JP4884321B2 - Unit cable for indoor wiring - Google Patents

Description

  The present invention relates to a unit cable used for indoor wiring.

  In recent years, a room unit that is unitized for each room such as the entrance, living room, bedroom, etc. is manufactured at the factory of the housing manufacturer, and these are assembled at the construction site according to the client's request and site shape, so that one room can be completed The prefabricated house construction method is known. In the prefabricated house construction method, wiring for each room unit is also performed in the factory in advance, and simplification of indoor wiring work can be achieved by this wiring. In order to achieve simplification of indoor wiring work, it is effective to use a unit cable for indoor wiring provided with a joint box.

As shown in FIG. 8, the conventional indoor wiring unit cable is filled and molded with an insulating thermosetting resin (epoxy resin or the like) 4 to fix and protect the branch connection part. Some have adopted a simple structure (see, for example, Patent Document 1 below). Conventional indoor wiring unit cables such as two-core cables and three-core cables are used depending on the application. The connecting portion of the insulated wire core 1 constituting the cable 2 is connected using a crimp sleeve 3.
Registered Utility Model No. 3005912 (Page 2, Fig. 1)

  In the conventional indoor wiring unit cable shown in FIG. 8, since the crimp sleeve 3 is used and the circuit connection is manually performed using a connection tool, it takes time to work and a connection error occurs. Have the problem of In addition, since the connection portion is filled and molded with the thermosetting resin 4, a resin injection device and a thermosetting resin material for molding are necessary, and it is also necessary to ensure a sufficient curing time, which is inexpensive and short. There is a problem that it is difficult to manufacture in the lead time. Furthermore, since the entire wire connection part is fixed by the thermosetting resin 4, it is heavy and not easy to handle, but it cannot be disassembled. It has the problem of being difficult.

  In addition, the conventional unit cable for indoor wiring has a problem that it is impossible to increase the number of circuits because the connection portion is filled and molded with the thermosetting resin 4. .

  The present invention has been made in view of the above-described circumstances, and can be easily connected, and can improve productivity, handleability, connection repairability, and recyclability. Furthermore, an object of the present invention is to provide a unit cable for indoor wiring capable of increasing the number of circuits.

  In order to solve the above-mentioned problems, the unit cable for indoor wiring of the present invention according to claim 1 is provided with a plurality of cables in which an insulated wire core is exposed at a terminal, and an electric wire positioning groove for housing the insulated wire core. A plurality of first joint box constituent members, a second joint box constituent member having a plurality of wire storage grooves extending in a direction intersecting the wire positioning grooves, and one or a plurality of circuit configurations stored in the corresponding wire storage grooves The insulated wire core that is inserted into an intersection position of the electric wire positioning groove and the electric wire storage groove in a state where the electric wire, the first joint box constituent member and the second joint box constituent member are overlapped, and A plurality of press contact blades that perform electrical connection by press-contacting only intersecting portions of the circuit configuration wires; and the first joint box constituent member and / Or Toritsui the second joint box constituent member is characterized by comprising a cover for covering the insertion portion of at least the pressure contact blades.

  According to the present invention having such a feature, the insulated wire core of the cable is accommodated in the wire positioning groove of the first joint box constituting member, and the circuit constituting wire is accommodated in the wire accommodating groove of the second joint box constituting member. When the first joint box constituting member and the second joint box constituting member are overlapped with each other, the insulated wire core and the circuit constituting electric wire cross each other. After that, when the press contact blade is inserted into the intersection where it is necessary to connect and the electrical connection is made and the cover is attached, or the press contact blade is inserted at the same time while the cover is attached, the entire assembly is completed. Complete.

  On the other hand, the unit cable for indoor wiring according to the present invention removes the cover, pulls out the pressure contact blade, separates the overlapping first joint box constituent member and second joint box constituent member, and further isolates the insulated wire from the wire positioning groove. When the core is pulled out and the circuit-constituting wires are pulled out from the wire receiving grooves, the parts are disassembled to the single component level. In the present invention, a unit cable for indoor wiring can be configured with at least six types of parts.

  A unit cable for indoor wiring according to a second aspect of the present invention is the unit cable for indoor wiring according to the first aspect, wherein a pressure contact blade fixing groove for inserting and fixing the pressure contact blade is formed in the cover. It is a feature.

  According to the present invention having such a feature, it is possible to perform electrical connection with the press contact blade in a lump by fixing the press contact blade to the cover in advance in accordance with the connection position. That is, when the cover is attached to the first joint box constituent member and / or the second joint box constituent member, the insertion of the press contact blade and the electrical connection are completed at the same time.

  A unit cable for indoor wiring according to a third aspect of the present invention is the unit cable for indoor wiring according to the first or second aspect, wherein the first joint box constituent member and the second joint box constituent member are overlapped. One or a plurality of joint pressure contact blades that press-contact the circuit configuration wires by being inserted toward the wire storage groove in a state of being connected, and the cover is for a joint for allowing the joint pressure contact blades to pass therethrough. A press-contact blade insertion hole is formed.

  According to the present invention having such a feature, the indoor wiring unit cable can be stacked in an electrically connected state via the joint pressure contact blade that penetrates the cover. That is, it becomes possible to increase the number of circuits.

  According to the first aspect of the present invention, there is an effect that the connection work can be easily performed. In addition, the productivity, handling, connection repairability, and recyclability can be significantly improved as compared with the prior art.

  According to the second aspect of the present invention, there is an effect that productivity can be further improved.

  According to the third aspect of the present invention, in addition to the above effect, there is an effect that a circuit can be increased.

  Hereinafter, description will be given with reference to the drawings. FIG. 1 is an exploded perspective view showing an embodiment of a unit cable for indoor wiring according to the present invention. 2 is a perspective view of the unit cable for indoor wiring, FIG. 3 is a perspective view of the cable and the first joint box constituting member, FIG. 4 is a perspective view of the circuit constituting wire and the second joint box constituting member, and FIG. FIG. 6A is a diagram illustrating a circuit example, and FIG. 6B is a diagram illustrating a pressure blade arrangement example in which the pressure blades are arranged in accordance with the circuit of FIG.

  In FIG. 1, reference numeral 11 indicates a unit cable for indoor wiring according to the present invention. The indoor wiring unit cable 11 includes a plurality of cables 12, a first joint box constituent member 13, a second joint box constituent member 14, one or a plurality of circuit constituent wires 15, and a plurality of press contact blades 16. , And a cover 17.

  The indoor wiring unit cable 11 has a structure in which a joint box can be configured by overlapping the first joint box constituting member 13 and the second joint box constituting member 14. In addition, the indoor wiring unit cable 11 has a structure that can be connected inside the joint box without manual work in this embodiment. Furthermore, the indoor wiring unit cable 11 has a structure in which a cover 17 is attached from the outside of the joint box to cover and protect at least a portion related to the connection. Hereinafter, each of the above-described constituent members will be described with reference to FIGS. 1 to 5.

  In FIG. 1 and FIG. 3, the cable 12 is not particularly limited, but is a known VVF cable, and includes three insulated wire cores 18 and a sheath 19 covering them (the VVF described above). The cable is an example, and other cables may be used). At the end of the cable 12, the sheath 19 is peeled off at a predetermined length, and the three insulated wire cores 18 are exposed in a row. It is assumed that the exposed end of the insulated core 18 is not stripped of the insulator.

  In this embodiment, four cables 12 are used (not limited to this number). As shown in FIG. 2, the indoor wiring unit cable 11 according to the present embodiment has a structure capable of supporting a maximum of four cables 12 (as an example).

  1 and 3, the first joint box constituting member 13 is a rectangular member in a plan view formed by injection molding of an insulating synthetic resin material, and includes a second joint box constituting member 14 and a cover 17. It is formed in a substantially thick plate shape that is sandwiched. The first joint box constituting member 13 is formed to have rigidity. The first joint box constituting member 13 is formed with a plurality of wire positioning grooves 20 and press contact blade insertion holes 21.

  Here, the arrow P in FIG. 1 is defined as the up and down direction, the arrow Q is defined as the left and right direction, and the arrow R is defined as the front and rear direction. Many).

  The electric wire positioning groove 20 is formed in a groove shape as a portion for housing the insulated wire core 18. The electric wire positioning groove 20 is formed on the rear surface 22 facing the second joint box constituting member 14. The electric wire positioning groove 20 is formed so as to extend straight in the vertical direction. The wire positioning grooves 20 are formed in accordance with the number of the insulated wire cores 18 (in this embodiment, for example, consideration is given to a combination of two-core cables. That is, 13 wire positioning grooves 20 are formed. Have been).

  The press contact blade insertion hole 21 is formed as a portion into which the press contact blade 16 is inserted. The press-contact blade insertion hole 21 is formed so as to penetrate the rear surface 22 and the front surface 23 opposite to the rear surface 22 and facing the cover 17. The press-contact blade insertion hole 21 is located at the intersection of an electric wire positioning groove 20 that houses the insulated wire core 18 and four later-described electric wire storage grooves 27 of the second joint box constituting member 14 that houses the circuit-forming electric wire 15. It is formed together.

  In this embodiment, the insulated wire core 18 and the circuit constituting wire 15 intersect at a substantially right angle, and the insulated wire core 18 and the circuit constituting wire 15 (wire positioning groove 20 at the intersecting position). And an electric wire storage groove 27 (to be described later) so as to be inclined at an angle of approximately 45 degrees (the above angle is an example). In this embodiment, 52 press-contact blade insertion holes 21 are formed (13 electric wire positioning grooves 20 and 4 electric wire receiving grooves 27, so the number of these intersecting positions is 52. ).

  1 and 4, the second joint box constituent member 14 is a rectangular member in a plan view formed by injection molding of an insulating synthetic resin material, and the first joint box constituent member 13 is overlapped with the first joint box constituent member 13. And a cable pressing portion 25 as a portion for pulling out and pressing the cable 12. The second joint box constituting member 14 is formed so that the box overlapping portion 24 is positioned on the upper side and the cable pressing portion 25 is positioned on the lower side. The second joint box constituting member 14 is formed so as to have rigidity similarly to the first joint box constituting member 13.

  On the front surface 26 of the box overlapping portion 24, four electric wire storage grooves 27 and 52 press contact blade insertion holes 28 are formed. Four wire storage grooves 27 are formed as portions for storing the circuit configuration wires 15. The electric wire storage grooves 27 are formed so as to extend straight in the left-right direction at predetermined intervals.

  The press contact blade insertion hole 28 is formed as a portion into which the press contact blade 16 is inserted. The press contact blade insertion hole 28 is arranged and formed so as to coincide with the position and size of the press contact blade insertion hole 21 of the first joint box constituting member 13. Four of the 52 press-contact blade insertion holes 28 are formed so as to penetrate the front surface 26 and the rear surface 29 of the box overlapping portion 24 (not limited to this. Useful when stacked in an electrically connected state).

  A deformable pressing member 30 is attached to the cable pressing portion 25. The pressing member 30 is attached to press the sheath 19 portion of the cable 12.

  1 and 4, the circuit configuration wire 15 is a member stored in the wire storage groove 27 of the second joint box configuration member 14 as described above, and includes a conductor and an insulator covering the conductor. It is configured with.

  In FIG. 1, the press contact blade 16 is a member formed by processing a conductive metal plate, and has an attachment fixing portion 31 and a press contact portion 32. The press contact blade 16 is inserted into the corresponding press contact blade insertion holes 21 and 28 of the first joint box constituting member 13 and the second joint box constituting member 14, and the insulation wire core 18 and the circuit constituting wire 15 which are necessary for connection are connected. It is formed so that only the intersecting portion can be pressed and electrical connection can be made. The press contact blade 16 is fixed to the cover 17 via an attachment fixing portion 31.

  1 and 5, the cover 17 is a rectangular member in plan view formed by injection molding of an insulating synthetic resin material, and the first joint box constituting member 13 and the second joint box in an overlapped state. It is formed so as to be attached to the component member 14, in other words, to be attached to the joint box by fitting or the like. The cover 17 has a box facing portion 33 facing the front surface 23 of the first joint box constituting member 13 and a cable pressing portion 34 as a portion for pulling out and pressing the cable 12. The cover 17 is formed so that the box facing portion 33 is positioned on the upper side and the cable pressing portion 34 is positioned on the lower side.

  48 pressure contact blade fixing grooves 36 are formed on the rear surface 35 of the box facing portion 33. The box facing portion 33 is formed with four pressure contact blade insertion holes 37 for joints that pass therethrough. The press contact blade fixing groove 36 is formed as a portion for fixing the press contact blade 16. The press contact blade fixing groove 36 is disposed and formed so as to coincide with the position and size of the press contact blade insertion holes 21 and 28 of the first joint box constituting member 13 and the second joint box constituting member 14. When the press contact blade 16 is fixed to the cover 17, the press contact blade 16 can be pressed together at the same time as the cover 17 is attached.

  The joint press-contact blade insertion holes 37 are arranged and formed so as to correspond to four of the 52 press-contact blade insertion holes 21 and 28. The joint pressure blade insertion hole 37 is formed to be slightly longer than the pressure blade fixing groove 36. A joint press contact blade 41 (see FIG. 7), which will be described later, is attached to the joint press contact blade insertion hole 37 as necessary.

  A deformable pressing member 38 is attached to the cable pressing portion 34. The pressing member 30 is the same as the pressing member 30 of the second joint box constituting member 14 and is attached to press the sheath 19 portion of the cable 12.

  The assembly and disassembly of the indoor wiring unit cable 11 according to the present invention will be described based on the above configuration and structure. The drawings refer to FIGS. 1 to 6.

  First, an operation of housing the insulated wire core 18 of the cable 12 in the electric wire positioning groove 20 of the first joint box constituting member 13 is performed. In addition, the operation of storing the circuit configuration wire 15 in the wire storage groove 27 of the second joint box component 14 is performed. Next, the operation | work which overlaps these 1st joint box structural members 13 and the 2nd joint box structural members 14 is performed. At this time, since the rear surface 22 and the front surface 26 are opposed to each other, the insulated wire core 18 and the circuit configuration electric wire 15 intersect each other. By superimposing the first joint box constituent member 13 and the second joint box constituent member 14, a joint box is configured.

  Subsequently, thereafter, an operation of fixing the press contact blade 16 to the cover 17 so as to correspond to the intersecting portion that needs to be connected is performed. Finally, when the operation of attaching the cover 17 with the pressure contact blade 16 fixed to the joint box is performed, a series of assembly is completed, and the indoor wiring unit cable 11 as shown in FIG. 2 is obtained.

  In the operation of attaching the cover 17, the press contact blade 16 is inserted into the joint box simultaneously with the installation of the cover 17, whereby the press contact is performed collectively. When the pressure welding is completed, a desired circuit is formed in the joint box (see FIG. 6).

  On the other hand, regarding the work of disassembling the indoor wiring unit cable 11, first, the work of removing the cover 17 is performed. At this time, the press contact blade 16 is extracted from the joint box. Next, an operation of removing the press contact blade 16 from the cover 17 is performed. Then, the operation | work which isolate | separates the 1st joint box structural member 13 and the 2nd joint box structural member 14 which overlapped is performed.

  Finally, an operation of extracting the insulated wire core 18 from the electric wire positioning groove 20 and an operation of extracting the circuit configuration electric wire 15 from the electric wire housing groove 27 are performed. Thereby, the unit cable 11 for indoor wiring is decomposed | disassembled to the component single-unit level.

  As described above with reference to FIGS. 1 to 6, according to the present invention, there is an effect that the connection work can be performed more easily than in the past. In addition, according to the present invention, it is not necessary to fill and mold the connection portion with a thermosetting resin as in the prior art, so that productivity, handling, connection repairability, and recyclability are significantly higher than before. There is an effect that it can be improved.

  By the way, the unit cable 11 for indoor wiring of this invention has a structure which can aim at circuit expansion. This will be described with reference to FIG. FIG. 7 is a perspective view showing a state where circuits are added.

  In FIG. 7, reference numeral 41 denotes a joint pressure contact blade. The joint pressure contact blade 41 is a member formed by processing a conductive metal plate, and includes an attachment fixing portion 42 and a pair of pressure contact portions 43. The joint pressure contact blade 41 is a member used when stacking the indoor wiring unit cables 11 to increase the number of circuits.

  The joint press contact blade 41 is inserted into the joint press contact blade insertion hole 37 formed in the cover 17 of the indoor wiring unit cable 11 and one press contact portion 43 is connected to the circuit configuration wire 15 (see FIG. 1). It has become so. Further, the other pressure contact portion 43 is inserted into the interior through the rear surface 29 (see FIG. 4) of the second joint box constituent member 14 in the indoor wiring unit cable 11 to be laminated, and the indoor wiring unit cable 11 to be laminated. It is connected to the circuit configuration electric wire 15.

  In addition, the present invention can of course be modified in various ways within the scope not changing the gist of the present invention.

It is a disassembled perspective view which shows one Embodiment of the unit cable for indoor wiring of this invention. It is a perspective view of the unit cable for indoor wiring. It is a perspective view of a cable and a 1st joint box structural member. It is a perspective view of the electric wire for circuit composition, and the 2nd joint box structural member. It is a perspective view of a pressure contact blade and a cover. (A) is a figure which shows the example of a circuit, (b) is a figure which shows the example of press-contacting blade arrangement | positioning which has arrange | positioned the press-contacting blade according to the circuit of (a). It is a perspective view which shows the state which added the circuit. It is sectional drawing of the unit cable for indoor wiring of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Unit cable for indoor wiring 12 Cable 13 1st joint box structural member 14 2nd joint box structural member 15 Electric wire for circuit composition 16 Press contact blade 17 Cover 18 Insulated wire core 19 Sheath 20 Wire positioning groove 21 Press contact blade insertion hole 22 Rear surface 23 Front surface 24 Box overlapping portion 25 Cable pressing portion 26 Front surface 27 Electric wire storage groove 28 Press contact blade insertion hole 29 Rear surface 30 Pressing member 31 Mounting fixing portion 32 Press contact portion 33 Box facing portion 34 Cable pressing portion 35 Rear surface 36 Press contact blade fixing groove 37 Press-fit blade insertion hole for joint 38 Pressing member 41 Press-fit blade for joint 42 Mounting fixing part 43 Press-contact part

Claims (3)

A plurality of cables with exposed insulation cores on the terminal;
A first joint box constituting member having a plurality of electric wire positioning grooves for accommodating the insulated wire cores;
A second joint box constituting member having a plurality of wire housing grooves extending in a direction intersecting the wire positioning groove;
One or a plurality of circuit constituting wires housed in the corresponding wire housing grooves;
For the insulation wire core and the circuit configuration that are inserted into the intersection position of the wire positioning groove and the wire storage groove in a state where the first joint box component member and the second joint box component member are overlapped with each other A plurality of press contact blades that perform electrical connection by pressing only the crossing portion of the wire; and
A cover that attaches to the first joint box component and / or the second joint box component and covers at least the insertion portion of the press contact blade;
An indoor wiring unit cable characterized by comprising: The unit cable for indoor wiring according to claim 1,
A unit cable for indoor wiring, wherein a pressure contact blade fixing groove for inserting and fixing the pressure contact blade is formed in the cover. In the indoor wiring unit cable according to claim 1 or 2,
With one or a plurality of joint press contact blades that press-contact the circuit configuration wires by being inserted toward the wire housing groove in a state where the first joint box configuration member and the second joint box configuration member are overlapped with each other. An indoor wiring unit cable, wherein the cover is formed with a joint press-contact blade insertion hole for allowing the joint press-contact blade to pass therethrough.

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