WO2022255222A1 - Plug and duct system - Google Patents

Abstract

This plug (1) is provided with a housing (11), a plug blade (12), and a conversion structure (3). The plug blade (12) is held by the housing (11), and moves, in accordance with rotation of the housing (11), between a first position electrically and mechanically connected to an electrically conductive rail conductor (22) of a wiring duct (2), and a second position separated from the rail conductor (22). The conversion structure (3) stores a first holding force to maintain a state in which the plug blade (12) is in contact with the rail conductor (22), and converts the stored first holding force into a rotational force of the housing (11). When the housing (11) is rotated in a first direction moving the plug blade (12) from the first position to the second position, the conversion structure (3) stores the first holding force until the angle of rotation of the housing (11) reaches a first angle, and when the angle of rotation exceeds the first angle, the conversion structure (3) converts the stored first holding force into a rotational force of the housing (11) in the first direction.

Description

plug and duct system

The present invention relates to a plug that receives DC power supplied from a wiring duct and a duct system.

Patent Document 1 discloses a wiring duct system. This wiring duct system includes a wiring duct and a plug. The wiring duct has a power supply terminal electrically connected to the DC power supply. The plug has a power receiving contact for contact conduction with the power supply terminal.

JP 2014-116174 A

The present invention provides a plug and a duct system that can easily suppress arcing.

A plug according to one aspect of the present invention includes a housing, a blade, and a conversion structure. The blade is held by the housing between a first position where it is electrically and mechanically connected to a conductive rail conductor of a wiring duct and a second position where it is separated from the rail conductor. Move according to the rotation of the body. The converting structure accumulates a first holding force for maintaining the contact state of the blade with the rail conductor, and converts the accumulated first holding force into a rotational force of the housing. In the conversion structure, when the housing is rotated in a first direction for moving the blade from the first position to the second position, the rotation angle of the housing reaches the first angle. When one holding force is accumulated and the rotation angle exceeds the first angle, the accumulated first holding force is converted into the rotational force of the housing in the first direction.

A plug according to one aspect of the present invention includes a housing, a blade, and a conversion structure. The blade is held by the housing between a first position where it is electrically and mechanically connected to a conductive rail conductor of a wiring duct and a second position where it is separated from the rail conductor. Move according to the rotation of the body. The conversion structure accumulates a second holding force for maintaining the state in which the blade is not in contact with the rail conductor, and converts the accumulated second holding force into a rotational force of the housing. In the conversion structure, when the housing is rotated in a second direction for moving the blade from the second position to the first position, the rotation angle of the housing reaches the second angle. 2 holding forces are accumulated, and when the rotation angle exceeds the second angle, the accumulated second holding force is converted into the rotational force of the housing in the second direction.

A duct system according to an aspect of the present invention includes the plug and the wiring duct that supplies DC power to the plug while the plug is connected.

The plug and duct system of the present invention have the advantage of being easy to suppress arcing.

FIG. 1A is an explanatory diagram of an operation when the plug according to Embodiment 1 is removed from the wiring duct. FIG. 1B is an explanatory diagram of the operation when removing the plug according to Embodiment 1 from the wiring duct. FIG. 1C is an explanatory diagram of the operation when removing the plug according to Embodiment 1 from the wiring duct. FIG. 1D is an explanatory diagram of the operation when the plug according to Embodiment 1 is removed from the wiring duct. FIG. 2 is a perspective view showing an outline of the wiring duct according to Embodiment 1. FIG. FIG. 3A is an explanatory diagram of the operation when removing the plug from the wiring duct according to the second embodiment. FIG. 3B is an explanatory diagram of the operation when removing the plug from the wiring duct according to the second embodiment. FIG. 3C is an explanatory diagram of the operation when removing the plug from the wiring duct according to the second embodiment. FIG. 3D is an explanatory diagram of the operation when removing the plug from the wiring duct according to the second embodiment. FIG. 4A is an explanatory diagram of the operation when attaching the plug according to Embodiment 2 to the wiring duct. FIG. 4B is an explanatory diagram of the operation when attaching the plug according to Embodiment 2 to the wiring duct. FIG. 4C is an explanatory diagram of the operation when attaching the plug according to Embodiment 2 to the wiring duct. FIG. 4D is an explanatory diagram of the operation when attaching the plug according to Embodiment 2 to the wiring duct. FIG. 5 is a perspective view showing an outline of a plug and a wiring duct according to Embodiment 3. FIG. FIG. 6 is a perspective view showing a plug according to Embodiment 3. FIG. FIG. 7A is an explanatory diagram of the operation when removing the plug from the wiring duct according to the third embodiment. FIG. 7B is an explanatory diagram of the operation when removing the plug from the wiring duct according to the third embodiment. FIG. 8A is an explanatory diagram of the operation when attaching the plug according to Embodiment 3 to the wiring duct. FIG. 8B is an explanatory diagram of the operation when attaching the plug according to Embodiment 3 to the wiring duct.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. All of the embodiments described below represent specific examples of the present invention. Therefore, the numerical values, shapes, materials, components, arrangement positions and connection forms of components, steps, order of steps, etc. shown in the following embodiments are examples, and are not intended to limit the present invention.

It should be noted that each figure is a schematic diagram and is not necessarily strictly illustrated. Moreover, in each figure, the same code|symbol is attached|subjected to the substantially same structure, and the overlapping description is abbreviate|omitted or simplified.

(Embodiment 1)
[Constitution]
A duct system 100 including a plug 1 according to Embodiment 1 will be described with reference to FIGS. 1A to 1D and 2. FIG. 1A to 1D are explanatory diagrams of operations when removing the plug 1 according to the first embodiment from the wiring duct 2, respectively. FIG. 2 is a perspective view showing an outline of the wiring duct 2 according to Embodiment 1. FIG. In each of FIGS. 1A to 1D, (a) is a plan view of the rail conductor 22 (described later) and the plug 1 viewed from the ceiling side (above), and (b) is a side view of the rail conductor 22 and the plug 1. 1 is a plan view seen from . In the following description, it is assumed that the ceiling side in the vertical direction is the upper side, and the floor side is the lower side.

The duct system 100 includes a plug 1 and a wiring duct 2 that supplies DC power to the plug 1 while the plug 1 is connected. The duct system 100 is used in a so-called DC (Direct Current) distribution network. The DC distribution network is configured to include one or more wiring ducts 2 and is supplied with DC power from a DC power supply. Each wiring duct 2 includes a pair of electric lines, a positive feed line connected to the positive electrode on the output side of the DC power supply, and a negative feed line connected to the negative electrode on the output side of the DC power supply.

The plug 1 is configured to be attachable to the wiring duct 2, and in the state of being attached to the wiring duct 2, supplies DC power to a device coupled to the plug 1 via a cable. Further, the plug 1, while attached to the wiring duct 2, supplies DC power to a power adapter connected to the plug 1 via a cable. The power adapter converts DC power supplied from the plug 1 into predetermined DC power, and supplies the converted DC power to the device. In any case, the plug 1 is configured to directly or indirectly supply DC power to the device while connected to the wiring duct 2 .

Devices are lighting fixtures as an example, but they may also be speakers, cameras, sensors, or USB PDs (Power Delivery). In other words, the device may be a device other than a lighting fixture as long as it is driven by receiving DC power.

The wiring duct 2 is a so-called duct rail to which one or more plugs 1 can be attached. That is, in the wiring duct 2, one or more plugs 1 can be freely arranged. In Embodiment 1, the wiring duct 2 is arranged on the ceiling of the facility, but may be arranged on the floor, wall, furniture, or the like of the facility.

The wiring duct 2 has a long duct body 21 and a pair of rail conductors 22 . One surface (upper surface) of the duct body 21 that is fixed to the ceiling or the like and one surface (lower surface) on the opposite side are provided so that the plug blade 12, the first base portion 13, and the second base portion 14 of the plug 1, which will be described later, pass through. is provided along the longitudinal direction of the duct body 21 .

The pair of rail conductors 22 are formed in a long plate shape along the longitudinal direction of the duct body 21, and are made of metal and have electrical conductivity. One rail conductor 22 of the pair of rail conductors 22 constitutes a positive feed line connected to the positive electrode on the output side of the DC power supply, and the other rail conductor 22 is connected to the negative electrode on the output side of the DC power supply. Negative power supply line is configured.

The plug 1 includes a housing 11, a blade 12, a first base 13, a second base 14, and a torsion coil spring 15, as shown in FIGS. 1A to 1D. .

The housing 11 is made of, for example, a resin material and has a rectangular parallelepiped shape. Components for electrically connecting the blade 12 and the cable are housed inside the housing 11 . Further, the housing 11 is a part that a user holds by hand when attaching the plug 1 to the wiring duct 2 or when removing the plug 1 from the wiring duct 2 .

The blade 12 is made of metal and has a plate shape. In Embodiment 1, a pair of blades 12 are provided, one blade 12 is attached to one rail conductor 22 of the pair of rail conductors 22, and the other blade 12 is attached to one of the pair of rail conductors 22. It corresponds to the other rail conductor 22 . For example, as shown in FIG. 1A, when the plug 1 is attached to the wiring duct 2, the pair of blades 12 are arranged along a direction intersecting (here, perpendicular to) the longitudinal direction of the housing 11. in position.

The blade 12 is held by the housing 11 and moves between the first position and the second position as the housing 11 rotates. The term “rotation” here refers to clockwise or counterclockwise rotation about an imaginary axis parallel to the thickness direction of the housing 11 and passing through the center of the housing 11 . Note that the position of the center of rotation (virtual axis) may be off the center of the housing 11 .

The first position is the position where the blade 12 is electrically and mechanically connected to the conductive rail conductor 22 of the wiring duct 2 . The second position is the position where the blade 12 is separated from the rail conductor 22 . Specifically, at the first position, as shown in FIG. 1A, the pair of blades 12 are electrically connected to the rail conductors 22 by contacting the pair of rail conductors 22, respectively, and the pair of rail conductors are connected to each other. 22 and mechanically connected to the rail conductor 22 . In the second position, as shown in FIG. 1D, the pair of blades 12 are both separated from the pair of rail conductors 22 and are not in contact with the pair of rail conductors 22 .

In Embodiment 1, the pair of blades 12 are held by the housing 11 via the first base portion 13 and the second base portion 14 . The first base portion 13 has a columnar shape and is provided so as to be in contact with one surface (upper surface) of the housing 11 . The second platform 14 has a rectangular parallelepiped shape and is provided so as to be in contact with one surface (upper surface) of the first platform 13 . Both the first base portion 13 and the second base portion 14 are dimensioned so that they can be inserted into the opening 210 of the duct body 21 .

A pair of blades 12 are fixed to the second base portion 14 so as to protrude from the side surface in the radial direction. The first base portion 13 and the second base portion 14 are both configured to rotate in the same direction as the housing 11 rotates. That is, when the housing 11 rotates, the first base portion 13 and the second base portion 14 rotate accordingly, and the pair of blades 12 fixed to the second base portion 14 also rotate. In Embodiment 1, the first platform 13 and the second platform 14 are not fixed to the housing 11, but are accommodated inside the housing 11, the first platform 13, and the second platform 14. The torsion coil spring 15 is configured to rotate together with the housing 11 .

The torsion coil spring 15 has one end fixed to the housing 11 and the other end fixed to the second base 14 via the first base 13 . Therefore, when the housing 11 rotates, the force received when the housing 11 rotates is transmitted to the first base portion 13 and the second base portion 14 via the torsion coil spring 15, thereby The first platform 13 and the second platform 14 also rotate. The torsion coil spring 15 is compressed by receiving a force that narrows the distance between the one end and the other end in plan view in a state where either one of the one end and the other end is fixed, and accumulates elastic energy. do. In addition, the torsion coil spring 15 is elongated by receiving a force that widens the distance between the one end and the other end in a plan view in a state in which either one of the one end and the other end is fixed, and elastic energy is applied. accumulate.

In Embodiment 1, the first base portion 13, the second base portion 14, and the torsion coil spring 15 constitute the conversion structure 3. The conversion structure 3 accumulates a first holding force P11 that attempts to maintain the contact state of the blade 12 with the rail conductor 22, and converts the accumulated first holding force P11 into a rotational force P21 of the housing 11. be. Here, the torsion coil spring 15 is an elastic body that compresses or expands according to the rotation of the housing 11, and is a type of coil spring. That is, the conversion structure 3 includes an elastic body (torsion coil spring 15) that compresses or expands as the housing 11 rotates. Also, the elastic body is a coil spring (torsion coil spring 15).

In particular, in Embodiment 1, the conversion structure 3 is configured such that when the housing 11 is rotated in the first direction D1 (here, counterclockwise) for moving the blade 12 from the first position to the second position, the housing 11 is rotated. The first holding force P11 is accumulated until the rotation angle θ1 of the body 11 reaches the first angle θ11. Then, when the rotation angle θ1 of the housing 11 exceeds the first angle θ11, the conversion structure 3 converts the accumulated first holding force P11 into a rotational force P21 of the housing 11 in the first direction D1. That is, in the first embodiment, in the process of rotating the housing 11 in the first direction D1 in order to remove the plug 1 from the wiring duct 2, the conversion structure 3 accumulates the first holding force P11 and the accumulated second holding force P11. 1 The holding force P11 is used to increase the rotational force P21 of the housing 11 .

Here, the rotation angle θ1 of the housing 11 refers to the angle formed by the longitudinal direction of the housing 11 and the reference line parallel to the longitudinal direction of the rail conductor 22 . For example, FIG. 1A shows a state where the rotation angle θ1 of the housing 11 is 90 degrees, and FIG. 1B shows a state where the rotation angle θ1 of the housing 11 is less than the first angle θ11. FIG. 1C shows a state where the rotation angle θ1 of the housing 11 is the first angle θ11, and FIG. 1D shows a state where the rotation angle θ1 of the housing 11 is 0 degree.

The process of removing the plug 1 from the wiring duct 2 will be described below with reference to FIGS. 1A to 1D. FIG. 1A shows a state where the plug 1 is attached to the wiring duct 2 and the pair of blades 12 are electrically and mechanically connected to the pair of rail conductors 22, respectively. In the state shown in FIG. 1A, the torsion coil spring 15 receives no particular external force.

As shown in FIG. 1B, when the housing 11 of the plug 1 is rotated in the first direction D1 (here, counterclockwise), the first base portion 13 and the second base portion 14 are rotated as the housing 11 rotates. , and the pair of blades 12 also begin to rotate in the first direction D1. However, as shown in FIG. 1B, when the rotation angle θ1 of the housing 11 is less than the first angle θ11, when the pair of blades 12 are in contact with the pair of rail conductors 22, the pair of blades Friction acts between 12 and the pair of rail conductors 22 . For this reason, one end of the torsion coil spring 15 fixed to the housing 11 rotates together with the housing 11, whereas the other end of the torsion coil spring 15 fixed to the second base portion 14 rotates together with the housing 11. The ends do not rotate. As a result, the distance between both ends of the torsion coil spring 15 is narrowed in plan view, and elastic energy is accumulated in the torsion coil spring 15 . In other words, the torsion coil spring 15 accumulates a first holding force P11 that tries to keep the pair of blades 12 in contact with the pair of rail conductors 22 .

As described above, in the state shown in FIG. 1B , the rotational force P21 in the first direction D1 applied by the user to the housing 11 to rotate the housing 11 in the first direction D1 and the second rotation force resisting the rotational force P21. A first holding force P11 is generated in a direction opposite to the first direction D1.

As shown in FIG. 1C, when the casing 11 of the plug 1 is further rotated in the first direction D1 and the rotation angle θ1 of the casing 11 reaches the first angle θ11, the pair of plug blades 12 and the pair of rail conductors 22 Friction between the pair of blades 12 and the pair of rail conductors 22 is lost. Therefore, one end of the torsion coil spring 15 that is fixed to the second base portion 14 is freely movable, so that the elastic energy accumulated in the torsion coil spring 15 is released, and the torsion is performed. The coil spring 15 attempts to return to its original state. That is, the first holding force P11 accumulated in the torsion coil spring 15 is converted into a rotational force P21 for rotating the housing 11 in the first direction D1.

Therefore, the first base portion 13, the second base portion 14, and the pair of blades 12 are vigorously rotated in the first direction D1 together with the housing 11, thereby bringing the pair of blades 12 into the state shown in FIG. 1D. The plug 1 can be removed from the wiring duct 2.

[advantage]
Before describing the advantages of the plug 1 according to Embodiment 1, problems that may occur when the plug 1 is removed from the wiring duct 2 will be described below. In a DC power distribution network, for example, arcing can occur due to disconnection or partial disconnection of a pair of rail conductors 22. In addition to this, arcing can also occur when the plug 1 is removed from the wiring duct 2. That is, when the wiring duct 2 is in a live line state (that is, when a current is flowing through the pair of rail conductors 22), when the plug 1 is removed from the wiring duct 2, the pair of blades 12 and the pair of blades 12 are removed in the process. , and the rail conductor 22 are close to each other. If this situation continues, there is a problem that an arc may occur between the blade 12 and the rail conductor 22 .

Therefore, the plug 1 according to Embodiment 1 is provided with the conversion structure 3 as described above to solve the above problem. That is, in the process of removing the plug 1 from the wiring duct 2, by converting the first holding force P11 accumulated in the conversion structure 3 into the rotational force P21, the housing 11 and the pair of blades 12 can be vigorously rotated. Therefore, in the plug 1 according to Embodiment 1, in the process of removing the plug 1 from the wiring duct 2, the period during which the blade 12 approaches the rail conductor 22 can be shortened as much as possible. There is an advantage that it is easy to suppress the occurrence of

(Embodiment 2)
[Constitution]
A duct system 100A including a plug 1A according to Embodiment 2 will be described below with reference to FIGS. 3A to 3D and 4A to 4D. 3A to 3D are explanatory diagrams of operations when the plug 1A according to the second embodiment is removed from the wiring duct 2. FIG. 4A to 4D are explanatory diagrams of the operation when the plug 1A according to Embodiment 2 is attached to the wiring duct 2. FIG. 3A to 3D, (a) is a plan view of the rail conductor 22 and the plug 1A viewed from the ceiling side (upper side), and (b) is a plan view of the rail conductor 22 and the plug 1A viewed from the side. It is a diagram. 4A to 4D are plan views of the rail conductor 22 and the plug 1A viewed from the ceiling side (above).

The plug 1A according to Embodiment 2 is different from the plug 1 according to Embodiment 1 in that it further includes a temporary holding portion 16, and the temporary holding portion 16 is a component of the conversion structure 3A. In the following, description of points common to the plug 1 according to the first embodiment will be omitted.

The temporary holding portion 16 is separate from the housing 11, the first table portion 13, and the second table portion 14, and has a pair of contact bodies 161 and a connecting portion 162. Each of the pair of contact bodies 161 is formed in a rectangular parallelepiped shape and positioned at almost the same height as the second base portion 14 . Also, both of the pair of contact bodies 161 are dimensioned so as to be able to be inserted into the opening 210 of the duct body 21 , similarly to the second base portion 14 . The connecting portion 162 is provided so as to be sandwiched between the housing 11 and the first base portion 13 and connected to each of the pair of contact bodies 161 .

When inserted into the opening 210 of the duct body 21 , one contact member 161 of the pair of contact members 161 contacts one rail conductor 22 of the pair of rail conductors 22 and the other contact member 161 contacts the rail conductor 22 . contacts the other rail conductor 22 of the pair of rail conductors 22 . Therefore, even if the housing 11 rotates, the pair of contact members 161 are restricted from rotating by the pair of rail conductors 22 as stoppers. . Also, the distance between the pair of contact bodies 161 is almost the same as or slightly shorter than the distance between the tips of the pair of blades 12 .

In Embodiment 2, the first base portion 13, the second base portion 14, the torsion coil spring 15, and the temporary holding portion 16 constitute the conversion structure 3A. The conversion structure 3A accumulates a second holding force P12 that attempts to maintain the state in which the blade 12 is not in contact with the rail conductor 22, and converts the accumulated second holding force P12 into a rotational force P22 of the housing 11. Structure.

In particular, in the second embodiment, the conversion structure 3A rotates the housing 11 in the second direction D2 (here, clockwise) for moving the blade 12 from the second position to the first position. The second holding force P12 is accumulated until the rotation angle .theta.2 of 11 reaches the second angle .theta.21. Then, when the rotation angle θ2 of the housing 11 exceeds the second angle θ21, the conversion structure 3A converts the accumulated first holding force P12 into a rotation force P22 of the housing 11 in the second direction D2. That is, in the second embodiment, the conversion structure 3A accumulates the second holding force P12 in the process of rotating the housing 11 in the second direction D2 in order to attach the plug 1 to the wiring duct 2. 2 The holding force P12 is used to increase the rotational force P22 of the housing 11 .

Here, the rotation angle θ2 of the housing 11 is the angle formed by the longitudinal direction of the housing 11 and the reference line that is parallel to the longitudinal direction of the rail conductor 22 (here, perpendicular to the longitudinal direction). Say. For example, FIG. 4A shows a state where the rotation angle θ2 of the housing 11 is 0 degree, and FIG. 4B shows a state where the rotation angle θ2 of the housing 11 is less than the second angle θ21. 4C shows a state where the rotation angle θ2 of the housing 11 is the second angle θ21, and FIG. 4D shows a state where the rotation angle θ2 of the housing 11 is 90 degrees.

Furthermore, in the second embodiment, similarly to the conversion structure 3 of the first embodiment, the conversion structure 3A accumulates a first holding force P11 that tries to keep the blade 12 in contact with the rail conductor 22, This structure converts the accumulated first holding force P11 into a rotational force P21 of the housing 11 . That is, when the conversion structure 3A rotates the housing 11 in the first direction D1 (here, counterclockwise) for moving the blade 12 from the first position to the second position, the rotation angle θ1 of the housing 11 is reaches the first angle θ11, the first holding force P11 is accumulated. Then, when the rotation angle θ1 of the housing 11 exceeds the first angle θ11, the conversion structure 3A converts the accumulated first holding force P11 into a rotational force P21 of the housing 11 in the first direction D1. That is, in the second embodiment, the conversion structure 3A accumulates the first holding force P11 in the process of rotating the housing 11 in the first direction D1 in order to remove the plug 1 from the wiring duct 2. 1 The holding force P11 is used to increase the rotational force P21 of the housing 11 .

3A to 3D show the process of removing the plug 1A from the wiring duct 2, but since it is the same as the first embodiment, the explanation is omitted here. That is, in the description of the process of removing the plug 1 from the wiring duct 2 in Embodiment 1, "plug 1" is replaced with "plug 1A", "Fig. 1A", "Fig. 1B", "Fig. 1C", and "Fig. 1D". 3A, 3B, 3C, and 3D, respectively. In the process of removing the plug 1A from the wiring duct 2, the temporary holding portion 16 does not particularly function as the conversion structure 3A.

The process of attaching the plug 1A to the wiring duct 2 will be described below with reference to FIGS. 4A to 4D. FIG. 4A shows a state in which the first base portion 13, the second base portion 14, and the temporary holding portion 16 are inserted into the opening 210 of the duct body 21. FIG. In the state shown in FIG. 4A, the torsion coil spring 15 receives no particular external force.

As shown in FIG. 4B, when the housing 11 of the plug 1A is rotated in the second direction D2 (here, clockwise), the rotation of the housing 11 causes the first base portion 13, the second base portion 14, and the pair of blades 12 also begin to rotate in the second direction D2. However, as shown in FIG. 4B, when the rotation angle θ2 of the housing 11 is less than the second angle θ21, the pair of blades 12 are in contact with the pair of contact bodies 161. Friction acts between the blade 12 and the pair of contact bodies 161 . For this reason, one end of the torsion coil spring 15 fixed to the housing 11 rotates together with the housing 11, whereas the other end of the torsion coil spring 15 fixed to the second base portion 14 rotates together with the housing 11. The ends do not rotate. As a result, the distance between both ends of the torsion coil spring 15 is increased in plan view, and elastic energy is accumulated in the torsion coil spring 15 . In other words, the torsion coil spring 15 accumulates the second holding force P12 to keep the pair of blades 12 out of contact with the pair of rail conductors 22 .

As described above, in the state shown in FIG. 4B , the rotational force P22 in the second direction D2 that the user applies to the housing 11 to rotate the housing 11 in the second direction D2 and the second rotation force that resists the rotational force P22. A second holding force P12 is generated in a direction opposite to the direction D2.

As shown in FIG. 4C, the housing 11 of the plug 1A is further rotated in the second direction D2, and when the rotation angle θ2 of the housing 11 reaches the second angle θ21, the pair of blades 12 move toward the pair of contact bodies 161. Friction between the pair of blades 12 and the pair of contact bodies 161 is lost. Therefore, one end of the torsion coil spring 15 that is fixed to the second base portion 14 is freely movable, so that the elastic energy accumulated in the torsion coil spring 15 is released, and the torsion is performed. The coil spring 15 attempts to return to its original state. That is, the second holding force P12 accumulated in the torsion coil spring 15 is converted into a rotational force P22 for rotating the housing 11 in the second direction D2.

Therefore, the first base portion 13, the second base portion 14, and the pair of blades 12 are vigorously rotated together with the housing 11 in the second direction D2, thereby bringing the pair of blades 12 into the state shown in FIG. 4D. . That is, the plug 1A is attached to the wiring duct 2 by electrically and mechanically connecting the pair of blades 12 to the pair of rail conductors 22 .

[advantage]
Before describing the advantages of the plug 1A according to the second embodiment, problems that may occur when the plug 1A is attached to the wiring duct 2 will be described below. When attaching the plug 1A to the wiring duct 2, if the attachment of the plug 1A is not smoothly performed, the pair of blades 12 are in contact with the pair of rail conductors 22, and the pair of blades 12 are in contact with the pair of rail conductors 22. A so-called chattering may occur in which the state of being separated from the rail conductor 22 is alternately repeated in a short period of time. During the chattering period, when the wiring duct 2 is in a live state (that is, when a current flows through the pair of rail conductors 22), the pair of blades 12 and the pair of rail conductors 22 Arcing may occur due to the close proximity situation.

Arc generation due to such chattering can occur not only in DC power distribution networks but also in AC power distribution networks. However, in an AC power distribution network, since the current flowing through the pair of rail conductors 22 is an alternating current, there is a moment when the current becomes zero. Specifically, the duration of the arc is less than half the period of the alternating current. On the other hand, in a DC power distribution network, since the current flowing through the pair of rail conductors 22 is a direct current, the current does not become zero, and the duration of the arc due to chattering tends to increase.

Therefore, the plug 1A according to the second embodiment is provided with the conversion structure 3A as described above to solve the above problem. That is, in the process of attaching the plug 1A to the wiring duct 2, by converting the second holding force P12 accumulated in the conversion structure 3A into the rotational force P22, the housing 11 and the pair of blades 12 can be vigorously rotated. Therefore, in the plug 1A according to the second embodiment, in the process of attaching the plug 1A to the wiring duct 2, it is possible to suppress the occurrence of chattering between the blade 12 and the rail conductor 22, resulting in arc generation. There is an advantage that it is easy to suppress the occurrence.

Further, in the plug 1A according to the second embodiment, similarly to the plug 1 according to the first embodiment, even in the process of removing the plug 1A from the wiring duct 2, the first holding force P11 accumulated in the conversion structure 3A is rotated. By converting the force into the force P21, it is possible to rotate the housing 11 and the pair of blades 12 more vigorously than when the conversion structure 3A is not provided. Therefore, in the plug 1A according to Embodiment 2, even in the process of removing the plug 1 from the wiring duct 2, the period during which the blade 12 approaches the rail conductor 22 can be shortened as much as possible. There is an advantage that it is easy to suppress arc generation.

(Embodiment 3)
[Constitution]
A duct system 100B including a plug 1B according to Embodiment 3 will be described below with reference to FIGS. 5 and 6. FIG. FIG. 5 is a perspective view showing an outline of the plug 1B and wiring duct 2 according to the third embodiment. FIG. 6 is a perspective view showing a plug 1B according to Embodiment 3. FIG.

In the plug 1B according to Embodiment 3, the first base portion 13A and the second base portion 14A are fixed to the housing 11 and are configured so as not to rotate independently of the housing 11. It is different from the plug 1 according to the form 1 of . Further, the plug 1B according to the third embodiment is different from the plug 1 according to the first embodiment in that the rotation suppressing portion 4 and the coil spring 5 are provided instead of the torsion coil spring 15. As shown in FIG. In the following, description of points common to the plug 1 according to the first embodiment will be omitted.

The rotation suppressing part 4 has a function of suppressing the rotation of the casing 11 of the plug 1B without user's operation when the plug 1B is attached to the wiring duct 2 . The rotation suppressing portion 4 includes a slide member 41 and a coil spring 5 .

The slide member 41 is flat and forms part of the side wall of the housing 11 . The slide member 41 is configured to be vertically movable between a regulating position where it fits in the opening 210 of the duct body 21 and a release position away from the opening 210 . One end (upper end) of the slide member 41 is integrally formed with a protrusion 42 that protrudes upward. When the slide member 41 is in the restricting position, the projection 42 fits into the opening 210 of the duct body 21, thereby suppressing rotation of the housing 11 of the plug 1B. The surface of the slide member 41 is provided with a plurality of protrusions 411 that function as non-slip so that the user can easily operate the slide member 41 .

A first taper 421 and a second taper 422 are provided at one end (upper end) of the protrusion 42 . The first taper 421 is inclined downward in the first direction D1 (counterclockwise here, rightward in FIG. 6). The second taper 422 is inclined downward in the second direction D2 (clockwise here, leftward in FIG. 6).

The coil spring 5 is accommodated inside the slide member 41 , and has one end (upper end) fixed to the housing 11 and the other end (lower end) fixed to the slide member 41 . As a result, the slide member 41 is urged upward (in the direction from the release position toward the restriction position) by the coil spring 5 .

In Embodiment 3, the protrusion 42 and the coil spring 5 constitute the conversion structure 3B. That is, the conversion structure 3B includes an elastic body (coil spring 5) that compresses or expands according to the rotation of the housing 11. As shown in FIG. Also, the elastic body is the coil spring 5 . The conversion structure 3B accumulates a second holding force P12 that attempts to keep the blade 12 out of contact with the rail conductor 22, and converts the accumulated second holding force P12 into a rotational force P22 of the housing 11. Structure.

In particular, in the third embodiment, the conversion structure 3B is configured such that when the housing 11 is rotated in the second direction D2 (here, clockwise) for moving the blade 12 from the second position to the first position, the housing The second holding force P12 is accumulated until the rotation angle .theta.2 of 11 reaches the second angle .theta.21. Then, when the rotation angle θ2 of the housing 11 exceeds the second angle θ21, the conversion structure 3B converts the accumulated first holding force P12 into a rotation force P22 of the housing 11 in the second direction D2. That is, in the third embodiment, the conversion structure 3B accumulates the second holding force P12 in the process of rotating the housing 11 in the second direction D2 in order to attach the plug 1 to the wiring duct 2. 2 The holding force P12 is used to increase the rotational force P22 of the housing 11 .

Furthermore, in Embodiment 3, similarly to the conversion structure 3 of Embodiment 1, the conversion structure 3B accumulates a first holding force P11 that attempts to maintain the state in which the blade 12 is in contact with the rail conductor 22, This structure converts the accumulated first holding force P11 into a rotational force P21 of the housing 11 . That is, when the conversion structure 3B rotates the housing 11 in the first direction D1 (here, counterclockwise) for moving the blade 12 from the first position to the second position, the rotation angle θ1 of the housing 11 is reaches the first angle θ11, the first holding force P11 is accumulated. Then, when the rotation angle θ1 of the housing 11 exceeds the first angle θ11, the conversion structure 3B converts the accumulated first holding force P11 into a rotational force P21 of the housing 11 in the first direction D1. That is, in the third embodiment, in the process of rotating the housing 11 in the first direction D1 in order to remove the plug 1 from the wiring duct 2, the conversion structure 3B accumulates the first holding force P11, 1 The holding force P11 is used to increase the rotational force P21 of the housing 11 .

The process of removing the plug 1B from the wiring duct 2 will be described below with reference to FIGS. 7A and 7B. 7A and 7B are explanatory diagrams of operations when removing the plug 1B according to the third embodiment from the wiring duct 2, respectively.

First, when the user rotates the housing 11 of the plug 1B in the first direction D1 (here, counterclockwise) while moving the slide member 41 to the release position, the housing 11 rotates to move the first base. The portion 13A, the second base portion 14A, and the pair of blades 12 also begin to rotate in the first direction D1. Then, as shown in FIG. 7A, the duct end portion 211 positioned below the duct body 21 comes into contact with the first taper 421 of the projecting portion 42, so that the first taper 421 is pushed by the duct end portion 211 and slides. Member 41 moves downward. As a result, the coil spring 5 is compressed and elastic energy is accumulated in the coil spring 5 . In other words, the coil spring 5 accumulates a first holding force P11 that tries to keep the pair of blades 12 in contact with the pair of rail conductors 22 .

As described above, in the state shown in FIG. 7A , the rotational force P21 in the first direction D1 applied by the user to the housing 11 to rotate the housing 11 in the first direction D1 and the second rotation force resisting the rotational force P21. A first holding force P11 is generated in a direction opposite to the first direction D1.

After that, the housing 11 of the plug 1B is further rotated in the first direction D1, and when the rotation angle θ1 of the housing 11 reaches the first angle θ11, the duct end 211 reaches the boundary between the first taper 421 and the second taper 422. , and the duct end 211 contacts the second taper 422 as shown in FIG. 7B. Then, since the slide member 41 is no longer pushed by the duct end portion 211, the elastic energy accumulated in the coil spring 5 is released, and the coil spring 5 attempts to return to its original state. As a result, a force is generated by the slide member 41 to push the duct end portion 211, and this component force becomes the rotational force P21. That is, the first holding force P11 accumulated in the coil spring 5 is converted into a rotational force P21 for rotating the housing 11 in the first direction D1.

Therefore, when the first base portion 13A, the second base portion 14A, and the pair of blades 12 rotate vigorously in the first direction D1 together with the housing 11, the pair of blades 12 move the opening 210 of the duct body 21. The plug 1B can be removed from the wiring duct 2 by moving to a passable position.

Next, the process of attaching the plug 1B to the wiring duct 2 will be described using FIGS. 8A and 8B. 8A and 8B are explanatory diagrams of the operation when attaching the plug 1B according to Embodiment 3 to the wiring duct 2, respectively.

First, the first base portion 13A, the second base portion 14A, and the pair of blades 12 are inserted into the opening 210 of the duct body 21, and the housing 11 of the plug 1B is turned in the second direction D2 (here, clockwise). When the housing 11 is rotated, the first base portion 13A, the second base portion 14A, and the pair of blades 12 also start to rotate in the second direction D2. Then, as shown in FIG. 8A, the duct end portion 211 of the duct body 21 comes into contact with the second taper 422 of the protruding portion 42, so that the second taper 422 is pushed by the duct end portion 211, and the slide member 41 moves downward. move to As a result, the coil spring 5 is compressed and elastic energy is accumulated in the coil spring 5 . In other words, the coil spring 5 accumulates the second holding force P12 that tries to keep the pair of blades 12 out of contact with the pair of rail conductors 22 .

As described above, in the state shown in FIG. 8A , the rotational force P22 in the second direction D2 that the user applies to the housing 11 to rotate the housing 11 in the second direction D2, and the second rotation force that resists the rotational force P22. A second holding force P12 is generated in a direction opposite to the direction D2.

After that, the casing 11 of the plug 1B is further rotated in the second direction D2, and when the rotation angle θ2 of the casing 11 reaches the second angle θ21, the duct end 211 reaches the boundary between the first taper 421 and the second taper 422. , and the duct end 211 contacts the first taper 421 as shown in FIG. 8B. Then, since the slide member 41 is no longer pushed by the duct end portion 211, the elastic energy accumulated in the coil spring 5 is released, and the coil spring 5 attempts to return to its original state. As a result, the slide member 41 generates a force that pushes the duct end portion 211, and this component force becomes the rotational force P22. That is, the second holding force P12 accumulated in the coil spring 5 is converted into a rotational force P22 for rotating the housing 11 in the second direction D2.

Therefore, when the first base portion 13A, the second base portion 14A, and the pair of blades 12 rotate vigorously in the second direction D2 together with the housing 11, the pair of blades 12 are electrically connected to the pair of rail conductors 22. are physically and mechanically connected, and the plug 1A is attached to the wiring duct 2.

Note that the first angle θ11 and the second angle θ21 described above can be appropriately set according to the position of the apex that is the boundary between the first taper 421 and the second taper 422 in the projecting portion 42 .

[advantage]
As described above, in the plug 1B according to the third embodiment, as with the plug 1A according to the second embodiment, in the process of attaching the plug 1B to the wiring duct 2, the second holding force P12 accumulated in the conversion structure 3B is converted into the rotational force P22, it is possible to rotate the housing 11 and the pair of blades 12 more vigorously than when the conversion structure 3B is not provided. Therefore, in the plug 1B according to the third embodiment, in the process of attaching the plug 1B to the wiring duct 2, chattering between the blade 12 and the rail conductor 22 can be suppressed, resulting in arc generation. There is an advantage that it is easy to suppress the occurrence.

Further, in the plug 1B according to the third embodiment, similarly to the plugs 1 and 1A according to the first and second embodiments, even in the process of removing the plug 1B from the wiring duct 2, the first retention accumulated in the conversion structure 3B is removed. By converting the force P11 into the rotational force P21, it is possible to rotate the housing 11 and the pair of blades 12 more vigorously than when the conversion structure 3B is not provided. Therefore, in the plug 1B according to Embodiment 3, even in the process of removing the plug 1B from the wiring duct 2, the period during which the blade 12 comes close to the rail conductor 22 can be shortened as much as possible. There is an advantage that it is easy to suppress arc generation.

(Modification)
Although Embodiments 1 to 3 have been described above, the present invention is not limited to Embodiments 1 to 3 above. Modifications of the first to third embodiments are listed below. Modifications described below may be combined as appropriate.

In Embodiments 1 and 2 above, the elastic body included in the conversion structures 3 and 3A is the torsion coil spring 15, but it is not limited to this. For example, the elastic body included in the conversion structures 3, 3A may be silicone rubber instead of the torsion coil spring. In this case, for example, in the plugs 1 and 1A, the silicone rubber is compressed while the pair of plug blades 12 are in contact with the pair of rail conductors 22, accumulating elastic energy (first holding force P11), It is sufficient if the blade 12 is configured to convert the accumulated elastic energy into the rotational force P21 when the blade 12 separates from the pair of rail conductors 22 . In this case, for example, in the plug 1A, in a state in which the pair of blades 12 are in contact with the pair of contact bodies, the silicone rubber is compressed to accumulate elastic energy (second holding force P12), 12 is separated from the pair of contact bodies 161, the stored elastic energy is converted into the rotational force P22.

Similarly, in Embodiment 3 above, the elastic body included in the conversion structure 3B may be silicone rubber instead of the coil spring 5. In this case, for example, in the process of removing the plug 1B from the wiring duct 2, while the duct end 211 is in contact with the first taper 421, the silicone rubber is compressed to accumulate elastic energy (first holding force P11), It is sufficient if the duct end portion 211 is configured to convert the accumulated elastic energy into the rotational force P21 when the duct end portion 211 begins to contact the second taper 422 . In this case, for example, in the process of attaching the plug 1B to the wiring duct 2, the silicone rubber is compressed while the duct end 211 is in contact with the second taper 422, and elastic energy (second holding force P12) is accumulated. However, when the duct end portion 211 starts contacting the first taper 421, the accumulated elastic energy may be converted into the rotational force P22.

In each of the above embodiments, the first direction D1, that is, the direction in which the housing 11 is rotated when removing the plug 1 from the wiring duct 2 is counterclockwise, but it may be clockwise. Similarly, in each of the above embodiments, the second direction D2, that is, the direction in which the housing 11 is rotated when attaching the plug 1 to the wiring duct 2 is clockwise, but it may be counterclockwise.

In addition, it can be realized by applying various modifications to each embodiment that a person skilled in the art can think of, or by arbitrarily combining the constituent elements and functions of each embodiment without departing from the spirit of the present invention. Forms are also included in the present invention.

(summary)
As described above, the plugs 1, 1A, 1B comprise a housing 11, a blade 12 and conversion structures 3, 3A, 3B. The blade 12 is held by the housing 11 between a first position where it is electrically and mechanically connected to the conductive rail conductor 22 of the wiring duct 2 and a second position where it is separated from the rail conductor 22. It moves according to the rotation of the housing 11 . The conversion structures 3, 3A, and 3B accumulate a first holding force P11 that attempts to maintain the state in which the blade 12 is in contact with the rail conductor 22, and apply the accumulated first holding force P11 to the rotational force P21 of the housing 11. Convert. The conversion structures 3, 3A, and 3B change the rotation angle θ1 of the housing 11 to the first angle θ11 when the housing 11 is rotated in the first direction D1 that moves the blade 12 from the first position to the second position. A first holding force P11 is accumulated until the first holding force P11 is reached, and when the rotation angle θ1 exceeds the first angle θ11, the accumulated first holding force P11 is converted into a rotational force P21 of the housing 11 in the first direction D1.

According to such plugs 1, 1A, 1B, in the process of removing the plugs 1, 1A, 1B from the wiring duct 2, the period during which the blade 12 approaches the rail conductor 22 can be minimized. , and as a result, there is an advantage that it is easy to suppress arc generation.

Also, for example, the plugs 1A, 1B include a housing 11, a blade 12, and conversion structures 3A, 3B. The blade 12 is held by the housing 11 between a first position where it is electrically and mechanically connected to the conductive rail conductor 22 of the wiring duct 2 and a second position where it is separated from the rail conductor 22. It moves according to the rotation of the housing 11 . The conversion structures 3A and 3B accumulate a second holding force P12 that attempts to maintain the state in which the blade 12 is not in contact with the rail conductor 22, and apply the accumulated second holding force P12 to the rotational force P22 of the housing 11. Convert. When the housing 11 is rotated in the second direction D2 for moving the blade 12 from the second position to the first position, the conversion structures 3A and 3B are configured such that the rotation angle θ2 of the housing 11 reaches the second angle θ21. accumulates a second holding force P12, and when the rotation angle θ2 exceeds the second angle θ21, converts the accumulated second holding force P12 into a rotational force P22 of the housing 11 in the second direction D2.

According to such plugs 1A and 1B, in the process of attaching the plugs 1A and 1B to the wiring duct 2, the occurrence of chattering between the blade 12 and the rail conductor 22 can be suppressed, resulting in arc generation. There is an advantage that it is easy to suppress the occurrence.

Further, for example, in the plugs 1A and 1B, the conversion structures 3A and 3B accumulate the first holding force P11 that attempts to maintain the state in which the blade 12 is in contact with the rail conductor 22, and apply the accumulated first holding force P11. It further has a structure for converting the rotational force P<b>21 of the housing 11 . When the housing 11 is rotated in the first direction D1 in which the blade 12 is moved from the first position to the second position, the conversion structures 3A and 3B are arranged in the first holding position until the rotation angle θ1 reaches the first angle θ11. When the force P11 is accumulated and the rotation angle θ1 exceeds the first angle θ11, the accumulated first holding force P11 is converted into the rotation force P21 of the housing 11 in the first direction D1.

According to such plugs 1A and 1B, in the process of removing the plugs 1A and 1B from the wiring duct 2, the period during which the blade 12 comes close to the rail conductor 22 can be shortened as much as possible. There is an advantage that it is easy to suppress the occurrence of

Further, for example, in the plugs 1, 1A, 1B, the conversion structures 3, 3A, 3B include elastic bodies that compress or expand according to the rotation of the housing 11.

Such plugs 1, 1A, and 1B have an advantage that it is easy to realize a structure for accumulating a holding force (first holding force P11 or second holding force P12) with a simple configuration.

Also, for example, in the plugs 1, 1A, and 1B, the elastic body is a coil spring (torsion coil spring 15 or coil spring 5).

Such plugs 1, 1A, and 1B have an advantage that it is easy to realize a structure for accumulating a holding force (first holding force P11 or second holding force P12) with a simple configuration.

Further, for example, the duct systems 100, 100A, and 100B include the plug 1 described above and a wiring duct 2 that supplies DC power to the plug 1 while the plug 1 is connected.

According to such duct systems 100, 100A, 100B, in the process of removing the plugs 1, 1A, 1B from the wiring duct 2, the period during which the blade 12 approaches the rail conductor 22 can be minimized. As a result, there is an advantage that arc generation can be easily suppressed.

1 plug 11 housing 12 blade 15 torsion coil spring (coil spring)
2 Wiring duct 22 Rail conductor 3, 3A, 3B Conversion structure 5 Coil spring 100, 100A, 100B Duct system D1 First direction D2 Second direction P11 First holding force P12 Second holding force P21, P22 Rotational force θ1, θ2 Rotation Angle θ11 First angle θ21 Second angle

Claims (6)

1. a housing;
   In response to rotation of the housing between a first position held by the housing and electrically and mechanically connected to the conductive rail conductors of the wiring duct and a second position away from the rail conductors. a stopper blade that moves by
   a converting structure for accumulating a first holding force for maintaining the contact state of the blade with the rail conductor and converting the accumulated first holding force into a rotational force of the housing;
   In the conversion structure, when the housing is rotated in a first direction for moving the blade from the first position to the second position, the rotation angle of the housing reaches the first angle. one holding force is accumulated, and when the rotation angle exceeds the first angle, the accumulated first holding force is converted into the rotational force of the housing in the first direction;
   plug.
2. a housing;
   In response to rotation of the housing between a first position held by the housing and electrically and mechanically connected to the conductive rail conductors of the wiring duct and a second position away from the rail conductors. a stopper blade that moves by
   a conversion structure for accumulating a second holding force for maintaining a state in which the blade is not in contact with the rail conductor, and converting the accumulated second holding force into a rotational force of the housing;
   In the conversion structure, when the housing is rotated in a second direction for moving the blade from the second position to the first position, the rotation angle of the housing reaches the second angle. 2 accumulating a holding force, and when the rotation angle exceeds the second angle, converting the accumulated second holding force into the rotational force of the housing in the second direction;
   plug.
3. The conversion structure further has a structure for accumulating a first holding force for maintaining the state in which the blade is in contact with the rail conductor, and for converting the accumulated first holding force into a rotational force of the housing. death,
   In the conversion structure, when the housing is rotated in a first direction for moving the blade from the first position to the second position, the first holding force is applied until the rotation angle reaches the first angle. is accumulated, and when the rotation angle exceeds a first angle, converting the accumulated first holding force into the rotational force of the housing in the first direction;
   3. A plug according to claim 2.
4. The conversion structure includes an elastic body that compresses or expands according to rotation of the housing,
   The plug according to any one of claims 1-3.
5. The elastic body is a coil spring,
   5. A plug according to claim 4.
6. a plug according to any one of claims 1 to 3;
   the wiring duct for supplying DC power to the plug while the plug is connected;
   duct system.

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