JPH05217638A - Coaxial connector mounting structure - Google Patents

Abstract

PURPOSE:To improve the matching of the characteristic impedance by wrapping a coupling member on the connection side end parts of a housing and an exterior covering material, tightening the coupling member, and thereby generating certain coupling without causing deformation of the connection side end part. CONSTITUTION:A coupling member 3 made from a metal sheet having resilience such as stainless steel sheet is wrapped on the connection end 24a of an exterior covering material 24 constituting a coaxial cable 20 and the connection side end part 11a of a housing 11, and the connection ends 24a, 11a are coupled together rigidly by tightening the coupling member 3. That is, this coupling together generates application of uniform fastening force to the ends 24a, 11a from all directions on circumference to ensure that the two are coupled together in good performance. The ends 3a positioned on the sides of the coupling member 3 are hitched by each other and bonded upon tightening of the two end parts 24a, 11a, and the coupled condition of the two end parts 24a, 11a can be maintained favorably.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for a coaxial connector which is electrically connected to a coaxial cable.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 4, a coaxial cable 20 has a terminal portion for connecting the terminal portion to a mating connector (not shown) such as a receptacle provided in a device circuit. The coaxial connector 10 is attached in advance. And, this coaxial connector 10
The outer conductor 21 and the center conductor 2 that form the coaxial cable 20.
Each of the two includes a housing 11 and a center socket 12 that are electrically connected, and an insulating bushing 13 interposed between them.

That is, here, the outer conductor 21 of the coaxial cable 20 is connected to the connection side end 11a of the housing 11, and these connections oppose the connection side end 11a of the housing 11 along its diameter direction. It is done by crimping from both sides. The center conductor 22 is connected to the connection side end 12a of the center socket 12, and these connections are connected by caulking the connection side end 12a of the center socket 12 in the same manner. In addition, reference numeral 23 in the drawing denotes an insulator interposed between the outer conductor 21 and the center conductor 22 of the coaxial cable 20,
In addition, reference numeral 24 denotes an outer covering material that covers the outer surface of the outer conductor 21 and is called a sheath.

[0004]

By the way, in the above-described conventional coaxial connector 10, the connection side end 11a of the housing 11 is caulked to be electrically connected to the outer conductor 21 of the coaxial cable 20. However, in such a case, as shown in FIGS. 5 and 6, both side portions of the connection side end portion 11a and the outer conductor 21 that face each other along the diametrical direction are crushed and deformed. When such a deformation occurs, the characteristic impedance of the coaxial line is mismatched, and the reflection caused by the mismatch becomes large, resulting in the disadvantage of deterioration of the return loss characteristic.

Further, the connection side end portion 11a of the housing 11 is
In some cases, the tip of the connection-side end portion 11a may be the same as the coaxial cable 20.
There is also a case where it penetrates through the insulator 23 and comes into contact with the central conductor 22, resulting in a serious inconvenience such as a short circuit between the two.

The present invention was devised in view of such inconveniences, and an attachment of a coaxial connector capable of surely connecting the outer conductor and the housing of the coaxial cable without deforming them. It is intended to provide a structure.

[0007]

In order to achieve such an object, a coaxial connector mounting structure according to the present invention comprises:
A connection member is wound around the outer peripheral surface of the connection-side end of the outer sheathing material that constitutes the coaxial cable and the connection-side end of the housing that is conductively connected to the outer conductor of the coaxial cable, and the both connections are made by this connection member. The feature is that the side ends are fastened together. At this time, it is preferable to form protrusions that bite into the outer peripheral surfaces of the connection-side end portions on the winding-side inner surface of the connecting member that faces the outer peripheral surface of the connection-side end portions of the housing and the housing. .

[0008]

According to the above construction, by tightening the connecting member, the connection side end portions of the exterior covering material and the housing, that is, the coaxial cable and the coaxial connector are integrally connected. At this time, however, the connecting member is used. A uniform tightening force is applied to each of the tightened connection-side end portions from the respective circumferential directions. Therefore, only the tightening force from a certain predetermined direction is not applied to these connection side end portions, and it is impossible for the connection side end portions to be deformed.

[0009]

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

FIG. 1 is a vertical sectional view showing a schematic structure of a coaxial connector according to this embodiment, and FIG. 2 is an external perspective view showing a shape of a connecting member when it is tightened. Reference numeral 1 in these drawings
Is a coaxial connector, and 3 is a connecting member. In FIG. 1, parts and portions which are the same as or equivalent to those of the conventional example shown in FIG. 4 are designated by the same reference numerals, and detailed description thereof is omitted here.

The coaxial connector 1 according to the present embodiment, like the conventional example, has a brass housing 11 and a center socket 12 to which an outer conductor 21 and a center conductor 22 of a coaxial cable 20 are electrically connected, respectively, and a space between them. And an insulating bushing 13 made of a resin interposed between the outer conductor 21 and the outer conductor 21 of the coaxial cable 20 by sandwiching the connection side end 11a of the housing 11 from opposite side portions in the diametrical direction. The center conductors 22 are connected to each other by caulking the connection side end 12a of the center socket 12. At the tip of the connection side end portion 11a of the housing 11, there is formed a hook claw portion 2 that bites into the exposed outer conductor 21 of the coaxial cable 20 by being pinched, and the hook claw portion 2 bites into the outer conductor 21. Thus, the coaxial connector 1 is prevented from coming off from the coaxial cable 20.

Further, in the above structure, the connection side end portion 24a of the exterior covering material 24 which constitutes the coaxial cable 20.
Around the outer peripheral surface of the housing 11 and the connection side end 11a, a connecting member 3 made of a thin metal plate such as stainless steel having a spring property is wound.
The connection-side end portions 24a and 11a are integrally connected by tightening with. That is, when the connection-side end portions 24a and 11a are integrally tightened by using the connecting member 3, a uniform tightening force acts on the connection-side end portions 24a and 11a from all circumferential directions. The connection-side end portions 24a and 11a are connected to each other. Then, the end portions 3a located on both sides of the connecting member 3 are connected to each other at the connection side end portion 24 as shown in FIG.
a and 11a are tightened and then hooked to each other to be joined, and by such joining, the connection side end portions 24a and 11a are maintained in a better connected state. Has become. In addition,
The coupling method of the end portions 3a of the connecting member 3 is not limited to the hooking, and it goes without saying that another method such as screwing the both may be used.

Further, at this time, as in the modified example shown in FIG. 3, the inner surface of the connecting member 3 on the winding side, that is, the outer peripheral surface of the connection side end portions 24a, 11a of the exterior covering material 24 and the housing 11, respectively, is faced. The protrusion 4 that bites into the outer peripheral surfaces of the connection-side end portions 20a and 11a may be formed on the inner surface of the connecting member 3 on the winding side. That is, if the projections 4 as described above are formed, the connection member 3 that has been tightened will further strengthen the connection between the connection-side end portions 24a and 11a of the exterior covering material 24 and the housing 11.

[0014]

As described above, according to the mounting structure of the coaxial connector according to the present invention, the outer sheathing material and the housing-side end portions of the housing constituting the coaxial cable and the coaxial connector which are connected to each other are connected. Means that a uniform tightening force is applied from each circumferential direction, and only a tightening force from a certain predetermined direction is not applied.

As a result, the end portions on the connection side cannot be deformed, and the outer conductor of the coaxial cable and the housing can be reliably connected while enhancing the matching of the characteristic impedance of the coaxial line. can get.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a schematic configuration of a coaxial connector according to an embodiment.

FIG. 2 is an external perspective view showing a shape of the connecting member when tightened.

FIG. 3 is an external perspective view showing a modified example of the connecting member.

FIG. 4 is a vertical sectional view showing a schematic configuration of a coaxial connector according to a conventional example.

5 is a cross-sectional view taken along the line AA of FIG.

6 is a cross-sectional view taken along the line BB of FIG.

[Explanation of symbols]

 1 Coaxial Connector 3 Coupling Member 11 Housing 11a Connection Side End 20 Coaxial Cable 21 Outer Conductor 24 Exterior Covering Material 24a Connection Side End

Claims (2)

[Claims] 1. A housing (11) electrically connected to a connection-side end portion (24a) of an exterior covering material (24) constituting a coaxial cable (20) and an outer conductor (21) of the coaxial cable (20). The connection member (3) is wound around the outer peripheral surface of the connection side end portion (11a) of the above, and both connection side end portions (24a, 11a) are integrally tightened by this connection member (3). The coaxial connector mounting structure. 2. An exterior covering material (24) and a housing (1)
In the winding-side inner surface of the connecting member (3) facing the outer peripheral surface of the connection-side end portion (24a, 11a) of 1), a projection (4) that bites into the outer peripheral surface of the connection-side end portion (24a, 11a). The mounting structure for a coaxial connector according to claim 1, wherein