Desk

Abstract

To provide a desk having a light weight and strength whose top board is not warped, which has excellent designability and an uncomplicated structure.SOLUTION: A desk is made up of a top board, leg parts, and a connection member. The top board has one or more connection member insertion holes on at least one side of the top board. The leg parts include a connection part relative to the connection member so as to support the top board. The connection member is made up of a fitting member and a receiving member. The top board and the leg parts are connected to each other by the connection member.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to desks (or tables). [Background technology]

[0002] Desks (tables are also used) are an essential piece of furniture in our lives, and are used in a variety of places, including homes, offices, restaurants, etc. However, even though they are all called desks, they come in a variety of shapes and materials, and in recent years many desks with excellent functions and designs have been developed.

[0003] However, because a typical desk often uses a wide board, there is a problem that the tabletop made of a single board or laminated lumber warps due to environmental influences such as temperature and humidity. There are various factors that cause this, but one of the causes is the relationship between the cutting direction and the direction of the annual rings in the case of a single board, and the difference in the expansion and contraction rate of each board in the case of laminated lumber made of multiple boards. A method that has been used to solve this type of tabletop warping is to fix a metal L-shaped angle to prevent the tabletop from warping to the back of the tabletop, which is not noticeable. Another prior art is Patent Document 1, which discloses a technique for preventing the tabletop from warping. Patent Document 1 discloses a table that strongly prevents the tabletop from warping by arranging a reinforcing frame inside the tabletop, improves the strength, thinning, and appearance of the tabletop, and strengthens the support strength of the support legs, etc.

[0004] In addition, when creating a highly designed desk, it is not easy to improve functionality such as strength and weight reduction. Among them, Patent Document 2 discloses a desk that can easily reduce the number of components and increase rigidity. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2002-000357 A [Patent Document 2] JP 2005-137709 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, although the desk described in Patent Document 1 can suppress warping of the tabletop while maintaining the strength of the desk, it has a large number of parts and has a reinforcing frame inside the tabletop, so the design may be a matter of preference. Also, the desk described in Patent Document 2 may have a complex structure in order to enhance the design and functionality. Also, there are not many desks that express the quality of the wood itself, which is the material of the tabletop. It can be said that such problems are not limited to Patent Document 1 and Patent Document 2, but are often encountered in commercially available desks.

[0007] To provide a desk which is lightweight and strong, has an excellent design and does not have a complicated structure, and which eliminates warping of the desk top plate, and which has been made in consideration of such problems. [Means for solving the problem]

[0008] That is, the present invention relates to the following (1) to (6). (1) A desk comprising a tabletop, legs and connecting members, wherein the tabletop has one or more connecting member insertion holes on at least one side of the tabletop, the legs have connecting parts with the connecting members to support the tabletop, the connecting parts are composed of an inserting member and a receiving member, and the tabletop and the legs are connected by the connecting members. (2) A desk consisting of a tabletop, legs, and connecting members, the tabletop having at least one connecting member insertion hole on at least one side of the tabletop, the legs having a frame-like, generally rectangular shape, one side of the legs being a connecting portion with the connecting member, and the tabletop being supported by the legs; A desk characterized in that the connecting member is composed of an insert member and a receiving member, and the tabletop and the legs are connected by the connecting member. (3) The desk according to (1) or (2), wherein the fitting member is a substantially rectangular plate-like member having at least one insertion rod-shaped portion on one side. (4) A desk described in any one of (1) to (3), characterized in that the tabletop and the legs are connected by an engaging member and a receiving member of the connecting member, and the tabletop and the legs are connected by being sandwiched between the engaging member and the receiving member of the connecting member. (5) A desk described in any one of (1) to (4), characterized in that the fitting member of the connecting member has an insertion rod-shaped portion with a male thread, and the receiving member of the connecting member has an insertion rod-shaped portion receiving portion with a female thread, and the top plate and the legs are connected by screwing the insertion rod-shaped portion and the receiving member together. (6) The desk described in (5) above, characterized in that the fitting member of the connecting member has a top board fitting surface and connecting member fitting step surfaces at both ends of one side of the top board into which the top board fitting surface fits, and the connecting portion with the connecting member provided on the leg has a top board fitting surface and leg fitting step surfaces at both ends of the other side of the top board into which the connecting portion with the connecting member fits. Effect of the Invention

[0009] According to the present invention, it is possible to provide a desk which is lightweight and strong, has excellent design and does not have a complex structure, while eliminating warping of the desk top. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view of a desk according to the present embodiment. [Diagram 2] FIG. 2 is a view of the desk according to this embodiment seen from the leg side. [Diagram 3] FIG. 3 is a diagram showing both ends of the front side of the desk top according to this embodiment. [Figure 4] FIG. 4 is a diagram showing the end portion on the rear side of the desk board according to this embodiment. [Diagram 5] FIG. 5 is a diagram showing the leg of the desk according to this embodiment from diagonally above and from the front. [Figure 6] FIG. 6 is a diagram of a fitting member of the coupling member according to this embodiment. [Figure 7] FIG. 7 is a view of the connecting member and the receiving member according to this embodiment. [Figure 8] FIG. 8 is a diagram showing a state in which legs are attached to the desk top using a joining member according to this embodiment. [Figure 9] FIG. 9 is a side view showing a cross section of the approximate center of the desk top according to this embodiment, illustrating the state when the joining member is sandwiched between the fitting member and the receiving member. [Figure 10] FIG. 10 is a diagram showing a state in which the leg portion according to this embodiment is sandwiched between the fitting member and the receiving member of the connecting member. [Figure 11] FIG. 11 is a side view of the desk according to this embodiment, seen from the leg side, showing the state in which the legs are attached to the top board by the joining members. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Next, an embodiment of the present invention will be described with reference to the drawings. Note that the embodiment described below is an example, and the present invention is not limited to the following aspects.

[0012] With reference to Figures 1 to 11, the overall configuration of a desk 1 according to an embodiment of the present invention will be described. The desk 1 is, for example, a desk (or a table) used for learning, office work, etc. in schools, offices, etc. Figure 1 is a perspective view of the desk 1 according to this embodiment. Figure 2 is a view of the desk 1 according to this embodiment seen from the leg side. As shown in Figures 1 and 2, the overall configuration of the desk 1 is composed of a tabletop 10 and legs 20. The desk 1 of this embodiment has a shape in which the legs 20 are provided on two sides at both ends of the approximately rectangular tabletop 1.

[0013] The tabletop 10 is a plate-like member having a substantially rectangular planar shape. In this embodiment, a single plate is used as the tabletop 10, but this is not particularly limited, and the tabletop 10 may be composed of multiple plates such as laminated wood. The legs 20 are substantially rectangular frame members, and in this embodiment, the inside of the substantially rectangular frame is hollow. The materials of the tabletop 10 and the legs 20 are not particularly limited, but in this embodiment, the tabletop 10 is made of wood and the legs 20 are made of metal, taking into consideration design and functionality.

[0014] Fig. 3 is a diagram showing the shape of one end of both ends of the front side of the tabletop 10 of the desk 1 according to this embodiment. The tabletop 10 has a joining member insertion groove 11, a joining member insertion hole 12, a joining member fitting step surface 13, and a leg insertion groove 14 at both ends where the legs 20 are joined. Fig. 4 is a diagram showing the end of the rear side of the board of the desk according to this embodiment. The rear side of the tabletop 10 has the joining member insertion hole 12 and the leg insertion groove 14, as well as a leg fitting step surface 15, at both ends where the legs 20 are joined. The joining member insertion groove 11, the joining member fitting step surface 13, the leg insertion groove 14, and the leg fitting step surface 15 are structures provided for joining to the joining member 30 and one side of the leg 20, and the length in the longitudinal direction of each is approximately equal to the length in the longitudinal direction and one side of the joining member 30 and the leg 20. In this embodiment, the length in the longitudinal direction of each is approximately equal to the length in the longitudinal direction and one side of the joining member 30 and the leg 20, but this is not particularly limited, and the length can be freely set. By making the lengths approximately equal as in this embodiment, the design and strength of the desk 1 are also excellent, so making the lengths approximately equal is more preferable.

[0015] FIG. 5 is a view showing the leg 20 of the desk 1 according to this embodiment from the diagonal upper side (a) and the front side (b). The leg 20 has an insertion protrusion 21, a coupling member insertion hole 22, and a top plate fitting surface 23. The shape of the leg 20 is not particularly limited as long as it has a coupling part 24 with the coupling member described later, but in this embodiment, a substantially rectangular frame member is formed. Specifically, a metal square pipe is processed and welded into a substantially rectangular shape, and the substantially rectangular frame has at least one side (corresponding to the coupling part 24 with the coupling member in this embodiment) that is fixed to the top plate 10. As shown in FIG. 5, the side (coupling part 24 with the coupling member) that is fixed to the top plate 10 has the insertion protrusion 21, the coupling member insertion hole 22, and the top plate fitting surface 23. In this embodiment, the joint 24 with the joining member uses one side of the leg 20, but if the leg 20 is not substantially rectangular, as long as it has the joint 24 with the joining member, it can be fixed by the joint 24 with the joining member and the joining member 30. The joint 24 with the joining member is substantially plate-shaped.

[0016] FIG. 6 is a diagram showing the fitting portion 31 of the connecting member 30 according to this embodiment. The connecting member 30 used in this embodiment is a member that is used by combining the fitting member 31 and the receiving member 32. The fitting portion 31 has an overall shape of a substantially plate-like shape, and an insertion protrusion 34 is formed at a location corresponding to the longitudinal side, and an insertion rod-shaped portion 33 and a top board fitting surface 35 are formed on one of the substantially plate-like surfaces of the fitting portion 31. The surface on which the insertion protrusion 34, the insertion rod-shaped portion 33, and the top board fitting surface 35 are formed is the surface that is connected to the top board 10. In this embodiment, the longitudinal length of the fitting portion 31 and the length of the side of the leg portion 20 that is connected to the top board 10 are substantially equal (shown in FIGS. 1, 2, 10, and 11). The equality of the lengths is not a limitation, but in order to improve the design of the desk 1, it is more preferable to make the lengths uniform to a certain extent as in this embodiment. Also, in order to suppress warping of the tabletop 10, it is preferable from the viewpoint of suppressing warping that the length of the longitudinal direction of the fitting member 31 is 50% or more of the length of one side of both ends of the tabletop 10 to which the legs 20 are joined. Furthermore, it is more preferable that the length of the longitudinal direction of the fitting member 31 is 65% or more of the length of one side of both ends of the tabletop 10 to which the legs 20 are joined, since this not only suppresses warping but also improves the stability of the desk 1. This makes it possible to more firmly suppress warping of the tabletop 10 and provide a highly stable desk 1.

[0017] 7 is a view showing the receiving portion 32 of the joining member 30 according to this embodiment. The receiving portion 32 used in this embodiment has a tightening hole , a top plate hole fixing portion 37, and an insertion rod-shaped portion receiving portion . The receiving part 32 is fixed by inserting the insertion rod-shaped part 33 of the fitting part 31 into the insertion rod-shaped part receiving part 38. The top plate hole part fixing part 37 has an outer diameter slightly smaller than the outer diameter of the connecting member insertion hole 12 formed in the top plate 10, since it is inserted into the connecting member insertion hole 12 formed in the top plate 10 from the back side of the top plate 10. The fastening hole 36 is a hexagonal recess in this embodiment, and can be fastened using a hexagonal wrench, but the shape of the fastening hole 36 is not limited, and it may be a hole of a shape that can be turned with a general Phillips or flat head screwdriver. In this embodiment, the insertion rod-shaped part 33 of the fitting part 31 is formed with a male thread at a certain length from the tip (adjusted according to the thickness of the top plate 10), and the insertion rod-shaped part receiving part 38 is formed with a female thread, and the insertion rod-shaped part 33 and the insertion rod-shaped part receiving part 38 are connected by screwing. In this embodiment, they are connected by a screw shape, but this is not limited to this, and they can be connected by a known connecting method.

[0018] FIG. 8 is a diagram showing a state where the legs 20 are attached to the top plate 10 of the desk 1 according to this embodiment using the connecting member 30. FIG. 8(a) is a diagram showing the state where the legs 20 are attached to the top plate 10 using the connecting member 30 (the fitting member 31 and the receiving member 32) from the side of the top plate. FIG. 8(b) is a diagram showing the state where the legs 20 are attached to the top plate 10 using the connecting member 30 (the fitting member 31 and the receiving member 32) from the rear side of the top plate. As shown in FIG. 8(a) (and FIGS. 1, 2, and 11), in the desk 1 of this embodiment, even if the top plate 10 and the legs 20 are connected to each other using the connecting member 30 (the fitting member 31 and the receiving member 32) on the front side and rear side of the top plate 10, the side to which the legs 20 of the top plate 10 are connected can form a smooth surface without any protrusions of the connecting member 30 appearing. This makes it possible to eliminate warping of the desk top and provide a desk 1 with excellent design.

[0019] In order to form a smooth surface like that of the desk 1 of this embodiment, as shown in FIG. 8(a) (and FIG. 11) of this embodiment, a joining member fitting step surface 13 (front surface) and a leg fitting step surface 15 (rear surface) are formed in the approximate center of both ends of the tabletop 10 (where the legs 20 are formed). Such a shape cannot be realized by simply joining the tabletop 10 and the legs 20 with a joining member 30. The joining member fitting step surface 13 forms a step lower than the surface of the tabletop 10 by the thickness of the fitting member 31, and the leg fitting step surface 15 is formed lower than the rear surface of the tabletop 10 by the thickness of one side of the leg 20. By providing a joining member fitting step surface 13 on the surface of the tabletop 10 and a leg fitting step surface 15 on the back surface of the tabletop 10, a step is provided on the surface by the thickness of the fitting member 31, so that even when the fitting member 31 is joined, it can form approximately the same plane as the surface of the tabletop 10, and because a step is provided on the back surface by the thickness of one side of the leg 20, it can form approximately the same plane as the back surface of the tabletop 10 even when one side of the leg 20 is joined. As a result, it is possible to realize a desk 1 in which the surface and back surface of the tabletop 10 are approximately the same plane, there are no protrusions, the front and back surfaces of the desk have excellent design uniformity, and the occurrence of warping can be suppressed.

[0020] The assembly structure of the desk 1 of this embodiment will be described with reference to the contents shown in Figs. 9 to 11. Fig. 9 is a side view showing a cross section of the approximate center of the top plate 10 of the desk 1 according to this embodiment, and is a diagram showing the state when it is sandwiched between the fitting member 31 and the receiving member 32 of the joining member 30. Fig. 10 is a diagram showing the state when the leg 20 according to this embodiment is sandwiched between the fitting member 31 and the receiving member 32 of the joining member 30. Fig. 11 is a side view of the desk 1 according to this embodiment seen from the leg 20 side, and is a diagram showing the state when the leg 20 is attached to the top plate 10 by the joining member 30.

[0021] Fig. 9(a) is a schematic diagram of the entire top plate 10 viewed from the side in cross section at approximately the center, with the right side (left side omitted) showing a schematic diagram of the joined state of the joining member 30. Fig. 9(a) is an enlarged diagram showing the shape of the top plate 10 and the joining member 30 joined together, viewed from the side in cross section at approximately the center of the top plate 10. An insert member 31 of the joining member 30 is joined from the front side of the top plate 10, and a receiving member 32 of the joining member 30 is joined from the back side of the top plate 10. Fig. 9 omits the legs 20 for schematic illustration, but in reality, one side of the legs 20 is fitted into the back side of the top plate 10 and then joined with the receiving member 32, as described later.

[0022] FIG. 10 is a schematic diagram showing the state when the leg 20 according to this embodiment is sandwiched between the fitting member 31 and the receiving member 32 of the connecting member 30. Normally, the top plate 10 is sandwiched between the fitting member 31 and the leg 20 to connect them, but in FIG. 10, the leg 20, the fitting member 31 of the connecting member 30, and the receiving member 32 are omitted in FIG. 10 to easily show the connected state of the leg 20, the fitting member 31 of the connecting member 30, and the receiving member 32. As shown in FIG. 10, an insertion protrusion 21 having the same length as one side of the leg 20 is formed on one side of the leg 20, and although not shown, one side of the leg 20 has a top plate fitting surface 23, and five connecting member insertion holes 22 are formed on the surface of the top plate fitting surface 23. The fitting member 31 of the connecting member 30 has five insertion rod-shaped portions 33 and an insertion protrusion 34 as shown in the figure. The receiving members 32 of the connecting member 30 correspond to the insertion rod-shaped portions 33 and are connected by screwing, so five of them are provided, which is the same number as the insertion rod-shaped portions 33. As shown in Figure 10, the insertion rod-shaped portion 33 of the fitting member 31 of the connecting member 30 is passed through the connecting member insertion hole 22 of the leg 20, the tip side of the insertion rod-shaped portion 33 is fitted into the receiving member 32 to connect them, and the receiving member 32 is tightened in the tightening hole, thereby connecting the top plate 10 (not shown) and the leg 20 with the connecting member 30. In this embodiment, five connecting member insertion holes 22, five receiving members 32, and five insertion rod-shaped portions 33 are formed, but this is not limited to this number, and there is no problem in increasing or decreasing the number depending on the size of the desk and the required strength.

[0023] Fig. 11 is a side view of the desk according to this embodiment seen from the leg side, showing the state in which the leg is attached to the top plate by the connecting member. As described above and shown in Fig. 11, the insertion rod-shaped portion 33 of the fitting member 31 is inserted into the connecting member insertion hole 12 provided at the end of the top plate 10, and then the tip of the insertion rod-shaped portion 33 is inserted into the connecting member insertion hole 22 of the leg 20. At that time, the insertion convex portion 34 of the fitting member 31 is inserted into the connecting member insertion groove 11 provided at the end of the front surface of the top plate 10, and then the insertion convex portion 21 provided on the leg 20 is inserted into the leg insertion groove 14 provided at the end of the back surface of the top plate 10. Finally, the top plate 10 and the leg 20 are connected by the connecting member 30 by tightening the insertion rod-shaped portion 33 and the receiving member 32. At this time, by using the structure of this embodiment, the connecting member 30 of the insertion rod-shaped portion 33 and the receiving member 32 is tightly fastened, so that the table top 10 can be firmly sandwiched between the connecting member 30 and the leg 20. This makes it possible to suppress warping of the table top 10, which is one of the issues of this embodiment. By similarly connecting the table top 10 and the leg 20 to the other end of the table top 10, the desk 1 can be easily assembled. In this embodiment, the points where the tabletop 10 and the legs 20 are joined using the joining members 30 are formed on the widthwise edges of both ends of the tabletop 10 that are approximately perpendicular to the grain of the wood (if the length direction is the edge that is approximately parallel to the grain, then the width direction is the edge that is approximately parallel to the grain). This is because tabletops made of a single board or laminated wood tend to warp strongly on the widthwise edges due to the nature of wood. By using such a structure, the desk 1 of this embodiment can eliminate warping of the tabletop, and can provide a desk that has excellent design, is not complicated in structure, and is lightweight and strong.

[0024] <Modification> (1) In the desk 1 of this embodiment, the connection points for the legs 20 are provided on part of the longitudinal direction of both ends of the table top 10, but it is also possible to provide such connection points on all longitudinal sides of both ends of the table top 10. (2) In this embodiment, the legs 20 of the desk 1 are approximately rectangular in shape; however, as long as they have one side for connecting to the tabletop 10, legs 20 having an approximately polygonal shape or other rounded shapes can also be used. (3) In the desk 1 of this embodiment, the table top 10 is made of wood and the legs 20 are made of iron, but even if the table top 10 is made of iron, which has little problem with warping of the table top, it is also possible to make both of them out of wood or iron, or it is also possible to make the table top 10 out of iron and the legs 20 out of wood. This makes it possible to provide a desk 1 with excellent design that meets the needs. [Explanation of symbols]

[0025] 1 desk 10. Top plate 11 Joint member insertion groove 12 Connection part insertion hole 13 Joint member fitting step surface 14 Leg insertion groove 15 Leg fitting step surface 20 Legs 21 Insertion protrusion 22 Connection part insertion hole 23 Top plate fitting surface 24 Connection with connecting member 30 Connecting member 31 Insertion member 32 Receiving member 33 Insertion rod 34 Insertion protrusion 35 Top plate fitting surface 36 Fastening hole 37 Top plate hole fixing part 38 Insertion rod receiving part

Claims

1. A desk consisting of a top plate, legs, and connecting members, The top plate has one or more connecting member insertion holes on at least one side of the top plate, The legs have a joint with a joint member to support the top plate, The coupling member is composed of a fitting member and a receiving member, A desk, wherein the tabletop and the legs are connected by the connecting member.

2. A desk consisting of a top plate, legs, and connecting members, The top plate has one or more coupling member insertion holes on at least one side of the top plate, The leg portion has a generally rectangular frame shape, and one side of the leg portion is a joint portion with the joint member, The legs support the top plate, The coupling member is composed of a fitting member and a receiving member, A desk, wherein the tabletop and the legs are connected by the connecting member.

3. 3. The desk according to claim 1, wherein the fitting member is a substantially rectangular plate-like member having at least one insertion rod-like portion on one side.

4. The top plate and the legs are connected by the fitting member and the receiving member of the connecting member, 4. The desk according to claim 1, wherein the table top and the legs are joined by being sandwiched between the fitting member and the receiving member of the joining member.

5. The fitting member of the coupling member has an insertion rod-shaped portion provided with a male thread, and the receiving member of the coupling member has an insertion rod-shaped portion receiving portion provided with a female thread, By screwing the insertion rod portion and the receiving member, 5. The desk according to claim 1, wherein the tabletop and the legs are joined together.

6. The fitting member of the connecting member has a top plate fitting surface. The top plate has a connecting member fitting step surface at both ends of one surface of the top plate, the connecting member fitting step surface being shaped to fit into the top plate fitting surface, The joint portion of the leg portion and the joint member has a top plate fitting surface, 6. The desk according to claim 5, further comprising leg fitting step surfaces at both ends of the other side of the table top, the step surfaces being shaped to fit the joints with the joint members.

Images