JPH11265746A - Connector for coaxial flat ribbon cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely insulate between a signal contact and a ground contact by improving connecting work performance. SOLUTION: In this connector, a signal wire 51 bent in a crank shape is held by a first groove part 33 of a cover insulator 30, a straight bare drain wire 52 cut to a length shorter than the signal wire 51 is held by a second groove part 34 of the cover insulator 30 and the cover insulator 30 is engaged with a base insulator 10. The signal wire 51 is brought into pressure contact with a pressure contact terminal of a signal contact 17 to be positioned, and the bare drain wire 52 is brought into pressure contact with a pressure contact 28 of a ground contact 27 to be positioned.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a coaxial flat ribbon cable connector.

[0002]

2. Description of the Related Art A conventional coaxial flat ribbon cable connector includes a contact portion capable of holding a pin of a mating connector, a plurality of signal contacts connected to a signal line of the flat ribbon cable, and a drain line of the flat ribbon cable. And a plurality of ground contacts connected to the ground contact.

[0003] Each coaxial line constituting the coaxial flat ribbon cable has a center conductor surrounded by a dielectric (insulator), a drain line is provided along the outer periphery thereof, and a shield (copper foil,
(Alpet, etc.), and further covered with a sheath.

FIG. 16 is a cross-sectional view for explaining a state in which a coaxial flat ribbon cable is attached to a conventional coaxial flat ribbon cable connector.

The pressure contact terminal 11 of the signal contact 117
8 and the press contact terminal 128 of the ground contact 127
The signal lines 151 (coaxial flat ribbon cable 150) are arranged at predetermined intervals in the length direction.

The pressure contact terminal 11 of the signal contact 117
8 and the press contact terminal 128 of the ground contact 127 are each inclined at a predetermined angle with respect to the coaxial flat ribbon cable 150.

The signal line 151 and the drain line 152 are positioned by the press contact terminal 118 of the signal contact 117 and the press contact terminal 128 of the ground contact 127, respectively, and extend straight toward the contact portion 160, respectively.

FIG. 17 is a sectional view for explaining a state in which a coaxial flat ribbon cable is attached to another conventional coaxial flat ribbon cable connector.

The pressure contact terminal 21 of the signal contact 217
8 and the press contact terminals 228 of the ground contacts 227 are alternately arranged on one virtual straight line orthogonal to the coaxial flat ribbon cable 250.

The pressure contact terminal 21 of the signal contact 217
8 and the press contact terminal 228 of the ground contact 227 are inclined at a predetermined angle with respect to the coaxial flat ribbon cable 250.

The signal line 251 and the drain line 252 are positioned by the press contact terminal 218 of the signal contact 217 and the press contact terminal 228 of the ground contact 227, respectively, and extend straight toward the contact portion 260, respectively.

[0012]

The coaxial flat ribbon cable connectors 150 and 250 having the above-described structure have the following problems.

When the outer coatings (sheath and shield) of the cables 150 and 250 are removed by a predetermined length and an attempt is made to connect the exposed drain wires 152 and 252 (bare drain wires), the bare drain wires 152 and 252 come close to each other. Terminals 128, 228 of the signal contacts 127, 227
, And the bare drain lines 152 and 252 and the signal contacts 127 and 227 may be short-circuited.

To solve this problem, the contacts 117, 12
It can be dealt with by covering a portion that may come into contact with 7, 217, 227 with tape, mold-in, or the like. However, in this method, workability is poor, and misalignment is likely to occur.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and a problem thereof is to provide a connector for a coaxial flat ribbon cable which is excellent in connection workability and can reliably insulate between a signal contact and a ground contact. It is to provide.

[0016]

According to a first aspect of the present invention, there is provided a coaxial flat ribbon cable having a plurality of bare drain lines and signal lines exposed by removing an outer coating of an end portion of the coaxial flat ribbon cable. In a connector for a coaxial flat ribbon cable, wherein the signal lines are alternately arranged in the width direction of the cable, the signal line is pressed against a pressure contact terminal of a signal contact, and the bare drain line is pressed against the pressure contact terminal of a ground contact, the base insulator and the base A cover insulator fitted to the insulator; the base insulator having the signal contact and the ground contact extending in the length direction of the cable, respectively; a press contact terminal of the signal contact and a press contact terminal of the ground contact; Predetermined along the length of the cable Isolation and arranged, inclined at a predetermined angle to the press-connecting terminal of the ground contact to the cable, the signal line provided with a first groove for holding cranked to the cover insulator,
A second groove portion for holding the bare drain line straightened by a predetermined length shorter than the signal line is provided.

A signal contact and a ground contact are respectively provided on the base insulator so as to extend in the length direction of the cable, and a press contact terminal of the signal contact and a press contact terminal of the ground contact are arranged at predetermined intervals in the length direction of the cable. As a result, a predetermined interval can be secured between the contacts, the press contact terminal of the ground contact is inclined at a predetermined angle with respect to the cable, and the cover insulator is provided with a first groove for bending and holding the signal line in a crank shape. Since the second groove portion for holding the bare drain line shorter than the signal line by a predetermined length straight is provided, the leading end of the bare drain line recedes from the leading end of the signal line,
It is possible to prevent the bare drain line from contacting the pressure contact terminal of the signal contact. In addition, the connection can be performed simply by laying the signal line and the bare drain line on the cover insulator without specially processing the cable, and the connection workability is improved.

According to a second aspect of the present invention, in the connector for a coaxial flat ribbon cable according to the first aspect, when the cover insulator is fitted to the base insulator, the signal line is connected to a press contact terminal of the signal contact. It is characterized by being positioned crossing.

When the cover insulator is fitted to the base insulator, the signal line is positioned so as to intersect with the pressure contact terminal of the signal contact. Therefore, when the cover insulator is fitted to the base insulator, the signal line is misaligned. Does not occur.

[0020]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a cross-sectional view showing a connected state of a coaxial flat ribbon cable connector according to an embodiment of the present invention, FIG. 2 is a view taken along the line II-II of FIG. 1, and FIG. 3 is a cross-section of a base insulator. FIG. 4 is a view taken along the line IV-IV in FIG.
FIG. 6 is a plan view of the coaxial flat ribbon cable connector in a connected state, FIG. 6 is a view taken in the direction of arrow A in FIG. 5, and FIG.
It is an arrow view.

The coaxial flat ribbon cable connector includes a base insulator 10 and a cover insulator 30.

The base insulator 10 has a first contact 11 and a second contact 21. Two sets of the first contact 11 and the second contact 21 are provided in the thickness direction of the base insulator 10 (the vertical direction in FIG. 1).

The first contact 11 is a contact portion 12 that can contact another coaxial flat ribbon cable (not shown).
a, a press-fit portion 14 inserted into a storage hole 13 arranged in a grid pattern, and a signal contact extending substantially straight from the press-fit portion 14 along the length direction of the coaxial flat ribbon cable 50. 17 are provided.

The pressure contact terminal 1 to which the signal wire 51 of the coaxial flat ribbon cable 50 is connected to the tip of the signal contact 17 by pressure contact (contact by applying pressure).
8 is formed parallel to the coaxial flat ribbon cable 50. A groove 18a for pressing the signal line 51 is formed in the press contact terminal 18.

The second contact 21 includes a contact portion 22 having a contact portion 22a capable of contacting another coaxial flat ribbon cable, a press-fit portion 24 inserted into the housing hole 13, and a coaxial flat ribbon cable from the press-fit portion 24. And a ground contact 27 extending substantially straight along the length of the signal contact 50 and longer than the signal contact 11.

The contact portion 12 and the contact portion 22 form a socket contact.

The ground contacts 27 and the signal contacts 17 are alternately arranged in the width direction of the coaxial flat ribbon cable 50, and an intermediate portion of the ground contact 27 and the signal contacts 17 are parallel to each other (see FIG. 4).

At the tip of the ground contact 27, a press contact terminal 28 to which the drain wire 52 of the coaxial flat ribbon cable 50 is connected by press contact is formed.

The press contact terminal 28 is formed with a groove 28a for press contact with the bare drain line 52.
The pressure contact terminal 28 is inclined at a predetermined angle with respect to the length direction of the coaxial flat ribbon cable 50 so that the a is located on the same line along the coaxial flat ribbon cable 50.

The cover insulator 30 is fitted to the base insulator 10. A coaxial flat ribbon cable 50 is laid (set) on the cover insulator 30.

The cover insulator 30 has a first recess 31 for accommodating the press contact terminal 18 of the first contact 11.
And a second recess 32 for accommodating the press contact terminal 28 of the second contact 21.

The cover insulator 30 has a first groove 33 for holding the signal line 51 in a crank shape.
And the second groove 3 for holding the bare drain line 52 straight.
4 are formed.

The signal line 51 extends straight in the socket contact direction beyond the second concave portion 32 and is bent in a crank shape at the first concave portion 31.

The tip of the bare drain line 52 is the first recess 3
It is located between the first and second concave portions 32.

Therefore, when the cover insulator 30 is fitted to the base insulator 10, the signal line 51
Are positioned crossing the pressure contact terminal 18 of the signal contact 17, and the bare drain line 52 is
7 and is positioned so as to intersect with the press contact terminal 28.

When the cover insulator 30 is fitted to the base insulator 10, the signal line 51 comes into contact with the press contact terminal 28. Since the portion of the signal line 51 contacting the press contact terminal 28 is made of a dielectric material, There is no risk that the center conductor of the wire 51 and the press contact terminal 28 will short-circuit.

FIGS. 8 to 14 are views showing the process of connecting the coaxial flat ribbon cable connector.

The outer coating (sheath and shield) of the coaxial flat ribbon cable 50 is removed, and the drain wire 52 is exposed (see FIG. 8).

The tip of the drain wire 52 is connected to the first recess 31.
The drain line 52 is cut by a predetermined length from the signal line 51 so as to be located between the second and the second concave portions 32 (see FIG. 9).

The signal line 51 is bent into a crank shape (FIG. 10).
reference).

The cover insulator 30 (see FIG. 11)
The signal line 51 is laid in the first groove 33, and the drain line 52 is laid in the second groove 34 (see FIG. 12).

The cover insulator 30 (see FIG. 12) is pressed at a predetermined pressure so that the signal line 51 intersects with the press contact terminal 18 of the signal contact 17 and the drain line 52 intersects with the press contact terminal 28 of the ground contact 27. Push it into the base insulator 10 (see FIG. 13).

The cover insulator 30 in which the coaxial flat ribbon cable 50 is laid is the base insulator 1
When fitted to 0, the signal line 51 and the drain line 52 are pressed against the press contact terminals 18 and 28 and positioned respectively (see FIG. 14).

According to this embodiment, the following effects can be obtained.

The groove 28a of the press contact terminal 28 and the bare drain wire 5
Since the two grooves 18a are arranged on the same line along the length direction of the coaxial flat ribbon cable 50, high density can be realized.

When the cover insulator 30 is fitted to the base insulator 10, the tip of the bare drain wire 52 is positioned between the first recess 31 and the second recess 32, so that the bare drain wire 52 is pressed against the bare drain wire 52. A sufficient distance from the terminal 18 can be secured, and a short circuit between the bare drain line 52 and the signal contact 17 can be prevented.

In performing the connection work, it is only necessary to remove the sheath and the shield of the coaxial flat ribbon cable 50, and there is no need to perform operations such as tape application and mold-in, so that the connection work is simplified and the cost of the product is reduced. Can be achieved.

Since the signal line 51 is pressed against the pressure contact terminal 18 in a state of crossing the pressure contact terminal 18 at a predetermined angle,
No displacement occurs.

FIG. 15 is a sectional view showing a modified example of the coaxial flat ribbon cable connector according to one embodiment of the present invention, and the same parts as those in the above embodiment are denoted by the same reference numerals.

In this modification, the storage holes 13 into which the press-fitting portions 14 are inserted are arranged in a staggered arrangement (not shown), and the shape of a portion P from the middle portion of the contact to the press-fitting portion 14 is simplified.

According to this modification, in addition to the effects of the above-described embodiment, the shape of the portion P is simplified, so that an effect of facilitating manufacture can be obtained.

[0053]

As described above, according to the first aspect of the present invention, it is possible to secure a predetermined interval between the contacts and to make the bare drain line shorter than the signal line. The contact of the contact with the press contact terminal can be avoided. In addition, since the connection can be performed without special processing on the cable, the connection workability is improved.

According to the second aspect of the present invention, the coaxial flat ribbon cable can be reliably held without any displacement or the like.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a coaxial flat ribbon cable connector according to an embodiment of the present invention at the time of connection.

FIG. 2 is a view taken in the direction of arrows II-II in FIG.

FIG. 3 is a cross-sectional view of a base insulator.

FIG. 4 is a view taken in the direction of arrows IV-IV in FIG. 3;

FIG. 5 is a plan view of the coaxial flat ribbon cable connector in a connected state.

6 is a view as viewed in the direction of the arrow A in FIG. 5;

FIG. 7 is a view on arrow B in FIG. 5;

FIG. 8 is a view showing a connecting step of the coaxial flat ribbon cable connector and showing a state in which a drain wire is exposed.

FIG. 9 is a view showing a connection step of the coaxial flat ribbon cable connector and showing a state in which the drain wire is cut by a predetermined length.

FIG. 10 is a view showing a connecting step of the coaxial flat ribbon cable connector and showing a state in which the signal line is bent into a crank shape.

FIG. 11 is a plan view of a cover insulator in which a signal line and a drain line are laid out, showing a connecting step of a connector for a coaxial flat ribbon cable.

FIG. 12 is a diagram showing a connecting step of the coaxial flat ribbon cable connector, showing a state in which a signal wire and a drain wire are laid on the cover insulator.

FIG. 13 is a plan view of a base insulator fitted to a cover insulator, showing a connection step of the coaxial flat ribbon cable connector.

FIG. 14 is a plan view of the base insulator when a cover insulator is fitted thereto, showing a connecting step of the coaxial flat ribbon cable connector.

FIG. 15 is a sectional view showing a modification of the coaxial flat ribbon cable connector according to one embodiment of the present invention.

FIG. 16 is a cross-sectional view for explaining a state in which a coaxial flat ribbon cable is attached to a conventional coaxial flat ribbon cable connector.

FIG. 17 is a sectional view for explaining a state in which a coaxial flat ribbon cable is attached to another conventional coaxial flat ribbon cable connector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Base insulator 17 Signal contact 18, 28 Pressure contact terminal 27 Ground contact 30 Cover insulator 33 1st groove 34 2nd groove 50 Coaxial flat ribbon cable

Claims (2)

[Claims] 1. A plurality of bare drain wires and signal wires, which are exposed by removing the outer coating of an end portion of a coaxial flat ribbon cable, are alternately arranged in the width direction of the cable, and the signal wires are pressed against signal contacts. A coaxial flat ribbon cable connector which is pressed against a terminal and the bare drain wire is pressed against the ground contact pressing terminal, comprising: a base insulator; and a cover insulator fitted to the base insulator. A signal contact and the ground contact are respectively provided extending in a length direction of the cable; a press contact terminal of the signal contact and a press contact terminal of the ground contact are arranged at predetermined intervals in the length direction of the cable; The crimp terminal of the contact The cover insulator is provided with a first groove portion which is bent at a predetermined angle with respect to the cable, and the cover insulator is bent into a crank shape to hold the signal line, and the bare drain line shorter than the signal line by a predetermined length is held straight. A coaxial flat ribbon cable connector, wherein a second groove portion is provided. 2. The coaxial flat ribbon according to claim 1, wherein when the cover insulator is fitted to the base insulator, the signal line is positioned so as to intersect with the press contact terminal of the signal contact. Connector for cable.