JPH0119826Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a cable that is used when branching and connecting other coaxial cables or wiring board circuits for testing in a direction perpendicular to the longitudinal direction of the coaxial cable at an intermediate position of the coaxial cable. This relates to a T-branch connection structure.

In the conventional connection structure, as shown in FIG.
Place it in Next, cover 1 of the T-branch connector
2 to the base 11 of the T-branch connector using mounting screws 41 and 42. As a result, the coaxial cable 2 to be connected is sandwiched and held between the cover 12 and base 11 of the T-branch connector, as shown in FIG. Furthermore, as a result, the plurality of blade-shaped external conductor connectors 51 and 52 bite into the coaxial cable 2 to be connected, and as shown in FIG. 4 showing the BB cross section of FIG. It contacts the outer conductor 21 of the connecting coaxial cable 2. These external conductor connectors 51 and 52
An external conductor extraction fitting 61 connected to the T-branch connector 1 protrudes from the side plate of the T-branch connector 1. Next, the internal conductor connecting tool 3
1 and 32 through the threaded portion, the second
As shown in FIG. 3, which shows the AA cross section of the figure, the tip of the fine conductor 33 provided inside the internal conductor connector 31 comes into contact with the internal conductor 22 of the coaxial cable 2 to be connected. In order to provide insulation from the external conductor 21, the circumference of the fine conductor 33 is covered with an insulating material. The internal conductor connector 32 has a shaft rod 3 made of an insulating material.
It has a fine conductor 34 implanted only at the tip of the connector 6, and the fine conductor 34 pushes the inner conductor 22 from the opposite side of the connector 31 by means of a spring 35 provided inside. This maintains stable contact between the internal conductor connectors 31 and 32 and the internal conductor 22.
This internal conductor connector 31 protrudes from the side plate of the T-branch connector 1 as an internal conductor extraction fitting in the same way as the external conductor extraction fitting 61.

In such a conventional structure, the external conductor extraction fitting 61 is connected to the external conductor 21 of the coaxial cable 2 to be connected.
and the internal conductor extraction fitting 3.
1 is in contact with the inner conductor 22 of the coaxial cable 2 to be connected, as shown in FIG. It is conceivable to insert a resistance meter between the cable and the fine conductor 33 to test continuity, but such a test cannot be performed when the end of the coaxial cable to be connected is not nearby.

The object of the invention is to provide a connection structure that eliminates the above-mentioned drawbacks.

The structure of the present invention is a T-branch connection structure for a coaxial cable having an inner conductor and an outer conductor, including a fixing means for clamping and fixing the coaxial cable, and a part of the coaxial cable that is in electrical contact with the inner conductor and protrudes from the fixing means. a plurality of first contact means attached to the fixing means so as to be in contact with the inner conductor and a plurality of second contacts attached to the fixing means so as to be in electrical contact with the inner conductor and partially protrude from the fixing means; and a contact state between the first contact means and the internal conductor and the second contact means by inspecting the conduction state between the first contact means and the second contact means, respectively. The state of contact with the external conductor can be inspected.

Next, the present invention will be explained in detail with reference to the drawings.

FIG. 5 is an exploded perspective view showing one embodiment of the present invention, and FIGS. 6, 7, and 8 are perspective views of this embodiment, and A-A and A'--
7A' sectional view and BB and B'-B' sectional views of FIG. 6; FIG.

As shown in FIG. 5, first, the part of the coaxial cable 2 to be connected where the T-branch connection is to be made is placed in the mounting groove 13 formed in the base 11 of the T-branch connector.
Next, the cover 12 of the T-branch connector is attached to the base 11 of the T-branch connector via the mounting screws 41 and 42. As a result, the coaxial cable 2 to be connected is held between the cover 12 and the base 11 of the T-branch connector, as shown in FIG. 6. At this time, the plurality of blade-shaped external conductor connectors 51, 52, 51' and 52' bite into the connected coaxial cable 2, and as shown in FIG. Contact with 21. This external conductor connector 51
and external conductor extraction fitting 61 connected to 52
and an external conductor extraction fitting 61' connected to the external conductor connectors 51' and 52' protrude from the side plate of the T-branch connector 1. Next, the internal conductor connectors 31 and 3 are
2, 31' and 32' are screwed in through the threaded portions, as shown in FIG.
The tips of the thin conductors 33 and 33' provided inside the cables 31 and 31' come into contact with the inner conductor 22 of the coaxial cable 2 to be connected. In order to provide insulation from the external conductor 21, the circumferences of the fine conductors 33 and 33' are covered with an insulating material. Connectors 32 and 3 for internal conductors
2' has fine conductors 34 and 34' implanted only at the tips of shaft rods 36 and 36' made of insulating material, and connectors 31 and 31' are connected by springs 35 and 35' provided inside. The inner conductor 22 is pushed by the fine conductors 34 and 34' from the opposite side.
As a result, the inner conductor connectors 31, 32, 31'
32' and the internal conductor 22 were able to maintain stable contact. These internal conductor connectors 31 and 31' are used as internal conductor extraction metal fittings from the side plate of the T-branch connector 1 as external conductor extraction metal fittings. 61
and 61' protrude similarly.

In this embodiment, the fine conductors 33 and 3
3' and the inner conductor 22, and the outer conductor connectors 51, 52, 51' and 52' and the outer conductor 21.
To check the contact with the external conductor, as shown in FIG. This can be easily done by doing this.

FIG. 9 shows the external conductor extraction fittings 61 and 61' of the T-branch connector 1 and the internal conductor extraction fitting 3.
1 and 31' are connected to two sets of external conductor connectors 71 and 71' and internal conductor connectors 81 and 81' provided on the side plate of the electronic circuit case 9, respectively, and T The branch connector 1 and the electronic circuit case 9 are fixed with mounting screws 43 and 44.

As described above, the present invention has the effect that it is possible to easily check the electrical connection state between the outer conductor extraction fitting and the inner conductor extraction fitting and the outer conductor and inner conductor of the coaxial cable.

[Brief explanation of the drawing]

Figures 1 and 2 are perspective views showing a conventional T-branch connection structure, Figure 3 is a sectional view taken along line AA in Figure 2, Figure 4 is a sectional view taken along line BB in Figure 2, and Figure 5. and the sixth
The figure is a perspective view showing one embodiment of the present invention, FIG. 7 is a sectional view taken along lines AA and A'-A' in FIG. 6, and FIG. 8 is a sectional view taken along lines BB and B'-B' in FIG. 6. Cross-sectional view, and 9th
The figure is a perspective view showing an example of application of this embodiment. In the figure, 1... T branch connector, 2...
Connected coaxial cable, 9...Electronic circuit housing, 11
... Base, 12 ... Cover, 13 ... Mounting groove,
21...Outer conductor, 22...Inner conductor, 31,3
1'... Connecting tool for internal conductor, 32, 32'... Connecting tool for internal conductor, 33, 33'... Meticulous conductor, 34,
34'...Meticulous conductor, 35, 35'...Spring, 4
1, 42, 43, 44...Mounting screws, 51, 5
1', 52, 52'... Connector for external conductor, 61,
61'... External conductor extraction fitting, 71, 71'...
Connector for outer conductor, 81, 81'... Connector for inner conductor.

Claims (1)

[Scope of utility model registration request] In a T-branch connection structure for a coaxial cable having an inner conductor and an outer conductor, a fixing means for clamping and fixing the coaxial cable, and a fixing means for electrically contacting the inner conductor and protruding partially from the fixing means. a plurality of attached first contact means; a plurality of second contact means attached to the fixing means so as to be in electrical contact with the outer conductor and partially protrude from the fixing means; By inspecting the electrical continuity between the first contact means and the second contact means, the contact state between the first contact means and the internal conductor and the second
A T-branch connection structure for a coaxial cable, characterized in that the contact state between the contact means and the external conductor can be inspected.