JP2000306622A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To have a reliable wire connecting structure. SOLUTION: This connector is provided with a first cover insulator 21 and a second cover insulator 22, multiple contact grooves 26a, 26b to place stripped parts 57 of a cable 50 approximately in a U-shape on the first cover insulator 21 and the second cover insulator 22, a base insulator 10 which can mate the first cover insulator 21 and the second cover insulator 22, and a base contact 30 which is provided on the base insulator 10 and clamps the stripped parts 57 of the cable 50 when the first cover insulator 21 and the second cover insulator 22 mate each other. Support contacts 60 energizing the stripped parts 57 against contact parts 31 of the base contact 30 are held inside the contact groove 26a, 26b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector for electrically connecting cables arranged at a narrow pitch.

[0002]

2. Description of the Related Art Conventionally, as a method of connecting cables arranged at a narrow pitch, there is a method of crimping or soldering a cable to a contact.

[0003] However, this method has a problem that the occupied area of the crimping portion and the soldering portion is large and it is impossible to respond to the narrow pitch of the contacts.

As a connector for solving this problem, there is a connector disclosed in Japanese Patent Application Laid-Open No. 10-255921.

[0005] This connector comprises a cable row arrangement member, a cable holder, a holder cover, a socket,
Consists of contacts.

The cable row arrangement member arranges a plurality of cables in a row at a predetermined pitch.

[0007] The cable holder has a concave portion for accommodating the cable row arrangement member and a cable guide groove for guiding the cable conductor of the cable, and is mounted on the holder cover.

[0008] The socket has a box shape, and a plurality of contacts corresponding to the cable are arranged inside the socket.

In order to use this connector, first, a plurality of cables are mounted on a cable row arrangement member. Next, the cable row-shaped arrangement member is accommodated in the concave portion of the cable holder.
Then, the cable conductor of the cable is bent substantially in a U-shape and crawls in the cable guide groove of the cable holder. Thereafter, the holder cover is attached to the cable holder. Finally, the cable holder is fitted into the socket. At this time,
The cable conductor of the cable is sandwiched between the forked contact portions of the contacts, and both are electrically connected.

[0010] As described above, since the cable is not crimped or soldered to the contact, the pitch of the contact can be reduced.

[0011]

However, since each component such as a cable holder is molded with a resin, warping or twisting occurs due to a difference in shrinkage of the resin during molding, or sink (dents appearing on the surface) occurs on the surface. Or a dimensional error occurs.

Since the displacement of the socket contact when the cable holder is fitted into the socket changes due to the dimensional error, the contact force of the socket contact with the cable conductor of the cable varies, and the reliability of the connection structure is low.

When the displacement of the socket contact decreases, the contact force decreases in proportion to the displacement. On the other hand, when the amount of displacement is large, the contact force is lost beyond the elastic range of the socket contact.

The present invention has been made in view of such circumstances, and an object thereof is to provide a connector having a highly reliable connection structure.

[0015]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a cover insulator and a plurality of contacts provided on the cover insulator, wherein a strip portion of a cable is disposed substantially in a U-shape. Grooves and
A connector comprising: a base insulator capable of being fitted to the cover insulator; and a base contact provided on the base insulator and sandwiching a strip portion of the cable when fitted with the cover insulator. Held in
A biasing member for biasing the strip portion toward the contact portion of the base contact is provided.

Since the strip portion is urged by the urging member in the contact groove toward the contact portion of the base contact,
It is possible to absorb errors due to components alone, errors when components are combined, and the effects of warpage and sinkage, and to ensure insulation between strip portions.

A connector according to a second aspect of the present invention is the connector according to the first aspect, wherein the urging member is formed of a metal material.

The biasing member can be formed from a metal plate by pressing or the like.

According to a third aspect of the present invention, in the connector according to the first or second aspect, the urging member and the strip portion have a thickness of the cover insulator larger than an interval between contact portions of the base contact. The biasing member has a generally U-shaped spring portion.

The contact of the base contact is urged in the thickness direction of the cover insulator by a substantially U-shaped spring portion.

According to a fourth aspect of the present invention, in the connector according to any one of the first to third aspects, the cover insulator includes a pair of insulators, is formed on each insulator, and accommodates the cable. A possible clamp groove and a clamp member disposed between the insulators and biasing a part of the cable to the clamp groove are provided.

A part of the cable housed in the clamp groove formed in the cover insulator is pushed into the clamp groove by the clamp member and clamped.

[0023]

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

FIG. 1 is a perspective view of a connector according to an embodiment of the present invention, FIG. 2A is a front view of the connector, and FIG.
2B is a plan view thereof, and FIG. 2C is a side view thereof.

The connector includes a base insulator 10 and a cover insulator 20.

A base contact 30 is fixed to the base insulator 10, and the base insulator 10 is fitted with the cover insulator 20.

The cover insulator 20 includes a first cover insulator 21 and a second cover insulator 2.
And 2. First cover insulator 2
The first and second cover insulators 22 are fixed by four flathead screws 23 while holding the ends of the two flat cables F.

FIG. 3 is a sectional view taken along the line III-III in FIG. 2 (b).

The flat cable F includes a plurality of cables 50.
Are arranged integrally at a constant pitch. A strip portion 57 (a signal line 51 and a drain line 52 to be described later) of each cable 50 is sandwiched by the bifurcated elastic pieces (contact portions) 31 of the base contact 30 in the contact grooves 26a and 26b (see FIG. 7). .

At this time, the elastic piece 31 of the base contact 30 is attached to the spring 6 of the support contact (biasing member) 60.
3 presses against the inner wall 32 of the base insulator 10. On the other hand, the spring portion 63 is elastically deformed by being pushed by the elastic piece 31.

Therefore, the strip portion 5 of the cable 50
The base contact 3 is formed by the elastic force of the spring portion 63.
0 of the base piece 30
It is conducting.

FIG. 4 is a sectional view showing a state before the cable connection.

FIG. 4 shows the elastic piece 31 of the base contact 30.
5 shows a state where the spring portion 63 of the support contact 60 is not displaced.

The two flat cables F are connected to a first cover insulator 21 and a second cover insulator 22.
Is sandwiched between.

The first cover insulator 21 and the second cover insulator 22 each have a clamp groove 41 capable of accommodating the cable 50 extending in a width direction (a direction parallel to the arrangement direction of the contact grooves).

A part of the cable 50 is urged to the clamp groove 41 by the clamp member 42 arranged between the two flat cables F. The clamp member 42 is formed of an elastic material such as rubber so as not to damage the cable 50.

The first cover insulator 21 and the second cover insulator 21
Contact grooves 26a, 2 of cover insulator 22
A support contact 60 is provided at 6b.

The support contact 60 includes a base 61,
It is composed of a press-fit portion 62 and a spring portion 63.

The press-fit portion 62 is provided at one end of the base 61,
The press-fit portion 62 is formed with a press-fit protrusion 62a.

Press-fit portion 6 of one support contact 60
2 is press-fitted into a hole 21a of the first cover insulator 21.

The press-fit portion 6 of the other support contact 60
2 is press-fitted into a hole 22a of the second cover insulator 22.

The spring portion 63 is provided at the other end of the base 61,
It is almost U-shaped. The dimension of the spring portion 63 in the thickness direction of the cover insulator 20 is larger than the interval between the contacts 31 a of the base contact 30. In this spring part 63,
The strip portion 57 of the cable 50 is substantially U-shaped.

At one end of the base contact 30, a contact portion 33 capable of contacting a contact of a mating connector is provided, and at the other end, an elastic piece 3 which contacts the strip portion 57 of the cable 50.
1 is formed.

FIG. 5 is a plan view showing a strip portion of the cable, and FIG. 6 is a sectional view taken along the line VI-VI of FIG.

The cable 50 has a rectangular section, and the signal line 5
1, a drain line 52, a dielectric 53, and a shield 54.
And a coating 55.

The signal line 51 and the dielectric 53 have the same center.

The signal line 51 and the drain line 52 are arranged substantially in parallel at a predetermined interval, and
4 surrounded. The shield 54 is surrounded by a coating molded from a UV curable resin or film.

The end of the cable 50 has a head portion 56 having a coating 55 and a strip portion 57 from which the signal line 51 and the drain line 52 are exposed.

FIG. 7 is an exploded perspective view of the connector.

On one long side of the first cover insulator 21, partition walls 25a are formed at a predetermined pitch.

On one long side of the second cover insulator 22, partition walls 25b are formed at a predetermined pitch.

When the first cover insulator 21 and the second cover insulator 22 are combined, guide portions 27 for guiding the protrusions 11 of the base insulator 10 are formed at both ends in the arrangement direction of the contact grooves 26a and 26b. You.

The first cover insulator 21 is formed with a hole 23a for inserting a flathead screw 23, and the second cover insulator 22 is formed with a hole 23b for inserting the flathead screw 23.

The base insulator 10 has a flat head screw 23
Are formed respectively.

Next, a method of assembling the connector will be described.

First, the base contact 30 is fixed to the base insulator 10, and the support contact 60 is fixed to the cover insulators 21 and 22, respectively.

Next, the two cables 50 on which the strip portions 57 are formed are overlapped, and both cables 50 are formed.
The clamp member 42 is sandwiched between the portions (the portion other than the head portion 56).

Then, these cables 50 are set on the second cover insulator 22. At this time, the clamp member 42 and the clamp groove 41 face each other in the cable overlapping direction.

Thereafter, the first cover insulator 21
Is put on the second cover insulator 22.

Next, the strip portion 57 is connected to the contact groove 2.
Wrap around the support contact 60 in 6a, 26b and then cut off the head 46.

After that, the projection 11 is moved along the guide 27 as shown by the arrow a, and the base insulator 1 is moved.
0 is fitted to the cover insulator 20 and the cable 5
The zero strip portion 57 is held between the base contacts 30.

Finally, the first cover insulator 21 and the second cover insulator 22 are fixed by flathead screws 23 (see FIG. 1).

FIG. 8 is a cross-sectional view showing a fitting state with a mating socket connector.

The socket connector 80 includes a housing 81
And a bellows-shaped socket contact 82 fixed to the housing 81.

When the socket connector 80 is fitted to the base insulator 10, the contact portion 82b is pressed against the contact portion 33 of the base contact 30 by the elastic force of the spring portion 82a of the socket contact 82, and the socket contact 82 and the base contact 30 is conducted.

According to this embodiment, the elasticity of the spring portion 63 can absorb the tolerance of the components alone, the tolerance when the components are combined, and the influence of warpage or sinkage, and the partition wall for forming the contact groove 26a. 25
The insulation between the strip portions 57 is ensured by the partition wall 25b forming the contact groove 26a and the contact groove 26b, so that a highly reliable connection structure can be obtained.

Since the support contact 60 is formed of a metal material, the processing accuracy of the support contact 60 can be improved.

Further, even when an external force is applied to the cable 50, the external force does not directly act on the connection portion by the clamp member 42, so that the connector is prevented from being damaged.

FIGS. 9 and 10 are cross-sectional views of a connector according to a modification of the above-described embodiment. FIG.
0 is a diagram showing a state before connection. The same parts as those in the above embodiment are denoted by the same reference numerals, and the description thereof is omitted.

The shape of the spring portion 163 of the support contact 160 of this modified example is different from the shape of the spring portion 63 of the support contact 60 of the above embodiment.

The support contact 160 includes a base 161.
, A press-fit portion 162, and a spring portion 163.

The press-fitting portion 162 is provided at one end of the base 161. The press-fitting portion 162 has a press-fitting convex portion 162 a orthogonal to the base 161. The press-fit portion 162 is press-fitted into the holes 21 a and 22 a of the first cover insulator 21 and the second cover insulator 22.

The spring portion 163 is provided at the other end of the base 161 and is folded from the other end toward the press-fit portion 162.
The spring portion 163 includes the strip portion 5 of the cable 50.
7 are substantially U-shaped.

The strip portion 57 of the cable 50 is pressed against the elastic piece 31 of the base contact 30 by the elastic force of the spring portion 163, and the strip portion 57 and the base contact 30 are conducted.

According to this modification, the same effect as in the above embodiment can be obtained.

In the above embodiment, a coaxial cable with a drain line is used as the cable 50 for high-speed transmission, but the scope of the present invention is not limited to a coaxial cable with a drain line.

The cutting of the head portion 56 of the cable 50 may be performed after the connection, not before the connection.

Further, instead of changing the structure of the spring portions 63 and 163 of the support contacts 60 and 160, the structure of the elastic piece 31 of the base contact 30 may be changed.

[0079]

As described above, according to the connector of the first aspect, the base contact can clamp the strip portion of the cable with an appropriate contact force.
A highly reliable connection structure can be obtained.

According to the connector of the second aspect, the processing accuracy of the urging member can be improved.

According to the connector of the present invention, the strip portion of the cable is pressed against the contact portion of the base contact with a force corresponding to the elastic force of the spring portion.

According to the connector of the fourth aspect of the present invention, even when an external force is applied to the cable, the external force is absorbed by the clamp member, and damage to the connector is prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view of a connector according to an embodiment of the present invention.

2 (a) is a front view of the connector, FIG. 2 (b) is a plan view thereof, and FIG. 2 (c) is a side view thereof.

FIG. 3 is a sectional view taken along the line III-III in FIG. 2 (b).

FIG. 4 is a sectional view showing a state before cable connection.

FIG. 5 is a plan view showing a strip portion of the cable.

FIG. 6 is a sectional view taken along the line VI-VI in FIG. 5;

FIG. 7 is an exploded perspective view of the connector.

FIG. 8 is a sectional view showing a fitted state with a mating socket connector.

FIG. 9 is a cross-sectional view of a connector according to a modification of the embodiment, and is a diagram showing a connection state.

FIG. 10 is a cross-sectional view of a connector according to a modification of the above embodiment, showing a state before connection.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Base insulator 20 Cover insulator 26a, 26b Contact groove 30 Base contact 31 Contact part 41 Clamp groove 42 Clamp member 50 Cable 57 Strip part 60 Support holder (biasing member)

Claims (4)

[Claims] 1. A cover insulator, a plurality of contact grooves provided in the cover insulator, wherein a strip portion of a cable is disposed in a substantially U-shape, a base insulator engageable with the cover insulator, and the base insulator And a base contact for holding the strip portion of the cable when fitted with the cover insulator. The connector is held in the contact groove, and the strip portion is connected to the contact portion of the base contact. A connector comprising a biasing member for biasing. 2. The connector according to claim 1, wherein said urging member is formed of a metal material. 3. The biasing member and the strip portion have a thickness dimension of the cover insulator that is larger than a distance between contact portions of the base contact, and the biasing member has a substantially U-shaped spring portion. The connector according to claim 1, wherein the connector is provided. 4. The cover insulator includes a pair of insulators, is formed on each insulator,
4. A clamp groove capable of accommodating the cable, and a clamp member disposed between the insulators and biasing a part of the cable to the clamp groove. Or the connector according to item 1.