KR20230100917A - Portable folding tray - Google Patents

Abstract

The present invention relates to a portable folding tray, which comprises: a first shelf part which has predetermined width and length, includes left and right sidewalls, and a plurality of moving wheels formed on the bottom surface; first sliding grooves which are formed on the left and right sidewalls of the first shelf part and extend in the length direction of the first shelf part; a second shelf part which is located at a predetermined height above the first shelf part, has predetermined width and length, and includes left and right sidewalls; second sliding grooves which are formed on the left and right sidewalls of the second shelf part and extend in the length direction of the second shelf part; a handle which is pivotally connected to the left and right sidewalls of the second shelf part; a pair of first supports, one end of which is coupled to the outside of the handle through a first shaft, and the other end of which has a first sliding wheel moving along the first sliding grooves; a pair of second supports, one end of which is coupled to the inside of the handle through a second shaft, and the other end of which has a second sliding wheel moving along the second sliding grooves; a pair of third supports, one end of which is pivotally connected to the other end of the second supports, and the other end of which is pivotally connected to the first shelf part, to cross the first supports in an X-shape. Therefore, the portable folding tray can enhance the efficiency of space utilization.

Description

Portable folding tray {Portable folding tray}

The present invention relates to a movable and foldable tray, which includes a plurality of shelves and is capable of being folded.

A tray is a device formed to allow users to move products indoors and outdoors, and is used to move objects in daily living spaces such as shopping, camping, and libraries.

In particular, in camping, there are many difficulties in moving and storing equipment when it is excessively large or bulky, so it can be stored by reducing the volume as needed, and practical camping equipment that can play multiple roles from one equipment to one equipment. Demand is increasing.

For this reason, Korean Patent Registration No. 10-1451976 introduces a multi-purpose foldable cart equipped with a plurality of casters in one device, and Korean Utility Model Registration No. 10-1451976 introduces a multi-level foldable shelf cart. And Korean Utility Model Registration No. 20-0486645 introduces a transport tray that can be stored in multiple stages.

However, the above methods have problems in that the parts and size are too large to be used for camping, and the structure is complicated, so there is a high risk of failure.

For this reason, there is a demand for a movable and foldable tray having a simple structure, being foldable, and including a plurality of shelves.

Republic of Korea Patent No. 10-1451976 (2014.10.10.) Korea Utility Model Registration No. 10-1451976 (November 17, 2000) Republic of Korea Utility Model Registration No. 20-0486645 (2018.06.08.)

In order to solve the above problems, the present invention can provide a movable and foldable tray that includes a plurality of shelves and is foldable by forming sliding grooves on left and right sides of the shelves.

In addition, the present invention can provide a movable and foldable tray capable of fixing the height of the shelf by adding a storage groove to the sliding groove.

An embodiment of the present invention for achieving the above object is a first shelf portion having a predetermined width and length, left and right side walls formed, and four or more moving wheels formed on the bottom surface, and the left and right side walls of the first shelf portion. A first sliding groove formed on the first shelf and extending in the longitudinal direction of the first shelf, a second shelf located at a point spaced apart from the top of the first shelf at a predetermined height, having a predetermined width and length, and having left and right side walls. A second sliding groove formed on the left and right sidewalls of the second shelf and extending in the longitudinal direction of the second shelf, a handle shaft-coupled with the left and right sidewalls of the second shelf, one end of which is outside the handle A pair of first supports coupled through one shaft, the other end formed with a first sliding wheel and moving along the first sliding groove, one end coupled through a second shaft inside the handle, and the other end connected to the second sliding groove A pair of second supports with wheels formed to move along the second sliding groove, one end of which is shaft-coupled to the other end of the second support, and the other end is shaft-coupled to the first shelf to form an X-shape with the first support It relates to a movable foldable tray including a pair of third supports intersecting with.

In the above embodiment, the second sliding groove may include an extension groove extending in the longitudinal direction of the second shelf unit, a storage groove spaced apart from the extension groove by a predetermined distance to fix the second sliding wheel, and the extension groove It may further include a joint groove connecting the storage groove.

In the above embodiment, the movable foldable tray further includes a pair of reinforcing rods formed inside the handle, one end coupled by the first shaft, and the other end coupled by the second shaft. can do.

In the above embodiment, the movable and foldable tray may further include a third shelf part located at a point spaced apart from the second shelf part at a predetermined height and having a predetermined width and length.

The movable foldable tray according to the present invention can provide a movable and foldable tray with a simplified structure by forming sliding grooves on the side surfaces of a plurality of shelves and fixing the first support, the second support and the third support to the sliding groove. there is.

Through this, the present invention can safely stack a large amount of objects and store and transport a large number of objects.

In addition, the present invention can improve the efficiency of space utilization by providing a foldable tray.

1 is a front view of a movable and foldable tray according to an embodiment of the present invention.
2 is a side view of a movable foldable tray according to an embodiment of the present invention.
FIG. 3 is an enlarged view of part A of FIG. 1 .
4 is a view for explaining in detail the shape of the first sliding groove of the movable and foldable tray according to an embodiment of the present invention.
5 is a view for explaining in detail the shape of the second sliding groove of the movable and foldable tray according to an embodiment of the present invention.
6 is a view for explaining the shape of the second sliding groove according to the first embodiment of the present invention.
7 is a view for explaining a shape of a second sliding groove according to a second embodiment of the present invention.
8 is a view for explaining a folding process of a movable and foldable tray according to an embodiment of the present invention, and FIG. 9 is a view showing the movable and foldable tray in a folded state.

Hereinafter, the movable foldable tray according to the present invention will be described in detail. The drawings introduced below are provided as examples so that the spirit of the present invention can be sufficiently conveyed to those skilled in the art. Therefore, the present invention may be embodied in other forms without being limited to the drawings presented below, and the drawings presented below may be exaggerated to clarify the spirit of the present invention. At this time, unless there is another definition in the technical terms and scientific terms used, they have meanings commonly understood by those of ordinary skill in the art to which this invention belongs, and the gist of the present invention in the following description and accompanying drawings Descriptions of known functions and configurations that may unnecessarily obscure are omitted.

One embodiment of the present invention relates to a movable collapsible tray. Specifically, the movable and collapsible tray of the present invention includes two or more shelves with sliding grooves formed on the side and a plurality of supports supporting the shelves, and the supports are moved through the sliding grooves to fold and store or unfold the shelves to store goods in multiple layers. can be used as a tray for transporting Through this, when moving objects in shopping, camping, library, and daily living spaces, a large amount of objects can be conveniently transported using multiple shelves, and space can be utilized by folding and storing when not in use.

The movable and foldable tray according to an embodiment of the present invention will be described in more detail through FIGS. 1 to 5 above.

1 is a front view of a movable and foldable tray according to an embodiment of the present invention, FIG. 2 is a side view of the movable and foldable tray according to an embodiment of the present invention, FIG. 3 is an enlarged view of part A of FIG. 1, and FIG. 4 is a view for specifically explaining the shape of the first sliding groove of the movable foldable tray according to an embodiment of the present invention, and FIG. It is a drawing for explanation.

1 to 5, the movable and foldable tray 100 according to an embodiment of the present invention includes a first shelf 10, a first sliding groove 13, a second shelf 30, and a second sliding Groove 33, third shelf 50, handle 70, a pair of first supports 21, a pair of second supports 23, a pair of third supports 25 and a pair It may include a reinforcement 27 of.

The first shelf part 10 has a predetermined width and length, has left and right side walls, and four or more moving wheels 15 may be formed on a lower surface. According to the embodiment, the length of the first shelf portion 10 may extend longer than the width of the first shelf portion 10 to be formed in a rectangular shape or rectangular parallelepiped. In addition, a wall having a predetermined height may be formed in the front and rear directions of the first shelf unit 10 as in the left and right directions.

According to the embodiment, the left and right sidewalls of the first shelf 10 may have grooves dividing the left and right sidewalls by a predetermined distance from the rear surface of the first shelf 10 to the upper surface, or two or more grooves may be formed. The side walls may be formed spaced apart by a predetermined distance. Through this, a pair of third supports 25 to be described later may be inserted into a groove having a predetermined depth or between two or more side walls, so that the movable and foldable tray 100 may be folded downward.

The first sliding groove 13 is formed on the left and right sidewalls of the first shelf unit 10, and unlike the previously described grooves dividing the left and right sidewalls by a predetermined distance, the first sliding groove 13 is formed on the outermost side of the first shelf unit 10. It is formed on the left side or the right side and may extend in the longitudinal direction of the first shelf part 10 .

In addition, the first sliding wheel 22 is coupled to the first sliding groove 13 to move the first support 21 to be described later in the longitudinal direction of the first shelf.

The second shelf part 30 is located at a point spaced apart from the top of the first shelf part 10 at a predetermined height, has a predetermined width and length like the first shelf part 10, and may have left and right side walls. . Of course, walls of a predetermined height may be formed in the front and rear directions of the second shelf portion 30 .

Like the first sliding groove 13 , the second sliding groove 33 may be formed on the left and right side walls of the second shelf 30 . However, unlike the first sliding groove 13 consisting of one groove extending in the longitudinal direction, the second sliding groove 33 is composed of three grooves having different directions, and each of the second sliding grooves 33 ) An extension groove 33-1 extending in the longitudinal direction of the second shelf unit, a storage groove 33-3 spaced apart from the extension groove 33-1 by a predetermined distance to which the second sliding wheel 24 is fixed, and It is composed of a joint groove 33-2 connecting the extension groove 33-1 and the storage groove. The reason why the second sliding groove 33 is composed of the extension groove 33-1, the storage groove 33-3, and the joint groove 33-2 and the specific effects realized thereby will be described in FIGS. 6 and 7 do.

The third shelf unit 50 may be located at a point spaced apart from the top of the second shelf unit 30 at a predetermined height and may have a predetermined width and length. Like the first shelf 10 and the second shelf 30, the third shelf may be surrounded by sidewalls having a predetermined thickness on left and right sides or front and rear sides, but is not limited thereto.

The handle 70 may be shaft-coupled with the left and right sidewalls of the second shelf 30, and more preferably, one end surface of the handle 70 passes through the first shaft A1 to the second shelf ( 30) can be coupled to the left and right side walls located on the rear side. Due to this feature, the handle 70 of the present invention can rotate clockwise or counterclockwise around the second shelf.

The pair of first supports 21 may extend to a predetermined length to connect one point of the first shelf unit 10 and one point of the second shelf unit 21 . Specifically, one end of the first support 21 is coupled to the outside of the handle 70 through a first shaft A1, and the other end has a first sliding wheel 22 formed to form a first sliding groove. can move along. Hereinafter, a point coupled by the first axis A1 is defined as a first point.

The pair of second supports 23 may extend to a predetermined length to connect one point of the second shelf 30 and one point of the handle 70 . Specifically, one end of the second support 23 is coupled to the inside of the handle 70 through a second shaft A2, and the other end is formed with a second sliding wheel 24 to form a second sliding groove ( 33) can be moved along. Hereinafter, a point coupled by the second axis A2 is defined as a second point.

The pair of third supports 25 may extend to a predetermined length to connect one point of the first shelf unit 10 and one point of the second shelf unit 30 . Specifically, one end of the third support 25 is coupled to the outside of the second support 23 through a third shaft A3, and the other end is located on the left and right side walls of the rear surface of the first shelf 10. can be coupled to As a result, the first support 21 and the third support 25 may cross each other in an X shape.

Finally, the reinforcing rod 27 is formed inside the handle 70 and can connect the first point and the second point. In other words, one end of the reinforcing bar 27 may be coupled by the first shaft A1 and the other end may be coupled by the second shaft A2.

According to the embodiment, the first point is the order of the reinforcement 27, the handle 70, and the first support 21 based on the second shelf 30 located at the innermost side by the first axis A1. , and the second point may be coupled in order to the reinforcing bar 27 and the handle 70 based on the second support 23 located at the innermost side by the second shaft A2.

Although not shown in the drawing, the movable foldable tray 100 has one end coupled to the inside or outside of the handle through a fourth shaft, and the other end coupled to the groove of the third shelf unit 50 to support the third shelf unit. A support may be further included.

The configuration of the movable foldable tray according to an embodiment of the present invention has been described above. Hereinafter, the shape of the second sliding groove according to the first embodiment and the second sliding groove according to the second embodiment of the present invention will be described with reference to FIGS. 6 and 7 .

6 is a view for explaining the shape of the second sliding groove according to the first embodiment of the present invention, and FIG. 7 is a view for explaining the shape of the second sliding groove according to the second embodiment of the present invention.

As described above, the second sliding groove 33 is composed of three grooves having different directions, respectively, the second sliding groove 33, an extension groove 33-1 extending in the longitudinal direction of the second shelf, A storage groove 33-3 spaced apart from the extension groove 33-1 by a predetermined distance to which the second sliding wheel 24 is fixed, and connecting the extension groove 33-1 and the storage groove 33-3. It is composed of a joint groove (33-2).

According to the embodiment, the extension groove 33-1, the storage groove 33-3, and the joint groove 33-2 may extend or protrude in different directions. In particular, the extension groove 33-1 extends in the longitudinal direction of the second shelf part 30, and the storage groove 33-3 protrudes in a direction different from that of the extension groove 33-1, so that the second The support 23 can be moved or fixed.

For example, the present invention moves the second sliding wheel 24 from the storage groove 33-3 to the extension groove 33-1 to extend the second support 23 to the length of the second shelf 30. direction can be moved. Alternatively, the second sliding wheel 24 is moved from the extension groove 33-1 to the storage groove 33-3 to prevent the second sliding wheel 24 from moving in the longitudinal direction of the second shelf 30. And, the second support (23) can be fixed.

Referring to FIG. 6, the present invention extends the extension groove 33-1 in the longitudinal direction of the second shelf 30, and extends the storage groove 33-3 in the extension groove 33-1. It can be manufactured in a form protruding in the opposite direction. In addition, the joint groove 33-2 can be curved toward the upper or lower end of the second shelf part 30 to connect the extension groove 33-1 and the storage groove 33-3 with a curved surface. The first embodiment defines a shape in which the extension groove 33-1 and the storage groove 33-3 extend or protrude in opposite directions.

According to the first embodiment, the second sliding wheel 24 may move toward the front or rear side of the second support 23 along the extension groove 33-1. In this process, when the rear part of the second sliding wheel 24 moves beyond a certain level, the second sliding wheel 24 can be fixed by placing it in the storage groove 33-3 along the joint groove 33-2. there is.

In FIG. 6, the extension groove 33-1 and the storage groove 33-3 are described as being formed at the same height, but it is not limited thereto, and the extension groove 33-1 and the storage groove 33-3 are They can be formed at different heights. In addition, the movement of the second sliding wheel 24 may be further restricted by placing a protruding jaw, a magnet, or the like between the joint groove 33-2 and the storage groove 33-3.

In addition, although the lower part of the extension groove 33-1 is described in an open form in FIG. 6, it is not limited thereto, and the lower end of the joint groove is closed to prevent the second sliding wheel 24 from being exposed to the outside. there is.

According to another embodiment, as shown in FIG. 6, the extension groove 33-1 extends in the longitudinal direction of the second shelf 30, and the storage groove 33-3 extends the extension groove 33-1. It may be manufactured in a form protruding toward the upper end of the second shelf part 30 . In this process, the joint groove 33-2 may be provided with a curved surface toward the lower end of the second shelf part 30. The shape in which the storage groove 33-3 extends or protrudes toward the upper end of the second shelf unit is defined as the second embodiment.

Referring to FIG. 7 , unlike the first embodiment, the second sliding wheel 24 may be inserted into and fixed to the storage groove 33-3. In addition, the joint groove 33-2 serves as a protruding jaw, so that the second sliding wheel 24 can be fixed more strongly.

Through this, the present invention can move the second sliding wheel 24 in the longitudinal direction of the second shelf 30 along the second sliding groove 33, and if necessary, the second sliding wheel 24 can be moved to the storage groove. It can be stored and fixed in (33-3).

The shape of the second sliding groove has been described above with reference to FIGS. 6 and 7 . Hereinafter, the folding process of the movable foldable tray according to an embodiment of the present invention will be described with reference to FIGS. 8 and 9 .

8 is a view for explaining a folding process of a movable and foldable tray according to an embodiment of the present invention, and FIG. 9 is a view showing the movable and foldable tray in a folded state.

Referring to FIG. 8 , while the first sliding wheel 22 and the second sliding wheel 24 move along the first sliding groove 13 and the second sliding groove 33, the first support 21 and the second sliding wheel 24 move. The support 23 can be moved. As a result, the second shelf unit 30 may approach the first shelf unit 10 and the movable and foldable tray 100 may have a folded state.

Specifically, the user can move the second sliding wheel 24 fixed to the storage groove 33-3 to the extension groove 33-1. As a result, the second sliding wheel can be moved in the longitudinal direction of the second support (23). At the same time, the first sliding wheel also moves in the longitudinal direction of the first support 21 .

Through this, the user can fold the movable and foldable tray 100 as shown in FIG. 9 .

According to another embodiment of the present invention, the movable and foldable tray 100 is coupled to the first shaft A1, the first gear unit and the second shaft for transmitting power to the first sliding wheel 22 A second gear portion coupled to (A2) and transmitting power to the second sliding wheel 24 may be included. Hereinafter, an embodiment in which a first gear unit and a second gear unit are included in the foldable tray is defined as a third embodiment.

According to the third embodiment, a predetermined space may be formed inside the first support 21, and the first gear unit may be included in the space.

According to the embodiment, the first gear unit includes a first worm gear fixed to the first shaft A1, a second worm gear fixed to the first sliding wheel 22, and the first worm gear and the second worm gear It may include a first worm to be engaged. Through this, when the first shaft A1 rotates by a predetermined external force, the rotational force of the first shaft A1 is transmitted to the first sliding wheel 22 to rotate the first sliding wheel 22. .

Also, a predetermined space may be formed inside the second support 23, and a second gear unit may be included in the space. According to the embodiment, the second gear unit includes a third worm gear fixed to the second shaft A2, a fourth worm gear fixed to the second sliding wheel 24, and the third worm gear and the fourth worm gear. It may include a second worm that engages. Through this, when the second shaft A2 rotates by a predetermined external force, the rotational force of the second shaft A2 is transmitted to the second sliding wheel 24 to rotate the second sliding wheel 24. .

According to the embodiment, the first shaft (A1) and the second shaft (A2) may further include a connection gear unit for exchanging power with each other. Like the first gear unit and the second gear unit, the connection gear unit may also include a worm and a worm gear to transmit power from the first shaft A1 to the second shaft A2. It goes without saying that the power of the second shaft A2 can be transmitted to the first shaft A1 through the connection gear unit.

Due to this feature, the present invention, when the user artificially rotates any one of the first axis A1 or the second axis A2, transfers the rotational power generated at this time to the other axis to rotate all axes. can be rotated As a result, it is possible to simultaneously move the sliding wheels connected to the respective axes.

For example, as shown in FIG. 8 , when the user rotates the handle 70 in the longitudinal direction of the first shelf 10 and the second shelf 30, the handle 70 causes the first shaft ( A1) can be rotated, and at the same time, the second shaft A2 can be rotated through the connecting gear unit.

As a result, the first shaft A1 may move the first sliding wheel and the second sliding wheel through the first gear unit. Through this, the user can automatically fold the movable and foldable tray 100 as shown in FIG. 8 only by rotating the handle 70 in the longitudinal direction of the first shelf unit 10 and the second shelf unit 30 . Although the method of folding the movable and foldable tray 100 has been described in this specification, it is obvious that the movable and foldable tray 100 can be unfolded by moving the handle 70 in the opposite direction. In addition, the handle 70 may be automatically folded by bringing the second shelf 30 adjacent to the first shelf 10 according to the same principle.

Although the present invention has been described through the specific details and limited manufacturing examples as described above, this is only provided to help a more general understanding of the present invention, the present invention is not limited to the above manufacturing examples, and the present invention belongs Various modifications and variations from these descriptions are possible to those skilled in the art.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and it will be said that not only the claims to be described later, but also all modifications equivalent or equivalent to these claims belong to the scope of the present invention. .

100: movable folding tray
10: first shelf
22: first sliding wheel
23: second support
24: second sliding wheel
25: third support
27: reinforcement bar
30: second shelf
70: handle

Claims (4)

A first shelf unit having a predetermined width and length, having left and right side walls, and four or more moving wheels formed on a bottom surface;
first sliding grooves formed on left and right sidewalls of the first shelf unit and extending in the longitudinal direction of the first shelf unit;
a second shelf part located at a point spaced apart from the top of the first shelf part by a predetermined height, having a predetermined width and length, and having left and right side walls;
second sliding grooves formed on left and right sidewalls of the second shelf unit and extending in the longitudinal direction of the second shelf unit;
handles shaft-coupled with left and right sidewalls of the second shelf unit;
a pair of first supports, one end of which is coupled to the outside of the handle through a first shaft, and the other end of which is a first sliding wheel formed to move along a first sliding groove;
a pair of second supports having one end coupled to the inside of the handle through a second shaft and the other end formed with a second sliding wheel and moving along a second sliding groove; and
A movable foldable tray comprising: a pair of third supports, one end of which is shaft-coupled to the other end of the second support and the other end is shaft-coupled to the first shelf and intersects the first support in an X-shape. According to claim 1,
The second sliding groove,
an extension groove extending in the longitudinal direction of the second shelf portion;
a storage groove spaced apart from the extension groove by a predetermined distance to which the second sliding wheel is fixed; and
Further comprising a movable foldable tray; a joint groove connecting the extension groove and the storage groove. According to claim 1,
The movable folding tray,
A movable foldable tray further comprising a pair of reinforcing rods formed inside the handle, one end coupled to the first shaft and the other end coupled to the second shaft. According to claim 1,
The movable folding tray,
Further comprising a third shelf portion located at a point spaced apart from the upper portion of the second shelf portion at a predetermined height and having a predetermined width and length. Removable folding tray.

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