Assembled leg stand

Abstract

The present invention aims to develop an assembly-type leg stand 1 that is compact as a practical item, easy to store, and provides a sense of satisfaction during use while also offering a surprising design, while simultaneously opening up a way to effectively utilize desks and chairs in school facilities, which are currently discarded as unwanted items, by reprocessing wooden components. [Solution] The present invention provides an assembly-type leg stand 1 comprising two leg element plates 2 that are assembled to stand on their own, and a top plate 3 that is connected and supported by these plates. The combination of each leg element plate 2 is a lap joint, and the connection between the top plate 3 and the leg element plate 2 is characterized in that the leg element plate 2 with the open lap end facing the top plate 3 is fixed to the top plate 3.

Description

Technical Field

[0001] The present invention relates to prefabricated leg furniture that collectively refers to prefabricated chairs, tables, benches, etc.

Background Art

[0002] For example, when providing products that allow users to assemble and complete simple so-called round chairs, etc. at the user level, it is preferable that their constituent members can be easily assembled and that a compact storage state can be obtained when not in use, i.e., during storage or distribution. On the other hand, when adopting a simple assembly structure, although there is a tendency for the rigidity of chairs, etc. after assembly to be insufficient, evaluating the convenience of the simple assembly structure, users currently tolerate or reluctantly accept the fact that sufficient rigidity cannot be obtained. By the way, with the decline in Japan's population and the trend of depopulation in local areas, the consolidation and abolition of school facilities are underway, and there is a situation where chairs, desks, etc. used in classrooms are discarded as unnecessary items. In particular, almost no consideration is given to the reuse of the wooden members used in these, and they are mainly disposed of by incineration, etc. However, there is also much room to open up a way for effective utilization of these wooden members through reprocessing and to provide them as actual products in the market. For example, reprocessed products of school supplies can be expected to lead to purchasing behavior as something that evokes a sense of regional love along with memories of one's school days for those from the region. Of course, even if it is a reprocessed product with such a certain story, it will not lead to purchasing behavior unless it has a structure that provides compactness and ease of storage as a practical item, and further a sense of satisfaction when used while feeling a sense of surprise.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

[0004] This invention was made with consideration for such consumer psychology, and the technical challenge was to develop an assembly-type leg stand that can be easily assembled at the user level, can be stored compactly when not in use, and preferably reuses resources that would otherwise be discarded. Incidentally, the name "leg stand" in this invention is not necessarily common, but in the furniture industry, tables, chairs, etc., are conventionally referred to as "legged items," so the name "leg stand" was chosen to refer to chairs, tables, step stools, etc. [Means for solving the problem]

[0005] First, the assembly-type leg stand described in claim 1 comprises two leg element plates that are assembled to be self-supporting, and a top plate that is connected and supported by these plates, wherein the combination of each leg element plate is a lap joint, and the connection between the top plate and the leg element plate is characterized in that the leg element plate with the open lap end facing the top plate is fixed to the top plate.

[0006] Furthermore, the assembly-type leg stand described in claim 2 is characterized in that, in addition to the requirements described in claim 1, the fitting portion in the lap joint is a dovetail structure.

[0007] Furthermore, the assembly-type leg stand described in claim 3 is characterized in that, in addition to the requirements described in claim 1 or 2, the top plate and the leg element plate are fixed by providing an embedded nut on either the top plate or the leg element plate, and fastening a fixing bolt to this embedded nut to secure the top plate and the leg element plate.

[0008] Furthermore, the assembly-type leg stand described in claim 4 is characterized in that, in addition to the requirements described in claim 2 or 3, the assembly-type leg stand is a single-seat type chair, a bench type chair, a table, or a step stool. [Effects of the Invention]

[0009] First, according to the invention described in claim 1, the structure comprises two leg element plates that are assembled to stand on their own, and a top plate that is connected and supported by these two leg element plates. The arrangement of the leg element plates is a lap joint, and the connection between the top plate and the leg element plates is such that the leg element plate with the open lap end facing the top plate is fixed to the top plate. This allows for easy assembly and provides a compact storage state when not in use, i.e., during storage or distribution.

[0010] Furthermore, according to the invention described in claim 2, the fitting portion in the interlocking joint is a dovetail joint structure, which allows for easy and secure assembly.

[0011] Furthermore, according to the invention described in claim 3, the top plate and the leg element plate are fixed by providing an embedded nut on either the top plate or the leg element plate and fastening a fixing bolt to this embedded nut, thereby securing the top plate and the leg element plate together. This makes it possible to obtain a rigid leg base with minimal bolt fastening work.

[0012] Furthermore, the assembly-type leg stand described in claim 4 can take various forms, such as a single-seat chair, a bench-type chair, a table, a step stool, etc., thus opening up a wide range of possibilities for effective reuse as a reprocessed product. [Brief explanation of the drawing]

[0013] [Figure 1] The perspective view which shows the prefabricated pedestal as a single - seat type chair which concerns on this invention, and shows both the materials to be used and the disassembled state. [Figure 2] It is the above - mentioned disassembled perspective view. [Figure 3] It is an explanatory view which shows the details of the above - mentioned assembled form. [Figure 4] The perspective view which shows the prefabricated pedestal as a bench - type chair which concerns on this invention. [Figure 5] The perspective view which shows the prefabricated pedestal as a table which concerns on this invention. [Figure 6] The perspective view which shows the prefabricated pedestal as a footrest which concerns on this invention. [Figure 7] The perspective view which shows the prefabricated pedestal of the type in which the structure of the leg element plate 2 which concerns on this invention is different. [Figure 8] The perspective view which shows the prefabricated pedestal which constitutes a single - seat type chair with a stand according to the present invention. [Figure 9] The perspective view which shows the prefabricated pedestal as a stool - type chair with casters according to the present invention.

Mode for Carrying Out the Invention

[0014] The mode for carrying out the present invention includes, as one of them, what is described in the following examples, and also includes various forms which can be improved within the technical idea thereof.

Example

[0015] Hereinafter, the prefabricated pedestal 1 of the present invention (which may be abbreviated as pedestal 1) will be specifically described. The prefabricated pedestal 1 is roughly divided into a separate leg element plate 2, a top plate 3, and a fixing bolt 4. As an example of the assembled completed state of the prefabricated pedestal 1, there are various forms such as the pedestal 1 (FIG. 1) which constitutes a single - seat type chair 11, the pedestal 1 (FIG. 4) which constitutes a bench - type chair 12, the pedestal 1 (FIG. 5 or 7) which constitutes a table 13, the pedestal 1 (FIG. 6) which constitutes a footrest 15, and the like. These leg element boards 2 and tabletop 3 are made of wood-based material, which is obtained by reusing the top panels T of study desks D that would otherwise be discarded after being used in school facilities, as shown in Figure 1.

[0016] The following explanation of each component of the assembled leg stand 1 will be based on the single-seat type chair 11 shown in Figures 1 to 3. First, the leg element plate 2 is composed of two paired leg plates; one is a connecting leg element plate 21 that fixes the tabletop plate 3, and the other is a non-connecting leg element plate 22 that is not fixed to the tabletop plate 3. Both the connecting leg element plate 21 and the non-connecting leg element plate 22 have a tabletop receiving portion 20S and a ground contact portion 20B that are spread out laterally, and as a result, the upper and lower intermediate portions of them form a narrow portion 20C that is cut towards the center. Incidentally, when this shape is used, as shown in Figure 1, when cutting the leg element plate 2 and tabletop plate 3 from a flat raw material such as the tabletop plate T, a cutting space for the tabletop plate 3 can be secured in the center of the raw material, allowing for efficient use of the raw material.

[0017] Furthermore, the connecting leg element plate 21 and the non-connecting leg element plate 22 have a lap joint structure, with both having a lap joint portion 23 formed in the vertical central direction and a fitting guide groove 24 in its extension. In the connecting leg element plate 21, the notched portion 23 has its open end 23E on the side of the top plate support portion 20S, and the top plate support portion 20S has bolt holes 26 for inserting fixing bolts 4.

[0018] The connecting leg element plate 21 and the non-connecting leg element plate 22 are provided with a dovetail joint structure 25 at least in the lap joint 23, as shown in Figure 3. Specifically, as an example, a dovetail projection 25A is formed on the non-connecting leg element plate 22, and a dovetail groove 25B is formed on the connecting leg element plate 21 side. Of course, the dovetail joint structure 25 may be formed not only in the area of ​​the lap joint 23 but also throughout to the fitting guide groove 24.

[0019] Next, I will describe the top plate 3 and the means for securing it. This tabletop 3 is, as an example, a round seat for one person, and embedded nuts 31, called "oni-me" nuts, are provided at two locations on its underside along its diameter line. A fixing bolt 4 is used as the fixing member, and this bolt has a screw size that can be fastened with the aforementioned embedded nuts 31.

[0020] A basic and preferred embodiment of the assembly-type leg stand 1 according to the present invention is as described above and is assembled as follows. <Disassembled and stored state> In this configuration, the two leg element plates 2 and the top plate 3 are stacked on top of each other, and the fixing bolts 4 are included separately.

[0021] <Assembly of leg element plates> First, during assembly, the connecting leg element plate 21 and the non-connecting leg element plate 22 of the leg element plate 2 are joined using a lap joint. Specifically, the connecting leg element plate 21 is positioned with the open lap joint end 23E facing upwards, and the lap joint portion 23 of the non-connecting leg element plate 22 is inserted into it. At this time, for the lap joint fitting, a dovetail projection 25A is formed on one of the lap joint portions 23 of the connecting leg element plate 21 and the non-connecting leg element plate 22, and a dovetail groove 25B is formed on the other, so that the lap joint is assembled and a strong assembly is achieved by the dovetail joint structure 25. As a result, the two leg element plates 2 form a cross shape in plan view and become self-supporting.

[0022] <Assembly of the tabletop> Subsequently, the insertion bolt holes 26 provided in the top plate support portion 20S of the connecting leg element plate 21 and the embedded nuts 31 provided in the top plate 3 are aligned, and the fixing bolts 4 are inserted into the two insertion bolt holes 26 to fasten the fixing bolts 4 to the embedded nuts 31. Incidentally, the top plate support portion 20S of the connecting leg element plate 21 has an open lap end 23E with the top open, which tends to lack rigidity, but as a result it is joined by the top plate 3 and exhibits sufficient rigidity. At the same time, when fixing the top plate 3 and the leg element plate 2, the assembled leg stand 1 can be used by simply tightening two fixing bolts 4.

[0023] <Other examples> In addition to the embodiments described above, the assembled leg base 1 of the present invention can take various forms as shown in Figures 4 to 9. First, the embodiment shown in Figure 4 is an assembly-type leg base 1 that serves as a so-called double-seat bench-type chair 12. The configuration of the leg element plate 2 in this embodiment is the same as that described previously.

[0024] Furthermore, the embodiment shown in Figure 5 is an assembly-type leg base 1 that serves as a table 13, and a single-seat type chair 11 is shown alongside it to make it easier to recognize the height dimension of the table.

[0025] Furthermore, the embodiment shown in Figure 6 is an assembly-type leg stand 1 that constitutes a step stool 15 by combining an assembly-type leg stand 1 which is a single-seat type chair 11 and an assembly-type leg stand 1 which is a wide table type table 13. Of course, the lower step (top plate 3) and the leg element plate 2 that supports the upper step (top plate 3) are fixed with bolts or the like as appropriate.

[0026] Furthermore, the embodiment shown in Figure 7 is a leg base 1 for a bench-type chair 14 with a different configuration of leg element plates 2. The connecting leg element plate 21 takes the form already described, while the non-connecting leg element plate 22 has an elongated shape, with two notched portions 23 formed near both ends, with the lower part being a notched open end 23E.

[0027] Furthermore, the embodiment shown in Figure 8 is a leg stand 1 that provides a single-seat chair 16 with a stand function, by providing an intermediate substrate 51 of the substrate 5 in the middle of the leg element plate 2 in the vertical direction, and the intermediate substrate 51 and the upper leg element plate 2 are fixed together by bolts or the like, as in the other embodiments.

[0028] Furthermore, in the embodiment shown in Figure 9, a bottom base plate 52 is provided on the ground contact portion 20B side of the leg element plate 2 to provide a stand function, and casters 6 are provided on the bottom base plate 52. This results in a leg stand 1 that functions as a stool-type chair 17 with casters that is easy to move. [Explanation of symbols]

[0029] D Study Desk T Desk top panel 1. Assembled leg base 2-legged element plate 3 Top plate 4 Fixing bolts 5 circuit boards 6 casters 11 Single-seat type chairs 12 bench-type chairs 13 tables 14 bench-type chairs with different leg element configurations. 15 Step stool 16 Single-seat chair with stand function 17. Stool-type chair with casters 20C narrow part 20S Top panel support 20B Grounding part 21 Connecting leg element plate 22 Non-connected leg element plate 23. Laminated section 23E Pivot open end 24 Fitting guide groove 25 Dovetail joint structure 25A Dovetail protrusion 25B Dovetail groove 26 bolt holes for insertion 31 Embedded nuts 51 Intermediate circuit board (stand) 52. Bottom base plate (caster mounting plate)

Claims

1. An assembly-type leg stand comprising two leg element plates that are assembled to form a self-supporting structure, and a top plate that is connected and supported by these, The combination of each leg element plate is a lap joint, and the connection between the top plate and the leg element plate is characterized in that one of the two leg element plates, with the lap open end facing the top plate, is fixed to the top plate.

2. The assembly-type leg stand is characterized in that the fitting portion in the aforementioned lap joint is a dovetail structure.

3. The assembly-type leg stand according to claim 1 or 2, characterized in that the top plate and the leg element plate are fixed together by providing an embedded nut on either the top plate or the leg element plate and fastening a fixing bolt to the embedded nut.

4. The assembly-type leg stand according to claim 2 or 3, characterized in that the assembly-type leg stand is one of a single-seat type chair, a bench type chair, a table, or a step stool.

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