FOLDABLE BED FRAME HAVING PIVOTALLY CONNECTED FRAME UNITS

• US 20160316921A1
• Filed: 05/02/2016
• Published: 11/03/2016
• Est. Priority Date: 04/30/2015
• Status: Active Application

• Current Assignee: Inno-Sports Co., Ltd.
• Original Assignee: Inno-Sports Co., Ltd.
• Inventors: Choi, Kwanjun
• Granted Patent: US 10,285,506 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A47C 17/68 only the legs being foldable
• CPC Class Codes: A47C 17/70 the bed frame being foldable about a horizontal axis
• CPC Class Codes: A47C 19/024 Legs
• CPC Class Codes: A47C 19/025 Direct mattress support frames, Cross-bars
• CPC Class Codes: A47C 19/122 foldable head to foot only
• CPC Class Codes: A47C 19/128 only legs being foldable

Abstract

A foldable bed frame includes frame units pivotally connected to each other by one or more connecting assemblies. A frame unit includes upper and lower frames, legs or links connected to the upper and lower frames, and limiting pieces disposed on the upper and lower frames to limit rotation angles or directions of the legs or links. A connecting assembly includes middle leg(s) or middle bar(s), and connecting pieces. When folded, the bed frame is compact. When unfolded, the bed frame provides storage spaces underneath, and facilitates positioning and holding of bed shirts/sheets.

Claims

1. A foldable bed frame, comprising:

a first frame unit and a second frame unit pivotally connected to each other at proximal sides thereof, wherein each frame unit comprises;

an upper frame;

a lower frame disposed below the upper frame when the foldable bed frame is unfolded;

a plurality of vertical links comprising first and second vertical links disposed on left and right sides of the frame unit, and at or adjacent to the proximal side of the frame unit, wherein each of the first and second vertical links is pivotally connected to the upper and lower frames; and

a plurality of limiting pieces disposed on the upper frame and the lower frame to limit rotation angles or directions of the vertical links; and

a connecting assembly disposed between the first and second frame units and pivotally connected to the first frame unit and the second frame unit, the connecting assembly comprising a middle leg assembly and a plurality of connecting pieces,

wherein the middle leg assembly comprises;

a top lateral bar having first and second ends;

first and second middle legs coupled to the first and second ends of the top lateral bar at a lower side of the top lateral bar, wherein each middle leg comprises an inner tube and an outer tube slidably coupled to each other; and

first and second pivotal links coupled to the first and second ends of the top lateral bar and pivotally connected to the upper frames of the first and second frame units; and

wherein each of the connecting pieces has one end pivotally connected to the first or second middle leg, and the other end pivotally connected to the lower frame of the first or second frame unit at a location where a corresponding vertical link is connected to the lower frame.

2. The foldable bed frame of claim 1, wherein the first frame unit is substantially symmetric to the second frame unit.

3. The foldable bed frame of claim 1, wherein for each of the first and second middle legs, the middle leg assembly further comprises one or more of the following:

a seat disposed at an upper end of the outer tube, the seat comprising a sleeve coupled to the upper end of the outer tube and a clamping slot formed above the sleeve and corresponding to the top lateral bar; and

a connector coupled to the top lateral bar, and connecting the inner tube with the top lateral bar.

4. The foldable bed frame of claim 3, wherein the sleeve is formed with U-shaped grooves on opposite side walls.

5. The foldable bed frame of claim 3, wherein:

the lower side of the top lateral bar is formed with a slot adjacent to each of the first and second ends of the top lateral bar to receive the connector; and

the connector comprises a shaft inserted into the inner tube of the middle leg and fasteners to affix the connector with the top lateral bar and affix the inner tube with the connector.

6. The foldable bed frame of claim 1, wherein the inner and outer tubes of each middle leg are slidably coupled to each other by a sliding slot formed on the inner tube along a longitudinal direction of the inner tube, and a pin disposed at an upper end of the outer tube and extended through the sliding slot of the inner tube.

7. The foldable bed frame of claim 1, wherein for each of the first and second middle legs:

the middle leg assembly further comprises a seat disposed at an upper end of the outer tube, the seat comprising a sleeve coupled to the upper end of the outer tube and a clamping slot formed above the sleeve and corresponding to the top lateral bar; and

the seat, the inner tube and the outer tube are coupled to each other by a sliding slot formed on the inner tube along a longitudinal direction of the inner tube, and a pin disposed at the upper end of the outer tube, wherein the pin extends through the sliding slot of the inner tube and the sleeve of the seat.

8. The foldable bed frame of claim 1, wherein for each of the first and second middle legs:

the lower side of the top lateral bar is provided or formed with a pivotal piece at each of the first and second ends of the top lateral bar; and

an upper end of the inner tube is provided or formed with a pair of pivotal pieces,

wherein the pivotal piece of the top lateral bar is disposed between the pair of pivotal pieces of the inner tube and connected thereto.

9. The foldable bed frame of claim 1, wherein the middle leg assembly further comprises a middle lateral bar connecting the first and second middle legs.

10. The foldable bed frame of claim 1, wherein the one end of each connecting piece is pivotally connected to the outer tube of the first or second middle leg.

11. The foldable bed frame of claim 1, further comprises first and second elastic members connecting the corresponding proximal sides of the lower frames of the first and second frame units.

12. The foldable bed frame of claim 1, wherein:

each of the first and second frame units further comprises first and second side legs disposed on the left and right sides of the first or second frame unit, and at or adjacent to a distal side of the first or second frame unit, wherein each of the first and second side legs is pivotally connected to the upper and lower frames of the first or second frame unit; and

the plurality of limiting pieces comprises limiting pieces disposed on the upper and lower frames to limit rotation angles or directions of the first and second side legs.

13. The foldable bed frame of claim 12, wherein each of the first and second frame units further comprises a lateral bar disposed between the first and second side legs and connecting the first side leg with the second side leg.

14. The foldable bed frame of claim 1, wherein for each of the first and second frame units, the plurality of vertical links further comprises third and fourth vertical links disposed on the left and right sides of the first or second frame unit, and at or adjacent to a distal side of the first or second frame unit.

15. A foldable bed frame, comprising:

a first frame unit and a second frame unit pivotally connected to each other at proximal sides thereof, wherein each frame unit comprises;

an upper frame comprising first and second upper longitudinal bars, and first and second upper lateral bars disposed between the first and second upper longitudinal bars;

a lower frame disposed below the upper frame when the foldable bed frame is unfolded, the lower frame comprising first and second lower longitudinal bars, and first and second lower lateral bars disposed between the first and second lower longitudinal bars;

a plurality of side legs, each having a top end pivotally connected to an inner side of the first or second upper longitudinal bar, and a middle portion pivotally connected to the corresponding first or second lower longitudinal bar; and

a plurality of limiting pieces disposed on lower sides of the first and second upper longitudinal bars and on upper sides of the first and second lower longitudinal bars to limit rotation angles or directions of the plurality of side legs;

a first connecting assembly and a second connecting assembly disposed on left and right sides of the foldable bed frame and between the first and second frame units, wherein each of the first and second connecting assemblies comprises;

a middle leg or a middle bar;

an upper connecting piece disposed on the middle leg or the middle bar, and pivotally connected to the upper longitudinal bars of the first and second frame units; and

a lower connecting piece disposed on the middle leg or the middle bar, and pivotally connected to the lower longitudinal bars of the first and second frame units,

wherein the upper connecting piece is longer than the lower connecting piece.

16. The foldable bed frame of claim 15, wherein each of the first and second connecting assemblies further comprises one or more of the following:

an upper stopping piece disposed or formed at a lower side of the upper connecting piece below the upper longitudinal bars of the first and second frame units, wherein the upper stopping piece has a length shorter than a distance between pivotal points at which the upper longitudinal bars are connected to the upper connecting piece; and

a lower stopping piece disposed or formed at an upper side of the lower connecting piece above the lower longitudinal bars of the first and second frame units, wherein the lower stopping piece has a length shorter than a distance between pivotal points at which the lower longitudinal bars are connected to the lower connecting piece.

17. The foldable bed frame of claim 15, wherein the upper frame of the first or second frame unit further comprises one or more of the following:

one or more upper longitudinal bars disposed between the first and second upper longitudinal bars, and connected to the first and second upper lateral bars; and

one or more upper lateral bars disposed between the first and second upper lateral bars and connected to the first and second upper longitudinal bars.

18. The foldable bed frame of claim 17, wherein the one or more upper longitudinal bars and the one or more upper lateral bars crisscross each other.

19. The foldable bed frame of claim 15, wherein:

for each frame unit, the plurality of side legs comprises a first side leg disposed on a left side of the frame unit, and a second side leg disposed on a right side of the frame unit; and

for each connecting assembly, the upper connecting piece is disposed at a top end of the middle leg and the lower connecting piece is disposed at a middle portion of the middle leg.

20. The foldable bed frame of claim 15, wherein:

for each frame unit, the plurality of side legs comprises first and third side legs disposed on a left side of the frame unit, and second and fourth side legs disposed on a right side of the frame unit; and

for each connecting assembly, the upper connecting piece is disposed at a top end of the middle bar and the lower connecting piece is disposed at a lower end of the middle bar, wherein the middle bar, the upper connecting piece and the middle connecting piece collectively form a substantially “

”

shaped structure.