JPH0730765U - Bookshelf rear shelf back plate mounting structure - Google Patents

Abstract

(57) [Abstract] [Purpose] The back support plate on the back side of the shelf that stores books,
It can be installed effectively so that it can be expanded and contracted by a simple operation according to the size of a book. [Structure] Both columns (1) standing upright on both sides, a steel bookshelf constructed by installing a shelf plate (2) between the front faces of the columns (1), and a vertical surface (2a) at the rear. Behind the shelf plate (2) which it has, both lateral end faces (3a), (3a) are both columns (1), and a back receiving plate (3) which is capable of contacting the inner surface of (1). ), (1), and a protrusion (3b) having a U-shaped cross section which is higher than the plate surface is formed at one end of the back support plate (3), and the other end is provided with Both engaging plates (which can come into contact with the upper surface of the shelf board (2) and the front surface of the support column (1) by forming an abuttable refracting surface (3c) on the vertical surface (2a) of the shelf board (2). 4), a curved surface (4a) that bends in an L shape is integrally formed on the inner end side of (4), and both engaging plates
The bent curved surfaces (4a) of (4) and (4) are fixed by spot welding to the front upper surfaces of both lateral end portions of the back support plate (3).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is a back shelf support plate for a bookshelf in which a back support plate on the back side of a shelf for accommodating books and the like is attached so that it can be expanded and contracted by a simple operation according to the size of the book or the like. Regarding mounting structure.

[0002]

[Prior art]

 Conventionally, in a bookshelf that is constructed by placing a shelf between the front faces of both columns that stand upright on both sides, the shelf can be slid in the back and forth direction or lifted and rotated to the back of the shelf. It is known to install a back support plate to allow for telescopic adjustment.

[0003]

[Problems to be solved by the device]

 However, if the back support plate is moved back and forth, the structure becomes complicated and the operation is not easy, and the cost is increased. Also, if the back support plate is lifted and rotated, both ends of the back support plate are moved. Since each had to be operated, it was not easy to operate, and it was dangerous because it could be caught by a finger.

[0004]

[Means for Solving the Problems]

 The present invention solves such a problem and is devised so that it can be adjusted by simply rotating it.Therefore, a shelf board is installed between the front faces of both columns standing upright on both sides. In the steel bookshelf, the back receiving plate whose both lateral end surfaces are in contact with the inner side surfaces of both columns is fitted between the two columns behind the shelf plate having a vertical surface at the rear. A protrusion having a U-shaped cross section that is higher than the plate surface is formed on one end side of the back support plate, and a refracting surface that can collide with the upright surface of the shelf plate is formed on the other end side of the back support plate. A bent curved surface that bends into an L-shape is integrally formed on the inner end sides of both engaging plates that can come into contact with the upper surface of the plate and the front surface of the column, and the bent curved surfaces of both engaging plates are formed on both sides of the back receiving plate. It is constructed by welding to the upper front surface of each end.

[0005]

[Action]

 Therefore, when the back receiving plate is erected, both engaging plates are joined to the upper surface of the shelf plate while engaging the front faces of both supporting columns with both lateral end surfaces of the back supporting plate contacting the inner side surfaces of both supporting columns. By approaching the back of the shelf board, it becomes a backrest for books, etc. Also, when pushing the upper part of the back support plate in that state backward, the back support plate is centered on the center part of both engagement plates as it is. It will rotate 90 degrees as a result, both engaging plates will be joined to the front faces of both columns respectively, and the refraction surface of the back support plate will abut against the upright surface of the shelf plate, and it will be used as a back support for books. The protruding area extends rearward to increase the mounting area for books and the like.

[0006]

【Example】

 FIG. 2 is a front view showing a part of the bookshelf, and a front end portion and a rear end portion are provided between both side plates 5 and 5 which are front sides of both square pipe columns 1 and 1 standing on both sides. A shelf support 2 in which the upright surfaces 2b and 2b are bent to form a bridge, and behind the shelf plate 2 both lateral end surfaces 3a and 3a are in contact with the inner side surfaces of the columns 1 and 1. The plate 3 is fitted between the columns 1 and 1, and a protrusion 3b having a U-shaped cross section which is higher than the plate surface is formed at one end of the back receiving plate 3 and the above-mentioned is provided at the other end. An abuttable refracting surface 3c is refracted and formed on the upright surface 2a of the shelf board 2, and an extending surface 3d is further bent and extended from the refracting surface 3c in terms of balance and strength. A folding curved surface 4a that bends in an L-shape is integrally formed on the inner end sides of both engaging plates 4 that can contact the upper surface of the shelf board 2 and the front surface of the column 1. Respectively bent surface 4a of both engaging plate 4,4 in front side upper surface of both transverse portion of the back receiving plate 3 is constructed by fixing by spot welding.

Therefore, as shown in FIG. 1 to FIG. 4, when the back support plate 3 is erected, both lateral end surfaces 3 a of the back support plate 3 are in contact with the inner side surfaces of the support columns 1, 1. The engaging plates 4 and 4 are joined to the upper surface of the shelf plate 2 while engaging with the front surfaces of the support columns 1 and 1, so that the engaging plates 4 and 4 approach the rear part of the shelf plate 2 and serve as a back support for books or the like. Become.

When the upper portion of the back support plate 3 in that state is pushed rearward as indicated by the arrow a, the back support plate 4 remains in the center of the engagement plates 4 and 4 as shown in FIGS. 5 to 7. As a result, the two engaging plates 4 and 4 are joined to the front surfaces of the columns 1 and 1 respectively, and the refracting surface 3c of the back receiving plate 3 is moved to the shelf plate 2 as well. The protrusion 3b, which is a backrest of a book or the like, abuts against the upright surface 2a of the book, and the projection area 3b extends rearward, so that the mounting area of the book or the like can be widened.

[0009]

[Effect of device]

 As described above, according to the present invention, when the back receiving plate (3) is erected, both the support columns (1), the contact with the inner surface of the (1) and the engaging plates (4), (4), the both support columns (1). , The back support plate (3) is brought close to the rear part of the shelf plate (2) by being joined to the upper surface of the shelf plate (2) while engaging with the front surface of the (1), and used as a back rest for books or the like. When the upper part of the upright back support plate (3) is pushed backward, the back support plate (3) is centered on the center of both engaging plates (4), (4). By rotating 90 degrees, both engaging plates (4) and (4) are joined to the front surfaces of both columns (1) and (1), respectively, and the refracting surface (3c) of the back receiving plate (3) is joined. Collides with the upright surface (2a) of the shelf plate (2), and the protruding portion (3b) that serves as a backrest of a book or the like extends rearward, so that the loading area of the book or the like can be widened. It will be possible to do it safely by simply rotating the back support plate (3). This makes it possible to easily perform the adjustment operation with one touch, making it a steel-made simple structure with sufficient strength, and also easy to manufacture, and it is possible to achieve cost reduction. It has features that can be implemented in

[Brief description of drawings]

FIG. 1 is a perspective view showing a part of an embodiment of the present invention.

FIG. 2 is a front view showing a part of a bookshelf.

FIG. 3 is a side sectional view showing a section taken along the line III-III in FIG.

FIG. 4 is a perspective view showing a part of FIG.

5 is a front view showing the operating state of FIG. 2. FIG.

FIG. 6 is a side sectional view showing an operating state of FIG.

FIG. 7 is a perspective view showing an operating state of FIG.

[Explanation of symbols]

 1 Support 2 Shelf 2a Upright Surface 3 Back Support Plate 3a Side Edge 3b Projection 3c Refraction Surface 4 Engagement Plate 4a Bent Curved Surface

Claims (1)

[Scope of utility model registration request] 1. A bookshelf made of steel constructed by erection of a shelf plate (2) between the front faces of both columns (1) and (1) standing upright on both sides. )), The rear support plate (3) having both lateral end faces (3a) and (3a) capable of contacting both columns (1) and the inner surface of (1) is provided at the rear of the shelf plate (2). It is fitted between (1) and (1), and a protrusion (3b) having a U-shaped cross section which is higher than the plate surface is formed on one end side of the back support plate (3), and the other end side is formed. Forms an abuttable refracting surface (3c) on the upright surface (2a) of the shelf board (2), and both engaging plates (which can contact the upper surface of the shelf board (2) and the front surface of the support column (1) ( 4), a curved surface (4a) that bends in an L shape is integrally formed on the inner end side of (4), and both engaging plates
A shelf plate rear back support plate, characterized in that the folded curved surfaces (4a) of (4) and (4) are fixed by spot welding to the front upper surfaces of both lateral end portions of the back support plate (3). Mounting structure.