KR20190000866A - Prefabricated pallet equipped with a key lock - Google Patents

Abstract

Disclose is a prefabricated pallet equipped with a lock key, which is not easily separated after assembling while providing strong durability against an external shock or load of the loaded article without a separate adhesive or a thermal bonding process. According to the present invention, although a vibration is generated or an impact is applied from the outside while a forklift moves in a state that the article is unevenly loaded on the upper part of the prefabricated pallet, the prefabricated pallet is not easily separated and prevents an accident caused thereby.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a prefabricated pallet,

The present invention relates to a prefabricated pallet, and more particularly, to a prefabricated pallet having a lock key that can not be easily separated from an external impact by a prefabricated pallet assembled using a synthetic resin frame.

In general, pallets are used to transfer goods safely when carrying items such as forklifts at industrial sites.

The initial pallet consists of a wooden support which supports the floor and a wood plate which is installed on the top of the wooden support. The wooden support or the wood plate is light in weight, strong and easy to process, In recent years, it has been used mainly for transportation and storage of buildings and construction materials that are less susceptible to hygiene such as sidewalks and other products than food and commodities, After being transported and used to the final destination, it is being left on the construction site or on the streets, and it is developing into the urban environment problem.

To overcome such disadvantages, Korean Patent Laid-Open Publication No. 10-2003-0069918 discloses a method for manufacturing a pallet, which can be easily assembled, thereby shortening the working time and economical effect, And a "easy assembled pallet plate, a simple assembled pallet middle plate and a simple assembled pallet, and a manufacturing method thereof" which can support a heavy load or an impact load.

However, since the pallet used in this first prior art is mainly made of a surface-treated non-ferrous metal plate such as aluminum, stainless steel or the like, it is robust enough to bear a heavy load or an impact load sufficiently. However, Making it a factor that raises the overall manufacturing cost.

In order to improve the disadvantage of the first prior art as described above, Korean Patent Laid-Open Publication No. 10-2009-0025492 discloses a pallet made of a synthetic resin, in which the entire body is made of a single body, or the upper and lower plates are assembled by bolting, Quot; pallet for loading articles "which can prevent an increase in the production cost due to the necessity of an injection molding machine of the injection molding machine and prevent the maintenance cost from being increased by replacing the entire pallet when a part of the pallet is broken .

However, even though the second prior art is not formed as a single body, a separate medium injection molding machine is also required to produce the upper frame and the lower frame of the plastic material having the joint portion, And there is a limit to the use of the upper frame and the lower frame produced for a predetermined standard for different purposes.

In order to improve the disadvantages of the first prior art described above, Korean Patent Laid-Open Publication No. 10-2011-0128978 discloses a method of easily assembling the fastening means between the upper plate and the lower plate of the assembled pallet, A prefabricated pallet is described which can be carried out.

However, in the third prior art, a plurality of first support portions spaced apart from each other and spaced apart from each other are formed on the upper plate, and a plurality of second support portions spaced apart from each other on the lower plate are formed at corresponding positions of the first support portions A large injection molding machine in which the upper plate or the lower plate is molded into a single body is required as well as the upper plate and the lower plate are combined by fitting the second support portion to the first support portion. There was a blind man.

In order to improve the disadvantages of the prior art described above, Korean Patent Registration No. 10-1623298 discloses a double-sided corrugated cardboard made of synthetic resin, which can be assembled using a V-cutter, a folding frame manufactured by a folding and heating machine, A foldable frame manufactured by using a folding frame which can be assembled manually by using an adhesive or a fixing component without using a separate adhesive or a heat bonding process is described.

However, in the fourth prior art, when the fork of the forklift is moved in a state of being inserted into the opening window formed in the folding frame, the product rumbles due to the bottom condition or the product placed on the upper part of the prefabricated pallet is loaded in one direction, There was a problem that the assembled pallet was partly separated due to the unbalanced load of the product, and there was a structural problem in which safety accidents due to this occurred.

1. Korean Patent Publication No. 10-2003-0069918 (2003.08.27) 2. Korean Patent Publication No. 10-2009-0025492 (2009.03.11) 3. Korean Patent Publication No. 10-2011-0128978 (2011.12.01) 4. Korean Patent Registration No. 10-1623298 (2016, 05, 16)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art described above, and it is an object of the present invention to provide a method and apparatus for preventing an impact externally applied or a misalignment of a loaded article without using a separate adhesive or a fixing component, The present invention is to provide a prefabricated pallet provided with a lock key that has strong durability and is not easily separated after assembly.

Another object of the present invention is to provide a prefabricated pallet having a lock key that allows a general worker to easily separate and reassemble and reuse a damaged part only in case of partial breakage of the prefabricated pallet.

The assembled pallet having the lock key according to the present invention includes a frame assembly 100 including a plurality of first to fourth frames 110a, 110b, 120a, 120b, 130a, 130b, and 140; One or more first and second locking keys 200 selectively forcibly inserted into the plurality of first to fourth frames 110a, 110b, 120a, 120b, 130a, 130b, and 140; And at least one redistribution plate (300) installed on the top of the frame assembly (100)

First, second, third, and fourth connection portions 113a and 114a (113b and 114b) are formed on both sides of the first frame 110a and the first frame 110b, respectively, First, second, third, and fourth concave grooves 111a, 112a, 111b, 112b are formed on the upper surfaces of the first, second, third, and fourth connection portions 113a, 114a, 113b, A bottom surface of the first or second locking key 200 is recessed to a predetermined depth with a width and a thickness to be detachable;

The fifth, sixth, seventh and eighth connecting portions 123a and 124a (123b and 124b), which are integrally formed at both ends of the second frames 120a and 120b, Fifth, sixth, seventh, and eighth concave grooves 121a, 122a (121b, 122b) are formed in the portion of the second frame 120a, 120b that is in contact with the inner surface, The width, thickness, and depth of each of the seventh and eighth concave grooves 121a and 122a (121b and 122b) are set such that the third frames 130a and 130b are perpendicular to the upper portions of the second frames 120a and 120b, The bottom surfaces of the first lock keys 201, 202, 205 and 206 are formed to be fit to the fifth, sixth, seventh and eighth concave grooves 121a and 122a (121b and 122b) ;

Second and third connecting portions 113a and 114a and 113b and 114b formed integrally at both ends of the first frames 110a and 110b, The width, thickness, and depth of each of the first, second, third, and fourth concave grooves 111a, 112a, 111b, and 112b are integrally extended at both ends of the first frames 110a and 110b The first, second, third, and fourth connection portions 113a and 114a (113b and 114b) formed in the first and second frames 120a and 120b are connected to the first, The bottom surfaces of the second lock keys 203, 204, 207 and 208 are inserted into the first, second, third and fourth recessed grooves 111a and 112a (126a and 126b) 111b, and 112b, respectively.

According to the assembly type pallet having the lock key according to the present invention, it is possible to prevent the impact from being externally applied and the durability of the loaded goods to be high even when using a separate adhesive or a fixing part, It may not be easily separated.

Accordingly, even if vibration occurs when the forklift is moved in a state in which the article is placed in a restricted state on the upper part of the assembled pallet according to the present invention, or the impact is applied from the outside, the assembled pallet can not be easily separated, Can be prevented.

In addition, when a part of the assembled pallet is broken, the general operator can easily separate and reassemble and reuse the damaged part to replace only the damaged part. This makes it possible to easily maintain the assembled pallet and to reduce the generation of industrial waste and garbage .

FIG. 1 is a perspective view of a prefabricated pallet having a lock key according to a preferred embodiment of the present invention; FIG.
FIG. 2 is an exploded perspective view showing a prefabricated pallet having a lock key according to a preferred embodiment of the present invention; FIG.
3 is a perspective view showing a bottom part of the assembled pallet having a lock key according to a preferred embodiment of the present invention;
4A to 4F are views showing a procedure for assembling the assembled pallet having the lock key according to the preferred embodiment of the present invention.

As used herein, terms used in the present invention are selected from general terms that are widely used in the present invention while taking into account the functions of the present invention, but these may vary depending on the intention or custom of a person skilled in the art or the emergence of new technologies. In addition, in certain cases, there may be a term arbitrarily selected by the applicant, in which case the meaning thereof will be described in the description of the corresponding invention. Therefore, it is intended that the terminology used herein should be interpreted based on the meaning of the term rather than on the name of the term, and on the entire contents of the specification.

FIG. 1 is a perspective view of a prefabricated pallet having a lock key according to a preferred embodiment of the present invention; FIG. FIG. 2 is an exploded perspective view illustrating a assembled pallet having a lock key according to a preferred embodiment of the present invention.

Referring to FIGS. 1 and 2, a pallet having a lock key according to a preferred embodiment of the present invention includes a plurality of first to fourth frames 110a, 110b, 120a, 120b, 130a, 130b, and 140, And one or more first and second locking keys 200 selectively constrained to the first to fourth frames 110a, 110b, 120a, 120b, 130a, 130b, and 140, And one or more redirecting plates 300 mounted on the top of the frame assembly 100.

First, second, third, and fourth connection portions 113a and 114a (113b and 114b) are protruded from both sides of the first frame 110a and 110b, respectively, First, second, third, and fourth concave grooves 111a, 112a, 111b, 112b are formed on the upper surfaces of the first, second, third, and fourth connection portions 113a, 114a, 113b, The bottom surface of the first or second locking key 200 is recessed at a predetermined depth with a width and a thickness that can be collated and the first and second upper keys 110a, Grooves 115a and 115b are respectively formed in the lateral direction and a bottom surface for inserting a fork of a forklift is formed on both sides of the first frames 110a and 110b around the first and second upper engaging grooves 115a and 115b First, second, third, and fourth open grooves 117a, 118a (117b, 118b) are formed, and first, second, third, and fourth open grooves 117a, The first and second bottom plates 119a and 119b are attached to the bottom surfaces of the first frames 110a and 110b so as to support the bottom surfaces of the first and second bottom plates 118a and 118b, 119b are fixed.

Second, first, second, third, and fourth fitting holes 126a, 126c (126b, 126d) are formed in the center portions of the sides of the pair of straight-line-shaped second frames 120a, 120b, The first, second, third, and fourth connection portions 113a and 114a of the first frames 110a and 110b are connected to the first, second, third, and fourth fitting holes 126a and 126c, And third and fourth connecting portions 123a and 124a and 123b and 124b are protruded from both sides of the second frame 120a Sixth, seventh and eighth concave grooves 121a, 122a (121a, 122a) are formed in the upper surfaces of the fifth, sixth, seventh and eighth connection portions 123a, 124a Second and third fitting holes 126a and 126c are formed in the central portion of the upper surface of the second frames 120a and 120b Second, third and fourth lock holes 125a and 125c (125b and 125d) are vertically penetrated through the first, second and third lock holes 126a and 126b, respectively, The fourth lock hole 12 Fifth, sixth, seventh, and eighth open grooves (not shown) are formed on both sides of the second and third frames 120a and 120b with the forks of forklifts inserted therein, The second frames 120a and 120b are formed to support the bottom surfaces of the fifth, sixth, seventh and eighth opening grooves 127a and 128a and 127b and 128b, respectively. And the third and fourth bottom plates 129a and 129b are respectively fixed to the bottom surface of the bottom plate.

The fifth, sixth, seventh, and eighth fitting holes 133a, 134a, 133b, and 133b are formed on both side surfaces of the pair of flat third frames 130a and 130b, The fifth, sixth, seventh, and eighth connection portions 123a, 124a of the second frames 120a, 120b are connected to the first, fifth, sixth, seventh and eighth fitting holes 133a, 134a, 133b, The first and second engaging projections 123b and 124b are engaged with each other and connected to the fifth, sixth, seventh and eighth engaging holes 133a and 134a and 133b and 134b, And third and fourth upper locking grooves 135a and 135b are formed in the upper center portions of the third frames 130a and 130b. First and second seating portions 136a and 136b are formed on upper portions of the second and third upper joining recesses 135a and 135b, Fourth, tenth, eleventh, and eleventh pairs of openings are formed on both sides of the third frames 130a, 130b with respect to the four upper engagement grooves 135a, 135b. And a third frame (not shown) is formed to support the underside of the ninth, tenth, eleventh and twelfth opening grooves 137a, 138a, 137b and 138b, The fifth and sixth bottom plates 139a and 139b are fixed to the bottom surfaces of the first and second bottom plates 130a and 130b.

In addition, a fourth frame 140 having a rectangular shape and formed with first and second cutouts 143 and 144 at both ends thereof is provided with a first frame 140a on the upper part of the first through fourth upper joining recesses 115a and 115b (135a and 135b) The first to third upper coupling grooves 115a and 115b and 135a and 135b are formed in a row on the first and third frames 110a and 110b and 130a and 130b, The first and second cutouts 143 and 144 of the fourth frame 140 are seated on the first and second seating portions 136a and 136b of the third frames 130a and 130b, The first and second lower engagement grooves 141 and 142 are formed at the upper ends of the first and second incisions 143 and 144 so as to be opened at the lower center of the fourth frame 140, Thirteenth and fourteenth opening windows 147 and 148 are formed at both sides of the fourth frame 140 around the third lower opening groove 145, The bottom surface of the fourteenth opening window 147, The fourth bottom plate 149 is fixed to the bottom surface of the fourth frame 140. [

The first to fourth frames 110a, 110b, 120a, 120b, 130a, 130b, and 140 may be a folding frame obtained by folding corrugated cardboard made of synthetic resin through a predetermined tangent line and joining them through a thermal process, Or a stationary frame molded by an extrusion method may be used.

The upper portions of the fifth, sixth, seventh and eighth connecting portions 123a, 124a (123b, 124b) of the 자 or ┛ shape extending integrally at both ends of the second frames 120a, 120b Fifth, sixth, seventh and eighth concave grooves 121a and 122a (121b and 122b) are formed in the portion of the second frame 120a and 120b which is in contact with the inner surface, The width, thickness and depth of each of the seventh and eighth concave grooves 121a and 122a (121b and 122b) are set such that the third frames 130a and 130b are vertically coupled to the upper portions of the second frames 120a and 120b It is preferable that the bottom surfaces of the first lock keys 201, 202, 205 and 206 are formed to be fit to the fifth, sixth, seventh and eighth concave grooves 121a, 122a, 121b and 122b.

First and second connecting portions 113a and 114a and 113b and 114b are integrally formed at both ends of the first frames 110a and 110b. The width, thickness, and depth of each of the first, second, third, and fourth concave grooves 111a, 112a, 111b, and 112b formed in the first frame 110a, First, second, third, and fourth fitting portions 113a, 114a (113b, 114b) are formed in the first, second, third, and fourth fitting holes The undersides of the second lock keys 203,204,207 and 208 are engaged with the first, second, third and fourth concave grooves 111a, 112a, 111b and 112b, respectively, It is preferable to be formed so as to be suitable for insertion.

The upper portions of the fifth, sixth, seventh, and eighth connecting portions 123a, 123b (124a, 124b) of the 자 or ┛ shape extending integrally at both ends of the second frames 120a, 120b Fifth, sixth, seventh, and eighth concave grooves 121a and 121b (122a and 122b) are formed at portions of the second frames 120a and 120b that are in contact with the inner surfaces of the second frames 120a and 120b, The third frame 130a and the third frame 130b are vertically coupled to the second frame 120a and the second frame 120b, respectively, It is preferable that the bottom surfaces of the first lock keys 201, 202, 205 and 206 are formed to be fit to the fifth, sixth, seventh and eighth concave grooves 121a, 121b (122a, 122b).

The size or shape of the first, second, third, and fourth fitting projections 126a, 126c, 126b, 126d of the second frames 120a, Second, third and fourth connecting portions 113a, 114a, 113b, and 114b integrally extended from the first and second connecting portions 113a and 113b, respectively.

2, the first lock keys 201, 202, 205, and 206 are forcedly engaged with the third, fourth, fifth, and sixth lock holes 131a, 131b, 132a, and 132b, respectively, The pressure is applied to the top and at least one side of the third, fourth, fifth, and sixth connecting portions 123a, 124a, 123b, 124b of the two frames 120a, 120b, 1 lock keys 201, 202, 205, and 206 are preferably formed in the shape of a letter or a letter.

2, the second lock keys 203, 204, 207, and 208 are connected to the first, second, third, and fourth connecting portions 113a, 114a, 113b, 114b of the first frames 110a, 110b Second, third, and fourth lock holes 125a, 125c, respectively, while being fitted into the first, second, third, and fourth fitting engagement grooves 126a, 126c, 126b, 126d, The first and second connecting portions 113a and 114a and 113b and 114b of the first frames 110a and 110b are pressed against the first and second connecting portions 125b and 125d, However, in the embodiment of the present invention, the shape of the second lock keys 203, 304, 207, and 208 is preferably formed like a letterhead shape.

Although the first frame 110a and the second frame 110b are provided to divide the frame assembly 100 in the lateral direction of the frame assembly 100 according to the embodiment of the present invention, At least one fifth or sixth frame (not shown) in the left or right direction of the second frame 120a or 120b is additionally formed on the side of the second frame 120a or 120b at regular intervals in the same manner as the first frame 110a or 110b (Not shown), respectively.

On the other hand, on the upper side of the frame assembly 100, a redistribution plate 300 (300a, 300b) may be arranged as shown in FIG. 2, The first, second, and third frames 110a, 110b corresponding to the edges of the plurality of unit partition spaces partitioned by the coupling of the first, second, and third frames 110a, 110b, 120a, 120b, 130a, 110b, 120a, 120b, 120a, 130b, 120a, 120b, 130a, 130b and at least one frame 310 which is integrally formed with the frame 310. The first, second and third frames 110a, 120b, 130a, and 130b, and a base plate 320 having a lattice structure formed by inserting a predetermined length into a plurality of unit partition spaces partitioned by the coupling of the unit cells 120a, 120b, 130a, and 130b.

Hereinafter, with reference to the accompanying drawings, a manufacturing procedure of the assembled pallet having the lock key according to the present invention will be described.

First, as shown in FIGS. 4A and 4B, a worker is provided with a pair of linearly-shaped first, second, third and fourth connecting portions 113a and 114a (114b and 114b) The first frames 110a and 110b are prepared (S110).

Next, as shown in FIG. 4C, the operator places the first, second, third, and fourth connecting portions 113a, 114a, 114b, 114b of the first frames 110a, Second, third, and fourth fitting portions 126a, 126c (corresponding to the first, second, third, and fourth connecting portions 123a, 123b, 124a, 124b) 126b, and 126d are engaged with the second frames 120a and 120b, respectively (S120).

Next, as shown in FIG. 4C, the operator inserts third frames 130a and 130b having fifth, sixth, seventh, and eighth fitting-in holes 133a and 134a and 133b and 134b through the through- The fifth, sixth, seventh, and eighth connection portions 123a, 124a, 123b, 124b of the second frames 120a, 120b are respectively fitted and fitted together (S130).

4D, the operator inserts fifth, sixth, seventh, and eighth fitting-in holes 133a, 134a, 133b, and 134b (not shown) on upper portions of both side ends of the third frames 130a and 130b First lock keys 201, 202, 205, and 206 having predetermined shapes are respectively engaged with the fifth, sixth, seventh, and eighth lock holes 131a and 132a (131b and 132b) formed in the vertical direction, respectively, 126b, 126d so as to be connected to the first, second, third and fourth fitting grooves 126a, 126c (126b, 126d) at the central portion of the upper surface of the second frames 120a, The first, second, third, and fourth connection portions 113a, 113b of the first frames 110a, 110b are formed in the first, second, third, and fourth lock holes 125a, 125c, The first, second, and third engaging projections 114a, 113b, 114b are engaged with the first, second, third, and fourth fitting engagement grooves 126a, 126c, The second locking keys 203, 204, 207 and 208 are forcedly inserted into the four locking holes 125a and 125c (125b and 125d), respectively (S140).

In a preferred embodiment of the present invention, the first locking keys 201, 202, 205, and 206 are coupled to the fifth, sixth, and seventh frames in a state where a pair of third frames 130a and 130b are coupled to an upper portion of the pair of second frames 120a and 120b, When the first locking keys 201, 202, 205 and 206 are fitted in the sixth, seventh and eighth locking holes 131a and 132a (131b and 132b) in an interference fit manner, the fifth, sixth, seventh, The bottom surfaces of the first locking keys 201,202,205 and 206 having the stepped surfaces are connected to the fifth, sixth, seventh, and eighth connecting portions 123a and 124a, respectively, in a state of being fixed in the holes 131a and 132a (131b and 132b) The fifth, sixth, seventh and eighth concave grooves 121a, 122a (121b, 122b) of the first, second and third concaves 123b, 124b.

The first, second, third, and fourth connecting portions 113a, 114a, 113b, 114b of the pair of first frames 110a, 110b are connected to the first, second, third, Second and third lock holes 125a and 125c 125b and 125d in a state where the first and second lock keys 203, 204, 207 and 208 are inserted into the holes 126a and 126c (126b and 126d) When the first and second lock keys 203, 204, 207 and 208 are fixed to the first, second, third and fourth lock holes 125a and 125c (125b and 125d) Second and third concave grooves 111a, 112a, 111b, and 112b of the first frames 110a and 110b can be maintained by the bottom surfaces of the first and second frames 203, 204, 207, and 208, respectively.

Next, as shown in FIGS. 4E and 4F, the worker moves the first, second, third, and fourth upper joining recesses formed on the upper portions of the first and third frames 110a, 110b, 130a, The assembly of the entire frame assembly 100 is completed by coupling the fourth frame 140 to the upper portions of the first frame 115a, 115b, 135a, and 135b at step S150.

Next, the operator installs the red flags 300 (300a, 300b) on the top of the frame assembly 100 (S160).

Here, as shown in FIGS. 1 and 3, the redirecting plate 300 may be provided with a plurality of redirecting plates, each of which is connected to one redirecting plate or two or more uniting plates, It is also possible to fix the frame 300 to the upper part of the frame assembly 100 using a fixing member such as a bolt or a screw.

According to the preferred embodiment of the present invention, in the state that the article is loaded on the upper part of the assembled pallet according to the present invention in the state where the deflected load is generated, when the forklift is moved or vibration is applied from the outside, .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the invention as defined by the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention.

110a, 110b: first frame
111a, 111b, 112a, 112b: first to fourth concave grooves
113a, 113b, 114a, 114b: first to fourth connection portions
115a, 115b: first and second upper engagement grooves
117a, 117b, 118a, 118b: first to fourth opening windows
119a, 119b: first and second bottom plates
120a, 120b: a second frame
121a, 121b, 122a, 122b: fifth to eighth concave grooves
123a, 123b, 124a, 124b: fifth to eighth connecting parts
125a, 125b, 125c, 125d: first to fourth locking holes
126a, 126b, 126c, 126d: first to fourth fitting holes
127a, 127b, 128a, 128b: fifth to eighth opening windows
129a, 129b: third and fourth bottom plates
130a, 130b: third frame
131a, 131b, 132a, 132b: fifth to eighth lock holes
133a, 133b, 134a, 134b: fifth to eighth engaging holes
135a, 135b: third and fourth upper joining grooves
136a, 136b: first and second seat portions
137a, 137b, 138a, 138b: ninth through twelfth opening windows
139a, 139b: fifth and sixth bottom plates
140: fourth frame
141 and 142: first and second lower engagement grooves
143, 144: first and second incisions
145: third lower coupling groove
147, 148: thirteenth to fourteenth opening windows
149: Seventh bottom plate
201, 202, 205, 206: first lock key
203, 204, 207, 208: second lock key
300, 300a, 300b: enemy trial
310: frame
320: base plate

Claims (3)

A frame assembly 100 including a plurality of first to fourth frames 110a, 110b, 120a, 120b, 130a, 130b, and 140;
One or more first and second locking keys 200 selectively forcibly inserted into the plurality of first to fourth frames 110a, 110b, 120a, 120b, 130a, 130b, and 140;
And at least one redistribution plate (300) installed on the top of the frame assembly (100)
First, second, third, and fourth connection portions 113a and 114a (113b and 114b) are formed on both sides of the first frame 110a and the first frame 110b, respectively, First, second, third, and fourth concave grooves 111a, 112a, 111b, 112b are formed on the upper surfaces of the first, second, third, and fourth connection portions 113a, 114a, 113b, A bottom surface of the first or second locking key 200 is recessed to a predetermined depth with a width and a thickness to be detachable;
The fifth, sixth, seventh and eighth connecting portions 123a and 124a (123b and 124b), which are integrally formed at both ends of the second frames 120a and 120b, Fifth, sixth, seventh, and eighth concave grooves 121a, 122a (121b, 122b) are formed in the portion of the second frame 120a, 120b that is in contact with the inner surface, The width, thickness, and depth of each of the seventh and eighth concave grooves 121a and 122a (121b and 122b) are set such that the third frames 130a and 130b are perpendicular to the upper portions of the second frames 120a and 120b, The bottom surfaces of the first lock keys 201, 202, 205 and 206 are formed to be fit to the fifth, sixth, seventh and eighth concave grooves 121a and 122a (121b and 122b) ;
Second and third connecting portions 113a and 114a and 113b and 114b formed integrally at both ends of the first frames 110a and 110b, The width, thickness, and depth of each of the first, second, third, and fourth concave grooves 111a, 112a, 111b, and 112b are integrally extended at both ends of the first frames 110a and 110b The first, second, third, and fourth connection portions 113a and 114a (113b and 114b) formed in the first and second frames 120a and 120b are connected to the first, The bottom surfaces of the second lock keys 203, 204, 207 and 208 are inserted into the first, second, third and fourth recessed grooves 111a and 112a (126a and 126b) 111b, 112b, respectively. The lockable pallet according to claim 1, The method according to claim 1,
The second and the second frames 120a and 120b are inserted in the third, fourth, fifth, and sixth lock holes 131a, 131b, 132a, and 132b while the first lock keys 201, To each of the upper and at least one side of the third, fourth, fifth, and sixth connecting portions 123a, 124a (123b, 124b) of the first and second connecting portions 120a, 120b;
The second locking keys 203,204,207,208 are positioned in the first, second, third, and fourth connecting portions 113a, 114a, 113b, 114b of the first frames 110a, And the fourth fitting engagement grooves 126a, 126c (126b, 126d), respectively,
125b of the first frames 110a, 110b and the first, second, third, and fourth lock holes 125a, 125c, 125d of the first frame 110a, And a pressure is applied to upper and both sides of the connecting portions (113a, 114a) (113b, 114b). The method according to claim 1,
Wherein the first lock keys (201, 202, 205, 206) are formed in a shape of letter or letter shape, and the shape of the second lock keys (203, 304, 207, 208) .

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