Multifunctional bed support frame and operating method therefor

Abstract

A multifunctional bed support frame and an operating method therefor. The multifunctional bed support frame comprises a bottom frame (1) and an extendable / retractable footrest device; the extendable / retractable footrest device comprises a mounting frame (2) movably connected at the front end of the bottom frame (1); an extendable / retractable footrest device body (3) is provided on the mounting frame (2); driving arms (4) are respectively movably connected to the left and right sides of the mounting frame (2); connecting rod mechanisms (5) are respectively provided on the left and right sides of the bottom frame (1); tail ends of the driving arms (4) on the left and right sides are respectively connected to the connecting rod mechanisms (5) on the left and right sides; a bed frame assembly is connected between the connecting rod mechanisms (5) on the left and right sides; the bed frame assembly comprises a first frame body (6), a second frame body (7), a third frame body (8), and a fourth frame body (9) which are sequentially and movably connected end to end; and the connecting rod mechanisms (5) on the left and right sides are suitable for driving the bed frame assembly to unfold or fold. The multifunctional bed support frame does not cause structural interference when in use and has a reduced seat depth when used as a sofa.

Description

A multifunctional bed frame and its working method Technical Field

[0001] This invention relates to the field of bed accessories technology, specifically to a multifunctional bed frame and its working method. Background Technology

[0002] The existing multi-functional bed frame includes a base frame and a footrest telescopic device. The footrest telescopic device includes a mounting frame vertically fixed to the front end of the base frame. The mounting frame has the footrest telescopic device body. The left and right sides of the base frame are respectively provided with linkage mechanisms. A bed frame assembly is connected between the left and right linkage mechanisms. The bed frame assembly includes a first frame, a second frame, a third frame, and a fourth frame that are movably connected end to end in sequence. The left and right linkage mechanisms are adapted to drive the bed frame assembly to unfold or fold. In the initial state, the bed frame assembly is in a folded state, with the first, second, third, and fourth frames sequentially forming a rectangle. The mounting frame is located on the front side of the folded bed frame assembly. At this time, the multi-functional bed frame can realize the function of a sofa. After the bed frame assembly is unfolded, the first, second, third, and fourth frames are arranged in a straight line. The unfolded bed frame assembly is located above the mounting frame. At this time, the multi-functional bed frame can realize the function of a bed. Technical issues

[0003] Existing multi-functional bed frames have the following problems: the mounting frame is vertically fixed to the front end of the base frame, and the footrest telescopic device increases the seat depth of the sofa. This increased seat depth makes it difficult for the user's back to contact the sofa backrest, affecting user comfort. To allow the user's back to contact the sofa backrest, the sofa backrest needs to be designed to be thicker, making the sofa bulky and unattractive. Another solution is to reduce the distance between the footrest telescopic device and the folded bed frame assembly, thereby reducing the seat depth. However, this solution introduces a new problem: interference occurs between the linkage mechanism and the mounting frame during movement. How to reduce the sofa seat depth while ensuring aesthetics and structural integrity has become a pressing technical problem for those skilled in the art. Technical solutions

[0004] The technical problem to be solved by the present invention is to provide a multifunctional bed frame that does not cause structural interference during use and has the feature of shallow seat depth when used as a sofa.

[0005] To solve the above-mentioned technical problems, the present invention provides a multifunctional bed frame, including a base frame and a footrest telescopic device. The footrest telescopic device includes a mounting frame movably connected to the front end of the base frame, and a body of the footrest telescopic device is mounted on the mounting frame. Drive arms are movably connected to the left and right sides of the mounting frame, and linkage mechanisms are provided on the left and right sides of the base frame. The tail ends of the drive arms on the left and right sides are respectively connected to the linkage mechanisms on the left and right sides. A bed frame assembly is connected between the linkage mechanisms on the left and right sides. The bed frame assembly includes a first frame body and a second frame body movably connected end to end in sequence. The first, second, third, and fourth frames, along with the left and right linkage mechanisms, are adapted to drive the bed frame assembly to unfold or fold. In the initial state, the bed frame assembly is folded, with the first, second, third, and fourth frames sequentially forming a rectangle. The mounting frame is vertically positioned and located at the front of the folded bed frame assembly. When the bed frame assembly unfolds, the linkage mechanism causes the mounting frame to swing and tilt forward. After the bed frame assembly is unfolded, the first, second, third, and fourth frames are arranged in a straight line, with the unfolded bed frame assembly positioned above the mounting frame.

[0006] In a further preferred embodiment, the footrest telescopic device body includes a telescopic component and a driving device disposed on the mounting frame. The driving device is used to drive the telescopic component to extend or retract. When the telescopic component extends, it can lift the user's legs and feet, and when the telescopic component retracts, it can lower the user's legs and feet.

[0007] In a further preferred embodiment, the linkage mechanism includes a first flipping component, a second flipping component, and a third flipping component. The second flipping component and the third flipping component are connected. The first flipping component is used to drive the first frame and the second frame to rotate relative to each other. The second flipping component is used to drive the second frame and the third frame to rotate relative to each other. The third flipping component is used to drive the third frame and the fourth frame to rotate relative to each other.

[0008] In a further preferred embodiment, the third flipping assembly includes a Z-shaped front rocker and a rear rocker movably connected to the bottom frame. A first connecting rod is movably connected to the middle of the Z-shaped front rocker. The end of the first connecting rod away from the Z-shaped front rocker is movably connected to the middle of the rear rocker. The end of the rear rocker away from the bottom frame is movably connected to a fourth frame. The end of the Z-shaped front rocker away from the bottom frame is movably connected to a third frame.

[0009] In a further preferred embodiment, the second flipping assembly includes a pull rod movably connected to the second frame, with one end of the Z-shaped front rocker arm extending from the bottom frame to a swing arm, and the other end of the pull rod movably connected to the swing arm from the second frame.

[0010] In a further preferred embodiment, the first flipping assembly includes a rotating rod disposed on the second frame, one end of the rotating rod being movably connected to a second connecting rod, the end of the second connecting rod away from the rotating rod being movably connected to a third frame, and the other end of the rotating rod being provided with a swing arm, the end of the swing arm away from the rotating rod being movably connected to the first frame.

[0011] In a further preferred embodiment, the left and right sides of the first frame are respectively movably connected to curved rods. The end of each curved rod away from the first frame is provided with a connecting rod extending in a bending direction away from the curved rod. The end of each connecting rod away from the curved rod is provided with a support leg. The curved rod is provided with a limiting shaft extending toward the first frame. The left and right sides of the fourth frame are respectively provided with support shafts. When the bed frame assembly is unfolded, the support leg is supported on the ground by rotating the curved rod. The limiting shaft abuts against the first frame and is located above the first frame. When the bed frame assembly is in a folded state, the support leg abuts against the support shaft by rotating the curved rod.

[0012] A method for operating the aforementioned multifunctional bed frame includes the following steps:

[0013] 1) In the initial state, the bed frame assembly is in a folded state. The first frame, the second frame, the third frame and the fourth frame are sequentially enclosed to form a rectangle. The mounting frame is vertically set and located on the front side of the folded bed frame assembly. The footrest telescopic device uses gravity to achieve a self-locking effect. At this time, the multi-functional bed frame can realize the function of a sofa. When the footrest telescopic device is extended, it can lift the user's legs and feet. When the footrest telescopic device is retracted, it can lower the user's legs and feet.

[0014] 2) When the bed frame assembly is unfolded, the Z-shaped front rocker arm swings upward, causing the mounting frame to swing forward and tilt. The third frame moves upward and the fourth frame flips backward. When the third flipping component moves, it is linked to the second flipping component. The second flipping component causes the second frame to flip forward. When the second frame flips forward, it causes the first flipping component to move. The first flipping component causes the first frame to flip upward. After the bed frame assembly is unfolded, the first frame, second frame, third frame and fourth frame are arranged in a straight line. The unfolded bed frame assembly is located above the mounting frame. At this time, the multi-functional bed frame can realize the bed function. Beneficial effects

[0015] The beneficial effects of the present invention are as follows: When the bed frame assembly is unfolded, the linkage mechanism drives the mounting frame to swing and tilt forward. The tilted footrest telescopic device will not interfere with the moving linkage mechanism. Therefore, the distance between the footrest telescopic device and the folded bed frame assembly can be designed to be smaller, thereby achieving the effect of reducing the seat depth of the sofa. The multifunctional bed frame of the present invention will not produce structural interference when used, and has the characteristic of small seat depth when used as a sofa. Attached Figure Description

[0016] To clearly illustrate the innovative principles of the invention and its advantages over existing multifunctional bed frames, possible embodiments are described below with the aid of accompanying drawings through non-limiting examples applying the stated principles. In the drawings:

[0017] Figure 1 is a schematic diagram of the multifunctional bed frame of the present invention in the sofa function state;

[0018] Figure 2 is the front view of Figure 1;

[0019] Figure 3 is a perspective view of the footrest telescopic device in the extended state;

[0020] Figure 4 is the front view of Figure 3;

[0021] Figure 5 is a perspective view of the bed frame assembly when unfolded;

[0022] Figure 6 is the front view of Figure 5;

[0023] Figure 7 is a schematic diagram of the multifunctional bed frame of the present invention in the bed function state;

[0024] Figure 8 is the front view of Figure 7;

[0025] Figure 9 is an exploded view of the bed frame assembly. The best embodiment of the present invention

[0026] Type the description paragraph of the best embodiment of the invention here. Embodiments of the present invention

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this invention.

[0029] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0030] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Example

[0031] As shown in Figures 1-9, a multifunctional bed frame includes a base frame 1 and a footrest telescopic device. The footrest telescopic device includes a mounting frame 2 movably connected to the front end of the base frame 1. The mounting frame 2 is provided with a footrest telescopic device body 3. Drive arms 4 are movably connected to the left and right sides of the mounting frame 2, respectively. The bottom of the base frame 1 is provided with at least three support feet. The left and right sides of the base frame 1 are respectively provided with linkage mechanisms 5. The tail ends of the drive arms 4 on the left and right sides are respectively connected to the linkage mechanisms 5 on the left and right sides. A bed frame assembly is connected between the linkage mechanisms 5 on the left and right sides. The bed frame assembly includes a first frame body 6 and a second frame body 6 movably connected end to end in sequence. The first frame 6, the second frame 7, the third frame 8, and the fourth frame 9, along with the left and right connecting mechanisms 5, are adapted to drive the bed frame assembly to unfold or fold. In the initial state, the bed frame assembly is in a folded state, with the first frame 6, the second frame 7, the third frame 8, and the fourth frame 9 sequentially forming a rectangle. The mounting frame 2 is vertically arranged and located on the front side of the folded bed frame assembly. When the bed frame assembly unfolds, the connecting mechanism 5 drives the mounting frame 2 to swing and tilt forward. After the bed frame assembly is unfolded, the first frame 6, the second frame 7, the third frame 8, and the fourth frame 9 are arranged in a straight line, with the unfolded bed frame assembly located above the mounting frame 2.

[0032] Preferably, the footrest telescopic device body 3 includes a telescopic component and a driving device disposed on the mounting frame 2. The driving device is used to drive the telescopic component to extend or retract. When the telescopic component extends, it can lift the user's legs and feet, and when the telescopic component retracts, it can lower the user's legs and feet.

[0033] Preferably, the linkage mechanism 5 includes a first flipping component 10, a second flipping component 11, and a third flipping component 12. The second flipping component 11 and the third flipping component 12 are connected. The first flipping component 10 is used to drive the first frame 6 and the second frame 7 to rotate relative to each other. The second flipping component 11 is used to drive the second frame 7 and the third frame 8 to rotate relative to each other. The third flipping component 12 is used to drive the third frame 8 and the fourth frame 9 to rotate relative to each other.

[0034] Preferably, the third flipping assembly 12 includes a Z-shaped front rocker arm 13 and a rear rocker arm 14 movably connected to the bottom frame 1. A first connecting rod 15 is movably connected to the middle of the Z-shaped front rocker arm 13. The end of the first connecting rod 15 away from the Z-shaped front rocker arm 13 is movably connected to the middle of the rear rocker arm 14. The end of the rear rocker arm 14 away from the bottom frame 1 is movably connected to the fourth frame 9. The end of the Z-shaped front rocker arm 13 away from the bottom frame 1 is movably connected to the third frame 8.

[0035] Preferably, the second flipping assembly 11 includes a pull rod 16 movably connected to the second frame 7, and the end of the Z-shaped front rocker arm 13 away from the bottom frame 1 extends into a swing arm 17, and the end of the pull rod 16 away from the second frame 7 is movably connected to the swing arm 17.

[0036] Preferably, the first flipping assembly 10 includes a rotating rod 18 disposed on the second frame 7, one end of the rotating rod 18 is movably connected to a second connecting rod 19, the end of the second connecting rod 19 away from the rotating rod 18 is movably connected to the third frame 8, and the other end of the rotating rod 18 is provided with a swing arm 20, the end of the swing arm 20 away from the rotating rod 18 is movably connected to the first frame 6.

[0037] Preferably, the left and right sides of the first frame 6 are movably connected with bent rods 21, and the end of the bent rod 21 away from the first frame 6 is provided with a connecting rod 22 extending in a bending direction away from the bent rod 1. The end of the connecting rod 22 away from the bent rod 21 is provided with a support leg 23. The bent rod 21 is provided with a limiting shaft 24 extending towards the first frame 6. The left and right sides of the fourth frame 9 are provided with support shafts 25. When the bed frame assembly is unfolded, the support leg 23 is supported on the ground by rotating the bent rod 21, and the limiting shaft 24 abuts against the first frame 6 and is located above the first frame 6. When the bed frame assembly is in the folded state, the support leg 23 abuts against the support shaft 25 by rotating the bent rod 21. Example

[0038] A method for operating the multifunctional bed frame described in Embodiment 1 includes the following steps:

[0039] 1) In the initial state, as shown in Figures 1-4, the bed frame assembly is in a folded state. The first frame 6, the second frame 7, the third frame 8, and the fourth frame 9 are sequentially enclosed to form a rectangle. The mounting frame 2 is vertically set and located on the front side of the folded bed frame assembly. The footrest telescopic device uses gravity to achieve a self-locking effect. At this time, the multi-functional bed frame can realize the function of a sofa, as shown in Figures 3-4. When the footrest telescopic device is extended, it can lift the user's legs and feet, as shown in Figures 1-2. When the footrest telescopic device is retracted, it can lower the user's legs and feet.

[0040] 2) As shown in Figures 5-6, when the bed frame assembly is unfolded, the Z-shaped front rocker arm 13 swings upward, causing the mounting frame 2 to swing forward and tilt. The third frame 8 moves upward and the fourth frame 9 flips backward. When the third flipping component 12 is activated, it is linked to the second flipping component 11. The second flipping component 11 causes the second frame 7 to flip forward. When the second frame 7 flips forward, it causes the first flipping component 10 to activate. The first flipping component 10 causes the first frame 6 to flip upward. As shown in Figures 7-8, after the bed frame assembly is unfolded, the first frame 6, the second frame 7, the third frame 8 and the fourth frame 9 are arranged in a straight line. The unfolded bed frame assembly is located above the mounting frame 2. At this time, the multi-functional bed frame can realize the bed function.

[0041] When the bed frame assembly is unfolded, the linkage mechanism 5 drives the mounting frame 2 to swing and tilt forward. The tilted footrest telescopic device will not interfere with the moving linkage mechanism 5. Therefore, the distance between the footrest telescopic device and the folded bed frame assembly can be designed to be smaller, thereby reducing the seat depth of the sofa. The multifunctional bed frame of this embodiment will not cause structural interference when used, and has the characteristic of small seat depth when used as a sofa.

[0042] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A multifunctional bed frame, comprising a base frame (1) and a telescopic footrest device, characterized in that: The footrest telescopic device includes a mounting frame (2) movably connected to the front end of the base frame (1). The mounting frame (2) is provided with a footrest telescopic device body (3). The left and right sides of the mounting frame (2) are respectively movably connected with drive arms (4). The left and right sides of the base frame (1) are respectively provided with linkage mechanisms (5). The tail ends of the drive arms (4) on the left and right sides are respectively connected to the linkage mechanisms (5) on the left and right sides. A bed frame assembly is connected between the linkage mechanisms (5) on the left and right sides. The bed frame assembly includes a first frame (6), a second frame (7), a third frame (8), and a fourth frame (9) movably connected end to end in sequence. The left and right sides are connected with the drive arms (4) on the left and right sides. The linkage mechanism (5) is adapted to drive the bed frame assembly to unfold or fold. In the initial state, the bed frame assembly is in a folded state, and the first frame (6), the second frame (7), the third frame (8) and the fourth frame (9) are arranged in a rectangle in sequence. The mounting frame (2) is vertically set and located on the front side of the folded bed frame assembly. When the bed frame assembly is unfolded, the linkage mechanism (5) drives the mounting frame (2) to swing and tilt forward. After the bed frame assembly is unfolded, the first frame (6), the second frame (7), the third frame (8) and the fourth frame (9) are arranged in a straight line in front and behind. The unfolded bed frame assembly is located above the mounting frame (2).

2. The multifunctional bed frame according to claim 1, characterized in that: The linkage mechanism (5) includes a first flipping component (10), a second flipping component (11), and a third flipping component (12). The second flipping component (11) and the third flipping component (12) are connected. The first flipping component (10) is used to drive the first frame (6) and the second frame (7) to rotate relative to each other. The second flipping component (11) is used to drive the second frame (7) and the third frame (8) to rotate relative to each other. The third flipping component (12) is used to drive the third frame (8) and the fourth frame (9) to rotate relative to each other.

3. The multifunctional bed frame according to claim 2, characterized in that: The third flip assembly (12) includes a Z-shaped front rocker (13) and a rear rocker (14) movably connected to the bottom frame (1). The middle part of the Z-shaped front rocker (13) is movably connected to a first connecting rod (15). The end of the first connecting rod (15) away from the Z-shaped front rocker (13) is movably connected to the middle part of the rear rocker (14). The end of the rear rocker (14) away from the bottom frame (1) is movably connected to a fourth frame (9). The end of the Z-shaped front rocker (13) away from the bottom frame (1) is movably connected to a third frame (8).

4. The multifunctional bed frame according to claim 3, characterized in that: The second flip assembly (11) includes a pull rod (16) movably connected to the second frame (7), with the Z-shaped front rocker (13) extending from the end away from the bottom frame (1) to a swing rod (17), and the end of the pull rod (16) movably connected to the swing rod (17) from the end away from the second frame (7).

5. The multifunctional bed frame according to claim 4, characterized in that: The first flipping assembly (10) includes a rotating rod (18) disposed on the second frame (7). One end of the rotating rod (18) is movably connected to a second connecting rod (19). The end of the second connecting rod (19) away from the rotating rod (18) is movably connected to a third frame (8). The other end of the rotating rod (18) is provided with a swing arm (20). The end of the swing arm (20) away from the rotating rod (18) is movably connected to a first frame (6).

6. The multifunctional bed frame according to claim 5, characterized in that: The first frame (6) is movably connected to the left and right sides of the first frame (6). The end of the bent rod (21) away from the first frame (6) is provided with a connecting rod (22) extending in the bending direction away from the bent rod (1). The end of the connecting rod (22) away from the bent rod (21) is provided with a support leg (23). The bent rod (21) is provided with a limiting shaft (24) extending towards the first frame (6). The left and right sides of the fourth frame (9) are provided with support shafts (25). After the bed frame assembly is unfolded, the support leg (23) is supported on the ground by rotating the bent rod (21). The limiting shaft (24) abuts against the first frame (6) and is located above the first frame (6). When the bed frame assembly is in the folded state, the support leg (23) abuts against the support shaft (25) by rotating the bent rod (21).

7. A method of operating the multifunctional bed frame according to claim 5, comprising the following steps: 1) In the initial state, the bed frame assembly is in a folded state, and the first frame (6), the second frame (7), the third frame (8) and the fourth frame (9) are sequentially enclosed to form a rectangle, and the mounting frame (2) is vertically set and located on the front side of the folded bed frame assembly; 2) When the bed frame assembly is unfolded, the Z-shaped front rocker (13) swings upward, causing the mounting frame (2) to swing forward and tilt. The third frame (8) moves upward and the fourth frame (9) flips backward. When the third flipping component (12) moves, it is linked to the second flipping component (11). The second flipping component (11) causes the second frame (7) to flip forward. When the second frame (7) flips forward, it causes the first flipping component (10) to move. The first flipping component (10) causes the first frame (6) to flip upward. After the bed frame assembly is unfolded, the first frame (6), the second frame (7), the third frame (8) and the fourth frame (9) are arranged in a straight line. The unfolded bed frame assembly is located above the mounting frame (2).

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