JPH0686592U - Shelf board - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a shelf board which can be formed into an arbitrary length by extrusion molding, can secure a predetermined strength, and can be easily attached to a shelf board installation place. [Structure] The shelf board (10) includes a shelf board body (12) and a reinforcing member (14). The shelf plate body (12) consists of an upper plate (11), a lower plate (13), side plates (17),
The connecting plate (18), the engaging portion (20), the groove (16)
Between the (16), a storage auxiliary member fixing space (42) for fixing the storage auxiliary member (40), a storage auxiliary member locking portion (44), a reinforcing portion (50), for the storage auxiliary member The groove (46) was formed integrally by extrusion molding. The reinforcing member (14) has a U-shaped cross section and is formed to have a length substantially the same as the longitudinal length of the shelf main body (12), and the groove (16) of the shelf main body (12).
Inserted and fixed in. A shelf support member (30) is projected at the shelf installation location, and the opening of the reinforcement member (14) is hooked on this to support the shelf (1
0) was formed so that it could be fixed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a shelf board used for storage furniture, a shoe box, and the like. More specifically, it can be formed into an arbitrary length by extrusion molding and can be attached to storage furniture while ensuring a predetermined strength. The present invention also relates to a shelf board in which storage auxiliary members for storing small items such as boots, dry materials or insect repellent can be fixed inside storage furniture. .

[0002]

[Prior art]

 Conventionally, a large number of shelves used for storage furniture, shoe boxes, etc. have been made of synthetic resin because of the large number of shelves used. As an example of such a conventional shelf board made of synthetic resin, the "shelf board made of synthetic resin such as a flower stand" shown in Japanese Utility Model Laid-Open No. 63-152443 is known. The shelf board will be described below with reference to FIGS. 3 and 4. Here, FIG. 3 is an enlarged cross-sectional view showing a shelf board according to Japanese Utility Model Laid-Open No. 63-152443. FIG. 4 is a back view showing a shelf board according to Japanese Utility Model Publication No. 63-152443.

Reference numeral 121 is a thin-walled synthetic resin frame body having a required width and length, 122 is a U-shaped annular groove having a downward cross-section formed along the lower surface of the frame body 121, and 123 is the same frame. A shelf plate member integrally formed in the body 121 in a substantially lattice shape, a pair of locking holes 124 formed at lower surfaces of both ends of the shelf plate member 123, and 126 extending along both longitudinal directions of the annular groove 122. The metal plate 127 having a U-shaped cross-section, which was inserted and attached, was a locking member for locking the metal plate 126, which was temporarily provided integrally with the lower end edge of the annular groove 122 at a predetermined interval.

The shelf plate thus formed was used by mounting it by engaging the locking holes 124 of the shelf plate member 123 with the locking projections formed on the arms 116 of the side frames 115. . The locking member 127 for locking the metal plate 126 was integrally installed on the lower end edge of the annular groove 122.

[0005]

[Problems to be solved by the device]

 However, the shelf board as described above has the following problems. That is, the synthetic resin frame 121 that constitutes the shelf could not be extruded due to its structure. Therefore, it has not been possible to form the shelf plate by changing the length of the shelf plate in the same direction with the same width. In other words, in such a conventional shelf board, in order to standardize the building members based on today's request for cost reduction of building members, it is necessary to produce many kinds of members with the same mold material. I could not be satisfied.

Further, in order to fix the shelf plate at a predetermined position, the locking hole 124 formed on the shelf plate must be engaged with a locking projection formed on the arm 116 of the side frame 115 in advance. Needless to say, it was unsuitable for use as a shoe box or storage furniture that was used by supporting both ends of the shelf. That is, since the shelf board is not structured so that it can be supported at both end portions, there are naturally limits to the places where it can be used, and it has not been versatile.

In addition, when the conventional shelf board formed as described above is used as it is for storage furniture, a shoe box, etc., for various reasons, one shelf board can be used as a pair of boots and boots, for example. In some cases, objects to be stored having different heights must be mixed and stored. In such a case, the storage space above the object having a low height is not used and the space is wasted.

Further, when a small object to be stored such as a desiccant or insect repellent is placed on the shelf board in the storage space and used, the space for storing the original object to be stored must be eroded. As in the above case, the space above the placed desiccant and the like was wasted. Therefore, the purpose of the present invention is to solve the above-mentioned problems, and it is possible to form it to an arbitrary length by extrusion molding, to ensure a predetermined strength, and to mount it on a shelf installation site. It is to provide a shelf board that is easy and can effectively use the storage space.

[0009]

[Means for Solving the Problems]

 In order to solve the above problems, a shelf board according to the invention of claim 1 is a shelf board (10) installed in storage furniture or the like, and the shelf board (10) is a shelf board body (12). The shelf body (12) is provided with a reinforcing member (14) positioned inside the shelf body (12) to reinforce the shelf body (12), and the shelf body (12) has upper plates (11) and The lower plate (13), the side plate (17) connecting the upper plate (11) and the lower plate (13) at both ends thereof, the upper plate (11) and the lower plate (13), and both side plates. (17) is provided with a plurality of connecting plates (18) arranged so as to have a gap between them, and one connecting plate (18) in both cross-sectional side directions and another connecting plate (18) adjacent to the connecting plate (18) are provided. Between the connecting plate (18) or the side plate (17) and on the side of the connecting plate (18) or the side plate (17), there is slightly left a locking portion (20) for preventing the reinforcing member (14) from falling off. However, it has a groove (16) with an opening at the bottom, and a connection located between the grooves (16). Between the (18) and the other connecting plate (18) adjacent to the connecting plate (18), there is a storage auxiliary member (for storing small items such as boots, desiccant or insect repellent). A storage auxiliary member fixing space (42) that is a space for fixing the storage auxiliary member (40) is formed, and the storage auxiliary member locking portion (44) for fixing the storage auxiliary member (40) is provided. The storage auxiliary member groove (46) having an opening at the lower side is provided while slightly projecting from at least one of the connecting plates (18) facing the fixing space (42) to the storage auxiliary member fixing space (42) side. Is formed integrally by extrusion molding so that the reinforcing member (14) can be inserted into the groove (16) from the edge of the shelf main body (12) and the longitudinal direction of the shelf main body (12). It is characterized in that it is formed to have almost the same length as the length.

Further, the shelf board according to the invention of claim 2 includes all of the constituent elements of the shelf board (10) according to the invention of claim 1, and both of the shelf boards (10) at the shelf board installation place. Shelf board (10) supported by a shelf board support member (30) projecting in the forehead direction from the portion facing the forehead surface, and the reinforcement member (14) has an opening at the bottom. As shown in the figure, the cross section of the fore edge is formed in a U shape, and the opening faces downward, and is inserted and fixed from the fore edge of the shelf plate body (12) into the groove (16) of the shelf plate body (12). Reinforcing part (50) for reinforcing the storage assisting member locking part (44) by hooking the opening of the reinforcing member (14) to the support member (30) so that it can be fixed to the shelf installation location. Is a part of the storage auxiliary member locking portion (44) facing the storage auxiliary member fixing space (42) other than the tip, and a connecting plate facing the storage auxiliary member fixing space (42). (1 8) or the upper plate (11) is integrally formed and formed.

[0011]

[Action]

 According to the shelf board (10) of the first aspect of the present invention, the following operation is achieved. The shelf main body (12) is formed by extrusion molding, and the upper plate (11), the lower plate (13), the side plate (17), the connecting plate (18), the locking portion (20) and the locking for the storage auxiliary member. The part (44) is integrally formed. That is, the length of the shelf main body (12) in the longitudinal direction can be arbitrarily formed. Further, since a plurality of connecting plates (18) are provided between the upper plate (11) and the lower plate (13), the bending strength of the shelf main body (12) in the longitudinal direction becomes strong.

To assemble the shelf board (10), the reinforcing member (14) may be inserted into the groove (16) of the shelf board body (12) from the front side of the shelf board body (12). Since the reinforcing member (14) is thus inserted into the groove (16) of the shelf main body (12), the bending strength of the shelf main body (12) in the longitudinal direction can be sufficiently ensured. In this case, since the shelf body (12) is provided with the engaging portion (20), the reinforcing member (14) is engaged with the engaging portion (20), and the reinforcing member (14) is attached to the shelf board. It does not fall off the body (12).

Further, since the storage assisting member fixing space (42) is provided and the storage assisting member groove (46) is provided while the storage assisting member locking portion (44) is provided, the storage assisting member (40 ) Is locked to the storage assisting member locking part (44) and does not fall off the shelf main body (12). According to the shelf board (10) of the second aspect of the present invention, in addition to the effects of the shelf board (10) of the first aspect of the invention, the following effects are also achieved.

That is, the reinforcing member (14) has a U-shaped cross-section so that the lower part has an opening, and the opening is directed downward so that the reinforcing member (14) is inserted and fixed in the groove (16) of the shelf body (12). Therefore, the shelf board (10) can be easily installed at the shelf board installation place by hooking the opening of the reinforcing member (14) on the shelf board support member (30). Further, since the storage assisting member locking part (44) is reinforced by the reinforcing part (50), the storage assisting member (40) is locked and fixed to the storage assisting member locking part (44), and the storage Even if a small object is placed on the auxiliary member (40), there is no problem in the strength of the storage auxiliary member locking portion (44).

[0015]

【Example】

 The embodiment described below corresponds to an embodiment of the invention according to claim 2. The configuration according to this embodiment will be described below with reference to FIGS. 1 and 2. Here, FIG. 1 is a side view of a shelf board according to an embodiment of the present invention as viewed from the edge thereof. FIG. 2 is a partially enlarged view showing the groove of the shelf board according to the embodiment of the present invention.

The shelf board 10 according to this embodiment includes a shelf board body 12 and a reinforcing member 14 that is located inside the shelf board body 12 to reinforce the shelf board body 12. The shelf main body 12 is a synthetic resin member integrally formed by extrusion molding. More specifically, the shelf main body 12 includes an upper plate 11 and a lower plate 13 that are parallel to each other, side plates 17 that connect the upper plate 11 and the lower plate 13 at both ends thereof, and an upper plate 11 and a lower plate 13. And a plurality of connecting plates 18 arranged so as to have a gap between both side plates 17. At the position corresponding to the connecting plate 18 on the upper surface of the upper plate 11, there is formed a sink mark preventing groove 60 for preventing so-called "sink mark" at the time of extrusion molding. In addition, the corners formed by the side plate 17 and the upper plate 11, which are the parts located on the front side when the shelf board 10 is installed, prevent wear of the parts when the storage part is taken in and out. The chamfered portion 62 for forming is integrally formed. Further, in the corner portion formed by the side plate 17 and the upper plate 11, which is a portion located on the opposite side when the shelf board 10 is installed, after the installation of the shelf board 10, the stored objects such as shoes are stored. A rising portion 64 is integrally formed to prevent the accumulation of mud and dust.

Further, between the connecting plate 18 adjacent to the side plate 17 and another connecting plate 18 adjacent to the connecting plate 18, a groove 16 having an opening downward is formed. That is, one groove 16 is formed near each end of the shelf body 12 in the cross section. When the groove 16 is formed, a locking portion 20 for preventing the reinforcing member 20 from falling off is formed on the groove 16 side at the lower end edges of the two connecting plates 18 that sandwich the groove 16. That is, the locking portion 20 is for preventing the reinforcing member 14 from falling out of the groove 16 when the reinforcing member 14 described later is inserted and fixed in the groove 16.

Further, between one connecting plate 18 located between the grooves 16 and another connecting plate 18 adjacent to the connecting plate 18, small shoes such as short boots, a desiccant or an insect repellent is provided. A storage auxiliary member that is a space for fixing the storage auxiliary member 40 for storing the received goods. A storage space 42 is formed, and a storage auxiliary member locking portion 44 for fixing the storage auxiliary member 40 is formed. Is provided with a storage assisting member groove 46 having an opening at the lower side while slightly projecting from the one connecting plate 18 facing the storage assisting member fixing space 42 to the storage assisting member fixing space 42 side. It is integrally formed by extrusion molding. In this case, the reinforcing portion 50 for reinforcing the storage assisting member locking portion 44 is provided at a portion of the storage assisting member locking portion 44 facing the storage auxiliary member fixing space 42 and other than the tip. Is integrally formed with the connecting plate 18 facing the storage auxiliary member fixing space 42. Although detailed illustration is omitted, the storage assisting member 40 is appropriately formed into a plate shape with a metal wire, and the upper end portion thereof is inserted into the storage assisting member groove 46 of the shelf main body 12. In addition, it is formed so that it can be locked to the storage assisting member locking portion 44. The storage auxiliary member 40 may be used by locking it to the shelf body 12 only when necessary, such as when storing a small object to be stored, and when it is unnecessary, the shelf body 12 alone can be used. Can be used.

As described above, the upper plate 11, the lower plate 13, the side plate 17, the connecting plate 18, the locking portion 20, the storage assisting member locking portion 44, the reinforcing portion 50, and the like of the shelf body 12 are extruded. It is integrally formed by molding. The plurality of connecting plates 18 are formed inside the shelf body 12 at appropriate intervals because the bending strength in the longitudinal direction of the shelf body 12 is increased and the hollow spaces between the connecting plates 18 are hollow portions. This is for forming the portion 15 to save the synthetic resin material and reduce the weight.

Next, the reinforcing member 14 will be described. The reinforcing member 14 is an elongated iron member having a U-shaped cross section, and is formed to have the same length as the length of the shelf main body 12 in the longitudinal direction. The outer diameter of the reinforcing member 14 is slightly smaller than the inner diameter of the groove 16. The reinforcing member 14 thus formed is inserted and fixed from the edge of the shelf main body 12 with the opening facing downward. In this case, a slight gap is formed between the lower edge of the reinforcing member 14 and the locking portion 20 as shown in FIG. This gap is for absorbing a bending error in the longitudinal direction of the reinforcing member 14 when the reinforcing member 14 is inserted and fixed in the groove 16.

In order to provide the thus-formed shelf board 10 at the shelf board installation location, the shelf board 10 is supported at a portion of the shelf board installation location that faces both of the front edges of the shelf board 10. A column-shaped shelf board supporting member 30 for preliminarily is provided so as to protrude in the direction of the shelf board 10 in advance. That is, the reinforcing member 14 is formed into a U-shaped cross section so that the lower side has an opening, and is fixed to the groove 16 of the shelf body 12 with the opening facing downward. By hooking the opening of the reinforcing member 14 on the shelf support member 30, the shelf 10 can be fixed at the shelf installation location. The shelf board supporting member 30 is provided so as to project at an appropriate place of the shelf board installation place so that the shelf board 10 can be prevented from rattling when the shelf board 10 is installed.

Next, the operation according to the embodiment of the present invention having such a configuration will be described with reference to FIG. The shelf plate body 12 is formed by extrusion molding, and the upper plate 11, the lower plate 13, the side plate 17, the connecting plate 18, the locking portion 20, the storage assisting member locking portion 44, and the reinforcing portion 50 are integrated. It is formed. That is, the length of the shelf main body 12 in the longitudinal direction can be arbitrarily formed.

Since a plurality of connecting plates 18 are provided between the upper plate 11 and the lower plate 13, the bending strength of the shelf main body 12 in the longitudinal direction is increased. To assemble the shelf board 10, it is only necessary to insert the reinforcing member 14 into the groove 16 of the shelf body 12 that is extrusion-molded from the edge side of the shelf board body 12. In this case, since the lower end edges of the two connecting plates 18 sandwiching the groove 16 are provided with the engaging portions 20, the lower end edges of the reinforcing members 14 are engaged with the engaging portions 20 and the reinforcing member 14 Does not fall off the groove 16.

When the shelf board 10 is installed at a predetermined location of a storage space such as a shoe box, both end portions of the shelf board 10 are provided with respect to the shelf board support member 30 projectingly formed at a predetermined position of the installation location. The upper end openings of the reinforcing member 14 can be hooked on the shelf plate supporting member 30 simply by placing the shelf plate from above, and the installation of the shelf plate 10 can be completed easily. Even if a load is applied to the shelf board 10 thus installed, since the reinforcing member 14 is made of iron, it is strong against a concentrated load and sufficiently secures the bending strength of the shelf board body 12 in the longitudinal direction. You can

The storage auxiliary member 40 is fixed by inserting the upper end portion thereof into the storage auxiliary member groove 46 and by locking the storage auxiliary member locking portion 44. Therefore, the storage auxiliary member 40 is locked to the storage auxiliary member locking portion 44 and is not dropped from the shelf plate body 12. Further, since the storage assisting member locking portion 44 is reinforced by the reinforcing portion 50, the storage assisting member 40 is locked and fixed to the storage assisting member locking portion 44, and the small storage cover member 40 is mounted on the storage assisting member 40. Even if a stored item is placed, no problem occurs in the strength of the storage assisting member locking portion 44.

Next, the effect of the embodiment of the present invention will be described. Since the shelf body 12 is extruded in the longitudinal direction of the shelf body 12, it is possible to manufacture the shelf body 12 of an arbitrary length with a mold material for extrusion having the lateral width. As a result, there is an effect that the member can be made common as a shelf board for other storage furniture or the like that can be used in the width. That is, it is possible to manufacture many kinds of shelves having an arbitrary length with one die for extrusion.

When the shelf board 10 is supported by the shelf board support member 30, the concentrated load applied by the shelf board support member 30 can be received by the reinforcing member 14 inserted and fixed in the groove 16. Therefore, since it is not necessary to receive this concentrated load only on the shelf main body 12, the upper plate 11 and the lower plate 13 of the shelf main body 12 can be formed in a thin shape, and the weight of the main shelf 12 can be reduced. And it saves synthetic resin material. Further, since the reinforcing member 14 is made of iron, it is possible to ensure a predetermined strength.

Further, since the groove 16 is provided in the shelf body 12, the reinforcing member 14 can be easily fixed to the shelf body 12 simply by inserting the reinforcing member 14 from the edge of the shelf body 12. Further, since the shelf body 12 is provided with the engaging portion 20, the reinforcing member 14 is engaged with the engaging portion 20 and the reinforcing member 14 does not fall off from the shelf body 12. Further, since a slight gap is formed between the lower end edge of the reinforcing member 14 and the locking portion 20, there is a bending error in the longitudinal direction of the reinforcing member 14 when the reinforcing member 14 is inserted into the groove 16. However, this can be absorbed, and the work of inserting and fixing the reinforcing member 14 can be performed smoothly.

Further, since a plurality of thin plate-like connecting plates 18 are provided inside the shelf main body 12 along the longitudinal direction, it is difficult to bend with respect to the load distributed along the longitudinal direction of the shelf main body 12. The bending strength of the shelf body 12 can be ensured. Further, since the lower side of the reinforcing member 14 is an opening, the reinforcing member 14 is simply placed from above the shelf supporting member 30 with respect to the shelf supporting member 30 provided in the portion where the shelf 10 is installed. With this, the opening of the reinforcing member 14 can be hooked and fixed to the shelf plate supporting member 30, and the assembling work of the shelf plate 10 is easy.

On the other hand, since the storage auxiliary member 40 can be locked and fixed to the storage auxiliary member locking portion 44, the following effects can be obtained. That is, when the shelf board 10 is used for storage furniture, a shoe box, etc., the shelf board 10 must be mixed and housed with objects to be stored having different heights such as short shoes and boots. If not, the storage assisting member 40 is fixed to the lower part of the shelf 10 which is one step higher than the shelf 10, and the storage assisting member 40 is provided with another small receipt such as short boots. Can be stored. As a result, it becomes possible to effectively use the storage space above the small object to be stored, which has not been used and is wasted.

Further, if a small object to be stored, such as a desiccant or insect repellent, is placed on the storage auxiliary member 40, the storage space that has not been used and is wasted can be effectively used, as in the above case. It will be available. Further, since the storage assisting member locking portion 44 is reinforced by the reinforcing portion 50, the storage assisting member 40 is locked and fixed to the storage assisting member locking portion 44, and the storage assisting member 40 is compactly mounted on the storage assisting member member 40. Even if an object to be stored is placed, not only does the problem of the strength of the storage assisting member locking portion 44 occur, but also the strength of the entire shelf main body 12 is secured.

Since the sink mark prevention groove 60 is formed at the position corresponding to the connecting plate 18 on the upper surface of the upper plate 11, it is possible to prevent so-called “sink” at the time of extrusion molding. There is also an effect. Next, variations of the present invention will be described. In the above embodiment, the reinforcing portion 50 is described as being formed so as to integrally connect the storage assisting member locking portion 44 and the connecting plate 18, but the storage assisting member locking portion 44 is described. The upper plate 11 and the upper plate 11 may be integrally connected.

Further, in the above-mentioned embodiment, although the shelf supporting member 30 is described as a columnar member, it is limited to the columnar member as long as it has a predetermined strength and can support the reinforcing member 14. I can't. Further, although the reinforcing member 14 has been described as being made of iron, it can be made of aluminum or the like as long as the predetermined strength can be ensured, which can contribute to the reduction of the weight of the entire shelf board 10.

Although not shown in the above-mentioned embodiment, when the shelf board 10 is used in a shoe box or the like, by providing the hollowing portion 15 with a desiccant or an aromatic agent, the shoe box or the like is removed. The effect is that it can be used comfortably. If the reinforcing portion 50 is not provided on the shelf main body 12, the shelf 10 according to the embodiment of the present invention is provided.

[0035]

[Effect of device]

 According to the first aspect of the present invention, it is possible to provide a shelf board which can be formed into an arbitrary length by extrusion molding, can secure a predetermined strength, and can effectively use a storage space. According to the second aspect of the present invention, in addition to the effect of the first aspect of the present invention, a shelf board having further increased strength can be provided and the shelf can be easily attached to the shelf board installation place. A board can be provided.

[Brief description of drawings]

FIG. 1 is a side view of a shelf board according to an embodiment of the present invention as viewed from its front edge.

FIG. 2 is a partially enlarged view showing a groove of a shelf board according to an embodiment of the present invention.

FIG. 3 is an enlarged cross-sectional view showing a shelf board according to Japanese Utility Model Laid-Open No. 63-152443.

FIG. 4 is a back view showing a shelf plate according to Japanese Utility Model Laid-Open No. 63-152443.

[Explanation of symbols]

10 Shelf board 11
Upper plate 12 Shelf plate body 13
Lower plate 14 Reinforcing member 15
Hollow-out part 16 Groove 17
Side plate 18 Connection plate 20
Locking part 30 Shelf board support member 40
Storage auxiliary member 42 Storage auxiliary member fixing space 44
Storage assist member locking part 46 Storage assist member groove 50
Reinforcement part 60 Anti-sink groove 62
Chamfering part 64 Rising part 100 Shelf plate 115
Side frame 116 Arm 121
Frame made of synthetic resin 122 Annular groove 123
Shelf board member 124 Locking hole 126
Metal plate 127 Locking member

Claims (2)

[Scope of utility model registration request] 1. A shelf board installed in storage furniture or the like, comprising:
The shelf board is provided with a shelf board body and a reinforcing member that is positioned inside the shelf board body to reinforce the shelf board body.
An upper plate and a lower plate that are parallel to each other, a side plate that connects the upper plate and the lower plate at both end portions thereof, and a plurality of units that connect the upper plate and the lower plate and that have a gap between both side plates. A connecting plate is provided, and between the one connecting plate on both sides of the cross section and the other connecting plate or side plate adjacent to the connecting plate, and on the connecting plate or side plate side, the reinforcement member is prevented from falling off. A groove is formed with an opening at the bottom while leaving a few locking portions for, and between one connecting plate located between the groove and another connecting plate adjacent to the connecting plate. A storage auxiliary member fixing space, which is a space for fixing a storage auxiliary member for accommodating a small object to be accommodated, such as boots, a drying material, or an insect repellent, is formed, and a storage for fixing the storage auxiliary member is formed. Place the auxiliary member locking part in the storage auxiliary member fixing space. The at least one connecting plate is integrally formed by extrusion molding so as to have a groove for the storage assisting member whose opening is downward while projecting slightly toward the space for fixing the storage assisting member, and the reinforcing member is a shelf on the groove. A shelf board which is formed so that it can be inserted from a small edge of the board body and has a length substantially the same as the longitudinal length of the shelf body. 2. A shelf plate supported by a shelf plate supporting member projecting in a shelf plate forehead direction from a portion of the shelf plate at a location where the shelf plate is installed, the reinforcing member being open downward. Is formed into a U-shaped cross section so that the opening faces downward and is inserted and fixed in the groove of the shelf main body from the small edge of the shelf main body, and the opening of the reinforcing member is formed in the shelf support member. It is formed so that it can be fixed to the shelf board installation location by hooking it, and the reinforcing portion for reinforcing the storage auxiliary member locking portion is the portion facing the storage auxiliary member fixing space of the storage auxiliary member locking portion. 2. The shelf board according to claim 1, wherein a part other than the tip is integrally formed with a connecting plate or an upper plate facing the storage auxiliary member fixing space.