JPH088523Y2 - Branch connector for data transmission medium - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a branch connector of a data transmission medium, more specifically, as a transmission medium for transmitting data, a shielded twisted pair wire (hereinafter referred to as "pair cable"). ) Branch connector.

[Background of the Invention] This type of paired cable is composed of two pairs of core wires which are structurally and electrically symmetrical.

Conventionally, there is no dedicated connector for branching the twisted pair of shields, and at least three branching connectors are used to separately connect the core wire and the shield wire. Branching the pair cable in this manner has many disadvantages such as an increase in the size of the entire connector at the connection portion, an increase in the number of parts at the connection portion, and a complicated connection work.

[Object of the Invention] In consideration of many problems that have been desired to be solved in these conventional techniques, the present invention has a simple structure, can be miniaturized, and is a data transmission medium that can be easily connected. In particular, it is to provide a branch connector for shielded twisted pair.

[Outline of the Invention] In order to achieve the following objects, the outline of the invention is disclosed as follows.

A pin contact for removing a desired length of the protective coating and press-contacting the exposed portion of the core wire at a desired portion of a shielded twisted wire consisting of a pair of core wires, a shield surrounding the core wire, and a protective coating. And a wire connection body made of an insulator having a shield mounting portion for mounting the exposed shield part, and fixing the protective coatings on both ends of the exposed part of the shield pair twisted wire in cooperation with the wire connection body. And a lower part extending portion is integrally formed on the wire connection body, and a cavity having an opening at a lower end is provided in the lower extending portion, and a leg portion of the pin contact is provided in the cavity. And a protrusion for engagement that projects the shield mounting portion into the void along an outer wall of the wire body and the lower extension portion at an opening at a lower end of the lower extension portion. And a socket contact for crimping a branching core wire having a shield wire to the branching body, the branching body being made of an insulator for inserting the branching socket housing into the space of the lower extension. A branch of the data transmission medium, which is formed by surrounding the outer peripheral wall of the branch main body with a shield wire connecting shell and extending one end of the shell into the branch main body to serve as a crimping portion of the branch shield wire. connector.

DESCRIPTION OF PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described with reference to the drawings. First, the present invention relates to a connector 10 for branching a data transmission medium, in particular, a shield twisted pair C from a desired portion. The shielded twisted pair, that is, the paired cable C,
As shown in FIG. 1, a pair of insulation-coated cores W1 and W2,
It is a well-known cable which comprises a shield S surrounding these core wires and a protective coating P surrounding the core wires W1, W2 and the shield S.

According to this invention, a part of the protective coating P of the cable C is removed to expose the shield S and the core wires 1 and W2 at a desired portion of the paired cable C to be branched, and the branch of this invention is branched. The connector 10 is connected to various components described later.

As shown in the drawings, the branch connector 10 includes a pin contact housing 12 for connecting to the cable C and a branch socket contact housing 14.

The pin contact housing 12 is composed of a wiring body 16 and a cover 18 made of an insulator. As shown in FIGS. 1 and 3, the connection body 16 is made of an insulating upper box 20 and a lower extension portion 22 having a space 23 into which the branch socket contact housing 14 is fitted. It is integrally formed and its appearance is, for example, T-shaped. Upper box 20
Is the leading edge that projects upward from the 24 edges of the bottom of the rectangle.
26, a right edge 27, a rear edge 28, and a left edge 29. This leading edge
Cable holding bases 30 and 31 each having a semi-circular recess are provided at a predetermined distance from each other substantially in the center between the rear edge 28 and the rear edge 28. In addition, the hill portion 3 which is adjacent to the right side edge 27 and the left side edge 29 and protrudes from the bottom surface 24, and the opposing side edges have an arc shape is formed.
2, 33 are provided respectively, and the hills 32, 33 are formed with openings 36 into which bolts 34 for fixing the cover 18 can be inserted.

Bottom surface 2 between cable holders 30 and 31 that are spaced apart
A pair of pin contacts 40 are fixed through the four.
These pin contacts 40 extend upward from the bottom surface 24,
It has a notched head 38 that is electrically connected to each other by inserting the core wires W1 and W2 of the pair cable C, and penetrates the bottom surface 24 to form a void 23 in the lower extension 22 of the pin contact housing 12. Exposed and can be contacted with socket contacts as described below.

A shield connecting member made of metal so as to be attached to one side edge of the upper box 20, for example, the hill portion 33 on the side of the left side edge 29.
42 is provided.

As shown in FIG. 1, FIG. 2, and particularly FIG. 5, the metal shield connecting member 42 includes a plurality of sawtooth-shaped shield mounting portions 44 which stand upright along the arcuate side edges of the hill portion 33. Have. The shield connecting member 42 extends along the lower surface of the upper box 20 through the notch 46 formed in the left side edge 29, and further extends downward along one side wall of the lower extension portion 22 along the side wall. A rising side wall 46 is formed surrounding the remaining side wall of the lower extension part 22, and an opening 48 is formed in the bottom surface of the lower extension part 22 so as to communicate with the void 23 and to insert the branch socket contact housing 14. Further, as will be described later, an engaging projection 50 for contacting the shield connecting member of the socket housing 14 is formed inside one side edge of the opening 48.

Insulator cover 18 for pin contact housing 12
As shown in FIGS. 2 and 3, the connection body 16 is hermetically sealed and the pair cable C is fixed between the two.
The cover 18 is formed with semi-circular recesses 52, 53 facing the cable holding bases 30, 31 formed in the semi-circular recess of the connection body 16, and further has bolts 34, 35 for fixing them. It is provided with bolt holes 56 and 57 to be inserted.

The branch socket contact housing 14 is inserted into the space 23 of the lower extension portion 20 of the pin contact housing 12, and as shown in FIG.
Made of 60. The branch main body 60 has a lower extension
Insert into the empty space 23 of 22 and pin contact housing 12
There is provided an opening 62 into which the pin contact portion 40 provided in is inserted, and a socket contact 64 can be arranged inside the branch main body 60. The socket contact 64 is
The structure is exactly the same as a normal socket contact of this type, and at one end thereof is aligned with the opening 62 of the branch body 60,
A contact portion 66 for receiving the pin contact portion 40 is provided, and a branching core wire 68 is crimped to the other end. Branch cord 68
A shield wire 70 is provided around the.

On the peripheral side wall of the branch body 60 made of an insulator of the branch socket contact housing 14, a metallic shell 72 for connecting a shield wire is arranged so as to surround the shell. As shown in FIG. 4, the metal shell 72 is turned upside down from one side to elastically contact the side wall of the cavity 23 of the lower extension 22 and the lock arm 74 having the lower end as a free end. Is configured. The lock arm 74 has a branch socket contact housing 14 and a pin contact housing.
When inserted into the space 23 of the lower extension portion 22 of 12, the engaging opening 76 for receiving the engaging projection 46 at the lower end of the shield connecting member 42.
Is provided.

The other lower end of the shield wire connecting shell 72 is a branch body.
It extends inside 60 to form a crimp portion 78 of the shield wire 70 of the branching core wire 68.

[Operation of the Invention] The branch connector of the data transmission medium of the present invention has the structure as described above in detail. Regarding the work of branching the shielded twisted pair C at a predetermined position using this connector 10. explain.

First, at the position where the shielded twisted pair, that is, the position where the paired cable C is to be branched, the protective coating P having a desired length of the cable C is removed to expose the core wires W1 and W2 and the shield S.

Next, the exposed portions of the cables C are aligned with the cable holding base 30 of the upper box 20 of the connection body 16, and the exposed core wires W1 and W2 are respectively attached to the notched head 38 of the pin contact portion 40, Pressure welding using an appropriate tool.

On the other hand, the exposed portion of the shield S is hooked and fixed to the saw-toothed shield mounting portion 44.

Further, at both ends of the cable C except for the portion where the protective coating P is removed, elastic insulators 80, for example, rubber cylinders are used as cable retainers at both ends of the protective coating P of the cable C placed on the cable holder 30. In a state where the cable C is fitted and the cable C is supported together with the cable holding recess 52 of the cover 18, the cover 18 and the connection body 16 are fixed by using the bolt 34. In this case, the elastic body 80 of the cable presser attached to the portion of the protective coating P of the cable C is compressed by the cable holding bases 30 and 31 and the cable holding recesses 52 and 53 of the cover 18, and the cable C is compressed. Is fixed to the pin contact housing 12 so that it cannot move in either direction.

Therefore, the socket contact crimped to the branch core wire 68
A branch socket contact housing (14) consisting of a branch body (60) in which 64 is incorporated is inserted into the recess (23) of the lower extension portion (22) of the pin contact housing (12).

Then, as is obvious from the above, the pin contact portions 40 connected to the respective core wires W1 and W2 of the shield twisted pair C come into contact with the socket contacts 64,
Both are electrically connected. On the other hand, on the other hand, a shield connecting member 42 connected to the shield S of the twisted pair C of the shield.
However, the engaging projection 50 contacts the engaging opening 76 of the lock arm 74 of the shield wire connecting shell 72 and the like, and both are electrically connected.

As a result, the shield S connected to the shield mounting portion 44 of the pin contact housing 12 at the exposed portion of the pair cable C is branched through the shield connecting member 42, the shield wire connecting shell 72, and the shield wire crimping portion 78. line
A shield wire 70 surrounding 68 is connected, and both are electrically connected separately from the core wire.

[Effects of the Invention] As can be fully understood from the disclosure of the preferred embodiment of the present invention, the branch connector 10 of the data transmission medium of the present invention requires the shielded twisted pair C in the pin contact housing 12. It is possible to attach the core wires W1 and W2 and the shield S separately and extremely easily at the portion of.

Further, by simply fitting the branch socket contact housing 14 to which the branch core wire 68 is attached to the pin contact housing 12 to which the shield pair stranded wire C is connected,
The core wires W1 and W2 of the shielded twisted pair C as a bus bar and the shield S are electrically connected to the branching core wire 68 of the branching socket contact housing 14 and the shield wire 70 thereof independently and accurately. .

Therefore, the branch connection work of the shield pair stranded wire C can be performed very easily, and the work efficiency is higher than that of the conventional work.
Much better.

Further, the pin contact housing 12 and the branch socket contact housing 14 can be fitted by simply inserting one end of the branch socket contact housing 14 into the space 23 of the lower extension portion 22. Further, when the fitting is performed, the shield connecting member 42 is inserted into the engaging opening 76 of the elastic lock arm 74.
Due to the engagement projection 50 entering into the lock arm 74, the lock arm 74 cannot be pulled unless the lock arm 74 is pressed to release the engagement.

Further, in this invention, the number of parts of the constituent parts is small, and the entire size can be made extremely small.

[Brief description of drawings]

FIG. 1 is a perspective view showing a pin contact housing of a branch connector of a data transmission medium according to the present invention with a cover removed, FIG. 2 is a perspective view showing the inside by removing the cover, and FIG. 1 is a sectional view taken along the line III-III of FIG. 1 in the direction of the arrow, FIG. 4 is a sectional view of the branch connector housing at a position corresponding to the line III-III, and FIG. 5 is a perspective view illustrating a shield connecting member. Is. The main reference characters and numbers in the drawings are listed below. C: Shielded twisted pair wire (pair cable) P: Protective coating S: Shield W1, W2 ... Core wire 10 ... Branch connector 12 ... Pin contact housing 14 ... Branch socket contact housing 16 ... Wiring Main body 18 ...... Cover 22 ...... Lower extension 23 ...... 22 vacant space 40 ...... Pin contact 42 …… Shield connection member 44 …… Sawtooth shield mounting part 50 …… 42 engaging projection 60 …… Branch Body 64 …… Socket contact 68 …… Branching core wire 70 …… 68 shield wire 72 …… Shield wire connecting shell 74 …… Lock arm 78 …… Shield wire crimping section 80 …… Insulator cylindrical member

Claims (4)

[Scope of utility model registration request] 1. A portion of a core wire exposed by removing a desired length of the protective coating at a desired portion of a shield pair twisted wire comprising a pair of core wires, a shield surrounding the core wire, and a protective coating. And a wire connecting body made of an insulator, which includes a pin contact for press-contacting the shield and a shield connecting member for mounting an exposed shield portion, and both ends of the exposed portion of the shield pair twisted wire that are fixed to the wire connecting body and cooperate with each other. A pin contact housing comprising a cover for fixing a protective coating, and a lower extension part formed integrally with the connection body, and a cavity having an opening at a lower end is provided in the lower extension part, and the pin is provided in the cavity. Extending the leg portion of the contact, and projecting the shield connecting member into the void along the outer wall of the wire body and the lower extension portion at the opening at the lower end of the lower extension portion. A branch core made of an insulating material that inserts the branch socket housing into the space of the lower extension, and the branch core has a shield wire in the branch body. Data for forming a crimping socket contact, surrounding the outer peripheral wall of the branch main body with a shield wire connecting shell, and extending one end of the shell into the inside of the branch main body to form a crimping portion of the branch shield wire. Branch connector for transmission media. 2. The shield connecting member according to claim 1, wherein one end of the shield connecting member in the connection body is an arc-shaped edge, and a plurality of sawtooth-shaped shield mounting portions are provided upright from the arc-shaped edge. Branch connector described. 3. The main body of the branch socket contact housing when the branch body is inserted into the space of the lower extension part at the other end of the shield wire connecting shell surrounding the outer peripheral wall of the branch body. The connector according to claim 1, further comprising a lock arm for holding the connector. 4. The branch connector according to claim 1, wherein a cylindrical member made of an insulator is arranged on the shielded twisted pair wire fixed between the wire connection body and the cover.