TW201838263A - A Structural Electric Power Distribution System - Google Patents

Abstract

An electrical power distribution system for use in providing power for personal, commercial, and industrial uses. The electrical power distribution system may be incorporated in products such as safety barriers, velvet ropes for events, office furniture and home interior trim. The basic component is a conduit section that holds identical electrical connectors at each ends and which interconnect and interlock automatically when rotated to the correct orientation, at which point they have the correct polarity.

Description

Structural Power Distribution System

The technical field of the present disclosure is power distribution, and in particular, the distribution of power for convenient, temporary use.

Traditionally, the building's occupants have been provided with power services by extending power lines from the central junction box across the walls of the building. The power line ends in a wall socket. The number and location of the wall sockets are designed for the intended use of each room and are usually specified by building regulations. However, as more and more appliances are added to the accessory devices of the power demand device, the demand for access to power increases.

In addition, the demand for electricity has been extended beyond the four walls of homes, apartment buildings, and office buildings to meet requirements such as exterior lighting, charging lawn care equipment, cars' batteries, and for use on construction sites, outdoor activities The courtyard restaurant operates temporary and portable electrical installations and appliances, as well as the power needs of passengers in cars, planes, trains and buses. The type of power required has also been expanded and includes AC and DC and different voltage levels.

Outdoors, portable generators can be used to generate power for, for example, construction sites, emergency roadside situations, or outdoor activities, but the transmission of this electricity relies on electrical wires laid on the ground or perhaps raised off the ground to remove it from a temporary pole Hang the wires to another makeshift pole.

There is still a need for new power transmission systems to flexibly meet the growing demand range of consumers of that type of power.

The present disclosure proposes a structural system for transmitting power. The system is based on pairs of universal electrical connectors that are connected to each other by wires and carry inside the conduit section. The conduit sections may be formed as tubes or semi-cylinders coupled to other conduit sections to more easily receive electrical wires, and then these semi-cylinders may be coupled. The electrical connectors inside the catheter are those described in co-pending and co-owned US patent US9614322, entitled "Magnetic Repulsion-based Electrical Connectors", authorized on April 24, 2017, which is incorporated by reference in its entirety. This article. The electrical connector in the present disclosure basically operates as disclosed and described in this related application.

According to this system, two spaced apart electrical connectors are connected to each other by a wire in a manner substantially similar to an extension cord, one electrical connector on one end and the other electrical connector on the other end. Two electrical connectors are positioned inside the same conduit section. The first electrical connector is recessed into the first end of the first conduit section, and the second electrical connector is flush-mounted in the second end of the first conduit section.

When the two duct sections are joined, the second end of the second duct section is inserted into the first end of the first duct section such that the second electrical connector of the second duct section is in the first duct section. The inside and vicinity of the recessed first electrical connector. If the second electrical connector of the second conduit section is oriented towards the first electrical connector of the first conduit section, their first terminal will be automatically aligned with the non-movable terminal using magnetic repulsion, which will result in The mobile terminals move away from each other and move toward the movable terminal. The magnets surrounding each movable terminal are oriented in the same way, so the movable terminal will repel, and the movable terminal and the non-movable terminal will contact. Due to the magnetic force between the movable terminal in the first electrical connector and the non-removable ferromagnetic terminal in the second electrical connector, the correct magnetic terminal of each electrical connector will be pulled and partially held in its corresponding channel And enter the channel of the recessed ferromagnetic immovable terminal, which creates an electrical connection and maintains polarity. Moving the movable terminal into the channel of the recessed non-movable terminal also prevents lateral forces from easily separating the electrical connection terminals. Since the electrical terminals move to each other and lock together, vibrations and small movements due to traffic across the conduit will not cause power interruptions, arcs, and flashing light.

The catheter segments can be standardized and can be obtained in the form of sets of straight and curved or angled catheter segments. Therefore, the catheter section can be selected to form almost any structural configuration. In addition, a universal catheter section is provided in which the first end is rotatable to change direction from one section to another, wherein greater flexibility is required than when an angled catheter section is selected.

A conduit section with a cylindrical internal passage may have an appearance that is not cylindrical and has an appearance that is independent of the electrical connector and internal wiring. The appearance of the duct section can even be decorative, such as a siding strip, or simply used as a decoration for another structure (such as a decorative piece on the edge of a modular panel), and internally carries electrical connectors for use For transmission of electricity. The connected conduit sections can also be used as a stand-alone structure, which has a primary purpose other than delivering electrical current, such as velvet ropes used in activities, but can be conveniently used, for example, to deliver electrical current in a discrete and convenient way for illumination. The catheter section can also be used to transport digital data and information via a carrier.

In addition to providing a structure for the connector and its wiring and as a simple package for building a structured power distribution system, the conduit section can have a superficial, apparently primary purpose. For example, the duct section can be used as a load-bearing support beam in a courtyard. The duct section can form a barrier that indicates the boundary to the public, such as a safety barricade, fence or building barrier, while also conveniently transmitting power to floodlights, door locks, or intercoms.

Disclosed herein are various mechanisms that enable the coupling of two conduit sections, such as a threaded coupling, a sleeve, a locking coupling, a friction fit, or an interference fit. The first conduit section has a slight degree at one end. The enlarged diameter defines a step inside the catheter section so that another catheter section with an unexpanded diameter at the end can be received therein.

The electrical connector may also carry additional electrical contacts or contact pins for establishing an electrical connection between the distal catheter sections using its electrical connector. The contact pins in the remote electrical connector can verify that the electrical contact of the terminals has been properly made in each intermediate electrical connector, or determine whether a disconnection of the connection occurred and where the disconnection occurred. Contacts can also carry different types of power, such as low-voltage direct current, or transmit information in the form of voice or digital data.

Importantly, especially since the duct section network can be complex, the duct section can carry additional electrical wiring for circuits in parallel with the main power wiring to provide the ability to make the management of the network easier, Such as control signals, digital data transmission, identification information and management information. As an example of this capability, wiring that extends in parallel with the main power wiring can carry voice communications or digital programming signals from one end to the other end of the construction site to allow control of the building's security system.

Those skilled in the art of power demand and distribution will recognize and appreciate other aspects of the present disclosure by carefully reading the detailed description accompanying the drawings.

Referring now to the drawings, FIG. 1 is a cross-sectional view of a partial section of two duct sections, namely a first duct section 10 and a second duct section 14, with a second end portion of the second duct section 14 30 is inserted into the first end portion 22 of the first conduit section 10. The first duct section 10 has at its first end 22 a slightly enlarged diameter than the second end section 30 of the second duct section 14.

The first electrical connector 18 is recessed into the first end 22 of the first conduit section 10, and the second electrical connector 26 is flush with the second end 30 of the second conduit section 14.

The first and second electrical connectors 18, 26 are properly oriented in FIG. 1 such that they will be physically and electrically connected to transfer power. The first terminal 34 of the first electrical connector 18 is magnetically attracted to the second terminal 38 of the second electrical connector 26, and the first terminal 42 of the second electrical connector 26 is attracted to the second terminal of the first electrical connector 18. 46. The first terminal 34 of the first electrical connector 18 is physically and electrically connected to the second terminal 38 of the second electrical connector 26 while magnetically attracting the second terminal 38 of the ferromagnetic material, and resists the pulling of the spring 50 Instead, it is partially pulled out of the channel 54 and into the channel 58 of the second terminal 38. Similarly, the first terminal 42 will also be physically and electrically connected to the ferromagnetic second terminal 46. The second terminal 46 is magnetically attracted to the magnetic first terminal 42, and the first terminal 42 resists the pulling of the spring 62. The channel 66 of the first terminal 42 is partially pulled out and enters the channel 70 of the second terminal 46.

When the first electrical connector 18 and the second electrical connector 26 are physically and electrically connected as described above, a current may flow from the first electrical connector 18 to the second electrical connector 26. Similarly, additional conduit sections can be attached in the same manner to distribute current from the conduit section to the conduit section. Moreover, in addition to facilitating the interconnection of electrical connectors, the conduit section can be used for various functions. The catheter section can be made of metal, such as steel, composite, nylon, or other rigid and strong materials.

In order to protect electrical connectors similar to the first and second electrical connectors 18 and 26, and their associated wiring, or where a structural element such as a barrier or guide is required and the structural element can be used With the additional function of transmitting power, providing power over a certain distance, these requirements can be promoted by connecting multiple duct sections in series. Inevitably, for other reasons, a series of such catheter sections may need to avoid obstacles or change direction.

Fig. 2 is similar to Fig. 8 in U.S. Patent No. 9,961,322, issued April 4, 2017, cited above, and these figures show two physically and electrically connected two of the three conduit sections 96, 100, 104. Simplified diagram of the group of electrical connectors 80, 84, 88, 92. The catheter 100 has a first end portion 22 and a second end portion 30, and a first portion 78 and a second portion 82. The first portion 78 is enlarged relative to the second portion 82, thereby defining a step 86 inside the catheter 100. The first portion 78 of the catheter 100 starts from the first end 22 and the second portion 82 starts from the second end 30. The first part 78 and the second part 82 meet at a step 86. The electrical connector 88 is inserted into the first end portion 22 of the first portion 78 and is disposed flush with the step 86 in the second portion 82. The electrical conductor 84 is inserted into the second end portion 30 and is placed flush with the second end portion 30. The wires 108 and 112 carry a current to the electrical connector 80, the current is passed to the electrical connector 84, and then via the wires 116 and 120, the current is passed to the electrical connector 88, which in turn passes it to the electrical connector Connector 92. Electrical connector 92 then passes current on lines 124 and 128. The catheter sections 80, 82, and 84 in FIG. 2 are all straight catheter sections.

In FIG. 3, the first electrical connector 132 is shown physically and electrically connected to the second electrical connector 136. The third electrical connector 140 is physically and electrically connected to the fourth electrical connector 144. The first and second electrical connectors 132, 136 carry current from the first conduit section 148 to the second conduit 152. The third and fourth electrical connectors 140, 144 transfer current between the second conduit 152 and the third conduit 156. The lines 160, 164 carry current to the first electrical connector 132, which passes the current to the second electrical connector 136. The second electrical connector 136 transmits current to the third electrical connector 140 via the lines 168, 172, said third electrical connector 140 transmits current to the fourth electrical connector 144, and current flows from said fourth electrical connector Travel forward via lines 176, 180.

It should be noted that the second duct 152 is curved to provide an angle ø of 15 degrees. Other angles (such as 30 degrees, 45 degrees, 60 degrees, 75 degrees, and 90 degrees) are equally possible, and in addition to the absence of a curved catheter, many options are provided to bypass obstacles and roughly follow a prescribed route to meet The need for flexibility.

Figures 4, 5, 6 and 7 show alternative or additional ways to connect the catheter to guide in a different direction than that shown in Figure 3. Different views of the universal catheter section 200 that can be inserted between any two catheter sections (such as the catheter section shown in FIGS. 2 and 3) in place of the catheter section are shown in these figures. As best seen in the top, cross-sectional views in Figs. 4, 5, 6, and 7, the universal conduit section 200 has a housing 204 having a cover 208 and Base 212. A bolt shaft 216 attached to the base portion 212 and having a threaded end portion 220 extends through a hole 224 in the cover portion 208 where a gasket 228 and a nut 232 are used to secure the cover portion 208 to the base portion 212. A sloped gasket 234 disposed in the groove 210 seals the cover portion 208 to the base portion 212. Loosening the nut 232 allows the cover 208 to rotate relative to the base 212.

Extending radially from the base 212 is a lower tube 236 fixed to a first adapter 240 that is consistent with the outer surface of the base 212 and the vertically extending cover 208 so that when the cover 208 is coupled to the base 212时 接 盖 部 208。 Hour joint cover 208.

Similarly, extending radially from the cover portion 208 is an upper tube 244 fixed to the cover portion 208.

The cover portion 208 and the base portion 212 each have a thickness or vertical dimension that matches the diameters of the lower tube 236 and the upper tube 244, respectively, and is consistent with the diameter of the catheter section to which they are to be attached. For example, if the catheter section is shaped as a catheter section 100 as shown in FIG. 2, that is, one end has an enlarged diameter, it will receive a down tube 236 that can be inserted into the catheter as shown The larger diameter of the end of the section 100. The lower tube 236 thus replicates the nominal diameter of the catheter section. Moreover, the lower tube 236 has a first electrical connector 252 that is mounted flush with the end of the lower tube 236 instead of being recessed, so the first electrical connector 252 can be directly connected to the electrical in the conduit section 100 of FIG. Connector 88.

The upper tube 244 has an enlarged diameter compared to the diameter of the lower tube 236. Thus, the upper tube 240 may receive a catheter section similar to the catheter section 104 of FIG. 2. The upper tube 240 carries a second electrical connector 256. Upon receiving the catheter section 104, the second electrical connector 256 will be able to connect with the electrical connector 92 in the same manner as the electrical connector 88 is shown in FIG. 2 as being connected with the electrical connector 92.

A universal catheter section 200 with a lower tube 236 and an upper tube 244 can be inserted between two catheter sections and used as a replacement catheter. In place, the relative angle between the lower tube 236 and the second tube 244 can be set by loosening the nut 232 and rotating the cover 208 to a desired angle with respect to the base 212, and then tightening the nut 232. FIG. 7 illustrates an angle change from the original direction of the lower tube 236 to the original direction of the upper duct 244.

As best seen in Figs. 4 and 5, inside the lower tube 236 is a first electrical connector 252; inside the second tube 244, the first electrical connector 252 is connected to the second electrical connector via a pair of wires 260, 264 256 electrical connections. The wires 260, 264 are wound around the bolt shaft 216. The cover 208 rotates relative to the base 212 to allow flexibility of the leads 260, 264.

Figures 8, 9 and 10 show an electrical connector 280 with additional features. In addition to the first terminal 284 and the second terminal 288, there are two sets of pins, namely a first pin group 296 and a second pin group 304, but the number of pins and pin groups may be different. The first pin 292 from the first pin group 296 may have a corresponding second pin 300 in the second pin group 304 that it can contact. The first and second pin groups 296, 304 may be assigned other functions in addition to a function of transmitting a current allocated to the terminals 284 and 288. For example, the first pin 292 and the second pin 300 may transmit digital data for control purposes or transmit audible information. Alternatively, the first pin 292 and the second pin 300 may carry a 5 volt DC potential for low voltage applications.

As shown in FIG. 9, the first pin 292 may be attached to the terminal 284 on the electrical connector 312 using the follower 294 (the first terminal 284 is removable), and will be in the electrical connector 312 to The correct orientation rises when engaged with the second electrical terminal 280, so that the pin 292 is in contact with the first fixed pin 316. The second pin 300 on the terminal 320 (which is also a movable terminal) of the electrical connector 312 will contact the second fixed pin 316 at the same time. When the terminals 284, 320 appear correspondingly from the electrical connector 280 and its opposite electrical connector 312, the first pin 292 and the second fixed pin 316 are associated with the movement of their respective terminals 284, 320, and therefore Appears on the opposite top surface of the electrical connectors 280 and 312 where they contact each other.

FIG. 10 illustrates the distribution of AC current 324 through the first and second pin groups 296, 304 shown in FIG. 8 and a series of conduit sections 322 that provide additional functionality. The additional functions selected for illustration are digital data 326 and small DC voltage 328.

The catheter sections can be connected using any of several techniques that can be quickly and easily used when connecting two catheter sections. Figures 11A-11D show several such techniques, including the ones mainly used in the previous description, that is, a friction fit connection with a reduced diameter on the first end 330 of the first conduit section 332, making it Easily fits into the first end portion 334 of the standard-sized second conduit section 336, as shown in FIG. 11A.

FIG. 11B shows a modified catheter configuration with the ends of two catheter segments. In particular, the first conduit section 340 has an external thread 342 formed on one end to be threaded to an internal thread on the end 344 of the second conduit section 346.

FIG. 11C shows a connector 350 for coupling the first and second conduit sections 352, 356, both conduit sections carrying external threads on their respective ends 354, 358.

FIG. 11D shows the first and second conduit sections 366, 370 in FIG. 11C. The catheter sections 366, 370 may each have bayonet threads 368, 372. The connector 364 is simpler than the connector 350 such that it receives bayonet threads of the first and second conduit sections 366, 370 to prevent disengagement in the case of a 180-degree rotation.

FIG. 12 illustrates the use of the current distribution system, which is used with a crown molding 380 attached to a wall 384 and a ceiling 388, where the duct section 392 has an electrical connection A connector 396, which is positioned inside the catheter section 396 and is supported on a pad 398, where the catheter section 392 is invisible as it passes through the room. After the building structure is completed, but when additional power is needed, this configuration is one of the many possible ways to discretely distribute power inside the building.

10‧‧‧ the first duct section

14‧‧‧second duct section

18‧‧‧First electrical connector

22‧‧‧first end

26‧‧‧Second electrical connector

30‧‧‧ second end

34‧‧‧First terminal

38‧‧‧Second Terminal

42‧‧‧First terminal

46‧‧‧Second Terminal

50‧‧‧ spring

54‧‧‧channel

58‧‧‧channel

62‧‧‧Spring

66‧‧‧channel

70‧‧‧channel

78‧‧‧ Part I

80‧‧‧electrical connector

82‧‧‧ Part Two

84‧‧‧electrical connector

86‧‧‧ steps

88‧‧‧electrical connector

92‧‧‧electrical connector

96‧‧‧ duct section

100‧‧‧ duct section

104‧‧‧ duct section

108‧‧‧Wire

112‧‧‧Wire

116‧‧‧Wire

120‧‧‧Wire

124‧‧‧line

128‧‧‧line

132‧‧‧First electrical connector

136‧‧‧Second electrical connector

140‧‧‧Third electrical connector

144‧‧‧Fourth electrical connector

148‧‧‧First duct section

152‧‧‧Second catheter

156‧‧‧Third catheter

160‧‧‧line

164‧‧‧line

168‧‧‧line

172‧‧‧line

176‧‧‧line

180‧‧‧line

200‧‧‧General catheter section

204‧‧‧shell

208‧‧‧ Cover

210‧‧‧ groove

212‧‧‧Base

216‧‧‧bolt shaft

220‧‧‧Threaded end

224‧‧‧hole

228‧‧‧ cushion

232‧‧‧ Nut

234‧‧‧ pad with slope

236‧‧‧ down tube

240‧‧‧First adapter

244‧‧‧ Upper tube

252‧‧‧First electrical connector

256‧‧‧Second electrical connector

260‧‧‧Wire

264‧‧‧Wire

280‧‧‧electrical connector

284‧‧‧First terminal

288‧‧‧Second Terminal

292‧‧‧first pin

296‧‧‧first pin group

300‧‧‧ second pin

304‧‧‧Second pin group

322‧‧‧ duct section

324‧‧‧AC current

326‧‧‧ digital data

328‧‧‧small DC voltage

330‧‧‧first end

332‧‧‧First duct section

334‧‧‧first end

336‧‧‧ duct section

340‧‧‧first duct section

342‧‧‧external thread

344‧‧‧ tip

346‧‧‧Second Duct Section

350‧‧‧ connector

352‧‧‧First duct section

356‧‧‧Second Duct Section

354‧‧‧End

358‧‧‧End

364‧‧‧Connector

366‧‧‧First duct section

370‧‧‧Second Duct Section

380‧‧‧ Trim

384‧‧‧ wall

388‧‧‧ceiling

392‧‧‧ duct section

396‧‧‧electrical connector

398‧‧‧ spacer

In the drawings,

FIG. 1 is a side cross-sectional view of two conduit sections carrying an electrical connector therein;

FIG. 2 is a side cross-sectional view of a partial section of three conduit sections that cause electricity to be joined together by two pairs of electrical conduit sections of the type shown in FIG. 1;

3 is a side cross-sectional view of a partial section of three duct sections, the three duct sections having electrical connectors but not showing the details of the electrical connectors, and the central duct section is formed with a 15 degree bend;

FIG. 4 shows a top, cross-sectional view of a universal catheter section having electrical connectors in two of its partial sections according to an aspect of the present disclosure; FIG.

5 is an external view of a universal catheter section arranged to accommodate acute angle changes in direction according to one aspect of the present disclosure;

6 is an exploded, perspective view of a universal catheter section according to an aspect of the present disclosure;

7 is a detailed, cross-sectional view at a joint between a cover portion and a base portion of a universal connector having a sloped gasket, according to one aspect of the present disclosure;

8 is a top view of an electrical connector showing pins for additional functions according to an aspect of the present disclosure;

9 is a cross-sectional view of a pair of engaged electrical connectors each having a pin that follows its movable terminal to make contact with a pin of another electrical connector;

10 is a schematic diagram showing examples of pins in an electrical connector for digital data, a DC voltage source, and an AC current;

11A-11D illustrate four ways of connecting catheter sections together according to an aspect of the present disclosure;

FIG. 12 is a cross-sectional view of the power distribution system of the present structure contained behind the crown molding.

Claims (19)

A power distribution system includes: a first electrical connector having a movable terminal including a first magnet and a non-movable terminal including a first ferromagnet; a second electrical connector, the first electrical connector The two electrical connectors have a movable terminal including a second magnet and a non-movable terminal including a second ferromagnet, the movable terminal of the first electrical connector is movable relative to the first electrical connector, and The movable terminal of the second electrical connector is movable relative to the second electrical connector; electrical wiring, the electrical wiring is from the movable terminal of the first electrical connector and the A mobile terminal extends to the movable terminal and the non-movable terminal of the second electrical connector; and a conduit section that houses the first electrical connector and the second electrical connector And the electrical wiring. The power distribution system according to item 1 of the patent application scope, wherein the conduit section has a first end portion and a second end portion, and a first portion and a second portion, and the first portion is enlarged relative to the second portion , Thereby defining a step inside the conduit section, and wherein the first portion starts from the first end and the second portion starts from the second end, and the first portion and The second portion meets at the step, and wherein the first electrical connector is inserted into the first end portion and is disposed flush with the step in the second portion, and the second portion An electrical connector is inserted into the second end and is positioned flush with the second end. The power distribution system of claim 1, further comprising a connector operable to connect the conduit section to a second conduit section. The power distribution system according to item 1 of the patent application scope, wherein the conduit section has a cylindrical inner portion and a non-cylindrical outer portion. The power distribution system according to item 1 of the patent application scope, wherein the conduit section has a cylindrical interior and a decorative exterior. The power distribution system according to item 1 of the patent application scope, wherein the conduit section is flexible. The power distribution system according to item 1 of the patent application scope, wherein the duct section is made of steel. The power distribution system according to item 1 of the patent application scope, wherein the duct section is curved. The power distribution system according to item 1 of the patent application scope, wherein the conduit section is a universal conduit section having a housing having an interior and including a cover and a base, the The cover and the base are rotatable relative to each other; a shaft that extends inside the housing and is fixed relative to the base and extends through a hole in the cover; The internally communicating lower tube; the internally communicating upper tube; the first electrical connector in the lower tube; the second electrical connector in the upper tube; The electrical wiring extends from the first electrical connector in the lower tube into the interior of the housing, surrounds the shaft and leaves the upper tube to reach the second electrical connector; and A device for attaching the cover to the base. The power distribution system according to item 9 of the scope of patent application, wherein the base includes a groove formed therein and further includes a gasket fitted in the groove. The power distribution system according to item 10 of the patent application scope, wherein the pad has a slope. The power distribution system according to item 1 of the scope of patent application, wherein the first electrical connector carries a first conductive pin, and the second electrical connector carries a second conductive pin, and the power The distribution system also includes a line extending from the first pin to the second pin. The power distribution system according to item 12 of the patent application scope, wherein the line carries a DC voltage. The power distribution system according to item 12 of the patent application scope, wherein the line carries digital data. A power distribution system includes: (a) a first duct having a first end portion and a second end portion; (b) a second duct having a first end portion and a second end portion, wherein The second end is coupled to the first end of the second conduit; (c) a first electrical connector in the second end of the first conduit; (d) in the A second electrical connector in the first end of the second conduit; (e) a first movable terminal in the first electrical connector, the first movable terminal carrying a first magnet; (F) a first non-removable terminal in the first electrical connector, the first non-removable terminal carrying a first ferromagnet; (g) a second movable terminal in the second electrical connector The second movable terminal carries a second magnet, wherein the first ferromagnet of the first immovable terminal is attracted by the second magnet of the second movable terminal, and the second The movable terminal is moved into electrical contact with the first non-movable terminal of the first electrical connector; and h) a second immovable terminal in the second electrical connector, the second immovable terminal carrying a ferromagnet, wherein the first magnet of the first movable terminal is attracted to the first The second ferromagnet of two immovable terminals, the first movable terminal of the first electrical connector is moved into electrical contact with the second immovable terminal of the second electrical connector. The power distribution system according to item 15 of the scope of patent application, wherein the first end portion of the second conduit has an inner diameter larger than the outer diameter of the second end portion of the first conduit, And wherein the first end portion of the second conduit is inserted into the second end portion of the first conduit. The power distribution system according to item 15 of the scope of patent application, wherein the second end portion of the second conduit has a third electrical connector, and the third electrical connector has a third movable terminal and a third Do not move the terminal. The power distribution system according to item 17 of the scope of patent application, further comprising a first electrical conductor extending from the second movable terminal to the third immovable terminal, and extending from the second immovable terminal A second electrical conductor to the third movable terminal. According to the power distribution system according to item 15 of the scope of patent application, wherein the second end portion of the second conduit has an inner diameter larger than the outer diameter of the first end portion of the third conduit, And wherein the first end portion of the third conduit is inserted into the second end portion of the second conduit.