TWI693757B - Plug device and power distribution system - Google Patents

Abstract

The present invention provides a wiring duct, a plug device, and a power distribution system. On the connection of both the wiring duct and the plug device, it is easy to make the electrical connection of the grounding wiring before the power supply wiring is electrically connected. In the present invention, the wiring duct (100) includes: a frame (10), which is hollow and electrically conductive; a housing (20), which is held by the frame (10) in the internal space (14) of the frame (10); and The power supply conductor (30) 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.

Description

Plug device and power distribution system

The present invention generally relates to wiring conduits, plug devices and power distribution systems. More specifically, it 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 an electric power supply path, and electric power is supplied to electrical equipment through the wiring duct and the plug device (see, for example, Patent Document 1). The power distribution system is installed in facilities that use many electrical appliances, such as factories and so-called data centers.

[Prior Technical Literature]

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

An object of the present invention is to provide 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 to the wiring conduit and the plug device.

The wiring duct according to one aspect of the present invention includes: a frame that is hollow and electrically conductive; 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 . The frame is provided with a ground terminal on a part of its outer surface.

A plug device according to one aspect of the present invention is a plug device connected to a wiring duct, and includes: a face opposed to a part of an outer surface of the wiring duct when connected to the wiring duct; and a ground connection terminal, Protrude from that face.

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

10: Frame

11: Ground terminal (first ground terminal)

12: connection port

13: Second ground terminal

14: interior space

20: Shell

21~23: The first holding part ~ the third holding part

24~26: First through hole~ Third through hole

27: Second Dew Exit

30: conductor for power supply

31~33: The first power supply conductor ~ the third power supply conductor

40: Coating part

41: Exposure

50: ground connection terminal

51: Stop

52: face (opposite face)

53: Grounding member

54: convex part

55: recess

60: Spring structure

61: Leaf spring

62: rivet hole

63: Rivet

64: fixed part

65: Joint

66: A portion extending along the "direction intersecting the connecting line segment of both the fixed portion 64 and the joint portion 65"

70: power supply terminal

71~73: the first power supply terminal ~ the third power supply terminal

81: Body

811: opening

812: Top plate

813: ground plate

814: Terminal

815: connecting plate

816: Rivet

82: Connection

83, 84: first and second sides

85: tab

86, 87: opening

88, 89: the first and second operation parts

881, 891: Joystick

91, 92: first and second fixator

100: wiring conduit

200: plug device

300: power distribution system

400: cable

Fig. 1 is 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] is a cross-sectional view showing the steps of connecting a plug device with a wiring duct in the above-mentioned power distribution system.

[Fig. 3] is a cross-sectional view showing the steps of connecting a plug device with a wiring conduit in the above-mentioned power distribution system.

[Figure 4] A perspective view of the plug device in the above power distribution system.

Fig. 5 is a perspective view showing the top plate, ground plate and ground connection terminal in the same plug device.

[Fig. 6] is a perspective view showing the ground connection terminal in the above plug device.

[Fig. 7A] A perspective view of a part of the above plug device.

[Fig. 7B] A perspective view of a part of the above plug device.

First, the outline of the completion of 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 grounding wiring is sometimes electrically connected.

In the connection between the wiring duct and the plug device, if the power supply wiring is electrically connected, and then the grounding wiring is electrically connected, although it takes a shorter time, it will occur that "the grounding wiring has not been electrically connected, and The power supply wiring is electrically connected". In view of the tightening of safety standards in recent years, even if it takes a shorter time, it is still preferable to avoid a state where the grounding wiring is not electrically connected.

Therefore, an object of the present invention is to provide a wiring conduit, a plug device, and a power distribution system. It is easy to electrically connect the grounding wiring before electrically connecting the power supply wiring to the wiring conduit and the plug device.

Here, the wiring duct 100, the plug device 200, and the power distribution system 300 according to the 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 power to, for example, electrical equipment in a facility. The wiring duct 100 is provided in a facility, for example, and constitutes a power supply path. By connecting the plug device 200 to which electrical equipment or the like is connected to an appropriate position in the wiring duct 100, electric power can be supplied to the electrical equipment or the like through the wiring duct 100 and the plug device 200. The power distribution system 300 is installed in, for example, factories and so-called data centers that use many electrical appliances.

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

In the following description, the power distribution system 300 is set to a state as shown in FIG. 1. In the vertical direction, "vertical direction" indicates a direction perpendicular to the horizontal plane, and "downward" indicates downward in the vertical direction, and "upper direction" "Means above. In addition, "longitudinal direction" indicates the longitudinal direction of the wiring duct 100, and "front-rear direction" indicates a direction perpendicular to both the "up-down direction" and the "left-right direction". In the front-rear direction, "back" indicates the side where the ground connection terminal 50 is provided with respect to the connection portion 82 described later, and "front" indicates the side opposite to "rear". Furthermore, in the left-right direction, "left" indicates the side where the power distribution system 300 is viewed from the front, and "right" indicates the right side. In the diagram, arrows indicate "upper" and "lower" in "up and down direction", "front" and "rear" in "front and rear direction", and "left" and "left and right" in "left and right direction" Right". These arrows are marked for convenience only, and have no entity. Moreover, these directions are not intended to limit the installation state of the power distribution system 300.

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

Hereinafter, the electrical connection between the grounding conductor in the wiring duct 100 and the grounding conductor in the plug device 200 may be referred to as ground connection. In addition, 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 FIGS. 1 to 3, the wiring duct 100 includes: a frame 10 that is hollow and electrically conductive; a housing 20 that is held by the frame 10 in the internal space 14 of the frame 10; and a power supply conductor 30 that is inside The space 14 is held by the housing 20. The frame 10 is provided with a ground terminal 11 on a part of its outer surface.

When the wiring duct 100 according to this embodiment is connected to a plug device, a ground connection can be made between the ground terminal 11 and the ground 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 conduit 100 and the plug device before performing power supply connection between the two. In addition, the plug device connected to the wiring duct 100 may be the plug device 200 according to this embodiment, or may be other plug devices.

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 in a state of 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 the present embodiment is connected to a wiring duct, a ground connection can be made between the ground connection terminal 50 and the ground 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. Moreover, the wiring duct connected to the plug device 200 may be the wiring duct 100 according to this embodiment, or may be other wiring ducts.

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

The power distribution system 300 according to the present embodiment can make the ground connection terminal 50 of the plug device 200 and the ground terminal 11 in the outer surface of the frame 10 contact for ground connection when both the wiring duct 100 and the plug device 200 are connected , 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 between the two.

Here, the configurations 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. In addition, the distribution methods of the wiring duct 100, the plug device 200, and the power distribution system 300 described below are single-phase three-wire distribution methods, but may be, for example, three-phase three-wire distribution methods or three-phase four-wire distribution methods. 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 the coating portion 40.

The frame 10 has electrical conductivity, is made of metal, for example, 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. Moreover, 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 the downward-facing surface of the outer surface of the frame 10, and forms an opening below the external space. Therefore, the opening direction of the connection port 12 coincides with the up-down 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 perpendicular to the connection port 12.

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

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 will be referred to as the first power supply 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 by being embedded 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, an S pole of single-phase three-wire wiring, and the second power supply conductor 32 and the third power supply conductor 33 are, for example, R poles and T poles of single-phase three-wire wiring.

The first holding portion 21 has a first through hole 24 that exposes the first power supply conductor 31. The first through hole 24 faces the inner space 14 of the frame 10 and forms an opening below, and faces the connection port 12 with each other. The second holding portion 22 has a second through hole 25 communicating with the second power supply conductor 32, and the third holding portion 23 has a third through hole 26 communicating with the third power supply conductor 33. The second through-hole 25 and the third through-hole 26 face the internal space 14 of the frame 10, and are respectively formed to be open to the front and the rear, and face each other.

The film portion 40 covers the outer surface of the frame 10. The coating portion 40 has electrical insulation and is made of, for example, synthetic resin. In the present embodiment, both the coating portion 40 and the housing 20 are connected to constitute a single member. I can also say that the frame 10 is embedded in a member composed of both the coating portion 40 and the housing 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 its outer surface. The ground terminal 11 is formed in a strip shape along the longitudinal direction of the frame 10 (that is, along the left-right direction). The coating portion 40 has an exposure opening 41 that exposes the ground terminal 11. The exposure opening 41 is the same as the ground terminal 11 and is also formed in a strip shape along the longitudinal direction of the frame 10. I can also say that the part of the outer surface of the frame 10 that is exposed to the exposed outlet 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 that protrudes toward the internal space 14. The surface of the protruding portion exposed in the internal space 14 is the second ground terminal 13. Therefore, the second ground terminal 13 protrudes toward the inner space 14 of the frame 10. In addition, the protruding portion may be formed by bending a part of the frame 10, but even if another configuration is formed, 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, it forms a strip shape along the longitudinal direction of the frame 10. The case 20 has a second exposure port 27 that exposes the second ground terminal 13. The second exposed outlet 27 and the second ground terminal 13 In the same manner, a band shape formed along the long side direction of the frame 10 (that is, along the left-right direction) is also formed. The second ground terminal 13 passes through the second exposure opening 27 and protrudes toward the inner space 14 of the frame 10 more than the inner surface of the housing 20. I can also say that the part of the inner surface of the frame 10 that is exposed to the second exposure opening 27 is the second ground terminal 13.

The ground terminal 11 faces downward, that is, faces 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 to the external space. The ground terminal 11 and the connection port 12 are juxtaposed from the rear to the front, that is, along the direction perpendicular to both the longitudinal 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 generate the power supply connection through the connection port 12 and the ground connection using the ground terminal 11. Furthermore, 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 along the direction perpendicular to both the longitudinal direction of the frame 10 and the opening direction of the connection port 12 in this order.

In addition, the frame 10 in this embodiment has the second ground terminal 13 as described above, but the frame 10 may not be provided with the second ground terminal 13. In addition, as described above, the frame 10 in the present embodiment is provided with the ground terminal 11 only at the rear side relative to the connection port 12. However, the frame 10 may be provided with ground terminals 11 at both the rear side and the front side of the connection port 12.

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

As shown in FIGS. 2 to 4, the plug device 200 includes: a surface 52 that faces a part of the outer surface of the wiring conduit (hereinafter referred to as the opposing surface 52) when connected to the wiring conduit; and a ground connection terminal 50, protruding from the opposite 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 the ground 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 the power supply conductor in the wiring duct to generate a power supply connection. A cable 400 is connected to the plug device 200. The cable 400 has: a ground wire, which is electrically connected to the ground connection terminal 50; and an electric 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 wires.

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

The detailed configuration of the plug device 200 will be further described as follows.

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

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

Hereinafter, the configuration of the ground connection terminal 50 will be described in detail. The main body 81 includes a top plate 812, which constitutes the facing surface 52, and a ground plate 813, which is made of metal and is housed inside the main body 81 (refer to FIG. 2, FIG. 3, and FIG. 5 in particular). The ground plate 813 has a terminal 814 to which a ground line is connected. The ground plate 813 has a connection plate 815 overlapping the bottom surface of the top plate 812, and 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 this 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 its protruding direction (upward), the spring structure 60 applies an elastic force to the ground connection terminal 50 in the protruding direction (upward) of the ground connection terminal 50. Specifically, the plug device 200 includes a ground member 53. The ground member 53 has a ground connection terminal 50 and a spring structure 60. The ground member 53 is composed of a curved strip-shaped metal plate. The ground connection terminal 50 is bent to form a mountain shape, and the top thereof faces the protruding direction (upward) of the ground connection terminal 50. The ground connection terminal 50 has two ends (hereinafter referred to as base ends) that face the direction (downward) opposite to the direction of protrusion (upward). The two base ends are juxtaposed in the left-right direction, that is, the juxtaposition direction of the two base ends is perpendicular to the protruding direction of the ground connection terminal 50. The spring structure 60 includes two leaf springs 61 respectively connected to the two base ends of the ground connection terminal 50. Therefore, the ground connection terminal 50 and the leaf spring 61 are electrically connected. The two leaf springs 61 project from the ground connection terminal 50 toward the left and right, respectively. That is, the two leaf springs 61 respectively protrude from the ground connection terminal 50 in opposite directions, and the protruding direction of each leaf spring 61 is perpendicular to the protruding direction of the ground connection terminal 50. Each plate spring 61 is formed in a long plate shape along its protruding direction, and the thickness direction of the plate spring 61 is along the protruding direction of the ground connection terminal 50. That is, the longitudinal direction of the leaf spring 61 coincides with the left-right direction, and the thickness direction of the leaf spring 61 coincides with the up-down direction.

Each leaf spring 61 has a fixing portion 64 fixed to the plug device 200 and a coupling portion 65 that is connected to the ground connection terminal 50. Each leaf spring 61 is further provided with a portion 66 between both the fixing portion 64 and the coupling portion 65, and this portion 66 extends in a direction crossing the connecting line segment between both the fixing portion 64 and the coupling portion 65. Each of the leaf springs 61 shown in FIG. 6 has a curved shape, and is bent in a direction (front-rear direction) perpendicular to both the longitudinal direction and the thickness direction of the plate spring 61. That is, the leaf spring 61 is formed in a zigzag shape. As described above, because the leaf spring 61 has a curved shape, it can have a portion 66 that extends in a direction that intersects the connecting line segment between both the fixing portion 64 and the coupling portion 65. Thereby, in the leaf spring 61, the actual size from the fixed portion 64 to the coupling portion 65 can be made longer than the size of the connecting line segment between both the fixed 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 connecting plate 815 so as to abut the bottom surface (the surface facing downward) of the connecting plate 815. The ground connection terminal 50 penetrates through the opening 811 and protrudes upward in the direction facing the facing surface 52. The plate spring 61 is fixed to the top plate 812 and the connecting plate 815 with rivets 63 passing through the rivet holes 62. As a result, the ground connection terminal 50 protrudes from the facing surface 52 of the main body 81 in the state of being electrically connected by the spring structure 60 and the ground plate 813.

Since the ground connection terminal 50 has the above 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 moving 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 fixing portion 64 to the coupling portion 65 is longer than the size of the connecting line segment between both the fixing portion 64 and the coupling portion 65. Therefore, it is possible to cause the plate spring 61 to generate a smaller elastic force compared with the size of its appearance. Therefore, the ground connection terminal 50 When pressed, the ground connection terminal 50 can be easily moved, and a small elastic force is appropriately applied to the ground connection terminal 50.

In the present embodiment, the plug device 200 includes a stopper 51 that restricts the movement of the ground connection terminal 50 in the direction opposite to the protruding direction of the ground connection terminal 50 (see FIGS. 2, 3 and 5 ). The so-called restricted movement is intended to limit, for example, the distance (amount of movement) that the ground connection terminal 50 can move. The stop portion 51 is a part of the ground plate 813. The stopper 51 is provided below the ground connection terminal 50 and faces the ground connection terminal 50 with a space therebetween. 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 the direction opposite to its protruding direction is limited to "the ground connection terminal 50 in a state where the ground connection terminal 50 is not pushed" The size of the interval between the stop portions 51 is not more than. If the plug device 200 includes such a stopper 51, even if the ground connection terminal 50 is unintentionally pressed, the stopper 51 can still restrict the movement of the ground connection terminal 50. Therefore, the spring structure 60 can be suppressed from being damaged due to excessive deformation. The amount of movement restricted by the stopper 51 can be set appropriately to the amount that the spring structure 60 will not be damaged due to excessive deformation.

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

The main body portion 81 has a first operating portion 88 and a second operating portion 89 at its upper end (refer to FIGS. 7A and 7B in particular). The first operation unit 88 has 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 has 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 above the first operation portion 88, and a second holder 92 is provided above the second operation portion 89 (see FIGS. 7A and 7B in particular). 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 anchors 91 and 92 can rotate about a rotation axis extending in the vertical direction. By rotating, the first holder 91 can be compared with the first side 91 and both ends of the first holder 91 respectively in a state where they do not protrude from the first side 83 and the second side 84 of the connecting portion 82. 83 switches between the state of protruding rearward and the state of protruding forward of the second side 84. Similarly, the second holder 92 can also rotate, so that it can protrude from the first side 83 compared to both ends in a state where it does not protrude from the first side 83 and the second side 84 of the connecting portion 82. It switches between the rear and the state where the second side 84 protrudes forward compared to the front. The first holder 91 and the second holder 92 have conductivity, and are electrically connected to the ground wire.

The first holder 91 rotates due to the movement of the lever 881 of the first operation part 88. That is, both the second power supply terminal 72 and the first holder 91 move due to the movement of the joystick 881. When the second power supply terminal 72 is located in the connecting 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. The second power supply terminal 72 is located at a position protruding from the first side 83 At this time, both ends of the first holder 91 are in a state of protruding rearward compared to the first side 83 and protruding forward compared to the second side 84. Similarly to the third power supply terminal 73, the second holder 92 rotates due to 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 move due to the movement of the joystick 891. When the third power supply terminal 73 is located in the connection portion 82, the second holder 92 is not in a state of protruding 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, the two ends of the second holder 92 are respectively protruded to the rear compared to the first side 83 and protruded to the second side 84 The state ahead.

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

Next, the 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 above-described wiring duct 100 according to this embodiment and the plug device 200 according to this embodiment.

When the wiring duct 100 is connected to the plug device 200, first of all, for the plug device 200, both the second power supply terminal 72 and the third power supply terminal 73 are arranged at positions 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 connecting portion 82. In this state, the plug device 200 is arranged in alignment with the wiring duct 100 in such a manner that the facing surface 52 and the portion of the outer surface of the wiring duct 100 where the connection port 12 is provided are opposed, and the connection portion 82 and the connection port 12 And the ground connection terminal 50 and the ground terminal 11 are opposed. Furthermore, in the present embodiment, the plug device 200 has the convex portion 54 protruding from the facing surface 52. The wiring duct 100 has a recess 55. The concave portion 55 can be inserted into the convex portion 54 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 arranged upside down, etc., without being 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 work 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 connecting 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, first, 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 then the ground connection terminal 50 is moved downward by being 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 connecting portion 82 is arranged 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. Moreover, 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, 891 are operated to slide, etc., the second power supply terminal 72 protrudes from the first side 83 through the opening 86, and the third power supply terminal 73 passes from the second side through the opening 87 84 stands out. In addition, both ends of the first holder 91 protrude from the rear side compared to the first side surface 83 and protrude from the front side compared to the second side surface 84. Both ends of the second holder 92 also protrude from the rear side compared to the first side 83 and protrude from the front side compared to the second side 84. 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 coming off the wiring duct 100 from. Furthermore, the first holder 91, the second holder 92, and the second ground terminal 13 overlap and come into contact, and are electrically connected. With this, 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 connected to the first power supply conductor 31, the second power supply conductor 32, and the third power supply, respectively. Conductor 33 is used for electrical connection to produce a power connection. In this embodiment, before this power supply connection is made, the ground connection is made by bringing the ground terminal 11 and the ground connection terminal 50 into contact.

In the connection between the wiring conduit 100 and the plug device 200, in order to generate a ground connection before the power supply connection is generated, the present embodiment is as described above, after the ground terminal 11 and the ground connection terminal 50 are first contacted, the first power supply conductor Both 31 and the first power supply terminal 71 come into 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 position of both the ground connection terminal 50 and the first power supply terminal 71 in the plug device 200 Make appropriate settings for the relationship. Furthermore, in the present embodiment, the second power supply terminal 72 and the third power supply terminal 73 can be moved between the state of being accommodated in the connecting portion 82 and the state of protruding from the connecting 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 the second power supply conductor 32 and the third power supply The conductors 33 are electrically connected respectively.

The present embodiment is configured as described above so that the ground connection is generated before the power supply connection is generated. In the present embodiment, the power supply terminal 70 comes into contact with the power supply conductor 30 to generate a power supply connection. Therefore, in this embodiment, in the connection between 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 before this Generate power connection. Therefore, it is easy to make the ground connection The connection terminal 50 contacts the ground terminal 11 to produce a ground connection. In addition, even if the movement amount of the ground connection terminal 50 is small, it is still easy to generate the ground connection before the power supply connection is generated, so that the simplification of the plug device 200 can be achieved. 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 The connection method of the person may be any structure and method.

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

In this embodiment, as described above, the plug device 200 includes the spring structure 60. Therefore, when the ground connection terminal 50 moves due to 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 to between the ground connection terminal 50 and the wiring duct 100 The resulting contact pressure is large. By this, damage to the ground connection terminal 50 will be suppressed.

In addition, in this embodiment, the spring structure 60 is used to suppress the contact pressure, but the contact pressure may be suppressed by other appropriate means.

In this embodiment, the leaf spring 61 has a zigzag shape as described above, and therefore includes a portion 66 that extends in a direction that intersects the connecting line segment between both the fixing portion 64 and the coupling portion 65. However, because the leaf spring 61 is formed into other shapes, it may include a portion 66 extending in a direction crossing the connecting line segment between both the fixing portion 64 and the coupling portion 65. For example, the leaf spring 61 may be formed in an overall shape as if drawing an arc. In addition, the leaf spring 61 may not include the portion 66 extending in the direction crossing the connecting line segment of both the fixing portion 64 and the coupling 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 its protruding direction, elastic force can be applied to the ground connection terminal 50 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 the ground member 53 including the ground connection terminal 50 and the spring structure 60. However, since the ground connection terminal 50 can be elastically deformed, the ground connection terminal 50 may include the spring structure 60.

In this embodiment, the stopper 51 is a part of the ground plate 813, and is provided on the ground connection terminal 50 at a position opposite to the protruding direction of the ground connection terminal 50, so the movement of the ground connection terminal 50 is restricted. However, the stopper portion 51 may have another suitable configuration. In other words, the stopper portion 51 only needs to have an appropriate structure depending on the structure of the ground connection terminal 50 and the spring structure 60. In addition, the plug device 200 may not include the stopper 51.

In this embodiment, as described above, the ground terminal 11 is formed in a strip 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, grounding between the ground terminal 11 and the ground connection terminal 50 can still be performed connection. 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 the present embodiment are not limited to the above description, and various design additions, deletions, or replacements can be made as required, and design changes can be made.

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 internal space 14 and the external space of the frame 10, it can be provided at 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 longitudinal direction of the frame 10, and may be formed with an appropriately shaped opening such as a rectangle. Furthermore, the frame has a plurality of connection ports 12, and these connection ports 12 may be juxtaposed in the longitudinal direction of the frame 10. At this time, the user who performs the connection operation of the plug device 200 can select any one of the connection ports 12 to connect the plug device 200.

Also, the position and shape of the ground terminal 11 are not limited to the above description. As long as the ground terminal 11 is provided on a part of the outer surface of the frame 10, it is easy to make the ground connection before the power supply connection. For example, the ground terminal 11 may not be formed in a strip shape, but may only be provided 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 in parallel, or as long as the direction in which the connection port 12 is formed to open in the external space is the same as the direction in which the ground terminal 11 faces, it is better. At this time, when the plug device is connected to the connection port 12, the grounding conductor in the plug device can be particularly easily contacted with the ground terminal 11.

In addition, the position, number, and structure of the ground connection terminals 50 are not limited to the above description. As long as the ground connection terminal 50 protrudes from the opposite surface 52 of the plug device 200, it is easy to make the connection before the power supply connection 地连接。 Ground 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. In this case, the frame 10 of the wiring duct 100 according to this embodiment may have the ground terminals 11 corresponding to the two ground connection terminals 50, respectively. The number of ground connection terminals 50 may be more than three.

(to sum up)

The wiring duct (100) according to the first aspect includes: a frame (10), which is hollow and has electrical conductivity; a housing (20), which is held by the frame (10) in the internal space (14) of the frame (10); And the power supply conductor (30) 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) and the plug device are connected, 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 conduit (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 internal space (14) and the frame (10) outside The connection port (12) where both spaces are connected. The parallel direction of the ground terminal (11) and the connection port (12) is perpendicular to both the longitudinal direction of the frame (10) and the opening direction of the connection port (12).

According to 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 make 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 strip shape along the long side direction of the frame (10).

According to 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), ground connection can still be performed.

The wiring conduit (100) according to the fourth aspect is in the second or third aspect. In addition to the ground terminal (11), that is, the first ground terminal (11), the frame (10) is in the frame (10) A part of the inner surface is further provided with a second ground terminal (13) protruding toward the inner space (14). The parallel direction of the first ground terminal (11) and the connection port (12) is perpendicular to the longitudinal 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).

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

The wiring conduit (100) according to the fifth aspect is in any 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 part (40) has an exposure opening (41) exposing the ground terminal (11).

According to this configuration, by exposing the ground terminal (11) through the exposed outlet (41), it is easy to perform ground connection, which is an advantage.

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

According to this configuration, when the wiring duct and the plug device (200) are connected, the ground connection terminal (50) can be used for ground connection on the outer surface of the wiring duct, which is an advantage. Therefore, it is easy to make a ground connection between the wiring conduit 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 in a state where the plug device (200) is connected to the wiring duct The power supply conductor is used for electrical connection.

The plug device (200) according to the eighth aspect is further provided with 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.

According to this configuration, even if the ground connection terminal (50) is pressed before the power supply terminal (70) is pressed, the damage of 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 of the sixth to eighth aspects, when the ground connection terminal (50) faces and the ground connection terminal (50) When the direction opposite to the protruding direction is pushed, the spring structure (60) applies an elastic force to the ground connection terminal (50) toward the protruding direction of the ground connection terminal (50).

According to this configuration, when the ground connection terminal (50) is pressed, an appropriate elastic force can be applied to the ground connection terminal (50). Therefore, the ground connection terminal (50) can be brought into contact with the ground conductor in the wiring conduit with a moderate contact pressure to produce a stable electrical connection and suppress 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) is provided with a leaf spring (61), the leaf spring (61) has: a fixing portion (64), which is fixed to The plug device (200); and the coupling part (65) are parts connected to the ground connection terminal (50). The leaf spring (61) further has a portion (66) that extends in a direction that intersects the connecting line segment of the fixing portion (64) and the coupling portion (65).

According to this configuration, in terms of the fixing portion (64) and the coupling portion (65) in the leaf spring (61), the actual size can be made larger than the size in appearance. Thereby, the leaf spring (61) can generate a smaller elastic force compared with the size of its appearance. Therefore, the contact pressure generated between the ground connection terminal (50) and the wiring conduit 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, the stopper (51) restricts the direction of the ground connection terminal (50) and the ground connection The terminal (50) moves in the opposite direction to the protruding 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, whereby damage to the spring structure (60) can be suppressed.

The power distribution system (300) according to the twelfth aspect is provided with a wiring conduit (100) in any one of the first to fifth aspects, and a plug device in any one of the sixth to eleventh aspects (200).

According to this configuration, on the connection between the wiring duct (100) and the plug device (200), it is easy to make the ground terminal (11) and the ground connection terminal (50) before the power supply connection between the wiring duct (100) and the plug device ) Electrical connection.

The power distribution system (300) according to the thirteenth aspect is 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 conduit 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 the following position: from the state where the plug device (200) is not connected to the wiring conduit (100) until it is connected to the wiring conduit (100), here In the process, not only the ground terminal (11) is opposed, but also the ground terminal (11) is contacted before the power supply conductor (30) and the power supply terminal (70) are electrically connected.

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

10: Frame

11: Ground terminal (first ground terminal)

12: connection port

13: Second ground terminal

14: interior space

20: Shell

21~23: The first holding part ~ the third holding part

24~26: First through hole~ Third through hole

30: conductor for power supply

31~33: The first power supply conductor ~ the third power supply conductor

40: Coating part

41: Exposure

81: Body

88: First operation department

881, 891: Joystick

100: wiring conduit

200: plug device

300: power distribution system

400: cable

Claims (6)

A plug device is connected to a wiring duct, the wiring duct is provided with: a frame, which is hollow and has conductivity; a housing, which is held by the frame in an internal space of the frame; and a power supply conductor, in the internal space, The housing is held at a position opposite to the connection port, which connects both the internal space and the external space of the frame; wherein, the frame is provided with a ground terminal on a part of its outer surface; the plug device Contains: a surface facing a part of the outer surface of the wiring conduit in a state of being connected to the wiring conduit; a ground connection terminal protruding from the surface; a connecting portion, in a state of being connected to the wiring conduit, from The connection port is inserted into the internal space; and the power supply terminal is included in the connection portion and electrically connected to the power supply conductor in a state of being connected to the wiring duct; when the plug device is connected to the wiring duct, The ground terminal is electrically connected to the ground connection terminal before the power supply terminal is electrically connected to the power supply conductor. A plug device as claimed in item 1 of the patent application, wherein the contact pressure between the power supply terminal and the wiring conduit is greater than the contact between the ground connection terminal and the wiring conduit when connected to the wiring conduit pressure. For example, the plug device of patent application item 1 or 2 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. A plug device as claimed in item 3 of the patent application, wherein the spring structure includes a plate spring, the plate spring has: a fixing portion fixed to the plug device; and a coupling portion, which is a part connected to the ground connection terminal; And the leaf spring further has a portion extending in a direction crossing the connecting line segment of both the fixing portion and the coupling portion. If the plug device of claim 3 of the patent application scope further includes a stopper, the stopper 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 plug device according to any one of patent application items 1 to 5 and the wiring conduit.

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