TW201916499A - Wiring duct, plug device, and power distribution system are easy to electrically connect the grounding wiring before electrically connecting the power supply wiring in the connection for both wiring duct and the plug device - Google Patents

Abstract

The invention provides a wiring duct, a plug device, and a power distribution system. It is easy to electrically connect the grounding wiring before electrically connecting the power supply wiring in the connection for both wiring duct and the plug device. In the invention, the wiring duct (100) includes: a frame (10) that is hollow and has conductivity; a housing (20) held by the frame (10) in the internal space (14) of the frame (10); and a power supply conductor (30) held by the housing (20) in the internal space (14). The frame (10) is provided with a grounding terminal (11) at a portion of its outer surface.

Description

Wiring duct, plug device and power distribution system

The present invention relates generally to wiring ducts, plug devices, and power distribution systems. Specifically, the present invention relates to a wiring duct constituting a power supply path, a plug device connected to the wiring duct, and a power distribution system including the wiring duct and the plug device.

Conventionally, there is a power distribution system in which a plug device is installed at an arbitrary position in a wiring duct constituting a power supply path, and electric power is supplied to the electrical equipment through the wiring duct and the plug device (see, for example, Patent Document 1). Power distribution systems are installed in facilities such as factories and so-called data centers that use a large number of electrical equipment. [Prior technical literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2014-225353

[Questions to be Solved by the Invention]

An object of the present invention is to provide a wiring duct, a plug device, and a power distribution system. In connection between the wiring duct and the plug device, it is easy to electrically connect the ground wiring before the power supply wiring is electrically connected. [Means for solving problems]

A wiring duct according to one aspect of the present invention includes: a frame, which is hollow and conductive; a housing, which is held by the frame in an internal space of the frame; and a power supply conductor, which is held by the housing in the internal space. . The frame is provided with a ground terminal on a part of its outer surface.

A plug device according to an aspect of the present invention is a plug device connected to a wiring duct, and includes: a surface opposed to a part of an outer surface of the wiring duct in a state of being connected to the wiring duct; and a ground connection terminal, Protrude from this side.

A power distribution system according to an aspect of the present invention includes the wiring duct and the plug device.

First, the outline of the process of completing the present invention will be described.

In the present invention, when the wiring duct and the plug device are connected, not only the power supply wiring is electrically connected, but also the ground wiring may be electrically connected.

On the connection of the wiring duct and the plug device, if the power supply wiring is electrically connected, and then the ground wiring is electrically connected, it takes a short time, but "the ground wiring has not been electrically connected, and The power supply wiring is electrically connected. " In view of the stricter safety standards in recent years, it is still preferable to avoid the state where the ground wiring is not electrically connected even if the time taken is short.

Therefore, an object of the present invention is to provide a wiring duct, a plug device, and a power distribution system. In connection between the wiring duct and the plug device, it is easy to electrically connect the ground wiring before the power supply wiring is electrically connected.

Here, a wiring duct 100, a plug device 200, and a power distribution system 300 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 7B.

The power distribution system 300 including the wiring duct 100 and the plug device 200 is used to supply electric power to, for example, electrical equipment in a facility. The wiring duct 100 is installed in a facility, for example, and constitutes a power supply path. By connecting the plug device 200 to which the electric equipment is connected to an appropriate position in the wiring duct 100, electric power can be supplied to the electric equipment by the wiring duct 100 and the plug apparatus 200. The power distribution system 300 is installed in facilities such as factories and so-called data centers using a large number of electrical equipment.

In the power distribution system 300 shown in FIG. 1, the wiring duct 100 is formed in a long shape, and the longitudinal direction is provided along the horizontal plane. The plug device 200 is connected to the downward-facing surface of the wiring duct 100. The plug device 200 may be connected to an upward-facing surface of the wiring duct 100 or the like. In addition, the wiring duct 100 may be installed in various postures, such as the longitudinal direction of the wiring duct 100 along the vertical direction.

In the following description, the power distribution system 300 is set as shown in FIG. 1. In the following description, the direction perpendicular to the horizontal plane is indicated by “up and down direction”, the lower direction in the up and down direction is indicated by “down”, and "Means the top of it. In addition, the "longitudinal direction" indicates the longitudinal direction of the wiring duct 100, and the "front-rear direction" indicates a direction perpendicular to both the "up-down direction" and the "left-right direction". Further, in the front-rear direction, the “back” side indicates the side on which the ground connection terminal 50 is provided with respect to the connection portion 82 described later, and the “front” side indicates the side opposite to the “rear”. Furthermore, in the left-right direction, the left side is represented by the “left side” when viewed from the front, and the right side is represented by the “right side”. In the drawing, arrows are used to display "up" and "down" in "up and down directions", "front" and "back" in "back and forth directions", and "left" and "left and right" Right ". These arrows are labeled for convenience only and are not physical. Moreover, these directions are not intended to limit the installation state of the power distribution system 300.

In addition, in the following description, a direction and a single direction that are perpendicular to a specific direction (for example, the protruding direction of the connecting portion 82) do not mean only a direction and a single direction that are exactly 90 ° with respect to the specific direction, as long as the reference technology Common sense can play a role expected in this embodiment, and also includes a direction and a single direction that can be regarded as forming a 90 °.

Hereinafter, the electrical connection between the grounding conductor in the wiring duct 100 and the grounding conductor in the plug device 200 is sometimes referred to as a ground connection. The electrical connection between the power supply conductor in the wiring duct 100 and the power supply conductor in the plug device 200 is sometimes referred to as a power supply connection.

As shown in FIG. 1 to FIG. 3, the wiring duct 100 includes: a frame 10 that is hollow and conductive; a housing 20 that is held by the frame 10 in an internal space 14 of the frame 10; and a power-supply conductor 30 inside The space 14 is held by the case 20. The frame 10 is provided with a ground terminal 11 on a part of an outer surface thereof.

When the wiring duct 100 according to this embodiment is connected to the plug device, it can be grounded on the outer surface of the frame 10 between the ground terminal 11 and the grounding conductor in the plug device. Therefore, it is easy to make a ground connection between the wiring duct 100 and the plug device before the power supply connection is made. The plug device connected to the wiring duct 100 may be the plug device 200 according to this embodiment, or may be another plug device.

The plug device 200 according to this embodiment is connected to a wiring duct. As shown in FIGS. 2 to 4, the plug device 200 includes a surface 52 facing a part of the outer surface of the wiring duct while being connected to the wiring duct, and a ground connection terminal 50 protruding from the surface 52. . The ground connection terminal 50 is a grounding conductor in the plug device 200.

When the plug device 200 according to this embodiment is connected to the wiring duct, it can be grounded between the ground connection terminal 50 and the grounding conductor in the wiring duct on the outer surface of the wiring duct. Therefore, it is easy to make a ground connection between the wiring duct and the plug device 200 before the power supply connection is made. The wiring duct connected to the plug device 200 may be the wiring duct 100 according to this embodiment, or may be another wiring duct.

As shown in FIGS. 1 to 3, a power distribution system 300 according to the present embodiment includes the wiring duct 100 according to the present embodiment and the plug device 200 according to the present embodiment.

When the power distribution system 300 according to this embodiment is connected to both the wiring duct 100 and the plug device 200, the ground connection terminal 50 of the plug device 200 and the ground terminal 11 on the outer surface of the frame 10 are brought into contact to make a ground connection. For its advantages. Therefore, it is easy to make a ground connection between the wiring duct 100 and the plug device 200 before the power supply connection is performed.

Here, the configuration of the wiring duct 100, the plug device 200, and the power distribution system 300 according to this embodiment will be described in more detail. The power distribution method of the wiring duct 100, the plug device 200, and the power distribution system 300 described below is a single-phase three-wire power distribution method, but may be, for example, a three-phase three-wire power distribution method or a three-phase four-wire power distribution method. For the wiring duct 100, the plug device 200, and the power distribution system 300, appropriate design changes can be made according to the power distribution method.

First, the wiring duct 100 according to this embodiment will be described. As shown in FIGS. 1 to 3, the wiring duct 100 includes the frame 10, the case 20 held by the frame 10, and the power-supply conductor 30 held by the case 20 as described above. In this embodiment, the wiring duct 100 further includes a coating portion 40.

The frame 10 has conductivity, is made of, for example, metal, and has a length. That is, the frame 10 has a long shape. The longitudinal direction of the frame 10 is consistent with the left-right direction. The frame 10 has a cylindrical shape, and the axis of the cylindrical body is formed along the left-right direction. The frame 10 further has a connection port 12 that connects both the internal space 14 of the frame 10 and the external space of the frame 10. The connection port 12 is provided on a downward-facing surface of the outer surface of the frame 10, and forms an opening downward toward the external space. Therefore, the opening direction of the connection port 12 is the same as the vertical direction. The connection port 12 is formed in a slit shape formed along the left-right direction. The opening direction of the connection port 12 is a direction perpendicular to the connection port 12.

The case 20 has electrical insulation, is made of, for example, synthetic resin, and covers the inner surface of the frame 10. The casing 20 includes a first holding portion 21, a second holding portion 22, and a third holding portion 23. The first holding portion 21 is provided at a position of the upper portion of the connection port 12 that faces the connection port 12. The second holding portion 22 and the third holding portion 23 are provided in parallel in the front-rear direction between the connection port 12 and the first holding portion 21.

The first holding portion 21, the second holding portion 22, and the third holding portion 23 hold the power supply conductor 30, respectively. Hereinafter, the power supply conductor 30 held by the first holding portion 21, the power supply conductor 30 held by the second holding portion 22, and the power supply conductor 30 held by the third holding portion 23 are referred to as the first power supply, respectively. The conductor 31, the second power-supply conductor 32, and the third power-supply conductor 33. The power-supply conductor 30 has conductivity, is made of, for example, metal, and is formed in a rod shape having a length in the left-right direction. The first power-supply conductor 31, the second power-supply conductor 32, and the third power-supply conductor 33 are held in the first holding portion 21, the second holding portion 22, and the third holding portion 23, respectively. The first power-supply conductor 31 is, for example, the S pole of a single-phase three-wire type wiring, and the second power-supply conductor 32 and the third power-supply conductor 33 are, for example, the R and T poles of a single-phase three-wire type wiring.

The first holding portion 21 includes a first through hole 24 through which the first power feeding conductor 31 is exposed. The first through hole 24 is opened downward toward the inner space 14 of the frame 10 and faces the connection port 12. The second holding portion 22 has a second through hole 25 connected to the second power supply conductor 32, and the third holding portion 23 has a third through hole 26 connected to the third power supply conductor 33. The second through-holes 25 and the third through-holes 26 face the internal space 14 of the frame 10, and are respectively formed with openings in front and rear, and face each other.

The coating portion 40 covers the outer surface of the frame 10. The film portion 40 has electrical insulation and is made of, for example, a synthetic resin. In this embodiment, both the coating portion 40 and the case 20 are connected to form a single member. I can also say that the frame 10 is embedded in a member composed of both the film portion 40 and the case 20. It can also be said that the frame 10 is covered with a member composed of both the film portion 40 and the case 20.

The frame 10 is provided with a ground terminal 11 on a part of an outer surface thereof. The ground terminal 11 is formed in a band shape along the longitudinal direction of the frame 10 (that is, along the left-right direction). The film portion 40 includes an exposure opening 41 that exposes the ground terminal 11. The exposed opening 41 is formed in the shape of a strip in the same manner as the ground terminal 11 and is formed along the longitudinal direction of the frame 10. I can also say that the portion of the outer surface of the frame 10 that is exposed at the exposed opening 41 is the ground terminal 11.

The frame 10 is provided with a second ground terminal 13 on a part of its inner surface. In this embodiment, the frame 10 has a protruding portion protruding toward the inner space 14. The surface of the protruding portion exposed to the inner space 14 is the second ground terminal 13. Therefore, the second ground terminal 13 protrudes toward the inner space 14 of the frame 10. Further, the protruding portion may be formed by bending a part of the frame 10, but even if it has another configuration, it may be a shape in which the second ground terminal 13 protrudes into the internal space 14. If the second ground terminal 13 is viewed from a direction opposite to its protruding direction, the second ground terminal 13 is formed in a band shape along the longitudinal direction of the frame 10. The case 20 includes a second exposure port 27 that exposes the second ground terminal 13. The second exposure opening 27 is the same as the second ground terminal 13, and is also formed in a band shape along the longitudinal direction of the frame 10 (that is, along the left-right direction). The second ground terminal 13 passes through the second exposure opening 27 and protrudes toward the inner space 14 of the frame 10 compared to the inner surface of the case 20. I can also say that the portion of the inner surface of the frame 10 that is exposed at the second exposure opening 27 is the second ground terminal 13.

The ground terminal 11 faces downward, that is, the same direction as the direction in which the connection port 12 opens into the external space. In addition, the second ground terminal 13 faces upward (that is, protrudes upward), that is, faces the direction opposite to the direction in which the connection port 12 opens into the external space. Both the ground terminal 11 and the connection port 12 are juxtaposed from the rear to the front, that is, in a direction perpendicular to both the long side direction of the frame 10 and the opening direction of the connection port 12. Therefore, when the plug device is connected to the wiring duct 100, it is easy to make a power supply connection through the connection port 12 and a ground connection using the ground terminal 11. The ground terminal 11 is located behind the connection port 12, and the second ground terminal 13 is located before the connection port 12. That is, the ground terminal 11, the connection port 12, and the second ground terminal 13 are arranged side by side in this order along a direction perpendicular to both the longitudinal direction of the frame 10 and the opening direction of the connection port 12.

In addition, although the frame 10 in this embodiment has the second ground terminal 13 as described above, the frame 10 may not be provided with the second ground terminal 13. In addition, as described above, the frame 10 in this embodiment is provided with the ground terminal 11 only at a position on the rear side with respect to the connection port 12. However, the frame 10 may be provided with the ground terminal 11 at both the rear position and the front position with respect to the connection port 12.

Next, the plug device 200 according to this embodiment will be described.

As shown in FIG. 2 to FIG. 4, the plug device 200 includes a surface 52 facing a part of the outer surface of the wiring duct in a state of being connected to the wiring duct (hereinafter referred to as an opposing surface 52); and a ground connection terminal. 50, protruding from the facing surface 52. The plug device 200 further includes a power supply terminal 70. When the plug device 200 is connected to the wiring duct, the ground connection terminal 50 is electrically connected to a grounding conductor in the wiring duct to generate a ground connection. When the plug device 200 is connected to the wiring duct, the power supply terminal 70 is electrically connected to a power supply conductor in the wiring duct to generate a power connection. A cable 400 is connected to the plug device 200. The cable 400 includes: a ground wire, which is electrically connected to the ground connection terminal 50; and a wire, which is electrically connected to the power supply terminal 70. In this embodiment, the plug device 200 further includes a circuit breaker. The circuit breaker and the power supply terminal 70 are electrically connected to both the electric wires.

The plug device 200 includes a main body portion 81 and a connecting portion 82 that protrudes upward from the main body portion 81. The facing surface 52 is provided at an upper end portion of the plug device 200 and faces upward. The connecting portion 82 projects upward from the facing surface 52 of the main body portion 81. The cable 400 is connected to a lower end portion of the main body portion 81. The ground connection terminal 50 is provided at an upper end portion of the main body portion 81, the power supply terminal 70 is provided at the connection portion 82, and the circuit breaker is housed in the main body portion 81.

The detailed structure of the plug device 200 is further described below.

As shown in FIGS. 2 to 4, the connecting portion 82 protrudes from the facing surface 52 of the main body portion 81. The connection portion 82 includes a first side surface 83 that faces rearward, and a second side surface 84 that faces forward. The size between the first side surface 83 and the second side surface 84 is smaller than the width dimension of the connection port 12. In the connecting portion 82, an edge portion on the first side surface 83 side and an edge portion on the second side surface 84 side are located above the connecting portion 82, respectively, and are provided with protruding pieces 85 protruding upward.

As shown in FIGS. 2 to 4, the ground connection terminal 50 projects upward from the facing surface 52 of the main body portion 81. The opposing surface 52 of the main body portion 81 has an opening 811, and the ground connection terminal 50 protrudes from the opening 811.

Hereinafter, the configuration of the ground connection terminal 50 will be described in detail. The main body portion 81 includes a top plate 812 constituting the facing surface 52, and a ground plate 813 made of metal and housed inside the main body portion 81 (refer particularly to FIGS. 2, 3, and 5). The ground plate 813 has a terminal 814 to which a ground wire is connected. The ground plate 813 includes a connection plate 815 overlapping the bottom surface of the top plate 812. The connection plate 815 is fixed to the top plate 812 with rivets 816. The opening 811 penetrates both the top plate 812 and the ground plate 813.

In the present embodiment, as shown in FIG. 6, the plug device 200 includes a spring structure 60. The ground connection terminal 50 and the spring structure 60 are electrically connected. When the ground connection terminal 50 is pushed in a direction (downward) opposite to the protruding direction (upper), the spring structure 60 applies an elastic force to the ground connection terminal 50 toward the protruding direction (upper) of the ground connection terminal 50. Specifically, the plug device 200 includes a ground member 53. The ground member 53 includes a ground connection terminal 50 and a spring structure 60. The grounding member 53 is formed of a curved band-shaped metal plate. The ground connection terminal 50 is bent to form a mountain shape, and the top of the ground connection terminal 50 faces the protruding direction (upward) of the ground connection terminal 50. The ground connection terminal 50 has two end portions (hereinafter referred to as a base end portion) facing in a direction (downward) opposite to the protruding direction (upper direction). The two base end portions are juxtaposed in the left-right direction, that is, the juxtaposed direction of the two base end portions is perpendicular to the protruding direction of the ground connection terminal 50. The spring structure 60 includes two leaf springs 61 connected to the two base ends of the ground connection terminal 50, respectively. Therefore, the ground connection terminal 50 is electrically connected to the leaf spring 61. Two plate springs 61 protrude from the ground connection terminal 50 to the left and right, respectively. That is, the two leaf springs 61 protrude from the ground connection terminal 50 in opposite directions, and the protrusion direction of each leaf spring 61 and the protrusion direction of the ground connection terminal 50 are perpendicular. Each leaf spring 61 is formed in a long plate shape along its protruding direction, and the thickness direction of the leaf spring 61 is along the protruding direction of the ground connection terminal 50. That is, the longitudinal direction of the leaf spring 61 is the same as the left-right direction, and the thickness direction of the leaf spring 61 is the same as the vertical direction.

Each leaf spring 61 includes a fixing portion 64 that is fixed to the plug device 200 and a coupling portion 65 that is a portion connected to the ground connection terminal 50. Each of the leaf springs 61 is further provided with a portion 66 between the fixed portion 64 and the joint portion 65, and the portion 66 extends in a direction crossing the connecting line segment of both the fixed portion 64 and the joint 65. Each of the leaf springs 61 shown in FIG. 6 is formed in a curved shape, and is bent in a direction (front-rear direction) perpendicular to both the longitudinal direction and the thickness direction of the leaf spring 61. That is, the leaf spring 61 is formed in a meandering shape. As described above, since the leaf spring 61 is formed in a curved shape, it can have a portion 66 that extends in a direction that intersects with a connecting line segment of both the fixed portion 64 and the joint portion 65. Accordingly, in the leaf spring 61, the actual size from the fixing portion 64 to the coupling portion 65 can be made longer than the size of the connecting line segment of both the fixing portion 64 and the coupling portion 65.

A rivet hole 62 is formed in the fixing portion 64 of each leaf spring 61. As shown in FIG. 5, the plate spring 61 overlaps the connection plate 815 so as to be in contact with the bottom surface (the surface facing downward) of the connection plate 815. The ground connection terminal 50 penetrates through the opening 811 and protrudes upward in a direction facing the facing surface 52. The leaf spring 61 is fixed to the top plate 812 and the connection plate 815 by rivets 63 passing through the rivet holes 62. Accordingly, the ground connection terminal 50 protrudes from the facing surface 52 of the main body portion 81 in a state where the ground connection terminal 50 is electrically connected to the ground plate 813 by the spring structure 60.

Since the ground connection terminal 50 has the above-mentioned configuration, when the ground connection terminal 50 is pushed downward, the spring structure 60 is elastically deformed, so the ground connection terminal 50 moves downward. At this time, the ground connection terminal 50 receives an elastic force that moves upward due to the spring structure 60 and attempts to return to the original position. As described above, the actual size of the leaf spring 61 from the fixed portion 64 to the joint portion 65 is longer than the size of the connecting line segment between the fixed portion 64 and the joint portion 65. As a result, the leaf spring 61 can be made to have a smaller elastic force compared to its external dimensions. Therefore, when the ground connection terminal 50 is pressed, the ground connection terminal 50 can be easily moved, and a small elastic force can be appropriately applied to the ground connection terminal 50.

In this embodiment, the plug device 200 includes a stopper portion 51 that restricts movement of the ground connection terminal 50 in a direction opposite to the protruding direction of the ground connection terminal 50 (see FIGS. 2, 3, and 5). The restriction of movement means to limit, for example, the distance (movement amount) that the ground connection terminal 50 can move. The stopper 51 is a part of the ground plate 813. The stopper portions 51 are provided below the ground connection terminal 50 and are opposed to each other at a distance from the ground connection terminal 50. Therefore, even if the ground connection terminal 50 is pushed and moved, when the ground connection terminal 50 contacts the stopper 51, the ground connection terminal 50 cannot move more. Therefore, when the ground connection terminal 50 is pushed, the amount of movement of the ground connection terminal 50 in a direction opposite to its protruding direction is limited to "the ground connection terminal 50 and The size of the interval between the stoppers 51 is less than or equal to "". If the plug device 200 includes such a stopper portion 51, the stopper portion 51 can restrict the movement of the ground connection terminal 50 even if the ground connection terminal 50 is accidentally pushed. Therefore, damage to the spring structure 60 due to excessive deformation can be suppressed. The amount of movement restricted by the stopper 51 can be appropriately set to an amount where the spring structure 60 is not damaged due to excessive deformation.

As shown in FIGS. 2 to 4, 7A, and 7B, the connection section 82 includes three power supply terminals 70 (a first power supply terminal 71, a second power supply terminal 72, and a third power supply terminal 73). The first power-supply terminal 71 protrudes upward from a position between the two protruding pieces 85 in the upward-facing surface of the connection portion 82 (see FIGS. 2 to 4 in particular). The second power supply terminal 72 is movable between a position accommodated in the connection portion 82 and a position protruding rearward from the first side surface 83 of the connection portion 82 (see FIG. 7A in particular). The first side surface 83 has an opening 86, and in a state where the second power supply terminal 72 protrudes from the first side surface 83, the second power supply terminal 72 protrudes from the opening 86. The third power supply terminal 73 is movable between a state accommodated in the connection portion 82 and a state protruding forward from the second side surface 84 of the connection portion 82 (see FIG. 7B in particular). Similarly, the second side surface 84 has an opening 87, and in a state where the third power supply terminal 73 protrudes from the second side surface 84, the third power supply terminal 73 protrudes from the opening 87.

The main body portion 81 includes a first operation portion 88 and a second operation portion 89 at an upper end portion thereof (refer particularly to FIGS. 7A and 7B). The first operation section 88 includes a joystick 881 that moves the second power supply terminal 72. The joystick 881 can slide, and the second power supply terminal 72 moves due to the movement of the joystick 881. The second operation unit 89 includes a joystick 891 that moves the third power supply terminal 73. The joystick 891 can slide, and the third power supply terminal 73 moves due to the movement of the joystick 891.

A first holder 91 is provided on the upper portion of the first operation portion 88, and a second holder 92 is provided on the upper portion of the second operation portion 89 (refer particularly to FIGS. 7A and 7B). The first holder 91, the connecting portion 82, and the second holder 92 are juxtaposed from left to right in this order. Each of the holders 91 and 92 is rotatable around a rotation axis extending in the vertical direction. By rotating the first holder 91, the first holder 91 can be compared with the first holder 91 at both ends of the first holder 91 in a state where the first holder 83 is not protruding from the first side 83 and the second side 84 of the connecting portion 82, respectively. 83 is switched between the rear projection and the front projection of the second side 84. Similarly, the second holder 92 can also be rotated to protrude from the first side surface 83 and the second side surface 84 of the connecting portion 82 and to protrude from the first side surface 83 at both ends. Switching is performed between the rear side and the state where the second side surface 84 projects from the front side. The first holder 91 and the second holder 92 have conductivity and are electrically connected to a ground line.

The first holder 91 is rotated by the movement of the joystick 881 of the first operation portion 88. That is, both the second power supply terminal 72 and the first holder 91 move in conjunction with the movement of the joystick 881, and thus move. When the second power supply terminal 72 is located in the connection portion 82, the first holder 91 is in a state where it does not protrude from the first side surface 83 and the second side surface 84. When the second power supply terminal 72 is protruded from the first side surface 83, both ends of the first holder 91 are respectively protruded from the rear side compared to the first side surface 83 and protruded from the second side surface 84. The state ahead. Similarly to the third power supply terminal 73, the second holder 92 is rotated by the movement of the lever 891 of the second operation portion 89. That is, both the third power supply terminal 73 and the second holder 92 are linked due to the movement of the joystick 891, and thus move. When the third power supply terminal 73 is located in the connection portion 82, the second holder 92 is in a state where it does not protrude from the first side surface 83 and the second side surface 84. When the third power-supply terminal 73 is located at a position protruding from the second side surface 84, both ends of the second holder 92 are respectively protruding rearward from the first side surface 83 and protruding from the second side surface 84. The state ahead.

In this embodiment, as described above, the plug device 200 includes a circuit breaker between the power supply terminal 70 and the electric wire, but it may not include the circuit breaker. The plug device 200 may include a device called a leakage circuit breaker, a terminal block, or a current transformer (CT), for example.

Next, a power distribution system 300 according to this embodiment will be described. As shown in FIGS. 1 to 3, the power distribution system 300 includes the wiring duct 100 according to the present embodiment and the plug device 200 according to the present embodiment.

When connecting the plug device 200 to the wiring duct 100, first of all, the plug device 200 is provided with both the second power supply terminal 72 and the third power supply terminal 73 in a position accommodated in the connection portion 82. Furthermore, both the first holder 91 and the second holder 92 are in a state where they do not protrude from the first side surface 83 and the second side surface 84 of the connection portion 82. In this state, the plug device 200 is aligned with the wiring duct 100 in such a manner that the facing surface 52 and a portion of the outer surface of the wiring duct 100 where the connection port 12 is opposed, the connection portion 82 and the connection port 12 The ground connection terminal 50 and the ground terminal 11 face each other. Further, in the present embodiment, the plug device 200 includes a convex portion 54 protruding from the facing surface 52. The wiring duct 100 has a recessed portion 55 in which the convex portion 54 can be inserted in a state where the plug device 200 and the wiring duct 100 are aligned. When the plug device 200 is connected to the wiring duct 100 in an accurately aligned state, the convex portion 54 is fitted into the concave portion 55. When the plug device 200 is placed upside down, etc., and is not accurately aligned, the convex portion 54 will not fit into the outer surface of the wiring duct 100, and the plug device 200 cannot be connected to the wiring duct 100. Therefore, the alignment operation of the plug device 200 is easy.

In this state, the connection portion 82 is inserted into the internal space 14 of the wiring duct 100 from the connection port 12. The connection portion 82 enters between the second holding portion 22 and the third holding portion 23 in the internal space 14 and moves upward toward the first holding portion 21. In this way, as shown in FIG. 2, the ground connection terminal 50 contacts the ground terminal 11 and is electrically connected to the ground terminal 11, and the ground connection terminal 50 is moved downward because it is pushed by the ground terminal 11. Next, as shown in FIG. 3, the first power supply terminal 71 contacts the first power supply conductor 31 through the first through hole 24 and is electrically connected to the first power supply conductor 31. The connection portion 82 is disposed between the second holding portion 22 and the third holding portion 23. At this time, the first side surface 83 and the second holding portion 22 face each other, and the opening 86 of the first side surface 83 and the second through hole 25 of the second holding portion 22 face each other. In addition, the second side surface 84 and the third holding portion 23 face each other, and the opening 87 of the second side surface 84 and the third through hole 26 of the third holding portion 23 face each other. In this state, when the joysticks 881 and 891 are operated to make them slide, the second power supply terminal 72 protrudes from the first side 83 through the opening 86, and the third power supply terminal 73 from the second side through the opening 87 84 stands out. Further, both ends of the first holder 91 protrude rearward from the first side surface 83 and protrude forward from the second side surface 84, respectively. The two ends of the second holder 92 also protrude rearward relative to the first side surface 83 and protrude forward from the second side surface 84 respectively. Therefore, the second power supply terminal 72 contacts the second power supply conductor 32 through the second through hole 25 and is electrically connected to the second power supply conductor 32. The third power supply terminal 73 contacts the third power supply conductor 33 through the third through hole 26 and is electrically connected to the third power supply conductor 33. In addition, both ends of the first holder 91 and both ends of the second holder 92 are caught on the inner surface of the wiring duct 100, thereby preventing the plug device 200 from being detached from the wiring duct 100. Furthermore, the first holder 91 and the second holder 92 and the second ground terminal 13 overlap and come into contact with each other, and are electrically connected. Thereby, the plug device 200 is connected to the wiring duct 100.

In the power distribution system 300 according to this embodiment, the first power supply terminal 71, the second power supply terminal 72, and the third power supply terminal 73 are respectively connected to the first power supply conductor 31, the second power supply conductor 32, and the third power supply. Electrical connection is made with the conductor 33 to produce a power connection. In this embodiment, before the power supply connection is generated, the ground terminal 11 and the ground connection terminal 50 are brought into contact to generate a ground connection.

In the connection between the wiring duct 100 and the plug device 200, in order to make a ground connection before the power supply connection is made, the embodiment is as described above. After both the ground terminal 11 and the ground connection terminal 50 contact first, the first power supply conductor Both 31 and the first power supply terminal 71 are in contact again. Therefore, in this embodiment, the positional relationship between the ground terminal 11 and the first power supply conductor 31 in the wiring duct 100 and the positions of both the ground connection terminal 50 and the first power supply terminal 71 in the plug device 200 are discussed. Relationships are set appropriately. Furthermore, in this embodiment, the second power supply terminal 72 and the third power supply terminal 73 can be moved between a state of being accommodated in the connection portion 82 and a state of being protruded from the connection portion 82. Therefore, after the ground connection is made, the second power supply terminal 72 and the third power supply terminal 73 can be moved from the connection portion 82 and protrude from the connection portion 82, and can be connected to the second power supply conductor 32 and the third power supply The conductors 33 are each electrically connected.

The present embodiment has the above-mentioned configuration, so that a ground connection is made before a power connection is made. In this embodiment, the power supply terminal 70 comes into contact with the power-supplying conductor 30 and a power-supply connection occurs. Therefore, in the present embodiment, on the connection of the wiring duct 100 and the plug device 200, by pushing the plug device 200 toward the wiring duct 100 until the position where the two can be connected, the power supply connection can be generated, and it will not happen before this. Make a power connection. Therefore, it is easy to cause the ground connection terminal 50 to contact the ground terminal 11 before the power connection is made, so as to generate a ground connection. In addition, even if the amount of movement of the ground connection terminal 50 is small, it is still easy to produce a ground connection before a power connection is made, so that the plug device 200 can be simplified. However, as long as the ground connection between the ground terminal 11 and the ground connection terminal 50 can be achieved before the power supply conductor 30 and the power supply terminal 70 are electrically connected, the structure of the power supply conductor 30 and the power supply terminal 70 and the two Any kind of structure and method can be used for connection.

In this embodiment, not only the ground terminal 11 and the ground connection terminal 50, but also the first holder 91, the second holder 92, and the second ground terminal 13 can be grounded. Make the ground connection securely. Moreover, in this embodiment, the plug device 200 includes the first holder 91 and the second holder 92 as the holder. However, as long as the plug device 200 includes at least one holder, the number of the plug device 200 may be any number. When the plug device 200 includes a plurality of holders, it is sufficient that at least one holder can be grounded to the second ground terminal 13. In addition, the holder does not have a function of ground connection, and only the ground connection between the ground terminal 11 and the ground connection terminal 50 may be performed.

In this embodiment, as described above, the plug device 200 includes the spring structure 60. Therefore, when the ground connection terminal 50 is moved by being pushed, the spring structure 60 can apply an elastic force to the ground connection terminal 50. Therefore, in a state where the plug device 200 is connected to the wiring duct 100, the contact pressure generated between the first power supply terminal 71 and the wiring duct 100 can be made compared with that between the ground connection terminal 50 and the wiring duct 100. The contact pressure generated is large. Thereby, damage to the ground connection terminal 50 is suppressed.

In the present embodiment, the contact pressure is suppressed by the spring structure 60, but the contact pressure may be suppressed by other appropriate means.

In this embodiment, since the leaf spring 61 has a meandering shape as described above, it includes a portion 66 that extends in a direction that intersects the connecting line segment of both the fixed portion 64 and the joint portion 65. However, since the leaf spring 61 has a shape other than that, the leaf spring 61 may include a portion 66 extending in a direction that intersects the connecting line segment between the fixed portion 64 and the joint portion 65. For example, the leaf spring 61 may be formed in a shape like an arc. The leaf spring 61 does not need to include a portion 66 extending in a direction crossing the connecting line segment of both the fixed portion 64 and the joint portion 65.

In this embodiment, the spring structure 60 is a leaf spring 61. However, as long as the ground connection terminal 50 is pushed in a direction opposite to the protruding direction thereof, the ground connection terminal 50 can be elastically oriented toward the protruding direction of the ground connection terminal 50 to form a plate spring 61 Properly constructed. In addition, in the present embodiment, the plug device 200 includes a ground member 53 including a ground connection terminal 50 and a spring structure 60. However, since the ground connection terminal 50 can be elastically deformed, the ground connection terminal 50 may include a spring structure 60.

In this embodiment, the stopper portion 51 is a part of the ground plate 813 and is provided at a position on the side opposite to the protruding direction of the ground connection terminal 50 with respect to the ground connection terminal 50, so the movement of the ground connection terminal 50 is restricted. However, the stopper portion 51 may have any other appropriate structure. In other words, the stopper portion 51 may be formed in a proper configuration according to the configurations of the ground connection terminal 50 and the spring structure 60. The plug device 200 may not include the stopper 51.

In this embodiment, as described above, the ground terminal 11 is formed in a band shape along the longitudinal direction of the frame 10. Therefore, even if the connection position of the plug device 200 in the wiring duct 100 is changed along the longitudinal direction of the wiring duct 100, the ground connection between the ground terminal 11 and the ground connection terminal 50 can still be performed. When the wiring duct 100 is connected to the plug device 200, in addition to the connection position of the plug device 200, the connection port 12 may be closed by a cover.

The wiring duct 100, the plug device 200, and the power distribution system 300 according to this embodiment are not limited to the above description, and various configurations can be added, deleted, or replaced as needed to make design changes.

For example, the shape of the connection port 12 is not limited to the above description. As long as the connection port 12 can connect the inner space 14 and the outer space of the frame 10, the connection port 12 can be provided in various positions in the frame 10 and can be formed in various shapes. For example, the connection port 12 may be provided at a specific position in the long-side direction of the frame 10, and may form an appropriate shaped opening such as a rectangle. The frame may have a plurality of connection ports 12, and the connection ports 12 may be juxtaposed in the longitudinal direction of the frame 10. At this time, a user who performs the connection operation of the plug device 200 may select any one of the connection ports 12 to connect the plug device 200.

The position and shape of the ground terminal 11 are not limited to the above description. As long as a ground terminal 11 is provided on a part of the outer surface of the frame 10, it is easy to make a ground connection before the power supply connection. For example, the ground terminal 11 does not have a band shape, but may be provided only at a specific position in the longitudinal direction of the frame 10. For another example, when the frame 10 has a plurality of connection ports 12, the ground terminals 11 may be provided for each connection port 12 one by one. However, as described above, the connection port 12 and the ground terminal 11 are arranged side by side, or even if the direction in which the connection port 12 forms an opening in the external space is the same as the direction in which the ground terminal 11 faces, it is more preferable. At this time, when the plug device is connected to the connection port 12, the grounding conductor in the plug device can particularly easily contact the ground terminal 11.

The position, number, and structure of the ground connection terminals 50 are not limited to those described above. As long as the ground connection terminal 50 protrudes from the facing surface 52 of the plug device 200, it is easy to make a ground connection before the power supply connection. For example, the plug device 200 has two ground connection terminals 50, and the connection portion 82 may be provided between the two ground connection terminals 50. At this time, the frame 10 of the wiring duct 100 according to the present embodiment may have the ground terminals 11 corresponding to the two ground connection terminals 50 respectively. The number of the ground connection terminals 50 may be three or more.

(Summary) The wiring duct (100) according to the first aspect is provided with: a frame (10), which is hollow and conductive; a casing (20), which is framed (10) in the inner space (14) of the frame (10) ); And a power supply conductor (30), which is held by the housing (20) in the internal space (14). The frame (10) is provided with a ground terminal (11) on a part of its outer surface.

According to this configuration, when the wiring duct (100) is connected to the plug device, a ground connection can be made between the ground terminal (11) and the grounding conductor in the plug device on the outer surface of the frame (10). Therefore, it is easy to make a ground connection between the wiring duct (100) and the plug device before the power supply connection.

According to the second aspect of the wiring duct (100), in the first aspect, the frame (10) is elongated, and the frame (10) further has an inner space (14) and an outer portion of the frame (10). Connection port (12) where both spaces are connected. The parallel direction of the ground terminal (11) and the connection port (12) is perpendicular to the long side direction of the frame (10) and the opening direction of the connection port (12).

With this configuration, since the ground terminal (11) is juxtaposed with the connection port (12) on the outer surface of the frame (10), it is easy to perform a ground connection when the plug device is attached to the connection port (12).

According to the third aspect of the wiring duct (100), in the second aspect, the ground terminal (11) is formed in a band shape along the longitudinal direction of the frame (10).

With this configuration, even if the connection position of the plug device in the wiring duct (100) is changed along the longitudinal direction of the wiring duct (100), the ground connection can still be made.

The wiring duct (100) according to the fourth aspect is in the second or third aspect, and the frame (10) is in the frame (10) in addition to the ground terminal (11), that is, the first ground terminal (11). A part of the inner surface is further provided with a second ground terminal (13) protruding toward the inner space (14). The juxtaposed direction of the first ground terminal (11) and the connection port (12) is perpendicular to the long side direction of the frame (10) and the opening direction of the connection port (12). The second ground terminal (13) is provided at a position opposite to the connection port (12) and the first ground terminal (11).

With this configuration, not only the first ground terminal (11) but also the second ground terminal (13) can be used for ground connection.

The wiring duct (100) according to the fifth aspect is any one of the first to fourth aspects, and further includes an electrically insulating coating portion (40) covering the outer surface of the frame (10). . The coating portion (40) has an exposure opening (41) through which the ground terminal (11) is exposed.

According to this structure, the ground terminal (11) is exposed through the exposure opening (41), which facilitates ground connection, which is an advantage.

The plug device (200) according to the sixth aspect is connected to the wiring duct. The plug device (200) includes a surface (52) facing a part of the outer surface of the wiring duct in a state of being connected to the wiring duct, and a ground connection terminal (50) protruding from the surface (52).

According to this configuration, when the wiring duct is connected to the plug device (200), the ground connection terminal (50) can be connected to the ground on the outer surface of the wiring duct, which is an advantage. Therefore, it is easy to make a ground connection between the wiring duct and the plug device (200) before the power supply connection.

The plug device (200) according to the seventh aspect is further provided with a power supply terminal (70) in the sixth aspect, and the power supply terminal (70) is connected to the wiring duct when the plug device (200) is connected to the wiring duct. The power supply conductors are electrically connected.

The plug device (200) according to the eighth aspect further includes a power supply terminal (70) in the sixth or seventh aspect. In a state where the plug device (200) is connected to the wiring duct, the contact pressure generated between the power supply terminal (70) and the wiring duct is greater than the contact pressure generated between the ground connection terminal (50) and the wiring duct.

With this configuration, even if the ground connection terminal (50) is pushed before the power supply terminal (70) is pushed, damage to the ground connection terminal (50) can be suppressed.

The plug device (200) according to the ninth aspect is further provided with a spring structure (60) in any one of the sixth to eighth aspects. When the ground connection terminal (50) faces the ground connection terminal (50) When the projecting direction is pushed in the opposite direction, the spring structure (60) applies an elastic force to the ground connection terminal (50) toward the projecting direction of the ground connection terminal (50).

With this configuration, when the ground connection terminal (50) is pushed, a moderate elastic force can be applied to the ground connection terminal (50). Therefore, the ground connection terminal (50) can be brought into contact with the grounding conductor in the wiring duct with a moderate contact pressure, thereby generating a stable electrical connection and suppressing damage to the ground connection terminal (50).

According to the tenth aspect of the plug device (200), in the ninth aspect, the spring structure (60) includes a leaf spring (61), and the leaf spring (61) has a fixing portion (64) fixed to The plug device (200) and the joint portion (65) are portions connected to the ground connection terminal (50). The leaf spring (61) further has a portion (66) which extends in a direction crossing the connecting line segment of the fixed portion (64) and the joint portion (65).

According to this structure, the actual size of the leaf spring (61) between the fixed portion (64) and the joint portion (65) can be made larger than the external size. As a result, the leaf spring (61) can generate a relatively small elastic force compared with its external dimensions. Therefore, the contact pressure generated between the ground connection terminal (50) and the wiring duct can be reduced.

The plug device (200) according to the eleventh aspect is further provided with a stopper (51) in the ninth or tenth aspect, and the stopper (51) restricts the orientation of the ground connection terminal (50) and the ground connection The protruding direction of the terminal (50) is moved in the opposite direction.

With this configuration, as the movement of the ground connection terminal (50) is restricted, excessive deformation of the spring structure (60) can be suppressed, and thereby damage to the spring structure (60) can be suppressed.

The power distribution system (300) according to the twelfth aspect, including the wiring duct (100) of any one of the first to fifth aspects, and the plug device of any of the sixth to eleventh aspects. (200).

According to this structure, in the connection between the wiring duct (100) and the plug device (200), it is easy to perform the ground terminal (11) and the ground connection terminal (50) before the power supply connection between the wiring duct (100) and the plug device. ) 'S electrical connection.

The power distribution system (300) according to the thirteenth aspect, in the twelfth aspect, the plug device (200) is provided with a power supply terminal (70), and the power supply terminal (70) is connected to the wiring duct at the plug device (200) In this state, it is electrically connected to the power supply conductor (30). The position of the ground connection terminal (50) in the plug device (200) is as follows: from the state where the plug device (200) is not connected to the wiring duct (100) until it is connected to the wiring duct (100), here In the process, it is not only opposed to the ground terminal (11), but also before touching the ground terminal (11) before the power supply conductor (30) and the power supply terminal (70) are electrically connected.

With this configuration, it is easy to connect the ground terminal (11) to the ground before the electrical connection between the power supply conductor (30) and the power supply terminal (70) is connected to the wiring duct (100) and the plug device (200). Electrical connection of terminal (50).

10‧‧‧Frame

11‧‧‧ ground terminal (first ground terminal)

12‧‧‧Connector

13‧‧‧Second ground terminal

14‧‧‧Internal space

20‧‧‧shell

21 ～ 23‧‧‧first holding section to third holding section

24 ～ 26‧‧‧First through third through holes

27‧‧‧Second Exposure Exit

30‧‧‧Power supply conductor

31 ～ 33‧‧‧first power supply conductor to third power supply conductor

40‧‧‧ Coating Department

41‧‧‧Lu exports

50‧‧‧ ground connection terminal

51‧‧‧stop

52‧‧‧ side (opposite side)

53‧‧‧ grounding member

54‧‧‧ convex

55‧‧‧ recess

60‧‧‧Spring structure

61‧‧‧ leaf spring

62‧‧‧Rivet holes

63‧‧‧Rivets

64‧‧‧Fixed section

65‧‧‧Combination

66‧‧‧ A portion extending along the "direction intersecting the connecting line segment between the fixed portion 64 and the joint portion 65"

70‧‧‧Power supply terminal

71 ～ 73‧‧‧‧First power supply terminal to third power supply terminal

81‧‧‧Body

811‧‧‧ opening

812‧‧‧Top plate

813‧‧‧ ground plate

814‧‧‧Terminal

815‧‧‧Connecting board

816‧‧‧Rivets

82‧‧‧Connection Department

83, 84‧‧‧ first and second sides

85‧‧‧ tab

86, 87‧‧‧ opening

88, 89‧‧‧ First and second operation sections

881, 891‧‧‧ Joystick

91, 92‧‧‧ first and second holders

100‧‧‧Wiring duct

200‧‧‧Plug device

300‧‧‧ Distribution System

400‧‧‧cable

[FIG. 1] A perspective view of a power distribution system including a wiring duct and a plug device according to an embodiment of the present invention. [Fig. 2] A cross-sectional view showing the steps of connecting a plug device to a wiring duct in the above-mentioned power distribution system. [FIG. 3] A cross-sectional view showing the steps of connecting a plug device to a wiring duct in the above-mentioned power distribution system. [Fig. 4] A perspective view of the plug device in the power distribution system. [Fig. 5] A perspective view showing a top plate, a ground plate, and a ground connection terminal in the plug device. [Fig. 6] A perspective view showing a ground connection terminal in the plug device. FIG. 7A is a perspective view of a part of the plug device. FIG. 7B is a perspective view of a part of the plug device.

Claims (11)

A wiring duct includes: a frame that is hollow and has conductivity; a housing that is held by the frame in an internal space of the frame; and a power supply conductor that is held by the housing in the internal space; wherein the frame is in A part of the outer surface is provided with a ground terminal. For example, the wiring duct of the first patent application scope, wherein the frame is in a long shape; the frame further has a connection port for connecting the internal space and the external space of the frame; and the ground terminal and the connection The juxtaposed direction of the interface is perpendicular to the longitudinal direction of the frame and the opening direction of the connection port. For example, the wiring duct according to the second patent application range, wherein the ground terminal is formed in a band shape along a long side direction of the frame. For example, in the wiring duct of the second or third patent scope, in addition to the ground terminal, that is, the first ground terminal, a part of the inner surface of the frame is further provided with a second projecting toward the inner space. A ground terminal; the juxtaposed direction of the first ground terminal and the connection port is perpendicular to the long side direction of the frame and the opening direction of the connection port; and the second ground terminal is disposed opposite to the connection port A position opposite to the first ground terminal. For example, the wiring duct according to any of claims 1 to 3 of the patent application scope further includes an electrically insulating coating portion covering the outer surface of the frame, and the coating portion has an exposure opening through which the ground terminal is exposed. A plug device connected to a wiring duct; comprising: a surface opposed to a portion of an outer surface of the wiring duct in a state of being connected to the wiring duct; and a ground connection terminal protruding from the surface. For example, the plug device of the scope of patent application No. 6 further includes a power supply terminal; and when connected to the wiring duct, the contact pressure generated between the power supply terminal and the wiring duct is greater than that between the ground connection terminal and the wiring duct Contact pressure. For example, the plug device of the patent application No. 6 or 7 further includes a spring structure; and when the ground connection terminal is pushed in a direction opposite to its protruding direction, the spring structure faces the protruding direction of the ground connection terminal. The ground connection terminal applies elastic force. For example, the plug device of the patent application No. 8 wherein the spring structure includes a leaf spring having a fixing portion fixed to the plug device and a joint portion connected to the ground connection terminal; In addition, the leaf spring further includes a portion extending along the "direction intersecting with the connecting line segment of the fixed portion and the joint portion". For example, the plug device of the scope of patent application No. 8 further includes a stopper that restricts the ground connection terminal from moving in a direction opposite to the protruding direction of the ground connection terminal. A power distribution system includes a wiring duct according to any one of claims 1 to 5 and a plug device according to any one of claims 6 to 10.