JP2987676B2 - Connector connection structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector connection structure, and more particularly to a connection structure between a connector and a coaxial line in a line using a high-speed digital signal. Here, in the present invention, the connection portion refers to a connection portion of the line and the connector by pressure welding, crimping, soldering, or the like.

[0002]

2. Description of the Related Art As an example of a conventional structure of a connection portion between a connector and a coaxial line as described above, a pressure welding structure of a fine coaxial FRC 15 by a fine coaxial FRC connector is shown in FIGS.
1 is shown. In this example, the fine coaxial FRC 15 includes a coaxial signal line 16 and a fine ground line 17. The fine-wire coaxial FRC connector includes a signal contact 12 having a signal wire pressure contact portion 12a, an insulator press-fit portion 12b, and a pin header contact portion 12c, and a ground contact having a ground wire pressure contact portion 13a, an insulator press-fit portion 13b, and a pin header contact portion 13c. 13, a base insulator 19 for holding the signal contact 12 and the ground contact 13,
And a cover insulator 14 for pressing the signal line 16 and the ground line 17 of the fine coaxial FRC 15 against the corresponding contacts.

[0003] In the above-described connector for fine-wire coaxial FRC, when the fine-wire coaxial FRC 15 is connected, for example, the following procedure is adopted. First, the signal line 16 and the ground line 17 separated from the fine-wire coaxial FRC 15 are positioned on the signal line pressure contact portion 12a and the ground line pressure contact portion 13a which are pressure contact portions of the corresponding contacts. Then, as shown in FIG.
2a and the ground wire pressure contact portion 13a are pressed into pressure contact with each other. After the pressure contact, as shown in FIG. 11, the cover insulator 14 is attached and the pressure contact state is maintained. FIG.
1 is a signal contact 12 and a ground contact 1
3 shows an example in which the thin wire coaxial FRC 15 is connected to the pin header 10 through the thin wire coaxial FRC connector by connecting the pin 3 to the pin header 10 on the board.

[0004]

However, in the case of the above-mentioned structure, it is necessary to push the signal line and the ground line into the corresponding contact press contact portions from both sides thereof by press contact jigs as described above. Gaps for the jig must be provided on both sides of each press-contact part. For this reason, the distance between the signal line pressure contact portion and the ground line pressure contact portion is widened.

[0005] However, in the case of the connection structure in which the distance between the signal side and the ground side is widened as described above, the characteristic impedance of the connection portion greatly changes. And, while the characteristic impedance of a general coaxial line, for example, a coaxial FRC, is 50Ω or 75Ω, if the characteristic impedance of the connection part largely changes as described above, the impedance between the connection part and the coaxial line is changed. Of the high-speed digital signal due to the mismatching. Then, there is a problem that this becomes an adverse effect when a faster high-speed signal is passed.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned conventional disadvantages, improve impedance matching, and prevent high-speed digital signal reflection and disturbance due to impedance mismatch between a line and a connector. It is to provide a connection structure.

[0007]

According to the present invention SUMMARY OF], a plurality of signaling <br/> null contacts are respectively connected to the signal line of the plurality of signal line, a ground line of said plurality of signal lines
A structure of a connection portion of a connector including a plurality of ground contacts respectively connected, wherein the connector,
Has a recess for accommodating the wire connection part, the high-dielectric in the recess so as to cover the connection portion is filled, a plurality of connections with the signal contact and the ground contact
Parts are arranged adjacent at a distance from each other, wherein each wire
Is connection portion structure of a connector characterized obtain that the wall portion of the low dielectric constant between the parts is provided.

Further, according to the present invention, there is provided a connection portion structure of a connector, wherein the high dielectric substance is made of a powder, granule or block having a high dielectric constant.

[0009]

By interposing a high dielectric material at the connection between the connector and the signal line, the impedance at the connection can be reduced or corrected. As a result, even when the characteristic impedance of the connection portion is large as described above, the impedance matching between the connection portion and the signal line can be improved, and therefore, the connector corresponding to high-speed transmission (high-speed digital signal with a sharp rise) can be provided. Can be obtained.

[0010]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a fine coaxial FRC according to an embodiment of the present invention.
FIG. 3 is a diagram showing a connection structure using a connector for use in the present invention. This micro coaxial FRC connector is configured by combining a synthetic resin base insulator 1 and a synthetic resin cover insulator 5. The fine coaxial FRC 6 is connected to the substrate 9 via the fine coaxial FRC connector.

In FIG. 2, inside the base insulator 1, a conductive signal contact 2 having a signal wire pressure contact portion 2a, an insulator press-fit portion 2b, and a leaf spring pin header contact portion 2c, and a ground wire pressure contact portion 3a.
And insulator press-fit portion 3b and pin header contact portion 3c
And a conductive ground contact 3 having the following. These signal line pressure contact portions 2a include a fine wire coaxial FR
The signal line 7 separated from C6 is pressed. The ground wire 8 is similarly pressed against the ground wire pressure contact portion 3a.

The signal line pressure contact portion 2a and the ground line pressure contact portion 3a are located in a concave portion 1a formed on the upper portion of the base insulator 1. In the recess 1a,
The granular high dielectric 4 is filled, and the recess 1a is covered with a cover insulator 5 made of synthetic resin after filling. Ceramics, plastics, and the like are used as the high dielectric 4. Further, the high dielectric 4 is not limited to a granular material as shown in FIG. 2, but may be a powder, a block, or a liquid. And with the above configuration,
The signals from the signal line 7 and the ground line 8 of the fine coaxial FRC 6 are connected to the signal contact 2 and the ground contact 3.
Through the pin header 10 on the substrate 9.

Next, with reference to FIGS. 3 to 6, a description will be given of a procedure for manufacturing the connection structure of this embodiment. FIG. 3 is a view showing a state before the signal contact 2 and the ground contact 3 are pressed against the base insulator 1. The base insulator 1 has a mounting hole 1 b for the signal contact 2.
And a mounting hole 1c for the ground contact 3 are formed. In the example shown, a plurality of the pair of mounting holes 1b and 1c are arranged in parallel. Then, from this state, as shown in FIG. 4, after the signal contact 2 and the ground contact 3 are press-fitted into the base insulator 1, the fine coaxial FRC6 is fitted inside the cover insulator, and the signal wire 7 of the fine coaxial FRC6 and the ground wire are fitted. Divide eight.

Thereafter, as shown in FIG. 5, the signal line 7 and the ground line 8 are pressed against the signal line pressure contact portion 2a of the signal contact 2 and the ground line pressure contact portion 3a of the ground contact 3, respectively. In this case, the pressure welding is performed using a pressure welding jig or the like as in the above-described conventional example. Next, the granular high dielectric substance 4 is formed in the concave portion 1a of the base insulator 1.
And cover the top insulator 5 with the cover insulator 5 over the upper opening of the recess 1a of the base insulator 1. As a result, as shown in FIG. 6, the high dielectric material 4 is packed between the cover insulator 5 and the base insulator 1, and the impedance of the fine coaxial FRC connector is reduced. ) Is completed.

FIG. 7 is a perspective view showing another embodiment of the present invention. In this embodiment, the base insulator 11
A wall portion 11d made of a material having a low dielectric constant is formed between a pair of convex portions 11b and 11c adjacent to the concave portion 11a to partition the signal contacts 2 and the ground contacts 3. In addition, such a wall part 11d
Is integrally formed with the base insulator 11 in the illustrated example, but may be attached by attaching or bonding a separate body. Other configurations of this embodiment are the same as those of the above-described embodiment, and a description thereof will be omitted.

Here, when the high dielectric 4 is inserted between the adjacent signal contacts 2 as described above,
One signal contact 2 and the other signal contact 2 are easily electromagnetically connected. In other words, the insertion of the high dielectric 4 causes a state in which crosstalk easily occurs between the adjacent signal contacts 2. On the other hand, by providing the low-permittivity wall portion 11d between the signal contacts 2 as in the embodiment of FIG. 7, the dielectric constant between the signal contacts 2 is reduced. Crosstalk can be prevented.

[0017]

As described above, according to the present invention, by providing a high dielectric substance, the characteristic impedance at the connection portion can be reduced or corrected. For this reason, the impedance matching at the connection portion is improved, and a connection portion structure of the connector corresponding to high-speed transmission, that is, a high-speed digital signal with a sharp rise can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of a fine-wire coaxial FRC connector having a connection structure according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the fine-wire coaxial FRC connector of FIG. 1;

FIG. 3 is a diagram illustrating a connector for a thin-wire coaxial FRC shown in FIG. 1;
It is explanatory drawing of the procedure which connects RC.

FIG. 4 shows a thin coaxial F connector for the thin coaxial FRC connector of FIG.
It is explanatory drawing of the procedure which connects RC.

FIG. 5 is a diagram illustrating a connector for the thin-wire coaxial FRC shown in FIG. 1;
It is explanatory drawing of the procedure which connects RC.

FIG. 6 shows a micro coaxial F connector for the micro coaxial FRC connector of FIG.
It is explanatory drawing of the procedure which connects RC.

FIG. 7 is an explanatory view of a fine coaxial FRC connector having a connection structure according to another embodiment of the present invention.

FIG. 8 is an explanatory diagram of a thin-wire coaxial FRC connector having a conventional connection portion structure.

FIG. 9 is an explanatory view of a conventional thin-wire coaxial FRC connector having a connection portion structure.

FIG. 10 is a cross-sectional view of a conventional thin-wire coaxial FRC connector having a connection portion structure.

FIG. 11 is a cross-sectional view of a conventional thin-wire coaxial FRC connector having a connection portion structure.

[Explanation of symbols]

 1, 11 Base insulator 1a, 11a Concave part 2, 12 Signal contact 2a, 12a Signal line pressure contact part 2b, 12b Insulator press-fit part 2c, 12c Pin header contact part 3, 13 Ground contact 3a, 13a Ground line pressure contact part 3b, 13b Insulator Press-fit portion 3c, 13c Pin header contact portion 4 High dielectric 5, 14 Cover insulator 6, 15, Fine coaxial FRC 7, 16 Signal wire 8, 17 Ground wire 9 Substrate 10 Pin header 18 Press-fitting jig

Continuation of the front page (56) References JP-A-62-24582 (JP, A) JP-A-63-166171 (JP, A) JP-A-6-85624 (JP, A) JP-A-6-1966881 (JP JP-A-3-205772 (JP, A) JP-A-1-2722061 (JP, A) JP-A-62-264080 (JP, A) JP-A-54-35390 (JP, A) JP-A-3-233879 (JP, A) JP-A-5-211080 (JP, A) JP-A-3-41803 (JP, A) JP-A-47-7337 (JP, A) JP-A-63-216366 (JP, A) A) JP-A-5-275139 (JP, A) JP-A 5-72070 (JP, U) JP-A 57-75489 (JP, U) JP-A 4-116368 (JP, U) JP-A 4 -54169 (JP, U) Japanese Utility Model Showa 58-109179 (JP, U) Table 8-8-506210 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) H01R 17/04

Claims (2)

(57) [Claims] 1. A plurality of signal contacts are respectively <br/> connected to the signal line of the plurality of signal line, a plurality of ground which are respectively connected to a ground line of said plurality of signal <br/> No. lines <br A connection portion of the connector including the contact portion, wherein the connector has a recess for accommodating the connection portion, and the recess is filled with a high dielectric material so as to cover the connection portion; A plurality of connection portions having the signal contact and the ground contact are arranged adjacent to each other with an interval therebetween, and a low-permittivity wall portion is provided between the connection portions. Part structure. 2. The connection structure of a connector according to claim 1, wherein said high dielectric substance is made of a powder, granule or block having a high dielectric constant.