecting square tubes. The head support frame is disposed on the bottom surface of the head pad, and the foot support frame is disposed on the bottom surface of the foot pad. The head support frame and the foot support frame are connected by two first connecting square tubes. The two first connecting square tubes are arranged along the front-back direction and are symmetrically distributed from left to right. Two waist support columns are symmetrically arranged on the bottom surface of the waist pad. The waist pad is fixedly connected to two first connecting square tubes. The two waist support columns are connected by two second connecting square tubes, and both second connecting square tubes are arranged in the left-right direction.

4. The motorized bed frame of claim 3, wherein: The head driving assembly further comprises two first triangular connecting plates, each of which is installed on the corresponding first connecting square tube, and the left and right outer sides of the top of the first lifting frame are respectively hinged to the corresponding first triangular connecting plates.

5. The motorized bed frame of claim 3, wherein: The leg driving assembly further comprises two second triangular connecting plates, two third triangular connecting plates and two fourth triangular connecting plates. Each of the two second triangular connecting plates is installed on the corresponding first connecting square tube, and the left and right outer sides of the top of the second lifting frame are respectively hinged to the corresponding second triangular connecting plates. One end of each of the two foot driven pipes is connected to the corresponding first connecting square tube through the corresponding third triangular connecting plate, and the other end of each of the two foot driven pipes is connected to the bottom surface of the foot pad through the corresponding fourth triangular connecting plate.

6. The motorized bed frame of claim 1, wherein: Further comprising a plurality of hinges, the head pad, the waist pad, the leg pad and the foot pad are sequentially hinged through the hinges in the front-to-back direction.

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