KR102155891B1 - Expandable interior shelf assembly - Google Patents

Abstract

The present invention relates to a prefabricated shelf having a purpose of displaying, exhibiting or preserving various kinds of objects, which comprises: a rectangular vertical tube body having at least two surfaces on which connection slits are repetitively formed in a lengthwise direction; a locking fastener coupled to the rectangular vertical tube body; a horizontal tube body connecting the vertical tube bodies in a traverse direction; and a connection fixture coupled to each of both tip ends of the horizontal tube body to be coupled to the locking fastener. The present invention can assemble the horizontal tube body with respect to the vertical tube body rapidly and conveniently, also can maintain a mutually robust and strong fixation state to maintain a very stable installation state even when a heavy object is stacked and displayed or preserved, can be easily assembled or dissembled by anybody, even an unskilled person, because other special assembling and coupling tools are unnecessary, can create an interior effect as well as decorative features to be used for indoor shelf furniture because connection portions between the rectangular tube bodies or the connection slits formed on the vertical tube body are never exposed to a front side and an outer side, and can connect and expand the prefabricated shelf in various directions according to a direction of forming the connection slits with respect to the rectangular vertical tube body to have excellent efficiency.

Description

Expandable interior shelf assembly with elastic locking assembly structure

The present invention relates to a prefabricated shelf for the purpose of display, display, or storage of various items, and more particularly, a locking hole coupled to a connecting slit of a vertical tube installed in all directions, and connecting the vertical tube to each other. A shelf for simple loading of goods by preventing the connection slit for mutual assembly from being exposed to the outer surface as well as ensuring a simple and robust connection and fixation between the vertical pipe and the horizontal pipe through the connection fasteners connected to each end of the horizontal pipe body. Rather, it is about an expandable interior shelf that can be used as shelf furniture that creates decorativeness and luxury.

In general, a prefabricated shelf refers to an angle of metal that is bent in a "b" shape, vertically, and then these vertical angles are also connected in a horizontal direction using an angle of a "b" shape. It is made by placing a square plate on the wall, and it is used by assembling shelves of various sizes and multiple stages.

Such prefabricated shelves are easy to assemble and disassemble and are relatively inexpensive and are widely used for loading or storing various items or materials.

In addition, in recent years, the fastening structure and assembly structure for the prefabricated shelf as described above are being improved to have more excellent efficiency. As shown in Utility Model Registration No. 20-0473407, the horizontal frame and the vertical frame are connected in various directions. In the prefabricated angle shelf that assembles to form a shelf, the assembling part is rigid and the assembled state is not easily shaken. The assembling part of the horizontal frame and the vertical frame is simple, so that even general users without specialized knowledge can easily assemble it. An assembly type angle shelf with a new assembly method that can be disassembled and used in various ways to suit the installation environment has been devised and registered.

Subsequently, as in Patent No. 10-1514350, a vertical member consisting of two bent portions bent at right angles and having a plurality of binding bars protruding inward by press processing at equal intervals inside each bent portion, and two In order to connect the vertical member horizontally, an opening hole having a width greater than the width of the binding rod of the vertical member is formed at the connection portion with connection portions at both ends, and inserted into the binding rod of the vertical member at the upper side of the opening hole. And a horizontal member having a first connection tab and a second connection tab aligned with the first connection tab formed below the connection part, and the first connection of the connection part when connecting the horizontal member to the vertical member An angle shelf in which a tab and the second connection tab are inserted into the upper and lower two binding tables formed on the bent portion of the vertical member has been devised and registered.

In addition, a plurality of posts that are erected and arranged in a front, rear, and left and right rectangles as in Patent No. 10-1576506 and having a plurality of hook holes; A shelf hanger coupled to the hanger hole of the post to form a support frame for storing articles together with the post; It is supported by the shelf hanger and is arranged in a plurality along the vertical direction, and includes a shelf forming a multi-stage loading portion for placing and supporting an article on the support frame, and the post is a pair of parallel to each other at both ends of the connecting support post piece It is composed of a bar-shaped supporting post piece, so that the posts arranged in the front and rear positions are supported while the posts are erected in the longitudinal direction in the front and rear positions and the left and right positions. The post pieces are arranged to face each other, and the hanger pieces of the shelf hanger extend in a direction crossing the length direction at both ends of the front left and right posts and the rear left and right posts in the hook holes of the support post pieces facing each other. The shelf hanger is inserted so as to be arranged in parallel with the front and rear directions of the support frame, and the shelf is mounted on the shelf hanger to which the front end and the rear end are connected to the post.

Subsequently, in an angle shelf frame consisting of a vertical support in which a plurality of coupling holes are vertically arranged in an angle shape as in Korean Patent Application Publication No. 10-2018-0131781, and a horizontal support inserted and guided and fixed in the coupling hole of the vertical support, As the horizontal support is formed integrally with an upper fixing plate and a lower fixing plate having fasteners inserted into the coupling holes, and a support bent portion bent between the upper fixing plate and the lower fixing plate to place the shelf on the horizontal support, An angle shelf frame that has the effect of preventing the shelves and objects from falling due to the load of the shelves and the storage objects on which they are seated, and preventing the objects from falling due to shaking caused by external impacts, is constructed and It has been registered.

However, the prefabricated shelf including the conventional angle shelf is not utilized as an indoor shelf furniture because the shelf frame, that is, the repetitive fastening hole formed on the angle is exposed to the outside as it is, so it lacks decoration and is not good in terms of aesthetics. In order to fasten and assemble these angles or frames, there is a problem in that assembly and manufacturing convenience are extremely poor, such as having to use a separate tool.

In addition, in order to prevent the above fastening hole from being exposed to the outer surface, a separate cover may be used or it may be manufactured in the form of an extruded steel formed only on the inner surface, but in this case, it is not economical due to the increase in production cost due to the additional production of components. It is not easy to handle and assembles, as well as weakening the fixing force between each other, it has a disadvantage that does not satisfy the function as a shelf.

In addition, the existing prefabricated shelf can only be manufactured as a single unit in a square shape on the plane.Since it does not have any expandability in all directions using vertical angles or vertical posts, the prefabricated shelf of several objects is manufactured separately. These prefabricated shelves have to be installed in a row or connected and fixed through separate fastening means, which is extremely unreasonable in terms of expandability.

Korea Registered Utility Model 20-0473407 (2014.06.25.Registration) Korean Patent Registration 10-1514350 (Registered on April 16, 2015) Korean Patent Registration 10-1576506 (registered on December 4, 2015) Republic of Korea Patent Publication 10-2018-0131781 (published on Dec. 11, 2018)

The present invention is to improve the problems as described above, and a rectangular vertical tube having at least two or more connecting slits formed repeatedly along the longitudinal direction and a locking fastener coupled to the vertical tube; As constituted by a horizontal pipe connecting the vertical pipe in the transverse direction and a connection fixing member that is coupled to both ends of the horizontal pipe and is bound to the locking hole,

It is possible to connect and fix the horizontal pipe to the vertical pipe in a desired direction and a desired height simply and powerfully by using the locking hole and the connection fixing hole, and at the same time, the connecting slit is not exposed toward the outer surface. It is an object of the present invention to provide an expandable interior shelf having a resilient locking assembly structure that can be utilized.

The present invention for achieving the object as described above, and a rectangular vertical tube formed on at least two sides of a pair of left and right connecting slits that are repeatedly formed up and down along the longitudinal direction; A locking hole having a locking support portion inserted into the connection slit on one side; A horizontal pipe connecting vertical pipes spaced apart from each other in the transverse direction; A connection fixing device that is inserted and fixed to both ends of the horizontal pipe body so as to be elastically held with the locking hole; Consisting of a shelf panel placed on the horizontal tube,

A receiving groove for inserting the locking hole is formed on the bottom of the connection fastener, and an elastic locking piece with a locking protrusion formed on one side of the lower end is protruded inside the receiving groove, so that the locking hole is formed into the receiving groove of the connection fastener. When inserted, one lower end of the locking hole on the locking jaw is mutually locked, and the vertical tube and the horizontal tube are connected and fixed to each other.

In the present invention, the assembly of the horizontal pipe to the vertical pipe can be quickly and conveniently performed, as well as maintaining a mutually strong and strong fixed state, so that a very stable installation state can be maintained even when loading, displaying or storing a heavy body, Since no separate assembly and fastening tools are required, even unskilled personnel can easily assemble and disassemble, and the connection between each square tube or the connecting slit formed in the vertical tube is not exposed to the front and exterior at all, so it is not only decorative but also interior By creating an effect, it can be used as indoor shelf furniture, and it is very efficient because the prefabricated shelf can be connected and expanded in various directions according to the direction of formation of the connecting slit for the rectangular vertical tube.

1 is an overall perspective view of an expandable interior shelf according to the present invention
Figure 2 is a perspective view of the frame of the expandable interior shelf according to the present invention
Figure 3 is an enlarged perspective view of the tube body connection part of the expandable interior shelf according to the present invention
Figure 4 is a bottom perspective view of the tube body connection part of the expandable interior shelf according to the present invention
Figure 5 is an exploded perspective view of the tube body connector of the expandable interior shelf according to the present invention
Figure 6 is a cross-sectional view of the tube body connector separation of the expandable interior shelf according to the present invention
7 is a process diagram of assembling a locking hole for a vertical tube of an expandable interior shelf according to the present invention
Figure 8 is a horizontal pipe coupling process to the locking hole of the expandable interior shelf according to the present invention
9 is a detailed view of a process of coupling a connection fixing tool to a locking hole of an expandable interior shelf according to the present invention
Figure 10 is a cross-sectional view of the action of the elastic clamping piece of the connection fixture in the state of Figure 9
Figure 11 is a cross-sectional view of the connection fixing unit coupling state to the locking hole of the expandable interior shelf according to the present invention
12 is an expanded connection state and partial detailed view of the expandable interior shelf according to the present invention

Additional objects, features, and advantages of the present invention may be more clearly understood from the following detailed description and accompanying drawings.

Prior to the detailed description of the present invention, the present invention is capable of various modifications and various embodiments, and the examples described below and shown in the drawings are intended to limit the present invention to specific embodiments. It should be understood as including all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

In addition, when a component is referred to as being "connected" or "connected" to another component, it may be directly connected or connected to the other component, but other components may exist in the middle. It should be understood that there is. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in the middle.

Subsequently, the terms used in the present specification are used only to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or a combination thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance.

In addition, terms such as "... unit", "... unit", and "... module" described in the specification mean a unit that processes at least one function or operation, which is hardware, software, or hardware and It can be implemented as a combination of software.

In addition, in the description with reference to the accompanying drawings, the same reference numerals are assigned to the same components regardless of the reference numerals, and redundant descriptions thereof will be omitted. In describing the present invention, when it is determined that a detailed description of related known technologies may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an overall perspective view of an expandable interior shelf according to the present invention, FIG. 2 is a perspective view of a frame of an expandable interior shelf according to the present invention, and FIG. 3 is an enlarged perspective view of a tube body connection part of the expandable interior shelf according to the present invention, and FIG. A perspective view of the bottom of the tube body connection part of the expandable interior shelf according to the present invention, FIG. 5 is an enlarged perspective view of the tube body connection part of the expandable interior shelf according to the present invention, and FIG. 6 is a separate cross-sectional view of the tube body connection part of the expandable interior shelf according to the present invention.

As shown in the figure, the interior shelf according to the present invention is composed of a vertical bar installed in all directions, a crossbar connecting these vertical bars, and a shelf panel placed using the crossbar, as in the conventional prefabricated angle shelf. It is made using a rectangular horizontal tube 40, 40' of the same size as the vertical tube 10, 10' of, and after installing the vertical tube 10, 10' in all directions, Shelf panels 60, 60' having various thicknesses and shapes on the horizontal pipes 40, 40' while the pipes 10, 10' are connected and fixed with the horizontal pipes 40, 40' The interior shelf of the present invention can be completed by mounting and fixing it.

That is, the vertical pipes 10 and 10 ′ are made by continuously extruding metal or synthetic resins, and the rectangular vertical pipes 10 and 10 ′ have one left and right penetrating inside and outside. The pair of connecting slits 11 and 11' are formed in a row repeatedly along the vertical direction of the upper and lower sides.

The length of the vertical pipes 10 and 10' in the vertical direction will serve as an element that determines the overall height of the interior shelf, and is repeatedly formed in the vertical pipes 10 and 10'. The connecting slit 11, 11', which is present, acts as an element that determines the connection height of the horizontal pipes 40, 40', so that the number and height of the shelves can be arbitrarily applied to assemble them.

Accordingly, as a configuration for connecting and fixing the vertical pipes 10 and 10' and the horizontal pipes 40 and 40' to each other, the connecting slits 11 and 11 of the vertical pipes 10 and 10' It consists of a locking fastener 20 that is coupled using') and a connection fastener 50 that is inserted into the end of the horizontal tube 40, 40'.

In more detail, the locking hole 20 is made by bending a metal plate in a "c" shape, and a connection support part 22 will be formed in the middle of the bent metal plate, and the connection support part ( The horizontal support portions 23 and 23 ′ are formed parallel to each other in a perpendicular direction from both sides of 22), and the locking support portions 21 and 21 ′ are formed in the upward direction from the ends of the horizontal support portions 23 and 23 ′. It is formed by protruding.

In particular, a locking protrusion 24 is formed at a side end of the locking support part 21 and 21 ′ toward the connection support part 22, and a downward opening at the bottom of the horizontal support part 23 and 23 ′. The locking groove 25 is formed, and the vertical end surface of the locking protrusion 24 and the inner side of the locking groove 25 must be made to be located on the same vertical line.

Subsequently, the width of the engaging portions 21 and 21 ′ including the locking protrusions 24 is smaller than the upper and lower widths of the connecting slits 11 and 11 ′ of the vertical pipes 10 and 10 ′. It has to be able to be easily inserted into the connecting slit (11) (11'), and the upper and lower widths of the horizontal support (23) (23') are The horizontal support part 23, 23' in the state inserted into the connecting slit 11, 11' is not necessary in the connecting slit 11, 11' because it is made in a shape that is the same as the upper and lower widths or slightly smaller. It would be ideal to avoid excessive upward and downward flow.

In addition, the connection fastener 50 coupled to the ends of the horizontal pipes 40 and 40 ′ has a receiving groove 51 into which one side of the locking fastener 20 is inserted into the lower side. In the receiving groove 51, a downward elastic locking piece 52 protrudes, and a locking jaw 53 is protruding from the lower end of the elastic locking piece 52, and the connection Fitting grooves 54 and 54 ′ penetrating the receiving groove 51 are formed on the front surface of the fixture 50 to be spaced apart from the left and right.

Accordingly, while the horizontal support portions 23 and 23 ′ on both sides of the locking hole 20 are inserted through the fitting grooves 54 and 54 ′, the connection support part of the locking hole 20 into the receiving groove 51 ( One side of the horizontal support (23) (23') including 22) can be inserted, and the elastic locking piece (52) in the receiving groove (51) is the connection support (22) of the locking hole (20) inserted into the inside As the locking protrusion 53 is elastically coupled to the lower end, the locking fastener 20 and the connection fixing member 50 may be firmly coupled and fixed to each other.

At this time, the connection support portion 22 of the locking hole 20 is formed in an inclined shape, and the elastic locking piece 52 in the receiving groove portion 51 of the connection fixing member 50 is also inclined of the connection support portion 22 As it is configured in an inclined shape to match the direction, the connection fixing member 50 of the horizontal pipe body 40, 40' is coupled downward with respect to the locking fastener 20 coupled to the vertical pipe body 10, 10'. In the process of interfering with the locking protrusion 53 of the elastic locking piece 52 from the inner end of the connection support 22 of the locking fastener 20, the connection fixing tool 50 is vertically piped by mutual oblique interference. (10) By moving in close contact with the direction of (10') and configured to be coupled, the horizontal pipes 40 and 40' with respect to the vertical pipes 10 and 10' can be more strongly tightly fixed.

In addition, repeated interference protrusions 54 and 54 ′ are formed on the outer surface of the connection fixing tool 50, and one end of the connection fixing tool 50 has the horizontal pipe body 40, 40 ′. The locking projection 55 having the same outer periphery is protruding, and when the connection fixing member 50 is inserted into the end of the horizontal tube 40, 40', the locking projection 55 causes interference. A rigid coupling and fixing of the force-fitting type is made, and the locking projection 55 serves to prevent the connection fixing device 50 from being unnecessarily inserted deep into the interior of the horizontal pipes 40 and 40 ′.

In particular, a cut-out groove 41 is formed so that the receiving groove 51 of the connection fixing device 50 is exposed below the ends of the horizontal pipe bodies 40 and 40 ′ as described above, and the horizontal pipe body When the connection fixing tool 50 is inserted and fixed at the end of 40 (40'), the receiving groove 51 of the connection fixing tool 50 is exposed through the cutout groove 41 of the horizontal pipe body 40, 40' It is to be, by using the receiving groove 51 of the locking hole 20 and can be coupled and fixed.

Thus, the process of assembling the expandable interior shelf of the present invention using the vertical pipe body 10 (10 ′), the locking hole 20 and the horizontal pipe body 40 (40 ′) and the connection fixing member 50 as described above will be described in detail. I want to.

First, as shown in FIG. 7, insert the locking hole 20 into the connecting slit 11 and 11 ′ having a desired height among the connecting slit 11 and 11 ′ of the vertical tube 10 and 10 ′. And combine.

That is, the locking support portion 21, 21' and the horizontal support portion 23, 23' of the locking hole 20 are slightly inclined upward so that they can be inserted into the inner side of the connecting slit 11, 11'. After inserting in the state, the locking hole 20 is lowered so that the thickness of the lower end of the connection slit 11 and 11 ′ can be inserted into the locking groove 25 of the horizontal support part 23 and 23 ′. When the thickness of the vertical tube 10 and 10 ′ is inserted into the locking groove 25, the locking hole 20 is temporarily fixed at the same time as the locking support 21, 21 ′. The locking protrusion 24 of one side is in contact with the inner surface of the vertical pipes 10 and 10'.

Subsequently, when the horizontal pipes 40 and 40 ′ in a state in which the connection fasteners 50 are coupled to the ends are coupled downward in the direction shown in FIG. 8, the reception of the connection fasteners 50 as shown in FIG. 9 One side of the locking fastener 20 is inserted into the groove 51, and the horizontal support portions 23 and 23' of the locking fastener 20 are fitting grooves 54 formed on both front sides of the connection fixing tool 50 It is guided to (54') and the connection support 22 of the locking hole 20 is inserted into the receiving groove 51.

In particular, in the coupling process as described above, the downward elastic locking piece 52 in the receiving groove 51 of the connection fastener 50 has a locking protrusion 53 on one side of the connecting support part 22 of the locking fastener 20 ) To cause interference with the inner tip, due to the interference with the connection support portion 22 to the locking projection 53 of the elastic locking piece 52 as described above, the connection fixture 50 and the horizontal tube 40, 40' ) Is moved in a close contact direction toward the outer surface of the vertical pipes 10 and 10' and is coupled downward.

At this time, the elastic locking piece 52 is moved downward along the inclined surface formed on the connection support portion 22 of the locking hole 20 as shown in FIG. 10, and the connection fixing member 50 and the horizontal pipe body 40, 40 ') is moved to the vertical pipe body 10, 10' in close contact, and at the same time, it is moved downward while being retracted and bent by the thickness of the locking projection 53, and connected to the horizontal pipe body 40, 40' by the assembler. As soon as the locking protrusion 53 passes through the lower end of the connection support 22 through continuous pressurization on the fixture 50, the elastic locking piece 52, which was bent retreat, quickly returns to its original shape, while FIG. 11 As shown in the figure, the locking protrusion 53 may be elastically held at the lower end of the connection support part 22.

Accordingly, the horizontal pipe body 40, 40' and the connection fixing member 50 are directed toward the vertical pipe body 10, 10' along the inclination angle of the connection support part 22 of the locking hole 20. It is to be coupled downward while moving in the close contact direction, and the elastic locking piece 52 and the locking jaw 53 in the connection fixing tool 50 are firmly coupled and fixed with the connection support 22 of the locking fastener 20 By doing so, the horizontal pipes 40 and 40 ′ with respect to the vertical pipes 10 and 10 ′ can be firmly fixed in close contact with each other.

Therefore, the expandable interior shelf of the present invention is a horizontal pipe body 40, 40' in a state in which the connection fixture 50 is coupled to the vertical pipe body 10, 10' in the state in which the locking hole 20 is inserted. By simply pressing downwards, a solid, close and fixed state can be produced, so assemble to the shelf frame is very excellent, as well as a combination between vertical pipes (10) (10') and horizontal pipes (40) (40'). At the same time, the gap is hardly generated, and the connecting slits 11 and 11 ′ formed in the vertical pipes 10 and 10 ′ are not exposed to the front and the outer surfaces at all, so the appearance is very beautiful.

After assembling the horizontal pipes 40 and 40 ′ to a desired height with respect to the vertical pipes 10 and 10 ′ installed in all directions through the assembly process, the horizontal pipes 40 and 40 ′ As the interior shelf of the present invention can be completed by placing the shelf panels 60 and 60' on the top, it can be used as a shelf furniture for interior decoration, so it is not limited to the purpose of loading materials, etc. It can also fulfill its role as an exhibition and storage furniture.

Moreover, the interior shelf of the present invention has expandability in various directions as necessary, and the connecting slits 11 and 11 ′ formed on the vertical pipes 10 and 10 ′ are formed on the four sides of the square tube. It can produce excellent expandability by forming it in various ways on the construction surface in the desired direction.

That is, in the case of forming the connecting slits 11 and 11 ′ on two surfaces of the vertical pipes 10 and 10 ′ arranged at right angles as shown in FIG. 12, the horizontal pipes 40 and 40 ( 40') can be fixed, and when connecting slits (11) (11') are formed on three of the four sides of the vertical pipe (10) (10') for expansion in one direction, three sides It is possible to connect and fix the horizontal pipes 40 and 40 ′ having an expansion shape in one direction by using the vertical pipes 10 and 10 ′ of the connection slit 11 and 11 ′.

In addition, when expansion to both sides is necessary, the horizontal pipes 40 and 40 ′ are connected in all directions by forming the connecting slits 11 and 11 ′ on all four surfaces of the vertical pipes 10 and 10 ′. Therefore, it is possible to infinitely expand in any direction desired through the application of replacement to the vertical pipes 10 and 10 ′, and the vertical pipe 10 located on the outermost side even if the expansion to the shelf is made Since the connecting slits 11 and 11' are still not exposed on the surface of (10'), it can be sufficiently utilized as interior furniture.

In particular, since the height of the shelf panel before expansion and the height of the shelf panel at the expansion position can be formed equally when connecting the expansion as described above, the entire shelf panel can be assembled to match the height regardless of whether or not it is expanded, so the convenience of use is improved. Of course, it is also very good in terms of various uses.

The configurations shown in the embodiments and drawings as described above are only the most preferred embodiment of the present invention, and do not represent all the technical spirit of the present invention, so various equivalents and modifications that can replace them It should be understood that there may be examples.

10,10': vertical tube 11,11': connecting slit
20: locking port 21, 21': locking support
22: connection support 23,23': horizontal support
24: locking protrusion 25: locking groove
40,40': horizontal pipe 41: incision groove
50: connection fixing device 51: receiving groove
52: elasticity gauge piece 53: locking jaw
54,54': fitting groove 55,55': interference protrusion
56: locking jaw
60,60': Shelf panel

Claims (7)

A rectangular vertical tube 10 and 10 ′ in which at least two sides of a pair of left and right connecting slits 11 and 11 ′ formed repeatedly up and down along the longitudinal direction are formed on at least two sides; A locking hole 20 having a locking support portion 21 and 21 ′ inserted into the connecting slit 11 and 11 ′ on one side thereof; Horizontal pipes 40 and 40 ′ for connecting vertical pipes 10 and 10 ′ spaced apart from each other in the transverse direction; A connection fastener 50 that is inserted and fixed to both ends of the horizontal pipes 40 and 40' to be elastically held with the locking fastener 20; Consisting of a shelf panel 60, 60', which is placed on the horizontal tube 40, 40', the receiving groove portion for inserting the locking fastener 20 into the bottom of the connection fastener 50 ( 51) is formed, and an elastic locking piece 52 having a locking protrusion 53 formed on one lower side of the receiving groove 51 is formed to protrude, so that the locking fastener 20 accommodates the connection fixing member 50 When inserted into the groove 51, one lower end of the locking hole 20 on the locking projection 53 is mutually engaged, so that the vertical tube 10, 10' and the horizontal tube 40, 40' In order to be connected and fixed, the locking fastener 20 is formed by bending the metal plate in a "c" shape to form the intermediate connection support 22 and the horizontal support 23 and 23 ′ on both sides of the connection support 22 And formed by protruding upwardly engaging portions 21 and 21' at each end of the horizontal support portions 23 and 23', and the horizontal support portion 23 at the front of the connection fastener 50 Forming the fitting grooves 54 and 54 ′ to which the (23 ′) is inserted so that one side of the locking fastener 20 is inserted in a vertical direction with respect to the receiving groove 51 of the connection fixing tool 50 In addition, a locking protrusion 24 is formed on one side of the locking support portions 21 and 21 ′ facing the connection support 22, and the locking protrusion 24 is formed below the horizontal support 23 and 23 ′. In the expandable interior shelf having a resilient locking-type assembly structure made by forming a locking groove 25 having one inner surface vertically coincident with the end surface of,
The connection support portion 22 of the locking fastener 20 is formed in an inclined shape, and the elastic locking piece 52 in the receiving groove portion 51 of the connection fixing member 50 is also inclined direction of the connection support portion 22 In the process of combining the connection fixing tool 50 of the horizontal tube body 40, 40' with respect to the locking fastener 20 coupled to the vertical tube body 10, 10', From the inner end of the connection support part 22 of the locking fastener 20, the locking protrusion 53 of the elastic locking piece 52 interferes, so that the connection fixing member 50 is vertically piped by mutual oblique interference. Expandable interior shelf having a resilient locking assembly structure, characterized in that it is moved in the (10') direction and is configured to be inserted downward.
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