Auxiliary tool for desk and desk system

Abstract

To provide an auxiliary tool for desks which can suppress a fall of an object placed on a desk and can be easily attached to the desk.SOLUTION: An auxiliary tool 1 for desks includes a frame part 10 that can be attached to and detached from a peripheral edge part 92 of a top board 91 of a desk 9, and a wall part 20 extending upward from a top face of the top board 91: with the frame part 10 fitting the peripheral edge part 92 of the top board 91.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a desk auxiliary device that is attached to a desk. [Background technology]

[0002] As the use of PCs and other devices in schools increases, there have been many problems with PCs and other devices falling off desks. Therefore, as an auxiliary device for preventing the dropped object, for example, a tabletop extension device that is installed on the front long edge of the desk has been disclosed (for example, Patent Document 1). This tabletop extension device has engagement grooves on the left and right sides, and the tabletop is fitted into the engagement grooves and fixed with screws, etc. The tabletop extension device has fall prevention walls on the edges, which prevent items placed on the tabletop from falling. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-132260 Summary of the Invention [Problem to be solved by the invention]

[0004] The tabletop extension device (desk support device) described above has the problem that it is time-consuming to attach to the desk. An object of the present invention is to provide a desk auxiliary tool that prevents objects placed on it from falling off a desk and that can be easily attached to a desk. [Means for solving the problem]

[0005] The desk support device of the present invention comprises a frame portion that can be attached to and detached from the peripheral edge of the desk top, and a wall portion that extends above the upper surface of the top, and the frame portion fits into the peripheral edge of the top. [Effects of the Invention]

[0006] According to the above configuration, the object placed on the desk is prevented from falling off, and the desk can be easily attached. [Brief explanation of the drawings]

[0007] [Figure 1] 1A and 1B are perspective views for explaining a desk system according to an embodiment, in which (a) is a view from above of a desk auxiliary device attached to a desk, and (b) is a view from above of a desk auxiliary device removed from the desk. [Figure 2] 1A and 1B are perspective views of a desk support device, in which FIG. 1A is a view from above and behind, and FIG. 1B is a view from below and in front. [Figure 3] (a) is a view of the desk support device seen from above, and (b) is a view of the desk support device seen from the side. [Figure 4] 3(a) is a perspective view of the AA section of FIG. 3(a) seen from above and behind, (b) is a view of the AA section from the direction of the arrow, and (c) is a view of the BB section of FIG. 3(a) seen from the direction of the arrow. [Figure 5] This is a perspective view of two desks stacked on top of each other. [Figure 6] FIG. 10 is a cross-sectional view of the desk aid in use. [Figure 7] 1(a) is a cross-sectional view of a desk support device having a top plate, and FIG. 1(b) is a cross-sectional view of a desk support device having a wall portion and a frame portion provided separately. [Figure 8] 1A and 1B are diagrams of a desk aid with a frame having a U-shaped cross section, where (a) is a perspective view and (b) is an enlarged view of the cross section of the frame. [Figure 9] 1A and 1B are diagrams of a desk support device that can be attached by placing it over a tabletop, where (a) is a perspective view before attachment and (b) is an enlarged cross-sectional view after attachment. [Figure 10] 1A and 1B are diagrams of a desk support device made up of multiple members, in which (a) is a perspective view and (b) is a perspective view in an exploded state. [Figure 11] 1A and 1B are diagrams of a desk support device made up of multiple components, in which (a) is an enlarged cross-sectional view when attached, and (b) is a diagram for explaining how it is attached. DETAILED DESCRIPTION OF THE INVENTION

[0008] <Summary> The first desk auxiliary tool has a frame that can be attached to the peripheral edge of the desk top and a wall that extends above the upper surface of the desk top, and the frame fits into the peripheral edge of the desk top, making it easy to attach to a desk.

[0009] The second desk auxiliary tool is the first desk auxiliary tool, but the frame is provided with a lower engagement part that engages with the underside of the tabletop, thereby making it difficult for the desk auxiliary tool to come off the desk.

[0010] The desk auxiliary tool 2A is the desk auxiliary tool 1 or 2, wherein the tabletop has a rectangular shape when viewed from above, the frame portion has a rectangular frame shape corresponding to the tabletop shape, and there are at least two sets of two lower engagement portions, each set consisting of two lower engagement portions, which are provided corresponding to two corner portions on both sides of the front edge of the tabletop, with each set of two lower engagement portions sandwiching the corner portions. This makes it difficult for the corner portions of the frame portion on both sides of the front edge of the tabletop to come off the desk. The desk auxiliary tool No. 2B is the desk auxiliary tool No. 2A, in which one or more lower engagement parts are provided between two lower engagement parts arranged on the front edge of the table top, at the corners on both sides of the edge part. This prevents the middle part of the frame corresponding to the front edge part of the table top from coming off the desk. The desk auxiliary tool 2C is the desk auxiliary tool 1 or 2, in which there are four sets of lower engagement parts corresponding to the four corners of the tabletop, thereby making it difficult for all corners of the frame to come off the desk. The desk auxiliary tool No. 2D is the desk auxiliary tool No. 2C, in which one or more lower engagement parts are provided between two lower engagement parts located at the corners on both sides of each of the four sides of the tabletop, thereby preventing the middle parts of the frame corresponding to the four sides of the tabletop from coming off the desk.

[0011] The third desk auxiliary tool is the first and second (including A to D) desk auxiliary tools in which an upper engagement part that engages with the upper surface of the tabletop is provided on the frame part, thereby making it difficult for the desk auxiliary tool to slip downward from the tabletop. A 3A desk auxiliary tool is the third desk auxiliary tool, in which the upper engagement portion protrudes from the frame portion along the upper surface of the tabletop toward the inside of the tabletop, thereby making it easy to provide the upper engagement portion. The desk auxiliary tool No. 3B is the desk auxiliary tool Nos. 3 and 3A, in which the upper engagement portion is provided continuously or intermittently around the entire circumference of the frame portion, thereby making it difficult for the desk auxiliary tool to slip downward from the tabletop around the entire circumference.

[0012] The fourth desk auxiliary tool is the third (including A and B) desk auxiliary tool, in which the lower surface of the upper engagement part extends along the upper surface of the tabletop, and the upper surface of the upper engagement part has an inclined area that slopes downward as it moves to the tip in the extension direction, thereby preventing it from interfering with work on the tabletop. The desk auxiliary tool No. 4A is a desk auxiliary tool according to the third (including A and B) and fourth embodiments, in which the lower surface of the upper engagement part extends along the upper surface of the tabletop and has an inclined region that slopes upward as it moves to the tip in the extension direction. This allows the upper engagement part to hang down toward the upper surface of the tabletop due to distortion during molding, improving adhesion to the upper surface.

[0013] The fifth desk auxiliary tool is the desk auxiliary tool of the second (including A to D), third (including A and B), or fourth (including A), wherein the frame part has an inner peripheral wall facing the end face of the table top and an outer peripheral wall located on the opposite side of the inner peripheral wall from the table top, and the lower engagement part is provided on the inner peripheral wall. This makes it difficult for clothes, etc. to get caught on the lower engagement part, and also improves the appearance. The 5A desk auxiliary tool is the fifth desk auxiliary tool, and has a plurality of ribs spaced apart along the circumferential direction connecting the inner peripheral wall and the outer peripheral wall. This reinforces the desk auxiliary tool. It also makes the frame less susceptible to distortion, preventing damage such as cracks. The desk auxiliary tool of No. 5B is the desk auxiliary tool of No. 5A, wherein the lower engagement portion is provided between a pair of ribs adjacent in the circumferential direction, thereby making it easier for the lower engagement portion to elastically deform in a direction perpendicular to the circumferential direction of the frame portion of the lower engagement portion. The desk auxiliary tool No. 5C is the desk auxiliary tool No. 1, No. 2 (including A to D), No. 3 (including A and B), and No. 4 (including A), in which the frame has an inner peripheral wall facing the end face of the tabletop and an outer peripheral wall located on the opposite side of the inner peripheral wall from the tabletop, and a plurality of ribs connecting the inner peripheral wall and the outer peripheral wall are provided at intervals along the circumferential direction. This reinforces the desk auxiliary tool. In addition, the frame is less likely to warp, preventing damage such as cracks.

[0014] A sixth desk auxiliary tool is a desk auxiliary tool according to the second (including A to D), third (including A and B), fourth (including A), and fifth (including A to C) types, wherein the lower engagement part has a plate part facing the end face of the table top, a lower engagement part extending from the lower end of the plate part along the underside of the table top and abutting or coming close to the underside, and a protruding part protruding from the lower end of the plate part and the base of the lower engagement part towards the end face of the desk. This makes it possible to reduce the gap with the table top and suppress rattling. The 6A desk auxiliary is a desk auxiliary of the 3rd (including A and B), 4th (including A), 5th (including A to C), and 6th types, in which the lower surface of the lower engagement part has an inclined region that inclines in a direction approaching the lower surface of the tabletop as it approaches the extending tip. This makes it easier for the lower engagement part to deform elastically, and makes it easier to attach the desk auxiliary to the tabletop.

[0015] In a seventh desk auxiliary tool, in the first, second (including A to D), third (including A and B), fourth (including A), fifth (including A to C), and sixth (including A) desk auxiliary tools, the tabletop is rectangular when viewed from above, the frame portion has a front frame portion corresponding to the front long side of the tabletop, a rear frame portion corresponding to the rear long side of the tabletop, and a pair of left and right frame portions connecting the left and right ends of the front and rear frame portions, the wall portion has a front wall portion provided on the front frame portion and a pair of left and right wall portions provided on the pair of left and right frame portions, which are continuous along the circumferential direction of the frame portion, and the length of the pair of left and right wall portions in the direction in which the left and right frame portions of the frame portion extend is less than half the total length of the left and right frame portions. This makes it less likely to interfere with work on the tabletop and can prevent objects placed on it from falling. The 7A desk support device is a seventh desk support device in which the left and right wall portions extend upward from positions outside the direction in which the front frame portion extends from the upper surfaces of the left and right frame portions. This prevents the walls from getting in the way when the desk support devices are stacked one on top of the other, and reduces the height of the stacked devices. Furthermore, desks with desk support devices can be stacked with their tops butted against each other. Furthermore, rattles can be prevented when the desks are stacked.

[0016] The eighth desk support device is the first, second (including A to D), third (including A and B), fourth (including A), fifth (including A to C), sixth (including A), and seventh (including A) desk support devices, in which the outer surface of the front wall portion is inclined inward toward the top. This makes it possible to prevent damage to the wall portion when a load is applied. The ninth desk aid is the first, second (including A to D), third (including A and B), fourth (including A), fifth (including A to C), sixth (including A), seventh (including A), and eighth desk aids, in which the frame and wall are made of a light-transmitting material. This allows the appearance to blend in easily and makes graffiti and the like less noticeable.

[0017] A desk system comprising a desk and a desk auxiliary tool attached to the desk, The desk aids are the first, second (including A to D), third (including A and B), fourth (including A), fifth (including A to C), sixth (including A), seventh (including A), eighth, and ninth desk aids.

[0018] <Embodiment> 1. Overall structure 1, the desk system X includes a desk 9 and a desk auxiliary tool 1. In other words, the desk system X is a desk 9 with a desk auxiliary tool 1 attached thereto. The desk support tool 1 is detachably attached to a desk 9 as shown in FIGS. The tabletop 91 of the desk 9 has a quadrangular shape when viewed from above. More specifically, it has a rectangular shape. Here, the direction parallel to the short sides of the tabletop 91 is the front-rear direction, and the direction parallel to the long sides is the left-right direction. The long side facing the user is the rear side, and the long side away from the user is the front side. As shown in FIG. 6, the tabletop 91 has coating sheets 91c on the upper and lower surfaces, but it may not have a coating sheet or may have one only on the upper surface. The desk support device 1 has at least a frame portion 10 and a wall portion 20 . The frame 10 is removably fitted to a peripheral edge 92 of a desk top 91. This allows the frame 10 to be easily attached and detached by fitting it to the top 91 without using a tool such as a screwdriver. Furthermore, the wall portion 20 extends above the upper surface of the top plate 91. This makes it possible to prevent objects placed on the desk 9, such as a PC, from falling off the desk 9. As shown in Figure 1(b), the desk support device 1 is fitted by placing the frame portion 10 over the peripheral portion 92 of the top plate 91 of the desk 9 from above, and the fitted desk support device 1 can be removed by peeling it off from the corners of the top plate 91 or the middle parts of each side of the peripheral edge. The desk support device 1 will be described in detail below.

[0019] 2.Desk aids The desk support tool 1 has a frame part 10 that can be attached to and detached from a peripheral part 92 of a top board 91 of a desk 9, and a wall part 20 provided on the frame part 10. In addition to the frame 10 and the wall 20, the desk support tool 1 may also be provided with a fixing means for fixing the tool to the tabletop 91 (making it difficult to remove). The fixing structure utilizes, for example, an engagement structure, and is provided with at least one of a lower engagement part 30 that engages with the underside of the tabletop 91 and an upper engagement part 40 that engages with the upper surface of the tabletop 91. In this example, both are provided. This makes it difficult for the desk support tool 1 to be removed from the desk 9. Each part will be explained below.

[0020] (1) Frame As shown in FIG. 1(b) and FIG. 3(a), the frame portion 10 has a rectangular frame shape that is long in the left-right direction. 3(a), the frame 10 integrally comprises a front frame portion 10a corresponding to the front side (long side) of the top plate 91, a rear frame portion 10b corresponding to the rear side (long side) of the top plate 91, a right frame portion 10c corresponding to the right side (short side) of the top plate 91, and a left frame portion 10d corresponding to the left side (short side) of the top plate 91. When it is not necessary to distinguish between the frame portions, the reference numerals "10a to 10d" may be used. The corners where the frame portions 10a to 10d are connected are arc-shaped, which prevents excessive stress from concentrating on the corners and reduces damage to the corners. Here, since the frame portion 10 has a frame shape, the direction along each of the frame portions 10a to 10d is defined as the circumferential direction. As shown in Figures 2 and 4(a) and (b), the frame portion 10 has an inner wall 11 facing the end face of the top plate 91, and an outer wall 12 located on the opposite side of the inner wall 11 from the top plate 91, and the upper end of the inner wall 11 and the upper end of the outer wall 12 are connected by an upper peripheral wall 13. The frame 10 has a plurality of ribs 14 spaced apart along the circumferential direction, connecting the inner peripheral wall 11 and the outer peripheral wall 12. This makes the frame 10 less likely to deform and prevents cracks, etc. The ribs 14 are provided in a direction perpendicular to the circumferential direction and are also connected to the upper peripheral wall 13. As shown in Fig. 4, the frame 10 has grooves 15 extending in the vertical direction on the inner peripheral wall 11 of the corners where the frame portions 10a to 10d are joined. This makes it easier for the inner peripheral wall 11 to elastically deform in a direction perpendicular to the circumferential direction, making it easier to attach and detach the desk auxiliary device 1 to and from the desk 9.

[0021] (2) Wall part The wall portion 20 extends upward from the frame portion 10 as shown in FIG. The wall portion 20 has a front wall portion 21 provided in the front frame portion 10a, a right wall portion 22 provided in the right frame portion 10c, and a left wall portion 23 provided in the left frame portion 10d, which are arranged continuously or discontinuously along the circumferential direction of the frame portion 10. Here, the wall portion 20 is arranged continuously. The height of the wall portion 20 from the upper surface of the top panel 91 is 10 mm or more, preferably 15 mm or more, and preferably 23 mm or less. This makes it possible to prevent objects from falling. In particular, if the height is 15 mm or more, it becomes about the same height as a folded notebook PC, making it possible to prevent the PC from falling.

[0022] (2-1) Front wall part As shown in Figure 4(c), the front wall portion 21 extends upward from the rear side of the upper peripheral wall 13 of the front frame portion 10a. The rear surface (inner surface) 21a of the front wall portion 21 extends substantially straight upward, and the front surface (outer surface) 21b of the front wall portion 21 slopes upward and rearward (inward). This reduces contact with the upper end of a person or object and prevents the front wall portion 21 from cracking due to the impact when a person touches the upper end of the front wall portion 21.

[0023] (2-2) Left and right wall parts As shown in FIG. 3, the left and right wall portions 22, 23 are provided on the front portions of the left and right frame portions 10c, 10d. That is, as shown in FIG. 3(b), the length L1 of the left and right wall portions 22, 23 in the direction in which the left and right frame portions 10c, 10d extend (the front-to-rear direction) is less than half the total length L2 of the left and right frame portions 10c, 10d of the frame unit 10 in the front-to-rear direction. Specifically, L1 is within a range of 20 to 45%, preferably 30 to 40%, of L2. Furthermore, L1 is preferably within a range of 90 to 210 mm, preferably 160 to 180 mm. This prevents the user from using the upper surface of the tabletop 91 and prevents objects placed on it from falling in the left-to-right direction. As shown in Figures 4(a) and 4(b), the left and right wall portions 22, 23 extend upward from outer positions in the left and right direction of the left and right frame portions 10c, 10d. The left and right wall portions 22, 23 extend outward in the left and right direction from the joint between the outer peripheral wall 12 and the upper peripheral wall 13, and then extend upward. In other words, the left and right wall portions 22, 23 extend outward in the left and right direction from the frame portion 10 in an "L" shape. This allows for a wide space above the top plate 91 and prevents placed items from falling. As shown in FIG. 3(a), the horizontal distance L3 between the horizontal outer surfaces 22b, 23b of the left and right wall portions 22, 23 and the horizontal outer surface 12a of the outer peripheral wall 12 (left and right frame portions 10c, 10d) is within a range of 2 to 8 mm, preferably 4 to 6 mm. This minimizes horizontal expansion while preventing objects from falling. Furthermore, by keeping the distance within the above range, the effective area of ​​the table top 91 can be increased without reducing the number of desks 9, even if the installation location of the desks 9 (e.g., a classroom) is small. Inner surfaces 22a, 23a of the left and right wall portions 22, 23 are positioned outward in the left-right direction from outer surfaces 12a (imaginary line L4 in FIG. 4(b)) of outer peripheral walls 12 of left and right frame portions 10c, 10d. As a result, when the desk support devices 1 are stacked one on top of the other, the upper outer peripheral wall 12 fits inside the left and right wall portions 22, 23 on the lower side, thereby reducing the vertical dimension. Also, misalignment in the left and right direction can be suppressed. 5, when one desk 9B is stacked on top of the other desk 9B with the top plate 91 of the other desk 9B in contact with the top plate 91 of the other desk 9A, the walls 20A, 20B of the desk support devices 1A, 1B can be prevented from contacting each other, thereby reducing the dimensions in the front-to-back direction. In addition, the walls 20A, 20B of the desk support devices 1A, 1B can improve stability when stacked and prevent the upper desk 9B from shifting left and right and front-to-back.

[0024] (3) Lower engagement part As shown in FIG. 2, a plurality of lower engagement portions 30 are provided on the frame portion 10 along the circumferential direction. There are three or more lower engagement portions 30 for each frame portion 10a to 10d of the frame part 10, for a total of 12 or more. Here, there are three lower engagement portions 30 for each frame portion 10a to 10d: two on both sides in the extension direction of the frame portion 10a to 10d and one in the middle. The lower engagement portions (30A) at the corners prevent the frame 10 from peeling off from the portions corresponding to the corners of the top plate 91. In addition, the lower engagement portions (30B) on the middle side prevent the frame 10 from peeling off from the center of each side of the top plate 91. In Fig. 2, the lower engagement portion on the corner side is designated by the reference numeral "30A," and the lower engagement portion on the middle side is designated by the reference numeral "30B." When explaining the lower engagement portions on the corner side separately, the reference numerals are designated by adding "A" or "B." In particular, the lower engagement portions 30A on both sides in the extension direction of each of the frame portions 10a to 10d are located close to the corners of the frame portion 10 (corner portions of the top plate 91), preventing the frame portion 10 from peeling off around the corners of the top plate 91. In other words, two lower engagement portions 30A, each sandwiching one corner, form a set, and this set is arranged corresponding to at least two corners on both the left and right sides of the front side of the rectangular top plate 91. In this case, there are a total of four lower engagement portions 30A at the corners. As a result, since the front wall portion 21 is located on the front frame portion 10a of the frame portion 10, the frame portion 10 is likely to peel off if an object hits the front wall portion 21, but since one set of lower engagement portions 30A is provided at each corner on both the left and right sides, it is less likely to peel off from the top plate 91. Here, pairs of lower engagement portions 30A are provided at all four corners of the top plate 91, for a total of four pairs. Note that being close to each other means that the center line of the lower engagement portion 30A is located within 100 mm of the imaginary point C where the center lines (straight lines) C1 of the two intersecting frame portions 10a to 10d intersect, as shown in FIG. 3(a). The intermediate lower engagement portion 30B is located in the center between the two lower engagement portions 30A on both sides of the extension direction of each frame portion 10a to 10d, but there may be two on either side of the center, or three at the center and on both sides.

[0025] As shown in Fig. 4, the lower engagement portion 30 is provided on the inner peripheral wall 11 of the frame portion 10. The lower engagement portion 30 is provided on the inner peripheral wall 11 between ribs 14 that are formed at intervals in the circumferential direction. This allows the lower engagement portion 30 to be elastically deformable in a direction perpendicular to the circumferential direction of the frame portion 10, and also allows the amount of deformation to be large. As shown in Figure 6, the lower engagement portion 30 has a plate portion 31 that faces the end surface of the top plate 91, and a lower engagement portion 32 that extends from the lower end of the plate portion 31 along the underside of the top plate 91 and abuts or is close to the underside. As shown in Figure 4(a), the plate portion 31 is formed on the inner peripheral wall 11 between a pair of groove portions 34 that are adjacent in the circumferential direction. The pair of groove portions 34 extend in the vertical direction. This allows the plate portion 31 to be elastically deformable in its thickness direction, and the amount of deformation can be increased. Furthermore, this deformation makes it easier to attach the desk support device 1 to the tabletop 91. As shown in Figure 4(c), the lower surface of the lower engagement portion 32 has an inclined region 32a that slopes toward the lower surface of the tabletop 91 as it approaches the tip in the extension direction. The inclined region 32a is provided from the base to the tip. This reduces the step between the lower engagement portion 32 and the lower surface of the tabletop 91, preventing users or objects from interfering with the lower engagement portion 32. Furthermore, when attaching the desk auxiliary tool 1 to the desk 9, even if the lower engagement portion 32 is in contact with the edge surface of the tabletop 91, simply pressing the desk auxiliary tool 1 against the tabletop 91 causes the lower end of the plate portion 31 and the lower engagement portion 32 to deform outward, making it easy to attach. As shown in Figures 4(a) and (c), the lower engagement part 30 has a protruding part 33 that protrudes from the joint between the plate part 31 and the lower engagement part 32 or from the surrounding area thereof toward the end face of the table top 91. This makes it possible to reduce the space 39 between the plate part 31 and the end face of the table top 91, as shown in Figure 6, and to reduce rattling. The left and right ends of the protruding part 33 have arcuate surfaces that are recessed toward the lower engagement part 32. This allows for improved adhesion to the desk 9, which has an arcuate end face. The protruding portion 33 is formed across the lower end of the plate portion 31 and the base of the lower engaging portion 32. This reinforces the joint between the plate portion 31 and the lower engaging portion 32. In the embodiment, two protruding portions 33 are provided spaced apart along the circumferential direction of the frame portion 10, but there may be one or three or more. Furthermore, when a plurality of protruding portions 33 are provided, they may all have the same shape and size, or they may all have different shapes and sizes, or some may have different shapes and sizes.

[0026] (4) Upper engagement part 2, the upper engagement portion 40 is provided on the frame portion 10 and extends along the upper surface of the top plate 91 in a direction perpendicular to the circumferential direction of the frame portion 10 (toward the inside of the frame portion). As a result, the lower surface of the upper engagement portion 40 approaches or abuts against the upper surface of the top plate 91, and the upper engagement portion 40 engages with the top plate 91 from above. The upper engagement portion 40 is provided continuously or intermittently, here continuously, over the entire circumferential length of the frame portion 10. This allows the load acting on the upper engagement portion 40 to be distributed, and damage to the upper engagement portion 40 can be prevented. The upper engagement portion 40 protrudes inward from the joint between the inner peripheral wall 11 and the upper peripheral wall 13 of the frame portion 10. In particular, as shown in Figure 4, it extends flush with the upper surface of the upper peripheral wall 13. This makes the upper surfaces of the upper peripheral wall 13 and the upper engagement portion 40 flat, allowing for smooth movement of placed objects, etc. The upper surface 41 of the upper engagement portion 40 has an inclined region 41a that slopes downward as it moves toward the tip (inner end) in the extension direction. This makes it easy for placed objects to climb onto the upper peripheral wall 13 or the upper surface of the upper engagement portion 40, making it less likely to interfere with work or studying. As shown in Figure 4(b), the inclined region 41a is formed from the base to the tip in the left and right frame portions 10c, 10d and the rear frame portion 10b, and is formed from a position shifted from the base toward the tip in the front frame portion 10a, as shown in Figure 4(c). The lower surface 42 of the upper engagement portion 40 is designed to be a horizontal surface parallel to the upper surface of the top plate 91. This allows the contact area with the top plate 91 to be increased. The lower surface 42 of the upper engagement part 40 extends along the upper surface of the top plate 91 and has an inclined region that slopes upward as it moves to the tip in the extension direction. If a molded product of such a shape of the upper engagement part 40 is manufactured with a design that extends parallel, it will droop in front, so it is preferable to design the lower surface 42 of the upper engagement part 40 to slope upward.

[0027] (5) Material The desk support device 1 can be made of flexible resin materials such as PP (polypropylene), TPU (thermoplastic polyurethane elastomer), ABS (acrylonitrile butadiene styrene), etc., and has a frame portion 10, wall portion 20, lower engagement portion 30, and upper engagement portion 40 as a single unit (molded as a single unit by injection molding, etc.). The use of PP makes it possible to wipe with alcohol, etc., and to clean with detergent, etc., improving hygiene. The use of TPU makes it easy to elastically deform, making it easy to attach and remove. At least the frame 10 and the wall 20 of the desk support device 1 may be made of a light-transmitting material. This makes it possible to prevent a cheat sheet from getting caught between the frame 10 and the top panel 91 when the desk 9 is used at school. Furthermore, a light-transmitting material has the effect of blending in easily and making graffiti less noticeable.

[0028] Although the embodiment has been described above, the present invention is not limited to this embodiment, and the following modifications may be made, for example. Furthermore, the embodiment and the modifications may be combined, or the modifications may be combined with each other. Furthermore, examples not described in the embodiments and modifications, and design changes within the scope of the present invention are also included in the present invention.

[0029] <Modification> 1.Desk system The desk system X includes a desk 9 and a desk auxiliary tool 1, but may also include, for example, a desk 9, a desk auxiliary tool 1, and a chair. 2.Desk Although the top board 91 of the desk 9 has a rectangular shape that is long in the left-right direction when viewed from above, it may also have a rectangular shape that is long in the front-to-back direction, a square shape, a circle, or a polygonal shape with five or more sides. In addition, if it is a square shape, the side on the user side (rear side) may be shaped so that it is recessed in an arc shape toward the front. The end faces of the top plate 91 are arc-shaped and protrude outward in the left-right and front-back directions as shown in FIG. 6, but may also be linear (with chamfered or rounded corners) perpendicular to the upper and lower surfaces.

[0030] 3.Desk aids (1) Overall When viewed from above, the desk auxiliary tool 1 has a rectangular shape that is long in the left-right direction, but it may have any shape that corresponds to the tabletop 91, and the shape viewed from above may be a rectangular shape that is long in the front-to-back direction, a square shape, a circle, or a polygonal shape with five or more sides. In addition, if it is a square shape, the side facing the user (rear side) may be shaped so that it is recessed in an arc shape toward the front. The desk auxiliary tool 1 has a frame shape when viewed from above, but as shown in Fig. 7(a), it may have a top board portion 50 inside the frame portion 10. The top board portion 50 contacts or comes close to the top surface of the desk 9 from above, so it may be the upper engagement portion 40, in which case the upper engagement portion 40 may extend to the inside of the frame portion 10 and engage (face) the entire area of ​​the top board 91 of the desk 9. When the tabletop portion 50 is provided, the area of ​​the tabletop 91 can be increased by enlarging the upper peripheral wall 13 of the frame portion 10 (increasing the gap between the inner peripheral wall 11 and the outer peripheral wall 12). In this case, the function of the desk auxiliary tool is to expand the tabletop. If the wall portion 20 is provided, it also has a function to allow placed objects to fall, and if the wall portion 20 is not provided, it only has the function of expanding the tabletop.

[0031] (2) Frame (a) The frame 10 has an inner peripheral wall 11, an outer peripheral wall 12, and an upper peripheral wall 13, and has an inverted "U" shape or a similar shape that is open at the bottom in a cross section perpendicular to the circumferential direction. However, for example, the frame 10 may have a vertical peripheral wall (corresponding to one of the inner peripheral wall 11 and the outer peripheral wall 12) that extends in the up-down direction and a horizontal peripheral wall (corresponding to the upper peripheral wall 13) that extends in the horizontal direction, and may have a "T" shape, an inverted "L" shape, or a similar shape. In this case, the lower engagement portion 30 (30A, 30B) can be formed by providing a pair of groove portions 34 that extend up and down in the vertical peripheral wall, and the upper engagement portion 40 can be formed by providing a portion that extends circumferentially inward in the horizontal peripheral wall. (b) The frame 10 has multiple ribs 14 in the circumferential direction that connect the inner peripheral wall 11, the outer peripheral wall 12, and the upper peripheral wall 13, but thicker blocks may be provided instead of the plate-like ribs. Also, a solid structure without a space surrounded by the inner peripheral wall 11, the outer peripheral wall 12, and the upper peripheral wall 13 may be used. In this case, the lower engagement portion can be configured by making the portion corresponding to the lower engagement portion 30 hollow (the same structure as in the embodiment). (c) Although the frame 10 has been shaped like an inverted "U" or a similar shape with an opening at the bottom, it may be shaped like a "C" with an opening at the portion facing the end face of the tabletop 91 of the desk 9. That is, as shown in FIG. 8, the frame 110 may have an upper peripheral wall 111 extending horizontally, a lower peripheral wall 112 extending horizontally, and an outer peripheral wall 113 connecting the outer peripheral ends of the upper peripheral wall 111 and the lower peripheral wall 112, which may be integral with or separate from each other. In this case, the upper peripheral wall 111 may be the upper engaging portion, or an upper engaging portion may be provided that extends further inward in the circumferential direction from the upper peripheral wall 111. The lower peripheral wall 112 may be provided continuously in the circumferential direction, or may be provided at intervals in the circumferential direction like the lower engagement portion (30) (for example, at the position of the lower engagement portion 30 in the embodiment). When the lower peripheral wall 112 is to be engaged by facing (contacting) the underside of the top plate 91 around the entire circumferential direction, this can be achieved by making the outer peripheral wall 113 elastically deformable in a direction perpendicular to the circumferential direction, or by making the frame portion 110 elastically deformable along the circumferential direction (to increase the overall length). Examples of such easily deformable materials include resin materials with an elastic modulus of 70 MPa or less, preferably 50 MPa or less. Alternatively, for example, grooves extending in the vertical direction can be provided at the corners. (d) The inner peripheral wall 11 is provided over the entire circumferential area of ​​the frame portion 10 (including the lower engagement portion 30), but it does not have to be over the entire area. For example, in each of the frame portions 10a to 10d, the inner peripheral wall between the lower engagement portions 30A on the two corner portions and the lower engagement portion 30B on the middle side may not be present. Note that the positioning of the desk 9 relative to the top board 91 can be achieved by the inner peripheral wall 11 at the corner portions of the frame portion 10. Furthermore, from the viewpoint of preventing damage to the lower engagement portion 30, it is preferable that the inner peripheral wall 11 be present over the entire area. (e) The outer peripheral wall 12 is provided over the entire circumferential area of ​​the frame portion 10, but it does not have to be over the entire area. For example, in each of the frame portions 10a to 10d, the outer peripheral wall may be connected to the inner peripheral wall between the lower engagement portion 30A on the corner side and the lower engagement portion 30B on the middle side. In other words, in each of the frame portions 10a to 10d, there is no outer peripheral wall outside the lower engagement portion 30B on the middle side. From the viewpoint of preventing damage to the lower engagement portion 30, it is preferable to have the outer peripheral wall 12 over the entire area, since the lower engagement portion 30 will not be exposed and people or objects will not easily come into contact with the lower engagement portion 30. From the viewpoint of design, it is also preferable to have the outer peripheral wall 12 over the entire area, since the lower engagement portion 30 will be covered and will not be easily visible.

[0032] (3) Wall part (a) In the above embodiment, the wall portion 20 is provided integrally with the frame portion 10. However, as shown in FIG. 7(b), the wall portion 20 may be provided separately from the frame portion 10. In this case, the wall portion 20 has a protruding portion 29 extending downward, and this can be implemented by inserting the protruding portion 29 into the groove portion 19 in the upper peripheral wall 13 of the frame portion 10. By making the protruding portion 29 insertable into and removable from the groove portion 19, the wall portion 20 can be detachable from the frame portion 10. Note that the protruding portion may be provided on the frame portion 10, and the groove portion may be provided on the wall portion 20. Furthermore, when the frame 10 and the wall 20 are configured as separate bodies, they may be configured from the same resin or different resins. In the case of different resins, the frame may be configured from a material that is easily deformed, and the wall may be configured from a material that is less likely to deform. (b) The wall portion 20 is continuous along the circumferential direction of the frame portion 10, but may be discontinuous. In other words, the wall portions 20 may be provided at intervals in the circumferential direction. In this case, in consideration of preventing the placed object from falling, it is preferable that the intervals be 5 cm or less. (c) The height of the wall portion 20 was constant, but it may be varied in the circumferential direction. For example, the central portion of the front frame portion 10a, which corresponds to the front side of the desk 9, may be lowered, or vice versa. (d) The right and left wall portions 22 and 23 extend outward in the left-right direction from the upper peripheral wall 13 of the frame 10 and then extend upward, but they may also extend upward flush with the outer surface of the peripheral wall 12. In this case, it is not possible to stack the desk support devices 1 vertically, or to invert the desks 9 with the desk support devices 1 and stack them as shown in Figure 5. However, by reducing the width of the right frame portion 10c and the left frame portion 10d on the left and right sides of the frame 10 that do not have the wall portion 20, it is possible to stack them.

[0033] (4) Lower engagement part The lower engagement portions 30A, 30B may have the same or different circumferential widths. For example, the lower engagement portion 30B located in the middle of the circumferential direction of each frame portion 10a to 10d may have a larger circumferential length (width) than the lower engagement portions 30A located at the corners. Furthermore, when two or more middle lower engagement portions 30B are provided for each frame portion 10a to 10d, the width of the lower engagement portions 30B may be smaller than that of the lower engagement portions 30A.

[0034] (5) Other (a) The desk auxiliary tool 1 has the lower engagement part 30, but it may not have this, as shown in Fig. 9. Below, a desk auxiliary tool 201 that does not have a lower engagement part will be described. The desk support tool 201 has at least a frame portion 210. The frame portion 210 has a shape that follows the peripheral edge of the table top 91, and has a peripheral wall 211 that extends along the entire length of the peripheral edge of the table top 91. The desk support tool 201 has an upper engagement part 240 that extends from the upper end of the frame part 210 to the inside of the table top 91 and engages with the upper surface of the table top 91. The upper engagement part 240 is provided around the entire periphery of the table top 91. Since the desk auxiliary tool 201 has a frame part 210 and an upper engagement part 240, the desk auxiliary tool 201 can be attached to the top board 91 by placing it on the top board 91 from above, as shown in Fig. 9(a). In addition, since the desk auxiliary tool 201 has the upper engagement part 240, it is possible to prevent the desk auxiliary tool 201 from slipping downward from the top board 91. The desk auxiliary tool 201 may have a wall portion 220 in the frame portion 210 that extends above the upper surface of the top board 91. This can prevent an object from falling off the top board 91. If the wall portion 220 is not provided and the upper surface of the frame portion 210 is wide, the desk auxiliary tool may extend the top board 91. Here, the wall portion 220 has a front wall portion 221, a right wall portion 222, and a left wall portion 223. The lengths of the left and right wall portions 222, 223 are equal to or less than half the overall length of the frame portions of the frame portion 210 located on the left and right. The upper engaging portion 240 and the wall portion 220 may have the same configuration as the upper engaging portion 40 and the wall portion 20 of the embodiment, or may have a different configuration.

[0035] (b) The desk auxiliary device 1 is configured so that the total circumferential length of the frame portion 10 is greater than the total circumferential length of the tabletop 91 of the desk 9, and when the frame portion 10 is fitted into the tabletop 91, the lower engagement portion 30 and the upper engagement portion 40 engage with the tabletop 91. However, for example, the overall length of the frame may be shorter than the overall length of the tabletop. In this case, the frame 10 may be made of a material that is easily deformed, and the frame may be expanded in a direction perpendicular to the circumferential direction toward the opposite side of the tabletop or stretched along the circumferential direction during installation. Such a material that is easily deformed may be a resin material with an elastic modulus of 70 MPa or less, preferably 50 MPa or less.

[0036] (c) The desk support tool 1 is made up of one member, but as shown in FIGS. 10 and 11, it may be made up of multiple members. Here, an example will be described in which a desk auxiliary tool having a shape as shown in FIG. 8 is configured by two members. Desk support tool 301 is made of resin, such as PP (polypropylene), TPU (thermoplastic polyurethane elastomer), or ABS (acrylonitrile butadiene styrene). Desk support tool 301 includes first support tool 301A, second support tool 301B, and shape maintainer 350. Here, the two components are arranged in the front-to-back direction, with first support tool 301A located at the front and second support tool 301B located at the rear, but they may also be arranged in the left-to-right direction. Furthermore, if the desk support tool is square as a whole, it may be made up of four components corresponding to each side. The configuration related to the first auxiliary device will be given the name "first" and the symbol "A", and the configuration related to the second auxiliary device will be given the name "second" and the symbol "B". The first auxiliary tool 301A has at least a first frame portion 310A. The first frame portion 310A has a shape that follows the peripheral edge of the front portion of the table top 91, and has a first peripheral wall 311A ​​along the entire length of the peripheral edge of the front portion of the table top 91.

[0037] The first auxiliary tool 301A has a first upper engagement portion 340A that extends from the upper end of the first frame portion 310A toward the inside of the top plate 91 and engages with the upper surface of the top plate 91. The first upper engagement portion 340A is provided around the entire periphery of the front part of the top plate 91. The second auxiliary tool 301B has at least a second frame portion 310B. The second frame portion 310B has a shape that follows the peripheral edge of the rear portion of the top panel 91, and has a second peripheral wall 311B along the entire length of the peripheral edge of the rear portion of the top panel 91. The second auxiliary tool 301B has a second upper engagement portion 340B that extends from the upper end of the second frame portion 310B toward the inside of the top plate 91 and engages with the upper surface of the top plate 91. The second upper engagement portion 340B is provided around the entire periphery of the rear portion of the top plate 91. The shape maintainer 350 maintains the state in which the first auxiliary tool 301A and the second auxiliary tool 301B are attached to the table top 91. The shape maintainer 350 is configured, for example, with an elastic band or belt. The shape maintainer 350 can maintain the shape (form) of the desk auxiliary tool 301 attached to the table top 91 by restraining the first auxiliary tool 301A and the second auxiliary tool 301B from the outer periphery. The shape maintainer 350 fits into the groove portions 313A, 313B of the first frame portion 310A and the second frame portion 310B. This makes it difficult for the shape maintainer 350 to come off the first and second frame portions 310A, 310B.

[0038] To attach the desk auxiliary tool 301 to the tabletop 91, as shown in FIG. 11(b), the rear ends of the left and right frame portions of the first frame portion 310A are aligned with the front ends of the left and right edges of the tabletop 91, and the first auxiliary tool 301A is slid backward. Similarly, the front ends of the left and right frame portions of the second frame portion 310B are aligned with the rear ends of the left and right edges of the tabletop 91, and the second auxiliary tool 301B is slid forward. Then, the shape maintainer 350 is extended and fitted into the grooves 313A and 313B of the first auxiliary tool 301A and the second auxiliary tool 301B. This allows the desk auxiliary tool 301 to be attached to the tabletop 91. The first auxiliary tool 301A may have a wall portion 320 in the first frame portion 310A that extends above the upper surface of the top plate 91. This can prevent an object from falling off the top plate 91. The length in the front-to-rear direction of the left and right wall portions of the wall portion 320 is preferably equal to or less than half the total length of the first frame portion 310A and the second frame portion 310B located on the left and right. The first auxiliary tool 301A and the second auxiliary tool 301B have a lower engagement portion 330 that engages with the lower surface of the table top 91. This makes it possible to prevent the desk auxiliary tool 301 from shifting upward from the table top 91. The first and second upper engagement portions 340A, 340B and the wall portion 320 may have the same configuration as the upper engagement portion 40 and the wall portion 20 of the embodiment, or may have a different configuration. Moreover, the upper engaging portion 340 and the lower engaging portion 330 of the desk auxiliary tool 301 may be configured as an upper peripheral wall and a lower peripheral wall, as in the desk auxiliary tool 101 shown in FIG. [Explanation of symbols]

[0039] 1 Desk auxiliary part 9 desk 10 Frame 20 Wall 30 Lower engagement part 40 upper engagement portion X Desk System

Claims

1. A detachable frame part attached to the periphery of the desk top, a wall portion extending above an upper surface of the top plate; Equipped with The frame portion is fitted to the peripheral edge portion of the top plate. Desk aid.

2. A lower engagement portion that engages with the lower surface of the top plate is provided on the frame portion. The desk aid according to claim 1.

3. An upper engagement portion that engages with the upper surface of the top plate is provided on the frame portion.

3. The desk aid according to claim 1 or 2.

4. a lower surface of the upper engagement portion extending along an upper surface of the top plate; The upper surface of the upper engagement portion has an inclined region that inclines downward as it moves toward the tip in the extension direction. The desk aid according to claim 3.

5. the frame portion has an inner peripheral wall facing the end surface of the top plate and an outer peripheral wall located on the opposite side of the inner peripheral wall from the top plate, The lower engagement portion is provided on the inner circumferential wall. The desk aid according to claim 2.

6. The lower engagement portion has a plate portion facing the end surface of the tabletop, a lower engagement portion extending from a lower end of the plate portion along the underside of the tabletop and abutting or coming close to the underside, and a protruding portion protruding from the lower end of the plate portion and a base of the lower engagement portion toward the end surface of the desk. The desk aid according to claim 2.

7. The top plate has a rectangular shape when viewed from above, The frame portion has a front frame portion corresponding to the front long side of the tabletop, a rear frame portion corresponding to the rear long side of the tabletop, and a pair of left and right frame portions connecting left and right end portions of the front frame portion and the rear frame portion, the wall portion has a front wall portion provided in the front frame portion and a pair of left and right wall portions provided in the pair of left and right frame portions, which are continuous along a circumferential direction of the frame portion, The length of the pair of left and right wall portions in the direction in which the left and right frame portions of the frame portion extend is equal to or less than half of the total length of the left and right frame portions. The desk aid according to claim 3.

8. A desk system comprising a desk and a desk auxiliary tool attached to the desk, The desk aid is the desk aid according to claim 1. Desk system.

Images