Top plate-equipped utensil

Abstract

To provide top plate-equipped utensil capable of changing a mode of the top plate by a simple method according to a request.SOLUTION: A top plate-equipped utensil according to an aspect of the present invention includes a base top plate on which a first work surface having a support surface facing upward and a positioning surface rising upward from the support surface is formed, and an optional top plate having a second work surface that is different from the first work surface in at least one of a material, a color, and a texture. The optional top plate is switchable between a first mode in which the optional top plate is removed from the base top plate and a second mode in which the optional top plate is placed on the first work surface. In the second aspect, the optional top plate is restricted from moving with respect to the base top plate by coming into contact with the positioning surface.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a fixture with a top. [Background technology]

[0002] Various facilities such as offices and public facilities are equipped with furniture with work surfaces to provide users with a work surface (see, for example, Patent Document 1 below). Furniture with work surfaces includes a support structure that rests on the floor, and a work surface facing upward and supported from below by the support structure. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 7272929 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, when it comes to furniture with a tabletop, there is a demand for the ability to change the appearance of the tabletop to suit the work purpose, facility environment, user mood, and the like. However, in conventional fixtures with tabletops, changing the shape of the tabletop requires changing the entire tabletop itself, which increases manufacturing costs. Also, because the tabletop is fixed to the support structure by means of screws or welding, replacing the tabletop while it is in use is difficult due to the complicated replacement work.

[0005] The present invention provides a furniture unit with a top whose top configuration can be easily changed according to demand. [Means for solving the problem]

[0006] In order to solve the above problems, the present invention employs the following aspects. (1) A fixture with a top according to one embodiment of the present invention comprises a base top on which a first work surface is formed, the first work surface having an upward-facing support surface and a positioning surface rising upward from the support surface, and an optional top which differs from the first work surface in at least one of material, color, and texture and has a second work surface facing upward. The fixture is switchable between a first embodiment in which the optional top is detached from the base top, and a second embodiment in which the optional top is placed on the first work surface with at least a portion of the underside of the optional top supported by the support surface. In the second embodiment, the optional top abuts the positioning surface in a cross direction that intersects the vertical direction, thereby restricting movement of the optional top in the cross direction relative to the base top.

[0007] According to this aspect, by placing an optional tabletop on the first work surface of the base tabletop, which has at least one of a material, color, and texture different from the base tabletop (first work surface), a tabletop-equipped furniture unit with a work surface tailored to the user's needs can be provided. In this case, the tabletop configuration can be changed through simple operations without changing the entire tabletop. Furthermore, since the base tabletop and the support structure themselves are used as common components, and the configuration of the tabletop-equipped furniture unit can be changed by changing only the optional tabletop, an environmentally friendly product can be provided at low cost. In particular, the optional tabletop is restricted from moving relative to the base tabletop by contacting the positioning surface in a direction intersecting the vertical direction, which prevents the optional tabletop from shifting relative to the base tabletop in the second mode, thereby improving the usability of the optional tabletop in the second mode.

[0008] (2) In the fixture with a tabletop according to the aspect (1) above, it is preferable that the fixture is provided with a plurality of optional tabletops that differ from each other in at least one of material, color, and texture, and in the second aspect, at least one optional tabletop from among the plurality of optional tabletops can be selectively placed on the first work surface. According to this aspect, in the second aspect, an optional tabletop selected from a plurality of optional tabletops can be placed on the first work surface, making it easier to reflect the user's needs more appropriately. Also, if the user has a plurality of optional tabletops, they can easily change the optional tabletop as needed, for example, depending on their mood that day or changes in the layout of the facility.

[0009] (3) In the fixture with a top according to the above aspect (1) or (2), it is preferable that the positioning surface rises upward from the entire outer periphery of the support surface. According to this aspect, the optional tabletop can be positioned relative to the base tabletop in both the front-rear and left-right directions, thereby preventing misalignment of the optional tabletop and improving usability.

[0010] (4) In the fixture with a tabletop according to any one of the above aspects (1) to (3), it is preferable that the first work surface extends from the upper end of the positioning surface in a direction away from the support surface and has a bulging surface facing upward. According to this aspect, when using the tabletop-equipped furniture in the second aspect, for example, the bulging surface and the second work surface can be used as a shared work surface, and the entire bulging surface and the second work surface can be used for work. Furthermore, of the shared work surface, the work performed on the bulging surface and the work performed on the second work surface can be differentiated depending on the work purpose, etc. As a result, usability can be improved.

[0011] (5) In the fixture with a tabletop according to the above aspect (4), it is preferable that the bulging surface is continuous with the entire circumference of the positioning surface and is formed in a frame shape that surrounds the periphery of the support surface when viewed from the top and bottom. According to this aspect, when, for example, gripping the edge of the base top to move the tabletop-equipped furniture of the first aspect, the bulging surface of the base top can be used as a gripping area, making it easier to carry the tabletop-equipped furniture.

[0012] (6) In the fixture with a top according to either of the above aspects (4) or (5), in the second aspect, it is preferable that the second work surface and the bulging surface are positioned at the same height. According to this aspect, in the second aspect, it is possible to prevent a step from occurring between the second work surface and the bulging surface, thereby preventing items from getting caught between the second work surface and the bulging surface, and allowing the entire upper surface of the tabletop unit to be widely used as a shared work surface.

[0013] (7) In the fixture with a top according to any one of the above aspects (1) to (6), in the second aspect, it is preferable that the entire underside of the optional top is supported from below by the support surface. According to this aspect, in the second aspect, the optional top plate can be stably supported by the base top plate. [Effects of the Invention]

[0014] According to each of the above aspects, the form of the top plate can be changed in a simple manner according to demand. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a perspective view showing a first mode of a tabletop unit for a tabletop-equipped fixture according to an embodiment. [Figure 2] FIG. 10 is a perspective view showing a second mode of the tabletop unit of the tabletop-equipped fixture according to the embodiment. [Figure 3] FIG. 2 is an exploded perspective view of the top plate unit according to the first embodiment. [Figure 4] FIG. 2 is a cross-sectional view of the top plate unit according to the first embodiment. [Figure 5] FIG. 10 is a cross-sectional view of a top plate unit according to a modified example. [Figure 6] FIG. 10 is a cross-sectional view of a top plate unit according to a second embodiment. [Figure 7] FIG. 10 is a plan view of a top plate unit according to a modified example. [Figure 8] FIG. 10 is a plan view of a top plate unit according to a modified example. [Figure 9]FIG. 10 is a plan view of a top plate unit according to a modified example. [Figure 10] FIG. 10 is a plan view of a top plate unit according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0016] Next, an embodiment of the present invention will be described with reference to the drawings. In the embodiments and modifications described below, corresponding components may be designated by the same reference numerals, and a description thereof may be omitted. In the following description, expressions indicating relative or absolute arrangements, such as "parallel," "orthogonal," "center," and "coaxial," not only strictly refer to such arrangements, but also refer to a state in which there is a relative displacement with an angle or distance to the extent that tolerances or the same function are obtained. In this embodiment, "facing" does not only refer to a case in which the orthogonal directions (normal directions) of two surfaces are aligned with each other, but also includes a case in which the orthogonal directions intersect with each other.

[0017] [Fixture with tabletop 1] Fig. 1 is a perspective view of a tabletop-equipped furniture 1 showing a first embodiment of a tabletop unit 11. Fig. 2 is a perspective view of a tabletop-equipped furniture 1 showing a second embodiment of a tabletop unit 11. The tabletop-equipped fixture 1 shown in Figures 1 and 2 is a desk device installed in various facilities. The tabletop-equipped fixture 1 comprises a support structure 10 and a tabletop unit 11. In the following explanation, the direction perpendicular to the floor surface F is defined as the up-down direction, and the two directions perpendicular to the up-down direction are defined as the left-right direction and the front-rear direction.

[0018] <Support structure 10> The support structure 10 is placed on a floor surface F and supports the tabletop unit 11 from below. The support structure 10 has a pair of left and right leg bodies 20. Each leg body 20 is formed in a rectangular frame shape when viewed from the left and right. Specifically, each leg body 20 is configured such that the front ends and rear ends of a lower rod 20a and an upper rod 20b facing each other in the vertical direction are connected to each other by a pair of front and rear connecting rods 20c. Each leg body 20 is grounded to the floor surface F via an adjuster 21 provided at the lower end of the connecting rod 20c. Note that the leg body 20 is not limited to a frame shape, and may be a panel shape or a column shape. Furthermore, the position and number of the leg bodies 20 can be changed as appropriate.

[0019] <Top Unit 11> The top plate unit 11 is supported by the support structure 10 with the thickness direction being the up-down direction. The top plate unit 11 is formed in a rectangular shape in a plan view (viewed from the up-down direction) with the longitudinal direction being the left-right direction and the lateral direction being the short side direction. The top plate unit 11 includes a base top plate 30 and an optional top plate 31. The top plate unit 11 of this embodiment is switchable between a first state (see FIG. 1) in which the optional top plate 31 is detached from the base top plate 30, and a second state (see FIG. 2) in which the optional top plate 31 is placed on the base top plate 30.

[0020] <Base top plate 30> The base top panel 30 constitutes the outer shape of the top panel unit 11 in a plan view. That is, the base top panel 30 is formed in a rectangular shape having the same outer shape as the top panel unit 11 in a plan view and also functions as a strength member of the top panel unit 11. The base top panel 30 is formed as a hollow plate with its thickness extending vertically, for example, by combining plates made of pressed metal or the like into a box shape. The base top panel 30 may be formed from a material other than metal, or the same material may be used but with its color or texture appropriately changed. In this case, materials used for the base top panel 30 include wood, wood-based materials (e.g., particle board), synthetic resin materials, glass, etc., in addition to metal materials. In this embodiment, "texture" refers to visual or tactile sensations, such as gloss, pattern, and feel.

[0021] The base top plate 30 is spanned between the upper rods 20b of each leg body 20. The base top plate 30 is fixed to each leg body 20 by fastening the undersides of both left and right ends to the upper rods 20b with fastening members such as screws. The base top plate 30 and the support structure 10 constitute the furniture main body 100. The base top plate 30 may also be fixed to each leg body 20 by welding or the like so that it cannot be removed.

[0022] 3 is an exploded perspective view of the top board unit 11. FIG. 3 and 4, the top surface of the base top plate 30 is the surface (hereinafter referred to as the first working surface 50) of the outer surface of the base top plate 30 that is exposed above the base top plate 30 in the first mode. In the cross-sectional view shown in FIG. 4, the first working surface 50 is formed in a stepped shape in which the outer periphery bulges upward relative to the center. Specifically, the first working surface 50 includes a support surface 50a, a positioning surface 50b, and a bulging surface 50c.

[0023] The support surface 50a is located in the center of the first work surface 50. In a plan view, the support surface 50a is formed, for example, in a rectangular shape similar to the shape of the base top plate 30. The support surface 50a faces upward and is a smooth surface that extends horizontally (linearly in the front-to-back and left-to-right directions). The proportion of the area of ​​the support surface 50a to the entire area of ​​the first work surface 50 can be changed as appropriate.

[0024] The positioning surface 50b rises upward from the entire outer periphery of the support surface 50a. Therefore, in a plan view, the positioning surface 50b surrounds the entire periphery of the support surface 50a. In the cross-sectional view shown in Figure 4, the positioning surface 50b extends linearly in the vertical direction.

[0025] As shown in Figures 3 and 4, the bulging surface 50c forms the outer peripheral portion of the first work surface 50. The bulging surface 50c extends from the upper edge of the positioning surface 50b in a direction away from the support surface 50a in a plan view. The outermost portion of the bulging surface 50c forms the outer peripheral edge of the first work surface 50 (base top plate 30). In a plan view, the bulging surface 50c has a predetermined width from the upper edge of the positioning surface 50b and extends in a strip shape along the upper edge of the positioning surface 50b. In the cross-sectional view shown in Figure 4, the bulging surface 50c faces upward and is formed as a smooth surface that extends horizontally (linearly in the front-to-back and left-to-right directions).

[0026] The bulging surface 50c is continuous with the entire periphery of the positioning surface 50b. Therefore, the bulging surface 50c is formed in a frame shape that surrounds the entire periphery of the positioning surface 50b. In the illustrated example, the area of ​​the bulging surface 50c is smaller than the area of ​​the support surface 50a.

[0027] In the first working surface 50, the portion surrounded by the support surface 50a and the positioning surface 50b forms a recess 51 that is recessed downward relative to the bulging surface 50c. Meanwhile, in the first working surface 50, the positioning surface 50b and the bulging surface 50c form a protrusion 52 that bulges upward relative to the support surface 50a.

[0028] <Optional Top Panel 31> The optional top plate 31 is configured to be able to be placed on at least the support surface 50a of the first work surface 50. That is, in the second mode shown in Fig. 2, the optional top plate 31 is placed on the first work surface 50 to form the top plate unit 11 together with the base top plate 30. Details of the optional top plate 31 will be described below using the second mode as an example.

[0029] As shown in Figures 3 and 4, the optional top plate 31 is formed in a plate-like shape with a thickness equivalent to the height T of the protrusion 52 (the vertical dimension from the support surface 50a to the bulging surface 50c). The optional top plate 31 is formed in a rectangular shape with a planar outer shape corresponding to the support surface 50a. The optional top plate 31 is fitted into a portion (recess 51) of the first work surface 50 surrounded by the protrusion 52. In other words, the optional top plate 31 is surrounded on its entire periphery by the protrusion 52. The thickness of the optional top plate 31 may be different from the height T of the protrusion 52.

[0030] 4, the lower surface 31a of the optional top plate 31 is a smooth surface that extends horizontally. The optional top plate 31 is supported from below by the support surface 50a with the entire lower surface 31a in contact with the support surface 50a.

[0031] The outer peripheral surface 31b of the optional top plate 31 extends linearly in the vertical direction in a cross-sectional view. The outer peripheral surface 31b of the optional top plate 31 faces the positioning surface 50b in a state of being close to or in contact with the positioning surface 50b in a direction intersecting the vertical direction. The outer peripheral surface of the optional top plate 31 abuts against the positioning surface 50b, thereby restricting movement of the optional top plate 31 relative to the base top plate 30 in a direction intersecting the vertical direction.

[0032] The upper surface of the optional top panel 31 (the surface facing upward when supported by the support surface 50a) constitutes the second work surface 31c. The second work surface 31c faces upward and is formed as a smooth surface extending horizontally (linearly in the front-to-back and left-to-right directions). In the second embodiment, the second work surface 31c is disposed at the same height as the bulging surface 50c. Therefore, the second work surface 31c constitutes the shared work surface 60 together with the bulging surface 50c.

[0033] The optional top 31 differs from the base top 30 in at least one of material, color, and texture. Materials used for the optional top 31 include, for example, metal materials, synthetic resin materials, wood, wood-based materials, glass, as well as nonwoven fabrics, woven fabrics, and rubber materials. The different textures between the base top 30 and the optional top 31 can be selected appropriately, such as being transparent while the base top 30 is opaque, being elastically deformable while the base top 30 has rigidity as a strength member, or being insulating while the base top 30 has conductivity. Preferably, for the tabletop-equipped fixture 1, multiple types of optional tops 31 differing from each other in at least one of material, color, and texture are prepared in advance.

[0034] The optional top panel 31 may have at least one of the material, color, and texture of the portion constituting the second work surface 31c different from the portion of the base top panel 30 constituting the first work surface 50. That is, the optional top panel 31 may have the second work surface 31c formed by covering a base material made of the same material as the base top panel 30 with a covering material made of a different material from the base top panel 30. In this case, the optional top panel 31 may have a configuration in which a base material made of a metal material is covered with a decorative sheet (covering material) made of melamine resin or the like.

[0035] Next, how to use the fixture with tabletop 1 will be explained. The furniture unit with a top 1 of this embodiment can be switched between a first mode and a second mode depending on whether or not an optional top 31 is placed on the base top 30. In the first mode shown in FIG. 1 , the optional top 31 is detached from the base top 30, exposing the entire first work surface 50. In the first mode, a user of the tabletop-equipped furniture 1 can use the entire first work surface 50 for work. In this case, the user may use only the support surface 50a or the bulging surface 50c of the first work surface 50, or may use the entire portion extending from the support surface 50a to the bulging surface 50c. In particular, because the base top 30 requires rigidity as a strength member, the first work surface 50 is formed of a harder material than the optional top 31 (second work surface 31c). Therefore, the first mode is suitable for tasks requiring a smooth, hard work surface, such as writing.

[0036] To switch from the first mode to the second mode shown in FIG. 2, one of the optional top panels 31 that meets the user's needs is selected from among a plurality of types of optional top panels 31 that are prepared in advance.

[0037] In this embodiment, the "request" may be the purpose of work, the facility environment, the user's mood, or the like. Examples of optional top boards 31 (second work surfaces 31c) that can be selected in consideration of the work application are as follows. For writing work, the smooth and hard optional top plate 31 is preferred. For stamping and cutting work, the optional top plate 31 is preferred because it has elasticity to absorb shock and prevent scratches. For work using electronic devices, an optional top panel 31 having insulating properties is preferred to suppress the flow of electricity to the top panel unit 11.

[0038] As for the facility environment, the optional tabletop 31 is selected taking into consideration the atmosphere and area of ​​the facility. As for the user's mood, the optional top panel 31 is selected in consideration of the user's mood on that day, the user's preferences, and the like.

[0039] Next, the optional top panel 31 selected according to the user's needs is placed on the first work surface 50. Specifically, the optional top panel 31 is fitted into the recess 51. Then, the optional top panel 31 is housed in the recess 51 with the lower surface 31a supported on the support surface 50a and surrounded by the protrusions 52. This completes the switch from the first position to the second position.

[0040] In the second mode, the user can perform work using the second work surface 31c set as desired. In addition, in this embodiment, the bulging surface 50c of the first work surface 50 is arranged around the second work surface 31c. Therefore, the bulging surface 50c and the second work surface 31c can be used as a shared work surface 60, allowing the entire upper surface of the tabletop unit 11 to be used for work. In this case, the work performed on the bulging surface 50c and the work performed on the second work surface 31c of the shared work surface 60 can be differentiated depending on the work purpose, etc. This improves usability. Furthermore, if a transparent material is used for the optional tabletop 31, notes and other items sandwiched between the support surface 50a and the optional tabletop 31 can be viewed through the optional tabletop 31.

[0041] In this way, the display unit with a top 1 of this embodiment is configured to be switchable between a first mode in which the optional top 31 is detached from the base top 30 and work can be performed on the first work surface 50, and a second mode in which the optional top 31 is placed on the first work surface 50 and work can be performed on at least the second work surface 31c. According to this configuration, by placing an optional top 31 that is different from the base top 30 (first work surface 50) in at least one of material, color, and texture, on the first work surface 50 of the base top 30, it is possible to provide a furniture fixture with a top 1 that has a work surface that meets the user's needs. In this case, the configuration of the top unit 11 can be changed through simple work without changing the top unit 11 itself. Furthermore, since the configuration of the furniture fixture with a top 1 can be changed by changing only the optional top 31 while using the base top 30 and the support structure 10 (furniture main body 100) as common components, it is possible to provide an environmentally friendly product at low cost.

[0042] In particular, in the second mode of the fixture 1 with a top plate of this embodiment, the optional top plate 31 is configured to abut against the positioning surface 50b in a direction intersecting the vertical direction (intersecting direction), thereby restricting movement relative to the base top plate 30. According to this configuration, in the second mode, it is possible to prevent the optional top plate 31 from shifting in position relative to the base top plate 30. This makes it possible to improve the usability of the optional top plate 31 in the second mode.

[0043] The fixture with a top panel 1 of this embodiment is configured to include a plurality of optional top panels 31 that differ from one another in at least one of material, color, and texture. According to this configuration, in the second mode, an optional tabletop 31 selected from a plurality of types of optional tabletops 31 can be placed on the first work surface 50, making it easier to more appropriately reflect the user's needs. Furthermore, if the user has a plurality of types of optional tabletops 31, it is possible to easily change the optional tabletop 31 as needed, for example, depending on the user's mood that day or changes in the layout of the facility.

[0044] In the furniture 1 with a top panel of this embodiment, the positioning surface 50b is configured to rise upward from the entire outer periphery of the support surface 50a. According to this configuration, the optional top plate 31 can be positioned in both the front-rear and left-right directions relative to the base top plate 30. This makes it possible to prevent the optional top plate 31 from shifting out of position, improving usability.

[0045] In the tabletop-equipped furniture 1 of this embodiment, the bulging surface 50c is continuous with the entire periphery of the positioning surface 50b and is formed in a frame shape surrounding the periphery of the support surface 50a in a plan view. According to this configuration, for example, when gripping the edge of the base top 30 to move the first embodiment of the tabletop-equipped furniture 1, the bulging surface 50c can be used as a gripping area for the base top 30. This makes it easy to carry the tabletop-equipped furniture 1. Furthermore, when an optional member such as a monitor stand is fixed to the base top plate 30 with a clamp, the bulging surface 50c can be used as a contact surface with which the clamp comes into contact, thereby enabling the optional member to be stably supported. Furthermore, by forming a bulging surface 50c with a certain area on the outer periphery of the base top plate 30, it is easy to ensure a contact area between the user's arms, etc. and the outer periphery of the base top plate 30. This reduces the load on the user's arms, etc., and allows the tabletop-equipped furniture unit 1 to be used comfortably.

[0046] In the second mode, the tabletop-equipped furniture 1 of this embodiment is configured so that the second work surface 31c and the bulging surface 50c are disposed at the same height. According to this configuration, in the second mode, it is possible to prevent a step from occurring between the second work surface 31c and the bulging surface 50c, thereby preventing items from getting caught between the second work surface 31c and the bulging surface 50c, and allowing the entire upper surface of the tabletop unit 11 to be widely used as the shared work surface 60.

[0047] Furthermore, by setting the thickness of the second work surface 31c to at least the height T of the bulging surface 50c or less, the entire periphery of the outer peripheral surface 31b of the optional top panel 31 comes into close proximity to or contacts the positioning surface 50b over the entire vertical area. This more reliably prevents the optional top panel 31 from shifting position relative to the base top panel 30. Furthermore, if the thickness of the second work surface 31c is made thinner than the height T of the bulging surface 50c, a portion of the positioning surface 50b will protrude above the second work surface 31c. In this case, the portion of the positioning surface 50b that protrudes above the second work surface 31c functions as a fall prevention device. In other words, an item placed on the optional top panel 31 (second work surface 31c) will be caught on the positioning surface 50b, preventing the item from falling from the top panel unit 11.

[0048] In the second mode of the tabletop-equipped furniture 1 of this embodiment, the entire lower surface of the optional tabletop 31 is supported from below by the support surface 50a. According to this configuration, in the second mode, the optional top plate 31 can be stably supported by the base top plate 30.

[0049] In the first embodiment described above, the positioning surface 50b and the outer peripheral surface 31b are each formed linearly extending in the vertical direction, but this configuration is not limited thereto. For example, as shown in Fig. 5, the positioning surface 50b may be inclined upward in a direction away from the support surface 50a, and the outer peripheral surface 31b may also be inclined in accordance with the positioning surface 50b. With this configuration, when switching from the first position to the second position, the outer peripheral surface 31b is guided downward along the positioning surface 50b, making it easier to fit the optional top panel 31 into the recess 51.

[0050] In the first embodiment described above, a configuration in which one optional top plate 31 is fitted into the recess 51 has been described, but the present invention is not limited to this configuration. A plurality of optional top plates 31 may be arranged in the recess 51 in a spread manner.

[0051] (Second embodiment) Fig. 6 is a cross-sectional view of a top board unit 11 according to a second embodiment, corresponding to Fig. 4. This embodiment differs from the first embodiment described above in that in the second mode, the optional top board 31 entirely covers the first work surface 50. In the tabletop unit 11 shown in FIG. 6, the lower surface 31a of the optional tabletop 31 (the surface located opposite the second work surface 31c) has a first opposing surface 200, a restricting surface 201, and a second opposing surface 202.

[0052] The first opposing surface 200 is located in the center of the lower surface 31a in a plan view. The first opposing surface 200 faces the support surface 50a in the up-down direction. Specifically, the entire first opposing surface 200 is in contact with the support surface 50a and is supported from below by the support surface 50a. The restricting surface 201 rises upward from the outer peripheral edge of the first opposing surface 200. The restricting surface 201 faces the positioning surface 50b in a state of being close to or in contact with the positioning surface 50b in a direction intersecting the up-down direction.

[0053] The second opposing surface 202 is a surface of the lower surface 31a that is located on the outer periphery in a plan view. The second opposing surface 202 is located above the first opposing surface 200 and is formed in a frame shape that surrounds the entire periphery of the first opposing surface 200 in a plan view. The second opposing surface 202 faces the bulging surface 50c in the up-down direction. Specifically, the entire second opposing surface 202 is in contact with the bulging surface 50c and is supported from below by the bulging surface 50c.

[0054] In the second mode of the tabletop-equipped fixture 1 of this embodiment, the optional tabletop 31 covers the entire first work surface 50 from above. This allows the entire upper surface of the tabletop unit 11 to function as the second work surface 31c in the second mode. Furthermore, the tabletop-equipped fixture 1 of the second embodiment can be realized by simply changing the shape of the optional tabletop 31 while using the fixture main body 100 itself as a common component with the first embodiment. This makes it possible to provide environmentally friendly products at low cost.

[0055] (Other variations) Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments. Addition, omission, substitution, and other modifications of the configuration are possible without departing from the spirit of the present invention. The present invention is not limited by the above description, but is limited only by the appended claims. In the above-described embodiment, a desk has been used as an example of the tabletop-equipped fixture 1, but the present invention is not limited to this configuration. The tabletop-equipped fixture according to the present invention can be used in various types of fixtures that have a tabletop, such as shelves and cart devices. In the above-described embodiment, the top plate unit 11 is configured to be rectangular in plan view, but this is not limiting. The top plate unit 11 may have any suitable shape in plan view, such as a polygonal shape other than a rectangle, a circular shape, or an elliptical shape (see FIG. 7). In the above-described embodiment, the first work surface 50 includes the support surface 50a, the positioning surface 50b, and the bulging surface 50c, but the present invention is not limited to this configuration. The first work surface 50 may include at least the support surface 50a and the positioning surface 50b. In the above-described embodiment, the support surface 50a and the protruding portion 52 are described as being integrally formed, but this is not limiting. The support surface 50a and the protruding portion 52 may be separate bodies, such as by fixing the protruding portion 52 onto the support surface 50a.

[0056] In the above-described embodiment, the protrusions 52 are formed in a frame shape surrounding the periphery of the support surface 50a, but the present invention is not limited to this configuration. For example, as shown in Figures 8 and 9, the protrusions 52 may be arranged in an island shape on the first work surface 50. In this case, Figure 9 shows an example in which the protrusions 52 are provided in the middle of each side of the base top plate 30, and Figure 8 shows an example in which the protrusions 52 are provided at each corner of the base top plate 30. In the above-described embodiment, a configuration in which the protrusion 52 (bulging surface 50c) is provided on the outer periphery of the base top plate 30 has been described, but the present invention is not limited to this configuration. For example, as shown in Fig. 10, a configuration in which the protrusion 52 (bulging surface 50c) is provided on the inner periphery of the base top plate 30 and the support surface 50a is provided on the outer periphery of the base top plate 30 may be used. In this case, the optional top plate 31 is supported on the support surface 50a while surrounding the periphery of the protrusion 52.

[0057] In the above-described embodiment, a configuration has been described in which the positioning of the base top plate 30 and the optional top plate 31 is performed only by contact between the optional top plate 31 and the base top plate 30 in a direction intersecting the vertical direction, but this configuration is not limited to this. In addition to contact between the optional top plate 31 and the base top plate 30 in a direction intersecting the vertical direction, positioning may also be performed using a detachable configuration such as a magnet, hook-and-loop fastener, or engaging claw. Also, a material with a high coefficient of friction may be interposed between the support surface 50a of the base top plate 30 and the underside 31a of the optional top plate 31. In the above-described embodiment, a configuration in which only one support surface 50a is provided on the first work surface 50 has been described, but the present invention is not limited to this configuration. A plurality of support surfaces 50a may be provided at intervals on the first work surface 50. In this case, an optional tabletop 31 can be placed on each support surface 50a.

[0058] In addition, within the scope of the spirit of the present invention, it is possible to replace the components in the above-described embodiments with well-known components as appropriate, and the above-described modified examples may be combined as appropriate. [Explanation of symbols]

[0059] 1: Display unit with top 11: Top plate 30: Base top 31: Optional top plate 31c: 2nd work surface 31a: Bottom surface 50: 1st work surface 50a: Support surface 50b: rising surface 50c: bulging surface

Claims

1. a base top plate on which a first work surface is formed, the first work surface having an upwardly facing support surface and a positioning surface rising upward from the support surface; an optional work surface having a second work surface facing upward and different from the first work surface in at least one of material, color, and texture; a first state in which the optional top plate is detached from the base top plate; a second state in which the optional top plate is placed on the first work surface with at least a portion of the lower surface of the optional top plate supported by the support surface; In the second aspect, the optional top plate abuts against the positioning surface in a cross direction that intersects the vertical direction, thereby restricting movement in the cross direction relative to the base top plate.

2. A plurality of optional tabletops differing from one another in at least one of material, color, and texture, 2. The furniture with a top according to claim 1, wherein in the second aspect, at least one optional top can be selectively placed on the first work surface from among a plurality of optional tops.

3. 3. A display unit with a top plate according to claim 1 or claim 2, wherein the positioning surface rises upward from the entire outer periphery of the support surface.

4. 3. A display unit with a top plate as described in claim 1 or claim 2, wherein the first work surface extends from the upper end of the positioning surface in a direction away from the support surface and has a bulging surface facing upward.

5. the positioning surface rises upward from the entire outer periphery of the support surface, The display unit with a top plate according to claim 4, wherein the bulging surface is continuous with the entire periphery of the positioning surface and is formed in a frame shape surrounding the periphery of the support surface when viewed from above and below.

6. The display unit with a top plate according to claim 4, wherein in the second aspect, the second work surface and the bulging surface are arranged at the same height.

7. 3. The display unit with a top plate according to claim 1 or claim 2, wherein in the second aspect, the entire lower surface of the optional top plate is supported from below by the support surface.

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