Adapter and daily appliance

Abstract

The invention provides an adapter and a daily appliance capable of preventing the adapter from being taken out of a wiring pipeline. The adapter is attached to a wiring duct of a wiring duct system that supplies power, is connected to the connector, and transmits power from the wiring duct to the connector. The adapter is provided with: a shaft part which can be inserted into an opening part which is formed in the wiring pipeline and extends along the length direction of the wiring pipeline; two power receiving terminals which protrude in opposite directions from the shaft portion, are connected to a pair of electrodes provided to both ends of the wiring duct in the width direction, and receive the supply of power; and a fixing rib protruding from the shaft portion with the shaft portion as the center. The two power receiving terminals are positioned in the longitudinal direction without receiving the supply of power. The length between both ends of the fixing rib in the width direction is greater than the width of the opening portion when viewed from a depth direction orthogonal to both the longitudinal direction and the width direction without receiving power supply.

Description

Technical Field

[0001] The present disclosure generally relates to an adapter and a daily appliance, and more particularly to an adapter and a daily appliance applicable to a wiring duct system. Background Art

[0002] Patent document 1 (Japanese Patent Application Publication No. 2022-086852) discloses an adapter. The adapter is detachable from a DC pipe of a DC pipe system that supplies DC power and is connected to a connector. The adapter includes an adapter body and a restricting portion.

[0003] The adapter body delivers DC power to the connector. The limiting part is housed or held in the adapter body to limit the removal of the adapter body from the DC pipe system. The limiting part has a lock part that is switched between a locked state and an unlocked state by a specific key, and the removal of the adapter body is limited when the lock part is in the locked state. Summary of the invention

[0004] Problem that the invention aims to solve

[0005] However, in Patent Document 1, if the electrical connection between the adapter and the DC duct is released in the unlocked state, the adapter can be removed from the DC duct. Thus, Patent Document 1 has the following problem: in the unlocked state, the adapter may be removed from the DC duct.

[0006] An object of the present disclosure is to provide an adapter and a daily appliance capable of suppressing removal of the adapter from a wiring duct.

[0007] Solutions for solving problems

[0008] An adapter of one form of the present disclosure is installed in a wiring duct of a wiring duct system that supplies power, and is connected to a connector to transmit the power from the wiring duct to the connector. The adapter includes: a shaft portion that can be inserted into an opening portion formed in the wiring duct and extending along the length direction of the wiring duct; two power receiving terminals that protrude from the shaft portion in opposite directions to each other and receive the power supply by connecting to a pair of electrodes provided at both ends of the width direction of the wiring duct; and a fixing rib that protrudes from the shaft portion with the shaft portion as the center. The two power receiving terminals are positioned along the length direction when not receiving the power supply. When not receiving the power supply, when viewed from a depth direction orthogonal to both the length direction and the width direction, the length between the two ends of the fixing rib in the width direction is longer than the width of the opening portion.

[0009] An everyday appliance according to one aspect of the present disclosure includes the adapter and the wiring duct system.

[0010] Effects of the Invention

[0011] According to the present disclosure, it is possible to suppress the adapter from being removed from the wiring duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a perspective view of the main parts (including a partial cross section) of the adapter and the wiring duct system of this embodiment in the power supply state.

[0013] Figure 2 This is a perspective view of the main parts (including a partial cross section) of the adapter and the wiring duct system of this embodiment in a non-powered state.

[0014] Figure 3 It is a side view of the main parts (including a partial cross section) of the adapter and the wiring duct system of this embodiment in the power supply state.

[0015] Figure 4 It is a side view of the main parts (including a partial cross section) of the adapter and the wiring duct system of this embodiment in a non-powered state.

[0016] Figure 5 This is a rear view of the main parts of the adapter according to this embodiment in a power supply state.

[0017] Figure 6 This is a rear view of the main parts of the adapter of this embodiment in a non-powered state.

[0018] Figure 7 This is a side view of the main part of the adapter of the modified example (the wiring duct system is omitted) in the power supply state.

[0019] Figure 8 This is a side view of the main part of the adapter of the modified example (the wiring duct system is omitted) in the non-powered state.

[0020] Fig. 9 This is a rear view of the main parts of the adapter of the modified example in the power supply state.

[0021] Fig.10 This is a rear view of the main part of the adapter of the modified example in a non-powered state.

[0022] Fig.11 This is a rear view of the main parts of the reference example adapter in the power supply state.

[0023] Fig.12 This is a rear view of the main parts of the reference example adapter in a non-powered state.

[0024] Fig.13It is a perspective view showing an everyday tool according to the present embodiment.

[0025] Fig.14 This is a block diagram showing a configuration example of a system for supplying power to an electric device using the adapter and the duct system of the present embodiment.

[0026] Fig.15 It is a perspective view showing the main part of the wiring duct system according to the present embodiment.

[0027] Fig.16 This is a perspective view showing a state in which the detachable cover is separated from the wiring duct system of the present embodiment.

[0028] Fig.17 It is a perspective view showing a state in which the end cover is further separated from the wiring duct system of the present embodiment.

[0029] Fig.18 It is a front view showing the main part of the wiring duct system according to the present embodiment.

[0030] Fig.19 It is an exploded front view showing the main parts of the wiring duct system according to the present embodiment.

[0031] Fig. 20 It is a cross-sectional view showing a main part of the wiring duct system according to the present embodiment.

[0032] Description of Reference Numerals

[0033] 1. Daily tools; 2. Adapter; 21. Shaft; 22. Power receiving terminal; 23. Fixing rib; 3. Wiring duct system; 31. Wiring duct; 32. Opening; 34. Electrode; 8. Connector. DETAILED DESCRIPTION

[0034] 1. Summary

[0035] Hereinafter, the adapter 2, the wiring duct system 3, and the daily appliance 1 of the present embodiment will be described with reference to the accompanying drawings. The following embodiments are only a part of the various embodiments disclosed herein. As long as the purpose of the present disclosure can be achieved, the following embodiments may be modified in various ways according to the design, etc. The figures referred to in the following embodiments are schematic figures, and the size and thickness ratio of each component in the figure may not necessarily reflect the actual size ratio. The following embodiments, modified examples, and reference examples may also be implemented in appropriate combinations.

[0036] In the following figures, the arrows indicating the up-down direction, left-right direction, and front-back direction are only marked for easy understanding of the description and do not actually exist. In addition, unless otherwise stated below, the "width direction" is consistent with the up-down direction, the "length direction" and "one direction" are consistent with the left-right direction, and the "depth direction" is consistent with the front-back direction.

[0037] like Figure 1 As shown in FIG. 1 , the adapter 2 of the present embodiment is mounted on a wiring duct 31 of a wiring duct system 3 for supplying power. Fig.14 As shown, the connector 8 is connected to the adapter 2. The duct system 3 transmits power from the duct 31 to the connector 8 via the adapter 2. Thus, the electrical device 9 connected to the connector 8 can receive power.

[0038] Figure 1 to Figure 6 One of the features of the adapter 2 shown is that it is difficult to remove it from the wiring duct 31 in the front-back direction. Therefore, it is also difficult to attach the adapter 2 to the wiring duct 31 in the front-back direction. However, the adapter 2 can be removed or attached from one end of the wiring duct 31 in the left-right direction.

[0039] Figure 1 , Figure 3 as well as Figure 5 The power supply state is the state in which power is supplied from the wiring duct 31 to the adapter 2. Figure 3 As shown, the electrode 34 of the wiring duct 31 is electrically connected to the power receiving terminal 22 of the adapter 2. In this power supply state, the fixing rib 23 of the adapter 2 is engaged with the engaging portion 37 of the wiring duct 31. In other words, Figure 5 As shown, 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 out the adapter 2 forward from the wiring duct 31.

[0040] on the other hand, Figure 2 , Figure 4 as well as Figure 6 Indicates a non-powered state. The non-powered state is a state in which power is not supplied from the wiring duct 31 to the adapter 2. Figure 4 As shown in FIG. 1 , the electrode 34 of the wiring duct 31 is not electrically connected to the power receiving terminal 22 of the adapter 2. In this non-powered state, the fixing rib 23 of the adapter 2 is also engaged with the engaging portion 37 of the wiring duct 31. In other words, Figure 6 As shown, 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 out the adapter 2 forward from the wiring duct 31.

[0041] As described above, with the adapter 2 of the present embodiment, it is difficult to pull out the adapter 2 forward from the wiring duct 31 in either the power supply state or the non-power supply state.

[0042] Therefore, according to the present embodiment, it is possible to suppress the adapter 2 from being removed from the wiring duct 31 .

[0043] also, Fig.11 and Fig.12 An adapter 2 of a reference example is shown.

[0044] Fig.11 In this power supply state, the length L23 between the two 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 relative to the wiring duct 31.

[0045] on the other hand, Fig.12 In this non-powered state, the length L23 between the two ends of the fixing rib 23 of the adapter 2 is slightly shorter than the width W32 of the opening 32 of the wiring duct 31. Therefore, the adapter 2 can be easily pulled out forward from the wiring duct 31.

[0046] As described above, with respect to the adapter 2 of the reference example, it is difficult to pull out the adapter 2 forward relative to the wiring duct 31 in the power supply state, but it is easy to pull out the adapter 2 forward relative to the wiring duct 31 in the non-power supply state.

[0047] Therefore, the adapter 2 of the reference example is more likely to be taken out of the wiring duct 31 than the adapter 2 of the present embodiment.

[0048] 2. Details

[0049] (1) Adapter

[0050] First, refer to Figure 1 to Figure 6 Next, the adapter 2 according to the present embodiment will be described.

[0051] The adapter 2 includes a housing 24, an operation portion 25, a mounting protrusion 26, two power receiving terminals 22, a spring housed in the housing 24, and a cover 27. The adapter 2 also includes a pair of connection connectors (USB sockets) housed in the housing 24 and a circuit board. The housing 24, the mounting protrusion 26, the two power receiving terminals 22, the pair of connection connectors, the circuit board, the cover 27, etc. in the adapter 2 constitute the adapter main body 20.

[0052] The housing 24 is made of resin, for example. The housing 24 is a hollow box with one side (rear surface) open. The cover 27 is assembled to the housing 24 by screwing, etc., so that the open side of the housing 24 is closed by the cover 27 (see Figure 5 and Figure 6 The housing 24 has a rectangular shape. The housing 24 has a first insertion port 241 and a second insertion port 242. The first insertion port 241 is used as a connector 8 (see Fig.14 ) is an insertion port for a USB Type-A plug. The second insertion port 242 is an insertion port for a USB Type-C plug as the connector 8. That is, the standard of the first insertion port 241 is different from the standard of the second insertion port 242. The size of the first insertion port 241 is different from the size of the second insertion port 242. In the housing 24, a pair of connection connectors are mounted on the circuit board in a one-to-one correspondence with the first insertion port 241 and the second insertion port 242, respectively. The connector 8 inserted into the first insertion port 241 or the second insertion port 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.

[0053] The first insertion port 241 and the second insertion port 242 are provided on a surface (connector mounting surface 201: on the opposite side to the wiring duct 31) of the adapter 2 when the adapter 2 is mounted on the wiring duct 31. Figure 1 is the front surface). Figure 1 As shown in FIGS. 1 and 1B , the first insertion port 241 and the second insertion port 242 are arranged vertically when the adapter 2 is mounted on the wiring duct 31 .

[0054] The cover 27 is made of resin, for example. A mounting protrusion 26 is provided on the rear surface of the cover 27 (see Figure 3 to Figure 6 The cover portion 27 is formed as a continuous integral body with the mounting protrusion 26. The mounting protrusion 26 includes a shaft portion 21 and a fixing rib 23.

[0055] The shaft portion 21 protrudes from the housing 24 to the side opposite to the connector mounting surface 201. The shaft portion 21 can be inserted into the opening 32 of the wiring duct 31 (see Figure 3 and Figure 4 The central axis of the shaft 21 is substantially consistent with the rotation axis B1. The adapter 2 can be rotated about the rotation axis B1 by a predetermined angle (eg, 90 degrees) relative to the wiring duct 31. The rotation axis B1 is a virtual axis.

[0056] The fixing rib 23 protrudes from the side of the shaft portion 21. Specifically, Figure 3 to Figure 6 As shown, the fixing rib 23 protrudes from the shaft portion 21 with the shaft portion 21 as the center. In other words, the fixing rib 23 protrudes radially outward of an imaginary circle with the rotation axis B1 as the center.

[0057] In this embodiment, the fixing rib 23 protrudes from the entire circumference of the shaft portion 21. The fixing rib 23 has a thick wall portion 234 and a thin wall portion 235 (see Figure 3 to Figure 6). The thickness of the thin-walled portion 235 is thinner than that of the thick-walled portion 234. The thin-walled portion 235 exists in a part of the outer periphery of the fixed rib 23. The thin-walled 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 extending in one direction with a constant width. The second edge portion 232 is a portion extending in a direction orthogonal to the first edge portion 231 with the same width as the first edge portion 231. The third edge portion 233 is an arc-shaped portion smoothly connecting the first edge portion 231 and the second edge portion 232 with the same width as the first edge portion 231 and the second edge portion 232.

[0058] Furthermore, in this embodiment, when no power is supplied (that is, Figure 4 and Figure 6 In the non-powered state shown in FIG. 1 , when viewed from the depth direction (front-rear direction) orthogonal to both the length direction and the width direction, in the width direction, the length L23 between the two ends of the fixing rib 23 is longer than the width W32 of the opening 32 (see FIG. 1 ). Figure 6 ).

[0059] More specifically, in the present embodiment, in any radial direction centered on the shaft portion 21, the length L23 between the two ends of the fixing rib 23 is longer than the width W32 of the opening portion 32. In other words, when viewed along the front-rear direction, the distance between two intersection points between any straight line intersecting the rotation axis B1 and the outer periphery of the fixing rib 23 is longer than the width W32 of the opening portion 32.

[0060] 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 (see Figure 5 and Figure 6 In the direction in which the two power receiving terminals 22 protrude (in Figure 5 The length L23 between the two ends of the fixing rib 23 is longer than the 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 Figure 3 ).

[0061] The adapter 2 has a limiting recess 28 (see Figure 5 and Figure 6 The limiting recess 28 is composed of a recess formed on the rear end surface of the housing 24 and the surface of the cover 27. Specifically, the limiting recess 28 includes a first recess 281 and a second recess 282.

[0062] The first recess 281 is formed by lowering a portion of the rear end surface of the housing 24 by one step toward the connector mounting surface 201. Figure 5 and Figure 6 In FIG. 1 , for easy understanding, the region of the first recess 281 is indicated by darker dotted hatching.

[0063] The second recess 282 is formed by lowering a portion of the surface of the cover 27 toward the connector mounting surface 201. Figure 5 and Figure 6 In the figure, for easy understanding, the region of the second recess 282 is represented by light dotted hatching and a portion surrounded by the light dotted hatching. The bottom surface of the first recess 281 is substantially flush with the bottom surface of the second recess 282.

[0064] The operating portion 25 is configured to be pluggable relative to the opening portion 32, and is configured to restrict the rotation of the adapter 2 by being inserted into the opening portion 32. The operating portion 25 is held by the housing 24. The operating portion 25 is made of, for example, resin. The operating portion 25 is plate-shaped. The operating portion 25 has an anti-slip portion 251 on its surface, and the operating portion 25 is held by the housing 24 in a state where the surface having the anti-slip portion 251 is exposed from one side of the housing 24. By applying force to the anti-slip portion 251 with a fingertip of a person, the operating portion 25 can be moved in a predetermined direction (in a predetermined direction). Figure 1 The operating portion 25 is held in the housing 24 in a state where the restoring force of the spring housed in the housing 24 acts on the operating portion 25 in a direction (rearward) in which the operating portion 25 is away from the connector mounting surface 201. Therefore, when no force is applied to the operating portion 25, the top end (claw 250) of the operating portion 25 protrudes from the housing 24 to the side opposite to the connector mounting surface 201. The operating portion 25 slides forward by applying a force to the anti-slip portion 251 forward by using a fingertip of a person or the like to overcome the force of the spring.

[0065] The adapter 2 also includes a power converter. A plurality of electronic components constituting the power converter are mounted on a circuit board in the housing 24. The power converter converts the power received by 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 connection connectors (USB ports). Fig.14 ) can be connected to the first insertion port 241 or the second insertion port 242 by means of a connector 8 (refer to Fig.14 ) cable to receive power.

[0066] (2) Wiring duct system

[0067] Next, refer to Figures 15 to 20Next, the duct system 3 according to the present embodiment will be described.

[0068] The wiring duct system 3 is used as a part of the daily equipment 1 (described later). The wiring duct system 3 includes a wiring duct 31, an end cap 5, and a detachable cover 6. Figures 15 to 20 In the figure, a base 4 is shown, and the base 4 will be discussed later.

[0069] The wiring duct 31 is a member extending in one direction. Thus, the wiring duct 31 extends in the longitudinal direction (in this embodiment, the left-right direction). 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.

[0070] The first guide rail 351 has a square tube shape. The first guide rail 351 is made of metal, for example. The first guide rail 351 extends in the longitudinal direction (left-right direction).

[0071] The first guide rail 351 includes an opening 32. The opening 32 is formed along the longitudinal direction (left-right direction) of the duct guide rail 35. More specifically, the opening 32 is formed across both ends of the longitudinal direction of the duct guide 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.

[0072] In this embodiment, the opening 32 opens forward. The width W32 of the opening 32 is narrower than the width W31 of the wiring duct 31 (see Figure 5 and Figure 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 .

[0073] The first guide rail 351 further includes a restriction protrusion 39. The restriction protrusion 39 is a protrusion. The restriction protrusion 39 is provided at the lower portion of the first guide rail 351. The restriction protrusion 39 can be inserted into the restriction recess 28 of the adapter 2.

[0074] The wiring duct 31 has end openings 36 at both ends in the longitudinal direction (left-right direction). One end opening 36 opens on the right side, and the other end opening 36 opens on the left side. Both end openings 36 are connected to the opening 32 .

[0075] like Figure 3 and Figure 4 As shown, the first guide rail 351 further includes two engaging portions 37 and two mounting grooves 38 .

[0076] The two fitting parts 37 are grooves. The two fitting parts 37 are provided on the inner surface of the duct rail 35 (first rail 351). The two fitting parts 37 are opposite to each other in the up-down direction. The two fitting parts 37 are formed along the length direction (left-right direction) of the duct rail 35. In more detail, the two fitting parts 37 are formed across both ends of the length direction of the duct rail 35.

[0077] like Figure 3 and Figure 4 As shown, the widths (groove widths) of the two interlocking portions 37 are different. The width of the interlocking portion 37 on one side (upper side) is substantially equal to the thickness of the thick-walled portion 234 of the fixed rib 23. The interlocking portion 37 on the other side (lower side) has a wide portion 371 and a narrow portion 372. The width of the narrow portion 372 is narrower than the width of the wide portion 371. The narrow portion 372 is connected to the wide portion 371 in the up and down direction. The width of the wide portion 371 is substantially equal to the thickness of the thick-walled portion 234 of the fixed rib 23. The width of the narrow portion 372 is substantially equal to the thickness of the thin-walled portion 235 of the fixed rib 23.

[0078] The two fitting parts 37 fit with the fixing ribs 23 of the adapter 2. Thus, the adapter 2 is mounted on the wiring duct 31. That is, the duct rail 35 (first rail 351) includes an adapter mounting part (two fitting parts 37) for mounting the adapter 2. The procedure for mounting the adapter 2 on the wiring duct 31 will be described below.

[0079] Two mounting grooves 38 are provided on the inner surface of the duct rail 35 (first rail 351). The two mounting grooves 38 are opposite to each other in the up-down direction. Of the two fitting parts 37 and the two mounting grooves 38, the two fitting parts 37 are provided near the opening 32. The two mounting grooves 38 are formed along the length direction (left-right direction) of the duct rail 35. More specifically, the two mounting grooves 38 are formed across both ends of the length direction of the duct rail 35.

[0080] The two mounting grooves 38 correspond to the two second guide rails 352 in a one-to-one manner. The corresponding second guide rail 352 is fitted into each mounting groove 38. Thus, the two second guide rails 352 are mounted on the first guide rail 351.

[0081] The two second guide rails 352 extend in the longitudinal direction (left-right direction) respectively. The two second guide rails 352 are opposite to each other in the vertical direction. The shape of the cross section of the second guide rail 352 perpendicular to the left-right direction is U-shaped. The second guide rail 352 has electrical insulation. The second guide rail 352 is formed of a synthetic resin material such as PVC (polyvinyl chloride). The second guide rail 352 holds the electrode 34 inside.

[0082] The pair of electrodes 34 are provided at both ends of the width direction (in this embodiment, the vertical direction) of the wiring duct 31. Thus, the pair of electrodes 34 face each other in the vertical direction. The pair of electrodes 34 extend in the length direction (left-right direction). The pair of electrodes 34 are provided from the right end to the left end of the duct rail 35. The pair of electrodes 34 are connected to the corresponding wiring W1 (see FIG. 1 ) by means of a feed-in 91. Fig.14 ) is electrically connected. One of the pair of electrodes 34 of the wiring duct 31 is electrically connected to the wiring W1 on the positive side, and the other is electrically connected to the wiring W1 on the negative side. Thus, DC power is supplied to the pair of electrodes 34. The two power receiving terminals 22 of the adapter 2 receive power supply by being connected to the pair of electrodes 34.

[0083] The end cap 5 is mounted on one end (the right end in this embodiment) of the wiring duct 31. Thus, the end cap 5 closes the end surface opening 36 of one end of the wiring duct 31. The end cap 5 includes a closing portion 51, two guide portions 52, an insertion portion 54, and two insertion pieces 55. In addition, a feed-in portion 91 (see FIG. 1 ) is mounted on the other end of the wiring duct 31. Fig.14 ).

[0084] The outer peripheral shape of the sealing portion 51 is substantially the same as the outer peripheral shape of the wiring duct 31 when viewed in the left-right direction. In the present embodiment, the sealing portion 51 is in the shape of a rectangular plate. The width of the sealing portion 51 is equal to the width W5 of the end cap 5. The end cap 5 has the same width as the width W31 of the wiring duct 31.

[0085] An inclined surface 57 is formed in front of the blocking portion 51. The inclined surface 57 is a surface that is inclined so as to extend rearward as it goes toward the right side.

[0086] The two guide portions 52 are formed on one surface of the blocking portion 51 (the surface facing the right side in the present embodiment). The two guide portions 52 are L-shaped when viewed along the front-to-back direction. The two guide portions 52 extend in the front-to-back direction. A guide groove 53 is formed between the top end of each of the two guide portions 52 and one surface of the blocking portion 51. The guide groove 53 extends in the front-to-back direction. The two guide grooves 53 are open on opposite sides to each other. That is, the upper guide groove 53 is open on the upper side, and the lower guide groove 53 is open on the lower side.

[0087] The insertion portion 54 is a portion inserted into the wiring duct 31 from the end surface opening 36 of the wiring duct 31. The insertion portion 54 is formed on the other surface of the sealing portion 51 (the surface facing the left side in the present embodiment).

[0088] A fixing hole 56 is formed in the insertion portion 54. The fixing hole 56 is a hole used to fix the end cover 5 to the wiring duct 31. The fixing hole 56 is open in the front-to-back direction. A special screw is screwed into the fixing hole 56 using a special tool. A special screw is a screw of a shape that cannot be rotated using a general tool such as a normal screwdriver (for example, a Phillips screwdriver, a flat-blade screwdriver, etc.). As an example of a special screw, a screw with an inner hexagonal hole can be listed. A special tool is a tool that can rotate a special screw. In this way, the end cover 5 is installed on the wiring duct 31 using a special tool.

[0089] The two insertion pieces 55 are formed on the upper side and the lower side of the insertion portion 54, respectively. The two insertion pieces 55 extend in the left-right direction. The two insertion pieces 55 correspond to the two fitting portions 37 of the first guide rail 351 in a one-to-one manner. The upper insertion piece 55 fits with the upper fitting portion 37, and the lower insertion piece 55 fits with the lower fitting portion 37.

[0090] The detachable cover 6 is a cover that can be detached from the end cover 5. The detachable cover 6 is installed on the end cover 5 along one direction (left-right direction). In this embodiment, the detachable cover 6 is installed on the right side of the end cover 5 in a manner adjacent to the end cover 5. The detachable cover 6 is in the shape of a rectangular box. The detachable cover 6 includes a main body 60 and two guide pieces 61 (see Fig.19 ).

[0091] The main body 60 is in the shape of a rectangular box, and is open at the rear surface and the surface facing the left side. The width of the main body 60 is equal to the width W6 of the detachable cover 6. The detachable cover 6 has the same width as the width W31 of the wiring duct 31. In other words, the width W31 of the wiring duct 31, the width W5 of the end cover 5, and the width W6 of the detachable cover 6 are equal.

[0092] An inclined surface 62 is formed at the front left side of the main body 60. The inclined surface 62 is a surface inclined in a manner extending rearward as it moves toward the right side. The inclined surface 62 is opposite to the inclined surface 57 of the end cover 5. In this way, the inclined surface 62 of the disassembly cover 6 is opposite to the inclined surface 57 of the end cover 5, and a disassembly hole 63 is formed therebetween. A general tool such as a flat-blade screwdriver is inserted into the disassembly hole 63, and the disassembly cover 6 is moved forward using the lever principle. In this way, the disassembly cover 6 can slide in a direction perpendicular to a direction and the width direction of the wiring duct 31 (in this embodiment, the front-back direction).

[0093] The two guide pieces 61 correspond to the two guide grooves 53 of the end cover 5 in a one-to-one manner. Each guide piece 61 extends in the front-to-back direction. The two guide pieces 61 are opposite to each other in the up-down direction. That is, the upper guide piece 61 protrudes downward, and the lower guide piece 61 protrudes upward. The thickness of the guide piece 61 is substantially equal to the thickness of the guide groove 53. Each guide piece 61 can be inserted into the corresponding guide groove 53. Thus, the disassembly cover 6 can be combined with the end cover 5, and the disassembly cover 6 can be slid in the front-to-back direction relative to the end cover 5.

[0094] In one direction (left-right direction), the length L6 of the detachable cover 6 is longer than the length L5 of the end cover 5. In one direction (left-right direction), the length L6 of the detachable cover 6 is longer than the length of a portion of the adapter 2 inserted into the wiring duct 31. The portion of the adapter 2 is a portion that exists at a position further back than the rear surface of the cover 27. Specifically, it is the mounting protrusion 26. Preferably, when viewed along the front-back direction, the length L6 of the detachable cover 6 is longer than the distance between two intersection points between an arbitrary straight line intersecting the rotation axis B1 and the outer periphery of the fixing rib 23.

[0095] (3) Daily Utensils

[0096] Next, refer to Fig.13 and Fig.14 Next, an everyday tool 1 according to the present embodiment will be described.

[0097] The daily appliance 1 includes an adapter 2 and a wiring duct system 3. Fig.13 The diagram shows the daily appliance 1 in a state where the adapter 2 is removed from the wiring duct system 3 .

[0098] Here, the daily utensil 1 is a general term for furniture and spare parts used in residential or non-residential areas. An example of the daily utensil 1 is a table, a platform, a workbench, etc. used as a table for placing items. Another example of the daily utensil 1 is a shelf, a box, a dresser, a bed, a whiteboard, a shield, a partition, a bench, etc.

[0099] Hereinafter, a case where the daily tool 1 is the table 10 will be described, but the daily tool 1 is not limited to the table 10 .

[0100] The daily equipment 1 further includes a table 10 , a pipe fixing device 11 , and a partition 12 .

[0101] The table 10 has a top plate 13 that is rectangular in shape when viewed from above, two leg portions 14, and two support stands 15. One of the two leg portions 14 protrudes downward from near the right end of the top plate 13, and the other protrudes downward from near the left end of the top plate 13. The two support stands 15 correspond to the two leg portions 14 in a one-to-one manner. Each support stand 15 is connected to the lower end of the corresponding leg portion 14 to support the leg portion 14.

[0102] The duct fixing tool 11 is a member for fixing the wiring duct system 3 to the table 10. The duct fixing tool 11 has a first fixing portion 111 and a second fixing portion 112.

[0103] 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 arranged so as to partition the front and rear of the table 10.

[0104] The second fixing portion 112 is a member for fixing the first fixing portion 111 to the table 10. The second fixing portion 112 is connected to both left and right ends of the first fixing portion 111. The second fixing portion 112 includes a clamping mechanism, and the second fixing portion 112 is fixed to the table 10 by clamping the table 10 in the vertical direction.

[0105] The partition 12 is in the shape of a rectangular plate and is held by the pipe fixing device 11. The partition 12 partitions the front and back of the table 10. In the present embodiment, the partition 12 is light-transmissive. The material of the partition 12 is, for example, acrylic resin.

[0106] Next, refer to Fig.14 Next, an example of a power supply system in the daily appliance 1 will be described. The power supply system is a system for supplying power to the electric device 9 using the adapter 2 and the wiring duct system 3 .

[0107] The types of electrical equipment 9 are not particularly limited. Examples of the electrical equipment 9 include computer terminals (personal computers, smartphones, tablet terminals, etc.), computer terminal accessories (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 (desktop fans, etc.).

[0108] like Fig.14 As shown, a switching hub 93 and a splitter 94 are installed in a facility at a place where the electric 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.

[0109] The switching hub 93 is a PoE switching hub corresponding to PoE (Power over Ethernet). The switching hub 93 is electrically connected to the separator 94 via a LAN (Local Area Network) cable. The switching hub 93 can also be electrically connected to devices corresponding to PoE. Devices corresponding to PoE are, for example, computer terminals, network cameras, IP (Internet Protocol) phones, and wireless access points. PoE signals having data and power (DC power) can be delivered between the switching hub 93 and the devices electrically connected to the switching hub 93.

[0110] The separator 94 is a PoE separator corresponding to PoE. The separator 94 separates the PoE signal received from the switching hub 93 into data and power (DC power). The separator 94 supplies the power separated from the PoE signal to the device not corresponding to PoE. As an example, the separator 94 supplies the power separated from the PoE signal to one or more electrical devices 9 not corresponding to PoE via the wiring duct system 3.

[0111] The separator 94 transmits a data signal including data separated from the PoE signal to a device not corresponding to PoE.

[0112] The output terminal of the DC power of the separator 94 is electrically connected to the first end of each of the two wirings W1. The two wirings W1 are wiring on the positive side and wiring on the negative side. The two wirings W1 correspond to the two electrodes 34 of the wiring duct 31 in a one-to-one manner. The second end of each of the two wirings W1 is electrically connected to the corresponding electrode 34 via the feed-in section 91. The adapter 2 can be connected to the wiring duct 31, and the electrical device 9 can be electrically connected to each electrode 34 via the adapter 2.

[0113] As described above, the electrical device 9 can receive power supplied from the wiring W1 via the electrode 34 and the adapter 2. Fig.13 ) or around a table 10.

[0114] (4) Installation and removal of adapters from wiring ducts

[0115] Next, refer to Figures 15 to 20 The following describes how the adapter 2 is attached to and detached from the wiring duct 31. Figures 15 to 20 The base 4 shown corresponds to Fig.13 The first fixing part 111 of the daily utensil 1 is shown. For the convenience of explanation, the base 4 is shown in the figure as a rectangular parallelepiped, but it is not limited to this shape.

[0116] A storage groove 41 and a work space 42 are formed on a surface (in this embodiment, the front surface) of the base 4. The storage groove 41 and the work space 42 are recessed toward the rear.

[0117] The storage groove 41 is a groove for storing the wiring duct 31. The wiring duct 31 stored in the storage groove 41 is exposed from the base 4. Specifically, the front surface (the surface where the opening 32 is formed) of the wiring duct 31 is exposed from the base 4. The end cap 5 (front part) attached to the wiring duct 31 is also exposed from the base 4.

[0118] The storage groove 41 extends in the left-right direction. The width of the storage groove 41 is substantially equal to the width W31 of the wiring duct 31. The depth of the storage groove 41 is substantially equal to the length of the wiring duct 31 in the front-back direction. In this way, the wiring duct 31 does not protrude from the base 4 except for the restriction protrusion 39. The wiring duct 31 is fixed to the storage groove 41 by screw fixing or the like. The end cap 5 attached to the wiring duct 31 also does not protrude from the base 4.

[0119] The work space 42 is a space used when performing the installation and removal of the adapter 2 (see Fig.16 and Fig.17 ). In addition, before and after the adapter 2 is removed, the work space 42 is blocked by the removal cover 6. In this way, the removal cover 6 is exposed from the base 4. Specifically, the front surface of the removal cover 6 is exposed from the base 4.

[0120] The working space 42 is formed continuously with one end (the right end in this embodiment) of the storage groove 41. The width of the working space 42 is substantially equal to the width of the storage groove 41. The depth of the working space 42 is substantially equal to the depth of the storage groove 41. The length L42 of the working space 42 is substantially equal to the length L6 of the detachable cover 6, and is longer than the length L5 of the end cover 5 (refer to FIG. Fig.19 The depth of the working space 42 is substantially equal to the height (the distance in the front-rear direction) of the detachable cover 6 (see Fig. 20 ). Therefore, the surface (front surface) of the base 4 is substantially flush with the surface (front surface) of the detachable cover 6. Thus, the detachable cover 6 does not protrude from the base 4.

[0121] Next, a procedure for attaching the adapter 2 to the wiring duct 31 will be described.

[0122] like Fig.15 As shown, when the installation work of the adapter 2 is started, the wiring duct 31 , the end cap 5 , and the detachable cover 6 are buried in the base 4 .

[0123] First, insert a general tool such as a flat-blade screwdriver into the disassembly hole 63, and use the lever principle to move the disassembly cover 6 forward (see Fig.16 ). Thus, the working space 42 is revealed.

[0124] Next, the end cover 5 is slid to the right until it reaches the working space 42. Thereafter, the end cover 5 is moved forward from the working space 42 (see Fig.17 ). The length L42 of the working space 42 is longer than the length L5 of the end cover 5 (refer to Fig.19 ), therefore, the end cover 5 can be easily removed from the working space 42.

[0125] Next, a portion of the adapter 2 is inserted from one end of one direction of the wiring duct 31 (the end surface opening 36 facing the working space 42). As described above, a portion of the adapter 2 is a portion (mounting protrusion 26) that is located at a position rearward of the rear surface of the cover 27. Among them, the fitting portion 37 of the wiring duct 31 is open at the end surface opening 36. Therefore, the fixing rib 23 of the adapter 2 can be inserted into the fitting portion 37 of the wiring duct 31 along the left-right direction so that the fixing rib 23 of the adapter 2 and the fitting portion 37 of the wiring duct 31 are fitted. Thereafter, the adapter 2 is moved in the left-right direction to a predetermined position (a position desired by the user) of the wiring duct 31. At this time, in order to avoid wear of the two power receiving terminals 22, it is preferable to move the adapter 2 in a state where the two power receiving terminals 22 are positioned along the length direction (left-right direction). That is, this state is a non-power supply state (refer to Figure 4 ), therefore, the two power receiving terminals 22 are not in contact with the electrode 34 and do not receive power supply.

[0126] When a part of the adapter 2 is inserted from the end opening 36 of the wiring duct 31, the thick portion 234 of the fixing rib 23 is inserted into the wide portion 371 of the fitting portion 37, and the thin portion 235 of the fixing rib 23 is inserted into the narrow portion 372 of the fitting portion 37 (see FIG. 2 ). Figure 4 If the adapter 2 is oriented in the wrong direction, the thick wall portion 234 of the fixing rib 23 interferes with the narrow width portion 372 of the fitting portion 37 , so that the adapter 2 cannot be inserted from the end surface opening 36 of the wiring duct 31 .

[0127] Based on the same subject as above, when a part of the adapter 2 is inserted from the end surface opening 36 of the wiring duct 31, the restriction protrusion 39 of the wiring duct 31 is inserted into the restriction recess 28 (see Figure 4 If the orientation of the adapter 2 is incorrect, the restricting protrusion 39 interferes with the area of ​​the rear surface of the adapter 2 that protrudes one level relative to the restricting recess 28, so that the adapter 2 cannot be inserted from the end surface opening 36 of the wiring duct 31. That is, the restricting recess 28 and the restricting protrusion 39 restrict the orientation of the adapter 2.

[0128] Then, if Figure 2After the adapter 2 is moved to a predetermined position of the wiring duct 31 (the base 4 is omitted in the figure), the adapter 2 is rotated 90 degrees around the rotation axis B1 (see Figure 1 ). Therefore, from Figure 4 The unpowered state shown changes to Figure 3 That is, the two power receiving terminals 22 are in contact with the electrodes 34 to receive the power supply. Figure 1 and Figure 3 As shown, the rotation of the adapter 2 (housing 24 ) is restricted by inserting the claw portion 250 of the operation portion 25 into the opening portion 32 of the wiring duct 31 .

[0129] Next, the end cap 5 is oriented to Fig.17 That is, after the end cap 5 is placed in the working space 42, the insertion piece 55 of the end cap 5 is inserted into the fitting portion 37 of the wiring duct 31 and the end cap 5 is slid to the left in this state. Thus, the end face opening 36 of the wiring duct 31 is closed by the end cap 5.

[0130] Next, move the disassembly cover 6 to the Fig.16 That is, the guide piece 61 of the disassembly cover 6 is inserted into the guide groove 53 of the end cover 5, and in this state, the disassembly cover 6 is slid backward and placed into the working space 42. In this way, the working space 42 can be blocked by the disassembly cover 6 (see Fig.15 ).

[0131] The adapter 2 can be mounted on the wiring duct 31 by the above-mentioned steps. In addition, the adapter 2 can be removed from the wiring duct 31 by performing the above-mentioned steps in reverse.

[0132] 3. Modifications

[0133] (1) Modification of adapter

[0134] Reference Figure 7 to Figure 10 Next, a modification of the adapter 2 will be described. In this modification, components similar to those of the above-described embodiment are denoted by the same reference numerals as those of the above-described embodiment, and detailed description thereof may be omitted.

[0135] The shape of the fixing rib 23 of the adapter 2 of the modified example is different from the shape of the fixing rib 23 of the adapter 2 of the above embodiment. Specifically, the fixing rib 23 of the adapter 2 of the modified example is a circle centered on the rotation axis B1 when viewed along the front-back direction. The outer periphery of the thick wall portion 234 and the outer periphery of the thin wall portion 235 are concentric circles. There is an annular outer peripheral edge portion 236 between the outer periphery of the thick wall portion 234 and the outer periphery of the thin wall portion 235.

[0136] (2) Reference example of adapter

[0137] Reference Fig.11 and Fig.12 Next, a reference example of the adapter 2 will be described. In this reference example, components similar to those of the above-described embodiment are denoted by the same reference numerals as those of the above-described embodiment, and detailed description thereof may be omitted.

[0138] The shape of the fixing rib 23 of the adapter 2 of the reference example is different from the shape of the fixing rib 23 of the adapter 2 of the above-mentioned embodiment. Specifically, in the direction in which the two power receiving terminals 22 protrude (in Fig.11 In the vertical direction, the length L23 between the two ends of the fixing rib 23 is longer than the width W32 of the opening 32. However, in the direction perpendicular to the direction in which the two power receiving terminals 22 protrude (in the vertical direction), the length L23 between the two ends of the fixing rib 23 is longer than the width W32 of the opening 32. Fig.12 In the up-down direction, the length L23 between the two ends of the fixing rib 23 is less than the width W32 of the opening 32.

[0139] (3) Others

[0140] In the present embodiment, the duct system 3 is described as a DC duct system that supplies DC (direct current) power, but the duct system 3 may be an AC duct system that supplies AC (alternating current) power.

[0141] In this embodiment, the case where the switching hub 93 and the splitter 94 are installed in the facility at the place where the electric device 9 is used is described (see Fig.14 ), but is not limited to this case. For example, an AC adapter may be provided instead of the switching hub 93 and the separator 94. The AC adapter converts the 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.

[0142] In the present embodiment, the end cap 5 and the detachable cover 6 are attached to the right end of the wiring duct 31 , but may be attached to the left end of the wiring duct 31 .

[0143] 4. Advantages

[0144] Advantages of the adapter 2, the wiring duct system 3, and the daily appliance 1 according to the present embodiment will be described below.

[0145] Compared with the adapter 2 of the reference example, the adapter 2 of the present embodiment is suppressed from being taken out of the wiring duct 31 .

[0146] In the adapter 2 of the reference example, particularly in the non-powered state, the length L23 between the two ends of the fixing rib 23 is shorter than the width W32 of the opening 32 of the wiring duct 31 (see FIG. Fig.12). Therefore, in the adapter 2 of the reference example, if the adapter 2 of the reference example is rotated about the rotation axis B1 to change from the power supply state to the non-power supply state, basically anyone can remove the adapter 2 from the wiring duct 31.

[0147] In contrast, in the adapter 2 of the present embodiment, particularly in the non-powered state, the length L23 between the two ends of the fixing rib 23 is longer than the width W32 of the opening 32 of the wiring duct 31 (see FIG. Figure 6 ). Therefore, in the non-powered state, even if the adapter 2 is pulled out to the front (front), it is difficult to pull out the adapter 2 from the wiring duct 31 due to the interference between the fixing rib 23 and the edge of the opening 32. Therefore, it is possible to suppress the adapter 2 from being taken out of the wiring duct 31. However, the adapter 2 in the non-powered state is only difficult to move in the front-to-back direction, but can move in the left-to-right direction. That is, even if the adapter 2 of this embodiment is not separated from the wiring duct 31, the adapter 2 of this embodiment can be freely moved along the length direction (left-to-right direction) of the wiring duct 31.

[0148] In the adapter 2 of this embodiment, in the power supply state, the length L23 between the two ends of the fixing rib 23 is also longer than the width W32 of the opening 32 of the wiring duct 31 (see FIG. Figure 5 ). Therefore, even in the power supply state, it is possible to suppress the adapter 2 from being removed from the front surface (the surface where the opening 32 is formed) of the wiring duct 31. The same is true for the adapter 2 of the modified example.

[0149] Furthermore, in the adapter 2 of the present embodiment, in any radial direction centered on the shaft portion 21 (particularly the rotation axis B1), the length L23 between the two ends of the fixing rib 23 is longer than the width W32 of the opening portion 32. Therefore, even if the adapter 2 is rotated at any angle around the rotation axis B1, it is difficult to pull out the adapter 2 from the wiring duct 31. Therefore, it is difficult to pull out the adapter 2 from the wiring duct 31 to the front. Therefore, it is possible to further suppress the removal of the adapter 2 from the front of the wiring duct 31. In addition, the same is true for the adapter 2 of the modified example.

[0150] In addition, the wiring duct system 3 of the present embodiment includes the wiring duct 31, the end cap 5, and the detachable cover 6. In particular, the wiring duct system 3 includes the detachable cover 6, so that it is easy to ensure the working space 42 required for the detachment and assembly operation of the adapter 2. Therefore, even if the wiring duct 31 is buried in the base 4, the adapter 2 can be easily detached from the wiring duct 31. In addition, the working space 42 is blocked by the detachable cover 6 before and after the detachment and assembly operation of the adapter 2, so the appearance is not damaged.

[0151] The length L6 of the detachable cover 6 is longer than the length L5 of the end cap 5 and the length of a portion of the adapter 2 (the mounting protrusion 26 in this embodiment). Therefore, the space required for attaching and detaching the adapter 2 can be secured as the work space 42 .

[0152] Moreover, although the movement of the detachable cover 6 in the up-down direction and the left-right direction is restricted, the detachable cover 6 can slide in the front-back direction. Therefore, even if the detachable cover 6 is embedded in the base 4, the detachable cover 6 can be easily attached and detached.

[0153] In addition, the end cap 5 is attached to the wiring duct 31 using a dedicated tool. Therefore, even if the detachable cover 6 is removed, the adapter 2 can be prevented from being removed from the wiring duct 31.

[0154] In addition, the daily appliance 1 of the present embodiment includes the adapter 2 of the present embodiment and the wiring duct system 3 of the present embodiment, so that the adapter 2 can be suppressed from being taken out of the wiring duct 31. Moreover, since the wiring duct 31 is buried in the base 4, the adapter 2 can be easily attached and detached relative to the wiring duct 31. In addition, compared with the adapter 2 of the present embodiment and the modified example, the adapter 2 of the reference example is easy to be taken out, but the daily appliance 1 may also include the adapter 2 of the reference example.

[0155] In addition, in the daily appliance 1 of the present embodiment, the wiring duct 31, the end cap 5, and the detachable cover 6 are embedded in the base 4. By removing the detachable cover 6, the working space 42 is exposed. In addition, the end cap 5 can also be removed by using the working space 42. Therefore, even if the wiring duct 31 is not removed from the base 4, the adapter 2 can be easily detached from the wiring duct 31.

[0156] 5. Morphology

[0157] As is obvious from the above-described embodiment and modified examples, the present disclosure includes the following aspects. In the following, reference numerals are given in parentheses only to clarify the correspondence with the embodiment.

[0158] The first embodiment is an adapter 2 which is mounted on a wiring duct 31 of a wiring duct system 3 for supplying electric power, and is connected to a connector 8 so as to supply the electric power from the wiring duct 31 to the connector 8. The adapter 2 includes: a shaft 21 which can be inserted into an opening 32 formed in the wiring duct 31 and extending along the longitudinal direction of the wiring duct 31; two power receiving terminals 22 which protrude from the shaft 21 in opposite directions to each other and receive the supply of electric power by connecting to a pair of electrodes 34 provided at both ends in the width direction of the wiring duct 31; and a fixing rib 23 which protrudes from the shaft 21 with the shaft 21 as the center. The two power receiving terminals 22 are positioned along the longitudinal direction when not receiving the supply of electric power. When not receiving the supply of electric power, when viewed from the depth direction orthogonal to both the longitudinal direction and the width direction, the length L23 between the two ends of the fixing rib 23 in the width direction is longer than the width W32 of the opening 32.

[0159] According to this aspect, it is possible to suppress the adapter 2 from being removed from the wiring duct 31 .

[0160] The second embodiment is an adapter 2 based on the first embodiment. In the second embodiment, the fixing rib 23 protrudes from the entire circumference of the shaft 21. In the protruding direction of the two power receiving terminals 22, the length L23 between both ends of the fixing rib 23 is longer than the width W32 of the opening 32.

[0161] According to this aspect, it is possible to suppress the adapter 2 from being removed from the front surface (the surface where the opening 32 is formed) of the wiring duct 31 .

[0162] The third embodiment is an adapter 2 according to the second embodiment. In the third embodiment, in any radial direction around the shaft portion 21 , the length L23 between both ends of the fixing rib 23 is longer than the width W32 of the opening 32 .

[0163] According to this aspect, it is possible to further suppress the adapter 2 from being removed from the front surface of the wiring duct 31 .

[0164] A fourth aspect is an everyday appliance 1 including the adapter 2 according to any one of the first to third aspects and the wiring duct system 3 .

[0165] According to this aspect, it is possible to suppress the adapter 2 from being removed from the wiring duct 31 .

Claims

1. An adapter installed in a wiring duct of a wiring duct system for supplying electric power and connected to a connector, wherein the electric power is transmitted from the wiring duct to the connector, The adapter has: a shaft portion that can be inserted into an opening portion formed in the wiring duct and extending along the length direction of the wiring duct; two power receiving terminals protruding from the shaft in opposite directions to each other and receiving the supply of the power by connecting to a pair of electrodes provided at both ends in the width direction of the wiring duct; as well as a fixing rib protruding from the shaft portion with the shaft portion as the center, The two power receiving terminals are positioned along the length direction when not receiving the power supply. When not receiving the supply of the electric power, when viewed from a depth direction perpendicular to both the longitudinal direction and the width direction, a length between both ends of the fixing rib in the width direction is longer than a width of the opening.

2. The adapter according to claim 1, wherein: The fixing rib protrudes from the entire circumference of the shaft portion, In the direction in which the two power receiving terminals protrude, a length between both ends of the fixing rib is longer than a width of the opening.

3. The adapter according to claim 2, wherein: In any radial direction centered at the shaft portion, a length between both ends of the fixing rib is longer than a width of the opening portion. 4 . An everyday appliance comprising the adapter according to claim 1 and the wiring duct system.

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