JPS5929332Y2 - Branch connector - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an improvement of a branch box.

As shown in the schematic cross-sectional view in Figure 1 of the attached drawings, a conventional branch box for telephones has a wiring board 2 inside a case 1 with a large number of clip terminals arranged in two rows for incoming construction wiring. A telephone receptacle connector 4 is provided on the outer surface of the case 1 to be used as a terminal row and a terminal row for output construction wiring, and a wire is provided between the wrapping post 3A of the clip terminal 3 and the solder terminal 4A of the telephone receptacle connector 4. The wires were appropriately connected in advance by wrapping and soldering with the back wiring wire 5, respectively.

In order to branch to a telephone using such a conventional branch box, the installer must connect each coated thin wire of the incoming and outgoing telephone cables one by one to the clip portion 3B of the corresponding clip terminal 3. The branch box is placed on a suitable wall by pushing it in using a tool, and the telephone plug 6 is connected to the telephone receptacle connector 4.

This kind of connection work of the incoming cable and the outgoing cable to the clip terminal 3 is very time-consuming and complicated, and the clip terminal 3 is a relatively large terminal. If a large number of branch boxes had to be used, not only the material cost would increase, but the thickness of the branch box would also increase.

The purpose of the present invention is to eliminate the drawbacks of the conventional branch box as described above, and to provide a compact branch connector that allows connection work to be performed easily and reliably. The present invention will be described in detail with respect to an embodiment of the present invention based on FIG.

FIGS. 2 and 3 show a branch connector as an embodiment of the present invention in a plan view and a front view with the cover removed.

This branch connector consists of a case 10 and a case 10.
Entry side construction connection stand 20 and exit side construction connection stand 3 installed in
0, and a telephone receptacle connector 40 as a branch device connector.

The case 10 is provided with recesses 11, 12, and 13 for allowing each of the inlet cable, the outlet cable, and the branch device cable to be introduced into the case 10.

The entry-side work connection stand 20 and the exit-side work connection stand 30 may have the same structure, and one embodiment of the invention is shown in side and front views in FIGS. 4A and 4B.

The wiring board of the embodiment shown in FIG.
It consists of terminal array insulators 21 arranged in rows, and thin wire push-in insulators 26 that engage with the terminal array insulators 21 to connect each thin wire of the cable to the contact 50.

A plurality of horizontal grooves 22 are provided on the upper surface of the terminal array insulator 21 to receive each thin wire of the cable to be connected.

As shown in the cross-sectional view of FIG. 5, the terminal array insulator 21 also has recesses 2 corresponding to the respective lateral grooves 22 that open into the lateral grooves 22 for installing the contacts 50.
3 and a through hole 24 that continues to the recess 23 is provided.

Furthermore, locking shoulders 25 are provided at both ends of the terminal array insulator 21.

FIG. 6 shows the contact 50 in detail in a perspective view.

The contact 50 is integrally formed of a conductive material and includes a thin cable contact portion 51 and a connection post 52.

At both ends of the top of the thin cable wire contact section 51, protrusions 51a that penetrate the thin cable wire are provided, and on both sides of the wire connection post 52, locking protrusions are provided.

In such a contact 50, as shown in FIG.
The terminal array insulator 21 is inserted into the terminal array insulator 21 so that its end portion protrudes from the bottom surface of the terminal array insulator 21 .

In this state, the projection 51a of each contact 50 slightly protrudes toward the lateral groove 22 so that the thin cable wire inserted into the lateral groove 22 can pass through the coating and come into contact with the core wire.

Further, the locking protrusion 52 a of the contact 50 tightly engages with the side wall of the through hole 24 to fix the contact 50 to the terminal array insulator 21 .

On the other hand, the bottom surface of the thin wire push-in insulator 26 is provided with a plurality of horizontal ridges 27 that are inserted into the corresponding lateral grooves 22 of the terminal array insulator 21, as shown in FIGS. 4 and 5. .

Further, at both ends of the thin wire push-in insulator 26, there are provided locking shoulders 25 at both ends of the terminal array insulator 21 to lock the connection between the terminal array insulator 21 and the thin wire push-in insulator 26. A locking arm 28 is provided.

As an embodiment of the present invention, the entry side construction wiring board 20 and the exit construction wiring board 30 configured as described above and the telephone receptacle connector 40 are installed in the case 10 as shown in FIGS. 2 and 3. The part of the wiring post 52 protruding from the bottom of the terminal array insulator 21 of the contact 50 of the wiring board in the branch connector and the terminal of the telephone receptacle connector 40 may be formed by wrapping or soldering with back wiring wire material, for example. You may connect the wires appropriately in advance, or
Alternatively, appropriate printed wiring may be performed in advance using a printed circuit board or the like.

In order to branch to a telephone using the above-described branching connector of the present invention, the construction worker must connect the incoming telephone cable and the outgoing telephone cable to the recesses 11 and 1 of the case 10.
2 into the case 10 and connect each of these thin wires to each corresponding contact 50.

This connection work will be explained in detail with reference to FIG.

As shown in FIG. 5, first, the thin wire push-in insulator 26 is removed from the terminal array insulator 21.
Insert each thin wire 61 of the cable 60 one by one into each horizontal groove 22 as shown in the figure.

Next, the thin wire push-in insulator 26 is pushed toward the terminal array insulator 21 so that its lateral ridge portion 27 is inserted into each corresponding lateral groove 22 .

At this time, as shown in the partially enlarged view in Fig. 7, each horizontal groove 2
2, the thin wire 61 inserted into the horizontal ridge 21 and the horizontal groove 22
The bottom surface 22a of the horizontal groove 22 is sandwiched between the bottom surface 22a of the lateral groove 22
The protrusion 50a of the contact 50 that protrudes more than the thin wire 6
The core wire 61a is penetrated through the covering 61b of the first wire and electrically contacted therewith.

After performing such operations on the incoming and outgoing cables, the telephone plug is connected to the telephone receptacle connector 40, and the branching work for the telephone is completed.

FIG. 8 shows, in a partial perspective view, an embodiment of a contact different from the contact 50 illustrated in FIG.

The contact 70 of this embodiment has a cable thin wire contact portion 7
A protrusion 72 having a pyramid-shaped tip 72a at both ends of 1.
are provided, and those protrusions 72 are twisted at a certain angle with respect to the entire surface of the cable thin wire contact section 71.

The contact 70 of FIG. 8 is particularly suitable for cases where the cable is a twisted core of thin cables.

FIG. 9 shows that the contact 80 in FIG.
The plan view shows a state in which the core wire 61a' is pierced through the covering 61b of No. 1.

As shown in FIG. 9, when the protrusion 72 of the contact 70 is twisted almost at right angles to the twisting direction A of the twisted core wire 61a' of the thin wire 61, the core wire and the contact This makes contact more reliable and effective.

As described above, according to the present invention, cable wiring on the input side and output side can be done at once by simply pushing the thin wire push-in insulator 26 into the terminal array insulator 21, which simplifies branching work. can be done.

Furthermore, since the contacts 50 and 70 can be made very compact, the entire branch connector can be made very compact.

The above explanation was for the case where it is used for branching telephones, but the branching connector according to the present invention can also be used for branching for educational equipment, etc., where it is necessary to branch out a large number of slave units from the main line. It is applicable.

Further, in the above description, only one telephone connector is provided, but it is also possible to provide a plurality of such connectors in the same manner.

[Brief explanation of drawings]

FIG. 1 of the accompanying drawings is a schematic sectional view illustrating a conventional branch end, and FIGS. 2 and 3 are a plan view and a front view showing a branch connector as an embodiment of the present invention with the cover removed. , FIGS. 4A and 4B are a side view and a front view showing an embodiment of a wiring board according to the present invention used in a branch connector, and FIG. 5 is an example of connecting a thin cable wire to the wiring board of FIG. 4. 6 is a perspective view showing an embodiment of the contact according to the present invention used in a branching connector, and FIG. An enlarged sectional view, FIG. 8 is a partial perspective view showing another embodiment of the contact according to the present invention used in a branching connector, and FIG. 9 is a plan view showing the state of connection between the contact shown in FIG. 8 and a thin cable wire. It is.

Claims (1)

[Scope of utility model registration request] A case having recesses 11, 12, and 13 that allow each of the inlet cable, the outlet cable, and the branch device cable to be introduced into the case 10, and the inlet construction wiring board 20 juxtaposed to the case; It is equipped with an exit construction wiring board 30 and a branch device connector 40, and each wiring board includes a terminal arrangement insulator 21 provided in the case 10,
It consists of a thin wire push-in insulator 26 that can compete for coupling with the terminal array insulator 21, and a plurality of contacts 50 installed on the terminal array insulator 21. Each thin wire 61 of the cable 60 to be connected
A lateral groove 22 is provided for inserting the contact 50 into the lateral groove 22, and each contact 50 has a portion 51 projecting into each lateral groove 22.
a and a portion 52 exposed on the bottom surface of the terminal array insulator 21, and the thin wire push-in insulator 26 has a plurality of horizontal ridge portions 27 that are pushed into each lateral groove 22 of the terminal array insulator 21. Each connection stand 20, 3 is provided.
A branch characterized in that a back wiring necessary for branching is provided between a portion 52 of the contact 50 of No. 0 exposed on the bottom surface of the terminal array insulator 21 and the terminal of the branch equipment connector 40. Connector for