Auxiliary Tray and Wiring Duct Fixing System

Abstract

The present disclosure addresses the problem of making work comfortable on a top plate of a rack and mitigating a force applied to a connection line between a wiring duct fixed onto the top plate and a conversion device. A sub tray (1) comprises a tray part (11) and a position fixing part (13). The tray part (11) stores a conversion device (3). The conversion device (3) converts power from an external power source into predetermined power, and supplies the power after conversion to a wiring duct (2). The wiring duct (2) is fixed to a top plate (201) of a rack (200). The position fixing part (13) fixes the position of the tray part (11) below the top plate (201). The tray part (11) has a bottom section (111) and a wall section (112). The conversion device (3) is placed on the bottom section (111). The wall section (112) extends upward from the bottom section (111) and surrounds the conversion device (3) placed on the bottom section (111) from the four sides of front, rear, left and right.

Description

Technical Field

[0001] The present disclosure relates to an auxiliary tray and a wiring duct fixing system, and more particularly to an auxiliary tray and a wiring duct fixing system fixed to furniture.

Background Art

[0002] Patent Document 1 describes a wiring tray for a table that can be attached to the edge of the top plate of the table and can store the wiring of a display installed on the table so as not to be exposed around the table. This wiring tray for a table, in a state of being attached to the top plate of the table, extends vertically from a height position above the upper surface of the top plate to a height position below the lower surface of the top plate, and is arranged at a predetermined interval from the edge of the top plate. It includes a shielding plate, a wiring holding portion that extends horizontally from near the lower end of the shielding plate to below the top plate of the table, and a bracket portion for fixing the wiring tray for the table to the top plate of the table.

[0003] Recently, a wiring duct fixing system has been devised in which a wiring duct is provided on the top plate of furniture such as a table, and power is supplied to an electric device of a user who works on the top plate via the wiring duct. In the wiring duct fixing system, a conversion device (for example, an AC adapter that rectifies AC power from the system and extracts predetermined DC power) that converts externally supplied power (for example, AC power from the system) into power used by the electric device (for example, DC power) is required. The conversion device consists of electric wires (connection wires between the conversion device and the wiring duct, and power supply wires between the conversion device and an external power source), and a main body such as a transformer housed in a box-shaped housing interposed in the electric wires.

[0004] Since the main body of the conversion device hinders work when placed on the top plate, it is desirable to be placed below the top plate. However, when trying to place the main body below the top plate, especially when the wiring duct is fixed above the top plate, the main body is suspended from the top plate by the electric wires, and as a result, the force due to the weight of the main body continues to be applied to the electric wires, and the electric wires may be damaged.

[0005] Therefore, it is conceivable to attach the wiring tray for a table of Patent Document 1 to the top plate of the furniture to which the wiring duct fixing system is attached, and store the main body of the conversion device under the top plate. However, since the wiring tray for a table is not assumed to store the main body, for example, it is expected that the main body will fall from the wiring holding part due to an impact when a person hits the furniture or vibration when the furniture is moved. In this case, at the moment when the main body falling while accelerating is suspended by the electric wire, a strong force is applied to the electric wire, and the electric wire may be severely damaged.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Summary of the Invention

[0007] An object of the present disclosure is to provide an auxiliary tray and a wiring duct fixing system capable of optimizing work on the top plate of furniture and reducing the force applied to the connection line between the wiring duct fixed to the top plate and the conversion device.

[0008] An auxiliary tray according to an aspect of the present disclosure includes a tray portion and a position fixing portion. The tray portion houses a conversion device. The conversion device converts electric power from an external power source into predetermined electric power and supplies the converted electric power to a wiring duct. The wiring duct is fixed to the top plate of the furniture. The position fixing portion fixes the position of the tray portion below the top plate. The tray portion has a bottom portion and a wall portion, and the conversion device is placed on the bottom portion. The wall portion extends upward from the bottom portion and surrounds the conversion device placed on the bottom portion from four directions of front, rear, left, and right.

[0009] A wiring duct fixing system according to an aspect of the present disclosure includes a fixture and the auxiliary tray. The fixture fixes a wiring duct to the top plate of the furniture.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

DETAILED DESCRIPTION OF THE INVENTION

[0011] Each figure described in the following embodiments is a schematic figure, and the respective ratios of the sizes and thicknesses of each component do not necessarily reflect the actual dimensional ratios. Note that the configurations described in the following embodiments are merely examples of the present disclosure. The present disclosure is not limited to the following embodiments, and various modifications can be made according to the design and the like as long as the effects of the present disclosure can be achieved.

[0012] (1) Overview (1-1) Wiring Duct Fixing System As shown in FIG. 1, a wiring duct fixing system 100 according to an embodiment of the present disclosure includes a fixture 5 and an auxiliary tray 1.

[0013] (1-1-1) Fixture The fixture 5 is a device for fixing the wiring duct 2 to the top plate 201 of the furniture 200. The furniture 200 is a table in this embodiment. However, the furniture 200 may be anything as long as it has a top plate 201, such as a desk or a counter. The top plate 201 is a plate-shaped member on which articles such as electrical equipment can be placed or work can be carried out on its upper side. The fixture 5 in this embodiment fixes the wiring duct 2 on the upper side of the top plate 201.

[0014] (1-1-2) Auxiliary Tray The auxiliary tray 1 is a member for housing the conversion device 3 connected to the wiring duct 2 on the lower side of the top plate 201. The auxiliary tray 1 in this embodiment is configured to improve the comfort of work on the top plate 201 and reduce the force applied to the connection line between the wiring duct 2 fixed on the top plate 201 and the conversion device 3.

[0015] (1-2) Wiring Duct The wiring duct 2 is a member for supplying power to an electrical device (not shown). The wiring duct 2 is fixed to the top plate 201 of the furniture 200.

[0016] The wiring duct 2 in this embodiment is fixed to the upper side of the top plate 201 by the fixture 5. However, the wiring duct 2 may be fixed to the lower side or side of the top plate 201 by a predetermined fixture.

[0017] The wiring duct 2 supplies the power supplied from the conversion device 3 to the electrical device used on the top plate 201. Specifically, the wiring duct 2 has a connector 22 and supplies the power supplied from the conversion device 3 housed in the auxiliary tray 1 fixed to the lower side of the top plate 201 via a connection line (described later) to the electrical device (not shown) connected to the connector 22.

[0018] In this embodiment, the wiring duct 2 is a DC duct, and the connector 22 is a USB connector. The DC duct supplies DC power from an AC adapter to an electrical device (not shown) connected to the USB connector. The electrical device is a device that operates on DC power, such as a portable device like a notebook computer or a tablet terminal.

[0019] However, the conversion device 3 is a device (AC / AC converter) that converts AC power from a commercial power supply into predetermined AC power, for example, with different voltage (and / or frequency). The electrical device may be a device that operates on the converted AC power.

[0020] (1-3) Conversion device The conversion device 3 converts the power from an external power supply into predetermined power and supplies the converted power to the wiring duct 2.

[0021] The external power supply is, for example, a commercial power supply (AC outlet) connected to the power grid. AC power is supplied from the commercial power supply. The conversion device 3 in this embodiment is an AC adapter. The AC adapter converts the AC power from the commercial power supply into DC power and supplies the converted DC power to the wiring duct 2.

[0022] The conversion device 3 has a connector 32. The connector 32 is a power connector, and a power cord (not shown) connectable to the external power supply is attached to the power connector. The conversion device 3 is connected to the wiring duct 2 via a connection line.

[0023] (1-4) Connection line The connection line is an electric wire that electrically connects between the wiring duct 2 and the conversion device 3. In this embodiment, as shown in FIG. 2, the connection line includes a first connection line 21 pre-connected to the wiring duct 2, a second connection line 31 pre-connected to the conversion device 3, and a coupling portion 4 that couples the first connection line 21 and the second connection line 31 to each other. Hereinafter, such a connection line will be referred to as "connection line (21, 31, 4)".

[0024] (2) Details (2-1) Fixture The fixture 5 has an attachment portion 51 and a pair of clamping portions 52, 52. The attachment portion 51 is a long member to which the wiring duct 2 is attached. The pair of clamping portions 52, 52 are members in a clamp form provided at both ends in the longitudinal direction of the attachment portion 51 (the left end and the right end in FIG. 1) for clamping the top plate 201.

[0025] In addition, the attachment portion 51 in the present embodiment has a holding portion 51a. The holding portion 51a is provided on the upper surface of the attachment portion 51 and holds the partition 202. The partition 202 is a plate-like member formed of a transparent material such as acrylic. As a result, the upper side of the top plate 201 is partitioned front and back by the partition 202, making the work on the facing surfaces comfortable and improving the usability of the furniture 200. However, the partition 202 may not be provided. In that case, the attachment portion 51 does not have the holding portion 51a, and the upper surface of the attachment portion 51 may be flat.

[0026] (2-1-1) First clamping portion Among the pair of clamping portions 52, 52, a connection wire (21, 31, 4) is wired to one clamping portion 52 (the clamping portion 52 on the left end side in FIG. 1: hereinafter, the first clamping portion 52). Thereby, the conversion device 3 and the wiring duct 2 are electrically connected.

[0027] In this way, the wiring duct 2 on the top plate 201 and the conversion device 3 housed in the tray portion 11 below the top plate 201 can be connected via one clamping portion (the first clamping portion 52) constituting the fixture 5.

[0028] (2-1-2) Details of the first clamping portion The first clamping portion 52 has a first lower surface portion 52a, a first bolt 52b, a first joint portion 52c, a first upper surface portion 52d, and a first knob 52e.

[0029] The first lower surface portion 52a is parallel to the top plate 201. The first bolt (52b) penetrates the first lower surface portion 52a. The first contact surface portion 52c is attached to the tip of the first bolt 52b. The first upper surface portion 52d faces the first lower surface portion 52a with the first contact surface portion 52c interposed therebetween. The first knob 52e is attached to the rear end of the first bolt 52b.

[0030] The first clamping portion 52 in the present embodiment (and Modification 1) further has a first abutting portion 52f. The first abutting portion 52f connects between one end of the first lower surface portion 52a and one end of the first upper surface portion 52d and abuts against the side surface of the top plate 201. However, the end of the first lower surface portion 52a and the first upper surface portion 52d may be supported by separate support members (not shown).

[0031] Further, the first clamping portion 52 further has a cover 521. The cover 521 of the first clamping portion 52 houses the connection lines (21, 31, 4).

[0032] Note that the other clamping portion 52 (the right - hand side in FIG. 1) constituting the fixture 5 may have the same configuration as the first clamping portion 52.

[0033] With such a first clamping portion 52, the wiring duct 2 can be fixed on the top plate 201.

[0034] (2 - 2) Auxiliary Tray The auxiliary tray 1 according to the embodiment of the present disclosure includes a tray portion 11 and a position fixing portion 13 as shown in FIGS. 1 - 3.

[0035] The tray portion 11 houses the conversion device 3. The tray portion 11 in the present embodiment also houses a part of the connection lines (21, 31, 4).

[0036] The position fixing portion 13 fixes the position of the tray portion 11 below the top plate 201. The position fixing portion 13 in the present embodiment is a member in a clamp form and is realized by a pair of second clamping portions 131, 131 as shown in FIG. 3 and the like. Note that the pair of second clamping portions 131, 131 will be described later.

[0037] However, the position fixing portion 13 may be realized by, for example, a mounting bracket 132 and a pair of screws 133 as shown in FIG. 5B (see Modification 2).

[0038] (2-2-1) Tray portion The tray portion 11 has a bottom portion 111 and a wall portion 112. In the present embodiment, the bottom portion 111 and the wall portion 112 are integrally formed by, for example, bending as shown in FIG. 1 and the like. However, the bottom portion 111 and the wall portion 112 may be separate from each other. In that case, the wall portion 112 is attached to the bottom portion 111 by, for example, screws, welding, or the like.

[0039] (2-2-1a) Bottom The conversion device 3 is placed on the bottom portion 111. In a state where the conversion device 3 is placed on the bottom portion 111, the weight of the conversion device 3 is applied to the bottom portion 111 and not to the connection lines (21, 31, 4). The bottom portion 111 receives the weight of the conversion device 3 and supports the conversion device 3.

[0040] (2-2-1b) Wall The wall portion 112 extends upward from the bottom portion 111 and surrounds the conversion device 3 placed on the bottom portion 111 from the front, back, left, and right directions.

[0041] Note that the wall portion 112 usually extends vertically upward, but may be inclined by an angle less than a threshold value (for example, 5) with respect to the vertically upward direction. Also, the four directions include the directions between two adjacent directions (for example, the front left, the front right, the rear left, the rear right, etc.).

[0042] As described above, the auxiliary tray 1 according to the present embodiment is disposed under the top plate 201 to store a conversion device 3 such as an AC adapter connected to the wiring duct 2 fixed on the top plate 201, and has a bottom portion 111 for placing the conversion device 3 and a wall portion 112 for preventing the conversion device 3 from falling.

[0043] As a result of the tray portion 11 being disposed under the top plate 201 by the position fixing portion 13, the conversion device 3 can be stored under the top plate 201, and the work on the top plate 201 can be made more comfortable.

[0044] Also, as a result of the conversion device 3 being supported by the bottom portion 111 that constitutes the tray portion 11, reduction of the force continuously applied to the connection lines (21, 31, 4) between the wiring duct 2 and the conversion device 3 is achieved.

[0045] Furthermore, as a result of the conversion device 3 being surrounded on all sides by the wall portion 112 and the fall of the conversion device 3 from the bottom portion 111 being prevented, reduction of the force instantaneously applied to the connection lines (21, 31, 4) is achieved.

[0046] Therefore, by means of the auxiliary tray 1, it is possible to improve the comfort of work on the top plate 201 of the furniture 200 and to reduce the force applied to the connection lines (21, 31, 4) between the wiring duct 2 fixed to the top plate 201 and the conversion device 3.

[0047] As a result of the force applied to the connection lines (21, 31, 4) being reduced, suppression of damage (for example, damage or breakage of each of the first connection line 21 and the second connection line 31, loosening or detachment of the joint portion 4, etc.) received by the connection lines (21, 31, 4) is achieved.

[0048] (2-2-2) Notch for wiring As shown in FIG. 3 and the like, the wall portion 112 has one or more (three in this embodiment) notches 11a for wiring. The notch 11a for wiring is a notch through which the connection lines (21, 31, 4) pass.

[0049] As a result of the connection lines (21, 31, 4) passing through the notch 11a for wiring, floating of the conversion device 3 due to the connection lines (21, 31, 4) overcoming the wall portion 112 is suppressed, and as a result, reduction of the force continuously applied to the connection lines (21, 31, 4) is achieved. Therefore, by the wall portion 112 having the notch 11a for wiring, further reduction of the force applied to the connection lines (21, 31, 4) can be achieved.

[0050] Note that a power cord (not shown) attached to the connector 32 of the conversion device 3 may also pass through the wiring notch 11a. If the power cord passes through the wiring notch 11a, the conversion device 3 is prevented from lifting due to the power cord climbing over the wall portion 112, and as a result, the force continuously applied to the power cord is reduced. Thereby, damage to the power cord caused by the weight of the conversion device 3 can be suppressed.

[0051] (2-2-3) Thickness of the conversion device and height of the wall As shown in FIG. 3, a part of the wall portion 112 (in this embodiment, the first wall portion 112A: described later) has a height (referred to as "h1": h1 > d) that exceeds the vertical thickness (referred to as "d") of the conversion device 3 placed on the bottom portion 111.

[0052] Note that the above-mentioned part may be any part of the four wall portions (the first wall portion 112A, the second wall portion 112B, and a pair of third wall portions 112C, 112C: described later) that make up the wall portion 112. For example, the first wall portion 112A and the pair of third wall portions 112C, 112C may have a height exceeding the thickness d.

[0053] The position fixing portion 13 fixes the above-mentioned part of the wall portion 112 to the top plate 201. The position fixing portion 13 usually fixes the upper end side of the above-mentioned part of the wall portion 112 to the lower side of the top plate 201.

[0054] In this embodiment, the upper end portion 112a (described later) of the first wall portion 112A is fixed to the lower side of the top plate 201.

[0055] In this way, in the tray portion 11, the height of a part (the first wall portion 112A) of the wall portion 112 exceeds the thickness d of the conversion device 3, and as a result of the position fixing portion 13 fixing the upper end side (the upper end portion 112a) of the part (the first wall portion 112A) to the lower side of the top plate 201, the entire tray portion 11 composed of the bottom portion 111 and the wall portion 112 is disposed under the top plate 201. Also, in the tray portion 11, the bottom portion 111 is supported by the part (the first wall portion 112A) of the wall portion 112.

[0056] That is, a part of the wall portion 112 for preventing fall (the first wall portion 112A) is long in the vertical direction (tall), and the upper end side (the upper end portion 112a) of the part (the first wall portion 112A) is fixed under the top plate 201 by the position fixing portion 13, so that the part (the first wall portion 112A) can support the bottom portion 111.

[0057] Therefore, by using a part of the wall portion 112 (the first wall portion 112A), it is possible to improve the comfort of work and reduce the force applied to the connection lines (21, 31, 4).

[0058] (2-2-4) Details of the bottom: First - Third end portions As shown in FIG. 4, the bottom portion 111 has a shape along a long rectangular shape.

[0059] In this embodiment, as shown in FIG. 3, the conversion device 3 has a long rectangular parallelepiped shape, and the bottom portion 111 has a length (size in the front - rear direction) and a width (size in the left - right direction) that can accommodate two conversion devices 3 arranged side by side in the longitudinal direction. Note that the longitudinal direction of the conversion device 3 is the front - rear direction shown in FIG. 3 etc. (the same applies to the longitudinal direction of the bottom portion 111).

[0060] The shape along the rectangle may be a rectangle or a substantially rectangle. A substantially rectangle is, for example, a shape with a part of the rectangle missing, but it may also be a shape with a part of the rectangle protruding. The bottom portion 111 only needs to be a long rectangle as a whole.

[0061] Hereinafter, in such a bottom portion 111, one of the pair of end portions along the longitudinal direction (the portion corresponding to the pair of long sides of the rectangle along which the bottom portion 111 extends) (the side in contact with the first wall portion 112A) is referred to as the "first end portion 111A", and the other (the side in contact with the second wall portion 112B) is referred to as the "second end portion 111B". Also, in the bottom portion 111, the pair of end portions (the portions corresponding to the pair of short sides of the rectangle) sandwiched between both ends of each of the first end portion 111A and the second end portion 111B are referred to as the "pair of third end portions 111C, 111C".

[0062] (2-2-5) The first wall portion The wall portion 112 includes a first wall portion 112A. The first wall portion 112A extends upward from the first end portion 111A of the bottom portion 111. The conversion device 3 placed on the bottom portion 111 is prevented from falling from the first end portion 111A by the first wall portion 112A.

[0063] The first wall portion 112A extends from the first end portion 111A to a first height. The first height is the aforementioned height h1, and the first height h1 satisfies "h1 > d" with respect to the aforementioned thickness d.

[0064] The position fixing portion 13 fixes the upper end portion 112a of the first wall portion 112A to the lower side of the top plate 201.

[0065] Thereby, the first wall portion 112A prevents the conversion device 3 placed on the bottom portion 111 from falling from the first end portion 111A and can support the bottom portion 111. Therefore, by using the first wall portion 112A, the comfort of the operation and the reduction of the force applied to the connection lines (21, 31, 4) can be achieved.

[0066] In addition, in the present embodiment, as shown in FIG. 3 and the like, the first wall portion 112A extends to a height approximately twice the thickness d of the conversion device 3 (h1 ≈ 2d). Thereby, a balance can be achieved between facilitating the placement of the conversion device 3 on the bottom portion 111 and miniaturizing the tray portion 11.

[0067] However, the relationship between the first height h1 and the thickness d may be, for example, "d < h1 < 2d" or "2d < h1". For example, the first wall portion 112A in the second modification partially satisfies "2d < h1" (see FIG. 5B).

[0068] (2-2-6) Window of the first wall portion The first wall portion 112A has a window 11d. The window 11d is provided at a position where the first knob 52e of the first clamping portion 52 can be seen through the first wall portion 112A (see FIG. 2).

[0069] Through the window 11d provided in the first wall portion 112A, the first knob 52e of the clamping portion 52 can be operated, so that the detachable property of the fixture 5 to the top plate 201 can be improved. Further, the connection lines (21, 31, 4) from the conversion device 3 placed on the bottom portion 111 can be routed, for example, through the gap between the first wall portion 112A and the conversion device 3 and then drawn out from the window 11d to the outside of the first wall portion 112A, so that the accommodation property of the connection lines (21, 31, 4) can be improved.

[0070] (2-2-7) Second Wall Portion and a Pair of Third Wall Portions As shown in FIG. 3 and the like, the wall portion 112 further includes a second wall portion 112B and a pair of third wall portions 112C, 112C. The second wall portion 112B extends upward from the second end portion 111B of the bottom portion 111, and the pair of third wall portions 112C, 112C extend upward from the pair of third end portions 111C of the bottom portion 111, respectively.

[0071] The conversion device 3 placed on the bottom portion 111 is prevented from falling from the second end portion 111B by the second wall portion 112B, and further, the pair of third wall portions 112C, 112C also prevent the conversion device 3 from falling from the pair of third end portions 111C, 111C. Therefore, by using the second wall portion 112B and the pair of third wall portions 112C, 112C, a further reduction in the force applied to the connection lines (21, 31, 4) can be achieved.

[0072] Note that the second wall portion 112B in the present embodiment extends from the second end portion 111B of the bottom portion 111 to the second height h2. The second height h2 is usually less than the first height h1 (h2 < h1). The second height h2 may be, for example, a height not exceeding the thickness d of the conversion device 3 (h2 < d < h1).

[0073] The second height h2 in the present embodiment is approximately half the thickness d of the conversion device 3 (h2 ≒ d / 2). This achieves both the facilitation of placing the conversion device 3 on the bottom portion 111 and the improvement of the anti-drop effect from the second end portion 111B of the bottom portion 111.

[0074] Note that both end portions of the second wall portion 112B shown in FIG. 3 and the like are bent toward the first wall portion 112A side (the front end portion is in the left front and the rear end portion is in the left rear). Such bent both end portions of the second wall portion 112B can also contribute to preventing the conversion device 3 from falling from the pair of third end portions 111C, 111C of the bottom portion 111.

[0075] (2-2-8) Reinforcement function for the first wall portion The pair of third wall portions 112C, 112C extend from the pair of third end portions 111C, 111C to a height reaching the upper end portion 112a of the first wall portion 112A (that is, the first height h1).

[0076] Such a pair of third wall portions 112C, 112C has a function of reinforcing the first wall portion 112A that supports the bottom portion 111. As a result of suppressing the drop caused by the deformation of the bottom portion 111 by this reinforcement function, it is possible to further reduce the force applied to the connection lines (21, 31, 4).

[0077] (2-2-9) Opposing surface between the second lower surface portion of the position fixing portion and the first wall portion The position fixing portion 13 in this embodiment has a second lower surface portion 131a. The second lower surface portion 131a is parallel to the top plate 201 as shown in FIG. 4.

[0078] The upper end portion 112a of the first wall portion 112A is the opposing surface portion 112a in this embodiment. The opposing surface portion 112a is parallel to the top plate 201 as shown in FIG. 4 and extends toward the second wall portion 112B side.

[0079] The position fixing portion 13 fixes the opposing surface portion 112a of the first wall portion 112A to the lower side of the top plate 201 in a state where it faces the second lower surface portion 131a of the position fixing portion 13 itself.

[0080] In this way, the upper end portion 112a of the first wall portion 112A is the opposing surface portion 112a bent parallel to the top plate 201, and by the opposing surface portion 112a facing the second lower surface portion 131a of the position fixing portion 13, the position of the tray portion 11 can be stably fixed with respect to the top plate 201.

[0081] (2-2-10) Guide portion The upper end portion 112a of the first wall portion 112A may further include one or more (usually two) guide portions 11c. The one or more guide portions 11c extend upward along the side surface of the top plate 201.

[0082] As a result of the rotation of the tray portion 11 being suppressed by such one or more guide portions 11c, it is possible to prevent the deformation of the tray portion 11 due to contact with a human body or the like.

[0083] The one or more guide portions 11c usually extend to a height that does not exceed the upper surface of the top plate 201. Since the height of the one or more guide portions 11c does not exceed the height of the upper surface of the top plate 201, it does not interfere with the work on the top plate 201.

[0084] The one or more guide portions 11c are, for example, a pair of guide portions 11c, 11c provided at positions sandwiching the longitudinal center of the bottom portion 111. As a result, the rotation of the tray portion 11 is effectively suppressed, and it is possible to further prevent the deformation of the tray portion 11 due to contact with a human body or the like.

[0085] In addition, as in Modification 2, when the tray portion 11 is fixed to one clamping portion (the first clamping portion 52) of the fixture 5 (see FIG. 5B), since the one clamping portion (the first clamping portion 52) serves as a fulcrum and the tray portion 11 is likely to rotate, one or more guide portions 11c (particularly, a pair of guide portions 11c, 11c) are effective.

[0086] On the other hand, in the present embodiment and Modification 1, as shown in FIGS. 3 and 5A, in each of the pair of second clamping portions 131, 131, the rotation of the tray portion 11 is suppressed by the second abutting portion 131f abutting against the side surface of the top plate 201. Therefore, the upper end portion 112a does not have the guide portion 11c. However, in the present embodiment and Modification 1 as well, the upper end portion 112a may have one or more guide portions 11c.

[0087] (2-2-11) A pair of second clamping portions: An auxiliary tray separated from the fixture As shown in FIG. 3 and the like, the position fixing portion 13 in the present embodiment has a pair of second clamping portions 131, 131. The pair of second clamping portions 131, 131 are arranged with the first clamping portion 52 therebetween and clamp the top plate 201.

[0088] With such a pair of second clamping portions 131, 131, the long tray portion 11 can be stably fixed under the top plate 201. Further, since the auxiliary tray 1 has a pair of second clamping portions 131, 131 separately from the first clamping portion 52 of the fixture 5, the auxiliary tray 1 can be separated from the fixture 5.

[0089] (2-2-12) Details of the second clamping portion Each of the pair of second clamping portions 131, 131 (hereinafter simply referred to as "second clamping portion 131") has a second lower surface portion 131a, a second bolt 131b, a second joint surface portion 131c, a second upper surface portion 131d, and a second knob 131e.

[0090] The second lower surface portion 131a is parallel to the top plate 201. The second bolt 131b penetrates the second lower surface portion 131a. The second joint surface portion 131c is attached to the tip of the second bolt 131b. The second upper surface portion 131d faces the second lower surface portion 131a with the second joint surface portion 131c therebetween. The second knob 131e is attached to the rear end of the second bolt 131b.

[0091] The second clamping portion 131 in the present embodiment (and Modification 1) further has a second abutting portion 131f. The second abutting portion 131f connects between one end of the second lower surface portion 131a and one end of the second upper surface portion 131d and abuts against the side surface of the top plate 201. However, the second lower surface portion 131a and the second upper surface portion 131d may be supported by separate support members (not shown).

[0092] (2-2-13) Insertion notch As shown in FIG. 4, the upper end portion 112a of the first wall portion 112A includes a pair of opposing portions 112a, 112a and an insertion notch 11b.

[0093] The pair of opposing surfaces 112a, 112a extend toward the second wall portion 112B side and are parallel to the top plate 201. The insertion notch 11b is formed between the pair of opposing surfaces 112a, 112a, and the first lower surface portion 52a of the first clamping portion 52 can be inserted therein.

[0094] With the first lower surface portion 52a of the first clamping portion 52 inserted into the insertion notch 11b, the pair of opposing surfaces 112a, 112a face and are joined (for example, fastened with screws, etc.) to a pair of second lower surface portions 131a, 131a corresponding to the pair of second clamping portions 131, 131.

[0095] This enables the provision of the auxiliary tray 1 separated from the fixture 5.

[0096] (2-2-14) Specific examples of the pair of second lower surface portions 131a, 131a In this embodiment, the pair of second lower surface portions 131a, 131a corresponding to the pair of second clamping portions 131, 131 constituting the position fixing portion 13 are separate from each other as shown in FIG. 4.

[0097] Each of the pair of second lower surface portions 131a, 131a (hereinafter simply referred to as "second lower surface portion 131a") has a bolt hole (not shown) through which the second bolt 131b passes and a pair of screw holes (not shown) formed at positions sandwiching the bolt hole from the front and rear, into which a pair of screws 131g, 131g are screwed.

[0098] Each of the pair of opposing surfaces 112a, 112a included in the upper end portion 112a of the first wall portion 112A (hereinafter simply referred to as "opposing surface 112a") has a bolt hole 1121 and a pair of screw holes 1122, 1122 formed at positions corresponding to the bolt hole and the pair of screw holes formed in the second lower surface portion 131a of the second clamping portion 131, and a slit 1123 formed at a position corresponding to the second abutting portion 131f of the second clamping portion 131.

[0099] For each of the pair of second clamping parts 131, 131, for example, the following operations are performed. That is, the second joint surface part 131c is removed from the tip of the second bolt 131b, and the second bolt 131b is removed from the bolt hole in the second lower surface part 131a. Next, a part of the second upper surface part 131d and the second abutting part 131f of the second clamping part 131 penetrate the slit 1123 of the facing part 112a, and after the second lower surface part 131a faces the facing part 112a, a pair of screws 131g, 131g penetrate the pair of screw holes 1122, 1122 of the facing part 112a and are screwed into the pair of screw holes in the second lower surface part 131a. Next, the second bolt 131b is inserted into the bolt hole in the second lower surface part 131a and the bolt hole 1121 of the facing part 112a, and the second joint surface part 131c is attached to the tip of the second bolt 131b.

[0100] Thereby, the pair of second clamping parts 131, 131 are fixed to the pair of facing parts 112a, 112a.

[0101] In this specific example, since the pair of second lower surface parts 131a, 131a are separate from each other, the size of the parts can be reduced compared to the case where they are integrated with each other (Modification 1: see Fig. 5A).

[0102] (3) Modification 1: Integration of the pair of second lower surface parts 131a, 131a In Modification 1, the pair of second lower surface parts 131a, 131a corresponding to the pair of second clamping parts 131, 131 are integrated with each other as shown in Fig. 5A.

[0103] The integrated pair of second lower surface parts 131a, 131a have a bolt notch 131aA at the center thereof into which the first bolt 52b is inserted.

[0104] According to this modification, the number of parts can be reduced compared to the case where the pair of second lower surface parts 131a, 131a are separate from each other (see Fig. 4).

[0105] (4) Modification 2: Auxiliary tray integrated with the fixture In the second modification, the position fixing portion 13 attaches the tray portion 11 to one clamping portion (first clamping portion 52) of the fixture 5.

[0106] The position fixing portion 13 is realized by, for example, a mounting bracket 132 and a pair of screws 133 as shown in FIG. 5B. That is, the tray portion 11 is attached to the first clamping portion 52 with a pair of screws 133 via the mounting bracket 132.

[0107] Specifically, the first lower surface portion 52a of the first clamping portion 52 has a pair of screw holes (not shown). The mounting bracket 132 has a length exceeding the insertion notch 11b (see FIG. 4). The mounting bracket 132 also has a third lower surface portion 132a facing the opposing surface portion 112a of the first wall portion 112A. Further, the mounting bracket 132 has, at its center, a bolt notch 132b into which the first bolt 52b of the first clamping portion 52 is inserted, and a pair of screw holes (not shown) sandwiching the bolt notch 132b.

[0108] With the first lower surface portion 52a of the first clamping portion 52 inserted into the insertion notch 11b of the opposing surface portion 112a, the first bolt 52b of the first clamping portion 52 inserted into the bolt notch 132b, and the third lower surface portion 132a of the mounting bracket 132 attached so as to face each of the opposing surface portion 112a of the tray portion 11 and the first lower surface portion 52a of the first clamping portion 52, a pair of screws 133, 133 are screwed into the pair of screw holes (not shown) of the first lower surface portion 52a of the first clamping portion 52 through the pair of screw holes (not shown) of the mounting bracket 132. Thereby, the mounting bracket 132 is attached to the first lower surface portion 52a of the first clamping portion 52.

[0109] Also, in the tray portion 11 in Modification 2, as shown in FIG. 5B, in the upper end portion 112a of the first wall portion 112A, both end portions (front end portion and rear end portion) in the longitudinal direction serve as the pair of guide portions 11c, 11c described above. Among the upper end portion 112a, the portion between the pair of guide portions 11c, 11c is bent parallel to the top plate 201 to form the above-described facing portion 112a. The pair of guide portions 11c, 11c extend to the same height as the upper surface of the top plate 201. When the pair of guide portions 11c, 11c contact the side surface of the top plate 201, the rotation of the tray portion 11 is suppressed.

[0110] According to this modification, it becomes possible to provide the auxiliary tray 1 integrated with the fixture 5. Therefore, when the fixture 5 is attached, the auxiliary tray 1 can also be attached together, facilitating the attachment work.

[0111] (5) Summary The auxiliary tray (1) according to the first aspect of the present disclosure includes a tray portion (11) and a position fixing portion (13). The tray portion (11) houses the conversion device (3). The conversion device (3) converts the power from an external power source into a predetermined power and supplies the converted power to the wiring duct (2). The wiring duct (2) is fixed to the top plate (201) of the furniture (200). The position fixing portion (13) fixes the position of the tray portion (11) below the top plate (201). The tray portion (11) has a bottom portion (111) and a wall portion (112). The bottom portion (111) is where the conversion device (3) is placed. The wall portion (112) extends upward from the bottom portion (111) and surrounds the conversion device (3) placed on the bottom portion (111) from the front, rear, left, and right sides.

[0112] In this aspect, as a result of the tray portion (11) being disposed below the top plate (201) by the position fixing portion (13), the conversion device (3) can be stored below the top plate (201), and the comfort of working on the top plate (201) is improved. Also, as a result of the conversion device (3) being supported by the bottom portion (111) that constitutes the tray portion (11), reduction of the force continuously applied to the connection lines (21, 31, 4) between the wiring duct (2) and the conversion device (3) is achieved. Further, as a result of the conversion device (3) being surrounded from all sides by the wall portion (112) and the fall of the conversion device (3) from the bottom portion (111) being prevented, reduction of the force instantaneously applied to the connection lines (21, 31, 4) is achieved.

[0113] Therefore, according to this aspect, it is possible to improve the comfort of working on the top plate (201) of the furniture (200) and to reduce the force applied to the connection lines (21, 31, 4) between the wiring duct (2) fixed on the top plate (201) and the conversion device (3).

[0114] In the auxiliary tray (1) according to the second aspect, in the first aspect, the wall portion (112) has a wiring notch (11a). The wiring notch (11a) is a notch through which the connection lines (21, 31, 4) pass. The connection lines (21, 31, 4) are electric wires that electrically connect between the wiring duct (2) and the conversion device (3).

[0115] According to this aspect, as a result of suppressing the lifting of the conversion device (3) due to the connection lines (21, 31, 4) getting over the wall portion (112), reduction of the force continuously applied to the connection lines (21, 31, 4) is achieved. Therefore, further reduction of the force applied to the connection lines (21, 31, 4) can be achieved.

[0116] In the auxiliary tray (1) according to the third aspect, in the first or second aspect, a part (first wall portion 112A) of the wall portion (112) has a height (h1: h1 > d) exceeding the vertical thickness (d) of the conversion device (3) placed on the bottom portion (111). The position fixing portion (13) fixes the upper end (upper end portion 112a) of a part (first wall portion 112A) of the wall portion (112) to the top plate (201).

[0117] According to this aspect, the entire tray portion (11) composed of the bottom portion (111) and the wall portion (112) is disposed under the top plate (201). Also, in the tray portion (11), the bottom portion (111) is supported by the part (first wall portion 112A) of the wall portion (112). Therefore, by using a part (112A) of the wall portion (112), it is possible to improve work comfort and reduce the force applied to the connection lines (21, 31, 4).

[0118] In the auxiliary tray (1) according to the fourth aspect, in the third aspect, the bottom portion (111) has a shape along a long rectangular shape. The wall portion (112) includes the first wall portion (112A). The first wall portion (112A) extends from the first end portion (111A) to the first height (h1). The first end portion (111A) is one (first end portion 111A) of a pair of end portions (first end portion 111A, second end portion 111B) along the longitudinal direction of the bottom portion (111). The first height (h1) is a height (h1>d) exceeding the thickness (d). The position fixing portion (13) fixes the upper end portion (112a) of the first wall portion (112A) to the top plate (201).

[0119] According to this aspect, the first wall portion (112A) can prevent the conversion device (3) placed on the bottom portion (111) from falling from the first end portion (111A) and can support the bottom portion (111). Therefore, by using the first wall portion (112A), it is possible to improve work comfort and reduce the force applied to the connection lines (21, 31, 4).

[0120] In the auxiliary tray (1) according to the fifth aspect, in the fourth aspect, the wall portion (112) further includes a second wall portion (112B) and a pair of third wall portions (112C, 112C). The second wall portion (112B) extends from the second end portion (111B) to the second height (h2). The second end portion (111B) is the other (second end portion 111B) of the pair of end portions (first end portion 111A, second end portion 111B). The second height (h2) is a height (h2<h1) less than the first height (h1).

[0121] A pair of third wall portions (112C, 112C) extend upward from a pair of third end portions (111C, 111C). The pair of third end portions (111C, 111C) are a pair of end portions sandwiched between both ends of each of the first end portion (111A) and the second end portion (111B) of the bottom portion (111).

[0122] According to this aspect, the second wall portion (112B) prevents the fall from the second end portion (111B), and further, the pair of third wall portions (112C, 112C) also prevent the fall from the pair of third end portions (111C, 111C). Therefore, by using the second wall portion (112B) and the pair of third wall portions (112C, 112C), further reduction of the force applied to the connection lines (21, 31, 4) can be achieved.

[0123] In the auxiliary tray (1) according to the sixth aspect, in the fifth aspect, the pair of third wall portions (112C, 112C) extend from the portions on the first end portion (111A) side of the pair of third end portions (111C, 111C) to a height reaching the upper end portion (112a) of the first wall portion (112A).

[0124] According to this aspect, the pair of third wall portions (112C, 112C) reinforce the first wall portion (112A) that supports the bottom portion (111), and as a result, the fall caused by the deformation of the bottom portion (111) is suppressed, and further reduction of the force applied to the connection lines (21, 31, 4) can be achieved.

[0125] In the auxiliary tray (1) according to the seventh aspect, in the fifth or sixth aspect, the position fixing portion (13) has a second lower surface portion (131a). The second lower surface portion (131a) is parallel to the top plate (201). The upper end portion (112a) of the first wall portion (112A) includes a facing portion (112a). The facing portion (112a) extends toward the second wall portion (112B) side and is parallel to the top plate (201). The position fixing portion (13) is fixed below the top plate (201) with the facing portion (112a) facing the second lower surface portion (131a).

[0126] According to this aspect, the position of the tray portion (11) can be stably fixed with respect to the top plate (201).

[0127] In the auxiliary tray (1) according to the eighth aspect, in the seventh aspect, the upper end portion (112a) further includes one or more guide portions (11c). The one or more guide portions (11c) extend along the side surface of the top plate (201) to a height not exceeding the upper surface of the top plate (201).

[0128] According to this aspect, as a result of the rotation of the tray portion (11) being suppressed by the one or more guide portions (11c), it is possible to prevent the deformation of the tray portion (11) due to contact with a human body or the like. Further, since the height of the one or more guide portions (11c) does not exceed the upper surface of the top plate (201), the work on the top plate (201) is not hindered.

[0129] Note that the guide portion (11c) is particularly effective when the tray portion (11) is fixed to one clamping portion (52) of the fixture (5) as in the fifteenth aspect, because the one clamping portion (52) serves as a fulcrum and the tray portion (11) rotates easily.

[0130] In the auxiliary tray (1) according to the ninth aspect, in any of the fifth to eighth aspects, the wiring duct (2) is fixed above the top plate (201) by the fixture (5). The fixture (5) has a mounting portion (51) and a pair of clamping portions (52, 52). The mounting portion (51) is a long member to which the wiring duct (2) is attached. The pair of clamping portions (52, 52) are provided at both ends in the longitudinal direction of the mounting portion (51) and clamp the top plate (201). A connection wire (21, 31) is wired to one of the pair of clamping portions (52, 52) of the fixture (5). The connection wires (21, 31, 4) are electric wires that electrically connect the conversion device (3) placed on the bottom (111) and the wiring duct (2).

[0131] According to this aspect, the conversion device (3) housed in the tray portion (11) fixed below the top plate (201) can be connected to the wiring duct (2) via one clamping portion (52) constituting the fixture (5) that fixes the wiring duct (2) on the top plate (201).

[0132] In the auxiliary tray (1) according to the tenth aspect, in the ninth aspect, one clamping portion (52) is the first clamping portion (52), and the position fixing portion (13) has a pair of second clamping portions (131, 131). The pair of second clamping portions (131, 131) are arranged sandwiching the first clamping portion (52) and clamp the top plate (201).

[0133] According to this aspect, the pair of second clamping portions (131, 131) can fix the long tray portion (11) under the top plate (201). Further, separately from the first clamping portion (52) of the fixture (5), since the auxiliary tray (1) has a pair of second clamping portions (131, 131), it becomes possible to separate the auxiliary tray (1) from the fixture (5).

[0134] In the auxiliary tray (1) according to the eleventh aspect, in the tenth aspect, the first clamping portion (52) has a first lower surface portion (52a) parallel to the top plate (201), a first bolt (52b) passing through the first lower surface portion (52a), and a first knob (52e) attached to the rear end of the first bolt (52b). The first wall portion (112A) further has a window (11d) provided at a position where the first knob (52e) of the first clamping portion (52) can be seen through.

[0135] According to this aspect, since the first knob (52e) of the first clamping portion (52) can be operated through the window (11d) of the first wall portion (112A), the detachability of the fixture (5) to the top plate (201) can be improved. Further, after routing the connection lines (21, 31, 4) from the conversion device (3) placed on the bottom (111) through, for example, the gap between the first wall portion (112A) and the conversion device (3), they can be drawn out from the window (11d) to the outside of the first wall portion (112A), so the accommodation performance of the connection lines (21, 31, 4) can be improved.

[0136] In the auxiliary tray (1) according to the twelfth aspect, in the eleventh aspect, each of the pair of second clamping portions (131, 131) has a second lower surface portion (131a). The second lower surface portion (131a) is parallel to the top plate (201). The upper end portion (112a) of the first wall portion (112A) includes a pair of opposing surface portions (112a, 112a) parallel to the top plate (201) that extend toward the second wall portion (112B) side, and an insertion notch (11b) formed between the pair of opposing surface portions (112a, 112a) into which the first lower surface portion (52a) of the first clamping portion (52) can be inserted. The pair of opposing surface portions (112a, 112a) are joined in a face-to-face manner with a pair of second lower surface portions (131a, 131a) corresponding to the pair of second clamping portions (131, 131) in a state where the first lower surface portion (52a) of the first clamping portion (52) is inserted into the insertion notch (11b).

[0137] According to this aspect, it becomes possible to provide an auxiliary tray (1) separated from the fixture (5).

[0138] In the auxiliary tray (1) according to the thirteenth aspect, in the twelfth aspect, the pair of second lower surface portions (131a, 131a) corresponding to the pair of second clamping portions (131, 131) are separate from each other.

[0139] According to this aspect, miniaturization of parts can be achieved.

[0140] In the auxiliary tray (1) according to the fourteenth aspect, in the twelfth aspect, the pair of second lower surface portions (131a, 131a) corresponding to the pair of second clamping portions (131, 131) are integral with each other.

[0141] According to this aspect, reduction of the number of parts can be achieved.

[0142] In the auxiliary tray (1) according to the fifteenth aspect, in the ninth aspect, the position fixing portion (13) attaches the tray portion (11) to one clamping portion (52) of the fixture (5).

[0143] According to this aspect, the auxiliary tray (1) can be integrated with the fixture (5).

[0144] In the auxiliary tray (1) according to the 16th aspect, in the 9th - 15th aspects, the mounting portion (51) has a holding portion (51a) for holding the partition (202).

[0145] According to this aspect, since the upper side of the top plate (201) of the furniture (200) is partitioned by the partition (202) held by the holding portion (51a), the usability of the furniture (200) can be improved.

[0146] The wiring duct fixing system (100) according to the 17th aspect includes a fixture (5) for fixing the wiring duct (2) to the top plate (201) of the furniture (200), and an auxiliary tray (1) according to any one of the 1st - 16th aspects.

[0147] According to this aspect, it is possible to improve the comfort of the work on the top plate (201) of the furniture (200) and reduce the force applied to the connection wires (21, 31, 4) between the wiring duct (2) fixed on the top plate (201) and the conversion device.

Explanation of Reference Numerals

[0148] 100 Wiring duct fixing system 1 Auxiliary tray 11 Tray portion 111 Bottom 112 Wall portion 112A First wall portion 112a Upper end portion (opposite surface portion) 112B Second wall portion 112C Third wall portion (reinforcing portion) 11a Notch for wiring 11b Notch for insertion 11c Guide portion 11d Window 13 Position fixing portion 131 Second clamping portion 131a Second lower surface portion 132 Mounting fitting 133 Screw 2 Wiring duct 21 First connection line 3 Converter 31 Second connection line 4 Joint 5 Fixture 51 Mounting part 51a Holding part 52 First clamping part 52a First bottom surface part 52b First bolt 52e First knob 200 Furniture 201 Ceiling board 202 Partition

Claims

1. A tray unit that houses a conversion device that converts power from an external power source into a predetermined power and supplies the converted power to a wiring duct fixed to the top plate of a furniture; A position fixing part that fixes the position of the tray unit below the top plate, and; The tray unit, A bottom part on which the conversion device is placed, A wall part that extends upward from the bottom part and surrounds the conversion device placed on the bottom part from all four sides of front, back, left, and right, and; An auxiliary tray.

2. The wall part has a wiring notch through which a connection line between the wiring duct and the conversion device passes, The auxiliary tray according to Claim 1.

3. A part of the wall part has a height exceeding the vertical thickness of the conversion device placed on the bottom part, The position fixing part fixes the upper end of the part of the wall part to the top plate, The auxiliary tray according to Claim 1.

4. The bottom part has a shape along a long rectangular shape, The wall part, Includes a first wall part that extends from a first end that is one of a pair of end parts along the longitudinal direction of the bottom part to a first height that is a height exceeding the thickness, The position fixing part fixes the upper end part of the first wall part to the top plate, The auxiliary tray according to Claim 3.

5. The wall part, A second wall part that extends from a second end that is the other of the pair of end parts to a second height less than the first height, and; The wall part further includes a pair of third wall parts that extend upward from a pair of third end parts sandwiched between both ends of each of the first end part and the second end part of the bottom part, The auxiliary tray according to Claim 4.

6. The pair of third wall parts extend from a part of the pair of third end parts on the first end part side to a height reaching the upper end part of the first wall part, The auxiliary tray according to Claim 5.

7. The position fixing part has a second lower surface part parallel to the top plate, The upper end part of the first wall part includes a facing part parallel to the top plate that extends toward the second wall part side, The position fixing part fixes the facing part to the lower side of the top plate in a state where the facing part faces the second lower surface part, The auxiliary tray according to Claim 5.

8. The upper end part further includes one or more guide parts that extend along the side surface of the top plate to a height not exceeding the upper surface of the top plate, The auxiliary tray according to Claim 7.

9. The wiring duct is fixed to the upper side of the top plate by a fixture having a long mounting portion to which the wiring duct is attached and a pair of clamping portions provided at both ends in the longitudinal direction of the mounting portion for clamping the top plate. A connection wire for electrically connecting the conversion device placed on the bottom portion and the wiring duct is wired to one of the pair of clamping portions of the fixture. The auxiliary tray according to claim 5.

10. The one clamping portion is a first clamping portion. The position fixing portion has a pair of second clamping portions that are arranged sandwiching the first clamping portion and clamp the top plate. The auxiliary tray according to claim 9.

11. The first clamping portion has a first lower surface portion parallel to the top plate, a first bolt passing through the first lower surface portion, and a first knob attached to the rear end of the first bolt. The first wall portion further has a window provided at a position overlooking the first knob of the first clamping portion. The auxiliary tray according to claim 10.

12. Each of the pair of second clamping portions has a second lower surface portion parallel to the top plate. The upper end portion of the first wall portion has a pair of facing portions parallel to the top plate extending toward the second wall portion side, and an insertion notch formed between the pair of facing portions and into which the first lower surface portion of the first clamping portion can be inserted. The pair of facing portions are joined facing the pair of second lower surface portions corresponding to the pair of second clamping portions in a state where the first lower surface portion of the first clamping portion is inserted into the insertion notch. The auxiliary tray according to claim 11.

13. The pair of second lower surface portions corresponding to the pair of second clamping portions are separate from each other. The auxiliary tray according to claim 12.

14. The pair of second lower surface portions corresponding to the pair of second clamping portions are integral with each other. The auxiliary tray according to claim 12.

15. The position fixing portion attaches the tray portion to the one clamping portion of the fixture. The auxiliary tray according to claim 9.

16. The mounting portion further has a holding portion for holding a partition. The auxiliary tray according to claim 9.

17. A fixture for fixing a wiring duct to the top plate of a furniture, and the auxiliary tray according to any one of claims 1 - 16, comprising a wiring duct fixing system.

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