JP2011173500A - Display rack - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display rack capable of facilitating the mounting work of a caster and achieving the high stability of a caster mounting portion. <P>SOLUTION: The display rack 1 is provided with a caster mounting member 3 extending between legs 2, 2. A long engaging hole 25 is formed at each of the front and rear of a bottom face of the leg 2. At both ends of the caster mounting member 3, a connecting portion 11 to the leg 3 is formed by bending. The connecting portion 11 has a vertical portion 12, a horizontal portion 13, and a lateral hook-shaped vertical hook 14 continuous to a part of an end of the horizontal portion 13. The hook 14 of the caster mounting member 3 is latched at an engaging hole 25 in the leg 2, the bottom face 23 of the leg 2 is abutted on a horizontal portion 13 of the caster mounting member 3, and an inner side face 22 of the leg 2 is abutted on the vertical portion 12 of the caster mounting member 3, so that the leg and the caster mounting member are connected and fixed. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a display shelf used for displaying various articles. In particular, the present invention relates to a display shelf that can be easily attached to casters and that has a sufficient strength at the caster attachment portion.

  A display shelf is known in which casters are attached to the leg portions to facilitate movement thereof. As a technique for attaching casters to leg portions of display shelves, for example, as disclosed in Patent Document 1, a method in which a caster attachment member to which casters are attached in advance is screwed to the leg portions with bolts and nuts is widely performed. Yes. As compared with the case where the casters are individually mounted, the display shelf can be assembled and disassembled more quickly by using the caster mounting member to which the casters are previously mounted.

  Also, in various fixtures, an engagement hole is provided in one member, and a hook (hook) provided in the other member is locked in this hole, so that the other member is perpendicular to one member. The fixing technique is known. However, when such a locking structure is applied to a large and heavy display shelf, there is a gap between the collar and the engagement hole, so that sufficient strength cannot be obtained, and the entire display shelf There was a case of causing wobble. Patent Document 2 discloses a technique for preventing wobble by obtaining a necessary connection strength by adding a fixing metal fitting to a connection portion in addition to a locking structure using a hook. The bottom surface of the fixing bracket disclosed in Patent Document 2 is pressed against the inner side surface of the column with bolts.

JP 2008-73470 A JP 2002-345608 A

  Conventionally, in order to attach a caster to a leg portion of a display shelf, the caster is directly screwed to the leg portion, or a caster mounting member to which the caster is previously attached is screwed using a bolt and a nut. It was. Since such a screwing operation is very time-consuming, a simpler and more reliable caster mounting technique has been demanded.

  The present invention has been made in view of the above-described problems, and relates to a display shelf with casters that can be easily assembled and disassembled and that has a sufficient strength at an attachment portion.

    The display shelf of the present invention comprises at least a pair of left and right rectangular legs extending in the front-rear direction, and a caster attachment member that connects the legs and is attached with casters. In the display shelf of the present invention, a horizontally long engagement hole is provided on the bottom surface of each leg portion, and a connecting portion with each leg portion is formed at both ends of the caster mounting member by bending. Each of the connecting portions includes a vertical portion that is continuous with the end portion of the caster mounting member, a horizontal portion that is continuous with the end portion of the vertical portion, and a horizontal hook-shaped vertical flange portion that is continuous with a part of the end portion of the horizontal portion. Have. Then, the flange portion of the connecting portion of the caster mounting member is locked in the engaging hole of the leg portion, the bottom surface of the leg portion is in contact with the horizontal portion of the connecting portion, and the inner side surface of the leg portion is the vertical portion of the connecting portion. By abutting, the leg portion and the caster mounting member are connected.

  In the display shelf of the present invention, the flange provided on the caster mounting member is locked in the engagement hole of the leg, and two adjacent surfaces of the leg are respectively adjacent to the connecting part of the caster mounting member. Even if a load is applied to any one of the caster mounting member and the leg part from any direction, the caster mounting member and the leg part may wobble or separate. And a firmly connected state can be maintained.

  The display shelf according to the present invention further includes a pin having a bent central portion and a length from the central portion to the tip portion being longer than the width of the bottom surface of the leg portion. In the display shelf of the present invention, a laterally long pin hole is formed on the inner side surface of each leg part, and the vertical part of the connecting part of the caster mounting member is in a position aligned with the pin hole of the leg part at the time of connection. A pin hole having substantially the same shape as the pin hole of the leg portion is formed. And the display shelf of the present invention is such that the leg portion and the caster mounting member are connected and the pin hole of the leg portion and the pin hole of the caster mounting member are overlapped, and the pin is inserted into the pin hole. The connection between the leg portion and the caster mounting member is further strengthened.

  In the display shelf of the present invention, the casters are attached by connecting the caster attachment members to the leg portions by locking the collar portion and the engagement holes. The display shelf according to the present invention can be easily assembled or disassembled in a short time compared to a display shelf in which casters are screwed and fixed one by one with bolts and nuts, or caster mounting members are fixed to legs with bolts and nuts. It can be performed.

  In the display shelf of the present invention, the bottom surface of the leg portion is in contact with the horizontal portion of the connecting portion of the caster mounting member in a state where the hook portion of the connecting portion is locked in the engaging hole of the leg portion. Since the side surface is in contact with the vertical part of the connecting part, even if a force is applied from any direction to either the caster mounting member or the leg part, the caster mounting member and the leg part may wobble. Without being displaced, a firmly connected state can be maintained.

  In the display shelf of the present invention, the caster mounting member and the leg portion are integrated by connecting the connecting portion formed on the caster mounting member to the leg portion. At this time, since small parts such as bolts and nuts are not used, there is no possibility that the small parts in use at the time of assembly or disassembly are lost and the caster cannot be used.

  In the display shelf of the present invention, the leg portion and the caster mounting member are more reliably fixed by inserting the pin into the pin hole aligned between the leg portion and the caster mounting member.

It is a perspective view which shows the display shelf 1 of the Example of this invention. FIG. 3 is an exploded perspective view of a part of a leg part 2 of the display shelf 1 and a part of a connecting part 11 of a caster mounting member 3. 3 is a side view of a pin 30. FIG. It is the partial cross-sectional view of the longitudinal section of the leg part 2 of the display shelf 1, and a part of the caster attachment member 3 connected with this. It is the VV sectional view taken on the line of the display shelf 1 shown in FIG.

  Hereinafter, as an embodiment for carrying out the present invention, a display shelf in which a support column is disposed at the rear end of a pair of left and right legs and a plurality of shelf boards are disposed on the front surface of the support column will be described in detail as an example. The structure of the leg portion and the caster mounting member of the present invention includes a display shelf in which a support column is arranged in the center of the leg unit and a plurality of shelf boards are arranged on both the front and back sides of the support column, and three or more leg units. The present invention can also be applied to horizontally long display shelves each having a column.

  Hereinafter, an example of a display shelf for carrying out the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing a display shelf 1 of the present embodiment. The display shelf 1 of the present embodiment includes a pair of left and right legs 2 extending in the front-rear direction, and a pair of front and rear that extends between the legs 2 and is connected to the front end and the rear end of the legs 2, respectively. A caster mounting member 3, a pair of left and right columns 5 disposed vertically on the legs 2, and a plurality of shelves 6 disposed between the columns 5 and extending forward are provided. In many cases, one of the plurality of shelf boards 6 of the display shelf 1 in the present embodiment is arranged at the lowermost stage of the support column 5 so as to be in contact with the leg portion 2 and the caster mounting member 3. However, in FIG. 1, in order to more clearly display the arrangement of the leg portions 2 and the caster mounting members 3, the display shelf 1 is shown with the shelf plate 6 of that portion removed.

  The “front-rear direction” in the display shelf of the present invention refers to a depth direction of the display shelf 1 and a direction substantially parallel to the axial direction of the legs 2. The “left-right direction” refers to a width direction of the display shelf 1 and a direction substantially parallel to the axial direction of the caster mounting member 3. The “vertical direction” refers to a height direction of the display shelf 1 and a direction substantially parallel to the column 5.

  FIG. 2 is an exploded perspective view in which the front end portion of the leg portion 2 of the display shelf 1 and the caster attachment member 3 connected to the leg portion 2 are partially enlarged. The caster mounting member 3 is a linear member including a bottom wall 10 and side walls provided on the left and right sides of the bottom wall 10. Two or more casters 4 are attached to the bottom wall 10 of the caster attachment member 3 in advance. Moreover, the connection part 11 for connecting with the leg part 2 is formed in the both ends of the caster attachment member 3 by the bending process. The connecting portion 11 is connected to the end of the bottom wall 10 of the caster mounting member 3 and is perpendicular to the bottom surface. The horizontal portion 13 is connected to the end of the vertical portion 12 and is parallel to the bottom wall 10. 13 and a flange portion 14 which is connected to a part of the end portion 13 and has a laterally saddle shape. The flange portion 14 is provided at the end of the connecting portion 11 so as to be perpendicular to the bottom wall 10, and the tip end of the flange portion 14 protrudes outside the bottom wall 10 of the caster mounting member 3. .

  The leg portion 2 is formed of a rectangular pipe material having a rectangular cross section, and horizontally long engagement holes 25 are provided at two locations near both ends of the bottom surface 23. The engagement hole 25 is formed in an oval shape as a whole or a substantially rectangular shape with chamfered vertices, and the length thereof is the length of the portion where the horizontal portion 13 and the flange portion 14 of the caster mounting member 3 are connected. It is longer than the length and shorter than the full length of the collar portion 14. Further, in the leg portion 2, the distance from the inner surface 22 to the center of the engagement hole 25 is equal to the distance from the vertical portion 12 to the flange portion 14 of the caster mounting member 3.

  A horizontally long pin hole 26 is formed on the inner side surface 22 of the leg portion 2 of the display shelf 1 on the front side and the rear side. Further, the vertical portion 12 of the connecting portion 11 of the caster mounting member 3 is the same as the pin hole 26 at a position where it is aligned with the pin hole 26 of the leg portion 2 when the collar portion 14 and the engagement hole 25 are engaged. The pin hole 15 having the shape is formed.

  The pin 30 can be inserted into the pin holes 15 and 26 in a state where the leg portion 2 and the caster mounting member 3 are connected and the pin hole 15 and the pin hole 26 are overlapped. An example of the pin 30 is shown in FIG. The pin 30 has a head portion 31 at one end, and a central portion 33 bent at a substantially right angle.

  FIG. 4 shows a partially enlarged front view of the longitudinal section of the tip of the leg portion 2 and the connecting portion 11 of the caster mounting member 3 connected thereto. When the flange 14 at the tip of the connecting portion 11 of the caster mounting member 3 is locked in the engagement hole 25 of the leg portion 2, the upper surface of the horizontal portion 13 of the connecting portion 11 of the caster mounting member 3 is the bottom surface of the leg portion 2. 23, and the inner side surface 22 of the leg portion 2 comes into contact with the vertical portion 12 of the connecting portion 11 of the caster mounting member 3. Further, in this state, the pin hole 26 of the leg 2 and the pin hole 15 of the caster mounting member 3 are aligned, and the pin 30 is inserted into the pin holes 15 and 26. In this way, the display shelf 1 is locked in the engagement holes 25 of the collar portion 14 and the leg portion 2, and two adjacent surfaces of the leg portion 2 are adjacent to each other of the connecting portions of the caster attachment members 3. The two pins are in contact with each other, and are further connected and fixed by inserting the pin 30 into the pin holes 15 and 26.

  FIG. 5 is a cross-sectional view taken along line VV of the display shelf 1 shown in FIG. The pin hole 26 of the leg 2 and the pin hole 15 of the caster mounting member 3 are formed such that the vertical inner diameter is short and the horizontal inner diameter is long. The pin 30 inserted into the pin holes 15, 26 has a central portion 33 bent at a substantially right angle, and the length of the tip portion 34 extending from the central portion 33 to the other end is the length of the bottom surface 23 of the leg portion 2. It is formed longer than the width. For this reason, the pin 30 once inserted into the pin holes 15 and 26 interferes with the outer surface 21 of the leg 2 when the tip 30 is taken out with the tip 34 facing downward. In order to take out the pin 30 from the pin holes 15 and 26, it is necessary to take out the tip portion 34 in a state in which it is directed in the horizontal direction. Further, as shown in FIG. 5, since the overall length of the collar portion 14 is longer than the length of the engagement hole 25, the caster 14 can be removed from the leg portion 2 in order to remove the collar portion 14 once locked in the engagement hole 25. The attachment member 3 is relatively rotated.

  With the above configuration, the leg 2 and the caster mounting member 3 are firmly fixed to each other once they are connected. The connection between the leg portion 2 and the caster mounting member 3 of this embodiment is maintained sufficiently firmly even when various loads are received while the display shelf 1 is being moved by the caster 4. Below, loads that may be applied to the connected parts of the legs 2 and the caster mounting member 3 during the movement of the display shelf 1 are classified, and how the state of the connected parts is maintained with respect to those loads. Explain how.

The following three types are assumed as main loads applied to the portion where the leg 2 and the caster mounting member 3 are connected.
(1) It is a load generated due to unevenness of the moving floor surface, and is a load in the vertical direction transmitted from the caster 4 to the leg portion 2 through the caster mounting member 3.
(2) A load generated by pushing and moving the column 5 or the shelf 6 and is a load in the left-right direction or the front-rear direction transmitted from the column to the caster mounting member 3 through the leg 2.
(3) A load generated by lifting and moving the support column 5 or the shelf board 6, and a load in the vertical direction transmitted from the support column to the caster mounting member 3 via the leg 2.
Below, the state of the connected part of the leg part 2 and the caster attachment member 3 when receiving the three types of loads will be described.

  The state of the connected portion of the leg 2 and the caster mounting member 3 when a load in the vertical direction is applied from the caster mounting member 3 to the leg 2 will be described. The bottom surface 23 of the leg portion 2 is supported by the entire horizontal portion 13 of the connecting portion 11 of the caster mounting member 3. Further, the leg portion 2 and the caster mounting member 3 are restrained in the vertical direction by the locking of the flange portion 14 and the engagement hole 25, and the relative displacement between the members is suppressed. As a result, the leg 2 and the caster mounting member 3 are simultaneously displaced in the vertical direction, and the state where they are connected and fixed to each other without causing wobble or separation between the members is strong. Maintained.

  The state of the connected portion of the leg 2 and the caster mounting member 3 when a load in the left-right direction or the front-rear direction is applied from the leg 2 to the caster mounting member 3 will be described. The leg portion 2 and the caster mounting member 3 are restrained in the left-right direction and the front-rear direction by the locking of the flange portion 14 and the engagement hole 25, and the relative displacement between the members is suppressed. In addition, the relative rotation between the leg 2 and the caster mounting member 3 is suppressed because the inner side surface 22 of the leg 2 and the vertical portion 12 of the connecting portion 11 of the caster mounting member 3 are in contact with each other. The As a result, the leg 2 and the caster mounting member 3 are displaced simultaneously in the left-right direction and the front-rear direction, and are connected and fixed to each other without wobbling or shifting between the members. Is firmly maintained.

  The state of the connected portion of the leg 2 and the caster mounting member 3 when a load in the vertical direction is applied from the leg 2 to the caster mounting member 3 will be described. The leg portion 2 and the caster mounting member 3 are restrained in the vertical direction by the locking of the flange portion 14 and the engagement hole 25, and the relative displacement between the members is suppressed. In addition, the pin hole 26 of the leg 2 and the pin hole 15 of the caster mounting member 3 are aligned, and the pin 30 is inserted into the pin holes 15 and 26, so that the leg 2 and the caster are mounted. The member 3 is restrained in the vertical direction and relative displacement between the members is suppressed. As described above, the coupling between the two portions by the flange portion 14 and the pin 30 causes the leg portion 2 and the caster mounting member 3 to be simultaneously displaced in the vertical direction, causing wobbling or separation between the members. In other words, the connected and fixed state is firmly maintained.

  Moreover, the display shelf 1 of the present embodiment is very easy to assemble and disassemble while the connecting portion between the caster mounting member 3 and the leg portion has sufficient strength as described above. At the time of assembly, the pin hole 26 of the leg part 2 and the pin hole 15 of the caster attachment member 3 are naturally aligned by engaging the flange part 14 of the caster attachment member 3 with the engagement hole 2 of the leg part 2. Therefore, the assembly is completed by inserting the pin 30 into the aligned pin holes 15 and 26. At the time of disassembly, the pin 30 can be removed from the pin holes 15 and 26, the caster mounting member 3 is rotated relative to the leg 2, and the collar 14 is removed from the engagement hole 25.

  As mentioned above, although the specific example of this invention was described in detail in the Example, these are only illustrations and do not limit a claim. The technology described in the claims includes various modifications and changes of the specific examples illustrated above. For example, in the embodiment, the case where the leg portion 2 has a rectangular cross-sectional shape and the caster mounting member 3 has a U-shaped cross-sectional shape has been described, but the shape of these members is the shape of the connecting portion. It is possible to change freely as long as the function is secured. Further, the arrangement of the pin holes, the engagement holes, and the collars can be changed as appropriate according to the dimensions of the connecting part.

DESCRIPTION OF SYMBOLS 1 Display shelf 2 Leg part 3 Caster attachment member 4 Caster 5 Column 6 Shelf board 10 Bottom wall 11 of a caster attachment member 11 Connection part 12 Vertical part 13 Horizontal part 14 Ridge part 15 Pin hole 21 of caster attachment member Outer side surface 22 Inner side surface 23 Bottom surface 24 Top surface 25 Engagement hole 26 Pin hole 30 of leg part 31 Pin 31 Head part 33 Central part 34 Tip part

Claims (2)

A display shelf comprising at least a pair of left and right rectangular legs (2) extending in the front-rear direction and a caster attachment member (3) to which the legs are connected and to which a caster (4) is attached,
A horizontally long engagement hole (25) is provided on the bottom surface of each leg,
At both ends of the caster mounting member, connecting portions (11) with the respective leg portions are formed by bending,
Each of the connecting portions includes a vertical portion (12) connected to an end portion of the caster mounting member, a horizontal portion (13) connected to an end portion of the vertical portion, and a horizontal flange connected to a part of the end portion of the horizontal portion. A vertical ridge (14) in the form of
The hook portion of the connecting portion of the caster mounting member is locked in the engaging hole of the leg portion, the bottom surface of the leg portion is in contact with the horizontal portion of the connecting portion, and the inner side surface of the leg portion is the connecting portion. The display shelf, wherein the leg portion and the caster mounting member are connected by abutting against a vertical portion of the portion. The center part is bent, and further comprises a pin (30) whose length from the center part to the tip part is longer than the width of the bottom surface of the leg part,
A horizontally long pin hole (26) is formed on the inner surface of each leg,
A pin hole (15) having substantially the same shape as the pin hole of the leg portion is formed in the vertical portion of the connection portion of the caster mounting member at a position aligned with the pin hole of the leg portion at the time of connection,
In a state where the leg portion and the caster mounting member are connected and the pin hole of the leg portion and the pin hole of the caster mounting member are overlapped, the pin is inserted through the overlapped pin hole, The display shelf according to claim 1, wherein the connection between the leg portion and the caster mounting member is further strengthened.

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