JPH0817520A - Connection structure for cable - Google Patents

Abstract

PURPOSE:To provide the connection structure of a cable capable of facilitating connection work for a cable and improving safety of connection to vibration. CONSTITUTION:A connector 3, having core wire and cable retaining parts 7 and 5, is fixed on the base board of an electronic circuit package 1. The core wire retaining part 7 has a signal connection foot 10 to be connected to a base board signal part. The cable retaining part 5 has an earth connection foot 9, to be connected to a base board earth part, and a protruded part 6 to be pressed in a cable 2 to be connected to the earth part of the cable 2. The core wire 8 of the cable 2 and the cable 2 are fixedly retained by the core wire retaining part 7 of the connector 3 and the cable retaining part 5 respectively to be covered by a lid 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable connecting structure, and more particularly to a connecting structure for a coaxial cable or the like in an electronic circuit package of a communication device.

[0002]

2. Description of the Related Art An electronic circuit package for a communication device has a structure in which a signal from the outside is connected to a substrate through a core wire such as a coaxial cable. In this case, the earth portion provided on the outside of the core wire via the insulator is exposed, and the earth metal fitting attached to the outside of the exposed portion is fixed and connected to the electronic circuit package. The grounding part is provided to protect the core wire from interference from the outside.

[0003]

However, in the case of the above-mentioned conventional structure, at the tip of the connecting side of the cable,
Since it is necessary to expose the ground portion by peeling off the cable jacket, the cable connection work is troublesome.

Further, in the structure in which the grounding part is fixed and connected by the grounding metal as described above, there is a problem that the connection in the grounding part is unstable against vibration and the like.

An object of the present invention is to provide a cable connecting structure which can easily perform a cable connecting operation and can improve the stability of the connection against vibration.

[0006]

According to the present invention, a connector having a core wire holding portion and a cable holding portion is fixed on a substrate,
The core wire holding portion has a signal connection foot connected to the board signal portion, and the cable holding portion has a ground connection foot connected to the board ground portion and a protruding portion press-fitted into the cable and connected to the ground portion. The core wire is fixedly held in the core wire holding portion, and the grounding portion is held in the cable holding portion.
Here, for example, the core wire holding portion has connection portions that come into contact with the core wire and the signal connection foot, respectively, and the cable holding portion has a ground plate that comes into contact with the projection portion and the ground connection foot, respectively. In addition, a structure may be adopted in which the core is held in the core holding portion and the cable is held in the cable holding portion, and the connector is covered to cover and fix the cable to the connector.

Further, according to the present invention, the fixed foot connected to the ground portion is inserted into the hole connected to the ground portion of the substrate for connection. Here, the fixed foot is, for example, integrally fixed to the ground portion.

[0008]

In the invention using the above connector, when the cable is attached, the core wire is housed in the core wire holder and the cable itself is housed in the cable holder.
Accordingly, the core wire can be easily connected to the board signal portion via the connection portion, and the ground portion can be easily connected to the board ground portion via the protrusion. Then, by covering the connector with the lid, the cable is fixedly held by the connector, and the stability of the connection against vibration is improved.

In another invention using the fixed foot, the grounding portion of the cable can be easily connected to the board grounding portion by inserting and connecting the fixed foot into the board terminal hole. Then, by fixing the fixed foot integrally to the ground portion of the cable, the stability of the connection against vibration can be improved.

[0010]

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

(Embodiment 1) FIGS. 1 to 4 show Embodiment 1 of the present invention. In these drawings, reference numeral 1 is an electronic circuit package composed of a substrate and the like, and a coaxial cable 2 is fixed by a connector 3 and a lid 4.

The connector 3 is made of synthetic resin or the like, and has a core wire holding portion 7 and a cable holding portion 5 as shown in FIG. 1, FIG. 2 or FIG. The core wire holding portion 7 is a semicircular concave portion, and a conductive semicylindrical connection portion 25 made of metal or the like is provided on the inner surface. The inner diameter of the connecting portion 25 is the same as or slightly smaller than the outer diameter of the core wire 8 of the coaxial cable 2.

The cable holding portion 5 is a semicircular concave portion, and is a conductive, semicylindrical ground plate 2 made of metal or the like.
4 is attached to the inner surface. The inner diameter of the ground plate 24 is
It is equal to or slightly smaller than the outer diameter of the coaxial cable 2. Inside the ground plate 24, a plurality of protrusions 6 are formed. These protrusions 6 are formed integrally with the ground plate 24 by pressing a part of the ground plate 24 inward, or a separate object made of a conductive member is welded or soldered to the inside of the ground plate 24. And the like are integrally fixed so as to have conductivity.

Further, referring to FIGS. 1 and 2, the core wire holding portion 7
The signal connection foot 10 is provided on the lower side, and the ground connection foot 9 is provided on the lower side of the cable holding portion 5.
The signal connecting leg 10 is a conductive rod-shaped member made of metal or the like, and its upper end is connected to the connecting portion 25. The ground connection foot 9 is also a conductive rod-shaped member made of metal or the like, and its upper end is connected to the ground plate 24. In addition,
The signal connection foot 10 or the ground connection foot 9 is connected to the connection portion 25.
Alternatively, it may be formed integrally with the ground plate 24, or a separate member may be integrally fixed by welding, soldering, or the like so as to have electrical conductivity in the same manner as described above.

In the connection structure of the first embodiment configured as described above, the coaxial cable 7 and the core wire 8 exposed at the tip thereof are respectively placed in the cable holding portion 5 and the core wire holding portion 7 in the direction B in FIG. Push in. Also,
Then, the connector 3 is covered with the lid 4. The connector 3 is fixed to the lid 4 by means such as adhesion or screws.

As a result, as shown in FIGS. 1 and 2, in the core wire holding portion 7, the core wire 8 is pressed against the connecting portion 25,
Further, the connecting portion 25 that is in contact with the core wire 8 is the signal connecting foot 1.
It is connected to the electronic circuit package 1 by 0, so that a signal from the outside can be connected to the electronic circuit package via the cable 2 or the core wire 8.

In the cable holder 5, the ground plate 2
The protrusion 6 provided on the cable 4 is press-fitted into the cable 2. Then, the protruding portion passes through the insulating jacket 11 of the cable 2,
It contacts the ground portion 12 inside the cable 2 and is connected to the electronic circuit package 1 via the ground connection leg 9. An insulator 22 is provided between the grounding portion 12 and the core wire 8 so that the insulator 22 does not contact with each other.

The above is an example of connecting a coaxial cable having a single core wire to an electronic circuit package (board). When connecting a cable having a plurality of core wires to an electronic circuit package (board). Can be similarly applied to. In this case, the number of connectors corresponding to the number of core wires may be provided on the electronic circuit package (board), and one core wire may be connected to each connector in the same manner as described above.

(Second Embodiment) FIG. 5 shows a second embodiment of the second invention. In the figure, reference numeral 1 is an electronic circuit package including a substrate and the like, and a cable 13 with fixed feet according to the second embodiment is attached. Further, the core wire 8 exposed from the tip of the cable 13 with fixed feet is connected to the electronic circuit package.

As shown in FIG. 6, the cable 13 is provided with a plurality of fixed legs 14 projecting at predetermined intervals in the cable length direction. With reference to FIGS. 7 and 8, these fixed legs 14 are connected to a ground portion 15 inside an insulating jacket 24 provided inside the cable 13. The fixed foot 14 may be a separate member connected to the ground portion 15 by welding, soldering, or the like as described above so as to be electrically connected to the ground portion 15, or may be integrally formed with the ground portion 15. Further, the core wire 8 is provided inside the ground portion 15 of the cable 13 with the insulator 22 interposed therebetween.

In the connection structure of the second embodiment configured as described above, the core wire 8 is connected to the board hole corresponding to the signal path of the electronic circuit package 1, as shown in FIGS. Further, the fixed foot 14 is inserted into the board hole 21 of the electronic circuit package 1 connected to the ground and fixed. As a result, the board hole 21, the fixed foot 14, and the ground portion 15 are all connected to the ground.

The board hole 21 is formed in the electronic circuit package 1.
Cable 13 with fixed foot, because it is freely installed on top
Can draw a free curve as shown in FIG.

Here, FIGS. 9 and 10 show a conventional cable connection structure. In this conventional structure, the ground portion 18 of the cable 16 is the ground metal fitting 19 provided with the connection portion 20.
And is connected to the earth of the electronic circuit package 15 through the earth metal fitting 19. Cable 1
The core wire 17 of No. 6 is mounted in the board hole corresponding to the signal path of the electronic circuit package 15, so that the signal from the outside is connected to the electronic circuit package through the core wire 17. The ground portion 18 and the core wire 17 are structured so as not to contact with each other by the insulator 23.

[0024]

According to the present invention as set forth in claims 1 to 3, since the cable is connected using the connector having the core wire holding portion and the cable holding portion, the following effects can be obtained.

Since the ground connection can be made without peeling off the outer jacket of the cable, the work becomes easy. Further, the ground connection can be surely made, and there is no influence on vibration.

Since it is not necessary to bend the core wire and attach it to the electronic circuit package, there is no trouble. Further, since the core wire is not exposed on the electronic circuit package, it is not necessary to provide a short circuit or a metal fitting for preventing the short circuit.

According to the present invention as set forth in claims 4 to 5, since the fixed foot connected to the ground portion is inserted into the hole connected to the substrate ground portion and connected, the following effects can be obtained.

The ground connection can be made without peeling off the cable jacket. For this reason, the work is facilitated, the ground connection is surely made, and there is no influence on vibration.

Since the route of the cable can be freely determined, the attachment to the electronic circuit package becomes easy.

[Brief description of drawings]

FIG. 1 is a side view showing a state in which a connector is covered with a lid in a connection structure according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the line AA in FIG.

FIG. 3 is a perspective view showing the outline of the connection structure of the first embodiment.

FIG. 4 is a perspective view showing details of connection between a cable and a connector in the first embodiment.

FIG. 5 is a perspective view showing an outline of a connection structure according to a second embodiment of the present invention.

FIG. 6 is a perspective view of a cable with fixed legs that constitutes a second embodiment.

FIG. 7 is a side view showing a state where a cable with fixed feet is attached to an electronic circuit package.

8 is a cross-sectional view taken along the line DD in FIG.

FIG. 9 is an explanatory diagram of a conventional ground connection structure.

FIG. 10 is a perspective view showing details of the constituent members of FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electronic circuit package 2 Coaxial cable 3 Connector 4 Lid 5 Cable holding part 6 Projection part 7 Core wire holding part 8 Core wire 9 Ground connection foot 10 Signal connection foot 13 Cable 14 Fixing foot 15 Grounding part 24 Grounding plate 25 Connection part

Claims (6)

[Claims] 1. In a cable connection structure in which a grounding portion is provided outside a core wire via an insulator, a connector having a core wire holding portion and a cable holding portion is fixed on a substrate, and the core wire holding portion is a substrate. The cable holding part has a signal connecting leg connected to a signal part, and the cable holding part has a ground connecting leg connected to a substrate grounding part and a protrusion part press-fitted into the cable and connected to the grounding part. Then, the cable connection structure is characterized in that the core wire is fixedly held to the core wire holding portion and the grounding portion is fixedly held to the cable holding portion, respectively. 2. The core wire holding portion has connection portions that come into contact with the core wire and the signal connection foot, respectively, and the cable holding portion has ground plates that come into contact with the protrusions and the ground connection foot, respectively. The cable connection structure according to claim 1, which is characterized in that. 3. The core wire is housed in the core wire holder, and the cable is housed in the cable holder, respectively.
The cable connection structure according to claim 1 or 2, wherein the connector is covered with a lid to fix and hold the cable to the connector. 4. In a cable connection structure in which a ground portion is provided on the outside of a core wire via an insulator, a fixed foot connected to the ground portion is inserted into a hole connected to the ground portion of a substrate, Cable connection structure characterized by being connected. 5. The cable connection structure according to claim 4, wherein the fixed foot is integrally fixed to the ground portion. 6. The method of claim 1, 2, 3, 4 used for grounding a cable in an electronic circuit package of a communication device.
Or the cable connection structure described in 5.