JP2004253255A - Connector for coaxial cable - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the height of a connector for connecting a coaxial very fine cable to a printed board and reduce the number of components, for example, in the connector for connecting the coaxial cable to the printed board. <P>SOLUTION: The connector 1 for the coaxial cable comprises a contact part 1a of a metallic plane-like body crossing each shield wire in a plurality of coaxial cables arranged in parallel, pressing an electrically connected gland plate to conduct electrical continuity; and a board mounting part 1b installed for fixing to the printed board at both ends in the length direction of the contact part. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a connector for connecting a coaxial cable to a printed circuit board, and more particularly, to reduce the height of a connector for connecting an ultrafine coaxial cable to a printed circuit board, and to reduce the number of components. The present invention relates to a coaxial cable connector suitable for measures against electromagnetic interference (Electro Magnetic Interference, hereinafter referred to as EMI).
[0002]
[Prior art]
Conventionally, when a coaxial cable is connected to a printed circuit board, for example, the outer sheath is peeled off, the shield wire is exposed, the resin insulator is cut off to make the core wire appear, and the outer sheath is exposed with a metal clamp. It is known that a part is held and a shield wire is held, fixed to a printed board and soldered to a ground pad, and the core wire is soldered to a circuit on the printed board (see, for example, Patent Document 1, See Patent Document 2.).
[0003]
[Patent Document 1]
Japanese Utility Model Laid-Open Publication No. 6-33364 (pages 1 and 2, FIGS. 1 to 3)
[Patent Document 2]
Japanese Utility Model Laid-Open No. 6-21159 (Pages 1 and 2; Fig. 1)
[0004]
[Problems to be solved by the invention]
In such a connection structure of a coaxial cable, a plurality of ultrafine coaxial cables are connected to a printed circuit board due to recent miniaturization of electronic devices. Therefore, as shown in FIG. 11, a printed circuit board 21 provided with a large number of connection circuits and an insulator 22 made of synthetic resin are integrally molded, and a core wire 23a of a coaxial cable 23 is connected to the connection circuit. Solder the insulator of the coaxial cable 23 through the groove of the alignment plate 22a of the insulator 22, and solder the thin metal ground plate 23b across the shield wire 23c of the coaxial cable 23 to the insulator. A method is proposed in which the metal shell 24 is housed and clamped in a groove portion 22b of the base 22, and then the metal shell 24 is inserted into the insulator 22 from one side as shown in the figure to assemble.
[0005]
A spring-like terminal 24a of the shell 24 abuts on the ground plate 23b and is grounded. Then, as shown in FIG. 12, the other connection circuit of the printed circuit board 21 is connected to the connector 25 of the other side, and the electrical connection of the coaxial cable 23 is achieved. However, since the connector 20 for the coaxial cable integrally forms the printed board 21 with the insulator 22 made of synthetic resin, the product cost increases and the height from the printed board mounting surface increases. Also, the number of parts as a whole is large. The coaxial cable connector according to the present invention has been proposed to solve such a problem.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the gist of the connector for a coaxial cable according to the present invention is to achieve electrical continuity by pressing a ground plate electrically connected across each shielded wire in a plurality of coaxial cables provided side by side. It comprises a contact portion of a metal sheet and a board mounting portion provided at both ends in the longitudinal direction of the contact portion for fixing to a printed board.
In addition, the gist of the connector according to the present invention is that a plurality of coaxial cables provided in parallel have a contact portion of a metal planar body that traverses each shielded wire and achieves electrical continuity, and a longitudinal direction of the contact portion. And a board mounting portion provided at both ends for fixing to the printed circuit board.
[0007]
A concave portion or a hole that surrounds and accommodates the ground plate is provided in the contact portion;
The board mounting portion is a soldering protrusion protruding along the longitudinal direction;
The substrate mounting portion is an earth clamp bent in a substantially orthogonal direction from an end of the contact portion and inserted into a mounting hole of a printed circuit board;
The substrate mounting portion may be an earth clamp which is bent in a substantially L shape from an end of the contact portion and soldered to a mounting surface of the printed circuit board.
[0008]
ADVANTAGE OF THE INVENTION According to the connector for coaxial cables which concerns on this invention, an insulator made of a synthetic resin becomes unnecessary, the number of parts is reduced, the whole connector is further thinned, the number of assembly steps is reduced, and parts management is also easy. become.
[0009]
The contact portion is provided with a concave portion or a hole portion that surrounds and accommodates the ground plate, or the board mounting portion is a soldering convex portion protruding along the longitudinal direction, or An earth clamp bent in a direction substantially perpendicular to the end of the contact portion and inserted into the mounting hole of the printed circuit board, or bent into a substantially L shape from the end of the contact portion and soldered to the mounting surface of the printed circuit board With such a ground clamp, the work of attaching the connector to the printed circuit board becomes efficient.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, the coaxial cable connector 1 according to the present invention will be described with reference to the drawings. In order to facilitate understanding of the invention, portions corresponding to the conventional example will be described with the same reference numerals as in the conventional example.
[0011]
As shown in FIG. 1, the connector 1 for a coaxial cable according to the first embodiment includes a ground plate 23b that is electrically connected by soldering across each shield wire 23c of a plurality of coaxial cables 23 provided side by side. The contact portion 1a is made of a metal sheet and presses down to establish electrical continuity, and a board mounting portion 1b provided at both ends in the longitudinal direction of the contact portion 1a for fixing to the printed board 21. .
[0012]
The contact portion 1a is provided with a concave portion 1c that surrounds and accommodates the ground plate 23b. The board mounting portion 1b is a soldering protrusion protruding along the longitudinal direction. The connector 1 is an elongated metal flat plate as a whole.
[0013]
As shown in FIG. 1C, the connector 1 and the coaxial cable 23 are both mounted on the printed circuit board 21 with the ground plate 23b of the coaxial cable 23 aligned with the recess 1c. The connector 1 is fixed on the ground pattern 21d of the printed board 21 by soldering the projection 1b, which is the board mounting portion, to the pad of the ground pattern 21d. At this time, each core wire 23a of the coaxial cable 23 is connected by soldering to the center conductor connection portion 21a of the connection circuit on the printed circuit board 21. As a result, the connector for coaxial cables as an EMI countermeasure product is a connector that is shorter from the printed circuit board surface as a whole and has a smaller number of components.
[0014]
As the coaxial cable connector 1e according to the second embodiment, as shown in FIG. 2, the shape of a portion of the contact portion 1a that presses the ground plate 23b is a through hole 1d. When the connector 1e and the ground plate 23b of the coaxial cable 23 are aligned, the hole 1d facilitates visual alignment.
[0015]
As a third embodiment, as shown in FIG. 3, the connector 2 serves as a board mounting portion 2b thereof, which is bent in a substantially orthogonal direction from the end of the contact portion 2a and inserted into the mounting hole 21c of the printed circuit board 21. It is provided with a clamp. The contact portion 2a is provided with a concave portion 2c (similar to the concave portion 1c) for the ground plate 23b.
[0016]
As shown in FIG. 3C, the ground plate 23b of the coaxial cable 23 is housed in the recess 2c by the connector 2, and in this state, the earth clamp 2b is inserted into the mounting hole 21c of the printed circuit board 21. Then, as shown in FIG. 4, the connector 2 is attached to the printed circuit board 21 by caulking the earth clamp 2b. In this way, as shown in FIG. 5, the mating connector 25 is fitted and connected to the mating connector 21b of the printed circuit board 21.
[0017]
As shown in FIG. 6, the connector 3 according to the fourth embodiment is a modified example of the third embodiment. In the contact portion 3a, a hole 3c penetrates instead of the concave portion 2c of the third embodiment. It is what it was. In this manner, the ground plate 23b of the coaxial cable 23 can be pressed to achieve conduction. The earth clamp 3b is the same as the earth clamp 2b of the third embodiment.
[0018]
In the connector 4 according to the fifth embodiment, as shown in FIG. 7, the board mounting portion 4b is bent in a substantially L shape from the end of the contact portion 4a, and soldered to the ground pattern 21d on the mounting surface of the printed board 21. It is an earth clamp to be attached.
[0019]
Further, as shown in FIG. 7C, a recess 4c for accommodating and holding the ground plate 23b of the coaxial cable 23 is provided. It is also suggested to do.
[0020]
In order to assemble the connector 4, as shown in FIGS. 8 and 9, the core wire 23a of the coaxial cable 23 is placed so as to correspond to the central conductor connecting portion 21a of the circuit provided along with the printed circuit board 21. I do. The concave portion 4c is applied to the ground plate 23b of the coaxial cable 23, the connector 4 is mounted on the ground pattern 21d of the printed board 21, and soldered at the board mounting portion 4b.
[0021]
As shown in FIG. 10, the connector 5 according to the sixth embodiment includes, as shown in FIG. 10, an abutting portion 5 a of a metal sheet-like body that traverses each shielded wire in a plurality of coaxial cables 23 and electrically connects the wires. A board mounting portion 5b is provided at both ends in the longitudinal direction of the contact portion 5a so as to be fixed to a printed board. In this embodiment, the connector 5 also serves as the conventional ground plate 23b. Accordingly, as shown in FIG. 10A, the shielded wires 23c of the coaxial cable 23 are aligned and soldered to the connector 5, and then, as shown in FIG. It is placed on top and soldered at the board mounting part 5b. As a result, the number of parts can be further reduced.
[0022]
【The invention's effect】
As described above, the connector for a coaxial cable according to the present invention is a metal coaxial cable having a plurality of coaxial cables arranged side by side, each of which is formed of a metal sheet that traverses each shielded wire and presses a ground plate electrically connected to achieve electrical conduction. Since the contact portion of the body and the board mounting portions provided for fixing to the printed board at both ends in the longitudinal direction of the contact portion, the number of components of the connector is reduced, and the printed board mounting surface is reduced. The height of the device is low, which contributes to a reduction in the thickness of electric and electronic devices.
[0023]
Since the contact portion is provided with a concave portion or a hole portion that surrounds and accommodates the ground plate, it serves as a positioning mark when assembling the connector, thereby facilitating handling.
[0024]
The board mounting portion is a soldering protrusion protruding along the longitudinal direction, or an earth clamp bent in a substantially orthogonal direction from an end of the contact portion and inserted into a mounting hole of a printed circuit board. This facilitates fixation to a printed circuit board. Further, since the board mounting portion is an earth clamp which is bent in a substantially L shape from the end of the contact portion and soldered to the mounting surface of the printed board, the connector itself is not deformed and the coaxial cable is efficiently used. There is an effect that the ground plate can be pressed.
[0025]
Further, in order to fix to a printed board at a contact portion of a metal sheet-like body which traverses each shield line in a plurality of coaxial cables provided side by side and establish electrical conduction, and at both longitudinal ends of the contact portion. , The number of components is reduced, the cost is reduced, and component management is facilitated.
[Brief description of the drawings]
1A is a plan view of a coaxial cable connector 1 according to a first embodiment of the present invention, FIG. 1B is an enlarged side view, and FIG.
FIG. 2 is a plan view (A) and a side view (B) of a coaxial cable connector 1e according to the second embodiment.
FIG. 3 is a plan view (A), a side view (B), and an explanatory view (C) showing how the connector is assembled, of the coaxial cable connector 2 according to the third embodiment.
FIG. 4 is a side view (A) and a plan view (B) of a state where the coaxial cable connector 2 according to the third embodiment is assembled.
FIGS. 5A and 5B are an explanatory view showing a use state of the coaxial cable connector 2 according to the third embodiment and a side view of a mating connector 25 thereof.
FIG. 6 is a plan view (A) and a side view (B) of the coaxial cable connector 3 according to the fourth embodiment.
FIG. 7 is a plan view (A), a side view (B), and a partially enlarged detailed view (C) of the coaxial cable connector 4 according to the fifth embodiment.
FIG. 8 is an explanatory diagram illustrating a use state of the coaxial cable connector 4 according to the fifth embodiment.
FIG. 9 is a plan view (A) and a side view (B) illustrating a use state of the coaxial cable connector 4 according to the fifth embodiment.
FIG. 10 is a plan view (A) illustrating the assembled state of the coaxial cable connector 5 according to the sixth embodiment, a side view (B) of the connector 5, and a plan view (C) illustrating the used state. is there.
FIG. 11 is an explanatory view showing assembly of a coaxial cable connector 20 according to a conventional example.
FIG. 12 is an explanatory diagram (A) of a use state of the coaxial cable connector 20 according to the conventional example, and a side view (B) of the connector 20.
[Explanation of symbols]
1,1e, 2,3,4,5 Coaxial cable connector of each embodiment,
1a, 2a, 3a, 4a, 5a contact portion,
1b, 4b, 5b Board mounting part,
1c, 2c recess, 1d hole,
2b, 3b earth clamp (board mounting part),
21 printed circuit board, 21a central conductor connection portion,
21b mating part, 21c mounting hole,
21d ground pattern,
22 insulator, 23 coaxial cable,
23a core wire, 23b ground plate,
23c shielded wire,
24 shells, 25 connectors.

Claims (6)

An abutting portion of a metal sheet-like body that holds the electrically connected ground plate traversing each shield line in a plurality of juxtaposed coaxial cables to achieve electrical conduction,
Consisting of a board mounting portion provided for fixing to a printed board at both ends in the longitudinal direction of the contact portion,
A connector for a coaxial cable, characterized in that: The contact portion is provided with a recess or a hole that surrounds and accommodates the ground plate,
The coaxial cable connector according to claim 1, wherein: An abutting portion of a metal planar body that traverses each shielded wire in a plurality of juxtaposed coaxial cables to achieve electrical conduction,
Consisting of a board mounting portion provided for fixing to a printed board at both ends in the longitudinal direction of the contact portion,
A connector for a coaxial cable, characterized in that: The board mounting portion is a soldering protrusion protruding along the longitudinal direction,
The coaxial cable connector according to any one of claims 1 to 3, wherein: The board mounting portion is an earth clamp that is bent in a substantially orthogonal direction from an end of the contact portion and inserted into a mounting hole of the printed circuit board,
The coaxial cable connector according to any one of claims 1 to 3, wherein: The substrate mounting portion is an earth clamp which is bent substantially in an L shape from the end of the contact portion and soldered to the mounting surface of the printed circuit board;
The coaxial cable connector according to any one of claims 1 to 3, wherein:

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