JP2003059596A - L-shaped coaxial plug - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an L-shaped coaxial plug with good shield effect enabled to connect with a coaxial jack and a coaxial cable in good condition. SOLUTION: The L-shaped coaxial plug, composed of a main cylindrical part having a coaxial plug to be connected to a coaxial jack and a supplementary cylindrical part, comprises an L-shaped external conduction body 10 formed by integrally jointing the main cylindrical part and the supplementary cylindrical part, a cylindrical inside spring 12 mounted and fitted to the inside periphery, a jack abutting part 10b, and a pin, contacting with and parting from a central conductor of the coaxial jack, at one end; and comprises a contact pin 11 having a core wire fixing part fixing a core wire of a coaxial cable 20, a pin holder 13 holding the contact pin, and a lid for shield 14, holding the pin holder, shielding and sealing the external conductor, at another end.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coaxial plug for connecting a high-frequency signal line, and in particular, a coaxial plug for connecting to a coaxial jack is provided at one end, and a coaxial cable connecting portion is provided at the other end. , Both of which are provided at right angles to each other.

[0002]

2. Description of the Related Art A coaxial plug, which is inserted into a coaxial jack to connect a coaxial line, is used to connect a coaxial cable to a series unit or a coaxial device.

FIG. 4 shows an example of a conventional straight type coaxial connector. In this connector 100, a center conductor 102 is concentrically arranged at a center position of an outer conductor 101. The position of the central conductor 102 is maintained by the insulator 10
3 and the receiving member 104. A substantially cylindrical inner spring 105 is arranged on the inner periphery of the outer conductor 101 to make a good connection between the outer conductor of the coaxial plug and the outer conductor of the coaxial jack (not shown).

This straight type coaxial connector is suitable when the coaxial cable can be pulled out along the axial direction of the coaxial connector.

[0005]

On the other hand, for example, when it is routed along a wall surface with respect to a series unit provided on the wall surface, the coaxial connector is L-shaped, that is, bent at a right angle. This is more convenient because it does not require a wasteful routing space for the coaxial cable.

However, the conventional L-type coaxial plug is
For example, the penetration of electromagnetic waves into a part of the L-shaped outer conductor,
There is a leak part, it also enters the contact part with the coaxial jack,
There are leaks and the shielding effect is insufficient.

The present invention has been made in view of the above points, and an object of the present invention is to provide an L-type coaxial plug which has a good shield effect and can connect a coaxial jack and a coaxial cable well.

[0008]

To achieve the above object, according to the present invention, a main cylindrical portion having a coaxial plug for connecting to a coaxial jack at one end thereof and a side wall of the main cylindrical portion in a direction substantially perpendicular to the side wall of the main cylindrical portion. In an L-shaped coaxial plug that is connected and has a sub-cylindrical portion to which a coaxial cable is attached, an L-shaped coaxial plug in which the main tubular portion and the sub-cylindrical portion are integrally coupled.
A mold outer conductor, a tubular inner spring fitted to the inner circumference of the coaxial plug, and a main tubular portion, which are shallower than the inner spring in the axial direction of the inner spring. A jack abutting portion provided so as to abut the end portion of the coaxial jack at a position, and contact with the central conductor of the coaxial jack at one end side,
A contact pin having a pin for separating and a core wire fixing portion for connecting a core wire of a coaxial cable inserted from the end portion to the other end, and a pin holder for holding the contact pin at the center position of the jack contact portion. And an L-shaped coaxial plug, which is provided so as to close the other end of the main tubular portion and holds the pin holder and shields and seals the outer conductor. It is provided.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT FIG. 1 shows a longitudinal section of an embodiment of the present invention. In this embodiment, a left side portion of the outer conductor 10 shown in the drawing is a coaxial plug, which is not shown but is inserted into and connected to a coaxial jack on the lower side of the drawing. It is fixedly connected using 30.

The outer conductor 10 is formed by using a main cylindrical portion whose axial direction is the vertical direction in the figure. The main tubular portion constitutes the outer conductor of the coaxial plug, and the open end 10a thereof is formed in a substantially cylindrical shape and its tip is slightly narrowed. A jack abutting portion 10b is formed in the center of the main cylindrical portion and inside the cylindrical portion.

The end face of the outer conductor of the coaxial jack (not shown) abuts on the end face of the jack abutting portion 10b, and the coaxial plug and the coaxial jack are grounded. A pin holder 13 made of an insulating material is supported inside the jack contact portion 10b in the radial direction. The pin holder 13 is the outer conductor 1
The contact pin 11 is retained at the center position by being locked by a retaining member 10c formed on the inner periphery of 0.

On the inner circumference of the cylindrical portion of the outer conductor 10 near the open end, there is provided an inner spring 12 which is cylindrical and has axial cuts or lines. Makes good contact with the outer conductor of the coaxial jack. The inner spring 12 is prevented from coming off by the recessed opening end 10a of the outer conductor 10.

The contact pin 11 is in the form of a pin whose lower portion in the drawing contacts the central conductor of the coaxial jack.
The central portion is a portion held by the pin holder 13, and the upper end in the drawing is a core wire fixing portion for caulking and connecting the core wire of the coaxial cable. A space for introducing the core wire of the coaxial cable is formed in the upper right portion of the pin holder 13 in the drawing, and the core wire of the coaxial cable is connected to the contact pin 11 in this space.

A lid 14 is press-fitted into an opening provided in the upper end surface of the outer conductor 10 in the drawing to form a shield structure of the outer conductor 10, and also supports the upper end surface of the pin holder 13 in the drawing.

The right side portion of this embodiment in the drawing is a connecting portion 10d of the coaxial cable 20. Coaxial cable 20
Has a core wire 21, an insulator 22, a braid 23, and a coating 24. The cable connecting portion 1 integrally extending from the outer conductor 10 between the insulator 22 and the braid 23.
0d enters and is tightened and fixed by the caulking member 30 from the outer periphery of the coating 24.

From the outside of the caulking member 30 to the outer conductor 1
The outer conductor 10 and the coaxial cable 20 may be continuously formed by performing a molding process including the outer periphery of 0. As a result, the waterproofness of the connecting portion between the coaxial plug and the coaxial cable is enhanced.

In one embodiment of the present invention thus constructed, the outer conductor of the coaxial jack is brought into contact with the inner peripheral surface of the inner spring 12 by inserting it into the coaxial jack, and the contact pin 11 is the central conductor of the coaxial jack. To contact. By this, the connection between the coaxial plug and the coaxial jack is made,
As a result, the coaxial cable connected to the coaxial plug is connected to the device provided with the coaxial jack.

2A and 2B show the structure of the outer conductor 10 and the cable connecting portion 10d in FIG. As shown in FIG. 2A, the outer conductor 10 forms a main tubular portion, and a cable connecting portion 10d, which is a sub-cylindrical portion, is provided on a side wall near the upper end in the figure. And FIG.
As shown in (b), at the end of the cable connecting portion 10d,
A flange 10e, which is partially cut away, is provided.

The flange 10e firmly fixes the cable 20 and the cable connecting portion 10d when the cable 20 is inserted as shown in FIG. That is, when the braid 23 of the cable rides on the outer periphery of the cable connecting portion 10d, the caulking member 30 clamps the braid 23 to the outer periphery of the cable connecting portion 10d through the covering 24, thereby the end portion of the cable connecting portion 10d. The peripheral edge of the flange 10e provided on the inner side of the braid 23 bites into the inner peripheral side. Moreover, there is a notch in the flange 10e, and this notch bites into the inner peripheral side of the braid 23 for more firm fixing, and the cable can be prevented from rotating in the circumferential direction.

In this sense, it is preferable that the number of cuts is large, but it is necessary to consider the balance between the anti-rotation effect and the sliding condition in consideration of the fact that the slippage becomes worse when the cable 20 is inserted if there are many cuts. Is.

FIGS. 3A and 3B are a side view and a front view of the contact pin 11 in the embodiment of FIG. Figure 3
In (a) and (b), there is a contact portion 11a in the lower part of the drawing that comes into contact with the central conductor of the coaxial jack, and a protrusion 11b that engages with the pin holder 13 and acts as a retaining member at the center.
There is a gripping portion 11c at the upper part of the drawing for crimping the core wire of the coaxial cable.

In the contact pin 11, for example, the contact portion 11a may be formed to have a circular cross section, and the central portion including the protrusion 11b and the grip portion 11c may have a rectangular cross section. Further, the cross-sectional shape may be rectangular as a whole.

[0023]

As described above, according to the present invention, the main tubular portion provided with the coaxial plug and the sub tubular portion provided with the cable connecting portion are integrally formed, and the coaxial plug to the coaxial cable are formed. Since the gap where electromagnetic waves invade and leaks is eliminated, and the contact surface with the coaxial jack is firmly contacted and the outer conductors are intricately interdigitated with each other, the coaxial cable is passed from the coaxial jack through the coaxial plug. It is possible to satisfactorily prevent the electromagnetic wave from entering and leaking from the path leading to.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a configuration of an embodiment of the present invention.

2 (a) is a perspective view showing a relationship between an outer conductor and a cable connecting portion in the embodiment of FIG. 1, and FIG. 2 (b) is a perspective view showing a flange of the cable connecting portion.

3A and 3B are a side view and a front view of a contact pin in the embodiment of FIG.

FIG. 4 is a vertical sectional view of a conventional straight type coaxial plug.

[Explanation of symbols]

10 Outer conductor 10a open end 10b Jack contact part 10c retaining 10d cable connection 10e flange 11 center conductor 12 Inner spring 13 pin holder 14 Lid 20 coaxial cable 21 core wire 22 Insulator 23 braid 24 coating 30 caulking member

Claims (3)

[Claims] 1. A main cylindrical portion having a coaxial plug for connecting to a coaxial jack at one end, and a sub-cylindrical portion connected to a side wall of the main cylindrical portion at a substantially right angle and having a coaxial cable attached to the end portion. In an L-shaped coaxial plug having a portion, an L-shaped outer conductor formed by integrally connecting the main cylindrical portion and the sub-cylindrical portion, and a cylindrical inner portion fitted to an inner circumference of the coaxial plug. A spring and a jack abutting portion connected to the main tubular portion and provided on the inner periphery of the inner spring so as to abut on the end portion of the coaxial jack at a position shallower than the axial depth of the inner spring. A contact pin having a pin for contacting with and separating from a center conductor of the coaxial jack at one end side, and a core wire fixing part for connecting a core wire of a coaxial cable inserted from the end part at the other end; At the center position of the contact part A pin holder for holding the contact pin, and a shield lid provided so as to close the other end of the main tubular portion and holding the pin holder and sealing the outer conductor with a shield. Type coaxial plug. 2. The L-shaped coaxial plug according to claim 1, wherein a flange having a notch for preventing the coaxial cable from rotating in a circumferential direction is provided at an end of the sub-cylindrical portion to which the coaxial cable is attached. L-type coaxial plug provided with. 3. The L-type coaxial plug according to claim 1, wherein the periphery of the connecting portion between the sub-cylindrical portion and the coaxial cable is molded.