Detachable electric folding sofa bed

Abstract

We offer an easy-to-use, highly stable, and low-failure, detachable, electrically foldable sofa bed. [Solution] The detachable electric folding sofa bed comprises a sofa base 1, a bed board frame 2, and a drive assembly 3. The sofa base includes a plurality of support columns 11, to which a mechanical slide rail 4 is fixed along the longitudinal direction of the sofa base. The drive assembly includes a support arm assembly 31, a slide assembly 32, an electric slide rail 33, an electric slider, and a motor 35. The support arm assembly is hinged to one side of the slide assembly, one end of which is locked in a slide groove of the mechanical slide rail and slidably connected to the mechanical slide rail, the electric slide rail is located at the bottom of the mechanical slide rail and parallel to the mechanical slide rail, and an electric slider is located within the electric slide rail and slidably connected to the electric slide rail, the electric slider is detachably fixed to a slide assembly located above the electric slider.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric sofa beds, and specifically relates to a detachable electric folding sofa bed.

Background Art

[0002] A sofa bed refers to furniture that has both the functions of a sofa and a bed. In modern room layouts, simplicity is emphasized, and multifunctional furniture is increasingly becoming the choice of the public, and the sofa bed is one of them. In a compact room, a sofa bed is necessary to meet the accommodation needs of occasional guests.

[0003] Commercially available folding sofa beds are various folding sofa beds such as two-fold and three-fold. In the prior art, there are some that drive the folding of the sofa bed using a motor as a driving source. However, most of the current electric folding sofa beds directly drive a connecting rod or a support arm using a motor to fold the sofa bed. Such a direct drive method lacks stability when one side of the connecting rod or the support arm deteriorates or when the usage time is too long, resulting in a situation where the bed frame tilts. When the connecting rod or the support arm fails, it is cumbersome to replace the parts, and it becomes impossible to continue using without replacement or repair.

[0004] Chinese Patent Document CN214433158U discloses an electric folding sofa bed including a sofa base provided with an accommodation chamber inside, a bed frame that is housed in the accommodation chamber of the sofa base when folded and is in a bed state when opened, and a driving device for driving the bed frame to open and fold. In this utility model, an operation lever is used as a transmission part of the motor driving force, and the motor directly drives the operation lever. Therefore, the stability may decrease when the operation lever becomes old or is used for a long time.

Summary of the Invention

[0005] The technical problem that this invention aims to solve is to provide a highly stable, low-failure, and detachable electric folding sofa bed.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: a detachable electric folding sofa bed comprising a sofa base, a bed board frame, and a drive assembly. The sofa base includes a plurality of support columns, to which a mechanical slide rail is fixed along the longitudinal direction of the sofa base. The drive assembly includes a support arm assembly, a slide assembly, an electric slide rail, an electric slider, and a motor. The support arm assembly is hinged to one side of the slide assembly, one end of the slide assembly is locked in a slide groove of the mechanical slide rail and slidably connected to the mechanical slide rail, the electric slide rail is located at the bottom of the mechanical slide rail and parallel to the mechanical slide rail, an electric slider is located within the electric slide rail and slidably connected to the electric slide rail, and the electric slider is detachably fixed to a slide assembly located above the electric slider.

[0007] Preferably, the slide assembly includes a mechanical slider and a connecting piece, the mechanical slider being slidably connected to the mechanical slide rail by being locked in a slide groove of the mechanical slide rail, the mechanical slider being detachably fixed to an electric slider located below the mechanical slider, and the connecting piece being fixed to one side of the mechanical slider and hinged to a support arm assembly.

[0008] Preferably, the surface of the mechanical slider is provided with at least four bolt holes parallel to each other, and fastening bolts for detachably securing the mechanical slider to the electric slider are installed in two adjacent bolt holes.

[0009] Preferably, the support arm assembly includes a reversing moment arm and a plurality of drive arms positioned at both ends of the reversing moment arm, the reversing moment arm being T-shaped overall, the plurality of drive arms being hinged to both the left and right ends of the reversing moment arm, and the lower end of the reversing moment arm being hinged to one side of a connecting piece.

[0010] Preferably, a first drive arm is hinged to one end of the reversing moment arm, the first drive arm has one end hinged to the reversing moment arm and the other end hinged to a second drive arm, the second drive arm has one side hinged to the first drive arm and the other end fixed to the bed board frame, a third drive arm is positioned near the second drive arm on the bed board frame, the upper end of the third drive arm is fixed to the bed board frame, and a first fixed moment arm is hinged to one end of the third drive arm away from the second drive arm, the first fixed moment arm has one end hinged to the third drive arm and the other end fixed to the sofa base. A fourth drive arm is hinged to the other end of the reversing moment arm, the fourth drive arm has one end hinged to the reversing moment arm and the other end hinged to a fifth drive arm, the fifth drive arm has one end hinged to the fourth drive arm and the other end hinged to a sixth drive arm, the sixth drive arm has one end hinged to the fifth drive arm and the other end hinged to a seventh drive arm, the seventh drive arm has one end hinged to the sixth drive arm and the other end hinged to a second fixed moment arm, and the lower end of the second fixed moment arm is fixed to the bed board frame.

[0011] Preferably, a movable arm and a connecting arm are further provided. A first movable arm is positioned on one side of the fifth drive arm, the first movable arm being hinged at one end to the bed board frame and at the other end to the middle portion of the fifth drive arm. A second movable arm is positioned on the other side of the first movable arm, the second movable arm being hinged at one end to the middle portion of the first movable arm and at the other end to a connecting arm. The connecting arm is convex in shape overall, and both lower ends of the connecting arm are hinged to the bed board frame, and a third movable arm is hinged to the end of the connecting arm away from the second movable arm, the third movable arm being hinged at one end to the connecting arm and at the other end to both the sixth drive arm and the seventh drive arm.

[0012] Preferably, the bed board frame includes a first bed board frame, a second bed board frame, and a third bed board frame. The first bed board frame and the second bed board frame are hinged together, one end of the second bed board frame away from the first bed board frame is hinged to a connecting arm, and the other end of the connecting arm away from the second bed board frame is hinged to the third bed board frame.

[0013] Preferably, the second drive arm is hinged to the first drive arm on one side and fixed to the first bed board frame on the other side. A third drive arm is positioned near the second drive arm on the first bed board frame, with the upper end of the third drive arm fixed to the first bed board frame, the bottom of the second fixed moment arm fixed to the third bed board frame, and one end of the first movable arm hinged to the second bed board frame. [Effects of the Invention]

[0014] The beneficial effects of this invention are as follows:

[0015] (1) The detachable electric folding sofa bed of the present invention eliminates the conventional method of directly driving the moment arm with a motor by arranging double slide rails. Instead, by driving the electric slider, the electric slider drives the mechanical slider, which in turn drives the reversing moment arm. This ensures that the bed frame on both sides can always operate in synchronous motion, significantly improving stability and preventing tilting of the bed frame.

[0016] (2) In the detachable electric folding sofa bed of the present invention, if the motor or electric slider fails, the electric slider or motor can be removed, and the reversing moment arm can be moved by manually driving the mechanical slider, thereby folding the sofa bed and avoiding a situation where it becomes unusable due to the failure of the electric slider or motor.

[0017] (3) In the detachable electric folding sofa bed of the present invention, the mechanical slider is provided with at least four bolt holes, and the electric slider is detachably fixed to the mechanical slider via two adjacent bolt holes, thereby enabling versatility of the left and right electric sliders. If the left electric slider malfunctions and there is no working left electric slider to replace it, the right electric slider and the mechanical slider at its upper end can be detachably fixed via two other adjacent bolt holes among the four bolt holes. [Brief explanation of the drawing]

[0018] The detachable, electrically foldable sofa bed of this invention will be further described below with reference to the drawings. [Figure 1] This is a schematic diagram of a specific embodiment of the detachable, electrically foldable sofa bed of the present invention. [Figure 2] This is a schematic side view of a specific embodiment of the detachable, electrically foldable sofa bed of the present invention. [Figure 3]This is a schematic diagram of the movable arm and connecting arm of a specific embodiment of the detachable electric folding bed according to the present invention. [Figure 4] This is a schematic diagram of a partial configuration of the drive assembly of a specific embodiment of the detachable electric folding bed according to the present invention. [Figure 5] This is a schematic diagram of the slide assembly of a specific embodiment of the detachable, electrically foldable sofa bed according to the present invention. [Explanation of symbols]

[0019] 1 sofa base, 11 support posts 2 bed board frames, 21 first bed board frame, 22 second bed board frame, 23 third bed board frame 3 Drive assembly, 31 Support arm assembly, 311 Reversing moment arm, 312 First drive arm, 313 Second drive arm, 314 Third drive arm, 315 Fourth drive arm, 316 Fifth drive arm, 317 Sixth drive arm, 318 Seventh drive arm, 32 Slide assembly, 321 Mechanical slider, 322 Connecting piece, 323 Bolt through hole, 33 Electric slide rail, 34 Electric slider, 35 Motor, 36 First fixed moment arm, 37 Second fixed moment arm, 38 Movable arm, 381 First movable arm, 382 Second movable arm, 383 Third movable arm, 39 Connecting arm 4 Mechanical slide rails [Modes for carrying out the invention]

[0020] <Embodiment 1> As shown in FIGS. 1 to 5, the detachable electric folding sofa bed of this embodiment includes a sofa base 1, a bed board frame 2, and a drive assembly 3. The sofa base 1 includes a plurality of support columns 11, and on one side of the support columns 11, a mechanical slide rail 4 arranged along the longitudinal direction of the sofa base 1 is fixed. The drive assembly 3 includes a support arm assembly 31, a slide assembly 32, an electric slide rail 33, an electric slider 34, and a motor 35. The support arm assembly 31 is hinge-connected to one side of the slide assembly 32. One end of the slide assembly 32 is locked in the slide groove of the mechanical slide rail 4 and is slidably connected to the mechanical slide rail 4. The electric slide rail 33 is arranged at the bottom of the mechanical slide rail 4 and is parallel to the mechanical slide rail 4. An electric slider 34 slidably connected to the electric slide rail 33 is arranged in the electric slide rail 33. The electric slider 34 is detachably fixed to the slide assembly 32 above the electric slider 34.

[0021] The slide assembly 32 includes a mechanical slider 321 and a connecting piece 322, the mechanical slider 321 being slidably connected to the mechanical slide rail 4 by locking into a slide groove of the mechanical slide rail 4, the mechanical slider 321 being detachably fixed to an electric slider 34 located below the mechanical slider 321, and the connecting piece 322 being fixed to one side of the mechanical slider 321 and hinged to a support arm assembly 31. The surface of the mechanical slider 321 is provided with four parallel bolt holes 323, and fastening bolts for detachably fixing the mechanical slider 321 to the electric slider 34 are installed in two adjacent bolt holes 323. The support arm assembly 31 includes a reversing moment arm 311 and a plurality of drive arms positioned at both ends of the reversing moment arm 311, the reversing moment arm 311 being T-shaped overall, the plurality of drive arms hinged to both the left and right ends of the reversing moment arm 311, and the lower end of the reversing moment arm 311 hinged to one side of a connecting piece 322.

[0022] A first drive arm 312 is hinged to one end of the reversing moment arm 311, and one end of the first drive arm 312 is hinged to the reversing moment arm 311, and the other end of the first drive arm 312 is hinged to the second drive arm 313, and one side of the second drive arm 313 is hinged to the first drive arm 312, and the other side is fixed to the bed board frame 2, and a third drive arm 314 is positioned near the second drive arm 313 on the bed board frame 2, and the upper end of the third drive arm 314 is fixed to the bed board frame 2, and a first fixed moment arm 36 is hinged to the end of the third drive arm 314 away from the second drive arm 313, and one end of the first fixed moment arm 36 is hinged to the third drive arm 314, and the other end is fixed to the sofa base 1. A fourth drive arm 315 is hinged to the other end of the reversing moment arm 311, and one end of the fourth drive arm 315 is hinged to the reversing moment arm 311, and the other end is hinged to a fifth drive arm 316, and one end of the fifth drive arm 316 is hinged to the fourth drive arm 315, and the other end is hinged to a sixth drive arm 317, and one end of the sixth drive arm 317 is hinged to the fifth drive arm 316, and the other end is hinged to a seventh drive arm 318, and one end of the seventh drive arm 318 is hinged to the sixth drive arm 317, and the other end is hinged to a second fixed moment arm 37, and the lower end of the second fixed moment arm 37 is fixed to the bed board frame 2. A movable arm 38 and a connecting arm 39 are further provided. A first movable arm 381 is positioned on one side of the fifth drive arm 316. The first movable arm 381 is hinged at one end to the bed board frame 2 and at the other end to the middle section of the fifth drive arm 316. A second movable arm 382 is provided on one side of the first movable arm 381. The second movable arm 382 is hinged at one end to the middle section of the first movable arm 381 and at the other end to a connecting arm 39.The connecting arm 39 is generally convex-shaped as a whole. Both lower ends of the connecting arm 39 are hinged and fixed to the bed board frame 2. At one end of the connecting arm 39 away from the second movable arm 382, a third movable arm 383 is hinged. One end of the third movable arm 383 is hinged to the connecting arm 39, and the other end is hinged to both the sixth driving arm 317 and the seventh driving arm 318.

[0023] The bed board frame 2 includes a first bed board frame 21, a second bed board frame 22, and a third bed board frame 23. The first bed board frame 21 and the second bed board frame 22 are hinged and fixed. One end of the second bed board frame 22 away from the first bed board frame 21 is hinged and fixed to the connecting arm 39. A third bed board frame 23 is hinged to one end of the connecting arm 39 away from the second bed board frame 22. One side of the second driving arm 313 is hinged to the first driving arm 312, and the other side is fixed to the first bed board frame 21. Near the second driving arm 313 on the first bed board frame 21, a third driving arm 314 is arranged. The upper end of the third driving arm 314 is fixed to the first bed board frame 21. The bottom of the second fixed moment arm 37 is fixed to the third bed board frame 23. One end of the first movable arm 381 is hinged to the second bed board frame 22.

[0024] In this embodiment of the detachable electric folding sofa bed, during use, when operating via a remote control switch wired to the motor 35, the electric slider 34 slides on the electric slide rail 33. The electric slider 34 and the mechanical slider 321 are detachably fixed together. The electric slider 34 drives the mechanical slider 321 to slide within the mechanical slide rail 4. The mechanical slider 321 drives a reversing moment arm 311, which is hinged to one side of the connecting piece 322. The reversing moment arm 311 is the main stress-receiving member in the support arm assembly 31. This further drives the other drive arms, movable arms, and connecting arms 39, causing the bed board frame 2 to fold.

[0025] Clearly, the embodiments described above are provided only as examples to illustrate embodiments of the present invention and do not limit the embodiments of the present invention. Those skilled in the art can make other different forms of variations or modifications based on the above description. It is not necessary, nor is it possible, to list all embodiments exhaustively. These obvious variations or modifications derived from the spirit of the present invention still fall within the scope of the present invention.

Claims

1. It comprises a sofa base (1), a bed board frame (2), and a drive assembly (3). The sofa base (1) includes a plurality of support columns (11), and a mechanical slide rail (4) is fixed to one side of the support columns (11) along the longitudinal direction of the sofa base (1). The drive assembly (3) includes a support arm assembly (31), a slide assembly (32), an electric slide rail (33), an electric slider (34), and a motor (35). A detachable electric folding sofa bed characterized in that the support arm assembly (31) is hinged to one side of the slide assembly (32), one end of the slide assembly (32) is locked in the slide groove of the mechanical slide rail (4) and is slidably connected to the mechanical slide rail (4), the electric slide rail (33) is positioned at the bottom of the mechanical slide rail (4) and is parallel to the mechanical slide rail (4), an electric slider (34) is positioned within the electric slide rail (33) and is slidably connected to the electric slide rail (33), and the electric slider (34) is detachably fixed to the slide assembly (32) located above the electric slider (34).

2. The detachable electric folding sofa bed according to claim 1, wherein the slide assembly (32) includes a mechanical slider (321) and a connecting piece (322), the mechanical slider (321) is slidably connected to the mechanical slide rail (4) by being locked in a slide groove of the mechanical slide rail (4), the mechanical slider (321) is detachably fixed to the electric slider (34) located below the mechanical slider (321), and the connecting piece (322) is fixed to one side of the mechanical slider (321) and hinged to the support arm assembly (31).

3. The detachable electric folding sofa bed according to claim 2, characterized in that the surface of the mechanical slider (321) is provided with at least four bolt holes (323) that are parallel to each other, and fastening bolts for detachably fixing the mechanical slider (321) and the electric slider (34) are installed in two adjacent bolt holes (323).

4. The detachable electric folding sofa bed according to claim 2, wherein the support arm assembly (31) includes a reversing moment arm (311) and a plurality of drive arms positioned at both ends of the reversing moment arm (311), the reversing moment arm (311) is T-shaped overall, the plurality of drive arms are hinged to both the left and right ends of the reversing moment arm (311), and the lower end of the reversing moment arm (311) is hinged to one side of a connecting piece (322).

5. A first drive arm (312) is hinged to one end of the reversing moment arm (311), and one end of the first drive arm (312) is hinged to the reversing moment arm (311), and the other end of the second drive arm (313) is hinged to the first drive arm (312), and the other end of the second drive arm (313) is fixed to the bed board frame (2), and the bed board frame (2) A third drive arm (314) is positioned near the second drive arm (313), the upper end of which is fixed to the bed board frame (2), and a first fixed moment arm (36) is hinged to one end of the third drive arm (314) away from the second drive arm (313). The first fixed moment arm (36) is hinged to the third drive arm (314) at one end and fixed to the sofa base (1) at the other end. The other end of the reversing moment arm (311) is hinged to a fourth drive arm (315), and one end of the fourth drive arm (315) is hinged to the reversing moment arm (311), and the other end of the fifth drive arm (316) is hinged to a fifth drive arm (316), and one end of the fifth drive arm (316) is hinged to the fourth drive arm (315), and the other end of the sixth drive arm (317) is hinged to a sixth drive arm (317) The detachable electric folding sofa bed according to claim 4, characterized in that one end of the seventh drive arm (318) is hinged to a fifth drive arm (316) and the other end is hinged to a seventh drive arm (318), one end of the seventh drive arm (318) is hinged to a sixth drive arm (317) and the other end is hinged to a second fixed moment arm (37), and the lower end of the second fixed moment arm (37) is fixed to the bed board frame (2).

6. The bed frame further comprises a movable arm (38) and a connecting arm (39). A first movable arm (381) is positioned on one side of the fifth drive arm (316). The first movable arm (381) is hinged at one end to the bed board frame (2) and at the other end to the middle section of the fifth drive arm (316). A second movable arm (382) is provided on one side of the first movable arm (381). The second movable arm (382) is hinged at one end to the middle section of the first movable arm (381) and at the other end to the connecting arm (39). The detachable electric folding sofa bed according to claim 5, wherein the connecting arm (39) is convex in shape overall, both lower ends of the connecting arm (39) are hinged to the bed board frame (2), and a third movable arm (383) is hinged to one end of the connecting arm (39) away from the second movable arm (382), and one end of the third movable arm (383) is hinged to the connecting arm (39), and the other end is hinged to both the sixth drive arm (317) and the seventh drive arm (318).

7. The bed board frame (2) includes a first bed board frame (21), a second bed board frame (22), and a third bed board frame (23), wherein the first bed board frame (21) and the second bed board frame (22) are hinged together, one end of the second bed board frame (22) away from the first bed board frame (21) is hinged together with the connecting arm (39), and the third bed board frame (23) is hinged together with the connecting arm (39) away from the second bed board frame (22), as described in claim 6.

8. The detachable electric folding sofa bed according to claim 7, characterized in that the second drive arm (313) is hinged to the first drive arm (312) on one side and fixed to the first bed board frame (21) on the other side, a third drive arm (314) is positioned near the second drive arm (313) on the first bed board frame (21), the upper end of the third drive arm (314) is fixed to the first bed board frame (21), the bottom of the second fixed moment arm (37) is fixed to the third bed board frame (23), and one end of the first movable arm (381) is hinged to the second bed board frame (22).

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