WO2005063082A1

WO2005063082A1 - Mobile rack

Info

Publication number: WO2005063082A1
Application number: PCT/KR2004/002676
Authority: WO
Inventors: Hong Jik Lee
Original assignee: Sam Kwang System Co., Ltd.
Priority date: 2003-12-26
Filing date: 2004-10-19
Publication date: 2005-07-14
Also published as: JP2005192952A; KR100639263B1; KR20050066432A

Abstract

The present invention relates to a mobile rack that includes a moving part that is movable in left and right directions, and is configured to store materials, and has a partition and a support at an intermediate portion; a fixing part that is fixed at one end of a rail based on an installation condition; a control part that is configured to move the moving part; a rail that is installed at the lower sides of the moving part and the fixing part for thereby moving the moving part in left and right directions; a stopping part that is installed at an end of the rail for stopping a movement of the moving part; a floor part that is inserted and assembled at an inner side between the rails; a wing part that is engaged to a lateral side of the rail; and a support bar that is foldably connected between the moving part and the fixing part.

Description

Description MOBILE RACK Technical Field

[1] The present invention relates to a mobile rack, and in particular to an improved mobile rack capable of comprehensively and intensely managing a large number of materials and data in such a manner that a mobile rack is configured to be easy to handle, move, install and fabricate. Generally, a mobile rack has been used for comprehensively and intensely managing a large number of materials and data in a limited narrow space. The above mobile rack is classified into a motored mobile rack, a handle type mobile rack and a hydraulic type mobile rack. In addition, a freight-dedicated mobile rack has been used at a limited narrow space such as a factory and a warehouse. Disclosure of Invention Technical Problem

[2] However, in the case that materials and documents are stored in a conventional mobile rack in an office, since a center support part is formed in an angle type, not in a panel type, a certain number of parts is additionally needed since left, right, and rear side partitions are not provided. In addition, it is very inconvenient to use the conventional mobile rack. Since a frame and a rail (no assembling type) are formed in an integral welding structure, a volume is large, and a weight is heavy. In the case that the conventional mobile rack is exported to foreign countries, a transportation cost is increased.

[3] In addition, the rail should be installed on a floor in order to move a mobile rack in a conventional art. In this case, since the rail is installed on a floor, the rail may become a certain obstacle to people walking on the floor. In addition, the rail is generally painted, so that the painted portions could be peeled by friction between the painted portions and the wheels. Therefore, a rusting phenomenon may occur at the peeled portions, so that the rail may be easily damaged. Technical Solution

[4] Accordingly, it is an object of the present invention to provide a mobile rack capable of overcoming the problems encountered in the conventional art. It is another object of the present invention to provide a mobile rack that is configured in a panel type that operates as a support bar and a partition. It is further another object of the present invention to provide a mobile rack in which a support member is installed at a support bar and partition using a hooker. It is still further another object of the present invention to provide a mobile rack in which a frame supporting a mobile part and the structure of a fixing part and a rail is changed from an integral welding type structure to a screw engaging assembling structure. It is still further another object of the present invention to provide a mobile rack in which the material of a rail is changed from a steel structure to an aluminum injection frame structure for thereby enhancing an anti- corrosion structure and preventing an easier corrosion.

[5] To achieve the above objects, there is provided a mobile rack that includes a moving part that is movable in left and right directions, and is configured to store materials, and has a partition and a support at an intermediate portion; a fixing part that is fixed at one end of a rail based on an installation condition; a control part that is configured to move the moving part; a rail that is installed at the lower sides of the moving part and the fixing part for thereby moving the moving part in left and right directions; a stopping part that is installed at an end of the rail for stopping a movement of the moving part; a floor part that is inserted and assembled at an inner side between the rails; a wing part that is engaged to a lateral side of the rail; and a support bar that is foldably connected between the moving part and the fixing part. Advantageous Effects

[6] As described above, the column structure of the mobile rack according to the present invention is configured in one panel structure that operates for both the support member and partition. A bookshelf is installed in such a manner that a hooker is engaged with the support bar and partition for thereby enhancing an efficiency of use. The structure of the frame part and rail part is changed from the welding integral structure to the screw engaging assembling structure, so that a movement and installation are easier. In addition, a product transportation cost is decreased. Since the material of the rail is changed, it is possible to enhance durability. Even when the mobile rack according to the present invention is used for a long time, it is possible to effectively prevent the damages. Brief Description of the Drawings

[7] The preferred embodiments of the present invention will be described with reference to the accompanying drawings.

[8] Hgure 1 is a view illustrating the whole construction of a mobile rack according to the present invention;

[9] Hgure 2 is a disassembled perspective view illustrating a support bar of Hgure 1 according to the present invention; [10] Hgure 3 is a perspective view illustrating a column and partition according to the present invention; [11] Hgure 4 is a disassembled perspective view illustrating a rail and a peripheral part according to the present invention; [12] Hgure 5 is a cross sectional view illustrating a rail and a wing part according to the present invention; [13] Hgure 6 is a view illustrating an engaging state of a wing part according to the present invention; [14] Hgure 7 is a perspective view illustrating a frame engaged to a lower side of a mobile rack and a frame connection beam according to the present invention; [15] Hgure 8 is a detailed cross sectional view illustrating an operation of a frame fixing part according to the present invention; [16] Hgure 9 is a view illustrating a state that a frame and a frame fixing part are installed; [17] Hgure 10 is a cross sectional view illustrating a finishing portion of a front lateral side of a moving part and a fixing part; [18] Hgure 11 is a detailed view illustrating a chain driving part according to the present invention; [19] Hgure 12 is a detailed view illustrating a chain gear of Hgure 11 ;

[20] Hgure 13 is a disassembled perspective view illustrating a control part according to the present invention; [21] Hgure 14 is a cross sectional view illustrating an assembled state of a control part according to the present invention; [22] Hgures 15 through 19 are views illustrating other embodiments of a rail and a wheel according to the present invention; and [23] Hgure 20 is a cross sectional view illustrating a state that a floor part is installed between rails according to the present invention. Best Mode for Carrying Out the Invention [24] The preferred embodiment of the present invention will be described with reference to the accompanying drawings. [25] Hgure 1 is a view illustrating the whole construction of a mobile rack according to the present invention. As shown therein, the mobile rack according to the present invention includes: [26] a moving part 10 that is movable in left and right directions, and is configured to store materials, and has a partition 5 and a support 6 at an intermediate portion; a fixing part 11 that is fixed at one end of a rail 30 based on an installation condition; a control part 20 that is configured to move the moving part 10; a rail 30 that is installed at the lower sides of the moving part 10 and the fixing part 11 for thereby moving the moving part 10 in left and right directions; a stopping part 40 that is installed at an end of the rail 30 for stopping a movement of the moving part 10; a floor part 50 that is inserted and assembled at an inner side between the rails 30; a wing part 60 that is engaged to a lateral side of the rail 30; and a support bar 80 that is foldably connected between the moving part 10 and the fixing part 11.

[27] As shown in Hgure 2, the support bar 80 includes a first support member 81 that has a fixing protrusion 81-1 at one end of the same for rotatably fixing to the moving part 10 or the body of the fixing part 11, wherein a lower rotation part 82 formed in a circular plate shape is provided at the other end of the same; and a second support member 83 that has a fixing protrusion 83-1 at one end of the same for rotatably fixing to the moving part 10 or the body of the fixing part 11, wherein an upper rotation part 84 formed in a circular plate shape is provided at the other end of the same, wherein the upper rotation part 84 of the second support member 83 is inserted into an upper side of the lower rotation part 82 of the first support member 81, and the lower rotation part 82 of the first support member 81 and the upper rotation part 84 of the second support member 83 are engaged by an engaging member for thereby achieving a foldable construction based on the rotations of the upper and lower rotation parts 84 and 82.

[28] As shown in Hgure 3, the partition 5 includes a plurality of holes 5a and 5b vertically formed at left and right sides of a partition 5 formed in a panel shape; a hooker 5c that is selectively inserted into the holes 5a and 5b, wherein a support 6 is placed thereon; and an edge part 5d formed at both sides.

[29] Hgure 4 is a detailed view illustrating a rail 30 and a stopping part 40 engaged to an end portion of the rail 30. Engaging grooves 2 and 3 are formed at both sides of a rolling member 1 of the rail 30. The wheels contact with an upper side of the rolling member 1 and are moved. A circular protrusion 30d is formed at both ends of the rail 30. As shown in Hgure 5, the wing part 60 is rotatably engaged at the circular protrusion 30d.

[30] The stopping part 40 includes a rail stopper 41 that has an insertion protrusion 42 inserted into the grooves 2 and 3 of the rail 30, a plurality of holes 43 formed in order for a screw to be engaged, and a slanted surface; and a nut 44 that is inserted into the grooves 2 and 3 and the hole 43 of the rail stopper 41.

[31] In the drawings, reference numeral 30a represents a connection part for continuously connecting another rail, and reference numeral 30b represents a plurality of horixHital degree adjusting supporters that are overlapped and inserted into holes (not shown) formed at both lower sides of the rail 30 for thereby adjusting a horixHital degree of the rail, and reference numeral 30c represents a plurality of protrusions formed on the upper surfaces of the horixHital degree adjusting supporters 30b.

[32] Hgure 6 is a view illustrating a state that the wing parts 60 inserted onto both sides of the rail 30 are engaged with each other. An engaging pin 61 is inserted into an engaging groove 60-3 horixHitally formed at a lower side of the wing part 60-2 and is inserted into an engaging groove of a neighboring wing part 60-1 for thereby achieving an engagement.

[33] Hgure 7 is a view illustrating an assembled state of a frame part engaged on the rail 30 according to the present invention. Frame connection beams 33 and 34 are engaged between two frames 31 and 32 installed at both sides. In a state that two frame fixing brackets 35 are fixed at the lower sides of the frames 31 and 32 using bolts and nuts, the frame part is engaged at the rail 30 using bolts and nuts. Two wheels 36 and idle gears 51 are fixedly engaged at a lower side of the frame 31. Two wheels 37 are fixedly engaged at a lower side of the frame 32 for thereby forming a moving part 10.

[34] In a state that the frame fixing brackets 35 are fixed, wheels 36 and 37 are fixedly engaged at the bracket 35.

[35] In addition, partition fixing brackets 38 and 39 are fixed at the upper sides of the frames 31 and 32. As shown in Hgure 3, the partition 5 is engaged at the partition fixing brackets 38 and 39.

[36] A sprocket 36b is fixed at the opposed side of a shaft 36a of the wheel 36, and a pipe 70 is connected to a shaft of two wheels 36 and 37 for transferring a rotational force of the wheel 36 to the wheel 37.

[37] Hgure 8 is a detailed cross sectional view for describing an operation of the frame fixing part according to the present invention.

[38] As shown in Hgure 8a, a fixture 94 is installed in the interior of the frame 31. A moving member 92 is installed at the fixture 94 wherein the moving member 92 is upwardly and downwardly movable. Here, the fixture 94 and the moving member 92 are connected by an elastic member 93 having a certain recovering force. Falling prevention brackets 92-1 and 92-1 are provided at a lower side of the moving member 92 and are inserted into the engaging grooves 1 and 3 of the rail 30. A pushing member 91 is inserted between the moving member 92 and the fixture 94 for thereby maintaining a certain interval between the moving member 92 and the fixture 94.

[39] Hgure 9 is a view illustrating a state that the frame 31 and the frame fixing part are installed. The pushing member 91 is inserted into the interior of the frame 31 through an insertion hole 95. The pushing member 91 is engaged to an outer side of the frame 31 and is forwardly and backwardly movable.

[40] In addition, the pushing member 91 is forwardly and backwardly movable by a cylinder (not shown).

[41] Therefore, the pushing member 91 is forwardly and backwardly movable by an input of an input button 90.

[42] Hgure 10 is a view illustrating a finishing material that is used for finishing the moving part 10 and a front finishing part 11-1 of the fixing part 11. A cover 11 -2 is inserted into the front lateral part 11-1, and a lateral side of the cover 11-2 is engaged by a bolt 11-4. A front side of the cover 11-2 is engaged by a bolt 11-5.

[43] At this time, a hollow part 11-6 is formed between the cover 11-2 and the front lateral part 11-1, and a smooth impact absorbing part 11-3 is engaged at a front outer side of the cover 11-2.

[44] Therefore, when the moving part 10 is moved in the direction of the fixing part 11 and contacts with the same, the impact is first absorbed by the impact absorbing part 11-3, and the impact is second absorbed by the cover 11-2 for thereby preventing noises and damages.

[45] Hgure 11 is a view illustrating a state that a chain 50 is connected with the sprocket 36d according to the present invention. Two frame sprockets 36d are engaged to the frame 31. An idle gear 51 is installed between the sprockets 36d. A driving gear 54 is installed at the control part 20. When the shaft 66a of the control part 20 is driven, the driving gear 54 is driven. A tension gear 53 is installed at a lower side of the driving gear 54 for thereby providing a tensional force to the chain 50.

[46] As shown in Hgure 12, the tension gear 53 includes an eccentric shaft 51-2 of which a center shaft is eccentric. Therefore, when the chain 50 is engaged with the chain groove 51-1, it is possible to adjust the tensional force of the chain 50 based on the position change of the eccentric shaft 51-2.

[47] Hgure 13 is a disassembled perspective view illustrating the control part 20 according to the present invention, and Hgure 14 is a cross sectional view of an assembled state of the same. A control panel 62 having a plurality of holes 63 is fixed at a column 61. A control box 66 is fixed at a control box bracket 65. An engaging protrusion 67 is fixedly inserted into a hole 63 of the control panel 62.

[48] In addition, a stopper gear 66b, a driving gear 66c and a bearing 66d are connected with a handle shaft 66a of the control box 66. A stopper 66e is engaged with the stopper gear 66b.

[49] A groove 65a is formed at the control box bracket 65, and a bearing 66d is inserted thereinto.

[50] Hgures 15 through 19 are views illustrating various embodiments of the rail 30 and the wheel 36.

[51] As shown in Hgure 15, a protrusion 1 of the rail 30 is formed in a rectangular shape, and a contacting portion of the wheel is formed in a rectangular shape.

[52] As shown in Hgure 16, a groove 30f is formed at an upper side of the protrusion 1 of the rail 30. A circular protrusion 30g is formed at a contacting portion of the wheel 36. The circular protrusion 36g is inserted into the groove 30f and is moved.

[53] As shown in Hgure 17, the protrusion 1 of the rail 30 is formed in a circular shape. A circular groove 36h is formed at a contacting portion of the wheel 36. The circular protrusion 1 is inserted into the circular groove 36h and is moved.

[54] As shown in Hgure 18, an opening part 3 If is formed at the protrusion 1 of the rail 30. A rectangular protrusion 36f is formed at a contacting portion of the wheel 36. The rectangular protrusion 36f is inserted into the opening 3 If and is moved.

[55] As shown in Hgure 19, an opening 31g is formed at the protrusion 1 of the rail 30. A triangular protrusion 36j is formed at a contacting portion of the wheel 36, and the triangular protrusion 36j is inserted into the opening 31g and is moved.

[56] Hgure 20 is a cross sectional view illustrating a state that a floor part 50 is engaged between the rails 30. A fixing groove 81 is formed at a lower corner portion of the floor part 50. A circular protrusion 30d of the rail 30 is inserted into the fixing groove 51 of the floor part 50.

[57] The operation of the present invention will be described with reference to the accompanying drawings.

[58] In the present invention, the moving part 10 and the fixing part 11 are fixed on the rail 30. At this time, the moving part 10 is movably installed in multiple numbers. A control part 20 is installed at a lateral side of the moving part 10. The moving part 10 is moved in a left and right direction by controlling the control part 20 in a state that a large number of data are stored in the moving part 10, so that it is possible to easily search a desired data even in a limited narrow space.

[59] Namely, as shown in Hgure 13, in the control part 20, a control panel 62 is fixed at the column 61. A plurality of holes 63 are formed at the control panel 62. A plurality of engaging protrusions 67 formed on a back surface of the control box bracket 65 are inserted into the holes 63 from the upper side to the lower side for thereby being stably fixed.

[60] In addition, the control box 66 is fixed at the control box bracket 65. As shown in Hgure 14, the stopper gear 66b, the driving gear 66c and the bearing 66d are engaged in the interior of the control box 66. In the above state, when the stopper 66e is rotated, the stopper 66b is not rotated, so that the moving part 10 is not moved.

[61] A groove is formed at the control box bracket 65 in such a manner that the bearing 66d is inserted thereinto.

[62] As shown in Hgure 3, in the present invention, in a state that the partition 5 is formed in an integral panel structure, a plurality of holes 5a and 5b are formed at both sides. A hooker 5c is stably inserted into the hole 5a and is fixed. In the above state, the wings of the hooker 5c are fixed at both sides of the partition, so that the supporter 6 is stably placed on the wings.

[63] A support bar 80 is provided between the moving part 10 and the fixing part 11 or between the moving parts for thereby preventing a falling phenomenon.

[64] Here, the construction of the support bar 80 is shown in Hgure 2.

[65] An upper rotation part 84 is inserted into the upper side of the lower rotation part 82, so that the upper and lower rotation parts 84 and 82 are rotatable with respect to each other.

[66] A first support member 81 and a second support member 83 are extended from the lower rotation part 82 and the upper rotation part 84, respectively, and the fixing protrusions 81-1 and 83-1 formed at the lower side are rotatable with respect to the upper surfaces of the moving part 10 and the fixing part 11.

[67] Here, the rollers 81-2 and 83-2 are rolled on the upper surfaces of the moving part 10 and the fixing part 11 when the first support member 81 and the second support member 83 are rotated for thereby achieving a smooth rolling operation. In addition, the rollers 81-2 and 83-2 are configured to support the support members 81 and 83.

[68] An upper cover 87 and a lower cover 88 are engaged to the upper rotation part 84 and the lower rotation part 82, respectively.

[69] In addition, Hgure 4 is a view illustrating a rail 30 according to an embodiment of the present invention. A rolling member 1 is installed at a center portion of the rail 30. Engaging grooves 2 and 3 are formed at both sides of the same. The wheel 36 moves along the rolling member 1. [70] Here, a stopping part 40 is provided at one end of the rail 30. The rail 36 is not escaped to the outside by the rail stopper 41 of the stopping part 40, but is stopped thereby. A pair of insertion protrusions 42 are formed at the front side of the rail stopper 41. A rectangular nut 44 is inserted into the inner sides of the engaging grooves 2 and 3 and passes through the hole 43, and the insertion protrusions 42 are engaged using a screw in a state that the insertion protrusion 42 is inserted into the engaging grooves 2 and 3.

[71] At this time, the insertion protrusions 42 are not escaped to the outside by the protrusions formed on the upper side of the engaging grooves 2 and 3 in a state that the rectangular nut 44 is inserted in the inner side of the engaging grooves 2 and 3.

[72] In the present invention, a plurality of holes are formed at a lower side of the circular protrusion 30d of the rail 30. The protrusion part 30c of the horixHital degree adjusting supporter 30b is inserted in a state that the holes are aligned for thereby adjusting a horixHital degree of the rail. A connection member 30a is fixed at the other end of the rail 30. Therefore, the rain 30 can be continuously connected using the connection member 30a in the above manner.

[73] In addition, as shown in Hgure 5, the circular protrusion 30d can be inserted in a state that the wing part 60 maintains a horixHital state. At this time, the wing part 60 engaged to the rail 30 maintains a certain angle and closely contacts with the ground.

[74] As shown in Hgure 6, when one wing part 60-2 is engaged with the wing part 60-1, the wing parts 60-2 and 60-1 are engaged with each other in such a manner that the engaging pin 61 is inserted into the engaging groove 60-3 formed on the lower surface.

[75] As shown in Hgure 7, in the present invention, the partition fixing brackets 38 and 39 are fixed at the upper surfaces of the frames 31 and 32, so that the partition 5 can be stably fixed at the brackets 38 and 39.

[76] In addition, two wheels 36 and idle gears 51 are installed at a lower inner side of the frame 31, and two wheels 37 are installed at a lower inner side of the other frame 32 for thereby configuring the frame of the moving part 10. According to an installation condition, the frame fixing brackets 35 could be fixed using bolts and nuts at the portion in which the wheels of the lower inner side of the frames 31 and 32 are inserted. The above frame is engaged with the rail 30 using bolts and nuts 44 and is not movable from the rail 30 for thereby configuring the frame of the fixing part 11.

[77] Hgure 8 is a view illustrating a falling prevention apparatus of the frame. A pushing member 91 is inserted from the outside into an insertion hole 95 formed at a lateral side of the frame 31 and is further inserted between the moving member 92 and the fixture 94, so that the tapered portion maintains a certain interval between the moving member 92 and the fixture 94.

[78] Therefore, the moving part 92 is lifted up, and the falling prevention brackets 92-1 and 92-1 catch the protrusions of the rail 30, and the frame 31 is fixed for thereby preventing a falling phenomenon.

[79] In addition, as shown in Hgure 9, the pushing member 91 is inserted into the interior of the frame 31 and is inserted from the outside into the insertion hole 95.

[80] As shown in Hgure 10, in the finishing material that finishes the moving part 10, the first impact is absorbed by the impact absorbing part 11-3 when the moving part 10 is moved in the direction of the fixing part 11 and contacts therewith, and the second impact is absorbed by the cover 11-2 for thereby effectively preventing noises and damages.

[81] As shown in Hgure 11, the chain 50 is installed at the sprocket 36d on the shafts of the wheels 36 and 37. The chain 50 is configured to transfer a driving force through the idle gear 51 installed between the frame sprockets 36d, the driving gear 54 installed at the control part 20, and the tension gear 53. At this time, the chain 50 is connected with an inner side of the idle gear 51.

[82] The driving gear 54 and the tension gear 53 are fixed at the control bracket 55.

[83] The tension gear 53 rotates the eccentric shaft 53-2 based on a state of the chain 50 and changes the position of the same, so that it is possible to easily adjust the tensioning state of the chain 50.

[84] In addition, the rail 30 and the wheels 36 and 37 of the present invention may be achieved in various constructions.

[85] As shown in Hgure 15, the protrusion 1 of the rail 30 is formed in a rectangular shape, and the contacting portion of the wheel is formed in a rectangular shape. As shown in Hgure 16, a groove 30f is formed at an upper portion of the protrusion 1 of the rail 30, and a circular protrusion 36g is formed at a contacting portion of the wheel 36. The circular protrusion 36g is inserted into the groove 30f.

[86] As shown in Hgure 17, the protrusion 1 of the rail 30 is formed in a circular shape. A circular groove 36h is formed at a contacting portion of the wheel 36. The circular protrusion 1 is inserted into the circular groove 36h. As shown in Hgure 18, an opening 3 If is formed at the protrusion 1 of the rail 30, and a rectangular protrusion 36f is formed at a contacting portion of the wheel 36. The rectangular protrusion 36f is inserted into the opening 3 If.

[87] As shown in Hgure 19, an opening is formed at the protrusion 1 of the rail 30. A triangular protrusion 36j is formed at a contacting portion of the wheel 36. The triangular protrusion 36j is inserted into the opening 31g.

[88] As shown in Hgure 20, in this embodiment of the present invention, the floor part 80 is simply engaged between the rails 30. A fixing groove 81 is formed at a lower corner portion of the floor part 80. The circular protrusion 30d of the rail 30 is fixedly inserted into the fixing groove 81 of the floor part 80, so that it is possible to prevent a user from being caught by the rail and being fallen down.

[89] As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described examples are not limited by any of the details of the foregoing description, unless otherwise specified, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

[ 1 ] A mobile rack, comprising : a moving part that is movable in left and right directions, and is configured to store materials, and has a partition and a support at an intermediate portion; a fixing part that is fixed at one end of a rail based on an installation condition; a control part that is configured to move the moving part; a rail that is installed at the lower sides of the moving part and the fixing part for thereby moving the moving part in left and right directions; a stopping means that is installed at an end of the rail for stopping a movement of the moving part; a floor part that is inserted and assembled at an inner side between the rails; a wing part that is engaged to a lateral side of the rail; and a support bar that is foldably connected between the moving part and the fixing part.

[2] The rack of claim 1, wherein said support bar includes: a first support member that has a fixing protrusion at one end of the same for rotatably fixing to the moving part or the body of the fixing part, wherein a lower rotation part formed in a circular plate shape is provided at the other end of the same; and a second support member that has a fixing protrusion at one end of the same for rotatably fixing to the moving part or the body of the fixing part, wherein an upper rotation part formed in a circular plate shape is provided at the other end of the same, wherein the upper rotation part of the second support member is inserted into an upper side of the lower rotation part of the first support member, and the lower rotation part of the first support member and the upper rotation part of the second support member are engaged by an engaging member for thereby achieving a foldable construction based on the rotations of the upper and lower rotation parts.

[3] The rack of claim 1, wherein an engaging pin inserted into an engaging groove horixHitally formed at a lower side of the wing part is engaged with an engaging groove of the neighboring wing part.

[4] The rack of claim 1, wherein a cover having a hollow part is installed at the front portion of the moving part or the fixing part, and a smooth impact absorbing part is engaged at a front outer surface of the cover.

[5] The rack of claim 1, wherein said partition includes: a plurality of holes vertically formed at left and right sides of a partition formed in a panel shape; a hooker that is selectively inserted into the holes, wherein a support is placed thereon; and an edge part formed at both sides.

[6] The rack of claim 1, wherein a groove is formed at an upper portion of the protrusion of the rail, and a circular protrusion is formed at a contacting portion of the wheel, and the circular protrusion is inserted into the groove for thereby being moved.

[7] The rack of claim 1, wherein a protruded portion of the rail is formed in a circular shape, and a circular groove part is formed at a contacting portion of the wheel, and the circular protrusion is inserted into the circular groove part for thereby being moved.

[8] The rack of claim 1, wherein an opening is formed at a protruded portion of the rail, a rectangular protrusion is formed at a contacting portion of the wheel, and the rectangular protrusion is inserted into the opening for thereby being moved.

[9] The rack of claim 1, wherein an opening is formed at a protruded portion of the rail, and a triangular protrusion is formed at a contacting portion of the wheel, and the triangular protrusion is inserted into the opening for thereby being moved.

[10] The rack of claim 1, wherein said wing part is rotatably inserted into an outer circular protrusion of the rail.

[11] The rack of claim 1, wherein said stopping means includes: a rail stopper that has an insertion protrusion inserted into a groove of the rail, a plurality of holes formed in order for a screw to be engaged, and a slanted surface; and a nut that is inserted into the groove and the hole of the rail stopper.

[12] The rack of claim 1, wherein a plurality of holes are formed at both lower sides of the rail, and a plurality of horixHital degree adjusting supports are overlapped and inserted into the holes for thereby adjusting a horixHital degree.

[13] The rack of claim 1, wherein a connection part is fixed at an end portion of the rail for thereby continuously connecting other rails.

[14] The rack of claim 1, wherein a plurality of frames and a frame connection beam configured to connect the frames are provided at a lower side of the moving part.

[15] The rack of claim 14, wherein there is provided a falling prevention apparatus in which a fixture is installed in the interior of the frame, and a moving member is installed at the fixture wherein the moving member is movable in upper and lower directions, an elastic member having a certain recovering force connects the fixture and the moving member, and a falling prevention bracket is provided at a lower side of the moving member, and an engaging groove of the rail is inserted, and a pushing member is inserted between the moving member and the fixture for thereby maintaining a certain interval between the moving member and the fixture.

[16] The rack of claim 1, wherein a driving gear and a tension gear are installed at the control part, and a plurality of sprockets and idle gears are installed at the frame connection beam, and a chain is installed between the sprockets.

[17] The rack of claim 16, wherein said tension gear includes an eccentric shaft of which a center portion is eccentric.

[18] The rack of claim 16, wherein said chain is wound onto an outer side of the sprocket and an inner side of the idle gear.

[19] The ack of claim 1, wherein a groove of the floor part is inserted between a plurality of end protrusions for thereby fixing the floor part.

[20] The rack of claim 1, wherein said moving part is fixed by a stopper gear attached to a shaft of the control part and the stopper apparatus.

[21] The rack of claim 1, wherein said a concave groove is formed at a control box bracket of the control part for thereby inserting bearings therein, and a plurality of engaging protrusions formed at the control box bracket are inserted into a plurality of holes formed at the control panel fixed at the column.