KR-20260067316-A - CONNECTOR

KR20260067316AKR 20260067316 AKR20260067316 AKR 20260067316AKR-20260067316-A

Abstract

(Project) In a connector that connects a balanced conductor to a substrate, the isolation characteristics of the connector are improved and noise reduction is achieved. (Solution) A connector (1) comprises a signal terminal, a first ground terminal (21), a second ground terminal (31), and a housing (51). The housing (51) has an insertion portion (52) for inserting the end of a balanced conductor into the housing (51) from the front of the housing (51). The first ground terminal (21) is positioned to the right and left of the signal terminal, respectively, and the signal terminal and the first ground terminal (21) extend forward from the rear of the housing (51). The second ground terminal (31) is positioned to the right of the first ground terminal (21) on the right or to the left of the first ground terminal (21) on the left, and also extends backward from the entirety of the housing (51). When the connector (1) is viewed from the right or left, the entirety of the signal terminal, the entirety of the first ground terminal (21), and the second ground terminal (31) The rear parts of each overlap each other.

Inventors

사와이 다카시

Assignees

히로세덴끼 가부시끼가이샤

Dates

Publication Date: 20260512
Application Date: 20251022
Priority Date: 20241105

Claims (10)

As a connector for connecting balanced conductors to a substrate, A plurality of terminals and a housing supporting the plurality of terminals are provided, The above housing has an insertion portion for inserting the end of the balance conductor into the housing from the front of the housing, and The above plurality of terminals are, A signal terminal extending forward from the rear of the housing, with the rear portion connected to the signal terminal connection portion of the substrate, and the entire portion contacting the signal terminal contact portion formed on the lower surface of the end of the balanced conductor, and Two first ground terminals, each extending forward from the rear of the housing and respectively positioned to the right and left of the signal terminal, with their respective rear ends connected to the ground terminal connection portion of the substrate and their respective entire ends in contact with the ground terminal contact portion formed on the lower surface of the end of the balanced conductor, and It includes a second ground terminal that extends rearward from the entire housing and is positioned to the right of the first ground terminal positioned to the right of the signal terminal or to the left of the first ground terminal positioned to the left of the signal terminal, the entire portion of which is connected to the ground terminal connection portion of the substrate, and the rear portion of which contacts the ground terminal contact portion formed on the lower surface of the end of the balanced conductor. A connector characterized in that, when the connector is viewed from the right or left, the entire signal terminal, the entire portion of each of the two first ground terminals, and the rear portion of the second ground terminal overlap each other.
In Article 1, A connector characterized in that the rear end of the second ground terminal is located at a rear end of each of the signal terminal and the two first ground terminals.
In Article 1, A substrate connection portion connected to a signal terminal connection portion of the substrate is formed at the rear end of the signal terminal, and a transmission contact portion is formed at the front end of the signal terminal to contact a signal terminal contact portion formed on the lower surface of the end of the balanced conductor. A substrate connection portion connected to a ground terminal connection portion of the substrate is formed at the rear end of each of the first ground terminals, and a transmission contact portion is formed at the front end of each of the first ground terminals to contact a ground terminal contact portion formed on the lower surface of the end of the balanced conductor. A substrate connection portion connected to a ground terminal connection portion of the substrate is formed at the front end of the second ground terminal, and a transmission contact portion connected to a ground terminal contact portion formed on the lower surface of the end of the balanced conductor is formed at the rear end of the second ground terminal. A connector characterized in that the respective substrate connection portions of the signal terminal and the two first ground terminals are located at the rear end of the housing, the substrate connection portion of the second ground terminal is located at the front end of the housing, and the respective transmission contact portions of the signal terminal, the two first ground terminals, and the second ground terminal are located at the middle portion of the housing in the front-rear direction.
In Article 1, The above plurality of terminals are, A connector characterized by including a third ground terminal that is arranged to overlap with the entire signal terminal, the entire two first ground terminals, and the rear portion of the second ground terminal when viewed from above, with a portion of which is connected to the ground terminal connection portion of the substrate and another portion of which is connected to the ground terminal contact portion formed on the upper surface of the end of the balanced conductor.
In Article 4, A transmission contact portion is formed at the front end of the above signal terminal to contact the signal terminal contact portion formed on the lower surface of the end of the above balanced conductor, and A transmission body contact portion is formed at the front end of each of the first ground terminals above, which contacts a ground terminal contact portion formed on the lower surface of the end of the balanced conductor, and A transmission contact portion is formed at the rear end of the second ground terminal that contacts a ground terminal contact portion formed on the lower surface of the end of the balanced conductor, and The above-mentioned third ground terminal has a plate-shaped shielding portion extended in the front-rear and left-right directions, and The shielding portion is located above the respective transmission contact portions of the signal terminal, the two first ground terminals, and the second ground terminal, and The right edge of the shielding portion is located to the right of the transmission contact portion of the terminal positioned furthest to the right among the signal terminal, the two first ground terminals, and the second ground terminal, and A connector characterized in that the left edge of the shielding portion is located to the left of the transmission contact portion of the terminal positioned furthest to the left among the signal terminal, the two first ground terminals, and the second ground terminal.
In Article 4, A transmission contact portion is formed at the front end of the above signal terminal to contact the signal terminal contact portion formed on the lower surface of the end of the above balanced conductor, and A transmission body contact portion is formed at the front end of each of the first ground terminals above, which contacts a ground terminal contact portion formed on the lower surface of the end of the balanced conductor, and A transmission contact portion is formed at the rear end of the second ground terminal that contacts a ground terminal contact portion formed on the lower surface of the end of the balanced conductor, and The above-mentioned third ground terminal has a plate-shaped shielding portion extended in the front-rear and left-right directions, and The shielding portion is located above the respective transmission contact portions of the signal terminal, the two first ground terminals, and the second ground terminal, and The front edge of the shielding portion is located ahead of the front end of the terminal located furthest among the signal terminal and the two first ground terminals, or the position of the front edge of the shielding portion in the front-rear direction coincides with the position in the front-rear direction of the front end of the terminal located furthest among the signal terminal and the two first ground terminals. A connector characterized in that the rear edge of the shielding portion is located at a rear end of the second ground terminal, or the position of the rear edge of the shielding portion in the front-rear direction coincides with the position of the rear end of the second ground terminal in the front-rear direction.
In Article 1, The plurality of terminals above includes two of the signal terminals, and A connector characterized in that, when viewed from the right or left side, the entire portion of each of the two signal terminals, the entire portion of each of the two first ground terminals, and the rear portion of the second ground terminal overlap each other.
In any one of paragraphs 1 to 3, A connector characterized by having a plurality of terminal sets including the signal terminal, the two first ground terminals, and the second ground terminal, wherein the plurality of terminal sets are arranged in a left-right direction.
In any one of paragraphs 4 through 6, A connector characterized by having a plurality of terminal sets including the signal terminal, the two first ground terminals, the second ground terminal, and the third ground terminal, wherein the plurality of terminal sets are arranged in a left-right direction.
In Article 7, A connector characterized by having a plurality of terminal sets including the above two signal terminals, the above two first ground terminals and the above second ground terminal, wherein the plurality of terminal sets are arranged in a left-right direction.

Description

Connector The present invention relates primarily to a connector for connecting FPC (Flexible Printed Circuits) or FFC (Flexible Flat Cable) to a rigid substrate. Currently, FPCs or FFCs are widely used as transmission media for transmitting signals or power. Hereinafter, FPCs, FFCs, and other balanced transmission media will be referred to as "balanced conductors." In addition, connectors that connect balanced conductors to a substrate (rigid substrate) are currently widely used. An example of such a connector is described in Japanese Patent Publication No. 2020-155243 (Patent Document 1). Furthermore, hereinafter, when simply referred to as "substrate," it shall mean a rigid substrate. FIG. 1 is a perspective view showing the connector, substrate, and balanced conductor of an embodiment of the present invention as seen from the upper rear left side. FIG. 2 is an explanatory diagram showing the upper surface of a substrate in an embodiment of the present invention. Figure 3 (A) is an explanatory diagram showing the upper surface of a balanced conductor in an embodiment of the present invention, and (B) is an explanatory diagram showing the lower surface of the balanced conductor. (A) of FIG. 4 is a cross-sectional view showing a balanced conductor cut along the cutting line bb in FIG. 3(A), and (B) is a cross-sectional view showing a balanced conductor cut along the cutting line cc in FIG. 3(A). FIG. 5 is a perspective view showing the connector of an embodiment of the present invention with the lock lever separated from the housing, viewed from the upper rear left side. (A) of FIG. 6 is a front view of a connector of an embodiment of the present invention with the lock lever removed, and (B) is a top view of the connector. (A) of FIG. 7 is a bottom view of a connector of an embodiment of the present invention with the lock lever removed, and (B) is a back view of the connector. (A) of FIG. 8 is a cross-sectional view of a connector cut along the cutting line dd in FIG. 6(A), (B) is a cross-sectional view of a connector cut along the cutting line ee in FIG. 6(A), and (C) is a cross-sectional view of a connector cut along the cutting line ff in FIG. 6(A). FIG. 9 is an explanatory diagram showing four sets of terminals in a connector of an embodiment of the present invention. FIG. 10 is an explanatory diagram showing the structure and operation of a lock lever in a connector of an embodiment of the present invention. (A) of FIG. 11 is a perspective view showing a signal terminal in a connector of an embodiment of the present invention, (B) is a perspective view showing a first ground terminal in the connector, (C) is a perspective view showing a second ground terminal in the connector, and (D) is a perspective view showing a third ground terminal in the connector. FIG. 12 is an explanatory diagram showing a top view of a terminal set in a connector of an embodiment of the present invention. FIG. 13 is an explanatory diagram showing the state of a terminal set in a connector of an embodiment of the present invention as viewed from the right. FIG. 14 is an explanatory diagram showing a state in which a signal terminal, a first ground terminal, and a second ground terminal are in contact with the lower surface of the end of a balanced conductor inserted into a housing in a connector of an embodiment of the present invention. FIG. 15 is an explanatory diagram showing a state in which a third ground terminal is in contact with the upper surface of the end of a balanced conductor inserted into a housing in a connector of an embodiment of the present invention. FIG. 16 is an explanatory diagram showing the measurement results of isolation characteristics in a connector of an embodiment of the present invention. FIG. 17 is an explanatory diagram showing the measurement results of the isolation characteristics in the connector of the first comparative example. FIG. 18 is an explanatory diagram showing the measurement results of the isolation characteristics in the connector of the second comparative example. FIG. 19 is an explanatory diagram showing the measurement results of the isolation characteristics in the connector of the third comparative example. FIG. 20 is an explanatory diagram showing the measurement results of the isolation characteristics in the connector of the fourth comparative example. FIG. 21 is an explanatory diagram showing the measurement results of the isolation characteristics in the connector of the 5th comparative example. FIG. 22 is an explanatory diagram showing a modified example of a connector of an embodiment of the present invention. Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, regarding the connector of the present embodiment, when describing the directions of up (Ud), down (Dd), front (Fd), back (Bd), left (Ld), and right (Rd), the arrows drawn at the bottom left of FIGS. 1, 2, 4 to 10 and 12 to 22 will be followed.