Angle assembly capable of upside-down assembly

Abstract

The present invention relates to an angle assembly capable of upside-down assembly, in which: horizontal angles assembled over vertical angles having respective assembly holes spaced apart from each other in the longitudinal direction on two vertically bent surfaces thereof have assembly protrusions that are detachably inserted into the assembly holes of the vertical angles and protrude from each of two end portions of a vertical side plate, and each have a horizontal support plate that supports a shelf plate at the lower thereof and is bent at the upper end of the vertical side plate; and a first fitting slit is formed at the lower side of the assembly hole so as to communicate with same and a second fitting slit is formed at the upper side of the assembly hole so as to communicate with same and is spaced farther apart than the first fitting slit with respect to a bending line of the vertical angles, and thus, when assembled in a normal manner, the assembly protrusions of the horizontal angles are inserted into the first fitting slits of the vertical angles such that the corners of the shelf plate supported by the horizontal support plates can be assembled to be in contact with the inner surface of the vertical angles, and, when the vertical angles and the horizontal angles are assembled in an upside-down manner in accordance with the needs of a user, the assembly protrusions of the horizontal angles are inserted into the second fitting slits of the vertical angles such that the edges of the shelf plate supported by the horizontal support plates can be assembled to be supported by the inner surface of the vertical side plates of the horizontal angles.

Description

Angle assembly that can be assembled upside down

[0001] The present invention relates to a boltless assembly type angle assembly, which is formed by assembling a horizontal angle, which has a vertical angle having an assembly protrusion formed protrudingly on both ends of a vertical side plate, which is spaced apart in the longitudinal direction, and which is formed by removably fitting into the assembly holes of the vertical angle, and a horizontal support plate formed by bending the upper end of the vertical side plate to support a shelf plate from below, and more specifically, a first fitting slit is formed in communication on the lower side of the assembly hole, and a second fitting slit is formed in communication on the upper side of the assembly hole to be spaced apart from the first fitting slit based on the bending line of the vertical angle, so that in the case of a general assembly, the assembly protrusion of the horizontal angle is fitted into the first fitting slit of the vertical angle, and the corner side of the shelf plate supported by the horizontal support plate is assembled so as to be in contact with the inner surface of the vertical angle, and in the case of an upside-down assembly according to the needs of a user, the assembly protrusion of the horizontal angle is fitted into the second fitting slit of the vertical angle. The present invention relates to an angle assembly capable of being assembled upside down, in which the edge of a shelf plate supported by a horizontal support plate can be assembled so as to be supported by the inner surface of a vertical side plate of a horizontal angle.

[0002] Recently, general shelves, display cases, or storage cabinets are being manufactured in the form of angle assemblies made of relatively inexpensive and strong metal angles, rather than being manufactured from expensive materials such as wood.

[0003] This angle assembly is formed by connecting and assembling vertical angles corresponding to vertical supports with horizontal angles corresponding to horizontal connecting members, and shelf plates are installed on the horizontal angles and spaced apart from each other in multiple layers, so that various types of items can be easily displayed or loaded.

[0004] This type of angle assembly is formed by assembling a structure using fastening means such as bolts or nuts through fastening holes formed in vertical and horizontal angles, so it has excellent sturdiness, but it takes a long time for assembly or disassembly, and there is the inconvenience of having to use separate fastening means and assembly tools.

[0005] Recently, a technology related to a boltless assembly type angle assembly that enables quick and easy assembly is being developed, where a horizontal angle with a protrusion formed by bending a vertical angle formed by a perforation is assembled with each other without the need for fastening means such as bolts and nuts.

[0006] This boltless assembly angle assembly is formed by assembling horizontal angles with assembly holes spaced apart in the longitudinal direction on both sides of vertically bent vertically, and on both ends of vertical side plates, assembly projections that are detachably fitted into the assembly holes of the vertical angle are formed protrudingly, and on the upper end of the vertical side plate, a horizontal support plate that supports the shelf plate from below is formed by bending and assembling horizontal angles.

[0007] As an example of such a boltless assembly type angle assembly, Korean Patent Publication No. 10-2022-0162937 (published on December 9, 2022) comprises a vertical angle that is bent into an L-shape and arranged to face each other at the four corners while having slots formed at intervals in the longitudinal direction, a horizontal angle that has a protrusion formed by punching out and fitted into the slots of the vertical angles to be fastened, and a shelf mounted on the horizontal angle, and the slot formed in the vertical angle is formed by connecting a wide horizontal groove and a narrow vertical groove to each other, and at the same time, forming an inclined surface by interposing an arc surface from the vertical surfaces on both sides forming the vertical grooves, and the protrusion of the horizontal angle is formed by a connecting piece that protrudes integrally from the side of the punched portion and is formed in the vertical direction, and a supporting piece that is bent and extended from the connecting piece, and the vertical grooves that are arranged symmetrically with each other in the process of inserting the protrusion of the horizontal angle into the slot of the vertical angle. A boltless angle assembly is disclosed, which is configured to be able to hold left and right by applying a horizontal force to an arc surface where a horizontal groove and a vertical groove are connected while being spread left and right by an inclined surface as a connecting piece enters the inner portion.

[0008] In addition, Korean Patent Publication No. 10-2014-0134546 (published on November 24, 2014) discloses an assembly-type angle display stand comprising an angle column having a plurality of insertion grooves and through holes formed therein, and a connecting member having a fixing hook inserted into the insertion grooves, wherein the angle column has a through hole formed on one side of the insertion groove, and the connecting member has an insertion protrusion inserted into the through hole formed protruding on one side of the fixing hook.

[0009] In addition, Korean Patent Registration No. 10-1387645 (published on April 23, 2014) discloses an assembly angle comprising a pillar having a receiving groove and a support having a connecting projection inserted into and connected to the receiving groove, wherein the connecting projection includes a cut portion formed by cutting the body of the support, a connecting portion protruding from the cut portion and connected to the body, and a wing portion protruding from the connecting portion while the cut portion is formed, wherein the wing portion is characterized in that an end in the direction of joining is formed to protrude further than an end in the opposite direction.

[0010] However, as shown in the upper part of Fig. 7, the conventional boltless assembly type angle assembly can only be assembled so that the horizontal support plate (122) is positioned on the upper part of the horizontal angle (120) when the assembly protrusion of the horizontal angle (120) is fitted into the assembly hole of the vertical angle (110) and the corner side of the shelf plate (130) comes into contact with the inner surface of the vertical angle (110), so there is a concern that the items on the shelf plate (130) may slip and fall to the floor.

[0011] In order to prevent this, as shown in the lower part of Fig. 7, when assembling the horizontal angle (120) in an upside-down state so that the horizontal support plate (122) is positioned at the bottom of the horizontal angle (120) so that the vertical side plate (121) forms a kind of anti-separation catch, there is a problem that the edge of the shelf plate (130) does not settle on the horizontal support plate (122) of the horizontal angle (120) as the vertical side plate (121) of the horizontal angle (120) comes into contact with the inner surface of the vertical angle (110), and there is also a concern that the parts may be damaged in the process of settling the horizontal support plate (122) through forced assembly.

[0012] In addition, in the past, when the vertical angle (110) was assembled in an upside-down state, the shelf plate (130) was not fitted into the vertical angle (120), so it could not function as an angle for placing objects.

[0013] Accordingly, the present invention is formed by assembling a horizontal angle, which is formed by assembling a vertical angle on both sides of which are vertically bent and spaced apart in the longitudinal direction, and on both ends of a vertical side plate, an assembly projection that is detachably fitted into the assembly hole of the vertical angle is formed protrudingly, and a horizontal support plate that supports a shelf plate from below is formed by bending the upper end of the vertical side plate, and a first fitting slit is formed in communication on the lower side of the assembly hole, and a second fitting slit is formed in communication on the upper side of the assembly hole to be spaced apart more than the first fitting slit based on the bending line of the vertical angle, so that in the case of a general assembly, the assembly projection of the horizontal angle is fitted into the first fitting slit of the vertical angle, and the corner side of the shelf plate supported by the horizontal support plate is assembled so that it comes into contact with the inner surface of the vertical angle, and in the case of assembling the vertical angle and the horizontal angle upside-down according to the user's needs, the assembly projection of the horizontal angle is fitted into the second fitting slit of the vertical angle, and is supported by the horizontal support plate. The present invention is based on the task of providing an angle assembly capable of being assembled upside down, in which the edge of the shelf plate can be supported by the inner surface of the vertical side plate of the horizontal angle.

[0014] The above-described object of the present invention is achieved by providing an angle assembly capable of upside-down assembly, including a vertical angle having assembly holes spaced apart in the longitudinal direction on both vertically bent sides; and a horizontal support plate formed by bending and assembling both end sides across the vertical angle and supporting a shelf plate from below on the upper end of a vertical side plate, and an assembly protrusion formed by removably fitting into and engaging the assembly holes of the vertical angle on both end sides of the vertical side plate, wherein a first fitting slit, into which the assembly protrusion of the horizontal angle is fitted during normal assembly, is formed in communication with the lower side of the assembly hole of the vertical angle, and a second fitting slit, into which the assembly protrusion of the horizontal angle is fitted during upside-down assembly, is formed in communication with the upper side of the assembly hole of the vertical angle and is spaced apart from the first fitting slit more than the first fitting slit based on the bend line of the vertical angle.

[0015] According to a preferred feature of the present invention, during the general assembly in which the assembly protrusion of the horizontal angle is fitted into the first fitting slit of the vertical angle, the horizontal support plate is formed by bending at the upper end of the vertical side plate to support the shelf plate from below, and the corner side of the shelf plate can be assembled so as to be in contact with the inner surface of the vertical angle.

[0016] According to a preferred feature of the present invention, when the assembly protrusion of the upside-down horizontal angle is fitted into the second fitting slit of the upside-down vertical angle during the upside-down assembly, the horizontal support plate is formed by bending at the lower end of the vertical side plate to support the shelf plate from below, but the edge of the shelf plate can be supported by the inner surface of the vertical side plate of the horizontal angle.

[0017] According to a preferred feature of the present invention, the second fitting slit of the vertical angle can be spaced apart from the first fitting slit by a length corresponding to the thickness of the vertical side plate of the horizontal angle based on the bending line of the vertical angle.

[0018] According to a preferred feature of the present invention, the assembly holes of the vertical angle can be formed in two rows spaced apart in the left-right direction and spaced apart at regular intervals in the up-down direction.

[0019] According to a preferred feature of the present invention, a third fitting slit may be formed on the lower side of the assembly hole of the vertical angle so as to be connected to the second fitting slit at a position corresponding to the above, and a fourth fitting slit may be formed on the upper side of the assembly hole of the vertical angle so as to be connected to the first fitting slit at a position corresponding to the above.

[0020] According to a preferred feature of the present invention, a first up-and-down reversal display hole can be formed through both sides of the vertical angle.

[0021] According to a preferred feature of the present invention, the first up-and-down display hole may be formed as a “ㄱ” shaped hole or as a “↑” shaped hole.

[0022] According to a preferred feature of the present invention, the assembly protrusions of the horizontal angle can be formed by punching and bending a total of four, spaced apart in two rows in the left-right direction and spaced apart in two rows in the up-down direction.

[0023] According to a preferred feature of the present invention, the assembly protrusions of the horizontal angle may be formed to be bent outward with respect to the left-right center line, formed to be bent inward with respect to the left-right center line, formed to be bent all outward, or formed to be bent all inward.

[0024] According to a preferred feature of the present invention, a second up-and-down reversal display hole can be formed through both sides of the vertical side plate of the horizontal angle.

[0025] According to a preferred feature of the present invention, the second up-and-down display hole may be formed as a “ㄱ” shaped hole or as a “↑” shaped hole.

[0026] According to one embodiment of the present invention, an angle assembly capable of being assembled upside down is formed by assembling a vertical angle having assembly holes on both sides that are vertically bent and spaced apart in the longitudinal direction, and having assembly protrusions removably fitted into the assembly holes of the vertical angle on each end side of a vertical side plate, and a horizontal support plate that supports a shelf plate from below is formed by bending the upper end of the vertical side plate, and a first fitting slit is formed to be connected to the lower side of the assembly hole, and a second fitting slit is formed to be connected to the upper side of the assembly hole and spaced apart from the first fitting slit more based on the bend line of the vertical angle, so that the vertical angle and the horizontal angle can be assembled not only in a general assembly but also in an upside-down state as needed.

[0027] In particular, during general assembly, the assembly protrusion of the horizontal angle is fitted into the first fitting slit of the vertical angle, and the edge of the shelf plate supported by the horizontal support plate can be assembled so that it touches the inner surface of the vertical angle, and even during upside-down assembly according to the user's needs, the assembly protrusion of the horizontal angle is fitted into the second fitting slit of the vertical angle, and the edge of the shelf plate supported by the horizontal support plate can be assembled so that it is supported by the inner surface of the vertical side plate of the horizontal angle, so that there is an advantage in that the product can be prevented from being accidentally detached by the vertical side plate protruding upward around the edge of the horizontal support plate.

[0028] Figure 1 is a perspective view of a general assembly of an angle assembly capable of up-and-down reversal assembly according to one embodiment of the present invention.

[0029] Figure 2 is an exploded perspective view of a general assembly of an angle assembly capable of up-and-down reversal assembly according to one embodiment of the present invention.

[0030] Figure 3 is a perspective view of an angle assembly capable of upside-down assembly according to one embodiment of the present invention when upside-down assembly is performed.

[0031] Figure 4 is an exploded perspective view of an angle assembly capable of upside-down assembly according to one embodiment of the present invention, when assembled upside-down.

[0032] FIG. 5 is a drawing of various embodiments of an assembly hole of a vertical angle in an angle assembly capable of upside-down assembly according to one embodiment of the present invention.

[0033] FIG. 6 is a drawing of various embodiments of an assembly protrusion of a horizontal angle in an angle assembly capable of up-and-down reversal assembly according to one embodiment of the present invention.

[0034] Figure 7 is an explanatory drawing of the up-down reversal assembly state of a horizontal angle in a conventional angle assembly.

[0035] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, this description is intended to be sufficiently detailed to enable those skilled in the art to easily practice the invention, and is not intended to limit the technical spirit or scope of the present invention.

[0036] An angle assembly (1) capable of upside-down assembly according to one embodiment of the present invention includes a vertical angle (10) having assembly holes (11) spaced apart in the longitudinal direction on both sides that are vertically bent as shown in FIGS. 1 to 4, a horizontal angle (20) having both end sides assembled across the vertical angle (10) and a horizontal support plate (22) that supports a shelf plate (2) from below on the upper side of a vertical side plate (21) by being bent, and assembly protrusions (23) that are detachably fitted into and combined with the assembly holes (11) of the vertical angle (10) are each protruded on both end sides of the vertical side plate (21).

[0037]

[0038] Here, the vertical angle (10) corresponds to a vertical support for forming an angle assembly (1) capable of upside-down assembly according to one embodiment of the present invention, and is formed by vertically bending both sides along a bending line, and is mainly manufactured from a metal material such as steel.

[0039] On both sides of the vertical angle (10), assembly holes (11) are formed spaced apart in the longitudinal direction. The assembly holes (11) correspond to a type of boltless fastening hole into which the assembly projection (23) of the horizontal angle (20) described later is inserted and joined.

[0040] These assembly holes (11) may be formed in one row on each side along the vertical angle (10) and spaced apart at regular intervals in the vertical direction, but for stable assembly, it is preferable to form them in two rows spaced apart in the left-right direction on each side along the vertical angle (10) and spaced apart at regular intervals in the vertical direction. In the latter case, the assembly holes (11) in one row and the assembly holes (11) in the second row may have the same shape, but depending on the embodiment, they may be formed to be inverted in the vertical and left-right directions.

[0041] In addition, as shown in FIGS. 1 and 2, as well as in general assembly, as shown in FIGS. 3 and 4, in order to enable upside-down assembly with the vertical angle (10) and the horizontal angle (20) upside-down, it is preferable that a first fitting slit (12) into which the assembly protrusion (23) of the horizontal angle (20) is fitted during general assembly is formed in communication on the lower side of the assembly hole (11), and a second fitting slit (13) into which the assembly protrusion (23) of the horizontal angle (20) is fitted during upside-down assembly is formed in communication on the upper side of the assembly hole (11) at a greater distance than the first fitting slit (12) based on the bending line of the vertical angle (10).

[0042] At this time, it is preferable that the second fitting slit (13) of the vertical angle (10) be formed to be spaced apart from the first fitting slit (12) by a length corresponding to the thickness of the vertical side plate (21) of the horizontal angle (20) based on the bending line of the vertical angle (10).

[0043] In addition, in order to enable assembly regardless of whether it is inverted, in addition to the general assembly as shown in FIGS. 1 and 2 and the upside-down assembly as shown in FIGS. 3 and 4, as shown in FIG. 5, a third fitting slit (14) may be formed in communication with the second fitting slit (13) at a position corresponding to the lower side of the assembly hole (11) of the vertical angle (10), and a fourth fitting slit (15) may be formed in communication with the first fitting slit (12) at a position corresponding to the upper side of the assembly hole (11) of the vertical angle (10).

[0044] In addition, it is preferable that a first up-down inversion indicator hole (16) be formed through both sides of the vertical angle (10) to indicate whether the vertical angle (10) is up-down inverted.

[0045] The first up-and-down inversion display hole (16) can be formed as a “ㄱ” shaped hole. In this case, when the first up-and-down inversion display hole (16) is in the “ㄴ” shape, it can be seen that the vertical angle (10) is up-and-down inverted.

[0046] In addition, the first up-and-down inversion display hole (16) can be formed as a through hole in the shape of an "↑". In this case, it can be seen that the vertical angle (10) is up-and-down inverted when the first up-and-down inversion display hole (16) is in the shape of a "↓".

[0047] In addition, the first up-and-down inversion hole (16) can be formed as a hole of a different shape when up-and-down reversed from its original shape, in addition to a “ㄱ” or “↓” shaped hole.

[0048]

[0049] The two ends of the horizontal angle (20) are assembled across the aforementioned vertical angle (10) without the intervention of fastening means such as bolts and nuts.

[0050] The horizontal angle (20) corresponds to a connecting fixing member that connects and fixes the vertical angles (10) to each other, and also corresponds to a support member that supports the edge of the shelf plate (2) from below. It has a shape in which a horizontal support plate (22) that supports the shelf plate (2) from below is bent and formed on the upper side of the vertical side plate (21) that is connected and assembled to the vertical angle (10).

[0051] At this time, it is preferable that both ends of the horizontal support plate (22) be angled at a 45 degree angle so as to be in contact with the horizontal support plate (22) of the adjacent horizontal angle (20).

[0052] In addition, assembly projections (23) that are detachably fitted into and connected to the assembly holes (11) of the vertical angle (10) are formed protrudingly on both ends of the vertical side plate (21).

[0053] These assembly protrusions (23) are formed to correspond to the left and right rows of assembly holes (11) of the vertical angle (10) in the left and right direction so that the horizontal angle (20) can be assembled in a height-adjustable manner relative to the vertical angle (10), but it is preferable that they are formed in a number that is much smaller than the number of assembly holes (11) of the vertical angle (10) in the up and down direction.

[0054] It is preferable that the assembly protrusions (23) are formed by punching and bending a total of four, spaced apart in two rows in the left-right direction and two rows in the top-down direction, in particular. In this case, the assembly protrusions (23) may be formed by punching and bending outward with respect to the left-right center line as shown in Fig. 6, may be formed by punching and bending inward with respect to the left-right center line, may be formed by punching and bending outward, or may be formed by punching and bending all inward.

[0055] In addition, it is preferable that a second up-down inversion indicator hole (24) be formed through both sides of the vertical side plate (21) of the horizontal angle (20) to indicate whether the horizontal angle (20) is up-down inverted.

[0056] The second up-and-down inversion display hole (24) can be formed as a “ㄱ” shaped hole. In this case, when the second up-and-down inversion display hole (26) is in the “ㄴ” shape, it can be seen that the horizontal angle (20) is up-and-down inverted.

[0057] In addition, the second up-and-down inversion display hole (24) can be formed as a through hole in the shape of an "↑". In this case, it can be seen that the horizontal angle (20) is up-and-down inverted when the second up-and-down inversion display hole (24) is in the shape of a "↓".

[0058] In addition, the second up-and-down reversal display hole (24) can be formed as a hole of a different shape when up-and-down reversed from its original shape, in addition to a “ㄱ” or “↓” shaped hole.

[0059] Hereinafter, with reference to FIGS. 1 to 6, the assembly and operation thereof of an angle assembly (1) capable of up-and-down reversal assembly according to one embodiment of the present invention will be described as follows:

[0060] In the case of an angle assembly (1) capable of upside-down assembly according to one embodiment of the present invention, an assembly protrusion (23) that is detachably fitted into the assembly hole (11) of the vertical angle (10) is formed protrudingly on both ends of a vertical side plate (21) across a vertical angle (10) that is spaced apart in the longitudinal direction, and a horizontal support plate (22) that supports the shelf plate (2) from below is formed by folding and assembling the horizontal angle (20) on the upper end of the vertical side plate (21), and a first fitting slit (12) is formed to be in communication with the lower side of the assembly hole (11), and a second fitting slit (13) is formed to be in communication with the upper side of the assembly hole (11) to be spaced apart from the first fitting slit (12) based on the bending line of the vertical angle, so that not only general assembly but also assembly with the vertical angle (10) is possible as needed. The horizontal angle (20) can be assembled by turning it upside down.

[0061] In the general assembly of the vertical angle (10) and the horizontal angle (20) as shown in FIGS. 1 and 2, the assembly projections (23) on both end sides of the horizontal angle (20) are assembled so that they fit into the first fitting slit (12) of the vertical angle (10) which is formed closer to the bending line of the vertical angle (10) than the second fitting slit (13) of the vertical angle (10), so that the gap between the two vertical angles (10) is narrower than when the vertical angle (10) and the horizontal angle (20) are assembled upside down.

[0062] At this time, the horizontal support plate (22) of the horizontal angle (20) is bent horizontally on the upper side of the vertical side plate (21) of the horizontal angle (20) to support the shelf plate (2) from below, but is assembled so that only the corner side of the shelf plate (2) comes into contact with the inner surface of the vertical angle (10).

[0063] In this case, there is an advantage in that it is easy to load items onto or remove items from the shelf plate (2) because no anti-slip protrusion is formed on the edge of the shelf plate (2), but there is a disadvantage in that if the item slips against the shelf plate (2), it may fall to the floor and be damaged.

[0064] In addition, as shown in FIGS. 3 and 4, when the vertical angle (10) and the horizontal angle (20) are assembled upside down, the assembly projection (23) of the upside-down horizontal angle (20) is assembled so that it fits into the second fitting slit (13) of the vertical angle (10) which is formed further away from the bending line of the vertical angle (10) than the first fitting slit (12) of the vertical angle (10), so that the gap between the two vertical angles (10) is wider than when the vertical angle (10) and the horizontal angle (20) are normally assembled.

[0065] At this time, the horizontal support plate (22) of the horizontal angle (20) is formed by being bent horizontally at the bottom of the vertical side plate (21) to support the shelf plate (2) from below, and is assembled so that the entire edge of the shelf plate (2) is supported by the inner surface of the vertical side plate (21) of the horizontal angle (20).

[0066] In this case, there is a disadvantage that it is somewhat inconvenient to load items onto or remove items from the shelf plate (2) because a drop-prevention step is formed at the edge of the shelf plate (2) by the vertical side plate (21) of the horizontal angle (20), but there is an advantage that items are prevented from being damaged by randomly dropping from the shelf plate (2).

[0067] Although the embodiments described above are illustrative, it will be apparent to those skilled in the art that the present invention can be embodied in many other forms without departing from the spirit and scope thereof. Therefore, the above-described embodiments should be considered illustrative rather than restrictive, and all embodiments falling within the scope of the appended claims and their equivalents are intended to be included within the scope of the present invention.

[0068] The angle assembly according to the present invention can be used in the field of furniture technology, including display cases, shelves, etc.

Claims

1. A vertical angle (10) with assembly holes (11) spaced apart in the longitudinal direction on both sides of the vertically folded surface; and A horizontal support plate (22) is formed by bending the upper end of the vertical side plate (21) to support the shelf plate (2) from below, and the horizontal angle (20) is formed by protruding on both end sides of the vertical side plate (21) so that the assembly protrusion (23) is detachably fitted into the assembly hole (11) of the vertical angle (10), and is assembled. An angle assembly capable of upside-down assembly, wherein a first fitting slit (12) into which an assembly projection (23) of the horizontal angle (20) is fitted is formed in communication on the lower side of the assembly hole (11) of the vertical angle (10) during normal assembly, and a second fitting slit (13) into which an assembly projection (23) of the horizontal angle (20) is fitted is formed in communication on the upper side of the assembly hole (11) of the vertical angle (10) during upside-down assembly, and is formed further apart from the first fitting slit (12) based on the bending line of the vertical angle (10).

2. In claim 1, An angle assembly capable of upside-down assembly, characterized in that, during the general assembly in which the assembly protrusion (23) of the horizontal angle (20) is fitted into the first fitting slit (12) of the vertical angle (10), the horizontal support plate (22) is formed by bending at the upper end of the vertical side plate (21) to support the shelf plate (2) from below, and the corner side of the shelf plate (2) is assembled so as to be in contact with the inner surface of the vertical angle (10).

3. In claim 1, An angle assembly capable of upside-down assembly, characterized in that, when the assembly projection (23) of the upside-down horizontal angle (20) is fitted into the second fitting slit (13) of the upside-down vertical angle (10), the horizontal support plate (22) is formed by bending at the lower end of the vertical side plate (21) to support the shelf plate (2) from below, but the edge of the shelf plate (2) is supported by the inner surface of the vertical side plate (21) of the horizontal angle (20).

4. In claim 1, An angle assembly capable of upside-down assembly, characterized in that the second fitting slit (13) of the vertical angle (10) is spaced apart from the first fitting slit (12) by a length corresponding to the thickness of the vertical side plate (21) of the horizontal angle (20) based on the bending line of the vertical angle (10).

5. In any one of claims 1 to 4, An angle assembly capable of up-and-down reversal assembly, characterized in that the assembly holes (11) of the above vertical angle (10) are formed in two rows spaced apart in the left-right direction and spaced apart at regular intervals in the up-and-down direction.

6. In any one of claims 1 to 4, An angle assembly capable of upside-down assembly, characterized in that a third fitting slit (14) is formed in communication with the second fitting slit (13) at a position corresponding to the lower side of the assembly hole (11) of the vertical angle (10), and a fourth fitting slit (15) is formed in communication with the first fitting slit (12) at a position corresponding to the upper side of the assembly hole (11) of the vertical angle (10).

7. In any one of claims 1 to 4, An angle assembly capable of up-and-down assembly, characterized in that a first up-and-down inversion display hole (16) is formed through both sides of the vertical angle (10).

8. In claim 7, An angle assembly capable of upside-down assembly, characterized in that the first upside-down display hole (16) is formed as a “ㄱ” shaped hole or a “↑” shaped hole.

9. In any one of claims 1 to 4, An angle assembly capable of upside-down assembly, characterized in that the assembly protrusions (23) of the above horizontal angle (20) are formed by punching and bending a total of four, spaced apart in two rows in the left-right direction and spaced apart in two rows in the up-down direction.

10. In claim 9, An angle assembly capable of upside-down assembly, characterized in that the assembly protrusions (23) of the horizontal angle (20) are formed to be bent outward with respect to the left-right center line, or are formed to be bent inward with respect to the left-right center line, or are formed to be bent all outward, or are formed to be bent all inward.

11. In any one of claims 1 to 4, An angle assembly capable of up-and-down assembly, characterized in that a second up-and-down inversion display hole (24) is formed through both sides of the vertical side plate (21) of the horizontal angle (20).

12. In claim 11, An angle assembly capable of upside-down assembly, characterized in that the second upside-down display hole (24) is formed as a “ㄱ” shaped hole or an “↑” shaped hole.

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