JP6624419B2 - Multi-stage structure - Google Patents

Description

  The present invention relates to a multi-stage structure.

  2. Description of the Related Art A multi-stage structure in which a plurality of steps are arranged in a staircase is used in various situations. The multi-stage structure is used, for example, for display shelves of goods, stairs, steps, and the like. Such a multi-stage structure is manufactured by stacking block-shaped equipment such as a cardboard box, for example. Further, for example, a product display shelf having a multi-stage structure manufactured by alternately arranging a bottom plate and a shelf plate has been proposed. Stairs that can be folded by connecting a plurality of plate-like members with a frame have also been proposed (for example, see Patent Documents 1 and 2).

JP 2006-288826 A JP 2003-191793 A

  Producing such a multi-stage structure imposes a heavy burden on an operator. Furthermore, since the manufactured multi-stage structure has a step-like structure, a large space is required during storage. A foldable staircase can be stored in a small space, but it is difficult to adjust the relative position of each step of the staircase. Therefore, an object of the present invention is to provide a multi-stage structure that can be stored in a small space, can easily pull out members of each stage when used, and can adjust the relative position of each stage. I do.

  In the present invention, the following means are employed in order to solve the above problems. That is, the present invention is the following multi-stage structure. The present multi-stage structure is a multi-stage structure capable of forming an N-stage (N is an integer of 3 or more) stepwise structure in a predetermined direction. The multi-stage structure includes a first member, an N-th member, and an n-th member. The first member is supported on the floor and constitutes the highest first step in the step-like structure. The Nth member is supported on the floor and forms the lowest Nth step in the step-like structure. The first member and the N-th member are relatively movable in a predetermined direction and in a direction opposite to each other. The n-th member is an n-th member forming an n-th (n is a predetermined integer of 1 <n <N) stepped portion, and is supported on the floor so as to be relatively movable in a predetermined direction and in a reverse direction to each other. Both the (n-1) -th member and the (n + 1) -th member are supported by both the (n-1) -th member and the (n + 1) -th member so as to be relatively movable in a predetermined direction and a reverse direction. The nth member is lower than the (n-1) th step formed by the (n-1) th member, and higher than the (n + 1) th step formed by the (n + 1) th member and lower than the (n-1) th step. Construct a step.

  According to such an invention, the n-th member is supported movably relative to both the (n-1) -th member and the (n + 1) -th member in a predetermined direction or a reverse direction. Therefore, such a multi-stage structure can separate or approach the n-th member from the adjacent (n-1) -th member or the (n + 1) -th member. Therefore, with such a multi-stage structure, the members of each step can be stored in a space-saving manner by bringing them close to each other when not in use, and the members of each step can be easily pulled out during use. Furthermore, since the n-th member is relatively movable with respect to the (n-1) -th member and the (n + 1) -th member, it is possible to adjust the relative position of the step formed by the n-th member.

  Further, the present invention may have the following features. The first member and the N-th member are movably supported on the floor via casters. According to such an invention, since the first member and the N-th member are movably supported on the floor by the casters, the multi-stage structure can easily move on the floor.

  Further, the present invention may have the following features. The n-th member is movably supported via a caster with respect to both the (n + 1) -th member and the (n-1) -th member. According to such an invention, the reference of the height of the n-th member is the (n + 1) -th member and the (n-1) -th member. Therefore, it is possible to easily ensure the height accuracy of the n-th member with respect to the (n + 1) -th member and the (n-1) -th member. As a result, it is possible to maintain a state suitable for relative movement of the n-th member with the (n + 1) -th member and the (n-1) -th member. Further, the height of the n-th step with respect to the (n-1) -th step and the (n + 1) -th step can be managed with high accuracy. Furthermore, since the n-th member is not directly supported on the floor, the number of casters supported on the floor can be reduced, and crowding and interference between the casters supported on the floor can be suppressed.

  Further, the present invention may have the following features. At least one of the s-th member (s is an integer and 2 ≦ s ≦ N) can be stored in the s-th member. According to such an invention, the length of the multi-stage structure in the predetermined direction can be reduced by storing the s-th member in the s-th member.

  Further, the present invention may have the following features. All of the s-th members (s is an integer and 2 ≦ s ≦ N) are stored in the s−1-th member and the s-th member (s is an integer and 2 ≦ s ≦ N). All are characterized by being able to transition between a staircase state that has been removed from storage in the s-1th member. According to such an invention, all of the s-th member can be stored in the s-th member, so that when the multi-stage structure is not used, it can be stored in a space-saving manner. In addition, since the storage state and the staircase state can be transitioned, the staircase state can be easily set at the time of use.

  Further, the present invention may have the following features. All of the first to N-th steps are provided horizontally with the floor. According to such an invention, when the multi-stage structure is used as a stair, it is easier to climb as compared with the case where the step is inclined.

  Further, the present invention may have the following features. In at least one of the r-th member (r is a predetermined integer of 2 ≦ r ≦ N), the difference between the height of the r-th step and the height of the r−1-th step in the r−1 member is Includes an auxiliary step that has a low height and forms an auxiliary step between the r-th step and the (r-1) -th step when placed on the r-th step It is characterized by having been done. In such a multi-stage structure according to the present invention, it is possible to prepare an auxiliary step between the r-th step and the (r-1) -th step.

  According to the present invention, it is possible to provide a multi-stage structure that can be stored in a small space, can easily pull out the members of each step when used, and can adjust the relative position of the step portion of each step.

FIG. 1 is an example of a perspective view of a display platform display shelf according to the first embodiment. FIG. 2 is a perspective view showing an example of a state in which each stage of the display platform display shelf according to the first embodiment is stored. FIG. 3 is a diagram illustrating an example of the position of the lower drawer in the display platform display shelf according to the first embodiment. FIG. 4 is an example of a front view of a lower drawer of the display stand for dolls. FIG. 5 is an example of a right side view of the lower drawer in the display stand. FIG. 6 is an example of a left side view of the lower drawer in the display platform display shelf. FIG. 7 is a diagram illustrating an example of the position of the middle-stage drawer on the display platform display shelf. FIG. 8 is an example of a front view of a middle drawer on a display stand for a doll. FIG. 9 is an example of a right side view of the middle drawer in the display platform display shelf. FIG. 10 is an example of a left side view of the middle drawer in the display platform display shelf. FIG. 11 is an example of a schematic front view showing a state where the lower drawer is stored in the lower drawer storage part of the middle drawer. FIG. 12 is a diagram illustrating an example of the position of the frame portion on the display platform display shelf. FIG. 13 is an example of a front view of a frame portion on a display platform display shelf. FIG. 14 is an example of a right side view of the frame portion of the display platform display shelf. FIG. 15 is an example of a left side view of the frame portion of the display platform display shelf. FIG. 16 is an example of a schematic front view showing a state where the middle drawer is stored in the middle drawer storage part of the upper drawer. FIG. 17 is a diagram showing an example of the arrangement of casters and rails on a display platform display shelf. FIG. 18 is a diagram illustrating an example of a state in which the upper auxiliary shelf, the middle auxiliary shelf, and the lower auxiliary shelf of the display shelf are pulled out upward. FIG. 19 is a diagram illustrating an example of a state where two display stand display shelves are arranged back to back.

  Hereinafter, a display platform display shelf according to an embodiment will be described with reference to the drawings. The configuration of the embodiment described below is an exemplification, and the present invention is not limited to the configuration of the embodiment.

<First embodiment>
FIG. 1 is an example of a perspective view of a display platform display shelf 1 according to the first embodiment. The ladder display shelf 1 is a product display shelf having three tiers with different heights from the upper tier 31 of the upper tier, the middle tier 21 of the middle tier, and the lower tier 11 of the lower tier. The display platform 1 has a plurality of shelves of different heights, so that a display of the display platform is possible. The display platform display shelf 1 includes a frame 30 that provides an upper shelf 31, a middle drawer 20 that provides a middle shelf 21, a lower drawer 10 that provides a lower shelf 11, and a plurality of casters 50. In the display platform 1, as illustrated in FIG. 1, a lower drawer 10, a middle drawer 20, and a frame 30 are arranged in order of height. The display stand 1 for dolls can be easily moved on the floor by including a plurality of casters 50. Hereinafter, in this specification, the lower drawing part 10 side in FIG. 1 is referred to as a front, and the frame part 30 side as a back (or a rear). Further, the right side is set to the right and the left side is set to the left when facing the display stand 1 shown in FIG. Further, the upper shelf 31 side in FIG. 1 is the upper side, and the caster 50 side in FIG. 1 is the lower side. The dollan display shelf 1 is an example of the “multi-stage structure” of the present invention.

  FIG. 2 is an example of a perspective view of a state where each stage of the display platform display shelf 1 according to the first embodiment is stored. The frame portion 30 can accommodate the middle-stage drawer 20. The middle drawer 20 can accommodate the lower drawer 10. In the display platform 1, the lower drawer 10 is housed in the middle drawer 20 and the middle drawer 20 is housed in the frame 30, so that the length in the front-rear direction can be reduced as illustrated in FIG. . That is, the display stand 1 can be stored in a small space. Further, the dollan display shelf 1 is a product display shelf having a multi-stage structure as illustrated in FIG. 1 by the lower drawer 10 being pulled out from the middle drawer 20 and the middle drawer 20 being pulled out from the frame 30. It can be used. Here, the upper shelf 31, the middle shelf 21, and the lower shelf 11 are examples of the "step" of the present invention.

  The lower drawer 10 provides a lower shelf 11, which is the lowest shelf of the display shelf 1. FIG. 3 is a diagram illustrating an example of the position of the lower drawer 10 in the display platform display shelf 1 according to the first embodiment. The lower drawing part 10 is a part indicated by a solid line in FIG. That is, the lower drawer 10 is located at the forefront of the display stand 1 in a state where the middle drawer 20 is pulled out from the frame 30 and the lower drawer 10 is pulled out from the middle drawer 20. Note that a part of the lower drawer 10 actually penetrates into the middle drawer 20, but the intruding part is not shown in FIG.

  The lower drawer 10 has a lower shelf 11, a lower auxiliary shelf 12, a lower box 13, and a caster 50. FIG. 4 is an example of a front view of the lower drawer 10 in the display stand 1 for dolls. FIG. 5 is an example of a right side view of the lower drawer 10 in the display stand 1 for dolls. FIG. 6 is an example of a left side view of the lower drawer 10 in the display platform display shelf 1. Each of the lower front plate 13a illustrated in FIG. 4, the lower right side plate 13b illustrated in FIG. 5, and the lower left side plate 13c illustrated in FIG. 6 is a plate-shaped member. The lower box portion 13 is formed in a U-shape in a top view by a lower front plate 13a, a lower right side plate 13b, and a lower left side plate 13c. The lower box part 13 makes the internal structure of the display platform display shelf 1 invisible from the outside.

  Rails 15, 15 are provided below the left and right ends of the lower box portion 13, respectively. The rails 15, 15 support casters 26a of a middle-stage drawer 20, which will be described later, so as to be movable in the front-rear direction. Stoppers 15a, 15a are provided at the front and rear ends of the rails 15, 15 so as to close the front and rear ends of the rails 15, 15, respectively. The stopper 15a, 15a regulates the range of movement of the caster 26a of the middle drawer 20 described later in the front-rear direction. The rails 15 and 15 are connected to each other at two front and rear positions by caster support portions 50a. The casters 50 are provided at two locations on the left and right below the caster support 50a. That is, the lower drawer 10 is movably supported on the floor via the four casters 50.

  The lower shelf 11 is formed flat, and is provided horizontally on the lower box portion 13. The width of the lower shelf 11 is larger than the width of the lower box portion 13. That is, the lower shelf 11 has lower shelf projecting portions 11a, 11a, which are portions protruding in the left-right direction with respect to the lower box portion 13.

The lower auxiliary shelf 12 illustrated in FIG. 3 is stored at the center of the lower shelf 11 in the left-right direction at the back side. The lower auxiliary shelf 12 has a lower height than the step between the lower shelf 11 and the middle shelf 21. The upper surface of the lower auxiliary shelf 12 forms a plane having the same height as the lower shelf 11 in a state where the upper auxiliary shelf 12 is stored in the lower shelf 11. The lower auxiliary shelf 12 can be fixed at a position where it is pulled out upward. There is no limitation on the method of fixing the lower auxiliary shelf 12 at the position where it is pulled out upward. For example, the lower auxiliary shelf 12 may be configured to be pulled out upward and rotated 180 degrees around an axis in the vertical direction, so that the lower auxiliary shelf 12 can be placed on the lower shelf 11 in a state where the lower auxiliary shelf 12 is pulled out on the lower shelf 11. Good. That is, in the housed state, the projection provided at the lower part of the lower auxiliary shelf 12 and the recess or hole provided in the lower shelf 11 are fitted to each other, so that the lower auxiliary shelf 12 is stored in the lower shelf 11. It has been shaped. By pulling out the lower auxiliary shelf 12 upward from this state and rotating it 180 degrees around the vertical axis, a convex portion provided at the lower portion of the lower auxiliary shelf 12 and a concave portion provided at the lower shelf 11 The position of the hole shifts and the fitting stops. As a result, the tip of the projection of the lower auxiliary shelf 12 directly abuts on the lower shelf 11, and the lower auxiliary shelf 12 is placed on the lower shelf 11 in a state of being pulled out onto the lower shelf 11. Such a configuration may be adopted. Similarly, when the lower auxiliary shelf 12 is pulled out from the lower shelf 11 and moved in the horizontal direction, a convex portion provided at the lower portion of the lower auxiliary shelf 12 and a concave portion or a hole provided on the lower shelf 11 are similarly provided. May be shifted. The lower auxiliary shelf 12 is pulled out upward and fixed, thereby providing a shelf at an intermediate height between the middle shelf 21 and the lower shelf 11. The lower drawer 10 is an example of the “Nth member” and the “rth member” of the present invention. The lower auxiliary shelf 12 is the “auxiliary step” of the present invention.
This is an example. In this embodiment, N = 3.

  The middle drawer section 20 provides a shelf at the height of the second tier from the bottom in the display platform display shelf 1. FIG. 7 is a diagram illustrating an example of the position of the middle drawer 20 in the display shelf 1 for dolls. The middle drawing part 20 is a part indicated by a solid line in FIG. That is, the middle drawer 20 is located between the lower drawer 10 and the frame 30 in a state where the middle drawer 20 is pulled out from the frame 30 and the lower drawer 10 is pulled out from the middle drawer 20. . It should be noted that a part of the middle drawer 20 actually penetrates into the inside of the frame 30, but the penetrating part is not shown in FIG. 7. The middle drawer 20 has a middle shelf 21, a middle box 23, and a lower drawer storage 24. The middle drawer 20 is an example of the “n-th member”, the “s-th member”, and the “r-th member” of the present invention.

  FIG. 8 is an example of a front view of the middle drawer 20 in the display stand 1 for dolls. FIG. 9 is an example of a right side view of the middle drawer section 20 in the display platform display shelf 1. FIG. 10 is an example of a left side view of the middle drawer 20 in the display stand 1 for dolls. Each of the middle front plate 23a illustrated in FIG. 8, the middle right side plate 23b illustrated in FIG. 9, and the middle left side plate 23c illustrated in FIG. 10 is a plate-shaped member. The middle box portion 23 is formed in a U-shape in a top view by a middle front plate 23a, a middle right side plate 23b, and a middle left side plate 23c. The middle box section 23 makes the internal structure of the display platform display shelf 1 invisible from the outside. The lower ends of the middle right side plate 23b and the middle left side plate 23c are connected to the lower side shelves 25, 25, respectively. The lower side shelves 25, 25 are hollow shelves, as described later, and can surround the lower shelf protruding portion 11a.

  The middle shelf 21 is a shelf provided at the height of the second tier from the bottom in the display platform display shelf 1. The middle shelf 21 is formed flat, and is provided horizontally on the middle box 23. The width of the middle shelf 21 is larger than the width of the middle box portion 23. That is, the middle shelf 21 has middle shelf protruding portions 21a, 21a which are portions protruding in the left-right direction with respect to the middle box portion 23.

  The middle auxiliary shelf 22 illustrated in FIG. 7 is stored at the center of the middle shelf 21 in the left-right direction at the back side. The middle auxiliary shelf 22 has a height lower than the step between the middle shelf 21 and the upper shelf 31. The upper surface of the middle auxiliary shelf 22 constitutes a plane having the same height as that of the middle shelf 21 when housed in the middle shelf 21. The middle auxiliary shelf 22 can be fixed at a position where it is pulled out upward. There is no limitation on the method of fixing the middle auxiliary shelf 22 at the position where it is pulled out upward. For example, the middle auxiliary shelf 22 may be pulled out in the upward direction and rotated 180 degrees around the vertical axis so that the middle auxiliary shelf 22 can be placed on the middle shelf 21 in a state where the middle auxiliary shelf 22 is pulled out on the middle shelf 21. Good. That is, in the stored state, the convex portion provided at the lower part of the middle auxiliary shelf 22 and the concave portion or the hole provided in the middle shelf 21 are fitted, so that the middle auxiliary shelf 22 is stored in the middle shelf 21. It has been shaped. By pulling out the middle auxiliary shelf 22 upward from this state and rotating it 180 degrees around the vertical axis, a convex portion provided at the lower portion of the middle auxiliary shelf 22 and a concave portion provided on the middle shelf 21 The position of the hole shifts and the fitting stops. As a result, the tip of the convex portion of the middle auxiliary shelf 22 directly abuts on the middle shelf 21, and the middle auxiliary shelf 22 is placed on the middle shelf 21 in a state of being pulled out onto the middle shelf 21. Such a configuration may be adopted. Similarly, by pulling out the middle auxiliary shelf 22 from the middle shelf 21 and moving it in the horizontal direction, a convex portion provided at the lower portion of the middle auxiliary shelf 22 and a concave portion or a hole provided at the middle shelf 21 are provided. May be shifted. The middle auxiliary shelf 22 is pulled out and fixed upward to provide a shelf at an intermediate height between the upper shelf 31 and the middle shelf 21.

The lower drawer storage unit 24 includes lower side shelves 25, 25 illustrated in FIGS. 7 to 9, a lower right side plate 24b illustrated in FIG. 9, and a lower left side plate 24c illustrated in FIG. The lower side shelves 25, 25 are hollow shelves provided to project from the left and right side surfaces of the middle drawer 20, respectively. The lower side shelves 25, 25 are provided at substantially the same height as the lower shelf 11 of the lower drawer 10. The lower side shelves 25, 25 are provided with lower shelf projecting portions 11a, 11a, which are portions projecting in the left-right direction with respect to the lower box portion 13 in the lower drawer 10, in directions different from the front-back direction, that is, in the up-down direction and the left-right direction. It is a shape that can be surrounded from.

  The lower right side plate 24b and the lower left side plate 24c are plate-shaped members provided on the left and right sides of the lower drawer storage unit 24. Lower bottom plates 27 illustrated in FIG. 8 are provided at lower ends of the lower right side plate 24b and the lower left side plate 24c. The lower bottom plates 27 are separated from each other. The upper ends of the lower right side plate 24b and the lower left side plate 24c are connected to the lower side shelves 25, 25, respectively. The interval between the lower right side plate 24b and the lower left side plate 24c is larger than the width of the lower box portion 13 of the lower drawer 10. The height of the lower right side plate 24b and the lower left side plate 24c is substantially the same as the height of the lower box portion 13 of the lower drawer 10. Therefore, the lower drawer storage section 24 can sandwich the lower box portion 13 of the lower drawer 10 from the left and right directions by the lower right side plate 24b and the lower left side plate 24c.

  Long plate-shaped caster fixing plates 26c, 26c attached to the lower bottom plates 27, 27 so as to extend in the front-rear direction are attached in such a manner that the normal lines extend in the left-right direction. The casters 26 are provided at the front and rear ends below the lower bottom plates 27, 27 via caster fixing plates 26c. The casters 26 include a caster 26 a provided in front of the middle drawer 20 and a caster 26 b provided behind the middle drawer 20. The casters 26a are provided inside the caster fixing plate 26c. The casters 26b are provided outside the caster fixing plate 26c.

  FIG. 11 is an example of a schematic front view showing a state in which the lower drawer 10 is stored in the lower drawer storage 24 of the middle drawer 20. As illustrated in FIG. 11, the lower drawer storage unit 24 surrounds the lower drawer unit 10 from a direction different from the front-rear direction by the lower side shelf 25, the lower right side plate 24 b, the lower left side plate 24 c, and the lower bottom plates 27, 27. Then, the lower drawer 10 is stored. In this state, the casters 26 a are in contact with the stoppers 15 a provided at the front end of the rail 15 on the rail 15.

  The frame unit 30 provides the uppermost shelf of the display shelf 1 for a doll. FIG. 12 is a diagram illustrating an example of the position of the frame section 30 in the display platform display shelf 1. The frame portion 30 is a portion indicated by a solid line in FIG. That is, the frame portion 30 is located at the rearmost surface of the display platform display shelf 1 in a state where the middle drawer portion 20 is pulled out from the frame portion 30 and the lower drawer portion 10 is pulled out from the middle drawer portion 20. The frame 30 includes a grip 38, an upper shelf 31, an upper box 35, a middle drawer storage 30 a, and a caster 50. The frame 30 is an example of the “first member” of the present invention.

  FIG. 13 is an example of a front view of the frame section 30 in the display platform display shelf 1. FIG. 14 is an example of a right side view of the frame portion 30 in the display platform display shelf 1. FIG. 15 is an example of a left side view of the frame portion 30 in the display platform display shelf 1. Each of the upper front plate 35a illustrated in FIG. 13, the upper right side plate 35b illustrated in FIG. 14, and the upper left side plate 35c illustrated in FIG. 15 is a plate-shaped member. The upper box portion 35 is formed in a U-shape in a top view by an upper front plate 35a, an upper right side plate 35b, and an upper left side plate 35c. The upper box portion 35 makes the internal structure of the display platform display shelf 1 invisible from the outside. Each of the upper right side plate 35b and the upper left side plate 35c is connected to each of the middle side shelves 33, 33. The middle side shelves 33, 33 are hollow shelves, and can surround middle shelf protrusions 21 a, 21 a, which are portions protruding left and right in the middle shelf 21 of the middle drawer 20.

The upper shelf 31 is the uppermost shelf of the display platform display shelf 1. The upper shelf 31 is formed flat, and is provided horizontally on the upper box portion 35. The width of the upper shelf 31 is larger than the width of the upper box portion 35. That is, the upper shelf 31 has upper shelf projecting portions 31a, 31a which are portions protruding in the left-right direction with respect to the upper box portion 35.

  The upper auxiliary shelf 32 illustrated in FIG. 12 is stored at the center of the upper shelf 31 in the left-right direction on the back side. The upper auxiliary shelf 32 has, for example, substantially the same height as the lower auxiliary shelf 12 or the middle auxiliary shelf 22. The upper surface of the upper auxiliary shelf 32 forms a plane having the same height as the upper shelf 31 in a state where the upper auxiliary shelf 32 is stored in the upper shelf 31. The upper auxiliary shelf 32 can be fixed at a position where it is pulled out upward. There is no limitation on the method of fixing the upper auxiliary shelf 32 at the position where it is pulled out upward. For example, the upper auxiliary shelf 32 may be configured to be pulled out upward and rotated by 180 degrees around a vertical axis, so that the upper auxiliary shelf 32 can be placed on the upper shelf 31 in a state where the upper auxiliary shelf 32 is pulled out. Good. That is, in the housed state, the upper auxiliary shelf 32 is stored in the upper shelf 31 by fitting the convex portion provided at the lower part of the upper auxiliary shelf 32 with the concave portion or the hole provided in the upper shelf 31. It has been shaped. By pulling out the upper auxiliary shelf 32 upward from this state and rotating the upper auxiliary shelf 32 around the vertical axis by 180 degrees, the convex portion provided at the lower portion of the upper auxiliary shelf 32 and the concave portion provided at the upper shelf 31 The position of the hole shifts and the fitting stops. As a result, the tip of the convex portion of the upper auxiliary shelf 32 directly abuts on the upper shelf 31, and the upper auxiliary shelf 32 is placed on the upper shelf 31 in a state of being pulled out onto the upper shelf 31. Such a configuration may be adopted. Similarly, when the upper auxiliary shelf 32 is pulled out of the upper shelf 31 and is moved in the horizontal direction, a convex portion provided at a lower portion of the upper auxiliary shelf 32 and a concave portion or a hole provided at the upper shelf 31 are provided. May be shifted. The upper auxiliary shelf 32 provides a shelf at a higher position than the upper shelf 31 by being pulled out and fixed upward.

  The grip portion 38 is a frame-shaped member provided on the back side of the upper shelf 31 and having a U-shape in a front view. The grip portion 38 is a portion that is gripped by the operator when the display platform display shelf 1 is moved. The upper surface 38a of the grip portion, which is the upper surface of the grip portion 38, is formed flat, and the height from the upper surface shelf 31 to the upper surface 38a of the grip portion is substantially the same as the height of the upper auxiliary shelf 32. Therefore, when the upper auxiliary shelf 32 is fixed in a state of being pulled out upward, the upper auxiliary shelf 32 and the upper surface 38a of the grip portion constitute a plane having the same height.

  The middle drawer storage unit 30a includes middle side shelves 33, 33, a middle frame part 36, lower side shelves 34, 34, and a lower frame part 37. The middle side shelves 33, 33 are hollow shelves provided to protrude from the left and right side surfaces of the frame portion 30. The middle side shelves 33, 33 are provided at substantially the same height as the middle shelf 21 of the middle drawer 20. The middle-stage side shelves 33, 33 extend the middle-shelf protrusions 21a, 21a, which are portions projecting in the middle drawer 20 in the left-right direction with respect to the middle box 23, from directions different from the front-back direction, that is, from the up-down direction and the left-right direction. It has a shape that can be enclosed.

  The middle frame portion 36 includes a middle right side plate 36b and a middle left side plate 36c. The middle right side plate 36b and the middle side plate 36c are plate-shaped members provided on the left and right of the middle frame portion 36. The upper ends of the middle right side plate 36b and the middle left side plate 36c are connected to the middle side shelves 33, 33, respectively. Further, the lower ends of the middle right side plate 36b and the middle left side plate 36c are connected to the lower side shelves 34, 34, respectively. The distance between the middle right side plate 36b and the middle left side plate 36c is larger than the width of the middle box portion 23 of the middle drawer 20. The height of the middle right side plate 36b and the middle left side plate 36c is substantially the same as the height of the middle box portion 23 of the middle drawer 20. For this reason, the middle frame portion 36 can sandwich the middle box portion 23 of the middle drawer 20 from the left and right directions by the middle right side plate 36b and the middle left side plate 36c.

The lower side shelves 34, 34 are hollow shelves provided to protrude from the left and right side surfaces of the frame 30. The lower side shelves 34, 34 are provided at substantially the same height as the lower side side shelves 25, 25 of the middle drawer 20. The lower side shelves 34, 34 surround the lower side shelves 25, 25, which are portions protruding leftward and rightward with respect to the lower box 24 in the middle drawer 20, in directions different from the front-back direction, that is, in the up-down direction and the left-right direction. It has a shape that can do things.

  The lower frame portion 37 includes a lower right side plate 37b and a lower left side plate 37c. The lower right side plate 37b and the lower left side plate 37c are plate-shaped members provided on the left and right sides of the lower frame portion 37. Lower bottom plates 37d, 37d are provided at lower ends of the lower right side plate 37b and the lower left side plate 37c. The lower bottom plates 37d are separated from each other. The upper ends of the lower right side plate 37b and the lower left side plate 37c are connected to the lower side shelves 34, 34, respectively. The interval between the lower right side plate 37b and the lower left side plate 37c is larger than the interval between the lower right side plate 24b and the lower left side plate 24c of the middle drawer 20. The heights of the lower right side plate 37b and the lower left side plate 37c are substantially the same as the heights of the lower right side plate 24b and the lower left side plate 24c of the middle drawer 20. Therefore, the lower right side plate 37b and the lower left side plate 37c of the lower frame portion 37 can sandwich the lower right side plate 24b and the lower left side plate 24c of the middle drawer 20 from the left and right directions.

  Rails 39, 39 are provided below the lower bottom plates 37d, 37d. The rails 39, 39 support the casters 26b of the middle-stage drawer 20 movably in the front-rear direction. Stoppers 39a, 39a are provided at the front and rear ends of the rails 39, 39 to cover the front and rear ends of the rails 39, 39. The stoppers 39a, 39a regulate the range of movement of the caster 26b of the middle drawer 20 in the front-rear direction. The casters 50 are provided at front and rear ends below the rails 39, 39. That is, the frame portion 30 is movably supported on the floor via the four casters 50.

  FIG. 16 is an example of a schematic front view showing a state in which the middle drawing part 20 is stored in the middle drawing storage part 30a of the upper drawing part 30. In addition, in FIG. 16, the lower drawing part 10 is housed in the middle drawing part 20. As illustrated in FIG. 16, the middle drawer storage unit 30a includes middle side shelves 33, 33, a middle right side plate 36b, a middle left side plate 36c, a lower side shelf 34, 34, a lower right side plate 37b, a lower left side plate 37c, The middle drawer 20 is accommodated by surrounding the middle drawer 20 in a direction different from the front-back direction by the lower bottom plates 37d, 37d, that is, in the vertical and horizontal directions. In this state, the caster 26b is in contact with the stopper 39a provided at the rear end of the rail 39 on the rail 39.

  FIG. 17 is a diagram showing an example of the arrangement of casters and rails in the display stand 1 for dolls. FIG. 17 is an example of a view in which the arrangement of the casters and the rails is viewed from above in the display platform display shelf 1. The casters 26 a of the middle drawer 20 are supported by the rails 15 of the lower drawer 10. The casters 26 b of the middle drawer 20 are supported by rails 39 of the frame 30. That is, the middle drawer 20 is supported by both the lower drawer 10 and the frame 30 via the casters 26 so as to be relatively movable.

  Further, the range of movement of the casters 26a on the rail 15 is restricted by the stopper 15a of the rail 15. Further, the movement range of the casters 26b on the rail 39 is restricted by the stopper 39a. As a result, the casters 26 are prevented from falling off the rails 15 and 39.

  FIG. 18 is a diagram illustrating an example of a state where the upper auxiliary shelf 32, the middle auxiliary shelf 22, and the lower auxiliary shelf 12 of the doll stand display shelf 1 are pulled out upward. The dollan display shelf 1 is configured such that the upper auxiliary shelf 32, the middle auxiliary shelf 22, and the lower auxiliary shelf 12 are pulled out and fixed, so that the upper shelf 31, the middle shelf 21 and the lower shelf 11 have intermediate heights and the upper shelf 31. A higher shelf can be provided.

  The display platform 1 is not limited to being used alone, and a plurality of display platforms 1 can be used side by side. FIG. 19 is a diagram illustrating an example of a state in which two display platform display shelves 1 are arranged back to back. When the two display shelves 1 are placed back to back, the upper shelf 31 and the upper shelf 31, the middle side shelf 33 and the middle side shelf 33, and the lower side shelf 34 and the lower side shelf 34 abut against each other. As a result, merchandise display is possible over 360 degrees around the doll stand display shelf 1.

  In the display platform display shelf 1 according to the first embodiment described above, the middle drawer 20 and the lower drawer 10 can be easily pulled out from the frame 30 and the middle drawer 20. For this reason, the ladder display shelf 1 can easily constitute a staircase display shelf used for the doll display.

  In the display stand 1, the lower drawer 10 can be stored in the middle drawer 20, and the middle drawer 20 can be stored in the frame 30. Therefore, the display stand 1 can be stored in a small space.

  In the display stand 1, the lower drawer 10 was completely stored in the middle drawer 20, and the middle drawer 20 was completely stored in the frame 30. That is, in the state illustrated in FIG. 2 in which the lower drawer 10 and the middle drawer 20 are stored, the width of the display platform display shelf 1 in the front-rear direction is equal to the width of the frame 30 in the front-rear direction. However, the display platform display shelf 1 is not limited to such a configuration. For example, the display stand 1 may be configured so that a part of the lower drawer 10 is stored in the middle drawer 20 and a part of the middle drawer 20 is stored in the frame 30. Even when such a configuration is adopted, the display stand 1 can be stored in a space-saving manner as compared with the case where the staircase display shelf is stored as it is.

  In the display platform 1, the middle drawer 20 was not directly supported from the floor, but was supported by the lower drawer 10 and the frame 30. As a result, the reference of the height of the middle drawing part 20 is the lower drawing part 10 and the frame part 30. For this reason, the relative height difference between the middle drawer 20, the lower drawer 10, and the frame 30 is kept substantially constant. As a result, variations in the clearance between the lower shelf 11 and the lower side shelves 25, 25 and variations in the clearance between the middle shelf 21 and the interrupted side shelves 33, 33 can be suppressed. It is possible to maintain a state suitable for relative movement between the lower drawer 10 and the frame 30. Further, the clearance between the lower shelf 11 and the lower side shelves 25, 25 and the clearance between the middle shelf 21 and the interrupted side shelves 33, 33 can be set to be small. This can be suppressed. In addition, since the middle-stage drawer 20 is not directly supported on the floor, the number of casters 50 supported on the floor can be reduced, and crowding and interference between the casters supported on the floor can be suppressed.

  The display platform 1 is supported movably on the floor via casters 50. Further, when moving the display stand 1, the operator can hold the grip 38. As a result, the display stand 1 can be easily moved on the floor.

  In the display stand 1, the lower drawer 10, the middle drawer 20, and the frame 30 are relatively movable. Therefore, the depth of the lower shelf 11, the middle shelf 21, and the upper shelf 31 can be adjusted by adjusting the relative movement amounts of the lower drawer 10, the middle drawer 20, and the frame 30. That is, the relative positions of the lower shelf 11, the middle shelf 21, and the upper shelf 31 can be adjusted on the display stand 1 for dolls. Further, the display stage display shelf 1 can be used, for example, with the lower drawer 10 pulled out from the middle drawer 20 and the middle drawer 20 stored in the frame 30. In addition, for example, it is also possible to use in a state where the middle drawer 20 is pulled out from the frame 30 and the lower drawer 10 is housed in the middle drawer 20.

The doll stand display shelf 1 includes the upper box section 35, the middle box section 23, and the lower box section 13,
The products displayed on the upper shelf 31, the middle shelf 21, the middle side shelf 33, the lower side shelf 25, and the lower shelf 11 can be suppressed from falling. In addition, the display stand 1 for the doll bed is provided with the upper box section 35, the middle box section 23, and the lower box section 13, so that the internal structure thereof can be made invisible from the outside. In the display stand 1, the decoration may be provided by attaching a poster or the like that introduces products displayed in the upper box section 35, the middle box section 23, and the lower box section 13.

  In the display shelf 1, the upper shelf 31, the middle shelf 21, and the lower shelf 11 are provided with an upper auxiliary shelf 32, a middle auxiliary shelf 22, and a lower auxiliary shelf 12, respectively. As a result, the display shelf 1 can provide a shelf at an intermediate height between the upper shelf 31, the middle shelf 21 and the lower shelf 11, and a shelf at a position higher than the upper shelf 31. It is also possible to omit the upper auxiliary shelf 32, the middle auxiliary shelf 22, and the lower auxiliary shelf 12 from the display stand 1 for dolls.

  The display platform 1 has a lower shelf protruding portion 11a, a middle shelf protruding portion 21a, and an upper shelf protruding portion 31a, and has lower side shelves 25, 25, lower side shelves 34, 34, and middle side shelves 33, 33. Thus, products could be displayed on the side. However, when the commodity display is not performed on the side surface, the lower shelf protruding portion 11a, the middle shelf protruding portion 21a and the upper shelf protruding portion 31a, the lower side shelf 25, 25, the lower side shelf 34, 34, and the middle side surface from the doll stand display shelf 1. The shelves 33, 33 can be omitted.

  The upper shelf 31, the middle shelf 21, and the lower shelf 11 of the doll stand display shelf 1 were provided horizontally. However, the upper shelf 31, the middle shelf 21, and the lower shelf 11 are not limited to being provided horizontally. For example, the upper shelf 31, the middle shelf 21, and the lower shelf 11 may be provided with an inclination toward the front. By providing the inclination toward the front, the products displayed on the back side of the upper shelf 31, the middle shelf 21, and the lower shelf 11 can be easily viewed from the front.

  In the display stand 1, the upper shelf 31, the middle shelf 21, and the lower shelf 11 are supported by the upper box portion 35, the middle box portion 23, and the lower box portion 13, respectively. However, the structure for supporting the upper shelf 31, the middle shelf 21, and the lower shelf 11 is not limited to a box-shaped member. The upper shelf 31, the middle shelf 21, and the lower shelf 11 can be supported by, for example, a bar-shaped member.

  The ladder display shelf 1 was movably supported on the floor via casters 50. However, the caster 50 can be omitted from the display platform display shelf 1 because of its configuration. Further, in the display platform 1, the casters 50 may be omitted from either the lower drawer 10 or the frame 30.

  The display stage 1 for the doll-shaped ladder had a three-stage configuration of an upper stage, a middle stage, and a lower stage. However, the display platform 1 is not limited to the three-stage configuration. The dollan display shelf 1 can also have a configuration of four or more tiers. At that time, the number of tiers of the display stand 1 may be an odd number such as five or seven. Then, for example, when the number of tiers of the display rack 1 is five, the lower drawer at the bottom, the third drawer, and the frame at the top can move directly to the floor via the casters 50. The second stage moves to the lower stage drawer and the third stage drawer, and the fourth stage drawer moves to the third stage drawer and the frame via casters. It can be supported as much as possible.

  In the first embodiment, the display platform display shelf 1 has been described as an example of the embodiment of the multi-stage structure according to the present invention. However, the multi-stage structure according to the present invention is not limited to the display platform display shelf 1. The multi-stage structure can be applied to various structures using a plurality of steps. For example, the multi-stage structure according to the present invention can be used for an auxiliary step or the like when getting on a stair, a scaffold, a step platform, a vehicle or the like. Further, since the multi-stage structure according to the present invention can be stored in a small space, it is also suitable for an evacuation staircase used for evacuation in an emergency.

  The embodiments and modifications disclosed above can be combined with each other.

DESCRIPTION OF SYMBOLS 1 ... Hinadan display shelf 10 ... Lower drawer part 11 ... Lower shelf 11a ... Lower shelf protrusion part 12 ... Lower auxiliary shelf 15 ... Rail 20 ... Middle drawer part 21 ... Middle shelf 21a Middle shelf protruding part 22 Middle auxiliary shelf 24 Lower drawer storage unit 26 Caster 30 Frame unit 30a Middle drawer storage unit 31 Upper stage Shelf 31a: Upper shelf projecting part 32: Upper auxiliary shelf 39: Rail 50: Caster

Claims (6)

A multi-stage structure capable of forming a step-like structure of N steps (N is an integer of 3 or more) in a predetermined direction,
A first member supported on the floor and constituting the highest first step in the step-like structure, and an N-th member supported on the floor and constituting the lowest N-th step in the step-like structure And are provided so as to be relatively movable in the predetermined direction and the opposite direction to each other,
An n-th member that constitutes an n-th (n is a predetermined integer of 1 <n <N) step portion, and is supported on the floor so as to be relatively movable in the predetermined direction and the opposite direction. An nth member supported by both the member and the (n + 1) th member so as to be relatively movable in the predetermined direction and the opposite direction with respect to both the (n−1) th member and the (n + 1) th member,
The n-th member is lower than the (n-1) -th step formed by the (n-1) -th member, and higher than the (n + 1) -th step formed by the (n + 1) -th member and lower than the (n-1) -th step. Constitute an nth step ,
Casters are provided at both ends of the bottom plate of the n-th member in the predetermined direction,
The caster provided at one end of the both ends is interposed between the n-th member and the n-1 member, and the caster provided at the other end of the both ends is the caster Interposed between the n-th member and the (n + 1) -th member,
The n-th member is supported by both the (n-1) -th member and the (n + 1) -th member via casters provided at both ends.
Multi-stage structure.   The multi-stage structure according to claim 1, wherein the first member and the N-th member are supported movably on a floor via casters. The s member (s is an integer, 2 ≦ s ≦ N) is at least one of a multi-stage according to claim 1 or 2, characterized in that it is capable of being accommodated in the first s-1 member Structure. A state in which all the s-th members (s is an integer and 2 ≦ s ≦ N) are stored in the s-th member,
A staircase state in which all of the s-th members (s is an integer and 2 ≦ s ≦ N) have escaped from being stored in the s-th member;
The multi-stage structure according to any one of claims 1 to 3 , wherein transition between the two stages is enabled. The multi-stage structure according to any one of claims 1 to 4 , wherein all of the first to N-th steps are provided horizontally with the floor. In at least one of the r-th member (r is an integer and 2 ≦ r ≦ N), the difference between the height of the r-th step portion and the height of the (r−1) -th step portion of the (r−1) -th member is determined. An auxiliary step having a low height and constituting an auxiliary step between the r-th step and the (r-1) -th step by being placed on the r-th step; The multi-stage structure according to any one of claims 1 to 5 , wherein a part is attached.