Wiring duct system and furniture system

Abstract

To reduce the possibility that a human body, clothes or the like comes into contact with a first projection part provided on a duct body.SOLUTION: Inside a duct body 2 provided in a wiring duct system 1, a conductive bar 27 connectable to a power receiving plug of a load device inserted through a groove 23 is arranged. The mounting surface 22 of the duct body 2 is provided with a first projection part 29 for preventing insertion of the power receiving plug into the groove 23 by abutting on a part of the load apparatus when a part of the power receiving plug is inserted into the groove 23 in a direction different from a normal mounting direction. The cap member 3 is provided with a second projection part 31 adjacent to the first projection part 29 in a state of attaching the cap member 3 to the end part 21 of the duct body 2. The rigidity of the second projection 31 is lower than that of the first projection 29. In the normal direction DR2 of the mounting surface 22, a first distance D1 from the mounting surface 22 to the tip of the first projection 29 is equal to or less than a second distance D2 from the mounting surface 22 to the tip of the second projection 31.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present disclosure relates to a wiring duct system and a fixture system, and more particularly to a wiring duct system and a fixture system for supplying power to load devices. [Background technology]

[0002] Patent Document 1 discloses a wiring duct to which a wiring device can be connected. The duct body of the wiring duct has an opening along its longitudinal direction into which the wiring duct coupling part of the wiring device is inserted. The duct body also has support flanges on both sides of the opening, and one of the flanges has a polarity indicating ridge formed integrally on its outer surface. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-27420 Summary of the Invention [Problem to be solved by the invention]

[0004] In the wiring duct of the above configuration, it is possible to attach a wiring device from the longitudinal direction of the duct body, but because a protrusion is provided on the outer surface of one of the support flanges of the duct body, the protrusion protrudes from the outer surfaces of the duct body and the wiring device. If the wiring duct is installed in a location where it is likely to come into contact with a person's body or clothing, there is a possibility that the end of the protrusion (first protrusion) will come into contact with the person's body or clothing, etc.

[0005] An object of the present disclosure is to provide a wiring duct system and a fixture system that can reduce the possibility of a person's body, clothing, etc. coming into contact with a first protrusion provided on a duct body. [Means for solving the problem]

[0006] A wiring duct system according to one aspect of the present disclosure includes a duct body and a cap member. The duct body is cylindrical and extends in one direction, with both ends open in the one direction. A loading device can be attached to and detached from a mounting surface along the one direction. The cap member is attached to the end of the duct body. A groove extending in the one direction is formed in the mounting surface of the duct body. A conductive bar is disposed inside the duct body and can be connected to a power receiving plug of the loading device inserted through the groove from the outside of the duct body. The mounting surface of the duct body is provided with a first protrusion that abuts against a part of the loading device when a part of the power receiving plug is inserted into the groove in an orientation different from the normal mounting direction, thereby preventing the power receiving plug from being inserted into the groove. The cap member is provided with a second protrusion that is adjacent to the first protrusion when the cap member is attached to the end of the duct body. In a normal direction of the mounting surface, a first distance from the mounting surface to the tip of the first protrusion is equal to or less than a second distance from the mounting surface to the tip of the second protrusion.

[0007] A fixture system according to one aspect of the present disclosure includes the wiring duct system and fixtures to which the wiring duct system is attached. [Effects of the Invention]

[0008] According to the present disclosure, it is possible to reduce the possibility that a person's body, clothing, or the like will come into contact with the first protrusion provided on the duct body. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is an external perspective view of a wiring duct system according to an embodiment of the present disclosure. [Figure 2] FIG. 2 is a schematic system configuration diagram of the wiring duct system. [Figure 3] FIG. 3 is a perspective view of a main part showing a state in which an end cap is attached to a duct body included in the wiring duct system. [Figure 4]FIG. 4 is an exploded perspective view showing a state in which the end cap is removed from the duct body. [Figure 5] FIG. 5 is a cross-sectional view taken along the line A1-A1 in FIG. [Figure 6] FIG. 6 is a perspective view of the essential parts showing a state in which a feed-in cap is attached to the duct body of the same. [Figure 7] FIG. 7 is an exploded perspective view showing a state in which the feed-in cap is removed from the duct body. [Figure 8] FIG. 8 is a cross-sectional view taken along line A2-A2 in FIG. [Figure 9] FIG. 9 is a perspective view of the essential parts of the duct body in a state where an electric device is attached to the duct body. [Figure 10] FIG. 10 is a cross-sectional view of the duct body of the same in a state where an electric device is attached thereto. [Figure 11] FIG. 11 is a rear view of the electric device. [Figure 12] FIG. 12 is a rear view of the electric device. [Figure 13] FIG. 13 is a perspective view of the appearance of the furniture system according to this embodiment. [Figure 14] FIG. 14 is a side view of the main part of the fixture system. [Figure 15] FIG. 15 is a side view of a main part of the fixture system according to the first modification. [Figure 16] FIG. 16 is a side view of a main part of a fixture system according to the second modification. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, a wiring duct system and a fixture system including the same according to an embodiment will be described in detail with reference to the drawings. However, each diagram described in the following embodiments is a schematic diagram, and the dimensional ratios of the sizes of the components do not necessarily reflect the actual dimensional ratios. Furthermore, 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 are possible depending on the design, etc., as long as the effects of the present disclosure can be achieved.

[0011] (Embodiment) (1) Overview The wiring duct system 1 according to this embodiment includes a duct body 2 and a cap member 3, as shown in FIGS.

[0012] The duct body 2 is cylindrical and extends in one direction DR1. The duct body 2 has open ends 21 on both sides in the direction DR1. A loading device 5 (see FIG. 9) can be attached to and detached from the duct body 2 via an attachment surface 22 along the direction DR1.

[0013] The cap member 3 is attached to the end portion 21 of the duct body 2 .

[0014] The mounting surface 22 of the duct body 2 is provided with a groove 23 extending along one direction DR1.

[0015] Inside the duct body 2, a conductive bar 27 is arranged which can be connected to a power receiving plug 51 of the load device 5 inserted through the groove 23 from the outside of the duct body 2.

[0016] The mounting surface 22 of the duct body 2 is provided with a first protrusion 29 that prevents the power receiving plug 51 from being inserted into the groove 23 when the power receiving plug 51 is inserted into the groove 23 in a direction different from the normal mounting direction by coming into contact with a part of the load device 5.

[0017] The cap member 3 is provided with a second protrusion 31 that is adjacent to the first protrusion 29 when the cap member 3 is attached to the end portion 21 of the duct body 2.

[0018] In the normal direction DR2 of the mounting surface 22 (see FIG. 5), a first distance D1 from the mounting surface 22 to the tip of the first protrusion 29 is equal to or less than second distances D2, D3 from the mounting surface 22 to the tip of the second protrusion 31.

[0019] In this embodiment, the load device 5 is, for example, a DC outlet 5A (see FIG. 9). The DC outlet 5A has socket connectors (first outlet 511 and second outlet 512) to which a plug connector (e.g., a USB connector) 71 (see FIG. 2) provided on the electric device 7 can be connected. The DC outlet 5A supplies DC power to the electric device 7 having the plug connector 71 connected to the socket connector. The type of the electric device 7 is not particularly limited. Examples of the electric device 7 include computer devices (personal computers, smartphones, tablet computers, etc.), accessories of computer devices (monitors, speakers, microphones, etc.), lighting equipment (desk lamps, etc.), network cameras, sensors (temperature sensors, humidity sensors, illuminance sensors, etc.), game consoles, and air conditioning equipment (desk fans, etc.).

[0020] Furthermore, the load device 5 connected to the duct body 2 is not limited to the DC outlet 5A. The load device 5 may be a lighting device (such as a desk lamp), a network camera, or a sensor (such as a temperature sensor, a humidity sensor, or an illuminance sensor).

[0021] In this embodiment, the loading device 5 is attached to the duct body 2 by inserting the power receiving plug 51 of the loading device 5 into the groove 23 of the duct body 2 and then rotating the loading device 5 by 90 degrees. As shown in FIG. 11 , the power receiving plug 51 has two contacts 53 that protrude in opposite directions. The power receiving plug 51 of the loading device 5 is inserted into the groove 23 of the duct body 2 with the two contacts 53 aligned parallel to the longitudinal direction of the groove 23. There are two orientations of the loading device 5 such that the aligned direction of the two contacts 53 is parallel to the longitudinal direction of the groove 23. As shown in FIG. 11 , one orientation is such that the first protrusion 29 is inserted into the restricting recess 54 provided on the rear surface of the loading device 5, and the other orientation is upside down relative to the orientation shown in FIG. 11 . As shown in FIG. 11 , when the first protrusion 29 is inserted into the restricting recess 54 provided on the rear surface of the loading device 5, the entire power receiving plug 51 can be inserted into the groove 23. With the entire power receiving plug 51 inserted into the groove 23, the loading device 5 can be rotated 90 degrees with respect to the duct body 2, so the orientation (installation direction) of the loading device 5 shown in FIG. 11 is the correct installation direction. On the other hand, if the power receiving plug 51 is inserted into the groove 23 upside down from the orientation shown in FIG. 11, the rear surface 56 of the loading device 5 will hit the first protrusion 29, and the entire power receiving plug 51 cannot be inserted into the groove 23. As a result, the loading device 5 cannot be installed in the duct body 2, and such an orientation (installation direction) of the loading device 5 is referred to as an orientation that is different from the correct installation direction.

[0022] In this embodiment, in the normal direction DR2 of the mounting surface 22, the first distance D1 from the mounting surface 22 to the tip of the first protrusion 29 is equal to or less than the second distances D2, D3 from the mounting surface 22 to the tip of the second protrusion 31. In other words, the second distances D2, D3 from the mounting surface 22 to the tip of the second protrusion 31 are equal to or greater than the first distance D1 from the mounting surface 22 to the tip of the first protrusion 29. Therefore, a human body, clothing, or the like will come into contact with the second protrusion 31 before coming into contact with the end of the first protrusion 29, thereby reducing the possibility that the human body, clothing, or the like will come into contact with the end of the first protrusion 29 and improving safety.

[0023] Here, because the duct body 2 holds the load device 5 attached to the mounting surface 22, the rigidity of the duct body 2 needs to be higher than that of the cap member 3 attached to the end 21 of the duct body 2. For this reason, the rigidity of the second protrusion 31 is lower than that of the first protrusion 29. Therefore, before a human body, clothing, or the like comes into contact with the end of the first protrusion 29, the human body, clothing, or the like will come into contact with the second protrusion 31, which has a lower rigidity than the first protrusion 29. This reduces the possibility that the human body, clothing, or the like will come into contact with the end of the first protrusion 29, which has a higher rigidity than the second protrusion 31, thereby improving safety.

[0024] As shown in FIG. 13, the fixture system 100 according to this embodiment includes the wiring duct system 1 and a fixture 110 to which the wiring duct system 1 is attached.

[0025] Since the fixture system 100 is equipped with the above-mentioned wiring duct system 1, the possibility of a human body or clothing, etc. coming into contact with the end of the first protrusion 29, which has higher rigidity than the second protrusion 31, is reduced, thereby improving safety.

[0026] Fixtures 110 is a general term for furniture, fixtures, and other equipment used in residential or non-residential buildings. In the fixture system 100 shown in Fig. 13, the fixtures 110 are desks for office use, study use, or restaurants, but the fixtures 110 are not limited to desks. The fixtures 110 may be tables or workbenches used to place items, or may be chairs, benches, shelves, boxes, dressers, beds, whiteboards, screens, room dividers, and the like.

[0027] (2)Details The wiring duct system 1 and the fixture system 100 according to this embodiment will be described in detail below with reference to FIGS. 1 to 16. In the following description, the X-axis direction in FIGS. 1, 3 to 12, etc. is defined as the front-to-back direction (depth direction), the Y-axis direction as the left-to-right direction, and the Z-axis direction as the up-to-down direction. The positive direction in the X-axis direction is defined as the front side, the positive direction in the Y-axis direction as the right side, and the positive direction in the Z-axis direction as the top side. However, these directions are merely examples and are not intended to limit the directions in which the wiring duct system 1 and the fixture system 100 are used. The arrows indicating the various directions in the drawings are merely shown for explanatory purposes and do not have any substance.

[0028] The wiring duct system 1 and a fixture system 100 including the wiring duct system 1 will be described below with reference to the drawings.

[0029] (2.1) Wiring duct system As described above, the wiring duct system 1 includes the duct body 2 and the cap member 3. The wiring duct system 1 also includes the loading device 5 that is detachable from the duct body 2. Below, the duct body 2, the cap member 3, and the loading device 5 included in the wiring duct system 1 will be described with reference to the drawings.

[0030] (2.1.1) Duct body As shown in Fig. 5, the duct main body 2 has a duct rail 20 and two conductive bars 27. In this embodiment, a DC voltage supplied from an external AC adapter 60 (see Fig. 2) is applied to the two conductive bars 27. Hereinafter, of the two conductive bars 27, the positive conductive bar 27 may be referred to as a first conductive bar 27A, and the negative conductive bar 27 may be referred to as a second conductive bar 27B.

[0031] The duct rail 20 has a rectangular tubular shape in which the left-right dimension is longer than the dimensions in the front-rear and up-down directions. The duct rail 20 is made of, for example, metal. The duct rail 20 is a rectangular tubular shape extending in one direction (left-right direction) and has a front wall 201 and a rear wall 202 that face each other in the front-rear direction, and an upper wall 203 and a lower wall 204 that face each other in the up-down direction. Both end portions 21 of the duct rail 20 in one direction are open. In the following description, of the end portions 21 on both sides of the duct rail 20, the left end portion 21 may be referred to as a first end portion 21A, and the right end portion 21 may be referred to as a second end portion 21B.

[0032] In the duct rail 20, one surface (in this embodiment, the surface of the front wall 201) along one direction (in this embodiment, the left-right direction that is the longitudinal direction of the duct rail 20) serves as a mounting surface 22 on which the load device 5 is mounted. A groove 23 is formed in the mounting surface 22 of the duct rail 20, extending in one direction from the first end 21A to the second end 21B of the duct rail 20.

[0033] The inner surface (lower surface) of the upper wall 203 and the inner surface (upper surface) of the lower wall 204 of the duct rail 20 are each provided with a rib 205 that protrudes in a direction perpendicular to the inner surface. The rib 205 extends in one direction from the first end 21A to the second end 21B of the duct rail 20. On the inner surface (lower surface) of the upper wall 203 and the inner surface (upper surface) of the lower wall 204, grooves between the front wall 201 and the rib 205 form fitting grooves 24 into which fitting protrusions 52 provided on the power receiving plug 51 of the loading device 5 fit. Furthermore, on the inner surface (lower surface) of the upper wall 203 and the inner surface (upper surface) of the lower wall 204, grooves between the rib 205 and the rear wall 202 form mounting grooves 25 into which the conductive bar 27 is attached.

[0034] A first conductive bar 27A on the positive electrode side is attached to the attachment groove 25 provided in the upper wall 203 via an insulating member 26 having electrical insulation properties. Furthermore, a second conductive bar 27B on the negative electrode side is attached to the attachment groove 25 provided in the lower wall 204 via an insulating member 26 having electrical insulation properties. The insulating member 26 is formed of a synthetic resin material such as PVC (polyvinyl chloride). The two conductive bars 27 (the first conductive bar 27A and the second conductive bar 27B) are provided on the inner surfaces of the upper wall 203 and the lower wall 204, from the first end 21A to the second end 21B in the longitudinal direction of the duct rail 20.

[0035] The mounting surface 22 (surface of the front wall 201) of the duct rail 20 is provided with a first protrusion 29 that protrudes forward from the upper end portion of the mounting surface 22. The first protrusion 29 extends in one direction from the first end 21A to the second end 21B of the duct rail 20. When part of the power receiving plug 51 is inserted into the groove 23 in an orientation different from the correct mounting direction, the first protrusion 29 comes into contact with part of the load device 5, thereby preventing the entire power receiving plug 51 from being inserted into the groove 23.

[0036] (2.1.2) Cap member The cap member 3 can be attached to two ends 21 of the duct body 2 in one direction.

[0037] The cap member 3 includes an end cap 3A for closing the end 21 of the duct body 2 (see FIGS. 3 to 5). The cap member 3 also includes a feed-in cap 3B for supplying power to the conductive bar 27 (see FIGS. 6 to 8). When the feed-in cap 3B is attached to the end 21 of the duct body 2, the feed-in cap 3B can supply power to the conductive bar 27.

[0038] In this embodiment, for example, the end cap 3A is attached to the first end portion 21A on the left side of the duct main body 2 (duct rail 20), and the feed-in cap 3B is attached to the second end portion 21B on the right side of the duct main body 2 (duct rail 20). Note that the feed-in cap 3B may be attached to the first end portion 21A on the left side of the duct main body 2 (duct rail 20), and the end cap 3A may be attached to the second end portion 21B on the right side of the duct main body 2 (duct rail 20).

[0039] (2.1.3) End Cap The end cap 3A is a molded product made of electrically insulating synthetic resin, and can be attached to the end 21 of the duct rail 20 (for example, the first end 21A).

[0040] As shown in Figures 3 to 5, the end cap 3A comprises a rectangular cover plate 32 that covers the end 21 of the duct body 2, and an insertion portion 33 that protrudes from one surface of the cover plate 32 and is inserted into the end 21 of the duct body 2.

[0041] The insertion portion 33 is provided with two fitting protrusions 34 that are inserted into the two fitting grooves 24 of the duct rail 20, respectively.

[0042] The insertion portion 33 is provided with a boss 35 that protrudes rearward from the rear surface of the insertion portion 33. The insertion portion 33 is provided with a through hole 36 that passes through the insertion portion 33 and the boss 35. A thread groove is formed on the inner surface of the through hole 36, and a fixing screw 37 is screwed into the thread groove on the inner surface of the through hole 36.

[0043] When attaching the end cap 3A to the end 21 (first end 21A) of the duct rail 20, the user inserts the insertion portion 33 into the groove 23 with the two fitting protrusions 34 inserted into the two fitting grooves 24 of the duct rail 20, respectively. The user inserts the insertion portion 33 of the end cap 3A into the groove 23 until the cover plate 32 contacts the end 21 of the duct rail 20, and then further screws in the fixing screw 37 that is threaded into the threaded groove of the through hole 36. At this time, the tip of the threaded portion of the fixing screw 37 comes into contact with the rear wall 202, pressing the fitting protrusion 34 against the back surface (rear surface) of the front wall 201, so that the end cap 3A is held attached to the end 21 of the duct rail 20.

[0044] Here, the front end portion of the cover plate 32 of the end cap 3A becomes the second protrusion 31A. The second protrusion 31A is provided from the upper end to the lower end of the front end portion of the cover plate 32. In the normal direction (X-axis direction) of the mounting surface 22, a first distance D1 from the mounting surface 22 to the tip of the first protrusion 29 is less than a second distance D2 from the mounting surface 22 to the tip of the second protrusion 31A. In other words, the protrusion amount (second distance D2) of the second protrusion 31A adjacent to the first protrusion 29 from the mounting surface 22 is greater than the protrusion amount (first distance D1) of the first protrusion 29 from the mounting surface 22. In this embodiment, the material of the first protrusion 29 includes a metal material, and the material of the second protrusion 31A includes a synthetic resin material. This makes the second protrusion 31A less rigid than the first protrusion 29. When a person, clothing, or the like approaches the first end 21A of the duct rail 20, the person, clothing, or the like will come into contact with the second protrusion 31A of the synthetic resin end cap 3A before coming into contact with the first protrusion 29 of the metal duct rail 20. This reduces the possibility that the end of the first protrusion 29 of the duct rail 20 will come into contact with a person, clothing, or the like, and improves the safety of the wiring duct system 1.

[0045] When the cap member 3 is attached to the duct body 2, the second protrusion 31 may have a rounded or tapered corner at the tip end of the second protrusion 31 at a location opposite the first protrusion 29. That is, the second protrusion 31A of the end cap 3A may have a rounded or tapered corner at the tip end of the second protrusion 31A at a location opposite the first protrusion 29. This reduces the possibility that the tip end corner of the second protrusion 31A will get caught on the person, clothing, or the like when the person, clothing, or the like comes into contact with the tip end corner of the second protrusion 31.

[0046] (2.1.4) Feed-in cap The feed-in cap 3B can be attached to the end 21 of the duct rail 20 (for example, the second end 21B).

[0047] The feed-in cap 3B is a connecting member for electrically connecting the two conductive bars 27 of the duct body 2 to the corresponding electric wires W1 (see FIG. 2). That is, the two conductive bars 27 are electrically connected to the corresponding electric wires W1 via the feed-in cap 3B. The configuration of the feed-in cap 3B will be described below with reference to FIGS. 6 to 8.

[0048] The feed-in cap 3B has a rectangular parallelepiped main body 40 and an insertion portion 41 that is inserted into and connected to the end portion 21 of the duct rail 20.

[0049] The main body 40 holds wire connection terminals to which a cable CB1 including two wires W2 connected to two wires W1 is connected. First ends of the two wires W2 are respectively connected to the wire connection terminals held in the main body 40, and second ends of the two wires W2 are connected to a connector CN1. A connector CN2 connected to the two wires W1 is detachably attached to the connector CN1 (see FIG. 2). The first ends of the two wires W1 are connected to the connector CN2, and the second ends of the two wires W1 are connected to an AC adapter 60. The AC adapter 60 converts an AC voltage input from an AC power source 61 into a DC voltage and outputs the DC voltage.

[0050] The insertion portion 41 is inserted into the inside of the duct rail 20 from the second end portion 21B of the duct rail 20. The insertion portion 41 is provided with two fitting protrusions 42 that are inserted into the two fitting grooves 24 of the duct rail 20, respectively. The insertion portion 41 is provided with a through hole that penetrates the insertion portion 41 in the front-to-rear direction. A thread groove is provided on the inner surface of the through hole, and a fixing screw 44 is screwed into the thread groove of the through hole.

[0051] The insertion portion 41 is also provided with two contacts 43 that are connected to the two conductive bars 27 held by the duct rail 20. The two contacts 43 include a first contact 43A that contacts the first conductive bar 27A on the positive electrode side and a second contact 43B that contacts the second conductive bar 27B on the negative electrode side. The first contact 43A protrudes upward from a portion of the upper surface of the insertion portion 41 that faces the first conductive bar 27A. The second contact 43B protrudes downward from a portion of the lower surface of the insertion portion 41 that faces the second conductive bar 27B.

[0052] Furthermore, when the insertion portion 41 is connected to the second end 21B of the duct rail 20, the main body 40 is provided with a second protrusion 31B that protrudes forward beyond the right end of the main body 40 at a portion (left end) adjacent to the second end 21B of the duct rail 20. The second protrusion 31B is provided from the upper end to the lower end of the left end portion of the main body 40. Furthermore, a tapered shape 45 is provided on the front surface of the main body 40, connecting the second protrusion 31B to a portion where the second protrusion 31B is not provided. The tapered shape 45 is an inclined surface that is obliquely inclined with respect to the front surface of the main body 40. In this manner, the tapered shape 45 may be provided at a corner on the tip side of the second protrusion 31B at a portion of the second protrusion 31B of the feed-in cap 3B opposite the first protrusion 29. This reduces the possibility that when a person, clothing, etc. comes into contact with the corner on the tip side of second protrusion 31B, the corner on the tip side of second protrusion 31B will get caught on the person, clothing, etc. Note that the corner on the tip side of second protrusion 31B of feed-in cap 3B may be provided with a rounded shape instead of tapered shape 45, thereby reducing the possibility that the corner on the tip side of second protrusion 31B will get caught on the person, clothing, etc.

[0053] Here, in the normal direction (X-axis direction) of the mounting surface 22, a first distance D1 from the mounting surface 22 to the tip of the first protrusion 29 is equal to or less than a second distance D3 from the mounting surface 22 to the tip of the second protrusion 31B. In other words, the amount by which the second protrusion 31B adjacent to the first protrusion 29 protrudes from the mounting surface 22 (second distance D3) is equal to or greater than the amount by which the first protrusion 29 protrudes from the mounting surface 22 (first distance D1). In this embodiment, the material of the first protrusion 29 includes a metal material, and the material of the second protrusion 31B includes a synthetic resin material. This makes the second protrusion 31B less rigid than the first protrusion 29. Therefore, when a person, clothing, or the like approaches the second end 21B of the duct rail 20, the person, clothing, or the like comes into contact with the second protrusion 31B of the synthetic resin feed-in cap 3B before coming into contact with the first protrusion 29 of the metal duct rail 20. This reduces the possibility that the end of the first protrusion 29 of the duct rail 20 will come into contact with a person, clothing, or the like, and improves the safety of the wiring duct system 1.

[0054] When the user inserts the insertion portion 41 of the feed-in cap 3B into the second end portion 21B of the duct main body 2, the two fitting protrusions 42 are inserted into the corresponding fitting grooves 24. Then, when the user further screws in the fixing screw 44 that is threaded into the through-hole of the insertion portion 41, the tip of the threaded portion of the fixing screw 44 comes into contact with the rear wall 202, and the fitting protrusions 42 are pressed against the back surface (rear surface) of the front wall 201. This keeps the feed-in cap 3B attached to the second end portion 21B of the duct rail 20.

[0055] At this time, the first contact 43A of the feed-in cap 3B is connected to the first conductive bar 27A, and the second contact 43B is connected to the second conductive bar 27B. When the user connects the connector CN2 and the connector CN1 with the feed-in cap 3B connected to the duct body 2, the DC voltage output from the AC adapter 60 is applied to the two conductive bars 27 via the feed-in cap 3B.

[0056] In this embodiment, the first distance D1 from the mounting surface 22 to the tip of the first protrusion 29 is preferably at least half the second distances D2, D3 from the mounting surface 22 to the tip of the second protrusion 31 (31A, 31B). In other words, the first distance D1 and the second distances D2, D3 preferably satisfy the relational expressions D2 / 2≦D1≦D2 and D3 / 2≦D1≦D3. This allows the step differences (D2-D1) and (D3-D1) between the second protrusion 31B and the first protrusion 29 to be equal to or less than the first distance D1 from the mounting surface 22 to the tip of the first protrusion 29.

[0057] (2.1.5) Load equipment A loading device 5 (see Figures 1 and 9 to 12) can be attached and detached to the duct main body 2. In Figure 1, only one loading device 5 is connected to the duct main body 2, but multiple loading devices 5 can be connected to the duct main body 2. The loading device 5 is used in a state where it is connected to a desired position on the duct main body 2. Furthermore, the type of loading device 5 connected to the duct main body 2 is not limited to one type, and multiple types of loading devices 5 may be used in a state where they are connected to desired positions on the duct main body 2.

[0058] In this embodiment, the load device 5 is, for example, a DC outlet 5A (see FIG. 9).

[0059] The DC outlet 5A includes a housing 50 and a power receiving plug 51, as shown in FIGS.

[0060] The housing 50 has a rectangular parallelepiped shape. The housing 50 has a first socket 511 and a second socket 512. The first socket 511 is a socket for a USB Type-A plug serving as the plug connector 71 (see FIG. 2). The second socket 512 is a socket for a USB Type-C plug serving as the plug connector 71. In other words, the first socket 511 is of a different standard than the second socket 512. The first socket 511 is also of a different size than the second socket 512.

[0061] The first outlet 511 and the second outlet 512 are provided on a surface (connector mounting surface 501) facing away from the duct body 2 when the DC outlet 5A is attached to the duct body 2. When the DC outlet 5A is attached to the duct body 2, the first outlet 511 and the second outlet 512 are lined up one above the other.

[0062] The power receiving plug 51 protrudes from the surface of the housing 50 facing the duct body 2 toward the duct body 2 .

[0063] The power receiving plug 51 is columnar in size so that it can be inserted into the groove 23 of the duct body 2.

[0064] Two fitting protrusions 52 protruding in opposite directions from the side surface of the power receiving plug 51 are provided on the side surface of the power receiving plug 51. The two fitting protrusions 52 are provided at positions where they can be inserted into the two fitting grooves 24 of the duct body 2 when the power receiving plug 51 is inserted into the groove 23 of the duct body 2.

[0065] Two contacts 53 are provided on the side of the power receiving plug 51, protruding in opposite directions from the side of the power receiving plug 51. The two contacts 53 correspond one-to-one to the two mating protrusions 52, and the two contacts 53 are located behind the corresponding mating protrusions 52. The two contacts 53 are positioned so that they can come into contact with the two conductive bars 27 of the duct body 2 when the power receiving plug 51 is inserted into the groove 23 of the duct body 2.

[0066] Furthermore, a restricting recess 54 is provided on the rear surface 56 of the housing 50. The restricting recess 54 is a recess formed on the surface of the DC outlet 5A. When the DC outlet 5A is attached to the duct rail 20, the first protrusion 29 of the duct rail 20 is inserted into the restricting recess 54. If the DC outlet 5A is oriented incorrectly (i.e., upside down from that in FIG. 11 ), the first protrusion 29 of the duct rail 20 will interfere with the DC outlet 5A, making it impossible to attach the DC outlet 5A to the duct rail 20. In other words, the restricting recess 54 and the first protrusion 29 function as a restricting structure that restricts the orientation of the DC outlet 5A when the DC outlet 5A is attached to the duct rail 20.

[0067] The release operation unit 55 is held by the housing 50. The release operation unit 55 is arranged on a side of the housing 50. The rear end of the release operation unit 55 protrudes rearward from the rear surface 56 of the housing 50. When a force that moves the release operation unit 55 forward is applied to the release operation unit 55, the release operation unit 55 can move forward. A restoring force of a spring housed in the housing 50 acts on the release operation unit 55. Therefore, when no force is applied to the release operation unit 55, the tip of the release operation unit 55 protrudes rearward from the rear surface 56 of the housing 50.

[0068] The DC outlet 5A may further include a voltage converter. The voltage converter converts the DC voltage input from the two contacts 53 into a DC voltage of a desired voltage value. The DC voltage whose voltage value has been converted by the voltage converter is output from the first outlet 511 and the second outlet 512. The electric device 7 (see FIG. 2) can receive power via a plug connector 71 (see FIG. 2) connected to the first outlet 511 or the second outlet 512 and an electric wire W3.

[0069] (2.2) Furniture system The fixture system 100 according to this embodiment will be described with reference to Figs.

[0070] The furniture system 100 includes furniture 110, such as a desk for office or study.

[0071] The fixture 110 includes a top plate 111 that is, for example, rectangular in shape in a plan view, and two legs 112 that support the top plate 111.

[0072] The wiring duct system 1 is attached to the underside of the front end of the top panel 111 via an attachment member 115 (see FIG. 14).

[0073] Furthermore, a mounting member 114 is disposed in the center of the top plate 111 in the front-to-rear direction via two support members 113 fixed to the left and right ends of the top plate 111. One wiring duct system 1 is attached to each of the front and rear surfaces of the mounting member 114.

[0074] Each of the three wiring duct systems 1 attached to the fixture 110 comprises a duct body 2 and two cap members 3 (end cap 3A and feed-in cap 3B) attached to the two ends 21 of the duct body 2.

[0075] Here, the protrusion amount of the first protrusion 29 provided on the duct body 2 from the mounting surface 22 is less than the protrusion amount of the second protrusion 31 provided on the cap member 3 from the mounting surface 22. Therefore, even if a person, clothing, etc. approaches the duct body 2, the person, clothing, etc. will come into contact with the second protrusion 31, which protrudes from the mounting surface 22 by more than the first protrusion 29, thereby reducing the possibility of contacting the end of the first protrusion 29 in one direction. In particular, the wiring duct system 1, which is located below the end of the top plate 111, is located close to a person using the fixture 110. Even in this case, this embodiment reduces the possibility of the body or clothing of a person using the fixture 110 coming into contact with the end of the first protrusion 29 in one direction. This has the advantage of improving the safety of the fixture system 100.

[0076] In the installation example of Figure 14, when viewed from the top and bottom, the second protrusion 31 protrudes slightly outside the top plate 111 of the fixture 110, but the wiring duct system 1 may be positioned in a position where the entire second protrusion 31 is hidden by the top plate 111.

[0077] For example, as shown in Fig. 15, the wiring duct system 1 may be attached to the top plate 111 of the fixture 110 via an attachment member 115A in a position where the second protrusion 31 is hidden by the top plate 111 when viewed from the top. In the fixture system 100 shown in Fig. 15, when the fixture 110 is installed, the fixture 110 has an eaves portion 116 located above the duct body 2. In the normal direction DR2 of the mounting surface 22, a length dimension D4 from the mounting surface 22 to the tip of the eaves portion 116 is greater than second distances D2, D3 from the mounting surface 22 to the tips of the second protrusions 31 (31A, 31B).

[0078] In this way, the wiring duct system 1 may be positioned so that the second protrusion 31 is hidden by the eaves 116 of the fixture 110 when viewed from above and below, thereby reducing the possibility of people or clothing coming into contact with the end of the first protrusion 29.

[0079] 16, the wiring duct system 1 may be attached to the top plate 111 of the fixture 110 via the mounting member 115B in a position where the loading device 5 attached to the wiring duct system 1 is hidden by the top plate 111 when viewed from the top and bottom and cannot be seen. In the fixture system 100 shown in FIG. 16, the length dimension D4 from the mounting surface 22 to the tip of the eaves portion 116 in the normal direction DR2 of the mounting surface 22 is greater than the protrusion D5 of the loading device 5 attached to the duct body 2 from the mounting surface 22.

[0080] In this way, the wiring duct system 1 may be arranged in a position where it is hidden by the eaves portion 116 of the fixture 110 when viewed from above and below, and the load devices 5 attached to the duct body 2 are not visible. By arranging the wiring duct system 1 in a position where it is hidden by the eaves portion 116 when viewed from above and below, and the load devices 5 are not visible, the possibility of people, clothing, etc. coming into contact with the end of the first protrusion 29 and the load devices 5 attached to the wiring duct system 1 is reduced.

[0081] (2.3) Instructions for use The procedure for attaching the DC outlet 5A to the duct body 2 will be described below.

[0082] 11, the user first holds the DC outlet 5A so that the two fitting protrusions 52 and the two contacts 53 are aligned along the length direction (left-right direction) of the duct rail 20. In this state, the two fitting protrusions 52 and the two contacts 53 do not interfere with the duct rail 20, and the power receiving plug 51 can be inserted into the groove 23 of the duct rail 20.

[0083] After inserting the power receiving plug 51 into the groove 23, the user rotates the DC outlet 5A by 90 degrees as shown in FIG. 12. Then, as shown in FIG. 10, the two fitting protrusions 52 are inserted into the two fitting grooves 24. This restricts movement of the DC outlet 5A in the front-to-rear direction. Furthermore, the claws 57 of the release operation part 55 are inserted into the grooves 23 of the duct rail 20, restricting rotation of the housing 50. Furthermore, the two contacts 53 come into contact with the corresponding conductive bars 27, and are thereby electrically connected to the corresponding conductive bars 27.

[0084] By the above procedure, the DC outlet 5A is attached to the duct body 2. The DC outlet 5A can be attached to the duct body 2 at any position within the region (attachment region) where the groove 23 is provided, and can be electrically connected to the conductive bar 27.

[0085] In this embodiment, there is no configuration for restricting left-right movement of the DC outlet 5A attached to the duct body 2. Therefore, the DC outlet 5A can move left-right while attached to the duct body 2. However, in order to suppress wear on the two contacts 53 due to left-right movement of the DC outlet 5A, the wiring duct system 1 may also be provided with a configuration for restricting left-right movement of the DC outlet 5A attached to the duct body 2.

[0086] Next, the procedure for removing DC outlet 5A from duct main body 2 will be described. When the user applies force to release operation part 55 toward connector mounting surface 501, release operation part 55 moves, and claw part 57 comes out of groove 23. This releases the restriction on rotation of housing 50. When the user rotates housing 50, two fitting protrusions 52 come out of two fitting grooves 24. By following the above procedure, the user can remove DC outlet 5A from duct main body 2.

[0087] (3) Variations The above embodiment is merely one of various embodiments of the present disclosure, and various modifications can be made to the above embodiment depending on the design and the like as long as the object of the present disclosure can be achieved.

[0088] In the above embodiment, the first distance D1 from the mounting surface 22 to the tip of the first protrusion 29 in the normal direction of the mounting surface 22 is smaller than the second distances D2, D3 from the mounting surface 22 to the tips of the second protrusions 31A, 31B, but the first distance D1 may be the same as the second distances D2, D3. Note that the first distance D1 being the same as the second distances D2, D3 does not necessarily mean that the first distance D1 and the second distances D2, D3 are completely the same, and there may be a difference that can be considered a manufacturing error.

[0089] In the above embodiment, the fixture 110 to which the wiring duct system 1 is attached is a desk, but the wiring duct system 1 may also be attached to a chair on which a user sits. For example, the wiring duct system 1 may be attached to the underside of the seat of the chair, in a position facing the calves of a user sitting on the chair. Even when the wiring duct system 1 is attached to a position facing the calves of a user sitting on the chair, the possibility of a person's body or clothing coming into contact with the first protrusion 29 of the duct main body 2 can be reduced.

[0090] (summary) The above-described embodiments and the like disclose the following aspects.

[0091] The wiring duct system (1) of the first aspect includes a duct body (2) and a cap member (3). The duct body (2) is cylindrical and extends in one direction, with both end portions (21) open in one direction, and a loading device (5) can be attached and detached to a mounting surface (22) extending along the one direction. The cap member (3) is attached to the end portion (21) of the duct body (2). The mounting surface (22) of the duct body (2) is provided with a groove (23) extending along the one direction. A conductive bar (27) is disposed inside the duct body (2) and can be connected to a power receiving plug (51) of the loading device (5) inserted through the groove (23) from the outside of the duct body (2). The mounting surface (22) of the duct body (2) is provided with a first protrusion (29) that abuts against a part of the load device (5) when a part of the power receiving plug (51) is inserted into the groove (23) in an orientation different from the normal mounting direction, thereby preventing the power receiving plug (51) from being inserted into the groove (23). The cap member (3) is provided with a second protrusion (31) that is adjacent to the first protrusion (29) when the cap member (3) is attached to the end portion (21) of the duct body (2). In the normal direction of the mounting surface (22), a first distance (D1) from the mounting surface (22) to the tip of the first protrusion (29) is equal to or less than second distances (D2, D3) from the mounting surface (22) to the tip of the second protrusion (31).

[0092] According to this embodiment, since the first distance (D1) is equal to or less than the second distances (D2, D3), the human body, clothing, etc. will come into contact with the second protrusion (31) before coming into contact with the end of the first protrusion (29). This reduces the possibility that the human body, clothing, etc. will come into contact with the end of the first protrusion (29) provided on the duct body (2).

[0093] In the wiring duct system (1) of the second embodiment, in the first embodiment, the first distance (D1) is equal to or greater than half the second distance (D2, D3).

[0094] According to this embodiment, the step between the second protrusion (31) and the first protrusion (29) can be made smaller than the first distance (D1) from the attachment surface (22) to the tip of the first protrusion (29).

[0095] In the wiring duct system (1) of the third embodiment, in the first or second embodiment, the cap member (3) includes an end cap (3A) for closing the end (21) of the duct body (2).

[0096] According to this embodiment, the end portion 21 of the duct body 2 can be closed with the end cap 3A.

[0097] In the wiring duct system (1) of the fourth aspect, in any one of the first to third aspects, the cap member (3) includes a feed-in cap (3B) for supplying electricity to the conductive bar (27). When the feed-in cap (3B) is attached to the end portion (21) of the duct body (2), the feed-in cap (3B) can supply electricity to the conductive bar (27).

[0098] According to this embodiment, the conductive bar (27) can be supplied with electricity by the feed-in cap (3B).

[0099] In the wiring duct system (1) of the fifth aspect, in any one of the first to fourth aspects, the material of the first protrusion (29) includes a metal material, and the material of the second protrusion (31) includes a synthetic resin material.

[0100] According to this embodiment, the conductive bar (27) can be supplied with electricity by the feed-in cap (3B).

[0101] In the wiring duct system (1) of the sixth aspect, in any of the first to fifth aspects, when the cap member (3) is attached to the duct body (2), the corner of the tip side of the second protrusion (31) is provided with a rounded or tapered shape at the part of the second protrusion (31) opposite the first protrusion (29).

[0102] According to this embodiment, it is possible to reduce the possibility that the human body, clothing, etc. will get caught on the corners on the tip side of the second protrusions (31).

[0103] The wiring duct system (1) of a seventh aspect is any one of the first to sixth aspects, and further includes a loading device (5) that is detachable from the duct body (2).

[0104] According to this aspect, it is possible to provide a wiring duct system (1) that can reduce the possibility that the human body, clothing, etc. will come into contact with the end of the first protrusion (29) provided on the duct body (2).

[0105] The fixture system (100) of the eighth aspect includes the wiring duct system (1) of any one of the first to seventh aspects and a fixture (110) to which the wiring duct system (1) is attached.

[0106] According to this aspect, it is possible to provide a fixture system (100) that can reduce the possibility that the human body, clothing, etc. will come into contact with the end of the first protrusion (29) provided on the duct main body (2).

[0107] In the fixture system (100) of the ninth aspect, in the eighth aspect, when the fixture (110) is installed, the fixture (110) has an eaves portion (116) located above the first protrusion (29) provided on the duct body (2). A length dimension (D4) from the mounting surface (22) to the tip of the eaves portion (116) is greater than a second distance (D2, D3) from the mounting surface (22) to the tip of the second protrusion (31).

[0108] According to this embodiment, it is possible to reduce the possibility that the human body, clothing, or the like will come into contact with the end of the first protrusion (29).

[0109] In the tenth aspect of the fixture system (100), in the ninth aspect, the length dimension (D4) from the mounting surface (22) to the tip of the eaves portion (116) is greater than the protrusion (D5) from the mounting surface (22) of the load equipment (5) attached to the duct body (2).

[0110] According to this embodiment, it is possible to reduce the possibility that the human body, clothing, or the like will come into contact with the end of the first protrusion (29).

[0111] The configurations according to the second to seventh aspects are not essential for the wiring duct system 1 and can be omitted as appropriate. Also, the configurations according to the ninth and tenth aspects are not essential for the fixture system 100 and can be omitted as appropriate. [Explanation of symbols]

[0112] 1. Wiring duct system 2 Duct body 3 Cap member 3A End Cap 3B Feed-in Cap 5 Load equipment 21 End 22 Mounting surface 23 Groove 27 Conductive Bar 29 1st protrusion 31 2nd protrusion 51 Power receiving plug 100 Fixtures System 110 Fixtures 116 Eaves D1 First distance D2,D3 Second distance D4 Length dimension D5 Overhang amount

Claims

1. a duct body having a cylindrical shape extending in one direction, with both ends in the one direction being open, and a loading device being attachable and detachable to an attachment surface along the one direction; a cap member attached to the end of the duct body, A groove extending along the one direction is provided on the mounting surface of the duct body, a conductive bar is disposed inside the duct body and is connectable to a power receiving plug of the load device inserted through the groove from the outside of the duct body; a first protrusion that abuts against a part of the load device when a part of the power receiving plug is inserted into the groove in an orientation different from a normal installation direction is provided on the mounting surface of the duct body, and prevents the power receiving plug from being inserted into the groove; The cap member is provided with a second protrusion that is adjacent to the first protrusion when the cap member is attached to the end of the duct body, a first distance from the mounting surface to a tip of the first protrusion in a normal direction of the mounting surface is equal to or less than a second distance from the mounting surface to a tip of the second protrusion; Wiring duct system.

2. The first distance is equal to or greater than half the second distance. The wiring duct system according to claim 1 .

3. The cap member includes an end cap for closing the end of the duct body. The wiring duct system according to claim 1 .

4. the cap member includes a feed-in cap for feeding power to the conductive bar; When the feed-in cap is attached to the end of the duct body, the feed-in cap can supply electricity to the conductive bar. The wiring duct system according to claim 1 .

5. The material of the first protrusion portion includes a metal material, and the material of the second protrusion portion includes a synthetic resin material. The wiring duct system according to claim 1 .

6. When the cap member is attached to the duct body, a corner of the second protrusion on the side opposite to the first protrusion is rounded or tapered. The wiring duct system according to claim 1 .

7. The load device is further provided detachably attached to the duct body. The wiring duct system according to claim 1 .

8. The wiring duct system according to any one of claims 1 to 7, and fixtures to which the wiring duct system is attached. Fixture system.

9. In the installed state of the fixture, the fixture has an eaves portion located above the duct body, a length dimension from the mounting surface to the tip of the eaves portion is greater than the second distance from the mounting surface to the tip of the second protrusion; The fixture system of claim 8.

10. a length dimension from the mounting surface to the tip of the eaves portion is greater than a protrusion amount of the load device mounted to the duct body from the mounting surface; The fixture system of claim 9.

Images