Adapter, duct system, and electrical device system

Abstract

To prevent an electrical device from falling off a wiring duct.SOLUTION: An adapter 1 electrically and mechanically connects an electrical device 3 to a wiring duct via the adapter 1. The adapter 1 includes: a pair of first contact parts; a holding part 15, a pair of second contact parts; and a rotary fastener 18. The pair of first contact parts respectively contact the pair of conductors of the wiring duct. The holding part 15 holds the electrical device 3 when the electrical device 3 is relatively rotated. The pair of second contact parts are electrically connected to the pair of first contact parts, respectively. The pair of second contact parts respectively contact the pair of conductive parts of the electrical device 3 in a state where the electrical device 3 is held by the holding part 15. The rotary fastener 18 suppresses the rotation of the electrical device 3 with respect to the holding part 15 by facing or contacting a defining surface 330 of the electrical device 3 in a state where the electrical device 3 is held by the holding part 15.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present disclosure relates to an adapter, a duct system, and an electrical equipment system, and more particularly to an adapter for electrically and mechanically connecting an electrical device to a wiring duct, a duct system including the adapter, and an electrical equipment system. [Background technology]

[0002] Patent Document 1 discloses a suspension device. The suspension device includes a subduct rail attached to an existing fixed member, a connector for attaching the subduct rail to the fixed member, a hanger for suspending a display device from the subduct rail, and a converter for converting power from a power source into power suitable for the display device. The subduct rail is attached to the fixed member by being supported by the connector attached to the fixed member. The hanger is slidably attached to the subduct rail. The converter is electrically connected to a power source attached to the fixed member. A conductor attached to the subduct rail is electrically connected to the converter. The hanger is electrically connected to the conductor of the subduct rail. Power is supplied to the display device through the hanger. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2020 / 4676 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, in an adapter such as a suspension device, it is desirable that the electrical equipment be even less likely to fall off from the wiring duct when the electrical equipment is connected to the wiring duct via the adapter.

[0005] An object of the present disclosure is to prevent electrical equipment from falling off a wiring duct. [Means for solving the problem]

[0006] An adapter according to one aspect of the present disclosure is interposed between a wiring duct and an electric device and electrically connects the electric device to the wiring duct. The adapter includes a pair of first contact portions, a holding portion, a pair of second contact portions, and a rotary fastener. The pair of first contact portions respectively contact a pair of conductors of the wiring duct. The holding portion holds the electric device by rotating the electric device relative to the holding portion. The pair of second contact portions are electrically connected to the pair of first contact portions, respectively. The pair of second contact portions respectively contact a pair of conductive portions of the electric device when the electric device is held in the holding portion. The rotary fastener faces or contacts a defined surface of the electric device when the electric device is held in the holding portion, thereby preventing the electric device from rotating relative to the holding portion.

[0007] A duct system according to one aspect of the present disclosure includes the adapter and the wiring duct.

[0008] An electrical equipment system according to one aspect of the present disclosure includes the duct system and the electrical equipment. [Effects of the Invention]

[0009] According to the present disclosure, there is an advantage in that it is possible to prevent an electrical device from falling off from a wiring duct. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view of an electrical equipment system according to one embodiment of the present disclosure. [Figure 2] FIG. 2 is a perspective view of an adapter and a main part of an electrical device included in the electrical system. [Figure 3] FIG. 3 is an exploded perspective view of the adapter. [Figure 4] FIG. 4 is an exploded perspective view of the adapter with the rotary fastener removed. [Figure 5] FIG. 5 is a top view of the main part of the adapter. [Figure 6] FIG. 6 is a cross-sectional view of the electrical equipment system. [Figure 7] FIG. 7 is a cross-sectional view of the adapter and the main part of the electrical device in a state where the rotation fastener is in a restricted position. [Figure 8] FIG. 8 is a cross-sectional view of the adapter with the rotary fastener in the released position. DETAILED DESCRIPTION OF THE INVENTION

[0011] An adapter, a duct system, and an electrical equipment system according to an embodiment of the present disclosure will be described below with reference to the accompanying drawings. However, the embodiment described below is merely one of various embodiments of the present disclosure. The embodiment described below can be modified in various ways depending on the design, etc., as long as the object of the present disclosure can be achieved. Furthermore, each diagram described in the embodiment described below is a schematic diagram, and the ratios of the sizes and thicknesses of the components in the diagram do not necessarily reflect the actual dimensional ratios.

[0012] (1) Implementation form (1.1) Overview As shown in Figures 1 to 8, the adapter 1 of this embodiment is configured to be interposed between the wiring duct 2 and the electrical device 3 when connecting the electrical device 3 to the wiring duct 2, and to electrically and mechanically connect the electrical device 3 to the wiring duct 2 via the adapter 1.

[0013] The wiring duct 2 supplies power to the electrical device 3 via the adapter 1. The wiring duct 2 is installed, for example, on the ceiling of a facility. The electrical device 3 is a device that consumes the power supplied from the wiring duct 2.

[0014] As shown in FIGS. 6 to 8 , the adapter 1 includes a pair of first contact portions 166, a holding portion 15, a pair of second contact portions 167, and a rotating fastener 18. The pair of first contact portions 166 respectively contact a pair of conductors (second conductors 22) of the wiring duct 2. The holding portion 15 holds the electric device 3 by rotating the electric device 3 relative to the holding portion 15. The pair of second contact portions 167 are electrically connected to the pair of first contact portions 166 respectively. The pair of second contact portions 167 respectively contact a pair of conductive pieces 34 of the electric device 3 when the electric device 3 is held by the holding portion 15. The electric device 3 has a defining surface 330. The rotating fastener 18 faces or comes into contact with the defining surface 330 of the electric device 3 when the electric device 3 is held by the holding portion 15, thereby preventing the electric device 3 from rotating relative to the holding portion 15.

[0015] According to the adapter 1 of this embodiment, when the electric device 3 is held by the holding part 15, the rotary fastener 18 faces or comes into contact with the defined surface 330 of the electric device 3. Therefore, even if the electric device 3 tries to rotate relative to the holding part 15 in this state due to vibrations caused by an earthquake, for example, the rotary fastener 18 comes into contact with the defined surface 330 of the electric device 3, thereby suppressing the rotation of the electric device 3. This prevents the electric device 3 from unintentionally falling off the adapter 1.

[0016] (1.2) Details An electric equipment system 200 of this embodiment will be described below with reference to FIGS.

[0017] 1, the electrical equipment system 200 includes a duct system 100 and an electrical equipment 3. The duct system 100 includes an adapter 1 and a wiring duct 2.

[0018] For convenience, the following description will be given by defining three axes (X-axis, Y-axis, and Z-axis) of a right-handed three-dimensional Cartesian coordinate system for an electrical equipment system 200 in a state in which an electrical equipment 3 is attached to a wiring duct 2 via an adapter 1 as shown in FIG. 1 . Specifically, the direction in which the adapter 1 and the wiring duct 2 are aligned is defined as the Z-axis direction. The longitudinal direction of the wiring duct 2, which is perpendicular to the Z-axis direction, is defined as the X-axis direction. The direction perpendicular to both the X-axis direction and the Z-axis direction is defined as the Y-axis direction. For convenience, the Z-axis direction is defined as the up-down direction, and the side on which the wiring duct 2 is located relative to the adapter 1 (the positive direction of the Z-axis) is defined as "up," and the opposite side is defined as "down." The X-axis direction is defined as the front-rear direction, and the positive direction of the X-axis (the side on which the operating unit 14 is located relative to the housing 11 of the adapter 1) is defined as "front," and the opposite side is defined as "rear." The Y-axis direction is defined as the left-right direction, and the positive direction of the Y-axis is defined as "left," and the opposite side is defined as "right." However, the definitions of axes and directions in this disclosure merely indicate the relative positional relationships between the components of the electric equipment system 200, and do not limit the orientation of the electric equipment system 200 when in use, etc.

[0019] (1.2.1) Wiring duct The wiring duct 2 is used to supply power to electrical equipment 3 in a facility. The wiring duct 2 receives power from a power source. The power source from which the wiring duct 2 receives power is, for example, a commercial power source. The wiring duct 2 receives DC power that is obtained by converting AC power supplied from the commercial power source by a converter circuit installed in the facility, and supplies the received DC power to the electrical equipment 3. Note that the "facility" referred to in this disclosure may be a residential or non-residential facility. Examples of residential facilities may include detached houses and apartment buildings, etc. Examples of non-residential facilities may include office buildings, commercial facilities, accommodation facilities, complexes, warehouses, factories, etc.

[0020] 1 and 6, the wiring duct 2 includes a pair of first conductors 21, a pair of second conductors 22, and a main body 23. That is, the wiring duct 2 includes a plurality of power supply lines (first power supply lines configured with a pair of first conductors, and second power supply lines configured with a pair of second conductors 22).

[0021] As shown in FIG. 6 , the main body 23 has a first side wall 231, a second side wall 232, an upper wall 233, and a lower wall 234. The first side wall 231 is a left wall, and the second side wall 232 is a right wall. The first side wall 231 and the second side wall 232 face each other in the left-right direction. The upper wall 233 and the lower wall 234 face each other in the up-down direction. The upper wall 233 connects the upper end of the first side wall 231 and the upper end of the second side wall 232. The main body 23 has a U-shaped cross section formed by the first side wall 231, the second side wall 232, and the upper wall 233.

[0022] The lower wall portion 234 is connected to the lower end of the first side wall portion 231 and the lower end of the second side wall portion 232. As shown in Fig. 6, the lower wall portion 234 is provided with an opening portion 235 extending in the front-rear direction. The adapter 1 can be attached to any position of the opening portion 235 in the front-rear direction.

[0023] A first protrusion 236 is provided on the inner surface (right surface) of the first side wall 231. A first protrusion 237 is provided on the inner surface (left surface) of the second side wall 232. The first protrusion 236 of the first side wall 231 and the first protrusion 237 of the second side wall 232 face each other in the left-right direction. A pair of first conductors 21 of the first power supply line are provided at the respective tips of the first protrusion 236 of the first side wall 231 and the first protrusion 237 of the second side wall 232.

[0024] A second protrusion 238 is provided on the inner surface (right surface) of the first side wall 231 at a position below the first protrusion 236. A second protrusion 239 is provided on the inner surface (left surface) of the second side wall 232 at a position below the first protrusion 237. The second protrusion 238 of the first side wall 231 and the second protrusion 239 of the second side wall 232 face each other in the left-right direction. A pair of second conductors 22 of the second power line are provided at the respective tips of the second protrusion 238 of the first side wall 231 and the second protrusion 239 of the second side wall 232.

[0025] DC power is supplied from the first power supply path to the pair of first conductors 21 of the first power supply line. When an external device is connected to the first power supply line, DC power is supplied from the first power supply path to the external device via the first power supply line.

[0026] DC power is supplied from the second power supply path to the pair of second conductors 22 of the second power supply line. With an external device connected to the second power supply line, DC power is supplied from the second power supply path to the external device via the second power supply line. The first power supply path and the second power supply path are, for example, two power supply paths branched from a commercial power supply.

[0027] (1.2.2) Electrical Equipment The electrical device 3 is a device that consumes the power supplied from the wiring duct 2. The electrical device 3 may be, for example, a lighting device, a display, an imaging device, or an air conditioning device. In this embodiment, a case where the electrical device 3 is a lighting device will be described as an example.

[0028] As shown in FIGS. 1 and 2, the electric device 3 includes a main body 31, a connection portion 32, an attachment portion 33, a pair of conductive pieces 34, and an operation portion 35.

[0029] The main body 31 has a power consumption unit 311 that consumes power. The power consumption unit 311 includes a light source such as a light-emitting diode. The light source emits light upon receiving a supply of DC power from the wiring duct 2 via the adapter 1. As shown in FIG. 1 , the main body 31 is cylindrical and emits light from, for example, the bottom surface.

[0030] The mounting portion 33 is a portion for mounting the electric device 3 to the adapter 1 or the wiring duct 2.

[0031] As shown in FIGS. 1 and 2, the attachment portion 33 includes a support portion 331 and an insertion portion 333.

[0032] The support part 331 is cylindrical in shape and has a vertically long operation groove 332 formed on the front surface of the support part 331.

[0033] The insertion portion 333 is a portion that is inserted into an insertion hole 111 (described later) of the adapter 1 when attaching the electric device 3 to the adapter 1. The insertion portion 333 protrudes upward from the upper surface of the support portion 331.

[0034] The insertion portion 333 has a base portion 334 and a pair of mounting pieces 335. The insertion portion 333 is formed by the base portion 334 and the pair of mounting pieces 335 into a generally rectangular shape that is long in the left-right direction when viewed from above.

[0035] The base 334 has a rectangular prism shape that protrudes upward from the upper surface of the support portion 331. The pair of mounting pieces 335 protrude in opposite directions from the left and right side surfaces of the base 334. Each of the pair of mounting pieces 335 has a substantially rectangular parallelepiped shape.

[0036] 2, the pair of conductive pieces 34 protrude in opposite directions from the upper surface of the base 334 along the left-right direction. That is, the pair of conductive pieces 34 are aligned in one direction (the alignment direction). The protruding direction (left-right direction) of the pair of conductive pieces 34 is the same as the protruding direction of the pair of mounting pieces 335.

[0037] 2, the dimension (width) in the front-rear direction of the mounting piece 335 is the same as the dimension in the front-rear direction of the base 334. The front surface of the base 334 and the front surfaces of the pair of mounting pieces 335 are flush with each other, constituting a single plane (defined surface 330) of the insertion portion 333. The rear surface of the base 334 and the rear surfaces of the pair of mounting pieces 335 are flush with each other, constituting a single plane (defined surface 330) of the insertion portion 333. In short, the defined surface 330 of the insertion portion 333 of the electrical device 3 is a plane along the direction in which the pair of conductive pieces 34 are arranged.

[0038] As shown in FIG. 1 , the connecting portion 32 is cylindrical. The diameter of the connecting portion 32 is smaller than the diameter of the support portion 331 of the mounting portion 33. The connecting portion 32 connects the main body portion 31 and the mounting portion 33. The upper end of the connecting portion 32 is connected to the mounting portion 33, and the lower end of the connecting portion 32 is connected to the main body portion 31. The lower end of the connecting portion 32 is a rotary joint, and the main body portion 31 is connected to the connecting portion 32 so as to be rotatable.

[0039] The pair of conductive pieces 34 are electrically connected to the power consumption section 311 of the main body section 31 via a pair of conductors inside the connection section 32 .

[0040] The operation unit 35 is a part that is operated by the user when attaching or detaching the electrical device 3 to or from the adapter 1. As shown in FIGS. 1 and 2 , the operation unit 35 is disposed in an operation groove 332 of the mounting portion 33. The operation unit 35 is movable along the longitudinal direction (up-down direction) of the operation groove 332 in response to an operation by the user. The operation unit 35 is movable between a first position (upper end position) where an upper end 351 of the operation unit 35 protrudes from the upper end of the support portion 331, and a second position (lower end position) where the upper end 351 of the operation unit 35 is accommodated within the operation groove 332.

[0041] When the operating unit 35 is located in the first position while the electric device 3 is attached to the adapter 1, the upper end of the operating unit 35 is inserted into (the first groove 112 of) a bottom groove 110 (described later) of the adapter 1, and therefore the user cannot rotate the electric device 3 around the axis of the support part 331. On the other hand, when the operating unit 35 is located in the second position, the upper end of the operating unit 35 is out of the bottom groove 110 of the adapter 1, and therefore the user can rotate the electric device 3 around the axis of the support part 331.

[0042] (1.2.3) Adapters The adapter 1 electrically and mechanically connects the electrical device 3 to the wiring duct 2 via the adapter 1. Specifically, the electrical device 3 is attached to the adapter 1. The adapter 1 is also attached to the wiring duct 2.

[0043] As shown in Figures 3 to 6, the adapter 1 includes a housing 11, a lid portion 12, an insertion portion 13, an operating portion 14, a holding portion 15, a pair of conductive portions 16, a cover portion 17, and a rotating fastener 18.

[0044] 3, the housing 11 is a rectangular box having an opening 119 on the top surface. As shown in FIG. 6, the housing 11 accommodates a portion of the conductive portion 16 including the second contact portion 167, the holding portion 15, and the cover portion 17.

[0045] 2 and 3, an operation groove 118 that is long in the vertical direction is provided on the front surface of the housing 11. The operation groove 118 extends from the upper end of the housing 11. The lower end of the operation groove 118 does not reach the lower end of the housing 11.

[0046] As shown in FIG. 4 , a bottom groove 110 recessed upward is provided on the underside of the housing 11 so as to extend in the front-rear direction. The bottom groove 110 is provided over the entire length of the underside of the housing 11 in the front-rear direction. An insertion hole 111 penetrating the underside of the housing 11 is formed in the center of the bottom groove 110 on the underside of the housing 11. The insertion hole 111 is elongated in the front-rear direction. Specifically, the width (left-right dimension) of the insertion hole 111 is slightly larger than the left-right dimension of the insertion portion 333 of the electric device 3 and smaller than the front-rear dimension of the insertion portion 333 of the electric device 3 (the distance between both ends of the pair of mounting pieces 335). The length (front-rear dimension) of the insertion hole 111 is larger than the front-rear dimension of the insertion portion 333 of the electric device 3 (the distance between both ends of the pair of mounting pieces 335). The bottom groove 110 includes a first groove 112 located in front of the insertion hole 111 and a second groove 113 located behind the insertion hole 111 .

[0047] A pair of protrusions protruding in directions facing each other in the left-right direction are provided at the lower ends of both side surfaces of second groove 113 along the longitudinal direction (front-rear direction) of second groove 113. A slide groove 114 is formed by the bottom surface of second groove 113, the side surface of second groove 113, and the protrusions. Housing 11 has a pair of slide grooves 114 on the left and right.

[0048] A rectangular recess 115 is provided in the center of the bottom surface of second groove 113. In addition, an inclined surface 116 is provided at the rear end of the bottom surface of second groove 113 so as to cut out the rear end of the bottom surface of second groove 113.

[0049] 2 and 3, the cover 12 is attached to the housing 11 so as to cover the opening 119 of the housing 11. The cover 12 is in the shape of a rectangular plate.

[0050] As shown in FIG. 6, the insertion portion 13 is a portion that is inserted into the opening 235 of the main body portion 23 of the wiring duct 2 when the adapter 1 is attached to the wiring duct 2.

[0051] 2 and 3, the insertion portion 13 protrudes upward from the upper surface of the lid portion 12. The insertion portion 13 has a base portion 131, a pair of mounting pieces 132, and a pair of restricting portions 133.

[0052] The base 131 is a hollow cylinder with a bottom that protrudes upward from the top surface of the lid 12. First contact portions 166 of the pair of conductive portions 16 protrude from both the left and right side surfaces of the base 131.

[0053] The pair of mounting pieces 132 protrude in opposite directions from the left and right side surfaces of the base 131. Each of the pair of mounting pieces 132 has a substantially rectangular parallelepiped shape.

[0054] 6 , when the adapter 1 is attached to the wiring duct 2, each of the pair of mounting pieces 132 is supported by the main body 23 of the wiring duct 2. More specifically, the pair of mounting pieces 132 is placed on the upper surface of the lower wall portion 234 of the wiring duct 2. In this way, the adapter 1 is supported by the wiring duct 2.

[0055] The distance between the mounting piece 132 and the first contact portion 166 in the up-down direction is greater than the distance between the mounting piece 335 and the conductive piece 34 of the electric device 3. More specifically, the distance between the mounting piece 335 and the conductive piece 34 of the electric device 3 is set so that, when the mounting piece 335 is placed on the lower wall portion 234 of the wiring duct 2, the conductive piece 34 comes into contact with the second conductor 22 of the wiring duct 2. On the other hand, the distance between the mounting piece 132 and the first contact portion 166 of the adapter 1 is set so that, when the mounting piece 132 is placed on the lower wall portion 234 of the wiring duct 2, the first contact portion 166 comes into contact with the first conductor 21 of the wiring duct 2.

[0056] In other words, by using the adapter 1, it is possible to connect an electrical device 3 designed to be connected to the second power line (second conductor 22) of the wiring duct 2 to the first power line (first conductor 21) of the wiring duct 2.

[0057] 2, the pair of restricting portions 133 protrude in opposite directions from the left and right side surfaces of the base portion 131. The restricting portions 133 are located on the side surfaces of the base portion 131 between the mounting piece 132 and the first contact portion 166.

[0058] Because the insertion portion 13 has a pair of restricting portions 133, the adapter 1 can be attached to the wiring duct 2 in a manner that the first contact portion 166 contacts the first power line (first conductor 21) of the wiring duct 2 (see Figure 6), but cannot be attached to the wiring duct 2 in a manner that the first contact portion 166 contacts the second power line (second conductor 22) of the wiring duct 2.

[0059] 2, 3, 7, and 8, the lid portion 12 and the insertion portion 13 are here constituted by a first lid member 121 and a second lid member 122. The first lid member 121 constitutes the front half of the lid portion 12 and the insertion portion 13. The second lid member 122 constitutes the rear half of the lid portion 12 and the insertion portion 13.

[0060] First cover member 121 and second cover member 122 are joined to each other by a total of three screws 191 at a pair of restricting portions 133 of insertion portion 13 and at a lower end portion located inside housing 11. First cover member 121 is fixed to housing 11 by two screws 192, and second cover member 122 is fixed to housing 11 by two screws 192.

[0061] The operating unit 14 is a part that is operated by the user when attaching or detaching the adapter 1 to or from the wiring duct 2. As shown in Figures 2 and 3, the operating unit 14 has a protrusion 141 that protrudes upward at its upper end. The protrusion 141 has a triangular shape, more specifically, a right-angled triangular plate shape, when viewed from the front.

[0062] The operation unit 14 is disposed in an operation groove 118 of the housing 11. The operation unit 14 is movable along the longitudinal direction (up-down direction) of the operation groove 118 in response to an operation by the user. The operation unit 14 is movable between a first position (upper end position; see FIGS. 2 and 3) where the protrusion 141 protrudes from the upper end of the housing 11, and a second position (lower end position) where the protrusion 141 is accommodated within the operation groove 118. The operation unit 14 is biased upward (towards the first position) by an elastic member 140 such as a coil spring (see FIGS. 7 and 8).

[0063] When the adapter 1 is attached to the wiring duct 2 and the operating unit 14 is biased by the elastic member 140 to be located at the first position, the protrusion 141 is inserted into the opening 235 of the wiring duct 2, and therefore the user cannot rotate the adapter 1 around the axis of the base 131 of the insertion unit 13. On the other hand, when the operating unit 14 is pressed down against the elastic restoring force of the elastic member 140 to be located at the second position, the protrusion 141 is disengaged from the opening 235 of the wiring duct 2, and therefore the user can rotate the electrical device 3 around the axis of the base 131.

[0064] The holding unit 15 holds the electric device 3. As shown in Fig. 3 and Fig. 5 , the holding unit 15 has a support member 151 that supports the weight of the electric device 3. The pair of mounting pieces 335 of the electric device 3 are placed on the support member 151, whereby the holding unit 15 holds the electric device 3.

[0065] As shown in Figure 5, the support member 151 is formed into a rectangular frame shape that is long in the front-to-rear direction when viewed from above, and is made up of a pair of support pieces 152, each of which is a U-shaped plate with a flange, and a pair of connecting pieces 156 that connect the front ends and rear ends of the pair of support pieces 152.

[0066] The support piece 152 has a plate-like bottom piece 153 that is long in the front-to-rear direction, a pair of vertical pieces 154 that extend diagonally upward from the front and rear ends of the bottom piece 153 so as to move away from the bottom piece 153, and a pair of upper pieces 155 that extend front-to-rear from the upper ends of the pair of vertical pieces 154 so as to move away from the bottom piece 153. One (front) of the pair of connecting pieces 156 connects the front ends of the front upper pieces 155 of the pair of support pieces 152 to the left and right, and the other (rear) of the pair of connecting pieces 156 connects the rear ends of the rear upper pieces 155 of the pair of support pieces 152 to the left and right.

[0067] In the left support piece 152, a notch 159 is formed at the lower end of the front vertical piece 154. In addition, in the right support piece 152, a notch 159 is formed at the lower end of the rear vertical piece 154. Therefore, when the insertion portion 333 of the electric device 3 including the pair of mounting pieces 335 is passed through the opening of the support member 151 from below and then the electric device 3 is rotated counterclockwise around the axis of the base 334 in a top view (see FIG. 5), the pair of mounting pieces 335 each pass through the notch 159, and the electric device 3 can be rotated 90° (the state shown in FIG. 5). On the other hand, there is no notch at the lower end of the rear vertical piece 154 in the left support piece 152, and there is no notch at the lower end of the front vertical piece 154 in the right support piece 152. Therefore, when the electric device 3 is rotated by 90 degrees or more, the pair of mounting pieces 335 come into contact with the rear vertical piece 154 of the left support piece 152 and the front vertical piece 154 of the right support piece 152, respectively. This prevents the electric device 3 from being rotated any further. This allows the pair of mounting pieces 335 to be reliably supported by the support member 151 (on the bottom pieces 153 of the pair of support pieces 152).

[0068] In this way, the holding portion 15 holds the electric device 3 by rotating the electric device 3 relative to the holding portion 15. More specifically, the holding portion 15 holds the electric device 3 by inserting a part of the electric device 3 (the insertion portion 333) into the insertion hole 111 of the housing 11 and then rotating the electric device 3 relative to the holding portion 15.

[0069] Support walls 157 for supporting the cover portion 17 are provided on the inner sides of the pair of connecting pieces 156 in the front-rear direction.

[0070] The support member 151 is fixed to the housing 11 by screws 193 passing through through holes provided in the pair of connecting pieces 156, respectively.

[0071] The pair of conductive parts 16 are parts that electrically connect the electrical equipment 3 and the wiring duct 2 via the pair of conductive parts 16 when the electrical equipment 3 is connected to the adapter 1 and the adapter 1 is connected to the wiring duct 2.

[0072] As shown in FIG. 6, each of the pair of conductive parts 16 includes a first conductive member 161, a second conductive member 162, and a connecting member 163.

[0073] The first conductive member 161 has a C-shaped plate shape when viewed from the front, and includes an upper piece, a vertical piece, and a lower piece. The vertical piece is a plate that is long in the up-down direction. The upper piece and the lower piece protrude in the left-right direction from the upper end and the lower end of the vertical piece, respectively.

[0074] The pair of first conductive members 161 are arranged so that their vertical pieces are located inside the base 131 of the insertion section 13. Inside the base 131, spacer members 134 made of an insulating material such as resin are arranged between the vertical pieces of the pair of first conductive members 161. The pair of first conductive members 161 are biased outward in the left-right direction by the spacer members 134.

[0075] The upper pieces of the pair of first conductive members 161 protrude from the left and right side surfaces of the base 131. The upper pieces of the first conductive members 161 function as first contact portions 166 that come into contact with the pair of first conductors 21 of the wiring duct 2 when the adapter 1 is attached to the wiring duct 2.

[0076] The second conductive member 162 has an L-shaped plate shape when viewed from the front, and includes an upper piece and a vertical piece. The vertical piece is a plate that is long in the up-down direction. The upper piece protrudes in the left-right direction from the upper end of the vertical piece.

[0077] A part of the inner surface of the second conductive member 162 comes into contact with the conductive piece 34 of the electric device 3 when the electric device 3 is attached to the adapter 1. That is, the inner surface of the vertical piece of the second conductive member 162 functions as a second contact portion 167 that comes into contact with the conductive piece 34 of the electric device 3 when the electric device 3 is held by the holding portion 15.

[0078] The connecting member 163 connects the first conductive member 161 and the second conductive member 162. The connecting member 163 is, for example, a rivet. The connecting member 163 connects the lower piece of the first conductive member 161 and the upper piece of the second conductive member 162.

[0079] As shown in FIGS. 3 and 6, the cover portion 17 has an outer wall portion 171 and an inner wall portion 172.

[0080] The outer wall portion 171 has a rectangular frame shape when viewed from above. As shown in Fig. 6, left and right side walls of the outer wall portion 171 respectively cover the outer surfaces of the vertical pieces of the pair of second conductive members 162. Furthermore, support pieces that support the lower end surfaces of the vertical pieces of the second conductive members 162 are provided at the lower ends of the left and right side walls of the outer wall portion 171 so as to protrude in the left-right direction.

[0081] As shown in Fig. 3, the inner wall portion 172 has a rectangular box shape. As shown in Fig. 6, the inner wall portion 172 is disposed inside the outer wall portion 171. The left and right side surfaces of the inner wall portion 172 each cover a portion of the inner surface of the vertical pieces of the pair of second conductive members 162. However, the inner surfaces of the vertical pieces of the pair of second conductive members 162 are not entirely covered by the inner wall portion 172, and some are exposed. The exposed portions of the vertical pieces of the second conductive members 162 function as second contact portions 167.

[0082] The rotary fastener 18 is held by the housing 11. As shown in Figures 3 and 4, the rotary fastener 18 integrally includes a main portion 181, a plate-shaped portion 183, a protruding wall portion 185, and an arch portion 186.

[0083] The main portion 181 is U-shaped in top view, open to the rear, and has a plate shape that is long in the front-to-rear direction. On both the left and right side surfaces of the main portion 181, slide portions 182 that are smaller in vertical dimension (thickness) than the main portion 181 are provided along the front-to-rear direction.

[0084] The rotating fastener 18 is held in the housing 11 by fitting a pair of slide portions 182 on both the left and right sides of the main portion 181 into a pair of slide grooves 114 on the underside of the housing 11. The rotating fastener 18 is movable relative to the housing 11 along the longitudinal direction of the slide grooves 114. In other words, the rotating fastener 18 is movable relative to the housing 11 along the predetermined direction A1 (the longitudinal direction of the slide grooves 114). The longitudinal direction of the slide grooves 114 coincides with the longitudinal direction of the insertion hole 111, so it can be said that the rotating fastener 18 is movable along the longitudinal direction of the insertion hole 111.

[0085] Since the pair of slide portions 182 are fitted into the pair of slide grooves 114 of the housing 11, vertical displacement (fluttering) of the rotary fastener 18 relative to the housing 11 can be suppressed.

[0086] The plate-shaped portion 183 is disposed within the open space of the U-shaped main portion 181. The plate-shaped portion 183 is a plate that protrudes rearward from the inner bottom wall of the main portion 181. The main portion 181 and the plate-shaped portion 183 form an E shape when viewed from above. The plate-shaped portion 183 is elastically deformable in the up-down direction relative to the main portion 181, with the connection portion with the main portion 181 as a fulcrum. In other words, the plate-shaped portion 183 is elastically deformable in a specific direction A2 (downward) that intersects with the above-mentioned predetermined direction A1 (here, the front-rear direction).

[0087] A protrusion 184 that protrudes upward is provided near the rear end of plate-shaped portion 183. The upper end of protrusion 184 protrudes above the upper surface of main portion 181 when plate-shaped portion 183 is not elastically deformed (see FIGS. 3, 7, and 8). On the other hand, when plate-shaped portion 183 is elastically deformed downward, the upper end of protrusion 184 can be positioned below the upper surface of main portion 181.

[0088] The protruding wall portion 185 is disposed on the front surface of the main portion 181. The protruding wall portion 185 is wall-shaped with its thickness direction along the front-rear direction. The front surface of the protruding wall portion 185 is flat. However, the upper and lower ends of the front surface of the protruding wall portion 185 are chamfered.

[0089] The arch portion 186 is provided at the rear end of the lower surface of the main portion 181. The arch portion 186 has a U-shape that protrudes downward. The arch portion 186 connects the rear ends of the U-shaped main portions 181 together. The arch portion 186 is provided so as to straddle the plate-shaped portion 183 in the width direction (left-right direction) of the plate-shaped portion 183. If an attempt is made to elastically deform the plate-shaped portion 183 excessively downward, the deformed plate-shaped portion 183 comes into contact with the arch portion 186. This prevents further deformation of the plate-shaped portion 183. In other words, the arch portion 186 functions as a deformation prevention portion 187 that restricts excessive elastic deformation of the plate-shaped portion 183 downward (specific direction A2). The adapter 1 including the deformation prevention portion 187 can prevent damage to the plate-shaped portion 183.

[0090] As described above, the rotary fastener 18 is held by the housing 11 so as to be slidable along the longitudinal direction of the pair of slide grooves 114 (in the front-to-rear direction). The rotary fastener 18 is movable along the predetermined direction A1 between a restricted position (see FIG. 8) close to the holding portion 15 and a released position (see FIG. 7) away from the holding portion 15. The protruding wall portion 185 of the rotary fastener 18 is located within the insertion hole 111 of the housing 11. In other words, the rotary fastener 18 is disposed so as to block a portion of the insertion hole 111.

[0091] The front-rear dimension of the insertion hole 111 when the rotary fastener 18 is in the release position (see FIG. 7) is larger than the front-rear dimension of the insertion hole 111 when the rotary fastener 18 is in the restricted position (see FIG. 8). Specifically, the front-rear dimension of the insertion hole 111 when the rotary fastener 18 is in the release position is larger than the distance between both ends of the pair of mounting pieces 335. As a result, when the rotary fastener 18 is in the release position, the insertion portion 333 of the electric device 3 can be inserted into the insertion hole 111 from below. Thereafter, by rotating the electric device 3 around the axis of the base portion 334 as described above, the electric device 3 can be supported by the adapter 1.

[0092] On the other hand, when the rotary fastener 18 is located in the restricted position (see FIG. 8 ), the dimension of the insertion hole 111 in the front-to-rear direction is smaller than the distance between both ends of the pair of mounting pieces 335 of the electric device 3. In particular, when the adapter 1 supports the electric device 3 and the rotary fastener 18 is located in the restricted position (see FIG. 8 ), the front surface of the protruding wall portion 185 of the rotary fastener 18 is closely opposed to (preferably in contact with) the defined surface 330 of the electric device 3 (see FIG. 8 ). As a result, even if the electric device 3 attempts to rotate relative to the adapter 1 due to vibrations caused by an earthquake, for example, while the adapter 1 is holding the electric device 3, the protruding wall portion 185 comes into contact with the defined surface 330, thereby suppressing the rotation of the electric device 3. In this way, the rotary fastener 18 of the adapter 1 of this embodiment suppresses the rotation of the electric device 3 relative to the holding portion 15 by opposing or contacting the defined surface 330 of the electric device 3 when the electric device 3 is held in the holding portion 15.

[0093] From the viewpoint of suppressing rotation of the electric device 3 relative to the holding part 15, it is preferable that the defining surface 330 and the front surface of the protruding wall part 185 are each flat. For example, compared to when the defining surface 330 and the front surface of the protruding wall part 185 are each a convex curved surface, rotation of the electric device 3 can be further suppressed.

[0094] As shown in FIG. 7, the adapter 1 is provided with a restriction mechanism (hereinafter also referred to as a "first restriction mechanism") 91 that restricts movement of the rotary fastener 18 when it is in the release position.

[0095] The first restriction mechanism 91 includes a fall prevention mechanism 911 that prevents the rotation fastener 18 from falling off the housing 11.

[0096] In the adapter 1 of this embodiment, the fall-off prevention mechanism 911 includes the protruding wall portion 185 of the rotary fastener 18. That is, even if the rotary fastener 18 attempts to move rearward when the rotary fastener 18 is in the released position, the rear surface of the protruding wall portion 185 serving as the fall-off prevention mechanism 911 comes into contact with the periphery of the insertion hole 111 of the housing 11, thereby preventing the rotary fastener 18 from moving further. This prevents the rotary fastener 18 from falling off. In short, the fall-off prevention mechanism 911 includes the protruding wall portion 185 of the rotary fastener 18. The protruding wall portion 185 comes into contact with the periphery of the insertion hole 111 in the housing 11, thereby preventing the rotary fastener 18 from falling off from the housing 11.

[0097] The first restriction mechanism 91 includes a movement restriction mechanism 912 that restricts movement of the rotary fastener 18 in a direction (forward) toward the restriction position.

[0098] In the adapter 1 of this embodiment, the movement restricting mechanism 912 includes the protrusion 184 of the rotary fastener 18 and the inclined surface 116 of the housing 11. That is, even if the rotary fastener 18 attempts to move forward when the rotary fastener 18 is in the release position, the front surface of the protrusion 184 of the movement restricting mechanism 912 comes into contact with the inclined surface 116 of the movement restricting mechanism 912, thereby preventing further movement of the rotary fastener 18. This restricts movement of the rotary fastener 18 toward the restricted position. In short, the movement restricting mechanism 912 includes the protrusion 184 provided on the rotary fastener 18. The protrusion 184 comes into contact with the housing 11 when the rotary fastener 18 moves toward the restricted position. Furthermore, the inclined surface 116 is formed on the portion of the housing 11 with which the protrusion 184 comes into contact, thereby suppressing damage to the protrusion 184.

[0099] As shown in FIG. 8, the adapter 1 is provided with a restriction mechanism (hereinafter also referred to as a "second restriction mechanism") 92 that restricts movement of the rotary fastener 18 when it is in the restricted position.

[0100] In the adapter 1 of this embodiment, the second restriction mechanism 92 includes a protrusion 184 provided on the plate-shaped portion 183 of the rotary fastener 18, and a recess 115 provided on the housing 11, into which the protrusion 184 fits when the rotary fastener 18 is in the restricted position. That is, as shown in Fig. 8, when the rotary fastener 18 is in the restricted position, the protrusion 184 fits into the recess 115. As a result, even if the rotary fastener 18 attempts to move forward or backward, the protrusion 184 comes into contact with the inner surface of the recess 115, thereby restricting the movement of the rotary fastener 18.

[0101] In this way, the movement of the rotary fastener 18 from the restricted position is restricted, and thus the protruding wall portion 185 is prevented from moving away from the defined surface 330 of the electric device 3 while the adapter 1 is holding the electric device 3. This makes it even more difficult for the electric device 3 to fall off.

[0102] When moving the rotary fastener 18 from the restricted position to the released position, or from the released position to the restricted position, the user simply elastically deforms the plate-shaped portion 183 downward until the protrusion 184 is positioned below the bottom surface of the second groove 113. At this time, as described above, the arch portion 186 (deformation prevention portion 187) prevents excessive deformation of the plate-shaped portion 183.

[0103] (2) Variations The above embodiment is merely one of various embodiments of the present disclosure. Modifications of the embodiment are listed below. The above embodiment and the modifications described below can be applied in appropriate combinations.

[0104] In one modified example, the wiring duct 2 may include three or more sets of power lines as the plurality of power lines.

[0105] In one modification, the power source from which the wiring duct 2 receives power may output DC power instead of AC power. In this case, the converter circuit is omitted. Furthermore, the power source from which the wiring duct 2 receives power is not limited to a commercial power source and may be, for example, a private power generation facility or a storage battery.

[0106] In one modification, the moving direction of the rotary fastener 18 is not limited to the longitudinal direction of the insertion hole 111, but may be, for example, a direction along the insertion direction (vertical direction) of the insertion portion 333 of the electric device 3, or the like.

[0107] In one variation, the rotary fastener 18 may be configured to move from the release position to the restricting position without user manipulation. For example, the rotary fastener 18 may be biased from the release position to the restricting position by an elastic member such as a spring.

[0108] In one variant, the rotation stopper 18 may not be movable relative to the holding part 15, and may be made of, for example, a deformable elastic body.

[0109] In one modified example, the deformation prevention portion 187 (arch portion 186) may be provided on the housing 11.

[0110] In one variant, the recess 115 may be a through hole.

[0111] (3) Mode As is clear from the above-described embodiments and modifications, the present specification discloses the following aspects.

[0112] The adapter (1) of the first embodiment is an adapter (1) interposed between a wiring duct (2) and an electric device (3) for electrically connecting the electric device (3) to the wiring duct (2). The adapter (1) includes a pair of first contact portions (166), a holding portion (15), a pair of second contact portions (167), and a rotating fastener (18). The pair of first contact portions (166) respectively contact a pair of conductors (second conductors 22) of the wiring duct (2). The holding portion (15) holds the electric device (3) by rotating the electric device (3) relative to the holding portion (15). The pair of second contact portions (167) are electrically connected to the pair of first contact portions (166), respectively. The pair of second contact portions (167) respectively contact a pair of conductive portions (34) of the electric device (3) when the electric device (3) is held by the holding portion (15). The rotary fastener (18) faces or comes into contact with a defined surface (330) of the electrical equipment (3) when the electrical equipment (3) is held in the holding portion (15), thereby preventing the electrical equipment (3) from rotating relative to the holding portion (15).

[0113] According to this aspect, rotation of the electric device (3) relative to the adapter (1) is suppressed, and therefore, it is possible to prevent the electric device (3) from falling off from the wiring duct (2).

[0114] In the adapter (1) of the second embodiment, the pair of conductive portions (34) of the electric device (3) in the first embodiment are aligned in one direction, and the defining surface (330) of the electric device (3) is a plane along the direction in which the pair of conductive portions (34) are aligned.

[0115] According to this embodiment, rotation of the electrical device (3) relative to the adapter (1) is further suppressed.

[0116] The adapter (1) of the third aspect is the adapter (1) of the first or second aspect, further comprising a housing (11) that houses the holding portion (15). The rotary fastener (18) is held in the housing (11). The rotary fastener (18) is movable along a predetermined direction (A1) relative to the housing (11) between a restricting position close to the holding portion (15) and a releasing position away from the holding portion (15).

[0117] According to this embodiment, by positioning the rotation fastener (18) in the restricting position, the rotation of the electric device (3) relative to the adapter (1) can be further restricted.

[0118] In the adapter (1) of the fourth aspect, in the third aspect, the housing (11) has an elongated insertion hole (111) into which a portion (insertion portion 333) of the electric device (3) is inserted. The holding portion (15) holds the electric device (3) by inserting the portion of the electric device (3) into the insertion hole (111) and then rotating the electric device (3) relative to the holding portion (15). The predetermined direction (A1) is a direction along the longitudinal direction of the insertion hole (111).

[0119] According to this embodiment, the rotary fastener (18) can be made to face or contact the part (insertion portion 333) of the electrical device (3) after insertion into the insertion hole (111), thereby further suppressing rotation of the electrical device (3) relative to the adapter (1).

[0120] In the adapter (1) of the fifth embodiment, the rotary fastener (18) in the fourth embodiment is arranged so as to close a part of the insertion hole (111).

[0121] According to this embodiment, the rotary fastener (18) can be made to face or contact the part (insertion portion 333) of the electrical device (3) after insertion into the insertion hole (111), thereby further suppressing rotation of the electrical device (3) relative to the adapter (1).

[0122] The adapter (1) of the sixth aspect is the adapter (1) of any one of the third to fifth aspects, further comprising a restriction mechanism (first restriction mechanism 91) that restricts movement of the rotary fastener (18) in the release position.

[0123] According to this embodiment, the rotary fastener (18) can be prevented from unintentionally moving from the release position.

[0124] In the adapter (1) of the seventh aspect, in the sixth aspect, the restriction mechanism (first restriction mechanism 91) includes a fall prevention mechanism (911) that prevents the rotary fastener (18) from falling off from the housing (11).

[0125] According to this embodiment, the rotation fastener (18) can be prevented from falling off.

[0126] In the adapter (1) of the eighth aspect, in the seventh aspect, the housing (11) has an elongated insertion hole (111) into which a part (insertion portion 333) of the electrical device (3) is inserted. The fall-off prevention mechanism (911) includes a protruding wall portion (185) of the rotary fastener (18). The protruding wall portion (185) contacts the periphery of the insertion hole (111) in the housing (11), thereby preventing the rotary fastener (18) from falling off from the housing (11).

[0127] According to this embodiment, the fall-off prevention mechanism (911) can be realized with a simple configuration.

[0128] In the adapter (1) of the ninth aspect, in any one of the sixth to eighth aspects, the restriction mechanism (first restriction mechanism 91) includes a movement restriction mechanism (912) that restricts the movement of the rotating fastener (18) in a direction toward the restriction position.

[0129] According to this embodiment, the rotary fastener (18) can be prevented from unintentionally moving from the release position to the restriction position.

[0130] In the adapter (1) of the tenth aspect, in the ninth aspect, the movement restriction mechanism (912) includes a protrusion (184) provided on the rotary fastener (18). The protrusion (184) comes into contact with the housing (11) when the rotary fastener (18) moves in a direction toward the restriction position.

[0131] According to this embodiment, the movement restriction mechanism (912) can be realized with a simple configuration.

[0132] The adapter (1) of an eleventh aspect is the adapter (1) of any one of the third to tenth aspects, further comprising a restriction mechanism (second restriction mechanism 92) that restricts movement of the rotary fastener (18) in the restricted position.

[0133] According to this embodiment, the rotation fastener (18) can be prevented from unintentionally moving from the restricted position.

[0134] In the adapter (1) of the twelfth aspect, in the eleventh aspect, the rotary fastener (18) has a plate-shaped portion (183) that is elastically deformable in a specific direction (A2) that intersects with the predetermined direction (A1). The restricting mechanism (second restricting mechanism 92) includes a protrusion (184) provided on the plate-shaped portion (183) of the rotary fastener (18) and a recess (115) provided on the housing (11) into which the protrusion (184) fits when the rotary fastener (18) is in the restricting position.

[0135] According to this embodiment, the rotary fastener (18) can be prevented from unintentionally moving from the release position to the restriction position.

[0136] The adapter (1) of the thirteenth aspect is the adapter (1) of the twelfth aspect, further comprising a deformation prevention portion (187) that restricts excessive elastic deformation of the plate-like portion (183) in a specific direction (A2).

[0137] According to this embodiment, excessive deformation of the plate-like portion (183) can be suppressed.

[0138] In the adapter (1) of the 14th aspect, in the 13th aspect, the deformation prevention portion (187) includes an arch portion (186) that is arranged to span the plate-shaped portion (183) of the rotating fastener (18) in the width direction.

[0139] According to this embodiment, the plate-like portion (183) comes into contact with the arch portion, thereby preventing the plate-like portion (183) from being excessively deformed.

[0140] In the adapter (1) of the 15th aspect, in any one of the third to fourteenth aspects, the rotary fastener (18) has a slide portion (182) that is located within a slide groove (114) extending along a predetermined direction (A1) and slides within the slide groove (114).

[0141] According to this embodiment, the rotary fastener 18 can be slidably moved, and displacement of the rotary fastener 18 in a direction intersecting the longitudinal direction of the slide groove 114 can be suppressed.

[0142] A duct system (100) of a sixteenth aspect includes the adapter (1) of any one of the first to fifteenth aspects and a wiring duct (2).

[0143] According to this embodiment, it is possible to prevent the electric device (3) from falling off from the wiring duct (2).

[0144] An electric equipment system (200) according to a seventeenth aspect includes the duct system (100) according to the sixteenth aspect and an electric equipment (3).

[0145] According to this embodiment, it is possible to prevent the electric device (3) from falling off from the wiring duct (2). [Explanation of symbols]

[0146] 100 Duct System 200 Electrical Equipment Systems 1 adapter 11. Housing 111 Insertion hole 114 Slide groove 115 recess 15 Holding part 166 1st contact part 167 Second contact part 18 Rotating fastener 182 Slide section 183 Plate-shaped part 184 protrusion 186 Arch 187 Deformation prevention part 2 Wiring duct 22 Second conductor (conductor) 3. Electrical Equipment 330 Regulations 333 Insertion part (part of electrical equipment) 34 Conductive part 91 First Regulatory Agency (Regulatory Agency) 911 fall prevention mechanism 912 Mobile Regulatory Agency 92 Second Regulatory Agency (Regulatory Agency) A1 Direction A2 Specific direction

Claims

1. An adapter interposed between a wiring duct and an electrical device for connecting the electrical device to the wiring duct, a pair of first contact portions that respectively contact the pair of conductors of the wiring duct; a holding portion that holds the electrical device by rotating the electrical device relatively; a pair of second contact portions electrically connected to the pair of first contact portions, respectively, and contacting a pair of conductive portions of the electric device when the electric device is held by the holding portion; a rotation fastener that faces or comes into contact with a defined surface of the electrical device when the electrical device is held by the holding portion, thereby suppressing rotation of the electrical device relative to the holding portion, adapter.

2. the pair of conductive parts of the electrical device are aligned in one direction, the defining surface of the electrical device is a plane along a direction in which the pair of conductive portions are arranged. The adapter of claim 1 .

3. Further, a housing that accommodates the holding portion therein is provided, The rotational fastener is held by the housing; The rotation stopper is movable in a predetermined direction relative to the housing between a restricted position close to the holding portion and a released position away from the holding portion. The adapter of claim 1 .

4. the housing has an elongated insertion hole into which a part of the electrical device is inserted, the holding portion holds the electrical device by inserting the portion of the electrical device into the insertion hole and then rotating the electrical device relative to the holding portion; The predetermined direction is a direction along the longitudinal direction of the insertion hole.

4. The adapter of claim 3.

5. The rotary fastener is disposed so as to block a portion of the insertion hole.

5. The adapter of claim 4.

6. a first restriction mechanism that restricts movement of the rotary fastener when the rotary fastener is in the release position; 4. The adapter of claim 3.

7. The restriction mechanism includes a fall-off prevention mechanism that prevents the rotation fastener from falling off from the housing.

7. The adapter of claim 6.

8. the housing has an elongated insertion hole into which a part of the electrical device is inserted, the fall-off prevention mechanism includes a protruding wall portion of the rotary fastener, The protruding wall portion contacts the periphery of the insertion hole in the housing, thereby preventing the rotation fastener from falling off from the housing.

8. The adapter of claim 7.

9. The restriction mechanism includes a movement restriction mechanism that restricts movement of the rotation fastener in a direction toward the restriction position.

7. The adapter of claim 6.

10. the movement restriction mechanism is provided on the rotation fastener and includes a protrusion that comes into contact with the housing when the rotation fastener moves in a direction toward the restriction position.

10. The adapter of claim 9.

11. The rotation stopper further includes a restricting mechanism that restricts movement of the rotation stopper when the rotation stopper is in the restricting position.

4. The adapter of claim 3.

12. the rotary fastener has a plate-shaped portion that is elastically deformable in a specific direction that intersects with the predetermined direction, The restriction mechanism includes a protrusion provided on the plate-shaped portion of the rotary fastener, and a recess provided on the housing, into which the protrusion fits when the rotary fastener is in the restriction position.

12. The adapter of claim 11.

13. The device further includes a deformation prevention portion that restricts excessive elastic deformation of the plate-shaped portion in the specific direction.

13. The adapter of claim 12.

14. The deformation prevention portion includes an arch portion provided so as to span the plate-shaped portion of the rotary fastener in the width direction.

14. The adapter of claim 13.

15. The rotary fastener has a slide portion that is positioned within a slide groove that extends along the predetermined direction and slides within the slide groove.

4. The adapter of claim 3.

16. The adapter according to claim 1; The wiring duct, Duct system.

17. 17. A duct system according to claim 16; The electrical device. Electrical equipment systems.

Images