KR102316201B1 - A bookshlef with ease to depth adjustment - Google Patents

Abstract

The present invention relates to a bookshelf with adjustable storage depth, and its purpose is to allow the storage depth of the shelf to be adjusted in multiple stages by rotating the book stuffer, so that books and articles of various sizes can be arranged and arranged uniformly, It is to provide not only a shelf, but also a shelf whose storage depth is adjusted with improved usability to enable storage of display and storage items.
According to the present invention, a coupling groove is formed in the longitudinal direction at the rear end of a shelf on which books are placed, and one side of the book stopper is fitted into the coupling groove, and the book stopper includes a support part to be fitted into the coupling groove, and a step difference from the support part. and a stopper plate integrally connected by a connecting plate so as to be provided, wherein the support portion includes a first support plate, a second support plate connected to the first support plate, and a connecting plate and a second support plate parallel to the first support plate and the stopper plate and a third support plate connected to the support plate, wherein the connecting plate and the stopper plate are formed to have different lengths. The position of the stopper plate is changed according to the contacting first support plate, the second support plate, or the third support plate, so that the storage depth D of the shelf is adjusted in multiple steps.

Description

A bookshelf with ease to depth adjustment

The present invention relates to a bookshelf of which the storage depth is controlled, and the storage depth of the shelf can be variously adjusted according to the shape of the book stopper coupled into the coupling groove formed on the shelf, so that the user's convenience and organizing efficiency can be increased. It is about the bookshelf that is controlled.

In general, a bookshelf is made to put or put documents or books, and a single bookshelf is formed to store, display, and store books in one direction, and storage, display and storage of books are made in both directions. It is divided into a bibliography that is formed in such a way.

In addition, the shelf is made of a material such as wood, iron, synthetic resin, or a mixture of these materials, and is configured in multiple stages according to the number of shelves to be installed.

However, the conventionally used bookshelves are only provided with storage, display, and storage of books, so that the storage depth of the books is fixed. there was.

That is, in order to prevent books from being pushed back in the conventional shelf, a locking jaw with a stopper function of a suitable height is integrally manufactured on the back of the iron shelf shelf, which means that the books on display are small, In the case of medium size, if these books are pushed up to the sill installed at the back and displayed, the books are displayed too deep inside the shelf, making it difficult to store/display the books on the shelf, as well as the books displayed from the shelf. There was a problem that it was not easy to take out.

In addition, when relatively large size books such as children's gram books or art books are displayed on the conventional shelf, the back of the book is caught on the sill of the shelf shelf, the book protrudes in front of the shelf, and the book is damaged. This not only occurred, but there was a problem that the arrangement of the book was not made.

In addition, when it is used as a box containing books rather than a shelf display or a showcase for displaying relatively large items that are not for shelf use, there are various problems such as unusable due to a stumbling block behind the shelf.

Registered Patent Publication No. 10-1988838 (2019.06.06) Laid-Open Patent Publication No. 10-2014-0002951 (2014.01.09) Registered Patent Publication No. 10-1450578 (2014.10.07) Registered Patent Publication Registration No. 10-1825912 (2018.01.31)

It is an object of the present invention to adjust the storage depth of the shelf in multiple stages by rotating the book stuffer, so that books and articles of various sizes can be arranged and arranged uniformly, and storage of not only bookshelves, but also display and storage articles. To make this possible, it is to provide a shelf with an adjustable storage depth with improved usability.

According to the present invention, a coupling groove is formed in the longitudinal direction at the rear end of a shelf on which books are placed, and one side of the book stopper is fitted into the coupling groove, and the book stopper includes a support part to be fitted into the coupling groove, and a step difference from the support part. and a stopper plate integrally connected by a connecting plate so as to be provided, wherein the support portion includes a first support plate, a second support plate connected to the first support plate, and a connecting plate and a second support plate parallel to the first support plate and the stopper plate and a third support plate connected to the support plate, wherein the connecting plate and the stopper plate are formed to have different lengths. The position of the stopper plate is changed according to the contacting first support plate, the second support plate, or the third support plate, so that the storage depth D of the shelf is adjusted in multiple steps.

According to the insertion direction of the book stopper to be fitted into the coupling groove of the shelf, the storage depth of the shelf can be adjusted in multiple steps according to the size of the book. and large books, etc. are stably arranged without a sliding phenomenon, and the books are arranged side by side without being pushed back, thereby improving aesthetics and visibility.

According to the present invention, the storage depth of the bookshelf can be variously and conveniently adjusted by the attachment and detachment of the book stopper and the change of the mounting direction, so that not only books of various sizes, but also articles such as boxes and various display items can be easily stored. there is

That is, small/medium/large books are placed on shelves with bookstoppers fitted, and extra-large books, articles, and display items, etc., can be stored and displayed on shelves where bookstoppers are not fitted without protruding outside the shelves. have.

In addition, in the present invention, when the connecting plate of the book stopper and the length of the stopper plate are manufactured to be various, there is an effect that the storage arrangement for books of various sizes can be made.

According to the present invention, since the support part of the book stopper is elastically coupled into the coupling groove of the shelf, the attachment and detachment of the book stopper is made easily, and the gap phenomenon of the book stopper according to the assembly tolerance does not occur during fitting and coupling, The support of the book stopper with respect to the shelf is improved, and even if an external force such as vibration is generated, the placed books are supported, so that the books can be stored and arranged smoothly.

The present invention can be applied to either a one-way storage type shelf or a two-way storage type shelf, so that convenience and merchantability according to use are greatly improved.

In particular, when the present invention is applied to a bidirectional storage type shelf, the storage depth can be variously adjusted depending on the installation direction of the book stopper with respect to the shelf coupling groove, and the storage depth can be variously adjusted depending on whether the book stopper is installed or not. There are many effects such as arrangement and arrangement of books or displays of various sizes by one shelf.

1 is an exemplary view showing the configuration of a shelf according to the present invention;
Figure 2 is another exemplary view showing the configuration of the shelf according to the present invention
3 is an exemplary view showing an installation state of the shelf of the shelf according to the present invention;
4 is an exemplary view showing an exploded configuration of the shelf according to the present invention;
5 is an exemplary view showing the configuration of a shelf according to the present invention;
6 is an exemplary view showing the configuration of a book stopper according to the present invention;
7 is an exemplary view showing a one-step storage depth adjustment state according to the present invention;
8 is an exemplary view showing a two-step storage depth adjustment state according to the present invention;
9 is an exemplary view showing a three-step storage depth adjustment state according to the present invention;
10 is an exemplary view showing a four-step storage depth adjustment state according to the present invention;

Figure 1 is an exemplary view showing the configuration of the shelf according to the present invention, Figure 2 is another exemplary view showing the configuration of the shelf according to the present invention, Figure 3 is an example showing the installation state of the shelf of the shelf according to the present invention 4 is an exemplary view showing an exploded configuration of a shelf according to the present invention, FIG. 5 is an exemplary view showing the configuration of a shelf according to the present invention, and FIG. 6 is an example showing the configuration of a book stopper according to the present invention 7 is an exemplary view showing a first-stage storage depth adjustment state according to the present invention, FIG. 8 is an exemplary view showing a two-stage storage depth adjustment state according to the present invention, and FIG. 9 is a three-step storage depth adjustment state according to the present invention An exemplary view showing a storage depth adjustment state, FIG. 10 is an exemplary view showing a four-step storage depth adjustment state according to the present invention,

1 to 4 and 7 to 9, according to the present invention, the storage depth of the shelf is adjusted in multiple steps according to the rotation position of the book stopper that is fitted into the coupling groove of the shelf. Books are arranged and stored stably.

That is, in the present invention, a coupling groove 110 is formed in the longitudinal direction at the rear end of the shelf 100 on which books are placed, and one side of the book stopper 200 is fitted into the coupling groove 110,

The book stopper 200 includes a support part 210 fitted into the coupling groove 110 and a stopper plate 230 integrally connected with the support part 210 by a connection plate 220 to have a step difference. do,

The support part 210 includes a first support plate 211, a second support plate 212 connected to the first support plate 211, and a connection plate so as to be parallel to the first support plate 211 and the stopper plate 230 ( 220) and a third support plate 213 connected to the second support plate 212,

The connecting plate 220 and the stopper plate 230 are formed to have different lengths, and when the support part 210 of the book stopper is fitted into the coupling groove 110 of the shelf, the rear end surface of the coupling groove ( 113), the position of the stopper plate 230 is changed according to the first support plate 211, the second support plate 212, or the third support plate 213 which is selectively brought into contact with the shelf to increase the storage depth D of the shelf. It is configured to be adjusted in multiple stages.

The lengths of the connecting plate 220 and the stopper plate 230 are not limited to specific values, but may be manufactured in various lengths according to the type of books stored and arranged on the shelf.

In the present invention, the front end and the rear end are described by setting the front end of the bookshelf as the front end and the rear end of the bookshelf as the rear end, based on the direction in which the book is inserted. In addition, in the present invention, a general book means a book of a normal size (eg, a magazine size) that is commonly used, and a minor book and a medium book mean a book such as a poetry collection or a novel book of a size smaller than a general book, Books refer to books such as children's picture colors and art books that are larger than general books.

As shown in FIGS. 3 to 5 , the shelf 100 has no locking jaws at the rear, that is, has a flat top surface, and a coupling groove 110 is formed at the rear end in the longitudinal direction.

The coupling groove 110 is formed in an upper open shape, and includes a front support surface 111 on which the support part 210 is contacted and supported, a bottom support surface 112 and a rear support surface 113 in the longitudinal direction of the shelf. As a result, it may be formed having the same length as the shelf 100, or one or more may be formed to be spaced apart by a predetermined distance in the longitudinal direction of the shelf.

The front end surface 111 is formed to be perpendicular to the upper surface 101 of the shelf, and the rear end surface 113 is formed to be parallel to the front end surface 111 by a predetermined distance from the front end surface 111, and The rear end surface 113 is integrally connected by the floor support surface 112 .

That is, as shown in FIG. 5 , the coupling groove 110 is formed as a concave groove with an open top by the front end surface 111 , the bottom support surface 112 , and the rear end surface 113 , as shown in FIG. 5 . The upper surface 101 of the shelf is separated into a front end upper surface 102 and a rear end upper surface 103 by the coupling groove 110 formed in this way.

At this time, the rear end upper surface 103 is formed to have a step (a) with the front end upper surface 102 as much as the thickness d of the connecting plate of the book stopper. That is, the front upper surface 102 and the rear upper surface 103 are provided with a step (a) equal to the thickness (d) of the connecting plate of the book stopper, so that the connecting plate 220 of the book stopper is on the rear upper surface (103). When the support part 210 of the book stopper is fitted into the coupling groove 110 so as to be laminated/contacted, the front end upper surface 102 and the connecting plate one surface are positioned on the same plane (equivalent in height), that is, the upper surface 101 is By forming a single plane, the storage arrangement of books is made easy.

The shelf 100 configured as described above is formed such that the coupling groove 110 is provided in the longitudinal direction by bending the iron plate, or the coupling groove 110 is provided in the longitudinal direction by molding of a synthetic resin material or a plate (wood). can be formed. The drawing of the present invention shows an iron lathe made by bending an iron plate.

In addition, the shelf 100 may be formed to have a predetermined thickness by bending an iron plate or using wood or synthetic resin material.

For example, as shown in FIG. 5 , in the shelf 100 , the front plate 120 , the top plate 130 , and the side plate 140 are formed by bending the iron plate, and by bending the extended top plate 130 . The intermediate plate 150, the bottom plate 160, and the rear plate 170 are formed, and the coupling groove 110 having the front end surface 111, the floor support surface 112, and the rear end surface 113 is predetermined. It may be formed to have a depth.

At this time, as for the shelf 100 , one surface of the intermediate plate 150 corresponds to the front end surface 111 , one surface of the bottom plate 160 corresponds to the floor support surface 112 , and one surface of the rear plate 170 . The thickness of the rear plate 170 corresponds to the rear end surface 113 and the rear end upper surface 103 .

In addition, the shelf 100 may be formed to further include an elastic plate 180 that elastically supports the support part 210 of the book stopper in the coupling groove 110 . That is, the front plate 120, the upper plate 130, and the side plate 140 are formed by bending the iron plate, and the middle plate 150, the bottom plate 160, and the rear plate ( 170) is formed, and an elastic plate 180 is formed between the rear end upper plate 190 parallel to the bottom plate 160 and the middle plate 150 and the rear plate 170 by bending of the rear plate 170, , a coupling groove 110 having a front end surface 111 and a bottom support surface 112 and a rear end surface 113 may be formed to have a predetermined depth.

At this time, one surface of the intermediate plate 150 corresponds to the front end surface 111, one surface of the bottom plate 160 corresponds to the floor support surface 112, and one surface of the elastic plate 180 corresponds to the rear end surface ( 113), and one surface of the rear end upper plate 190 corresponds to the rear end upper surface 103, respectively.

In addition, the elastic plate 180 is formed to be spaced a predetermined distance from the bottom plate 160 so that the end has a free end, so that the elastic plate 180, the rear end upper plate 190, and the rear plate are formed on one side of the coupling groove 110 . (170) and the free space (110a) made of the bottom plate (160) is formed to communicate with the coupling groove (110).

The free space 110a has a function of giving a space so that the elastic plate 180 has an elastic force, and when the support part 210 of the book stopper is inserted into the coupling groove and is supported in contact with the elastic plate 180, the support part ( One side of the 210 is inserted into the free space 110a to have a function to prevent the separation of the support part 210 .

As shown in FIGS. 6 to 9 , the book stopper 200 includes a support part 210 fitted and fixed into the coupling groove 110 , and a connection plate 220 to have a step difference with the support part 210 . It includes a stopper plate 230 that is integrally connected and supported in contact with one side of the book.

In the support part 210 , the first support plate 211 , the second support plate 212 , and the third support plate 213 have the same length and are integrally connected.

In addition, the support part 210 is formed such that the first, second, and third support plates 211, 212, 213 are selectively supported by surface contact in the coupling groove 110, or a plurality of concave-convex projections ( 211a, 212a, 213a) may be formed so as to be in point contact or line contact with the front end surface 111 and the bottom support surface 112 and the rear end surface 113 of the coupling groove.

At this time, the length (A) of the first, second, and third support plates is formed to correspond to the distance (B) from the front end surface of the coupling groove to the rear end surface, and the concave-convex projections 211a on the first, second, and third support plates. , 212a and 213a) are formed so that the distance from the concave-convex protrusion to the concavo-convex protrusion on one side corresponds to the length A of the first, second, and third support plates.

The support part 210 is preferably formed by bending the first, second, and third support plates 211 , 212 , and 213 to have a 'C'-shaped cross-sectional structure so as to have a predetermined elastic force. That is, the first support plate is preferably formed so that the end (211b) has a free end.

In addition, the support part 210 may further include an auxiliary support plate 214 on the first support plate 211 so as to be parallel to the second support plate 212 , and the auxiliary support plate 214 is the first support plate 211 . It is formed with a predetermined separation distance from the third support plate 213 so as to have a free end.

The auxiliary support plate 214 not only has a function of reinforcing the rigidity of the support part 210, but is also loaded into the coupling groove 110 so that the second support plate 212 is in contact with the rear end surface 113 of the coupling groove. When the support part 210 of the stopper is fitted, it is supported in contact with the front end surface 111 of the coupling groove and has a function of preventing the flow of the book stopper 200 .

As described above, the support portion 210 formed by the bending of the first, second, and third support plates 211, 212, and 213 is elastically inserted into the coupling groove 110 of the shelf to be firmly coupled without a gap phenomenon.

One side of the connecting plate 220 is connected to the third support plate 213 so as to be parallel to the second support plate 212 in an outer direction (a direction away from the first support plate) of the support part 210 and the other end is a stopper plate 230 . It is integrally connected to the , and has a function of connecting the support part 210 and the stopper plate 230 and a function of reinforcing the rigidity of the stopper plate 230 .

In addition, the connecting plate 220 may be supported in contact with the book 10 according to the insertion direction of the book stopper support 210 with respect to the coupling groove 110 to have a function of adjusting the storage depth.

The stopper plate 230 is supported in contact with the book 10 so that the storage depth is adjusted, and is a connecting plate so as to move away from the second support plate 212 of the support part and parallel to the third support plate 213 of the support part. It is connected orthogonally to 220 .

In this case, the stopper plate 230 is formed to have a length different from that of the connecting plate 220 , and preferably, the length L2 of the stopper plate is greater than the length L1 of the connecting plate.

In the book stopper 200 configured as described above, the support portion 210 comprising the first, second, and third support plates 211, 212, and 213, the connecting plate 220, and the stopper plate 230 are integrally bent by a single iron plate. Preferably, the ends, that is, the end 211b of the first support plate and the end 230a of the stopper plate are rounded to prevent damage to users and books. In addition, when the auxiliary support plate 214 is connected to the first support plate, the end 214a of the auxiliary support plate and the end 230a of the stopper plate are rounded.

In addition, the book stopper 200 may be fitted into the coupling groove of the shelf by various materials, such as wood or synthetic resin, so that the book can be supported in contact.

In the present invention configured as described above, as shown in FIGS. 1, 2, and 7 to 9, the storage depth of the shelf is adjusted in multiple steps according to the insertion direction of the support part of the book stopper that is fitted into the shelf coupling groove. The shelf 800 of the present invention configured in this way has a single shelf 810 in which a plurality of shelves 100 are stacked by a support 300 and books are accommodated in one direction, or a plurality of shelves are symmetrical. It may be provided with a wardrobe stack 820 that is stacked on the support 300 and accommodates books in both directions.

1st step storage depth adjustment (sorry book storage arrangement)

The second support plate 2112 of the book stopper support part is supported in contact with the rear end surface 113 of the engaging groove, one side of the connecting plate of the book stopper is supported in contact with the front end surface of the engaging groove, and the stopper plate 230 is mounted on the shelf. As shown in FIGS. 1, 2 and 7 so as to be parallel to and positioned on the front top surface 102 of the shelf, when the support part of the book stopper is fitted into the coupling groove of the shelf, Since the distance from 120) to the end of the stopper plate 230a corresponds to the storage depth D, the storage arrangement of the small book 11 is possible.

At this time, the small book 11 disposed on the shelf is supported in contact with the end 230a of the stopper plate, so that the sliding phenomenon of the arranged small book book, that is, the small book book pushing back (inside the shelf), is prevented.

Two-step storage depth adjustment (Medium book storage arrangement)

1 and 2 so that the first support plate 211 of the book stopper support is supported in contact with the rear end surface 113 of the engaging groove, and the third support plate 213 is contacted and supported on the front end surface 111 of the engaging groove. And as shown in FIG. 8, when the support part of the book stopper is fitted into the coupling groove of the shelf, the stopper plate 230 of the book stopper is positioned so as to be perpendicular to the front end upper surface 102, and the front plate of the shelf ( Since the distance from 120) to the stopper plate 230 corresponds to the storage depth D, the storage depth becomes deeper than the storage depth of the first stage, so that the storage arrangement of the middle book 12 is possible.

At this time, the middle book 12 disposed on the shelf is supported in contact with one surface of the stopper plate 230 to prevent the middle book from being pushed, that is, from the middle book from being pushed back (inside the shelf).

3 step storage depth adjustment (general book storage arrangement)

1 and 2 so that the first support plate 211 of the book stopper support is supported in contact with the front end surface 111 of the engaging groove, and the third support plate 213 is contacted and supported on the rear end surface 113 of the engaging groove. And as shown in FIG. 9 , when the supporting part 210 of the book stopper is fitted into the coupling groove 110 of the shelf, the connecting plate 220 of the book stopper is stacked on the rear end upper surface, and the stopper plate 230 . is positioned so as to be vertical (standing) on the outside of the rear end of the shelf, and the distance from the front plate 120 of the shelf to the standing stopper plate 230 corresponds to the storage depth (D). Not only the depth becomes deeper, but also becomes longer than the depth of the shelf, so that the storage arrangement of the general book 13 is possible.

At this time, the general book 13 disposed on the shelf is supported in contact with one surface of the upright stopper plate, so that the sliding phenomenon, that is, the general book being pushed back (inside the shelf), is prevented.

4 step storage depth adjustment (arrangement of medium books or general books)

Figure 1 and so that the second support plate 212 of the book stopper support portion is in contact with the front end surface 111 of the coupling groove, and one side of the connecting plate 220 of the book stopper is in contact with the rear end surface 113 of the coupling groove. As shown in FIG. 10 , when the support part of the book stopper is fitted into the coupling groove of the shelf, the connecting plate 220 of the book stopper is positioned so as to be perpendicular to the upper surface of the rear end, and is erected on the front plate 120 of the shelf. Since the distance to the connecting plate 220 of the book stopper corresponds to the storage depth (D), the storage depth is deeper than the 2nd stage storage depth, and the 3rd stage storage depth is provided with a shallow storage depth. The storage arrangement of the book 13 becomes possible.

At this time, the middle book 12 or the general book 13 disposed on the shelf is supported in contact with one surface of the connecting plate 220, and the middle/large book is pushed back, that is, the middle/large book is pushed back (inside the shelf). ) to prevent sliding.

In addition, according to the present invention, the storage depth is adjusted by the book stopper 200 without a rear jaw at the rear end of the shelf, so that, as shown in FIGS. 1 and 2 , the book stopper 200 is not installed on the shelf. In this case, a storage arrangement can be made for large articles 14 such as extra-large books, boxes, and the like, and large display products.

Further, in the present invention, in the case of a costume book 820, as shown in FIG. 2, the book stopper 200 is fitted to one shelf 100a, and the book stopper 200 is fitted to the other shelf 100b. By not being coupled, simultaneous placement and alignment of books of various sizes can be achieved.

In particular, if the book stopper 200 is not fitted into the coupling groove 110 of the shelf, in the case of the double shelf 820, as shown in FIG. 2, from one shelf 100a to the other shelf 100b. A storage arrangement may be made for items such as extra-large books or boxes, or large items 14 such as display items.

The present invention is not limited to the specific preferred embodiments described above, and without departing from the gist of the present invention as claimed in the claims, anyone with ordinary skill in the art to which the invention pertains can make various modifications. Of course, such modifications are intended to be within the scope of the claims.

(10): books (11): minor books
(12) : Middle book (13) : General book
(14): Large items (100): Shelves
(101): upper surface (102): shear upper surface
(103): rear end upper surface (110): coupling groove
(111): front end ground (112): floor support surface
(113): rear ground (110a): free space
(120): front plate (130): top plate
(140): side plate (150): middle plate
(160): bottom plate (170): thick plate
(180): elastic plate (190): rear end top plate
(200): Bookstopper (210): Support
(211): first support plate (211a): end
(212): second support plate (213): third support plate
(214): auxiliary support plate (214a): end
(220): connecting plate (230): stopper plate
(230a): end (300): support
(400): side plate (800): shelf
(810): singles (820): doubles

Claims (8)

A coupling groove 110 is formed in the longitudinal direction at the rear end of the shelf 100 on which books are placed, and one side of the book stopper 200 is fitted into the coupling groove 110,
The book stopper 200 includes a support part 210 fitted into the coupling groove 110 and a stopper plate 230 integrally connected with the support part 210 by a connection plate 220 to have a step difference. do,
The support part 210 includes a first support plate 211, a second support plate 212 connected to the first support plate 211, and a connection plate so as to be parallel to the first support plate 211 and the stopper plate 230 ( 220) and a third support plate 213 connected to the second support plate 212,
The connecting plate 220 and the stopper plate 230 are formed to have different lengths, and when the support part 210 of the book stopper is fitted into the coupling groove 110 of the shelf, the rear end surface of the coupling groove ( 113), the position of the stopper plate 230 is changed according to the first support plate 211, the second support plate 212, or the third support plate 213 which is selectively brought into contact with the shelf to increase the storage depth D of the shelf. A shelf with adjustable storage depth, characterized in that it is adjusted in multiple stages.
The method of claim 1 ;
The shelf 100 has a flat top surface so that there is no locking step at the rear end, and the upper surface 101 of the shelf is separated into a front end upper surface 102 and a rear end upper surface 103 by a coupling groove 110 formed at the rear end. But,
The coupling groove 110 is made of a concave groove shape with an open top by the front end surface 111, the bottom support surface 112, and the rear end surface 113,
The front end upper surface 102 and the rear end upper surface 103 are bookshelves with adjustable storage depth, characterized in that they are formed to have a step (a) as much as the thickness (d) of the connecting plate of the book stopper.
The method according to claim 1 or 2;
The shelf (100) is a bookshelf with adjustable storage depth, characterized in that the elastic plate (180) for elastically supporting the support part (210) of the book stopper is further provided in the coupling groove (110).
4. The method of claim 3;
In the shelf 100, the front plate 120, the upper plate 130, and the side plate 140 are formed by bending the iron plate, and the middle plate 150 and the bottom plate 160 are bent by the extended upper plate 130. And a rear plate 170 is formed, and the rear end upper plate 190 parallel to the bottom plate 160 by bending of the rear plate 170, and an elastic plate 180 between the middle plate 150 and the rear plate 170 is formed,
A coupling groove 110 having a front end surface 111 , a floor support surface 112 , and a rear end surface 113 is formed by the intermediate plate 150 , the bottom plate 160 , and the elastic plate 180 , , that the free space 110a consisting of the elastic plate 180, the rear end upper plate 190, the rear plate 170 and the bottom plate 160 on one side of the coupling groove 110 is formed to communicate with the coupling groove 110 A bookshelf with adjustable storage depth.
The method of claim 1 ;
The support unit 210 is a bookshelf with adjustable storage depth, characterized in that the first, second, and third support plates 211, 212, 213 are bent in a 'C'-shaped cross-sectional structure to have a predetermined elastic force.
6. The method of claim 1 or 5;
The support part 210 is configured such that a plurality of concave-convex projections 211a, 212a, 213a are formed on the first, second, and third support plates 211, 212, and 213 to be in point contact or line contact in the coupling groove. becoming a book.
6. The method of claim 1 or 5;
The support unit 210, the storage depth adjustable shelf, characterized in that the auxiliary support plate 214 is further provided so as to be parallel to the second support plate 212 on the first support plate 211.
6. The method of claim 1 or 2 or 5;
The shelf 800 is a single shelf 810 in which a plurality of shelves 100 are stacked by a support 300 and books are accommodated in one direction, or a plurality of shelves have a symmetrical structure and are stacked on the support 300 . A storage depth adjustable shelf, characterized in that it is formed and consists of a double shelf 820 in which books are stored in both directions.

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