JP2000032632A - Cable connection structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To connect a plurality of cables to each other without erroneous connections and resulting in satisfactory connectability. SOLUTION: A connection structure 1 has a junction box main part 2, in which mating parts 23a, 23b, 24a and 24b are formed so as to face each other and guide walls 17a, 17b, 18a and 18b, in which guide grooves 21a, 21b, 22a and 22b are formed respectively are formed in front of the respective mating parts. Furthermore, compression joint terminals 31 are fixed to the predetermined positions on the lower surface of a junction box cover 3. Cable conductors 6a, 6b, 7a and 7b are inserted into the guide grooves 21a, 21b, 22a and 22b. In this state, if the junction box cover 3 is closed, the cable conductors 6a, 6b, 7a and 7b arranged so as to face each other are electrically connected to each other alltogether with the compression joint terminals 31 without erroneous connections.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable connection structure used for connecting cables in indoor wiring and electric equipment, and more particularly, to preventing erroneous connection of cables and improving workability in connection work. The present invention relates to a cable connection structure.

[0002]

2. Description of the Related Art Conventionally, a large number of cables and joint boxes or the like for central connection are used for indoor wiring for supplying power to houses and buildings. For example, Japanese Utility Model Laid-Open Publication No. Sho 59-173419 discloses a joint box with a connector. As shown in FIG. 6, the connector unit 44 includes a plurality of connectors 40, 41,
42 and 43 are provided, and connectors in the same row are connected in the connector unit 44, respectively.

Here, for example, two cables 53, 54
When the cables are connected behind a ceiling or the like, one conductor 55 of the cable 53 is inserted into the connection hole of the connector 42, and the other conductor 56 is inserted into the connection hole of the connector 41. Then, one conductor 57 of the cable 54 is inserted into the connection hole of the connector 42, and the other conductor 58 is inserted into the connection hole of the connector 41. Therefore, the cables 53, 54
One of the conductors 55 and 57 is electrically connected,
The other conductors 56, 58 are also electrically connected.

Next, when forming a switch circuit, the two conductors 60 and 61 of the cable 59 connected to the power supply are inserted into the connection holes of the connectors 40 and 41. Then, the two conductors 63 and 64 connected to the contact switch 62 are inserted into the connection holes of the connectors 41 and 43. Further, the conductors 66 and 67 connected to the lamp 65 to be opened / closed are inserted into the connection holes of the connectors 40 and 43. This allows
When the contact switch 62 is closed, the lamp 65 is turned on, and when the contact switch 62 is opened, the lamp 65 is turned off. Therefore, according to the joint box with a connector, the connectors 40, 41,
The cables 53 and 54 can be electrically connected by the connector 42.
The lighting control circuit of No. 5 can also be configured.

[0005]

However, in the joint box with a connector, the conductors 55 and 57 and the conductors 56 and 57 of the cables 53 and 54 are located in a narrow place such as the ceiling.
It is necessary to perform the peeling work of 58 and the connecting work to the connectors 40, 41 and 42. A similar operation is required for the switch circuit of the lamp 65. Therefore,
Since it is necessary to peel and connect individual conductors,
There were problems such as an increase in the number of work steps and erroneous connection.

An object of the present invention is to provide a cable connection structure for connecting a plurality of cables without erroneous connection and with good workability.

[0007]

SUMMARY OF THE INVENTION The object of the present invention is to provide a fitting portion for positioning a cable conductor exposed at the end of a cable in a facing state, and to separate the cable conductor in front of the fitting portion. A joint box main body provided with a guide groove for positioning the joint box, and a joint box lid provided with a press-contact terminal for electrically connecting the opposing cable conductor among the cable conductors positioned in the guide groove. This can be solved by a cable connection structure characterized in that: In the cable connection structure, preferably, the electrical connection of the cable conductor is performed by covering the joint box body with the joint box cover.

According to the cable connection structure having the above-described structure,
A fitting portion for separately inserting a plurality of cables into the joint box body and positioning the cables so that the distal ends thereof face each other is provided, and a guide groove for individually positioning the cable conductor exposed at the distal end of the cable is provided in front of the fitting portion. Is formed. In addition, a pressure contact terminal is provided on a joint box lid that covers the joint box body. Therefore, when the cable is inserted from the fitting portion and the joint box cover is put on the joint box body with the exposed cable conductor inserted into the guide groove, the cable conductor is connected by the press-connecting terminal.

In the above cable connection structure,
Preferably, a projection is provided on the joint box lid to press the cable fitted to the fitting portion so that the cable cannot come out. According to the cable connection structure having the above-described configuration, the cable inserted into the fitting portion is pressed against the joint box body by the projection, so that the cable is reliably prevented from coming off.

[0010]

Next, an embodiment of a cable connection structure according to the present invention will be described in detail with reference to FIGS. FIG. 1 is an exploded perspective view showing a cable connection structure of the present embodiment, FIG. 2 is a perspective view showing a configuration of a press contact terminal in FIG. 1, and FIG. FIG. 4 is a cross-sectional view showing a positional relationship.
FIG. 5 is a cross-sectional view showing a state in which the press contact terminal is fixed to the lid in FIG. 1, and FIG. 5 is a cross-sectional view showing a connection operation of the cable in FIG. 1.

As shown in FIG. 1, cable connection structure 1
Is the joint box body (hereinafter simply referred to as the body)
2 and a joint box cover (hereinafter simply referred to as a cover) 3 that covers the entire body 2. After the cables 4a, 4b, 5a, and 5b are inserted from both sides of the main body 2 and positioned, the lid 3 is closed to close the lid 3.
Are electrically connected to the cables 4a, 5a and the cables 4b, 5b, which are opposed to each other by the press contact terminal 31 fixed to the terminal. Although the type of each cable is not particularly limited, the cable conductors 6a, 6b, 7a, 7b are respectively made of cable insulators 8a, 8b, 9a, 9b such as vinyl.
And a cable sheath 11 in units of three.
a, 11b, 12a, and 12b.

The main body 2 is formed by integrally molding a synthetic resin, and the main body 2 is not provided with a connector terminal or the like. Relatively thick walls 15a and 15b are formed on both opposite ends of the main body 2, and a relatively thin partition wall 16 is provided at an intermediate position between the two walls. The four guide walls 17a, 17b, 18a, and 1 partition a vertically long space formed by the walls 15a and 15b and the partition wall 16.
8b is formed integrally with the main body 2. Guide grooves 21a, 21b, 22 for inserting and positioning the cable conductors 6a, 6b, 7a, 7b in the respective guide walls.
a and 22b are formed. In addition, both wall portions 15a, 1
The four spaces at the longitudinal ends of the main body 2 formed by the partition walls 5b and the partition walls 16 are cables 4a, 5a and 4b, 5b.
Fitting portions 23a, 23b, 2 for fitting and holding
4a and 24b are formed.

As shown in FIG. 1 to FIG.
Is formed by integrally molding a synthetic resin into a substantially plate-like shape, and has six press-contact terminals 31 provided on the lower surface thereof. The press contact terminal 31 is formed by forming a conductive material such as a metal plate into a U-shape, and press-connecting blades 33a, 3b on bent portions 32a, 32b on both sides.
3b. The press contact terminal 31 is
3a, 33b are positioned and attached to the lower surface of the lid 3 so that the center positions of the guide grooves 21a to 22b match the formation intervals L1, L2, L3, L4,. Although FIG. 3 shows the positional relationship of the three press contact terminals 31 corresponding to the guide grooves 21a, the positional relationship can be changed according to the number of the guide grooves 21a.

As shown in FIGS. 4 and 5, with respect to the mounting position in the longitudinal direction, the bent portion 32a is
The dimensions are set so that the bent portion 32b is located substantially at the center of the guide walls 18a and 18b.

Next, a procedure for connecting the cables 4a, 5a and 4b, 5b by the cable connection structure 1 will be described. First, the cable insulator 8 of each of the cables 4a to 5b
Strip a to 9b to expose the cable conductors 6a to 7b. The exposed length of the cable conductor 6a is set slightly longer than the interval between the guide walls 17a and 17b. The exposed length of the cable conductor 7a is determined by the guide wall 18a,
It is exposed slightly longer than the interval between 18b. Each of the cables 4a to 5b is inserted into each of the fitting portions 23a to 24b, and the cable conductors 6a and 6b are
1a and 21b. Since the upper ends of the guide grooves 21a to 22b are opened, the inserting operation can be performed easily and quickly.

As a result, the cable conductors 7a, 7b are positioned in the guide grooves 22a, 22b formed at a predetermined interval, and the cable conductors 6a, 6b are also positioned in the guide grooves 21a, 21b.
Positioned between 21b. That is, although the respective cable conductors 6a to 7b are not electrically connected, the cable conductors 6a and 7a are arranged to face each other, and the cable conductors 6b and 7b are not connected.
b are arranged to face each other.

Next, the cover 3 is put on the main body 2 from above, and screws 26 are inserted through the insertion holes 25 formed in the four corners of the cover 3 and screwed into the screw holes 27 formed in the main body 2. Thereby, the main body 2 and the lid 3 are integrated, and the cable conductor 6a
To 7b are connected by the press contact terminal 31, and the cable 4
a to 5b are electrically connected. That is, since the press contact terminals 31 are fixed to the lower surface of the lid 3 corresponding to the guide grooves 21a to 22b, the bent portion 32a is formed by overlapping the main body 2 and the lid 3 and integrating them. Wall 21
a between the guide wall 2 and the bent portion 32b.
It is inserted between 2a and 22b. And the press contact blade 33a
Bites into the cable conductors 6a, 6b, and the press-contact blade 33b bites into the cable conductors 7a, 7b.

Accordingly, the three cable conductors 6a and 7a disposed opposite to each other are individually electrically connected by the three press contact terminals 31, and the three cable conductors 6b and 7b disposed opposite to each other are connected to three press contact members. The terminals 31 are individually electrically connected. In this state, the locking projections 35a and 35b formed on the lid 3 are connected to the cable sheaths 11a to 12b.
Is pressed downward from above, so that the cables 4a to 5b cannot come out of the fitting portions 23a to 24b. Also,
A guide groove 28 is formed in the lid 3.
The main body 2 and the lid 3 are positioned by integrating the partition wall 16 with the partition wall 16. Therefore, the main body 2 and the lid 3 can be easily integrated, and the cable conductors 6a to 7b opposed to each other can be electrically connected all at once without erroneous connection. .

[0019]

As described above, the cable connection structure according to the present invention has a fitting portion for positioning the cable conductor exposed at the end of the cable in an opposed state, and a cable conductor in front of the fitting portion. A joint box main body provided with a guide groove for individually positioning the cable box, and a joint box lid body provided with a press-contact terminal for electrically connecting an opposing cable conductor among the cable conductors positioned in the guide groove. . Further, the electrical connection of the cable conductor is performed by covering the joint box body with a joint box cover. Therefore, by inserting the cable from the fitting part and covering the joint box cover on the joint box body with the exposed cable conductor inserted into the guide groove, the joint conductor is integrated with the cable conductor by the crimping terminal together with the joint box. Can be connected. Therefore, since the cable conductor is positioned in advance by the guide groove and the position of the press contact terminal is also determined, the cable conductor is not erroneously connected, and workability can be improved and erroneous connection can be reliably prevented. .

Further, a projection is provided on the joint box lid to press the cable fitted to the fitting portion so that the cable cannot come out. Therefore, the cable inserted into the fitting portion is pressed against the joint box main body by the projection, so that the cable is reliably prevented from coming off. Therefore, a highly reliable cable connection structure can be obtained.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a cable connection structure according to the present invention.

FIG. 2 is a perspective view showing a configuration of a press contact terminal in FIG.

FIG. 3 is an enlarged sectional view showing a positional relationship between a press contact terminal and a guide groove in FIG. 1;

FIG. 4 is a cross-sectional view of the lid showing a state in which the press contact terminal in FIG. 1 is fixed.

FIG. 5 is a sectional view showing a connection state of the cable conductor in FIG. 1;

FIG. 6 is an explanatory view showing an example of a conventional joint box with a connector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cable connection structure 2 Joint box main body 3 Joint box lid 4a, 4b, 5a, 5b Cable 6a, 6b, 7a, 7b Cable conductor 8a, 8b, 9a, 9b Cable insulator 17a, 17b, 18a, 18b Guide wall 21a, 21b, 22a, 22b Guide groove 23a, 23b, 24a, 24b Fitting part 31 Pressure contact terminal 33a, 33b Pressure contact blade 35a, 35b Projection

Claims (3)

[Claims] A joint box body provided with a fitting portion for positioning the cable conductor exposed at the end of the cable in a facing state and a guide groove in front of the fitting portion for individually positioning the cable conductor; Of the cable conductors positioned in the guide groove,
And a joint box cover provided with a press-contact terminal for electrically connecting the opposed cable conductors. 2. The electric connection of the cable conductor is performed by covering the joint box body with the joint box cover.
Connection structure of the cable described. 3. The joint box lid has a projection which presses the cable fitted to the fitting portion to prevent the cable from coming out.
Connection structure of the cable described.