JP3099693B2 - Modular outlet for cable with leak detection function and cable connection structure using the modular outlet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a modular outlet for connecting a cable having a water leak detecting function to another cable (whether or not the cable has a water leak detecting function). .

[0002]

2. Description of the Related Art In recent years, in addition to electrical equipment such as lighting equipment, computer equipment,
Various information and communication devices such as a facsimile, a modem, and telephone equipment have been provided (for example, see Japanese Patent Laid-Open No. 5-1).
99633). In such intelligent buildings, water leaks can cause significant damage, so by installing a water leak detection system in addition to the above facilities, early detection and early treatment of water leaks are being attempted. .

By the way, in such a building, an information communication cable is wired over a wide area with the installation of various information and communication devices, and furthermore, a pre-wiring (corresponding to a situation to be used in the future). As expected). Therefore, if a leak detection function is provided to these cables, a large leak detection area can be secured with a smaller number of cables as compared with a case where a leak detection system is constructed using a dedicated cable. .

Accordingly, Japanese Utility Model Laid-Open Publication No. 62-26817 discloses an undercarpet cable in which a cable body is sandwiched from above and below by a top shield and a bottom shield. The top shield is provided with a water leakage detection line via an insulating layer on the upper surface. In addition, JP
Japanese Patent Publication No. 187842 discloses a cable in which a pair of water leakage detection lines are vertically twisted and integrally twisted with a cable core, and the outside thereof is covered with a sheath.

According to the cables disclosed in these publications, when there is no moisture around the cable, the insulation between the two leak detection lines is ensured. If moisture is present, this moisture becomes an electric medium and the insulation between the two leak detection lines decreases, so that
By monitoring the insulation, the occurrence of water leakage can be detected promptly.

[0006]

After wiring, the cable with a water leak detection function as described above checks whether the water leak detection function works normally, that is, whether there is a failure such as disconnection of the water leak detection line. You need to test. Here, conventionally, in order to perform the above test, it is necessary to draw both water leakage detection lines from the cable, etc., and to perform a simulated conduction between these water leakage detection destinations using a special conduction means. Therefore, the improvement is desired.

In general, the cable with a water leakage detection function is laid under the floor in advance, and at the start of actual use, a normal cable on the floor connected to terminal equipment and the like and the water leakage detection function under the floor are used. It is necessary to connect the cable with the cable, but if a modular outlet that can connect these cables with one touch is installed at the same time as the advance wiring of the cable with the water leak detection function, the work at the start of use will be easier.

In view of such circumstances, the present invention has a simple structure, a work for connecting a cable with a water leak detection function to another cable, and a continuity test between both water leak detection conductors in the cable with a water leak detection function. It is an object of the present invention to provide a modular outlet for a cable with a water leak detection function and a cable connection structure using the modular outlet, which can simultaneously simplify both.

[0009]

As a means for solving the above-mentioned problems, the present invention provides a first cable having a conductor and a modular plug attached to a tip thereof, and a pair of water leakage devices in parallel with the conductor. A modular outlet for a cable with a water leakage detection function for connecting to a second cable that is a cable with a water leakage detection function provided with a detection conductor,
A mounting portion to which the modular plug can be mounted;
A connection portion to which a lead wire of the cable can be connected, and the first plug in a state where the modular plug is mounted on the mounting portion.
And a pair of connection terminals to which a water leakage detection conductor of the second cable can be connected, respectively, and an outlet member configured to conduct the conductor of the second cable and the conductor of the second cable connected to the connection portion. And a continuity changeover switch that switches between a state in which both connection terminals are conducted and a state in which the connection terminals are insulated, and a connection part of the outlet member of the modular outlet. This is a cable connection structure in which a conductor is connected, and both water leakage detection conductors of the second cable are connected to both connection terminals of the conduction switch.

[0010] According to this structure, the conductors of both cables can be connected to each other simply by mounting the modular plug on the mounting portion of the outlet member. Further, by simply operating the conduction changeover switch, the water leakage detection conductors connected to the two connection terminals can be simulated electrically, and in this state, there is no failure such as disconnection of the water leakage detection conductors. On the other hand, by operating the conduction switch from this state to insulate the two water leakage detection conductors from each other, it is possible to detect water leakage around the second cable.

[0011] The present invention also provides a first cable having a water leakage detecting function in which a first cable having a conducting wire and a pair of water leakage detecting conductors are arranged in parallel with the conducting wire, and a modular plug is attached to a tip end. A modular outlet for a cable with a water leakage detection function for connecting the cable to the first cable, the modular outlet having a mounting portion to which the modular plug can be mounted, and a connecting portion to which a conductor of the first cable can be connected. With the modular plug attached to the second
An outlet member configured to conduct the conductive wire of the first cable and the conductive wire of the first cable connected to the connection portion, and an end of the water leakage detection conductor of the second cable can be inserted and removed. A water leakage detection conductor insertion part, and a conduction switch that is switched between a state in which both water leakage detection conductors inserted into the water leakage detection conductor insertion part are in a conductive state and an insulated state are provided. A cable connection in which the conductor of the first cable is connected to the connection portion of the outlet member of the modular outlet, and both ends of the water leakage detection conductor of the second cable are led out of the modular plug to the outside. Structure.

Also in this structure, the work of merely attaching the modular plug to the mounting portion of the outlet member,
The conductors of both cables can be connected to each other.In addition, by simply inserting the ends of both water leakage detection conductors led out of the modular plug into the water leakage detection conductor insertion part, both water leakage detection conductors can be used as continuity changeover switches. Can connect. Therefore, by operating the conduction change-over switch in this state, as in the case of the cable connection structure, a state in which the water leakage detection conductors are simulated electrically (test state) and a state in which both the water leakage detection conductors are insulated from each other and the water leakage is detected. The state can be switched to a detectable state.

[0013]

FIG. 1 shows a first embodiment of the present invention.
This will be described with reference to FIG.

In FIG. 2, an integrated system wiring board 12 is installed on a floor panel 10, and a modular outlet 14 of the present invention is fixed to an appropriate place of the floor panel 10. Below the floor panel 10, a second cable 16, which is a cable with a water leak detection function, is wired. One end of the second cable 16 is connected to the integrated system wiring board 12, and the other end is connected to the modular outlet 14. It is connected. A terminal device 18 such as a personal computer can be installed on the floor panel 10. The terminal device 18 is connected to the integrated system by the ordinary first cable 20, the second cable 16 and the modular outlet 14. It is designed to be connected to the wiring board 12.

In the second cable 16, as shown in FIGS. 3 and 4, two wires 3 each composed of the conductor 1 and the insulator 2 are twisted two by two, and four sets of twisted pairs 4 are bundled. The cable body is configured.

The cable body is covered by a synthetic resin sheath over the entire circumference. This sheath is divided into an inner sheath 5 and an outer sheath 8, and a pair of water leakage detection conductors 6 are provided between the sheaths 5 and 8. These water leakage detecting conductors 6 are formed in a thin plate shape in order to reduce the cable diameter, and are disposed at positions 180 ° apart from each other in the circumferential direction.

In the outer sheath 8, a plurality of through holes 9 are provided in a portion covering each of the water leakage detecting conductors 6 in the cable axial direction. In the embodiment of the present invention, FIG.
As shown in the figure, circular through holes 9 having a diameter smaller than the width of the water leakage detecting conductor 6 are arranged side by side in the cable axis direction at an interval P.

Further, a water transmission member 7 is provided between the water leakage detection conductors 6. As the moisture transmission member 7, a member that quickly transmits moisture to each of the water leakage detection conductors 6 by capillary action is preferable, and a paper tape, cotton, or the like is preferable.

Then, the end of each electric wire 3 of the second cable 16 is connected to the integrated system wiring board 12, and both of the water leakage detecting conductors 6 are connected to the integrated system wiring board 12 by independent circuits. It is connected to the. The integrated system wiring board 12 plays a role of distributing power to the electric wires 3 and simultaneously monitoring the insulation between the two water leakage detection conductors 6 to thereby judge water leakage detection (water leakage). The detection function will be described later in detail.)

The first cable 20 is a cable in which the sheaths 5 and 8 are integrated and the water leakage detecting conductor 6 and the moisture transmitting member 7 are omitted (that is, the first cable 20 is equivalent to a normal cable). Here, the illustration of the internal structure is omitted.

FIG. 1 shows the modular outlet 14 and a connection structure using the same. The first cable 20
Are connected to a modular plug 26 at both ends.
The modular plug 26 is equivalent to a conventionally used one, and an insertion hole 26a into which the end of the first cable 20 is inserted, and each electric wire 3 of the inserted first cable 20 are provided. An electrically connected terminal 26b, and a leaf spring portion 26c for holding the mounted state on the outer surface of the plug.
Are formed.

On the other hand, the modular outlet 14 incorporates an outlet member 22 and a conduction switch 28. The outlet member 22 is equivalent to that incorporated in a conventional modular outlet, and has a plug fitting hole (mounting portion) 24 and a connection portion (not shown). The plug fitting hole 24 is provided in the modular outlet 14.
The modular plug 26 is detachably fitted into the plug fitting hole 24. Each of the electric wires 3 of the second cable 16 can be connected to the connection portion, and the modular plug 26 is attached to the first plug in a state where the modular plug 26 is fitted in the plug fitting hole 24. The electric wire 3 of the cable 20 and the second cable 1 connected to the connection
The outlet member 22 is configured to electrically connect the electric wire 3 to the electric wire 3.

The continuity switch 28 has a pair of connection terminals 30 and an operation lever 32. Each connection terminal 3
The end of the water leakage detection conductor 6 of the second cable 16 can be electrically connected to the terminal 0. The entire conduction changeover switch 28 is configured so as to be switched between a state in which both connection terminals 30 are conducted and a state in which they are insulated by sliding operation of the operation lever 32.

Next, a wiring procedure using the modular outlet 14 will be described.

At the stage before the terminal device 18 shown in FIG. 2 is actually installed, the second cable 16 which is a cable with a water leak detection function is laid under the floor panel 10 in advance. Specifically, the modular outlet 14 is fixed to a place near the place where the terminal device 18 is to be installed on the floor panel 10, and the end of the electric wire 3 of the second cable 16 pulled out from the integrated system wiring board 12 is connected Modular outlet 14
And the end of each of the water leakage detecting conductors 6 is connected to each of the connection terminals 30 of the conduction switch 28.
Connect to

At the stage of the preceding wiring, a circuit as shown in FIG. 5 is constructed. In this circuit, when the operation lever 32 of the conduction changeover switch 28 is operated to conduct the two connection terminals 30 (in FIGS. 1 and 5, the conduction changeover switch 28 is switched to the “test” side), the two water leakage detection conductors are connected. 6 can be simulated, and in this state, whether there is any abnormality in the water leakage detection function of the second cable 16 (specifically, there is no failure such as disconnection in both water leakage detection conductors 6) Or not) can be confirmed, and the reliability can be improved.

After the continuity test, the continuity changeover switch 28 may be switched to the "normal" side to insulate both connection terminals 30 from each other. In this state, if there is no water leakage under the floor, the insulation between the two water leakage detecting conductors 6 is maintained, whereas if water leakage occurs under the floor, that is, around the second cable 16, moisture is removed. By contacting each of the water leakage detection conductors 6 through the through holes 9, the water on the outside of the cable becomes a medium for electrically connecting the water leakage detection conductors 6, and the water leakage detection conductors are compared with a case where no water leakage occurs. Since the insulating property of No. 6 is reduced, the occurrence of water leakage can be detected quickly by monitoring the insulating property with the integrated system wiring board 12.

In particular, in the second cable 16 shown in FIGS. 3 and 4, since the moisture transmission member 7 is interposed between the two water leakage detection conductors 6, the outer sheath is passed through the through hole 9. The water that has entered the inside of the inside 8 can also quickly spread between the two water leakage detecting conductors 6 due to the capillary phenomenon in the water transmission member 7 and become an electric medium. Therefore, the water leak detection sensitivity is further enhanced as compared with the case where the water transmission member 7 is not provided.

In the second cable 16, the water leakage detecting conductor 6 is protected by the outer sheath 8 and is stably held at a predetermined position.
The cable is hardly displaced or damaged, and the cable can be laid in a free form in a stable state, so that it is particularly suitable as a cable to be laid in advance in a building.

When the terminal equipment 18 is actually installed after the preceding wiring, the modular plug 26 at one end of the first cable 20 is inserted into the plug fitting hole of the terminal equipment 18, and the modular plug 26 at the other end is connected to the modular plug. Plug fitting hole 24 of outlet member 22 of outlet 14
It just needs to fit in. Thereby, the terminal device 18
First cable 20 on floor, modular outlet 1
4 and to the integrated system distribution board 12 via the second cable 16 below the floor.

FIGS. 6 and 7 show a second embodiment of the present invention.
Shown in In the first embodiment, the first cable 2
The second cable 16 is directly connected to the modular outlet 14 with the modular plug 26 attached to the end of the second cable 1.
A modular plug 26 is attached to an end of the cable 6, and the first cable 20 is directly connected to the modular outlet 14. That is, the male and female are opposite to those of the first embodiment.

As shown in FIG. 7, at the end of the first cable 16, the electric wire 3 is connected to the terminal 26b of the modular plug 26 in the same manner as in the first embodiment. The end of the conductor 6 is inserted into the cable insertion hole 26.
It is led out of the modular plug 26 backward from a, and is further bent in a U-shape and directed to the tip side.

On the other hand, the modular outlet 1 shown in FIG.
In the fourth embodiment, in addition to the outlet member 22 and the continuity switch 28 shown in the first embodiment, a pair of water leakage detection conductor insertion portions 34 are provided on both sides of the outlet member 22. The water leakage detection conductor insertion portion 34 includes a water leakage detection conductor insertion port 36 that is open to the outside of the outlet and into which both ends of the water leakage detection conductors 6 can be inserted, and an output terminal 38. With the end of the water leakage detection conductor 6 completely inserted into the port 36, the water leakage detection conductor 6 and the output terminal 38 are electrically connected. Each output terminal 38 is connected to each connection terminal 30 of the conduction switch 28 via a conducting wire 40.

According to this structure, the modular plug 26 is mounted by fitting the modular plug 26 into the plug fitting hole 24 in a state where the electric wire 3 of the first cable 20 is connected to the connecting portion of the outlet member 22. The wires 3 of the second cable 16 and the wires 3 of the first cable 20 can be connected, and at the same time, the ends of both the water leakage detection conductors 6 are connected to the water leakage detection conductor insertion portions 34 for the water leakage detection. By inserting the water leakage detection conductor 6 into the conductor insertion port 36, the water leakage detection conductor 6 can be connected to each connection terminal 30 of the conduction switch 28 via the conductor 40. By this operation, a circuit as shown in FIG. 5 is constructed in the same manner as in the first embodiment. In this state, by switching the conduction switch 30 to the “test” side, the water leakage detection function is realized. Normal or abnormal can be determined, and water leakage can be actually detected in a state where the state is switched to the “normal” side.

As described above, the present invention is not necessarily limited to the case where the second cable 16 which is a cable with a water leakage detection function is pre-wired, and the second cable 16 and the other first cables are used.
(The first cable 20 may or may not have a leak detection function).

In the present invention, regardless of the specific structure of the cable, the second cable 16 is a cable with a water leakage detection function provided with a pair of water leakage detection conductors in parallel with the conductor. Widely applicable. For example, as shown in FIG. 8 as a third embodiment, four pairs of twists 4 are arranged in a line in the horizontal direction, and the inner sheath 5 and the outer sheath 8 cover the same in a rectangular shape. A pair of left and right water leakage detection conductors 6 and a moisture transmission member 7 are disposed on the upper surface of the outer conductor 5 and an outer sheath 8 is placed thereon. Kaihei 6
The cable shown in Japanese Patent Application Publication No. 187842 may be used.

[0037]

As described above, according to the present invention, an outlet member for connecting a cable having a modular plug attached to an end to another cable, and a state in which a pair of conductors for detecting water leakage are insulated from each other. A modular outlet provided with a continuity changeover switch for switching between the first and second cables and a cable connecting structure using the modular outlet. The simple structure using a single modular outlet has a first cable and a water leak detecting function. This has the effect of simplifying the work of connecting the second cable, which is a cable, and at the same time greatly simplifying the test work on the water leak detection function of the second cable.

[Brief description of the drawings]

FIG. 1 is a perspective view of an internal structure of a modular outlet showing a first embodiment of the present invention.

FIG. 2 is an indoor cable wiring diagram showing the embodiment.

FIG. 3 is a sectional view taken along line AA of FIG. 4;

FIG. 4 is a side view of the second cable.

FIG. 5 is a diagram showing a circuit constructed in the embodiment.

FIG. 6 is a perspective view of a modular outlet internal structure according to a second embodiment of the present invention.

FIG. 7 is a partially cutaway perspective view showing a terminal structure of a second cable connected to the modular outlet.

FIG. 8 is a sectional perspective view of a second cable showing a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 3 Electric wire 4 Pair twist 5 Inner sheath 6 Water leak detection conductor 8 Outer sheath 14 Modular outlet 16 Second cable 20 First cable 22 Outlet member 24 Plug insertion hole (mounting part) 26 Modular plug 28 Conduction changeover switch 30 Connection terminal 34 Conductor insertion part for water leakage detection

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01R 13/70-13/713 H01R 13/33 G01N 27/04 H01B 7/32

Claims (4)

(57) [Claims] 1. A first cable having a lead wire and a modular plug attached to a tip thereof, and a second cable having a leak detection function in which a pair of leak detection conductors are arranged in parallel with the lead wire. A modular outlet for a cable with a water leak detection function for connecting to a cable, comprising a mounting portion to which the modular plug can be mounted and a connecting portion to which a conductor of the second cable can be connected, wherein the mounting portion An outlet member configured to conduct the conducting wire of the first cable and the conducting wire of the second cable connected to the connection portion in a state where the modular plug is mounted, and water leakage of the second cable The detection conductor has a pair of connection terminals that can be connected to each other, and a conduction switch that switches between a state in which both connection terminals are conducted and a state in which they are insulated is provided. Modular outlet for cable with leak detection function. 2. The connecting wire of the second cable is connected to a connecting portion of an outlet member of the modular outlet for a cable having a water leakage detecting function according to claim 1, and both connecting terminals of the conduction switch are connected to the second cable. A cable connection structure using a modular outlet for a cable with a water leak detection function, characterized by connecting both of the above water leakage detection conductors. 3. A first cable having a lead wire, a second cable having a water leak detection function having a pair of water leakage detection conductors disposed in parallel with the lead wire and having a modular plug mounted at a distal end thereof. A modular outlet for a cable with a water leak detection function for connecting the module, comprising a mounting portion to which the modular plug can be mounted and a connecting portion to which a conductor of the first cable can be connected, wherein the mounting portion has a modular plug. And an outlet member configured to conduct the conductive wire of the second cable and the conductive wire of the first cable connected to the connection portion in a state where the second cable is mounted.
The end of the conductor for detecting the water leakage of the cable of the cable is inserted into the conductor for the detection of the water leakage that can be inserted and removed, and the state where the two conductors for the water leakage detection inserted into the conductor insertion for the water leakage detection are insulated from each other. A modular outlet for a cable with a water leakage detection function, which is provided with a continuity changeover switch that switches between the two. 4. The end of both of the conductors for detecting water leakage of the second cable while the conductor of the first cable is connected to the connection part of the outlet member of the modular outlet for a cable with water leakage detection function according to claim 3. A cable connection structure using a modular outlet for a cable with a water leakage detection function, wherein a portion is led out of the modular plug to the outside thereof.