JP2022102338A - Cable branch connection structure - Google Patents

Abstract

To provide a cable branch connection structure that can easily and securely store a plurality of insulated cores of a cable in an insulated core storage groove, and has excellent connection reliability and assembly workability that can surely prevent damage to the insulated core.SOLUTION: A cable branch connection structure 1 includes: a trunk cable 2 with a plurality of insulated cores 4 exposed in the middle; a branch line cable 6 with a plurality of insulated cores 8 exposed at a terminal; a cable holder 10 that has a trunk line insulated core storage groove 12 that accommodates the plurality of insulated cores 4 of the trunk cable 2, and a branch wire insulated core storage grooves 22 that accommodates the plurality of insulated cores 8 of the branch wire cable 6 in a perpendicular direction to the trunk line insulated core storage groove 12; and a plurality of pressure welding terminals 30 having a pressure welding blade 33 for pressure welding and connecting the plurality of insulated cores 4 of the trunk cable 2 and the plurality of insulated cores 8 of the branch line cable 6. The branch wire insulated core storage groove 22 has a guide groove portion 22b that guides the insulated wire core 8 of the branch wire cable 6.SELECTED DRAWING: Figure 2

Description

The present invention relates to a cable branch connection structure for connecting a branch cable in the middle of a trunk cable.

For example, there is an insulating cover described in Patent Document 1 as an insulating cover for storing and protecting a plurality of electric wires connected to terminals. The insulating cover described in Patent Document 1 has a body having an electric wire retaining portion for fitting three electric wires exposed from the outer skin of the electric wire, and the three electric wires which are openably and closably connected to the body via a hinge. It is provided with a lid having a wire retaining portion for fitting the wire. Then, after fitting the three wires into the wire retaining portion of the body, when closing the lid, the lid is closed by further fitting the three wires into the wire retaining portion of the lid. It prevents the three electric wires from coming off from the insulating cover.

Japanese Unexamined Patent Publication No. 2001-15208

However, with the conventional insulating cover, it is difficult to accurately manually fit the three electric wires into the electric wire retaining portion of the lid when closing the lid. In addition, if the lid is closed with the three wires not fitted into the wire retaining parts of the body and lid, the wires will be pinched between the body and the lid, damaging the wires and causing poor connection. There is a risk of waking up.

The present invention has been made in view of the problems of the prior art. An object of the present invention is connection reliability and assembly that can easily and surely store a plurality of insulated wire cores of a cable in an insulated wire core storage groove and surely prevent damage to the insulated wire core. It is an object of the present invention to provide a cable branch connection structure excellent in attachment workability.

In the cable branch connection structure according to the embodiment of the present invention, the trunk cable in which the intermediate sheath is peeled to expose a plurality of insulated cores and the sheath of the terminal are peeled to expose a plurality of insulated cores. The branch wire cable has a trunk line insulated core storage groove for accommodating a plurality of insulated cores of the trunk cable, and the branch wire insulated core storage groove for accommodating a plurality of insulated cores of the branch wire cable. A plurality of pressure welding terminals having a cable holder held in a direction perpendicular to the trunk line insulating core storage groove and a pressure welding blade for pressure welding and connecting a plurality of insulated wire cores of the trunk line cable and a plurality of insulated wire cores of the branch wire cable. The branch line insulated wire core accommodating groove has a guide groove portion for guiding the insulated wire core of the branch line cable.

The number of the branch line insulated core accommodating grooves is formed corresponding to the number of the insulated wire cores of the branch line cable, and the branch line insulated core accommodating groove located at the center is formed linearly and is located on both sides. The branch line insulated core storage groove is a guide groove portion whose diameter is expanded by inclining the core introduction port side, and the remaining portion is parallel to the branch line insulated core storage groove located in the center. It is preferable that it is formed so as to be.

It is preferable that the distance between the branch wire sheath accommodating portion, which is the accommodating port of the sheath of the branch wire cable, and the distance of the inclined and expanded guide groove portion are a certain ratio or more.

A cover to be assembled to the cable holder is provided, and the plurality of pressure welding terminals are attached to the back surface of the cover, and when the cover is assembled to the cable holder, it corresponds to each coating of a plurality of insulated cores of the trunk cable. While cutting each coating of the plurality of insulated cores of the branch wire cable with the respective pressure welding blades of the plurality of pressure welding terminals, the cores of the corresponding insulating cores and the respective pressure welding blades come into contact with each other electrically. It is preferable that it is connected to.

A portion corresponding to the branch wire insulated core storage groove of the cable holder, provided with a middle cover for preventing the core from popping out, which is assembled between the portion corresponding to the branch wire insulated core storage groove of the cable holder and the cover. After assembling the middle cover to the above, it is preferable that the insulated core of the branch wire cable is housed in the branch wire insulated core accommodating groove.

According to the present invention, a plurality of insulated wire cores of a cable can be easily and surely stored in the insulated wire core storage groove, and connection reliability and assembly that can surely prevent damage to the insulated wire core can be prevented. It is possible to provide a cable branch connection structure having excellent workability.

It is a perspective view which shows an example of the cable branch part connection structure which concerns on embodiment of this invention. It is an exploded perspective view of the said cable branch part connection structure. It is a top view of the cable holder used for the said cable branch connection structure. (A) is an enlarged perspective view of the peripheral portion of the trunk line insulated core storage groove and the trunk line sheath storage portion of the cable holder, and (b) is a cross-sectional view taken along the IV-IV line in FIG. It is a top view of the 2nd holder body of the said cable holder. It is a perspective view of the pressure welding terminal used in the said cable branch part connection structure. It is a bottom view of the cover used for the said cable branch connection structure. It is a top view which shows the state which the trunk line cable and the branch line cable are wired in a T shape in the said cable holder. (A) is a cross-sectional view showing a state before accommodating the insulated core of the trunk cable in the trunk-insulated core accommodating groove. (B) is a cross-sectional view showing a state in which the insulated core of the trunk cable is housed in the trunk line insulated core storage groove. (C) is a cross-sectional view of a sheath holding portion for holding the sheath of each cable in the trunk wire sheath accommodating portion and the branch wire sheath accommodating portion of the cable holder. It is a perspective view which shows the state before accommodating the insulating wire core of a branch line cable after assembling the middle cover to the 2nd holder main body. It is a perspective view which shows the state after the insulation wire core of a branch line cable is housed after assembling the middle cover to the 2nd holder main body. It is a perspective view which shows the state which attached the pressure welding terminal to the back surface of the cover. It is a perspective view which shows the state which the lighting equipment is connected to the branch line cable of the said cable branch part connection structure.

Hereinafter, the cable branch connection structure according to the embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view showing an example of a cable branch connection structure according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of the cable branch connection structure. FIG. 3 is a plan view of the cable holder used in the cable branch connection structure. FIG. 4A is an enlarged perspective view of the peripheral portion of the trunk line insulated core storage groove and the trunk wire sheath storage portion of the cable holder. FIG. 4B is a cross-sectional view taken along the line IV-IV in FIG. FIG. 5 is a plan view of the second holder main body of the cable holder. FIG. 6 is a perspective view of a pressure welding terminal used in the cable branch connection structure. FIG. 7 is a bottom view of the cover used for the cable branch connection structure. FIG. 8 is a plan view showing a state in which the main cable and the branch cable are wired in a T shape in the cable holder. FIG. 9A is a cross-sectional view showing a state before the insulated core of the trunk cable is stored in the trunk isolated core storage groove. FIG. 9B is a cross-sectional view showing a state in which the insulated core of the trunk cable is housed in the trunk isolated core storage groove. FIG. 9 (c) is a cross-sectional view of a sheath holding portion for holding the sheath of each cable in the trunk wire sheath accommodating portion and the branch wire sheath accommodating portion of the cable holder. FIG. 10 is a perspective view showing a state after assembling the middle cover to the second holder main body and before accommodating the insulated wire core of the branch wire cable. FIG. 11 is a perspective view showing a state after the insulating wire core of the branch wire cable is housed after the middle cover is assembled to the second holder main body. FIG. 12 is a perspective view showing a state in which the pressure welding terminal is attached to the back surface of the cover. FIG. 13 is a perspective view showing a state in which a lighting device is connected to a branch line cable having a cable branch connection structure.

As shown in FIGS. 1 and 2, the cable branch connection structure 1 includes a 3-core trunk cable 2, a 3-core branch cable 6, a flat T-shaped cable holder 10, and three pressure welding terminals 30. , A flat T-shaped cover 40 attached to the cable holder 10. Further, the cable branch connection structure 1 includes a middle cover 60 that can be attached to the cable holder 10.

As shown in FIGS. 2, 8, 9 (a) and 9 (b), the trunk cable 2 is a 3-core flat cable (VVF cable), and the sheath 3 of the intermediate 3a is peeled off to form three. The insulated wire core 4 is exposed. Each of the insulated cores 4 has a core (conductor) 5b covered with a coating 5a. Further, as shown in FIGS. 2, 8 and 9 (c), the branch line cable 6 is a 3-core flat cable (VVF cable), and the sheath 7 of the terminal 7a is peeled off to provide three insulations. The core 8 is exposed. Each of the insulated cores 8 has a core (conductor) 9b covered with a coating 9a.

As shown in FIGS. 2, 3, and 4 (a), the cable holder 10 is made of synthetic resin and is formed in a flat T-shape. That is, the cable holder 10 has a first holder main body 11 extending in the longitudinal direction of the trunk cable 2, and a second holder main body 21 integrally protruding vertically from the center of the first holder main body 11. There is. Further, in the center of the first holder main body 11, there is a trunk line insulated core storage groove 12 for accommodating the three insulated cores 4 of the trunk cable 2.

As shown in FIGS. 4 (a), 4 (b), 9 (a), and 9 (b), the trunk line insulating core storage groove 12 of the first holder main body 11 of the cable holder 10 has three insulations of the trunk cable 2. It has a pair of separating ribs 13 and 13 that arrange the cores 4 at separate positions. The pair of separating ribs 13 and 13 are inclined to guide each insulating core 4 of the trunk cable 2 to the three trunk insulating core storage grooves 12 partitioned by the separating ribs 13 from their respective tops to the center of the outside. Each has a surface 13a.

Further, as shown in FIG. 3, in the trunk line insulated core storage groove 12 of the first holder main body 11, each pressure welding blade 33 for connecting the insulated wire core 4 of the trunk cable 2 of the three pressure welding terminals 30 described later is provided. A pressure welding blade storage groove 14 to be stored is formed. Further, the trunk line insulated core storage groove 12 of the first holder main body 11 is formed with a separation rib storage groove 15 in which each separation rib 44 for separation of each pressure welding terminal 30 of the cover 40, which will be described later, is stored.

Further, as shown in FIGS. 2 and 3, a pair of trunk line sheath accommodating portions 16 and 16 for accommodating the sheath 3 of the trunk line cable 2 are provided on both ends of the first holder main body 11 of the cable holder 10. .. Each trunk line sheath accommodating portion 16 has a holding arm (sheath holding portion) 17 for holding the sheath 3 of the trunk line cable 2. As shown in FIG. 9C, the holding arm 17 has a shape that matches the sheath 3 of the trunk cable 2, and the protrusion 17a inside the tip bites into the sheath 3 to mechanically hold the holding arm 17. It has a structure.

Further, as shown in FIGS. 2, 3, and 4 (a), the cover 40, which will be described later, is locked at two locations on the outer side of the center of the first holder main body 11 of the cable holder 10 and on both outer sides of the holding arm 17. Locking portions 18 to which the claws 47 are locked are formed.

As shown in FIGS. 2, 3, and 4 (a), the three insulated cores 8 of the branch wire cable 6 are housed on the side of the first holder main body 11 from the center of the second holder main body 21 of the cable holder 10. The three branch wire insulated core accommodating grooves 22 are provided in the direction perpendicular to the trunk line insulated core accommodating groove 12.

As shown in FIGS. 3 and 5, the branch line insulated core storage groove 22 located at the center of the three branch line insulated core storage grooves 22 is perpendicular to the trunk line insulated core storage groove 12. It extends in a straight line. Further, the branch line insulated core storage grooves 22 and 22 located on both sides thereof are bent in a V shape on the end side of the second holder main body 21 and are located in the center from the center to the trunk line insulated core storage groove 12 side. The branch wire is extended so as to be parallel to the insulated wire core accommodating groove 22. More specifically, as shown in FIG. 5, the branch line insulated core accommodating grooves 22 and 22 located on both sides are guided groove portions 22b in which the core introduction port 22a side is inclined and the diameter is expanded in a semicircular arc surface shape. ing. The remaining portion 22c other than the guide groove portion 22b is formed so as to be parallel to the branch line insulated wire core accommodating groove 22 located at the center. The guide groove portion 22b that is inclined and expanded in a semi-circular arc surface has a shape that guides the tip ends of the insulating cores 8 and 8 on both sides of the branch line cable 6 and can be easily and smoothly stored without rearranging. ing. That is, the distance between the branch wire sheath accommodating portions 26, which are the accommodating ports of the sheath 7 of the branch wire cable 6, is A, the distance between the centers of the bifurcated wire insulated core accommodating grooves 22 and 22 on both sides is B, and the diameter is expanded by inclining. When the length of the guided groove portion 22b is C, the shape is (BA) / 2: C = 1: 2 or more. Due to the shape having a certain ratio or more, as shown in FIGS. 10 and 11, when the three insulated cores 8 of the branch wire cable 6 are stored in the three branched wire insulated core storage grooves 22 of the second holder main body 21. In addition, the operator can manually store and wire the insulated wire cores 8 without adjusting them.

Further, as shown in FIG. 3, the three branch wire insulated core storage grooves 22 of the second holder main body 21 are connected to the insulated wire core 8 of the branch wire cable 6 of the three pressure welding terminals 30 described later. A pressure welding blade storage groove 24 in which the pressure welding blade 33 is stored is formed. Further, in the three branch line insulated core storage grooves 22 of the second holder main body 21, a separation rib storage groove 25 for storing each separation rib 44 for separation of each pressure welding terminal 30 of the cover 40, which will be described later, is formed. ing.

As shown in FIGS. 2 and 3, a branch wire sheath accommodating portion 26 for accommodating the sheath 7 of the branch wire cable 6 is provided on the end side of the second holder main body 21 of the cable holder 10. The branch wire sheath accommodating portion 26 has a holding arm (sheath holding portion) 27 for holding the sheath 7 of the branch wire cable 6. As shown in FIG. 9C, the holding arm 27 has a shape that matches the sheath 7 of the branch wire cable 6, and the protrusion 27a on the inner tip of the holding arm 27 is mechanically held by engaging with the sheath 7. It has a structure to do.

Further, as shown in FIGS. 2, 3, and 8, lock claws 47 of the cover 40, which will be described later, are locked to both outer sides of the center of the second holder main body 21 of the cable holder 10 and both outer sides of the holding arm 27. The locking portions 28 to be locked are formed respectively.

As shown in FIG. 6, the pressure welding terminal 30 is perpendicular to the top plate portion 31 having three fixing holes 32 and at both ends of the top plate portion 31 for connecting the main line cable 2 and connecting the branch line cable 6. Each pair of pressure welding blades 33, 33 provided so as to face a right angle is provided. That is, the pressure welding terminals 30 are inserted into both ends of the top plate portion 31 with respect to the insulated cores 4 of the main cable 2 and the insulated cores 8 of the branch cable 6, respectively. A pressure welding blade 33 that comes into contact with the cores (conductors) 5b and 9b while cutting the coatings 5a and 9a of 8 is provided. The pressure contact blades 33 provided at both ends of the top plate portion 31 are arranged so as to face each other at right angles for connecting the trunk line cable 2 and connecting the branch line cable 6. Further, the fixing hole 32 provided in the top plate portion 31 of the pressure welding terminal 30 is fitted and fixed in the pressure welding terminal fixing portion 43 provided in the cover 40. The method of fixing the pressure welding terminal 30 to the cover 40 may be insert molding or integral molding.

As shown in FIGS. 1, 2, 7, and 12, the cover 40 is made of synthetic resin and is formed in a flat T-shape. That is, the cover 40 is integrally projected from the center of the first cover main body 41, which is assembled to the first holder main body 11 of the cable holder 10, in the vertical direction, and is assembled to the second holder main body 21. It has a second cover main body 42 and.

As shown in FIGS. 7 and 12, each fixing hole 32 of the three pressure welding terminals 30 is fitted from the center of the back surface 41b of the first cover body 41 of the cover 40 to the base side of the back surface 42b of the second cover body 42. Each of the three columnar pressure welding terminal fixing portions 43 is provided in a parallel stepped shape. Further, at the upper and lower positions on both sides of each of the three pressure contact terminal fixing portions 43, separation ribs 44 that separate and protect each pressure contact terminal 30 are provided. When the cover 40 is assembled to the cable holder 10, the pressure welding blades 33 and the separation ribs 44 of the pressure welding terminals 30 fixed to the back surfaces 41b and 42b of the cover 40 are combined with the pressure welding blade storage grooves 14 and 24 of the cable holder 10. It is provided at a position corresponding to the separation rib storage grooves 15 and 25.

Further, as shown in FIGS. 7 and 12, a plurality of sheath holding ribs 45 for holding the sheath 3 of the trunk cable 2 are provided on both sides of the back surface 41b of the first cover main body 41 of the cover 40. Further, on the end side of the back surface 42b of the second cover main body 42 of the cover 40, a plurality of sheath holding ribs 46 for holding the sheath 7 of the branch line cable 6 are provided.

Further, as shown in FIGS. 2 and 12, the locking portions 18 of the first holder main body 11 are located on the outer sides of the center of the first cover main body 41 of the cover 40 and on the outer sides of both ends of the first cover main body 41. The lock claws 47 that are locked to the lock claws 47 are integrally projected. Further, on both outer sides of the base of the second cover main body 42 of the cover 40 and the outer side of the end portion of the second cover main body 42, lock claws 47 locked to the locking portion 28 of the second holder main body 21 are integrated. It is overhanging.

Then, when the cover 40 is fitted to the cable holder 10, the coating 9a of each insulating core 8 of the corresponding branch wire cable 6 and the coating 5a of each insulating core 4 of the trunk cable 2 are pressure-welded to each pressure welding terminal 30. After cutting with the blade 33, the pressure welding blade 33 comes into contact with the cores 5b and 9b of the insulated cores 4 and 8. As a result, in the middle 3a of the sheath 3 of the trunk cable 2, the three insulated cores 4 of the trunk cable 2 and the three insulated cores 8 of the branch cable 6 are electrically branched via the three pressure welding terminals 30. It is designed to be connected. As shown in FIG. 13, a lighting device 50 as a connecting device is connected to the other end side of the branch line cable 6 in which one end side is branched and connected in the middle of the trunk line cable 2.

As shown in FIGS. 2, 10 and 11, the middle cover 60 for preventing the line center from popping out is formed of synthetic resin into a plate shape having a size excluding the branch wire sheath accommodating portion 26 of the second holder main body 21. It covers the portion corresponding to the three branch line insulated wire core accommodating grooves 22. The middle cover 60 is formed with a stepped rectangular opening 61 that exposes the pressure welding blade storage groove 24 and the separation rib storage groove 25 when the three branch line insulated wire core storage grooves 22 are covered. Further, on both sides of the middle cover 60, lock claws 62 to be locked to the locking portions 29 provided on both sides of the second holder main body 21 are integrally formed. Then, as shown in FIG. 10, after the middle cover 60 is assembled to the second holder main body 21 via the lock claw 62, the tips of the three insulated wire cores 4 of the branch wire cable 6 are connected to the three branched wire insulated wires. It can be inserted from the core introduction port 22a of the core storage groove 22.

According to the cable branch connection structure 1 of the above embodiment, when connecting the terminal on one end side of the branch line cable 6 to the middle of the trunk line cable 2, first, as shown in FIGS. 2 and 8, the trunk line cable 2 The sheath 3 of the middle 3a of the above is peeled off to expose the three insulated wire cores 4. Similarly, the sheath 7 of the terminal 7a of the branch wire cable 6 is peeled off to expose the three insulated wire cores 8.

Next, as shown in FIG. 8, the three insulated cores 4 of the trunk cable 2 are stored in the trunk-insulated core storage groove 12 of the cable holder 10. Similarly, the sheaths 3 and 3 on both sides of the trunk cable 2 are housed in the pair of trunk sheath housing portions 16 and 16 on both ends of the first holder main body 11 of the cable holder 10. Further, the insulated wire core 8 of the branch wire cable 6 is housed in the three branch wire insulated core storage grooves 22 of the cable holder 10. Similarly, the sheath 7 of the terminal 7a of the branch line cable 6 is stored in the branch line sheath storage portion 26 of the cable holder 10. As a result, the trunk cable 2 and the branch cable 6 are wired in a T shape on the surface of the cable holder 10.

As shown in FIGS. 9A and 9B, when the insulated cores 4 of the trunk cable 2 are stored in the trunk-insulated core storage groove 12, the insulated cores 4 are formed on the inclined surface 13a of the separation rib 13. It is easily and surely stored in a regular position in each trunk line insulated core storage groove 12 guided and partitioned by the separation rib 13. As a result, when the cover 40 is assembled to the cable holder 10, the insulated wire core 4 is not sandwiched between the cable holder 10 and the cover 40, so that damage to the insulated wire core 4 can be prevented.

Further, as shown in FIGS. 10 and 11, after the middle cover 60 is assembled to the second holder main body 21, the tips of the three insulated cores 4 of the branch line cable 6 are inserted into the three branch line insulated core storage grooves. It is inserted from the core introduction port 22a of 22. By this insertion, the insulated wire cores 8 on both sides are smoothly stored in the back of the branched wire insulated wire core accommodating groove 22 without protruding from the branch wire insulated wire core accommodating groove 22 due to the guidance of the guide groove portion 22b. In this way, when the three insulated cores 8 of the branch wire cable 6 are stored in the three branched wire insulated core storage grooves 22, the operator manually stores the three insulated cores 8 without adjusting them. Therefore, the workability of assembling the branch line cable 6 can be further improved. Further, since the insulated wire core 8 of the branch wire cable 6 can be stored without being sandwiched between the second holder main body 21 and the cover 40, the insulated wire core 8 is not damaged or a connection failure is not caused, and the connection reliability is maintained. Can be further improved.

Further, as shown in FIGS. 2 and 9 (c), when the sheath 3 of the trunk line cable 2 is stored in the trunk line sheath storage portion 16, and the sheath 7 of the branch line cable 6 is stored in the branch line sheath storage portion 26. At that time, the sheaths 3 and 7 are securely held and fixed by the holding arms 17 and 27. As a result, when the cover 40 is being assembled, that is, when each pressure welding blade 33 of the pressure welding terminal 30 cuts the insulating cores 4 and 8 of the cables 2 and 6 and comes into contact with the cores 5b and 9b, the cables 2 and 2 6 is sufficiently fixed, and damage to the pressure welding blade 33 and damage to the cores 5b and 9b can be reliably prevented. That is, damage to the pressure welding blade 33 and damage to the cores 5b and 9b due to the movement of the cables 2 and 6 is eliminated, and contact failure and conduction failure between the pressure welding blade 33 and the cores 5b and 9b can be eliminated. It enables stable connection and keeps the connection quality high.

Then, as shown in FIG. 1, when the cover 40 to which the pressure welding terminal 30 is attached is assembled to the cable holder 10, the pressure welding blade 33 of the pressure welding terminal 30 has the insulated cores 4 and 8 of the trunk cable 2 and the branch wire cable 6. The coatings 5a and 9a of the above are cut and come into contact with the cores (conductors) 5b and 9b. By the contact between the pressure contact blade 33 and the cores 5b and 9b, the predetermined cores 5b and 9b of the trunk cable 2 and the branch line cable 6 are electrically connected. With this connection, the branch connection work of the cable can be easily performed in a short time.

As described above, in the cable branch connection structure 1, the wiring as shown in FIG. 11 is possible by using the branch connection connector including the cable holder 10 and the cover 40 to which the pressure welding terminal 30 is attached. Since the trunk line cable 2 and the branch line cable 6 can be prepared separately from this wiring method, the cable size of the branch line cable 6 can be made smaller than the trunk line cable 2 according to the allowable current of the lighting equipment 50. .. That is, the branch line cable 6 can be wired straight to the lighting device 50, and the wire length to the lighting device 50 can be shortened. Further, since the cable is connected to the lighting device 50 at one place, the construction time can be shortened and the construction can be performed in a short time.

Further, since the branch line cable 6 can be branched and connected to the trunk line cable 2 simply by assembling the cover 40 to the cable holder 10 after wiring the trunk line cable 2 and the branch line cable 6 to the cable holder 10 in a T shape, connection work is performed. No technology is required and construction is easy. That is, by fixing the three pressure welding terminals 30 to the back surface of the cover 40, when the cover 40 is assembled to the cable holder 10, the pressure welding blades 33 of the three pressure welding terminals 30 are attached to the cores 5b of the cables 2 and 6. , 9b can be connected at the same time, improving the workability of the connection. Further, since the cables 2 and 6 can be connected to the cores 5b and 9b at the same time, the working time at the time of construction can be reduced.

Further, as shown in FIG. 13, since the branch line cable 6 is branched from the wired trunk line cable 2 and connected to the lighting device 50, the trunk line cable 2 can be wired regardless of the installation of the lighting device 50. .. Therefore, it is possible to wire the branch line cable 6 in advance before installing the lighting device 50, which increases the degree of freedom in construction.

Further, as shown in FIG. 12, since the separation rib 44 that separates the pressure welding terminal 30 is arranged around the pressure welding terminal 30 on the back surface of the cover 40, unexpectedly before assembling the cover 40 to the cable holder 10. It is possible to prevent damage or deformation of the pressure welding terminal 30 due to various factors. Further, after assembling the cover 40 to the cable holder 10, it is possible to secure a space distance between the pressure welding terminals 30 and improve the insulation performance.

Although the present embodiment has been described above, the present embodiment is not limited to these, and various modifications can be made within the scope of the gist of the present embodiment.

That is, according to the above embodiment, a 3-core flat cable (VVF cable) is used for both the main cable and the branch line cable, but a 2-core flat cable or a flat cable having 4 or more cores including a ground wire may be used. , The cable does not have to be flat.

Further, according to the above-described embodiment, the number of pressure welding blades of the pressure welding terminal is two for the insulated wire core of one cable, but one blade or three or more blades may be used.

Further, according to the above-described embodiment, the middle cover and the cable holder are combined, but the middle cover and the cable holder may be integrated into one component via a hinge.

Further, according to the above embodiment, the cover and the middle cover are made of synthetic resin, but the cover and the middle cover may be made of transparent synthetic resin so that the wiring color of the cable can be confirmed.

Further, according to the above embodiment, the lighting device is connected to the branch line cable, but the connecting device connected to the branch line cable is not limited to the lighting device, and other connecting devices such as an outlet may be used.

1 Cable branch connection structure 2 Trunk cable 3 Sheath 3a Intermediate 4 Insulated core 5a Coating 5b Core (conductor)
6 Branch wire cable 7 Sheath 7a Terminal 8 Insulated wire core 9a Covered 9b Wire core (conductor)
10 Cable holder 12 Trunk line insulated wire core storage groove 22 Branch line insulated wire core storage groove 22a Wire core introduction port 22b Inclined groove part (guide groove part) with an inclined diameter
22c Remaining part 26 Branch line Sheath storage part (sheath storage port)
30 Insulation terminal 33 Insulation blade 40 Cover 60 Middle cover A Branch wire sheath width C Induction groove length

Claims (5)

A trunk cable with an intermediate sheath peeled off to expose multiple insulated cores,
A branch wire cable with multiple insulated cores exposed by peeling the sheath of the terminal,
The trunk line insulated core storage groove has a trunk line insulated core storage groove for accommodating a plurality of insulated cores of the trunk cable, and the branch wire insulated core storage groove for accommodating a plurality of insulated cores of the branch wire cable. With a cable holder held in the direction perpendicular to the
A plurality of pressure welding terminals having a pressure welding blade for pressure welding and connecting a plurality of insulated cores of the trunk cable and a plurality of insulated cores of the branch wire cable.
Equipped with
The branch line insulated wire core accommodating groove is a cable branch portion connecting structure having a guide groove portion for guiding the insulated wire core of the branch line cable. The number of the branch line insulated core accommodating grooves is formed corresponding to the number of the insulated wire cores of the branch line cable, and the branch line insulated core accommodating groove located at the center is formed linearly and is located on both sides. The branch line insulated core storage groove is a guide groove portion whose diameter is expanded by inclining the core introduction port side, and the remaining portion is parallel to the branch line insulated core storage groove located in the center. The cable branch connection structure according to claim 1, which is formed so as to be. The cable branch connection structure according to claim 2, wherein the distance between the branch wire sheath accommodating portions, which are the accommodating ports of the branch wire cable sheath, and the distance of the inclined and expanded guide groove portions are equal to or more than a certain ratio. .. Equipped with a cover that can be attached to the cable holder
The plurality of pressure welding terminals are attached to the back surface of the cover, and the plurality of pressure welding terminals are attached.
When assembling the cover to the cable holder, each coating of the plurality of insulated cores of the trunk cable and each coating of the plurality of insulated cores of the branch wire cable corresponding to each coating of the plurality of insulated cores of the trunk cable are coated with each of the pressure welding blades of the plurality of pressure welding terminals. The cable branch connection structure according to any one of claims 1 to 3, wherein the cores of the corresponding insulating cores and the pressure welding blades are electrically connected by contacting each other while cutting. .. A middle cover for preventing the core from popping out, which is assembled between the portion corresponding to the branch wire insulated core storage groove of the cable holder and the cover, is provided.
After assembling the middle cover to the portion of the cable holder corresponding to the branch wire insulated core storage groove, the insulated core of the branch wire cable is stored in the branch wire insulated core storage groove. Item 4. The cable branch connection structure according to Item 4.

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