JP2009021118A - Unit cable for indoor wiring - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a unit cable for indoor wiring capable of achieving the improvement of productivity, cost reduction, and size reduction. <P>SOLUTION: This unit cable 11 for the indoor wiring is equipped with a plurality of cables 12, a plurality of connectors 13 installed at terminals of these cables 12, a circuit constituting member 14 for standard and a circuit constitution member 15 for a switch to which the connectors 13 are directly fitted, a joint box 16 to house and retain these, and a cable holder 17 which is installed at the joint box 16 and by which the cables 12 are retained. When the connectors 13 are fitted to the circuit constitution member 14 for standard and the circuit constitution member 15 for the switch, crimping blades of the connectors 13 crimp electric wires corresponding to them at the time of the fitting, electric connection is established, and by this, wiring connection is completed. <P>COPYRIGHT: (C)2009,JPO&INPIT

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. 11, the conventional indoor wiring unit cable is filled and molded with an insulating thermosetting resin (epoxy resin, etc.) 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.

  In the conventional unit cable for indoor wiring shown in FIG. 11, 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 connection portion is fixed by the thermosetting resin 4, it is heavy and the handleability is deteriorated, and it cannot be disassembled, so that it is impossible to correct the incorrect connection. Have.

As an indoor wiring unit cable that can solve the above-mentioned several problems, a technique disclosed in Patent Document 2 below is known. A unit cable for indoor wiring disclosed in Patent Document 2 below includes a connector provided at each end of a plurality of cables (VVF cable), a circuit component having an electric wire routed in a desired path, a connector, It is provided with a relay connection member (name in the literature: body unit) that is interposed between circuit constituent members and performs electrical connection and mechanical connection. By using these three members, the insulation cores are connected to each other. Can be connected.
Registered Utility Model No. 3005912 JP 2005-27493 A

  In the unit cable for indoor wiring disclosed in Patent Document 2, since the connection between the insulation cores cannot be performed unless a relay connection member is interposed between the connector and the circuit constituent member, the number of parts is reduced. In addition to the increase in productivity and cost, there is a problem that the joint box becomes larger by at least the height of the connecting member.

  This invention is made | formed in view of the situation mentioned above, and makes it a subject to provide the unit cable for indoor wiring which can aim at productivity improvement, cost reduction, and compactization.

  The unit cable for indoor wiring of the present invention according to claim 1 made to solve the above-mentioned problems is a joint box, a plurality of cables with exposed insulation cores, and a connector provided at each end of the plurality of cables. And a circuit component member that accommodates an electric wire routed in a desired path and is attached in the joint box, and a cable holder that is attached in the joint box and holds the plurality of cables. In the indoor wiring unit cable in which the insulated wire core is connected using the connector and the circuit constituent member, the connector has a bottomed cylindrical shape and is open to the circuit constituent member. A housing having a connector-side fitting portion that directly fits and having a plurality of conductor insertion holes in the bottom wall, and the housing A plurality of press contact blades having a press contact portion at one end and projecting from the opening, and a conductor of the insulated wire core provided in the housing and inserted through the conductor insertion hole A conductor pressing elastic member that presses against the press contact blade, and the circuit component member includes a member side fitting portion corresponding to the connector side fitting portion and a wire receiving groove for storing the electric wire. It is a feature.

  According to the present invention having such a feature, the end of the cable is peeled off to expose the insulated wire core, and the end of the insulated wire core is peeled off to expose the conductor. When the insulated wire core is inserted into the connector, the inserted conductor is pressed by the conductor pressing elastic member and attached to the corresponding press contact blade. The conductor is attached in a state of being in electrical contact with the press contact blade. Thereby, a connector is provided at the end of the cable. The connector has a structure that is directly fitted to the circuit component, and when the connector is fitted to the circuit component, the press contact blade presses the corresponding wire at the time of the fitting, and electrical connection is made. . When the connectors are fitted to the circuit constituent members by the number of cables, the connection between the insulated wire cores is completed.

  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 the plurality of press contact blades and the elastic member for pressing the conductor are provided in the housing by insertion. The plurality of press contact blades are pressed and held against the inner surface of the side wall of the housing by the conductor pressing elastic member.

  According to the present invention having such characteristics, the connector is easy to assemble and easy to disassemble.

  The indoor wiring unit cable according to claim 3 of the present invention is the indoor wiring unit cable according to claim 1 or 2, wherein each other end of the plurality of press contact blades is connected to the bottom wall in the housing. It is characterized by contacting.

  According to the present invention having such a feature, the bottom wall receives the force generated during the pressure contact with the electric wire of the circuit component member by bringing the end of the pressure contact blade into contact with the inner surface of the bottom wall of the housing. This makes it possible to stabilize the work related to the press contact and form a good connection state.

  According to the first aspect of the present invention, since there is no inclusion between the circuit component member and the connector, the productivity is improved as compared with the prior art, the cost is reduced, and further downsizing is achieved. There is an effect that it can be achieved.

  According to the present invention described in claim 2, since it contributes to the improvement of productivity and is a structure that can be easily decomposed, there is an effect that recyclability can be taken into consideration.

  According to the third aspect of the present invention, since the pressure contact is stable, there is an effect that it is possible to contribute to an improvement in productivity.

  Hereinafter, description will be given with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of a unit cable for indoor wiring according to the present invention. 2 is a perspective view of the cable terminal, FIG. 3 is a perspective view showing a state in which the connector is provided on the cable terminal, FIG. 4 is an explanatory diagram of the structure of the connector, and FIG. FIG. 6 is a perspective view of a circuit component member, FIG. 7 is a perspective view showing a fitting state of the circuit component member and a plurality of connectors, FIG. 8 is a perspective view of a joint box, and FIG. 9 is a perspective view of a cable holder. FIG. 10 is a perspective view of another example circuit component.

  In FIG. 1, reference numeral 11 indicates a unit cable for indoor wiring according to the present invention. This indoor wiring unit cable 11 includes a plurality of cables 12, a plurality of connectors 13, a standard circuit constituent member 14, a switch circuit constituent member 15, a joint box 16, and a cable holder 17. Has been. Hereinafter, the above-described components will be described with reference to FIGS.

  In FIG. 1 and FIG. 2, the cable 12 is not particularly limited, but is a known VVF cable, and has three insulated wire cores 18 and a sheath 19 covering these (insulated wires). The number of the cores 18 is an example, and the VVF 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. The exposed ends of the insulated core 18 are each stripped of the insulator to expose the conductor 20.

  In the indoor wiring unit cable 11 of this embodiment, ten cables 12 are used (not limited to this number). As shown in FIG. 1, the indoor wiring unit cable 11 of the present embodiment has a structure capable of supporting a maximum of ten cables 12 (assumed as an example).

  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).

  1, 3, and 4, the connector 13 is provided at the end of the cable 12. The connector 13 is configured to be attached to the end of the cable 12 by simply inserting the insulated wire core 18. The connector 13 is configured to be directly fitted to the standard circuit constituent member 14 and the switch circuit constituent member 15. Such a connector 13 includes a housing 21, a plurality of press contact blades 22, and a conductor pressing elastic member 23.

  The housing 21 is a bottomed cylindrical member formed by injection molding of an insulating synthetic resin material, and has a bottom wall 24, a side wall 25, and an opening 26. In this embodiment, the housing 21 is formed so that the bottom wall 24 and the opening 26 are rectangular. Further, the two opposing walls of the side wall 25 are formed in parallel.

  A conductor insertion hole 27 is formed through the bottom wall 24. The conductor insertion hole 27 is formed as a portion for inserting the conductor 20 of the cable 12 into the housing 21. In this embodiment, three conductor insertion holes 27 are formed at a predetermined interval. The outer surface of the bottom wall 24 is in contact with the end surface of the insulated wire core 18 so that the insertion amount is regulated.

  A pair of connector-side fitting portions 28 are formed on the side wall 25 at the edge position of the opening 26. The connector side fitting portion 28 is formed as a portion that is directly fitted and locked to the standard circuit constituent member 14 or the switch circuit constituent member 15. Although not particularly limited, the connector side fitting portion 28 of the present embodiment has a base portion 29 and a locking claw portion 30. The connector-side fitting portion 28 has a locking claw portion 30 coupled to the tip of the base portion 29. The locking claw portion 30 is formed so as to protrude outward.

  Two partition walls 31 for separating the pressure contact blade 22 are formed on the inner surface of the side wall 25. The partition wall 31 is disposed and formed so as to have an interval according to the width dimension of the press contact blade 22. The partition wall 31 is formed in a rib shape.

  The press contact blade 22 is a strip-shaped member formed by processing a metal plate having conductivity, and is provided in the housing 21 by a plug-in type. Three press contact blades 22 are provided in accordance with the number of the insulated wire cores 18 of the cable 12. The press contact blade 22 has a press contact portion 32 on one end side. The press contact blade 22 is formed in an elongated shape so that the press contact portion 32 on one end side protrudes from the opening 26 of the housing 21. The other end 33 of the press contact blade 22 is formed so as to contact the inner surface of the bottom wall 24 of the housing 21. The three press contact blades 22 are insulated from each other by a partition wall 31 of the housing 21.

  The conductor pressing elastic member 23 is a member formed by injection molding of an insulating synthetic resin material, and is provided in the housing 21 by insertion (in this embodiment, the bottom wall of the housing 21). 24 until it contacts the inner surface of 24). The conductor pressing elastic member 23 is formed so as to be able to press the conductor 20 of the insulating wire core 18 inserted through the conductor insertion hole 27 of the housing 21 against the corresponding press contact blade 22. The elastic member 23 for pressing the conductor is formed so that the press contact blade 22 can be pressed against the inner surface of the side wall 25 of the housing 21.

  The conductor pressing elastic member 23 includes a press contact blade pressing portion 34 that presses the press contact blade 22, a side wall contact portion 35 that contacts the inner surface of the side wall 25 on the opposite side of the press contact blade pressing portion 34, and these press contact blade pressing portions. 34 and the side wall abutting portion 35, and a conductor pressing portion 37 as a portion for pressing the conductor 20 of the insulated wire core 18 against the press contact blade 22. The conductor pressing elastic member 23 has elasticity. The press contact blade 22 is prevented from falling out of the housing 21 by the conductor pressing elastic member 23.

  The conductor 20 inserted between the conductor pressing portion 37 and the press contact blade 22 is difficult to be removed by the pressing of the conductor pressing portion 37 (the disconnection from the connector 13 is prevented by the cable holder 17).

  In FIG. 1, the standard circuit constituent member 14 and the switch circuit constituent member 15 are attached in the joint box 16 with the connector 13 provided at the end of the cable 12 fitted and locked. .

  In other words, the standard circuit component member 14 is a standard circuit module, and the switch circuit component member 15 is a switch circuit module.

  1, 5, 6, and 7, the standard circuit component member 14 includes a circuit portion 38 and a plurality of electric wires 39 (covers in this embodiment) that are routed to the circuit portion 28 in a desired path. However, there is no need to be covered as long as it is an electric wire that can be press-contacted). The circuit portion 38 is a rectangular plate-like member that is formed by injection molding of an insulating synthetic resin material, and has a plurality of wire storage grooves 40 for storing the wires 39 and the connector side fitting of the connector 13. The portion 28 has a plurality of member-side fitting portions 41 for fitting and locking them.

  The electric wire housing groove 40 is formed as a groove extending straight in the left-right direction when the standard circuit constituent member 14 is mounted in the joint box 16. The electric wire storage groove 40 is formed so that the electric wire 39 can be faced after the electric wire 39 is stored. In the present embodiment, three wire storage grooves 40 are formed. The wire housing groove 40 is arranged and formed in accordance with the position of the press contact blade 22 of the connector 13. When the connector side fitting portion 28 of the connector 13 and the member side fitting portion 41 of the standard circuit constituent member 14 are fitted into the wire housing groove 40, the pressure contact blade 22 (pressure contact portion 31) of the connector 13 is inserted. It is like that.

  The member side fitting part 41 is formed so as to be paired at a position sandwiching the electric wire housing groove 40. Six member-side fitting portions 41 are formed along the electric wire housing groove 40 (12 are formed as a whole).

  1 and 8, the switch circuit component 15 includes a circuit portion 42 and a plurality of electric wires 43 (in this embodiment, having a coating, but not covered). The wire is not particularly limited as long as it is an electric wire that can be pressure-welded). The circuit part 42 is a rectangular plate-like member formed by injection molding of an insulating synthetic resin material, and has a plurality of wire storage grooves 44 for storing the wires 43 and the connector side fitting of the connector 13. The part 28 has a plurality of member side fitting parts 45 for fitting and locking the parts. The switch circuit component 15 is formed in a rectangular shape that is slightly shorter in the left-right direction than the standard circuit component 14.

  Unlike the wire housing groove 40 of the standard circuit component 14, the wire housing groove 44 is formed as a groove extending in the left-right direction and the front-rear direction (for example, a plurality of grooves intersect like a grid). Formed). In this embodiment, the number of grooves extending in the left-right direction is four. The electric wire storage groove 44 is formed so that the electric wire 43 can be exposed after the electric wire 43 is stored. The electric wire storage groove 44 is arranged and formed in accordance with the position of the press contact blade 22 of the connector 13. When the connector side fitting portion 28 of the connector 13 and the member side fitting portion 45 of the switch circuit component 15 are fitted to the wire housing groove 44, the press contact blade 22 (pressure contact portion 31) of the connector 13 is inserted. It is like that.

  The member-side fitting portion 45 is the same portion as the member-side fitting portion 41 of the standard circuit constituent member 14 and is formed to be paired at a position where the wire housing groove 44 is sandwiched. Four member-side fitting portions 45 are formed along the wire housing groove 44 (along the left-right direction) (eight are formed as a whole).

  In FIG. 1 and FIG. 9, the joint box 16 is a box-shaped member formed by injection molding of an insulating synthetic resin material, and is coupled to the joint box body 46 via a joint box body 46 and a hinge 47. And a joint box lid 48 to be used. The joint box lid 48 is formed so as to cover the front opening of the joint box main body 46. The joint box body 46 is formed to have a lower surface opening in addition to the front surface opening.

  The front opening is formed for inserting and storing a standard circuit constituent member 14 and a switch circuit constituent member 15 that are fitted and locked to the connector 13 at the end of the cable 12. It is formed to pull out 12.

  The joint box main body 46 is formed with an attachment portion 49 for attaching the indoor wiring unit cable 11 to a wall or a pillar. The joint box body 46 is formed with circuit component member holding portions 50 and 51 for holding the standard circuit component member 14 and the switch circuit component member 15 inserted therein. The circuit component holding portions 50 and 51 are formed in the vicinity of the attachment portion 49, in other words, on the inner upper side of the joint box main body 46. A holder holding portion 52 for holding the cable holder 17 inserted into the inside of the joint box main body 46 is formed on the lower side inside the joint box main body 46. Reference numeral 53 indicates a locking recess. The locking recess 53 is formed so that the locking projection 54 of the joint box lid 48 can be locked.

  In addition to the locking projection 54, the joint box lid 48 is formed with, for example, a substantially bridge-shaped holder pressing portion 55.

  1 and 10, the cable holder 17 is not particularly limited, but is a comb-like member formed by injection molding of an insulating synthetic resin material, and includes a plurality of cable insertion recesses 56. Yes. The cable 12 is inserted into the cable insertion recess 56. The cable insertion recess 56 is formed in a shape that can hold the cable 12 (even if an external force in the cable pulling direction is applied with the cable 12 held, the fitting state of the connector 13 and the conductor It is preferable to have a holding force that does not affect the contact state between the blade 20 and the press contact blade 22).

  In the above configuration, the end of the cable 12 is peeled off to expose the insulating core 18, and the end of the insulating core 18 is peeled off to expose the conductor 20. When 18 is inserted into the connector 13, the inserted conductor 20 is pressed by the conductor pressing elastic member 23 and attached to the corresponding press contact blade 22. The conductor 20 is attached in a state of being in electrical contact with the press contact blade 22. Thereby, the connector 13 is provided at the terminal of the cable 12.

  Since the connector 13 has a structure that is directly fitted to the standard circuit component 14 and the switch circuit component 15, when the connector 13 is first fitted to the standard circuit component 14 (see FIG. 5). At the time of this fitting, the press contact blade 22 presses the corresponding electric wire 39 to make an electrical connection (the insulated wire cores 18 are connected to each other). When the connectors 13 are fitted by the number of the cables 12 corresponding to the standard circuit constituent member 14, the state shown in FIG. 7 is obtained.

  Next, similarly to the standard circuit constituent member 14, when the connector 13 is fitted to the switch circuit constituent member 15, the press contact blade 22 presses the corresponding electric wire 43 at the time of the fitting, and the electrical circuit 43 is electrically connected. Connection is made (insulation wire cores 18 are connected to each other). The connector 13 is fitted by the number of the cables 12 corresponding to the switch circuit component 15, and then the standard circuit component 14 and the switch circuit component 15 in a state in which the connector 13 is fitted are connected to the joint box body. When housed and held inside 46, the state shown in FIG. At this time, the ten cables 12 are pulled out from the lower surface opening of the joint box body 46 while being held by the cable holder 17.

  Finally, when the joint box lid 48 is fitted into the joint box main body 46, the assembly of the indoor wiring unit cable 11 of the present invention is completed.

  As described above with reference to FIG. 1 to FIG. 10, according to the indoor wiring unit cable 11 of the present invention, between the standard circuit component member 14 and the switch circuit component member 15 and the connector 13. Since there are no inclusions, there is an effect that productivity can be improved as compared with the prior art, cost can be reduced, and further downsizing can be achieved.

  Also, according to the indoor wiring unit cable 11 of the present invention, as can be seen from the above configuration and structure, all are assembled by fitting or insertion, so that the structure is easy to disassemble and the recyclability is taken into consideration. There is an effect that can be.

  The indoor wiring unit cable 11 of the present invention is inexpensive and excellent in environment.

  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 perspective view which shows one Embodiment of the unit cable for indoor wiring of this invention. It is a perspective view of a cable terminal. It is a perspective view which shows the state which provided the connector in the cable terminal. It is a structure explanatory view of a connector. It is a perspective view which shows the fitting state of a circuit structural member and a connector. It is a perspective view of a circuit structural member. It is a perspective view which shows the fitting state of a circuit structural member and a some connector. It is a perspective view of a joint box. It is a perspective view of a cable holder. It is a perspective view of the circuit structural member used as another example. It is sectional drawing of the unit cable for indoor wiring of a prior art example.

Explanation of symbols

11 Unit cable for indoor wiring 12 Cable 13 Connector 14 Standard circuit component (circuit component)
15 Switch circuit components (circuit components)
16 Joint box 17 Cable holder 18 Insulated wire core 19 Sheath 20 Conductor 21 Housing 22 Press contact blade 23 Conductor pressing elastic member 24 Bottom wall 25 Side wall 26 Opening 27 Conductor insertion hole 28 Connector side fitting part 29 Base 30 Locking claw part 31 Bulkhead 32 Pressing part 33 Other end 34 Pressing blade pressing part 35 Side wall contact part 36 Connecting part 37 Conductor pressing part 38 Circuit part 39 Electric wire 40 Electric wire receiving groove 41 Member side fitting part 42 Circuit part 43 Electric wire 44 Electric wire receiving groove 45 Member Side fitting part 46 Joint box body 47 Hinge 48 Joint box lid 49 Mounting part 50, 51 Circuit component holding part 52 Holder holding part 53 Locking concave part 54 Locking convex part 55 Holder pressing part 56 Cable insertion concave part

Claims (3)

A circuit configuration in which a joint box, a plurality of cables with exposed insulation cores, a connector provided at each end of the plurality of cables, and an electric wire routed in a desired path are accommodated and installed in the joint box And a wiring holder that is mounted in the joint box and holds the plurality of cables, and that connects the insulated wire cores using the connector and the circuit constituent member. Unit cable
The connector has a cylindrical shape with a bottom and has a connector-side fitting portion that directly fits to the circuit component member on the opening side, and a plurality of conductor insertion holes on the bottom wall; A plurality of press contact blades having a press contact portion on one end side, the press contact portion projecting from the opening, and the insulating wire core provided in the housing and inserted through the conductor insertion hole. A conductor pressing elastic member that presses the conductor against the press contact blade,
The circuit component member has a member-side fitting portion corresponding to the connector-side fitting portion, and an electric wire storage groove for storing the electric wire. The unit cable for indoor wiring according to claim 1,
The plurality of press contact blades and the conductor pressing elastic member are provided in the housing by insertion, and the plurality of press contact blades are pressed against the inner surface of the side wall of the housing by the conductor pressing elastic member. Unit cable for indoor wiring. In the indoor wiring unit cable according to claim 1 or 2,
A unit cable for indoor wiring, wherein the other ends of the plurality of press contact blades are brought into contact with the bottom wall in the housing.

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