U.S. patent application number 16/798560 was filed with the patent office on 2021-08-26 for folding bed frame.
This patent application is currently assigned to Zenithen USA LLC d/b/a Z Company, Zenithen USA LLC d/b/a Z Company. The applicant listed for this patent is Zenithen USA LLC d/b/a Z Company, Zenithen USA LLC d/b/a Z Company. Invention is credited to Andrew David Frankel, Shi-Ping Zheng, Tian-Xia Zheng.
Application Number | 20210259430 16/798560 |
Document ID | / |
Family ID | 1000004785758 |
Filed Date | 2021-08-26 |
United States Patent
Application |
20210259430 |
Kind Code |
A1 |
Frankel; Andrew David ; et
al. |
August 26, 2021 |
FOLDING BED FRAME
Abstract
A folding bed frame that includes four vertical faces: two ends
and two sides. Each face is formed by two slanting bars that are
cross hinged together. The upper and lower ends of adjacent
slanting bar sets are hinged together to form the whole frame
structure. The two vertical faces are corresponding or symmetric,
and each includes two sets of slanting bar sets that are hinged
through to middle sections of the upper and lower angle plates.
There is a vertical rod part on the cross-hinging point of each set
of slanting bar set, and its movable position is set by a slide
bushing. There is a barrier that is on the cross-hinging point of
one of the slanting bars. The barrier can contact the upper part
vertical bar, and form two support points with the slide bushing
for the vertical bar part.
Inventors: |
Frankel; Andrew David;
(Yorba Linda, CA) ; Zheng; Shi-Ping; (Fuzhou,
CN) ; Zheng; Tian-Xia; (Fuzhou, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Zenithen USA LLC d/b/a Z Company |
Upland |
CA |
US |
|
|
Assignee: |
Zenithen USA LLC d/b/a Z
Company
|
Family ID: |
1000004785758 |
Appl. No.: |
16/798560 |
Filed: |
February 24, 2020 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A47C 19/126 20130101;
A47C 19/14 20130101 |
International
Class: |
A47C 19/14 20060101
A47C019/14; A47C 19/12 20060101 A47C019/12 |
Foreign Application Data
Date |
Code |
Application Number |
Feb 21, 2020 |
CN |
202020191538.6 |
Claims
1. A folding bed frame including: four vertical faces, namely, two
ends and two sides; each face is formed by two slanting bars that
are cross hinged together; the upper and lower ends of adjacent
slanting bar sets are hinged together to form the whole frame
structure; the two vertical faces are corresponding or symmetric,
and each includes two sets of slanting bar sets that are hinged
through to middle sections of the upper and lower angle plates;
there is a vertical rod part on the cross-hinging point of each set
of slanting bar set, and its movable position is set by a slide
bushing; between the two crossed slanting bars, the bar that is
close to the vertical bar is the primary slanting bar, and the bar
that is far from the vertical bar is the secondary slanting bar;
the upper end of the vertical bar part is connected to a connection
plate; a horizontal bar is hinged to each of the two horizontal
directions of the connection plate; the other end of each
horizontal bar is hinged to the upper angle plate of the vertical
face of the same side; its characteristics are: there is a barrier
that is fixed on the cross hinging point of the primary slanting
bar; and the barrier can contact the upper part vertical bar, and
form two support points with the slide bushing for the vertical bar
part.
2. The folding bed of claim 1, wherein the barrier forms an inverse
L-shaped or U-shaped structure; the two ends are riveted on the
surface of the primary slanting bar; and the upward arch can
contact the upper part of the vertical bar.
3. Per claim 2, the folding bed frame has the following
characteristics: one side of the barrier contacts the upper part of
the vertical bar part, while the other side contacts the secondary
slanting bar. The lower part facing the secondary slanting bar has
a thickened step section. When the frame is in open position, the
step section can support the lower side of the secondary slanting
bar.
4. The folding bed of claim 3, wherein the barrier is molded with
plastic; THE thickness direction has reinforcing ribs, and the
length direction has embedded metal bars; the length of the metal
bars crosses over the vertical bar part and the secondary bar.
5. The folding bed of claim 4, wherein the cross section of the
barrier is a rectangular, squared U shape with the opening facing
downwards; and wherein when after the metal bars are embedded
through the opening, they are riveted by two rivets on the barrier
step section to form a thickened section facing down.
Description
BACKGROUND OF THE INVENTION
Field of the Invention
[0001] This invention is to folding furniture category.
Specifically, it refers to a type of improvement for a folding bed
frame.
Technical Background
[0002] Current camp beds evolved from folding chairs. Their
structure includes a bed fabric and frame. For example, Chinese
patent CN02228784.1 provides a type of camp bed with a frame
relationship as shown in FIG. 8. It is divided into four vertical
faces: two heads (as conventionally called) and two sides. Each
face is formed by two slanting bars that are cross hinged together.
The upper and lower ends of adjacent slanting bar sets are hinged
together to form the whole frame structure. The two side vertical
faces are symmetric, and each is formed by two sets of slanting
bars cross hinged at the upper and lower angle plates. There is a
movable positioning vertical bar part at the cross-hinging point of
each set of slanting bars. The upper end of the vertical bar part
is connected to a connection plate. A horizontal bar is hinged in
each of the two horizontal directions of the connection plate. The
other end of each horizontal bar is hinged to the upper angle plate
of the vertical face on the same side. The horizontal bars of the
two side vertical faces form a balance to support the bed fabric.
The configuration of the two side horizontal bars allows the bed
fabric to be flatter. It also resolves the problem with the bed
fabric between the two crossed bars of the slanting bar sets
sagging when bearing weight. However, when the bed fabric bears
weight, the four horizontal bars are pulled by the inward
stretching force, thus causing the connection plate location to
have significant inward retraction and deformation, which affects
its sleeping comfort. An objective of this invention is to promote
even support of the bed fabric.
SUMMARY OF THE INVENTION
[0003] A primary goal of this invention is to provide a folding bed
frame that can prevent the upper section of the vertical bar from
retracting inwards.
[0004] One technical proposal of the invention is achieved as
follows:
[0005] A folding bed frame includes four vertical faces: two ends
and two sides. Each face is formed by two slanting bars that are
cross-hinged together. The upper and lower ends of adjacent
slanting bar sets are hinged together to form the whole frame
structure. The two vertical faces are corresponding or symmetric,
and each includes two sets of slanting bar sets that are hinged
through to middle sections of the upper and lower angle plates.
There is a vertical rod part on the cross-hinging point of each set
of slanting bar set, and its movable position is set by a slide
bushing. Between the two crossed slanting bars, the bar that is
closer to the vertical bar is the primary slanting bar, and the bar
that is farther from the vertical bar is the secondary slanting
bar. The upper end of the vertical bar part is connected to a
connection plate. A horizontal bar is hinged to each of the two
horizontal directions of the connection plate. The other end of
each horizontal bar is hinged to the upper angle plate of the
vertical face of the same side. Its characteristics are that there
is a barrier that is fixed on the cross hinging point of the
primary slanting bar. The barrier can contact the upper part
vertical bar, and form two support points with the slide bushing
for the vertical bar part.
[0006] The barrier forms an inverse L-shaped or U-shaped structure.
The two ends are riveted on the surface of the primary slanting
bar. Its upward arch can contact the upper part of the vertical
bar.
[0007] One side of the barrier contacts the upper part of the
vertical bar part, while the other side contacts the secondary
slanting bar. The lower part facing the secondary slanting bar has
a thickened step section. When the frame is in its open position,
the step section can support the lower side of the secondary
slanting bar.
[0008] The barrier is molded plastic. In its thicker direction it
has reinforcing ribs, and its elongated direction has embedded
metal bars. The length of the metal bars crosses over the vertical
bar part and the secondary bar.
[0009] The cross section of the barrier is a rectangular ".PI."
(Squared U shaped) with the opening facing downward. After the
metal bars are embedded through the opening, they are riveted by
two rivets on the barrier step section to form a thickened section
facing down.
[0010] This invention uses the barrier on the slanting bars to
enhance the horizontal support for the vertical bars from a
traditional single-point support by slide bushing to two-point
support. This can effectively prevent the defect of the upper part
of a vertical bar retracting inwardly due to weight. In addition,
the inner side of the barrier is supported by the other slanting
bar of the slanting bar set. This enhances the connectivity between
the two slanting bars of a slanting bar set, as well as increases
the support for the vertical bar part.
BRIEF DESCRIPTION OF THE DRAWINGS
[0011] FIG. 1 is an illustration of the folding bed frame.
[0012] FIG. 2 shows an enlarged image of selection A from FIG.
1.
[0013] FIG. 1 is an illustration of the upward view of the folding
bed frame.
[0014] FIG. 4 shows a zoomed image of selection B from FIG. 3.
[0015] FIG. 5 is an illustration of the side view of the folding
bed frame.
[0016] FIG. 6 illustrates a detailed illustration of the
barrier.
[0017] FIG. 7 is an illustration of the folded state of the folding
bed frame.
[0018] FIG. 8 is an illustration of existing, prior art
technology.
[0019] Similar reference characters denote corresponding features
consistently throughout the attached drawings. Namely, in the
drawings the following reference numbers refer to the following
part: [0020] 1--slanting bar set [0021] 11--primary slanting bar
[0022] 12--secondary slanting bar [0023] 2--upper angle plate
[0024] 3--lower angle plate [0025] 4--slide bushing [0026]
5--vertical bar [0027] 51--connection plate [0028] 52--horizontal
bar [0029] 6--barrier [0030] 61--upward arch [0031] 62--step
section [0032] 63--thickened section [0033] 64--reinforcing rib
[0034] 65--metal bar [0035] X--vertical faces of the two ends
[0036] Y--vertical faces of the two sides
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT(S)
[0037] Referring now to FIG. 1 to FIG. 7, a folding bed frame is
shown that includes four vertical faces: two ends and two sides, as
seen in the vertical faces of the two ends X and the vertical faces
of the two sides Y. Each vertical face has a slanting bar set 1
that is formed by two slanting bars cross-hinged together. The
upper and lower ends of adjacent slanting bar sets are hinged
together to form the whole frame structure. In other words, the
upper and lower ends of the slanting bars are hinged to the upper
angle plate 2 and the lower angle plate 3 to form the whole
connected frame structure. The two vertical faces are corresponding
or are symmetric, and each includes two slanting bars sets 1 that
are hinged through to middle sections of the upper and lower angle
plates 2 and 3. There is a vertical rod part on the cross hinging
point of each set of slanting bar set 1, and its movable position
is set by a slide bushing 4. For an accurate description and
convenient differentiation, between the two crossed slanting bars,
the bar that is close to the vertical bar 5 is the primary slanting
bar 11, and the bar that is far from the vertical bar is the
secondary slanting bar 12. The upper end of the vertical bar 5 is
connected to a connection plate 51. A horizontal bar 52 is hinged
to each of the two horizontal directions of the connection plate
51. The other end of each horizontal bar 52 is hinged to the upper
angle plate 3 of the vertical face of the same side. The horizontal
bar 52 parallel to the vertical faces of the two sides Y tightly
stretches the bed fabric. This is the current technology section.
Because the vertical bar 5 solely relies on slide bushing 4 for
positioning, when the bed fabric bears weight, the horizontal force
causes the upper section of vertical bar 5 to retract inwardly and
the bed fabric to become loose. The following structure is used to
resolve this problem.
[0038] There is a barrier 6 that is fixed on the cross-hinging
point of the primary slanting bar 11. The barrier 6 can contact the
upper part vertical bar 5, and form two support points with the
slide bushing 4 for the vertical bar part. More specifically,
barrier 6 forms an inverse L-shaped or U-shaped structure. The two
ends are riveted on the surface of the primary slanting bar 11. Its
upward arch 61 can contact the upper part of the vertical bar 5.
Here, barrier 6 forming an inverse L-shaped or U-shaped structure
is just a figurative expression. It can resemble an inverse
triangle, an inverse V-shaped, or a curve.
[0039] Furthermore, one side of the barrier 6 contacts the upper
part of the vertical bar part 5, while the other side contacts the
secondary slanting bar 12. The lower part facing the secondary
slanting bar 12 has a thickened step section 62. When the frame is
in open position, the step section 62 can support the lower side of
the secondary slanting bar 12, and form a connected and
weight-bearing support. In addition, barrier 6 also leverages its
interconnection with the secondary slanting bar 12 to obtain
support on the back side and enhance the ability of the upward arch
61 to withstand inward retraction. The position of barrier 6
occupies the spaces between the vertical bar 5 and the secondary
slanting bar 12. Also, the step section 62 forms the thickened
section 63 in the lower section, and it occupies the space in the
primary slanting bar 11 when folded and the secondary slanting bar
12 when opened as shown in FIG. 7.
[0040] As shown in FIG. 6 and FIG. 7, the barrier 5 is ideally an
inverse L-shape. This guarantees a higher upper arch 61, and a
longer flat straight edge that enhances the support for the
secondary slanting bar 12 as well as obtain support from the
secondary bar. The barrier 6 is molded plastic. The thickness
direction has reinforcing ribs 64, and the length direction has
embedded metal bars 65. The length of the metal bars 65 crosses
over the vertical bar 5 and the secondary bar 12. This increases
the strength of the barrier 6 that is molded with plastic and
decreases friction between metal. The cross section of the barrier
6 is a rectangular ".PI." with the opening facing downward. After
the metal bars 65 are embedded through the opening, they are
riveted by two rivets on the barrier step section to form a
thickened section 63 facing down. This has the benefits of
reinforcing the thick area while allowing the thin area does not
occupy extra space.
* * * * *