FOLDABLE BED

Abstract

A foldable bed includes a bed frame unit that includes a first bed frame subunit and a second bed frame subunit, and that is foldable to a bed flat state, where the first bed frame subunit and the second bed frame subunit are arranged in a lengthwise direction. A backrest actuating mechanism includes a backrest connecting member and a backrest driving assembly. The backrest connecting member has a pivotal end and a connecting end. When the bed frame unit is in the bed flat state, the backrest actuating mechanism is operable to convert between a usage state, where a weight of the backrest driving assembly drives the connecting end to move away from the first bed frame, and a storage state, where the connecting end is adjacent to the first bed frame and the backrest driving assembly is moved closer to the backrest frame.

Claims

1. A foldable bed comprising: a support unit; a bed frame unit that is disposed on said support unit and that includes a first bed frame subunit and a second bed frame subunit connected to said first bed frame subunit, said second bed frame subunit being pivotable relative to said first bed frame subunit to fold said bed frame unit from a bed flat state, where said first bed frame subunit and said second bed frame subunit are arranged in a lengthwise direction, to a bed folded state, where said first bed frame subunit is stacked on top of said second bed frame subunit, said first bed frame subunit including a first bed frame that is connected to said support unit, and a backrest frame that is pivotable relative to said first bed frame; and a driving unit that includes a backrest actuating mechanism connected to said first bed frame subunit, said backrest actuating mechanism including a backrest connecting member having a pivotal end that is pivotally connected to said first bed frame, and a connecting end that is opposite to said pivotal end, and a backrest driving assembly pivotally connected between said backrest frame and said connecting end of said backrest connecting member, said backrest driving assembly being operable for driving said backrest frame to pivot relative to said first bed frame; wherein, when said bed frame unit is in the bed flat state, said backrest actuating mechanism is operable to convert between a usage state, where a weight of said backrest driving assembly drives said connecting end of said backrest connecting member to pivot downwardly away from said first bed frame, and where said backrest driving assembly and said backrest frame cooperatively define a usage angle, and a storage state, where said connecting end of said backrest connecting member is pivoted to be adjacent to said first bed frame to move said backrest driving assembly closer to said backrest frame, and where said backrest driving assembly and said backrest frame cooperatively define a storage angle smaller than said usage angle.

2. The foldable bed as claimed in claim 1, wherein said backrest connecting member is concave with a middle portion thereof being away from said first bed frame.

3. The foldable bed as claimed in claim 1, wherein said backrest driving assembly includes: a backrest drive motor that is pivotally connected to said connecting end of said backrest connecting member; and a backrest drive rod that telescopically extends from said backrest drive motor and that is pivotally connected to said backrest frame.

4. The foldable bed as claimed in claim 1, wherein said backrest driving assembly has a gravity center that is located adjacent to said connecting end of said backrest connecting member.

5. The foldable bed as claimed in claim 1, wherein: said backrest connecting member further has an abutting portion that is adjacent to said pivotal end; and when said bed frame unit is in the bed flat state and said backrest actuating mechanism is in the usage state, said abutting portion of said backrest connecting member abuts against said first bed frame to limit downward pivoting movement of said connecting end of said backrest connecting member away from said first bed frame; and when said backrest actuating mechanism is in the storage state, said abutting portion of said backrest connecting member is away from said first bed frame.

6. The foldable bed as claimed in claim 1, wherein: said first bed frame subunit further includes a first fixing frame that is mounted to said first bed frame; said backrest frame and said first fixing frame are arranged in the lengthwise direction; and said backrest frame is connected to said first fixing frame, and is pivotable relative to said first fixing frame and said first bed frame.

7. The foldable bed as claimed in claim 1, wherein: said second bed frame subunit includes a second bed frame that is disposed on said support unit, a second fixing frame that is mounted to said second bed frame, a leg frame that is pivotally connected to said second fixing frame, and a foot frame that is pivotally connected to said leg frame and that is opposite to said second fixing frame; and when said bed frame unit is in the bed flat state, said second bed frame subunit is switchable between a flat state, where said second fixing frame, said leg frame, and said foot frame are flat in the lengthwise direction, and a bent state, where said leg frame is pivoted upwardly relative to said second fixing frame.

8. The foldable bed as claimed in claim 7, wherein: said driving unit further includes a leg frame actuating mechanism that is connected to said second bed frame subunit, said leg frame actuating mechanism including a leg frame driving assembly that is pivotally connected between said second bed frame and said foot frame; and when said bed frame unit is in the bed flat state, said leg frame driving assembly is operable to lift said foot frame, thereby driving said leg frame to pivot upwardly relative to said second fixing frame, and switching said second bed frame subunit to the bent state.

9. The foldable bed as claimed in claim 1, wherein: when said bed frame unit is in the bed flat state and said backrest actuating mechanism is in the usage state, said backrest actuating mechanism has a usage height in a top-bottom direction perpendicular to the lengthwise direction; when said backrest actuating mechanism is in the storage state, said backrest actuating mechanism has a storage height in the top-bottom direction perpendicular to the lengthwise direction; and said usage height is greater than said storage height.

10. The foldable bed as claimed in claim 1, wherein: when said bed frame unit is in the bed flat state and said backrest actuating mechanism is in the usage state, said backrest actuating mechanism protrudes outwardly from said first bed frame in a top-bottom direction perpendicular to the lengthwise direction; and when said bed frame unit is in the bed folded state and said backrest actuating mechanism is in the storage state, said backrest actuating mechanism is disposed within a space defined by said first bed frame subunit and said second bed frame subunit.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Other features and advantages of the disclosure will become apparent in the following detailed description of the embodiment(s) with reference to the accompanying drawings. It is noted that various features may not be drawn to scale.

[0011] FIG. 1 is a perspective view of an embodiment of a foldable bed according to the disclosure illustrating a bed frame unit of the foldable bed in a bed flat state.

[0012] FIG. 2 is a side view of the embodiment illustrating the bed frame unit in the bed flat state.

[0013] FIG. 3 is a bottom perspective view of the embodiment illustrating the bed frame unit in the bed flat state.

[0014] FIG. 4 is a perspective view of the embodiment illustrating a first bed frame subunit of the bed frame unit in a supporting state and a second bed frame subunit of the bed frame unit in a bent state.

[0015] FIG. 5 is a schematic side view taken from FIG. 4.

[0016] FIG. 6 is a perspective view of the embodiment illustrating the first bed frame subunit and the second bed frame subunit being stacked on one another when the bed frame unit is in a bed folded state.

[0017] FIG. 7 is a side view taken from FIG. 6.

[0018] FIG. 8 is a fragmentary schematic view of the embodiment illustrating a backrest actuating mechanism of the foldable bed in a usage state when the bed frame unit is in the bed flat state.

[0019] FIG. 9 is a fragmentary schematic view of the embodiment illustrating the backrest actuating mechanism in a storage state when the bed frame unit is in the bed folded state.

DETAILED DESCRIPTION

[0020] Before the disclosure is described in greater detail, it should be noted that where considered appropriate, reference numerals or terminal portions of reference numerals have been repeated among the figures to indicate corresponding or analogous elements, which may optionally have similar characteristics.

[0021] It should be noted herein that for clarity of description, spatially relative terms such as top, bottom, upper, lower, on, above, over, downwardly, upwardly and the like may be used throughout the disclosure while making reference to the features as illustrated in the drawings. The features may be oriented differently (e.g., rotated 90 degrees or at other orientations) and the spatially relative terms used herein may be interpreted accordingly.

[0022] Referring to FIGS. 1 to 3, an embodiment of a foldable bed according to the disclosure includes a support unit 2, a bed frame unit 3, and a driving unit 5.

[0023] The support unit 2 includes a plurality of outer bed legs 21 and a plurality of intermediate bed legs 22. In this embodiment, the number of the outer bed legs 21 is four, and the number of the intermediate bed legs 22 is two. However, the number of the outer bed legs 21 and the number of the intermediate bed legs 22 are not limited hereto.

[0024] Referring to FIG. 4 in combination with FIGS. 1 and 3, the bed frame unit 3 is disposed on the support unit 2 and includes a first bed frame subunit 31 and a second bed frame subunit 32 being connected to the first bed frame subunit 31. The second bed frame subunit 32 is pivotable relative to the first bed frame subunit 31 to fold the bed frame unit 3 from a bed flat state (as shown in FIGS. 1 and 2), where the first bed frame subunit 31 and the second bed frame subunit 32 are arranged in a lengthwise direction (Y), to a bed folded state (as shown in FIGS. 6 and 7), where the first bed frame subunit 31 is stacked on top of the second bed frame subunit 32.

[0025] The first bed frame subunit 31 is switchable between a lying state (as shown in FIGS. 1 and 2) and a supporting state (as shown in FIGS. 4 and 5), and includes a first bed frame 311 that is disposed on the support unit 2, a first fixing frame 314 that is mounted to the first bed frame 311, and a backrest frame 315 that is pivotable relative to the first bed frame 311. In this embodiment, the first bed frame 311 has a first frame body 312 and a first fixed seat 313 mounted to the first frame body 312. The backrest frame 315 and the first fixing frame 314 are arranged in the lengthwise direction (Y). The backrest frame 315 is connected to the first fixing frame 314, and is pivotable relative to the first fixing frame 314 and the first bed frame 311. The backrest frame 315 has a backrest frame body 316 and a first pivot seat 317 mounted to the backrest frame body 316.

[0026] The second bed frame subunit 32 includes a second bed frame 321 that is disposed on the support unit 2 and that is pivotally connected to the first bed frame subunit 31, a second fixing frame 324 that is mounted to the second bed frame 321, a leg frame 325 that is pivotally connected to the second fixing frame 324, and a foot frame 326 that is pivotally connected to the leg frame 325 and that is opposite to the second fixing frame 324. In this embodiment, when the bed frame unit 3 is in the bed flat state, the second bed frame subunit 32 is switchable between a flat state (as shown in FIGS. 1 and 2), where the second fixing frame 324, the leg frame 325, and the foot frame 326 are flat and arranged in the lengthwise direction (Y), and a bent state (as shown in FIGS. 4 and 5), where the leg frame 325 is pivoted upwardly relative to the second fixing frame 324. The second bed frame 321 has a second frame body 322 and a second fixed seat 323 mounted to the second frame body 322. The foot frame 326 has a foot frame body 327 and a second pivot seat 328 mounted to the foot frame body 327.

[0027] As shown in FIGS. 3 and 5, two outer bed legs 21 are respectively and detachably mounted to two corners of the first bed frame 311 distal from the second bed frame 321, and the other two outer bed legs 21 are respectively and detachably mounted to two corners of the second bed frame 321 distal from the first bed frame 311. The two intermediate bed legs 22 are respectively and detachably mounted to the first bed frame 311 and the second bed frame 321, and are spaced apart from each other in a widthwise direction (X) perpendicular to the lengthwise direction (Y). The two intermediate bed legs 22 are misaligned from each other in the widthwise direction (X).

[0028] As shown in FIGS. 3, 6, and 7, because the second bed frame subunit 32 is pivotable relative to the first bed frame subunit 31, when the outer bed legs 21 and the intermediate bed legs 22 are detached from the first bed frame subunit 31 and the second bed frame subunit 32, the second bed frame subunit 32 and the first bed frame subunit 31 are allowed to be stacked on one another.

[0029] The driving unit 5 includes a backrest actuating mechanism 51 that is connected to the first bed frame subunit 31, and a leg frame actuating mechanism 52 that is connected to the second bed frame subunit 32.

[0030] Referring to FIG. 8 in combination with FIGS. 1 to 5, the backrest actuating mechanism 51 is operable to drive the backrest frame 315 so that the first bed frame subunit 31 is switchable between the lying state (as shown in FIGS. 1 and 2) and the supporting state (as shown in FIGS. 4 and 5). In FIG. 8, for clarity, only the backrest actuating mechanism 51, the first fixed seat 313, and the first pivot seat 317 are shown in solid lines while the remaining components are shown in phantom lines.

[0031] As shown in FIGS. 3, 5, and 8, the backrest actuating mechanism 51 includes a backrest connecting member 511 and a backrest driving assembly 515.

[0032] The backrest connecting member 511 has a pivotal end 512 that is pivotally connected to the first fixed seat 313 of the first bed frame 311, a connecting end 513 that is opposite to the pivotal end 512, and an abutting portion 514 that is adjacent to the pivotal end 512. The backrest connecting member 511 is concave with a middle portion thereof being away from the first bed frame 311.

[0033] The backrest driving assembly 515 is pivotally connected between the backrest frame 315 and the connecting end 513 of the backrest connecting member 511. The backrest driving assembly 515 is operable for driving the backrest frame 315 to pivot relative to the first bed frame 311, thereby switching the first bed frame subunit 31 from the lying state to the supporting state. The backrest driving assembly 515 includes a backrest drive motor 516 that is pivotally connected to the connecting end 513 of the backrest connecting member 511, and a backrest drive rod 517 that telescopically extends from the backrest drive motor 516 and that is pivotally connected to the first pivot seat 317 of the backrest frame 315. The backrest driving assembly 515 has a gravity center that is located adjacent to the connecting end 513 of the backrest connecting member 511. For example, the backrest drive motor 516 is disposed closer to the connecting end 513 of the backrest connecting member 511 than the backrest drive rod 517.

[0034] When the bed frame unit 3 is in the bed flat state, the backrest actuating mechanism 51 is operable to convert between a usage state (as shown in FIG. 8), where a weight of the backrest driving assembly 515 drives the connecting end 513 of the backrest connecting member 511 to pivot downwardly away from the first bed frame 311, and where the backrest driving assembly 515 and the backrest frame 315 cooperatively define a usage angle (1), and a storage state (as shown in FIG. 9), where the connecting end 513 of the backrest connecting member 511 is pivoted to be adjacent to the first bed frame 311 so as to move the backrest driving assembly 515 to be closer to the backrest frame 315, and where the backrest driving assembly 515 and the backrest frame 315 cooperatively define a storage angle (2) smaller than the usage angle (1). In FIG. 9, for clarity, only the backrest actuating mechanism 51, the first fixed seat 313, and the first pivot seat 317 are shown in solid lines, and the remaining components are shown in phantom lines.

[0035] As shown in FIG. 8, when the bed frame unit 3 is in the bed flat state and the backrest actuating mechanism 51 is in the usage state, the abutting portion 514 of the backrest connecting member 511 abuts against the first bed frame 311 to limit downward pivoting movement of the connecting end 513 of the backrest connecting member 511 away from the first bed frame 311, thereby supporting the backrest driving assembly 515 to drive pivoting movement of the backrest frame 315 relative to the first bed frame 311. To convert the backrest actuating mechanism 51 from the usage state to the storage state, the backrest driving assembly 515 is lifted to drive upward pivoting movement of the connecting end 513 of the backrest connecting member 511 toward the first bed frame 311, thereby moving the abutting portion 514 of the backrest connecting member 511 away from the first bed frame 311. As shown in FIG. 9, when the backrest actuating mechanism 51 is in the storage state, the abutting portion 514 of the backrest connecting member 511 is away from the first bed frame 311, and the backrest driving assembly 515 is moved closer to the backrest frame 315 such that the storage angle (2) is smaller than the usage angle (1).

[0036] As shown in FIGS. 2, 3, and 5, the leg frame actuating mechanism 52 includes a leg frame driving assembly 521 that is pivotally connected between the second bed frame 321 and the foot frame 326. When the bed frame unit 3 is in the bed flat state, the leg frame driving assembly 521 is operable to lift the foot frame 326, thereby driving the leg frame 325 to pivot upwardly relative to the second fixing frame 324, and switching the second bed frame subunit 32 from the flat state (as shown in FIGS. 1 and 2) to the bent state (as shown in FIGS. 4 and 5). The leg frame driving assembly 521 includes a lifting leg motor 522 that is pivotally connected to the second fixed seat 323, and a lifting leg rod 523 that telescopically extends from the lifting leg motor 522 and that is pivotally connected to the second pivot seat 328.

[0037] As shown in FIGS. 1, 6, and 7, in use, the bed frame unit 3 is transformable between the bed flat state (as shown in FIG. 1) and the bed folded state (as shown in FIGS. 6 and 7). When the bed frame unit 3 is in the bed flat state, the first bed frame subunit 31 is flexibly switchable between the lying state and the supporting state, and the second bed frame subunit 32 is flexibly switchable between the flat state and the bent state. When the bed frame unit 3 is in the bed folded state, the outer bed legs 21 and the intermediate bed legs 22 are detached from the first bed frame subunit 31 and the second bed frame subunit 32, so that the first bed frame subunit 31 and the second bed frame subunit 32 are stacked on one another and the backrest actuating mechanism 51 is converted to the storage state.

[0038] As shown in FIGS. 3 and 8, when the bed frame unit 3 is in the bed flat state and the backrest actuating mechanism 51 is in the usage state, due to a weight of the backrest drive motor 516, the connecting end 513 of the backrest connecting member 511 is driven to pivot downwardly away from the first bed frame in 311. As a result, the backrest actuating mechanism 51 protrudes outwardly from the first bed frame 311 in a top-bottom direction (Z) perpendicular to the lengthwise direction (Y) and has a usage height (H1) in the top-bottom direction (Z) greater than a storage height (H2) of the backrest actuating mechanism 51 in the storage state (as shown in FIG. 9), such that the usage angle (1) defined between the backrest driving assembly 515 and the backrest frame 315, for example, may be greater than 20 degrees, and the backrest driving assembly 515 may effectively drive pivoting movement of the backrest frame 315 relative to the first bed frame 311.

[0039] As shown in FIG. 9, when the bed frame unit 3 is in the bed folded state, and the backrest actuating mechanism 51 is converted to the storage state, because the connecting end 513 of the backrest connecting member 511 is pivoted to be adjacent to the first bed frame 311 to move the backrest driving assembly 515 closer to the backrest frame 315, the storage angle (2) defined by the backrest driving assembly 515 and the backrest frame 315 is smaller than the usage angle (1) and may be, for example, smaller than 5 degrees. Thus, when the backrest actuating mechanism 51 is in the storage state, the backrest actuating mechanism 51 has the storage height (H2) that is smaller than the usage height (H1) and that significantly reduces in the top-bottom direction (Z). As a result, when the bed frame unit 3 is in the bed folded state and the backrest actuating mechanism 51 is in the storage state, the backrest actuating mechanism 51 is disposed within a space defined by the first bed frame subunit 31 and the second bed frame subunit 32, such that the storage height (H2) of the backrest actuating mechanism 51 is limited between the first bed frame subunit 31 and the second bed frame subunit 32, thereby effectively reducing an overall height of the foldable bed in the top-bottom direction (Z).

[0040] The foldable bed of the disclosure has the following advantages.

[0041] 1. Because the backrest connecting member 511 is pivotally connected to the first bed frame 311, and because the backrest driving assembly 515 is pivotally connected between the backrest frame 315 and the backrest connecting member 511, when the bed frame unit 3 is in the bed flat state and the backrest actuating mechanism 51 is in the usage state, the weight of the backrest driving assembly 515 drives downward movement of the backrest driving assembly 515, such that the usage angle (1) defined by the backrest driving assembly 515 and the backrest frame 315 is enlarged to facilitate the backrest driving assembly 515 to drive pivoting movement of the backrest frame 315 relative to the first bed frame 311. When the bed frame unit 3 is in the bed folded state and the backrest actuating mechanism 51 is in the storage state, by virtue of the backrest driving assembly 515 being moved closer to the backrest frame 315, the storage angle (2) defined by the backrest driving assembly 515 and the backrest frame 315 is reduced, and the storage height (H2) of the backrest actuating mechanism 51 is effectively reduced. As a result, a dimension of the foldable bed may be effectively decreased to lower the transport cost, which is beneficial to network-based sale of the foldable bed.

[0042] 2. By virtue of the backrest connecting member 511 being designed to be concave, the backrest connecting member 511 may be prevented from interfering with other components when the backrest actuating mechanism 51 is in the storage state, and the backrest connecting member 511 may be prevented from interfering with backrest drive motor 516 when the backrest actuating mechanism 51 is in the usage state.

[0043] 3. By virtue of the gravity center of the backrest driving assembly 515 being located adjacent to the connecting end 513 of the backrest connecting member 511, the weight of the backrest driving assembly 515 may effectively drive the connecting end 513 of the backrest connecting member 511 to pivot downwardly away from the first bed frame 311.

[0044] 4. When the bed frame unit 3 is in the bed flat state and the backrest actuating mechanism 51 is in the usage state, abutment of the abutting portion 514 of the backrest connecting member 511 against the first bed frame 311 limits downward pivoting movement of the connecting end 513 of the backrest connecting member 511 away from the first bed frame 311, thereby supporting the backrest driving assembly 515 to drive the pivoting movement of the backrest frame 315 relative to the first bed frame 311.

[0045] 5. When the bed frame unit 3 is in the bed folded state and the backrest actuating mechanism 51 is in the storage state, because the backrest actuating mechanism 51 is disposed within a space defined by the first bed frame subunit 31 and the second bed frame subunit 32, the storage height (H2) of the backrest actuating mechanism 51 is limited between the first bed frame subunit 31 and the second bed frame subunit 32 so as to reduce the dimension of the foldable bed, thereby lowering the transport cost.

[0046] In the description above, for the purposes of explanation, numerous specific details have been set forth in order to provide a thorough understanding of the embodiment(s). It will be apparent, however, to one skilled in the art, that one or more other embodiments may be practiced without some of these specific details. It should also be appreciated that reference throughout this specification to one embodiment, an embodiment, an embodiment with an indication of an ordinal number and so forth means that a particular feature, structure, or characteristic may be included in the practice of the disclosure. It should be further appreciated that in the description, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of various inventive aspects; such does not mean that every one of these features needs to be practiced with the presence of all the other features. In other words, in any described embodiment, when implementation of one or more features or specific details does not affect implementation of another one or more features or specific details, said one or more features may be singled out and practiced alone without said another one or more features or specific details. It should be further noted that one or more features or specific details from one embodiment may be practiced together with one or more features or specific details from another embodiment, where appropriate, in the practice of the disclosure.

[0047] While the disclosure has been described in connection with what is (are) considered the exemplary embodiment(s), it is understood that this disclosure is not limited to the disclosed embodiment(s) but is intended to cover various arrangements included within the spirit and scope of the broadest interpretation so as to encompass all such modifications and equivalent arrangements.