Wiring duct system and furniture

Abstract

To provide a wiring duct system capable of easily attaching and detaching an adapter to and from a wiring duct even if the wiring duct is embedded into a base part.SOLUTION: An adaptor 2 to which a connector 8 is connected is attached to a wiring duct system 3 in order to supply a power to the connector 8 via the adaptor 2. The wiring duct system 3 comprises: a wiring duct 31 that contains an open part 32 extending in one direction; and an adaptor insertion port 33 that is connected with the open part 32 in one direction, includes a width that is wider than the width of the open part 32, and allows insertion of one part of the adaptor 2 along a direction perpendicular to one direction and a width direction of the open part 32; and a cover 7 that blocks the adaptor insertion port 33.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] FIELD OF THE DISCLOSURE This disclosure relates generally to wiring duct systems and fixtures, and more particularly to wiring duct systems and fixtures to which adapters are attached. [Background technology]

[0002] Patent Document 1 discloses a DC duct system. This DC duct system has a DC duct to which an adapter to be connected to a connector can be detached, and supplies DC power to the connector via the adapter.

[0003] Here, the DC duct has a conductive bar and a duct rail including a recess for housing the conductive bar. The adapter achieves electrical connection with the conductive bar and prevents the conductive bar from being pulled out of the recess by inserting the fixing rib into the recess and rotating the adapter by a predetermined angle around a rotation axis aligned with the insertion direction. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2022-086852 A Summary of the Invention [Problem to be solved by the invention]

[0005] In Patent Document 1, even if the DC duct is stored in the storage groove of the first fixing part, the adapter can be attached to and detached from the DC duct.

[0006] However, if the adapter has a structure that allows it to be attached and detached only from the end of the DC duct, there is a problem in that the DC duct must be removed from the storage groove of the first fixing part when attaching or detaching the adapter.

[0007] An object of the present disclosure is to provide a wiring duct system and fixture that allows an adapter to be easily attached and detached to a wiring duct even if the wiring duct is embedded in a base. [Means for solving the problem]

[0008] A wiring duct system according to one aspect of the present disclosure is provided with an adapter to which a connector is connected, and supplies power to the connector via the adapter. The wiring duct system includes a wiring duct including an opening extending in one direction and an adapter insertion port connected to the opening in the one direction, having a width greater than a width of the opening, and into which a part of the adapter can be inserted along a direction perpendicular to the one direction and the width direction of the opening, and a cover that closes the adapter insertion port.

[0009] A fixture according to one aspect of the present disclosure comprises the wiring duct system and the adapter. Effect of the Invention

[0010] According to the present disclosure, even if the wiring duct is embedded in the base, the adapter can be easily attached and detached to the wiring duct. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a perspective view of the main part (including a partial cross section) of an adapter and a wiring duct system according to the present embodiment in a power supply state. [Diagram 2] FIG. 2 is a perspective view (including a partial cross section) of the adapter and the main part of the wiring duct system in a state where no power is supplied. [Diagram 3] FIG. 3 is a side view (including a partial cross section) of the adapter and the main part of the wiring duct system in a power supply state. [Figure 4] FIG. 4 is a side view (including a partial cross section) of the adapter and the main part of the wiring duct system in a state where no power is supplied. [Diagram 5]FIG. 5 is a rear view of the main part of the adapter in a power supply state. [Figure 6] FIG. 6 is a rear view of the main parts of the adapter in a state where no power is being supplied. [Figure 7] FIG. 7 is a side view of a main portion of an adapter according to a modified example (the wiring duct system is omitted) in a power supply state. [Figure 8] FIG. 8 is a side view of the main part of the adapter (without the wiring duct system) in a state where no power is supplied. [Figure 9] FIG. 9 is a rear view of the main part of the adapter in a power supply state. [Figure 10] FIG. 10 is a rear view of the main parts of the adapter in a state where no power is being supplied. [Figure 11] FIG. 11 is a rear view of the main parts of the adapter according to the reference example in a power supply state. [Figure 12] FIG. 12 is a rear view of the main parts of the adapter in a state where no power is being supplied. [Figure 13] FIG. 13 is a perspective view showing the fixture according to this embodiment. [Figure 14] FIG. 14 is a block diagram showing an example of the configuration of a system that supplies power to an electric device using the adapter and wiring duct system according to this embodiment. [Figure 15] FIG. 15 is a perspective view showing a main part of the wiring duct system according to the present embodiment. [Figure 16] FIG. 16 is a perspective view showing a main part (a base part is omitted) of the wiring duct system. [Figure 17] FIG. 17 is a perspective view showing the wiring duct system (without the base) with the cover and end caps separated therefrom. [Figure 18] FIG. 18 is a front view showing a main part (a base and an end cap are omitted) of the wiring duct system. [Figure 19] FIG. 19 is a front view showing the wiring duct system (without the base) with the cover and end caps separated therefrom. [Figure 20]FIG. 20 is a side view showing a main part (a base and an end cap are omitted) of the wiring duct system. [Figure 21] FIG. 21 is a bottom view showing the wiring duct system (without the base and end caps) with the cover separated therefrom. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] 1. Overview The wiring duct system 3 and the fixture 1 according to the present embodiment will be described below with reference to the drawings. The following embodiments are merely a part of various embodiments of the present disclosure. The following embodiments can be modified in various ways depending on the design, etc., as long as the object of the present disclosure can be achieved. The figures referred to in the following embodiments are schematic diagrams, and the size and thickness ratios of the components in the figures do not necessarily reflect the actual dimensional ratios. The following embodiments, modified examples, and reference examples may be realized by appropriately combining them.

[0013] In the following drawings, arrows indicating the up-down, left-right, and front-rear directions are merely shown to facilitate understanding of the explanation and have no substance. In addition, unless otherwise specified below, the "width direction" corresponds to the up-down direction, the "longitudinal direction" and "one direction" correspond to the left-right direction, and the "depth direction" corresponds to the front-rear direction.

[0014] 14, an adapter 2 is attached to the wiring duct system 3 according to this embodiment. Specifically, the adapter 2 is attached to the wiring duct 31 of the wiring duct system 3. Furthermore, a connector 8 is connected to the adapter 2. Then, the wiring duct system 3 supplies power to the connector 8 via the adapter 2.

[0015] One of the advantages of the wiring duct system 3 of this embodiment shown in Figures 15 to 21 is that the adapter 2 can be easily attached and detached to the wiring duct 31 even if the wiring duct 31 is embedded in the base 4.

[0016] Here, from the viewpoint of attachment / detachment to / from the wiring duct 31, the adapter 2 can be roughly divided into two types. The first adapter 2 has a structure that makes it difficult to attach to the wiring duct 31 from the front side of the wiring duct 31 (the surface where the opening 32 is formed). On the other hand, the second adapter 2 has a structure that makes it easy to attach to the wiring duct 31 from the front side of the wiring duct 31. Hereinafter, the first adapter 2 may be referred to as the "adapter 2 according to this embodiment," and the second adapter 2 may be referred to as the "adapter 2 according to the reference example." The wiring duct system 3 according to this embodiment is compatible with these two types of adapter 2.

[0017] Before describing the outline of the wiring duct system 3 according to this embodiment, the adapter 2 according to this embodiment will be described. Note that the adapter 2 according to a reference example will be described in Section "3. Modifications".

[0018] As shown in Fig. 1, the adapter 2 according to this embodiment is attached to a wiring duct 31 of a wiring duct system 3 that supplies electric power. Furthermore, a connector 8 is connected to the adapter 2 as shown in Fig. 14. Then, the wiring duct system 3 sends electric power from the wiring duct 31 to the connector 8 via the adapter 2. This allows an electric device 9 connected to the connector 8 to receive electric power.

[0019] 1 to 6 is characterized in that it is difficult to remove the adapter 2 from the wiring duct 31 in the front-rear direction. Conversely, therefore, it is also difficult to attach the adapter 2 to the wiring duct 31 in the front-rear direction.

[0020] 1, 3, and 5 show the power supply state. The power supply state is a state in which power is supplied from the wiring duct 31 to the adapter 2. That is, as shown in FIG. 3, the electrode 34 of the wiring duct 31 and the power receiving terminal 22 of the adapter 2 are electrically connected. In this power supply state, the fixing rib 23 of the adapter 2 is fitted into the fitting portion 37 of the wiring duct 31. In other words, as shown in FIG. 5, the length L23 between both ends of the fixing rib 23 of the adapter 2 is longer than the width W32 of the opening 32 of the wiring duct 31. Therefore, it is difficult to pull the adapter 2 forward with respect to the wiring duct 31.

[0021] 2, 4, and 6 show a power-off state. The power-off state is a state in which no power is supplied from the wiring duct 31 to the adapter 2. That is, as shown in FIG. 4, the electrode 34 of the wiring duct 31 and the power receiving terminal 22 of the adapter 2 are not electrically connected. Even in this power-off state, the fixing rib 23 of the adapter 2 is fitted into the fitting portion 37 of the wiring duct 31. In other words, as shown in FIG. 6, the length L23 between both ends of the fixing rib 23 of the adapter 2 is longer than the width W32 of the opening 32 of the wiring duct 31. Therefore, it is difficult to pull the adapter 2 forward with respect to the wiring duct 31.

[0022] In this manner, with the adapter 2 according to this embodiment, it is difficult to pull the adapter 2 forward with respect to the wiring duct 31 in either the power supply state or the power non-supply state.

[0023] One of the features of the wiring duct system 3 according to this embodiment is that it employs an adapter insertion opening 33 in order to obtain the above-mentioned advantages (see Figs. 15 to 21). The adapter insertion opening 33 is an opening that is used when attaching or detaching the adapter 2. Before and after the attachment or detachment of the adapter 2, the adapter insertion opening 33 is closed by the cover 7.

[0024] When attaching or detaching the adapter 2, the cover 7 is removed (see FIG. 17). This exposes the adapter insertion port 33. Although the end cap 5 is also removed in FIG. 17, it is not necessary to attach or detach the end cap 5 when attaching or detaching the adapter 2.

[0025] The adapter 2 according to this embodiment can be attached or detached from the front of the wiring duct 31 by utilizing the adapter insertion port 33. When attaching or detaching the adapter 2, it is not necessary to remove the wiring duct 31 (including the end cap 5) from the base 4. As described above, the adapter insertion port 33 is closed by the cover 7 before and after the adapter 2 is attached or detached, so the aesthetic appearance is not marred. When attaching or detaching the adapter 2 according to the reference example, there is no need to remove or attach the cover 7 in the first place.

[0026] Therefore, according to this embodiment, even if the wiring duct 31 is embedded in the base portion 4, the adapter 2 can be easily attached to and detached from the wiring duct 31.

[0027] 2.Details (1) Adapter First, an adapter 2 according to this embodiment will be described with reference to FIGS.

[0028] The adapter 2 includes a housing 24, an operation unit 25, an attachment protrusion 26, two power receiving terminals 22, a spring housed in the housing 24, and a lid portion 27. The adapter 2 further includes a pair of connection connectors (USB sockets) and a circuit board, etc., housed in the housing 24. Here, the housing 24, the attachment protrusion 26, the two power receiving terminals 22, the pair of connection connectors, the circuit board, the lid portion 27, etc. of the adapter 2 configure the adapter main body 20.

[0029] The housing 24 is made of, for example, resin. The housing 24 is in the shape of a hollow box with one side (rear side) open. The lid portion 27 is attached to the housing 24 by screwing or the like so that the open side of the housing 24 is covered by the lid portion 27 (see FIGS. 5 and 6). The outer shape of the housing 24 is a rectangular parallelepiped. The housing 24 has a first socket 241 and a second socket 242. The first socket 241 is a socket for a USB Type-A plug as the connector 8 (see FIG. 14). The second socket 242 is a socket for a USB Type-C plug as the connector 8. That is, the first socket 241 is of a different standard from the second socket 242. The first socket 241 is of a different size from the second socket 242. In the housing 24, the pair of connection connectors are mounted on a circuit board so as to correspond one-to-one with the first socket 241 and the second socket 242. The connector 8 inserted into the first socket 241 or the second socket 242 is connected to the corresponding one of the pair of connection connectors and is electrically connected to the power receiving terminal 22 via the circuit board.

[0030] The first socket 241 and the second socket 242 are provided on a surface (connector mounting surface 201: the front surface in FIG. 1 etc.) facing away from the wiring duct 31 when the adapter 2 is attached to the wiring duct 31. When the adapter 2 is attached to the wiring duct 31, the first socket 241 and the second socket 242 are lined up one above the other, as shown in FIG. 1 etc.

[0031] The lid portion 27 is made of, for example, resin. A mounting protrusion 26 is provided on the rear surface of the lid portion 27 (see Figs. 3 to 6). The lid portion 27 and the mounting protrusion 26 are formed as a continuous unit. The mounting protrusion 26 includes a shaft portion 21 and a fixing rib 23.

[0032] The shaft portion 21 protrudes from the housing 24 on the side opposite to the connector mounting surface 201. The shaft portion 21 is inserted into the opening 32 of the wiring duct 31 (see Figs. 3 and 4). The central axis of the shaft portion 21 roughly coincides with the rotation axis B1. The adapter 2 can be rotated a predetermined angle (e.g., 90 degrees) with respect to the wiring duct 31 about the rotation axis B1. Note that the rotation axis B1 is an imaginary axis.

[0033] The fixed rib 23 protrudes from the side surface of the shaft portion 21. Specifically, as shown in Fig. 3 to Fig. 6, the fixed rib 23 protrudes from the shaft portion 21 with the shaft portion 21 as the center. In other words, the fixed rib 23 protrudes radially outward from an imaginary circle centered on the rotation axis B1.

[0034] In this embodiment, the fixed rib 23 protrudes from the entire circumference of the shaft portion 21. The fixed rib 23 has a thick portion 234 and a thin portion 235 (see Figs. 3 to 6). The thin portion 235 is thinner than the thick portion 234. The thin portion 235 exists on a part of the outer circumference of the fixed rib 23. The thin portion 235 includes a first edge portion 231, a second edge portion 232, and a third edge portion 233. The first edge portion 231 is a portion that extends in one direction with a constant width. The second edge portion 232 is a portion that has the same width as the first edge portion 231 and extends in a direction perpendicular to the first edge portion 231. The third edge portion 233 is a portion that has the same width as the first edge portion 231 and the second edge portion 232 and forms an arc shape that smoothly connects the first edge portion 231 and the second edge portion 232.

[0035] Furthermore, in this embodiment, when no power is supplied (i.e., in the case of the non-power supply state shown in Figures 4 and 6), when viewed from the depth direction (front-to-back direction) perpendicular to both the longitudinal direction and the width direction, the length L23 between both ends of the fixed rib 23 in the width direction is longer than the width W32 of the opening 32 (see Figure 6).

[0036] More specifically, in this embodiment, a length L23 between both ends of the fixed rib 23 in any radial direction centered on the shaft portion 21 is longer than a width W32 of the opening 32. In other words, when viewed along the front-rear direction, a distance between two intersections between any straight line intersecting the rotation axis B1 and the outer periphery of the fixed rib 23 is longer than the width W32 of the opening 32.

[0037] The two power receiving terminals 22 protrude in opposite directions from the shaft portion 21. Specifically, in a plane perpendicular to the front-rear direction, the two power receiving terminals 22 protrude in opposite directions from each other (see FIGS. 5 and 6). A length L23 between both ends of the fixing rib 23 in the direction in which the two power receiving terminals 22 protrude (the up-down direction in FIG. 5) is longer than a width W32 of the opening 32. The two power receiving terminals 22 are electrically connected to the circuit board. The adapter 2 receives power from the wiring duct 31 through the two power receiving terminals 22 (see FIG. 3).

[0038] The adapter 2 has a restriction recess 28 (see FIGS. 5 and 6). The restriction recess 28 is configured by a recess formed in the rear end face of the housing 24 and in the surface of the cover portion 27. Specifically, the restriction recess 28 includes a first recess 281 and a second recess 282.

[0039] The first recess 281 is formed in a partial area of ​​the rear end face of the housing 24, stepping down in a direction approaching the connector mounting surface 201. For ease of understanding, the area of ​​the first recess 281 is shown by thick dot hatching in Figures 5 and 6.

[0040] The second recess 282 is formed such that a partial area of ​​the surface of the cover portion 27 is stepped down in a direction approaching the connector mounting surface 201. For ease of understanding, in Figures 5 and 6, the area of ​​the second recess 282 is shown by light dot hatching and a portion surrounded by light dot hatching. The bottom surface of the first recess 281 and the bottom surface of the second recess 282 are substantially flush with each other.

[0041] The operation unit 25 is configured to be insertable and removable in the opening 32, and configured to restrict rotation of the adapter 2 by inserting it into the opening 32. The operation unit 25 is held by the housing 24. The operation unit 25 is made of, for example, resin. The operation unit 25 is plate-shaped. The operation unit 25 has a non-slip portion 251 on its surface, and is held by the housing 24 in a manner in which the surface with the non-slip portion 251 is exposed from one side of the housing 24. The operation unit 25 can slide in a predetermined direction (front-rear direction in FIG. 1) by applying force to the non-slip portion 251 with a person's fingertip or the like. The operation unit 25 is held by the housing 24 in a state in which the return force of a spring stored in the housing 24 acts in a direction (rearward) away from the connector mounting surface 201. Therefore, when no force is applied to the operation unit 25, the tip portion (claw portion 250) of the operation unit 25 is in a state of protruding from the housing 24 to the opposite side to the connector mounting surface 201 side. When a force is applied forward against the force of the spring by a fingertip or the like to the anti-slip portion 251, the operation portion 25 slides forward.

[0042] The adapter 2 further includes a power converter. A plurality of electronic components constituting the power converter are mounted on a circuit board inside the housing 24. The power converter converts the power received at the two power receiving terminals 22 into power of a desired voltage. The power converted by the power converter is output from a pair of connecting connectors (USB sockets). An electric device 9 (see FIG. 14) can receive power via a cable including a connector 8 (see FIG. 14) that is inserted into the first socket 241 or the second socket 242 and connected to the connecting connector.

[0043] (2) Wiring duct system Next, the wiring duct system 3 according to this embodiment will be described with reference to FIGS.

[0044] The wiring duct system 3 is used, for example, as a part constituting a fixture 1 (described later). The wiring duct system 3 includes a wiring duct 31 and a cover 7. The wiring duct system 3 may further include an end cap 5. Note that, although the base 4 is illustrated in FIG. 15, the base 4 will be described later.

[0045] The wiring duct 31 is a member extending in one direction. Thus, the wiring duct 31 extends in the longitudinal direction (the left-right direction in this embodiment). The wiring duct 31 has a duct rail 35 and a pair of electrodes 34. The duct rail 35 includes a first rail 351 and two second rails 352.

[0046] First rail 351 has a rectangular cylindrical shape. First rail 351 is made of, for example, metal. First rail 351 extends in the longitudinal direction (left-right direction).

[0047] The first rail 351 includes an opening 32. The opening 32 extends in one direction. That is, the opening 32 is formed along the longitudinal direction (left-right direction) of the duct rail 35. More specifically, the opening 32 is formed across both ends of the longitudinal direction of the duct rail 35. In this way, the opening 32 is formed in the wiring duct 31 and extends in the longitudinal direction (left-right direction) of the wiring duct 31.

[0048] In this embodiment, the opening 32 opens toward the front. The width W32 of the opening 32 is narrower than the width W31 of the wiring duct 31 (see FIGS. 5 and 6). The width W31 of the wiring duct 31 is equal to the width of the duct rail 35 and the width of the first rail 351.

[0049] The first rail 351 further includes an adapter insertion opening 33. The adapter insertion opening 33 is an opening into which the adapter 2 is inserted. The adapter insertion opening 33 is used when attaching or detaching the adapter 2 to or from the wiring duct 31. Note that before and after the attachment or detachment of the adapter 2, the adapter insertion opening 33 is closed by a cover 7 (see FIG. 15).

[0050] The adapter insertion opening 33 is connected to the opening 32 in one direction (left-right direction). In this embodiment, the adapter insertion opening 33 is connected to the openings 32 on both the left and right sides. The adapter insertion opening 33 may be present at one end (right end or left end) of the opening 32. For example, when the adapter insertion opening 33 is present at the right end of the opening 32, there is no opening 32 to the right of the adapter insertion opening 33, so the adapter insertion opening 33 is connected to only the opening 32 on the left side. Conversely, when the adapter insertion opening 33 is present at the left end of the opening 32, there is no opening 32 to the left of the adapter insertion opening 33, so the adapter insertion opening 33 is connected to only the opening 32 on the right side.

[0051] The adapter insertion opening 33 opens forward (see FIG. 17). The width W33 of the adapter insertion opening 33 is wider than the width W32 of the opening 32 (see FIG. 19). Thus, the adapter insertion opening 33 has a width wider than the width W32 of the opening 32. FIG. 20 illustrates the location where the opening 32 exists, but where the adapter insertion opening 33 exists, there is no portion with dot hatching. In other words, the width W33 of the adapter insertion opening 33 is equal to the distance between the bottom surfaces 373 of the fitting portions 37 facing each other in the vertical direction.

[0052] The first rail 351 further has a restricting protrusion 39. The restricting protrusion 39 is a protrusion. The restricting protrusion 39 is provided on the lower part of the first rail 351. The restricting protrusion 39 is inserted into the restricting recess 28 of the adapter 2.

[0053] The wiring duct 31 has end surface openings 36 at both ends in the longitudinal direction (left-right direction) (see FIG. 17). One end surface opening 36 opens to the right, and the other end surface opening 36 opens to the left. The two end surface openings 36 and the opening 32 are connected to each other.

[0054] As shown in FIGS. 3 and 4, the first rail 351 further includes two fitting portions 37 and two mounting grooves .

[0055] Each of the two fitting portions 37 is a groove. The two fitting portions 37 are provided on the inner surface of the duct rail 35 (first rail 351). The two fitting portions 37 face each other in the up-down direction. The two fitting portions 37 are formed along the longitudinal direction (left-right direction) of the duct rail 35. More specifically, the two fitting portions 37 are formed across both ends of the duct rail 35 in the longitudinal direction.

[0056] As shown in FIGS. 3 and 4, the two fitting portions 37 have different widths (groove widths). The width of one (upper) fitting portion 37 is approximately equal to the thickness of the thick portion 234 of the fixed rib 23. The other (lower) fitting portion 37 has a wide portion 371 and a narrow portion 372. The narrow portion 372 is narrower than the wide portion 371. The narrow portion 372 is connected to the wide portion 371 in the up-down direction. The width of the wide portion 371 is approximately equal to the thickness of the thick portion 234 of the fixed rib 23. The width of the narrow portion 372 is approximately equal to the thickness of the thin portion 235 of the fixed rib 23.

[0057] The two fitting portions 37 fit into the fixing ribs 23 of the adapter 2. This allows the adapter 2 to be attached to the wiring duct 31. That is, the duct rail 35 (first rail 351) includes an adapter attachment portion (two fitting portions 37) for attaching the adapter 2. The procedure for attaching the adapter 2 to the wiring duct 31 will be described later.

[0058] The two mounting grooves 38 are provided on the inner surface of the duct rail 35 (first rail 351). The two mounting grooves 38 face each other in the up-down direction. Of the two fitting portions 37 and the two mounting grooves 38, the two fitting portions 37 are provided closer to the opening 32. The two mounting grooves 38 are formed along the longitudinal direction (left-right direction) of the duct rail 35. More specifically, the two mounting grooves 38 are formed across both ends of the duct rail 35 in the longitudinal direction.

[0059] The two mounting grooves 38 correspond one-to-one with the two second rails 352. The corresponding second rails 352 are fitted into each mounting groove 38. In this way, the two second rails 352 are attached to the first rail 351.

[0060] Each of the two second rails 352 extends in the longitudinal direction (left-right direction). The two second rails 352 face each other in the up-down direction. The shape of the second rail 352 in a cross section perpendicular to the left-right direction is U-shaped. The second rail 352 is electrically insulating. The second rail 352 is formed of a synthetic resin material such as PVC (polyvinyl chloride). The second rail 352 holds the electrode 34 on its inner side.

[0061] The pair of electrodes 34 are provided at both ends of the width direction (vertical direction in this embodiment) of the wiring duct 31. In this way, the pair of electrodes 34 face each other in the vertical direction. Each of the pair of electrodes 34 extends in the longitudinal direction (horizontal direction). Each of the pair of electrodes 34 is provided from the right end to the left end of the duct rail 35. The pair of electrodes 34 are electrically connected to the corresponding wiring W1 (see FIG. 14) via the feed-in 91. One of the pair of electrodes 34 of the wiring duct 31 is electrically connected to the positive electrode side wiring W1, and the other is electrically connected to the negative electrode side wiring W1. Thus, DC power is supplied to the pair of electrodes 34. The two power receiving terminals 22 of the adapter 2 are supplied with power by being connected to the pair of electrodes 34.

[0062] The cover 7 is a member that closes the adapter insertion opening 33. In particular, before and after the attachment and detachment of the adapter 2, the cover 7 closes the adapter insertion opening 33. The cover 7 includes a cover portion 71 and an insertion portion 72. The cover portion 71 and the insertion portion 72 are formed as a continuous unit.

[0063] The cover portion 71 is a portion that closes the adapter insertion opening 33. The cover portion 71 has a rectangular plate shape. The width of the cover portion 71 is the width W7 of the cover 7, and the width W7 of the cover 7 is equal to the width W31 of the wiring duct 31 (see FIG. 18 ). In the left-right direction, the length L71 of the cover portion 71 is longer than the length L33 of the adapter insertion opening 33.

[0064] The insertion portion 72 is a portion that is inserted into the adapter insertion port 33. The insertion portion 72 protrudes from a surface of the cover portion 71 that faces the wiring duct 31 (the rear surface in this embodiment). In this embodiment, the insertion portion 72 is formed on the rear surface of the cover portion 71 toward the right.

[0065] The width W72 of the insertion portion 72 is almost equal to the width W32 of the opening 32. Therefore, the insertion portion 72 can slide toward the opening 32. In this embodiment, the insertion portion 72 inserted into the adapter insertion port 33 can physically slide into the openings 32 on both the left and right sides. However, in this embodiment, the insertion portion 72 is formed on the right side of the rear surface of the cover portion 71. Therefore, if the insertion portion 72 inserted into the adapter insertion port 33 is slid into the opening 32 on the left side, there is a risk that the adapter insertion port 33 cannot be closed by the cover portion 71. Therefore, in this embodiment, the insertion portion 72 inserted into the adapter insertion port 33 is slid into the opening 32 on the right side. The direction in which the insertion portion 72 slides is appropriately set depending on the position of the insertion portion 72 in the cover portion 71.

[0066] In the left-right direction, the length L72 of the insertion portion 72 is shorter than the length L33 of the adapter insertion opening 33 (see FIG. 21). The length L72 of the insertion portion 72 may be equal to the length L33 of the adapter insertion opening 33. In the left-right direction, the length L2 of the insertion portion 72 is shorter than the length L71 of the cover portion 71 (see FIG. 21).

[0067] Fixing holes 74 are formed in the cover 7. The fixing holes 74 are holes used to fix the cover 7 to the wiring duct 31. The fixing holes 74 open in the front of the cover portion 71 and open in the front-rear direction so as to penetrate the cover portion 71 and the insertion portion 72. Special screws are screwed into the fixing holes 74 using a special tool. The special screws refer to screws having a shape that cannot be turned with general-purpose tools such as normal screwdrivers (e.g., Phillips head screwdrivers, flat head screwdrivers, etc.). An example of a special screw is a hexalobular socket screw. The special tool is a tool that can turn special screws. In this way, the cover 7 is attached to the wiring duct 31 using the special tool.

[0068] Two insertion pieces 73 are formed in the insertion portion 72. The two insertion pieces 73 are formed on the upper and lower sides of the insertion portion 72, respectively. The two insertion pieces 73 extend in the left-right direction. The two insertion pieces 73 correspond one-to-one to the two fitting portions 37 of the first rail 351. The upper insertion piece 73 fits into the upper fitting portion 37, and the lower insertion piece 73 fits into the lower fitting portion 37.

[0069] The end cap 5 is attached to one end (the right end in this embodiment) of the wiring duct 31. As a result, the end cap 5 closes the end face opening 36 at one end of the wiring duct 31. The end cap 5 includes a closing portion 51, an insertion portion 54, and two insertion pieces 55. A feed-in 91 is attached to the other end of the wiring duct 31 (see FIG. 14).

[0070] The outer peripheral shape of the blocking portion 51 is substantially the same as the outer peripheral shape of the wiring duct 31 when viewed in the left-right direction. In this embodiment, the blocking portion 51 has a rectangular plate shape. The width of the blocking portion 51 is equal to the width of the end cap 5. The end cap 5 has the same width as the width W31 of the wiring duct 31.

[0071] The insertion portion 54 is a portion that is inserted into the inside of the wiring duct 31 from the end surface opening 36 of the wiring duct 31. The insertion portion 54 is formed on the surface of the blocking portion 51 facing leftward.

[0072] A fixing hole 56 is formed in the insertion portion 54. The fixing hole 56 is a hole used to fix the end cap 5 to the wiring duct 31. The fixing hole 56 is open in the front-rear direction. A special screw is preferably screwed into the fixing hole 56 using a special tool. An ordinary screw other than the special screw may also be screwed into the fixing hole 56 using a general-purpose tool.

[0073] The two insertion pieces 55 are formed on the upper and lower sides of the insertion portion 54, respectively. The two insertion pieces 55 extend in the left-right direction. The two insertion pieces 55 correspond one-to-one to the two fitting portions 37 of the first rail 351. The upper insertion piece 55 fits into the upper fitting portion 37, and the lower insertion piece 55 fits into the lower fitting portion 37.

[0074] (3) Fixtures Next, the fixture 1 according to this embodiment will be described with reference to Figs.

[0075] The fixture 1 includes a wiring duct system 3 and an adapter 2. Note that Fig. 13 illustrates the fixture 1 in a state where the adapter 2 has been removed from the wiring duct system 3.

[0076] Here, fixtures 1 is a general term for furniture, fixtures, and other equipment used in residential or non-residential buildings. Examples of fixtures 1 are desks, tables, workbenches, and the like used as platforms for placing items. Other examples of fixtures 1 are shelves, boxes, dressers, beds, whiteboards, screens, partitions, benches, and the like.

[0077] In the following, a case where the fixture 1 is a desk 10 will be described, but it is not intended to limit the fixture 1 to a desk 10.

[0078] The fixture 1 further includes a desk 10, a duct fixture 11, and a partition 12.

[0079] The desk 10 has a top board 13 that is rectangular in plan view, two legs 14, and two support bases 15. One of the two legs 14 protrudes downward from near the right end of the top board 13, and the other protrudes downward from near the left end of the top board 13. The two support bases 15 correspond one-to-one to the two legs 14. Each support base 15 is connected to the lower end of the corresponding leg 14 and supports the leg 14.

[0080] The duct fixture 11 is a member for fixing the wiring duct system 3 to the desk 10. The duct fixture 11 has a first fixing portion 111 and a second fixing portion 112.

[0081] The first fixing portion 111 is a member for holding the wiring duct system 3. The first fixing portion 111 extends in the left-right direction, and is disposed so as to separate the desk 10 from the front and rear.

[0082] The second fixing part 112 is a member for fixing the first fixing part 111 to the desk 10. The second fixing part 112 is connected to both the left and right ends of the first fixing part 111. The second fixing part 112 includes a clamp mechanism, and is fixed to the desk 10 by clamping the desk 10 in the vertical direction with this clamp mechanism.

[0083] The partition 12 has a rectangular plate shape and is held by the duct fixture 11. The partition 12 separates the front and rear of the desk 10. In this embodiment, the partition 12 is translucent. The material of the partition 12 is, for example, acrylic resin.

[0084] Next, an example of a power supply system for the fixture 1 will be described with reference to Fig. 14. The power supply system is a system that supplies power to an electric device 9 using an adapter 2 and a wiring duct system 3.

[0085] There is no particular limitation on the type of the electrical device 9. Examples of the electrical device 9 include computer terminals (personal computers, smartphones, tablet terminals, etc.), computer terminal accessories (monitors, speakers, microphones, etc.), lighting equipment (desk lights, etc.), network cameras, sensors (temperature sensors, humidity sensors, illuminance sensors, etc.), game machines, and air conditioners (desk fans, etc.).

[0086] 14, a switching hub 93 and a splitter 94 are provided in a facility where an electrical device 9 is used. The switching hub 93 is electrically connected to a power source 92. The power source 92 supplies AC power to the switching hub 93. The power source 92 is, for example, a commercial power source or a distributed power source.

[0087] The switching hub 93 is a PoE switching hub that supports PoE (Power over Ethernet). The switching hub 93 is electrically connected to a splitter 94 via a LAN (Local Area Network) cable. The switching hub 93 can also be electrically connected to devices that support PoE. Examples of PoE-compatible devices include computer terminals, network cameras, IP (Internet Protocol) telephones, and wireless access points. The switching hub 93 can transmit and receive PoE signals that include data and power (DC power) between the devices electrically connected to the switching hub 93.

[0088] The splitter 94 is a PoE splitter that supports PoE. The splitter 94 separates the PoE signal received from the switching hub 93 into data and power (DC power). The splitter 94 supplies the power separated from the PoE signal to a device that does not support PoE. As an example, the splitter 94 supplies the power separated from the PoE signal to one or more electrical devices 9 that do not support PoE via the wiring duct system 3.

[0089] The splitter 94 transmits a data signal including the data separated from the PoE signal to a non-PoE compatible device.

[0090] The DC power output terminal of the splitter 94 is electrically connected to a first end of each of the two wirings W1. The two wirings W1 are a positive wiring and a negative wiring. The two wirings W1 correspond one-to-one to the two electrodes 34 of the wiring duct 31. The second end of each of the two wirings W1 is electrically connected to the corresponding electrode 34 via the feed-in 91. The adapter 2 can be connected to the wiring duct 31, and an electric device 9 can be electrically connected to each electrode 34 via the adapter 2.

[0091] As a result, the electric device 9 can receive power supplied from the wiring W1 via the electrode 34 and the adapter 2. A user can use the electric device 9 on or around the desk 10 (see FIG. 13).

[0092] (4) Attaching and detaching the adapter to the wiring duct Next, attachment and detachment of the adapter 2 to the wiring duct 31 will be described with reference to Figures 15 to 20. The base 4 shown in Figures 15 to 20 corresponds to the first fixing part 111 of the fixture 1 shown in Figure 13. For convenience of explanation, the base 4 is illustrated as a rectangular parallelepiped, but is not limited to this shape.

[0093] A storage groove 41 is formed on a surface (the front surface in this embodiment) of the base 4. The storage groove 41 is recessed rearward.

[0094] The storage groove 41 is a groove in which the wiring duct 31 is stored. The wiring duct 31 stored in the storage groove 41 is exposed from the base 4. Specifically, the front surface of the wiring duct 31 (the surface on which the opening 32 and the adapter insertion port 33 are formed) is exposed from the base 4. More specifically, the surface of the wiring duct 31 including the opening 32 and the adapter insertion port 33 is exposed without protruding from the base 4. An end cap 5 (front portion) attached to the wiring duct 31 is also exposed from the base 4.

[0095] The storage groove 41 extends in the left-right direction. The width of the storage groove 41 is approximately equal to the width W31 of the wiring duct 31. The depth of the storage groove 41 is approximately equal to the length of the wiring duct 31 in the front-rear direction. In this manner, the wiring duct 31 does not protrude from the base 4 except for the restricting protrusion 39. The wiring duct 31 is fixed in the storage groove 41 by screws or the like. The end cap 5 attached to the wiring duct 31 also does not protrude from the base 4.

[0096] The procedure for attaching the adapter 2 to the wiring duct 31 will now be described.

[0097] 15 , at the start of the installation work of the adapter 2, the wiring duct 31 and the end cap 5 are embedded in the base 4. The cover 7 is attached to the wiring duct 31. The cover 7 protrudes slightly from the base 4, but the front surface of the cover part 71 and the front surface of the base 4 are parallel to each other.

[0098] First, the cover 7 is slid to the left until the insertion portion 72 of the cover 7 reaches the adapter insertion opening 33. After that, the cover 7 is pulled out forward from the adapter insertion opening 33 (see the arrow in FIG. 17 indicating the movement direction of the cover 7). Since the length L33 of the adapter insertion opening 33 is longer than the length L72 of the insertion portion 72 of the cover 7 (see FIG. 21), the cover 7 can be easily pulled out from the adapter insertion opening 33.

[0099] Next, a part of the adapter 2 is inserted into the adapter insertion opening 33. That is, a part of the adapter 2 is inserted into the adapter insertion opening 33 along one direction and a direction (front-rear direction) perpendicular to the width direction of the opening 32. As described above, the part of the adapter 2 is a part (the mounting protrusion 26) that exists behind the rear surface of the cover part 27. Here, the fitting part 37 of the wiring duct 31 is open at the adapter insertion opening 33 (see FIG. 19). Therefore, the fixing rib 23 of the adapter 2 can be disposed in the fitting part 37 of the wiring duct 31 without interference between the fixing rib 23 of the adapter 2 and the edge of the opening 32 of the wiring duct 31. Then, the adapter 2 is moved in the left-right direction to a predetermined position of the wiring duct 31 (a position desired by the user). In FIG. 17, the adapter 2 is moved to the left side, but it may be moved to the right side. By moving the adapter 2 from the adapter insertion opening 33 to the opening 32 on the left or right side, the fixing rib 23 of the adapter 2 can be inserted and fitted into the fitting part 37 of the wiring duct 31.

[0100] When moving the adapter 2 in the left-right direction, it is preferable to move the adapter 2 with the two power receiving terminals 22 positioned along the longitudinal direction (left-right direction) in order to avoid wear on the two power receiving terminals 22. That is, since this state is a state in which no power is supplied (see FIG. 4), the two power receiving terminals 22 are not in contact with the electrodes 34 and do not receive power supply.

[0101] When a part of the adapter 2 is inserted through the adapter insertion opening 33 of the wiring duct 31, the thick portion 234 of the fixing rib 23 is disposed in the wide portion 371 of the fitting portion 37, and the thin portion 235 of the fixing rib 23 is disposed in the narrow portion 372 of the fitting portion 37 (see FIG. 4). If the orientation of the adapter 2 is incorrect, the thick portion 234 of the fixing rib 23 will interfere with the narrow portion 372 of the fitting portion 37, and the adapter 2 cannot be moved from the adapter insertion opening 33 to the left or right opening 32.

[0102] For the same purpose as above, when a part of the adapter 2 is inserted from the adapter insertion opening 33 of the wiring duct 31, the restricting protrusion 39 of the wiring duct 31 is inserted into the restricting recess 28 (see FIG. 4). If the orientation of the adapter 2 is incorrect, the restricting protrusion 39 will interfere with an area on the rear surface of the adapter 2 that protrudes one step further than the restricting recess 28, and the adapter 2 cannot be moved from the adapter insertion opening 33 to the left or right opening 32. In other words, the restricting recess 28 and the restricting protrusion 39 restrict the orientation of the adapter 2.

[0103] Next, as shown in FIG. 2 (the base 4 and the adapter insertion port 33 are omitted), the adapter 2 is moved to a predetermined position in the wiring duct 31, and then the adapter 2 is rotated 90 degrees around the rotation axis B1 (see FIG. 1). This transitions from the power non-supply state shown in FIG. 4 to the power supply state shown in FIG. 3. That is, the two power receiving terminals 22 come into contact with the electrodes 34 and receive the supply of power. Furthermore, as shown in FIGS. 1 and 3, the claws 250 of the operation unit 25 are inserted into the opening 32 of the wiring duct 31, thereby restricting the rotation of the adapter 2 (housing 24).

[0104] Next, the cover 7 is moved in the direction opposite to the arrow in Fig. 17. That is, after inserting the cover 7 into the adapter insertion opening 33, the insertion piece 73 of the cover 7 is inserted into the fitting portion 37 of the wiring duct 31 and slid to the right as it is. Furthermore, a special screw is screwed into the fixing hole 74 of the cover 7 using a special tool, and the cover 7 is fixed to the wiring duct 31. This causes the adapter insertion opening 33 of the wiring duct 31 to be closed by the cover 7. Note that since the end cap 5 is embedded in the base 4 together with the wiring duct 31, it is not necessary to attach or detach the end cap 5 when attaching or detaching the adapter 2.

[0105] By following the above procedure, the adapter 2 can be attached to the wiring duct 31. Note that the adapter 2 can be removed from the wiring duct 31 by following the above procedure in reverse.

[0106] 3. Variations (1) Adapter Modifications A modified example of the adapter 2 will be described with reference to Figures 7 to 10. In this modified example, the same components as those in the above embodiment are denoted by the same reference numerals as in the above embodiment, and detailed description thereof may be omitted.

[0107] The adapter 2 according to the modified example differs from the adapter 2 according to the above embodiment in the shape of the fixing rib 23. Specifically, the fixing rib 23 of the adapter 2 according to the modified example has a circular shape centered on the rotation axis B1 when viewed along the front-rear direction. The outer periphery of the thick-walled portion 234 and the outer periphery of the thin-walled portion 235 are concentric circles. Between the outer periphery of the thick-walled portion 234 and the outer periphery of the thin-walled portion 235, there is an outer circumferential edge portion 236 that forms an annular shape.

[0108] (2) Adapter reference example A reference example of the adapter 2 will be described with reference to Figures 11 and 12. In this reference example, components similar to those in the above embodiment are denoted by the same reference numerals as in the above embodiment, and detailed description thereof may be omitted.

[0109] The adapter 2 according to the reference example differs from the adapter 2 according to the above embodiment in the shape of the fixing rib 23. Specifically, the length L23 between both ends of the fixing rib 23 in the direction in which the two power receiving terminals 22 protrude (the vertical direction in FIG. 11) is longer than the width W32 of the opening 32. However, the length L23 between both ends of the fixing rib 23 in the direction perpendicular to the direction in which the two power receiving terminals 22 protrude (the vertical direction in FIG. 12) is equal to or less than the width W32 of the opening 32.

[0110] (3)Other In this embodiment, the wiring duct system 3 is described as a DC duct system that supplies DC (direct current) power, but the wiring duct system 3 may be an AC duct system that supplies AC (alternating current) power.

[0111] In the present embodiment, a case has been described in which the switching hub 93 and the splitter 94 are provided in the facility where the electrical device 9 is used (see FIG. 14), but the present invention is not limited to this case. For example, an AC adapter may be provided instead of the switching hub 93 and the splitter 94. The AC adapter converts AC power supplied from the power source 92 into DC power. For example, the AC adapter may be configured to convert 100V AC power into 24V DC power.

[0112] In this embodiment, the end cap 5 is attached to the right end of the wiring duct 31, but it may also be attached to the left end of the wiring duct 31.

[0113] 4. Advantages The advantages of the adapter 2, the wiring duct system 3, and the fixture 1 according to this embodiment will be described below.

[0114] The adapter 2 according to this embodiment is more restricted from being taken out of the wiring duct 31 than the adapter 2 according to the reference example.

[0115] In the adapter 2 according to the reference example, particularly in the non-powered state, the length L23 between both ends of the fixing rib 23 is shorter than the width W32 of the opening 32 of the wiring duct 31 (see FIG. 12). Therefore, in the adapter 2 according to the reference example, if the adapter 2 is rotated about the rotation axis B1 to change from a powered state to a non-powered state, basically anyone can take the adapter 2 out of the wiring duct 31.

[0116] In contrast, in the adapter 2 according to this embodiment, the length L23 between both ends of the fixing rib 23 is longer than the width W32 of the opening 32 of the wiring duct 31, particularly in the power-off state (see FIG. 6). Therefore, even if the adapter 2 is pulled out toward the front (forward) in the power-off state, the fixing rib 23 interferes with the edge of the opening 32, making it difficult to pull the adapter 2 out of the wiring duct 31. This makes it possible to prevent the adapter 2 from being taken out of the wiring duct 31. However, in the power-off state, it is only difficult for the adapter 2 to move in the front-rear direction, but it is possible to move it in the left-right direction. That is, the adapter 2 according to this embodiment can be freely moved along the longitudinal direction (left-right direction) of the wiring duct 31 without being separated from the wiring duct 31.

[0117] In the adapter 2 according to this embodiment, even in the power supply state, the length L23 between both ends of the fixing rib 23 is longer than the width W32 of the opening 32 of the wiring duct 31 (see FIG. 5). Therefore, even in the power supply state, it is possible to prevent the adapter 2 from being removed from the front side of the wiring duct 31 (the surface where the opening 32 is formed). The same applies to the adapter 2 according to the modified example.

[0118] Furthermore, in the adapter 2 according to this embodiment, the length L23 between both ends of the fixing rib 23 in any radial direction centered on the shaft portion 21 (particularly the rotation axis B1) is longer than the width W32 of the opening 32. Therefore, even if the adapter 2 is rotated at any angle around the rotation axis B1, it is difficult to pull the adapter 2 out of the wiring duct 31. Therefore, it is possible to further prevent the adapter 2 from being removed from the front of the wiring duct 31. The same applies to the adapter 2 according to the modified example.

[0119] Moreover, the wiring duct system 3 according to this embodiment includes a wiring duct 31 and a cover 7. The wiring duct 31 includes an opening 32 and an adapter insertion port 33. The adapter insertion port 33 is closed by the cover 7. The adapter insertion port 33 is an opening into which the adapter 2 is inserted, and is connected to the opening 32. Therefore, even if the wiring duct 31 is embedded in the base 4, the adapter 2 can be easily attached to and detached from the wiring duct 31.

[0120] The cover 7 includes a cover portion 71 and an insertion portion 72. The insertion portion 72 is inserted from the adapter insertion port 33 and is slidable toward the opening 32, so that the adapter insertion port 33 can be easily closed by the cover portion 71.

[0121] In addition, the cover 7 is attached to the wiring duct 31 using a special tool. Therefore, the adapter 2 can be prevented from being removed from the wiring duct 31.

[0122] Furthermore, since the fixture 1 of this embodiment is equipped with the adapter 2 of this embodiment and the wiring duct system 3 of this embodiment, the adapter 2 can be easily attached and detached to the wiring duct 31 even if the wiring duct 31 is embedded in the base 4.

[0123] In addition, in the fixture 1 according to this embodiment, the wiring duct 31 is embedded in the base 4. By removing the cover 7, the adapter insertion port 33 appears. Therefore, the adapter 2 can be easily attached to and detached from the wiring duct 31 without removing the wiring duct 31 from the base 4.

[0124] 5. Aspects As is apparent from the above-described embodiment and modified examples, the present disclosure includes the following aspects. In the following, reference symbols are given in parentheses only to clarify the correspondence with the embodiment.

[0125] The first aspect is a wiring duct system (3) that is attached with an adapter (2) to which a connector (8) is connected, and supplies power to the connector (8) via the adapter (2). The wiring duct system (3) includes a wiring duct (31) including an opening (32) extending in one direction, and an adapter insertion port (33) that is connected to the opening (32) in the one direction, has a width greater than the width of the opening (32), and allows a part of the adapter (2) to be inserted along a direction perpendicular to the one direction and the width direction of the opening (32), and a cover (7) that closes the adapter insertion port (33).

[0126] According to this embodiment, even if the wiring duct (31) is embedded in the base portion (4), the adapter (2) can be easily attached to and detached from the wiring duct (31).

[0127] The second aspect is the wiring duct system (3) based on the first aspect. In the second aspect, the cover (7) includes a cover portion (71) that closes the adapter insertion port (33), and an insertion portion (72) that protrudes from a surface of the cover portion (71) facing the wiring duct (31), is inserted into the adapter insertion port (33), and is slidable toward the opening (32).

[0128] According to this embodiment, the adapter insertion opening (33) can be easily closed.

[0129] A third aspect is the wiring duct system (3) based on the first or second aspect. In the third aspect, the cover (7) is attached to the wiring duct (31) using a dedicated tool.

[0130] According to this embodiment, it is possible to prevent the adapter (2) from being taken out of the wiring duct (31).

[0131] A fourth aspect is a fixture (1), comprising a wiring duct system (3) based on any one of the first to third aspects, and the adapter (2).

[0132] According to this embodiment, even if the wiring duct (31) is embedded in the base portion (4), the adapter (2) can be easily attached to and detached from the wiring duct (31).

[0133] The fifth aspect is the fixture (1) based on the fourth aspect. In the fifth aspect, the fixture (1) further includes a base (4) in which the wiring duct (31) is embedded. A surface of the wiring duct (31) including the opening (32) and the adapter insertion port (33) is exposed without protruding from the base (4).

[0134] According to this embodiment, the adapter (2) can be easily attached to and detached from the wiring duct (31) without removing the wiring duct (31) from the base portion (4). [Explanation of symbols]

[0135] 1. Fixtures 2 Adapter 3. Wiring duct system 31 Wiring Duct 32 Opening 33 Adapter insertion port 4 base 7 Cover 71 Cover part 72 Insertion section 8 Connectors

Claims

1. A wiring duct system to which an adapter to which a connector is connected is attached, and which supplies power to the connector via the adapter, a wiring duct including an opening extending in one direction, and an adapter insertion port connected to the opening in the one direction, having a width greater than a width of the opening, and into which a part of the adapter can be inserted along a direction perpendicular to the one direction and the width direction of the opening; A cover that closes the adapter insertion port. Wiring duct system.

2. the cover includes a cover portion that closes the adapter insertion opening, and an insertion portion that protrudes from a surface of the cover portion that faces the wiring duct, is inserted into the adapter insertion opening, and is slidable toward the opening side. The wiring duct system according to claim 1 .

3. The cover is attached to the wiring duct using a dedicated tool. The wiring duct system according to claim 1 .

4. The wiring duct system according to any one of claims 1 to 3 and the adapter. furniture.

5. The wiring duct further includes a base in which the wiring duct is embedded, a surface of the wiring duct including the opening and the adapter insertion port is exposed without protruding from the base; The fixture according to claim 4.

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