JP2000260529A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a press-fit connectable connector for reducing the size, improving the transmission signal high speed transmission characteristic, and moreover solving EMI problems. SOLUTION: A right-angled female-type connector 1, constructed of a contact part 3 having a plurality of contacts 8-12 and a housing 2 holing the contact part 3, is formed so that the signal input part and the output part of each of the contacts 8-12 form a right angle. In this case, a terminal part 13 of each of the contacts 8-12 in the contact part 3 is independently molded through insert- molding by a dielectric molding 6 respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector used for an electronic device.

[0002]

2. Description of the Related Art With the recent improvement in performance and miniaturization of electronic devices, there is a female connector 40 used for them as shown in FIG. The female connector 40 includes a contact portion 42 having a plurality of contacts 41 and a housing 43 for accommodating the contact portion 42, and is required to have high signal transmission performance and high-density board mounting.

[0003] For this reason, when the substrates are mainly connected to each other, a pseudo coaxial structure in which the signal contacts 41 are surrounded by the ground contacts 41 is employed. Rather, it has improved transmission characteristics for high-frequency signals and has the effect of suppressing crosstalk.

[0004]

However, in the conventional female connector 40, when the ratio of the number of the signal contacts 41 to the number of the ground contacts 41 is 1: 1, only about half of the contacts 41 are used for signal transmission. Therefore, there is a problem that the dimensions of the connector become large and the original demand for high density cannot be sufficiently satisfied.

[0005] In addition, transmission signals of recent electronic devices tend to be higher speed and higher frequency.
Even at 0, there is a problem that the high-speed transmission characteristics are limited.
In particular, the female connector 40 mounted on the package board side board is a right angle type in which the angle between the signal input portion and the output portion of the contact 41 is a right angle, and the terminal portion of the contact 41 is in the air. In a bare state.

Therefore, as the transmission signal becomes higher in frequency, the emission of the unnecessary electromagnetic wave from the terminal portion of the contact 41 becomes large, and there is a problem that a so-called EMI problem occurs, which adversely affects other devices.

On the other hand, the right angle type female connector 40 cannot be driven by a press-fitting machine at the time of connection to a substrate because the strength of the terminal portion of the exposed contact 41 is weak.

[0008] For this reason, since the connection with the substrate uses the solder connection, there is a problem that it takes more man-hours than the press-fit connection and a problem that a high-temperature heat load is applied to the substrate occurs. .

[0009] The present invention has been made in view of the above problems, and an object thereof is to reduce the size and improve the high-speed transmission characteristics of a transmission signal.
Moreover, it is an object of the present invention to solve the EMI problem and to provide a connector capable of press-fit connection.

The above and other objects and novel features of the present invention will become apparent from the description of the present specification and the accompanying drawings.

[0011]

Means for Solving the Problems In order to solve the above problems, the present invention has the following constitution. The gist of the invention according to claim 1 is that a contact portion having a plurality of contacts and a housing holding the contact portion are formed such that an angle between a signal input portion and an output portion of the contact is a right angle. The right angle type female connector is characterized in that the terminal portions of the respective contacts of the contact portions are independently insert-molded by dielectric molding.

The gist of the present invention is that the top surface of the dielectric mold of the contact portion is formed horizontally with respect to the substrate so as to enable press-fit connection with the substrate. It is assumed that.

[0013] The gist of the invention according to claim 3 is that all of the surfaces of the dielectric mold other than the surface in contact with the contact are covered with a shielding metal plate or metal plating, and the contact is removed. The entire surface of the housing including the surface of the contact storage portion to be stored is covered with metal plating, and all of them are connected to the board ground, so that the respective contacts are completely independently electrically shielded. It is characterized by having.

According to a fourth aspect of the present invention, the terminal portion of the contact has a coaxial structure.

The gist of the invention described in claim 5 is that all of the contacts are used for signal transmission.

According to a sixth aspect of the present invention, the contact and the contact base of the contact are formed in a shape arranged below a substrate surface to be press-fit connected. .

[0017]

Embodiments of the present invention will be described below in detail with reference to the drawings. In describing the embodiments, those having the same functions will be denoted by the same reference numerals.

FIG. 1 is a sectional view of a connector showing a first embodiment of the present invention, FIG. 2 is a sectional view of a housing and a contact portion of the connector showing a first embodiment of the present invention, and FIG. FIGS. 4A to 4E are perspective views of A to E row contacts of the connector according to the first embodiment of the present invention, FIG.
FIG. 5 is a front view of a housing of a connector showing a first embodiment of the present invention and a sectional view taken along line AA of FIG. 5, FIG. 5 is a sectional view taken along line BB of FIG. 2, and FIG. FIG. 7 is a sectional view of a connector showing a second embodiment of the present invention, and FIG. 7 is a sectional view of a contact portion of the connector showing a second embodiment of the present invention.

In the connector of the first embodiment shown in FIGS. 1 and 2, the female connector 1 comprises a housing 2 and a contact portion 3, and the contact portion 3 is provided with a convex locking portion 17 provided on the housing 2. It is held by the housing 2 by connection with the concave locking portion 18 provided in the contact portion 3.

As shown in detail in FIG. 4, the housing 2 has a cylindrical metal shield plate 4 electrically connected to a ground pin 7 having a press-fit structure inside a mold 5 and a surface of the mold 5. All are coated with a metal plating 15 for shielding, and the metal plating 15 is formed in the opening 19 in the contact insertion direction of the housing 2.
Is applied to the metal shield plate 4 exposed only at the upper and lower surfaces of the metal shield plate 4 to be electrically connected to the ground pin 7.

An insulating resin 16 is applied on the metal plating 15 provided on the inner wall of the contact housing 31 of the housing 2 in order to prevent conduction between the inserted contacts and the housing 2.

The contact portion 3 includes a column A contact 8 shown in FIG. 3A, a column B contact 9 shown in FIG. 3B, a column C contact 10 shown in FIG.
D-column contact 11 shown in (d) and FIG.
2 are formed without any gaps as shown in FIG. 2 and are arranged in a square lattice with no gaps in the plural sets in the longitudinal direction of the connector.

As shown in FIGS. 3 (a) to 3 (e), each contact in rows A to E is formed by bending a metal plate and a terminal portion 13 having a press-fit structure on the substrate connection side. It comprises a contact base 20 having a number of arm-shaped spring contacts 21.

The terminal 13 of each contact is insert-molded by the dielectric mold 6.
In the row A contact 8, the top shape of the dielectric mold 6 enables press-fit connection with the substrate.
As shown in FIG. 3A, it is formed to be horizontal with respect to the substrate.

A metal plate or metal plating 14 for shielding is applied to the surface of the dielectric mold 6 other than the surface in contact with the contact of each contact, and as shown in FIG. Is formed so that its cross section has a coaxial structure.

Next, the operation of the connector will be described.
The female connector 1 has a housing 2 as shown in FIG.
The press-fit connection is made to the through-hole portion of the package board side substrate in a state where the and the contact portion 3 are combined, and used in a state of being fitted with the male connector mounted on the motherboard side substrate.

At this time, since the ground pin 7 is electrically connected to the ground layer of the board, the metal plating 15 and the projection locking portion 17 electrically connected to the ground pin 7 via the metal shield plate 4 Metal plating 1 through locking portion 18
Metal plate or metal plating 1 electrically connected to 5
All 4 have a function as a ground.

That is, A used for signal transmission
Row contact 8, Row B contact 9, Row C contact 1
All of the 0, D row contacts 11 and E row contacts 12 are completely individually and independently electrically shielded.

Terminal part 1 of each contact having a coaxial structure
By adjusting the dielectric constant of the dielectric mold 6, the cross-sectional dimension of the terminal portion 13, and the thickness of the metal plate or metal plating 14, impedance matching is achieved, and the transmission line 3 has a high signal transmission performance.

Next, a second embodiment of the present invention is shown in FIGS. As shown in FIG. 6, the connector according to the second embodiment is a female connector 24 including a housing 22 and a contact portion 23 as in the first embodiment.

As shown in FIG. 7, the contact portion 23 includes five types of contacts, ie, an A-row contact 25, a B-row contact 26, a C-row contact 27, a D-row contact 28, and an E-row contact 29, as shown in FIG. As shown in the figure, the connectors are assembled without gaps, and are arranged in a square lattice shape without gaps in a plurality of sets in the longitudinal direction of the connector.

The connector according to the second embodiment has a shape in which the contact bases 30 of the D-row contacts 28 and the E-row contacts 29 are disposed below the surface of the substrate to which the press-fit connection is made.

Therefore, when mounted on a board, it is possible to keep the mounting height of the connector lower than in the first embodiment. The other configurations, operations, and effects of the second embodiment are the same as those of the first embodiment.

[0034]

Since the present invention is configured as described above, the following effects can be obtained. That is, in the present invention, each of the contacts in rows A to E used for signal transmission is completely surrounded by a metal plate or metal plating serving as a ground, and the terminals of the contacts are provided with impedance. Because of the matched coaxial structure, good transmission can be realized even during high-frequency signal transmission.

More specifically, the effect of suppressing crosstalk between adjacent contacts can be remarkably improved over signals in a wide frequency band, and transmission with low reflection loss can be realized. In addition, since unnecessary radiation of electromagnetic waves from the contact can be blocked, a so-called EMI problem that adversely affects other devices can be solved.

On the other hand, according to the connector of the present invention, it is not necessary to use the contacts for grounding for the same reason as described above. Therefore, even in a square lattice contact arrangement with a 2.0 mm pitch, for example, all the contacts are used for signal transmission. Can be used for Therefore, the density of the signal transmission contacts can be increased, and the size of the connector can be reduced.

On the other hand, the terminal portion of each contact is insert-molded by a dielectric mold. In particular, in the case of the row A contact, the upper surface shape of the dielectric mold enables press-fit connection with the substrate. Because it is formed so as to be horizontal to the substrate,
At the time of connection with the substrate, it can be driven by a machine using press fit.

Therefore, it is possible to reduce the number of soldering steps including the conventional pre-processing and post-processing, and to solve the problem that a high-temperature heat load is applied to the substrate.

Since the contact base of the contact is disposed below the surface of the substrate to be press-fit connected,
When mounted on a board, the mounting height of the connector can be kept low.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a connector according to a first embodiment of the present invention.

FIG. 2 is a sectional view of a housing and a contact portion of the connector according to the first embodiment of the present invention.

3A is a perspective view of a row A contact of the connector according to the first embodiment of the present invention, and FIG. 3B is a perspective view of a row B contact of the connector according to the first embodiment of the present invention; FIG. 3C is a perspective view of a C-row contact of the connector according to the first embodiment of the present invention, and FIG. 4D is a D-row contact of the connector according to the first embodiment of the present invention. FIG. 3E is a perspective view of an E-row contact of the connector according to the first embodiment of the present invention.

FIG. 4 is a front view of a housing of the connector and a cross-sectional view taken along the line AA of the connector according to the first embodiment of the present invention.

FIG. 5 is a sectional view taken along line BB of FIG. 2;

FIG. 6 is a sectional view of a connector according to a second embodiment of the present invention.

FIG. 7 is a sectional view of a contact portion of a connector according to a second embodiment of the present invention.

FIG. 8 is a sectional view of a conventional connector.

[Explanation of symbols]

 1,24 Female connector 2,22 Housing 3,23 Contact part 4 Metal shield plate 5 Mold 6 Dielectric mold 7 Ground pin 8,25 A row contact 9,26 B row contact 10, 27 C row contact 11,28 D Row contact 12, 29 E row contact 13 Terminal part 14, 15 Metal plating 16 Insulating resin 17 Convex locking part 18 Recessed locking part 19 Opening 20, 30 Contact base 21 Arm-shaped spring contact 31 Contact storage part

 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference)

Claims (6)

[Claims] A contact portion having a plurality of contacts and a housing for holding the contact portion;
In a female connector of a right angle type formed so that an angle between a signal input portion and an output portion of the contact is a right angle, the terminal portions of the respective contacts of the contact portion are independently formed by dielectric molding. A connector characterized by being insert-molded. 2. The connector according to claim 1, wherein an upper surface of the dielectric mold of the contact portion is formed horizontally with respect to the substrate so as to enable press-fit connection with the substrate. . 3. A surface of the dielectric mold other than a surface in contact with the contact is entirely covered with a shielding metal plate or metal plating, and a surface of a contact housing portion for housing the contact is provided. The entire surface of the housing, including the entire surface, is covered with metal plating, and all of them are connected to the substrate ground, so that each of the contacts is electrically shielded completely independently. 3. The connector according to 1 or 2. 4. The connector according to claim 3, wherein the terminal portion of the contact has a coaxial structure. 5. The connector according to claim 4, wherein all of said contacts are used for signal transmission. 6. The connector according to claim 5, wherein the contact and a contact base of the contact are formed below the surface of the substrate to be press-fit connected.