Information
-
Patent Grant
-
6293418
-
Patent Number
6,293,418
-
Date Filed
Thursday, December 9, 199925 years ago
-
Date Issued
Tuesday, September 25, 200123 years ago
-
Inventors
-
Original Assignees
-
Examiners
Agents
-
CPC
-
US Classifications
Field of Search
US
- 220 6
- 220 7
- 220 324
- 220 326
-
International Classifications
-
Abstract
A collapsible container for storage and transport of produce or other goods is provided. In one embodiment, there is provided a five piece collapsible container with abase and four pivotable walls. Each of the four walls are outwardly collapsible to facilitate washing, and inwardly collapsible for compact storage. A latch mechanism is provided at each of the four points where two sidewalls abut each other providing a rigid assembled container. Attached to each latch mechanism is an actuating member with a grip. There is a latch mechanism on each side of each of two opposing sidewalls and latch actuators with grips that in close proximity to each other. The two grips allow the operator to disengage both latches integral with one side of the container with one hand. Similarly, when collapsing the container from assembled position, all four latches can be disengaged with each hand at respective pairs of grips. The latches are readily disengageable while providing a rigid assembled container.
Description
FIELD OF THE INVENTION
This invention relates to injection molded containers, and more particularly, to a collapsible container.
BACKGROUND OF THE INVENTION
Many transport and storage containers are known. Certain collapsible containers are used to transport goods such as produce and other perishables. Collapsible containers are commonly rectangular in shape with four sidewalls hinged to the base. More recent collapsible containers are injection molded plastic having sidewalls that collapse outwardly for cleaning and inwardly for storage. The sidewalls are latched in an assembled position and unlatched in a collapsed position.
A collapsable container is taught in WO Patent Application 99/32362. This container includes a base, two sidewalls, and two end walls. A pair of opposing sidewall edges and a pair of opposing end wall flanges are integral with the base and depend therefrom. The end walls are pivotablv attached to each wall flange and include defined comers at each side that abut the corresponding sidewalls. A pair of opposing sidewalls are pivotably attached to the sidewall edges. Each sidewall has a latch member at each lateral edge and each end wall has a pair of flanges with a latch receiver for capturing the latch member in the assembled position
Each latch member comprises a rigid, substantially parallelopiped body and a raised tooth at its distal end. The latch receiver includes an aperture to receive the latch member and a resiliently deformable latch hinge with a lip complementary to the raised tooth. The latch hinge has a resting position that locks the tooth and a flexed position to allow the latch member to pass through the aperture.
During assembly of the container from the collapsed position, each latch member is inserted in the corresponding aperture. As the latch member passes through the aperture, the raised tooth flexes the latch hinge upwards from the rest position, temporarily flexing the latch hinge into the flexed position. In the assembled position, the raised tooth is locked on the outside of the latch hinge as it returns to rest position. The lip of the latch hinge abuts the tooth to retain the latch member in the aperture. Users of the container will appreciate that the assembly can be somewhat awkward as each opposing end wall must be outwardly collapsed at a given angle greater than forty-five degrees to the end wall flange when the each sidewall is moved upright into the assembled position. Furthermore, both corresponding sidewalls must be held upright to latch one end wall into place.
Returning the container to the collapsed position from the assembled position, each latch hinge is moved to the flexed position, raising the lip of the latch hinge so it no longer abuts the tooth. Each latch hinge is flexed by depressing the latch hinge, typically with the thumb and forefinger of one hand, while forceably separating the corresponding sidewall with the other hand. The latch member and tooth can then be released from the latch receiver. Because of the configuration of the container, this procedure must be repeated for each latch receiver in order to release each latch member and finally collapse the container.
A second five piece collapsible container is manufactured by the Rehrig Pacific Company, 4011 East 26
th
Street, Los Angeles Calif. 90025. The latch member and latch receiver are geometrically different from the container in WO 99/32362 but are functionally similar. As a result, it still requires the same awkward procedure to collapse the container.
An example of a five piece container that is less awkward to collapse is produced by Wavin Plastics Limited. This container has sidewall edges that are joined in the comers, but unlike the collapsible container taught in WO 99/32362, can only be collapsed inwardly. There is also a latch member with a striker and a latch release member. The latch release member extends from the latch member to an activation point on the sidewall of the container. A second latch member is attached to the same sidewall. A second latch release member extends from the second latch member to a second activation point. The first and second activation points are in close proximity to each other so that both release members can be activated with one hand thereby releasing both associated latch members. Thus the container can be easily collapsed by actuating each of two sets of latch release members. Users of the container can appreciate that this latching mechanism and the assembled container is less rigid than the aforementioned collapsible containers. Further, because the container can only collapse inwardly, it is more difficult to clean.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a novel collapsible container that obviates or mitigates at least one of the disadvantages of the prior art.
In one aspect of the invention there is provided a collapsible container comprising a base, a pair of first opposing sidewalls pivotably attached to the base, and a pair of second opposing sidewalls pivotably attached to the base. The sidewalls have an assembled position, an outwardly collapsed position, and an inwardly collapsed position. A latch bar is attached to each end of each of the first opposing sidewalls and a latch member is attached to each end of the second opposing sidewalls. The latch member is biased to releasably capture a respective latch bar when the sidewalls are in the assembled position. A latch actuator is attached to each latch member and extends along a respective second sidewall to a grip. Each second sidewall has a pair of grips proximal to each other such that each pair of grips can be actuated with one hand to urge the latch member to release the latch bar.
A collapsible container for storage and transport of produce or other goods is provided. In one embodiment, there is provided a five piece collapsible container with a base and four pivotable walls. Each of the four walls are outwardly collapsible to facilitate washing, and inwardly collapsible for compact storage. A latch is provided at each of the four points where two sidewalls abut each other providing a rigid assembled container. Attached to each latch is an actuating member with a grip. The grips are paired to allow the operator to disengage both latches on one side of the container with one hand. Similarly, when collapsing the container from assembled position, all four latches can be disengaged with each hand at respective pairs of grips. The latches are readily disengageable and provide a rigid assembled container.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will now be explained, by way of example only, with reference to certain embodiments and the attached Figures in which:
FIG. 1
is a perspective view of the collapsible container with the sidewalls in the assembled position;
FIG. 2
is a perspective view of the collapsible container with the sidewalls in the outwardly collapsed position;
FIG. 3
is a perspective view of the collapsible container with the sidewalls in the inwardly collapsed position;
FIG. 4
is a perspective view of the two opposing long sidewalls of the collapsible container;
FIG. 5
is a perspective view of the two opposing short sidewalls of the collapsible container;
FIG. 6
is a partial perspective view of the corner of the collapsible container with the sidewalls in assembled position;
FIG. 7
is an exploded view of the latch mechanism including a catch bar, latch member, and latch actuator;
FIG. 8
is a partial top sectional view of the collapsible container in assembled position showing the catch bar, latch member, and latch actuator;
FIG. 9
is a partial top sectional view of the collapsible container with the latch member disengaged from the latch bar;
FIG. 10
is a side view of an alternative embodiment of the collapsible container;
FIG. 11
is a partial perspective view of an alternative embodiment of the collapsible container;
FIG. 12
is a side view of the collapsible container in a first alternative embodiment of the latch member and latch actuator;
FIG. 13
is a partial perspective view of the interior of the container showing the hinged catch of the latch member engaged with the catch aperture in a first alternative embodiment of the latch member and latch actuator;
FIG. 14
is a partial perspective view of the interior of the container showing the hinged catch of the latch member engaged with the catch aperture in the first alternative embodiment of the latch member and latch actuator;
FIG. 15
is a partial perspective view of the latch actuator and latch member in the first alternative embodiment of the latch member and latch actuator;
FIG. 16
is a partial perspective view of the latch actuator and latch member in the first alternative embodiment of the latch member and latch actuator;
FIG. 17
is a partial perspective view of an alternative embodiment of the latch actuator in the first alternative embodiment of the latch member and latch actuator;
FIG. 18
is a partial perspective view of the latch actuator in the first alternative embodiment of the latch member and latch actuator;
FIG. 19
is a side view of the collapsible container in a second alternative embodiment of the latch member and latch actuator;
FIG. 20
is a perspective view of the side of the collapsible container in the second alternative embodiment of the latch member and latch actuator;
FIG. 21
is a partial sectional view of section A—A of Figure J showing the second alternative embodiment of the latch member and latch actuator;
FIG. 22
is a partial sectional view of section A—A of Figure J showing the second alternative embodiment of the latch member and latch actuator;
FIG. 23
is a side view of the collapsible container in a third alternative embodiment of the latch member and latch actuator;
FIG. 24
is a partial perspective view of the interior of the container showing the hinged catch of the latch member engaged with the catch aperture in the third alternative embodiment of the latch member and latch actuator;
FIG. 25
is a partial perspective view of the latch actuator and latch member in the third alternative embodiment of the latch member and latch actuator;
FIG. 26
is a partial perspective view of the latch actuator and latch member in the third alternative embodiment of the latch member and latch actuator;
FIG. 27
is a partial perspective view of one side of the container showing an alternative embodiment of the hinge posts;
FIG. 28
is a partial perspective view of one side of the base of the container showing an alternative embodiment of the hangers;
FIG. 29
is a partial perspective view of one side and the base of the container showing the alternative embodiment of the hinge posts and hangers, and
FIG. 30
is a perspective view of container
20
in the outwardly collapsed position in an alternative embodiment of the tab configuration.
DETAILED DESCRIPTION OF THE INVENTION
Referring to
FIGS. 1-3
, a collapsible container in accordance with an embodiment of the invention is indicated generally at
20
. Container
20
is preferably used to transport and/or store products such as produce and other perishables. In a present embodiment, container
20
is injection-molded polymer such as polypropylene but other materials and forming processes can be used. Container
20
comprises a base
24
and four sidewalls
28
,
32
,
36
, and
40
that are pivotally attached to base
24
. The pivotal attachment will be discussed in greater detail below. Sidewalls
28
,
32
,
36
, and
40
have three positions. In the assembled position, shown in
FIG. 1
, container
20
is used for transporting or storing product, whereby all four sidewalls
28
,
32
,
36
, and
40
are substantially normal to base
24
. In the outwardly collapsed position, shown in
FIG. 2
, sidewalls
28
,
32
,
36
, and
40
are pivoted away from each other, and are substantially co-planar with base
24
, thus exposing the interior of the container to facilitate washing. In the inwardly collapsed position shown in
FIG. 3
, sidewalls
8
,
32
,
36
, and
40
are pivoted toward each other and are substantially parallel to base
24
thus facilitating the storage and transport of container
20
when it is empty.
In the present embodiment, base
24
is substantially planar with a rectangular footprint
44
. Base
24
has two opposing short sides
48
and
52
and two opposing long sides
56
and
60
. Each of short sides
48
and
52
include a base flange
64
and
68
, respectively, projecting normally from footprint
44
. Each side of base flanges
64
and
68
has comer sections
72
,
76
,
80
and
84
. respectively, that are normal to footprint
44
and integral with base flanges
64
and
68
and long sides
56
and
60
. Each of base ranges
64
and
68
have hinge posts
92
along the edge
96
for pivotal attachment to sidewalls
28
and
32
, respectively. Long sides
56
and
60
have hinge posts
100
for pivotal attachment with sidewalls
36
,
40
respectively.
As best seen in
FIG. 4
, a plurality of u-channel shaped hangers
108
on long sidewalls
36
and
40
are complementary with hinge posts
100
and pivotally attachable thereto. Long sidewalls
36
,
40
are substantially rectangular and are defined by short sides
120
and long sides
124
. Hangers
108
are attached to a contacting edge
132
on long sidewalls
36
,
40
. Each long sidewall
36
,
40
has a free edge
136
opposite contacting edge
132
. Nearest to free edge
136
and centred on sidewall
36
,
40
is a handle
140
for grasping container
20
. Each long sidewall
36
,
40
has tabs
148
and a rigid latch bar
152
protruding from each short side
120
. Latch bar
152
is substantially rectangular with a catch aperture
153
substantially centred therein and an outwardly bevelled free end
154
.
As best seen in
FIG. 5
, a plurality of u-channel shaped hangers
104
on short sidewalls
28
and
32
are complementary with hinge posts
92
and pivotally attached thereto. Short sidewalls
28
and
32
are substantially rectangular and are defined by short sides
112
and long sides
116
. Hangers
104
are attached to a contacting edge
134
on short sidewalls
28
,
32
. Each short sidewall
28
,
32
has a free edge
138
opposing contacting edge
134
. Nearest to free edge
138
and centred on sidewall
28
,
32
is a handle
142
for grasping container
20
. At each short side
112
of short sidewalls
28
,
32
, is a wall flange
156
protruding substantially normal to sidewall
28
,
32
. Integral with each wall flange
156
, is a tab receiving aperture
160
and a latch member
164
.
As best seen in
FIGS. 6 and 7
, latch member
164
has a resiliently deformable catch
168
which is biased to capture latch bar
152
by engaging with aperture
153
when sidewalls
28
,
32
,
36
,
40
are in the assembled position. Extending from each catch
168
is a substantially rectangular catch lever
172
. The free end of catch lever
172
has a substantially rectangular aperture
176
for attachment to a latch actuator
180
. In a present embodiment, latch actuator
180
has a pair of outwardly-turned feet
184
that are spring-biased to engage the edges of aperture
176
so that feet
184
are retained therein. A pair of legs
188
extend, respectively, from each foot
184
and merge at a body portion
192
. A grip
196
is integrally formed into actuator
180
on the end of body
192
opposite feet
184
. In the present embodiment, grip
196
is substantially arcuate with a raised lip
200
for grasping. When attached to latch member
164
, actuator
180
is substantially co-planar with short sidewalls
28
,
32
so that grip
196
is positioned near wall handle
142
. It can thus be seen that each latch actuator
180
is proximal to a corresponding latch actuator
180
of a corresponding latch member
164
on a same one of sidewalls
28
,
32
. Thus latch members
164
respective to corresponding latch actuators
180
are simultaneously releasable and the respective sidewall
28
,
32
is moveable to one of the collapsed positions.
While
FIGS. 6 and 7
show the latch between sidewalls
32
and
40
, it will now be apparent that the latch between the other sidewalls are similarly arranged. In particular, each short sidewall
28
,
32
has two actuators
180
with grips
196
in close proximity to each other, resulting in a single point of actuation for the pair of latch members
180
on each short sidewall
28
,
32
.
Each latch member
164
has two positions: a resting position and a flexed position. Referring now to
FIG. 8
, container
20
is in the assembled position and latch member
164
is in the resting position. Catch lever
172
is substantially normal to actuator
180
and catch
168
is engaged with latch bar
152
. In the flexed position, shown in
FIG. 9
, catch lever
172
is at an obtuse angle in relation to actuator
180
so that catch
168
is disengaged from catch bar
152
. Latch member
164
is movable from the rest position to the flexed position by urging grip
196
towards handle
142
. Upon releasing grip
196
, latch member
164
is biased towards the resting position.
The assembly of container
20
will now be described with reference to the foregoing and the attached Figures. To assemble container
20
from the outwardly collapsed position shown in
FIG. 2
, long sidewalls
36
,
40
are pivoted so that they are substantially normal to base
24
. Short sidewalls
28
,
32
are pivoted so that catch
168
abuts latch bar
152
. Maintaining long sidewalls
36
,
40
substantially normal to base
24
. external force is applied on short walls
28
,
32
so that they are directed inwardly and towards each other. When force is applied on short walls
28
,
32
, latch member
164
is urged from the resting position to the flexed position as catch
168
slides along bevelled free end
154
. Latch member
164
returns to the rest position when catch
168
engages catch aperture
153
. As will now be apparent, when each of the four catches
168
engage its respective aperture
153
, each sidewall
28
,
32
,
36
,
40
is substantially perpendicular to base
24
and container
20
is assembled as shown in FIG.
1
.
The collapsing of container
20
will now be described with reference to the foregoing and the attached Figures. To collapse container
20
from the assembled position shown in
FIG. 1
to the outwardly collapsed position shown in
FIG. 2
, both grips
196
on each short side
28
,
32
are urged towards each other by the operator. Typically the operator will pinch each grip
196
using the thumb and forefinger of each hand. Referring now to
FIG. 9
, latch actuator
180
is moved in the direction of arrow A, thereby applying a force on catch lever
172
and urging latch member
164
into the flexed position. As corresponding latch actuators
180
on each sidewall
28
,
32
are pinched, they are urged inwardly and towards each other. At the same time, latch members
164
are urged outwardly, into the flexed position, thereby disengaging catches
168
from their respective catch apertures
153
. At this point, each sidewall
28
,
32
is pivoted outwardly so that it is substantially co-planar with base
24
, in the outwardly collapsed position. Finally, long sidewalls
36
,
40
are then pivoted away from each other into the outwardly collapsed position.
It will now be apparent that both catches
168
on one sidewall
28
,
32
can be disengaged from their respective catch apertures
153
with one hand by urging the respective grips
196
together with one hand. Further, both catches
168
on both sidewalls
28
,
32
can be disengaged from their respective catch apertures
153
by urging each set of grips
196
on each wall
28
,
32
together using one hand on each set of grips
196
. Therefore, each wall
28
,
32
can be collapsed with each hand and both walls
28
,
32
can be collapsed substantially simultaneously.
To collapse container
20
from the assembled position shown in
FIG. 1
to the inwardly collapsed position shown in
FIG. 3
, both grips
196
on each short side
28
,
32
are urged towards each other by the operator. Referring to
FIGS. 8 and 9
, latch actuator
180
is moved in the direction of arrow A, thereby applying a force on catch lever
172
and urging latch member
164
into flexed position. When both latch actuators
180
on one of sidewalls
28
,
32
are urged towards each other, both latch members
164
are urged into the flexed position, thereby disengaging both catches
168
from their respective catch apertures
153
. When both catches
168
on sidewall
28
are disengaged from their respective catch apertures
153
, sidewall
28
is pivoted so that it is at an obtuse angle with base
24
. Similarly, both latch actuators
180
on opposing sidewall
32
are urged towards each other disengaging both catches
168
from their respective catch apertures
153
and sidewall
32
is pivoted so that it is at an obtuse angle with base
24
. Long sidewalls
36
,
40
are then pivoted inwardly, toward each other, so they are substantially parallel with base
24
. Short sidewalls
28
,
32
are then pivoted inwardly, toward each other so they are substantially parallel with base
24
.
It will be understood by those of skill in the art that the configurations of container
20
can be varied, and that such variations are within the scope of the invention. Referring now to
FIGS. 10 and 11
an alternative latch actuator
180
a
is shown on short side
28
. As best seen in
FIG. 10
, grips
196
from the previous embodiment can be eliminated and merged into a flexible single grip
196
a
proximal to handle
142
. By urging single (grip
196
a
towards handle
142
each foot
184
a
is drawn inwardly, thus releasing latch members
164
respective to each foot.
Referring now to
FIGS. 12-18
, an alternative latch member
164
b
and latch actuator
180
b
are shown. As best seen in
FIG. 13
, the resiliently deformable catch
168
of the first embodiment is replaced with a hinged catch
168
b
. Each hinged catch
168
b
has a first position whereby catch
168
b
is engaged with its respective catch aperture
153
b
, best seen in FIG.
14
. Each hinged catch
168
b
has a second position whereby catch
168
b
is pivoted away from catch aperture
153
b
, thereby disengaging catch aperture
153
b
. In addition, latch actuator
180
b
includes a pair of arms
185
b
which are joined to body
192
b
and oriented towards grip
196
b
, best seen in
FIGS. 15-18
. Arms
185
b
are spring-biased, having resting position that urges hinged catch
168
b
into the first position engaging catch aperture
153
b
. Arms
185
b
also have a flexed position when grip
196
b
is urged towards handle
142
, which urges hinged catch
168
b
into the second position thus disengaging catch
168
b
from its respective catch aperture
153
b.
Referring now to
FIGS. 19-22
, a second alternative latch member
164
c
and latch actuator
180
c
are shown. As best seen in
FIG. 21
, similar to hinged catch
168
b
of the previous embodiment, each hinged catch
168
c
has a first position whereby catch
168
c
is engaged with its respective catch aperture
153
c
. As best seen in
FIG. 22
, each hinged catch
168
c
has a second position whereby catch
168
c
is pivoted away from catch aperture
153
c
, thereby disengaging catch aperture
153
c
. As best seen in
FIG. 19
, each latch actuator includes a pair of splayed feet
184
c
. Splayed feet
184
c
each grasp their respective latch member
164
c
. In addition, latch actuator
180
c
includes a pair of arms
185
c
which are joined to body
192
c
and oriented towards feet
184
c
. Arms
185
c
are spring-biased, having a resting position that urges hinged catch
168
c
into the first position engaging catch aperture
153
c
. Arms
185
c
also have a flexed position when grip
196
c
is urged towards handle
142
, which urges hinged catch
168
c
into the second position thus disengaging catch
168
c
from its respective catch aperture
153
c
. The present embodiment also includes a single grip
197
c
, which interconnects each grip
196
c
. By urging single grip
197
c
towards handle
142
, feet
184
c
are urged inwardly, and thus releasing latch members
164
respective to each foot.
Referring now to
FIGS. 23-26
, a third alternative latch member
164
d
and latch actuator
180
d
are shown. As best seen in
FIG. 24
, similar to hinged catch
168
b
of the previous embodiment, each hinged catch
168
d
has a first position whereby catch
168
d
is engaged with its respective catch aperture
153
d
. Each hinged catch
168
d
has a second position whereby catch
168
d
is pivoted away from catch aperture
153
d
, thereby disengaging catch aperture
153
d
. In addition, latch actuator
180
d
includes a pair of arms
185
d
which are joined to body
192
d
at both ends. Arms
185
d
are spring-biased, having a resting position that urges hinged catch
168
d
into the first position engaging catch aperture
153
d
. Arms
185
d
also have a flexed position when grip
196
d
is urged towards handle
142
, which urges hinged catch
168
d
into the second position thus disengaging catch
168
d
from its respective catch aperture
153
d
.
Referring now to
FIGS. 10
,
27
-
29
, an alternative hinge post
92
e
,
100
e
and hanger
104
e
,
108
e
arrangement is shown. As best seen in
FIG. 27
, hinge posts
92
,
100
from the first embodiment can be eliminated and replaced by L-shaped hinge posts
92
e
. As shown in
FIG. 10
, three L-shaped hinge posts
92
e
project from contacting edge
134
and are centred on sidewall
32
. A split-cap L-shaped hinge post
93
e
projects from contacting edge
134
, proximal to each short side
112
of sidewall
32
. It will now be understood by those of skill in the art that each sidewall
28
,
36
,
40
can have L-shaped hinge posts
92
e
and split-cap L-shaped hinge posts
93
e
in similar arrangement to sidewall
132
. Hangers
104
,
108
from the first embodiment are replaced by hangers
104
e
, as shown in FIG.
28
. Each L-shaped hinge post
92
e
is received by complementary hanger
104
e
for pivotal attachment of sidewalls
28
,
32
,
36
,
40
as best shown in FIG.
29
. Similarly, each split-cap L-shaped hinge post
93
e
is received by a complimentary hanger
105
e
. Split-cap L-shaped hinge posts
93
e
interlock with apertures
106
e
on hangers
105
e
. The removal of split-cap L-shaped hinge posts
93
e
from respective hangers
105
e
is difficult thereby making the detachment of sidewalls
28
,
32
,
36
,
40
from base
24
difficult.
Referring now to
FIG. 30
, tabs
148
from the first embodiment can be replaced by a first tab
148
f
and a second tab
149
f
. First tab
148
f
is tapered inwardly as shown in FIG.
30
. The tapered first tab
148
f
reduces interference between short sidewalls
28
,
32
and long sidewalls
36
,
40
when assembling container
20
. The tapered first tab
148
f
allows the operator to pivot sidewalls
28
,
32
,
36
,
40
substantially normal to base
24
in any order when assembling container
20
from the collapsed positions.
While the embodiments discussed herein are directed to particular implementations of the present invention, it will be apparent that the subsets and variations to these embodiments are within the scope of the invention. For example, the sidewalls can differ in length from above or all four sidewalls can be equal in length. Alternatively, the container can have a cover to protect the goods stored therein. Also. the container can have a plurality of apertures for ambient circulation. The hinge configuration may differ. The shape of the grips may be varied such as including an aperture for inserting one's finger or thumb for actuating. The shape of the latch actuator may be changed or the latch member configuration can differ. Also, the latch catch and aperture can have different configurations to achieve the same function.
The present invention provides a novel collapsible container for transport or storage of products such as produce or other perishables. In one embodiment, there is provided a five piece collapsible container with a base and four sides that can be collapsed outwardly to facilitate washing and inwardly for compact storage. The container has latches and actuating members with grips that allow the operator to disengage both respective latches on one side of the container with one hand from an actuation point on the side of the container. Similarly, when collapsing the container from assembled position, all four latches can be disengaged with one hand at each actuation point. The latches are readily disengageable while providing a rigid assembled container. By providing a single point of actuation, both latches on one sidewall can be substantially simultaneously disengaged and the sidewall collapsed with one hand. Similarly, with one hand on each opposing sidewall, all four latches can be simultaneously disengaged and the sidewalls moved into their collapsed positions with each hand at each respective actuation point. Also, the container is readily collapsed for washing and storage thereby allowing processing by the operator. Also, less effort can be required as the latches are easily engaged and disengaged with reduced strain on the hand.
Claims
- 1. A collapsible container comprising:a base; a pair of first opposing sidewalls pivotably attached to said base; a pair of second opposing sidewalls pivotably attached to said base, said sidewalls having an assembled position, an outwardly collapsed position, and an inwardly collapsed position; a latch bar attached to each end of each of said first opposing sidewalls; a latch member attached to each end of said second opposing sidewalls, said latch member being biased to releasably capture a respective latch bar when said walls are in the assembled position; and a latch actuator attached to each said latch member and extending along a respective said second sidewall to a grip, each said second sidewall having a pair of said grips proximal to each other such that each pair of said (grips can be actuated with one hand to urge said latch member to release said latch bar.
- 2. The container in claim 1 wherein said latch bar comprises a substantially rectangular, protruding bar and a catch aperture for engaging said latch member.
- 3. The container in claim 2 wherein said latch member comprises a resiliently deformable catch to capture said latch bar with a substantially rectangular catch lever extending therefrom, said catch lever having an aperture for attachment to said latch actuator.
- 4. The container in claim 3 wherein said latch actuator comprises:a pair of outwardly turned feet to engage the edges of said aperture so that said feet are retained therein; a pair of legs extending, respectively from each of said feet; a body portion at which said legs merge; and said grip integrally formed with said actuator for grasping with a finger or hand.
- 5. The container in claim 4 wherein said grip is substantially semi-circular with a protruding semicircular lip for grasping with a finger.
- 6. The container in claim 4 wherein said grip comprises an aperture for inserting a finger to grasp and actuate said latch member.
- 7. The container in claim 2 wherein said latch member comprises: a resiliently deformable catch to capture said latch bar with a substantially rectangular catch lever extending therefrom, said catch lever having a pair of outwardly turned feet to engage said latch actuator.
- 8. The container in claim 7 wherein said latch actuator comprises:a substantially rectangular body portion; with an aperture, the edges of said aperture to be engaged with said feet; and said grip integrally formed with said actuator, opposing said aperture, for grasping with a finger or hand.
- 9. A latch for a collapsible container, said container having:a base; a pair of first opposing sidewalls pivotably attached to said base; a pair of second opposing sidewalls pivotably attached to said base, said sidewalls having an assembled position, an outwardly collapsed position and an inwardly collapsed position; said latch comprising: a latch bar attached to each end of said first pairs of opposing sidewalls; a latch member attached to each end of the other of said second opposing sidewalls for releasably capturing said latch bar; and a latch actuator attached to each said latch member and extending along a respective said second sidewall to an integrally formed grip, each said second sidewall having a pair of grips proximal to each other such that each pair of grips can be actuated with one hand to urge said latch member to release said latch bar.
- 10. A collapsible container comprising;a base and two pairs of opposing sidewalls pivotably attached to said base, said sidewalls having an assembled position, an outwardly collapsed position, and an inwardly collapsed position, said sidewalls having latches that releasably lock said sidewalls in said assembled position; and a latch actuator respective to each latch, each latch actuator being proximal to a corresponding latch actuator on a same one of said sidewalls such that latches respective to corresponding actuators are simultaneously releasable by a single hand and said same sidewall is movable to one of said collapsed positions.
- 11. The container in 10 wherein said latch comprises:a latch bar attached to each end of one of said pairs of opposing sidewalls; a latch member attached to each end of the other of said pairs of opposing sidewalls, for releasably capturing a respective latch bar when said sidewalls are in said assembled position.
- 12. The container in claim 11 wherein said latch bar, comprises a substantially rectangular, protruding bar and a catch aperture for engaging said latch member.
- 13. The container in claim 12 wherein said latch member comprises: a resiliently deformable catch to capture said latch bar with a substantially rectangular catch lever extending therefrom, said catch lever having a pair of outwardly turned feet to engage said Latch actuator.
- 14. The container in claim 13 wherein said latch actuator comprises:a substantially rectangular body portion; with an aperture, the edges of said aperture to be engaged with said feet; and a grip integrally formed with said actuator, opposing said aperture, for grasping with a finger or hand.
- 15. The container in claim 12 wherein said latch member comprises: a resiliently deformable catch to capture said latch bar with a substantially rectangular catch lever extending therefrom, said catch lever having an aperture for attachment to said latch actuator.
- 16. The container in claim 15 wherein said latch actuator comprises:a pair of outwardly turned feet to engage the edges of said aperture so that said feet are retained therein; a pair of legs extending, respectively, from each of said feet; a body portion at which said legs merge; and a grip integrally formed with said actuator for grasping with a finger or hand.
- 17. The container in claim 16 wherein said grip is substantially semi-circular with a protruding semi-circular lip for grasping with a finger.
- 18. The container in claim 16 wherein said grip comprises an aperture for inserting a finger to grasp and actuate said latch member.
- 19. A latch for a collapsible container, said container having:a base; a pair of first opposing sidewalls pivotably attached to said base; a pair of second opposing sidewalls pivotably attached to said base, said sidewalls having an assembled position, an outwardly collapsed position, and an inwardly collapsed position; said latch comprising: a latch bar attached to each end of said first pairs of opposing sidewalls; a latch member attached to each end of the other of said second opposing sidewalls for releasably capturing said latch bar; and a latch actuator attached to each said latch member and extending along a respective said second sidewall to an integrally formed grip, each said grip being actuatable simutaneously by a single hand to urge a pair of said latch members to release said latch bar.
- 20. The container in claim 10, wherein the container further comprises a grip coupled to both the corresponding actuators such that the latches respective to the corresponding actuators are substantially simultaneously releasable by actuating the grip with a single hand.
- 21. The container in claim 1, wherein the container further comprises a grip member attached to each of the grips proximal to each other such that the grip member can be actuated with one hand to substantially simultaneously urge each corresponding latch member to release each respective latch bar.
- 22. A collapsible container comprising;a base; two pairs of opposed sidewalls pivotally attached to the base; at least one pair of latch mechanisms, each latch mechanism releasably engaging an adjacent pair of the sidewalls when the sidewalls are in an assembled position; and a latch actuator connected to the at least one pair of latch mechanisms, the latch actuator operable by a single hand to substantially simultaneously disengage the pair of latch mechanisms.
- 23. The container in claim 22, wherein the sidewalls are pivotable between an assembled position and a collapsed position.
- 24. The container in claim 23, wherein the latch mechanism comprises a first latch portion disposed on a first one of the adjacent pair of sidewalls and a second latch portion disposed on a second one of the adjacent pair of sidewalls, the second latch portion for releasably engaging the first latch portion when the sidewalls are in the assembled position.
- 25. The container in claim 24, wherein the first latch portion comprises a substantially rectangular protruding bar and an aperture, the first latch portion extending from an end of the first one of the adjacent pair of sidewalls, for releasably engaging the second latch portion.
- 26. The container in claim 25, wherein the second latch portion comprises a resiliently deformable catch to releasably engage the first latch portion, and a catch lever extending from the catch.
- 27. The container in claim 26, wherein the latch actuator comprises a grip having a pair of flexible arms, each flexible arm extending from an end of the single grip and connected to an extending body portion, the extending body portion coupled to the catch lever.
- 28. A collapsible container comprising;a base; first and second pairs of opposed sidewalls, each sidewall pivotally attached to the base and moveable between an assembled position and a collapsed position; a plurality of latch bars, each latch bar attached to an end of each of the first pair of opposed sidewalls; a plurality of latch members, each latch member attached to an end of each of the second pair of opposed sidewalls and operable to releasably engage a respective one of the latch bars when the sidewalls are in the assembled position; and a pair of grip members, each grip member coupled to a pair of the latch members on a corresponding one of the second pair of opposed sidewalls, the grip member operable by a single hand to substantially simultaneously urge the pair of latch members to release each respective latch bar.
- 29. The container in claim 28, wherein the latch bar comprises a substantially rectangular protruding bar and an aperture for engaging with the latch member.
- 30. The container in claim 29, wherein the latch member comprises a resiliently deformable catch for releasably engaging the latch bar, and a catch lever extending from the catch.
- 31. The container in claim 30, wherein the grip member comprises a grip having a pair of flexible arms, each flexible arm extending from an end of the grip and connected to an extending body portion coupled to the catch lever.
US Referenced Citations (11)
Foreign Referenced Citations (2)
Number |
Date |
Country |
2175316 |
Oct 1997 |
CA |
2201010 |
Sep 1998 |
CA |