Desk top board and desk

Abstract

To provide a desk top and desk that can reduce manufacturing and maintenance burdens.SOLUTION: A desk 100 includes a desk top board 120 connected to leg bodies 110. The desk top board 120 is formed in a plate shape and includes top board-side mounting parts 122a to 122f and 125. The top board-side mounting parts 122a to 122f are formed of penetrator fitting parts 123 that are densely packed together, the penetrator fitting parts whose rod body tips are sharpened in a needle-like shape and into which mounting penetrators 119 penetrating leg body-side mounting parts 115a to 115d and 115f to 115i of the leg bodies 110 are fitted. Each penetrator fitting part 123 is formed of a first fitting portion 123a and a second fitting portion 123b. The first fitting portion 123a is formed in a groove shape narrower than an outer shape of the mounting penetrator 119. The second fitting portion 123b is formed at an innermost portion of the first fitting portion 123a and is formed solid so that the tip of the mounting penetrator 119 is inserted therein.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a desk that is particularly suitable for use as a study desk for children or students in educational facilities such as schools. [Background technology]

[0002] Conventionally, there are desks with a plate-shaped top plate provided on the upper part of legs that stand up from the floor surface. For example, the following Patent Document 1 discloses an assembly desk in which a synthetic resin top plate to which a storage container is detachably attached is supported by detachable legs. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 62-150930

[0004] However, in the desk described in Patent Document 1, because the storage compartments and detachable legs are attached to anchor nuts embedded in the underside of the tabletop, only specific storage compartments and detachable legs can be attached to the tabletop, which poses a problem of a large manufacturing or maintenance burden for the desk.In other words, in the desk described in Patent Document 1, a tabletop must be prepared for each of the multiple types of storage compartments or detachable legs, which poses a problem of a large manufacturing burden for the tabletops or a maintenance burden such as replacing the tabletops.

[0005] The present invention has been made to address the above-mentioned problems, and has an object to provide a desk top and a desk that can reduce the manufacturing and maintenance burdens.

[0006] In order to achieve the above-mentioned object, the present invention is characterized in that it is a desk top which has a leg-side mounting part and is attached to a leg which stands above a floor surface via the leg-side mounting part and the top-side mounting part, the top-side mounting part having a penetrating body fitting part into which a mounting penetrator which has a rod-like tip formed into a needle-like sharpness and which passes through the leg-side mounting part fits, the penetrating body fitting part having a first fitting part formed in the shape of a hole or groove which is narrower than the outer shape of the mounting penetrator, and a solid second fitting part formed at the innermost part of the first fitting part and into which the tip of the mounting penetrator is inserted, with a plurality of penetrating body fitting parts being formed closely spaced together.

[0007] According to the features of the present invention configured as described above, the desk top has a densely formed penetrating body fitting portion into which the mounting penetrating body penetrating the leg body side mounting portion is fitted, and the range of mounting positions for the leg body side mounting portion is expanded, thereby reducing the manufacturing and maintenance burdens. Specifically, the desk top according to the present invention allows multiple types of legs to be selectively attached to one tabletop, and also reduces the burden of forming the tabletop side mounting portion in a precise position on the desk top. This also means that multiple types of desk tops with different specifications such as shapes or materials can be selectively attached to the legs. In addition, the desk top according to the present invention also allows the mounting position of the desk top to be changed relative to the legs. Therefore, the desk top according to the present invention allows a repaired desk top or a desk top used on another desk to be mounted to the legs using a penetrating body fitting portion different from the previous one (i.e., by shifting the mounting position).

[0008] Another feature of the present invention is that, in the desk top, the first fitting portion is formed in a meandering groove shape.

[0009] According to this, the desk top has a first fitting portion in the penetrator fitting portion formed in a meandering groove shape, so that the attachment position changes continuously in two mutually perpendicular directions, allowing for a large degree of freedom in the attachment position, and the groove shape makes it easy to mold. In this case, the meandering can be regular or irregular.

[0010] Another feature of the present invention is that in the desk top plate, the first fitting portion is formed in a hole shape having a hexagonal cross section.

[0011] According to this, since the cross section of the first fitting portion of the desk top is formed in a hexagonal hole shape, it is possible to ensure the rigidity of the penetrator fitting portion while ensuring a free attachment position.

[0012] Another feature of the present invention is that, in the desk top, the first fitting portion is formed so that its length in the depth direction is longer than that of the second fitting portion.

[0013] According to this, the first fitting part of the desk top is formed with a greater depth than the second fitting part, so that the fitting force can be obtained while suppressing the force required for screwing. Also, even if the desk top is slightly misaligned with respect to the leg side mounting part, the first fitting part can flexibly deform relative to the mounting penetrator to obtain the fitting force.

[0014] Another feature of the present invention is that the desk top comprises a mounting base having a mounting portion on the top side and attached to the legs, and a top body that forms the upper surface of the desk top and is attached to the mounting base.

[0015] According to this, the desk top is composed of a mounting base which has an attachment portion on the top side and is attached to the legs, and a top body which forms the upper surface of the desk top and is attached to the mounting base, so that if the top body is damaged or if the design of the top body needs to be changed, the top body can be easily replaced.

[0016] Another feature of the present invention is that in the desk top, the penetrating body fitting portion is integrally formed on the underside of the desk top.

[0017] According to this, since the penetrating body fitting portion is integrally molded on the underside of the desk top, the workload of attaching the desk top to the legs can be reduced, and the number of parts of the desk top can be reduced, thereby reducing the manufacturing and management burdens. Furthermore, with the desk top according to the present invention, the design burden for reliably attaching the penetrating body fitting portion to the desk top can be reduced, improving the reliability of the desk top.

[0018] Another feature of the present invention is that, in the desk top, the penetrating body fitting portion is formed on the peripheral portion of the underside of the desk top other than the portion facing the user of the desk top.

[0019] According to this, the desk top has a penetrating body fitting portion formed on the peripheral portion of the underside of the desk top other than the portion facing the user of the desk top, so that the space on the underside of the desk top facing the user can be effectively utilized as an opening to a storage space, etc.

[0020] Another feature of the present invention is that, in the desk top, the first fitting portion of the penetrator fitting portion is formed to be smaller on the innermost side than on the opening side.

[0021] According to this, the desk top is formed so that the size of the hole or groove is smaller at the innermost side of the penetrating body fitting portion than at the opening side of the first fitting portion, making it easier to insert the mounting penetrating body into the first fitting portion while increasing the radial amount of fitting at the innermost part of the first fitting portion, thereby improving the fitting force.

[0022] Furthermore, the present invention can be embodied not only as an invention of a desk top plate, but also as an invention of a desk equipped with this desk top plate.

[0023] Specifically, the desk may include legs having a leg-side attachment part that stands up from the floor surface, and a desk top having a top-side attachment part for attaching to the legs, as described in any one of claims 1 to 8. In this way, the desk can be expected to have the same effects as the desk top.

[0024] In this case, in the desk, it is preferable that the tip of the rod is formed into a needle-like sharpness, passes through the leg side attachment part, and has a male thread formed on the outer periphery of the attachment penetrator that fits into the penetrator fitting part of the tabletop side attachment part. This improves the joining strength between the tabletop and the legs. [Brief description of the drawings]

[0025] [Figure 1] 1 is a perspective view showing an outline of the external configuration of a desk equipped with a desk top plate according to an embodiment of the present invention; [Diagram 2] FIG. 2 is an exploded perspective view showing main components constituting the desk shown in FIG. [Diagram 3] 3 is an exploded perspective view showing a state in which a storage section is placed on a leg of the desk shown in FIG. 2. FIG. [Figure 4] 3 is an exploded perspective view showing an attachment base and a top plate body that constitute the top plate shown in FIG. 2. [Diagram 5] 2 is a partial cross-sectional view showing a state in which a mounting penetrator penetrates the leg, the storage portion, and the mounting base of the desk shown in FIG. 1. [Figure 6] 3 is a perspective view showing the configuration of the rear surface (lower surface) side of the mounting base shown in FIG. 2. [Figure 7] 3 is a partially enlarged bottom view showing the right half of the mounting base shown in FIG. 2 for explaining the configuration of a top plate side mounting portion formed on the mounting base. FIG. [Figure 8] FIG. 1 is a perspective view showing an outline of the external configuration of a desk equipped with a conventional desk top. [Figure 9] 13 is a partially enlarged bottom view showing the right half of the mounting base for explaining the configuration of a top plate side mounting portion formed on the mounting base according to a modified example of the present invention. FIG. [Figure 10]1. FIG. 4 is a partial cross-sectional view showing the internal structure of a penetrator fitting portion according to another modified example of the present invention, illustrating the state in which a mounting penetrator penetrates the leg, storage portion, and mounting base of the desk shown in FIG. [Figure 11] 1. FIG. 4 is a partial cross-sectional view showing the internal structure of a penetrator fitting portion according to another modified example of the present invention, illustrating the state in which a mounting penetrator penetrates the leg, storage portion, and mounting base of the desk shown in FIG. [Figure 12] 1. FIG. 4 is a partial cross-sectional view showing the internal structure of a penetrator fitting portion according to another modified example of the present invention, illustrating the state in which a mounting penetrator penetrates the leg, storage portion, and mounting base of the desk shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] An embodiment of a desk according to the present invention will be described below with reference to the drawings. Fig. 1 is a perspective view showing an outline of the external configuration of a desk 100 equipped with a desk top 120 according to an embodiment of the present invention, viewed obliquely from the front. Fig. 2 is an exploded perspective view showing the main components constituting the desk 100 shown in Fig. 1. Fig. 3 is an exploded perspective view showing the state in which the storage section 117 is placed on the legs 110 in the desk 100 shown in Fig. 2. Fig. 4 is an exploded perspective view showing the mounting base 121 and the top body 128 constituting the desk top 120 shown in Fig. 2.

[0027] This desk 100 is a study desk used by children or students in classrooms with chairs (not shown) in educational facilities such as elementary schools and junior high schools. Here, the side of desk 100 where the child or student who uses desk 100 is positioned (seated) (left side in FIG. 1) is the rear side of desk 100, the side opposite to the rear side where the teacher is positioned (right side in FIG. 1) is the front side of desk 100, the left side as viewed from the rear side is the left side of desk 100, and the right side as viewed from the rear side is the right side of desk 100.

[0028] (Desk 100 configuration) The desk 100 mainly comprises legs 110 and a desk top 120 (hereinafter simply referred to as the "top 120").

[0029] The legs 110 are components for supporting the tabletop 120 horizontally at a predetermined height from the floor surface, and are made by connecting multiple steel pipes together. Specifically, the legs 110 are each made up of two horizontal legs 111, two standing legs 112, one connecting rod 113, and a tabletop support part 114.

[0030] The two horizontal legs 111 are components arranged on the floor surface on which the desk 100 is placed to support the entire desk 100, and are composed of two pipes extending parallel to each other in the front-to-rear direction on both the left and right sides of the desk 100. In this case, resin leg end fittings 111a that support each horizontal leg 111 by floating it above the floor surface are fitted into both longitudinal ends of each horizontal leg 111 (in other words, both longitudinal ends of the desk 100).

[0031] The two legs 112 are components that support the tabletop support section 114 on each horizontal foot 111, and are made of two pipes that stand parallel to each other from each horizontal foot 111. In this case, the two legs 112 stand on the two horizontal feet 111 at positions that are biased toward one end (the front side) of each of the two ends of the horizontal feet 111. It goes without saying that each leg 112 may stand on the two horizontal feet 111 at a position biased toward the center in the longitudinal direction or toward the user (the rear side).

[0032] The connecting rod 113 is a component for connecting the two upright legs 112 to each other to integrate the two upright legs 112, and is made of a pipe material extending in the left-right direction.

[0033] The tabletop support part 114 is a part that integrally connects the two upright legs 112 and supports the storage part 117, and is configured by bending a pipe material into a shape that fits the outer periphery of the storage part 117, forming a substantially U-shape in a plan view. In this case, the tabletop support part 114 is formed into a U-shape that opens at the rear side in a plan view. The tabletop support part 114 is provided with leg body side attachment parts 115a to 115i, respectively, and is provided with a hook 116.

[0034] The leg body side mounting parts 115a to 115i are parts through which the mounting through-hole 119 penetrates, and are formed by through-holes that penetrate the pipe material constituting the top board support part 114 in the vertical direction. The leg body side mounting parts 115a to 115i are formed directly below the storage section side through-holes 118a to 118i, which will be described later. In this embodiment, the leg body side mounting parts 115a to 115i are formed in the pipe material constituting the right side of the three sides constituting the U-shaped top board support part 114, with the leg body side mounting parts 115a to 115c formed in the pipe material constituting the right side, the leg body side mounting parts 115d to 115f formed in the pipe material constituting the front side, and the leg body side mounting parts 115g to 115i formed in the pipe material constituting the left side.

[0035] Hook 116 is a part on which a user can hang a bag or the like, and is formed in a J shape. Hook 116 is provided at the longitudinal center of each of the left and right pipe members that make up top board support part 114.

[0036] Storage section 117 is a component that forms a space for a user of desk 100 to store items such as textbooks, notebooks, stationery, etc., and is made of a metal or resin material. Specifically, storage section 117 is configured to have bottom section 117a, side wall sections 117b to 117d, and top board placement sections 117e to 117g, respectively.

[0037] Bottom portion 117a is a portion on which a user places articles such as textbooks, notebooks, stationery, etc., and is formed in a flat shape. In this embodiment, bottom portion 117a is formed in a substantially rectangular shape in a plan view.

[0038] The side walls 117b to 117d are portions that prevent articles placed on the bottom 117a from falling off the bottom 117a and connect the bottom 117a to the top plate placement portions 117e to 117g, and are formed in the shape of walls standing on the periphery of the bottom 117a. Specifically, the side walls 117b to 117d are formed such that the side wall 117b stands on the right side of the bottom 117a, the side wall 117c stands on the front side of the bottom 117a, and the side wall 117d stands on the left side of the bottom 117a. In this case, the side wall 117c is formed such that both ends are continuously connected to the side walls 117b and 117d, respectively.

[0039] That is, side walls 117b to 117d are formed in a U-shape in plan view along top plate support portion 114. Note that bottom portion 117a and side walls 117b to 117d may have through holes such as slits formed therein to ensure ventilation within storage portion 117, or may be formed in a net shape.

[0040] The tabletop placement parts 117e to 117g are parts for supporting the tabletop 120 in a state where it is placed on the tabletop support part 114 of the leg 110, and the upper ends of the side walls 117b to 117d are bent outwardly to form flange shapes extending horizontally in a plane. Specifically, the tabletop placement parts 117e to 117g are formed such that the tabletop placement part 117e is formed by bending the upper end of the side wall part 117b outward, the tabletop placement part 117f is formed by bending the upper end of the side wall part 117c outward, and the tabletop placement part 117g is formed by bending the upper end of the side wall part 117d outward. In this case, the tabletop placement part 117f is formed such that both ends are continuously connected to the tabletop placement parts 117e and 117g. The top board placement portions 117e to 117g are formed with storage portion side through-holes 118a to 118i, respectively.

[0041] The storage section side through-holes 118a to 118i are portions through which the mounting through-hole 119 penetrates, and are formed by through-holes that penetrate the top board mounting parts 117e to 117g in the up-down direction, respectively. Specifically, the storage section side through-holes 118a to 118i are formed such that the storage section side through-holes 118a to 118c are formed in the top board mounting part 117e, the storage section side through-holes 118d to 118f are formed in the top board mounting part 117f, and the storage section side through-holes 118g to 118i are formed in the top board mounting part 117g, respectively. In this case, the storage section side through-holes 118a to 118i are formed with a hole diameter (long hole or similar shape) larger than the leg body side mounting parts 115a to 115i arranged directly below and the first fitting part 123a (described later) arranged directly above.

[0042] The mounting through-hole 119 is a part for fixing the tabletop 120 to the leg 110, and is configured by forming a male screw on the outer periphery of a rod with a needle-like pointed tip. That is, in this embodiment, the mounting through-hole 119 is configured by a tapping screw. As shown in FIG. 5, the mounting through-hole 119 is formed to a length that can penetrate the tabletop support part 114, the tabletop placement parts 117e-117g of the storage part 117, and the tabletop side attachment parts 122a-122f, 125.

[0043] As shown in FIGS. 6 and 7, the tabletop 120 is a component that constitutes the uppermost support surface of the desk 100, and is mainly composed of an attachment base 121 and a tabletop main body 128.

[0044] The mounting base 121 is a component for mounting the tabletop main body 128 to the tabletop support part 114 via the storage part 117, and is configured by molding a resin material into a plate shape. Specifically, the mounting base 121 is formed in a rectangular shape in a plan view that covers the bottom part 117a of the storage part 117 and covers the outer periphery of the tabletop placement parts 117e to 117g. The mounting base 121 is formed with tabletop side mounting parts 122a to 122f, 125 and main body mounting parts 127a to 127e, respectively.

[0045] The top board side mounting portions 122a to 122f, 125 are portions for mounting the mounting base 121 to the leg body 110, and are formed in portions facing the storage section side through-holes 118a to 118i of the storage section 117 and around them. Specifically, top plate side mounting portions 122a to 122f are formed in such a manner that top plate side mounting portion 122a is formed in a portion facing storage section side through-portions 118a, 118b respectively and around the portion, top plate side mounting portion 122b is formed in a portion facing storage section side through-portion 118c and around the portion, top plate side mounting portion 122c is formed in a portion facing storage section side through-portion 118d and around the portion, top plate side mounting portion 122d is formed in a portion facing storage section side through-portion 118f and around the portion, top plate side mounting portion 122e is formed in a portion facing storage section side through-portion 118g and around the portion, and top plate side mounting portion 122f is formed in a portion facing storage section side through-portions 118h, i and around the portion.

[0046] Moreover, the top board side attachment portion 125 is formed at a position facing the storage unit side through-hole 118e. In Fig. 4, in order to show the positional relationship of each of the storage unit side through-holes 118a-118i with respect to the top board side attachment portions 122a-122f, 125, each position of the storage unit side through-holes 118a-118i projected onto the top board side attachment portions 122a-122f, 125 is shown by a two-dot chain circle. Each of these top board side attachment portions 122a-122f is formed by a through-hole fitting portion 123.

[0047] The penetrator fitting portion 123 is a portion into which the mounting penetrator 119 that penetrates the top board support portion 114 and the top board placement portions 117e to 117g of the storage portion 117 is fitted, and is formed in a groove shape. In this embodiment, the penetrator fitting portion 123 is formed in a wave shape that extends in one direction while repeatedly bending. The penetrator fitting portion 123 is mainly composed of a first fitting portion 123a and a second fitting portion 123b.

[0048] The first fitting portion 123a is a portion into which the male thread at the middle portion of the shaft portion of the mounting penetrator 119 partially fits in the circumferential direction after the tip portion of the mounting penetrator 119 has passed, and is formed in a groove shape that sandwiches the shaft portion of the mounting penetrator 119. In this case, the first fitting portion 123a is formed with a groove width narrower than the outer diameter of the fitting portion of the shaft portion of the mounting penetrator 119. Also, the first fitting portion 123a is formed with a depth greater than the thickness of the second fitting portion 123b.

[0049] The first fitting portion 123a is formed to open on the surface of the mounting base 121 facing the storage portion 117. The first fitting portion 123a is formed with a plurality of first fitting portions 123a densely so as to face the portion facing the storage portion side through-portions 118a-118d, 118f-118i corresponding to the top plate side mounting portions 122a-122f and the periphery thereof. In this case, the interval between the adjacent first fitting portions 123a is narrower than the groove width of the first fitting portion 123a, and the wall thickness between the adjacent first fitting portions 123a is formed so as to be elastically deformed when the mounting through-portion 119 enters the first fitting portion 123a. That is, the two side walls constituting the groove of the first fitting portion 123a are formed in a plate shape.

[0050] The second fitting portion 123b is a portion into which the male thread of the tip end side portion of the shaft portion of the mounting penetrator 119 fits after the tip end of the mounting penetrator 119 passes, and is formed in a solid plate shape. In this case, the second fitting portion 123b is formed to cover all the first fitting portions 123a that are closely packed to form each of the top plate side mounting portions 122a to 122f, and to close the end portion opposite the opening of the first fitting portion 123a. The first fitting portion 123a and the second fitting portion 123b form the penetrator fitting portion 123 on the surface of the mounting base 121 facing the top plate main body 128, protruding toward the top plate main body 128. An internal wall 124 is formed inside the penetrator fitting portion 123.

[0051] The inner wall 124 is a portion for preventing the groove width of the first fitting portion 123a from being excessively widened, and is formed in a wall shape in the groove width direction of the first fitting portion 123a. In this case, the inner wall 124 is formed at a height that does not reach the opening of the first fitting portion 123a, rising from the second fitting portion 123b. The inner wall 124 can also be formed at a height that rises from the second fitting portion 123b and reaches the opening of the first fitting portion 123a to be flush with the opening, or at a height that exceeds the opening. The inner wall 124 is formed at appropriate intervals along the longitudinal direction of the first fitting portion 123a.

[0052] The top board side mounting portion 125 is a portion into which the mounting penetrator 119 that penetrates the top board support portion 114 and the top board placement portions 117e to 117g of the storage portion 117 is fitted, and is formed in a groove shape similar to the penetrator fitting portion 123. In this embodiment, the top board side mounting portion 125 is formed in a straight line. Similar to the penetrator fitting portion 123, the top board side mounting portion 125 is composed of a first fitting portion 125a and a second fitting portion 125b.

[0053] Similar to the first fitting portion 123a, the first fitting portion 125a is a portion into which the male thread at the middle portion of the shaft portion of the mounting penetrator 119 partially fits in the circumferential direction after the tip portion of the mounting penetrator 119 has passed, and is formed in a groove shape that sandwiches the shaft portion of the mounting penetrator 119. Since the first fitting portion 125a is formed in the same manner as the first fitting portion 123a, a description thereof will be omitted (see FIG. 5).

[0054] Only one first fitting portion 125a is formed, extending in the front-rear direction of the desk 100, at a position facing a portion facing the storage section side through-portion 118e corresponding to the top board side mounting portion 125. In this case, the first fitting portion 125a is formed, together with the second fitting portion 125b, on the surface of the mounting base 121 facing the top board main body 128, protruding toward the top board main body 128. In this case, the wall thickness of the first fitting portion 125a is formed to a thickness that causes elastic deformation when the mounting through-portion 119 enters the first fitting portion 125a.

[0055] The second fitting portion 125b, like the second fitting portion 123b, is a portion into which the entire circumference of the male thread of the tip end side portion of the shaft portion of the mounting penetrator 119 fits after the tip end of the mounting penetrator 119 has passed, and is formed in a solid plate shape. This second fitting portion 125b is formed in the same manner as the second fitting portion 123b, so a description thereof will be omitted (see FIG. 5). In addition, inside the top plate side mounting portion 125, internal walls 126 similar to the internal walls 124 inside the penetrator fitting portion 123 are formed at appropriate intervals.

[0056] The body mounting parts 127a to 127e are parts to which the top plate body 128 is attached, and are formed by notches into which the hook pieces of the top plate body 128 fit. The body mounting parts 127a to 127e are formed such that the body mounting parts 127a and 127b are respectively formed on the outer edge of the rear side of the mounting base 121, and the body mounting parts 127c to 127e are respectively formed on the outer edge of the front side of the mounting base 121. The respective parts of the mounting base 121 can be integrally manufactured by injection molding a resin material.

[0057] The tabletop body 128 is a component that constitutes the uppermost placement surface of the desk 100, and is formed by forming a resin material into a planar, approximately rectangular plate. In this case, the top surface of the tabletop body 128 is formed as a flat surface. The tabletop body 128 is formed so that the outer periphery of the top surface hangs downward so as to cover the outer periphery of the mounting base 121. The inner surface of the tabletop body 128 is formed with claw-shaped hook pieces (not shown) that can be hooked onto the body mounting parts 127a to 127e, respectively. Each part of the tabletop body 128 can be integrally manufactured by injection molding a resin material.

[0058] (Assembly of Desk 100) Next, the assembly work of the desk 100 thus configured will be described. First, an operator prepares the legs 110, the storage section 117, the mounting penetrating body 119, the mounting base 121, and the table top body 128. In this case, the legs 110 are manufactured in a separate manufacturing process, such as bending a pipe material, drilling holes, and welding. The storage section 117, the mounting base 121, and the table top body 128 are manufactured by injection molding a resin material.

[0059] Next, the worker places the tabletop placement parts 117e-117g of the storage part 117 on the tabletop support part 114 of the leg body 110 (see FIG. 3). Next, the worker places the mounting base 121 on the storage part 117 placed on the tabletop support part 114. In this case, the worker places the tabletop side mounting parts 122a-122f, 125 of the mounting base 121 on the tabletop placement parts 117e-117g of the storage part 117 placed on the tabletop support part 114. As a result, the storage part side through parts 118a-118i of the storage part 117 and the tabletop side mounting parts 122a-122f, 125 of the mounting base 121 are respectively positioned on the leg body side mounting parts 115a-115i formed on the tabletop support part 114 of the leg body 110.

[0060] Next, the worker fixes the storage section 117 and the mounting base 121 to the leg 110. Specifically, the worker inserts the mounting through-hole 119 from below into the leg-side mounting sections 115a-115i formed on the top-board support section 114 of the leg 110. As a result, the mounting through-hole 119 penetrates the leg-side mounting sections 115a-115i, and then penetrates the storage-side through-holes 118a-118i to reach the top-board side mounting sections 122a-122f, 125 of the mounting base 121. That is, the tip of the mounting through-hole 119 reaches the first fitting section 123a of the through-hole fitting section 123 in the top-board side mounting sections 122a-122f or the first fitting section 125a of the top-board side mounting section 125.

[0061] Next, the worker screws in the mounting penetrator 119 that has reached the top plate side mounting parts 122a to 122f, 125 (see FIG. 5). As a result, the mounting penetrator 119 is screwed in while pushing and widening the first fitting part 123a of the penetrator fitting part 123 or the first fitting part 125a of the top plate side mounting part 125, and then reaches the second fitting part 123b or the second fitting part 125b and is further screwed in. In this case, even if the tip position of the mounting penetrator 119 does not exactly match the position of the first fitting parts 123a, 125a, the worker can screw the mounting penetrator 119 into the first fitting parts 123a, 125a by elastically deforming the side walls that constitute the first fitting parts 123a, 125a or by slightly shifting the position of the mounting penetrator 119.

[0062] In addition, since the first fitting portion 123a is formed in a serpentine shape, the tip of the mounting penetrator 119 can be positioned toward the center of the groove by slightly shifting the position of the mounting penetrator 119 in the longitudinal direction, making it easier to screw it in. In addition, the mounting penetrator 119 screwed into the second fitting portions 123b, 125b penetrates the second fitting portions 123b, 125b with its entire circumference screwed into the second fitting portions 123b, 125b by the solid second fitting portions 123b, 125b. This allows the worker to fix the storage portion 117 and the mounting base 121 to the leg 110.

[0063] Next, the worker attaches the table top body 128 to the mounting base 121. Specifically, the worker places the table top body 128 over the mounting base 121 attached to the legs 110 and presses it, thereby attaching the table top body 128 to the mounting base 121. In this way, the worker can complete the desk 100.

[0064] Next, the work of replacing the tabletop 12 with respect to the existing desk 10 shown in FIG. 8 will be described. Here, the existing desk 10 is configured by attaching the tabletop 12 to the upper part of the leg body 11 configured in the same manner as the leg body 110. In this case, when a storage section 13 (corresponding to the storage section 117) is attached to a tabletop support section (corresponding to the tabletop support section 114) of the leg body 11 (not shown), the tabletop 12 is attached via the storage section 13, and when the storage section 13 is attached to the underside of the tabletop 12, the tabletop 12 is directly attached to the tabletop support section of the leg body 11. The tabletop 12 may also be formed of wood into a board shape and directly attached to the tabletop support section of the leg body 11. In this case, the tabletop 12 is attached to the tabletop support section of the leg body 11 by tapping screws or bolts.

[0065] Therefore, the worker first removes the top plate 12 from the existing desk 10. Next, the worker attaches the mounting base 121 to the top plate support part of the leg body 11 directly or via the storage part 13 using the mounting penetrator 119, and then attaches the top plate main body 128 onto the mounting base 121. In this way, the worker can attach the top plate 120 to the existing desk 10 to create the desk 100.

[0066] (Operation of Desk 100) Next, the operation of the desk 100 thus configured will be described. A user of the desk 100 places the desk 100 in a location where the desk 100 is to be used. Next, the user places a chair (not shown) behind the desk 100, sits down, and uses the desk 100. In this case, the user can store items such as textbooks, notebooks, or stationery in the storage section 117.

[0067] As can be understood from the above operation description, according to the above embodiment, the desk 100 is formed with a dense number of penetrating body fitting portions 123 into which the mounting penetrating bodies 119 that penetrate the leg side mounting portions 115a to 115i fit, thereby expanding the range of mounting positions for the leg side mounting portions 115a to 115i, thereby reducing the manufacturing and maintenance burdens.

[0068] Specifically, the table top 120 allows multiple types of legs 110 to be selectively attached to one table top 120, and also reduces the burden of forming table top side attachment parts 122a-122f in precise positions on the table top 120. This also means that multiple types of table tops 120 with different specifications such as shapes or materials can be selectively attached to the legs 110. In addition, since the attachment position of the table top 120 to the legs 110 can be changed, a repaired table top 120 or a table top 120 that was used on another desk 100 can be attached to the legs 110 using a penetrating body fitting part 123 different from the previous one (i.e., by shifting the attachment position).

[0069] Furthermore, the present invention is not limited to the above-described embodiments, and various modifications are possible without departing from the scope of the present invention. In the description of each modification, the same reference numerals are used to designate the same parts as those in the above-described embodiments, and redundant description will be omitted.

[0070] For example, in the above embodiment, the mounting base 121 is attached to the top board support part 114 of the leg 110 via the top board placement parts 117e-117g of the storage part 117. That is, in the above embodiment, the mounting base 121 is indirectly attached to the top board support part 114 of the leg 110 via the top board placement parts 117e-117g of the storage part 117. However, the mounting base 121 may be directly attached to the top board support part 114 of the leg 110 in cases where the storage part 117 does not exist or where the storage part 117 is attached to a location other than the top board support part 114 of the leg 110.

[0071] In the above embodiment, the penetrator fitting portion 123 is formed in a groove shape that meanders regularly in a wavy manner. However, the penetrator fitting portion 123 can also be formed in a groove shape that meanders irregularly. The penetrator fitting portion 123 can also be formed in a groove shape that extends linearly. In this case, the penetrator fitting portion 123 can also be formed to extend in an oblique direction that is inclined to the right or left with respect to the front-rear direction of the desk 100.

[0072] Also, the penetrator fitting portion 123 can be formed as a hole with a bottom instead of a groove shape. In this case, the penetrator fitting portion 123 can be formed as a hexagonal shape in a plan view, for example, as shown in Fig. 9. It is needless to say that the penetrator fitting portion 123 may be formed as a polygonal shape or an irregular shape other than a hexagonal shape in a plan view, for example, a circle (including an oval), a square, a triangle, or the like in a plan view.

[0073] In the above embodiment, the penetrator fitting portion 123 is formed such that the length of the first fitting portion 123a in the depth direction is longer than the thickness of the second fitting portion 123b. This allows the top plate 120 to obtain a fitting force while suppressing the force required for screwing. Even if the top plate 120 is slightly misaligned with respect to the leg side mounting portions 115a-115d, 115f-115i or the storage section side penetrating portions 118a-118d, 118f-118i, the first fitting portion 123a can flexibly deform with respect to the mounting penetrator 119 to obtain a fitting force. However, the penetrator fitting portion 123 can also be formed such that the length of the first fitting portion 123a in the depth direction is the same as or shorter than the thickness of the second fitting portion 123b.

[0074] In the above embodiment, the first fitting portion 123a is formed as a straight hole having a constant size (groove width) in the depth direction. However, the first fitting portion 123a may be formed as a groove (or hole) whose size is continuously or stepwise smaller on the innermost side than on the opening side. Specifically, the first fitting portion 123a may be formed as a tapered shape in which the cross-sectional shape of the groove (or hole) linearly decreases toward the innermost part in the depth direction, as shown in FIG. 10. The first fitting portion 123a may be formed as a tapered shape in which the cross-sectional shape of the groove (or hole) is convexly curved and decreases toward the innermost part in the depth direction, as shown in FIG. 11. The first fitting portion 123a may be formed as a stepped hole in which the cross-sectional shape of the groove (or hole) is stepwise smaller toward the innermost part in the depth direction, as shown in FIG. 12. This allows the worker to easily insert the mounting penetrating body 119 into the first fitting portion 123a while increasing the radial fitting amount at the back of the first fitting portion 123a, thereby improving the fitting force.

[0075] In the above embodiment, the top plate 120 has the top plate side mounting parts 122a to 122f integrally formed with the mounting base 121. That is, the top plate 120 has the top plate side mounting parts 122a to 122f integrally formed with the top plate. However, the top plate 120 may have the top plate side mounting parts 122a to 122f formed separately. For example, the top plate 120 may have the separate top plate side mounting parts 122a to 122f attached to the mounting base 121 (or to the top plate main body 128 when the mounting base 121 does not exist) by using a means such as a screw, an adhesive, or fitting. The same applies to the top plate side mounting part 125.

[0076] In the above embodiment, the top board 120 has the top board side mounting parts 122a-122f formed on the underside of the mounting base 121. However, the top board side mounting parts 122a-122f only need to be provided at positions where they can be attached to the legs 110, and do not necessarily have to be formed on the underside of the mounting base 121. For example, the top board side mounting parts 122a-122f may be provided on the outer periphery of the mounting base 121 (or on the top board main body 128 when the mounting base 121 does not exist). The same applies to the top board side mounting part 125.

[0077] Also, in the above embodiment, the penetrating body fitting portion 123 is formed on the peripheral portion (right side, left side, and front side) of the bottom surface of the mounting base 121 other than the portion (rear side) of the top plate 120 that faces the user. This allows the top plate 120 to effectively utilize the space of the portion of the bottom surface of the top plate 120 that faces the user as an opening portion to a storage space, etc. However, it goes without saying that the penetrating body fitting portion 123 may be provided on the portion (rear side) of the bottom surface of the mounting base 121 that faces the user of the top plate 120.

[0078] In the above embodiment, the mounting penetrator 119 is configured to have a male thread on the outer periphery. However, the mounting penetrator 119 may be configured without the male thread on the outer periphery. In this case, the mounting penetrator 119 is fitted to the first fitting portion 123a and the second fitting portion 123b so as to pierce them.

[0079] In the above embodiment, the first fitting portions 123a, 125a are configured to include the internal walls 124, 126. However, the first fitting portions 123a, 125a may be configured without including the internal walls 124, 126. [Explanation of symbols]

[0080] 10...Existing (conventional) desk, 11...Leg body, 12...Tabletop, 13...Storage section, 100...Desk, 110...leg body, 111...horizontal foot, 111a...leg end fitting, 112...standing leg, 113...connecting rod, 114...tabletop support portion, 115a to 115i...leg body side mounting portion, 116...hook, 117...storage portion, 117a...bottom portion, 117b to 117d...side wall portion, 117e to 117g...tabletop placement portion, 118a to 118i...storage portion side penetration portion, 119...mounting penetration body, 120...desk top, 121...mounting base, 122a-122f...top side mounting portion, 123...penetrating body fitting portion, 123a...first fitting portion, 123b...second fitting portion, 124...internal wall, 125...top side mounting portion, 125a...first fitting portion, 125b...second fitting portion, 126...internal wall, 127a-127e...main body mounting portion, 128...top main body.

Claims

1. A desk top plate that is attached to a leg having a leg-side attachment part and standing on a floor surface via the leg-side attachment part and a table top side attachment part, The top plate side mounting portion is The rod body has a tip end formed into a needle-like pointed shape and has a penetrating body fitting portion into which a mounting penetrating body that penetrates the leg body side mounting portion is fitted, The penetrating body fitting portion is A first fitting portion formed in a hole or groove shape narrower than an outer shape of the mounting penetrator; A desk top characterized in that it has a plurality of the penetrator fitting portions formed closely together, and a solid second fitting portion formed at the innermost portion of the first fitting portion into which the tip of the mounting penetrator is inserted.

2. The desk top according to claim 1, The first fitting portion is A desk top formed in a meandering groove shape.

3. The desk top according to claim 1, The first fitting portion is A desk top having a cross-sectional shape formed into a hexagonal hole.

4. The desk top according to claim 1, The first fitting portion is A desk top plate characterized in that the length in the depth direction is longer than the second fitting portion.

5. The desk top according to claim 1, an attachment base having the top plate side attachment portion and attached to the leg; a tabletop body that forms an upper surface of the tabletop and is attached to the mounting base.

6. The desk top according to claim 1, The penetrating body fitting portion is A desk top characterized in that it is integrally formed on the underside of the desk top.

7. The desk top according to claim 1, The penetrating body fitting portion is The desk top is characterized in that the peripheral portion of the underside of the desk top is formed on a peripheral portion other than a portion facing a user of the desk top.

8. The desk top according to claim 1, The first fitting portion of the penetrator fitting portion is This desk top is characterized in that the innermost part is smaller in size than the opening part.

9. A leg having a leg-side attachment portion and standing upright from a floor surface; A desk comprising the desk top according to any one of claims 1 to 8, which has a top-top side mounting portion for mounting to said leg.

10. The desk according to claim 9, This desk is characterized in that the tip of a rod body is formed into a needle-like sharpness, passes through the leg side mounting part, and has a male thread formed on the outer periphery of a mounting penetrator that fits into the penetrator fitting part in the top plate side mounting part.

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