U.S. patent application number 12/596567 was filed with the patent office on 2010-05-13 for basket for refrigerator.
This patent application is currently assigned to LG Electronics Inc.. Invention is credited to Byeong-Gyu Kang, Jae-Youl Lee, Jeong-Ho Shin, Ki-Hoon Song.
Application Number | 20100117502 12/596567 |
Document ID | / |
Family ID | 39875612 |
Filed Date | 2010-05-13 |
United States Patent
Application |
20100117502 |
Kind Code |
A1 |
Kang; Byeong-Gyu ; et
al. |
May 13, 2010 |
Basket for refrigerator
Abstract
The structure for adjusting height of the shelf for the
refrigerator according to the embodiment of the present invention
is configured to gradually lift and lower the shelf by means of
pressing the height adjusting element provided at the lower side of
the shelf, and the shelf is preferably prevented from being
suddenly dropped while adjusting height of the shelf.
Inventors: |
Kang; Byeong-Gyu; (Changwon
City, KR) ; Lee; Jae-Youl; (Gimhae-si, JP) ;
Shin; Jeong-Ho; (Changwon City, KR) ; Song;
Ki-Hoon; (Suwon-si, KR) |
Correspondence
Address: |
BIRCH STEWART KOLASCH & BIRCH
PO BOX 747
FALLS CHURCH
VA
22040-0747
US
|
Assignee: |
LG Electronics Inc.
Seoul
KR
|
Family ID: |
39875612 |
Appl. No.: |
12/596567 |
Filed: |
April 7, 2008 |
PCT Filed: |
April 7, 2008 |
PCT NO: |
PCT/KR08/01944 |
371 Date: |
January 13, 2010 |
Current U.S.
Class: |
312/408 ;
211/134 |
Current CPC
Class: |
F25D 25/02 20130101;
F25D 25/04 20130101 |
Class at
Publication: |
312/408 ;
211/134 |
International
Class: |
F25D 25/02 20060101
F25D025/02; A47F 5/00 20060101 A47F005/00 |
Foreign Application Data
Date |
Code |
Application Number |
Apr 20, 2007 |
KR |
10-2007-0038716 |
Claims
1. A structure for adjusting height of a shelf for a refrigerator,
comprising: a rail which is installed at a rear wall of a chamber
of the refrigerator; a shelf which vertically moves along the rail;
an adjusting element which is connected to a lower side of the
shelf and is accommodated in the rail to adjust height of the
shelf, wherein the adjusting element translates in a direction
perpendicular to the moving direction of the shelf.
2. The structure according to claim 1, further comprising: support
elements which are protruded from an inner side of the rail with a
predetermined gap to support an end of the adjusting element; and
guide elements which are protruded from an inner side of the rail
with a predetermined gap opposite to the support element, and guide
the movement of an end of the adjusting element.
3. The structure according to claim 2, wherein the adjusting
element includes: a mount which is provided at a rear end of the
shelf; a releasing cam which moves along the space between the
support element and the guide element; a releasing bar which
perforates the mount to be connected to the releasing cam; an
operating bar which is connected to the other end of the releasing
bar; and an elastic element which is connected to the releasing bar
to be disposed at a front of the mount.
4. The structure according to claim 3, further comprising: a push
member provided to the operating bar.
5. The structure according to claim 3, wherein the elastic element
is repeatedly compressed and restored while the adjusting element
translates.
6. The structure according to claim 3, wherein an incised portion
is formed at a front of the rail, and the releasing bar is moved
along the incised portion.
7. The structure according to claim 3, wherein the support element
is composed of a slanted surface which is oblique in a vertical
direction, and a horizontal portion on which the releasing cam is
seated.
8. The structure according to claim 3, wherein the releasing cam is
configured to descent along a lower slanted surface of the guide
element, or to ascent along an upper slanted surface of the guide
element.
9. A structure for adjusting height of a shelf for a refrigerator,
comprising: a rail which is installed at a rear wall of a
refrigerating chamber or a freezing chamber; a shelf which
vertically moves along the rail; a mount which is extended at a
rear end of the shelf to keep the shelf horizontal; and an
adjusting element which perforates the mount and an end of thereof
is inserted into an inner side of the rail, and which is provided
to adjust height of the shelf, wherein a moving path which
comprises a height adjusting path inclined in a vertical direction
and a fixing path horizontally extended in a back-and-forth
direction, the height adjusting path and the fixing path being
alternately connected, is formed at the inner side of the rail, and
wherein an end of the adjusting element is vertically moved along
the moving path.
10. The structure according to claim 9, further comprising: a
fixing end provided at one side of the adjusting element; and an
elastic element interposed between the fixing end and the
mount.
11. The structure according to claim 10, wherein the elastic
element is configured to be compressed while an end of the
adjusting element is raised along the height adjusting path, and
configured to be returned to its original state while the end of
the adjusting element is moved forward along the fixing path.
12. The structure according to claim 9, wherein front ends of the
rail are bent toward each other in order to prevent the adjusting
element from departing from the rail.
13. The structure according to claim 9, wherein the adjusting
element is provided at a lower side of the shelf and is bent in a
shape the same as a side and front circumference of the shelf.
14. The structure according to claim 13, wherein a push member is
provided at a position of the adjusting element extending along a
front circumference of the shelf.
15. The structure according to claim 14, wherein the shelf is
lowered for one time by the operation of pushing and releasing the
push member.
16. The structure according to claim 9, wherein the adjusting
element configured to be forwardly moved after being retreated by
the operation of lifting the shelf.
17. A refrigerator having a structure for adjusting height of a
shelf therefor, comprising: a body in which a refrigerating chamber
or a freezing chamber is provided; a rail which is provided at a
rear wall of the refrigerating chamber or the freezing chamber; a
shelf which is movably connected to a front of the rail, and of
which at a rear end a mount is extended; an adjusting element which
is provided at a lower portion of the shelf, and of which an end is
received in the inner side of the rail to adjust height of the
shelf by moving in a back-and-forth direction.
18. The refrigerator according to claim 17, wherein a plurality of
support elements which are composed of a slanted surface and a
horizontal portion, and a plurality of guide elements protruded at
a surface opposite to the support element are vertically arranged
in the rail at regularly spaced intervals.
19. The refrigerator according to claim 18, wherein each of the
guide elements is disposed between the adjacent support
elements.
20. The refrigerator according to claim 18, wherein the adjusting
element includes: a releasing cam received in a moving path formed
between the support elements and the guide elements; a releasing
bar extended in a forward direction, one end of the releasing bar
being connected to the releasing cam; a fixing end provided at a
predetermined portion of the releasing bar; and an elastic element
interposed between the mount and the fixing end.
21. The refrigerator according to claim 20, wherein the moving path
is configured that a height adjusting path inclined in a vertical
direction and a fixing path horizontally extended in a
back-and-forth direction are alternated.
22. The refrigerator according to claim 20, wherein when the shelf
is lowered, the elastic element is compressed as the releasing cam
is retreated along the fixing path, and wherein the elastic element
is restored to its original state as the releasing cam is forwardly
moved along the height adjusting path.
23. The refrigerator according to claim 17, wherein the mount is
extended from the bottom of the shelf and is bent toward the
rail.
24. The refrigerator according to claim 17, wherein the mount is
extended from the rear end of the shelf to the lower direction with
a predetermined length, so that the mount is in a close contact
with the front of the rail.
25. The refrigerator according to claim 17, further comprising: a
push member provided at the front of the adjusting element.
Description
TECHNICAL FIELD
[0001] This document relates to a refrigerator and a structure for
adjusting height of a shelf therefor.
BACKGROUND ART
[0002] According to a conventional structure for adjusting height
of a shelf for a refrigerator, there are two types of structures,
i.e., a mount type structure that both side ends of the shelf is
placed on a plurality of mounts protruded from both side walls of
the refrigerator in a back-and-forth direction, and a cantilever
type structure that a plurality of holes are formed in a rear side
surface of a refrigerating or freezing chamber and a fastening
element protruded from a rear end of the shelf is inserted in the
hole. The mount may be injection-molded so that some of the inner
side wall of the refrigerator is protruded, or a separate mount may
be installed at the inner side wall.
[0003] Specifically, in case of the mount type structure where the
mount supports both side edges of the shelf, the shelf has to be
separated from the refrigerator and seated on another mount
disposed at different height levels in order to change the location
of the shelf.
[0004] FIG. 1 shows a shelf supporting structure of a conventional
cantilever type in a partial perspective view, and FIG. 2 shows a
shelf supporting structure of a cantilever type in a side
cross-sectional view.
[0005] Referring to FIGS. 1 and 2, the conventional cantilever type
structure includes a rail 1 fixed at the rear wall of the
refrigerator, and a fastening element provided at the rear end of
the shelf 3.
[0006] Specifically, a plurality of perforated holes 2 are formed
in the rail 1 at regularly spaced intervals. And, the fastening
element is composed of a mount 5 which is attached to the rear end
of the shelf 3, and a fastening hook 4 which is bent from the upper
end of the mount 5 and is inserted into the perforated hole. The
mount 5 is downwardly extended for a predetermined length in order
to support the turning moment due to foodstuffs placed on the
shelf, and the fastening hook 4 is bent and formed in order not to
be detached from the perforated hole 2.
[0007] According to the cantilever type structure. In case that the
user wishes to change the height of shelf 3 on which foodstuffs are
placed, the foodstuffs are removed from the shelf 3 and the
fastening hook 4 is separated from the perforated hole 2 of the
rail 1 and then the fastening hook 4 is hooked in the perforated
hole 2 at the desired height.
[0008] In other words, in case of the conventional cantilever type
structure, it is inconvenient for the user, especially for
housewives, to separate and re-install the shelf 3.
[0009] In addition, the foodstuffs have to be removed from the
shelf in order to change the location of the shelf according to
both type structures, and therefore it is not easy to make good use
of space in the refrigerator because it is almost impossible to
freely change the location of the shelf.
DISCLOSURE OF INVENTION
Technical Problem
[0010] The present invention is proposed to resolve the above
problems, and a object of the present invention is to provide a
refrigerator and a structure for adjusting height of a shelf
therefor, which allow the height of the shelf to be adjusted even
though foodstuffs are placed on the shelf.
[0011] Also, another object of the present invention is to provide
a refrigerator and a structure for adjusting height of a shelf
therefor, which allow the height of the shelf to be adjusted
without separating the shelf therefrom.
[0012] Also, further another object of the present invention is to
provide a refrigerator and a structure for adjusting height of a
shelf therefor, which may increase the convenience of use for
housewives as the height of the shelf can be adjusted by a small
amount of force.
Technical Solution
[0013] To achieve these objects and other advantages and in
accordance with the purpose of the invention, as embodied and
broadly described herein, a structure for adjusting height of a
shelf for a refrigerator includes a rail which is installed at a
rear wall of a chamber of the refrigerator; a shelf which
vertically moves along the rail; an adjusting element which is
connected to a lower side of the shelf and is accommodated in the
rail to adjust height of the shelf, wherein the adjusting element
translates in a direction perpendicular to the moving direction of
the shelf.
[0014] In another aspect of the present invention, there is
provided a structure for adjusting height of a shelf for a
refrigerator, including: a rail which is installed at a rear wall
of a refrigerating chamber or a freezing chamber; a shelf which
vertically moves along the rail; a mount which is extended at a
rear end of the shelf to keep the shelf horizontal; and an
adjusting element which perforates the mount and an end of thereof
is inserted into an inner side of the rail, and which is provided
to adjust height of the shelf, wherein a moving path which
comprises a height adjusting path inclined in a vertical direction
and a fixing path horizontally extended in a back-and-forth
direction, the height adjusting path and the fixing path being
alternately connected, is formed at the inner side of the rail, and
wherein an end of the adjusting element is vertically moved along
the moving path.
[0015] Also, in further another aspect of the present invention,
there is provided a refrigerator having a structure for adjusting
height of a shelf therefor, including: a body in which a
refrigerating chamber or a freezing chamber is provided; a rail
which is provided at a rear wall of the refrigerating chamber or
the freezing chamber; a shelf which is movably connected to a front
of the rail, and of which at a rear end a mount is extended; an
adjusting element which is provided at a lower portion of the
shelf, and of which an end is received in the inner side of the
rail to adjust height of the shelf by moving in a back-and-forth
direction.
ADVANTAGEOUS EFFECTS
[0016] According to the above described refrigerator and the above
described structure for adjusting height of the shelf for the
refrigerator, it is possible to adjust height of the shelf without
removing foodstuffs placed on the shelf.
[0017] Also, the convenience of use may be improved, since height
of the shelf is adjusted without separating the shelf
therefrom.
[0018] Also, while adjusting height of the shelf, it is possible to
prevent foodstuffs placed on the shelf from suddenly dropping due
to the weight thereof.
[0019] Also, it is possible for children or housewives to safely
adjust height of the shelf, since the height of the shelf can be
adjusted by a small amount of force.
BRIEF DESCRIPTION OF THE DRAWINGS
[0020] FIG. 1 is a partial perspective view showing a shelf
supporting structure of a conventional cantilever type.
[0021] FIG. 2 is a side cross-sectional view of a shelf supporting
structure of the cantilever type.
[0022] FIG. 3 is a perspective view showing an inner structure of a
refrigerator having a structure for adjusting height of a shelf
according to a preferred embodiment of the present invention.
[0023] FIG. 4 is an exploded perspective view of a structure for
adjusting height of a shelf according to a preferred embodiment of
the present invention.
[0024] FIG. 5 is a side cross-sectional view of a rail taken along
I-I' in FIG. 4.
[0025] FIG. 6 is a horizontal cross-sectional view of a rail taken
along II-II' FIG. 5.
[0026] FIG. 7 is a vertical cross-sectional view of a rail taken
along III-III' in FIG. 5.
[0027] FIG. 8 is a side cross-sectional view showing a structure
for adjusting height of a shelf for a refrigerator according to
another preferred embodiment of the present invention.
MODE FOR THE INVENTION
[0028] Hereinafter, specific embodiments of the present invention
will be explained in detail with reference to the accompanying
drawings. However, the scope of the present invention is not
restricted thereto, and any one other than the following
embodiments can be easily proposed by adding, changing and deleting
another constituents within a range not to impair the scope of the
present invention.
[0029] FIG. 3 shows an inner structure of a refrigerator having a
structure for adjusting height of a shelf according to a preferred
embodiment of the present invention in a perspective view.
[0030] Referring to FIG. 3, the refrigerator 100 according to a
preferred embodiment of the present invention includes a body 110
in which a refrigerating chamber 111 and a freezing chamber 112 are
provided, a refrigerating chamber door 120 which is pivotably
provided at both sides of the body 110 to selectively open/close
the refrigerating chamber 111, and a freezing chamber door 130
selectively opening/closing the freezing chamber 112.
[0031] Specifically, the present embodiment is explained with
reference to a bottom-freezer type refrigerator, in which a
refrigerating chamber 111 is disposed above a freezing chamber 112,
however it is noted that the scope of the present invention is not
limited to the bottom-freezer type refrigerator.
[0032] Meanwhile, according to the bottom-freezer type
refrigerator, the freezing chamber door 130 may be a drawer type
door which is pushed/pulled in and out in a back-and-forth
direction. And, a storage box 140 is provided at a rear surface of
the freezing chamber door 130, and the storage box 140 is moved
together with the freezing chamber door 130. And, the storage box
140 may be separated from the freezing chamber door 130.
[0033] Also, an ice maker 150 may be provided at one side of the
freezing chamber 112, and the ice maker 150 may be installed at the
refrigerating chamber 111 or the refrigerating chamber door 120
depending on types of the ice maker.
[0034] Also, a plurality of door baskets 121 may be provided at a
rear surface of the refrigerating chamber door 120. And, a
plurality of shelves 20 for receiving foodstuffs are vertically
arranged in the refrigerating chamber 111, and the location of the
shelf 20 is determined by a rail 40 fixed to the rear wall of the
refrigerating chamber 111. And, the height of the shelf 20 may be
adjusted along the rail 40. This structure for adjusting height
will be explained in detail with reference to the accompanying
drawings.
[0035] Also, at least one storage box 160 for storing foodstuffs
can be installed in the refrigerating chamber 111, and it can be a
drawer type. And, a duct for supplying cold air is provided at a
rear center of the refrigerating chamber.
[0036] FIG. 4 shows a structure for adjusting height of a shelf
according to a preferred embodiment of the present invention in an
exploded perspective view.
[0037] Referring to FIG. 4, a structure for adjusting height of a
shelf for a refrigerator according to a preferred embodiment of the
present invention includes a shelf 20, a mount 32 protruded from a
rear end of the shelf 20, a rail 40 attached to a rear wall inside
the chamber, and an adjusting element 30 provided at a bottom
surface of the shelf 20 to selectively lift/drop the shelf.
[0038] Specifically, the mount 32 is extended from a rear end of
the shelf 20 to the lower side and is bent, and thus, it is tightly
contacted to a front surface of the rail 40. Therefore, the shelf
20 is prevented from being crooked by the moment due to self weight
of the shelf 20 and weight of the foodstuffs placed on the shelf
20.
[0039] Also, the rail 40 is vertically extended for a predetermined
length, and it is installed at a point corresponding to the mount
32. And, the shelf 20 may be installed one-by-one as the width of
the shelf 20 corresponds to that of the refrigerating chamber 111,
or a plurality of shelves 20, which are narrower, may be arranged
side-by-side. And, one shelf 20 or the plurality of shelves 20 may
be vertically installed at a predetermined interval. And, a pair of
rails 40 are provided for one shelf, and they support both side
ends of the shelf 20.
[0040] Meanwhile, a structure, which gradually lifts or drops the
shelf 20 by communicating with the adjusting element 30, is
provided in the rail 40, and this structure will be explained with
reference to the accompanying drawings.
[0041] Also, the adjusting element 30 is formed in the shape of a
letter "U," and is inserted in the rail 40, respectively.
Specifically, the adjusting element 30 includes a releasing bar 31
which is extended in a back-and-forth direction and an operating
bar 36 which connects both ends of the releasing bar 31, wherein
the operating bar 36 and the releasing bar 31 are formed by bending
one bar twice.
[0042] More specifically, an end of the releasing bar 31 is
respectively inserted into the rail 40, the operating bar 36 is
disposed at a bottom surface of a front end of the shelf 20.
Therefore, the user pushes the operating bar 36 by hand in order to
adjust height of the shelf 20. Here, in order to improve the
convenience of use, a separate push member 37 may be provided at
the approximate center of the operating bar 36. That is, the user
pushes the push member 37 by hand, instead of grabbing the
operating bar 36 by hand.
[0043] Also, a releasing cam 34, which vertically moves along the
moving path 46 (see FIG. 5) formed in the rail 30, is provided at
the end of the releasing bar 31. And, the releasing cam 34
laterally extended for a predetermined length at the end of the
releasing bar 31. And, a fixing end 34 is provided on the releasing
bar 31 at a location spaced apart from the releasing cam 34, and an
elastic element 33 such as a spring is provided between the
releasing cam 34 and the fixing end 35. Here, the elastic element
33 may be a tension spring. Therefore, the elastic element 33 is
compressed when the user presses the push member 37 or the
operating bar 36 to adjust height, and the adjusting element 30 is
returned to its original positioned by the restoring force of the
elastic element 33 when the force exerted on the push member 37 or
the operating bar 36 is released.
[0044] FIG. 5 shows a rail taken along I-I' illustrated in FIG. 4
in a side cross-sectional view, FIG. 6 shows a rail taken along
II'-II' illustrated in FIG. 5 in a horizontal cross-sectional view,
and FIG. 7 shows a rail taken along III-III' illustrated in FIG. 5
in a vertical cross-sectional view.
[0045] Referring to FIGS. 5 to 7, the rail 40 according to the
embodiment of the present invention includes a rail case 41 of
which a front is opened and the releasing cam 34 is moveably
received therein, a stopper 44 of which both sides of the front end
of the rail case 41 are bent toward each other, a guide element 43
protruded from the inner rear surface of the rail case 41 at
regularly spaced intervals, and a support element 42 protruded from
the rear surface of the stopper 44 at regularly spaced
intervals.
[0046] Specifically, the stopper 44 prevents the releasing cam 34
from being detached from the rail case 41 as the front end of the
rail case 41 is bent toward each other. And, ends of the stopper 44
are spaced apart from each other, and the releasing bar 31 is
vertically moved along the spaced apart portion. That is, the
spaced apart portion formed by the stopper 44 serves to guide the
elevation of the releasing bar 31.
[0047] Also, the moving path 46 of the releasing cam 34 is formed
by a support element 42 protruded from the rear surface of the
stopper 44, and a guide element 43 protruded from the inner rear
surface of the rail case 41.
[0048] Specifically, the moving path 46 is composed of a height
adjusting path 461 which is obliquely formed in a vertical
direction, a fixing path 462 which is formed in a back-and-forth
direction. And, the guide element 43 and the support element 42 are
formed at an appropriate position so that the height adjusting path
461 and the fixing path 462 are alternately formed.
[0049] Concretely, as a tip of the guide element 43 is disposed at
a concave portion of the support element 42, the moving path 46 is
formed in the shape of a letter "S." And, since the upper part of
the support element 42 constitutes a horizontal portion 45, the
releasing cam 34 may be horizontally moved. That is, the moving
path 46 is composed of a fixing path 462 which is flat in a
back-and-forth direction, and a height adjusting path 461 which is
obliquely formed in a vertical direction.
[0050] Meanwhile, the releasing bar 31 is inserted into the spaced
apart portion formed between the stoppers 44 as it perforates a
vertical surface of the mount 32. And, the elastic element 33 is
compressed and elongated by intervening between the fixing end 35
and the mount 32. And, in order to connect the shelf 20 to the rail
40, the releasing cam 34 is positioned at the upper end of the rail
40. In this state, if the shelf 20 is downwardly moved, the
releasing cam 34 is inserted into the moving path 46 formed at the
inner side of the rail 40.
[0051] The operation process of the structure for adjusting height
of the shelf will be explained.
[0052] First, in case of lifting the shelf 20, the user lifts the
shelf without using the adjusting element 30. And then, the
releasing cam 34 smoothly moved along the fixing path 462 and the
height adjusting path 461.
[0053] Specifically, the elastic element 33 is compressed as soon
as the releasing cam 34 is entered to an entry of the height
adjusting path 461 after being departed from the fixing path 462.
And, the elastic element 33 is continuously compressed while the
releasing cam 34 is raised along the height adjusting path 461.
And, the elastic element 33 is maximally compressed just when the
releasing cam 34 is positioned at the top of the height adjusting
path 461. And, the elastic element 33 is elongated by the restoring
force, and the releasing cam 34 is moved and seated on the
horizontal portion 45 of the support element 42 when the releasing
cam 34 is re-entered to the fixing path 462. And, the releasing cam
34 is tightly contacted to the bottom surface of the stopper
44.
[0054] As described in the above, the releasing cam 34 passes
through the fixing path 462 and the height adjusting path 461 in
sequence by lifting the shelf 20, and therefore the shelf 20 is
gradually raised. And, the adjusting element 30 is automatically
moved in a forward direction after it is backwardly moved even if
the user does not operate the adjusting element, while lifting the
shelf 20.
[0055] Meanwhile, in case of lowering the shelf 20, the user
presses the push member 37 or the operating bar 36 of the adjusting
element 30. And then, the releasing cam 34 is rearwardly moved and
is departed from the horizontal portion 45 od the support element
42, as the elastic element 33 is compressed. And, the releasing cam
34 is descended along the lower slanted surface of the guide
element 43. In this state, the shelf 20 is downwardly moved due to
the weight of the shelf 20 itself and the foodstuffs placed on the
shelf 20, even though the forced exerted on the adjusting element
30 is released. And, the releasing cam 34 is descended along the
height adjusting path 461, and the elastic element 33 is returned
to its original state. And, when the releasing cam 34 reaches the
fixing path 462, it is seated on the horizontal portion 45 of the
support element 42 by the restoring force of the elastic element
33.
[0056] The shelf 20 is gradually lowered by the above operation,
and the shelf 20 is prevented from being suddenly dropped due to
the weight of foodstuffs. Of course, the user repeats to press the
operating bar 36 or the push element 37 for the number
corresponding to the height P.
[0057] By means of the above operations, the adjusting element 30
is moved in a back-and-forth direction while the shelf 20 is
vertically moved.
[0058] FIG. 8 shows a structure for adjusting height of a shelf for
a refrigerator according to another preferred embodiment of the
present invention in a side cross-sectional view.
[0059] Referring to FIG. 8, technical constituents of an adjusting
element 50, i.e. a releasing bar 51, an elastic element 53 and a
fixing end 55, are the same as those of FIGS. 5 to 7, however the
shape of a mount 52 provided at the rear end of the shelf 20 is
different.
[0060] Specifically, the mount 52 according to the embodiment of
the present invention is vertically extended from the rear end of
the shelf 20 to the lower side and is tightly contacted to the
stopper 44 of the rail 40. The mount 52 shown in FIGS. 5 to 7 is
downwardly extended at a point spaced from the rear end of the
shelf 20, however the mount 52 according to the embodiment of the
present invention is downwardly extended from the rear end of the
shelf 20 and is not bent. Therefore, the rear surface of the shelf
20 and the rear surface of the mount 52 are tightly contacted to
the stopper 44 of the rail 40, thereby supporting the moment
exerted on the shelf 20.
* * * * *