JPS6335492Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention has the following advantages:
This invention relates to a contact for contacting an external conductor of a T-branch coaxial connector, which is used to electrically couple and connect other coaxial cables, circuits of wiring boards, etc. in a direction substantially perpendicular to the longitudinal direction of the coaxial cable.

Connecting another coaxial cable or a circuit on a wiring board perpendicular to the longitudinal direction of the coaxial cable to be connected at an intermediate position of the coaxial cable to be connected is used to add cable lines or connect a test circuit to the cable. required in the case of In order to meet these demands, conventionally a probe on which a pointed part of a conductive material is formed is inserted into the coaxial cable to be connected at right angles to its longitudinal direction, and this insertion covers the pointed part of the probe. A T-branch coaxial connector has been proposed that is brought into contact with the outer conductor of a connecting coaxial cable.

In this type of T-branch coaxial connector, the inserted tip is in contact with the outer conductor of the coaxial cable to be connected, and the coaxial cable to be connected is connected to other coaxial cables or circuits on the wiring board through the probe. A combination is made.

In other words, with the coaxial cable to be connected fixedly held on the mounting base, by screwing the probe with a thread formed on the outer circumferential surface into the screw hole formed in the mounting base, the screw hole formed at the end of the probe is inserted. The pointed portion is configured to break through the outer sheath of the coaxial cable to be connected and come into contact with the outer conductor.

Figures 1 and 2 show the configuration of an example of a conventionally proposed contact for contacting an external conductor.
The coaxial cable 15 to be connected is disposed within the mounting groove 31 of the mounting base 30 . A lid 51 is provided, and the lid 51 is disposed on the mounting base 30 in which the coaxial cable 15 to be connected is disposed in the mounting groove 31 so as to cover the coaxial cable 15 to be connected.
An insertion groove 52 into which approximately the upper half of the coaxial cable 15 to be connected is inserted is formed in the lid body 51, and a step in which the width of the insertion groove 52 is enlarged is formed on both side edges of the upper end plate of the insertion groove 52. Portions 53-1 and 53-2 are formed.

A flexible conductive connection base 54 is disposed within the insertion groove 52 so that both side edges thereof are in contact with the stepped portions 53-1 and 53-2. This connection base 54
On one end side, a pointed part 55-1 made of a conductive material,
55-2 is formed. Pointed portion 55-1, 5
The end portion of 5-2 is formed into a blade shape, and with the lid 51 disposed to cover the coaxial cable 15 to be connected, the lid 51 is pressed in the direction of the coaxial cable 15 to be connected. When the lid body 51 is pressed against the connected coaxial cable 15 side, the pointed portions 55-1, 55-
The blade-like end portion of No. 2 breaks through the outer sheathing 25 of the coaxial cable 15 to be connected and pierces the outer conductor 26 . When the external pressure welding means (not shown) is operated from this state, the lid body 51 is further moved to the mounting base 3.
It is pushed in the 0 direction.

Due to this pressing operation by the external pressure welding means, the connection base 54 is elastically deformed into a concave shape toward the connected coaxial cable 15 side by the stepped portions 53-1 and 53-2.
The pointed portions 55-1 and 55-2 approach each other and contact the outer conductor 26 so as to sandwich a portion of the outer conductor 26 therebetween.

However, in this conventionally proposed external conductor contact, the connection base 54 and the pointed portion 55-1,
Since 55-2 is deformed by the electrical coupling action of the contacts, it cannot be used repeatedly. Furthermore, due to the deformed state when they are coupled, the pointed portions 55-1 and 55-2 are in complete contact with the outer conductor 26 at their mutually opposing inner portions, but there is a problem in that the contact is not sufficient at their outer portions. .

This invention solves the problems with the external conductor contacts that have been proposed in the past, allows reliable contact with the external conductor of the coaxial cable to be connected with a simple operation, prevents incomplete contact accidents, and eliminates repeated contact. The present invention provides a T-branch coaxial connector that can be used for contacting an external conductor.

According to this invention, a contact body formed of a metal material is movable in a direction perpendicular to the longitudinal direction of the coaxial cable to be connected held on a mounting base, and is rotatable around this movement axis. will be placed. The tip of the contact body is formed into a substantially cylindrical shape, and a concave-convex engaging portion is formed around the end of this cylindrical portion.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The T-branch coaxial connector external conductor contact of this invention will be described in detail below based on its embodiments and with reference to the drawings.

FIG. 3 shows the shape of the tip of the contact body 55 of this invention. The tip of the contact body 55 made of a conductive material is formed into a cylindrical shape, and the periphery of the end of this cylindrical portion is uneven. Engagement part 5
6 is formed. Therefore, by the screwing means,
When the contact body 55 is coupled to the coaxial cable to be connected while rotating, the concave and convex engaging portion 56 at the end of the contact body 55 breaks through the outer sheath 25 of the coaxial cable to be connected 15, and the concave and convex engaging portion 56 is exposed to the outside. The conductor 26 is threadedly engaged and complete electrical contact is made between the outer conductor 26 and the contact body 55.

An example using a T-branch coaxial connector using the external conductor contact of this invention will be explained in the case where the circuit of the wiring board 21 is electrically coupled to the coaxial cable 15 to be connected at right angles to the longitudinal direction of the connected coaxial cable 15. do.

Mounting terminal t of the circuit of the wiring board 21 shown in FIG.
An insulator 35 having an opening 36 formed therein is attached to -2, and in this state, the bottom plates 37 are arranged facing each other with respect to the wiring board 21, and are fixed together by screws. An opening 38 is formed in the bottom plate 37 at the position of the insulator 35, and external conductor connection cylindrical bodies 40-1 and 40-2 are fixedly attached to the bottom plate 37 so as to sandwich this opening 38. . The wiring board 21 has openings 41-1, 4
1-2 are formed, and when the bottom plate 37 is fixed to the wiring board 21, the external conductor connection cylindrical bodies 40-1, 40-2 are connected to the openings 41-1, 4.
It is arranged at the 1-2 position.

A coaxial cable 15 to be connected is arranged in a mounting groove 31 formed in the mounting base 30, and the coaxial cable 15 has an internal conductor attached to the insulating base 32 so as to be in contact with the internal conductor 16 of the coaxial cable 15. The end side of the conductor contact body 11 is pushed in. The extraction terminal 11 - t connected to the contact body 11 is arranged to protrude from the end side of the insulating base 32 .

The wiring board 2 is fixed to the bottom plate 37 on the mounting base 30 so as to cover the coaxial cable 15 to be connected.
1 is placed. In this mounted state, the wiring base 32
protrudes from the opening 38, and the mounting terminal 1 at its end
1-t is inserted into the opening 36 of the insulator 35 of the wiring board 21, and the extraction terminals 11-t and t-2 are fitted and connected to each other.

On the other hand, the cylindrical bodies 40-1, 40-2 for connecting external conductors having threads formed on the inner peripheral surface are connected to the openings 41-1, 4.
The outer conductor contact bodies 55 of this invention having the above-described structure are screwed through the openings 41-1 and 41-2, respectively. The concave and convex engaging portion 56 formed around the end of the contact body by screwing the contact body engages the outer sheath 25 of the coaxial cable 15 to be connected.
The contact body 55 is electrically connected to the outer conductor 26 by the engaging contact of the uneven engaging portion.

Connected coaxial cable 15 of contact body 55
Screwing into the cylindrical bodies 40-1, 40-2
The coaxial cable 15 is accurately positioned and guided by the screws on the inner circumferential surface of the coaxial cable 15, and the coaxial cable 15 to be connected is smoothly positioned at a predetermined position. In this way, the contact body 5
With this invention, the concave-convex engaging portion 56 of No. 5 is accurately positioned perpendicular to the longitudinal direction of the coaxial cable 15 to be connected, and electrical contact between the contact body 55 and the external conductor 26 is established in a stable mutual position. Then it will be realized.

Since no deformation occurs to the contact body 55 during the contact, the contact body 55 of this invention can be used repeatedly for the coaxial cable to be connected.
In addition, the contact body 55 is connected to the coaxial cable 1 to be connected.
5, the contact body 55 is in contact with the contact body 55 with the plurality of concavities and convexities of the concave-convex engaging portion 56 embedded in the outer conductor 26 of the coaxial cable 15 to be connected. The coaxial cable 15 to be connected is electrically and completely connected to each other.

In addition, the outer conductor 2 removed during the contact bonding operation
The outer covering piece 6 is a cylindrical body 40- for contacting the outer conductor.
1 and 40-2, it does not adversely affect the electrical contact between the contact body 55 and the coaxial cable 15 to be connected.

Although not provided in the embodiment, means may be provided to prevent the contact state between the contact body 55 and the connected coaxial cable 15 from changing due to deformation of the cable 15 over time. For example, as shown in FIG. 8, a spring 70 is disposed between the coaxial cable 15 to be connected and the inner wall surface of the mounting base 30 at a position in the mounting groove 31 facing the contact body 55, and the biasing force of the spring 70 causes It is possible to bias the connected coaxial cable 15 toward the contact body 55 and maintain its complete coupling state.

As explained in detail above, according to this invention, when the coaxial cable to be connected is correctly positioned perpendicular to its longitudinal direction by a simple connection operation, it is in perfect electrical contact with the external conductor. It becomes possible to provide a contact for contacting the external conductor of a T-branch coaxial connector that can hold the

[Brief explanation of drawings]

1 and 2 are diagrams showing the configuration of a conventionally proposed contact for contacting an external conductor, and FIG. 3 is a diagram showing the shape of the contact body of an embodiment of the contact for contacting an external conductor of a T-branch coaxial connector of this invention. Figures 4 and 5 are views showing the state of connection with the coaxial cable to be connected by the embodiment of the T-branch coaxial connector external conductor contact of this invention, and Figure 6.
7 and 7 are diagrams showing the configuration of main parts of other embodiments of the T-branch coaxial connector external conductor contact of this invention, and FIG. 8 is an implementation of the T-branch coaxial connector external conductor contact of this invention. FIG. 6 is a diagram illustrating an example of a configuration in which a biasing means is provided to completely achieve a bonded state. 15... Coaxial cable to be connected, 21... Wiring board, 25... Outer covering, 30... Mounting stand, 26...
...Outer conductor, 35...Insulator, 37...Bottom plate, 4
0-1, 40-2... Cylindrical body for external conductor connection, 5
5...Contact body, 56...Concave and convex engaging portion.

Claims (1)

[Scope of utility model registration request] A contact formed of a metal material that is movable in a direction perpendicular to the longitudinal direction of the coaxial cable to be connected, which is held on a mounting base, and rotatable around the axis of movement. A contact for contacting an external conductor of a T-branch coaxial connector, wherein a main body is disposed, the tip of the contact main body is formed into a substantially cylindrical shape, and a concave-convex engaging portion is formed on the peripheral edge of the cylindrical portion.