JPH064538Y2 - Rosette - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION-Industrial field-The present invention relates to the structure of a portion for connecting a terminal device such as a telephone to a cable, and in particular, a rosette for connecting a modular plug of the terminal device to a cable such as a communication line. Concerning the structure of.

-Prior art-As is well known, in equipment such as telephone devices, for example, multifunctionalization and digital communication are being attempted as seen in button telephone systems, and along with this, there is a demand for miniaturization of the equipment. Is being realized along with the improvement of reliability by downsizing of electric parts, that is, LSI.

However, since the connection relay portion of the premises cable of equipment such as a telephone device has a connection structure as shown in FIGS. 4 to 6 described below, it is difficult to simplify the connection work. . That is, FIG. 4 shows a rosette that is often used in a wiring board of a terminal device. In the rosette, each cable core wire A has a corresponding fixing screw C arranged on the terminal board B in a state where the tip coating is removed. It is individually wrapped around and fixed. Further, FIG. 5 shows a terminal with a slit that does not need to be stripped, and at this terminal G, a cable core A that is still coated is hooked at the entrance of the slit H, and a dedicated tool I having a blade i shown in FIG. By operating in the direction of the arrow, the core wire of the cable core wire A is exposed and contacted, and at the same time, the excess tip portion of the cable core wire A is cut.

-Problems to be solved by the invention- However, in these conventional rosette structures, since it is necessary to individually connect a large number of cable core wires A of the cable, there is a possibility of erroneous connection, and a screw for connection is required. Even if a special tool such as a driver or a special tool I has to be used, and a troublesome long-time work is inevitable, and reconnection is required for the convenience of the user, it cannot be easily reconnected. It was Since these connecting works are individual connecting works on the wiring board, it is necessary to secure a space for the work around the wiring board for the wiring work. However, miniaturization such as is restricted. Furthermore, in these rosette structures, the treatment of insulating coating waste and tip excess length waste is troublesome.

By the way, in recent terminal devices used for communication lines, many are connected to communication lines by standardized modular plugs.

SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the conventional rosette described above, and to obtain a rosette in which a terminal device connected to a modular plug can be easily connected to a cable such as a communication line.

-Means for Solving the Problems-To achieve this object, the present invention proposes another connector insertion for receiving the tip of a modular plug on the surface and a plug portion of a connector plug for connecting a cable. The rosette body with the mouth formed on the back side and the modular side extended into the modular insertion port corresponding to the modular plug so that it can be elastically pressed against the contactor at the tip corner of the modular plug when the modular plug is inserted. A plurality of "U" shape having an end portion, a connector side end portion introduced into the inside of the connector insertion opening in a state of being extended in the length direction of the connector insertion opening, and an intermediate portion fixed to the rosette body. Of the contact pieces and a plurality of contact terminals capable of contacting the connector-side ends of these contact pieces, and a plug base and an exposed surface of the plug base. And a connector plug having a plug cover that can be fitted and fixed to the plug base in a state of covering the connection terminal,
A two-pronged inner end portion with an inner blade, which is projected on the exposed surface of the plug base and is capable of breaking the coating of the cable core wire exposed on the corresponding surface of the plug cover when the plug cover is pressed against the plug base and contacting the core wire. It is a proposal for a rosette.

-Embodiment- Hereinafter, the embodiment of the present invention will be described in detail with reference to Figs.

1 to 3 show a connecting portion structure according to an embodiment of the present invention. This connecting portion structure includes a modular plug 2 at a tip portion of a cable 1 of a terminal device such as a telephone, and a communication line by a method described later. Connector plug 4, which connects to the cable core 3,
It is composed of a removable rosette body 5 which connects between the connector plug 4 and the modular plug 2. That is, the modular plug 2 has a plurality of contacts 2 at its tip corners.
The rosette body 5, which has a standardized normal structure having a and is made of an electrically insulating resin, has a modular insertion port 5a for receiving the tip of the modular plug 2. Further, the rosette body 5 has a connector insertion port 5b into which the plug portion 4a of the connector plug 4 can be inserted from the opposite direction of the modular plug 2, and the rosette body 5 has a "U" shape aligned in the width direction. The contact piece 6 is integrally formed with the middle part fixed. The end portions 6a of the contact pieces 6 on the connector side are contact terminals 7 of the connector plug 4.
It is made to project in the central part of the connector insertion port 5b so that it can contact with. Further, the modular side end portion 6 of the contact piece 6
b is extended into the modular insertion opening 5a as the arrangement pitch shown in FIG. 3 so as to elastically contact the contactor 2a of the modular plug 2. The connector plug 4 for connecting the cable core wire 3 of the communication line is provided with an insulating resin plug base 8 and a plug cover 9 which can be assembled with each other, as shown in a sectional view in FIG. That is, the plug base 8 has a hollow plug portion 4a which can be inserted into the connector insertion opening 5b of the rosette body 5, and this plug portion 4a
A plurality of connecting terminals 7 capable of elastically contacting the connector side ends 6a of the plurality of contact pieces 6 arranged in the connector insertion opening 5b of the rosette body 5 are accommodated therein. . The base 4b of the plug base 8 having an open surface facing the plug cover 9 has the forked inner end 7a of the connection terminal 7 bent at a right angle to the plug cover 9 mounting direction. And the cable core 3 can be received between the opposing blades of each of the bifurcated inner ends 7a. That is, these two-forked inner end portions 7a have inner teeth on the inner surface, and therefore, when the cable core wire 3 is pushed into these two-forked inner end portions 7a, the coating of the cable core wire 3 is removed. The broken inner end portion 7a comes into contact with the core wire of the cable core wire 3, and the electrical connection between the cable core wire 3 and the connection terminal 7 is obtained.

Further, the plug cover 9 which can be fitted into the base portion 4b of the plug base 8 has a plurality of insertion holes 10 into which the tip portions 3a of the corresponding coated cable cores 3 can be respectively inserted. The corresponding cable core wire 3 of the cable whose correspondence is distinguished by the color or pattern of the coating is inserted. The plug cover 9 has an inner surface pressing portion 9a forming a groove 11 for receiving the bifurcated inner end portion 7a. The inner surface pressing portion 9a is a tip portion 3a of the cable core wire 3 inserted from the insertion hole 10. When the plug base 8 and the plug cover 9 are assembled in the direction indicated by the arrow in FIG. 2, the tip portion 3a of the cable core 3 which receives the side surface is deeply penetrated into the forked inner end portion 7a by the inner surface pressing portion 9a. By this invasion, the coating is cut and the inner end portion 7a of the fork and the core wire of the cable core wire 3 are connected.

Since the structure of the connecting portion of the communication line according to the embodiment is as described above, the modular plug 2 and the connector plug 4 are modularly inserted into the rosette body 5 after the cable core wire 3 is preliminarily connected to the connector plug 4. The connection work can be completed simply by connecting the connector to the port 5a and the connector insertion port 5b. That is, when connecting the cable core wire 3 of the communication line to each connector plug 4, a plurality of cable core wires 3 can be simultaneously connected to the connector plug 4 without using a special tool. More specifically, in order to process the plurality of cable core wires 3 of the communication line, the tip portions 3a of the corresponding cable core wires 3 are respectively inserted into the insertion holes 10 of the plug covers 9 forming the respective connector plugs 4, and the plug base 8 and The plug cover 9 may be strongly pressed in the direction of the arrow in FIG. In this pressing step, the cable core wire 3 is pressed by the inner surface pressing portion 9a in the direction of the arrow, but the coating of the cable core wire 3 is automatically cut by the opposing blade of the bifurcated inner end portion 7a.
A part of the core wire of the cable core wire 3 is exposed, and the exposed portion is 2
Further, the inner end portion 7a is closely attached. Therefore, the simultaneous connection between the plurality of cable core wires 3 and the corresponding connection terminals 7 is completed by the contact between the two-pronged inner end portion 7a and the exposed core wire of the cable core wire 3, but in the case of reconnection. In order to remove the plug core 9 from the plug base 8 and move the cable core wire 3 in the direction opposite to the arrow to separate the cable core wire 3 from the connection terminal 7, the cable core wire 3 of another communication line.
Can be reconnected quickly.

Although not mentioned in the description of the embodiment, if a large number of rosette bodies are provided inside the relay connection body case of the communication line, after connecting the cable core wire to the connector plug outside the rosette body, It goes without saying that the installation work of the multiple rosette body can be completed simply by inserting the connector plug into the rosette body.

-Effect of the Invention-As is apparent from the above description, according to the present invention, it is possible to remove the modular plug from the cable of the terminal device without removing the modular plug.
Terminal equipment can be easily connected to the communication line using the rosette body and connector plug. In this connection structure, a small-sized multi-piece rosette body or the like can be formed in proportion to the number of lines simply by providing a large number of rosette bodies.

In addition, the connector plug used in the present invention has an effect that the connection work can be completed quickly without using extra tools and without producing extra length waste.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a communication line connection structure according to an embodiment of the present invention, FIG. 2 is a sectional view of a main part of the connection structure, FIG. 3 is a side view of a rosette body used in the connection structure, and FIG. 6 to 7 are explanatory views of a conventional rosette. 2 ... Modular plug, 4 ... Connector plug, 5 ... Rosette body, 5a ... Modular insertion port, 5b ... Connector insertion port, 6 ... Contact piece.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor, Tsuneharu Kimeda, 2356 Take, 1-chome, Yokosuka, Kanagawa Nippon Telegraph and Telephone Corporation, Communication Research Laboratory (56) Reference JP-A-53-124796 (JP, A) Actual Kai 60-147091 (JP, U)

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. A rosette body having a modular insertion opening on the front surface for receiving the distal end of the modular plug and another connector insertion opening on the rear surface for receiving the plug portion of a connector plug for connecting a cable, and a modular plug at the time of insertion of the modular plug. The modular side end extended into the modular insertion port corresponding to the modular plug so that it can be elastically pressed against the contactor at the tip corner portion of the modular plug, and the state in which it is extended in the length direction of the connector insertion port. At the connector side end introduced into the connector insertion port, a plurality of "U" -shaped contact pieces having an intermediate part fixed to the rosette body, and at the connector side ends of these contact pieces, respectively. A plug base that incorporates a plurality of contact terminals that can contact and a plug cover that can be fitted and fixed to the plug base while covering the exposed surface of the plug base. And a connector plug having a connector, wherein each of the connection terminals has a coating of a cable core projecting on the exposed surface of the plug base and exposed on a corresponding surface of the plug cover when the plug cover is pressed against the plug base. A rosette with a two-pronged inner end with an inner blade that can be torn and contact the core wire.