Folding rack

Abstract

To provide a folding rack which can be compactly stored.SOLUTION: The folding rack 1 includes a plurality of mutually parallel pillar members 2, and a plurality of arm members 3 each having one end attached to each of the pillar members 2 and the other end pivotally supported by a central shaft part 4. An open state in which the arm members 3 are radially arranged around the central shaft portion 4, and a closed state in which the arm members 3 rotate around the central shaft portion 4 with respect to the open state and the arm members 3 are parallel to each other, and in the open state, a virtual plane passing through upper surfaces of the plurality of arm members 3 forms a placement surface S on which an article can be placed.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a folding rack. [Background technology]

[0002] Conventionally, folding storage racks have been developed that can be folded when not in use to facilitate storage and transportation, and also allow the shelf configuration to be easily changed to suit the desired space and situation (see Patent Document 1). Furthermore, the number of people who enjoy camping has been increasing in recent years. For camping and other activities, minimal equipment is required. Therefore, more compact, small-sized racks and the like have been developed (see Non-Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-010686 [Non-patent literature]

[0004] [Non-Patent Document 1] FIELD SEVEN, "NATURE TONES Little Break Stand MINI Satin Black", [online], [searched May 2, 2024], Internet,<URL:https: / / store.fieldseven.jp / products / 4589912796417> Summary of the Invention [Problem to be solved by the invention]

[0005] An object of the present invention is to provide a folding rack that can be stored more compactly. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, the present invention provides a folding rack comprising a plurality of parallel pillar members and a plurality of arm members, one end of which is attached to each of the pillar members and the other end of which is journalled on a central shaft, wherein when the arm members are approximately perpendicular to the pillar members, the rack can be placed in an open state in which the arm members are arranged radially around the central shaft, and in a closed state in which the arm members rotate around the central shaft relative to the open state and the arm members are parallel to each other, and in the open state, an imaginary plane passing through the upper surfaces of the plurality of arm members forms a loading surface on which items can be placed.

[0007] A plurality of sets of arm members may be provided to constitute one of the support surfaces.

[0008] Each of the arm members may be a long, thin plate-like member that is attached to the pillar member so that its width direction is parallel to the pillar member in the open state, and has a mounting portion whose upper surface extending in the plate thickness direction forms the mounting surface; and an axial connecting portion that is a plate-like member that is connected to the mounting portion so that its plate thickness direction is approximately perpendicular to the plate thickness direction of the mounting portion, and is axially supported on the central shaft portion so that the mounting portions of the multiple arm members are parallel to each other in the closed state.

[0009] The arm members may include a central arm member in which the axial hole through which the central shaft portion of the axial connecting portion passes is located on a straight line extending from the mounting portion, and an offset arm member in which the axial hole through which the central shaft portion of the axial connecting portion passes is located at a position offset from the straight line extending from the mounting portion.

[0010] The pillar member may have a groove extending in the longitudinal direction, and one end of the pillar member may be inserted into the groove and rotatably held by a holding shaft that passes through the groove, and in the open and closed states, the arm members may be perpendicular to the pillar member, and in the closed state, the arm members may be rotated around the holding shaft to enter a storage state in which they are stored in the groove.

[0011] A rotation restricting member may be provided to keep the angle between the arm members constant in the open state. [Effects of the Invention]

[0012] According to the present invention, a foldable rack that can be stored compactly can be provided. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 is a perspective view of the folding rack 1 in an open state in which the arm members 3 are positioned radially around the central shaft portion 4. [Figure 2] FIG. 1 is a top view of the folding rack 1 in an open state in which the arm members 3 are positioned radially around the central shaft portion 4. [Figure 3] FIG. 1 is a top view of the folding rack 1 in a closed state in which the arm members 3 have rotated about the central shaft 4 relative to the open state and are parallel to each other. [Figure 4] This is a cross section taken along the arrow direction shown in FIG. [Figure 5] 1 is a perspective view of the folding rack 1, showing an upper arm member set 30A in exploded form. [Figure 6] FIG. 2 is a perspective view of the folding rack 1 in a closed state. [Figure 7] 7 is a diagram showing the folding rack 1 in a stored state in which the arm member set 30 has rotated about the holding shaft 23 from the state shown in FIG. 6. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0014] A folding rack 1 according to an embodiment of the present invention will now be described. The folding rack 1 comprises a plurality of parallel pillar members 2 and arm members 3. Fig. 1 is a perspective view of the folding rack 1 in an open state in which the arm members 3 are positioned radially around a central shaft 4. Fig. 2 is a top view of the folding rack 1 in an open state in which the arm members 3 are positioned radially around the central shaft 4. Fig. 3 is a top view of the folding rack 1 in a closed state in which the arm members 3 have rotated around the central shaft 4 relative to the open state and are now parallel to each other.

[0015] In this embodiment, the system comprises three pillar members 2, an upper arm member set 30A, and a lower arm member set 30B. The upper arm member set 30A and the lower arm member set 30B each include three arm members 3. The upper arm member set 30A is attached to the upper end of the pillar member 2, and the lower arm member set 30B is attached to the center of the pillar member 2. However, the present invention is not limited to this, and the number of pillar members 2 and the number of arm members may be three or more, and the number of arm member sets 30 may be two or more.

[0016] When the folding rack 1 is in the open state shown in Figure 1, items such as plates and pots can be placed on two loading surfaces S: an upper loading surface SA formed by the upper arm member set 30A and shown by the dotted line in the figure, and a lower loading surface SB formed by the lower arm member set 30B and shown by the dotted line in the figure.

[0017] In the following description, the upper mounting surface SA side of the folding rack 1 will be referred to as the top, and the side where the lower mounting surface SB side relative to the upper mounting surface SA is located will be referred to as the bottom. Furthermore, since the upper arm member set 30A and the lower arm member set 30B have almost the same structure, they will be collectively referred to as arm member set 30 below unless it is necessary to distinguish between them, and the upper mounting surface SA and the lower mounting surface SB will be collectively referred to as mounting surface S below unless it is necessary to distinguish between them.

[0018] (Column member 2) The folding rack 1 of this embodiment includes three pole members 2. The three pole members 2 are the same shape and size. Each pole member 2 is a long, slender member that extends in the length direction and has two wide side surfaces 2a that face each other and two narrow side surfaces 2b that face each other. One of the narrow side surfaces 2b has a groove 21 that extends in the length direction.

[0019] Figure 4 is a cross-section of one pillar member 2 on the left side of Figure 1, taken in the direction of the arrow. As shown in Figure 4, a vertical hole 24 is provided on the other side of the narrow side surface 2b of the pillar member 2. Two vertical holes 24 are provided in one pillar member 2, one corresponding to upper arm member set 30A and one corresponding to lower arm member set 30B. Figure 4 only shows the vertical hole 24 corresponding to upper arm member set 30A.

[0020] (Arm member 3) The arm member 3 comprises a mounting surface forming portion 31 located on one end side (the pillar member 2 side) and a shaft connecting portion 32 located on the central shaft portion 4. The mounting surface forming portion 31 and the shaft connecting portion 32 are joined by welding or the like. The mounting surface forming portions 31 of the arm members 3 included in the upper arm member set 30A are each attached to the upper end of the pillar member 2, and the shaft connecting portions 32 are pivotally supported by the central shaft portion 4A. The mounting surface forming portions 31 of the arm members 3 included in the lower arm member set 30B are each attached to the center of the pillar member 2, and the shaft connecting portions 32 are pivotally supported by the central shaft portion 4B.

[0021] (Placement surface forming part 31) The placement surface forming portion 31 is a long, thin plate member, and is attached to the pillar member 2 so that the plate thickness direction t is horizontal and the width direction W is vertical, as shown on the right side of Fig. 1. The dimension of the placement surface forming portion 31 in the width direction W is larger than the dimension in the plate thickness direction t, so that the placement surface forming portion 31 is less likely to bend even when an article is placed on the placement surface S and a force is applied from above to below the placement surface forming portion 31.

[0022] As shown in Fig. 4, the upper edge 3a (top surface with a width equivalent to the plate thickness) of the placement surface forming portion 31 is provided with anti-slip recesses 35 extending at regular intervals in the plate thickness direction t. In the open state shown in Figs. 1 and 2, when an article is placed on the placement surface S formed by the upper edge 3a of the arm member 3, the provision of the anti-slip recesses 35 prevents the article from slipping.

[0023] 4, one end side of the mounting surface forming portion 31 is inserted into the groove portion 21 of the pillar member 2. The portion of the mounting surface forming portion 31 inserted into the groove portion 21 is rotatably attached to the pillar member 2 by a holding shaft 23.

[0024] A convex portion 36 extending in the width direction W is formed on the upper side of the end of the placing surface forming portion 31. When the placing surface forming portion 31 is at a substantially right angle to the pillar member 2 as shown in FIG. 4, the convex portion 36 is inserted into the vertical hole 24 of the pillar member 2. At this time, a corner portion 37 at the lower end of the convex portion 36 abuts against the inner surface of the lower side of the vertical hole 24 of the pillar member 2. This abutment prevents the placing surface forming portion 31 (arm member 3) from rotating counterclockwise around the holding shaft 23, which is the opposite direction to the direction indicated by the arrow in the figure.

[0025] On the other hand, as shown by the two-dot chain line in Figure 4, when the placing surface forming portion 31 (arm member 3) rotates clockwise as indicated by the arrow in the figure around the holding shaft 23, the corner 37 at the lower end of the convex portion 36 moves away from the lower inner surface of the vertical hole 24 of the pillar member 2 and does not hinder the rotation. In addition, because the lower corner 38 at the end of the placing surface forming portion 31 is chamfered, this corner 38 does not come into contact with the inner surface of the narrow side surface 2b of the pillar member 2 and hinder the rotation. In other words, the placing surface forming portion 31 (arm member 3) can rotate clockwise as indicated by the arrow in the figure around the holding shaft 23.

[0026] (Shaft connection part 32) 5 is a perspective view of the folding rack 1, showing an exploded view of the upper arm member set 30A. The shaft connecting portions 32 of the three arm members 3 included in one arm member 3 set are all made of thin plate members, and are joined to the mounting surface forming portion 31 so that the plate thickness direction is in the vertical direction (horizontal direction) that is approximately perpendicular to the plate thickness direction of the mounting surface forming portion 31. A shaft hole 33 is provided at the tip of the shaft connecting portion 32, and the central shaft portion 4 is inserted into this shaft hole 33.

[0027] However, the outer shapes of the shaft connecting portions 32 of the three arm members 3 are different from one another. The shaft connecting portion 32M of the central arm member 3M located in the center in the closed state shown in Fig. 3 is Q-shaped as shown in Fig. 5, and the shaft hole 33 is provided on a straight line extending from the mounting surface forming portion 31. In addition, a rotation restricting portion 34 is provided at the tip of the shaft connecting portion 32M, extending on a straight line passing through the mounting surface forming portion 31 and the shaft hole 33 and protruding.

[0028] In the closed state shown in Fig. 3, the right arm member 3R located on the right side of the central arm member 3M and the left arm member 3L located on the left side of the central arm member 3M are L-shaped and oriented in different directions. The shaft hole 33 of the shaft connecting portion 32R of the right arm member 3R is located at a position (offset position) offset from the straight line extending from the placing surface forming portion 31 of the right arm member 3R. The shaft hole 33 of the shaft connecting portion 32L of the left arm member 3L is also located at a position (offset position) offset from the straight line extending from the placing surface forming portion 31 of the left arm member 3L. Here, the amount of deviation (offset amount) dr of the shaft hole 33 of the right arm member 3R is equal to the amount of deviation (offset amount) dl of the shaft hole 33 of the left arm member 3L.

[0029] However, the shaft connecting portions 32R and 32L have a parallel portion 32a joined to the side surface of the mounting surface forming portion 31 so as to be parallel to the mounting surface forming portion 31, and an orthogonal portion 32b extending from the tip of the parallel portion 32a toward the central shaft portion 4 in a direction perpendicular to the parallel portion 32a. As shown in FIG. 3, the parallel portion 32a is joined to the right side of the mounting surface forming portion 31 in the drawing.

[0030] In shaft connecting portion 32R, shaft hole 33 is located on the left side of parallel portion 32a in the figure, and in shaft connecting portion 32L, shaft hole 33 is located on the right side of parallel portion 32a in the figure. Therefore, the length of orthogonal portion 32b extending to the left of shaft connecting portion 32R is longer than the length of orthogonal portion 32b extending to the right of shaft connecting portion 32L by the width of shaft connecting portion 32.

[0031] Thus, in this embodiment, the placing surface forming portion 31 of the central arm member 3M extends on a straight line extending radially from the central shaft portion 4, which is the center of rotation. The placing surface forming portions 31 of the right arm member 3R and the left arm member 3L are parallel to the straight line extending radially from the central shaft portion 4, which is the center of rotation, but extend at offset positions from that straight line.

[0032] The three arm members 3 are arranged in the following order from bottom to top: central arm member 3M, left arm member 3L, and right arm member 3R. A protrusion 39L that protrudes upward (toward the right arm member 3R) is provided in approximately the center of the upper surface (the surface facing the right arm member 3R) of the parallel portion 32a of the left arm member 3L. A recess 39R is provided on the lower surface (the surface facing the left arm member 3L) of the corner between the parallel portion 32a and the orthogonal portion 32b of the right arm member 3R.

[0033] (closed state) Therefore, in the closed state shown in FIG. 3, the placing surface forming portion 31 of the central arm member 3M, the placing surface forming portion 31 of the right arm member 3R, and the placing surface forming portion 31 of the left arm member 3L can be parallel to one another.

[0034] At this time, the distance between the support surface forming portion 31 of the central arm member 3M and the support surface forming portion 31 of the right arm member 3R is the offset amount dr, and the distance between the support surface forming portion 31 of the central arm member 3M and the support surface forming portion 31 of the left arm member 3L is the offset amount dl, which is equal to dr.

[0035] The width of the parallel portion 32a is slightly smaller than the offset amount. The width of the pillar member 2 is also slightly smaller than the offset amount. Therefore, when in the closed state, the parallel portion 32a does not come into contact with the adjacent mounting surface forming portion 31, and the pillar member 2 does not come into contact with the adjacent pillar member 2, so the mounting surface forming portions 31 are not prevented from becoming parallel.

[0036] (Stored state) Fig. 6 is a perspective view of the folding rack 1 in a closed state. As shown in Fig. 4 above, when the mounting surface forming portion 31 (arm member 3) rotates clockwise as indicated by the arrow in Fig. 4 around the holding shaft 23, the corner 37 at the lower end of the protrusion 36 moves away from the lower inner surface of the vertical hole 24 of the pillar member 2 and does not hinder the rotation. In addition, the lower corner 38 at the end of the mounting surface forming portion 31 is chamfered, so that this corner 38 does not come into contact with the inner surface of the narrow side surface 2b of the pillar member 2 and hinder the rotation.

[0037] Therefore, in the closed state, the upper arm member set 30A and the lower arm member set 30B can rotate together in a direction approaching the pillar member 2. Figure 7 shows the storage state after rotation. In the storage state, the mounting surface forming portions 31 of the upper arm member set 30A and the lower arm member set 30B are each stored inside the groove portions 21 of the pillar member 2. Therefore, in this storage state, the folding rack 1 has a compact size, making it easy to carry.

[0038] (Opening operation) Conversely, from the closed state shown in Figure 7, upper arm member set 30A and lower arm member set 30B are rotated together around retaining shaft 23 in a direction away from pillar member 2, and arm member set 30 moves so as to be perpendicular to pillar member 2 as shown in Figure 6. Then, as shown in Figure 3, right arm member 3R located on the right side and left arm member 3L located on the left side of central arm member 3M are moved in the direction of the arrows in a direction away from central arm member 3M to reach the open state shown in Figure 2.

[0039] (open state) As described above, the tip of the shaft connecting portion 32M of the central arm member 3M is provided with a rotation restricting portion 34 that protrudes and extends on a straight line that passes through the mounting surface forming portion 31 and the shaft hole 33. When the right arm member 3R and the left arm member 3L rotate from the closed state of Fig. 3 to the open state of Fig. 2, the tip of the mounting surface forming portion 31 of the right arm member 3R and the tip of the mounting surface forming portion 31 of the left arm member 3L come into contact with the rotation restricting portion 34 when the angle between the mounting surface forming portion 31 of the central arm member 3M and the mounting surface forming portion 31 of the right arm member 3R, and the angle between the mounting surface forming portion 31 of the central arm member 3M and the mounting surface forming portion 31 of the left arm member 3L, both reach 120 degrees.

[0040] Then, the protrusion 39L on the left arm member 3L fits into the recess 39R on the right arm member 3R, thereby keeping the angle between the central arm member 3M, the left arm member 3L, and the right arm member 3R constant.

[0041] As a result, the central arm member 3M, the right arm member 3R, and the left arm member 3L are arranged radially at equal intervals, and the pillar members 2 attached to one end of the arm members 3 are arranged at three equal intervals on a circumference centered on the central shaft portion 4.

[0042] As described above, the folding rack 1 of the embodiment can be easily unfolded from the stored state to the open state.

[0043] Furthermore, since the folding rack 1 is provided with three pillar members 2 when in the open state, the folding rack 1 can be placed on the floor or the ground without rattle.

[0044] As described above, the placement surface forming portion 31 (arm member 3) can rotate clockwise around the holding shaft 23, as indicated by the arrow in FIG. 4 . However, in the open state shown in FIG. 2 , the three arm members 3 are connected to each other via the central shaft 4, and therefore cannot rotate in a downward direction around the holding shaft 23 relative to the column member 2. Furthermore, since the dimension in the width direction W of the placement surface forming portion 31 is larger than the dimension in the thickness direction t of the thin plate, the placement surface forming portion 31 is less likely to bend even when an item is placed on the placement surface S and a force is applied from above to the placement surface forming portion 31. Therefore, even when an item is placed on the placement surface S formed by the placement surface forming portions 31 of the three arm members 3 and a force is applied from above to below, the placement surface forming portion 31 (arm member 3) can stably hold the item.

[0045] The folding rack 1 of the embodiment also includes an upper arm member set 30A, each including three arm members 3, and an upper arm member set 30A and a lower arm member set 30B. Therefore, an upper mounting surface SA is formed by the mounting surface forming portions 31 of the arm members 3 of the upper arm member set 30A, and a lower mounting surface SB is formed by the mounting surface forming portions 31 of the arm members 3 of the lower arm member set 30B, i.e., two mounting surfaces S are formed. This allows for multiple levels and allows for the storage of a large number of items.

[0046] For example, when camping with minimal equipment, a compact table alone can often provide insufficient storage space, and the folding rack 1 of the embodiment is useful in such cases to ensure storage space.

[0047] The foldable rack 1 has a compact shape, so it can be installed in a minimum space, can be used on a table, and can be installed anywhere.

[0048] In addition, the storage size is compact, so it does not increase the amount of luggage you need to carry when camping. The folding rack 1 can be made lighter because the mounting surface S is formed only by the framework, which does not include a top plate or the like.

[0049] Furthermore, the folding rack 1 is an integrated unit in which all components are connected, making it easy to assemble without the components coming apart. This means that you can quickly unfold it and start camping without stress.

[0050] Although the preferred embodiment of the present invention has been described above, the present invention is not limited to this and various modifications are possible. [Explanation of symbols]

[0051] S Placement surface SA upper loading surface SB Lower loading surface 1 folding rack 2 Pillar members 21 Groove 23 Holding axis 24 Vertical Hole 3 Arm members 3L Left arm member (offset arm member) 3M central arm member 3R Right arm member (offset arm member) 4 Central shaft section 30 Arm parts set 30A Upper arm member set 30B Lower Arm Parts Set 31 Placement surface forming part 32 Shaft connection part 33 Shaft hole 34 Rotation restriction part

Claims

1. A plurality of column members parallel to each other; a plurality of arm members, one end of which is attached to each of the pillar members and the other end of which is pivotally supported on a central shaft portion; In a state in which the arm member is substantially perpendicular to the pillar member, an open state in which the arm members are arranged radially around the central shaft portion; The arm members can rotate about the central shaft portion relative to the open state to form a closed state in which the arm members are parallel to each other, In the open state, an imaginary plane passing through the upper surfaces of the plurality of arm members forms a placement surface on which an article can be placed. Folding rack.

2. A plurality of sets of arm members each constituting one of the above-mentioned placement surfaces are provided. The folding rack according to claim 1 .

3. The arm members each include: a mounting portion that is an elongated plate-like member attached to the pillar member such that its width direction is parallel to the pillar member in the open state, and whose upper surface extending in a plate thickness direction constitutes the mounting surface; a plate-like member connected to the mounting portion such that a thickness direction of the plate is substantially perpendicular to a thickness direction of the mounting portion, and a shaft connecting portion supported on the central shaft portion such that the mounting portions of the plurality of arm members are parallel to each other in the closed state; The folding rack according to claim 1 .

4. The arm member is a central arm member, the central arm member having a shaft hole in the shaft connecting portion through which the central shaft portion passes, the shaft hole being provided on a straight line extending from the mounting portion; an offset arm member, wherein an axial hole in the axial connection portion through which the central axial portion passes is provided at a position offset from a straight line extending from the mounting portion; The folding rack according to claim 3.

5. The pillar member has a groove formed therein extending in the longitudinal direction, the one end of the pillar member is inserted into the groove and rotatably held by a holding shaft that penetrates the groove, In the open state and the closed state, the arm members are perpendicular to the pillar members, In the closed state, the arm member is rotated around the holding shaft to enter a storage state in which the arm member is stored in the groove portion. The folding rack according to claim 1 .

6. a rotation restriction member that keeps the angle between the arm members constant in the open state; The folding rack according to claim 1 .

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